git.sur5r.net Git - openldap/blob - servers/slapd/result.c

   1 /* result.c - routines to send ldap results, errors, and referrals */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2009 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27 #include "portable.h"
  28
  29 #include <stdio.h>
  30
  31 #include <ac/socket.h>
  32 #include <ac/errno.h>
  33 #include <ac/string.h>
  34 #include <ac/ctype.h>
  35 #include <ac/time.h>
  36 #include <ac/unistd.h>
  37
  38 #include "slap.h"
  39
  40 const struct berval slap_dummy_bv = BER_BVNULL;
  41
  42 int slap_null_cb( Operation *op, SlapReply *rs )
  43 {
  44         return 0;
  45 }
  46
  47 int slap_freeself_cb( Operation *op, SlapReply *rs )
  48 {
  49         assert( op->o_callback != NULL );
  50
  51         op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
  52         op->o_callback = NULL;
  53
  54         return SLAP_CB_CONTINUE;
  55 }
  56
  57 static char *v2ref( BerVarray ref, const char *text )
  58 {
  59         size_t len = 0, i = 0;
  60         char *v2;
  61
  62         if(ref == NULL) {
  63                 if (text) {
  64                         return ch_strdup(text);
  65                 } else {
  66                         return NULL;
  67                 }
  68         }
  69
  70         if ( text != NULL ) {
  71                 len = strlen( text );
  72                 if (text[len-1] != '\n') {
  73                     i = 1;
  74                 }
  75         }
  76
  77         v2 = ch_malloc( len+i+sizeof("Referral:") );
  78
  79         if( text != NULL ) {
  80                 strcpy(v2, text);
  81                 if( i ) {
  82                         v2[len++] = '\n';
  83                 }
  84         }
  85         strcpy( v2+len, "Referral:" );
  86         len += sizeof("Referral:");
  87
  88         for( i=0; ref[i].bv_val != NULL; i++ ) {
  89                 v2 = ch_realloc( v2, len + ref[i].bv_len + 1 );
  90                 v2[len-1] = '\n';
  91                 AC_MEMCPY(&v2[len], ref[i].bv_val, ref[i].bv_len );
  92                 len += ref[i].bv_len;
  93                 if (ref[i].bv_val[ref[i].bv_len-1] != '/') {
  94                         ++len;
  95                 }
  96         }
  97
  98         v2[len-1] = '\0';
  99         return v2;
 100 }
 101
 102 ber_tag_t
 103 slap_req2res( ber_tag_t tag )
 104 {
 105         switch( tag ) {
 106         case LDAP_REQ_ADD:
 107         case LDAP_REQ_BIND:
 108         case LDAP_REQ_COMPARE:
 109         case LDAP_REQ_EXTENDED:
 110         case LDAP_REQ_MODIFY:
 111         case LDAP_REQ_MODRDN:
 112                 tag++;
 113                 break;
 114
 115         case LDAP_REQ_DELETE:
 116                 tag = LDAP_RES_DELETE;
 117                 break;
 118
 119         case LDAP_REQ_ABANDON:
 120         case LDAP_REQ_UNBIND:
 121                 tag = LBER_SEQUENCE;
 122                 break;
 123
 124         case LDAP_REQ_SEARCH:
 125                 tag = LDAP_RES_SEARCH_RESULT;
 126                 break;
 127
 128         default:
 129                 tag = LBER_SEQUENCE;
 130         }
 131
 132         return tag;
 133 }
 134
 135 static long send_ldap_ber(
 136         Connection *conn,
 137         BerElement *ber )
 138 {
 139         ber_len_t bytes;
 140         long ret = 0;
 141         int closing = 0;
 142
 143         ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
 144
 145         /* write only one pdu at a time - wait til it's our turn */
 146         ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 147         if ( connection_state_closing( conn )) {
 148                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 149                 return 0;
 150         }
 151         while ( conn->c_writers > 0 ) {
 152                 ldap_pvt_thread_cond_wait( &conn->c_write1_cv, &conn->c_write1_mutex );
 153         }
 154         /* connection was closed under us */
 155         if ( conn->c_writers < 0 ) {
 156                 closing = 1;
 157                 /* we're the last waiter, let the closer continue */
 158                 if ( conn->c_writers == -1 )
 159                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 160         }
 161
 162         conn->c_writers++;
 163
 164         if ( closing ) {
 165                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 166                 return 0;
 167         }
 168
 169         /* write the pdu */
 170         while( 1 ) {
 171                 int err;
 172
 173                 /* lock the connection */
 174                 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 175
 176                 if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) {
 177                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 178                         ret = bytes;
 179                         break;
 180                 }
 181
 182                 err = sock_errno();
 183
 184                 /*
 185                  * we got an error.  if it's ewouldblock, we need to
 186                  * wait on the socket being writable.  otherwise, figure
 187                  * it's a hard error and return.
 188                  */
 189
 190                 Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n",
 191                     err, sock_errstr(err), 0 );
 192
 193                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 194                         connection_closing( conn, "connection lost on write" );
 195
 196                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 197
 198                         ret = -1;
 199                         break;
 200                 }
 201
 202                 /* wait for socket to be write-ready */
 203                 ldap_pvt_thread_mutex_lock( &conn->c_write2_mutex );
 204                 conn->c_writewaiter = 1;
 205                 slapd_set_write( conn->c_sd, 1 );
 206
 207                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 208                 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 209                 ldap_pvt_thread_cond_wait( &conn->c_write2_cv, &conn->c_write2_mutex );
 210                 conn->c_writewaiter = 0;
 211                 ldap_pvt_thread_mutex_unlock( &conn->c_write2_mutex );
 212                 ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 213                 if ( conn->c_writers < 0 ) {
 214                         ret = 0;
 215                         break;
 216                 }
 217         }
 218
 219         if ( conn->c_writers < 0 ) {
 220                 conn->c_writers++;
 221                 if ( !conn->c_writers )
 222                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 223         } else {
 224                 conn->c_writers--;
 225                 ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 226         }
 227         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 228
 229         return ret;
 230 }
 231
 232 static int
 233 send_ldap_control( BerElement *ber, LDAPControl *c )
 234 {
 235         int rc;
 236
 237         assert( c != NULL );
 238
 239         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 240
 241         if( c->ldctl_iscritical ) {
 242                 rc = ber_printf( ber, "b",
 243                         (ber_int_t) c->ldctl_iscritical ) ;
 244                 if( rc == -1 ) return rc;
 245         }
 246
 247         if( c->ldctl_value.bv_val != NULL ) {
 248                 rc = ber_printf( ber, "O", &c->ldctl_value );
 249                 if( rc == -1 ) return rc;
 250         }
 251
 252         rc = ber_printf( ber, /*{*/"N}" );
 253         if( rc == -1 ) return rc;
 254
 255         return 0;
 256 }
 257
 258 static int
 259 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 260 {
 261         int rc;
 262
 263         if( c == NULL )
 264                 return 0;
 265
 266         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 267         if( rc == -1 ) return rc;
 268
 269         for( ; *c != NULL; c++) {
 270                 rc = send_ldap_control( ber, *c );
 271                 if( rc == -1 ) return rc;
 272         }
 273
 274 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 275         /* this is a hack to avoid having to modify op->s_ctrls */
 276         if( o->o_sortedresults ) {
 277                 BerElementBuffer berbuf;
 278                 BerElement *sber = (BerElement *) &berbuf;
 279                 LDAPControl sorted;
 280                 BER_BVZERO( &sorted.ldctl_value );
 281                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 282                 sorted.ldctl_iscritical = 0;
 283
 284                 ber_init2( sber, NULL, LBER_USE_DER );
 285
 286                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 287
 288                 if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
 289                         return -1;
 290                 }
 291
 292                 (void) ber_free_buf( ber );
 293
 294                 rc = send_ldap_control( ber, &sorted );
 295                 if( rc == -1 ) return rc;
 296         }
 297 #endif
 298
 299         rc = ber_printf( ber, /*{*/"N}" );
 300
 301         return rc;
 302 }
 303
 304 /*
 305  * slap_response_play()
 306  *
 307  * plays the callback list; rationale: a callback can
 308  *   - remove itself from the list, by setting op->o_callback = NULL;
 309  *     malloc()'ed callbacks should free themselves from inside the
 310  *     sc_response() function.
 311  *   - replace itself with another (list of) callback(s), by setting
 312  *     op->o_callback = a new (list of) callback(s); in this case, it
 313  *     is the callback's responsibility to to append existing subsequent
 314  *     callbacks to the end of the list that is passed to the sc_response()
 315  *     function.
 316  *   - modify the list of subsequent callbacks by modifying the value
 317  *     of the sc_next field from inside the sc_response() function; this
 318  *     case does not require any handling from inside slap_response_play()
 319  *
 320  * To stop execution of the playlist, the sc_response() function must return
 321  * a value different from SLAP_SC_CONTINUE.
 322  *
 323  * The same applies to slap_cleanup_play(); only, there is no means to stop
 324  * execution of the playlist, since all cleanup functions must be called.
 325  */
 326 static int
 327 slap_response_play(
 328         Operation *op,
 329         SlapReply *rs )
 330 {
 331         int rc;
 332
 333         slap_callback   *sc = op->o_callback, **scp;
 334
 335         rc = SLAP_CB_CONTINUE;
 336         for ( scp = &sc; *scp; ) {
 337                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 338
 339                 op->o_callback = *scp;
 340                 if ( op->o_callback->sc_response ) {
 341                         rc = op->o_callback->sc_response( op, rs );
 342                         if ( op->o_callback == NULL ) {
 343                                 /* the callback has been removed;
 344                                  * repair the list */
 345                                 *scp = sc_next;
 346                                 sc_nextp = scp;
 347
 348                         } else if ( op->o_callback != *scp ) {
 349                                 /* a new callback has been inserted
 350                                  * in place of the existing one; repair the list */
 351                                 *scp = op->o_callback;
 352                                 sc_nextp = scp;
 353                         }
 354                         if ( rc != SLAP_CB_CONTINUE ) break;
 355                 }
 356                 scp = sc_nextp;
 357         }
 358
 359         op->o_callback = sc;
 360         return rc;
 361 }
 362
 363 static int
 364 slap_cleanup_play(
 365         Operation *op,
 366         SlapReply *rs )
 367 {
 368         slap_callback   *sc = op->o_callback, **scp;
 369
 370         for ( scp = &sc; *scp; ) {
 371                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 372
 373                 op->o_callback = *scp;
 374                 if ( op->o_callback->sc_cleanup ) {
 375                         (void)op->o_callback->sc_cleanup( op, rs );
 376                         if ( op->o_callback == NULL ) {
 377                                 /* the callback has been removed;
 378                                  * repair the list */
 379                                 *scp = sc_next;
 380                                 sc_nextp = scp;
 381
 382                         } else if ( op->o_callback != *scp ) {
 383                                 /* a new callback has been inserted
 384                                  * after the existing one; repair the list */
 385                                 /* a new callback has been inserted
 386                                  * in place of the existing one; repair the list */
 387                                 *scp = op->o_callback;
 388                                 sc_nextp = scp;
 389                         }
 390                         /* don't care about the result; do all cleanup */
 391                 }
 392                 scp = sc_nextp;
 393         }
 394
 395         op->o_callback = sc;
 396         return LDAP_SUCCESS;
 397 }
 398
 399 static int
 400 send_ldap_response(
 401         Operation *op,
 402         SlapReply *rs )
 403 {
 404         BerElementBuffer berbuf;
 405         BerElement      *ber = (BerElement *) &berbuf;
 406         int             rc = LDAP_SUCCESS;
 407         long    bytes;
 408
 409         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon ) {
 410                 rc = SLAPD_ABANDON;
 411                 goto clean2;
 412         }
 413
 414         if ( op->o_callback ) {
 415                 rc = slap_response_play( op, rs );
 416                 if ( rc != SLAP_CB_CONTINUE ) {
 417                         goto clean2;
 418                 }
 419         }
 420
 421 #ifdef LDAP_CONNECTIONLESS
 422         if (op->o_conn && op->o_conn->c_is_udp)
 423                 ber = op->o_res_ber;
 424         else
 425 #endif
 426         {
 427                 ber_init_w_nullc( ber, LBER_USE_DER );
 428                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 429         }
 430
 431         Debug( LDAP_DEBUG_TRACE,
 432                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 433                 rs->sr_msgid, rs->sr_tag, rs->sr_err );
 434
 435         if( rs->sr_ref ) {
 436                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 437                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 438                         NULL, NULL );
 439         }
 440
 441 #ifdef LDAP_CONNECTIONLESS
 442         if (op->o_conn && op->o_conn->c_is_udp &&
 443                 op->o_protocol == LDAP_VERSION2 )
 444         {
 445                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 446                         rs->sr_tag, rs->sr_err,
 447                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 448                 rs->sr_text == NULL ? "" : rs->sr_text );
 449         } else
 450 #endif
 451         if ( rs->sr_type == REP_INTERMEDIATE ) {
 452             rc = ber_printf( ber, "{it{" /*"}}"*/,
 453                         rs->sr_msgid, rs->sr_tag );
 454
 455         } else {
 456             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 457                 rs->sr_msgid, rs->sr_tag, rs->sr_err,
 458                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 459                 rs->sr_text == NULL ? "" : rs->sr_text );
 460         }
 461
 462         if( rc != -1 ) {
 463                 if ( rs->sr_ref != NULL ) {
 464                         assert( rs->sr_err == LDAP_REFERRAL );
 465                         rc = ber_printf( ber, "t{W}",
 466                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 467                 } else {
 468                         assert( rs->sr_err != LDAP_REFERRAL );
 469                 }
 470         }
 471
 472         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 473                 rc = ber_printf( ber, "tO",
 474                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 475         }
 476
 477         if( rc != -1 &&
 478                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 479         {
 480                 if ( rs->sr_rspoid != NULL ) {
 481                         rc = ber_printf( ber, "ts",
 482                                 rs->sr_type == REP_EXTENDED
 483                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 484                                 rs->sr_rspoid );
 485                 }
 486                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 487                         rc = ber_printf( ber, "tO",
 488                                 rs->sr_type == REP_EXTENDED
 489                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 490                                 rs->sr_rspdata );
 491                 }
 492         }
 493
 494         if( rc != -1 ) {
 495                 rc = ber_printf( ber, /*"{"*/ "N}" );
 496         }
 497
 498         if( rc != -1 ) {
 499                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 500         }
 501
 502         if( rc != -1 ) {
 503                 rc = ber_printf( ber, /*"{"*/ "N}" );
 504         }
 505
 506 #ifdef LDAP_CONNECTIONLESS
 507         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 508                 && rc != -1 )
 509         {
 510                 rc = ber_printf( ber, /*"{"*/ "N}" );
 511         }
 512 #endif
 513
 514         if ( rc == -1 ) {
 515                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 516
 517 #ifdef LDAP_CONNECTIONLESS
 518                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 519 #endif
 520                 {
 521                         ber_free_buf( ber );
 522                 }
 523                 goto cleanup;
 524         }
 525
 526         /* send BER */
 527         bytes = send_ldap_ber( op->o_conn, ber );
 528 #ifdef LDAP_CONNECTIONLESS
 529         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 530 #endif
 531         {
 532                 ber_free_buf( ber );
 533         }
 534
 535         if ( bytes < 0 ) {
 536                 Debug( LDAP_DEBUG_ANY,
 537                         "send_ldap_response: ber write failed\n",
 538                         0, 0, 0 );
 539
 540                 goto cleanup;
 541         }
 542
 543         ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
 544         ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
 545         ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
 546         ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
 547
 548 cleanup:;
 549         /* Tell caller that we did this for real, as opposed to being
 550          * overridden by a callback
 551          */
 552         rc = SLAP_CB_CONTINUE;
 553
 554 clean2:;
 555         if ( op->o_callback ) {
 556                 (void)slap_cleanup_play( op, rs );
 557         }
 558
 559         if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 560                 rs->sr_flags ^= REP_MATCHED_MUSTBEFREED; /* paranoia */
 561                 if ( rs->sr_matched ) {
 562                         free( (char *)rs->sr_matched );
 563                         rs->sr_matched = NULL;
 564                 }
 565         }
 566
 567         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 568                 rs->sr_flags ^= REP_REF_MUSTBEFREED; /* paranoia */
 569                 if ( rs->sr_ref ) {
 570                         ber_bvarray_free( rs->sr_ref );
 571                         rs->sr_ref = NULL;
 572                 }
 573         }
 574
 575         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
 576                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
 577                 if ( rs->sr_ctrls ) {
 578                         slap_free_ctrls( op, rs->sr_ctrls );
 579                         rs->sr_ctrls = NULL;
 580                 }
 581         }
 582
 583         return rc;
 584 }
 585
 586
 587 void
 588 send_ldap_disconnect( Operation *op, SlapReply *rs )
 589 {
 590 #define LDAP_UNSOLICITED_ERROR(e) \
 591         (  (e) == LDAP_PROTOCOL_ERROR \
 592         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 593         || (e) == LDAP_UNAVAILABLE )
 594
 595         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 596
 597         rs->sr_type = REP_EXTENDED;
 598
 599         Debug( LDAP_DEBUG_TRACE,
 600                 "send_ldap_disconnect %d:%s\n",
 601                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 602
 603         if ( op->o_protocol < LDAP_VERSION3 ) {
 604                 rs->sr_rspoid = NULL;
 605                 rs->sr_tag = slap_req2res( op->o_tag );
 606                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 607
 608         } else {
 609                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 610                 rs->sr_tag = LDAP_RES_EXTENDED;
 611                 rs->sr_msgid = LDAP_RES_UNSOLICITED;
 612         }
 613
 614         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 615                 Statslog( LDAP_DEBUG_STATS,
 616                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 617                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 618                         rs->sr_text ? rs->sr_text : "", 0 );
 619         }
 620 }
 621
 622 void
 623 slap_send_ldap_result( Operation *op, SlapReply *rs )
 624 {
 625         char *tmp = NULL;
 626         const char *otext = rs->sr_text;
 627         BerVarray oref = rs->sr_ref;
 628
 629         rs->sr_type = REP_RESULT;
 630
 631         /* Propagate Abandons so that cleanup callbacks can be processed */
 632         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
 633                 goto abandon;
 634
 635         assert( !LDAP_API_ERROR( rs->sr_err ) );
 636
 637         Debug( LDAP_DEBUG_TRACE,
 638                 "send_ldap_result: %s p=%d\n",
 639                 op->o_log_prefix, op->o_protocol, 0 );
 640
 641         Debug( LDAP_DEBUG_ARGS,
 642                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 643                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 644                 rs->sr_text ? rs->sr_text : "" );
 645
 646
 647         if( rs->sr_ref ) {
 648                 Debug( LDAP_DEBUG_ARGS,
 649                         "send_ldap_result: referral=\"%s\"\n",
 650                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 651                         NULL, NULL );
 652         }
 653
 654         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 655
 656         if ( rs->sr_err == LDAP_REFERRAL ) {
 657                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 658
 659                 if( rs->sr_ref == NULL ) {
 660                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 661                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 662                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 663                 }
 664         }
 665
 666         if ( op->o_protocol < LDAP_VERSION3 ) {
 667                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 668                 rs->sr_text = tmp;
 669                 rs->sr_ref = NULL;
 670         }
 671
 672 abandon:
 673         rs->sr_tag = slap_req2res( op->o_tag );
 674         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 675
 676         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 677                 if ( rs->sr_ref == NULL ) {
 678                         rs->sr_flags ^= REP_REF_MUSTBEFREED;
 679                         ber_bvarray_free( oref );
 680                 }
 681                 oref = NULL; /* send_ldap_response() will free rs->sr_ref if != NULL */
 682         }
 683
 684         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 685                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 686                         Statslog( LDAP_DEBUG_STATS,
 687                                 "%s SEARCH RESULT tag=%lu err=%d nentries=%d text=%s\n",
 688                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 689                                 rs->sr_nentries, rs->sr_text ? rs->sr_text : "" );
 690                 } else {
 691                         Statslog( LDAP_DEBUG_STATS,
 692                                 "%s RESULT tag=%lu err=%d text=%s\n",
 693                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 694                                 rs->sr_text ? rs->sr_text : "", 0 );
 695                 }
 696         }
 697
 698         if( tmp != NULL ) ch_free(tmp);
 699         rs->sr_text = otext;
 700         rs->sr_ref = oref;
 701 }
 702
 703 void
 704 send_ldap_sasl( Operation *op, SlapReply *rs )
 705 {
 706         rs->sr_type = REP_SASL;
 707         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 708                 rs->sr_err,
 709                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 710
 711         rs->sr_tag = slap_req2res( op->o_tag );
 712         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 713
 714         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 715                 Statslog( LDAP_DEBUG_STATS,
 716                         "%s RESULT tag=%lu err=%d text=%s\n",
 717                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 718                         rs->sr_text ? rs->sr_text : "", 0 );
 719         }
 720 }
 721
 722 void
 723 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 724 {
 725         rs->sr_type = REP_EXTENDED;
 726
 727         Debug( LDAP_DEBUG_TRACE,
 728                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 729                 rs->sr_err,
 730                 rs->sr_rspoid ? rs->sr_rspoid : "",
 731                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 732
 733         rs->sr_tag = slap_req2res( op->o_tag );
 734         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 735
 736         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 737                 Statslog( LDAP_DEBUG_STATS,
 738                         "%s RESULT oid=%s err=%d text=%s\n",
 739                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 740                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 741         }
 742 }
 743
 744 void
 745 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 746 {
 747         rs->sr_type = REP_INTERMEDIATE;
 748         Debug( LDAP_DEBUG_TRACE,
 749                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 750                 rs->sr_err,
 751                 rs->sr_rspoid ? rs->sr_rspoid : "",
 752                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 753         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 754         rs->sr_msgid = op->o_msgid;
 755         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 756                 Statslog( LDAP_DEBUG_STATS2,
 757                         "%s INTERM oid=%s\n",
 758                         op->o_log_prefix,
 759                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 760         }
 761 }
 762
 763 /*
 764  * returns:
 765  *
 766  * LDAP_SUCCESS                 entry sent
 767  * LDAP_OTHER                   entry not sent (other)
 768  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 769  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 770  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 771  */
 772
 773 int
 774 slap_send_search_entry( Operation *op, SlapReply *rs )
 775 {
 776         BerElementBuffer berbuf;
 777         BerElement      *ber = (BerElement *) &berbuf;
 778         Attribute       *a;
 779         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 780         int             userattrs;
 781         AccessControlState acl_state = ACL_STATE_INIT;
 782         int                      attrsonly;
 783         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 784
 785         /* a_flags: array of flags telling if the i-th element will be
 786          *          returned or filtered out
 787          * e_flags: array of a_flags
 788          */
 789         char **e_flags = NULL;
 790
 791         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 792                 return LDAP_SIZELIMIT_EXCEEDED;
 793         }
 794
 795         /* Every 64 entries, check for thread pool pause */
 796         if ( ( ( rs->sr_nentries & 0x3f ) == 0x3f ) &&
 797                 ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 )
 798         {
 799                 return LDAP_BUSY;
 800         }
 801
 802         rs->sr_type = REP_SEARCH;
 803
 804         /* eventually will loop through generated operational attribute types
 805          * currently implemented types include:
 806          *      entryDN, subschemaSubentry, and hasSubordinates */
 807         /* NOTE: moved before overlays callback circling because
 808          * they may modify entry and other stuff in rs */
 809         /* check for special all operational attributes ("+") type */
 810         /* FIXME: maybe we could set this flag at the operation level;
 811          * however, in principle the caller of send_search_entry() may
 812          * change the attribute list at each call */
 813         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 814
 815         rc = backend_operational( op, rs );
 816         if ( rc ) {
 817                 goto error_return;
 818         }
 819
 820         if ( op->o_callback ) {
 821                 rc = slap_response_play( op, rs );
 822                 if ( rc != SLAP_CB_CONTINUE ) {
 823                         goto error_return;
 824                 }
 825         }
 826
 827         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 828                 op->o_connid, rs->sr_entry->e_name.bv_val,
 829                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 830
 831         attrsonly = op->ors_attrsonly;
 832
 833         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 834                 Debug( LDAP_DEBUG_ACL,
 835                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 836                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 837
 838                 rc = LDAP_INSUFFICIENT_ACCESS;
 839                 goto error_return;
 840         }
 841
 842         if ( op->o_res_ber ) {
 843                 /* read back control or LDAP_CONNECTIONLESS */
 844             ber = op->o_res_ber;
 845         } else {
 846                 struct berval   bv;
 847
 848                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 849                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 850
 851                 ber_init2( ber, &bv, LBER_USE_DER );
 852                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 853         }
 854
 855 #ifdef LDAP_CONNECTIONLESS
 856         if ( op->o_conn && op->o_conn->c_is_udp ) {
 857                 /* CONNECTIONLESS */
 858                 if ( op->o_protocol == LDAP_VERSION2 ) {
 859                 rc = ber_printf(ber, "t{O{" /*}}*/,
 860                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 861                 } else {
 862                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 863                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 864                 }
 865         } else
 866 #endif
 867         if ( op->o_res_ber ) {
 868                 /* read back control */
 869             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 870         } else {
 871             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 872                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 873         }
 874
 875         if ( rc == -1 ) {
 876                 Debug( LDAP_DEBUG_ANY,
 877                         "send_search_entry: conn %lu  ber_printf failed\n",
 878                         op->o_connid, 0, 0 );
 879
 880                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 881                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 882                 rc = rs->sr_err;
 883                 goto error_return;
 884         }
 885
 886         /* check for special all user attributes ("*") type */
 887         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 888
 889         /* create an array of arrays of flags. Each flag corresponds
 890          * to particular value of attribute and equals 1 if value matches
 891          * to ValuesReturnFilter or 0 if not
 892          */
 893         if ( op->o_vrFilter != NULL ) {
 894                 int     k = 0;
 895                 size_t  size;
 896
 897                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 898                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 899                 }
 900
 901                 size = i * sizeof(char *) + k;
 902                 if ( size > 0 ) {
 903                         char    *a_flags;
 904                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 905                         if( e_flags == NULL ) {
 906                         Debug( LDAP_DEBUG_ANY,
 907                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 908                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 909                                 ber_free( ber, 1 );
 910
 911                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 912                                 goto error_return;
 913                         }
 914                         a_flags = (char *)(e_flags + i);
 915                         memset( a_flags, 0, k );
 916                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 917                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 918                                 e_flags[i] = a_flags;
 919                                 a_flags += j;
 920                         }
 921
 922                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 923                         if ( rc == -1 ) {
 924                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 925                                         "conn %lu matched values filtering failed\n",
 926                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 927                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 928                                 send_ldap_error( op, rs, LDAP_OTHER,
 929                                         "matched values filtering error" );
 930                                 rc = rs->sr_err;
 931                                 goto error_return;
 932                         }
 933                 }
 934         }
 935
 936         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 937                 AttributeDescription *desc = a->a_desc;
 938                 int finish = 0;
 939
 940                 if ( rs->sr_attrs == NULL ) {
 941                         /* all user attrs request, skip operational attributes */
 942                         if( is_at_operational( desc->ad_type ) ) {
 943                                 continue;
 944                         }
 945
 946                 } else {
 947                         /* specific attrs requested */
 948                         if ( is_at_operational( desc->ad_type ) ) {
 949                                 /* if not explicitly requested */
 950                                 if ( !ad_inlist( desc, rs->sr_attrs )) {
 951                                         /* if not all op attrs requested, skip */
 952                                         if ( !SLAP_OPATTRS( rs->sr_attr_flags ))
 953                                                 continue;
 954                                         /* if DSA-specific and replicating, skip */
 955                                         if ( op->o_sync != SLAP_CONTROL_NONE &&
 956                                                 desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
 957                                                 continue;
 958                                 }
 959                         } else {
 960                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 961                                         continue;
 962                                 }
 963                         }
 964                 }
 965
 966                 if ( attrsonly ) {
 967                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 968                                 ACL_READ, &acl_state ) )
 969                         {
 970                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 971                                         "conn %lu access to attribute %s not allowed\n",
 972                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 973                                 continue;
 974                         }
 975
 976                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 977                                 Debug( LDAP_DEBUG_ANY,
 978                                         "send_search_entry: conn %lu  ber_printf failed\n",
 979                                         op->o_connid, 0, 0 );
 980
 981                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 982                                 send_ldap_error( op, rs, LDAP_OTHER,
 983                                         "encoding description error");
 984                                 rc = rs->sr_err;
 985                                 goto error_return;
 986                         }
 987                         finish = 1;
 988
 989                 } else {
 990                         int first = 1;
 991                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
 992                                 if ( ! access_allowed( op, rs->sr_entry,
 993                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
 994                                 {
 995                                         Debug( LDAP_DEBUG_ACL,
 996                                                 "send_search_entry: conn %lu "
 997                                                 "access to attribute %s, value #%d not allowed\n",
 998                                                 op->o_connid, desc->ad_cname.bv_val, i );
 999
1000                                         continue;
1001                                 }
1002
1003                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1004                                         continue;
1005                                 }
1006
1007                                 if ( first ) {
1008                                         first = 0;
1009                                         finish = 1;
1010                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
1011                                                 Debug( LDAP_DEBUG_ANY,
1012                                                         "send_search_entry: conn %lu  ber_printf failed\n",
1013                                                         op->o_connid, 0, 0 );
1014
1015                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1016                                                 send_ldap_error( op, rs, LDAP_OTHER,
1017                                                         "encoding description error");
1018                                                 rc = rs->sr_err;
1019                                                 goto error_return;
1020                                         }
1021                                 }
1022                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1023                                         Debug( LDAP_DEBUG_ANY,
1024                                                 "send_search_entry: conn %lu  "
1025                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
1026
1027                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1028                                         send_ldap_error( op, rs, LDAP_OTHER,
1029                                                 "encoding values error" );
1030                                         rc = rs->sr_err;
1031                                         goto error_return;
1032                                 }
1033                         }
1034                 }
1035
1036                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1037                         Debug( LDAP_DEBUG_ANY,
1038                                 "send_search_entry: conn %lu ber_printf failed\n",
1039                                 op->o_connid, 0, 0 );
1040
1041                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1042                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1043                         rc = rs->sr_err;
1044                         goto error_return;
1045                 }
1046         }
1047
1048         /* NOTE: moved before overlays callback circling because
1049          * they may modify entry and other stuff in rs */
1050         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
1051                 int     k = 0;
1052                 size_t  size;
1053
1054                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1055                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1056                 }
1057
1058                 size = i * sizeof(char *) + k;
1059                 if ( size > 0 ) {
1060                         char    *a_flags, **tmp;
1061
1062                         /*
1063                          * Reuse previous memory - we likely need less space
1064                          * for operational attributes
1065                          */
1066                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
1067                                 op->o_tmpmemctx );
1068                         if ( tmp == NULL ) {
1069                                 Debug( LDAP_DEBUG_ANY,
1070                                         "send_search_entry: conn %lu "
1071                                         "not enough memory "
1072                                         "for matched values filtering\n",
1073                                         op->o_connid, 0, 0 );
1074                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1075                                 send_ldap_error( op, rs, LDAP_OTHER,
1076                                         "not enough memory for matched values filtering" );
1077                                 goto error_return;
1078                         }
1079                         e_flags = tmp;
1080                         a_flags = (char *)(e_flags + i);
1081                         memset( a_flags, 0, k );
1082                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1083                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1084                                 e_flags[i] = a_flags;
1085                                 a_flags += j;
1086                         }
1087                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
1088
1089                         if ( rc == -1 ) {
1090                                 Debug( LDAP_DEBUG_ANY,
1091                                         "send_search_entry: conn %lu "
1092                                         "matched values filtering failed\n",
1093                                         op->o_connid ? op->o_connid : 0, 0, 0);
1094                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1095                                 send_ldap_error( op, rs, LDAP_OTHER,
1096                                         "matched values filtering error" );
1097                                 rc = rs->sr_err;
1098                                 goto error_return;
1099                         }
1100                 }
1101         }
1102
1103         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1104                 AttributeDescription *desc = a->a_desc;
1105
1106                 if ( rs->sr_attrs == NULL ) {
1107                         /* all user attrs request, skip operational attributes */
1108                         if( is_at_operational( desc->ad_type ) ) {
1109                                 continue;
1110                         }
1111
1112                 } else {
1113                         /* specific attrs requested */
1114                         if( is_at_operational( desc->ad_type ) ) {
1115                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1116                                         !ad_inlist( desc, rs->sr_attrs ) )
1117                                 {
1118                                         continue;
1119                                 }
1120                         } else {
1121                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1122                                         continue;
1123                                 }
1124                         }
1125                 }
1126
1127                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1128                         ACL_READ, &acl_state ) )
1129                 {
1130                         Debug( LDAP_DEBUG_ACL,
1131                                 "send_search_entry: conn %lu "
1132                                 "access to attribute %s not allowed\n",
1133                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1134
1135                         continue;
1136                 }
1137
1138                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1139                 if ( rc == -1 ) {
1140                         Debug( LDAP_DEBUG_ANY,
1141                                 "send_search_entry: conn %lu  "
1142                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1143
1144                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1145                         send_ldap_error( op, rs, LDAP_OTHER,
1146                                 "encoding description error" );
1147                         rc = rs->sr_err;
1148                         goto error_return;
1149                 }
1150
1151                 if ( ! attrsonly ) {
1152                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1153                                 if ( ! access_allowed( op, rs->sr_entry,
1154                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1155                                 {
1156                                         Debug( LDAP_DEBUG_ACL,
1157                                                 "send_search_entry: conn %lu "
1158                                                 "access to %s, value %d not allowed\n",
1159                                                 op->o_connid, desc->ad_cname.bv_val, i );
1160
1161                                         continue;
1162                                 }
1163
1164                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1165                                         continue;
1166                                 }
1167
1168                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1169                                         Debug( LDAP_DEBUG_ANY,
1170                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1171                                                 op->o_connid, 0, 0 );
1172
1173                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1174                                         send_ldap_error( op, rs, LDAP_OTHER,
1175                                                 "encoding values error" );
1176                                         rc = rs->sr_err;
1177                                         goto error_return;
1178                                 }
1179                         }
1180                 }
1181
1182                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1183                         Debug( LDAP_DEBUG_ANY,
1184                                 "send_search_entry: conn %lu  ber_printf failed\n",
1185                                 op->o_connid, 0, 0 );
1186
1187                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1188                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1189                         rc = rs->sr_err;
1190                         goto error_return;
1191                 }
1192         }
1193
1194         /* free e_flags */
1195         if ( e_flags ) {
1196                 slap_sl_free( e_flags, op->o_tmpmemctx );
1197                 e_flags = NULL;
1198         }
1199
1200         rc = ber_printf( ber, /*{{*/ "}N}" );
1201
1202         if( rc != -1 ) {
1203                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1204         }
1205
1206         if( rc != -1 ) {
1207 #ifdef LDAP_CONNECTIONLESS
1208                 if( op->o_conn && op->o_conn->c_is_udp ) {
1209                         if ( op->o_protocol != LDAP_VERSION2 ) {
1210                                 rc = ber_printf( ber, /*{*/ "N}" );
1211                         }
1212                 } else
1213 #endif
1214                 if ( op->o_res_ber == NULL ) {
1215                         rc = ber_printf( ber, /*{*/ "N}" );
1216                 }
1217         }
1218
1219         if ( rc == -1 ) {
1220                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1221
1222                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1223                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1224                 rc = rs->sr_err;
1225                 goto error_return;
1226         }
1227
1228         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1229             op->o_log_prefix, rs->sr_entry->e_nname.bv_val, 0, 0, 0 );
1230
1231         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1232                 be_entry_release_rw( op, rs->sr_entry, 0 );
1233                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1234                 rs->sr_entry = NULL;
1235         }
1236
1237         if ( op->o_res_ber == NULL ) {
1238                 bytes = send_ldap_ber( op->o_conn, ber );
1239                 ber_free_buf( ber );
1240
1241                 if ( bytes < 0 ) {
1242                         Debug( LDAP_DEBUG_ANY,
1243                                 "send_search_entry: conn %lu  ber write failed.\n",
1244                                 op->o_connid, 0, 0 );
1245
1246                         rc = LDAP_UNAVAILABLE;
1247                         goto error_return;
1248                 }
1249                 rs->sr_nentries++;
1250
1251                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1252                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1253                 ldap_pvt_mp_add_ulong( op->o_counters->sc_entries, 1 );
1254                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1255                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1256         }
1257
1258         Debug( LDAP_DEBUG_TRACE,
1259                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1260
1261         rc = LDAP_SUCCESS;
1262
1263 error_return:;
1264         if ( op->o_callback ) {
1265                 (void)slap_cleanup_play( op, rs );
1266         }
1267
1268         if ( e_flags ) {
1269                 slap_sl_free( e_flags, op->o_tmpmemctx );
1270         }
1271
1272         if ( rs->sr_operational_attrs ) {
1273                 attrs_free( rs->sr_operational_attrs );
1274                 rs->sr_operational_attrs = NULL;
1275         }
1276         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1277
1278         /* FIXME: I think rs->sr_type should be explicitly set to
1279          * REP_SEARCH here. That's what it was when we entered this
1280          * function. send_ldap_error may have changed it, but we
1281          * should set it back so that the cleanup functions know
1282          * what they're doing.
1283          */
1284         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1285                 && rs->sr_entry
1286                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1287         {
1288                 entry_free( rs->sr_entry );
1289                 rs->sr_entry = NULL;
1290                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1291         }
1292
1293         return( rc );
1294 }
1295
1296 int
1297 slap_send_search_reference( Operation *op, SlapReply *rs )
1298 {
1299         BerElementBuffer berbuf;
1300         BerElement      *ber = (BerElement *) &berbuf;
1301         int rc = 0;
1302         int bytes;
1303         char *edn = rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)";
1304
1305         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1306         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1307
1308         rs->sr_type = REP_SEARCHREF;
1309         if ( op->o_callback ) {
1310                 rc = slap_response_play( op, rs );
1311                 if ( rc != SLAP_CB_CONTINUE ) {
1312                         goto rel;
1313                 }
1314         }
1315
1316         Debug( LDAP_DEBUG_TRACE,
1317                 "=> send_search_reference: dn=\"%s\"\n",
1318                 edn, 0, 0 );
1319
1320         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1321                 ad_entry, NULL, ACL_READ, NULL ) )
1322         {
1323                 Debug( LDAP_DEBUG_ACL,
1324                         "send_search_reference: access to entry not allowed\n",
1325                     0, 0, 0 );
1326                 rc = 1;
1327                 goto rel;
1328         }
1329
1330         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1331                 ad_ref, NULL, ACL_READ, NULL ) )
1332         {
1333                 Debug( LDAP_DEBUG_ACL,
1334                         "send_search_reference: access "
1335                         "to reference not allowed\n",
1336                     0, 0, 0 );
1337                 rc = 1;
1338                 goto rel;
1339         }
1340
1341         if( op->o_domain_scope ) {
1342                 Debug( LDAP_DEBUG_ANY,
1343                         "send_search_reference: domainScope control in (%s)\n",
1344                         edn, 0, 0 );
1345                 rc = 0;
1346                 goto rel;
1347         }
1348
1349         if( rs->sr_ref == NULL ) {
1350                 Debug( LDAP_DEBUG_ANY,
1351                         "send_search_reference: null ref in (%s)\n",
1352                         edn, 0, 0 );
1353                 rc = 1;
1354                 goto rel;
1355         }
1356
1357         if( op->o_protocol < LDAP_VERSION3 ) {
1358                 rc = 0;
1359                 /* save the references for the result */
1360                 if( rs->sr_ref[0].bv_val != NULL ) {
1361                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1362                                 rc = LDAP_OTHER;
1363                 }
1364                 goto rel;
1365         }
1366
1367 #ifdef LDAP_CONNECTIONLESS
1368         if( op->o_conn && op->o_conn->c_is_udp ) {
1369                 ber = op->o_res_ber;
1370         } else
1371 #endif
1372         {
1373                 ber_init_w_nullc( ber, LBER_USE_DER );
1374                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1375         }
1376
1377         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1378                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1379
1380         if( rc != -1 ) {
1381                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1382         }
1383
1384         if( rc != -1 ) {
1385                 rc = ber_printf( ber, /*"{"*/ "N}" );
1386         }
1387
1388         if ( rc == -1 ) {
1389                 Debug( LDAP_DEBUG_ANY,
1390                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1391
1392 #ifdef LDAP_CONNECTIONLESS
1393                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1394 #endif
1395                 ber_free_buf( ber );
1396                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1397                 goto rel;
1398         }
1399
1400         rc = 0;
1401         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1402                 assert( rs->sr_entry != NULL );
1403                 be_entry_release_rw( op, rs->sr_entry, 0 );
1404                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1405                 rs->sr_entry = NULL;
1406         }
1407
1408 #ifdef LDAP_CONNECTIONLESS
1409         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1410 #endif
1411         bytes = send_ldap_ber( op->o_conn, ber );
1412         ber_free_buf( ber );
1413
1414         if ( bytes < 0 ) {
1415                 rc = LDAP_UNAVAILABLE;
1416         } else {
1417                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1418                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1419                 ldap_pvt_mp_add_ulong( op->o_counters->sc_refs, 1 );
1420                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1421                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1422         }
1423 #ifdef LDAP_CONNECTIONLESS
1424         }
1425 #endif
1426         if ( rs->sr_ref != NULL ) {
1427                 int     r;
1428
1429                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1430                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1431                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1432                                 0, 0 );
1433                 }
1434
1435         } else {
1436                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1437                         op->o_log_prefix, 0, 0, 0, 0 );
1438         }
1439
1440         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1441
1442 rel:
1443         if ( op->o_callback ) {
1444                 (void)slap_cleanup_play( op, rs );
1445         }
1446
1447         return rc;
1448 }
1449
1450 int
1451 str2result(
1452     char        *s,
1453     int         *code,
1454     char        **matched,
1455     char        **info )
1456 {
1457         int     rc;
1458         char    *c;
1459
1460         *code = LDAP_SUCCESS;
1461         *matched = NULL;
1462         *info = NULL;
1463
1464         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1465                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1466                     s, 0, 0 );
1467
1468                 return( -1 );
1469         }
1470
1471         rc = 0;
1472         while ( (s = strchr( s, '\n' )) != NULL ) {
1473                 *s++ = '\0';
1474                 if ( *s == '\0' ) {
1475                         break;
1476                 }
1477                 if ( (c = strchr( s, ':' )) != NULL ) {
1478                         c++;
1479                 }
1480
1481                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1482                         char    *next = NULL;
1483                         long    retcode;
1484
1485                         if ( c == NULL ) {
1486                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
1487                                     s, 0, 0 );
1488                                 rc = -1;
1489                                 continue;
1490                         }
1491
1492                         while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
1493                         if ( c[ 0 ] == '\0' ) {
1494                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
1495                                     s, 0, 0 );
1496                                 rc = -1;
1497                                 continue;
1498                         }
1499
1500                         retcode = strtol( c, &next, 10 );
1501                         if ( next == NULL || next == c ) {
1502                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
1503                                     s, 0, 0 );
1504                                 rc = -1;
1505                                 continue;
1506                         }
1507
1508                         while ( isspace( (unsigned char) next[ 0 ] ) ) next++;
1509                         if ( next[ 0 ] != '\0' ) {
1510                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
1511                                     s, 0, 0 );
1512                                 rc = -1;
1513                                 continue;
1514                         }
1515
1516                         /* FIXME: what if it's larger that max int? */
1517                         *code = (int)retcode;
1518
1519                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1520                         if ( c != NULL ) {
1521                                 *matched = c;
1522                         }
1523                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1524                         if ( c != NULL ) {
1525                                 *info = c;
1526                         }
1527                 } else {
1528                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1529                             s, 0, 0 );
1530
1531                         rc = -1;
1532                 }
1533         }
1534
1535         return( rc );
1536 }
1537
1538 int slap_read_controls(
1539         Operation *op,
1540         SlapReply *rs,
1541         Entry *e,
1542         const struct berval *oid,
1543         LDAPControl **ctrl )
1544 {
1545         int rc;
1546         struct berval bv;
1547         BerElementBuffer berbuf;
1548         BerElement *ber = (BerElement *) &berbuf;
1549         LDAPControl c;
1550         Operation myop;
1551
1552         Debug( LDAP_DEBUG_ANY, "%s slap_read_controls: (%s) %s\n",
1553                 op->o_log_prefix, oid->bv_val, e->e_dn );
1554
1555         rs->sr_entry = e;
1556         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1557                 op->o_preread_attrs : op->o_postread_attrs;
1558
1559         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1560         bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1561
1562         ber_init2( ber, &bv, LBER_USE_DER );
1563         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1564
1565         /* create new operation */
1566         myop = *op;
1567         /* FIXME: o_bd needed for ACL */
1568         myop.o_bd = op->o_bd;
1569         myop.o_res_ber = ber;
1570         myop.o_callback = NULL;
1571         myop.ors_slimit = 1;
1572
1573         rc = slap_send_search_entry( &myop, rs );
1574         if( rc ) return rc;
1575
1576         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1577
1578         if( rc == -1 ) return LDAP_OTHER;
1579
1580         c.ldctl_oid = oid->bv_val;
1581         c.ldctl_iscritical = 0;
1582
1583         if ( *ctrl == NULL ) {
1584                 /* first try */
1585                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1586         } else {
1587                 /* retry: free previous try */
1588                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1589         }
1590
1591         **ctrl = c;
1592         return LDAP_SUCCESS;
1593 }
1594
1595 /* Map API errors to protocol errors... */
1596 int
1597 slap_map_api2result( SlapReply *rs )
1598 {
1599         switch(rs->sr_err) {
1600         case LDAP_SERVER_DOWN:
1601                 return LDAP_UNAVAILABLE;
1602         case LDAP_LOCAL_ERROR:
1603                 return LDAP_OTHER;
1604         case LDAP_ENCODING_ERROR:
1605         case LDAP_DECODING_ERROR:
1606                 return LDAP_PROTOCOL_ERROR;
1607         case LDAP_TIMEOUT:
1608                 return LDAP_UNAVAILABLE;
1609         case LDAP_AUTH_UNKNOWN:
1610                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1611         case LDAP_FILTER_ERROR:
1612                 rs->sr_text = "Filter error";
1613                 return LDAP_OTHER;
1614         case LDAP_USER_CANCELLED:
1615                 rs->sr_text = "User cancelled";
1616                 return LDAP_OTHER;
1617         case LDAP_PARAM_ERROR:
1618                 return LDAP_PROTOCOL_ERROR;
1619         case LDAP_NO_MEMORY:
1620                 return LDAP_OTHER;
1621         case LDAP_CONNECT_ERROR:
1622                 return LDAP_UNAVAILABLE;
1623         case LDAP_NOT_SUPPORTED:
1624                 return LDAP_UNWILLING_TO_PERFORM;
1625         case LDAP_CONTROL_NOT_FOUND:
1626                 return LDAP_PROTOCOL_ERROR;
1627         case LDAP_NO_RESULTS_RETURNED:
1628                 return LDAP_NO_SUCH_OBJECT;
1629         case LDAP_MORE_RESULTS_TO_RETURN:
1630                 rs->sr_text = "More results to return";
1631                 return LDAP_OTHER;
1632         case LDAP_CLIENT_LOOP:
1633         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1634                 return LDAP_LOOP_DETECT;
1635         default:
1636                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1637                 return rs->sr_err;
1638         }
1639 }
1640
1641
1642 slap_mask_t
1643 slap_attr_flags( AttributeName *an )
1644 {
1645         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1646
1647         if ( an == NULL ) {
1648                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1649
1650         } else {
1651                 flags |= an_find( an, &AllOper )
1652                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1653                 flags |= an_find( an, &AllUser )
1654                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1655         }
1656
1657         return flags;
1658 }
1659