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 #ifdef LDAP_R_COMPILE
 277                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 278 #endif
 279                         ldap_dump_connection( ld, ld->ld_conns, 1 );
 280 #ifdef LDAP_R_COMPILE
 281                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 282                         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 283 #endif
 284                         ldap_dump_requests_and_responses( ld );
 285 #ifdef LDAP_R_COMPILE
 286                         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 287 #endif
 288                 }
 289 #endif /* LDAP_DEBUG */
 290
 291                 if ( ( *result = chkResponseList( ld, msgid, all ) ) != NULL ) {
 292                         rc = (*result)->lm_msgtype;
 293
 294                 } else {
 295                         int lc_ready = 0;
 296
 297 #ifdef LDAP_R_COMPILE
 298                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 299 #endif
 300                         for ( lc = ld->ld_conns; lc != NULL; lc = nextlc ) {
 301                                 nextlc = lc->lconn_next;
 302                                 if ( ber_sockbuf_ctrl( lc->lconn_sb,
 303                                                 LBER_SB_OPT_DATA_READY, NULL ) )
 304                                 {
 305 #ifdef LDAP_R_COMPILE
 306                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 307 #endif
 308                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 309 #ifdef LDAP_R_COMPILE
 310                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 311 #endif
 312                                         lc_ready = 1;
 313                                         break;
 314                                 }
 315                         }
 316 #ifdef LDAP_R_COMPILE
 317                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 318 #endif
 319
 320                         if ( !lc_ready ) {
 321                                 rc = ldap_int_select( ld, tvp );
 322 #ifdef LDAP_DEBUG
 323                                 if ( rc == -1 ) {
 324                                         Debug( LDAP_DEBUG_TRACE,
 325                                                 "ldap_int_select returned -1: errno %d\n",
 326                                                 errno, 0, 0 );
 327                                 }
 328 #endif
 329
 330                                 if ( rc == 0 || ( rc == -1 && (
 331                                         !LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART)
 332                                                 || errno != EINTR ) ) )
 333                                 {
 334                                         ld->ld_errno = (rc == -1 ? LDAP_SERVER_DOWN :
 335                                                 LDAP_TIMEOUT);
 336                                         return( rc );
 337                                 }
 338
 339                                 if ( rc == -1 ) {
 340                                         rc = LDAP_MSG_X_KEEP_LOOKING;   /* select interrupted: loop */
 341                                 } else {
 342                                         rc = LDAP_MSG_X_KEEP_LOOKING;
 343 #ifdef LDAP_R_COMPILE
 344                                         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 345 #endif
 346                                         if ( ld->ld_requests &&
 347                                                 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
 348                                                 ldap_is_write_ready( ld,
 349                                                         ld->ld_requests->lr_conn->lconn_sb ) )
 350                                         {
 351                                                 ldap_int_flush_request( ld, ld->ld_requests );
 352                                         }
 353 #ifdef LDAP_R_COMPILE
 354                                         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 355                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 356 #endif
 357                                         for ( lc = ld->ld_conns; rc == LDAP_MSG_X_KEEP_LOOKING && lc != NULL;
 358                                                 lc = nextlc )
 359                                         {
 360                                                 nextlc = lc->lconn_next;
 361                                                 if ( lc->lconn_status == LDAP_CONNST_CONNECTED &&
 362                                                         ldap_is_read_ready( ld, lc->lconn_sb ) )
 363                                                 {
 364 #ifdef LDAP_R_COMPILE
 365                                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 366 #endif
 367                                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 368                                                                 if ( lc == NULL ) lc = nextlc;
 369 #ifdef LDAP_R_COMPILE
 370                                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 371 #endif
 372                                                 }
 373                                         }
 374 #ifdef LDAP_R_COMPILE
 375                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 376 #endif
 377                                 }
 378                         }
 379                 }
 380
 381                 if ( rc == LDAP_MSG_X_KEEP_LOOKING && tvp != NULL ) {
 382                         tmp_time = time( NULL );
 383                         tv0.tv_sec -= ( tmp_time - start_time );
 384                         if ( tv0.tv_sec <= 0 ) {
 385                                 rc = 0; /* timed out */
 386                                 ld->ld_errno = LDAP_TIMEOUT;
 387                                 break;
 388                         }
 389                         tv.tv_sec = tv0.tv_sec;
 390
 391                         Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p %ld secs to go\n",
 392                                 (void *)ld, (long) tv.tv_sec, 0 );
 393                         start_time = tmp_time;
 394                 }
 395         }
 396
 397         return( rc );
 398 }
 399
 400
 401 static ber_tag_t
 402 try_read1msg(
 403         LDAP *ld,
 404         ber_int_t msgid,
 405         int all,
 406         LDAPConn **lcp,
 407         LDAPMessage **result )
 408 {
 409         BerElement      *ber;
 410         LDAPMessage     *newmsg, *l, *prev;
 411         ber_int_t       id;
 412         ber_tag_t       tag;
 413         ber_len_t       len;
 414         int             foundit = 0;
 415         LDAPRequest     *lr, *tmplr;
 416         LDAPConn        *lc;
 417         BerElement      tmpber;
 418         int             rc, refer_cnt, hadref, simple_request;
 419         ber_int_t       lderr;
 420
 421 #ifdef LDAP_CONNECTIONLESS
 422         LDAPMessage     *tmp = NULL, *chain_head = NULL;
 423         int             moremsgs = 0, isv2 = 0;
 424 #endif
 425
 426         /*
 427          * v3ref = flag for V3 referral / search reference
 428          * 0 = not a ref, 1 = sucessfully chased ref, -1 = pass ref to application
 429          */
 430         enum {
 431                 V3REF_NOREF     = 0,
 432                 V3REF_SUCCESS   = 1,
 433                 V3REF_TOAPP     = -1
 434         }       v3ref;
 435
 436         assert( ld != NULL );
 437         assert( lcp != NULL );
 438         assert( *lcp != NULL );
 439
 440 #ifdef LDAP_R_COMPILE
 441         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 442 #endif
 443
 444         Debug( LDAP_DEBUG_TRACE, "read1msg: ld %p msgid %d all %d\n",
 445                 (void *)ld, msgid, all );
 446
 447         lc = *lcp;
 448
 449 retry:
 450         if ( lc->lconn_ber == NULL ) {
 451                 lc->lconn_ber = ldap_alloc_ber_with_options( ld );
 452
 453                 if( lc->lconn_ber == NULL ) {
 454                         return -1;
 455                 }
 456         }
 457
 458         ber = lc->lconn_ber;
 459         assert( LBER_VALID (ber) );
 460
 461         /* get the next message */
 462         errno = 0;
 463 #ifdef LDAP_CONNECTIONLESS
 464         if ( LDAP_IS_UDP(ld) ) {
 465                 struct sockaddr from;
 466                 ber_int_sb_read( lc->lconn_sb, &from, sizeof(struct sockaddr) );
 467                 if (ld->ld_options.ldo_version == LDAP_VERSION2) isv2 = 1;
 468         }
 469 nextresp3:
 470 #endif
 471         tag = ber_get_next( lc->lconn_sb, &len, ber );
 472         switch ( tag ) {
 473         case LDAP_TAG_MESSAGE:
 474                 /*
 475                  * We read a complete message.
 476                  * The connection should no longer need this ber.
 477                  */
 478                 lc->lconn_ber = NULL;
 479                 break;
 480
 481         case LBER_DEFAULT:
 482 #ifdef LDAP_DEBUG
 483                 Debug( LDAP_DEBUG_CONNS,
 484                         "ber_get_next failed.\n", 0, 0, 0 );
 485 #endif
 486 #ifdef EWOULDBLOCK
 487                 if ( errno == EWOULDBLOCK ) return LDAP_MSG_X_KEEP_LOOKING;
 488 #endif
 489 #ifdef EAGAIN
 490                 if ( errno == EAGAIN ) return LDAP_MSG_X_KEEP_LOOKING;
 491 #endif
 492                 ld->ld_errno = LDAP_SERVER_DOWN;
 493                 return -1;
 494
 495         default:
 496                 ld->ld_errno = LDAP_LOCAL_ERROR;
 497                 return -1;
 498         }
 499
 500         /* message id */
 501         if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
 502                 ber_free( ber, 1 );
 503                 ld->ld_errno = LDAP_DECODING_ERROR;
 504                 return( -1 );
 505         }
 506
 507         /* if it's been abandoned, toss it */
 508         if ( ldap_abandoned( ld, id ) ) {
 509                 Debug( LDAP_DEBUG_ANY, "abandoned ld %p msgid %ld\n",
 510                         (void *)ld, (long) id, 0);
 511 retry_ber:
 512                 ber_free( ber, 1 );
 513                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 514                         goto retry;
 515                 }
 516                 return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
 517         }
 518
 519         lr = ldap_find_request_by_msgid( ld, id );
 520         if ( lr == NULL ) {
 521                 Debug( LDAP_DEBUG_ANY,
 522                         "no request for response on ld %p msgid %ld (tossing)\n",
 523                         (void *)ld, (long)id, 0 );
 524                 goto retry_ber;
 525         }
 526 #ifdef LDAP_CONNECTIONLESS
 527         if (LDAP_IS_UDP(ld) && isv2) {
 528                 ber_scanf(ber, "x{");
 529         }
 530 nextresp2:
 531 #endif
 532         /* the message type */
 533         if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
 534                 ld->ld_errno = LDAP_DECODING_ERROR;
 535                 ber_free( ber, 1 );
 536                 return( -1 );
 537         }
 538
 539         Debug( LDAP_DEBUG_TRACE,
 540                 "read1msg: ld %p msgid %ld message type %s\n",
 541                 (void *)ld, (long) lr->lr_msgid, ldap_int_msgtype2str( tag ));
 542
 543         id = lr->lr_origid;
 544         refer_cnt = 0;
 545         hadref = simple_request = 0;
 546         rc = LDAP_MSG_X_KEEP_LOOKING;   /* default is to keep looking (no response found) */
 547         lr->lr_res_msgtype = tag;
 548
 549         /*
 550          * This code figures out if we are going to chase a
 551          * referral / search reference, or pass it back to the application
 552          */
 553         v3ref = V3REF_NOREF;    /* Assume not a V3 search reference/referral */
 554         if( (tag != LDAP_RES_SEARCH_ENTRY) && (ld->ld_version > LDAP_VERSION2) ) {
 555                 BerElement      tmpber = *ber;  /* struct copy */
 556                 char **refs = NULL;
 557
 558                 if( tag == LDAP_RES_SEARCH_REFERENCE ) {
 559                         /* This is a V3 search reference */
 560                         /* Assume we do not chase the reference,
 561                          * but pass it to application */
 562                         v3ref = V3REF_TOAPP;
 563                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
 564                                         (lr->lr_parent != NULL) )
 565                         {
 566                                 /* Get the referral list */
 567                                 if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
 568                                         rc = LDAP_DECODING_ERROR;
 569                                 } else {
 570                                         /* Note: refs array is freed by ldap_chase_v3referrals */
 571                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 572                                             1, &lr->lr_res_error, &hadref );
 573                                         if ( refer_cnt > 0 ) {
 574                                                 /* sucessfully chased reference */
 575                                                 /* If haven't got end search, set chasing referrals */
 576                                                 if ( lr->lr_status != LDAP_REQST_COMPLETED ) {
 577                                                         lr->lr_status = LDAP_REQST_CHASINGREFS;
 578                                                         Debug( LDAP_DEBUG_TRACE,
 579                                                                 "read1msg:  search ref chased, "
 580                                                                 "mark request chasing refs, "
 581                                                                 "id = %d\n",
 582                                                                 lr->lr_msgid, 0, 0);
 583                                                 }
 584
 585                                                 /* We sucessfully chased the reference */
 586                                                 v3ref = V3REF_SUCCESS;
 587                                         }
 588                                 }
 589                         }
 590                 } else {
 591                         /* Check for V3 referral */
 592                         ber_len_t       len;
 593                         char            *lr_res_error = NULL;
 594
 595                         if ( ber_scanf( &tmpber, "{eAA",/*}*/ &lderr,
 596                                     &lr->lr_res_matched, &lr_res_error )
 597                                     != LBER_ERROR )
 598                         {
 599                                 if ( lr_res_error != NULL ) {
 600                                         {
 601                                                 if ( lr->lr_res_error != NULL ) {
 602                                                         (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 603                                                         LDAP_FREE( (char *)lr_res_error );
 604
 605                                                 } else {
 606                                                         lr->lr_res_error = lr_res_error;
 607                                                 }
 608                                         }
 609                                         lr_res_error = NULL;
 610                                 }
 611
 612                                 /* Check if V3 referral */
 613                                 if ( ber_peek_tag( &tmpber, &len ) == LDAP_TAG_REFERRAL ) {
 614                                         /* We have a V3 referral, assume we cannot chase it */
 615                                         v3ref = V3REF_TOAPP;
 616                                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS)
 617                                                          || (lr->lr_parent != NULL) )
 618                                         {
 619                                                 /* Assume referral not chased and return it to app */
 620                                                 v3ref = V3REF_TOAPP;
 621
 622                                                 /* Get the referral list */
 623                                                 if( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
 624                                                         rc = LDAP_DECODING_ERROR;
 625                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 626                                                         Debug( LDAP_DEBUG_TRACE,
 627                                                                 "read1msg: referral decode error, mark request completed, ld %p msgid %d\n",
 628                                                                 (void *)ld, lr->lr_msgid, 0);
 629                                                 } else {
 630                                                         /* Chase the referral
 631                                                          * Note: refs arrary is freed by ldap_chase_v3referrals
 632                                                          */
 633                                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 634                                                                 0, &lr->lr_res_error, &hadref );
 635                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 636                                                         Debug( LDAP_DEBUG_TRACE,
 637                                                                 "read1msg: referral chased, mark request completed, ld %p msgid %d\n",
 638                                                                 (void *)ld, lr->lr_msgid, 0);
 639                                                         if( refer_cnt > 0) {
 640                                                                 /* Referral successfully chased */
 641                                                                 v3ref = V3REF_SUCCESS;
 642                                                         }
 643                                                 }
 644                                         }
 645                                 }
 646
 647                                 if( lr->lr_res_matched != NULL ) {
 648                                         LDAP_FREE( lr->lr_res_matched );
 649                                         lr->lr_res_matched = NULL;
 650                                 }
 651                                 if( lr->lr_res_error != NULL ) {
 652                                         LDAP_FREE( lr->lr_res_error );
 653                                         lr->lr_res_error = NULL;
 654                                 }
 655                         }
 656                 }
 657         }
 658
 659         /* All results that just return a status, i.e. don't return data
 660          * go through the following code.  This code also chases V2 referrals
 661          * and checks if all referrals have been chased.
 662          */
 663         if ( (tag != LDAP_RES_SEARCH_ENTRY) && (v3ref != V3REF_TOAPP) &&
 664                 (tag != LDAP_RES_INTERMEDIATE ))
 665         {
 666                 /* For a v3 search referral/reference, only come here if already chased it */
 667                 if ( ld->ld_version >= LDAP_VERSION2 &&
 668                         ( lr->lr_parent != NULL ||
 669                         LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ) )
 670                 {
 671                         char            *lr_res_error = NULL;
 672
 673                         tmpber = *ber;  /* struct copy */
 674                         if ( v3ref == V3REF_SUCCESS ) {
 675                                 /* V3 search reference or V3 referral
 676                                  * sucessfully chased. If this message
 677                                  * is a search result, then it has no more
 678                                  * outstanding referrals.
 679                                  */
 680                                 if ( tag == LDAP_RES_SEARCH_RESULT )
 681                                         refer_cnt = 0;
 682                         } else if ( ber_scanf( &tmpber, "{eAA}", &lderr,
 683                                 &lr->lr_res_matched, &lr_res_error )
 684                                 != LBER_ERROR )
 685                         {
 686                                 if ( lr_res_error != NULL ) {
 687                                         if ( lr->lr_res_error != NULL ) {
 688                                                 (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 689                                                 LDAP_FREE( (char *)lr_res_error );
 690                                         } else {
 691                                                 lr->lr_res_error = lr_res_error;
 692                                         }
 693                                         lr_res_error = NULL;
 694                                 }
 695
 696                                 switch ( lderr ) {
 697                                 case LDAP_SUCCESS:
 698                                 case LDAP_COMPARE_TRUE:
 699                                 case LDAP_COMPARE_FALSE:
 700                                         break;
 701
 702                                 default:
 703                                         if ( lr->lr_res_error == NULL
 704                                                 || lr->lr_res_error[ 0 ] == '\0' )
 705                                         {
 706                                                 break;
 707                                         }
 708
 709                                         /* referrals are in error string */
 710                                         refer_cnt = ldap_chase_referrals( ld, lr,
 711                                                 &lr->lr_res_error, -1, &hadref );
 712                                         lr->lr_status = LDAP_REQST_COMPLETED;
 713                                         Debug( LDAP_DEBUG_TRACE,
 714                                                 "read1msg:  V2 referral chased, "
 715                                                 "mark request completed, id = %d\n",
 716                                                 lr->lr_msgid, 0, 0 );
 717                                         break;
 718                                 }
 719
 720                                 /* save errno, message, and matched string */
 721                                 if ( !hadref || lr->lr_res_error == NULL ) {
 722                                         lr->lr_res_errno = ( lderr ==
 723                                         LDAP_PARTIAL_RESULTS ) ? LDAP_SUCCESS
 724                                         : lderr;
 725                                 } else if ( ld->ld_errno != LDAP_SUCCESS ) {
 726                                         lr->lr_res_errno = ld->ld_errno;
 727                                 } else {
 728                                         lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
 729                                 }
 730
 731                                 Debug( LDAP_DEBUG_TRACE, "new result:  "
 732                                         "res_errno: %d, "
 733                                         "res_error: <%s>, "
 734                                         "res_matched: <%s>\n",
 735                                         lr->lr_res_errno,
 736                                         lr->lr_res_error ? lr->lr_res_error : "",
 737                                         lr->lr_res_matched ? lr->lr_res_matched : "" );
 738                         }
 739
 740                         /* in any case, don't leave any lr_res_error 'round */
 741                         if ( lr_res_error ) {
 742                                 LDAP_FREE( lr_res_error );
 743                         }
 744                 }
 745
 746                 Debug( LDAP_DEBUG_TRACE,
 747                         "read1msg: ld %p %d new referrals\n",
 748                         (void *)ld, refer_cnt, 0 );
 749
 750                 if ( refer_cnt != 0 ) { /* chasing referrals */
 751                         ber_free( ber, 1 );
 752                         ber = NULL;
 753                         if ( refer_cnt < 0 ) {
 754                                 return( -1 );   /* fatal error */
 755                         }
 756                         lr->lr_res_errno = LDAP_SUCCESS; /* sucessfully chased referral */
 757                 } else {
 758                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
 759                                 /* request without any referrals */
 760                                 simple_request = ( hadref ? 0 : 1 );
 761                         } else {
 762                                 /* request with referrals or child request */
 763                                 ber_free( ber, 1 );
 764                                 ber = NULL;
 765                         }
 766
 767                         lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
 768                         Debug( LDAP_DEBUG_TRACE,
 769                                 "read1msg:  mark request completed, ld %p msgid %d\n",
 770                                 (void *)ld, lr->lr_msgid, 0);
 771                         while ( lr->lr_parent != NULL ) {
 772                                 merge_error_info( ld, lr->lr_parent, lr );
 773
 774                                 lr = lr->lr_parent;
 775                                 if ( --lr->lr_outrefcnt > 0 ) {
 776                                         break;  /* not completely done yet */
 777                                 }
 778                         }
 779
 780                         /* Check if all requests are finished, lr is now parent */
 781                         tmplr = lr;
 782                         if ( tmplr->lr_status == LDAP_REQST_COMPLETED ) {
 783                                 for ( tmplr=lr->lr_child;
 784                                         tmplr != NULL;
 785                                         tmplr=tmplr->lr_refnext)
 786                                 {
 787                                         if ( tmplr->lr_status != LDAP_REQST_COMPLETED ) break;
 788                                 }
 789                         }
 790
 791                         /* This is the parent request if the request has referrals */
 792                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL &&
 793                                 tmplr == NULL )
 794                         {
 795                                 id = lr->lr_msgid;
 796                                 tag = lr->lr_res_msgtype;
 797                                 Debug( LDAP_DEBUG_ANY, "request done: ld %p msgid %ld\n",
 798                                         (void *)ld, (long) id, 0 );
 799 Debug( LDAP_DEBUG_TRACE,
 800 "res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 801 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 802 lr->lr_res_matched ? lr->lr_res_matched : "" );
 803                                 if ( !simple_request ) {
 804                                         ber_free( ber, 1 );
 805                                         ber = NULL;
 806                                         if ( build_result_ber( ld, &ber, lr )
 807                                             == LBER_ERROR )
 808                                         {
 809                                                 rc = -1; /* fatal error */
 810                                         }
 811                                 }
 812
 813 #ifdef LDAP_R_COMPILE
 814                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 815 #endif
 816                                 ldap_free_request( ld, lr );
 817 #ifdef LDAP_R_COMPILE
 818                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 819 #endif
 820                         }
 821
 822                         if ( lc != NULL ) {
 823 #ifdef LDAP_R_COMPILE
 824                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 825 #endif
 826                                 ldap_free_connection( ld, lc, 0, 1 );
 827 #ifdef LDAP_R_COMPILE
 828                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 829 #endif
 830                                 lc = *lcp = NULL;
 831                         }
 832                 }
 833         }
 834
 835         if ( ber == NULL ) {
 836                 return( rc );
 837         }
 838
 839         /* make a new ldap message */
 840         newmsg = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) );
 841         if ( newmsg == NULL ) {
 842                 ld->ld_errno = LDAP_NO_MEMORY;
 843                 return( -1 );
 844         }
 845         newmsg->lm_msgid = (int)id;
 846         newmsg->lm_msgtype = tag;
 847         newmsg->lm_ber = ber;
 848         newmsg->lm_chain_tail = newmsg;
 849
 850 #ifdef LDAP_CONNECTIONLESS
 851         /* CLDAP replies all fit in a single datagram. In LDAPv2 RFC1798
 852          * the responses are all a sequence wrapped in one message. In
 853          * LDAPv3 each response is in its own message. The datagram must
 854          * end with a SearchResult. We can't just parse each response in
 855          * separate calls to try_read1msg because the header info is only
 856          * present at the beginning of the datagram, not at the beginning
 857          * of each response. So parse all the responses at once and queue
 858          * them up, then pull off the first response to return to the
 859          * caller when all parsing is complete.
 860          */
 861         if ( LDAP_IS_UDP(ld) ) {
 862                 /* If not a result, look for more */
 863                 if ( tag != LDAP_RES_SEARCH_RESULT ) {
 864                         int ok = 0;
 865                         moremsgs = 1;
 866                         if (isv2) {
 867                                 /* LDAPv2: dup the current ber, skip past the current
 868                                  * response, and see if there are any more after it.
 869                                  */
 870                                 ber = ber_dup( ber );
 871                                 ber_scanf( ber, "x" );
 872                                 if (ber_peek_tag(ber, &len) != LBER_DEFAULT) {
 873                                         /* There's more - dup the ber buffer so they can all be
 874                                          * individually freed by ldap_msgfree.
 875                                          */
 876                                         struct berval bv;
 877                                         ber_get_option(ber, LBER_OPT_BER_REMAINING_BYTES, &len);
 878                                         bv.bv_val = LDAP_MALLOC(len);
 879                                         if (bv.bv_val) {
 880                                                 ok=1;
 881                                                 ber_read(ber, bv.bv_val, len);
 882                                                 bv.bv_len = len;
 883                                                 ber_init2(ber, &bv, ld->ld_lberoptions );
 884                                         }
 885                                 }
 886                         } else {
 887                                 /* LDAPv3: Just allocate a new ber. Since this is a buffered
 888                                  * datagram, if the sockbuf is readable we still have data
 889                                  * to parse.
 890                                  */
 891                                 ber = ldap_alloc_ber_with_options( ld );
 892                                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) ok = 1;
 893                         }
 894                         /* set up response chain */
 895                         if ( tmp == NULL ) {
 896                                 newmsg->lm_next = ld->ld_responses;
 897                                 ld->ld_responses = newmsg;
 898                                 chain_head = newmsg;
 899                         } else {
 900                                 tmp->lm_chain = newmsg;
 901                         }
 902                         chain_head->lm_chain_tail = newmsg;
 903                         tmp = newmsg;
 904                         /* "ok" means there's more to parse */
 905                         if (ok) {
 906                                 if (isv2) goto nextresp2;
 907                                 else goto nextresp3;
 908                         } else {
 909                                 /* got to end of datagram without a SearchResult. Free
 910                                  * our dup'd ber, but leave any buffer alone. For v2 case,
 911                                  * the previous response is still using this buffer. For v3,
 912                                  * the new ber has no buffer to free yet.
 913                                  */
 914                                 ber_free(ber, 0);
 915                                 return -1;
 916                         }
 917                 } else if ( moremsgs ) {
 918                 /* got search result, and we had multiple responses in 1 datagram.
 919                  * stick the result onto the end of the chain, and then pull the
 920                  * first response off the head of the chain.
 921                  */
 922                         tmp->lm_chain = newmsg;
 923                         chain_head->lm_chain_tail = newmsg;
 924                         *result = chkResponseList( ld, msgid, all );
 925                         ld->ld_errno = LDAP_SUCCESS;
 926                         return( (*result)->lm_msgtype );
 927                 }
 928         }
 929 #endif /* LDAP_CONNECTIONLESS */
 930
 931         /* is this the one we're looking for? */
 932         if ( msgid == LDAP_RES_ANY || id == msgid ) {
 933                 if ( all == LDAP_MSG_ONE
 934                     || (newmsg->lm_msgtype != LDAP_RES_SEARCH_RESULT
 935                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 936                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_REFERENCE) ) {
 937                         *result = newmsg;
 938                         ld->ld_errno = LDAP_SUCCESS;
 939                         return( tag );
 940                 } else if ( newmsg->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
 941                         foundit = 1;    /* return the chain later */
 942                 }
 943         }
 944
 945         /*
 946          * if not, we must add it to the list of responses.  if
 947          * the msgid is already there, it must be part of an existing
 948          * search response.
 949          */
 950
 951         prev = NULL;
 952         for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
 953                 if ( l->lm_msgid == newmsg->lm_msgid )
 954                         break;
 955                 prev = l;
 956         }
 957
 958         /* not part of an existing search response */
 959         if ( l == NULL ) {
 960                 if ( foundit ) {
 961                         *result = newmsg;
 962                         goto exit;
 963                 }
 964
 965                 newmsg->lm_next = ld->ld_responses;
 966                 ld->ld_responses = newmsg;
 967                 goto exit;
 968         }
 969
 970         Debug( LDAP_DEBUG_TRACE, "adding response ld %p msgid %ld type %ld:\n",
 971                 (void *)ld, (long) newmsg->lm_msgid, (long) newmsg->lm_msgtype );
 972
 973         /* part of a search response - add to end of list of entries */
 974         l->lm_chain_tail->lm_chain = newmsg;
 975         l->lm_chain_tail = newmsg;
 976
 977         /* return the whole chain if that's what we were looking for */
 978         if ( foundit ) {
 979                 if ( prev == NULL )
 980                         ld->ld_responses = l->lm_next;
 981                 else
 982                         prev->lm_next = l->lm_next;
 983                 *result = l;
 984         }
 985
 986 exit:
 987         if ( foundit ) {
 988                 ld->ld_errno = LDAP_SUCCESS;
 989                 return( tag );
 990         }
 991         if ( lc && ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 992                 goto retry;
 993         }
 994         return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
 995 }
 996
 997
 998 static ber_tag_t
 999 build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
1000 {
1001         ber_len_t       len;
1002         ber_tag_t       tag;
1003         ber_int_t       along;
1004         BerElement *ber;
1005
1006         *bp = NULL;
1007         ber = ldap_alloc_ber_with_options( ld );
1008
1009         if( ber == NULL ) {
1010                 ld->ld_errno = LDAP_NO_MEMORY;
1011                 return LBER_ERROR;
1012         }
1013
1014         if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
1015                 lr->lr_res_msgtype, lr->lr_res_errno,
1016                 lr->lr_res_matched ? lr->lr_res_matched : "",
1017                 lr->lr_res_error ? lr->lr_res_error : "" ) == -1 )
1018         {
1019                 ld->ld_errno = LDAP_ENCODING_ERROR;
1020                 ber_free(ber, 1);
1021                 return( LBER_ERROR );
1022         }
1023
1024         ber_reset( ber, 1 );
1025
1026         if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
1027                 ld->ld_errno = LDAP_DECODING_ERROR;
1028                 ber_free(ber, 1);
1029                 return( LBER_ERROR );
1030         }
1031
1032         if ( ber_get_enum( ber, &along ) == LBER_ERROR ) {
1033                 ld->ld_errno = LDAP_DECODING_ERROR;
1034                 ber_free(ber, 1);
1035                 return( LBER_ERROR );
1036         }
1037
1038         tag = ber_peek_tag( ber, &len );
1039
1040         if ( tag == LBER_ERROR ) {
1041                 ld->ld_errno = LDAP_DECODING_ERROR;
1042                 ber_free(ber, 1);
1043                 return( LBER_ERROR );
1044         }
1045
1046         *bp = ber;
1047         return tag;
1048 }
1049
1050
1051 static void
1052 merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
1053 {
1054 /*
1055  * Merge error information in "lr" with "parentr" error code and string.
1056  */
1057         if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
1058                 parentr->lr_res_errno = lr->lr_res_errno;
1059                 if ( lr->lr_res_error != NULL ) {
1060                         (void)ldap_append_referral( ld, &parentr->lr_res_error,
1061                             lr->lr_res_error );
1062                 }
1063         } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
1064                 parentr->lr_res_errno == LDAP_SUCCESS )
1065         {
1066                 parentr->lr_res_errno = lr->lr_res_errno;
1067                 if ( parentr->lr_res_error != NULL ) {
1068                         LDAP_FREE( parentr->lr_res_error );
1069                 }
1070                 parentr->lr_res_error = lr->lr_res_error;
1071                 lr->lr_res_error = NULL;
1072                 if ( LDAP_NAME_ERROR( lr->lr_res_errno ) ) {
1073                         if ( parentr->lr_res_matched != NULL ) {
1074                                 LDAP_FREE( parentr->lr_res_matched );
1075                         }
1076                         parentr->lr_res_matched = lr->lr_res_matched;
1077                         lr->lr_res_matched = NULL;
1078                 }
1079         }
1080
1081         Debug( LDAP_DEBUG_TRACE, "merged parent (id %d) error info:  ",
1082             parentr->lr_msgid, 0, 0 );
1083         Debug( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
1084             parentr->lr_res_errno, parentr->lr_res_error ?
1085             parentr->lr_res_error : "", parentr->lr_res_matched ?
1086             parentr->lr_res_matched : "" );
1087 }
1088
1089
1090
1091 int
1092 ldap_msgtype( LDAPMessage *lm )
1093 {
1094         assert( lm != NULL );
1095         return ( lm != NULL ) ? (int)lm->lm_msgtype : -1;
1096 }
1097
1098
1099 int
1100 ldap_msgid( LDAPMessage *lm )
1101 {
1102         assert( lm != NULL );
1103
1104         return ( lm != NULL ) ? lm->lm_msgid : -1;
1105 }
1106
1107
1108 char * ldap_int_msgtype2str( ber_tag_t tag )
1109 {
1110         switch( tag ) {
1111         case LDAP_RES_ADD: return "add";
1112         case LDAP_RES_BIND: return "bind";
1113         case LDAP_RES_COMPARE: return "compare";
1114         case LDAP_RES_DELETE: return "delete";
1115         case LDAP_RES_EXTENDED: return "extended-result";
1116         case LDAP_RES_INTERMEDIATE: return "intermediate";
1117         case LDAP_RES_MODIFY: return "modify";
1118         case LDAP_RES_RENAME: return "rename";
1119         case LDAP_RES_SEARCH_ENTRY: return "search-entry";
1120         case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
1121         case LDAP_RES_SEARCH_RESULT: return "search-result";
1122         }
1123         return "unknown";
1124 }
1125
1126 int
1127 ldap_msgfree( LDAPMessage *lm )
1128 {
1129         LDAPMessage     *next;
1130         int             type = 0;
1131
1132         Debug( LDAP_DEBUG_TRACE, "ldap_msgfree\n", 0, 0, 0 );
1133
1134         for ( ; lm != NULL; lm = next ) {
1135                 next = lm->lm_chain;
1136                 type = lm->lm_msgtype;
1137                 ber_free( lm->lm_ber, 1 );
1138                 LDAP_FREE( (char *) lm );
1139         }
1140
1141         return( type );
1142 }
1143
1144 /*
1145  * ldap_msgdelete - delete a message.  It returns:
1146  *      0       if the entire message was deleted
1147  *      -1      if the message was not found, or only part of it was found
1148  */
1149 int
1150 ldap_msgdelete( LDAP *ld, int msgid )
1151 {
1152         LDAPMessage     *lm, *prev;
1153         int rc = 0;
1154
1155         assert( ld != NULL );
1156
1157         Debug( LDAP_DEBUG_TRACE, "ldap_msgdelete\n", 0, 0, 0 );
1158
1159         prev = NULL;
1160 #ifdef LDAP_R_COMPILE
1161         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
1162 #endif
1163         for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
1164                 if ( lm->lm_msgid == msgid )
1165                         break;
1166                 prev = lm;
1167         }
1168
1169         if ( lm == NULL ) {
1170                 rc = -1;
1171         } else {
1172                 if ( prev == NULL )
1173                         ld->ld_responses = lm->lm_next;
1174                 else
1175                         prev->lm_next = lm->lm_next;
1176         }
1177 #ifdef LDAP_R_COMPILE
1178         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
1179 #endif
1180         if ( lm && ldap_msgfree( lm ) == LDAP_RES_SEARCH_ENTRY )
1181                 rc = -1;
1182
1183         return( rc );
1184 }
1185
1186
1187 /*
1188  * ldap_abandoned
1189  *
1190  * return 1 if message msgid is waiting to be abandoned, 0 otherwise
1191  *
1192  * expects ld_res_mutex to be locked
1193  */
1194 static int
1195 ldap_abandoned( LDAP *ld, ber_int_t msgid )
1196 {
1197         int     i;
1198
1199 #ifdef LDAP_R_COMPILE
1200         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1201 #endif
1202
1203         if ( ld->ld_abandoned == NULL )
1204                 return( 0 );
1205
1206         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1207                 if ( ld->ld_abandoned[i] == msgid )
1208                         return( 1 );
1209
1210         return( 0 );
1211 }
1212
1213
1214 /*
1215  * ldap_mark_abandoned
1216  *
1217  * expects ld_res_mutex to be locked
1218  */
1219 static int
1220 ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
1221 {
1222         int     i;
1223
1224 #ifdef LDAP_R_COMPILE
1225         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1226 #endif
1227
1228         if ( ld->ld_abandoned == NULL )
1229                 return( -1 );
1230
1231         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1232                 if ( ld->ld_abandoned[i] == msgid )
1233                         break;
1234
1235         if ( ld->ld_abandoned[i] == -1 )
1236                 return( -1 );
1237
1238         for ( ; ld->ld_abandoned[i] != -1; i++ ) {
1239                 ld->ld_abandoned[i] = ld->ld_abandoned[i + 1];
1240         }
1241
1242         return( 0 );
1243 }