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                                                 sock_errno(), 0, 0 );
 326                                 }
 327 #endif
 328
 329                                 if ( rc == 0 || ( rc == -1 && (
 330                                         !LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART)
 331                                                 || sock_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
 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;
 358                                                 rc == LDAP_MSG_X_KEEP_LOOKING && lc != NULL; )
 359                                         {
 360                                                 if ( lc->lconn_status == LDAP_CONNST_CONNECTED &&
 361                                                         ldap_is_read_ready( ld, lc->lconn_sb ) )
 362                                                 {
 363 #ifdef LDAP_R_COMPILE
 364                                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 365 #endif
 366                                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 367 #ifdef LDAP_R_COMPILE
 368                                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 369 #endif
 370                                                         if ( lc == NULL ) {
 371                                                                 /* if lc gets free()'d,
 372                                                                  * there's no guarantee
 373                                                                  * lc->lconn_next is still
 374                                                                  * sane; better restart
 375                                                                  * (ITS#4405) */
 376                                                                 lc = ld->ld_conns;
 377
 378                                                                 /* don't get to next conn! */
 379                                                                 break;
 380                                                         }
 381                                                 }
 382
 383                                                 /* next conn */
 384                                                 lc = lc->lconn_next;
 385                                         }
 386 #ifdef LDAP_R_COMPILE
 387                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 388 #endif
 389                                 }
 390                         }
 391                 }
 392
 393                 if ( rc == LDAP_MSG_X_KEEP_LOOKING && tvp != NULL ) {
 394                         tmp_time = time( NULL );
 395                         tv0.tv_sec -= ( tmp_time - start_time );
 396                         if ( tv0.tv_sec <= 0 ) {
 397                                 rc = 0; /* timed out */
 398                                 ld->ld_errno = LDAP_TIMEOUT;
 399                                 break;
 400                         }
 401                         tv.tv_sec = tv0.tv_sec;
 402
 403                         Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p %ld secs to go\n",
 404                                 (void *)ld, (long) tv.tv_sec, 0 );
 405                         start_time = tmp_time;
 406                 }
 407         }
 408
 409         return( rc );
 410 }
 411
 412
 413 static ber_tag_t
 414 try_read1msg(
 415         LDAP *ld,
 416         ber_int_t msgid,
 417         int all,
 418         LDAPConn **lcp,
 419         LDAPMessage **result )
 420 {
 421         BerElement      *ber;
 422         LDAPMessage     *newmsg, *l, *prev;
 423         ber_int_t       id;
 424         ber_tag_t       tag;
 425         ber_len_t       len;
 426         int             foundit = 0;
 427         LDAPRequest     *lr, *tmplr;
 428         LDAPConn        *lc;
 429         BerElement      tmpber;
 430         int             rc, refer_cnt, hadref, simple_request;
 431         ber_int_t       lderr;
 432
 433 #ifdef LDAP_CONNECTIONLESS
 434         LDAPMessage     *tmp = NULL, *chain_head = NULL;
 435         int             moremsgs = 0, isv2 = 0;
 436 #endif
 437
 438         /*
 439          * v3ref = flag for V3 referral / search reference
 440          * 0 = not a ref, 1 = sucessfully chased ref, -1 = pass ref to application
 441          */
 442         enum {
 443                 V3REF_NOREF     = 0,
 444                 V3REF_SUCCESS   = 1,
 445                 V3REF_TOAPP     = -1
 446         }       v3ref;
 447
 448         assert( ld != NULL );
 449         assert( lcp != NULL );
 450         assert( *lcp != NULL );
 451
 452 #ifdef LDAP_R_COMPILE
 453         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 454 #endif
 455
 456         Debug( LDAP_DEBUG_TRACE, "read1msg: ld %p msgid %d all %d\n",
 457                 (void *)ld, msgid, all );
 458
 459         lc = *lcp;
 460
 461 retry:
 462         if ( lc->lconn_ber == NULL ) {
 463                 lc->lconn_ber = ldap_alloc_ber_with_options( ld );
 464
 465                 if( lc->lconn_ber == NULL ) {
 466                         return -1;
 467                 }
 468         }
 469
 470         ber = lc->lconn_ber;
 471         assert( LBER_VALID (ber) );
 472
 473         /* get the next message */
 474         sock_errset(0);
 475 #ifdef LDAP_CONNECTIONLESS
 476         if ( LDAP_IS_UDP(ld) ) {
 477                 struct sockaddr from;
 478                 ber_int_sb_read( lc->lconn_sb, &from, sizeof(struct sockaddr) );
 479                 if (ld->ld_options.ldo_version == LDAP_VERSION2) isv2 = 1;
 480         }
 481 nextresp3:
 482 #endif
 483         tag = ber_get_next( lc->lconn_sb, &len, ber );
 484         switch ( tag ) {
 485         case LDAP_TAG_MESSAGE:
 486                 /*
 487                  * We read a complete message.
 488                  * The connection should no longer need this ber.
 489                  */
 490                 lc->lconn_ber = NULL;
 491                 break;
 492
 493         case LBER_DEFAULT:
 494 #ifdef LDAP_DEBUG
 495                 Debug( LDAP_DEBUG_CONNS,
 496                         "ber_get_next failed.\n", 0, 0, 0 );
 497 #endif
 498 #ifdef EWOULDBLOCK
 499                 if ( sock_errno() == EWOULDBLOCK ) return LDAP_MSG_X_KEEP_LOOKING;
 500 #endif
 501 #ifdef EAGAIN
 502                 if ( sock_errno() == EAGAIN ) return LDAP_MSG_X_KEEP_LOOKING;
 503 #endif
 504                 ld->ld_errno = LDAP_SERVER_DOWN;
 505                 return -1;
 506
 507         default:
 508                 ld->ld_errno = LDAP_LOCAL_ERROR;
 509                 return -1;
 510         }
 511
 512         /* message id */
 513         if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
 514                 ber_free( ber, 1 );
 515                 ld->ld_errno = LDAP_DECODING_ERROR;
 516                 return( -1 );
 517         }
 518
 519         /* if it's been abandoned, toss it */
 520         if ( ldap_abandoned( ld, id ) ) {
 521                 Debug( LDAP_DEBUG_ANY, "abandoned ld %p msgid %ld\n",
 522                         (void *)ld, (long) id, 0);
 523 retry_ber:
 524                 ber_free( ber, 1 );
 525                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 526                         goto retry;
 527                 }
 528                 return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
 529         }
 530
 531         lr = ldap_find_request_by_msgid( ld, id );
 532         if ( lr == NULL ) {
 533                 Debug( LDAP_DEBUG_ANY,
 534                         "no request for response on ld %p msgid %ld (tossing)\n",
 535                         (void *)ld, (long)id, 0 );
 536                 goto retry_ber;
 537         }
 538 #ifdef LDAP_CONNECTIONLESS
 539         if (LDAP_IS_UDP(ld) && isv2) {
 540                 ber_scanf(ber, "x{");
 541         }
 542 nextresp2:
 543 #endif
 544         /* the message type */
 545         if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
 546                 ld->ld_errno = LDAP_DECODING_ERROR;
 547                 ber_free( ber, 1 );
 548                 return( -1 );
 549         }
 550
 551         Debug( LDAP_DEBUG_TRACE,
 552                 "read1msg: ld %p msgid %ld message type %s\n",
 553                 (void *)ld, (long) lr->lr_msgid, ldap_int_msgtype2str( tag ));
 554
 555         id = lr->lr_origid;
 556         refer_cnt = 0;
 557         hadref = simple_request = 0;
 558         rc = LDAP_MSG_X_KEEP_LOOKING;   /* default is to keep looking (no response found) */
 559         lr->lr_res_msgtype = tag;
 560
 561         /*
 562          * This code figures out if we are going to chase a
 563          * referral / search reference, or pass it back to the application
 564          */
 565         v3ref = V3REF_NOREF;    /* Assume not a V3 search reference/referral */
 566         if( (tag != LDAP_RES_SEARCH_ENTRY) && (ld->ld_version > LDAP_VERSION2) ) {
 567                 BerElement      tmpber = *ber;  /* struct copy */
 568                 char **refs = NULL;
 569
 570                 if( tag == LDAP_RES_SEARCH_REFERENCE ) {
 571                         /* This is a V3 search reference */
 572                         /* Assume we do not chase the reference,
 573                          * but pass it to application */
 574                         v3ref = V3REF_TOAPP;
 575                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
 576                                         (lr->lr_parent != NULL) )
 577                         {
 578                                 /* Get the referral list */
 579                                 if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
 580                                         rc = LDAP_DECODING_ERROR;
 581
 582                                 } else {
 583                                         /* Note: refs array is freed by ldap_chase_v3referrals */
 584                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 585                                             1, &lr->lr_res_error, &hadref );
 586                                         if ( refer_cnt > 0 ) {
 587                                                 /* sucessfully chased reference */
 588                                                 /* If haven't got end search, set chasing referrals */
 589                                                 if ( lr->lr_status != LDAP_REQST_COMPLETED ) {
 590                                                         lr->lr_status = LDAP_REQST_CHASINGREFS;
 591                                                         Debug( LDAP_DEBUG_TRACE,
 592                                                                 "read1msg:  search ref chased, "
 593                                                                 "mark request chasing refs, "
 594                                                                 "id = %d\n",
 595                                                                 lr->lr_msgid, 0, 0);
 596                                                 }
 597
 598                                                 /* We sucessfully chased the reference */
 599                                                 v3ref = V3REF_SUCCESS;
 600                                         }
 601                                 }
 602                         }
 603
 604                 } else {
 605                         /* Check for V3 referral */
 606                         ber_len_t       len;
 607                         char            *lr_res_error = NULL;
 608
 609                         if ( ber_scanf( &tmpber, "{eAA",/*}*/ &lderr,
 610                                     &lr->lr_res_matched, &lr_res_error )
 611                                     != LBER_ERROR )
 612                         {
 613                                 if ( lr_res_error != NULL ) {
 614                                         if ( lr->lr_res_error != NULL ) {
 615                                                 (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 616                                                 LDAP_FREE( (char *)lr_res_error );
 617
 618                                         } else {
 619                                                 lr->lr_res_error = lr_res_error;
 620                                         }
 621                                         lr_res_error = NULL;
 622                                 }
 623
 624                                 /* Check if V3 referral */
 625                                 if ( ber_peek_tag( &tmpber, &len ) == LDAP_TAG_REFERRAL ) {
 626                                         /* We have a V3 referral, assume we cannot chase it */
 627                                         v3ref = V3REF_TOAPP;
 628                                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS)
 629                                                          || (lr->lr_parent != NULL) )
 630                                         {
 631                                                 /* Assume referral not chased and return it to app */
 632                                                 v3ref = V3REF_TOAPP;
 633
 634                                                 /* Get the referral list */
 635                                                 if( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
 636                                                         rc = LDAP_DECODING_ERROR;
 637                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 638                                                         Debug( LDAP_DEBUG_TRACE,
 639                                                                 "read1msg: referral decode error, mark request completed, ld %p msgid %d\n",
 640                                                                 (void *)ld, lr->lr_msgid, 0);
 641
 642                                                 } else {
 643                                                         /* Chase the referral
 644                                                          * Note: refs arrary is freed by ldap_chase_v3referrals
 645                                                          */
 646                                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 647                                                                 0, &lr->lr_res_error, &hadref );
 648                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 649                                                         Debug( LDAP_DEBUG_TRACE,
 650                                                                 "read1msg: referral chased, mark request completed, ld %p msgid %d\n",
 651                                                                 (void *)ld, lr->lr_msgid, 0);
 652                                                         if( refer_cnt > 0) {
 653                                                                 /* Referral successfully chased */
 654                                                                 v3ref = V3REF_SUCCESS;
 655                                                         }
 656                                                 }
 657                                         }
 658                                 }
 659
 660                                 if( lr->lr_res_matched != NULL ) {
 661                                         LDAP_FREE( lr->lr_res_matched );
 662                                         lr->lr_res_matched = NULL;
 663                                 }
 664
 665                                 if( lr->lr_res_error != NULL ) {
 666                                         LDAP_FREE( lr->lr_res_error );
 667                                         lr->lr_res_error = NULL;
 668                                 }
 669                         }
 670                 }
 671         }
 672
 673         /* All results that just return a status, i.e. don't return data
 674          * go through the following code.  This code also chases V2 referrals
 675          * and checks if all referrals have been chased.
 676          */
 677         if ( (tag != LDAP_RES_SEARCH_ENTRY) && (v3ref != V3REF_TOAPP) &&
 678                 (tag != LDAP_RES_INTERMEDIATE ))
 679         {
 680                 /* For a v3 search referral/reference, only come here if already chased it */
 681                 if ( ld->ld_version >= LDAP_VERSION2 &&
 682                         ( lr->lr_parent != NULL ||
 683                         LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ) )
 684                 {
 685                         char            *lr_res_error = NULL;
 686
 687                         tmpber = *ber;  /* struct copy */
 688                         if ( v3ref == V3REF_SUCCESS ) {
 689                                 /* V3 search reference or V3 referral
 690                                  * sucessfully chased. If this message
 691                                  * is a search result, then it has no more
 692                                  * outstanding referrals.
 693                                  */
 694                                 if ( tag == LDAP_RES_SEARCH_RESULT )
 695                                         refer_cnt = 0;
 696
 697                         } else if ( ber_scanf( &tmpber, "{eAA}", &lderr,
 698                                 &lr->lr_res_matched, &lr_res_error )
 699                                 != LBER_ERROR )
 700                         {
 701                                 if ( lr_res_error != NULL ) {
 702                                         if ( lr->lr_res_error != NULL ) {
 703                                                 (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 704                                                 LDAP_FREE( (char *)lr_res_error );
 705                                         } else {
 706                                                 lr->lr_res_error = lr_res_error;
 707                                         }
 708                                         lr_res_error = NULL;
 709                                 }
 710
 711                                 switch ( lderr ) {
 712                                 case LDAP_SUCCESS:
 713                                 case LDAP_COMPARE_TRUE:
 714                                 case LDAP_COMPARE_FALSE:
 715                                         break;
 716
 717                                 default:
 718                                         if ( lr->lr_res_error == NULL
 719                                                 || lr->lr_res_error[ 0 ] == '\0' )
 720                                         {
 721                                                 break;
 722                                         }
 723
 724                                         /* referrals are in error string */
 725                                         refer_cnt = ldap_chase_referrals( ld, lr,
 726                                                 &lr->lr_res_error, -1, &hadref );
 727                                         lr->lr_status = LDAP_REQST_COMPLETED;
 728                                         Debug( LDAP_DEBUG_TRACE,
 729                                                 "read1msg:  V2 referral chased, "
 730                                                 "mark request completed, id = %d\n",
 731                                                 lr->lr_msgid, 0, 0 );
 732                                         break;
 733                                 }
 734
 735                                 /* save errno, message, and matched string */
 736                                 if ( !hadref || lr->lr_res_error == NULL ) {
 737                                         lr->lr_res_errno = ( lderr ==
 738                                         LDAP_PARTIAL_RESULTS ) ? LDAP_SUCCESS
 739                                         : lderr;
 740
 741                                 } else if ( ld->ld_errno != LDAP_SUCCESS ) {
 742                                         lr->lr_res_errno = ld->ld_errno;
 743
 744                                 } else {
 745                                         lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
 746                                 }
 747
 748                                 Debug( LDAP_DEBUG_TRACE, "new result:  "
 749                                         "res_errno: %d, "
 750                                         "res_error: <%s>, "
 751                                         "res_matched: <%s>\n",
 752                                         lr->lr_res_errno,
 753                                         lr->lr_res_error ? lr->lr_res_error : "",
 754                                         lr->lr_res_matched ? lr->lr_res_matched : "" );
 755                         }
 756
 757                         /* in any case, don't leave any lr_res_error 'round */
 758                         if ( lr_res_error ) {
 759                                 LDAP_FREE( lr_res_error );
 760                         }
 761                 }
 762
 763                 Debug( LDAP_DEBUG_TRACE,
 764                         "read1msg: ld %p %d new referrals\n",
 765                         (void *)ld, refer_cnt, 0 );
 766
 767                 if ( refer_cnt != 0 ) { /* chasing referrals */
 768                         ber_free( ber, 1 );
 769                         ber = NULL;
 770                         if ( refer_cnt < 0 ) {
 771                                 ldap_return_request( ld, lr, 0 );
 772                                 return( -1 );   /* fatal error */
 773                         }
 774                         lr->lr_res_errno = LDAP_SUCCESS; /* sucessfully chased referral */
 775
 776                 } else {
 777                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
 778                                 /* request without any referrals */
 779                                 simple_request = ( hadref ? 0 : 1 );
 780
 781                         } else {
 782                                 /* request with referrals or child request */
 783                                 ber_free( ber, 1 );
 784                                 ber = NULL;
 785                         }
 786
 787                         lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
 788                         Debug( LDAP_DEBUG_TRACE,
 789                                 "read1msg:  mark request completed, ld %p msgid %d\n",
 790                                 (void *)ld, lr->lr_msgid, 0);
 791                         while ( lr->lr_parent != NULL ) {
 792                                 merge_error_info( ld, lr->lr_parent, lr );
 793
 794                                 lr = lr->lr_parent;
 795                                 if ( --lr->lr_outrefcnt > 0 ) {
 796                                         break;  /* not completely done yet */
 797                                 }
 798                         }
 799
 800                         /* Check if all requests are finished, lr is now parent */
 801                         tmplr = lr;
 802                         if ( tmplr->lr_status == LDAP_REQST_COMPLETED ) {
 803                                 for ( tmplr = lr->lr_child;
 804                                         tmplr != NULL;
 805                                         tmplr = tmplr->lr_refnext )
 806                                 {
 807                                         if ( tmplr->lr_status != LDAP_REQST_COMPLETED ) break;
 808                                 }
 809                         }
 810
 811                         /* This is the parent request if the request has referrals */
 812                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL &&
 813                                 tmplr == NULL )
 814                         {
 815                                 id = lr->lr_msgid;
 816                                 tag = lr->lr_res_msgtype;
 817                                 Debug( LDAP_DEBUG_ANY, "request done: ld %p msgid %ld\n",
 818                                         (void *)ld, (long) id, 0 );
 819 Debug( LDAP_DEBUG_TRACE,
 820 "res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 821 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 822 lr->lr_res_matched ? lr->lr_res_matched : "" );
 823                                 if ( !simple_request ) {
 824                                         ber_free( ber, 1 );
 825                                         ber = NULL;
 826                                         if ( build_result_ber( ld, &ber, lr )
 827                                             == LBER_ERROR )
 828                                         {
 829                                                 rc = -1; /* fatal error */
 830                                         }
 831                                 }
 832
 833                                 ldap_return_request( ld, lr, 1 );
 834                                 lr = NULL;
 835                         }
 836
 837                         if ( lc != NULL ) {
 838 #ifdef LDAP_R_COMPILE
 839                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 840 #endif
 841                                 ldap_free_connection( ld, lc, 0, 1 );
 842 #ifdef LDAP_R_COMPILE
 843                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 844 #endif
 845                                 lc = *lcp = NULL;
 846                         }
 847                 }
 848         }
 849
 850         if ( lr != NULL ) {
 851                 ldap_return_request( ld, lr, 0 );
 852                 lr = NULL;
 853         }
 854
 855         if ( ber == NULL ) {
 856                 return( rc );
 857         }
 858
 859         /* make a new ldap message */
 860         newmsg = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) );
 861         if ( newmsg == NULL ) {
 862                 ld->ld_errno = LDAP_NO_MEMORY;
 863                 return( -1 );
 864         }
 865         newmsg->lm_msgid = (int)id;
 866         newmsg->lm_msgtype = tag;
 867         newmsg->lm_ber = ber;
 868         newmsg->lm_chain_tail = newmsg;
 869
 870 #ifdef LDAP_CONNECTIONLESS
 871         /* CLDAP replies all fit in a single datagram. In LDAPv2 RFC1798
 872          * the responses are all a sequence wrapped in one message. In
 873          * LDAPv3 each response is in its own message. The datagram must
 874          * end with a SearchResult. We can't just parse each response in
 875          * separate calls to try_read1msg because the header info is only
 876          * present at the beginning of the datagram, not at the beginning
 877          * of each response. So parse all the responses at once and queue
 878          * them up, then pull off the first response to return to the
 879          * caller when all parsing is complete.
 880          */
 881         if ( LDAP_IS_UDP(ld) ) {
 882                 /* If not a result, look for more */
 883                 if ( tag != LDAP_RES_SEARCH_RESULT ) {
 884                         int ok = 0;
 885                         moremsgs = 1;
 886                         if (isv2) {
 887                                 /* LDAPv2: dup the current ber, skip past the current
 888                                  * response, and see if there are any more after it.
 889                                  */
 890                                 ber = ber_dup( ber );
 891                                 ber_scanf( ber, "x" );
 892                                 if (ber_peek_tag(ber, &len) != LBER_DEFAULT) {
 893                                         /* There's more - dup the ber buffer so they can all be
 894                                          * individually freed by ldap_msgfree.
 895                                          */
 896                                         struct berval bv;
 897                                         ber_get_option(ber, LBER_OPT_BER_REMAINING_BYTES, &len);
 898                                         bv.bv_val = LDAP_MALLOC(len);
 899                                         if (bv.bv_val) {
 900                                                 ok=1;
 901                                                 ber_read(ber, bv.bv_val, len);
 902                                                 bv.bv_len = len;
 903                                                 ber_init2(ber, &bv, ld->ld_lberoptions );
 904                                         }
 905                                 }
 906                         } else {
 907                                 /* LDAPv3: Just allocate a new ber. Since this is a buffered
 908                                  * datagram, if the sockbuf is readable we still have data
 909                                  * to parse.
 910                                  */
 911                                 ber = ldap_alloc_ber_with_options( ld );
 912                                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) ok = 1;
 913                         }
 914                         /* set up response chain */
 915                         if ( tmp == NULL ) {
 916                                 newmsg->lm_next = ld->ld_responses;
 917                                 ld->ld_responses = newmsg;
 918                                 chain_head = newmsg;
 919                         } else {
 920                                 tmp->lm_chain = newmsg;
 921                         }
 922                         chain_head->lm_chain_tail = newmsg;
 923                         tmp = newmsg;
 924                         /* "ok" means there's more to parse */
 925                         if (ok) {
 926                                 if (isv2) goto nextresp2;
 927                                 else goto nextresp3;
 928                         } else {
 929                                 /* got to end of datagram without a SearchResult. Free
 930                                  * our dup'd ber, but leave any buffer alone. For v2 case,
 931                                  * the previous response is still using this buffer. For v3,
 932                                  * the new ber has no buffer to free yet.
 933                                  */
 934                                 ber_free(ber, 0);
 935                                 return -1;
 936                         }
 937                 } else if ( moremsgs ) {
 938                 /* got search result, and we had multiple responses in 1 datagram.
 939                  * stick the result onto the end of the chain, and then pull the
 940                  * first response off the head of the chain.
 941                  */
 942                         tmp->lm_chain = newmsg;
 943                         chain_head->lm_chain_tail = newmsg;
 944                         *result = chkResponseList( ld, msgid, all );
 945                         ld->ld_errno = LDAP_SUCCESS;
 946                         return( (*result)->lm_msgtype );
 947                 }
 948         }
 949 #endif /* LDAP_CONNECTIONLESS */
 950
 951         /* is this the one we're looking for? */
 952         if ( msgid == LDAP_RES_ANY || id == msgid ) {
 953                 if ( all == LDAP_MSG_ONE
 954                     || (newmsg->lm_msgtype != LDAP_RES_SEARCH_RESULT
 955                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 956                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_REFERENCE) ) {
 957                         *result = newmsg;
 958                         ld->ld_errno = LDAP_SUCCESS;
 959                         return( tag );
 960                 } else if ( newmsg->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
 961                         foundit = 1;    /* return the chain later */
 962                 }
 963         }
 964
 965         /*
 966          * if not, we must add it to the list of responses.  if
 967          * the msgid is already there, it must be part of an existing
 968          * search response.
 969          */
 970
 971         prev = NULL;
 972         for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
 973                 if ( l->lm_msgid == newmsg->lm_msgid )
 974                         break;
 975                 prev = l;
 976         }
 977
 978         /* not part of an existing search response */
 979         if ( l == NULL ) {
 980                 if ( foundit ) {
 981                         *result = newmsg;
 982                         goto exit;
 983                 }
 984
 985                 newmsg->lm_next = ld->ld_responses;
 986                 ld->ld_responses = newmsg;
 987                 goto exit;
 988         }
 989
 990         Debug( LDAP_DEBUG_TRACE, "adding response ld %p msgid %ld type %ld:\n",
 991                 (void *)ld, (long) newmsg->lm_msgid, (long) newmsg->lm_msgtype );
 992
 993         /* part of a search response - add to end of list of entries */
 994         l->lm_chain_tail->lm_chain = newmsg;
 995         l->lm_chain_tail = newmsg;
 996
 997         /* return the whole chain if that's what we were looking for */
 998         if ( foundit ) {
 999                 if ( prev == NULL )
1000                         ld->ld_responses = l->lm_next;
1001                 else
1002                         prev->lm_next = l->lm_next;
1003                 *result = l;
1004         }
1005
1006 exit:
1007         if ( foundit ) {
1008                 ld->ld_errno = LDAP_SUCCESS;
1009                 return( tag );
1010         }
1011         if ( lc && ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
1012                 goto retry;
1013         }
1014         return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
1015 }
1016
1017
1018 static ber_tag_t
1019 build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
1020 {
1021         ber_len_t       len;
1022         ber_tag_t       tag;
1023         ber_int_t       along;
1024         BerElement *ber;
1025
1026         *bp = NULL;
1027         ber = ldap_alloc_ber_with_options( ld );
1028
1029         if( ber == NULL ) {
1030                 ld->ld_errno = LDAP_NO_MEMORY;
1031                 return LBER_ERROR;
1032         }
1033
1034         if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
1035                 lr->lr_res_msgtype, lr->lr_res_errno,
1036                 lr->lr_res_matched ? lr->lr_res_matched : "",
1037                 lr->lr_res_error ? lr->lr_res_error : "" ) == -1 )
1038         {
1039                 ld->ld_errno = LDAP_ENCODING_ERROR;
1040                 ber_free(ber, 1);
1041                 return( LBER_ERROR );
1042         }
1043
1044         ber_reset( ber, 1 );
1045
1046         if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
1047                 ld->ld_errno = LDAP_DECODING_ERROR;
1048                 ber_free(ber, 1);
1049                 return( LBER_ERROR );
1050         }
1051
1052         if ( ber_get_enum( ber, &along ) == LBER_ERROR ) {
1053                 ld->ld_errno = LDAP_DECODING_ERROR;
1054                 ber_free(ber, 1);
1055                 return( LBER_ERROR );
1056         }
1057
1058         tag = ber_peek_tag( ber, &len );
1059
1060         if ( tag == LBER_ERROR ) {
1061                 ld->ld_errno = LDAP_DECODING_ERROR;
1062                 ber_free(ber, 1);
1063                 return( LBER_ERROR );
1064         }
1065
1066         *bp = ber;
1067         return tag;
1068 }
1069
1070
1071 static void
1072 merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
1073 {
1074 /*
1075  * Merge error information in "lr" with "parentr" error code and string.
1076  */
1077         if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
1078                 parentr->lr_res_errno = lr->lr_res_errno;
1079                 if ( lr->lr_res_error != NULL ) {
1080                         (void)ldap_append_referral( ld, &parentr->lr_res_error,
1081                             lr->lr_res_error );
1082                 }
1083         } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
1084                 parentr->lr_res_errno == LDAP_SUCCESS )
1085         {
1086                 parentr->lr_res_errno = lr->lr_res_errno;
1087                 if ( parentr->lr_res_error != NULL ) {
1088                         LDAP_FREE( parentr->lr_res_error );
1089                 }
1090                 parentr->lr_res_error = lr->lr_res_error;
1091                 lr->lr_res_error = NULL;
1092                 if ( LDAP_NAME_ERROR( lr->lr_res_errno ) ) {
1093                         if ( parentr->lr_res_matched != NULL ) {
1094                                 LDAP_FREE( parentr->lr_res_matched );
1095                         }
1096                         parentr->lr_res_matched = lr->lr_res_matched;
1097                         lr->lr_res_matched = NULL;
1098                 }
1099         }
1100
1101         Debug( LDAP_DEBUG_TRACE, "merged parent (id %d) error info:  ",
1102             parentr->lr_msgid, 0, 0 );
1103         Debug( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
1104             parentr->lr_res_errno, parentr->lr_res_error ?
1105             parentr->lr_res_error : "", parentr->lr_res_matched ?
1106             parentr->lr_res_matched : "" );
1107 }
1108
1109
1110
1111 int
1112 ldap_msgtype( LDAPMessage *lm )
1113 {
1114         assert( lm != NULL );
1115         return ( lm != NULL ) ? (int)lm->lm_msgtype : -1;
1116 }
1117
1118
1119 int
1120 ldap_msgid( LDAPMessage *lm )
1121 {
1122         assert( lm != NULL );
1123
1124         return ( lm != NULL ) ? lm->lm_msgid : -1;
1125 }
1126
1127
1128 char * ldap_int_msgtype2str( ber_tag_t tag )
1129 {
1130         switch( tag ) {
1131         case LDAP_RES_ADD: return "add";
1132         case LDAP_RES_BIND: return "bind";
1133         case LDAP_RES_COMPARE: return "compare";
1134         case LDAP_RES_DELETE: return "delete";
1135         case LDAP_RES_EXTENDED: return "extended-result";
1136         case LDAP_RES_INTERMEDIATE: return "intermediate";
1137         case LDAP_RES_MODIFY: return "modify";
1138         case LDAP_RES_RENAME: return "rename";
1139         case LDAP_RES_SEARCH_ENTRY: return "search-entry";
1140         case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
1141         case LDAP_RES_SEARCH_RESULT: return "search-result";
1142         }
1143         return "unknown";
1144 }
1145
1146 int
1147 ldap_msgfree( LDAPMessage *lm )
1148 {
1149         LDAPMessage     *next;
1150         int             type = 0;
1151
1152         Debug( LDAP_DEBUG_TRACE, "ldap_msgfree\n", 0, 0, 0 );
1153
1154         for ( ; lm != NULL; lm = next ) {
1155                 next = lm->lm_chain;
1156                 type = lm->lm_msgtype;
1157                 ber_free( lm->lm_ber, 1 );
1158                 LDAP_FREE( (char *) lm );
1159         }
1160
1161         return( type );
1162 }
1163
1164 /*
1165  * ldap_msgdelete - delete a message.  It returns:
1166  *      0       if the entire message was deleted
1167  *      -1      if the message was not found, or only part of it was found
1168  */
1169 int
1170 ldap_msgdelete( LDAP *ld, int msgid )
1171 {
1172         LDAPMessage     *lm, *prev;
1173         int rc = 0;
1174
1175         assert( ld != NULL );
1176
1177         Debug( LDAP_DEBUG_TRACE, "ldap_msgdelete\n", 0, 0, 0 );
1178
1179         prev = NULL;
1180 #ifdef LDAP_R_COMPILE
1181         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
1182 #endif
1183         for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
1184                 if ( lm->lm_msgid == msgid )
1185                         break;
1186                 prev = lm;
1187         }
1188
1189         if ( lm == NULL ) {
1190                 rc = -1;
1191         } else {
1192                 if ( prev == NULL )
1193                         ld->ld_responses = lm->lm_next;
1194                 else
1195                         prev->lm_next = lm->lm_next;
1196         }
1197 #ifdef LDAP_R_COMPILE
1198         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
1199 #endif
1200         if ( lm && ldap_msgfree( lm ) == LDAP_RES_SEARCH_ENTRY )
1201                 rc = -1;
1202
1203         return( rc );
1204 }
1205
1206
1207 /*
1208  * ldap_abandoned
1209  *
1210  * return 1 if message msgid is waiting to be abandoned, 0 otherwise
1211  *
1212  * expects ld_res_mutex to be locked
1213  */
1214 static int
1215 ldap_abandoned( LDAP *ld, ber_int_t msgid )
1216 {
1217         int     i;
1218
1219 #ifdef LDAP_R_COMPILE
1220         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1221 #endif
1222
1223         if ( ld->ld_abandoned == NULL )
1224                 return( 0 );
1225
1226         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1227                 if ( ld->ld_abandoned[i] == msgid )
1228                         return( 1 );
1229
1230         return( 0 );
1231 }
1232
1233
1234 /*
1235  * ldap_mark_abandoned
1236  *
1237  * expects ld_res_mutex to be locked
1238  */
1239 static int
1240 ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
1241 {
1242         int     i;
1243
1244 #ifdef LDAP_R_COMPILE
1245         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1246 #endif
1247
1248         if ( ld->ld_abandoned == NULL )
1249                 return( -1 );
1250
1251         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1252                 if ( ld->ld_abandoned[i] == msgid )
1253                         break;
1254
1255         if ( ld->ld_abandoned[i] == -1 )
1256                 return( -1 );
1257
1258         for ( ; ld->ld_abandoned[i] != -1; i++ ) {
1259                 ld->ld_abandoned[i] = ld->ld_abandoned[i + 1];
1260         }
1261
1262         return( 0 );
1263 }