1 /* bind.c - ldap backend bind function */
4 * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
5 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
7 /* This is an altered version */
9 * Copyright 1999, Howard Chu, All rights reserved. <hyc@highlandsun.com>
11 * Permission is granted to anyone to use this software for any purpose
12 * on any computer system, and to alter it and redistribute it, subject
13 * to the following restrictions:
15 * 1. The author is not responsible for the consequences of use of this
16 * software, no matter how awful, even if they arise from flaws in it.
18 * 2. The origin of this software must not be misrepresented, either by
19 * explicit claim or by omission. Since few users ever read sources,
20 * credits should appear in the documentation.
22 * 3. Altered versions must be plainly marked as such, and must not be
23 * misrepresented as being the original software. Since few users
24 * ever read sources, credits should appear in the documentation.
26 * 4. This notice may not be removed or altered.
30 * Copyright 2000, Pierangelo Masarati, All rights reserved. <ando@sys-net.it>
32 * This software is being modified by Pierangelo Masarati.
33 * The previously reported conditions apply to the modified code as well.
34 * Changes in the original code are highlighted where required.
35 * Credits for the original code go to the author, Howard Chu.
42 #include <ac/socket.h>
43 #include <ac/string.h>
48 #include "back-ldap.h"
50 #define PRINT_CONNTREE 0
52 static LDAP_REBIND_PROC ldap_back_rebind;
66 struct ldapinfo *li = (struct ldapinfo *) be->be_private;
69 struct berval mdn = { 0, NULL };
72 lc = ldap_back_getconn(li, conn, op);
78 if ( ldap_set_option( lc->ld, LDAP_OPT_SERVER_CONTROLS,
79 op->o_ctrls ) != LDAP_SUCCESS ) {
80 ldap_back_op_result( lc, op );
86 * Rewrite the bind dn if needed
89 switch ( rewrite_session( li->rwinfo, "bindDn", dn->bv_val, conn, &mdn.bv_val ) ) {
90 case REWRITE_REGEXEC_OK:
91 if ( mdn.bv_val == NULL ) {
92 mdn.bv_val = ( char * )dn->bv_val;
95 LDAP_LOG( BACK_LDAP, DETAIL1,
96 "[rw] bindDn: \"%s\" -> \"%s\"\n", dn->bv_val, mdn.bv_val, 0 );
97 #else /* !NEW_LOGGING */
98 Debug( LDAP_DEBUG_ARGS, "rw> bindDn: \"%s\" -> \"%s\"\n%s",
99 dn->bv_val, mdn.bv_val, "" );
100 #endif /* !NEW_LOGGING */
103 case REWRITE_REGEXEC_UNWILLING:
104 send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
105 NULL, "Operation not allowed", NULL, NULL );
108 case REWRITE_REGEXEC_ERR:
109 send_ldap_result( conn, op, LDAP_OTHER,
110 NULL, "Rewrite error", NULL, NULL );
113 #else /* !ENABLE_REWRITE */
114 ldap_back_dn_massage( li, dn, &mdn, 0, 1 );
115 #endif /* !ENABLE_REWRITE */
117 rc = ldap_bind_s(lc->ld, mdn.bv_val, cred->bv_val, method);
118 if (rc != LDAP_SUCCESS) {
119 rc = ldap_back_op_result( lc, op );
124 if ( li->savecred ) {
125 if ( lc->cred.bv_val )
126 ch_free( lc->cred.bv_val );
127 ber_dupbv( &lc->cred, cred );
128 ldap_set_rebind_proc( lc->ld, ldap_back_rebind, lc );
131 if ( lc->bound_dn.bv_val )
132 ch_free( lc->bound_dn.bv_val );
133 if ( mdn.bv_val != dn->bv_val ) {
136 ber_dupbv( &lc->bound_dn, dn );
145 * compares two struct ldapconn based on the value of the conn pointer;
154 const struct ldapconn *lc1 = (const struct ldapconn *)c1;
155 const struct ldapconn *lc2 = (const struct ldapconn *)c2;
157 return ( ( lc1->conn < lc2->conn ) ? -1 : ( ( lc1->conn > lc2-> conn ) ? 1 : 0 ) );
163 * returns -1 in case a duplicate struct ldapconn has been inserted;
172 struct ldapconn *lc1 = (struct ldapconn *)c1;
173 struct ldapconn *lc2 = (struct ldapconn *)c2;
175 return( ( lc1->conn == lc2->conn ) ? -1 : 0 );
178 #if PRINT_CONNTREE > 0
179 static void ravl_print( Avlnode *root, int depth )
186 ravl_print( root->avl_right, depth+1 );
188 for ( i = 0; i < depth; i++ )
191 printf( "c(%ld) %d\n", ((struct ldapconn *) root->avl_data)->conn->c_connid, root->avl_bf );
193 ravl_print( root->avl_left, depth+1 );
196 static void myprint( Avlnode *root )
198 printf( "********\n" );
201 printf( "\tNULL\n" );
204 ravl_print( root, 0 );
206 printf( "********\n" );
208 #endif /* PRINT_CONNTREE */
211 ldap_back_getconn(struct ldapinfo *li, Connection *conn, Operation *op)
213 struct ldapconn *lc, lc_curr;
216 /* Searches for a ldapconn in the avl tree */
218 ldap_pvt_thread_mutex_lock( &li->conn_mutex );
219 lc = (struct ldapconn *)avl_find( li->conntree,
220 (caddr_t)&lc_curr, ldap_back_conn_cmp );
221 ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
223 /* Looks like we didn't get a bind. Open a new session... */
225 int vers = conn->c_protocol;
226 int err = ldap_initialize(&ld, li->url);
228 if (err != LDAP_SUCCESS) {
229 err = ldap_back_map_result(err);
230 send_ldap_result( conn, op, err,
231 NULL, "ldap_initialize() failed", NULL, NULL );
234 /* Set LDAP version. This will always succeed: If the client
235 * bound with a particular version, then so can we.
237 ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, &vers);
239 lc = (struct ldapconn *)ch_malloc(sizeof(struct ldapconn));
244 lc->cred.bv_val = NULL;
246 #ifdef ENABLE_REWRITE
248 * Sets a cookie for the rewrite session
250 ( void )rewrite_session_init( li->rwinfo, conn );
251 #endif /* ENABLE_REWRITE */
253 if ( lc->conn->c_dn.bv_len != 0 ) {
256 * Rewrite the bind dn if needed
258 #ifdef ENABLE_REWRITE
259 lc->bound_dn.bv_val = NULL;
260 lc->bound_dn.bv_len = 0;
261 switch ( rewrite_session( li->rwinfo, "bindDn",
262 lc->conn->c_dn.bv_val, conn,
263 &lc->bound_dn.bv_val ) ) {
264 case REWRITE_REGEXEC_OK:
265 if ( lc->bound_dn.bv_val == NULL ) {
266 ber_dupbv( &lc->bound_dn,
270 LDAP_LOG( BACK_LDAP, DETAIL1,
271 "[rw] bindDn: \"%s\" ->"
273 lc->conn->c_dn.bv_val,
274 lc->bound_dn.bv_val, "" );
275 #else /* !NEW_LOGGING */
276 Debug( LDAP_DEBUG_ARGS,
277 "rw> bindDn: \"%s\" ->"
279 lc->conn->c_dn.bv_val,
280 lc->bound_dn.bv_val, "" );
281 #endif /* !NEW_LOGGING */
284 case REWRITE_REGEXEC_UNWILLING:
285 send_ldap_result( conn, op,
286 LDAP_UNWILLING_TO_PERFORM,
287 NULL, "Operation not allowed",
291 case REWRITE_REGEXEC_ERR:
292 send_ldap_result( conn, op,
294 NULL, "Rewrite error",
299 #else /* !ENABLE_REWRITE */
301 ldap_back_dn_massage( li, &lc->conn->c_dn, &bv, 0, 1 );
302 if ( bv.bv_val == lc->conn->c_dn.bv_val ) {
303 ber_dupbv( &lc->bound_dn, &bv );
307 #endif /* !ENABLE_REWRITE */
310 lc->bound_dn.bv_val = NULL;
311 lc->bound_dn.bv_len = 0;
315 /* Inserts the newly created ldapconn in the avl tree */
316 ldap_pvt_thread_mutex_lock( &li->conn_mutex );
317 err = avl_insert( &li->conntree, (caddr_t)lc,
318 ldap_back_conn_cmp, ldap_back_conn_dup );
320 #if PRINT_CONNTREE > 0
321 myprint( li->conntree );
322 #endif /* PRINT_CONNTREE */
324 ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
327 LDAP_LOG( BACK_LDAP, INFO,
328 "ldap_back_getconn: conn %ld inserted\n", lc->conn->c_connid, 0, 0);
329 #else /* !NEW_LOGGING */
330 Debug( LDAP_DEBUG_TRACE,
331 "=>ldap_back_getconn: conn %ld inserted\n%s%s",
332 lc->conn->c_connid, "", "" );
333 #endif /* !NEW_LOGGING */
335 /* Err could be -1 in case a duplicate ldapconn is inserted */
337 send_ldap_result( conn, op, LDAP_OTHER,
338 NULL, "internal server error", NULL, NULL );
339 /* better destroy the ldapconn struct? */
344 LDAP_LOG( BACK_LDAP, INFO,
345 "ldap_back_getconn: conn %ld inserted\n",
346 lc->conn->c_connid, 0, 0 );
347 #else /* !NEW_LOGGING */
348 Debug( LDAP_DEBUG_TRACE,
349 "=>ldap_back_getconn: conn %ld fetched%s%s\n",
350 lc->conn->c_connid, "", "" );
351 #endif /* !NEW_LOGGING */
360 * Note: as the check for the value of lc->bound was already here, I removed
361 * it from all the callers, and I made the function return the flag, so
362 * it can be used to simplify the check.
365 ldap_back_dobind( struct ldapconn *lc, Operation *op )
368 if ( ldap_set_option( lc->ld, LDAP_OPT_SERVER_CONTROLS,
369 op->o_ctrls ) != LDAP_SUCCESS ) {
370 ldap_back_op_result( lc, op );
379 if ( ldap_bind_s( lc->ld, lc->bound_dn.bv_val, lc->cred.bv_val,
380 LDAP_AUTH_SIMPLE ) != LDAP_SUCCESS ) {
381 ldap_back_op_result( lc, op );
384 return( lc->bound = 1 );
390 * This is a callback used for chasing referrals using the same
391 * credentials as the original user on this session.
394 ldap_back_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
395 ber_int_t msgid, void *params )
397 struct ldapconn *lc = params;
399 return ldap_bind_s( ld, lc->bound_dn.bv_val, lc->cred.bv_val, LDAP_AUTH_SIMPLE );
402 /* Map API errors to protocol errors... */
405 ldap_back_map_result(int err)
409 case LDAP_SERVER_DOWN:
410 return LDAP_UNAVAILABLE;
411 case LDAP_LOCAL_ERROR:
413 case LDAP_ENCODING_ERROR:
414 case LDAP_DECODING_ERROR:
415 return LDAP_PROTOCOL_ERROR;
417 return LDAP_UNAVAILABLE;
418 case LDAP_AUTH_UNKNOWN:
419 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
420 case LDAP_FILTER_ERROR:
422 case LDAP_USER_CANCELLED:
424 case LDAP_PARAM_ERROR:
425 return LDAP_PROTOCOL_ERROR;
428 case LDAP_CONNECT_ERROR:
429 return LDAP_UNAVAILABLE;
430 case LDAP_NOT_SUPPORTED:
431 return LDAP_UNWILLING_TO_PERFORM;
432 case LDAP_CONTROL_NOT_FOUND:
433 return LDAP_PROTOCOL_ERROR;
434 case LDAP_NO_RESULTS_RETURNED:
435 return LDAP_NO_SUCH_OBJECT;
436 case LDAP_MORE_RESULTS_TO_RETURN:
438 case LDAP_CLIENT_LOOP:
439 case LDAP_REFERRAL_LIMIT_EXCEEDED:
440 return LDAP_LOOP_DETECT;
442 if LDAP_API_ERROR(err)
450 ldap_back_op_result(struct ldapconn *lc, Operation *op)
452 int err = LDAP_SUCCESS;
456 ldap_get_option(lc->ld, LDAP_OPT_ERROR_NUMBER, &err);
457 ldap_get_option(lc->ld, LDAP_OPT_ERROR_STRING, &msg);
458 ldap_get_option(lc->ld, LDAP_OPT_MATCHED_DN, &match);
459 err = ldap_back_map_result(err);
461 #ifdef ENABLE_REWRITE
464 * FIXME: need rewrite info for match; mmmh ...
466 send_ldap_result( lc->conn, op, err, match, msg, NULL, NULL );
467 /* better test the pointers before freeing? */
472 #else /* !ENABLE_REWRITE */
474 send_ldap_result( lc->conn, op, err, match, msg, NULL, NULL );
475 /* better test the pointers before freeing? */
480 #endif /* !ENABLE_REWRITE */
482 if ( msg ) free( msg );
483 return( (err==LDAP_SUCCESS) ? 0 : -1 );