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 1998-2004 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, Sockbuf *sb, 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
  82 /*
  83  * ldap_result - wait for an ldap result response to a message from the
  84  * ldap server.  If msgid is LDAP_RES_ANY (-1), any message will be
  85  * accepted.  If msgid is LDAP_RES_UNSOLICITED (0), any unsolicited
  86  * message is accepted.  Otherwise ldap_result will wait for a response
  87  * with msgid.  If all is LDAP_MSG_ONE (0) the first message with id
  88  * msgid will be accepted, otherwise, ldap_result will wait for all
  89  * responses with id msgid and then return a pointer to the entire list
  90  * of messages.  In general, this is only useful for search responses,
  91  * which can be of three message types (zero or more entries, zero or
  92  * search references, followed by an ldap result).  An extension to
  93  * LDAPv3 allows partial extended responses to be returned in response
  94  * to any request.  The type of the first message received is returned.
  95  * When waiting, any messages that have been abandoned are discarded.
  96  *
  97  * Example:
  98  *      ldap_result( s, msgid, all, timeout, result )
  99  */
 100 int
 101 ldap_result(
 102         LDAP *ld,
 103         int msgid,
 104         int all,
 105         struct timeval *timeout,
 106         LDAPMessage **result )
 107 {
 108         LDAPMessage     *lm;
 109         int     rc;
 110
 111         assert( ld != NULL );
 112         assert( result != NULL );
 113
 114 #ifdef NEW_LOGGING
 115         LDAP_LOG ( OPERATION, ARGS, "ldap_result msgid %d\n", msgid, 0, 0 );
 116 #else
 117         Debug( LDAP_DEBUG_TRACE, "ldap_result msgid %d\n", msgid, 0, 0 );
 118 #endif
 119
 120 #ifdef LDAP_R_COMPILE
 121         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
 122 #endif
 123         lm = chkResponseList(ld, msgid, all);
 124
 125         if ( lm == NULL ) {
 126                 rc = wait4msg( ld, msgid, all, timeout, result );
 127         } else {
 128                 *result = lm;
 129                 ld->ld_errno = LDAP_SUCCESS;
 130                 rc = lm->lm_msgtype;
 131         }
 132 #ifdef LDAP_R_COMPILE
 133         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
 134 #endif
 135         return( rc );
 136 }
 137
 138 static LDAPMessage *
 139 chkResponseList(
 140         LDAP *ld,
 141         int msgid,
 142         int all)
 143 {
 144         LDAPMessage     *lm, *lastlm, *nextlm;
 145     /*
 146          * Look through the list of responses we have received on
 147          * this association and see if the response we're interested in
 148          * is there.  If it is, return it.  If not, call wait4msg() to
 149          * wait until it arrives or timeout occurs.
 150          */
 151
 152 #ifdef NEW_LOGGING
 153         LDAP_LOG ( OPERATION, ARGS, "ldap_chkResponseList for msgid=%d, all=%d\n",
 154                 msgid, all, 0 );
 155 #else
 156         Debug( LDAP_DEBUG_TRACE,
 157                 "ldap_chkResponseList for msgid=%d, all=%d\n",
 158             msgid, all, 0 );
 159 #endif
 160         lastlm = NULL;
 161         for ( lm = ld->ld_responses; lm != NULL; lm = nextlm ) {
 162                 nextlm = lm->lm_next;
 163
 164                 if ( ldap_abandoned( ld, lm->lm_msgid ) ) {
 165 #ifdef NEW_LOGGING
 166                         LDAP_LOG ( OPERATION, DETAIL1,
 167                                 "ldap_chkResponseList msg abandoned, msgid %d\n", msgid, 0, 0 );
 168 #else
 169                         Debug( LDAP_DEBUG_TRACE,
 170                                 "ldap_chkResponseList msg abandoned, msgid %d\n",
 171                             msgid, 0, 0 );
 172 #endif
 173                         ldap_mark_abandoned( ld, lm->lm_msgid );
 174
 175                         if ( lastlm == NULL ) {
 176                                 /* Remove first entry in list */
 177                                 ld->ld_responses = lm->lm_next;
 178                         } else {
 179                                 lastlm->lm_next = nextlm;
 180                         }
 181
 182                         ldap_msgfree( lm );
 183
 184                         continue;
 185                 }
 186
 187                 if ( msgid == LDAP_RES_ANY || lm->lm_msgid == msgid ) {
 188                         LDAPMessage     *tmp;
 189
 190                         if ( all == LDAP_MSG_ONE || msgid == LDAP_RES_UNSOLICITED ) {
 191                                 break;
 192                         }
 193
 194                         for ( tmp = lm; tmp != NULL; tmp = tmp->lm_chain ) {
 195                                 if ( tmp->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 196                                     && tmp->lm_msgtype != LDAP_RES_SEARCH_REFERENCE
 197                                         && tmp->lm_msgtype != LDAP_RES_INTERMEDIATE )
 198                                 {
 199                                         break;
 200                                 }
 201                         }
 202
 203                         if ( tmp == NULL ) {
 204                                 lm = NULL;
 205                         }
 206
 207                         break;
 208                 }
 209                 lastlm = lm;
 210         }
 211
 212     if ( lm != NULL ) {
 213                 /* Found an entry, remove it from the list */
 214             if ( lastlm == NULL ) {
 215                     ld->ld_responses = (all == LDAP_MSG_ONE && lm->lm_chain != NULL
 216                         ? lm->lm_chain : lm->lm_next);
 217             } else {
 218                     lastlm->lm_next = (all == LDAP_MSG_ONE && lm->lm_chain != NULL
 219                         ? lm->lm_chain : lm->lm_next);
 220             }
 221             if ( all == LDAP_MSG_ONE && lm->lm_chain != NULL ) {
 222                     lm->lm_chain->lm_next = lm->lm_next;
 223                     lm->lm_chain = NULL;
 224             }
 225             lm->lm_next = NULL;
 226     }
 227
 228 #ifdef LDAP_DEBUG
 229         if( lm == NULL) {
 230 #ifdef NEW_LOGGING
 231                 LDAP_LOG ( OPERATION, RESULTS, "ldap_chkResponseList returns NULL\n",
 232                         0, 0, 0 );
 233 #else
 234                 Debug( LDAP_DEBUG_TRACE,
 235                         "ldap_chkResponseList returns NULL\n", 0, 0, 0);
 236 #endif
 237         } else {
 238 #ifdef NEW_LOGGING
 239                 LDAP_LOG ( OPERATION, RESULTS,
 240                         "ldap_chkResponseList returns msgid %d, type 0x%02lu\n",
 241                         lm->lm_msgid, (unsigned long) lm->lm_msgtype, 0 );
 242 #else
 243                 Debug( LDAP_DEBUG_TRACE,
 244                         "ldap_chkResponseList returns msgid %d, type 0x%02lu\n",
 245                         lm->lm_msgid, (unsigned long) lm->lm_msgtype, 0);
 246 #endif
 247         }
 248 #endif
 249     return lm;
 250 }
 251
 252 static int
 253 wait4msg(
 254         LDAP *ld,
 255         ber_int_t msgid,
 256         int all,
 257         struct timeval *timeout,
 258         LDAPMessage **result )
 259 {
 260         int             rc;
 261         struct timeval  tv, *tvp;
 262         time_t          start_time = 0;
 263         time_t          tmp_time;
 264         LDAPConn        *lc, *nextlc;
 265
 266         assert( ld != NULL );
 267         assert( result != NULL );
 268
 269 #ifdef LDAP_DEBUG
 270         if ( timeout == NULL ) {
 271 #ifdef NEW_LOGGING
 272                 LDAP_LOG ( OPERATION, ARGS,
 273                         "wait4msg (infinite timeout), msgid %d\n", msgid, 0, 0 );
 274 #else
 275                 Debug( LDAP_DEBUG_TRACE, "wait4msg (infinite timeout), msgid %d\n",
 276                     msgid, 0, 0 );
 277 #endif
 278         } else {
 279 #ifdef NEW_LOGGING
 280                 LDAP_LOG ( OPERATION, ARGS,
 281                         "wait4msg (timeout %ld sec, %ld usec), msgid %d\n",
 282                         (long) timeout->tv_sec, (long) timeout->tv_usec, msgid );
 283 #else
 284                 Debug( LDAP_DEBUG_TRACE, "wait4msg (timeout %ld sec, %ld usec), msgid %d\n",
 285                        (long) timeout->tv_sec, (long) timeout->tv_usec, msgid );
 286 #endif
 287         }
 288 #endif /* LDAP_DEBUG */
 289
 290         if ( timeout == NULL ) {
 291                 tvp = NULL;
 292         } else {
 293                 tv = *timeout;
 294                 tvp = &tv;
 295                 start_time = time( NULL );
 296         }
 297
 298         rc = -2;
 299         while ( rc == -2 ) {
 300 #ifdef LDAP_DEBUG
 301 #ifdef NEW_LOGGING
 302                 LDAP_LOG ( OPERATION, ARGS,
 303                         "wait4msg continue, msgid %d, all %d\n", msgid, all, 0 );
 304 #else
 305                 Debug( LDAP_DEBUG_TRACE, "wait4msg continue, msgid %d, all %d\n",
 306                     msgid, all, 0 );
 307 #endif
 308                 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
 309                         ldap_dump_connection( ld, ld->ld_conns, 1 );
 310                         ldap_dump_requests_and_responses( ld );
 311                 }
 312 #endif /* LDAP_DEBUG */
 313
 314         if( (*result = chkResponseList(ld, msgid, all)) != NULL ) {
 315             rc = (*result)->lm_msgtype;
 316         } else {
 317                         int lc_ready = 0;
 318
 319                         for ( lc = ld->ld_conns; lc != NULL; lc = nextlc ) {
 320                                 nextlc = lc->lconn_next;
 321                                 if ( ber_sockbuf_ctrl( lc->lconn_sb,
 322                                                 LBER_SB_OPT_DATA_READY, NULL ) ) {
 323                                         rc = try_read1msg( ld, msgid, all, lc->lconn_sb,
 324                                                 &lc, result );
 325                                         lc_ready = 1;
 326                                     break;
 327                                 }
 328                 }
 329
 330                     if ( !lc_ready ) {
 331                             rc = ldap_int_select( ld, tvp );
 332 #ifdef LDAP_DEBUG
 333                             if ( rc == -1 ) {
 334 #ifdef NEW_LOGGING
 335                                         LDAP_LOG ( OPERATION, ARGS,
 336                                                 "wait4msg: ldap_int_select returned -1: errno %d\n",
 337                                                 errno, 0, 0 );
 338 #else
 339                                 Debug( LDAP_DEBUG_TRACE,
 340                                         "ldap_int_select returned -1: errno %d\n",
 341                                         errno, 0, 0 );
 342 #endif
 343                             }
 344 #endif
 345
 346                             if ( rc == 0 || ( rc == -1 && (
 347                                     !LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART)
 348                                     || errno != EINTR )))
 349                             {
 350                                     ld->ld_errno = (rc == -1 ? LDAP_SERVER_DOWN :
 351                                         LDAP_TIMEOUT);
 352                                     return rc;
 353                             }
 354
 355                             if ( rc == -1 ) {
 356                                     rc = -2;    /* select interrupted: loop */
 357                             } else {
 358                                     rc = -2;
 359 #ifdef LDAP_R_COMPILE
 360                                     ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 361 #endif
 362                                     if ( ld->ld_requests &&
 363                                                 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
 364                                                 ldap_is_write_ready( ld,
 365                                                         ld->ld_requests->lr_conn->lconn_sb ) ) {
 366                                                 ldap_int_flush_request( ld, ld->ld_requests );
 367                                         }
 368 #ifdef LDAP_R_COMPILE
 369                                     ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 370 #endif
 371                                     for ( lc = ld->ld_conns; rc == -2 && lc != NULL;
 372                                         lc = nextlc ) {
 373                                             nextlc = lc->lconn_next;
 374                                             if ( lc->lconn_status ==
 375                                                 LDAP_CONNST_CONNECTED &&
 376                                                 ldap_is_read_ready( ld,
 377                                                 lc->lconn_sb )) {
 378                                                     rc = try_read1msg( ld, msgid, all,
 379                                                         lc->lconn_sb, &lc, result );
 380                                                         if ( lc == NULL ) lc = nextlc;
 381                                             }
 382                                     }
 383                             }
 384                     }
 385                 }
 386
 387                 if ( rc == -2 && tvp != NULL ) {
 388                         tmp_time = time( NULL );
 389                         if (( tv.tv_sec -=  ( tmp_time - start_time )) <= 0 ) {
 390                                 rc = 0; /* timed out */
 391                                 ld->ld_errno = LDAP_TIMEOUT;
 392                                 break;
 393                         }
 394
 395 #ifdef NEW_LOGGING
 396                         LDAP_LOG ( OPERATION, DETAIL1,
 397                                 "wait4msg: %ld secs to go\n", (long) tv.tv_sec, 0, 0 );
 398 #else
 399                         Debug( LDAP_DEBUG_TRACE, "wait4msg:  %ld secs to go\n",
 400                                (long) tv.tv_sec, 0, 0 );
 401 #endif
 402                         start_time = tmp_time;
 403                 }
 404         }
 405
 406         return( rc );
 407 }
 408
 409
 410 static ber_tag_t
 411 try_read1msg(
 412         LDAP *ld,
 413         ber_int_t msgid,
 414         int all,
 415         Sockbuf *sb,
 416         LDAPConn **lcp,
 417         LDAPMessage **result )
 418 {
 419         BerElement      *ber;
 420         LDAPMessage     *new, *l, *prev, *tmp;
 421         ber_int_t       id;
 422         ber_tag_t       tag;
 423         ber_len_t       len;
 424         int             foundit = 0;
 425         LDAPRequest     *lr, *tmplr;
 426         LDAPConn        *lc;
 427         BerElement      tmpber;
 428         int             rc, refer_cnt, hadref, simple_request;
 429         ber_int_t       lderr;
 430 #ifdef LDAP_CONNECTIONLESS
 431         int             firstmsg = 1, moremsgs = 0, isv2 = 0;
 432 #endif
 433         /*
 434          * v3ref = flag for V3 referral / search reference
 435          * 0 = not a ref, 1 = sucessfully chased ref, -1 = pass ref to application
 436          */
 437         int     v3ref;
 438
 439         assert( ld != NULL );
 440         assert( lcp != NULL );
 441         assert( *lcp != NULL );
 442
 443 #ifdef NEW_LOGGING
 444         LDAP_LOG ( OPERATION, ARGS, "read1msg: msgid %d, all %d\n", msgid, all, 0 );
 445 #else
 446         Debug( LDAP_DEBUG_TRACE, "read1msg: msgid %d, all %d\n", msgid, all, 0 );
 447 #endif
 448
 449         lc = *lcp;
 450
 451 retry:
 452         if ( lc->lconn_ber == NULL ) {
 453                 lc->lconn_ber = ldap_alloc_ber_with_options(ld);
 454
 455                 if( lc->lconn_ber == NULL ) {
 456                         return -1;
 457                 }
 458         }
 459
 460         ber = lc->lconn_ber;
 461         assert( LBER_VALID (ber) );
 462
 463         /* get the next message */
 464         errno = 0;
 465 #ifdef LDAP_CONNECTIONLESS
 466         if ( LDAP_IS_UDP(ld) ) {
 467                 struct sockaddr from;
 468                 ber_int_sb_read(sb, &from, sizeof(struct sockaddr));
 469                 if (ld->ld_options.ldo_version == LDAP_VERSION2) isv2=1;
 470         }
 471 nextresp3:
 472 #endif
 473         tag = ber_get_next( sb, &len, ber );
 474         if ( tag == LDAP_TAG_MESSAGE ) {
 475                 /*
 476                  * We read a complete message.
 477                  * The connection should no longer need this ber.
 478                  */
 479                 lc->lconn_ber = NULL;
 480         }
 481         if ( tag != LDAP_TAG_MESSAGE ) {
 482                 if ( tag == LBER_DEFAULT) {
 483 #ifdef LDAP_DEBUG
 484 #ifdef NEW_LOGGING
 485                         LDAP_LOG ( OPERATION, DETAIL1,
 486                                 "read1msg: ber_get_next failed\n", 0, 0, 0 );
 487 #else
 488                         Debug( LDAP_DEBUG_CONNS,
 489                               "ber_get_next failed.\n", 0, 0, 0 );
 490 #endif
 491 #endif
 492 #ifdef EWOULDBLOCK
 493                         if (errno==EWOULDBLOCK) return -2;
 494 #endif
 495 #ifdef EAGAIN
 496                         if (errno == EAGAIN) return -2;
 497 #endif
 498                         ld->ld_errno = LDAP_SERVER_DOWN;
 499                         return -1;
 500                 }
 501                 ld->ld_errno = LDAP_LOCAL_ERROR;
 502                 return -1;
 503         }
 504
 505         /* message id */
 506         if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
 507                 ber_free( ber, 1 );
 508                 ld->ld_errno = LDAP_DECODING_ERROR;
 509                 return( -1 );
 510         }
 511
 512         /* if it's been abandoned, toss it */
 513         if ( ldap_abandoned( ld, id ) ) {
 514 #ifdef NEW_LOGGING
 515                 LDAP_LOG ( OPERATION, DETAIL1, "read1msg: abandoned\n", 0, 0, 0 );
 516 #else
 517                 Debug( LDAP_DEBUG_ANY, "abandoned\n", 0, 0, 0);
 518 #endif
 519 retry_ber:
 520                 ber_free( ber, 1 );
 521                 if ( ber_sockbuf_ctrl( sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 522                         goto retry;
 523                 }
 524                 return( -2 );   /* continue looking */
 525         }
 526
 527         if (( lr = ldap_find_request_by_msgid( ld, id )) == NULL ) {
 528 #ifdef NEW_LOGGING
 529                 LDAP_LOG ( OPERATION, DETAIL1,
 530                         "read1msg: no request for response with msgid %ld (tossing)\n",
 531                         (long) id, 0, 0 );
 532 #else
 533                 Debug( LDAP_DEBUG_ANY,
 534                     "no request for response with msgid %ld (tossing)\n",
 535                     (long) id, 0, 0 );
 536 #endif
 537                 goto retry_ber;
 538         }
 539 #ifdef LDAP_CONNECTIONLESS
 540         if (LDAP_IS_UDP(ld) && isv2) {
 541                 ber_scanf(ber, "x{");
 542         }
 543 nextresp2:
 544 #endif
 545         /* the message type */
 546         if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
 547                 ld->ld_errno = LDAP_DECODING_ERROR;
 548                 ber_free( ber, 1 );
 549                 return( -1 );
 550         }
 551
 552 #ifdef NEW_LOGGING
 553         LDAP_LOG ( OPERATION, DETAIL1,
 554                 "read1msg: ldap_read: message type %s msgid %ld, original id %ld\n",
 555             ldap_int_msgtype2str( tag ),
 556                 (long) lr->lr_msgid, (long) lr->lr_origid );
 557 #else
 558         Debug( LDAP_DEBUG_TRACE,
 559                 "ldap_read: message type %s msgid %ld, original id %ld\n",
 560             ldap_int_msgtype2str( tag ),
 561                 (long) lr->lr_msgid, (long) lr->lr_origid );
 562 #endif
 563
 564         id = lr->lr_origid;
 565         refer_cnt = 0;
 566         hadref = simple_request = 0;
 567         rc = -2;        /* default is to keep looking (no response found) */
 568         lr->lr_res_msgtype = tag;
 569
 570         /*
 571          * This code figures out if we are going to chase a
 572          * referral / search reference, or pass it back to the application
 573          */
 574         v3ref = 0;      /* Assume not a V3 search reference or referral */
 575         if( (tag != LDAP_RES_SEARCH_ENTRY) && (ld->ld_version > LDAP_VERSION2) ) {
 576                 BerElement      tmpber = *ber;  /* struct copy */
 577                 char **refs = NULL;
 578
 579                 if( tag == LDAP_RES_SEARCH_REFERENCE) {
 580                         /* This is a V3 search reference */
 581                         /* Assume we do not chase the reference, but pass it to application */
 582                         v3ref = -1;
 583                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
 584                                         (lr->lr_parent != NULL) )
 585                         {
 586                                 /* Get the referral list */
 587                                 if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
 588                                         rc = LDAP_DECODING_ERROR;
 589                                 } else {
 590                                         /* Note: refs arrary is freed by ldap_chase_v3referrals */
 591                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 592                                             1, &lr->lr_res_error, &hadref );
 593                                         if ( refer_cnt > 0 ) {  /* sucessfully chased reference */
 594                                                 /* If haven't got end search, set chasing referrals */
 595                                                 if( lr->lr_status != LDAP_REQST_COMPLETED) {
 596                                                         lr->lr_status = LDAP_REQST_CHASINGREFS;
 597 #ifdef NEW_LOGGING
 598                                                         LDAP_LOG ( OPERATION, DETAIL1,
 599                                                                 "read1msg: search ref chased,"
 600                                                                 "mark request chasing refs, id =        %d\n",
 601                                                                 lr->lr_msgid, 0, 0 );
 602 #else
 603                                                         Debug( LDAP_DEBUG_TRACE,
 604                                                             "read1msg:  search ref chased, mark request chasing refs, id = %d\n",
 605                                                             lr->lr_msgid, 0, 0);
 606 #endif
 607                                                 }
 608                                                 v3ref = 1;      /* We sucessfully chased the reference */
 609                                         }
 610                                 }
 611                         }
 612                 } else {
 613                         /* Check for V3 referral */
 614                         ber_len_t len;
 615                         if ( ber_scanf( &tmpber, "{iaa",/*}*/ &lderr,
 616                                     &lr->lr_res_matched, &lr->lr_res_error )
 617                                     != LBER_ERROR ) {
 618                                 /* Check if V3 referral */
 619                                 if( ber_peek_tag( &tmpber, &len) == LDAP_TAG_REFERRAL ) {
 620                                         /* We have a V3 referral, assume we cannot chase it */
 621                                         v3ref = -1;
 622                                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS)
 623                                                          || (lr->lr_parent != NULL) )
 624                                         {
 625                                                 v3ref = -1;  /* Assume referral not chased and return it to app */
 626                                                 /* Get the referral list */
 627                                                 if( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
 628                                                         rc = LDAP_DECODING_ERROR;
 629                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 630 #ifdef NEW_LOGGING
 631                                                         LDAP_LOG ( OPERATION, DETAIL1,
 632                                                                 "read1msg: referral decode error,"
 633                                                                 "mark request completed, id =   %d\n",
 634                                                                 lr->lr_msgid, 0, 0 );
 635 #else
 636                                                         Debug( LDAP_DEBUG_TRACE,
 637                                                             "read1msg: referral decode error, mark request completed, id = %d\n",
 638                                                                     lr->lr_msgid, 0, 0);
 639 #endif
 640                                                 } else {
 641                                                         /* Chase the referral
 642                                                          * Note: refs arrary is freed by ldap_chase_v3referrals
 643                                                          */
 644                                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 645                                                             0, &lr->lr_res_error, &hadref );
 646                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 647 #ifdef NEW_LOGGING
 648                                                         LDAP_LOG ( OPERATION, DETAIL1,
 649                                                                 "read1msg: referral chased,"
 650                                                                 "mark request completed, id =   %d\n",
 651                                                                 lr->lr_msgid, 0, 0 );
 652 #else
 653                                                         Debug( LDAP_DEBUG_TRACE,
 654                                                             "read1msg:  referral chased, mark request completed, id = %d\n",
 655                                                             lr->lr_msgid, 0, 0);
 656 #endif
 657                                                         if( refer_cnt > 0) {
 658                                                                 v3ref = 1;  /* Referral successfully chased */
 659                                                         }
 660                                                 }
 661                                         }
 662                                 }
 663
 664                                 if( lr->lr_res_matched != NULL ) {
 665                                         LDAP_FREE( lr->lr_res_matched );
 666                                         lr->lr_res_matched = NULL;
 667                                 }
 668                                 if( lr->lr_res_error != NULL ) {
 669                                         LDAP_FREE( lr->lr_res_error );
 670                                         lr->lr_res_error = NULL;
 671                                 }
 672                         }
 673                 }
 674         }
 675
 676         /* All results that just return a status, i.e. don't return data
 677          * go through the following code.  This code also chases V2 referrals
 678          * and checks if all referrals have been chased.
 679          */
 680         if ( (tag != LDAP_RES_SEARCH_ENTRY) && (v3ref > -1) &&
 681                 (tag != LDAP_RES_INTERMEDIATE ))
 682         {
 683                 /* For a v3 search referral/reference, only come here if already chased it */
 684                 if ( ld->ld_version >= LDAP_VERSION2 &&
 685                         ( lr->lr_parent != NULL ||
 686                         LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ) )
 687                 {
 688                         tmpber = *ber;  /* struct copy */
 689                         if ( v3ref == 1 ) {
 690                                 /* V3 search reference or V3 referral
 691                                  * sucessfully chased. If this message
 692                                  * is a search result, then it has no more
 693                                  * outstanding referrals.
 694                                  */
 695                                 if ( tag == LDAP_RES_SEARCH_RESULT )
 696                                         refer_cnt = 0;
 697                         } else if ( ber_scanf( &tmpber, "{iaa}", &lderr,
 698                             &lr->lr_res_matched, &lr->lr_res_error )
 699                             != LBER_ERROR ) {
 700                                 if ( lderr != LDAP_SUCCESS ) {
 701                                         /* referrals are in error string */
 702                                         refer_cnt = ldap_chase_referrals( ld, lr,
 703                                                 &lr->lr_res_error, -1, &hadref );
 704                                         lr->lr_status = LDAP_REQST_COMPLETED;
 705 #ifdef NEW_LOGGING
 706                                         LDAP_LOG ( OPERATION, DETAIL1,
 707                                                 "read1msg: V2 referral chased,"
 708                                                 "mark request completed, id =   %d\n",
 709                                                 lr->lr_msgid, 0, 0 );
 710 #else
 711                                         Debug( LDAP_DEBUG_TRACE,
 712                                             "read1msg:  V2 referral chased, mark request completed, id = %d\n", lr->lr_msgid, 0, 0);
 713 #endif
 714                                 }
 715
 716                                 /* save errno, message, and matched string */
 717                                 if ( !hadref || lr->lr_res_error == NULL ) {
 718                                         lr->lr_res_errno = ( lderr ==
 719                                         LDAP_PARTIAL_RESULTS ) ? LDAP_SUCCESS
 720                                         : lderr;
 721                                 } else if ( ld->ld_errno != LDAP_SUCCESS ) {
 722                                         lr->lr_res_errno = ld->ld_errno;
 723                                 } else {
 724                                         lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
 725                                 }
 726 #ifdef NEW_LOGGING
 727 LDAP_LOG ( OPERATION, DETAIL1,
 728         "read1msg: new result: res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 729     lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 730     lr->lr_res_matched ? lr->lr_res_matched : "" );
 731 #else
 732 Debug( LDAP_DEBUG_TRACE,
 733     "new result:  res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 734     lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 735     lr->lr_res_matched ? lr->lr_res_matched : "" );
 736 #endif
 737                         }
 738                 }
 739
 740 #ifdef NEW_LOGGING
 741                 LDAP_LOG ( OPERATION, DETAIL1, "read1msg: %d new referrals\n",
 742                         refer_cnt, 0, 0 );
 743 #else
 744                 Debug( LDAP_DEBUG_TRACE,
 745                     "read1msg:  %d new referrals\n", refer_cnt, 0, 0 );
 746 #endif
 747
 748                 if ( refer_cnt != 0 ) { /* chasing referrals */
 749                         ber_free( ber, 1 );
 750                         ber = NULL;
 751                         if ( refer_cnt < 0 ) {
 752                                 return( -1 );   /* fatal error */
 753                         }
 754                         lr->lr_res_errno = LDAP_SUCCESS; /* sucessfully chased referral */
 755                 } else {
 756                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
 757                                 /* request without any referrals */
 758                                 simple_request = ( hadref ? 0 : 1 );
 759                         } else {
 760                                 /* request with referrals or child request */
 761                                 ber_free( ber, 1 );
 762                                 ber = NULL;
 763                         }
 764
 765                         lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
 766 #ifdef NEW_LOGGING
 767                         LDAP_LOG ( OPERATION, DETAIL1,
 768                                 "read1msg: mark request completed, id = %d\n",
 769                                 lr->lr_msgid, 0, 0 );
 770 #else
 771                         Debug( LDAP_DEBUG_TRACE,
 772                             "read1msg:  mark request completed, id = %d\n", lr->lr_msgid, 0, 0);
 773 #endif
 774                         while ( lr->lr_parent != NULL ) {
 775                                 merge_error_info( ld, lr->lr_parent, lr );
 776
 777                                 lr = lr->lr_parent;
 778                                 if ( --lr->lr_outrefcnt > 0 ) {
 779                                         break;  /* not completely done yet */
 780                                 }
 781                         }
 782
 783                         /* Check if all requests are finished, lr is now parent */
 784                         tmplr = lr;
 785                         if (tmplr->lr_status == LDAP_REQST_COMPLETED) {
 786                                 for(tmplr=lr->lr_child; tmplr != NULL; tmplr=tmplr->lr_refnext) {
 787                                 if( tmplr->lr_status != LDAP_REQST_COMPLETED) {
 788                                         break;
 789                                         }
 790                                 }
 791                         }
 792
 793                         /* This is the parent request if the request has referrals */
 794                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL && tmplr == NULL ) {
 795                                 id = lr->lr_msgid;
 796                                 tag = lr->lr_res_msgtype;
 797 #ifdef NEW_LOGGING
 798                         LDAP_LOG ( OPERATION, DETAIL1,
 799                                 "read1msg: request %ld done\n", (long) id, 0, 0 );
 800                         LDAP_LOG ( OPERATION, DETAIL1,
 801                                 "read1msg: res_errno: %d,res_error: <%s>, res_matched: <%s>\n",
 802                                 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 803                                 lr->lr_res_matched ? lr->lr_res_matched : "" );
 804 #else
 805                                 Debug( LDAP_DEBUG_ANY, "request %ld done\n",
 806                                     (long) id, 0, 0 );
 807 Debug( LDAP_DEBUG_TRACE,
 808 "res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 809 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 810 lr->lr_res_matched ? lr->lr_res_matched : "" );
 811 #endif
 812                                 if ( !simple_request ) {
 813                                         ber_free( ber, 1 );
 814                                         ber = NULL;
 815                                         if ( build_result_ber( ld, &ber, lr )
 816                                             == LBER_ERROR ) {
 817                                                 rc = -1; /* fatal error */
 818                                         }
 819                                 }
 820
 821                                 ldap_free_request( ld, lr );
 822                         }
 823
 824                         if ( lc != NULL ) {
 825                                 ldap_free_connection( ld, lc, 0, 1 );
 826                                 *lcp = NULL;
 827                         }
 828                 }
 829         }
 830
 831         if ( ber == NULL ) {
 832                 return( rc );
 833         }
 834
 835         /* make a new ldap message */
 836         if ( (new = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) ))
 837             == NULL ) {
 838                 ld->ld_errno = LDAP_NO_MEMORY;
 839                 return( -1 );
 840         }
 841         new->lm_msgid = (int)id;
 842         new->lm_msgtype = tag;
 843         new->lm_ber = ber;
 844
 845 #ifdef LDAP_CONNECTIONLESS
 846         /* CLDAP replies all fit in a single datagram. In LDAPv2 RFC1798
 847          * the responses are all a sequence wrapped in one message. In
 848          * LDAPv3 each response is in its own message. The datagram must
 849          * end with a SearchResult. We can't just parse each response in
 850          * separate calls to try_read1msg because the header info is only
 851          * present at the beginning of the datagram, not at the beginning
 852          * of each response. So parse all the responses at once and queue
 853          * them up, then pull off the first response to return to the
 854          * caller when all parsing is complete.
 855          */
 856         if ( LDAP_IS_UDP(ld) ) {
 857                 /* If not a result, look for more */
 858                 if ( tag != LDAP_RES_SEARCH_RESULT ) {
 859                         int ok = 0;
 860                         moremsgs = 1;
 861                         if (isv2) {
 862                                 /* LDAPv2: dup the current ber, skip past the current
 863                                  * response, and see if there are any more after it.
 864                                  */
 865                                 ber = ber_dup( ber );
 866                                 ber_scanf( ber, "x" );
 867                                 if (ber_peek_tag(ber, &len) != LBER_DEFAULT) {
 868                                         /* There's more - dup the ber buffer so they can all be
 869                                          * individually freed by ldap_msgfree.
 870                                          */
 871                                         struct berval bv;
 872                                         ber_get_option(ber, LBER_OPT_BER_REMAINING_BYTES, &len);
 873                                         bv.bv_val = LDAP_MALLOC(len);
 874                                         if (bv.bv_val) {
 875                                                 ok=1;
 876                                                 ber_read(ber, bv.bv_val, len);
 877                                                 bv.bv_len = len;
 878                                                 ber_init2(ber, &bv, ld->ld_lberoptions );
 879                                         }
 880                                 }
 881                         } else {
 882                                 /* LDAPv3: Just allocate a new ber. Since this is a buffered
 883                                  * datagram, if the sockbuf is readable we still have data
 884                                  * to parse.
 885                                  */
 886                                 ber = ldap_alloc_ber_with_options(ld);
 887                                 if (ber_sockbuf_ctrl(sb, LBER_SB_OPT_DATA_READY, NULL)) ok=1;
 888                         }
 889                         /* set up response chain */
 890                         if ( firstmsg ) {
 891                                 firstmsg = 0;
 892                                 new->lm_next = ld->ld_responses;
 893                                 ld->ld_responses = new;
 894                         } else {
 895                                 tmp->lm_chain = new;
 896                         }
 897                         tmp = new;
 898                         /* "ok" means there's more to parse */
 899                         if (ok) {
 900                                 if (isv2) goto nextresp2;
 901                                 else goto nextresp3;
 902                         } else {
 903                                 /* got to end of datagram without a SearchResult. Free
 904                                  * our dup'd ber, but leave any buffer alone. For v2 case,
 905                                  * the previous response is still using this buffer. For v3,
 906                                  * the new ber has no buffer to free yet.
 907                                  */
 908                                 ber_free(ber, 0);
 909                                 return -1;
 910                         }
 911                 } else if ( moremsgs ) {
 912                 /* got search result, and we had multiple responses in 1 datagram.
 913                  * stick the result onto the end of the chain, and then pull the
 914                  * first response off the head of the chain.
 915                  */
 916                         tmp->lm_chain = new;
 917                         *result = chkResponseList( ld, msgid, all );
 918                         ld->ld_errno = LDAP_SUCCESS;
 919                         return( (*result)->lm_msgtype );
 920                 }
 921         }
 922 #endif
 923
 924         /* is this the one we're looking for? */
 925         if ( msgid == LDAP_RES_ANY || id == msgid ) {
 926                 if ( all == LDAP_MSG_ONE
 927                     || (new->lm_msgtype != LDAP_RES_SEARCH_RESULT
 928                     && new->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 929                     && new->lm_msgtype != LDAP_RES_SEARCH_REFERENCE) ) {
 930                         *result = new;
 931                         ld->ld_errno = LDAP_SUCCESS;
 932                         return( tag );
 933                 } else if ( new->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
 934                         foundit = 1;    /* return the chain later */
 935                 }
 936         }
 937
 938         /*
 939          * if not, we must add it to the list of responses.  if
 940          * the msgid is already there, it must be part of an existing
 941          * search response.
 942          */
 943
 944         prev = NULL;
 945         for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
 946                 if ( l->lm_msgid == new->lm_msgid )
 947                         break;
 948                 prev = l;
 949         }
 950
 951         /* not part of an existing search response */
 952         if ( l == NULL ) {
 953                 if ( foundit ) {
 954                         *result = new;
 955                         goto exit;
 956                 }
 957
 958                 new->lm_next = ld->ld_responses;
 959                 ld->ld_responses = new;
 960                 goto exit;
 961         }
 962
 963 #ifdef NEW_LOGGING
 964         LDAP_LOG ( OPERATION, DETAIL1,
 965                 "read1msg: adding response id %ld type %ld\n",
 966                 (long) new->lm_msgid, (long) new->lm_msgtype, 0 );
 967 #else
 968         Debug( LDAP_DEBUG_TRACE, "adding response id %ld type %ld:\n",
 969             (long) new->lm_msgid, (long) new->lm_msgtype, 0 );
 970 #endif
 971
 972         /* part of a search response - add to end of list of entries */
 973         for ( tmp = l; (tmp->lm_chain != NULL) &&
 974                 ((tmp->lm_chain->lm_msgtype == LDAP_RES_SEARCH_ENTRY) ||
 975                  (tmp->lm_chain->lm_msgtype == LDAP_RES_SEARCH_REFERENCE) ||
 976                          (tmp->lm_chain->lm_msgtype == LDAP_RES_INTERMEDIATE ));
 977             tmp = tmp->lm_chain )
 978                 ;       /* NULL */
 979         tmp->lm_chain = new;
 980
 981         /* return the whole chain if that's what we were looking for */
 982         if ( foundit ) {
 983                 if ( prev == NULL )
 984                         ld->ld_responses = l->lm_next;
 985                 else
 986                         prev->lm_next = l->lm_next;
 987                 *result = l;
 988         }
 989
 990 exit:
 991         if ( foundit ) {
 992                 ld->ld_errno = LDAP_SUCCESS;
 993                 return( tag );
 994         }
 995         if ( ber_sockbuf_ctrl( sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 996                 goto retry;
 997         }
 998         return( -2 );   /* continue looking */
 999 }
1000
1001
1002 static ber_tag_t
1003 build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
1004 {
1005         ber_len_t       len;
1006         ber_tag_t       tag;
1007         ber_int_t       along;
1008         BerElement *ber;
1009
1010         *bp = NULL;
1011         ber = ldap_alloc_ber_with_options( ld );
1012
1013         if( ber == NULL ) {
1014                 ld->ld_errno = LDAP_NO_MEMORY;
1015                 return LBER_ERROR;
1016         }
1017
1018         if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
1019             lr->lr_res_msgtype, lr->lr_res_errno,
1020             lr->lr_res_matched ? lr->lr_res_matched : "",
1021             lr->lr_res_error ? lr->lr_res_error : "" ) == -1 ) {
1022
1023                 ld->ld_errno = LDAP_ENCODING_ERROR;
1024                 ber_free(ber, 1);
1025                 return( LBER_ERROR );
1026         }
1027
1028         ber_reset( ber, 1 );
1029
1030         if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
1031                 ld->ld_errno = LDAP_DECODING_ERROR;
1032                 ber_free(ber, 1);
1033                 return( LBER_ERROR );
1034         }
1035
1036         if ( ber_get_int( ber, &along ) == LBER_ERROR ) {
1037                 ld->ld_errno = LDAP_DECODING_ERROR;
1038                 ber_free(ber, 1);
1039                 return( LBER_ERROR );
1040         }
1041
1042         tag = ber_peek_tag( ber, &len );
1043
1044         if ( tag == LBER_ERROR ) {
1045                 ld->ld_errno = LDAP_DECODING_ERROR;
1046                 ber_free(ber, 1);
1047                 return( LBER_ERROR );
1048         }
1049
1050         *bp = ber;
1051         return tag;
1052 }
1053
1054
1055 static void
1056 merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
1057 {
1058 /*
1059  * Merge error information in "lr" with "parentr" error code and string.
1060  */
1061         if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
1062                 parentr->lr_res_errno = lr->lr_res_errno;
1063                 if ( lr->lr_res_error != NULL ) {
1064                         (void)ldap_append_referral( ld, &parentr->lr_res_error,
1065                             lr->lr_res_error );
1066                 }
1067         } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
1068             parentr->lr_res_errno == LDAP_SUCCESS ) {
1069                 parentr->lr_res_errno = lr->lr_res_errno;
1070                 if ( parentr->lr_res_error != NULL ) {
1071                         LDAP_FREE( parentr->lr_res_error );
1072                 }
1073                 parentr->lr_res_error = lr->lr_res_error;
1074                 lr->lr_res_error = NULL;
1075                 if ( LDAP_NAME_ERROR( lr->lr_res_errno )) {
1076                         if ( parentr->lr_res_matched != NULL ) {
1077                                 LDAP_FREE( parentr->lr_res_matched );
1078                         }
1079                         parentr->lr_res_matched = lr->lr_res_matched;
1080                         lr->lr_res_matched = NULL;
1081                 }
1082         }
1083
1084 #ifdef NEW_LOGGING
1085         LDAP_LOG( OPERATION, DETAIL1, "merged parent (id %d) error info:  ",
1086             parentr->lr_msgid, 0, 0 );
1087         LDAP_LOG( OPERATION, DETAIL1, "result errno %d, error <%s>, matched <%s>\n",
1088             parentr->lr_res_errno, parentr->lr_res_error ?
1089             parentr->lr_res_error : "", parentr->lr_res_matched ?
1090             parentr->lr_res_matched : "" );
1091 #else
1092         Debug( LDAP_DEBUG_TRACE, "merged parent (id %d) error info:  ",
1093             parentr->lr_msgid, 0, 0 );
1094         Debug( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
1095             parentr->lr_res_errno, parentr->lr_res_error ?
1096             parentr->lr_res_error : "", parentr->lr_res_matched ?
1097             parentr->lr_res_matched : "" );
1098 #endif
1099 }
1100
1101
1102
1103 int
1104 ldap_msgtype( LDAPMessage *lm )
1105 {
1106         assert( lm != NULL );
1107         return ( lm != NULL ) ? lm->lm_msgtype : -1;
1108 }
1109
1110
1111 int
1112 ldap_msgid( LDAPMessage *lm )
1113 {
1114         assert( lm != NULL );
1115
1116         return ( lm != NULL ) ? lm->lm_msgid : -1;
1117 }
1118
1119
1120 char * ldap_int_msgtype2str( ber_tag_t tag )
1121 {
1122         switch( tag ) {
1123         case LDAP_RES_ADD: return "add";
1124         case LDAP_RES_BIND: return "bind";
1125         case LDAP_RES_COMPARE: return "compare";
1126         case LDAP_RES_DELETE: return "delete";
1127         case LDAP_RES_EXTENDED: return "extended-result";
1128         case LDAP_RES_INTERMEDIATE: return "intermediate";
1129         case LDAP_RES_MODIFY: return "modify";
1130         case LDAP_RES_RENAME: return "rename";
1131         case LDAP_RES_SEARCH_ENTRY: return "search-entry";
1132         case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
1133         case LDAP_RES_SEARCH_RESULT: return "search-result";
1134         }
1135         return "unknown";
1136 }
1137
1138 int
1139 ldap_msgfree( LDAPMessage *lm )
1140 {
1141         LDAPMessage     *next;
1142         int             type = 0;
1143
1144 #ifdef NEW_LOGGING
1145         LDAP_LOG ( OPERATION, ENTRY, "ldap_msgfree\n", 0, 0, 0 );
1146 #else
1147         Debug( LDAP_DEBUG_TRACE, "ldap_msgfree\n", 0, 0, 0 );
1148 #endif
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 #ifdef NEW_LOGGING
1174         LDAP_LOG ( OPERATION, ENTRY, "ldap_msgdelete\n", 0, 0, 0 );
1175 #else
1176         Debug( LDAP_DEBUG_TRACE, "ldap_msgdelete\n", 0, 0, 0 );
1177 #endif
1178
1179         prev = NULL;
1180 #ifdef LDAP_R_COMPILE
1181         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
1182 #endif
1183         for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
1184                 if ( lm->lm_msgid == msgid )
1185                         break;
1186                 prev = lm;
1187         }
1188
1189         if ( lm == NULL ) {
1190                 rc = -1;
1191         } else {
1192                 if ( prev == NULL )
1193                         ld->ld_responses = lm->lm_next;
1194                 else
1195                         prev->lm_next = lm->lm_next;
1196         }
1197 #ifdef LDAP_R_COMPILE
1198         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
1199 #endif
1200         if ( lm && ldap_msgfree( lm ) == LDAP_RES_SEARCH_ENTRY )
1201                 rc = -1;
1202
1203         return( rc );
1204 }
1205
1206
1207 /*
1208  * return 1 if message msgid is waiting to be abandoned, 0 otherwise
1209  */
1210 static int
1211 ldap_abandoned( LDAP *ld, ber_int_t msgid )
1212 {
1213         int     i;
1214
1215         if ( ld->ld_abandoned == NULL )
1216                 return( 0 );
1217
1218         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1219                 if ( ld->ld_abandoned[i] == msgid )
1220                         return( 1 );
1221
1222         return( 0 );
1223 }
1224
1225
1226 static int
1227 ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
1228 {
1229         int     i;
1230
1231         if ( ld->ld_abandoned == NULL )
1232                 return( -1 );
1233
1234         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1235                 if ( ld->ld_abandoned[i] == msgid )
1236                         break;
1237
1238         if ( ld->ld_abandoned[i] == -1 )
1239                 return( -1 );
1240
1241         for ( ; ld->ld_abandoned[i] != -1; i++ ) {
1242                 ld->ld_abandoned[i] = ld->ld_abandoned[i + 1];
1243         }
1244
1245         return( 0 );
1246 }