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/*
* AppSession functions.
*
* Copyright 2004-2006 Alexander Lazic, Klaus Wagner
* Copyright 2006-2009 Willy Tarreau
*
* 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.
*
*/
#include <stdio.h>
#include <string.h>
#include <common/appsession.h>
#include <common/config.h>
#include <common/memory.h>
#include <common/sessionhash.h>
#include <common/ticks.h>
#include <common/time.h>
#include <types/global.h>
#include <proto/proxy.h>
#include <proto/task.h>
static struct task *appsess_refresh = NULL;
struct pool_head *pool2_appsess;
struct app_pool apools;
int have_appsession;
int appsession_init(void)
{
static int initialized = 0;
int idlen;
struct server *s;
struct proxy *p = proxy;
if (!initialized) {
pool2_appsess = create_pool("appsess", sizeof(appsess), MEM_F_SHARED);
if (pool2_appsess == NULL)
return -1;
if (!appsession_task_init()) {
int ser_msize, ses_msize;
apools.sessid = NULL;
apools.serverid = NULL;
ser_msize = sizeof(void *);
ses_msize = sizeof(void *);
while (p) {
s = p->srv;
if (ses_msize < p->appsession_len)
ses_msize = p->appsession_len;
while (s) {
idlen = strlen(s->id);
if (ser_msize < idlen)
ser_msize = idlen;
s = s->next;
}
p = p->next;
}
/* we use strings, so reserve space for '\0' */
ser_msize ++;
ses_msize ++;
apools.sessid = create_pool("sessid", ses_msize, MEM_F_SHARED);
if (!apools.sessid)
return -1;
apools.serverid = create_pool("serverid", ser_msize, MEM_F_SHARED);
if (!apools.serverid)
return -1;
}
else {
fprintf(stderr, "appsession_task_init failed\n");
return -1;
}
initialized ++;
}
return 0;
}
static struct task *appsession_refresh(struct task *t)
{
struct proxy *p = proxy;
struct appsession_hash *htbl;
appsess *element, *back;
int i;
while (p) {
if (p->appsession_name != NULL) {
htbl = &p->htbl_proxy;
as_hash_for_each_entry_safe(i, element, back, &p->htbl_proxy, hash_list) {
if (tick_is_expired(element->expire, now_ms)) {
if ((global.mode & MODE_DEBUG) &&
(!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
chunk_printf(&trash, "appsession_refresh: cleaning up expired Session '%s' on Server %s\n",
element->sessid, element->serverid?element->serverid:"(null)");
shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
}
/* delete the expired element from within the hash table */
LIST_DEL(&element->hash_list);
htbl->destroy(element);
}/* end if (tv_isle(&asession->expire, &now)) */
}
}
p = p->next;
}
t->expire = tick_add(now_ms, MS_TO_TICKS(TBLCHKINT)); /* check expiration every 5 seconds */
return t;
} /* end appsession_refresh */
int appsession_task_init(void)
{
static int initialized = 0;
if (!initialized) {
if ((appsess_refresh = task_new()) == NULL)
return -1;
appsess_refresh->context = NULL;
appsess_refresh->expire = tick_add(now_ms, MS_TO_TICKS(TBLCHKINT));
appsess_refresh->process = appsession_refresh;
task_queue(appsess_refresh);
initialized ++;
}
return 0;
}
int match_str(const void *key1, const void *key2)
{
appsess *temp1,*temp2;
temp1 = (appsess *)key1;
temp2 = (appsess *)key2;
//fprintf(stdout,">>>>>>>>>>>>>>temp1->sessid :%s:\n",temp1->sessid);
//fprintf(stdout,">>>>>>>>>>>>>>temp2->sessid :%s:\n",temp2->sessid);
return (strcmp(temp1->sessid,temp2->sessid) == 0);
}/* end match_str */
void destroy(appsess *temp1) {
pool_free2(apools.sessid, temp1->sessid);
pool_free2(apools.serverid, temp1->serverid);
pool_free2(pool2_appsess, temp1);
} /* end destroy */
void appsession_cleanup( void )
{
struct proxy *p = proxy;
while(p) {
appsession_hash_destroy(&(p->htbl_proxy));
p = p->next;
}
if (appsess_refresh) {
task_delete(appsess_refresh);
task_free(appsess_refresh);
appsess_refresh = NULL;
}
}/* end appsession_cleanup() */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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