git.sur5r.net Git - openldap/blob - libraries/libldap/result.c

   1 /* result.c - wait for an ldap result */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2006 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1990 Regents of the University of Michigan.
  17  * All rights reserved.
  18  */
  19 /* This notice applies to changes, created by or for Novell, Inc.,
  20  * to preexisting works for which notices appear elsewhere in this file.
  21  *
  22  * Copyright (C) 1999, 2000 Novell, Inc. All Rights Reserved.
  23  *
  24  * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND TREATIES.
  25  * USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT TO VERSION
  26  * 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS AVAILABLE AT
  27  * HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE" IN THE
  28  * TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION OF THIS
  29  * WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP PUBLIC
  30  * LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT THE
  31  * PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
  32  *---
  33  * Modification to OpenLDAP source by Novell, Inc.
  34  * April 2000 sfs Add code to process V3 referrals and search results
  35  *---
  36  * Note: A verbatim copy of version 2.0.1 of the OpenLDAP Public License
  37  * can be found in the file "build/LICENSE-2.0.1" in this distribution
  38  * of OpenLDAP Software.
  39  */
  40 /* Portions Copyright (C) The Internet Society (1997)
  41  * ASN.1 fragments are from RFC 2251; see RFC for full legal notices.
  42  */
  43
  44 /*
  45  * LDAPv3 (RFC2251)
  46  *      LDAPResult ::= SEQUENCE {
  47  *              resultCode              ENUMERATED { ... },
  48  *              matchedDN               LDAPDN,
  49  *              errorMessage    LDAPString,
  50  *              referral                Referral OPTIONAL
  51  *      }
  52  *      Referral ::= SEQUENCE OF LDAPURL        (one or more)
  53  *      LDAPURL ::= LDAPString                          (limited to URL chars)
  54  */
  55
  56 #include "portable.h"
  57
  58 #include <stdio.h>
  59
  60 #include <ac/stdlib.h>
  61
  62 #include <ac/errno.h>
  63 #include <ac/socket.h>
  64 #include <ac/string.h>
  65 #include <ac/time.h>
  66 #include <ac/unistd.h>
  67
  68 #include "ldap-int.h"
  69 #include "ldap_log.h"
  70
  71 static int ldap_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
  72 static int ldap_mark_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
  73 static int wait4msg LDAP_P(( LDAP *ld, ber_int_t msgid, int all, struct timeval *timeout,
  74         LDAPMessage **result ));
  75 static ber_tag_t try_read1msg LDAP_P(( LDAP *ld, ber_int_t msgid,
  76         int all, LDAPConn **lc, LDAPMessage **result ));
  77 static ber_tag_t build_result_ber LDAP_P(( LDAP *ld, BerElement **bp, LDAPRequest *lr ));
  78 static void merge_error_info LDAP_P(( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr ));
  79 static LDAPMessage * chkResponseList LDAP_P(( LDAP *ld, int msgid, int all));
  80
  81 #define LDAP_MSG_X_KEEP_LOOKING         (-2)
  82
  83
  84 /*
  85  * ldap_result - wait for an ldap result response to a message from the
  86  * ldap server.  If msgid is LDAP_RES_ANY (-1), any message will be
  87  * accepted.  If msgid is LDAP_RES_UNSOLICITED (0), any unsolicited
  88  * message is accepted.  Otherwise ldap_result will wait for a response
  89  * with msgid.  If all is LDAP_MSG_ONE (0) the first message with id
  90  * msgid will be accepted, otherwise, ldap_result will wait for all
  91  * responses with id msgid and then return a pointer to the entire list
  92  * of messages.  In general, this is only useful for search responses,
  93  * which can be of three message types (zero or more entries, zero or
  94  * search references, followed by an ldap result).  An extension to
  95  * LDAPv3 allows partial extended responses to be returned in response
  96  * to any request.  The type of the first message received is returned.
  97  * When waiting, any messages that have been abandoned are discarded.
  98  *
  99  * Example:
 100  *      ldap_result( s, msgid, all, timeout, result )
 101  */
 102 int
 103 ldap_result(
 104         LDAP *ld,
 105         int msgid,
 106         int all,
 107         struct timeval *timeout,
 108         LDAPMessage **result )
 109 {
 110         LDAPMessage     *lm;
 111         int     rc;
 112
 113         assert( ld != NULL );
 114         assert( result != NULL );
 115
 116         Debug( LDAP_DEBUG_TRACE, "ldap_result ld %p msgid %d\n", (void *)ld, msgid, 0 );
 117
 118 #ifdef LDAP_R_COMPILE
 119         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
 120 #endif
 121         lm = chkResponseList(ld, msgid, all);
 122
 123         if ( lm == NULL ) {
 124                 rc = wait4msg( ld, msgid, all, timeout, result );
 125         } else {
 126                 *result = lm;
 127                 ld->ld_errno = LDAP_SUCCESS;
 128                 rc = lm->lm_msgtype;
 129         }
 130 #ifdef LDAP_R_COMPILE
 131         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
 132 #endif
 133         return( rc );
 134 }
 135
 136 static LDAPMessage *
 137 chkResponseList(
 138         LDAP *ld,
 139         int msgid,
 140         int all)
 141 {
 142         LDAPMessage     *lm, **lastlm, *nextlm;
 143
 144         /*
 145          * Look through the list of responses we have received on
 146          * this association and see if the response we're interested in
 147          * is there.  If it is, return it.  If not, call wait4msg() to
 148          * wait until it arrives or timeout occurs.
 149          */
 150
 151 #ifdef LDAP_R_COMPILE
 152         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 153 #endif
 154
 155         Debug( LDAP_DEBUG_TRACE,
 156                 "ldap_chkResponseList ld %p msgid %d all %d\n",
 157                 (void *)ld, msgid, all );
 158
 159         lastlm = &ld->ld_responses;
 160         for ( lm = ld->ld_responses; lm != NULL; lm = nextlm ) {
 161                 nextlm = lm->lm_next;
 162
 163                 if ( ldap_abandoned( ld, lm->lm_msgid ) ) {
 164                         Debug( LDAP_DEBUG_TRACE,
 165                                 "ldap_chkResponseList msg abandoned, msgid %d\n",
 166                             msgid, 0, 0 );
 167                         ldap_mark_abandoned( ld, lm->lm_msgid );
 168
 169                         /* Remove this entry from list */
 170                         *lastlm = nextlm;
 171
 172                         ldap_msgfree( lm );
 173
 174                         continue;
 175                 }
 176
 177                 if ( msgid == LDAP_RES_ANY || lm->lm_msgid == msgid ) {
 178                         LDAPMessage     *tmp;
 179
 180                         if ( all == LDAP_MSG_ONE || all == LDAP_MSG_RECEIVED ||
 181                                 msgid == LDAP_RES_UNSOLICITED ) {
 182                                 break;
 183                         }
 184
 185                         tmp = lm->lm_chain_tail;
 186                         if ((tmp->lm_msgtype == LDAP_RES_SEARCH_ENTRY) ||
 187                                 (tmp->lm_msgtype == LDAP_RES_SEARCH_REFERENCE) ||
 188                                 (tmp->lm_msgtype == LDAP_RES_INTERMEDIATE)) {
 189                                 tmp = NULL;
 190                         }
 191
 192                         if ( tmp == NULL ) {
 193                                 lm = NULL;
 194                         }
 195
 196                         break;
 197                 }
 198                 lastlm = &lm->lm_next;
 199         }
 200
 201     if ( lm != NULL ) {
 202                 /* Found an entry, remove it from the list */
 203             if ( all == LDAP_MSG_ONE && lm->lm_chain != NULL ) {
 204                         *lastlm = lm->lm_chain;
 205                         lm->lm_chain->lm_next = lm->lm_next;
 206                         lm->lm_chain->lm_chain_tail = ( lm->lm_chain_tail != lm ) ? lm->lm_chain_tail : lm->lm_chain;
 207                         lm->lm_chain = NULL;
 208                         lm->lm_chain_tail = NULL;
 209             } else {
 210                         *lastlm = lm->lm_next;
 211                 }
 212             lm->lm_next = NULL;
 213     }
 214
 215 #ifdef LDAP_DEBUG
 216         if( lm == NULL) {
 217                 Debug( LDAP_DEBUG_TRACE,
 218                         "ldap_chkResponseList returns ld %p NULL\n", (void *)ld, 0, 0);
 219         } else {
 220                 Debug( LDAP_DEBUG_TRACE,
 221                         "ldap_chkResponseList returns ld %p msgid %d, type 0x%02lu\n",
 222                         (void *)ld, lm->lm_msgid, (unsigned long) lm->lm_msgtype);
 223         }
 224 #endif
 225     return lm;
 226 }
 227
 228 static int
 229 wait4msg(
 230         LDAP *ld,
 231         ber_int_t msgid,
 232         int all,
 233         struct timeval *timeout,
 234         LDAPMessage **result )
 235 {
 236         int             rc;
 237         struct timeval  tv = { 0 },
 238                         tv0 = { 0 },
 239                         *tvp;
 240         time_t          start_time = 0;
 241         time_t          tmp_time;
 242         LDAPConn        *lc, *nextlc;
 243
 244         assert( ld != NULL );
 245         assert( result != NULL );
 246
 247 #ifdef LDAP_R_COMPILE
 248         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 249 #endif
 250
 251 #ifdef LDAP_DEBUG
 252         if ( timeout == NULL ) {
 253                 Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (infinite timeout)\n",
 254                         (void *)ld, msgid, 0 );
 255         } else {
 256                 Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (timeout %ld usec)\n",
 257                         (void *)ld, msgid, (long)timeout->tv_sec * 1000000 + timeout->tv_usec );
 258         }
 259 #endif /* LDAP_DEBUG */
 260
 261         if ( timeout == NULL ) {
 262                 tvp = NULL;
 263         } else {
 264                 tv0 = *timeout;
 265                 tv = *timeout;
 266                 tvp = &tv;
 267                 start_time = time( NULL );
 268         }
 269
 270         rc = LDAP_MSG_X_KEEP_LOOKING;
 271         while ( rc == LDAP_MSG_X_KEEP_LOOKING ) {
 272 #ifdef LDAP_DEBUG
 273                 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
 274                         Debug( LDAP_DEBUG_TRACE, "wait4msg continue ld %p msgid %d all %d\n",
 275                                 (void *)ld, msgid, all );
 276                         ldap_dump_connection( ld, ld->ld_conns, 1 );
 277                         ldap_dump_requests_and_responses( ld );
 278                 }
 279 #endif /* LDAP_DEBUG */
 280
 281                 if ( ( *result = chkResponseList( ld, msgid, all ) ) != NULL ) {
 282                         rc = (*result)->lm_msgtype;
 283
 284                 } else {
 285                         int lc_ready = 0;
 286
 287 #ifdef LDAP_R_COMPILE
 288                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 289 #endif
 290                         for ( lc = ld->ld_conns; lc != NULL; lc = nextlc ) {
 291                                 nextlc = lc->lconn_next;
 292                                 if ( ber_sockbuf_ctrl( lc->lconn_sb,
 293                                                 LBER_SB_OPT_DATA_READY, NULL ) )
 294                                 {
 295 #ifdef LDAP_R_COMPILE
 296                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 297 #endif
 298                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 299 #ifdef LDAP_R_COMPILE
 300                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 301 #endif
 302                                         lc_ready = 1;
 303                                         break;
 304                                 }
 305                         }
 306 #ifdef LDAP_R_COMPILE
 307                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 308 #endif
 309
 310                         if ( !lc_ready ) {
 311                                 rc = ldap_int_select( ld, tvp );
 312 #ifdef LDAP_DEBUG
 313                                 if ( rc == -1 ) {
 314                                         Debug( LDAP_DEBUG_TRACE,
 315                                                 "ldap_int_select returned -1: errno %d\n",
 316                                                 errno, 0, 0 );
 317                                 }
 318 #endif
 319
 320                                 if ( rc == 0 || ( rc == -1 && (
 321                                         !LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART)
 322                                                 || errno != EINTR ) ) )
 323                                 {
 324                                         ld->ld_errno = (rc == -1 ? LDAP_SERVER_DOWN :
 325                                                 LDAP_TIMEOUT);
 326                                         return( rc );
 327                                 }
 328
 329                                 if ( rc == -1 ) {
 330                                         rc = LDAP_MSG_X_KEEP_LOOKING;   /* select interrupted: loop */
 331                                 } else {
 332                                         rc = LDAP_MSG_X_KEEP_LOOKING;
 333 #ifdef LDAP_R_COMPILE
 334                                         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 335 #endif
 336                                         if ( ld->ld_requests &&
 337                                                 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
 338                                                 ldap_is_write_ready( ld,
 339                                                         ld->ld_requests->lr_conn->lconn_sb ) )
 340                                         {
 341                                                 ldap_int_flush_request( ld, ld->ld_requests );
 342                                         }
 343 #ifdef LDAP_R_COMPILE
 344                                         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 345                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 346 #endif
 347                                         for ( lc = ld->ld_conns; rc == LDAP_MSG_X_KEEP_LOOKING && lc != NULL;
 348                                                 lc = nextlc )
 349                                         {
 350                                                 nextlc = lc->lconn_next;
 351                                                 if ( lc->lconn_status == LDAP_CONNST_CONNECTED &&
 352                                                         ldap_is_read_ready( ld, lc->lconn_sb ) )
 353                                                 {
 354 #ifdef LDAP_R_COMPILE
 355                                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 356 #endif
 357                                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 358                                                                 if ( lc == NULL ) lc = nextlc;
 359 #ifdef LDAP_R_COMPILE
 360                                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 361 #endif
 362                                                 }
 363                                         }
 364 #ifdef LDAP_R_COMPILE
 365                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 366 #endif
 367                                 }
 368                         }
 369                 }
 370
 371                 if ( rc == LDAP_MSG_X_KEEP_LOOKING && tvp != NULL ) {
 372                         tmp_time = time( NULL );
 373                         tv0.tv_sec -= ( tmp_time - start_time );
 374                         if ( tv0.tv_sec <= 0 ) {
 375                                 rc = 0; /* timed out */
 376                                 ld->ld_errno = LDAP_TIMEOUT;
 377                                 break;
 378                         }
 379                         tv.tv_sec = tv0.tv_sec;
 380
 381                         Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p %ld secs to go\n",
 382                                 (void *)ld, (long) tv.tv_sec, 0 );
 383                         start_time = tmp_time;
 384                 }
 385         }
 386
 387         return( rc );
 388 }
 389
 390
 391 static ber_tag_t
 392 try_read1msg(
 393         LDAP *ld,
 394         ber_int_t msgid,
 395         int all,
 396         LDAPConn **lcp,
 397         LDAPMessage **result )
 398 {
 399         BerElement      *ber;
 400         LDAPMessage     *newmsg, *l, *prev;
 401         ber_int_t       id;
 402         ber_tag_t       tag;
 403         ber_len_t       len;
 404         int             foundit = 0;
 405         LDAPRequest     *lr, *tmplr;
 406         LDAPConn        *lc;
 407         BerElement      tmpber;
 408         int             rc, refer_cnt, hadref, simple_request;
 409         ber_int_t       lderr;
 410
 411 #ifdef LDAP_CONNECTIONLESS
 412         LDAPMessage     *tmp = NULL, *chain_head = NULL;
 413         int             moremsgs = 0, isv2 = 0;
 414 #endif
 415
 416         /*
 417          * v3ref = flag for V3 referral / search reference
 418          * 0 = not a ref, 1 = sucessfully chased ref, -1 = pass ref to application
 419          */
 420         enum {
 421                 V3REF_NOREF     = 0,
 422                 V3REF_SUCCESS   = 1,
 423                 V3REF_TOAPP     = -1
 424         }       v3ref;
 425
 426         assert( ld != NULL );
 427         assert( lcp != NULL );
 428         assert( *lcp != NULL );
 429
 430 #ifdef LDAP_R_COMPILE
 431         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 432 #endif
 433
 434         Debug( LDAP_DEBUG_TRACE, "read1msg: ld %p msgid %d all %d\n",
 435                 (void *)ld, msgid, all );
 436
 437         lc = *lcp;
 438
 439 retry:
 440         if ( lc->lconn_ber == NULL ) {
 441                 lc->lconn_ber = ldap_alloc_ber_with_options( ld );
 442
 443                 if( lc->lconn_ber == NULL ) {
 444                         return -1;
 445                 }
 446         }
 447
 448         ber = lc->lconn_ber;
 449         assert( LBER_VALID (ber) );
 450
 451         /* get the next message */
 452         errno = 0;
 453 #ifdef LDAP_CONNECTIONLESS
 454         if ( LDAP_IS_UDP(ld) ) {
 455                 struct sockaddr from;
 456                 ber_int_sb_read( lc->lconn_sb, &from, sizeof(struct sockaddr) );
 457                 if (ld->ld_options.ldo_version == LDAP_VERSION2) isv2 = 1;
 458         }
 459 nextresp3:
 460 #endif
 461         tag = ber_get_next( lc->lconn_sb, &len, ber );
 462         switch ( tag ) {
 463         case LDAP_TAG_MESSAGE:
 464                 /*
 465                  * We read a complete message.
 466                  * The connection should no longer need this ber.
 467                  */
 468                 lc->lconn_ber = NULL;
 469                 break;
 470
 471         case LBER_DEFAULT:
 472 #ifdef LDAP_DEBUG
 473                 Debug( LDAP_DEBUG_CONNS,
 474                         "ber_get_next failed.\n", 0, 0, 0 );
 475 #endif
 476 #ifdef EWOULDBLOCK
 477                 if ( errno == EWOULDBLOCK ) return LDAP_MSG_X_KEEP_LOOKING;
 478 #endif
 479 #ifdef EAGAIN
 480                 if ( errno == EAGAIN ) return LDAP_MSG_X_KEEP_LOOKING;
 481 #endif
 482                 ld->ld_errno = LDAP_SERVER_DOWN;
 483                 return -1;
 484
 485         default:
 486                 ld->ld_errno = LDAP_LOCAL_ERROR;
 487                 return -1;
 488         }
 489
 490         /* message id */
 491         if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
 492                 ber_free( ber, 1 );
 493                 ld->ld_errno = LDAP_DECODING_ERROR;
 494                 return( -1 );
 495         }
 496
 497         /* if it's been abandoned, toss it */
 498         if ( ldap_abandoned( ld, id ) ) {
 499                 Debug( LDAP_DEBUG_ANY, "abandoned ld %p msgid %ld\n",
 500                         (void *)ld, (long) id, 0);
 501 retry_ber:
 502                 ber_free( ber, 1 );
 503                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 504                         goto retry;
 505                 }
 506                 return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
 507         }
 508
 509         lr = ldap_find_request_by_msgid( ld, id );
 510         if ( lr == NULL ) {
 511                 Debug( LDAP_DEBUG_ANY,
 512                         "no request for response on ld %p msgid %ld (tossing)\n",
 513                         (void *)ld, (long)id, 0 );
 514                 goto retry_ber;
 515         }
 516 #ifdef LDAP_CONNECTIONLESS
 517         if (LDAP_IS_UDP(ld) && isv2) {
 518                 ber_scanf(ber, "x{");
 519         }
 520 nextresp2:
 521 #endif
 522         /* the message type */
 523         if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
 524                 ld->ld_errno = LDAP_DECODING_ERROR;
 525                 ber_free( ber, 1 );
 526                 return( -1 );
 527         }
 528
 529         Debug( LDAP_DEBUG_TRACE,
 530                 "read1msg: ld %p msgid %ld message type %s\n",
 531                 (void *)ld, (long) lr->lr_msgid, ldap_int_msgtype2str( tag ));
 532
 533         id = lr->lr_origid;
 534         refer_cnt = 0;
 535         hadref = simple_request = 0;
 536         rc = LDAP_MSG_X_KEEP_LOOKING;   /* default is to keep looking (no response found) */
 537         lr->lr_res_msgtype = tag;
 538
 539         /*
 540          * This code figures out if we are going to chase a
 541          * referral / search reference, or pass it back to the application
 542          */
 543         v3ref = V3REF_NOREF;    /* Assume not a V3 search reference/referral */
 544         if( (tag != LDAP_RES_SEARCH_ENTRY) && (ld->ld_version > LDAP_VERSION2) ) {
 545                 BerElement      tmpber = *ber;  /* struct copy */
 546                 char **refs = NULL;
 547
 548                 if( tag == LDAP_RES_SEARCH_REFERENCE ) {
 549                         /* This is a V3 search reference */
 550                         /* Assume we do not chase the reference,
 551                          * but pass it to application */
 552                         v3ref = V3REF_TOAPP;
 553                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
 554                                         (lr->lr_parent != NULL) )
 555                         {
 556                                 /* Get the referral list */
 557                                 if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
 558                                         rc = LDAP_DECODING_ERROR;
 559                                 } else {
 560                                         /* Note: refs array is freed by ldap_chase_v3referrals */
 561                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 562                                             1, &lr->lr_res_error, &hadref );
 563                                         if ( refer_cnt > 0 ) {
 564                                                 /* sucessfully chased reference */
 565                                                 /* If haven't got end search, set chasing referrals */
 566                                                 if ( lr->lr_status != LDAP_REQST_COMPLETED ) {
 567                                                         lr->lr_status = LDAP_REQST_CHASINGREFS;
 568                                                         Debug( LDAP_DEBUG_TRACE,
 569                                                                 "read1msg:  search ref chased, "
 570                                                                 "mark request chasing refs, "
 571                                                                 "id = %d\n",
 572                                                                 lr->lr_msgid, 0, 0);
 573                                                 }
 574
 575                                                 /* We sucessfully chased the reference */
 576                                                 v3ref = V3REF_SUCCESS;
 577                                         }
 578                                 }
 579                         }
 580                 } else {
 581                         /* Check for V3 referral */
 582                         ber_len_t       len;
 583                         char            *lr_res_error = NULL;
 584
 585                         if ( ber_scanf( &tmpber, "{eAA",/*}*/ &lderr,
 586                                     &lr->lr_res_matched, &lr_res_error )
 587                                     != LBER_ERROR )
 588                         {
 589                                 if ( lr_res_error != NULL ) {
 590                                         {
 591                                                 if ( lr->lr_res_error != NULL ) {
 592                                                         (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 593                                                         LDAP_FREE( (char *)lr_res_error );
 594
 595                                                 } else {
 596                                                         lr->lr_res_error = lr_res_error;
 597                                                 }
 598                                         }
 599                                         lr_res_error = NULL;
 600                                 }
 601
 602                                 /* Check if V3 referral */
 603                                 if ( ber_peek_tag( &tmpber, &len ) == LDAP_TAG_REFERRAL ) {
 604                                         /* We have a V3 referral, assume we cannot chase it */
 605                                         v3ref = V3REF_TOAPP;
 606                                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS)
 607                                                          || (lr->lr_parent != NULL) )
 608                                         {
 609                                                 /* Assume referral not chased and return it to app */
 610                                                 v3ref = V3REF_TOAPP;
 611
 612                                                 /* Get the referral list */
 613                                                 if( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
 614                                                         rc = LDAP_DECODING_ERROR;
 615                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 616                                                         Debug( LDAP_DEBUG_TRACE,
 617                                                                 "read1msg: referral decode error, mark request completed, ld %p msgid %d\n",
 618                                                                 (void *)ld, lr->lr_msgid, 0);
 619                                                 } else {
 620                                                         /* Chase the referral
 621                                                          * Note: refs arrary is freed by ldap_chase_v3referrals
 622                                                          */
 623                                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 624                                                                 0, &lr->lr_res_error, &hadref );
 625                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 626                                                         Debug( LDAP_DEBUG_TRACE,
 627                                                                 "read1msg: referral chased, mark request completed, ld %p msgid %d\n",
 628                                                                 (void *)ld, lr->lr_msgid, 0);
 629                                                         if( refer_cnt > 0) {
 630                                                                 /* Referral successfully chased */
 631                                                                 v3ref = V3REF_SUCCESS;
 632                                                         }
 633                                                 }
 634                                         }
 635                                 }
 636
 637                                 if( lr->lr_res_matched != NULL ) {
 638                                         LDAP_FREE( lr->lr_res_matched );
 639                                         lr->lr_res_matched = NULL;
 640                                 }
 641                                 if( lr->lr_res_error != NULL ) {
 642                                         LDAP_FREE( lr->lr_res_error );
 643                                         lr->lr_res_error = NULL;
 644                                 }
 645                         }
 646                 }
 647         }
 648
 649         /* All results that just return a status, i.e. don't return data
 650          * go through the following code.  This code also chases V2 referrals
 651          * and checks if all referrals have been chased.
 652          */
 653         if ( (tag != LDAP_RES_SEARCH_ENTRY) && (v3ref != V3REF_TOAPP) &&
 654                 (tag != LDAP_RES_INTERMEDIATE ))
 655         {
 656                 /* For a v3 search referral/reference, only come here if already chased it */
 657                 if ( ld->ld_version >= LDAP_VERSION2 &&
 658                         ( lr->lr_parent != NULL ||
 659                         LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ) )
 660                 {
 661                         char            *lr_res_error = NULL;
 662
 663                         tmpber = *ber;  /* struct copy */
 664                         if ( v3ref == V3REF_SUCCESS ) {
 665                                 /* V3 search reference or V3 referral
 666                                  * sucessfully chased. If this message
 667                                  * is a search result, then it has no more
 668                                  * outstanding referrals.
 669                                  */
 670                                 if ( tag == LDAP_RES_SEARCH_RESULT )
 671                                         refer_cnt = 0;
 672                         } else if ( ber_scanf( &tmpber, "{eAA}", &lderr,
 673                                 &lr->lr_res_matched, &lr_res_error )
 674                                 != LBER_ERROR )
 675                         {
 676                                 if ( lr_res_error != NULL ) {
 677                                         if ( lr->lr_res_error != NULL ) {
 678                                                 (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 679                                                 LDAP_FREE( (char *)lr_res_error );
 680                                         } else {
 681                                                 lr->lr_res_error = lr_res_error;
 682                                         }
 683                                         lr_res_error = NULL;
 684                                 }
 685
 686                                 switch ( lderr ) {
 687                                 case LDAP_SUCCESS:
 688                                 case LDAP_COMPARE_TRUE:
 689                                 case LDAP_COMPARE_FALSE:
 690                                         break;
 691
 692                                 default:
 693                                         if ( lr->lr_res_error == NULL
 694                                                 || lr->lr_res_error[ 0 ] == '\0' )
 695                                         {
 696                                                 break;
 697                                         }
 698
 699                                         /* referrals are in error string */
 700                                         refer_cnt = ldap_chase_referrals( ld, lr,
 701                                                 &lr->lr_res_error, -1, &hadref );
 702                                         lr->lr_status = LDAP_REQST_COMPLETED;
 703                                         Debug( LDAP_DEBUG_TRACE,
 704                                                 "read1msg:  V2 referral chased, "
 705                                                 "mark request completed, id = %d\n",
 706                                                 lr->lr_msgid, 0, 0 );
 707                                         break;
 708                                 }
 709
 710                                 /* save errno, message, and matched string */
 711                                 if ( !hadref || lr->lr_res_error == NULL ) {
 712                                         lr->lr_res_errno = ( lderr ==
 713                                         LDAP_PARTIAL_RESULTS ) ? LDAP_SUCCESS
 714                                         : lderr;
 715                                 } else if ( ld->ld_errno != LDAP_SUCCESS ) {
 716                                         lr->lr_res_errno = ld->ld_errno;
 717                                 } else {
 718                                         lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
 719                                 }
 720
 721                                 Debug( LDAP_DEBUG_TRACE, "new result:  "
 722                                         "res_errno: %d, "
 723                                         "res_error: <%s>, "
 724                                         "res_matched: <%s>\n",
 725                                         lr->lr_res_errno,
 726                                         lr->lr_res_error ? lr->lr_res_error : "",
 727                                         lr->lr_res_matched ? lr->lr_res_matched : "" );
 728                         }
 729
 730                         /* in any case, don't leave any lr_res_error 'round */
 731                         if ( lr_res_error ) {
 732                                 LDAP_FREE( lr_res_error );
 733                         }
 734                 }
 735
 736                 Debug( LDAP_DEBUG_TRACE,
 737                         "read1msg: ld %p %d new referrals\n",
 738                         (void *)ld, refer_cnt, 0 );
 739
 740                 if ( refer_cnt != 0 ) { /* chasing referrals */
 741                         ber_free( ber, 1 );
 742                         ber = NULL;
 743                         if ( refer_cnt < 0 ) {
 744                                 return( -1 );   /* fatal error */
 745                         }
 746                         lr->lr_res_errno = LDAP_SUCCESS; /* sucessfully chased referral */
 747                 } else {
 748                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
 749                                 /* request without any referrals */
 750                                 simple_request = ( hadref ? 0 : 1 );
 751                         } else {
 752                                 /* request with referrals or child request */
 753                                 ber_free( ber, 1 );
 754                                 ber = NULL;
 755                         }
 756
 757                         lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
 758                         Debug( LDAP_DEBUG_TRACE,
 759                                 "read1msg:  mark request completed, ld %p msgid %d\n",
 760                                 (void *)ld, lr->lr_msgid, 0);
 761                         while ( lr->lr_parent != NULL ) {
 762                                 merge_error_info( ld, lr->lr_parent, lr );
 763
 764                                 lr = lr->lr_parent;
 765                                 if ( --lr->lr_outrefcnt > 0 ) {
 766                                         break;  /* not completely done yet */
 767                                 }
 768                         }
 769
 770                         /* Check if all requests are finished, lr is now parent */
 771                         tmplr = lr;
 772                         if ( tmplr->lr_status == LDAP_REQST_COMPLETED ) {
 773                                 for ( tmplr=lr->lr_child;
 774                                         tmplr != NULL;
 775                                         tmplr=tmplr->lr_refnext)
 776                                 {
 777                                         if ( tmplr->lr_status != LDAP_REQST_COMPLETED ) break;
 778                                 }
 779                         }
 780
 781                         /* This is the parent request if the request has referrals */
 782                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL &&
 783                                 tmplr == NULL )
 784                         {
 785                                 id = lr->lr_msgid;
 786                                 tag = lr->lr_res_msgtype;
 787                                 Debug( LDAP_DEBUG_ANY, "request done: ld %p msgid %ld\n",
 788                                         (void *)ld, (long) id, 0 );
 789 Debug( LDAP_DEBUG_TRACE,
 790 "res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 791 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 792 lr->lr_res_matched ? lr->lr_res_matched : "" );
 793                                 if ( !simple_request ) {
 794                                         ber_free( ber, 1 );
 795                                         ber = NULL;
 796                                         if ( build_result_ber( ld, &ber, lr )
 797                                             == LBER_ERROR )
 798                                         {
 799                                                 rc = -1; /* fatal error */
 800                                         }
 801                                 }
 802
 803 #ifdef LDAP_R_COMPILE
 804                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 805 #endif
 806                                 ldap_free_request( ld, lr );
 807 #ifdef LDAP_R_COMPILE
 808                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 809 #endif
 810                         }
 811
 812                         if ( lc != NULL ) {
 813 #ifdef LDAP_R_COMPILE
 814                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 815 #endif
 816                                 ldap_free_connection( ld, lc, 0, 1 );
 817 #ifdef LDAP_R_COMPILE
 818                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 819 #endif
 820                                 lc = *lcp = NULL;
 821                         }
 822                 }
 823         }
 824
 825         if ( ber == NULL ) {
 826                 return( rc );
 827         }
 828
 829         /* make a new ldap message */
 830         newmsg = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) );
 831         if ( newmsg == NULL ) {
 832                 ld->ld_errno = LDAP_NO_MEMORY;
 833                 return( -1 );
 834         }
 835         newmsg->lm_msgid = (int)id;
 836         newmsg->lm_msgtype = tag;
 837         newmsg->lm_ber = ber;
 838         newmsg->lm_chain_tail = newmsg;
 839
 840 #ifdef LDAP_CONNECTIONLESS
 841         /* CLDAP replies all fit in a single datagram. In LDAPv2 RFC1798
 842          * the responses are all a sequence wrapped in one message. In
 843          * LDAPv3 each response is in its own message. The datagram must
 844          * end with a SearchResult. We can't just parse each response in
 845          * separate calls to try_read1msg because the header info is only
 846          * present at the beginning of the datagram, not at the beginning
 847          * of each response. So parse all the responses at once and queue
 848          * them up, then pull off the first response to return to the
 849          * caller when all parsing is complete.
 850          */
 851         if ( LDAP_IS_UDP(ld) ) {
 852                 /* If not a result, look for more */
 853                 if ( tag != LDAP_RES_SEARCH_RESULT ) {
 854                         int ok = 0;
 855                         moremsgs = 1;
 856                         if (isv2) {
 857                                 /* LDAPv2: dup the current ber, skip past the current
 858                                  * response, and see if there are any more after it.
 859                                  */
 860                                 ber = ber_dup( ber );
 861                                 ber_scanf( ber, "x" );
 862                                 if (ber_peek_tag(ber, &len) != LBER_DEFAULT) {
 863                                         /* There's more - dup the ber buffer so they can all be
 864                                          * individually freed by ldap_msgfree.
 865                                          */
 866                                         struct berval bv;
 867                                         ber_get_option(ber, LBER_OPT_BER_REMAINING_BYTES, &len);
 868                                         bv.bv_val = LDAP_MALLOC(len);
 869                                         if (bv.bv_val) {
 870                                                 ok=1;
 871                                                 ber_read(ber, bv.bv_val, len);
 872                                                 bv.bv_len = len;
 873                                                 ber_init2(ber, &bv, ld->ld_lberoptions );
 874                                         }
 875                                 }
 876                         } else {
 877                                 /* LDAPv3: Just allocate a new ber. Since this is a buffered
 878                                  * datagram, if the sockbuf is readable we still have data
 879                                  * to parse.
 880                                  */
 881                                 ber = ldap_alloc_ber_with_options( ld );
 882                                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) ok = 1;
 883                         }
 884                         /* set up response chain */
 885                         if ( tmp == NULL ) {
 886                                 newmsg->lm_next = ld->ld_responses;
 887                                 ld->ld_responses = newmsg;
 888                                 chain_head = newmsg;
 889                         } else {
 890                                 tmp->lm_chain = newmsg;
 891                         }
 892                         chain_head->lm_chain_tail = newmsg;
 893                         tmp = newmsg;
 894                         /* "ok" means there's more to parse */
 895                         if (ok) {
 896                                 if (isv2) goto nextresp2;
 897                                 else goto nextresp3;
 898                         } else {
 899                                 /* got to end of datagram without a SearchResult. Free
 900                                  * our dup'd ber, but leave any buffer alone. For v2 case,
 901                                  * the previous response is still using this buffer. For v3,
 902                                  * the new ber has no buffer to free yet.
 903                                  */
 904                                 ber_free(ber, 0);
 905                                 return -1;
 906                         }
 907                 } else if ( moremsgs ) {
 908                 /* got search result, and we had multiple responses in 1 datagram.
 909                  * stick the result onto the end of the chain, and then pull the
 910                  * first response off the head of the chain.
 911                  */
 912                         tmp->lm_chain = newmsg;
 913                         chain_head->lm_chain_tail = newmsg;
 914                         *result = chkResponseList( ld, msgid, all );
 915                         ld->ld_errno = LDAP_SUCCESS;
 916                         return( (*result)->lm_msgtype );
 917                 }
 918         }
 919 #endif /* LDAP_CONNECTIONLESS */
 920
 921         /* is this the one we're looking for? */
 922         if ( msgid == LDAP_RES_ANY || id == msgid ) {
 923                 if ( all == LDAP_MSG_ONE
 924                     || (newmsg->lm_msgtype != LDAP_RES_SEARCH_RESULT
 925                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 926                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_REFERENCE) ) {
 927                         *result = newmsg;
 928                         ld->ld_errno = LDAP_SUCCESS;
 929                         return( tag );
 930                 } else if ( newmsg->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
 931                         foundit = 1;    /* return the chain later */
 932                 }
 933         }
 934
 935         /*
 936          * if not, we must add it to the list of responses.  if
 937          * the msgid is already there, it must be part of an existing
 938          * search response.
 939          */
 940
 941         prev = NULL;
 942         for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
 943                 if ( l->lm_msgid == newmsg->lm_msgid )
 944                         break;
 945                 prev = l;
 946         }
 947
 948         /* not part of an existing search response */
 949         if ( l == NULL ) {
 950                 if ( foundit ) {
 951                         *result = newmsg;
 952                         goto exit;
 953                 }
 954
 955                 newmsg->lm_next = ld->ld_responses;
 956                 ld->ld_responses = newmsg;
 957                 goto exit;
 958         }
 959
 960         Debug( LDAP_DEBUG_TRACE, "adding response ld %p msgid %ld type %ld:\n",
 961                 (void *)ld, (long) newmsg->lm_msgid, (long) newmsg->lm_msgtype );
 962
 963         /* part of a search response - add to end of list of entries */
 964         l->lm_chain_tail->lm_chain = newmsg;
 965         l->lm_chain_tail = newmsg;
 966
 967         /* return the whole chain if that's what we were looking for */
 968         if ( foundit ) {
 969                 if ( prev == NULL )
 970                         ld->ld_responses = l->lm_next;
 971                 else
 972                         prev->lm_next = l->lm_next;
 973                 *result = l;
 974         }
 975
 976 exit:
 977         if ( foundit ) {
 978                 ld->ld_errno = LDAP_SUCCESS;
 979                 return( tag );
 980         }
 981         if ( lc && ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 982                 goto retry;
 983         }
 984         return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
 985 }
 986
 987
 988 static ber_tag_t
 989 build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
 990 {
 991         ber_len_t       len;
 992         ber_tag_t       tag;
 993         ber_int_t       along;
 994         BerElement *ber;
 995
 996         *bp = NULL;
 997         ber = ldap_alloc_ber_with_options( ld );
 998
 999         if( ber == NULL ) {
1000                 ld->ld_errno = LDAP_NO_MEMORY;
1001                 return LBER_ERROR;
1002         }
1003
1004         if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
1005                 lr->lr_res_msgtype, lr->lr_res_errno,
1006                 lr->lr_res_matched ? lr->lr_res_matched : "",
1007                 lr->lr_res_error ? lr->lr_res_error : "" ) == -1 )
1008         {
1009                 ld->ld_errno = LDAP_ENCODING_ERROR;
1010                 ber_free(ber, 1);
1011                 return( LBER_ERROR );
1012         }
1013
1014         ber_reset( ber, 1 );
1015
1016         if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
1017                 ld->ld_errno = LDAP_DECODING_ERROR;
1018                 ber_free(ber, 1);
1019                 return( LBER_ERROR );
1020         }
1021
1022         if ( ber_get_enum( ber, &along ) == LBER_ERROR ) {
1023                 ld->ld_errno = LDAP_DECODING_ERROR;
1024                 ber_free(ber, 1);
1025                 return( LBER_ERROR );
1026         }
1027
1028         tag = ber_peek_tag( ber, &len );
1029
1030         if ( tag == LBER_ERROR ) {
1031                 ld->ld_errno = LDAP_DECODING_ERROR;
1032                 ber_free(ber, 1);
1033                 return( LBER_ERROR );
1034         }
1035
1036         *bp = ber;
1037         return tag;
1038 }
1039
1040
1041 static void
1042 merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
1043 {
1044 /*
1045  * Merge error information in "lr" with "parentr" error code and string.
1046  */
1047         if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
1048                 parentr->lr_res_errno = lr->lr_res_errno;
1049                 if ( lr->lr_res_error != NULL ) {
1050                         (void)ldap_append_referral( ld, &parentr->lr_res_error,
1051                             lr->lr_res_error );
1052                 }
1053         } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
1054                 parentr->lr_res_errno == LDAP_SUCCESS )
1055         {
1056                 parentr->lr_res_errno = lr->lr_res_errno;
1057                 if ( parentr->lr_res_error != NULL ) {
1058                         LDAP_FREE( parentr->lr_res_error );
1059                 }
1060                 parentr->lr_res_error = lr->lr_res_error;
1061                 lr->lr_res_error = NULL;
1062                 if ( LDAP_NAME_ERROR( lr->lr_res_errno ) ) {
1063                         if ( parentr->lr_res_matched != NULL ) {
1064                                 LDAP_FREE( parentr->lr_res_matched );
1065                         }
1066                         parentr->lr_res_matched = lr->lr_res_matched;
1067                         lr->lr_res_matched = NULL;
1068                 }
1069         }
1070
1071         Debug( LDAP_DEBUG_TRACE, "merged parent (id %d) error info:  ",
1072             parentr->lr_msgid, 0, 0 );
1073         Debug( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
1074             parentr->lr_res_errno, parentr->lr_res_error ?
1075             parentr->lr_res_error : "", parentr->lr_res_matched ?
1076             parentr->lr_res_matched : "" );
1077 }
1078
1079
1080
1081 int
1082 ldap_msgtype( LDAPMessage *lm )
1083 {
1084         assert( lm != NULL );
1085         return ( lm != NULL ) ? (int)lm->lm_msgtype : -1;
1086 }
1087
1088
1089 int
1090 ldap_msgid( LDAPMessage *lm )
1091 {
1092         assert( lm != NULL );
1093
1094         return ( lm != NULL ) ? lm->lm_msgid : -1;
1095 }
1096
1097
1098 char * ldap_int_msgtype2str( ber_tag_t tag )
1099 {
1100         switch( tag ) {
1101         case LDAP_RES_ADD: return "add";
1102         case LDAP_RES_BIND: return "bind";
1103         case LDAP_RES_COMPARE: return "compare";
1104         case LDAP_RES_DELETE: return "delete";
1105         case LDAP_RES_EXTENDED: return "extended-result";
1106         case LDAP_RES_INTERMEDIATE: return "intermediate";
1107         case LDAP_RES_MODIFY: return "modify";
1108         case LDAP_RES_RENAME: return "rename";
1109         case LDAP_RES_SEARCH_ENTRY: return "search-entry";
1110         case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
1111         case LDAP_RES_SEARCH_RESULT: return "search-result";
1112         }
1113         return "unknown";
1114 }
1115
1116 int
1117 ldap_msgfree( LDAPMessage *lm )
1118 {
1119         LDAPMessage     *next;
1120         int             type = 0;
1121
1122         Debug( LDAP_DEBUG_TRACE, "ldap_msgfree\n", 0, 0, 0 );
1123
1124         for ( ; lm != NULL; lm = next ) {
1125                 next = lm->lm_chain;
1126                 type = lm->lm_msgtype;
1127                 ber_free( lm->lm_ber, 1 );
1128                 LDAP_FREE( (char *) lm );
1129         }
1130
1131         return( type );
1132 }
1133
1134 /*
1135  * ldap_msgdelete - delete a message.  It returns:
1136  *      0       if the entire message was deleted
1137  *      -1      if the message was not found, or only part of it was found
1138  */
1139 int
1140 ldap_msgdelete( LDAP *ld, int msgid )
1141 {
1142         LDAPMessage     *lm, *prev;
1143         int rc = 0;
1144
1145         assert( ld != NULL );
1146
1147         Debug( LDAP_DEBUG_TRACE, "ldap_msgdelete\n", 0, 0, 0 );
1148
1149         prev = NULL;
1150 #ifdef LDAP_R_COMPILE
1151         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
1152 #endif
1153         for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
1154                 if ( lm->lm_msgid == msgid )
1155                         break;
1156                 prev = lm;
1157         }
1158
1159         if ( lm == NULL ) {
1160                 rc = -1;
1161         } else {
1162                 if ( prev == NULL )
1163                         ld->ld_responses = lm->lm_next;
1164                 else
1165                         prev->lm_next = lm->lm_next;
1166         }
1167 #ifdef LDAP_R_COMPILE
1168         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
1169 #endif
1170         if ( lm && ldap_msgfree( lm ) == LDAP_RES_SEARCH_ENTRY )
1171                 rc = -1;
1172
1173         return( rc );
1174 }
1175
1176
1177 /*
1178  * ldap_abandoned
1179  *
1180  * return 1 if message msgid is waiting to be abandoned, 0 otherwise
1181  *
1182  * expects ld_res_mutex to be locked
1183  */
1184 static int
1185 ldap_abandoned( LDAP *ld, ber_int_t msgid )
1186 {
1187         int     i;
1188
1189 #ifdef LDAP_R_COMPILE
1190         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1191 #endif
1192
1193         if ( ld->ld_abandoned == NULL )
1194                 return( 0 );
1195
1196         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1197                 if ( ld->ld_abandoned[i] == msgid )
1198                         return( 1 );
1199
1200         return( 0 );
1201 }
1202
1203
1204 /*
1205  * ldap_mark_abandoned
1206  *
1207  * expects ld_res_mutex to be locked
1208  */
1209 static int
1210 ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
1211 {
1212         int     i;
1213
1214 #ifdef LDAP_R_COMPILE
1215         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1216 #endif
1217
1218         if ( ld->ld_abandoned == NULL )
1219                 return( -1 );
1220
1221         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1222                 if ( ld->ld_abandoned[i] == msgid )
1223                         break;
1224
1225         if ( ld->ld_abandoned[i] == -1 )
1226                 return( -1 );
1227
1228         for ( ; ld->ld_abandoned[i] != -1; i++ ) {
1229                 ld->ld_abandoned[i] = ld->ld_abandoned[i + 1];
1230         }
1231
1232         return( 0 );
1233 }