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 1998-2013 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 /* SlapReply debugging, prodo-slap.h overrides it in OpenLDAP releases */
 136 #if defined(LDAP_TEST) || (defined(USE_RS_ASSERT) && (USE_RS_ASSERT))
 137
 138 int rs_suppress_assert = 0;
 139
 140 /* RS_ASSERT() helper function */
 141 void rs_assert_(const char*file, unsigned line, const char*fn, const char*cond)
 142 {
 143         int no_assert = rs_suppress_assert, save_errno = errno;
 144         const char *s;
 145
 146         if ( no_assert >= 0 ) {
 147                 if ( no_assert == 0 && (s = getenv( "NO_RS_ASSERT" )) && *s ) {
 148                         no_assert = rs_suppress_assert = atoi( s );
 149                 }
 150                 if ( no_assert > 0 ) {
 151                         errno = save_errno;
 152                         return;
 153                 }
 154         }
 155
 156 #ifdef rs_assert_       /* proto-slap.h #defined away the fn parameter */
 157         fprintf( stderr,"%s:%u: "  "RS_ASSERT(%s) failed.\n", file,line,cond );
 158 #else
 159         fprintf( stderr,"%s:%u: %s: RS_ASSERT(%s) failed.\n", file,line,fn,cond );
 160 #endif
 161         fflush( stderr );
 162
 163         errno = save_errno;
 164         /* $NO_RS_ASSERT > 0: ignore rs_asserts, 0: abort, < 0: just warn */
 165         if ( !no_assert /* from $NO_RS_ASSERT */ ) abort();
 166 }
 167
 168 /* SlapReply is consistent */
 169 void
 170 (rs_assert_ok)( const SlapReply *rs )
 171 {
 172         const slap_mask_t flags = rs->sr_flags;
 173
 174         if ( flags & REP_ENTRY_MASK ) {
 175                 RS_ASSERT( !(flags & REP_ENTRY_MUSTRELEASE)
 176                         || !(flags & (REP_ENTRY_MASK ^ REP_ENTRY_MUSTRELEASE)) );
 177                 RS_ASSERT( rs->sr_entry != NULL );
 178                 RS_ASSERT( (1 << rs->sr_type) &
 179                         ((1 << REP_SEARCH) | (1 << REP_SEARCHREF) |
 180                          (1 << REP_RESULT) | (1 << REP_GLUE_RESULT)) );
 181         }
 182 #if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */
 183         if ( (flags & (REP_MATCHED_MASK | REP_REF_MASK | REP_CTRLS_MASK)) ) {
 184                 RS_ASSERT( !(flags & REP_MATCHED_MASK) || rs->sr_matched );
 185                 RS_ASSERT( !(flags & REP_CTRLS_MASK  ) || rs->sr_ctrls   );
 186                 /* Note: LDAP_REFERRAL + !sr_ref is OK, becomes LDAP_NO_SUCH_OBJECT */
 187         }
 188 #if (USE_RS_ASSERT) > 2
 189         if ( rs->sr_err == LDAP_SUCCESS ) {
 190                 RS_ASSERT( rs->sr_text == NULL );
 191                 RS_ASSERT( rs->sr_matched == NULL );
 192         }
 193 #endif
 194 #endif
 195 }
 196
 197 /* Ready for calling a new backend operation */
 198 void
 199 (rs_assert_ready)( const SlapReply *rs )
 200 {
 201         RS_ASSERT( !rs->sr_entry   );
 202 #if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */
 203         RS_ASSERT( !rs->sr_text    );
 204         RS_ASSERT( !rs->sr_ref     );
 205         RS_ASSERT( !rs->sr_matched );
 206         RS_ASSERT( !rs->sr_ctrls   );
 207         RS_ASSERT( !rs->sr_flags   );
 208 #if (USE_RS_ASSERT) > 2
 209         RS_ASSERT( rs->sr_err == LDAP_SUCCESS );
 210 #endif
 211 #else
 212         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 213 #endif
 214 }
 215
 216 /* Backend operation done */
 217 void
 218 (rs_assert_done)( const SlapReply *rs )
 219 {
 220 #if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */
 221         RS_ASSERT( !(rs->sr_flags & ~(REP_ENTRY_MODIFIABLE|REP_NO_OPERATIONALS)) );
 222         rs_assert_ok( rs );
 223 #else
 224         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MUSTFLUSH) );
 225 #endif
 226 }
 227
 228 #endif /* LDAP_TEST || USE_RS_ASSERT */
 229
 230 /* Reset a used SlapReply whose contents has been flushed (freed/released) */
 231 void
 232 (rs_reinit)( SlapReply *rs, slap_reply_t type )
 233 {
 234         rs_reinit( rs, type );          /* proto-slap.h macro */
 235 }
 236
 237 /* Obey and clear rs->sr_flags & REP_ENTRY_MASK.  Clear sr_entry if freed. */
 238 void
 239 rs_flush_entry( Operation *op, SlapReply *rs, slap_overinst *on )
 240 {
 241         rs_assert_ok( rs );
 242
 243         if ( (rs->sr_flags & REP_ENTRY_MUSTFLUSH) && rs->sr_entry != NULL ) {
 244                 if ( !(rs->sr_flags & REP_ENTRY_MUSTRELEASE) ) {
 245                         entry_free( rs->sr_entry );
 246                 } else if ( on != NULL ) {
 247                         overlay_entry_release_ov( op, rs->sr_entry, 0, on );
 248                 } else {
 249                         be_entry_release_rw( op, rs->sr_entry, 0 );
 250                 }
 251                 rs->sr_entry = NULL;
 252         }
 253
 254         rs->sr_flags &= ~REP_ENTRY_MASK;
 255 }
 256
 257 /* Set rs->sr_entry after obeying and clearing sr_flags & REP_ENTRY_MASK. */
 258 void
 259 rs_replace_entry( Operation *op, SlapReply *rs, slap_overinst *on, Entry *e )
 260 {
 261         rs_flush_entry( op, rs, on );
 262         rs->sr_entry = e;
 263 }
 264
 265 /*
 266  * Ensure rs->sr_entry is modifiable, by duplicating it if necessary.
 267  * Obey sr_flags.  Set REP_ENTRY_<MODIFIABLE, and MUSTBEFREED if duplicated>.
 268  * Return nonzero if rs->sr_entry was replaced.
 269  */
 270 int
 271 rs_entry2modifiable( Operation *op, SlapReply *rs, slap_overinst *on )
 272 {
 273         if ( rs->sr_flags & REP_ENTRY_MODIFIABLE ) {
 274                 rs_assert_ok( rs );
 275                 return 0;
 276         }
 277         rs_replace_entry( op, rs, on, entry_dup( rs->sr_entry ));
 278         rs->sr_flags |= REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED;
 279         return 1;
 280 }
 281
 282 static long send_ldap_ber(
 283         Operation *op,
 284         BerElement *ber )
 285 {
 286         Connection *conn = op->o_conn;
 287         ber_len_t bytes;
 288         long ret = 0;
 289
 290         ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
 291
 292         /* write only one pdu at a time - wait til it's our turn */
 293         ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 294         if (( op->o_abandon && !op->o_cancel ) || !connection_valid( conn ) ||
 295                 conn->c_writers < 0 ) {
 296                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 297                 return 0;
 298         }
 299
 300         conn->c_writers++;
 301
 302         while ( conn->c_writers > 0 && conn->c_writing ) {
 303                 ldap_pvt_thread_cond_wait( &conn->c_write1_cv, &conn->c_write1_mutex );
 304         }
 305
 306         /* connection was closed under us */
 307         if ( conn->c_writers < 0 ) {
 308                 /* we're the last waiter, let the closer continue */
 309                 if ( conn->c_writers == -1 )
 310                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 311                 conn->c_writers++;
 312                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 313                 return 0;
 314         }
 315
 316         /* Our turn */
 317         conn->c_writing = 1;
 318
 319         /* write the pdu */
 320         while( 1 ) {
 321                 int err;
 322
 323                 if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) {
 324                         ret = bytes;
 325                         break;
 326                 }
 327
 328                 err = sock_errno();
 329
 330                 /*
 331                  * we got an error.  if it's ewouldblock, we need to
 332                  * wait on the socket being writable.  otherwise, figure
 333                  * it's a hard error and return.
 334                  */
 335
 336                 Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n",
 337                     err, sock_errstr(err), 0 );
 338
 339                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 340                         conn->c_writers--;
 341                         conn->c_writing = 0;
 342                         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 343                         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 344                         connection_closing( conn, "connection lost on write" );
 345
 346                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 347                         return -1;
 348                 }
 349
 350                 /* wait for socket to be write-ready */
 351                 ldap_pvt_thread_mutex_lock( &conn->c_write2_mutex );
 352                 conn->c_writewaiter = 1;
 353                 slapd_set_write( conn->c_sd, 2 );
 354
 355                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 356                 ldap_pvt_thread_pool_idle( &connection_pool );
 357                 ldap_pvt_thread_cond_wait( &conn->c_write2_cv, &conn->c_write2_mutex );
 358                 conn->c_writewaiter = 0;
 359                 ldap_pvt_thread_mutex_unlock( &conn->c_write2_mutex );
 360                 ldap_pvt_thread_pool_unidle( &connection_pool );
 361                 ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 362                 if ( conn->c_writers < 0 ) {
 363                         ret = 0;
 364                         break;
 365                 }
 366         }
 367
 368         conn->c_writing = 0;
 369         if ( conn->c_writers < 0 ) {
 370                 conn->c_writers++;
 371                 if ( !conn->c_writers )
 372                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 373         } else {
 374                 conn->c_writers--;
 375                 ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 376         }
 377         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 378
 379         return ret;
 380 }
 381
 382 static int
 383 send_ldap_control( BerElement *ber, LDAPControl *c )
 384 {
 385         int rc;
 386
 387         assert( c != NULL );
 388
 389         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 390
 391         if( c->ldctl_iscritical ) {
 392                 rc = ber_printf( ber, "b",
 393                         (ber_int_t) c->ldctl_iscritical ) ;
 394                 if( rc == -1 ) return rc;
 395         }
 396
 397         if( c->ldctl_value.bv_val != NULL ) {
 398                 rc = ber_printf( ber, "O", &c->ldctl_value );
 399                 if( rc == -1 ) return rc;
 400         }
 401
 402         rc = ber_printf( ber, /*{*/"N}" );
 403         if( rc == -1 ) return rc;
 404
 405         return 0;
 406 }
 407
 408 static int
 409 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 410 {
 411         int rc;
 412
 413         if( c == NULL )
 414                 return 0;
 415
 416         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 417         if( rc == -1 ) return rc;
 418
 419         for( ; *c != NULL; c++) {
 420                 rc = send_ldap_control( ber, *c );
 421                 if( rc == -1 ) return rc;
 422         }
 423
 424 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 425         /* this is a hack to avoid having to modify op->s_ctrls */
 426         if( o->o_sortedresults ) {
 427                 BerElementBuffer berbuf;
 428                 BerElement *sber = (BerElement *) &berbuf;
 429                 LDAPControl sorted;
 430                 BER_BVZERO( &sorted.ldctl_value );
 431                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 432                 sorted.ldctl_iscritical = 0;
 433
 434                 ber_init2( sber, NULL, LBER_USE_DER );
 435
 436                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 437
 438                 if( ber_flatten2( sber, &sorted.ldctl_value, 0 ) == -1 ) {
 439                         return -1;
 440                 }
 441
 442                 (void) ber_free_buf( sber );
 443
 444                 rc = send_ldap_control( ber, &sorted );
 445                 if( rc == -1 ) return rc;
 446         }
 447 #endif
 448
 449         rc = ber_printf( ber, /*{*/"N}" );
 450
 451         return rc;
 452 }
 453
 454 /*
 455  * slap_response_play()
 456  *
 457  * plays the callback list; rationale: a callback can
 458  *   - remove itself from the list, by setting op->o_callback = NULL;
 459  *     malloc()'ed callbacks should free themselves from inside the
 460  *     sc_response() function.
 461  *   - replace itself with another (list of) callback(s), by setting
 462  *     op->o_callback = a new (list of) callback(s); in this case, it
 463  *     is the callback's responsibility to to append existing subsequent
 464  *     callbacks to the end of the list that is passed to the sc_response()
 465  *     function.
 466  *   - modify the list of subsequent callbacks by modifying the value
 467  *     of the sc_next field from inside the sc_response() function; this
 468  *     case does not require any handling from inside slap_response_play()
 469  *
 470  * To stop execution of the playlist, the sc_response() function must return
 471  * a value different from SLAP_SC_CONTINUE.
 472  *
 473  * The same applies to slap_cleanup_play(); only, there is no means to stop
 474  * execution of the playlist, since all cleanup functions must be called.
 475  */
 476 static int
 477 slap_response_play(
 478         Operation *op,
 479         SlapReply *rs )
 480 {
 481         int rc;
 482
 483         slap_callback   *sc = op->o_callback, **scp;
 484
 485         rc = SLAP_CB_CONTINUE;
 486         for ( scp = &sc; *scp; ) {
 487                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 488
 489                 op->o_callback = *scp;
 490                 if ( op->o_callback->sc_response ) {
 491                         rc = op->o_callback->sc_response( op, rs );
 492                         if ( op->o_callback == NULL ) {
 493                                 /* the callback has been removed;
 494                                  * repair the list */
 495                                 *scp = sc_next;
 496                                 sc_nextp = scp;
 497
 498                         } else if ( op->o_callback != *scp ) {
 499                                 /* a new callback has been inserted
 500                                  * in place of the existing one; repair the list */
 501                                 *scp = op->o_callback;
 502                                 sc_nextp = scp;
 503                         }
 504                         if ( rc != SLAP_CB_CONTINUE ) break;
 505                 }
 506                 scp = sc_nextp;
 507         }
 508
 509         op->o_callback = sc;
 510         return rc;
 511 }
 512
 513 static int
 514 slap_cleanup_play(
 515         Operation *op,
 516         SlapReply *rs )
 517 {
 518         slap_callback   *sc = op->o_callback, **scp;
 519
 520         for ( scp = &sc; *scp; ) {
 521                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 522
 523                 op->o_callback = *scp;
 524                 if ( op->o_callback->sc_cleanup ) {
 525                         (void)op->o_callback->sc_cleanup( op, rs );
 526                         if ( op->o_callback == NULL ) {
 527                                 /* the callback has been removed;
 528                                  * repair the list */
 529                                 *scp = sc_next;
 530                                 sc_nextp = scp;
 531
 532                         } else if ( op->o_callback != *scp ) {
 533                                 /* a new callback has been inserted
 534                                  * after the existing one; repair the list */
 535                                 /* a new callback has been inserted
 536                                  * in place of the existing one; repair the list */
 537                                 *scp = op->o_callback;
 538                                 sc_nextp = scp;
 539                         }
 540                         /* don't care about the result; do all cleanup */
 541                 }
 542                 scp = sc_nextp;
 543         }
 544
 545         op->o_callback = sc;
 546         return LDAP_SUCCESS;
 547 }
 548
 549 static int
 550 send_ldap_response(
 551         Operation *op,
 552         SlapReply *rs )
 553 {
 554         BerElementBuffer berbuf;
 555         BerElement      *ber = (BerElement *) &berbuf;
 556         int             rc = LDAP_SUCCESS;
 557         long    bytes;
 558
 559         /* op was actually aborted, bypass everything if client didn't Cancel */
 560         if (( rs->sr_err == SLAPD_ABANDON ) && !op->o_cancel ) {
 561                 rc = SLAPD_ABANDON;
 562                 goto clean2;
 563         }
 564
 565         if ( op->o_callback ) {
 566                 rc = slap_response_play( op, rs );
 567                 if ( rc != SLAP_CB_CONTINUE ) {
 568                         goto clean2;
 569                 }
 570         }
 571
 572         /* op completed, connection aborted, bypass sending response */
 573         if ( op->o_abandon && !op->o_cancel ) {
 574                 rc = SLAPD_ABANDON;
 575                 goto clean2;
 576         }
 577
 578 #ifdef LDAP_CONNECTIONLESS
 579         if (op->o_conn && op->o_conn->c_is_udp)
 580                 ber = op->o_res_ber;
 581         else
 582 #endif
 583         {
 584                 ber_init_w_nullc( ber, LBER_USE_DER );
 585                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 586         }
 587
 588         rc = rs->sr_err;
 589         if ( rc == SLAPD_ABANDON && op->o_cancel )
 590                 rc = LDAP_CANCELLED;
 591
 592         Debug( LDAP_DEBUG_TRACE,
 593                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 594                 rs->sr_msgid, rs->sr_tag, rc );
 595
 596         if( rs->sr_ref ) {
 597                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 598                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 599                         NULL, NULL );
 600         }
 601
 602 #ifdef LDAP_CONNECTIONLESS
 603         if (op->o_conn && op->o_conn->c_is_udp &&
 604                 op->o_protocol == LDAP_VERSION2 )
 605         {
 606                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 607                         rs->sr_tag, rc,
 608                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 609                 rs->sr_text == NULL ? "" : rs->sr_text );
 610         } else
 611 #endif
 612         if ( rs->sr_type == REP_INTERMEDIATE ) {
 613             rc = ber_printf( ber, "{it{" /*"}}"*/,
 614                         rs->sr_msgid, rs->sr_tag );
 615
 616         } else {
 617             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 618                 rs->sr_msgid, rs->sr_tag, rc,
 619                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 620                 rs->sr_text == NULL ? "" : rs->sr_text );
 621         }
 622
 623         if( rc != -1 ) {
 624                 if ( rs->sr_ref != NULL ) {
 625                         assert( rs->sr_err == LDAP_REFERRAL );
 626                         rc = ber_printf( ber, "t{W}",
 627                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 628                 } else {
 629                         assert( rs->sr_err != LDAP_REFERRAL );
 630                 }
 631         }
 632
 633         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 634                 rc = ber_printf( ber, "tO",
 635                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 636         }
 637
 638         if( rc != -1 &&
 639                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 640         {
 641                 if ( rs->sr_rspoid != NULL ) {
 642                         rc = ber_printf( ber, "ts",
 643                                 rs->sr_type == REP_EXTENDED
 644                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 645                                 rs->sr_rspoid );
 646                 }
 647                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 648                         rc = ber_printf( ber, "tO",
 649                                 rs->sr_type == REP_EXTENDED
 650                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 651                                 rs->sr_rspdata );
 652                 }
 653         }
 654
 655         if( rc != -1 ) {
 656                 rc = ber_printf( ber, /*"{"*/ "N}" );
 657         }
 658
 659         if( rc != -1 ) {
 660                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 661         }
 662
 663         if( rc != -1 ) {
 664                 rc = ber_printf( ber, /*"{"*/ "N}" );
 665         }
 666
 667 #ifdef LDAP_CONNECTIONLESS
 668         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 669                 && rc != -1 )
 670         {
 671                 rc = ber_printf( ber, /*"{"*/ "N}" );
 672         }
 673 #endif
 674
 675         if ( rc == -1 ) {
 676                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 677
 678 #ifdef LDAP_CONNECTIONLESS
 679                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 680 #endif
 681                 {
 682                         ber_free_buf( ber );
 683                 }
 684                 goto cleanup;
 685         }
 686
 687         /* send BER */
 688         bytes = send_ldap_ber( op, ber );
 689 #ifdef LDAP_CONNECTIONLESS
 690         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 691 #endif
 692         {
 693                 ber_free_buf( ber );
 694         }
 695
 696         if ( bytes < 0 ) {
 697                 Debug( LDAP_DEBUG_ANY,
 698                         "send_ldap_response: ber write failed\n",
 699                         0, 0, 0 );
 700
 701                 goto cleanup;
 702         }
 703
 704         ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
 705         ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
 706         ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
 707         ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
 708
 709 cleanup:;
 710         /* Tell caller that we did this for real, as opposed to being
 711          * overridden by a callback
 712          */
 713         rc = SLAP_CB_CONTINUE;
 714
 715 clean2:;
 716         if ( op->o_callback ) {
 717                 (void)slap_cleanup_play( op, rs );
 718         }
 719
 720         if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 721                 rs->sr_flags ^= REP_MATCHED_MUSTBEFREED; /* paranoia */
 722                 if ( rs->sr_matched ) {
 723                         free( (char *)rs->sr_matched );
 724                         rs->sr_matched = NULL;
 725                 }
 726         }
 727
 728         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 729                 rs->sr_flags ^= REP_REF_MUSTBEFREED; /* paranoia */
 730                 if ( rs->sr_ref ) {
 731                         ber_bvarray_free( rs->sr_ref );
 732                         rs->sr_ref = NULL;
 733                 }
 734         }
 735
 736         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
 737                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
 738                 if ( rs->sr_ctrls ) {
 739                         slap_free_ctrls( op, rs->sr_ctrls );
 740                         rs->sr_ctrls = NULL;
 741                 }
 742         }
 743
 744         return rc;
 745 }
 746
 747
 748 void
 749 send_ldap_disconnect( Operation *op, SlapReply *rs )
 750 {
 751 #define LDAP_UNSOLICITED_ERROR(e) \
 752         (  (e) == LDAP_PROTOCOL_ERROR \
 753         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 754         || (e) == LDAP_UNAVAILABLE )
 755
 756         Debug( LDAP_DEBUG_TRACE,
 757                 "send_ldap_disconnect %d:%s\n",
 758                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 759         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 760
 761         /* TODO: Flush the entry if sr_type == REP_SEARCH/REP_SEARCHREF? */
 762         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 763         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
 764
 765         rs->sr_type = REP_EXTENDED;
 766         rs->sr_rspdata = NULL;
 767
 768         if ( op->o_protocol < LDAP_VERSION3 ) {
 769                 rs->sr_rspoid = NULL;
 770                 rs->sr_tag = slap_req2res( op->o_tag );
 771                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 772
 773         } else {
 774                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 775                 rs->sr_tag = LDAP_RES_EXTENDED;
 776                 rs->sr_msgid = LDAP_RES_UNSOLICITED;
 777         }
 778
 779         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 780                 Statslog( LDAP_DEBUG_STATS,
 781                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 782                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 783                         rs->sr_text ? rs->sr_text : "", 0 );
 784         }
 785 }
 786
 787 void
 788 slap_send_ldap_result( Operation *op, SlapReply *rs )
 789 {
 790         char *tmp = NULL;
 791         const char *otext = rs->sr_text;
 792         BerVarray oref = rs->sr_ref;
 793
 794         rs->sr_type = REP_RESULT;
 795
 796         /* Propagate Abandons so that cleanup callbacks can be processed */
 797         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
 798                 goto abandon;
 799
 800         Debug( LDAP_DEBUG_TRACE,
 801                 "send_ldap_result: %s p=%d\n",
 802                 op->o_log_prefix, op->o_protocol, 0 );
 803         Debug( LDAP_DEBUG_ARGS,
 804                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 805                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 806                 rs->sr_text ? rs->sr_text : "" );
 807         if( rs->sr_ref ) {
 808                 Debug( LDAP_DEBUG_ARGS,
 809                         "send_ldap_result: referral=\"%s\"\n",
 810                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 811                         NULL, NULL );
 812         }
 813         assert( !LDAP_API_ERROR( rs->sr_err ) );
 814         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 815
 816         if ( rs->sr_err == LDAP_REFERRAL ) {
 817                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 818
 819                 if( rs->sr_ref == NULL ) {
 820                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 821                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 822                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 823                 }
 824         }
 825
 826         if ( op->o_protocol < LDAP_VERSION3 ) {
 827                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 828                 rs->sr_text = tmp;
 829                 rs->sr_ref = NULL;
 830         }
 831
 832 abandon:
 833         rs->sr_tag = slap_req2res( op->o_tag );
 834         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 835
 836         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 837                 if ( rs->sr_ref == NULL ) {
 838                         rs->sr_flags ^= REP_REF_MUSTBEFREED;
 839                         ber_bvarray_free( oref );
 840                 }
 841                 oref = NULL; /* send_ldap_response() will free rs->sr_ref if != NULL */
 842         }
 843
 844         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 845                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 846                         Statslog( LDAP_DEBUG_STATS,
 847                                 "%s SEARCH RESULT tag=%lu err=%d nentries=%d text=%s\n",
 848                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 849                                 rs->sr_nentries, rs->sr_text ? rs->sr_text : "" );
 850                 } else {
 851                         Statslog( LDAP_DEBUG_STATS,
 852                                 "%s RESULT tag=%lu err=%d text=%s\n",
 853                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 854                                 rs->sr_text ? rs->sr_text : "", 0 );
 855                 }
 856         }
 857
 858         if( tmp != NULL ) ch_free(tmp);
 859         rs->sr_text = otext;
 860         rs->sr_ref = oref;
 861 }
 862
 863 void
 864 send_ldap_sasl( Operation *op, SlapReply *rs )
 865 {
 866         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 867                 rs->sr_err,
 868                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 869
 870         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 871         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
 872
 873         rs->sr_type = REP_SASL;
 874         rs->sr_tag = slap_req2res( op->o_tag );
 875         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 876
 877         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 878                 Statslog( LDAP_DEBUG_STATS,
 879                         "%s RESULT tag=%lu err=%d text=%s\n",
 880                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 881                         rs->sr_text ? rs->sr_text : "", 0 );
 882         }
 883 }
 884
 885 void
 886 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 887 {
 888         Debug( LDAP_DEBUG_TRACE,
 889                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 890                 rs->sr_err,
 891                 rs->sr_rspoid ? rs->sr_rspoid : "",
 892                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 893
 894         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 895         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
 896
 897         rs->sr_type = REP_EXTENDED;
 898         rs->sr_tag = slap_req2res( op->o_tag );
 899         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 900
 901         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 902                 Statslog( LDAP_DEBUG_STATS,
 903                         "%s RESULT oid=%s err=%d text=%s\n",
 904                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 905                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 906         }
 907 }
 908
 909 void
 910 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 911 {
 912         Debug( LDAP_DEBUG_TRACE,
 913                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 914                 rs->sr_err,
 915                 rs->sr_rspoid ? rs->sr_rspoid : "",
 916                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 917
 918         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 919         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
 920
 921         rs->sr_type = REP_INTERMEDIATE;
 922         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 923         rs->sr_msgid = op->o_msgid;
 924         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 925                 Statslog( LDAP_DEBUG_STATS2,
 926                         "%s INTERM oid=%s\n",
 927                         op->o_log_prefix,
 928                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 929         }
 930 }
 931
 932 #define set_ldap_error( rs, err, text ) do { \
 933                 (rs)->sr_err = err; (rs)->sr_text = text; } while(0)
 934
 935 /*
 936  * returns:
 937  *
 938  * LDAP_SUCCESS                 entry sent
 939  * LDAP_OTHER                   entry not sent (other)
 940  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 941  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 942  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 943  */
 944
 945 int
 946 slap_send_search_entry( Operation *op, SlapReply *rs )
 947 {
 948         BerElementBuffer berbuf;
 949         BerElement      *ber = (BerElement *) &berbuf;
 950         Attribute       *a;
 951         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 952         int             userattrs;
 953         AccessControlState acl_state = ACL_STATE_INIT;
 954         int                      attrsonly;
 955         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 956
 957         /* a_flags: array of flags telling if the i-th element will be
 958          *          returned or filtered out
 959          * e_flags: array of a_flags
 960          */
 961         char **e_flags = NULL;
 962
 963         rs->sr_type = REP_SEARCH;
 964
 965         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 966                 rc = LDAP_SIZELIMIT_EXCEEDED;
 967                 goto error_return;
 968         }
 969
 970         /* Every 64 entries, check for thread pool pause */
 971         if ( ( ( rs->sr_nentries & 0x3f ) == 0x3f ) &&
 972                 ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 )
 973         {
 974                 rc = LDAP_BUSY;
 975                 goto error_return;
 976         }
 977
 978         /* eventually will loop through generated operational attribute types
 979          * currently implemented types include:
 980          *      entryDN, subschemaSubentry, and hasSubordinates */
 981         /* NOTE: moved before overlays callback circling because
 982          * they may modify entry and other stuff in rs */
 983         /* check for special all operational attributes ("+") type */
 984         /* FIXME: maybe we could set this flag at the operation level;
 985          * however, in principle the caller of send_search_entry() may
 986          * change the attribute list at each call */
 987         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 988
 989         rc = backend_operational( op, rs );
 990         if ( rc ) {
 991                 goto error_return;
 992         }
 993
 994         if ( op->o_callback ) {
 995                 rc = slap_response_play( op, rs );
 996                 if ( rc != SLAP_CB_CONTINUE ) {
 997                         goto error_return;
 998                 }
 999         }
1000
1001         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
1002                 op->o_connid, rs->sr_entry->e_name.bv_val,
1003                 op->ors_attrsonly ? " (attrsOnly)" : "" );
1004
1005         attrsonly = op->ors_attrsonly;
1006
1007         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
1008                 Debug( LDAP_DEBUG_ACL,
1009                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
1010                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
1011
1012                 rc = LDAP_INSUFFICIENT_ACCESS;
1013                 goto error_return;
1014         }
1015
1016         if ( op->o_res_ber ) {
1017                 /* read back control or LDAP_CONNECTIONLESS */
1018             ber = op->o_res_ber;
1019         } else {
1020                 struct berval   bv;
1021
1022                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1023                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1024
1025                 ber_init2( ber, &bv, LBER_USE_DER );
1026                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1027         }
1028
1029 #ifdef LDAP_CONNECTIONLESS
1030         if ( op->o_conn && op->o_conn->c_is_udp ) {
1031                 /* CONNECTIONLESS */
1032                 if ( op->o_protocol == LDAP_VERSION2 ) {
1033                 rc = ber_printf(ber, "t{O{" /*}}*/,
1034                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
1035                 } else {
1036                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
1037                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
1038                 }
1039         } else
1040 #endif
1041         if ( op->o_res_ber ) {
1042                 /* read back control */
1043             rc = ber_printf( ber, "t{O{" /*}}*/,
1044                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
1045         } else {
1046             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
1047                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
1048         }
1049
1050         if ( rc == -1 ) {
1051                 Debug( LDAP_DEBUG_ANY,
1052                         "send_search_entry: conn %lu  ber_printf failed\n",
1053                         op->o_connid, 0, 0 );
1054
1055                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1056                 set_ldap_error( rs, LDAP_OTHER, "encoding DN error" );
1057                 rc = rs->sr_err;
1058                 goto error_return;
1059         }
1060
1061         /* check for special all user attributes ("*") type */
1062         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
1063
1064         /* create an array of arrays of flags. Each flag corresponds
1065          * to particular value of attribute and equals 1 if value matches
1066          * to ValuesReturnFilter or 0 if not
1067          */
1068         if ( op->o_vrFilter != NULL ) {
1069                 int     k = 0;
1070                 size_t  size;
1071
1072                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1073                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1074                 }
1075
1076                 size = i * sizeof(char *) + k;
1077                 if ( size > 0 ) {
1078                         char    *a_flags;
1079                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
1080                         if( e_flags == NULL ) {
1081                         Debug( LDAP_DEBUG_ANY,
1082                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
1083                                         op->o_connid, 0, 0 );
1084                                 ber_free( ber, 1 );
1085
1086                                 set_ldap_error( rs, LDAP_OTHER, "out of memory" );
1087                                 goto error_return;
1088                         }
1089                         a_flags = (char *)(e_flags + i);
1090                         memset( a_flags, 0, k );
1091                         for ( a=rs->sr_entry->e_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
1097                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
1098                         if ( rc == -1 ) {
1099                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
1100                                         "conn %lu matched values filtering failed\n",
1101                                         op->o_connid, 0, 0 );
1102                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1103                                 set_ldap_error( rs, LDAP_OTHER,
1104                                         "matched values filtering error" );
1105                                 rc = rs->sr_err;
1106                                 goto error_return;
1107                         }
1108                 }
1109         }
1110
1111         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
1112                 AttributeDescription *desc = a->a_desc;
1113                 int finish = 0;
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 not explicitly requested */
1125                                 if ( !ad_inlist( desc, rs->sr_attrs )) {
1126                                         /* if not all op attrs requested, skip */
1127                                         if ( !SLAP_OPATTRS( rs->sr_attr_flags ))
1128                                                 continue;
1129                                         /* if DSA-specific and replicating, skip */
1130                                         if ( op->o_sync != SLAP_CONTROL_NONE &&
1131                                                 desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
1132                                                 continue;
1133                                 }
1134                         } else {
1135                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1136                                         continue;
1137                                 }
1138                         }
1139                 }
1140
1141                 if ( attrsonly ) {
1142                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1143                                 ACL_READ, &acl_state ) )
1144                         {
1145                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
1146                                         "conn %lu access to attribute %s not allowed\n",
1147                                         op->o_connid, desc->ad_cname.bv_val, 0 );
1148                                 continue;
1149                         }
1150
1151                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
1152                                 Debug( LDAP_DEBUG_ANY,
1153                                         "send_search_entry: conn %lu  ber_printf failed\n",
1154                                         op->o_connid, 0, 0 );
1155
1156                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1157                                 set_ldap_error( rs, LDAP_OTHER,
1158                                         "encoding description error");
1159                                 rc = rs->sr_err;
1160                                 goto error_return;
1161                         }
1162                         finish = 1;
1163
1164                 } else {
1165                         int first = 1;
1166                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
1167                                 if ( ! access_allowed( op, rs->sr_entry,
1168                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
1169                                 {
1170                                         Debug( LDAP_DEBUG_ACL,
1171                                                 "send_search_entry: conn %lu "
1172                                                 "access to attribute %s, value #%d not allowed\n",
1173                                                 op->o_connid, desc->ad_cname.bv_val, i );
1174
1175                                         continue;
1176                                 }
1177
1178                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1179                                         continue;
1180                                 }
1181
1182                                 if ( first ) {
1183                                         first = 0;
1184                                         finish = 1;
1185                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
1186                                                 Debug( LDAP_DEBUG_ANY,
1187                                                         "send_search_entry: conn %lu  ber_printf failed\n",
1188                                                         op->o_connid, 0, 0 );
1189
1190                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1191                                                 set_ldap_error( rs, LDAP_OTHER,
1192                                                         "encoding description error");
1193                                                 rc = rs->sr_err;
1194                                                 goto error_return;
1195                                         }
1196                                 }
1197                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1198                                         Debug( LDAP_DEBUG_ANY,
1199                                                 "send_search_entry: conn %lu  "
1200                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
1201
1202                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1203                                         set_ldap_error( rs, LDAP_OTHER,
1204                                                 "encoding values error" );
1205                                         rc = rs->sr_err;
1206                                         goto error_return;
1207                                 }
1208                         }
1209                 }
1210
1211                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1212                         Debug( LDAP_DEBUG_ANY,
1213                                 "send_search_entry: conn %lu ber_printf failed\n",
1214                                 op->o_connid, 0, 0 );
1215
1216                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1217                         set_ldap_error( rs, LDAP_OTHER, "encode end error" );
1218                         rc = rs->sr_err;
1219                         goto error_return;
1220                 }
1221         }
1222
1223         /* NOTE: moved before overlays callback circling because
1224          * they may modify entry and other stuff in rs */
1225         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
1226                 int     k = 0;
1227                 size_t  size;
1228
1229                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1230                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1231                 }
1232
1233                 size = i * sizeof(char *) + k;
1234                 if ( size > 0 ) {
1235                         char    *a_flags, **tmp;
1236
1237                         /*
1238                          * Reuse previous memory - we likely need less space
1239                          * for operational attributes
1240                          */
1241                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
1242                                 op->o_tmpmemctx );
1243                         if ( tmp == NULL ) {
1244                                 Debug( LDAP_DEBUG_ANY,
1245                                         "send_search_entry: conn %lu "
1246                                         "not enough memory "
1247                                         "for matched values filtering\n",
1248                                         op->o_connid, 0, 0 );
1249                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1250                                 set_ldap_error( rs, LDAP_OTHER,
1251                                         "not enough memory for matched values filtering" );
1252                                 goto error_return;
1253                         }
1254                         e_flags = tmp;
1255                         a_flags = (char *)(e_flags + i);
1256                         memset( a_flags, 0, k );
1257                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1258                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1259                                 e_flags[i] = a_flags;
1260                                 a_flags += j;
1261                         }
1262                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
1263
1264                         if ( rc == -1 ) {
1265                                 Debug( LDAP_DEBUG_ANY,
1266                                         "send_search_entry: conn %lu "
1267                                         "matched values filtering failed\n",
1268                                         op->o_connid, 0, 0);
1269                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1270                                 set_ldap_error( rs, LDAP_OTHER,
1271                                         "matched values filtering error" );
1272                                 rc = rs->sr_err;
1273                                 goto error_return;
1274                         }
1275                 }
1276         }
1277
1278         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1279                 AttributeDescription *desc = a->a_desc;
1280
1281                 if ( rs->sr_attrs == NULL ) {
1282                         /* all user attrs request, skip operational attributes */
1283                         if( is_at_operational( desc->ad_type ) ) {
1284                                 continue;
1285                         }
1286
1287                 } else {
1288                         /* specific attrs requested */
1289                         if( is_at_operational( desc->ad_type ) ) {
1290                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1291                                         !ad_inlist( desc, rs->sr_attrs ) )
1292                                 {
1293                                         continue;
1294                                 }
1295                                 /* if DSA-specific and replicating, skip */
1296                                 if ( op->o_sync != SLAP_CONTROL_NONE &&
1297                                         desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
1298                                         continue;
1299                         } else {
1300                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1301                                         continue;
1302                                 }
1303                         }
1304                 }
1305
1306                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1307                         ACL_READ, &acl_state ) )
1308                 {
1309                         Debug( LDAP_DEBUG_ACL,
1310                                 "send_search_entry: conn %lu "
1311                                 "access to attribute %s not allowed\n",
1312                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1313
1314                         continue;
1315                 }
1316
1317                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1318                 if ( rc == -1 ) {
1319                         Debug( LDAP_DEBUG_ANY,
1320                                 "send_search_entry: conn %lu  "
1321                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1322
1323                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1324                         set_ldap_error( rs, LDAP_OTHER,
1325                                 "encoding description error" );
1326                         rc = rs->sr_err;
1327                         goto error_return;
1328                 }
1329
1330                 if ( ! attrsonly ) {
1331                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1332                                 if ( ! access_allowed( op, rs->sr_entry,
1333                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1334                                 {
1335                                         Debug( LDAP_DEBUG_ACL,
1336                                                 "send_search_entry: conn %lu "
1337                                                 "access to %s, value %d not allowed\n",
1338                                                 op->o_connid, desc->ad_cname.bv_val, i );
1339
1340                                         continue;
1341                                 }
1342
1343                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1344                                         continue;
1345                                 }
1346
1347                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1348                                         Debug( LDAP_DEBUG_ANY,
1349                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1350                                                 op->o_connid, 0, 0 );
1351
1352                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1353                                         set_ldap_error( rs, LDAP_OTHER,
1354                                                 "encoding values error" );
1355                                         rc = rs->sr_err;
1356                                         goto error_return;
1357                                 }
1358                         }
1359                 }
1360
1361                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1362                         Debug( LDAP_DEBUG_ANY,
1363                                 "send_search_entry: conn %lu  ber_printf failed\n",
1364                                 op->o_connid, 0, 0 );
1365
1366                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1367                         set_ldap_error( rs, LDAP_OTHER, "encode end error" );
1368                         rc = rs->sr_err;
1369                         goto error_return;
1370                 }
1371         }
1372
1373         /* free e_flags */
1374         if ( e_flags ) {
1375                 slap_sl_free( e_flags, op->o_tmpmemctx );
1376                 e_flags = NULL;
1377         }
1378
1379         rc = ber_printf( ber, /*{{*/ "}N}" );
1380
1381         if( rc != -1 ) {
1382                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1383         }
1384
1385         if( rc != -1 ) {
1386 #ifdef LDAP_CONNECTIONLESS
1387                 if( op->o_conn && op->o_conn->c_is_udp ) {
1388                         if ( op->o_protocol != LDAP_VERSION2 ) {
1389                                 rc = ber_printf( ber, /*{*/ "N}" );
1390                         }
1391                 } else
1392 #endif
1393                 if ( op->o_res_ber == NULL ) {
1394                         rc = ber_printf( ber, /*{*/ "N}" );
1395                 }
1396         }
1397
1398         if ( rc == -1 ) {
1399                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1400
1401                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1402                 set_ldap_error( rs, LDAP_OTHER, "encode entry end error" );
1403                 rc = rs->sr_err;
1404                 goto error_return;
1405         }
1406
1407         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1408             op->o_log_prefix, rs->sr_entry->e_nname.bv_val, 0, 0, 0 );
1409
1410         rs_flush_entry( op, rs, NULL );
1411
1412         if ( op->o_res_ber == NULL ) {
1413                 bytes = send_ldap_ber( op, ber );
1414                 ber_free_buf( ber );
1415
1416                 if ( bytes < 0 ) {
1417                         Debug( LDAP_DEBUG_ANY,
1418                                 "send_search_entry: conn %lu  ber write failed.\n",
1419                                 op->o_connid, 0, 0 );
1420
1421                         rc = LDAP_UNAVAILABLE;
1422                         goto error_return;
1423                 }
1424                 rs->sr_nentries++;
1425
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_entries, 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
1433         Debug( LDAP_DEBUG_TRACE,
1434                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1435
1436         rc = LDAP_SUCCESS;
1437
1438 error_return:;
1439         if ( op->o_callback ) {
1440                 (void)slap_cleanup_play( op, rs );
1441         }
1442
1443         if ( e_flags ) {
1444                 slap_sl_free( e_flags, op->o_tmpmemctx );
1445         }
1446
1447         /* FIXME: Can break if rs now contains an extended response */
1448         if ( rs->sr_operational_attrs ) {
1449                 attrs_free( rs->sr_operational_attrs );
1450                 rs->sr_operational_attrs = NULL;
1451         }
1452         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1453
1454         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) {
1455                 rs_flush_entry( op, rs, NULL );
1456         } else {
1457                 RS_ASSERT( (rs->sr_flags & REP_ENTRY_MASK) == 0 );
1458         }
1459
1460         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
1461                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
1462                 if ( rs->sr_ctrls ) {
1463                         slap_free_ctrls( op, rs->sr_ctrls );
1464                         rs->sr_ctrls = NULL;
1465                 }
1466         }
1467
1468         return( rc );
1469 }
1470
1471 int
1472 slap_send_search_reference( Operation *op, SlapReply *rs )
1473 {
1474         BerElementBuffer berbuf;
1475         BerElement      *ber = (BerElement *) &berbuf;
1476         int rc = 0;
1477         int bytes;
1478         char *edn = rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)";
1479
1480         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1481         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1482
1483         rs->sr_type = REP_SEARCHREF;
1484         if ( op->o_callback ) {
1485                 rc = slap_response_play( op, rs );
1486                 if ( rc != SLAP_CB_CONTINUE ) {
1487                         goto rel;
1488                 }
1489         }
1490
1491         Debug( LDAP_DEBUG_TRACE,
1492                 "=> send_search_reference: dn=\"%s\"\n",
1493                 edn, 0, 0 );
1494
1495         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1496                 ad_entry, NULL, ACL_READ, NULL ) )
1497         {
1498                 Debug( LDAP_DEBUG_ACL,
1499                         "send_search_reference: access to entry not allowed\n",
1500                     0, 0, 0 );
1501                 rc = 1;
1502                 goto rel;
1503         }
1504
1505         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1506                 ad_ref, NULL, ACL_READ, NULL ) )
1507         {
1508                 Debug( LDAP_DEBUG_ACL,
1509                         "send_search_reference: access "
1510                         "to reference not allowed\n",
1511                     0, 0, 0 );
1512                 rc = 1;
1513                 goto rel;
1514         }
1515
1516         if( op->o_domain_scope ) {
1517                 Debug( LDAP_DEBUG_ANY,
1518                         "send_search_reference: domainScope control in (%s)\n",
1519                         edn, 0, 0 );
1520                 rc = 0;
1521                 goto rel;
1522         }
1523
1524         if( rs->sr_ref == NULL ) {
1525                 Debug( LDAP_DEBUG_ANY,
1526                         "send_search_reference: null ref in (%s)\n",
1527                         edn, 0, 0 );
1528                 rc = 1;
1529                 goto rel;
1530         }
1531
1532         if( op->o_protocol < LDAP_VERSION3 ) {
1533                 rc = 0;
1534                 /* save the references for the result */
1535                 if( rs->sr_ref[0].bv_val != NULL ) {
1536                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1537                                 rc = LDAP_OTHER;
1538                 }
1539                 goto rel;
1540         }
1541
1542 #ifdef LDAP_CONNECTIONLESS
1543         if( op->o_conn && op->o_conn->c_is_udp ) {
1544                 ber = op->o_res_ber;
1545         } else
1546 #endif
1547         {
1548                 ber_init_w_nullc( ber, LBER_USE_DER );
1549                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1550         }
1551
1552         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1553                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1554
1555         if( rc != -1 ) {
1556                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1557         }
1558
1559         if( rc != -1 ) {
1560                 rc = ber_printf( ber, /*"{"*/ "N}" );
1561         }
1562
1563         if ( rc == -1 ) {
1564                 Debug( LDAP_DEBUG_ANY,
1565                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1566
1567 #ifdef LDAP_CONNECTIONLESS
1568                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1569 #endif
1570                 ber_free_buf( ber );
1571                 set_ldap_error( rs, LDAP_OTHER, "encode DN error" );
1572                 goto rel;
1573         }
1574
1575         rc = 0;
1576         rs_flush_entry( op, rs, NULL );
1577
1578 #ifdef LDAP_CONNECTIONLESS
1579         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1580 #endif
1581         bytes = send_ldap_ber( op, ber );
1582         ber_free_buf( ber );
1583
1584         if ( bytes < 0 ) {
1585                 rc = LDAP_UNAVAILABLE;
1586         } else {
1587                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1588                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1589                 ldap_pvt_mp_add_ulong( op->o_counters->sc_refs, 1 );
1590                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1591                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1592         }
1593 #ifdef LDAP_CONNECTIONLESS
1594         }
1595 #endif
1596         if ( rs->sr_ref != NULL ) {
1597                 int     r;
1598
1599                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1600                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1601                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1602                                 0, 0 );
1603                 }
1604
1605         } else {
1606                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1607                         op->o_log_prefix, 0, 0, 0, 0 );
1608         }
1609
1610         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1611
1612         if ( 0 ) {
1613 rel:
1614             rs_flush_entry( op, rs, NULL );
1615         }
1616
1617         if ( op->o_callback ) {
1618                 (void)slap_cleanup_play( op, rs );
1619         }
1620
1621         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
1622                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
1623                 if ( rs->sr_ctrls ) {
1624                         slap_free_ctrls( op, rs->sr_ctrls );
1625                         rs->sr_ctrls = NULL;
1626                 }
1627         }
1628
1629         return rc;
1630 }
1631
1632 int
1633 str2result(
1634     char        *s,
1635     int         *code,
1636     char        **matched,
1637     char        **info )
1638 {
1639         int     rc;
1640         char    *c;
1641
1642         *code = LDAP_SUCCESS;
1643         *matched = NULL;
1644         *info = NULL;
1645
1646         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1647                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1648                     s, 0, 0 );
1649
1650                 return( -1 );
1651         }
1652
1653         rc = 0;
1654         while ( (s = strchr( s, '\n' )) != NULL ) {
1655                 *s++ = '\0';
1656                 if ( *s == '\0' ) {
1657                         break;
1658                 }
1659                 if ( (c = strchr( s, ':' )) != NULL ) {
1660                         c++;
1661                 }
1662
1663                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1664                         char    *next = NULL;
1665                         long    retcode;
1666
1667                         if ( c == NULL ) {
1668                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
1669                                     s, 0, 0 );
1670                                 rc = -1;
1671                                 continue;
1672                         }
1673
1674                         while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
1675                         if ( c[ 0 ] == '\0' ) {
1676                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
1677                                     s, 0, 0 );
1678                                 rc = -1;
1679                                 continue;
1680                         }
1681
1682                         retcode = strtol( c, &next, 10 );
1683                         if ( next == NULL || next == c ) {
1684                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
1685                                     s, 0, 0 );
1686                                 rc = -1;
1687                                 continue;
1688                         }
1689
1690                         while ( isspace( (unsigned char) next[ 0 ] ) && next[ 0 ] != '\n' )
1691                                 next++;
1692                         if ( next[ 0 ] != '\0' && next[ 0 ] != '\n' ) {
1693                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
1694                                     s, 0, 0 );
1695                                 rc = -1;
1696                                 continue;
1697                         }
1698
1699                         /* FIXME: what if it's larger than max int? */
1700                         *code = (int)retcode;
1701
1702                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1703                         if ( c != NULL ) {
1704                                 *matched = c;
1705                         }
1706                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1707                         if ( c != NULL ) {
1708                                 *info = c;
1709                         }
1710                 } else {
1711                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1712                             s, 0, 0 );
1713
1714                         rc = -1;
1715                 }
1716         }
1717
1718         return( rc );
1719 }
1720
1721 int slap_read_controls(
1722         Operation *op,
1723         SlapReply *rs,
1724         Entry *e,
1725         const struct berval *oid,
1726         LDAPControl **ctrl )
1727 {
1728         int rc;
1729         struct berval bv;
1730         BerElementBuffer berbuf;
1731         BerElement *ber = (BerElement *) &berbuf;
1732         LDAPControl c;
1733         Operation myop;
1734
1735         Debug( LDAP_DEBUG_ANY, "%s slap_read_controls: (%s) %s\n",
1736                 op->o_log_prefix, oid->bv_val, e->e_dn );
1737
1738         rs->sr_entry = e;
1739         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1740                 op->o_preread_attrs : op->o_postread_attrs;
1741
1742         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1743         bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1744
1745         ber_init2( ber, &bv, LBER_USE_DER );
1746         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1747
1748         /* create new operation */
1749         myop = *op;
1750         /* FIXME: o_bd needed for ACL */
1751         myop.o_bd = op->o_bd;
1752         myop.o_res_ber = ber;
1753         myop.o_callback = NULL;
1754         myop.ors_slimit = 1;
1755         myop.ors_attrsonly = 0;
1756
1757         rc = slap_send_search_entry( &myop, rs );
1758         if( rc ) return rc;
1759
1760         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1761
1762         if( rc == -1 ) return LDAP_OTHER;
1763
1764         c.ldctl_oid = oid->bv_val;
1765         c.ldctl_iscritical = 0;
1766
1767         if ( *ctrl == NULL ) {
1768                 /* first try */
1769                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1770         } else {
1771                 /* retry: free previous try */
1772                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1773         }
1774
1775         **ctrl = c;
1776         return LDAP_SUCCESS;
1777 }
1778
1779 /* Map API errors to protocol errors... */
1780 int
1781 slap_map_api2result( SlapReply *rs )
1782 {
1783         switch(rs->sr_err) {
1784         case LDAP_SERVER_DOWN:
1785                 return LDAP_UNAVAILABLE;
1786         case LDAP_LOCAL_ERROR:
1787                 return LDAP_OTHER;
1788         case LDAP_ENCODING_ERROR:
1789         case LDAP_DECODING_ERROR:
1790                 return LDAP_PROTOCOL_ERROR;
1791         case LDAP_TIMEOUT:
1792                 return LDAP_UNAVAILABLE;
1793         case LDAP_AUTH_UNKNOWN:
1794                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1795         case LDAP_FILTER_ERROR:
1796                 rs->sr_text = "Filter error";
1797                 return LDAP_OTHER;
1798         case LDAP_USER_CANCELLED:
1799                 rs->sr_text = "User cancelled";
1800                 return LDAP_OTHER;
1801         case LDAP_PARAM_ERROR:
1802                 return LDAP_PROTOCOL_ERROR;
1803         case LDAP_NO_MEMORY:
1804                 return LDAP_OTHER;
1805         case LDAP_CONNECT_ERROR:
1806                 return LDAP_UNAVAILABLE;
1807         case LDAP_NOT_SUPPORTED:
1808                 return LDAP_UNWILLING_TO_PERFORM;
1809         case LDAP_CONTROL_NOT_FOUND:
1810                 return LDAP_PROTOCOL_ERROR;
1811         case LDAP_NO_RESULTS_RETURNED:
1812                 return LDAP_NO_SUCH_OBJECT;
1813         case LDAP_MORE_RESULTS_TO_RETURN:
1814                 rs->sr_text = "More results to return";
1815                 return LDAP_OTHER;
1816         case LDAP_CLIENT_LOOP:
1817         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1818                 return LDAP_LOOP_DETECT;
1819         default:
1820                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1821                 return rs->sr_err;
1822         }
1823 }
1824
1825
1826 slap_mask_t
1827 slap_attr_flags( AttributeName *an )
1828 {
1829         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1830
1831         if ( an == NULL ) {
1832                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1833
1834         } else {
1835                 flags |= an_find( an, slap_bv_all_operational_attrs )
1836                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1837                 flags |= an_find( an, slap_bv_all_user_attrs )
1838                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1839         }
1840
1841         return flags;
1842 }