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 1998-2015 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 #include "ldap_log.h"
  40
  41 /* BSD seems to guarantee that this will be a macro, so... */
  42 #ifndef timersub
  43 #  define timersub(a,b,res) do {                                                                                \
  44                 (res)->tv_sec = (a)->tv_sec - (b)->tv_sec;                                              \
  45                 (res)->tv_usec = (a)->tv_usec - (b)->tv_usec;                                   \
  46                 if ((res)->tv_usec < 0) {                                                                               \
  47                         --(res)->tv_sec;                                                                                        \
  48                         (res)->tv_usec += 1000000;                                                                      \
  49                 }                                                                                                                               \
  50         } while (0)
  51 #endif
  52
  53 const struct berval slap_dummy_bv = BER_BVNULL;
  54
  55 int slap_null_cb( Operation *op, SlapReply *rs )
  56 {
  57         return 0;
  58 }
  59
  60 int slap_freeself_cb( Operation *op, SlapReply *rs )
  61 {
  62         assert( op->o_callback != NULL );
  63
  64         op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
  65         op->o_callback = NULL;
  66
  67         return SLAP_CB_CONTINUE;
  68 }
  69
  70 static char *v2ref( BerVarray ref, const char *text )
  71 {
  72         size_t len = 0, i = 0;
  73         char *v2;
  74
  75         if(ref == NULL) {
  76                 if (text) {
  77                         return ch_strdup(text);
  78                 } else {
  79                         return NULL;
  80                 }
  81         }
  82
  83         if ( text != NULL ) {
  84                 len = strlen( text );
  85                 if (text[len-1] != '\n') {
  86                     i = 1;
  87                 }
  88         }
  89
  90         v2 = ch_malloc( len+i+sizeof("Referral:") );
  91
  92         if( text != NULL ) {
  93                 strcpy(v2, text);
  94                 if( i ) {
  95                         v2[len++] = '\n';
  96                 }
  97         }
  98         strcpy( v2+len, "Referral:" );
  99         len += sizeof("Referral:");
 100
 101         for( i=0; ref[i].bv_val != NULL; i++ ) {
 102                 v2 = ch_realloc( v2, len + ref[i].bv_len + 1 );
 103                 v2[len-1] = '\n';
 104                 AC_MEMCPY(&v2[len], ref[i].bv_val, ref[i].bv_len );
 105                 len += ref[i].bv_len;
 106                 if (ref[i].bv_val[ref[i].bv_len-1] != '/') {
 107                         ++len;
 108                 }
 109         }
 110
 111         v2[len-1] = '\0';
 112         return v2;
 113 }
 114
 115 ber_tag_t
 116 slap_req2res( ber_tag_t tag )
 117 {
 118         switch( tag ) {
 119         case LDAP_REQ_ADD:
 120         case LDAP_REQ_BIND:
 121         case LDAP_REQ_COMPARE:
 122         case LDAP_REQ_EXTENDED:
 123         case LDAP_REQ_MODIFY:
 124         case LDAP_REQ_MODRDN:
 125                 tag++;
 126                 break;
 127
 128         case LDAP_REQ_DELETE:
 129                 tag = LDAP_RES_DELETE;
 130                 break;
 131
 132         case LDAP_REQ_ABANDON:
 133         case LDAP_REQ_UNBIND:
 134                 tag = LBER_SEQUENCE;
 135                 break;
 136
 137         case LDAP_REQ_SEARCH:
 138                 tag = LDAP_RES_SEARCH_RESULT;
 139                 break;
 140
 141         default:
 142                 tag = LBER_SEQUENCE;
 143         }
 144
 145         return tag;
 146 }
 147
 148 /*
 149  * SlapReply debugging enabled by USE_RS_ASSERT.
 150  *
 151  * Disabled by default, but compiled in (but still unused) when
 152  * LDAP_TEST.  #define USE_RS_ASSERT as nonzero to enable some
 153  * assertions which check the SlapReply.  USE_RS_ASSERT = 2 or higher
 154  * check aggressively, currently some code fail these tests.
 155  *
 156  * Environment variable $NO_RS_ASSERT controls how USE_RS_ASSERT handles
 157  * errors.  > 0: ignore errors, 0: abort (the default), < 0: just warn.
 158  *
 159  * Wrap LDAP operation calls in macros SLAP_OP() & co from proto-slap.h
 160  * to check the SlapReply.  contrib/slapd-tools/wrap_slap_ops converts
 161  * source code to use the macros.
 162  */
 163 #if defined(LDAP_TEST) || (defined(USE_RS_ASSERT) && (USE_RS_ASSERT))
 164
 165 int rs_suppress_assert = 0;
 166
 167 /* RS_ASSERT() helper function */
 168 void rs_assert_(const char*file, unsigned line, const char*fn, const char*cond)
 169 {
 170         int no_assert = rs_suppress_assert, save_errno = errno;
 171         const char *s;
 172
 173         if ( no_assert >= 0 ) {
 174                 if ( no_assert == 0 && (s = getenv( "NO_RS_ASSERT" )) && *s ) {
 175                         no_assert = rs_suppress_assert = atoi( s );
 176                 }
 177                 if ( no_assert > 0 ) {
 178                         errno = save_errno;
 179                         return;
 180                 }
 181         }
 182
 183 #ifdef rs_assert_       /* proto-slap.h #defined away the fn parameter */
 184         fprintf( stderr,"%s:%u: "  "RS_ASSERT(%s) failed.\n", file,line,cond );
 185 #else
 186         fprintf( stderr,"%s:%u: %s: RS_ASSERT(%s) failed.\n", file,line,fn,cond );
 187 #endif
 188         fflush( stderr );
 189
 190         errno = save_errno;
 191         /* $NO_RS_ASSERT > 0: ignore rs_asserts, 0: abort, < 0: just warn */
 192         if ( !no_assert /* from $NO_RS_ASSERT */ ) abort();
 193 }
 194
 195 /* SlapReply is consistent */
 196 void
 197 (rs_assert_ok)( const SlapReply *rs )
 198 {
 199         const slap_mask_t flags = rs->sr_flags;
 200
 201         if ( flags & REP_ENTRY_MASK ) {
 202                 RS_ASSERT( !(flags & REP_ENTRY_MUSTRELEASE)
 203                         || !(flags & (REP_ENTRY_MASK ^ REP_ENTRY_MUSTRELEASE)) );
 204                 RS_ASSERT( rs->sr_entry != NULL );
 205                 RS_ASSERT( (1 << rs->sr_type) &
 206                         ((1 << REP_SEARCH) | (1 << REP_SEARCHREF) |
 207                          (1 << REP_RESULT) | (1 << REP_GLUE_RESULT)) );
 208         }
 209 #if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */
 210         if ( (flags & (REP_MATCHED_MASK | REP_REF_MASK | REP_CTRLS_MASK)) ) {
 211                 RS_ASSERT( !(flags & REP_MATCHED_MASK) || rs->sr_matched );
 212                 RS_ASSERT( !(flags & REP_CTRLS_MASK  ) || rs->sr_ctrls   );
 213                 /* Note: LDAP_REFERRAL + !sr_ref is OK, becomes LDAP_NO_SUCH_OBJECT */
 214         }
 215 #if (USE_RS_ASSERT) > 2
 216         if ( rs->sr_err == LDAP_SUCCESS ) {
 217                 RS_ASSERT( rs->sr_text == NULL );
 218                 RS_ASSERT( rs->sr_matched == NULL );
 219         }
 220 #endif
 221 #endif
 222 }
 223
 224 /* Ready for calling a new backend operation */
 225 void
 226 (rs_assert_ready)( const SlapReply *rs )
 227 {
 228         RS_ASSERT( !rs->sr_entry   );
 229 #if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */
 230         RS_ASSERT( !rs->sr_text    );
 231         RS_ASSERT( !rs->sr_ref     );
 232         RS_ASSERT( !rs->sr_matched );
 233         RS_ASSERT( !rs->sr_ctrls   );
 234         RS_ASSERT( !rs->sr_flags   );
 235 #if (USE_RS_ASSERT) > 2
 236         RS_ASSERT( rs->sr_err == LDAP_SUCCESS );
 237 #endif
 238 #else
 239         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 240 #endif
 241 }
 242
 243 /* Backend operation done */
 244 void
 245 (rs_assert_done)( const SlapReply *rs )
 246 {
 247 #if defined(USE_RS_ASSERT) && (USE_RS_ASSERT) > 1 /* TODO: Enable when safe */
 248         RS_ASSERT( !(rs->sr_flags & ~(REP_ENTRY_MODIFIABLE|REP_NO_OPERATIONALS)) );
 249         rs_assert_ok( rs );
 250 #else
 251         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MUSTFLUSH) );
 252 #endif
 253 }
 254
 255 #endif /* LDAP_TEST || USE_RS_ASSERT */
 256
 257 /* Reset a used SlapReply whose contents has been flushed (freed/released) */
 258 void
 259 (rs_reinit)( SlapReply *rs, slap_reply_t type )
 260 {
 261         rs_reinit( rs, type );          /* proto-slap.h macro */
 262 }
 263
 264 /* Obey and clear rs->sr_flags & REP_ENTRY_MASK.  Clear sr_entry if freed. */
 265 void
 266 rs_flush_entry( Operation *op, SlapReply *rs, slap_overinst *on )
 267 {
 268         rs_assert_ok( rs );
 269
 270         if ( (rs->sr_flags & REP_ENTRY_MUSTFLUSH) && rs->sr_entry != NULL ) {
 271                 if ( !(rs->sr_flags & REP_ENTRY_MUSTRELEASE) ) {
 272                         entry_free( rs->sr_entry );
 273                 } else if ( on != NULL ) {
 274                         overlay_entry_release_ov( op, rs->sr_entry, 0, on );
 275                 } else {
 276                         be_entry_release_rw( op, rs->sr_entry, 0 );
 277                 }
 278                 rs->sr_entry = NULL;
 279         }
 280
 281         rs->sr_flags &= ~REP_ENTRY_MASK;
 282 }
 283
 284 /* Set rs->sr_entry after obeying and clearing sr_flags & REP_ENTRY_MASK. */
 285 void
 286 rs_replace_entry( Operation *op, SlapReply *rs, slap_overinst *on, Entry *e )
 287 {
 288         rs_flush_entry( op, rs, on );
 289         rs->sr_entry = e;
 290 }
 291
 292 /*
 293  * Ensure rs->sr_entry is modifiable, by duplicating it if necessary.
 294  * Obey sr_flags.  Set REP_ENTRY_<MODIFIABLE, and MUSTBEFREED if duplicated>.
 295  * Return nonzero if rs->sr_entry was replaced.
 296  */
 297 int
 298 rs_entry2modifiable( Operation *op, SlapReply *rs, slap_overinst *on )
 299 {
 300         if ( rs->sr_flags & REP_ENTRY_MODIFIABLE ) {
 301                 rs_assert_ok( rs );
 302                 return 0;
 303         }
 304         rs_replace_entry( op, rs, on, entry_dup( rs->sr_entry ));
 305         rs->sr_flags |= REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED;
 306         return 1;
 307 }
 308
 309 /* Check for any callbacks that want to be informed about being blocked
 310  * on output. These callbacks are expected to leave the callback list
 311  * unmodified. Their result is ignored.
 312  */
 313 static void
 314 slap_writewait_play(
 315         Operation *op )
 316 {
 317         slap_callback   *sc = op->o_callback;
 318
 319         for ( ; sc; sc = sc->sc_next ) {
 320                 if ( sc->sc_writewait )
 321                         sc->sc_writewait( op, sc );
 322         }
 323 }
 324
 325 static long send_ldap_ber(
 326         Operation *op,
 327         BerElement *ber )
 328 {
 329         Connection *conn = op->o_conn;
 330         ber_len_t bytes;
 331         long ret = 0;
 332         char *close_reason;
 333
 334         ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
 335
 336         /* write only one pdu at a time - wait til it's our turn */
 337         ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 338         if (( op->o_abandon && !op->o_cancel ) || !connection_valid( conn ) ||
 339                 conn->c_writers < 0 ) {
 340                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 341                 return 0;
 342         }
 343
 344         conn->c_writers++;
 345
 346         while ( conn->c_writers > 0 && conn->c_writing ) {
 347                 ldap_pvt_thread_pool_idle( &connection_pool );
 348                 ldap_pvt_thread_cond_wait( &conn->c_write1_cv, &conn->c_write1_mutex );
 349                 ldap_pvt_thread_pool_unidle( &connection_pool );
 350         }
 351
 352         /* connection was closed under us */
 353         if ( conn->c_writers < 0 ) {
 354                 /* we're the last waiter, let the closer continue */
 355                 if ( conn->c_writers == -1 )
 356                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 357                 conn->c_writers++;
 358                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 359                 return 0;
 360         }
 361
 362         /* Our turn */
 363         conn->c_writing = 1;
 364
 365         /* write the pdu */
 366         while( 1 ) {
 367                 int err;
 368
 369                 if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) {
 370                         ret = bytes;
 371                         break;
 372                 }
 373
 374                 err = sock_errno();
 375
 376                 /*
 377                  * we got an error.  if it's ewouldblock, we need to
 378                  * wait on the socket being writable.  otherwise, figure
 379                  * it's a hard error and return.
 380                  */
 381
 382                 Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n",
 383                     err, sock_errstr(err), 0 );
 384
 385                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 386                         close_reason = "connection lost on write";
 387 fail:
 388                         conn->c_writers--;
 389                         conn->c_writing = 0;
 390                         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 391                         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 392                         connection_closing( conn, close_reason );
 393                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 394                         return -1;
 395                 }
 396
 397                 /* wait for socket to be write-ready */
 398                 conn->c_writewaiter = 1;
 399                 ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 400                 ldap_pvt_thread_pool_idle( &connection_pool );
 401                 slap_writewait_play( op );
 402                 err = slapd_wait_writer( conn->c_sd );
 403                 conn->c_writewaiter = 0;
 404                 ldap_pvt_thread_pool_unidle( &connection_pool );
 405                 ldap_pvt_thread_mutex_lock( &conn->c_write1_mutex );
 406                 /* 0 is timeout, so we close it.
 407                  * -1 is an error, close it.
 408                  */
 409                 if ( err <= 0 ) {
 410                         if ( err == 0 )
 411                                 close_reason = "writetimeout";
 412                         else
 413                                 close_reason = "connection lost on writewait";
 414                         goto fail;
 415                 }
 416
 417                 if ( conn->c_writers < 0 ) {
 418                         ret = 0;
 419                         break;
 420                 }
 421         }
 422
 423         conn->c_writing = 0;
 424         if ( conn->c_writers < 0 ) {
 425                 conn->c_writers++;
 426                 if ( !conn->c_writers )
 427                         ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 428         } else {
 429                 conn->c_writers--;
 430                 ldap_pvt_thread_cond_signal( &conn->c_write1_cv );
 431         }
 432         ldap_pvt_thread_mutex_unlock( &conn->c_write1_mutex );
 433
 434         return ret;
 435 }
 436
 437 static int
 438 send_ldap_control( BerElement *ber, LDAPControl *c )
 439 {
 440         int rc;
 441
 442         assert( c != NULL );
 443
 444         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 445
 446         if( c->ldctl_iscritical ) {
 447                 rc = ber_printf( ber, "b",
 448                         (ber_int_t) c->ldctl_iscritical ) ;
 449                 if( rc == -1 ) return rc;
 450         }
 451
 452         if( c->ldctl_value.bv_val != NULL ) {
 453                 rc = ber_printf( ber, "O", &c->ldctl_value );
 454                 if( rc == -1 ) return rc;
 455         }
 456
 457         rc = ber_printf( ber, /*{*/"N}" );
 458         if( rc == -1 ) return rc;
 459
 460         return 0;
 461 }
 462
 463 static int
 464 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 465 {
 466         int rc;
 467
 468         if( c == NULL )
 469                 return 0;
 470
 471         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 472         if( rc == -1 ) return rc;
 473
 474         for( ; *c != NULL; c++) {
 475                 rc = send_ldap_control( ber, *c );
 476                 if( rc == -1 ) return rc;
 477         }
 478
 479 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 480         /* this is a hack to avoid having to modify op->s_ctrls */
 481         if( o->o_sortedresults ) {
 482                 BerElementBuffer berbuf;
 483                 BerElement *sber = (BerElement *) &berbuf;
 484                 LDAPControl sorted;
 485                 BER_BVZERO( &sorted.ldctl_value );
 486                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 487                 sorted.ldctl_iscritical = 0;
 488
 489                 ber_init2( sber, NULL, LBER_USE_DER );
 490
 491                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 492
 493                 if( ber_flatten2( sber, &sorted.ldctl_value, 0 ) == -1 ) {
 494                         return -1;
 495                 }
 496
 497                 (void) ber_free_buf( sber );
 498
 499                 rc = send_ldap_control( ber, &sorted );
 500                 if( rc == -1 ) return rc;
 501         }
 502 #endif
 503
 504         rc = ber_printf( ber, /*{*/"N}" );
 505
 506         return rc;
 507 }
 508
 509 /*
 510  * slap_response_play()
 511  *
 512  * plays the callback list; rationale: a callback can
 513  *   - remove itself from the list, by setting op->o_callback = NULL;
 514  *     malloc()'ed callbacks should free themselves from inside the
 515  *     sc_response() function.
 516  *   - replace itself with another (list of) callback(s), by setting
 517  *     op->o_callback = a new (list of) callback(s); in this case, it
 518  *     is the callback's responsibility to to append existing subsequent
 519  *     callbacks to the end of the list that is passed to the sc_response()
 520  *     function.
 521  *   - modify the list of subsequent callbacks by modifying the value
 522  *     of the sc_next field from inside the sc_response() function; this
 523  *     case does not require any handling from inside slap_response_play()
 524  *
 525  * To stop execution of the playlist, the sc_response() function must return
 526  * a value different from SLAP_SC_CONTINUE.
 527  *
 528  * The same applies to slap_cleanup_play(); only, there is no means to stop
 529  * execution of the playlist, since all cleanup functions must be called.
 530  */
 531 static int
 532 slap_response_play(
 533         Operation *op,
 534         SlapReply *rs )
 535 {
 536         int rc;
 537
 538         slap_callback   *sc = op->o_callback, **scp;
 539
 540         rc = SLAP_CB_CONTINUE;
 541         for ( scp = &sc; *scp; ) {
 542                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 543
 544                 op->o_callback = *scp;
 545                 if ( op->o_callback->sc_response ) {
 546                         rc = op->o_callback->sc_response( op, rs );
 547                         if ( op->o_callback == NULL ) {
 548                                 /* the callback has been removed;
 549                                  * repair the list */
 550                                 *scp = sc_next;
 551                                 sc_nextp = scp;
 552
 553                         } else if ( op->o_callback != *scp ) {
 554                                 /* a new callback has been inserted
 555                                  * in place of the existing one; repair the list */
 556                                 *scp = op->o_callback;
 557                                 sc_nextp = scp;
 558                         }
 559                         if ( rc != SLAP_CB_CONTINUE ) break;
 560                 }
 561                 scp = sc_nextp;
 562         }
 563
 564         op->o_callback = sc;
 565         return rc;
 566 }
 567
 568 static int
 569 slap_cleanup_play(
 570         Operation *op,
 571         SlapReply *rs )
 572 {
 573         slap_callback   *sc = op->o_callback, **scp;
 574
 575         for ( scp = &sc; *scp; ) {
 576                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 577
 578                 op->o_callback = *scp;
 579                 if ( op->o_callback->sc_cleanup ) {
 580                         (void)op->o_callback->sc_cleanup( op, rs );
 581                         if ( op->o_callback == NULL ) {
 582                                 /* the callback has been removed;
 583                                  * repair the list */
 584                                 *scp = sc_next;
 585                                 sc_nextp = scp;
 586
 587                         } else if ( op->o_callback != *scp ) {
 588                                 /* a new callback has been inserted
 589                                  * after the existing one; repair the list */
 590                                 /* a new callback has been inserted
 591                                  * in place of the existing one; repair the list */
 592                                 *scp = op->o_callback;
 593                                 sc_nextp = scp;
 594                         }
 595                         /* don't care about the result; do all cleanup */
 596                 }
 597                 scp = sc_nextp;
 598         }
 599
 600         op->o_callback = sc;
 601         return LDAP_SUCCESS;
 602 }
 603
 604 static int
 605 send_ldap_response(
 606         Operation *op,
 607         SlapReply *rs )
 608 {
 609         BerElementBuffer berbuf;
 610         BerElement      *ber = (BerElement *) &berbuf;
 611         int             rc = LDAP_SUCCESS;
 612         long    bytes;
 613
 614         /* op was actually aborted, bypass everything if client didn't Cancel */
 615         if (( rs->sr_err == SLAPD_ABANDON ) && !op->o_cancel ) {
 616                 rc = SLAPD_ABANDON;
 617                 goto clean2;
 618         }
 619
 620         if ( op->o_callback ) {
 621                 rc = slap_response_play( op, rs );
 622                 if ( rc != SLAP_CB_CONTINUE ) {
 623                         goto clean2;
 624                 }
 625         }
 626
 627         /* op completed, connection aborted, bypass sending response */
 628         if ( op->o_abandon && !op->o_cancel ) {
 629                 rc = SLAPD_ABANDON;
 630                 goto clean2;
 631         }
 632
 633 #ifdef LDAP_CONNECTIONLESS
 634         if (op->o_conn && op->o_conn->c_is_udp)
 635                 ber = op->o_res_ber;
 636         else
 637 #endif
 638         {
 639                 ber_init_w_nullc( ber, LBER_USE_DER );
 640                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 641         }
 642
 643         rc = rs->sr_err;
 644         if ( rc == SLAPD_ABANDON && op->o_cancel )
 645                 rc = LDAP_CANCELLED;
 646
 647         Debug( LDAP_DEBUG_TRACE,
 648                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 649                 rs->sr_msgid, rs->sr_tag, rc );
 650
 651         if( rs->sr_ref ) {
 652                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 653                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 654                         NULL, NULL );
 655         }
 656
 657 #ifdef LDAP_CONNECTIONLESS
 658         if (op->o_conn && op->o_conn->c_is_udp &&
 659                 op->o_protocol == LDAP_VERSION2 )
 660         {
 661                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 662                         rs->sr_tag, rc,
 663                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 664                 rs->sr_text == NULL ? "" : rs->sr_text );
 665         } else
 666 #endif
 667         if ( rs->sr_type == REP_INTERMEDIATE ) {
 668             rc = ber_printf( ber, "{it{" /*"}}"*/,
 669                         rs->sr_msgid, rs->sr_tag );
 670
 671         } else {
 672             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 673                 rs->sr_msgid, rs->sr_tag, rc,
 674                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 675                 rs->sr_text == NULL ? "" : rs->sr_text );
 676         }
 677
 678         if( rc != -1 ) {
 679                 if ( rs->sr_ref != NULL ) {
 680                         assert( rs->sr_err == LDAP_REFERRAL );
 681                         rc = ber_printf( ber, "t{W}",
 682                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 683                 } else {
 684                         assert( rs->sr_err != LDAP_REFERRAL );
 685                 }
 686         }
 687
 688         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 689                 rc = ber_printf( ber, "tO",
 690                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 691         }
 692
 693         if( rc != -1 &&
 694                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 695         {
 696                 if ( rs->sr_rspoid != NULL ) {
 697                         rc = ber_printf( ber, "ts",
 698                                 rs->sr_type == REP_EXTENDED
 699                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 700                                 rs->sr_rspoid );
 701                 }
 702                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 703                         rc = ber_printf( ber, "tO",
 704                                 rs->sr_type == REP_EXTENDED
 705                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 706                                 rs->sr_rspdata );
 707                 }
 708         }
 709
 710         if( rc != -1 ) {
 711                 rc = ber_printf( ber, /*"{"*/ "N}" );
 712         }
 713
 714         if( rc != -1 ) {
 715                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 716         }
 717
 718         if( rc != -1 ) {
 719                 rc = ber_printf( ber, /*"{"*/ "N}" );
 720         }
 721
 722 #ifdef LDAP_CONNECTIONLESS
 723         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 724                 && rc != -1 )
 725         {
 726                 rc = ber_printf( ber, /*"{"*/ "N}" );
 727         }
 728 #endif
 729
 730         if ( rc == -1 ) {
 731                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 732
 733 #ifdef LDAP_CONNECTIONLESS
 734                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 735 #endif
 736                 {
 737                         ber_free_buf( ber );
 738                 }
 739                 goto cleanup;
 740         }
 741
 742         /* send BER */
 743         bytes = send_ldap_ber( op, ber );
 744 #ifdef LDAP_CONNECTIONLESS
 745         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 746 #endif
 747         {
 748                 ber_free_buf( ber );
 749         }
 750
 751         if ( bytes < 0 ) {
 752                 Debug( LDAP_DEBUG_ANY,
 753                         "send_ldap_response: ber write failed\n",
 754                         0, 0, 0 );
 755
 756                 goto cleanup;
 757         }
 758
 759         ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
 760         ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
 761         ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
 762         ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
 763
 764 cleanup:;
 765         /* Tell caller that we did this for real, as opposed to being
 766          * overridden by a callback
 767          */
 768         rc = SLAP_CB_CONTINUE;
 769
 770 clean2:;
 771         if ( op->o_callback ) {
 772                 (void)slap_cleanup_play( op, rs );
 773         }
 774
 775         if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 776                 rs->sr_flags ^= REP_MATCHED_MUSTBEFREED; /* paranoia */
 777                 if ( rs->sr_matched ) {
 778                         free( (char *)rs->sr_matched );
 779                         rs->sr_matched = NULL;
 780                 }
 781         }
 782
 783         if ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 784                 rs->sr_flags ^= REP_REF_MUSTBEFREED; /* paranoia */
 785                 if ( rs->sr_ref ) {
 786                         ber_bvarray_free( rs->sr_ref );
 787                         rs->sr_ref = NULL;
 788                 }
 789         }
 790
 791         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
 792                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
 793                 if ( rs->sr_ctrls ) {
 794                         slap_free_ctrls( op, rs->sr_ctrls );
 795                         rs->sr_ctrls = NULL;
 796                 }
 797         }
 798
 799         return rc;
 800 }
 801
 802
 803 void
 804 send_ldap_disconnect( Operation *op, SlapReply *rs )
 805 {
 806 #define LDAP_UNSOLICITED_ERROR(e) \
 807         (  (e) == LDAP_PROTOCOL_ERROR \
 808         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 809         || (e) == LDAP_UNAVAILABLE )
 810
 811         Debug( LDAP_DEBUG_TRACE,
 812                 "send_ldap_disconnect %d:%s\n",
 813                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 814         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 815
 816         /* TODO: Flush the entry if sr_type == REP_SEARCH/REP_SEARCHREF? */
 817         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 818         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
 819
 820         rs->sr_type = REP_EXTENDED;
 821         rs->sr_rspdata = NULL;
 822
 823         if ( op->o_protocol < LDAP_VERSION3 ) {
 824                 rs->sr_rspoid = NULL;
 825                 rs->sr_tag = slap_req2res( op->o_tag );
 826                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 827
 828         } else {
 829                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 830                 rs->sr_tag = LDAP_RES_EXTENDED;
 831                 rs->sr_msgid = LDAP_RES_UNSOLICITED;
 832         }
 833
 834         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 835 #ifdef HAVE_GETTIMEOFDAY
 836                 struct timeval now;
 837                 struct timeval duration;
 838                 time_t msec;
 839
 840                 (void) gettimeofday( &now, NULL );
 841                 timersub( &now, &op->o_hr_time, &duration );
 842                 msec = duration.tv_usec / 1000 + duration.tv_sec * 1000;
 843
 844                 Statslog6( LDAP_DEBUG_STATS,
 845                         "%s DISCONNECT tag=%lu err=%d duration=%d.%03dms text=%s\n",
 846                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 847                         msec,
 848                         duration.tv_usec % 1000,
 849                         rs->sr_text ? rs->sr_text : "" );
 850 #else
 851                 Statslog( LDAP_DEBUG_STATS,
 852                         "%s DISCONNECT 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 #endif
 856         }
 857 }
 858
 859 void
 860 slap_send_ldap_result( Operation *op, SlapReply *rs )
 861 {
 862         char *tmp = NULL;
 863         const char *otext = rs->sr_text;
 864         BerVarray oref = rs->sr_ref;
 865
 866         rs->sr_type = REP_RESULT;
 867
 868         /* Propagate Abandons so that cleanup callbacks can be processed */
 869         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
 870                 goto abandon;
 871
 872         Debug( LDAP_DEBUG_TRACE,
 873                 "send_ldap_result: %s p=%d\n",
 874                 op->o_log_prefix, op->o_protocol, 0 );
 875         Debug( LDAP_DEBUG_ARGS,
 876                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 877                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 878                 rs->sr_text ? rs->sr_text : "" );
 879         if( rs->sr_ref ) {
 880                 Debug( LDAP_DEBUG_ARGS,
 881                         "send_ldap_result: referral=\"%s\"\n",
 882                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 883                         NULL, NULL );
 884         }
 885         assert( !LDAP_API_ERROR( rs->sr_err ) );
 886         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 887
 888         if ( rs->sr_err == LDAP_REFERRAL ) {
 889                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 890
 891                 if( rs->sr_ref == NULL ) {
 892                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 893                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 894                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 895                 }
 896         }
 897
 898         if ( op->o_protocol < LDAP_VERSION3 ) {
 899                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 900                 rs->sr_text = tmp;
 901                 rs->sr_ref = NULL;
 902         }
 903
 904 abandon:
 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 ( rs->sr_flags & REP_REF_MUSTBEFREED ) {
 909                 if ( rs->sr_ref == NULL ) {
 910                         rs->sr_flags ^= REP_REF_MUSTBEFREED;
 911                         ber_bvarray_free( oref );
 912                 }
 913                 oref = NULL; /* send_ldap_response() will free rs->sr_ref if != NULL */
 914         }
 915
 916         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 917
 918 #ifdef HAVE_GETTIMEOFDAY
 919                 struct timeval now;
 920                 struct timeval duration;
 921                 time_t msec;
 922
 923                 (void) gettimeofday( &now, NULL );
 924                 timersub( &now, &op->o_hr_time, &duration );
 925                 msec = duration.tv_usec / 1000 + duration.tv_sec * 1000;
 926
 927                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 928                         Statslog7( LDAP_DEBUG_STATS,
 929                                 "%s SEARCH RESULT tag=%lu err=%d duration=%d.%03dms nentries=%d text=%s\n",
 930                                 op->o_log_prefix,
 931                                 rs->sr_tag,
 932                                 rs->sr_err,
 933                                 msec,
 934                                 duration.tv_usec % 1000,
 935                                 rs->sr_nentries,
 936                                 rs->sr_text ? rs->sr_text : "");
 937                 } else {
 938                         Statslog6( LDAP_DEBUG_STATS,
 939                                 "%s RESULT tag=%lu err=%d duration=%d.%03dms text=%s\n",
 940                                 op->o_log_prefix,
 941                                 rs->sr_tag,
 942                                 rs->sr_err,
 943                                 msec,
 944                                 duration.tv_usec % 1000,
 945                                 rs->sr_text ? rs->sr_text : "");
 946                 }
 947 #else
 948                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 949                         Statslog( LDAP_DEBUG_STATS,
 950                                 "%s SEARCH RESULT tag=%lu err=%d nentries=%d text=%s\n",
 951                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 952                                 rs->sr_nentries, rs->sr_text ? rs->sr_text : "" );
 953                 } else {
 954                         Statslog( LDAP_DEBUG_STATS,
 955                                 "%s RESULT tag=%lu err=%d text=%s\n",
 956                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 957                                 rs->sr_text ? rs->sr_text : "", 0 );
 958                 }
 959 #endif
 960         }
 961
 962         if( tmp != NULL ) ch_free(tmp);
 963         rs->sr_text = otext;
 964         rs->sr_ref = oref;
 965 }
 966
 967 void
 968 send_ldap_sasl( Operation *op, SlapReply *rs )
 969 {
 970         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 971                 rs->sr_err,
 972                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 973
 974         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
 975         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
 976
 977         rs->sr_type = REP_SASL;
 978         rs->sr_tag = slap_req2res( op->o_tag );
 979         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 980
 981         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 982 #ifdef HAVE_GETTIMEOFDAY
 983                 struct timeval now;
 984                 struct timeval duration;
 985                 time_t msec;
 986
 987                 (void) gettimeofday( &now, NULL );
 988                 timersub( &now, &op->o_hr_time, &duration );
 989                 msec = duration.tv_usec / 1000 + duration.tv_sec * 1000;
 990
 991                 Statslog6( LDAP_DEBUG_STATS,
 992                         "%s RESULT tag=%lu err=%d duration=%d.%03dms text=%s\n",
 993                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 994                         msec,
 995                         duration.tv_usec % 1000,
 996                         rs->sr_text ? rs->sr_text : "" );
 997 #else
 998                 Statslog( LDAP_DEBUG_STATS,
 999                         "%s RESULT tag=%lu err=%d text=%s\n",
1000                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
1001                         rs->sr_text ? rs->sr_text : "", 0 );
1002 #endif
1003         }
1004 }
1005
1006 void
1007 slap_send_ldap_extended( Operation *op, SlapReply *rs )
1008 {
1009         Debug( LDAP_DEBUG_TRACE,
1010                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
1011                 rs->sr_err,
1012                 rs->sr_rspoid ? rs->sr_rspoid : "",
1013                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
1014
1015         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
1016         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
1017
1018         rs->sr_type = REP_EXTENDED;
1019         rs->sr_tag = slap_req2res( op->o_tag );
1020         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
1021
1022         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
1023 #ifdef HAVE_GETTIMEOFDAY
1024                 struct timeval now;
1025                 struct timeval duration;
1026                 time_t msec;
1027
1028                 (void) gettimeofday( &now, NULL );
1029                 timersub( &now, &op->o_hr_time, &duration );
1030                 msec = duration.tv_usec / 1000 + duration.tv_sec * 1000;
1031
1032                 Statslog6( LDAP_DEBUG_STATS,
1033                         "%s RESULT oid=%s err=%d duration=%d.%03dms text=%s\n",
1034                         op->o_log_prefix,
1035                         rs->sr_rspoid ? rs->sr_rspoid : "",
1036                         rs->sr_err,
1037                         msec,
1038                         duration.tv_usec % 1000,
1039                         rs->sr_text ? rs->sr_text : "" );
1040 #else
1041                 Statslog( LDAP_DEBUG_STATS,
1042                         "%s RESULT oid=%s err=%d text=%s\n",
1043                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
1044                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
1045 #endif
1046         }
1047 }
1048
1049 void
1050 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
1051 {
1052         Debug( LDAP_DEBUG_TRACE,
1053                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
1054                 rs->sr_err,
1055                 rs->sr_rspoid ? rs->sr_rspoid : "",
1056                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
1057
1058         RS_ASSERT( !(rs->sr_flags & REP_ENTRY_MASK) );
1059         rs->sr_flags &= ~REP_ENTRY_MASK;        /* paranoia */
1060
1061         rs->sr_type = REP_INTERMEDIATE;
1062         rs->sr_tag = LDAP_RES_INTERMEDIATE;
1063         rs->sr_msgid = op->o_msgid;
1064         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
1065                 Statslog( LDAP_DEBUG_STATS2,
1066                         "%s INTERM oid=%s\n",
1067                         op->o_log_prefix,
1068                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
1069         }
1070 }
1071
1072 #define set_ldap_error( rs, err, text ) do { \
1073                 (rs)->sr_err = err; (rs)->sr_text = text; } while(0)
1074
1075 /*
1076  * returns:
1077  *
1078  * LDAP_SUCCESS                 entry sent
1079  * LDAP_OTHER                   entry not sent (other)
1080  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
1081  * LDAP_UNAVAILABLE             entry not sent (connection closed)
1082  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
1083  */
1084
1085 int
1086 slap_send_search_entry( Operation *op, SlapReply *rs )
1087 {
1088         BerElementBuffer berbuf;
1089         BerElement      *ber = (BerElement *) &berbuf;
1090         Attribute       *a;
1091         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
1092         int             userattrs;
1093         AccessControlState acl_state = ACL_STATE_INIT;
1094         int                      attrsonly;
1095         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1096
1097         /* a_flags: array of flags telling if the i-th element will be
1098          *          returned or filtered out
1099          * e_flags: array of a_flags
1100          */
1101         char **e_flags = NULL;
1102
1103         rs->sr_type = REP_SEARCH;
1104
1105         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
1106                 rc = LDAP_SIZELIMIT_EXCEEDED;
1107                 goto error_return;
1108         }
1109
1110         /* Every 64 entries, check for thread pool pause */
1111         if ( ( ( rs->sr_nentries & 0x3f ) == 0x3f ) &&
1112                 ldap_pvt_thread_pool_pausing( &connection_pool ) > 0 )
1113         {
1114                 rc = LDAP_BUSY;
1115                 goto error_return;
1116         }
1117
1118         /* eventually will loop through generated operational attribute types
1119          * currently implemented types include:
1120          *      entryDN, subschemaSubentry, and hasSubordinates */
1121         /* NOTE: moved before overlays callback circling because
1122          * they may modify entry and other stuff in rs */
1123         /* check for special all operational attributes ("+") type */
1124         /* FIXME: maybe we could set this flag at the operation level;
1125          * however, in principle the caller of send_search_entry() may
1126          * change the attribute list at each call */
1127         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
1128
1129         rc = backend_operational( op, rs );
1130         if ( rc ) {
1131                 goto error_return;
1132         }
1133
1134         if ( op->o_callback ) {
1135                 rc = slap_response_play( op, rs );
1136                 if ( rc != SLAP_CB_CONTINUE ) {
1137                         goto error_return;
1138                 }
1139         }
1140
1141         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
1142                 op->o_connid, rs->sr_entry->e_name.bv_val,
1143                 op->ors_attrsonly ? " (attrsOnly)" : "" );
1144
1145         attrsonly = op->ors_attrsonly;
1146
1147         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
1148                 Debug( LDAP_DEBUG_ACL,
1149                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
1150                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
1151
1152                 rc = LDAP_INSUFFICIENT_ACCESS;
1153                 goto error_return;
1154         }
1155
1156         if ( op->o_res_ber ) {
1157                 /* read back control or LDAP_CONNECTIONLESS */
1158             ber = op->o_res_ber;
1159         } else {
1160                 struct berval   bv;
1161
1162                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1163                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1164
1165                 ber_init2( ber, &bv, LBER_USE_DER );
1166                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1167         }
1168
1169 #ifdef LDAP_CONNECTIONLESS
1170         if ( op->o_conn && op->o_conn->c_is_udp ) {
1171                 /* CONNECTIONLESS */
1172                 if ( op->o_protocol == LDAP_VERSION2 ) {
1173                 rc = ber_printf(ber, "t{O{" /*}}*/,
1174                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
1175                 } else {
1176                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
1177                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
1178                 }
1179         } else
1180 #endif
1181         if ( op->o_res_ber ) {
1182                 /* read back control */
1183             rc = ber_printf( ber, "t{O{" /*}}*/,
1184                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
1185         } else {
1186             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
1187                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
1188         }
1189
1190         if ( rc == -1 ) {
1191                 Debug( LDAP_DEBUG_ANY,
1192                         "send_search_entry: conn %lu  ber_printf failed\n",
1193                         op->o_connid, 0, 0 );
1194
1195                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1196                 set_ldap_error( rs, LDAP_OTHER, "encoding DN error" );
1197                 rc = rs->sr_err;
1198                 goto error_return;
1199         }
1200
1201         /* check for special all user attributes ("*") type */
1202         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
1203
1204         /* create an array of arrays of flags. Each flag corresponds
1205          * to particular value of attribute and equals 1 if value matches
1206          * to ValuesReturnFilter or 0 if not
1207          */
1208         if ( op->o_vrFilter != NULL ) {
1209                 int     k = 0;
1210                 size_t  size;
1211
1212                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1213                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1214                 }
1215
1216                 size = i * sizeof(char *) + k;
1217                 if ( size > 0 ) {
1218                         char    *a_flags;
1219                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
1220                         if( e_flags == NULL ) {
1221                         Debug( LDAP_DEBUG_ANY,
1222                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
1223                                         op->o_connid, 0, 0 );
1224                                 ber_free( ber, 1 );
1225
1226                                 set_ldap_error( rs, LDAP_OTHER, "out of memory" );
1227                                 goto error_return;
1228                         }
1229                         a_flags = (char *)(e_flags + i);
1230                         memset( a_flags, 0, k );
1231                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
1232                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1233                                 e_flags[i] = a_flags;
1234                                 a_flags += j;
1235                         }
1236
1237                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
1238                         if ( rc == -1 ) {
1239                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
1240                                         "conn %lu matched values filtering failed\n",
1241                                         op->o_connid, 0, 0 );
1242                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1243                                 set_ldap_error( rs, LDAP_OTHER,
1244                                         "matched values filtering error" );
1245                                 rc = rs->sr_err;
1246                                 goto error_return;
1247                         }
1248                 }
1249         }
1250
1251         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
1252                 AttributeDescription *desc = a->a_desc;
1253                 int finish = 0;
1254
1255                 if ( rs->sr_attrs == NULL ) {
1256                         /* all user attrs request, skip operational attributes */
1257                         if( is_at_operational( desc->ad_type ) ) {
1258                                 continue;
1259                         }
1260
1261                 } else {
1262                         /* specific attrs requested */
1263                         if ( is_at_operational( desc->ad_type ) ) {
1264                                 /* if not explicitly requested */
1265                                 if ( !ad_inlist( desc, rs->sr_attrs )) {
1266                                         /* if not all op attrs requested, skip */
1267                                         if ( !SLAP_OPATTRS( rs->sr_attr_flags ))
1268                                                 continue;
1269                                         /* if DSA-specific and replicating, skip */
1270                                         if ( op->o_sync != SLAP_CONTROL_NONE &&
1271                                                 desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
1272                                                 continue;
1273                                 }
1274                         } else {
1275                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1276                                         continue;
1277                                 }
1278                         }
1279                 }
1280
1281                 if ( attrsonly ) {
1282                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1283                                 ACL_READ, &acl_state ) )
1284                         {
1285                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
1286                                         "conn %lu access to attribute %s not allowed\n",
1287                                         op->o_connid, desc->ad_cname.bv_val, 0 );
1288                                 continue;
1289                         }
1290
1291                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
1292                                 Debug( LDAP_DEBUG_ANY,
1293                                         "send_search_entry: conn %lu  ber_printf failed\n",
1294                                         op->o_connid, 0, 0 );
1295
1296                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1297                                 set_ldap_error( rs, LDAP_OTHER,
1298                                         "encoding description error");
1299                                 rc = rs->sr_err;
1300                                 goto error_return;
1301                         }
1302                         finish = 1;
1303
1304                 } else {
1305                         int first = 1;
1306                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
1307                                 if ( ! access_allowed( op, rs->sr_entry,
1308                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
1309                                 {
1310                                         Debug( LDAP_DEBUG_ACL,
1311                                                 "send_search_entry: conn %lu "
1312                                                 "access to attribute %s, value #%d not allowed\n",
1313                                                 op->o_connid, desc->ad_cname.bv_val, i );
1314
1315                                         continue;
1316                                 }
1317
1318                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1319                                         continue;
1320                                 }
1321
1322                                 if ( first ) {
1323                                         first = 0;
1324                                         finish = 1;
1325                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
1326                                                 Debug( LDAP_DEBUG_ANY,
1327                                                         "send_search_entry: conn %lu  ber_printf failed\n",
1328                                                         op->o_connid, 0, 0 );
1329
1330                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1331                                                 set_ldap_error( rs, LDAP_OTHER,
1332                                                         "encoding description error");
1333                                                 rc = rs->sr_err;
1334                                                 goto error_return;
1335                                         }
1336                                 }
1337                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1338                                         Debug( LDAP_DEBUG_ANY,
1339                                                 "send_search_entry: conn %lu  "
1340                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
1341
1342                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1343                                         set_ldap_error( rs, LDAP_OTHER,
1344                                                 "encoding values error" );
1345                                         rc = rs->sr_err;
1346                                         goto error_return;
1347                                 }
1348                         }
1349                 }
1350
1351                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1352                         Debug( LDAP_DEBUG_ANY,
1353                                 "send_search_entry: conn %lu ber_printf failed\n",
1354                                 op->o_connid, 0, 0 );
1355
1356                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1357                         set_ldap_error( rs, LDAP_OTHER, "encode end error" );
1358                         rc = rs->sr_err;
1359                         goto error_return;
1360                 }
1361         }
1362
1363         /* NOTE: moved before overlays callback circling because
1364          * they may modify entry and other stuff in rs */
1365         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
1366                 int     k = 0;
1367                 size_t  size;
1368
1369                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1370                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1371                 }
1372
1373                 size = i * sizeof(char *) + k;
1374                 if ( size > 0 ) {
1375                         char    *a_flags, **tmp;
1376
1377                         /*
1378                          * Reuse previous memory - we likely need less space
1379                          * for operational attributes
1380                          */
1381                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
1382                                 op->o_tmpmemctx );
1383                         if ( tmp == NULL ) {
1384                                 Debug( LDAP_DEBUG_ANY,
1385                                         "send_search_entry: conn %lu "
1386                                         "not enough memory "
1387                                         "for matched values filtering\n",
1388                                         op->o_connid, 0, 0 );
1389                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1390                                 set_ldap_error( rs, LDAP_OTHER,
1391                                         "not enough memory for matched values filtering" );
1392                                 goto error_return;
1393                         }
1394                         e_flags = tmp;
1395                         a_flags = (char *)(e_flags + i);
1396                         memset( a_flags, 0, k );
1397                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1398                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1399                                 e_flags[i] = a_flags;
1400                                 a_flags += j;
1401                         }
1402                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
1403
1404                         if ( rc == -1 ) {
1405                                 Debug( LDAP_DEBUG_ANY,
1406                                         "send_search_entry: conn %lu "
1407                                         "matched values filtering failed\n",
1408                                         op->o_connid, 0, 0);
1409                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1410                                 set_ldap_error( rs, LDAP_OTHER,
1411                                         "matched values filtering error" );
1412                                 rc = rs->sr_err;
1413                                 goto error_return;
1414                         }
1415                 }
1416         }
1417
1418         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1419                 AttributeDescription *desc = a->a_desc;
1420
1421                 if ( rs->sr_attrs == NULL ) {
1422                         /* all user attrs request, skip operational attributes */
1423                         if( is_at_operational( desc->ad_type ) ) {
1424                                 continue;
1425                         }
1426
1427                 } else {
1428                         /* specific attrs requested */
1429                         if( is_at_operational( desc->ad_type ) ) {
1430                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1431                                         !ad_inlist( desc, rs->sr_attrs ) )
1432                                 {
1433                                         continue;
1434                                 }
1435                                 /* if DSA-specific and replicating, skip */
1436                                 if ( op->o_sync != SLAP_CONTROL_NONE &&
1437                                         desc->ad_type->sat_usage == LDAP_SCHEMA_DSA_OPERATION )
1438                                         continue;
1439                         } else {
1440                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1441                                         continue;
1442                                 }
1443                         }
1444                 }
1445
1446                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1447                         ACL_READ, &acl_state ) )
1448                 {
1449                         Debug( LDAP_DEBUG_ACL,
1450                                 "send_search_entry: conn %lu "
1451                                 "access to attribute %s not allowed\n",
1452                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1453
1454                         continue;
1455                 }
1456
1457                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1458                 if ( rc == -1 ) {
1459                         Debug( LDAP_DEBUG_ANY,
1460                                 "send_search_entry: conn %lu  "
1461                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1462
1463                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1464                         set_ldap_error( rs, LDAP_OTHER,
1465                                 "encoding description error" );
1466                         rc = rs->sr_err;
1467                         goto error_return;
1468                 }
1469
1470                 if ( ! attrsonly ) {
1471                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1472                                 if ( ! access_allowed( op, rs->sr_entry,
1473                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1474                                 {
1475                                         Debug( LDAP_DEBUG_ACL,
1476                                                 "send_search_entry: conn %lu "
1477                                                 "access to %s, value %d not allowed\n",
1478                                                 op->o_connid, desc->ad_cname.bv_val, i );
1479
1480                                         continue;
1481                                 }
1482
1483                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1484                                         continue;
1485                                 }
1486
1487                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1488                                         Debug( LDAP_DEBUG_ANY,
1489                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1490                                                 op->o_connid, 0, 0 );
1491
1492                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1493                                         set_ldap_error( rs, LDAP_OTHER,
1494                                                 "encoding values error" );
1495                                         rc = rs->sr_err;
1496                                         goto error_return;
1497                                 }
1498                         }
1499                 }
1500
1501                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1502                         Debug( LDAP_DEBUG_ANY,
1503                                 "send_search_entry: conn %lu  ber_printf failed\n",
1504                                 op->o_connid, 0, 0 );
1505
1506                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1507                         set_ldap_error( rs, LDAP_OTHER, "encode end error" );
1508                         rc = rs->sr_err;
1509                         goto error_return;
1510                 }
1511         }
1512
1513         /* free e_flags */
1514         if ( e_flags ) {
1515                 slap_sl_free( e_flags, op->o_tmpmemctx );
1516                 e_flags = NULL;
1517         }
1518
1519         rc = ber_printf( ber, /*{{*/ "}N}" );
1520
1521         if( rc != -1 ) {
1522                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1523         }
1524
1525         if( rc != -1 ) {
1526 #ifdef LDAP_CONNECTIONLESS
1527                 if( op->o_conn && op->o_conn->c_is_udp ) {
1528                         if ( op->o_protocol != LDAP_VERSION2 ) {
1529                                 rc = ber_printf( ber, /*{*/ "N}" );
1530                         }
1531                 } else
1532 #endif
1533                 if ( op->o_res_ber == NULL ) {
1534                         rc = ber_printf( ber, /*{*/ "N}" );
1535                 }
1536         }
1537
1538         if ( rc == -1 ) {
1539                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1540
1541                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1542                 set_ldap_error( rs, LDAP_OTHER, "encode entry end error" );
1543                 rc = rs->sr_err;
1544                 goto error_return;
1545         }
1546
1547         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1548             op->o_log_prefix, rs->sr_entry->e_nname.bv_val, 0, 0, 0 );
1549
1550         rs_flush_entry( op, rs, NULL );
1551
1552         if ( op->o_res_ber == NULL ) {
1553                 bytes = send_ldap_ber( op, ber );
1554                 ber_free_buf( ber );
1555
1556                 if ( bytes < 0 ) {
1557                         Debug( LDAP_DEBUG_ANY,
1558                                 "send_search_entry: conn %lu  ber write failed.\n",
1559                                 op->o_connid, 0, 0 );
1560
1561                         rc = LDAP_UNAVAILABLE;
1562                         goto error_return;
1563                 }
1564                 rs->sr_nentries++;
1565
1566                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1567                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1568                 ldap_pvt_mp_add_ulong( op->o_counters->sc_entries, 1 );
1569                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1570                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1571         }
1572
1573         Debug( LDAP_DEBUG_TRACE,
1574                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1575
1576         rc = LDAP_SUCCESS;
1577
1578 error_return:;
1579         if ( op->o_callback ) {
1580                 (void)slap_cleanup_play( op, rs );
1581         }
1582
1583         if ( e_flags ) {
1584                 slap_sl_free( e_flags, op->o_tmpmemctx );
1585         }
1586
1587         /* FIXME: Can break if rs now contains an extended response */
1588         if ( rs->sr_operational_attrs ) {
1589                 attrs_free( rs->sr_operational_attrs );
1590                 rs->sr_operational_attrs = NULL;
1591         }
1592         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1593
1594         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) {
1595                 rs_flush_entry( op, rs, NULL );
1596         } else {
1597                 RS_ASSERT( (rs->sr_flags & REP_ENTRY_MASK) == 0 );
1598         }
1599
1600         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
1601                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
1602                 if ( rs->sr_ctrls ) {
1603                         slap_free_ctrls( op, rs->sr_ctrls );
1604                         rs->sr_ctrls = NULL;
1605                 }
1606         }
1607
1608         return( rc );
1609 }
1610
1611 int
1612 slap_send_search_reference( Operation *op, SlapReply *rs )
1613 {
1614         BerElementBuffer berbuf;
1615         BerElement      *ber = (BerElement *) &berbuf;
1616         int rc = 0;
1617         int bytes;
1618         char *edn = rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)";
1619
1620         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1621         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1622
1623         rs->sr_type = REP_SEARCHREF;
1624         if ( op->o_callback ) {
1625                 rc = slap_response_play( op, rs );
1626                 if ( rc != SLAP_CB_CONTINUE ) {
1627                         goto rel;
1628                 }
1629         }
1630
1631         Debug( LDAP_DEBUG_TRACE,
1632                 "=> send_search_reference: dn=\"%s\"\n",
1633                 edn, 0, 0 );
1634
1635         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1636                 ad_entry, NULL, ACL_READ, NULL ) )
1637         {
1638                 Debug( LDAP_DEBUG_ACL,
1639                         "send_search_reference: access to entry not allowed\n",
1640                     0, 0, 0 );
1641                 rc = 1;
1642                 goto rel;
1643         }
1644
1645         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1646                 ad_ref, NULL, ACL_READ, NULL ) )
1647         {
1648                 Debug( LDAP_DEBUG_ACL,
1649                         "send_search_reference: access "
1650                         "to reference not allowed\n",
1651                     0, 0, 0 );
1652                 rc = 1;
1653                 goto rel;
1654         }
1655
1656         if( op->o_domain_scope ) {
1657                 Debug( LDAP_DEBUG_ANY,
1658                         "send_search_reference: domainScope control in (%s)\n",
1659                         edn, 0, 0 );
1660                 rc = 0;
1661                 goto rel;
1662         }
1663
1664         if( rs->sr_ref == NULL ) {
1665                 Debug( LDAP_DEBUG_ANY,
1666                         "send_search_reference: null ref in (%s)\n",
1667                         edn, 0, 0 );
1668                 rc = 1;
1669                 goto rel;
1670         }
1671
1672         if( op->o_protocol < LDAP_VERSION3 ) {
1673                 rc = 0;
1674                 /* save the references for the result */
1675                 if( rs->sr_ref[0].bv_val != NULL ) {
1676                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1677                                 rc = LDAP_OTHER;
1678                 }
1679                 goto rel;
1680         }
1681
1682 #ifdef LDAP_CONNECTIONLESS
1683         if( op->o_conn && op->o_conn->c_is_udp ) {
1684                 ber = op->o_res_ber;
1685         } else
1686 #endif
1687         {
1688                 ber_init_w_nullc( ber, LBER_USE_DER );
1689                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1690         }
1691
1692         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1693                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1694
1695         if( rc != -1 ) {
1696                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1697         }
1698
1699         if( rc != -1 ) {
1700                 rc = ber_printf( ber, /*"{"*/ "N}" );
1701         }
1702
1703         if ( rc == -1 ) {
1704                 Debug( LDAP_DEBUG_ANY,
1705                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1706
1707 #ifdef LDAP_CONNECTIONLESS
1708                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1709 #endif
1710                 ber_free_buf( ber );
1711                 set_ldap_error( rs, LDAP_OTHER, "encode DN error" );
1712                 goto rel;
1713         }
1714
1715         rc = 0;
1716         rs_flush_entry( op, rs, NULL );
1717
1718 #ifdef LDAP_CONNECTIONLESS
1719         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1720 #endif
1721         bytes = send_ldap_ber( op, ber );
1722         ber_free_buf( ber );
1723
1724         if ( bytes < 0 ) {
1725                 rc = LDAP_UNAVAILABLE;
1726         } else {
1727                 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1728                 ldap_pvt_mp_add_ulong( op->o_counters->sc_bytes, (unsigned long)bytes );
1729                 ldap_pvt_mp_add_ulong( op->o_counters->sc_refs, 1 );
1730                 ldap_pvt_mp_add_ulong( op->o_counters->sc_pdu, 1 );
1731                 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1732         }
1733 #ifdef LDAP_CONNECTIONLESS
1734         }
1735 #endif
1736         if ( rs->sr_ref != NULL ) {
1737                 int     r;
1738
1739                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1740                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1741                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1742                                 0, 0 );
1743                 }
1744
1745         } else {
1746                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1747                         op->o_log_prefix, 0, 0, 0, 0 );
1748         }
1749
1750         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1751
1752         if ( 0 ) {
1753 rel:
1754             rs_flush_entry( op, rs, NULL );
1755         }
1756
1757         if ( op->o_callback ) {
1758                 (void)slap_cleanup_play( op, rs );
1759         }
1760
1761         if ( rs->sr_flags & REP_CTRLS_MUSTBEFREED ) {
1762                 rs->sr_flags ^= REP_CTRLS_MUSTBEFREED; /* paranoia */
1763                 if ( rs->sr_ctrls ) {
1764                         slap_free_ctrls( op, rs->sr_ctrls );
1765                         rs->sr_ctrls = NULL;
1766                 }
1767         }
1768
1769         return rc;
1770 }
1771
1772 int
1773 str2result(
1774     char        *s,
1775     int         *code,
1776     char        **matched,
1777     char        **info )
1778 {
1779         int     rc;
1780         char    *c;
1781
1782         *code = LDAP_SUCCESS;
1783         *matched = NULL;
1784         *info = NULL;
1785
1786         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1787                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1788                     s, 0, 0 );
1789
1790                 return( -1 );
1791         }
1792
1793         rc = 0;
1794         while ( (s = strchr( s, '\n' )) != NULL ) {
1795                 *s++ = '\0';
1796                 if ( *s == '\0' ) {
1797                         break;
1798                 }
1799                 if ( (c = strchr( s, ':' )) != NULL ) {
1800                         c++;
1801                 }
1802
1803                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1804                         char    *next = NULL;
1805                         long    retcode;
1806
1807                         if ( c == NULL ) {
1808                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
1809                                     s, 0, 0 );
1810                                 rc = -1;
1811                                 continue;
1812                         }
1813
1814                         while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
1815                         if ( c[ 0 ] == '\0' ) {
1816                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
1817                                     s, 0, 0 );
1818                                 rc = -1;
1819                                 continue;
1820                         }
1821
1822                         retcode = strtol( c, &next, 10 );
1823                         if ( next == NULL || next == c ) {
1824                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
1825                                     s, 0, 0 );
1826                                 rc = -1;
1827                                 continue;
1828                         }
1829
1830                         while ( isspace( (unsigned char) next[ 0 ] ) && next[ 0 ] != '\n' )
1831                                 next++;
1832                         if ( next[ 0 ] != '\0' && next[ 0 ] != '\n' ) {
1833                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
1834                                     s, 0, 0 );
1835                                 rc = -1;
1836                                 continue;
1837                         }
1838
1839                         /* FIXME: what if it's larger than max int? */
1840                         *code = (int)retcode;
1841
1842                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1843                         if ( c != NULL ) {
1844                                 *matched = c;
1845                         }
1846                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1847                         if ( c != NULL ) {
1848                                 *info = c;
1849                         }
1850                 } else {
1851                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1852                             s, 0, 0 );
1853
1854                         rc = -1;
1855                 }
1856         }
1857
1858         return( rc );
1859 }
1860
1861 int slap_read_controls(
1862         Operation *op,
1863         SlapReply *rs,
1864         Entry *e,
1865         const struct berval *oid,
1866         LDAPControl **ctrl )
1867 {
1868         int rc;
1869         struct berval bv;
1870         BerElementBuffer berbuf;
1871         BerElement *ber = (BerElement *) &berbuf;
1872         LDAPControl c;
1873         Operation myop;
1874
1875         Debug( LDAP_DEBUG_ANY, "%s slap_read_controls: (%s) %s\n",
1876                 op->o_log_prefix, oid->bv_val, e->e_dn );
1877
1878         rs->sr_entry = e;
1879         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1880                 op->o_preread_attrs : op->o_postread_attrs;
1881
1882         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1883         bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1884
1885         ber_init2( ber, &bv, LBER_USE_DER );
1886         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1887
1888         /* create new operation */
1889         myop = *op;
1890         /* FIXME: o_bd needed for ACL */
1891         myop.o_bd = op->o_bd;
1892         myop.o_res_ber = ber;
1893         myop.o_callback = NULL;
1894         myop.ors_slimit = 1;
1895         myop.ors_attrsonly = 0;
1896
1897         rc = slap_send_search_entry( &myop, rs );
1898         if( rc ) return rc;
1899
1900         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1901
1902         if( rc == -1 ) return LDAP_OTHER;
1903
1904         c.ldctl_oid = oid->bv_val;
1905         c.ldctl_iscritical = 0;
1906
1907         if ( *ctrl == NULL ) {
1908                 /* first try */
1909                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1910         } else {
1911                 /* retry: free previous try */
1912                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1913         }
1914
1915         **ctrl = c;
1916         return LDAP_SUCCESS;
1917 }
1918
1919 /* Map API errors to protocol errors... */
1920 int
1921 slap_map_api2result( SlapReply *rs )
1922 {
1923         switch(rs->sr_err) {
1924         case LDAP_SERVER_DOWN:
1925                 return LDAP_UNAVAILABLE;
1926         case LDAP_LOCAL_ERROR:
1927                 return LDAP_OTHER;
1928         case LDAP_ENCODING_ERROR:
1929         case LDAP_DECODING_ERROR:
1930                 return LDAP_PROTOCOL_ERROR;
1931         case LDAP_TIMEOUT:
1932                 return LDAP_UNAVAILABLE;
1933         case LDAP_AUTH_UNKNOWN:
1934                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1935         case LDAP_FILTER_ERROR:
1936                 rs->sr_text = "Filter error";
1937                 return LDAP_OTHER;
1938         case LDAP_USER_CANCELLED:
1939                 rs->sr_text = "User cancelled";
1940                 return LDAP_OTHER;
1941         case LDAP_PARAM_ERROR:
1942                 return LDAP_PROTOCOL_ERROR;
1943         case LDAP_NO_MEMORY:
1944                 return LDAP_OTHER;
1945         case LDAP_CONNECT_ERROR:
1946                 return LDAP_UNAVAILABLE;
1947         case LDAP_NOT_SUPPORTED:
1948                 return LDAP_UNWILLING_TO_PERFORM;
1949         case LDAP_CONTROL_NOT_FOUND:
1950                 return LDAP_PROTOCOL_ERROR;
1951         case LDAP_NO_RESULTS_RETURNED:
1952                 return LDAP_NO_SUCH_OBJECT;
1953         case LDAP_MORE_RESULTS_TO_RETURN:
1954                 rs->sr_text = "More results to return";
1955                 return LDAP_OTHER;
1956         case LDAP_CLIENT_LOOP:
1957         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1958                 return LDAP_LOOP_DETECT;
1959         default:
1960                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1961                 return rs->sr_err;
1962         }
1963 }
1964
1965
1966 slap_mask_t
1967 slap_attr_flags( AttributeName *an )
1968 {
1969         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1970
1971         if ( an == NULL ) {
1972                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1973
1974         } else {
1975                 flags |= an_find( an, slap_bv_all_operational_attrs )
1976                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1977                 flags |= an_find( an, slap_bv_all_user_attrs )
1978                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1979         }
1980
1981         return flags;
1982 }