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authorAldrik Ramaekers <aldrik@mailbox.org>2026-01-09 15:28:38 +0100
committerAldrik Ramaekers <aldrik@mailbox.org>2026-01-09 15:28:38 +0100
commit210404a73706993d197c1290d5a411394e176fbe (patch)
tree93c3ea9fc4691ca42f26dd92c6e14627af0b47af /libs/cpp-httplib/benchmark/crow/crow_all.h
parenta65e876f3277a7d7fca6e5129ac3e200dae2d0dc (diff)
remove unused lib files
Diffstat (limited to 'libs/cpp-httplib/benchmark/crow/crow_all.h')
-rw-r--r--libs/cpp-httplib/benchmark/crow/crow_all.h14316
1 files changed, 0 insertions, 14316 deletions
diff --git a/libs/cpp-httplib/benchmark/crow/crow_all.h b/libs/cpp-httplib/benchmark/crow/crow_all.h
deleted file mode 100644
index 0465f96..0000000
--- a/libs/cpp-httplib/benchmark/crow/crow_all.h
+++ /dev/null
@@ -1,14316 +0,0 @@
-// SPDX-License-Identifier: BSD-3-Clause AND ISC AND MIT
-/*BSD 3-Clause License
-
-Copyright (c) 2014-2017, ipkn
- 2020-2022, CrowCpp
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-* Redistributions of source code must retain the above copyright notice, this
- list of conditions and the following disclaimer.
-
-* Redistributions in binary form must reproduce the above copyright notice,
- this list of conditions and the following disclaimer in the documentation
- and/or other materials provided with the distribution.
-
-* Neither the name of the author nor the names of its
- contributors may be used to endorse or promote products derived from
- this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-The Crow logo and other graphic material (excluding third party logos) used are under exclusive Copyright (c) 2021-2022, Farook Al-Sammarraie (The-EDev), All rights reserved.
-*/
-#pragma once
-// This file is generated from nginx/conf/mime.types using nginx_mime2cpp.py on 2021-12-03.
-#include <unordered_map>
-#include <string>
-
-namespace crow
-{
- const std::unordered_map<std::string, std::string> mime_types{
- {"shtml", "text/html"},
- {"htm", "text/html"},
- {"html", "text/html"},
- {"css", "text/css"},
- {"xml", "text/xml"},
- {"gif", "image/gif"},
- {"jpg", "image/jpeg"},
- {"jpeg", "image/jpeg"},
- {"js", "application/javascript"},
- {"atom", "application/atom+xml"},
- {"rss", "application/rss+xml"},
- {"mml", "text/mathml"},
- {"txt", "text/plain"},
- {"jad", "text/vnd.sun.j2me.app-descriptor"},
- {"wml", "text/vnd.wap.wml"},
- {"htc", "text/x-component"},
- {"avif", "image/avif"},
- {"png", "image/png"},
- {"svgz", "image/svg+xml"},
- {"svg", "image/svg+xml"},
- {"tiff", "image/tiff"},
- {"tif", "image/tiff"},
- {"wbmp", "image/vnd.wap.wbmp"},
- {"webp", "image/webp"},
- {"ico", "image/x-icon"},
- {"jng", "image/x-jng"},
- {"bmp", "image/x-ms-bmp"},
- {"woff", "font/woff"},
- {"woff2", "font/woff2"},
- {"ear", "application/java-archive"},
- {"war", "application/java-archive"},
- {"jar", "application/java-archive"},
- {"json", "application/json"},
- {"hqx", "application/mac-binhex40"},
- {"doc", "application/msword"},
- {"pdf", "application/pdf"},
- {"ai", "application/postscript"},
- {"eps", "application/postscript"},
- {"ps", "application/postscript"},
- {"rtf", "application/rtf"},
- {"m3u8", "application/vnd.apple.mpegurl"},
- {"kml", "application/vnd.google-earth.kml+xml"},
- {"kmz", "application/vnd.google-earth.kmz"},
- {"xls", "application/vnd.ms-excel"},
- {"eot", "application/vnd.ms-fontobject"},
- {"ppt", "application/vnd.ms-powerpoint"},
- {"odg", "application/vnd.oasis.opendocument.graphics"},
- {"odp", "application/vnd.oasis.opendocument.presentation"},
- {"ods", "application/vnd.oasis.opendocument.spreadsheet"},
- {"odt", "application/vnd.oasis.opendocument.text"},
- {"pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation"},
- {"xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},
- {"docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document"},
- {"wmlc", "application/vnd.wap.wmlc"},
- {"wasm", "application/wasm"},
- {"7z", "application/x-7z-compressed"},
- {"cco", "application/x-cocoa"},
- {"jardiff", "application/x-java-archive-diff"},
- {"jnlp", "application/x-java-jnlp-file"},
- {"run", "application/x-makeself"},
- {"pm", "application/x-perl"},
- {"pl", "application/x-perl"},
- {"pdb", "application/x-pilot"},
- {"prc", "application/x-pilot"},
- {"rar", "application/x-rar-compressed"},
- {"rpm", "application/x-redhat-package-manager"},
- {"sea", "application/x-sea"},
- {"swf", "application/x-shockwave-flash"},
- {"sit", "application/x-stuffit"},
- {"tk", "application/x-tcl"},
- {"tcl", "application/x-tcl"},
- {"crt", "application/x-x509-ca-cert"},
- {"pem", "application/x-x509-ca-cert"},
- {"der", "application/x-x509-ca-cert"},
- {"xpi", "application/x-xpinstall"},
- {"xhtml", "application/xhtml+xml"},
- {"xspf", "application/xspf+xml"},
- {"zip", "application/zip"},
- {"dll", "application/octet-stream"},
- {"exe", "application/octet-stream"},
- {"bin", "application/octet-stream"},
- {"deb", "application/octet-stream"},
- {"dmg", "application/octet-stream"},
- {"img", "application/octet-stream"},
- {"iso", "application/octet-stream"},
- {"msm", "application/octet-stream"},
- {"msp", "application/octet-stream"},
- {"msi", "application/octet-stream"},
- {"kar", "audio/midi"},
- {"midi", "audio/midi"},
- {"mid", "audio/midi"},
- {"mp3", "audio/mpeg"},
- {"ogg", "audio/ogg"},
- {"m4a", "audio/x-m4a"},
- {"ra", "audio/x-realaudio"},
- {"3gp", "video/3gpp"},
- {"3gpp", "video/3gpp"},
- {"ts", "video/mp2t"},
- {"mp4", "video/mp4"},
- {"mpg", "video/mpeg"},
- {"mpeg", "video/mpeg"},
- {"mov", "video/quicktime"},
- {"webm", "video/webm"},
- {"flv", "video/x-flv"},
- {"m4v", "video/x-m4v"},
- {"mng", "video/x-mng"},
- {"asf", "video/x-ms-asf"},
- {"asx", "video/x-ms-asf"},
- {"wmv", "video/x-ms-wmv"},
- {"avi", "video/x-msvideo"}};
-}
-
-
-#include <string>
-
-namespace crow
-{
- /// An abstract class that allows any other class to be returned by a handler.
- struct returnable
- {
- std::string content_type;
- virtual std::string dump() const = 0;
-
- returnable(std::string ctype):
- content_type{ctype}
- {}
-
- virtual ~returnable(){};
- };
-} // namespace crow
-
-
-#include <stdio.h>
-#include <string.h>
-#include <string>
-#include <vector>
-#include <unordered_map>
-#include <iostream>
-#include <memory>
-
-namespace crow
-{
-
-// ----------------------------------------------------------------------------
-// qs_parse (modified)
-// https://github.com/bartgrantham/qs_parse
-// ----------------------------------------------------------------------------
-/* Similar to strncmp, but handles URL-encoding for either string */
-int qs_strncmp(const char* s, const char* qs, size_t n);
-
-
-/* Finds the beginning of each key/value pair and stores a pointer in qs_kv.
- * Also decodes the value portion of the k/v pair *in-place*. In a future
- * enhancement it will also have a compile-time option of sorting qs_kv
- * alphabetically by key. */
-size_t qs_parse(char* qs, char* qs_kv[], size_t qs_kv_size, bool parse_url);
-
-
-/* Used by qs_parse to decode the value portion of a k/v pair */
-int qs_decode(char * qs);
-
-
-/* Looks up the value according to the key on a pre-processed query string
- * A future enhancement will be a compile-time option to look up the key
- * in a pre-sorted qs_kv array via a binary search. */
-//char * qs_k2v(const char * key, char * qs_kv[], int qs_kv_size);
- char * qs_k2v(const char * key, char * const * qs_kv, size_t qs_kv_size, int nth);
-
-
-/* Non-destructive lookup of value, based on key. User provides the
- * destinaton string and length. */
-char * qs_scanvalue(const char * key, const char * qs, char * val, size_t val_len);
-
-// TODO: implement sorting of the qs_kv array; for now ensure it's not compiled
-#undef _qsSORTING
-
-// isxdigit _is_ available in <ctype.h>, but let's avoid another header instead
-#define CROW_QS_ISHEX(x) ((((x)>='0'&&(x)<='9') || ((x)>='A'&&(x)<='F') || ((x)>='a'&&(x)<='f')) ? 1 : 0)
-#define CROW_QS_HEX2DEC(x) (((x)>='0'&&(x)<='9') ? (x)-48 : ((x)>='A'&&(x)<='F') ? (x)-55 : ((x)>='a'&&(x)<='f') ? (x)-87 : 0)
-#define CROW_QS_ISQSCHR(x) ((((x)=='=')||((x)=='#')||((x)=='&')||((x)=='\0')) ? 0 : 1)
-
-inline int qs_strncmp(const char * s, const char * qs, size_t n)
-{
- unsigned char u1, u2, unyb, lnyb;
-
- while(n-- > 0)
- {
- u1 = static_cast<unsigned char>(*s++);
- u2 = static_cast<unsigned char>(*qs++);
-
- if ( ! CROW_QS_ISQSCHR(u1) ) { u1 = '\0'; }
- if ( ! CROW_QS_ISQSCHR(u2) ) { u2 = '\0'; }
-
- if ( u1 == '+' ) { u1 = ' '; }
- if ( u1 == '%' ) // easier/safer than scanf
- {
- unyb = static_cast<unsigned char>(*s++);
- lnyb = static_cast<unsigned char>(*s++);
- if ( CROW_QS_ISHEX(unyb) && CROW_QS_ISHEX(lnyb) )
- u1 = (CROW_QS_HEX2DEC(unyb) * 16) + CROW_QS_HEX2DEC(lnyb);
- else
- u1 = '\0';
- }
-
- if ( u2 == '+' ) { u2 = ' '; }
- if ( u2 == '%' ) // easier/safer than scanf
- {
- unyb = static_cast<unsigned char>(*qs++);
- lnyb = static_cast<unsigned char>(*qs++);
- if ( CROW_QS_ISHEX(unyb) && CROW_QS_ISHEX(lnyb) )
- u2 = (CROW_QS_HEX2DEC(unyb) * 16) + CROW_QS_HEX2DEC(lnyb);
- else
- u2 = '\0';
- }
-
- if ( u1 != u2 )
- return u1 - u2;
- if ( u1 == '\0' )
- return 0;
- }
- if ( CROW_QS_ISQSCHR(*qs) )
- return -1;
- else
- return 0;
-}
-
-
-inline size_t qs_parse(char* qs, char* qs_kv[], size_t qs_kv_size, bool parse_url = true)
-{
- size_t i, j;
- char * substr_ptr;
-
- for(i=0; i<qs_kv_size; i++) qs_kv[i] = NULL;
-
- // find the beginning of the k/v substrings or the fragment
- substr_ptr = parse_url ? qs + strcspn(qs, "?#") : qs;
- if (parse_url)
- {
- if (substr_ptr[0] != '\0')
- substr_ptr++;
- else
- return 0; // no query or fragment
- }
-
- i=0;
- while(i<qs_kv_size)
- {
- qs_kv[i] = substr_ptr;
- j = strcspn(substr_ptr, "&");
- if ( substr_ptr[j] == '\0' ) { i++; break; } // x &'s -> means x iterations of this loop -> means *x+1* k/v pairs
- substr_ptr += j + 1;
- i++;
- }
-
- // we only decode the values in place, the keys could have '='s in them
- // which will hose our ability to distinguish keys from values later
- for(j=0; j<i; j++)
- {
- substr_ptr = qs_kv[j] + strcspn(qs_kv[j], "=&#");
- if ( substr_ptr[0] == '&' || substr_ptr[0] == '\0') // blank value: skip decoding
- substr_ptr[0] = '\0';
- else
- qs_decode(++substr_ptr);
- }
-
-#ifdef _qsSORTING
-// TODO: qsort qs_kv, using qs_strncmp() for the comparison
-#endif
-
- return i;
-}
-
-
-inline int qs_decode(char * qs)
-{
- int i=0, j=0;
-
- while( CROW_QS_ISQSCHR(qs[j]) )
- {
- if ( qs[j] == '+' ) { qs[i] = ' '; }
- else if ( qs[j] == '%' ) // easier/safer than scanf
- {
- if ( ! CROW_QS_ISHEX(qs[j+1]) || ! CROW_QS_ISHEX(qs[j+2]) )
- {
- qs[i] = '\0';
- return i;
- }
- qs[i] = (CROW_QS_HEX2DEC(qs[j+1]) * 16) + CROW_QS_HEX2DEC(qs[j+2]);
- j+=2;
- }
- else
- {
- qs[i] = qs[j];
- }
- i++; j++;
- }
- qs[i] = '\0';
-
- return i;
-}
-
-
-inline char * qs_k2v(const char * key, char * const * qs_kv, size_t qs_kv_size, int nth = 0)
-{
- size_t i;
- size_t key_len, skip;
-
- key_len = strlen(key);
-
-#ifdef _qsSORTING
-// TODO: binary search for key in the sorted qs_kv
-#else // _qsSORTING
- for(i=0; i<qs_kv_size; i++)
- {
- // we rely on the unambiguous '=' to find the value in our k/v pair
- if ( qs_strncmp(key, qs_kv[i], key_len) == 0 )
- {
- skip = strcspn(qs_kv[i], "=");
- if ( qs_kv[i][skip] == '=' )
- skip++;
- // return (zero-char value) ? ptr to trailing '\0' : ptr to value
- if(nth == 0)
- return qs_kv[i] + skip;
- else
- --nth;
- }
- }
-#endif // _qsSORTING
-
- return nullptr;
-}
-
-inline std::unique_ptr<std::pair<std::string, std::string>> qs_dict_name2kv(const char * dict_name, char * const * qs_kv, size_t qs_kv_size, int nth = 0)
-{
- size_t i;
- size_t name_len, skip_to_eq, skip_to_brace_open, skip_to_brace_close;
-
- name_len = strlen(dict_name);
-
-#ifdef _qsSORTING
-// TODO: binary search for key in the sorted qs_kv
-#else // _qsSORTING
- for(i=0; i<qs_kv_size; i++)
- {
- if ( strncmp(dict_name, qs_kv[i], name_len) == 0 )
- {
- skip_to_eq = strcspn(qs_kv[i], "=");
- if ( qs_kv[i][skip_to_eq] == '=' )
- skip_to_eq++;
- skip_to_brace_open = strcspn(qs_kv[i], "[");
- if ( qs_kv[i][skip_to_brace_open] == '[' )
- skip_to_brace_open++;
- skip_to_brace_close = strcspn(qs_kv[i], "]");
-
- if ( skip_to_brace_open <= skip_to_brace_close &&
- skip_to_brace_open > 0 &&
- skip_to_brace_close > 0 &&
- nth == 0 )
- {
- auto key = std::string(qs_kv[i] + skip_to_brace_open, skip_to_brace_close - skip_to_brace_open);
- auto value = std::string(qs_kv[i] + skip_to_eq);
- return std::unique_ptr<std::pair<std::string, std::string>>(new std::pair<std::string, std::string>(key, value));
- }
- else
- {
- --nth;
- }
- }
- }
-#endif // _qsSORTING
-
- return nullptr;
-}
-
-
-inline char * qs_scanvalue(const char * key, const char * qs, char * val, size_t val_len)
-{
- size_t i, key_len;
- const char * tmp;
-
- // find the beginning of the k/v substrings
- if ( (tmp = strchr(qs, '?')) != NULL )
- qs = tmp + 1;
-
- key_len = strlen(key);
- while(qs[0] != '#' && qs[0] != '\0')
- {
- if ( qs_strncmp(key, qs, key_len) == 0 )
- break;
- qs += strcspn(qs, "&") + 1;
- }
-
- if ( qs[0] == '\0' ) return NULL;
-
- qs += strcspn(qs, "=&#");
- if ( qs[0] == '=' )
- {
- qs++;
- i = strcspn(qs, "&=#");
-#ifdef _MSC_VER
- strncpy_s(val, val_len, qs, (val_len - 1)<(i + 1) ? (val_len - 1) : (i + 1));
-#else
- strncpy(val, qs, (val_len - 1)<(i + 1) ? (val_len - 1) : (i + 1));
-#endif
- qs_decode(val);
- }
- else
- {
- if ( val_len > 0 )
- val[0] = '\0';
- }
-
- return val;
-}
-}
-// ----------------------------------------------------------------------------
-
-
-namespace crow
-{
- struct request;
- /// A class to represent any data coming after the `?` in the request URL into key-value pairs.
- class query_string
- {
- public:
- static const int MAX_KEY_VALUE_PAIRS_COUNT = 256;
-
- query_string() = default;
-
- query_string(const query_string& qs):
- url_(qs.url_)
- {
- for (auto p : qs.key_value_pairs_)
- {
- key_value_pairs_.push_back((char*)(p - qs.url_.c_str() + url_.c_str()));
- }
- }
-
- query_string& operator=(const query_string& qs)
- {
- url_ = qs.url_;
- key_value_pairs_.clear();
- for (auto p : qs.key_value_pairs_)
- {
- key_value_pairs_.push_back((char*)(p - qs.url_.c_str() + url_.c_str()));
- }
- return *this;
- }
-
- query_string& operator=(query_string&& qs) noexcept
- {
- key_value_pairs_ = std::move(qs.key_value_pairs_);
- char* old_data = (char*)qs.url_.c_str();
- url_ = std::move(qs.url_);
- for (auto& p : key_value_pairs_)
- {
- p += (char*)url_.c_str() - old_data;
- }
- return *this;
- }
-
-
- query_string(std::string params, bool url = true):
- url_(std::move(params))
- {
- if (url_.empty())
- return;
-
- key_value_pairs_.resize(MAX_KEY_VALUE_PAIRS_COUNT);
- size_t count = qs_parse(&url_[0], &key_value_pairs_[0], MAX_KEY_VALUE_PAIRS_COUNT, url);
-
- key_value_pairs_.resize(count);
- key_value_pairs_.shrink_to_fit();
- }
-
- void clear()
- {
- key_value_pairs_.clear();
- url_.clear();
- }
-
- friend std::ostream& operator<<(std::ostream& os, const query_string& qs)
- {
- os << "[ ";
- for (size_t i = 0; i < qs.key_value_pairs_.size(); ++i)
- {
- if (i)
- os << ", ";
- os << qs.key_value_pairs_[i];
- }
- os << " ]";
- return os;
- }
-
- /// Get a value from a name, used for `?name=value`.
-
- ///
- /// Note: this method returns the value of the first occurrence of the key only, to return all occurrences, see \ref get_list().
- char* get(const std::string& name) const
- {
- char* ret = qs_k2v(name.c_str(), key_value_pairs_.data(), key_value_pairs_.size());
- return ret;
- }
-
- /// Works similar to \ref get() except it removes the item from the query string.
- char* pop(const std::string& name)
- {
- char* ret = get(name);
- if (ret != nullptr)
- {
- for (unsigned int i = 0; i < key_value_pairs_.size(); i++)
- {
- std::string str_item(key_value_pairs_[i]);
- if (str_item.substr(0, name.size() + 1) == name + '=')
- {
- key_value_pairs_.erase(key_value_pairs_.begin() + i);
- break;
- }
- }
- }
- return ret;
- }
-
- /// Returns a list of values, passed as `?name[]=value1&name[]=value2&...name[]=valuen` with n being the size of the list.
-
- ///
- /// Note: Square brackets in the above example are controlled by `use_brackets` boolean (true by default). If set to false, the example becomes `?name=value1,name=value2...name=valuen`
- std::vector<char*> get_list(const std::string& name, bool use_brackets = true) const
- {
- std::vector<char*> ret;
- std::string plus = name + (use_brackets ? "[]" : "");
- char* element = nullptr;
-
- int count = 0;
- while (1)
- {
- element = qs_k2v(plus.c_str(), key_value_pairs_.data(), key_value_pairs_.size(), count++);
- if (!element)
- break;
- ret.push_back(element);
- }
- return ret;
- }
-
- /// Similar to \ref get_list() but it removes the
- std::vector<char*> pop_list(const std::string& name, bool use_brackets = true)
- {
- std::vector<char*> ret = get_list(name, use_brackets);
- if (!ret.empty())
- {
- for (unsigned int i = 0; i < key_value_pairs_.size(); i++)
- {
- std::string str_item(key_value_pairs_[i]);
- if ((use_brackets ? (str_item.substr(0, name.size() + 3) == name + "[]=") : (str_item.substr(0, name.size() + 1) == name + '=')))
- {
- key_value_pairs_.erase(key_value_pairs_.begin() + i--);
- }
- }
- }
- return ret;
- }
-
- /// Works similar to \ref get_list() except the brackets are mandatory must not be empty.
-
- ///
- /// For example calling `get_dict(yourname)` on `?yourname[sub1]=42&yourname[sub2]=84` would give a map containing `{sub1 : 42, sub2 : 84}`.
- ///
- /// if your query string has both empty brackets and ones with a key inside, use pop_list() to get all the values without a key before running this method.
- std::unordered_map<std::string, std::string> get_dict(const std::string& name) const
- {
- std::unordered_map<std::string, std::string> ret;
-
- int count = 0;
- while (1)
- {
- if (auto element = qs_dict_name2kv(name.c_str(), key_value_pairs_.data(), key_value_pairs_.size(), count++))
- ret.insert(*element);
- else
- break;
- }
- return ret;
- }
-
- /// Works the same as \ref get_dict() but removes the values from the query string.
- std::unordered_map<std::string, std::string> pop_dict(const std::string& name)
- {
- std::unordered_map<std::string, std::string> ret = get_dict(name);
- if (!ret.empty())
- {
- for (unsigned int i = 0; i < key_value_pairs_.size(); i++)
- {
- std::string str_item(key_value_pairs_[i]);
- if (str_item.substr(0, name.size() + 1) == name + '[')
- {
- key_value_pairs_.erase(key_value_pairs_.begin() + i--);
- }
- }
- }
- return ret;
- }
-
- std::vector<std::string> keys() const
- {
- std::vector<std::string> keys;
- keys.reserve(key_value_pairs_.size());
-
- for (const char* const element : key_value_pairs_)
- {
- const char* delimiter = strchr(element, '=');
- if (delimiter)
- keys.emplace_back(element, delimiter);
- else
- keys.emplace_back(element);
- }
-
- return keys;
- }
-
- private:
- std::string url_;
- std::vector<char*> key_value_pairs_;
- };
-
-} // namespace crow
-
-#ifdef CROW_ENABLE_COMPRESSION
-
-#include <string>
-#include <zlib.h>
-
-// http://zlib.net/manual.html
-namespace crow // NOTE: Already documented in "crow/app.h"
-{
- namespace compression
- {
- // Values used in the 'windowBits' parameter for deflateInit2.
- enum algorithm
- {
- // 15 is the default value for deflate
- DEFLATE = 15,
- // windowBits can also be greater than 15 for optional gzip encoding.
- // Add 16 to windowBits to write a simple gzip header and trailer around the compressed data instead of a zlib wrapper.
- GZIP = 15 | 16,
- };
-
- inline std::string compress_string(std::string const& str, algorithm algo)
- {
- std::string compressed_str;
- z_stream stream{};
- // Initialize with the default values
- if (::deflateInit2(&stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, algo, 8, Z_DEFAULT_STRATEGY) == Z_OK)
- {
- char buffer[8192];
-
- stream.avail_in = str.size();
- // zlib does not take a const pointer. The data is not altered.
- stream.next_in = const_cast<Bytef*>(reinterpret_cast<const Bytef*>(str.c_str()));
-
- int code = Z_OK;
- do
- {
- stream.avail_out = sizeof(buffer);
- stream.next_out = reinterpret_cast<Bytef*>(&buffer[0]);
-
- code = ::deflate(&stream, Z_FINISH);
- // Successful and non-fatal error code returned by deflate when used with Z_FINISH flush
- if (code == Z_OK || code == Z_STREAM_END)
- {
- std::copy(&buffer[0], &buffer[sizeof(buffer) - stream.avail_out], std::back_inserter(compressed_str));
- }
-
- } while (code == Z_OK);
-
- if (code != Z_STREAM_END)
- compressed_str.clear();
-
- ::deflateEnd(&stream);
- }
-
- return compressed_str;
- }
-
- inline std::string decompress_string(std::string const& deflated_string)
- {
- std::string inflated_string;
- Bytef tmp[8192];
-
- z_stream zstream{};
- zstream.avail_in = deflated_string.size();
- // Nasty const_cast but zlib won't alter its contents
- zstream.next_in = const_cast<Bytef*>(reinterpret_cast<Bytef const*>(deflated_string.c_str()));
- // Initialize with automatic header detection, for gzip support
- if (::inflateInit2(&zstream, MAX_WBITS | 32) == Z_OK)
- {
- do
- {
- zstream.avail_out = sizeof(tmp);
- zstream.next_out = &tmp[0];
-
- auto ret = ::inflate(&zstream, Z_NO_FLUSH);
- if (ret == Z_OK || ret == Z_STREAM_END)
- {
- std::copy(&tmp[0], &tmp[sizeof(tmp) - zstream.avail_out], std::back_inserter(inflated_string));
- }
- else
- {
- // Something went wrong with inflate; make sure we return an empty string
- inflated_string.clear();
- break;
- }
-
- } while (zstream.avail_out == 0);
-
- // Free zlib's internal memory
- ::inflateEnd(&zstream);
- }
-
- return inflated_string;
- }
- } // namespace compression
-} // namespace crow
-
-#endif
-
-/*
- * SHA1 Wikipedia Page: http://en.wikipedia.org/wiki/SHA-1
- *
- * Copyright (c) 2012-22 SAURAV MOHAPATRA <mohaps@gmail.com>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-/**
- * \file TinySHA1.hpp
- * \author SAURAV MOHAPATRA <mohaps@gmail.com>
- * \date 2012-22
- * \brief TinySHA1 - a header only implementation of the SHA1 algorithm in C++. Based
- * on the implementation in boost::uuid::details.
- *
- * In this file are defined:
- * - sha1::SHA1
- */
-#ifndef _TINY_SHA1_HPP_
-#define _TINY_SHA1_HPP_
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-#include <stdint.h>
-
-/**
- * \namespace sha1
- * \brief Here is defined the SHA1 class
- */
-namespace sha1
-{
- /**
- * \class SHA1
- * \brief A tiny SHA1 algorithm implementation used internally in the
- * Crow server (specifically in crow/websocket.h).
- */
- class SHA1
- {
- public:
- typedef uint32_t digest32_t[5];
- typedef uint8_t digest8_t[20];
- inline static uint32_t LeftRotate(uint32_t value, size_t count) {
- return (value << count) ^ (value >> (32-count));
- }
- SHA1(){ reset(); }
- virtual ~SHA1() {}
- SHA1(const SHA1& s) { *this = s; }
- const SHA1& operator = (const SHA1& s) {
- memcpy(m_digest, s.m_digest, 5 * sizeof(uint32_t));
- memcpy(m_block, s.m_block, 64);
- m_blockByteIndex = s.m_blockByteIndex;
- m_byteCount = s.m_byteCount;
- return *this;
- }
- SHA1& reset() {
- m_digest[0] = 0x67452301;
- m_digest[1] = 0xEFCDAB89;
- m_digest[2] = 0x98BADCFE;
- m_digest[3] = 0x10325476;
- m_digest[4] = 0xC3D2E1F0;
- m_blockByteIndex = 0;
- m_byteCount = 0;
- return *this;
- }
- SHA1& processByte(uint8_t octet) {
- this->m_block[this->m_blockByteIndex++] = octet;
- ++this->m_byteCount;
- if(m_blockByteIndex == 64) {
- this->m_blockByteIndex = 0;
- processBlock();
- }
- return *this;
- }
- SHA1& processBlock(const void* const start, const void* const end) {
- const uint8_t* begin = static_cast<const uint8_t*>(start);
- const uint8_t* finish = static_cast<const uint8_t*>(end);
- while(begin != finish) {
- processByte(*begin);
- begin++;
- }
- return *this;
- }
- SHA1& processBytes(const void* const data, size_t len) {
- const uint8_t* block = static_cast<const uint8_t*>(data);
- processBlock(block, block + len);
- return *this;
- }
- const uint32_t* getDigest(digest32_t digest) {
- size_t bitCount = this->m_byteCount * 8;
- processByte(0x80);
- if (this->m_blockByteIndex > 56) {
- while (m_blockByteIndex != 0) {
- processByte(0);
- }
- while (m_blockByteIndex < 56) {
- processByte(0);
- }
- } else {
- while (m_blockByteIndex < 56) {
- processByte(0);
- }
- }
- processByte(0);
- processByte(0);
- processByte(0);
- processByte(0);
- processByte( static_cast<unsigned char>((bitCount>>24) & 0xFF));
- processByte( static_cast<unsigned char>((bitCount>>16) & 0xFF));
- processByte( static_cast<unsigned char>((bitCount>>8 ) & 0xFF));
- processByte( static_cast<unsigned char>((bitCount) & 0xFF));
-
- memcpy(digest, m_digest, 5 * sizeof(uint32_t));
- return digest;
- }
- const uint8_t* getDigestBytes(digest8_t digest) {
- digest32_t d32;
- getDigest(d32);
- size_t di = 0;
- digest[di++] = ((d32[0] >> 24) & 0xFF);
- digest[di++] = ((d32[0] >> 16) & 0xFF);
- digest[di++] = ((d32[0] >> 8) & 0xFF);
- digest[di++] = ((d32[0]) & 0xFF);
-
- digest[di++] = ((d32[1] >> 24) & 0xFF);
- digest[di++] = ((d32[1] >> 16) & 0xFF);
- digest[di++] = ((d32[1] >> 8) & 0xFF);
- digest[di++] = ((d32[1]) & 0xFF);
-
- digest[di++] = ((d32[2] >> 24) & 0xFF);
- digest[di++] = ((d32[2] >> 16) & 0xFF);
- digest[di++] = ((d32[2] >> 8) & 0xFF);
- digest[di++] = ((d32[2]) & 0xFF);
-
- digest[di++] = ((d32[3] >> 24) & 0xFF);
- digest[di++] = ((d32[3] >> 16) & 0xFF);
- digest[di++] = ((d32[3] >> 8) & 0xFF);
- digest[di++] = ((d32[3]) & 0xFF);
-
- digest[di++] = ((d32[4] >> 24) & 0xFF);
- digest[di++] = ((d32[4] >> 16) & 0xFF);
- digest[di++] = ((d32[4] >> 8) & 0xFF);
- digest[di++] = ((d32[4]) & 0xFF);
- return digest;
- }
-
- protected:
- void processBlock() {
- uint32_t w[80];
- for (size_t i = 0; i < 16; i++) {
- w[i] = (m_block[i*4 + 0] << 24);
- w[i] |= (m_block[i*4 + 1] << 16);
- w[i] |= (m_block[i*4 + 2] << 8);
- w[i] |= (m_block[i*4 + 3]);
- }
- for (size_t i = 16; i < 80; i++) {
- w[i] = LeftRotate((w[i-3] ^ w[i-8] ^ w[i-14] ^ w[i-16]), 1);
- }
-
- uint32_t a = m_digest[0];
- uint32_t b = m_digest[1];
- uint32_t c = m_digest[2];
- uint32_t d = m_digest[3];
- uint32_t e = m_digest[4];
-
- for (std::size_t i=0; i<80; ++i) {
- uint32_t f = 0;
- uint32_t k = 0;
-
- if (i<20) {
- f = (b & c) | (~b & d);
- k = 0x5A827999;
- } else if (i<40) {
- f = b ^ c ^ d;
- k = 0x6ED9EBA1;
- } else if (i<60) {
- f = (b & c) | (b & d) | (c & d);
- k = 0x8F1BBCDC;
- } else {
- f = b ^ c ^ d;
- k = 0xCA62C1D6;
- }
- uint32_t temp = LeftRotate(a, 5) + f + e + k + w[i];
- e = d;
- d = c;
- c = LeftRotate(b, 30);
- b = a;
- a = temp;
- }
-
- m_digest[0] += a;
- m_digest[1] += b;
- m_digest[2] += c;
- m_digest[3] += d;
- m_digest[4] += e;
- }
- private:
- digest32_t m_digest;
- uint8_t m_block[64];
- size_t m_blockByteIndex;
- size_t m_byteCount;
- };
-}
-#endif
-
-// settings for crow
-// TODO(ipkn) replace with runtime config. libucl?
-
-/* #ifdef - enables debug mode */
-//#define CROW_ENABLE_DEBUG
-
-/* #ifdef - enables logging */
-#define CROW_ENABLE_LOGGING
-
-/* #ifdef - enforces section 5.2 and 6.1 of RFC6455 (only accepting masked messages from clients) */
-//#define CROW_ENFORCE_WS_SPEC
-
-/* #define - specifies log level */
-/*
- Debug = 0
- Info = 1
- Warning = 2
- Error = 3
- Critical = 4
-
- default to INFO
-*/
-#ifndef CROW_LOG_LEVEL
-#define CROW_LOG_LEVEL 1
-#endif
-
-#ifndef CROW_STATIC_DIRECTORY
-#define CROW_STATIC_DIRECTORY "static/"
-#endif
-#ifndef CROW_STATIC_ENDPOINT
-#define CROW_STATIC_ENDPOINT "/static/<path>"
-#endif
-
-// compiler flags
-#if defined(_MSVC_LANG) && _MSVC_LANG >= 201402L
-#define CROW_CAN_USE_CPP14
-#endif
-#if __cplusplus >= 201402L
-#define CROW_CAN_USE_CPP14
-#endif
-
-#if defined(_MSVC_LANG) && _MSVC_LANG >= 201703L
-#define CROW_CAN_USE_CPP17
-#endif
-#if __cplusplus >= 201703L
-#define CROW_CAN_USE_CPP17
-#if defined(__GNUC__) && __GNUC__ < 8
-#define CROW_FILESYSTEM_IS_EXPERIMENTAL
-#endif
-#endif
-
-#if defined(_MSC_VER)
-#if _MSC_VER < 1900
-#define CROW_MSVC_WORKAROUND
-#define constexpr const
-#define noexcept throw()
-#endif
-#endif
-
-#if defined(__GNUC__) && __GNUC__ == 8 && __GNUC_MINOR__ < 4
-#if __cplusplus > 201103L
-#define CROW_GCC83_WORKAROUND
-#else
-#error "GCC 8.1 - 8.3 has a bug that prevents Crow from compiling with C++11. Please update GCC to > 8.3 or use C++ > 11."
-#endif
-#endif
-
-
-#ifdef CROW_USE_BOOST
-#include <boost/asio.hpp>
-#include <boost/asio/version.hpp>
-#ifdef CROW_ENABLE_SSL
-#include <boost/asio/ssl.hpp>
-#endif
-#else
-#ifndef ASIO_STANDALONE
-#define ASIO_STANDALONE
-#endif
-#include <asio.hpp>
-#include <asio/version.hpp>
-#ifdef CROW_ENABLE_SSL
-#include <asio/ssl.hpp>
-#endif
-#endif
-
-#if (CROW_USE_BOOST && BOOST_VERSION >= 107000) || (ASIO_VERSION >= 101300)
-#define GET_IO_SERVICE(s) ((asio::io_context&)(s).get_executor().context())
-#else
-#define GET_IO_SERVICE(s) ((s).get_io_service())
-#endif
-
-namespace crow
-{
-#ifdef CROW_USE_BOOST
- namespace asio = boost::asio;
- using error_code = boost::system::error_code;
-#else
- using error_code = asio::error_code;
-#endif
- using tcp = asio::ip::tcp;
-
- /// A wrapper for the asio::ip::tcp::socket and asio::ssl::stream
- struct SocketAdaptor
- {
- using context = void;
- SocketAdaptor(asio::io_service& io_service, context*):
- socket_(io_service)
- {}
-
- asio::io_service& get_io_service()
- {
- return GET_IO_SERVICE(socket_);
- }
-
- /// Get the TCP socket handling data trasfers, regardless of what layer is handling transfers on top of the socket.
- tcp::socket& raw_socket()
- {
- return socket_;
- }
-
- /// Get the object handling data transfers, this can be either a TCP socket or an SSL stream (if SSL is enabled).
- tcp::socket& socket()
- {
- return socket_;
- }
-
- tcp::endpoint remote_endpoint()
- {
- return socket_.remote_endpoint();
- }
-
- bool is_open()
- {
- return socket_.is_open();
- }
-
- void close()
- {
- error_code ec;
- socket_.close(ec);
- }
-
- void shutdown_readwrite()
- {
- error_code ec;
- socket_.shutdown(asio::socket_base::shutdown_type::shutdown_both, ec);
- }
-
- void shutdown_write()
- {
- error_code ec;
- socket_.shutdown(asio::socket_base::shutdown_type::shutdown_send, ec);
- }
-
- void shutdown_read()
- {
- error_code ec;
- socket_.shutdown(asio::socket_base::shutdown_type::shutdown_receive, ec);
- }
-
- template<typename F>
- void start(F f)
- {
- f(error_code());
- }
-
- tcp::socket socket_;
- };
-
-#ifdef CROW_ENABLE_SSL
- struct SSLAdaptor
- {
- using context = asio::ssl::context;
- using ssl_socket_t = asio::ssl::stream<tcp::socket>;
- SSLAdaptor(asio::io_service& io_service, context* ctx):
- ssl_socket_(new ssl_socket_t(io_service, *ctx))
- {}
-
- asio::ssl::stream<tcp::socket>& socket()
- {
- return *ssl_socket_;
- }
-
- tcp::socket::lowest_layer_type&
- raw_socket()
- {
- return ssl_socket_->lowest_layer();
- }
-
- tcp::endpoint remote_endpoint()
- {
- return raw_socket().remote_endpoint();
- }
-
- bool is_open()
- {
- return ssl_socket_ ? raw_socket().is_open() : false;
- }
-
- void close()
- {
- if (is_open())
- {
- error_code ec;
- raw_socket().close(ec);
- }
- }
-
- void shutdown_readwrite()
- {
- if (is_open())
- {
- error_code ec;
- raw_socket().shutdown(asio::socket_base::shutdown_type::shutdown_both, ec);
- }
- }
-
- void shutdown_write()
- {
- if (is_open())
- {
- error_code ec;
- raw_socket().shutdown(asio::socket_base::shutdown_type::shutdown_send, ec);
- }
- }
-
- void shutdown_read()
- {
- if (is_open())
- {
- error_code ec;
- raw_socket().shutdown(asio::socket_base::shutdown_type::shutdown_receive, ec);
- }
- }
-
- asio::io_service& get_io_service()
- {
- return GET_IO_SERVICE(raw_socket());
- }
-
- template<typename F>
- void start(F f)
- {
- ssl_socket_->async_handshake(asio::ssl::stream_base::server,
- [f](const error_code& ec) {
- f(ec);
- });
- }
-
- std::unique_ptr<asio::ssl::stream<tcp::socket>> ssl_socket_;
- };
-#endif
-} // namespace crow
-
-
-#include <cstdint>
-#include <stdexcept>
-#include <tuple>
-#include <type_traits>
-#include <cstring>
-#include <cctype>
-#include <functional>
-#include <string>
-#include <sstream>
-#include <unordered_map>
-#include <random>
-#include <algorithm>
-
-
-#if defined(CROW_CAN_USE_CPP17) && !defined(CROW_FILESYSTEM_IS_EXPERIMENTAL)
-#include <filesystem>
-#endif
-
-// TODO(EDev): Adding C++20's [[likely]] and [[unlikely]] attributes might be useful
-#if defined(__GNUG__) || defined(__clang__)
-#define CROW_LIKELY(X) __builtin_expect(!!(X), 1)
-#define CROW_UNLIKELY(X) __builtin_expect(!!(X), 0)
-#else
-#define CROW_LIKELY(X) (X)
-#define CROW_UNLIKELY(X) (X)
-#endif
-
-namespace crow
-{
- /// @cond SKIP
- namespace black_magic
- {
-#ifndef CROW_MSVC_WORKAROUND
- /// Out of Range Exception for const_str
- struct OutOfRange
- {
- OutOfRange(unsigned /*pos*/, unsigned /*length*/) {}
- };
- /// Helper function to throw an exception if i is larger than len
- constexpr unsigned requires_in_range(unsigned i, unsigned len)
- {
- return i >= len ? throw OutOfRange(i, len) : i;
- }
-
- /// A constant string implementation.
- class const_str
- {
- const char* const begin_;
- unsigned size_;
-
- public:
- template<unsigned N>
- constexpr const_str(const char (&arr)[N]):
- begin_(arr), size_(N - 1)
- {
- static_assert(N >= 1, "not a string literal");
- }
- constexpr char operator[](unsigned i) const
- {
- return requires_in_range(i, size_), begin_[i];
- }
-
- constexpr operator const char*() const
- {
- return begin_;
- }
-
- constexpr const char* begin() const { return begin_; }
- constexpr const char* end() const { return begin_ + size_; }
-
- constexpr unsigned size() const
- {
- return size_;
- }
- };
-
- constexpr unsigned find_closing_tag(const_str s, unsigned p)
- {
- return s[p] == '>' ? p : find_closing_tag(s, p + 1);
- }
-
- /// Check that the CROW_ROUTE string is valid
- constexpr bool is_valid(const_str s, unsigned i = 0, int f = 0)
- {
- return i == s.size() ? f == 0 :
- f < 0 || f >= 2 ? false :
- s[i] == '<' ? is_valid(s, i + 1, f + 1) :
- s[i] == '>' ? is_valid(s, i + 1, f - 1) :
- is_valid(s, i + 1, f);
- }
-
- constexpr bool is_equ_p(const char* a, const char* b, unsigned n)
- {
- return *a == 0 && *b == 0 && n == 0 ? true :
- (*a == 0 || *b == 0) ? false :
- n == 0 ? true :
- *a != *b ? false :
- is_equ_p(a + 1, b + 1, n - 1);
- }
-
- constexpr bool is_equ_n(const_str a, unsigned ai, const_str b, unsigned bi, unsigned n)
- {
- return ai + n > a.size() || bi + n > b.size() ? false :
- n == 0 ? true :
- a[ai] != b[bi] ? false :
- is_equ_n(a, ai + 1, b, bi + 1, n - 1);
- }
-
- constexpr bool is_int(const_str s, unsigned i)
- {
- return is_equ_n(s, i, "<int>", 0, 5);
- }
-
- constexpr bool is_uint(const_str s, unsigned i)
- {
- return is_equ_n(s, i, "<uint>", 0, 6);
- }
-
- constexpr bool is_float(const_str s, unsigned i)
- {
- return is_equ_n(s, i, "<float>", 0, 7) ||
- is_equ_n(s, i, "<double>", 0, 8);
- }
-
- constexpr bool is_str(const_str s, unsigned i)
- {
- return is_equ_n(s, i, "<str>", 0, 5) ||
- is_equ_n(s, i, "<string>", 0, 8);
- }
-
- constexpr bool is_path(const_str s, unsigned i)
- {
- return is_equ_n(s, i, "<path>", 0, 6);
- }
-#endif
- template<typename T>
- struct parameter_tag
- {
- static const int value = 0;
- };
-#define CROW_INTERNAL_PARAMETER_TAG(t, i) \
- template<> \
- struct parameter_tag<t> \
- { \
- static const int value = i; \
- }
- CROW_INTERNAL_PARAMETER_TAG(int, 1);
- CROW_INTERNAL_PARAMETER_TAG(char, 1);
- CROW_INTERNAL_PARAMETER_TAG(short, 1);
- CROW_INTERNAL_PARAMETER_TAG(long, 1);
- CROW_INTERNAL_PARAMETER_TAG(long long, 1);
- CROW_INTERNAL_PARAMETER_TAG(unsigned int, 2);
- CROW_INTERNAL_PARAMETER_TAG(unsigned char, 2);
- CROW_INTERNAL_PARAMETER_TAG(unsigned short, 2);
- CROW_INTERNAL_PARAMETER_TAG(unsigned long, 2);
- CROW_INTERNAL_PARAMETER_TAG(unsigned long long, 2);
- CROW_INTERNAL_PARAMETER_TAG(double, 3);
- CROW_INTERNAL_PARAMETER_TAG(std::string, 4);
-#undef CROW_INTERNAL_PARAMETER_TAG
- template<typename... Args>
- struct compute_parameter_tag_from_args_list;
-
- template<>
- struct compute_parameter_tag_from_args_list<>
- {
- static const int value = 0;
- };
-
- template<typename Arg, typename... Args>
- struct compute_parameter_tag_from_args_list<Arg, Args...>
- {
- static const int sub_value =
- compute_parameter_tag_from_args_list<Args...>::value;
- static const int value =
- parameter_tag<typename std::decay<Arg>::type>::value ? sub_value * 6 + parameter_tag<typename std::decay<Arg>::type>::value : sub_value;
- };
-
- static inline bool is_parameter_tag_compatible(uint64_t a, uint64_t b)
- {
- if (a == 0)
- return b == 0;
- if (b == 0)
- return a == 0;
- int sa = a % 6;
- int sb = a % 6;
- if (sa == 5) sa = 4;
- if (sb == 5) sb = 4;
- if (sa != sb)
- return false;
- return is_parameter_tag_compatible(a / 6, b / 6);
- }
-
- static inline unsigned find_closing_tag_runtime(const char* s, unsigned p)
- {
- return s[p] == 0 ? throw std::runtime_error("unmatched tag <") :
- s[p] == '>' ? p :
- find_closing_tag_runtime(s, p + 1);
- }
-
- static inline uint64_t get_parameter_tag_runtime(const char* s, unsigned p = 0)
- {
- return s[p] == 0 ? 0 :
- s[p] == '<' ? (
- std::strncmp(s + p, "<int>", 5) == 0 ? get_parameter_tag_runtime(s, find_closing_tag_runtime(s, p)) * 6 + 1 :
- std::strncmp(s + p, "<uint>", 6) == 0 ? get_parameter_tag_runtime(s, find_closing_tag_runtime(s, p)) * 6 + 2 :
- (std::strncmp(s + p, "<float>", 7) == 0 ||
- std::strncmp(s + p, "<double>", 8) == 0) ?
- get_parameter_tag_runtime(s, find_closing_tag_runtime(s, p)) * 6 + 3 :
- (std::strncmp(s + p, "<str>", 5) == 0 ||
- std::strncmp(s + p, "<string>", 8) == 0) ?
- get_parameter_tag_runtime(s, find_closing_tag_runtime(s, p)) * 6 + 4 :
- std::strncmp(s + p, "<path>", 6) == 0 ? get_parameter_tag_runtime(s, find_closing_tag_runtime(s, p)) * 6 + 5 :
- throw std::runtime_error("invalid parameter type")) :
- get_parameter_tag_runtime(s, p + 1);
- }
-#ifndef CROW_MSVC_WORKAROUND
- constexpr uint64_t get_parameter_tag(const_str s, unsigned p = 0)
- {
- return p == s.size() ? 0 :
- s[p] == '<' ? (
- is_int(s, p) ? get_parameter_tag(s, find_closing_tag(s, p)) * 6 + 1 :
- is_uint(s, p) ? get_parameter_tag(s, find_closing_tag(s, p)) * 6 + 2 :
- is_float(s, p) ? get_parameter_tag(s, find_closing_tag(s, p)) * 6 + 3 :
- is_str(s, p) ? get_parameter_tag(s, find_closing_tag(s, p)) * 6 + 4 :
- is_path(s, p) ? get_parameter_tag(s, find_closing_tag(s, p)) * 6 + 5 :
- throw std::runtime_error("invalid parameter type")) :
- get_parameter_tag(s, p + 1);
- }
-#endif
-
- template<typename... T>
- struct S
- {
- template<typename U>
- using push = S<U, T...>;
- template<typename U>
- using push_back = S<T..., U>;
- template<template<typename... Args> class U>
- using rebind = U<T...>;
- };
-
- // Check whether the template function can be called with specific arguments
- template<typename F, typename Set>
- struct CallHelper;
- template<typename F, typename... Args>
- struct CallHelper<F, S<Args...>>
- {
- template<typename F1, typename... Args1, typename = decltype(std::declval<F1>()(std::declval<Args1>()...))>
- static char __test(int);
-
- template<typename...>
- static int __test(...);
-
- static constexpr bool value = sizeof(__test<F, Args...>(0)) == sizeof(char);
- };
-
- // Check Tuple contains type T
- template<typename T, typename Tuple>
- struct has_type;
-
- template<typename T>
- struct has_type<T, std::tuple<>> : std::false_type
- {};
-
- template<typename T, typename U, typename... Ts>
- struct has_type<T, std::tuple<U, Ts...>> : has_type<T, std::tuple<Ts...>>
- {};
-
- template<typename T, typename... Ts>
- struct has_type<T, std::tuple<T, Ts...>> : std::true_type
- {};
-
- // Find index of type in tuple
- template<class T, class Tuple>
- struct tuple_index;
-
- template<class T, class... Types>
- struct tuple_index<T, std::tuple<T, Types...>>
- {
- static const int value = 0;
- };
-
- template<class T, class U, class... Types>
- struct tuple_index<T, std::tuple<U, Types...>>
- {
- static const int value = 1 + tuple_index<T, std::tuple<Types...>>::value;
- };
-
- // Extract element from forward tuple or get default
-#ifdef CROW_CAN_USE_CPP14
- template<typename T, typename Tup>
- typename std::enable_if<has_type<T&, Tup>::value, typename std::decay<T>::type&&>::type
- tuple_extract(Tup& tup)
- {
- return std::move(std::get<T&>(tup));
- }
-#else
- template<typename T, typename Tup>
- typename std::enable_if<has_type<T&, Tup>::value, T&&>::type
- tuple_extract(Tup& tup)
- {
- return std::move(std::get<tuple_index<T&, Tup>::value>(tup));
- }
-#endif
-
- template<typename T, typename Tup>
- typename std::enable_if<!has_type<T&, Tup>::value, T>::type
- tuple_extract(Tup&)
- {
- return T{};
- }
-
- // Kind of fold expressions in C++11
- template<bool...>
- struct bool_pack;
- template<bool... bs>
- using all_true = std::is_same<bool_pack<bs..., true>, bool_pack<true, bs...>>;
-
- template<int N>
- struct single_tag_to_type
- {};
-
- template<>
- struct single_tag_to_type<1>
- {
- using type = int64_t;
- };
-
- template<>
- struct single_tag_to_type<2>
- {
- using type = uint64_t;
- };
-
- template<>
- struct single_tag_to_type<3>
- {
- using type = double;
- };
-
- template<>
- struct single_tag_to_type<4>
- {
- using type = std::string;
- };
-
- template<>
- struct single_tag_to_type<5>
- {
- using type = std::string;
- };
-
-
- template<uint64_t Tag>
- struct arguments
- {
- using subarguments = typename arguments<Tag / 6>::type;
- using type =
- typename subarguments::template push<typename single_tag_to_type<Tag % 6>::type>;
- };
-
- template<>
- struct arguments<0>
- {
- using type = S<>;
- };
-
- template<typename... T>
- struct last_element_type
- {
- using type = typename std::tuple_element<sizeof...(T) - 1, std::tuple<T...>>::type;
- };
-
-
- template<>
- struct last_element_type<>
- {};
-
-
- // from http://stackoverflow.com/questions/13072359/c11-compile-time-array-with-logarithmic-evaluation-depth
- template<class T>
- using Invoke = typename T::type;
-
- template<unsigned...>
- struct seq
- {
- using type = seq;
- };
-
- template<class S1, class S2>
- struct concat;
-
- template<unsigned... I1, unsigned... I2>
- struct concat<seq<I1...>, seq<I2...>> : seq<I1..., (sizeof...(I1) + I2)...>
- {};
-
- template<class S1, class S2>
- using Concat = Invoke<concat<S1, S2>>;
-
- template<unsigned N>
- struct gen_seq;
- template<unsigned N>
- using GenSeq = Invoke<gen_seq<N>>;
-
- template<unsigned N>
- struct gen_seq : Concat<GenSeq<N / 2>, GenSeq<N - N / 2>>
- {};
-
- template<>
- struct gen_seq<0> : seq<>
- {};
- template<>
- struct gen_seq<1> : seq<0>
- {};
-
- template<typename Seq, typename Tuple>
- struct pop_back_helper;
-
- template<unsigned... N, typename Tuple>
- struct pop_back_helper<seq<N...>, Tuple>
- {
- template<template<typename... Args> class U>
- using rebind = U<typename std::tuple_element<N, Tuple>::type...>;
- };
-
- template<typename... T>
- struct pop_back //: public pop_back_helper<typename gen_seq<sizeof...(T)-1>::type, std::tuple<T...>>
- {
- template<template<typename... Args> class U>
- using rebind = typename pop_back_helper<typename gen_seq<sizeof...(T) - 1>::type, std::tuple<T...>>::template rebind<U>;
- };
-
- template<>
- struct pop_back<>
- {
- template<template<typename... Args> class U>
- using rebind = U<>;
- };
-
- // from http://stackoverflow.com/questions/2118541/check-if-c0x-parameter-pack-contains-a-type
- template<typename Tp, typename... List>
- struct contains : std::true_type
- {};
-
- template<typename Tp, typename Head, typename... Rest>
- struct contains<Tp, Head, Rest...> : std::conditional<std::is_same<Tp, Head>::value, std::true_type, contains<Tp, Rest...>>::type
- {};
-
- template<typename Tp>
- struct contains<Tp> : std::false_type
- {};
-
- template<typename T>
- struct empty_context
- {};
-
- template<typename T>
- struct promote
- {
- using type = T;
- };
-
-#define CROW_INTERNAL_PROMOTE_TYPE(t1, t2) \
- template<> \
- struct promote<t1> \
- { \
- using type = t2; \
- }
-
- CROW_INTERNAL_PROMOTE_TYPE(char, int64_t);
- CROW_INTERNAL_PROMOTE_TYPE(short, int64_t);
- CROW_INTERNAL_PROMOTE_TYPE(int, int64_t);
- CROW_INTERNAL_PROMOTE_TYPE(long, int64_t);
- CROW_INTERNAL_PROMOTE_TYPE(long long, int64_t);
- CROW_INTERNAL_PROMOTE_TYPE(unsigned char, uint64_t);
- CROW_INTERNAL_PROMOTE_TYPE(unsigned short, uint64_t);
- CROW_INTERNAL_PROMOTE_TYPE(unsigned int, uint64_t);
- CROW_INTERNAL_PROMOTE_TYPE(unsigned long, uint64_t);
- CROW_INTERNAL_PROMOTE_TYPE(unsigned long long, uint64_t);
- CROW_INTERNAL_PROMOTE_TYPE(float, double);
-#undef CROW_INTERNAL_PROMOTE_TYPE
-
- template<typename T>
- using promote_t = typename promote<T>::type;
-
- } // namespace black_magic
-
- namespace detail
- {
-
- template<class T, std::size_t N, class... Args>
- struct get_index_of_element_from_tuple_by_type_impl
- {
- static constexpr auto value = N;
- };
-
- template<class T, std::size_t N, class... Args>
- struct get_index_of_element_from_tuple_by_type_impl<T, N, T, Args...>
- {
- static constexpr auto value = N;
- };
-
- template<class T, std::size_t N, class U, class... Args>
- struct get_index_of_element_from_tuple_by_type_impl<T, N, U, Args...>
- {
- static constexpr auto value = get_index_of_element_from_tuple_by_type_impl<T, N + 1, Args...>::value;
- };
- } // namespace detail
-
- namespace utility
- {
- template<class T, class... Args>
- T& get_element_by_type(std::tuple<Args...>& t)
- {
- return std::get<detail::get_index_of_element_from_tuple_by_type_impl<T, 0, Args...>::value>(t);
- }
-
- template<typename T>
- struct function_traits;
-
-#ifndef CROW_MSVC_WORKAROUND
- template<typename T>
- struct function_traits : public function_traits<decltype(&T::operator())>
- {
- using parent_t = function_traits<decltype(&T::operator())>;
- static const size_t arity = parent_t::arity;
- using result_type = typename parent_t::result_type;
- template<size_t i>
- using arg = typename parent_t::template arg<i>;
- };
-#endif
-
- template<typename ClassType, typename R, typename... Args>
- struct function_traits<R (ClassType::*)(Args...) const>
- {
- static const size_t arity = sizeof...(Args);
-
- typedef R result_type;
-
- template<size_t i>
- using arg = typename std::tuple_element<i, std::tuple<Args...>>::type;
- };
-
- template<typename ClassType, typename R, typename... Args>
- struct function_traits<R (ClassType::*)(Args...)>
- {
- static const size_t arity = sizeof...(Args);
-
- typedef R result_type;
-
- template<size_t i>
- using arg = typename std::tuple_element<i, std::tuple<Args...>>::type;
- };
-
- template<typename R, typename... Args>
- struct function_traits<std::function<R(Args...)>>
- {
- static const size_t arity = sizeof...(Args);
-
- typedef R result_type;
-
- template<size_t i>
- using arg = typename std::tuple_element<i, std::tuple<Args...>>::type;
- };
- /// @endcond
-
- inline static std::string base64encode(const unsigned char* data, size_t size, const char* key = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/")
- {
- std::string ret;
- ret.resize((size + 2) / 3 * 4);
- auto it = ret.begin();
- while (size >= 3)
- {
- *it++ = key[(static_cast<unsigned char>(*data) & 0xFC) >> 2];
- unsigned char h = (static_cast<unsigned char>(*data++) & 0x03) << 4;
- *it++ = key[h | ((static_cast<unsigned char>(*data) & 0xF0) >> 4)];
- h = (static_cast<unsigned char>(*data++) & 0x0F) << 2;
- *it++ = key[h | ((static_cast<unsigned char>(*data) & 0xC0) >> 6)];
- *it++ = key[static_cast<unsigned char>(*data++) & 0x3F];
-
- size -= 3;
- }
- if (size == 1)
- {
- *it++ = key[(static_cast<unsigned char>(*data) & 0xFC) >> 2];
- unsigned char h = (static_cast<unsigned char>(*data++) & 0x03) << 4;
- *it++ = key[h];
- *it++ = '=';
- *it++ = '=';
- }
- else if (size == 2)
- {
- *it++ = key[(static_cast<unsigned char>(*data) & 0xFC) >> 2];
- unsigned char h = (static_cast<unsigned char>(*data++) & 0x03) << 4;
- *it++ = key[h | ((static_cast<unsigned char>(*data) & 0xF0) >> 4)];
- h = (static_cast<unsigned char>(*data++) & 0x0F) << 2;
- *it++ = key[h];
- *it++ = '=';
- }
- return ret;
- }
-
- inline static std::string base64encode(std::string data, size_t size, const char* key = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/")
- {
- return base64encode((const unsigned char*)data.c_str(), size, key);
- }
-
- inline static std::string base64encode_urlsafe(const unsigned char* data, size_t size)
- {
- return base64encode(data, size, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_");
- }
-
- inline static std::string base64encode_urlsafe(std::string data, size_t size)
- {
- return base64encode((const unsigned char*)data.c_str(), size, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_");
- }
-
- inline static std::string base64decode(const char* data, size_t size)
- {
- // We accept both regular and url encoding here, as there does not seem to be any downside to that.
- // If we want to distinguish that we should use +/ for non-url and -_ for url.
-
- // Mapping logic from characters to [0-63]
- auto key = [](char c) -> unsigned char {
- if ((c >= 'A') && (c <= 'Z')) return c - 'A';
- if ((c >= 'a') && (c <= 'z')) return c - 'a' + 26;
- if ((c >= '0') && (c <= '9')) return c - '0' + 52;
- if ((c == '+') || (c == '-')) return 62;
- if ((c == '/') || (c == '_')) return 63;
- return 0;
- };
-
- // Not padded
- if (size % 4 == 2) // missing last 2 characters
- size = (size / 4 * 3) + 1; // Not subtracting extra characters because they're truncated in int division
- else if (size % 4 == 3) // missing last character
- size = (size / 4 * 3) + 2; // Not subtracting extra characters because they're truncated in int division
-
- // Padded
- else if (data[size - 2] == '=') // padded with '=='
- size = (size / 4 * 3) - 2; // == padding means the last block only has 1 character instead of 3, hence the '-2'
- else if (data[size - 1] == '=') // padded with '='
- size = (size / 4 * 3) - 1; // = padding means the last block only has 2 character instead of 3, hence the '-1'
-
- // Padding not needed
- else
- size = size / 4 * 3;
-
- std::string ret;
- ret.resize(size);
- auto it = ret.begin();
-
- // These will be used to decode 1 character at a time
- unsigned char odd; // char1 and char3
- unsigned char even; // char2 and char4
-
- // Take 4 character blocks to turn into 3
- while (size >= 3)
- {
- // dec_char1 = (char1 shifted 2 bits to the left) OR ((char2 AND 00110000) shifted 4 bits to the right))
- odd = key(*data++);
- even = key(*data++);
- *it++ = (odd << 2) | ((even & 0x30) >> 4);
- // dec_char2 = ((char2 AND 00001111) shifted 4 bits left) OR ((char3 AND 00111100) shifted 2 bits right))
- odd = key(*data++);
- *it++ = ((even & 0x0F) << 4) | ((odd & 0x3C) >> 2);
- // dec_char3 = ((char3 AND 00000011) shifted 6 bits left) OR (char4)
- even = key(*data++);
- *it++ = ((odd & 0x03) << 6) | (even);
-
- size -= 3;
- }
- if (size == 2)
- {
- // d_char1 = (char1 shifted 2 bits to the left) OR ((char2 AND 00110000) shifted 4 bits to the right))
- odd = key(*data++);
- even = key(*data++);
- *it++ = (odd << 2) | ((even & 0x30) >> 4);
- // d_char2 = ((char2 AND 00001111) shifted 4 bits left) OR ((char3 AND 00111100) shifted 2 bits right))
- odd = key(*data++);
- *it++ = ((even & 0x0F) << 4) | ((odd & 0x3C) >> 2);
- }
- else if (size == 1)
- {
- // d_char1 = (char1 shifted 2 bits to the left) OR ((char2 AND 00110000) shifted 4 bits to the right))
- odd = key(*data++);
- even = key(*data++);
- *it++ = (odd << 2) | ((even & 0x30) >> 4);
- }
- return ret;
- }
-
- inline static std::string base64decode(const std::string& data, size_t size)
- {
- return base64decode(data.data(), size);
- }
-
- inline static std::string base64decode(const std::string& data)
- {
- return base64decode(data.data(), data.length());
- }
-
- inline static std::string normalize_path(const std::string& directoryPath)
- {
- std::string normalizedPath = directoryPath;
- std::replace(normalizedPath.begin(), normalizedPath.end(), '\\', '/');
- if (!normalizedPath.empty() && normalizedPath.back() != '/')
- normalizedPath += '/';
- return normalizedPath;
- }
-
- inline static void sanitize_filename(std::string& data, char replacement = '_')
- {
- if (data.length() > 255)
- data.resize(255);
-
- static const auto toUpper = [](char c) {
- return ((c >= 'a') && (c <= 'z')) ? (c - ('a' - 'A')) : c;
- };
- // Check for special device names. The Windows behavior is really odd here, it will consider both AUX and AUX.txt
- // a special device. Thus we search for the string (case-insensitive), and then check if the string ends or if
- // is has a dangerous follow up character (.:\/)
- auto sanitizeSpecialFile = [](std::string& source, unsigned ofs, const char* pattern, bool includeNumber, char replacement) {
- unsigned i = ofs;
- size_t len = source.length();
- const char* p = pattern;
- while (*p)
- {
- if (i >= len) return;
- if (toUpper(source[i]) != *p) return;
- ++i;
- ++p;
- }
- if (includeNumber)
- {
- if ((i >= len) || (source[i] < '1') || (source[i] > '9')) return;
- ++i;
- }
- if ((i >= len) || (source[i] == '.') || (source[i] == ':') || (source[i] == '/') || (source[i] == '\\'))
- {
- source.erase(ofs + 1, (i - ofs) - 1);
- source[ofs] = replacement;
- }
- };
- bool checkForSpecialEntries = true;
- for (unsigned i = 0; i < data.length(); ++i)
- {
- // Recognize directory traversals and the special devices CON/PRN/AUX/NULL/COM[1-]/LPT[1-9]
- if (checkForSpecialEntries)
- {
- checkForSpecialEntries = false;
- switch (toUpper(data[i]))
- {
- case 'A':
- sanitizeSpecialFile(data, i, "AUX", false, replacement);
- break;
- case 'C':
- sanitizeSpecialFile(data, i, "CON", false, replacement);
- sanitizeSpecialFile(data, i, "COM", true, replacement);
- break;
- case 'L':
- sanitizeSpecialFile(data, i, "LPT", true, replacement);
- break;
- case 'N':
- sanitizeSpecialFile(data, i, "NUL", false, replacement);
- break;
- case 'P':
- sanitizeSpecialFile(data, i, "PRN", false, replacement);
- break;
- case '.':
- sanitizeSpecialFile(data, i, "..", false, replacement);
- break;
- }
- }
-
- // Sanitize individual characters
- unsigned char c = data[i];
- if ((c < ' ') || ((c >= 0x80) && (c <= 0x9F)) || (c == '?') || (c == '<') || (c == '>') || (c == ':') || (c == '*') || (c == '|') || (c == '\"'))
- {
- data[i] = replacement;
- }
- else if ((c == '/') || (c == '\\'))
- {
- if (CROW_UNLIKELY(i == 0)) //Prevent Unix Absolute Paths (Windows Absolute Paths are prevented with `(c == ':')`)
- {
- data[i] = replacement;
- }
- else
- {
- checkForSpecialEntries = true;
- }
- }
- }
- }
-
- inline static std::string random_alphanum(std::size_t size)
- {
- static const char alphabet[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
- std::random_device dev;
- std::mt19937 rng(dev());
- std::uniform_int_distribution<std::mt19937::result_type> dist(0, sizeof(alphabet) - 2);
- std::string out;
- out.reserve(size);
- for (std::size_t i = 0; i < size; i++)
- out.push_back(alphabet[dist(rng)]);
- return out;
- }
-
- inline static std::string join_path(std::string path, const std::string& fname)
- {
-#if defined(CROW_CAN_USE_CPP17) && !defined(CROW_FILESYSTEM_IS_EXPERIMENTAL)
- return (std::filesystem::path(path) / fname).string();
-#else
- if (!(path.back() == '/' || path.back() == '\\'))
- path += '/';
- path += fname;
- return path;
-#endif
- }
-
- /**
- * @brief Checks two string for equality.
- * Always returns false if strings differ in size.
- * Defaults to case-insensitive comparison.
- */
- inline static bool string_equals(const std::string& l, const std::string& r, bool case_sensitive = false)
- {
- if (l.length() != r.length())
- return false;
-
- for (size_t i = 0; i < l.length(); i++)
- {
- if (case_sensitive)
- {
- if (l[i] != r[i])
- return false;
- }
- else
- {
- if (std::toupper(l[i]) != std::toupper(r[i]))
- return false;
- }
- }
-
- return true;
- }
-
- template<typename T, typename U>
- inline static T lexical_cast(const U& v)
- {
- std::stringstream stream;
- T res;
-
- stream << v;
- stream >> res;
-
- return res;
- }
-
- template<typename T>
- inline static T lexical_cast(const char* v, size_t count)
- {
- std::stringstream stream;
- T res;
-
- stream.write(v, count);
- stream >> res;
-
- return res;
- }
-
-
- /// Return a copy of the given string with its
- /// leading and trailing whitespaces removed.
- inline static std::string trim(const std::string& v)
- {
- if (v.empty())
- return "";
-
- size_t begin = 0, end = v.length();
-
- size_t i;
- for (i = 0; i < v.length(); i++)
- {
- if (!std::isspace(v[i]))
- {
- begin = i;
- break;
- }
- }
-
- if (i == v.length())
- return "";
-
- for (i = v.length(); i > 0; i--)
- {
- if (!std::isspace(v[i - 1]))
- {
- end = i;
- break;
- }
- }
-
- return v.substr(begin, end - begin);
- }
- } // namespace utility
-} // namespace crow
-
-
-#include <locale>
-#include <unordered_map>
-
-namespace crow
-{
- /// Hashing function for ci_map (unordered_multimap).
- struct ci_hash
- {
- size_t operator()(const std::string& key) const
- {
- std::size_t seed = 0;
- std::locale locale;
-
- for (auto c : key)
- hash_combine(seed, std::toupper(c, locale));
-
- return seed;
- }
-
- private:
- static inline void hash_combine(std::size_t& seed, char v)
- {
- std::hash<char> hasher;
- seed ^= hasher(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
- }
- };
-
- /// Equals function for ci_map (unordered_multimap).
- struct ci_key_eq
- {
- bool operator()(const std::string& l, const std::string& r) const
- {
- return utility::string_equals(l, r);
- }
- };
-
- using ci_map = std::unordered_multimap<std::string, std::string, ci_hash, ci_key_eq>;
-} // namespace crow
-
-
-#include <vector>
-#include <string>
-#include <stdexcept>
-#include <iostream>
-
-namespace crow
-{
- const char cr = '\r';
- const char lf = '\n';
- const std::string crlf("\r\n");
-
- enum class HTTPMethod : char
- {
-#ifndef DELETE
- DELETE = 0,
- GET,
- HEAD,
- POST,
- PUT,
-
- CONNECT,
- OPTIONS,
- TRACE,
-
- PATCH,
- PURGE,
-
- COPY,
- LOCK,
- MKCOL,
- MOVE,
- PROPFIND,
- PROPPATCH,
- SEARCH,
- UNLOCK,
- BIND,
- REBIND,
- UNBIND,
- ACL,
-
- REPORT,
- MKACTIVITY,
- CHECKOUT,
- MERGE,
-
- MSEARCH,
- NOTIFY,
- SUBSCRIBE,
- UNSUBSCRIBE,
-
- MKCALENDAR,
-
- LINK,
- UNLINK,
-
- SOURCE,
-#endif
-
- Delete = 0,
- Get,
- Head,
- Post,
- Put,
-
- Connect,
- Options,
- Trace,
-
- Patch,
- Purge,
-
- Copy,
- Lock,
- MkCol,
- Move,
- Propfind,
- Proppatch,
- Search,
- Unlock,
- Bind,
- Rebind,
- Unbind,
- Acl,
-
- Report,
- MkActivity,
- Checkout,
- Merge,
-
- MSearch,
- Notify,
- Subscribe,
- Unsubscribe,
-
- MkCalendar,
-
- Link,
- Unlink,
-
- Source,
-
-
- InternalMethodCount,
- // should not add an item below this line: used for array count
- };
-
- constexpr const char* method_strings[] =
- {
- "DELETE",
- "GET",
- "HEAD",
- "POST",
- "PUT",
-
- "CONNECT",
- "OPTIONS",
- "TRACE",
-
- "PATCH",
- "PURGE",
-
- "COPY",
- "LOCK",
- "MKCOL",
- "MOVE",
- "PROPFIND",
- "PROPPATCH",
- "SEARCH",
- "UNLOCK",
- "BIND",
- "REBIND",
- "UNBIND",
- "ACL",
-
- "REPORT",
- "MKACTIVITY",
- "CHECKOUT",
- "MERGE",
-
- "M-SEARCH",
- "NOTIFY",
- "SUBSCRIBE",
- "UNSUBSCRIBE",
-
- "MKCALENDAR",
-
- "LINK",
- "UNLINK",
-
- "SOURCE"};
-
-
- inline std::string method_name(HTTPMethod method)
- {
- if (CROW_LIKELY(method < HTTPMethod::InternalMethodCount))
- {
- return method_strings[(unsigned char)method];
- }
- return "invalid";
- }
-
- // clang-format off
-
- enum status
- {
- CONTINUE = 100,
- SWITCHING_PROTOCOLS = 101,
-
- OK = 200,
- CREATED = 201,
- ACCEPTED = 202,
- NON_AUTHORITATIVE_INFORMATION = 203,
- NO_CONTENT = 204,
- RESET_CONTENT = 205,
- PARTIAL_CONTENT = 206,
-
- MULTIPLE_CHOICES = 300,
- MOVED_PERMANENTLY = 301,
- FOUND = 302,
- SEE_OTHER = 303,
- NOT_MODIFIED = 304,
- TEMPORARY_REDIRECT = 307,
- PERMANENT_REDIRECT = 308,
-
- BAD_REQUEST = 400,
- UNAUTHORIZED = 401,
- FORBIDDEN = 403,
- NOT_FOUND = 404,
- METHOD_NOT_ALLOWED = 405,
- NOT_ACCEPTABLE = 406,
- PROXY_AUTHENTICATION_REQUIRED = 407,
- CONFLICT = 409,
- GONE = 410,
- PAYLOAD_TOO_LARGE = 413,
- UNSUPPORTED_MEDIA_TYPE = 415,
- RANGE_NOT_SATISFIABLE = 416,
- EXPECTATION_FAILED = 417,
- PRECONDITION_REQUIRED = 428,
- TOO_MANY_REQUESTS = 429,
- UNAVAILABLE_FOR_LEGAL_REASONS = 451,
-
- INTERNAL_SERVER_ERROR = 500,
- NOT_IMPLEMENTED = 501,
- BAD_GATEWAY = 502,
- SERVICE_UNAVAILABLE = 503,
- GATEWAY_TIMEOUT = 504,
- VARIANT_ALSO_NEGOTIATES = 506
- };
-
- // clang-format on
-
- enum class ParamType : char
- {
- INT,
- UINT,
- DOUBLE,
- STRING,
- PATH,
-
- MAX
- };
-
- /// @cond SKIP
- struct routing_params
- {
- std::vector<int64_t> int_params;
- std::vector<uint64_t> uint_params;
- std::vector<double> double_params;
- std::vector<std::string> string_params;
-
- void debug_print() const
- {
- std::cerr << "routing_params" << std::endl;
- for (auto i : int_params)
- std::cerr << i << ", ";
- std::cerr << std::endl;
- for (auto i : uint_params)
- std::cerr << i << ", ";
- std::cerr << std::endl;
- for (auto i : double_params)
- std::cerr << i << ", ";
- std::cerr << std::endl;
- for (auto& i : string_params)
- std::cerr << i << ", ";
- std::cerr << std::endl;
- }
-
- template<typename T>
- T get(unsigned) const;
- };
-
- template<>
- inline int64_t routing_params::get<int64_t>(unsigned index) const
- {
- return int_params[index];
- }
-
- template<>
- inline uint64_t routing_params::get<uint64_t>(unsigned index) const
- {
- return uint_params[index];
- }
-
- template<>
- inline double routing_params::get<double>(unsigned index) const
- {
- return double_params[index];
- }
-
- template<>
- inline std::string routing_params::get<std::string>(unsigned index) const
- {
- return string_params[index];
- }
- /// @endcond
-
- struct routing_handle_result
- {
- uint16_t rule_index;
- std::vector<uint16_t> blueprint_indices;
- routing_params r_params;
- HTTPMethod method;
-
- routing_handle_result() {}
-
- routing_handle_result(uint16_t rule_index_, std::vector<uint16_t> blueprint_indices_, routing_params r_params_):
- rule_index(rule_index_),
- blueprint_indices(blueprint_indices_),
- r_params(r_params_) {}
-
- routing_handle_result(uint16_t rule_index_, std::vector<uint16_t> blueprint_indices_, routing_params r_params_, HTTPMethod method_):
- rule_index(rule_index_),
- blueprint_indices(blueprint_indices_),
- r_params(r_params_),
- method(method_) {}
- };
-} // namespace crow
-
-// clang-format off
-#ifndef CROW_MSVC_WORKAROUND
-constexpr crow::HTTPMethod method_from_string(const char* str)
-{
- return crow::black_magic::is_equ_p(str, "GET", 3) ? crow::HTTPMethod::Get :
- crow::black_magic::is_equ_p(str, "DELETE", 6) ? crow::HTTPMethod::Delete :
- crow::black_magic::is_equ_p(str, "HEAD", 4) ? crow::HTTPMethod::Head :
- crow::black_magic::is_equ_p(str, "POST", 4) ? crow::HTTPMethod::Post :
- crow::black_magic::is_equ_p(str, "PUT", 3) ? crow::HTTPMethod::Put :
-
- crow::black_magic::is_equ_p(str, "OPTIONS", 7) ? crow::HTTPMethod::Options :
- crow::black_magic::is_equ_p(str, "CONNECT", 7) ? crow::HTTPMethod::Connect :
- crow::black_magic::is_equ_p(str, "TRACE", 5) ? crow::HTTPMethod::Trace :
-
- crow::black_magic::is_equ_p(str, "PATCH", 5) ? crow::HTTPMethod::Patch :
- crow::black_magic::is_equ_p(str, "PURGE", 5) ? crow::HTTPMethod::Purge :
- crow::black_magic::is_equ_p(str, "COPY", 4) ? crow::HTTPMethod::Copy :
- crow::black_magic::is_equ_p(str, "LOCK", 4) ? crow::HTTPMethod::Lock :
- crow::black_magic::is_equ_p(str, "MKCOL", 5) ? crow::HTTPMethod::MkCol :
- crow::black_magic::is_equ_p(str, "MOVE", 4) ? crow::HTTPMethod::Move :
- crow::black_magic::is_equ_p(str, "PROPFIND", 8) ? crow::HTTPMethod::Propfind :
- crow::black_magic::is_equ_p(str, "PROPPATCH", 9) ? crow::HTTPMethod::Proppatch :
- crow::black_magic::is_equ_p(str, "SEARCH", 6) ? crow::HTTPMethod::Search :
- crow::black_magic::is_equ_p(str, "UNLOCK", 6) ? crow::HTTPMethod::Unlock :
- crow::black_magic::is_equ_p(str, "BIND", 4) ? crow::HTTPMethod::Bind :
- crow::black_magic::is_equ_p(str, "REBIND", 6) ? crow::HTTPMethod::Rebind :
- crow::black_magic::is_equ_p(str, "UNBIND", 6) ? crow::HTTPMethod::Unbind :
- crow::black_magic::is_equ_p(str, "ACL", 3) ? crow::HTTPMethod::Acl :
-
- crow::black_magic::is_equ_p(str, "REPORT", 6) ? crow::HTTPMethod::Report :
- crow::black_magic::is_equ_p(str, "MKACTIVITY", 10) ? crow::HTTPMethod::MkActivity :
- crow::black_magic::is_equ_p(str, "CHECKOUT", 8) ? crow::HTTPMethod::Checkout :
- crow::black_magic::is_equ_p(str, "MERGE", 5) ? crow::HTTPMethod::Merge :
-
- crow::black_magic::is_equ_p(str, "MSEARCH", 7) ? crow::HTTPMethod::MSearch :
- crow::black_magic::is_equ_p(str, "NOTIFY", 6) ? crow::HTTPMethod::Notify :
- crow::black_magic::is_equ_p(str, "SUBSCRIBE", 9) ? crow::HTTPMethod::Subscribe :
- crow::black_magic::is_equ_p(str, "UNSUBSCRIBE", 11) ? crow::HTTPMethod::Unsubscribe :
-
- crow::black_magic::is_equ_p(str, "MKCALENDAR", 10) ? crow::HTTPMethod::MkCalendar :
-
- crow::black_magic::is_equ_p(str, "LINK", 4) ? crow::HTTPMethod::Link :
- crow::black_magic::is_equ_p(str, "UNLINK", 6) ? crow::HTTPMethod::Unlink :
-
- crow::black_magic::is_equ_p(str, "SOURCE", 6) ? crow::HTTPMethod::Source :
- throw std::runtime_error("invalid http method");
-}
-
-constexpr crow::HTTPMethod operator"" _method(const char* str, size_t /*len*/)
-{
- return method_from_string( str );
-}
-#endif
-// clang-format on
-
-
-#ifdef CROW_USE_BOOST
-#include <boost/asio.hpp>
-#else
-#ifndef ASIO_STANDALONE
-#define ASIO_STANDALONE
-#endif
-#include <asio.hpp>
-#endif
-
-
-namespace crow // NOTE: Already documented in "crow/app.h"
-{
-#ifdef CROW_USE_BOOST
- namespace asio = boost::asio;
-#endif
-
- /// Find and return the value associated with the key. (returns an empty string if nothing is found)
- template<typename T>
- inline const std::string& get_header_value(const T& headers, const std::string& key)
- {
- if (headers.count(key))
- {
- return headers.find(key)->second;
- }
- static std::string empty;
- return empty;
- }
-
- /// An HTTP request.
- struct request
- {
- HTTPMethod method;
- std::string raw_url; ///< The full URL containing the `?` and URL parameters.
- std::string url; ///< The endpoint without any parameters.
- query_string url_params; ///< The parameters associated with the request. (everything after the `?` in the URL)
- ci_map headers;
- std::string body;
- std::string remote_ip_address; ///< The IP address from which the request was sent.
- unsigned char http_ver_major, http_ver_minor;
- bool keep_alive, ///< Whether or not the server should send a `connection: Keep-Alive` header to the client.
- close_connection, ///< Whether or not the server should shut down the TCP connection once a response is sent.
- upgrade; ///< Whether or noth the server should change the HTTP connection to a different connection.
-
- void* middleware_context{};
- void* middleware_container{};
- asio::io_service* io_service{};
-
- /// Construct an empty request. (sets the method to `GET`)
- request():
- method(HTTPMethod::Get)
- {}
-
- /// Construct a request with all values assigned.
- request(HTTPMethod method, std::string raw_url, std::string url, query_string url_params, ci_map headers, std::string body, unsigned char http_major, unsigned char http_minor, bool has_keep_alive, bool has_close_connection, bool is_upgrade):
- method(method), raw_url(std::move(raw_url)), url(std::move(url)), url_params(std::move(url_params)), headers(std::move(headers)), body(std::move(body)), http_ver_major(http_major), http_ver_minor(http_minor), keep_alive(has_keep_alive), close_connection(has_close_connection), upgrade(is_upgrade)
- {}
-
- void add_header(std::string key, std::string value)
- {
- headers.emplace(std::move(key), std::move(value));
- }
-
- const std::string& get_header_value(const std::string& key) const
- {
- return crow::get_header_value(headers, key);
- }
-
- bool check_version(unsigned char major, unsigned char minor) const
- {
- return http_ver_major == major && http_ver_minor == minor;
- }
-
- /// Get the body as parameters in QS format.
-
- ///
- /// This is meant to be used with requests of type "application/x-www-form-urlencoded"
- const query_string get_body_params() const
- {
- return query_string(body, false);
- }
-
- /// Send data to whoever made this request with a completion handler and return immediately.
- template<typename CompletionHandler>
- void post(CompletionHandler handler)
- {
- io_service->post(handler);
- }
-
- /// Send data to whoever made this request with a completion handler.
- template<typename CompletionHandler>
- void dispatch(CompletionHandler handler)
- {
- io_service->dispatch(handler);
- }
- };
-} // namespace crow
-
-
-#include <string>
-#include <vector>
-#include <sstream>
-
-
-namespace crow
-{
-
- /// Encapsulates anything related to processing and organizing `multipart/xyz` messages
- namespace multipart
- {
-
- const std::string dd = "--";
-
- /// The first part in a section, contains metadata about the part
- struct header
- {
- std::string value; ///< The first part of the header, usually `Content-Type` or `Content-Disposition`
- std::unordered_map<std::string, std::string> params; ///< The parameters of the header, come after the `value`
-
- operator int() const { return std::stoi(value); } ///< Returns \ref value as integer
- operator double() const { return std::stod(value); } ///< Returns \ref value as double
- };
-
- /// Multipart header map (key is header key).
- using mph_map = std::unordered_multimap<std::string, header, ci_hash, ci_key_eq>;
-
- /// Find and return the value object associated with the key. (returns an empty class if nothing is found)
- template<typename O, typename T>
- inline const O& get_header_value_object(const T& headers, const std::string& key)
- {
- if (headers.count(key))
- {
- return headers.find(key)->second;
- }
- static O empty;
- return empty;
- }
-
- /// Same as \ref get_header_value_object() but for \ref multipart.header
- template<typename T>
- inline const header& get_header_object(const T& headers, const std::string& key)
- {
- return get_header_value_object<header>(headers, key);
- }
-
- ///One part of the multipart message
-
- ///
- /// It is usually separated from other sections by a `boundary`
- struct part
- {
- mph_map headers; ///< (optional) The first part before the data, Contains information regarding the type of data and encoding
- std::string body; ///< The actual data in the part
-
- operator int() const { return std::stoi(body); } ///< Returns \ref body as integer
- operator double() const { return std::stod(body); } ///< Returns \ref body as double
-
- const header& get_header_object(const std::string& key) const
- {
- return multipart::get_header_object(headers, key);
- }
- };
-
- /// Multipart map (key is the name parameter).
- using mp_map = std::unordered_multimap<std::string, part, ci_hash, ci_key_eq>;
-
- /// The parsed multipart request/response
- struct message : public returnable
- {
- ci_map headers; ///< The request/response headers
- std::string boundary; ///< The text boundary that separates different `parts`
- std::vector<part> parts; ///< The individual parts of the message
- mp_map part_map; ///< The individual parts of the message, organized in a map with the `name` header parameter being the key
-
- const std::string& get_header_value(const std::string& key) const
- {
- return crow::get_header_value(headers, key);
- }
-
- part get_part_by_name(const std::string& name)
- {
- mp_map::iterator result = part_map.find(name);
- if (result != part_map.end())
- return result->second;
- else
- return {};
- }
-
- /// Represent all parts as a string (**does not include message headers**)
- std::string dump() const override
- {
- std::stringstream str;
- std::string delimiter = dd + boundary;
-
- for (unsigned i = 0; i < parts.size(); i++)
- {
- str << delimiter << crlf;
- str << dump(i);
- }
- str << delimiter << dd << crlf;
- return str.str();
- }
-
- /// Represent an individual part as a string
- std::string dump(int part_) const
- {
- std::stringstream str;
- part item = parts[part_];
- for (auto& item_h : item.headers)
- {
- str << item_h.first << ": " << item_h.second.value;
- for (auto& it : item_h.second.params)
- {
- str << "; " << it.first << '=' << pad(it.second);
- }
- str << crlf;
- }
- str << crlf;
- str << item.body << crlf;
- return str.str();
- }
-
- /// Default constructor using default values
- message(const ci_map& headers, const std::string& boundary, const std::vector<part>& sections):
- returnable("multipart/form-data; boundary=CROW-BOUNDARY"), headers(headers), boundary(boundary), parts(sections)
- {
- if (!boundary.empty())
- content_type = "multipart/form-data; boundary=" + boundary;
- for (auto& item : parts)
- {
- part_map.emplace(
- (get_header_object(item.headers, "Content-Disposition").params.find("name")->second),
- item);
- }
- }
-
- /// Create a multipart message from a request data
- message(const request& req):
- returnable("multipart/form-data; boundary=CROW-BOUNDARY"),
- headers(req.headers),
- boundary(get_boundary(get_header_value("Content-Type")))
- {
- if (!boundary.empty())
- content_type = "multipart/form-data; boundary=" + boundary;
- parse_body(req.body, parts, part_map);
- }
-
- private:
- std::string get_boundary(const std::string& header) const
- {
- constexpr char boundary_text[] = "boundary=";
- size_t found = header.find(boundary_text);
- if (found != std::string::npos)
- {
- std::string to_return(header.substr(found + strlen(boundary_text)));
- if (to_return[0] == '\"')
- {
- to_return = to_return.substr(1, to_return.length() - 2);
- }
- return to_return;
- }
- return std::string();
- }
-
- void parse_body(std::string body, std::vector<part>& sections, mp_map& part_map)
- {
-
- std::string delimiter = dd + boundary;
-
- // TODO(EDev): Exit on error
- while (body != (crlf))
- {
- size_t found = body.find(delimiter);
- if (found == std::string::npos)
- {
- // did not find delimiter; probably an ill-formed body; ignore the rest
- break;
- }
- std::string section = body.substr(0, found);
-
- // +2 is the CRLF.
- // We don't check it and delete it so that the same delimiter can be used for The last delimiter (--delimiter--CRLF).
- body.erase(0, found + delimiter.length() + 2);
- if (!section.empty())
- {
- part parsed_section(parse_section(section));
- part_map.emplace(
- (get_header_object(parsed_section.headers, "Content-Disposition").params.find("name")->second),
- parsed_section);
- sections.push_back(std::move(parsed_section));
- }
- }
- }
-
- part parse_section(std::string& section)
- {
- struct part to_return;
-
- size_t found = section.find(crlf + crlf);
- std::string head_line = section.substr(0, found + 2);
- section.erase(0, found + 4);
-
- parse_section_head(head_line, to_return);
- to_return.body = section.substr(0, section.length() - 2);
- return to_return;
- }
-
- void parse_section_head(std::string& lines, part& part)
- {
- while (!lines.empty())
- {
- header to_add;
-
- size_t found = lines.find(crlf);
- std::string line = lines.substr(0, found);
- std::string key;
- lines.erase(0, found + 2);
- // Add the header if available
- if (!line.empty())
- {
- size_t found = line.find("; ");
- std::string header = line.substr(0, found);
- if (found != std::string::npos)
- line.erase(0, found + 2);
- else
- line = std::string();
-
- size_t header_split = header.find(": ");
- key = header.substr(0, header_split);
-
- to_add.value = header.substr(header_split + 2);
- }
-
- // Add the parameters
- while (!line.empty())
- {
- size_t found = line.find("; ");
- std::string param = line.substr(0, found);
- if (found != std::string::npos)
- line.erase(0, found + 2);
- else
- line = std::string();
-
- size_t param_split = param.find('=');
-
- std::string value = param.substr(param_split + 1);
-
- to_add.params.emplace(param.substr(0, param_split), trim(value));
- }
- part.headers.emplace(key, to_add);
- }
- }
-
- inline std::string trim(std::string& string, const char& excess = '"') const
- {
- if (string.length() > 1 && string[0] == excess && string[string.length() - 1] == excess)
- return string.substr(1, string.length() - 2);
- return string;
- }
-
- inline std::string pad(std::string& string, const char& padding = '"') const
- {
- return (padding + string + padding);
- }
- };
- } // namespace multipart
-} // namespace crow
-
-/* merged revision: 5b951d74bd66ec9d38448e0a85b1cf8b85d97db3 */
-/* updated to : e13b274770da9b82a1085dec29182acfea72e7a7 (beyond v2.9.5) */
-/* commits not included:
- * 091ebb87783a58b249062540bbea07de2a11e9cf
- * 6132d1fefa03f769a3979355d1f5da0b8889cad2
- * 7ba312397c2a6c851a4b5efe6c1603b1e1bda6ff
- * d7675453a6c03180572f084e95eea0d02df39164
- * dff604db203986e532e5a679bafd0e7382c6bdd9 (Might be useful to actually add [upgrade requests with a body])
- * e01811e7f4894d7f0f7f4bd8492cccec6f6b4038 (related to above)
- * 05525c5fde1fc562481f6ae08fa7056185325daf (also related to above)
- * 350258965909f249f9c59823aac240313e0d0120 (cannot be implemented due to upgrade)
- */
-
-// clang-format off
-extern "C" {
-#include <stddef.h>
-#if defined(_WIN32) && !defined(__MINGW32__) && \
- (!defined(_MSC_VER) || _MSC_VER<1600) && !defined(__WINE__)
-#include <BaseTsd.h>
-typedef __int8 int8_t;
-typedef unsigned __int8 uint8_t;
-typedef __int16 int16_t;
-typedef unsigned __int16 uint16_t;
-typedef __int32 int32_t;
-typedef unsigned __int32 uint32_t;
-typedef __int64 int64_t;
-typedef unsigned __int64 uint64_t;
-#elif (defined(__sun) || defined(__sun__)) && defined(__SunOS_5_9)
-#include <sys/inttypes.h>
-#else
-#include <stdint.h>
-#endif
-#include <assert.h>
-#include <ctype.h>
-#include <string.h>
-#include <limits.h>
-}
-
-namespace crow
-{
-/* Maximium header size allowed. If the macro is not defined
- * before including this header then the default is used. To
- * change the maximum header size, define the macro in the build
- * environment (e.g. -DHTTP_MAX_HEADER_SIZE=<value>). To remove
- * the effective limit on the size of the header, define the macro
- * to a very large number (e.g. -DCROW_HTTP_MAX_HEADER_SIZE=0x7fffffff)
- */
-#ifndef CROW_HTTP_MAX_HEADER_SIZE
-# define CROW_HTTP_MAX_HEADER_SIZE (80*1024)
-#endif
-
-typedef struct http_parser http_parser;
-typedef struct http_parser_settings http_parser_settings;
-
-/* Callbacks should return non-zero to indicate an error. The parser will
- * then halt execution.
- *
- * The one exception is on_headers_complete. In a HTTP_RESPONSE parser
- * returning '1' from on_headers_complete will tell the parser that it
- * should not expect a body. This is used when receiving a response to a
- * HEAD request which may contain 'Content-Length' or 'Transfer-Encoding:
- * chunked' headers that indicate the presence of a body.
- *
- * Returning `2` from on_headers_complete will tell parser that it should not
- * expect neither a body nor any futher responses on this connection. This is
- * useful for handling responses to a CONNECT request which may not contain
- * `Upgrade` or `Connection: upgrade` headers.
- *
- * http_data_cb does not return data chunks. It will be called arbitrarally
- * many times for each string. E.G. you might get 10 callbacks for "on_url"
- * each providing just a few characters more data.
- */
-typedef int (*http_data_cb) (http_parser*, const char *at, size_t length);
-typedef int (*http_cb) (http_parser*);
-
-
-/* Flag values for http_parser.flags field */
-enum http_connection_flags // This is basically 7 booleans placed into 1 integer. Uses 4 bytes instead of n bytes (7 currently).
- { F_CHUNKED = 1 << 0 // 00000000 00000000 00000000 00000001
- , F_CONNECTION_KEEP_ALIVE = 1 << 1 // 00000000 00000000 00000000 00000010
- , F_CONNECTION_CLOSE = 1 << 2 // 00000000 00000000 00000000 00000100
- , F_TRAILING = 1 << 3 // 00000000 00000000 00000000 00001000
- , F_UPGRADE = 1 << 4 // 00000000 00000000 00000000 00010000
- , F_SKIPBODY = 1 << 5 // 00000000 00000000 00000000 00100000
- , F_CONTENTLENGTH = 1 << 6 // 00000000 00000000 00000000 01000000
- };
-
-
-/* Map for errno-related constants
- *
- * The provided argument should be a macro that takes 2 arguments.
- */
-#define CROW_HTTP_ERRNO_MAP(CROW_XX) \
- /* No error */ \
- CROW_XX(OK, "success") \
- \
- /* Callback-related errors */ \
- CROW_XX(CB_message_begin, "the on_message_begin callback failed") \
- CROW_XX(CB_method, "the on_method callback failed") \
- CROW_XX(CB_url, "the \"on_url\" callback failed") \
- CROW_XX(CB_header_field, "the \"on_header_field\" callback failed") \
- CROW_XX(CB_header_value, "the \"on_header_value\" callback failed") \
- CROW_XX(CB_headers_complete, "the \"on_headers_complete\" callback failed") \
- CROW_XX(CB_body, "the \"on_body\" callback failed") \
- CROW_XX(CB_message_complete, "the \"on_message_complete\" callback failed") \
- CROW_XX(CB_status, "the \"on_status\" callback failed") \
- \
- /* Parsing-related errors */ \
- CROW_XX(INVALID_EOF_STATE, "stream ended at an unexpected time") \
- CROW_XX(HEADER_OVERFLOW, "too many header bytes seen; overflow detected") \
- CROW_XX(CLOSED_CONNECTION, "data received after completed connection: close message") \
- CROW_XX(INVALID_VERSION, "invalid HTTP version") \
- CROW_XX(INVALID_STATUS, "invalid HTTP status code") \
- CROW_XX(INVALID_METHOD, "invalid HTTP method") \
- CROW_XX(INVALID_URL, "invalid URL") \
- CROW_XX(INVALID_HOST, "invalid host") \
- CROW_XX(INVALID_PORT, "invalid port") \
- CROW_XX(INVALID_PATH, "invalid path") \
- CROW_XX(INVALID_QUERY_STRING, "invalid query string") \
- CROW_XX(INVALID_FRAGMENT, "invalid fragment") \
- CROW_XX(LF_EXPECTED, "LF character expected") \
- CROW_XX(INVALID_HEADER_TOKEN, "invalid character in header") \
- CROW_XX(INVALID_CONTENT_LENGTH, "invalid character in content-length header") \
- CROW_XX(UNEXPECTED_CONTENT_LENGTH, "unexpected content-length header") \
- CROW_XX(INVALID_CHUNK_SIZE, "invalid character in chunk size header") \
- CROW_XX(INVALID_CONSTANT, "invalid constant string") \
- CROW_XX(INVALID_INTERNAL_STATE, "encountered unexpected internal state") \
- CROW_XX(STRICT, "strict mode assertion failed") \
- CROW_XX(UNKNOWN, "an unknown error occurred") \
- CROW_XX(INVALID_TRANSFER_ENCODING, "request has invalid transfer-encoding") \
-
-
-/* Define CHPE_* values for each errno value above */
-#define CROW_HTTP_ERRNO_GEN(n, s) CHPE_##n,
-enum http_errno {
- CROW_HTTP_ERRNO_MAP(CROW_HTTP_ERRNO_GEN)
-};
-#undef CROW_HTTP_ERRNO_GEN
-
-
-/* Get an http_errno value from an http_parser */
-#define CROW_HTTP_PARSER_ERRNO(p) ((enum http_errno)(p)->http_errno)
-
-
- struct http_parser
- {
- /** PRIVATE **/
- unsigned int flags : 7; /* F_* values from 'flags' enum; semi-public */
- unsigned int state : 8; /* enum state from http_parser.c */
- unsigned int header_state : 7; /* enum header_state from http_parser.c */
- unsigned int index : 5; /* index into current matcher */
- unsigned int uses_transfer_encoding : 1; /* Transfer-Encoding header is present */
- unsigned int allow_chunked_length : 1; /* Allow headers with both `Content-Length` and `Transfer-Encoding: chunked` set */
- unsigned int lenient_http_headers : 1;
-
- uint32_t nread; /* # bytes read in various scenarios */
- uint64_t content_length; /* # bytes in body. `(uint64_t) -1` (all bits one) if no Content-Length header. */
- unsigned long qs_point;
-
- /** READ-ONLY **/
- unsigned char http_major;
- unsigned char http_minor;
- unsigned int method : 8; /* requests only */
- unsigned int http_errno : 7;
-
- /* 1 = Upgrade header was present and the parser has exited because of that.
- * 0 = No upgrade header present.
- * Should be checked when http_parser_execute() returns in addition to
- * error checking.
- */
- unsigned int upgrade : 1;
-
- /** PUBLIC **/
- void* data; /* A pointer to get hook to the "connection" or "socket" object */
- };
-
-
- struct http_parser_settings
- {
- http_cb on_message_begin;
- http_cb on_method;
- http_data_cb on_url;
- http_data_cb on_header_field;
- http_data_cb on_header_value;
- http_cb on_headers_complete;
- http_data_cb on_body;
- http_cb on_message_complete;
- };
-
-
-
-// SOURCE (.c) CODE
-static uint32_t max_header_size = CROW_HTTP_MAX_HEADER_SIZE;
-
-#ifndef CROW_ULLONG_MAX
-# define CROW_ULLONG_MAX ((uint64_t) -1) /* 2^64-1 */
-#endif
-
-#ifndef CROW_MIN
-# define CROW_MIN(a,b) ((a) < (b) ? (a) : (b))
-#endif
-
-#ifndef CROW_ARRAY_SIZE
-# define CROW_ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
-#endif
-
-#ifndef CROW_BIT_AT
-# define CROW_BIT_AT(a, i) \
- (!!((unsigned int) (a)[(unsigned int) (i) >> 3] & \
- (1 << ((unsigned int) (i) & 7))))
-#endif
-
-#define CROW_SET_ERRNO(e) \
-do { \
- parser->nread = nread; \
- parser->http_errno = (e); \
-} while(0)
-
-/* Run the notify callback FOR, returning ER if it fails */
-#define CROW_CALLBACK_NOTIFY_(FOR, ER) \
-do { \
- assert(CROW_HTTP_PARSER_ERRNO(parser) == CHPE_OK); \
- \
- if (CROW_LIKELY(settings->on_##FOR)) { \
- if (CROW_UNLIKELY(0 != settings->on_##FOR(parser))) { \
- CROW_SET_ERRNO(CHPE_CB_##FOR); \
- } \
- \
- /* We either errored above or got paused; get out */ \
- if (CROW_UNLIKELY(CROW_HTTP_PARSER_ERRNO(parser) != CHPE_OK)) { \
- return (ER); \
- } \
- } \
-} while (0)
-
-/* Run the notify callback FOR and consume the current byte */
-#define CROW_CALLBACK_NOTIFY(FOR) CROW_CALLBACK_NOTIFY_(FOR, p - data + 1)
-
-/* Run the notify callback FOR and don't consume the current byte */
-#define CROW_CALLBACK_NOTIFY_NOADVANCE(FOR) CROW_CALLBACK_NOTIFY_(FOR, p - data)
-
-/* Run data callback FOR with LEN bytes, returning ER if it fails */
-#define CROW_CALLBACK_DATA_(FOR, LEN, ER) \
-do { \
- assert(CROW_HTTP_PARSER_ERRNO(parser) == CHPE_OK); \
- \
- if (FOR##_mark) { \
- if (CROW_LIKELY(settings->on_##FOR)) { \
- if (CROW_UNLIKELY(0 != \
- settings->on_##FOR(parser, FOR##_mark, (LEN)))) { \
- CROW_SET_ERRNO(CHPE_CB_##FOR); \
- } \
- \
- /* We either errored above or got paused; get out */ \
- if (CROW_UNLIKELY(CROW_HTTP_PARSER_ERRNO(parser) != CHPE_OK)) {\
- return (ER); \
- } \
- } \
- FOR##_mark = NULL; \
- } \
-} while (0)
-
-/* Run the data callback FOR and consume the current byte */
-#define CROW_CALLBACK_DATA(FOR) \
- CROW_CALLBACK_DATA_(FOR, p - FOR##_mark, p - data + 1)
-
-/* Run the data callback FOR and don't consume the current byte */
-#define CROW_CALLBACK_DATA_NOADVANCE(FOR) \
- CROW_CALLBACK_DATA_(FOR, p - FOR##_mark, p - data)
-
-/* Set the mark FOR; non-destructive if mark is already set */
-#define CROW_MARK(FOR) \
-do { \
- if (!FOR##_mark) { \
- FOR##_mark = p; \
- } \
-} while (0)
-
-/* Don't allow the total size of the HTTP headers (including the status
- * line) to exceed max_header_size. This check is here to protect
- * embedders against denial-of-service attacks where the attacker feeds
- * us a never-ending header that the embedder keeps buffering.
- *
- * This check is arguably the responsibility of embedders but we're doing
- * it on the embedder's behalf because most won't bother and this way we
- * make the web a little safer. max_header_size is still far bigger
- * than any reasonable request or response so this should never affect
- * day-to-day operation.
- */
-#define CROW_COUNT_HEADER_SIZE(V) \
-do { \
- nread += (uint32_t)(V); \
- if (CROW_UNLIKELY(nread > max_header_size)) { \
- CROW_SET_ERRNO(CHPE_HEADER_OVERFLOW); \
- goto error; \
- } \
-} while (0)
-#define CROW_REEXECUTE() \
- goto reexecute; \
-
-#define CROW_PROXY_CONNECTION "proxy-connection"
-#define CROW_CONNECTION "connection"
-#define CROW_CONTENT_LENGTH "content-length"
-#define CROW_TRANSFER_ENCODING "transfer-encoding"
-#define CROW_UPGRADE "upgrade"
-#define CROW_CHUNKED "chunked"
-#define CROW_KEEP_ALIVE "keep-alive"
-#define CROW_CLOSE "close"
-
-
-
- enum state
- {
- s_dead = 1 /* important that this is > 0 */
-
- ,
- s_start_req
-
- ,
- s_req_method,
- s_req_spaces_before_url,
- s_req_schema,
- s_req_schema_slash,
- s_req_schema_slash_slash,
- s_req_server_start,
- s_req_server, // }
- s_req_server_with_at, // |
- s_req_path, // | The parser recognizes how to switch between these states,
- s_req_query_string_start, // | however it doesn't process them any differently.
- s_req_query_string, // }
- s_req_http_start,
- s_req_http_H,
- s_req_http_HT,
- s_req_http_HTT,
- s_req_http_HTTP,
- s_req_http_I,
- s_req_http_IC,
- s_req_http_major,
- s_req_http_dot,
- s_req_http_minor,
- s_req_http_end,
- s_req_line_almost_done
-
- ,
- s_header_field_start,
- s_header_field,
- s_header_value_discard_ws,
- s_header_value_discard_ws_almost_done,
- s_header_value_discard_lws,
- s_header_value_start,
- s_header_value,
- s_header_value_lws
-
- ,
- s_header_almost_done
-
- ,
- s_chunk_size_start,
- s_chunk_size,
- s_chunk_parameters,
- s_chunk_size_almost_done
-
- ,
- s_headers_almost_done,
- s_headers_done
-
- /* Important: 's_headers_done' must be the last 'header' state. All
- * states beyond this must be 'body' states. It is used for overflow
- * checking. See the CROW_PARSING_HEADER() macro.
- */
-
- ,
- s_chunk_data,
- s_chunk_data_almost_done,
- s_chunk_data_done
-
- ,
- s_body_identity,
- s_body_identity_eof
-
- ,
- s_message_done
- };
-
-
-#define CROW_PARSING_HEADER(state) (state <= s_headers_done)
-
-
-enum header_states
- { h_general = 0
- , h_C
- , h_CO
- , h_CON
-
- , h_matching_connection
- , h_matching_proxy_connection
- , h_matching_content_length
- , h_matching_transfer_encoding
- , h_matching_upgrade
-
- , h_connection
- , h_content_length
- , h_content_length_num
- , h_content_length_ws
- , h_transfer_encoding
- , h_upgrade
-
- , h_matching_transfer_encoding_token_start
- , h_matching_transfer_encoding_chunked
- , h_matching_transfer_encoding_token
-
- , h_matching_connection_keep_alive
- , h_matching_connection_close
-
- , h_transfer_encoding_chunked
- , h_connection_keep_alive
- , h_connection_close
- };
-
-enum http_host_state
- {
- s_http_host_dead = 1
- , s_http_userinfo_start
- , s_http_userinfo
- , s_http_host_start
- , s_http_host_v6_start
- , s_http_host
- , s_http_host_v6
- , s_http_host_v6_end
- , s_http_host_v6_zone_start
- , s_http_host_v6_zone
- , s_http_host_port_start
- , s_http_host_port
-};
-
-/* Macros for character classes; depends on strict-mode */
-#define CROW_LOWER(c) (unsigned char)(c | 0x20)
-#define CROW_IS_ALPHA(c) (CROW_LOWER(c) >= 'a' && CROW_LOWER(c) <= 'z')
-#define CROW_IS_NUM(c) ((c) >= '0' && (c) <= '9')
-#define CROW_IS_ALPHANUM(c) (CROW_IS_ALPHA(c) || CROW_IS_NUM(c))
-//#define CROW_IS_HEX(c) (CROW_IS_NUM(c) || (CROW_LOWER(c) >= 'a' && CROW_LOWER(c) <= 'f'))
-#define CROW_IS_MARK(c) ((c) == '-' || (c) == '_' || (c) == '.' || \
- (c) == '!' || (c) == '~' || (c) == '*' || (c) == '\'' || (c) == '(' || \
- (c) == ')')
-#define CROW_IS_USERINFO_CHAR(c) (CROW_IS_ALPHANUM(c) || CROW_IS_MARK(c) || (c) == '%' || \
- (c) == ';' || (c) == ':' || (c) == '&' || (c) == '=' || (c) == '+' || \
- (c) == '$' || (c) == ',')
-
-#define CROW_TOKEN(c) (tokens[(unsigned char)c])
-#define CROW_IS_URL_CHAR(c) (CROW_BIT_AT(normal_url_char, (unsigned char)c))
-//#define CROW_IS_HOST_CHAR(c) (CROW_IS_ALPHANUM(c) || (c) == '.' || (c) == '-')
-
- /**
- * Verify that a char is a valid visible (printable) US-ASCII
- * character or %x80-FF
- **/
-#define CROW_IS_HEADER_CHAR(ch) \
- (ch == cr || ch == lf || ch == 9 || ((unsigned char)ch > 31 && ch != 127))
-
-#define CROW_start_state s_start_req
-
-# define CROW_STRICT_CHECK(cond) \
-do { \
- if (cond) { \
- CROW_SET_ERRNO(CHPE_STRICT); \
- goto error; \
- } \
-} while (0)
-#define CROW_NEW_MESSAGE() (CROW_start_state)
-
-/* Our URL parser.
- *
- * This is designed to be shared by http_parser_execute() for URL validation,
- * hence it has a state transition + byte-for-byte interface. In addition, it
- * is meant to be embedded in http_parser_parse_url(), which does the dirty
- * work of turning state transitions URL components for its API.
- *
- * This function should only be invoked with non-space characters. It is
- * assumed that the caller cares about (and can detect) the transition between
- * URL and non-URL states by looking for these.
- */
-inline enum state
-parse_url_char(enum state s, const char ch, http_parser *parser, const char* url_mark, const char* p)
-{
-# define CROW_T(v) 0
-
-
-static const uint8_t normal_url_char[32] = {
-/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
- 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
-/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
- 0 |CROW_T(2)| 0 | 0 |CROW_T(16)| 0 | 0 | 0,
-/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
- 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
-/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
- 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
-/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
- 0 | 2 | 4 | 0 | 16 | 32 | 64 | 128,
-/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 0,
-/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 80 P 81 Q 82 R 83 S 84 CROW_T 85 U 86 V 87 W */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
-/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
- 1 | 2 | 4 | 8 | 16 | 32 | 64 | 0, };
-
-#undef CROW_T
-
- if (ch == ' ' || ch == '\r' || ch == '\n') {
- return s_dead;
- }
- if (ch == '\t' || ch == '\f') {
- return s_dead;
- }
-
- switch (s) {
- case s_req_spaces_before_url:
- /* Proxied requests are followed by scheme of an absolute URI (alpha).
- * All methods except CONNECT are followed by '/' or '*'.
- */
-
- if (ch == '/' || ch == '*') {
- return s_req_path;
- }
-
- if (CROW_IS_ALPHA(ch)) {
- return s_req_schema;
- }
-
- break;
-
- case s_req_schema:
- if (CROW_IS_ALPHA(ch)) {
- return s;
- }
-
- if (ch == ':') {
- return s_req_schema_slash;
- }
-
- break;
-
- case s_req_schema_slash:
- if (ch == '/') {
- return s_req_schema_slash_slash;
- }
-
- break;
-
- case s_req_schema_slash_slash:
- if (ch == '/') {
- return s_req_server_start;
- }
-
- break;
-
- case s_req_server_with_at:
- if (ch == '@') {
- return s_dead;
- }
-
- /* fall through */
- case s_req_server_start:
- case s_req_server:
- if (ch == '/') {
- return s_req_path;
- }
-
- if (ch == '?') {
- parser->qs_point = p - url_mark;
- return s_req_query_string_start;
- }
-
- if (ch == '@') {
- return s_req_server_with_at;
- }
-
- if (CROW_IS_USERINFO_CHAR(ch) || ch == '[' || ch == ']') {
- return s_req_server;
- }
-
- break;
-
- case s_req_path:
- if (CROW_IS_URL_CHAR(ch)) {
- return s;
- }
- else if (ch == '?')
- {
- parser->qs_point = p - url_mark;
- return s_req_query_string_start;
- }
-
- break;
-
- case s_req_query_string_start:
- case s_req_query_string:
- if (CROW_IS_URL_CHAR(ch)) {
- return s_req_query_string;
- }
- else if (ch == '?')
- {
- return s_req_query_string;
- }
-
- break;
-
- default:
- break;
- }
-
- /* We should never fall out of the switch above unless there's an error */
- return s_dead;
-}
-
-inline size_t http_parser_execute (http_parser *parser,
- const http_parser_settings *settings,
- const char *data,
- size_t len)
-{
-
-/* Tokens as defined by rfc 2616. Also lowercases them.
- * token = 1*<any CHAR except CTLs or separators>
- * separators = "(" | ")" | "<" | ">" | "@"
- * | "," | ";" | ":" | "\" | <">
- * | "/" | "[" | "]" | "?" | "="
- * | "{" | "}" | SP | HT
- */
-static const char tokens[256] = {
-/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
- 0, 0, 0, 0, 0, 0, 0, 0,
-/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
- 0, 0, 0, 0, 0, 0, 0, 0,
-/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
- 0, 0, 0, 0, 0, 0, 0, 0,
-/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
- 0, 0, 0, 0, 0, 0, 0, 0,
-/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
- 0, '!', 0, '#', '$', '%', '&', '\'',
-/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
- 0, 0, '*', '+', 0, '-', '.', 0,
-/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
- '0', '1', '2', '3', '4', '5', '6', '7',
-/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
- '8', '9', 0, 0, 0, 0, 0, 0,
-/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
- 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
-/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
- 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
-/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
- 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
-/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
- 'x', 'y', 'z', 0, 0, 0, '^', '_',
-/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
- '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
-/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
- 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
-/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
- 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
-/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
- 'x', 'y', 'z', 0, '|', 0, '~', 0 };
-
-
-static const int8_t unhex[256] =
- {-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
- ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
- ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
- , 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1,-1,-1,-1,-1
- ,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
- ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
- ,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
- ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
- };
-
-
-
- char c, ch;
- int8_t unhex_val;
- const char *p = data;
- const char *header_field_mark = 0;
- const char *header_value_mark = 0;
- const char *url_mark = 0;
- const char *url_start_mark = 0;
- const char *body_mark = 0;
- const unsigned int lenient = parser->lenient_http_headers;
- const unsigned int allow_chunked_length = parser->allow_chunked_length;
-
- uint32_t nread = parser->nread;
-
- /* We're in an error state. Don't bother doing anything. */
- if (CROW_HTTP_PARSER_ERRNO(parser) != CHPE_OK) {
- return 0;
- }
-
- if (len == 0) {
- switch (parser->state) {
- case s_body_identity_eof:
- /* Use of CROW_CALLBACK_NOTIFY() here would erroneously return 1 byte read if we got paused. */
- CROW_CALLBACK_NOTIFY_NOADVANCE(message_complete);
- return 0;
-
- case s_dead:
- case s_start_req:
- return 0;
-
- default:
- CROW_SET_ERRNO(CHPE_INVALID_EOF_STATE);
- return 1;
- }
- }
-
-
- if (parser->state == s_header_field)
- header_field_mark = data;
- if (parser->state == s_header_value)
- header_value_mark = data;
- switch (parser->state) {
- case s_req_path:
- case s_req_schema:
- case s_req_schema_slash:
- case s_req_schema_slash_slash:
- case s_req_server_start:
- case s_req_server:
- case s_req_server_with_at:
- case s_req_query_string_start:
- case s_req_query_string:
- url_mark = data;
- break;
- default:
- break;
- }
-
- for (p=data; p != data + len; p++) {
- ch = *p;
-
- if (CROW_PARSING_HEADER(parser->state))
- CROW_COUNT_HEADER_SIZE(1);
-
-reexecute:
- switch (parser->state) {
-
- case s_dead:
- /* this state is used after a 'Connection: close' message
- * the parser will error out if it reads another message
- */
- if (CROW_LIKELY(ch == cr || ch == lf))
- break;
-
- CROW_SET_ERRNO(CHPE_CLOSED_CONNECTION);
- goto error;
-
- case s_start_req:
- {
- if (ch == cr || ch == lf)
- break;
- parser->flags = 0;
- parser->uses_transfer_encoding = 0;
- parser->content_length = CROW_ULLONG_MAX;
-
- if (CROW_UNLIKELY(!CROW_IS_ALPHA(ch))) {
- CROW_SET_ERRNO(CHPE_INVALID_METHOD);
- goto error;
- }
-
- parser->method = 0;
- parser->index = 1;
- switch (ch) {
- case 'A': parser->method = (unsigned)HTTPMethod::Acl; break;
- case 'B': parser->method = (unsigned)HTTPMethod::Bind; break;
- case 'C': parser->method = (unsigned)HTTPMethod::Connect; /* or COPY, CHECKOUT */ break;
- case 'D': parser->method = (unsigned)HTTPMethod::Delete; break;
- case 'G': parser->method = (unsigned)HTTPMethod::Get; break;
- case 'H': parser->method = (unsigned)HTTPMethod::Head; break;
- case 'L': parser->method = (unsigned)HTTPMethod::Lock; /* or LINK */ break;
- case 'M': parser->method = (unsigned)HTTPMethod::MkCol; /* or MOVE, MKACTIVITY, MERGE, M-SEARCH, MKCALENDAR */ break;
- case 'N': parser->method = (unsigned)HTTPMethod::Notify; break;
- case 'O': parser->method = (unsigned)HTTPMethod::Options; break;
- case 'P': parser->method = (unsigned)HTTPMethod::Post; /* or PROPFIND|PROPPATCH|PUT|PATCH|PURGE */ break;
- case 'R': parser->method = (unsigned)HTTPMethod::Report; /* or REBIND */ break;
- case 'S': parser->method = (unsigned)HTTPMethod::Subscribe; /* or SEARCH, SOURCE */ break;
- case 'T': parser->method = (unsigned)HTTPMethod::Trace; break;
- case 'U': parser->method = (unsigned)HTTPMethod::Unlock; /* or UNSUBSCRIBE, UNBIND, UNLINK */ break;
- default:
- CROW_SET_ERRNO(CHPE_INVALID_METHOD);
- goto error;
- }
- parser->state = s_req_method;
-
- CROW_CALLBACK_NOTIFY(message_begin);
-
- break;
- }
-
- case s_req_method:
- {
- const char *matcher;
- if (CROW_UNLIKELY(ch == '\0')) {
- CROW_SET_ERRNO(CHPE_INVALID_METHOD);
- goto error;
- }
-
- matcher = method_strings[parser->method];
- if (ch == ' ' && matcher[parser->index] == '\0') {
- parser->state = s_req_spaces_before_url;
- } else if (ch == matcher[parser->index]) {
- ; /* nada */
- } else if ((ch >= 'A' && ch <= 'Z') || ch == '-') {
-
- switch (parser->method << 16 | parser->index << 8 | ch) {
-#define CROW_XX(meth, pos, ch, new_meth) \
- case ((unsigned)HTTPMethod::meth << 16 | pos << 8 | ch): \
- parser->method = (unsigned)HTTPMethod::new_meth; break;
-
- CROW_XX(Post, 1, 'U', Put)
- CROW_XX(Post, 1, 'A', Patch)
- CROW_XX(Post, 1, 'R', Propfind)
- CROW_XX(Put, 2, 'R', Purge)
- CROW_XX(Connect, 1, 'H', Checkout)
- CROW_XX(Connect, 2, 'P', Copy)
- CROW_XX(MkCol, 1, 'O', Move)
- CROW_XX(MkCol, 1, 'E', Merge)
- CROW_XX(MkCol, 1, '-', MSearch)
- CROW_XX(MkCol, 2, 'A', MkActivity)
- CROW_XX(MkCol, 3, 'A', MkCalendar)
- CROW_XX(Subscribe, 1, 'E', Search)
- CROW_XX(Subscribe, 1, 'O', Source)
- CROW_XX(Report, 2, 'B', Rebind)
- CROW_XX(Propfind, 4, 'P', Proppatch)
- CROW_XX(Lock, 1, 'I', Link)
- CROW_XX(Unlock, 2, 'S', Unsubscribe)
- CROW_XX(Unlock, 2, 'B', Unbind)
- CROW_XX(Unlock, 3, 'I', Unlink)
-#undef CROW_XX
- default:
- CROW_SET_ERRNO(CHPE_INVALID_METHOD);
- goto error;
- }
- } else {
- CROW_SET_ERRNO(CHPE_INVALID_METHOD);
- goto error;
- }
-
- CROW_CALLBACK_NOTIFY_NOADVANCE(method);
-
- ++parser->index;
- break;
- }
-
- case s_req_spaces_before_url:
- {
- if (ch == ' ') break;
-
- CROW_MARK(url);
- CROW_MARK(url_start);
- if (parser->method == (unsigned)HTTPMethod::Connect) {
- parser->state = s_req_server_start;
- }
-
- parser->state = parse_url_char(static_cast<state>(parser->state), ch, parser, url_start_mark, p);
- if (CROW_UNLIKELY(parser->state == s_dead)) {
- CROW_SET_ERRNO(CHPE_INVALID_URL);
- goto error;
- }
-
- break;
- }
-
- case s_req_schema:
- case s_req_schema_slash:
- case s_req_schema_slash_slash:
- case s_req_server_start:
- {
- switch (ch) {
- /* No whitespace allowed here */
- case ' ':
- case cr:
- case lf:
- CROW_SET_ERRNO(CHPE_INVALID_URL);
- goto error;
- default:
- parser->state = parse_url_char(static_cast<state>(parser->state), ch, parser, url_start_mark, p);
- if (CROW_UNLIKELY(parser->state == s_dead)) {
- CROW_SET_ERRNO(CHPE_INVALID_URL);
- goto error;
- }
- }
-
- break;
- }
-
- case s_req_server:
- case s_req_server_with_at:
- case s_req_path:
- case s_req_query_string_start:
- case s_req_query_string:
- {
- switch (ch) {
- case ' ':
- parser->state = s_req_http_start;
- CROW_CALLBACK_DATA(url);
- break;
- case cr: // No space after URL means no HTTP version. Which means the request is using HTTP/0.9
- case lf:
- if (CROW_UNLIKELY(parser->method != (unsigned)HTTPMethod::Get)) // HTTP/0.9 doesn't define any method other than GET
- {
- parser->state = s_dead;
- CROW_SET_ERRNO(CHPE_INVALID_VERSION);
- goto error;
- }
- parser->http_major = 0;
- parser->http_minor = 9;
- parser->state = (ch == cr) ?
- s_req_line_almost_done :
- s_header_field_start;
- CROW_CALLBACK_DATA(url);
- break;
- default:
- parser->state = parse_url_char(static_cast<state>(parser->state), ch, parser, url_start_mark, p);
- if (CROW_UNLIKELY(parser->state == s_dead)) {
- CROW_SET_ERRNO(CHPE_INVALID_URL);
- goto error;
- }
- }
- break;
- }
-
- case s_req_http_start:
- switch (ch) {
- case ' ':
- break;
- case 'H':
- parser->state = s_req_http_H;
- break;
- case 'I':
- if (parser->method == (unsigned)HTTPMethod::Source) {
- parser->state = s_req_http_I;
- break;
- }
- /* fall through */
- default:
- CROW_SET_ERRNO(CHPE_INVALID_CONSTANT);
- goto error;
- }
- break;
-
- case s_req_http_H:
- CROW_STRICT_CHECK(ch != 'T');
- parser->state = s_req_http_HT;
- break;
-
- case s_req_http_HT:
- CROW_STRICT_CHECK(ch != 'T');
- parser->state = s_req_http_HTT;
- break;
-
- case s_req_http_HTT:
- CROW_STRICT_CHECK(ch != 'P');
- parser->state = s_req_http_HTTP;
- break;
-
- case s_req_http_I:
- CROW_STRICT_CHECK(ch != 'C');
- parser->state = s_req_http_IC;
- break;
-
- case s_req_http_IC:
- CROW_STRICT_CHECK(ch != 'E');
- parser->state = s_req_http_HTTP; /* Treat "ICE" as "HTTP". */
- break;
-
- case s_req_http_HTTP:
- CROW_STRICT_CHECK(ch != '/');
- parser->state = s_req_http_major;
- break;
-
- /* dot */
- case s_req_http_major:
- if (CROW_UNLIKELY(!CROW_IS_NUM(ch))) {
- CROW_SET_ERRNO(CHPE_INVALID_VERSION);
- goto error;
- }
-
- parser->http_major = ch - '0';
- parser->state = s_req_http_dot;
- break;
-
- case s_req_http_dot:
- {
- if (CROW_UNLIKELY(ch != '.')) {
- CROW_SET_ERRNO(CHPE_INVALID_VERSION);
- goto error;
- }
-
- parser->state = s_req_http_minor;
- break;
- }
-
- /* minor HTTP version */
- case s_req_http_minor:
- if (CROW_UNLIKELY(!CROW_IS_NUM(ch))) {
- CROW_SET_ERRNO(CHPE_INVALID_VERSION);
- goto error;
- }
-
- parser->http_minor = ch - '0';
- parser->state = s_req_http_end;
- break;
-
- /* end of request line */
- case s_req_http_end:
- {
- if (ch == cr) {
- parser->state = s_req_line_almost_done;
- break;
- }
-
- if (ch == lf) {
- parser->state = s_header_field_start;
- break;
- }
-
- CROW_SET_ERRNO(CHPE_INVALID_VERSION);
- goto error;
- break;
- }
-
- /* end of request line */
- case s_req_line_almost_done:
- {
- if (CROW_UNLIKELY(ch != lf)) {
- CROW_SET_ERRNO(CHPE_LF_EXPECTED);
- goto error;
- }
-
- parser->state = s_header_field_start;
- break;
- }
-
- case s_header_field_start:
- {
- if (ch == cr) {
- parser->state = s_headers_almost_done;
- break;
- }
-
- if (ch == lf) {
- /* they might be just sending \n instead of \r\n so this would be
- * the second \n to denote the end of headers*/
- parser->state = s_headers_almost_done;
- CROW_REEXECUTE();
- }
-
- c = CROW_TOKEN(ch);
-
- if (CROW_UNLIKELY(!c)) {
- CROW_SET_ERRNO(CHPE_INVALID_HEADER_TOKEN);
- goto error;
- }
-
- CROW_MARK(header_field);
-
- parser->index = 0;
- parser->state = s_header_field;
-
- switch (c) {
- case 'c':
- parser->header_state = h_C;
- break;
-
- case 'p':
- parser->header_state = h_matching_proxy_connection;
- break;
-
- case 't':
- parser->header_state = h_matching_transfer_encoding;
- break;
-
- case 'u':
- parser->header_state = h_matching_upgrade;
- break;
-
- default:
- parser->header_state = h_general;
- break;
- }
- break;
- }
-
- case s_header_field:
- {
- const char* start = p;
- for (; p != data + len; p++) {
- ch = *p;
- c = CROW_TOKEN(ch);
-
- if (!c)
- break;
-
- switch (parser->header_state) {
- case h_general: {
- size_t left = data + len - p;
- const char* pe = p + CROW_MIN(left, max_header_size);
- while (p+1 < pe && CROW_TOKEN(p[1])) {
- p++;
- }
- break;
- }
-
- case h_C:
- parser->index++;
- parser->header_state = (c == 'o' ? h_CO : h_general);
- break;
-
- case h_CO:
- parser->index++;
- parser->header_state = (c == 'n' ? h_CON : h_general);
- break;
-
- case h_CON:
- parser->index++;
- switch (c) {
- case 'n':
- parser->header_state = h_matching_connection;
- break;
- case 't':
- parser->header_state = h_matching_content_length;
- break;
- default:
- parser->header_state = h_general;
- break;
- }
- break;
-
- /* connection */
-
- case h_matching_connection:
- parser->index++;
- if (parser->index > sizeof(CROW_CONNECTION)-1 || c != CROW_CONNECTION[parser->index]) {
- parser->header_state = h_general;
- } else if (parser->index == sizeof(CROW_CONNECTION)-2) {
- parser->header_state = h_connection;
- }
- break;
-
- /* proxy-connection */
-
- case h_matching_proxy_connection:
- parser->index++;
- if (parser->index > sizeof(CROW_PROXY_CONNECTION)-1 || c != CROW_PROXY_CONNECTION[parser->index]) {
- parser->header_state = h_general;
- } else if (parser->index == sizeof(CROW_PROXY_CONNECTION)-2) {
- parser->header_state = h_connection;
- }
- break;
-
- /* content-length */
-
- case h_matching_content_length:
- parser->index++;
- if (parser->index > sizeof(CROW_CONTENT_LENGTH)-1 || c != CROW_CONTENT_LENGTH[parser->index]) {
- parser->header_state = h_general;
- } else if (parser->index == sizeof(CROW_CONTENT_LENGTH)-2) {
- parser->header_state = h_content_length;
- }
- break;
-
- /* transfer-encoding */
-
- case h_matching_transfer_encoding:
- parser->index++;
- if (parser->index > sizeof(CROW_TRANSFER_ENCODING)-1 || c != CROW_TRANSFER_ENCODING[parser->index]) {
- parser->header_state = h_general;
- } else if (parser->index == sizeof(CROW_TRANSFER_ENCODING)-2) {
- parser->header_state = h_transfer_encoding;
- parser->uses_transfer_encoding = 1;
- }
- break;
-
- /* upgrade */
-
- case h_matching_upgrade:
- parser->index++;
- if (parser->index > sizeof(CROW_UPGRADE)-1 || c != CROW_UPGRADE[parser->index]) {
- parser->header_state = h_general;
- } else if (parser->index == sizeof(CROW_UPGRADE)-2) {
- parser->header_state = h_upgrade;
- }
- break;
-
- case h_connection:
- case h_content_length:
- case h_transfer_encoding:
- case h_upgrade:
- if (ch != ' ') parser->header_state = h_general;
- break;
-
- default:
- assert(0 && "Unknown header_state");
- break;
- }
- }
-
- if (p == data + len) {
- --p;
- CROW_COUNT_HEADER_SIZE(p - start);
- break;
- }
-
- CROW_COUNT_HEADER_SIZE(p - start);
-
- if (ch == ':') {
- parser->state = s_header_value_discard_ws;
- CROW_CALLBACK_DATA(header_field);
- break;
- }
-/* RFC-7230 Sec 3.2.4 expressly forbids line-folding in header field-names.
- if (ch == cr) {
- parser->state = s_header_almost_done;
- CROW_CALLBACK_DATA(header_field);
- break;
- }
-
- if (ch == lf) {
- parser->state = s_header_field_start;
- CROW_CALLBACK_DATA(header_field);
- break;
- }
-*/
- CROW_SET_ERRNO(CHPE_INVALID_HEADER_TOKEN);
- goto error;
- }
-
- case s_header_value_discard_ws:
- if (ch == ' ' || ch == '\t') break;
-
- if (ch == cr) {
- parser->state = s_header_value_discard_ws_almost_done;
- break;
- }
-
- if (ch == lf) {
- parser->state = s_header_value_discard_lws;
- break;
- }
-
- /* fall through */
-
- case s_header_value_start:
- {
- CROW_MARK(header_value);
-
- parser->state = s_header_value;
- parser->index = 0;
-
- c = CROW_LOWER(ch);
-
- switch (parser->header_state) {
- case h_upgrade:
- // Crow does not support HTTP/2 at the moment.
- // According to the RFC https://datatracker.ietf.org/doc/html/rfc7540#section-3.2
- // "A server that does not support HTTP/2 can respond to the request as though the Upgrade header field were absent"
- // => `F_UPGRADE` is not set if the header starts by "h2".
- // This prevents the parser from skipping the request body.
- if (ch != 'h' || p+1 == (data + len) || *(p+1) != '2') {
- parser->flags |= F_UPGRADE;
- }
- parser->header_state = h_general;
- break;
-
- case h_transfer_encoding:
- /* looking for 'Transfer-Encoding: chunked' */
- if ('c' == c) {
- parser->header_state = h_matching_transfer_encoding_chunked;
- } else {
- parser->header_state = h_matching_transfer_encoding_token;
- }
- break;
-
- /* Multi-value `Transfer-Encoding` header */
- case h_matching_transfer_encoding_token_start:
- break;
-
- case h_content_length:
- if (CROW_UNLIKELY(!CROW_IS_NUM(ch))) {
- CROW_SET_ERRNO(CHPE_INVALID_CONTENT_LENGTH);
- goto error;
- }
-
- if (parser->flags & F_CONTENTLENGTH) {
- CROW_SET_ERRNO(CHPE_UNEXPECTED_CONTENT_LENGTH);
- goto error;
- }
- parser->flags |= F_CONTENTLENGTH;
- parser->content_length = ch - '0';
- parser->header_state = h_content_length_num;
- break;
-
- /* when obsolete line folding is encountered for content length
- * continue to the s_header_value state */
- case h_content_length_ws:
- break;
-
- case h_connection:
- /* looking for 'Connection: keep-alive' */
- if (c == 'k') {
- parser->header_state = h_matching_connection_keep_alive;
- /* looking for 'Connection: close' */
- } else if (c == 'c') {
- parser->header_state = h_matching_connection_close;
- } else if (c == ' ' || c == '\t') {
- /* Skip lws */
- } else {
- parser->header_state = h_general;
- }
- break;
-
- default:
- parser->header_state = h_general;
- break;
- }
- break;
- }
-
- case s_header_value:
- {
- const char* start = p;
- enum header_states h_state = static_cast<header_states>(parser->header_state);
- for (; p != data + len; p++) {
- ch = *p;
-
- if (ch == cr) {
- parser->state = s_header_almost_done;
- parser->header_state = h_state;
- CROW_CALLBACK_DATA(header_value);
- break;
- }
-
- if (ch == lf) {
- parser->state = s_header_almost_done;
- CROW_COUNT_HEADER_SIZE(p - start);
- parser->header_state = h_state;
- CROW_CALLBACK_DATA_NOADVANCE(header_value);
- CROW_REEXECUTE();
- }
-
- if (!lenient && !CROW_IS_HEADER_CHAR(ch)) {
- CROW_SET_ERRNO(CHPE_INVALID_HEADER_TOKEN);
- goto error;
- }
-
- c = CROW_LOWER(ch);
-
- switch (h_state) {
- case h_general:
- {
- size_t left = data + len - p;
- const char* pe = p + CROW_MIN(left, max_header_size);
-
- for (; p != pe; p++) {
- ch = *p;
- if (ch == cr || ch == lf) {
- --p;
- break;
- }
- if (!lenient && !CROW_IS_HEADER_CHAR(ch)) {
- CROW_SET_ERRNO(CHPE_INVALID_HEADER_TOKEN);
- goto error;
- }
- }
- if (p == data + len)
- --p;
- break;
- }
-
- case h_connection:
- case h_transfer_encoding:
- assert(0 && "Shouldn't get here.");
- break;
-
- case h_content_length:
- if (ch == ' ') break;
- h_state = h_content_length_num;
- /* fall through */
-
- case h_content_length_num:
- {
- uint64_t t;
-
- if (ch == ' ') {
- h_state = h_content_length_ws;
- break;
- }
-
- if (CROW_UNLIKELY(!CROW_IS_NUM(ch))) {
- CROW_SET_ERRNO(CHPE_INVALID_CONTENT_LENGTH);
- parser->header_state = h_state;
- goto error;
- }
-
- t = parser->content_length;
- t *= 10;
- t += ch - '0';
-
- /* Overflow? Test against a conservative limit for simplicity. */
- if (CROW_UNLIKELY((CROW_ULLONG_MAX - 10) / 10 < parser->content_length)) {
- CROW_SET_ERRNO(CHPE_INVALID_CONTENT_LENGTH);
- parser->header_state = h_state;
- goto error;
- }
-
- parser->content_length = t;
- break;
- }
-
- case h_content_length_ws:
- if (ch == ' ') break;
- CROW_SET_ERRNO(CHPE_INVALID_CONTENT_LENGTH);
- parser->header_state = h_state;
- goto error;
-
- /* Transfer-Encoding: chunked */
- case h_matching_transfer_encoding_token_start:
- /* looking for 'Transfer-Encoding: chunked' */
- if ('c' == c) {
- h_state = h_matching_transfer_encoding_chunked;
- } else if (CROW_TOKEN(c)) {
- /* TODO(indutny): similar code below does this, but why?
- * At the very least it seems to be inconsistent given that
- * h_matching_transfer_encoding_token does not check for
- * `STRICT_TOKEN`
- */
- h_state = h_matching_transfer_encoding_token;
- } else if (c == ' ' || c == '\t') {
- /* Skip lws */
- } else {
- h_state = h_general;
- }
- break;
-
- case h_matching_transfer_encoding_chunked:
- parser->index++;
- if (parser->index > sizeof(CROW_CHUNKED)-1 || c != CROW_CHUNKED[parser->index]) {
- h_state = h_matching_transfer_encoding_token;
- } else if (parser->index == sizeof(CROW_CHUNKED)-2) {
- h_state = h_transfer_encoding_chunked;
- }
- break;
-
- case h_matching_transfer_encoding_token:
- if (ch == ',') {
- h_state = h_matching_transfer_encoding_token_start;
- parser->index = 0;
- }
- break;
-
- /* looking for 'Connection: keep-alive' */
- case h_matching_connection_keep_alive:
- parser->index++;
- if (parser->index > sizeof(CROW_KEEP_ALIVE)-1 || c != CROW_KEEP_ALIVE[parser->index]) {
- h_state = h_general;
- } else if (parser->index == sizeof(CROW_KEEP_ALIVE)-2) {
- h_state = h_connection_keep_alive;
- }
- break;
-
- /* looking for 'Connection: close' */
- case h_matching_connection_close:
- parser->index++;
- if (parser->index > sizeof(CROW_CLOSE)-1 || c != CROW_CLOSE[parser->index]) {
- h_state = h_general;
- } else if (parser->index == sizeof(CROW_CLOSE)-2) {
- h_state = h_connection_close;
- }
- break;
-
- // Edited from original (because of commits that werent included)
- case h_transfer_encoding_chunked:
- if (ch != ' ') h_state = h_matching_transfer_encoding_token;
- break;
- case h_connection_keep_alive:
- case h_connection_close:
- if (ch != ' ') h_state = h_general;
- break;
-
- default:
- parser->state = s_header_value;
- h_state = h_general;
- break;
- }
- }
- parser->header_state = h_state;
-
-
- if (p == data + len)
- --p;
-
- CROW_COUNT_HEADER_SIZE(p - start);
- break;
- }
-
- case s_header_almost_done:
- {
- if (CROW_UNLIKELY(ch != lf)) {
- CROW_SET_ERRNO(CHPE_LF_EXPECTED);
- goto error;
- }
-
- parser->state = s_header_value_lws;
- break;
- }
-
- case s_header_value_lws:
- {
- if (ch == ' ' || ch == '\t') {
- if (parser->header_state == h_content_length_num) {
- /* treat obsolete line folding as space */
- parser->header_state = h_content_length_ws;
- }
- parser->state = s_header_value_start;
- CROW_REEXECUTE();
- }
-
- /* finished the header */
- switch (parser->header_state) {
- case h_connection_keep_alive:
- parser->flags |= F_CONNECTION_KEEP_ALIVE;
- break;
- case h_connection_close:
- parser->flags |= F_CONNECTION_CLOSE;
- break;
- case h_transfer_encoding_chunked:
- parser->flags |= F_CHUNKED;
- break;
- default:
- break;
- }
-
- parser->state = s_header_field_start;
- CROW_REEXECUTE();
- }
-
- case s_header_value_discard_ws_almost_done:
- {
- CROW_STRICT_CHECK(ch != lf);
- parser->state = s_header_value_discard_lws;
- break;
- }
-
- case s_header_value_discard_lws:
- {
- if (ch == ' ' || ch == '\t') {
- parser->state = s_header_value_discard_ws;
- break;
- } else {
- /* header value was empty */
- CROW_MARK(header_value);
- parser->state = s_header_field_start;
- CROW_CALLBACK_DATA_NOADVANCE(header_value);
- CROW_REEXECUTE();
- }
- }
-
- case s_headers_almost_done:
- {
- CROW_STRICT_CHECK(ch != lf);
-
- if (parser->flags & F_TRAILING) {
- /* End of a chunked request */
- CROW_CALLBACK_NOTIFY(message_complete);
- break;
- }
-
- /* Cannot use transfer-encoding and a content-length header together
- per the HTTP specification. (RFC 7230 Section 3.3.3) */
- if ((parser->uses_transfer_encoding == 1) &&
- (parser->flags & F_CONTENTLENGTH)) {
- /* Allow it for lenient parsing as long as `Transfer-Encoding` is
- * not `chunked` or allow_length_with_encoding is set
- */
- if (parser->flags & F_CHUNKED) {
- if (!allow_chunked_length) {
- CROW_SET_ERRNO(CHPE_UNEXPECTED_CONTENT_LENGTH);
- goto error;
- }
- } else if (!lenient) {
- CROW_SET_ERRNO(CHPE_UNEXPECTED_CONTENT_LENGTH);
- goto error;
- }
- }
-
- parser->state = s_headers_done;
-
- /* Set this here so that on_headers_complete() callbacks can see it */
- parser->upgrade =
- (parser->flags & F_UPGRADE || parser->method == (unsigned)HTTPMethod::Connect);
-
- /* Here we call the headers_complete callback. This is somewhat
- * different than other callbacks because if the user returns 1, we
- * will interpret that as saying that this message has no body. This
- * is needed for the annoying case of recieving a response to a HEAD
- * request.
- *
- * We'd like to use CROW_CALLBACK_NOTIFY_NOADVANCE() here but we cannot, so
- * we have to simulate it by handling a change in errno below.
- */
- if (settings->on_headers_complete) {
- switch (settings->on_headers_complete(parser)) {
- case 0:
- break;
-
- case 2:
- parser->upgrade = 1;
- //break;
-
- /* fall through */
- case 1:
- parser->flags |= F_SKIPBODY;
- break;
-
- default:
- CROW_SET_ERRNO(CHPE_CB_headers_complete);
- parser->nread = nread;
- return p - data; /* Error */
- }
- }
-
- if (CROW_HTTP_PARSER_ERRNO(parser) != CHPE_OK) {
- parser->nread = nread;
- return p - data;
- }
-
- CROW_REEXECUTE();
- }
-
- case s_headers_done:
- {
- CROW_STRICT_CHECK(ch != lf);
-
- parser->nread = 0;
- nread = 0;
-
- /* Exit, the rest of the connect is in a different protocol. */
- if (parser->upgrade) {
- CROW_CALLBACK_NOTIFY(message_complete);
- parser->nread = nread;
- return (p - data) + 1;
- }
-
- if (parser->flags & F_SKIPBODY) {
- CROW_CALLBACK_NOTIFY(message_complete);
- } else if (parser->flags & F_CHUNKED) {
- /* chunked encoding - ignore Content-Length header,
- * prepare for a chunk */
- parser->state = s_chunk_size_start;
- }
- else if (parser->uses_transfer_encoding == 1)
- {
- if (!lenient)
- {
- /* RFC 7230 3.3.3 */
-
- /* If a Transfer-Encoding header field
- * is present in a request and the chunked transfer coding is not
- * the final encoding, the message body length cannot be determined
- * reliably; the server MUST respond with the 400 (Bad Request)
- * status code and then close the connection.
- */
- CROW_SET_ERRNO(CHPE_INVALID_TRANSFER_ENCODING);
- parser->nread = nread;
- return (p - data); /* Error */
- }
- else
- {
- /* RFC 7230 3.3.3 */
-
- /* If a Transfer-Encoding header field is present in a response and
- * the chunked transfer coding is not the final encoding, the
- * message body length is determined by reading the connection until
- * it is closed by the server.
- */
- parser->state = s_body_identity_eof;
- }
- }
- else
- {
- if (parser->content_length == 0)
- {
- /* Content-Length header given but zero: Content-Length: 0\r\n */
- CROW_CALLBACK_NOTIFY(message_complete);
- }
- else if (parser->content_length != CROW_ULLONG_MAX)
- {
- /* Content-Length header given and non-zero */
- parser->state = s_body_identity;
- }
- else
- {
- /* Assume content-length 0 - read the next */
- CROW_CALLBACK_NOTIFY(message_complete);
- }
- }
-
- break;
- }
-
- case s_body_identity:
- {
- uint64_t to_read = CROW_MIN(parser->content_length,
- (uint64_t) ((data + len) - p));
-
- assert(parser->content_length != 0
- && parser->content_length != CROW_ULLONG_MAX);
-
- /* The difference between advancing content_length and p is because
- * the latter will automaticaly advance on the next loop iteration.
- * Further, if content_length ends up at 0, we want to see the last
- * byte again for our message complete callback.
- */
- CROW_MARK(body);
- parser->content_length -= to_read;
- p += to_read - 1;
-
- if (parser->content_length == 0) {
- parser->state = s_message_done;
-
- /* Mimic CROW_CALLBACK_DATA_NOADVANCE() but with one extra byte.
- *
- * The alternative to doing this is to wait for the next byte to
- * trigger the data callback, just as in every other case. The
- * problem with this is that this makes it difficult for the test
- * harness to distinguish between complete-on-EOF and
- * complete-on-length. It's not clear that this distinction is
- * important for applications, but let's keep it for now.
- */
- CROW_CALLBACK_DATA_(body, p - body_mark + 1, p - data);
- CROW_REEXECUTE();
- }
-
- break;
- }
-
- /* read until EOF */
- case s_body_identity_eof:
- CROW_MARK(body);
- p = data + len - 1;
-
- break;
-
- case s_message_done:
- CROW_CALLBACK_NOTIFY(message_complete);
- break;
-
- case s_chunk_size_start:
- {
- assert(nread == 1);
- assert(parser->flags & F_CHUNKED);
-
- unhex_val = unhex[static_cast<unsigned char>(ch)];
- if (CROW_UNLIKELY(unhex_val == -1)) {
- CROW_SET_ERRNO(CHPE_INVALID_CHUNK_SIZE);
- goto error;
- }
-
- parser->content_length = unhex_val;
- parser->state = s_chunk_size;
- break;
- }
-
- case s_chunk_size:
- {
- uint64_t t;
-
- assert(parser->flags & F_CHUNKED);
-
- if (ch == cr) {
- parser->state = s_chunk_size_almost_done;
- break;
- }
-
- unhex_val = unhex[static_cast<unsigned char>(ch)];
-
- if (unhex_val == -1) {
- if (ch == ';' || ch == ' ') {
- parser->state = s_chunk_parameters;
- break;
- }
-
- CROW_SET_ERRNO(CHPE_INVALID_CHUNK_SIZE);
- goto error;
- }
-
- t = parser->content_length;
- t *= 16;
- t += unhex_val;
-
- /* Overflow? Test against a conservative limit for simplicity. */
- if (CROW_UNLIKELY((CROW_ULLONG_MAX - 16) / 16 < parser->content_length)) {
- CROW_SET_ERRNO(CHPE_INVALID_CONTENT_LENGTH);
- goto error;
- }
-
- parser->content_length = t;
- break;
- }
-
- case s_chunk_parameters:
- {
- assert(parser->flags & F_CHUNKED);
- /* just ignore this shit. TODO check for overflow */
- if (ch == cr) {
- parser->state = s_chunk_size_almost_done;
- break;
- }
- break;
- }
-
- case s_chunk_size_almost_done:
- {
- assert(parser->flags & F_CHUNKED);
- CROW_STRICT_CHECK(ch != lf);
-
- parser->nread = 0;
- nread = 0;
-
- if (parser->content_length == 0) {
- parser->flags |= F_TRAILING;
- parser->state = s_header_field_start;
- } else {
- parser->state = s_chunk_data;
- }
- break;
- }
-
- case s_chunk_data:
- {
- uint64_t to_read = CROW_MIN(parser->content_length,
- (uint64_t) ((data + len) - p));
-
- assert(parser->flags & F_CHUNKED);
- assert(parser->content_length != 0
- && parser->content_length != CROW_ULLONG_MAX);
-
- /* See the explanation in s_body_identity for why the content
- * length and data pointers are managed this way.
- */
- CROW_MARK(body);
- parser->content_length -= to_read;
- p += to_read - 1;
-
- if (parser->content_length == 0) {
- parser->state = s_chunk_data_almost_done;
- }
-
- break;
- }
-
- case s_chunk_data_almost_done:
- assert(parser->flags & F_CHUNKED);
- assert(parser->content_length == 0);
- CROW_STRICT_CHECK(ch != cr);
- parser->state = s_chunk_data_done;
- CROW_CALLBACK_DATA(body);
- break;
-
- case s_chunk_data_done:
- assert(parser->flags & F_CHUNKED);
- CROW_STRICT_CHECK(ch != lf);
- parser->nread = 0;
- nread = 0;
- parser->state = s_chunk_size_start;
- break;
-
- default:
- assert(0 && "unhandled state");
- CROW_SET_ERRNO(CHPE_INVALID_INTERNAL_STATE);
- goto error;
- }
- }
-
- /* Run callbacks for any marks that we have leftover after we ran out of
- * bytes. There should be at most one of these set, so it's OK to invoke
- * them in series (unset marks will not result in callbacks).
- *
- * We use the NOADVANCE() variety of callbacks here because 'p' has already
- * overflowed 'data' and this allows us to correct for the off-by-one that
- * we'd otherwise have (since CROW_CALLBACK_DATA() is meant to be run with a 'p'
- * value that's in-bounds).
- */
-
- assert(((header_field_mark ? 1 : 0) +
- (header_value_mark ? 1 : 0) +
- (url_mark ? 1 : 0) +
- (body_mark ? 1 : 0)) <= 1);
-
- CROW_CALLBACK_DATA_NOADVANCE(header_field);
- CROW_CALLBACK_DATA_NOADVANCE(header_value);
- CROW_CALLBACK_DATA_NOADVANCE(url);
- CROW_CALLBACK_DATA_NOADVANCE(body);
-
- parser->nread = nread;
- return len;
-
-error:
- if (CROW_HTTP_PARSER_ERRNO(parser) == CHPE_OK) {
- CROW_SET_ERRNO(CHPE_UNKNOWN);
- }
-
- parser->nread = nread;
- return (p - data);
-}
-
-inline void
- http_parser_init(http_parser* parser)
-{
- void *data = parser->data; /* preserve application data */
- memset(parser, 0, sizeof(*parser));
- parser->data = data;
- parser->state = s_start_req;
- parser->http_errno = CHPE_OK;
-}
-
-/* Return a string name of the given error */
-inline const char *
-http_errno_name(enum http_errno err) {
-/* Map errno values to strings for human-readable output */
-#define CROW_HTTP_STRERROR_GEN(n, s) { "CHPE_" #n, s },
-static struct {
- const char *name;
- const char *description;
-} http_strerror_tab[] = {
- CROW_HTTP_ERRNO_MAP(CROW_HTTP_STRERROR_GEN)
-};
-#undef CROW_HTTP_STRERROR_GEN
- assert(((size_t) err) < CROW_ARRAY_SIZE(http_strerror_tab));
- return http_strerror_tab[err].name;
-}
-
-/* Return a string description of the given error */
-inline const char *
-http_errno_description(enum http_errno err) {
-/* Map errno values to strings for human-readable output */
-#define CROW_HTTP_STRERROR_GEN(n, s) { "CHPE_" #n, s },
-static struct {
- const char *name;
- const char *description;
-} http_strerror_tab[] = {
- CROW_HTTP_ERRNO_MAP(CROW_HTTP_STRERROR_GEN)
-};
-#undef CROW_HTTP_STRERROR_GEN
- assert(((size_t) err) < CROW_ARRAY_SIZE(http_strerror_tab));
- return http_strerror_tab[err].description;
-}
-
-/* Checks if this is the final chunk of the body. */
-inline int
-http_body_is_final(const struct http_parser *parser) {
- return parser->state == s_message_done;
-}
-
-/* Change the maximum header size provided at compile time. */
-inline void
-http_parser_set_max_header_size(uint32_t size) {
- max_header_size = size;
-}
-
-#undef CROW_HTTP_ERRNO_MAP
-#undef CROW_SET_ERRNO
-#undef CROW_CALLBACK_NOTIFY_
-#undef CROW_CALLBACK_NOTIFY
-#undef CROW_CALLBACK_NOTIFY_NOADVANCE
-#undef CROW_CALLBACK_DATA_
-#undef CROW_CALLBACK_DATA
-#undef CROW_CALLBACK_DATA_NOADVANCE
-#undef CROW_MARK
-#undef CROW_PROXY_CONNECTION
-#undef CROW_CONNECTION
-#undef CROW_CONTENT_LENGTH
-#undef CROW_TRANSFER_ENCODING
-#undef CROW_UPGRADE
-#undef CROW_CHUNKED
-#undef CROW_KEEP_ALIVE
-#undef CROW_CLOSE
-#undef CROW_PARSING_HEADER
-#undef CROW_LOWER
-#undef CROW_IS_ALPHA
-#undef CROW_IS_NUM
-#undef CROW_IS_ALPHANUM
-//#undef CROW_IS_HEX
-#undef CROW_IS_MARK
-#undef CROW_IS_USERINFO_CHAR
-#undef CROW_TOKEN
-#undef CROW_IS_URL_CHAR
-//#undef CROW_IS_HOST_CHAR
-#undef CROW_STRICT_CHECK
-
-}
-
-// clang-format on
-
-
-#include <string>
-#include <unordered_map>
-#include <algorithm>
-
-
-namespace crow
-{
- /// A wrapper for `nodejs/http-parser`.
-
- ///
- /// Used to generate a \ref crow.request from the TCP socket buffer.
- template<typename Handler>
- struct HTTPParser : public http_parser
- {
- static int on_message_begin(http_parser*)
- {
- return 0;
- }
- static int on_method(http_parser* self_)
- {
- HTTPParser* self = static_cast<HTTPParser*>(self_);
- self->req.method = static_cast<HTTPMethod>(self->method);
-
- return 0;
- }
- static int on_url(http_parser* self_, const char* at, size_t length)
- {
- HTTPParser* self = static_cast<HTTPParser*>(self_);
- self->req.raw_url.insert(self->req.raw_url.end(), at, at + length);
- self->req.url_params = query_string(self->req.raw_url);
- self->req.url = self->req.raw_url.substr(0, self->qs_point != 0 ? self->qs_point : std::string::npos);
-
- self->process_url();
-
- return 0;
- }
- static int on_header_field(http_parser* self_, const char* at, size_t length)
- {
- HTTPParser* self = static_cast<HTTPParser*>(self_);
- switch (self->header_building_state)
- {
- case 0:
- if (!self->header_value.empty())
- {
- self->req.headers.emplace(std::move(self->header_field), std::move(self->header_value));
- }
- self->header_field.assign(at, at + length);
- self->header_building_state = 1;
- break;
- case 1:
- self->header_field.insert(self->header_field.end(), at, at + length);
- break;
- }
- return 0;
- }
- static int on_header_value(http_parser* self_, const char* at, size_t length)
- {
- HTTPParser* self = static_cast<HTTPParser*>(self_);
- switch (self->header_building_state)
- {
- case 0:
- self->header_value.insert(self->header_value.end(), at, at + length);
- break;
- case 1:
- self->header_building_state = 0;
- self->header_value.assign(at, at + length);
- break;
- }
- return 0;
- }
- static int on_headers_complete(http_parser* self_)
- {
- HTTPParser* self = static_cast<HTTPParser*>(self_);
- if (!self->header_field.empty())
- {
- self->req.headers.emplace(std::move(self->header_field), std::move(self->header_value));
- }
-
- self->set_connection_parameters();
-
- self->process_header();
- return 0;
- }
- static int on_body(http_parser* self_, const char* at, size_t length)
- {
- HTTPParser* self = static_cast<HTTPParser*>(self_);
- self->req.body.insert(self->req.body.end(), at, at + length);
- return 0;
- }
- static int on_message_complete(http_parser* self_)
- {
- HTTPParser* self = static_cast<HTTPParser*>(self_);
-
- self->message_complete = true;
- self->process_message();
- return 0;
- }
- HTTPParser(Handler* handler):
- handler_(handler)
- {
- http_parser_init(this);
- }
-
- // return false on error
- /// Parse a buffer into the different sections of an HTTP request.
- bool feed(const char* buffer, int length)
- {
- if (message_complete)
- return true;
-
- const static http_parser_settings settings_{
- on_message_begin,
- on_method,
- on_url,
- on_header_field,
- on_header_value,
- on_headers_complete,
- on_body,
- on_message_complete,
- };
-
- int nparsed = http_parser_execute(this, &settings_, buffer, length);
- if (http_errno != CHPE_OK)
- {
- return false;
- }
- return nparsed == length;
- }
-
- bool done()
- {
- return feed(nullptr, 0);
- }
-
- void clear()
- {
- req = crow::request();
- header_field.clear();
- header_value.clear();
- header_building_state = 0;
- qs_point = 0;
- message_complete = false;
- state = CROW_NEW_MESSAGE();
- }
-
- inline void process_url()
- {
- handler_->handle_url();
- }
-
- inline void process_header()
- {
- handler_->handle_header();
- }
-
- inline void process_message()
- {
- handler_->handle();
- }
-
- inline void set_connection_parameters()
- {
- req.http_ver_major = http_major;
- req.http_ver_minor = http_minor;
-
- //NOTE(EDev): it seems that the problem is with crow's policy on closing the connection for HTTP_VERSION < 1.0, the behaviour for that in crow is "don't close the connection, but don't send a keep-alive either"
-
- // HTTP1.1 = always send keep_alive, HTTP1.0 = only send if header exists, HTTP?.? = never send
- req.keep_alive = (http_major == 1 && http_minor == 0) ?
- ((flags & F_CONNECTION_KEEP_ALIVE) ? true : false) :
- ((http_major == 1 && http_minor == 1) ? true : false);
-
- // HTTP1.1 = only close if close header exists, HTTP1.0 = always close unless keep_alive header exists, HTTP?.?= never close
- req.close_connection = (http_major == 1 && http_minor == 0) ?
- ((flags & F_CONNECTION_KEEP_ALIVE) ? false : true) :
- ((http_major == 1 && http_minor == 1) ? ((flags & F_CONNECTION_CLOSE) ? true : false) : false);
- req.upgrade = static_cast<bool>(upgrade);
- }
-
- /// The final request that this parser outputs.
- ///
- /// Data parsed is put directly into this object as soon as the related callback returns. (e.g. the request will have the cooorect method as soon as on_method() returns)
- request req;
-
- private:
- int header_building_state = 0;
- bool message_complete = false;
- std::string header_field;
- std::string header_value;
-
- Handler* handler_; ///< This is currently an HTTP connection object (\ref crow.Connection).
- };
-} // namespace crow
-
-#undef CROW_NEW_MESSAGE
-#undef CROW_start_state
-
-
-
-#include <cstdio>
-#include <cstdlib>
-#include <ctime>
-#include <iostream>
-#include <sstream>
-#include <string>
-
-namespace crow
-{
- enum class LogLevel
- {
-#ifndef ERROR
-#ifndef DEBUG
- DEBUG = 0,
- INFO,
- WARNING,
- ERROR,
- CRITICAL,
-#endif
-#endif
-
- Debug = 0,
- Info,
- Warning,
- Error,
- Critical,
- };
-
- class ILogHandler
- {
- public:
- virtual ~ILogHandler() = default;
-
- virtual void log(std::string message, LogLevel level) = 0;
- };
-
- class CerrLogHandler : public ILogHandler
- {
- public:
- void log(std::string message, LogLevel level) override
- {
- std::string prefix;
- switch (level)
- {
- case LogLevel::Debug:
- prefix = "DEBUG ";
- break;
- case LogLevel::Info:
- prefix = "INFO ";
- break;
- case LogLevel::Warning:
- prefix = "WARNING ";
- break;
- case LogLevel::Error:
- prefix = "ERROR ";
- break;
- case LogLevel::Critical:
- prefix = "CRITICAL";
- break;
- }
- std::cerr << std::string("(") + timestamp() + std::string(") [") + prefix + std::string("] ") + message << std::endl;
- }
-
- private:
- static std::string timestamp()
- {
- char date[32];
- time_t t = time(0);
-
- tm my_tm;
-
-#if defined(_MSC_VER) || defined(__MINGW32__)
-#ifdef CROW_USE_LOCALTIMEZONE
- localtime_s(&my_tm, &t);
-#else
- gmtime_s(&my_tm, &t);
-#endif
-#else
-#ifdef CROW_USE_LOCALTIMEZONE
- localtime_r(&t, &my_tm);
-#else
- gmtime_r(&t, &my_tm);
-#endif
-#endif
-
- size_t sz = strftime(date, sizeof(date), "%Y-%m-%d %H:%M:%S", &my_tm);
- return std::string(date, date + sz);
- }
- };
-
- class logger
- {
- public:
- logger(LogLevel level):
- level_(level)
- {}
- ~logger()
- {
-#ifdef CROW_ENABLE_LOGGING
- if (level_ >= get_current_log_level())
- {
- get_handler_ref()->log(stringstream_.str(), level_);
- }
-#endif
- }
-
- //
- template<typename T>
- logger& operator<<(T const& value)
- {
-#ifdef CROW_ENABLE_LOGGING
- if (level_ >= get_current_log_level())
- {
- stringstream_ << value;
- }
-#endif
- return *this;
- }
-
- //
- static void setLogLevel(LogLevel level) { get_log_level_ref() = level; }
-
- static void setHandler(ILogHandler* handler) { get_handler_ref() = handler; }
-
- static LogLevel get_current_log_level() { return get_log_level_ref(); }
-
- private:
- //
- static LogLevel& get_log_level_ref()
- {
- static LogLevel current_level = static_cast<LogLevel>(CROW_LOG_LEVEL);
- return current_level;
- }
- static ILogHandler*& get_handler_ref()
- {
- static CerrLogHandler default_handler;
- static ILogHandler* current_handler = &default_handler;
- return current_handler;
- }
-
- //
- std::ostringstream stringstream_;
- LogLevel level_;
- };
-} // namespace crow
-
-#define CROW_LOG_CRITICAL \
- if (crow::logger::get_current_log_level() <= crow::LogLevel::Critical) \
- crow::logger(crow::LogLevel::Critical)
-#define CROW_LOG_ERROR \
- if (crow::logger::get_current_log_level() <= crow::LogLevel::Error) \
- crow::logger(crow::LogLevel::Error)
-#define CROW_LOG_WARNING \
- if (crow::logger::get_current_log_level() <= crow::LogLevel::Warning) \
- crow::logger(crow::LogLevel::Warning)
-#define CROW_LOG_INFO \
- if (crow::logger::get_current_log_level() <= crow::LogLevel::Info) \
- crow::logger(crow::LogLevel::Info)
-#define CROW_LOG_DEBUG \
- if (crow::logger::get_current_log_level() <= crow::LogLevel::Debug) \
- crow::logger(crow::LogLevel::Debug)
-
-
-//#define CROW_JSON_NO_ERROR_CHECK
-//#define CROW_JSON_USE_MAP
-
-#include <string>
-#ifdef CROW_JSON_USE_MAP
-#include <map>
-#else
-#include <unordered_map>
-#endif
-#include <iostream>
-#include <algorithm>
-#include <memory>
-#include <vector>
-#include <cmath>
-#include <cfloat>
-
-
-using std::isinf;
-using std::isnan;
-
-
-namespace crow // NOTE: Already documented in "crow/app.h"
-{
- namespace mustache
- {
- class template_t;
- }
-
- namespace json
- {
- inline void escape(const std::string& str, std::string& ret)
- {
- ret.reserve(ret.size() + str.size() + str.size() / 4);
- for (auto c : str)
- {
- switch (c)
- {
- case '"': ret += "\\\""; break;
- case '\\': ret += "\\\\"; break;
- case '\n': ret += "\\n"; break;
- case '\b': ret += "\\b"; break;
- case '\f': ret += "\\f"; break;
- case '\r': ret += "\\r"; break;
- case '\t': ret += "\\t"; break;
- default:
- if (c >= 0 && c < 0x20)
- {
- ret += "\\u00";
- auto to_hex = [](char c) {
- c = c & 0xf;
- if (c < 10)
- return '0' + c;
- return 'a' + c - 10;
- };
- ret += to_hex(c / 16);
- ret += to_hex(c % 16);
- }
- else
- ret += c;
- break;
- }
- }
- }
- inline std::string escape(const std::string& str)
- {
- std::string ret;
- escape(str, ret);
- return ret;
- }
-
- enum class type : char
- {
- Null,
- False,
- True,
- Number,
- String,
- List,
- Object,
- Function
- };
-
- inline const char* get_type_str(type t)
- {
- switch (t)
- {
- case type::Number: return "Number";
- case type::False: return "False";
- case type::True: return "True";
- case type::List: return "List";
- case type::String: return "String";
- case type::Object: return "Object";
- case type::Function: return "Function";
- default: return "Unknown";
- }
- }
-
- enum class num_type : char
- {
- Signed_integer,
- Unsigned_integer,
- Floating_point,
- Null,
- Double_precision_floating_point
- };
-
- class rvalue;
- rvalue load(const char* data, size_t size);
-
- namespace detail
- {
- /// A read string implementation with comparison functionality.
- struct r_string
- {
- r_string(){};
- r_string(char* s, char* e):
- s_(s), e_(e){};
- ~r_string()
- {
- if (owned_)
- delete[] s_;
- }
-
- r_string(const r_string& r)
- {
- *this = r;
- }
-
- r_string(r_string&& r)
- {
- *this = r;
- }
-
- r_string& operator=(r_string&& r)
- {
- s_ = r.s_;
- e_ = r.e_;
- owned_ = r.owned_;
- if (r.owned_)
- r.owned_ = 0;
- return *this;
- }
-
- r_string& operator=(const r_string& r)
- {
- s_ = r.s_;
- e_ = r.e_;
- owned_ = 0;
- return *this;
- }
-
- operator std::string() const
- {
- return std::string(s_, e_);
- }
-
-
- const char* begin() const { return s_; }
- const char* end() const { return e_; }
- size_t size() const { return end() - begin(); }
-
- using iterator = const char*;
- using const_iterator = const char*;
-
- char* s_; ///< Start.
- mutable char* e_; ///< End.
- uint8_t owned_{0};
- friend std::ostream& operator<<(std::ostream& os, const r_string& s)
- {
- os << static_cast<std::string>(s);
- return os;
- }
-
- private:
- void force(char* s, uint32_t length)
- {
- s_ = s;
- e_ = s_ + length;
- owned_ = 1;
- }
- friend rvalue crow::json::load(const char* data, size_t size);
-
- friend bool operator==(const r_string& l, const r_string& r);
- friend bool operator==(const std::string& l, const r_string& r);
- friend bool operator==(const r_string& l, const std::string& r);
-
- template<typename T, typename U>
- inline static bool equals(const T& l, const U& r)
- {
- if (l.size() != r.size())
- return false;
-
- for (size_t i = 0; i < l.size(); i++)
- {
- if (*(l.begin() + i) != *(r.begin() + i))
- return false;
- }
-
- return true;
- }
- };
-
- inline bool operator<(const r_string& l, const r_string& r)
- {
- return std::lexicographical_compare(l.begin(), l.end(), r.begin(), r.end());
- }
-
- inline bool operator<(const r_string& l, const std::string& r)
- {
- return std::lexicographical_compare(l.begin(), l.end(), r.begin(), r.end());
- }
-
- inline bool operator<(const std::string& l, const r_string& r)
- {
- return std::lexicographical_compare(l.begin(), l.end(), r.begin(), r.end());
- }
-
- inline bool operator>(const r_string& l, const r_string& r)
- {
- return std::lexicographical_compare(l.begin(), l.end(), r.begin(), r.end());
- }
-
- inline bool operator>(const r_string& l, const std::string& r)
- {
- return std::lexicographical_compare(l.begin(), l.end(), r.begin(), r.end());
- }
-
- inline bool operator>(const std::string& l, const r_string& r)
- {
- return std::lexicographical_compare(l.begin(), l.end(), r.begin(), r.end());
- }
-
- inline bool operator==(const r_string& l, const r_string& r)
- {
- return r_string::equals(l, r);
- }
-
- inline bool operator==(const r_string& l, const std::string& r)
- {
- return r_string::equals(l, r);
- }
-
- inline bool operator==(const std::string& l, const r_string& r)
- {
- return r_string::equals(l, r);
- }
-
- inline bool operator!=(const r_string& l, const r_string& r)
- {
- return !(l == r);
- }
-
- inline bool operator!=(const r_string& l, const std::string& r)
- {
- return !(l == r);
- }
-
- inline bool operator!=(const std::string& l, const r_string& r)
- {
- return !(l == r);
- }
- } // namespace detail
-
- /// JSON read value.
-
- ///
- /// Value can mean any json value, including a JSON object.
- /// Read means this class is used to primarily read strings into a JSON value.
- class rvalue
- {
- static const int cached_bit = 2;
- static const int error_bit = 4;
-
- public:
- rvalue() noexcept:
- option_{error_bit}
- {
- }
- rvalue(type t) noexcept:
- lsize_{}, lremain_{}, t_{t}
- {
- }
- rvalue(type t, char* s, char* e) noexcept:
- start_{s}, end_{e}, t_{t}
- {
- determine_num_type();
- }
-
- rvalue(const rvalue& r):
- start_(r.start_), end_(r.end_), key_(r.key_), t_(r.t_), nt_(r.nt_), option_(r.option_)
- {
- copy_l(r);
- }
-
- rvalue(rvalue&& r) noexcept
- {
- *this = std::move(r);
- }
-
- rvalue& operator=(const rvalue& r)
- {
- start_ = r.start_;
- end_ = r.end_;
- key_ = r.key_;
- t_ = r.t_;
- nt_ = r.nt_;
- option_ = r.option_;
- copy_l(r);
- return *this;
- }
- rvalue& operator=(rvalue&& r) noexcept
- {
- start_ = r.start_;
- end_ = r.end_;
- key_ = std::move(r.key_);
- l_ = std::move(r.l_);
- lsize_ = r.lsize_;
- lremain_ = r.lremain_;
- t_ = r.t_;
- nt_ = r.nt_;
- option_ = r.option_;
- return *this;
- }
-
- explicit operator bool() const noexcept
- {
- return (option_ & error_bit) == 0;
- }
-
- explicit operator int64_t() const
- {
- return i();
- }
-
- explicit operator uint64_t() const
- {
- return u();
- }
-
- explicit operator int() const
- {
- return static_cast<int>(i());
- }
-
- /// Return any json value (not object or list) as a string.
- explicit operator std::string() const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() == type::Object || t() == type::List)
- throw std::runtime_error("json type container");
-#endif
- switch (t())
- {
- case type::String:
- return std::string(s());
- case type::Null:
- return std::string("null");
- case type::True:
- return std::string("true");
- case type::False:
- return std::string("false");
- default:
- return std::string(start_, end_ - start_);
- }
- }
-
- /// The type of the JSON value.
- type t() const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (option_ & error_bit)
- {
- throw std::runtime_error("invalid json object");
- }
-#endif
- return t_;
- }
-
- /// The number type of the JSON value.
- num_type nt() const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (option_ & error_bit)
- {
- throw std::runtime_error("invalid json object");
- }
-#endif
- return nt_;
- }
-
- /// The integer value.
- int64_t i() const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- switch (t())
- {
- case type::Number:
- case type::String:
- return utility::lexical_cast<int64_t>(start_, end_ - start_);
- default:
- const std::string msg = "expected number, got: " + std::string(get_type_str(t()));
- throw std::runtime_error(msg);
- }
-#endif
- return utility::lexical_cast<int64_t>(start_, end_ - start_);
- }
-
- /// The unsigned integer value.
- uint64_t u() const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- switch (t())
- {
- case type::Number:
- case type::String:
- return utility::lexical_cast<uint64_t>(start_, end_ - start_);
- default:
- throw std::runtime_error(std::string("expected number, got: ") + get_type_str(t()));
- }
-#endif
- return utility::lexical_cast<uint64_t>(start_, end_ - start_);
- }
-
- /// The double precision floating-point number value.
- double d() const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() != type::Number)
- throw std::runtime_error("value is not number");
-#endif
- return utility::lexical_cast<double>(start_, end_ - start_);
- }
-
- /// The boolean value.
- bool b() const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() != type::True && t() != type::False)
- throw std::runtime_error("value is not boolean");
-#endif
- return t() == type::True;
- }
-
- /// The string value.
- detail::r_string s() const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() != type::String)
- throw std::runtime_error("value is not string");
-#endif
- unescape();
- return detail::r_string{start_, end_};
- }
-
- /// The list or object value
- std::vector<rvalue> lo()
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() != type::Object && t() != type::List)
- throw std::runtime_error("value is not a container");
-#endif
- std::vector<rvalue> ret;
- ret.reserve(lsize_);
- for (uint32_t i = 0; i < lsize_; i++)
- {
- ret.emplace_back(l_[i]);
- }
- return ret;
- }
-
- /// Convert escaped string character to their original form ("\\n" -> '\n').
- void unescape() const
- {
- if (*(start_ - 1))
- {
- char* head = start_;
- char* tail = start_;
- while (head != end_)
- {
- if (*head == '\\')
- {
- switch (*++head)
- {
- case '"': *tail++ = '"'; break;
- case '\\': *tail++ = '\\'; break;
- case '/': *tail++ = '/'; break;
- case 'b': *tail++ = '\b'; break;
- case 'f': *tail++ = '\f'; break;
- case 'n': *tail++ = '\n'; break;
- case 'r': *tail++ = '\r'; break;
- case 't': *tail++ = '\t'; break;
- case 'u':
- {
- auto from_hex = [](char c) {
- if (c >= 'a')
- return c - 'a' + 10;
- if (c >= 'A')
- return c - 'A' + 10;
- return c - '0';
- };
- unsigned int code =
- (from_hex(head[1]) << 12) +
- (from_hex(head[2]) << 8) +
- (from_hex(head[3]) << 4) +
- from_hex(head[4]);
- if (code >= 0x800)
- {
- *tail++ = 0xE0 | (code >> 12);
- *tail++ = 0x80 | ((code >> 6) & 0x3F);
- *tail++ = 0x80 | (code & 0x3F);
- }
- else if (code >= 0x80)
- {
- *tail++ = 0xC0 | (code >> 6);
- *tail++ = 0x80 | (code & 0x3F);
- }
- else
- {
- *tail++ = code;
- }
- head += 4;
- }
- break;
- }
- }
- else
- *tail++ = *head;
- head++;
- }
- end_ = tail;
- *end_ = 0;
- *(start_ - 1) = 0;
- }
- }
-
- /// Check if the json object has the passed string as a key.
- bool has(const char* str) const
- {
- return has(std::string(str));
- }
-
- bool has(const std::string& str) const
- {
- struct Pred
- {
- bool operator()(const rvalue& l, const rvalue& r) const
- {
- return l.key_ < r.key_;
- };
- bool operator()(const rvalue& l, const std::string& r) const
- {
- return l.key_ < r;
- };
- bool operator()(const std::string& l, const rvalue& r) const
- {
- return l < r.key_;
- };
- };
- if (!is_cached())
- {
- std::sort(begin(), end(), Pred());
- set_cached();
- }
- auto it = lower_bound(begin(), end(), str, Pred());
- return it != end() && it->key_ == str;
- }
-
- int count(const std::string& str)
- {
- return has(str) ? 1 : 0;
- }
-
- rvalue* begin() const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() != type::Object && t() != type::List)
- throw std::runtime_error("value is not a container");
-#endif
- return l_.get();
- }
- rvalue* end() const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() != type::Object && t() != type::List)
- throw std::runtime_error("value is not a container");
-#endif
- return l_.get() + lsize_;
- }
-
- const detail::r_string& key() const
- {
- return key_;
- }
-
- size_t size() const
- {
- if (t() == type::String)
- return s().size();
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() != type::Object && t() != type::List)
- throw std::runtime_error("value is not a container");
-#endif
- return lsize_;
- }
-
- const rvalue& operator[](int index) const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() != type::List)
- throw std::runtime_error("value is not a list");
- if (index >= static_cast<int>(lsize_) || index < 0)
- throw std::runtime_error("list out of bound");
-#endif
- return l_[index];
- }
-
- const rvalue& operator[](size_t index) const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() != type::List)
- throw std::runtime_error("value is not a list");
- if (index >= lsize_)
- throw std::runtime_error("list out of bound");
-#endif
- return l_[index];
- }
-
- const rvalue& operator[](const char* str) const
- {
- return this->operator[](std::string(str));
- }
-
- const rvalue& operator[](const std::string& str) const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() != type::Object)
- throw std::runtime_error("value is not an object");
-#endif
- struct Pred
- {
- bool operator()(const rvalue& l, const rvalue& r) const
- {
- return l.key_ < r.key_;
- };
- bool operator()(const rvalue& l, const std::string& r) const
- {
- return l.key_ < r;
- };
- bool operator()(const std::string& l, const rvalue& r) const
- {
- return l < r.key_;
- };
- };
- if (!is_cached())
- {
- std::sort(begin(), end(), Pred());
- set_cached();
- }
- auto it = lower_bound(begin(), end(), str, Pred());
- if (it != end() && it->key_ == str)
- return *it;
-#ifndef CROW_JSON_NO_ERROR_CHECK
- throw std::runtime_error("cannot find key");
-#else
- static rvalue nullValue;
- return nullValue;
-#endif
- }
-
- void set_error()
- {
- option_ |= error_bit;
- }
-
- bool error() const
- {
- return (option_ & error_bit) != 0;
- }
-
- std::vector<std::string> keys() const
- {
-#ifndef CROW_JSON_NO_ERROR_CHECK
- if (t() != type::Object)
- throw std::runtime_error("value is not an object");
-#endif
- std::vector<std::string> ret;
- ret.reserve(lsize_);
- for (uint32_t i = 0; i < lsize_; i++)
- {
- ret.emplace_back(std::string(l_[i].key()));
- }
- return ret;
- }
-
- private:
- bool is_cached() const
- {
- return (option_ & cached_bit) != 0;
- }
- void set_cached() const
- {
- option_ |= cached_bit;
- }
- void copy_l(const rvalue& r)
- {
- if (r.t() != type::Object && r.t() != type::List)
- return;
- lsize_ = r.lsize_;
- lremain_ = 0;
- l_.reset(new rvalue[lsize_]);
- std::copy(r.begin(), r.end(), begin());
- }
-
- void emplace_back(rvalue&& v)
- {
- if (!lremain_)
- {
- int new_size = lsize_ + lsize_;
- if (new_size - lsize_ > 60000)
- new_size = lsize_ + 60000;
- if (new_size < 4)
- new_size = 4;
- rvalue* p = new rvalue[new_size];
- rvalue* p2 = p;
- for (auto& x : *this)
- *p2++ = std::move(x);
- l_.reset(p);
- lremain_ = new_size - lsize_;
- }
- l_[lsize_++] = std::move(v);
- lremain_--;
- }
-
- /// Determines num_type from the string.
- void determine_num_type()
- {
- if (t_ != type::Number)
- {
- nt_ = num_type::Null;
- return;
- }
-
- const std::size_t len = end_ - start_;
- const bool has_minus = std::memchr(start_, '-', len) != nullptr;
- const bool has_e = std::memchr(start_, 'e', len) != nullptr || std::memchr(start_, 'E', len) != nullptr;
- const bool has_dec_sep = std::memchr(start_, '.', len) != nullptr;
- if (has_dec_sep || has_e)
- nt_ = num_type::Floating_point;
- else if (has_minus)
- nt_ = num_type::Signed_integer;
- else
- nt_ = num_type::Unsigned_integer;
- }
-
- mutable char* start_;
- mutable char* end_;
- detail::r_string key_;
- std::unique_ptr<rvalue[]> l_;
- uint32_t lsize_;
- uint16_t lremain_;
- type t_;
- num_type nt_{num_type::Null};
- mutable uint8_t option_{0};
-
- friend rvalue load_nocopy_internal(char* data, size_t size);
- friend rvalue load(const char* data, size_t size);
- friend std::ostream& operator<<(std::ostream& os, const rvalue& r)
- {
- switch (r.t_)
- {
-
- case type::Null: os << "null"; break;
- case type::False: os << "false"; break;
- case type::True: os << "true"; break;
- case type::Number:
- {
- switch (r.nt())
- {
- case num_type::Floating_point: os << r.d(); break;
- case num_type::Double_precision_floating_point: os << r.d(); break;
- case num_type::Signed_integer: os << r.i(); break;
- case num_type::Unsigned_integer: os << r.u(); break;
- case num_type::Null: throw std::runtime_error("Number with num_type Null");
- }
- }
- break;
- case type::String: os << '"' << r.s() << '"'; break;
- case type::List:
- {
- os << '[';
- bool first = true;
- for (auto& x : r)
- {
- if (!first)
- os << ',';
- first = false;
- os << x;
- }
- os << ']';
- }
- break;
- case type::Object:
- {
- os << '{';
- bool first = true;
- for (auto& x : r)
- {
- if (!first)
- os << ',';
- os << '"' << escape(x.key_) << "\":";
- first = false;
- os << x;
- }
- os << '}';
- }
- break;
- case type::Function: os << "custom function"; break;
- }
- return os;
- }
- };
- namespace detail
- {
- }
-
- inline bool operator==(const rvalue& l, const std::string& r)
- {
- return l.s() == r;
- }
-
- inline bool operator==(const std::string& l, const rvalue& r)
- {
- return l == r.s();
- }
-
- inline bool operator!=(const rvalue& l, const std::string& r)
- {
- return l.s() != r;
- }
-
- inline bool operator!=(const std::string& l, const rvalue& r)
- {
- return l != r.s();
- }
-
- inline bool operator==(const rvalue& l, double r)
- {
- return l.d() == r;
- }
-
- inline bool operator==(double l, const rvalue& r)
- {
- return l == r.d();
- }
-
- inline bool operator!=(const rvalue& l, double r)
- {
- return l.d() != r;
- }
-
- inline bool operator!=(double l, const rvalue& r)
- {
- return l != r.d();
- }
-
-
- inline rvalue load_nocopy_internal(char* data, size_t size)
- {
- // Defend against excessive recursion
- static constexpr unsigned max_depth = 10000;
-
- //static const char* escaped = "\"\\/\b\f\n\r\t";
- struct Parser
- {
- Parser(char* data, size_t /*size*/):
- data(data)
- {
- }
-
- bool consume(char c)
- {
- if (CROW_UNLIKELY(*data != c))
- return false;
- data++;
- return true;
- }
-
- void ws_skip()
- {
- while (*data == ' ' || *data == '\t' || *data == '\r' || *data == '\n')
- ++data;
- };
-
- rvalue decode_string()
- {
- if (CROW_UNLIKELY(!consume('"')))
- return {};
- char* start = data;
- uint8_t has_escaping = 0;
- while (1)
- {
- if (CROW_LIKELY(*data != '"' && *data != '\\' && *data != '\0'))
- {
- data++;
- }
- else if (*data == '"')
- {
- *data = 0;
- *(start - 1) = has_escaping;
- data++;
- return {type::String, start, data - 1};
- }
- else if (*data == '\\')
- {
- has_escaping = 1;
- data++;
- switch (*data)
- {
- case 'u':
- {
- auto check = [](char c) {
- return ('0' <= c && c <= '9') ||
- ('a' <= c && c <= 'f') ||
- ('A' <= c && c <= 'F');
- };
- if (!(check(*(data + 1)) &&
- check(*(data + 2)) &&
- check(*(data + 3)) &&
- check(*(data + 4))))
- return {};
- }
- data += 5;
- break;
- case '"':
- case '\\':
- case '/':
- case 'b':
- case 'f':
- case 'n':
- case 'r':
- case 't':
- data++;
- break;
- default:
- return {};
- }
- }
- else
- return {};
- }
- return {};
- }
-
- rvalue decode_list(unsigned depth)
- {
- rvalue ret(type::List);
- if (CROW_UNLIKELY(!consume('[')) || CROW_UNLIKELY(depth > max_depth))
- {
- ret.set_error();
- return ret;
- }
- ws_skip();
- if (CROW_UNLIKELY(*data == ']'))
- {
- data++;
- return ret;
- }
-
- while (1)
- {
- auto v = decode_value(depth + 1);
- if (CROW_UNLIKELY(!v))
- {
- ret.set_error();
- break;
- }
- ws_skip();
- ret.emplace_back(std::move(v));
- if (*data == ']')
- {
- data++;
- break;
- }
- if (CROW_UNLIKELY(!consume(',')))
- {
- ret.set_error();
- break;
- }
- ws_skip();
- }
- return ret;
- }
-
- rvalue decode_number()
- {
- char* start = data;
-
- enum NumberParsingState
- {
- Minus,
- AfterMinus,
- ZeroFirst,
- Digits,
- DigitsAfterPoints,
- E,
- DigitsAfterE,
- Invalid,
- } state{Minus};
- while (CROW_LIKELY(state != Invalid))
- {
- switch (*data)
- {
- case '0':
- state = static_cast<NumberParsingState>("\2\2\7\3\4\6\6"[state]);
- /*if (state == NumberParsingState::Minus || state == NumberParsingState::AfterMinus)
- {
- state = NumberParsingState::ZeroFirst;
- }
- else if (state == NumberParsingState::Digits ||
- state == NumberParsingState::DigitsAfterE ||
- state == NumberParsingState::DigitsAfterPoints)
- {
- // ok; pass
- }
- else if (state == NumberParsingState::E)
- {
- state = NumberParsingState::DigitsAfterE;
- }
- else
- return {};*/
- break;
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- state = static_cast<NumberParsingState>("\3\3\7\3\4\6\6"[state]);
- while (*(data + 1) >= '0' && *(data + 1) <= '9')
- data++;
- /*if (state == NumberParsingState::Minus || state == NumberParsingState::AfterMinus)
- {
- state = NumberParsingState::Digits;
- }
- else if (state == NumberParsingState::Digits ||
- state == NumberParsingState::DigitsAfterE ||
- state == NumberParsingState::DigitsAfterPoints)
- {
- // ok; pass
- }
- else if (state == NumberParsingState::E)
- {
- state = NumberParsingState::DigitsAfterE;
- }
- else
- return {};*/
- break;
- case '.':
- state = static_cast<NumberParsingState>("\7\7\4\4\7\7\7"[state]);
- /*
- if (state == NumberParsingState::Digits || state == NumberParsingState::ZeroFirst)
- {
- state = NumberParsingState::DigitsAfterPoints;
- }
- else
- return {};
- */
- break;
- case '-':
- state = static_cast<NumberParsingState>("\1\7\7\7\7\6\7"[state]);
- /*if (state == NumberParsingState::Minus)
- {
- state = NumberParsingState::AfterMinus;
- }
- else if (state == NumberParsingState::E)
- {
- state = NumberParsingState::DigitsAfterE;
- }
- else
- return {};*/
- break;
- case '+':
- state = static_cast<NumberParsingState>("\7\7\7\7\7\6\7"[state]);
- /*if (state == NumberParsingState::E)
- {
- state = NumberParsingState::DigitsAfterE;
- }
- else
- return {};*/
- break;
- case 'e':
- case 'E':
- state = static_cast<NumberParsingState>("\7\7\7\5\5\7\7"[state]);
- /*if (state == NumberParsingState::Digits ||
- state == NumberParsingState::DigitsAfterPoints)
- {
- state = NumberParsingState::E;
- }
- else
- return {};*/
- break;
- default:
- if (CROW_LIKELY(state == NumberParsingState::ZeroFirst ||
- state == NumberParsingState::Digits ||
- state == NumberParsingState::DigitsAfterPoints ||
- state == NumberParsingState::DigitsAfterE))
- return {type::Number, start, data};
- else
- return {};
- }
- data++;
- }
-
- return {};
- }
-
-
- rvalue decode_value(unsigned depth)
- {
- switch (*data)
- {
- case '[':
- return decode_list(depth + 1);
- case '{':
- return decode_object(depth + 1);
- case '"':
- return decode_string();
- case 't':
- if ( //e-data >= 4 &&
- data[1] == 'r' &&
- data[2] == 'u' &&
- data[3] == 'e')
- {
- data += 4;
- return {type::True};
- }
- else
- return {};
- case 'f':
- if ( //e-data >= 5 &&
- data[1] == 'a' &&
- data[2] == 'l' &&
- data[3] == 's' &&
- data[4] == 'e')
- {
- data += 5;
- return {type::False};
- }
- else
- return {};
- case 'n':
- if ( //e-data >= 4 &&
- data[1] == 'u' &&
- data[2] == 'l' &&
- data[3] == 'l')
- {
- data += 4;
- return {type::Null};
- }
- else
- return {};
- //case '1': case '2': case '3':
- //case '4': case '5': case '6':
- //case '7': case '8': case '9':
- //case '0': case '-':
- default:
- return decode_number();
- }
- return {};
- }
-
- rvalue decode_object(unsigned depth)
- {
- rvalue ret(type::Object);
- if (CROW_UNLIKELY(!consume('{')) || CROW_UNLIKELY(depth > max_depth))
- {
- ret.set_error();
- return ret;
- }
-
- ws_skip();
-
- if (CROW_UNLIKELY(*data == '}'))
- {
- data++;
- return ret;
- }
-
- while (1)
- {
- auto t = decode_string();
- if (CROW_UNLIKELY(!t))
- {
- ret.set_error();
- break;
- }
-
- ws_skip();
- if (CROW_UNLIKELY(!consume(':')))
- {
- ret.set_error();
- break;
- }
-
- // TODO(ipkn) caching key to speed up (flyweight?)
- // I have no idea how flyweight could apply here, but maybe some speedup can happen if we stopped checking type since decode_string returns a string anyway
- auto key = t.s();
-
- ws_skip();
- auto v = decode_value(depth + 1);
- if (CROW_UNLIKELY(!v))
- {
- ret.set_error();
- break;
- }
- ws_skip();
-
- v.key_ = std::move(key);
- ret.emplace_back(std::move(v));
- if (CROW_UNLIKELY(*data == '}'))
- {
- data++;
- break;
- }
- if (CROW_UNLIKELY(!consume(',')))
- {
- ret.set_error();
- break;
- }
- ws_skip();
- }
- return ret;
- }
-
- rvalue parse()
- {
- ws_skip();
- auto ret = decode_value(0); // or decode object?
- ws_skip();
- if (ret && *data != '\0')
- ret.set_error();
- return ret;
- }
-
- char* data;
- };
- return Parser(data, size).parse();
- }
- inline rvalue load(const char* data, size_t size)
- {
- char* s = new char[size + 1];
- memcpy(s, data, size);
- s[size] = 0;
- auto ret = load_nocopy_internal(s, size);
- if (ret)
- ret.key_.force(s, size);
- else
- delete[] s;
- return ret;
- }
-
- inline rvalue load(const char* data)
- {
- return load(data, strlen(data));
- }
-
- inline rvalue load(const std::string& str)
- {
- return load(str.data(), str.size());
- }
-
- struct wvalue_reader;
-
- /// JSON write value.
-
- ///
- /// Value can mean any json value, including a JSON object.<br>
- /// Write means this class is used to primarily assemble JSON objects using keys and values and export those into a string.
- class wvalue : public returnable
- {
- friend class crow::mustache::template_t;
- friend struct wvalue_reader;
-
- public:
- using object =
-#ifdef CROW_JSON_USE_MAP
- std::map<std::string, wvalue>;
-#else
- std::unordered_map<std::string, wvalue>;
-#endif
-
- using list = std::vector<wvalue>;
-
- type t() const { return t_; }
-
- /// Create an empty json value (outputs "{}" instead of a "null" string)
- static crow::json::wvalue empty_object() { return crow::json::wvalue::object(); }
-
- private:
- type t_{type::Null}; ///< The type of the value.
- num_type nt{num_type::Null}; ///< The specific type of the number if \ref t_ is a number.
- union number
- {
- double d;
- int64_t si;
- uint64_t ui;
-
- public:
- constexpr number() noexcept:
- ui() {} /* default constructor initializes unsigned integer. */
- constexpr number(std::uint64_t value) noexcept:
- ui(value) {}
- constexpr number(std::int64_t value) noexcept:
- si(value) {}
- explicit constexpr number(double value) noexcept:
- d(value) {}
- explicit constexpr number(float value) noexcept:
- d(value) {}
- } num; ///< Value if type is a number.
- std::string s; ///< Value if type is a string.
- std::unique_ptr<list> l; ///< Value if type is a list.
- std::unique_ptr<object> o; ///< Value if type is a JSON object.
- std::function<std::string(std::string&)> f; ///< Value if type is a function (C++ lambda)
-
- public:
- wvalue():
- returnable("application/json") {}
-
- wvalue(std::nullptr_t):
- returnable("application/json"), t_(type::Null) {}
-
- wvalue(bool value):
- returnable("application/json"), t_(value ? type::True : type::False) {}
-
- wvalue(std::uint8_t value):
- returnable("application/json"), t_(type::Number), nt(num_type::Unsigned_integer), num(static_cast<std::uint64_t>(value)) {}
- wvalue(std::uint16_t value):
- returnable("application/json"), t_(type::Number), nt(num_type::Unsigned_integer), num(static_cast<std::uint64_t>(value)) {}
- wvalue(std::uint32_t value):
- returnable("application/json"), t_(type::Number), nt(num_type::Unsigned_integer), num(static_cast<std::uint64_t>(value)) {}
- wvalue(std::uint64_t value):
- returnable("application/json"), t_(type::Number), nt(num_type::Unsigned_integer), num(static_cast<std::uint64_t>(value)) {}
-
- wvalue(std::int8_t value):
- returnable("application/json"), t_(type::Number), nt(num_type::Signed_integer), num(static_cast<std::int64_t>(value)) {}
- wvalue(std::int16_t value):
- returnable("application/json"), t_(type::Number), nt(num_type::Signed_integer), num(static_cast<std::int64_t>(value)) {}
- wvalue(std::int32_t value):
- returnable("application/json"), t_(type::Number), nt(num_type::Signed_integer), num(static_cast<std::int64_t>(value)) {}
- wvalue(std::int64_t value):
- returnable("application/json"), t_(type::Number), nt(num_type::Signed_integer), num(static_cast<std::int64_t>(value)) {}
-
- wvalue(float value):
- returnable("application/json"), t_(type::Number), nt(num_type::Floating_point), num(static_cast<double>(value)) {}
- wvalue(double value):
- returnable("application/json"), t_(type::Number), nt(num_type::Double_precision_floating_point), num(static_cast<double>(value)) {}
-
- wvalue(char const* value):
- returnable("application/json"), t_(type::String), s(value) {}
-
- wvalue(std::string const& value):
- returnable("application/json"), t_(type::String), s(value) {}
- wvalue(std::string&& value):
- returnable("application/json"), t_(type::String), s(std::move(value)) {}
-
- wvalue(std::initializer_list<std::pair<std::string const, wvalue>> initializer_list):
- returnable("application/json"), t_(type::Object), o(new object(initializer_list)) {}
-
- wvalue(object const& value):
- returnable("application/json"), t_(type::Object), o(new object(value)) {}
- wvalue(object&& value):
- returnable("application/json"), t_(type::Object), o(new object(std::move(value))) {}
-
- wvalue(const list& r):
- returnable("application/json")
- {
- t_ = type::List;
- l = std::unique_ptr<list>(new list{});
- l->reserve(r.size());
- for (auto it = r.begin(); it != r.end(); ++it)
- l->emplace_back(*it);
- }
- wvalue(list& r):
- returnable("application/json")
- {
- t_ = type::List;
- l = std::unique_ptr<list>(new list{});
- l->reserve(r.size());
- for (auto it = r.begin(); it != r.end(); ++it)
- l->emplace_back(*it);
- }
-
- /// Create a write value from a read value (useful for editing JSON strings).
- wvalue(const rvalue& r):
- returnable("application/json")
- {
- t_ = r.t();
- switch (r.t())
- {
- case type::Null:
- case type::False:
- case type::True:
- case type::Function:
- return;
- case type::Number:
- nt = r.nt();
- if (nt == num_type::Floating_point || nt == num_type::Double_precision_floating_point)
- num.d = r.d();
- else if (nt == num_type::Signed_integer)
- num.si = r.i();
- else
- num.ui = r.u();
- return;
- case type::String:
- s = r.s();
- return;
- case type::List:
- l = std::unique_ptr<list>(new list{});
- l->reserve(r.size());
- for (auto it = r.begin(); it != r.end(); ++it)
- l->emplace_back(*it);
- return;
- case type::Object:
- o = std::unique_ptr<object>(new object{});
- for (auto it = r.begin(); it != r.end(); ++it)
- o->emplace(it->key(), *it);
- return;
- }
- }
-
- wvalue(const wvalue& r):
- returnable("application/json")
- {
- t_ = r.t();
- switch (r.t())
- {
- case type::Null:
- case type::False:
- case type::True:
- return;
- case type::Number:
- nt = r.nt;
- if (nt == num_type::Floating_point || nt == num_type::Double_precision_floating_point)
- num.d = r.num.d;
- else if (nt == num_type::Signed_integer)
- num.si = r.num.si;
- else
- num.ui = r.num.ui;
- return;
- case type::String:
- s = r.s;
- return;
- case type::List:
- l = std::unique_ptr<list>(new list{});
- l->reserve(r.size());
- for (auto it = r.l->begin(); it != r.l->end(); ++it)
- l->emplace_back(*it);
- return;
- case type::Object:
- o = std::unique_ptr<object>(new object{});
- o->insert(r.o->begin(), r.o->end());
- return;
- case type::Function:
- f = r.f;
- }
- }
-
- wvalue(wvalue&& r):
- returnable("application/json")
- {
- *this = std::move(r);
- }
-
- wvalue& operator=(wvalue&& r)
- {
- t_ = r.t_;
- nt = r.nt;
- num = r.num;
- s = std::move(r.s);
- l = std::move(r.l);
- o = std::move(r.o);
- return *this;
- }
-
- /// Used for compatibility, same as \ref reset()
- void clear()
- {
- reset();
- }
-
- void reset()
- {
- t_ = type::Null;
- l.reset();
- o.reset();
- }
-
- wvalue& operator=(std::nullptr_t)
- {
- reset();
- return *this;
- }
- wvalue& operator=(bool value)
- {
- reset();
- if (value)
- t_ = type::True;
- else
- t_ = type::False;
- return *this;
- }
-
- wvalue& operator=(float value)
- {
- reset();
- t_ = type::Number;
- num.d = value;
- nt = num_type::Floating_point;
- return *this;
- }
-
- wvalue& operator=(double value)
- {
- reset();
- t_ = type::Number;
- num.d = value;
- nt = num_type::Double_precision_floating_point;
- return *this;
- }
-
- wvalue& operator=(unsigned short value)
- {
- reset();
- t_ = type::Number;
- num.ui = value;
- nt = num_type::Unsigned_integer;
- return *this;
- }
-
- wvalue& operator=(short value)
- {
- reset();
- t_ = type::Number;
- num.si = value;
- nt = num_type::Signed_integer;
- return *this;
- }
-
- wvalue& operator=(long long value)
- {
- reset();
- t_ = type::Number;
- num.si = value;
- nt = num_type::Signed_integer;
- return *this;
- }
-
- wvalue& operator=(long value)
- {
- reset();
- t_ = type::Number;
- num.si = value;
- nt = num_type::Signed_integer;
- return *this;
- }
-
- wvalue& operator=(int value)
- {
- reset();
- t_ = type::Number;
- num.si = value;
- nt = num_type::Signed_integer;
- return *this;
- }
-
- wvalue& operator=(unsigned long long value)
- {
- reset();
- t_ = type::Number;
- num.ui = value;
- nt = num_type::Unsigned_integer;
- return *this;
- }
-
- wvalue& operator=(unsigned long value)
- {
- reset();
- t_ = type::Number;
- num.ui = value;
- nt = num_type::Unsigned_integer;
- return *this;
- }
-
- wvalue& operator=(unsigned int value)
- {
- reset();
- t_ = type::Number;
- num.ui = value;
- nt = num_type::Unsigned_integer;
- return *this;
- }
-
- wvalue& operator=(const char* str)
- {
- reset();
- t_ = type::String;
- s = str;
- return *this;
- }
-
- wvalue& operator=(const std::string& str)
- {
- reset();
- t_ = type::String;
- s = str;
- return *this;
- }
-
- wvalue& operator=(list&& v)
- {
- if (t_ != type::List)
- reset();
- t_ = type::List;
- if (!l)
- l = std::unique_ptr<list>(new list{});
- l->clear();
- l->resize(v.size());
- size_t idx = 0;
- for (auto& x : v)
- {
- (*l)[idx++] = std::move(x);
- }
- return *this;
- }
-
- template<typename T>
- wvalue& operator=(const std::vector<T>& v)
- {
- if (t_ != type::List)
- reset();
- t_ = type::List;
- if (!l)
- l = std::unique_ptr<list>(new list{});
- l->clear();
- l->resize(v.size());
- size_t idx = 0;
- for (auto& x : v)
- {
- (*l)[idx++] = x;
- }
- return *this;
- }
-
- wvalue& operator=(std::initializer_list<std::pair<std::string const, wvalue>> initializer_list)
- {
- if (t_ != type::Object)
- {
- reset();
- t_ = type::Object;
- o = std::unique_ptr<object>(new object(initializer_list));
- }
- else
- {
-#if defined(__APPLE__) || defined(__MACH__) || defined(__FreeBSD__) || defined(__ANDROID__) || defined(_LIBCPP_VERSION)
- o = std::unique_ptr<object>(new object(initializer_list));
-#else
- (*o) = initializer_list;
-#endif
- }
- return *this;
- }
-
- wvalue& operator=(object const& value)
- {
- if (t_ != type::Object)
- {
- reset();
- t_ = type::Object;
- o = std::unique_ptr<object>(new object(value));
- }
- else
- {
-#if defined(__APPLE__) || defined(__MACH__) || defined(__FreeBSD__) || defined(__ANDROID__) || defined(_LIBCPP_VERSION)
- o = std::unique_ptr<object>(new object(value));
-#else
- (*o) = value;
-#endif
- }
- return *this;
- }
-
- wvalue& operator=(object&& value)
- {
- if (t_ != type::Object)
- {
- reset();
- t_ = type::Object;
- o = std::unique_ptr<object>(new object(std::move(value)));
- }
- else
- {
- (*o) = std::move(value);
- }
- return *this;
- }
-
- wvalue& operator=(std::function<std::string(std::string&)>&& func)
- {
- reset();
- t_ = type::Function;
- f = std::move(func);
- return *this;
- }
-
- wvalue& operator[](unsigned index)
- {
- if (t_ != type::List)
- reset();
- t_ = type::List;
- if (!l)
- l = std::unique_ptr<list>(new list{});
- if (l->size() < index + 1)
- l->resize(index + 1);
- return (*l)[index];
- }
-
- const wvalue& operator[](unsigned index) const
- {
- return const_cast<wvalue*>(this)->operator[](index);
- }
-
- int count(const std::string& str) const
- {
- if (t_ != type::Object)
- return 0;
- if (!o)
- return 0;
- return o->count(str);
- }
-
- wvalue& operator[](const std::string& str)
- {
- if (t_ != type::Object)
- reset();
- t_ = type::Object;
- if (!o)
- o = std::unique_ptr<object>(new object{});
- return (*o)[str];
- }
-
- const wvalue& operator[](const std::string& str) const
- {
- return const_cast<wvalue*>(this)->operator[](str);
- }
-
- std::vector<std::string> keys() const
- {
- if (t_ != type::Object)
- return {};
- std::vector<std::string> result;
- for (auto& kv : *o)
- {
- result.push_back(kv.first);
- }
- return result;
- }
-
- std::string execute(std::string txt = "") const //Not using reference because it cannot be used with a default rvalue
- {
- if (t_ != type::Function)
- return "";
- return f(txt);
- }
-
- /// If the wvalue is a list, it returns the length of the list, otherwise it returns 1.
- std::size_t size() const
- {
- if (t_ != type::List)
- return 1;
- return l->size();
- }
-
- /// Returns an estimated size of the value in bytes.
- size_t estimate_length() const
- {
- switch (t_)
- {
- case type::Null: return 4;
- case type::False: return 5;
- case type::True: return 4;
- case type::Number: return 30;
- case type::String: return 2 + s.size() + s.size() / 2;
- case type::List:
- {
- size_t sum{};
- if (l)
- {
- for (auto& x : *l)
- {
- sum += 1;
- sum += x.estimate_length();
- }
- }
- return sum + 2;
- }
- case type::Object:
- {
- size_t sum{};
- if (o)
- {
- for (auto& kv : *o)
- {
- sum += 2;
- sum += 2 + kv.first.size() + kv.first.size() / 2;
- sum += kv.second.estimate_length();
- }
- }
- return sum + 2;
- }
- case type::Function:
- return 0;
- }
- return 1;
- }
-
- private:
- inline void dump_string(const std::string& str, std::string& out) const
- {
- out.push_back('"');
- escape(str, out);
- out.push_back('"');
- }
-
- inline void dump_indentation_part(std::string& out, const int indent, const char separator, const int indent_level) const
- {
- out.push_back('\n');
- out.append(indent_level * indent, separator);
- }
-
-
- inline void dump_internal(const wvalue& v, std::string& out, const int indent, const char separator, const int indent_level = 0) const
- {
- switch (v.t_)
- {
- case type::Null: out += "null"; break;
- case type::False: out += "false"; break;
- case type::True: out += "true"; break;
- case type::Number:
- {
- if (v.nt == num_type::Floating_point || v.nt == num_type::Double_precision_floating_point)
- {
- if (isnan(v.num.d) || isinf(v.num.d))
- {
- out += "null";
- CROW_LOG_WARNING << "Invalid JSON value detected (" << v.num.d << "), value set to null";
- break;
- }
- enum
- {
- start,
- decp, // Decimal point
- zero
- } f_state;
- char outbuf[128];
- if (v.nt == num_type::Double_precision_floating_point)
- {
-#ifdef _MSC_VER
- sprintf_s(outbuf, sizeof(outbuf), "%.*g", DECIMAL_DIG, v.num.d);
-#else
- snprintf(outbuf, sizeof(outbuf), "%.*g", DECIMAL_DIG, v.num.d);
-#endif
- }
- else
- {
-#ifdef _MSC_VER
- sprintf_s(outbuf, sizeof(outbuf), "%f", v.num.d);
-#else
- snprintf(outbuf, sizeof(outbuf), "%f", v.num.d);
-#endif
- }
- char *p = &outbuf[0], *o = nullptr; // o is the position of the first trailing 0
- f_state = start;
- while (*p != '\0')
- {
- //std::cout << *p << std::endl;
- char ch = *p;
- switch (f_state)
- {
- case start: // Loop and lookahead until a decimal point is found
- if (ch == '.')
- {
- char fch = *(p + 1);
- // if the first character is 0, leave it be (this is so that "1.00000" becomes "1.0" and not "1.")
- if (fch != '\0' && fch == '0') p++;
- f_state = decp;
- }
- p++;
- break;
- case decp: // Loop until a 0 is found, if found, record its position
- if (ch == '0')
- {
- f_state = zero;
- o = p;
- }
- p++;
- break;
- case zero: // if a non 0 is found (e.g. 1.00004) remove the earlier recorded 0 position and look for more trailing 0s
- if (ch != '0')
- {
- o = nullptr;
- f_state = decp;
- }
- p++;
- break;
- }
- }
- if (o != nullptr) // if any trailing 0s are found, terminate the string where they begin
- *o = '\0';
- out += outbuf;
- }
- else if (v.nt == num_type::Signed_integer)
- {
- out += std::to_string(v.num.si);
- }
- else
- {
- out += std::to_string(v.num.ui);
- }
- }
- break;
- case type::String: dump_string(v.s, out); break;
- case type::List:
- {
- out.push_back('[');
-
- if (indent >= 0)
- {
- dump_indentation_part(out, indent, separator, indent_level + 1);
- }
-
- if (v.l)
- {
- bool first = true;
- for (auto& x : *v.l)
- {
- if (!first)
- {
- out.push_back(',');
-
- if (indent >= 0)
- {
- dump_indentation_part(out, indent, separator, indent_level + 1);
- }
- }
- first = false;
- dump_internal(x, out, indent, separator, indent_level + 1);
- }
- }
-
- if (indent >= 0)
- {
- dump_indentation_part(out, indent, separator, indent_level);
- }
-
- out.push_back(']');
- }
- break;
- case type::Object:
- {
- out.push_back('{');
-
- if (indent >= 0)
- {
- dump_indentation_part(out, indent, separator, indent_level + 1);
- }
-
- if (v.o)
- {
- bool first = true;
- for (auto& kv : *v.o)
- {
- if (!first)
- {
- out.push_back(',');
- if (indent >= 0)
- {
- dump_indentation_part(out, indent, separator, indent_level + 1);
- }
- }
- first = false;
- dump_string(kv.first, out);
- out.push_back(':');
-
- if (indent >= 0)
- {
- out.push_back(' ');
- }
-
- dump_internal(kv.second, out, indent, separator, indent_level + 1);
- }
- }
-
- if (indent >= 0)
- {
- dump_indentation_part(out, indent, separator, indent_level);
- }
-
- out.push_back('}');
- }
- break;
-
- case type::Function:
- out += "custom function";
- break;
- }
- }
-
- public:
- std::string dump(const int indent, const char separator = ' ') const
- {
- std::string ret;
- ret.reserve(estimate_length());
- dump_internal(*this, ret, indent, separator);
- return ret;
- }
-
- std::string dump() const
- {
- static constexpr int DontIndent = -1;
-
- return dump(DontIndent);
- }
- };
-
- // Used for accessing the internals of a wvalue
- struct wvalue_reader
- {
- int64_t get(int64_t fallback)
- {
- if (ref.t() != type::Number || ref.nt == num_type::Floating_point ||
- ref.nt == num_type::Double_precision_floating_point)
- return fallback;
- return ref.num.si;
- }
-
- double get(double fallback)
- {
- if (ref.t() != type::Number || ref.nt != num_type::Floating_point ||
- ref.nt == num_type::Double_precision_floating_point)
- return fallback;
- return ref.num.d;
- }
-
- bool get(bool fallback)
- {
- if (ref.t() == type::True) return true;
- if (ref.t() == type::False) return false;
- return fallback;
- }
-
- std::string get(const std::string& fallback)
- {
- if (ref.t() != type::String) return fallback;
- return ref.s;
- }
-
- const wvalue& ref;
- };
-
- //std::vector<asio::const_buffer> dump_ref(wvalue& v)
- //{
- //}
- } // namespace json
-} // namespace crow
-
-#include <string>
-#include <unordered_map>
-#include <ios>
-#include <fstream>
-#include <sstream>
-// S_ISREG is not defined for windows
-// This defines it like suggested in https://stackoverflow.com/a/62371749
-#if defined(_MSC_VER)
-#define _CRT_INTERNAL_NONSTDC_NAMES 1
-#endif
-#include <sys/stat.h>
-#if !defined(S_ISREG) && defined(S_IFMT) && defined(S_IFREG)
-#define S_ISREG(m) (((m)&S_IFMT) == S_IFREG)
-#endif
-
-
-
-namespace crow
-{
- template<typename Adaptor, typename Handler, typename... Middlewares>
- class Connection;
-
- class Router;
-
- /// HTTP response
- struct response
- {
- template<typename Adaptor, typename Handler, typename... Middlewares>
- friend class crow::Connection;
-
- friend class Router;
-
- int code{200}; ///< The Status code for the response.
- std::string body; ///< The actual payload containing the response data.
- ci_map headers; ///< HTTP headers.
-
-#ifdef CROW_ENABLE_COMPRESSION
- bool compressed = true; ///< If compression is enabled and this is false, the individual response will not be compressed.
-#endif
- bool skip_body = false; ///< Whether this is a response to a HEAD request.
- bool manual_length_header = false; ///< Whether Crow should automatically add a "Content-Length" header.
-
- /// Set the value of an existing header in the response.
- void set_header(std::string key, std::string value)
- {
- headers.erase(key);
- headers.emplace(std::move(key), std::move(value));
- }
-
- /// Add a new header to the response.
- void add_header(std::string key, std::string value)
- {
- headers.emplace(std::move(key), std::move(value));
- }
-
- const std::string& get_header_value(const std::string& key)
- {
- return crow::get_header_value(headers, key);
- }
-
- // naive validation of a mime-type string
- static bool validate_mime_type(const std::string& candidate) noexcept
- {
- // Here we simply check that the candidate type starts with
- // a valid parent type, and has at least one character afterwards.
- std::array<std::string, 10> valid_parent_types = {
- "application/", "audio/", "font/", "example/",
- "image/", "message/", "model/", "multipart/",
- "text/", "video/"};
- for (const std::string& parent : valid_parent_types)
- {
- // ensure the candidate is *longer* than the parent,
- // to avoid unnecessary string comparison and to
- // reject zero-length subtypes.
- if (candidate.size() <= parent.size())
- {
- continue;
- }
- // strncmp is used rather than substr to avoid allocation,
- // but a string_view approach would be better if Crow
- // migrates to C++17.
- if (strncmp(parent.c_str(), candidate.c_str(), parent.size()) == 0)
- {
- return true;
- }
- }
- return false;
- }
-
- // Find the mime type from the content type either by lookup,
- // or by the content type itself, if it is a valid a mime type.
- // Defaults to text/plain.
- static std::string get_mime_type(const std::string& contentType)
- {
- const auto mimeTypeIterator = mime_types.find(contentType);
- if (mimeTypeIterator != mime_types.end())
- {
- return mimeTypeIterator->second;
- }
- else if (validate_mime_type(contentType))
- {
- return contentType;
- }
- else
- {
- CROW_LOG_WARNING << "Unable to interpret mime type for content type '" << contentType << "'. Defaulting to text/plain.";
- return "text/plain";
- }
- }
-
-
- // clang-format off
- response() {}
- explicit response(int code) : code(code) {}
- response(std::string body) : body(std::move(body)) {}
- response(int code, std::string body) : code(code), body(std::move(body)) {}
- // clang-format on
- response(returnable&& value)
- {
- body = value.dump();
- set_header("Content-Type", value.content_type);
- }
- response(returnable& value)
- {
- body = value.dump();
- set_header("Content-Type", value.content_type);
- }
- response(int code, returnable& value):
- code(code)
- {
- body = value.dump();
- set_header("Content-Type", value.content_type);
- }
- response(int code, returnable&& value):
- code(code), body(value.dump())
- {
- set_header("Content-Type", std::move(value.content_type));
- }
-
- response(response&& r)
- {
- *this = std::move(r);
- }
-
- response(std::string contentType, std::string body):
- body(std::move(body))
- {
- set_header("Content-Type", get_mime_type(contentType));
- }
-
- response(int code, std::string contentType, std::string body):
- code(code), body(std::move(body))
- {
- set_header("Content-Type", get_mime_type(contentType));
- }
-
- response& operator=(const response& r) = delete;
-
- response& operator=(response&& r) noexcept
- {
- body = std::move(r.body);
- code = r.code;
- headers = std::move(r.headers);
- completed_ = r.completed_;
- file_info = std::move(r.file_info);
- return *this;
- }
-
- /// Check if the response has completed (whether response.end() has been called)
- bool is_completed() const noexcept
- {
- return completed_;
- }
-
- void clear()
- {
- body.clear();
- code = 200;
- headers.clear();
- completed_ = false;
- file_info = static_file_info{};
- }
-
- /// Return a "Temporary Redirect" response.
-
- ///
- /// Location can either be a route or a full URL.
- void redirect(const std::string& location)
- {
- code = 307;
- set_header("Location", location);
- }
-
- /// Return a "Permanent Redirect" response.
-
- ///
- /// Location can either be a route or a full URL.
- void redirect_perm(const std::string& location)
- {
- code = 308;
- set_header("Location", location);
- }
-
- /// Return a "Found (Moved Temporarily)" response.
-
- ///
- /// Location can either be a route or a full URL.
- void moved(const std::string& location)
- {
- code = 302;
- set_header("Location", location);
- }
-
- /// Return a "Moved Permanently" response.
-
- ///
- /// Location can either be a route or a full URL.
- void moved_perm(const std::string& location)
- {
- code = 301;
- set_header("Location", location);
- }
-
- void write(const std::string& body_part)
- {
- body += body_part;
- }
-
- /// Set the response completion flag and call the handler (to send the response).
- void end()
- {
- if (!completed_)
- {
- completed_ = true;
- if (skip_body)
- {
- set_header("Content-Length", std::to_string(body.size()));
- body = "";
- manual_length_header = true;
- }
- if (complete_request_handler_)
- {
- complete_request_handler_();
- manual_length_header = false;
- skip_body = false;
- }
- }
- }
-
- /// Same as end() except it adds a body part right before ending.
- void end(const std::string& body_part)
- {
- body += body_part;
- end();
- }
-
- /// Check if the connection is still alive (usually by checking the socket status).
- bool is_alive()
- {
- return is_alive_helper_ && is_alive_helper_();
- }
-
- /// Check whether the response has a static file defined.
- bool is_static_type()
- {
- return file_info.path.size();
- }
-
- /// This constains metadata (coming from the `stat` command) related to any static files associated with this response.
-
- ///
- /// Either a static file or a string body can be returned as 1 response.
- struct static_file_info
- {
- std::string path = "";
- struct stat statbuf;
- int statResult;
- };
-
- /// Return a static file as the response body
- void set_static_file_info(std::string path)
- {
- utility::sanitize_filename(path);
- set_static_file_info_unsafe(path);
- }
-
- /// Return a static file as the response body without sanitizing the path (use set_static_file_info instead)
- void set_static_file_info_unsafe(std::string path)
- {
- file_info.path = path;
- file_info.statResult = stat(file_info.path.c_str(), &file_info.statbuf);
-#ifdef CROW_ENABLE_COMPRESSION
- compressed = false;
-#endif
- if (file_info.statResult == 0 && S_ISREG(file_info.statbuf.st_mode))
- {
- std::size_t last_dot = path.find_last_of(".");
- std::string extension = path.substr(last_dot + 1);
- code = 200;
- this->add_header("Content-Length", std::to_string(file_info.statbuf.st_size));
-
- if (!extension.empty())
- {
- this->add_header("Content-Type", get_mime_type(extension));
- }
- }
- else
- {
- code = 404;
- file_info.path.clear();
- }
- }
-
- private:
- bool completed_{};
- std::function<void()> complete_request_handler_;
- std::function<bool()> is_alive_helper_;
- static_file_info file_info;
- };
-} // namespace crow
-
-
-namespace crow
-{
-
- struct UTF8
- {
- struct context
- {};
-
- void before_handle(request& /*req*/, response& /*res*/, context& /*ctx*/)
- {}
-
- void after_handle(request& /*req*/, response& res, context& /*ctx*/)
- {
- if (get_header_value(res.headers, "Content-Type").empty())
- {
- res.set_header("Content-Type", "text/plain; charset=utf-8");
- }
- }
- };
-
-} // namespace crow
-
-#include <iomanip>
-#include <memory>
-
-namespace crow
-{
- // Any middleware requires following 3 members:
-
- // struct context;
- // storing data for the middleware; can be read from another middleware or handlers
-
- // before_handle
- // called before handling the request.
- // if res.end() is called, the operation is halted.
- // (still call after_handle of this middleware)
- // 2 signatures:
- // void before_handle(request& req, response& res, context& ctx)
- // if you only need to access this middlewares context.
- // template <typename AllContext>
- // void before_handle(request& req, response& res, context& ctx, AllContext& all_ctx)
- // you can access another middlewares' context by calling `all_ctx.template get<MW>()'
- // ctx == all_ctx.template get<CurrentMiddleware>()
-
- // after_handle
- // called after handling the request.
- // void after_handle(request& req, response& res, context& ctx)
- // template <typename AllContext>
- // void after_handle(request& req, response& res, context& ctx, AllContext& all_ctx)
-
- struct CookieParser
- {
- // Cookie stores key, value and attributes
- struct Cookie
- {
- enum class SameSitePolicy
- {
- Strict,
- Lax,
- None
- };
-
- template<typename U>
- Cookie(const std::string& key, U&& value):
- Cookie()
- {
- key_ = key;
- value_ = std::forward<U>(value);
- }
-
- Cookie(const std::string& key):
- Cookie(key, "") {}
-
- // format cookie to HTTP header format
- std::string dump() const
- {
- const static char* HTTP_DATE_FORMAT = "%a, %d %b %Y %H:%M:%S GMT";
-
- std::stringstream ss;
- ss << key_ << '=';
- ss << (value_.empty() ? "\"\"" : value_);
- dumpString(ss, !domain_.empty(), "Domain=", domain_);
- dumpString(ss, !path_.empty(), "Path=", path_);
- dumpString(ss, secure_, "Secure");
- dumpString(ss, httponly_, "HttpOnly");
- if (expires_at_)
- {
- ss << DIVIDER << "Expires="
- << std::put_time(expires_at_.get(), HTTP_DATE_FORMAT);
- }
- if (max_age_)
- {
- ss << DIVIDER << "Max-Age=" << *max_age_;
- }
- if (same_site_)
- {
- ss << DIVIDER << "SameSite=";
- switch (*same_site_)
- {
- case SameSitePolicy::Strict:
- ss << "Strict";
- break;
- case SameSitePolicy::Lax:
- ss << "Lax";
- break;
- case SameSitePolicy::None:
- ss << "None";
- break;
- }
- }
- return ss.str();
- }
-
- const std::string& name()
- {
- return key_;
- }
-
- template<typename U>
- Cookie& value(U&& value)
- {
- value_ = std::forward<U>(value);
- return *this;
- }
-
- // Expires attribute
- Cookie& expires(const std::tm& time)
- {
- expires_at_ = std::unique_ptr<std::tm>(new std::tm(time));
- return *this;
- }
-
- // Max-Age attribute
- Cookie& max_age(long long seconds)
- {
- max_age_ = std::unique_ptr<long long>(new long long(seconds));
- return *this;
- }
-
- // Domain attribute
- Cookie& domain(const std::string& name)
- {
- domain_ = name;
- return *this;
- }
-
- // Path attribute
- Cookie& path(const std::string& path)
- {
- path_ = path;
- return *this;
- }
-
- // Secured attribute
- Cookie& secure()
- {
- secure_ = true;
- return *this;
- }
-
- // HttpOnly attribute
- Cookie& httponly()
- {
- httponly_ = true;
- return *this;
- }
-
- // SameSite attribute
- Cookie& same_site(SameSitePolicy ssp)
- {
- same_site_ = std::unique_ptr<SameSitePolicy>(new SameSitePolicy(ssp));
- return *this;
- }
-
- Cookie(const Cookie& c):
- key_(c.key_),
- value_(c.value_),
- domain_(c.domain_),
- path_(c.path_),
- secure_(c.secure_),
- httponly_(c.httponly_)
- {
- if (c.max_age_)
- max_age_ = std::unique_ptr<long long>(new long long(*c.max_age_));
-
- if (c.expires_at_)
- expires_at_ = std::unique_ptr<std::tm>(new std::tm(*c.expires_at_));
-
- if (c.same_site_)
- same_site_ = std::unique_ptr<SameSitePolicy>(new SameSitePolicy(*c.same_site_));
- }
-
- private:
- Cookie() = default;
-
- static void dumpString(std::stringstream& ss, bool cond, const char* prefix,
- const std::string& value = "")
- {
- if (cond)
- {
- ss << DIVIDER << prefix << value;
- }
- }
-
- private:
- std::string key_;
- std::string value_;
- std::unique_ptr<long long> max_age_{};
- std::string domain_ = "";
- std::string path_ = "";
- bool secure_ = false;
- bool httponly_ = false;
- std::unique_ptr<std::tm> expires_at_{};
- std::unique_ptr<SameSitePolicy> same_site_{};
-
- static constexpr const char* DIVIDER = "; ";
- };
-
-
- struct context
- {
- std::unordered_map<std::string, std::string> jar;
-
- std::string get_cookie(const std::string& key) const
- {
- auto cookie = jar.find(key);
- if (cookie != jar.end())
- return cookie->second;
- return {};
- }
-
- template<typename U>
- Cookie& set_cookie(const std::string& key, U&& value)
- {
- cookies_to_add.emplace_back(key, std::forward<U>(value));
- return cookies_to_add.back();
- }
-
- Cookie& set_cookie(Cookie cookie)
- {
- cookies_to_add.push_back(std::move(cookie));
- return cookies_to_add.back();
- }
-
- private:
- friend struct CookieParser;
- std::vector<Cookie> cookies_to_add;
- };
-
- void before_handle(request& req, response& res, context& ctx)
- {
- // TODO(dranikpg): remove copies, use string_view with c++17
- int count = req.headers.count("Cookie");
- if (!count)
- return;
- if (count > 1)
- {
- res.code = 400;
- res.end();
- return;
- }
- std::string cookies = req.get_header_value("Cookie");
- size_t pos = 0;
- while (pos < cookies.size())
- {
- size_t pos_equal = cookies.find('=', pos);
- if (pos_equal == cookies.npos)
- break;
- std::string name = cookies.substr(pos, pos_equal - pos);
- name = utility::trim(name);
- pos = pos_equal + 1;
- if (pos == cookies.size())
- break;
-
- size_t pos_semicolon = cookies.find(';', pos);
- std::string value = cookies.substr(pos, pos_semicolon - pos);
-
- value = utility::trim(value);
- if (value[0] == '"' && value[value.size() - 1] == '"')
- {
- value = value.substr(1, value.size() - 2);
- }
-
- ctx.jar.emplace(std::move(name), std::move(value));
-
- pos = pos_semicolon;
- if (pos == cookies.npos)
- break;
- pos++;
- }
- }
-
- void after_handle(request& /*req*/, response& res, context& ctx)
- {
- for (const auto& cookie : ctx.cookies_to_add)
- {
- res.add_header("Set-Cookie", cookie.dump());
- }
- }
- };
-
- /*
- App<CookieParser, AnotherJarMW> app;
- A B C
- A::context
- int aa;
-
- ctx1 : public A::context
- ctx2 : public ctx1, public B::context
- ctx3 : public ctx2, public C::context
-
- C depends on A
-
- C::handle
- context.aaa
-
- App::context : private CookieParser::context, ...
- {
- jar
-
- }
-
- SimpleApp
- */
-} // namespace crow
-
-
-
-#include <unordered_map>
-#include <unordered_set>
-#include <set>
-#include <queue>
-
-#include <memory>
-#include <string>
-#include <cstdio>
-#include <mutex>
-
-#include <fstream>
-#include <sstream>
-
-#include <type_traits>
-#include <functional>
-#include <chrono>
-
-#ifdef CROW_CAN_USE_CPP17
-#include <variant>
-#endif
-
-namespace
-{
- // convert all integer values to int64_t
- template<typename T>
- using wrap_integral_t = typename std::conditional<
- std::is_integral<T>::value && !std::is_same<bool, T>::value
- // except for uint64_t because that could lead to overflow on conversion
- && !std::is_same<uint64_t, T>::value,
- int64_t, T>::type;
-
- // convert char[]/char* to std::string
- template<typename T>
- using wrap_char_t = typename std::conditional<
- std::is_same<typename std::decay<T>::type, char*>::value,
- std::string, T>::type;
-
- // Upgrade to correct type for multi_variant use
- template<typename T>
- using wrap_mv_t = wrap_char_t<wrap_integral_t<T>>;
-} // namespace
-
-namespace crow
-{
- namespace session
- {
-
-#ifdef CROW_CAN_USE_CPP17
- using multi_value_types = black_magic::S<bool, int64_t, double, std::string>;
-
- /// A multi_value is a safe variant wrapper with json conversion support
- struct multi_value
- {
- json::wvalue json() const
- {
- // clang-format off
- return std::visit([](auto arg) {
- return json::wvalue(arg);
- }, v_);
- // clang-format on
- }
-
- static multi_value from_json(const json::rvalue&);
-
- std::string string() const
- {
- // clang-format off
- return std::visit([](auto arg) {
- if constexpr (std::is_same_v<decltype(arg), std::string>)
- return arg;
- else
- return std::to_string(arg);
- }, v_);
- // clang-format on
- }
-
- template<typename T, typename RT = wrap_mv_t<T>>
- RT get(const T& fallback)
- {
- if (const RT* val = std::get_if<RT>(&v_)) return *val;
- return fallback;
- }
-
- template<typename T, typename RT = wrap_mv_t<T>>
- void set(T val)
- {
- v_ = RT(std::move(val));
- }
-
- typename multi_value_types::rebind<std::variant> v_;
- };
-
- inline multi_value multi_value::from_json(const json::rvalue& rv)
- {
- using namespace json;
- switch (rv.t())
- {
- case type::Number:
- {
- if (rv.nt() == num_type::Floating_point || rv.nt() == num_type::Double_precision_floating_point)
- return multi_value{rv.d()};
- else if (rv.nt() == num_type::Unsigned_integer)
- return multi_value{int64_t(rv.u())};
- else
- return multi_value{rv.i()};
- }
- case type::False: return multi_value{false};
- case type::True: return multi_value{true};
- case type::String: return multi_value{std::string(rv)};
- default: return multi_value{false};
- }
- }
-#else
- // Fallback for C++11/14 that uses a raw json::wvalue internally.
- // This implementation consumes significantly more memory
- // than the variant-based version
- struct multi_value
- {
- json::wvalue json() const { return v_; }
-
- static multi_value from_json(const json::rvalue&);
-
- std::string string() const { return v_.dump(); }
-
- template<typename T, typename RT = wrap_mv_t<T>>
- RT get(const T& fallback)
- {
- return json::wvalue_reader{v_}.get((const RT&)(fallback));
- }
-
- template<typename T, typename RT = wrap_mv_t<T>>
- void set(T val)
- {
- v_ = RT(std::move(val));
- }
-
- json::wvalue v_;
- };
-
- inline multi_value multi_value::from_json(const json::rvalue& rv)
- {
- return {rv};
- }
-#endif
-
- /// Expiration tracker keeps track of soonest-to-expire keys
- struct ExpirationTracker
- {
- using DataPair = std::pair<uint64_t /*time*/, std::string /*key*/>;
-
- /// Add key with time to tracker.
- /// If the key is already present, it will be updated
- void add(std::string key, uint64_t time)
- {
- auto it = times_.find(key);
- if (it != times_.end()) remove(key);
- times_[key] = time;
- queue_.insert({time, std::move(key)});
- }
-
- void remove(const std::string& key)
- {
- auto it = times_.find(key);
- if (it != times_.end())
- {
- queue_.erase({it->second, key});
- times_.erase(it);
- }
- }
-
- /// Get expiration time of soonest-to-expire entry
- uint64_t peek_first() const
- {
- if (queue_.empty()) return std::numeric_limits<uint64_t>::max();
- return queue_.begin()->first;
- }
-
- std::string pop_first()
- {
- auto it = times_.find(queue_.begin()->second);
- auto key = it->first;
- times_.erase(it);
- queue_.erase(queue_.begin());
- return key;
- }
-
- using iterator = typename std::set<DataPair>::const_iterator;
-
- iterator begin() const { return queue_.cbegin(); }
-
- iterator end() const { return queue_.cend(); }
-
- private:
- std::set<DataPair> queue_;
- std::unordered_map<std::string, uint64_t> times_;
- };
-
- /// CachedSessions are shared across requests
- struct CachedSession
- {
- std::string session_id;
- std::string requested_session_id; // session hasn't been created yet, but a key was requested
-
- std::unordered_map<std::string, multi_value> entries;
- std::unordered_set<std::string> dirty; // values that were changed after last load
-
- void* store_data;
- bool requested_refresh;
-
- // number of references held - used for correctly destroying the cache.
- // No need to be atomic, all SessionMiddleware accesses are synchronized
- int referrers;
- std::recursive_mutex mutex;
- };
- } // namespace session
-
- // SessionMiddleware allows storing securely and easily small snippets of user information
- template<typename Store>
- struct SessionMiddleware
- {
-#ifdef CROW_CAN_USE_CPP17
- using lock = std::scoped_lock<std::mutex>;
- using rc_lock = std::scoped_lock<std::recursive_mutex>;
-#else
- using lock = std::lock_guard<std::mutex>;
- using rc_lock = std::lock_guard<std::recursive_mutex>;
-#endif
-
- struct context
- {
- // Get a mutex for locking this session
- std::recursive_mutex& mutex()
- {
- check_node();
- return node->mutex;
- }
-
- // Check whether this session is already present
- bool exists() { return bool(node); }
-
- // Get a value by key or fallback if it doesn't exist or is of another type
- template<typename F>
- auto get(const std::string& key, const F& fallback = F())
- // This trick lets the multi_value deduce the return type from the fallback
- // which allows both:
- // context.get<std::string>("key")
- // context.get("key", "") -> char[] is transformed into string by multivalue
- // to return a string
- -> decltype(std::declval<session::multi_value>().get<F>(std::declval<F>()))
- {
- if (!node) return fallback;
- rc_lock l(node->mutex);
-
- auto it = node->entries.find(key);
- if (it != node->entries.end()) return it->second.get<F>(fallback);
- return fallback;
- }
-
- // Set a value by key
- template<typename T>
- void set(const std::string& key, T value)
- {
- check_node();
- rc_lock l(node->mutex);
-
- node->dirty.insert(key);
- node->entries[key].set(std::move(value));
- }
-
- bool contains(const std::string& key)
- {
- if (!node) return false;
- return node->entries.find(key) != node->entries.end();
- }
-
- // Atomically mutate a value with a function
- template<typename Func>
- void apply(const std::string& key, const Func& f)
- {
- using traits = utility::function_traits<Func>;
- using arg = typename std::decay<typename traits::template arg<0>>::type;
- using retv = typename std::decay<typename traits::result_type>::type;
- check_node();
- rc_lock l(node->mutex);
- node->dirty.insert(key);
- node->entries[key].set<retv>(f(node->entries[key].get(arg{})));
- }
-
- // Remove a value from the session
- void remove(const std::string& key)
- {
- if (!node) return;
- rc_lock l(node->mutex);
- node->dirty.insert(key);
- node->entries.erase(key);
- }
-
- // Format value by key as a string
- std::string string(const std::string& key)
- {
- if (!node) return "";
- rc_lock l(node->mutex);
-
- auto it = node->entries.find(key);
- if (it != node->entries.end()) return it->second.string();
- return "";
- }
-
- // Get a list of keys present in session
- std::vector<std::string> keys()
- {
- if (!node) return {};
- rc_lock l(node->mutex);
-
- std::vector<std::string> out;
- for (const auto& p : node->entries)
- out.push_back(p.first);
- return out;
- }
-
- // Delay expiration by issuing another cookie with an updated expiration time
- // and notifying the store
- void refresh_expiration()
- {
- if (!node) return;
- node->requested_refresh = true;
- }
-
- private:
- friend struct SessionMiddleware;
-
- void check_node()
- {
- if (!node) node = std::make_shared<session::CachedSession>();
- }
-
- std::shared_ptr<session::CachedSession> node;
- };
-
- template<typename... Ts>
- SessionMiddleware(
- CookieParser::Cookie cookie,
- int id_length,
- Ts... ts):
- id_length_(id_length),
- cookie_(cookie),
- store_(std::forward<Ts>(ts)...), mutex_(new std::mutex{})
- {}
-
- template<typename... Ts>
- SessionMiddleware(Ts... ts):
- SessionMiddleware(
- CookieParser::Cookie("session").path("/").max_age(/*month*/ 30 * 24 * 60 * 60),
- /*id_length */ 20, // around 10^34 possible combinations, but small enough to fit into SSO
- std::forward<Ts>(ts)...)
- {}
-
- template<typename AllContext>
- void before_handle(request& /*req*/, response& /*res*/, context& ctx, AllContext& all_ctx)
- {
- lock l(*mutex_);
-
- auto& cookies = all_ctx.template get<CookieParser>();
- auto session_id = load_id(cookies);
- if (session_id == "") return;
-
- // search entry in cache
- auto it = cache_.find(session_id);
- if (it != cache_.end())
- {
- it->second->referrers++;
- ctx.node = it->second;
- return;
- }
-
- // check this is a valid entry before loading
- if (!store_.contains(session_id)) return;
-
- auto node = std::make_shared<session::CachedSession>();
- node->session_id = session_id;
- node->referrers = 1;
-
- try
- {
- store_.load(*node);
- }
- catch (...)
- {
- CROW_LOG_ERROR << "Exception occurred during session load";
- return;
- }
-
- ctx.node = node;
- cache_[session_id] = node;
- }
-
- template<typename AllContext>
- void after_handle(request& /*req*/, response& /*res*/, context& ctx, AllContext& all_ctx)
- {
- lock l(*mutex_);
- if (!ctx.node || --ctx.node->referrers > 0) return;
- ctx.node->requested_refresh |= ctx.node->session_id == "";
-
- // generate new id
- if (ctx.node->session_id == "")
- {
- // check for requested id
- ctx.node->session_id = std::move(ctx.node->requested_session_id);
- if (ctx.node->session_id == "")
- {
- ctx.node->session_id = utility::random_alphanum(id_length_);
- }
- }
- else
- {
- cache_.erase(ctx.node->session_id);
- }
-
- if (ctx.node->requested_refresh)
- {
- auto& cookies = all_ctx.template get<CookieParser>();
- store_id(cookies, ctx.node->session_id);
- }
-
- try
- {
- store_.save(*ctx.node);
- }
- catch (...)
- {
- CROW_LOG_ERROR << "Exception occurred during session save";
- return;
- }
- }
-
- private:
- std::string next_id()
- {
- std::string id;
- do
- {
- id = utility::random_alphanum(id_length_);
- } while (store_.contains(id));
- return id;
- }
-
- std::string load_id(const CookieParser::context& cookies)
- {
- return cookies.get_cookie(cookie_.name());
- }
-
- void store_id(CookieParser::context& cookies, const std::string& session_id)
- {
- cookie_.value(session_id);
- cookies.set_cookie(cookie_);
- }
-
- private:
- int id_length_;
-
- // prototype for cookie
- CookieParser::Cookie cookie_;
-
- Store store_;
-
- // mutexes are immovable
- std::unique_ptr<std::mutex> mutex_;
- std::unordered_map<std::string, std::shared_ptr<session::CachedSession>> cache_;
- };
-
- /// InMemoryStore stores all entries in memory
- struct InMemoryStore
- {
- // Load a value into the session cache.
- // A load is always followed by a save, no loads happen consecutively
- void load(session::CachedSession& cn)
- {
- // load & stores happen sequentially, so moving is safe
- cn.entries = std::move(entries[cn.session_id]);
- }
-
- // Persist session data
- void save(session::CachedSession& cn)
- {
- entries[cn.session_id] = std::move(cn.entries);
- // cn.dirty is a list of changed keys since the last load
- }
-
- bool contains(const std::string& key)
- {
- return entries.count(key) > 0;
- }
-
- std::unordered_map<std::string, std::unordered_map<std::string, session::multi_value>> entries;
- };
-
- // FileStore stores all data as json files in a folder.
- // Files are deleted after expiration. Expiration refreshes are automatically picked up.
- struct FileStore
- {
- FileStore(const std::string& folder, uint64_t expiration_seconds = /*month*/ 30 * 24 * 60 * 60):
- path_(folder), expiration_seconds_(expiration_seconds)
- {
- std::ifstream ifs(get_filename(".expirations", false));
-
- auto current_ts = chrono_time();
- std::string key;
- uint64_t time;
- while (ifs >> key >> time)
- {
- if (current_ts > time)
- {
- evict(key);
- }
- else if (contains(key))
- {
- expirations_.add(key, time);
- }
- }
- }
-
- ~FileStore()
- {
- std::ofstream ofs(get_filename(".expirations", false), std::ios::trunc);
- for (const auto& p : expirations_)
- ofs << p.second << " " << p.first << "\n";
- }
-
- // Delete expired entries
- // At most 3 to prevent freezes
- void handle_expired()
- {
- int deleted = 0;
- auto current_ts = chrono_time();
- while (current_ts > expirations_.peek_first() && deleted < 3)
- {
- evict(expirations_.pop_first());
- deleted++;
- }
- }
-
- void load(session::CachedSession& cn)
- {
- handle_expired();
-
- std::ifstream file(get_filename(cn.session_id));
-
- std::stringstream buffer;
- buffer << file.rdbuf() << std::endl;
-
- for (const auto& p : json::load(buffer.str()))
- cn.entries[p.key()] = session::multi_value::from_json(p);
- }
-
- void save(session::CachedSession& cn)
- {
- if (cn.requested_refresh)
- expirations_.add(cn.session_id, chrono_time() + expiration_seconds_);
- if (cn.dirty.empty()) return;
-
- std::ofstream file(get_filename(cn.session_id));
- json::wvalue jw;
- for (const auto& p : cn.entries)
- jw[p.first] = p.second.json();
- file << jw.dump() << std::flush;
- }
-
- std::string get_filename(const std::string& key, bool suffix = true)
- {
- return utility::join_path(path_, key + (suffix ? ".json" : ""));
- }
-
- bool contains(const std::string& key)
- {
- std::ifstream file(get_filename(key));
- return file.good();
- }
-
- void evict(const std::string& key)
- {
- std::remove(get_filename(key).c_str());
- }
-
- uint64_t chrono_time() const
- {
- return std::chrono::duration_cast<std::chrono::seconds>(
- std::chrono::system_clock::now().time_since_epoch())
- .count();
- }
-
- std::string path_;
- uint64_t expiration_seconds_;
- session::ExpirationTracker expirations_;
- };
-
-} // namespace crow
-
-
-
-#include <tuple>
-#include <type_traits>
-#include <iostream>
-#include <utility>
-
-namespace crow // NOTE: Already documented in "crow/app.h"
-{
-
- /// Local middleware should extend ILocalMiddleware
- struct ILocalMiddleware
- {
- using call_global = std::false_type;
- };
-
- namespace detail
- {
- template<typename MW>
- struct check_before_handle_arity_3_const
- {
- template<typename T, void (T::*)(request&, response&, typename MW::context&) const = &T::before_handle>
- struct get
- {};
- };
-
- template<typename MW>
- struct check_before_handle_arity_3
- {
- template<typename T, void (T::*)(request&, response&, typename MW::context&) = &T::before_handle>
- struct get
- {};
- };
-
- template<typename MW>
- struct check_after_handle_arity_3_const
- {
- template<typename T, void (T::*)(request&, response&, typename MW::context&) const = &T::after_handle>
- struct get
- {};
- };
-
- template<typename MW>
- struct check_after_handle_arity_3
- {
- template<typename T, void (T::*)(request&, response&, typename MW::context&) = &T::after_handle>
- struct get
- {};
- };
-
- template<typename MW>
- struct check_global_call_false
- {
- template<typename T, typename std::enable_if<T::call_global::value == false, bool>::type = true>
- struct get
- {};
- };
-
- template<typename T>
- struct is_before_handle_arity_3_impl
- {
- template<typename C>
- static std::true_type f(typename check_before_handle_arity_3_const<T>::template get<C>*);
-
- template<typename C>
- static std::true_type f(typename check_before_handle_arity_3<T>::template get<C>*);
-
- template<typename C>
- static std::false_type f(...);
-
- public:
- static const bool value = decltype(f<T>(nullptr))::value;
- };
-
- template<typename T>
- struct is_after_handle_arity_3_impl
- {
- template<typename C>
- static std::true_type f(typename check_after_handle_arity_3_const<T>::template get<C>*);
-
- template<typename C>
- static std::true_type f(typename check_after_handle_arity_3<T>::template get<C>*);
-
- template<typename C>
- static std::false_type f(...);
-
- public:
- static constexpr bool value = decltype(f<T>(nullptr))::value;
- };
-
- template<typename MW>
- struct is_middleware_global
- {
- template<typename C>
- static std::false_type f(typename check_global_call_false<MW>::template get<C>*);
-
- template<typename C>
- static std::true_type f(...);
-
- static const bool value = decltype(f<MW>(nullptr))::value;
- };
-
- template<typename MW, typename Context, typename ParentContext>
- typename std::enable_if<!is_before_handle_arity_3_impl<MW>::value>::type
- before_handler_call(MW& mw, request& req, response& res, Context& ctx, ParentContext& /*parent_ctx*/)
- {
- mw.before_handle(req, res, ctx.template get<MW>(), ctx);
- }
-
- template<typename MW, typename Context, typename ParentContext>
- typename std::enable_if<is_before_handle_arity_3_impl<MW>::value>::type
- before_handler_call(MW& mw, request& req, response& res, Context& ctx, ParentContext& /*parent_ctx*/)
- {
- mw.before_handle(req, res, ctx.template get<MW>());
- }
-
- template<typename MW, typename Context, typename ParentContext>
- typename std::enable_if<!is_after_handle_arity_3_impl<MW>::value>::type
- after_handler_call(MW& mw, request& req, response& res, Context& ctx, ParentContext& /*parent_ctx*/)
- {
- mw.after_handle(req, res, ctx.template get<MW>(), ctx);
- }
-
- template<typename MW, typename Context, typename ParentContext>
- typename std::enable_if<is_after_handle_arity_3_impl<MW>::value>::type
- after_handler_call(MW& mw, request& req, response& res, Context& ctx, ParentContext& /*parent_ctx*/)
- {
- mw.after_handle(req, res, ctx.template get<MW>());
- }
-
-
- template<typename CallCriteria,
- int N, typename Context, typename Container>
- typename std::enable_if<(N < std::tuple_size<typename std::remove_reference<Container>::type>::value), bool>::type
- middleware_call_helper(const CallCriteria& cc, Container& middlewares, request& req, response& res, Context& ctx)
- {
-
- using CurrentMW = typename std::tuple_element<N, typename std::remove_reference<Container>::type>::type;
-
- if (!cc.template enabled<CurrentMW>(N))
- {
- return middleware_call_helper<CallCriteria, N + 1, Context, Container>(cc, middlewares, req, res, ctx);
- }
-
- using parent_context_t = typename Context::template partial<N - 1>;
- before_handler_call<CurrentMW, Context, parent_context_t>(std::get<N>(middlewares), req, res, ctx, static_cast<parent_context_t&>(ctx));
- if (res.is_completed())
- {
- after_handler_call<CurrentMW, Context, parent_context_t>(std::get<N>(middlewares), req, res, ctx, static_cast<parent_context_t&>(ctx));
- return true;
- }
-
- if (middleware_call_helper<CallCriteria, N + 1, Context, Container>(cc, middlewares, req, res, ctx))
- {
- after_handler_call<CurrentMW, Context, parent_context_t>(std::get<N>(middlewares), req, res, ctx, static_cast<parent_context_t&>(ctx));
- return true;
- }
-
- return false;
- }
-
- template<typename CallCriteria, int N, typename Context, typename Container>
- typename std::enable_if<(N >= std::tuple_size<typename std::remove_reference<Container>::type>::value), bool>::type
- middleware_call_helper(const CallCriteria& /*cc*/, Container& /*middlewares*/, request& /*req*/, response& /*res*/, Context& /*ctx*/)
- {
- return false;
- }
-
- template<typename CallCriteria, int N, typename Context, typename Container>
- typename std::enable_if<(N < 0)>::type
- after_handlers_call_helper(const CallCriteria& /*cc*/, Container& /*middlewares*/, Context& /*context*/, request& /*req*/, response& /*res*/)
- {
- }
-
- template<typename CallCriteria, int N, typename Context, typename Container>
- typename std::enable_if<(N == 0)>::type after_handlers_call_helper(const CallCriteria& cc, Container& middlewares, Context& ctx, request& req, response& res)
- {
- using parent_context_t = typename Context::template partial<N - 1>;
- using CurrentMW = typename std::tuple_element<N, typename std::remove_reference<Container>::type>::type;
- if (cc.template enabled<CurrentMW>(N))
- {
- after_handler_call<CurrentMW, Context, parent_context_t>(std::get<N>(middlewares), req, res, ctx, static_cast<parent_context_t&>(ctx));
- }
- }
-
- template<typename CallCriteria, int N, typename Context, typename Container>
- typename std::enable_if<(N > 0)>::type after_handlers_call_helper(const CallCriteria& cc, Container& middlewares, Context& ctx, request& req, response& res)
- {
- using parent_context_t = typename Context::template partial<N - 1>;
- using CurrentMW = typename std::tuple_element<N, typename std::remove_reference<Container>::type>::type;
- if (cc.template enabled<CurrentMW>(N))
- {
- after_handler_call<CurrentMW, Context, parent_context_t>(std::get<N>(middlewares), req, res, ctx, static_cast<parent_context_t&>(ctx));
- }
- after_handlers_call_helper<CallCriteria, N - 1, Context, Container>(cc, middlewares, ctx, req, res);
- }
-
- // A CallCriteria that accepts only global middleware
- struct middleware_call_criteria_only_global
- {
- template<typename MW>
- constexpr bool enabled(int) const
- {
- return is_middleware_global<MW>::value;
- }
- };
-
- template<typename F, typename... Args>
- typename std::enable_if<black_magic::CallHelper<F, black_magic::S<Args...>>::value, void>::type
- wrapped_handler_call(crow::request& /*req*/, crow::response& res, const F& f, Args&&... args)
- {
- static_assert(!std::is_same<void, decltype(f(std::declval<Args>()...))>::value,
- "Handler function cannot have void return type; valid return types: string, int, crow::response, crow::returnable");
-
- res = crow::response(f(std::forward<Args>(args)...));
- res.end();
- }
-
- template<typename F, typename... Args>
- typename std::enable_if<
- !black_magic::CallHelper<F, black_magic::S<Args...>>::value &&
- black_magic::CallHelper<F, black_magic::S<crow::request&, Args...>>::value,
- void>::type
- wrapped_handler_call(crow::request& req, crow::response& res, const F& f, Args&&... args)
- {
- static_assert(!std::is_same<void, decltype(f(std::declval<crow::request>(), std::declval<Args>()...))>::value,
- "Handler function cannot have void return type; valid return types: string, int, crow::response, crow::returnable");
-
- res = crow::response(f(req, std::forward<Args>(args)...));
- res.end();
- }
-
- template<typename F, typename... Args>
- typename std::enable_if<
- !black_magic::CallHelper<F, black_magic::S<Args...>>::value &&
- !black_magic::CallHelper<F, black_magic::S<crow::request&, Args...>>::value &&
- black_magic::CallHelper<F, black_magic::S<crow::response&, Args...>>::value,
- void>::type
- wrapped_handler_call(crow::request& /*req*/, crow::response& res, const F& f, Args&&... args)
- {
- static_assert(std::is_same<void, decltype(f(std::declval<crow::response&>(), std::declval<Args>()...))>::value,
- "Handler function with response argument should have void return type");
-
- f(res, std::forward<Args>(args)...);
- }
-
- template<typename F, typename... Args>
- typename std::enable_if<
- !black_magic::CallHelper<F, black_magic::S<Args...>>::value &&
- !black_magic::CallHelper<F, black_magic::S<crow::request&, Args...>>::value &&
- !black_magic::CallHelper<F, black_magic::S<crow::response&, Args...>>::value &&
- black_magic::CallHelper<F, black_magic::S<const crow::request&, crow::response&, Args...>>::value,
- void>::type
- wrapped_handler_call(crow::request& req, crow::response& res, const F& f, Args&&... args)
- {
- static_assert(std::is_same<void, decltype(f(std::declval<crow::request&>(), std::declval<crow::response&>(), std::declval<Args>()...))>::value,
- "Handler function with response argument should have void return type");
-
- f(req, res, std::forward<Args>(args)...);
- }
-
- // wrapped_handler_call transparently wraps a handler call behind (req, res, args...)
- template<typename F, typename... Args>
- typename std::enable_if<
- !black_magic::CallHelper<F, black_magic::S<Args...>>::value &&
- !black_magic::CallHelper<F, black_magic::S<crow::request&, Args...>>::value &&
- !black_magic::CallHelper<F, black_magic::S<crow::response&, Args...>>::value &&
- !black_magic::CallHelper<F, black_magic::S<const crow::request&, crow::response&, Args...>>::value,
- void>::type
- wrapped_handler_call(crow::request& req, crow::response& res, const F& f, Args&&... args)
- {
- static_assert(std::is_same<void, decltype(f(std::declval<crow::request&>(), std::declval<crow::response&>(), std::declval<Args>()...))>::value,
- "Handler function with response argument should have void return type");
-
- f(req, res, std::forward<Args>(args)...);
- }
-
- template<bool Reversed>
- struct middleware_call_criteria_dynamic
- {};
-
- template<>
- struct middleware_call_criteria_dynamic<false>
- {
- middleware_call_criteria_dynamic(const std::vector<int>& indices):
- indices(indices), slider(0) {}
-
- template<typename>
- bool enabled(int mw_index) const
- {
- if (slider < int(indices.size()) && indices[slider] == mw_index)
- {
- slider++;
- return true;
- }
- return false;
- }
-
- private:
- const std::vector<int>& indices;
- mutable int slider;
- };
-
- template<>
- struct middleware_call_criteria_dynamic<true>
- {
- middleware_call_criteria_dynamic(const std::vector<int>& indices):
- indices(indices), slider(int(indices.size()) - 1) {}
-
- template<typename>
- bool enabled(int mw_index) const
- {
- if (slider >= 0 && indices[slider] == mw_index)
- {
- slider--;
- return true;
- }
- return false;
- }
-
- private:
- const std::vector<int>& indices;
- mutable int slider;
- };
-
- } // namespace detail
-} // namespace crow
-
-
-
-namespace crow
-{
- namespace detail
- {
-
-
- template<typename... Middlewares>
- struct partial_context : public black_magic::pop_back<Middlewares...>::template rebind<partial_context>, public black_magic::last_element_type<Middlewares...>::type::context
- {
- using parent_context = typename black_magic::pop_back<Middlewares...>::template rebind<::crow::detail::partial_context>;
- template<int N>
- using partial = typename std::conditional<N == sizeof...(Middlewares) - 1, partial_context, typename parent_context::template partial<N>>::type;
-
- template<typename T>
- typename T::context& get()
- {
- return static_cast<typename T::context&>(*this);
- }
- };
-
-
-
- template<>
- struct partial_context<>
- {
- template<int>
- using partial = partial_context;
- };
-
-
- template<typename... Middlewares>
- struct context : private partial_context<Middlewares...>
- //struct context : private Middlewares::context... // simple but less type-safe
- {
- template<typename CallCriteria, int N, typename Context, typename Container>
- friend typename std::enable_if<(N == 0)>::type after_handlers_call_helper(const CallCriteria& cc, Container& middlewares, Context& ctx, request& req, response& res);
- template<typename CallCriteria, int N, typename Context, typename Container>
- friend typename std::enable_if<(N > 0)>::type after_handlers_call_helper(const CallCriteria& cc, Container& middlewares, Context& ctx, request& req, response& res);
-
- template<typename CallCriteria, int N, typename Context, typename Container>
- friend typename std::enable_if<(N < std::tuple_size<typename std::remove_reference<Container>::type>::value), bool>::type
- middleware_call_helper(const CallCriteria& cc, Container& middlewares, request& req, response& res, Context& ctx);
-
- template<typename T>
- typename T::context& get()
- {
- return static_cast<typename T::context&>(*this);
- }
-
- template<int N>
- using partial = typename partial_context<Middlewares...>::template partial<N>;
- };
- } // namespace detail
-} // namespace crow
-
-
-#ifdef CROW_USE_BOOST
-#include <boost/asio.hpp>
-#include <boost/asio/basic_waitable_timer.hpp>
-#else
-#ifndef ASIO_STANDALONE
-#define ASIO_STANDALONE
-#endif
-#include <asio.hpp>
-#include <asio/basic_waitable_timer.hpp>
-#endif
-
-#include <chrono>
-#include <functional>
-#include <map>
-#include <vector>
-
-
-namespace crow
-{
-#ifdef CROW_USE_BOOST
- namespace asio = boost::asio;
- using error_code = boost::system::error_code;
-#else
- using error_code = asio::error_code;
-#endif
- namespace detail
- {
-
- /// A class for scheduling functions to be called after a specific amount of ticks. A tick is equal to 1 second.
- class task_timer
- {
- public:
- using task_type = std::function<void()>;
- using identifier_type = size_t;
-
- private:
- using clock_type = std::chrono::steady_clock;
- using time_type = clock_type::time_point;
-
- public:
- task_timer(asio::io_service& io_service):
- io_service_(io_service), timer_(io_service_)
- {
- timer_.expires_after(std::chrono::seconds(1));
- timer_.async_wait(
- std::bind(&task_timer::tick_handler, this, std::placeholders::_1));
- }
-
- ~task_timer() { timer_.cancel(); }
-
- void cancel(identifier_type id)
- {
- tasks_.erase(id);
- CROW_LOG_DEBUG << "task_timer cancelled: " << this << ' ' << id;
- }
-
- /// Schedule the given task to be executed after the default amount of ticks.
-
- ///
- /// \return identifier_type Used to cancel the thread.
- /// It is not bound to this task_timer instance and in some cases could lead to
- /// undefined behavior if used with other task_timer objects or after the task
- /// has been successfully executed.
- identifier_type schedule(const task_type& task)
- {
- tasks_.insert(
- {++highest_id_,
- {clock_type::now() + std::chrono::seconds(get_default_timeout()),
- task}});
- CROW_LOG_DEBUG << "task_timer scheduled: " << this << ' ' << highest_id_;
- return highest_id_;
- }
-
- /// Schedule the given task to be executed after the given time.
-
- ///
- /// \param timeout The amount of ticks (seconds) to wait before execution.
- ///
- /// \return identifier_type Used to cancel the thread.
- /// It is not bound to this task_timer instance and in some cases could lead to
- /// undefined behavior if used with other task_timer objects or after the task
- /// has been successfully executed.
- identifier_type schedule(const task_type& task, std::uint8_t timeout)
- {
- tasks_.insert({++highest_id_,
- {clock_type::now() + std::chrono::seconds(timeout), task}});
- CROW_LOG_DEBUG << "task_timer scheduled: " << this << ' ' << highest_id_;
- return highest_id_;
- }
-
- /// Set the default timeout for this task_timer instance. (Default: 5)
-
- ///
- /// \param timeout The amount of ticks (seconds) to wait before execution.
- void set_default_timeout(std::uint8_t timeout) { default_timeout_ = timeout; }
-
- /// Get the default timeout. (Default: 5)
- std::uint8_t get_default_timeout() const { return default_timeout_; }
-
- private:
- void process_tasks()
- {
- time_type current_time = clock_type::now();
- std::vector<identifier_type> finished_tasks;
-
- for (const auto& task : tasks_)
- {
- if (task.second.first < current_time)
- {
- (task.second.second)();
- finished_tasks.push_back(task.first);
- CROW_LOG_DEBUG << "task_timer called: " << this << ' ' << task.first;
- }
- }
-
- for (const auto& task : finished_tasks)
- tasks_.erase(task);
-
- // If no task is currently scheduled, reset the issued ids back to 0.
- if (tasks_.empty()) highest_id_ = 0;
- }
-
- void tick_handler(const error_code& ec)
- {
- if (ec) return;
-
- process_tasks();
-
- timer_.expires_after(std::chrono::seconds(1));
- timer_.async_wait(
- std::bind(&task_timer::tick_handler, this, std::placeholders::_1));
- }
-
- private:
- std::uint8_t default_timeout_{5};
- asio::io_service& io_service_;
- asio::basic_waitable_timer<clock_type> timer_;
- std::map<identifier_type, std::pair<time_type, task_type>> tasks_;
-
- // A continuosly increasing number to be issued to threads to identify them.
- // If no tasks are scheduled, it will be reset to 0.
- identifier_type highest_id_{0};
- };
- } // namespace detail
-} // namespace crow
-
-
-#ifdef CROW_USE_BOOST
-#include <boost/asio.hpp>
-#else
-#ifndef ASIO_STANDALONE
-#define ASIO_STANDALONE
-#endif
-#include <asio.hpp>
-#endif
-
-#include <algorithm>
-#include <atomic>
-#include <chrono>
-#include <memory>
-#include <vector>
-
-
-namespace crow
-{
-#ifdef CROW_USE_BOOST
- namespace asio = boost::asio;
- using error_code = boost::system::error_code;
-#else
- using error_code = asio::error_code;
-#endif
- using tcp = asio::ip::tcp;
-
-#ifdef CROW_ENABLE_DEBUG
- static std::atomic<int> connectionCount;
-#endif
-
- /// An HTTP connection.
- template<typename Adaptor, typename Handler, typename... Middlewares>
- class Connection: public std::enable_shared_from_this<Connection<Adaptor, Handler, Middlewares...>>
- {
- friend struct crow::response;
-
- public:
- Connection(
- asio::io_service& io_service,
- Handler* handler,
- const std::string& server_name,
- std::tuple<Middlewares...>* middlewares,
- std::function<std::string()>& get_cached_date_str_f,
- detail::task_timer& task_timer,
- typename Adaptor::context* adaptor_ctx_,
- std::atomic<unsigned int>& queue_length):
- adaptor_(io_service, adaptor_ctx_),
- handler_(handler),
- parser_(this),
- req_(parser_.req),
- server_name_(server_name),
- middlewares_(middlewares),
- get_cached_date_str(get_cached_date_str_f),
- task_timer_(task_timer),
- res_stream_threshold_(handler->stream_threshold()),
- queue_length_(queue_length)
- {
-#ifdef CROW_ENABLE_DEBUG
- connectionCount++;
- CROW_LOG_DEBUG << "Connection (" << this << ") allocated, total: " << connectionCount;
-#endif
- }
-
- ~Connection()
- {
-#ifdef CROW_ENABLE_DEBUG
- connectionCount--;
- CROW_LOG_DEBUG << "Connection (" << this << ") freed, total: " << connectionCount;
-#endif
- }
-
- /// The TCP socket on top of which the connection is established.
- decltype(std::declval<Adaptor>().raw_socket())& socket()
- {
- return adaptor_.raw_socket();
- }
-
- void start()
- {
- auto self = this->shared_from_this();
- adaptor_.start([self](const error_code& ec) {
- if (!ec)
- {
- self->start_deadline();
- self->parser_.clear();
-
- self->do_read();
- }
- else
- {
- CROW_LOG_ERROR << "Could not start adaptor: " << ec.message();
- }
- });
- }
-
- void handle_url()
- {
- routing_handle_result_ = handler_->handle_initial(req_, res);
- // if no route is found for the request method, return the response without parsing or processing anything further.
- if (!routing_handle_result_->rule_index)
- {
- parser_.done();
- need_to_call_after_handlers_ = true;
- complete_request();
- }
- }
-
- void handle_header()
- {
- // HTTP 1.1 Expect: 100-continue
- if (req_.http_ver_major == 1 && req_.http_ver_minor == 1 && get_header_value(req_.headers, "expect") == "100-continue")
- {
- continue_requested = true;
- buffers_.clear();
- static std::string expect_100_continue = "HTTP/1.1 100 Continue\r\n\r\n";
- buffers_.emplace_back(expect_100_continue.data(), expect_100_continue.size());
- do_write();
- }
- }
-
- void handle()
- {
- // TODO(EDev): cancel_deadline_timer should be looked into, it might be a good idea to add it to handle_url() and then restart the timer once everything passes
- cancel_deadline_timer();
- bool is_invalid_request = false;
- add_keep_alive_ = false;
-
- // Create context
- ctx_ = detail::context<Middlewares...>();
- req_.middleware_context = static_cast<void*>(&ctx_);
- req_.middleware_container = static_cast<void*>(middlewares_);
- req_.io_service = &adaptor_.get_io_service();
-
- req_.remote_ip_address = adaptor_.remote_endpoint().address().to_string();
-
- add_keep_alive_ = req_.keep_alive;
- close_connection_ = req_.close_connection;
-
- if (req_.check_version(1, 1)) // HTTP/1.1
- {
- if (!req_.headers.count("host"))
- {
- is_invalid_request = true;
- res = response(400);
- }
- else if (req_.upgrade)
- {
- // h2 or h2c headers
- if (req_.get_header_value("upgrade").substr(0, 2) == "h2")
- {
- // TODO(ipkn): HTTP/2
- // currently, ignore upgrade header
- }
- else
- {
-
- detail::middleware_call_helper<detail::middleware_call_criteria_only_global,
- 0, decltype(ctx_), decltype(*middlewares_)>({}, *middlewares_, req_, res, ctx_);
- close_connection_ = true;
- handler_->handle_upgrade(req_, res, std::move(adaptor_));
- return;
- }
- }
- }
-
- CROW_LOG_INFO << "Request: " << utility::lexical_cast<std::string>(adaptor_.remote_endpoint()) << " " << this << " HTTP/" << (char)(req_.http_ver_major + '0') << "." << (char)(req_.http_ver_minor + '0') << ' ' << method_name(req_.method) << " " << req_.url;
-
-
- need_to_call_after_handlers_ = false;
- if (!is_invalid_request)
- {
- res.complete_request_handler_ = nullptr;
- auto self = this->shared_from_this();
- res.is_alive_helper_ = [self]() -> bool {
- return self->adaptor_.is_open();
- };
-
- detail::middleware_call_helper<detail::middleware_call_criteria_only_global,
- 0, decltype(ctx_), decltype(*middlewares_)>({}, *middlewares_, req_, res, ctx_);
-
- if (!res.completed_)
- {
- auto self = this->shared_from_this();
- res.complete_request_handler_ = [self] {
- self->complete_request();
- };
- need_to_call_after_handlers_ = true;
- handler_->handle(req_, res, routing_handle_result_);
- if (add_keep_alive_)
- res.set_header("connection", "Keep-Alive");
- }
- else
- {
- complete_request();
- }
- }
- else
- {
- complete_request();
- }
- }
-
- /// Call the after handle middleware and send the write the response to the connection.
- void complete_request()
- {
- CROW_LOG_INFO << "Response: " << this << ' ' << req_.raw_url << ' ' << res.code << ' ' << close_connection_;
- res.is_alive_helper_ = nullptr;
-
- if (need_to_call_after_handlers_)
- {
- need_to_call_after_handlers_ = false;
-
- // call all after_handler of middlewares
- detail::after_handlers_call_helper<
- detail::middleware_call_criteria_only_global,
- (static_cast<int>(sizeof...(Middlewares)) - 1),
- decltype(ctx_),
- decltype(*middlewares_)>({}, *middlewares_, ctx_, req_, res);
- }
-#ifdef CROW_ENABLE_COMPRESSION
- if (handler_->compression_used())
- {
- std::string accept_encoding = req_.get_header_value("Accept-Encoding");
- if (!accept_encoding.empty() && res.compressed)
- {
- switch (handler_->compression_algorithm())
- {
- case compression::DEFLATE:
- if (accept_encoding.find("deflate") != std::string::npos)
- {
- res.body = compression::compress_string(res.body, compression::algorithm::DEFLATE);
- res.set_header("Content-Encoding", "deflate");
- }
- break;
- case compression::GZIP:
- if (accept_encoding.find("gzip") != std::string::npos)
- {
- res.body = compression::compress_string(res.body, compression::algorithm::GZIP);
- res.set_header("Content-Encoding", "gzip");
- }
- break;
- default:
- break;
- }
- }
- }
-#endif
- //if there is a redirection with a partial URL, treat the URL as a route.
- std::string location = res.get_header_value("Location");
- if (!location.empty() && location.find("://", 0) == std::string::npos)
- {
-#ifdef CROW_ENABLE_SSL
- if (handler_->ssl_used())
- location.insert(0, "https://" + req_.get_header_value("Host"));
- else
-#endif
- location.insert(0, "http://" + req_.get_header_value("Host"));
- res.set_header("location", location);
- }
-
- prepare_buffers();
-
- if (res.is_static_type())
- {
- do_write_static();
- }
- else
- {
- do_write_general();
- }
- }
-
- private:
- void prepare_buffers()
- {
- res.complete_request_handler_ = nullptr;
- res.is_alive_helper_ = nullptr;
-
- if (!adaptor_.is_open())
- {
- //CROW_LOG_DEBUG << this << " delete (socket is closed) " << is_reading << ' ' << is_writing;
- //delete this;
- return;
- }
- // TODO(EDev): HTTP version in status codes should be dynamic
- // Keep in sync with common.h/status
- static std::unordered_map<int, std::string> statusCodes = {
- {status::CONTINUE, "HTTP/1.1 100 Continue\r\n"},
- {status::SWITCHING_PROTOCOLS, "HTTP/1.1 101 Switching Protocols\r\n"},
-
- {status::OK, "HTTP/1.1 200 OK\r\n"},
- {status::CREATED, "HTTP/1.1 201 Created\r\n"},
- {status::ACCEPTED, "HTTP/1.1 202 Accepted\r\n"},
- {status::NON_AUTHORITATIVE_INFORMATION, "HTTP/1.1 203 Non-Authoritative Information\r\n"},
- {status::NO_CONTENT, "HTTP/1.1 204 No Content\r\n"},
- {status::RESET_CONTENT, "HTTP/1.1 205 Reset Content\r\n"},
- {status::PARTIAL_CONTENT, "HTTP/1.1 206 Partial Content\r\n"},
-
- {status::MULTIPLE_CHOICES, "HTTP/1.1 300 Multiple Choices\r\n"},
- {status::MOVED_PERMANENTLY, "HTTP/1.1 301 Moved Permanently\r\n"},
- {status::FOUND, "HTTP/1.1 302 Found\r\n"},
- {status::SEE_OTHER, "HTTP/1.1 303 See Other\r\n"},
- {status::NOT_MODIFIED, "HTTP/1.1 304 Not Modified\r\n"},
- {status::TEMPORARY_REDIRECT, "HTTP/1.1 307 Temporary Redirect\r\n"},
- {status::PERMANENT_REDIRECT, "HTTP/1.1 308 Permanent Redirect\r\n"},
-
- {status::BAD_REQUEST, "HTTP/1.1 400 Bad Request\r\n"},
- {status::UNAUTHORIZED, "HTTP/1.1 401 Unauthorized\r\n"},
- {status::FORBIDDEN, "HTTP/1.1 403 Forbidden\r\n"},
- {status::NOT_FOUND, "HTTP/1.1 404 Not Found\r\n"},
- {status::METHOD_NOT_ALLOWED, "HTTP/1.1 405 Method Not Allowed\r\n"},
- {status::NOT_ACCEPTABLE, "HTTP/1.1 406 Not Acceptable\r\n"},
- {status::PROXY_AUTHENTICATION_REQUIRED, "HTTP/1.1 407 Proxy Authentication Required\r\n"},
- {status::CONFLICT, "HTTP/1.1 409 Conflict\r\n"},
- {status::GONE, "HTTP/1.1 410 Gone\r\n"},
- {status::PAYLOAD_TOO_LARGE, "HTTP/1.1 413 Payload Too Large\r\n"},
- {status::UNSUPPORTED_MEDIA_TYPE, "HTTP/1.1 415 Unsupported Media Type\r\n"},
- {status::RANGE_NOT_SATISFIABLE, "HTTP/1.1 416 Range Not Satisfiable\r\n"},
- {status::EXPECTATION_FAILED, "HTTP/1.1 417 Expectation Failed\r\n"},
- {status::PRECONDITION_REQUIRED, "HTTP/1.1 428 Precondition Required\r\n"},
- {status::TOO_MANY_REQUESTS, "HTTP/1.1 429 Too Many Requests\r\n"},
- {status::UNAVAILABLE_FOR_LEGAL_REASONS, "HTTP/1.1 451 Unavailable For Legal Reasons\r\n"},
-
- {status::INTERNAL_SERVER_ERROR, "HTTP/1.1 500 Internal Server Error\r\n"},
- {status::NOT_IMPLEMENTED, "HTTP/1.1 501 Not Implemented\r\n"},
- {status::BAD_GATEWAY, "HTTP/1.1 502 Bad Gateway\r\n"},
- {status::SERVICE_UNAVAILABLE, "HTTP/1.1 503 Service Unavailable\r\n"},
- {status::GATEWAY_TIMEOUT, "HTTP/1.1 504 Gateway Timeout\r\n"},
- {status::VARIANT_ALSO_NEGOTIATES, "HTTP/1.1 506 Variant Also Negotiates\r\n"},
- };
-
- static const std::string seperator = ": ";
-
- buffers_.clear();
- buffers_.reserve(4 * (res.headers.size() + 5) + 3);
-
- if (!statusCodes.count(res.code))
- {
- CROW_LOG_WARNING << this << " status code "
- << "(" << res.code << ")"
- << " not defined, returning 500 instead";
- res.code = 500;
- }
-
- auto& status = statusCodes.find(res.code)->second;
- buffers_.emplace_back(status.data(), status.size());
-
- if (res.code >= 400 && res.body.empty())
- res.body = statusCodes[res.code].substr(9);
-
- for (auto& kv : res.headers)
- {
- buffers_.emplace_back(kv.first.data(), kv.first.size());
- buffers_.emplace_back(seperator.data(), seperator.size());
- buffers_.emplace_back(kv.second.data(), kv.second.size());
- buffers_.emplace_back(crlf.data(), crlf.size());
- }
-
- if (!res.manual_length_header && !res.headers.count("content-length"))
- {
- content_length_ = std::to_string(res.body.size());
- static std::string content_length_tag = "Content-Length: ";
- buffers_.emplace_back(content_length_tag.data(), content_length_tag.size());
- buffers_.emplace_back(content_length_.data(), content_length_.size());
- buffers_.emplace_back(crlf.data(), crlf.size());
- }
- if (!res.headers.count("server"))
- {
- static std::string server_tag = "Server: ";
- buffers_.emplace_back(server_tag.data(), server_tag.size());
- buffers_.emplace_back(server_name_.data(), server_name_.size());
- buffers_.emplace_back(crlf.data(), crlf.size());
- }
- if (!res.headers.count("date"))
- {
- static std::string date_tag = "Date: ";
- date_str_ = get_cached_date_str();
- buffers_.emplace_back(date_tag.data(), date_tag.size());
- buffers_.emplace_back(date_str_.data(), date_str_.size());
- buffers_.emplace_back(crlf.data(), crlf.size());
- }
- if (add_keep_alive_)
- {
- static std::string keep_alive_tag = "Connection: Keep-Alive";
- buffers_.emplace_back(keep_alive_tag.data(), keep_alive_tag.size());
- buffers_.emplace_back(crlf.data(), crlf.size());
- }
-
- buffers_.emplace_back(crlf.data(), crlf.size());
- }
-
- void do_write_static()
- {
- asio::write(adaptor_.socket(), buffers_);
-
- if (res.file_info.statResult == 0)
- {
- std::ifstream is(res.file_info.path.c_str(), std::ios::in | std::ios::binary);
- std::vector<asio::const_buffer> buffers{1};
- char buf[16384];
- is.read(buf, sizeof(buf));
- while (is.gcount() > 0)
- {
- buffers[0] = asio::buffer(buf, is.gcount());
- do_write_sync(buffers);
- is.read(buf, sizeof(buf));
- }
- }
- if (close_connection_)
- {
- adaptor_.shutdown_readwrite();
- adaptor_.close();
- CROW_LOG_DEBUG << this << " from write (static)";
- }
-
- res.end();
- res.clear();
- buffers_.clear();
- parser_.clear();
- }
-
- void do_write_general()
- {
- if (res.body.length() < res_stream_threshold_)
- {
- res_body_copy_.swap(res.body);
- buffers_.emplace_back(res_body_copy_.data(), res_body_copy_.size());
-
- do_write();
-
- if (need_to_start_read_after_complete_)
- {
- need_to_start_read_after_complete_ = false;
- start_deadline();
- do_read();
- }
- }
- else
- {
- asio::write(adaptor_.socket(), buffers_); // Write the response start / headers
- cancel_deadline_timer();
- if (res.body.length() > 0)
- {
- std::vector<asio::const_buffer> buffers{1};
- const uint8_t *data = reinterpret_cast<const uint8_t*>(res.body.data());
- size_t length = res.body.length();
- for(size_t transferred = 0; transferred < length;)
- {
- size_t to_transfer = CROW_MIN(16384UL, length-transferred);
- buffers[0] = asio::const_buffer(data+transferred, to_transfer);
- do_write_sync(buffers);
- transferred += to_transfer;
- }
- }
- if (close_connection_)
- {
- adaptor_.shutdown_readwrite();
- adaptor_.close();
- CROW_LOG_DEBUG << this << " from write (res_stream)";
- }
-
- res.end();
- res.clear();
- buffers_.clear();
- parser_.clear();
- }
- }
-
- void do_read()
- {
- auto self = this->shared_from_this();
- adaptor_.socket().async_read_some(
- asio::buffer(buffer_),
- [self](const error_code& ec, std::size_t bytes_transferred) {
- bool error_while_reading = true;
- if (!ec)
- {
- bool ret = self->parser_.feed(self->buffer_.data(), bytes_transferred);
- if (ret && self->adaptor_.is_open())
- {
- error_while_reading = false;
- }
- }
-
- if (error_while_reading)
- {
- self->cancel_deadline_timer();
- self->parser_.done();
- self->adaptor_.shutdown_read();
- self->adaptor_.close();
- CROW_LOG_DEBUG << self << " from read(1) with description: \"" << http_errno_description(static_cast<http_errno>(self->parser_.http_errno)) << '\"';
- }
- else if (self->close_connection_)
- {
- self->cancel_deadline_timer();
- self->parser_.done();
- // adaptor will close after write
- }
- else if (!self->need_to_call_after_handlers_)
- {
- self->start_deadline();
- self->do_read();
- }
- else
- {
- // res will be completed later by user
- self->need_to_start_read_after_complete_ = true;
- }
- });
- }
-
- void do_write()
- {
- auto self = this->shared_from_this();
- asio::async_write(
- adaptor_.socket(), buffers_,
- [self](const error_code& ec, std::size_t /*bytes_transferred*/) {
- self->res.clear();
- self->res_body_copy_.clear();
- if (!self->continue_requested)
- {
- self->parser_.clear();
- }
- else
- {
- self->continue_requested = false;
- }
-
- if (!ec)
- {
- if (self->close_connection_)
- {
- self->adaptor_.shutdown_write();
- self->adaptor_.close();
- CROW_LOG_DEBUG << self << " from write(1)";
- }
- }
- else
- {
- CROW_LOG_DEBUG << self << " from write(2)";
- }
- });
- }
-
- inline void do_write_sync(std::vector<asio::const_buffer>& buffers)
- {
-
- asio::write(adaptor_.socket(), buffers, [&](error_code ec, std::size_t) {
- if (!ec)
- {
- return false;
- }
- else
- {
- CROW_LOG_ERROR << ec << " - happened while sending buffers";
- CROW_LOG_DEBUG << this << " from write (sync)(2)";
- return true;
- }
- });
- }
-
- void cancel_deadline_timer()
- {
- CROW_LOG_DEBUG << this << " timer cancelled: " << &task_timer_ << ' ' << task_id_;
- task_timer_.cancel(task_id_);
- }
-
- void start_deadline(/*int timeout = 5*/)
- {
- cancel_deadline_timer();
-
- auto self = this->shared_from_this();
- task_id_ = task_timer_.schedule([self] {
- if (!self->adaptor_.is_open())
- {
- return;
- }
- self->adaptor_.shutdown_readwrite();
- self->adaptor_.close();
- });
- CROW_LOG_DEBUG << this << " timer added: " << &task_timer_ << ' ' << task_id_;
- }
-
- private:
- Adaptor adaptor_;
- Handler* handler_;
-
- std::array<char, 4096> buffer_;
-
- HTTPParser<Connection> parser_;
- std::unique_ptr<routing_handle_result> routing_handle_result_;
- request& req_;
- response res;
-
- bool close_connection_ = false;
-
- const std::string& server_name_;
- std::vector<asio::const_buffer> buffers_;
-
- std::string content_length_;
- std::string date_str_;
- std::string res_body_copy_;
-
- detail::task_timer::identifier_type task_id_{};
-
- bool continue_requested{};
- bool need_to_call_after_handlers_{};
- bool need_to_start_read_after_complete_{};
- bool add_keep_alive_{};
-
- std::tuple<Middlewares...>* middlewares_;
- detail::context<Middlewares...> ctx_;
-
- std::function<std::string()>& get_cached_date_str;
- detail::task_timer& task_timer_;
-
- size_t res_stream_threshold_;
-
- std::atomic<unsigned int>& queue_length_;
- };
-
-} // namespace crow
-
-#include <array>
-
-namespace crow // NOTE: Already documented in "crow/app.h"
-{
-#ifdef CROW_USE_BOOST
- namespace asio = boost::asio;
- using error_code = boost::system::error_code;
-#else
- using error_code = asio::error_code;
-#endif
-
- /**
- * \namespace crow::websocket
- * \brief Namespace that includes the \ref Connection class
- * and \ref connection struct. Useful for WebSockets connection.
- *
- * Used specially in crow/websocket.h, crow/app.h and crow/routing.h
- */
- namespace websocket
- {
- enum class WebSocketReadState
- {
- MiniHeader,
- Len16,
- Len64,
- Mask,
- Payload,
- };
-
- /// A base class for websocket connection.
- struct connection
- {
- virtual void send_binary(std::string msg) = 0;
- virtual void send_text(std::string msg) = 0;
- virtual void send_ping(std::string msg) = 0;
- virtual void send_pong(std::string msg) = 0;
- virtual void close(std::string const& msg = "quit") = 0;
- virtual std::string get_remote_ip() = 0;
- virtual ~connection() = default;
-
- void userdata(void* u) { userdata_ = u; }
- void* userdata() { return userdata_; }
-
- private:
- void* userdata_;
- };
-
- // Modified version of the illustration in RFC6455 Section-5.2
- //
- //
- // 0 1 2 3 -byte
- // 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 -bit
- // +-+-+-+-+-------+-+-------------+-------------------------------+
- // |F|R|R|R| opcode|M| Payload len | Extended payload length |
- // |I|S|S|S| (4) |A| (7) | (16/64) |
- // |N|V|V|V| |S| | (if payload len==126/127) |
- // | |1|2|3| |K| | |
- // +-+-+-+-+-------+-+-------------+ - - - - - - - - - - - - - - - +
- // | Extended payload length continued, if payload len == 127 |
- // + - - - - - - - - - - - - - - - +-------------------------------+
- // | |Masking-key, if MASK set to 1 |
- // +-------------------------------+-------------------------------+
- // | Masking-key (continued) | Payload Data |
- // +-------------------------------- - - - - - - - - - - - - - - - +
- // : Payload Data continued ... :
- // + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
- // | Payload Data continued ... |
- // +---------------------------------------------------------------+
- //
-
- /// A websocket connection.
-
- template<typename Adaptor, typename Handler>
- class Connection : public connection
- {
- public:
- /// Constructor for a connection.
-
- ///
- /// Requires a request with an "Upgrade: websocket" header.<br>
- /// Automatically handles the handshake.
- Connection(const crow::request& req, Adaptor&& adaptor, Handler* handler, uint64_t max_payload,
- std::function<void(crow::websocket::connection&)> open_handler,
- std::function<void(crow::websocket::connection&, const std::string&, bool)> message_handler,
- std::function<void(crow::websocket::connection&, const std::string&)> close_handler,
- std::function<void(crow::websocket::connection&, const std::string&)> error_handler,
- std::function<bool(const crow::request&, void**)> accept_handler):
- adaptor_(std::move(adaptor)),
- handler_(handler),
- max_payload_bytes_(max_payload),
- open_handler_(std::move(open_handler)),
- message_handler_(std::move(message_handler)),
- close_handler_(std::move(close_handler)),
- error_handler_(std::move(error_handler)),
- accept_handler_(std::move(accept_handler))
- {
- if (!utility::string_equals(req.get_header_value("upgrade"), "websocket"))
- {
- adaptor_.close();
- handler_->remove_websocket(this);
- delete this;
- return;
- }
-
- if (accept_handler_)
- {
- void* ud = nullptr;
- if (!accept_handler_(req, &ud))
- {
- adaptor_.close();
- handler_->remove_websocket(this);
- delete this;
- return;
- }
- userdata(ud);
- }
-
- // Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
- // Sec-WebSocket-Version: 13
- std::string magic = req.get_header_value("Sec-WebSocket-Key") + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
- sha1::SHA1 s;
- s.processBytes(magic.data(), magic.size());
- uint8_t digest[20];
- s.getDigestBytes(digest);
-
- start(crow::utility::base64encode((unsigned char*)digest, 20));
- }
-
- ~Connection() noexcept override
- {
- // Do not modify anchor_ here since writing shared_ptr is not atomic.
- auto watch = std::weak_ptr<void>{anchor_};
-
- // Wait until all unhandled asynchronous operations to join.
- // As the deletion occurs inside 'check_destroy()', which already locks
- // anchor, use count can be 1 on valid deletion context.
- while (watch.use_count() > 2) // 1 for 'check_destroy() routine', 1 for 'this->anchor_'
- {
- std::this_thread::yield();
- }
- }
-
- template<typename Callable>
- struct WeakWrappedMessage
- {
- Callable callable;
- std::weak_ptr<void> watch;
-
- void operator()()
- {
- if (auto anchor = watch.lock())
- {
- std::move(callable)();
- }
- }
- };
-
- /// Send data through the socket.
- template<typename CompletionHandler>
- void dispatch(CompletionHandler&& handler)
- {
- asio::dispatch(adaptor_.get_io_service(),
- WeakWrappedMessage<typename std::decay<CompletionHandler>::type>{
- std::forward<CompletionHandler>(handler), anchor_});
- }
-
- /// Send data through the socket and return immediately.
- template<typename CompletionHandler>
- void post(CompletionHandler&& handler)
- {
- asio::post(adaptor_.get_io_service(),
- WeakWrappedMessage<typename std::decay<CompletionHandler>::type>{
- std::forward<CompletionHandler>(handler), anchor_});
- }
-
- /// Send a "Ping" message.
-
- ///
- /// Usually invoked to check if the other point is still online.
- void send_ping(std::string msg) override
- {
- send_data(0x9, std::move(msg));
- }
-
- /// Send a "Pong" message.
-
- ///
- /// Usually automatically invoked as a response to a "Ping" message.
- void send_pong(std::string msg) override
- {
- send_data(0xA, std::move(msg));
- }
-
- /// Send a binary encoded message.
- void send_binary(std::string msg) override
- {
- send_data(0x2, std::move(msg));
- }
-
- /// Send a plaintext message.
- void send_text(std::string msg) override
- {
- send_data(0x1, std::move(msg));
- }
-
- /// Send a close signal.
-
- ///
- /// Sets a flag to destroy the object once the message is sent.
- void close(std::string const& msg) override
- {
- dispatch([this, msg]() mutable {
- has_sent_close_ = true;
- if (has_recv_close_ && !is_close_handler_called_)
- {
- is_close_handler_called_ = true;
- if (close_handler_)
- close_handler_(*this, msg);
- }
- auto header = build_header(0x8, msg.size());
- write_buffers_.emplace_back(std::move(header));
- write_buffers_.emplace_back(msg);
- do_write();
- });
- }
-
- std::string get_remote_ip() override
- {
- return adaptor_.remote_endpoint().address().to_string();
- }
-
- void set_max_payload_size(uint64_t payload)
- {
- max_payload_bytes_ = payload;
- }
-
- protected:
- /// Generate the websocket headers using an opcode and the message size (in bytes).
- std::string build_header(int opcode, size_t size)
- {
- char buf[2 + 8] = "\x80\x00";
- buf[0] += opcode;
- if (size < 126)
- {
- buf[1] += static_cast<char>(size);
- return {buf, buf + 2};
- }
- else if (size < 0x10000)
- {
- buf[1] += 126;
- *(uint16_t*)(buf + 2) = htons(static_cast<uint16_t>(size));
- return {buf, buf + 4};
- }
- else
- {
- buf[1] += 127;
- *reinterpret_cast<uint64_t*>(buf + 2) = ((1 == htonl(1)) ? static_cast<uint64_t>(size) : (static_cast<uint64_t>(htonl((size)&0xFFFFFFFF)) << 32) | htonl(static_cast<uint64_t>(size) >> 32));
- return {buf, buf + 10};
- }
- }
-
- /// Send the HTTP upgrade response.
-
- ///
- /// Finishes the handshake process, then starts reading messages from the socket.
- void start(std::string&& hello)
- {
- static const std::string header =
- "HTTP/1.1 101 Switching Protocols\r\n"
- "Upgrade: websocket\r\n"
- "Connection: Upgrade\r\n"
- "Sec-WebSocket-Accept: ";
- write_buffers_.emplace_back(header);
- write_buffers_.emplace_back(std::move(hello));
- write_buffers_.emplace_back(crlf);
- write_buffers_.emplace_back(crlf);
- do_write();
- if (open_handler_)
- open_handler_(*this);
- do_read();
- }
-
- /// Read a websocket message.
-
- ///
- /// Involves:<br>
- /// Handling headers (opcodes, size).<br>
- /// Unmasking the payload.<br>
- /// Reading the actual payload.<br>
- void do_read()
- {
- if (has_sent_close_ && has_recv_close_)
- {
- close_connection_ = true;
- adaptor_.shutdown_readwrite();
- adaptor_.close();
- check_destroy();
- return;
- }
-
- is_reading = true;
- switch (state_)
- {
- case WebSocketReadState::MiniHeader:
- {
- mini_header_ = 0;
- //asio::async_read(adaptor_.socket(), asio::buffer(&mini_header_, 1),
- adaptor_.socket().async_read_some(
- asio::buffer(&mini_header_, 2),
- [this](const error_code& ec, std::size_t
-#ifdef CROW_ENABLE_DEBUG
- bytes_transferred
-#endif
- )
-
- {
- is_reading = false;
- mini_header_ = ntohs(mini_header_);
-#ifdef CROW_ENABLE_DEBUG
-
- if (!ec && bytes_transferred != 2)
- {
- throw std::runtime_error("WebSocket:MiniHeader:async_read fail:asio bug?");
- }
-#endif
-
- if (!ec)
- {
- if ((mini_header_ & 0x80) == 0x80)
- has_mask_ = true;
- else //if the websocket specification is enforced and the message isn't masked, terminate the connection
- {
-#ifndef CROW_ENFORCE_WS_SPEC
- has_mask_ = false;
-#else
- close_connection_ = true;
- adaptor_.shutdown_readwrite();
- adaptor_.close();
- if (error_handler_)
- error_handler_(*this, "Client connection not masked.");
- check_destroy();
-#endif
- }
-
- if ((mini_header_ & 0x7f) == 127)
- {
- state_ = WebSocketReadState::Len64;
- }
- else if ((mini_header_ & 0x7f) == 126)
- {
- state_ = WebSocketReadState::Len16;
- }
- else
- {
- remaining_length_ = mini_header_ & 0x7f;
- state_ = WebSocketReadState::Mask;
- }
- do_read();
- }
- else
- {
- close_connection_ = true;
- adaptor_.shutdown_readwrite();
- adaptor_.close();
- if (error_handler_)
- error_handler_(*this, ec.message());
- check_destroy();
- }
- });
- }
- break;
- case WebSocketReadState::Len16:
- {
- remaining_length_ = 0;
- remaining_length16_ = 0;
- asio::async_read(
- adaptor_.socket(), asio::buffer(&remaining_length16_, 2),
- [this](const error_code& ec, std::size_t
-#ifdef CROW_ENABLE_DEBUG
- bytes_transferred
-#endif
- ) {
- is_reading = false;
- remaining_length16_ = ntohs(remaining_length16_);
- remaining_length_ = remaining_length16_;
-#ifdef CROW_ENABLE_DEBUG
- if (!ec && bytes_transferred != 2)
- {
- throw std::runtime_error("WebSocket:Len16:async_read fail:asio bug?");
- }
-#endif
-
- if (!ec)
- {
- state_ = WebSocketReadState::Mask;
- do_read();
- }
- else
- {
- close_connection_ = true;
- adaptor_.shutdown_readwrite();
- adaptor_.close();
- if (error_handler_)
- error_handler_(*this, ec.message());
- check_destroy();
- }
- });
- }
- break;
- case WebSocketReadState::Len64:
- {
- asio::async_read(
- adaptor_.socket(), asio::buffer(&remaining_length_, 8),
- [this](const error_code& ec, std::size_t
-#ifdef CROW_ENABLE_DEBUG
- bytes_transferred
-#endif
- ) {
- is_reading = false;
- remaining_length_ = ((1 == ntohl(1)) ? (remaining_length_) : (static_cast<uint64_t>(ntohl((remaining_length_)&0xFFFFFFFF)) << 32) | ntohl((remaining_length_) >> 32));
-#ifdef CROW_ENABLE_DEBUG
- if (!ec && bytes_transferred != 8)
- {
- throw std::runtime_error("WebSocket:Len16:async_read fail:asio bug?");
- }
-#endif
-
- if (!ec)
- {
- state_ = WebSocketReadState::Mask;
- do_read();
- }
- else
- {
- close_connection_ = true;
- adaptor_.shutdown_readwrite();
- adaptor_.close();
- if (error_handler_)
- error_handler_(*this, ec.message());
- check_destroy();
- }
- });
- }
- break;
- case WebSocketReadState::Mask:
- if (remaining_length_ > max_payload_bytes_)
- {
- close_connection_ = true;
- adaptor_.close();
- if (error_handler_)
- error_handler_(*this, "Message length exceeds maximum payload.");
- check_destroy();
- }
- else if (has_mask_)
- {
- asio::async_read(
- adaptor_.socket(), asio::buffer((char*)&mask_, 4),
- [this](const error_code& ec, std::size_t
-#ifdef CROW_ENABLE_DEBUG
- bytes_transferred
-#endif
- ) {
- is_reading = false;
-#ifdef CROW_ENABLE_DEBUG
- if (!ec && bytes_transferred != 4)
- {
- throw std::runtime_error("WebSocket:Mask:async_read fail:asio bug?");
- }
-#endif
-
- if (!ec)
- {
- state_ = WebSocketReadState::Payload;
- do_read();
- }
- else
- {
- close_connection_ = true;
- if (error_handler_)
- error_handler_(*this, ec.message());
- adaptor_.shutdown_readwrite();
- adaptor_.close();
- check_destroy();
- }
- });
- }
- else
- {
- state_ = WebSocketReadState::Payload;
- do_read();
- }
- break;
- case WebSocketReadState::Payload:
- {
- auto to_read = static_cast<std::uint64_t>(buffer_.size());
- if (remaining_length_ < to_read)
- to_read = remaining_length_;
- adaptor_.socket().async_read_some(
- asio::buffer(buffer_, static_cast<std::size_t>(to_read)),
- [this](const error_code& ec, std::size_t bytes_transferred) {
- is_reading = false;
-
- if (!ec)
- {
- fragment_.insert(fragment_.end(), buffer_.begin(), buffer_.begin() + bytes_transferred);
- remaining_length_ -= bytes_transferred;
- if (remaining_length_ == 0)
- {
- if (handle_fragment())
- {
- state_ = WebSocketReadState::MiniHeader;
- do_read();
- }
- }
- else
- do_read();
- }
- else
- {
- close_connection_ = true;
- if (error_handler_)
- error_handler_(*this, ec.message());
- adaptor_.shutdown_readwrite();
- adaptor_.close();
- check_destroy();
- }
- });
- }
- break;
- }
- }
-
- /// Check if the FIN bit is set.
- bool is_FIN()
- {
- return mini_header_ & 0x8000;
- }
-
- /// Extract the opcode from the header.
- int opcode()
- {
- return (mini_header_ & 0x0f00) >> 8;
- }
-
- /// Process the payload fragment.
-
- ///
- /// Unmasks the fragment, checks the opcode, merges fragments into 1 message body, and calls the appropriate handler.
- bool handle_fragment()
- {
- if (has_mask_)
- {
- for (decltype(fragment_.length()) i = 0; i < fragment_.length(); i++)
- {
- fragment_[i] ^= ((char*)&mask_)[i % 4];
- }
- }
- switch (opcode())
- {
- case 0: // Continuation
- {
- message_ += fragment_;
- if (is_FIN())
- {
- if (message_handler_)
- message_handler_(*this, message_, is_binary_);
- message_.clear();
- }
- }
- break;
- case 1: // Text
- {
- is_binary_ = false;
- message_ += fragment_;
- if (is_FIN())
- {
- if (message_handler_)
- message_handler_(*this, message_, is_binary_);
- message_.clear();
- }
- }
- break;
- case 2: // Binary
- {
- is_binary_ = true;
- message_ += fragment_;
- if (is_FIN())
- {
- if (message_handler_)
- message_handler_(*this, message_, is_binary_);
- message_.clear();
- }
- }
- break;
- case 0x8: // Close
- {
- has_recv_close_ = true;
- if (!has_sent_close_)
- {
- close(fragment_);
- }
- else
- {
- adaptor_.shutdown_readwrite();
- adaptor_.close();
- close_connection_ = true;
- if (!is_close_handler_called_)
- {
- if (close_handler_)
- close_handler_(*this, fragment_);
- is_close_handler_called_ = true;
- }
- check_destroy();
- return false;
- }
- }
- break;
- case 0x9: // Ping
- {
- send_pong(fragment_);
- }
- break;
- case 0xA: // Pong
- {
- pong_received_ = true;
- }
- break;
- }
-
- fragment_.clear();
- return true;
- }
-
- /// Send the buffers' data through the socket.
-
- ///
- /// Also destroys the object if the Close flag is set.
- void do_write()
- {
- if (sending_buffers_.empty())
- {
- sending_buffers_.swap(write_buffers_);
- std::vector<asio::const_buffer> buffers;
- buffers.reserve(sending_buffers_.size());
- for (auto& s : sending_buffers_)
- {
- buffers.emplace_back(asio::buffer(s));
- }
- auto watch = std::weak_ptr<void>{anchor_};
- asio::async_write(
- adaptor_.socket(), buffers,
- [&, watch](const error_code& ec, std::size_t /*bytes_transferred*/) {
- if (!ec && !close_connection_)
- {
- sending_buffers_.clear();
- if (!write_buffers_.empty())
- do_write();
- if (has_sent_close_)
- close_connection_ = true;
- }
- else
- {
- auto anchor = watch.lock();
- if (anchor == nullptr) { return; }
-
- sending_buffers_.clear();
- close_connection_ = true;
- check_destroy();
- }
- });
- }
- }
-
- /// Destroy the Connection.
- void check_destroy()
- {
- //if (has_sent_close_ && has_recv_close_)
- if (!is_close_handler_called_)
- if (close_handler_)
- close_handler_(*this, "uncleanly");
- handler_->remove_websocket(this);
- if (sending_buffers_.empty() && !is_reading)
- delete this;
- }
-
-
- struct SendMessageType
- {
- std::string payload;
- Connection* self;
- int opcode;
-
- void operator()()
- {
- self->send_data_impl(this);
- }
- };
-
- void send_data_impl(SendMessageType* s)
- {
- auto header = build_header(s->opcode, s->payload.size());
- write_buffers_.emplace_back(std::move(header));
- write_buffers_.emplace_back(std::move(s->payload));
- do_write();
- }
-
- void send_data(int opcode, std::string&& msg)
- {
- SendMessageType event_arg{
- std::move(msg),
- this,
- opcode};
-
- post(std::move(event_arg));
- }
-
- private:
- Adaptor adaptor_;
- Handler* handler_;
-
- std::vector<std::string> sending_buffers_;
- std::vector<std::string> write_buffers_;
-
- std::array<char, 4096> buffer_;
- bool is_binary_;
- std::string message_;
- std::string fragment_;
- WebSocketReadState state_{WebSocketReadState::MiniHeader};
- uint16_t remaining_length16_{0};
- uint64_t remaining_length_{0};
- uint64_t max_payload_bytes_{UINT64_MAX};
- bool close_connection_{false};
- bool is_reading{false};
- bool has_mask_{false};
- uint32_t mask_;
- uint16_t mini_header_;
- bool has_sent_close_{false};
- bool has_recv_close_{false};
- bool error_occurred_{false};
- bool pong_received_{false};
- bool is_close_handler_called_{false};
-
- std::shared_ptr<void> anchor_ = std::make_shared<int>(); // Value is just for placeholding
-
- std::function<void(crow::websocket::connection&)> open_handler_;
- std::function<void(crow::websocket::connection&, const std::string&, bool)> message_handler_;
- std::function<void(crow::websocket::connection&, const std::string&)> close_handler_;
- std::function<void(crow::websocket::connection&, const std::string&)> error_handler_;
- std::function<bool(const crow::request&, void**)> accept_handler_;
- };
- } // namespace websocket
-} // namespace crow
-
-
-namespace crow
-{
- constexpr const char VERSION[] = "master";
-}
-
-
-#ifdef CROW_USE_BOOST
-#include <boost/asio.hpp>
-#ifdef CROW_ENABLE_SSL
-#include <boost/asio/ssl.hpp>
-#endif
-#else
-#ifndef ASIO_STANDALONE
-#define ASIO_STANDALONE
-#endif
-#include <asio.hpp>
-#ifdef CROW_ENABLE_SSL
-#include <asio/ssl.hpp>
-#endif
-#endif
-
-#include <atomic>
-#include <chrono>
-#include <cstdint>
-#include <future>
-#include <memory>
-#include <vector>
-
-
-
-namespace crow // NOTE: Already documented in "crow/app.h"
-{
-#ifdef CROW_USE_BOOST
- namespace asio = boost::asio;
- using error_code = boost::system::error_code;
-#else
- using error_code = asio::error_code;
-#endif
- using tcp = asio::ip::tcp;
-
- template<typename Handler, typename Adaptor = SocketAdaptor, typename... Middlewares>
- class Server
- {
- public:
- Server(Handler* handler, std::string bindaddr, uint16_t port, std::string server_name = std::string("Crow/") + VERSION, std::tuple<Middlewares...>* middlewares = nullptr, uint16_t concurrency = 1, uint8_t timeout = 5, typename Adaptor::context* adaptor_ctx = nullptr):
- acceptor_(io_service_, tcp::endpoint(asio::ip::address::from_string(bindaddr), port)),
- signals_(io_service_),
- tick_timer_(io_service_),
- handler_(handler),
- concurrency_(concurrency),
- timeout_(timeout),
- server_name_(server_name),
- port_(port),
- bindaddr_(bindaddr),
- task_queue_length_pool_(concurrency_ - 1),
- middlewares_(middlewares),
- adaptor_ctx_(adaptor_ctx)
- {}
-
- void set_tick_function(std::chrono::milliseconds d, std::function<void()> f)
- {
- tick_interval_ = d;
- tick_function_ = f;
- }
-
- void on_tick()
- {
- tick_function_();
- tick_timer_.expires_after(std::chrono::milliseconds(tick_interval_.count()));
- tick_timer_.async_wait([this](const error_code& ec) {
- if (ec)
- return;
- on_tick();
- });
- }
-
- void run()
- {
- uint16_t worker_thread_count = concurrency_ - 1;
- for (int i = 0; i < worker_thread_count; i++)
- io_service_pool_.emplace_back(new asio::io_service());
- get_cached_date_str_pool_.resize(worker_thread_count);
- task_timer_pool_.resize(worker_thread_count);
-
- std::vector<std::future<void>> v;
- std::atomic<int> init_count(0);
- for (uint16_t i = 0; i < worker_thread_count; i++)
- v.push_back(
- std::async(
- std::launch::async, [this, i, &init_count] {
- // thread local date string get function
- auto last = std::chrono::steady_clock::now();
-
- std::string date_str;
- auto update_date_str = [&] {
- auto last_time_t = time(0);
- tm my_tm;
-
-#if defined(_MSC_VER) || defined(__MINGW32__)
- gmtime_s(&my_tm, &last_time_t);
-#else
- gmtime_r(&last_time_t, &my_tm);
-#endif
- date_str.resize(100);
- size_t date_str_sz = strftime(&date_str[0], 99, "%a, %d %b %Y %H:%M:%S GMT", &my_tm);
- date_str.resize(date_str_sz);
- };
- update_date_str();
- get_cached_date_str_pool_[i] = [&]() -> std::string {
- if (std::chrono::steady_clock::now() - last >= std::chrono::seconds(1))
- {
- last = std::chrono::steady_clock::now();
- update_date_str();
- }
- return date_str;
- };
-
- // initializing task timers
- detail::task_timer task_timer(*io_service_pool_[i]);
- task_timer.set_default_timeout(timeout_);
- task_timer_pool_[i] = &task_timer;
- task_queue_length_pool_[i] = 0;
-
- init_count++;
- while (1)
- {
- try
- {
- if (io_service_pool_[i]->run() == 0)
- {
- // when io_service.run returns 0, there are no more works to do.
- break;
- }
- }
- catch (std::exception& e)
- {
- CROW_LOG_ERROR << "Worker Crash: An uncaught exception occurred: " << e.what();
- }
- }
- }));
-
- if (tick_function_ && tick_interval_.count() > 0)
- {
- tick_timer_.expires_after(std::chrono::milliseconds(tick_interval_.count()));
- tick_timer_.async_wait(
- [this](const error_code& ec) {
- if (ec)
- return;
- on_tick();
- });
- }
-
- port_ = acceptor_.local_endpoint().port();
- handler_->port(port_);
-
-
- CROW_LOG_INFO << server_name_ << " server is running at " << (handler_->ssl_used() ? "https://" : "http://") << bindaddr_ << ":" << acceptor_.local_endpoint().port() << " using " << concurrency_ << " threads";
- CROW_LOG_INFO << "Call `app.loglevel(crow::LogLevel::Warning)` to hide Info level logs.";
-
- signals_.async_wait(
- [&](const error_code& /*error*/, int /*signal_number*/) {
- stop();
- });
-
- while (worker_thread_count != init_count)
- std::this_thread::yield();
-
- do_accept();
-
- std::thread(
- [this] {
- notify_start();
- io_service_.run();
- CROW_LOG_INFO << "Exiting.";
- })
- .join();
- }
-
- void stop()
- {
- shutting_down_ = true; // Prevent the acceptor from taking new connections
- for (auto& io_service : io_service_pool_)
- {
- if (io_service != nullptr)
- {
- CROW_LOG_INFO << "Closing IO service " << &io_service;
- io_service->stop(); // Close all io_services (and HTTP connections)
- }
- }
-
- CROW_LOG_INFO << "Closing main IO service (" << &io_service_ << ')';
- io_service_.stop(); // Close main io_service
- }
-
- /// Wait until the server has properly started
- void wait_for_start()
- {
- std::unique_lock<std::mutex> lock(start_mutex_);
- if (!server_started_)
- cv_started_.wait(lock);
- }
-
- void signal_clear()
- {
- signals_.clear();
- }
-
- void signal_add(int signal_number)
- {
- signals_.add(signal_number);
- }
-
- private:
- uint16_t pick_io_service_idx()
- {
- uint16_t min_queue_idx = 0;
-
- // TODO improve load balancing
- // size_t is used here to avoid the security issue https://codeql.github.com/codeql-query-help/cpp/cpp-comparison-with-wider-type/
- // even though the max value of this can be only uint16_t as concurrency is uint16_t.
- for (size_t i = 1; i < task_queue_length_pool_.size() && task_queue_length_pool_[min_queue_idx] > 0; i++)
- // No need to check other io_services if the current one has no tasks
- {
- if (task_queue_length_pool_[i] < task_queue_length_pool_[min_queue_idx])
- min_queue_idx = i;
- }
- return min_queue_idx;
- }
-
- void do_accept()
- {
- if (!shutting_down_)
- {
- uint16_t service_idx = pick_io_service_idx();
- asio::io_service& is = *io_service_pool_[service_idx];
- task_queue_length_pool_[service_idx]++;
- CROW_LOG_DEBUG << &is << " {" << service_idx << "} queue length: " << task_queue_length_pool_[service_idx];
-
- auto p = std::make_shared<Connection<Adaptor, Handler, Middlewares...>>(
- is, handler_, server_name_, middlewares_,
- get_cached_date_str_pool_[service_idx], *task_timer_pool_[service_idx], adaptor_ctx_, task_queue_length_pool_[service_idx]);
-
- acceptor_.async_accept(
- p->socket(),
- [this, p, &is, service_idx](error_code ec) {
- if (!ec)
- {
- is.post(
- [p] {
- p->start();
- });
- }
- else
- {
- task_queue_length_pool_[service_idx]--;
- CROW_LOG_DEBUG << &is << " {" << service_idx << "} queue length: " << task_queue_length_pool_[service_idx];
- }
- do_accept();
- });
- }
- }
-
- /// Notify anything using `wait_for_start()` to proceed
- void notify_start()
- {
- std::unique_lock<std::mutex> lock(start_mutex_);
- server_started_ = true;
- cv_started_.notify_all();
- }
-
- private:
- std::vector<std::unique_ptr<asio::io_service>> io_service_pool_;
- asio::io_service io_service_;
- std::vector<detail::task_timer*> task_timer_pool_;
- std::vector<std::function<std::string()>> get_cached_date_str_pool_;
- tcp::acceptor acceptor_;
- bool shutting_down_ = false;
- bool server_started_{false};
- std::condition_variable cv_started_;
- std::mutex start_mutex_;
- asio::signal_set signals_;
-
- asio::basic_waitable_timer<std::chrono::high_resolution_clock> tick_timer_;
-
- Handler* handler_;
- uint16_t concurrency_{2};
- std::uint8_t timeout_;
- std::string server_name_;
- uint16_t port_;
- std::string bindaddr_;
- std::vector<std::atomic<unsigned int>> task_queue_length_pool_;
-
- std::chrono::milliseconds tick_interval_;
- std::function<void()> tick_function_;
-
- std::tuple<Middlewares...>* middlewares_;
-
- typename Adaptor::context* adaptor_ctx_;
- };
-} // namespace crow
-
-#include <string>
-#include <vector>
-#include <fstream>
-#include <iterator>
-#include <functional>
-
-namespace crow
-{
- namespace mustache
- {
- using context = json::wvalue;
-
- template_t load(const std::string& filename);
-
- class invalid_template_exception : public std::exception
- {
- public:
- invalid_template_exception(const std::string& msg):
- msg("crow::mustache error: " + msg)
- {}
- virtual const char* what() const throw()
- {
- return msg.c_str();
- }
- std::string msg;
- };
-
- struct rendered_template : returnable
- {
- rendered_template():
- returnable("text/html") {}
-
- rendered_template(std::string& body):
- returnable("text/html"), body_(std::move(body)) {}
-
- std::string body_;
-
- std::string dump() const override
- {
- return body_;
- }
- };
-
- enum class ActionType
- {
- Ignore,
- Tag,
- UnescapeTag,
- OpenBlock,
- CloseBlock,
- ElseBlock,
- Partial,
- };
-
- struct Action
- {
- int start;
- int end;
- int pos;
- ActionType t;
- Action(ActionType t, size_t start, size_t end, size_t pos = 0):
- start(static_cast<int>(start)), end(static_cast<int>(end)), pos(static_cast<int>(pos)), t(t)
- {
- }
- };
-
- /// A mustache template object.
- class template_t
- {
- public:
- template_t(std::string body):
- body_(std::move(body))
- {
- // {{ {{# {{/ {{^ {{! {{> {{=
- parse();
- }
-
- private:
- std::string tag_name(const Action& action) const
- {
- return body_.substr(action.start, action.end - action.start);
- }
- auto find_context(const std::string& name, const std::vector<const context*>& stack, bool shouldUseOnlyFirstStackValue = false) const -> std::pair<bool, const context&>
- {
- if (name == ".")
- {
- return {true, *stack.back()};
- }
- static json::wvalue empty_str;
- empty_str = "";
-
- int dotPosition = name.find(".");
- if (dotPosition == static_cast<int>(name.npos))
- {
- for (auto it = stack.rbegin(); it != stack.rend(); ++it)
- {
- if ((*it)->t() == json::type::Object)
- {
- if ((*it)->count(name))
- return {true, (**it)[name]};
- }
- }
- }
- else
- {
- std::vector<int> dotPositions;
- dotPositions.push_back(-1);
- while (dotPosition != static_cast<int>(name.npos))
- {
- dotPositions.push_back(dotPosition);
- dotPosition = name.find(".", dotPosition + 1);
- }
- dotPositions.push_back(name.size());
- std::vector<std::string> names;
- names.reserve(dotPositions.size() - 1);
- for (int i = 1; i < static_cast<int>(dotPositions.size()); i++)
- names.emplace_back(name.substr(dotPositions[i - 1] + 1, dotPositions[i] - dotPositions[i - 1] - 1));
-
- for (auto it = stack.rbegin(); it != stack.rend(); ++it)
- {
- const context* view = *it;
- bool found = true;
- for (auto jt = names.begin(); jt != names.end(); ++jt)
- {
- if (view->t() == json::type::Object &&
- view->count(*jt))
- {
- view = &(*view)[*jt];
- }
- else
- {
- if (shouldUseOnlyFirstStackValue)
- {
- return {false, empty_str};
- }
- found = false;
- break;
- }
- }
- if (found)
- return {true, *view};
- }
- }
-
- return {false, empty_str};
- }
-
- void escape(const std::string& in, std::string& out) const
- {
- out.reserve(out.size() + in.size());
- for (auto it = in.begin(); it != in.end(); ++it)
- {
- switch (*it)
- {
- case '&': out += "&amp;"; break;
- case '<': out += "&lt;"; break;
- case '>': out += "&gt;"; break;
- case '"': out += "&quot;"; break;
- case '\'': out += "&#39;"; break;
- case '/': out += "&#x2F;"; break;
- case '`': out += "&#x60;"; break;
- case '=': out += "&#x3D;"; break;
- default: out += *it; break;
- }
- }
- }
-
- bool isTagInsideObjectBlock(const int& current, const std::vector<const context*>& stack) const
- {
- int openedBlock = 0;
- for (int i = current; i > 0; --i)
- {
- auto& action = actions_[i - 1];
-
- if (action.t == ActionType::OpenBlock)
- {
- if (openedBlock == 0 && (*stack.rbegin())->t() == json::type::Object)
- {
- return true;
- }
- --openedBlock;
- }
- else if (action.t == ActionType::CloseBlock)
- {
- ++openedBlock;
- }
- }
-
- return false;
- }
-
- void render_internal(int actionBegin, int actionEnd, std::vector<const context*>& stack, std::string& out, int indent) const
- {
- int current = actionBegin;
-
- if (indent)
- out.insert(out.size(), indent, ' ');
-
- while (current < actionEnd)
- {
- auto& fragment = fragments_[current];
- auto& action = actions_[current];
- render_fragment(fragment, indent, out);
- switch (action.t)
- {
- case ActionType::Ignore:
- // do nothing
- break;
- case ActionType::Partial:
- {
- std::string partial_name = tag_name(action);
- auto partial_templ = load(partial_name);
- int partial_indent = action.pos;
- partial_templ.render_internal(0, partial_templ.fragments_.size() - 1, stack, out, partial_indent ? indent + partial_indent : 0);
- }
- break;
- case ActionType::UnescapeTag:
- case ActionType::Tag:
- {
- bool shouldUseOnlyFirstStackValue = false;
- if (isTagInsideObjectBlock(current, stack))
- {
- shouldUseOnlyFirstStackValue = true;
- }
- auto optional_ctx = find_context(tag_name(action), stack, shouldUseOnlyFirstStackValue);
- auto& ctx = optional_ctx.second;
- switch (ctx.t())
- {
- case json::type::False:
- case json::type::True:
- case json::type::Number:
- out += ctx.dump();
- break;
- case json::type::String:
- if (action.t == ActionType::Tag)
- escape(ctx.s, out);
- else
- out += ctx.s;
- break;
- case json::type::Function:
- {
- std::string execute_result = ctx.execute();
- while (execute_result.find("{{") != std::string::npos)
- {
- template_t result_plug(execute_result);
- execute_result = result_plug.render_string(*(stack[0]));
- }
-
- if (action.t == ActionType::Tag)
- escape(execute_result, out);
- else
- out += execute_result;
- }
- break;
- default:
- throw std::runtime_error("not implemented tag type" + utility::lexical_cast<std::string>(static_cast<int>(ctx.t())));
- }
- }
- break;
- case ActionType::ElseBlock:
- {
- static context nullContext;
- auto optional_ctx = find_context(tag_name(action), stack);
- if (!optional_ctx.first)
- {
- stack.emplace_back(&nullContext);
- break;
- }
-
- auto& ctx = optional_ctx.second;
- switch (ctx.t())
- {
- case json::type::List:
- if (ctx.l && !ctx.l->empty())
- current = action.pos;
- else
- stack.emplace_back(&nullContext);
- break;
- case json::type::False:
- case json::type::Null:
- stack.emplace_back(&nullContext);
- break;
- default:
- current = action.pos;
- break;
- }
- break;
- }
- case ActionType::OpenBlock:
- {
- auto optional_ctx = find_context(tag_name(action), stack);
- if (!optional_ctx.first)
- {
- current = action.pos;
- break;
- }
-
- auto& ctx = optional_ctx.second;
- switch (ctx.t())
- {
- case json::type::List:
- if (ctx.l)
- for (auto it = ctx.l->begin(); it != ctx.l->end(); ++it)
- {
- stack.push_back(&*it);
- render_internal(current + 1, action.pos, stack, out, indent);
- stack.pop_back();
- }
- current = action.pos;
- break;
- case json::type::Number:
- case json::type::String:
- case json::type::Object:
- case json::type::True:
- stack.push_back(&ctx);
- break;
- case json::type::False:
- case json::type::Null:
- current = action.pos;
- break;
- default:
- throw std::runtime_error("{{#: not implemented context type: " + utility::lexical_cast<std::string>(static_cast<int>(ctx.t())));
- break;
- }
- break;
- }
- case ActionType::CloseBlock:
- stack.pop_back();
- break;
- default:
- throw std::runtime_error("not implemented " + utility::lexical_cast<std::string>(static_cast<int>(action.t)));
- }
- current++;
- }
- auto& fragment = fragments_[actionEnd];
- render_fragment(fragment, indent, out);
- }
- void render_fragment(const std::pair<int, int> fragment, int indent, std::string& out) const
- {
- if (indent)
- {
- for (int i = fragment.first; i < fragment.second; i++)
- {
- out += body_[i];
- if (body_[i] == '\n' && i + 1 != static_cast<int>(body_.size()))
- out.insert(out.size(), indent, ' ');
- }
- }
- else
- out.insert(out.size(), body_, fragment.first, fragment.second - fragment.first);
- }
-
- public:
- /// Output a returnable template from this mustache template
- rendered_template render() const
- {
- context empty_ctx;
- std::vector<const context*> stack;
- stack.emplace_back(&empty_ctx);
-
- std::string ret;
- render_internal(0, fragments_.size() - 1, stack, ret, 0);
- return rendered_template(ret);
- }
-
- /// Apply the values from the context provided and output a returnable template from this mustache template
- rendered_template render(const context& ctx) const
- {
- std::vector<const context*> stack;
- stack.emplace_back(&ctx);
-
- std::string ret;
- render_internal(0, fragments_.size() - 1, stack, ret, 0);
- return rendered_template(ret);
- }
-
- /// Apply the values from the context provided and output a returnable template from this mustache template
- rendered_template render(const context&& ctx) const
- {
- return render(ctx);
- }
-
- /// Output a returnable template from this mustache template
- std::string render_string() const
- {
- context empty_ctx;
- std::vector<const context*> stack;
- stack.emplace_back(&empty_ctx);
-
- std::string ret;
- render_internal(0, fragments_.size() - 1, stack, ret, 0);
- return ret;
- }
-
- /// Apply the values from the context provided and output a returnable template from this mustache template
- std::string render_string(const context& ctx) const
- {
- std::vector<const context*> stack;
- stack.emplace_back(&ctx);
-
- std::string ret;
- render_internal(0, fragments_.size() - 1, stack, ret, 0);
- return ret;
- }
-
- private:
- void parse()
- {
- std::string tag_open = "{{";
- std::string tag_close = "}}";
-
- std::vector<int> blockPositions;
-
- size_t current = 0;
- while (1)
- {
- size_t idx = body_.find(tag_open, current);
- if (idx == body_.npos)
- {
- fragments_.emplace_back(static_cast<int>(current), static_cast<int>(body_.size()));
- actions_.emplace_back(ActionType::Ignore, 0, 0);
- break;
- }
- fragments_.emplace_back(static_cast<int>(current), static_cast<int>(idx));
-
- idx += tag_open.size();
- size_t endIdx = body_.find(tag_close, idx);
- if (endIdx == idx)
- {
- throw invalid_template_exception("empty tag is not allowed");
- }
- if (endIdx == body_.npos)
- {
- // error, no matching tag
- throw invalid_template_exception("not matched opening tag");
- }
- current = endIdx + tag_close.size();
- switch (body_[idx])
- {
- case '#':
- idx++;
- while (body_[idx] == ' ')
- idx++;
- while (body_[endIdx - 1] == ' ')
- endIdx--;
- blockPositions.emplace_back(static_cast<int>(actions_.size()));
- actions_.emplace_back(ActionType::OpenBlock, idx, endIdx);
- break;
- case '/':
- idx++;
- while (body_[idx] == ' ')
- idx++;
- while (body_[endIdx - 1] == ' ')
- endIdx--;
- {
- auto& matched = actions_[blockPositions.back()];
- if (body_.compare(idx, endIdx - idx,
- body_, matched.start, matched.end - matched.start) != 0)
- {
- throw invalid_template_exception("not matched {{# {{/ pair: " +
- body_.substr(matched.start, matched.end - matched.start) + ", " +
- body_.substr(idx, endIdx - idx));
- }
- matched.pos = actions_.size();
- }
- actions_.emplace_back(ActionType::CloseBlock, idx, endIdx, blockPositions.back());
- blockPositions.pop_back();
- break;
- case '^':
- idx++;
- while (body_[idx] == ' ')
- idx++;
- while (body_[endIdx - 1] == ' ')
- endIdx--;
- blockPositions.emplace_back(static_cast<int>(actions_.size()));
- actions_.emplace_back(ActionType::ElseBlock, idx, endIdx);
- break;
- case '!':
- // do nothing action
- actions_.emplace_back(ActionType::Ignore, idx + 1, endIdx);
- break;
- case '>': // partial
- idx++;
- while (body_[idx] == ' ')
- idx++;
- while (body_[endIdx - 1] == ' ')
- endIdx--;
- actions_.emplace_back(ActionType::Partial, idx, endIdx);
- break;
- case '{':
- if (tag_open != "{{" || tag_close != "}}")
- throw invalid_template_exception("cannot use triple mustache when delimiter changed");
-
- idx++;
- if (body_[endIdx + 2] != '}')
- {
- throw invalid_template_exception("{{{: }}} not matched");
- }
- while (body_[idx] == ' ')
- idx++;
- while (body_[endIdx - 1] == ' ')
- endIdx--;
- actions_.emplace_back(ActionType::UnescapeTag, idx, endIdx);
- current++;
- break;
- case '&':
- idx++;
- while (body_[idx] == ' ')
- idx++;
- while (body_[endIdx - 1] == ' ')
- endIdx--;
- actions_.emplace_back(ActionType::UnescapeTag, idx, endIdx);
- break;
- case '=':
- // tag itself is no-op
- idx++;
- actions_.emplace_back(ActionType::Ignore, idx, endIdx);
- endIdx--;
- if (body_[endIdx] != '=')
- throw invalid_template_exception("{{=: not matching = tag: " + body_.substr(idx, endIdx - idx));
- endIdx--;
- while (body_[idx] == ' ')
- idx++;
- while (body_[endIdx] == ' ')
- endIdx--;
- endIdx++;
- {
- bool succeeded = false;
- for (size_t i = idx; i < endIdx; i++)
- {
- if (body_[i] == ' ')
- {
- tag_open = body_.substr(idx, i - idx);
- while (body_[i] == ' ')
- i++;
- tag_close = body_.substr(i, endIdx - i);
- if (tag_open.empty())
- throw invalid_template_exception("{{=: empty open tag");
- if (tag_close.empty())
- throw invalid_template_exception("{{=: empty close tag");
-
- if (tag_close.find(" ") != tag_close.npos)
- throw invalid_template_exception("{{=: invalid open/close tag: " + tag_open + " " + tag_close);
- succeeded = true;
- break;
- }
- }
- if (!succeeded)
- throw invalid_template_exception("{{=: cannot find space between new open/close tags");
- }
- break;
- default:
- // normal tag case;
- while (body_[idx] == ' ')
- idx++;
- while (body_[endIdx - 1] == ' ')
- endIdx--;
- actions_.emplace_back(ActionType::Tag, idx, endIdx);
- break;
- }
- }
-
- // removing standalones
- for (int i = actions_.size() - 2; i >= 0; i--)
- {
- if (actions_[i].t == ActionType::Tag || actions_[i].t == ActionType::UnescapeTag)
- continue;
- auto& fragment_before = fragments_[i];
- auto& fragment_after = fragments_[i + 1];
- bool is_last_action = i == static_cast<int>(actions_.size()) - 2;
- bool all_space_before = true;
- int j, k;
- for (j = fragment_before.second - 1; j >= fragment_before.first; j--)
- {
- if (body_[j] != ' ')
- {
- all_space_before = false;
- break;
- }
- }
- if (all_space_before && i > 0)
- continue;
- if (!all_space_before && body_[j] != '\n')
- continue;
- bool all_space_after = true;
- for (k = fragment_after.first; k < static_cast<int>(body_.size()) && k < fragment_after.second; k++)
- {
- if (body_[k] != ' ')
- {
- all_space_after = false;
- break;
- }
- }
- if (all_space_after && !is_last_action)
- continue;
- if (!all_space_after &&
- !(
- body_[k] == '\n' ||
- (body_[k] == '\r' &&
- k + 1 < static_cast<int>(body_.size()) &&
- body_[k + 1] == '\n')))
- continue;
- if (actions_[i].t == ActionType::Partial)
- {
- actions_[i].pos = fragment_before.second - j - 1;
- }
- fragment_before.second = j + 1;
- if (!all_space_after)
- {
- if (body_[k] == '\n')
- k++;
- else
- k += 2;
- fragment_after.first = k;
- }
- }
- }
-
- std::vector<std::pair<int, int>> fragments_;
- std::vector<Action> actions_;
- std::string body_;
- };
-
- inline template_t compile(const std::string& body)
- {
- return template_t(body);
- }
- namespace detail
- {
- inline std::string& get_template_base_directory_ref()
- {
- static std::string template_base_directory = "templates";
- return template_base_directory;
- }
-
- /// A base directory not related to any blueprint
- inline std::string& get_global_template_base_directory_ref()
- {
- static std::string template_base_directory = "templates";
- return template_base_directory;
- }
- } // namespace detail
-
- inline std::string default_loader(const std::string& filename)
- {
- std::string path = detail::get_template_base_directory_ref();
- std::ifstream inf(utility::join_path(path, filename));
- if (!inf)
- {
- CROW_LOG_WARNING << "Template \"" << filename << "\" not found.";
- return {};
- }
- return {std::istreambuf_iterator<char>(inf), std::istreambuf_iterator<char>()};
- }
-
- namespace detail
- {
- inline std::function<std::string(std::string)>& get_loader_ref()
- {
- static std::function<std::string(std::string)> loader = default_loader;
- return loader;
- }
- } // namespace detail
-
- inline void set_base(const std::string& path)
- {
- auto& base = detail::get_template_base_directory_ref();
- base = path;
- if (base.back() != '\\' &&
- base.back() != '/')
- {
- base += '/';
- }
- }
-
- inline void set_global_base(const std::string& path)
- {
- auto& base = detail::get_global_template_base_directory_ref();
- base = path;
- if (base.back() != '\\' &&
- base.back() != '/')
- {
- base += '/';
- }
- }
-
- inline void set_loader(std::function<std::string(std::string)> loader)
- {
- detail::get_loader_ref() = std::move(loader);
- }
-
- inline std::string load_text(const std::string& filename)
- {
- std::string filename_sanitized(filename);
- utility::sanitize_filename(filename_sanitized);
- return detail::get_loader_ref()(filename_sanitized);
- }
-
- inline std::string load_text_unsafe(const std::string& filename)
- {
- return detail::get_loader_ref()(filename);
- }
-
- inline template_t load(const std::string& filename)
- {
- std::string filename_sanitized(filename);
- utility::sanitize_filename(filename_sanitized);
- return compile(detail::get_loader_ref()(filename_sanitized));
- }
-
- inline template_t load_unsafe(const std::string& filename)
- {
- return compile(detail::get_loader_ref()(filename));
- }
- } // namespace mustache
-} // namespace crow
-
-
-#include <cstdint>
-#include <utility>
-#include <tuple>
-#include <unordered_map>
-#include <memory>
-#include <vector>
-#include <algorithm>
-#include <type_traits>
-
-
-namespace crow // NOTE: Already documented in "crow/app.h"
-{
-
- constexpr const uint16_t INVALID_BP_ID{((uint16_t)-1)};
-
- namespace detail
- {
- /// Typesafe wrapper for storing lists of middleware as their indices in the App
- struct middleware_indices
- {
- template<typename App>
- void push()
- {}
-
- template<typename App, typename MW, typename... Middlewares>
- void push()
- {
- using MwContainer = typename App::mw_container_t;
- static_assert(black_magic::has_type<MW, MwContainer>::value, "Middleware must be present in app");
- static_assert(std::is_base_of<crow::ILocalMiddleware, MW>::value, "Middleware must extend ILocalMiddleware");
- int idx = black_magic::tuple_index<MW, MwContainer>::value;
- indices_.push_back(idx);
- push<App, Middlewares...>();
- }
-
- void merge_front(const detail::middleware_indices& other)
- {
- indices_.insert(indices_.begin(), other.indices_.cbegin(), other.indices_.cend());
- }
-
- void merge_back(const detail::middleware_indices& other)
- {
- indices_.insert(indices_.end(), other.indices_.cbegin(), other.indices_.cend());
- }
-
- void pop_back(const detail::middleware_indices& other)
- {
- indices_.resize(indices_.size() - other.indices_.size());
- }
-
- bool empty() const
- {
- return indices_.empty();
- }
-
- // Sorts indices and filters out duplicates to allow fast lookups with traversal
- void pack()
- {
- std::sort(indices_.begin(), indices_.end());
- indices_.erase(std::unique(indices_.begin(), indices_.end()), indices_.end());
- }
-
- const std::vector<int>& indices()
- {
- return indices_;
- }
-
- private:
- std::vector<int> indices_;
- };
- } // namespace detail
-
- /// A base class for all rules.
-
- ///
- /// Used to provide a common interface for code dealing with different types of rules.<br>
- /// A Rule provides a URL, allowed HTTP methods, and handlers.
- class BaseRule
- {
- public:
- BaseRule(std::string rule):
- rule_(std::move(rule))
- {}
-
- virtual ~BaseRule()
- {}
-
- virtual void validate() = 0;
-
- void set_added() {
- added_ = true;
- }
-
- bool is_added() {
- return added_;
- }
-
- std::unique_ptr<BaseRule> upgrade()
- {
- if (rule_to_upgrade_)
- return std::move(rule_to_upgrade_);
- return {};
- }
-
- virtual void handle(request&, response&, const routing_params&) = 0;
- virtual void handle_upgrade(const request&, response& res, SocketAdaptor&&)
- {
- res = response(404);
- res.end();
- }
-#ifdef CROW_ENABLE_SSL
- virtual void handle_upgrade(const request&, response& res, SSLAdaptor&&)
- {
- res = response(404);
- res.end();
- }
-#endif
-
- uint32_t get_methods()
- {
- return methods_;
- }
-
- template<typename F>
- void foreach_method(F f)
- {
- for (uint32_t method = 0, method_bit = 1; method < static_cast<uint32_t>(HTTPMethod::InternalMethodCount); method++, method_bit <<= 1)
- {
- if (methods_ & method_bit)
- f(method);
- }
- }
-
- std::string custom_templates_base;
-
- const std::string& rule() { return rule_; }
-
- protected:
- uint32_t methods_{1 << static_cast<int>(HTTPMethod::Get)};
-
- std::string rule_;
- std::string name_;
- bool added_{false};
-
- std::unique_ptr<BaseRule> rule_to_upgrade_;
-
- detail::middleware_indices mw_indices_;
-
- friend class Router;
- friend class Blueprint;
- template<typename T>
- friend struct RuleParameterTraits;
- };
-
-
- namespace detail
- {
- namespace routing_handler_call_helper
- {
- template<typename T, int Pos>
- struct call_pair
- {
- using type = T;
- static const int pos = Pos;
- };
-
- template<typename H1>
- struct call_params
- {
- H1& handler;
- const routing_params& params;
- request& req;
- response& res;
- };
-
- template<typename F, int NInt, int NUint, int NDouble, int NString, typename S1, typename S2>
- struct call
- {};
-
- template<typename F, int NInt, int NUint, int NDouble, int NString, typename... Args1, typename... Args2>
- struct call<F, NInt, NUint, NDouble, NString, black_magic::S<int64_t, Args1...>, black_magic::S<Args2...>>
- {
- void operator()(F cparams)
- {
- using pushed = typename black_magic::S<Args2...>::template push_back<call_pair<int64_t, NInt>>;
- call<F, NInt + 1, NUint, NDouble, NString, black_magic::S<Args1...>, pushed>()(cparams);
- }
- };
-
- template<typename F, int NInt, int NUint, int NDouble, int NString, typename... Args1, typename... Args2>
- struct call<F, NInt, NUint, NDouble, NString, black_magic::S<uint64_t, Args1...>, black_magic::S<Args2...>>
- {
- void operator()(F cparams)
- {
- using pushed = typename black_magic::S<Args2...>::template push_back<call_pair<uint64_t, NUint>>;
- call<F, NInt, NUint + 1, NDouble, NString, black_magic::S<Args1...>, pushed>()(cparams);
- }
- };
-
- template<typename F, int NInt, int NUint, int NDouble, int NString, typename... Args1, typename... Args2>
- struct call<F, NInt, NUint, NDouble, NString, black_magic::S<double, Args1...>, black_magic::S<Args2...>>
- {
- void operator()(F cparams)
- {
- using pushed = typename black_magic::S<Args2...>::template push_back<call_pair<double, NDouble>>;
- call<F, NInt, NUint, NDouble + 1, NString, black_magic::S<Args1...>, pushed>()(cparams);
- }
- };
-
- template<typename F, int NInt, int NUint, int NDouble, int NString, typename... Args1, typename... Args2>
- struct call<F, NInt, NUint, NDouble, NString, black_magic::S<std::string, Args1...>, black_magic::S<Args2...>>
- {
- void operator()(F cparams)
- {
- using pushed = typename black_magic::S<Args2...>::template push_back<call_pair<std::string, NString>>;
- call<F, NInt, NUint, NDouble, NString + 1, black_magic::S<Args1...>, pushed>()(cparams);
- }
- };
-
- template<typename F, int NInt, int NUint, int NDouble, int NString, typename... Args1>
- struct call<F, NInt, NUint, NDouble, NString, black_magic::S<>, black_magic::S<Args1...>>
- {
- void operator()(F cparams)
- {
- cparams.handler(
- cparams.req,
- cparams.res,
- cparams.params.template get<typename Args1::type>(Args1::pos)...);
- }
- };
-
- template<typename Func, typename... ArgsWrapped>
- struct Wrapped
- {
- template<typename... Args>
- void set_(Func f, typename std::enable_if<!std::is_same<typename std::tuple_element<0, std::tuple<Args..., void>>::type, const request&>::value, int>::type = 0)
- {
- handler_ = (
-#ifdef CROW_CAN_USE_CPP14
- [f = std::move(f)]
-#else
- [f]
-#endif
- (const request&, response& res, Args... args) {
- res = response(f(args...));
- res.end();
- });
- }
-
- template<typename Req, typename... Args>
- struct req_handler_wrapper
- {
- req_handler_wrapper(Func f):
- f(std::move(f))
- {
- }
-
- void operator()(const request& req, response& res, Args... args)
- {
- res = response(f(req, args...));
- res.end();
- }
-
- Func f;
- };
-
- template<typename... Args>
- void set_(Func f, typename std::enable_if<
- std::is_same<typename std::tuple_element<0, std::tuple<Args..., void>>::type, const request&>::value &&
- !std::is_same<typename std::tuple_element<1, std::tuple<Args..., void, void>>::type, response&>::value,
- int>::type = 0)
- {
- handler_ = req_handler_wrapper<Args...>(std::move(f));
- /*handler_ = (
- [f = std::move(f)]
- (const request& req, response& res, Args... args){
- res = response(f(req, args...));
- res.end();
- });*/
- }
-
- template<typename... Args>
- void set_(Func f, typename std::enable_if<
- std::is_same<typename std::tuple_element<0, std::tuple<Args..., void>>::type, const request&>::value &&
- std::is_same<typename std::tuple_element<1, std::tuple<Args..., void, void>>::type, response&>::value,
- int>::type = 0)
- {
- handler_ = std::move(f);
- }
-
- template<typename... Args>
- struct handler_type_helper
- {
- using type = std::function<void(const crow::request&, crow::response&, Args...)>;
- using args_type = black_magic::S<typename black_magic::promote_t<Args>...>;
- };
-
- template<typename... Args>
- struct handler_type_helper<const request&, Args...>
- {
- using type = std::function<void(const crow::request&, crow::response&, Args...)>;
- using args_type = black_magic::S<typename black_magic::promote_t<Args>...>;
- };
-
- template<typename... Args>
- struct handler_type_helper<const request&, response&, Args...>
- {
- using type = std::function<void(const crow::request&, crow::response&, Args...)>;
- using args_type = black_magic::S<typename black_magic::promote_t<Args>...>;
- };
-
- typename handler_type_helper<ArgsWrapped...>::type handler_;
-
- void operator()(request& req, response& res, const routing_params& params)
- {
- detail::routing_handler_call_helper::call<
- detail::routing_handler_call_helper::call_params<
- decltype(handler_)>,
- 0, 0, 0, 0,
- typename handler_type_helper<ArgsWrapped...>::args_type,
- black_magic::S<>>()(
- detail::routing_handler_call_helper::call_params<
- decltype(handler_)>{handler_, params, req, res});
- }
- };
-
- } // namespace routing_handler_call_helper
- } // namespace detail
-
-
- class CatchallRule
- {
- public:
- /// @cond SKIP
- CatchallRule() {}
-
- template<typename Func>
- typename std::enable_if<black_magic::CallHelper<Func, black_magic::S<>>::value, void>::type
- operator()(Func&& f)
- {
- static_assert(!std::is_same<void, decltype(f())>::value,
- "Handler function cannot have void return type; valid return types: string, int, crow::response, crow::returnable");
-
- handler_ = (
-#ifdef CROW_CAN_USE_CPP14
- [f = std::move(f)]
-#else
- [f]
-#endif
- (const request&, response& res) {
- res = response(f());
- res.end();
- });
- }
-
- template<typename Func>
- typename std::enable_if<
- !black_magic::CallHelper<Func, black_magic::S<>>::value &&
- black_magic::CallHelper<Func, black_magic::S<crow::request>>::value,
- void>::type
- operator()(Func&& f)
- {
- static_assert(!std::is_same<void, decltype(f(std::declval<crow::request>()))>::value,
- "Handler function cannot have void return type; valid return types: string, int, crow::response, crow::returnable");
-
- handler_ = (
-#ifdef CROW_CAN_USE_CPP14
- [f = std::move(f)]
-#else
- [f]
-#endif
- (const crow::request& req, crow::response& res) {
- res = response(f(req));
- res.end();
- });
- }
-
- template<typename Func>
- typename std::enable_if<
- !black_magic::CallHelper<Func, black_magic::S<>>::value &&
- !black_magic::CallHelper<Func, black_magic::S<crow::request>>::value &&
- black_magic::CallHelper<Func, black_magic::S<crow::response&>>::value,
- void>::type
- operator()(Func&& f)
- {
- static_assert(std::is_same<void, decltype(f(std::declval<crow::response&>()))>::value,
- "Handler function with response argument should have void return type");
- handler_ = (
-#ifdef CROW_CAN_USE_CPP14
- [f = std::move(f)]
-#else
- [f]
-#endif
- (const crow::request&, crow::response& res) {
- f(res);
- });
- }
-
- template<typename Func>
- typename std::enable_if<
- !black_magic::CallHelper<Func, black_magic::S<>>::value &&
- !black_magic::CallHelper<Func, black_magic::S<crow::request>>::value &&
- !black_magic::CallHelper<Func, black_magic::S<crow::response&>>::value,
- void>::type
- operator()(Func&& f)
- {
- static_assert(std::is_same<void, decltype(f(std::declval<crow::request>(), std::declval<crow::response&>()))>::value,
- "Handler function with response argument should have void return type");
-
- handler_ = std::move(f);
- }
- /// @endcond
- bool has_handler()
- {
- return (handler_ != nullptr);
- }
-
- protected:
- friend class Router;
-
- private:
- std::function<void(const crow::request&, crow::response&)> handler_;
- };
-
-
- /// A rule dealing with websockets.
-
- ///
- /// Provides the interface for the user to put in the necessary handlers for a websocket to work.
- template<typename App>
- class WebSocketRule : public BaseRule
- {
- using self_t = WebSocketRule;
-
- public:
- WebSocketRule(std::string rule, App* app):
- BaseRule(std::move(rule)),
- app_(app),
- max_payload_(UINT64_MAX)
- {}
-
- void validate() override
- {}
-
- void handle(request&, response& res, const routing_params&) override
- {
- res = response(404);
- res.end();
- }
-
- void handle_upgrade(const request& req, response&, SocketAdaptor&& adaptor) override
- {
- max_payload_ = max_payload_override_ ? max_payload_ : app_->websocket_max_payload();
- new crow::websocket::Connection<SocketAdaptor, App>(req, std::move(adaptor), app_, max_payload_, open_handler_, message_handler_, close_handler_, error_handler_, accept_handler_);
- }
-#ifdef CROW_ENABLE_SSL
- void handle_upgrade(const request& req, response&, SSLAdaptor&& adaptor) override
- {
- new crow::websocket::Connection<SSLAdaptor, App>(req, std::move(adaptor), app_, max_payload_, open_handler_, message_handler_, close_handler_, error_handler_, accept_handler_);
- }
-#endif
-
- /// Override the global payload limit for this single WebSocket rule
- self_t& max_payload(uint64_t max_payload)
- {
- max_payload_ = max_payload;
- max_payload_override_ = true;
- return *this;
- }
-
- template<typename Func>
- self_t& onopen(Func f)
- {
- open_handler_ = f;
- return *this;
- }
-
- template<typename Func>
- self_t& onmessage(Func f)
- {
- message_handler_ = f;
- return *this;
- }
-
- template<typename Func>
- self_t& onclose(Func f)
- {
- close_handler_ = f;
- return *this;
- }
-
- template<typename Func>
- self_t& onerror(Func f)
- {
- error_handler_ = f;
- return *this;
- }
-
- template<typename Func>
- self_t& onaccept(Func f)
- {
- accept_handler_ = f;
- return *this;
- }
-
- protected:
- App* app_;
- std::function<void(crow::websocket::connection&)> open_handler_;
- std::function<void(crow::websocket::connection&, const std::string&, bool)> message_handler_;
- std::function<void(crow::websocket::connection&, const std::string&)> close_handler_;
- std::function<void(crow::websocket::connection&, const std::string&)> error_handler_;
- std::function<bool(const crow::request&, void**)> accept_handler_;
- uint64_t max_payload_;
- bool max_payload_override_ = false;
- };
-
- /// Allows the user to assign parameters using functions.
-
- ///
- /// `rule.name("name").methods(HTTPMethod::POST)`
- template<typename T>
- struct RuleParameterTraits
- {
- using self_t = T;
-
- template<typename App>
- WebSocketRule<App>& websocket(App* app)
- {
- auto p = new WebSocketRule<App>(static_cast<self_t*>(this)->rule_, app);
- static_cast<self_t*>(this)->rule_to_upgrade_.reset(p);
- return *p;
- }
-
- self_t& name(std::string name) noexcept
- {
- static_cast<self_t*>(this)->name_ = std::move(name);
- return static_cast<self_t&>(*this);
- }
-
- self_t& methods(HTTPMethod method)
- {
- static_cast<self_t*>(this)->methods_ = 1 << static_cast<int>(method);
- return static_cast<self_t&>(*this);
- }
-
- template<typename... MethodArgs>
- self_t& methods(HTTPMethod method, MethodArgs... args_method)
- {
- methods(args_method...);
- static_cast<self_t*>(this)->methods_ |= 1 << static_cast<int>(method);
- return static_cast<self_t&>(*this);
- }
-
- /// Enable local middleware for this handler
- template<typename App, typename... Middlewares>
- self_t& middlewares()
- {
- static_cast<self_t*>(this)->mw_indices_.template push<App, Middlewares...>();
- return static_cast<self_t&>(*this);
- }
- };
-
- /// A rule that can change its parameters during runtime.
- class DynamicRule : public BaseRule, public RuleParameterTraits<DynamicRule>
- {
- public:
- DynamicRule(std::string rule):
- BaseRule(std::move(rule))
- {}
-
- void validate() override
- {
- if (!erased_handler_)
- {
- throw std::runtime_error(name_ + (!name_.empty() ? ": " : "") + "no handler for url " + rule_);
- }
- }
-
- void handle(request& req, response& res, const routing_params& params) override
- {
- if (!custom_templates_base.empty())
- mustache::set_base(custom_templates_base);
- else if (mustache::detail::get_template_base_directory_ref() != "templates")
- mustache::set_base("templates");
- erased_handler_(req, res, params);
- }
-
- template<typename Func>
- void operator()(Func f)
- {
-#ifdef CROW_MSVC_WORKAROUND
- using function_t = utility::function_traits<decltype(&Func::operator())>;
-#else
- using function_t = utility::function_traits<Func>;
-#endif
- erased_handler_ = wrap(std::move(f), black_magic::gen_seq<function_t::arity>());
- }
-
- // enable_if Arg1 == request && Arg2 == response
- // enable_if Arg1 == request && Arg2 != resposne
- // enable_if Arg1 != request
-#ifdef CROW_MSVC_WORKAROUND
- template<typename Func, size_t... Indices>
-#else
- template<typename Func, unsigned... Indices>
-#endif
- std::function<void(request&, response&, const routing_params&)>
- wrap(Func f, black_magic::seq<Indices...>)
- {
-#ifdef CROW_MSVC_WORKAROUND
- using function_t = utility::function_traits<decltype(&Func::operator())>;
-#else
- using function_t = utility::function_traits<Func>;
-#endif
- if (!black_magic::is_parameter_tag_compatible(
- black_magic::get_parameter_tag_runtime(rule_.c_str()),
- black_magic::compute_parameter_tag_from_args_list<
- typename function_t::template arg<Indices>...>::value))
- {
- throw std::runtime_error("route_dynamic: Handler type is mismatched with URL parameters: " + rule_);
- }
- auto ret = detail::routing_handler_call_helper::Wrapped<Func, typename function_t::template arg<Indices>...>();
- ret.template set_<
- typename function_t::template arg<Indices>...>(std::move(f));
- return ret;
- }
-
- template<typename Func>
- void operator()(std::string name, Func&& f)
- {
- name_ = std::move(name);
- (*this).template operator()<Func>(std::forward(f));
- }
-
- private:
- std::function<void(request&, response&, const routing_params&)> erased_handler_;
- };
-
- /// Default rule created when CROW_ROUTE is called.
- template<typename... Args>
- class TaggedRule : public BaseRule, public RuleParameterTraits<TaggedRule<Args...>>
- {
- public:
- using self_t = TaggedRule<Args...>;
-
- TaggedRule(std::string rule):
- BaseRule(std::move(rule))
- {}
-
- void validate() override
- {
- if (rule_.at(0) != '/')
- throw std::runtime_error("Internal error: Routes must start with a '/'");
-
- if (!handler_)
- {
- throw std::runtime_error(name_ + (!name_.empty() ? ": " : "") + "no handler for url " + rule_);
- }
- }
-
- template<typename Func>
- void operator()(Func&& f)
- {
- handler_ = (
-#ifdef CROW_CAN_USE_CPP14
- [f = std::move(f)]
-#else
- [f]
-#endif
- (crow::request& req, crow::response& res, Args... args) {
- detail::wrapped_handler_call(req, res, f, std::forward<Args>(args)...);
- });
- }
-
- template<typename Func>
- void operator()(std::string name, Func&& f)
- {
- name_ = std::move(name);
- (*this).template operator()<Func>(std::forward(f));
- }
-
- void handle(request& req, response& res, const routing_params& params) override
- {
- if (!custom_templates_base.empty())
- mustache::set_base(custom_templates_base);
- else if (mustache::detail::get_template_base_directory_ref() != mustache::detail::get_global_template_base_directory_ref())
- mustache::set_base(mustache::detail::get_global_template_base_directory_ref());
-
- detail::routing_handler_call_helper::call<
- detail::routing_handler_call_helper::call_params<decltype(handler_)>,
- 0, 0, 0, 0,
- black_magic::S<Args...>,
- black_magic::S<>>()(
- detail::routing_handler_call_helper::call_params<decltype(handler_)>{handler_, params, req, res});
- }
-
- private:
- std::function<void(crow::request&, crow::response&, Args...)> handler_;
- };
-
- const int RULE_SPECIAL_REDIRECT_SLASH = 1;
-
-
- /// A search tree.
- class Trie
- {
- public:
- struct Node
- {
- uint16_t rule_index{};
- // Assign the index to the maximum 32 unsigned integer value by default so that any other number (specifically 0) is a valid BP id.
- uint16_t blueprint_index{INVALID_BP_ID};
- std::string key;
- ParamType param = ParamType::MAX; // MAX = No param.
- std::vector<Node> children;
-
- bool IsSimpleNode() const
- {
- return !rule_index &&
- blueprint_index == INVALID_BP_ID &&
- children.size() < 2 &&
- param == ParamType::MAX &&
- std::all_of(std::begin(children), std::end(children), [](const Node& x) {
- return x.param == ParamType::MAX;
- });
- }
-
- Node& add_child_node()
- {
- children.emplace_back();
- return children.back();
- }
- };
-
-
- Trie()
- {}
-
- /// Check whether or not the trie is empty.
- bool is_empty()
- {
- return head_.children.empty();
- }
-
- void optimize()
- {
- for (auto& child : head_.children)
- {
- optimizeNode(child);
- }
- }
-
-
- private:
- void optimizeNode(Node& node)
- {
- if (node.children.empty())
- return;
- if (node.IsSimpleNode())
- {
- auto children_temp = std::move(node.children);
- auto& child_temp = children_temp[0];
- node.key += child_temp.key;
- node.rule_index = child_temp.rule_index;
- node.blueprint_index = child_temp.blueprint_index;
- node.children = std::move(child_temp.children);
- optimizeNode(node);
- }
- else
- {
- for (auto& child : node.children)
- {
- optimizeNode(child);
- }
- }
- }
-
- void debug_node_print(const Node& node, int level)
- {
- if (node.param != ParamType::MAX)
- {
- switch (node.param)
- {
- case ParamType::INT:
- CROW_LOG_DEBUG << std::string(3 * level, ' ') << "└➝ "
- << "<int>";
- break;
- case ParamType::UINT:
- CROW_LOG_DEBUG << std::string(3 * level, ' ') << "└➝ "
- << "<uint>";
- break;
- case ParamType::DOUBLE:
- CROW_LOG_DEBUG << std::string(3 * level, ' ') << "└➝ "
- << "<double>";
- break;
- case ParamType::STRING:
- CROW_LOG_DEBUG << std::string(3 * level, ' ') << "└➝ "
- << "<string>";
- break;
- case ParamType::PATH:
- CROW_LOG_DEBUG << std::string(3 * level, ' ') << "└➝ "
- << "<path>";
- break;
- default:
- CROW_LOG_DEBUG << std::string(3 * level, ' ') << "└➝ "
- << "<ERROR>";
- break;
- }
- }
- else
- CROW_LOG_DEBUG << std::string(3 * level, ' ') << "└➝ " << node.key;
-
- for (const auto& child : node.children)
- {
- debug_node_print(child, level + 1);
- }
- }
-
- public:
- void debug_print()
- {
- CROW_LOG_DEBUG << "└➙ ROOT";
- for (const auto& child : head_.children)
- debug_node_print(child, 1);
- }
-
- void validate()
- {
- if (!head_.IsSimpleNode())
- throw std::runtime_error("Internal error: Trie header should be simple!");
- optimize();
- }
-
- //Rule_index, Blueprint_index, routing_params
- routing_handle_result find(const std::string& req_url, const Node& node, unsigned pos = 0, routing_params* params = nullptr, std::vector<uint16_t>* blueprints = nullptr) const
- {
- //start params as an empty struct
- routing_params empty;
- if (params == nullptr)
- params = &empty;
- //same for blueprint vector
- std::vector<uint16_t> MT;
- if (blueprints == nullptr)
- blueprints = &MT;
-
- uint16_t found{}; //The rule index to be found
- std::vector<uint16_t> found_BP; //The Blueprint indices to be found
- routing_params match_params; //supposedly the final matched parameters
-
- auto update_found = [&found, &found_BP, &match_params](routing_handle_result& ret) {
- found_BP = std::move(ret.blueprint_indices);
- if (ret.rule_index && (!found || found > ret.rule_index))
- {
- found = ret.rule_index;
- match_params = std::move(ret.r_params);
- }
- };
-
- //if the function was called on a node at the end of the string (the last recursion), return the nodes rule index, and whatever params were passed to the function
- if (pos == req_url.size())
- {
- found_BP = std::move(*blueprints);
- return routing_handle_result{node.rule_index, *blueprints, *params};
- }
-
- bool found_fragment = false;
-
- for (const auto& child : node.children)
- {
- if (child.param != ParamType::MAX)
- {
- if (child.param == ParamType::INT)
- {
- char c = req_url[pos];
- if ((c >= '0' && c <= '9') || c == '+' || c == '-')
- {
- char* eptr;
- errno = 0;
- long long int value = strtoll(req_url.data() + pos, &eptr, 10);
- if (errno != ERANGE && eptr != req_url.data() + pos)
- {
- found_fragment = true;
- params->int_params.push_back(value);
- if (child.blueprint_index != INVALID_BP_ID) blueprints->push_back(child.blueprint_index);
- auto ret = find(req_url, child, eptr - req_url.data(), params, blueprints);
- update_found(ret);
- params->int_params.pop_back();
- if (!blueprints->empty()) blueprints->pop_back();
- }
- }
- }
-
- else if (child.param == ParamType::UINT)
- {
- char c = req_url[pos];
- if ((c >= '0' && c <= '9') || c == '+')
- {
- char* eptr;
- errno = 0;
- unsigned long long int value = strtoull(req_url.data() + pos, &eptr, 10);
- if (errno != ERANGE && eptr != req_url.data() + pos)
- {
- found_fragment = true;
- params->uint_params.push_back(value);
- if (child.blueprint_index != INVALID_BP_ID) blueprints->push_back(child.blueprint_index);
- auto ret = find(req_url, child, eptr - req_url.data(), params, blueprints);
- update_found(ret);
- params->uint_params.pop_back();
- if (!blueprints->empty()) blueprints->pop_back();
- }
- }
- }
-
- else if (child.param == ParamType::DOUBLE)
- {
- char c = req_url[pos];
- if ((c >= '0' && c <= '9') || c == '+' || c == '-' || c == '.')
- {
- char* eptr;
- errno = 0;
- double value = strtod(req_url.data() + pos, &eptr);
- if (errno != ERANGE && eptr != req_url.data() + pos)
- {
- found_fragment = true;
- params->double_params.push_back(value);
- if (child.blueprint_index != INVALID_BP_ID) blueprints->push_back(child.blueprint_index);
- auto ret = find(req_url, child, eptr - req_url.data(), params, blueprints);
- update_found(ret);
- params->double_params.pop_back();
- if (!blueprints->empty()) blueprints->pop_back();
- }
- }
- }
-
- else if (child.param == ParamType::STRING)
- {
- size_t epos = pos;
- for (; epos < req_url.size(); epos++)
- {
- if (req_url[epos] == '/')
- break;
- }
-
- if (epos != pos)
- {
- found_fragment = true;
- params->string_params.push_back(req_url.substr(pos, epos - pos));
- if (child.blueprint_index != INVALID_BP_ID) blueprints->push_back(child.blueprint_index);
- auto ret = find(req_url, child, epos, params, blueprints);
- update_found(ret);
- params->string_params.pop_back();
- if (!blueprints->empty()) blueprints->pop_back();
- }
- }
-
- else if (child.param == ParamType::PATH)
- {
- size_t epos = req_url.size();
-
- if (epos != pos)
- {
- found_fragment = true;
- params->string_params.push_back(req_url.substr(pos, epos - pos));
- if (child.blueprint_index != INVALID_BP_ID) blueprints->push_back(child.blueprint_index);
- auto ret = find(req_url, child, epos, params, blueprints);
- update_found(ret);
- params->string_params.pop_back();
- if (!blueprints->empty()) blueprints->pop_back();
- }
- }
- }
-
- else
- {
- const std::string& fragment = child.key;
- if (req_url.compare(pos, fragment.size(), fragment) == 0)
- {
- found_fragment = true;
- if (child.blueprint_index != INVALID_BP_ID) blueprints->push_back(child.blueprint_index);
- auto ret = find(req_url, child, pos + fragment.size(), params, blueprints);
- update_found(ret);
- if (!blueprints->empty()) blueprints->pop_back();
- }
- }
- }
-
- if (!found_fragment)
- found_BP = std::move(*blueprints);
-
- return routing_handle_result{found, found_BP, match_params}; //Called after all the recursions have been done
- }
-
- routing_handle_result find(const std::string& req_url) const
- {
- return find(req_url, head_);
- }
-
- //This functions assumes any blueprint info passed is valid
- void add(const std::string& url, uint16_t rule_index, unsigned bp_prefix_length = 0, uint16_t blueprint_index = INVALID_BP_ID)
- {
- auto idx = &head_;
-
- bool has_blueprint = bp_prefix_length != 0 && blueprint_index != INVALID_BP_ID;
-
- for (unsigned i = 0; i < url.size(); i++)
- {
- char c = url[i];
- if (c == '<')
- {
- static struct ParamTraits
- {
- ParamType type;
- std::string name;
- } paramTraits[] =
- {
- {ParamType::INT, "<int>"},
- {ParamType::UINT, "<uint>"},
- {ParamType::DOUBLE, "<float>"},
- {ParamType::DOUBLE, "<double>"},
- {ParamType::STRING, "<str>"},
- {ParamType::STRING, "<string>"},
- {ParamType::PATH, "<path>"},
- };
-
- for (const auto& x : paramTraits)
- {
- if (url.compare(i, x.name.size(), x.name) == 0)
- {
- bool found = false;
- for (auto& child : idx->children)
- {
- if (child.param == x.type)
- {
- idx = &child;
- i += x.name.size();
- found = true;
- break;
- }
- }
- if (found)
- break;
-
- auto new_node_idx = &idx->add_child_node();
- new_node_idx->param = x.type;
- idx = new_node_idx;
- i += x.name.size();
- break;
- }
- }
-
- i--;
- }
- else
- {
- //This part assumes the tree is unoptimized (every node has a max 1 character key)
- bool piece_found = false;
- for (auto& child : idx->children)
- {
- if (child.key[0] == c)
- {
- idx = &child;
- piece_found = true;
- break;
- }
- }
- if (!piece_found)
- {
- auto new_node_idx = &idx->add_child_node();
- new_node_idx->key = c;
- //The assumption here is that you'd only need to add a blueprint index if the tree didn't have the BP prefix.
- if (has_blueprint && i == bp_prefix_length)
- new_node_idx->blueprint_index = blueprint_index;
- idx = new_node_idx;
- }
- }
- }
-
- //check if the last node already has a value (exact url already in Trie)
- if (idx->rule_index)
- throw std::runtime_error("handler already exists for " + url);
- idx->rule_index = rule_index;
- }
-
- private:
- Node head_;
- };
-
- /// A blueprint can be considered a smaller section of a Crow app, specifically where the router is conecerned.
-
- ///
- /// You can use blueprints to assign a common prefix to rules' prefix, set custom static and template folders, and set a custom catchall route.
- /// You can also assign nest blueprints for maximum Compartmentalization.
- class Blueprint
- {
- public:
- Blueprint(const std::string& prefix):
- prefix_(prefix){};
-
- Blueprint(const std::string& prefix, const std::string& static_dir):
- prefix_(prefix), static_dir_(static_dir){};
-
- Blueprint(const std::string& prefix, const std::string& static_dir, const std::string& templates_dir):
- prefix_(prefix), static_dir_(static_dir), templates_dir_(templates_dir){};
-
- /*
- Blueprint(Blueprint& other)
- {
- prefix_ = std::move(other.prefix_);
- all_rules_ = std::move(other.all_rules_);
- }
-
- Blueprint(const Blueprint& other)
- {
- prefix_ = other.prefix_;
- all_rules_ = other.all_rules_;
- }
-*/
- Blueprint(Blueprint&& value)
- {
- *this = std::move(value);
- }
-
- Blueprint& operator=(const Blueprint& value) = delete;
-
- Blueprint& operator=(Blueprint&& value) noexcept
- {
- prefix_ = std::move(value.prefix_);
- static_dir_ = std::move(value.static_dir_);
- templates_dir_ = std::move(value.templates_dir_);
- all_rules_ = std::move(value.all_rules_);
- catchall_rule_ = std::move(value.catchall_rule_);
- blueprints_ = std::move(value.blueprints_);
- mw_indices_ = std::move(value.mw_indices_);
- return *this;
- }
-
- bool operator==(const Blueprint& value)
- {
- return value.prefix() == prefix_;
- }
-
- bool operator!=(const Blueprint& value)
- {
- return value.prefix() != prefix_;
- }
-
- std::string prefix() const
- {
- return prefix_;
- }
-
- std::string static_dir() const
- {
- return static_dir_;
- }
-
- void set_added() {
- added_ = true;
- }
-
- bool is_added() {
- return added_;
- }
-
- DynamicRule& new_rule_dynamic(const std::string& rule)
- {
- std::string new_rule = '/' + prefix_ + rule;
- auto ruleObject = new DynamicRule(std::move(new_rule));
- ruleObject->custom_templates_base = templates_dir_;
- all_rules_.emplace_back(ruleObject);
-
- return *ruleObject;
- }
-
- template<uint64_t N>
- typename black_magic::arguments<N>::type::template rebind<TaggedRule>& new_rule_tagged(const std::string& rule)
- {
- std::string new_rule = '/' + prefix_ + rule;
- using RuleT = typename black_magic::arguments<N>::type::template rebind<TaggedRule>;
-
- auto ruleObject = new RuleT(std::move(new_rule));
- ruleObject->custom_templates_base = templates_dir_;
- all_rules_.emplace_back(ruleObject);
-
- return *ruleObject;
- }
-
- void register_blueprint(Blueprint& blueprint)
- {
- if (blueprints_.empty() || std::find(blueprints_.begin(), blueprints_.end(), &blueprint) == blueprints_.end())
- {
- apply_blueprint(blueprint);
- blueprints_.emplace_back(&blueprint);
- }
- else
- throw std::runtime_error("blueprint \"" + blueprint.prefix_ + "\" already exists in blueprint \"" + prefix_ + '\"');
- }
-
-
- CatchallRule& catchall_rule()
- {
- return catchall_rule_;
- }
-
- template<typename App, typename... Middlewares>
- void middlewares()
- {
- mw_indices_.push<App, Middlewares...>();
- }
-
- private:
- void apply_blueprint(Blueprint& blueprint)
- {
-
- blueprint.prefix_ = prefix_ + '/' + blueprint.prefix_;
- blueprint.static_dir_ = static_dir_ + '/' + blueprint.static_dir_;
- blueprint.templates_dir_ = templates_dir_ + '/' + blueprint.templates_dir_;
- for (auto& rule : blueprint.all_rules_)
- {
- std::string new_rule = '/' + prefix_ + rule->rule_;
- rule->rule_ = new_rule;
- }
- for (Blueprint* bp_child : blueprint.blueprints_)
- {
- Blueprint& bp_ref = *bp_child;
- apply_blueprint(bp_ref);
- }
- }
-
- std::string prefix_;
- std::string static_dir_;
- std::string templates_dir_;
- std::vector<std::unique_ptr<BaseRule>> all_rules_;
- CatchallRule catchall_rule_;
- std::vector<Blueprint*> blueprints_;
- detail::middleware_indices mw_indices_;
- bool added_{false};
-
- friend class Router;
- };
-
- /// Handles matching requests to existing rules and upgrade requests.
- class Router
- {
- public:
- Router()
- {}
-
- DynamicRule& new_rule_dynamic(const std::string& rule)
- {
- auto ruleObject = new DynamicRule(rule);
- all_rules_.emplace_back(ruleObject);
-
- return *ruleObject;
- }
-
- template<uint64_t N>
- typename black_magic::arguments<N>::type::template rebind<TaggedRule>& new_rule_tagged(const std::string& rule)
- {
- using RuleT = typename black_magic::arguments<N>::type::template rebind<TaggedRule>;
-
- auto ruleObject = new RuleT(rule);
- all_rules_.emplace_back(ruleObject);
-
- return *ruleObject;
- }
-
- CatchallRule& catchall_rule()
- {
- return catchall_rule_;
- }
-
- void internal_add_rule_object(const std::string& rule, BaseRule* ruleObject)
- {
- internal_add_rule_object(rule, ruleObject, INVALID_BP_ID, blueprints_);
- }
-
- void internal_add_rule_object(const std::string& rule, BaseRule* ruleObject, const uint16_t& BP_index, std::vector<Blueprint*>& blueprints)
- {
- bool has_trailing_slash = false;
- std::string rule_without_trailing_slash;
- if (rule.size() > 1 && rule.back() == '/')
- {
- has_trailing_slash = true;
- rule_without_trailing_slash = rule;
- rule_without_trailing_slash.pop_back();
- }
-
- ruleObject->mw_indices_.pack();
-
- ruleObject->foreach_method([&](int method) {
- per_methods_[method].rules.emplace_back(ruleObject);
- per_methods_[method].trie.add(rule, per_methods_[method].rules.size() - 1, BP_index != INVALID_BP_ID ? blueprints[BP_index]->prefix().length() : 0, BP_index);
-
- // directory case:
- // request to '/about' url matches '/about/' rule
- if (has_trailing_slash)
- {
- per_methods_[method].trie.add(rule_without_trailing_slash, RULE_SPECIAL_REDIRECT_SLASH, BP_index != INVALID_BP_ID ? blueprints[BP_index]->prefix().length() : 0, BP_index);
- }
- });
-
- ruleObject->set_added();
- }
-
- void register_blueprint(Blueprint& blueprint)
- {
- if (std::find(blueprints_.begin(), blueprints_.end(), &blueprint) == blueprints_.end())
- {
- blueprints_.emplace_back(&blueprint);
- }
- else
- throw std::runtime_error("blueprint \"" + blueprint.prefix_ + "\" already exists in router");
- }
-
- void get_recursive_child_methods(Blueprint* blueprint, std::vector<HTTPMethod>& methods)
- {
- //we only need to deal with children if the blueprint has absolutely no methods (meaning its index won't be added to the trie)
- if (blueprint->static_dir_.empty() && blueprint->all_rules_.empty())
- {
- for (Blueprint* bp : blueprint->blueprints_)
- {
- get_recursive_child_methods(bp, methods);
- }
- }
- else if (!blueprint->static_dir_.empty())
- methods.emplace_back(HTTPMethod::Get);
- for (auto& rule : blueprint->all_rules_)
- {
- rule->foreach_method([&methods](unsigned method) {
- HTTPMethod method_final = static_cast<HTTPMethod>(method);
- if (std::find(methods.begin(), methods.end(), method_final) == methods.end())
- methods.emplace_back(method_final);
- });
- }
- }
-
- void validate_bp() {
- //Take all the routes from the registered blueprints and add them to `all_rules_` to be processed.
- detail::middleware_indices blueprint_mw;
- validate_bp(blueprints_, blueprint_mw);
- }
-
- void validate_bp(std::vector<Blueprint*> blueprints, detail::middleware_indices& current_mw)
- {
- for (unsigned i = 0; i < blueprints.size(); i++)
- {
- Blueprint* blueprint = blueprints[i];
-
- if (blueprint->is_added()) continue;
-
- if (blueprint->static_dir_ == "" && blueprint->all_rules_.empty())
- {
- std::vector<HTTPMethod> methods;
- get_recursive_child_methods(blueprint, methods);
- for (HTTPMethod x : methods)
- {
- int i = static_cast<int>(x);
- per_methods_[i].trie.add(blueprint->prefix(), 0, blueprint->prefix().length(), i);
- }
- }
-
- current_mw.merge_back(blueprint->mw_indices_);
- for (auto& rule : blueprint->all_rules_)
- {
- if (rule && !rule->is_added())
- {
- auto upgraded = rule->upgrade();
- if (upgraded)
- rule = std::move(upgraded);
- rule->validate();
- rule->mw_indices_.merge_front(current_mw);
- internal_add_rule_object(rule->rule(), rule.get(), i, blueprints);
- }
- }
- validate_bp(blueprint->blueprints_, current_mw);
- current_mw.pop_back(blueprint->mw_indices_);
- blueprint->set_added();
- }
- }
-
- void validate()
- {
- for (auto& rule : all_rules_)
- {
- if (rule && !rule->is_added())
- {
- auto upgraded = rule->upgrade();
- if (upgraded)
- rule = std::move(upgraded);
- rule->validate();
- internal_add_rule_object(rule->rule(), rule.get());
- }
- }
- for (auto& per_method : per_methods_)
- {
- per_method.trie.validate();
- }
- }
-
- // TODO maybe add actual_method
- template<typename Adaptor>
- void handle_upgrade(const request& req, response& res, Adaptor&& adaptor)
- {
- if (req.method >= HTTPMethod::InternalMethodCount)
- return;
-
- auto& per_method = per_methods_[static_cast<int>(req.method)];
- auto& rules = per_method.rules;
- unsigned rule_index = per_method.trie.find(req.url).rule_index;
-
- if (!rule_index)
- {
- for (auto& per_method : per_methods_)
- {
- if (per_method.trie.find(req.url).rule_index)
- {
- CROW_LOG_DEBUG << "Cannot match method " << req.url << " " << method_name(req.method);
- res = response(405);
- res.end();
- return;
- }
- }
-
- CROW_LOG_INFO << "Cannot match rules " << req.url;
- res = response(404);
- res.end();
- return;
- }
-
- if (rule_index >= rules.size())
- throw std::runtime_error("Trie internal structure corrupted!");
-
- if (rule_index == RULE_SPECIAL_REDIRECT_SLASH)
- {
- CROW_LOG_INFO << "Redirecting to a url with trailing slash: " << req.url;
- res = response(301);
-
- // TODO(ipkn) absolute url building
- if (req.get_header_value("Host").empty())
- {
- res.add_header("Location", req.url + "/");
- }
- else
- {
- res.add_header("Location", "http://" + req.get_header_value("Host") + req.url + "/");
- }
- res.end();
- return;
- }
-
- CROW_LOG_DEBUG << "Matched rule (upgrade) '" << rules[rule_index]->rule_ << "' " << static_cast<uint32_t>(req.method) << " / " << rules[rule_index]->get_methods();
-
- try
- {
- rules[rule_index]->handle_upgrade(req, res, std::move(adaptor));
- }
- catch (...)
- {
- exception_handler_(res);
- res.end();
- return;
- }
- }
-
- void get_found_bp(std::vector<uint16_t>& bp_i, std::vector<Blueprint*>& blueprints, std::vector<Blueprint*>& found_bps, uint16_t index = 0)
- {
- // This statement makes 3 assertions:
- // 1. The index is above 0.
- // 2. The index does not lie outside the given blueprint list.
- // 3. The next blueprint we're adding has a prefix that starts the same as the already added blueprint + a slash (the rest is irrelevant).
- //
- // This is done to prevent a blueprint that has a prefix of "bp_prefix2" to be assumed as a child of one that has "bp_prefix".
- //
- // If any of the assertions is untrue, we delete the last item added, and continue using the blueprint list of the blueprint found before, the topmost being the router's list
- auto verify_prefix = [&bp_i, &index, &blueprints, &found_bps]() {
- return index > 0 &&
- bp_i[index] < blueprints.size() &&
- blueprints[bp_i[index]]->prefix().substr(0, found_bps[index - 1]->prefix().length() + 1).compare(std::string(found_bps[index - 1]->prefix() + '/')) == 0;
- };
- if (index < bp_i.size())
- {
-
- if (verify_prefix())
- {
- found_bps.push_back(blueprints[bp_i[index]]);
- get_found_bp(bp_i, found_bps.back()->blueprints_, found_bps, ++index);
- }
- else
- {
- if (found_bps.size() < 2)
- {
- found_bps.clear();
- found_bps.push_back(blueprints_[bp_i[index]]);
- }
- else
- {
- found_bps.pop_back();
- Blueprint* last_element = found_bps.back();
- found_bps.push_back(last_element->blueprints_[bp_i[index]]);
- }
- get_found_bp(bp_i, found_bps.back()->blueprints_, found_bps, ++index);
- }
- }
- }
-
- /// Is used to handle errors, you insert the error code, found route, request, and response. and it'll either call the appropriate catchall route (considering the blueprint system) and send you a status string (which is mainly used for debug messages), or just set the response code to the proper error code.
- std::string get_error(unsigned short code, routing_handle_result& found, const request& req, response& res)
- {
- res.code = code;
- std::vector<Blueprint*> bps_found;
- get_found_bp(found.blueprint_indices, blueprints_, bps_found);
- for (int i = bps_found.size() - 1; i > 0; i--)
- {
- std::vector<uint16_t> bpi = found.blueprint_indices;
- if (bps_found[i]->catchall_rule().has_handler())
- {
- try
- {
- bps_found[i]->catchall_rule().handler_(req, res);
- }
- catch (...)
- {
- exception_handler_(res);
- }
-#ifdef CROW_ENABLE_DEBUG
- return std::string("Redirected to Blueprint \"" + bps_found[i]->prefix() + "\" Catchall rule");
-#else
- return std::string();
-#endif
- }
- }
- if (catchall_rule_.has_handler())
- {
- try
- {
- catchall_rule_.handler_(req, res);
- }
- catch (...)
- {
- exception_handler_(res);
- }
-#ifdef CROW_ENABLE_DEBUG
- return std::string("Redirected to global Catchall rule");
-#else
- return std::string();
-#endif
- }
- return std::string();
- }
-
- std::unique_ptr<routing_handle_result> handle_initial(request& req, response& res)
- {
- HTTPMethod method_actual = req.method;
-
- std::unique_ptr<routing_handle_result> found{
- new routing_handle_result(
- 0,
- std::vector<uint16_t>(),
- routing_params(),
- HTTPMethod::InternalMethodCount)}; // This is always returned to avoid a null pointer dereference.
-
- // NOTE(EDev): This most likely will never run since the parser should handle this situation and close the connection before it gets here.
- if (CROW_UNLIKELY(req.method >= HTTPMethod::InternalMethodCount))
- return found;
- else if (req.method == HTTPMethod::Head)
- {
- *found = per_methods_[static_cast<int>(method_actual)].trie.find(req.url);
- // support HEAD requests using GET if not defined as method for the requested URL
- if (!found->rule_index)
- {
- method_actual = HTTPMethod::Get;
- *found = per_methods_[static_cast<int>(method_actual)].trie.find(req.url);
- if (!found->rule_index) // If a route is still not found, return a 404 without executing the rest of the HEAD specific code.
- {
- CROW_LOG_DEBUG << "Cannot match rules " << req.url;
- res = response(404); //TODO(EDev): Should this redirect to catchall?
- res.end();
- return found;
- }
- }
-
- res.skip_body = true;
- found->method = method_actual;
- return found;
- }
- else if (req.method == HTTPMethod::Options)
- {
- std::string allow = "OPTIONS, HEAD, ";
-
- if (req.url == "/*")
- {
- for (int i = 0; i < static_cast<int>(HTTPMethod::InternalMethodCount); i++)
- {
- if (static_cast<int>(HTTPMethod::Head) == i)
- continue; // HEAD is always allowed
-
- if (!per_methods_[i].trie.is_empty())
- {
- allow += method_name(static_cast<HTTPMethod>(i)) + ", ";
- }
- }
- allow = allow.substr(0, allow.size() - 2);
- res = response(204);
- res.set_header("Allow", allow);
- res.end();
- found->method = method_actual;
- return found;
- }
- else
- {
- bool rules_matched = false;
- for (int i = 0; i < static_cast<int>(HTTPMethod::InternalMethodCount); i++)
- {
- if (per_methods_[i].trie.find(req.url).rule_index)
- {
- rules_matched = true;
-
- if (static_cast<int>(HTTPMethod::Head) == i)
- continue; // HEAD is always allowed
-
- allow += method_name(static_cast<HTTPMethod>(i)) + ", ";
- }
- }
- if (rules_matched)
- {
- allow = allow.substr(0, allow.size() - 2);
- res = response(204);
- res.set_header("Allow", allow);
- res.end();
- found->method = method_actual;
- return found;
- }
- else
- {
- CROW_LOG_DEBUG << "Cannot match rules " << req.url;
- res = response(404); //TODO(EDev): Should this redirect to catchall?
- res.end();
- return found;
- }
- }
- }
- else // Every request that isn't a HEAD or OPTIONS request
- {
- *found = per_methods_[static_cast<int>(method_actual)].trie.find(req.url);
- // TODO(EDev): maybe ending the else here would allow the requests coming from above (after removing the return statement) to be checked on whether they actually point to a route
- if (!found->rule_index)
- {
- for (auto& per_method : per_methods_)
- {
- if (per_method.trie.find(req.url).rule_index) //Route found, but in another method
- {
- const std::string error_message(get_error(405, *found, req, res));
- CROW_LOG_DEBUG << "Cannot match method " << req.url << " " << method_name(method_actual) << ". " << error_message;
- res.end();
- return found;
- }
- }
- //Route does not exist anywhere
-
- const std::string error_message(get_error(404, *found, req, res));
- CROW_LOG_DEBUG << "Cannot match rules " << req.url << ". " << error_message;
- res.end();
- return found;
- }
-
- found->method = method_actual;
- return found;
- }
- }
-
- template<typename App>
- void handle(request& req, response& res, routing_handle_result found)
- {
- HTTPMethod method_actual = found.method;
- auto& rules = per_methods_[static_cast<int>(method_actual)].rules;
- unsigned rule_index = found.rule_index;
-
- if (rule_index >= rules.size())
- throw std::runtime_error("Trie internal structure corrupted!");
-
- if (rule_index == RULE_SPECIAL_REDIRECT_SLASH)
- {
- CROW_LOG_INFO << "Redirecting to a url with trailing slash: " << req.url;
- res = response(301);
-
- // TODO(ipkn) absolute url building
- if (req.get_header_value("Host").empty())
- {
- res.add_header("Location", req.url + "/");
- }
- else
- {
- res.add_header("Location", "http://" + req.get_header_value("Host") + req.url + "/");
- }
- res.end();
- return;
- }
-
- CROW_LOG_DEBUG << "Matched rule '" << rules[rule_index]->rule_ << "' " << static_cast<uint32_t>(req.method) << " / " << rules[rule_index]->get_methods();
-
- try
- {
- auto& rule = rules[rule_index];
- handle_rule<App>(rule, req, res, found.r_params);
- }
- catch (...)
- {
- exception_handler_(res);
- res.end();
- return;
- }
- }
-
- template<typename App>
- typename std::enable_if<std::tuple_size<typename App::mw_container_t>::value != 0, void>::type
- handle_rule(BaseRule* rule, crow::request& req, crow::response& res, const crow::routing_params& rp)
- {
- if (!rule->mw_indices_.empty())
- {
- auto& ctx = *reinterpret_cast<typename App::context_t*>(req.middleware_context);
- auto& container = *reinterpret_cast<typename App::mw_container_t*>(req.middleware_container);
- detail::middleware_call_criteria_dynamic<false> crit_fwd(rule->mw_indices_.indices());
-
- auto glob_completion_handler = std::move(res.complete_request_handler_);
- res.complete_request_handler_ = [] {};
-
- detail::middleware_call_helper<decltype(crit_fwd),
- 0, typename App::context_t, typename App::mw_container_t>(crit_fwd, container, req, res, ctx);
-
- if (res.completed_)
- {
- glob_completion_handler();
- return;
- }
-
- res.complete_request_handler_ = [&rule, &ctx, &container, &req, &res, glob_completion_handler] {
- detail::middleware_call_criteria_dynamic<true> crit_bwd(rule->mw_indices_.indices());
-
- detail::after_handlers_call_helper<
- decltype(crit_bwd),
- std::tuple_size<typename App::mw_container_t>::value - 1,
- typename App::context_t,
- typename App::mw_container_t>(crit_bwd, container, ctx, req, res);
- glob_completion_handler();
- };
- }
- rule->handle(req, res, rp);
- }
-
- template<typename App>
- typename std::enable_if<std::tuple_size<typename App::mw_container_t>::value == 0, void>::type
- handle_rule(BaseRule* rule, crow::request& req, crow::response& res, const crow::routing_params& rp)
- {
- rule->handle(req, res, rp);
- }
-
- void debug_print()
- {
- for (int i = 0; i < static_cast<int>(HTTPMethod::InternalMethodCount); i++)
- {
- Trie& trie_ = per_methods_[i].trie;
- if (!trie_.is_empty())
- {
- CROW_LOG_DEBUG << method_name(static_cast<HTTPMethod>(i));
- trie_.debug_print();
- }
- }
- }
-
- std::vector<Blueprint*>& blueprints()
- {
- return blueprints_;
- }
-
- std::function<void(crow::response&)>& exception_handler()
- {
- return exception_handler_;
- }
-
- static void default_exception_handler(response& res)
- {
- // any uncaught exceptions become 500s
- res = response(500);
-
- try
- {
- throw;
- }
- catch (const std::exception& e)
- {
- CROW_LOG_ERROR << "An uncaught exception occurred: " << e.what();
- }
- catch (...)
- {
- CROW_LOG_ERROR << "An uncaught exception occurred. The type was unknown so no information was available.";
- }
- }
-
- private:
- CatchallRule catchall_rule_;
-
- struct PerMethod
- {
- std::vector<BaseRule*> rules;
- Trie trie;
-
- // rule index 0, 1 has special meaning; preallocate it to avoid duplication.
- PerMethod():
- rules(2) {}
- };
- std::array<PerMethod, static_cast<int>(HTTPMethod::InternalMethodCount)> per_methods_;
- std::vector<std::unique_ptr<BaseRule>> all_rules_;
- std::vector<Blueprint*> blueprints_;
- std::function<void(crow::response&)> exception_handler_ = &default_exception_handler;
- };
-} // namespace crow
-
-
-namespace crow
-{
- struct CORSHandler;
-
- /// Used for tuning CORS policies
- struct CORSRules
- {
- friend struct crow::CORSHandler;
-
- /// Set Access-Control-Allow-Origin. Default is "*"
- CORSRules& origin(const std::string& origin)
- {
- origin_ = origin;
- return *this;
- }
-
- /// Set Access-Control-Allow-Methods. Default is "*"
- CORSRules& methods(crow::HTTPMethod method)
- {
- add_list_item(methods_, crow::method_name(method));
- return *this;
- }
-
- /// Set Access-Control-Allow-Methods. Default is "*"
- template<typename... Methods>
- CORSRules& methods(crow::HTTPMethod method, Methods... method_list)
- {
- add_list_item(methods_, crow::method_name(method));
- methods(method_list...);
- return *this;
- }
-
- /// Set Access-Control-Allow-Headers. Default is "*"
- CORSRules& headers(const std::string& header)
- {
- add_list_item(headers_, header);
- return *this;
- }
-
- /// Set Access-Control-Allow-Headers. Default is "*"
- template<typename... Headers>
- CORSRules& headers(const std::string& header, Headers... header_list)
- {
- add_list_item(headers_, header);
- headers(header_list...);
- return *this;
- }
-
- /// Set Access-Control-Max-Age. Default is none
- CORSRules& max_age(int max_age)
- {
- max_age_ = std::to_string(max_age);
- return *this;
- }
-
- /// Enable Access-Control-Allow-Credentials
- CORSRules& allow_credentials()
- {
- allow_credentials_ = true;
- return *this;
- }
-
- /// Ignore CORS and don't send any headers
- void ignore()
- {
- ignore_ = true;
- }
-
- /// Handle CORS on specific prefix path
- CORSRules& prefix(const std::string& prefix);
-
- /// Handle CORS for specific blueprint
- CORSRules& blueprint(const Blueprint& bp);
-
- /// Global CORS policy
- CORSRules& global();
-
- private:
- CORSRules() = delete;
- CORSRules(CORSHandler* handler):
- handler_(handler) {}
-
- /// build comma separated list
- void add_list_item(std::string& list, const std::string& val)
- {
- if (list == "*") list = "";
- if (list.size() > 0) list += ", ";
- list += val;
- }
-
- /// Set header `key` to `value` if it is not set
- void set_header_no_override(const std::string& key, const std::string& value, crow::response& res)
- {
- if (value.size() == 0) return;
- if (!get_header_value(res.headers, key).empty()) return;
- res.add_header(key, value);
- }
-
- /// Set response headers
- void apply(crow::response& res)
- {
- if (ignore_) return;
- set_header_no_override("Access-Control-Allow-Origin", origin_, res);
- set_header_no_override("Access-Control-Allow-Methods", methods_, res);
- set_header_no_override("Access-Control-Allow-Headers", headers_, res);
- set_header_no_override("Access-Control-Max-Age", max_age_, res);
- if (allow_credentials_) set_header_no_override("Access-Control-Allow-Credentials", "true", res);
- }
-
- bool ignore_ = false;
- // TODO: support multiple origins that are dynamically selected
- std::string origin_ = "*";
- std::string methods_ = "*";
- std::string headers_ = "*";
- std::string max_age_;
- bool allow_credentials_ = false;
-
- CORSHandler* handler_;
- };
-
- /// CORSHandler is a global middleware for setting CORS headers.
-
- ///
- /// By default, it sets Access-Control-Allow-Origin/Methods/Headers to "*".
- /// The default behaviour can be changed with the `global()` cors rule.
- /// Additional rules for prexies can be added with `prefix()`.
- struct CORSHandler
- {
- struct context
- {};
-
- void before_handle(crow::request& /*req*/, crow::response& /*res*/, context& /*ctx*/)
- {}
-
- void after_handle(crow::request& req, crow::response& res, context& /*ctx*/)
- {
- auto& rule = find_rule(req.url);
- rule.apply(res);
- }
-
- /// Handle CORS on a specific prefix path
- CORSRules& prefix(const std::string& prefix)
- {
- rules.emplace_back(prefix, CORSRules(this));
- return rules.back().second;
- }
-
- /// Handle CORS for a specific blueprint
- CORSRules& blueprint(const Blueprint& bp)
- {
- rules.emplace_back(bp.prefix(), CORSRules(this));
- return rules.back().second;
- }
-
- /// Get the global CORS policy
- CORSRules& global()
- {
- return default_;
- }
-
- private:
- CORSRules& find_rule(const std::string& path)
- {
- // TODO: use a trie in case of many rules
- for (auto& rule : rules)
- {
- // Check if path starts with a rules prefix
- if (path.rfind(rule.first, 0) == 0)
- {
- return rule.second;
- }
- }
- return default_;
- }
-
- std::vector<std::pair<std::string, CORSRules>> rules;
- CORSRules default_ = CORSRules(this);
- };
-
- inline CORSRules& CORSRules::prefix(const std::string& prefix)
- {
- return handler_->prefix(prefix);
- }
-
- inline CORSRules& CORSRules::blueprint(const Blueprint& bp)
- {
- return handler_->blueprint(bp);
- }
-
- inline CORSRules& CORSRules::global()
- {
- return handler_->global();
- }
-
-} // namespace crow
-
-/**
- * \file crow/app.h
- * \brief This file includes the definition of the crow::Crow class,
- * the crow::App and crow::SimpleApp aliases, and some macros.
- *
- * In this file are defined:
- * - crow::Crow
- * - crow::App
- * - crow::SimpleApp
- * - \ref CROW_ROUTE
- * - \ref CROW_BP_ROUTE
- * - \ref CROW_WEBSOCKET_ROUTE
- * - \ref CROW_MIDDLEWARES
- * - \ref CROW_CATCHALL_ROUTE
- * - \ref CROW_BP_CATCHALL_ROUTE
- */
-
-
-#include <chrono>
-#include <string>
-#include <functional>
-#include <memory>
-#include <future>
-#include <cstdint>
-#include <type_traits>
-#include <thread>
-#include <condition_variable>
-
-#ifdef CROW_ENABLE_COMPRESSION
-#endif // #ifdef CROW_ENABLE_COMPRESSION
-
-
-#ifdef CROW_MSVC_WORKAROUND
-
-#define CROW_ROUTE(app, url) app.route_dynamic(url) // See the documentation in the comment below.
-#define CROW_BP_ROUTE(blueprint, url) blueprint.new_rule_dynamic(url) // See the documentation in the comment below.
-
-#else // #ifdef CROW_MSVC_WORKAROUND
-
-/**
- * \def CROW_ROUTE(app, url)
- * \brief Creates a route for app using a rule.
- *
- * It use crow::Crow::route_dynamic or crow::Crow::route to define
- * a rule for your application. It's usage is like this:
- *
- * ```cpp
- * auto app = crow::SimpleApp(); // or crow::App()
- * CROW_ROUTE(app, "/")
- * ([](){
- * return "<h1>Hello, world!</h1>";
- * });
- * ```
- *
- * This is the recommended way to define routes in a crow application.
- * \see [Page of guide "Routes"](https://crowcpp.org/master/guides/routes/).
- */
-#define CROW_ROUTE(app, url) app.template route<crow::black_magic::get_parameter_tag(url)>(url)
-
-/**
- * \def CROW_BP_ROUTE(blueprint, url)
- * \brief Creates a route for a blueprint using a rule.
- *
- * It may use crow::Blueprint::new_rule_dynamic or
- * crow::Blueprint::new_rule_tagged to define a new rule for
- * an given blueprint. It's usage is similar
- * to CROW_ROUTE macro:
- *
- * ```cpp
- * crow::Blueprint my_bp();
- * CROW_BP_ROUTE(my_bp, "/")
- * ([](){
- * return "<h1>Hello, world!</h1>";
- * });
- * ```
- *
- * This is the recommended way to define routes in a crow blueprint
- * because of its compile-time capabilities.
- *
- * \see [Page of the guide "Blueprints"](https://crowcpp.org/master/guides/blueprints/).
- */
-#define CROW_BP_ROUTE(blueprint, url) blueprint.new_rule_tagged<crow::black_magic::get_parameter_tag(url)>(url)
-
-/**
- * \def CROW_WEBSOCKET_ROUTE(app, url)
- * \brief Defines WebSocket route for app.
- *
- * It binds a WebSocket route to app. Easy solution to implement
- * WebSockets in your app. The usage syntax of this macro is
- * like this:
- *
- * ```cpp
- * auto app = crow::SimpleApp(); // or crow::App()
- * CROW_WEBSOCKET_ROUTE(app, "/ws")
- * .onopen([&](crow::websocket::connection& conn){
- * do_something();
- * })
- * .onclose([&](crow::websocket::connection& conn, const std::string& reason){
- * do_something();
- * })
- * .onmessage([&](crow::websocket::connection&, const std::string& data, bool is_binary){
- * if (is_binary)
- * do_something(data);
- * else
- * do_something_else(data);
- * });
- * ```
- *
- * \see [Page of the guide "WebSockets"](https://crowcpp.org/master/guides/websockets/).
- */
-#define CROW_WEBSOCKET_ROUTE(app, url) app.route<crow::black_magic::get_parameter_tag(url)>(url).websocket<std::remove_reference<decltype(app)>::type>(&app)
-
-/**
- * \def CROW_MIDDLEWARES(app, ...)
- * \brief Enable a Middleware for an specific route in app
- * or blueprint.
- *
- * It defines the usage of a Middleware in one route. And it
- * can be used in both crow::SimpleApp (and crow::App) instances and
- * crow::Blueprint. Its usage syntax is like this:
- *
- * ```cpp
- * auto app = crow::SimpleApp(); // or crow::App()
- * CROW_ROUTE(app, "/with_middleware")
- * .CROW_MIDDLEWARES(app, LocalMiddleware) // Can be used more than one
- * ([]() { // middleware.
- * return "Hello world!";
- * });
- * ```
- *
- * \see [Page of the guide "Middlewares"](https://crowcpp.org/master/guides/middleware/).
- */
-#define CROW_MIDDLEWARES(app, ...) template middlewares<typename std::remove_reference<decltype(app)>::type, __VA_ARGS__>()
-
-#endif // #ifdef CROW_MSVC_WORKAROUND
-
-/**
- * \def CROW_CATCHALL_ROUTE(app)
- * \brief Defines a custom catchall route for app using a
- * custom rule.
- *
- * It defines a handler when the client make a request for an
- * undefined route. Instead of just reply with a `404` status
- * code (default behavior), you can define a custom handler
- * using this macro.
- *
- * \see [Page of the guide "Routes" (Catchall routes)](https://crowcpp.org/master/guides/routes/#catchall-routes).
- */
-#define CROW_CATCHALL_ROUTE(app) app.catchall_route()
-
-/**
- * \def CROW_BP_CATCHALL_ROUTE(blueprint)
- * \brief Defines a custom catchall route for blueprint
- * using a custom rule.
- *
- * It defines a handler when the client make a request for an
- * undefined route in the blueprint.
- *
- * \see [Page of the guide "Blueprint" (Define a custom Catchall route)](https://crowcpp.org/master/guides/blueprints/#define-a-custom-catchall-route).
- */
-#define CROW_BP_CATCHALL_ROUTE(blueprint) blueprint.catchall_rule()
-
-
-/**
- * \namespace crow
- * \brief The main namespace of the library. In this namespace
- * is defined the most important classes and functions of the
- * library.
- *
- * Within this namespace, the Crow class, Router class, Connection
- * class, and other are defined.
- */
-namespace crow
-{
-#ifdef CROW_ENABLE_SSL
- using ssl_context_t = asio::ssl::context;
-#endif
- /**
- * \class Crow
- * \brief The main server application class.
- *
- * Use crow::SimpleApp or crow::App<Middleware1, Middleware2, etc...> instead of
- * directly instantiate this class.
- */
- template<typename... Middlewares>
- class Crow
- {
- public:
- /// \brief This is the crow application
- using self_t = Crow;
-
- /// \brief The HTTP server
- using server_t = Server<Crow, SocketAdaptor, Middlewares...>;
-
-#ifdef CROW_ENABLE_SSL
- /// \brief An HTTP server that runs on SSL with an SSLAdaptor
- using ssl_server_t = Server<Crow, SSLAdaptor, Middlewares...>;
-#endif
- Crow()
- {}
-
- /// \brief Construct Crow with a subset of middleware
- template<typename... Ts>
- Crow(Ts&&... ts):
- middlewares_(make_middleware_tuple(std::forward<Ts>(ts)...))
- {}
-
- /// \brief Process an Upgrade request
- ///
- /// Currently used to upgrade an HTTP connection to a WebSocket connection
- template<typename Adaptor>
- void handle_upgrade(const request& req, response& res, Adaptor&& adaptor)
- {
- router_.handle_upgrade(req, res, adaptor);
- }
-
- /// \brief Process only the method and URL of a request and provide a route (or an error response)
- std::unique_ptr<routing_handle_result> handle_initial(request& req, response& res)
- {
- return router_.handle_initial(req, res);
- }
-
- /// \brief Process the fully parsed request and generate a response for it
- void handle(request& req, response& res, std::unique_ptr<routing_handle_result>& found)
- {
- router_.handle<self_t>(req, res, *found);
- }
-
- /// \brief Process a fully parsed request from start to finish (primarily used for debugging)
- void handle_full(request& req, response& res)
- {
- auto found = handle_initial(req, res);
- if (found->rule_index)
- handle(req, res, found);
- }
-
- /// \brief Create a dynamic route using a rule (**Use CROW_ROUTE instead**)
- DynamicRule& route_dynamic(const std::string& rule)
- {
- return router_.new_rule_dynamic(rule);
- }
-
- /// \brief Create a route using a rule (**Use CROW_ROUTE instead**)
- template<uint64_t Tag>
-#ifdef CROW_GCC83_WORKAROUND
- auto& route(const std::string& rule)
-#else
- auto route(const std::string& rule)
-#endif
-#if defined CROW_CAN_USE_CPP17 && !defined CROW_GCC83_WORKAROUND
- -> typename std::invoke_result<decltype(&Router::new_rule_tagged<Tag>), Router, const std::string&>::type
-#elif !defined CROW_GCC83_WORKAROUND
- -> typename std::result_of<decltype (&Router::new_rule_tagged<Tag>)(Router, const std::string&)>::type
-#endif
- {
- return router_.new_rule_tagged<Tag>(rule);
- }
-
- /// \brief Create a route for any requests without a proper route (**Use CROW_CATCHALL_ROUTE instead**)
- CatchallRule& catchall_route()
- {
- return router_.catchall_rule();
- }
-
- /// \brief Set the default max payload size for websockets
- self_t& websocket_max_payload(uint64_t max_payload)
- {
- max_payload_ = max_payload;
- return *this;
- }
-
- /// \brief Get the default max payload size for websockets
- uint64_t websocket_max_payload()
- {
- return max_payload_;
- }
-
- self_t& signal_clear()
- {
- signals_.clear();
- return *this;
- }
-
- self_t& signal_add(int signal_number)
- {
- signals_.push_back(signal_number);
- return *this;
- }
-
- std::vector<int> signals()
- {
- return signals_;
- }
-
- /// \brief Set the port that Crow will handle requests on
- self_t& port(std::uint16_t port)
- {
- port_ = port;
- return *this;
- }
-
- /// \brief Get the port that Crow will handle requests on
- std::uint16_t port()
- {
- return port_;
- }
-
- /// \brief Set the connection timeout in seconds (default is 5)
- self_t& timeout(std::uint8_t timeout)
- {
- timeout_ = timeout;
- return *this;
- }
-
- /// \brief Set the server name
- self_t& server_name(std::string server_name)
- {
- server_name_ = server_name;
- return *this;
- }
-
- /// \brief The IP address that Crow will handle requests on (default is 0.0.0.0)
- self_t& bindaddr(std::string bindaddr)
- {
- bindaddr_ = bindaddr;
- return *this;
- }
-
- /// \brief Get the address that Crow will handle requests on
- std::string bindaddr()
- {
- return bindaddr_;
- }
-
- /// \brief Run the server on multiple threads using all available threads
- self_t& multithreaded()
- {
- return concurrency(std::thread::hardware_concurrency());
- }
-
- /// \brief Run the server on multiple threads using a specific number
- self_t& concurrency(std::uint16_t concurrency)
- {
- if (concurrency < 2) // Crow can have a minimum of 2 threads running
- concurrency = 2;
- concurrency_ = concurrency;
- return *this;
- }
-
- /// \brief Get the number of threads that server is using
- std::uint16_t concurrency()
- {
- return concurrency_;
- }
-
- /// \brief Set the server's log level
- ///
- /// Possible values are:
- /// - crow::LogLevel::Debug (0)
- /// - crow::LogLevel::Info (1)
- /// - crow::LogLevel::Warning (2)
- /// - crow::LogLevel::Error (3)
- /// - crow::LogLevel::Critical (4)
- self_t& loglevel(LogLevel level)
- {
- crow::logger::setLogLevel(level);
- return *this;
- }
-
- /// \brief Set the response body size (in bytes) beyond which Crow automatically streams responses (Default is 1MiB)
- ///
- /// Any streamed response is unaffected by Crow's timer, and therefore won't timeout before a response is fully sent.
- self_t& stream_threshold(size_t threshold)
- {
- res_stream_threshold_ = threshold;
- return *this;
- }
-
- /// \brief Get the response body size (in bytes) beyond which Crow automatically streams responses
- size_t& stream_threshold()
- {
- return res_stream_threshold_;
- }
-
-
- self_t& register_blueprint(Blueprint& blueprint)
- {
- router_.register_blueprint(blueprint);
- return *this;
- }
-
- /// \brief Set the function to call to handle uncaught exceptions generated in routes (Default generates error 500).
- ///
- /// The function must have the following signature: void(crow::response&).
- /// It must set the response passed in argument to the function, which will be sent back to the client.
- /// See Router::default_exception_handler() for the default implementation.
- template<typename Func>
- self_t& exception_handler(Func&& f)
- {
- router_.exception_handler() = std::forward<Func>(f);
- return *this;
- }
-
- std::function<void(crow::response&)>& exception_handler()
- {
- return router_.exception_handler();
- }
-
- /// \brief Set a custom duration and function to run on every tick
- template<typename Duration, typename Func>
- self_t& tick(Duration d, Func f)
- {
- tick_interval_ = std::chrono::duration_cast<std::chrono::milliseconds>(d);
- tick_function_ = f;
- return *this;
- }
-
-#ifdef CROW_ENABLE_COMPRESSION
-
- self_t& use_compression(compression::algorithm algorithm)
- {
- comp_algorithm_ = algorithm;
- compression_used_ = true;
- return *this;
- }
-
- compression::algorithm compression_algorithm()
- {
- return comp_algorithm_;
- }
-
- bool compression_used() const
- {
- return compression_used_;
- }
-#endif
-
- /// \brief Apply blueprints
- void add_blueprint()
- {
-#if defined(__APPLE__) || defined(__MACH__)
- if (router_.blueprints().empty()) return;
-#endif
-
- for (Blueprint* bp : router_.blueprints())
- {
- if (bp->static_dir().empty()) continue;
-
- auto static_dir_ = crow::utility::normalize_path(bp->static_dir());
-
- bp->new_rule_tagged<crow::black_magic::get_parameter_tag(CROW_STATIC_ENDPOINT)>(CROW_STATIC_ENDPOINT)([static_dir_](crow::response& res, std::string file_path_partial) {
- utility::sanitize_filename(file_path_partial);
- res.set_static_file_info_unsafe(static_dir_ + file_path_partial);
- res.end();
- });
- }
-
- router_.validate_bp();
- }
-
- /// \brief Go through the rules, upgrade them if possible, and add them to the list of rules
- void add_static_dir()
- {
- if (are_static_routes_added()) return;
- auto static_dir_ = crow::utility::normalize_path(CROW_STATIC_DIRECTORY);
-
- route<crow::black_magic::get_parameter_tag(CROW_STATIC_ENDPOINT)>(CROW_STATIC_ENDPOINT)([static_dir_](crow::response& res, std::string file_path_partial) {
- utility::sanitize_filename(file_path_partial);
- res.set_static_file_info_unsafe(static_dir_ + file_path_partial);
- res.end();
- });
- set_static_routes_added();
- }
-
- /// \brief A wrapper for `validate()` in the router
- void validate()
- {
- router_.validate();
- }
-
- /// \brief Run the server
- void run()
- {
-#ifndef CROW_DISABLE_STATIC_DIR
- add_blueprint();
- add_static_dir();
-#endif
- validate();
-
-#ifdef CROW_ENABLE_SSL
- if (ssl_used_)
- {
- ssl_server_ = std::move(std::unique_ptr<ssl_server_t>(new ssl_server_t(this, bindaddr_, port_, server_name_, &middlewares_, concurrency_, timeout_, &ssl_context_)));
- ssl_server_->set_tick_function(tick_interval_, tick_function_);
- ssl_server_->signal_clear();
- for (auto snum : signals_)
- {
- ssl_server_->signal_add(snum);
- }
- notify_server_start();
- ssl_server_->run();
- }
- else
-#endif
- {
- server_ = std::move(std::unique_ptr<server_t>(new server_t(this, bindaddr_, port_, server_name_, &middlewares_, concurrency_, timeout_, nullptr)));
- server_->set_tick_function(tick_interval_, tick_function_);
- for (auto snum : signals_)
- {
- server_->signal_add(snum);
- }
- notify_server_start();
- server_->run();
- }
- }
-
- /// \brief Non-blocking version of \ref run()
- ///
- /// The output from this method needs to be saved into a variable!
- /// Otherwise the call will be made on the same thread.
- std::future<void> run_async()
- {
- return std::async(std::launch::async, [&] {
- this->run();
- });
- }
-
- /// \brief Stop the server
- void stop()
- {
-#ifdef CROW_ENABLE_SSL
- if (ssl_used_)
- {
- if (ssl_server_) { ssl_server_->stop(); }
- }
- else
-#endif
- {
- // TODO(EDev): Move these 6 lines to a method in http_server.
- std::vector<crow::websocket::connection*> websockets_to_close = websockets_;
- for (auto websocket : websockets_to_close)
- {
- CROW_LOG_INFO << "Quitting Websocket: " << websocket;
- websocket->close("Server Application Terminated");
- }
- if (server_) { server_->stop(); }
- }
- }
-
- void add_websocket(crow::websocket::connection* conn)
- {
- websockets_.push_back(conn);
- }
-
- void remove_websocket(crow::websocket::connection* conn)
- {
- websockets_.erase(std::remove(websockets_.begin(), websockets_.end(), conn), websockets_.end());
- }
-
- /// \brief Print the routing paths defined for each HTTP method
- void debug_print()
- {
- CROW_LOG_DEBUG << "Routing:";
- router_.debug_print();
- }
-
-
-#ifdef CROW_ENABLE_SSL
-
- /// \brief Use certificate and key files for SSL
- self_t& ssl_file(const std::string& crt_filename, const std::string& key_filename)
- {
- ssl_used_ = true;
- ssl_context_.set_verify_mode(asio::ssl::verify_peer);
- ssl_context_.set_verify_mode(asio::ssl::verify_client_once);
- ssl_context_.use_certificate_file(crt_filename, ssl_context_t::pem);
- ssl_context_.use_private_key_file(key_filename, ssl_context_t::pem);
- ssl_context_.set_options(
- asio::ssl::context::default_workarounds | asio::ssl::context::no_sslv2 | asio::ssl::context::no_sslv3);
- return *this;
- }
-
- /// \brief Use `.pem` file for SSL
- self_t& ssl_file(const std::string& pem_filename)
- {
- ssl_used_ = true;
- ssl_context_.set_verify_mode(asio::ssl::verify_peer);
- ssl_context_.set_verify_mode(asio::ssl::verify_client_once);
- ssl_context_.load_verify_file(pem_filename);
- ssl_context_.set_options(
- asio::ssl::context::default_workarounds | asio::ssl::context::no_sslv2 | asio::ssl::context::no_sslv3);
- return *this;
- }
-
- /// \brief Use certificate chain and key files for SSL
- self_t& ssl_chainfile(const std::string& crt_filename, const std::string& key_filename)
- {
- ssl_used_ = true;
- ssl_context_.set_verify_mode(asio::ssl::verify_peer);
- ssl_context_.set_verify_mode(asio::ssl::verify_client_once);
- ssl_context_.use_certificate_chain_file(crt_filename);
- ssl_context_.use_private_key_file(key_filename, ssl_context_t::pem);
- ssl_context_.set_options(
- asio::ssl::context::default_workarounds | asio::ssl::context::no_sslv2 | asio::ssl::context::no_sslv3);
- return *this;
- }
-
- self_t& ssl(asio::ssl::context&& ctx)
- {
- ssl_used_ = true;
- ssl_context_ = std::move(ctx);
- return *this;
- }
-
- bool ssl_used() const
- {
- return ssl_used_;
- }
-#else
-
- template<typename T, typename... Remain>
- self_t& ssl_file(T&&, Remain&&...)
- {
- // We can't call .ssl() member function unless CROW_ENABLE_SSL is defined.
- static_assert(
- // make static_assert dependent to T; always false
- std::is_base_of<T, void>::value,
- "Define CROW_ENABLE_SSL to enable ssl support.");
- return *this;
- }
-
- template<typename T, typename... Remain>
- self_t& ssl_chainfile(T&&, Remain&&...)
- {
- // We can't call .ssl() member function unless CROW_ENABLE_SSL is defined.
- static_assert(
- // make static_assert dependent to T; always false
- std::is_base_of<T, void>::value,
- "Define CROW_ENABLE_SSL to enable ssl support.");
- return *this;
- }
-
- template<typename T>
- self_t& ssl(T&&)
- {
- // We can't call .ssl() member function unless CROW_ENABLE_SSL is defined.
- static_assert(
- // make static_assert dependent to T; always false
- std::is_base_of<T, void>::value,
- "Define CROW_ENABLE_SSL to enable ssl support.");
- return *this;
- }
-
- bool ssl_used() const
- {
- return false;
- }
-#endif
-
- // middleware
- using context_t = detail::context<Middlewares...>;
- using mw_container_t = std::tuple<Middlewares...>;
- template<typename T>
- typename T::context& get_context(const request& req)
- {
- static_assert(black_magic::contains<T, Middlewares...>::value, "App doesn't have the specified middleware type.");
- auto& ctx = *reinterpret_cast<context_t*>(req.middleware_context);
- return ctx.template get<T>();
- }
-
- template<typename T>
- T& get_middleware()
- {
- return utility::get_element_by_type<T, Middlewares...>(middlewares_);
- }
-
- /// \brief Wait until the server has properly started
- void wait_for_server_start()
- {
- {
- std::unique_lock<std::mutex> lock(start_mutex_);
- if (!server_started_)
- cv_started_.wait(lock);
- }
- if (server_)
- server_->wait_for_start();
-#ifdef CROW_ENABLE_SSL
- else if (ssl_server_)
- ssl_server_->wait_for_start();
-#endif
- }
-
- private:
- template<typename... Ts>
- std::tuple<Middlewares...> make_middleware_tuple(Ts&&... ts)
- {
- auto fwd = std::forward_as_tuple((ts)...);
- return std::make_tuple(
- std::forward<Middlewares>(
- black_magic::tuple_extract<Middlewares, decltype(fwd)>(fwd))...);
- }
-
- /// \brief Notify anything using \ref wait_for_server_start() to proceed
- void notify_server_start()
- {
- std::unique_lock<std::mutex> lock(start_mutex_);
- server_started_ = true;
- cv_started_.notify_all();
- }
-
- void set_static_routes_added() {
- static_routes_added_ = true;
- }
-
- bool are_static_routes_added() {
- return static_routes_added_;
- }
-
- private:
- std::uint8_t timeout_{5};
- uint16_t port_ = 80;
- uint16_t concurrency_ = 2;
- uint64_t max_payload_{UINT64_MAX};
- std::string server_name_ = std::string("Crow/") + VERSION;
- std::string bindaddr_ = "0.0.0.0";
- size_t res_stream_threshold_ = 1048576;
- Router router_;
- bool static_routes_added_{false};
-
-#ifdef CROW_ENABLE_COMPRESSION
- compression::algorithm comp_algorithm_;
- bool compression_used_{false};
-#endif
-
- std::chrono::milliseconds tick_interval_;
- std::function<void()> tick_function_;
-
- std::tuple<Middlewares...> middlewares_;
-
-#ifdef CROW_ENABLE_SSL
- std::unique_ptr<ssl_server_t> ssl_server_;
- bool ssl_used_{false};
- ssl_context_t ssl_context_{asio::ssl::context::sslv23};
-#endif
-
- std::unique_ptr<server_t> server_;
-
- std::vector<int> signals_{SIGINT, SIGTERM};
-
- bool server_started_{false};
- std::condition_variable cv_started_;
- std::mutex start_mutex_;
- std::vector<crow::websocket::connection*> websockets_;
- };
-
- /// \brief Alias of Crow<Middlewares...>. Useful if you want
- /// a instance of an Crow application that require Middlewares
- template<typename... Middlewares>
- using App = Crow<Middlewares...>;
-
- /// \brief Alias of Crow<>. Useful if you want a instance of
- /// an Crow application that doesn't require of Middlewares
- using SimpleApp = Crow<>;
-} // namespace crow
-
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