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 #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 = SLAP_MALLOC( len+i+sizeof("Referral:") );
  87         if( v2 == NULL ) {
  88                 Debug( LDAP_DEBUG_ANY, "v2ref: SLAP_MALLOC failed", 0, 0, 0 );
  89                 return NULL;
  90         }
  91
  92         if( text != NULL ) {
  93                 strcpy(v2, text);
  94                 if( i ) {
  95                         v2[len++] = '\n';
  96                 }
  97         }
  98         strcpy( v2+len, "Referral:" );
  99         len += sizeof("Referral:");
 100
 101         for( i=0; ref[i].bv_val != NULL; i++ ) {
 102                 v2 = SLAP_REALLOC( v2, len + ref[i].bv_len + 1 );
 103                 if( v2 == NULL ) {
 104                         Debug( LDAP_DEBUG_ANY, "v2ref: SLAP_MALLOC failed", 0, 0, 0 );
 105                         return NULL;
 106                 }
 107                 v2[len-1] = '\n';
 108                 AC_MEMCPY(&v2[len], ref[i].bv_val, ref[i].bv_len );
 109                 len += ref[i].bv_len;
 110                 if (ref[i].bv_val[ref[i].bv_len-1] != '/') {
 111                         ++len;
 112                 }
 113         }
 114
 115         v2[len-1] = '\0';
 116         return v2;
 117 }
 118
 119 ber_tag_t
 120 slap_req2res( ber_tag_t tag )
 121 {
 122         switch( tag ) {
 123         case LDAP_REQ_ADD:
 124         case LDAP_REQ_BIND:
 125         case LDAP_REQ_COMPARE:
 126         case LDAP_REQ_EXTENDED:
 127         case LDAP_REQ_MODIFY:
 128         case LDAP_REQ_MODRDN:
 129                 tag++;
 130                 break;
 131
 132         case LDAP_REQ_DELETE:
 133                 tag = LDAP_RES_DELETE;
 134                 break;
 135
 136         case LDAP_REQ_ABANDON:
 137         case LDAP_REQ_UNBIND:
 138                 tag = LBER_SEQUENCE;
 139                 break;
 140
 141         case LDAP_REQ_SEARCH:
 142                 tag = LDAP_RES_SEARCH_RESULT;
 143                 break;
 144
 145         default:
 146                 tag = LBER_SEQUENCE;
 147         }
 148
 149         return tag;
 150 }
 151
 152 static long send_ldap_ber(
 153         Connection *conn,
 154         BerElement *ber )
 155 {
 156         ber_len_t bytes;
 157
 158         ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
 159
 160         /* write only one pdu at a time - wait til it's our turn */
 161         ldap_pvt_thread_mutex_lock( &conn->c_write_mutex );
 162
 163         /* lock the connection */
 164         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 165
 166         /* write the pdu */
 167         while( 1 ) {
 168                 int err;
 169                 ber_socket_t    sd;
 170
 171                 if ( connection_state_closing( conn ) ) {
 172                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 173                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 174
 175                         return 0;
 176                 }
 177
 178                 if ( ber_flush( conn->c_sb, ber, 0 ) == 0 ) {
 179                         break;
 180                 }
 181
 182                 err = errno;
 183
 184                 /*
 185                  * we got an error.  if it's ewouldblock, we need to
 186                  * wait on the socket being writable.  otherwise, figure
 187                  * it's a hard error and return.
 188                  */
 189
 190                 Debug( LDAP_DEBUG_CONNS, "ber_flush failed errno=%d reason=\"%s\"\n",
 191                     err, sock_errstr(err), 0 );
 192
 193                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 194                         connection_closing( conn, "connection lost on write" );
 195
 196                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 197                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 198
 199                         return( -1 );
 200                 }
 201
 202                 /* wait for socket to be write-ready */
 203                 conn->c_writewaiter = 1;
 204                 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
 205                 slapd_set_write( sd, 1 );
 206
 207                 ldap_pvt_thread_cond_wait( &conn->c_write_cv, &conn->c_mutex );
 208                 conn->c_writewaiter = 0;
 209         }
 210
 211         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 212         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 213
 214         return bytes;
 215 }
 216
 217 static int
 218 send_ldap_control( BerElement *ber, LDAPControl *c )
 219 {
 220         int rc;
 221
 222         assert( c != NULL );
 223
 224         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 225
 226         if( c->ldctl_iscritical ) {
 227                 rc = ber_printf( ber, "b",
 228                         (ber_int_t) c->ldctl_iscritical ) ;
 229                 if( rc == -1 ) return rc;
 230         }
 231
 232         if( c->ldctl_value.bv_val != NULL ) {
 233                 rc = ber_printf( ber, "O", &c->ldctl_value );
 234                 if( rc == -1 ) return rc;
 235         }
 236
 237         rc = ber_printf( ber, /*{*/"N}" );
 238         if( rc == -1 ) return rc;
 239
 240         return 0;
 241 }
 242
 243 static int
 244 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 245 {
 246         int rc;
 247
 248         if( c == NULL )
 249                 return 0;
 250
 251         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 252         if( rc == -1 ) return rc;
 253
 254         for( ; *c != NULL; c++) {
 255                 rc = send_ldap_control( ber, *c );
 256                 if( rc == -1 ) return rc;
 257         }
 258
 259 #ifdef LDAP_DEVEL
 260         /* this is a hack to avoid having to modify op->s_ctrls */
 261         if( o->o_sortedresults ) {
 262                 BerElementBuffer berbuf;
 263                 BerElement *sber = (BerElement *) &berbuf;
 264                 LDAPControl sorted;
 265                 BER_BVZERO( &sorted.ldctl_value );
 266                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 267                 sorted.ldctl_iscritical = 0;
 268
 269                 ber_init2( sber, NULL, LBER_USE_DER );
 270
 271                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 272
 273                 if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
 274                         return -1;
 275                 }
 276
 277                 (void) ber_free_buf( ber );
 278
 279                 rc = send_ldap_control( ber, &sorted );
 280                 if( rc == -1 ) return rc;
 281         }
 282 #endif
 283
 284         rc = ber_printf( ber, /*{*/"N}" );
 285
 286         return rc;
 287 }
 288
 289 static int
 290 send_ldap_response(
 291         Operation *op,
 292         SlapReply *rs )
 293 {
 294         BerElementBuffer berbuf;
 295         BerElement      *ber = (BerElement *) &berbuf;
 296         int             rc = LDAP_SUCCESS;
 297         long    bytes;
 298
 299         if ( rs->sr_err == SLAPD_ABANDON ) {
 300                 rc = SLAPD_ABANDON;
 301                 goto clean2;
 302         }
 303
 304         if ( op->o_callback ) {
 305                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
 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 ( op->o_callback != *sc_prev ) {
 313                                         *sc_prev = op->o_callback;
 314                                 }
 315                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
 316                         }
 317                         sc_prev = &op->o_callback->sc_next;
 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                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
 460
 461                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
 462                         sc_next = op->o_callback->sc_next;
 463                         if ( op->o_callback->sc_cleanup ) {
 464                                 (void)op->o_callback->sc_cleanup( op, rs );
 465                                 if ( op->o_callback != *sc_prev ) {
 466                                         *sc_prev = op->o_callback;
 467                                 }
 468                                 if ( !op->o_callback ) break;
 469                         }
 470                         sc_prev = &op->o_callback->sc_next;
 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 = slap_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 = slap_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 = slap_req2res( op->o_tag );
 614         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 615
 616         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 617                 Statslog( LDAP_DEBUG_STATS,
 618                         "%s RESULT tag=%lu err=%d text=%s\n",
 619                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 620                         rs->sr_text ? rs->sr_text : "", 0 );
 621         }
 622 }
 623
 624 void
 625 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 626 {
 627         rs->sr_type = REP_EXTENDED;
 628
 629         Debug( LDAP_DEBUG_TRACE,
 630                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 631                 rs->sr_err,
 632                 rs->sr_rspoid ? rs->sr_rspoid : "",
 633                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 634
 635         rs->sr_tag = slap_req2res( op->o_tag );
 636         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 637
 638         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 639                 Statslog( LDAP_DEBUG_STATS,
 640                         "%s RESULT oid=%s err=%d text=%s\n",
 641                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 642                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 643         }
 644 }
 645
 646 void
 647 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 648 {
 649         rs->sr_type = REP_INTERMEDIATE;
 650         Debug( LDAP_DEBUG_TRACE,
 651                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 652                 rs->sr_err,
 653                 rs->sr_rspoid ? rs->sr_rspoid : "",
 654                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 655         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 656         rs->sr_msgid = op->o_msgid;
 657         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 658                 Statslog( LDAP_DEBUG_STATS2,
 659                         "%s INTERM oid=%s\n",
 660                         op->o_log_prefix,
 661                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 662         }
 663 }
 664
 665 /*
 666  * returns:
 667  *
 668  * LDAP_SUCCESS                 entry sent
 669  * LDAP_OTHER                   entry not sent (other)
 670  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 671  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 672  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 673  */
 674
 675 int
 676 slap_send_search_entry( Operation *op, SlapReply *rs )
 677 {
 678         BerElementBuffer berbuf;
 679         BerElement      *ber = (BerElement *) &berbuf;
 680         Attribute       *a;
 681         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 682         char            *edn;
 683         int             userattrs;
 684         AccessControlState acl_state = ACL_STATE_INIT;
 685         int                      attrsonly;
 686         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 687
 688         /* a_flags: array of flags telling if the i-th element will be
 689          *          returned or filtered out
 690          * e_flags: array of a_flags
 691          */
 692         char **e_flags = NULL;
 693
 694         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 695                 return LDAP_SIZELIMIT_EXCEEDED;
 696         }
 697
 698         rs->sr_type = REP_SEARCH;
 699
 700         /* eventually will loop through generated operational attribute types
 701          * currently implemented types include:
 702          *      entryDN, subschemaSubentry, and hasSubordinates */
 703         /* NOTE: moved before overlays callback circling because
 704          * they may modify entry and other stuff in rs */
 705         /* check for special all operational attributes ("+") type */
 706         /* FIXME: maybe we could se this flag at the operation level;
 707          * however, in principle the caller of send_search_entry() may
 708          * change the attribute list at each call */
 709         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 710
 711         rc = backend_operational( op, rs );
 712         if ( rc ) {
 713                 goto error_return;
 714         }
 715
 716         if ( op->o_callback ) {
 717                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
 718
 719                 rc = SLAP_CB_CONTINUE;
 720                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next )
 721                 {
 722                         sc_next = op->o_callback->sc_next;
 723                         if ( op->o_callback->sc_response ) {
 724                                 rc = op->o_callback->sc_response( op, rs );
 725                                 if ( op->o_callback != *sc_prev ) {
 726                                         *sc_prev = op->o_callback;
 727                                 }
 728                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
 729                         }
 730                         sc_prev = &op->o_callback->sc_next;
 731                 }
 732
 733                 op->o_callback = sc;
 734                 if ( rc != SLAP_CB_CONTINUE ) goto error_return;
 735         }
 736
 737         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 738                 op->o_connid, rs->sr_entry->e_name.bv_val,
 739                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 740
 741         attrsonly = op->ors_attrsonly;
 742
 743         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 744                 Debug( LDAP_DEBUG_ACL,
 745                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 746                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 747
 748                 rc = LDAP_INSUFFICIENT_ACCESS;
 749                 goto error_return;
 750         }
 751
 752         edn = rs->sr_entry->e_nname.bv_val;
 753
 754         if ( op->o_res_ber ) {
 755                 /* read back control or LDAP_CONNECTIONLESS */
 756             ber = op->o_res_ber;
 757         } else {
 758                 struct berval   bv;
 759
 760                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 761                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 762
 763                 ber_init2( ber, &bv, LBER_USE_DER );
 764                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 765         }
 766
 767 #ifdef LDAP_CONNECTIONLESS
 768         if ( op->o_conn && op->o_conn->c_is_udp ) {
 769                 /* CONNECTIONLESS */
 770                 if ( op->o_protocol == LDAP_VERSION2 ) {
 771                 rc = ber_printf(ber, "t{O{" /*}}*/,
 772                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 773                 } else {
 774                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 775                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 776                 }
 777         } else
 778 #endif
 779         if ( op->o_res_ber ) {
 780                 /* read back control */
 781             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 782         } else {
 783             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 784                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 785         }
 786
 787         if ( rc == -1 ) {
 788                 Debug( LDAP_DEBUG_ANY,
 789                         "send_search_entry: conn %lu  ber_printf failed\n",
 790                         op->o_connid, 0, 0 );
 791
 792                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 793                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 794                 rc = rs->sr_err;
 795                 goto error_return;
 796         }
 797
 798         /* check for special all user attributes ("*") type */
 799         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 800
 801         /* create an array of arrays of flags. Each flag corresponds
 802          * to particular value of attribute and equals 1 if value matches
 803          * to ValuesReturnFilter or 0 if not
 804          */
 805         if ( op->o_vrFilter != NULL ) {
 806                 int     k = 0;
 807                 size_t  size;
 808
 809                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 810                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 811                 }
 812
 813                 size = i * sizeof(char *) + k;
 814                 if ( size > 0 ) {
 815                         char    *a_flags;
 816                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 817                         if( e_flags == NULL ) {
 818                         Debug( LDAP_DEBUG_ANY,
 819                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 820                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 821                                 ber_free( ber, 1 );
 822
 823                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 824                                 goto error_return;
 825                         }
 826                         a_flags = (char *)(e_flags + i);
 827                         memset( a_flags, 0, k );
 828                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 829                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 830                                 e_flags[i] = a_flags;
 831                                 a_flags += j;
 832                         }
 833
 834                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 835                         if ( rc == -1 ) {
 836                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 837                                         "conn %lu matched values filtering failed\n",
 838                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 839                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 840                                 send_ldap_error( op, rs, LDAP_OTHER,
 841                                         "matched values filtering error" );
 842                                 rc = rs->sr_err;
 843                                 goto error_return;
 844                         }
 845                 }
 846         }
 847
 848         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 849                 AttributeDescription *desc = a->a_desc;
 850                 int finish = 0;
 851
 852                 if ( rs->sr_attrs == NULL ) {
 853                         /* all user attrs request, skip operational attributes */
 854                         if( is_at_operational( desc->ad_type ) ) {
 855                                 continue;
 856                         }
 857
 858                 } else {
 859                         /* specific attrs requested */
 860                         if ( is_at_operational( desc->ad_type ) ) {
 861                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
 862                                         !ad_inlist( desc, rs->sr_attrs ) )
 863                                 {
 864                                         continue;
 865                                 }
 866
 867                         } else {
 868                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 869                                         continue;
 870                                 }
 871                         }
 872                 }
 873
 874                 if ( attrsonly ) {
 875                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 876                                 ACL_READ, &acl_state ) )
 877                         {
 878                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 879                                         "conn %lu access to attribute %s not allowed\n",
 880                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 881                                 continue;
 882                         }
 883
 884                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 885                                 Debug( LDAP_DEBUG_ANY,
 886                                         "send_search_entry: conn %lu  ber_printf failed\n",
 887                                         op->o_connid, 0, 0 );
 888
 889                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 890                                 send_ldap_error( op, rs, LDAP_OTHER,
 891                                         "encoding description error");
 892                                 rc = rs->sr_err;
 893                                 goto error_return;
 894                         }
 895                         finish = 1;
 896
 897                 } else {
 898                         int first = 1;
 899                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
 900                                 if ( ! access_allowed( op, rs->sr_entry,
 901                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
 902                                 {
 903                                         Debug( LDAP_DEBUG_ACL,
 904                                                 "send_search_entry: conn %lu "
 905                                                 "access to attribute %s, value #%d not allowed\n",
 906                                                 op->o_connid, desc->ad_cname.bv_val, i );
 907
 908                                         continue;
 909                                 }
 910
 911                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
 912                                         continue;
 913                                 }
 914
 915                                 if ( first ) {
 916                                         first = 0;
 917                                         finish = 1;
 918                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 919                                                 Debug( LDAP_DEBUG_ANY,
 920                                                         "send_search_entry: conn %lu  ber_printf failed\n",
 921                                                         op->o_connid, 0, 0 );
 922
 923                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 924                                                 send_ldap_error( op, rs, LDAP_OTHER,
 925                                                         "encoding description error");
 926                                                 rc = rs->sr_err;
 927                                                 goto error_return;
 928                                         }
 929                                 }
 930                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
 931                                         Debug( LDAP_DEBUG_ANY,
 932                                                 "send_search_entry: conn %lu  "
 933                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
 934
 935                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 936                                         send_ldap_error( op, rs, LDAP_OTHER,
 937                                                 "encoding values error" );
 938                                         rc = rs->sr_err;
 939                                         goto error_return;
 940                                 }
 941                         }
 942                 }
 943
 944                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
 945                         Debug( LDAP_DEBUG_ANY,
 946                                 "send_search_entry: conn %lu ber_printf failed\n",
 947                                 op->o_connid, 0, 0 );
 948
 949                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 950                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
 951                         rc = rs->sr_err;
 952                         goto error_return;
 953                 }
 954         }
 955
 956         /* NOTE: moved before overlays callback circling because
 957          * they may modify entry and other stuff in rs */
 958         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
 959                 int     k = 0;
 960                 size_t  size;
 961
 962                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 963                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 964                 }
 965
 966                 size = i * sizeof(char *) + k;
 967                 if ( size > 0 ) {
 968                         char    *a_flags, **tmp;
 969
 970                         /*
 971                          * Reuse previous memory - we likely need less space
 972                          * for operational attributes
 973                          */
 974                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
 975                                 op->o_tmpmemctx );
 976                         if ( tmp == NULL ) {
 977                                 Debug( LDAP_DEBUG_ANY,
 978                                         "send_search_entry: conn %lu "
 979                                         "not enough memory "
 980                                         "for matched values filtering\n",
 981                                         op->o_connid, 0, 0 );
 982                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 983                                 send_ldap_error( op, rs, LDAP_OTHER,
 984                                         "not enough memory for matched values filtering" );
 985                                 goto error_return;
 986                         }
 987                         e_flags = tmp;
 988                         a_flags = (char *)(e_flags + i);
 989                         memset( a_flags, 0, k );
 990                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 991                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 992                                 e_flags[i] = a_flags;
 993                                 a_flags += j;
 994                         }
 995                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
 996
 997                         if ( rc == -1 ) {
 998                                 Debug( LDAP_DEBUG_ANY,
 999                                         "send_search_entry: conn %lu "
1000                                         "matched values filtering failed\n",
1001                                         op->o_connid ? op->o_connid : 0, 0, 0);
1002                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1003                                 send_ldap_error( op, rs, LDAP_OTHER,
1004                                         "matched values filtering error" );
1005                                 rc = rs->sr_err;
1006                                 goto error_return;
1007                         }
1008                 }
1009         }
1010
1011         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1012                 AttributeDescription *desc = a->a_desc;
1013
1014                 if ( rs->sr_attrs == NULL ) {
1015                         /* all user attrs request, skip operational attributes */
1016                         if( is_at_operational( desc->ad_type ) ) {
1017                                 continue;
1018                         }
1019
1020                 } else {
1021                         /* specific attrs requested */
1022                         if( is_at_operational( desc->ad_type ) ) {
1023                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1024                                         !ad_inlist( desc, rs->sr_attrs ) )
1025                                 {
1026                                         continue;
1027                                 }
1028                         } else {
1029                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1030                                         continue;
1031                                 }
1032                         }
1033                 }
1034
1035                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1036                         ACL_READ, &acl_state ) )
1037                 {
1038                         Debug( LDAP_DEBUG_ACL,
1039                                 "send_search_entry: conn %lu "
1040                                 "access to attribute %s not allowed\n",
1041                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1042
1043                         continue;
1044                 }
1045
1046                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1047                 if ( rc == -1 ) {
1048                         Debug( LDAP_DEBUG_ANY,
1049                                 "send_search_entry: conn %lu  "
1050                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1051
1052                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1053                         send_ldap_error( op, rs, LDAP_OTHER,
1054                                 "encoding description error" );
1055                         rc = rs->sr_err;
1056                         goto error_return;
1057                 }
1058
1059                 if ( ! attrsonly ) {
1060                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1061                                 if ( ! access_allowed( op, rs->sr_entry,
1062                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1063                                 {
1064                                         Debug( LDAP_DEBUG_ACL,
1065                                                 "send_search_entry: conn %lu "
1066                                                 "access to %s, value %d not allowed\n",
1067                                                 op->o_connid, desc->ad_cname.bv_val, i );
1068
1069                                         continue;
1070                                 }
1071
1072                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1073                                         continue;
1074                                 }
1075
1076                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1077                                         Debug( LDAP_DEBUG_ANY,
1078                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1079                                                 op->o_connid, 0, 0 );
1080
1081                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1082                                         send_ldap_error( op, rs, LDAP_OTHER,
1083                                                 "encoding values error" );
1084                                         rc = rs->sr_err;
1085                                         goto error_return;
1086                                 }
1087                         }
1088                 }
1089
1090                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1091                         Debug( LDAP_DEBUG_ANY,
1092                                 "send_search_entry: conn %lu  ber_printf failed\n",
1093                                 op->o_connid, 0, 0 );
1094
1095                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1096                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1097                         rc = rs->sr_err;
1098                         goto error_return;
1099                 }
1100         }
1101
1102         /* free e_flags */
1103         if ( e_flags ) {
1104                 slap_sl_free( e_flags, op->o_tmpmemctx );
1105                 e_flags = NULL;
1106         }
1107
1108         rc = ber_printf( ber, /*{{*/ "}N}" );
1109
1110         if( rc != -1 ) {
1111                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1112         }
1113
1114         if( rc != -1 ) {
1115 #ifdef LDAP_CONNECTIONLESS
1116                 if( op->o_conn && op->o_conn->c_is_udp ) {
1117                         if ( op->o_protocol != LDAP_VERSION2 ) {
1118                                 rc = ber_printf( ber, /*{*/ "N}" );
1119                         }
1120                 } else
1121 #endif
1122                 if ( op->o_res_ber == NULL ) {
1123                         rc = ber_printf( ber, /*{*/ "N}" );
1124                 }
1125         }
1126
1127         if ( rc == -1 ) {
1128                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1129
1130                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1131                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1132                 rc = rs->sr_err;
1133                 goto error_return;
1134         }
1135
1136         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1137                 be_entry_release_rw( op, rs->sr_entry, 0 );
1138                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1139                 rs->sr_entry = NULL;
1140         }
1141
1142         if ( op->o_res_ber == NULL ) {
1143                 bytes = send_ldap_ber( op->o_conn, ber );
1144                 ber_free_buf( ber );
1145
1146                 if ( bytes < 0 ) {
1147                         Debug( LDAP_DEBUG_ANY,
1148                                 "send_search_entry: conn %lu  ber write failed.\n",
1149                                 op->o_connid, 0, 0 );
1150
1151                         rc = LDAP_UNAVAILABLE;
1152                         goto error_return;
1153                 }
1154                 rs->sr_nentries++;
1155
1156                 ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
1157                 ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1158                 ldap_pvt_mp_add_ulong( slap_counters.sc_entries, 1 );
1159                 ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1160                 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
1161         }
1162
1163         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1164             op->o_log_prefix, edn, 0, 0, 0 );
1165
1166         Debug( LDAP_DEBUG_TRACE,
1167                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1168
1169         rc = LDAP_SUCCESS;
1170
1171 error_return:;
1172         if ( op->o_callback ) {
1173                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
1174
1175                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1176                         sc_next = op->o_callback->sc_next;
1177                         if ( op->o_callback->sc_cleanup ) {
1178                                 (void)op->o_callback->sc_cleanup( op, rs );
1179                                 if ( op->o_callback != *sc_prev ) {
1180                                         *sc_prev = op->o_callback;
1181                                 }
1182                                 if ( !op->o_callback ) break;
1183                         }
1184                         sc_prev = &op->o_callback->sc_next;
1185                 }
1186                 op->o_callback = sc;
1187         }
1188
1189         if ( e_flags ) {
1190                 slap_sl_free( e_flags, op->o_tmpmemctx );
1191         }
1192
1193         if ( rs->sr_operational_attrs ) {
1194                 attrs_free( rs->sr_operational_attrs );
1195                 rs->sr_operational_attrs = NULL;
1196         }
1197         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1198
1199         /* FIXME: I think rs->sr_type should be explicitly set to
1200          * REP_SEARCH here. That's what it was when we entered this
1201          * function. send_ldap_error may have changed it, but we
1202          * should set it back so that the cleanup functions know
1203          * what they're doing.
1204          */
1205         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1206                 && rs->sr_entry
1207                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1208         {
1209                 entry_free( rs->sr_entry );
1210                 rs->sr_entry = NULL;
1211                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1212         }
1213
1214         return( rc );
1215 }
1216
1217 int
1218 slap_send_search_reference( Operation *op, SlapReply *rs )
1219 {
1220         BerElementBuffer berbuf;
1221         BerElement      *ber = (BerElement *) &berbuf;
1222         int rc = 0;
1223         int bytes;
1224
1225         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1226         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1227
1228         rs->sr_type = REP_SEARCHREF;
1229         if ( op->o_callback ) {
1230                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
1231
1232                 rc = SLAP_CB_CONTINUE;
1233                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1234                         sc_next = op->o_callback->sc_next;
1235                         if ( op->o_callback->sc_response ) {
1236                                 rc = op->o_callback->sc_response( op, rs );
1237                                 if ( op->o_callback != *sc_prev ) {
1238                                         *sc_prev = op->o_callback;
1239                                 }
1240                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
1241                         }
1242                         sc_prev = &op->o_callback->sc_next;
1243                 }
1244
1245                 op->o_callback = sc;
1246                 if ( rc != SLAP_CB_CONTINUE ) goto rel;
1247         }
1248
1249         Debug( LDAP_DEBUG_TRACE,
1250                 "=> send_search_reference: dn=\"%s\"\n",
1251                 rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)", 0, 0 );
1252
1253         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1254                 ad_entry, NULL, ACL_READ, NULL ) )
1255         {
1256                 Debug( LDAP_DEBUG_ACL,
1257                         "send_search_reference: access to entry not allowed\n",
1258                     0, 0, 0 );
1259                 rc = 1;
1260                 goto rel;
1261         }
1262
1263         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1264                 ad_ref, NULL, ACL_READ, NULL ) )
1265         {
1266                 Debug( LDAP_DEBUG_ACL,
1267                         "send_search_reference: access "
1268                         "to reference not allowed\n",
1269                     0, 0, 0 );
1270                 rc = 1;
1271                 goto rel;
1272         }
1273
1274 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1275         if( op->o_domain_scope ) {
1276                 Debug( LDAP_DEBUG_ANY,
1277                         "send_search_reference: domainScope control in (%s)\n",
1278                         rs->sr_entry->e_dn, 0, 0 );
1279                 rc = 0;
1280                 goto rel;
1281         }
1282 #endif
1283
1284         if( rs->sr_ref == NULL ) {
1285                 Debug( LDAP_DEBUG_ANY,
1286                         "send_search_reference: null ref in (%s)\n",
1287                         rs->sr_entry ? rs->sr_entry->e_dn : "(null)", 0, 0 );
1288                 rc = 1;
1289                 goto rel;
1290         }
1291
1292         if( op->o_protocol < LDAP_VERSION3 ) {
1293                 rc = 0;
1294                 /* save the references for the result */
1295                 if( rs->sr_ref[0].bv_val != NULL ) {
1296                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1297                                 rc = LDAP_OTHER;
1298                 }
1299                 goto rel;
1300         }
1301
1302 #ifdef LDAP_CONNECTIONLESS
1303         if( op->o_conn && op->o_conn->c_is_udp ) {
1304                 ber = op->o_res_ber;
1305         } else
1306 #endif
1307         {
1308                 ber_init_w_nullc( ber, LBER_USE_DER );
1309                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1310         }
1311
1312         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1313                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1314
1315         if( rc != -1 ) {
1316                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1317         }
1318
1319         if( rc != -1 ) {
1320                 rc = ber_printf( ber, /*"{"*/ "N}" );
1321         }
1322
1323         if ( rc == -1 ) {
1324                 Debug( LDAP_DEBUG_ANY,
1325                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1326
1327 #ifdef LDAP_CONNECTIONLESS
1328                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1329 #endif
1330                 ber_free_buf( ber );
1331                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1332                 goto rel;
1333         }
1334
1335         rc = 0;
1336         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1337                 be_entry_release_rw( op, rs->sr_entry, 0 );
1338                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1339                 rs->sr_entry = NULL;
1340         }
1341
1342 #ifdef LDAP_CONNECTIONLESS
1343         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1344 #endif
1345         bytes = send_ldap_ber( op->o_conn, ber );
1346         ber_free_buf( ber );
1347
1348         ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
1349         ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1350         ldap_pvt_mp_add_ulong( slap_counters.sc_refs, 1 );
1351         ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1352         ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
1353 #ifdef LDAP_CONNECTIONLESS
1354         }
1355 #endif
1356         if ( rs->sr_ref != NULL ) {
1357                 int     r;
1358
1359                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1360                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1361                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1362                                 0, 0 );
1363                 }
1364
1365         } else {
1366                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1367                         op->o_log_prefix, 0, 0, 0, 0 );
1368         }
1369
1370         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1371
1372 rel:
1373         if ( op->o_callback ) {
1374                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
1375
1376                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1377                         sc_next = op->o_callback->sc_next;
1378                         if ( op->o_callback->sc_cleanup ) {
1379                                 (void)op->o_callback->sc_cleanup( op, rs );
1380                                 if ( op->o_callback != *sc_prev ) {
1381                                         *sc_prev = op->o_callback;
1382                                 }
1383                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
1384                         }
1385                         sc_prev = &op->o_callback->sc_next;
1386                 }
1387                 op->o_callback = sc;
1388         }
1389
1390         return rc;
1391 }
1392
1393 int
1394 str2result(
1395     char        *s,
1396     int         *code,
1397     char        **matched,
1398     char        **info )
1399 {
1400         int     rc;
1401         char    *c;
1402
1403         *code = LDAP_SUCCESS;
1404         *matched = NULL;
1405         *info = NULL;
1406
1407         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1408                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1409                     s, 0, 0 );
1410
1411                 return( -1 );
1412         }
1413
1414         rc = 0;
1415         while ( (s = strchr( s, '\n' )) != NULL ) {
1416                 *s++ = '\0';
1417                 if ( *s == '\0' ) {
1418                         break;
1419                 }
1420                 if ( (c = strchr( s, ':' )) != NULL ) {
1421                         c++;
1422                 }
1423
1424                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1425                         if ( c != NULL && lutil_atoi( code, c ) != 0 ) {
1426                                 goto bailout;
1427                         }
1428                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1429                         if ( c != NULL ) {
1430                                 *matched = c;
1431                         }
1432                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1433                         if ( c != NULL ) {
1434                                 *info = c;
1435                         }
1436                 } else {
1437 bailout:;
1438                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1439                             s, 0, 0 );
1440
1441                         rc = -1;
1442                 }
1443         }
1444
1445         return( rc );
1446 }
1447
1448 int slap_read_controls(
1449         Operation *op,
1450         SlapReply *rs,
1451         Entry *e,
1452         const struct berval *oid,
1453         LDAPControl **ctrl )
1454 {
1455         int rc;
1456         struct berval bv;
1457         BerElementBuffer berbuf;
1458         BerElement *ber = (BerElement *) &berbuf;
1459         LDAPControl c;
1460         Operation myop;
1461
1462         Debug( LDAP_DEBUG_ANY, "slap_read_controls: (%s) %s\n",
1463                 oid->bv_val, e->e_dn, 0 );
1464
1465         rs->sr_entry = e;
1466         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1467                 op->o_preread_attrs : op->o_postread_attrs;
1468
1469         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1470         bv.bv_val = op->o_tmpalloc(bv.bv_len, op->o_tmpmemctx );
1471
1472         ber_init2( ber, &bv, LBER_USE_DER );
1473         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1474
1475         /* create new operation */
1476         myop = *op;
1477         myop.o_bd = NULL;
1478         myop.o_res_ber = ber;
1479         myop.o_callback = NULL;
1480
1481         rc = slap_send_search_entry( &myop, rs );
1482         if( rc ) return rc;
1483
1484         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1485
1486         if( rc == LBER_ERROR ) return LDAP_OTHER;
1487
1488         c.ldctl_oid = oid->bv_val;
1489         c.ldctl_iscritical = 0;
1490
1491         if ( *ctrl == NULL ) {
1492                 /* first try */
1493                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1494         } else {
1495                 /* retry: free previous try */
1496                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1497         }
1498
1499         **ctrl = c;
1500         return LDAP_SUCCESS;
1501 }
1502
1503 /* Map API errors to protocol errors... */
1504 int
1505 slap_map_api2result( SlapReply *rs )
1506 {
1507         switch(rs->sr_err) {
1508         case LDAP_SERVER_DOWN:
1509                 return LDAP_UNAVAILABLE;
1510         case LDAP_LOCAL_ERROR:
1511                 return LDAP_OTHER;
1512         case LDAP_ENCODING_ERROR:
1513         case LDAP_DECODING_ERROR:
1514                 return LDAP_PROTOCOL_ERROR;
1515         case LDAP_TIMEOUT:
1516                 return LDAP_UNAVAILABLE;
1517         case LDAP_AUTH_UNKNOWN:
1518                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1519         case LDAP_FILTER_ERROR:
1520                 rs->sr_text = "Filter error";
1521                 return LDAP_OTHER;
1522         case LDAP_USER_CANCELLED:
1523                 rs->sr_text = "User cancelled";
1524                 return LDAP_OTHER;
1525         case LDAP_PARAM_ERROR:
1526                 return LDAP_PROTOCOL_ERROR;
1527         case LDAP_NO_MEMORY:
1528                 return LDAP_OTHER;
1529         case LDAP_CONNECT_ERROR:
1530                 return LDAP_UNAVAILABLE;
1531         case LDAP_NOT_SUPPORTED:
1532                 return LDAP_UNWILLING_TO_PERFORM;
1533         case LDAP_CONTROL_NOT_FOUND:
1534                 return LDAP_PROTOCOL_ERROR;
1535         case LDAP_NO_RESULTS_RETURNED:
1536                 return LDAP_NO_SUCH_OBJECT;
1537         case LDAP_MORE_RESULTS_TO_RETURN:
1538                 rs->sr_text = "More results to return";
1539                 return LDAP_OTHER;
1540         case LDAP_CLIENT_LOOP:
1541         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1542                 return LDAP_LOOP_DETECT;
1543         default:
1544                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1545                 return rs->sr_err;
1546         }
1547 }
1548
1549
1550 slap_mask_t
1551 slap_attr_flags( AttributeName *an )
1552 {
1553         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1554
1555         if ( an == NULL ) {
1556                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1557
1558         } else {
1559                 flags |= an_find( an, &AllOper )
1560                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1561                 flags |= an_find( an, &AllUser )
1562                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1563         }
1564
1565         return flags;
1566 }
1567