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 1998-2011 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_ensure_entry_modifiable( 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                 /* lock the connection */
 324                 if ( ldap_pvt_thread_mutex_trylock( &conn->c_mutex )) {
 325                         if ( !connection_valid(conn)) {
 326                                 ret = 0;
 327                                 break;
 328                         }
 329                         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 330                         ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 331                         if ( conn->c_writers < 0 ) {
 332                                 ret = 0;
 333                                 break;
 334                         }
 335                         continue;
 336                 }
 337
 338                 if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) {
 339                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 340                         ret = bytes;
 341                         break;
 342                 }
 343
 344                 err = sock_errno();
 345
 346                 /*
 347                  * we got an error.  if it's ewouldblock, we need to
 348                  * wait on the socket being writable.  otherwise, figure
 349                  * it's a hard error and return.
 350                  */
 351
 352                 Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n",
 353                     err, sock_errstr(err), 0 );
 354
 355                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 356                         conn->c_writers--;
 357                         conn->c_writing = 0;
 358                         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 359                         connection_closing( conn, "connection lost on write" );
 360
 361                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 362                         return -1;
 363                 }
 364
 365                 /* wait for socket to be write-ready */
 366                 ldap_pvt_thread_mutex_lock( &conn->c_write2_mutex );
 367                 conn->c_writewaiter = 1;
 368                 slapd_set_write( conn->c_sd, 2 );
 369
 370                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 371                 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 372                 ldap_pvt_thread_cond_wait( &conn->c_write2_cv, &conn->c_write2_mutex );
 373                 conn->c_writewaiter = 0;
 374                 ldap_pvt_thread_mutex_unlock( &conn->c_write2_mutex );
 375                 ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 376                 if ( conn->c_writers < 0 ) {
 377                         ret = 0;
 378                         break;
 379                 }
 380         }
 381
 382         conn->c_writing = 0;
 383         if ( conn->c_writers < 0 ) {
 384                 conn->c_writers++;
 385                 if ( !conn->c_writers )
 386                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 387         } else {
 388                 conn->c_writers--;
 389                 ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 390         }
 391         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 392
 393         return ret;
 394 }
 395
 396 static int
 397 send_ldap_control( BerElement *ber, LDAPControl *c )
 398 {
 399         int rc;
 400
 401         assert( c != NULL );
 402
 403         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 404
 405         if( c->ldctl_iscritical ) {
 406                 rc = ber_printf( ber, "b",
 407                         (ber_int_t) c->ldctl_iscritical ) ;
 408                 if( rc == -1 ) return rc;
 409         }
 410
 411         if( c->ldctl_value.bv_val != NULL ) {
 412                 rc = ber_printf( ber, "O", &c->ldctl_value );
 413                 if( rc == -1 ) return rc;
 414         }
 415
 416         rc = ber_printf( ber, /*{*/"N}" );
 417         if( rc == -1 ) return rc;
 418
 419         return 0;
 420 }
 421
 422 static int
 423 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 424 {
 425         int rc;
 426
 427         if( c == NULL )
 428                 return 0;
 429
 430         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 431         if( rc == -1 ) return rc;
 432
 433         for( ; *c != NULL; c++) {
 434                 rc = send_ldap_control( ber, *c );
 435                 if( rc == -1 ) return rc;
 436         }
 437
 438 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 439         /* this is a hack to avoid having to modify op->s_ctrls */
 440         if( o->o_sortedresults ) {
 441                 BerElementBuffer berbuf;
 442                 BerElement *sber = (BerElement *) &berbuf;
 443                 LDAPControl sorted;
 444                 BER_BVZERO( &sorted.ldctl_value );
 445                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 446                 sorted.ldctl_iscritical = 0;
 447
 448                 ber_init2( sber, NULL, LBER_USE_DER );
 449
 450                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 451
 452                 if( ber_flatten2( sber, &sorted.ldctl_value, 0 ) == -1 ) {
 453                         return -1;
 454                 }
 455
 456                 (void) ber_free_buf( sber );
 457
 458                 rc = send_ldap_control( ber, &sorted );
 459                 if( rc == -1 ) return rc;
 460         }
 461 #endif
 462
 463         rc = ber_printf( ber, /*{*/"N}" );
 464
 465         return rc;
 466 }
 467
 468 /*
 469  * slap_response_play()
 470  *
 471  * plays the callback list; rationale: a callback can
 472  *   - remove itself from the list, by setting op->o_callback = NULL;
 473  *     malloc()'ed callbacks should free themselves from inside the
 474  *     sc_response() function.
 475  *   - replace itself with another (list of) callback(s), by setting
 476  *     op->o_callback = a new (list of) callback(s); in this case, it
 477  *     is the callback's responsibility to to append existing subsequent
 478  *     callbacks to the end of the list that is passed to the sc_response()
 479  *     function.
 480  *   - modify the list of subsequent callbacks by modifying the value
 481  *     of the sc_next field from inside the sc_response() function; this
 482  *     case does not require any handling from inside slap_response_play()
 483  *
 484  * To stop execution of the playlist, the sc_response() function must return
 485  * a value different from SLAP_SC_CONTINUE.
 486  *
 487  * The same applies to slap_cleanup_play(); only, there is no means to stop
 488  * execution of the playlist, since all cleanup functions must be called.
 489  */
 490 static int
 491 slap_response_play(
 492         Operation *op,
 493         SlapReply *rs )
 494 {
 495         int rc;
 496
 497         slap_callback   *sc = op->o_callback, **scp;
 498
 499         rc = SLAP_CB_CONTINUE;
 500         for ( scp = &sc; *scp; ) {
 501                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 502
 503                 op->o_callback = *scp;
 504                 if ( op->o_callback->sc_response ) {
 505                         rc = op->o_callback->sc_response( op, rs );
 506                         if ( op->o_callback == NULL ) {
 507                                 /* the callback has been removed;
 508                                  * repair the list */
 509                                 *scp = sc_next;
 510                                 sc_nextp = scp;
 511
 512                         } else if ( op->o_callback != *scp ) {
 513                                 /* a new callback has been inserted
 514                                  * in place of the existing one; repair the list */
 515                                 *scp = op->o_callback;
 516                                 sc_nextp = scp;
 517                         }
 518                         if ( rc != SLAP_CB_CONTINUE ) break;
 519                 }
 520                 scp = sc_nextp;
 521         }
 522
 523         op->o_callback = sc;
 524         return rc;
 525 }
 526
 527 static int
 528 slap_cleanup_play(
 529         Operation *op,
 530         SlapReply *rs )
 531 {
 532         slap_callback   *sc = op->o_callback, **scp;
 533
 534         for ( scp = &sc; *scp; ) {
 535                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 536
 537                 op->o_callback = *scp;
 538                 if ( op->o_callback->sc_cleanup ) {
 539                         (void)op->o_callback->sc_cleanup( op, rs );
 540                         if ( op->o_callback == NULL ) {
 541                                 /* the callback has been removed;
 542                                  * repair the list */
 543                                 *scp = sc_next;
 544                                 sc_nextp = scp;
 545
 546                         } else if ( op->o_callback != *scp ) {
 547                                 /* a new callback has been inserted
 548                                  * after the existing one; repair the list */
 549                                 /* a new callback has been inserted
 550                                  * in place of the existing one; repair the list */
 551                                 *scp = op->o_callback;
 552                                 sc_nextp = scp;
 553                         }
 554                         /* don't care about the result; do all cleanup */
 555                 }
 556                 scp = sc_nextp;
 557         }
 558
 559         op->o_callback = sc;
 560         return LDAP_SUCCESS;
 561 }
 562
 563 static int
 564 send_ldap_response(
 565         Operation *op,
 566         SlapReply *rs )
 567 {
 568         BerElementBuffer berbuf;
 569         BerElement      *ber = (BerElement *) &berbuf;
 570         int             rc = LDAP_SUCCESS;
 571         long    bytes;
 572
 573         if (( rs->sr_err == SLAPD_ABANDON || op->o_abandon ) && !op->o_cancel ) {
 574                 rc = SLAPD_ABANDON;
 575                 goto clean2;
 576         }
 577
 578         if ( op->o_callback ) {
 579                 rc = slap_response_play( op, rs );
 580                 if ( rc != SLAP_CB_CONTINUE ) {
 581                         goto clean2;
 582                 }
 583         }
 584
 585 #ifdef LDAP_CONNECTIONLESS
 586         if (op->o_conn && op->o_conn->c_is_udp)
 587                 ber = op->o_res_ber;
 588         else
 589 #endif
 590         {
 591                 ber_init_w_nullc( ber, LBER_USE_DER );
 592                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 593         }
 594
 595         rc = rs->sr_err;
 596         if ( rc == SLAPD_ABANDON && op->o_cancel )
 597                 rc = LDAP_CANCELLED;
 598
 599         Debug( LDAP_DEBUG_TRACE,
 600                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 601                 rs->sr_msgid, rs->sr_tag, rc );
 602
 603         if( rs->sr_ref ) {
 604                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 605                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 606                         NULL, NULL );
 607         }
 608
 609 #ifdef LDAP_CONNECTIONLESS
 610         if (op->o_conn && op->o_conn->c_is_udp &&
 611                 op->o_protocol == LDAP_VERSION2 )
 612         {
 613                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 614                         rs->sr_tag, rc,
 615                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 616                 rs->sr_text == NULL ? "" : rs->sr_text );
 617         } else
 618 #endif
 619         if ( rs->sr_type == REP_INTERMEDIATE ) {
 620             rc = ber_printf( ber, "{it{" /*"}}"*/,
 621                         rs->sr_msgid, rs->sr_tag );
 622
 623         } else {
 624             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 625                 rs->sr_msgid, rs->sr_tag, rc,
 626                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 627                 rs->sr_text == NULL ? "" : rs->sr_text );
 628         }
 629
 630         if( rc != -1 ) {
 631                 if ( rs->sr_ref != NULL ) {
 632                         assert( rs->sr_err == LDAP_REFERRAL );
 633                         rc = ber_printf( ber, "t{W}",
 634                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 635                 } else {
 636                         assert( rs->sr_err != LDAP_REFERRAL );
 637                 }
 638         }
 639
 640         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 641                 rc = ber_printf( ber, "tO",
 642                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 643         }
 644
 645         if( rc != -1 &&
 646                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 647         {
 648                 if ( rs->sr_rspoid != NULL ) {
 649                         rc = ber_printf( ber, "ts",
 650                                 rs->sr_type == REP_EXTENDED
 651                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 652                                 rs->sr_rspoid );
 653                 }
 654                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 655                         rc = ber_printf( ber, "tO",
 656                                 rs->sr_type == REP_EXTENDED
 657                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 658                                 rs->sr_rspdata );
 659                 }
 660         }
 661
 662         if( rc != -1 ) {
 663                 rc = ber_printf( ber, /*"{"*/ "N}" );
 664         }
 665
 666         if( rc != -1 ) {
 667                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 668         }
 669
 670         if( rc != -1 ) {
 671                 rc = ber_printf( ber, /*"{"*/ "N}" );
 672         }
 673
 674 #ifdef LDAP_CONNECTIONLESS
 675         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 676                 && rc != -1 )
 677         {
 678                 rc = ber_printf( ber, /*"{"*/ "N}" );
 679         }
 680 #endif
 681
 682         if ( rc == -1 ) {
 683                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 684
 685 #ifdef LDAP_CONNECTIONLESS
 686                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 687 #endif
 688                 {
 689                         ber_free_buf( ber );
 690                 }
 691                 goto cleanup;
 692         }
 693
 694         /* send BER */
 695         bytes = send_ldap_ber( op, ber );
 696 #ifdef LDAP_CONNECTIONLESS
 697         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 698 #endif
 699         {
 700                 ber_free_buf( ber );
 701         }
 702
 703         if ( bytes < 0 ) {
 704                 Debug( LDAP_DEBUG_ANY,
 705                         "send_ldap_response: ber write failed\n",
 706                         0, 0, 0 );
 707
 708                 goto cleanup;
 709         }
 710
 711         ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
 712         ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
 713         ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
 714         ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
 715
 716 cleanup:;
 717         /* Tell caller that we did this for real, as opposed to being
 718          * overridden by a callback
 719          */
 720         rc = SLAP_CB_CONTINUE;
 721
 722 clean2:;
 723         if ( op->o_callback ) {
 724                 (void)slap_cleanup_play( op, rs );
 725         }
 726
 727         if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 728                 rs->sr_flags ^= REP_MATCHED_MUSTBEFREED; /* paranoia */
 729                 if ( rs->sr_matched ) {
 730                         free( (char *)rs->sr_matched );
 731                         rs->sr_matched = NULL;
 732                 }
 733         }
 734
 735         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 736                 rs->sr_flags ^= REP_REF_MUSTBEFREED; /* paranoia */
 737                 if ( rs->sr_ref ) {
 738                         ber_bvarray_free( rs->sr_ref );
 739                         rs->sr_ref = NULL;
 740                 }
 741         }
 742
 743         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
 744                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
 745                 if ( rs->sr_ctrls ) {
 746                         slap_free_ctrls( op, rs->sr_ctrls );
 747                         rs->sr_ctrls = NULL;
 748                 }
 749         }
 750
 751         return rc;
 752 }
 753
 754
 755 void
 756 send_ldap_disconnect( Operation *op, SlapReply *rs )
 757 {
 758 #define LDAP_UNSOLICITED_ERROR(e) \
 759         (  (e) == LDAP_PROTOCOL_ERROR \
 760         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 761         || (e) == LDAP_UNAVAILABLE )
 762
 763         Debug( LDAP_DEBUG_TRACE,
 764                 "send_ldap_disconnect %d:%s\n",
 765                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 766         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 767
 768         /* TODO: Flush the entry if sr_type == REP_SEARCH/REP_SEARCHREF? */
 769         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 770         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
 771
 772         rs->sr_type = REP_EXTENDED;
 773         rs->sr_rspdata = NULL;
 774
 775         if ( op->o_protocol < LDAP_VERSION3 ) {
 776                 rs->sr_rspoid = NULL;
 777                 rs->sr_tag = slap_req2res( op->o_tag );
 778                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 779
 780         } else {
 781                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 782                 rs->sr_tag = LDAP_RES_EXTENDED;
 783                 rs->sr_msgid = LDAP_RES_UNSOLICITED;
 784         }
 785
 786         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 787                 Statslog( LDAP_DEBUG_STATS,
 788                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 789                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 790                         rs->sr_text ? rs->sr_text : "", 0 );
 791         }
 792 }
 793
 794 void
 795 slap_send_ldap_result( Operation *op, SlapReply *rs )
 796 {
 797         char *tmp = NULL;
 798         const char *otext = rs->sr_text;
 799         BerVarray oref = rs->sr_ref;
 800
 801         rs->sr_type = REP_RESULT;
 802
 803         /* Propagate Abandons so that cleanup callbacks can be processed */
 804         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
 805                 goto abandon;
 806
 807         Debug( LDAP_DEBUG_TRACE,
 808                 "send_ldap_result: %s p=%d\n",
 809                 op->o_log_prefix, op->o_protocol, 0 );
 810         Debug( LDAP_DEBUG_ARGS,
 811                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 812                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 813                 rs->sr_text ? rs->sr_text : "" );
 814         if( rs->sr_ref ) {
 815                 Debug( LDAP_DEBUG_ARGS,
 816                         "send_ldap_result: referral=\"%s\"\n",
 817                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 818                         NULL, NULL );
 819         }
 820         assert( !LDAP_API_ERROR( rs->sr_err ) );
 821         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 822
 823         if ( rs->sr_err == LDAP_REFERRAL ) {
 824                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 825
 826                 if( rs->sr_ref == NULL ) {
 827                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 828                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 829                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 830                 }
 831         }
 832
 833         if ( op->o_protocol < LDAP_VERSION3 ) {
 834                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 835                 rs->sr_text = tmp;
 836                 rs->sr_ref = NULL;
 837         }
 838
 839 abandon:
 840         rs->sr_tag = slap_req2res( op->o_tag );
 841         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 842
 843         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 844                 if ( rs->sr_ref == NULL ) {
 845                         rs->sr_flags ^= REP_REF_MUSTBEFREED;
 846                         ber_bvarray_free( oref );
 847                 }
 848                 oref = NULL; /* send_ldap_response() will free rs->sr_ref if != NULL */
 849         }
 850
 851         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 852                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 853                         Statslog( LDAP_DEBUG_STATS,
 854                                 "%s SEARCH RESULT tag=%lu err=%d nentries=%d text=%s\n",
 855                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 856                                 rs->sr_nentries, rs->sr_text ? rs->sr_text : "" );
 857                 } else {
 858                         Statslog( LDAP_DEBUG_STATS,
 859                                 "%s RESULT tag=%lu err=%d text=%s\n",
 860                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 861                                 rs->sr_text ? rs->sr_text : "", 0 );
 862                 }
 863         }
 864
 865         if( tmp != NULL ) ch_free(tmp);
 866         rs->sr_text = otext;
 867         rs->sr_ref = oref;
 868 }
 869
 870 void
 871 send_ldap_sasl( Operation *op, SlapReply *rs )
 872 {
 873         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 874                 rs->sr_err,
 875                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 876
 877         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 878         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
 879
 880         rs->sr_type = REP_SASL;
 881         rs->sr_tag = slap_req2res( op->o_tag );
 882         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 883
 884         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 885                 Statslog( LDAP_DEBUG_STATS,
 886                         "%s RESULT tag=%lu err=%d text=%s\n",
 887                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 888                         rs->sr_text ? rs->sr_text : "", 0 );
 889         }
 890 }
 891
 892 void
 893 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 894 {
 895         Debug( LDAP_DEBUG_TRACE,
 896                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 897                 rs->sr_err,
 898                 rs->sr_rspoid ? rs->sr_rspoid : "",
 899                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 900
 901         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 902         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
 903
 904         rs->sr_type = REP_EXTENDED;
 905         rs->sr_tag = slap_req2res( op->o_tag );
 906         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 907
 908         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 909                 Statslog( LDAP_DEBUG_STATS,
 910                         "%s RESULT oid=%s err=%d text=%s\n",
 911                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 912                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 913         }
 914 }
 915
 916 void
 917 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 918 {
 919         Debug( LDAP_DEBUG_TRACE,
 920                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 921                 rs->sr_err,
 922                 rs->sr_rspoid ? rs->sr_rspoid : "",
 923                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 924
 925         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 926         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
 927
 928         rs->sr_type = REP_INTERMEDIATE;
 929         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 930         rs->sr_msgid = op->o_msgid;
 931         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 932                 Statslog( LDAP_DEBUG_STATS2,
 933                         "%s INTERM oid=%s\n",
 934                         op->o_log_prefix,
 935                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 936         }
 937 }
 938
 939 /*
 940  * returns:
 941  *
 942  * LDAP_SUCCESS                 entry sent
 943  * LDAP_OTHER                   entry not sent (other)
 944  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 945  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 946  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 947  */
 948
 949 int
 950 slap_send_search_entry( Operation *op, SlapReply *rs )
 951 {
 952         BerElementBuffer berbuf;
 953         BerElement      *ber = (BerElement *) &berbuf;
 954         Attribute       *a;
 955         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 956         int             userattrs;
 957         AccessControlState acl_state = ACL_STATE_INIT;
 958         int                      attrsonly;
 959         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 960
 961         /* a_flags: array of flags telling if the i-th element will be
 962          *          returned or filtered out
 963          * e_flags: array of a_flags
 964          */
 965         char **e_flags = NULL;
 966
 967         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 968                 return LDAP_SIZELIMIT_EXCEEDED;
 969         }
 970
 971         /* Every 64 entries, check for thread pool pause */
 972         if ( ( ( rs->sr_nentries & 0x3f ) == 0x3f ) &&
 973                 ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 )
 974         {
 975                 return LDAP_BUSY;
 976         }
 977
 978         rs->sr_type = REP_SEARCH;
 979
 980         /* eventually will loop through generated operational attribute types
 981          * currently implemented types include:
 982          *      entryDN, subschemaSubentry, and hasSubordinates */
 983         /* NOTE: moved before overlays callback circling because
 984          * they may modify entry and other stuff in rs */
 985         /* check for special all operational attributes ("+") type */
 986         /* FIXME: maybe we could set this flag at the operation level;
 987          * however, in principle the caller of send_search_entry() may
 988          * change the attribute list at each call */
 989         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 990
 991         rc = backend_operational( op, rs );
 992         if ( rc ) {
 993                 goto error_return;
 994         }
 995
 996         if ( op->o_callback ) {
 997                 rc = slap_response_play( op, rs );
 998                 if ( rc != SLAP_CB_CONTINUE ) {
 999                         goto error_return;
1000                 }
1001         }
1002
1003         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
1004                 op->o_connid, rs->sr_entry->e_name.bv_val,
1005                 op->ors_attrsonly ? " (attrsOnly)" : "" );
1006
1007         attrsonly = op->ors_attrsonly;
1008
1009         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
1010                 Debug( LDAP_DEBUG_ACL,
1011                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
1012                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
1013
1014                 rc = LDAP_INSUFFICIENT_ACCESS;
1015                 goto error_return;
1016         }
1017
1018         if ( op->o_res_ber ) {
1019                 /* read back control or LDAP_CONNECTIONLESS */
1020             ber = op->o_res_ber;
1021         } else {
1022                 struct berval   bv;
1023
1024                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1025                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1026
1027                 ber_init2( ber, &bv, LBER_USE_DER );
1028                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1029         }
1030
1031 #ifdef LDAP_CONNECTIONLESS
1032         if ( op->o_conn && op->o_conn->c_is_udp ) {
1033                 /* CONNECTIONLESS */
1034                 if ( op->o_protocol == LDAP_VERSION2 ) {
1035                 rc = ber_printf(ber, "t{O{" /*}}*/,
1036                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
1037                 } else {
1038                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
1039                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
1040                 }
1041         } else
1042 #endif
1043         if ( op->o_res_ber ) {
1044                 /* read back control */
1045             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
1046         } else {
1047             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
1048                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
1049         }
1050
1051         if ( rc == -1 ) {
1052                 Debug( LDAP_DEBUG_ANY,
1053                         "send_search_entry: conn %lu  ber_printf failed\n",
1054                         op->o_connid, 0, 0 );
1055
1056                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1057                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
1058                 rc = rs->sr_err;
1059                 goto error_return;
1060         }
1061
1062         /* check for special all user attributes ("*") type */
1063         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
1064
1065         /* create an array of arrays of flags. Each flag corresponds
1066          * to particular value of attribute and equals 1 if value matches
1067          * to ValuesReturnFilter or 0 if not
1068          */
1069         if ( op->o_vrFilter != NULL ) {
1070                 int     k = 0;
1071                 size_t  size;
1072
1073                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1074                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1075                 }
1076
1077                 size = i * sizeof(char *) + k;
1078                 if ( size > 0 ) {
1079                         char    *a_flags;
1080                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
1081                         if( e_flags == NULL ) {
1082                         Debug( LDAP_DEBUG_ANY,
1083                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
1084                                         op->o_connid, 0, 0 );
1085                                 ber_free( ber, 1 );
1086
1087                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
1088                                 goto error_return;
1089                         }
1090                         a_flags = (char *)(e_flags + i);
1091                         memset( a_flags, 0, k );
1092                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
1093                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1094                                 e_flags[i] = a_flags;
1095                                 a_flags += j;
1096                         }
1097
1098                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
1099                         if ( rc == -1 ) {
1100                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
1101                                         "conn %lu matched values filtering failed\n",
1102                                         op->o_connid, 0, 0 );
1103                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1104                                 send_ldap_error( op, rs, LDAP_OTHER,
1105                                         "matched values filtering error" );
1106                                 rc = rs->sr_err;
1107                                 goto error_return;
1108                         }
1109                 }
1110         }
1111
1112         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
1113                 AttributeDescription *desc = a->a_desc;
1114                 int finish = 0;
1115
1116                 if ( rs->sr_attrs == NULL ) {
1117                         /* all user attrs request, skip operational attributes */
1118                         if( is_at_operational( desc->ad_type ) ) {
1119                                 continue;
1120                         }
1121
1122                 } else {
1123                         /* specific attrs requested */
1124                         if ( is_at_operational( desc->ad_type ) ) {
1125                                 /* if not explicitly requested */
1126                                 if ( !ad_inlist( desc, rs->sr_attrs )) {
1127                                         /* if not all op attrs requested, skip */
1128                                         if ( !SLAP_OPATTRS( rs->sr_attr_flags ))
1129                                                 continue;
1130                                         /* if DSA-specific and replicating, skip */
1131                                         if ( op->o_sync != SLAP_CONTROL_NONE &&
1132                                                 desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
1133                                                 continue;
1134                                 }
1135                         } else {
1136                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1137                                         continue;
1138                                 }
1139                         }
1140                 }
1141
1142                 if ( attrsonly ) {
1143                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1144                                 ACL_READ, &acl_state ) )
1145                         {
1146                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
1147                                         "conn %lu access to attribute %s not allowed\n",
1148                                         op->o_connid, desc->ad_cname.bv_val, 0 );
1149                                 continue;
1150                         }
1151
1152                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
1153                                 Debug( LDAP_DEBUG_ANY,
1154                                         "send_search_entry: conn %lu  ber_printf failed\n",
1155                                         op->o_connid, 0, 0 );
1156
1157                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1158                                 send_ldap_error( op, rs, LDAP_OTHER,
1159                                         "encoding description error");
1160                                 rc = rs->sr_err;
1161                                 goto error_return;
1162                         }
1163                         finish = 1;
1164
1165                 } else {
1166                         int first = 1;
1167                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
1168                                 if ( ! access_allowed( op, rs->sr_entry,
1169                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
1170                                 {
1171                                         Debug( LDAP_DEBUG_ACL,
1172                                                 "send_search_entry: conn %lu "
1173                                                 "access to attribute %s, value #%d not allowed\n",
1174                                                 op->o_connid, desc->ad_cname.bv_val, i );
1175
1176                                         continue;
1177                                 }
1178
1179                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1180                                         continue;
1181                                 }
1182
1183                                 if ( first ) {
1184                                         first = 0;
1185                                         finish = 1;
1186                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
1187                                                 Debug( LDAP_DEBUG_ANY,
1188                                                         "send_search_entry: conn %lu  ber_printf failed\n",
1189                                                         op->o_connid, 0, 0 );
1190
1191                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1192                                                 send_ldap_error( op, rs, LDAP_OTHER,
1193                                                         "encoding description error");
1194                                                 rc = rs->sr_err;
1195                                                 goto error_return;
1196                                         }
1197                                 }
1198                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1199                                         Debug( LDAP_DEBUG_ANY,
1200                                                 "send_search_entry: conn %lu  "
1201                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
1202
1203                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1204                                         send_ldap_error( op, rs, LDAP_OTHER,
1205                                                 "encoding values error" );
1206                                         rc = rs->sr_err;
1207                                         goto error_return;
1208                                 }
1209                         }
1210                 }
1211
1212                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1213                         Debug( LDAP_DEBUG_ANY,
1214                                 "send_search_entry: conn %lu ber_printf failed\n",
1215                                 op->o_connid, 0, 0 );
1216
1217                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1218                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1219                         rc = rs->sr_err;
1220                         goto error_return;
1221                 }
1222         }
1223
1224         /* NOTE: moved before overlays callback circling because
1225          * they may modify entry and other stuff in rs */
1226         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
1227                 int     k = 0;
1228                 size_t  size;
1229
1230                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1231                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1232                 }
1233
1234                 size = i * sizeof(char *) + k;
1235                 if ( size > 0 ) {
1236                         char    *a_flags, **tmp;
1237
1238                         /*
1239                          * Reuse previous memory - we likely need less space
1240                          * for operational attributes
1241                          */
1242                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
1243                                 op->o_tmpmemctx );
1244                         if ( tmp == NULL ) {
1245                                 Debug( LDAP_DEBUG_ANY,
1246                                         "send_search_entry: conn %lu "
1247                                         "not enough memory "
1248                                         "for matched values filtering\n",
1249                                         op->o_connid, 0, 0 );
1250                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1251                                 send_ldap_error( op, rs, LDAP_OTHER,
1252                                         "not enough memory for matched values filtering" );
1253                                 goto error_return;
1254                         }
1255                         e_flags = tmp;
1256                         a_flags = (char *)(e_flags + i);
1257                         memset( a_flags, 0, k );
1258                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1259                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1260                                 e_flags[i] = a_flags;
1261                                 a_flags += j;
1262                         }
1263                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
1264
1265                         if ( rc == -1 ) {
1266                                 Debug( LDAP_DEBUG_ANY,
1267                                         "send_search_entry: conn %lu "
1268                                         "matched values filtering failed\n",
1269                                         op->o_connid, 0, 0);
1270                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1271                                 send_ldap_error( op, rs, LDAP_OTHER,
1272                                         "matched values filtering error" );
1273                                 rc = rs->sr_err;
1274                                 goto error_return;
1275                         }
1276                 }
1277         }
1278
1279         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1280                 AttributeDescription *desc = a->a_desc;
1281
1282                 if ( rs->sr_attrs == NULL ) {
1283                         /* all user attrs request, skip operational attributes */
1284                         if( is_at_operational( desc->ad_type ) ) {
1285                                 continue;
1286                         }
1287
1288                 } else {
1289                         /* specific attrs requested */
1290                         if( is_at_operational( desc->ad_type ) ) {
1291                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1292                                         !ad_inlist( desc, rs->sr_attrs ) )
1293                                 {
1294                                         continue;
1295                                 }
1296                         } else {
1297                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1298                                         continue;
1299                                 }
1300                         }
1301                 }
1302
1303                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1304                         ACL_READ, &acl_state ) )
1305                 {
1306                         Debug( LDAP_DEBUG_ACL,
1307                                 "send_search_entry: conn %lu "
1308                                 "access to attribute %s not allowed\n",
1309                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1310
1311                         continue;
1312                 }
1313
1314                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1315                 if ( rc == -1 ) {
1316                         Debug( LDAP_DEBUG_ANY,
1317                                 "send_search_entry: conn %lu  "
1318                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1319
1320                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1321                         send_ldap_error( op, rs, LDAP_OTHER,
1322                                 "encoding description error" );
1323                         rc = rs->sr_err;
1324                         goto error_return;
1325                 }
1326
1327                 if ( ! attrsonly ) {
1328                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1329                                 if ( ! access_allowed( op, rs->sr_entry,
1330                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1331                                 {
1332                                         Debug( LDAP_DEBUG_ACL,
1333                                                 "send_search_entry: conn %lu "
1334                                                 "access to %s, value %d not allowed\n",
1335                                                 op->o_connid, desc->ad_cname.bv_val, i );
1336
1337                                         continue;
1338                                 }
1339
1340                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1341                                         continue;
1342                                 }
1343
1344                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1345                                         Debug( LDAP_DEBUG_ANY,
1346                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1347                                                 op->o_connid, 0, 0 );
1348
1349                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1350                                         send_ldap_error( op, rs, LDAP_OTHER,
1351                                                 "encoding values error" );
1352                                         rc = rs->sr_err;
1353                                         goto error_return;
1354                                 }
1355                         }
1356                 }
1357
1358                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1359                         Debug( LDAP_DEBUG_ANY,
1360                                 "send_search_entry: conn %lu  ber_printf failed\n",
1361                                 op->o_connid, 0, 0 );
1362
1363                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1364                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1365                         rc = rs->sr_err;
1366                         goto error_return;
1367                 }
1368         }
1369
1370         /* free e_flags */
1371         if ( e_flags ) {
1372                 slap_sl_free( e_flags, op->o_tmpmemctx );
1373                 e_flags = NULL;
1374         }
1375
1376         rc = ber_printf( ber, /*{{*/ "}N}" );
1377
1378         if( rc != -1 ) {
1379                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1380         }
1381
1382         if( rc != -1 ) {
1383 #ifdef LDAP_CONNECTIONLESS
1384                 if( op->o_conn && op->o_conn->c_is_udp ) {
1385                         if ( op->o_protocol != LDAP_VERSION2 ) {
1386                                 rc = ber_printf( ber, /*{*/ "N}" );
1387                         }
1388                 } else
1389 #endif
1390                 if ( op->o_res_ber == NULL ) {
1391                         rc = ber_printf( ber, /*{*/ "N}" );
1392                 }
1393         }
1394
1395         if ( rc == -1 ) {
1396                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1397
1398                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1399                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1400                 rc = rs->sr_err;
1401                 goto error_return;
1402         }
1403
1404         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1405             op->o_log_prefix, rs->sr_entry->e_nname.bv_val, 0, 0, 0 );
1406
1407         rs_flush_entry( op, rs, NULL );
1408
1409         if ( op->o_res_ber == NULL ) {
1410                 bytes = send_ldap_ber( op, ber );
1411                 ber_free_buf( ber );
1412
1413                 if ( bytes < 0 ) {
1414                         Debug( LDAP_DEBUG_ANY,
1415                                 "send_search_entry: conn %lu  ber write failed.\n",
1416                                 op->o_connid, 0, 0 );
1417
1418                         rc = LDAP_UNAVAILABLE;
1419                         goto error_return;
1420                 }
1421                 rs->sr_nentries++;
1422
1423                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1424                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1425                 ldap_pvt_mp_add_ulong( op->o_counters->sc_entries, 1 );
1426                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1427                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1428         }
1429
1430         Debug( LDAP_DEBUG_TRACE,
1431                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1432
1433         rc = LDAP_SUCCESS;
1434
1435 error_return:;
1436         if ( op->o_callback ) {
1437                 (void)slap_cleanup_play( op, rs );
1438         }
1439
1440         if ( e_flags ) {
1441                 slap_sl_free( e_flags, op->o_tmpmemctx );
1442         }
1443
1444         /* FIXME: Can break if rs now contains an extended response */
1445         if ( rs->sr_operational_attrs ) {
1446                 attrs_free( rs->sr_operational_attrs );
1447                 rs->sr_operational_attrs = NULL;
1448         }
1449         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1450
1451         /* FIXME: I think rs->sr_type should be explicitly set to
1452          * REP_SEARCH here. That's what it was when we entered this
1453          * function. send_ldap_error may have changed it, but we
1454          * should set it back so that the cleanup functions know
1455          * what they're doing.
1456          *
1457          * ...No, that's what we set it to on entering this function.
1458          * And we may have to clear out rs->sr_un.sru_search first,
1459          * if it can contain data from sr_un.sru_extended.
1460          */
1461         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) {
1462                 rs_flush_entry( op, rs, NULL );
1463         } else {
1464                 RS_ASSERT( (rs->sr_flags & REP_ENTRY_MASK) == 0 );
1465         }
1466
1467         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
1468                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
1469                 if ( rs->sr_ctrls ) {
1470                         slap_free_ctrls( op, rs->sr_ctrls );
1471                         rs->sr_ctrls = NULL;
1472                 }
1473         }
1474
1475         return( rc );
1476 }
1477
1478 int
1479 slap_send_search_reference( Operation *op, SlapReply *rs )
1480 {
1481         BerElementBuffer berbuf;
1482         BerElement      *ber = (BerElement *) &berbuf;
1483         int rc = 0;
1484         int bytes;
1485         char *edn = rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)";
1486
1487         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1488         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1489
1490         rs->sr_type = REP_SEARCHREF;
1491         if ( op->o_callback ) {
1492                 rc = slap_response_play( op, rs );
1493                 if ( rc != SLAP_CB_CONTINUE ) {
1494                         goto rel;
1495                 }
1496         }
1497
1498         Debug( LDAP_DEBUG_TRACE,
1499                 "=> send_search_reference: dn=\"%s\"\n",
1500                 edn, 0, 0 );
1501
1502         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1503                 ad_entry, NULL, ACL_READ, NULL ) )
1504         {
1505                 Debug( LDAP_DEBUG_ACL,
1506                         "send_search_reference: access to entry not allowed\n",
1507                     0, 0, 0 );
1508                 rc = 1;
1509                 goto rel;
1510         }
1511
1512         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1513                 ad_ref, NULL, ACL_READ, NULL ) )
1514         {
1515                 Debug( LDAP_DEBUG_ACL,
1516                         "send_search_reference: access "
1517                         "to reference not allowed\n",
1518                     0, 0, 0 );
1519                 rc = 1;
1520                 goto rel;
1521         }
1522
1523         if( op->o_domain_scope ) {
1524                 Debug( LDAP_DEBUG_ANY,
1525                         "send_search_reference: domainScope control in (%s)\n",
1526                         edn, 0, 0 );
1527                 rc = 0;
1528                 goto rel;
1529         }
1530
1531         if( rs->sr_ref == NULL ) {
1532                 Debug( LDAP_DEBUG_ANY,
1533                         "send_search_reference: null ref in (%s)\n",
1534                         edn, 0, 0 );
1535                 rc = 1;
1536                 goto rel;
1537         }
1538
1539         if( op->o_protocol < LDAP_VERSION3 ) {
1540                 rc = 0;
1541                 /* save the references for the result */
1542                 if( rs->sr_ref[0].bv_val != NULL ) {
1543                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1544                                 rc = LDAP_OTHER;
1545                 }
1546                 goto rel;
1547         }
1548
1549 #ifdef LDAP_CONNECTIONLESS
1550         if( op->o_conn && op->o_conn->c_is_udp ) {
1551                 ber = op->o_res_ber;
1552         } else
1553 #endif
1554         {
1555                 ber_init_w_nullc( ber, LBER_USE_DER );
1556                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1557         }
1558
1559         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1560                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1561
1562         if( rc != -1 ) {
1563                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1564         }
1565
1566         if( rc != -1 ) {
1567                 rc = ber_printf( ber, /*"{"*/ "N}" );
1568         }
1569
1570         if ( rc == -1 ) {
1571                 Debug( LDAP_DEBUG_ANY,
1572                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1573
1574 #ifdef LDAP_CONNECTIONLESS
1575                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1576 #endif
1577                 ber_free_buf( ber );
1578                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1579                 goto rel;
1580         }
1581
1582         rc = 0;
1583         rs_flush_entry( op, rs, NULL );
1584
1585 #ifdef LDAP_CONNECTIONLESS
1586         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1587 #endif
1588         bytes = send_ldap_ber( op, ber );
1589         ber_free_buf( ber );
1590
1591         if ( bytes < 0 ) {
1592                 rc = LDAP_UNAVAILABLE;
1593         } else {
1594                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1595                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1596                 ldap_pvt_mp_add_ulong( op->o_counters->sc_refs, 1 );
1597                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1598                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1599         }
1600 #ifdef LDAP_CONNECTIONLESS
1601         }
1602 #endif
1603         if ( rs->sr_ref != NULL ) {
1604                 int     r;
1605
1606                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1607                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1608                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1609                                 0, 0 );
1610                 }
1611
1612         } else {
1613                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1614                         op->o_log_prefix, 0, 0, 0, 0 );
1615         }
1616
1617         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1618
1619 rel:
1620         if ( op->o_callback ) {
1621                 (void)slap_cleanup_play( op, rs );
1622         }
1623
1624         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
1625                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
1626                 if ( rs->sr_ctrls ) {
1627                         slap_free_ctrls( op, rs->sr_ctrls );
1628                         rs->sr_ctrls = NULL;
1629                 }
1630         }
1631
1632         return rc;
1633 }
1634
1635 int
1636 str2result(
1637     char        *s,
1638     int         *code,
1639     char        **matched,
1640     char        **info )
1641 {
1642         int     rc;
1643         char    *c;
1644
1645         *code = LDAP_SUCCESS;
1646         *matched = NULL;
1647         *info = NULL;
1648
1649         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1650                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1651                     s, 0, 0 );
1652
1653                 return( -1 );
1654         }
1655
1656         rc = 0;
1657         while ( (s = strchr( s, '\n' )) != NULL ) {
1658                 *s++ = '\0';
1659                 if ( *s == '\0' ) {
1660                         break;
1661                 }
1662                 if ( (c = strchr( s, ':' )) != NULL ) {
1663                         c++;
1664                 }
1665
1666                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1667                         char    *next = NULL;
1668                         long    retcode;
1669
1670                         if ( c == NULL ) {
1671                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
1672                                     s, 0, 0 );
1673                                 rc = -1;
1674                                 continue;
1675                         }
1676
1677                         while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
1678                         if ( c[ 0 ] == '\0' ) {
1679                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
1680                                     s, 0, 0 );
1681                                 rc = -1;
1682                                 continue;
1683                         }
1684
1685                         retcode = strtol( c, &next, 10 );
1686                         if ( next == NULL || next == c ) {
1687                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
1688                                     s, 0, 0 );
1689                                 rc = -1;
1690                                 continue;
1691                         }
1692
1693                         while ( isspace( (unsigned char) next[ 0 ] ) ) next++;
1694                         if ( next[ 0 ] != '\0' ) {
1695                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
1696                                     s, 0, 0 );
1697                                 rc = -1;
1698                                 continue;
1699                         }
1700
1701                         /* FIXME: what if it's larger that max int? */
1702                         *code = (int)retcode;
1703
1704                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1705                         if ( c != NULL ) {
1706                                 *matched = c;
1707                         }
1708                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1709                         if ( c != NULL ) {
1710                                 *info = c;
1711                         }
1712                 } else {
1713                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1714                             s, 0, 0 );
1715
1716                         rc = -1;
1717                 }
1718         }
1719
1720         return( rc );
1721 }
1722
1723 int slap_read_controls(
1724         Operation *op,
1725         SlapReply *rs,
1726         Entry *e,
1727         const struct berval *oid,
1728         LDAPControl **ctrl )
1729 {
1730         int rc;
1731         struct berval bv;
1732         BerElementBuffer berbuf;
1733         BerElement *ber = (BerElement *) &berbuf;
1734         LDAPControl c;
1735         Operation myop;
1736
1737         Debug( LDAP_DEBUG_ANY, "%s slap_read_controls: (%s) %s\n",
1738                 op->o_log_prefix, oid->bv_val, e->e_dn );
1739
1740         rs->sr_entry = e;
1741         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1742                 op->o_preread_attrs : op->o_postread_attrs;
1743
1744         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1745         bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1746
1747         ber_init2( ber, &bv, LBER_USE_DER );
1748         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1749
1750         /* create new operation */
1751         myop = *op;
1752         /* FIXME: o_bd needed for ACL */
1753         myop.o_bd = op->o_bd;
1754         myop.o_res_ber = ber;
1755         myop.o_callback = NULL;
1756         myop.ors_slimit = 1;
1757
1758         rc = slap_send_search_entry( &myop, rs );
1759         if( rc ) return rc;
1760
1761         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1762
1763         if( rc == -1 ) return LDAP_OTHER;
1764
1765         c.ldctl_oid = oid->bv_val;
1766         c.ldctl_iscritical = 0;
1767
1768         if ( *ctrl == NULL ) {
1769                 /* first try */
1770                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1771         } else {
1772                 /* retry: free previous try */
1773                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1774         }
1775
1776         **ctrl = c;
1777         return LDAP_SUCCESS;
1778 }
1779
1780 /* Map API errors to protocol errors... */
1781 int
1782 slap_map_api2result( SlapReply *rs )
1783 {
1784         switch(rs->sr_err) {
1785         case LDAP_SERVER_DOWN:
1786                 return LDAP_UNAVAILABLE;
1787         case LDAP_LOCAL_ERROR:
1788                 return LDAP_OTHER;
1789         case LDAP_ENCODING_ERROR:
1790         case LDAP_DECODING_ERROR:
1791                 return LDAP_PROTOCOL_ERROR;
1792         case LDAP_TIMEOUT:
1793                 return LDAP_UNAVAILABLE;
1794         case LDAP_AUTH_UNKNOWN:
1795                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1796         case LDAP_FILTER_ERROR:
1797                 rs->sr_text = "Filter error";
1798                 return LDAP_OTHER;
1799         case LDAP_USER_CANCELLED:
1800                 rs->sr_text = "User cancelled";
1801                 return LDAP_OTHER;
1802         case LDAP_PARAM_ERROR:
1803                 return LDAP_PROTOCOL_ERROR;
1804         case LDAP_NO_MEMORY:
1805                 return LDAP_OTHER;
1806         case LDAP_CONNECT_ERROR:
1807                 return LDAP_UNAVAILABLE;
1808         case LDAP_NOT_SUPPORTED:
1809                 return LDAP_UNWILLING_TO_PERFORM;
1810         case LDAP_CONTROL_NOT_FOUND:
1811                 return LDAP_PROTOCOL_ERROR;
1812         case LDAP_NO_RESULTS_RETURNED:
1813                 return LDAP_NO_SUCH_OBJECT;
1814         case LDAP_MORE_RESULTS_TO_RETURN:
1815                 rs->sr_text = "More results to return";
1816                 return LDAP_OTHER;
1817         case LDAP_CLIENT_LOOP:
1818         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1819                 return LDAP_LOOP_DETECT;
1820         default:
1821                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1822                 return rs->sr_err;
1823         }
1824 }
1825
1826
1827 slap_mask_t
1828 slap_attr_flags( AttributeName *an )
1829 {
1830         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1831
1832         if ( an == NULL ) {
1833                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1834
1835         } else {
1836                 flags |= an_find( an, slap_bv_all_operational_attrs )
1837                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1838                 flags |= an_find( an, slap_bv_all_user_attrs )
1839                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1840         }
1841
1842         return flags;
1843 }