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Copy pathhttp_response.hpp
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306 lines (256 loc) · 9.27 KB
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/*
This file is part of libhttpserver
Copyright (C) 2011, 2012, 2013, 2014, 2015 Sebastiano Merlino
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA
*/
#if !defined (_HTTPSERVER_HPP_INSIDE_) && !defined (HTTPSERVER_COMPILATION)
#error "Only <httpserver.hpp> or <httpserverpp> can be included directly."
#endif
#ifndef _HTTP_RESPONSE_HPP_
#define _HTTP_RESPONSE_HPP_
#include <map>
#include <utility>
#include <string>
#include <iosfwd>
#include <stdint.h>
#include <vector>
#include "httpserver/binders.hpp"
#include "httpserver/http_utils.hpp"
struct MHD_Connection;
struct MHD_Response;
namespace httpserver
{
class webserver;
class http_response_builder;
namespace details
{
struct http_response_ptr;
ssize_t cb(void*, uint64_t, char*, size_t);
struct cache_entry;
};
class bad_caching_attempt: public std::exception
{
virtual const char* what() const throw()
{
return "You cannot pass ce = 0x0 without key!";
}
};
typedef ssize_t(*cycle_callback_ptr)(char*, size_t);
/**
* Class representing an abstraction for an Http Response. It is used from classes using these apis to send information through http protocol.
**/
class http_response
{
public:
http_response(const http_response_builder& builder);
/**
* Copy constructor
* @param b The http_response object to copy attributes value from.
**/
http_response(const http_response& b):
content(b.content),
response_code(b.response_code),
autodelete(b.autodelete),
realm(b.realm),
opaque(b.opaque),
reload_nonce(b.reload_nonce),
fp(b.fp),
filename(b.filename),
headers(b.headers),
footers(b.footers),
cookies(b.cookies),
topics(b.topics),
keepalive_secs(b.keepalive_secs),
keepalive_msg(b.keepalive_msg),
send_topic(b.send_topic),
underlying_connection(b.underlying_connection),
ce(b.ce),
cycle_callback(b.cycle_callback),
get_raw_response(b.get_raw_response),
decorate_response(b.decorate_response),
enqueue_response(b.enqueue_response),
completed(b.completed),
ws(b.ws),
connection_id(b.connection_id)
{
}
http_response(): response_code(-1)
{
}
~http_response();
/**
* Method used to get the content from the response.
* @return the content in string form
**/
std::string get_content()
{
return this->content;
}
void get_content(std::string& result)
{
result = this->content;
}
/**
* Method used to get a specified header defined for the response
* @param key The header identification
* @return a string representing the value assumed by the header
**/
std::string get_header(const std::string& key)
{
return this->headers[key];
}
void get_header(const std::string& key, std::string& result)
{
result = this->headers[key];
}
/**
* Method used to get a specified footer defined for the response
* @param key The footer identification
* @return a string representing the value assumed by the footer
**/
std::string get_footer(const std::string& key)
{
return this->footers[key];
}
void get_footer(const std::string& key, std::string& result)
{
result = this->footers[key];
}
std::string get_cookie(const std::string& key)
{
return this->cookies[key];
}
void get_cookie(const std::string& key, std::string& result)
{
result = this->cookies[key];
}
/**
* Method used to get all headers passed with the request.
* @return a map<string,string> containing all headers.
**/
size_t get_headers(
std::map<std::string, std::string, http::header_comparator>& result
) const;
/**
* Method used to get all footers passed with the request.
* @return a map<string,string> containing all footers.
**/
size_t get_footers(
std::map<std::string, std::string, http::header_comparator>& result
) const;
size_t get_cookies(
std::map<std::string, std::string, http::header_comparator>& result
) const;
/**
* Method used to get the response code from the response
* @return The response code
**/
int get_response_code()
{
return this->response_code;
}
std::string get_realm() const
{
return this->realm;
}
void get_realm(std::string& result) const
{
result = this->realm;
}
std::string get_opaque() const
{
return this->opaque;
}
void get_opaque(std::string& result) const
{
result = this->opaque;
}
bool need_nonce_reload() const
{
return this->reload_nonce;
}
int get_switch_callback() const
{
return 0;
}
bool is_autodelete() const
{
return autodelete;
}
size_t get_topics(std::vector<std::string>& topics) const
{
typedef std::vector<std::string>::const_iterator topics_it;
for(topics_it it=this->topics.begin();it != this->topics.end();++it)
topics.push_back(*it);
return topics.size();
}
protected:
typedef details::binders::functor_two<MHD_Response**, webserver*, void> get_raw_response_t;
typedef details::binders::functor_one<MHD_Response*, void> decorate_response_t;
typedef details::binders::functor_two<MHD_Connection* ,MHD_Response*, int> enqueue_response_t;
std::string content;
int response_code;
bool autodelete;
std::string realm;
std::string opaque;
bool reload_nonce;
int fp;
std::string filename;
std::map<std::string, std::string, http::header_comparator> headers;
std::map<std::string, std::string, http::header_comparator> footers;
std::map<std::string, std::string, http::header_comparator> cookies;
std::vector<std::string> topics;
int keepalive_secs;
std::string keepalive_msg;
std::string send_topic;
struct MHD_Connection* underlying_connection;
details::cache_entry* ce;
cycle_callback_ptr cycle_callback;
const get_raw_response_t get_raw_response;
const decorate_response_t decorate_response;
const enqueue_response_t enqueue_response;
bool completed;
webserver* ws;
MHD_Connection* connection_id;
void get_raw_response_str(MHD_Response** res, webserver* ws = 0x0);
void get_raw_response_file(MHD_Response** res, webserver* ws = 0x0);
void get_raw_response_switch_r(MHD_Response** res, webserver* ws = 0x0);
void get_raw_response_lp_receive(MHD_Response** res,
webserver* ws = 0x0);
void get_raw_response_lp_send(MHD_Response** res, webserver* ws = 0x0);
void get_raw_response_cache(MHD_Response** res, webserver* ws = 0x0);
void get_raw_response_deferred(MHD_Response** res, webserver* ws = 0x0);
void decorate_response_str(MHD_Response* res);
void decorate_response_cache(MHD_Response* res);
void decorate_response_deferred(MHD_Response* res);
int enqueue_response_str(MHD_Connection* connection, MHD_Response* res);
int enqueue_response_basic(MHD_Connection* connection,
MHD_Response* res
);
int enqueue_response_digest(MHD_Connection* connection,
MHD_Response* res
);
friend class webserver;
friend struct details::http_response_ptr;
friend class http_response_builder;
friend void clone_response(const http_response& hr, http_response** dhr);
friend ssize_t details::cb(void* cls, uint64_t pos, char* buf, size_t max);
friend std::ostream &operator<< (std::ostream &os, const http_response &r);
private:
http_response& operator=(const http_response& b);
static ssize_t data_generator (void* cls, uint64_t pos, char* buf, size_t max);
};
std::ostream &operator<< (std::ostream &os, const http_response &r);
};
#endif
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