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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6 /*  Portions
   7  *  Copyright (c) 1990 Regents of the University of Michigan.
   8  *  All rights reserved.
   9  */
  10 /*---
  11  * This notice applies to changes, created by or for Novell, Inc.,
  12  * to preexisting works for which notices appear elsewhere in this file.
  13  *
  14  * Copyright (C) 1999, 2000 Novell, Inc. All Rights Reserved.
  15  *
  16  * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND TREATIES.
  17  * USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT TO VERSION
  18  * 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS AVAILABLE AT
  19  * HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE" IN THE
  20  * TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION OF THIS
  21  * WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP PUBLIC
  22  * LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT THE
  23  * PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
  24  *---
  25  * Modification to OpenLDAP source by Novell, Inc.
  26  * April 2000 sfs Add code to process V3 referrals and search results
  27  *
  28  *  result.c - wait for an ldap result
  29  */
  30
  31 /*
  32  * LDAPv3 (RFC2251)
  33  *      LDAPResult ::= SEQUENCE {
  34  *              resultCode              ENUMERATED { ... },
  35  *              matchedDN               LDAPDN,
  36  *              errorMessage    LDAPString,
  37  *              referral                Referral OPTIONAL
  38  *      }
  39  *      Referral ::= SEQUENCE OF LDAPURL        (one or more)
  40  *      LDAPURL ::= LDAPString                          (limited to URL chars)
  41  */
  42
  43 #include "portable.h"
  44
  45 #include <stdio.h>
  46
  47 #include <ac/stdlib.h>
  48
  49 #include <ac/errno.h>
  50 #include <ac/socket.h>
  51 #include <ac/string.h>
  52 #include <ac/time.h>
  53 #include <ac/unistd.h>
  54
  55 #include "ldap-int.h"
  56
  57
  58 static int ldap_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
  59 static int ldap_mark_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
  60 static int wait4msg LDAP_P(( LDAP *ld, ber_int_t msgid, int all, struct timeval *timeout,
  61         LDAPMessage **result ));
  62 static ber_tag_t try_read1msg LDAP_P(( LDAP *ld, ber_int_t msgid,
  63         int all, Sockbuf *sb, LDAPConn *lc, LDAPMessage **result ));
  64 static ber_tag_t build_result_ber LDAP_P(( LDAP *ld, BerElement **bp, LDAPRequest *lr ));
  65 static void merge_error_info LDAP_P(( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr ));
  66 static LDAPMessage * chkResponseList LDAP_P(( LDAP *ld, int msgid, int all));
  67
  68
  69 /*
  70  * ldap_result - wait for an ldap result response to a message from the
  71  * ldap server.  If msgid is LDAP_RES_ANY (-1), any message will be
  72  * accepted.  If msgid is LDAP_RES_UNSOLICITED (0), any unsolicited
  73  * message is accepted.  Otherwise ldap_result will wait for a response
  74  * with msgid.  If all is LDAP_MSG_ONE (0) the first message with id
  75  * msgid will be accepted, otherwise, ldap_result will wait for all
  76  * responses with id msgid and then return a pointer to the entire list
  77  * of messages.  In general, this is only useful for search responses,
  78  * which can be of three message types (zero or more entries, zero or
  79  * search references, followed by an ldap result).  An extension to
  80  * LDAPv3 allows partial extended responses to be returned in response
  81  * to any request.  The type of the first message received is returned.
  82  * When waiting, any messages that have been abandoned are discarded.
  83  *
  84  * Example:
  85  *      ldap_result( s, msgid, all, timeout, result )
  86  */
  87 int
  88 ldap_result(
  89         LDAP *ld,
  90         int msgid,
  91         int all,
  92         struct timeval *timeout,
  93         LDAPMessage **result )
  94 {
  95         LDAPMessage     *lm;
  96
  97         assert( ld != NULL );
  98         assert( result != NULL );
  99
 100 #ifdef NEW_LOGGING
 101         LDAP_LOG (( "result", LDAP_LEVEL_ARGS, "ldap_result msgid %d\n", msgid ));
 102 #else
 103         Debug( LDAP_DEBUG_TRACE, "ldap_result msgid %d\n", msgid, 0, 0 );
 104 #endif
 105
 106         if( ld == NULL ) {
 107                 return -1;
 108         }
 109
 110         if( result == NULL ) {
 111                 ld->ld_errno = LDAP_PARAM_ERROR;
 112                 return -1;
 113         }
 114
 115     lm = chkResponseList(ld, msgid, all);
 116
 117         if ( lm == NULL ) {
 118                 return( wait4msg( ld, msgid, all, timeout, result ) );
 119         }
 120
 121         *result = lm;
 122         ld->ld_errno = LDAP_SUCCESS;
 123         return( lm->lm_msgtype );
 124 }
 125
 126 static LDAPMessage *
 127 chkResponseList(
 128         LDAP *ld,
 129         int msgid,
 130         int all)
 131 {
 132         LDAPMessage     *lm, *lastlm, *nextlm;
 133     /*
 134          * Look through the list of responses we have received on
 135          * this association and see if the response we're interested in
 136          * is there.  If it is, return it.  If not, call wait4msg() to
 137          * wait until it arrives or timeout occurs.
 138          */
 139
 140 #ifdef NEW_LOGGING
 141         LDAP_LOG (( "result", LDAP_LEVEL_ARGS,
 142                 "ldap_chkResponseList for msgid=%d, all=%d\n", msgid, all ));
 143 #else
 144         Debug( LDAP_DEBUG_TRACE,
 145                 "ldap_chkResponseList for msgid=%d, all=%d\n",
 146             msgid, all, 0 );
 147 #endif
 148         lastlm = NULL;
 149         for ( lm = ld->ld_responses; lm != NULL; lm = nextlm ) {
 150                 nextlm = lm->lm_next;
 151
 152                 if ( ldap_abandoned( ld, lm->lm_msgid ) ) {
 153 #ifdef NEW_LOGGING
 154                         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 155                                 "ldap_chkResponseList msg abandoned, msgid %d\n", msgid ));
 156 #else
 157                         Debug( LDAP_DEBUG_TRACE,
 158                                 "ldap_chkResponseList msg abandoned, msgid %d\n",
 159                             msgid, 0, 0 );
 160 #endif
 161                         ldap_mark_abandoned( ld, lm->lm_msgid );
 162
 163                         if ( lastlm == NULL ) {
 164                                 /* Remove first entry in list */
 165                                 ld->ld_responses = lm->lm_next;
 166                         } else {
 167                                 lastlm->lm_next = nextlm;
 168                         }
 169
 170                         ldap_msgfree( lm );
 171
 172                         continue;
 173                 }
 174
 175                 if ( msgid == LDAP_RES_ANY || lm->lm_msgid == msgid ) {
 176                         LDAPMessage     *tmp;
 177
 178                         if ( all == LDAP_MSG_ONE || msgid == LDAP_RES_UNSOLICITED ) {
 179                                 break;
 180                         }
 181
 182                         for ( tmp = lm; tmp != NULL; tmp = tmp->lm_chain ) {
 183                                 if ( tmp->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 184                                     && tmp->lm_msgtype != LDAP_RES_SEARCH_REFERENCE
 185                                         && tmp->lm_msgtype != LDAP_RES_EXTENDED_PARTIAL )
 186                                 {
 187                                         break;
 188                                 }
 189                         }
 190
 191                         if ( tmp == NULL ) {
 192                                 lm = NULL;
 193                         }
 194
 195                         break;
 196                 }
 197                 lastlm = lm;
 198         }
 199
 200     if ( lm != NULL ) {
 201                 /* Found an entry, remove it from the list */
 202             if ( lastlm == NULL ) {
 203                     ld->ld_responses = (all == LDAP_MSG_ONE && lm->lm_chain != NULL
 204                         ? lm->lm_chain : lm->lm_next);
 205             } else {
 206                     lastlm->lm_next = (all == LDAP_MSG_ONE && lm->lm_chain != NULL
 207                         ? lm->lm_chain : lm->lm_next);
 208             }
 209             if ( all == LDAP_MSG_ONE && lm->lm_chain != NULL ) {
 210                     lm->lm_chain->lm_next = lm->lm_next;
 211                     lm->lm_chain = NULL;
 212             }
 213             lm->lm_next = NULL;
 214     }
 215
 216 #ifdef LDAP_DEBUG
 217         if( lm == NULL) {
 218 #ifdef NEW_LOGGING
 219                 LDAP_LOG (( "result", LDAP_LEVEL_RESULTS,
 220                         "ldap_chkResponseList returns NULL\n" ));
 221 #else
 222                 Debug( LDAP_DEBUG_TRACE,
 223                         "ldap_chkResponseList returns NULL\n", 0, 0, 0);
 224 #endif
 225         } else {
 226 #ifdef NEW_LOGGING
 227                 LDAP_LOG (( "result", LDAP_LEVEL_RESULTS,
 228                         "ldap_chkResponseList returns msgid %d, type 0x02lu\n",
 229                         lm->lm_msgid, (unsigned long) lm->lm_msgtype ));
 230 #else
 231                 Debug( LDAP_DEBUG_TRACE,
 232                         "ldap_chkResponseList returns msgid %d, type 0x%02lu\n",
 233                         lm->lm_msgid, (unsigned long) lm->lm_msgtype, 0);
 234 #endif
 235         }
 236 #endif
 237     return lm;
 238 }
 239
 240 static int
 241 wait4msg(
 242         LDAP *ld,
 243         ber_int_t msgid,
 244         int all,
 245         struct timeval *timeout,
 246         LDAPMessage **result )
 247 {
 248         int             rc;
 249         struct timeval  tv, *tvp;
 250         time_t          start_time = 0;
 251         time_t          tmp_time;
 252         LDAPConn        *lc, *nextlc;
 253
 254         assert( ld != NULL );
 255         assert( result != NULL );
 256
 257 #ifdef LDAP_DEBUG
 258         if ( timeout == NULL ) {
 259 #ifdef NEW_LOGGING
 260                 LDAP_LOG (( "result", LDAP_LEVEL_ARGS,
 261                         "wait4msg (infinite timeout), msgid %d\n", msgid ));
 262 #else
 263                 Debug( LDAP_DEBUG_TRACE, "wait4msg (infinite timeout), msgid %d\n",
 264                     msgid, 0, 0 );
 265 #endif
 266         } else {
 267 #ifdef NEW_LOGGING
 268                 LDAP_LOG (( "result", LDAP_LEVEL_ARGS,
 269                         "wait4msg (timeout %ld sec, %ld usec), msgid %d\n",
 270                         (long) timeout->tv_sec, (long) timeout->tv_usec, msgid ));
 271 #else
 272                 Debug( LDAP_DEBUG_TRACE, "wait4msg (timeout %ld sec, %ld usec), msgid %d\n",
 273                        (long) timeout->tv_sec, (long) timeout->tv_usec, msgid );
 274 #endif
 275         }
 276 #endif /* LDAP_DEBUG */
 277
 278         if ( timeout == NULL ) {
 279                 tvp = NULL;
 280         } else {
 281                 tv = *timeout;
 282                 tvp = &tv;
 283                 start_time = time( NULL );
 284         }
 285
 286         rc = -2;
 287         while ( rc == -2 ) {
 288 #ifdef LDAP_DEBUG
 289 #ifdef NEW_LOGGING
 290                 LDAP_LOG (( "result", LDAP_LEVEL_ARGS,
 291                         "wait4msg continue, msgid %d, all %d\n", msgid, all ));
 292 #else
 293                 Debug( LDAP_DEBUG_TRACE, "wait4msg continue, msgid %d, all %d\n",
 294                     msgid, all, 0 );
 295 #endif
 296                 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
 297                         ldap_dump_connection( ld, ld->ld_conns, 1 );
 298                         ldap_dump_requests_and_responses( ld );
 299                 }
 300 #endif /* LDAP_DEBUG */
 301
 302         if( (*result = chkResponseList(ld, msgid, all)) != NULL ) {
 303             rc = (*result)->lm_msgtype;
 304         } else {
 305
 306                         for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
 307                                 if ( ber_sockbuf_ctrl( lc->lconn_sb,
 308                                                 LBER_SB_OPT_DATA_READY, NULL ) ) {
 309                                             rc = try_read1msg( ld, msgid, all, lc->lconn_sb,
 310                                                 lc, result );
 311                                     break;
 312                                 }
 313                 }
 314
 315                     if ( lc == NULL ) {
 316                             rc = ldap_int_select( ld, tvp );
 317
 318
 319 #ifdef LDAP_DEBUG
 320                             if ( rc == -1 ) {
 321 #ifdef NEW_LOGGING
 322                                         LDAP_LOG (( "result", LDAP_LEVEL_ARGS,
 323                                                 "wait4msg: ldap_int_select returned -1: errno %d\n",
 324                                                 errno ));
 325 #else
 326                                 Debug( LDAP_DEBUG_TRACE,
 327                                         "ldap_int_select returned -1: errno %d\n",
 328                                         errno, 0, 0 );
 329 #endif
 330                             }
 331 #endif
 332
 333                             if ( rc == 0 || ( rc == -1 && (
 334                                     !LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART)
 335                                     || errno != EINTR )))
 336                             {
 337                                     ld->ld_errno = (rc == -1 ? LDAP_SERVER_DOWN :
 338                                         LDAP_TIMEOUT);
 339                                     return( rc );
 340                             }
 341
 342                             if ( rc == -1 ) {
 343                                     rc = -2;    /* select interrupted: loop */
 344                             } else {
 345                                     rc = -2;
 346                                     for ( lc = ld->ld_conns; rc == -2 && lc != NULL;
 347                                         lc = nextlc ) {
 348                                             nextlc = lc->lconn_next;
 349                                             if ( lc->lconn_status ==
 350                                                 LDAP_CONNST_CONNECTED &&
 351                                                 ldap_is_read_ready( ld,
 352                                                 lc->lconn_sb )) {
 353                                                     rc = try_read1msg( ld, msgid, all,
 354                                                         lc->lconn_sb, lc, result );
 355                                             }
 356                                     }
 357                             }
 358                     }
 359                 }
 360
 361                 if ( rc == -2 && tvp != NULL ) {
 362                         tmp_time = time( NULL );
 363                         if (( tv.tv_sec -=  ( tmp_time - start_time )) <= 0 ) {
 364                                 rc = 0; /* timed out */
 365                                 ld->ld_errno = LDAP_TIMEOUT;
 366                                 break;
 367                         }
 368
 369 #ifdef NEW_LOGGING
 370                         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 371                                 "wait4msg: %ld secs to go\n", (long) tv.tv_sec ));
 372 #else
 373                         Debug( LDAP_DEBUG_TRACE, "wait4msg:  %ld secs to go\n",
 374                                (long) tv.tv_sec, 0, 0 );
 375 #endif
 376                         start_time = tmp_time;
 377                 }
 378         }
 379
 380         return( rc );
 381 }
 382
 383
 384 static ber_tag_t
 385 try_read1msg(
 386         LDAP *ld,
 387         ber_int_t msgid,
 388         int all,
 389         Sockbuf *sb,
 390         LDAPConn *lc,
 391         LDAPMessage **result )
 392 {
 393         BerElement      *ber;
 394         LDAPMessage     *new, *l, *prev, *tmp;
 395         ber_int_t       id;
 396         ber_tag_t       tag;
 397         ber_len_t       len;
 398         int             foundit = 0;
 399         LDAPRequest     *lr, *tmplr;
 400         BerElement      tmpber;
 401         int             rc, refer_cnt, hadref, simple_request;
 402         ber_int_t       lderr;
 403         /*
 404          * v3ref = flag for V3 referral / search reference
 405          * 0 = not a ref, 1 = sucessfully chased ref, -1 = pass ref to application
 406          */
 407         int     v3ref;
 408
 409         assert( ld != NULL );
 410         assert( lc != NULL );
 411
 412 #ifdef NEW_LOGGING
 413         LDAP_LOG (( "result", LDAP_LEVEL_ARGS, "read1msg: msgid %d, all %d\n",
 414                 msgid, all ));
 415 #else
 416         Debug( LDAP_DEBUG_TRACE, "read1msg: msgid %d, all %d\n", msgid, all, 0 );
 417 #endif
 418
 419     if ( lc->lconn_ber == NULL ) {
 420                 lc->lconn_ber = ldap_alloc_ber_with_options(ld);
 421
 422                 if( lc->lconn_ber == NULL ) {
 423                         return -1;
 424                 }
 425     }
 426
 427         ber = lc->lconn_ber;
 428         assert( LBER_VALID (ber) );
 429
 430         /* get the next message */
 431         errno = 0;
 432 #ifdef LDAP_CONNECTIONLESS
 433         if ( LDAP_IS_UDP(ld) ) {
 434                 struct sockaddr from;
 435                 ber_int_sb_read(sb, &from, sizeof(struct sockaddr));
 436         }
 437 #endif
 438         if ( (tag = ber_get_next( sb, &len, ber ))
 439             != LDAP_TAG_MESSAGE ) {
 440                 if ( tag == LBER_DEFAULT) {
 441 #ifdef LDAP_DEBUG
 442 #ifdef NEW_LOGGING
 443                         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 444                                 "read1msg: ber_get_next failed\n" ));
 445 #else
 446                         Debug( LDAP_DEBUG_CONNS,
 447                               "ber_get_next failed.\n", 0, 0, 0 );
 448 #endif
 449 #endif
 450 #ifdef EWOULDBLOCK
 451                         if (errno==EWOULDBLOCK) return -2;
 452 #endif
 453 #ifdef EAGAIN
 454                         if (errno == EAGAIN) return -2;
 455 #endif
 456                         ld->ld_errno = LDAP_SERVER_DOWN;
 457                         return -1;
 458                 }
 459                 ld->ld_errno = LDAP_LOCAL_ERROR;
 460                 return -1;
 461         }
 462
 463         /*
 464      * We read a complete message.
 465          * The connection should no longer need this ber.
 466          */
 467     lc->lconn_ber = NULL;
 468
 469         /* message id */
 470         if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
 471                 ber_free( ber, 1 );
 472                 ld->ld_errno = LDAP_DECODING_ERROR;
 473                 return( -1 );
 474         }
 475
 476         /* if it's been abandoned, toss it */
 477         if ( ldap_abandoned( ld, id ) ) {
 478                 ber_free( ber, 1 );
 479 #ifdef NEW_LOGGING
 480                 LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 481                         "read1msg: abandoned\n" ));
 482 #else
 483                 Debug( LDAP_DEBUG_ANY, "abandoned\n", 0, 0, 0);
 484 #endif
 485                 return( -2 );   /* continue looking */
 486         }
 487
 488         if (( lr = ldap_find_request_by_msgid( ld, id )) == NULL ) {
 489 #ifdef NEW_LOGGING
 490                 LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 491                         "read1msg: no request for response with msgid %ld (tossing)\n",
 492                         (long) id ));
 493 #else
 494                 Debug( LDAP_DEBUG_ANY,
 495                     "no request for response with msgid %ld (tossing)\n",
 496                     (long) id, 0, 0 );
 497 #endif
 498                 ber_free( ber, 1 );
 499                 return( -2 );   /* continue looking */
 500         }
 501 #ifdef LDAP_CONNECTIONLESS
 502         if (LDAP_IS_UDP(ld) && ld->ld_options.ldo_version == LDAP_VERSION2) {
 503                 struct berval blank;
 504                 ber_scanf(ber, "m{", &blank);
 505         }
 506 #endif
 507         /* the message type */
 508         if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
 509                 ld->ld_errno = LDAP_DECODING_ERROR;
 510                 ber_free( ber, 1 );
 511                 return( -1 );
 512         }
 513
 514 #ifdef NEW_LOGGING
 515         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 516                 "read1msg: ldap_read: message type %s msgid %ld, original id %ld\n",
 517             ldap_int_msgtype2str( tag ),
 518                 (long) lr->lr_msgid, (long) lr->lr_origid ));
 519 #else
 520         Debug( LDAP_DEBUG_TRACE,
 521                 "ldap_read: message type %s msgid %ld, original id %ld\n",
 522             ldap_int_msgtype2str( tag ),
 523                 (long) lr->lr_msgid, (long) lr->lr_origid );
 524 #endif
 525
 526         id = lr->lr_origid;
 527         refer_cnt = 0;
 528         hadref = simple_request = 0;
 529         rc = -2;        /* default is to keep looking (no response found) */
 530         lr->lr_res_msgtype = tag;
 531
 532         /*
 533          * This code figures out if we are going to chase a
 534          * referral / search reference, or pass it back to the application
 535          */
 536         v3ref = 0;      /* Assume not a V3 search reference or referral */
 537         if( (tag != LDAP_RES_SEARCH_ENTRY) && (ld->ld_version > LDAP_VERSION2) ) {
 538                 BerElement      tmpber = *ber;  /* struct copy */
 539                 char **refs = NULL;
 540
 541                 if( tag == LDAP_RES_SEARCH_REFERENCE) {
 542                         /* This is a V3 search reference */
 543                         /* Assume we do not chase the reference, but pass it to application */
 544                         v3ref = -1;
 545                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
 546                                         (lr->lr_parent != NULL) )
 547                         {
 548                                 /* Get the referral list */
 549                                 if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
 550                                         rc = LDAP_DECODING_ERROR;
 551                                 } else {
 552                                         /* Note: refs arrary is freed by ldap_chase_v3referrals */
 553                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 554                                             1, &lr->lr_res_error, &hadref );
 555                                         if ( refer_cnt > 0 ) {  /* sucessfully chased reference */
 556                                                 /* If haven't got end search, set chasing referrals */
 557                                                 if( lr->lr_status != LDAP_REQST_COMPLETED) {
 558                                                         lr->lr_status = LDAP_REQST_CHASINGREFS;
 559 #ifdef NEW_LOGGING
 560                                                         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 561                                                                 "read1msg: search ref chased,"
 562                                                                 "mark request chasing refs, id =        %d\n",
 563                                                                 lr->lr_msgid ));
 564 #else
 565                                                         Debug( LDAP_DEBUG_TRACE,
 566                                                             "read1msg:  search ref chased, mark request chasing refs, id = %d\n",
 567                                                             lr->lr_msgid, 0, 0);
 568 #endif
 569                                                 }
 570                                                 v3ref = 1;      /* We sucessfully chased the reference */
 571                                         }
 572                                 }
 573                         }
 574                 } else {
 575                         /* Check for V3 referral */
 576                         ber_len_t len;
 577                         if ( ber_scanf( &tmpber, "{iaa",/*}*/ &lderr,
 578                                     &lr->lr_res_matched, &lr->lr_res_error )
 579                                     != LBER_ERROR ) {
 580                                 /* Check if V3 referral */
 581                                 if( ber_peek_tag( &tmpber, &len) == LDAP_TAG_REFERRAL ) {
 582                                         /* We have a V3 referral, assume we cannot chase it */
 583                                         v3ref = -1;
 584                                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS)
 585                                                          || (lr->lr_parent != NULL) )
 586                                         {
 587                                                 v3ref = -1;  /* Assume referral not chased and return it to app */
 588                                                 /* Get the referral list */
 589                                                 if( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
 590                                                         rc = LDAP_DECODING_ERROR;
 591                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 592 #ifdef NEW_LOGGING
 593                                                         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 594                                                                 "read1msg: referral decode error,"
 595                                                                 "mark request completed, id =   %d\n",
 596                                                                 lr->lr_msgid ));
 597 #else
 598                                                         Debug( LDAP_DEBUG_TRACE,
 599                                                             "read1msg: referral decode error, mark request completed, id = %d\n",
 600                                                                     lr->lr_msgid, 0, 0);
 601 #endif
 602                                                 } else {
 603                                                         /* Chase the referral
 604                                                          * Note: refs arrary is freed by ldap_chase_v3referrals
 605                                                          */
 606                                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 607                                                             0, &lr->lr_res_error, &hadref );
 608                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 609 #ifdef NEW_LOGGING
 610                                                         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 611                                                                 "read1msg: referral chased,"
 612                                                                 "mark request completed, id =   %d\n",
 613                                                                 lr->lr_msgid ));
 614 #else
 615                                                         Debug( LDAP_DEBUG_TRACE,
 616                                                             "read1msg:  referral chased, mark request completed, id = %d\n",
 617                                                             lr->lr_msgid, 0, 0);
 618 #endif
 619                                                         if( refer_cnt > 0) {
 620                                                                 v3ref = 1;  /* Referral successfully chased */
 621                                                         }
 622                                                 }
 623                                         }
 624                                 }
 625
 626                                 if( lr->lr_res_matched != NULL ) {
 627                                         LDAP_FREE( lr->lr_res_matched );
 628                                         lr->lr_res_matched = NULL;
 629                                 }
 630                                 if( lr->lr_res_error != NULL ) {
 631                                         LDAP_FREE( lr->lr_res_error );
 632                                         lr->lr_res_error = NULL;
 633                                 }
 634                         }
 635                 }
 636         }
 637
 638         /* All results that just return a status, i.e. don't return data
 639          * go through the following code.  This code also chases V2 referrals
 640          * and checks if all referrals have been chased.
 641          */
 642         if ( (tag != LDAP_RES_SEARCH_ENTRY) && (v3ref > -1) ) {
 643                 /* For a v3 search referral/reference, only come here if already chased it */
 644                 if ( ld->ld_version >= LDAP_VERSION2 &&
 645                         ( lr->lr_parent != NULL ||
 646                         LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ) )
 647                 {
 648                         tmpber = *ber;  /* struct copy */
 649                         if ( v3ref == 1 ) {
 650                                 /* V3 search reference or V3 referral
 651                                  * sucessfully chased. If this message
 652                                  * is a search result, then it has no more
 653                                  * outstanding referrals.
 654                                  */
 655                                 if ( tag == LDAP_RES_SEARCH_RESULT )
 656                                         refer_cnt = 0;
 657                         } else if ( ber_scanf( &tmpber, "{iaa}", &lderr,
 658                             &lr->lr_res_matched, &lr->lr_res_error )
 659                             != LBER_ERROR ) {
 660                                 if ( lderr != LDAP_SUCCESS ) {
 661                                         /* referrals are in error string */
 662                                         refer_cnt = ldap_chase_referrals( ld, lr,
 663                                                 &lr->lr_res_error, -1, &hadref );
 664                                         lr->lr_status = LDAP_REQST_COMPLETED;
 665 #ifdef NEW_LOGGING
 666                                         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 667                                                 "read1msg: V2 referral chased,"
 668                                                 "mark request completed, id =   %d\n",
 669                                                 lr->lr_msgid ));
 670 #else
 671                                         Debug( LDAP_DEBUG_TRACE,
 672                                             "read1msg:  V2 referral chased, mark request completed, id = %d\n", lr->lr_msgid, 0, 0);
 673 #endif
 674                                 }
 675
 676                                 /* save errno, message, and matched string */
 677                                 if ( !hadref || lr->lr_res_error == NULL ) {
 678                                         lr->lr_res_errno = ( lderr ==
 679                                         LDAP_PARTIAL_RESULTS ) ? LDAP_SUCCESS
 680                                         : lderr;
 681                                 } else if ( ld->ld_errno != LDAP_SUCCESS ) {
 682                                         lr->lr_res_errno = ld->ld_errno;
 683                                 } else {
 684                                         lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
 685                                 }
 686 #ifdef NEW_LOGGING
 687 LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 688         "read1msg: new result: res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 689     lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 690     lr->lr_res_matched ? lr->lr_res_matched : "" ));
 691 #else
 692 Debug( LDAP_DEBUG_TRACE,
 693     "new result:  res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 694     lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 695     lr->lr_res_matched ? lr->lr_res_matched : "" );
 696 #endif
 697                         }
 698                 }
 699
 700 #ifdef NEW_LOGGING
 701                 LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 702                         "read1msg: %d new referrals\n", refer_cnt ));
 703 #else
 704                 Debug( LDAP_DEBUG_TRACE,
 705                     "read1msg:  %d new referrals\n", refer_cnt, 0, 0 );
 706 #endif
 707
 708                 if ( refer_cnt != 0 ) { /* chasing referrals */
 709                         ber_free( ber, 1 );
 710                         ber = NULL;
 711                         if ( refer_cnt < 0 ) {
 712                                 return( -1 );   /* fatal error */
 713                         }
 714                         lr->lr_res_errno = LDAP_SUCCESS; /* sucessfully chased referral */
 715                 } else {
 716                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
 717                                 /* request without any referrals */
 718                                 simple_request = ( hadref ? 0 : 1 );
 719                         } else {
 720                                 /* request with referrals or child request */
 721                                 ber_free( ber, 1 );
 722                                 ber = NULL;
 723                         }
 724
 725                         lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
 726 #ifdef NEW_LOGGING
 727                         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 728                                 "read1msg: mark request completed, id = %d\n", lr->lr_msgid ));
 729 #else
 730                         Debug( LDAP_DEBUG_TRACE,
 731                             "read1msg:  mark request completed, id = %d\n", lr->lr_msgid, 0, 0);
 732 #endif
 733                         while ( lr->lr_parent != NULL ) {
 734                                 merge_error_info( ld, lr->lr_parent, lr );
 735
 736                                 lr = lr->lr_parent;
 737                                 if ( --lr->lr_outrefcnt > 0 ) {
 738                                         break;  /* not completely done yet */
 739                                 }
 740                         }
 741
 742                         /* Check if all requests are finished, lr is now parent */
 743                         tmplr = lr;
 744                         if (tmplr->lr_status == LDAP_REQST_COMPLETED) {
 745                                 for(tmplr=lr->lr_child; tmplr != NULL; tmplr=tmplr->lr_refnext) {
 746                                 if( tmplr->lr_status != LDAP_REQST_COMPLETED) {
 747                                         break;
 748                                         }
 749                                 }
 750                         }
 751
 752                         /* This is the parent request if the request has referrals */
 753                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL && tmplr == NULL ) {
 754                                 id = lr->lr_msgid;
 755                                 tag = lr->lr_res_msgtype;
 756 #ifdef NEW_LOGGING
 757                         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 758                                 "read1msg: request %ld done\n", (long) id ));
 759                         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 760                                 "read1msg: res_errno: %d,res_error: <%s>, res_matched: <%s>\n",
 761                                 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 762                                 lr->lr_res_matched ? lr->lr_res_matched : "" ));
 763 #else
 764                                 Debug( LDAP_DEBUG_ANY, "request %ld done\n",
 765                                     (long) id, 0, 0 );
 766 Debug( LDAP_DEBUG_TRACE,
 767 "res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 768 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 769 lr->lr_res_matched ? lr->lr_res_matched : "" );
 770 #endif
 771                                 if ( !simple_request ) {
 772                                         ber_free( ber, 1 );
 773                                         ber = NULL;
 774                                         if ( build_result_ber( ld, &ber, lr )
 775                                             == LBER_ERROR ) {
 776                                                 rc = -1; /* fatal error */
 777                                         }
 778                                 }
 779
 780                                 ldap_free_request( ld, lr );
 781                         }
 782
 783                         if ( lc != NULL ) {
 784                                 ldap_free_connection( ld, lc, 0, 1 );
 785                         }
 786                 }
 787         }
 788
 789         if ( ber == NULL ) {
 790                 return( rc );
 791         }
 792
 793         /* make a new ldap message */
 794         if ( (new = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) ))
 795             == NULL ) {
 796                 ld->ld_errno = LDAP_NO_MEMORY;
 797                 return( -1 );
 798         }
 799         new->lm_msgid = (int)id;
 800         new->lm_msgtype = tag;
 801         new->lm_ber = ber;
 802
 803 #ifndef LDAP_NOCACHE
 804                 if ( ld->ld_cache != NULL ) {
 805                         ldap_add_result_to_cache( ld, new );
 806                 }
 807 #endif /* LDAP_NOCACHE */
 808
 809         /* is this the one we're looking for? */
 810         if ( msgid == LDAP_RES_ANY || id == msgid ) {
 811                 if ( all == LDAP_MSG_ONE
 812                     || (new->lm_msgtype != LDAP_RES_SEARCH_RESULT
 813                     && new->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 814                     && new->lm_msgtype != LDAP_RES_SEARCH_REFERENCE) ) {
 815                         *result = new;
 816                         ld->ld_errno = LDAP_SUCCESS;
 817                         return( tag );
 818                 } else if ( new->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
 819                         foundit = 1;    /* return the chain later */
 820                 }
 821         }
 822
 823         /*
 824          * if not, we must add it to the list of responses.  if
 825          * the msgid is already there, it must be part of an existing
 826          * search response.
 827          */
 828
 829         prev = NULL;
 830         for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
 831                 if ( l->lm_msgid == new->lm_msgid )
 832                         break;
 833                 prev = l;
 834         }
 835
 836         /* not part of an existing search response */
 837         if ( l == NULL ) {
 838                 if ( foundit ) {
 839                         *result = new;
 840                         ld->ld_errno = LDAP_SUCCESS;
 841                         return( tag );
 842                 }
 843
 844                 new->lm_next = ld->ld_responses;
 845                 ld->ld_responses = new;
 846                 return( -2 );   /* continue looking */
 847         }
 848
 849 #ifdef NEW_LOGGING
 850         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 851                 "read1msg: adding response id %ld type %ld\n",
 852                 (long) new->lm_msgid, (long) new->lm_msgtype ));
 853 #else
 854         Debug( LDAP_DEBUG_TRACE, "adding response id %ld type %ld:\n",
 855             (long) new->lm_msgid, (long) new->lm_msgtype, 0 );
 856 #endif
 857
 858         /* part of a search response - add to end of list of entries */
 859         for ( tmp = l; (tmp->lm_chain != NULL) &&
 860                 ((tmp->lm_chain->lm_msgtype == LDAP_RES_SEARCH_ENTRY) ||
 861                  (tmp->lm_chain->lm_msgtype == LDAP_RES_SEARCH_REFERENCE) ||
 862                          (tmp->lm_chain->lm_msgtype == LDAP_RES_EXTENDED_PARTIAL ));
 863             tmp = tmp->lm_chain )
 864                 ;       /* NULL */
 865         tmp->lm_chain = new;
 866
 867         /* return the whole chain if that's what we were looking for */
 868         if ( foundit ) {
 869                 if ( prev == NULL )
 870                         ld->ld_responses = l->lm_next;
 871                 else
 872                         prev->lm_next = l->lm_next;
 873                 *result = l;
 874                 ld->ld_errno = LDAP_SUCCESS;
 875 #ifdef LDAP_WORLD_P16
 876                 /*
 877                  * XXX questionable fix; see text for [P16] on
 878                  * http://www.critical-angle.com/ldapworld/patch/
 879                  *
 880                  * inclusion of this patch causes searchs to hang on
 881                  * multiple platforms
 882                  */
 883                 return( l->lm_msgtype );
 884 #else   /* LDAP_WORLD_P16 */
 885                 return( tag );
 886 #endif  /* !LDAP_WORLD_P16 */
 887         }
 888
 889         return( -2 );   /* continue looking */
 890 }
 891
 892
 893 static ber_tag_t
 894 build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
 895 {
 896         ber_len_t       len;
 897         ber_tag_t       tag;
 898         ber_int_t       along;
 899         BerElement *ber;
 900
 901         *bp = NULL;
 902         ber = ldap_alloc_ber_with_options( ld );
 903
 904         if( ber == NULL ) {
 905                 ld->ld_errno = LDAP_NO_MEMORY;
 906                 return LBER_ERROR;
 907         }
 908
 909         if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
 910             lr->lr_res_msgtype, lr->lr_res_errno,
 911             lr->lr_res_matched ? lr->lr_res_matched : "",
 912             lr->lr_res_error ? lr->lr_res_error : "" ) == -1 ) {
 913
 914                 ld->ld_errno = LDAP_ENCODING_ERROR;
 915                 ber_free(ber, 1);
 916                 return( LBER_ERROR );
 917         }
 918
 919         ber_reset( ber, 1 );
 920
 921         if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
 922                 ld->ld_errno = LDAP_DECODING_ERROR;
 923                 ber_free(ber, 1);
 924                 return( LBER_ERROR );
 925         }
 926
 927         if ( ber_get_int( ber, &along ) == LBER_ERROR ) {
 928                 ld->ld_errno = LDAP_DECODING_ERROR;
 929                 ber_free(ber, 1);
 930                 return( LBER_ERROR );
 931         }
 932
 933         tag = ber_peek_tag( ber, &len );
 934
 935         if ( tag == LBER_ERROR ) {
 936                 ld->ld_errno = LDAP_DECODING_ERROR;
 937                 ber_free(ber, 1);
 938                 return( LBER_ERROR );
 939         }
 940
 941         *bp = ber;
 942         return tag;
 943 }
 944
 945
 946 static void
 947 merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
 948 {
 949 /*
 950  * Merge error information in "lr" with "parentr" error code and string.
 951  */
 952         if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
 953                 parentr->lr_res_errno = lr->lr_res_errno;
 954                 if ( lr->lr_res_error != NULL ) {
 955                         (void)ldap_append_referral( ld, &parentr->lr_res_error,
 956                             lr->lr_res_error );
 957                 }
 958         } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
 959             parentr->lr_res_errno == LDAP_SUCCESS ) {
 960                 parentr->lr_res_errno = lr->lr_res_errno;
 961                 if ( parentr->lr_res_error != NULL ) {
 962                         LDAP_FREE( parentr->lr_res_error );
 963                 }
 964                 parentr->lr_res_error = lr->lr_res_error;
 965                 lr->lr_res_error = NULL;
 966                 if ( LDAP_NAME_ERROR( lr->lr_res_errno )) {
 967                         if ( parentr->lr_res_matched != NULL ) {
 968                                 LDAP_FREE( parentr->lr_res_matched );
 969                         }
 970                         parentr->lr_res_matched = lr->lr_res_matched;
 971                         lr->lr_res_matched = NULL;
 972                 }
 973         }
 974
 975 #ifdef NEW_LOGGING
 976         LDAP_LOG (( "result", LDAP_LEVEL_DETAIL1,
 977                 "read1msg: merged parent (id %d) error info: result errno %d, "
 978                 "error <%s>, matched <%s>\n", parentr->lr_msgid,
 979             parentr->lr_res_errno, parentr->lr_res_error ?
 980             parentr->lr_res_error : "", parentr->lr_res_matched ?
 981             parentr->lr_res_matched : "" ));
 982 #else
 983         Debug( LDAP_DEBUG_TRACE, "merged parent (id %d) error info:  ",
 984             parentr->lr_msgid, 0, 0 );
 985         Debug( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
 986             parentr->lr_res_errno, parentr->lr_res_error ?
 987             parentr->lr_res_error : "", parentr->lr_res_matched ?
 988             parentr->lr_res_matched : "" );
 989 #endif
 990 }
 991
 992
 993
 994 int
 995 ldap_msgtype( LDAPMessage *lm )
 996 {
 997         assert( lm != NULL );
 998         return ( lm != NULL ) ? lm->lm_msgtype : -1;
 999 }
1000
1001
1002 int
1003 ldap_msgid( LDAPMessage *lm )
1004 {
1005         assert( lm != NULL );
1006
1007         return ( lm != NULL ) ? lm->lm_msgid : -1;
1008 }
1009
1010
1011 char * ldap_int_msgtype2str( ber_tag_t tag )
1012 {
1013         switch( tag ) {
1014         case LDAP_RES_ADD: return "add";
1015         case LDAP_RES_BIND: return "bind";
1016         case LDAP_RES_COMPARE: return "compare";
1017         case LDAP_RES_DELETE: return "delete";
1018         case LDAP_RES_EXTENDED: return "extended-result";
1019         case LDAP_RES_EXTENDED_PARTIAL: return "extended-partial";
1020         case LDAP_RES_MODIFY: return "modify";
1021         case LDAP_RES_RENAME: return "rename";
1022         case LDAP_RES_SEARCH_ENTRY: return "search-entry";
1023         case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
1024         case LDAP_RES_SEARCH_RESULT: return "search-result";
1025         }
1026         return "unknown";
1027 }
1028
1029 int
1030 ldap_msgfree( LDAPMessage *lm )
1031 {
1032         LDAPMessage     *next;
1033         int             type = 0;
1034
1035 #ifdef NEW_LOGGING
1036         LDAP_LOG (( "result", LDAP_LEVEL_ENTRY, "ldap_msgfree\n" ));
1037 #else
1038         Debug( LDAP_DEBUG_TRACE, "ldap_msgfree\n", 0, 0, 0 );
1039 #endif
1040
1041         for ( ; lm != NULL; lm = next ) {
1042                 next = lm->lm_chain;
1043                 type = lm->lm_msgtype;
1044                 ber_free( lm->lm_ber, 1 );
1045                 LDAP_FREE( (char *) lm );
1046         }
1047
1048         return( type );
1049 }
1050
1051 /*
1052  * ldap_msgdelete - delete a message.  It returns:
1053  *      0       if the entire message was deleted
1054  *      -1      if the message was not found, or only part of it was found
1055  */
1056 int
1057 ldap_msgdelete( LDAP *ld, int msgid )
1058 {
1059         LDAPMessage     *lm, *prev;
1060
1061         assert( ld != NULL );
1062
1063 #ifdef NEW_LOGGING
1064         LDAP_LOG (( "result", LDAP_LEVEL_ENTRY, "ldap_msgdelete\n" ));
1065 #else
1066         Debug( LDAP_DEBUG_TRACE, "ldap_msgdelete\n", 0, 0, 0 );
1067 #endif
1068
1069         prev = NULL;
1070         for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
1071                 if ( lm->lm_msgid == msgid )
1072                         break;
1073                 prev = lm;
1074         }
1075
1076         if ( lm == NULL )
1077                 return( -1 );
1078
1079         if ( prev == NULL )
1080                 ld->ld_responses = lm->lm_next;
1081         else
1082                 prev->lm_next = lm->lm_next;
1083
1084         if ( ldap_msgfree( lm ) == LDAP_RES_SEARCH_ENTRY )
1085                 return( -1 );
1086
1087         return( 0 );
1088 }
1089
1090
1091 /*
1092  * return 1 if message msgid is waiting to be abandoned, 0 otherwise
1093  */
1094 static int
1095 ldap_abandoned( LDAP *ld, ber_int_t msgid )
1096 {
1097         int     i;
1098
1099         if ( ld->ld_abandoned == NULL )
1100                 return( 0 );
1101
1102         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1103                 if ( ld->ld_abandoned[i] == msgid )
1104                         return( 1 );
1105
1106         return( 0 );
1107 }
1108
1109
1110 static int
1111 ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
1112 {
1113         int     i;
1114
1115         if ( ld->ld_abandoned == NULL )
1116                 return( -1 );
1117
1118         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1119                 if ( ld->ld_abandoned[i] == msgid )
1120                         break;
1121
1122         if ( ld->ld_abandoned[i] == -1 )
1123                 return( -1 );
1124
1125         for ( ; ld->ld_abandoned[i] != -1; i++ ) {
1126                 ld->ld_abandoned[i] = ld->ld_abandoned[i + 1];
1127         }
1128
1129         return( 0 );
1130 }