habboy/hw_iface/code/http_session.cpp

277 wiersze
8.6 KiB
C++

#include "http_session.h"
#include "websocket_session.h"
#include <iostream>
//------------------------------------------------------------------------------
// Return a reasonable mime type based on the extension of a file.
/*
boost::beast::string_view
mime_type(boost::beast::string_view path)
{
using boost::beast::iequals;
auto const ext = [&path]
{
auto const pos = path.rfind(".");
if(pos == boost::beast::string_view::npos)
return boost::beast::string_view{};
return path.substr(pos);
}();
if(iequals(ext, ".htm")) return "text/html";
if(iequals(ext, ".html")) return "text/html";
if(iequals(ext, ".php")) return "text/html";
if(iequals(ext, ".css")) return "text/css";
if(iequals(ext, ".txt")) return "text/plain";
if(iequals(ext, ".js")) return "application/javascript";
if(iequals(ext, ".json")) return "application/json";
if(iequals(ext, ".xml")) return "application/xml";
if(iequals(ext, ".swf")) return "application/x-shockwave-flash";
if(iequals(ext, ".flv")) return "video/x-flv";
if(iequals(ext, ".png")) return "image/png";
if(iequals(ext, ".jpe")) return "image/jpeg";
if(iequals(ext, ".jpeg")) return "image/jpeg";
if(iequals(ext, ".jpg")) return "image/jpeg";
if(iequals(ext, ".gif")) return "image/gif";
if(iequals(ext, ".bmp")) return "image/bmp";
if(iequals(ext, ".ico")) return "image/vnd.microsoft.icon";
if(iequals(ext, ".tiff")) return "image/tiff";
if(iequals(ext, ".tif")) return "image/tiff";
if(iequals(ext, ".svg")) return "image/svg+xml";
if(iequals(ext, ".svgz")) return "image/svg+xml";
return "application/text";
}
*/
// Append an HTTP rel-path to a local filesystem path.
// The returned path is normalized for the platform.
/*
std::string
path_cat(
boost::beast::string_view base,
boost::beast::string_view path)
{
if(base.empty())
return path.to_string();
std::string result = base.to_string();
#if BOOST_MSVC
char constexpr path_separator = '\\';
if(result.back() == path_separator)
result.resize(result.size() - 1);
result.append(path.data(), path.size());
for(auto& c : result)
if(c == '/')
c = path_separator;
#else
char constexpr path_separator = '/';
if(result.back() == path_separator)
result.resize(result.size() - 1);
result.append(path.data(), path.size());
#endif
return result;
}
*/
// This function produces an HTTP response for the given
// request. The type of the response object depends on the
// contents of the request, so the interface requires the
// caller to pass a generic lambda for receiving the response.
/*
template<
class Body, class Allocator,
class Send>
void
handle_request(
boost::beast::string_view doc_root,
http::request<Body, http::basic_fields<Allocator>>&& req,
Send&& send)
{
// Returns a bad request response
auto const bad_request =
[&req](boost::beast::string_view why)
{
http::response<http::string_body> res{http::status::bad_request, req.version()};
res.set(http::field::server, BOOST_BEAST_VERSION_STRING);
res.set(http::field::content_type, "text/html");
res.keep_alive(req.keep_alive());
res.body() = why.to_string();
res.prepare_payload();
return res;
};
// Returns a not found response
auto const not_found =
[&req](boost::beast::string_view target)
{
http::response<http::string_body> res{http::status::not_found, req.version()};
res.set(http::field::server, BOOST_BEAST_VERSION_STRING);
res.set(http::field::content_type, "text/html");
res.keep_alive(req.keep_alive());
res.body() = "The resource '" + target.to_string() + "' was not found.";
res.prepare_payload();
return res;
};
// Returns a server error response
auto const server_error =
[&req](boost::beast::string_view what)
{
http::response<http::string_body> res{http::status::internal_server_error, req.version()};
res.set(http::field::server, BOOST_BEAST_VERSION_STRING);
res.set(http::field::content_type, "text/html");
res.keep_alive(req.keep_alive());
res.body() = "An error occurred: '" + what.to_string() + "'";
res.prepare_payload();
return res;
};
// Make sure we can handle the method
if( req.method() != http::verb::get &&
req.method() != http::verb::head)
return send(bad_request("Unknown HTTP-method"));
// Request path must be absolute and not contain "..".
if( req.target().empty() ||
req.target()[0] != '/' ||
req.target().find("..") != boost::beast::string_view::npos)
return send(bad_request("Illegal request-target"));
// Build the path to the requested file
std::string path = path_cat(doc_root, req.target());
if(req.target().back() == '/')
path.append("index.html");
// Attempt to open the file
boost::beast::error_code ec;
http::file_body::value_type body;
body.open(path.c_str(), boost::beast::file_mode::scan, ec);
// Handle the case where the file doesn't exist
if(ec == boost::system::errc::no_such_file_or_directory)
return send(not_found(req.target()));
// Handle an unknown error
if(ec)
return send(server_error(ec.message()));
// Cache the size since we need it after the move
auto const size = body.size();
// Respond to HEAD request
if(req.method() == http::verb::head)
{
http::response<http::empty_body> res{http::status::ok, req.version()};
res.set(http::field::server, BOOST_BEAST_VERSION_STRING);
res.set(http::field::content_type, mime_type(path));
res.content_length(size);
res.keep_alive(req.keep_alive());
return send(std::move(res));
}
// Respond to GET request
http::response<http::file_body> res{
std::piecewise_construct,
std::make_tuple(std::move(body)),
std::make_tuple(http::status::ok, req.version())};
res.set(http::field::server, BOOST_BEAST_VERSION_STRING);
res.set(http::field::content_type, mime_type(path));
res.content_length(size);
res.keep_alive(req.keep_alive());
return send(std::move(res));
}
*/
//------------------------------------------------------------------------------
namespace habboy_hw_iface
{
http_session::http_session(
tcp::socket socket,
std::shared_ptr<habboy_hw_iface::WebsocketServer> p_ws_server)
: socket_(std::move(socket)),
p_ws_server_(p_ws_server)
{
}
void http_session::run()
{
boost::beast::http::async_read(socket_, buffer_, req_,
[self = shared_from_this()]
(error_code ec, std::size_t bytes)
{
self->on_read(ec, bytes);
});
}
void http_session::fail(error_code ec, char const* what)
{
if(ec == net::error::operation_aborted)
return;
std::cerr << what << ": " << ec.message() << "\n";
}
void http_session::on_read(error_code ec, std::size_t)
{
if(ec == boost::beast::http::error::end_of_stream)
{
socket_.shutdown(tcp::socket::shutdown_send, ec);
return;
}
if(ec)
return fail(ec, "read");
if(boost::beast::websocket::is_upgrade(req_))
{
std::make_shared<websocket_session>(
std::move(socket_), p_ws_server_
)->run(std::move(req_));
return;
}
// Send the response
/*
handle_request(state_->doc_root(), std::move(req_),
[this](auto&& response)
{
// The lifetime of the message has to extend
// for the duration of the async operation so
// we use a shared_ptr to manage it.
using response_type = typename std::decay<decltype(response)>::type;
auto sp = std::make_shared<response_type>(std::forward<decltype(response)>(response));
// Write the response
auto self = shared_from_this();
http::async_write(this->socket_, *sp,
[self, sp](
error_code ec, std::size_t bytes)
{
self->on_write(ec, bytes, sp->need_eof());
});
});
*/
}
void http_session::on_write(error_code ec, std::size_t, bool close)
{
if(ec)
return fail(ec, "write");
if(close)
{
socket_.shutdown(tcp::socket::shutdown_send, ec);
return;
}
// Clear contents of the request message,
// otherwise the read behavior is undefined.
req_ = {};
boost::beast::http::async_read(socket_, buffer_, req_,
[self = shared_from_this()]
(error_code ec, std::size_t bytes)
{
self->on_read(ec, bytes);
});
}
} //ns