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                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 561
 562                 if( rs->sr_ref == NULL ) {
 563                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 564                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 565                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 566                 }
 567         }
 568
 569         if ( op->o_protocol < LDAP_VERSION3 ) {
 570                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 571                 rs->sr_text = tmp;
 572                 rs->sr_ref = NULL;
 573         }
 574
 575         rs->sr_tag = slap_req2res( op->o_tag );
 576         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 577
 578 abandon:
 579         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 580                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 581                         char nbuf[64];
 582                         snprintf( nbuf, sizeof nbuf, "%d nentries=%d",
 583                                 rs->sr_err, rs->sr_nentries );
 584
 585                         Statslog( LDAP_DEBUG_STATS,
 586                         "%s SEARCH RESULT tag=%lu err=%s text=%s\n",
 587                                 op->o_log_prefix, rs->sr_tag, nbuf,
 588                                 rs->sr_text ? rs->sr_text : "", 0 );
 589                 } else {
 590                         Statslog( LDAP_DEBUG_STATS,
 591                                 "%s RESULT tag=%lu err=%d text=%s\n",
 592                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 593                                 rs->sr_text ? rs->sr_text : "", 0 );
 594                 }
 595         }
 596
 597         if( tmp != NULL ) ch_free(tmp);
 598         rs->sr_text = otext;
 599         rs->sr_ref = oref;
 600 }
 601
 602 void
 603 send_ldap_sasl( Operation *op, SlapReply *rs )
 604 {
 605         rs->sr_type = REP_SASL;
 606         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 607                 rs->sr_err,
 608                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 609
 610         rs->sr_tag = slap_req2res( op->o_tag );
 611         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 612
 613         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 614                 Statslog( LDAP_DEBUG_STATS,
 615                         "%s RESULT tag=%lu err=%d text=%s\n",
 616                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 617                         rs->sr_text ? rs->sr_text : "", 0 );
 618         }
 619 }
 620
 621 void
 622 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 623 {
 624         rs->sr_type = REP_EXTENDED;
 625
 626         Debug( LDAP_DEBUG_TRACE,
 627                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 628                 rs->sr_err,
 629                 rs->sr_rspoid ? rs->sr_rspoid : "",
 630                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 631
 632         rs->sr_tag = slap_req2res( op->o_tag );
 633         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 634
 635         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 636                 Statslog( LDAP_DEBUG_STATS,
 637                         "%s RESULT oid=%s err=%d text=%s\n",
 638                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 639                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 640         }
 641 }
 642
 643 void
 644 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 645 {
 646         rs->sr_type = REP_INTERMEDIATE;
 647         Debug( LDAP_DEBUG_TRACE,
 648                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 649                 rs->sr_err,
 650                 rs->sr_rspoid ? rs->sr_rspoid : "",
 651                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 652         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 653         rs->sr_msgid = op->o_msgid;
 654         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 655                 Statslog( LDAP_DEBUG_STATS2,
 656                         "%s INTERM oid=%s\n",
 657                         op->o_log_prefix,
 658                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 659         }
 660 }
 661
 662 /*
 663  * returns:
 664  *
 665  * LDAP_SUCCESS                 entry sent
 666  * LDAP_OTHER                   entry not sent (other)
 667  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 668  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 669  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 670  */
 671
 672 int
 673 slap_send_search_entry( Operation *op, SlapReply *rs )
 674 {
 675         BerElementBuffer berbuf;
 676         BerElement      *ber = (BerElement *) &berbuf;
 677         Attribute       *a;
 678         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 679         char            *edn;
 680         int             userattrs;
 681         AccessControlState acl_state = ACL_STATE_INIT;
 682         int                      attrsonly;
 683         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 684
 685         /* a_flags: array of flags telling if the i-th element will be
 686          *          returned or filtered out
 687          * e_flags: array of a_flags
 688          */
 689         char **e_flags = NULL;
 690
 691         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 692                 return LDAP_SIZELIMIT_EXCEEDED;
 693         }
 694
 695         rs->sr_type = REP_SEARCH;
 696
 697         /* eventually will loop through generated operational attribute types
 698          * currently implemented types include:
 699          *      entryDN, subschemaSubentry, and hasSubordinates */
 700         /* NOTE: moved before overlays callback circling because
 701          * they may modify entry and other stuff in rs */
 702         /* check for special all operational attributes ("+") type */
 703         /* FIXME: maybe we could se this flag at the operation level;
 704          * however, in principle the caller of send_search_entry() may
 705          * change the attribute list at each call */
 706         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 707
 708         rc = backend_operational( op, rs );
 709         if ( rc ) {
 710                 goto error_return;
 711         }
 712
 713         if ( op->o_callback ) {
 714                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
 715
 716                 rc = SLAP_CB_CONTINUE;
 717                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next )
 718                 {
 719                         sc_next = op->o_callback->sc_next;
 720                         if ( op->o_callback->sc_response ) {
 721                                 rc = op->o_callback->sc_response( op, rs );
 722                                 if ( op->o_callback != *sc_prev ) {
 723                                         *sc_prev = op->o_callback;
 724                                 }
 725                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
 726                         }
 727                         sc_prev = &op->o_callback->sc_next;
 728                 }
 729
 730                 op->o_callback = sc;
 731                 if ( rc != SLAP_CB_CONTINUE ) goto error_return;
 732         }
 733
 734         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 735                 op->o_connid, rs->sr_entry->e_name.bv_val,
 736                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 737
 738         attrsonly = op->ors_attrsonly;
 739
 740         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 741                 Debug( LDAP_DEBUG_ACL,
 742                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 743                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 744
 745                 rc = LDAP_INSUFFICIENT_ACCESS;
 746                 goto error_return;
 747         }
 748
 749         edn = rs->sr_entry->e_nname.bv_val;
 750
 751         if ( op->o_res_ber ) {
 752                 /* read back control or LDAP_CONNECTIONLESS */
 753             ber = op->o_res_ber;
 754         } else {
 755                 struct berval   bv;
 756
 757                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 758                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 759
 760                 ber_init2( ber, &bv, LBER_USE_DER );
 761                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 762         }
 763
 764 #ifdef LDAP_CONNECTIONLESS
 765         if ( op->o_conn && op->o_conn->c_is_udp ) {
 766                 /* CONNECTIONLESS */
 767                 if ( op->o_protocol == LDAP_VERSION2 ) {
 768                 rc = ber_printf(ber, "t{O{" /*}}*/,
 769                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 770                 } else {
 771                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 772                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 773                 }
 774         } else
 775 #endif
 776         if ( op->o_res_ber ) {
 777                 /* read back control */
 778             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 779         } else {
 780             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 781                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 782         }
 783
 784         if ( rc == -1 ) {
 785                 Debug( LDAP_DEBUG_ANY,
 786                         "send_search_entry: conn %lu  ber_printf failed\n",
 787                         op->o_connid, 0, 0 );
 788
 789                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 790                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 791                 rc = rs->sr_err;
 792                 goto error_return;
 793         }
 794
 795         /* check for special all user attributes ("*") type */
 796         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 797
 798         /* create an array of arrays of flags. Each flag corresponds
 799          * to particular value of attribute and equals 1 if value matches
 800          * to ValuesReturnFilter or 0 if not
 801          */
 802         if ( op->o_vrFilter != NULL ) {
 803                 int     k = 0;
 804                 size_t  size;
 805
 806                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 807                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 808                 }
 809
 810                 size = i * sizeof(char *) + k;
 811                 if ( size > 0 ) {
 812                         char    *a_flags;
 813                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 814                         if( e_flags == NULL ) {
 815                         Debug( LDAP_DEBUG_ANY,
 816                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 817                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 818                                 ber_free( ber, 1 );
 819
 820                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 821                                 goto error_return;
 822                         }
 823                         a_flags = (char *)(e_flags + i);
 824                         memset( a_flags, 0, k );
 825                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 826                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 827                                 e_flags[i] = a_flags;
 828                                 a_flags += j;
 829                         }
 830
 831                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 832                         if ( rc == -1 ) {
 833                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 834                                         "conn %lu matched values filtering failed\n",
 835                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 836                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 837                                 send_ldap_error( op, rs, LDAP_OTHER,
 838                                         "matched values filtering error" );
 839                                 rc = rs->sr_err;
 840                                 goto error_return;
 841                         }
 842                 }
 843         }
 844
 845         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 846                 AttributeDescription *desc = a->a_desc;
 847                 int finish = 0;
 848
 849                 if ( rs->sr_attrs == NULL ) {
 850                         /* all user attrs request, skip operational attributes */
 851                         if( is_at_operational( desc->ad_type ) ) {
 852                                 continue;
 853                         }
 854
 855                 } else {
 856                         /* specific attrs requested */
 857                         if ( is_at_operational( desc->ad_type ) ) {
 858                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
 859                                         !ad_inlist( desc, rs->sr_attrs ) )
 860                                 {
 861                                         continue;
 862                                 }
 863
 864                         } else {
 865                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 866                                         continue;
 867                                 }
 868                         }
 869                 }
 870
 871                 if ( attrsonly ) {
 872                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 873                                 ACL_READ, &acl_state ) )
 874                         {
 875                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 876                                         "conn %lu access to attribute %s not allowed\n",
 877                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 878                                 continue;
 879                         }
 880
 881                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 882                                 Debug( LDAP_DEBUG_ANY,
 883                                         "send_search_entry: conn %lu  ber_printf failed\n",
 884                                         op->o_connid, 0, 0 );
 885
 886                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 887                                 send_ldap_error( op, rs, LDAP_OTHER,
 888                                         "encoding description error");
 889                                 rc = rs->sr_err;
 890                                 goto error_return;
 891                         }
 892                         finish = 1;
 893
 894                 } else {
 895                         int first = 1;
 896                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
 897                                 if ( ! access_allowed( op, rs->sr_entry,
 898                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
 899                                 {
 900                                         Debug( LDAP_DEBUG_ACL,
 901                                                 "send_search_entry: conn %lu "
 902                                                 "access to attribute %s, value #%d not allowed\n",
 903                                                 op->o_connid, desc->ad_cname.bv_val, i );
 904
 905                                         continue;
 906                                 }
 907
 908                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
 909                                         continue;
 910                                 }
 911
 912                                 if ( first ) {
 913                                         first = 0;
 914                                         finish = 1;
 915                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 916                                                 Debug( LDAP_DEBUG_ANY,
 917                                                         "send_search_entry: conn %lu  ber_printf failed\n",
 918                                                         op->o_connid, 0, 0 );
 919
 920                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 921                                                 send_ldap_error( op, rs, LDAP_OTHER,
 922                                                         "encoding description error");
 923                                                 rc = rs->sr_err;
 924                                                 goto error_return;
 925                                         }
 926                                 }
 927                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
 928                                         Debug( LDAP_DEBUG_ANY,
 929                                                 "send_search_entry: conn %lu  "
 930                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
 931
 932                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 933                                         send_ldap_error( op, rs, LDAP_OTHER,
 934                                                 "encoding values error" );
 935                                         rc = rs->sr_err;
 936                                         goto error_return;
 937                                 }
 938                         }
 939                 }
 940
 941                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
 942                         Debug( LDAP_DEBUG_ANY,
 943                                 "send_search_entry: conn %lu ber_printf failed\n",
 944                                 op->o_connid, 0, 0 );
 945
 946                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 947                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
 948                         rc = rs->sr_err;
 949                         goto error_return;
 950                 }
 951         }
 952
 953         /* NOTE: moved before overlays callback circling because
 954          * they may modify entry and other stuff in rs */
 955         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
 956                 int     k = 0;
 957                 size_t  size;
 958
 959                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 960                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 961                 }
 962
 963                 size = i * sizeof(char *) + k;
 964                 if ( size > 0 ) {
 965                         char    *a_flags, **tmp;
 966
 967                         /*
 968                          * Reuse previous memory - we likely need less space
 969                          * for operational attributes
 970                          */
 971                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
 972                                 op->o_tmpmemctx );
 973                         if ( tmp == NULL ) {
 974                                 Debug( LDAP_DEBUG_ANY,
 975                                         "send_search_entry: conn %lu "
 976                                         "not enough memory "
 977                                         "for matched values filtering\n",
 978                                         op->o_connid, 0, 0 );
 979                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 980                                 send_ldap_error( op, rs, LDAP_OTHER,
 981                                         "not enough memory for matched values filtering" );
 982                                 goto error_return;
 983                         }
 984                         e_flags = tmp;
 985                         a_flags = (char *)(e_flags + i);
 986                         memset( a_flags, 0, k );
 987                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 988                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 989                                 e_flags[i] = a_flags;
 990                                 a_flags += j;
 991                         }
 992                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
 993
 994                         if ( rc == -1 ) {
 995                                 Debug( LDAP_DEBUG_ANY,
 996                                         "send_search_entry: conn %lu "
 997                                         "matched values filtering failed\n",
 998                                         op->o_connid ? op->o_connid : 0, 0, 0);
 999                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1000                                 send_ldap_error( op, rs, LDAP_OTHER,
1001                                         "matched values filtering error" );
1002                                 rc = rs->sr_err;
1003                                 goto error_return;
1004                         }
1005                 }
1006         }
1007
1008         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1009                 AttributeDescription *desc = a->a_desc;
1010
1011                 if ( rs->sr_attrs == NULL ) {
1012                         /* all user attrs request, skip operational attributes */
1013                         if( is_at_operational( desc->ad_type ) ) {
1014                                 continue;
1015                         }
1016
1017                 } else {
1018                         /* specific attrs requested */
1019                         if( is_at_operational( desc->ad_type ) ) {
1020                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1021                                         !ad_inlist( desc, rs->sr_attrs ) )
1022                                 {
1023                                         continue;
1024                                 }
1025                         } else {
1026                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1027                                         continue;
1028                                 }
1029                         }
1030                 }
1031
1032                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1033                         ACL_READ, &acl_state ) )
1034                 {
1035                         Debug( LDAP_DEBUG_ACL,
1036                                 "send_search_entry: conn %lu "
1037                                 "access to attribute %s not allowed\n",
1038                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1039
1040                         continue;
1041                 }
1042
1043                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1044                 if ( rc == -1 ) {
1045                         Debug( LDAP_DEBUG_ANY,
1046                                 "send_search_entry: conn %lu  "
1047                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1048
1049                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1050                         send_ldap_error( op, rs, LDAP_OTHER,
1051                                 "encoding description error" );
1052                         rc = rs->sr_err;
1053                         goto error_return;
1054                 }
1055
1056                 if ( ! attrsonly ) {
1057                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1058                                 if ( ! access_allowed( op, rs->sr_entry,
1059                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1060                                 {
1061                                         Debug( LDAP_DEBUG_ACL,
1062                                                 "send_search_entry: conn %lu "
1063                                                 "access to %s, value %d not allowed\n",
1064                                                 op->o_connid, desc->ad_cname.bv_val, i );
1065
1066                                         continue;
1067                                 }
1068
1069                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1070                                         continue;
1071                                 }
1072
1073                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1074                                         Debug( LDAP_DEBUG_ANY,
1075                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1076                                                 op->o_connid, 0, 0 );
1077
1078                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1079                                         send_ldap_error( op, rs, LDAP_OTHER,
1080                                                 "encoding values error" );
1081                                         rc = rs->sr_err;
1082                                         goto error_return;
1083                                 }
1084                         }
1085                 }
1086
1087                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1088                         Debug( LDAP_DEBUG_ANY,
1089                                 "send_search_entry: conn %lu  ber_printf failed\n",
1090                                 op->o_connid, 0, 0 );
1091
1092                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1093                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1094                         rc = rs->sr_err;
1095                         goto error_return;
1096                 }
1097         }
1098
1099         /* free e_flags */
1100         if ( e_flags ) {
1101                 slap_sl_free( e_flags, op->o_tmpmemctx );
1102                 e_flags = NULL;
1103         }
1104
1105         rc = ber_printf( ber, /*{{*/ "}N}" );
1106
1107         if( rc != -1 ) {
1108                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1109         }
1110
1111         if( rc != -1 ) {
1112 #ifdef LDAP_CONNECTIONLESS
1113                 if( op->o_conn && op->o_conn->c_is_udp ) {
1114                         if ( op->o_protocol != LDAP_VERSION2 ) {
1115                                 rc = ber_printf( ber, /*{*/ "N}" );
1116                         }
1117                 } else
1118 #endif
1119                 if ( op->o_res_ber == NULL ) {
1120                         rc = ber_printf( ber, /*{*/ "N}" );
1121                 }
1122         }
1123
1124         if ( rc == -1 ) {
1125                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1126
1127                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1128                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1129                 rc = rs->sr_err;
1130                 goto error_return;
1131         }
1132
1133         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1134                 be_entry_release_rw( op, rs->sr_entry, 0 );
1135                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1136                 rs->sr_entry = NULL;
1137         }
1138
1139         if ( op->o_res_ber == NULL ) {
1140                 bytes = send_ldap_ber( op->o_conn, ber );
1141                 ber_free_buf( ber );
1142
1143                 if ( bytes < 0 ) {
1144                         Debug( LDAP_DEBUG_ANY,
1145                                 "send_search_entry: conn %lu  ber write failed.\n",
1146                                 op->o_connid, 0, 0 );
1147
1148                         rc = LDAP_UNAVAILABLE;
1149                         goto error_return;
1150                 }
1151                 rs->sr_nentries++;
1152
1153                 ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
1154                 ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1155                 ldap_pvt_mp_add_ulong( slap_counters.sc_entries, 1 );
1156                 ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1157                 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
1158         }
1159
1160         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1161             op->o_log_prefix, edn, 0, 0, 0 );
1162
1163         Debug( LDAP_DEBUG_TRACE,
1164                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1165
1166         rc = LDAP_SUCCESS;
1167
1168 error_return:;
1169         if ( op->o_callback ) {
1170                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
1171
1172                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1173                         sc_next = op->o_callback->sc_next;
1174                         if ( op->o_callback->sc_cleanup ) {
1175                                 (void)op->o_callback->sc_cleanup( op, rs );
1176                                 if ( op->o_callback != *sc_prev ) {
1177                                         *sc_prev = op->o_callback;
1178                                 }
1179                                 if ( !op->o_callback ) break;
1180                         }
1181                         sc_prev = &op->o_callback->sc_next;
1182                 }
1183                 op->o_callback = sc;
1184         }
1185
1186         if ( e_flags ) {
1187                 slap_sl_free( e_flags, op->o_tmpmemctx );
1188         }
1189
1190         if ( rs->sr_operational_attrs ) {
1191                 attrs_free( rs->sr_operational_attrs );
1192                 rs->sr_operational_attrs = NULL;
1193         }
1194         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1195
1196         /* FIXME: I think rs->sr_type should be explicitly set to
1197          * REP_SEARCH here. That's what it was when we entered this
1198          * function. send_ldap_error may have changed it, but we
1199          * should set it back so that the cleanup functions know
1200          * what they're doing.
1201          */
1202         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1203                 && rs->sr_entry
1204                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1205         {
1206                 entry_free( rs->sr_entry );
1207                 rs->sr_entry = NULL;
1208                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1209         }
1210
1211         return( rc );
1212 }
1213
1214 int
1215 slap_send_search_reference( Operation *op, SlapReply *rs )
1216 {
1217         BerElementBuffer berbuf;
1218         BerElement      *ber = (BerElement *) &berbuf;
1219         int rc = 0;
1220         int bytes;
1221
1222         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1223         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1224
1225         rs->sr_type = REP_SEARCHREF;
1226         if ( op->o_callback ) {
1227                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
1228
1229                 rc = SLAP_CB_CONTINUE;
1230                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1231                         sc_next = op->o_callback->sc_next;
1232                         if ( op->o_callback->sc_response ) {
1233                                 rc = op->o_callback->sc_response( op, rs );
1234                                 if ( op->o_callback != *sc_prev ) {
1235                                         *sc_prev = op->o_callback;
1236                                 }
1237                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
1238                         }
1239                         sc_prev = &op->o_callback->sc_next;
1240                 }
1241
1242                 op->o_callback = sc;
1243                 if ( rc != SLAP_CB_CONTINUE ) goto rel;
1244         }
1245
1246         Debug( LDAP_DEBUG_TRACE,
1247                 "=> send_search_reference: dn=\"%s\"\n",
1248                 rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)", 0, 0 );
1249
1250         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1251                 ad_entry, NULL, ACL_READ, NULL ) )
1252         {
1253                 Debug( LDAP_DEBUG_ACL,
1254                         "send_search_reference: access to entry not allowed\n",
1255                     0, 0, 0 );
1256                 rc = 1;
1257                 goto rel;
1258         }
1259
1260         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1261                 ad_ref, NULL, ACL_READ, NULL ) )
1262         {
1263                 Debug( LDAP_DEBUG_ACL,
1264                         "send_search_reference: access "
1265                         "to reference not allowed\n",
1266                     0, 0, 0 );
1267                 rc = 1;
1268                 goto rel;
1269         }
1270
1271         if( op->o_domain_scope ) {
1272                 Debug( LDAP_DEBUG_ANY,
1273                         "send_search_reference: domainScope control in (%s)\n",
1274                         rs->sr_entry->e_dn, 0, 0 );
1275                 rc = 0;
1276                 goto rel;
1277         }
1278
1279         if( rs->sr_ref == NULL ) {
1280                 Debug( LDAP_DEBUG_ANY,
1281                         "send_search_reference: null ref in (%s)\n",
1282                         rs->sr_entry ? rs->sr_entry->e_dn : "(null)", 0, 0 );
1283                 rc = 1;
1284                 goto rel;
1285         }
1286
1287         if( op->o_protocol < LDAP_VERSION3 ) {
1288                 rc = 0;
1289                 /* save the references for the result */
1290                 if( rs->sr_ref[0].bv_val != NULL ) {
1291                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1292                                 rc = LDAP_OTHER;
1293                 }
1294                 goto rel;
1295         }
1296
1297 #ifdef LDAP_CONNECTIONLESS
1298         if( op->o_conn && op->o_conn->c_is_udp ) {
1299                 ber = op->o_res_ber;
1300         } else
1301 #endif
1302         {
1303                 ber_init_w_nullc( ber, LBER_USE_DER );
1304                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1305         }
1306
1307         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1308                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1309
1310         if( rc != -1 ) {
1311                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1312         }
1313
1314         if( rc != -1 ) {
1315                 rc = ber_printf( ber, /*"{"*/ "N}" );
1316         }
1317
1318         if ( rc == -1 ) {
1319                 Debug( LDAP_DEBUG_ANY,
1320                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1321
1322 #ifdef LDAP_CONNECTIONLESS
1323                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1324 #endif
1325                 ber_free_buf( ber );
1326                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1327                 goto rel;
1328         }
1329
1330         rc = 0;
1331         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1332                 be_entry_release_rw( op, rs->sr_entry, 0 );
1333                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1334                 rs->sr_entry = NULL;
1335         }
1336
1337 #ifdef LDAP_CONNECTIONLESS
1338         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1339 #endif
1340         bytes = send_ldap_ber( op->o_conn, ber );
1341         ber_free_buf( ber );
1342
1343         ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
1344         ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1345         ldap_pvt_mp_add_ulong( slap_counters.sc_refs, 1 );
1346         ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1347         ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
1348 #ifdef LDAP_CONNECTIONLESS
1349         }
1350 #endif
1351         if ( rs->sr_ref != NULL ) {
1352                 int     r;
1353
1354                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1355                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1356                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1357                                 0, 0 );
1358                 }
1359
1360         } else {
1361                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1362                         op->o_log_prefix, 0, 0, 0, 0 );
1363         }
1364
1365         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1366
1367 rel:
1368         if ( op->o_callback ) {
1369                 slap_callback   *sc = op->o_callback, **sc_prev = &sc, *sc_next;
1370
1371                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1372                         sc_next = op->o_callback->sc_next;
1373                         if ( op->o_callback->sc_cleanup ) {
1374                                 (void)op->o_callback->sc_cleanup( op, rs );
1375                                 if ( op->o_callback != *sc_prev ) {
1376                                         *sc_prev = op->o_callback;
1377                                 }
1378                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
1379                         }
1380                         sc_prev = &op->o_callback->sc_next;
1381                 }
1382                 op->o_callback = sc;
1383         }
1384
1385         return rc;
1386 }
1387
1388 int
1389 str2result(
1390     char        *s,
1391     int         *code,
1392     char        **matched,
1393     char        **info )
1394 {
1395         int     rc;
1396         char    *c;
1397
1398         *code = LDAP_SUCCESS;
1399         *matched = NULL;
1400         *info = NULL;
1401
1402         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1403                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1404                     s, 0, 0 );
1405
1406                 return( -1 );
1407         }
1408
1409         rc = 0;
1410         while ( (s = strchr( s, '\n' )) != NULL ) {
1411                 *s++ = '\0';
1412                 if ( *s == '\0' ) {
1413                         break;
1414                 }
1415                 if ( (c = strchr( s, ':' )) != NULL ) {
1416                         c++;
1417                 }
1418
1419                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1420                         if ( c != NULL && lutil_atoi( code, c ) != 0 ) {
1421                                 goto bailout;
1422                         }
1423                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1424                         if ( c != NULL ) {
1425                                 *matched = c;
1426                         }
1427                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1428                         if ( c != NULL ) {
1429                                 *info = c;
1430                         }
1431                 } else {
1432 bailout:;
1433                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1434                             s, 0, 0 );
1435
1436                         rc = -1;
1437                 }
1438         }
1439
1440         return( rc );
1441 }
1442
1443 int slap_read_controls(
1444         Operation *op,
1445         SlapReply *rs,
1446         Entry *e,
1447         const struct berval *oid,
1448         LDAPControl **ctrl )
1449 {
1450         int rc;
1451         struct berval bv;
1452         BerElementBuffer berbuf;
1453         BerElement *ber = (BerElement *) &berbuf;
1454         LDAPControl c;
1455         Operation myop;
1456
1457         Debug( LDAP_DEBUG_ANY, "slap_read_controls: (%s) %s\n",
1458                 oid->bv_val, e->e_dn, 0 );
1459
1460         rs->sr_entry = e;
1461         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1462                 op->o_preread_attrs : op->o_postread_attrs;
1463
1464         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1465         bv.bv_val = op->o_tmpalloc(bv.bv_len, op->o_tmpmemctx );
1466
1467         ber_init2( ber, &bv, LBER_USE_DER );
1468         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1469
1470         /* create new operation */
1471         myop = *op;
1472         myop.o_bd = NULL;
1473         myop.o_res_ber = ber;
1474         myop.o_callback = NULL;
1475
1476         rc = slap_send_search_entry( &myop, rs );
1477         if( rc ) return rc;
1478
1479         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1480
1481         if( rc == LBER_ERROR ) return LDAP_OTHER;
1482
1483         c.ldctl_oid = oid->bv_val;
1484         c.ldctl_iscritical = 0;
1485
1486         if ( *ctrl == NULL ) {
1487                 /* first try */
1488                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1489         } else {
1490                 /* retry: free previous try */
1491                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1492         }
1493
1494         **ctrl = c;
1495         return LDAP_SUCCESS;
1496 }
1497
1498 /* Map API errors to protocol errors... */
1499 int
1500 slap_map_api2result( SlapReply *rs )
1501 {
1502         switch(rs->sr_err) {
1503         case LDAP_SERVER_DOWN:
1504                 return LDAP_UNAVAILABLE;
1505         case LDAP_LOCAL_ERROR:
1506                 return LDAP_OTHER;
1507         case LDAP_ENCODING_ERROR:
1508         case LDAP_DECODING_ERROR:
1509                 return LDAP_PROTOCOL_ERROR;
1510         case LDAP_TIMEOUT:
1511                 return LDAP_UNAVAILABLE;
1512         case LDAP_AUTH_UNKNOWN:
1513                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1514         case LDAP_FILTER_ERROR:
1515                 rs->sr_text = "Filter error";
1516                 return LDAP_OTHER;
1517         case LDAP_USER_CANCELLED:
1518                 rs->sr_text = "User cancelled";
1519                 return LDAP_OTHER;
1520         case LDAP_PARAM_ERROR:
1521                 return LDAP_PROTOCOL_ERROR;
1522         case LDAP_NO_MEMORY:
1523                 return LDAP_OTHER;
1524         case LDAP_CONNECT_ERROR:
1525                 return LDAP_UNAVAILABLE;
1526         case LDAP_NOT_SUPPORTED:
1527                 return LDAP_UNWILLING_TO_PERFORM;
1528         case LDAP_CONTROL_NOT_FOUND:
1529                 return LDAP_PROTOCOL_ERROR;
1530         case LDAP_NO_RESULTS_RETURNED:
1531                 return LDAP_NO_SUCH_OBJECT;
1532         case LDAP_MORE_RESULTS_TO_RETURN:
1533                 rs->sr_text = "More results to return";
1534                 return LDAP_OTHER;
1535         case LDAP_CLIENT_LOOP:
1536         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1537                 return LDAP_LOOP_DETECT;
1538         default:
1539                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1540                 return rs->sr_err;
1541         }
1542 }
1543
1544
1545 slap_mask_t
1546 slap_attr_flags( AttributeName *an )
1547 {
1548         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1549
1550         if ( an == NULL ) {
1551                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1552
1553         } else {
1554                 flags |= an_find( an, &AllOper )
1555                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1556                 flags |= an_find( an, &AllUser )
1557                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1558         }
1559
1560         return flags;
1561 }
1562