mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
396 lines
8.9 KiB
C
396 lines
8.9 KiB
C
/* $OpenLDAP$ */
|
|
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
|
|
*
|
|
* Copyright 2000-2005 The OpenLDAP Foundation.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted only as authorized by the OpenLDAP
|
|
* Public License.
|
|
*
|
|
* A copy of this license is available in the file LICENSE in the
|
|
* top-level directory of the distribution or, alternatively, at
|
|
* <http://www.OpenLDAP.org/license.html>.
|
|
*/
|
|
/* ACKNOWLEDGEMENT:
|
|
* This work was initially developed by Pierangelo Masarati for
|
|
* inclusion in OpenLDAP Software.
|
|
*/
|
|
|
|
#include <portable.h>
|
|
|
|
#include "rewrite-int.h"
|
|
|
|
/*
|
|
* Compares two cookies
|
|
*/
|
|
static int
|
|
rewrite_cookie_cmp(
|
|
const void *c1,
|
|
const void *c2
|
|
)
|
|
{
|
|
const struct rewrite_session *s1, *s2;
|
|
|
|
s1 = ( const struct rewrite_session * )c1;
|
|
s2 = ( const struct rewrite_session * )c2;
|
|
|
|
assert( s1 != NULL );
|
|
assert( s2 != NULL );
|
|
assert( s1->ls_cookie != NULL );
|
|
assert( s2->ls_cookie != NULL );
|
|
|
|
return ( ( s1->ls_cookie < s2->ls_cookie ) ? -1 :
|
|
( ( s1->ls_cookie > s2->ls_cookie ) ? 1 : 0 ) );
|
|
}
|
|
|
|
/*
|
|
* Duplicate cookies?
|
|
*/
|
|
static int
|
|
rewrite_cookie_dup(
|
|
void *c1,
|
|
void *c2
|
|
)
|
|
{
|
|
struct rewrite_session *s1, *s2;
|
|
|
|
s1 = ( struct rewrite_session * )c1;
|
|
s2 = ( struct rewrite_session * )c2;
|
|
|
|
assert( s1 != NULL );
|
|
assert( s2 != NULL );
|
|
assert( s1->ls_cookie != NULL );
|
|
assert( s2->ls_cookie != NULL );
|
|
|
|
assert( s1->ls_cookie != s2->ls_cookie );
|
|
|
|
return ( ( s1->ls_cookie == s2->ls_cookie ) ? -1 : 0 );
|
|
}
|
|
|
|
/*
|
|
* Inits a session
|
|
*/
|
|
struct rewrite_session *
|
|
rewrite_session_init(
|
|
struct rewrite_info *info,
|
|
const void *cookie
|
|
)
|
|
{
|
|
struct rewrite_session *session, tmp;
|
|
int rc;
|
|
|
|
assert( info != NULL );
|
|
assert( cookie != NULL );
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wlock( &info->li_cookies_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
tmp.ls_cookie = ( void * )cookie;
|
|
session = ( struct rewrite_session * )avl_find( info->li_cookies,
|
|
( caddr_t )&tmp, rewrite_cookie_cmp );
|
|
if ( session ) {
|
|
session->ls_count++;
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
return session;
|
|
}
|
|
|
|
session = calloc( sizeof( struct rewrite_session ), 1 );
|
|
if ( session == NULL ) {
|
|
return NULL;
|
|
}
|
|
session->ls_cookie = ( void * )cookie;
|
|
session->ls_count = 1;
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
if ( ldap_pvt_thread_mutex_init( &session->ls_mutex ) ) {
|
|
free( session );
|
|
return NULL;
|
|
}
|
|
if ( ldap_pvt_thread_rdwr_init( &session->ls_vars_mutex ) ) {
|
|
ldap_pvt_thread_mutex_destroy( &session->ls_mutex );
|
|
free( session );
|
|
return NULL;
|
|
}
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
rc = avl_insert( &info->li_cookies, ( caddr_t )session,
|
|
rewrite_cookie_cmp, rewrite_cookie_dup );
|
|
info->li_num_cookies++;
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
if ( rc != 0 ) {
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_destroy( &session->ls_vars_mutex );
|
|
ldap_pvt_thread_mutex_destroy( &session->ls_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
free( session );
|
|
return NULL;
|
|
}
|
|
|
|
return session;
|
|
}
|
|
|
|
/*
|
|
* Fetches a session
|
|
*/
|
|
struct rewrite_session *
|
|
rewrite_session_find(
|
|
struct rewrite_info *info,
|
|
const void *cookie
|
|
)
|
|
{
|
|
struct rewrite_session *session, tmp;
|
|
|
|
assert( info != NULL );
|
|
assert( cookie != NULL );
|
|
|
|
tmp.ls_cookie = ( void * )cookie;
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_rlock( &info->li_cookies_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
session = ( struct rewrite_session * )avl_find( info->li_cookies,
|
|
( caddr_t )&tmp, rewrite_cookie_cmp );
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
if ( session ) {
|
|
ldap_pvt_thread_mutex_lock( &session->ls_mutex );
|
|
}
|
|
ldap_pvt_thread_rdwr_runlock( &info->li_cookies_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
return session;
|
|
}
|
|
|
|
/*
|
|
* Returns a session
|
|
*/
|
|
void
|
|
rewrite_session_return(
|
|
struct rewrite_info *info,
|
|
struct rewrite_session *session
|
|
)
|
|
{
|
|
assert( session != NULL );
|
|
ldap_pvt_thread_mutex_unlock( &session->ls_mutex );
|
|
}
|
|
|
|
/*
|
|
* Defines and inits a var with session scope
|
|
*/
|
|
int
|
|
rewrite_session_var_set_f(
|
|
struct rewrite_info *info,
|
|
const void *cookie,
|
|
const char *name,
|
|
const char *value,
|
|
int flags
|
|
)
|
|
{
|
|
struct rewrite_session *session;
|
|
struct rewrite_var *var;
|
|
|
|
assert( info != NULL );
|
|
assert( cookie != NULL );
|
|
assert( name != NULL );
|
|
assert( value != NULL );
|
|
|
|
session = rewrite_session_find( info, cookie );
|
|
if ( session == NULL ) {
|
|
session = rewrite_session_init( info, cookie );
|
|
}
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wlock( &session->ls_vars_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
var = rewrite_var_find( session->ls_vars, name );
|
|
if ( var != NULL ) {
|
|
assert( var->lv_value.bv_val != NULL );
|
|
|
|
(void)rewrite_var_replace( var, value, flags );
|
|
|
|
} else {
|
|
var = rewrite_var_insert_f( &session->ls_vars, name, value, flags );
|
|
if ( var == NULL ) {
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wunlock( &session->ls_vars_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
rewrite_session_return( info, session );
|
|
return REWRITE_ERR;
|
|
}
|
|
}
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wunlock( &session->ls_vars_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
rewrite_session_return( info, session );
|
|
|
|
return REWRITE_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Gets a var with session scope
|
|
*/
|
|
int
|
|
rewrite_session_var_get(
|
|
struct rewrite_info *info,
|
|
const void *cookie,
|
|
const char *name,
|
|
struct berval *value
|
|
)
|
|
{
|
|
struct rewrite_session *session;
|
|
struct rewrite_var *var;
|
|
|
|
assert( info != NULL );
|
|
assert( cookie != NULL );
|
|
assert( name != NULL );
|
|
assert( value != NULL );
|
|
|
|
value->bv_val = NULL;
|
|
value->bv_len = 0;
|
|
|
|
if ( cookie == NULL ) {
|
|
return REWRITE_ERR;
|
|
}
|
|
|
|
session = rewrite_session_find( info, cookie );
|
|
if ( session == NULL ) {
|
|
return REWRITE_ERR;
|
|
}
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_rlock( &session->ls_vars_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
var = rewrite_var_find( session->ls_vars, name );
|
|
if ( var == NULL ) {
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_runlock( &session->ls_vars_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
rewrite_session_return( info, session );
|
|
|
|
return REWRITE_ERR;
|
|
} else {
|
|
value->bv_val = strdup( var->lv_value.bv_val );
|
|
value->bv_len = var->lv_value.bv_len;
|
|
}
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_runlock( &session->ls_vars_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
rewrite_session_return( info, session );
|
|
|
|
return REWRITE_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Deletes a session
|
|
*/
|
|
int
|
|
rewrite_session_delete(
|
|
struct rewrite_info *info,
|
|
const void *cookie
|
|
)
|
|
{
|
|
struct rewrite_session *session, tmp;
|
|
|
|
assert( info != NULL );
|
|
assert( cookie != NULL );
|
|
|
|
tmp.ls_cookie = ( void * )cookie;
|
|
|
|
session = rewrite_session_find( info, cookie );
|
|
|
|
if ( session == NULL ) {
|
|
return REWRITE_SUCCESS;
|
|
}
|
|
|
|
if ( --session->ls_count > 0 ) {
|
|
rewrite_session_return( info, session );
|
|
return REWRITE_SUCCESS;
|
|
}
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wlock( &session->ls_vars_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
rewrite_var_delete( session->ls_vars );
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wunlock( &session->ls_vars_mutex );
|
|
ldap_pvt_thread_rdwr_destroy( &session->ls_vars_mutex );
|
|
ldap_pvt_thread_mutex_unlock( &session->ls_mutex );
|
|
ldap_pvt_thread_mutex_destroy( &session->ls_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wlock( &info->li_cookies_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
assert( info->li_num_cookies > 0 );
|
|
info->li_num_cookies--;
|
|
|
|
/*
|
|
* There is nothing to delete in the return value
|
|
*/
|
|
avl_delete( &info->li_cookies, ( caddr_t )&tmp, rewrite_cookie_cmp );
|
|
free( session );
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
return REWRITE_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Destroys the cookie tree
|
|
*/
|
|
int
|
|
rewrite_session_destroy(
|
|
struct rewrite_info *info
|
|
)
|
|
{
|
|
int count;
|
|
|
|
assert( info != NULL );
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wlock( &info->li_cookies_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
/*
|
|
* Should call per-session destruction routine ...
|
|
*/
|
|
|
|
count = avl_free( info->li_cookies, NULL );
|
|
info->li_cookies = NULL;
|
|
|
|
#if 0
|
|
fprintf( stderr, "count = %d; num_cookies = %d\n",
|
|
count, info->li_num_cookies );
|
|
#endif
|
|
|
|
assert( count == info->li_num_cookies );
|
|
info->li_num_cookies = 0;
|
|
|
|
#ifdef USE_REWRITE_LDAP_PVT_THREADS
|
|
ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
|
|
#endif /* USE_REWRITE_LDAP_PVT_THREADS */
|
|
|
|
return REWRITE_SUCCESS;
|
|
}
|
|
|