1 /******************************************************************************
3 * Copyright (C) 2000 Pierangelo Masarati, <ando@sys-net.it>
6 * Permission is granted to anyone to use this software for any purpose
7 * on any computer system, and to alter it and redistribute it, subject
8 * to the following restrictions:
10 * 1. The author is not responsible for the consequences of use of this
11 * software, no matter how awful, even if they arise from flaws in it.
13 * 2. The origin of this software must not be misrepresented, either by
14 * explicit claim or by omission. Since few users ever read sources,
15 * credits should appear in the documentation.
17 * 3. Altered versions must be plainly marked as such, and must not be
18 * misrepresented as being the original software. Since few users
19 * ever read sources, credits should appear in the documentation.
21 * 4. This notice may not be removed or altered.
23 ******************************************************************************/
27 #include "rewrite-int.h"
30 * Compares two cookies
38 const struct rewrite_session *s1, *s2;
40 s1 = ( const struct rewrite_session * )c1;
41 s2 = ( const struct rewrite_session * )c2;
45 assert( s1->ls_cookie != NULL );
46 assert( s2->ls_cookie != NULL );
48 return ( ( s1->ls_cookie < s2->ls_cookie ) ? -1 :
49 ( ( s1->ls_cookie > s2->ls_cookie ) ? 1 : 0 ) );
61 struct rewrite_session *s1, *s2;
63 s1 = ( struct rewrite_session * )c1;
64 s2 = ( struct rewrite_session * )c2;
68 assert( s1->ls_cookie != NULL );
69 assert( s2->ls_cookie != NULL );
71 assert( s1->ls_cookie != s2->ls_cookie );
73 return ( ( s1->ls_cookie == s2->ls_cookie ) ? -1 : 0 );
79 struct rewrite_session *
81 struct rewrite_info *info,
85 struct rewrite_session *session, tmp;
88 assert( info != NULL );
89 assert( cookie != NULL );
91 #ifdef USE_REWRITE_LDAP_PVT_THREADS
92 ldap_pvt_thread_rdwr_wlock( &info->li_cookies_mutex );
93 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
95 tmp.ls_cookie = ( void * )cookie;
96 session = ( struct rewrite_session * )avl_find( info->li_cookies,
97 ( caddr_t )&tmp, rewrite_cookie_cmp );
100 #ifdef USE_REWRITE_LDAP_PVT_THREADS
101 ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
102 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
106 session = calloc( sizeof( struct rewrite_session ), 1 );
107 if ( session == NULL ) {
110 session->ls_cookie = ( void * )cookie;
111 session->ls_count = 1;
113 #ifdef USE_REWRITE_LDAP_PVT_THREADS
114 if ( ldap_pvt_thread_mutex_init( &session->ls_mutex ) ) {
118 if ( ldap_pvt_thread_rdwr_init( &session->ls_vars_mutex ) ) {
119 ldap_pvt_thread_mutex_destroy( &session->ls_mutex );
123 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
125 rc = avl_insert( &info->li_cookies, ( caddr_t )session,
126 rewrite_cookie_cmp, rewrite_cookie_dup );
127 info->li_num_cookies++;
129 #ifdef USE_REWRITE_LDAP_PVT_THREADS
130 ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
131 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
134 #ifdef USE_REWRITE_LDAP_PVT_THREADS
135 ldap_pvt_thread_rdwr_destroy( &session->ls_vars_mutex );
136 ldap_pvt_thread_mutex_destroy( &session->ls_mutex );
137 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
149 struct rewrite_session *
150 rewrite_session_find(
151 struct rewrite_info *info,
155 struct rewrite_session *session, tmp;
157 assert( info != NULL );
158 assert( cookie != NULL );
160 tmp.ls_cookie = ( void * )cookie;
161 #ifdef USE_REWRITE_LDAP_PVT_THREADS
162 ldap_pvt_thread_rdwr_rlock( &info->li_cookies_mutex );
163 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
164 session = ( struct rewrite_session * )avl_find( info->li_cookies,
165 ( caddr_t )&tmp, rewrite_cookie_cmp );
166 #ifdef USE_REWRITE_LDAP_PVT_THREADS
168 ldap_pvt_thread_mutex_lock( &session->ls_mutex );
170 ldap_pvt_thread_rdwr_runlock( &info->li_cookies_mutex );
171 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
180 rewrite_session_return(
181 struct rewrite_info *info,
182 struct rewrite_session *session
186 ldap_pvt_thread_mutex_unlock( &session->ls_mutex );
190 * Defines and inits a var with session scope
193 rewrite_session_var_set(
194 struct rewrite_info *info,
200 struct rewrite_session *session;
201 struct rewrite_var *var;
203 assert( info != NULL );
204 assert( cookie != NULL );
205 assert( name != NULL );
206 assert( value != NULL );
208 session = rewrite_session_find( info, cookie );
209 if ( session == NULL ) {
210 session = rewrite_session_init( info, cookie );
213 #ifdef USE_REWRITE_LDAP_PVT_THREADS
214 ldap_pvt_thread_rdwr_wlock( &session->ls_vars_mutex );
215 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
217 var = rewrite_var_find( session->ls_vars, name );
219 assert( var->lv_value.bv_val != NULL );
220 free( var->lv_value.bv_val );
221 var->lv_value.bv_val = strdup( value );
222 var->lv_value.bv_len = strlen( value );
224 var = rewrite_var_insert( &session->ls_vars, name, value );
226 #ifdef USE_REWRITE_LDAP_PVT_THREADS
227 ldap_pvt_thread_rdwr_wunlock( &session->ls_vars_mutex );
228 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
229 rewrite_session_return( info, session );
234 #ifdef USE_REWRITE_LDAP_PVT_THREADS
235 ldap_pvt_thread_rdwr_wunlock( &session->ls_vars_mutex );
236 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
238 rewrite_session_return( info, session );
240 return REWRITE_SUCCESS;
244 * Gets a var with session scope
247 rewrite_session_var_get(
248 struct rewrite_info *info,
254 struct rewrite_session *session;
255 struct rewrite_var *var;
257 assert( info != NULL );
258 assert( cookie != NULL );
259 assert( name != NULL );
260 assert( value != NULL );
262 value->bv_val = NULL;
265 if ( cookie == NULL ) {
269 session = rewrite_session_find( info, cookie );
270 if ( session == NULL ) {
274 #ifdef USE_REWRITE_LDAP_PVT_THREADS
275 ldap_pvt_thread_rdwr_rlock( &session->ls_vars_mutex );
276 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
278 var = rewrite_var_find( session->ls_vars, name );
281 #ifdef USE_REWRITE_LDAP_PVT_THREADS
282 ldap_pvt_thread_rdwr_runlock( &session->ls_vars_mutex );
283 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
285 rewrite_session_return( info, session );
289 value->bv_val = strdup( var->lv_value.bv_val );
290 value->bv_len = var->lv_value.bv_len;
293 #ifdef USE_REWRITE_LDAP_PVT_THREADS
294 ldap_pvt_thread_rdwr_runlock( &session->ls_vars_mutex );
295 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
297 rewrite_session_return( info, session );
299 return REWRITE_SUCCESS;
306 rewrite_session_delete(
307 struct rewrite_info *info,
311 struct rewrite_session *session, tmp;
313 assert( info != NULL );
314 assert( cookie != NULL );
316 tmp.ls_cookie = ( void * )cookie;
318 session = rewrite_session_find( info, cookie );
320 if ( session != NULL ) {
321 if ( --session->ls_count > 0 ) {
322 rewrite_session_return( info, session );
323 return REWRITE_SUCCESS;
326 #ifdef USE_REWRITE_LDAP_PVT_THREADS
327 ldap_pvt_thread_rdwr_wlock( &session->ls_vars_mutex );
328 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
330 rewrite_var_delete( session->ls_vars );
332 #ifdef USE_REWRITE_LDAP_PVT_THREADS
333 ldap_pvt_thread_rdwr_destroy( &session->ls_vars_mutex );
334 ldap_pvt_thread_mutex_destroy( &session->ls_mutex );
335 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
338 #ifdef USE_REWRITE_LDAP_PVT_THREADS
339 ldap_pvt_thread_rdwr_wlock( &info->li_cookies_mutex );
340 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
342 assert( info->li_num_cookies > 0 );
343 info->li_num_cookies--;
346 * There is nothing to delete in the return value
348 avl_delete( &info->li_cookies, ( caddr_t )&tmp, rewrite_cookie_cmp );
351 #ifdef USE_REWRITE_LDAP_PVT_THREADS
352 ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
353 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
355 return REWRITE_SUCCESS;
359 * Destroys the cookie tree
362 rewrite_session_destroy(
363 struct rewrite_info *info
368 assert( info != NULL );
370 #ifdef USE_REWRITE_LDAP_PVT_THREADS
371 ldap_pvt_thread_rdwr_wlock( &info->li_cookies_mutex );
372 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
375 * Should call per-session destruction routine ...
378 count = avl_free( info->li_cookies, NULL );
379 info->li_cookies = NULL;
382 fprintf( stderr, "count = %d; num_cookies = %d\n",
383 count, info->li_num_cookies );
386 assert( count == info->li_num_cookies );
387 info->li_num_cookies = 0;
389 #ifdef USE_REWRITE_LDAP_PVT_THREADS
390 ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
391 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
393 return REWRITE_SUCCESS;