mirror of
https://github.com/SKUDONET/zproxy.git
synced 2025-10-26 11:27:35 +00:00
d2ba5edb99
Remove the defunct variable from zproxy_session_node, and simply use refcnt. Signed-off-by: Nicolás A. Ortega Froysa <nicolas.ortega@zevenet.com>
90 lines
3.3 KiB
C
90 lines
3.3 KiB
C
/*
|
|
* Copyright (C) 2023 Zevenet S.L. <support@zevenet.com>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef _ZPROXY_SESSION_H_
|
|
#define _ZPROXY_SESSION_H_
|
|
|
|
#include <pthread.h>
|
|
#include <stdbool.h>
|
|
#include "list.h"
|
|
#include "config.h"
|
|
|
|
#define MAX_SESSION_ID 255
|
|
#define HASH_SESSION_SLOTS 512
|
|
|
|
struct zproxy_sessions {
|
|
struct list_head session_hashtable[HASH_SESSION_SLOTS];
|
|
SESS_TYPE type;
|
|
unsigned int ttl;
|
|
char id[MAX_SESSION_ID];
|
|
unsigned int size;
|
|
pthread_mutex_t sessions_mutex = PTHREAD_MUTEX_INITIALIZER;
|
|
};
|
|
|
|
struct zproxy_session_node {
|
|
struct list_head hlist;
|
|
char key[MAX_SESSION_ID];
|
|
struct sockaddr_in bck_addr;
|
|
// last_seen is used to calculate if the session has expired.
|
|
// If it has the value 0 means that the session does not expired, it is permanent
|
|
unsigned int timestamp;
|
|
struct zproxy_sessions *sessions_group;
|
|
int refcnt;
|
|
};
|
|
|
|
void zproxy_sessions_dump(struct zproxy_sessions *sessions);
|
|
struct zproxy_sessions *zproxy_sessions_alloc(const struct zproxy_service_cfg *service_cfg);
|
|
void zproxy_sessions_flush(struct zproxy_sessions *sessions);
|
|
void zproxy_sessions_free(struct zproxy_sessions *sessions);
|
|
/**
|
|
* @brief Get a reference to session with provided key.
|
|
*
|
|
* @param sessions Service sessions structure to which the session belongs.
|
|
* @param key Unique key that identifies the session.
|
|
*
|
|
* @return A pointer to the session that must be released with
|
|
* zproxy_session_free(). If not found it will return NULL.
|
|
*/
|
|
struct zproxy_session_node *
|
|
zproxy_session_get(struct zproxy_sessions *sessions, const char *key);
|
|
/**
|
|
* @brief Create/Add a new session.
|
|
*
|
|
* @param sessions Service sessions structure to which the session will belong.
|
|
* @param key Unique key that identifies the session.
|
|
* @param bck Backend associated with the new session.
|
|
*
|
|
* @return A pointer to the session that must be released with
|
|
* zproxy_session_free(). If fails to add it will return NULL.
|
|
*/
|
|
struct zproxy_session_node *
|
|
zproxy_session_add(struct zproxy_sessions *sessions, const char *key,
|
|
const struct sockaddr_in *bck);
|
|
/**
|
|
* @brief Release reference to the session.
|
|
*
|
|
* @param session Session to release.
|
|
*/
|
|
void zproxy_session_free(struct zproxy_session_node **session);
|
|
void zproxy_sessions_remove_expired(struct zproxy_sessions *sessions);
|
|
void zproxy_session_delete_backend(struct zproxy_sessions *sessions, const struct sockaddr_in *bck);
|
|
int zproxy_session_delete(struct zproxy_sessions *sessions, const char *key);
|
|
int zproxy_session_update(struct zproxy_sessions *sessions, const char *key, const struct sockaddr_in *bck, unsigned int timestamp);
|
|
void zproxy_session_delete_old_backends(const struct zproxy_service_cfg *service, struct zproxy_sessions *sessions);
|
|
|
|
#endif
|