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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2003 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 /* Note: A verbatim copy of version 2.0.1 of the OpenLDAP Public License
  30  * can be found in the file "build/LICENSE-2.0.1" in this distribution
  31  * of OpenLDAP Software.
  32  */
  33
  34 #include "portable.h"
  35
  36 #include <stdio.h>
  37
  38 #include <ac/stdlib.h>
  39
  40 #include <ac/errno.h>
  41 #include <ac/socket.h>
  42 #include <ac/string.h>
  43 #include <ac/time.h>
  44 #include <ac/unistd.h>
  45
  46 #include "ldap-int.h"
  47 #include "lber.h"
  48
  49 static LDAPConn *find_connection LDAP_P(( LDAP *ld, LDAPURLDesc *srv, int any ));
  50 static void use_connection LDAP_P(( LDAP *ld, LDAPConn *lc ));
  51
  52 static BerElement *
  53 re_encode_request( LDAP *ld,
  54         BerElement *origber,
  55         ber_int_t msgid,
  56         int sref,
  57         LDAPURLDesc *srv,
  58         int *type );
  59
  60 BerElement *
  61 ldap_alloc_ber_with_options( LDAP *ld )
  62 {
  63         BerElement      *ber;
  64
  65     if (( ber = ber_alloc_t( ld->ld_lberoptions )) == NULL ) {
  66                 ld->ld_errno = LDAP_NO_MEMORY;
  67         }
  68
  69         return( ber );
  70 }
  71
  72
  73 void
  74 ldap_set_ber_options( LDAP *ld, BerElement *ber )
  75 {
  76         ber->ber_options = ld->ld_lberoptions;
  77 }
  78
  79
  80 ber_int_t
  81 ldap_send_initial_request(
  82         LDAP *ld,
  83         ber_tag_t msgtype,
  84         const char *dn,
  85         BerElement *ber )
  86 {
  87         LDAPURLDesc     *servers;
  88         int rc;
  89
  90 #ifdef NEW_LOGGING
  91         LDAP_LOG ( OPERATION, ENTRY, "ldap_send_initial_request\n", 0, 0, 0 );
  92 #else
  93         Debug( LDAP_DEBUG_TRACE, "ldap_send_initial_request\n", 0, 0, 0 );
  94 #endif
  95
  96         if ( ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, NULL ) == -1 ) {
  97                 /* not connected yet */
  98                 int rc = ldap_open_defconn( ld );
  99
 100                 if( rc < 0 ) {
 101                         ber_free( ber, 1 );
 102                         return( -1 );
 103                 }
 104
 105 #ifdef NEW_LOGGING
 106                 LDAP_LOG ( OPERATION, DETAIL1,
 107                         "ldap_send_initial_request: ldap_open_defconn: successful\n" ,
 108                         0, 0, 0);
 109 #else
 110                 Debug( LDAP_DEBUG_TRACE,
 111                         "ldap_open_defconn: successful\n",
 112                         0, 0, 0 );
 113 #endif
 114         }
 115
 116         {
 117                 /*
 118                  * use of DNS is turned off or this is an X.500 DN...
 119                  * use our default connection
 120                  */
 121                 servers = NULL;
 122         }
 123
 124 #ifdef LDAP_CONNECTIONLESS
 125         if (LDAP_IS_UDP(ld)) {
 126                 if (msgtype == LDAP_REQ_BIND) {
 127                         if (ld->ld_options.ldo_cldapdn)
 128                                 ldap_memfree(ld->ld_options.ldo_cldapdn);
 129                         ld->ld_options.ldo_cldapdn = ldap_strdup(dn);
 130                         return 0;
 131                 }
 132                 if (msgtype != LDAP_REQ_ABANDON && msgtype != LDAP_REQ_SEARCH)
 133                         return LDAP_PARAM_ERROR;
 134         }
 135 #endif
 136         rc = ldap_send_server_request( ld, ber, ld->ld_msgid, NULL,
 137                                                                         servers, NULL, NULL );
 138         if (servers)
 139                 ldap_free_urllist(servers);
 140         return(rc);
 141 }
 142
 143
 144 int
 145 ldap_int_flush_request(
 146         LDAP *ld,
 147         LDAPRequest *lr
 148 )
 149 {
 150         LDAPConn *lc = lr->lr_conn;
 151
 152         if ( ber_flush( lc->lconn_sb, lr->lr_ber, 0 ) != 0 ) {
 153                 if ( errno == EAGAIN ) {
 154                         /* need to continue write later */
 155                         lr->lr_status = LDAP_REQST_WRITING;
 156                         ldap_mark_select_write( ld, lc->lconn_sb );
 157                         ld->ld_errno = LDAP_BUSY;
 158                         return -2;
 159                 } else {
 160                         ld->ld_errno = LDAP_SERVER_DOWN;
 161                         ldap_free_request( ld, lr );
 162                         ldap_free_connection( ld, lc, 0, 0 );
 163                         return( -1 );
 164                 }
 165         } else {
 166                 if ( lr->lr_parent == NULL ) {
 167                         lr->lr_ber->ber_end = lr->lr_ber->ber_ptr;
 168                         lr->lr_ber->ber_ptr = lr->lr_ber->ber_buf;
 169                 }
 170                 lr->lr_status = LDAP_REQST_INPROGRESS;
 171
 172                 /* sent -- waiting for a response */
 173                 ldap_mark_select_read( ld, lc->lconn_sb );
 174         }
 175         return 0;
 176 }
 177
 178 int
 179 ldap_send_server_request(
 180         LDAP *ld,
 181         BerElement *ber,
 182         ber_int_t msgid,
 183         LDAPRequest *parentreq,
 184         LDAPURLDesc *srvlist,
 185         LDAPConn *lc,
 186         LDAPreqinfo *bind )
 187 {
 188         LDAPRequest     *lr;
 189         int incparent, rc;
 190
 191 #ifdef NEW_LOGGING
 192         LDAP_LOG ( OPERATION, ENTRY, "ldap_send_server_request\n", 0, 0, 0 );
 193 #else
 194         Debug( LDAP_DEBUG_TRACE, "ldap_send_server_request\n", 0, 0, 0 );
 195 #endif
 196
 197         incparent = 0;
 198         ld->ld_errno = LDAP_SUCCESS;    /* optimistic */
 199
 200         if ( lc == NULL ) {
 201                 if ( srvlist == NULL ) {
 202                         lc = ld->ld_defconn;
 203                 } else {
 204                         if (( lc = find_connection( ld, srvlist, 1 )) ==
 205                             NULL ) {
 206                                 if ( (bind != NULL) && (parentreq != NULL) ) {
 207                                         /* Remember the bind in the parent */
 208                                         incparent = 1;
 209                                         ++parentreq->lr_outrefcnt;
 210                                 }
 211                                 lc = ldap_new_connection( ld, srvlist, 0, 1, bind );
 212                         }
 213                 }
 214         }
 215
 216         if ( lc == NULL || lc->lconn_status != LDAP_CONNST_CONNECTED ) {
 217                 ber_free( ber, 1 );
 218                 if ( ld->ld_errno == LDAP_SUCCESS ) {
 219                         ld->ld_errno = LDAP_SERVER_DOWN;
 220                 }
 221                 if ( incparent ) {
 222                         /* Forget about the bind */
 223                         --parentreq->lr_outrefcnt;
 224                 }
 225                 return( -1 );
 226         }
 227
 228         use_connection( ld, lc );
 229
 230         /* If we still have an incomplete write, try to finish it before
 231          * dealing with the new request. If we don't finish here, return
 232          * LDAP_BUSY and let the caller retry later. We only allow a single
 233          * request to be in WRITING state.
 234          */
 235         rc = 0;
 236 #ifdef LDAP_R_COMPILE
 237         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 238 #endif
 239         if ( ld->ld_requests &&
 240                 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
 241                 ldap_int_flush_request( ld, ld->ld_requests ) < 0 ) {
 242                 rc = -1;
 243         }
 244 #ifdef LDAP_R_COMPILE
 245         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 246 #endif
 247         if ( rc ) return rc;
 248
 249         if (( lr = (LDAPRequest *)LDAP_CALLOC( 1, sizeof( LDAPRequest ))) ==
 250             NULL ) {
 251                 ld->ld_errno = LDAP_NO_MEMORY;
 252                 ldap_free_connection( ld, lc, 0, 0 );
 253                 ber_free( ber, 1 );
 254                 if ( incparent ) {
 255                         /* Forget about the bind */
 256                         --parentreq->lr_outrefcnt;
 257                 }
 258                 return( -1 );
 259         }
 260         lr->lr_msgid = msgid;
 261         lr->lr_status = LDAP_REQST_INPROGRESS;
 262         lr->lr_res_errno = LDAP_SUCCESS;        /* optimistic */
 263         lr->lr_ber = ber;
 264         lr->lr_conn = lc;
 265         if ( parentreq != NULL ) {      /* sub-request */
 266                 if ( !incparent ) {
 267                         /* Increment if we didn't do it before the bind */
 268                         ++parentreq->lr_outrefcnt;
 269                 }
 270                 lr->lr_origid = parentreq->lr_origid;
 271                 lr->lr_parentcnt = parentreq->lr_parentcnt + 1;
 272                 lr->lr_parent = parentreq;
 273                 lr->lr_refnext = parentreq->lr_child;
 274                 parentreq->lr_child = lr;
 275         } else {                        /* original request */
 276                 lr->lr_origid = lr->lr_msgid;
 277         }
 278
 279 #ifdef LDAP_R_COMPILE
 280         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 281 #endif
 282         if (( lr->lr_next = ld->ld_requests ) != NULL ) {
 283                 lr->lr_next->lr_prev = lr;
 284         }
 285         ld->ld_requests = lr;
 286         lr->lr_prev = NULL;
 287
 288         ld->ld_errno = LDAP_SUCCESS;
 289         if ( ldap_int_flush_request( ld, lr ) == -1 ) {
 290                 msgid = -1;
 291         }
 292 #ifdef LDAP_R_COMPILE
 293         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 294 #endif
 295
 296         return( msgid );
 297 }
 298
 299 LDAPConn *
 300 ldap_new_connection( LDAP *ld, LDAPURLDesc *srvlist, int use_ldsb,
 301         int connect, LDAPreqinfo *bind )
 302 {
 303         LDAPConn        *lc;
 304         LDAPURLDesc     *srv;
 305         Sockbuf         *sb = NULL;
 306
 307 #ifdef NEW_LOGGING
 308         LDAP_LOG ( OPERATION, ENTRY, "ldap_new_connection\n", 0, 0, 0 );
 309 #else
 310         Debug( LDAP_DEBUG_TRACE, "ldap_new_connection\n", 0, 0, 0 );
 311 #endif
 312         /*
 313          * make a new LDAP server connection
 314          * XXX open connection synchronously for now
 315          */
 316         if (( lc = (LDAPConn *)LDAP_CALLOC( 1, sizeof( LDAPConn ))) == NULL ||
 317             ( !use_ldsb && ( (sb = ber_sockbuf_alloc()) == NULL ))) {
 318                 if ( lc != NULL ) {
 319                         LDAP_FREE( (char *)lc );
 320                 }
 321                 ld->ld_errno = LDAP_NO_MEMORY;
 322                 return( NULL );
 323         }
 324
 325         lc->lconn_sb = ( use_ldsb ) ? ld->ld_sb : sb;
 326
 327         if ( connect ) {
 328                 for ( srv = srvlist; srv != NULL; srv = srv->lud_next ) {
 329                         if ( ldap_int_open_connection( ld, lc, srv, 0 ) != -1 ) {
 330                                 break;
 331                         }
 332                 }
 333
 334                 if ( srv == NULL ) {
 335                         if ( !use_ldsb ) {
 336                                 ber_sockbuf_free( lc->lconn_sb );
 337                         }
 338                     LDAP_FREE( (char *)lc );
 339                     ld->ld_errno = LDAP_SERVER_DOWN;
 340                     return( NULL );
 341                 }
 342
 343                 lc->lconn_server = ldap_url_dup(srv);
 344         }
 345
 346         lc->lconn_status = LDAP_CONNST_CONNECTED;
 347         lc->lconn_next = ld->ld_conns;
 348         ld->ld_conns = lc;
 349
 350         /*
 351          * XXX for now, we always do a synchronous bind.  This will have
 352          * to change in the long run...
 353          */
 354         if ( bind != NULL) {
 355                 int             err = 0;
 356                 LDAPConn        *savedefconn;
 357
 358                 /* Set flag to prevent additional referrals from being processed on this
 359                  * connection until the bind has completed
 360                  */
 361                 lc->lconn_rebind_inprogress = 1;
 362                 /* V3 rebind function */
 363                 if ( ld->ld_rebind_proc != NULL) {
 364                         LDAPURLDesc     *srvfunc;
 365                         if( ( srvfunc = ldap_url_dup( srvlist)) == NULL) {
 366                                 ld->ld_errno = LDAP_NO_MEMORY;
 367                                 err = -1;
 368                         } else {
 369                                 savedefconn = ld->ld_defconn;
 370                                 ++lc->lconn_refcnt;     /* avoid premature free */
 371                                 ld->ld_defconn = lc;
 372
 373 #ifdef NEW_LOGGING
 374                                 LDAP_LOG ( OPERATION, DETAIL1,
 375                                         "ldap_new_connection: Call application rebind_proc\n",
 376                                         0, 0, 0 );
 377 #else
 378                                 Debug( LDAP_DEBUG_TRACE, "Call application rebind_proc\n", 0, 0, 0);
 379 #endif
 380                                 err = (*ld->ld_rebind_proc)( ld,
 381                                         bind->ri_url, bind->ri_request, bind->ri_msgid,
 382                                         ld->ld_rebind_params );
 383
 384                                 ld->ld_defconn = savedefconn;
 385                                 --lc->lconn_refcnt;
 386
 387                                 if( err != 0) {
 388                                 err = -1;
 389                                         ldap_free_connection( ld, lc, 1, 0 );
 390                                         lc = NULL;
 391                         }
 392                                 ldap_free_urldesc( srvfunc);
 393                 }
 394                 } else {
 395                         savedefconn = ld->ld_defconn;
 396                         ++lc->lconn_refcnt;     /* avoid premature free */
 397                         ld->ld_defconn = lc;
 398
 399 #ifdef NEW_LOGGING
 400                         LDAP_LOG ( OPERATION, DETAIL1,
 401                                 "ldap_new_connection: anonymous rebind via ldap_bind_s\n",
 402                                 0, 0, 0 );
 403 #else
 404                         Debug( LDAP_DEBUG_TRACE, "anonymous rebind via ldap_bind_s\n", 0, 0, 0);
 405 #endif
 406                         if ( ldap_bind_s( ld, "", "", LDAP_AUTH_SIMPLE ) != LDAP_SUCCESS ) {
 407                                 err = -1;
 408                         }
 409                         ld->ld_defconn = savedefconn;
 410                         --lc->lconn_refcnt;
 411
 412                 if ( err != 0 ) {
 413                         ldap_free_connection( ld, lc, 1, 0 );
 414                         lc = NULL;
 415                 }
 416         }
 417                 if( lc != NULL)
 418                         lc->lconn_rebind_inprogress = 0;
 419         }
 420
 421         return( lc );
 422 }
 423
 424
 425 static LDAPConn *
 426 find_connection( LDAP *ld, LDAPURLDesc *srv, int any )
 427 /*
 428  * return an existing connection (if any) to the server srv
 429  * if "any" is non-zero, check for any server in the "srv" chain
 430  */
 431 {
 432         LDAPConn        *lc;
 433         LDAPURLDesc     *ls;
 434
 435         for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
 436                 for ( ls = srv; ls != NULL; ls = ls->lud_next ) {
 437                         if ( lc->lconn_server->lud_host != NULL &&
 438                                 *lc->lconn_server->lud_host != '\0' &&
 439                             ls->lud_host != NULL && *ls->lud_host != '\0' &&
 440                                 strcasecmp( ls->lud_host, lc->lconn_server->lud_host ) == 0
 441                             && ls->lud_port == lc->lconn_server->lud_port ) {
 442                                 return lc;
 443                         }
 444                         if ( !any ) {
 445                                 break;
 446                         }
 447                 }
 448         }
 449
 450         return NULL;
 451 }
 452
 453
 454
 455 static void
 456 use_connection( LDAP *ld, LDAPConn *lc )
 457 {
 458         ++lc->lconn_refcnt;
 459         lc->lconn_lastused = time( NULL );
 460 }
 461
 462
 463 void
 464 ldap_free_connection( LDAP *ld, LDAPConn *lc, int force, int unbind )
 465 {
 466         LDAPConn        *tmplc, *prevlc;
 467
 468 #ifdef NEW_LOGGING
 469         LDAP_LOG ( OPERATION, ENTRY, "ldap_free_connection\n", 0, 0, 0 );
 470 #else
 471         Debug( LDAP_DEBUG_TRACE, "ldap_free_connection\n", 0, 0, 0 );
 472 #endif
 473
 474         if ( force || --lc->lconn_refcnt <= 0 ) {
 475                 if ( lc->lconn_status == LDAP_CONNST_CONNECTED ) {
 476                         ldap_mark_select_clear( ld, lc->lconn_sb );
 477                         if ( unbind ) {
 478                                 ldap_send_unbind( ld, lc->lconn_sb, NULL, NULL );
 479                         }
 480                 }
 481
 482                 if( lc->lconn_ber != NULL ) {
 483                         ber_free( lc->lconn_ber, 1 );
 484                 }
 485
 486                 ldap_int_sasl_close( ld, lc );
 487
 488                 prevlc = NULL;
 489                 for ( tmplc = ld->ld_conns; tmplc != NULL;
 490                     tmplc = tmplc->lconn_next ) {
 491                         if ( tmplc == lc ) {
 492                                 if ( prevlc == NULL ) {
 493                                     ld->ld_conns = tmplc->lconn_next;
 494                                 } else {
 495                                     prevlc->lconn_next = tmplc->lconn_next;
 496                                 }
 497                                 break;
 498                         }
 499                         prevlc = tmplc;
 500                 }
 501                 ldap_free_urllist( lc->lconn_server );
 502 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
 503                 if ( lc->lconn_krbinstance != NULL ) {
 504                         LDAP_FREE( lc->lconn_krbinstance );
 505                 }
 506 #endif
 507                 if ( lc->lconn_sb != ld->ld_sb ) {
 508                         ber_sockbuf_free( lc->lconn_sb );
 509                 }
 510                 if( lc->lconn_rebind_queue != NULL) {
 511                         int i;
 512                         for( i = 0; lc->lconn_rebind_queue[i] != NULL; i++) {
 513                                 LDAP_VFREE(lc->lconn_rebind_queue[i]);
 514                         }
 515                         LDAP_FREE( lc->lconn_rebind_queue);
 516                 }
 517                 LDAP_FREE( lc );
 518 #ifdef NEW_LOGGING
 519                 LDAP_LOG ( OPERATION, RESULTS,
 520                         "ldap_free_connection: actually freed\n", 0, 0, 0 );
 521 #else
 522                 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: actually freed\n",
 523                     0, 0, 0 );
 524 #endif
 525         } else {
 526                 lc->lconn_lastused = time( NULL );
 527 #ifdef NEW_LOGGING
 528                 LDAP_LOG ( OPERATION, RESULTS, "ldap_free_connection: refcnt %d\n",
 529                         lc->lconn_refcnt, 0, 0 );
 530 #else
 531                 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: refcnt %d\n",
 532                     lc->lconn_refcnt, 0, 0 );
 533 #endif
 534         }
 535 }
 536
 537
 538 #ifdef LDAP_DEBUG
 539 void
 540 ldap_dump_connection( LDAP *ld, LDAPConn *lconns, int all )
 541 {
 542         LDAPConn        *lc;
 543         char            timebuf[32];
 544
 545         fprintf( stderr, "** Connection%s:\n", all ? "s" : "" );
 546         for ( lc = lconns; lc != NULL; lc = lc->lconn_next ) {
 547                 if ( lc->lconn_server != NULL ) {
 548                         fprintf( stderr, "* host: %s  port: %d%s\n",
 549                             ( lc->lconn_server->lud_host == NULL ) ? "(null)"
 550                             : lc->lconn_server->lud_host,
 551                             lc->lconn_server->lud_port, ( lc->lconn_sb ==
 552                             ld->ld_sb ) ? "  (default)" : "" );
 553                 }
 554                 fprintf( stderr, "  refcnt: %d  status: %s\n", lc->lconn_refcnt,
 555                     ( lc->lconn_status == LDAP_CONNST_NEEDSOCKET ) ?
 556                     "NeedSocket" : ( lc->lconn_status ==
 557                     LDAP_CONNST_CONNECTING ) ? "Connecting" : "Connected" );
 558                 fprintf( stderr, "  last used: %s",
 559                     ldap_pvt_ctime( &lc->lconn_lastused, timebuf ));
 560                 if( lc->lconn_rebind_inprogress ) {
 561                         fprintf( stderr, "  rebind in progress\n");
 562                         if( lc->lconn_rebind_queue != NULL) {
 563                                 int i = 0;
 564                                 for( ;lc->lconn_rebind_queue[i] != NULL; i++) {
 565                                         int j = 0;
 566                                         for( ;lc->lconn_rebind_queue[i][j] != 0; j++) {
 567                                                 fprintf( stderr, "    queue %d entry %d - %s\n",
 568                                                         i, j, lc->lconn_rebind_queue[i][j]);
 569                                         }
 570                                 }
 571                         } else {
 572                                 fprintf( stderr, "    queue is empty\n");
 573                         }
 574                 }
 575                 fprintf(stderr, "\n");
 576                 if ( !all ) {
 577                         break;
 578                 }
 579         }
 580 }
 581
 582
 583 void
 584 ldap_dump_requests_and_responses( LDAP *ld )
 585 {
 586         LDAPRequest     *lr;
 587         LDAPMessage     *lm, *l;
 588
 589 #ifdef LDAP_R_COMPILE
 590         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 591 #endif
 592         fprintf( stderr, "** Outstanding Requests:\n" );
 593         if (( lr = ld->ld_requests ) == NULL ) {
 594                 fprintf( stderr, "   Empty\n" );
 595         }
 596         for ( ; lr != NULL; lr = lr->lr_next ) {
 597             fprintf( stderr, " * msgid %d,  origid %d, status %s\n",
 598                 lr->lr_msgid, lr->lr_origid,
 599                 ( lr->lr_status == LDAP_REQST_INPROGRESS ) ? "InProgress" :
 600                 ( lr->lr_status == LDAP_REQST_CHASINGREFS ) ? "ChasingRefs" :
 601                 ( lr->lr_status == LDAP_REQST_NOTCONNECTED ) ? "NotConnected" :
 602                 ( lr->lr_status == LDAP_REQST_WRITING) ? "Writing" :
 603                 ( lr->lr_status == LDAP_REQST_COMPLETED ? "Request Completed" : "Invalid Status"));
 604             fprintf( stderr, "   outstanding referrals %d, parent count %d\n",
 605                     lr->lr_outrefcnt, lr->lr_parentcnt );
 606         }
 607 #ifdef LDAP_R_COMPILE
 608         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 609         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
 610 #endif
 611         fprintf( stderr, "** Response Queue:\n" );
 612         if (( lm = ld->ld_responses ) == NULL ) {
 613                 fprintf( stderr, "   Empty\n" );
 614         }
 615         for ( ; lm != NULL; lm = lm->lm_next ) {
 616                 fprintf( stderr, " * msgid %d,  type %lu\n",
 617                     lm->lm_msgid, (unsigned long) lm->lm_msgtype );
 618                 if (( l = lm->lm_chain ) != NULL ) {
 619                         fprintf( stderr, "   chained responses:\n" );
 620                         for ( ; l != NULL; l = l->lm_chain ) {
 621                                 fprintf( stderr,
 622                                     "  * msgid %d,  type %lu\n",
 623                                     l->lm_msgid,
 624                                     (unsigned long) l->lm_msgtype );
 625                         }
 626                 }
 627         }
 628 #ifdef LDAP_R_COMPILE
 629         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
 630 #endif
 631 }
 632 #endif /* LDAP_DEBUG */
 633
 634 void
 635 ldap_free_request_int( LDAP *ld, LDAPRequest *lr )
 636 {
 637         if ( lr->lr_prev == NULL ) {
 638                 ld->ld_requests = lr->lr_next;
 639         } else {
 640                 lr->lr_prev->lr_next = lr->lr_next;
 641         }
 642
 643         if ( lr->lr_next != NULL ) {
 644                 lr->lr_next->lr_prev = lr->lr_prev;
 645         }
 646
 647         if ( lr->lr_ber != NULL ) {
 648                 ber_free( lr->lr_ber, 1 );
 649         }
 650
 651         if ( lr->lr_res_error != NULL ) {
 652                 LDAP_FREE( lr->lr_res_error );
 653         }
 654
 655         if ( lr->lr_res_matched != NULL ) {
 656                 LDAP_FREE( lr->lr_res_matched );
 657         }
 658
 659         LDAP_FREE( lr );
 660 }
 661
 662 void
 663 ldap_free_request( LDAP *ld, LDAPRequest *lr )
 664 {
 665         LDAPRequest     **ttmplr;
 666
 667 #ifdef NEW_LOGGING
 668         LDAP_LOG ( OPERATION, ARGS, "ldap_free_request (origid %d, msgid %d)\n",
 669                 lr->lr_origid, lr->lr_msgid, 0 );
 670 #else
 671         Debug( LDAP_DEBUG_TRACE, "ldap_free_request (origid %d, msgid %d)\n",
 672                 lr->lr_origid, lr->lr_msgid, 0 );
 673 #endif
 674
 675         /* free all referrals (child requests) */
 676         while ( lr->lr_child )
 677                 ldap_free_request( ld, lr->lr_child );
 678
 679         if ( lr->lr_parent != NULL ) {
 680                 --lr->lr_parent->lr_outrefcnt;
 681                 for ( ttmplr = &lr->lr_parent->lr_child; *ttmplr && *ttmplr != lr; ttmplr = &(*ttmplr)->lr_refnext );
 682                 if ( *ttmplr == lr )
 683                         *ttmplr = lr->lr_refnext;
 684         }
 685         ldap_free_request_int( ld, lr );
 686 }
 687
 688
 689 /*
 690  * Chase v3 referrals
 691  *
 692  * Parameters:
 693  *  (IN) ld = LDAP connection handle
 694  *  (IN) lr = LDAP Request structure
 695  *  (IN) refs = array of pointers to referral strings that we will chase
 696  *              The array will be free'd by this function when no longer needed
 697  *  (IN) sref != 0 if following search reference
 698  *  (OUT) errstrp = Place to return a string of referrals which could not be followed
 699  *  (OUT) hadrefp = 1 if sucessfully followed referral
 700  *
 701  * Return value - number of referrals followed
 702  */
 703 int
 704 ldap_chase_v3referrals( LDAP *ld, LDAPRequest *lr, char **refs, int sref, char **errstrp, int *hadrefp )
 705 {
 706         char            *unfollowed;
 707         int                      unfollowedcnt = 0;
 708         LDAPRequest     *origreq;
 709         LDAPURLDesc     *srv = NULL;
 710         BerElement      *ber;
 711         char            **refarray = NULL;
 712         LDAPConn        *lc;
 713         int                      rc, count, i, j;
 714         LDAPreqinfo  rinfo;
 715
 716         ld->ld_errno = LDAP_SUCCESS;    /* optimistic */
 717         *hadrefp = 0;
 718
 719 #ifdef NEW_LOGGING
 720         LDAP_LOG ( OPERATION, ENTRY, "ldap_chase_v3referrals\n", 0, 0, 0 );
 721 #else
 722         Debug( LDAP_DEBUG_TRACE, "ldap_chase_v3referrals\n", 0, 0, 0 );
 723 #endif
 724
 725         unfollowed = NULL;
 726         rc = count = 0;
 727
 728         /* If no referrals in array, return */
 729         if ( (refs == NULL) || ( (refs)[0] == NULL) ) {
 730                 rc = 0;
 731                 goto done;
 732         }
 733
 734         /* Check for hop limit exceeded */
 735         if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
 736 #ifdef NEW_LOGGING
 737                 LDAP_LOG ( OPERATION, DETAIL1,
 738                         "ldap_chase_v3referrals: more than %d referral hops (dropping)\n",
 739                         ld->ld_refhoplimit, 0, 0 );
 740 #else
 741                 Debug( LDAP_DEBUG_ANY,
 742                     "more than %d referral hops (dropping)\n", ld->ld_refhoplimit, 0, 0 );
 743 #endif
 744                 ld->ld_errno = LDAP_REFERRAL_LIMIT_EXCEEDED;
 745             rc = -1;
 746                 goto done;
 747         }
 748
 749         /* find original request */
 750         for ( origreq = lr;
 751                 origreq->lr_parent != NULL;
 752                 origreq = origreq->lr_parent )
 753         {
 754                 /* empty */ ;
 755         }
 756
 757         refarray = refs;
 758         refs = NULL;
 759         /* parse out & follow referrals */
 760         for( i=0; refarray[i] != NULL; i++) {
 761                 /* Parse the referral URL */
 762                 if (( rc = ldap_url_parse_ext( refarray[i], &srv)) != LDAP_SUCCESS) {
 763                         ld->ld_errno = rc;
 764                         rc = -1;
 765                         goto done;
 766                 }
 767
 768                 if( srv->lud_crit_exts ) {
 769                         /* we do not support any extensions */
 770                         ld->ld_errno = LDAP_NOT_SUPPORTED;
 771                         rc = -1;
 772                         goto done;
 773                 }
 774
 775                 /* treat ldap://hostpart and ldap://hostpart/ the same */
 776                 if ( srv->lud_dn && srv->lud_dn[0] == '\0' ) {
 777                         LDAP_FREE( srv->lud_dn );
 778                         srv->lud_dn = NULL;
 779                 }
 780
 781                 /* check connection for re-bind in progress */
 782                 if (( lc = find_connection( ld, srv, 1 )) != NULL ) {
 783                         if( lc->lconn_rebind_inprogress) {
 784                                 /* We are already chasing a referral or search reference and a
 785                                  * bind on that connection is in progress.  We must queue
 786                                  * referrals on that connection, so we don't get a request
 787                                  * going out before the bind operation completes. This happens
 788                                  * if two search references come in one behind the other
 789                                  * for the same server with different contexts.
 790                                  */
 791 #ifdef NEW_LOGGING
 792                                 LDAP_LOG ( OPERATION, DETAIL1,
 793                                         "ldap_chase_v3referrals: queue referral \"%s\"\n",
 794                                         refarray[i], 0, 0 );
 795 #else
 796                                 Debug( LDAP_DEBUG_TRACE,
 797                                         "ldap_chase_v3referrals: queue referral \"%s\"\n",
 798                                         refarray[i], 0, 0);
 799 #endif
 800                                 if( lc->lconn_rebind_queue == NULL ) {
 801                                         /* Create a referral list */
 802                                         lc->lconn_rebind_queue =
 803                                                 (char ***) LDAP_MALLOC( sizeof(void *) * 2);
 804
 805                                         if( lc->lconn_rebind_queue == NULL) {
 806                                                 ld->ld_errno = LDAP_NO_MEMORY;
 807                                                 rc = -1;
 808                                                 goto done;
 809                                         }
 810
 811                                         lc->lconn_rebind_queue[0] = refarray;
 812                                         lc->lconn_rebind_queue[1] = NULL;
 813                                         refarray = NULL;
 814
 815                                 } else {
 816                                         /* Count how many referral arrays we already have */
 817                                         for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++) {
 818                                                 /* empty */;
 819                                         }
 820
 821                                         /* Add the new referral to the list */
 822                                         lc->lconn_rebind_queue = (char ***) LDAP_REALLOC(
 823                                                 lc->lconn_rebind_queue, sizeof(void *) * (j + 2));
 824
 825                                         if( lc->lconn_rebind_queue == NULL ) {
 826                                                 ld->ld_errno = LDAP_NO_MEMORY;
 827                                                 rc = -1;
 828                                                 goto done;
 829                                         }
 830                                         lc->lconn_rebind_queue[j] = refarray;
 831                                         lc->lconn_rebind_queue[j+1] = NULL;
 832                                         refarray = NULL;
 833                                 }
 834
 835                                 /* We have queued the referral/reference, now just return */
 836                                 rc = 0;
 837                                 *hadrefp = 1;
 838                                 count = 1; /* Pretend we already followed referral */
 839                                 goto done;
 840                         }
 841                 }
 842                 /* Re-encode the request with the new starting point of the search.
 843                  * Note: In the future we also need to replace the filter if one
 844                  * was provided with the search reference
 845                  */
 846
 847                 /* For references we don't want old dn if new dn empty */
 848                 if ( sref && srv->lud_dn == NULL ) {
 849                         srv->lud_dn = LDAP_STRDUP( "" );
 850                 }
 851
 852                 ber = re_encode_request( ld, origreq->lr_ber, ++ld->ld_msgid,
 853                         sref, srv, &rinfo.ri_request );
 854
 855                 if( ber == NULL ) {
 856                         ld->ld_errno = LDAP_ENCODING_ERROR;
 857                         rc = -1;
 858                         goto done;
 859                 }
 860
 861 #ifdef NEW_LOGGING
 862                 LDAP_LOG ( OPERATION, DETAIL1,
 863                         "ldap_chase_v3referrals: msgid %d, url \"%s\"\n",
 864                         lr->lr_msgid, refarray[i], 0 );
 865 #else
 866                 Debug( LDAP_DEBUG_TRACE,
 867                         "ldap_chase_v3referral: msgid %d, url \"%s\"\n",
 868                         lr->lr_msgid, refarray[i], 0);
 869 #endif
 870
 871                 /* Send the new request to the server - may require a bind */
 872                 rinfo.ri_msgid = origreq->lr_origid;
 873                 rinfo.ri_url = refarray[i];
 874                 if ( (rc = ldap_send_server_request( ld, ber, ld->ld_msgid,
 875                         origreq, srv, NULL, &rinfo )) < 0 ) {
 876                         /* Failure, try next referral in the list */
 877 #ifdef NEW_LOGGING
 878                         LDAP_LOG ( OPERATION, ERR,
 879                         "ldap_chase_v3referrals: Unable to chase referral \"%s\" (%s)\n",
 880                         refarray[i], ldap_err2string( ld->ld_errno ), 0 );
 881 #else
 882                         Debug( LDAP_DEBUG_ANY, "Unable to chase referral \"%s\" (%s)\n",
 883                                 refarray[i], ldap_err2string( ld->ld_errno ), 0);
 884 #endif
 885                         unfollowedcnt += ldap_append_referral( ld, &unfollowed, refarray[i]);
 886                         ldap_free_urllist(srv);
 887                         srv = NULL;
 888                 } else {
 889                         /* Success, no need to try this referral list further */
 890                         rc = 0;
 891                         ++count;
 892                         *hadrefp = 1;
 893
 894                         /* check if there is a queue of referrals that came in during bind */
 895                         if( lc == NULL) {
 896                                 if (( lc = find_connection( ld, srv, 1 )) == NULL ) {
 897                                         ld->ld_errno = LDAP_OPERATIONS_ERROR;
 898                                         rc = -1;
 899                                         goto done;
 900                                 }
 901                         }
 902
 903                         if( lc->lconn_rebind_queue != NULL) {
 904                                 /* Release resources of previous list */
 905                                 LDAP_VFREE(refarray);
 906                                 refarray = NULL;
 907                                 ldap_free_urllist(srv);
 908                                 srv = NULL;
 909
 910                                 /* Pull entries off end of queue so list always null terminated */
 911                                 for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++) {
 912                                         ;
 913                                 }
 914                                 refarray = lc->lconn_rebind_queue[j-1];
 915                                 lc->lconn_rebind_queue[j-1] = NULL;
 916                                 /* we pulled off last entry from queue, free queue */
 917                                 if ( j == 1 ) {
 918                                         LDAP_FREE( lc->lconn_rebind_queue);
 919                                         lc->lconn_rebind_queue = NULL;
 920                                 }
 921                                 /* restart the loop the with new referral list */
 922                                 i = -1;
 923                                 continue;
 924                         }
 925                         break; /* referral followed, break out of for loop */
 926                 }
 927         } /* end for loop */
 928 done:
 929         LDAP_VFREE(refarray);
 930         ldap_free_urllist(srv);
 931         LDAP_FREE( *errstrp );
 932
 933         if( rc == 0) {
 934                 *errstrp = NULL;
 935                 LDAP_FREE( unfollowed );
 936                 return count;
 937         } else {
 938                 ld->ld_errno = LDAP_REFERRAL;
 939                 *errstrp = unfollowed;
 940                 return rc;
 941         }
 942 }
 943
 944 /*
 945  * XXX merging of errors in this routine needs to be improved
 946  */
 947 int
 948 ldap_chase_referrals( LDAP *ld,
 949         LDAPRequest *lr,
 950         char **errstrp,
 951         int sref,
 952         int *hadrefp )
 953 {
 954         int             rc, count;
 955         unsigned        len;
 956         char            *p, *ref, *unfollowed;
 957         LDAPRequest     *origreq;
 958         LDAPURLDesc     *srv;
 959         BerElement      *ber;
 960         LDAPreqinfo  rinfo;
 961
 962 #ifdef NEW_LOGGING
 963         LDAP_LOG ( OPERATION, ENTRY, "ldap_chase_referrals\n", 0, 0, 0 );
 964 #else
 965         Debug( LDAP_DEBUG_TRACE, "ldap_chase_referrals\n", 0, 0, 0 );
 966 #endif
 967
 968         ld->ld_errno = LDAP_SUCCESS;    /* optimistic */
 969         *hadrefp = 0;
 970
 971         if ( *errstrp == NULL ) {
 972                 return( 0 );
 973         }
 974
 975         len = strlen( *errstrp );
 976         for ( p = *errstrp; len >= LDAP_REF_STR_LEN; ++p, --len ) {
 977                 if ( strncasecmp( p, LDAP_REF_STR, LDAP_REF_STR_LEN ) == 0 ) {
 978                         *p = '\0';
 979                         p += LDAP_REF_STR_LEN;
 980                         break;
 981                 }
 982         }
 983
 984         if ( len < LDAP_REF_STR_LEN ) {
 985                 return( 0 );
 986         }
 987
 988         if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
 989 #ifdef NEW_LOGGING
 990                 LDAP_LOG ( OPERATION, ENTRY,
 991                         "ldap_chase_referrals: more than %d referral hops (dropping)\n",
 992                         ld->ld_refhoplimit, 0, 0 );
 993 #else
 994                 Debug( LDAP_DEBUG_ANY,
 995                     "more than %d referral hops (dropping)\n",
 996                     ld->ld_refhoplimit, 0, 0 );
 997 #endif
 998                     /* XXX report as error in ld->ld_errno? */
 999                     return( 0 );
1000         }
1001
1002         /* find original request */
1003         for ( origreq = lr; origreq->lr_parent != NULL;
1004              origreq = origreq->lr_parent ) {
1005                 /* empty */;
1006         }
1007
1008         unfollowed = NULL;
1009         rc = count = 0;
1010
1011         /* parse out & follow referrals */
1012         for ( ref = p; rc == 0 && ref != NULL; ref = p ) {
1013                 if (( p = strchr( ref, '\n' )) != NULL ) {
1014                         *p++ = '\0';
1015                 } else {
1016                         p = NULL;
1017                 }
1018
1019                 rc = ldap_url_parse_ext( ref, &srv );
1020
1021                 if ( rc != LDAP_URL_SUCCESS ) {
1022 #ifdef NEW_LOGGING
1023                         LDAP_LOG ( OPERATION, DETAIL1,
1024                                 "ldap_chase_referrals: ignoring unknown referral <%s>\n",
1025                                 ref, 0, 0 );
1026 #else
1027                         Debug( LDAP_DEBUG_TRACE,
1028                             "ignoring unknown referral <%s>\n", ref, 0, 0 );
1029 #endif
1030                         rc = ldap_append_referral( ld, &unfollowed, ref );
1031                         *hadrefp = 1;
1032                         continue;
1033                 }
1034
1035                 if( srv->lud_dn != NULL && srv->lud_dn == '\0' ) {
1036                         LDAP_FREE( srv->lud_dn );
1037                         srv->lud_dn = NULL;
1038                 }
1039
1040 #ifdef NEW_LOGGING
1041                 LDAP_LOG ( OPERATION, DETAIL1,
1042                         "ldap_chase_referrals: chasing LDAP referral <%s>\n", ref, 0, 0 );
1043 #else
1044                 Debug( LDAP_DEBUG_TRACE,
1045                     "chasing LDAP referral: <%s>\n", ref, 0, 0 );
1046 #endif
1047
1048                 *hadrefp = 1;
1049
1050                 ber = re_encode_request( ld, origreq->lr_ber,
1051                     ++ld->ld_msgid, sref, srv, &rinfo.ri_request );
1052
1053                 if( ber == NULL ) {
1054                         return -1 ;
1055                 }
1056
1057                 /* copy the complete referral for rebind process */
1058                 rinfo.ri_url = LDAP_STRDUP( ref );
1059
1060                 rinfo.ri_msgid = origreq->lr_origid;
1061
1062                 rc = ldap_send_server_request( ld, ber, ld->ld_msgid,
1063                     lr, srv, NULL, &rinfo );
1064
1065                 LDAP_FREE( rinfo.ri_url );
1066
1067                 if( rc >= 0 ) {
1068                         ++count;
1069                 } else {
1070 #ifdef NEW_LOGGING
1071                         LDAP_LOG ( OPERATION, ERR,
1072                                 "ldap_chase_referrals: Unable to chase referral <%s>\n",
1073                                 ldap_err2string( ld->ld_errno), 0, 0 );
1074 #else
1075                         Debug( LDAP_DEBUG_ANY,
1076                             "Unable to chase referral (%s)\n",
1077                             ldap_err2string( ld->ld_errno ), 0, 0 );
1078 #endif
1079                         rc = ldap_append_referral( ld, &unfollowed, ref );
1080                 }
1081
1082                 ldap_free_urllist(srv);
1083         }
1084
1085         LDAP_FREE( *errstrp );
1086         *errstrp = unfollowed;
1087
1088         return(( rc == 0 ) ? count : rc );
1089 }
1090
1091
1092 int
1093 ldap_append_referral( LDAP *ld, char **referralsp, char *s )
1094 {
1095         int     first;
1096
1097         if ( *referralsp == NULL ) {
1098                 first = 1;
1099                 *referralsp = (char *)LDAP_MALLOC( strlen( s ) + LDAP_REF_STR_LEN
1100                     + 1 );
1101         } else {
1102                 first = 0;
1103                 *referralsp = (char *)LDAP_REALLOC( *referralsp,
1104                     strlen( *referralsp ) + strlen( s ) + 2 );
1105         }
1106
1107         if ( *referralsp == NULL ) {
1108                 ld->ld_errno = LDAP_NO_MEMORY;
1109                 return( -1 );
1110         }
1111
1112         if ( first ) {
1113                 strcpy( *referralsp, LDAP_REF_STR );
1114         } else {
1115                 strcat( *referralsp, "\n" );
1116         }
1117         strcat( *referralsp, s );
1118
1119         return( 0 );
1120 }
1121
1122
1123
1124 static BerElement *
1125 re_encode_request( LDAP *ld,
1126         BerElement *origber,
1127         ber_int_t msgid,
1128         int sref,
1129         LDAPURLDesc *srv,
1130         int *type )
1131 {
1132         /*
1133          * XXX this routine knows way too much about how the lber library works!
1134          */
1135         ber_int_t       along;
1136         ber_tag_t       tag;
1137         ber_tag_t       rtag;
1138         ber_int_t       ver;
1139         ber_int_t       scope;
1140         int             rc;
1141         BerElement      tmpber, *ber;
1142         char            *orig_dn;
1143         char            *dn;
1144
1145 #ifdef NEW_LOGGING
1146         LDAP_LOG ( OPERATION, ARGS,
1147                 "re_encode_request: new msgid %ld, new dn <%s>\n",
1148                 (long) msgid,
1149                 ( srv == NULL || srv->lud_dn == NULL ) ? "NONE" : srv->lud_dn, 0 );
1150 #else
1151         Debug( LDAP_DEBUG_TRACE,
1152             "re_encode_request: new msgid %ld, new dn <%s>\n",
1153             (long) msgid,
1154                 ( srv == NULL || srv->lud_dn == NULL) ? "NONE" : srv->lud_dn, 0 );
1155 #endif
1156
1157         tmpber = *origber;
1158
1159         /*
1160          * all LDAP requests are sequences that start with a message id.
1161          * For all except delete, this is followed by a sequence that is
1162          * tagged with the operation code.  For delete, the provided DN
1163          * is not wrapped by a sequence.
1164          */
1165         rtag = ber_scanf( &tmpber, "{it", /*}*/ &along, &tag );
1166
1167         if ( rtag == LBER_ERROR ) {
1168                 ld->ld_errno = LDAP_DECODING_ERROR;
1169                 return( NULL );
1170         }
1171
1172         assert( tag != 0);
1173         if ( tag == LDAP_REQ_BIND ) {
1174                 /* bind requests have a version number before the DN & other stuff */
1175                 rtag = ber_scanf( &tmpber, "{ia" /*}*/, &ver, &orig_dn );
1176
1177         } else if ( tag == LDAP_REQ_DELETE ) {
1178                 /* delete requests don't have a DN wrapping sequence */
1179                 rtag = ber_scanf( &tmpber, "a", &orig_dn );
1180
1181         } else if ( tag == LDAP_REQ_SEARCH ) {
1182                 /* search requests need to be re-scope-ed */
1183                 rtag = ber_scanf( &tmpber, "{ae" /*"}"*/, &orig_dn, &scope );
1184
1185                 if( srv->lud_scope != LDAP_SCOPE_DEFAULT ) {
1186                         /* use the scope provided in reference */
1187                         scope = srv->lud_scope;
1188
1189                 } else if ( sref && scope != LDAP_SCOPE_SUBTREE ) {
1190                         /* use scope implied by previous operation */
1191                         /*   base -> base */
1192                         /*   one -> base */
1193                         /*   subtree -> subtree */
1194                         scope = LDAP_SCOPE_BASE;
1195                 }
1196
1197         } else {
1198                 rtag = ber_scanf( &tmpber, "{a" /*}*/, &orig_dn );
1199         }
1200
1201         if( rtag == LBER_ERROR ) {
1202                 ld->ld_errno = LDAP_DECODING_ERROR;
1203                 return NULL;
1204         }
1205
1206         if (( ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
1207                 return NULL;
1208         }
1209
1210         if ( srv->lud_dn == NULL ) {
1211                 dn = orig_dn;
1212         } else {
1213                 dn = srv->lud_dn;
1214         }
1215
1216         if ( tag == LDAP_REQ_BIND ) {
1217                 rc = ber_printf( ber, "{it{is" /*}}*/, msgid, tag, ver, dn );
1218         } else if ( tag == LDAP_REQ_DELETE ) {
1219                 rc = ber_printf( ber, "{itsN}", msgid, tag, dn );
1220         } else if ( tag == LDAP_REQ_SEARCH ) {
1221                 rc = ber_printf( ber, "{it{se" /*}}*/, msgid, tag, dn, scope );
1222         } else {
1223                 rc = ber_printf( ber, "{it{s" /*}}*/, msgid, tag, dn );
1224         }
1225
1226         LDAP_FREE( orig_dn );
1227
1228         if ( rc == -1 ) {
1229                 ld->ld_errno = LDAP_ENCODING_ERROR;
1230                 ber_free( ber, 1 );
1231                 return NULL;
1232         }
1233
1234         if ( tag != LDAP_REQ_DELETE && (
1235                 ber_write(ber, tmpber.ber_ptr, ( tmpber.ber_end - tmpber.ber_ptr ), 0)
1236                 != ( tmpber.ber_end - tmpber.ber_ptr ) ||
1237             ber_printf( ber, /*{{*/ "N}N}" ) == -1 ) )
1238         {
1239                 ld->ld_errno = LDAP_ENCODING_ERROR;
1240                 ber_free( ber, 1 );
1241                 return NULL;
1242         }
1243
1244 #ifdef LDAP_DEBUG
1245         if ( ldap_debug & LDAP_DEBUG_PACKETS ) {
1246 #ifdef NEW_LOGGING
1247                 LDAP_LOG ( OPERATION, DETAIL1,
1248                         "re_encode_request: new request is:\n", 0, 0, 0 );
1249 #else
1250                 Debug( LDAP_DEBUG_ANY, "re_encode_request new request is:\n",
1251                     0, 0, 0 );
1252 #endif
1253                 ber_log_dump( LDAP_DEBUG_BER, ldap_debug, ber, 0 );
1254         }
1255 #endif /* LDAP_DEBUG */
1256
1257         *type = tag;    /* return request type */
1258         return ber;
1259 }
1260
1261
1262 LDAPRequest *
1263 ldap_find_request_by_msgid( LDAP *ld, ber_int_t msgid )
1264 {
1265         LDAPRequest     *lr;
1266
1267 #ifdef LDAP_R_COMPILE
1268         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
1269 #endif
1270         for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
1271                 if( lr->lr_status == LDAP_REQST_COMPLETED ) {
1272                         continue;       /* Skip completed requests */
1273                 }
1274                 if ( msgid == lr->lr_msgid ) {
1275                         break;
1276                 }
1277         }
1278 #ifdef LDAP_R_COMPILE
1279         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
1280 #endif
1281
1282         return( lr );
1283 }
1284
1285