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 1998-2008 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
 141         ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
 142
 143         /* write only one pdu at a time - wait til it's our turn */
 144         ldap_pvt_thread_mutex_lock( &conn->c_write_mutex );
 145
 146         /* lock the connection */
 147         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 148
 149         /* write the pdu */
 150         while( 1 ) {
 151                 int err;
 152
 153                 if ( connection_state_closing( conn ) ) {
 154                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 155                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 156
 157                         return 0;
 158                 }
 159
 160                 if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) {
 161                         break;
 162                 }
 163
 164                 err = sock_errno();
 165
 166                 /*
 167                  * we got an error.  if it's ewouldblock, we need to
 168                  * wait on the socket being writable.  otherwise, figure
 169                  * it's a hard error and return.
 170                  */
 171
 172                 Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n",
 173                     err, sock_errstr(err), 0 );
 174
 175                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 176                         connection_closing( conn, "connection lost on write" );
 177
 178                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 179                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 180
 181                         return( -1 );
 182                 }
 183
 184                 /* wait for socket to be write-ready */
 185                 conn->c_writewaiter = 1;
 186                 slapd_set_write( conn->c_sd, 1 );
 187
 188                 ldap_pvt_thread_cond_wait( &conn->c_write_cv, &conn->c_mutex );
 189                 conn->c_writewaiter = 0;
 190         }
 191
 192         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 193         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 194
 195         return bytes;
 196 }
 197
 198 static int
 199 send_ldap_control( BerElement *ber, LDAPControl *c )
 200 {
 201         int rc;
 202
 203         assert( c != NULL );
 204
 205         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 206
 207         if( c->ldctl_iscritical ) {
 208                 rc = ber_printf( ber, "b",
 209                         (ber_int_t) c->ldctl_iscritical ) ;
 210                 if( rc == -1 ) return rc;
 211         }
 212
 213         if( c->ldctl_value.bv_val != NULL ) {
 214                 rc = ber_printf( ber, "O", &c->ldctl_value );
 215                 if( rc == -1 ) return rc;
 216         }
 217
 218         rc = ber_printf( ber, /*{*/"N}" );
 219         if( rc == -1 ) return rc;
 220
 221         return 0;
 222 }
 223
 224 static int
 225 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 226 {
 227         int rc;
 228
 229         if( c == NULL )
 230                 return 0;
 231
 232         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 233         if( rc == -1 ) return rc;
 234
 235         for( ; *c != NULL; c++) {
 236                 rc = send_ldap_control( ber, *c );
 237                 if( rc == -1 ) return rc;
 238         }
 239
 240 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 241         /* this is a hack to avoid having to modify op->s_ctrls */
 242         if( o->o_sortedresults ) {
 243                 BerElementBuffer berbuf;
 244                 BerElement *sber = (BerElement *) &berbuf;
 245                 LDAPControl sorted;
 246                 BER_BVZERO( &sorted.ldctl_value );
 247                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 248                 sorted.ldctl_iscritical = 0;
 249
 250                 ber_init2( sber, NULL, LBER_USE_DER );
 251
 252                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 253
 254                 if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
 255                         return -1;
 256                 }
 257
 258                 (void) ber_free_buf( ber );
 259
 260                 rc = send_ldap_control( ber, &sorted );
 261                 if( rc == -1 ) return rc;
 262         }
 263 #endif
 264
 265         rc = ber_printf( ber, /*{*/"N}" );
 266
 267         return rc;
 268 }
 269
 270 /*
 271  * slap_response_play()
 272  *
 273  * plays the callback list; rationale: a callback can
 274  *   - remove itself from the list, by setting op->o_callback = NULL;
 275  *     malloc()'ed callbacks should free themselves from inside the
 276  *     sc_response() function.
 277  *   - replace itself with another (list of) callback(s), by setting
 278  *     op->o_callback = a new (list of) callback(s); in this case, it
 279  *     is the callback's responsibility to to append existing subsequent
 280  *     callbacks to the end of the list that is passed to the sc_response()
 281  *     function.
 282  *   - modify the list of subsequent callbacks by modifying the value
 283  *     of the sc_next field from inside the sc_response() function; this
 284  *     case does not require any handling from inside slap_response_play()
 285  *
 286  * To stop execution of the playlist, the sc_response() function must return
 287  * a value different from SLAP_SC_CONTINUE.
 288  *
 289  * The same applies to slap_cleanup_play(); only, there is no means to stop
 290  * execution of the playlist, since all cleanup functions must be called.
 291  */
 292 static int
 293 slap_response_play(
 294         Operation *op,
 295         SlapReply *rs )
 296 {
 297         int rc;
 298
 299         slap_callback   *sc = op->o_callback, **scp;
 300
 301         rc = SLAP_CB_CONTINUE;
 302         for ( scp = &sc; *scp; ) {
 303                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 304
 305                 op->o_callback = *scp;
 306                 if ( op->o_callback->sc_response ) {
 307                         rc = op->o_callback->sc_response( op, rs );
 308                         if ( op->o_callback == NULL ) {
 309                                 /* the callback has been removed;
 310                                  * repair the list */
 311                                 *scp = sc_next;
 312                                 sc_nextp = scp;
 313
 314                         } else if ( op->o_callback != *scp ) {
 315                                 /* a new callback has been inserted
 316                                  * in place of the existing one; repair the list */
 317                                 *scp = op->o_callback;
 318                                 sc_nextp = scp;
 319                         }
 320                         if ( rc != SLAP_CB_CONTINUE ) break;
 321                 }
 322                 scp = sc_nextp;
 323         }
 324
 325         op->o_callback = sc;
 326         return rc;
 327 }
 328
 329 static int
 330 slap_cleanup_play(
 331         Operation *op,
 332         SlapReply *rs )
 333 {
 334         slap_callback   *sc = op->o_callback, **scp;
 335
 336         for ( scp = &sc; *scp; ) {
 337                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 338
 339                 op->o_callback = *scp;
 340                 if ( op->o_callback->sc_cleanup ) {
 341                         (void)op->o_callback->sc_cleanup( op, rs );
 342                         if ( op->o_callback == NULL ) {
 343                                 /* the callback has been removed;
 344                                  * repair the list */
 345                                 *scp = sc_next;
 346                                 sc_nextp = scp;
 347
 348                         } else if ( op->o_callback != *scp ) {
 349                                 /* a new callback has been inserted
 350                                  * after the existing one; repair the list */
 351                                 /* a new callback has been inserted
 352                                  * in place of the existing one; repair the list */
 353                                 *scp = op->o_callback;
 354                                 sc_nextp = scp;
 355                         }
 356                         /* don't care about the result; do all cleanup */
 357                 }
 358                 scp = sc_nextp;
 359         }
 360
 361         op->o_callback = sc;
 362         return LDAP_SUCCESS;
 363 }
 364
 365 static int
 366 send_ldap_response(
 367         Operation *op,
 368         SlapReply *rs )
 369 {
 370         BerElementBuffer berbuf;
 371         BerElement      *ber = (BerElement *) &berbuf;
 372         int             rc = LDAP_SUCCESS;
 373         long    bytes;
 374
 375         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon ) {
 376                 rc = SLAPD_ABANDON;
 377                 goto clean2;
 378         }
 379
 380         if ( op->o_callback ) {
 381                 rc = slap_response_play( op, rs );
 382                 if ( rc != SLAP_CB_CONTINUE ) {
 383                         goto clean2;
 384                 }
 385         }
 386
 387 #ifdef LDAP_CONNECTIONLESS
 388         if (op->o_conn && op->o_conn->c_is_udp)
 389                 ber = op->o_res_ber;
 390         else
 391 #endif
 392         {
 393                 ber_init_w_nullc( ber, LBER_USE_DER );
 394                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 395         }
 396
 397         Debug( LDAP_DEBUG_TRACE,
 398                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 399                 rs->sr_msgid, rs->sr_tag, rs->sr_err );
 400
 401         if( rs->sr_ref ) {
 402                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 403                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 404                         NULL, NULL );
 405         }
 406
 407 #ifdef LDAP_CONNECTIONLESS
 408         if (op->o_conn && op->o_conn->c_is_udp &&
 409                 op->o_protocol == LDAP_VERSION2 )
 410         {
 411                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 412                         rs->sr_tag, rs->sr_err,
 413                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 414                 rs->sr_text == NULL ? "" : rs->sr_text );
 415         } else
 416 #endif
 417         if ( rs->sr_type == REP_INTERMEDIATE ) {
 418             rc = ber_printf( ber, "{it{" /*"}}"*/,
 419                         rs->sr_msgid, rs->sr_tag );
 420
 421         } else {
 422             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 423                 rs->sr_msgid, rs->sr_tag, rs->sr_err,
 424                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 425                 rs->sr_text == NULL ? "" : rs->sr_text );
 426         }
 427
 428         if( rc != -1 ) {
 429                 if ( rs->sr_ref != NULL ) {
 430                         assert( rs->sr_err == LDAP_REFERRAL );
 431                         rc = ber_printf( ber, "t{W}",
 432                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 433                 } else {
 434                         assert( rs->sr_err != LDAP_REFERRAL );
 435                 }
 436         }
 437
 438         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 439                 rc = ber_printf( ber, "tO",
 440                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 441         }
 442
 443         if( rc != -1 &&
 444                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 445         {
 446                 if ( rs->sr_rspoid != NULL ) {
 447                         rc = ber_printf( ber, "ts",
 448                                 rs->sr_type == REP_EXTENDED
 449                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 450                                 rs->sr_rspoid );
 451                 }
 452                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 453                         rc = ber_printf( ber, "tO",
 454                                 rs->sr_type == REP_EXTENDED
 455                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 456                                 rs->sr_rspdata );
 457                 }
 458         }
 459
 460         if( rc != -1 ) {
 461                 rc = ber_printf( ber, /*"{"*/ "N}" );
 462         }
 463
 464         if( rc != -1 ) {
 465                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 466         }
 467
 468         if( rc != -1 ) {
 469                 rc = ber_printf( ber, /*"{"*/ "N}" );
 470         }
 471
 472 #ifdef LDAP_CONNECTIONLESS
 473         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 474                 && rc != -1 )
 475         {
 476                 rc = ber_printf( ber, /*"{"*/ "N}" );
 477         }
 478 #endif
 479
 480         if ( rc == -1 ) {
 481                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 482
 483 #ifdef LDAP_CONNECTIONLESS
 484                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 485 #endif
 486                 {
 487                         ber_free_buf( ber );
 488                 }
 489                 goto cleanup;
 490         }
 491
 492         /* send BER */
 493         bytes = send_ldap_ber( op->o_conn, ber );
 494 #ifdef LDAP_CONNECTIONLESS
 495         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 496 #endif
 497         {
 498                 ber_free_buf( ber );
 499         }
 500
 501         if ( bytes < 0 ) {
 502                 Debug( LDAP_DEBUG_ANY,
 503                         "send_ldap_response: ber write failed\n",
 504                         0, 0, 0 );
 505
 506                 goto cleanup;
 507         }
 508
 509         ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
 510         ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
 511         ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
 512         ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
 513
 514 cleanup:;
 515         /* Tell caller that we did this for real, as opposed to being
 516          * overridden by a callback
 517          */
 518         rc = SLAP_CB_CONTINUE;
 519
 520 clean2:;
 521         if ( op->o_callback ) {
 522                 (void)slap_cleanup_play( op, rs );
 523         }
 524
 525         if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 526                 rs->sr_flags ^= REP_MATCHED_MUSTBEFREED; /* paranoia */
 527                 if ( rs->sr_matched ) {
 528                         free( (char *)rs->sr_matched );
 529                         rs->sr_matched = NULL;
 530                 }
 531         }
 532
 533         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 534                 rs->sr_flags ^= REP_REF_MUSTBEFREED; /* paranoia */
 535                 if ( rs->sr_ref ) {
 536                         ber_bvarray_free( rs->sr_ref );
 537                         rs->sr_ref = NULL;
 538                 }
 539         }
 540
 541         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
 542                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
 543                 if ( rs->sr_ctrls ) {
 544                         slap_free_ctrls( op, rs->sr_ctrls );
 545                         rs->sr_ctrls = NULL;
 546                 }
 547         }
 548
 549         return rc;
 550 }
 551
 552
 553 void
 554 send_ldap_disconnect( Operation *op, SlapReply *rs )
 555 {
 556 #define LDAP_UNSOLICITED_ERROR(e) \
 557         (  (e) == LDAP_PROTOCOL_ERROR \
 558         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 559         || (e) == LDAP_UNAVAILABLE )
 560
 561         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 562
 563         rs->sr_type = REP_EXTENDED;
 564
 565         Debug( LDAP_DEBUG_TRACE,
 566                 "send_ldap_disconnect %d:%s\n",
 567                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 568
 569         if ( op->o_protocol < LDAP_VERSION3 ) {
 570                 rs->sr_rspoid = NULL;
 571                 rs->sr_tag = slap_req2res( op->o_tag );
 572                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 573
 574         } else {
 575                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 576                 rs->sr_tag = LDAP_RES_EXTENDED;
 577                 rs->sr_msgid = LDAP_RES_UNSOLICITED;
 578         }
 579
 580         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 581                 Statslog( LDAP_DEBUG_STATS,
 582                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 583                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 584                         rs->sr_text ? rs->sr_text : "", 0 );
 585         }
 586 }
 587
 588 void
 589 slap_send_ldap_result( Operation *op, SlapReply *rs )
 590 {
 591         char *tmp = NULL;
 592         const char *otext = rs->sr_text;
 593         BerVarray oref = rs->sr_ref;
 594
 595         rs->sr_type = REP_RESULT;
 596
 597         /* Propagate Abandons so that cleanup callbacks can be processed */
 598         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
 599                 goto abandon;
 600
 601         assert( !LDAP_API_ERROR( rs->sr_err ) );
 602
 603         Debug( LDAP_DEBUG_TRACE,
 604                 "send_ldap_result: %s p=%d\n",
 605                 op->o_log_prefix, op->o_protocol, 0 );
 606
 607         Debug( LDAP_DEBUG_ARGS,
 608                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 609                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 610                 rs->sr_text ? rs->sr_text : "" );
 611
 612
 613         if( rs->sr_ref ) {
 614                 Debug( LDAP_DEBUG_ARGS,
 615                         "send_ldap_result: referral=\"%s\"\n",
 616                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 617                         NULL, NULL );
 618         }
 619
 620         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 621
 622         if ( rs->sr_err == LDAP_REFERRAL ) {
 623                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 624
 625                 if( rs->sr_ref == NULL ) {
 626                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 627                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 628                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 629                 }
 630         }
 631
 632         if ( op->o_protocol < LDAP_VERSION3 ) {
 633                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 634                 rs->sr_text = tmp;
 635                 rs->sr_ref = NULL;
 636         }
 637
 638 abandon:
 639         rs->sr_tag = slap_req2res( op->o_tag );
 640         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 641
 642         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 643                 if ( rs->sr_ref == NULL ) {
 644                         rs->sr_flags ^= REP_REF_MUSTBEFREED;
 645                         ber_bvarray_free( oref );
 646                 }
 647                 oref = NULL; /* send_ldap_response() will free rs->sr_ref if != NULL */
 648         }
 649
 650         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 651                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 652                         Statslog( LDAP_DEBUG_STATS,
 653                                 "%s SEARCH RESULT tag=%lu err=%d nentries=%d text=%s\n",
 654                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 655                                 rs->sr_nentries, rs->sr_text ? rs->sr_text : "" );
 656                 } else {
 657                         Statslog( LDAP_DEBUG_STATS,
 658                                 "%s RESULT tag=%lu err=%d text=%s\n",
 659                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 660                                 rs->sr_text ? rs->sr_text : "", 0 );
 661                 }
 662         }
 663
 664         if( tmp != NULL ) ch_free(tmp);
 665         rs->sr_text = otext;
 666         rs->sr_ref = oref;
 667 }
 668
 669 void
 670 send_ldap_sasl( Operation *op, SlapReply *rs )
 671 {
 672         rs->sr_type = REP_SASL;
 673         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 674                 rs->sr_err,
 675                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 676
 677         rs->sr_tag = slap_req2res( op->o_tag );
 678         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 679
 680         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 681                 Statslog( LDAP_DEBUG_STATS,
 682                         "%s RESULT tag=%lu err=%d text=%s\n",
 683                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 684                         rs->sr_text ? rs->sr_text : "", 0 );
 685         }
 686 }
 687
 688 void
 689 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 690 {
 691         rs->sr_type = REP_EXTENDED;
 692
 693         Debug( LDAP_DEBUG_TRACE,
 694                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 695                 rs->sr_err,
 696                 rs->sr_rspoid ? rs->sr_rspoid : "",
 697                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 698
 699         rs->sr_tag = slap_req2res( op->o_tag );
 700         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 701
 702         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 703                 Statslog( LDAP_DEBUG_STATS,
 704                         "%s RESULT oid=%s err=%d text=%s\n",
 705                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 706                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 707         }
 708 }
 709
 710 void
 711 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 712 {
 713         rs->sr_type = REP_INTERMEDIATE;
 714         Debug( LDAP_DEBUG_TRACE,
 715                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 716                 rs->sr_err,
 717                 rs->sr_rspoid ? rs->sr_rspoid : "",
 718                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 719         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 720         rs->sr_msgid = op->o_msgid;
 721         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 722                 Statslog( LDAP_DEBUG_STATS2,
 723                         "%s INTERM oid=%s\n",
 724                         op->o_log_prefix,
 725                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 726         }
 727 }
 728
 729 /*
 730  * returns:
 731  *
 732  * LDAP_SUCCESS                 entry sent
 733  * LDAP_OTHER                   entry not sent (other)
 734  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 735  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 736  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 737  */
 738
 739 int
 740 slap_send_search_entry( Operation *op, SlapReply *rs )
 741 {
 742         BerElementBuffer berbuf;
 743         BerElement      *ber = (BerElement *) &berbuf;
 744         Attribute       *a;
 745         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 746         int             userattrs;
 747         AccessControlState acl_state = ACL_STATE_INIT;
 748         int                      attrsonly;
 749         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 750
 751         /* a_flags: array of flags telling if the i-th element will be
 752          *          returned or filtered out
 753          * e_flags: array of a_flags
 754          */
 755         char **e_flags = NULL;
 756
 757         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 758                 return LDAP_SIZELIMIT_EXCEEDED;
 759         }
 760
 761         /* Every 64 entries, check for thread pool pause */
 762         if ( ( ( rs->sr_nentries & 0x3f ) == 0x3f ) &&
 763                 ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 )
 764         {
 765                 return LDAP_BUSY;
 766         }
 767
 768         rs->sr_type = REP_SEARCH;
 769
 770         /* eventually will loop through generated operational attribute types
 771          * currently implemented types include:
 772          *      entryDN, subschemaSubentry, and hasSubordinates */
 773         /* NOTE: moved before overlays callback circling because
 774          * they may modify entry and other stuff in rs */
 775         /* check for special all operational attributes ("+") type */
 776         /* FIXME: maybe we could set this flag at the operation level;
 777          * however, in principle the caller of send_search_entry() may
 778          * change the attribute list at each call */
 779         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 780
 781         rc = backend_operational( op, rs );
 782         if ( rc ) {
 783                 goto error_return;
 784         }
 785
 786         if ( op->o_callback ) {
 787                 rc = slap_response_play( op, rs );
 788                 if ( rc != SLAP_CB_CONTINUE ) {
 789                         goto error_return;
 790                 }
 791         }
 792
 793         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 794                 op->o_connid, rs->sr_entry->e_name.bv_val,
 795                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 796
 797         attrsonly = op->ors_attrsonly;
 798
 799         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 800                 Debug( LDAP_DEBUG_ACL,
 801                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 802                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 803
 804                 rc = LDAP_INSUFFICIENT_ACCESS;
 805                 goto error_return;
 806         }
 807
 808         if ( op->o_res_ber ) {
 809                 /* read back control or LDAP_CONNECTIONLESS */
 810             ber = op->o_res_ber;
 811         } else {
 812                 struct berval   bv;
 813
 814                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 815                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 816
 817                 ber_init2( ber, &bv, LBER_USE_DER );
 818                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 819         }
 820
 821 #ifdef LDAP_CONNECTIONLESS
 822         if ( op->o_conn && op->o_conn->c_is_udp ) {
 823                 /* CONNECTIONLESS */
 824                 if ( op->o_protocol == LDAP_VERSION2 ) {
 825                 rc = ber_printf(ber, "t{O{" /*}}*/,
 826                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 827                 } else {
 828                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 829                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 830                 }
 831         } else
 832 #endif
 833         if ( op->o_res_ber ) {
 834                 /* read back control */
 835             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 836         } else {
 837             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 838                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 839         }
 840
 841         if ( rc == -1 ) {
 842                 Debug( LDAP_DEBUG_ANY,
 843                         "send_search_entry: conn %lu  ber_printf failed\n",
 844                         op->o_connid, 0, 0 );
 845
 846                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 847                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 848                 rc = rs->sr_err;
 849                 goto error_return;
 850         }
 851
 852         /* check for special all user attributes ("*") type */
 853         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 854
 855         /* create an array of arrays of flags. Each flag corresponds
 856          * to particular value of attribute and equals 1 if value matches
 857          * to ValuesReturnFilter or 0 if not
 858          */
 859         if ( op->o_vrFilter != NULL ) {
 860                 int     k = 0;
 861                 size_t  size;
 862
 863                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 864                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 865                 }
 866
 867                 size = i * sizeof(char *) + k;
 868                 if ( size > 0 ) {
 869                         char    *a_flags;
 870                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 871                         if( e_flags == NULL ) {
 872                         Debug( LDAP_DEBUG_ANY,
 873                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 874                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 875                                 ber_free( ber, 1 );
 876
 877                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 878                                 goto error_return;
 879                         }
 880                         a_flags = (char *)(e_flags + i);
 881                         memset( a_flags, 0, k );
 882                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 883                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 884                                 e_flags[i] = a_flags;
 885                                 a_flags += j;
 886                         }
 887
 888                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 889                         if ( rc == -1 ) {
 890                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 891                                         "conn %lu matched values filtering failed\n",
 892                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 893                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 894                                 send_ldap_error( op, rs, LDAP_OTHER,
 895                                         "matched values filtering error" );
 896                                 rc = rs->sr_err;
 897                                 goto error_return;
 898                         }
 899                 }
 900         }
 901
 902         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 903                 AttributeDescription *desc = a->a_desc;
 904                 int finish = 0;
 905
 906                 if ( rs->sr_attrs == NULL ) {
 907                         /* all user attrs request, skip operational attributes */
 908                         if( is_at_operational( desc->ad_type ) ) {
 909                                 continue;
 910                         }
 911
 912                 } else {
 913                         /* specific attrs requested */
 914                         if ( is_at_operational( desc->ad_type ) ) {
 915                                 /* if not explicitly requested */
 916                                 if ( !ad_inlist( desc, rs->sr_attrs )) {
 917                                         /* if not all op attrs requested, skip */
 918                                         if ( !SLAP_OPATTRS( rs->sr_attr_flags ))
 919                                                 continue;
 920                                         /* if DSA-specific and replicating, skip */
 921                                         if ( op->o_sync != SLAP_CONTROL_NONE &&
 922                                                 desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
 923                                                 continue;
 924                                 }
 925                         } else {
 926                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 927                                         continue;
 928                                 }
 929                         }
 930                 }
 931
 932                 if ( attrsonly ) {
 933                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 934                                 ACL_READ, &acl_state ) )
 935                         {
 936                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 937                                         "conn %lu access to attribute %s not allowed\n",
 938                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 939                                 continue;
 940                         }
 941
 942                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 943                                 Debug( LDAP_DEBUG_ANY,
 944                                         "send_search_entry: conn %lu  ber_printf failed\n",
 945                                         op->o_connid, 0, 0 );
 946
 947                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 948                                 send_ldap_error( op, rs, LDAP_OTHER,
 949                                         "encoding description error");
 950                                 rc = rs->sr_err;
 951                                 goto error_return;
 952                         }
 953                         finish = 1;
 954
 955                 } else {
 956                         int first = 1;
 957                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
 958                                 if ( ! access_allowed( op, rs->sr_entry,
 959                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
 960                                 {
 961                                         Debug( LDAP_DEBUG_ACL,
 962                                                 "send_search_entry: conn %lu "
 963                                                 "access to attribute %s, value #%d not allowed\n",
 964                                                 op->o_connid, desc->ad_cname.bv_val, i );
 965
 966                                         continue;
 967                                 }
 968
 969                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
 970                                         continue;
 971                                 }
 972
 973                                 if ( first ) {
 974                                         first = 0;
 975                                         finish = 1;
 976                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 977                                                 Debug( LDAP_DEBUG_ANY,
 978                                                         "send_search_entry: conn %lu  ber_printf failed\n",
 979                                                         op->o_connid, 0, 0 );
 980
 981                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 982                                                 send_ldap_error( op, rs, LDAP_OTHER,
 983                                                         "encoding description error");
 984                                                 rc = rs->sr_err;
 985                                                 goto error_return;
 986                                         }
 987                                 }
 988                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
 989                                         Debug( LDAP_DEBUG_ANY,
 990                                                 "send_search_entry: conn %lu  "
 991                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
 992
 993                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 994                                         send_ldap_error( op, rs, LDAP_OTHER,
 995                                                 "encoding values error" );
 996                                         rc = rs->sr_err;
 997                                         goto error_return;
 998                                 }
 999                         }
1000                 }
1001
1002                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1003                         Debug( LDAP_DEBUG_ANY,
1004                                 "send_search_entry: conn %lu ber_printf failed\n",
1005                                 op->o_connid, 0, 0 );
1006
1007                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1008                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1009                         rc = rs->sr_err;
1010                         goto error_return;
1011                 }
1012         }
1013
1014         /* NOTE: moved before overlays callback circling because
1015          * they may modify entry and other stuff in rs */
1016         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
1017                 int     k = 0;
1018                 size_t  size;
1019
1020                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1021                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1022                 }
1023
1024                 size = i * sizeof(char *) + k;
1025                 if ( size > 0 ) {
1026                         char    *a_flags, **tmp;
1027
1028                         /*
1029                          * Reuse previous memory - we likely need less space
1030                          * for operational attributes
1031                          */
1032                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
1033                                 op->o_tmpmemctx );
1034                         if ( tmp == NULL ) {
1035                                 Debug( LDAP_DEBUG_ANY,
1036                                         "send_search_entry: conn %lu "
1037                                         "not enough memory "
1038                                         "for matched values filtering\n",
1039                                         op->o_connid, 0, 0 );
1040                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1041                                 send_ldap_error( op, rs, LDAP_OTHER,
1042                                         "not enough memory for matched values filtering" );
1043                                 goto error_return;
1044                         }
1045                         e_flags = tmp;
1046                         a_flags = (char *)(e_flags + i);
1047                         memset( a_flags, 0, k );
1048                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1049                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1050                                 e_flags[i] = a_flags;
1051                                 a_flags += j;
1052                         }
1053                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
1054
1055                         if ( rc == -1 ) {
1056                                 Debug( LDAP_DEBUG_ANY,
1057                                         "send_search_entry: conn %lu "
1058                                         "matched values filtering failed\n",
1059                                         op->o_connid ? op->o_connid : 0, 0, 0);
1060                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1061                                 send_ldap_error( op, rs, LDAP_OTHER,
1062                                         "matched values filtering error" );
1063                                 rc = rs->sr_err;
1064                                 goto error_return;
1065                         }
1066                 }
1067         }
1068
1069         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1070                 AttributeDescription *desc = a->a_desc;
1071
1072                 if ( rs->sr_attrs == NULL ) {
1073                         /* all user attrs request, skip operational attributes */
1074                         if( is_at_operational( desc->ad_type ) ) {
1075                                 continue;
1076                         }
1077
1078                 } else {
1079                         /* specific attrs requested */
1080                         if( is_at_operational( desc->ad_type ) ) {
1081                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1082                                         !ad_inlist( desc, rs->sr_attrs ) )
1083                                 {
1084                                         continue;
1085                                 }
1086                         } else {
1087                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1088                                         continue;
1089                                 }
1090                         }
1091                 }
1092
1093                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1094                         ACL_READ, &acl_state ) )
1095                 {
1096                         Debug( LDAP_DEBUG_ACL,
1097                                 "send_search_entry: conn %lu "
1098                                 "access to attribute %s not allowed\n",
1099                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1100
1101                         continue;
1102                 }
1103
1104                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1105                 if ( rc == -1 ) {
1106                         Debug( LDAP_DEBUG_ANY,
1107                                 "send_search_entry: conn %lu  "
1108                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1109
1110                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1111                         send_ldap_error( op, rs, LDAP_OTHER,
1112                                 "encoding description error" );
1113                         rc = rs->sr_err;
1114                         goto error_return;
1115                 }
1116
1117                 if ( ! attrsonly ) {
1118                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1119                                 if ( ! access_allowed( op, rs->sr_entry,
1120                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1121                                 {
1122                                         Debug( LDAP_DEBUG_ACL,
1123                                                 "send_search_entry: conn %lu "
1124                                                 "access to %s, value %d not allowed\n",
1125                                                 op->o_connid, desc->ad_cname.bv_val, i );
1126
1127                                         continue;
1128                                 }
1129
1130                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1131                                         continue;
1132                                 }
1133
1134                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1135                                         Debug( LDAP_DEBUG_ANY,
1136                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1137                                                 op->o_connid, 0, 0 );
1138
1139                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1140                                         send_ldap_error( op, rs, LDAP_OTHER,
1141                                                 "encoding values error" );
1142                                         rc = rs->sr_err;
1143                                         goto error_return;
1144                                 }
1145                         }
1146                 }
1147
1148                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1149                         Debug( LDAP_DEBUG_ANY,
1150                                 "send_search_entry: conn %lu  ber_printf failed\n",
1151                                 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, "encode end error" );
1155                         rc = rs->sr_err;
1156                         goto error_return;
1157                 }
1158         }
1159
1160         /* free e_flags */
1161         if ( e_flags ) {
1162                 slap_sl_free( e_flags, op->o_tmpmemctx );
1163                 e_flags = NULL;
1164         }
1165
1166         rc = ber_printf( ber, /*{{*/ "}N}" );
1167
1168         if( rc != -1 ) {
1169                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1170         }
1171
1172         if( rc != -1 ) {
1173 #ifdef LDAP_CONNECTIONLESS
1174                 if( op->o_conn && op->o_conn->c_is_udp ) {
1175                         if ( op->o_protocol != LDAP_VERSION2 ) {
1176                                 rc = ber_printf( ber, /*{*/ "N}" );
1177                         }
1178                 } else
1179 #endif
1180                 if ( op->o_res_ber == NULL ) {
1181                         rc = ber_printf( ber, /*{*/ "N}" );
1182                 }
1183         }
1184
1185         if ( rc == -1 ) {
1186                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1187
1188                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1189                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1190                 rc = rs->sr_err;
1191                 goto error_return;
1192         }
1193
1194         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1195             op->o_log_prefix, rs->sr_entry->e_nname.bv_val, 0, 0, 0 );
1196
1197         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1198                 be_entry_release_rw( op, rs->sr_entry, 0 );
1199                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1200                 rs->sr_entry = NULL;
1201         }
1202
1203         if ( op->o_res_ber == NULL ) {
1204                 bytes = send_ldap_ber( op->o_conn, ber );
1205                 ber_free_buf( ber );
1206
1207                 if ( bytes < 0 ) {
1208                         Debug( LDAP_DEBUG_ANY,
1209                                 "send_search_entry: conn %lu  ber write failed.\n",
1210                                 op->o_connid, 0, 0 );
1211
1212                         rc = LDAP_UNAVAILABLE;
1213                         goto error_return;
1214                 }
1215                 rs->sr_nentries++;
1216
1217                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1218                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1219                 ldap_pvt_mp_add_ulong( op->o_counters->sc_entries, 1 );
1220                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1221                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1222         }
1223
1224         Debug( LDAP_DEBUG_TRACE,
1225                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1226
1227         rc = LDAP_SUCCESS;
1228
1229 error_return:;
1230         if ( op->o_callback ) {
1231                 (void)slap_cleanup_play( op, rs );
1232         }
1233
1234         if ( e_flags ) {
1235                 slap_sl_free( e_flags, op->o_tmpmemctx );
1236         }
1237
1238         if ( rs->sr_operational_attrs ) {
1239                 attrs_free( rs->sr_operational_attrs );
1240                 rs->sr_operational_attrs = NULL;
1241         }
1242         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1243
1244         /* FIXME: I think rs->sr_type should be explicitly set to
1245          * REP_SEARCH here. That's what it was when we entered this
1246          * function. send_ldap_error may have changed it, but we
1247          * should set it back so that the cleanup functions know
1248          * what they're doing.
1249          */
1250         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1251                 && rs->sr_entry
1252                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1253         {
1254                 entry_free( rs->sr_entry );
1255                 rs->sr_entry = NULL;
1256                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1257         }
1258
1259         return( rc );
1260 }
1261
1262 int
1263 slap_send_search_reference( Operation *op, SlapReply *rs )
1264 {
1265         BerElementBuffer berbuf;
1266         BerElement      *ber = (BerElement *) &berbuf;
1267         int rc = 0;
1268         int bytes;
1269         char *edn = rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)";
1270
1271         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1272         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1273
1274         rs->sr_type = REP_SEARCHREF;
1275         if ( op->o_callback ) {
1276                 rc = slap_response_play( op, rs );
1277                 if ( rc != SLAP_CB_CONTINUE ) {
1278                         goto rel;
1279                 }
1280         }
1281
1282         Debug( LDAP_DEBUG_TRACE,
1283                 "=> send_search_reference: dn=\"%s\"\n",
1284                 edn, 0, 0 );
1285
1286         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1287                 ad_entry, NULL, ACL_READ, NULL ) )
1288         {
1289                 Debug( LDAP_DEBUG_ACL,
1290                         "send_search_reference: access to entry not allowed\n",
1291                     0, 0, 0 );
1292                 rc = 1;
1293                 goto rel;
1294         }
1295
1296         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1297                 ad_ref, NULL, ACL_READ, NULL ) )
1298         {
1299                 Debug( LDAP_DEBUG_ACL,
1300                         "send_search_reference: access "
1301                         "to reference not allowed\n",
1302                     0, 0, 0 );
1303                 rc = 1;
1304                 goto rel;
1305         }
1306
1307         if( op->o_domain_scope ) {
1308                 Debug( LDAP_DEBUG_ANY,
1309                         "send_search_reference: domainScope control in (%s)\n",
1310                         edn, 0, 0 );
1311                 rc = 0;
1312                 goto rel;
1313         }
1314
1315         if( rs->sr_ref == NULL ) {
1316                 Debug( LDAP_DEBUG_ANY,
1317                         "send_search_reference: null ref in (%s)\n",
1318                         edn, 0, 0 );
1319                 rc = 1;
1320                 goto rel;
1321         }
1322
1323         if( op->o_protocol < LDAP_VERSION3 ) {
1324                 rc = 0;
1325                 /* save the references for the result */
1326                 if( rs->sr_ref[0].bv_val != NULL ) {
1327                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1328                                 rc = LDAP_OTHER;
1329                 }
1330                 goto rel;
1331         }
1332
1333 #ifdef LDAP_CONNECTIONLESS
1334         if( op->o_conn && op->o_conn->c_is_udp ) {
1335                 ber = op->o_res_ber;
1336         } else
1337 #endif
1338         {
1339                 ber_init_w_nullc( ber, LBER_USE_DER );
1340                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1341         }
1342
1343         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1344                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1345
1346         if( rc != -1 ) {
1347                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1348         }
1349
1350         if( rc != -1 ) {
1351                 rc = ber_printf( ber, /*"{"*/ "N}" );
1352         }
1353
1354         if ( rc == -1 ) {
1355                 Debug( LDAP_DEBUG_ANY,
1356                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1357
1358 #ifdef LDAP_CONNECTIONLESS
1359                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1360 #endif
1361                 ber_free_buf( ber );
1362                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1363                 goto rel;
1364         }
1365
1366         rc = 0;
1367         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1368                 assert( rs->sr_entry != NULL );
1369                 be_entry_release_rw( op, rs->sr_entry, 0 );
1370                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1371                 rs->sr_entry = NULL;
1372         }
1373
1374 #ifdef LDAP_CONNECTIONLESS
1375         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1376 #endif
1377         bytes = send_ldap_ber( op->o_conn, ber );
1378         ber_free_buf( ber );
1379
1380         if ( bytes < 0 ) {
1381                 rc = LDAP_UNAVAILABLE;
1382         } else {
1383                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1384                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1385                 ldap_pvt_mp_add_ulong( op->o_counters->sc_refs, 1 );
1386                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1387                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1388         }
1389 #ifdef LDAP_CONNECTIONLESS
1390         }
1391 #endif
1392         if ( rs->sr_ref != NULL ) {
1393                 int     r;
1394
1395                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1396                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1397                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1398                                 0, 0 );
1399                 }
1400
1401         } else {
1402                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1403                         op->o_log_prefix, 0, 0, 0, 0 );
1404         }
1405
1406         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1407
1408 rel:
1409         if ( op->o_callback ) {
1410                 (void)slap_cleanup_play( op, rs );
1411         }
1412
1413         return rc;
1414 }
1415
1416 int
1417 str2result(
1418     char        *s,
1419     int         *code,
1420     char        **matched,
1421     char        **info )
1422 {
1423         int     rc;
1424         char    *c;
1425
1426         *code = LDAP_SUCCESS;
1427         *matched = NULL;
1428         *info = NULL;
1429
1430         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1431                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1432                     s, 0, 0 );
1433
1434                 return( -1 );
1435         }
1436
1437         rc = 0;
1438         while ( (s = strchr( s, '\n' )) != NULL ) {
1439                 *s++ = '\0';
1440                 if ( *s == '\0' ) {
1441                         break;
1442                 }
1443                 if ( (c = strchr( s, ':' )) != NULL ) {
1444                         c++;
1445                 }
1446
1447                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1448                         char    *next = NULL;
1449                         long    retcode;
1450
1451                         if ( c == NULL ) {
1452                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
1453                                     s, 0, 0 );
1454                                 rc = -1;
1455                                 continue;
1456                         }
1457
1458                         while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
1459                         if ( c[ 0 ] == '\0' ) {
1460                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
1461                                     s, 0, 0 );
1462                                 rc = -1;
1463                                 continue;
1464                         }
1465
1466                         retcode = strtol( c, &next, 10 );
1467                         if ( next == NULL || next == c ) {
1468                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
1469                                     s, 0, 0 );
1470                                 rc = -1;
1471                                 continue;
1472                         }
1473
1474                         while ( isspace( (unsigned char) next[ 0 ] ) ) next++;
1475                         if ( next[ 0 ] != '\0' ) {
1476                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
1477                                     s, 0, 0 );
1478                                 rc = -1;
1479                                 continue;
1480                         }
1481
1482                         /* FIXME: what if it's larger that max int? */
1483                         *code = (int)retcode;
1484
1485                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1486                         if ( c != NULL ) {
1487                                 *matched = c;
1488                         }
1489                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1490                         if ( c != NULL ) {
1491                                 *info = c;
1492                         }
1493                 } else {
1494                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1495                             s, 0, 0 );
1496
1497                         rc = -1;
1498                 }
1499         }
1500
1501         return( rc );
1502 }
1503
1504 int slap_read_controls(
1505         Operation *op,
1506         SlapReply *rs,
1507         Entry *e,
1508         const struct berval *oid,
1509         LDAPControl **ctrl )
1510 {
1511         int rc;
1512         struct berval bv;
1513         BerElementBuffer berbuf;
1514         BerElement *ber = (BerElement *) &berbuf;
1515         LDAPControl c;
1516         Operation myop;
1517
1518         Debug( LDAP_DEBUG_ANY, "%s slap_read_controls: (%s) %s\n",
1519                 op->o_log_prefix, oid->bv_val, e->e_dn );
1520
1521         rs->sr_entry = e;
1522         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1523                 op->o_preread_attrs : op->o_postread_attrs;
1524
1525         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1526         bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1527
1528         ber_init2( ber, &bv, LBER_USE_DER );
1529         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1530
1531         /* create new operation */
1532         myop = *op;
1533         /* FIXME: o_bd needed for ACL */
1534         myop.o_bd = op->o_bd;
1535         myop.o_res_ber = ber;
1536         myop.o_callback = NULL;
1537         myop.ors_slimit = 1;
1538
1539         rc = slap_send_search_entry( &myop, rs );
1540         if( rc ) return rc;
1541
1542         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1543
1544         if( rc == -1 ) return LDAP_OTHER;
1545
1546         c.ldctl_oid = oid->bv_val;
1547         c.ldctl_iscritical = 0;
1548
1549         if ( *ctrl == NULL ) {
1550                 /* first try */
1551                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1552         } else {
1553                 /* retry: free previous try */
1554                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1555         }
1556
1557         **ctrl = c;
1558         return LDAP_SUCCESS;
1559 }
1560
1561 /* Map API errors to protocol errors... */
1562 int
1563 slap_map_api2result( SlapReply *rs )
1564 {
1565         switch(rs->sr_err) {
1566         case LDAP_SERVER_DOWN:
1567                 return LDAP_UNAVAILABLE;
1568         case LDAP_LOCAL_ERROR:
1569                 return LDAP_OTHER;
1570         case LDAP_ENCODING_ERROR:
1571         case LDAP_DECODING_ERROR:
1572                 return LDAP_PROTOCOL_ERROR;
1573         case LDAP_TIMEOUT:
1574                 return LDAP_UNAVAILABLE;
1575         case LDAP_AUTH_UNKNOWN:
1576                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1577         case LDAP_FILTER_ERROR:
1578                 rs->sr_text = "Filter error";
1579                 return LDAP_OTHER;
1580         case LDAP_USER_CANCELLED:
1581                 rs->sr_text = "User cancelled";
1582                 return LDAP_OTHER;
1583         case LDAP_PARAM_ERROR:
1584                 return LDAP_PROTOCOL_ERROR;
1585         case LDAP_NO_MEMORY:
1586                 return LDAP_OTHER;
1587         case LDAP_CONNECT_ERROR:
1588                 return LDAP_UNAVAILABLE;
1589         case LDAP_NOT_SUPPORTED:
1590                 return LDAP_UNWILLING_TO_PERFORM;
1591         case LDAP_CONTROL_NOT_FOUND:
1592                 return LDAP_PROTOCOL_ERROR;
1593         case LDAP_NO_RESULTS_RETURNED:
1594                 return LDAP_NO_SUCH_OBJECT;
1595         case LDAP_MORE_RESULTS_TO_RETURN:
1596                 rs->sr_text = "More results to return";
1597                 return LDAP_OTHER;
1598         case LDAP_CLIENT_LOOP:
1599         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1600                 return LDAP_LOOP_DETECT;
1601         default:
1602                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1603                 return rs->sr_err;
1604         }
1605 }
1606
1607
1608 slap_mask_t
1609 slap_attr_flags( AttributeName *an )
1610 {
1611         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1612
1613         if ( an == NULL ) {
1614                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1615
1616         } else {
1617                 flags |= an_find( an, &AllOper )
1618                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1619                 flags |= an_find( an, &AllUser )
1620                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1621         }
1622
1623         return flags;
1624 }
1625