/*
open source routing machine
Copyright (C) Dennis Luxen, 2010
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU AFFERO General Public License as published by
the Free Software Foundation; either version 3 of the License, or
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 Affero General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
or see http://www.gnu.org/licenses/agpl.txt.
*/
#ifndef HTTP_SERVER3_REPLY_HPP
#define HTTP_SERVER3_REPLY_HPP
#include <string>
#include <vector>
#include <boost/asio.hpp>
#include <boost/lexical_cast.hpp>
#include "header.h"
namespace http {
/// A reply to be sent to a client.
struct reply
{
/// The status of the reply.
enum status_type
{
ok = 200,
bad_request = 400,
internal_server_error = 500
} status;
std::vector<header> headers;
/// The content to be sent in the reply.
std::string content;
/// Convert the reply into a vector of buffers. The buffers do not own the
/// underlying memory blocks, therefore the reply object must remain valid and
/// not be changed until the write operation has completed.
std::vector<boost::asio::const_buffer> to_buffers();
/// Get a stock reply.
static reply stock_reply(status_type status);
};
namespace status_strings {
const std::string ok =
"HTTP/1.0 200 OK\r\n";
const std::string bad_request =
"HTTP/1.0 400 Bad Request\r\n";
const std::string internal_server_error =
"HTTP/1.0 500 Internal Server Error\r\n";
boost::asio::const_buffer to_buffer(reply::status_type status)
{
switch (status)
{
case reply::ok:
return boost::asio::buffer(ok);
case reply::bad_request:
return boost::asio::buffer(bad_request);
case reply::internal_server_error:
return boost::asio::buffer(internal_server_error);
default:
return boost::asio::buffer(bad_request);
}
}
} // namespace status_strings
namespace misc_strings {
const char name_value_separator[] = { ':', ' ' };
const char crlf[] = { '\r', '\n' };
} // namespace misc_strings
std::vector<boost::asio::const_buffer> reply::to_buffers()
{
std::vector<boost::asio::const_buffer> buffers;
buffers.push_back(status_strings::to_buffer(status));
for (std::size_t i = 0; i < headers.size(); ++i)
{
header& h = headers[i];
buffers.push_back(boost::asio::buffer(h.name));
buffers.push_back(boost::asio::buffer(misc_strings::name_value_separator));
buffers.push_back(boost::asio::buffer(h.value));
buffers.push_back(boost::asio::buffer(misc_strings::crlf));
}
buffers.push_back(boost::asio::buffer(misc_strings::crlf));
buffers.push_back(boost::asio::buffer(content));
return buffers;
}
namespace stock_replies {
const char ok[] = "";
const char bad_request[] =
"<html>"
"<head><title>Bad Request</title></head>"
"<body><h1>400 Bad Request</h1></body>"
"</html>";
const char internal_server_error[] =
"<html>"
"<head><title>Internal Server Error</title></head>"
"<body><h1>500 Internal Server Error</h1></body>"
"</html>";
std::string to_string(reply::status_type status)
{
switch (status)
{
case reply::ok:
return ok;
case reply::bad_request:
return bad_request;
case reply::internal_server_error:
return internal_server_error;
default:
return internal_server_error;
}
}
} // namespace stock_replies
reply reply::stock_reply(reply::status_type status)
{
reply rep;
rep.status = status;
rep.content = stock_replies::to_string(status);
rep.headers.resize(2);
rep.headers[0].name = "Content-Length";
rep.headers[0].value = boost::lexical_cast<std::string>(rep.content.size());
rep.headers[1].name = "Content-Type";
rep.headers[1].value = "text/html";
return rep;
}
} // namespace http
#endif // HTTP_SERVER3_REPLY_HPP