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         Operation *op,
 137         BerElement *ber )
 138 {
 139         Connection *conn = op->o_conn;
 140         ber_len_t bytes;
 141         long ret = 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 (( op->o_abandon && !op->o_cancel ) || !connection_valid( conn ) ||
 148                 conn->c_writers < 0 ) {
 149                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 150                 return 0;
 151         }
 152
 153         conn->c_writers++;
 154
 155         while ( conn->c_writers > 0 && conn->c_writing ) {
 156                 ldap_pvt_thread_cond_wait( &conn->c_write1_cv, &conn->c_write1_mutex );
 157         }
 158
 159         /* connection was closed under us */
 160         if ( conn->c_writers < 0 ) {
 161                 /* we're the last waiter, let the closer continue */
 162                 if ( conn->c_writers == -1 )
 163                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 164                 conn->c_writers++;
 165                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 166                 return 0;
 167         }
 168
 169         /* Our turn */
 170         conn->c_writing = 1;
 171
 172         /* write the pdu */
 173         while( 1 ) {
 174                 int err;
 175
 176                 /* lock the connection */
 177                 if ( ldap_pvt_thread_mutex_trylock( &conn->c_mutex )) {
 178                         if ( !connection_valid(conn)) {
 179                                 ret = 0;
 180                                 break;
 181                         }
 182                         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 183                         ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 184                         if ( conn->c_writers < 0 ) {
 185                                 ret = 0;
 186                                 break;
 187                         }
 188                         continue;
 189                 }
 190
 191                 if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) {
 192                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 193                         ret = bytes;
 194                         break;
 195                 }
 196
 197                 err = sock_errno();
 198
 199                 /*
 200                  * we got an error.  if it's ewouldblock, we need to
 201                  * wait on the socket being writable.  otherwise, figure
 202                  * it's a hard error and return.
 203                  */
 204
 205                 Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n",
 206                     err, sock_errstr(err), 0 );
 207
 208                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 209                         conn->c_writers--;
 210                         conn->c_writing = 0;
 211                         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 212                         connection_closing( conn, "connection lost on write" );
 213
 214                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 215                         return -1;
 216                 }
 217
 218                 /* wait for socket to be write-ready */
 219                 ldap_pvt_thread_mutex_lock( &conn->c_write2_mutex );
 220                 conn->c_writewaiter = 1;
 221                 slapd_set_write( conn->c_sd, 2 );
 222
 223                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 224                 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 225                 ldap_pvt_thread_cond_wait( &conn->c_write2_cv, &conn->c_write2_mutex );
 226                 conn->c_writewaiter = 0;
 227                 ldap_pvt_thread_mutex_unlock( &conn->c_write2_mutex );
 228                 ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 229                 if ( conn->c_writers < 0 ) {
 230                         ret = 0;
 231                         break;
 232                 }
 233         }
 234
 235         conn->c_writing = 0;
 236         if ( conn->c_writers < 0 ) {
 237                 conn->c_writers++;
 238                 if ( !conn->c_writers )
 239                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 240         } else {
 241                 conn->c_writers--;
 242                 ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 243         }
 244         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 245
 246         return ret;
 247 }
 248
 249 static int
 250 send_ldap_control( BerElement *ber, LDAPControl *c )
 251 {
 252         int rc;
 253
 254         assert( c != NULL );
 255
 256         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 257
 258         if( c->ldctl_iscritical ) {
 259                 rc = ber_printf( ber, "b",
 260                         (ber_int_t) c->ldctl_iscritical ) ;
 261                 if( rc == -1 ) return rc;
 262         }
 263
 264         if( c->ldctl_value.bv_val != NULL ) {
 265                 rc = ber_printf( ber, "O", &c->ldctl_value );
 266                 if( rc == -1 ) return rc;
 267         }
 268
 269         rc = ber_printf( ber, /*{*/"N}" );
 270         if( rc == -1 ) return rc;
 271
 272         return 0;
 273 }
 274
 275 static int
 276 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 277 {
 278         int rc;
 279
 280         if( c == NULL )
 281                 return 0;
 282
 283         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 284         if( rc == -1 ) return rc;
 285
 286         for( ; *c != NULL; c++) {
 287                 rc = send_ldap_control( ber, *c );
 288                 if( rc == -1 ) return rc;
 289         }
 290
 291 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 292         /* this is a hack to avoid having to modify op->s_ctrls */
 293         if( o->o_sortedresults ) {
 294                 BerElementBuffer berbuf;
 295                 BerElement *sber = (BerElement *) &berbuf;
 296                 LDAPControl sorted;
 297                 BER_BVZERO( &sorted.ldctl_value );
 298                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 299                 sorted.ldctl_iscritical = 0;
 300
 301                 ber_init2( sber, NULL, LBER_USE_DER );
 302
 303                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 304
 305                 if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
 306                         return -1;
 307                 }
 308
 309                 (void) ber_free_buf( ber );
 310
 311                 rc = send_ldap_control( ber, &sorted );
 312                 if( rc == -1 ) return rc;
 313         }
 314 #endif
 315
 316         rc = ber_printf( ber, /*{*/"N}" );
 317
 318         return rc;
 319 }
 320
 321 /*
 322  * slap_response_play()
 323  *
 324  * plays the callback list; rationale: a callback can
 325  *   - remove itself from the list, by setting op->o_callback = NULL;
 326  *     malloc()'ed callbacks should free themselves from inside the
 327  *     sc_response() function.
 328  *   - replace itself with another (list of) callback(s), by setting
 329  *     op->o_callback = a new (list of) callback(s); in this case, it
 330  *     is the callback's responsibility to to append existing subsequent
 331  *     callbacks to the end of the list that is passed to the sc_response()
 332  *     function.
 333  *   - modify the list of subsequent callbacks by modifying the value
 334  *     of the sc_next field from inside the sc_response() function; this
 335  *     case does not require any handling from inside slap_response_play()
 336  *
 337  * To stop execution of the playlist, the sc_response() function must return
 338  * a value different from SLAP_SC_CONTINUE.
 339  *
 340  * The same applies to slap_cleanup_play(); only, there is no means to stop
 341  * execution of the playlist, since all cleanup functions must be called.
 342  */
 343 static int
 344 slap_response_play(
 345         Operation *op,
 346         SlapReply *rs )
 347 {
 348         int rc;
 349
 350         slap_callback   *sc = op->o_callback, **scp;
 351
 352         rc = SLAP_CB_CONTINUE;
 353         for ( scp = &sc; *scp; ) {
 354                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 355
 356                 op->o_callback = *scp;
 357                 if ( op->o_callback->sc_response ) {
 358                         rc = op->o_callback->sc_response( op, rs );
 359                         if ( op->o_callback == NULL ) {
 360                                 /* the callback has been removed;
 361                                  * repair the list */
 362                                 *scp = sc_next;
 363                                 sc_nextp = scp;
 364
 365                         } else if ( op->o_callback != *scp ) {
 366                                 /* a new callback has been inserted
 367                                  * in place of the existing one; repair the list */
 368                                 *scp = op->o_callback;
 369                                 sc_nextp = scp;
 370                         }
 371                         if ( rc != SLAP_CB_CONTINUE ) break;
 372                 }
 373                 scp = sc_nextp;
 374         }
 375
 376         op->o_callback = sc;
 377         return rc;
 378 }
 379
 380 static int
 381 slap_cleanup_play(
 382         Operation *op,
 383         SlapReply *rs )
 384 {
 385         slap_callback   *sc = op->o_callback, **scp;
 386
 387         for ( scp = &sc; *scp; ) {
 388                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 389
 390                 op->o_callback = *scp;
 391                 if ( op->o_callback->sc_cleanup ) {
 392                         (void)op->o_callback->sc_cleanup( op, rs );
 393                         if ( op->o_callback == NULL ) {
 394                                 /* the callback has been removed;
 395                                  * repair the list */
 396                                 *scp = sc_next;
 397                                 sc_nextp = scp;
 398
 399                         } else if ( op->o_callback != *scp ) {
 400                                 /* a new callback has been inserted
 401                                  * after the existing one; repair the list */
 402                                 /* a new callback has been inserted
 403                                  * in place of the existing one; repair the list */
 404                                 *scp = op->o_callback;
 405                                 sc_nextp = scp;
 406                         }
 407                         /* don't care about the result; do all cleanup */
 408                 }
 409                 scp = sc_nextp;
 410         }
 411
 412         op->o_callback = sc;
 413         return LDAP_SUCCESS;
 414 }
 415
 416 static int
 417 send_ldap_response(
 418         Operation *op,
 419         SlapReply *rs )
 420 {
 421         BerElementBuffer berbuf;
 422         BerElement      *ber = (BerElement *) &berbuf;
 423         int             rc = LDAP_SUCCESS;
 424         long    bytes;
 425
 426         if (( rs->sr_err == SLAPD_ABANDON || op->o_abandon ) && !op->o_cancel ) {
 427                 rc = SLAPD_ABANDON;
 428                 goto clean2;
 429         }
 430
 431         if ( op->o_callback ) {
 432                 rc = slap_response_play( op, rs );
 433                 if ( rc != SLAP_CB_CONTINUE ) {
 434                         goto clean2;
 435                 }
 436         }
 437
 438 #ifdef LDAP_CONNECTIONLESS
 439         if (op->o_conn && op->o_conn->c_is_udp)
 440                 ber = op->o_res_ber;
 441         else
 442 #endif
 443         {
 444                 ber_init_w_nullc( ber, LBER_USE_DER );
 445                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 446         }
 447
 448         rc = rs->sr_err;
 449         if ( rc == SLAPD_ABANDON && op->o_cancel )
 450                 rc = LDAP_CANCELLED;
 451
 452         Debug( LDAP_DEBUG_TRACE,
 453                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 454                 rs->sr_msgid, rs->sr_tag, rc );
 455
 456         if( rs->sr_ref ) {
 457                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 458                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 459                         NULL, NULL );
 460         }
 461
 462 #ifdef LDAP_CONNECTIONLESS
 463         if (op->o_conn && op->o_conn->c_is_udp &&
 464                 op->o_protocol == LDAP_VERSION2 )
 465         {
 466                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 467                         rs->sr_tag, rc,
 468                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 469                 rs->sr_text == NULL ? "" : rs->sr_text );
 470         } else
 471 #endif
 472         if ( rs->sr_type == REP_INTERMEDIATE ) {
 473             rc = ber_printf( ber, "{it{" /*"}}"*/,
 474                         rs->sr_msgid, rs->sr_tag );
 475
 476         } else {
 477             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 478                 rs->sr_msgid, rs->sr_tag, rc,
 479                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 480                 rs->sr_text == NULL ? "" : rs->sr_text );
 481         }
 482
 483         if( rc != -1 ) {
 484                 if ( rs->sr_ref != NULL ) {
 485                         assert( rs->sr_err == LDAP_REFERRAL );
 486                         rc = ber_printf( ber, "t{W}",
 487                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 488                 } else {
 489                         assert( rs->sr_err != LDAP_REFERRAL );
 490                 }
 491         }
 492
 493         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 494                 rc = ber_printf( ber, "tO",
 495                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 496         }
 497
 498         if( rc != -1 &&
 499                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 500         {
 501                 if ( rs->sr_rspoid != NULL ) {
 502                         rc = ber_printf( ber, "ts",
 503                                 rs->sr_type == REP_EXTENDED
 504                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 505                                 rs->sr_rspoid );
 506                 }
 507                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 508                         rc = ber_printf( ber, "tO",
 509                                 rs->sr_type == REP_EXTENDED
 510                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 511                                 rs->sr_rspdata );
 512                 }
 513         }
 514
 515         if( rc != -1 ) {
 516                 rc = ber_printf( ber, /*"{"*/ "N}" );
 517         }
 518
 519         if( rc != -1 ) {
 520                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 521         }
 522
 523         if( rc != -1 ) {
 524                 rc = ber_printf( ber, /*"{"*/ "N}" );
 525         }
 526
 527 #ifdef LDAP_CONNECTIONLESS
 528         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 529                 && rc != -1 )
 530         {
 531                 rc = ber_printf( ber, /*"{"*/ "N}" );
 532         }
 533 #endif
 534
 535         if ( rc == -1 ) {
 536                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 537
 538 #ifdef LDAP_CONNECTIONLESS
 539                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 540 #endif
 541                 {
 542                         ber_free_buf( ber );
 543                 }
 544                 goto cleanup;
 545         }
 546
 547         /* send BER */
 548         bytes = send_ldap_ber( op, ber );
 549 #ifdef LDAP_CONNECTIONLESS
 550         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 551 #endif
 552         {
 553                 ber_free_buf( ber );
 554         }
 555
 556         if ( bytes < 0 ) {
 557                 Debug( LDAP_DEBUG_ANY,
 558                         "send_ldap_response: ber write failed\n",
 559                         0, 0, 0 );
 560
 561                 goto cleanup;
 562         }
 563
 564         ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
 565         ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
 566         ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
 567         ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
 568
 569 cleanup:;
 570         /* Tell caller that we did this for real, as opposed to being
 571          * overridden by a callback
 572          */
 573         rc = SLAP_CB_CONTINUE;
 574
 575 clean2:;
 576         if ( op->o_callback ) {
 577                 (void)slap_cleanup_play( op, rs );
 578         }
 579
 580         if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 581                 rs->sr_flags ^= REP_MATCHED_MUSTBEFREED; /* paranoia */
 582                 if ( rs->sr_matched ) {
 583                         free( (char *)rs->sr_matched );
 584                         rs->sr_matched = NULL;
 585                 }
 586         }
 587
 588         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 589                 rs->sr_flags ^= REP_REF_MUSTBEFREED; /* paranoia */
 590                 if ( rs->sr_ref ) {
 591                         ber_bvarray_free( rs->sr_ref );
 592                         rs->sr_ref = NULL;
 593                 }
 594         }
 595
 596         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
 597                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
 598                 if ( rs->sr_ctrls ) {
 599                         slap_free_ctrls( op, rs->sr_ctrls );
 600                         rs->sr_ctrls = NULL;
 601                 }
 602         }
 603
 604         return rc;
 605 }
 606
 607
 608 void
 609 send_ldap_disconnect( Operation *op, SlapReply *rs )
 610 {
 611 #define LDAP_UNSOLICITED_ERROR(e) \
 612         (  (e) == LDAP_PROTOCOL_ERROR \
 613         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 614         || (e) == LDAP_UNAVAILABLE )
 615
 616         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 617
 618         rs->sr_type = REP_EXTENDED;
 619
 620         Debug( LDAP_DEBUG_TRACE,
 621                 "send_ldap_disconnect %d:%s\n",
 622                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 623
 624         if ( op->o_protocol < LDAP_VERSION3 ) {
 625                 rs->sr_rspoid = NULL;
 626                 rs->sr_tag = slap_req2res( op->o_tag );
 627                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 628
 629         } else {
 630                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 631                 rs->sr_tag = LDAP_RES_EXTENDED;
 632                 rs->sr_msgid = LDAP_RES_UNSOLICITED;
 633         }
 634
 635         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 636                 Statslog( LDAP_DEBUG_STATS,
 637                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 638                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 639                         rs->sr_text ? rs->sr_text : "", 0 );
 640         }
 641 }
 642
 643 void
 644 slap_send_ldap_result( Operation *op, SlapReply *rs )
 645 {
 646         char *tmp = NULL;
 647         const char *otext = rs->sr_text;
 648         BerVarray oref = rs->sr_ref;
 649
 650         rs->sr_type = REP_RESULT;
 651
 652         /* Propagate Abandons so that cleanup callbacks can be processed */
 653         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
 654                 goto abandon;
 655
 656         assert( !LDAP_API_ERROR( rs->sr_err ) );
 657
 658         Debug( LDAP_DEBUG_TRACE,
 659                 "send_ldap_result: %s p=%d\n",
 660                 op->o_log_prefix, op->o_protocol, 0 );
 661
 662         Debug( LDAP_DEBUG_ARGS,
 663                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 664                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 665                 rs->sr_text ? rs->sr_text : "" );
 666
 667
 668         if( rs->sr_ref ) {
 669                 Debug( LDAP_DEBUG_ARGS,
 670                         "send_ldap_result: referral=\"%s\"\n",
 671                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 672                         NULL, NULL );
 673         }
 674
 675         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 676
 677         if ( rs->sr_err == LDAP_REFERRAL ) {
 678                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 679
 680                 if( rs->sr_ref == NULL ) {
 681                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 682                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 683                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 684                 }
 685         }
 686
 687         if ( op->o_protocol < LDAP_VERSION3 ) {
 688                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 689                 rs->sr_text = tmp;
 690                 rs->sr_ref = NULL;
 691         }
 692
 693 abandon:
 694         rs->sr_tag = slap_req2res( op->o_tag );
 695         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 696
 697         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 698                 if ( rs->sr_ref == NULL ) {
 699                         rs->sr_flags ^= REP_REF_MUSTBEFREED;
 700                         ber_bvarray_free( oref );
 701                 }
 702                 oref = NULL; /* send_ldap_response() will free rs->sr_ref if != NULL */
 703         }
 704
 705         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 706                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 707                         Statslog( LDAP_DEBUG_STATS,
 708                                 "%s SEARCH RESULT tag=%lu err=%d nentries=%d text=%s\n",
 709                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 710                                 rs->sr_nentries, rs->sr_text ? rs->sr_text : "" );
 711                 } else {
 712                         Statslog( LDAP_DEBUG_STATS,
 713                                 "%s RESULT tag=%lu err=%d text=%s\n",
 714                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 715                                 rs->sr_text ? rs->sr_text : "", 0 );
 716                 }
 717         }
 718
 719         if( tmp != NULL ) ch_free(tmp);
 720         rs->sr_text = otext;
 721         rs->sr_ref = oref;
 722 }
 723
 724 void
 725 send_ldap_sasl( Operation *op, SlapReply *rs )
 726 {
 727         rs->sr_type = REP_SASL;
 728         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 729                 rs->sr_err,
 730                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 731
 732         rs->sr_tag = slap_req2res( op->o_tag );
 733         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 734
 735         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 736                 Statslog( LDAP_DEBUG_STATS,
 737                         "%s RESULT tag=%lu err=%d text=%s\n",
 738                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 739                         rs->sr_text ? rs->sr_text : "", 0 );
 740         }
 741 }
 742
 743 void
 744 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 745 {
 746         rs->sr_type = REP_EXTENDED;
 747
 748         Debug( LDAP_DEBUG_TRACE,
 749                 "send_ldap_extended: 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
 754         rs->sr_tag = slap_req2res( op->o_tag );
 755         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 756
 757         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 758                 Statslog( LDAP_DEBUG_STATS,
 759                         "%s RESULT oid=%s err=%d text=%s\n",
 760                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 761                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 762         }
 763 }
 764
 765 void
 766 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 767 {
 768         rs->sr_type = REP_INTERMEDIATE;
 769         Debug( LDAP_DEBUG_TRACE,
 770                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 771                 rs->sr_err,
 772                 rs->sr_rspoid ? rs->sr_rspoid : "",
 773                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 774         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 775         rs->sr_msgid = op->o_msgid;
 776         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 777                 Statslog( LDAP_DEBUG_STATS2,
 778                         "%s INTERM oid=%s\n",
 779                         op->o_log_prefix,
 780                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 781         }
 782 }
 783
 784 /*
 785  * returns:
 786  *
 787  * LDAP_SUCCESS                 entry sent
 788  * LDAP_OTHER                   entry not sent (other)
 789  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 790  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 791  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 792  */
 793
 794 int
 795 slap_send_search_entry( Operation *op, SlapReply *rs )
 796 {
 797         BerElementBuffer berbuf;
 798         BerElement      *ber = (BerElement *) &berbuf;
 799         Attribute       *a;
 800         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 801         int             userattrs;
 802         AccessControlState acl_state = ACL_STATE_INIT;
 803         int                      attrsonly;
 804         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 805
 806         /* a_flags: array of flags telling if the i-th element will be
 807          *          returned or filtered out
 808          * e_flags: array of a_flags
 809          */
 810         char **e_flags = NULL;
 811
 812         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 813                 return LDAP_SIZELIMIT_EXCEEDED;
 814         }
 815
 816         /* Every 64 entries, check for thread pool pause */
 817         if ( ( ( rs->sr_nentries & 0x3f ) == 0x3f ) &&
 818                 ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 )
 819         {
 820                 return LDAP_BUSY;
 821         }
 822
 823         rs->sr_type = REP_SEARCH;
 824
 825         /* eventually will loop through generated operational attribute types
 826          * currently implemented types include:
 827          *      entryDN, subschemaSubentry, and hasSubordinates */
 828         /* NOTE: moved before overlays callback circling because
 829          * they may modify entry and other stuff in rs */
 830         /* check for special all operational attributes ("+") type */
 831         /* FIXME: maybe we could set this flag at the operation level;
 832          * however, in principle the caller of send_search_entry() may
 833          * change the attribute list at each call */
 834         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 835
 836         rc = backend_operational( op, rs );
 837         if ( rc ) {
 838                 goto error_return;
 839         }
 840
 841         if ( op->o_callback ) {
 842                 rc = slap_response_play( op, rs );
 843                 if ( rc != SLAP_CB_CONTINUE ) {
 844                         goto error_return;
 845                 }
 846         }
 847
 848         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 849                 op->o_connid, rs->sr_entry->e_name.bv_val,
 850                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 851
 852         attrsonly = op->ors_attrsonly;
 853
 854         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 855                 Debug( LDAP_DEBUG_ACL,
 856                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 857                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 858
 859                 rc = LDAP_INSUFFICIENT_ACCESS;
 860                 goto error_return;
 861         }
 862
 863         if ( op->o_res_ber ) {
 864                 /* read back control or LDAP_CONNECTIONLESS */
 865             ber = op->o_res_ber;
 866         } else {
 867                 struct berval   bv;
 868
 869                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 870                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 871
 872                 ber_init2( ber, &bv, LBER_USE_DER );
 873                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 874         }
 875
 876 #ifdef LDAP_CONNECTIONLESS
 877         if ( op->o_conn && op->o_conn->c_is_udp ) {
 878                 /* CONNECTIONLESS */
 879                 if ( op->o_protocol == LDAP_VERSION2 ) {
 880                 rc = ber_printf(ber, "t{O{" /*}}*/,
 881                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 882                 } else {
 883                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 884                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 885                 }
 886         } else
 887 #endif
 888         if ( op->o_res_ber ) {
 889                 /* read back control */
 890             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 891         } else {
 892             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 893                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 894         }
 895
 896         if ( rc == -1 ) {
 897                 Debug( LDAP_DEBUG_ANY,
 898                         "send_search_entry: conn %lu  ber_printf failed\n",
 899                         op->o_connid, 0, 0 );
 900
 901                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 902                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 903                 rc = rs->sr_err;
 904                 goto error_return;
 905         }
 906
 907         /* check for special all user attributes ("*") type */
 908         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 909
 910         /* create an array of arrays of flags. Each flag corresponds
 911          * to particular value of attribute and equals 1 if value matches
 912          * to ValuesReturnFilter or 0 if not
 913          */
 914         if ( op->o_vrFilter != NULL ) {
 915                 int     k = 0;
 916                 size_t  size;
 917
 918                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 919                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 920                 }
 921
 922                 size = i * sizeof(char *) + k;
 923                 if ( size > 0 ) {
 924                         char    *a_flags;
 925                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 926                         if( e_flags == NULL ) {
 927                         Debug( LDAP_DEBUG_ANY,
 928                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 929                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 930                                 ber_free( ber, 1 );
 931
 932                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 933                                 goto error_return;
 934                         }
 935                         a_flags = (char *)(e_flags + i);
 936                         memset( a_flags, 0, k );
 937                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 938                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 939                                 e_flags[i] = a_flags;
 940                                 a_flags += j;
 941                         }
 942
 943                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 944                         if ( rc == -1 ) {
 945                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 946                                         "conn %lu matched values filtering failed\n",
 947                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 948                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 949                                 send_ldap_error( op, rs, LDAP_OTHER,
 950                                         "matched values filtering error" );
 951                                 rc = rs->sr_err;
 952                                 goto error_return;
 953                         }
 954                 }
 955         }
 956
 957         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 958                 AttributeDescription *desc = a->a_desc;
 959                 int finish = 0;
 960
 961                 if ( rs->sr_attrs == NULL ) {
 962                         /* all user attrs request, skip operational attributes */
 963                         if( is_at_operational( desc->ad_type ) ) {
 964                                 continue;
 965                         }
 966
 967                 } else {
 968                         /* specific attrs requested */
 969                         if ( is_at_operational( desc->ad_type ) ) {
 970                                 /* if not explicitly requested */
 971                                 if ( !ad_inlist( desc, rs->sr_attrs )) {
 972                                         /* if not all op attrs requested, skip */
 973                                         if ( !SLAP_OPATTRS( rs->sr_attr_flags ))
 974                                                 continue;
 975                                         /* if DSA-specific and replicating, skip */
 976                                         if ( op->o_sync != SLAP_CONTROL_NONE &&
 977                                                 desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
 978                                                 continue;
 979                                 }
 980                         } else {
 981                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 982                                         continue;
 983                                 }
 984                         }
 985                 }
 986
 987                 if ( attrsonly ) {
 988                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 989                                 ACL_READ, &acl_state ) )
 990                         {
 991                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 992                                         "conn %lu access to attribute %s not allowed\n",
 993                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 994                                 continue;
 995                         }
 996
 997                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 998                                 Debug( LDAP_DEBUG_ANY,
 999                                         "send_search_entry: conn %lu  ber_printf failed\n",
1000                                         op->o_connid, 0, 0 );
1001
1002                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1003                                 send_ldap_error( op, rs, LDAP_OTHER,
1004                                         "encoding description error");
1005                                 rc = rs->sr_err;
1006                                 goto error_return;
1007                         }
1008                         finish = 1;
1009
1010                 } else {
1011                         int first = 1;
1012                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
1013                                 if ( ! access_allowed( op, rs->sr_entry,
1014                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
1015                                 {
1016                                         Debug( LDAP_DEBUG_ACL,
1017                                                 "send_search_entry: conn %lu "
1018                                                 "access to attribute %s, value #%d not allowed\n",
1019                                                 op->o_connid, desc->ad_cname.bv_val, i );
1020
1021                                         continue;
1022                                 }
1023
1024                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1025                                         continue;
1026                                 }
1027
1028                                 if ( first ) {
1029                                         first = 0;
1030                                         finish = 1;
1031                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
1032                                                 Debug( LDAP_DEBUG_ANY,
1033                                                         "send_search_entry: conn %lu  ber_printf failed\n",
1034                                                         op->o_connid, 0, 0 );
1035
1036                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1037                                                 send_ldap_error( op, rs, LDAP_OTHER,
1038                                                         "encoding description error");
1039                                                 rc = rs->sr_err;
1040                                                 goto error_return;
1041                                         }
1042                                 }
1043                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1044                                         Debug( LDAP_DEBUG_ANY,
1045                                                 "send_search_entry: conn %lu  "
1046                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
1047
1048                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1049                                         send_ldap_error( op, rs, LDAP_OTHER,
1050                                                 "encoding values error" );
1051                                         rc = rs->sr_err;
1052                                         goto error_return;
1053                                 }
1054                         }
1055                 }
1056
1057                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1058                         Debug( LDAP_DEBUG_ANY,
1059                                 "send_search_entry: conn %lu ber_printf failed\n",
1060                                 op->o_connid, 0, 0 );
1061
1062                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1063                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1064                         rc = rs->sr_err;
1065                         goto error_return;
1066                 }
1067         }
1068
1069         /* NOTE: moved before overlays callback circling because
1070          * they may modify entry and other stuff in rs */
1071         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
1072                 int     k = 0;
1073                 size_t  size;
1074
1075                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1076                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1077                 }
1078
1079                 size = i * sizeof(char *) + k;
1080                 if ( size > 0 ) {
1081                         char    *a_flags, **tmp;
1082
1083                         /*
1084                          * Reuse previous memory - we likely need less space
1085                          * for operational attributes
1086                          */
1087                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
1088                                 op->o_tmpmemctx );
1089                         if ( tmp == NULL ) {
1090                                 Debug( LDAP_DEBUG_ANY,
1091                                         "send_search_entry: conn %lu "
1092                                         "not enough memory "
1093                                         "for matched values filtering\n",
1094                                         op->o_connid, 0, 0 );
1095                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1096                                 send_ldap_error( op, rs, LDAP_OTHER,
1097                                         "not enough memory for matched values filtering" );
1098                                 goto error_return;
1099                         }
1100                         e_flags = tmp;
1101                         a_flags = (char *)(e_flags + i);
1102                         memset( a_flags, 0, k );
1103                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1104                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1105                                 e_flags[i] = a_flags;
1106                                 a_flags += j;
1107                         }
1108                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
1109
1110                         if ( rc == -1 ) {
1111                                 Debug( LDAP_DEBUG_ANY,
1112                                         "send_search_entry: conn %lu "
1113                                         "matched values filtering failed\n",
1114                                         op->o_connid ? op->o_connid : 0, 0, 0);
1115                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1116                                 send_ldap_error( op, rs, LDAP_OTHER,
1117                                         "matched values filtering error" );
1118                                 rc = rs->sr_err;
1119                                 goto error_return;
1120                         }
1121                 }
1122         }
1123
1124         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1125                 AttributeDescription *desc = a->a_desc;
1126
1127                 if ( rs->sr_attrs == NULL ) {
1128                         /* all user attrs request, skip operational attributes */
1129                         if( is_at_operational( desc->ad_type ) ) {
1130                                 continue;
1131                         }
1132
1133                 } else {
1134                         /* specific attrs requested */
1135                         if( is_at_operational( desc->ad_type ) ) {
1136                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1137                                         !ad_inlist( desc, rs->sr_attrs ) )
1138                                 {
1139                                         continue;
1140                                 }
1141                         } else {
1142                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1143                                         continue;
1144                                 }
1145                         }
1146                 }
1147
1148                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1149                         ACL_READ, &acl_state ) )
1150                 {
1151                         Debug( LDAP_DEBUG_ACL,
1152                                 "send_search_entry: conn %lu "
1153                                 "access to attribute %s not allowed\n",
1154                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1155
1156                         continue;
1157                 }
1158
1159                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1160                 if ( rc == -1 ) {
1161                         Debug( LDAP_DEBUG_ANY,
1162                                 "send_search_entry: conn %lu  "
1163                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1164
1165                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1166                         send_ldap_error( op, rs, LDAP_OTHER,
1167                                 "encoding description error" );
1168                         rc = rs->sr_err;
1169                         goto error_return;
1170                 }
1171
1172                 if ( ! attrsonly ) {
1173                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1174                                 if ( ! access_allowed( op, rs->sr_entry,
1175                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1176                                 {
1177                                         Debug( LDAP_DEBUG_ACL,
1178                                                 "send_search_entry: conn %lu "
1179                                                 "access to %s, value %d not allowed\n",
1180                                                 op->o_connid, desc->ad_cname.bv_val, i );
1181
1182                                         continue;
1183                                 }
1184
1185                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1186                                         continue;
1187                                 }
1188
1189                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1190                                         Debug( LDAP_DEBUG_ANY,
1191                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1192                                                 op->o_connid, 0, 0 );
1193
1194                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1195                                         send_ldap_error( op, rs, LDAP_OTHER,
1196                                                 "encoding values error" );
1197                                         rc = rs->sr_err;
1198                                         goto error_return;
1199                                 }
1200                         }
1201                 }
1202
1203                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1204                         Debug( LDAP_DEBUG_ANY,
1205                                 "send_search_entry: conn %lu  ber_printf failed\n",
1206                                 op->o_connid, 0, 0 );
1207
1208                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1209                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1210                         rc = rs->sr_err;
1211                         goto error_return;
1212                 }
1213         }
1214
1215         /* free e_flags */
1216         if ( e_flags ) {
1217                 slap_sl_free( e_flags, op->o_tmpmemctx );
1218                 e_flags = NULL;
1219         }
1220
1221         rc = ber_printf( ber, /*{{*/ "}N}" );
1222
1223         if( rc != -1 ) {
1224                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1225         }
1226
1227         if( rc != -1 ) {
1228 #ifdef LDAP_CONNECTIONLESS
1229                 if( op->o_conn && op->o_conn->c_is_udp ) {
1230                         if ( op->o_protocol != LDAP_VERSION2 ) {
1231                                 rc = ber_printf( ber, /*{*/ "N}" );
1232                         }
1233                 } else
1234 #endif
1235                 if ( op->o_res_ber == NULL ) {
1236                         rc = ber_printf( ber, /*{*/ "N}" );
1237                 }
1238         }
1239
1240         if ( rc == -1 ) {
1241                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1242
1243                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1244                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1245                 rc = rs->sr_err;
1246                 goto error_return;
1247         }
1248
1249         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1250             op->o_log_prefix, rs->sr_entry->e_nname.bv_val, 0, 0, 0 );
1251
1252         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1253                 be_entry_release_rw( op, rs->sr_entry, 0 );
1254                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1255                 rs->sr_entry = NULL;
1256         }
1257
1258         if ( op->o_res_ber == NULL ) {
1259                 bytes = send_ldap_ber( op, ber );
1260                 ber_free_buf( ber );
1261
1262                 if ( bytes < 0 ) {
1263                         Debug( LDAP_DEBUG_ANY,
1264                                 "send_search_entry: conn %lu  ber write failed.\n",
1265                                 op->o_connid, 0, 0 );
1266
1267                         rc = LDAP_UNAVAILABLE;
1268                         goto error_return;
1269                 }
1270                 rs->sr_nentries++;
1271
1272                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1273                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1274                 ldap_pvt_mp_add_ulong( op->o_counters->sc_entries, 1 );
1275                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1276                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1277         }
1278
1279         Debug( LDAP_DEBUG_TRACE,
1280                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1281
1282         rc = LDAP_SUCCESS;
1283
1284 error_return:;
1285         if ( op->o_callback ) {
1286                 (void)slap_cleanup_play( op, rs );
1287         }
1288
1289         if ( e_flags ) {
1290                 slap_sl_free( e_flags, op->o_tmpmemctx );
1291         }
1292
1293         if ( rs->sr_operational_attrs ) {
1294                 attrs_free( rs->sr_operational_attrs );
1295                 rs->sr_operational_attrs = NULL;
1296         }
1297         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1298
1299         /* FIXME: I think rs->sr_type should be explicitly set to
1300          * REP_SEARCH here. That's what it was when we entered this
1301          * function. send_ldap_error may have changed it, but we
1302          * should set it back so that the cleanup functions know
1303          * what they're doing.
1304          */
1305         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1306                 && rs->sr_entry
1307                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1308         {
1309                 entry_free( rs->sr_entry );
1310                 rs->sr_entry = NULL;
1311                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1312         }
1313
1314         return( rc );
1315 }
1316
1317 int
1318 slap_send_search_reference( Operation *op, SlapReply *rs )
1319 {
1320         BerElementBuffer berbuf;
1321         BerElement      *ber = (BerElement *) &berbuf;
1322         int rc = 0;
1323         int bytes;
1324         char *edn = rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)";
1325
1326         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1327         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1328
1329         rs->sr_type = REP_SEARCHREF;
1330         if ( op->o_callback ) {
1331                 rc = slap_response_play( op, rs );
1332                 if ( rc != SLAP_CB_CONTINUE ) {
1333                         goto rel;
1334                 }
1335         }
1336
1337         Debug( LDAP_DEBUG_TRACE,
1338                 "=> send_search_reference: dn=\"%s\"\n",
1339                 edn, 0, 0 );
1340
1341         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1342                 ad_entry, NULL, ACL_READ, NULL ) )
1343         {
1344                 Debug( LDAP_DEBUG_ACL,
1345                         "send_search_reference: access to entry not allowed\n",
1346                     0, 0, 0 );
1347                 rc = 1;
1348                 goto rel;
1349         }
1350
1351         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1352                 ad_ref, NULL, ACL_READ, NULL ) )
1353         {
1354                 Debug( LDAP_DEBUG_ACL,
1355                         "send_search_reference: access "
1356                         "to reference not allowed\n",
1357                     0, 0, 0 );
1358                 rc = 1;
1359                 goto rel;
1360         }
1361
1362         if( op->o_domain_scope ) {
1363                 Debug( LDAP_DEBUG_ANY,
1364                         "send_search_reference: domainScope control in (%s)\n",
1365                         edn, 0, 0 );
1366                 rc = 0;
1367                 goto rel;
1368         }
1369
1370         if( rs->sr_ref == NULL ) {
1371                 Debug( LDAP_DEBUG_ANY,
1372                         "send_search_reference: null ref in (%s)\n",
1373                         edn, 0, 0 );
1374                 rc = 1;
1375                 goto rel;
1376         }
1377
1378         if( op->o_protocol < LDAP_VERSION3 ) {
1379                 rc = 0;
1380                 /* save the references for the result */
1381                 if( rs->sr_ref[0].bv_val != NULL ) {
1382                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1383                                 rc = LDAP_OTHER;
1384                 }
1385                 goto rel;
1386         }
1387
1388 #ifdef LDAP_CONNECTIONLESS
1389         if( op->o_conn && op->o_conn->c_is_udp ) {
1390                 ber = op->o_res_ber;
1391         } else
1392 #endif
1393         {
1394                 ber_init_w_nullc( ber, LBER_USE_DER );
1395                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1396         }
1397
1398         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1399                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1400
1401         if( rc != -1 ) {
1402                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1403         }
1404
1405         if( rc != -1 ) {
1406                 rc = ber_printf( ber, /*"{"*/ "N}" );
1407         }
1408
1409         if ( rc == -1 ) {
1410                 Debug( LDAP_DEBUG_ANY,
1411                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1412
1413 #ifdef LDAP_CONNECTIONLESS
1414                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1415 #endif
1416                 ber_free_buf( ber );
1417                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1418                 goto rel;
1419         }
1420
1421         rc = 0;
1422         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1423                 assert( rs->sr_entry != NULL );
1424                 be_entry_release_rw( op, rs->sr_entry, 0 );
1425                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1426                 rs->sr_entry = NULL;
1427         }
1428
1429 #ifdef LDAP_CONNECTIONLESS
1430         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1431 #endif
1432         bytes = send_ldap_ber( op, ber );
1433         ber_free_buf( ber );
1434
1435         if ( bytes < 0 ) {
1436                 rc = LDAP_UNAVAILABLE;
1437         } else {
1438                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1439                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1440                 ldap_pvt_mp_add_ulong( op->o_counters->sc_refs, 1 );
1441                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1442                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1443         }
1444 #ifdef LDAP_CONNECTIONLESS
1445         }
1446 #endif
1447         if ( rs->sr_ref != NULL ) {
1448                 int     r;
1449
1450                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1451                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1452                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1453                                 0, 0 );
1454                 }
1455
1456         } else {
1457                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1458                         op->o_log_prefix, 0, 0, 0, 0 );
1459         }
1460
1461         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1462
1463 rel:
1464         if ( op->o_callback ) {
1465                 (void)slap_cleanup_play( op, rs );
1466         }
1467
1468         return rc;
1469 }
1470
1471 int
1472 str2result(
1473     char        *s,
1474     int         *code,
1475     char        **matched,
1476     char        **info )
1477 {
1478         int     rc;
1479         char    *c;
1480
1481         *code = LDAP_SUCCESS;
1482         *matched = NULL;
1483         *info = NULL;
1484
1485         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1486                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1487                     s, 0, 0 );
1488
1489                 return( -1 );
1490         }
1491
1492         rc = 0;
1493         while ( (s = strchr( s, '\n' )) != NULL ) {
1494                 *s++ = '\0';
1495                 if ( *s == '\0' ) {
1496                         break;
1497                 }
1498                 if ( (c = strchr( s, ':' )) != NULL ) {
1499                         c++;
1500                 }
1501
1502                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1503                         char    *next = NULL;
1504                         long    retcode;
1505
1506                         if ( c == NULL ) {
1507                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
1508                                     s, 0, 0 );
1509                                 rc = -1;
1510                                 continue;
1511                         }
1512
1513                         while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
1514                         if ( c[ 0 ] == '\0' ) {
1515                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
1516                                     s, 0, 0 );
1517                                 rc = -1;
1518                                 continue;
1519                         }
1520
1521                         retcode = strtol( c, &next, 10 );
1522                         if ( next == NULL || next == c ) {
1523                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
1524                                     s, 0, 0 );
1525                                 rc = -1;
1526                                 continue;
1527                         }
1528
1529                         while ( isspace( (unsigned char) next[ 0 ] ) ) next++;
1530                         if ( next[ 0 ] != '\0' ) {
1531                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
1532                                     s, 0, 0 );
1533                                 rc = -1;
1534                                 continue;
1535                         }
1536
1537                         /* FIXME: what if it's larger that max int? */
1538                         *code = (int)retcode;
1539
1540                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1541                         if ( c != NULL ) {
1542                                 *matched = c;
1543                         }
1544                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1545                         if ( c != NULL ) {
1546                                 *info = c;
1547                         }
1548                 } else {
1549                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1550                             s, 0, 0 );
1551
1552                         rc = -1;
1553                 }
1554         }
1555
1556         return( rc );
1557 }
1558
1559 int slap_read_controls(
1560         Operation *op,
1561         SlapReply *rs,
1562         Entry *e,
1563         const struct berval *oid,
1564         LDAPControl **ctrl )
1565 {
1566         int rc;
1567         struct berval bv;
1568         BerElementBuffer berbuf;
1569         BerElement *ber = (BerElement *) &berbuf;
1570         LDAPControl c;
1571         Operation myop;
1572
1573         Debug( LDAP_DEBUG_ANY, "%s slap_read_controls: (%s) %s\n",
1574                 op->o_log_prefix, oid->bv_val, e->e_dn );
1575
1576         rs->sr_entry = e;
1577         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1578                 op->o_preread_attrs : op->o_postread_attrs;
1579
1580         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1581         bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1582
1583         ber_init2( ber, &bv, LBER_USE_DER );
1584         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1585
1586         /* create new operation */
1587         myop = *op;
1588         /* FIXME: o_bd needed for ACL */
1589         myop.o_bd = op->o_bd;
1590         myop.o_res_ber = ber;
1591         myop.o_callback = NULL;
1592         myop.ors_slimit = 1;
1593
1594         rc = slap_send_search_entry( &myop, rs );
1595         if( rc ) return rc;
1596
1597         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1598
1599         if( rc == -1 ) return LDAP_OTHER;
1600
1601         c.ldctl_oid = oid->bv_val;
1602         c.ldctl_iscritical = 0;
1603
1604         if ( *ctrl == NULL ) {
1605                 /* first try */
1606                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1607         } else {
1608                 /* retry: free previous try */
1609                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1610         }
1611
1612         **ctrl = c;
1613         return LDAP_SUCCESS;
1614 }
1615
1616 /* Map API errors to protocol errors... */
1617 int
1618 slap_map_api2result( SlapReply *rs )
1619 {
1620         switch(rs->sr_err) {
1621         case LDAP_SERVER_DOWN:
1622                 return LDAP_UNAVAILABLE;
1623         case LDAP_LOCAL_ERROR:
1624                 return LDAP_OTHER;
1625         case LDAP_ENCODING_ERROR:
1626         case LDAP_DECODING_ERROR:
1627                 return LDAP_PROTOCOL_ERROR;
1628         case LDAP_TIMEOUT:
1629                 return LDAP_UNAVAILABLE;
1630         case LDAP_AUTH_UNKNOWN:
1631                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1632         case LDAP_FILTER_ERROR:
1633                 rs->sr_text = "Filter error";
1634                 return LDAP_OTHER;
1635         case LDAP_USER_CANCELLED:
1636                 rs->sr_text = "User cancelled";
1637                 return LDAP_OTHER;
1638         case LDAP_PARAM_ERROR:
1639                 return LDAP_PROTOCOL_ERROR;
1640         case LDAP_NO_MEMORY:
1641                 return LDAP_OTHER;
1642         case LDAP_CONNECT_ERROR:
1643                 return LDAP_UNAVAILABLE;
1644         case LDAP_NOT_SUPPORTED:
1645                 return LDAP_UNWILLING_TO_PERFORM;
1646         case LDAP_CONTROL_NOT_FOUND:
1647                 return LDAP_PROTOCOL_ERROR;
1648         case LDAP_NO_RESULTS_RETURNED:
1649                 return LDAP_NO_SUCH_OBJECT;
1650         case LDAP_MORE_RESULTS_TO_RETURN:
1651                 rs->sr_text = "More results to return";
1652                 return LDAP_OTHER;
1653         case LDAP_CLIENT_LOOP:
1654         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1655                 return LDAP_LOOP_DETECT;
1656         default:
1657                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1658                 return rs->sr_err;
1659         }
1660 }
1661
1662
1663 slap_mask_t
1664 slap_attr_flags( AttributeName *an )
1665 {
1666         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1667
1668         if ( an == NULL ) {
1669                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1670
1671         } else {
1672                 flags |= an_find( an, slap_bv_all_operational_attrs )
1673                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1674                 flags |= an_find( an, slap_bv_all_user_attrs )
1675                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1676         }
1677
1678         return flags;
1679 }