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

   1 /* result.c - wait for an ldap result */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2006 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1990 Regents of the University of Michigan.
  17  * All rights reserved.
  18  */
  19 /* This notice applies to changes, created by or for Novell, Inc.,
  20  * to preexisting works for which notices appear elsewhere in this file.
  21  *
  22  * Copyright (C) 1999, 2000 Novell, Inc. All Rights Reserved.
  23  *
  24  * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND TREATIES.
  25  * USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT TO VERSION
  26  * 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS AVAILABLE AT
  27  * HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE" IN THE
  28  * TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION OF THIS
  29  * WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP PUBLIC
  30  * LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT THE
  31  * PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
  32  *---
  33  * Modification to OpenLDAP source by Novell, Inc.
  34  * April 2000 sfs Add code to process V3 referrals and search results
  35  *---
  36  * Note: A verbatim copy of version 2.0.1 of the OpenLDAP Public License
  37  * can be found in the file "build/LICENSE-2.0.1" in this distribution
  38  * of OpenLDAP Software.
  39  */
  40 /* Portions Copyright (C) The Internet Society (1997)
  41  * ASN.1 fragments are from RFC 2251; see RFC for full legal notices.
  42  */
  43
  44 /*
  45  * LDAPv3 (RFC2251)
  46  *      LDAPResult ::= SEQUENCE {
  47  *              resultCode              ENUMERATED { ... },
  48  *              matchedDN               LDAPDN,
  49  *              errorMessage    LDAPString,
  50  *              referral                Referral OPTIONAL
  51  *      }
  52  *      Referral ::= SEQUENCE OF LDAPURL        (one or more)
  53  *      LDAPURL ::= LDAPString                          (limited to URL chars)
  54  */
  55
  56 #include "portable.h"
  57
  58 #include <stdio.h>
  59
  60 #include <ac/stdlib.h>
  61
  62 #include <ac/errno.h>
  63 #include <ac/socket.h>
  64 #include <ac/string.h>
  65 #include <ac/time.h>
  66 #include <ac/unistd.h>
  67
  68 #include "ldap-int.h"
  69 #include "ldap_log.h"
  70
  71 static int ldap_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
  72 static int ldap_mark_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
  73 static int wait4msg LDAP_P(( LDAP *ld, ber_int_t msgid, int all, struct timeval *timeout,
  74         LDAPMessage **result ));
  75 static ber_tag_t try_read1msg LDAP_P(( LDAP *ld, ber_int_t msgid,
  76         int all, LDAPConn **lc, LDAPMessage **result ));
  77 static ber_tag_t build_result_ber LDAP_P(( LDAP *ld, BerElement **bp, LDAPRequest *lr ));
  78 static void merge_error_info LDAP_P(( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr ));
  79 static LDAPMessage * chkResponseList LDAP_P(( LDAP *ld, int msgid, int all));
  80
  81 #define LDAP_MSG_X_KEEP_LOOKING         (-2)
  82
  83
  84 /*
  85  * ldap_result - wait for an ldap result response to a message from the
  86  * ldap server.  If msgid is LDAP_RES_ANY (-1), any message will be
  87  * accepted.  If msgid is LDAP_RES_UNSOLICITED (0), any unsolicited
  88  * message is accepted.  Otherwise ldap_result will wait for a response
  89  * with msgid.  If all is LDAP_MSG_ONE (0) the first message with id
  90  * msgid will be accepted, otherwise, ldap_result will wait for all
  91  * responses with id msgid and then return a pointer to the entire list
  92  * of messages.  In general, this is only useful for search responses,
  93  * which can be of three message types (zero or more entries, zero or
  94  * search references, followed by an ldap result).  An extension to
  95  * LDAPv3 allows partial extended responses to be returned in response
  96  * to any request.  The type of the first message received is returned.
  97  * When waiting, any messages that have been abandoned are discarded.
  98  *
  99  * Example:
 100  *      ldap_result( s, msgid, all, timeout, result )
 101  */
 102 int
 103 ldap_result(
 104         LDAP *ld,
 105         int msgid,
 106         int all,
 107         struct timeval *timeout,
 108         LDAPMessage **result )
 109 {
 110         LDAPMessage     *lm;
 111         int     rc;
 112
 113         assert( ld != NULL );
 114         assert( result != NULL );
 115
 116         Debug( LDAP_DEBUG_TRACE, "ldap_result ld %p msgid %d\n", (void *)ld, msgid, 0 );
 117
 118 #ifdef LDAP_R_COMPILE
 119         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
 120 #endif
 121         lm = chkResponseList(ld, msgid, all);
 122
 123         if ( lm == NULL ) {
 124                 rc = wait4msg( ld, msgid, all, timeout, result );
 125         } else {
 126                 *result = lm;
 127                 ld->ld_errno = LDAP_SUCCESS;
 128                 rc = lm->lm_msgtype;
 129         }
 130 #ifdef LDAP_R_COMPILE
 131         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
 132 #endif
 133         return( rc );
 134 }
 135
 136 static LDAPMessage *
 137 chkResponseList(
 138         LDAP *ld,
 139         int msgid,
 140         int all)
 141 {
 142         LDAPMessage     *lm, **lastlm, *nextlm;
 143
 144         /*
 145          * Look through the list of responses we have received on
 146          * this association and see if the response we're interested in
 147          * is there.  If it is, return it.  If not, call wait4msg() to
 148          * wait until it arrives or timeout occurs.
 149          */
 150
 151 #ifdef LDAP_R_COMPILE
 152         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 153 #endif
 154
 155         Debug( LDAP_DEBUG_TRACE,
 156                 "ldap_chkResponseList ld %p msgid %d all %d\n",
 157                 (void *)ld, msgid, all );
 158
 159         lastlm = &ld->ld_responses;
 160         for ( lm = ld->ld_responses; lm != NULL; lm = nextlm ) {
 161                 nextlm = lm->lm_next;
 162
 163                 if ( ldap_abandoned( ld, lm->lm_msgid ) ) {
 164                         Debug( LDAP_DEBUG_TRACE,
 165                                 "ldap_chkResponseList msg abandoned, msgid %d\n",
 166                             msgid, 0, 0 );
 167                         ldap_mark_abandoned( ld, lm->lm_msgid );
 168
 169                         /* Remove this entry from list */
 170                         *lastlm = nextlm;
 171
 172                         ldap_msgfree( lm );
 173
 174                         continue;
 175                 }
 176
 177                 if ( msgid == LDAP_RES_ANY || lm->lm_msgid == msgid ) {
 178                         LDAPMessage     *tmp;
 179
 180                         if ( all == LDAP_MSG_ONE || all == LDAP_MSG_RECEIVED ||
 181                                 msgid == LDAP_RES_UNSOLICITED ) {
 182                                 break;
 183                         }
 184
 185                         tmp = lm->lm_chain_tail;
 186                         if ((tmp->lm_msgtype == LDAP_RES_SEARCH_ENTRY) ||
 187                                 (tmp->lm_msgtype == LDAP_RES_SEARCH_REFERENCE) ||
 188                                 (tmp->lm_msgtype == LDAP_RES_INTERMEDIATE)) {
 189                                 tmp = NULL;
 190                         }
 191
 192                         if ( tmp == NULL ) {
 193                                 lm = NULL;
 194                         }
 195
 196                         break;
 197                 }
 198                 lastlm = &lm->lm_next;
 199         }
 200
 201     if ( lm != NULL ) {
 202                 /* Found an entry, remove it from the list */
 203             if ( all == LDAP_MSG_ONE && lm->lm_chain != NULL ) {
 204                         *lastlm = lm->lm_chain;
 205                         lm->lm_chain->lm_next = lm->lm_next;
 206                         lm->lm_chain->lm_chain_tail = ( lm->lm_chain_tail != lm ) ? lm->lm_chain_tail : lm->lm_chain;
 207                         lm->lm_chain = NULL;
 208                         lm->lm_chain_tail = NULL;
 209             } else {
 210                         *lastlm = lm->lm_next;
 211                 }
 212             lm->lm_next = NULL;
 213     }
 214
 215 #ifdef LDAP_DEBUG
 216         if( lm == NULL) {
 217                 Debug( LDAP_DEBUG_TRACE,
 218                         "ldap_chkResponseList returns ld %p NULL\n", (void *)ld, 0, 0);
 219         } else {
 220                 Debug( LDAP_DEBUG_TRACE,
 221                         "ldap_chkResponseList returns ld %p msgid %d, type 0x%02lu\n",
 222                         (void *)ld, lm->lm_msgid, (unsigned long) lm->lm_msgtype);
 223         }
 224 #endif
 225     return lm;
 226 }
 227
 228 static int
 229 wait4msg(
 230         LDAP *ld,
 231         ber_int_t msgid,
 232         int all,
 233         struct timeval *timeout,
 234         LDAPMessage **result )
 235 {
 236         int             rc;
 237         struct timeval  tv = { 0 },
 238                         tv0 = { 0 },
 239                         *tvp;
 240         time_t          start_time = 0;
 241         time_t          tmp_time;
 242         LDAPConn        *lc, *nextlc;
 243
 244         assert( ld != NULL );
 245         assert( result != NULL );
 246
 247 #ifdef LDAP_R_COMPILE
 248         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 249 #endif
 250
 251 #ifdef LDAP_DEBUG
 252         if ( timeout == NULL ) {
 253                 Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (infinite timeout)\n",
 254                         (void *)ld, msgid, 0 );
 255         } else {
 256                 Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (timeout %ld usec)\n",
 257                         (void *)ld, msgid, (long)timeout->tv_sec * 1000000 + timeout->tv_usec );
 258         }
 259 #endif /* LDAP_DEBUG */
 260
 261         if ( timeout == NULL ) {
 262                 tvp = NULL;
 263         } else {
 264                 tv0 = *timeout;
 265                 tv = *timeout;
 266                 tvp = &tv;
 267                 start_time = time( NULL );
 268         }
 269
 270         rc = LDAP_MSG_X_KEEP_LOOKING;
 271         while ( rc == LDAP_MSG_X_KEEP_LOOKING ) {
 272 #ifdef LDAP_DEBUG
 273                 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
 274                         Debug( LDAP_DEBUG_TRACE, "wait4msg continue ld %p msgid %d all %d\n",
 275                                 (void *)ld, msgid, all );
 276                         ldap_dump_connection( ld, ld->ld_conns, 1 );
 277                         ldap_dump_requests_and_responses( ld );
 278                 }
 279 #endif /* LDAP_DEBUG */
 280
 281                 if ( (*result = chkResponseList(ld, msgid, all)) != NULL ) {
 282                         rc = (*result)->lm_msgtype;
 283
 284                 } else {
 285                         int lc_ready = 0;
 286
 287 #ifdef LDAP_R_COMPILE
 288                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 289 #endif
 290                         for ( lc = ld->ld_conns; lc != NULL; lc = nextlc ) {
 291                                 nextlc = lc->lconn_next;
 292                                 if ( ber_sockbuf_ctrl( lc->lconn_sb,
 293                                                 LBER_SB_OPT_DATA_READY, NULL ) ) {
 294 #ifdef LDAP_R_COMPILE
 295                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 296 #endif
 297                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 298 #ifdef LDAP_R_COMPILE
 299                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 300 #endif
 301                                         lc_ready = 1;
 302                                         break;
 303                                 }
 304                         }
 305 #ifdef LDAP_R_COMPILE
 306                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 307 #endif
 308
 309                         if ( !lc_ready ) {
 310                                 rc = ldap_int_select( ld, tvp );
 311 #ifdef LDAP_DEBUG
 312                                 if ( rc == -1 ) {
 313                                         Debug( LDAP_DEBUG_TRACE,
 314                                                 "ldap_int_select returned -1: errno %d\n",
 315                                                 errno, 0, 0 );
 316                                 }
 317 #endif
 318
 319                                 if ( rc == 0 || ( rc == -1 && (
 320                                         !LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART)
 321                                                 || errno != EINTR )))
 322                                 {
 323                                         ld->ld_errno = (rc == -1 ? LDAP_SERVER_DOWN :
 324                                                 LDAP_TIMEOUT);
 325                                         return( rc );
 326                                 }
 327
 328                                 if ( rc == -1 ) {
 329                                         rc = LDAP_MSG_X_KEEP_LOOKING;   /* select interrupted: loop */
 330                                 } else {
 331                                         rc = LDAP_MSG_X_KEEP_LOOKING;
 332 #ifdef LDAP_R_COMPILE
 333                                         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 334 #endif
 335                                         if ( ld->ld_requests &&
 336                                                 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
 337                                                 ldap_is_write_ready( ld,
 338                                                         ld->ld_requests->lr_conn->lconn_sb ) )
 339                                         {
 340                                                 ldap_int_flush_request( ld, ld->ld_requests );
 341                                         }
 342 #ifdef LDAP_R_COMPILE
 343                                         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 344                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 345 #endif
 346                                         for ( lc = ld->ld_conns; rc == LDAP_MSG_X_KEEP_LOOKING && lc != NULL;
 347                                                 lc = nextlc )
 348                                         {
 349                                                 nextlc = lc->lconn_next;
 350                                                 if ( lc->lconn_status == LDAP_CONNST_CONNECTED &&
 351                                                         ldap_is_read_ready( ld, lc->lconn_sb ))
 352                                                 {
 353 #ifdef LDAP_R_COMPILE
 354                                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 355 #endif
 356                                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 357                                                                 if ( lc == NULL ) lc = nextlc;
 358 #ifdef LDAP_R_COMPILE
 359                                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 360 #endif
 361                                                 }
 362                                         }
 363 #ifdef LDAP_R_COMPILE
 364                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 365 #endif
 366                                 }
 367                         }
 368                 }
 369
 370                 if ( rc == LDAP_MSG_X_KEEP_LOOKING && tvp != NULL ) {
 371                         tmp_time = time( NULL );
 372                         tv0.tv_sec -= ( tmp_time - start_time );
 373                         if ( tv0.tv_sec <= 0 ) {
 374                                 rc = 0; /* timed out */
 375                                 ld->ld_errno = LDAP_TIMEOUT;
 376                                 break;
 377                         }
 378                         tv.tv_sec = tv0.tv_sec;
 379
 380                         Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p %ld secs to go\n",
 381                                 (void *)ld, (long) tv.tv_sec, 0 );
 382                         start_time = tmp_time;
 383                 }
 384         }
 385
 386         return( rc );
 387 }
 388
 389
 390 static ber_tag_t
 391 try_read1msg(
 392         LDAP *ld,
 393         ber_int_t msgid,
 394         int all,
 395         LDAPConn **lcp,
 396         LDAPMessage **result )
 397 {
 398         BerElement      *ber;
 399         LDAPMessage     *newmsg, *l, *prev;
 400         ber_int_t       id;
 401         ber_tag_t       tag;
 402         ber_len_t       len;
 403         int             foundit = 0;
 404         LDAPRequest     *lr, *tmplr;
 405         LDAPConn        *lc;
 406         BerElement      tmpber;
 407         int             rc, refer_cnt, hadref, simple_request;
 408         ber_int_t       lderr;
 409
 410 #ifdef LDAP_CONNECTIONLESS
 411         LDAPMessage     *tmp = NULL, *chain_head = NULL;
 412         int             moremsgs = 0, isv2 = 0;
 413 #endif
 414
 415         /*
 416          * v3ref = flag for V3 referral / search reference
 417          * 0 = not a ref, 1 = sucessfully chased ref, -1 = pass ref to application
 418          */
 419         enum {
 420                 V3REF_NOREF     = 0,
 421                 V3REF_SUCCESS   = 1,
 422                 V3REF_TOAPP     = -1
 423         }       v3ref;
 424
 425         assert( ld != NULL );
 426         assert( lcp != NULL );
 427         assert( *lcp != NULL );
 428
 429 #ifdef LDAP_R_COMPILE
 430         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
 431 #endif
 432
 433         Debug( LDAP_DEBUG_TRACE, "read1msg: ld %p msgid %d all %d\n",
 434                 (void *)ld, msgid, all );
 435
 436         lc = *lcp;
 437
 438 retry:
 439         if ( lc->lconn_ber == NULL ) {
 440                 lc->lconn_ber = ldap_alloc_ber_with_options(ld);
 441
 442                 if( lc->lconn_ber == NULL ) {
 443                         return -1;
 444                 }
 445         }
 446
 447         ber = lc->lconn_ber;
 448         assert( LBER_VALID (ber) );
 449
 450         /* get the next message */
 451         errno = 0;
 452 #ifdef LDAP_CONNECTIONLESS
 453         if ( LDAP_IS_UDP(ld) ) {
 454                 struct sockaddr from;
 455                 ber_int_sb_read( lc->lconn_sb, &from, sizeof(struct sockaddr) );
 456                 if (ld->ld_options.ldo_version == LDAP_VERSION2) isv2=1;
 457         }
 458 nextresp3:
 459 #endif
 460         tag = ber_get_next( lc->lconn_sb, &len, ber );
 461         if ( tag == LDAP_TAG_MESSAGE ) {
 462                 /*
 463                  * We read a complete message.
 464                  * The connection should no longer need this ber.
 465                  */
 466                 lc->lconn_ber = NULL;
 467         }
 468         if ( tag != LDAP_TAG_MESSAGE ) {
 469                 if ( tag == LBER_DEFAULT) {
 470 #ifdef LDAP_DEBUG
 471                         Debug( LDAP_DEBUG_CONNS,
 472                                 "ber_get_next failed.\n", 0, 0, 0 );
 473 #endif
 474 #ifdef EWOULDBLOCK
 475                         if (errno==EWOULDBLOCK) return LDAP_MSG_X_KEEP_LOOKING;
 476 #endif
 477 #ifdef EAGAIN
 478                         if (errno == EAGAIN) return LDAP_MSG_X_KEEP_LOOKING;
 479 #endif
 480                         ld->ld_errno = LDAP_SERVER_DOWN;
 481                         return -1;
 482                 }
 483                 ld->ld_errno = LDAP_LOCAL_ERROR;
 484                 return -1;
 485         }
 486
 487         /* message id */
 488         if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
 489                 ber_free( ber, 1 );
 490                 ld->ld_errno = LDAP_DECODING_ERROR;
 491                 return( -1 );
 492         }
 493
 494         /* if it's been abandoned, toss it */
 495         if ( ldap_abandoned( ld, id ) ) {
 496                 Debug( LDAP_DEBUG_ANY, "abandoned ld %p msgid %ld\n",
 497                         (void *)ld, (long) id, 0);
 498 retry_ber:
 499                 ber_free( ber, 1 );
 500                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 501                         goto retry;
 502                 }
 503                 return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
 504         }
 505
 506         lr = ldap_find_request_by_msgid( ld, id );
 507         if ( lr == NULL ) {
 508                 Debug( LDAP_DEBUG_ANY,
 509                         "no request for response on ld %p msgid %ld (tossing)\n",
 510                         (void *)ld, (long) id, 0 );
 511                 goto retry_ber;
 512         }
 513 #ifdef LDAP_CONNECTIONLESS
 514         if (LDAP_IS_UDP(ld) && isv2) {
 515                 ber_scanf(ber, "x{");
 516         }
 517 nextresp2:
 518 #endif
 519         /* the message type */
 520         if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
 521                 ld->ld_errno = LDAP_DECODING_ERROR;
 522                 ber_free( ber, 1 );
 523                 return( -1 );
 524         }
 525
 526         Debug( LDAP_DEBUG_TRACE,
 527                 "read1msg: ld %p msgid %ld message type %s\n",
 528                 (void *)ld, (long) lr->lr_msgid, ldap_int_msgtype2str( tag ));
 529
 530         id = lr->lr_origid;
 531         refer_cnt = 0;
 532         hadref = simple_request = 0;
 533         rc = LDAP_MSG_X_KEEP_LOOKING;   /* default is to keep looking (no response found) */
 534         lr->lr_res_msgtype = tag;
 535
 536         /*
 537          * This code figures out if we are going to chase a
 538          * referral / search reference, or pass it back to the application
 539          */
 540         v3ref = V3REF_NOREF;    /* Assume not a V3 search reference/referral */
 541         if( (tag != LDAP_RES_SEARCH_ENTRY) && (ld->ld_version > LDAP_VERSION2) ) {
 542                 BerElement      tmpber = *ber;  /* struct copy */
 543                 char **refs = NULL;
 544
 545                 if( tag == LDAP_RES_SEARCH_REFERENCE ) {
 546                         /* This is a V3 search reference */
 547                         /* Assume we do not chase the reference,
 548                          * but pass it to application */
 549                         v3ref = V3REF_TOAPP;
 550                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
 551                                         (lr->lr_parent != NULL) )
 552                         {
 553                                 /* Get the referral list */
 554                                 if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
 555                                         rc = LDAP_DECODING_ERROR;
 556                                 } else {
 557                                         /* Note: refs array is freed by ldap_chase_v3referrals */
 558                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 559                                             1, &lr->lr_res_error, &hadref );
 560                                         if ( refer_cnt > 0 ) {
 561                                                 /* sucessfully chased reference */
 562                                                 /* If haven't got end search, set chasing referrals */
 563                                                 if( lr->lr_status != LDAP_REQST_COMPLETED) {
 564                                                         lr->lr_status = LDAP_REQST_CHASINGREFS;
 565                                                         Debug( LDAP_DEBUG_TRACE,
 566                                                                 "read1msg:  search ref chased, "
 567                                                                 "mark request chasing refs, "
 568                                                                 "id = %d\n",
 569                                                                 lr->lr_msgid, 0, 0);
 570                                                 }
 571
 572                                                 /* We sucessfully chased the reference */
 573                                                 v3ref = V3REF_SUCCESS;
 574                                         }
 575                                 }
 576                         }
 577                 } else {
 578                         /* Check for V3 referral */
 579                         ber_len_t       len;
 580                         char            *lr_res_error = NULL;
 581
 582                         if ( ber_scanf( &tmpber, "{eAA",/*}*/ &lderr,
 583                                     &lr->lr_res_matched, &lr_res_error )
 584                                     != LBER_ERROR )
 585                         {
 586                                 if ( lr_res_error != NULL ) {
 587                                         {
 588                                                 if ( lr->lr_res_error != NULL ) {
 589                                                         (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 590                                                         LDAP_FREE( (char *)lr_res_error );
 591
 592                                                 } else {
 593                                                         lr->lr_res_error = lr_res_error;
 594                                                 }
 595                                         }
 596                                         lr_res_error = NULL;
 597                                 }
 598
 599                                 /* Check if V3 referral */
 600                                 if ( ber_peek_tag( &tmpber, &len ) == LDAP_TAG_REFERRAL ) {
 601                                         /* We have a V3 referral, assume we cannot chase it */
 602                                         v3ref = V3REF_TOAPP;
 603                                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS)
 604                                                          || (lr->lr_parent != NULL) )
 605                                         {
 606                                                 /* Assume referral not chased and return it to app */
 607                                                 v3ref = V3REF_TOAPP;
 608
 609                                                 /* Get the referral list */
 610                                                 if( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
 611                                                         rc = LDAP_DECODING_ERROR;
 612                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 613                                                         Debug( LDAP_DEBUG_TRACE,
 614                                                                 "read1msg: referral decode error, mark request completed, ld %p msgid %d\n",
 615                                                                 (void *)ld, lr->lr_msgid, 0);
 616                                                 } else {
 617                                                         /* Chase the referral
 618                                                          * Note: refs arrary is freed by ldap_chase_v3referrals
 619                                                          */
 620                                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 621                                                             0, &lr->lr_res_error, &hadref );
 622                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 623                                                         Debug( LDAP_DEBUG_TRACE,
 624                                                                 "read1msg: referral chased, mark request completed, ld %p msgid %d\n",
 625                                                                 (void *)ld, lr->lr_msgid, 0);
 626                                                         if( refer_cnt > 0) {
 627                                                                 /* Referral successfully chased */
 628                                                                 v3ref = V3REF_SUCCESS;
 629                                                         }
 630                                                 }
 631                                         }
 632                                 }
 633
 634                                 if( lr->lr_res_matched != NULL ) {
 635                                         LDAP_FREE( lr->lr_res_matched );
 636                                         lr->lr_res_matched = NULL;
 637                                 }
 638                                 if( lr->lr_res_error != NULL ) {
 639                                         LDAP_FREE( lr->lr_res_error );
 640                                         lr->lr_res_error = NULL;
 641                                 }
 642                         }
 643                 }
 644         }
 645
 646         /* All results that just return a status, i.e. don't return data
 647          * go through the following code.  This code also chases V2 referrals
 648          * and checks if all referrals have been chased.
 649          */
 650         if ( (tag != LDAP_RES_SEARCH_ENTRY) && (v3ref != V3REF_TOAPP) &&
 651                 (tag != LDAP_RES_INTERMEDIATE ))
 652         {
 653                 /* For a v3 search referral/reference, only come here if already chased it */
 654                 if ( ld->ld_version >= LDAP_VERSION2 &&
 655                         ( lr->lr_parent != NULL ||
 656                         LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ) )
 657                 {
 658                         char            *lr_res_error = NULL;
 659
 660                         tmpber = *ber;  /* struct copy */
 661                         if ( v3ref == V3REF_SUCCESS ) {
 662                                 /* V3 search reference or V3 referral
 663                                  * sucessfully chased. If this message
 664                                  * is a search result, then it has no more
 665                                  * outstanding referrals.
 666                                  */
 667                                 if ( tag == LDAP_RES_SEARCH_RESULT )
 668                                         refer_cnt = 0;
 669                         } else if ( ber_scanf( &tmpber, "{eAA}", &lderr,
 670                                 &lr->lr_res_matched, &lr_res_error )
 671                                 != LBER_ERROR )
 672                         {
 673                                 if ( lr_res_error != NULL ) {
 674                                         {
 675                                                 if ( lr->lr_res_error != NULL ) {
 676                                                         (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 677                                                         LDAP_FREE( (char *)lr_res_error );
 678                                                 } else {
 679                                                         lr->lr_res_error = lr_res_error;
 680                                                 }
 681                                         }
 682                                         lr_res_error = NULL;
 683                                 }
 684
 685                                 switch ( lderr ) {
 686                                 case LDAP_SUCCESS:
 687                                 case LDAP_COMPARE_TRUE:
 688                                 case LDAP_COMPARE_FALSE:
 689                                         break;
 690
 691                                 default:
 692                                         if ( lr->lr_res_error == NULL
 693                                                 || lr->lr_res_error[ 0 ] == '\0' )
 694                                         {
 695                                                 break;
 696                                         }
 697
 698                                         /* referrals are in error string */
 699                                         refer_cnt = ldap_chase_referrals( ld, lr,
 700                                                 &lr->lr_res_error, -1, &hadref );
 701                                         lr->lr_status = LDAP_REQST_COMPLETED;
 702                                         Debug( LDAP_DEBUG_TRACE,
 703                                                 "read1msg:  V2 referral chased, "
 704                                                 "mark request completed, id = %d\n",
 705                                                 lr->lr_msgid, 0, 0 );
 706                                         break;
 707                                 }
 708
 709                                 /* save errno, message, and matched string */
 710                                 if ( !hadref || lr->lr_res_error == NULL ) {
 711                                         lr->lr_res_errno = ( lderr ==
 712                                         LDAP_PARTIAL_RESULTS ) ? LDAP_SUCCESS
 713                                         : lderr;
 714                                 } else if ( ld->ld_errno != LDAP_SUCCESS ) {
 715                                         lr->lr_res_errno = ld->ld_errno;
 716                                 } else {
 717                                         lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
 718                                 }
 719
 720                                 Debug( LDAP_DEBUG_TRACE, "new result:  "
 721                                         "res_errno: %d, "
 722                                         "res_error: <%s>, "
 723                                         "res_matched: <%s>\n",
 724                                         lr->lr_res_errno,
 725                                         lr->lr_res_error ? lr->lr_res_error : "",
 726                                         lr->lr_res_matched ? lr->lr_res_matched : "" );
 727                         }
 728
 729                         /* in any case, don't leave any lr_res_error 'round */
 730                         if ( lr_res_error ) {
 731                                 LDAP_FREE( lr_res_error );
 732                         }
 733                 }
 734
 735                 Debug( LDAP_DEBUG_TRACE,
 736                         "read1msg: ld %p %d new referrals\n",
 737                         (void *)ld, refer_cnt, 0 );
 738
 739                 if ( refer_cnt != 0 ) { /* chasing referrals */
 740                         ber_free( ber, 1 );
 741                         ber = NULL;
 742                         if ( refer_cnt < 0 ) {
 743                                 return( -1 );   /* fatal error */
 744                         }
 745                         lr->lr_res_errno = LDAP_SUCCESS; /* sucessfully chased referral */
 746                 } else {
 747                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
 748                                 /* request without any referrals */
 749                                 simple_request = ( hadref ? 0 : 1 );
 750                         } else {
 751                                 /* request with referrals or child request */
 752                                 ber_free( ber, 1 );
 753                                 ber = NULL;
 754                         }
 755
 756                         lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
 757                         Debug( LDAP_DEBUG_TRACE,
 758                                 "read1msg:  mark request completed, ld %p msgid %d\n",
 759                                 (void *)ld, lr->lr_msgid, 0);
 760                         while ( lr->lr_parent != NULL ) {
 761                                 merge_error_info( ld, lr->lr_parent, lr );
 762
 763                                 lr = lr->lr_parent;
 764                                 if ( --lr->lr_outrefcnt > 0 ) {
 765                                         break;  /* not completely done yet */
 766                                 }
 767                         }
 768
 769                         /* Check if all requests are finished, lr is now parent */
 770                         tmplr = lr;
 771                         if (tmplr->lr_status == LDAP_REQST_COMPLETED) {
 772                                 for ( tmplr=lr->lr_child;
 773                                         tmplr != NULL;
 774                                         tmplr=tmplr->lr_refnext)
 775                                 {
 776                                         if( tmplr->lr_status != LDAP_REQST_COMPLETED) break;
 777                                 }
 778                         }
 779
 780                         /* This is the parent request if the request has referrals */
 781                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL &&
 782                                 tmplr == NULL )
 783                         {
 784                                 id = lr->lr_msgid;
 785                                 tag = lr->lr_res_msgtype;
 786                                 Debug( LDAP_DEBUG_ANY, "request done: ld %p msgid %ld\n",
 787                                         (void *)ld, (long) id, 0 );
 788 Debug( LDAP_DEBUG_TRACE,
 789 "res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 790 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 791 lr->lr_res_matched ? lr->lr_res_matched : "" );
 792                                 if ( !simple_request ) {
 793                                         ber_free( ber, 1 );
 794                                         ber = NULL;
 795                                         if ( build_result_ber( ld, &ber, lr )
 796                                             == LBER_ERROR ) {
 797                                                 rc = -1; /* fatal error */
 798                                         }
 799                                 }
 800
 801 #ifdef LDAP_R_COMPILE
 802                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 803 #endif
 804                                 ldap_free_request( ld, lr );
 805 #ifdef LDAP_R_COMPILE
 806                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 807 #endif
 808                         }
 809
 810                         if ( lc != NULL ) {
 811 #ifdef LDAP_R_COMPILE
 812                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 813 #endif
 814                                 ldap_free_connection( ld, lc, 0, 1 );
 815 #ifdef LDAP_R_COMPILE
 816                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 817 #endif
 818                                 lc = *lcp = NULL;
 819                         }
 820                 }
 821         }
 822
 823         if ( ber == NULL ) {
 824                 return( rc );
 825         }
 826
 827         /* make a new ldap message */
 828         newmsg = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) );
 829         if ( newmsg == NULL ) {
 830                 ld->ld_errno = LDAP_NO_MEMORY;
 831                 return( -1 );
 832         }
 833         newmsg->lm_msgid = (int)id;
 834         newmsg->lm_msgtype = tag;
 835         newmsg->lm_ber = ber;
 836         newmsg->lm_chain_tail = newmsg;
 837
 838 #ifdef LDAP_CONNECTIONLESS
 839         /* CLDAP replies all fit in a single datagram. In LDAPv2 RFC1798
 840          * the responses are all a sequence wrapped in one message. In
 841          * LDAPv3 each response is in its own message. The datagram must
 842          * end with a SearchResult. We can't just parse each response in
 843          * separate calls to try_read1msg because the header info is only
 844          * present at the beginning of the datagram, not at the beginning
 845          * of each response. So parse all the responses at once and queue
 846          * them up, then pull off the first response to return to the
 847          * caller when all parsing is complete.
 848          */
 849         if ( LDAP_IS_UDP(ld) ) {
 850                 /* If not a result, look for more */
 851                 if ( tag != LDAP_RES_SEARCH_RESULT ) {
 852                         int ok = 0;
 853                         moremsgs = 1;
 854                         if (isv2) {
 855                                 /* LDAPv2: dup the current ber, skip past the current
 856                                  * response, and see if there are any more after it.
 857                                  */
 858                                 ber = ber_dup( ber );
 859                                 ber_scanf( ber, "x" );
 860                                 if (ber_peek_tag(ber, &len) != LBER_DEFAULT) {
 861                                         /* There's more - dup the ber buffer so they can all be
 862                                          * individually freed by ldap_msgfree.
 863                                          */
 864                                         struct berval bv;
 865                                         ber_get_option(ber, LBER_OPT_BER_REMAINING_BYTES, &len);
 866                                         bv.bv_val = LDAP_MALLOC(len);
 867                                         if (bv.bv_val) {
 868                                                 ok=1;
 869                                                 ber_read(ber, bv.bv_val, len);
 870                                                 bv.bv_len = len;
 871                                                 ber_init2(ber, &bv, ld->ld_lberoptions );
 872                                         }
 873                                 }
 874                         } else {
 875                                 /* LDAPv3: Just allocate a new ber. Since this is a buffered
 876                                  * datagram, if the sockbuf is readable we still have data
 877                                  * to parse.
 878                                  */
 879                                 ber = ldap_alloc_ber_with_options( ld );
 880                                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) ok = 1;
 881                         }
 882                         /* set up response chain */
 883                         if ( tmp == NULL ) {
 884                                 newmsg->lm_next = ld->ld_responses;
 885                                 ld->ld_responses = newmsg;
 886                                 chain_head = newmsg;
 887                         } else {
 888                                 tmp->lm_chain = newmsg;
 889                         }
 890                         chain_head->lm_chain_tail = newmsg;
 891                         tmp = newmsg;
 892                         /* "ok" means there's more to parse */
 893                         if (ok) {
 894                                 if (isv2) goto nextresp2;
 895                                 else goto nextresp3;
 896                         } else {
 897                                 /* got to end of datagram without a SearchResult. Free
 898                                  * our dup'd ber, but leave any buffer alone. For v2 case,
 899                                  * the previous response is still using this buffer. For v3,
 900                                  * the new ber has no buffer to free yet.
 901                                  */
 902                                 ber_free(ber, 0);
 903                                 return -1;
 904                         }
 905                 } else if ( moremsgs ) {
 906                 /* got search result, and we had multiple responses in 1 datagram.
 907                  * stick the result onto the end of the chain, and then pull the
 908                  * first response off the head of the chain.
 909                  */
 910                         tmp->lm_chain = newmsg;
 911                         chain_head->lm_chain_tail = newmsg;
 912                         *result = chkResponseList( ld, msgid, all );
 913                         ld->ld_errno = LDAP_SUCCESS;
 914                         return( (*result)->lm_msgtype );
 915                 }
 916         }
 917 #endif /* LDAP_CONNECTIONLESS */
 918
 919         /* is this the one we're looking for? */
 920         if ( msgid == LDAP_RES_ANY || id == msgid ) {
 921                 if ( all == LDAP_MSG_ONE
 922                     || (newmsg->lm_msgtype != LDAP_RES_SEARCH_RESULT
 923                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 924                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_REFERENCE) ) {
 925                         *result = newmsg;
 926                         ld->ld_errno = LDAP_SUCCESS;
 927                         return( tag );
 928                 } else if ( newmsg->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
 929                         foundit = 1;    /* return the chain later */
 930                 }
 931         }
 932
 933         /*
 934          * if not, we must add it to the list of responses.  if
 935          * the msgid is already there, it must be part of an existing
 936          * search response.
 937          */
 938
 939         prev = NULL;
 940         for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
 941                 if ( l->lm_msgid == newmsg->lm_msgid )
 942                         break;
 943                 prev = l;
 944         }
 945
 946         /* not part of an existing search response */
 947         if ( l == NULL ) {
 948                 if ( foundit ) {
 949                         *result = newmsg;
 950                         goto exit;
 951                 }
 952
 953                 newmsg->lm_next = ld->ld_responses;
 954                 ld->ld_responses = newmsg;
 955                 goto exit;
 956         }
 957
 958         Debug( LDAP_DEBUG_TRACE, "adding response ld %p msgid %ld type %ld:\n",
 959                 (void *)ld, (long) newmsg->lm_msgid, (long) newmsg->lm_msgtype );
 960
 961         /* part of a search response - add to end of list of entries */
 962         l->lm_chain_tail->lm_chain = newmsg;
 963         l->lm_chain_tail = newmsg;
 964
 965         /* return the whole chain if that's what we were looking for */
 966         if ( foundit ) {
 967                 if ( prev == NULL )
 968                         ld->ld_responses = l->lm_next;
 969                 else
 970                         prev->lm_next = l->lm_next;
 971                 *result = l;
 972         }
 973
 974 exit:
 975         if ( foundit ) {
 976                 ld->ld_errno = LDAP_SUCCESS;
 977                 return( tag );
 978         }
 979         if ( lc && ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 980                 goto retry;
 981         }
 982         return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
 983 }
 984
 985
 986 static ber_tag_t
 987 build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
 988 {
 989         ber_len_t       len;
 990         ber_tag_t       tag;
 991         ber_int_t       along;
 992         BerElement *ber;
 993
 994         *bp = NULL;
 995         ber = ldap_alloc_ber_with_options( ld );
 996
 997         if( ber == NULL ) {
 998                 ld->ld_errno = LDAP_NO_MEMORY;
 999                 return LBER_ERROR;
1000         }
1001
1002         if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
1003                 lr->lr_res_msgtype, lr->lr_res_errno,
1004                 lr->lr_res_matched ? lr->lr_res_matched : "",
1005                 lr->lr_res_error ? lr->lr_res_error : "" ) == -1 )
1006         {
1007                 ld->ld_errno = LDAP_ENCODING_ERROR;
1008                 ber_free(ber, 1);
1009                 return( LBER_ERROR );
1010         }
1011
1012         ber_reset( ber, 1 );
1013
1014         if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
1015                 ld->ld_errno = LDAP_DECODING_ERROR;
1016                 ber_free(ber, 1);
1017                 return( LBER_ERROR );
1018         }
1019
1020         if ( ber_get_enum( ber, &along ) == LBER_ERROR ) {
1021                 ld->ld_errno = LDAP_DECODING_ERROR;
1022                 ber_free(ber, 1);
1023                 return( LBER_ERROR );
1024         }
1025
1026         tag = ber_peek_tag( ber, &len );
1027
1028         if ( tag == LBER_ERROR ) {
1029                 ld->ld_errno = LDAP_DECODING_ERROR;
1030                 ber_free(ber, 1);
1031                 return( LBER_ERROR );
1032         }
1033
1034         *bp = ber;
1035         return tag;
1036 }
1037
1038
1039 static void
1040 merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
1041 {
1042 /*
1043  * Merge error information in "lr" with "parentr" error code and string.
1044  */
1045         if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
1046                 parentr->lr_res_errno = lr->lr_res_errno;
1047                 if ( lr->lr_res_error != NULL ) {
1048                         (void)ldap_append_referral( ld, &parentr->lr_res_error,
1049                             lr->lr_res_error );
1050                 }
1051         } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
1052                 parentr->lr_res_errno == LDAP_SUCCESS )
1053         {
1054                 parentr->lr_res_errno = lr->lr_res_errno;
1055                 if ( parentr->lr_res_error != NULL ) {
1056                         LDAP_FREE( parentr->lr_res_error );
1057                 }
1058                 parentr->lr_res_error = lr->lr_res_error;
1059                 lr->lr_res_error = NULL;
1060                 if ( LDAP_NAME_ERROR( lr->lr_res_errno ) ) {
1061                         if ( parentr->lr_res_matched != NULL ) {
1062                                 LDAP_FREE( parentr->lr_res_matched );
1063                         }
1064                         parentr->lr_res_matched = lr->lr_res_matched;
1065                         lr->lr_res_matched = NULL;
1066                 }
1067         }
1068
1069         Debug( LDAP_DEBUG_TRACE, "merged parent (id %d) error info:  ",
1070             parentr->lr_msgid, 0, 0 );
1071         Debug( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
1072             parentr->lr_res_errno, parentr->lr_res_error ?
1073             parentr->lr_res_error : "", parentr->lr_res_matched ?
1074             parentr->lr_res_matched : "" );
1075 }
1076
1077
1078
1079 int
1080 ldap_msgtype( LDAPMessage *lm )
1081 {
1082         assert( lm != NULL );
1083         return ( lm != NULL ) ? (int)lm->lm_msgtype : -1;
1084 }
1085
1086
1087 int
1088 ldap_msgid( LDAPMessage *lm )
1089 {
1090         assert( lm != NULL );
1091
1092         return ( lm != NULL ) ? lm->lm_msgid : -1;
1093 }
1094
1095
1096 char * ldap_int_msgtype2str( ber_tag_t tag )
1097 {
1098         switch( tag ) {
1099         case LDAP_RES_ADD: return "add";
1100         case LDAP_RES_BIND: return "bind";
1101         case LDAP_RES_COMPARE: return "compare";
1102         case LDAP_RES_DELETE: return "delete";
1103         case LDAP_RES_EXTENDED: return "extended-result";
1104         case LDAP_RES_INTERMEDIATE: return "intermediate";
1105         case LDAP_RES_MODIFY: return "modify";
1106         case LDAP_RES_RENAME: return "rename";
1107         case LDAP_RES_SEARCH_ENTRY: return "search-entry";
1108         case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
1109         case LDAP_RES_SEARCH_RESULT: return "search-result";
1110         }
1111         return "unknown";
1112 }
1113
1114 int
1115 ldap_msgfree( LDAPMessage *lm )
1116 {
1117         LDAPMessage     *next;
1118         int             type = 0;
1119
1120         Debug( LDAP_DEBUG_TRACE, "ldap_msgfree\n", 0, 0, 0 );
1121
1122         for ( ; lm != NULL; lm = next ) {
1123                 next = lm->lm_chain;
1124                 type = lm->lm_msgtype;
1125                 ber_free( lm->lm_ber, 1 );
1126                 LDAP_FREE( (char *) lm );
1127         }
1128
1129         return( type );
1130 }
1131
1132 /*
1133  * ldap_msgdelete - delete a message.  It returns:
1134  *      0       if the entire message was deleted
1135  *      -1      if the message was not found, or only part of it was found
1136  */
1137 int
1138 ldap_msgdelete( LDAP *ld, int msgid )
1139 {
1140         LDAPMessage     *lm, *prev;
1141         int rc = 0;
1142
1143         assert( ld != NULL );
1144
1145         Debug( LDAP_DEBUG_TRACE, "ldap_msgdelete\n", 0, 0, 0 );
1146
1147         prev = NULL;
1148 #ifdef LDAP_R_COMPILE
1149         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
1150 #endif
1151         for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
1152                 if ( lm->lm_msgid == msgid )
1153                         break;
1154                 prev = lm;
1155         }
1156
1157         if ( lm == NULL ) {
1158                 rc = -1;
1159         } else {
1160                 if ( prev == NULL )
1161                         ld->ld_responses = lm->lm_next;
1162                 else
1163                         prev->lm_next = lm->lm_next;
1164         }
1165 #ifdef LDAP_R_COMPILE
1166         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
1167 #endif
1168         if ( lm && ldap_msgfree( lm ) == LDAP_RES_SEARCH_ENTRY )
1169                 rc = -1;
1170
1171         return( rc );
1172 }
1173
1174
1175 /*
1176  * ldap_abandoned
1177  *
1178  * return 1 if message msgid is waiting to be abandoned, 0 otherwise
1179  *
1180  * expects ld_res_mutex to be locked
1181  */
1182 static int
1183 ldap_abandoned( LDAP *ld, ber_int_t msgid )
1184 {
1185         int     i;
1186
1187 #ifdef LDAP_R_COMPILE
1188         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1189 #endif
1190
1191         if ( ld->ld_abandoned == NULL )
1192                 return( 0 );
1193
1194         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1195                 if ( ld->ld_abandoned[i] == msgid )
1196                         return( 1 );
1197
1198         return( 0 );
1199 }
1200
1201
1202 /*
1203  * ldap_mark_abandoned
1204  *
1205  * expects ld_res_mutex to be locked
1206  */
1207 static int
1208 ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
1209 {
1210         int     i;
1211
1212 #ifdef LDAP_R_COMPILE
1213         LDAP_PVT_THREAD_ASSERT_MUTEX_OWNER( &ld->ld_res_mutex );
1214 #endif
1215
1216         if ( ld->ld_abandoned == NULL )
1217                 return( -1 );
1218
1219         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1220                 if ( ld->ld_abandoned[i] == msgid )
1221                         break;
1222
1223         if ( ld->ld_abandoned[i] == -1 )
1224                 return( -1 );
1225
1226         for ( ; ld->ld_abandoned[i] != -1; i++ ) {
1227                 ld->ld_abandoned[i] = ld->ld_abandoned[i + 1];
1228         }
1229
1230         return( 0 );
1231 }