SafeHttpServer.cpp

/*
	This file is part of cpp-ethereum.

	cpp-ethereum 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.

	cpp-ethereum 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 cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
/** @file SafeHttpServer.cpp
 * @authors:
 *   Marek
 * @date 2015
 */

#include <microhttpd.h>
#include <sstream>
#include "SafeHttpServer.h"
using namespace std;
using namespace dev;

/// structure copied from libjson-rpc-cpp httpserver version 0.6.0
struct mhd_coninfo
{
	struct MHD_PostProcessor *postprocessor;
	MHD_Connection* connection;
	stringstream request;
	jsonrpc::HttpServer* server;
	int code;
};

bool SafeHttpServer::SendResponse(string const& _response, void* _addInfo)
{
	struct mhd_coninfo* client_connection = static_cast<struct mhd_coninfo*>(_addInfo);
	struct MHD_Response *result = MHD_create_response_from_buffer(
		_response.size(),
		static_cast<void *>(const_cast<char *>(_response.c_str())),
		MHD_RESPMEM_MUST_COPY
	);

	MHD_add_response_header(result, "Content-Type", "application/json");
	MHD_add_response_header(result, "Access-Control-Allow-Origin", m_allowedOrigin.c_str());

	int ret = MHD_queue_response(client_connection->connection, client_connection->code, result);
	MHD_destroy_response(result);
	return ret == MHD_YES;
}

bool SafeHttpServer::SendOptionsResponse(void* _addInfo)
{
	struct mhd_coninfo* client_connection = static_cast<struct mhd_coninfo*>(_addInfo);
	struct MHD_Response *result = MHD_create_response_from_buffer(0, nullptr, MHD_RESPMEM_MUST_COPY);

	MHD_add_response_header(result, "Allow", "POST, OPTIONS");
	MHD_add_response_header(result, "Access-Control-Allow-Origin", m_allowedOrigin.c_str());
	MHD_add_response_header(result, "Access-Control-Allow-Headers", "origin, content-type, accept");
	MHD_add_response_header(result, "DAV", "1");

	int ret = MHD_queue_response(client_connection->connection, client_connection->code, result);
	MHD_destroy_response(result);
	return ret == MHD_YES;
}