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 1998-2007 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          * Look through the list of responses we have received on
 145          * this association and see if the response we're interested in
 146          * is there.  If it is, return it.  If not, call wait4msg() to
 147          * wait until it arrives or timeout occurs.
 148          */
 149
 150         Debug( LDAP_DEBUG_TRACE,
 151                 "ldap_chkResponseList ld %p msgid %d all %d\n",
 152                 (void *)ld, msgid, all );
 153         lastlm = &ld->ld_responses;
 154         for ( lm = ld->ld_responses; lm != NULL; lm = nextlm ) {
 155                 nextlm = lm->lm_next;
 156
 157                 if ( ldap_abandoned( ld, lm->lm_msgid ) ) {
 158                         Debug( LDAP_DEBUG_TRACE,
 159                                 "ldap_chkResponseList msg abandoned, msgid %d\n",
 160                             msgid, 0, 0 );
 161                         ldap_mark_abandoned( ld, lm->lm_msgid );
 162
 163                         /* Remove this entry from list */
 164                         *lastlm = nextlm;
 165
 166                         ldap_msgfree( lm );
 167
 168                         continue;
 169                 }
 170
 171                 if ( msgid == LDAP_RES_ANY || lm->lm_msgid == msgid ) {
 172                         LDAPMessage     *tmp;
 173
 174                         if ( all == LDAP_MSG_ONE || all == LDAP_MSG_RECEIVED ||
 175                                 msgid == LDAP_RES_UNSOLICITED ) {
 176                                 break;
 177                         }
 178
 179                         tmp = lm->lm_chain_tail;
 180                         if ((tmp->lm_msgtype == LDAP_RES_SEARCH_ENTRY) ||
 181                                 (tmp->lm_msgtype == LDAP_RES_SEARCH_REFERENCE) ||
 182                                 (tmp->lm_msgtype == LDAP_RES_INTERMEDIATE)) {
 183                                 tmp = NULL;
 184                         }
 185
 186                         if ( tmp == NULL ) {
 187                                 lm = NULL;
 188                         }
 189
 190                         break;
 191                 }
 192                 lastlm = &lm->lm_next;
 193         }
 194
 195     if ( lm != NULL ) {
 196                 /* Found an entry, remove it from the list */
 197             if ( all == LDAP_MSG_ONE && lm->lm_chain != NULL ) {
 198                         *lastlm = lm->lm_chain;
 199                         lm->lm_chain->lm_next = lm->lm_next;
 200                         lm->lm_chain->lm_chain_tail = ( lm->lm_chain_tail != lm ) ? lm->lm_chain_tail : lm->lm_chain;
 201                         lm->lm_chain = NULL;
 202                         lm->lm_chain_tail = NULL;
 203             } else {
 204                         *lastlm = lm->lm_next;
 205                 }
 206             lm->lm_next = NULL;
 207     }
 208
 209 #ifdef LDAP_DEBUG
 210         if( lm == NULL) {
 211                 Debug( LDAP_DEBUG_TRACE,
 212                         "ldap_chkResponseList returns ld %p NULL\n", (void *)ld, 0, 0);
 213         } else {
 214                 Debug( LDAP_DEBUG_TRACE,
 215                         "ldap_chkResponseList returns ld %p msgid %d, type 0x%02lu\n",
 216                         (void *)ld, lm->lm_msgid, (unsigned long) lm->lm_msgtype);
 217         }
 218 #endif
 219     return lm;
 220 }
 221
 222 static int
 223 wait4msg(
 224         LDAP *ld,
 225         ber_int_t msgid,
 226         int all,
 227         struct timeval *timeout,
 228         LDAPMessage **result )
 229 {
 230         int             rc;
 231         struct timeval  tv = { 0 },
 232                         tv0 = { 0 },
 233                         *tvp;
 234         time_t          start_time = 0;
 235         time_t          tmp_time;
 236         LDAPConn        *lc;
 237
 238         assert( ld != NULL );
 239         assert( result != NULL );
 240
 241 #ifdef LDAP_DEBUG
 242         if ( timeout == NULL ) {
 243                 Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (infinite timeout)\n",
 244                         (void *)ld, msgid, 0 );
 245         } else {
 246                 Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p msgid %d (timeout %ld usec)\n",
 247                         (void *)ld, msgid, (long)timeout->tv_sec * 1000000 + timeout->tv_usec );
 248         }
 249 #endif /* LDAP_DEBUG */
 250
 251         if ( timeout == NULL ) {
 252                 tvp = NULL;
 253         } else {
 254                 tv0 = *timeout;
 255                 tv = *timeout;
 256                 tvp = &tv;
 257                 start_time = time( NULL );
 258         }
 259
 260         rc = LDAP_MSG_X_KEEP_LOOKING;
 261         while ( rc == LDAP_MSG_X_KEEP_LOOKING ) {
 262 #ifdef LDAP_DEBUG
 263                 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
 264                         Debug( LDAP_DEBUG_TRACE, "wait4msg continue ld %p msgid %d all %d\n",
 265                                 (void *)ld, msgid, all );
 266                         ldap_dump_connection( ld, ld->ld_conns, 1 );
 267                         ldap_dump_requests_and_responses( ld );
 268                 }
 269 #endif /* LDAP_DEBUG */
 270
 271                 if ( (*result = chkResponseList(ld, msgid, all)) != NULL ) {
 272                         rc = (*result)->lm_msgtype;
 273
 274                 } else {
 275                         int lc_ready = 0;
 276
 277 #ifdef LDAP_R_COMPILE
 278                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 279 #endif
 280                         for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
 281                                 if ( ber_sockbuf_ctrl( lc->lconn_sb,
 282                                                 LBER_SB_OPT_DATA_READY, NULL ) ) {
 283 #ifdef LDAP_R_COMPILE
 284                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 285 #endif
 286                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 287 #ifdef LDAP_R_COMPILE
 288                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 289 #endif
 290                                         lc_ready = 1;
 291                                         break;
 292                                 }
 293                         }
 294 #ifdef LDAP_R_COMPILE
 295                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 296 #endif
 297
 298                         if ( !lc_ready ) {
 299                                 rc = ldap_int_select( ld, tvp );
 300 #ifdef LDAP_DEBUG
 301                                 if ( rc == -1 ) {
 302                                         Debug( LDAP_DEBUG_TRACE,
 303                                                 "ldap_int_select returned -1: errno %d\n",
 304                                                 sock_errno(), 0, 0 );
 305                                 }
 306 #endif
 307
 308                                 if ( rc == 0 || ( rc == -1 && (
 309                                         !LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART)
 310                                                 || sock_errno() != EINTR )))
 311                                 {
 312                                         ld->ld_errno = (rc == -1 ? LDAP_SERVER_DOWN :
 313                                                 LDAP_TIMEOUT);
 314                                         return( rc );
 315                                 }
 316
 317                                 if ( rc == -1 ) {
 318                                         rc = LDAP_MSG_X_KEEP_LOOKING;   /* select interrupted: loop */
 319                                 } else {
 320                                         rc = LDAP_MSG_X_KEEP_LOOKING;
 321 #ifdef LDAP_R_COMPILE
 322                                         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 323 #endif
 324                                         if ( ld->ld_requests &&
 325                                                 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
 326                                                 ldap_is_write_ready( ld,
 327                                                         ld->ld_requests->lr_conn->lconn_sb ) )
 328                                         {
 329                                                 ldap_int_flush_request( ld, ld->ld_requests );
 330                                         }
 331 #ifdef LDAP_R_COMPILE
 332                                         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 333                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 334 #endif
 335                                         for ( lc = ld->ld_conns;
 336                                                 rc == LDAP_MSG_X_KEEP_LOOKING && lc != NULL; )
 337                                         {
 338                                                 if ( lc->lconn_status == LDAP_CONNST_CONNECTED &&
 339                                                         ldap_is_read_ready( ld, lc->lconn_sb ))
 340                                                 {
 341 #ifdef LDAP_R_COMPILE
 342                                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 343 #endif
 344                                                         rc = try_read1msg( ld, msgid, all, &lc, result );
 345 #ifdef LDAP_R_COMPILE
 346                                                         ldap_pvt_thread_mutex_lock( &ld->ld_conn_mutex );
 347 #endif
 348                                                         if ( lc == NULL ) {
 349                                                                 /* if lc gets free()'d,
 350                                                                  * there's no guarantee
 351                                                                  * lc->lconn_next is still
 352                                                                  * sane; better restart
 353                                                                  * (ITS#4405) */
 354                                                                 lc = ld->ld_conns;
 355
 356                                                                 /* don't get to next conn! */
 357                                                                 break;
 358                                                         }
 359                                                 }
 360
 361                                                 /* next conn */
 362                                                 lc = lc->lconn_next;
 363                                         }
 364 #ifdef LDAP_R_COMPILE
 365                                         ldap_pvt_thread_mutex_unlock( &ld->ld_conn_mutex );
 366 #endif
 367                                 }
 368                         }
 369                 }
 370
 371                 if ( rc == LDAP_MSG_X_KEEP_LOOKING && tvp != NULL ) {
 372                         time_t  delta_time;
 373
 374                         tmp_time = time( NULL );
 375                         delta_time = tmp_time - start_time;
 376
 377                         /* do not assume time_t is signed */
 378                         if ( tv0.tv_sec <= delta_time ) {
 379                                 rc = 0; /* timed out */
 380                                 ld->ld_errno = LDAP_TIMEOUT;
 381                                 break;
 382                         }
 383                         tv0.tv_sec -= delta_time;
 384                         tv.tv_sec = tv0.tv_sec;
 385
 386                         Debug( LDAP_DEBUG_TRACE, "wait4msg ld %p %ld secs to go\n",
 387                                 (void *)ld, (long) tv.tv_sec, 0 );
 388                         start_time = tmp_time;
 389                 }
 390         }
 391
 392         return( rc );
 393 }
 394
 395
 396 static ber_tag_t
 397 try_read1msg(
 398         LDAP *ld,
 399         ber_int_t msgid,
 400         int all,
 401         LDAPConn **lcp,
 402         LDAPMessage **result )
 403 {
 404         BerElement      *ber;
 405         LDAPMessage     *newmsg, *l, *prev;
 406         ber_int_t       id;
 407         ber_tag_t       tag;
 408         ber_len_t       len;
 409         int             foundit = 0;
 410         LDAPRequest     *lr, *tmplr;
 411         LDAPConn        *lc;
 412         BerElement      tmpber;
 413         int             rc, refer_cnt, hadref, simple_request;
 414         ber_int_t       lderr;
 415
 416 #ifdef LDAP_CONNECTIONLESS
 417         LDAPMessage     *tmp = NULL, *chain_head = NULL;
 418         int             moremsgs = 0, isv2 = 0;
 419 #endif
 420
 421         /*
 422          * v3ref = flag for V3 referral / search reference
 423          * 0 = not a ref, 1 = sucessfully chased ref, -1 = pass ref to application
 424          */
 425         enum {
 426                 V3REF_NOREF     = 0,
 427                 V3REF_SUCCESS   = 1,
 428                 V3REF_TOAPP     = -1
 429         }       v3ref;
 430
 431         assert( ld != NULL );
 432         assert( lcp != NULL );
 433         assert( *lcp != NULL );
 434
 435         Debug( LDAP_DEBUG_TRACE, "read1msg: ld %p msgid %d all %d\n",
 436                 (void *)ld, msgid, all );
 437
 438         lc = *lcp;
 439
 440 retry:
 441         if ( lc->lconn_ber == NULL ) {
 442                 lc->lconn_ber = ldap_alloc_ber_with_options(ld);
 443
 444                 if( lc->lconn_ber == NULL ) {
 445                         return -1;
 446                 }
 447         }
 448
 449         ber = lc->lconn_ber;
 450         assert( LBER_VALID (ber) );
 451
 452         /* get the next message */
 453         sock_errset(0);
 454 #ifdef LDAP_CONNECTIONLESS
 455         if ( LDAP_IS_UDP(ld) ) {
 456                 struct sockaddr from;
 457                 ber_int_sb_read( lc->lconn_sb, &from, sizeof(struct sockaddr) );
 458                 if (ld->ld_options.ldo_version == LDAP_VERSION2) isv2=1;
 459         }
 460 nextresp3:
 461 #endif
 462         tag = ber_get_next( lc->lconn_sb, &len, ber );
 463         if ( tag == LDAP_TAG_MESSAGE ) {
 464                 /*
 465                  * We read a complete message.
 466                  * The connection should no longer need this ber.
 467                  */
 468                 lc->lconn_ber = NULL;
 469         }
 470         if ( tag != LDAP_TAG_MESSAGE ) {
 471                 if ( tag == LBER_DEFAULT) {
 472 #ifdef LDAP_DEBUG
 473                         Debug( LDAP_DEBUG_CONNS,
 474                                 "ber_get_next failed.\n", 0, 0, 0 );
 475 #endif
 476 #ifdef EWOULDBLOCK
 477                         if ( sock_errno() == EWOULDBLOCK ) return LDAP_MSG_X_KEEP_LOOKING;
 478 #endif
 479 #ifdef EAGAIN
 480                         if ( sock_errno() == EAGAIN ) return LDAP_MSG_X_KEEP_LOOKING;
 481 #endif
 482                         ld->ld_errno = LDAP_SERVER_DOWN;
 483                         return -1;
 484                 }
 485                 ld->ld_errno = LDAP_LOCAL_ERROR;
 486                 return -1;
 487         }
 488
 489         /* message id */
 490         if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
 491                 ber_free( ber, 1 );
 492                 ld->ld_errno = LDAP_DECODING_ERROR;
 493                 return( -1 );
 494         }
 495
 496         /* if it's been abandoned, toss it */
 497         if ( ldap_abandoned( ld, id ) ) {
 498                 Debug( LDAP_DEBUG_ANY, "abandoned ld %p msgid %ld\n",
 499                         (void *)ld, (long) id, 0);
 500 retry_ber:
 501                 ber_free( ber, 1 );
 502                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 503                         goto retry;
 504                 }
 505                 return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
 506         }
 507
 508         lr = ldap_find_request_by_msgid( ld, id );
 509         if ( lr == NULL ) {
 510                 Debug( LDAP_DEBUG_ANY,
 511                         "no request for response on ld %p msgid %ld (tossing)\n",
 512                         (void *)ld, (long) id, 0 );
 513                 goto retry_ber;
 514         }
 515 #ifdef LDAP_CONNECTIONLESS
 516         if (LDAP_IS_UDP(ld) && isv2) {
 517                 ber_scanf(ber, "x{");
 518         }
 519 nextresp2:
 520 #endif
 521         /* the message type */
 522         if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
 523                 ld->ld_errno = LDAP_DECODING_ERROR;
 524                 ber_free( ber, 1 );
 525                 return( -1 );
 526         }
 527
 528         Debug( LDAP_DEBUG_TRACE,
 529                 "read1msg: ld %p msgid %ld message type %s\n",
 530                 (void *)ld, (long) lr->lr_msgid, ldap_int_msgtype2str( tag ));
 531
 532         id = lr->lr_origid;
 533         refer_cnt = 0;
 534         hadref = simple_request = 0;
 535         rc = LDAP_MSG_X_KEEP_LOOKING;   /* default is to keep looking (no response found) */
 536         lr->lr_res_msgtype = tag;
 537
 538         /*
 539          * This code figures out if we are going to chase a
 540          * referral / search reference, or pass it back to the application
 541          */
 542         v3ref = V3REF_NOREF;    /* Assume not a V3 search reference/referral */
 543         if( (tag != LDAP_RES_SEARCH_ENTRY) && (ld->ld_version > LDAP_VERSION2) ) {
 544                 BerElement      tmpber = *ber;  /* struct copy */
 545                 char **refs = NULL;
 546
 547                 if( tag == LDAP_RES_SEARCH_REFERENCE ) {
 548                         /* This is a V3 search reference */
 549                         /* Assume we do not chase the reference,
 550                          * but pass it to application */
 551                         v3ref = V3REF_TOAPP;
 552                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
 553                                         (lr->lr_parent != NULL) )
 554                         {
 555                                 /* Get the referral list */
 556                                 if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
 557                                         rc = LDAP_DECODING_ERROR;
 558                                 } else {
 559                                         /* Note: refs array is freed by ldap_chase_v3referrals */
 560                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 561                                             1, &lr->lr_res_error, &hadref );
 562                                         if ( refer_cnt > 0 ) {
 563                                                 /* sucessfully chased reference */
 564                                                 /* If haven't got end search, set chasing referrals */
 565                                                 if( lr->lr_status != LDAP_REQST_COMPLETED) {
 566                                                         lr->lr_status = LDAP_REQST_CHASINGREFS;
 567                                                         Debug( LDAP_DEBUG_TRACE,
 568                                                                 "read1msg:  search ref chased, "
 569                                                                 "mark request chasing refs, "
 570                                                                 "id = %d\n",
 571                                                                 lr->lr_msgid, 0, 0);
 572                                                 }
 573
 574                                                 /* We successfully chased the reference */
 575                                                 v3ref = V3REF_SUCCESS;
 576                                         }
 577                                 }
 578                         }
 579                 } else {
 580                         /* Check for V3 referral */
 581                         ber_len_t       len;
 582                         char            *lr_res_error = NULL;
 583
 584 #ifdef LDAP_NULL_IS_NULL
 585                         if ( ber_scanf( &tmpber, "{eAA",/*}*/ &lderr,
 586                                     &lr->lr_res_matched, &lr_res_error )
 587                                     != LBER_ERROR )
 588 #else /* ! LDAP_NULL_IS_NULL */
 589                         if ( ber_scanf( &tmpber, "{eaa",/*}*/ &lderr,
 590                                     &lr->lr_res_matched, &lr_res_error )
 591                                     != LBER_ERROR )
 592 #endif /* ! LDAP_NULL_IS_NULL */
 593                         {
 594                                 if ( lr_res_error != NULL ) {
 595 #ifndef LDAP_NULL_IS_NULL
 596                                         if ( lr_res_error[ 0 ] == '\0' ) {
 597                                                 LDAP_FREE( lr_res_error );
 598                                                 lr_res_error = NULL;
 599                                         } else
 600 #endif /* ! LDAP_NULL_IS_NULL */
 601                                         {
 602                                                 if ( lr->lr_res_error != NULL ) {
 603                                                         (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 604                                                         LDAP_FREE( (char *)lr_res_error );
 605
 606                                                 } else {
 607                                                         lr->lr_res_error = lr_res_error;
 608                                                 }
 609                                         }
 610                                         lr_res_error = NULL;
 611                                 }
 612
 613                                 /* Check if V3 referral */
 614                                 if ( ber_peek_tag( &tmpber, &len ) == LDAP_TAG_REFERRAL ) {
 615                                         /* We have a V3 referral, assume we cannot chase it */
 616                                         v3ref = V3REF_TOAPP;
 617                                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS)
 618                                                          || (lr->lr_parent != NULL) )
 619                                         {
 620                                                 /* Get the referral list */
 621                                                 if( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
 622                                                         rc = LDAP_DECODING_ERROR;
 623                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 624                                                         Debug( LDAP_DEBUG_TRACE,
 625                                                                 "read1msg: referral decode error, mark request completed, ld %p msgid %d\n",
 626                                                                 (void *)ld, lr->lr_msgid, 0);
 627                                                 } else {
 628                                                         /* Chase the referral
 629                                                          * Note: refs arrary is freed by ldap_chase_v3referrals
 630                                                          */
 631                                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 632                                                             0, &lr->lr_res_error, &hadref );
 633                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 634                                                         Debug( LDAP_DEBUG_TRACE,
 635                                                                 "read1msg: referral %s chased, "
 636                                                                 "mark request completed, ld %p msgid %d\n",
 637                                                                 hadref ? "" : "not",
 638                                                                 (void *)ld, lr->lr_msgid);
 639                                                         if( refer_cnt > 0) {
 640                                                                 /* Referral successfully chased */
 641                                                                 v3ref = V3REF_SUCCESS;
 642                                                         } else {
 643                                                                 refer_cnt = 0;
 644                                                         }
 645                                                 }
 646                                         }
 647                                 }
 648
 649                                 if( lr->lr_res_matched != NULL ) {
 650                                         LDAP_FREE( lr->lr_res_matched );
 651                                         lr->lr_res_matched = NULL;
 652                                 }
 653                                 if( lr->lr_res_error != NULL ) {
 654                                         LDAP_FREE( lr->lr_res_error );
 655                                         lr->lr_res_error = NULL;
 656                                 }
 657                         }
 658                 }
 659         }
 660
 661         /* All results that just return a status, i.e. don't return data
 662          * go through the following code.  This code also chases V2 referrals
 663          * and checks if all referrals have been chased.
 664          */
 665         if ( tag != LDAP_RES_SEARCH_ENTRY &&
 666                 tag != LDAP_RES_SEARCH_REFERENCE &&
 667                 tag != LDAP_RES_INTERMEDIATE )
 668         {
 669                 /* For a v3 search referral/reference, only come here if already chased it */
 670                 if ( ld->ld_version >= LDAP_VERSION2 &&
 671                         v3ref != V3REF_TOAPP &&
 672                         ( lr->lr_parent != NULL ||
 673                         LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ) )
 674                 {
 675                         char            *lr_res_error = NULL;
 676
 677                         tmpber = *ber;  /* struct copy */
 678                         if ( v3ref == V3REF_SUCCESS ) {
 679                                 /* V3 search reference or V3 referral
 680                                  * sucessfully chased. If this message
 681                                  * is a search result, then it has no more
 682                                  * outstanding referrals.
 683                                  */
 684                                 if ( tag == LDAP_RES_SEARCH_RESULT )
 685                                         refer_cnt = 0;
 686 #ifdef LDAP_NULL_IS_NULL
 687                         } else if ( ber_scanf( &tmpber, "{eAA}", &lderr,
 688                                 &lr->lr_res_matched, &lr_res_error )
 689                                 != LBER_ERROR )
 690 #else /* ! LDAP_NULL_IS_NULL */
 691                         } else if ( ber_scanf( &tmpber, "{eaa}", &lderr,
 692                                 &lr->lr_res_matched, &lr_res_error )
 693                                 != LBER_ERROR )
 694 #endif /* ! LDAP_NULL_IS_NULL */
 695                         {
 696                                 if ( lr_res_error != NULL ) {
 697 #ifndef LDAP_NULL_IS_NULL
 698                                         if ( lr_res_error[ 0 ] == '\0' ) {
 699                                                 LDAP_FREE( lr_res_error );
 700                                         } else
 701 #endif /* ! LDAP_NULL_IS_NULL */
 702                                         {
 703                                                 if ( lr->lr_res_error != NULL ) {
 704                                                         (void)ldap_append_referral( ld, &lr->lr_res_error, lr_res_error );
 705                                                         LDAP_FREE( (char *)lr_res_error );
 706                                                 } else {
 707                                                         lr->lr_res_error = lr_res_error;
 708                                                 }
 709                                         }
 710                                         lr_res_error = NULL;
 711                                 }
 712
 713                                 switch ( lderr ) {
 714                                 case LDAP_SUCCESS:
 715                                 case LDAP_COMPARE_TRUE:
 716                                 case LDAP_COMPARE_FALSE:
 717                                         break;
 718
 719                                 default:
 720                                         if ( lr->lr_res_error == NULL
 721                                                 || lr->lr_res_error[ 0 ] == '\0' )
 722                                         {
 723                                                 break;
 724                                         }
 725
 726                                         /* referrals are in error string */
 727                                         refer_cnt = ldap_chase_referrals( ld, lr,
 728                                                 &lr->lr_res_error, -1, &hadref );
 729                                         lr->lr_status = LDAP_REQST_COMPLETED;
 730                                         Debug( LDAP_DEBUG_TRACE,
 731                                                 "read1msg:  V2 referral chased, "
 732                                                 "mark request completed, id = %d\n",
 733                                                 lr->lr_msgid, 0, 0 );
 734                                         break;
 735                                 }
 736
 737                                 /* save errno, message, and matched string */
 738                                 if ( !hadref || lr->lr_res_error == NULL ) {
 739                                         lr->lr_res_errno = ( lderr ==
 740                                         LDAP_PARTIAL_RESULTS ) ? LDAP_SUCCESS
 741                                         : lderr;
 742                                 } else if ( ld->ld_errno != LDAP_SUCCESS ) {
 743                                         lr->lr_res_errno = ld->ld_errno;
 744                                 } else {
 745                                         lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
 746                                 }
 747
 748                                 Debug( LDAP_DEBUG_TRACE, "new result:  "
 749                                         "res_errno: %d, "
 750                                         "res_error: <%s>, "
 751                                         "res_matched: <%s>\n",
 752                                         lr->lr_res_errno,
 753                                         lr->lr_res_error ? lr->lr_res_error : "",
 754                                         lr->lr_res_matched ? lr->lr_res_matched : "" );
 755                         }
 756
 757                         /* in any case, don't leave any lr_res_error 'round */
 758                         if ( lr_res_error ) {
 759                                 LDAP_FREE( lr_res_error );
 760                         }
 761                 }
 762
 763                 Debug( LDAP_DEBUG_TRACE,
 764                         "read1msg: ld %p %d new referrals\n",
 765                         (void *)ld, refer_cnt, 0 );
 766
 767                 if ( refer_cnt != 0 ) { /* chasing referrals */
 768                         ber_free( ber, 1 );
 769                         ber = NULL;
 770                         if ( refer_cnt < 0 ) {
 771                                 return( -1 );   /* fatal error */
 772                         }
 773                         lr->lr_res_errno = LDAP_SUCCESS; /* sucessfully chased referral */
 774                 } else {
 775                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
 776                                 /* request without any referrals */
 777                                 simple_request = ( hadref ? 0 : 1 );
 778                         } else {
 779                                 /* request with referrals or child request */
 780                                 ber_free( ber, 1 );
 781                                 ber = NULL;
 782                         }
 783
 784                         lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
 785                         Debug( LDAP_DEBUG_TRACE,
 786                                 "read1msg:  mark request completed, ld %p msgid %d\n",
 787                                 (void *)ld, lr->lr_msgid, 0);
 788                         while ( lr->lr_parent != NULL ) {
 789                                 merge_error_info( ld, lr->lr_parent, lr );
 790
 791                                 lr = lr->lr_parent;
 792                                 if ( --lr->lr_outrefcnt > 0 ) {
 793                                         break;  /* not completely done yet */
 794                                 }
 795                         }
 796
 797                         /* Check if all requests are finished, lr is now parent */
 798                         tmplr = lr;
 799                         if (tmplr->lr_status == LDAP_REQST_COMPLETED) {
 800                                 for ( tmplr=lr->lr_child;
 801                                         tmplr != NULL;
 802                                         tmplr=tmplr->lr_refnext)
 803                                 {
 804                                         if( tmplr->lr_status != LDAP_REQST_COMPLETED) break;
 805                                 }
 806                         }
 807
 808                         /* This is the parent request if the request has referrals */
 809                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL &&
 810                                 tmplr == NULL )
 811                         {
 812                                 id = lr->lr_msgid;
 813                                 tag = lr->lr_res_msgtype;
 814                                 Debug( LDAP_DEBUG_ANY, "request done: ld %p msgid %ld\n",
 815                                         (void *)ld, (long) id, 0 );
 816 Debug( LDAP_DEBUG_TRACE,
 817 "res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 818 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 819 lr->lr_res_matched ? lr->lr_res_matched : "" );
 820                                 if ( !simple_request ) {
 821                                         ber_free( ber, 1 );
 822                                         ber = NULL;
 823                                         if ( build_result_ber( ld, &ber, lr )
 824                                             == LBER_ERROR ) {
 825                                                 rc = -1; /* fatal error */
 826                                         }
 827                                 }
 828
 829 #ifdef LDAP_R_COMPILE
 830                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 831 #endif
 832                                 ldap_free_request( ld, lr );
 833 #ifdef LDAP_R_COMPILE
 834                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 835 #endif
 836                         }
 837
 838                         if ( lc != NULL ) {
 839 #ifdef LDAP_R_COMPILE
 840                                 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 841 #endif
 842                                 ldap_free_connection( ld, lc, 0, 1 );
 843 #ifdef LDAP_R_COMPILE
 844                                 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 845 #endif
 846                                 lc = *lcp = NULL;
 847                         }
 848                 }
 849         }
 850
 851         if ( ber == NULL ) {
 852                 return( rc );
 853         }
 854
 855         /* make a new ldap message */
 856         newmsg = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) );
 857         if ( newmsg == NULL ) {
 858                 ld->ld_errno = LDAP_NO_MEMORY;
 859                 return( -1 );
 860         }
 861         newmsg->lm_msgid = (int)id;
 862         newmsg->lm_msgtype = tag;
 863         newmsg->lm_ber = ber;
 864         newmsg->lm_chain_tail = newmsg;
 865
 866 #ifdef LDAP_CONNECTIONLESS
 867         /* CLDAP replies all fit in a single datagram. In LDAPv2 RFC1798
 868          * the responses are all a sequence wrapped in one message. In
 869          * LDAPv3 each response is in its own message. The datagram must
 870          * end with a SearchResult. We can't just parse each response in
 871          * separate calls to try_read1msg because the header info is only
 872          * present at the beginning of the datagram, not at the beginning
 873          * of each response. So parse all the responses at once and queue
 874          * them up, then pull off the first response to return to the
 875          * caller when all parsing is complete.
 876          */
 877         if ( LDAP_IS_UDP(ld) ) {
 878                 /* If not a result, look for more */
 879                 if ( tag != LDAP_RES_SEARCH_RESULT ) {
 880                         int ok = 0;
 881                         moremsgs = 1;
 882                         if (isv2) {
 883                                 /* LDAPv2: dup the current ber, skip past the current
 884                                  * response, and see if there are any more after it.
 885                                  */
 886                                 ber = ber_dup( ber );
 887                                 ber_scanf( ber, "x" );
 888                                 if (ber_peek_tag(ber, &len) != LBER_DEFAULT) {
 889                                         /* There's more - dup the ber buffer so they can all be
 890                                          * individually freed by ldap_msgfree.
 891                                          */
 892                                         struct berval bv;
 893                                         ber_get_option(ber, LBER_OPT_BER_REMAINING_BYTES, &len);
 894                                         bv.bv_val = LDAP_MALLOC(len);
 895                                         if (bv.bv_val) {
 896                                                 ok=1;
 897                                                 ber_read(ber, bv.bv_val, len);
 898                                                 bv.bv_len = len;
 899                                                 ber_init2(ber, &bv, ld->ld_lberoptions );
 900                                         }
 901                                 }
 902                         } else {
 903                                 /* LDAPv3: Just allocate a new ber. Since this is a buffered
 904                                  * datagram, if the sockbuf is readable we still have data
 905                                  * to parse.
 906                                  */
 907                                 ber = ldap_alloc_ber_with_options( ld );
 908                                 if ( ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) ok = 1;
 909                         }
 910                         /* set up response chain */
 911                         if ( tmp == NULL ) {
 912                                 newmsg->lm_next = ld->ld_responses;
 913                                 ld->ld_responses = newmsg;
 914                                 chain_head = newmsg;
 915                         } else {
 916                                 tmp->lm_chain = newmsg;
 917                         }
 918                         chain_head->lm_chain_tail = newmsg;
 919                         tmp = newmsg;
 920                         /* "ok" means there's more to parse */
 921                         if (ok) {
 922                                 if (isv2) goto nextresp2;
 923                                 else goto nextresp3;
 924                         } else {
 925                                 /* got to end of datagram without a SearchResult. Free
 926                                  * our dup'd ber, but leave any buffer alone. For v2 case,
 927                                  * the previous response is still using this buffer. For v3,
 928                                  * the new ber has no buffer to free yet.
 929                                  */
 930                                 ber_free(ber, 0);
 931                                 return -1;
 932                         }
 933                 } else if ( moremsgs ) {
 934                 /* got search result, and we had multiple responses in 1 datagram.
 935                  * stick the result onto the end of the chain, and then pull the
 936                  * first response off the head of the chain.
 937                  */
 938                         tmp->lm_chain = newmsg;
 939                         chain_head->lm_chain_tail = newmsg;
 940                         *result = chkResponseList( ld, msgid, all );
 941                         ld->ld_errno = LDAP_SUCCESS;
 942                         return( (*result)->lm_msgtype );
 943                 }
 944         }
 945 #endif /* LDAP_CONNECTIONLESS */
 946
 947         /* is this the one we're looking for? */
 948         if ( msgid == LDAP_RES_ANY || id == msgid ) {
 949                 if ( all == LDAP_MSG_ONE
 950                     || (newmsg->lm_msgtype != LDAP_RES_SEARCH_RESULT
 951                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 952                     && newmsg->lm_msgtype != LDAP_RES_SEARCH_REFERENCE) ) {
 953                         *result = newmsg;
 954                         ld->ld_errno = LDAP_SUCCESS;
 955                         return( tag );
 956                 } else if ( newmsg->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
 957                         foundit = 1;    /* return the chain later */
 958                 }
 959         }
 960
 961         /*
 962          * if not, we must add it to the list of responses.  if
 963          * the msgid is already there, it must be part of an existing
 964          * search response.
 965          */
 966
 967         prev = NULL;
 968         for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
 969                 if ( l->lm_msgid == newmsg->lm_msgid )
 970                         break;
 971                 prev = l;
 972         }
 973
 974         /* not part of an existing search response */
 975         if ( l == NULL ) {
 976                 if ( foundit ) {
 977                         *result = newmsg;
 978                         goto exit;
 979                 }
 980
 981                 newmsg->lm_next = ld->ld_responses;
 982                 ld->ld_responses = newmsg;
 983                 goto exit;
 984         }
 985
 986         Debug( LDAP_DEBUG_TRACE, "adding response ld %p msgid %ld type %ld:\n",
 987                 (void *)ld, (long) newmsg->lm_msgid, (long) newmsg->lm_msgtype );
 988
 989         /* part of a search response - add to end of list of entries */
 990         l->lm_chain_tail->lm_chain = newmsg;
 991         l->lm_chain_tail = newmsg;
 992
 993         /* return the whole chain if that's what we were looking for */
 994         if ( foundit ) {
 995                 if ( prev == NULL )
 996                         ld->ld_responses = l->lm_next;
 997                 else
 998                         prev->lm_next = l->lm_next;
 999                 *result = l;
1000         }
1001
1002 exit:
1003         if ( foundit ) {
1004                 ld->ld_errno = LDAP_SUCCESS;
1005                 return( tag );
1006         }
1007         if ( lc && ber_sockbuf_ctrl( lc->lconn_sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
1008                 goto retry;
1009         }
1010         return( LDAP_MSG_X_KEEP_LOOKING );      /* continue looking */
1011 }
1012
1013
1014 static ber_tag_t
1015 build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
1016 {
1017         ber_len_t       len;
1018         ber_tag_t       tag;
1019         ber_int_t       along;
1020         BerElement *ber;
1021
1022         *bp = NULL;
1023         ber = ldap_alloc_ber_with_options( ld );
1024
1025         if( ber == NULL ) {
1026                 ld->ld_errno = LDAP_NO_MEMORY;
1027                 return LBER_ERROR;
1028         }
1029
1030         if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
1031                 lr->lr_res_msgtype, lr->lr_res_errno,
1032                 lr->lr_res_matched ? lr->lr_res_matched : "",
1033                 lr->lr_res_error ? lr->lr_res_error : "" ) == -1 )
1034         {
1035                 ld->ld_errno = LDAP_ENCODING_ERROR;
1036                 ber_free(ber, 1);
1037                 return( LBER_ERROR );
1038         }
1039
1040         ber_reset( ber, 1 );
1041
1042         if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
1043                 ld->ld_errno = LDAP_DECODING_ERROR;
1044                 ber_free(ber, 1);
1045                 return( LBER_ERROR );
1046         }
1047
1048         if ( ber_get_enum( ber, &along ) == LBER_ERROR ) {
1049                 ld->ld_errno = LDAP_DECODING_ERROR;
1050                 ber_free(ber, 1);
1051                 return( LBER_ERROR );
1052         }
1053
1054         tag = ber_peek_tag( ber, &len );
1055
1056         if ( tag == LBER_ERROR ) {
1057                 ld->ld_errno = LDAP_DECODING_ERROR;
1058                 ber_free(ber, 1);
1059                 return( LBER_ERROR );
1060         }
1061
1062         *bp = ber;
1063         return tag;
1064 }
1065
1066
1067 static void
1068 merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
1069 {
1070 /*
1071  * Merge error information in "lr" with "parentr" error code and string.
1072  */
1073         if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
1074                 parentr->lr_res_errno = lr->lr_res_errno;
1075                 if ( lr->lr_res_error != NULL ) {
1076                         (void)ldap_append_referral( ld, &parentr->lr_res_error,
1077                             lr->lr_res_error );
1078                 }
1079         } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
1080                 parentr->lr_res_errno == LDAP_SUCCESS )
1081         {
1082                 parentr->lr_res_errno = lr->lr_res_errno;
1083                 if ( parentr->lr_res_error != NULL ) {
1084                         LDAP_FREE( parentr->lr_res_error );
1085                 }
1086                 parentr->lr_res_error = lr->lr_res_error;
1087                 lr->lr_res_error = NULL;
1088                 if ( LDAP_NAME_ERROR( lr->lr_res_errno ) ) {
1089                         if ( parentr->lr_res_matched != NULL ) {
1090                                 LDAP_FREE( parentr->lr_res_matched );
1091                         }
1092                         parentr->lr_res_matched = lr->lr_res_matched;
1093                         lr->lr_res_matched = NULL;
1094                 }
1095         }
1096
1097         Debug( LDAP_DEBUG_TRACE, "merged parent (id %d) error info:  ",
1098             parentr->lr_msgid, 0, 0 );
1099         Debug( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
1100             parentr->lr_res_errno, parentr->lr_res_error ?
1101             parentr->lr_res_error : "", parentr->lr_res_matched ?
1102             parentr->lr_res_matched : "" );
1103 }
1104
1105
1106
1107 int
1108 ldap_msgtype( LDAPMessage *lm )
1109 {
1110         assert( lm != NULL );
1111         return ( lm != NULL ) ? (int)lm->lm_msgtype : -1;
1112 }
1113
1114
1115 int
1116 ldap_msgid( LDAPMessage *lm )
1117 {
1118         assert( lm != NULL );
1119
1120         return ( lm != NULL ) ? lm->lm_msgid : -1;
1121 }
1122
1123
1124 char * ldap_int_msgtype2str( ber_tag_t tag )
1125 {
1126         switch( tag ) {
1127         case LDAP_RES_ADD: return "add";
1128         case LDAP_RES_BIND: return "bind";
1129         case LDAP_RES_COMPARE: return "compare";
1130         case LDAP_RES_DELETE: return "delete";
1131         case LDAP_RES_EXTENDED: return "extended-result";
1132         case LDAP_RES_INTERMEDIATE: return "intermediate";
1133         case LDAP_RES_MODIFY: return "modify";
1134         case LDAP_RES_RENAME: return "rename";
1135         case LDAP_RES_SEARCH_ENTRY: return "search-entry";
1136         case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
1137         case LDAP_RES_SEARCH_RESULT: return "search-result";
1138         }
1139         return "unknown";
1140 }
1141
1142 int
1143 ldap_msgfree( LDAPMessage *lm )
1144 {
1145         LDAPMessage     *next;
1146         int             type = 0;
1147
1148         Debug( LDAP_DEBUG_TRACE, "ldap_msgfree\n", 0, 0, 0 );
1149
1150         for ( ; lm != NULL; lm = next ) {
1151                 next = lm->lm_chain;
1152                 type = lm->lm_msgtype;
1153                 ber_free( lm->lm_ber, 1 );
1154                 LDAP_FREE( (char *) lm );
1155         }
1156
1157         return( type );
1158 }
1159
1160 /*
1161  * ldap_msgdelete - delete a message.  It returns:
1162  *      0       if the entire message was deleted
1163  *      -1      if the message was not found, or only part of it was found
1164  */
1165 int
1166 ldap_msgdelete( LDAP *ld, int msgid )
1167 {
1168         LDAPMessage     *lm, *prev;
1169         int rc = 0;
1170
1171         assert( ld != NULL );
1172
1173         Debug( LDAP_DEBUG_TRACE, "ldap_msgdelete\n", 0, 0, 0 );
1174
1175         prev = NULL;
1176 #ifdef LDAP_R_COMPILE
1177         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
1178 #endif
1179         for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
1180                 if ( lm->lm_msgid == msgid )
1181                         break;
1182                 prev = lm;
1183         }
1184
1185         if ( lm == NULL ) {
1186                 rc = -1;
1187         } else {
1188                 if ( prev == NULL )
1189                         ld->ld_responses = lm->lm_next;
1190                 else
1191                         prev->lm_next = lm->lm_next;
1192         }
1193 #ifdef LDAP_R_COMPILE
1194         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
1195 #endif
1196         if ( lm && ldap_msgfree( lm ) == LDAP_RES_SEARCH_ENTRY )
1197                 rc = -1;
1198
1199         return( rc );
1200 }
1201
1202
1203 /*
1204  * return 1 if message msgid is waiting to be abandoned, 0 otherwise
1205  */
1206 static int
1207 ldap_abandoned( LDAP *ld, ber_int_t msgid )
1208 {
1209         int     i;
1210
1211         if ( ld->ld_abandoned == NULL )
1212                 return( 0 );
1213
1214         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1215                 if ( ld->ld_abandoned[i] == msgid )
1216                         return( 1 );
1217
1218         return( 0 );
1219 }
1220
1221
1222 static int
1223 ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
1224 {
1225         int     i;
1226
1227         if ( ld->ld_abandoned == NULL )
1228                 return( -1 );
1229
1230         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1231                 if ( ld->ld_abandoned[i] == msgid )
1232                         break;
1233
1234         if ( ld->ld_abandoned[i] == -1 )
1235                 return( -1 );
1236
1237         for ( ; ld->ld_abandoned[i] != -1; i++ ) {
1238                 ld->ld_abandoned[i] = ld->ld_abandoned[i + 1];
1239         }
1240
1241         return( 0 );
1242 }