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 1998-2007 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 static char *v2ref( BerVarray ref, const char *text )
  58 {
  59         size_t len = 0, i = 0;
  60         char *v2;
  61
  62         if(ref == NULL) {
  63                 if (text) {
  64                         return ch_strdup(text);
  65                 } else {
  66                         return NULL;
  67                 }
  68         }
  69
  70         if ( text != NULL ) {
  71                 len = strlen( text );
  72                 if (text[len-1] != '\n') {
  73                     i = 1;
  74                 }
  75         }
  76
  77         v2 = ch_malloc( len+i+sizeof("Referral:") );
  78
  79         if( text != NULL ) {
  80                 strcpy(v2, text);
  81                 if( i ) {
  82                         v2[len++] = '\n';
  83                 }
  84         }
  85         strcpy( v2+len, "Referral:" );
  86         len += sizeof("Referral:");
  87
  88         for( i=0; ref[i].bv_val != NULL; i++ ) {
  89                 v2 = ch_realloc( v2, len + ref[i].bv_len + 1 );
  90                 v2[len-1] = '\n';
  91                 AC_MEMCPY(&v2[len], ref[i].bv_val, ref[i].bv_len );
  92                 len += ref[i].bv_len;
  93                 if (ref[i].bv_val[ref[i].bv_len-1] != '/') {
  94                         ++len;
  95                 }
  96         }
  97
  98         v2[len-1] = '\0';
  99         return v2;
 100 }
 101
 102 ber_tag_t
 103 slap_req2res( ber_tag_t tag )
 104 {
 105         switch( tag ) {
 106         case LDAP_REQ_ADD:
 107         case LDAP_REQ_BIND:
 108         case LDAP_REQ_COMPARE:
 109         case LDAP_REQ_EXTENDED:
 110         case LDAP_REQ_MODIFY:
 111         case LDAP_REQ_MODRDN:
 112                 tag++;
 113                 break;
 114
 115         case LDAP_REQ_DELETE:
 116                 tag = LDAP_RES_DELETE;
 117                 break;
 118
 119         case LDAP_REQ_ABANDON:
 120         case LDAP_REQ_UNBIND:
 121                 tag = LBER_SEQUENCE;
 122                 break;
 123
 124         case LDAP_REQ_SEARCH:
 125                 tag = LDAP_RES_SEARCH_RESULT;
 126                 break;
 127
 128         default:
 129                 tag = LBER_SEQUENCE;
 130         }
 131
 132         return tag;
 133 }
 134
 135 static long send_ldap_ber(
 136         Connection *conn,
 137         BerElement *ber )
 138 {
 139         ber_len_t bytes;
 140
 141         ber_get_option( ber, LBER_OPT_BER_BYTES_TO_WRITE, &bytes );
 142
 143         /* write only one pdu at a time - wait til it's our turn */
 144         ldap_pvt_thread_mutex_lock( &conn->c_write_mutex );
 145
 146         /* lock the connection */
 147         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 148
 149         /* write the pdu */
 150         while( 1 ) {
 151                 int err;
 152                 ber_socket_t    sd;
 153
 154                 if ( connection_state_closing( conn ) ) {
 155                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 156                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 157
 158                         return 0;
 159                 }
 160
 161                 if ( ber_flush2( conn->c_sb, ber, LBER_FLUSH_FREE_NEVER ) == 0 ) {
 162                         break;
 163                 }
 164
 165                 err = sock_errno();
 166
 167                 /*
 168                  * we got an error.  if it's ewouldblock, we need to
 169                  * wait on the socket being writable.  otherwise, figure
 170                  * it's a hard error and return.
 171                  */
 172
 173                 Debug( LDAP_DEBUG_CONNS, "ber_flush2 failed errno=%d reason=\"%s\"\n",
 174                     err, sock_errstr(err), 0 );
 175
 176                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 177                         connection_closing( conn, "connection lost on write" );
 178
 179                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 180                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 181
 182                         return( -1 );
 183                 }
 184
 185                 /* wait for socket to be write-ready */
 186                 conn->c_writewaiter = 1;
 187                 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
 188                 slapd_set_write( sd, 1 );
 189
 190                 ldap_pvt_thread_cond_wait( &conn->c_write_cv, &conn->c_mutex );
 191                 conn->c_writewaiter = 0;
 192         }
 193
 194         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 195         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 196
 197         return bytes;
 198 }
 199
 200 static int
 201 send_ldap_control( BerElement *ber, LDAPControl *c )
 202 {
 203         int rc;
 204
 205         assert( c != NULL );
 206
 207         rc = ber_printf( ber, "{s" /*}*/, c->ldctl_oid );
 208
 209         if( c->ldctl_iscritical ) {
 210                 rc = ber_printf( ber, "b",
 211                         (ber_int_t) c->ldctl_iscritical ) ;
 212                 if( rc == -1 ) return rc;
 213         }
 214
 215         if( c->ldctl_value.bv_val != NULL ) {
 216                 rc = ber_printf( ber, "O", &c->ldctl_value );
 217                 if( rc == -1 ) return rc;
 218         }
 219
 220         rc = ber_printf( ber, /*{*/"N}" );
 221         if( rc == -1 ) return rc;
 222
 223         return 0;
 224 }
 225
 226 static int
 227 send_ldap_controls( Operation *o, BerElement *ber, LDAPControl **c )
 228 {
 229         int rc;
 230
 231         if( c == NULL )
 232                 return 0;
 233
 234         rc = ber_printf( ber, "t{"/*}*/, LDAP_TAG_CONTROLS );
 235         if( rc == -1 ) return rc;
 236
 237         for( ; *c != NULL; c++) {
 238                 rc = send_ldap_control( ber, *c );
 239                 if( rc == -1 ) return rc;
 240         }
 241
 242 #ifdef SLAP_CONTROL_X_SORTEDRESULTS
 243         /* this is a hack to avoid having to modify op->s_ctrls */
 244         if( o->o_sortedresults ) {
 245                 BerElementBuffer berbuf;
 246                 BerElement *sber = (BerElement *) &berbuf;
 247                 LDAPControl sorted;
 248                 BER_BVZERO( &sorted.ldctl_value );
 249                 sorted.ldctl_oid = LDAP_CONTROL_SORTRESPONSE;
 250                 sorted.ldctl_iscritical = 0;
 251
 252                 ber_init2( sber, NULL, LBER_USE_DER );
 253
 254                 ber_printf( sber, "{e}", LDAP_UNWILLING_TO_PERFORM );
 255
 256                 if( ber_flatten2( ber, &sorted.ldctl_value, 0 ) == -1 ) {
 257                         return -1;
 258                 }
 259
 260                 (void) ber_free_buf( ber );
 261
 262                 rc = send_ldap_control( ber, &sorted );
 263                 if( rc == -1 ) return rc;
 264         }
 265 #endif
 266
 267         rc = ber_printf( ber, /*{*/"N}" );
 268
 269         return rc;
 270 }
 271
 272 /*
 273  * slap_response_play()
 274  *
 275  * plays the callback list; rationale: a callback can
 276  *   - remove itself from the list, by setting op->o_callback = NULL;
 277  *     malloc()'ed callbacks should free themselves from inside the
 278  *     sc_response() function.
 279  *   - replace itself with another (list of) callback(s), by setting
 280  *     op->o_callback = a new (list of) callback(s); in this case, it
 281  *     is the callback's responsibility to to append existing subsequent
 282  *     callbacks to the end of the list that is passed to the sc_response()
 283  *     function.
 284  *   - modify the list of subsequent callbacks by modifying the value
 285  *     of the sc_next field from inside the sc_response() function; this
 286  *     case does not require any handling from inside slap_response_play()
 287  *
 288  * To stop execution of the playlist, the sc_response() function must return
 289  * a value different from SLAP_SC_CONTINUE.
 290  *
 291  * The same applies to slap_cleanup_play(); only, there is no means to stop
 292  * execution of the playlist, since all cleanup functions must be called.
 293  */
 294 static int
 295 slap_response_play(
 296         Operation *op,
 297         SlapReply *rs )
 298 {
 299         int rc;
 300
 301         slap_callback   *sc = op->o_callback, **scp;
 302
 303         rc = SLAP_CB_CONTINUE;
 304         for ( scp = &sc; *scp; ) {
 305                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 306
 307                 op->o_callback = *scp;
 308                 if ( op->o_callback->sc_response ) {
 309                         rc = op->o_callback->sc_response( op, rs );
 310                         if ( op->o_callback == NULL ) {
 311                                 /* the callback has been removed;
 312                                  * repair the list */
 313                                 *scp = sc_next;
 314                                 sc_nextp = scp;
 315
 316                         } else if ( op->o_callback != *scp ) {
 317                                 /* a new callback has been inserted
 318                                  * in place of the existing one; repair the list */
 319                                 *scp = op->o_callback;
 320                                 sc_nextp = scp;
 321                         }
 322                         if ( rc != SLAP_CB_CONTINUE ) break;
 323                 }
 324                 scp = sc_nextp;
 325         }
 326
 327         op->o_callback = sc;
 328         return rc;
 329 }
 330
 331 static int
 332 slap_cleanup_play(
 333         Operation *op,
 334         SlapReply *rs )
 335 {
 336         slap_callback   *sc = op->o_callback, **scp;
 337
 338         for ( scp = &sc; *scp; ) {
 339                 slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
 340
 341                 op->o_callback = *scp;
 342                 if ( op->o_callback->sc_cleanup ) {
 343                         (void)op->o_callback->sc_cleanup( op, rs );
 344                         if ( op->o_callback == NULL ) {
 345                                 /* the callback has been removed;
 346                                  * repair the list */
 347                                 *scp = sc_next;
 348                                 sc_nextp = scp;
 349
 350                         } else if ( op->o_callback != *scp ) {
 351                                 /* a new callback has been inserted
 352                                  * after the existing one; repair the list */
 353                                 /* a new callback has been inserted
 354                                  * in place of the existing one; repair the list */
 355                                 *scp = op->o_callback;
 356                                 sc_nextp = scp;
 357                         }
 358                         /* don't care about the result; do all cleanup */
 359                 }
 360                 scp = sc_nextp;
 361         }
 362
 363         op->o_callback = sc;
 364         return LDAP_SUCCESS;
 365 }
 366
 367 static int
 368 send_ldap_response(
 369         Operation *op,
 370         SlapReply *rs )
 371 {
 372         BerElementBuffer berbuf;
 373         BerElement      *ber = (BerElement *) &berbuf;
 374         int             rc = LDAP_SUCCESS;
 375         long    bytes;
 376
 377         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon ) {
 378                 rc = SLAPD_ABANDON;
 379                 goto clean2;
 380         }
 381
 382         if ( op->o_callback ) {
 383                 rc = slap_response_play( op, rs );
 384                 if ( rc != SLAP_CB_CONTINUE ) {
 385                         goto clean2;
 386                 }
 387         }
 388
 389 #ifdef LDAP_CONNECTIONLESS
 390         if (op->o_conn && op->o_conn->c_is_udp)
 391                 ber = op->o_res_ber;
 392         else
 393 #endif
 394         {
 395                 ber_init_w_nullc( ber, LBER_USE_DER );
 396                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 397         }
 398
 399         Debug( LDAP_DEBUG_TRACE,
 400                 "send_ldap_response: msgid=%d tag=%lu err=%d\n",
 401                 rs->sr_msgid, rs->sr_tag, rs->sr_err );
 402
 403         if( rs->sr_ref ) {
 404                 Debug( LDAP_DEBUG_ARGS, "send_ldap_response: ref=\"%s\"\n",
 405                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 406                         NULL, NULL );
 407         }
 408
 409 #ifdef LDAP_CONNECTIONLESS
 410         if (op->o_conn && op->o_conn->c_is_udp &&
 411                 op->o_protocol == LDAP_VERSION2 )
 412         {
 413                 rc = ber_printf( ber, "t{ess" /*"}"*/,
 414                         rs->sr_tag, rs->sr_err,
 415                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 416                 rs->sr_text == NULL ? "" : rs->sr_text );
 417         } else
 418 #endif
 419         if ( rs->sr_type == REP_INTERMEDIATE ) {
 420             rc = ber_printf( ber, "{it{" /*"}}"*/,
 421                         rs->sr_msgid, rs->sr_tag );
 422
 423         } else {
 424             rc = ber_printf( ber, "{it{ess" /*"}}"*/,
 425                 rs->sr_msgid, rs->sr_tag, rs->sr_err,
 426                 rs->sr_matched == NULL ? "" : rs->sr_matched,
 427                 rs->sr_text == NULL ? "" : rs->sr_text );
 428         }
 429
 430         if( rc != -1 ) {
 431                 if ( rs->sr_ref != NULL ) {
 432                         assert( rs->sr_err == LDAP_REFERRAL );
 433                         rc = ber_printf( ber, "t{W}",
 434                                 LDAP_TAG_REFERRAL, rs->sr_ref );
 435                 } else {
 436                         assert( rs->sr_err != LDAP_REFERRAL );
 437                 }
 438         }
 439
 440         if( rc != -1 && rs->sr_type == REP_SASL && rs->sr_sasldata != NULL ) {
 441                 rc = ber_printf( ber, "tO",
 442                         LDAP_TAG_SASL_RES_CREDS, rs->sr_sasldata );
 443         }
 444
 445         if( rc != -1 &&
 446                 ( rs->sr_type == REP_EXTENDED || rs->sr_type == REP_INTERMEDIATE ))
 447         {
 448                 if ( rs->sr_rspoid != NULL ) {
 449                         rc = ber_printf( ber, "ts",
 450                                 rs->sr_type == REP_EXTENDED
 451                                         ? LDAP_TAG_EXOP_RES_OID : LDAP_TAG_IM_RES_OID,
 452                                 rs->sr_rspoid );
 453                 }
 454                 if( rc != -1 && rs->sr_rspdata != NULL ) {
 455                         rc = ber_printf( ber, "tO",
 456                                 rs->sr_type == REP_EXTENDED
 457                                         ? LDAP_TAG_EXOP_RES_VALUE : LDAP_TAG_IM_RES_VALUE,
 458                                 rs->sr_rspdata );
 459                 }
 460         }
 461
 462         if( rc != -1 ) {
 463                 rc = ber_printf( ber, /*"{"*/ "N}" );
 464         }
 465
 466         if( rc != -1 ) {
 467                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
 468         }
 469
 470         if( rc != -1 ) {
 471                 rc = ber_printf( ber, /*"{"*/ "N}" );
 472         }
 473
 474 #ifdef LDAP_CONNECTIONLESS
 475         if( op->o_conn && op->o_conn->c_is_udp && op->o_protocol == LDAP_VERSION2
 476                 && rc != -1 )
 477         {
 478                 rc = ber_printf( ber, /*"{"*/ "N}" );
 479         }
 480 #endif
 481
 482         if ( rc == -1 ) {
 483                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 484
 485 #ifdef LDAP_CONNECTIONLESS
 486                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
 487 #endif
 488                 {
 489                         ber_free_buf( ber );
 490                 }
 491                 goto cleanup;
 492         }
 493
 494         /* send BER */
 495         bytes = send_ldap_ber( op->o_conn, ber );
 496 #ifdef LDAP_CONNECTIONLESS
 497         if (!op->o_conn || op->o_conn->c_is_udp == 0)
 498 #endif
 499         {
 500                 ber_free_buf( ber );
 501         }
 502
 503         if ( bytes < 0 ) {
 504                 Debug( LDAP_DEBUG_ANY,
 505                         "send_ldap_response: ber write failed\n",
 506                         0, 0, 0 );
 507
 508                 goto cleanup;
 509         }
 510
 511         /* ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex ); */
 512         ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
 513         ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
 514         /* ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex ); */
 515
 516 cleanup:;
 517         /* Tell caller that we did this for real, as opposed to being
 518          * overridden by a callback
 519          */
 520         rc = SLAP_CB_CONTINUE;
 521
 522 clean2:;
 523         if ( op->o_callback ) {
 524                 (void)slap_cleanup_play( op, rs );
 525         }
 526
 527         if ( rs->sr_matched && rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 528                 free( (char *)rs->sr_matched );
 529                 rs->sr_matched = NULL;
 530         }
 531
 532         if ( rs->sr_ref && rs->sr_flags & REP_REF_MUSTBEFREED ) {
 533                 ber_bvarray_free( rs->sr_ref );
 534                 rs->sr_ref = NULL;
 535         }
 536
 537         return rc;
 538 }
 539
 540
 541 void
 542 send_ldap_disconnect( Operation *op, SlapReply *rs )
 543 {
 544 #define LDAP_UNSOLICITED_ERROR(e) \
 545         (  (e) == LDAP_PROTOCOL_ERROR \
 546         || (e) == LDAP_STRONG_AUTH_REQUIRED \
 547         || (e) == LDAP_UNAVAILABLE )
 548
 549         assert( LDAP_UNSOLICITED_ERROR( rs->sr_err ) );
 550
 551         rs->sr_type = REP_EXTENDED;
 552
 553         Debug( LDAP_DEBUG_TRACE,
 554                 "send_ldap_disconnect %d:%s\n",
 555                 rs->sr_err, rs->sr_text ? rs->sr_text : "", NULL );
 556
 557         if ( op->o_protocol < LDAP_VERSION3 ) {
 558                 rs->sr_rspoid = NULL;
 559                 rs->sr_tag = slap_req2res( op->o_tag );
 560                 rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 561
 562         } else {
 563                 rs->sr_rspoid = LDAP_NOTICE_DISCONNECT;
 564                 rs->sr_tag = LDAP_RES_EXTENDED;
 565                 rs->sr_msgid = LDAP_RES_UNSOLICITED;
 566         }
 567
 568         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 569                 Statslog( LDAP_DEBUG_STATS,
 570                         "%s DISCONNECT tag=%lu err=%d text=%s\n",
 571                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 572                         rs->sr_text ? rs->sr_text : "", 0 );
 573         }
 574 }
 575
 576 void
 577 slap_send_ldap_result( Operation *op, SlapReply *rs )
 578 {
 579         char *tmp = NULL;
 580         const char *otext = rs->sr_text;
 581         BerVarray oref = rs->sr_ref;
 582
 583         rs->sr_type = REP_RESULT;
 584
 585         /* Propagate Abandons so that cleanup callbacks can be processed */
 586         if ( rs->sr_err == SLAPD_ABANDON || op->o_abandon )
 587                 goto abandon;
 588
 589         assert( !LDAP_API_ERROR( rs->sr_err ) );
 590
 591         Debug( LDAP_DEBUG_TRACE,
 592                 "send_ldap_result: %s p=%d\n",
 593                 op->o_log_prefix, op->o_protocol, 0 );
 594
 595         Debug( LDAP_DEBUG_ARGS,
 596                 "send_ldap_result: err=%d matched=\"%s\" text=\"%s\"\n",
 597                 rs->sr_err, rs->sr_matched ? rs->sr_matched : "",
 598                 rs->sr_text ? rs->sr_text : "" );
 599
 600
 601         if( rs->sr_ref ) {
 602                 Debug( LDAP_DEBUG_ARGS,
 603                         "send_ldap_result: referral=\"%s\"\n",
 604                         rs->sr_ref[0].bv_val ? rs->sr_ref[0].bv_val : "NULL",
 605                         NULL, NULL );
 606         }
 607
 608         assert( rs->sr_err != LDAP_PARTIAL_RESULTS );
 609
 610         if ( rs->sr_err == LDAP_REFERRAL ) {
 611                 if( op->o_domain_scope ) rs->sr_ref = NULL;
 612
 613                 if( rs->sr_ref == NULL ) {
 614                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 615                 } else if ( op->o_protocol < LDAP_VERSION3 ) {
 616                         rs->sr_err = LDAP_PARTIAL_RESULTS;
 617                 }
 618         }
 619
 620         if ( op->o_protocol < LDAP_VERSION3 ) {
 621                 tmp = v2ref( rs->sr_ref, rs->sr_text );
 622                 rs->sr_text = tmp;
 623                 rs->sr_ref = NULL;
 624         }
 625
 626         rs->sr_tag = slap_req2res( op->o_tag );
 627         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 628
 629 abandon:
 630         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 631                 if ( op->o_tag == LDAP_REQ_SEARCH ) {
 632                         char nbuf[64];
 633                         snprintf( nbuf, sizeof nbuf, "%d nentries=%d",
 634                                 rs->sr_err, rs->sr_nentries );
 635
 636                         Statslog( LDAP_DEBUG_STATS,
 637                         "%s SEARCH RESULT tag=%lu err=%s text=%s\n",
 638                                 op->o_log_prefix, rs->sr_tag, nbuf,
 639                                 rs->sr_text ? rs->sr_text : "", 0 );
 640                 } else {
 641                         Statslog( LDAP_DEBUG_STATS,
 642                                 "%s RESULT tag=%lu err=%d text=%s\n",
 643                                 op->o_log_prefix, rs->sr_tag, rs->sr_err,
 644                                 rs->sr_text ? rs->sr_text : "", 0 );
 645                 }
 646         }
 647
 648         if( tmp != NULL ) ch_free(tmp);
 649         rs->sr_text = otext;
 650         rs->sr_ref = oref;
 651 }
 652
 653 void
 654 send_ldap_sasl( Operation *op, SlapReply *rs )
 655 {
 656         rs->sr_type = REP_SASL;
 657         Debug( LDAP_DEBUG_TRACE, "send_ldap_sasl: err=%d len=%ld\n",
 658                 rs->sr_err,
 659                 rs->sr_sasldata ? (long) rs->sr_sasldata->bv_len : -1, NULL );
 660
 661         rs->sr_tag = slap_req2res( op->o_tag );
 662         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 663
 664         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 665                 Statslog( LDAP_DEBUG_STATS,
 666                         "%s RESULT tag=%lu err=%d text=%s\n",
 667                         op->o_log_prefix, rs->sr_tag, rs->sr_err,
 668                         rs->sr_text ? rs->sr_text : "", 0 );
 669         }
 670 }
 671
 672 void
 673 slap_send_ldap_extended( Operation *op, SlapReply *rs )
 674 {
 675         rs->sr_type = REP_EXTENDED;
 676
 677         Debug( LDAP_DEBUG_TRACE,
 678                 "send_ldap_extended: err=%d oid=%s len=%ld\n",
 679                 rs->sr_err,
 680                 rs->sr_rspoid ? rs->sr_rspoid : "",
 681                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 682
 683         rs->sr_tag = slap_req2res( op->o_tag );
 684         rs->sr_msgid = (rs->sr_tag != LBER_SEQUENCE) ? op->o_msgid : 0;
 685
 686         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 687                 Statslog( LDAP_DEBUG_STATS,
 688                         "%s RESULT oid=%s err=%d text=%s\n",
 689                         op->o_log_prefix, rs->sr_rspoid ? rs->sr_rspoid : "",
 690                         rs->sr_err, rs->sr_text ? rs->sr_text : "", 0 );
 691         }
 692 }
 693
 694 void
 695 slap_send_ldap_intermediate( Operation *op, SlapReply *rs )
 696 {
 697         rs->sr_type = REP_INTERMEDIATE;
 698         Debug( LDAP_DEBUG_TRACE,
 699                 "send_ldap_intermediate: err=%d oid=%s len=%ld\n",
 700                 rs->sr_err,
 701                 rs->sr_rspoid ? rs->sr_rspoid : "",
 702                 rs->sr_rspdata != NULL ? rs->sr_rspdata->bv_len : 0 );
 703         rs->sr_tag = LDAP_RES_INTERMEDIATE;
 704         rs->sr_msgid = op->o_msgid;
 705         if ( send_ldap_response( op, rs ) == SLAP_CB_CONTINUE ) {
 706                 Statslog( LDAP_DEBUG_STATS2,
 707                         "%s INTERM oid=%s\n",
 708                         op->o_log_prefix,
 709                         rs->sr_rspoid ? rs->sr_rspoid : "", 0, 0, 0 );
 710         }
 711 }
 712
 713 /*
 714  * returns:
 715  *
 716  * LDAP_SUCCESS                 entry sent
 717  * LDAP_OTHER                   entry not sent (other)
 718  * LDAP_INSUFFICIENT_ACCESS     entry not sent (ACL)
 719  * LDAP_UNAVAILABLE             entry not sent (connection closed)
 720  * LDAP_SIZELIMIT_EXCEEDED      entry not sent (caller must send sizelimitExceeded)
 721  */
 722
 723 int
 724 slap_send_search_entry( Operation *op, SlapReply *rs )
 725 {
 726         BerElementBuffer berbuf;
 727         BerElement      *ber = (BerElement *) &berbuf;
 728         Attribute       *a;
 729         int             i, j, rc = LDAP_UNAVAILABLE, bytes;
 730         char            *edn;
 731         int             userattrs;
 732         AccessControlState acl_state = ACL_STATE_INIT;
 733         int                      attrsonly;
 734         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
 735
 736         /* a_flags: array of flags telling if the i-th element will be
 737          *          returned or filtered out
 738          * e_flags: array of a_flags
 739          */
 740         char **e_flags = NULL;
 741
 742         if ( op->ors_slimit >= 0 && rs->sr_nentries >= op->ors_slimit ) {
 743                 return LDAP_SIZELIMIT_EXCEEDED;
 744         }
 745
 746 #ifndef NO_THREADS
 747         /* Every 64 entries, check for thread pool pause */
 748         if (( rs->sr_nentries & 0x3f == 0x3f ) &&
 749                 ldap_pvt_thread_pool_query( &connection_pool,
 750                         LDAP_PVT_THREAD_POOL_PARAM_PAUSING, &i ) == 0 && i ) {
 751                 return LDAP_BUSY;
 752         }
 753 #endif
 754
 755         rs->sr_type = REP_SEARCH;
 756
 757         /* eventually will loop through generated operational attribute types
 758          * currently implemented types include:
 759          *      entryDN, subschemaSubentry, and hasSubordinates */
 760         /* NOTE: moved before overlays callback circling because
 761          * they may modify entry and other stuff in rs */
 762         /* check for special all operational attributes ("+") type */
 763         /* FIXME: maybe we could set this flag at the operation level;
 764          * however, in principle the caller of send_search_entry() may
 765          * change the attribute list at each call */
 766         rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
 767
 768         rc = backend_operational( op, rs );
 769         if ( rc ) {
 770                 goto error_return;
 771         }
 772
 773         if ( op->o_callback ) {
 774                 rc = slap_response_play( op, rs );
 775                 if ( rc != SLAP_CB_CONTINUE ) {
 776                         goto error_return;
 777                 }
 778         }
 779
 780         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
 781                 op->o_connid, rs->sr_entry->e_name.bv_val,
 782                 op->ors_attrsonly ? " (attrsOnly)" : "" );
 783
 784         attrsonly = op->ors_attrsonly;
 785
 786         if ( !access_allowed( op, rs->sr_entry, ad_entry, NULL, ACL_READ, NULL )) {
 787                 Debug( LDAP_DEBUG_ACL,
 788                         "send_search_entry: conn %lu access to entry (%s) not allowed\n",
 789                         op->o_connid, rs->sr_entry->e_name.bv_val, 0 );
 790
 791                 rc = LDAP_INSUFFICIENT_ACCESS;
 792                 goto error_return;
 793         }
 794
 795         edn = rs->sr_entry->e_nname.bv_val;
 796
 797         if ( op->o_res_ber ) {
 798                 /* read back control or LDAP_CONNECTIONLESS */
 799             ber = op->o_res_ber;
 800         } else {
 801                 struct berval   bv;
 802
 803                 bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
 804                 bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
 805
 806                 ber_init2( ber, &bv, LBER_USE_DER );
 807                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
 808         }
 809
 810 #ifdef LDAP_CONNECTIONLESS
 811         if ( op->o_conn && op->o_conn->c_is_udp ) {
 812                 /* CONNECTIONLESS */
 813                 if ( op->o_protocol == LDAP_VERSION2 ) {
 814                 rc = ber_printf(ber, "t{O{" /*}}*/,
 815                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 816                 } else {
 817                 rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 818                                 LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 819                 }
 820         } else
 821 #endif
 822         if ( op->o_res_ber ) {
 823                 /* read back control */
 824             rc = ber_printf( ber, "{O{" /*}}*/, &rs->sr_entry->e_name );
 825         } else {
 826             rc = ber_printf( ber, "{it{O{" /*}}}*/, op->o_msgid,
 827                         LDAP_RES_SEARCH_ENTRY, &rs->sr_entry->e_name );
 828         }
 829
 830         if ( rc == -1 ) {
 831                 Debug( LDAP_DEBUG_ANY,
 832                         "send_search_entry: conn %lu  ber_printf failed\n",
 833                         op->o_connid, 0, 0 );
 834
 835                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 836                 send_ldap_error( op, rs, LDAP_OTHER, "encoding DN error" );
 837                 rc = rs->sr_err;
 838                 goto error_return;
 839         }
 840
 841         /* check for special all user attributes ("*") type */
 842         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 843
 844         /* create an array of arrays of flags. Each flag corresponds
 845          * to particular value of attribute and equals 1 if value matches
 846          * to ValuesReturnFilter or 0 if not
 847          */
 848         if ( op->o_vrFilter != NULL ) {
 849                 int     k = 0;
 850                 size_t  size;
 851
 852                 for ( a = rs->sr_entry->e_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
 853                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
 854                 }
 855
 856                 size = i * sizeof(char *) + k;
 857                 if ( size > 0 ) {
 858                         char    *a_flags;
 859                         e_flags = slap_sl_calloc ( 1, i * sizeof(char *) + k, op->o_tmpmemctx );
 860                         if( e_flags == NULL ) {
 861                         Debug( LDAP_DEBUG_ANY,
 862                                         "send_search_entry: conn %lu slap_sl_calloc failed\n",
 863                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 864                                 ber_free( ber, 1 );
 865
 866                                 send_ldap_error( op, rs, LDAP_OTHER, "out of memory" );
 867                                 goto error_return;
 868                         }
 869                         a_flags = (char *)(e_flags + i);
 870                         memset( a_flags, 0, k );
 871                         for ( a=rs->sr_entry->e_attrs, i=0; a != NULL; a=a->a_next, i++ ) {
 872                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
 873                                 e_flags[i] = a_flags;
 874                                 a_flags += j;
 875                         }
 876
 877                         rc = filter_matched_values(op, rs->sr_entry->e_attrs, &e_flags) ;
 878                         if ( rc == -1 ) {
 879                                 Debug( LDAP_DEBUG_ANY, "send_search_entry: "
 880                                         "conn %lu matched values filtering failed\n",
 881                                         op->o_connid ? op->o_connid : 0, 0, 0 );
 882                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 883                                 send_ldap_error( op, rs, LDAP_OTHER,
 884                                         "matched values filtering error" );
 885                                 rc = rs->sr_err;
 886                                 goto error_return;
 887                         }
 888                 }
 889         }
 890
 891         for ( a = rs->sr_entry->e_attrs, j = 0; a != NULL; a = a->a_next, j++ ) {
 892                 AttributeDescription *desc = a->a_desc;
 893                 int finish = 0;
 894
 895                 if ( rs->sr_attrs == NULL ) {
 896                         /* all user attrs request, skip operational attributes */
 897                         if( is_at_operational( desc->ad_type ) ) {
 898                                 continue;
 899                         }
 900
 901                 } else {
 902                         /* specific attrs requested */
 903                         if ( is_at_operational( desc->ad_type ) ) {
 904                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
 905                                         !ad_inlist( desc, rs->sr_attrs ) )
 906                                 {
 907                                         continue;
 908                                 }
 909
 910                         } else {
 911                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
 912                                         continue;
 913                                 }
 914                         }
 915                 }
 916
 917                 if ( attrsonly ) {
 918                         if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
 919                                 ACL_READ, &acl_state ) )
 920                         {
 921                                 Debug( LDAP_DEBUG_ACL, "send_search_entry: "
 922                                         "conn %lu access to attribute %s not allowed\n",
 923                                         op->o_connid, desc->ad_cname.bv_val, 0 );
 924                                 continue;
 925                         }
 926
 927                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 928                                 Debug( LDAP_DEBUG_ANY,
 929                                         "send_search_entry: conn %lu  ber_printf failed\n",
 930                                         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 description error");
 935                                 rc = rs->sr_err;
 936                                 goto error_return;
 937                         }
 938                         finish = 1;
 939
 940                 } else {
 941                         int first = 1;
 942                         for ( i = 0; a->a_nvals[i].bv_val != NULL; i++ ) {
 943                                 if ( ! access_allowed( op, rs->sr_entry,
 944                                         desc, &a->a_nvals[i], ACL_READ, &acl_state ) )
 945                                 {
 946                                         Debug( LDAP_DEBUG_ACL,
 947                                                 "send_search_entry: conn %lu "
 948                                                 "access to attribute %s, value #%d not allowed\n",
 949                                                 op->o_connid, desc->ad_cname.bv_val, i );
 950
 951                                         continue;
 952                                 }
 953
 954                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
 955                                         continue;
 956                                 }
 957
 958                                 if ( first ) {
 959                                         first = 0;
 960                                         finish = 1;
 961                                         if (( rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname )) == -1 ) {
 962                                                 Debug( LDAP_DEBUG_ANY,
 963                                                         "send_search_entry: conn %lu  ber_printf failed\n",
 964                                                         op->o_connid, 0, 0 );
 965
 966                                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 967                                                 send_ldap_error( op, rs, LDAP_OTHER,
 968                                                         "encoding description error");
 969                                                 rc = rs->sr_err;
 970                                                 goto error_return;
 971                                         }
 972                                 }
 973                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
 974                                         Debug( LDAP_DEBUG_ANY,
 975                                                 "send_search_entry: conn %lu  "
 976                                                 "ber_printf failed.\n", op->o_connid, 0, 0 );
 977
 978                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 979                                         send_ldap_error( op, rs, LDAP_OTHER,
 980                                                 "encoding values error" );
 981                                         rc = rs->sr_err;
 982                                         goto error_return;
 983                                 }
 984                         }
 985                 }
 986
 987                 if ( finish && ( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
 988                         Debug( LDAP_DEBUG_ANY,
 989                                 "send_search_entry: conn %lu ber_printf failed\n",
 990                                 op->o_connid, 0, 0 );
 991
 992                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
 993                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
 994                         rc = rs->sr_err;
 995                         goto error_return;
 996                 }
 997         }
 998
 999         /* NOTE: moved before overlays callback circling because
1000          * they may modify entry and other stuff in rs */
1001         if ( rs->sr_operational_attrs != NULL && op->o_vrFilter != NULL ) {
1002                 int     k = 0;
1003                 size_t  size;
1004
1005                 for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1006                         for ( j = 0; a->a_vals[j].bv_val != NULL; j++ ) k++;
1007                 }
1008
1009                 size = i * sizeof(char *) + k;
1010                 if ( size > 0 ) {
1011                         char    *a_flags, **tmp;
1012
1013                         /*
1014                          * Reuse previous memory - we likely need less space
1015                          * for operational attributes
1016                          */
1017                         tmp = slap_sl_realloc( e_flags, i * sizeof(char *) + k,
1018                                 op->o_tmpmemctx );
1019                         if ( tmp == NULL ) {
1020                                 Debug( LDAP_DEBUG_ANY,
1021                                         "send_search_entry: conn %lu "
1022                                         "not enough memory "
1023                                         "for matched values filtering\n",
1024                                         op->o_connid, 0, 0 );
1025                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1026                                 send_ldap_error( op, rs, LDAP_OTHER,
1027                                         "not enough memory for matched values filtering" );
1028                                 goto error_return;
1029                         }
1030                         e_flags = tmp;
1031                         a_flags = (char *)(e_flags + i);
1032                         memset( a_flags, 0, k );
1033                         for ( a = rs->sr_operational_attrs, i=0; a != NULL; a = a->a_next, i++ ) {
1034                                 for ( j = 0; a->a_vals[j].bv_val != NULL; j++ );
1035                                 e_flags[i] = a_flags;
1036                                 a_flags += j;
1037                         }
1038                         rc = filter_matched_values(op, rs->sr_operational_attrs, &e_flags) ;
1039
1040                         if ( rc == -1 ) {
1041                                 Debug( LDAP_DEBUG_ANY,
1042                                         "send_search_entry: conn %lu "
1043                                         "matched values filtering failed\n",
1044                                         op->o_connid ? op->o_connid : 0, 0, 0);
1045                                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1046                                 send_ldap_error( op, rs, LDAP_OTHER,
1047                                         "matched values filtering error" );
1048                                 rc = rs->sr_err;
1049                                 goto error_return;
1050                         }
1051                 }
1052         }
1053
1054         for (a = rs->sr_operational_attrs, j=0; a != NULL; a = a->a_next, j++ ) {
1055                 AttributeDescription *desc = a->a_desc;
1056
1057                 if ( rs->sr_attrs == NULL ) {
1058                         /* all user attrs request, skip operational attributes */
1059                         if( is_at_operational( desc->ad_type ) ) {
1060                                 continue;
1061                         }
1062
1063                 } else {
1064                         /* specific attrs requested */
1065                         if( is_at_operational( desc->ad_type ) ) {
1066                                 if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
1067                                         !ad_inlist( desc, rs->sr_attrs ) )
1068                                 {
1069                                         continue;
1070                                 }
1071                         } else {
1072                                 if ( !userattrs && !ad_inlist( desc, rs->sr_attrs ) ) {
1073                                         continue;
1074                                 }
1075                         }
1076                 }
1077
1078                 if ( ! access_allowed( op, rs->sr_entry, desc, NULL,
1079                         ACL_READ, &acl_state ) )
1080                 {
1081                         Debug( LDAP_DEBUG_ACL,
1082                                 "send_search_entry: conn %lu "
1083                                 "access to attribute %s not allowed\n",
1084                                 op->o_connid, desc->ad_cname.bv_val, 0 );
1085
1086                         continue;
1087                 }
1088
1089                 rc = ber_printf( ber, "{O[" /*]}*/ , &desc->ad_cname );
1090                 if ( rc == -1 ) {
1091                         Debug( LDAP_DEBUG_ANY,
1092                                 "send_search_entry: conn %lu  "
1093                                 "ber_printf failed\n", op->o_connid, 0, 0 );
1094
1095                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1096                         send_ldap_error( op, rs, LDAP_OTHER,
1097                                 "encoding description error" );
1098                         rc = rs->sr_err;
1099                         goto error_return;
1100                 }
1101
1102                 if ( ! attrsonly ) {
1103                         for ( i = 0; a->a_vals[i].bv_val != NULL; i++ ) {
1104                                 if ( ! access_allowed( op, rs->sr_entry,
1105                                         desc, &a->a_vals[i], ACL_READ, &acl_state ) )
1106                                 {
1107                                         Debug( LDAP_DEBUG_ACL,
1108                                                 "send_search_entry: conn %lu "
1109                                                 "access to %s, value %d not allowed\n",
1110                                                 op->o_connid, desc->ad_cname.bv_val, i );
1111
1112                                         continue;
1113                                 }
1114
1115                                 if ( op->o_vrFilter && e_flags[j][i] == 0 ){
1116                                         continue;
1117                                 }
1118
1119                                 if (( rc = ber_printf( ber, "O", &a->a_vals[i] )) == -1 ) {
1120                                         Debug( LDAP_DEBUG_ANY,
1121                                                 "send_search_entry: conn %lu  ber_printf failed\n",
1122                                                 op->o_connid, 0, 0 );
1123
1124                                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1125                                         send_ldap_error( op, rs, LDAP_OTHER,
1126                                                 "encoding values error" );
1127                                         rc = rs->sr_err;
1128                                         goto error_return;
1129                                 }
1130                         }
1131                 }
1132
1133                 if (( rc = ber_printf( ber, /*{[*/ "]N}" )) == -1 ) {
1134                         Debug( LDAP_DEBUG_ANY,
1135                                 "send_search_entry: conn %lu  ber_printf failed\n",
1136                                 op->o_connid, 0, 0 );
1137
1138                         if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1139                         send_ldap_error( op, rs, LDAP_OTHER, "encode end error" );
1140                         rc = rs->sr_err;
1141                         goto error_return;
1142                 }
1143         }
1144
1145         /* free e_flags */
1146         if ( e_flags ) {
1147                 slap_sl_free( e_flags, op->o_tmpmemctx );
1148                 e_flags = NULL;
1149         }
1150
1151         rc = ber_printf( ber, /*{{*/ "}N}" );
1152
1153         if( rc != -1 ) {
1154                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1155         }
1156
1157         if( rc != -1 ) {
1158 #ifdef LDAP_CONNECTIONLESS
1159                 if( op->o_conn && op->o_conn->c_is_udp ) {
1160                         if ( op->o_protocol != LDAP_VERSION2 ) {
1161                                 rc = ber_printf( ber, /*{*/ "N}" );
1162                         }
1163                 } else
1164 #endif
1165                 if ( op->o_res_ber == NULL ) {
1166                         rc = ber_printf( ber, /*{*/ "N}" );
1167                 }
1168         }
1169
1170         if ( rc == -1 ) {
1171                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
1172
1173                 if ( op->o_res_ber == NULL ) ber_free_buf( ber );
1174                 send_ldap_error( op, rs, LDAP_OTHER, "encode entry end error" );
1175                 rc = rs->sr_err;
1176                 goto error_return;
1177         }
1178
1179         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1180                 be_entry_release_rw( op, rs->sr_entry, 0 );
1181                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1182                 rs->sr_entry = NULL;
1183         }
1184
1185         if ( op->o_res_ber == NULL ) {
1186                 bytes = send_ldap_ber( op->o_conn, ber );
1187                 ber_free_buf( ber );
1188
1189                 if ( bytes < 0 ) {
1190                         Debug( LDAP_DEBUG_ANY,
1191                                 "send_search_entry: conn %lu  ber write failed.\n",
1192                                 op->o_connid, 0, 0 );
1193
1194                         rc = LDAP_UNAVAILABLE;
1195                         goto error_return;
1196                 }
1197                 rs->sr_nentries++;
1198
1199                 /* ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex ); */
1200                 ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1201                 ldap_pvt_mp_add_ulong( slap_counters.sc_entries, 1 );
1202                 ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1203                 /* ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex ); */
1204         }
1205
1206         Statslog( LDAP_DEBUG_STATS2, "%s ENTRY dn=\"%s\"\n",
1207             op->o_log_prefix, edn, 0, 0, 0 );
1208
1209         Debug( LDAP_DEBUG_TRACE,
1210                 "<= send_search_entry: conn %lu exit.\n", op->o_connid, 0, 0 );
1211
1212         rc = LDAP_SUCCESS;
1213
1214 error_return:;
1215         if ( op->o_callback ) {
1216                 (void)slap_cleanup_play( op, rs );
1217         }
1218
1219         if ( e_flags ) {
1220                 slap_sl_free( e_flags, op->o_tmpmemctx );
1221         }
1222
1223         if ( rs->sr_operational_attrs ) {
1224                 attrs_free( rs->sr_operational_attrs );
1225                 rs->sr_operational_attrs = NULL;
1226         }
1227         rs->sr_attr_flags = SLAP_ATTRS_UNDEFINED;
1228
1229         /* FIXME: I think rs->sr_type should be explicitly set to
1230          * REP_SEARCH here. That's what it was when we entered this
1231          * function. send_ldap_error may have changed it, but we
1232          * should set it back so that the cleanup functions know
1233          * what they're doing.
1234          */
1235         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH
1236                 && rs->sr_entry
1237                 && ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) )
1238         {
1239                 entry_free( rs->sr_entry );
1240                 rs->sr_entry = NULL;
1241                 rs->sr_flags &= ~REP_ENTRY_MUSTBEFREED;
1242         }
1243
1244         return( rc );
1245 }
1246
1247 int
1248 slap_send_search_reference( Operation *op, SlapReply *rs )
1249 {
1250         BerElementBuffer berbuf;
1251         BerElement      *ber = (BerElement *) &berbuf;
1252         int rc = 0;
1253         int bytes;
1254
1255         AttributeDescription *ad_ref = slap_schema.si_ad_ref;
1256         AttributeDescription *ad_entry = slap_schema.si_ad_entry;
1257
1258         rs->sr_type = REP_SEARCHREF;
1259         if ( op->o_callback ) {
1260                 rc = slap_response_play( op, rs );
1261                 if ( rc != SLAP_CB_CONTINUE ) {
1262                         goto rel;
1263                 }
1264         }
1265
1266         Debug( LDAP_DEBUG_TRACE,
1267                 "=> send_search_reference: dn=\"%s\"\n",
1268                 rs->sr_entry ? rs->sr_entry->e_name.bv_val : "(null)", 0, 0 );
1269
1270         if (  rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1271                 ad_entry, NULL, ACL_READ, NULL ) )
1272         {
1273                 Debug( LDAP_DEBUG_ACL,
1274                         "send_search_reference: access to entry not allowed\n",
1275                     0, 0, 0 );
1276                 rc = 1;
1277                 goto rel;
1278         }
1279
1280         if ( rs->sr_entry && ! access_allowed( op, rs->sr_entry,
1281                 ad_ref, NULL, ACL_READ, NULL ) )
1282         {
1283                 Debug( LDAP_DEBUG_ACL,
1284                         "send_search_reference: access "
1285                         "to reference not allowed\n",
1286                     0, 0, 0 );
1287                 rc = 1;
1288                 goto rel;
1289         }
1290
1291         if( op->o_domain_scope ) {
1292                 Debug( LDAP_DEBUG_ANY,
1293                         "send_search_reference: domainScope control in (%s)\n",
1294                         rs->sr_entry->e_dn, 0, 0 );
1295                 rc = 0;
1296                 goto rel;
1297         }
1298
1299         if( rs->sr_ref == NULL ) {
1300                 Debug( LDAP_DEBUG_ANY,
1301                         "send_search_reference: null ref in (%s)\n",
1302                         rs->sr_entry ? rs->sr_entry->e_dn : "(null)", 0, 0 );
1303                 rc = 1;
1304                 goto rel;
1305         }
1306
1307         if( op->o_protocol < LDAP_VERSION3 ) {
1308                 rc = 0;
1309                 /* save the references for the result */
1310                 if( rs->sr_ref[0].bv_val != NULL ) {
1311                         if( value_add( &rs->sr_v2ref, rs->sr_ref ) )
1312                                 rc = LDAP_OTHER;
1313                 }
1314                 goto rel;
1315         }
1316
1317 #ifdef LDAP_CONNECTIONLESS
1318         if( op->o_conn && op->o_conn->c_is_udp ) {
1319                 ber = op->o_res_ber;
1320         } else
1321 #endif
1322         {
1323                 ber_init_w_nullc( ber, LBER_USE_DER );
1324                 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1325         }
1326
1327         rc = ber_printf( ber, "{it{W}" /*"}"*/ , op->o_msgid,
1328                 LDAP_RES_SEARCH_REFERENCE, rs->sr_ref );
1329
1330         if( rc != -1 ) {
1331                 rc = send_ldap_controls( op, ber, rs->sr_ctrls );
1332         }
1333
1334         if( rc != -1 ) {
1335                 rc = ber_printf( ber, /*"{"*/ "N}" );
1336         }
1337
1338         if ( rc == -1 ) {
1339                 Debug( LDAP_DEBUG_ANY,
1340                         "send_search_reference: ber_printf failed\n", 0, 0, 0 );
1341
1342 #ifdef LDAP_CONNECTIONLESS
1343                 if (!op->o_conn || op->o_conn->c_is_udp == 0)
1344 #endif
1345                 ber_free_buf( ber );
1346                 send_ldap_error( op, rs, LDAP_OTHER, "encode DN error" );
1347                 goto rel;
1348         }
1349
1350         rc = 0;
1351         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1352                 be_entry_release_rw( op, rs->sr_entry, 0 );
1353                 rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1354                 rs->sr_entry = NULL;
1355         }
1356
1357 #ifdef LDAP_CONNECTIONLESS
1358         if (!op->o_conn || op->o_conn->c_is_udp == 0) {
1359 #endif
1360         bytes = send_ldap_ber( op->o_conn, ber );
1361         ber_free_buf( ber );
1362
1363         if ( bytes < 0 ) {
1364                 rc = LDAP_UNAVAILABLE;
1365         } else {
1366                 /* ldap_pvt_thread_mutex_lock( &slap_counters.sc_sent_mutex ); */
1367                 ldap_pvt_mp_add_ulong( slap_counters.sc_bytes, (unsigned long)bytes );
1368                 ldap_pvt_mp_add_ulong( slap_counters.sc_refs, 1 );
1369                 ldap_pvt_mp_add_ulong( slap_counters.sc_pdu, 1 );
1370                 /* ldap_pvt_thread_mutex_unlock( &slap_counters.sc_sent_mutex ); */
1371         }
1372 #ifdef LDAP_CONNECTIONLESS
1373         }
1374 #endif
1375         if ( rs->sr_ref != NULL ) {
1376                 int     r;
1377
1378                 for ( r = 0; !BER_BVISNULL( &rs->sr_ref[ r ] ); r++ ) {
1379                         Statslog( LDAP_DEBUG_STATS2, "%s REF #%d \"%s\"\n",
1380                                 op->o_log_prefix, r, rs->sr_ref[0].bv_val,
1381                                 0, 0 );
1382                 }
1383
1384         } else {
1385                 Statslog( LDAP_DEBUG_STATS2, "%s REF \"(null)\"\n",
1386                         op->o_log_prefix, 0, 0, 0, 0 );
1387         }
1388
1389         Debug( LDAP_DEBUG_TRACE, "<= send_search_reference\n", 0, 0, 0 );
1390
1391 rel:
1392         if ( op->o_callback ) {
1393                 (void)slap_cleanup_play( op, rs );
1394         }
1395
1396         return rc;
1397 }
1398
1399 int
1400 str2result(
1401     char        *s,
1402     int         *code,
1403     char        **matched,
1404     char        **info )
1405 {
1406         int     rc;
1407         char    *c;
1408
1409         *code = LDAP_SUCCESS;
1410         *matched = NULL;
1411         *info = NULL;
1412
1413         if ( strncasecmp( s, "RESULT", STRLENOF( "RESULT" ) ) != 0 ) {
1414                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
1415                     s, 0, 0 );
1416
1417                 return( -1 );
1418         }
1419
1420         rc = 0;
1421         while ( (s = strchr( s, '\n' )) != NULL ) {
1422                 *s++ = '\0';
1423                 if ( *s == '\0' ) {
1424                         break;
1425                 }
1426                 if ( (c = strchr( s, ':' )) != NULL ) {
1427                         c++;
1428                 }
1429
1430                 if ( strncasecmp( s, "code", STRLENOF( "code" ) ) == 0 ) {
1431                         char    *next = NULL;
1432                         long    retcode;
1433
1434                         if ( c == NULL ) {
1435                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing value\n",
1436                                     s, 0, 0 );
1437                                 rc = -1;
1438                                 continue;
1439                         }
1440
1441                         while ( isspace( (unsigned char) c[ 0 ] ) ) c++;
1442                         if ( c[ 0 ] == '\0' ) {
1443                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) missing or empty value\n",
1444                                     s, 0, 0 );
1445                                 rc = -1;
1446                                 continue;
1447                         }
1448
1449                         retcode = strtol( c, &next, 10 );
1450                         if ( next == NULL || next == c ) {
1451                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) unable to parse value\n",
1452                                     s, 0, 0 );
1453                                 rc = -1;
1454                                 continue;
1455                         }
1456
1457                         while ( isspace( (unsigned char) next[ 0 ] ) ) next++;
1458                         if ( next[ 0 ] != '\0' ) {
1459                                 Debug( LDAP_DEBUG_ANY, "str2result (%s) extra cruft after value\n",
1460                                     s, 0, 0 );
1461                                 rc = -1;
1462                                 continue;
1463                         }
1464
1465                         /* FIXME: what if it's larger that max int? */
1466                         *code = (int)retcode;
1467
1468                 } else if ( strncasecmp( s, "matched", STRLENOF( "matched" ) ) == 0 ) {
1469                         if ( c != NULL ) {
1470                                 *matched = c;
1471                         }
1472                 } else if ( strncasecmp( s, "info", STRLENOF( "info" ) ) == 0 ) {
1473                         if ( c != NULL ) {
1474                                 *info = c;
1475                         }
1476                 } else {
1477                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
1478                             s, 0, 0 );
1479
1480                         rc = -1;
1481                 }
1482         }
1483
1484         return( rc );
1485 }
1486
1487 int slap_read_controls(
1488         Operation *op,
1489         SlapReply *rs,
1490         Entry *e,
1491         const struct berval *oid,
1492         LDAPControl **ctrl )
1493 {
1494         int rc;
1495         struct berval bv;
1496         BerElementBuffer berbuf;
1497         BerElement *ber = (BerElement *) &berbuf;
1498         LDAPControl c;
1499         Operation myop;
1500
1501         Debug( LDAP_DEBUG_ANY, "slap_read_controls: (%s) %s\n",
1502                 oid->bv_val, e->e_dn, 0 );
1503
1504         rs->sr_entry = e;
1505         rs->sr_attrs = ( oid == &slap_pre_read_bv ) ?
1506                 op->o_preread_attrs : op->o_postread_attrs;
1507
1508         bv.bv_len = entry_flatsize( rs->sr_entry, 0 );
1509         bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );
1510
1511         ber_init2( ber, &bv, LBER_USE_DER );
1512         ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1513
1514         /* create new operation */
1515         myop = *op;
1516         /* FIXME: o_bd needed for ACL */
1517         myop.o_bd = op->o_bd;
1518         myop.o_res_ber = ber;
1519         myop.o_callback = NULL;
1520         myop.ors_slimit = 1;
1521
1522         rc = slap_send_search_entry( &myop, rs );
1523         if( rc ) return rc;
1524
1525         rc = ber_flatten2( ber, &c.ldctl_value, 0 );
1526
1527         if( rc == LBER_ERROR ) return LDAP_OTHER;
1528
1529         c.ldctl_oid = oid->bv_val;
1530         c.ldctl_iscritical = 0;
1531
1532         if ( *ctrl == NULL ) {
1533                 /* first try */
1534                 *ctrl = (LDAPControl *) slap_sl_calloc( 1, sizeof(LDAPControl), NULL );
1535         } else {
1536                 /* retry: free previous try */
1537                 slap_sl_free( (*ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
1538         }
1539
1540         **ctrl = c;
1541         return LDAP_SUCCESS;
1542 }
1543
1544 /* Map API errors to protocol errors... */
1545 int
1546 slap_map_api2result( SlapReply *rs )
1547 {
1548         switch(rs->sr_err) {
1549         case LDAP_SERVER_DOWN:
1550                 return LDAP_UNAVAILABLE;
1551         case LDAP_LOCAL_ERROR:
1552                 return LDAP_OTHER;
1553         case LDAP_ENCODING_ERROR:
1554         case LDAP_DECODING_ERROR:
1555                 return LDAP_PROTOCOL_ERROR;
1556         case LDAP_TIMEOUT:
1557                 return LDAP_UNAVAILABLE;
1558         case LDAP_AUTH_UNKNOWN:
1559                 return LDAP_AUTH_METHOD_NOT_SUPPORTED;
1560         case LDAP_FILTER_ERROR:
1561                 rs->sr_text = "Filter error";
1562                 return LDAP_OTHER;
1563         case LDAP_USER_CANCELLED:
1564                 rs->sr_text = "User cancelled";
1565                 return LDAP_OTHER;
1566         case LDAP_PARAM_ERROR:
1567                 return LDAP_PROTOCOL_ERROR;
1568         case LDAP_NO_MEMORY:
1569                 return LDAP_OTHER;
1570         case LDAP_CONNECT_ERROR:
1571                 return LDAP_UNAVAILABLE;
1572         case LDAP_NOT_SUPPORTED:
1573                 return LDAP_UNWILLING_TO_PERFORM;
1574         case LDAP_CONTROL_NOT_FOUND:
1575                 return LDAP_PROTOCOL_ERROR;
1576         case LDAP_NO_RESULTS_RETURNED:
1577                 return LDAP_NO_SUCH_OBJECT;
1578         case LDAP_MORE_RESULTS_TO_RETURN:
1579                 rs->sr_text = "More results to return";
1580                 return LDAP_OTHER;
1581         case LDAP_CLIENT_LOOP:
1582         case LDAP_REFERRAL_LIMIT_EXCEEDED:
1583                 return LDAP_LOOP_DETECT;
1584         default:
1585                 if ( LDAP_API_ERROR(rs->sr_err) ) return LDAP_OTHER;
1586                 return rs->sr_err;
1587         }
1588 }
1589
1590
1591 slap_mask_t
1592 slap_attr_flags( AttributeName *an )
1593 {
1594         slap_mask_t     flags = SLAP_ATTRS_UNDEFINED;
1595
1596         if ( an == NULL ) {
1597                 flags |= ( SLAP_OPATTRS_NO | SLAP_USERATTRS_YES );
1598
1599         } else {
1600                 flags |= an_find( an, &AllOper )
1601                         ? SLAP_OPATTRS_YES : SLAP_OPATTRS_NO;
1602                 flags |= an_find( an, &AllUser )
1603                         ? SLAP_USERATTRS_YES : SLAP_USERATTRS_NO;
1604         }
1605
1606         return flags;
1607 }
1608