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http_response.cpp
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253 lines (226 loc) · 8.54 KB
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/*
This file is part of libhttpserver
Copyright (C) 2011 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
*/
#include <cstdio>
#include "http_utils.hpp"
#include "webserver.hpp"
#include "http_response.hpp"
#include <iostream>
#include <sstream>
using namespace std;
namespace httpserver
{
void unlock_on_close::do_action()
{
details::unlock_cache_entry(elem);
}
cache_response::~cache_response()
{
if(ce != 0x0 && locked_element)
details::unlock_cache_entry(ce);
}
const std::vector<std::pair<std::string, std::string> > http_response::get_headers()
{
std::vector<std::pair<std::string, std::string> > to_ret;
std::map<std::string, std::string, header_comparator>::const_iterator it;
for(it = headers.begin(); it != headers.end(); ++it)
to_ret.push_back(*it);
return to_ret;
}
size_t http_response::get_headers(std::vector<std::pair<std::string, std::string> >& result)
{
std::map<std::string, std::string, header_comparator>::const_iterator it;
for(it = headers.begin(); it != headers.end(); ++it)
result.push_back(*it);
return result.size();
}
size_t http_response::get_headers(std::map<std::string, std::string, header_comparator>& result)
{
result = this->headers;
return result.size();
}
const std::vector<std::pair<std::string, std::string> > http_response::get_footers()
{
std::vector<std::pair<std::string, std::string> > to_ret;
std::map<std::string, std::string, header_comparator>::const_iterator it;
for(it = footers.begin(); it != footers.end(); ++it)
to_ret.push_back(*it);
return to_ret;
}
size_t http_response::get_footers(std::vector<std::pair<std::string, std::string> >& result)
{
std::map<std::string, std::string, arg_comparator>::const_iterator it;
for(it = footers.begin(); it != footers.end(); ++it)
result.push_back(*it);
return result.size();
}
size_t http_response::get_footers(std::map<std::string, std::string, header_comparator>& result)
{
result = this->footers;
return result.size();
}
const std::vector<std::pair<std::string, std::string> > http_response::get_cookies()
{
std::vector<std::pair<std::string, std::string> > to_ret;
std::map<std::string, std::string, header_comparator>::const_iterator it;
for(it = cookies.begin(); it != cookies.end(); ++it)
to_ret.push_back(*it);
return to_ret;
}
size_t http_response::get_cookies(std::vector<std::pair<std::string, std::string> >& result)
{
std::map<std::string, std::string, header_comparator>::const_iterator it;
for(it = cookies.begin(); it != cookies.end(); ++it)
result.push_back(*it);
return result.size();
}
size_t http_response::get_cookies(std::map<std::string, std::string, header_comparator>& result)
{
result = this->cookies;
return result.size();
}
//RESPONSE
shoutCAST_response::shoutCAST_response
(
const std::string& content,
int response_code,
const std::string& content_type,
bool autodelete
):
http_response(http_response::SHOUTCAST_CONTENT, content, response_code | http_utils::shoutcast_response, content_type, autodelete)
{
}
void http_response::get_raw_response(MHD_Response** response, webserver* ws)
{
size_t size = &(*content.end()) - &(*content.begin());
*response = MHD_create_response_from_buffer(size, (void*) content.c_str(), MHD_RESPMEM_PERSISTENT);
}
void http_response::decorate_response(MHD_Response* response)
{
map<string, string, header_comparator>::iterator it;
for (it=headers.begin() ; it != headers.end(); ++it)
MHD_add_response_header(response, (*it).first.c_str(), (*it).second.c_str());
for (it=footers.begin() ; it != footers.end(); ++it)
MHD_add_response_footer(response, (*it).first.c_str(), (*it).second.c_str());
for (it=cookies.begin(); it != cookies.end(); ++it)
MHD_add_response_header(response, "Set-Cookie", ((*it).first + "=" + (*it).second).c_str());
}
void cache_response::decorate_response(MHD_Response* response)
{
}
int http_response::enqueue_response(MHD_Connection* connection, MHD_Response* response)
{
return MHD_queue_response(connection, response_code, response);
}
int http_basic_auth_fail_response::enqueue_response(MHD_Connection* connection, MHD_Response* response)
{
return MHD_queue_basic_auth_fail_response(connection, realm.c_str(), response);
}
int http_digest_auth_fail_response::enqueue_response(MHD_Connection* connection, MHD_Response* response)
{
return MHD_queue_auth_fail_response(connection, realm.c_str(), opaque.c_str(), response, reload_nonce ? MHD_YES : MHD_NO);
}
void http_file_response::get_raw_response(MHD_Response** response, webserver* ws)
{
char* page = NULL;
size_t size = http::load_file(filename.c_str(), &page);
if(size)
*response = MHD_create_response_from_buffer(size, page, MHD_RESPMEM_MUST_FREE);
else
*response = MHD_create_response_from_buffer(size, (void*) "", MHD_RESPMEM_PERSISTENT);
}
void cache_response::get_raw_response(MHD_Response** response, webserver* ws)
{
this->locked_element = true;
bool valid;
http_response* r;
if(ce == 0x0)
r = ws->get_from_cache(content, &valid, &ce, true, false);
else
r = details::get_response(ce);
r->get_raw_response(response, ws);
r->decorate_response(*response); //It is done here to avoid to search two times for the same element
//TODO: Check if element is not in cache and throw exception
}
void long_polling_receive_response::get_raw_response(MHD_Response** response, webserver* ws)
{
#ifdef USE_COMET
this->ws = ws;
this->connection_id = MHD_get_connection_info(this->underlying_connection, MHD_CONNECTION_INFO_FD)->socket_fd;
*response = MHD_create_response_from_callback(MHD_SIZE_UNKNOWN, 80,
&long_polling_receive_response::data_generator, (void*) this, NULL);
ws->register_to_topics(topics, connection_id, keepalive_secs, keepalive_msg);
#else //USE_COMET
http_response::get_raw_response(response, ws);
#endif //USE_COMET
}
ssize_t long_polling_receive_response::data_generator (void* cls, uint64_t pos, char* buf, size_t max)
{
#ifdef USE_COMET
long_polling_receive_response* _this = static_cast<long_polling_receive_response*>(cls);
if(_this->ws->pop_signaled(_this->connection_id))
{
string message;
int size = _this->ws->read_message(_this->connection_id, message);
memcpy(buf, message.c_str(), size);
return size;
}
else
return 0;
#else //USE_COMET
return 0;
#endif //USE_COMET
}
void long_polling_send_response::get_raw_response(MHD_Response** response, webserver* ws)
{
http_response::get_raw_response(response, ws);
#ifdef USE_COMET
ws->send_message_to_topic(send_topic, content);
#endif //USE_COMET
}
void clone_response(const http_response& hr, http_response** dhrs)
{
switch(hr.response_type)
{
case(http_response::STRING_CONTENT):
*dhrs = new http_string_response(hr);
return;
case(http_response::FILE_CONTENT):
*dhrs = new http_file_response(hr);
return;
case(http_response::SHOUTCAST_CONTENT):
*dhrs = new shoutCAST_response(hr);
return;
case(http_response::DIGEST_AUTH_FAIL):
*dhrs = new http_digest_auth_fail_response(hr);
return;
case(http_response::BASIC_AUTH_FAIL):
*dhrs = new http_basic_auth_fail_response(hr);
return;
case(http_response::SWITCH_PROTOCOL):
*dhrs = new switch_protocol_response(hr);
return;
case(http_response::LONG_POLLING_RECEIVE):
*dhrs = new long_polling_receive_response(hr);
return;
case(http_response::LONG_POLLING_SEND):
*dhrs = new long_polling_send_response(hr);
return;
case(http_response::CACHED_CONTENT):
*dhrs = new cache_response(hr);
return;
}
}
};