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 (2006)
  41  * ASN.1 fragments are from RFC 4511; see RFC for full legal notices.
  42  */
  43
  44 /*
  45  * LDAPv3 (RFC 4511)
  46  *      LDAPResult ::= SEQUENCE {
  47  *              resultCode                      ENUMERATED { ... },
  48  *              matchedDN                       LDAPDN,
  49  *              diagnosticMessage       LDAPString,
  50  *              referral                        [3] 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;
 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 = lc->lconn_next ) {
 301                                 if ( ber_sockbuf_ctrl( lc->lconn_sb,
 302                                                 LBER_SB_OPT_DATA_READY, NULL ) )
 303                                 {
 304 #ifdef LDAP_R_COMPILE
 305                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 306 #endif
 307                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 308 #ifdef LDAP_R_COMPILE
 309                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 310 #endif
 311                                         lc_ready = 1;
 312                                         break;
 313                                 }
 314                         }
 315 #ifdef LDAP_R_COMPILE
 316                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 317 #endif
 318
 319                         if ( !lc_ready ) {
 320                                 rc = ldap_int_select( ld, tvp );
 321 #ifdef LDAP_DEBUG
 322                                 if ( rc == -1 ) {
 323                                         Debug( LDAP_DEBUG_TRACE,
 324                                                 "ldap_int_select returned -1: errno %d\n",
 325                                                 errno, 0, 0 );
 326                                 }
 327 #endif
 328
 329                                 if ( rc == 0 || ( rc == -1 && (
 330                                         !LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART)
 331                                                 || errno != EINTR ) ) )
 332                                 {
 333                                         ld->ld_errno = (rc == -1 ? LDAP_SERVER_DOWN :
 334                                                 LDAP_TIMEOUT);
 335                                         return( rc );
 336                                 }
 337
 338                                 if ( rc == -1 ) {
 339                                         rc = LDAP_MSG_X_KEEP_LOOKING;   /* select interrupted: loop */
 340                                 } else {
 341                                         rc = LDAP_MSG_X_KEEP_LOOKING;
 342 #ifdef LDAP_R_COMPILE
 343                                         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 344 #endif
 345                                         if ( ld->ld_requests &&
 346                                                 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
 347                                                 ldap_is_write_ready( ld,
 348                                                         ld->ld_requests->lr_conn->lconn_sb ) )
 349                                         {
 350                                                 ldap_int_flush_request( ld, ld->ld_requests );
 351                                         }
 352 #ifdef LDAP_R_COMPILE
 353                                         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 354                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 355 #endif
 356                                         for ( lc = ld->ld_conns;
 357                                                 rc == LDAP_MSG_X_KEEP_LOOKING && lc != NULL; )
 358                                         {
 359                                                 if ( lc->lconn_status == LDAP_CONNST_CONNECTED &&
 360                                                         ldap_is_read_ready( ld, lc->lconn_sb ) )
 361                                                 {
 362 #ifdef LDAP_R_COMPILE
 363                                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 364 #endif
 365                                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 366 #ifdef LDAP_R_COMPILE
 367                                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 368 #endif
 369                                                         if ( lc == NULL ) {
 370                                                                 /* if lc gets free()'d,
 371                                                                  * there's no guarantee
 372                                                                  * lc->lconn_next is still
 373                                                                  * sane; better restart
 374                                                                  * (ITS#4405) */
 375                                                                 lc = ld->ld_conns;
 376
 377                                                                 /* don't get to next conn! */
 378                                                                 break;
 379                                                         }
 380                                                 }
 381
 382                                                 /* next conn */
 383                                                 lc = lc->lconn_next;
 384                                         }
 385 #ifdef LDAP_R_COMPILE
 386                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 387 #endif
 388                                 }
 389                         }
 390                 }
 391
 392                 if ( rc == LDAP_MSG_X_KEEP_LOOKING && tvp != NULL ) {
 393                         tmp_time = time( NULL );
 394                         tv0.tv_sec -= ( tmp_time - start_time );
 395                         if ( tv0.tv_sec <= 0 ) {
 396                                 rc = 0; /* timed out */
 397                                 ld->ld_errno = LDAP_TIMEOUT;
 398                                 break;
 399                         }
 400                         tv.tv_sec = tv0.tv_sec;
 401
 402                         Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p %ld secs to go\n",
 403                                 (void *)ld, (long) tv.tv_sec, 0 );
 404                         start_time = tmp_time;
 405                 }
 406         }
 407
 408         return( rc );
 409 }
 410
 411
 412 static ber_tag_t
 413 try_read1msg(
 414         LDAP *ld,
 415         ber_int_t msgid,
 416         int all,
 417         LDAPConn **lcp,
 418         LDAPMessage **result )
 419 {
 420         BerElement      *ber;
 421         LDAPMessage     *newmsg, *l, *prev;
 422         ber_int_t       id;
 423         ber_tag_t       tag;
 424         ber_len_t       len;
 425         int             foundit = 0;
 426         LDAPRequest     *lr, *tmplr;
 427         LDAPConn        *lc;
 428         BerElement      tmpber;
 429         int             rc, refer_cnt, hadref, simple_request;
 430         ber_int_t       lderr;
 431
 432 #ifdef LDAP_CONNECTIONLESS
 433         LDAPMessage     *tmp = NULL, *chain_head = NULL;
 434         int             moremsgs = 0, isv2 = 0;
 435 #endif
 436
 437         /*
 438          * v3ref = flag for V3 referral / search reference
 439          * 0 = not a ref, 1 = sucessfully chased ref, -1 = pass ref to application
 440          */
 441         enum {
 442                 V3REF_NOREF     = 0,
 443                 V3REF_SUCCESS   = 1,
 444                 V3REF_TOAPP     = -1
 445         }       v3ref;
 446
 447         assert( ld != NULL );
 448         assert( lcp != NULL );
 449         assert( *lcp != NULL );
 450
 451 #ifdef LDAP_R_COMPILE
 452         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 453 #endif
 454
 455         Debug( LDAP_DEBUG_TRACE, "read1msg: ld %p msgid %d all %d\n",
 456                 (void *)ld, msgid, all );
 457
 458         lc = *lcp;
 459
 460 retry:
 461         if ( lc->lconn_ber == NULL ) {
 462                 lc->lconn_ber = ldap_alloc_ber_with_options( ld );
 463
 464                 if( lc->lconn_ber == NULL ) {
 465                         return -1;
 466                 }
 467         }
 468
 469         ber = lc->lconn_ber;
 470         assert( LBER_VALID (ber) );
 471
 472         /* get the next message */
 473         errno = 0;
 474 #ifdef LDAP_CONNECTIONLESS
 475         if ( LDAP_IS_UDP(ld) ) {
 476                 struct sockaddr from;
 477                 ber_int_sb_read( lc->lconn_sb, &from, sizeof(struct sockaddr) );
 478                 if (ld->ld_options.ldo_version == LDAP_VERSION2) isv2 = 1;
 479         }
 480 nextresp3:
 481 #endif
 482         tag = ber_get_next( lc->lconn_sb, &len, ber );
 483         switch ( tag ) {
 484         case LDAP_TAG_MESSAGE:
 485                 /*
 486                  * We read a complete message.
 487                  * The connection should no longer need this ber.
 488                  */
 489                 lc->lconn_ber = NULL;
 490                 break;
 491
 492         case LBER_DEFAULT:
 493 #ifdef LDAP_DEBUG
 494                 Debug( LDAP_DEBUG_CONNS,
 495                         "ber_get_next failed.\n", 0, 0, 0 );
 496 #endif
 497 #ifdef EWOULDBLOCK
 498                 if ( errno == EWOULDBLOCK ) return LDAP_MSG_X_KEEP_LOOKING;
 499 #endif
 500 #ifdef EAGAIN
 501                 if ( errno == EAGAIN ) return LDAP_MSG_X_KEEP_LOOKING;
 502 #endif
 503                 ld->ld_errno = LDAP_SERVER_DOWN;
 504                 return -1;
 505
 506         default:
 507                 ld->ld_errno = LDAP_LOCAL_ERROR;
 508                 return -1;
 509         }
 510
 511         /* message id */
 512         if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
 513                 ber_free( ber, 1 );
 514                 ld->ld_errno = LDAP_DECODING_ERROR;
 515                 return( -1 );
 516         }
 517
 518         /* if it's been abandoned, toss it */
 519         if ( ldap_abandoned( ld, id ) ) {
 520                 Debug( LDAP_DEBUG_ANY, "abandoned ld %p msgid %ld\n",
 521                         (void *)ld, (long) id, 0);
 522 retry_ber:
 523                 ber_free( ber, 1 );
 524                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 525                         goto retry;
 526                 }
 527                 return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
 528         }
 529
 530         lr = ldap_find_request_by_msgid( ld, id );
 531         if ( lr == NULL ) {
 532                 Debug( LDAP_DEBUG_ANY,
 533                         "no request for response on ld %p msgid %ld (tossing)\n",
 534                         (void *)ld, (long)id, 0 );
 535                 goto retry_ber;
 536         }
 537 #ifdef LDAP_CONNECTIONLESS
 538         if (LDAP_IS_UDP(ld) && isv2) {
 539                 ber_scanf(ber, "x{");
 540         }
 541 nextresp2:
 542 #endif
 543         /* the message type */
 544         if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
 545                 ld->ld_errno = LDAP_DECODING_ERROR;
 546                 ber_free( ber, 1 );
 547                 return( -1 );
 548         }
 549
 550         Debug( LDAP_DEBUG_TRACE,
 551                 "read1msg: ld %p msgid %ld message type %s\n",
 552                 (void *)ld, (long) lr->lr_msgid, ldap_int_msgtype2str( tag ));
 553
 554         id = lr->lr_origid;
 555         refer_cnt = 0;
 556         hadref = simple_request = 0;
 557         rc = LDAP_MSG_X_KEEP_LOOKING;   /* default is to keep looking (no response found) */
 558         lr->lr_res_msgtype = tag;
 559
 560         /*
 561          * This code figures out if we are going to chase a
 562          * referral / search reference, or pass it back to the application
 563          */
 564         v3ref = V3REF_NOREF;    /* Assume not a V3 search reference/referral */
 565         if( (tag != LDAP_RES_SEARCH_ENTRY) && (ld->ld_version > LDAP_VERSION2) ) {
 566                 BerElement      tmpber = *ber;  /* struct copy */
 567                 char **refs = NULL;
 568
 569                 if( tag == LDAP_RES_SEARCH_REFERENCE ) {
 570                         /* This is a V3 search reference */
 571                         /* Assume we do not chase the reference,
 572                          * but pass it to application */
 573                         v3ref = V3REF_TOAPP;
 574                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
 575                                         (lr->lr_parent != NULL) )
 576                         {
 577                                 /* Get the referral list */
 578                                 if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
 579                                         rc = LDAP_DECODING_ERROR;
 580                                 } else {
 581                                         /* Note: refs array is freed by ldap_chase_v3referrals */
 582                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 583                                             1, &lr->lr_res_error, &hadref );
 584                                         if ( refer_cnt > 0 ) {
 585                                                 /* sucessfully chased reference */
 586                                                 /* If haven't got end search, set chasing referrals */
 587                                                 if ( lr->lr_status != LDAP_REQST_COMPLETED ) {
 588                                                         lr->lr_status = LDAP_REQST_CHASINGREFS;
 589                                                         Debug( LDAP_DEBUG_TRACE,
 590                                                                 "read1msg:  search ref chased, "
 591                                                                 "mark request chasing refs, "
 592                                                                 "id = %d\n",
 593                                                                 lr->lr_msgid, 0, 0);
 594                                                 }
 595
 596                                                 /* We sucessfully chased the reference */
 597                                                 v3ref = V3REF_SUCCESS;
 598                                         }
 599                                 }
 600                         }
 601                 } else {
 602                         /* Check for V3 referral */
 603                         ber_len_t       len;
 604                         char            *lr_res_error = NULL;
 605
 606                         if ( ber_scanf( &tmpber, "{eAA",/*}*/ &lderr,
 607                                     &lr->lr_res_matched, &lr_res_error )
 608                                     != LBER_ERROR )
 609                         {
 610                                 if ( lr_res_error != NULL ) {
 611                                         {
 612                                                 if ( lr->lr_res_error != NULL ) {
 613                                                         (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 614                                                         LDAP_FREE( (char *)lr_res_error );
 615
 616                                                 } else {
 617                                                         lr->lr_res_error = lr_res_error;
 618                                                 }
 619                                         }
 620                                         lr_res_error = NULL;
 621                                 }
 622
 623                                 /* Check if V3 referral */
 624                                 if ( ber_peek_tag( &tmpber, &len ) == LDAP_TAG_REFERRAL ) {
 625                                         /* We have a V3 referral, assume we cannot chase it */
 626                                         v3ref = V3REF_TOAPP;
 627                                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS)
 628                                                          || (lr->lr_parent != NULL) )
 629                                         {
 630                                                 /* Assume referral not chased and return it to app */
 631                                                 v3ref = V3REF_TOAPP;
 632
 633                                                 /* Get the referral list */
 634                                                 if( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
 635                                                         rc = LDAP_DECODING_ERROR;
 636                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 637                                                         Debug( LDAP_DEBUG_TRACE,
 638                                                                 "read1msg: referral decode error, mark request completed, ld %p msgid %d\n",
 639                                                                 (void *)ld, lr->lr_msgid, 0);
 640                                                 } else {
 641                                                         /* Chase the referral
 642                                                          * Note: refs arrary is freed by ldap_chase_v3referrals
 643                                                          */
 644                                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 645                                                                 0, &lr->lr_res_error, &hadref );
 646                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 647                                                         Debug( LDAP_DEBUG_TRACE,
 648                                                                 "read1msg: referral chased, mark request completed, ld %p msgid %d\n",
 649                                                                 (void *)ld, lr->lr_msgid, 0);
 650                                                         if( refer_cnt > 0) {
 651                                                                 /* Referral successfully chased */
 652                                                                 v3ref = V3REF_SUCCESS;
 653                                                         }
 654                                                 }
 655                                         }
 656                                 }
 657
 658                                 if( lr->lr_res_matched != NULL ) {
 659                                         LDAP_FREE( lr->lr_res_matched );
 660                                         lr->lr_res_matched = NULL;
 661                                 }
 662                                 if( lr->lr_res_error != NULL ) {
 663                                         LDAP_FREE( lr->lr_res_error );
 664                                         lr->lr_res_error = NULL;
 665                                 }
 666                         }
 667                 }
 668         }
 669
 670         /* All results that just return a status, i.e. don't return data
 671          * go through the following code.  This code also chases V2 referrals
 672          * and checks if all referrals have been chased.
 673          */
 674         if ( (tag != LDAP_RES_SEARCH_ENTRY) && (v3ref != V3REF_TOAPP) &&
 675                 (tag != LDAP_RES_INTERMEDIATE ))
 676         {
 677                 /* For a v3 search referral/reference, only come here if already chased it */
 678                 if ( ld->ld_version >= LDAP_VERSION2 &&
 679                         ( lr->lr_parent != NULL ||
 680                         LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ) )
 681                 {
 682                         char            *lr_res_error = NULL;
 683
 684                         tmpber = *ber;  /* struct copy */
 685                         if ( v3ref == V3REF_SUCCESS ) {
 686                                 /* V3 search reference or V3 referral
 687                                  * sucessfully chased. If this message
 688                                  * is a search result, then it has no more
 689                                  * outstanding referrals.
 690                                  */
 691                                 if ( tag == LDAP_RES_SEARCH_RESULT )
 692                                         refer_cnt = 0;
 693                         } else if ( ber_scanf( &tmpber, "{eAA}", &lderr,
 694                                 &lr->lr_res_matched, &lr_res_error )
 695                                 != LBER_ERROR )
 696                         {
 697                                 if ( lr_res_error != NULL ) {
 698                                         if ( lr->lr_res_error != NULL ) {
 699                                                 (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 700                                                 LDAP_FREE( (char *)lr_res_error );
 701                                         } else {
 702                                                 lr->lr_res_error = lr_res_error;
 703                                         }
 704                                         lr_res_error = NULL;
 705                                 }
 706
 707                                 switch ( lderr ) {
 708                                 case LDAP_SUCCESS:
 709                                 case LDAP_COMPARE_TRUE:
 710                                 case LDAP_COMPARE_FALSE:
 711                                         break;
 712
 713                                 default:
 714                                         if ( lr->lr_res_error == NULL
 715                                                 || lr->lr_res_error[ 0 ] == '\0' )
 716                                         {
 717                                                 break;
 718                                         }
 719
 720                                         /* referrals are in error string */
 721                                         refer_cnt = ldap_chase_referrals( ld, lr,
 722                                                 &lr->lr_res_error, -1, &hadref );
 723                                         lr->lr_status = LDAP_REQST_COMPLETED;
 724                                         Debug( LDAP_DEBUG_TRACE,
 725                                                 "read1msg:  V2 referral chased, "
 726                                                 "mark request completed, id = %d\n",
 727                                                 lr->lr_msgid, 0, 0 );
 728                                         break;
 729                                 }
 730
 731                                 /* save errno, message, and matched string */
 732                                 if ( !hadref || lr->lr_res_error == NULL ) {
 733                                         lr->lr_res_errno = ( lderr ==
 734                                         LDAP_PARTIAL_RESULTS ) ? LDAP_SUCCESS
 735                                         : lderr;
 736                                 } else if ( ld->ld_errno != LDAP_SUCCESS ) {
 737                                         lr->lr_res_errno = ld->ld_errno;
 738                                 } else {
 739                                         lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
 740                                 }
 741
 742                                 Debug( LDAP_DEBUG_TRACE, "new result:  "
 743                                         "res_errno: %d, "
 744                                         "res_error: <%s>, "
 745                                         "res_matched: <%s>\n",
 746                                         lr->lr_res_errno,
 747                                         lr->lr_res_error ? lr->lr_res_error : "",
 748                                         lr->lr_res_matched ? lr->lr_res_matched : "" );
 749                         }
 750
 751                         /* in any case, don't leave any lr_res_error 'round */
 752                         if ( lr_res_error ) {
 753                                 LDAP_FREE( lr_res_error );
 754                         }
 755                 }
 756
 757                 Debug( LDAP_DEBUG_TRACE,
 758                         "read1msg: ld %p %d new referrals\n",
 759                         (void *)ld, refer_cnt, 0 );
 760
 761                 if ( refer_cnt != 0 ) { /* chasing referrals */
 762                         ber_free( ber, 1 );
 763                         ber = NULL;
 764                         if ( refer_cnt < 0 ) {
 765                                 return( -1 );   /* fatal error */
 766                         }
 767                         lr->lr_res_errno = LDAP_SUCCESS; /* sucessfully chased referral */
 768                 } else {
 769                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
 770                                 /* request without any referrals */
 771                                 simple_request = ( hadref ? 0 : 1 );
 772                         } else {
 773                                 /* request with referrals or child request */
 774                                 ber_free( ber, 1 );
 775                                 ber = NULL;
 776                         }
 777
 778                         lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
 779                         Debug( LDAP_DEBUG_TRACE,
 780                                 "read1msg:  mark request completed, ld %p msgid %d\n",
 781                                 (void *)ld, lr->lr_msgid, 0);
 782                         while ( lr->lr_parent != NULL ) {
 783                                 merge_error_info( ld, lr->lr_parent, lr );
 784
 785                                 lr = lr->lr_parent;
 786                                 if ( --lr->lr_outrefcnt > 0 ) {
 787                                         break;  /* not completely done yet */
 788                                 }
 789                         }
 790
 791                         /* Check if all requests are finished, lr is now parent */
 792                         tmplr = lr;
 793                         if ( tmplr->lr_status == LDAP_REQST_COMPLETED ) {
 794                                 for ( tmplr=lr->lr_child;
 795                                         tmplr != NULL;
 796                                         tmplr=tmplr->lr_refnext)
 797                                 {
 798                                         if ( tmplr->lr_status != LDAP_REQST_COMPLETED ) break;
 799                                 }
 800                         }
 801
 802                         /* This is the parent request if the request has referrals */
 803                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL &&
 804                                 tmplr == NULL )
 805                         {
 806                                 id = lr->lr_msgid;
 807                                 tag = lr->lr_res_msgtype;
 808                                 Debug( LDAP_DEBUG_ANY, "request done: ld %p msgid %ld\n",
 809                                         (void *)ld, (long) id, 0 );
 810 Debug( LDAP_DEBUG_TRACE,
 811 "res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 812 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 813 lr->lr_res_matched ? lr->lr_res_matched : "" );
 814                                 if ( !simple_request ) {
 815                                         ber_free( ber, 1 );
 816                                         ber = NULL;
 817                                         if ( build_result_ber( ld, &ber, lr )
 818                                             == LBER_ERROR )
 819                                         {
 820                                                 rc = -1; /* fatal error */
 821                                         }
 822                                 }
 823
 824 #ifdef LDAP_R_COMPILE
 825                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 826 #endif
 827                                 ldap_free_request( ld, lr );
 828 #ifdef LDAP_R_COMPILE
 829                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 830 #endif
 831                         }
 832
 833                         if ( lc != NULL ) {
 834 #ifdef LDAP_R_COMPILE
 835                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 836 #endif
 837                                 ldap_free_connection( ld, lc, 0, 1 );
 838 #ifdef LDAP_R_COMPILE
 839                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 840 #endif
 841                                 lc = *lcp = NULL;
 842                         }
 843                 }
 844         }
 845
 846         if ( ber == NULL ) {
 847                 return( rc );
 848         }
 849
 850         /* make a new ldap message */
 851         newmsg = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) );
 852         if ( newmsg == NULL ) {
 853                 ld->ld_errno = LDAP_NO_MEMORY;
 854                 return( -1 );
 855         }
 856         newmsg->lm_msgid = (int)id;
 857         newmsg->lm_msgtype = tag;
 858         newmsg->lm_ber = ber;
 859         newmsg->lm_chain_tail = newmsg;
 860
 861 #ifdef LDAP_CONNECTIONLESS
 862         /* CLDAP replies all fit in a single datagram. In LDAPv2 RFC1798
 863          * the responses are all a sequence wrapped in one message. In
 864          * LDAPv3 each response is in its own message. The datagram must
 865          * end with a SearchResult. We can't just parse each response in
 866          * separate calls to try_read1msg because the header info is only
 867          * present at the beginning of the datagram, not at the beginning
 868          * of each response. So parse all the responses at once and queue
 869          * them up, then pull off the first response to return to the
 870          * caller when all parsing is complete.
 871          */
 872         if ( LDAP_IS_UDP(ld) ) {
 873                 /* If not a result, look for more */
 874                 if ( tag != LDAP_RES_SEARCH_RESULT ) {
 875                         int ok = 0;
 876                         moremsgs = 1;
 877                         if (isv2) {
 878                                 /* LDAPv2: dup the current ber, skip past the current
 879                                  * response, and see if there are any more after it.
 880                                  */
 881                                 ber = ber_dup( ber );
 882                                 ber_scanf( ber, "x" );
 883                                 if (ber_peek_tag(ber, &len) != LBER_DEFAULT) {
 884                                         /* There's more - dup the ber buffer so they can all be
 885                                          * individually freed by ldap_msgfree.
 886                                          */
 887                                         struct berval bv;
 888                                         ber_get_option(ber, LBER_OPT_BER_REMAINING_BYTES, &len);
 889                                         bv.bv_val = LDAP_MALLOC(len);
 890                                         if (bv.bv_val) {
 891                                                 ok=1;
 892                                                 ber_read(ber, bv.bv_val, len);
 893                                                 bv.bv_len = len;
 894                                                 ber_init2(ber, &bv, ld->ld_lberoptions );
 895                                         }
 896                                 }
 897                         } else {
 898                                 /* LDAPv3: Just allocate a new ber. Since this is a buffered
 899                                  * datagram, if the sockbuf is readable we still have data
 900                                  * to parse.
 901                                  */
 902                                 ber = ldap_alloc_ber_with_options( ld );
 903                                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) ok = 1;
 904                         }
 905                         /* set up response chain */
 906                         if ( tmp == NULL ) {
 907                                 newmsg->lm_next = ld->ld_responses;
 908                                 ld->ld_responses = newmsg;
 909                                 chain_head = newmsg;
 910                         } else {
 911                                 tmp->lm_chain = newmsg;
 912                         }
 913                         chain_head->lm_chain_tail = newmsg;
 914                         tmp = newmsg;
 915                         /* "ok" means there's more to parse */
 916                         if (ok) {
 917                                 if (isv2) goto nextresp2;
 918                                 else goto nextresp3;
 919                         } else {
 920                                 /* got to end of datagram without a SearchResult. Free
 921                                  * our dup'd ber, but leave any buffer alone. For v2 case,
 922                                  * the previous response is still using this buffer. For v3,
 923                                  * the new ber has no buffer to free yet.
 924                                  */
 925                                 ber_free(ber, 0);
 926                                 return -1;
 927                         }
 928                 } else if ( moremsgs ) {
 929                 /* got search result, and we had multiple responses in 1 datagram.
 930                  * stick the result onto the end of the chain, and then pull the
 931                  * first response off the head of the chain.
 932                  */
 933                         tmp->lm_chain = newmsg;
 934                         chain_head->lm_chain_tail = newmsg;
 935                         *result = chkResponseList( ld, msgid, all );
 936                         ld->ld_errno = LDAP_SUCCESS;
 937                         return( (*result)->lm_msgtype );
 938                 }
 939         }
 940 #endif /* LDAP_CONNECTIONLESS */
 941
 942         /* is this the one we're looking for? */
 943         if ( msgid == LDAP_RES_ANY || id == msgid ) {
 944                 if ( all == LDAP_MSG_ONE
 945                     || (newmsg->lm_msgtype != LDAP_RES_SEARCH_RESULT
 946                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 947                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_REFERENCE) ) {
 948                         *result = newmsg;
 949                         ld->ld_errno = LDAP_SUCCESS;
 950                         return( tag );
 951                 } else if ( newmsg->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
 952                         foundit = 1;    /* return the chain later */
 953                 }
 954         }
 955
 956         /*
 957          * if not, we must add it to the list of responses.  if
 958          * the msgid is already there, it must be part of an existing
 959          * search response.
 960          */
 961
 962         prev = NULL;
 963         for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
 964                 if ( l->lm_msgid == newmsg->lm_msgid )
 965                         break;
 966                 prev = l;
 967         }
 968
 969         /* not part of an existing search response */
 970         if ( l == NULL ) {
 971                 if ( foundit ) {
 972                         *result = newmsg;
 973                         goto exit;
 974                 }
 975
 976                 newmsg->lm_next = ld->ld_responses;
 977                 ld->ld_responses = newmsg;
 978                 goto exit;
 979         }
 980
 981         Debug( LDAP_DEBUG_TRACE, "adding response ld %p msgid %ld type %ld:\n",
 982                 (void *)ld, (long) newmsg->lm_msgid, (long) newmsg->lm_msgtype );
 983
 984         /* part of a search response - add to end of list of entries */
 985         l->lm_chain_tail->lm_chain = newmsg;
 986         l->lm_chain_tail = newmsg;
 987
 988         /* return the whole chain if that's what we were looking for */
 989         if ( foundit ) {
 990                 if ( prev == NULL )
 991                         ld->ld_responses = l->lm_next;
 992                 else
 993                         prev->lm_next = l->lm_next;
 994                 *result = l;
 995         }
 996
 997 exit:
 998         if ( foundit ) {
 999                 ld->ld_errno = LDAP_SUCCESS;
1000                 return( tag );
1001         }
1002         if ( lc && ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
1003                 goto retry;
1004         }
1005         return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
1006 }
1007
1008
1009 static ber_tag_t
1010 build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
1011 {
1012         ber_len_t       len;
1013         ber_tag_t       tag;
1014         ber_int_t       along;
1015         BerElement *ber;
1016
1017         *bp = NULL;
1018         ber = ldap_alloc_ber_with_options( ld );
1019
1020         if( ber == NULL ) {
1021                 ld->ld_errno = LDAP_NO_MEMORY;
1022                 return LBER_ERROR;
1023         }
1024
1025         if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
1026                 lr->lr_res_msgtype, lr->lr_res_errno,
1027                 lr->lr_res_matched ? lr->lr_res_matched : "",
1028                 lr->lr_res_error ? lr->lr_res_error : "" ) == -1 )
1029         {
1030                 ld->ld_errno = LDAP_ENCODING_ERROR;
1031                 ber_free(ber, 1);
1032                 return( LBER_ERROR );
1033         }
1034
1035         ber_reset( ber, 1 );
1036
1037         if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
1038                 ld->ld_errno = LDAP_DECODING_ERROR;
1039                 ber_free(ber, 1);
1040                 return( LBER_ERROR );
1041         }
1042
1043         if ( ber_get_enum( ber, &along ) == LBER_ERROR ) {
1044                 ld->ld_errno = LDAP_DECODING_ERROR;
1045                 ber_free(ber, 1);
1046                 return( LBER_ERROR );
1047         }
1048
1049         tag = ber_peek_tag( ber, &len );
1050
1051         if ( tag == LBER_ERROR ) {
1052                 ld->ld_errno = LDAP_DECODING_ERROR;
1053                 ber_free(ber, 1);
1054                 return( LBER_ERROR );
1055         }
1056
1057         *bp = ber;
1058         return tag;
1059 }
1060
1061
1062 static void
1063 merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
1064 {
1065 /*
1066  * Merge error information in "lr" with "parentr" error code and string.
1067  */
1068         if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
1069                 parentr->lr_res_errno = lr->lr_res_errno;
1070                 if ( lr->lr_res_error != NULL ) {
1071                         (void)ldap_append_referral( ld, &parentr->lr_res_error,
1072                             lr->lr_res_error );
1073                 }
1074         } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
1075                 parentr->lr_res_errno == LDAP_SUCCESS )
1076         {
1077                 parentr->lr_res_errno = lr->lr_res_errno;
1078                 if ( parentr->lr_res_error != NULL ) {
1079                         LDAP_FREE( parentr->lr_res_error );
1080                 }
1081                 parentr->lr_res_error = lr->lr_res_error;
1082                 lr->lr_res_error = NULL;
1083                 if ( LDAP_NAME_ERROR( lr->lr_res_errno ) ) {
1084                         if ( parentr->lr_res_matched != NULL ) {
1085                                 LDAP_FREE( parentr->lr_res_matched );
1086                         }
1087                         parentr->lr_res_matched = lr->lr_res_matched;
1088                         lr->lr_res_matched = NULL;
1089                 }
1090         }
1091
1092         Debug( LDAP_DEBUG_TRACE, "merged parent (id %d) error info:  ",
1093             parentr->lr_msgid, 0, 0 );
1094         Debug( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
1095             parentr->lr_res_errno, parentr->lr_res_error ?
1096             parentr->lr_res_error : "", parentr->lr_res_matched ?
1097             parentr->lr_res_matched : "" );
1098 }
1099
1100
1101
1102 int
1103 ldap_msgtype( LDAPMessage *lm )
1104 {
1105         assert( lm != NULL );
1106         return ( lm != NULL ) ? (int)lm->lm_msgtype : -1;
1107 }
1108
1109
1110 int
1111 ldap_msgid( LDAPMessage *lm )
1112 {
1113         assert( lm != NULL );
1114
1115         return ( lm != NULL ) ? lm->lm_msgid : -1;
1116 }
1117
1118
1119 char * ldap_int_msgtype2str( ber_tag_t tag )
1120 {
1121         switch( tag ) {
1122         case LDAP_RES_ADD: return "add";
1123         case LDAP_RES_BIND: return "bind";
1124         case LDAP_RES_COMPARE: return "compare";
1125         case LDAP_RES_DELETE: return "delete";
1126         case LDAP_RES_EXTENDED: return "extended-result";
1127         case LDAP_RES_INTERMEDIATE: return "intermediate";
1128         case LDAP_RES_MODIFY: return "modify";
1129         case LDAP_RES_RENAME: return "rename";
1130         case LDAP_RES_SEARCH_ENTRY: return "search-entry";
1131         case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
1132         case LDAP_RES_SEARCH_RESULT: return "search-result";
1133         }
1134         return "unknown";
1135 }
1136
1137 int
1138 ldap_msgfree( LDAPMessage *lm )
1139 {
1140         LDAPMessage     *next;
1141         int             type = 0;
1142
1143         Debug( LDAP_DEBUG_TRACE, "ldap_msgfree\n", 0, 0, 0 );
1144
1145         for ( ; lm != NULL; lm = next ) {
1146                 next = lm->lm_chain;
1147                 type = lm->lm_msgtype;
1148                 ber_free( lm->lm_ber, 1 );
1149                 LDAP_FREE( (char *) lm );
1150         }
1151
1152         return( type );
1153 }
1154
1155 /*
1156  * ldap_msgdelete - delete a message.  It returns:
1157  *      0       if the entire message was deleted
1158  *      -1      if the message was not found, or only part of it was found
1159  */
1160 int
1161 ldap_msgdelete( LDAP *ld, int msgid )
1162 {
1163         LDAPMessage     *lm, *prev;
1164         int rc = 0;
1165
1166         assert( ld != NULL );
1167
1168         Debug( LDAP_DEBUG_TRACE, "ldap_msgdelete\n", 0, 0, 0 );
1169
1170         prev = NULL;
1171 #ifdef LDAP_R_COMPILE
1172         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
1173 #endif
1174         for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
1175                 if ( lm->lm_msgid == msgid )
1176                         break;
1177                 prev = lm;
1178         }
1179
1180         if ( lm == NULL ) {
1181                 rc = -1;
1182         } else {
1183                 if ( prev == NULL )
1184                         ld->ld_responses = lm->lm_next;
1185                 else
1186                         prev->lm_next = lm->lm_next;
1187         }
1188 #ifdef LDAP_R_COMPILE
1189         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
1190 #endif
1191         if ( lm && ldap_msgfree( lm ) == LDAP_RES_SEARCH_ENTRY )
1192                 rc = -1;
1193
1194         return( rc );
1195 }
1196
1197
1198 /*
1199  * ldap_abandoned
1200  *
1201  * return 1 if message msgid is waiting to be abandoned, 0 otherwise
1202  *
1203  * expects ld_res_mutex to be locked
1204  */
1205 static int
1206 ldap_abandoned( LDAP *ld, ber_int_t msgid )
1207 {
1208         int     i;
1209
1210 #ifdef LDAP_R_COMPILE
1211         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1212 #endif
1213
1214         if ( ld->ld_abandoned == NULL )
1215                 return( 0 );
1216
1217         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1218                 if ( ld->ld_abandoned[i] == msgid )
1219                         return( 1 );
1220
1221         return( 0 );
1222 }
1223
1224
1225 /*
1226  * ldap_mark_abandoned
1227  *
1228  * expects ld_res_mutex to be locked
1229  */
1230 static int
1231 ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
1232 {
1233         int     i;
1234
1235 #ifdef LDAP_R_COMPILE
1236         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1237 #endif
1238
1239         if ( ld->ld_abandoned == NULL )
1240                 return( -1 );
1241
1242         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1243                 if ( ld->ld_abandoned[i] == msgid )
1244                         break;
1245
1246         if ( ld->ld_abandoned[i] == -1 )
1247                 return( -1 );
1248
1249         for ( ; ld->ld_abandoned[i] != -1; i++ ) {
1250                 ld->ld_abandoned[i] = ld->ld_abandoned[i + 1];
1251         }
1252
1253         return( 0 );
1254 }