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 1998-2006 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 "lutil.h"
  40
  41 const struct berval slap_dummy_bv = BER_BVNULL;
  42
  43 int slap_null_cb( Operation *op, SlapReply *rs )
  44 {
  45         return 0;
  46 }
  47
  48 int slap_freeself_cb( Operation *op, SlapReply *rs )
  49 {
  50         assert( op->o_callback != NULL );
  51
  52         op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
  53         op->o_callback = NULL;
  54
  55         return SLAP_CB_CONTINUE;
  56 }
  57
  58 int slap_replog_cb( Operation *op, SlapReply *rs )
  59 {
  60         if ( rs->sr_err == LDAP_SUCCESS ) {
  61                 replog( op );
  62         }
  63         return SLAP_CB_CONTINUE;
  64 }
  65
  66 static char *v2ref( BerVarray ref, const char *text )
  67 {
  68         size_t len = 0, i = 0;
  69         char *v2;
  70
  71         if(ref == NULL) {
  72                 if (text) {
  73                         return ch_strdup(text);
  74                 } else {
  75                         return NULL;
  76                 }
  77         }
  78
  79         if ( text != NULL ) {
  80                 len = strlen( text );
  81                 if (text[len-1] != '\n') {
  82                     i = 1;
  83                 }
  84         }
  85
  86         v2 = ch_malloc( len+i+sizeof("Referral:") );
  87
  88         if( text != NULL ) {
  89                 strcpy(v2, text);
  90                 if( i ) {
  91                         v2[len++] = '\n';
  92                 }
  93         }
  94         strcpy( v2+len, "Referral:" );
  95         len += sizeof("Referral:");
  96
  97         for( i=0; ref[i].bv_val != NULL; i++ ) {
  98                 v2 = ch_realloc( v2, len + ref[i].bv_len + 1 );
  99                 v2[len-1] = '\n';
 100                 AC_MEMCPY(&v2[len], ref[i].bv_val, ref[i].bv_len );
 101                 len += ref[i].bv_len;
 102                 if (ref[i].bv_val[ref[i].bv_len-1] != '/') {
 103                         ++len;
 104                 }
 105         }
 106
 107         v2[len-1] = '\0';
 108         return v2;
 109 }
 110
 111 ber_tag_t
 112 slap_req2res( ber_tag_t tag )
 113 {
 114         switch( tag ) {
 115         case LDAP_REQ_ADD:
 116         case LDAP_REQ_BIND:
 117         case LDAP_REQ_COMPARE:
 118         case LDAP_REQ_EXTENDED:
 119         case LDAP_REQ_MODIFY:
 120         case LDAP_REQ_MODRDN:
 121                 tag++;
 122                 break;
 123
 124         case LDAP_REQ_DELETE:
 125                 tag = LDAP_RES_DELETE;
 126                 break;
 127
 128         case LDAP_REQ_ABANDON:
 129         case LDAP_REQ_UNBIND:
 130                 tag = LBER_SEQUENCE;
 131                 break;
 132
 133         case LDAP_REQ_SEARCH:
 134                 tag = LDAP_RES_SEARCH_RESULT;
 135                 break;
 136
 137         default:
 138                 tag = LBER_SEQUENCE;
 139         }
 140
 141         return tag;
 142 }
 143
 144 static long send_ldap_ber(
 145         Connection *conn,
 146         BerElement *ber )
 147 {
 148         ber_len_t bytes;
 149
 150         ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
 151
 152         /* write only one pdu at a time - wait til it's our turn */
 153         ldap_pvt_thread_mutex_lock( &conn->c_write_mutex );
 154
 155         /* lock the connection */
 156         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 157
 158         /* write the pdu */
 159         while( 1 ) {
 160                 int err;
 161                 ber_socket_t    sd;
 162
 163                 if ( connection_state_closing( conn ) ) {
 164                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 165                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 166
 167                         return 0;
 168                 }
 169
 170                 if ( ber_flush( conn->c_sb, ber, 0 ) == 0 ) {
 171                         break;
 172                 }
 173
 174                 err = errno;
 175
 176                 /*
 177                  * we got an error.  if it's ewouldblock, we need to
 178                  * wait on the socket being writable.  otherwise, figure
 179                  * it's a hard error and return.
 180                  */
 181
 182                 Debug( LDAP_DEBUG_CONNS, "ber_flush failed errno=%d reason=\"%s\"\n",
 183                     err, sock_errstr(err), 0 );
 184
 185                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 186                         connection_closing( conn, "connection lost on write" );
 187
 188                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 189                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 190
 191                         return( -1 );
 192                 }
 193
 194                 /* wait for socket to be write-ready */
 195                 conn->c_writewaiter = 1;
 196                 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
 197                 slapd_set_write( sd, 1 );
 198
 199                 ldap_pvt_thread_cond_wait( &conn->c_write_cv, &conn->c_mutex );
 200                 conn->c_writewaiter = 0;
 201         }
 202
 203         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 204         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 205
 206         return bytes;
 207 }
 208
 209 static int
 210 send_ldap_control( BerElement *ber, LDAPControl *c )
 211 {
 212         int rc;
 213
 214         assert( c != NULL );
 215
 216         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 217
 218         if( c->ldctl_iscritical ) {
 219                 rc = ber_printf( ber, "b",
 220                         (ber_int_t) c->ldctl_iscritical ) ;
 221                 if( rc == -1 ) return rc;
 222         }
 223
 224         if( c->ldctl_value.bv_val != NULL ) {
 225                 rc = ber_printf( ber, "O", &c->ldctl_value );
 226                 if( rc == -1 ) return rc;
 227         }
 228
 229         rc = ber_printf( ber, /*{*/"N}" );
 230         if( rc == -1 ) return rc;
 231
 232         return 0;
 233 }
 234
 235 static int
 236 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 237 {
 238         int rc;
 239
 240         if( c == NULL )
 241                 return 0;
 242
 243         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 244         if( rc == -1 ) return rc;
 245
 246         for( ; *c != NULL; c++) {
 247                 rc = send_ldap_control( ber, *c );
 248                 if( rc == -1 ) return rc;
 249         }
 250
 251 #ifdef LDAP_DEVEL
 252         /* this is a hack to avoid having to modify op->s_ctrls */
 253         if( o->o_sortedresults ) {
 254                 BerElementBuffer berbuf;
 255                 BerElement *sber = (BerElement *) &berbuf;
 256                 LDAPControl sorted;
 257                 BER_BVZERO( &sorted.ldctl_value );
 258                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 259                 sorted.ldctl_iscritical = 0;
 260
 261                 ber_init2( sber, NULL, LBER_USE_DER );
 262
 263                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 264
 265                 if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
 266                         return -1;
 267                 }
 268
 269                 (void) ber_free_buf( ber );
 270
 271                 rc = send_ldap_control( ber, &sorted );
 272                 if( rc == -1 ) return rc;
 273         }
 274 #endif
 275
 276         rc = ber_printf( ber, /*{*/"N}" );
 277
 278         return rc;
 279 }
 280
 281 static int
 282 send_ldap_response(
 283         Operation *op,
 284         SlapReply *rs )
 285 {
 286         BerElementBuffer berbuf;
 287         BerElement      *ber = (BerElement *) &berbuf;
 288         int             rc = LDAP_SUCCESS;
 289         long    bytes;
 290
 291         if ( rs->sr_err == SLAPD_ABANDON ) {
 292                 rc = SLAPD_ABANDON;
 293                 goto clean2;
 294         }
 295
 296         if ( op->o_callback ) {
 297                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
 298
 299                 rc = SLAP_CB_CONTINUE;
 300                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
 301                         sc_next = op->o_callback->sc_next;
 302                         if ( op->o_callback->sc_response ) {
 303                                 slap_callback *sc2 = op->o_callback;
 304                                 rc = op->o_callback->sc_response( op, rs );
 305                                 if ( op->o_callback != sc2 ) {
 306                                         *sc_prev = op->o_callback;
 307                                 }
 308                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
 309                                 if ( op->o_callback != sc2 ) continue;
 310                         }
 311                         sc_prev = &op->o_callback->sc_next;
 312                 }
 313
 314                 op->o_callback = sc;
 315                 if ( rc != SLAP_CB_CONTINUE ) goto clean2;
 316         }
 317
 318 #ifdef LDAP_CONNECTIONLESS
 319         if (op->o_conn && op->o_conn->c_is_udp)
 320                 ber = op->o_res_ber;
 321         else
 322 #endif
 323         {
 324                 ber_init_w_nullc( ber, LBER_USE_DER );
 325                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 326         }
 327
 328         Debug( LDAP_DEBUG_TRACE,
 329                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 330                 rs->sr_msgid, rs->sr_tag, rs->sr_err );
 331
 332         if( rs->sr_ref ) {
 333                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 334                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 335                         NULL, NULL );
 336         }
 337
 338 #ifdef LDAP_CONNECTIONLESS
 339         if (op->o_conn && op->o_conn->c_is_udp &&
 340                 op->o_protocol == LDAP_VERSION2 )
 341         {
 342                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 343                         rs->sr_tag, rs->sr_err,
 344                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 345                 rs->sr_text == NULL ? "" : rs->sr_text );
 346         } else
 347 #endif
 348         if ( rs->sr_type == REP_INTERMEDIATE ) {
 349             rc = ber_printf( ber, "{it{" /*"}}"*/,
 350                         rs->sr_msgid, rs->sr_tag );
 351
 352         } else {
 353             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 354                 rs->sr_msgid, rs->sr_tag, rs->sr_err,
 355                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 356                 rs->sr_text == NULL ? "" : rs->sr_text );
 357         }
 358
 359         if( rc != -1 ) {
 360                 if ( rs->sr_ref != NULL ) {
 361                         assert( rs->sr_err == LDAP_REFERRAL );
 362                         rc = ber_printf( ber, "t{W}",
 363                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 364                 } else {
 365                         assert( rs->sr_err != LDAP_REFERRAL );
 366                 }
 367         }
 368
 369         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 370                 rc = ber_printf( ber, "tO",
 371                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 372         }
 373
 374         if( rc != -1 &&
 375                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 376         {
 377                 if ( rs->sr_rspoid != NULL ) {
 378                         rc = ber_printf( ber, "ts",
 379                                 rs->sr_type == REP_EXTENDED
 380                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 381                                 rs->sr_rspoid );
 382                 }
 383                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 384                         rc = ber_printf( ber, "tO",
 385                                 rs->sr_type == REP_EXTENDED
 386                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 387                                 rs->sr_rspdata );
 388                 }
 389         }
 390
 391         if( rc != -1 ) {
 392                 rc = ber_printf( ber, /*"{"*/ "N}" );
 393         }
 394
 395         if( rc != -1 ) {
 396                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 397         }
 398
 399         if( rc != -1 ) {
 400                 rc = ber_printf( ber, /*"{"*/ "N}" );
 401         }
 402
 403 #ifdef LDAP_CONNECTIONLESS
 404         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 405                 && rc != -1 )
 406         {
 407                 rc = ber_printf( ber, /*"{"*/ "N}" );
 408         }
 409 #endif
 410
 411         if ( rc == -1 ) {
 412                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 413
 414 #ifdef LDAP_CONNECTIONLESS
 415                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 416 #endif
 417                 {
 418                         ber_free_buf( ber );
 419                 }
 420                 goto cleanup;
 421         }
 422
 423         /* send BER */
 424         bytes = send_ldap_ber( op->o_conn, ber );
 425 #ifdef LDAP_CONNECTIONLESS
 426         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 427 #endif
 428         {
 429                 ber_free_buf( ber );
 430         }
 431
 432         if ( bytes < 0 ) {
 433                 Debug( LDAP_DEBUG_ANY,
 434                         "send_ldap_response: ber write failed\n",
 435                         0, 0, 0 );
 436
 437                 goto cleanup;
 438         }
 439
 440         ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
 441         ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
 442         ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
 443         ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
 444
 445 cleanup:;
 446         /* Tell caller that we did this for real, as opposed to being
 447          * overridden by a callback
 448          */
 449         rc = SLAP_CB_CONTINUE;
 450
 451 clean2:;
 452         if ( op->o_callback ) {
 453                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
 454
 455                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
 456                         sc_next = op->o_callback->sc_next;
 457                         if ( op->o_callback->sc_cleanup ) {
 458                                 slap_callback *sc2 = op->o_callback;
 459                                 (void)op->o_callback->sc_cleanup( op, rs );
 460                                 if ( op->o_callback != sc2 ) {
 461                                         *sc_prev = op->o_callback;
 462                                 }
 463                                 if ( !op->o_callback ) break;
 464                                 if ( op->o_callback != sc2 ) continue;
 465                         }
 466                         sc_prev = &op->o_callback->sc_next;
 467                 }
 468                 op->o_callback = sc;
 469         }
 470
 471
 472         if ( rs->sr_matched && rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 473                 free( (char *)rs->sr_matched );
 474                 rs->sr_matched = NULL;
 475         }
 476
 477         if ( rs->sr_ref && rs->sr_flags & REP_REF_MUSTBEFREED ) {
 478                 ber_bvarray_free( rs->sr_ref );
 479                 rs->sr_ref = NULL;
 480         }
 481
 482         return rc;
 483 }
 484
 485
 486 void
 487 send_ldap_disconnect( Operation *op, SlapReply *rs )
 488 {
 489 #define LDAP_UNSOLICITED_ERROR(e) \
 490         (  (e) == LDAP_PROTOCOL_ERROR \
 491         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 492         || (e) == LDAP_UNAVAILABLE )
 493
 494         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 495
 496         rs->sr_type = REP_EXTENDED;
 497
 498         Debug( LDAP_DEBUG_TRACE,
 499                 "send_ldap_disconnect %d:%s\n",
 500                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 501
 502         if ( op->o_protocol < LDAP_VERSION3 ) {
 503                 rs->sr_rspoid = NULL;
 504                 rs->sr_tag = slap_req2res( op->o_tag );
 505                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 506
 507         } else {
 508                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 509                 rs->sr_tag = LDAP_RES_EXTENDED;
 510                 rs->sr_msgid = 0;
 511         }
 512
 513         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 514                 Statslog( LDAP_DEBUG_STATS,
 515                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 516                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 517                         rs->sr_text ? rs->sr_text : "", 0 );
 518         }
 519 }
 520
 521 void
 522 slap_send_ldap_result( Operation *op, SlapReply *rs )
 523 {
 524         char *tmp = NULL;
 525         const char *otext = rs->sr_text;
 526         BerVarray oref = rs->sr_ref;
 527
 528         rs->sr_type = REP_RESULT;
 529
 530         /* Propagate Abandons so that cleanup callbacks can be processed */
 531         if ( rs->sr_err == SLAPD_ABANDON )
 532                 goto abandon;
 533
 534         assert( !LDAP_API_ERROR( rs->sr_err ) );
 535
 536         Debug( LDAP_DEBUG_TRACE,
 537                 "send_ldap_result: %s p=%d\n",
 538                 op->o_log_prefix, op->o_protocol, 0 );
 539
 540         Debug( LDAP_DEBUG_ARGS,
 541                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 542                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 543                 rs->sr_text ? rs->sr_text : "" );
 544
 545
 546         if( rs->sr_ref ) {
 547                 Debug( LDAP_DEBUG_ARGS,
 548                         "send_ldap_result: referral=\"%s\"\n",
 549                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 550                         NULL, NULL );
 551         }
 552
 553         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 554
 555         if ( rs->sr_err == LDAP_REFERRAL ) {
 556                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 557
 558                 if( rs->sr_ref == NULL ) {
 559                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 560                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 561                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 562                 }
 563         }
 564
 565         if ( op->o_protocol < LDAP_VERSION3 ) {
 566                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 567                 rs->sr_text = tmp;
 568                 rs->sr_ref = NULL;
 569         }
 570
 571         rs->sr_tag = slap_req2res( op->o_tag );
 572         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 573
 574 abandon:
 575         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 576                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 577                         char nbuf[64];
 578                         snprintf( nbuf, sizeof nbuf, "%d nentries=%d",
 579                                 rs->sr_err, rs->sr_nentries );
 580
 581                         Statslog( LDAP_DEBUG_STATS,
 582                         "%s SEARCH RESULT tag=%lu err=%s text=%s\n",
 583                                 op->o_log_prefix, rs->sr_tag, nbuf,
 584                                 rs->sr_text ? rs->sr_text : "", 0 );
 585                 } else {
 586                         Statslog( LDAP_DEBUG_STATS,
 587                                 "%s RESULT tag=%lu err=%d text=%s\n",
 588                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 589                                 rs->sr_text ? rs->sr_text : "", 0 );
 590                 }
 591         }
 592
 593         if( tmp != NULL ) ch_free(tmp);
 594         rs->sr_text = otext;
 595         rs->sr_ref = oref;
 596 }
 597
 598 void
 599 send_ldap_sasl( Operation *op, SlapReply *rs )
 600 {
 601         rs->sr_type = REP_SASL;
 602         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 603                 rs->sr_err,
 604                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 605
 606         rs->sr_tag = slap_req2res( op->o_tag );
 607         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 608
 609         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 610                 Statslog( LDAP_DEBUG_STATS,
 611                         "%s RESULT tag=%lu err=%d text=%s\n",
 612                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 613                         rs->sr_text ? rs->sr_text : "", 0 );
 614         }
 615 }
 616
 617 void
 618 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 619 {
 620         rs->sr_type = REP_EXTENDED;
 621
 622         Debug( LDAP_DEBUG_TRACE,
 623                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 624                 rs->sr_err,
 625                 rs->sr_rspoid ? rs->sr_rspoid : "",
 626                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 627
 628         rs->sr_tag = slap_req2res( op->o_tag );
 629         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 630
 631         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 632                 Statslog( LDAP_DEBUG_STATS,
 633                         "%s RESULT oid=%s err=%d text=%s\n",
 634                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 635                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 636         }
 637 }
 638
 639 void
 640 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 641 {
 642         rs->sr_type = REP_INTERMEDIATE;
 643         Debug( LDAP_DEBUG_TRACE,
 644                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 645                 rs->sr_err,
 646                 rs->sr_rspoid ? rs->sr_rspoid : "",
 647                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 648         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 649         rs->sr_msgid = op->o_msgid;
 650         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 651                 Statslog( LDAP_DEBUG_STATS2,
 652                         "%s INTERM oid=%s\n",
 653                         op->o_log_prefix,
 654                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 655         }
 656 }
 657
 658 /*
 659  * returns:
 660  *
 661  * LDAP_SUCCESS                 entry sent
 662  * LDAP_OTHER                   entry not sent (other)
 663  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 664  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 665  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 666  */
 667
 668 int
 669 slap_send_search_entry( Operation *op, SlapReply *rs )
 670 {
 671         BerElementBuffer berbuf;
 672         BerElement      *ber = (BerElement *) &berbuf;
 673         Attribute       *a;
 674         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 675         char            *edn;
 676         int             userattrs;
 677         AccessControlState acl_state = ACL_STATE_INIT;
 678         int                      attrsonly;
 679         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 680
 681         /* a_flags: array of flags telling if the i-th element will be
 682          *          returned or filtered out
 683          * e_flags: array of a_flags
 684          */
 685         char **e_flags = NULL;
 686
 687         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 688                 return LDAP_SIZELIMIT_EXCEEDED;
 689         }
 690
 691         rs->sr_type = REP_SEARCH;
 692
 693         /* eventually will loop through generated operational attribute types
 694          * currently implemented types include:
 695          *      entryDN, subschemaSubentry, and hasSubordinates */
 696         /* NOTE: moved before overlays callback circling because
 697          * they may modify entry and other stuff in rs */
 698         /* check for special all operational attributes ("+") type */
 699         /* FIXME: maybe we could se this flag at the operation level;
 700          * however, in principle the caller of send_search_entry() may
 701          * change the attribute list at each call */
 702         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 703
 704         rc = backend_operational( op, rs );
 705         if ( rc ) {
 706                 goto error_return;
 707         }
 708
 709         if ( op->o_callback ) {
 710                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
 711
 712                 rc = SLAP_CB_CONTINUE;
 713                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next )
 714                 {
 715                         sc_next = op->o_callback->sc_next;
 716                         if ( op->o_callback->sc_response ) {
 717                                 slap_callback *sc2 = op->o_callback;
 718                                 rc = op->o_callback->sc_response( op, rs );
 719                                 if ( op->o_callback != sc2 ) {
 720                                         *sc_prev = op->o_callback;
 721                                 }
 722                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
 723                                 if ( op->o_callback != sc2 ) continue;
 724                         }
 725                         sc_prev = &op->o_callback->sc_next;
 726                 }
 727
 728                 op->o_callback = sc;
 729                 if ( rc != SLAP_CB_CONTINUE ) goto error_return;
 730         }
 731
 732         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 733                 op->o_connid, rs->sr_entry->e_name.bv_val,
 734                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 735
 736         attrsonly = op->ors_attrsonly;
 737
 738         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 739                 Debug( LDAP_DEBUG_ACL,
 740                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 741                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 742
 743                 rc = LDAP_INSUFFICIENT_ACCESS;
 744                 goto error_return;
 745         }
 746
 747         edn = rs->sr_entry->e_nname.bv_val;
 748
 749         if ( op->o_res_ber ) {
 750                 /* read back control or LDAP_CONNECTIONLESS */
 751             ber = op->o_res_ber;
 752         } else {
 753                 struct berval   bv;
 754
 755                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 756                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 757
 758                 ber_init2( ber, &bv, LBER_USE_DER );
 759                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 760         }
 761
 762 #ifdef LDAP_CONNECTIONLESS
 763         if ( op->o_conn && op->o_conn->c_is_udp ) {
 764                 /* CONNECTIONLESS */
 765                 if ( op->o_protocol == LDAP_VERSION2 ) {
 766                 rc = ber_printf(ber, "t{O{" /*}}*/,
 767                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 768                 } else {
 769                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 770                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 771                 }
 772         } else
 773 #endif
 774         if ( op->o_res_ber ) {
 775                 /* read back control */
 776             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 777         } else {
 778             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 779                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 780         }
 781
 782         if ( rc == -1 ) {
 783                 Debug( LDAP_DEBUG_ANY,
 784                         "send_search_entry: conn %lu  ber_printf failed\n",
 785                         op->o_connid, 0, 0 );
 786
 787                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 788                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 789                 rc = rs->sr_err;
 790                 goto error_return;
 791         }
 792
 793         /* check for special all user attributes ("*") type */
 794         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 795
 796         /* create an array of arrays of flags. Each flag corresponds
 797          * to particular value of attribute and equals 1 if value matches
 798          * to ValuesReturnFilter or 0 if not
 799          */
 800         if ( op->o_vrFilter != NULL ) {
 801                 int     k = 0;
 802                 size_t  size;
 803
 804                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 805                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 806                 }
 807
 808                 size = i * sizeof(char *) + k;
 809                 if ( size > 0 ) {
 810                         char    *a_flags;
 811                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 812                         if( e_flags == NULL ) {
 813                         Debug( LDAP_DEBUG_ANY,
 814                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 815                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 816                                 ber_free( ber, 1 );
 817
 818                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 819                                 goto error_return;
 820                         }
 821                         a_flags = (char *)(e_flags + i);
 822                         memset( a_flags, 0, k );
 823                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 824                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 825                                 e_flags[i] = a_flags;
 826                                 a_flags += j;
 827                         }
 828
 829                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 830                         if ( rc == -1 ) {
 831                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 832                                         "conn %lu matched values filtering failed\n",
 833                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 834                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 835                                 send_ldap_error( op, rs, LDAP_OTHER,
 836                                         "matched values filtering error" );
 837                                 rc = rs->sr_err;
 838                                 goto error_return;
 839                         }
 840                 }
 841         }
 842
 843         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 844                 AttributeDescription *desc = a->a_desc;
 845                 int finish = 0;
 846
 847                 if ( rs->sr_attrs == NULL ) {
 848                         /* all user attrs request, skip operational attributes */
 849                         if( is_at_operational( desc->ad_type ) ) {
 850                                 continue;
 851                         }
 852
 853                 } else {
 854                         /* specific attrs requested */
 855                         if ( is_at_operational( desc->ad_type ) ) {
 856                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
 857                                         !ad_inlist( desc, rs->sr_attrs ) )
 858                                 {
 859                                         continue;
 860                                 }
 861
 862                         } else {
 863                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 864                                         continue;
 865                                 }
 866                         }
 867                 }
 868
 869                 if ( attrsonly ) {
 870                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 871                                 ACL_READ, &acl_state ) )
 872                         {
 873                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 874                                         "conn %lu access to attribute %s not allowed\n",
 875                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 876                                 continue;
 877                         }
 878
 879                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 880                                 Debug( LDAP_DEBUG_ANY,
 881                                         "send_search_entry: conn %lu  ber_printf failed\n",
 882                                         op->o_connid, 0, 0 );
 883
 884                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 885                                 send_ldap_error( op, rs, LDAP_OTHER,
 886                                         "encoding description error");
 887                                 rc = rs->sr_err;
 888                                 goto error_return;
 889                         }
 890                         finish = 1;
 891
 892                 } else {
 893                         int first = 1;
 894                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
 895                                 if ( ! access_allowed( op, rs->sr_entry,
 896                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
 897                                 {
 898                                         Debug( LDAP_DEBUG_ACL,
 899                                                 "send_search_entry: conn %lu "
 900                                                 "access to attribute %s, value #%d not allowed\n",
 901                                                 op->o_connid, desc->ad_cname.bv_val, i );
 902
 903                                         continue;
 904                                 }
 905
 906                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
 907                                         continue;
 908                                 }
 909
 910                                 if ( first ) {
 911                                         first = 0;
 912                                         finish = 1;
 913                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 914                                                 Debug( LDAP_DEBUG_ANY,
 915                                                         "send_search_entry: conn %lu  ber_printf failed\n",
 916                                                         op->o_connid, 0, 0 );
 917
 918                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 919                                                 send_ldap_error( op, rs, LDAP_OTHER,
 920                                                         "encoding description error");
 921                                                 rc = rs->sr_err;
 922                                                 goto error_return;
 923                                         }
 924                                 }
 925                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
 926                                         Debug( LDAP_DEBUG_ANY,
 927                                                 "send_search_entry: conn %lu  "
 928                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
 929
 930                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 931                                         send_ldap_error( op, rs, LDAP_OTHER,
 932                                                 "encoding values error" );
 933                                         rc = rs->sr_err;
 934                                         goto error_return;
 935                                 }
 936                         }
 937                 }
 938
 939                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
 940                         Debug( LDAP_DEBUG_ANY,
 941                                 "send_search_entry: conn %lu ber_printf failed\n",
 942                                 op->o_connid, 0, 0 );
 943
 944                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 945                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
 946                         rc = rs->sr_err;
 947                         goto error_return;
 948                 }
 949         }
 950
 951         /* NOTE: moved before overlays callback circling because
 952          * they may modify entry and other stuff in rs */
 953         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
 954                 int     k = 0;
 955                 size_t  size;
 956
 957                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 958                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 959                 }
 960
 961                 size = i * sizeof(char *) + k;
 962                 if ( size > 0 ) {
 963                         char    *a_flags, **tmp;
 964
 965                         /*
 966                          * Reuse previous memory - we likely need less space
 967                          * for operational attributes
 968                          */
 969                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
 970                                 op->o_tmpmemctx );
 971                         if ( tmp == NULL ) {
 972                                 Debug( LDAP_DEBUG_ANY,
 973                                         "send_search_entry: conn %lu "
 974                                         "not enough memory "
 975                                         "for matched values filtering\n",
 976                                         op->o_connid, 0, 0 );
 977                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 978                                 send_ldap_error( op, rs, LDAP_OTHER,
 979                                         "not enough memory for matched values filtering" );
 980                                 goto error_return;
 981                         }
 982                         e_flags = tmp;
 983                         a_flags = (char *)(e_flags + i);
 984                         memset( a_flags, 0, k );
 985                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 986                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 987                                 e_flags[i] = a_flags;
 988                                 a_flags += j;
 989                         }
 990                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
 991
 992                         if ( rc == -1 ) {
 993                                 Debug( LDAP_DEBUG_ANY,
 994                                         "send_search_entry: conn %lu "
 995                                         "matched values filtering failed\n",
 996                                         op->o_connid ? op->o_connid : 0, 0, 0);
 997                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 998                                 send_ldap_error( op, rs, LDAP_OTHER,
 999                                         "matched values filtering error" );
1000                                 rc = rs->sr_err;
1001                                 goto error_return;
1002                         }
1003                 }
1004         }
1005
1006         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1007                 AttributeDescription *desc = a->a_desc;
1008
1009                 if ( rs->sr_attrs == NULL ) {
1010                         /* all user attrs request, skip operational attributes */
1011                         if( is_at_operational( desc->ad_type ) ) {
1012                                 continue;
1013                         }
1014
1015                 } else {
1016                         /* specific attrs requested */
1017                         if( is_at_operational( desc->ad_type ) ) {
1018                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1019                                         !ad_inlist( desc, rs->sr_attrs ) )
1020                                 {
1021                                         continue;
1022                                 }
1023                         } else {
1024                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1025                                         continue;
1026                                 }
1027                         }
1028                 }
1029
1030                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1031                         ACL_READ, &acl_state ) )
1032                 {
1033                         Debug( LDAP_DEBUG_ACL,
1034                                 "send_search_entry: conn %lu "
1035                                 "access to attribute %s not allowed\n",
1036                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1037
1038                         continue;
1039                 }
1040
1041                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1042                 if ( rc == -1 ) {
1043                         Debug( LDAP_DEBUG_ANY,
1044                                 "send_search_entry: conn %lu  "
1045                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1046
1047                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1048                         send_ldap_error( op, rs, LDAP_OTHER,
1049                                 "encoding description error" );
1050                         rc = rs->sr_err;
1051                         goto error_return;
1052                 }
1053
1054                 if ( ! attrsonly ) {
1055                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1056                                 if ( ! access_allowed( op, rs->sr_entry,
1057                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1058                                 {
1059                                         Debug( LDAP_DEBUG_ACL,
1060                                                 "send_search_entry: conn %lu "
1061                                                 "access to %s, value %d not allowed\n",
1062                                                 op->o_connid, desc->ad_cname.bv_val, i );
1063
1064                                         continue;
1065                                 }
1066
1067                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1068                                         continue;
1069                                 }
1070
1071                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1072                                         Debug( LDAP_DEBUG_ANY,
1073                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1074                                                 op->o_connid, 0, 0 );
1075
1076                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1077                                         send_ldap_error( op, rs, LDAP_OTHER,
1078                                                 "encoding values error" );
1079                                         rc = rs->sr_err;
1080                                         goto error_return;
1081                                 }
1082                         }
1083                 }
1084
1085                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1086                         Debug( LDAP_DEBUG_ANY,
1087                                 "send_search_entry: conn %lu  ber_printf failed\n",
1088                                 op->o_connid, 0, 0 );
1089
1090                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1091                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1092                         rc = rs->sr_err;
1093                         goto error_return;
1094                 }
1095         }
1096
1097         /* free e_flags */
1098         if ( e_flags ) {
1099                 slap_sl_free( e_flags, op->o_tmpmemctx );
1100                 e_flags = NULL;
1101         }
1102
1103         rc = ber_printf( ber, /*{{*/ "}N}" );
1104
1105         if( rc != -1 ) {
1106                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1107         }
1108
1109         if( rc != -1 ) {
1110 #ifdef LDAP_CONNECTIONLESS
1111                 if( op->o_conn && op->o_conn->c_is_udp ) {
1112                         if ( op->o_protocol != LDAP_VERSION2 ) {
1113                                 rc = ber_printf( ber, /*{*/ "N}" );
1114                         }
1115                 } else
1116 #endif
1117                 if ( op->o_res_ber == NULL ) {
1118                         rc = ber_printf( ber, /*{*/ "N}" );
1119                 }
1120         }
1121
1122         if ( rc == -1 ) {
1123                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1124
1125                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1126                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1127                 rc = rs->sr_err;
1128                 goto error_return;
1129         }
1130
1131         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1132                 be_entry_release_rw( op, rs->sr_entry, 0 );
1133                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1134                 rs->sr_entry = NULL;
1135         }
1136
1137         if ( op->o_res_ber == NULL ) {
1138                 bytes = send_ldap_ber( op->o_conn, ber );
1139                 ber_free_buf( ber );
1140
1141                 if ( bytes < 0 ) {
1142                         Debug( LDAP_DEBUG_ANY,
1143                                 "send_search_entry: conn %lu  ber write failed.\n",
1144                                 op->o_connid, 0, 0 );
1145
1146                         rc = LDAP_UNAVAILABLE;
1147                         goto error_return;
1148                 }
1149                 rs->sr_nentries++;
1150
1151                 ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
1152                 ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1153                 ldap_pvt_mp_add_ulong( slap_counters.sc_entries, 1 );
1154                 ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1155                 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
1156         }
1157
1158         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1159             op->o_log_prefix, edn, 0, 0, 0 );
1160
1161         Debug( LDAP_DEBUG_TRACE,
1162                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1163
1164         rc = LDAP_SUCCESS;
1165
1166 error_return:;
1167         if ( op->o_callback ) {
1168                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
1169
1170                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1171                         sc_next = op->o_callback->sc_next;
1172                         if ( op->o_callback->sc_cleanup ) {
1173                                 slap_callback *sc2 = op->o_callback;
1174                                 (void)op->o_callback->sc_cleanup( op, rs );
1175                                 if ( op->o_callback != sc2 ) {
1176                                         *sc_prev = op->o_callback;
1177                                 }
1178                                 if ( !op->o_callback ) break;
1179                                 if ( op->o_callback != sc2 ) continue;
1180                         }
1181                         sc_prev = &op->o_callback->sc_next;
1182                 }
1183                 op->o_callback = sc;
1184         }
1185
1186         if ( e_flags ) {
1187                 slap_sl_free( e_flags, op->o_tmpmemctx );
1188         }
1189
1190         if ( rs->sr_operational_attrs ) {
1191                 attrs_free( rs->sr_operational_attrs );
1192                 rs->sr_operational_attrs = NULL;
1193         }
1194         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1195
1196         /* FIXME: I think rs->sr_type should be explicitly set to
1197          * REP_SEARCH here. That's what it was when we entered this
1198          * function. send_ldap_error may have changed it, but we
1199          * should set it back so that the cleanup functions know
1200          * what they're doing.
1201          */
1202         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1203                 && rs->sr_entry
1204                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1205         {
1206                 entry_free( rs->sr_entry );
1207                 rs->sr_entry = NULL;
1208                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1209         }
1210
1211         return( rc );
1212 }
1213
1214 int
1215 slap_send_search_reference( Operation *op, SlapReply *rs )
1216 {
1217         BerElementBuffer berbuf;
1218         BerElement      *ber = (BerElement *) &berbuf;
1219         int rc = 0;
1220         int bytes;
1221
1222         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1223         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1224
1225         rs->sr_type = REP_SEARCHREF;
1226         if ( op->o_callback ) {
1227                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
1228
1229                 rc = SLAP_CB_CONTINUE;
1230                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1231                         sc_next = op->o_callback->sc_next;
1232                         if ( op->o_callback->sc_response ) {
1233                                 slap_callback *sc2 = op->o_callback;
1234                                 rc = op->o_callback->sc_response( op, rs );
1235                                 if ( op->o_callback != sc2 ) {
1236                                         *sc_prev = op->o_callback;
1237                                 }
1238                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
1239                                 if ( op->o_callback != sc2 ) continue;
1240                         }
1241                         sc_prev = &op->o_callback->sc_next;
1242                 }
1243
1244                 op->o_callback = sc;
1245                 if ( rc != SLAP_CB_CONTINUE ) goto rel;
1246         }
1247
1248         Debug( LDAP_DEBUG_TRACE,
1249                 "=> send_search_reference: dn=\"%s\"\n",
1250                 rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)", 0, 0 );
1251
1252         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1253                 ad_entry, NULL, ACL_READ, NULL ) )
1254         {
1255                 Debug( LDAP_DEBUG_ACL,
1256                         "send_search_reference: access to entry not allowed\n",
1257                     0, 0, 0 );
1258                 rc = 1;
1259                 goto rel;
1260         }
1261
1262         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1263                 ad_ref, NULL, ACL_READ, NULL ) )
1264         {
1265                 Debug( LDAP_DEBUG_ACL,
1266                         "send_search_reference: access "
1267                         "to reference not allowed\n",
1268                     0, 0, 0 );
1269                 rc = 1;
1270                 goto rel;
1271         }
1272
1273         if( op->o_domain_scope ) {
1274                 Debug( LDAP_DEBUG_ANY,
1275                         "send_search_reference: domainScope control in (%s)\n",
1276                         rs->sr_entry->e_dn, 0, 0 );
1277                 rc = 0;
1278                 goto rel;
1279         }
1280
1281         if( rs->sr_ref == NULL ) {
1282                 Debug( LDAP_DEBUG_ANY,
1283                         "send_search_reference: null ref in (%s)\n",
1284                         rs->sr_entry ? rs->sr_entry->e_dn : "(null)", 0, 0 );
1285                 rc = 1;
1286                 goto rel;
1287         }
1288
1289         if( op->o_protocol < LDAP_VERSION3 ) {
1290                 rc = 0;
1291                 /* save the references for the result */
1292                 if( rs->sr_ref[0].bv_val != NULL ) {
1293                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1294                                 rc = LDAP_OTHER;
1295                 }
1296                 goto rel;
1297         }
1298
1299 #ifdef LDAP_CONNECTIONLESS
1300         if( op->o_conn && op->o_conn->c_is_udp ) {
1301                 ber = op->o_res_ber;
1302         } else
1303 #endif
1304         {
1305                 ber_init_w_nullc( ber, LBER_USE_DER );
1306                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1307         }
1308
1309         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1310                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1311
1312         if( rc != -1 ) {
1313                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1314         }
1315
1316         if( rc != -1 ) {
1317                 rc = ber_printf( ber, /*"{"*/ "N}" );
1318         }
1319
1320         if ( rc == -1 ) {
1321                 Debug( LDAP_DEBUG_ANY,
1322                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1323
1324 #ifdef LDAP_CONNECTIONLESS
1325                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1326 #endif
1327                 ber_free_buf( ber );
1328                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1329                 goto rel;
1330         }
1331
1332         rc = 0;
1333         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1334                 be_entry_release_rw( op, rs->sr_entry, 0 );
1335                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1336                 rs->sr_entry = NULL;
1337         }
1338
1339 #ifdef LDAP_CONNECTIONLESS
1340         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1341 #endif
1342         bytes = send_ldap_ber( op->o_conn, ber );
1343         ber_free_buf( ber );
1344
1345         ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
1346         ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1347         ldap_pvt_mp_add_ulong( slap_counters.sc_refs, 1 );
1348         ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1349         ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
1350 #ifdef LDAP_CONNECTIONLESS
1351         }
1352 #endif
1353         if ( rs->sr_ref != NULL ) {
1354                 int     r;
1355
1356                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1357                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1358                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1359                                 0, 0 );
1360                 }
1361
1362         } else {
1363                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1364                         op->o_log_prefix, 0, 0, 0, 0 );
1365         }
1366
1367         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1368
1369 rel:
1370         if ( op->o_callback ) {
1371                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
1372
1373                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1374                         sc_next = op->o_callback->sc_next;
1375                         if ( op->o_callback->sc_cleanup ) {
1376                                 slap_callback *sc2 = op->o_callback;
1377                                 (void)op->o_callback->sc_cleanup( op, rs );
1378                                 if ( op->o_callback != sc2 ) {
1379                                         *sc_prev = op->o_callback;
1380                                 }
1381                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
1382                                 if ( op->o_callback != sc2 ) continue;
1383                         }
1384                         sc_prev = &op->o_callback->sc_next;
1385                 }
1386                 op->o_callback = sc;
1387         }
1388
1389         return rc;
1390 }
1391
1392 int
1393 str2result(
1394     char        *s,
1395     int         *code,
1396     char        **matched,
1397     char        **info )
1398 {
1399         int     rc;
1400         char    *c;
1401
1402         *code = LDAP_SUCCESS;
1403         *matched = NULL;
1404         *info = NULL;
1405
1406         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1407                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1408                     s, 0, 0 );
1409
1410                 return( -1 );
1411         }
1412
1413         rc = 0;
1414         while ( (s = strchr( s, '\n' )) != NULL ) {
1415                 *s++ = '\0';
1416                 if ( *s == '\0' ) {
1417                         break;
1418                 }
1419                 if ( (c = strchr( s, ':' )) != NULL ) {
1420                         c++;
1421                 }
1422
1423                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1424                         if ( c != NULL && lutil_atoi( code, c ) != 0 ) {
1425                                 goto bailout;
1426                         }
1427                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1428                         if ( c != NULL ) {
1429                                 *matched = c;
1430                         }
1431                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1432                         if ( c != NULL ) {
1433                                 *info = c;
1434                         }
1435                 } else {
1436 bailout:;
1437                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1438                             s, 0, 0 );
1439
1440                         rc = -1;
1441                 }
1442         }
1443
1444         return( rc );
1445 }
1446
1447 int slap_read_controls(
1448         Operation *op,
1449         SlapReply *rs,
1450         Entry *e,
1451         const struct berval *oid,
1452         LDAPControl **ctrl )
1453 {
1454         int rc;
1455         struct berval bv;
1456         BerElementBuffer berbuf;
1457         BerElement *ber = (BerElement *) &berbuf;
1458         LDAPControl c;
1459         Operation myop;
1460
1461         Debug( LDAP_DEBUG_ANY, "slap_read_controls: (%s) %s\n",
1462                 oid->bv_val, e->e_dn, 0 );
1463
1464         rs->sr_entry = e;
1465         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1466                 op->o_preread_attrs : op->o_postread_attrs;
1467
1468         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1469         bv.bv_val = op->o_tmpalloc(bv.bv_len, op->o_tmpmemctx );
1470
1471         ber_init2( ber, &bv, LBER_USE_DER );
1472         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1473
1474         /* create new operation */
1475         myop = *op;
1476         myop.o_bd = NULL;
1477         myop.o_res_ber = ber;
1478         myop.o_callback = NULL;
1479
1480         rc = slap_send_search_entry( &myop, rs );
1481         if( rc ) return rc;
1482
1483         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1484
1485         if( rc == LBER_ERROR ) return LDAP_OTHER;
1486
1487         c.ldctl_oid = oid->bv_val;
1488         c.ldctl_iscritical = 0;
1489
1490         if ( *ctrl == NULL ) {
1491                 /* first try */
1492                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1493         } else {
1494                 /* retry: free previous try */
1495                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1496         }
1497
1498         **ctrl = c;
1499         return LDAP_SUCCESS;
1500 }
1501
1502 /* Map API errors to protocol errors... */
1503 int
1504 slap_map_api2result( SlapReply *rs )
1505 {
1506         switch(rs->sr_err) {
1507         case LDAP_SERVER_DOWN:
1508                 return LDAP_UNAVAILABLE;
1509         case LDAP_LOCAL_ERROR:
1510                 return LDAP_OTHER;
1511         case LDAP_ENCODING_ERROR:
1512         case LDAP_DECODING_ERROR:
1513                 return LDAP_PROTOCOL_ERROR;
1514         case LDAP_TIMEOUT:
1515                 return LDAP_UNAVAILABLE;
1516         case LDAP_AUTH_UNKNOWN:
1517                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1518         case LDAP_FILTER_ERROR:
1519                 rs->sr_text = "Filter error";
1520                 return LDAP_OTHER;
1521         case LDAP_USER_CANCELLED:
1522                 rs->sr_text = "User cancelled";
1523                 return LDAP_OTHER;
1524         case LDAP_PARAM_ERROR:
1525                 return LDAP_PROTOCOL_ERROR;
1526         case LDAP_NO_MEMORY:
1527                 return LDAP_OTHER;
1528         case LDAP_CONNECT_ERROR:
1529                 return LDAP_UNAVAILABLE;
1530         case LDAP_NOT_SUPPORTED:
1531                 return LDAP_UNWILLING_TO_PERFORM;
1532         case LDAP_CONTROL_NOT_FOUND:
1533                 return LDAP_PROTOCOL_ERROR;
1534         case LDAP_NO_RESULTS_RETURNED:
1535                 return LDAP_NO_SUCH_OBJECT;
1536         case LDAP_MORE_RESULTS_TO_RETURN:
1537                 rs->sr_text = "More results to return";
1538                 return LDAP_OTHER;
1539         case LDAP_CLIENT_LOOP:
1540         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1541                 return LDAP_LOOP_DETECT;
1542         default:
1543                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1544                 return rs->sr_err;
1545         }
1546 }
1547
1548
1549 slap_mask_t
1550 slap_attr_flags( AttributeName *an )
1551 {
1552         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1553
1554         if ( an == NULL ) {
1555                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1556
1557         } else {
1558                 flags |= an_find( an, &AllOper )
1559                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1560                 flags |= an_find( an, &AllUser )
1561                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1562         }
1563
1564         return flags;
1565 }
1566