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