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

   1 /* result.c - wait for an ldap result */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2006 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1990 Regents of the University of Michigan.
  17  * All rights reserved.
  18  */
  19 /* This notice applies to changes, created by or for Novell, Inc.,
  20  * to preexisting works for which notices appear elsewhere in this file.
  21  *
  22  * Copyright (C) 1999, 2000 Novell, Inc. All Rights Reserved.
  23  *
  24  * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND TREATIES.
  25  * USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT TO VERSION
  26  * 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS AVAILABLE AT
  27  * HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE" IN THE
  28  * TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION OF THIS
  29  * WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP PUBLIC
  30  * LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT THE
  31  * PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
  32  *---
  33  * Modification to OpenLDAP source by Novell, Inc.
  34  * April 2000 sfs Add code to process V3 referrals and search results
  35  *---
  36  * Note: A verbatim copy of version 2.0.1 of the OpenLDAP Public License
  37  * can be found in the file "build/LICENSE-2.0.1" in this distribution
  38  * of OpenLDAP Software.
  39  */
  40 /* Portions Copyright (C) The Internet Society (1997)
  41  * ASN.1 fragments are from RFC 2251; see RFC for full legal notices.
  42  */
  43
  44 /*
  45  * LDAPv3 (RFC2251)
  46  *      LDAPResult ::= SEQUENCE {
  47  *              resultCode              ENUMERATED { ... },
  48  *              matchedDN               LDAPDN,
  49  *              errorMessage    LDAPString,
  50  *              referral                Referral OPTIONAL
  51  *      }
  52  *      Referral ::= SEQUENCE OF LDAPURL        (one or more)
  53  *      LDAPURL ::= LDAPString                          (limited to URL chars)
  54  */
  55
  56 #include "portable.h"
  57
  58 #include <stdio.h>
  59
  60 #include <ac/stdlib.h>
  61
  62 #include <ac/errno.h>
  63 #include <ac/socket.h>
  64 #include <ac/string.h>
  65 #include <ac/time.h>
  66 #include <ac/unistd.h>
  67
  68 #include "ldap-int.h"
  69 #include "ldap_log.h"
  70
  71 static int ldap_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
  72 static int ldap_mark_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
  73 static int wait4msg LDAP_P(( LDAP *ld, ber_int_t msgid, int all, struct timeval *timeout,
  74         LDAPMessage **result ));
  75 static ber_tag_t try_read1msg LDAP_P(( LDAP *ld, ber_int_t msgid,
  76         int all, LDAPConn **lc, LDAPMessage **result ));
  77 static ber_tag_t build_result_ber LDAP_P(( LDAP *ld, BerElement **bp, LDAPRequest *lr ));
  78 static void merge_error_info LDAP_P(( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr ));
  79 static LDAPMessage * chkResponseList LDAP_P(( LDAP *ld, int msgid, int all));
  80
  81 #define LDAP_MSG_X_KEEP_LOOKING         (-2)
  82
  83
  84 /*
  85  * ldap_result - wait for an ldap result response to a message from the
  86  * ldap server.  If msgid is LDAP_RES_ANY (-1), any message will be
  87  * accepted.  If msgid is LDAP_RES_UNSOLICITED (0), any unsolicited
  88  * message is accepted.  Otherwise ldap_result will wait for a response
  89  * with msgid.  If all is LDAP_MSG_ONE (0) the first message with id
  90  * msgid will be accepted, otherwise, ldap_result will wait for all
  91  * responses with id msgid and then return a pointer to the entire list
  92  * of messages.  In general, this is only useful for search responses,
  93  * which can be of three message types (zero or more entries, zero or
  94  * search references, followed by an ldap result).  An extension to
  95  * LDAPv3 allows partial extended responses to be returned in response
  96  * to any request.  The type of the first message received is returned.
  97  * When waiting, any messages that have been abandoned are discarded.
  98  *
  99  * Example:
 100  *      ldap_result( s, msgid, all, timeout, result )
 101  */
 102 int
 103 ldap_result(
 104         LDAP *ld,
 105         int msgid,
 106         int all,
 107         struct timeval *timeout,
 108         LDAPMessage **result )
 109 {
 110         LDAPMessage     *lm;
 111         int     rc;
 112
 113         assert( ld != NULL );
 114         assert( result != NULL );
 115
 116         Debug( LDAP_DEBUG_TRACE, "ldap_result ld %p msgid %d\n", (void *)ld, msgid, 0 );
 117
 118 #ifdef LDAP_R_COMPILE
 119         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
 120 #endif
 121         lm = chkResponseList(ld, msgid, all);
 122
 123         if ( lm == NULL ) {
 124                 rc = wait4msg( ld, msgid, all, timeout, result );
 125         } else {
 126                 *result = lm;
 127                 ld->ld_errno = LDAP_SUCCESS;
 128                 rc = lm->lm_msgtype;
 129         }
 130 #ifdef LDAP_R_COMPILE
 131         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
 132 #endif
 133         return( rc );
 134 }
 135
 136 static LDAPMessage *
 137 chkResponseList(
 138         LDAP *ld,
 139         int msgid,
 140         int all)
 141 {
 142         LDAPMessage     *lm, **lastlm, *nextlm;
 143
 144         /*
 145          * Look through the list of responses we have received on
 146          * this association and see if the response we're interested in
 147          * is there.  If it is, return it.  If not, call wait4msg() to
 148          * wait until it arrives or timeout occurs.
 149          */
 150
 151 #ifdef LDAP_R_COMPILE
 152         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 153 #endif
 154
 155         Debug( LDAP_DEBUG_TRACE,
 156                 "ldap_chkResponseList ld %p msgid %d all %d\n",
 157                 (void *)ld, msgid, all );
 158
 159         lastlm = &ld->ld_responses;
 160         for ( lm = ld->ld_responses; lm != NULL; lm = nextlm ) {
 161                 nextlm = lm->lm_next;
 162
 163                 if ( ldap_abandoned( ld, lm->lm_msgid ) ) {
 164                         Debug( LDAP_DEBUG_TRACE,
 165                                 "ldap_chkResponseList msg abandoned, msgid %d\n",
 166                             msgid, 0, 0 );
 167                         ldap_mark_abandoned( ld, lm->lm_msgid );
 168
 169                         /* Remove this entry from list */
 170                         *lastlm = nextlm;
 171
 172                         ldap_msgfree( lm );
 173
 174                         continue;
 175                 }
 176
 177                 if ( msgid == LDAP_RES_ANY || lm->lm_msgid == msgid ) {
 178                         LDAPMessage     *tmp;
 179
 180                         if ( all == LDAP_MSG_ONE || all == LDAP_MSG_RECEIVED ||
 181                                 msgid == LDAP_RES_UNSOLICITED ) {
 182                                 break;
 183                         }
 184
 185                         tmp = lm->lm_chain_tail;
 186                         if ((tmp->lm_msgtype == LDAP_RES_SEARCH_ENTRY) ||
 187                                 (tmp->lm_msgtype == LDAP_RES_SEARCH_REFERENCE) ||
 188                                 (tmp->lm_msgtype == LDAP_RES_INTERMEDIATE)) {
 189                                 tmp = NULL;
 190                         }
 191
 192                         if ( tmp == NULL ) {
 193                                 lm = NULL;
 194                         }
 195
 196                         break;
 197                 }
 198                 lastlm = &lm->lm_next;
 199         }
 200
 201     if ( lm != NULL ) {
 202                 /* Found an entry, remove it from the list */
 203             if ( all == LDAP_MSG_ONE && lm->lm_chain != NULL ) {
 204                         *lastlm = lm->lm_chain;
 205                         lm->lm_chain->lm_next = lm->lm_next;
 206                         lm->lm_chain->lm_chain_tail = ( lm->lm_chain_tail != lm ) ? lm->lm_chain_tail : lm->lm_chain;
 207                         lm->lm_chain = NULL;
 208                         lm->lm_chain_tail = NULL;
 209             } else {
 210                         *lastlm = lm->lm_next;
 211                 }
 212             lm->lm_next = NULL;
 213     }
 214
 215 #ifdef LDAP_DEBUG
 216         if( lm == NULL) {
 217                 Debug( LDAP_DEBUG_TRACE,
 218                         "ldap_chkResponseList returns ld %p NULL\n", (void *)ld, 0, 0);
 219         } else {
 220                 Debug( LDAP_DEBUG_TRACE,
 221                         "ldap_chkResponseList returns ld %p msgid %d, type 0x%02lu\n",
 222                         (void *)ld, lm->lm_msgid, (unsigned long) lm->lm_msgtype);
 223         }
 224 #endif
 225     return lm;
 226 }
 227
 228 static int
 229 wait4msg(
 230         LDAP *ld,
 231         ber_int_t msgid,
 232         int all,
 233         struct timeval *timeout,
 234         LDAPMessage **result )
 235 {
 236         int             rc;
 237         struct timeval  tv = { 0 },
 238                         tv0 = { 0 },
 239                         *tvp;
 240         time_t          start_time = 0;
 241         time_t          tmp_time;
 242         LDAPConn        *lc, *nextlc;
 243
 244         assert( ld != NULL );
 245         assert( result != NULL );
 246
 247 #ifdef LDAP_R_COMPILE
 248         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 249 #endif
 250
 251 #ifdef LDAP_DEBUG
 252         if ( timeout == NULL ) {
 253                 Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (infinite timeout)\n",
 254                         (void *)ld, msgid, 0 );
 255         } else {
 256                 Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (timeout %ld usec)\n",
 257                         (void *)ld, msgid, (long)timeout->tv_sec * 1000000 + timeout->tv_usec );
 258         }
 259 #endif /* LDAP_DEBUG */
 260
 261         if ( timeout == NULL ) {
 262                 tvp = NULL;
 263         } else {
 264                 tv0 = *timeout;
 265                 tv = *timeout;
 266                 tvp = &tv;
 267                 start_time = time( NULL );
 268         }
 269
 270         rc = LDAP_MSG_X_KEEP_LOOKING;
 271         while ( rc == LDAP_MSG_X_KEEP_LOOKING ) {
 272 #ifdef LDAP_DEBUG
 273                 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
 274                         Debug( LDAP_DEBUG_TRACE, "wait4msg continue ld %p msgid %d all %d\n",
 275                                 (void *)ld, msgid, all );
 276                         ldap_dump_connection( ld, ld->ld_conns, 1 );
 277                         ldap_dump_requests_and_responses( ld );
 278                 }
 279 #endif /* LDAP_DEBUG */
 280
 281                 if ( (*result = chkResponseList(ld, msgid, all)) != NULL ) {
 282                         rc = (*result)->lm_msgtype;
 283
 284                 } else {
 285                         int lc_ready = 0;
 286
 287 #ifdef LDAP_R_COMPILE
 288                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 289 #endif
 290                         for ( lc = ld->ld_conns; lc != NULL; lc = nextlc ) {
 291                                 nextlc = lc->lconn_next;
 292                                 if ( ber_sockbuf_ctrl( lc->lconn_sb,
 293                                                 LBER_SB_OPT_DATA_READY, NULL ) ) {
 294 #ifdef LDAP_R_COMPILE
 295                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 296 #endif
 297                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 298 #ifdef LDAP_R_COMPILE
 299                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 300 #endif
 301                                         lc_ready = 1;
 302                                         break;
 303                                 }
 304                         }
 305 #ifdef LDAP_R_COMPILE
 306                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 307 #endif
 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 = LDAP_MSG_X_KEEP_LOOKING;   /* select interrupted: loop */
 330                                 } else {
 331                                         rc = LDAP_MSG_X_KEEP_LOOKING;
 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                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 345 #endif
 346                                         for ( lc = ld->ld_conns; rc == LDAP_MSG_X_KEEP_LOOKING && lc != NULL;
 347                                                 lc = nextlc )
 348                                         {
 349                                                 nextlc = lc->lconn_next;
 350                                                 if ( lc->lconn_status == LDAP_CONNST_CONNECTED &&
 351                                                         ldap_is_read_ready( ld, lc->lconn_sb ))
 352                                                 {
 353 #ifdef LDAP_R_COMPILE
 354                                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 355 #endif
 356                                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 357                                                                 if ( lc == NULL ) lc = nextlc;
 358 #ifdef LDAP_R_COMPILE
 359                                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 360 #endif
 361                                                 }
 362                                         }
 363 #ifdef LDAP_R_COMPILE
 364                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 365 #endif
 366                                 }
 367                         }
 368                 }
 369
 370                 if ( rc == LDAP_MSG_X_KEEP_LOOKING && tvp != NULL ) {
 371                         tmp_time = time( NULL );
 372                         tv0.tv_sec -= ( tmp_time - start_time );
 373                         if ( tv0.tv_sec <= 0 ) {
 374                                 rc = 0; /* timed out */
 375                                 ld->ld_errno = LDAP_TIMEOUT;
 376                                 break;
 377                         }
 378                         tv.tv_sec = tv0.tv_sec;
 379
 380                         Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p %ld secs to go\n",
 381                                 (void *)ld, (long) tv.tv_sec, 0 );
 382                         start_time = tmp_time;
 383                 }
 384         }
 385
 386         return( rc );
 387 }
 388
 389
 390 static ber_tag_t
 391 try_read1msg(
 392         LDAP *ld,
 393         ber_int_t msgid,
 394         int all,
 395         LDAPConn **lcp,
 396         LDAPMessage **result )
 397 {
 398         BerElement      *ber;
 399         LDAPMessage     *newmsg, *l, *prev;
 400         ber_int_t       id;
 401         ber_tag_t       tag;
 402         ber_len_t       len;
 403         int             foundit = 0;
 404         LDAPRequest     *lr, *tmplr;
 405         LDAPConn        *lc;
 406         BerElement      tmpber;
 407         int             rc, refer_cnt, hadref, simple_request;
 408         ber_int_t       lderr;
 409
 410 #ifdef LDAP_CONNECTIONLESS
 411         LDAPMessage     *tmp = NULL, *chain_head = NULL;
 412         int             moremsgs = 0, isv2 = 0;
 413 #endif
 414
 415         /*
 416          * v3ref = flag for V3 referral / search reference
 417          * 0 = not a ref, 1 = sucessfully chased ref, -1 = pass ref to application
 418          */
 419         enum {
 420                 V3REF_NOREF     = 0,
 421                 V3REF_SUCCESS   = 1,
 422                 V3REF_TOAPP     = -1
 423         }       v3ref;
 424
 425         assert( ld != NULL );
 426         assert( lcp != NULL );
 427         assert( *lcp != NULL );
 428
 429 #ifdef LDAP_R_COMPILE
 430         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 431 #endif
 432
 433         Debug( LDAP_DEBUG_TRACE, "read1msg: ld %p msgid %d all %d\n",
 434                 (void *)ld, msgid, all );
 435
 436         lc = *lcp;
 437
 438 retry:
 439         if ( lc->lconn_ber == NULL ) {
 440                 lc->lconn_ber = ldap_alloc_ber_with_options(ld);
 441
 442                 if( lc->lconn_ber == NULL ) {
 443                         return -1;
 444                 }
 445         }
 446
 447         ber = lc->lconn_ber;
 448         assert( LBER_VALID (ber) );
 449
 450         /* get the next message */
 451         errno = 0;
 452 #ifdef LDAP_CONNECTIONLESS
 453         if ( LDAP_IS_UDP(ld) ) {
 454                 struct sockaddr from;
 455                 ber_int_sb_read( lc->lconn_sb, &from, sizeof(struct sockaddr) );
 456                 if (ld->ld_options.ldo_version == LDAP_VERSION2) isv2=1;
 457         }
 458 nextresp3:
 459 #endif
 460         tag = ber_get_next( lc->lconn_sb, &len, ber );
 461         switch ( tag ) {
 462         case LDAP_TAG_MESSAGE:
 463                 /*
 464                  * We read a complete message.
 465                  * The connection should no longer need this ber.
 466                  */
 467                 lc->lconn_ber = NULL;
 468                 break;
 469
 470         case LBER_DEFAULT:
 471 #ifdef LDAP_DEBUG
 472                 Debug( LDAP_DEBUG_CONNS,
 473                         "ber_get_next failed.\n", 0, 0, 0 );
 474 #endif
 475 #ifdef EWOULDBLOCK
 476                 if ( errno == EWOULDBLOCK ) return LDAP_MSG_X_KEEP_LOOKING;
 477 #endif
 478 #ifdef EAGAIN
 479                 if ( errno == EAGAIN ) return LDAP_MSG_X_KEEP_LOOKING;
 480 #endif
 481                 ld->ld_errno = LDAP_SERVER_DOWN;
 482                 return -1;
 483
 484         default:
 485                 ld->ld_errno = LDAP_LOCAL_ERROR;
 486                 return -1;
 487         }
 488
 489         /* message id */
 490         if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
 491                 ber_free( ber, 1 );
 492                 ld->ld_errno = LDAP_DECODING_ERROR;
 493                 return( -1 );
 494         }
 495
 496         /* if it's been abandoned, toss it */
 497         if ( ldap_abandoned( ld, id ) ) {
 498                 Debug( LDAP_DEBUG_ANY, "abandoned ld %p msgid %ld\n",
 499                         (void *)ld, (long) id, 0);
 500 retry_ber:
 501                 ber_free( ber, 1 );
 502                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 503                         goto retry;
 504                 }
 505                 return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
 506         }
 507
 508         lr = ldap_find_request_by_msgid( ld, id );
 509         if ( lr == NULL ) {
 510                 Debug( LDAP_DEBUG_ANY,
 511                         "no request for response on ld %p msgid %ld (tossing)\n",
 512                         (void *)ld, (long) id, 0 );
 513                 goto retry_ber;
 514         }
 515 #ifdef LDAP_CONNECTIONLESS
 516         if (LDAP_IS_UDP(ld) && isv2) {
 517                 ber_scanf(ber, "x{");
 518         }
 519 nextresp2:
 520 #endif
 521         /* the message type */
 522         if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
 523                 ld->ld_errno = LDAP_DECODING_ERROR;
 524                 ber_free( ber, 1 );
 525                 return( -1 );
 526         }
 527
 528         Debug( LDAP_DEBUG_TRACE,
 529                 "read1msg: ld %p msgid %ld message type %s\n",
 530                 (void *)ld, (long) lr->lr_msgid, ldap_int_msgtype2str( tag ));
 531
 532         id = lr->lr_origid;
 533         refer_cnt = 0;
 534         hadref = simple_request = 0;
 535         rc = LDAP_MSG_X_KEEP_LOOKING;   /* default is to keep looking (no response found) */
 536         lr->lr_res_msgtype = tag;
 537
 538         /*
 539          * This code figures out if we are going to chase a
 540          * referral / search reference, or pass it back to the application
 541          */
 542         v3ref = V3REF_NOREF;    /* Assume not a V3 search reference/referral */
 543         if( (tag != LDAP_RES_SEARCH_ENTRY) && (ld->ld_version > LDAP_VERSION2) ) {
 544                 BerElement      tmpber = *ber;  /* struct copy */
 545                 char **refs = NULL;
 546
 547                 if( tag == LDAP_RES_SEARCH_REFERENCE ) {
 548                         /* This is a V3 search reference */
 549                         /* Assume we do not chase the reference,
 550                          * but pass it to application */
 551                         v3ref = V3REF_TOAPP;
 552                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
 553                                         (lr->lr_parent != NULL) )
 554                         {
 555                                 /* Get the referral list */
 556                                 if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
 557                                         rc = LDAP_DECODING_ERROR;
 558                                 } else {
 559                                         /* Note: refs array is freed by ldap_chase_v3referrals */
 560                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 561                                             1, &lr->lr_res_error, &hadref );
 562                                         if ( refer_cnt > 0 ) {
 563                                                 /* sucessfully chased reference */
 564                                                 /* If haven't got end search, set chasing referrals */
 565                                                 if( lr->lr_status != LDAP_REQST_COMPLETED) {
 566                                                         lr->lr_status = LDAP_REQST_CHASINGREFS;
 567                                                         Debug( LDAP_DEBUG_TRACE,
 568                                                                 "read1msg:  search ref chased, "
 569                                                                 "mark request chasing refs, "
 570                                                                 "id = %d\n",
 571                                                                 lr->lr_msgid, 0, 0);
 572                                                 }
 573
 574                                                 /* We sucessfully chased the reference */
 575                                                 v3ref = V3REF_SUCCESS;
 576                                         }
 577                                 }
 578                         }
 579                 } else {
 580                         /* Check for V3 referral */
 581                         ber_len_t       len;
 582                         char            *lr_res_error = NULL;
 583
 584                         if ( ber_scanf( &tmpber, "{eAA",/*}*/ &lderr,
 585                                     &lr->lr_res_matched, &lr_res_error )
 586                                     != LBER_ERROR )
 587                         {
 588                                 if ( lr_res_error != NULL ) {
 589                                         {
 590                                                 if ( lr->lr_res_error != NULL ) {
 591                                                         (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 592                                                         LDAP_FREE( (char *)lr_res_error );
 593
 594                                                 } else {
 595                                                         lr->lr_res_error = lr_res_error;
 596                                                 }
 597                                         }
 598                                         lr_res_error = NULL;
 599                                 }
 600
 601                                 /* Check if V3 referral */
 602                                 if ( ber_peek_tag( &tmpber, &len ) == LDAP_TAG_REFERRAL ) {
 603                                         /* We have a V3 referral, assume we cannot chase it */
 604                                         v3ref = V3REF_TOAPP;
 605                                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS)
 606                                                          || (lr->lr_parent != NULL) )
 607                                         {
 608                                                 /* Assume referral not chased and return it to app */
 609                                                 v3ref = V3REF_TOAPP;
 610
 611                                                 /* Get the referral list */
 612                                                 if( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
 613                                                         rc = LDAP_DECODING_ERROR;
 614                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 615                                                         Debug( LDAP_DEBUG_TRACE,
 616                                                                 "read1msg: referral decode error, mark request completed, ld %p msgid %d\n",
 617                                                                 (void *)ld, lr->lr_msgid, 0);
 618                                                 } else {
 619                                                         /* Chase the referral
 620                                                          * Note: refs arrary is freed by ldap_chase_v3referrals
 621                                                          */
 622                                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 623                                                             0, &lr->lr_res_error, &hadref );
 624                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 625                                                         Debug( LDAP_DEBUG_TRACE,
 626                                                                 "read1msg: referral chased, mark request completed, ld %p msgid %d\n",
 627                                                                 (void *)ld, lr->lr_msgid, 0);
 628                                                         if( refer_cnt > 0) {
 629                                                                 /* Referral successfully chased */
 630                                                                 v3ref = V3REF_SUCCESS;
 631                                                         }
 632                                                 }
 633                                         }
 634                                 }
 635
 636                                 if( lr->lr_res_matched != NULL ) {
 637                                         LDAP_FREE( lr->lr_res_matched );
 638                                         lr->lr_res_matched = NULL;
 639                                 }
 640                                 if( lr->lr_res_error != NULL ) {
 641                                         LDAP_FREE( lr->lr_res_error );
 642                                         lr->lr_res_error = NULL;
 643                                 }
 644                         }
 645                 }
 646         }
 647
 648         /* All results that just return a status, i.e. don't return data
 649          * go through the following code.  This code also chases V2 referrals
 650          * and checks if all referrals have been chased.
 651          */
 652         if ( (tag != LDAP_RES_SEARCH_ENTRY) && (v3ref != V3REF_TOAPP) &&
 653                 (tag != LDAP_RES_INTERMEDIATE ))
 654         {
 655                 /* For a v3 search referral/reference, only come here if already chased it */
 656                 if ( ld->ld_version >= LDAP_VERSION2 &&
 657                         ( lr->lr_parent != NULL ||
 658                         LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ) )
 659                 {
 660                         char            *lr_res_error = NULL;
 661
 662                         tmpber = *ber;  /* struct copy */
 663                         if ( v3ref == V3REF_SUCCESS ) {
 664                                 /* V3 search reference or V3 referral
 665                                  * sucessfully chased. If this message
 666                                  * is a search result, then it has no more
 667                                  * outstanding referrals.
 668                                  */
 669                                 if ( tag == LDAP_RES_SEARCH_RESULT )
 670                                         refer_cnt = 0;
 671                         } else if ( ber_scanf( &tmpber, "{eAA}", &lderr,
 672                                 &lr->lr_res_matched, &lr_res_error )
 673                                 != LBER_ERROR )
 674                         {
 675                                 if ( lr_res_error != NULL ) {
 676                                         {
 677                                                 if ( lr->lr_res_error != NULL ) {
 678                                                         (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 679                                                         LDAP_FREE( (char *)lr_res_error );
 680                                                 } else {
 681                                                         lr->lr_res_error = lr_res_error;
 682                                                 }
 683                                         }
 684                                         lr_res_error = NULL;
 685                                 }
 686
 687                                 switch ( lderr ) {
 688                                 case LDAP_SUCCESS:
 689                                 case LDAP_COMPARE_TRUE:
 690                                 case LDAP_COMPARE_FALSE:
 691                                         break;
 692
 693                                 default:
 694                                         if ( lr->lr_res_error == NULL
 695                                                 || lr->lr_res_error[ 0 ] == '\0' )
 696                                         {
 697                                                 break;
 698                                         }
 699
 700                                         /* referrals are in error string */
 701                                         refer_cnt = ldap_chase_referrals( ld, lr,
 702                                                 &lr->lr_res_error, -1, &hadref );
 703                                         lr->lr_status = LDAP_REQST_COMPLETED;
 704                                         Debug( LDAP_DEBUG_TRACE,
 705                                                 "read1msg:  V2 referral chased, "
 706                                                 "mark request completed, id = %d\n",
 707                                                 lr->lr_msgid, 0, 0 );
 708                                         break;
 709                                 }
 710
 711                                 /* save errno, message, and matched string */
 712                                 if ( !hadref || lr->lr_res_error == NULL ) {
 713                                         lr->lr_res_errno = ( lderr ==
 714                                         LDAP_PARTIAL_RESULTS ) ? LDAP_SUCCESS
 715                                         : lderr;
 716                                 } else if ( ld->ld_errno != LDAP_SUCCESS ) {
 717                                         lr->lr_res_errno = ld->ld_errno;
 718                                 } else {
 719                                         lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
 720                                 }
 721
 722                                 Debug( LDAP_DEBUG_TRACE, "new result:  "
 723                                         "res_errno: %d, "
 724                                         "res_error: <%s>, "
 725                                         "res_matched: <%s>\n",
 726                                         lr->lr_res_errno,
 727                                         lr->lr_res_error ? lr->lr_res_error : "",
 728                                         lr->lr_res_matched ? lr->lr_res_matched : "" );
 729                         }
 730
 731                         /* in any case, don't leave any lr_res_error 'round */
 732                         if ( lr_res_error ) {
 733                                 LDAP_FREE( lr_res_error );
 734                         }
 735                 }
 736
 737                 Debug( LDAP_DEBUG_TRACE,
 738                         "read1msg: ld %p %d new referrals\n",
 739                         (void *)ld, refer_cnt, 0 );
 740
 741                 if ( refer_cnt != 0 ) { /* chasing referrals */
 742                         ber_free( ber, 1 );
 743                         ber = NULL;
 744                         if ( refer_cnt < 0 ) {
 745                                 return( -1 );   /* fatal error */
 746                         }
 747                         lr->lr_res_errno = LDAP_SUCCESS; /* sucessfully chased referral */
 748                 } else {
 749                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
 750                                 /* request without any referrals */
 751                                 simple_request = ( hadref ? 0 : 1 );
 752                         } else {
 753                                 /* request with referrals or child request */
 754                                 ber_free( ber, 1 );
 755                                 ber = NULL;
 756                         }
 757
 758                         lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
 759                         Debug( LDAP_DEBUG_TRACE,
 760                                 "read1msg:  mark request completed, ld %p msgid %d\n",
 761                                 (void *)ld, lr->lr_msgid, 0);
 762                         while ( lr->lr_parent != NULL ) {
 763                                 merge_error_info( ld, lr->lr_parent, lr );
 764
 765                                 lr = lr->lr_parent;
 766                                 if ( --lr->lr_outrefcnt > 0 ) {
 767                                         break;  /* not completely done yet */
 768                                 }
 769                         }
 770
 771                         /* Check if all requests are finished, lr is now parent */
 772                         tmplr = lr;
 773                         if (tmplr->lr_status == LDAP_REQST_COMPLETED) {
 774                                 for ( tmplr=lr->lr_child;
 775                                         tmplr != NULL;
 776                                         tmplr=tmplr->lr_refnext)
 777                                 {
 778                                         if( tmplr->lr_status != LDAP_REQST_COMPLETED) break;
 779                                 }
 780                         }
 781
 782                         /* This is the parent request if the request has referrals */
 783                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL &&
 784                                 tmplr == NULL )
 785                         {
 786                                 id = lr->lr_msgid;
 787                                 tag = lr->lr_res_msgtype;
 788                                 Debug( LDAP_DEBUG_ANY, "request done: ld %p msgid %ld\n",
 789                                         (void *)ld, (long) id, 0 );
 790 Debug( LDAP_DEBUG_TRACE,
 791 "res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 792 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 793 lr->lr_res_matched ? lr->lr_res_matched : "" );
 794                                 if ( !simple_request ) {
 795                                         ber_free( ber, 1 );
 796                                         ber = NULL;
 797                                         if ( build_result_ber( ld, &ber, lr )
 798                                             == LBER_ERROR )
 799                                         {
 800                                                 rc = -1; /* fatal error */
 801                                         }
 802                                 }
 803
 804 #ifdef LDAP_R_COMPILE
 805                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 806 #endif
 807                                 ldap_free_request( ld, lr );
 808 #ifdef LDAP_R_COMPILE
 809                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 810 #endif
 811                         }
 812
 813                         if ( lc != NULL ) {
 814 #ifdef LDAP_R_COMPILE
 815                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 816 #endif
 817                                 ldap_free_connection( ld, lc, 0, 1 );
 818 #ifdef LDAP_R_COMPILE
 819                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 820 #endif
 821                                 lc = *lcp = NULL;
 822                         }
 823                 }
 824         }
 825
 826         if ( ber == NULL ) {
 827                 return( rc );
 828         }
 829
 830         /* make a new ldap message */
 831         newmsg = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) );
 832         if ( newmsg == NULL ) {
 833                 ld->ld_errno = LDAP_NO_MEMORY;
 834                 return( -1 );
 835         }
 836         newmsg->lm_msgid = (int)id;
 837         newmsg->lm_msgtype = tag;
 838         newmsg->lm_ber = ber;
 839         newmsg->lm_chain_tail = newmsg;
 840
 841 #ifdef LDAP_CONNECTIONLESS
 842         /* CLDAP replies all fit in a single datagram. In LDAPv2 RFC1798
 843          * the responses are all a sequence wrapped in one message. In
 844          * LDAPv3 each response is in its own message. The datagram must
 845          * end with a SearchResult. We can't just parse each response in
 846          * separate calls to try_read1msg because the header info is only
 847          * present at the beginning of the datagram, not at the beginning
 848          * of each response. So parse all the responses at once and queue
 849          * them up, then pull off the first response to return to the
 850          * caller when all parsing is complete.
 851          */
 852         if ( LDAP_IS_UDP(ld) ) {
 853                 /* If not a result, look for more */
 854                 if ( tag != LDAP_RES_SEARCH_RESULT ) {
 855                         int ok = 0;
 856                         moremsgs = 1;
 857                         if (isv2) {
 858                                 /* LDAPv2: dup the current ber, skip past the current
 859                                  * response, and see if there are any more after it.
 860                                  */
 861                                 ber = ber_dup( ber );
 862                                 ber_scanf( ber, "x" );
 863                                 if (ber_peek_tag(ber, &len) != LBER_DEFAULT) {
 864                                         /* There's more - dup the ber buffer so they can all be
 865                                          * individually freed by ldap_msgfree.
 866                                          */
 867                                         struct berval bv;
 868                                         ber_get_option(ber, LBER_OPT_BER_REMAINING_BYTES, &len);
 869                                         bv.bv_val = LDAP_MALLOC(len);
 870                                         if (bv.bv_val) {
 871                                                 ok=1;
 872                                                 ber_read(ber, bv.bv_val, len);
 873                                                 bv.bv_len = len;
 874                                                 ber_init2(ber, &bv, ld->ld_lberoptions );
 875                                         }
 876                                 }
 877                         } else {
 878                                 /* LDAPv3: Just allocate a new ber. Since this is a buffered
 879                                  * datagram, if the sockbuf is readable we still have data
 880                                  * to parse.
 881                                  */
 882                                 ber = ldap_alloc_ber_with_options( ld );
 883                                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) ok = 1;
 884                         }
 885                         /* set up response chain */
 886                         if ( tmp == NULL ) {
 887                                 newmsg->lm_next = ld->ld_responses;
 888                                 ld->ld_responses = newmsg;
 889                                 chain_head = newmsg;
 890                         } else {
 891                                 tmp->lm_chain = newmsg;
 892                         }
 893                         chain_head->lm_chain_tail = newmsg;
 894                         tmp = newmsg;
 895                         /* "ok" means there's more to parse */
 896                         if (ok) {
 897                                 if (isv2) goto nextresp2;
 898                                 else goto nextresp3;
 899                         } else {
 900                                 /* got to end of datagram without a SearchResult. Free
 901                                  * our dup'd ber, but leave any buffer alone. For v2 case,
 902                                  * the previous response is still using this buffer. For v3,
 903                                  * the new ber has no buffer to free yet.
 904                                  */
 905                                 ber_free(ber, 0);
 906                                 return -1;
 907                         }
 908                 } else if ( moremsgs ) {
 909                 /* got search result, and we had multiple responses in 1 datagram.
 910                  * stick the result onto the end of the chain, and then pull the
 911                  * first response off the head of the chain.
 912                  */
 913                         tmp->lm_chain = newmsg;
 914                         chain_head->lm_chain_tail = newmsg;
 915                         *result = chkResponseList( ld, msgid, all );
 916                         ld->ld_errno = LDAP_SUCCESS;
 917                         return( (*result)->lm_msgtype );
 918                 }
 919         }
 920 #endif /* LDAP_CONNECTIONLESS */
 921
 922         /* is this the one we're looking for? */
 923         if ( msgid == LDAP_RES_ANY || id == msgid ) {
 924                 if ( all == LDAP_MSG_ONE
 925                     || (newmsg->lm_msgtype != LDAP_RES_SEARCH_RESULT
 926                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 927                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_REFERENCE) ) {
 928                         *result = newmsg;
 929                         ld->ld_errno = LDAP_SUCCESS;
 930                         return( tag );
 931                 } else if ( newmsg->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
 932                         foundit = 1;    /* return the chain later */
 933                 }
 934         }
 935
 936         /*
 937          * if not, we must add it to the list of responses.  if
 938          * the msgid is already there, it must be part of an existing
 939          * search response.
 940          */
 941
 942         prev = NULL;
 943         for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
 944                 if ( l->lm_msgid == newmsg->lm_msgid )
 945                         break;
 946                 prev = l;
 947         }
 948
 949         /* not part of an existing search response */
 950         if ( l == NULL ) {
 951                 if ( foundit ) {
 952                         *result = newmsg;
 953                         goto exit;
 954                 }
 955
 956                 newmsg->lm_next = ld->ld_responses;
 957                 ld->ld_responses = newmsg;
 958                 goto exit;
 959         }
 960
 961         Debug( LDAP_DEBUG_TRACE, "adding response ld %p msgid %ld type %ld:\n",
 962                 (void *)ld, (long) newmsg->lm_msgid, (long) newmsg->lm_msgtype );
 963
 964         /* part of a search response - add to end of list of entries */
 965         l->lm_chain_tail->lm_chain = newmsg;
 966         l->lm_chain_tail = newmsg;
 967
 968         /* return the whole chain if that's what we were looking for */
 969         if ( foundit ) {
 970                 if ( prev == NULL )
 971                         ld->ld_responses = l->lm_next;
 972                 else
 973                         prev->lm_next = l->lm_next;
 974                 *result = l;
 975         }
 976
 977 exit:
 978         if ( foundit ) {
 979                 ld->ld_errno = LDAP_SUCCESS;
 980                 return( tag );
 981         }
 982         if ( lc && ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 983                 goto retry;
 984         }
 985         return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
 986 }
 987
 988
 989 static ber_tag_t
 990 build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
 991 {
 992         ber_len_t       len;
 993         ber_tag_t       tag;
 994         ber_int_t       along;
 995         BerElement *ber;
 996
 997         *bp = NULL;
 998         ber = ldap_alloc_ber_with_options( ld );
 999
1000         if( ber == NULL ) {
1001                 ld->ld_errno = LDAP_NO_MEMORY;
1002                 return LBER_ERROR;
1003         }
1004
1005         if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
1006                 lr->lr_res_msgtype, lr->lr_res_errno,
1007                 lr->lr_res_matched ? lr->lr_res_matched : "",
1008                 lr->lr_res_error ? lr->lr_res_error : "" ) == -1 )
1009         {
1010                 ld->ld_errno = LDAP_ENCODING_ERROR;
1011                 ber_free(ber, 1);
1012                 return( LBER_ERROR );
1013         }
1014
1015         ber_reset( ber, 1 );
1016
1017         if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
1018                 ld->ld_errno = LDAP_DECODING_ERROR;
1019                 ber_free(ber, 1);
1020                 return( LBER_ERROR );
1021         }
1022
1023         if ( ber_get_enum( ber, &along ) == LBER_ERROR ) {
1024                 ld->ld_errno = LDAP_DECODING_ERROR;
1025                 ber_free(ber, 1);
1026                 return( LBER_ERROR );
1027         }
1028
1029         tag = ber_peek_tag( ber, &len );
1030
1031         if ( tag == LBER_ERROR ) {
1032                 ld->ld_errno = LDAP_DECODING_ERROR;
1033                 ber_free(ber, 1);
1034                 return( LBER_ERROR );
1035         }
1036
1037         *bp = ber;
1038         return tag;
1039 }
1040
1041
1042 static void
1043 merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
1044 {
1045 /*
1046  * Merge error information in "lr" with "parentr" error code and string.
1047  */
1048         if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
1049                 parentr->lr_res_errno = lr->lr_res_errno;
1050                 if ( lr->lr_res_error != NULL ) {
1051                         (void)ldap_append_referral( ld, &parentr->lr_res_error,
1052                             lr->lr_res_error );
1053                 }
1054         } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
1055                 parentr->lr_res_errno == LDAP_SUCCESS )
1056         {
1057                 parentr->lr_res_errno = lr->lr_res_errno;
1058                 if ( parentr->lr_res_error != NULL ) {
1059                         LDAP_FREE( parentr->lr_res_error );
1060                 }
1061                 parentr->lr_res_error = lr->lr_res_error;
1062                 lr->lr_res_error = NULL;
1063                 if ( LDAP_NAME_ERROR( lr->lr_res_errno ) ) {
1064                         if ( parentr->lr_res_matched != NULL ) {
1065                                 LDAP_FREE( parentr->lr_res_matched );
1066                         }
1067                         parentr->lr_res_matched = lr->lr_res_matched;
1068                         lr->lr_res_matched = NULL;
1069                 }
1070         }
1071
1072         Debug( LDAP_DEBUG_TRACE, "merged parent (id %d) error info:  ",
1073             parentr->lr_msgid, 0, 0 );
1074         Debug( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
1075             parentr->lr_res_errno, parentr->lr_res_error ?
1076             parentr->lr_res_error : "", parentr->lr_res_matched ?
1077             parentr->lr_res_matched : "" );
1078 }
1079
1080
1081
1082 int
1083 ldap_msgtype( LDAPMessage *lm )
1084 {
1085         assert( lm != NULL );
1086         return ( lm != NULL ) ? (int)lm->lm_msgtype : -1;
1087 }
1088
1089
1090 int
1091 ldap_msgid( LDAPMessage *lm )
1092 {
1093         assert( lm != NULL );
1094
1095         return ( lm != NULL ) ? lm->lm_msgid : -1;
1096 }
1097
1098
1099 char * ldap_int_msgtype2str( ber_tag_t tag )
1100 {
1101         switch( tag ) {
1102         case LDAP_RES_ADD: return "add";
1103         case LDAP_RES_BIND: return "bind";
1104         case LDAP_RES_COMPARE: return "compare";
1105         case LDAP_RES_DELETE: return "delete";
1106         case LDAP_RES_EXTENDED: return "extended-result";
1107         case LDAP_RES_INTERMEDIATE: return "intermediate";
1108         case LDAP_RES_MODIFY: return "modify";
1109         case LDAP_RES_RENAME: return "rename";
1110         case LDAP_RES_SEARCH_ENTRY: return "search-entry";
1111         case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
1112         case LDAP_RES_SEARCH_RESULT: return "search-result";
1113         }
1114         return "unknown";
1115 }
1116
1117 int
1118 ldap_msgfree( LDAPMessage *lm )
1119 {
1120         LDAPMessage     *next;
1121         int             type = 0;
1122
1123         Debug( LDAP_DEBUG_TRACE, "ldap_msgfree\n", 0, 0, 0 );
1124
1125         for ( ; lm != NULL; lm = next ) {
1126                 next = lm->lm_chain;
1127                 type = lm->lm_msgtype;
1128                 ber_free( lm->lm_ber, 1 );
1129                 LDAP_FREE( (char *) lm );
1130         }
1131
1132         return( type );
1133 }
1134
1135 /*
1136  * ldap_msgdelete - delete a message.  It returns:
1137  *      0       if the entire message was deleted
1138  *      -1      if the message was not found, or only part of it was found
1139  */
1140 int
1141 ldap_msgdelete( LDAP *ld, int msgid )
1142 {
1143         LDAPMessage     *lm, *prev;
1144         int rc = 0;
1145
1146         assert( ld != NULL );
1147
1148         Debug( LDAP_DEBUG_TRACE, "ldap_msgdelete\n", 0, 0, 0 );
1149
1150         prev = NULL;
1151 #ifdef LDAP_R_COMPILE
1152         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
1153 #endif
1154         for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
1155                 if ( lm->lm_msgid == msgid )
1156                         break;
1157                 prev = lm;
1158         }
1159
1160         if ( lm == NULL ) {
1161                 rc = -1;
1162         } else {
1163                 if ( prev == NULL )
1164                         ld->ld_responses = lm->lm_next;
1165                 else
1166                         prev->lm_next = lm->lm_next;
1167         }
1168 #ifdef LDAP_R_COMPILE
1169         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
1170 #endif
1171         if ( lm && ldap_msgfree( lm ) == LDAP_RES_SEARCH_ENTRY )
1172                 rc = -1;
1173
1174         return( rc );
1175 }
1176
1177
1178 /*
1179  * ldap_abandoned
1180  *
1181  * return 1 if message msgid is waiting to be abandoned, 0 otherwise
1182  *
1183  * expects ld_res_mutex to be locked
1184  */
1185 static int
1186 ldap_abandoned( LDAP *ld, ber_int_t msgid )
1187 {
1188         int     i;
1189
1190 #ifdef LDAP_R_COMPILE
1191         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1192 #endif
1193
1194         if ( ld->ld_abandoned == NULL )
1195                 return( 0 );
1196
1197         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1198                 if ( ld->ld_abandoned[i] == msgid )
1199                         return( 1 );
1200
1201         return( 0 );
1202 }
1203
1204
1205 /*
1206  * ldap_mark_abandoned
1207  *
1208  * expects ld_res_mutex to be locked
1209  */
1210 static int
1211 ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
1212 {
1213         int     i;
1214
1215 #ifdef LDAP_R_COMPILE
1216         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1217 #endif
1218
1219         if ( ld->ld_abandoned == NULL )
1220                 return( -1 );
1221
1222         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1223                 if ( ld->ld_abandoned[i] == msgid )
1224                         break;
1225
1226         if ( ld->ld_abandoned[i] == -1 )
1227                 return( -1 );
1228
1229         for ( ; ld->ld_abandoned[i] != -1; i++ ) {
1230                 ld->ld_abandoned[i] = ld->ld_abandoned[i + 1];
1231         }
1232
1233         return( 0 );
1234 }