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 1998-2005 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, Sockbuf *sb, 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
  82 /*
  83  * ldap_result - wait for an ldap result response to a message from the
  84  * ldap server.  If msgid is LDAP_RES_ANY (-1), any message will be
  85  * accepted.  If msgid is LDAP_RES_UNSOLICITED (0), any unsolicited
  86  * message is accepted.  Otherwise ldap_result will wait for a response
  87  * with msgid.  If all is LDAP_MSG_ONE (0) the first message with id
  88  * msgid will be accepted, otherwise, ldap_result will wait for all
  89  * responses with id msgid and then return a pointer to the entire list
  90  * of messages.  In general, this is only useful for search responses,
  91  * which can be of three message types (zero or more entries, zero or
  92  * search references, followed by an ldap result).  An extension to
  93  * LDAPv3 allows partial extended responses to be returned in response
  94  * to any request.  The type of the first message received is returned.
  95  * When waiting, any messages that have been abandoned are discarded.
  96  *
  97  * Example:
  98  *      ldap_result( s, msgid, all, timeout, result )
  99  */
 100 int
 101 ldap_result(
 102         LDAP *ld,
 103         int msgid,
 104         int all,
 105         struct timeval *timeout,
 106         LDAPMessage **result )
 107 {
 108         LDAPMessage     *lm;
 109         int     rc;
 110
 111         assert( ld != NULL );
 112         assert( result != NULL );
 113
 114         Debug( LDAP_DEBUG_TRACE, "ldap_result ld %p msgid %d\n", ld, msgid, 0 );
 115
 116 #ifdef LDAP_R_COMPILE
 117         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
 118 #endif
 119         lm = chkResponseList(ld, msgid, all);
 120
 121         if ( lm == NULL ) {
 122                 rc = wait4msg( ld, msgid, all, timeout, result );
 123         } else {
 124                 *result = lm;
 125                 ld->ld_errno = LDAP_SUCCESS;
 126                 rc = lm->lm_msgtype;
 127         }
 128 #ifdef LDAP_R_COMPILE
 129         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
 130 #endif
 131         return( rc );
 132 }
 133
 134 static LDAPMessage *
 135 chkResponseList(
 136         LDAP *ld,
 137         int msgid,
 138         int all)
 139 {
 140         LDAPMessage     *lm, **lastlm, *nextlm;
 141     /*
 142          * Look through the list of responses we have received on
 143          * this association and see if the response we're interested in
 144          * is there.  If it is, return it.  If not, call wait4msg() to
 145          * wait until it arrives or timeout occurs.
 146          */
 147
 148         Debug( LDAP_DEBUG_TRACE,
 149                 "ldap_chkResponseList ld %p msgid %d all %d\n",
 150             ld, msgid, all );
 151         lastlm = &ld->ld_responses;
 152         for ( lm = ld->ld_responses; lm != NULL; lm = nextlm ) {
 153                 nextlm = lm->lm_next;
 154
 155                 if ( ldap_abandoned( ld, lm->lm_msgid ) ) {
 156                         Debug( LDAP_DEBUG_TRACE,
 157                                 "ldap_chkResponseList msg abandoned, msgid %d\n",
 158                             msgid, 0, 0 );
 159                         ldap_mark_abandoned( ld, lm->lm_msgid );
 160
 161                         /* Remove this entry from list */
 162                         *lastlm = nextlm;
 163
 164                         ldap_msgfree( lm );
 165
 166                         continue;
 167                 }
 168
 169                 if ( msgid == LDAP_RES_ANY || lm->lm_msgid == msgid ) {
 170                         LDAPMessage     *tmp;
 171
 172                         if ( all == LDAP_MSG_ONE || all == LDAP_MSG_RECEIVED ||
 173                                 msgid == LDAP_RES_UNSOLICITED ) {
 174                                 break;
 175                         }
 176
 177                         tmp = lm->lm_chain_tail;
 178                         if ((tmp->lm_msgtype == LDAP_RES_SEARCH_ENTRY) ||
 179                                 (tmp->lm_msgtype == LDAP_RES_SEARCH_REFERENCE) ||
 180                                 (tmp->lm_msgtype == LDAP_RES_INTERMEDIATE)) {
 181                                 tmp = NULL;
 182                         }
 183
 184                         if ( tmp == NULL ) {
 185                                 lm = NULL;
 186                         }
 187
 188                         break;
 189                 }
 190                 lastlm = &lm->lm_next;
 191         }
 192
 193     if ( lm != NULL ) {
 194                 /* Found an entry, remove it from the list */
 195             if ( all == LDAP_MSG_ONE && lm->lm_chain != NULL ) {
 196                         *lastlm = lm->lm_chain;
 197                         lm->lm_chain->lm_next = lm->lm_next;
 198                         lm->lm_chain->lm_chain_tail = ( lm->lm_chain_tail != lm ) ? lm->lm_chain_tail : lm->lm_chain;
 199                         lm->lm_chain = NULL;
 200                         lm->lm_chain_tail = NULL;
 201             } else {
 202                         *lastlm = lm->lm_next;
 203                 }
 204             lm->lm_next = NULL;
 205     }
 206
 207 #ifdef LDAP_DEBUG
 208         if( lm == NULL) {
 209                 Debug( LDAP_DEBUG_TRACE,
 210                         "ldap_chkResponseList returns ld %p NULL\n", ld, 0, 0);
 211         } else {
 212                 Debug( LDAP_DEBUG_TRACE,
 213                         "ldap_chkResponseList returns ld %p msgid %d, type 0x%02lu\n",
 214                         ld, lm->lm_msgid, (unsigned long) lm->lm_msgtype);
 215         }
 216 #endif
 217     return lm;
 218 }
 219
 220 static int
 221 wait4msg(
 222         LDAP *ld,
 223         ber_int_t msgid,
 224         int all,
 225         struct timeval *timeout,
 226         LDAPMessage **result )
 227 {
 228         int             rc;
 229         struct timeval  tv = { 0 },
 230                         tv0 = { 0 },
 231                         *tvp;
 232         time_t          start_time = 0;
 233         time_t          tmp_time;
 234         LDAPConn        *lc, *nextlc;
 235
 236         assert( ld != NULL );
 237         assert( result != NULL );
 238
 239 #ifdef LDAP_DEBUG
 240         if ( timeout == NULL ) {
 241                 Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (infinite timeout)\n",
 242                     ld, msgid, 0 );
 243         } else {
 244                 Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (timeout %ld usec)\n",
 245                     ld, msgid, (long)timeout->tv_sec * 1000000 + timeout->tv_usec );
 246         }
 247 #endif /* LDAP_DEBUG */
 248
 249         if ( timeout == NULL ) {
 250                 tvp = NULL;
 251         } else {
 252                 tv0 = *timeout;
 253                 tv = *timeout;
 254                 tvp = &tv;
 255                 start_time = time( NULL );
 256         }
 257
 258         rc = -2;
 259         while ( rc == -2 ) {
 260 #ifdef LDAP_DEBUG
 261                 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
 262                         Debug( LDAP_DEBUG_TRACE, "wait4msg continue ld %p msgid %d all %d\n",
 263                                 ld, msgid, all );
 264                         ldap_dump_connection( ld, ld->ld_conns, 1 );
 265                         ldap_dump_requests_and_responses( ld );
 266                 }
 267 #endif /* LDAP_DEBUG */
 268
 269                 if ( (*result = chkResponseList(ld, msgid, all)) != NULL ) {
 270                         rc = (*result)->lm_msgtype;
 271
 272                 } else {
 273                         int lc_ready = 0;
 274
 275 #ifdef LDAP_R_COMPILE
 276                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 277 #endif
 278                         for ( lc = ld->ld_conns; lc != NULL; lc = nextlc ) {
 279                                 nextlc = lc->lconn_next;
 280                                 if ( ber_sockbuf_ctrl( lc->lconn_sb,
 281                                                 LBER_SB_OPT_DATA_READY, NULL ) ) {
 282 #ifdef LDAP_R_COMPILE
 283                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 284 #endif
 285                                         rc = try_read1msg( ld, msgid, all, lc->lconn_sb,
 286                                                 &lc, result );
 287 #ifdef LDAP_R_COMPILE
 288                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 289 #endif
 290                                         lc_ready = 1;
 291                                         break;
 292                                 }
 293                         }
 294 #ifdef LDAP_R_COMPILE
 295                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 296 #endif
 297
 298                         if ( !lc_ready ) {
 299                                 rc = ldap_int_select( ld, tvp );
 300 #ifdef LDAP_DEBUG
 301                                 if ( rc == -1 ) {
 302                                         Debug( LDAP_DEBUG_TRACE,
 303                                                 "ldap_int_select returned -1: errno %d\n",
 304                                                 errno, 0, 0 );
 305                                 }
 306 #endif
 307
 308                                 if ( rc == 0 || ( rc == -1 && (
 309                                         !LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART)
 310                                                 || errno != EINTR )))
 311                                 {
 312                                         ld->ld_errno = (rc == -1 ? LDAP_SERVER_DOWN :
 313                                                 LDAP_TIMEOUT);
 314                                         return( rc );
 315                                 }
 316
 317                                 if ( rc == -1 ) {
 318                                         rc = -2;        /* select interrupted: loop */
 319                                 } else {
 320                                         rc = -2;
 321 #ifdef LDAP_R_COMPILE
 322                                         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 323 #endif
 324                                         if ( ld->ld_requests &&
 325                                                 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
 326                                                 ldap_is_write_ready( ld,
 327                                                         ld->ld_requests->lr_conn->lconn_sb ) )
 328                                         {
 329                                                 ldap_int_flush_request( ld, ld->ld_requests );
 330                                         }
 331 #ifdef LDAP_R_COMPILE
 332                                         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 333                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 334 #endif
 335                                         for ( lc = ld->ld_conns; rc == -2 && lc != NULL;
 336                                                 lc = nextlc )
 337                                         {
 338                                                 nextlc = lc->lconn_next;
 339                                                 if ( lc->lconn_status == LDAP_CONNST_CONNECTED &&
 340                                                         ldap_is_read_ready( ld, lc->lconn_sb ))
 341                                                 {
 342 #ifdef LDAP_R_COMPILE
 343                                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 344 #endif
 345                                                         rc = try_read1msg( ld, msgid, all,
 346                                                                 lc->lconn_sb, &lc, result );
 347                                                                 if ( lc == NULL ) lc = nextlc;
 348 #ifdef LDAP_R_COMPILE
 349                                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 350 #endif
 351                                                 }
 352                                         }
 353 #ifdef LDAP_R_COMPILE
 354                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 355 #endif
 356                                 }
 357                         }
 358                 }
 359
 360                 if ( rc == -2 && tvp != NULL ) {
 361                         tmp_time = time( NULL );
 362                         tv0.tv_sec -= ( tmp_time - start_time );
 363                         if ( tv0.tv_sec <= 0 ) {
 364                                 rc = 0; /* timed out */
 365                                 ld->ld_errno = LDAP_TIMEOUT;
 366                                 break;
 367                         }
 368                         tv.tv_sec = tv0.tv_sec;
 369
 370                         Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p %ld secs to go\n",
 371                                ld, (long) tv.tv_sec, 0 );
 372                         start_time = tmp_time;
 373                 }
 374         }
 375
 376         return( rc );
 377 }
 378
 379
 380 static ber_tag_t
 381 try_read1msg(
 382         LDAP *ld,
 383         ber_int_t msgid,
 384         int all,
 385         Sockbuf *sb,
 386         LDAPConn **lcp,
 387         LDAPMessage **result )
 388 {
 389         BerElement      *ber;
 390         LDAPMessage     *newmsg, *l, *prev;
 391         ber_int_t       id;
 392         ber_tag_t       tag;
 393         ber_len_t       len;
 394         int             foundit = 0;
 395         LDAPRequest     *lr, *tmplr;
 396         LDAPConn        *lc;
 397         BerElement      tmpber;
 398         int             rc, refer_cnt, hadref, simple_request;
 399         ber_int_t       lderr;
 400
 401 #ifdef LDAP_CONNECTIONLESS
 402         LDAPMessage     *tmp = NULL, *chain_head = NULL;
 403         int             moremsgs = 0, isv2 = 0;
 404 #endif
 405
 406         /*
 407          * v3ref = flag for V3 referral / search reference
 408          * 0 = not a ref, 1 = sucessfully chased ref, -1 = pass ref to application
 409          */
 410         enum {
 411                 V3REF_NOREF     = 0,
 412                 V3REF_SUCCESS   = 1,
 413                 V3REF_TOAPP     = -1
 414         }       v3ref;
 415
 416         assert( ld != NULL );
 417         assert( lcp != NULL );
 418         assert( *lcp != NULL );
 419
 420         Debug( LDAP_DEBUG_TRACE, "read1msg: ld %p msgid %d all %d\n", ld, msgid, all );
 421
 422         lc = *lcp;
 423
 424 retry:
 425         if ( lc->lconn_ber == NULL ) {
 426                 lc->lconn_ber = ldap_alloc_ber_with_options(ld);
 427
 428                 if( lc->lconn_ber == NULL ) {
 429                         return -1;
 430                 }
 431         }
 432
 433         ber = lc->lconn_ber;
 434         assert( LBER_VALID (ber) );
 435
 436         /* get the next message */
 437         errno = 0;
 438 #ifdef LDAP_CONNECTIONLESS
 439         if ( LDAP_IS_UDP(ld) ) {
 440                 struct sockaddr from;
 441                 ber_int_sb_read(sb, &from, sizeof(struct sockaddr));
 442                 if (ld->ld_options.ldo_version == LDAP_VERSION2) isv2=1;
 443         }
 444 nextresp3:
 445 #endif
 446         tag = ber_get_next( sb, &len, ber );
 447         if ( tag == LDAP_TAG_MESSAGE ) {
 448                 /*
 449                  * We read a complete message.
 450                  * The connection should no longer need this ber.
 451                  */
 452                 lc->lconn_ber = NULL;
 453         }
 454         if ( tag != LDAP_TAG_MESSAGE ) {
 455                 if ( tag == LBER_DEFAULT) {
 456 #ifdef LDAP_DEBUG
 457                         Debug( LDAP_DEBUG_CONNS,
 458                               "ber_get_next failed.\n", 0, 0, 0 );
 459 #endif
 460 #ifdef EWOULDBLOCK
 461                         if (errno==EWOULDBLOCK) return -2;
 462 #endif
 463 #ifdef EAGAIN
 464                         if (errno == EAGAIN) return -2;
 465 #endif
 466                         ld->ld_errno = LDAP_SERVER_DOWN;
 467                         return -1;
 468                 }
 469                 ld->ld_errno = LDAP_LOCAL_ERROR;
 470                 return -1;
 471         }
 472
 473         /* message id */
 474         if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
 475                 ber_free( ber, 1 );
 476                 ld->ld_errno = LDAP_DECODING_ERROR;
 477                 return( -1 );
 478         }
 479
 480         /* if it's been abandoned, toss it */
 481         if ( ldap_abandoned( ld, id ) ) {
 482                 Debug( LDAP_DEBUG_ANY, "abandoned ld %p msgid %ld\n",
 483                          ld, (long) id, 0);
 484 retry_ber:
 485                 ber_free( ber, 1 );
 486                 if ( ber_sockbuf_ctrl( sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 487                         goto retry;
 488                 }
 489                 return( -2 );   /* continue looking */
 490         }
 491
 492         lr = ldap_find_request_by_msgid( ld, id );
 493         if ( lr == NULL ) {
 494                 Debug( LDAP_DEBUG_ANY,
 495                     "no request for response on ld %p msgid %ld (tossing)\n",
 496                     ld, (long) id, 0 );
 497                 goto retry_ber;
 498         }
 499 #ifdef LDAP_CONNECTIONLESS
 500         if (LDAP_IS_UDP(ld) && isv2) {
 501                 ber_scanf(ber, "x{");
 502         }
 503 nextresp2:
 504 #endif
 505         /* the message type */
 506         if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
 507                 ld->ld_errno = LDAP_DECODING_ERROR;
 508                 ber_free( ber, 1 );
 509                 return( -1 );
 510         }
 511
 512         Debug( LDAP_DEBUG_TRACE,
 513                 "read1msg: ld %p msgid %ld message type %s\n",
 514                 ld, (long) lr->lr_msgid, ldap_int_msgtype2str( tag ));
 515
 516         id = lr->lr_origid;
 517         refer_cnt = 0;
 518         hadref = simple_request = 0;
 519         rc = -2;        /* default is to keep looking (no response found) */
 520         lr->lr_res_msgtype = tag;
 521
 522         /*
 523          * This code figures out if we are going to chase a
 524          * referral / search reference, or pass it back to the application
 525          */
 526         v3ref = V3REF_NOREF;    /* Assume not a V3 search reference/referral */
 527         if( (tag != LDAP_RES_SEARCH_ENTRY) && (ld->ld_version > LDAP_VERSION2) ) {
 528                 BerElement      tmpber = *ber;  /* struct copy */
 529                 char **refs = NULL;
 530
 531                 if( tag == LDAP_RES_SEARCH_REFERENCE ) {
 532                         /* This is a V3 search reference */
 533                         /* Assume we do not chase the reference,
 534                          * but pass it to application */
 535                         v3ref = V3REF_TOAPP;
 536                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
 537                                         (lr->lr_parent != NULL) )
 538                         {
 539                                 /* Get the referral list */
 540                                 if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
 541                                         rc = LDAP_DECODING_ERROR;
 542                                 } else {
 543                                         /* Note: refs array is freed by ldap_chase_v3referrals */
 544                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 545                                             1, &lr->lr_res_error, &hadref );
 546                                         if ( refer_cnt > 0 ) {
 547                                                 /* sucessfully chased reference */
 548                                                 /* If haven't got end search, set chasing referrals */
 549                                                 if( lr->lr_status != LDAP_REQST_COMPLETED) {
 550                                                         lr->lr_status = LDAP_REQST_CHASINGREFS;
 551                                                         Debug( LDAP_DEBUG_TRACE,
 552                                                                 "read1msg:  search ref chased, "
 553                                                                 "mark request chasing refs, "
 554                                                                 "id = %d\n",
 555                                                                 lr->lr_msgid, 0, 0);
 556                                                 }
 557
 558                                                 /* We sucessfully chased the reference */
 559                                                 v3ref = V3REF_SUCCESS;
 560                                         }
 561                                 }
 562                         }
 563                 } else {
 564                         /* Check for V3 referral */
 565                         ber_len_t       len;
 566                         char            *lr_res_error = NULL;
 567
 568                         if ( ber_scanf( &tmpber, "{eaa",/*}*/ &lderr,
 569                                     &lr->lr_res_matched, &lr_res_error )
 570                                     != LBER_ERROR )
 571                         {
 572                                 if ( lr_res_error != NULL ) {
 573                                         if ( lr->lr_res_error != NULL ) {
 574                                                 (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 575                                                 LDAP_FREE( (char *)lr_res_error );
 576
 577                                         } else {
 578                                                 lr->lr_res_error = lr_res_error;
 579                                         }
 580                                 }
 581
 582                                 /* Check if V3 referral */
 583                                 if ( ber_peek_tag( &tmpber, &len ) == LDAP_TAG_REFERRAL ) {
 584                                         /* We have a V3 referral, assume we cannot chase it */
 585                                         v3ref = V3REF_TOAPP;
 586                                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS)
 587                                                          || (lr->lr_parent != NULL) )
 588                                         {
 589                                                 /* Assume referral not chased and return it to app */
 590                                                 v3ref = V3REF_TOAPP;
 591
 592                                                 /* Get the referral list */
 593                                                 if( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
 594                                                         rc = LDAP_DECODING_ERROR;
 595                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 596                                                         Debug( LDAP_DEBUG_TRACE,
 597                                                             "read1msg: referral decode error, mark request completed, ld %p msgid %d\n",
 598                                                                     ld, lr->lr_msgid, 0);
 599                                                 } else {
 600                                                         /* Chase the referral
 601                                                          * Note: refs arrary is freed by ldap_chase_v3referrals
 602                                                          */
 603                                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 604                                                             0, &lr->lr_res_error, &hadref );
 605                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 606                                                         Debug( LDAP_DEBUG_TRACE,
 607                                                             "read1msg: referral chased, mark request completed, ld %p msgid %d\n",
 608                                                             ld, lr->lr_msgid, 0);
 609                                                         if( refer_cnt > 0) {
 610                                                                 /* Referral successfully chased */
 611                                                                 v3ref = V3REF_SUCCESS;
 612                                                         }
 613                                                 }
 614                                         }
 615                                 }
 616
 617                                 if( lr->lr_res_matched != NULL ) {
 618                                         LDAP_FREE( lr->lr_res_matched );
 619                                         lr->lr_res_matched = NULL;
 620                                 }
 621                                 if( lr->lr_res_error != NULL ) {
 622                                         LDAP_FREE( lr->lr_res_error );
 623                                         lr->lr_res_error = NULL;
 624                                 }
 625                         }
 626                 }
 627         }
 628
 629         /* All results that just return a status, i.e. don't return data
 630          * go through the following code.  This code also chases V2 referrals
 631          * and checks if all referrals have been chased.
 632          */
 633         if ( (tag != LDAP_RES_SEARCH_ENTRY) && (v3ref != V3REF_TOAPP) &&
 634                 (tag != LDAP_RES_INTERMEDIATE ))
 635         {
 636                 /* For a v3 search referral/reference, only come here if already chased it */
 637                 if ( ld->ld_version >= LDAP_VERSION2 &&
 638                         ( lr->lr_parent != NULL ||
 639                         LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ) )
 640                 {
 641                         char            *lr_res_error = NULL;
 642
 643                         tmpber = *ber;  /* struct copy */
 644                         if ( v3ref == V3REF_SUCCESS ) {
 645                                 /* V3 search reference or V3 referral
 646                                  * sucessfully chased. If this message
 647                                  * is a search result, then it has no more
 648                                  * outstanding referrals.
 649                                  */
 650                                 if ( tag == LDAP_RES_SEARCH_RESULT )
 651                                         refer_cnt = 0;
 652                         } else if ( ber_scanf( &tmpber, "{eaa}", &lderr,
 653                                 &lr->lr_res_matched, &lr_res_error )
 654                                 != LBER_ERROR )
 655                         {
 656                                 if ( lr_res_error != NULL ) {
 657                                         if ( lr->lr_res_error != NULL ) {
 658                                                 (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 659                                                 LDAP_FREE( (char *)lr_res_error );
 660                                         } else {
 661                                                 lr->lr_res_error = lr_res_error;
 662                                         }
 663                                         lr_res_error = NULL;
 664                                 }
 665
 666                                 switch ( lderr ) {
 667                                 case LDAP_SUCCESS:
 668                                 case LDAP_COMPARE_TRUE:
 669                                 case LDAP_COMPARE_FALSE:
 670                                         break;
 671
 672                                 default:
 673                                         if ( lr->lr_res_error == NULL
 674                                                 || lr->lr_res_error[ 0 ] == '\0' )
 675                                         {
 676                                                 break;
 677                                         }
 678
 679                                         /* referrals are in error string */
 680                                         refer_cnt = ldap_chase_referrals( ld, lr,
 681                                                 &lr->lr_res_error, -1, &hadref );
 682                                         lr->lr_status = LDAP_REQST_COMPLETED;
 683                                         Debug( LDAP_DEBUG_TRACE,
 684                                                 "read1msg:  V2 referral chased, "
 685                                                 "mark request completed, id = %d\n",
 686                                                 lr->lr_msgid, 0, 0 );
 687                                         break;
 688                                 }
 689
 690                                 /* save errno, message, and matched string */
 691                                 if ( !hadref || lr->lr_res_error == NULL ) {
 692                                         lr->lr_res_errno = ( lderr ==
 693                                         LDAP_PARTIAL_RESULTS ) ? LDAP_SUCCESS
 694                                         : lderr;
 695                                 } else if ( ld->ld_errno != LDAP_SUCCESS ) {
 696                                         lr->lr_res_errno = ld->ld_errno;
 697                                 } else {
 698                                         lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
 699                                 }
 700 Debug( LDAP_DEBUG_TRACE,
 701     "new result:  res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 702     lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 703     lr->lr_res_matched ? lr->lr_res_matched : "" );
 704                         }
 705                 }
 706
 707                 Debug( LDAP_DEBUG_TRACE,
 708                     "read1msg: ld %p %d new referrals\n", ld, refer_cnt, 0 );
 709
 710                 if ( refer_cnt != 0 ) { /* chasing referrals */
 711                         ber_free( ber, 1 );
 712                         ber = NULL;
 713                         if ( refer_cnt < 0 ) {
 714                                 return( -1 );   /* fatal error */
 715                         }
 716                         lr->lr_res_errno = LDAP_SUCCESS; /* sucessfully chased referral */
 717                 } else {
 718                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
 719                                 /* request without any referrals */
 720                                 simple_request = ( hadref ? 0 : 1 );
 721                         } else {
 722                                 /* request with referrals or child request */
 723                                 ber_free( ber, 1 );
 724                                 ber = NULL;
 725                         }
 726
 727                         lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
 728                         Debug( LDAP_DEBUG_TRACE,
 729                             "read1msg:  mark request completed, ld %p msgid %d\n", ld, lr->lr_msgid, 0);
 730                         while ( lr->lr_parent != NULL ) {
 731                                 merge_error_info( ld, lr->lr_parent, lr );
 732
 733                                 lr = lr->lr_parent;
 734                                 if ( --lr->lr_outrefcnt > 0 ) {
 735                                         break;  /* not completely done yet */
 736                                 }
 737                         }
 738
 739                         /* Check if all requests are finished, lr is now parent */
 740                         tmplr = lr;
 741                         if (tmplr->lr_status == LDAP_REQST_COMPLETED) {
 742                                 for ( tmplr=lr->lr_child;
 743                                         tmplr != NULL;
 744                                         tmplr=tmplr->lr_refnext)
 745                                 {
 746                                         if( tmplr->lr_status != LDAP_REQST_COMPLETED) break;
 747                                 }
 748                         }
 749
 750                         /* This is the parent request if the request has referrals */
 751                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL &&
 752                                 tmplr == NULL )
 753                         {
 754                                 id = lr->lr_msgid;
 755                                 tag = lr->lr_res_msgtype;
 756                                 Debug( LDAP_DEBUG_ANY, "request done: ld %p msgid %ld\n",
 757                                     ld, (long) id, 0 );
 758 Debug( LDAP_DEBUG_TRACE,
 759 "res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 760 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 761 lr->lr_res_matched ? lr->lr_res_matched : "" );
 762                                 if ( !simple_request ) {
 763                                         ber_free( ber, 1 );
 764                                         ber = NULL;
 765                                         if ( build_result_ber( ld, &ber, lr )
 766                                             == LBER_ERROR ) {
 767                                                 rc = -1; /* fatal error */
 768                                         }
 769                                 }
 770
 771 #ifdef LDAP_R_COMPILE
 772                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 773 #endif
 774                                 ldap_free_request( ld, lr );
 775 #ifdef LDAP_R_COMPILE
 776                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 777 #endif
 778                         }
 779
 780                         if ( lc != NULL ) {
 781 #ifdef LDAP_R_COMPILE
 782                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 783 #endif
 784                                 ldap_free_connection( ld, lc, 0, 1 );
 785 #ifdef LDAP_R_COMPILE
 786                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 787 #endif
 788                                 *lcp = NULL;
 789                         }
 790                 }
 791         }
 792
 793         if ( ber == NULL ) {
 794                 return( rc );
 795         }
 796
 797         /* make a new ldap message */
 798         newmsg = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) );
 799         if ( newmsg == NULL ) {
 800                 ld->ld_errno = LDAP_NO_MEMORY;
 801                 return( -1 );
 802         }
 803         newmsg->lm_msgid = (int)id;
 804         newmsg->lm_msgtype = tag;
 805         newmsg->lm_ber = ber;
 806         newmsg->lm_chain_tail = newmsg;
 807
 808 #ifdef LDAP_CONNECTIONLESS
 809         /* CLDAP replies all fit in a single datagram. In LDAPv2 RFC1798
 810          * the responses are all a sequence wrapped in one message. In
 811          * LDAPv3 each response is in its own message. The datagram must
 812          * end with a SearchResult. We can't just parse each response in
 813          * separate calls to try_read1msg because the header info is only
 814          * present at the beginning of the datagram, not at the beginning
 815          * of each response. So parse all the responses at once and queue
 816          * them up, then pull off the first response to return to the
 817          * caller when all parsing is complete.
 818          */
 819         if ( LDAP_IS_UDP(ld) ) {
 820                 /* If not a result, look for more */
 821                 if ( tag != LDAP_RES_SEARCH_RESULT ) {
 822                         int ok = 0;
 823                         moremsgs = 1;
 824                         if (isv2) {
 825                                 /* LDAPv2: dup the current ber, skip past the current
 826                                  * response, and see if there are any more after it.
 827                                  */
 828                                 ber = ber_dup( ber );
 829                                 ber_scanf( ber, "x" );
 830                                 if (ber_peek_tag(ber, &len) != LBER_DEFAULT) {
 831                                         /* There's more - dup the ber buffer so they can all be
 832                                          * individually freed by ldap_msgfree.
 833                                          */
 834                                         struct berval bv;
 835                                         ber_get_option(ber, LBER_OPT_BER_REMAINING_BYTES, &len);
 836                                         bv.bv_val = LDAP_MALLOC(len);
 837                                         if (bv.bv_val) {
 838                                                 ok=1;
 839                                                 ber_read(ber, bv.bv_val, len);
 840                                                 bv.bv_len = len;
 841                                                 ber_init2(ber, &bv, ld->ld_lberoptions );
 842                                         }
 843                                 }
 844                         } else {
 845                                 /* LDAPv3: Just allocate a new ber. Since this is a buffered
 846                                  * datagram, if the sockbuf is readable we still have data
 847                                  * to parse.
 848                                  */
 849                                 ber = ldap_alloc_ber_with_options(ld);
 850                                 if (ber_sockbuf_ctrl(sb, LBER_SB_OPT_DATA_READY, NULL)) ok=1;
 851                         }
 852                         /* set up response chain */
 853                         if ( tmp == NULL ) {
 854                                 newmsg->lm_next = ld->ld_responses;
 855                                 ld->ld_responses = newmsg;
 856                                 chain_head = newmsg;
 857                         } else {
 858                                 tmp->lm_chain = newmsg;
 859                         }
 860                         chain_head->lm_chain_tail = newmsg;
 861                         tmp = newmsg;
 862                         /* "ok" means there's more to parse */
 863                         if (ok) {
 864                                 if (isv2) goto nextresp2;
 865                                 else goto nextresp3;
 866                         } else {
 867                                 /* got to end of datagram without a SearchResult. Free
 868                                  * our dup'd ber, but leave any buffer alone. For v2 case,
 869                                  * the previous response is still using this buffer. For v3,
 870                                  * the new ber has no buffer to free yet.
 871                                  */
 872                                 ber_free(ber, 0);
 873                                 return -1;
 874                         }
 875                 } else if ( moremsgs ) {
 876                 /* got search result, and we had multiple responses in 1 datagram.
 877                  * stick the result onto the end of the chain, and then pull the
 878                  * first response off the head of the chain.
 879                  */
 880                         tmp->lm_chain = newmsg;
 881                         chain_head->lm_chain_tail = newmsg;
 882                         *result = chkResponseList( ld, msgid, all );
 883                         ld->ld_errno = LDAP_SUCCESS;
 884                         return( (*result)->lm_msgtype );
 885                 }
 886         }
 887 #endif /* LDAP_CONNECTIONLESS */
 888
 889         /* is this the one we're looking for? */
 890         if ( msgid == LDAP_RES_ANY || id == msgid ) {
 891                 if ( all == LDAP_MSG_ONE
 892                     || (newmsg->lm_msgtype != LDAP_RES_SEARCH_RESULT
 893                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 894                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_REFERENCE) ) {
 895                         *result = newmsg;
 896                         ld->ld_errno = LDAP_SUCCESS;
 897                         return( tag );
 898                 } else if ( newmsg->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
 899                         foundit = 1;    /* return the chain later */
 900                 }
 901         }
 902
 903         /*
 904          * if not, we must add it to the list of responses.  if
 905          * the msgid is already there, it must be part of an existing
 906          * search response.
 907          */
 908
 909         prev = NULL;
 910         for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
 911                 if ( l->lm_msgid == newmsg->lm_msgid )
 912                         break;
 913                 prev = l;
 914         }
 915
 916         /* not part of an existing search response */
 917         if ( l == NULL ) {
 918                 if ( foundit ) {
 919                         *result = newmsg;
 920                         goto exit;
 921                 }
 922
 923                 newmsg->lm_next = ld->ld_responses;
 924                 ld->ld_responses = newmsg;
 925                 goto exit;
 926         }
 927
 928         Debug( LDAP_DEBUG_TRACE, "adding response ld %p msgid %ld type %ld:\n",
 929             ld, (long) newmsg->lm_msgid, (long) newmsg->lm_msgtype );
 930
 931         /* part of a search response - add to end of list of entries */
 932         l->lm_chain_tail->lm_chain = newmsg;
 933         l->lm_chain_tail = newmsg;
 934
 935         /* return the whole chain if that's what we were looking for */
 936         if ( foundit ) {
 937                 if ( prev == NULL )
 938                         ld->ld_responses = l->lm_next;
 939                 else
 940                         prev->lm_next = l->lm_next;
 941                 *result = l;
 942         }
 943
 944 exit:
 945         if ( foundit ) {
 946                 ld->ld_errno = LDAP_SUCCESS;
 947                 return( tag );
 948         }
 949         if ( ber_sockbuf_ctrl( sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 950                 goto retry;
 951         }
 952         return( -2 );   /* continue looking */
 953 }
 954
 955
 956 static ber_tag_t
 957 build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
 958 {
 959         ber_len_t       len;
 960         ber_tag_t       tag;
 961         ber_int_t       along;
 962         BerElement *ber;
 963
 964         *bp = NULL;
 965         ber = ldap_alloc_ber_with_options( ld );
 966
 967         if( ber == NULL ) {
 968                 ld->ld_errno = LDAP_NO_MEMORY;
 969                 return LBER_ERROR;
 970         }
 971
 972         if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
 973                 lr->lr_res_msgtype, lr->lr_res_errno,
 974                 lr->lr_res_matched ? lr->lr_res_matched : "",
 975                 lr->lr_res_error ? lr->lr_res_error : "" ) == -1 )
 976         {
 977                 ld->ld_errno = LDAP_ENCODING_ERROR;
 978                 ber_free(ber, 1);
 979                 return( LBER_ERROR );
 980         }
 981
 982         ber_reset( ber, 1 );
 983
 984         if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
 985                 ld->ld_errno = LDAP_DECODING_ERROR;
 986                 ber_free(ber, 1);
 987                 return( LBER_ERROR );
 988         }
 989
 990         if ( ber_get_enum( ber, &along ) == LBER_ERROR ) {
 991                 ld->ld_errno = LDAP_DECODING_ERROR;
 992                 ber_free(ber, 1);
 993                 return( LBER_ERROR );
 994         }
 995
 996         tag = ber_peek_tag( ber, &len );
 997
 998         if ( tag == LBER_ERROR ) {
 999                 ld->ld_errno = LDAP_DECODING_ERROR;
1000                 ber_free(ber, 1);
1001                 return( LBER_ERROR );
1002         }
1003
1004         *bp = ber;
1005         return tag;
1006 }
1007
1008
1009 static void
1010 merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
1011 {
1012 /*
1013  * Merge error information in "lr" with "parentr" error code and string.
1014  */
1015         if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
1016                 parentr->lr_res_errno = lr->lr_res_errno;
1017                 if ( lr->lr_res_error != NULL ) {
1018                         (void)ldap_append_referral( ld, &parentr->lr_res_error,
1019                             lr->lr_res_error );
1020                 }
1021         } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
1022                 parentr->lr_res_errno == LDAP_SUCCESS )
1023         {
1024                 parentr->lr_res_errno = lr->lr_res_errno;
1025                 if ( parentr->lr_res_error != NULL ) {
1026                         LDAP_FREE( parentr->lr_res_error );
1027                 }
1028                 parentr->lr_res_error = lr->lr_res_error;
1029                 lr->lr_res_error = NULL;
1030                 if ( LDAP_NAME_ERROR( lr->lr_res_errno ) ) {
1031                         if ( parentr->lr_res_matched != NULL ) {
1032                                 LDAP_FREE( parentr->lr_res_matched );
1033                         }
1034                         parentr->lr_res_matched = lr->lr_res_matched;
1035                         lr->lr_res_matched = NULL;
1036                 }
1037         }
1038
1039         Debug( LDAP_DEBUG_TRACE, "merged parent (id %d) error info:  ",
1040             parentr->lr_msgid, 0, 0 );
1041         Debug( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
1042             parentr->lr_res_errno, parentr->lr_res_error ?
1043             parentr->lr_res_error : "", parentr->lr_res_matched ?
1044             parentr->lr_res_matched : "" );
1045 }
1046
1047
1048
1049 int
1050 ldap_msgtype( LDAPMessage *lm )
1051 {
1052         assert( lm != NULL );
1053         return ( lm != NULL ) ? (int)lm->lm_msgtype : -1;
1054 }
1055
1056
1057 int
1058 ldap_msgid( LDAPMessage *lm )
1059 {
1060         assert( lm != NULL );
1061
1062         return ( lm != NULL ) ? lm->lm_msgid : -1;
1063 }
1064
1065
1066 char * ldap_int_msgtype2str( ber_tag_t tag )
1067 {
1068         switch( tag ) {
1069         case LDAP_RES_ADD: return "add";
1070         case LDAP_RES_BIND: return "bind";
1071         case LDAP_RES_COMPARE: return "compare";
1072         case LDAP_RES_DELETE: return "delete";
1073         case LDAP_RES_EXTENDED: return "extended-result";
1074         case LDAP_RES_INTERMEDIATE: return "intermediate";
1075         case LDAP_RES_MODIFY: return "modify";
1076         case LDAP_RES_RENAME: return "rename";
1077         case LDAP_RES_SEARCH_ENTRY: return "search-entry";
1078         case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
1079         case LDAP_RES_SEARCH_RESULT: return "search-result";
1080         }
1081         return "unknown";
1082 }
1083
1084 int
1085 ldap_msgfree( LDAPMessage *lm )
1086 {
1087         LDAPMessage     *next;
1088         int             type = 0;
1089
1090         Debug( LDAP_DEBUG_TRACE, "ldap_msgfree\n", 0, 0, 0 );
1091
1092         for ( ; lm != NULL; lm = next ) {
1093                 next = lm->lm_chain;
1094                 type = lm->lm_msgtype;
1095                 ber_free( lm->lm_ber, 1 );
1096                 LDAP_FREE( (char *) lm );
1097         }
1098
1099         return( type );
1100 }
1101
1102 /*
1103  * ldap_msgdelete - delete a message.  It returns:
1104  *      0       if the entire message was deleted
1105  *      -1      if the message was not found, or only part of it was found
1106  */
1107 int
1108 ldap_msgdelete( LDAP *ld, int msgid )
1109 {
1110         LDAPMessage     *lm, *prev;
1111         int rc = 0;
1112
1113         assert( ld != NULL );
1114
1115         Debug( LDAP_DEBUG_TRACE, "ldap_msgdelete\n", 0, 0, 0 );
1116
1117         prev = NULL;
1118 #ifdef LDAP_R_COMPILE
1119         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
1120 #endif
1121         for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
1122                 if ( lm->lm_msgid == msgid )
1123                         break;
1124                 prev = lm;
1125         }
1126
1127         if ( lm == NULL ) {
1128                 rc = -1;
1129         } else {
1130                 if ( prev == NULL )
1131                         ld->ld_responses = lm->lm_next;
1132                 else
1133                         prev->lm_next = lm->lm_next;
1134         }
1135 #ifdef LDAP_R_COMPILE
1136         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
1137 #endif
1138         if ( lm && ldap_msgfree( lm ) == LDAP_RES_SEARCH_ENTRY )
1139                 rc = -1;
1140
1141         return( rc );
1142 }
1143
1144
1145 /*
1146  * return 1 if message msgid is waiting to be abandoned, 0 otherwise
1147  */
1148 static int
1149 ldap_abandoned( LDAP *ld, ber_int_t msgid )
1150 {
1151         int     i;
1152
1153         if ( ld->ld_abandoned == NULL )
1154                 return( 0 );
1155
1156         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1157                 if ( ld->ld_abandoned[i] == msgid )
1158                         return( 1 );
1159
1160         return( 0 );
1161 }
1162
1163
1164 static int
1165 ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
1166 {
1167         int     i;
1168
1169         if ( ld->ld_abandoned == NULL )
1170                 return( -1 );
1171
1172         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1173                 if ( ld->ld_abandoned[i] == msgid )
1174                         break;
1175
1176         if ( ld->ld_abandoned[i] == -1 )
1177                 return( -1 );
1178
1179         for ( ; ld->ld_abandoned[i] != -1; i++ ) {
1180                 ld->ld_abandoned[i] = ld->ld_abandoned[i + 1];
1181         }
1182
1183         return( 0 );
1184 }