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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MOD_SESSION_H
#define MOD_SESSION_H
/* Create a set of SESSION_DECLARE(type), SESSION_DECLARE_NONSTD(type) and
* SESSION_DECLARE_DATA with appropriate export and import tags for the platform
*/
#if !defined(WIN32)
#define SESSION_DECLARE(type) type
#define SESSION_DECLARE_NONSTD(type) type
#define SESSION_DECLARE_DATA
#elif defined(SESSION_DECLARE_STATIC)
#define SESSION_DECLARE(type) type __stdcall
#define SESSION_DECLARE_NONSTD(type) type
#define SESSION_DECLARE_DATA
#elif defined(SESSION_DECLARE_EXPORT)
#define SESSION_DECLARE(type) __declspec(dllexport) type __stdcall
#define SESSION_DECLARE_NONSTD(type) __declspec(dllexport) type
#define SESSION_DECLARE_DATA __declspec(dllexport)
#else
#define SESSION_DECLARE(type) __declspec(dllimport) type __stdcall
#define SESSION_DECLARE_NONSTD(type) __declspec(dllimport) type
#define SESSION_DECLARE_DATA __declspec(dllimport)
#endif
/**
* @file mod_session.h
* @brief Session Module for Apache
*
* @defgroup MOD_SESSION mod_session
* @ingroup APACHE_MODS
* @{
*/
#include "apr_hooks.h"
#include "apr_optional.h"
#include "apr_tables.h"
#include "apr_uuid.h"
#include "apr_pools.h"
#include "apr_time.h"
#include "httpd.h"
#include "http_config.h"
#include "ap_config.h"
#define MOD_SESSION_NOTES_KEY "mod_session_key"
/**
* Define the name of a username stored in the session, so that modules interested
* in the username can find it in a standard place.
*/
#define MOD_SESSION_USER "user"
/**
* Define the name of a password stored in the session, so that modules interested
* in the password can find it in a standard place.
*/
#define MOD_SESSION_PW "pw"
/**
* A session structure.
*
* At the core of the session is a set of name value pairs making up the
* session.
*
* The session might be uniquely identified by an anonymous uuid, or
* a remote_user value, or both.
*/
typedef struct {
apr_pool_t *pool; /* pool to be used for this session */
apr_uuid_t *uuid; /* anonymous uuid of this particular session */
const char *remote_user; /* user who owns this particular session */
apr_table_t *entries; /* key value pairs */
const char *encoded; /* the encoded version of the key value pairs */
apr_time_t expiry; /* if > 0, the time of expiry of this session */
long maxage; /* if > 0, the maxage of the session, from
* which expiry is calculated */
int dirty; /* dirty flag */
int cached; /* true if this session was loaded from a
* cache of some kind */
int written; /* true if this session has already been
* written */
} session_rec;
/**
* Structure to carry the per-dir session config.
*/
typedef struct {
int enabled; /* whether the session has been enabled for
* this directory */
int enabled_set;
long maxage; /* seconds until session expiry */
int maxage_set;
const char *header; /* header to inject session */
int header_set;
int env; /* whether the session has been enabled for
* this directory */
int env_set;
apr_array_header_t *includes; /* URL prefixes to be included. All
* URLs included if empty */
apr_array_header_t *excludes; /* URL prefixes to be excluded. No
* URLs excluded if empty */
apr_time_t expiry_update_time; /* seconds the session expiry may change and
* not have to be rewritten */
int expiry_update_set;
} session_dir_conf;
/**
* Hook to load the session.
*
* If the session doesn't exist, a blank one will be created.
*
* @param r The request
* @param z A pointer to where the session will be written.
*/
APR_DECLARE_EXTERNAL_HOOK(ap, SESSION, apr_status_t, session_load,
(request_rec * r, session_rec ** z))
/**
* Hook to save the session.
*
* In most implementations the session is only saved if the dirty flag is
* true. This prevents the session being saved unnecessarily.
*
* @param r The request
* @param z A pointer to where the session will be written.
*/
APR_DECLARE_EXTERNAL_HOOK(ap, SESSION, apr_status_t, session_save,
(request_rec * r, session_rec * z))
/**
* Hook to encode the session.
*
* In the default implementation, the key value pairs are encoded using
* key value pairs separated by equals, in turn separated by ampersand,
* like a web form.
*
* @param r The request
* @param z A pointer to where the session will be written.
*/
APR_DECLARE_EXTERNAL_HOOK(ap, SESSION, apr_status_t, session_encode,
(request_rec * r, session_rec * z))
/**
* Hook to decode the session.
*
* In the default implementation, the key value pairs are encoded using
* key value pairs separated by equals, in turn separated by ampersand,
* like a web form.
*
* @param r The request
* @param z A pointer to where the session will be written.
*/
APR_DECLARE_EXTERNAL_HOOK(ap, SESSION, apr_status_t, session_decode,
(request_rec * r, session_rec * z))
APR_DECLARE_OPTIONAL_FN(
apr_status_t,
ap_session_get,
(request_rec * r, session_rec * z, const char *key, const char **value));
APR_DECLARE_OPTIONAL_FN(apr_status_t, ap_session_set,
(request_rec * r, session_rec * z, const char *key, const char *value));
APR_DECLARE_OPTIONAL_FN(apr_status_t, ap_session_load,
(request_rec *, session_rec **));
APR_DECLARE_OPTIONAL_FN(apr_status_t, ap_session_save,
(request_rec *, session_rec *));
/**
* The name of the module.
*/
extern module AP_MODULE_DECLARE_DATA session_module;
#endif /* MOD_SESSION_H */
/** @} */