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 1998-2005 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27 #include "portable.h"
  28
  29 #include <stdio.h>
  30
  31 #include <ac/socket.h>
  32 #include <ac/errno.h>
  33 #include <ac/string.h>
  34 #include <ac/ctype.h>
  35 #include <ac/time.h>
  36 #include <ac/unistd.h>
  37
  38 #include "slap.h"
  39
  40 const struct berval slap_dummy_bv = BER_BVNULL;
  41
  42 int slap_null_cb( Operation *op, SlapReply *rs )
  43 {
  44         return 0;
  45 }
  46
  47 int slap_freeself_cb( Operation *op, SlapReply *rs )
  48 {
  49         assert( op->o_callback != NULL );
  50
  51         op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
  52         op->o_callback = NULL;
  53
  54         return SLAP_CB_CONTINUE;
  55 }
  56
  57 int slap_replog_cb( Operation *op, SlapReply *rs )
  58 {
  59         if ( rs->sr_err == LDAP_SUCCESS ) {
  60                 replog( op );
  61         }
  62         return SLAP_CB_CONTINUE;
  63 }
  64
  65 static char *v2ref( BerVarray ref, const char *text )
  66 {
  67         size_t len = 0, i = 0;
  68         char *v2;
  69
  70         if(ref == NULL) {
  71                 if (text) {
  72                         return ch_strdup(text);
  73                 } else {
  74                         return NULL;
  75                 }
  76         }
  77
  78         if ( text != NULL ) {
  79                 len = strlen( text );
  80                 if (text[len-1] != '\n') {
  81                     i = 1;
  82                 }
  83         }
  84
  85         v2 = SLAP_MALLOC( len+i+sizeof("Referral:") );
  86         if( v2 == NULL ) {
  87                 Debug( LDAP_DEBUG_ANY, "v2ref: SLAP_MALLOC failed", 0, 0, 0 );
  88                 return NULL;
  89         }
  90
  91         if( text != NULL ) {
  92                 strcpy(v2, text);
  93                 if( i ) {
  94                         v2[len++] = '\n';
  95                 }
  96         }
  97         strcpy( v2+len, "Referral:" );
  98         len += sizeof("Referral:");
  99
 100         for( i=0; ref[i].bv_val != NULL; i++ ) {
 101                 v2 = SLAP_REALLOC( v2, len + ref[i].bv_len + 1 );
 102                 if( v2 == NULL ) {
 103                         Debug( LDAP_DEBUG_ANY, "v2ref: SLAP_MALLOC failed", 0, 0, 0 );
 104                         return NULL;
 105                 }
 106                 v2[len-1] = '\n';
 107                 AC_MEMCPY(&v2[len], ref[i].bv_val, ref[i].bv_len );
 108                 len += ref[i].bv_len;
 109                 if (ref[i].bv_val[ref[i].bv_len-1] != '/') {
 110                         ++len;
 111                 }
 112         }
 113
 114         v2[len-1] = '\0';
 115         return v2;
 116 }
 117
 118 static ber_tag_t req2res( ber_tag_t tag )
 119 {
 120         switch( tag ) {
 121         case LDAP_REQ_ADD:
 122         case LDAP_REQ_BIND:
 123         case LDAP_REQ_COMPARE:
 124         case LDAP_REQ_EXTENDED:
 125         case LDAP_REQ_MODIFY:
 126         case LDAP_REQ_MODRDN:
 127                 tag++;
 128                 break;
 129
 130         case LDAP_REQ_DELETE:
 131                 tag = LDAP_RES_DELETE;
 132                 break;
 133
 134         case LDAP_REQ_ABANDON:
 135         case LDAP_REQ_UNBIND:
 136                 tag = LBER_SEQUENCE;
 137                 break;
 138
 139         case LDAP_REQ_SEARCH:
 140                 tag = LDAP_RES_SEARCH_RESULT;
 141                 break;
 142
 143         default:
 144                 tag = LBER_SEQUENCE;
 145         }
 146
 147         return tag;
 148 }
 149
 150 static long send_ldap_ber(
 151         Connection *conn,
 152         BerElement *ber )
 153 {
 154         ber_len_t bytes;
 155
 156         ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
 157
 158         /* write only one pdu at a time - wait til it's our turn */
 159         ldap_pvt_thread_mutex_lock( &conn->c_write_mutex );
 160
 161         /* lock the connection */
 162         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 163
 164         /* write the pdu */
 165         while( 1 ) {
 166                 int err;
 167                 ber_socket_t    sd;
 168
 169                 if ( connection_state_closing( conn ) ) {
 170                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 171                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 172
 173                         return 0;
 174                 }
 175
 176                 if ( ber_flush( conn->c_sb, ber, 0 ) == 0 ) {
 177                         break;
 178                 }
 179
 180                 err = errno;
 181
 182                 /*
 183                  * we got an error.  if it's ewouldblock, we need to
 184                  * wait on the socket being writable.  otherwise, figure
 185                  * it's a hard error and return.
 186                  */
 187
 188                 Debug( LDAP_DEBUG_CONNS, "ber_flush failed errno=%d reason=\"%s\"\n",
 189                     err, sock_errstr(err), 0 );
 190
 191                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 192                         connection_closing( conn );
 193
 194                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 195                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 196
 197                         return( -1 );
 198                 }
 199
 200                 /* wait for socket to be write-ready */
 201                 conn->c_writewaiter = 1;
 202                 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
 203                 slapd_set_write( sd, 1 );
 204
 205                 ldap_pvt_thread_cond_wait( &conn->c_write_cv, &conn->c_mutex );
 206                 conn->c_writewaiter = 0;
 207         }
 208
 209         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 210         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 211
 212         return bytes;
 213 }
 214
 215 static int
 216 send_ldap_control( BerElement *ber, LDAPControl *c )
 217 {
 218         int rc;
 219
 220         assert( c != NULL );
 221
 222         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 223
 224         if( c->ldctl_iscritical ) {
 225                 rc = ber_printf( ber, "b",
 226                         (ber_int_t) c->ldctl_iscritical ) ;
 227                 if( rc == -1 ) return rc;
 228         }
 229
 230         if( c->ldctl_value.bv_val != NULL ) {
 231                 rc = ber_printf( ber, "O", &c->ldctl_value );
 232                 if( rc == -1 ) return rc;
 233         }
 234
 235         rc = ber_printf( ber, /*{*/"N}" );
 236         if( rc == -1 ) return rc;
 237
 238         return 0;
 239 }
 240
 241 static int
 242 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 243 {
 244         int rc;
 245
 246         if( c == NULL )
 247                 return 0;
 248
 249         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 250         if( rc == -1 ) return rc;
 251
 252         for( ; *c != NULL; c++) {
 253                 rc = send_ldap_control( ber, *c );
 254                 if( rc == -1 ) return rc;
 255         }
 256
 257 #ifdef LDAP_DEVEL
 258         /* this is a hack to avoid having to modify op->s_ctrls */
 259         if( o->o_sortedresults ) {
 260                 BerElementBuffer berbuf;
 261                 BerElement *sber = (BerElement *) &berbuf;
 262                 LDAPControl sorted;
 263                 BER_BVZERO( &sorted.ldctl_value );
 264                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 265                 sorted.ldctl_iscritical = 0;
 266
 267                 ber_init2( sber, NULL, LBER_USE_DER );
 268
 269                 ber_printf( sber, "{i}", LDAP_UNWILLING_TO_PERFORM );
 270
 271                 if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
 272                         return -1;
 273                 }
 274
 275                 (void) ber_free_buf( ber );
 276
 277                 rc = send_ldap_control( ber, &sorted );
 278                 if( rc == -1 ) return rc;
 279         }
 280 #endif
 281
 282         rc = ber_printf( ber, /*{*/"N}" );
 283
 284         return rc;
 285 }
 286
 287 static int
 288 send_ldap_response(
 289         Operation *op,
 290         SlapReply *rs )
 291 {
 292         BerElementBuffer berbuf;
 293         BerElement      *ber = (BerElement *) &berbuf;
 294         int             rc = LDAP_SUCCESS;
 295         long    bytes;
 296
 297         if ( rs->sr_err == SLAPD_ABANDON ) {
 298                 rc = SLAPD_ABANDON;
 299                 goto clean2;
 300         }
 301
 302         if ( op->o_callback ) {
 303                 int             first = 1;
 304                 slap_callback   *sc = op->o_callback,
 305                                 *sc_next = op->o_callback;
 306
 307                 rc = SLAP_CB_CONTINUE;
 308                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
 309                         sc_next = op->o_callback->sc_next;
 310                         if ( op->o_callback->sc_response ) {
 311                                 rc = op->o_callback->sc_response( op, rs );
 312                                 if ( first && op->o_callback == NULL ) {
 313                                         sc = NULL;
 314                                 }
 315                                 if ( rc != SLAP_CB_CONTINUE ) break;
 316                         }
 317                         first = 0;
 318                 }
 319
 320                 op->o_callback = sc;
 321                 if ( rc != SLAP_CB_CONTINUE ) goto clean2;
 322         }
 323
 324 #ifdef LDAP_CONNECTIONLESS
 325         if (op->o_conn && op->o_conn->c_is_udp)
 326                 ber = op->o_res_ber;
 327         else
 328 #endif
 329         {
 330                 ber_init_w_nullc( ber, LBER_USE_DER );
 331                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 332         }
 333
 334         Debug( LDAP_DEBUG_TRACE,
 335                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 336                 rs->sr_msgid, rs->sr_tag, rs->sr_err );
 337
 338         if( rs->sr_ref ) {
 339                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 340                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 341                         NULL, NULL );
 342         }
 343
 344 #ifdef LDAP_CONNECTIONLESS
 345         if (op->o_conn && op->o_conn->c_is_udp &&
 346                 op->o_protocol == LDAP_VERSION2 )
 347         {
 348                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 349                         rs->sr_tag, rs->sr_err,
 350                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 351                 rs->sr_text == NULL ? "" : rs->sr_text );
 352         } else
 353 #endif
 354         if ( rs->sr_type == REP_INTERMEDIATE ) {
 355             rc = ber_printf( ber, "{it{" /*"}}"*/,
 356                         rs->sr_msgid, rs->sr_tag );
 357
 358         } else {
 359             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 360                 rs->sr_msgid, rs->sr_tag, rs->sr_err,
 361                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 362                 rs->sr_text == NULL ? "" : rs->sr_text );
 363         }
 364
 365         if( rc != -1 ) {
 366                 if ( rs->sr_ref != NULL ) {
 367                         assert( rs->sr_err == LDAP_REFERRAL );
 368                         rc = ber_printf( ber, "t{W}",
 369                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 370                 } else {
 371                         assert( rs->sr_err != LDAP_REFERRAL );
 372                 }
 373         }
 374
 375         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 376                 rc = ber_printf( ber, "tO",
 377                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 378         }
 379
 380         if( rc != -1 &&
 381                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 382         {
 383                 if ( rs->sr_rspoid != NULL ) {
 384                         rc = ber_printf( ber, "ts",
 385                                 rs->sr_type == REP_EXTENDED
 386                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 387                                 rs->sr_rspoid );
 388                 }
 389                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 390                         rc = ber_printf( ber, "tO",
 391                                 rs->sr_type == REP_EXTENDED
 392                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 393                                 rs->sr_rspdata );
 394                 }
 395         }
 396
 397         if( rc != -1 ) {
 398                 rc = ber_printf( ber, /*"{"*/ "N}" );
 399         }
 400
 401         if( rc != -1 ) {
 402                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 403         }
 404
 405         if( rc != -1 ) {
 406                 rc = ber_printf( ber, /*"{"*/ "N}" );
 407         }
 408
 409 #ifdef LDAP_CONNECTIONLESS
 410         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 411                 && rc != -1 )
 412         {
 413                 rc = ber_printf( ber, /*"{"*/ "N}" );
 414         }
 415 #endif
 416
 417         if ( rc == -1 ) {
 418                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 419
 420 #ifdef LDAP_CONNECTIONLESS
 421                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 422 #endif
 423                 {
 424                         ber_free_buf( ber );
 425                 }
 426                 goto cleanup;
 427         }
 428
 429         /* send BER */
 430         bytes = send_ldap_ber( op->o_conn, ber );
 431 #ifdef LDAP_CONNECTIONLESS
 432         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 433 #endif
 434         {
 435                 ber_free_buf( ber );
 436         }
 437
 438         if ( bytes < 0 ) {
 439                 Debug( LDAP_DEBUG_ANY,
 440                         "send_ldap_response: ber write failed\n",
 441                         0, 0, 0 );
 442
 443                 goto cleanup;
 444         }
 445
 446         ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
 447         ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
 448         ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
 449         ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
 450
 451 cleanup:;
 452         /* Tell caller that we did this for real, as opposed to being
 453          * overridden by a callback
 454          */
 455         rc = SLAP_CB_CONTINUE;
 456
 457 clean2:;
 458         if ( op->o_callback ) {
 459                 int             first = 1;
 460                 slap_callback   *sc = op->o_callback, *sc_next;
 461
 462                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
 463                         sc_next = op->o_callback->sc_next;
 464                         if ( op->o_callback->sc_cleanup ) {
 465                                 (void)op->o_callback->sc_cleanup( op, rs );
 466                                 if ( first && op->o_callback != sc ) {
 467                                         sc = op->o_callback;
 468                                 }
 469                         }
 470                         first = 0;
 471                 }
 472                 op->o_callback = sc;
 473         }
 474
 475
 476         if ( rs->sr_matched && rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 477                 free( (char *)rs->sr_matched );
 478                 rs->sr_matched = NULL;
 479         }
 480
 481         if ( rs->sr_ref && rs->sr_flags & REP_REF_MUSTBEFREED ) {
 482                 ber_bvarray_free( rs->sr_ref );
 483                 rs->sr_ref = NULL;
 484         }
 485
 486         return rc;
 487 }
 488
 489
 490 void
 491 send_ldap_disconnect( Operation *op, SlapReply *rs )
 492 {
 493 #define LDAP_UNSOLICITED_ERROR(e) \
 494         (  (e) == LDAP_PROTOCOL_ERROR \
 495         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 496         || (e) == LDAP_UNAVAILABLE )
 497
 498         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 499
 500         rs->sr_type = REP_EXTENDED;
 501
 502         Debug( LDAP_DEBUG_TRACE,
 503                 "send_ldap_disconnect %d:%s\n",
 504                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 505
 506         if ( op->o_protocol < LDAP_VERSION3 ) {
 507                 rs->sr_rspoid = NULL;
 508                 rs->sr_tag = req2res( op->o_tag );
 509                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 510
 511         } else {
 512                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 513                 rs->sr_tag = LDAP_RES_EXTENDED;
 514                 rs->sr_msgid = 0;
 515         }
 516
 517         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 518                 Statslog( LDAP_DEBUG_STATS,
 519                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 520                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 521                         rs->sr_text ? rs->sr_text : "", 0 );
 522         }
 523 }
 524
 525 void
 526 slap_send_ldap_result( Operation *op, SlapReply *rs )
 527 {
 528         char *tmp = NULL;
 529         const char *otext = rs->sr_text;
 530         BerVarray oref = rs->sr_ref;
 531
 532         rs->sr_type = REP_RESULT;
 533
 534         /* Propagate Abandons so that cleanup callbacks can be processed */
 535         if ( rs->sr_err == SLAPD_ABANDON )
 536                 goto abandon;
 537
 538         assert( !LDAP_API_ERROR( rs->sr_err ) );
 539
 540         Debug( LDAP_DEBUG_TRACE,
 541                 "send_ldap_result: %s p=%d\n",
 542                 op->o_log_prefix, op->o_protocol, 0 );
 543
 544         Debug( LDAP_DEBUG_ARGS,
 545                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 546                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 547                 rs->sr_text ? rs->sr_text : "" );
 548
 549
 550         if( rs->sr_ref ) {
 551                 Debug( LDAP_DEBUG_ARGS,
 552                         "send_ldap_result: referral=\"%s\"\n",
 553                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 554                         NULL, NULL );
 555         }
 556
 557         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 558
 559         if ( rs->sr_err == LDAP_REFERRAL ) {
 560 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 561                 if( op->o_domain_scope ) {
 562                         rs->sr_ref = NULL;
 563                 }
 564 #endif
 565                 if( rs->sr_ref == NULL ) {
 566                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 567                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 568                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 569                 }
 570         }
 571
 572         if ( op->o_protocol < LDAP_VERSION3 ) {
 573                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 574                 rs->sr_text = tmp;
 575                 rs->sr_ref = NULL;
 576         }
 577
 578         rs->sr_tag = req2res( op->o_tag );
 579         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 580
 581 abandon:
 582         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 583                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 584                         char nbuf[64];
 585                         snprintf( nbuf, sizeof nbuf, "%d nentries=%d",
 586                                 rs->sr_err, rs->sr_nentries );
 587
 588                         Statslog( LDAP_DEBUG_STATS,
 589                         "%s SEARCH RESULT tag=%lu err=%s text=%s\n",
 590                                 op->o_log_prefix, rs->sr_tag, nbuf,
 591                                 rs->sr_text ? rs->sr_text : "", 0 );
 592                 } else {
 593                         Statslog( LDAP_DEBUG_STATS,
 594                                 "%s RESULT tag=%lu err=%d text=%s\n",
 595                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 596                                 rs->sr_text ? rs->sr_text : "", 0 );
 597                 }
 598         }
 599
 600         if( tmp != NULL ) ch_free(tmp);
 601         rs->sr_text = otext;
 602         rs->sr_ref = oref;
 603 }
 604
 605 void
 606 send_ldap_sasl( Operation *op, SlapReply *rs )
 607 {
 608         rs->sr_type = REP_SASL;
 609         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 610                 rs->sr_err,
 611                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 612
 613         rs->sr_tag = req2res( op->o_tag );
 614         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 615
 616         send_ldap_response( op, rs );
 617 }
 618
 619 void
 620 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 621 {
 622         rs->sr_type = REP_EXTENDED;
 623
 624         Debug( LDAP_DEBUG_TRACE,
 625                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 626                 rs->sr_err,
 627                 rs->sr_rspoid ? rs->sr_rspoid : "",
 628                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 629
 630         rs->sr_tag = req2res( op->o_tag );
 631         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 632
 633         send_ldap_response( op, rs );
 634 }
 635
 636 void
 637 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 638 {
 639         rs->sr_type = REP_INTERMEDIATE;
 640         Debug( LDAP_DEBUG_TRACE,
 641                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 642                 rs->sr_err,
 643                 rs->sr_rspoid ? rs->sr_rspoid : "",
 644                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 645         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 646         rs->sr_msgid = op->o_msgid;
 647         send_ldap_response( op, rs );
 648 }
 649
 650 int
 651 slap_send_search_entry( Operation *op, SlapReply *rs )
 652 {
 653         BerElementBuffer berbuf;
 654         BerElement      *ber = (BerElement *) &berbuf;
 655         Attribute       *a;
 656         int             i, j, rc=-1, bytes;
 657         char            *edn;
 658         int             userattrs;
 659         AccessControlState acl_state = ACL_STATE_INIT;
 660         int                      attrsonly;
 661         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 662
 663         /* a_flags: array of flags telling if the i-th element will be
 664          *          returned or filtered out
 665          * e_flags: array of a_flags
 666          */
 667         char **e_flags = NULL;
 668
 669         rs->sr_type = REP_SEARCH;
 670
 671         /* eventually will loop through generated operational attribute types
 672          * currently implemented types include:
 673          *      entryDN, subschemaSubentry, and hasSubordinates */
 674         /* NOTE: moved before overlays callback circling because
 675          * they may modify entry and other stuff in rs */
 676         /* check for special all operational attributes ("+") type */
 677         /* FIXME: maybe we could se this flag at the operation level;
 678          * however, in principle the caller of send_search_entry() may
 679          * change the attribute list at each call */
 680         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 681
 682         rc = backend_operational( op, rs );
 683         if ( rc ) {
 684                 goto error_return;
 685         }
 686
 687         if ( op->o_callback ) {
 688                 int             first = 1;
 689                 slap_callback   *sc = op->o_callback,
 690                                 *sc_next = op->o_callback;
 691
 692                 rc = SLAP_CB_CONTINUE;
 693                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next )
 694                 {
 695                         sc_next = op->o_callback->sc_next;
 696                         if ( op->o_callback->sc_response ) {
 697                                 rc = op->o_callback->sc_response( op, rs );
 698                                 if ( first && op->o_callback == NULL ) {
 699                                         sc = NULL;
 700                                 }
 701                                 if ( rc != SLAP_CB_CONTINUE ) break;
 702                         }
 703                         first = 0;
 704                 }
 705
 706                 op->o_callback = sc;
 707                 if ( rc != SLAP_CB_CONTINUE ) goto error_return;
 708         }
 709
 710         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 711                 op->o_connid, rs->sr_entry->e_name.bv_val,
 712                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 713
 714         attrsonly = op->ors_attrsonly;
 715
 716         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 717                 Debug( LDAP_DEBUG_ACL,
 718                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 719                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 720
 721                 rc = 1;
 722                 goto error_return;
 723         }
 724
 725         edn = rs->sr_entry->e_nname.bv_val;
 726
 727         if ( op->o_res_ber ) {
 728                 /* read back control or LDAP_CONNECTIONLESS */
 729             ber = op->o_res_ber;
 730         } else {
 731                 struct berval   bv;
 732
 733                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 734                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 735
 736                 ber_init2( ber, &bv, LBER_USE_DER );
 737                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 738         }
 739
 740 #ifdef LDAP_CONNECTIONLESS
 741         if ( op->o_conn && op->o_conn->c_is_udp ) {
 742                 /* CONNECTIONLESS */
 743                 if ( op->o_protocol == LDAP_VERSION2 ) {
 744                 rc = ber_printf(ber, "t{O{" /*}}*/,
 745                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 746                 } else {
 747                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 748                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 749                 }
 750         } else
 751 #endif
 752         if ( op->o_res_ber ) {
 753                 /* read back control */
 754             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 755         } else {
 756             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 757                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 758         }
 759
 760         if ( rc == -1 ) {
 761                 Debug( LDAP_DEBUG_ANY,
 762                         "send_search_entry: conn %lu  ber_printf failed\n",
 763                         op->o_connid, 0, 0 );
 764
 765                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 766                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 767                 goto error_return;
 768         }
 769
 770         /* check for special all user attributes ("*") type */
 771         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 772
 773         /* create an array of arrays of flags. Each flag corresponds
 774          * to particular value of attribute and equals 1 if value matches
 775          * to ValuesReturnFilter or 0 if not
 776          */
 777         if ( op->o_vrFilter != NULL ) {
 778                 int     k = 0;
 779                 size_t  size;
 780
 781                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 782                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 783                 }
 784
 785                 size = i * sizeof(char *) + k;
 786                 if ( size > 0 ) {
 787                         char    *a_flags;
 788                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 789                         if( e_flags == NULL ) {
 790                         Debug( LDAP_DEBUG_ANY,
 791                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 792                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 793                                 ber_free( ber, 1 );
 794
 795                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 796                                 goto error_return;
 797                         }
 798                         a_flags = (char *)(e_flags + i);
 799                         memset( a_flags, 0, k );
 800                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 801                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 802                                 e_flags[i] = a_flags;
 803                                 a_flags += j;
 804                         }
 805
 806                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 807                         if ( rc == -1 ) {
 808                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 809                                         "conn %lu matched values filtering failed\n",
 810                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 811                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 812                                 send_ldap_error( op, rs, LDAP_OTHER,
 813                                         "matched values filtering error" );
 814                                 goto error_return;
 815                         }
 816                 }
 817         }
 818
 819         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 820                 AttributeDescription *desc = a->a_desc;
 821                 int finish = 0;
 822
 823                 if ( rs->sr_attrs == NULL ) {
 824                         /* all attrs request, skip operational attributes */
 825                         if( is_at_operational( desc->ad_type ) ) {
 826                                 continue;
 827                         }
 828
 829                 } else {
 830                         /* specific attrs requested */
 831                         if ( is_at_operational( desc->ad_type ) ) {
 832                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
 833                                                 !ad_inlist( desc, rs->sr_attrs ) )
 834                                 {
 835                                         continue;
 836                                 }
 837
 838                         } else {
 839                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) )
 840                                 {
 841                                         continue;
 842                                 }
 843                         }
 844                 }
 845
 846                 if ( attrsonly ) {
 847                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 848                                 ACL_READ, &acl_state ) )
 849                         {
 850                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 851                                         "conn %lu access to attribute %s not allowed\n",
 852                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 853                                 continue;
 854                         }
 855
 856                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 857                                 Debug( LDAP_DEBUG_ANY,
 858                                         "send_search_entry: conn %lu  ber_printf failed\n",
 859                                         op->o_connid, 0, 0 );
 860
 861                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 862                                 send_ldap_error( op, rs, LDAP_OTHER,
 863                                         "encoding description error");
 864                                 goto error_return;
 865                         }
 866                         finish = 1;
 867
 868                 } else {
 869                         int first = 1;
 870                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
 871                                 if ( ! access_allowed( op, rs->sr_entry,
 872                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
 873                                 {
 874                                         Debug( LDAP_DEBUG_ACL,
 875                                                 "send_search_entry: conn %lu "
 876                                                 "access to attribute %s, value #%d not allowed\n",
 877                                                 op->o_connid, desc->ad_cname.bv_val, i );
 878
 879                                         continue;
 880                                 }
 881
 882                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
 883                                         continue;
 884                                 }
 885
 886                                 if ( first ) {
 887                                         first = 0;
 888                                         finish = 1;
 889                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 890                                                 Debug( LDAP_DEBUG_ANY,
 891                                                         "send_search_entry: conn %lu  ber_printf failed\n",
 892                                                         op->o_connid, 0, 0 );
 893
 894                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 895                                                 send_ldap_error( op, rs, LDAP_OTHER,
 896                                                         "encoding description error");
 897                                                 goto error_return;
 898                                         }
 899                                 }
 900                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
 901                                         Debug( LDAP_DEBUG_ANY,
 902                                                 "send_search_entry: conn %lu  "
 903                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
 904
 905                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 906                                         send_ldap_error( op, rs, LDAP_OTHER,
 907                                                 "encoding values error" );
 908                                         goto error_return;
 909                                 }
 910                         }
 911                 }
 912
 913                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -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, "encode end error" );
 920                         goto error_return;
 921                 }
 922         }
 923
 924         /* NOTE: moved before overlays callback circling because
 925          * they may modify entry and other stuff in rs */
 926         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
 927                 int     k = 0;
 928                 size_t  size;
 929
 930                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 931                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 932                 }
 933
 934                 size = i * sizeof(char *) + k;
 935                 if ( size > 0 ) {
 936                         char    *a_flags, **tmp;
 937
 938                         /*
 939                          * Reuse previous memory - we likely need less space
 940                          * for operational attributes
 941                          */
 942                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
 943                                 op->o_tmpmemctx );
 944                         if ( tmp == NULL ) {
 945                                 Debug( LDAP_DEBUG_ANY,
 946                                         "send_search_entry: conn %lu "
 947                                         "not enough memory "
 948                                         "for matched values filtering\n",
 949                                         op->o_connid, 0, 0 );
 950                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 951                                 send_ldap_error( op, rs, LDAP_OTHER,
 952                                         "not enough memory for matched values filtering" );
 953                                 goto error_return;
 954                         }
 955                         e_flags = tmp;
 956                         a_flags = (char *)(e_flags + i);
 957                         memset( a_flags, 0, k );
 958                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 959                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 960                                 e_flags[i] = a_flags;
 961                                 a_flags += j;
 962                         }
 963                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
 964
 965                         if ( rc == -1 ) {
 966                                 Debug( LDAP_DEBUG_ANY,
 967                                         "send_search_entry: conn %lu "
 968                                         "matched values filtering failed\n",
 969                                         op->o_connid ? op->o_connid : 0, 0, 0);
 970                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 971                                 send_ldap_error( op, rs, LDAP_OTHER,
 972                                         "matched values filtering error" );
 973                                 goto error_return;
 974                         }
 975                 }
 976         }
 977
 978         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
 979                 AttributeDescription *desc = a->a_desc;
 980
 981                 if ( rs->sr_attrs == NULL ) {
 982                         /* all attrs request, skip operational attributes */
 983                         if( is_at_operational( desc->ad_type ) ) {
 984                                 continue;
 985                         }
 986
 987                 } else {
 988                         /* specific attrs requested */
 989                         if( is_at_operational( desc->ad_type ) ) {
 990                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
 991                                                 !ad_inlist( desc, rs->sr_attrs ) )
 992                                 {
 993                                         continue;
 994                                 }
 995                         } else {
 996                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 997                                         continue;
 998                                 }
 999                         }
1000                 }
1001
1002                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1003                         ACL_READ, &acl_state ) )
1004                 {
1005                         Debug( LDAP_DEBUG_ACL,
1006                                 "send_search_entry: conn %lu "
1007                                 "access to attribute %s not allowed\n",
1008                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1009
1010                         continue;
1011                 }
1012
1013                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1014                 if ( rc == -1 ) {
1015                         Debug( LDAP_DEBUG_ANY,
1016                                 "send_search_entry: conn %lu  "
1017                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1018
1019                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1020                         send_ldap_error( op, rs, LDAP_OTHER,
1021                                 "encoding description error" );
1022                         goto error_return;
1023                 }
1024
1025                 if ( ! attrsonly ) {
1026                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1027                                 if ( ! access_allowed( op, rs->sr_entry,
1028                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1029                                 {
1030                                         Debug( LDAP_DEBUG_ACL,
1031                                                 "send_search_entry: conn %lu "
1032                                                 "access to %s, value %d not allowed\n",
1033                                                 op->o_connid, desc->ad_cname.bv_val, i );
1034
1035                                         continue;
1036                                 }
1037
1038                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1039                                         continue;
1040                                 }
1041
1042                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1043                                         Debug( LDAP_DEBUG_ANY,
1044                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1045                                                 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 values error" );
1050                                         goto error_return;
1051                                 }
1052                         }
1053                 }
1054
1055                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1056                         Debug( LDAP_DEBUG_ANY,
1057                                 "send_search_entry: conn %lu  ber_printf failed\n",
1058                                 op->o_connid, 0, 0 );
1059
1060                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1061                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1062                         goto error_return;
1063                 }
1064         }
1065
1066         /* free e_flags */
1067         if ( e_flags ) {
1068                 slap_sl_free( e_flags, op->o_tmpmemctx );
1069                 e_flags = NULL;
1070         }
1071
1072         rc = ber_printf( ber, /*{{*/ "}N}" );
1073
1074         if( rc != -1 ) {
1075                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1076         }
1077
1078         if( rc != -1 ) {
1079 #ifdef LDAP_CONNECTIONLESS
1080                 if( op->o_conn && op->o_conn->c_is_udp ) {
1081                         if ( op->o_protocol != LDAP_VERSION2 ) {
1082                                 rc = ber_printf( ber, /*{*/ "N}" );
1083                         }
1084                 } else
1085 #endif
1086                 if ( op->o_res_ber == NULL ) {
1087                         rc = ber_printf( ber, /*{*/ "N}" );
1088                 }
1089         }
1090
1091         if ( rc == -1 ) {
1092                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1093
1094                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1095                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1096                 rc = 1;
1097                 goto error_return;
1098         }
1099
1100         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1101                 be_entry_release_rw( op, rs->sr_entry, 0 );
1102                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1103                 rs->sr_entry = NULL;
1104         }
1105
1106         if ( op->o_res_ber == NULL ) {
1107                 bytes = send_ldap_ber( op->o_conn, ber );
1108                 ber_free_buf( ber );
1109
1110                 if ( bytes < 0 ) {
1111                         Debug( LDAP_DEBUG_ANY,
1112                                 "send_search_entry: conn %lu  ber write failed.\n",
1113                                 op->o_connid, 0, 0 );
1114
1115                         rc = -1;
1116                         goto error_return;
1117                 }
1118                 rs->sr_nentries++;
1119
1120                 ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
1121                 ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1122                 ldap_pvt_mp_add_ulong( slap_counters.sc_entries, 1 );
1123                 ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1124                 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
1125         }
1126
1127         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1128             op->o_log_prefix, edn, 0, 0, 0 );
1129
1130         Debug( LDAP_DEBUG_TRACE,
1131                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1132
1133         rc = 0;
1134
1135 error_return:;
1136         if ( op->o_callback ) {
1137                 int             first = 1;
1138                 slap_callback   *sc = op->o_callback, *sc_next;
1139
1140                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1141                         sc_next = op->o_callback->sc_next;
1142                         if ( op->o_callback->sc_cleanup ) {
1143                                 (void)op->o_callback->sc_cleanup( op, rs );
1144                                 if ( first && op->o_callback != sc ) {
1145                                         sc = op->o_callback;
1146                                 }
1147                         }
1148                         first = 0;
1149                 }
1150                 op->o_callback = sc;
1151         }
1152
1153         if ( e_flags ) {
1154                 slap_sl_free( e_flags, op->o_tmpmemctx );
1155         }
1156
1157         if ( rs->sr_operational_attrs ) {
1158                 attrs_free( rs->sr_operational_attrs );
1159                 rs->sr_operational_attrs = NULL;
1160         }
1161         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1162
1163         /* FIXME: I think rs->sr_type should be explicitly set to
1164          * REP_SEARCH here. That's what it was when we entered this
1165          * function. send_ldap_error may have changed it, but we
1166          * should set it back so that the cleanup functions know
1167          * what they're doing.
1168          */
1169         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1170                 && rs->sr_entry
1171                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1172         {
1173                 entry_free( rs->sr_entry );
1174                 rs->sr_entry = NULL;
1175                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1176         }
1177
1178         return( rc );
1179 }
1180
1181 int
1182 slap_send_search_reference( Operation *op, SlapReply *rs )
1183 {
1184         BerElementBuffer berbuf;
1185         BerElement      *ber = (BerElement *) &berbuf;
1186         int rc = 0;
1187         int bytes;
1188
1189         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1190         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1191
1192         rs->sr_type = REP_SEARCHREF;
1193         if ( op->o_callback ) {
1194                 int             first = 1;
1195                 slap_callback   *sc = op->o_callback,
1196                                 *sc_next = op->o_callback;
1197
1198                 rc = SLAP_CB_CONTINUE;
1199                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1200                         sc_next = op->o_callback->sc_next;
1201                         if ( op->o_callback->sc_response ) {
1202                                 rc = op->o_callback->sc_response( op, rs );
1203                                 if ( first && op->o_callback == NULL ) {
1204                                         sc = NULL;
1205                                 }
1206                                 if ( rc != SLAP_CB_CONTINUE ) break;
1207                         }
1208                         first = 0;
1209                 }
1210
1211                 op->o_callback = sc;
1212                 if ( rc != SLAP_CB_CONTINUE ) goto rel;
1213         }
1214
1215         Debug( LDAP_DEBUG_TRACE,
1216                 "=> send_search_reference: dn=\"%s\"\n",
1217                 rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)", 0, 0 );
1218
1219         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1220                 ad_entry, NULL, ACL_READ, NULL ) )
1221         {
1222                 Debug( LDAP_DEBUG_ACL,
1223                         "send_search_reference: access to entry not allowed\n",
1224                     0, 0, 0 );
1225                 rc = 1;
1226                 goto rel;
1227         }
1228
1229         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1230                 ad_ref, NULL, ACL_READ, NULL ) )
1231         {
1232                 Debug( LDAP_DEBUG_ACL,
1233                         "send_search_reference: access "
1234                         "to reference not allowed\n",
1235                     0, 0, 0 );
1236                 rc = 1;
1237                 goto rel;
1238         }
1239
1240 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1241         if( op->o_domain_scope ) {
1242                 Debug( LDAP_DEBUG_ANY,
1243                         "send_search_reference: domainScope control in (%s)\n",
1244                         rs->sr_entry->e_dn, 0, 0 );
1245                 rc = 0;
1246                 goto rel;
1247         }
1248 #endif
1249
1250         if( rs->sr_ref == NULL ) {
1251                 Debug( LDAP_DEBUG_ANY,
1252                         "send_search_reference: null ref in (%s)\n",
1253                         rs->sr_entry ? rs->sr_entry->e_dn : "(null)", 0, 0 );
1254                 rc = 1;
1255                 goto rel;
1256         }
1257
1258         if( op->o_protocol < LDAP_VERSION3 ) {
1259                 rc = 0;
1260                 /* save the references for the result */
1261                 if( rs->sr_ref[0].bv_val != NULL ) {
1262                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1263                                 rc = LDAP_OTHER;
1264                 }
1265                 goto rel;
1266         }
1267
1268 #ifdef LDAP_CONNECTIONLESS
1269         if( op->o_conn && op->o_conn->c_is_udp ) {
1270                 ber = op->o_res_ber;
1271         } else
1272 #endif
1273         {
1274                 ber_init_w_nullc( ber, LBER_USE_DER );
1275                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1276         }
1277
1278         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1279                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1280
1281         if( rc != -1 ) {
1282                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1283         }
1284
1285         if( rc != -1 ) {
1286                 rc = ber_printf( ber, /*"{"*/ "N}" );
1287         }
1288
1289         if ( rc == -1 ) {
1290                 Debug( LDAP_DEBUG_ANY,
1291                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1292
1293 #ifdef LDAP_CONNECTIONLESS
1294                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1295 #endif
1296                 ber_free_buf( ber );
1297                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1298                 goto rel;
1299         }
1300
1301         rc = 0;
1302         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1303                 be_entry_release_rw( op, rs->sr_entry, 0 );
1304                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1305                 rs->sr_entry = NULL;
1306         }
1307
1308 #ifdef LDAP_CONNECTIONLESS
1309         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1310 #endif
1311         bytes = send_ldap_ber( op->o_conn, ber );
1312         ber_free_buf( ber );
1313
1314         ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
1315         ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1316         ldap_pvt_mp_add_ulong( slap_counters.sc_refs, 1 );
1317         ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1318         ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
1319 #ifdef LDAP_CONNECTIONLESS
1320         }
1321 #endif
1322
1323         Statslog( LDAP_DEBUG_STATS2, "%s REF dn=\"%s\"\n",
1324                 op->o_log_prefix, rs->sr_entry ? rs->sr_entry->e_dn : "(null)",
1325                 0, 0, 0 );
1326
1327         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1328
1329 rel:
1330         if ( op->o_callback ) {
1331                 int             first = 1;
1332                 slap_callback   *sc = op->o_callback, *sc_next;
1333
1334                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1335                         sc_next = op->o_callback->sc_next;
1336                         if ( op->o_callback->sc_cleanup ) {
1337                                 (void)op->o_callback->sc_cleanup( op, rs );
1338                                 if ( first && op->o_callback != sc ) {
1339                                         sc = op->o_callback;
1340                                 }
1341                         }
1342                         first = 0;
1343                 }
1344                 op->o_callback = sc;
1345         }
1346
1347         return rc;
1348 }
1349
1350 int
1351 str2result(
1352     char        *s,
1353     int         *code,
1354     char        **matched,
1355     char        **info )
1356 {
1357         int     rc;
1358         char    *c;
1359
1360         *code = LDAP_SUCCESS;
1361         *matched = NULL;
1362         *info = NULL;
1363
1364         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1365                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1366                     s, 0, 0 );
1367
1368                 return( -1 );
1369         }
1370
1371         rc = 0;
1372         while ( (s = strchr( s, '\n' )) != NULL ) {
1373                 *s++ = '\0';
1374                 if ( *s == '\0' ) {
1375                         break;
1376                 }
1377                 if ( (c = strchr( s, ':' )) != NULL ) {
1378                         c++;
1379                 }
1380
1381                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1382                         if ( c != NULL ) {
1383                                 *code = atoi( c );
1384                         }
1385                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1386                         if ( c != NULL ) {
1387                                 *matched = c;
1388                         }
1389                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1390                         if ( c != NULL ) {
1391                                 *info = c;
1392                         }
1393                 } else {
1394                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1395                             s, 0, 0 );
1396
1397                         rc = -1;
1398                 }
1399         }
1400
1401         return( rc );
1402 }
1403
1404 int slap_read_controls(
1405         Operation *op,
1406         SlapReply *rs,
1407         Entry *e,
1408         const struct berval *oid,
1409         LDAPControl **ctrl )
1410 {
1411         int rc;
1412         struct berval bv;
1413         BerElementBuffer berbuf;
1414         BerElement *ber = (BerElement *) &berbuf;
1415         LDAPControl c;
1416         Operation myop;
1417
1418         Debug( LDAP_DEBUG_ANY, "slap_read_controls: (%s) %s\n",
1419                 oid->bv_val, e->e_dn, 0 );
1420
1421         rs->sr_entry = e;
1422         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1423                 op->o_preread_attrs : op->o_postread_attrs;
1424
1425         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1426         bv.bv_val = op->o_tmpalloc(bv.bv_len, op->o_tmpmemctx );
1427
1428         ber_init2( ber, &bv, LBER_USE_DER );
1429         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1430
1431         /* create new operation */
1432         myop = *op;
1433         myop.o_bd = NULL;
1434         myop.o_res_ber = ber;
1435         myop.o_callback = NULL;
1436
1437         rc = slap_send_search_entry( &myop, rs );
1438         if( rc ) return rc;
1439
1440         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1441
1442         if( rc == LBER_ERROR ) return LDAP_OTHER;
1443
1444         c.ldctl_oid = oid->bv_val;
1445         c.ldctl_iscritical = 0;
1446
1447         if ( *ctrl == NULL ) {
1448                 /* first try */
1449                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1450         } else {
1451                 /* retry: free previous try */
1452                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1453         }
1454
1455         **ctrl = c;
1456         return LDAP_SUCCESS;
1457 }
1458
1459 /* Map API errors to protocol errors... */
1460 int
1461 slap_map_api2result( SlapReply *rs )
1462 {
1463         switch(rs->sr_err) {
1464         case LDAP_SERVER_DOWN:
1465                 return LDAP_UNAVAILABLE;
1466         case LDAP_LOCAL_ERROR:
1467                 return LDAP_OTHER;
1468         case LDAP_ENCODING_ERROR:
1469         case LDAP_DECODING_ERROR:
1470                 return LDAP_PROTOCOL_ERROR;
1471         case LDAP_TIMEOUT:
1472                 return LDAP_UNAVAILABLE;
1473         case LDAP_AUTH_UNKNOWN:
1474                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1475         case LDAP_FILTER_ERROR:
1476                 rs->sr_text = "Filter error";
1477                 return LDAP_OTHER;
1478         case LDAP_USER_CANCELLED:
1479                 rs->sr_text = "User cancelled";
1480                 return LDAP_OTHER;
1481         case LDAP_PARAM_ERROR:
1482                 return LDAP_PROTOCOL_ERROR;
1483         case LDAP_NO_MEMORY:
1484                 return LDAP_OTHER;
1485         case LDAP_CONNECT_ERROR:
1486                 return LDAP_UNAVAILABLE;
1487         case LDAP_NOT_SUPPORTED:
1488                 return LDAP_UNWILLING_TO_PERFORM;
1489         case LDAP_CONTROL_NOT_FOUND:
1490                 return LDAP_PROTOCOL_ERROR;
1491         case LDAP_NO_RESULTS_RETURNED:
1492                 return LDAP_NO_SUCH_OBJECT;
1493         case LDAP_MORE_RESULTS_TO_RETURN:
1494                 rs->sr_text = "More results to return";
1495                 return LDAP_OTHER;
1496         case LDAP_CLIENT_LOOP:
1497         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1498                 return LDAP_LOOP_DETECT;
1499         default:
1500                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1501                 return rs->sr_err;
1502         }
1503 }
1504
1505
1506 slap_mask_t
1507 slap_attr_flags( AttributeName *an )
1508 {
1509         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1510
1511         if ( an == NULL ) {
1512                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1513
1514         } else {
1515                 flags |= an_find( an, &AllOper )
1516                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1517                 flags |= an_find( an, &AllUser )
1518                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1519         }
1520
1521         return flags;
1522 }
1523