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                 if ( ldap_pvt_thread_mutex_trylock( &conn->c_mutex )) {
 175                         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 176                         ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 177                         if ( conn->c_writers < 0 ) {
 178                                 ret = 0;
 179                                 break;
 180                         }
 181                         continue;
 182                 }
 183
 184                 if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) {
 185                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 186                         ret = bytes;
 187                         break;
 188                 }
 189
 190                 err = sock_errno();
 191
 192                 /*
 193                  * we got an error.  if it's ewouldblock, we need to
 194                  * wait on the socket being writable.  otherwise, figure
 195                  * it's a hard error and return.
 196                  */
 197
 198                 Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n",
 199                     err, sock_errstr(err), 0 );
 200
 201                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 202                         conn->c_writers--;
 203                         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 204                         connection_closing( conn, "connection lost on write" );
 205
 206                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 207                         return -1;
 208                 }
 209
 210                 /* wait for socket to be write-ready */
 211                 ldap_pvt_thread_mutex_lock( &conn->c_write2_mutex );
 212                 conn->c_writewaiter = 1;
 213                 slapd_set_write( conn->c_sd, 1 );
 214
 215                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 216                 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 217                 ldap_pvt_thread_cond_wait( &conn->c_write2_cv, &conn->c_write2_mutex );
 218                 conn->c_writewaiter = 0;
 219                 ldap_pvt_thread_mutex_unlock( &conn->c_write2_mutex );
 220                 ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 221                 if ( conn->c_writers < 0 ) {
 222                         ret = 0;
 223                         break;
 224                 }
 225         }
 226
 227         if ( conn->c_writers < 0 ) {
 228                 conn->c_writers++;
 229                 if ( !conn->c_writers )
 230                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 231         } else {
 232                 conn->c_writers--;
 233                 ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 234         }
 235         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 236
 237         return ret;
 238 }
 239
 240 static int
 241 send_ldap_control( BerElement *ber, LDAPControl *c )
 242 {
 243         int rc;
 244
 245         assert( c != NULL );
 246
 247         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 248
 249         if( c->ldctl_iscritical ) {
 250                 rc = ber_printf( ber, "b",
 251                         (ber_int_t) c->ldctl_iscritical ) ;
 252                 if( rc == -1 ) return rc;
 253         }
 254
 255         if( c->ldctl_value.bv_val != NULL ) {
 256                 rc = ber_printf( ber, "O", &c->ldctl_value );
 257                 if( rc == -1 ) return rc;
 258         }
 259
 260         rc = ber_printf( ber, /*{*/"N}" );
 261         if( rc == -1 ) return rc;
 262
 263         return 0;
 264 }
 265
 266 static int
 267 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 268 {
 269         int rc;
 270
 271         if( c == NULL )
 272                 return 0;
 273
 274         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 275         if( rc == -1 ) return rc;
 276
 277         for( ; *c != NULL; c++) {
 278                 rc = send_ldap_control( ber, *c );
 279                 if( rc == -1 ) return rc;
 280         }
 281
 282 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 283         /* this is a hack to avoid having to modify op->s_ctrls */
 284         if( o->o_sortedresults ) {
 285                 BerElementBuffer berbuf;
 286                 BerElement *sber = (BerElement *) &berbuf;
 287                 LDAPControl sorted;
 288                 BER_BVZERO( &sorted.ldctl_value );
 289                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 290                 sorted.ldctl_iscritical = 0;
 291
 292                 ber_init2( sber, NULL, LBER_USE_DER );
 293
 294                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 295
 296                 if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
 297                         return -1;
 298                 }
 299
 300                 (void) ber_free_buf( ber );
 301
 302                 rc = send_ldap_control( ber, &sorted );
 303                 if( rc == -1 ) return rc;
 304         }
 305 #endif
 306
 307         rc = ber_printf( ber, /*{*/"N}" );
 308
 309         return rc;
 310 }
 311
 312 /*
 313  * slap_response_play()
 314  *
 315  * plays the callback list; rationale: a callback can
 316  *   - remove itself from the list, by setting op->o_callback = NULL;
 317  *     malloc()'ed callbacks should free themselves from inside the
 318  *     sc_response() function.
 319  *   - replace itself with another (list of) callback(s), by setting
 320  *     op->o_callback = a new (list of) callback(s); in this case, it
 321  *     is the callback's responsibility to to append existing subsequent
 322  *     callbacks to the end of the list that is passed to the sc_response()
 323  *     function.
 324  *   - modify the list of subsequent callbacks by modifying the value
 325  *     of the sc_next field from inside the sc_response() function; this
 326  *     case does not require any handling from inside slap_response_play()
 327  *
 328  * To stop execution of the playlist, the sc_response() function must return
 329  * a value different from SLAP_SC_CONTINUE.
 330  *
 331  * The same applies to slap_cleanup_play(); only, there is no means to stop
 332  * execution of the playlist, since all cleanup functions must be called.
 333  */
 334 static int
 335 slap_response_play(
 336         Operation *op,
 337         SlapReply *rs )
 338 {
 339         int rc;
 340
 341         slap_callback   *sc = op->o_callback, **scp;
 342
 343         rc = SLAP_CB_CONTINUE;
 344         for ( scp = &sc; *scp; ) {
 345                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 346
 347                 op->o_callback = *scp;
 348                 if ( op->o_callback->sc_response ) {
 349                         rc = op->o_callback->sc_response( op, rs );
 350                         if ( op->o_callback == NULL ) {
 351                                 /* the callback has been removed;
 352                                  * repair the list */
 353                                 *scp = sc_next;
 354                                 sc_nextp = scp;
 355
 356                         } else if ( op->o_callback != *scp ) {
 357                                 /* a new callback has been inserted
 358                                  * in place of the existing one; repair the list */
 359                                 *scp = op->o_callback;
 360                                 sc_nextp = scp;
 361                         }
 362                         if ( rc != SLAP_CB_CONTINUE ) break;
 363                 }
 364                 scp = sc_nextp;
 365         }
 366
 367         op->o_callback = sc;
 368         return rc;
 369 }
 370
 371 static int
 372 slap_cleanup_play(
 373         Operation *op,
 374         SlapReply *rs )
 375 {
 376         slap_callback   *sc = op->o_callback, **scp;
 377
 378         for ( scp = &sc; *scp; ) {
 379                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 380
 381                 op->o_callback = *scp;
 382                 if ( op->o_callback->sc_cleanup ) {
 383                         (void)op->o_callback->sc_cleanup( op, rs );
 384                         if ( op->o_callback == NULL ) {
 385                                 /* the callback has been removed;
 386                                  * repair the list */
 387                                 *scp = sc_next;
 388                                 sc_nextp = scp;
 389
 390                         } else if ( op->o_callback != *scp ) {
 391                                 /* a new callback has been inserted
 392                                  * after the existing one; repair the list */
 393                                 /* a new callback has been inserted
 394                                  * in place of the existing one; repair the list */
 395                                 *scp = op->o_callback;
 396                                 sc_nextp = scp;
 397                         }
 398                         /* don't care about the result; do all cleanup */
 399                 }
 400                 scp = sc_nextp;
 401         }
 402
 403         op->o_callback = sc;
 404         return LDAP_SUCCESS;
 405 }
 406
 407 static int
 408 send_ldap_response(
 409         Operation *op,
 410         SlapReply *rs )
 411 {
 412         BerElementBuffer berbuf;
 413         BerElement      *ber = (BerElement *) &berbuf;
 414         int             rc = LDAP_SUCCESS;
 415         long    bytes;
 416
 417         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon ) {
 418                 rc = SLAPD_ABANDON;
 419                 goto clean2;
 420         }
 421
 422         if ( op->o_callback ) {
 423                 rc = slap_response_play( op, rs );
 424                 if ( rc != SLAP_CB_CONTINUE ) {
 425                         goto clean2;
 426                 }
 427         }
 428
 429 #ifdef LDAP_CONNECTIONLESS
 430         if (op->o_conn && op->o_conn->c_is_udp)
 431                 ber = op->o_res_ber;
 432         else
 433 #endif
 434         {
 435                 ber_init_w_nullc( ber, LBER_USE_DER );
 436                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 437         }
 438
 439         Debug( LDAP_DEBUG_TRACE,
 440                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 441                 rs->sr_msgid, rs->sr_tag, rs->sr_err );
 442
 443         if( rs->sr_ref ) {
 444                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 445                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 446                         NULL, NULL );
 447         }
 448
 449 #ifdef LDAP_CONNECTIONLESS
 450         if (op->o_conn && op->o_conn->c_is_udp &&
 451                 op->o_protocol == LDAP_VERSION2 )
 452         {
 453                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 454                         rs->sr_tag, rs->sr_err,
 455                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 456                 rs->sr_text == NULL ? "" : rs->sr_text );
 457         } else
 458 #endif
 459         if ( rs->sr_type == REP_INTERMEDIATE ) {
 460             rc = ber_printf( ber, "{it{" /*"}}"*/,
 461                         rs->sr_msgid, rs->sr_tag );
 462
 463         } else {
 464             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 465                 rs->sr_msgid, rs->sr_tag, rs->sr_err,
 466                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 467                 rs->sr_text == NULL ? "" : rs->sr_text );
 468         }
 469
 470         if( rc != -1 ) {
 471                 if ( rs->sr_ref != NULL ) {
 472                         assert( rs->sr_err == LDAP_REFERRAL );
 473                         rc = ber_printf( ber, "t{W}",
 474                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 475                 } else {
 476                         assert( rs->sr_err != LDAP_REFERRAL );
 477                 }
 478         }
 479
 480         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 481                 rc = ber_printf( ber, "tO",
 482                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 483         }
 484
 485         if( rc != -1 &&
 486                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 487         {
 488                 if ( rs->sr_rspoid != NULL ) {
 489                         rc = ber_printf( ber, "ts",
 490                                 rs->sr_type == REP_EXTENDED
 491                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 492                                 rs->sr_rspoid );
 493                 }
 494                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 495                         rc = ber_printf( ber, "tO",
 496                                 rs->sr_type == REP_EXTENDED
 497                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 498                                 rs->sr_rspdata );
 499                 }
 500         }
 501
 502         if( rc != -1 ) {
 503                 rc = ber_printf( ber, /*"{"*/ "N}" );
 504         }
 505
 506         if( rc != -1 ) {
 507                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 508         }
 509
 510         if( rc != -1 ) {
 511                 rc = ber_printf( ber, /*"{"*/ "N}" );
 512         }
 513
 514 #ifdef LDAP_CONNECTIONLESS
 515         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 516                 && rc != -1 )
 517         {
 518                 rc = ber_printf( ber, /*"{"*/ "N}" );
 519         }
 520 #endif
 521
 522         if ( rc == -1 ) {
 523                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 524
 525 #ifdef LDAP_CONNECTIONLESS
 526                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 527 #endif
 528                 {
 529                         ber_free_buf( ber );
 530                 }
 531                 goto cleanup;
 532         }
 533
 534         /* send BER */
 535         bytes = send_ldap_ber( op->o_conn, ber );
 536 #ifdef LDAP_CONNECTIONLESS
 537         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 538 #endif
 539         {
 540                 ber_free_buf( ber );
 541         }
 542
 543         if ( bytes < 0 ) {
 544                 Debug( LDAP_DEBUG_ANY,
 545                         "send_ldap_response: ber write failed\n",
 546                         0, 0, 0 );
 547
 548                 goto cleanup;
 549         }
 550
 551         ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
 552         ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
 553         ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
 554         ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
 555
 556 cleanup:;
 557         /* Tell caller that we did this for real, as opposed to being
 558          * overridden by a callback
 559          */
 560         rc = SLAP_CB_CONTINUE;
 561
 562 clean2:;
 563         if ( op->o_callback ) {
 564                 (void)slap_cleanup_play( op, rs );
 565         }
 566
 567         if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 568                 rs->sr_flags ^= REP_MATCHED_MUSTBEFREED; /* paranoia */
 569                 if ( rs->sr_matched ) {
 570                         free( (char *)rs->sr_matched );
 571                         rs->sr_matched = NULL;
 572                 }
 573         }
 574
 575         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 576                 rs->sr_flags ^= REP_REF_MUSTBEFREED; /* paranoia */
 577                 if ( rs->sr_ref ) {
 578                         ber_bvarray_free( rs->sr_ref );
 579                         rs->sr_ref = NULL;
 580                 }
 581         }
 582
 583         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
 584                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
 585                 if ( rs->sr_ctrls ) {
 586                         slap_free_ctrls( op, rs->sr_ctrls );
 587                         rs->sr_ctrls = NULL;
 588                 }
 589         }
 590
 591         return rc;
 592 }
 593
 594
 595 void
 596 send_ldap_disconnect( Operation *op, SlapReply *rs )
 597 {
 598 #define LDAP_UNSOLICITED_ERROR(e) \
 599         (  (e) == LDAP_PROTOCOL_ERROR \
 600         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 601         || (e) == LDAP_UNAVAILABLE )
 602
 603         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 604
 605         rs->sr_type = REP_EXTENDED;
 606
 607         Debug( LDAP_DEBUG_TRACE,
 608                 "send_ldap_disconnect %d:%s\n",
 609                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 610
 611         if ( op->o_protocol < LDAP_VERSION3 ) {
 612                 rs->sr_rspoid = NULL;
 613                 rs->sr_tag = slap_req2res( op->o_tag );
 614                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 615
 616         } else {
 617                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 618                 rs->sr_tag = LDAP_RES_EXTENDED;
 619                 rs->sr_msgid = LDAP_RES_UNSOLICITED;
 620         }
 621
 622         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 623                 Statslog( LDAP_DEBUG_STATS,
 624                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 625                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 626                         rs->sr_text ? rs->sr_text : "", 0 );
 627         }
 628 }
 629
 630 void
 631 slap_send_ldap_result( Operation *op, SlapReply *rs )
 632 {
 633         char *tmp = NULL;
 634         const char *otext = rs->sr_text;
 635         BerVarray oref = rs->sr_ref;
 636
 637         rs->sr_type = REP_RESULT;
 638
 639         /* Propagate Abandons so that cleanup callbacks can be processed */
 640         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
 641                 goto abandon;
 642
 643         assert( !LDAP_API_ERROR( rs->sr_err ) );
 644
 645         Debug( LDAP_DEBUG_TRACE,
 646                 "send_ldap_result: %s p=%d\n",
 647                 op->o_log_prefix, op->o_protocol, 0 );
 648
 649         Debug( LDAP_DEBUG_ARGS,
 650                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 651                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 652                 rs->sr_text ? rs->sr_text : "" );
 653
 654
 655         if( rs->sr_ref ) {
 656                 Debug( LDAP_DEBUG_ARGS,
 657                         "send_ldap_result: referral=\"%s\"\n",
 658                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 659                         NULL, NULL );
 660         }
 661
 662         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 663
 664         if ( rs->sr_err == LDAP_REFERRAL ) {
 665                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 666
 667                 if( rs->sr_ref == NULL ) {
 668                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 669                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 670                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 671                 }
 672         }
 673
 674         if ( op->o_protocol < LDAP_VERSION3 ) {
 675                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 676                 rs->sr_text = tmp;
 677                 rs->sr_ref = NULL;
 678         }
 679
 680 abandon:
 681         rs->sr_tag = slap_req2res( op->o_tag );
 682         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 683
 684         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 685                 if ( rs->sr_ref == NULL ) {
 686                         rs->sr_flags ^= REP_REF_MUSTBEFREED;
 687                         ber_bvarray_free( oref );
 688                 }
 689                 oref = NULL; /* send_ldap_response() will free rs->sr_ref if != NULL */
 690         }
 691
 692         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 693                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 694                         Statslog( LDAP_DEBUG_STATS,
 695                                 "%s SEARCH RESULT tag=%lu err=%d nentries=%d text=%s\n",
 696                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 697                                 rs->sr_nentries, rs->sr_text ? rs->sr_text : "" );
 698                 } else {
 699                         Statslog( LDAP_DEBUG_STATS,
 700                                 "%s RESULT tag=%lu err=%d text=%s\n",
 701                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 702                                 rs->sr_text ? rs->sr_text : "", 0 );
 703                 }
 704         }
 705
 706         if( tmp != NULL ) ch_free(tmp);
 707         rs->sr_text = otext;
 708         rs->sr_ref = oref;
 709 }
 710
 711 void
 712 send_ldap_sasl( Operation *op, SlapReply *rs )
 713 {
 714         rs->sr_type = REP_SASL;
 715         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 716                 rs->sr_err,
 717                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 718
 719         rs->sr_tag = slap_req2res( op->o_tag );
 720         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 721
 722         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 723                 Statslog( LDAP_DEBUG_STATS,
 724                         "%s RESULT tag=%lu err=%d text=%s\n",
 725                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 726                         rs->sr_text ? rs->sr_text : "", 0 );
 727         }
 728 }
 729
 730 void
 731 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 732 {
 733         rs->sr_type = REP_EXTENDED;
 734
 735         Debug( LDAP_DEBUG_TRACE,
 736                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 737                 rs->sr_err,
 738                 rs->sr_rspoid ? rs->sr_rspoid : "",
 739                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 740
 741         rs->sr_tag = slap_req2res( op->o_tag );
 742         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 743
 744         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 745                 Statslog( LDAP_DEBUG_STATS,
 746                         "%s RESULT oid=%s err=%d text=%s\n",
 747                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 748                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 749         }
 750 }
 751
 752 void
 753 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 754 {
 755         rs->sr_type = REP_INTERMEDIATE;
 756         Debug( LDAP_DEBUG_TRACE,
 757                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 758                 rs->sr_err,
 759                 rs->sr_rspoid ? rs->sr_rspoid : "",
 760                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 761         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 762         rs->sr_msgid = op->o_msgid;
 763         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 764                 Statslog( LDAP_DEBUG_STATS2,
 765                         "%s INTERM oid=%s\n",
 766                         op->o_log_prefix,
 767                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 768         }
 769 }
 770
 771 /*
 772  * returns:
 773  *
 774  * LDAP_SUCCESS                 entry sent
 775  * LDAP_OTHER                   entry not sent (other)
 776  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 777  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 778  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 779  */
 780
 781 int
 782 slap_send_search_entry( Operation *op, SlapReply *rs )
 783 {
 784         BerElementBuffer berbuf;
 785         BerElement      *ber = (BerElement *) &berbuf;
 786         Attribute       *a;
 787         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 788         int             userattrs;
 789         AccessControlState acl_state = ACL_STATE_INIT;
 790         int                      attrsonly;
 791         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 792
 793         /* a_flags: array of flags telling if the i-th element will be
 794          *          returned or filtered out
 795          * e_flags: array of a_flags
 796          */
 797         char **e_flags = NULL;
 798
 799         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 800                 return LDAP_SIZELIMIT_EXCEEDED;
 801         }
 802
 803         /* Every 64 entries, check for thread pool pause */
 804         if ( ( ( rs->sr_nentries & 0x3f ) == 0x3f ) &&
 805                 ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 )
 806         {
 807                 return LDAP_BUSY;
 808         }
 809
 810         rs->sr_type = REP_SEARCH;
 811
 812         /* eventually will loop through generated operational attribute types
 813          * currently implemented types include:
 814          *      entryDN, subschemaSubentry, and hasSubordinates */
 815         /* NOTE: moved before overlays callback circling because
 816          * they may modify entry and other stuff in rs */
 817         /* check for special all operational attributes ("+") type */
 818         /* FIXME: maybe we could set this flag at the operation level;
 819          * however, in principle the caller of send_search_entry() may
 820          * change the attribute list at each call */
 821         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 822
 823         rc = backend_operational( op, rs );
 824         if ( rc ) {
 825                 goto error_return;
 826         }
 827
 828         if ( op->o_callback ) {
 829                 rc = slap_response_play( op, rs );
 830                 if ( rc != SLAP_CB_CONTINUE ) {
 831                         goto error_return;
 832                 }
 833         }
 834
 835         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 836                 op->o_connid, rs->sr_entry->e_name.bv_val,
 837                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 838
 839         attrsonly = op->ors_attrsonly;
 840
 841         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 842                 Debug( LDAP_DEBUG_ACL,
 843                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 844                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 845
 846                 rc = LDAP_INSUFFICIENT_ACCESS;
 847                 goto error_return;
 848         }
 849
 850         if ( op->o_res_ber ) {
 851                 /* read back control or LDAP_CONNECTIONLESS */
 852             ber = op->o_res_ber;
 853         } else {
 854                 struct berval   bv;
 855
 856                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 857                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 858
 859                 ber_init2( ber, &bv, LBER_USE_DER );
 860                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 861         }
 862
 863 #ifdef LDAP_CONNECTIONLESS
 864         if ( op->o_conn && op->o_conn->c_is_udp ) {
 865                 /* CONNECTIONLESS */
 866                 if ( op->o_protocol == LDAP_VERSION2 ) {
 867                 rc = ber_printf(ber, "t{O{" /*}}*/,
 868                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 869                 } else {
 870                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 871                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 872                 }
 873         } else
 874 #endif
 875         if ( op->o_res_ber ) {
 876                 /* read back control */
 877             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 878         } else {
 879             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 880                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 881         }
 882
 883         if ( rc == -1 ) {
 884                 Debug( LDAP_DEBUG_ANY,
 885                         "send_search_entry: conn %lu  ber_printf failed\n",
 886                         op->o_connid, 0, 0 );
 887
 888                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 889                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 890                 rc = rs->sr_err;
 891                 goto error_return;
 892         }
 893
 894         /* check for special all user attributes ("*") type */
 895         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 896
 897         /* create an array of arrays of flags. Each flag corresponds
 898          * to particular value of attribute and equals 1 if value matches
 899          * to ValuesReturnFilter or 0 if not
 900          */
 901         if ( op->o_vrFilter != NULL ) {
 902                 int     k = 0;
 903                 size_t  size;
 904
 905                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 906                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 907                 }
 908
 909                 size = i * sizeof(char *) + k;
 910                 if ( size > 0 ) {
 911                         char    *a_flags;
 912                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 913                         if( e_flags == NULL ) {
 914                         Debug( LDAP_DEBUG_ANY,
 915                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 916                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 917                                 ber_free( ber, 1 );
 918
 919                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 920                                 goto error_return;
 921                         }
 922                         a_flags = (char *)(e_flags + i);
 923                         memset( a_flags, 0, k );
 924                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 925                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 926                                 e_flags[i] = a_flags;
 927                                 a_flags += j;
 928                         }
 929
 930                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 931                         if ( rc == -1 ) {
 932                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 933                                         "conn %lu matched values filtering failed\n",
 934                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 935                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 936                                 send_ldap_error( op, rs, LDAP_OTHER,
 937                                         "matched values filtering error" );
 938                                 rc = rs->sr_err;
 939                                 goto error_return;
 940                         }
 941                 }
 942         }
 943
 944         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 945                 AttributeDescription *desc = a->a_desc;
 946                 int finish = 0;
 947
 948                 if ( rs->sr_attrs == NULL ) {
 949                         /* all user attrs request, skip operational attributes */
 950                         if( is_at_operational( desc->ad_type ) ) {
 951                                 continue;
 952                         }
 953
 954                 } else {
 955                         /* specific attrs requested */
 956                         if ( is_at_operational( desc->ad_type ) ) {
 957                                 /* if not explicitly requested */
 958                                 if ( !ad_inlist( desc, rs->sr_attrs )) {
 959                                         /* if not all op attrs requested, skip */
 960                                         if ( !SLAP_OPATTRS( rs->sr_attr_flags ))
 961                                                 continue;
 962                                         /* if DSA-specific and replicating, skip */
 963                                         if ( op->o_sync != SLAP_CONTROL_NONE &&
 964                                                 desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
 965                                                 continue;
 966                                 }
 967                         } else {
 968                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 969                                         continue;
 970                                 }
 971                         }
 972                 }
 973
 974                 if ( attrsonly ) {
 975                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 976                                 ACL_READ, &acl_state ) )
 977                         {
 978                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 979                                         "conn %lu access to attribute %s not allowed\n",
 980                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 981                                 continue;
 982                         }
 983
 984                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 985                                 Debug( LDAP_DEBUG_ANY,
 986                                         "send_search_entry: conn %lu  ber_printf failed\n",
 987                                         op->o_connid, 0, 0 );
 988
 989                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 990                                 send_ldap_error( op, rs, LDAP_OTHER,
 991                                         "encoding description error");
 992                                 rc = rs->sr_err;
 993                                 goto error_return;
 994                         }
 995                         finish = 1;
 996
 997                 } else {
 998                         int first = 1;
 999                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
1000                                 if ( ! access_allowed( op, rs->sr_entry,
1001                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
1002                                 {
1003                                         Debug( LDAP_DEBUG_ACL,
1004                                                 "send_search_entry: conn %lu "
1005                                                 "access to attribute %s, value #%d not allowed\n",
1006                                                 op->o_connid, desc->ad_cname.bv_val, i );
1007
1008                                         continue;
1009                                 }
1010
1011                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1012                                         continue;
1013                                 }
1014
1015                                 if ( first ) {
1016                                         first = 0;
1017                                         finish = 1;
1018                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
1019                                                 Debug( LDAP_DEBUG_ANY,
1020                                                         "send_search_entry: conn %lu  ber_printf failed\n",
1021                                                         op->o_connid, 0, 0 );
1022
1023                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1024                                                 send_ldap_error( op, rs, LDAP_OTHER,
1025                                                         "encoding description error");
1026                                                 rc = rs->sr_err;
1027                                                 goto error_return;
1028                                         }
1029                                 }
1030                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1031                                         Debug( LDAP_DEBUG_ANY,
1032                                                 "send_search_entry: conn %lu  "
1033                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
1034
1035                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1036                                         send_ldap_error( op, rs, LDAP_OTHER,
1037                                                 "encoding values error" );
1038                                         rc = rs->sr_err;
1039                                         goto error_return;
1040                                 }
1041                         }
1042                 }
1043
1044                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1045                         Debug( LDAP_DEBUG_ANY,
1046                                 "send_search_entry: conn %lu ber_printf failed\n",
1047                                 op->o_connid, 0, 0 );
1048
1049                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1050                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1051                         rc = rs->sr_err;
1052                         goto error_return;
1053                 }
1054         }
1055
1056         /* NOTE: moved before overlays callback circling because
1057          * they may modify entry and other stuff in rs */
1058         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
1059                 int     k = 0;
1060                 size_t  size;
1061
1062                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1063                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1064                 }
1065
1066                 size = i * sizeof(char *) + k;
1067                 if ( size > 0 ) {
1068                         char    *a_flags, **tmp;
1069
1070                         /*
1071                          * Reuse previous memory - we likely need less space
1072                          * for operational attributes
1073                          */
1074                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
1075                                 op->o_tmpmemctx );
1076                         if ( tmp == NULL ) {
1077                                 Debug( LDAP_DEBUG_ANY,
1078                                         "send_search_entry: conn %lu "
1079                                         "not enough memory "
1080                                         "for matched values filtering\n",
1081                                         op->o_connid, 0, 0 );
1082                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1083                                 send_ldap_error( op, rs, LDAP_OTHER,
1084                                         "not enough memory for matched values filtering" );
1085                                 goto error_return;
1086                         }
1087                         e_flags = tmp;
1088                         a_flags = (char *)(e_flags + i);
1089                         memset( a_flags, 0, k );
1090                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1091                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1092                                 e_flags[i] = a_flags;
1093                                 a_flags += j;
1094                         }
1095                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
1096
1097                         if ( rc == -1 ) {
1098                                 Debug( LDAP_DEBUG_ANY,
1099                                         "send_search_entry: conn %lu "
1100                                         "matched values filtering failed\n",
1101                                         op->o_connid ? op->o_connid : 0, 0, 0);
1102                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1103                                 send_ldap_error( op, rs, LDAP_OTHER,
1104                                         "matched values filtering error" );
1105                                 rc = rs->sr_err;
1106                                 goto error_return;
1107                         }
1108                 }
1109         }
1110
1111         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1112                 AttributeDescription *desc = a->a_desc;
1113
1114                 if ( rs->sr_attrs == NULL ) {
1115                         /* all user attrs request, skip operational attributes */
1116                         if( is_at_operational( desc->ad_type ) ) {
1117                                 continue;
1118                         }
1119
1120                 } else {
1121                         /* specific attrs requested */
1122                         if( is_at_operational( desc->ad_type ) ) {
1123                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1124                                         !ad_inlist( desc, rs->sr_attrs ) )
1125                                 {
1126                                         continue;
1127                                 }
1128                         } else {
1129                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1130                                         continue;
1131                                 }
1132                         }
1133                 }
1134
1135                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1136                         ACL_READ, &acl_state ) )
1137                 {
1138                         Debug( LDAP_DEBUG_ACL,
1139                                 "send_search_entry: conn %lu "
1140                                 "access to attribute %s not allowed\n",
1141                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1142
1143                         continue;
1144                 }
1145
1146                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1147                 if ( rc == -1 ) {
1148                         Debug( LDAP_DEBUG_ANY,
1149                                 "send_search_entry: conn %lu  "
1150                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1151
1152                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1153                         send_ldap_error( op, rs, LDAP_OTHER,
1154                                 "encoding description error" );
1155                         rc = rs->sr_err;
1156                         goto error_return;
1157                 }
1158
1159                 if ( ! attrsonly ) {
1160                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1161                                 if ( ! access_allowed( op, rs->sr_entry,
1162                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1163                                 {
1164                                         Debug( LDAP_DEBUG_ACL,
1165                                                 "send_search_entry: conn %lu "
1166                                                 "access to %s, value %d not allowed\n",
1167                                                 op->o_connid, desc->ad_cname.bv_val, i );
1168
1169                                         continue;
1170                                 }
1171
1172                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1173                                         continue;
1174                                 }
1175
1176                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1177                                         Debug( LDAP_DEBUG_ANY,
1178                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1179                                                 op->o_connid, 0, 0 );
1180
1181                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1182                                         send_ldap_error( op, rs, LDAP_OTHER,
1183                                                 "encoding values error" );
1184                                         rc = rs->sr_err;
1185                                         goto error_return;
1186                                 }
1187                         }
1188                 }
1189
1190                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1191                         Debug( LDAP_DEBUG_ANY,
1192                                 "send_search_entry: conn %lu  ber_printf failed\n",
1193                                 op->o_connid, 0, 0 );
1194
1195                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1196                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1197                         rc = rs->sr_err;
1198                         goto error_return;
1199                 }
1200         }
1201
1202         /* free e_flags */
1203         if ( e_flags ) {
1204                 slap_sl_free( e_flags, op->o_tmpmemctx );
1205                 e_flags = NULL;
1206         }
1207
1208         rc = ber_printf( ber, /*{{*/ "}N}" );
1209
1210         if( rc != -1 ) {
1211                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1212         }
1213
1214         if( rc != -1 ) {
1215 #ifdef LDAP_CONNECTIONLESS
1216                 if( op->o_conn && op->o_conn->c_is_udp ) {
1217                         if ( op->o_protocol != LDAP_VERSION2 ) {
1218                                 rc = ber_printf( ber, /*{*/ "N}" );
1219                         }
1220                 } else
1221 #endif
1222                 if ( op->o_res_ber == NULL ) {
1223                         rc = ber_printf( ber, /*{*/ "N}" );
1224                 }
1225         }
1226
1227         if ( rc == -1 ) {
1228                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1229
1230                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1231                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1232                 rc = rs->sr_err;
1233                 goto error_return;
1234         }
1235
1236         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1237             op->o_log_prefix, rs->sr_entry->e_nname.bv_val, 0, 0, 0 );
1238
1239         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1240                 be_entry_release_rw( op, rs->sr_entry, 0 );
1241                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1242                 rs->sr_entry = NULL;
1243         }
1244
1245         if ( op->o_res_ber == NULL ) {
1246                 bytes = send_ldap_ber( op->o_conn, ber );
1247                 ber_free_buf( ber );
1248
1249                 if ( bytes < 0 ) {
1250                         Debug( LDAP_DEBUG_ANY,
1251                                 "send_search_entry: conn %lu  ber write failed.\n",
1252                                 op->o_connid, 0, 0 );
1253
1254                         rc = LDAP_UNAVAILABLE;
1255                         goto error_return;
1256                 }
1257                 rs->sr_nentries++;
1258
1259                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1260                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1261                 ldap_pvt_mp_add_ulong( op->o_counters->sc_entries, 1 );
1262                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1263                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1264         }
1265
1266         Debug( LDAP_DEBUG_TRACE,
1267                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1268
1269         rc = LDAP_SUCCESS;
1270
1271 error_return:;
1272         if ( op->o_callback ) {
1273                 (void)slap_cleanup_play( op, rs );
1274         }
1275
1276         if ( e_flags ) {
1277                 slap_sl_free( e_flags, op->o_tmpmemctx );
1278         }
1279
1280         if ( rs->sr_operational_attrs ) {
1281                 attrs_free( rs->sr_operational_attrs );
1282                 rs->sr_operational_attrs = NULL;
1283         }
1284         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1285
1286         /* FIXME: I think rs->sr_type should be explicitly set to
1287          * REP_SEARCH here. That's what it was when we entered this
1288          * function. send_ldap_error may have changed it, but we
1289          * should set it back so that the cleanup functions know
1290          * what they're doing.
1291          */
1292         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1293                 && rs->sr_entry
1294                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1295         {
1296                 entry_free( rs->sr_entry );
1297                 rs->sr_entry = NULL;
1298                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1299         }
1300
1301         return( rc );
1302 }
1303
1304 int
1305 slap_send_search_reference( Operation *op, SlapReply *rs )
1306 {
1307         BerElementBuffer berbuf;
1308         BerElement      *ber = (BerElement *) &berbuf;
1309         int rc = 0;
1310         int bytes;
1311         char *edn = rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)";
1312
1313         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1314         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1315
1316         rs->sr_type = REP_SEARCHREF;
1317         if ( op->o_callback ) {
1318                 rc = slap_response_play( op, rs );
1319                 if ( rc != SLAP_CB_CONTINUE ) {
1320                         goto rel;
1321                 }
1322         }
1323
1324         Debug( LDAP_DEBUG_TRACE,
1325                 "=> send_search_reference: dn=\"%s\"\n",
1326                 edn, 0, 0 );
1327
1328         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1329                 ad_entry, NULL, ACL_READ, NULL ) )
1330         {
1331                 Debug( LDAP_DEBUG_ACL,
1332                         "send_search_reference: access to entry not allowed\n",
1333                     0, 0, 0 );
1334                 rc = 1;
1335                 goto rel;
1336         }
1337
1338         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1339                 ad_ref, NULL, ACL_READ, NULL ) )
1340         {
1341                 Debug( LDAP_DEBUG_ACL,
1342                         "send_search_reference: access "
1343                         "to reference not allowed\n",
1344                     0, 0, 0 );
1345                 rc = 1;
1346                 goto rel;
1347         }
1348
1349         if( op->o_domain_scope ) {
1350                 Debug( LDAP_DEBUG_ANY,
1351                         "send_search_reference: domainScope control in (%s)\n",
1352                         edn, 0, 0 );
1353                 rc = 0;
1354                 goto rel;
1355         }
1356
1357         if( rs->sr_ref == NULL ) {
1358                 Debug( LDAP_DEBUG_ANY,
1359                         "send_search_reference: null ref in (%s)\n",
1360                         edn, 0, 0 );
1361                 rc = 1;
1362                 goto rel;
1363         }
1364
1365         if( op->o_protocol < LDAP_VERSION3 ) {
1366                 rc = 0;
1367                 /* save the references for the result */
1368                 if( rs->sr_ref[0].bv_val != NULL ) {
1369                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1370                                 rc = LDAP_OTHER;
1371                 }
1372                 goto rel;
1373         }
1374
1375 #ifdef LDAP_CONNECTIONLESS
1376         if( op->o_conn && op->o_conn->c_is_udp ) {
1377                 ber = op->o_res_ber;
1378         } else
1379 #endif
1380         {
1381                 ber_init_w_nullc( ber, LBER_USE_DER );
1382                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1383         }
1384
1385         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1386                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1387
1388         if( rc != -1 ) {
1389                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1390         }
1391
1392         if( rc != -1 ) {
1393                 rc = ber_printf( ber, /*"{"*/ "N}" );
1394         }
1395
1396         if ( rc == -1 ) {
1397                 Debug( LDAP_DEBUG_ANY,
1398                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1399
1400 #ifdef LDAP_CONNECTIONLESS
1401                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1402 #endif
1403                 ber_free_buf( ber );
1404                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1405                 goto rel;
1406         }
1407
1408         rc = 0;
1409         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1410                 assert( rs->sr_entry != NULL );
1411                 be_entry_release_rw( op, rs->sr_entry, 0 );
1412                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1413                 rs->sr_entry = NULL;
1414         }
1415
1416 #ifdef LDAP_CONNECTIONLESS
1417         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1418 #endif
1419         bytes = send_ldap_ber( op->o_conn, ber );
1420         ber_free_buf( ber );
1421
1422         if ( bytes < 0 ) {
1423                 rc = LDAP_UNAVAILABLE;
1424         } else {
1425                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1426                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1427                 ldap_pvt_mp_add_ulong( op->o_counters->sc_refs, 1 );
1428                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1429                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1430         }
1431 #ifdef LDAP_CONNECTIONLESS
1432         }
1433 #endif
1434         if ( rs->sr_ref != NULL ) {
1435                 int     r;
1436
1437                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1438                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1439                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1440                                 0, 0 );
1441                 }
1442
1443         } else {
1444                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1445                         op->o_log_prefix, 0, 0, 0, 0 );
1446         }
1447
1448         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1449
1450 rel:
1451         if ( op->o_callback ) {
1452                 (void)slap_cleanup_play( op, rs );
1453         }
1454
1455         return rc;
1456 }
1457
1458 int
1459 str2result(
1460     char        *s,
1461     int         *code,
1462     char        **matched,
1463     char        **info )
1464 {
1465         int     rc;
1466         char    *c;
1467
1468         *code = LDAP_SUCCESS;
1469         *matched = NULL;
1470         *info = NULL;
1471
1472         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1473                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1474                     s, 0, 0 );
1475
1476                 return( -1 );
1477         }
1478
1479         rc = 0;
1480         while ( (s = strchr( s, '\n' )) != NULL ) {
1481                 *s++ = '\0';
1482                 if ( *s == '\0' ) {
1483                         break;
1484                 }
1485                 if ( (c = strchr( s, ':' )) != NULL ) {
1486                         c++;
1487                 }
1488
1489                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1490                         char    *next = NULL;
1491                         long    retcode;
1492
1493                         if ( c == NULL ) {
1494                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
1495                                     s, 0, 0 );
1496                                 rc = -1;
1497                                 continue;
1498                         }
1499
1500                         while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
1501                         if ( c[ 0 ] == '\0' ) {
1502                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
1503                                     s, 0, 0 );
1504                                 rc = -1;
1505                                 continue;
1506                         }
1507
1508                         retcode = strtol( c, &next, 10 );
1509                         if ( next == NULL || next == c ) {
1510                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
1511                                     s, 0, 0 );
1512                                 rc = -1;
1513                                 continue;
1514                         }
1515
1516                         while ( isspace( (unsigned char) next[ 0 ] ) ) next++;
1517                         if ( next[ 0 ] != '\0' ) {
1518                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
1519                                     s, 0, 0 );
1520                                 rc = -1;
1521                                 continue;
1522                         }
1523
1524                         /* FIXME: what if it's larger that max int? */
1525                         *code = (int)retcode;
1526
1527                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1528                         if ( c != NULL ) {
1529                                 *matched = c;
1530                         }
1531                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1532                         if ( c != NULL ) {
1533                                 *info = c;
1534                         }
1535                 } else {
1536                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1537                             s, 0, 0 );
1538
1539                         rc = -1;
1540                 }
1541         }
1542
1543         return( rc );
1544 }
1545
1546 int slap_read_controls(
1547         Operation *op,
1548         SlapReply *rs,
1549         Entry *e,
1550         const struct berval *oid,
1551         LDAPControl **ctrl )
1552 {
1553         int rc;
1554         struct berval bv;
1555         BerElementBuffer berbuf;
1556         BerElement *ber = (BerElement *) &berbuf;
1557         LDAPControl c;
1558         Operation myop;
1559
1560         Debug( LDAP_DEBUG_ANY, "%s slap_read_controls: (%s) %s\n",
1561                 op->o_log_prefix, oid->bv_val, e->e_dn );
1562
1563         rs->sr_entry = e;
1564         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1565                 op->o_preread_attrs : op->o_postread_attrs;
1566
1567         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1568         bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1569
1570         ber_init2( ber, &bv, LBER_USE_DER );
1571         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1572
1573         /* create new operation */
1574         myop = *op;
1575         /* FIXME: o_bd needed for ACL */
1576         myop.o_bd = op->o_bd;
1577         myop.o_res_ber = ber;
1578         myop.o_callback = NULL;
1579         myop.ors_slimit = 1;
1580
1581         rc = slap_send_search_entry( &myop, rs );
1582         if( rc ) return rc;
1583
1584         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1585
1586         if( rc == -1 ) return LDAP_OTHER;
1587
1588         c.ldctl_oid = oid->bv_val;
1589         c.ldctl_iscritical = 0;
1590
1591         if ( *ctrl == NULL ) {
1592                 /* first try */
1593                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1594         } else {
1595                 /* retry: free previous try */
1596                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1597         }
1598
1599         **ctrl = c;
1600         return LDAP_SUCCESS;
1601 }
1602
1603 /* Map API errors to protocol errors... */
1604 int
1605 slap_map_api2result( SlapReply *rs )
1606 {
1607         switch(rs->sr_err) {
1608         case LDAP_SERVER_DOWN:
1609                 return LDAP_UNAVAILABLE;
1610         case LDAP_LOCAL_ERROR:
1611                 return LDAP_OTHER;
1612         case LDAP_ENCODING_ERROR:
1613         case LDAP_DECODING_ERROR:
1614                 return LDAP_PROTOCOL_ERROR;
1615         case LDAP_TIMEOUT:
1616                 return LDAP_UNAVAILABLE;
1617         case LDAP_AUTH_UNKNOWN:
1618                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1619         case LDAP_FILTER_ERROR:
1620                 rs->sr_text = "Filter error";
1621                 return LDAP_OTHER;
1622         case LDAP_USER_CANCELLED:
1623                 rs->sr_text = "User cancelled";
1624                 return LDAP_OTHER;
1625         case LDAP_PARAM_ERROR:
1626                 return LDAP_PROTOCOL_ERROR;
1627         case LDAP_NO_MEMORY:
1628                 return LDAP_OTHER;
1629         case LDAP_CONNECT_ERROR:
1630                 return LDAP_UNAVAILABLE;
1631         case LDAP_NOT_SUPPORTED:
1632                 return LDAP_UNWILLING_TO_PERFORM;
1633         case LDAP_CONTROL_NOT_FOUND:
1634                 return LDAP_PROTOCOL_ERROR;
1635         case LDAP_NO_RESULTS_RETURNED:
1636                 return LDAP_NO_SUCH_OBJECT;
1637         case LDAP_MORE_RESULTS_TO_RETURN:
1638                 rs->sr_text = "More results to return";
1639                 return LDAP_OTHER;
1640         case LDAP_CLIENT_LOOP:
1641         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1642                 return LDAP_LOOP_DETECT;
1643         default:
1644                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1645                 return rs->sr_err;
1646         }
1647 }
1648
1649
1650 slap_mask_t
1651 slap_attr_flags( AttributeName *an )
1652 {
1653         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1654
1655         if ( an == NULL ) {
1656                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1657
1658         } else {
1659                 flags |= an_find( an, &AllOper )
1660                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1661                 flags |= an_find( an, &AllUser )
1662                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1663         }
1664
1665         return flags;
1666 }
1667