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/**
* @file session.c
*
* @brief Implementation of session_t.
*
*/
/*
* Copyright (C) 2007 Martin Willi
* Hochschule fuer Technik Rapperswil
*
* This program 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 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*/
#define _GNU_SOURCE
#include "session.h"
#include <string.h>
#include <fcgiapp.h>
#include <stdio.h>
#include <utils/linked_list.h>
#include <utils/randomizer.h>
typedef struct private_session_t private_session_t;
/**
* private data of the task manager
*/
struct private_session_t {
/**
* public functions
*/
session_t public;
/**
* session ID
*/
char *sid;
/**
* list of controller instances controller_t
*/
linked_list_t *controllers;
/**
* user defined session context
*/
context_t *context;
};
/**
* Implementation of session_t.load_controller.
*/
static void add_controller(private_session_t *this, controller_t *controller)
{
this->controllers->insert_last(this->controllers, controller);
}
/**
* Create a session ID and a cookie
*/
static void create_sid(private_session_t *this, response_t *response)
{
char buf[16];
chunk_t chunk = chunk_from_buf(buf);
randomizer_t *randomizer = randomizer_create();
randomizer->get_pseudo_random_bytes(randomizer, sizeof(buf), buf);
asprintf(&this->sid, "%#B", &chunk);
response->add_cookie(response, "SID", this->sid);
randomizer->destroy(randomizer);
}
/**
* Implementation of session_t.process.
*/
static void process(private_session_t *this,
request_t *request, response_t *response)
{
char *pos, *path, *controller, *action;
iterator_t *iterator;
bool handled = FALSE;
controller_t *current;
if (this->sid == NULL)
{
create_sid(this, response);
}
path = request->get_path(request);
if (*path == '/') path++;
pos = strchr(path, '/');
if (pos == NULL)
{
controller = strdup(path);
action = strdup("");
}
else
{
controller = strndup(path, pos - path);
path = pos + 1;
pos = strchr(path, '/');
if (pos == NULL)
{
action = strdup(path);
}
else
{
action = strndup(path, pos - path);
}
}
iterator = this->controllers->create_iterator(this->controllers, TRUE);
while (iterator->iterate(iterator, (void**)¤t))
{
if (streq(current->get_name(current), controller))
{
current->handle(current, request, response, action, NULL, NULL, NULL, NULL);
handled = TRUE;
break;
}
}
iterator->destroy(iterator);
free(controller);
free(action);
if (!handled)
{
if (this->controllers->get_first(this->controllers,
(void**)¤t) == SUCCESS)
{
response->redirect(response, current->get_name(current));
}
else
{
response->printf(response, "No controllers loaded!\n");
}
}
}
/**
* Implementation of session_t.get_sid.
*/
static char* get_sid(private_session_t *this)
{
return this->sid;
}
/**
* Implementation of session_t.destroy
*/
static void destroy(private_session_t *this)
{
this->controllers->destroy_offset(this->controllers, offsetof(controller_t, destroy));
if (this->context) this->context->destroy(this->context);
free(this->sid);
free(this);
}
/*
* see header file
*/
session_t *session_create(context_t *context)
{
private_session_t *this = malloc_thing(private_session_t);
this->public.add_controller = (void(*)(session_t*, controller_t*))add_controller;
this->public.process = (void(*)(session_t*, request_t*,response_t*))process;
this->public.get_sid = (char*(*)(session_t*))get_sid;
this->public.destroy = (void(*)(session_t*))destroy;
this->sid = NULL;
this->controllers = linked_list_create();
this->context = context;
return &this->public;
}
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