1 /* bind.c - ldap backend bind function */
4 * Copyright 1998-2002 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 ldap_set_option( lc->ld, LDAP_OPT_SERVER_CONTROLS, op->o_ctrls );
82 * Rewrite the bind dn if needed
85 switch ( rewrite_session( li->rwinfo, "bindDn", dn->bv_val, conn, &mdn.bv_val ) ) {
86 case REWRITE_REGEXEC_OK:
87 if ( mdn.bv_val == NULL ) {
88 mdn.bv_val = ( char * )dn->bv_val;
91 LDAP_LOG( BACK_LDAP, DETAIL1,
92 "[rw] bindDn: \"%s\" -> \"%s\"\n", dn->bv_val, mdn.bv_val, 0 );
93 #else /* !NEW_LOGGING */
94 Debug( LDAP_DEBUG_ARGS, "rw> bindDn: \"%s\" -> \"%s\"\n%s",
95 dn->bv_val, mdn.bv_val, "" );
96 #endif /* !NEW_LOGGING */
99 case REWRITE_REGEXEC_UNWILLING:
100 send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
101 NULL, "Unwilling to perform", NULL, NULL );
104 case REWRITE_REGEXEC_ERR:
105 send_ldap_result( conn, op, LDAP_OTHER,
106 NULL, "Operations error", NULL, NULL );
109 #else /* !ENABLE_REWRITE */
110 ldap_back_dn_massage( li, dn, &mdn, 0, 1 );
111 #endif /* !ENABLE_REWRITE */
113 rc = ldap_bind_s(lc->ld, mdn.bv_val, cred->bv_val, method);
114 if (rc != LDAP_SUCCESS) {
115 rc = ldap_back_op_result( lc, op );
120 if ( li->savecred ) {
121 if ( lc->cred.bv_val )
122 ch_free( lc->cred.bv_val );
123 ber_dupbv( &lc->cred, cred );
124 ldap_set_rebind_proc( lc->ld, ldap_back_rebind, lc );
127 if ( lc->bound_dn.bv_val )
128 ch_free( lc->bound_dn.bv_val );
129 if ( mdn.bv_val != dn->bv_val ) {
132 ber_dupbv( &lc->bound_dn, dn );
141 * compares two struct ldapconn based on the value of the conn pointer;
150 const struct ldapconn *lc1 = (const struct ldapconn *)c1;
151 const struct ldapconn *lc2 = (const struct ldapconn *)c2;
153 return ( ( lc1->conn < lc2->conn ) ? -1 : ( ( lc1->conn > lc2-> conn ) ? 1 : 0 ) );
159 * returns -1 in case a duplicate struct ldapconn has been inserted;
168 struct ldapconn *lc1 = (struct ldapconn *)c1;
169 struct ldapconn *lc2 = (struct ldapconn *)c2;
171 return( ( lc1->conn == lc2->conn ) ? -1 : 0 );
174 #if PRINT_CONNTREE > 0
175 static void ravl_print( Avlnode *root, int depth )
182 ravl_print( root->avl_right, depth+1 );
184 for ( i = 0; i < depth; i++ )
187 printf( "c(%ld) %d\n", ((struct ldapconn *) root->avl_data)->conn->c_connid, root->avl_bf );
189 ravl_print( root->avl_left, depth+1 );
192 static void myprint( Avlnode *root )
194 printf( "********\n" );
197 printf( "\tNULL\n" );
200 ravl_print( root, 0 );
202 printf( "********\n" );
204 #endif /* PRINT_CONNTREE */
207 ldap_back_getconn(struct ldapinfo *li, Connection *conn, Operation *op)
209 struct ldapconn *lc, lc_curr;
212 /* Searches for a ldapconn in the avl tree */
214 ldap_pvt_thread_mutex_lock( &li->conn_mutex );
215 lc = (struct ldapconn *)avl_find( li->conntree,
216 (caddr_t)&lc_curr, ldap_back_conn_cmp );
217 ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
219 /* Looks like we didn't get a bind. Open a new session... */
221 int vers = conn->c_protocol;
222 int err = ldap_initialize(&ld, li->url);
224 if (err != LDAP_SUCCESS) {
225 err = ldap_back_map_result(err);
226 send_ldap_result( conn, op, err,
227 NULL, "ldap_init failed", NULL, NULL );
230 /* Set LDAP version. This will always succeed: If the client
231 * bound with a particular version, then so can we.
233 ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, &vers);
235 lc = (struct ldapconn *)ch_malloc(sizeof(struct ldapconn));
240 lc->cred.bv_val = NULL;
242 #ifdef ENABLE_REWRITE
244 * Sets a cookie for the rewrite session
246 ( void )rewrite_session_init( li->rwinfo, conn );
247 #endif /* ENABLE_REWRITE */
249 if ( lc->conn->c_dn.bv_len != 0 ) {
252 * Rewrite the bind dn if needed
254 #ifdef ENABLE_REWRITE
255 lc->bound_dn.bv_val = NULL;
256 lc->bound_dn.bv_len = 0;
257 switch ( rewrite_session( li->rwinfo, "bindDn",
258 lc->conn->c_dn.bv_val, conn,
259 &lc->bound_dn.bv_val ) ) {
260 case REWRITE_REGEXEC_OK:
261 if ( lc->bound_dn.bv_val == NULL ) {
262 ber_dupbv( &lc->bound_dn, &lc->conn->c_dn );
265 LDAP_LOG( BACK_LDAP, DETAIL1,
266 "[rw] bindDn: \"%s\" ->"
268 lc->conn->c_dn.bv_val,
269 lc->bound_dn.bv_val, "" );
270 #else /* !NEW_LOGGING */
271 Debug( LDAP_DEBUG_ARGS,
272 "rw> bindDn: \"%s\" ->"
274 lc->conn->c_dn.bv_val,
275 lc->bound_dn.bv_val, "" );
276 #endif /* !NEW_LOGGING */
279 case REWRITE_REGEXEC_UNWILLING:
280 send_ldap_result( conn, op,
281 LDAP_UNWILLING_TO_PERFORM,
282 NULL, "Unwilling to perform",
286 case REWRITE_REGEXEC_ERR:
287 send_ldap_result( conn, op,
289 NULL, "Operations error",
293 #else /* !ENABLE_REWRITE */
295 ldap_back_dn_massage( li, &lc->conn->c_dn, &bv, 0, 1 );
296 if ( bv.bv_val == lc->conn->c_dn.bv_val )
297 ber_dupbv( &lc->bound_dn, &bv );
300 #endif /* !ENABLE_REWRITE */
302 lc->bound_dn.bv_val = NULL;
303 lc->bound_dn.bv_len = 0;
307 /* Inserts the newly created ldapconn in the avl tree */
308 ldap_pvt_thread_mutex_lock( &li->conn_mutex );
309 err = avl_insert( &li->conntree, (caddr_t)lc,
310 ldap_back_conn_cmp, ldap_back_conn_dup );
312 #if PRINT_CONNTREE > 0
313 myprint( li->conntree );
314 #endif /* PRINT_CONNTREE */
316 ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
319 LDAP_LOG( BACK_LDAP, INFO,
320 "ldap_back_getconn: conn %ld inserted\n", lc->conn->c_connid, 0, 0);
321 #else /* !NEW_LOGGING */
322 Debug( LDAP_DEBUG_TRACE,
323 "=>ldap_back_getconn: conn %ld inserted\n%s%s",
324 lc->conn->c_connid, "", "" );
325 #endif /* !NEW_LOGGING */
327 /* Err could be -1 in case a duplicate ldapconn is inserted */
329 send_ldap_result( conn, op, LDAP_OTHER,
330 NULL, "internal server error", NULL, NULL );
331 /* better destroy the ldapconn struct? */
336 LDAP_LOG( BACK_LDAP, INFO,
337 "ldap_back_getconn: conn %ld inserted\n",
338 lc->conn->c_connid, 0, 0 );
339 #else /* !NEW_LOGGING */
340 Debug( LDAP_DEBUG_TRACE,
341 "=>ldap_back_getconn: conn %ld fetched%s%s\n",
342 lc->conn->c_connid, "", "" );
343 #endif /* !NEW_LOGGING */
352 * Note: as the check for the value of lc->bound was already here, I removed
353 * it from all the callers, and I made the function return the flag, so
354 * it can be used to simplify the check.
357 ldap_back_dobind( struct ldapconn *lc, Operation *op )
364 ldap_set_option( lc->ld, LDAP_OPT_SERVER_CONTROLS,
368 if ( ldap_bind_s( lc->ld, lc->bound_dn.bv_val, lc->cred.bv_val,
369 LDAP_AUTH_SIMPLE ) != LDAP_SUCCESS ) {
370 ldap_back_op_result( lc, op );
373 return( lc->bound = 1 );
379 * This is a callback used for chasing referrals using the same
380 * credentials as the original user on this session.
383 ldap_back_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
384 ber_int_t msgid, void *params )
386 struct ldapconn *lc = params;
388 return ldap_bind_s( ld, lc->bound_dn.bv_val, lc->cred.bv_val, LDAP_AUTH_SIMPLE );
391 /* Map API errors to protocol errors... */
394 ldap_back_map_result(int err)
398 case LDAP_SERVER_DOWN:
399 return LDAP_UNAVAILABLE;
400 case LDAP_LOCAL_ERROR:
402 case LDAP_ENCODING_ERROR:
403 case LDAP_DECODING_ERROR:
404 return LDAP_PROTOCOL_ERROR;
406 return LDAP_UNAVAILABLE;
407 case LDAP_AUTH_UNKNOWN:
408 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
409 case LDAP_FILTER_ERROR:
411 case LDAP_USER_CANCELLED:
413 case LDAP_PARAM_ERROR:
414 return LDAP_PROTOCOL_ERROR;
417 case LDAP_CONNECT_ERROR:
418 return LDAP_UNAVAILABLE;
419 case LDAP_NOT_SUPPORTED:
420 return LDAP_UNWILLING_TO_PERFORM;
421 case LDAP_CONTROL_NOT_FOUND:
422 return LDAP_PROTOCOL_ERROR;
423 case LDAP_NO_RESULTS_RETURNED:
424 return LDAP_NO_SUCH_OBJECT;
425 case LDAP_MORE_RESULTS_TO_RETURN:
427 case LDAP_CLIENT_LOOP:
428 case LDAP_REFERRAL_LIMIT_EXCEEDED:
429 return LDAP_LOOP_DETECT;
431 if LDAP_API_ERROR(err)
439 ldap_back_op_result(struct ldapconn *lc, Operation *op)
441 int err = LDAP_SUCCESS;
445 ldap_get_option(lc->ld, LDAP_OPT_ERROR_NUMBER, &err);
446 ldap_get_option(lc->ld, LDAP_OPT_ERROR_STRING, &msg);
447 ldap_get_option(lc->ld, LDAP_OPT_MATCHED_DN, &match);
448 err = ldap_back_map_result(err);
450 #ifdef ENABLE_REWRITE
453 * FIXME: need rewrite info for match; mmmh ...
455 send_ldap_result( lc->conn, op, err, match, msg, NULL, NULL );
456 /* better test the pointers before freeing? */
461 #else /* !ENABLE_REWRITE */
463 send_ldap_result( lc->conn, op, err, match, msg, NULL, NULL );
464 /* better test the pointers before freeing? */
469 #endif /* !ENABLE_REWRITE */
471 if ( msg ) free( msg );
472 return( (err==LDAP_SUCCESS) ? 0 : -1 );