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         int closing = 0;
 143
 144         ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
 145
 146         /* write only one pdu at a time - wait til it's our turn */
 147         ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 148         if ( op->o_abandon || connection_state_closing( conn )) {
 149                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 150                 return 0;
 151         }
 152         while ( conn->c_writers > 0 ) {
 153                 ldap_pvt_thread_cond_wait( &conn->c_write1_cv, &conn->c_write1_mutex );
 154         }
 155         /* connection was closed under us */
 156         if ( conn->c_writers < 0 ) {
 157                 closing = 1;
 158                 /* we're the last waiter, let the closer continue */
 159                 if ( conn->c_writers == -1 )
 160                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 161         }
 162
 163         conn->c_writers++;
 164
 165         if ( closing ) {
 166                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 167                 return 0;
 168         }
 169
 170         /* write the pdu */
 171         while( 1 ) {
 172                 int err;
 173
 174                 /* lock the connection */
 175                 if ( ldap_pvt_thread_mutex_trylock( &conn->c_mutex )) {
 176                         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 177                         ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 178                         if ( conn->c_writers < 0 ) {
 179                                 ret = 0;
 180                                 break;
 181                         }
 182                         continue;
 183                 }
 184
 185                 if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) {
 186                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 187                         ret = bytes;
 188                         break;
 189                 }
 190
 191                 err = sock_errno();
 192
 193                 /*
 194                  * we got an error.  if it's ewouldblock, we need to
 195                  * wait on the socket being writable.  otherwise, figure
 196                  * it's a hard error and return.
 197                  */
 198
 199                 Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n",
 200                     err, sock_errstr(err), 0 );
 201
 202                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 203                         conn->c_writers--;
 204                         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 205                         connection_closing( conn, "connection lost on write" );
 206
 207                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 208                         return -1;
 209                 }
 210
 211                 /* wait for socket to be write-ready */
 212                 ldap_pvt_thread_mutex_lock( &conn->c_write2_mutex );
 213                 conn->c_writewaiter = 1;
 214                 slapd_set_write( conn->c_sd, 2 );
 215
 216                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 217                 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 218                 ldap_pvt_thread_cond_wait( &conn->c_write2_cv, &conn->c_write2_mutex );
 219                 conn->c_writewaiter = 0;
 220                 ldap_pvt_thread_mutex_unlock( &conn->c_write2_mutex );
 221                 ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 222                 if ( conn->c_writers < 0 ) {
 223                         ret = 0;
 224                         break;
 225                 }
 226         }
 227
 228         if ( conn->c_writers < 0 ) {
 229                 conn->c_writers++;
 230                 if ( !conn->c_writers )
 231                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 232         } else {
 233                 conn->c_writers--;
 234                 ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 235         }
 236         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 237
 238         return ret;
 239 }
 240
 241 static int
 242 send_ldap_control( BerElement *ber, LDAPControl *c )
 243 {
 244         int rc;
 245
 246         assert( c != NULL );
 247
 248         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 249
 250         if( c->ldctl_iscritical ) {
 251                 rc = ber_printf( ber, "b",
 252                         (ber_int_t) c->ldctl_iscritical ) ;
 253                 if( rc == -1 ) return rc;
 254         }
 255
 256         if( c->ldctl_value.bv_val != NULL ) {
 257                 rc = ber_printf( ber, "O", &c->ldctl_value );
 258                 if( rc == -1 ) return rc;
 259         }
 260
 261         rc = ber_printf( ber, /*{*/"N}" );
 262         if( rc == -1 ) return rc;
 263
 264         return 0;
 265 }
 266
 267 static int
 268 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 269 {
 270         int rc;
 271
 272         if( c == NULL )
 273                 return 0;
 274
 275         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 276         if( rc == -1 ) return rc;
 277
 278         for( ; *c != NULL; c++) {
 279                 rc = send_ldap_control( ber, *c );
 280                 if( rc == -1 ) return rc;
 281         }
 282
 283 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 284         /* this is a hack to avoid having to modify op->s_ctrls */
 285         if( o->o_sortedresults ) {
 286                 BerElementBuffer berbuf;
 287                 BerElement *sber = (BerElement *) &berbuf;
 288                 LDAPControl sorted;
 289                 BER_BVZERO( &sorted.ldctl_value );
 290                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 291                 sorted.ldctl_iscritical = 0;
 292
 293                 ber_init2( sber, NULL, LBER_USE_DER );
 294
 295                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 296
 297                 if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
 298                         return -1;
 299                 }
 300
 301                 (void) ber_free_buf( ber );
 302
 303                 rc = send_ldap_control( ber, &sorted );
 304                 if( rc == -1 ) return rc;
 305         }
 306 #endif
 307
 308         rc = ber_printf( ber, /*{*/"N}" );
 309
 310         return rc;
 311 }
 312
 313 /*
 314  * slap_response_play()
 315  *
 316  * plays the callback list; rationale: a callback can
 317  *   - remove itself from the list, by setting op->o_callback = NULL;
 318  *     malloc()'ed callbacks should free themselves from inside the
 319  *     sc_response() function.
 320  *   - replace itself with another (list of) callback(s), by setting
 321  *     op->o_callback = a new (list of) callback(s); in this case, it
 322  *     is the callback's responsibility to to append existing subsequent
 323  *     callbacks to the end of the list that is passed to the sc_response()
 324  *     function.
 325  *   - modify the list of subsequent callbacks by modifying the value
 326  *     of the sc_next field from inside the sc_response() function; this
 327  *     case does not require any handling from inside slap_response_play()
 328  *
 329  * To stop execution of the playlist, the sc_response() function must return
 330  * a value different from SLAP_SC_CONTINUE.
 331  *
 332  * The same applies to slap_cleanup_play(); only, there is no means to stop
 333  * execution of the playlist, since all cleanup functions must be called.
 334  */
 335 static int
 336 slap_response_play(
 337         Operation *op,
 338         SlapReply *rs )
 339 {
 340         int rc;
 341
 342         slap_callback   *sc = op->o_callback, **scp;
 343
 344         rc = SLAP_CB_CONTINUE;
 345         for ( scp = &sc; *scp; ) {
 346                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 347
 348                 op->o_callback = *scp;
 349                 if ( op->o_callback->sc_response ) {
 350                         rc = op->o_callback->sc_response( op, rs );
 351                         if ( op->o_callback == NULL ) {
 352                                 /* the callback has been removed;
 353                                  * repair the list */
 354                                 *scp = sc_next;
 355                                 sc_nextp = scp;
 356
 357                         } else if ( op->o_callback != *scp ) {
 358                                 /* a new callback has been inserted
 359                                  * in place of the existing one; repair the list */
 360                                 *scp = op->o_callback;
 361                                 sc_nextp = scp;
 362                         }
 363                         if ( rc != SLAP_CB_CONTINUE ) break;
 364                 }
 365                 scp = sc_nextp;
 366         }
 367
 368         op->o_callback = sc;
 369         return rc;
 370 }
 371
 372 static int
 373 slap_cleanup_play(
 374         Operation *op,
 375         SlapReply *rs )
 376 {
 377         slap_callback   *sc = op->o_callback, **scp;
 378
 379         for ( scp = &sc; *scp; ) {
 380                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 381
 382                 op->o_callback = *scp;
 383                 if ( op->o_callback->sc_cleanup ) {
 384                         (void)op->o_callback->sc_cleanup( op, rs );
 385                         if ( op->o_callback == NULL ) {
 386                                 /* the callback has been removed;
 387                                  * repair the list */
 388                                 *scp = sc_next;
 389                                 sc_nextp = scp;
 390
 391                         } else if ( op->o_callback != *scp ) {
 392                                 /* a new callback has been inserted
 393                                  * after the existing one; repair the list */
 394                                 /* a new callback has been inserted
 395                                  * in place of the existing one; repair the list */
 396                                 *scp = op->o_callback;
 397                                 sc_nextp = scp;
 398                         }
 399                         /* don't care about the result; do all cleanup */
 400                 }
 401                 scp = sc_nextp;
 402         }
 403
 404         op->o_callback = sc;
 405         return LDAP_SUCCESS;
 406 }
 407
 408 static int
 409 send_ldap_response(
 410         Operation *op,
 411         SlapReply *rs )
 412 {
 413         BerElementBuffer berbuf;
 414         BerElement      *ber = (BerElement *) &berbuf;
 415         int             rc = LDAP_SUCCESS;
 416         long    bytes;
 417
 418         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon ) {
 419                 rc = SLAPD_ABANDON;
 420                 goto clean2;
 421         }
 422
 423         if ( op->o_callback ) {
 424                 rc = slap_response_play( op, rs );
 425                 if ( rc != SLAP_CB_CONTINUE ) {
 426                         goto clean2;
 427                 }
 428         }
 429
 430 #ifdef LDAP_CONNECTIONLESS
 431         if (op->o_conn && op->o_conn->c_is_udp)
 432                 ber = op->o_res_ber;
 433         else
 434 #endif
 435         {
 436                 ber_init_w_nullc( ber, LBER_USE_DER );
 437                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 438         }
 439
 440         Debug( LDAP_DEBUG_TRACE,
 441                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 442                 rs->sr_msgid, rs->sr_tag, rs->sr_err );
 443
 444         if( rs->sr_ref ) {
 445                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 446                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 447                         NULL, NULL );
 448         }
 449
 450 #ifdef LDAP_CONNECTIONLESS
 451         if (op->o_conn && op->o_conn->c_is_udp &&
 452                 op->o_protocol == LDAP_VERSION2 )
 453         {
 454                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 455                         rs->sr_tag, rs->sr_err,
 456                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 457                 rs->sr_text == NULL ? "" : rs->sr_text );
 458         } else
 459 #endif
 460         if ( rs->sr_type == REP_INTERMEDIATE ) {
 461             rc = ber_printf( ber, "{it{" /*"}}"*/,
 462                         rs->sr_msgid, rs->sr_tag );
 463
 464         } else {
 465             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 466                 rs->sr_msgid, rs->sr_tag, rs->sr_err,
 467                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 468                 rs->sr_text == NULL ? "" : rs->sr_text );
 469         }
 470
 471         if( rc != -1 ) {
 472                 if ( rs->sr_ref != NULL ) {
 473                         assert( rs->sr_err == LDAP_REFERRAL );
 474                         rc = ber_printf( ber, "t{W}",
 475                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 476                 } else {
 477                         assert( rs->sr_err != LDAP_REFERRAL );
 478                 }
 479         }
 480
 481         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 482                 rc = ber_printf( ber, "tO",
 483                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 484         }
 485
 486         if( rc != -1 &&
 487                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 488         {
 489                 if ( rs->sr_rspoid != NULL ) {
 490                         rc = ber_printf( ber, "ts",
 491                                 rs->sr_type == REP_EXTENDED
 492                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 493                                 rs->sr_rspoid );
 494                 }
 495                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 496                         rc = ber_printf( ber, "tO",
 497                                 rs->sr_type == REP_EXTENDED
 498                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 499                                 rs->sr_rspdata );
 500                 }
 501         }
 502
 503         if( rc != -1 ) {
 504                 rc = ber_printf( ber, /*"{"*/ "N}" );
 505         }
 506
 507         if( rc != -1 ) {
 508                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 509         }
 510
 511         if( rc != -1 ) {
 512                 rc = ber_printf( ber, /*"{"*/ "N}" );
 513         }
 514
 515 #ifdef LDAP_CONNECTIONLESS
 516         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 517                 && rc != -1 )
 518         {
 519                 rc = ber_printf( ber, /*"{"*/ "N}" );
 520         }
 521 #endif
 522
 523         if ( rc == -1 ) {
 524                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 525
 526 #ifdef LDAP_CONNECTIONLESS
 527                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 528 #endif
 529                 {
 530                         ber_free_buf( ber );
 531                 }
 532                 goto cleanup;
 533         }
 534
 535         /* send BER */
 536         bytes = send_ldap_ber( op, ber );
 537 #ifdef LDAP_CONNECTIONLESS
 538         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 539 #endif
 540         {
 541                 ber_free_buf( ber );
 542         }
 543
 544         if ( bytes < 0 ) {
 545                 Debug( LDAP_DEBUG_ANY,
 546                         "send_ldap_response: ber write failed\n",
 547                         0, 0, 0 );
 548
 549                 goto cleanup;
 550         }
 551
 552         ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
 553         ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
 554         ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
 555         ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
 556
 557 cleanup:;
 558         /* Tell caller that we did this for real, as opposed to being
 559          * overridden by a callback
 560          */
 561         rc = SLAP_CB_CONTINUE;
 562
 563 clean2:;
 564         if ( op->o_callback ) {
 565                 (void)slap_cleanup_play( op, rs );
 566         }
 567
 568         if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 569                 rs->sr_flags ^= REP_MATCHED_MUSTBEFREED; /* paranoia */
 570                 if ( rs->sr_matched ) {
 571                         free( (char *)rs->sr_matched );
 572                         rs->sr_matched = NULL;
 573                 }
 574         }
 575
 576         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 577                 rs->sr_flags ^= REP_REF_MUSTBEFREED; /* paranoia */
 578                 if ( rs->sr_ref ) {
 579                         ber_bvarray_free( rs->sr_ref );
 580                         rs->sr_ref = NULL;
 581                 }
 582         }
 583
 584         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
 585                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
 586                 if ( rs->sr_ctrls ) {
 587                         slap_free_ctrls( op, rs->sr_ctrls );
 588                         rs->sr_ctrls = NULL;
 589                 }
 590         }
 591
 592         return rc;
 593 }
 594
 595
 596 void
 597 send_ldap_disconnect( Operation *op, SlapReply *rs )
 598 {
 599 #define LDAP_UNSOLICITED_ERROR(e) \
 600         (  (e) == LDAP_PROTOCOL_ERROR \
 601         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 602         || (e) == LDAP_UNAVAILABLE )
 603
 604         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 605
 606         rs->sr_type = REP_EXTENDED;
 607
 608         Debug( LDAP_DEBUG_TRACE,
 609                 "send_ldap_disconnect %d:%s\n",
 610                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 611
 612         if ( op->o_protocol < LDAP_VERSION3 ) {
 613                 rs->sr_rspoid = NULL;
 614                 rs->sr_tag = slap_req2res( op->o_tag );
 615                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 616
 617         } else {
 618                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 619                 rs->sr_tag = LDAP_RES_EXTENDED;
 620                 rs->sr_msgid = LDAP_RES_UNSOLICITED;
 621         }
 622
 623         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 624                 Statslog( LDAP_DEBUG_STATS,
 625                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 626                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 627                         rs->sr_text ? rs->sr_text : "", 0 );
 628         }
 629 }
 630
 631 void
 632 slap_send_ldap_result( Operation *op, SlapReply *rs )
 633 {
 634         char *tmp = NULL;
 635         const char *otext = rs->sr_text;
 636         BerVarray oref = rs->sr_ref;
 637
 638         rs->sr_type = REP_RESULT;
 639
 640         /* Propagate Abandons so that cleanup callbacks can be processed */
 641         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
 642                 goto abandon;
 643
 644         assert( !LDAP_API_ERROR( rs->sr_err ) );
 645
 646         Debug( LDAP_DEBUG_TRACE,
 647                 "send_ldap_result: %s p=%d\n",
 648                 op->o_log_prefix, op->o_protocol, 0 );
 649
 650         Debug( LDAP_DEBUG_ARGS,
 651                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 652                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 653                 rs->sr_text ? rs->sr_text : "" );
 654
 655
 656         if( rs->sr_ref ) {
 657                 Debug( LDAP_DEBUG_ARGS,
 658                         "send_ldap_result: referral=\"%s\"\n",
 659                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 660                         NULL, NULL );
 661         }
 662
 663         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 664
 665         if ( rs->sr_err == LDAP_REFERRAL ) {
 666                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 667
 668                 if( rs->sr_ref == NULL ) {
 669                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 670                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 671                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 672                 }
 673         }
 674
 675         if ( op->o_protocol < LDAP_VERSION3 ) {
 676                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 677                 rs->sr_text = tmp;
 678                 rs->sr_ref = NULL;
 679         }
 680
 681 abandon:
 682         rs->sr_tag = slap_req2res( op->o_tag );
 683         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 684
 685         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 686                 if ( rs->sr_ref == NULL ) {
 687                         rs->sr_flags ^= REP_REF_MUSTBEFREED;
 688                         ber_bvarray_free( oref );
 689                 }
 690                 oref = NULL; /* send_ldap_response() will free rs->sr_ref if != NULL */
 691         }
 692
 693         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 694                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 695                         Statslog( LDAP_DEBUG_STATS,
 696                                 "%s SEARCH RESULT tag=%lu err=%d nentries=%d text=%s\n",
 697                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 698                                 rs->sr_nentries, rs->sr_text ? rs->sr_text : "" );
 699                 } else {
 700                         Statslog( LDAP_DEBUG_STATS,
 701                                 "%s RESULT tag=%lu err=%d text=%s\n",
 702                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 703                                 rs->sr_text ? rs->sr_text : "", 0 );
 704                 }
 705         }
 706
 707         if( tmp != NULL ) ch_free(tmp);
 708         rs->sr_text = otext;
 709         rs->sr_ref = oref;
 710 }
 711
 712 void
 713 send_ldap_sasl( Operation *op, SlapReply *rs )
 714 {
 715         rs->sr_type = REP_SASL;
 716         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 717                 rs->sr_err,
 718                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 719
 720         rs->sr_tag = slap_req2res( op->o_tag );
 721         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 722
 723         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 724                 Statslog( LDAP_DEBUG_STATS,
 725                         "%s RESULT tag=%lu err=%d text=%s\n",
 726                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 727                         rs->sr_text ? rs->sr_text : "", 0 );
 728         }
 729 }
 730
 731 void
 732 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 733 {
 734         rs->sr_type = REP_EXTENDED;
 735
 736         Debug( LDAP_DEBUG_TRACE,
 737                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 738                 rs->sr_err,
 739                 rs->sr_rspoid ? rs->sr_rspoid : "",
 740                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 741
 742         rs->sr_tag = slap_req2res( op->o_tag );
 743         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 744
 745         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 746                 Statslog( LDAP_DEBUG_STATS,
 747                         "%s RESULT oid=%s err=%d text=%s\n",
 748                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 749                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 750         }
 751 }
 752
 753 void
 754 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 755 {
 756         rs->sr_type = REP_INTERMEDIATE;
 757         Debug( LDAP_DEBUG_TRACE,
 758                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 759                 rs->sr_err,
 760                 rs->sr_rspoid ? rs->sr_rspoid : "",
 761                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 762         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 763         rs->sr_msgid = op->o_msgid;
 764         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 765                 Statslog( LDAP_DEBUG_STATS2,
 766                         "%s INTERM oid=%s\n",
 767                         op->o_log_prefix,
 768                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 769         }
 770 }
 771
 772 /*
 773  * returns:
 774  *
 775  * LDAP_SUCCESS                 entry sent
 776  * LDAP_OTHER                   entry not sent (other)
 777  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 778  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 779  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 780  */
 781
 782 int
 783 slap_send_search_entry( Operation *op, SlapReply *rs )
 784 {
 785         BerElementBuffer berbuf;
 786         BerElement      *ber = (BerElement *) &berbuf;
 787         Attribute       *a;
 788         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 789         int             userattrs;
 790         AccessControlState acl_state = ACL_STATE_INIT;
 791         int                      attrsonly;
 792         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 793
 794         /* a_flags: array of flags telling if the i-th element will be
 795          *          returned or filtered out
 796          * e_flags: array of a_flags
 797          */
 798         char **e_flags = NULL;
 799
 800         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 801                 return LDAP_SIZELIMIT_EXCEEDED;
 802         }
 803
 804         /* Every 64 entries, check for thread pool pause */
 805         if ( ( ( rs->sr_nentries & 0x3f ) == 0x3f ) &&
 806                 ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 )
 807         {
 808                 return LDAP_BUSY;
 809         }
 810
 811         rs->sr_type = REP_SEARCH;
 812
 813         /* eventually will loop through generated operational attribute types
 814          * currently implemented types include:
 815          *      entryDN, subschemaSubentry, and hasSubordinates */
 816         /* NOTE: moved before overlays callback circling because
 817          * they may modify entry and other stuff in rs */
 818         /* check for special all operational attributes ("+") type */
 819         /* FIXME: maybe we could set this flag at the operation level;
 820          * however, in principle the caller of send_search_entry() may
 821          * change the attribute list at each call */
 822         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 823
 824         rc = backend_operational( op, rs );
 825         if ( rc ) {
 826                 goto error_return;
 827         }
 828
 829         if ( op->o_callback ) {
 830                 rc = slap_response_play( op, rs );
 831                 if ( rc != SLAP_CB_CONTINUE ) {
 832                         goto error_return;
 833                 }
 834         }
 835
 836         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 837                 op->o_connid, rs->sr_entry->e_name.bv_val,
 838                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 839
 840         attrsonly = op->ors_attrsonly;
 841
 842         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 843                 Debug( LDAP_DEBUG_ACL,
 844                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 845                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 846
 847                 rc = LDAP_INSUFFICIENT_ACCESS;
 848                 goto error_return;
 849         }
 850
 851         if ( op->o_res_ber ) {
 852                 /* read back control or LDAP_CONNECTIONLESS */
 853             ber = op->o_res_ber;
 854         } else {
 855                 struct berval   bv;
 856
 857                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 858                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 859
 860                 ber_init2( ber, &bv, LBER_USE_DER );
 861                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 862         }
 863
 864 #ifdef LDAP_CONNECTIONLESS
 865         if ( op->o_conn && op->o_conn->c_is_udp ) {
 866                 /* CONNECTIONLESS */
 867                 if ( op->o_protocol == LDAP_VERSION2 ) {
 868                 rc = ber_printf(ber, "t{O{" /*}}*/,
 869                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 870                 } else {
 871                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 872                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 873                 }
 874         } else
 875 #endif
 876         if ( op->o_res_ber ) {
 877                 /* read back control */
 878             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 879         } else {
 880             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 881                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 882         }
 883
 884         if ( rc == -1 ) {
 885                 Debug( LDAP_DEBUG_ANY,
 886                         "send_search_entry: conn %lu  ber_printf failed\n",
 887                         op->o_connid, 0, 0 );
 888
 889                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 890                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 891                 rc = rs->sr_err;
 892                 goto error_return;
 893         }
 894
 895         /* check for special all user attributes ("*") type */
 896         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 897
 898         /* create an array of arrays of flags. Each flag corresponds
 899          * to particular value of attribute and equals 1 if value matches
 900          * to ValuesReturnFilter or 0 if not
 901          */
 902         if ( op->o_vrFilter != NULL ) {
 903                 int     k = 0;
 904                 size_t  size;
 905
 906                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 907                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 908                 }
 909
 910                 size = i * sizeof(char *) + k;
 911                 if ( size > 0 ) {
 912                         char    *a_flags;
 913                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 914                         if( e_flags == NULL ) {
 915                         Debug( LDAP_DEBUG_ANY,
 916                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 917                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 918                                 ber_free( ber, 1 );
 919
 920                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 921                                 goto error_return;
 922                         }
 923                         a_flags = (char *)(e_flags + i);
 924                         memset( a_flags, 0, k );
 925                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 926                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 927                                 e_flags[i] = a_flags;
 928                                 a_flags += j;
 929                         }
 930
 931                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 932                         if ( rc == -1 ) {
 933                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 934                                         "conn %lu matched values filtering failed\n",
 935                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 936                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 937                                 send_ldap_error( op, rs, LDAP_OTHER,
 938                                         "matched values filtering error" );
 939                                 rc = rs->sr_err;
 940                                 goto error_return;
 941                         }
 942                 }
 943         }
 944
 945         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 946                 AttributeDescription *desc = a->a_desc;
 947                 int finish = 0;
 948
 949                 if ( rs->sr_attrs == NULL ) {
 950                         /* all user attrs request, skip operational attributes */
 951                         if( is_at_operational( desc->ad_type ) ) {
 952                                 continue;
 953                         }
 954
 955                 } else {
 956                         /* specific attrs requested */
 957                         if ( is_at_operational( desc->ad_type ) ) {
 958                                 /* if not explicitly requested */
 959                                 if ( !ad_inlist( desc, rs->sr_attrs )) {
 960                                         /* if not all op attrs requested, skip */
 961                                         if ( !SLAP_OPATTRS( rs->sr_attr_flags ))
 962                                                 continue;
 963                                         /* if DSA-specific and replicating, skip */
 964                                         if ( op->o_sync != SLAP_CONTROL_NONE &&
 965                                                 desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
 966                                                 continue;
 967                                 }
 968                         } else {
 969                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 970                                         continue;
 971                                 }
 972                         }
 973                 }
 974
 975                 if ( attrsonly ) {
 976                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 977                                 ACL_READ, &acl_state ) )
 978                         {
 979                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 980                                         "conn %lu access to attribute %s not allowed\n",
 981                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 982                                 continue;
 983                         }
 984
 985                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 986                                 Debug( LDAP_DEBUG_ANY,
 987                                         "send_search_entry: conn %lu  ber_printf failed\n",
 988                                         op->o_connid, 0, 0 );
 989
 990                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 991                                 send_ldap_error( op, rs, LDAP_OTHER,
 992                                         "encoding description error");
 993                                 rc = rs->sr_err;
 994                                 goto error_return;
 995                         }
 996                         finish = 1;
 997
 998                 } else {
 999                         int first = 1;
1000                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
1001                                 if ( ! access_allowed( op, rs->sr_entry,
1002                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
1003                                 {
1004                                         Debug( LDAP_DEBUG_ACL,
1005                                                 "send_search_entry: conn %lu "
1006                                                 "access to attribute %s, value #%d not allowed\n",
1007                                                 op->o_connid, desc->ad_cname.bv_val, i );
1008
1009                                         continue;
1010                                 }
1011
1012                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1013                                         continue;
1014                                 }
1015
1016                                 if ( first ) {
1017                                         first = 0;
1018                                         finish = 1;
1019                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
1020                                                 Debug( LDAP_DEBUG_ANY,
1021                                                         "send_search_entry: conn %lu  ber_printf failed\n",
1022                                                         op->o_connid, 0, 0 );
1023
1024                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1025                                                 send_ldap_error( op, rs, LDAP_OTHER,
1026                                                         "encoding description error");
1027                                                 rc = rs->sr_err;
1028                                                 goto error_return;
1029                                         }
1030                                 }
1031                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1032                                         Debug( LDAP_DEBUG_ANY,
1033                                                 "send_search_entry: conn %lu  "
1034                                                 "ber_printf failed.\n", 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 values error" );
1039                                         rc = rs->sr_err;
1040                                         goto error_return;
1041                                 }
1042                         }
1043                 }
1044
1045                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1046                         Debug( LDAP_DEBUG_ANY,
1047                                 "send_search_entry: conn %lu ber_printf failed\n",
1048                                 op->o_connid, 0, 0 );
1049
1050                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1051                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1052                         rc = rs->sr_err;
1053                         goto error_return;
1054                 }
1055         }
1056
1057         /* NOTE: moved before overlays callback circling because
1058          * they may modify entry and other stuff in rs */
1059         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
1060                 int     k = 0;
1061                 size_t  size;
1062
1063                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1064                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1065                 }
1066
1067                 size = i * sizeof(char *) + k;
1068                 if ( size > 0 ) {
1069                         char    *a_flags, **tmp;
1070
1071                         /*
1072                          * Reuse previous memory - we likely need less space
1073                          * for operational attributes
1074                          */
1075                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
1076                                 op->o_tmpmemctx );
1077                         if ( tmp == NULL ) {
1078                                 Debug( LDAP_DEBUG_ANY,
1079                                         "send_search_entry: conn %lu "
1080                                         "not enough memory "
1081                                         "for matched values filtering\n",
1082                                         op->o_connid, 0, 0 );
1083                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1084                                 send_ldap_error( op, rs, LDAP_OTHER,
1085                                         "not enough memory for matched values filtering" );
1086                                 goto error_return;
1087                         }
1088                         e_flags = tmp;
1089                         a_flags = (char *)(e_flags + i);
1090                         memset( a_flags, 0, k );
1091                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1092                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1093                                 e_flags[i] = a_flags;
1094                                 a_flags += j;
1095                         }
1096                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
1097
1098                         if ( rc == -1 ) {
1099                                 Debug( LDAP_DEBUG_ANY,
1100                                         "send_search_entry: conn %lu "
1101                                         "matched values filtering failed\n",
1102                                         op->o_connid ? op->o_connid : 0, 0, 0);
1103                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1104                                 send_ldap_error( op, rs, LDAP_OTHER,
1105                                         "matched values filtering error" );
1106                                 rc = rs->sr_err;
1107                                 goto error_return;
1108                         }
1109                 }
1110         }
1111
1112         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1113                 AttributeDescription *desc = a->a_desc;
1114
1115                 if ( rs->sr_attrs == NULL ) {
1116                         /* all user attrs request, skip operational attributes */
1117                         if( is_at_operational( desc->ad_type ) ) {
1118                                 continue;
1119                         }
1120
1121                 } else {
1122                         /* specific attrs requested */
1123                         if( is_at_operational( desc->ad_type ) ) {
1124                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1125                                         !ad_inlist( desc, rs->sr_attrs ) )
1126                                 {
1127                                         continue;
1128                                 }
1129                         } else {
1130                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1131                                         continue;
1132                                 }
1133                         }
1134                 }
1135
1136                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1137                         ACL_READ, &acl_state ) )
1138                 {
1139                         Debug( LDAP_DEBUG_ACL,
1140                                 "send_search_entry: conn %lu "
1141                                 "access to attribute %s not allowed\n",
1142                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1143
1144                         continue;
1145                 }
1146
1147                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1148                 if ( rc == -1 ) {
1149                         Debug( LDAP_DEBUG_ANY,
1150                                 "send_search_entry: conn %lu  "
1151                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1152
1153                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1154                         send_ldap_error( op, rs, LDAP_OTHER,
1155                                 "encoding description error" );
1156                         rc = rs->sr_err;
1157                         goto error_return;
1158                 }
1159
1160                 if ( ! attrsonly ) {
1161                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1162                                 if ( ! access_allowed( op, rs->sr_entry,
1163                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1164                                 {
1165                                         Debug( LDAP_DEBUG_ACL,
1166                                                 "send_search_entry: conn %lu "
1167                                                 "access to %s, value %d not allowed\n",
1168                                                 op->o_connid, desc->ad_cname.bv_val, i );
1169
1170                                         continue;
1171                                 }
1172
1173                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1174                                         continue;
1175                                 }
1176
1177                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1178                                         Debug( LDAP_DEBUG_ANY,
1179                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1180                                                 op->o_connid, 0, 0 );
1181
1182                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1183                                         send_ldap_error( op, rs, LDAP_OTHER,
1184                                                 "encoding values error" );
1185                                         rc = rs->sr_err;
1186                                         goto error_return;
1187                                 }
1188                         }
1189                 }
1190
1191                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1192                         Debug( LDAP_DEBUG_ANY,
1193                                 "send_search_entry: conn %lu  ber_printf failed\n",
1194                                 op->o_connid, 0, 0 );
1195
1196                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1197                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1198                         rc = rs->sr_err;
1199                         goto error_return;
1200                 }
1201         }
1202
1203         /* free e_flags */
1204         if ( e_flags ) {
1205                 slap_sl_free( e_flags, op->o_tmpmemctx );
1206                 e_flags = NULL;
1207         }
1208
1209         rc = ber_printf( ber, /*{{*/ "}N}" );
1210
1211         if( rc != -1 ) {
1212                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1213         }
1214
1215         if( rc != -1 ) {
1216 #ifdef LDAP_CONNECTIONLESS
1217                 if( op->o_conn && op->o_conn->c_is_udp ) {
1218                         if ( op->o_protocol != LDAP_VERSION2 ) {
1219                                 rc = ber_printf( ber, /*{*/ "N}" );
1220                         }
1221                 } else
1222 #endif
1223                 if ( op->o_res_ber == NULL ) {
1224                         rc = ber_printf( ber, /*{*/ "N}" );
1225                 }
1226         }
1227
1228         if ( rc == -1 ) {
1229                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1230
1231                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1232                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1233                 rc = rs->sr_err;
1234                 goto error_return;
1235         }
1236
1237         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1238             op->o_log_prefix, rs->sr_entry->e_nname.bv_val, 0, 0, 0 );
1239
1240         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1241                 be_entry_release_rw( op, rs->sr_entry, 0 );
1242                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1243                 rs->sr_entry = NULL;
1244         }
1245
1246         if ( op->o_res_ber == NULL ) {
1247                 bytes = send_ldap_ber( op, ber );
1248                 ber_free_buf( ber );
1249
1250                 if ( bytes < 0 ) {
1251                         Debug( LDAP_DEBUG_ANY,
1252                                 "send_search_entry: conn %lu  ber write failed.\n",
1253                                 op->o_connid, 0, 0 );
1254
1255                         rc = LDAP_UNAVAILABLE;
1256                         goto error_return;
1257                 }
1258                 rs->sr_nentries++;
1259
1260                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1261                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1262                 ldap_pvt_mp_add_ulong( op->o_counters->sc_entries, 1 );
1263                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1264                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1265         }
1266
1267         Debug( LDAP_DEBUG_TRACE,
1268                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1269
1270         rc = LDAP_SUCCESS;
1271
1272 error_return:;
1273         if ( op->o_callback ) {
1274                 (void)slap_cleanup_play( op, rs );
1275         }
1276
1277         if ( e_flags ) {
1278                 slap_sl_free( e_flags, op->o_tmpmemctx );
1279         }
1280
1281         if ( rs->sr_operational_attrs ) {
1282                 attrs_free( rs->sr_operational_attrs );
1283                 rs->sr_operational_attrs = NULL;
1284         }
1285         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1286
1287         /* FIXME: I think rs->sr_type should be explicitly set to
1288          * REP_SEARCH here. That's what it was when we entered this
1289          * function. send_ldap_error may have changed it, but we
1290          * should set it back so that the cleanup functions know
1291          * what they're doing.
1292          */
1293         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1294                 && rs->sr_entry
1295                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1296         {
1297                 entry_free( rs->sr_entry );
1298                 rs->sr_entry = NULL;
1299                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1300         }
1301
1302         return( rc );
1303 }
1304
1305 int
1306 slap_send_search_reference( Operation *op, SlapReply *rs )
1307 {
1308         BerElementBuffer berbuf;
1309         BerElement      *ber = (BerElement *) &berbuf;
1310         int rc = 0;
1311         int bytes;
1312         char *edn = rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)";
1313
1314         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1315         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1316
1317         rs->sr_type = REP_SEARCHREF;
1318         if ( op->o_callback ) {
1319                 rc = slap_response_play( op, rs );
1320                 if ( rc != SLAP_CB_CONTINUE ) {
1321                         goto rel;
1322                 }
1323         }
1324
1325         Debug( LDAP_DEBUG_TRACE,
1326                 "=> send_search_reference: dn=\"%s\"\n",
1327                 edn, 0, 0 );
1328
1329         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1330                 ad_entry, NULL, ACL_READ, NULL ) )
1331         {
1332                 Debug( LDAP_DEBUG_ACL,
1333                         "send_search_reference: access to entry not allowed\n",
1334                     0, 0, 0 );
1335                 rc = 1;
1336                 goto rel;
1337         }
1338
1339         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1340                 ad_ref, NULL, ACL_READ, NULL ) )
1341         {
1342                 Debug( LDAP_DEBUG_ACL,
1343                         "send_search_reference: access "
1344                         "to reference not allowed\n",
1345                     0, 0, 0 );
1346                 rc = 1;
1347                 goto rel;
1348         }
1349
1350         if( op->o_domain_scope ) {
1351                 Debug( LDAP_DEBUG_ANY,
1352                         "send_search_reference: domainScope control in (%s)\n",
1353                         edn, 0, 0 );
1354                 rc = 0;
1355                 goto rel;
1356         }
1357
1358         if( rs->sr_ref == NULL ) {
1359                 Debug( LDAP_DEBUG_ANY,
1360                         "send_search_reference: null ref in (%s)\n",
1361                         edn, 0, 0 );
1362                 rc = 1;
1363                 goto rel;
1364         }
1365
1366         if( op->o_protocol < LDAP_VERSION3 ) {
1367                 rc = 0;
1368                 /* save the references for the result */
1369                 if( rs->sr_ref[0].bv_val != NULL ) {
1370                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1371                                 rc = LDAP_OTHER;
1372                 }
1373                 goto rel;
1374         }
1375
1376 #ifdef LDAP_CONNECTIONLESS
1377         if( op->o_conn && op->o_conn->c_is_udp ) {
1378                 ber = op->o_res_ber;
1379         } else
1380 #endif
1381         {
1382                 ber_init_w_nullc( ber, LBER_USE_DER );
1383                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1384         }
1385
1386         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1387                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1388
1389         if( rc != -1 ) {
1390                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1391         }
1392
1393         if( rc != -1 ) {
1394                 rc = ber_printf( ber, /*"{"*/ "N}" );
1395         }
1396
1397         if ( rc == -1 ) {
1398                 Debug( LDAP_DEBUG_ANY,
1399                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1400
1401 #ifdef LDAP_CONNECTIONLESS
1402                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1403 #endif
1404                 ber_free_buf( ber );
1405                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1406                 goto rel;
1407         }
1408
1409         rc = 0;
1410         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1411                 assert( rs->sr_entry != NULL );
1412                 be_entry_release_rw( op, rs->sr_entry, 0 );
1413                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1414                 rs->sr_entry = NULL;
1415         }
1416
1417 #ifdef LDAP_CONNECTIONLESS
1418         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1419 #endif
1420         bytes = send_ldap_ber( op, ber );
1421         ber_free_buf( ber );
1422
1423         if ( bytes < 0 ) {
1424                 rc = LDAP_UNAVAILABLE;
1425         } else {
1426                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1427                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1428                 ldap_pvt_mp_add_ulong( op->o_counters->sc_refs, 1 );
1429                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1430                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1431         }
1432 #ifdef LDAP_CONNECTIONLESS
1433         }
1434 #endif
1435         if ( rs->sr_ref != NULL ) {
1436                 int     r;
1437
1438                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1439                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1440                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1441                                 0, 0 );
1442                 }
1443
1444         } else {
1445                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1446                         op->o_log_prefix, 0, 0, 0, 0 );
1447         }
1448
1449         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1450
1451 rel:
1452         if ( op->o_callback ) {
1453                 (void)slap_cleanup_play( op, rs );
1454         }
1455
1456         return rc;
1457 }
1458
1459 int
1460 str2result(
1461     char        *s,
1462     int         *code,
1463     char        **matched,
1464     char        **info )
1465 {
1466         int     rc;
1467         char    *c;
1468
1469         *code = LDAP_SUCCESS;
1470         *matched = NULL;
1471         *info = NULL;
1472
1473         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1474                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1475                     s, 0, 0 );
1476
1477                 return( -1 );
1478         }
1479
1480         rc = 0;
1481         while ( (s = strchr( s, '\n' )) != NULL ) {
1482                 *s++ = '\0';
1483                 if ( *s == '\0' ) {
1484                         break;
1485                 }
1486                 if ( (c = strchr( s, ':' )) != NULL ) {
1487                         c++;
1488                 }
1489
1490                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1491                         char    *next = NULL;
1492                         long    retcode;
1493
1494                         if ( c == NULL ) {
1495                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
1496                                     s, 0, 0 );
1497                                 rc = -1;
1498                                 continue;
1499                         }
1500
1501                         while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
1502                         if ( c[ 0 ] == '\0' ) {
1503                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
1504                                     s, 0, 0 );
1505                                 rc = -1;
1506                                 continue;
1507                         }
1508
1509                         retcode = strtol( c, &next, 10 );
1510                         if ( next == NULL || next == c ) {
1511                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
1512                                     s, 0, 0 );
1513                                 rc = -1;
1514                                 continue;
1515                         }
1516
1517                         while ( isspace( (unsigned char) next[ 0 ] ) ) next++;
1518                         if ( next[ 0 ] != '\0' ) {
1519                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
1520                                     s, 0, 0 );
1521                                 rc = -1;
1522                                 continue;
1523                         }
1524
1525                         /* FIXME: what if it's larger that max int? */
1526                         *code = (int)retcode;
1527
1528                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1529                         if ( c != NULL ) {
1530                                 *matched = c;
1531                         }
1532                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1533                         if ( c != NULL ) {
1534                                 *info = c;
1535                         }
1536                 } else {
1537                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1538                             s, 0, 0 );
1539
1540                         rc = -1;
1541                 }
1542         }
1543
1544         return( rc );
1545 }
1546
1547 int slap_read_controls(
1548         Operation *op,
1549         SlapReply *rs,
1550         Entry *e,
1551         const struct berval *oid,
1552         LDAPControl **ctrl )
1553 {
1554         int rc;
1555         struct berval bv;
1556         BerElementBuffer berbuf;
1557         BerElement *ber = (BerElement *) &berbuf;
1558         LDAPControl c;
1559         Operation myop;
1560
1561         Debug( LDAP_DEBUG_ANY, "%s slap_read_controls: (%s) %s\n",
1562                 op->o_log_prefix, oid->bv_val, e->e_dn );
1563
1564         rs->sr_entry = e;
1565         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1566                 op->o_preread_attrs : op->o_postread_attrs;
1567
1568         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1569         bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1570
1571         ber_init2( ber, &bv, LBER_USE_DER );
1572         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1573
1574         /* create new operation */
1575         myop = *op;
1576         /* FIXME: o_bd needed for ACL */
1577         myop.o_bd = op->o_bd;
1578         myop.o_res_ber = ber;
1579         myop.o_callback = NULL;
1580         myop.ors_slimit = 1;
1581
1582         rc = slap_send_search_entry( &myop, rs );
1583         if( rc ) return rc;
1584
1585         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1586
1587         if( rc == -1 ) return LDAP_OTHER;
1588
1589         c.ldctl_oid = oid->bv_val;
1590         c.ldctl_iscritical = 0;
1591
1592         if ( *ctrl == NULL ) {
1593                 /* first try */
1594                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1595         } else {
1596                 /* retry: free previous try */
1597                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1598         }
1599
1600         **ctrl = c;
1601         return LDAP_SUCCESS;
1602 }
1603
1604 /* Map API errors to protocol errors... */
1605 int
1606 slap_map_api2result( SlapReply *rs )
1607 {
1608         switch(rs->sr_err) {
1609         case LDAP_SERVER_DOWN:
1610                 return LDAP_UNAVAILABLE;
1611         case LDAP_LOCAL_ERROR:
1612                 return LDAP_OTHER;
1613         case LDAP_ENCODING_ERROR:
1614         case LDAP_DECODING_ERROR:
1615                 return LDAP_PROTOCOL_ERROR;
1616         case LDAP_TIMEOUT:
1617                 return LDAP_UNAVAILABLE;
1618         case LDAP_AUTH_UNKNOWN:
1619                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1620         case LDAP_FILTER_ERROR:
1621                 rs->sr_text = "Filter error";
1622                 return LDAP_OTHER;
1623         case LDAP_USER_CANCELLED:
1624                 rs->sr_text = "User cancelled";
1625                 return LDAP_OTHER;
1626         case LDAP_PARAM_ERROR:
1627                 return LDAP_PROTOCOL_ERROR;
1628         case LDAP_NO_MEMORY:
1629                 return LDAP_OTHER;
1630         case LDAP_CONNECT_ERROR:
1631                 return LDAP_UNAVAILABLE;
1632         case LDAP_NOT_SUPPORTED:
1633                 return LDAP_UNWILLING_TO_PERFORM;
1634         case LDAP_CONTROL_NOT_FOUND:
1635                 return LDAP_PROTOCOL_ERROR;
1636         case LDAP_NO_RESULTS_RETURNED:
1637                 return LDAP_NO_SUCH_OBJECT;
1638         case LDAP_MORE_RESULTS_TO_RETURN:
1639                 rs->sr_text = "More results to return";
1640                 return LDAP_OTHER;
1641         case LDAP_CLIENT_LOOP:
1642         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1643                 return LDAP_LOOP_DETECT;
1644         default:
1645                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1646                 return rs->sr_err;
1647         }
1648 }
1649
1650
1651 slap_mask_t
1652 slap_attr_flags( AttributeName *an )
1653 {
1654         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1655
1656         if ( an == NULL ) {
1657                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1658
1659         } else {
1660                 flags |= an_find( an, slap_bv_all_operational_attrs )
1661                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1662                 flags |= an_find( an, slap_bv_all_user_attrs )
1663                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1664         }
1665
1666         return flags;
1667 }
1668