git.sur5r.net Git - openldap/blob - servers/slapd/result.c

   1 /* result.c - routines to send ldap results, errors, and referrals */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2005 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27 #include "portable.h"
  28
  29 #include <stdio.h>
  30
  31 #include <ac/socket.h>
  32 #include <ac/errno.h>
  33 #include <ac/string.h>
  34 #include <ac/ctype.h>
  35 #include <ac/time.h>
  36 #include <ac/unistd.h>
  37
  38 #include "slap.h"
  39
  40 const struct berval slap_dummy_bv = BER_BVNULL;
  41
  42 int slap_null_cb( Operation *op, SlapReply *rs )
  43 {
  44         return 0;
  45 }
  46
  47 int slap_freeself_cb( Operation *op, SlapReply *rs )
  48 {
  49         assert( op->o_callback != NULL );
  50
  51         op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
  52         op->o_callback = NULL;
  53
  54         return SLAP_CB_CONTINUE;
  55 }
  56
  57 int slap_replog_cb( Operation *op, SlapReply *rs )
  58 {
  59         if ( rs->sr_err == LDAP_SUCCESS ) {
  60                 replog( op );
  61         }
  62         return SLAP_CB_CONTINUE;
  63 }
  64
  65 static char *v2ref( BerVarray ref, const char *text )
  66 {
  67         size_t len = 0, i = 0;
  68         char *v2;
  69
  70         if(ref == NULL) {
  71                 if (text) {
  72                         return ch_strdup(text);
  73                 } else {
  74                         return NULL;
  75                 }
  76         }
  77
  78         if ( text != NULL ) {
  79                 len = strlen( text );
  80                 if (text[len-1] != '\n') {
  81                     i = 1;
  82                 }
  83         }
  84
  85         v2 = SLAP_MALLOC( len+i+sizeof("Referral:") );
  86         if( v2 == NULL ) {
  87                 Debug( LDAP_DEBUG_ANY, "v2ref: SLAP_MALLOC failed", 0, 0, 0 );
  88                 return NULL;
  89         }
  90
  91         if( text != NULL ) {
  92                 strcpy(v2, text);
  93                 if( i ) {
  94                         v2[len++] = '\n';
  95                 }
  96         }
  97         strcpy( v2+len, "Referral:" );
  98         len += sizeof("Referral:");
  99
 100         for( i=0; ref[i].bv_val != NULL; i++ ) {
 101                 v2 = SLAP_REALLOC( v2, len + ref[i].bv_len + 1 );
 102                 if( v2 == NULL ) {
 103                         Debug( LDAP_DEBUG_ANY, "v2ref: SLAP_MALLOC failed", 0, 0, 0 );
 104                         return NULL;
 105                 }
 106                 v2[len-1] = '\n';
 107                 AC_MEMCPY(&v2[len], ref[i].bv_val, ref[i].bv_len );
 108                 len += ref[i].bv_len;
 109                 if (ref[i].bv_val[ref[i].bv_len-1] != '/') {
 110                         ++len;
 111                 }
 112         }
 113
 114         v2[len-1] = '\0';
 115         return v2;
 116 }
 117
 118 static ber_tag_t req2res( ber_tag_t tag )
 119 {
 120         switch( tag ) {
 121         case LDAP_REQ_ADD:
 122         case LDAP_REQ_BIND:
 123         case LDAP_REQ_COMPARE:
 124         case LDAP_REQ_EXTENDED:
 125         case LDAP_REQ_MODIFY:
 126         case LDAP_REQ_MODRDN:
 127                 tag++;
 128                 break;
 129
 130         case LDAP_REQ_DELETE:
 131                 tag = LDAP_RES_DELETE;
 132                 break;
 133
 134         case LDAP_REQ_ABANDON:
 135         case LDAP_REQ_UNBIND:
 136                 tag = LBER_SEQUENCE;
 137                 break;
 138
 139         case LDAP_REQ_SEARCH:
 140                 tag = LDAP_RES_SEARCH_RESULT;
 141                 break;
 142
 143         default:
 144                 tag = LBER_SEQUENCE;
 145         }
 146
 147         return tag;
 148 }
 149
 150 static long send_ldap_ber(
 151         Connection *conn,
 152         BerElement *ber )
 153 {
 154         ber_len_t bytes;
 155
 156         ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
 157
 158         /* write only one pdu at a time - wait til it's our turn */
 159         ldap_pvt_thread_mutex_lock( &conn->c_write_mutex );
 160
 161         /* lock the connection */
 162         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 163
 164         /* write the pdu */
 165         while( 1 ) {
 166                 int err;
 167                 ber_socket_t    sd;
 168
 169                 if ( connection_state_closing( conn ) ) {
 170                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 171                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 172
 173                         return 0;
 174                 }
 175
 176                 if ( ber_flush( conn->c_sb, ber, 0 ) == 0 ) {
 177                         break;
 178                 }
 179
 180                 err = errno;
 181
 182                 /*
 183                  * we got an error.  if it's ewouldblock, we need to
 184                  * wait on the socket being writable.  otherwise, figure
 185                  * it's a hard error and return.
 186                  */
 187
 188                 Debug( LDAP_DEBUG_CONNS, "ber_flush failed errno=%d reason=\"%s\"\n",
 189                     err, sock_errstr(err), 0 );
 190
 191                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 192                         connection_closing( conn, "connection lost on write" );
 193
 194                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 195                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 196
 197                         return( -1 );
 198                 }
 199
 200                 /* wait for socket to be write-ready */
 201                 conn->c_writewaiter = 1;
 202                 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
 203                 slapd_set_write( sd, 1 );
 204
 205                 ldap_pvt_thread_cond_wait( &conn->c_write_cv, &conn->c_mutex );
 206                 conn->c_writewaiter = 0;
 207         }
 208
 209         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 210         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 211
 212         return bytes;
 213 }
 214
 215 static int
 216 send_ldap_control( BerElement *ber, LDAPControl *c )
 217 {
 218         int rc;
 219
 220         assert( c != NULL );
 221
 222         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 223
 224         if( c->ldctl_iscritical ) {
 225                 rc = ber_printf( ber, "b",
 226                         (ber_int_t) c->ldctl_iscritical ) ;
 227                 if( rc == -1 ) return rc;
 228         }
 229
 230         if( c->ldctl_value.bv_val != NULL ) {
 231                 rc = ber_printf( ber, "O", &c->ldctl_value );
 232                 if( rc == -1 ) return rc;
 233         }
 234
 235         rc = ber_printf( ber, /*{*/"N}" );
 236         if( rc == -1 ) return rc;
 237
 238         return 0;
 239 }
 240
 241 static int
 242 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 243 {
 244         int rc;
 245
 246         if( c == NULL )
 247                 return 0;
 248
 249         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 250         if( rc == -1 ) return rc;
 251
 252         for( ; *c != NULL; c++) {
 253                 rc = send_ldap_control( ber, *c );
 254                 if( rc == -1 ) return rc;
 255         }
 256
 257 #ifdef LDAP_DEVEL
 258         /* this is a hack to avoid having to modify op->s_ctrls */
 259         if( o->o_sortedresults ) {
 260                 BerElementBuffer berbuf;
 261                 BerElement *sber = (BerElement *) &berbuf;
 262                 LDAPControl sorted;
 263                 BER_BVZERO( &sorted.ldctl_value );
 264                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 265                 sorted.ldctl_iscritical = 0;
 266
 267                 ber_init2( sber, NULL, LBER_USE_DER );
 268
 269                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 270
 271                 if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
 272                         return -1;
 273                 }
 274
 275                 (void) ber_free_buf( ber );
 276
 277                 rc = send_ldap_control( ber, &sorted );
 278                 if( rc == -1 ) return rc;
 279         }
 280 #endif
 281
 282         rc = ber_printf( ber, /*{*/"N}" );
 283
 284         return rc;
 285 }
 286
 287 static int
 288 send_ldap_response(
 289         Operation *op,
 290         SlapReply *rs )
 291 {
 292         BerElementBuffer berbuf;
 293         BerElement      *ber = (BerElement *) &berbuf;
 294         int             rc = LDAP_SUCCESS;
 295         long    bytes;
 296
 297         if ( rs->sr_err == SLAPD_ABANDON ) {
 298                 rc = SLAPD_ABANDON;
 299                 goto clean2;
 300         }
 301
 302         if ( op->o_callback ) {
 303                 slap_callback   *sc = op->o_callback, **sc_prev = &op->o_callback,
 304                         *sc_next;
 305
 306                 rc = SLAP_CB_CONTINUE;
 307                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
 308                         sc_next = op->o_callback->sc_next;
 309                         if ( op->o_callback->sc_response ) {
 310                                 rc = op->o_callback->sc_response( op, rs );
 311                                 if ( op->o_callback != *sc_prev ) {
 312                                         *sc_prev = op->o_callback;
 313                                 }
 314                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
 315                         }
 316                         sc_prev = &op->o_callback->sc_next;
 317                 }
 318
 319                 op->o_callback = sc;
 320                 if ( rc != SLAP_CB_CONTINUE ) goto clean2;
 321         }
 322
 323 #ifdef LDAP_CONNECTIONLESS
 324         if (op->o_conn && op->o_conn->c_is_udp)
 325                 ber = op->o_res_ber;
 326         else
 327 #endif
 328         {
 329                 ber_init_w_nullc( ber, LBER_USE_DER );
 330                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 331         }
 332
 333         Debug( LDAP_DEBUG_TRACE,
 334                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 335                 rs->sr_msgid, rs->sr_tag, rs->sr_err );
 336
 337         if( rs->sr_ref ) {
 338                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 339                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 340                         NULL, NULL );
 341         }
 342
 343 #ifdef LDAP_CONNECTIONLESS
 344         if (op->o_conn && op->o_conn->c_is_udp &&
 345                 op->o_protocol == LDAP_VERSION2 )
 346         {
 347                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 348                         rs->sr_tag, rs->sr_err,
 349                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 350                 rs->sr_text == NULL ? "" : rs->sr_text );
 351         } else
 352 #endif
 353         if ( rs->sr_type == REP_INTERMEDIATE ) {
 354             rc = ber_printf( ber, "{it{" /*"}}"*/,
 355                         rs->sr_msgid, rs->sr_tag );
 356
 357         } else {
 358             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 359                 rs->sr_msgid, rs->sr_tag, rs->sr_err,
 360                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 361                 rs->sr_text == NULL ? "" : rs->sr_text );
 362         }
 363
 364         if( rc != -1 ) {
 365                 if ( rs->sr_ref != NULL ) {
 366                         assert( rs->sr_err == LDAP_REFERRAL );
 367                         rc = ber_printf( ber, "t{W}",
 368                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 369                 } else {
 370                         assert( rs->sr_err != LDAP_REFERRAL );
 371                 }
 372         }
 373
 374         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 375                 rc = ber_printf( ber, "tO",
 376                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 377         }
 378
 379         if( rc != -1 &&
 380                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 381         {
 382                 if ( rs->sr_rspoid != NULL ) {
 383                         rc = ber_printf( ber, "ts",
 384                                 rs->sr_type == REP_EXTENDED
 385                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 386                                 rs->sr_rspoid );
 387                 }
 388                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 389                         rc = ber_printf( ber, "tO",
 390                                 rs->sr_type == REP_EXTENDED
 391                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 392                                 rs->sr_rspdata );
 393                 }
 394         }
 395
 396         if( rc != -1 ) {
 397                 rc = ber_printf( ber, /*"{"*/ "N}" );
 398         }
 399
 400         if( rc != -1 ) {
 401                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 402         }
 403
 404         if( rc != -1 ) {
 405                 rc = ber_printf( ber, /*"{"*/ "N}" );
 406         }
 407
 408 #ifdef LDAP_CONNECTIONLESS
 409         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 410                 && rc != -1 )
 411         {
 412                 rc = ber_printf( ber, /*"{"*/ "N}" );
 413         }
 414 #endif
 415
 416         if ( rc == -1 ) {
 417                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 418
 419 #ifdef LDAP_CONNECTIONLESS
 420                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 421 #endif
 422                 {
 423                         ber_free_buf( ber );
 424                 }
 425                 goto cleanup;
 426         }
 427
 428         /* send BER */
 429         bytes = send_ldap_ber( op->o_conn, ber );
 430 #ifdef LDAP_CONNECTIONLESS
 431         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 432 #endif
 433         {
 434                 ber_free_buf( ber );
 435         }
 436
 437         if ( bytes < 0 ) {
 438                 Debug( LDAP_DEBUG_ANY,
 439                         "send_ldap_response: ber write failed\n",
 440                         0, 0, 0 );
 441
 442                 goto cleanup;
 443         }
 444
 445         ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
 446         ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
 447         ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
 448         ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
 449
 450 cleanup:;
 451         /* Tell caller that we did this for real, as opposed to being
 452          * overridden by a callback
 453          */
 454         rc = SLAP_CB_CONTINUE;
 455
 456 clean2:;
 457         if ( op->o_callback ) {
 458                 slap_callback   *sc = op->o_callback, **sc_prev = &op->o_callback,
 459                         *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 = req2res( op->o_tag );
 509                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 510
 511         } else {
 512                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 513                 rs->sr_tag = LDAP_RES_EXTENDED;
 514                 rs->sr_msgid = 0;
 515         }
 516
 517         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 518                 Statslog( LDAP_DEBUG_STATS,
 519                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 520                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 521                         rs->sr_text ? rs->sr_text : "", 0 );
 522         }
 523 }
 524
 525 void
 526 slap_send_ldap_result( Operation *op, SlapReply *rs )
 527 {
 528         char *tmp = NULL;
 529         const char *otext = rs->sr_text;
 530         BerVarray oref = rs->sr_ref;
 531
 532         rs->sr_type = REP_RESULT;
 533
 534         /* Propagate Abandons so that cleanup callbacks can be processed */
 535         if ( rs->sr_err == SLAPD_ABANDON )
 536                 goto abandon;
 537
 538         assert( !LDAP_API_ERROR( rs->sr_err ) );
 539
 540         Debug( LDAP_DEBUG_TRACE,
 541                 "send_ldap_result: %s p=%d\n",
 542                 op->o_log_prefix, op->o_protocol, 0 );
 543
 544         Debug( LDAP_DEBUG_ARGS,
 545                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 546                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 547                 rs->sr_text ? rs->sr_text : "" );
 548
 549
 550         if( rs->sr_ref ) {
 551                 Debug( LDAP_DEBUG_ARGS,
 552                         "send_ldap_result: referral=\"%s\"\n",
 553                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 554                         NULL, NULL );
 555         }
 556
 557         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 558
 559         if ( rs->sr_err == LDAP_REFERRAL ) {
 560 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 561                 if( op->o_domain_scope ) {
 562                         rs->sr_ref = NULL;
 563                 }
 564 #endif
 565                 if( rs->sr_ref == NULL ) {
 566                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 567                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 568                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 569                 }
 570         }
 571
 572         if ( op->o_protocol < LDAP_VERSION3 ) {
 573                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 574                 rs->sr_text = tmp;
 575                 rs->sr_ref = NULL;
 576         }
 577
 578         rs->sr_tag = req2res( op->o_tag );
 579         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 580
 581 abandon:
 582         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 583                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 584                         char nbuf[64];
 585                         snprintf( nbuf, sizeof nbuf, "%d nentries=%d",
 586                                 rs->sr_err, rs->sr_nentries );
 587
 588                         Statslog( LDAP_DEBUG_STATS,
 589                         "%s SEARCH RESULT tag=%lu err=%s text=%s\n",
 590                                 op->o_log_prefix, rs->sr_tag, nbuf,
 591                                 rs->sr_text ? rs->sr_text : "", 0 );
 592                 } else {
 593                         Statslog( LDAP_DEBUG_STATS,
 594                                 "%s RESULT tag=%lu err=%d text=%s\n",
 595                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 596                                 rs->sr_text ? rs->sr_text : "", 0 );
 597                 }
 598         }
 599
 600         if( tmp != NULL ) ch_free(tmp);
 601         rs->sr_text = otext;
 602         rs->sr_ref = oref;
 603 }
 604
 605 void
 606 send_ldap_sasl( Operation *op, SlapReply *rs )
 607 {
 608         rs->sr_type = REP_SASL;
 609         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 610                 rs->sr_err,
 611                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 612
 613         rs->sr_tag = req2res( op->o_tag );
 614         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 615
 616         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 = 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 int
 666 slap_send_search_entry( Operation *op, SlapReply *rs )
 667 {
 668         BerElementBuffer berbuf;
 669         BerElement      *ber = (BerElement *) &berbuf;
 670         Attribute       *a;
 671         int             i, j, rc=-1, bytes;
 672         char            *edn;
 673         int             userattrs;
 674         AccessControlState acl_state = ACL_STATE_INIT;
 675         int                      attrsonly;
 676         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 677
 678         /* a_flags: array of flags telling if the i-th element will be
 679          *          returned or filtered out
 680          * e_flags: array of a_flags
 681          */
 682         char **e_flags = NULL;
 683
 684         rs->sr_type = REP_SEARCH;
 685
 686         /* eventually will loop through generated operational attribute types
 687          * currently implemented types include:
 688          *      entryDN, subschemaSubentry, and hasSubordinates */
 689         /* NOTE: moved before overlays callback circling because
 690          * they may modify entry and other stuff in rs */
 691         /* check for special all operational attributes ("+") type */
 692         /* FIXME: maybe we could se this flag at the operation level;
 693          * however, in principle the caller of send_search_entry() may
 694          * change the attribute list at each call */
 695         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 696
 697         rc = backend_operational( op, rs );
 698         if ( rc ) {
 699                 goto error_return;
 700         }
 701
 702         if ( op->o_callback ) {
 703                 slap_callback   *sc = op->o_callback, **sc_prev = &op->o_callback,
 704                         *sc_next;
 705
 706                 rc = SLAP_CB_CONTINUE;
 707                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next )
 708                 {
 709                         sc_next = op->o_callback->sc_next;
 710                         if ( op->o_callback->sc_response ) {
 711                                 rc = op->o_callback->sc_response( op, rs );
 712                                 if ( op->o_callback != *sc_prev ) {
 713                                         *sc_prev = op->o_callback;
 714                                 }
 715                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
 716                         }
 717                         sc_prev = &op->o_callback->sc_next;
 718                 }
 719
 720                 op->o_callback = sc;
 721                 if ( rc != SLAP_CB_CONTINUE ) goto error_return;
 722         }
 723
 724         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 725                 op->o_connid, rs->sr_entry->e_name.bv_val,
 726                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 727
 728         attrsonly = op->ors_attrsonly;
 729
 730         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 731                 Debug( LDAP_DEBUG_ACL,
 732                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 733                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 734
 735                 rc = 1;
 736                 goto error_return;
 737         }
 738
 739         edn = rs->sr_entry->e_nname.bv_val;
 740
 741         if ( op->o_res_ber ) {
 742                 /* read back control or LDAP_CONNECTIONLESS */
 743             ber = op->o_res_ber;
 744         } else {
 745                 struct berval   bv;
 746
 747                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 748                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 749
 750                 ber_init2( ber, &bv, LBER_USE_DER );
 751                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 752         }
 753
 754 #ifdef LDAP_CONNECTIONLESS
 755         if ( op->o_conn && op->o_conn->c_is_udp ) {
 756                 /* CONNECTIONLESS */
 757                 if ( op->o_protocol == LDAP_VERSION2 ) {
 758                 rc = ber_printf(ber, "t{O{" /*}}*/,
 759                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 760                 } else {
 761                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 762                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 763                 }
 764         } else
 765 #endif
 766         if ( op->o_res_ber ) {
 767                 /* read back control */
 768             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 769         } else {
 770             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 771                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 772         }
 773
 774         if ( rc == -1 ) {
 775                 Debug( LDAP_DEBUG_ANY,
 776                         "send_search_entry: conn %lu  ber_printf failed\n",
 777                         op->o_connid, 0, 0 );
 778
 779                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 780                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 781                 goto error_return;
 782         }
 783
 784         /* check for special all user attributes ("*") type */
 785         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 786
 787         /* create an array of arrays of flags. Each flag corresponds
 788          * to particular value of attribute and equals 1 if value matches
 789          * to ValuesReturnFilter or 0 if not
 790          */
 791         if ( op->o_vrFilter != NULL ) {
 792                 int     k = 0;
 793                 size_t  size;
 794
 795                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 796                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 797                 }
 798
 799                 size = i * sizeof(char *) + k;
 800                 if ( size > 0 ) {
 801                         char    *a_flags;
 802                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 803                         if( e_flags == NULL ) {
 804                         Debug( LDAP_DEBUG_ANY,
 805                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 806                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 807                                 ber_free( ber, 1 );
 808
 809                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 810                                 goto error_return;
 811                         }
 812                         a_flags = (char *)(e_flags + i);
 813                         memset( a_flags, 0, k );
 814                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 815                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 816                                 e_flags[i] = a_flags;
 817                                 a_flags += j;
 818                         }
 819
 820                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 821                         if ( rc == -1 ) {
 822                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 823                                         "conn %lu matched values filtering failed\n",
 824                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 825                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 826                                 send_ldap_error( op, rs, LDAP_OTHER,
 827                                         "matched values filtering error" );
 828                                 goto error_return;
 829                         }
 830                 }
 831         }
 832
 833         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 834                 AttributeDescription *desc = a->a_desc;
 835                 int finish = 0;
 836
 837                 if ( rs->sr_attrs == NULL ) {
 838                         /* all user attrs request, skip operational attributes */
 839                         if( is_at_operational( desc->ad_type ) ) {
 840                                 continue;
 841                         }
 842
 843                 } else {
 844                         /* specific attrs requested */
 845                         if ( is_at_operational( desc->ad_type ) ) {
 846                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
 847                                         !ad_inlist( desc, rs->sr_attrs ) )
 848                                 {
 849                                         continue;
 850                                 }
 851
 852                         } else {
 853                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 854                                         continue;
 855                                 }
 856                         }
 857                 }
 858
 859                 if ( attrsonly ) {
 860                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 861                                 ACL_READ, &acl_state ) )
 862                         {
 863                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 864                                         "conn %lu access to attribute %s not allowed\n",
 865                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 866                                 continue;
 867                         }
 868
 869                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 870                                 Debug( LDAP_DEBUG_ANY,
 871                                         "send_search_entry: conn %lu  ber_printf failed\n",
 872                                         op->o_connid, 0, 0 );
 873
 874                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 875                                 send_ldap_error( op, rs, LDAP_OTHER,
 876                                         "encoding description error");
 877                                 goto error_return;
 878                         }
 879                         finish = 1;
 880
 881                 } else {
 882                         int first = 1;
 883                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
 884                                 if ( ! access_allowed( op, rs->sr_entry,
 885                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
 886                                 {
 887                                         Debug( LDAP_DEBUG_ACL,
 888                                                 "send_search_entry: conn %lu "
 889                                                 "access to attribute %s, value #%d not allowed\n",
 890                                                 op->o_connid, desc->ad_cname.bv_val, i );
 891
 892                                         continue;
 893                                 }
 894
 895                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
 896                                         continue;
 897                                 }
 898
 899                                 if ( first ) {
 900                                         first = 0;
 901                                         finish = 1;
 902                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 903                                                 Debug( LDAP_DEBUG_ANY,
 904                                                         "send_search_entry: conn %lu  ber_printf failed\n",
 905                                                         op->o_connid, 0, 0 );
 906
 907                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 908                                                 send_ldap_error( op, rs, LDAP_OTHER,
 909                                                         "encoding description error");
 910                                                 goto error_return;
 911                                         }
 912                                 }
 913                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
 914                                         Debug( LDAP_DEBUG_ANY,
 915                                                 "send_search_entry: conn %lu  "
 916                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
 917
 918                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 919                                         send_ldap_error( op, rs, LDAP_OTHER,
 920                                                 "encoding values error" );
 921                                         goto error_return;
 922                                 }
 923                         }
 924                 }
 925
 926                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
 927                         Debug( LDAP_DEBUG_ANY,
 928                                 "send_search_entry: conn %lu ber_printf failed\n",
 929                                 op->o_connid, 0, 0 );
 930
 931                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 932                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
 933                         goto error_return;
 934                 }
 935         }
 936
 937         /* NOTE: moved before overlays callback circling because
 938          * they may modify entry and other stuff in rs */
 939         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
 940                 int     k = 0;
 941                 size_t  size;
 942
 943                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 944                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 945                 }
 946
 947                 size = i * sizeof(char *) + k;
 948                 if ( size > 0 ) {
 949                         char    *a_flags, **tmp;
 950
 951                         /*
 952                          * Reuse previous memory - we likely need less space
 953                          * for operational attributes
 954                          */
 955                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
 956                                 op->o_tmpmemctx );
 957                         if ( tmp == NULL ) {
 958                                 Debug( LDAP_DEBUG_ANY,
 959                                         "send_search_entry: conn %lu "
 960                                         "not enough memory "
 961                                         "for matched values filtering\n",
 962                                         op->o_connid, 0, 0 );
 963                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 964                                 send_ldap_error( op, rs, LDAP_OTHER,
 965                                         "not enough memory for matched values filtering" );
 966                                 goto error_return;
 967                         }
 968                         e_flags = tmp;
 969                         a_flags = (char *)(e_flags + i);
 970                         memset( a_flags, 0, k );
 971                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 972                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 973                                 e_flags[i] = a_flags;
 974                                 a_flags += j;
 975                         }
 976                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
 977
 978                         if ( rc == -1 ) {
 979                                 Debug( LDAP_DEBUG_ANY,
 980                                         "send_search_entry: conn %lu "
 981                                         "matched values filtering failed\n",
 982                                         op->o_connid ? op->o_connid : 0, 0, 0);
 983                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 984                                 send_ldap_error( op, rs, LDAP_OTHER,
 985                                         "matched values filtering error" );
 986                                 goto error_return;
 987                         }
 988                 }
 989         }
 990
 991         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
 992                 AttributeDescription *desc = a->a_desc;
 993
 994                 if ( rs->sr_attrs == NULL ) {
 995                         /* all user attrs request, skip operational attributes */
 996                         if( is_at_operational( desc->ad_type ) ) {
 997                                 continue;
 998                         }
 999
1000                 } else {
1001                         /* specific attrs requested */
1002                         if( is_at_operational( desc->ad_type ) ) {
1003                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1004                                         !ad_inlist( desc, rs->sr_attrs ) )
1005                                 {
1006                                         continue;
1007                                 }
1008                         } else {
1009                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1010                                         continue;
1011                                 }
1012                         }
1013                 }
1014
1015                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1016                         ACL_READ, &acl_state ) )
1017                 {
1018                         Debug( LDAP_DEBUG_ACL,
1019                                 "send_search_entry: conn %lu "
1020                                 "access to attribute %s not allowed\n",
1021                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1022
1023                         continue;
1024                 }
1025
1026                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1027                 if ( rc == -1 ) {
1028                         Debug( LDAP_DEBUG_ANY,
1029                                 "send_search_entry: conn %lu  "
1030                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1031
1032                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1033                         send_ldap_error( op, rs, LDAP_OTHER,
1034                                 "encoding description error" );
1035                         goto error_return;
1036                 }
1037
1038                 if ( ! attrsonly ) {
1039                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1040                                 if ( ! access_allowed( op, rs->sr_entry,
1041                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1042                                 {
1043                                         Debug( LDAP_DEBUG_ACL,
1044                                                 "send_search_entry: conn %lu "
1045                                                 "access to %s, value %d not allowed\n",
1046                                                 op->o_connid, desc->ad_cname.bv_val, i );
1047
1048                                         continue;
1049                                 }
1050
1051                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1052                                         continue;
1053                                 }
1054
1055                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1056                                         Debug( LDAP_DEBUG_ANY,
1057                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1058                                                 op->o_connid, 0, 0 );
1059
1060                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1061                                         send_ldap_error( op, rs, LDAP_OTHER,
1062                                                 "encoding values error" );
1063                                         goto error_return;
1064                                 }
1065                         }
1066                 }
1067
1068                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1069                         Debug( LDAP_DEBUG_ANY,
1070                                 "send_search_entry: conn %lu  ber_printf failed\n",
1071                                 op->o_connid, 0, 0 );
1072
1073                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1074                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1075                         goto error_return;
1076                 }
1077         }
1078
1079         /* free e_flags */
1080         if ( e_flags ) {
1081                 slap_sl_free( e_flags, op->o_tmpmemctx );
1082                 e_flags = NULL;
1083         }
1084
1085         rc = ber_printf( ber, /*{{*/ "}N}" );
1086
1087         if( rc != -1 ) {
1088                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1089         }
1090
1091         if( rc != -1 ) {
1092 #ifdef LDAP_CONNECTIONLESS
1093                 if( op->o_conn && op->o_conn->c_is_udp ) {
1094                         if ( op->o_protocol != LDAP_VERSION2 ) {
1095                                 rc = ber_printf( ber, /*{*/ "N}" );
1096                         }
1097                 } else
1098 #endif
1099                 if ( op->o_res_ber == NULL ) {
1100                         rc = ber_printf( ber, /*{*/ "N}" );
1101                 }
1102         }
1103
1104         if ( rc == -1 ) {
1105                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1106
1107                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1108                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1109                 rc = 1;
1110                 goto error_return;
1111         }
1112
1113         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1114                 be_entry_release_rw( op, rs->sr_entry, 0 );
1115                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1116                 rs->sr_entry = NULL;
1117         }
1118
1119         if ( op->o_res_ber == NULL ) {
1120                 bytes = send_ldap_ber( op->o_conn, ber );
1121                 ber_free_buf( ber );
1122
1123                 if ( bytes < 0 ) {
1124                         Debug( LDAP_DEBUG_ANY,
1125                                 "send_search_entry: conn %lu  ber write failed.\n",
1126                                 op->o_connid, 0, 0 );
1127
1128                         rc = -1;
1129                         goto error_return;
1130                 }
1131                 rs->sr_nentries++;
1132
1133                 ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
1134                 ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1135                 ldap_pvt_mp_add_ulong( slap_counters.sc_entries, 1 );
1136                 ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1137                 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
1138         }
1139
1140         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1141             op->o_log_prefix, edn, 0, 0, 0 );
1142
1143         Debug( LDAP_DEBUG_TRACE,
1144                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1145
1146         rc = 0;
1147
1148 error_return:;
1149         if ( op->o_callback ) {
1150                 slap_callback   *sc = op->o_callback, **sc_prev = &op->o_callback,
1151                         *sc_next;
1152
1153                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1154                         sc_next = op->o_callback->sc_next;
1155                         if ( op->o_callback->sc_cleanup ) {
1156                                 (void)op->o_callback->sc_cleanup( op, rs );
1157                                 if ( op->o_callback != *sc_prev ) {
1158                                         *sc_prev = op->o_callback;
1159                                 }
1160                                 if ( !op->o_callback ) break;
1161                         }
1162                         sc_prev = &op->o_callback->sc_next;
1163                 }
1164                 op->o_callback = sc;
1165         }
1166
1167         if ( e_flags ) {
1168                 slap_sl_free( e_flags, op->o_tmpmemctx );
1169         }
1170
1171         if ( rs->sr_operational_attrs ) {
1172                 attrs_free( rs->sr_operational_attrs );
1173                 rs->sr_operational_attrs = NULL;
1174         }
1175         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1176
1177         /* FIXME: I think rs->sr_type should be explicitly set to
1178          * REP_SEARCH here. That's what it was when we entered this
1179          * function. send_ldap_error may have changed it, but we
1180          * should set it back so that the cleanup functions know
1181          * what they're doing.
1182          */
1183         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1184                 && rs->sr_entry
1185                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1186         {
1187                 entry_free( rs->sr_entry );
1188                 rs->sr_entry = NULL;
1189                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1190         }
1191
1192         return( rc );
1193 }
1194
1195 int
1196 slap_send_search_reference( Operation *op, SlapReply *rs )
1197 {
1198         BerElementBuffer berbuf;
1199         BerElement      *ber = (BerElement *) &berbuf;
1200         int rc = 0;
1201         int bytes;
1202
1203         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1204         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1205
1206         rs->sr_type = REP_SEARCHREF;
1207         if ( op->o_callback ) {
1208                 slap_callback   *sc = op->o_callback, **sc_prev = &op->o_callback,
1209                         *sc_next;
1210
1211                 rc = SLAP_CB_CONTINUE;
1212                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1213                         sc_next = op->o_callback->sc_next;
1214                         if ( op->o_callback->sc_response ) {
1215                                 rc = op->o_callback->sc_response( op, rs );
1216                                 if ( op->o_callback != *sc_prev ) {
1217                                         *sc_prev = op->o_callback;
1218                                 }
1219                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
1220                         }
1221                         sc_prev = &op->o_callback->sc_next;
1222                 }
1223
1224                 op->o_callback = sc;
1225                 if ( rc != SLAP_CB_CONTINUE ) goto rel;
1226         }
1227
1228         Debug( LDAP_DEBUG_TRACE,
1229                 "=> send_search_reference: dn=\"%s\"\n",
1230                 rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)", 0, 0 );
1231
1232         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1233                 ad_entry, NULL, ACL_READ, NULL ) )
1234         {
1235                 Debug( LDAP_DEBUG_ACL,
1236                         "send_search_reference: access to entry not allowed\n",
1237                     0, 0, 0 );
1238                 rc = 1;
1239                 goto rel;
1240         }
1241
1242         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1243                 ad_ref, NULL, ACL_READ, NULL ) )
1244         {
1245                 Debug( LDAP_DEBUG_ACL,
1246                         "send_search_reference: access "
1247                         "to reference not allowed\n",
1248                     0, 0, 0 );
1249                 rc = 1;
1250                 goto rel;
1251         }
1252
1253 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
1254         if( op->o_domain_scope ) {
1255                 Debug( LDAP_DEBUG_ANY,
1256                         "send_search_reference: domainScope control in (%s)\n",
1257                         rs->sr_entry->e_dn, 0, 0 );
1258                 rc = 0;
1259                 goto rel;
1260         }
1261 #endif
1262
1263         if( rs->sr_ref == NULL ) {
1264                 Debug( LDAP_DEBUG_ANY,
1265                         "send_search_reference: null ref in (%s)\n",
1266                         rs->sr_entry ? rs->sr_entry->e_dn : "(null)", 0, 0 );
1267                 rc = 1;
1268                 goto rel;
1269         }
1270
1271         if( op->o_protocol < LDAP_VERSION3 ) {
1272                 rc = 0;
1273                 /* save the references for the result */
1274                 if( rs->sr_ref[0].bv_val != NULL ) {
1275                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1276                                 rc = LDAP_OTHER;
1277                 }
1278                 goto rel;
1279         }
1280
1281 #ifdef LDAP_CONNECTIONLESS
1282         if( op->o_conn && op->o_conn->c_is_udp ) {
1283                 ber = op->o_res_ber;
1284         } else
1285 #endif
1286         {
1287                 ber_init_w_nullc( ber, LBER_USE_DER );
1288                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1289         }
1290
1291         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1292                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1293
1294         if( rc != -1 ) {
1295                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1296         }
1297
1298         if( rc != -1 ) {
1299                 rc = ber_printf( ber, /*"{"*/ "N}" );
1300         }
1301
1302         if ( rc == -1 ) {
1303                 Debug( LDAP_DEBUG_ANY,
1304                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1305
1306 #ifdef LDAP_CONNECTIONLESS
1307                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1308 #endif
1309                 ber_free_buf( ber );
1310                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1311                 goto rel;
1312         }
1313
1314         rc = 0;
1315         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1316                 be_entry_release_rw( op, rs->sr_entry, 0 );
1317                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1318                 rs->sr_entry = NULL;
1319         }
1320
1321 #ifdef LDAP_CONNECTIONLESS
1322         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1323 #endif
1324         bytes = send_ldap_ber( op->o_conn, ber );
1325         ber_free_buf( ber );
1326
1327         ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex );
1328         ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1329         ldap_pvt_mp_add_ulong( slap_counters.sc_refs, 1 );
1330         ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1331         ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex );
1332 #ifdef LDAP_CONNECTIONLESS
1333         }
1334 #endif
1335         if ( rs->sr_ref != NULL ) {
1336                 int     r;
1337
1338                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1339                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1340                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1341                                 0, 0 );
1342                 }
1343
1344         } else {
1345                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1346                         op->o_log_prefix, 0, 0, 0, 0 );
1347         }
1348
1349         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1350
1351 rel:
1352         if ( op->o_callback ) {
1353                 slap_callback   *sc = op->o_callback, **sc_prev = &op->o_callback,
1354                         *sc_next;
1355
1356                 for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
1357                         sc_next = op->o_callback->sc_next;
1358                         if ( op->o_callback->sc_cleanup ) {
1359                                 (void)op->o_callback->sc_cleanup( op, rs );
1360                                 if ( op->o_callback != *sc_prev ) {
1361                                         *sc_prev = op->o_callback;
1362                                 }
1363                                 if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
1364                         }
1365                         sc_prev = &op->o_callback->sc_next;
1366                 }
1367                 op->o_callback = sc;
1368         }
1369
1370         return rc;
1371 }
1372
1373 int
1374 str2result(
1375     char        *s,
1376     int         *code,
1377     char        **matched,
1378     char        **info )
1379 {
1380         int     rc;
1381         char    *c;
1382
1383         *code = LDAP_SUCCESS;
1384         *matched = NULL;
1385         *info = NULL;
1386
1387         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1388                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1389                     s, 0, 0 );
1390
1391                 return( -1 );
1392         }
1393
1394         rc = 0;
1395         while ( (s = strchr( s, '\n' )) != NULL ) {
1396                 *s++ = '\0';
1397                 if ( *s == '\0' ) {
1398                         break;
1399                 }
1400                 if ( (c = strchr( s, ':' )) != NULL ) {
1401                         c++;
1402                 }
1403
1404                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1405                         if ( c != NULL ) {
1406                                 *code = atoi( c );
1407                         }
1408                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1409                         if ( c != NULL ) {
1410                                 *matched = c;
1411                         }
1412                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1413                         if ( c != NULL ) {
1414                                 *info = c;
1415                         }
1416                 } else {
1417                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1418                             s, 0, 0 );
1419
1420                         rc = -1;
1421                 }
1422         }
1423
1424         return( rc );
1425 }
1426
1427 int slap_read_controls(
1428         Operation *op,
1429         SlapReply *rs,
1430         Entry *e,
1431         const struct berval *oid,
1432         LDAPControl **ctrl )
1433 {
1434         int rc;
1435         struct berval bv;
1436         BerElementBuffer berbuf;
1437         BerElement *ber = (BerElement *) &berbuf;
1438         LDAPControl c;
1439         Operation myop;
1440
1441         Debug( LDAP_DEBUG_ANY, "slap_read_controls: (%s) %s\n",
1442                 oid->bv_val, e->e_dn, 0 );
1443
1444         rs->sr_entry = e;
1445         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1446                 op->o_preread_attrs : op->o_postread_attrs;
1447
1448         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1449         bv.bv_val = op->o_tmpalloc(bv.bv_len, op->o_tmpmemctx );
1450
1451         ber_init2( ber, &bv, LBER_USE_DER );
1452         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1453
1454         /* create new operation */
1455         myop = *op;
1456         myop.o_bd = NULL;
1457         myop.o_res_ber = ber;
1458         myop.o_callback = NULL;
1459
1460         rc = slap_send_search_entry( &myop, rs );
1461         if( rc ) return rc;
1462
1463         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1464
1465         if( rc == LBER_ERROR ) return LDAP_OTHER;
1466
1467         c.ldctl_oid = oid->bv_val;
1468         c.ldctl_iscritical = 0;
1469
1470         if ( *ctrl == NULL ) {
1471                 /* first try */
1472                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1473         } else {
1474                 /* retry: free previous try */
1475                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1476         }
1477
1478         **ctrl = c;
1479         return LDAP_SUCCESS;
1480 }
1481
1482 /* Map API errors to protocol errors... */
1483 int
1484 slap_map_api2result( SlapReply *rs )
1485 {
1486         switch(rs->sr_err) {
1487         case LDAP_SERVER_DOWN:
1488                 return LDAP_UNAVAILABLE;
1489         case LDAP_LOCAL_ERROR:
1490                 return LDAP_OTHER;
1491         case LDAP_ENCODING_ERROR:
1492         case LDAP_DECODING_ERROR:
1493                 return LDAP_PROTOCOL_ERROR;
1494         case LDAP_TIMEOUT:
1495                 return LDAP_UNAVAILABLE;
1496         case LDAP_AUTH_UNKNOWN:
1497                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1498         case LDAP_FILTER_ERROR:
1499                 rs->sr_text = "Filter error";
1500                 return LDAP_OTHER;
1501         case LDAP_USER_CANCELLED:
1502                 rs->sr_text = "User cancelled";
1503                 return LDAP_OTHER;
1504         case LDAP_PARAM_ERROR:
1505                 return LDAP_PROTOCOL_ERROR;
1506         case LDAP_NO_MEMORY:
1507                 return LDAP_OTHER;
1508         case LDAP_CONNECT_ERROR:
1509                 return LDAP_UNAVAILABLE;
1510         case LDAP_NOT_SUPPORTED:
1511                 return LDAP_UNWILLING_TO_PERFORM;
1512         case LDAP_CONTROL_NOT_FOUND:
1513                 return LDAP_PROTOCOL_ERROR;
1514         case LDAP_NO_RESULTS_RETURNED:
1515                 return LDAP_NO_SUCH_OBJECT;
1516         case LDAP_MORE_RESULTS_TO_RETURN:
1517                 rs->sr_text = "More results to return";
1518                 return LDAP_OTHER;
1519         case LDAP_CLIENT_LOOP:
1520         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1521                 return LDAP_LOOP_DETECT;
1522         default:
1523                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1524                 return rs->sr_err;
1525         }
1526 }
1527
1528
1529 slap_mask_t
1530 slap_attr_flags( AttributeName *an )
1531 {
1532         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1533
1534         if ( an == NULL ) {
1535                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1536
1537         } else {
1538                 flags |= an_find( an, &AllOper )
1539                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1540                 flags |= an_find( an, &AllUser )
1541                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1542         }
1543
1544         return flags;
1545 }
1546