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/*
* ZeroTier One - Global Peer to Peer Ethernet
* Copyright (C) 2012-2013 ZeroTier Networks LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#ifndef _ZT_HTTP_HPP
#define _ZT_HTTP_HPP
#include <map>
#include <string>
#include <stdexcept>
#include "Thread.hpp"
#include "../ext/http-parser/http_parser.h"
namespace ZeroTier {
class Http
{
public:
/**
* HTTP request methods
*/
enum Method
{
HTTP_METHOD_GET,
HTTP_METHOD_HEAD
};
/**
* An empty headers map for convenience
*/
static const std::map<std::string,std::string> EMPTY_HEADERS;
/**
* HTTP request
*/
class Request : protected Thread
{
public:
/**
* Create and issue an HTTP request
*
* The supplied handler is called when the request is
* complete or if an error occurs. A code of zero indicates
* that the server could not be reached, and a description
* of the error will be in 'body'. If the handler returns
* false the Request object deletes itself. Otherwise the
* object must be deleted by other code.
*
* @param m Request method
* @param url Destination URL
* @param rh Request headers
* @param rb Request body or empty string for none (currently unused)
* @param handler Request handler function
* @param arg First argument to request handler
*/
Request(
Http::Method m,
const std::string &url,
const std::map<std::string,std::string> &rh,
const std::string &rb,
bool (*handler)(Request *,void *,const std::string &,int,const std::map<std::string,std::string> &,const std::string &),
void *arg);
/**
* Destruction cancels any in-progress request
*/
virtual ~Request();
protected:
virtual void main()
throw();
private:
// HTTP parser handlers
static int _http_on_message_begin(http_parser *parser);
static int _http_on_url(http_parser *parser,const char *data,size_t length);
static int _http_on_status_complete(http_parser *parser);
static int _http_on_header_field(http_parser *parser,const char *data,size_t length);
static int _http_on_header_value(http_parser *parser,const char *data,size_t length);
static int _http_on_headers_complete(http_parser *parser);
static int _http_on_body(http_parser *parser,const char *data,size_t length);
static int _http_on_message_complete(http_parser *parser);
http_parser _parser;
std::string _url;
std::map<std::string,std::string> _requestHeaders;
std::map<std::string,std::string> _responseHeaders;
std::string _currentHeaderField;
std::string _responseBody;
bool (*_handler)(Request *,void *,const std::string &,int,const std::map<std::string,std::string> &,const std::string &);
void *_arg;
Http::Method _method;
int _responseStatusCode;
bool _messageComplete;
volatile int _fd;
};
};
} // namespace ZeroTier
#endif
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