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