///////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2008-2010 Artyom Beilis (Tonkikh) <artyomtnk@yahoo.com>
//
// This program 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 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
///////////////////////////////////////////////////////////////////////////////
#define CPPCMS_SOURCE
#include "cgi_api.h"
#include <cppcms/service.h>
#include <cppcms/http_context.h>
#include <cppcms/http_request.h>
#include <cppcms/http_response.h>
#include <cppcms/application.h>
#include <cppcms/applications_pool.h>
#include <cppcms/thread_pool.h>
#include <cppcms/views_pool.h>
#include <cppcms/cache_interface.h>
#include <cppcms/session_interface.h>
#include <cppcms/cppcms_error.h>
#include <booster/log.h>
#include <booster/backtrace.h>
#include "cached_settings.h"
#include <cppcms/config.h>
#ifdef CPPCMS_USE_EXTERNAL_BOOST
# include <boost/bind.hpp>
#else // Internal Boost
# include <cppcms_boost/bind.hpp>
namespace boost = cppcms_boost;
#endif
namespace cppcms {
namespace http {
struct context::_data {
std::locale locale;
std::string skin;
http::request request;
std::auto_ptr<http::response> response;
std::auto_ptr<cache_interface> cache;
std::auto_ptr<session_interface> session;
_data(context &cntx) :
locale(cntx.connection().service().locale()),
request(cntx.connection())
{
}
};
context::context(booster::shared_ptr<impl::cgi::connection> conn) :
conn_(conn)
{
d.reset(new _data(*this));
d->response.reset(new http::response(*this));
skin(service().views_pool().default_skin());
d->cache.reset(new cache_interface(*this));
d->session.reset(new session_interface(*this));
}
std::string context::skin()
{
return d->skin;
}
cache_interface &context::cache()
{
return *d->cache;
}
void context::skin(std::string const &skin)
{
d->skin=skin;
}
void context::run()
{
conn_->async_prepare_request(this,boost::bind(&context::on_request_ready,self(),_1));
}
void context::on_request_ready(bool error)
{
if(error) return;
char const *host = conn_->cgetenv("HTTP_HOST");
char const *path_info = conn_->cgetenv("PATH_INFO");
char const *script_name = conn_->cgetenv("SCRIPT_NAME");
std::string matched;
booster::intrusive_ptr<application> app = service().applications_pool().get(host,script_name,path_info,matched);
if(!app) {
response().io_mode(http::response::asynchronous);
response().make_error_response(http::response::not_found);
async_complete_response();
return;
}
app->assign_context(self());
if(app->is_asynchronous()) {
response().io_mode(http::response::asynchronous);
// Don't post, as context may be reassigned
dispatch(app,matched,false);
}
else {
app->service().thread_pool().post(boost::bind(&context::dispatch,app,matched,true));
}
}
void context::complete_response()
{
response().finalize();
conn_->complete_response();
if(conn_->is_reuseable()) {
booster::shared_ptr<context> cont(new context(conn_));
service().post(boost::bind(&context::run,cont));
}
conn_.reset();
}
// static
void context::dispatch(booster::intrusive_ptr<application> app,std::string url,bool syncronous)
{
try {
if(syncronous)
app->context().session().load();
app->main(url);
}
catch(request_forgery_error const &e) {
if(app->get_context() && !app->response().some_output_was_written()) {
app->response().make_error_response(http::response::forbidden);
}
}
catch(std::exception const &e){
BOOSTER_ERROR("cppcms") << "Caught exception ["<<e.what()<<"]\n" << booster::trace(e) ;
if(app->get_context()) {
if(!app->response().some_output_was_written()) {
if(app->service().cached_settings().security.display_error_message) {
std::ostringstream ss;
ss << e.what() << '\n';
ss << booster::trace(e);
app->response().make_error_response(http::response::internal_server_error,ss.str());
}
else
app->response().make_error_response(http::response::internal_server_error);
}
}
}
if(app->get_context()) {
if(syncronous) {
app->context().complete_response();
}
else {
app->context().async_complete_response();
}
}
}
namespace {
void wrapper(context::handler const &h,bool r)
{
h(r ? context::operation_aborted : context::operation_completed);
}
}
void context::async_flush_output(context::handler const &h)
{
if(response().io_mode() != http::response::asynchronous) {
throw cppcms_error("Can't use asynchronouse operations when I/O mode is synchronous");
}
conn_->async_write_response(
response(),
false,
boost::bind(wrapper,h,_1));
}
void context::async_complete_response()
{
response().finalize();
if(response().io_mode() == http::response::asynchronous || response().io_mode() == http::response::asynchronous_raw) {
conn_->async_write_response(
response(),
true,
boost::bind(&context::try_restart,self(),_1));
return;
}
conn_->async_complete_response(boost::bind(&context::try_restart,self(),_1));
}
void context::try_restart(bool e)
{
if(e) return;
if(conn_->is_reuseable()) {
booster::shared_ptr<context> cont(new context(conn_));
cont->run();
}
conn_.reset();
}
booster::shared_ptr<context> context::self()
{
return shared_from_this();
}
context::~context()
{
}
void context::async_on_peer_reset(booster::callback<void()> const &h)
{
conn_->aync_wait_for_close_by_peer(h);
}
impl::cgi::connection &context::connection()
{
return *conn_;
}
cppcms::service &context::service()
{
return conn_->service();
}
http::request &context::request()
{
return d->request;
}
http::response &context::response()
{
return *d->response;
}
json::value const &context::settings()
{
return conn_->service().settings();
}
std::locale context::locale()
{
return d->locale;
}
void context::locale(std::locale const &new_locale)
{
d->locale=new_locale;
if(response().some_output_was_written())
response().out().imbue(d->locale);
}
void context::locale(std::string const &name)
{
locale(service().locale(name));
}
session_interface &context::session()
{
return *d->session;
}
} // http
} // cppcms
