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

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2006 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15
  16 #include "portable.h"
  17
  18 #include <stdio.h>
  19
  20 #include <ac/socket.h>
  21 #include <ac/stdlib.h>
  22 #include <ac/string.h>
  23 #include <ac/time.h>
  24 #include <ac/errno.h>
  25 #include <ac/ctype.h>
  26 #include <ac/unistd.h>
  27
  28 #ifdef HAVE_LIMITS_H
  29 #include <limits.h>
  30 #endif
  31
  32 #include "ldap-int.h"
  33
  34 #ifdef HAVE_CYRUS_SASL
  35
  36 #ifdef HAVE_LIMITS_H
  37 #include <limits.h>
  38 #endif
  39
  40 #ifndef INT_MAX
  41 #define INT_MAX 2147483647      /* 32 bit signed max */
  42 #endif
  43
  44 #ifdef LDAP_R_COMPILE
  45 ldap_pvt_thread_mutex_t ldap_int_sasl_mutex;
  46 #endif
  47
  48 #ifdef HAVE_SASL_SASL_H
  49 #include <sasl/sasl.h>
  50 #else
  51 #include <sasl.h>
  52 #endif
  53
  54 #if SASL_VERSION_MAJOR >= 2
  55 #define SASL_CONST const
  56 #else
  57 #define SASL_CONST
  58 #endif
  59
  60 /*
  61 * Various Cyrus SASL related stuff.
  62 */
  63
  64 static const sasl_callback_t client_callbacks[] = {
  65 #ifdef SASL_CB_GETREALM
  66         { SASL_CB_GETREALM, NULL, NULL },
  67 #endif
  68         { SASL_CB_USER, NULL, NULL },
  69         { SASL_CB_AUTHNAME, NULL, NULL },
  70         { SASL_CB_PASS, NULL, NULL },
  71         { SASL_CB_ECHOPROMPT, NULL, NULL },
  72         { SASL_CB_NOECHOPROMPT, NULL, NULL },
  73         { SASL_CB_LIST_END, NULL, NULL }
  74 };
  75
  76 int ldap_int_sasl_init( void )
  77 {
  78         /* XXX not threadsafe */
  79         static int sasl_initialized = 0;
  80
  81 #ifdef HAVE_SASL_VERSION
  82         /* stringify the version number, sasl.h doesn't do it for us */
  83 #define VSTR0(maj, min, pat)    #maj "." #min "." #pat
  84 #define VSTR(maj, min, pat)     VSTR0(maj, min, pat)
  85 #define SASL_VERSION_STRING     VSTR(SASL_VERSION_MAJOR, SASL_VERSION_MINOR, \
  86                                 SASL_VERSION_STEP)
  87         { int rc;
  88         sasl_version( NULL, &rc );
  89         if ( ((rc >> 16) != ((SASL_VERSION_MAJOR << 8)|SASL_VERSION_MINOR)) ||
  90                 (rc & 0xffff) < SASL_VERSION_STEP) {
  91                 char version[sizeof("xxx.xxx.xxxxx")];
  92                 sprintf( version, "%u.%d.%d", (unsigned)rc >> 24, (rc >> 16) & 0xff,
  93                         rc & 0xffff );
  94
  95                 Debug( LDAP_DEBUG_ANY,
  96                 "ldap_int_sasl_init: SASL library version mismatch:"
  97                 " expected " SASL_VERSION_STRING ","
  98                 " got %s\n", version, 0, 0 );
  99                 return -1;
 100         }
 101         }
 102 #endif
 103         if ( sasl_initialized ) {
 104                 return 0;
 105         }
 106
 107 /* SASL 2 takes care of its own memory completely internally */
 108 #if SASL_VERSION_MAJOR < 2 && !defined(CSRIMALLOC)
 109         sasl_set_alloc(
 110                 ber_memalloc,
 111                 ber_memcalloc,
 112                 ber_memrealloc,
 113                 ber_memfree );
 114 #endif /* CSRIMALLOC */
 115
 116 #ifdef LDAP_R_COMPILE
 117         sasl_set_mutex(
 118                 ldap_pvt_sasl_mutex_new,
 119                 ldap_pvt_sasl_mutex_lock,
 120                 ldap_pvt_sasl_mutex_unlock,
 121                 ldap_pvt_sasl_mutex_dispose );
 122 #endif
 123
 124         if ( sasl_client_init( NULL ) == SASL_OK ) {
 125                 sasl_initialized = 1;
 126                 return 0;
 127         }
 128
 129 #if SASL_VERSION_MAJOR < 2
 130         /* A no-op to make sure we link with Cyrus 1.5 */
 131         sasl_client_auth( NULL, NULL, NULL, 0, NULL, NULL );
 132 #endif
 133         return -1;
 134 }
 135
 136 /*
 137  * SASL encryption support for LBER Sockbufs
 138  */
 139
 140 struct sb_sasl_data {
 141         sasl_conn_t             *sasl_context;
 142         unsigned                *sasl_maxbuf;
 143         Sockbuf_Buf             sec_buf_in;
 144         Sockbuf_Buf             buf_in;
 145         Sockbuf_Buf             buf_out;
 146 };
 147
 148 static int
 149 sb_sasl_setup( Sockbuf_IO_Desc *sbiod, void *arg )
 150 {
 151         struct sb_sasl_data     *p;
 152
 153         assert( sbiod != NULL );
 154
 155         p = LBER_MALLOC( sizeof( *p ) );
 156         if ( p == NULL )
 157                 return -1;
 158         p->sasl_context = (sasl_conn_t *)arg;
 159         ber_pvt_sb_buf_init( &p->sec_buf_in );
 160         ber_pvt_sb_buf_init( &p->buf_in );
 161         ber_pvt_sb_buf_init( &p->buf_out );
 162         if ( ber_pvt_sb_grow_buffer( &p->sec_buf_in, SASL_MIN_BUFF_SIZE ) < 0 ) {
 163                 LBER_FREE( p );
 164                 errno = ENOMEM;
 165                 return -1;
 166         }
 167         sasl_getprop( p->sasl_context, SASL_MAXOUTBUF,
 168                 (SASL_CONST void **) &p->sasl_maxbuf );
 169
 170         sbiod->sbiod_pvt = p;
 171
 172         return 0;
 173 }
 174
 175 static int
 176 sb_sasl_remove( Sockbuf_IO_Desc *sbiod )
 177 {
 178         struct sb_sasl_data     *p;
 179
 180         assert( sbiod != NULL );
 181
 182         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 183 #if SASL_VERSION_MAJOR >= 2
 184         /*
 185          * SASLv2 encode/decode buffers are managed by
 186          * libsasl2. Ensure they are not freed by liblber.
 187          */
 188         p->buf_in.buf_base = NULL;
 189         p->buf_out.buf_base = NULL;
 190 #endif
 191         ber_pvt_sb_buf_destroy( &p->sec_buf_in );
 192         ber_pvt_sb_buf_destroy( &p->buf_in );
 193         ber_pvt_sb_buf_destroy( &p->buf_out );
 194         LBER_FREE( p );
 195         sbiod->sbiod_pvt = NULL;
 196         return 0;
 197 }
 198
 199 static ber_len_t
 200 sb_sasl_pkt_length( const unsigned char *buf, int debuglevel )
 201 {
 202         ber_len_t               size;
 203
 204         assert( buf != NULL );
 205
 206         size = buf[0] << 24
 207                 | buf[1] << 16
 208                 | buf[2] << 8
 209                 | buf[3];
 210
 211         if ( size > SASL_MAX_BUFF_SIZE ) {
 212                 /* somebody is trying to mess me up. */
 213                 ber_log_printf( LDAP_DEBUG_ANY, debuglevel,
 214                         "sb_sasl_pkt_length: received illegal packet length "
 215                         "of %lu bytes\n", (unsigned long)size );
 216                 size = 16; /* this should lead to an error. */
 217         }
 218
 219         return size + 4; /* include the size !!! */
 220 }
 221
 222 /* Drop a processed packet from the input buffer */
 223 static void
 224 sb_sasl_drop_packet ( Sockbuf_Buf *sec_buf_in, int debuglevel )
 225 {
 226         ber_slen_t                      len;
 227
 228         len = sec_buf_in->buf_ptr - sec_buf_in->buf_end;
 229         if ( len > 0 )
 230                 AC_MEMCPY( sec_buf_in->buf_base, sec_buf_in->buf_base +
 231                         sec_buf_in->buf_end, len );
 232
 233         if ( len >= 4 ) {
 234                 sec_buf_in->buf_end = sb_sasl_pkt_length(
 235                         (unsigned char *) sec_buf_in->buf_base, debuglevel);
 236         }
 237         else {
 238                 sec_buf_in->buf_end = 0;
 239         }
 240         sec_buf_in->buf_ptr = len;
 241 }
 242
 243 static ber_slen_t
 244 sb_sasl_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
 245 {
 246         struct sb_sasl_data     *p;
 247         ber_slen_t              ret, bufptr;
 248
 249         assert( sbiod != NULL );
 250         assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
 251
 252         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 253
 254         /* Are there anything left in the buffer? */
 255         ret = ber_pvt_sb_copy_out( &p->buf_in, buf, len );
 256         bufptr = ret;
 257         len -= ret;
 258
 259         if ( len == 0 )
 260                 return bufptr;
 261
 262 #if SASL_VERSION_MAJOR >= 2
 263         ber_pvt_sb_buf_init( &p->buf_in );
 264 #else
 265         ber_pvt_sb_buf_destroy( &p->buf_in );
 266 #endif
 267
 268         /* Read the length of the packet */
 269         while ( p->sec_buf_in.buf_ptr < 4 ) {
 270                 ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base +
 271                         p->sec_buf_in.buf_ptr,
 272                         4 - p->sec_buf_in.buf_ptr );
 273 #ifdef EINTR
 274                 if ( ( ret < 0 ) && ( errno == EINTR ) )
 275                         continue;
 276 #endif
 277                 if ( ret <= 0 )
 278                         return bufptr ? bufptr : ret;
 279
 280                 p->sec_buf_in.buf_ptr += ret;
 281         }
 282
 283         /* The new packet always starts at p->sec_buf_in.buf_base */
 284         ret = sb_sasl_pkt_length( (unsigned char *) p->sec_buf_in.buf_base,
 285                 sbiod->sbiod_sb->sb_debug );
 286
 287         /* Grow the packet buffer if neccessary */
 288         if ( ( p->sec_buf_in.buf_size < (ber_len_t) ret ) &&
 289                 ber_pvt_sb_grow_buffer( &p->sec_buf_in, ret ) < 0 )
 290         {
 291                 errno = ENOMEM;
 292                 return -1;
 293         }
 294         p->sec_buf_in.buf_end = ret;
 295
 296         /* Did we read the whole encrypted packet? */
 297         while ( p->sec_buf_in.buf_ptr < p->sec_buf_in.buf_end ) {
 298                 /* No, we have got only a part of it */
 299                 ret = p->sec_buf_in.buf_end - p->sec_buf_in.buf_ptr;
 300
 301                 ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base +
 302                         p->sec_buf_in.buf_ptr, ret );
 303 #ifdef EINTR
 304                 if ( ( ret < 0 ) && ( errno == EINTR ) )
 305                         continue;
 306 #endif
 307                 if ( ret <= 0 )
 308                         return bufptr ? bufptr : ret;
 309
 310                 p->sec_buf_in.buf_ptr += ret;
 311         }
 312
 313         /* Decode the packet */
 314         {
 315                 unsigned tmpsize = p->buf_in.buf_end;
 316                 ret = sasl_decode( p->sasl_context, p->sec_buf_in.buf_base,
 317                         p->sec_buf_in.buf_end,
 318                         (SASL_CONST char **)&p->buf_in.buf_base,
 319                         (unsigned *)&tmpsize );
 320                 p->buf_in.buf_end = tmpsize;
 321         }
 322
 323         /* Drop the packet from the input buffer */
 324         sb_sasl_drop_packet( &p->sec_buf_in, sbiod->sbiod_sb->sb_debug );
 325
 326         if ( ret != SASL_OK ) {
 327                 ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
 328                         "sb_sasl_read: failed to decode packet: %s\n",
 329                         sasl_errstring( ret, NULL, NULL ) );
 330                 errno = EIO;
 331                 return -1;
 332         }
 333
 334         p->buf_in.buf_size = p->buf_in.buf_end;
 335
 336         bufptr += ber_pvt_sb_copy_out( &p->buf_in, (char*) buf + bufptr, len );
 337
 338         return bufptr;
 339 }
 340
 341 static ber_slen_t
 342 sb_sasl_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
 343 {
 344         struct sb_sasl_data     *p;
 345         int                     ret;
 346
 347         assert( sbiod != NULL );
 348         assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
 349
 350         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 351
 352         /* Are there anything left in the buffer? */
 353         if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) {
 354                 ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
 355                 if ( ret < 0 ) return ret;
 356
 357                 /* Still have something left?? */
 358                 if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) {
 359                         errno = EAGAIN;
 360                         return -1;
 361                 }
 362         }
 363
 364         /* now encode the next packet. */
 365 #if SASL_VERSION_MAJOR >= 2
 366         ber_pvt_sb_buf_init( &p->buf_out );
 367 #else
 368         ber_pvt_sb_buf_destroy( &p->buf_out );
 369 #endif
 370         if ( len > *p->sasl_maxbuf - 100 ) {
 371                 len = *p->sasl_maxbuf - 100;    /* For safety margin */
 372         }
 373
 374         {
 375                 unsigned tmpsize = p->buf_out.buf_size;
 376                 ret = sasl_encode( p->sasl_context, buf, len,
 377                         (SASL_CONST char **)&p->buf_out.buf_base,
 378                         &tmpsize );
 379                 p->buf_out.buf_size = tmpsize;
 380         }
 381
 382         if ( ret != SASL_OK ) {
 383                 ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
 384                         "sb_sasl_write: failed to encode packet: %s\n",
 385                         sasl_errstring( ret, NULL, NULL ) );
 386                 errno = EIO;
 387                 return -1;
 388         }
 389         p->buf_out.buf_end = p->buf_out.buf_size;
 390
 391         ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
 392
 393         /* return number of bytes encoded, not written, to ensure
 394          * no byte is encoded twice (even if only sent once).
 395          */
 396         return len;
 397 }
 398
 399 static int
 400 sb_sasl_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
 401 {
 402         struct sb_sasl_data     *p;
 403
 404         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 405
 406         if ( opt == LBER_SB_OPT_DATA_READY ) {
 407                 if ( p->buf_in.buf_ptr != p->buf_in.buf_end ) return 1;
 408         }
 409
 410         return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
 411 }
 412
 413 Sockbuf_IO ldap_pvt_sockbuf_io_sasl = {
 414         sb_sasl_setup,          /* sbi_setup */
 415         sb_sasl_remove,         /* sbi_remove */
 416         sb_sasl_ctrl,           /* sbi_ctrl */
 417         sb_sasl_read,           /* sbi_read */
 418         sb_sasl_write,          /* sbi_write */
 419         NULL                    /* sbi_close */
 420 };
 421
 422 int ldap_pvt_sasl_install( Sockbuf *sb, void *ctx_arg )
 423 {
 424         Debug( LDAP_DEBUG_TRACE, "ldap_pvt_sasl_install\n",
 425                 0, 0, 0 );
 426
 427         /* don't install the stuff unless security has been negotiated */
 428
 429         if ( !ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO,
 430                         &ldap_pvt_sockbuf_io_sasl ) )
 431         {
 432 #ifdef LDAP_DEBUG
 433                 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
 434                         LBER_SBIOD_LEVEL_APPLICATION, (void *)"sasl_" );
 435 #endif
 436                 ber_sockbuf_add_io( sb, &ldap_pvt_sockbuf_io_sasl,
 437                         LBER_SBIOD_LEVEL_APPLICATION, ctx_arg );
 438         }
 439
 440         return LDAP_SUCCESS;
 441 }
 442
 443 void ldap_pvt_sasl_remove( Sockbuf *sb )
 444 {
 445         ber_sockbuf_remove_io( sb, &ldap_pvt_sockbuf_io_sasl,
 446                 LBER_SBIOD_LEVEL_APPLICATION );
 447 #ifdef LDAP_DEBUG
 448         ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug,
 449                 LBER_SBIOD_LEVEL_APPLICATION );
 450 #endif
 451 }
 452
 453 static int
 454 sasl_err2ldap( int saslerr )
 455 {
 456         int rc;
 457
 458         /* map SASL errors to LDAP API errors returned by:
 459          *      sasl_client_new()
 460          *              SASL_OK, SASL_NOMECH, SASL_NOMEM
 461          *      sasl_client_start()
 462          *              SASL_OK, SASL_NOMECH, SASL_NOMEM, SASL_INTERACT
 463          *      sasl_client_step()
 464          *              SASL_OK, SASL_INTERACT, SASL_BADPROT, SASL_BADSERV
 465          */
 466
 467         switch (saslerr) {
 468                 case SASL_CONTINUE:
 469                         rc = LDAP_MORE_RESULTS_TO_RETURN;
 470                         break;
 471                 case SASL_INTERACT:
 472                         rc = LDAP_LOCAL_ERROR;
 473                         break;
 474                 case SASL_OK:
 475                         rc = LDAP_SUCCESS;
 476                         break;
 477                 case SASL_NOMEM:
 478                         rc = LDAP_NO_MEMORY;
 479                         break;
 480                 case SASL_NOMECH:
 481                         rc = LDAP_AUTH_UNKNOWN;
 482                         break;
 483                 case SASL_BADPROT:
 484                         rc = LDAP_DECODING_ERROR;
 485                         break;
 486                 case SASL_BADSERV:
 487                         rc = LDAP_AUTH_UNKNOWN;
 488                         break;
 489
 490                 /* other codes */
 491                 case SASL_BADAUTH:
 492                         rc = LDAP_AUTH_UNKNOWN;
 493                         break;
 494                 case SASL_NOAUTHZ:
 495                         rc = LDAP_PARAM_ERROR;
 496                         break;
 497                 case SASL_FAIL:
 498                         rc = LDAP_LOCAL_ERROR;
 499                         break;
 500                 case SASL_TOOWEAK:
 501                 case SASL_ENCRYPT:
 502                         rc = LDAP_AUTH_UNKNOWN;
 503                         break;
 504                 default:
 505                         rc = LDAP_LOCAL_ERROR;
 506                         break;
 507         }
 508
 509         assert( rc == LDAP_SUCCESS || LDAP_API_ERROR( rc ) );
 510         return rc;
 511 }
 512
 513 int
 514 ldap_int_sasl_open(
 515         LDAP *ld,
 516         LDAPConn *lc,
 517         const char * host )
 518 {
 519         int rc;
 520         sasl_conn_t *ctx;
 521
 522         assert( lc->lconn_sasl_authctx == NULL );
 523
 524         if ( host == NULL ) {
 525                 ld->ld_errno = LDAP_LOCAL_ERROR;
 526                 return ld->ld_errno;
 527         }
 528
 529         if ( ldap_int_sasl_init() ) {
 530                 ld->ld_errno = LDAP_LOCAL_ERROR;
 531                 return ld->ld_errno;
 532         }
 533
 534 #if SASL_VERSION_MAJOR >= 2
 535         rc = sasl_client_new( "ldap", host, NULL, NULL,
 536                 client_callbacks, 0, &ctx );
 537 #else
 538         rc = sasl_client_new( "ldap", host, client_callbacks,
 539                 SASL_SECURITY_LAYER, &ctx );
 540 #endif
 541
 542         if ( rc != SASL_OK ) {
 543                 ld->ld_errno = sasl_err2ldap( rc );
 544                 return ld->ld_errno;
 545         }
 546
 547         Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: host=%s\n",
 548                 host, 0, 0 );
 549
 550         lc->lconn_sasl_authctx = ctx;
 551
 552         return LDAP_SUCCESS;
 553 }
 554
 555 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
 556 {
 557         sasl_conn_t *ctx = lc->lconn_sasl_authctx;
 558
 559         if( ctx != NULL ) {
 560                 sasl_dispose( &ctx );
 561                 if ( lc->lconn_sasl_sockctx &&
 562                         lc->lconn_sasl_authctx != lc->lconn_sasl_sockctx ) {
 563                         ctx = lc->lconn_sasl_sockctx;
 564                         sasl_dispose( &ctx );
 565                 }
 566                 lc->lconn_sasl_sockctx = NULL;
 567                 lc->lconn_sasl_authctx = NULL;
 568         }
 569
 570         return LDAP_SUCCESS;
 571 }
 572
 573 int
 574 ldap_int_sasl_bind(
 575         LDAP                    *ld,
 576         const char              *dn,
 577         const char              *mechs,
 578         LDAPControl             **sctrls,
 579         LDAPControl             **cctrls,
 580         unsigned                flags,
 581         LDAP_SASL_INTERACT_PROC *interact,
 582         void * defaults )
 583 {
 584         char *data;
 585         const char *mech = NULL;
 586         const char *pmech = NULL;
 587         int                     saslrc, rc;
 588         sasl_ssf_t              *ssf = NULL;
 589         sasl_conn_t     *ctx, *oldctx = NULL;
 590         sasl_interact_t *prompts = NULL;
 591         unsigned credlen;
 592         struct berval ccred;
 593         ber_socket_t            sd;
 594         void    *ssl;
 595
 596         Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_bind: %s\n",
 597                 mechs ? mechs : "<null>", 0, 0 );
 598
 599         /* do a quick !LDAPv3 check... ldap_sasl_bind will do the rest. */
 600         if (ld->ld_version < LDAP_VERSION3) {
 601                 ld->ld_errno = LDAP_NOT_SUPPORTED;
 602                 return ld->ld_errno;
 603         }
 604
 605         rc = 0;
 606 #ifdef LDAP_R_COMPILE
 607         ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
 608 #endif
 609         ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
 610
 611         if ( sd == AC_SOCKET_INVALID ) {
 612                 /* not connected yet */
 613
 614                 rc = ldap_open_defconn( ld );
 615
 616                 if ( rc == 0 ) {
 617                         ber_sockbuf_ctrl( ld->ld_defconn->lconn_sb,
 618                                 LBER_SB_OPT_GET_FD, &sd );
 619
 620                         if( sd == AC_SOCKET_INVALID ) {
 621                                 ld->ld_errno = LDAP_LOCAL_ERROR;
 622                                 rc = ld->ld_errno;
 623                         }
 624                 }
 625         }
 626 #ifdef LDAP_R_COMPILE
 627         ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
 628 #endif
 629         if( rc != 0 ) return ld->ld_errno;
 630
 631         oldctx = ld->ld_defconn->lconn_sasl_authctx;
 632
 633         /* If we already have an authentication context, clear it out */
 634         if( oldctx ) {
 635                 if ( oldctx != ld->ld_defconn->lconn_sasl_sockctx ) {
 636                         sasl_dispose( &oldctx );
 637                 }
 638                 ld->ld_defconn->lconn_sasl_authctx = NULL;
 639         }
 640
 641         {
 642                 char *saslhost = ldap_host_connected_to( ld->ld_defconn->lconn_sb,
 643                         "localhost" );
 644                 rc = ldap_int_sasl_open( ld, ld->ld_defconn, saslhost );
 645                 LDAP_FREE( saslhost );
 646         }
 647
 648         if ( rc != LDAP_SUCCESS ) return rc;
 649
 650         ctx = ld->ld_defconn->lconn_sasl_authctx;
 651
 652         /* Check for TLS */
 653         ssl = ldap_pvt_tls_sb_ctx( ld->ld_defconn->lconn_sb );
 654         if ( ssl ) {
 655                 struct berval authid = BER_BVNULL;
 656                 ber_len_t fac;
 657
 658                 fac = ldap_pvt_tls_get_strength( ssl );
 659                 /* failure is OK, we just can't use SASL EXTERNAL */
 660                 (void) ldap_pvt_tls_get_my_dn( ssl, &authid, NULL, 0 );
 661
 662                 (void) ldap_int_sasl_external( ld, ld->ld_defconn, authid.bv_val, fac );
 663                 LDAP_FREE( authid.bv_val );
 664         }
 665
 666 #if !defined(_WIN32)
 667         /* Check for local */
 668         if ( ldap_pvt_url_scheme2proto(
 669                 ld->ld_defconn->lconn_server->lud_scheme ) == LDAP_PROTO_IPC )
 670         {
 671                 char authid[sizeof("gidNumber=4294967295+uidNumber=4294967295,"
 672                         "cn=peercred,cn=external,cn=auth")];
 673                 sprintf( authid, "gidNumber=%d+uidNumber=%d,"
 674                         "cn=peercred,cn=external,cn=auth",
 675                         (int) getegid(), (int) geteuid() );
 676                 (void) ldap_int_sasl_external( ld, ld->ld_defconn, authid,
 677                         LDAP_PVT_SASL_LOCAL_SSF );
 678         }
 679 #endif
 680
 681         /* (re)set security properties */
 682         sasl_setprop( ctx, SASL_SEC_PROPS,
 683                 &ld->ld_options.ldo_sasl_secprops );
 684
 685         ccred.bv_val = NULL;
 686         ccred.bv_len = 0;
 687
 688         do {
 689                 saslrc = sasl_client_start( ctx,
 690                         mechs,
 691 #if SASL_VERSION_MAJOR < 2
 692                         NULL,
 693 #endif
 694                         &prompts,
 695                         (SASL_CONST char **)&ccred.bv_val,
 696                         &credlen,
 697                         &mech );
 698
 699                 if( pmech == NULL && mech != NULL ) {
 700                         pmech = mech;
 701
 702                         if( flags != LDAP_SASL_QUIET ) {
 703                                 fprintf(stderr,
 704                                         "SASL/%s authentication started\n",
 705                                         pmech );
 706                         }
 707                 }
 708
 709                 if( saslrc == SASL_INTERACT ) {
 710                         int res;
 711                         if( !interact ) break;
 712                         res = (interact)( ld, flags, defaults, prompts );
 713
 714                         if( res != LDAP_SUCCESS ) break;
 715                 }
 716         } while ( saslrc == SASL_INTERACT );
 717
 718         ccred.bv_len = credlen;
 719
 720         if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
 721                 rc = ld->ld_errno = sasl_err2ldap( saslrc );
 722 #if SASL_VERSION_MAJOR >= 2
 723                 if ( ld->ld_error ) {
 724                         LDAP_FREE( ld->ld_error );
 725                 }
 726                 ld->ld_error = LDAP_STRDUP( sasl_errdetail( ctx ) );
 727 #endif
 728                 goto done;
 729         }
 730
 731         do {
 732                 struct berval *scred;
 733                 unsigned credlen;
 734
 735                 scred = NULL;
 736
 737                 rc = ldap_sasl_bind_s( ld, dn, mech, &ccred, sctrls, cctrls,
 738                         &scred );
 739
 740                 if ( ccred.bv_val != NULL ) {
 741 #if SASL_VERSION_MAJOR < 2
 742                         LDAP_FREE( ccred.bv_val );
 743 #endif
 744                         ccred.bv_val = NULL;
 745                 }
 746
 747                 if ( rc != LDAP_SUCCESS && rc != LDAP_SASL_BIND_IN_PROGRESS ) {
 748                         if( scred ) {
 749                                 /* and server provided us with data? */
 750                                 Debug( LDAP_DEBUG_TRACE,
 751                                         "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
 752                                         rc, saslrc, scred ? scred->bv_len : -1 );
 753                                 ber_bvfree( scred );
 754                                 scred = NULL;
 755                         }
 756                         rc = ld->ld_errno;
 757                         goto done;
 758                 }
 759
 760                 if( rc == LDAP_SUCCESS && saslrc == SASL_OK ) {
 761                         /* we're done, no need to step */
 762                         if( scred ) {
 763                                 /* but we got additional data? */
 764 #define KLUDGE_FOR_MSAD
 765 #ifdef  KLUDGE_FOR_MSAD
 766                                 /*
 767                                  * MSAD provides empty additional data in violation of LDAP
 768                                  * technical specifications.  As no existing SASL mechanism
 769                                  * allows empty data with an outcome message, just ignore it
 770                                  * for now.  Hopefully MS will fix their bug before someone
 771                                  * defines a mechanism with possibly empty additional data.
 772                                  */
 773                                 if( scred->bv_len == 0 ) {
 774                                         Debug( LDAP_DEBUG_ANY,
 775                                                 "ldap_int_sasl_bind: ignoring "
 776                                                         " bogus empty data provided with SASL outcome message.\n",
 777                                                 rc, saslrc, scred->bv_len );
 778                                         ber_bvfree( scred );
 779                                 } else
 780 #endif
 781                                 {
 782                                         Debug( LDAP_DEBUG_TRACE,
 783                                                 "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
 784                                                 rc, saslrc, scred->bv_len );
 785                                         rc = ld->ld_errno = LDAP_LOCAL_ERROR;
 786                                         ber_bvfree( scred );
 787                                         goto done;
 788                                 }
 789                         }
 790                         break;
 791                 }
 792
 793                 do {
 794                         if( ! scred ) {
 795                                 /* no data! */
 796                                 Debug( LDAP_DEBUG_TRACE,
 797                                         "ldap_int_sasl_bind: no data in step!\n",
 798                                         0, 0, 0 );
 799                         }
 800
 801                         saslrc = sasl_client_step( ctx,
 802                                 (scred == NULL) ? NULL : scred->bv_val,
 803                                 (scred == NULL) ? 0 : scred->bv_len,
 804                                 &prompts,
 805                                 (SASL_CONST char **)&ccred.bv_val,
 806                                 &credlen );
 807
 808                         Debug( LDAP_DEBUG_TRACE, "sasl_client_step: %d\n",
 809                                 saslrc, 0, 0 );
 810
 811                         if( saslrc == SASL_INTERACT ) {
 812                                 int res;
 813                                 if( !interact ) break;
 814                                 res = (interact)( ld, flags, defaults, prompts );
 815                                 if( res != LDAP_SUCCESS ) break;
 816                         }
 817                 } while ( saslrc == SASL_INTERACT );
 818
 819                 ccred.bv_len = credlen;
 820                 ber_bvfree( scred );
 821
 822                 if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
 823                         ld->ld_errno = sasl_err2ldap( saslrc );
 824 #if SASL_VERSION_MAJOR >= 2
 825                         if ( ld->ld_error ) {
 826                                 LDAP_FREE( ld->ld_error );
 827                         }
 828                         ld->ld_error = LDAP_STRDUP( sasl_errdetail( ctx ) );
 829 #endif
 830                         rc = ld->ld_errno;
 831                         goto done;
 832                 }
 833         } while ( rc == LDAP_SASL_BIND_IN_PROGRESS );
 834
 835         if ( rc != LDAP_SUCCESS ) goto done;
 836
 837         if ( saslrc != SASL_OK ) {
 838 #if SASL_VERSION_MAJOR >= 2
 839                 if ( ld->ld_error ) {
 840                         LDAP_FREE( ld->ld_error );
 841                 }
 842                 ld->ld_error = LDAP_STRDUP( sasl_errdetail( ctx ) );
 843 #endif
 844                 rc = ld->ld_errno = sasl_err2ldap( saslrc );
 845                 goto done;
 846         }
 847
 848         if( flags != LDAP_SASL_QUIET ) {
 849                 saslrc = sasl_getprop( ctx, SASL_USERNAME,
 850                         (SASL_CONST void **) &data );
 851                 if( saslrc == SASL_OK && data && *data ) {
 852                         fprintf( stderr, "SASL username: %s\n", data );
 853                 }
 854
 855 #if SASL_VERSION_MAJOR < 2
 856                 saslrc = sasl_getprop( ctx, SASL_REALM,
 857                         (SASL_CONST void **) &data );
 858                 if( saslrc == SASL_OK && data && *data ) {
 859                         fprintf( stderr, "SASL realm: %s\n", data );
 860                 }
 861 #endif
 862         }
 863
 864         saslrc = sasl_getprop( ctx, SASL_SSF, (SASL_CONST void **) &ssf );
 865         if( saslrc == SASL_OK ) {
 866                 if( flags != LDAP_SASL_QUIET ) {
 867                         fprintf( stderr, "SASL SSF: %lu\n",
 868                                 (unsigned long) *ssf );
 869                 }
 870
 871                 if( ssf && *ssf ) {
 872                         if ( ld->ld_defconn->lconn_sasl_sockctx ) {
 873                                 oldctx = ld->ld_defconn->lconn_sasl_sockctx;
 874                                 sasl_dispose( &oldctx );
 875                                 ldap_pvt_sasl_remove( ld->ld_defconn->lconn_sb );
 876                         }
 877                         ldap_pvt_sasl_install( ld->ld_defconn->lconn_sb, ctx );
 878                         ld->ld_defconn->lconn_sasl_sockctx = ctx;
 879
 880                         if( flags != LDAP_SASL_QUIET ) {
 881                                 fprintf( stderr, "SASL data security layer installed.\n" );
 882                         }
 883                 }
 884         }
 885         ld->ld_defconn->lconn_sasl_authctx = ctx;
 886
 887 done:
 888         return rc;
 889 }
 890
 891 int
 892 ldap_int_sasl_external(
 893         LDAP *ld,
 894         LDAPConn *conn,
 895         const char * authid,
 896         ber_len_t ssf )
 897 {
 898         int sc;
 899         sasl_conn_t *ctx;
 900 #if SASL_VERSION_MAJOR < 2
 901         sasl_external_properties_t extprops;
 902 #endif
 903
 904         ctx = conn->lconn_sasl_authctx;
 905
 906         if ( ctx == NULL ) {
 907                 return LDAP_LOCAL_ERROR;
 908         }
 909
 910 #if SASL_VERSION_MAJOR >= 2
 911         sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, &ssf );
 912         if ( sc == SASL_OK )
 913                 sc = sasl_setprop( ctx, SASL_AUTH_EXTERNAL, authid );
 914 #else
 915         memset( &extprops, '\0', sizeof(extprops) );
 916         extprops.ssf = ssf;
 917         extprops.auth_id = (char *) authid;
 918
 919         sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 920                 (void *) &extprops );
 921 #endif
 922
 923         if ( sc != SASL_OK ) {
 924                 return LDAP_LOCAL_ERROR;
 925         }
 926
 927         return LDAP_SUCCESS;
 928 }
 929
 930
 931 #define GOT_MINSSF      1
 932 #define GOT_MAXSSF      2
 933 #define GOT_MAXBUF      4
 934
 935 static struct {
 936         struct berval key;
 937         int sflag;
 938         int ival;
 939         int idef;
 940 } sprops[] = {
 941         { BER_BVC("none"), 0, 0, 0 },
 942         { BER_BVC("nodict"), SASL_SEC_NODICTIONARY, 0, 0 },
 943         { BER_BVC("noplain"), SASL_SEC_NOPLAINTEXT, 0, 0 },
 944         { BER_BVC("noactive"), SASL_SEC_NOACTIVE, 0, 0 },
 945         { BER_BVC("passcred"), SASL_SEC_PASS_CREDENTIALS, 0, 0 },
 946         { BER_BVC("forwardsec"), SASL_SEC_FORWARD_SECRECY, 0, 0 },
 947         { BER_BVC("noanonymous"), SASL_SEC_NOANONYMOUS, 0, 0 },
 948         { BER_BVC("minssf="), 0, GOT_MINSSF, 0 },
 949         { BER_BVC("maxssf="), 0, GOT_MAXSSF, INT_MAX },
 950         { BER_BVC("maxbufsize="), 0, GOT_MAXBUF, 65536 },
 951         { BER_BVNULL, 0, 0, 0 }
 952 };
 953
 954 void ldap_pvt_sasl_secprops_unparse(
 955         sasl_security_properties_t *secprops,
 956         struct berval *out )
 957 {
 958         int i, l = 0;
 959         int comma;
 960         char *ptr;
 961
 962         if ( secprops == NULL || out == NULL ) {
 963                 return;
 964         }
 965
 966         comma = 0;
 967         for ( i=0; !BER_BVISNULL( &sprops[i].key ); i++ ) {
 968                 if ( sprops[i].ival ) {
 969                         int v = 0;
 970
 971                         switch( sprops[i].ival ) {
 972                         case GOT_MINSSF: v = secprops->min_ssf; break;
 973                         case GOT_MAXSSF: v = secprops->max_ssf; break;
 974                         case GOT_MAXBUF: v = secprops->maxbufsize; break;
 975                         }
 976                         /* It is the default, ignore it */
 977                         if ( v == sprops[i].idef ) continue;
 978
 979                         l += sprops[i].key.bv_len + 24;
 980                 } else if ( sprops[i].sflag ) {
 981                         if ( sprops[i].sflag & secprops->security_flags ) {
 982                                 l += sprops[i].key.bv_len;
 983                         }
 984                 } else if ( secprops->security_flags == 0 ) {
 985                         l += sprops[i].key.bv_len;
 986                 }
 987                 if ( comma ) l++;
 988                 comma = 1;
 989         }
 990         l++;
 991
 992         out->bv_val = LDAP_MALLOC( l );
 993         if ( out->bv_val == NULL ) {
 994                 out->bv_len = 0;
 995                 return;
 996         }
 997
 998         ptr = out->bv_val;
 999         comma = 0;
1000         for ( i=0; !BER_BVISNULL( &sprops[i].key ); i++ ) {
1001                 if ( sprops[i].ival ) {
1002                         int v = 0;
1003
1004                         switch( sprops[i].ival ) {
1005                         case GOT_MINSSF: v = secprops->min_ssf; break;
1006                         case GOT_MAXSSF: v = secprops->max_ssf; break;
1007                         case GOT_MAXBUF: v = secprops->maxbufsize; break;
1008                         }
1009                         /* It is the default, ignore it */
1010                         if ( v == sprops[i].idef ) continue;
1011
1012                         if ( comma ) *ptr++ = ',';
1013                         ptr += sprintf(ptr, "%s%d", sprops[i].key.bv_val, v );
1014                         comma = 1;
1015                 } else if ( sprops[i].sflag ) {
1016                         if ( sprops[i].sflag & secprops->security_flags ) {
1017                                 if ( comma ) *ptr++ = ',';
1018                                 ptr += sprintf(ptr, "%s", sprops[i].key.bv_val );
1019                                 comma = 1;
1020                         }
1021                 } else if ( secprops->security_flags == 0 ) {
1022                         if ( comma ) *ptr++ = ',';
1023                         ptr += sprintf(ptr, "%s", sprops[i].key.bv_val );
1024                         comma = 1;
1025                 }
1026         }
1027         out->bv_len = ptr - out->bv_val;
1028 }
1029
1030 int ldap_pvt_sasl_secprops(
1031         const char *in,
1032         sasl_security_properties_t *secprops )
1033 {
1034         int i, j, l;
1035         char **props;
1036         unsigned sflags = 0;
1037         int got_sflags = 0;
1038         sasl_ssf_t max_ssf = 0;
1039         int got_max_ssf = 0;
1040         sasl_ssf_t min_ssf = 0;
1041         int got_min_ssf = 0;
1042         unsigned maxbufsize = 0;
1043         int got_maxbufsize = 0;
1044
1045         if( secprops == NULL ) {
1046                 return LDAP_PARAM_ERROR;
1047         }
1048         props = ldap_str2charray( in, "," );
1049         if( props == NULL ) {
1050                 return LDAP_PARAM_ERROR;
1051         }
1052
1053         for( i=0; props[i]; i++ ) {
1054                 l = strlen( props[i] );
1055                 for ( j=0; !BER_BVISNULL( &sprops[j].key ); j++ ) {
1056                         if ( l < sprops[j].key.bv_len ) continue;
1057                         if ( strncasecmp( props[i], sprops[j].key.bv_val,
1058                                 sprops[j].key.bv_len )) continue;
1059                         if ( sprops[j].ival ) {
1060                                 unsigned v;
1061                                 char *next = NULL;
1062                                 if ( !isdigit( (unsigned char)props[i][sprops[j].key.bv_len] ))
1063                                         continue;
1064                                 v = strtoul( &props[i][sprops[j].key.bv_len], &next, 10 );
1065                                 if ( next == &props[i][sprops[j].key.bv_len] || next[0] != '\0' ) continue;
1066                                 switch( sprops[j].ival ) {
1067                                 case GOT_MINSSF:
1068                                         min_ssf = v; got_min_ssf++; break;
1069                                 case GOT_MAXSSF:
1070                                         max_ssf = v; got_max_ssf++; break;
1071                                 case GOT_MAXBUF:
1072                                         maxbufsize = v; got_maxbufsize++; break;
1073                                 }
1074                         } else {
1075                                 if ( props[i][sprops[j].key.bv_len] ) continue;
1076                                 if ( sprops[j].sflag )
1077                                         sflags |= sprops[j].sflag;
1078                                 else
1079                                         sflags = 0;
1080                                 got_sflags++;
1081                         }
1082                         break;
1083                 }
1084                 if ( BER_BVISNULL( &sprops[j].key )) {
1085                         ldap_charray_free( props );
1086                         return LDAP_NOT_SUPPORTED;
1087                 }
1088         }
1089
1090         if(got_sflags) {
1091                 secprops->security_flags = sflags;
1092         }
1093         if(got_min_ssf) {
1094                 secprops->min_ssf = min_ssf;
1095         }
1096         if(got_max_ssf) {
1097                 secprops->max_ssf = max_ssf;
1098         }
1099         if(got_maxbufsize) {
1100                 secprops->maxbufsize = maxbufsize;
1101         }
1102
1103         ldap_charray_free( props );
1104         return LDAP_SUCCESS;
1105 }
1106
1107 int
1108 ldap_int_sasl_config( struct ldapoptions *lo, int option, const char *arg )
1109 {
1110         int rc;
1111
1112         switch( option ) {
1113         case LDAP_OPT_X_SASL_SECPROPS:
1114                 rc = ldap_pvt_sasl_secprops( arg, &lo->ldo_sasl_secprops );
1115                 if( rc == LDAP_SUCCESS ) return 0;
1116         }
1117
1118         return -1;
1119 }
1120
1121 int
1122 ldap_int_sasl_get_option( LDAP *ld, int option, void *arg )
1123 {
1124         if ( ld == NULL )
1125                 return -1;
1126
1127         switch ( option ) {
1128                 case LDAP_OPT_X_SASL_MECH: {
1129                         *(char **)arg = ld->ld_options.ldo_def_sasl_mech
1130                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_mech ) : NULL;
1131                 } break;
1132                 case LDAP_OPT_X_SASL_REALM: {
1133                         *(char **)arg = ld->ld_options.ldo_def_sasl_realm
1134                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_realm ) : NULL;
1135                 } break;
1136                 case LDAP_OPT_X_SASL_AUTHCID: {
1137                         *(char **)arg = ld->ld_options.ldo_def_sasl_authcid
1138                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authcid ) : NULL;
1139                 } break;
1140                 case LDAP_OPT_X_SASL_AUTHZID: {
1141                         *(char **)arg = ld->ld_options.ldo_def_sasl_authzid
1142                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authzid ) : NULL;
1143                 } break;
1144
1145                 case LDAP_OPT_X_SASL_SSF: {
1146                         int sc;
1147                         sasl_ssf_t      *ssf;
1148                         sasl_conn_t *ctx;
1149
1150                         if( ld->ld_defconn == NULL ) {
1151                                 return -1;
1152                         }
1153
1154                         ctx = ld->ld_defconn->lconn_sasl_sockctx;
1155
1156                         if ( ctx == NULL ) {
1157                                 return -1;
1158                         }
1159
1160                         sc = sasl_getprop( ctx, SASL_SSF,
1161                                 (SASL_CONST void **) &ssf );
1162
1163                         if ( sc != SASL_OK ) {
1164                                 return -1;
1165                         }
1166
1167                         *(ber_len_t *)arg = *ssf;
1168                 } break;
1169
1170                 case LDAP_OPT_X_SASL_SSF_EXTERNAL:
1171                         /* this option is write only */
1172                         return -1;
1173
1174                 case LDAP_OPT_X_SASL_SSF_MIN:
1175                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.min_ssf;
1176                         break;
1177                 case LDAP_OPT_X_SASL_SSF_MAX:
1178                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.max_ssf;
1179                         break;
1180                 case LDAP_OPT_X_SASL_MAXBUFSIZE:
1181                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.maxbufsize;
1182                         break;
1183
1184                 case LDAP_OPT_X_SASL_SECPROPS:
1185                         /* this option is write only */
1186                         return -1;
1187
1188                 default:
1189                         return -1;
1190         }
1191         return 0;
1192 }
1193
1194 int
1195 ldap_int_sasl_set_option( LDAP *ld, int option, void *arg )
1196 {
1197         if ( ld == NULL || arg == NULL )
1198                 return -1;
1199
1200         switch ( option ) {
1201         case LDAP_OPT_X_SASL_SSF:
1202                 /* This option is read-only */
1203                 return -1;
1204
1205         case LDAP_OPT_X_SASL_SSF_EXTERNAL: {
1206                 int sc;
1207 #if SASL_VERSION_MAJOR < 2
1208                 sasl_external_properties_t extprops;
1209 #endif
1210                 sasl_conn_t *ctx;
1211
1212                 if( ld->ld_defconn == NULL ) {
1213                         return -1;
1214                 }
1215
1216                 ctx = ld->ld_defconn->lconn_sasl_authctx;
1217
1218                 if ( ctx == NULL ) {
1219                         return -1;
1220                 }
1221
1222 #if SASL_VERSION_MAJOR >= 2
1223                 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, arg);
1224 #else
1225                 memset(&extprops, 0L, sizeof(extprops));
1226
1227                 extprops.ssf = * (ber_len_t *) arg;
1228
1229                 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
1230                         (void *) &extprops );
1231 #endif
1232
1233                 if ( sc != SASL_OK ) {
1234                         return -1;
1235                 }
1236                 } break;
1237
1238         case LDAP_OPT_X_SASL_SSF_MIN:
1239                 ld->ld_options.ldo_sasl_secprops.min_ssf = *(ber_len_t *)arg;
1240                 break;
1241         case LDAP_OPT_X_SASL_SSF_MAX:
1242                 ld->ld_options.ldo_sasl_secprops.max_ssf = *(ber_len_t *)arg;
1243                 break;
1244         case LDAP_OPT_X_SASL_MAXBUFSIZE:
1245                 ld->ld_options.ldo_sasl_secprops.maxbufsize = *(ber_len_t *)arg;
1246                 break;
1247
1248         case LDAP_OPT_X_SASL_SECPROPS: {
1249                 int sc;
1250                 sc = ldap_pvt_sasl_secprops( (char *) arg,
1251                         &ld->ld_options.ldo_sasl_secprops );
1252
1253                 return sc == LDAP_SUCCESS ? 0 : -1;
1254                 }
1255
1256         default:
1257                 return -1;
1258         }
1259         return 0;
1260 }
1261
1262 #ifdef LDAP_R_COMPILE
1263 #define LDAP_DEBUG_R_SASL
1264 void *ldap_pvt_sasl_mutex_new(void)
1265 {
1266         ldap_pvt_thread_mutex_t *mutex;
1267
1268         mutex = (ldap_pvt_thread_mutex_t *) LDAP_MALLOC(
1269                 sizeof(ldap_pvt_thread_mutex_t) );
1270
1271         if ( ldap_pvt_thread_mutex_init( mutex ) == 0 ) {
1272                 return mutex;
1273         }
1274 #ifndef LDAP_DEBUG_R_SASL
1275         assert( 0 );
1276 #endif /* !LDAP_DEBUG_R_SASL */
1277         return NULL;
1278 }
1279
1280 int ldap_pvt_sasl_mutex_lock(void *mutex)
1281 {
1282 #ifdef LDAP_DEBUG_R_SASL
1283         if ( mutex == NULL ) {
1284                 return SASL_OK;
1285         }
1286 #else /* !LDAP_DEBUG_R_SASL */
1287         assert( mutex != NULL );
1288 #endif /* !LDAP_DEBUG_R_SASL */
1289         return ldap_pvt_thread_mutex_lock( (ldap_pvt_thread_mutex_t *)mutex )
1290                 ? SASL_FAIL : SASL_OK;
1291 }
1292
1293 int ldap_pvt_sasl_mutex_unlock(void *mutex)
1294 {
1295 #ifdef LDAP_DEBUG_R_SASL
1296         if ( mutex == NULL ) {
1297                 return SASL_OK;
1298         }
1299 #else /* !LDAP_DEBUG_R_SASL */
1300         assert( mutex != NULL );
1301 #endif /* !LDAP_DEBUG_R_SASL */
1302         return ldap_pvt_thread_mutex_unlock( (ldap_pvt_thread_mutex_t *)mutex )
1303                 ? SASL_FAIL : SASL_OK;
1304 }
1305
1306 void ldap_pvt_sasl_mutex_dispose(void *mutex)
1307 {
1308 #ifdef LDAP_DEBUG_R_SASL
1309         if ( mutex == NULL ) {
1310                 return;
1311         }
1312 #else /* !LDAP_DEBUG_R_SASL */
1313         assert( mutex != NULL );
1314 #endif /* !LDAP_DEBUG_R_SASL */
1315         (void) ldap_pvt_thread_mutex_destroy( (ldap_pvt_thread_mutex_t *)mutex );
1316         LDAP_FREE( mutex );
1317 }
1318 #endif
1319
1320 #else
1321 int ldap_int_sasl_init( void )
1322 { return LDAP_SUCCESS; }
1323
1324 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
1325 { return LDAP_SUCCESS; }
1326
1327 int
1328 ldap_int_sasl_bind(
1329         LDAP                    *ld,
1330         const char              *dn,
1331         const char              *mechs,
1332         LDAPControl             **sctrls,
1333         LDAPControl             **cctrls,
1334         unsigned                flags,
1335         LDAP_SASL_INTERACT_PROC *interact,
1336         void * defaults )
1337 { return LDAP_NOT_SUPPORTED; }
1338
1339 int
1340 ldap_int_sasl_external(
1341         LDAP *ld,
1342         LDAPConn *conn,
1343         const char * authid,
1344         ber_len_t ssf )
1345 { return LDAP_SUCCESS; }
1346
1347 #endif /* HAVE_CYRUS_SASL */