git.sur5r.net Git - openldap/blob - libraries/libldap/request.c

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6 /*  Portions
   7  *  Copyright (c) 1995 Regents of the University of Michigan.
   8  *  All rights reserved.
   9  */
  10 /*---
  11  * This notice applies to changes, created by or for Novell, Inc.,
  12  * to preexisting works for which notices appear elsewhere in this file.
  13  *
  14  * Copyright (C) 1999, 2000 Novell, Inc. All Rights Reserved.
  15  *
  16  * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND TREATIES.
  17  * USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT TO VERSION
  18  * 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS AVAILABLE AT
  19  * HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE" IN THE
  20  * TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION OF THIS
  21  * WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP PUBLIC
  22  * LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT THE
  23  * PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
  24  *---
  25  * Modification to OpenLDAP source by Novell, Inc.
  26  * April 2000 sfs  Added code to chase V3 referrals
  27  *  request.c - sending of ldap requests; handling of referrals
  28  */
  29
  30 #include "portable.h"
  31
  32 #include <stdio.h>
  33
  34 #include <ac/stdlib.h>
  35
  36 #include <ac/errno.h>
  37 #include <ac/socket.h>
  38 #include <ac/string.h>
  39 #include <ac/time.h>
  40 #include <ac/unistd.h>
  41
  42 #include "ldap-int.h"
  43 #include "lber.h"
  44
  45 static LDAPConn *find_connection LDAP_P(( LDAP *ld, LDAPURLDesc *srv, int any ));
  46 static void use_connection LDAP_P(( LDAP *ld, LDAPConn *lc ));
  47
  48 static BerElement *
  49 re_encode_request( LDAP *ld,
  50         BerElement *origber,
  51         ber_int_t msgid,
  52         int sref,
  53         LDAPURLDesc *srv,
  54         int *type );
  55
  56 BerElement *
  57 ldap_alloc_ber_with_options( LDAP *ld )
  58 {
  59         BerElement      *ber;
  60
  61     if (( ber = ber_alloc_t( ld->ld_lberoptions )) == NULL ) {
  62                 ld->ld_errno = LDAP_NO_MEMORY;
  63         }
  64
  65         return( ber );
  66 }
  67
  68
  69 void
  70 ldap_set_ber_options( LDAP *ld, BerElement *ber )
  71 {
  72         ber->ber_options = ld->ld_lberoptions;
  73 }
  74
  75
  76 ber_int_t
  77 ldap_send_initial_request(
  78         LDAP *ld,
  79         ber_tag_t msgtype,
  80         const char *dn,
  81         BerElement *ber )
  82 {
  83         LDAPURLDesc     *servers;
  84         int rc;
  85
  86 #ifdef NEW_LOGGING
  87         LDAP_LOG ( OPERATION, ENTRY, "ldap_send_initial_request\n", 0, 0, 0 );
  88 #else
  89         Debug( LDAP_DEBUG_TRACE, "ldap_send_initial_request\n", 0, 0, 0 );
  90 #endif
  91
  92         if ( ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, NULL ) == -1 ) {
  93                 /* not connected yet */
  94                 int rc = ldap_open_defconn( ld );
  95
  96                 if( rc < 0 ) {
  97                         ber_free( ber, 1 );
  98                         return( -1 );
  99                 }
 100
 101 #ifdef NEW_LOGGING
 102                 LDAP_LOG ( OPERATION, DETAIL1,
 103                         "ldap_send_initial_request: ldap_open_defconn: successful\n" ,
 104                         0, 0, 0);
 105 #else
 106                 Debug( LDAP_DEBUG_TRACE,
 107                         "ldap_open_defconn: successful\n",
 108                         0, 0, 0 );
 109 #endif
 110         }
 111
 112         {
 113                 /*
 114                  * use of DNS is turned off or this is an X.500 DN...
 115                  * use our default connection
 116                  */
 117                 servers = NULL;
 118         }
 119
 120 #ifdef LDAP_CONNECTIONLESS
 121         if (LDAP_IS_UDP(ld)) {
 122                 if (msgtype == LDAP_REQ_BIND) {
 123                         if (ld->ld_options.ldo_cldapdn)
 124                                 ldap_memfree(ld->ld_options.ldo_cldapdn);
 125                         ld->ld_options.ldo_cldapdn = ldap_strdup(dn);
 126                         return 0;
 127                 }
 128                 if (msgtype != LDAP_REQ_ABANDON && msgtype != LDAP_REQ_SEARCH)
 129                         return LDAP_PARAM_ERROR;
 130         }
 131 #endif
 132         rc = ldap_send_server_request( ld, ber, ld->ld_msgid, NULL,
 133                                                                         servers, NULL, NULL );
 134         if (servers)
 135                 ldap_free_urllist(servers);
 136         return(rc);
 137 }
 138
 139
 140 int
 141 ldap_int_flush_request(
 142         LDAP *ld,
 143         LDAPRequest *lr
 144 )
 145 {
 146         LDAPConn *lc = lr->lr_conn;
 147
 148         if ( ber_flush( lc->lconn_sb, lr->lr_ber, 0 ) != 0 ) {
 149                 if ( errno == EAGAIN ) {
 150                         /* need to continue write later */
 151                         lr->lr_status = LDAP_REQST_WRITING;
 152                         ldap_mark_select_write( ld, lc->lconn_sb );
 153                         ld->ld_errno = LDAP_BUSY;
 154                         return -2;
 155                 } else {
 156                         ld->ld_errno = LDAP_SERVER_DOWN;
 157                         ldap_free_request( ld, lr );
 158                         ldap_free_connection( ld, lc, 0, 0 );
 159                         return( -1 );
 160                 }
 161         } else {
 162                 if ( lr->lr_parent == NULL ) {
 163                         lr->lr_ber->ber_end = lr->lr_ber->ber_ptr;
 164                         lr->lr_ber->ber_ptr = lr->lr_ber->ber_buf;
 165                 }
 166                 lr->lr_status = LDAP_REQST_INPROGRESS;
 167
 168                 /* sent -- waiting for a response */
 169                 ldap_mark_select_read( ld, lc->lconn_sb );
 170         }
 171         return 0;
 172 }
 173
 174 int
 175 ldap_send_server_request(
 176         LDAP *ld,
 177         BerElement *ber,
 178         ber_int_t msgid,
 179         LDAPRequest *parentreq,
 180         LDAPURLDesc *srvlist,
 181         LDAPConn *lc,
 182         LDAPreqinfo *bind )
 183 {
 184         LDAPRequest     *lr;
 185         int incparent;
 186
 187 #ifdef NEW_LOGGING
 188         LDAP_LOG ( OPERATION, ENTRY, "ldap_send_server_request\n", 0, 0, 0 );
 189 #else
 190         Debug( LDAP_DEBUG_TRACE, "ldap_send_server_request\n", 0, 0, 0 );
 191 #endif
 192
 193         incparent = 0;
 194         ld->ld_errno = LDAP_SUCCESS;    /* optimistic */
 195
 196         if ( lc == NULL ) {
 197                 if ( srvlist == NULL ) {
 198                         lc = ld->ld_defconn;
 199                 } else {
 200                         if (( lc = find_connection( ld, srvlist, 1 )) ==
 201                             NULL ) {
 202                                 if ( (bind != NULL) && (parentreq != NULL) ) {
 203                                         /* Remember the bind in the parent */
 204                                         incparent = 1;
 205                                         ++parentreq->lr_outrefcnt;
 206                                 }
 207                                 lc = ldap_new_connection( ld, srvlist, 0, 1, bind );
 208                         }
 209                 }
 210         }
 211
 212         if ( lc == NULL || lc->lconn_status != LDAP_CONNST_CONNECTED ) {
 213                 ber_free( ber, 1 );
 214                 if ( ld->ld_errno == LDAP_SUCCESS ) {
 215                         ld->ld_errno = LDAP_SERVER_DOWN;
 216                 }
 217                 if ( incparent ) {
 218                         /* Forget about the bind */
 219                         --parentreq->lr_outrefcnt;
 220                 }
 221                 return( -1 );
 222         }
 223
 224         use_connection( ld, lc );
 225
 226         /* If we still have an incomplete write, try to finish it before
 227          * dealing with the new request. If we don't finish here, return
 228          * LDAP_BUSY and let the caller retry later. We only allow a single
 229          * request to be in WRITING state.
 230          */
 231         if ( ld->ld_requests &&
 232                 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
 233                 ldap_int_flush_request( ld, ld->ld_requests ) < 0 ) {
 234                 return -1;
 235         }
 236
 237         if (( lr = (LDAPRequest *)LDAP_CALLOC( 1, sizeof( LDAPRequest ))) ==
 238             NULL ) {
 239                 ld->ld_errno = LDAP_NO_MEMORY;
 240                 ldap_free_connection( ld, lc, 0, 0 );
 241                 ber_free( ber, 1 );
 242                 if ( incparent ) {
 243                         /* Forget about the bind */
 244                         --parentreq->lr_outrefcnt;
 245                 }
 246                 return( -1 );
 247         }
 248         lr->lr_msgid = msgid;
 249         lr->lr_status = LDAP_REQST_INPROGRESS;
 250         lr->lr_res_errno = LDAP_SUCCESS;        /* optimistic */
 251         lr->lr_ber = ber;
 252         lr->lr_conn = lc;
 253         if ( parentreq != NULL ) {      /* sub-request */
 254                 if ( !incparent ) {
 255                         /* Increment if we didn't do it before the bind */
 256                         ++parentreq->lr_outrefcnt;
 257                 }
 258                 lr->lr_origid = parentreq->lr_origid;
 259                 lr->lr_parentcnt = parentreq->lr_parentcnt + 1;
 260                 lr->lr_parent = parentreq;
 261                 lr->lr_refnext = parentreq->lr_child;
 262                 parentreq->lr_child = lr;
 263         } else {                        /* original request */
 264                 lr->lr_origid = lr->lr_msgid;
 265         }
 266
 267         if (( lr->lr_next = ld->ld_requests ) != NULL ) {
 268                 lr->lr_next->lr_prev = lr;
 269         }
 270         ld->ld_requests = lr;
 271         lr->lr_prev = NULL;
 272
 273         if ( ldap_int_flush_request( ld, lr ) == -1 ) {
 274                 return -1;
 275         }
 276
 277         ld->ld_errno = LDAP_SUCCESS;
 278         return( msgid );
 279 }
 280
 281 LDAPConn *
 282 ldap_new_connection( LDAP *ld, LDAPURLDesc *srvlist, int use_ldsb,
 283         int connect, LDAPreqinfo *bind )
 284 {
 285         LDAPConn        *lc;
 286         LDAPURLDesc     *srv;
 287         Sockbuf         *sb = NULL;
 288
 289 #ifdef NEW_LOGGING
 290         LDAP_LOG ( OPERATION, ENTRY, "ldap_new_connection\n", 0, 0, 0 );
 291 #else
 292         Debug( LDAP_DEBUG_TRACE, "ldap_new_connection\n", 0, 0, 0 );
 293 #endif
 294         /*
 295          * make a new LDAP server connection
 296          * XXX open connection synchronously for now
 297          */
 298         if (( lc = (LDAPConn *)LDAP_CALLOC( 1, sizeof( LDAPConn ))) == NULL ||
 299             ( !use_ldsb && ( (sb = ber_sockbuf_alloc()) == NULL ))) {
 300                 if ( lc != NULL ) {
 301                         LDAP_FREE( (char *)lc );
 302                 }
 303                 ld->ld_errno = LDAP_NO_MEMORY;
 304                 return( NULL );
 305         }
 306
 307         lc->lconn_sb = ( use_ldsb ) ? ld->ld_sb : sb;
 308
 309         if ( connect ) {
 310                 for ( srv = srvlist; srv != NULL; srv = srv->lud_next ) {
 311                         if ( ldap_int_open_connection( ld, lc, srv, 0 ) != -1 ) {
 312                                 break;
 313                         }
 314                 }
 315
 316                 if ( srv == NULL ) {
 317                         if ( !use_ldsb ) {
 318                                 ber_sockbuf_free( lc->lconn_sb );
 319                         }
 320                     LDAP_FREE( (char *)lc );
 321                     ld->ld_errno = LDAP_SERVER_DOWN;
 322                     return( NULL );
 323                 }
 324
 325                 lc->lconn_server = ldap_url_dup(srv);
 326         }
 327
 328         lc->lconn_status = LDAP_CONNST_CONNECTED;
 329         lc->lconn_next = ld->ld_conns;
 330         ld->ld_conns = lc;
 331
 332         /*
 333          * XXX for now, we always do a synchronous bind.  This will have
 334          * to change in the long run...
 335          */
 336         if ( bind != NULL) {
 337                 int             err = 0;
 338                 LDAPConn        *savedefconn;
 339
 340                 /* Set flag to prevent additional referrals from being processed on this
 341                  * connection until the bind has completed
 342                  */
 343                 lc->lconn_rebind_inprogress = 1;
 344                 /* V3 rebind function */
 345                 if ( ld->ld_rebind_proc != NULL) {
 346                         LDAPURLDesc     *srvfunc;
 347                         if( ( srvfunc = ldap_url_dup( srvlist)) == NULL) {
 348                                 ld->ld_errno = LDAP_NO_MEMORY;
 349                                 err = -1;
 350                         } else {
 351                                 savedefconn = ld->ld_defconn;
 352                                 ++lc->lconn_refcnt;     /* avoid premature free */
 353                                 ld->ld_defconn = lc;
 354
 355 #ifdef NEW_LOGGING
 356                                 LDAP_LOG ( OPERATION, DETAIL1,
 357                                         "ldap_new_connection: Call application rebind_proc\n",
 358                                         0, 0, 0 );
 359 #else
 360                                 Debug( LDAP_DEBUG_TRACE, "Call application rebind_proc\n", 0, 0, 0);
 361 #endif
 362                                 err = (*ld->ld_rebind_proc)( ld,
 363                                         bind->ri_url, bind->ri_request, bind->ri_msgid,
 364                                         ld->ld_rebind_params );
 365
 366                                 ld->ld_defconn = savedefconn;
 367                                 --lc->lconn_refcnt;
 368
 369                                 if( err != 0) {
 370                                 err = -1;
 371                                         ldap_free_connection( ld, lc, 1, 0 );
 372                                         lc = NULL;
 373                         }
 374                                 ldap_free_urldesc( srvfunc);
 375                 }
 376                 } else {
 377                         savedefconn = ld->ld_defconn;
 378                         ++lc->lconn_refcnt;     /* avoid premature free */
 379                         ld->ld_defconn = lc;
 380
 381 #ifdef NEW_LOGGING
 382                         LDAP_LOG ( OPERATION, DETAIL1,
 383                                 "ldap_new_connection: anonymous rebind via ldap_bind_s\n",
 384                                 0, 0, 0 );
 385 #else
 386                         Debug( LDAP_DEBUG_TRACE, "anonymous rebind via ldap_bind_s\n", 0, 0, 0);
 387 #endif
 388                         if ( ldap_bind_s( ld, "", "", LDAP_AUTH_SIMPLE ) != LDAP_SUCCESS ) {
 389                                 err = -1;
 390                         }
 391                         ld->ld_defconn = savedefconn;
 392                         --lc->lconn_refcnt;
 393
 394                 if ( err != 0 ) {
 395                         ldap_free_connection( ld, lc, 1, 0 );
 396                         lc = NULL;
 397                 }
 398         }
 399                 if( lc != NULL)
 400                         lc->lconn_rebind_inprogress = 0;
 401         }
 402
 403         return( lc );
 404 }
 405
 406
 407 static LDAPConn *
 408 find_connection( LDAP *ld, LDAPURLDesc *srv, int any )
 409 /*
 410  * return an existing connection (if any) to the server srv
 411  * if "any" is non-zero, check for any server in the "srv" chain
 412  */
 413 {
 414         LDAPConn        *lc;
 415         LDAPURLDesc     *ls;
 416
 417         for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
 418                 for ( ls = srv; ls != NULL; ls = ls->lud_next ) {
 419                         if ( lc->lconn_server->lud_host != NULL &&
 420                                 *lc->lconn_server->lud_host != '\0' &&
 421                             ls->lud_host != NULL && *ls->lud_host != '\0' &&
 422                                 strcasecmp( ls->lud_host, lc->lconn_server->lud_host ) == 0
 423                             && ls->lud_port == lc->lconn_server->lud_port ) {
 424                                 return lc;
 425                         }
 426                         if ( !any ) {
 427                                 break;
 428                         }
 429                 }
 430         }
 431
 432         return NULL;
 433 }
 434
 435
 436
 437 static void
 438 use_connection( LDAP *ld, LDAPConn *lc )
 439 {
 440         ++lc->lconn_refcnt;
 441         lc->lconn_lastused = time( NULL );
 442 }
 443
 444
 445 void
 446 ldap_free_connection( LDAP *ld, LDAPConn *lc, int force, int unbind )
 447 {
 448         LDAPConn        *tmplc, *prevlc;
 449
 450 #ifdef NEW_LOGGING
 451         LDAP_LOG ( OPERATION, ENTRY, "ldap_free_connection\n", 0, 0, 0 );
 452 #else
 453         Debug( LDAP_DEBUG_TRACE, "ldap_free_connection\n", 0, 0, 0 );
 454 #endif
 455
 456         if ( force || --lc->lconn_refcnt <= 0 ) {
 457                 if ( lc->lconn_status == LDAP_CONNST_CONNECTED ) {
 458                         ldap_mark_select_clear( ld, lc->lconn_sb );
 459                         if ( unbind ) {
 460                                 ldap_send_unbind( ld, lc->lconn_sb, NULL, NULL );
 461                         }
 462                 }
 463
 464                 if( lc->lconn_ber != NULL ) {
 465                         ber_free( lc->lconn_ber, 1 );
 466                 }
 467
 468                 ldap_int_sasl_close( ld, lc );
 469
 470                 prevlc = NULL;
 471                 for ( tmplc = ld->ld_conns; tmplc != NULL;
 472                     tmplc = tmplc->lconn_next ) {
 473                         if ( tmplc == lc ) {
 474                                 if ( prevlc == NULL ) {
 475                                     ld->ld_conns = tmplc->lconn_next;
 476                                 } else {
 477                                     prevlc->lconn_next = tmplc->lconn_next;
 478                                 }
 479                                 break;
 480                         }
 481                         prevlc = tmplc;
 482                 }
 483                 ldap_free_urllist( lc->lconn_server );
 484 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
 485                 if ( lc->lconn_krbinstance != NULL ) {
 486                         LDAP_FREE( lc->lconn_krbinstance );
 487                 }
 488 #endif
 489                 if ( lc->lconn_sb != ld->ld_sb ) {
 490                         ber_sockbuf_free( lc->lconn_sb );
 491                 }
 492                 if( lc->lconn_rebind_queue != NULL) {
 493                         int i;
 494                         for( i = 0; lc->lconn_rebind_queue[i] != NULL; i++) {
 495                                 LDAP_VFREE(lc->lconn_rebind_queue[i]);
 496                         }
 497                         LDAP_FREE( lc->lconn_rebind_queue);
 498                 }
 499                 LDAP_FREE( lc );
 500 #ifdef NEW_LOGGING
 501                 LDAP_LOG ( OPERATION, RESULTS,
 502                         "ldap_free_connection: actually freed\n", 0, 0, 0 );
 503 #else
 504                 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: actually freed\n",
 505                     0, 0, 0 );
 506 #endif
 507         } else {
 508                 lc->lconn_lastused = time( NULL );
 509 #ifdef NEW_LOGGING
 510                 LDAP_LOG ( OPERATION, RESULTS, "ldap_free_connection: refcnt %d\n",
 511                         lc->lconn_refcnt, 0, 0 );
 512 #else
 513                 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: refcnt %d\n",
 514                     lc->lconn_refcnt, 0, 0 );
 515 #endif
 516         }
 517 }
 518
 519
 520 #ifdef LDAP_DEBUG
 521 void
 522 ldap_dump_connection( LDAP *ld, LDAPConn *lconns, int all )
 523 {
 524         LDAPConn        *lc;
 525         char            timebuf[32];
 526
 527         fprintf( stderr, "** Connection%s:\n", all ? "s" : "" );
 528         for ( lc = lconns; lc != NULL; lc = lc->lconn_next ) {
 529                 if ( lc->lconn_server != NULL ) {
 530                         fprintf( stderr, "* host: %s  port: %d%s\n",
 531                             ( lc->lconn_server->lud_host == NULL ) ? "(null)"
 532                             : lc->lconn_server->lud_host,
 533                             lc->lconn_server->lud_port, ( lc->lconn_sb ==
 534                             ld->ld_sb ) ? "  (default)" : "" );
 535                 }
 536                 fprintf( stderr, "  refcnt: %d  status: %s\n", lc->lconn_refcnt,
 537                     ( lc->lconn_status == LDAP_CONNST_NEEDSOCKET ) ?
 538                     "NeedSocket" : ( lc->lconn_status ==
 539                     LDAP_CONNST_CONNECTING ) ? "Connecting" : "Connected" );
 540                 fprintf( stderr, "  last used: %s",
 541                     ldap_pvt_ctime( &lc->lconn_lastused, timebuf ));
 542                 if( lc->lconn_rebind_inprogress ) {
 543                         fprintf( stderr, "  rebind in progress\n");
 544                         if( lc->lconn_rebind_queue != NULL) {
 545                                 int i = 0;
 546                                 for( ;lc->lconn_rebind_queue[i] != NULL; i++) {
 547                                         int j = 0;
 548                                         for( ;lc->lconn_rebind_queue[i][j] != 0; j++) {
 549                                                 fprintf( stderr, "    queue %d entry %d - %s\n",
 550                                                         i, j, lc->lconn_rebind_queue[i][j]);
 551                                         }
 552                                 }
 553                         } else {
 554                                 fprintf( stderr, "    queue is empty\n");
 555                         }
 556                 }
 557                 fprintf(stderr, "\n");
 558                 if ( !all ) {
 559                         break;
 560                 }
 561         }
 562 }
 563
 564
 565 void
 566 ldap_dump_requests_and_responses( LDAP *ld )
 567 {
 568         LDAPRequest     *lr;
 569         LDAPMessage     *lm, *l;
 570
 571         fprintf( stderr, "** Outstanding Requests:\n" );
 572         if (( lr = ld->ld_requests ) == NULL ) {
 573                 fprintf( stderr, "   Empty\n" );
 574         }
 575         for ( ; lr != NULL; lr = lr->lr_next ) {
 576             fprintf( stderr, " * msgid %d,  origid %d, status %s\n",
 577                 lr->lr_msgid, lr->lr_origid,
 578                 ( lr->lr_status == LDAP_REQST_INPROGRESS ) ? "InProgress" :
 579                 ( lr->lr_status == LDAP_REQST_CHASINGREFS ) ? "ChasingRefs" :
 580                 ( lr->lr_status == LDAP_REQST_NOTCONNECTED ) ? "NotConnected" :
 581                 ( lr->lr_status == LDAP_REQST_WRITING) ? "Writing" :
 582                 ( lr->lr_status == LDAP_REQST_COMPLETED ? "Request Completed" : "Invalid Status"));
 583             fprintf( stderr, "   outstanding referrals %d, parent count %d\n",
 584                     lr->lr_outrefcnt, lr->lr_parentcnt );
 585         }
 586
 587         fprintf( stderr, "** Response Queue:\n" );
 588         if (( lm = ld->ld_responses ) == NULL ) {
 589                 fprintf( stderr, "   Empty\n" );
 590         }
 591         for ( ; lm != NULL; lm = lm->lm_next ) {
 592                 fprintf( stderr, " * msgid %d,  type %lu\n",
 593                     lm->lm_msgid, (unsigned long) lm->lm_msgtype );
 594                 if (( l = lm->lm_chain ) != NULL ) {
 595                         fprintf( stderr, "   chained responses:\n" );
 596                         for ( ; l != NULL; l = l->lm_chain ) {
 597                                 fprintf( stderr,
 598                                     "  * msgid %d,  type %lu\n",
 599                                     l->lm_msgid,
 600                                     (unsigned long) l->lm_msgtype );
 601                         }
 602                 }
 603         }
 604 }
 605 #endif /* LDAP_DEBUG */
 606
 607 void
 608 ldap_free_request_int( LDAP *ld, LDAPRequest *lr )
 609 {
 610         if ( lr->lr_prev == NULL ) {
 611                 ld->ld_requests = lr->lr_next;
 612         } else {
 613                 lr->lr_prev->lr_next = lr->lr_next;
 614         }
 615
 616         if ( lr->lr_next != NULL ) {
 617                 lr->lr_next->lr_prev = lr->lr_prev;
 618         }
 619
 620         if ( lr->lr_ber != NULL ) {
 621                 ber_free( lr->lr_ber, 1 );
 622         }
 623
 624         if ( lr->lr_res_error != NULL ) {
 625                 LDAP_FREE( lr->lr_res_error );
 626         }
 627
 628         if ( lr->lr_res_matched != NULL ) {
 629                 LDAP_FREE( lr->lr_res_matched );
 630         }
 631
 632         LDAP_FREE( lr );
 633 }
 634
 635 void
 636 ldap_free_request( LDAP *ld, LDAPRequest *lr )
 637 {
 638         LDAPRequest     **ttmplr;
 639
 640 #ifdef NEW_LOGGING
 641         LDAP_LOG ( OPERATION, ARGS, "ldap_free_request (origid %d, msgid %d)\n",
 642                 lr->lr_origid, lr->lr_msgid, 0 );
 643 #else
 644         Debug( LDAP_DEBUG_TRACE, "ldap_free_request (origid %d, msgid %d)\n",
 645                 lr->lr_origid, lr->lr_msgid, 0 );
 646 #endif
 647
 648         if ( lr->lr_parent != NULL ) {
 649                 --lr->lr_parent->lr_outrefcnt;
 650                 for ( ttmplr = &lr->lr_parent->lr_child; *ttmplr && *ttmplr != lr; ttmplr = &(*ttmplr)->lr_refnext );
 651                 if ( *ttmplr == lr )
 652                         *ttmplr = lr->lr_refnext;
 653         } else {
 654                 /* free all referrals (child requests) */
 655                 while ( lr->lr_child )
 656                         ldap_free_request( ld, lr->lr_child );
 657         }
 658         ldap_free_request_int( ld, lr );
 659 }
 660
 661
 662 /*
 663  * Chase v3 referrals
 664  *
 665  * Parameters:
 666  *  (IN) ld = LDAP connection handle
 667  *  (IN) lr = LDAP Request structure
 668  *  (IN) refs = array of pointers to referral strings that we will chase
 669  *              The array will be free'd by this function when no longer needed
 670  *  (IN) sref != 0 if following search reference
 671  *  (OUT) errstrp = Place to return a string of referrals which could not be followed
 672  *  (OUT) hadrefp = 1 if sucessfully followed referral
 673  *
 674  * Return value - number of referrals followed
 675  */
 676 int
 677 ldap_chase_v3referrals( LDAP *ld, LDAPRequest *lr, char **refs, int sref, char **errstrp, int *hadrefp )
 678 {
 679         char            *unfollowed;
 680         int                      unfollowedcnt = 0;
 681         LDAPRequest     *origreq;
 682         LDAPURLDesc     *srv = NULL;
 683         BerElement      *ber;
 684         char            **refarray = NULL;
 685         LDAPConn        *lc;
 686         int                      rc, count, i, j;
 687         LDAPreqinfo  rinfo;
 688
 689         ld->ld_errno = LDAP_SUCCESS;    /* optimistic */
 690         *hadrefp = 0;
 691
 692 #ifdef NEW_LOGGING
 693         LDAP_LOG ( OPERATION, ENTRY, "ldap_chase_v3referrals\n", 0, 0, 0 );
 694 #else
 695         Debug( LDAP_DEBUG_TRACE, "ldap_chase_v3referrals\n", 0, 0, 0 );
 696 #endif
 697
 698         unfollowed = NULL;
 699         rc = count = 0;
 700
 701         /* If no referrals in array, return */
 702         if ( (refs == NULL) || ( (refs)[0] == NULL) ) {
 703                 rc = 0;
 704                 goto done;
 705         }
 706
 707         /* Check for hop limit exceeded */
 708         if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
 709 #ifdef NEW_LOGGING
 710                 LDAP_LOG ( OPERATION, DETAIL1,
 711                         "ldap_chase_v3referrals: more than %d referral hops (dropping)\n",
 712                         ld->ld_refhoplimit, 0, 0 );
 713 #else
 714                 Debug( LDAP_DEBUG_ANY,
 715                     "more than %d referral hops (dropping)\n", ld->ld_refhoplimit, 0, 0 );
 716 #endif
 717                 ld->ld_errno = LDAP_REFERRAL_LIMIT_EXCEEDED;
 718             rc = -1;
 719                 goto done;
 720         }
 721
 722         /* find original request */
 723         for ( origreq = lr;
 724                 origreq->lr_parent != NULL;
 725                 origreq = origreq->lr_parent )
 726         {
 727                 /* empty */ ;
 728         }
 729
 730         refarray = refs;
 731         refs = NULL;
 732         /* parse out & follow referrals */
 733         for( i=0; refarray[i] != NULL; i++) {
 734                 /* Parse the referral URL */
 735                 if (( rc = ldap_url_parse_ext( refarray[i], &srv)) != LDAP_SUCCESS) {
 736                         ld->ld_errno = rc;
 737                         rc = -1;
 738                         goto done;
 739                 }
 740
 741                 if( srv->lud_crit_exts ) {
 742                         /* we do not support any extensions */
 743                         ld->ld_errno = LDAP_NOT_SUPPORTED;
 744                         rc = -1;
 745                         goto done;
 746                 }
 747
 748                 /* treat ldap://hostpart and ldap://hostpart/ the same */
 749                 if ( srv->lud_dn && srv->lud_dn[0] == '\0' ) {
 750                         LDAP_FREE( srv->lud_dn );
 751                         srv->lud_dn = NULL;
 752                 }
 753
 754                 /* check connection for re-bind in progress */
 755                 if (( lc = find_connection( ld, srv, 1 )) != NULL ) {
 756                         if( lc->lconn_rebind_inprogress) {
 757                                 /* We are already chasing a referral or search reference and a
 758                                  * bind on that connection is in progress.  We must queue
 759                                  * referrals on that connection, so we don't get a request
 760                                  * going out before the bind operation completes. This happens
 761                                  * if two search references come in one behind the other
 762                                  * for the same server with different contexts.
 763                                  */
 764 #ifdef NEW_LOGGING
 765                                 LDAP_LOG ( OPERATION, DETAIL1,
 766                                         "ldap_chase_v3referrals: queue referral \"%s\"\n",
 767                                         refarray[i], 0, 0 );
 768 #else
 769                                 Debug( LDAP_DEBUG_TRACE,
 770                                         "ldap_chase_v3referrals: queue referral \"%s\"\n",
 771                                         refarray[i], 0, 0);
 772 #endif
 773                                 if( lc->lconn_rebind_queue == NULL ) {
 774                                         /* Create a referral list */
 775                                         lc->lconn_rebind_queue =
 776                                                 (char ***) LDAP_MALLOC( sizeof(void *) * 2);
 777
 778                                         if( lc->lconn_rebind_queue == NULL) {
 779                                                 ld->ld_errno = LDAP_NO_MEMORY;
 780                                                 rc = -1;
 781                                                 goto done;
 782                                         }
 783
 784                                         lc->lconn_rebind_queue[0] = refarray;
 785                                         lc->lconn_rebind_queue[1] = NULL;
 786                                         refarray = NULL;
 787
 788                                 } else {
 789                                         /* Count how many referral arrays we already have */
 790                                         for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++) {
 791                                                 /* empty */;
 792                                         }
 793
 794                                         /* Add the new referral to the list */
 795                                         lc->lconn_rebind_queue = (char ***) LDAP_REALLOC(
 796                                                 lc->lconn_rebind_queue, sizeof(void *) * (j + 2));
 797
 798                                         if( lc->lconn_rebind_queue == NULL ) {
 799                                                 ld->ld_errno = LDAP_NO_MEMORY;
 800                                                 rc = -1;
 801                                                 goto done;
 802                                         }
 803                                         lc->lconn_rebind_queue[j] = refarray;
 804                                         lc->lconn_rebind_queue[j+1] = NULL;
 805                                         refarray = NULL;
 806                                 }
 807
 808                                 /* We have queued the referral/reference, now just return */
 809                                 rc = 0;
 810                                 *hadrefp = 1;
 811                                 count = 1; /* Pretend we already followed referral */
 812                                 goto done;
 813                         }
 814                 }
 815                 /* Re-encode the request with the new starting point of the search.
 816                  * Note: In the future we also need to replace the filter if one
 817                  * was provided with the search reference
 818                  */
 819
 820                 /* For references we don't want old dn if new dn empty */
 821                 if ( sref && srv->lud_dn == NULL ) {
 822                         srv->lud_dn = LDAP_STRDUP( "" );
 823                 }
 824
 825                 ber = re_encode_request( ld, origreq->lr_ber, ++ld->ld_msgid,
 826                         sref, srv, &rinfo.ri_request );
 827
 828                 if( ber == NULL ) {
 829                         ld->ld_errno = LDAP_ENCODING_ERROR;
 830                         rc = -1;
 831                         goto done;
 832                 }
 833
 834 #ifdef NEW_LOGGING
 835                 LDAP_LOG ( OPERATION, DETAIL1,
 836                         "ldap_chase_v3referrals: msgid %d, url \"%s\"\n",
 837                         lr->lr_msgid, refarray[i], 0 );
 838 #else
 839                 Debug( LDAP_DEBUG_TRACE,
 840                         "ldap_chase_v3referral: msgid %d, url \"%s\"\n",
 841                         lr->lr_msgid, refarray[i], 0);
 842 #endif
 843
 844                 /* Send the new request to the server - may require a bind */
 845                 rinfo.ri_msgid = origreq->lr_origid;
 846                 rinfo.ri_url = refarray[i];
 847                 if ( (rc = ldap_send_server_request( ld, ber, ld->ld_msgid,
 848                         origreq, srv, NULL, &rinfo )) < 0 ) {
 849                         /* Failure, try next referral in the list */
 850 #ifdef NEW_LOGGING
 851                         LDAP_LOG ( OPERATION, ERR,
 852                         "ldap_chase_v3referrals: Unable to chase referral \"%s\" (%s)\n",
 853                         refarray[i], ldap_err2string( ld->ld_errno ), 0 );
 854 #else
 855                         Debug( LDAP_DEBUG_ANY, "Unable to chase referral \"%s\" (%s)\n",
 856                                 refarray[i], ldap_err2string( ld->ld_errno ), 0);
 857 #endif
 858                         unfollowedcnt += ldap_append_referral( ld, &unfollowed, refarray[i]);
 859                         ldap_free_urllist(srv);
 860                         srv = NULL;
 861                 } else {
 862                         /* Success, no need to try this referral list further */
 863                         rc = 0;
 864                         ++count;
 865                         *hadrefp = 1;
 866
 867                         /* check if there is a queue of referrals that came in during bind */
 868                         if( lc == NULL) {
 869                                 if (( lc = find_connection( ld, srv, 1 )) == NULL ) {
 870                                         ld->ld_errno = LDAP_OPERATIONS_ERROR;
 871                                         rc = -1;
 872                                         goto done;
 873                                 }
 874                         }
 875
 876                         if( lc->lconn_rebind_queue != NULL) {
 877                                 /* Release resources of previous list */
 878                                 LDAP_VFREE(refarray);
 879                                 refarray = NULL;
 880                                 ldap_free_urllist(srv);
 881                                 srv = NULL;
 882
 883                                 /* Pull entries off end of queue so list always null terminated */
 884                                 for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++) {
 885                                         ;
 886                                 }
 887                                 refarray = lc->lconn_rebind_queue[j-1];
 888                                 lc->lconn_rebind_queue[j-1] = NULL;
 889                                 /* we pulled off last entry from queue, free queue */
 890                                 if ( j == 1 ) {
 891                                         LDAP_FREE( lc->lconn_rebind_queue);
 892                                         lc->lconn_rebind_queue = NULL;
 893                                 }
 894                                 /* restart the loop the with new referral list */
 895                                 i = -1;
 896                                 continue;
 897                         }
 898                         break; /* referral followed, break out of for loop */
 899                 }
 900         } /* end for loop */
 901 done:
 902         LDAP_VFREE(refarray);
 903         ldap_free_urllist(srv);
 904         LDAP_FREE( *errstrp );
 905
 906         if( rc == 0) {
 907                 *errstrp = NULL;
 908                 LDAP_FREE( unfollowed );
 909                 return count;
 910         } else {
 911                 ld->ld_errno = LDAP_REFERRAL;
 912                 *errstrp = unfollowed;
 913                 return rc;
 914         }
 915 }
 916
 917 /*
 918  * XXX merging of errors in this routine needs to be improved
 919  */
 920 int
 921 ldap_chase_referrals( LDAP *ld,
 922         LDAPRequest *lr,
 923         char **errstrp,
 924         int sref,
 925         int *hadrefp )
 926 {
 927         int             rc, count;
 928         unsigned        len;
 929         char            *p, *ref, *unfollowed;
 930         LDAPRequest     *origreq;
 931         LDAPURLDesc     *srv;
 932         BerElement      *ber;
 933         LDAPreqinfo  rinfo;
 934
 935 #ifdef NEW_LOGGING
 936         LDAP_LOG ( OPERATION, ENTRY, "ldap_chase_referrals\n", 0, 0, 0 );
 937 #else
 938         Debug( LDAP_DEBUG_TRACE, "ldap_chase_referrals\n", 0, 0, 0 );
 939 #endif
 940
 941         ld->ld_errno = LDAP_SUCCESS;    /* optimistic */
 942         *hadrefp = 0;
 943
 944         if ( *errstrp == NULL ) {
 945                 return( 0 );
 946         }
 947
 948         len = strlen( *errstrp );
 949         for ( p = *errstrp; len >= LDAP_REF_STR_LEN; ++p, --len ) {
 950                 if ( strncasecmp( p, LDAP_REF_STR, LDAP_REF_STR_LEN ) == 0 ) {
 951                         *p = '\0';
 952                         p += LDAP_REF_STR_LEN;
 953                         break;
 954                 }
 955         }
 956
 957         if ( len < LDAP_REF_STR_LEN ) {
 958                 return( 0 );
 959         }
 960
 961         if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
 962 #ifdef NEW_LOGGING
 963                 LDAP_LOG ( OPERATION, ENTRY,
 964                         "ldap_chase_referrals: more than %d referral hops (dropping)\n",
 965                         ld->ld_refhoplimit, 0, 0 );
 966 #else
 967                 Debug( LDAP_DEBUG_ANY,
 968                     "more than %d referral hops (dropping)\n",
 969                     ld->ld_refhoplimit, 0, 0 );
 970 #endif
 971                     /* XXX report as error in ld->ld_errno? */
 972                     return( 0 );
 973         }
 974
 975         /* find original request */
 976         for ( origreq = lr; origreq->lr_parent != NULL;
 977              origreq = origreq->lr_parent ) {
 978                 /* empty */;
 979         }
 980
 981         unfollowed = NULL;
 982         rc = count = 0;
 983
 984         /* parse out & follow referrals */
 985         for ( ref = p; rc == 0 && ref != NULL; ref = p ) {
 986                 if (( p = strchr( ref, '\n' )) != NULL ) {
 987                         *p++ = '\0';
 988                 } else {
 989                         p = NULL;
 990                 }
 991
 992                 rc = ldap_url_parse_ext( ref, &srv );
 993
 994                 if ( rc != LDAP_URL_SUCCESS ) {
 995 #ifdef NEW_LOGGING
 996                         LDAP_LOG ( OPERATION, DETAIL1,
 997                                 "ldap_chase_referrals: ignoring unknown referral <%s>\n",
 998                                 ref, 0, 0 );
 999 #else
1000                         Debug( LDAP_DEBUG_TRACE,
1001                             "ignoring unknown referral <%s>\n", ref, 0, 0 );
1002 #endif
1003                         rc = ldap_append_referral( ld, &unfollowed, ref );
1004                         *hadrefp = 1;
1005                         continue;
1006                 }
1007
1008                 if( srv->lud_dn != NULL && srv->lud_dn == '\0' ) {
1009                         LDAP_FREE( srv->lud_dn );
1010                         srv->lud_dn = NULL;
1011                 }
1012
1013 #ifdef NEW_LOGGING
1014                 LDAP_LOG ( OPERATION, DETAIL1,
1015                         "ldap_chase_referrals: chasing LDAP referral <%s>\n", ref, 0, 0 );
1016 #else
1017                 Debug( LDAP_DEBUG_TRACE,
1018                     "chasing LDAP referral: <%s>\n", ref, 0, 0 );
1019 #endif
1020
1021                 *hadrefp = 1;
1022
1023                 ber = re_encode_request( ld, origreq->lr_ber,
1024                     ++ld->ld_msgid, sref, srv, &rinfo.ri_request );
1025
1026                 if( ber == NULL ) {
1027                         return -1 ;
1028                 }
1029
1030                 /* copy the complete referral for rebind process */
1031                 rinfo.ri_url = LDAP_STRDUP( ref );
1032
1033                 rinfo.ri_msgid = origreq->lr_origid;
1034
1035                 rc = ldap_send_server_request( ld, ber, ld->ld_msgid,
1036                     lr, srv, NULL, &rinfo );
1037
1038                 LDAP_FREE( rinfo.ri_url );
1039
1040                 if( rc >= 0 ) {
1041                         ++count;
1042                 } else {
1043 #ifdef NEW_LOGGING
1044                         LDAP_LOG ( OPERATION, ERR,
1045                                 "ldap_chase_referrals: Unable to chase referral <%s>\n",
1046                                 ldap_err2string( ld->ld_errno), 0, 0 );
1047 #else
1048                         Debug( LDAP_DEBUG_ANY,
1049                             "Unable to chase referral (%s)\n",
1050                             ldap_err2string( ld->ld_errno ), 0, 0 );
1051 #endif
1052                         rc = ldap_append_referral( ld, &unfollowed, ref );
1053                 }
1054
1055                 ldap_free_urllist(srv);
1056         }
1057
1058         LDAP_FREE( *errstrp );
1059         *errstrp = unfollowed;
1060
1061         return(( rc == 0 ) ? count : rc );
1062 }
1063
1064
1065 int
1066 ldap_append_referral( LDAP *ld, char **referralsp, char *s )
1067 {
1068         int     first;
1069
1070         if ( *referralsp == NULL ) {
1071                 first = 1;
1072                 *referralsp = (char *)LDAP_MALLOC( strlen( s ) + LDAP_REF_STR_LEN
1073                     + 1 );
1074         } else {
1075                 first = 0;
1076                 *referralsp = (char *)LDAP_REALLOC( *referralsp,
1077                     strlen( *referralsp ) + strlen( s ) + 2 );
1078         }
1079
1080         if ( *referralsp == NULL ) {
1081                 ld->ld_errno = LDAP_NO_MEMORY;
1082                 return( -1 );
1083         }
1084
1085         if ( first ) {
1086                 strcpy( *referralsp, LDAP_REF_STR );
1087         } else {
1088                 strcat( *referralsp, "\n" );
1089         }
1090         strcat( *referralsp, s );
1091
1092         return( 0 );
1093 }
1094
1095
1096
1097 static BerElement *
1098 re_encode_request( LDAP *ld,
1099         BerElement *origber,
1100         ber_int_t msgid,
1101         int sref,
1102         LDAPURLDesc *srv,
1103         int *type )
1104 {
1105         /*
1106          * XXX this routine knows way too much about how the lber library works!
1107          */
1108         ber_int_t       along;
1109         ber_tag_t       tag;
1110         ber_tag_t       rtag;
1111         ber_int_t       ver;
1112         ber_int_t       scope;
1113         int             rc;
1114         BerElement      tmpber, *ber;
1115         char            *orig_dn;
1116         char            *dn;
1117
1118 #ifdef NEW_LOGGING
1119         LDAP_LOG ( OPERATION, ARGS,
1120                 "re_encode_request: new msgid %ld, new dn <%s>\n",
1121                 (long) msgid,
1122                 ( srv == NULL || srv->lud_dn == NULL ) ? "NONE" : srv->lud_dn, 0 );
1123 #else
1124         Debug( LDAP_DEBUG_TRACE,
1125             "re_encode_request: new msgid %ld, new dn <%s>\n",
1126             (long) msgid,
1127                 ( srv == NULL || srv->lud_dn == NULL) ? "NONE" : srv->lud_dn, 0 );
1128 #endif
1129
1130         tmpber = *origber;
1131
1132         /*
1133          * all LDAP requests are sequences that start with a message id.
1134          * For all except delete, this is followed by a sequence that is
1135          * tagged with the operation code.  For delete, the provided DN
1136          * is not wrapped by a sequence.
1137          */
1138         rtag = ber_scanf( &tmpber, "{it", /*}*/ &along, &tag );
1139
1140         if ( rtag == LBER_ERROR ) {
1141                 ld->ld_errno = LDAP_DECODING_ERROR;
1142                 return( NULL );
1143         }
1144
1145         assert( tag != 0);
1146         if ( tag == LDAP_REQ_BIND ) {
1147                 /* bind requests have a version number before the DN & other stuff */
1148                 rtag = ber_scanf( &tmpber, "{ia" /*}*/, &ver, &orig_dn );
1149
1150         } else if ( tag == LDAP_REQ_DELETE ) {
1151                 /* delete requests don't have a DN wrapping sequence */
1152                 rtag = ber_scanf( &tmpber, "a", &orig_dn );
1153
1154         } else if ( tag == LDAP_REQ_SEARCH ) {
1155                 /* search requests need to be re-scope-ed */
1156                 rtag = ber_scanf( &tmpber, "{ae" /*"}"*/, &orig_dn, &scope );
1157
1158                 if( srv->lud_scope != LDAP_SCOPE_DEFAULT ) {
1159                         /* use the scope provided in reference */
1160                         scope = srv->lud_scope;
1161
1162                 } else if ( sref && scope != LDAP_SCOPE_SUBTREE ) {
1163                         /* use scope implied by previous operation */
1164                         /*   base -> base */
1165                         /*   one -> base */
1166                         /*   subtree -> subtree */
1167                         scope = LDAP_SCOPE_BASE;
1168                 }
1169
1170         } else {
1171                 rtag = ber_scanf( &tmpber, "{a" /*}*/, &orig_dn );
1172         }
1173
1174         if( rtag == LBER_ERROR ) {
1175                 ld->ld_errno = LDAP_DECODING_ERROR;
1176                 return NULL;
1177         }
1178
1179         if (( ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
1180                 return NULL;
1181         }
1182
1183         if ( srv->lud_dn == NULL ) {
1184                 dn = orig_dn;
1185         } else {
1186                 dn = srv->lud_dn;
1187         }
1188
1189         if ( tag == LDAP_REQ_BIND ) {
1190                 rc = ber_printf( ber, "{it{is" /*}}*/, msgid, tag, ver, dn );
1191         } else if ( tag == LDAP_REQ_DELETE ) {
1192                 rc = ber_printf( ber, "{itsN}", msgid, tag, dn );
1193         } else if ( tag == LDAP_REQ_SEARCH ) {
1194                 rc = ber_printf( ber, "{it{se" /*}}*/, msgid, tag, dn, scope );
1195         } else {
1196                 rc = ber_printf( ber, "{it{s" /*}}*/, msgid, tag, dn );
1197         }
1198
1199         LDAP_FREE( orig_dn );
1200
1201         if ( rc == -1 ) {
1202                 ld->ld_errno = LDAP_ENCODING_ERROR;
1203                 ber_free( ber, 1 );
1204                 return NULL;
1205         }
1206
1207         if ( tag != LDAP_REQ_DELETE && (
1208                 ber_write(ber, tmpber.ber_ptr, ( tmpber.ber_end - tmpber.ber_ptr ), 0)
1209                 != ( tmpber.ber_end - tmpber.ber_ptr ) ||
1210             ber_printf( ber, /*{{*/ "N}N}" ) == -1 ) )
1211         {
1212                 ld->ld_errno = LDAP_ENCODING_ERROR;
1213                 ber_free( ber, 1 );
1214                 return NULL;
1215         }
1216
1217 #ifdef LDAP_DEBUG
1218         if ( ldap_debug & LDAP_DEBUG_PACKETS ) {
1219 #ifdef NEW_LOGGING
1220                 LDAP_LOG ( OPERATION, DETAIL1,
1221                         "re_encode_request: new request is:\n", 0, 0, 0 );
1222 #else
1223                 Debug( LDAP_DEBUG_ANY, "re_encode_request new request is:\n",
1224                     0, 0, 0 );
1225 #endif
1226                 ber_log_dump( LDAP_DEBUG_BER, ldap_debug, ber, 0 );
1227         }
1228 #endif /* LDAP_DEBUG */
1229
1230         *type = tag;    /* return request type */
1231         return ber;
1232 }
1233
1234
1235 LDAPRequest *
1236 ldap_find_request_by_msgid( LDAP *ld, ber_int_t msgid )
1237 {
1238         LDAPRequest     *lr;
1239
1240         for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
1241                 if( lr->lr_status == LDAP_REQST_COMPLETED ) {
1242                         continue;       /* Skip completed requests */
1243                 }
1244                 if ( msgid == lr->lr_msgid ) {
1245                         break;
1246                 }
1247         }
1248
1249         return( lr );
1250 }
1251
1252