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 /* Note: A verbatim copy of version 2.0.1 of the OpenLDAP Public License
  31  * can be found in the file "build/LICENSE-2.0.1" in this distribution
  32  * of OpenLDAP Software.
  33  */
  34
  35 /*
  36  * LDAPv3 (RFC2251)
  37  *      LDAPResult ::= SEQUENCE {
  38  *              resultCode              ENUMERATED { ... },
  39  *              matchedDN               LDAPDN,
  40  *              errorMessage    LDAPString,
  41  *              referral                Referral OPTIONAL
  42  *      }
  43  *      Referral ::= SEQUENCE OF LDAPURL        (one or more)
  44  *      LDAPURL ::= LDAPString                          (limited to URL chars)
  45  */
  46
  47 #include "portable.h"
  48
  49 #include <stdio.h>
  50
  51 #include <ac/stdlib.h>
  52
  53 #include <ac/errno.h>
  54 #include <ac/socket.h>
  55 #include <ac/string.h>
  56 #include <ac/time.h>
  57 #include <ac/unistd.h>
  58
  59 #include "ldap-int.h"
  60 #include "ldap_log.h"
  61
  62 static int ldap_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
  63 static int ldap_mark_abandoned LDAP_P(( LDAP *ld, ber_int_t msgid ));
  64 static int wait4msg LDAP_P(( LDAP *ld, ber_int_t msgid, int all, struct timeval *timeout,
  65         LDAPMessage **result ));
  66 static ber_tag_t try_read1msg LDAP_P(( LDAP *ld, ber_int_t msgid,
  67         int all, Sockbuf *sb, LDAPConn *lc, LDAPMessage **result ));
  68 static ber_tag_t build_result_ber LDAP_P(( LDAP *ld, BerElement **bp, LDAPRequest *lr ));
  69 static void merge_error_info LDAP_P(( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr ));
  70 static LDAPMessage * chkResponseList LDAP_P(( LDAP *ld, int msgid, int all));
  71
  72
  73 /*
  74  * ldap_result - wait for an ldap result response to a message from the
  75  * ldap server.  If msgid is LDAP_RES_ANY (-1), any message will be
  76  * accepted.  If msgid is LDAP_RES_UNSOLICITED (0), any unsolicited
  77  * message is accepted.  Otherwise ldap_result will wait for a response
  78  * with msgid.  If all is LDAP_MSG_ONE (0) the first message with id
  79  * msgid will be accepted, otherwise, ldap_result will wait for all
  80  * responses with id msgid and then return a pointer to the entire list
  81  * of messages.  In general, this is only useful for search responses,
  82  * which can be of three message types (zero or more entries, zero or
  83  * search references, followed by an ldap result).  An extension to
  84  * LDAPv3 allows partial extended responses to be returned in response
  85  * to any request.  The type of the first message received is returned.
  86  * When waiting, any messages that have been abandoned are discarded.
  87  *
  88  * Example:
  89  *      ldap_result( s, msgid, all, timeout, result )
  90  */
  91 int
  92 ldap_result(
  93         LDAP *ld,
  94         int msgid,
  95         int all,
  96         struct timeval *timeout,
  97         LDAPMessage **result )
  98 {
  99         LDAPMessage     *lm;
 100
 101         assert( ld != NULL );
 102         assert( result != NULL );
 103
 104 #ifdef NEW_LOGGING
 105         LDAP_LOG ( OPERATION, ARGS, "ldap_result msgid %d\n", msgid, 0, 0 );
 106 #else
 107         Debug( LDAP_DEBUG_TRACE, "ldap_result msgid %d\n", msgid, 0, 0 );
 108 #endif
 109
 110     lm = chkResponseList(ld, msgid, all);
 111
 112         if ( lm == NULL ) {
 113                 return( wait4msg( ld, msgid, all, timeout, result ) );
 114         }
 115
 116         *result = lm;
 117         ld->ld_errno = LDAP_SUCCESS;
 118         return( lm->lm_msgtype );
 119 }
 120
 121 static LDAPMessage *
 122 chkResponseList(
 123         LDAP *ld,
 124         int msgid,
 125         int all)
 126 {
 127         LDAPMessage     *lm, *lastlm, *nextlm;
 128     /*
 129          * Look through the list of responses we have received on
 130          * this association and see if the response we're interested in
 131          * is there.  If it is, return it.  If not, call wait4msg() to
 132          * wait until it arrives or timeout occurs.
 133          */
 134
 135 #ifdef NEW_LOGGING
 136         LDAP_LOG ( OPERATION, ARGS, "ldap_chkResponseList for msgid=%d, all=%d\n",
 137                 msgid, all, 0 );
 138 #else
 139         Debug( LDAP_DEBUG_TRACE,
 140                 "ldap_chkResponseList for msgid=%d, all=%d\n",
 141             msgid, all, 0 );
 142 #endif
 143         lastlm = NULL;
 144         for ( lm = ld->ld_responses; lm != NULL; lm = nextlm ) {
 145                 nextlm = lm->lm_next;
 146
 147                 if ( ldap_abandoned( ld, lm->lm_msgid ) ) {
 148 #ifdef NEW_LOGGING
 149                         LDAP_LOG ( OPERATION, DETAIL1,
 150                                 "ldap_chkResponseList msg abandoned, msgid %d\n", msgid, 0, 0 );
 151 #else
 152                         Debug( LDAP_DEBUG_TRACE,
 153                                 "ldap_chkResponseList msg abandoned, msgid %d\n",
 154                             msgid, 0, 0 );
 155 #endif
 156                         ldap_mark_abandoned( ld, lm->lm_msgid );
 157
 158                         if ( lastlm == NULL ) {
 159                                 /* Remove first entry in list */
 160                                 ld->ld_responses = lm->lm_next;
 161                         } else {
 162                                 lastlm->lm_next = nextlm;
 163                         }
 164
 165                         ldap_msgfree( lm );
 166
 167                         continue;
 168                 }
 169
 170                 if ( msgid == LDAP_RES_ANY || lm->lm_msgid == msgid ) {
 171                         LDAPMessage     *tmp;
 172
 173                         if ( all == LDAP_MSG_ONE || msgid == LDAP_RES_UNSOLICITED ) {
 174                                 break;
 175                         }
 176
 177                         for ( tmp = lm; tmp != NULL; tmp = tmp->lm_chain ) {
 178                                 if ( tmp->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 179                                     && tmp->lm_msgtype != LDAP_RES_SEARCH_REFERENCE
 180                                         && tmp->lm_msgtype != LDAP_RES_EXTENDED_PARTIAL )
 181                                 {
 182                                         break;
 183                                 }
 184                         }
 185
 186                         if ( tmp == NULL ) {
 187                                 lm = NULL;
 188                         }
 189
 190                         break;
 191                 }
 192                 lastlm = lm;
 193         }
 194
 195     if ( lm != NULL ) {
 196                 /* Found an entry, remove it from the list */
 197             if ( lastlm == NULL ) {
 198                     ld->ld_responses = (all == LDAP_MSG_ONE && lm->lm_chain != NULL
 199                         ? lm->lm_chain : lm->lm_next);
 200             } else {
 201                     lastlm->lm_next = (all == LDAP_MSG_ONE && lm->lm_chain != NULL
 202                         ? lm->lm_chain : lm->lm_next);
 203             }
 204             if ( all == LDAP_MSG_ONE && lm->lm_chain != NULL ) {
 205                     lm->lm_chain->lm_next = lm->lm_next;
 206                     lm->lm_chain = NULL;
 207             }
 208             lm->lm_next = NULL;
 209     }
 210
 211 #ifdef LDAP_DEBUG
 212         if( lm == NULL) {
 213 #ifdef NEW_LOGGING
 214                 LDAP_LOG ( OPERATION, RESULTS, "ldap_chkResponseList returns NULL\n",
 215                         0, 0, 0 );
 216 #else
 217                 Debug( LDAP_DEBUG_TRACE,
 218                         "ldap_chkResponseList returns NULL\n", 0, 0, 0);
 219 #endif
 220         } else {
 221 #ifdef NEW_LOGGING
 222                 LDAP_LOG ( OPERATION, RESULTS,
 223                         "ldap_chkResponseList returns msgid %d, type 0x%02lu\n",
 224                         lm->lm_msgid, (unsigned long) lm->lm_msgtype, 0 );
 225 #else
 226                 Debug( LDAP_DEBUG_TRACE,
 227                         "ldap_chkResponseList returns msgid %d, type 0x%02lu\n",
 228                         lm->lm_msgid, (unsigned long) lm->lm_msgtype, 0);
 229 #endif
 230         }
 231 #endif
 232     return lm;
 233 }
 234
 235 static int
 236 wait4msg(
 237         LDAP *ld,
 238         ber_int_t msgid,
 239         int all,
 240         struct timeval *timeout,
 241         LDAPMessage **result )
 242 {
 243         int             rc;
 244         struct timeval  tv, *tvp;
 245         time_t          start_time = 0;
 246         time_t          tmp_time;
 247         LDAPConn        *lc, *nextlc;
 248
 249         assert( ld != NULL );
 250         assert( result != NULL );
 251
 252 #ifdef LDAP_DEBUG
 253         if ( timeout == NULL ) {
 254 #ifdef NEW_LOGGING
 255                 LDAP_LOG ( OPERATION, ARGS,
 256                         "wait4msg (infinite timeout), msgid %d\n", msgid, 0, 0 );
 257 #else
 258                 Debug( LDAP_DEBUG_TRACE, "wait4msg (infinite timeout), msgid %d\n",
 259                     msgid, 0, 0 );
 260 #endif
 261         } else {
 262 #ifdef NEW_LOGGING
 263                 LDAP_LOG ( OPERATION, ARGS,
 264                         "wait4msg (timeout %ld sec, %ld usec), msgid %d\n",
 265                         (long) timeout->tv_sec, (long) timeout->tv_usec, msgid );
 266 #else
 267                 Debug( LDAP_DEBUG_TRACE, "wait4msg (timeout %ld sec, %ld usec), msgid %d\n",
 268                        (long) timeout->tv_sec, (long) timeout->tv_usec, msgid );
 269 #endif
 270         }
 271 #endif /* LDAP_DEBUG */
 272
 273         if ( timeout == NULL ) {
 274                 tvp = NULL;
 275         } else {
 276                 tv = *timeout;
 277                 tvp = &tv;
 278                 start_time = time( NULL );
 279         }
 280
 281         rc = -2;
 282         while ( rc == -2 ) {
 283 #ifdef LDAP_DEBUG
 284 #ifdef NEW_LOGGING
 285                 LDAP_LOG ( OPERATION, ARGS,
 286                         "wait4msg continue, msgid %d, all %d\n", msgid, all, 0 );
 287 #else
 288                 Debug( LDAP_DEBUG_TRACE, "wait4msg continue, msgid %d, all %d\n",
 289                     msgid, all, 0 );
 290 #endif
 291                 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
 292                         ldap_dump_connection( ld, ld->ld_conns, 1 );
 293                         ldap_dump_requests_and_responses( ld );
 294                 }
 295 #endif /* LDAP_DEBUG */
 296
 297         if( (*result = chkResponseList(ld, msgid, all)) != NULL ) {
 298             rc = (*result)->lm_msgtype;
 299         } else {
 300
 301                         for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
 302                                 if ( ber_sockbuf_ctrl( lc->lconn_sb,
 303                                                 LBER_SB_OPT_DATA_READY, NULL ) ) {
 304                                             rc = try_read1msg( ld, msgid, all, lc->lconn_sb,
 305                                                 lc, result );
 306                                     break;
 307                                 }
 308                 }
 309
 310                     if ( lc == NULL ) {
 311                             rc = ldap_int_select( ld, tvp );
 312
 313
 314 #ifdef LDAP_DEBUG
 315                             if ( rc == -1 ) {
 316 #ifdef NEW_LOGGING
 317                                         LDAP_LOG ( OPERATION, ARGS,
 318                                                 "wait4msg: ldap_int_select returned -1: errno %d\n",
 319                                                 errno, 0, 0 );
 320 #else
 321                                 Debug( LDAP_DEBUG_TRACE,
 322                                         "ldap_int_select returned -1: errno %d\n",
 323                                         errno, 0, 0 );
 324 #endif
 325                             }
 326 #endif
 327
 328                             if ( rc == 0 || ( rc == -1 && (
 329                                     !LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_RESTART)
 330                                     || errno != EINTR )))
 331                             {
 332                                     ld->ld_errno = (rc == -1 ? LDAP_SERVER_DOWN :
 333                                         LDAP_TIMEOUT);
 334                                     return( rc );
 335                             }
 336
 337                             if ( rc == -1 ) {
 338                                     rc = -2;    /* select interrupted: loop */
 339                             } else {
 340                                     rc = -2;
 341                                     if ( ld->ld_requests &&
 342                                                 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
 343                                                 ldap_is_write_ready( ld,
 344                                                         ld->ld_requests->lr_conn->lconn_sb ) ) {
 345                                                 ldap_int_flush_request( ld, ld->ld_requests );
 346                                         }
 347                                     for ( lc = ld->ld_conns; rc == -2 && lc != NULL;
 348                                         lc = nextlc ) {
 349                                             nextlc = lc->lconn_next;
 350                                             if ( lc->lconn_status ==
 351                                                 LDAP_CONNST_CONNECTED &&
 352                                                 ldap_is_read_ready( ld,
 353                                                 lc->lconn_sb )) {
 354                                                     rc = try_read1msg( ld, msgid, all,
 355                                                         lc->lconn_sb, lc, result );
 356                                             }
 357                                     }
 358                             }
 359                     }
 360                 }
 361
 362                 if ( rc == -2 && tvp != NULL ) {
 363                         tmp_time = time( NULL );
 364                         if (( tv.tv_sec -=  ( tmp_time - start_time )) <= 0 ) {
 365                                 rc = 0; /* timed out */
 366                                 ld->ld_errno = LDAP_TIMEOUT;
 367                                 break;
 368                         }
 369
 370 #ifdef NEW_LOGGING
 371                         LDAP_LOG ( OPERATION, DETAIL1,
 372                                 "wait4msg: %ld secs to go\n", (long) tv.tv_sec, 0, 0 );
 373 #else
 374                         Debug( LDAP_DEBUG_TRACE, "wait4msg:  %ld secs to go\n",
 375                                (long) tv.tv_sec, 0, 0 );
 376 #endif
 377                         start_time = tmp_time;
 378                 }
 379         }
 380
 381         return( rc );
 382 }
 383
 384
 385 static ber_tag_t
 386 try_read1msg(
 387         LDAP *ld,
 388         ber_int_t msgid,
 389         int all,
 390         Sockbuf *sb,
 391         LDAPConn *lc,
 392         LDAPMessage **result )
 393 {
 394         BerElement      *ber;
 395         LDAPMessage     *new, *l, *prev, *tmp;
 396         ber_int_t       id;
 397         ber_tag_t       tag;
 398         ber_len_t       len;
 399         int             foundit = 0;
 400         LDAPRequest     *lr, *tmplr;
 401         BerElement      tmpber;
 402         int             rc, refer_cnt, hadref, simple_request;
 403         ber_int_t       lderr;
 404         /*
 405          * v3ref = flag for V3 referral / search reference
 406          * 0 = not a ref, 1 = sucessfully chased ref, -1 = pass ref to application
 407          */
 408         int     v3ref;
 409
 410         assert( ld != NULL );
 411         assert( lc != NULL );
 412
 413 #ifdef NEW_LOGGING
 414         LDAP_LOG ( OPERATION, ARGS, "read1msg: msgid %d, all %d\n", msgid, all, 0 );
 415 #else
 416         Debug( LDAP_DEBUG_TRACE, "read1msg: msgid %d, all %d\n", msgid, all, 0 );
 417 #endif
 418
 419 retry:
 420     if ( lc->lconn_ber == NULL ) {
 421                 lc->lconn_ber = ldap_alloc_ber_with_options(ld);
 422
 423                 if( lc->lconn_ber == NULL ) {
 424                         return -1;
 425                 }
 426     }
 427
 428         ber = lc->lconn_ber;
 429         assert( LBER_VALID (ber) );
 430
 431 retry2:
 432         /* get the next message */
 433         errno = 0;
 434 #ifdef LDAP_CONNECTIONLESS
 435         if ( LDAP_IS_UDP(ld) ) {
 436                 struct sockaddr from;
 437                 ber_int_sb_read(sb, &from, sizeof(struct sockaddr));
 438         }
 439 #endif
 440         if ( (tag = ber_get_next( sb, &len, ber ))
 441             != LDAP_TAG_MESSAGE ) {
 442                 if ( tag == LBER_DEFAULT) {
 443 #ifdef LDAP_DEBUG
 444 #ifdef NEW_LOGGING
 445                         LDAP_LOG ( OPERATION, DETAIL1,
 446                                 "read1msg: ber_get_next failed\n", 0, 0, 0 );
 447 #else
 448                         Debug( LDAP_DEBUG_CONNS,
 449                               "ber_get_next failed.\n", 0, 0, 0 );
 450 #endif
 451 #endif
 452 #ifdef EWOULDBLOCK
 453                         if (errno==EWOULDBLOCK) return -2;
 454 #endif
 455 #ifdef EAGAIN
 456                         if (errno == EAGAIN) return -2;
 457 #endif
 458                         ld->ld_errno = LDAP_SERVER_DOWN;
 459                         return -1;
 460                 }
 461                 ld->ld_errno = LDAP_LOCAL_ERROR;
 462                 return -1;
 463         }
 464
 465         /*
 466      * We read a complete message.
 467          * The connection should no longer need this ber.
 468          */
 469     lc->lconn_ber = NULL;
 470
 471         /* message id */
 472         if ( ber_get_int( ber, &id ) == LBER_ERROR ) {
 473                 ber_free( ber, 1 );
 474                 ld->ld_errno = LDAP_DECODING_ERROR;
 475                 return( -1 );
 476         }
 477
 478         /* if it's been abandoned, toss it */
 479         if ( ldap_abandoned( ld, id ) ) {
 480 #ifdef NEW_LOGGING
 481                 LDAP_LOG ( OPERATION, DETAIL1, "read1msg: abandoned\n", 0, 0, 0 );
 482 #else
 483                 Debug( LDAP_DEBUG_ANY, "abandoned\n", 0, 0, 0);
 484 #endif
 485 retry_ber:
 486                 if ( ber_sockbuf_ctrl( sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 487                         ber_init2( ber, NULL, ld->ld_lberoptions );
 488                         goto retry2;
 489                 }
 490                 ber_free( ber, 1 );
 491                 return( -2 );   /* continue looking */
 492         }
 493
 494         if (( lr = ldap_find_request_by_msgid( ld, id )) == NULL ) {
 495 #ifdef NEW_LOGGING
 496                 LDAP_LOG ( OPERATION, DETAIL1,
 497                         "read1msg: no request for response with msgid %ld (tossing)\n",
 498                         (long) id, 0, 0 );
 499 #else
 500                 Debug( LDAP_DEBUG_ANY,
 501                     "no request for response with msgid %ld (tossing)\n",
 502                     (long) id, 0, 0 );
 503 #endif
 504                 goto retry_ber;
 505         }
 506 #ifdef LDAP_CONNECTIONLESS
 507         if (LDAP_IS_UDP(ld) && ld->ld_options.ldo_version == LDAP_VERSION2) {
 508                 struct berval blank;
 509                 ber_scanf(ber, "m{", &blank);
 510         }
 511 #endif
 512         /* the message type */
 513         if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
 514                 ld->ld_errno = LDAP_DECODING_ERROR;
 515                 ber_free( ber, 1 );
 516                 return( -1 );
 517         }
 518
 519 #ifdef NEW_LOGGING
 520         LDAP_LOG ( OPERATION, DETAIL1,
 521                 "read1msg: 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 #else
 525         Debug( LDAP_DEBUG_TRACE,
 526                 "ldap_read: message type %s msgid %ld, original id %ld\n",
 527             ldap_int_msgtype2str( tag ),
 528                 (long) lr->lr_msgid, (long) lr->lr_origid );
 529 #endif
 530
 531         id = lr->lr_origid;
 532         refer_cnt = 0;
 533         hadref = simple_request = 0;
 534         rc = -2;        /* default is to keep looking (no response found) */
 535         lr->lr_res_msgtype = tag;
 536
 537         /*
 538          * This code figures out if we are going to chase a
 539          * referral / search reference, or pass it back to the application
 540          */
 541         v3ref = 0;      /* Assume not a V3 search reference or referral */
 542         if( (tag != LDAP_RES_SEARCH_ENTRY) && (ld->ld_version > LDAP_VERSION2) ) {
 543                 BerElement      tmpber = *ber;  /* struct copy */
 544                 char **refs = NULL;
 545
 546                 if( tag == LDAP_RES_SEARCH_REFERENCE) {
 547                         /* This is a V3 search reference */
 548                         /* Assume we do not chase the reference, but pass it to application */
 549                         v3ref = -1;
 550                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ||
 551                                         (lr->lr_parent != NULL) )
 552                         {
 553                                 /* Get the referral list */
 554                                 if ( ber_scanf( &tmpber, "{v}", &refs ) == LBER_ERROR ) {
 555                                         rc = LDAP_DECODING_ERROR;
 556                                 } else {
 557                                         /* Note: refs arrary is freed by ldap_chase_v3referrals */
 558                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 559                                             1, &lr->lr_res_error, &hadref );
 560                                         if ( refer_cnt > 0 ) {  /* sucessfully chased reference */
 561                                                 /* If haven't got end search, set chasing referrals */
 562                                                 if( lr->lr_status != LDAP_REQST_COMPLETED) {
 563                                                         lr->lr_status = LDAP_REQST_CHASINGREFS;
 564 #ifdef NEW_LOGGING
 565                                                         LDAP_LOG ( OPERATION, DETAIL1,
 566                                                                 "read1msg: search ref chased,"
 567                                                                 "mark request chasing refs, id =        %d\n",
 568                                                                 lr->lr_msgid, 0, 0 );
 569 #else
 570                                                         Debug( LDAP_DEBUG_TRACE,
 571                                                             "read1msg:  search ref chased, mark request chasing refs, id = %d\n",
 572                                                             lr->lr_msgid, 0, 0);
 573 #endif
 574                                                 }
 575                                                 v3ref = 1;      /* We sucessfully chased the reference */
 576                                         }
 577                                 }
 578                         }
 579                 } else {
 580                         /* Check for V3 referral */
 581                         ber_len_t len;
 582                         if ( ber_scanf( &tmpber, "{iaa",/*}*/ &lderr,
 583                                     &lr->lr_res_matched, &lr->lr_res_error )
 584                                     != LBER_ERROR ) {
 585                                 /* Check if V3 referral */
 586                                 if( ber_peek_tag( &tmpber, &len) == LDAP_TAG_REFERRAL ) {
 587                                         /* We have a V3 referral, assume we cannot chase it */
 588                                         v3ref = -1;
 589                                         if( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS)
 590                                                          || (lr->lr_parent != NULL) )
 591                                         {
 592                                                 v3ref = -1;  /* Assume referral not chased and return it to app */
 593                                                 /* Get the referral list */
 594                                                 if( ber_scanf( &tmpber, "{v}", &refs) == LBER_ERROR) {
 595                                                         rc = LDAP_DECODING_ERROR;
 596                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 597 #ifdef NEW_LOGGING
 598                                                         LDAP_LOG ( OPERATION, DETAIL1,
 599                                                                 "read1msg: referral decode error,"
 600                                                                 "mark request completed, id =   %d\n",
 601                                                                 lr->lr_msgid, 0, 0 );
 602 #else
 603                                                         Debug( LDAP_DEBUG_TRACE,
 604                                                             "read1msg: referral decode error, mark request completed, id = %d\n",
 605                                                                     lr->lr_msgid, 0, 0);
 606 #endif
 607                                                 } else {
 608                                                         /* Chase the referral
 609                                                          * Note: refs arrary is freed by ldap_chase_v3referrals
 610                                                          */
 611                                                         refer_cnt = ldap_chase_v3referrals( ld, lr, refs,
 612                                                             0, &lr->lr_res_error, &hadref );
 613                                                         lr->lr_status = LDAP_REQST_COMPLETED;
 614 #ifdef NEW_LOGGING
 615                                                         LDAP_LOG ( OPERATION, DETAIL1,
 616                                                                 "read1msg: referral chased,"
 617                                                                 "mark request completed, id =   %d\n",
 618                                                                 lr->lr_msgid, 0, 0 );
 619 #else
 620                                                         Debug( LDAP_DEBUG_TRACE,
 621                                                             "read1msg:  referral chased, mark request completed, id = %d\n",
 622                                                             lr->lr_msgid, 0, 0);
 623 #endif
 624                                                         if( refer_cnt > 0) {
 625                                                                 v3ref = 1;  /* Referral successfully chased */
 626                                                         }
 627                                                 }
 628                                         }
 629                                 }
 630
 631                                 if( lr->lr_res_matched != NULL ) {
 632                                         LDAP_FREE( lr->lr_res_matched );
 633                                         lr->lr_res_matched = NULL;
 634                                 }
 635                                 if( lr->lr_res_error != NULL ) {
 636                                         LDAP_FREE( lr->lr_res_error );
 637                                         lr->lr_res_error = NULL;
 638                                 }
 639                         }
 640                 }
 641         }
 642
 643         /* All results that just return a status, i.e. don't return data
 644          * go through the following code.  This code also chases V2 referrals
 645          * and checks if all referrals have been chased.
 646          */
 647         if ( (tag != LDAP_RES_SEARCH_ENTRY) && (v3ref > -1) ) {
 648                 /* For a v3 search referral/reference, only come here if already chased it */
 649                 if ( ld->ld_version >= LDAP_VERSION2 &&
 650                         ( lr->lr_parent != NULL ||
 651                         LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_REFERRALS) ) )
 652                 {
 653                         tmpber = *ber;  /* struct copy */
 654                         if ( v3ref == 1 ) {
 655                                 /* V3 search reference or V3 referral
 656                                  * sucessfully chased. If this message
 657                                  * is a search result, then it has no more
 658                                  * outstanding referrals.
 659                                  */
 660                                 if ( tag == LDAP_RES_SEARCH_RESULT )
 661                                         refer_cnt = 0;
 662                         } else if ( ber_scanf( &tmpber, "{iaa}", &lderr,
 663                             &lr->lr_res_matched, &lr->lr_res_error )
 664                             != LBER_ERROR ) {
 665                                 if ( lderr != LDAP_SUCCESS ) {
 666                                         /* referrals are in error string */
 667                                         refer_cnt = ldap_chase_referrals( ld, lr,
 668                                                 &lr->lr_res_error, -1, &hadref );
 669                                         lr->lr_status = LDAP_REQST_COMPLETED;
 670 #ifdef NEW_LOGGING
 671                                         LDAP_LOG ( OPERATION, DETAIL1,
 672                                                 "read1msg: V2 referral chased,"
 673                                                 "mark request completed, id =   %d\n",
 674                                                 lr->lr_msgid, 0, 0 );
 675 #else
 676                                         Debug( LDAP_DEBUG_TRACE,
 677                                             "read1msg:  V2 referral chased, mark request completed, id = %d\n", lr->lr_msgid, 0, 0);
 678 #endif
 679                                 }
 680
 681                                 /* save errno, message, and matched string */
 682                                 if ( !hadref || lr->lr_res_error == NULL ) {
 683                                         lr->lr_res_errno = ( lderr ==
 684                                         LDAP_PARTIAL_RESULTS ) ? LDAP_SUCCESS
 685                                         : lderr;
 686                                 } else if ( ld->ld_errno != LDAP_SUCCESS ) {
 687                                         lr->lr_res_errno = ld->ld_errno;
 688                                 } else {
 689                                         lr->lr_res_errno = LDAP_PARTIAL_RESULTS;
 690                                 }
 691 #ifdef NEW_LOGGING
 692 LDAP_LOG ( OPERATION, DETAIL1,
 693         "read1msg: 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 #else
 697 Debug( LDAP_DEBUG_TRACE,
 698     "new result:  res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 699     lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 700     lr->lr_res_matched ? lr->lr_res_matched : "" );
 701 #endif
 702                         }
 703                 }
 704
 705 #ifdef NEW_LOGGING
 706                 LDAP_LOG ( OPERATION, DETAIL1, "read1msg: %d new referrals\n",
 707                         refer_cnt, 0, 0 );
 708 #else
 709                 Debug( LDAP_DEBUG_TRACE,
 710                     "read1msg:  %d new referrals\n", refer_cnt, 0, 0 );
 711 #endif
 712
 713                 if ( refer_cnt != 0 ) { /* chasing referrals */
 714                         ber_free( ber, 1 );
 715                         ber = NULL;
 716                         if ( refer_cnt < 0 ) {
 717                                 return( -1 );   /* fatal error */
 718                         }
 719                         lr->lr_res_errno = LDAP_SUCCESS; /* sucessfully chased referral */
 720                 } else {
 721                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL ) {
 722                                 /* request without any referrals */
 723                                 simple_request = ( hadref ? 0 : 1 );
 724                         } else {
 725                                 /* request with referrals or child request */
 726                                 ber_free( ber, 1 );
 727                                 ber = NULL;
 728                         }
 729
 730                         lr->lr_status = LDAP_REQST_COMPLETED; /* declare this request done */
 731 #ifdef NEW_LOGGING
 732                         LDAP_LOG ( OPERATION, DETAIL1,
 733                                 "read1msg: mark request completed, id = %d\n",
 734                                 lr->lr_msgid, 0, 0 );
 735 #else
 736                         Debug( LDAP_DEBUG_TRACE,
 737                             "read1msg:  mark request completed, id = %d\n", lr->lr_msgid, 0, 0);
 738 #endif
 739                         while ( lr->lr_parent != NULL ) {
 740                                 merge_error_info( ld, lr->lr_parent, lr );
 741
 742                                 lr = lr->lr_parent;
 743                                 if ( --lr->lr_outrefcnt > 0 ) {
 744                                         break;  /* not completely done yet */
 745                                 }
 746                         }
 747
 748                         /* Check if all requests are finished, lr is now parent */
 749                         tmplr = lr;
 750                         if (tmplr->lr_status == LDAP_REQST_COMPLETED) {
 751                                 for(tmplr=lr->lr_child; tmplr != NULL; tmplr=tmplr->lr_refnext) {
 752                                 if( tmplr->lr_status != LDAP_REQST_COMPLETED) {
 753                                         break;
 754                                         }
 755                                 }
 756                         }
 757
 758                         /* This is the parent request if the request has referrals */
 759                         if ( lr->lr_outrefcnt <= 0 && lr->lr_parent == NULL && tmplr == NULL ) {
 760                                 id = lr->lr_msgid;
 761                                 tag = lr->lr_res_msgtype;
 762 #ifdef NEW_LOGGING
 763                         LDAP_LOG ( OPERATION, DETAIL1,
 764                                 "read1msg: request %ld done\n", (long) id, 0, 0 );
 765                         LDAP_LOG ( OPERATION, DETAIL1,
 766                                 "read1msg: res_errno: %d,res_error: <%s>, res_matched: <%s>\n",
 767                                 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 768                                 lr->lr_res_matched ? lr->lr_res_matched : "" );
 769 #else
 770                                 Debug( LDAP_DEBUG_ANY, "request %ld done\n",
 771                                     (long) id, 0, 0 );
 772 Debug( LDAP_DEBUG_TRACE,
 773 "res_errno: %d, res_error: <%s>, res_matched: <%s>\n",
 774 lr->lr_res_errno, lr->lr_res_error ? lr->lr_res_error : "",
 775 lr->lr_res_matched ? lr->lr_res_matched : "" );
 776 #endif
 777                                 if ( !simple_request ) {
 778                                         ber_free( ber, 1 );
 779                                         ber = NULL;
 780                                         if ( build_result_ber( ld, &ber, lr )
 781                                             == LBER_ERROR ) {
 782                                                 rc = -1; /* fatal error */
 783                                         }
 784                                 }
 785
 786                                 ldap_free_request( ld, lr );
 787                         }
 788
 789                         if ( lc != NULL ) {
 790                                 ldap_free_connection( ld, lc, 0, 1 );
 791                         }
 792                 }
 793         }
 794
 795         if ( ber == NULL ) {
 796                 return( rc );
 797         }
 798
 799         /* make a new ldap message */
 800         if ( (new = (LDAPMessage *) LDAP_CALLOC( 1, sizeof(LDAPMessage) ))
 801             == NULL ) {
 802                 ld->ld_errno = LDAP_NO_MEMORY;
 803                 return( -1 );
 804         }
 805         new->lm_msgid = (int)id;
 806         new->lm_msgtype = tag;
 807         new->lm_ber = ber;
 808
 809 #ifndef LDAP_NOCACHE
 810                 if ( ld->ld_cache != NULL ) {
 811                         ldap_add_result_to_cache( ld, new );
 812                 }
 813 #endif /* LDAP_NOCACHE */
 814
 815         /* is this the one we're looking for? */
 816         if ( msgid == LDAP_RES_ANY || id == msgid ) {
 817                 if ( all == LDAP_MSG_ONE
 818                     || (new->lm_msgtype != LDAP_RES_SEARCH_RESULT
 819                     && new->lm_msgtype != LDAP_RES_SEARCH_ENTRY
 820                     && new->lm_msgtype != LDAP_RES_SEARCH_REFERENCE) ) {
 821                         *result = new;
 822                         ld->ld_errno = LDAP_SUCCESS;
 823                         return( tag );
 824                 } else if ( new->lm_msgtype == LDAP_RES_SEARCH_RESULT) {
 825                         foundit = 1;    /* return the chain later */
 826                 }
 827         }
 828
 829         /*
 830          * if not, we must add it to the list of responses.  if
 831          * the msgid is already there, it must be part of an existing
 832          * search response.
 833          */
 834
 835         prev = NULL;
 836         for ( l = ld->ld_responses; l != NULL; l = l->lm_next ) {
 837                 if ( l->lm_msgid == new->lm_msgid )
 838                         break;
 839                 prev = l;
 840         }
 841
 842         /* not part of an existing search response */
 843         if ( l == NULL ) {
 844                 if ( foundit ) {
 845                         *result = new;
 846                         ld->ld_errno = LDAP_SUCCESS;
 847                         return( tag );
 848                 }
 849
 850                 new->lm_next = ld->ld_responses;
 851                 ld->ld_responses = new;
 852                 goto leave;
 853         }
 854
 855 #ifdef NEW_LOGGING
 856         LDAP_LOG ( OPERATION, DETAIL1,
 857                 "read1msg: adding response id %ld type %ld\n",
 858                 (long) new->lm_msgid, (long) new->lm_msgtype, 0 );
 859 #else
 860         Debug( LDAP_DEBUG_TRACE, "adding response id %ld type %ld:\n",
 861             (long) new->lm_msgid, (long) new->lm_msgtype, 0 );
 862 #endif
 863
 864         /* part of a search response - add to end of list of entries */
 865         for ( tmp = l; (tmp->lm_chain != NULL) &&
 866                 ((tmp->lm_chain->lm_msgtype == LDAP_RES_SEARCH_ENTRY) ||
 867                  (tmp->lm_chain->lm_msgtype == LDAP_RES_SEARCH_REFERENCE) ||
 868                          (tmp->lm_chain->lm_msgtype == LDAP_RES_EXTENDED_PARTIAL ));
 869             tmp = tmp->lm_chain )
 870                 ;       /* NULL */
 871         tmp->lm_chain = new;
 872
 873         /* return the whole chain if that's what we were looking for */
 874         if ( foundit ) {
 875                 if ( prev == NULL )
 876                         ld->ld_responses = l->lm_next;
 877                 else
 878                         prev->lm_next = l->lm_next;
 879                 *result = l;
 880                 ld->ld_errno = LDAP_SUCCESS;
 881 #ifdef LDAP_WORLD_P16
 882                 /*
 883                  * XXX questionable fix; see text for [P16] on
 884                  * http://www.critical-angle.com/ldapworld/patch/
 885                  *
 886                  * inclusion of this patch causes searchs to hang on
 887                  * multiple platforms
 888                  */
 889                 return( l->lm_msgtype );
 890 #else   /* LDAP_WORLD_P16 */
 891                 return( tag );
 892 #endif  /* !LDAP_WORLD_P16 */
 893         }
 894
 895 leave:
 896         if ( ber_sockbuf_ctrl( sb, LBER_SB_OPT_DATA_READY, NULL ) ) {
 897                 goto retry;
 898         }
 899         return( -2 );   /* continue looking */
 900 }
 901
 902
 903 static ber_tag_t
 904 build_result_ber( LDAP *ld, BerElement **bp, LDAPRequest *lr )
 905 {
 906         ber_len_t       len;
 907         ber_tag_t       tag;
 908         ber_int_t       along;
 909         BerElement *ber;
 910
 911         *bp = NULL;
 912         ber = ldap_alloc_ber_with_options( ld );
 913
 914         if( ber == NULL ) {
 915                 ld->ld_errno = LDAP_NO_MEMORY;
 916                 return LBER_ERROR;
 917         }
 918
 919         if ( ber_printf( ber, "{it{ess}}", lr->lr_msgid,
 920             lr->lr_res_msgtype, lr->lr_res_errno,
 921             lr->lr_res_matched ? lr->lr_res_matched : "",
 922             lr->lr_res_error ? lr->lr_res_error : "" ) == -1 ) {
 923
 924                 ld->ld_errno = LDAP_ENCODING_ERROR;
 925                 ber_free(ber, 1);
 926                 return( LBER_ERROR );
 927         }
 928
 929         ber_reset( ber, 1 );
 930
 931         if ( ber_skip_tag( ber, &len ) == LBER_ERROR ) {
 932                 ld->ld_errno = LDAP_DECODING_ERROR;
 933                 ber_free(ber, 1);
 934                 return( LBER_ERROR );
 935         }
 936
 937         if ( ber_get_int( ber, &along ) == LBER_ERROR ) {
 938                 ld->ld_errno = LDAP_DECODING_ERROR;
 939                 ber_free(ber, 1);
 940                 return( LBER_ERROR );
 941         }
 942
 943         tag = ber_peek_tag( ber, &len );
 944
 945         if ( tag == LBER_ERROR ) {
 946                 ld->ld_errno = LDAP_DECODING_ERROR;
 947                 ber_free(ber, 1);
 948                 return( LBER_ERROR );
 949         }
 950
 951         *bp = ber;
 952         return tag;
 953 }
 954
 955
 956 static void
 957 merge_error_info( LDAP *ld, LDAPRequest *parentr, LDAPRequest *lr )
 958 {
 959 /*
 960  * Merge error information in "lr" with "parentr" error code and string.
 961  */
 962         if ( lr->lr_res_errno == LDAP_PARTIAL_RESULTS ) {
 963                 parentr->lr_res_errno = lr->lr_res_errno;
 964                 if ( lr->lr_res_error != NULL ) {
 965                         (void)ldap_append_referral( ld, &parentr->lr_res_error,
 966                             lr->lr_res_error );
 967                 }
 968         } else if ( lr->lr_res_errno != LDAP_SUCCESS &&
 969             parentr->lr_res_errno == LDAP_SUCCESS ) {
 970                 parentr->lr_res_errno = lr->lr_res_errno;
 971                 if ( parentr->lr_res_error != NULL ) {
 972                         LDAP_FREE( parentr->lr_res_error );
 973                 }
 974                 parentr->lr_res_error = lr->lr_res_error;
 975                 lr->lr_res_error = NULL;
 976                 if ( LDAP_NAME_ERROR( lr->lr_res_errno )) {
 977                         if ( parentr->lr_res_matched != NULL ) {
 978                                 LDAP_FREE( parentr->lr_res_matched );
 979                         }
 980                         parentr->lr_res_matched = lr->lr_res_matched;
 981                         lr->lr_res_matched = NULL;
 982                 }
 983         }
 984
 985 #ifdef NEW_LOGGING
 986         LDAP_LOG( OPERATION, DETAIL1, "merged parent (id %d) error info:  ",
 987             parentr->lr_msgid, 0, 0 );
 988         LDAP_LOG( OPERATION, DETAIL1, "result errno %d, error <%s>, matched <%s>\n",
 989             parentr->lr_res_errno, parentr->lr_res_error ?
 990             parentr->lr_res_error : "", parentr->lr_res_matched ?
 991             parentr->lr_res_matched : "" );
 992 #else
 993         Debug( LDAP_DEBUG_TRACE, "merged parent (id %d) error info:  ",
 994             parentr->lr_msgid, 0, 0 );
 995         Debug( LDAP_DEBUG_TRACE, "result errno %d, error <%s>, matched <%s>\n",
 996             parentr->lr_res_errno, parentr->lr_res_error ?
 997             parentr->lr_res_error : "", parentr->lr_res_matched ?
 998             parentr->lr_res_matched : "" );
 999 #endif
1000 }
1001
1002
1003
1004 int
1005 ldap_msgtype( LDAPMessage *lm )
1006 {
1007         assert( lm != NULL );
1008         return ( lm != NULL ) ? lm->lm_msgtype : -1;
1009 }
1010
1011
1012 int
1013 ldap_msgid( LDAPMessage *lm )
1014 {
1015         assert( lm != NULL );
1016
1017         return ( lm != NULL ) ? lm->lm_msgid : -1;
1018 }
1019
1020
1021 char * ldap_int_msgtype2str( ber_tag_t tag )
1022 {
1023         switch( tag ) {
1024         case LDAP_RES_ADD: return "add";
1025         case LDAP_RES_BIND: return "bind";
1026         case LDAP_RES_COMPARE: return "compare";
1027         case LDAP_RES_DELETE: return "delete";
1028         case LDAP_RES_EXTENDED: return "extended-result";
1029         case LDAP_RES_EXTENDED_PARTIAL: return "extended-partial";
1030         case LDAP_RES_MODIFY: return "modify";
1031         case LDAP_RES_RENAME: return "rename";
1032         case LDAP_RES_SEARCH_ENTRY: return "search-entry";
1033         case LDAP_RES_SEARCH_REFERENCE: return "search-reference";
1034         case LDAP_RES_SEARCH_RESULT: return "search-result";
1035         }
1036         return "unknown";
1037 }
1038
1039 int
1040 ldap_msgfree( LDAPMessage *lm )
1041 {
1042         LDAPMessage     *next;
1043         int             type = 0;
1044
1045 #ifdef NEW_LOGGING
1046         LDAP_LOG ( OPERATION, ENTRY, "ldap_msgfree\n", 0, 0, 0 );
1047 #else
1048         Debug( LDAP_DEBUG_TRACE, "ldap_msgfree\n", 0, 0, 0 );
1049 #endif
1050
1051         for ( ; lm != NULL; lm = next ) {
1052                 next = lm->lm_chain;
1053                 type = lm->lm_msgtype;
1054                 ber_free( lm->lm_ber, 1 );
1055                 LDAP_FREE( (char *) lm );
1056         }
1057
1058         return( type );
1059 }
1060
1061 /*
1062  * ldap_msgdelete - delete a message.  It returns:
1063  *      0       if the entire message was deleted
1064  *      -1      if the message was not found, or only part of it was found
1065  */
1066 int
1067 ldap_msgdelete( LDAP *ld, int msgid )
1068 {
1069         LDAPMessage     *lm, *prev;
1070
1071         assert( ld != NULL );
1072
1073 #ifdef NEW_LOGGING
1074         LDAP_LOG ( OPERATION, ENTRY, "ldap_msgdelete\n", 0, 0, 0 );
1075 #else
1076         Debug( LDAP_DEBUG_TRACE, "ldap_msgdelete\n", 0, 0, 0 );
1077 #endif
1078
1079         prev = NULL;
1080         for ( lm = ld->ld_responses; lm != NULL; lm = lm->lm_next ) {
1081                 if ( lm->lm_msgid == msgid )
1082                         break;
1083                 prev = lm;
1084         }
1085
1086         if ( lm == NULL )
1087                 return( -1 );
1088
1089         if ( prev == NULL )
1090                 ld->ld_responses = lm->lm_next;
1091         else
1092                 prev->lm_next = lm->lm_next;
1093
1094         if ( ldap_msgfree( lm ) == LDAP_RES_SEARCH_ENTRY )
1095                 return( -1 );
1096
1097         return( 0 );
1098 }
1099
1100
1101 /*
1102  * return 1 if message msgid is waiting to be abandoned, 0 otherwise
1103  */
1104 static int
1105 ldap_abandoned( LDAP *ld, ber_int_t msgid )
1106 {
1107         int     i;
1108
1109         if ( ld->ld_abandoned == NULL )
1110                 return( 0 );
1111
1112         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1113                 if ( ld->ld_abandoned[i] == msgid )
1114                         return( 1 );
1115
1116         return( 0 );
1117 }
1118
1119
1120 static int
1121 ldap_mark_abandoned( LDAP *ld, ber_int_t msgid )
1122 {
1123         int     i;
1124
1125         if ( ld->ld_abandoned == NULL )
1126                 return( -1 );
1127
1128         for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
1129                 if ( ld->ld_abandoned[i] == msgid )
1130                         break;
1131
1132         if ( ld->ld_abandoned[i] == -1 )
1133                 return( -1 );
1134
1135         for ( ; ld->ld_abandoned[i] != -1; i++ ) {
1136                 ld->ld_abandoned[i] = ld->ld_abandoned[i + 1];
1137         }
1138
1139         return( 0 );
1140 }