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// file : web/apache/request -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
// license : MIT; see accompanying LICENSE file
#ifndef WEB_APACHE_REQUEST
#define WEB_APACHE_REQUEST
#include <apr_strings.h>
#include <httpd/httpd.h>
#include <httpd/http_core.h>
#include <httpd/util_script.h>
#include <ios>
#include <chrono>
#include <memory> // unique_ptr
#include <string>
#include <cassert>
#include <istream>
#include <ostream>
#include <streambuf>
#include <stdexcept>
#include <exception>
#include <algorithm> // move
#include <web/module>
#include <web/apache/stream>
namespace web
{
namespace apache
{
class request: public web::request,
public web::response,
public write_state
{
friend class service;
request (request_rec* rec) noexcept: rec_ (rec) {rec_->status = HTTP_OK;}
// Flush of buffered content.
//
int
flush ();
// Get request body data stream.
//
virtual std::istream&
content ()
{
if (!in_)
{
std::unique_ptr<std::streambuf> in_buf (
new istreambuf (rec_, *this));
in_.reset (new std::istream (in_buf.get ()));
in_buf_ = std::move (in_buf);
in_->exceptions (std::ios::failbit | std::ios::badbit);
// Save form data now otherwise will not be available to do later
// when data read from stream.
//
form_data ();
}
return *in_;
}
// Get request parameters.
//
virtual const name_values&
parameters ()
{
if (!parameters_)
{
parameters_.reset (new name_values ());
try
{
parse_parameters (rec_->args);
parse_parameters (form_data ()->c_str ());
}
catch (const std::invalid_argument& )
{
throw invalid_request ();
}
}
return *parameters_;
}
// Get request cookies.
//
virtual const name_values&
cookies ();
// Get response status code.
//
status_code status () const noexcept {return rec_->status;}
// Set response status code.
//
virtual void
status (status_code status)
{
if (status != rec_->status)
{
// Setting status code in exception handler is a common usecase
// where no sense to throw but still need to signal apache a
// proper status code.
//
if (get_write_state () && !std::current_exception ())
{
throw sequence_error ("::web::apache::request::status");
}
rec_->status = status;
buffer_ = true;
out_.reset ();
out_buf_.reset ();
ap_set_content_type (rec_, nullptr);
}
}
// Set response status code, content type and get body stream.
//
virtual std::ostream&
content (status_code status,
const std::string& type,
bool buffer = true);
// Add response cookie.
//
virtual void
cookie (const char* name,
const char* value,
const std::chrono::seconds* max_age = 0,
const char* path = 0,
const char* domain = 0,
bool secure = false);
private:
using string_ptr = std::unique_ptr<std::string>;
// Get application/x-www-form-urlencoded form data.
//
const string_ptr&
form_data ();
void
parse_parameters (const char* args);
static void
mime_url_encode (const char* v, std::ostream& o);
static std::string
mime_url_decode (const char* b, const char* e, bool trim = false);
bool
get_write_state () const noexcept {return write_state_;}
virtual void
set_write_state ()
{
if (!write_state_)
{
// Preparing to write a response read and discard request
// body if any.
//
int r = ap_discard_request_body (rec_);
if (r != OK)
{
throw invalid_request (r);
}
write_state_ = true;
}
}
private:
request_rec* rec_;
bool buffer_ {true};
bool write_state_ {false};
std::unique_ptr<std::streambuf> out_buf_;
std::unique_ptr<std::ostream> out_;
std::unique_ptr<std::streambuf> in_buf_;
std::unique_ptr<std::istream> in_;
std::unique_ptr<name_values> parameters_;
std::unique_ptr<name_values> cookies_;
string_ptr form_data_;
};
}
}
#include <web/apache/request.ixx>
#endif // WEB_APACHE_REQUEST
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