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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1999-2000 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6
   7 #include "portable.h"
   8
   9 #include <stdlib.h>
  10 #include <stdio.h>
  11
  12 #include <ac/socket.h>
  13 #include <ac/string.h>
  14 #include <ac/time.h>
  15 #include <ac/errno.h>
  16 #include <ac/ctype.h>
  17
  18 #include "ldap-int.h"
  19
  20 #ifdef HAVE_CYRUS_SASL
  21
  22 #ifdef LDAP_R_COMPILE
  23 ldap_pvt_thread_mutex_t ldap_int_sasl_mutex;
  24 #endif
  25
  26 #include <sasl.h>
  27
  28 /*
  29 * Various Cyrus SASL related stuff.
  30 */
  31
  32 int ldap_int_sasl_init( void )
  33 {
  34         /* XXX not threadsafe */
  35         static int sasl_initialized = 0;
  36
  37         static sasl_callback_t client_callbacks[] = {
  38 #ifdef SASL_CB_GETREALM
  39                 { SASL_CB_GETREALM, NULL, NULL },
  40 #endif
  41                 { SASL_CB_USER, NULL, NULL },
  42                 { SASL_CB_AUTHNAME, NULL, NULL },
  43                 { SASL_CB_PASS, NULL, NULL },
  44                 { SASL_CB_ECHOPROMPT, NULL, NULL },
  45                 { SASL_CB_NOECHOPROMPT, NULL, NULL },
  46                 { SASL_CB_LIST_END, NULL, NULL }
  47         };
  48
  49         if ( sasl_initialized ) {
  50                 return 0;
  51         }
  52
  53 #ifndef CSRIMALLOC
  54         sasl_set_alloc(
  55                 ber_memalloc,
  56                 ber_memcalloc,
  57                 ber_memrealloc,
  58                 ber_memfree );
  59 #endif /* CSRIMALLOC */
  60
  61 #ifdef LDAP_R_COMPILE
  62         sasl_set_mutex(
  63                 ldap_pvt_sasl_mutex_new,
  64                 ldap_pvt_sasl_mutex_lock,
  65                 ldap_pvt_sasl_mutex_unlock,
  66                 ldap_pvt_sasl_mutex_dispose );
  67
  68         ldap_pvt_thread_mutex_init( &ldap_int_sasl_mutex );
  69 #endif
  70
  71         if ( sasl_client_init( client_callbacks ) == SASL_OK ) {
  72                 sasl_initialized = 1;
  73                 return 0;
  74         }
  75
  76         return -1;
  77 }
  78
  79 /*
  80  * SASL encryption support for LBER Sockbufs
  81  */
  82
  83 struct sb_sasl_data {
  84         sasl_conn_t             *sasl_context;
  85         Sockbuf_Buf             sec_buf_in;
  86         Sockbuf_Buf             buf_in;
  87         Sockbuf_Buf             buf_out;
  88 };
  89
  90 static int
  91 sb_sasl_setup( Sockbuf_IO_Desc *sbiod, void *arg )
  92 {
  93         struct sb_sasl_data     *p;
  94
  95         assert( sbiod != NULL );
  96
  97         p = LBER_MALLOC( sizeof( *p ) );
  98         if ( p == NULL )
  99                 return -1;
 100         p->sasl_context = (sasl_conn_t *)arg;
 101         ber_pvt_sb_buf_init( &p->sec_buf_in );
 102         ber_pvt_sb_buf_init( &p->buf_in );
 103         ber_pvt_sb_buf_init( &p->buf_out );
 104         if ( ber_pvt_sb_grow_buffer( &p->sec_buf_in, SASL_MIN_BUFF_SIZE ) < 0 ) {
 105                 errno = ENOMEM;
 106                 return -1;
 107         }
 108
 109         sbiod->sbiod_pvt = p;
 110
 111         return 0;
 112 }
 113
 114 static int
 115 sb_sasl_remove( Sockbuf_IO_Desc *sbiod )
 116 {
 117         struct sb_sasl_data     *p;
 118
 119         assert( sbiod != NULL );
 120
 121         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 122         ber_pvt_sb_buf_destroy( &p->sec_buf_in );
 123         ber_pvt_sb_buf_destroy( &p->buf_in );
 124         ber_pvt_sb_buf_destroy( &p->buf_out );
 125         LBER_FREE( p );
 126         sbiod->sbiod_pvt = NULL;
 127         return 0;
 128 }
 129
 130 static ber_len_t
 131 sb_sasl_pkt_length( const unsigned char *buf, int debuglevel )
 132 {
 133         ber_len_t               size;
 134
 135         assert( buf != NULL );
 136
 137         size = buf[0] << 24
 138                 | buf[1] << 16
 139                 | buf[2] << 8
 140                 | buf[3];
 141
 142         /* we really should check against actual buffer size set
 143          * in the secopts.
 144          */
 145         if ( size > SASL_MAX_BUFF_SIZE ) {
 146                 /* somebody is trying to mess me up. */
 147                 ber_log_printf( LDAP_DEBUG_ANY, debuglevel,
 148                         "sb_sasl_pkt_length: received illegal packet length "
 149                         "of %lu bytes\n", (unsigned long)size );
 150                 size = 16; /* this should lead to an error. */
 151         }
 152
 153         return size + 4; /* include the size !!! */
 154 }
 155
 156 /* Drop a processed packet from the input buffer */
 157 static void
 158 sb_sasl_drop_packet ( Sockbuf_Buf *sec_buf_in, int debuglevel )
 159 {
 160         ber_slen_t                      len;
 161
 162         len = sec_buf_in->buf_ptr - sec_buf_in->buf_end;
 163         if ( len > 0 )
 164                 memmove( sec_buf_in->buf_base, sec_buf_in->buf_base +
 165                         sec_buf_in->buf_end, len );
 166
 167         if ( len >= 4 ) {
 168                 sec_buf_in->buf_end = sb_sasl_pkt_length( sec_buf_in->buf_base,
 169                         debuglevel);
 170         }
 171         else {
 172                 sec_buf_in->buf_end = 0;
 173         }
 174         sec_buf_in->buf_ptr = len;
 175 }
 176
 177 static ber_slen_t
 178 sb_sasl_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
 179 {
 180         struct sb_sasl_data     *p;
 181         ber_slen_t              ret, bufptr;
 182
 183         assert( sbiod != NULL );
 184         assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
 185
 186         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 187
 188         /* Are there anything left in the buffer? */
 189         ret = ber_pvt_sb_copy_out( &p->buf_in, buf, len );
 190         bufptr = ret;
 191         len -= ret;
 192
 193         if ( len == 0 )
 194                 return bufptr;
 195
 196         ber_pvt_sb_buf_destroy( &p->buf_in );
 197
 198         /* Read the length of the packet */
 199         while ( p->sec_buf_in.buf_ptr < 4 ) {
 200                 ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base,
 201                         4 - p->sec_buf_in.buf_ptr );
 202 #ifdef EINTR
 203                 if ( ( ret < 0 ) && ( errno == EINTR ) )
 204                         continue;
 205 #endif
 206                 if ( ret <= 0 )
 207                         return ret;
 208
 209                 p->sec_buf_in.buf_ptr += ret;
 210         }
 211
 212         /* The new packet always starts at p->sec_buf_in.buf_base */
 213         ret = sb_sasl_pkt_length( p->sec_buf_in.buf_base,
 214                 sbiod->sbiod_sb->sb_debug );
 215
 216         /* Grow the packet buffer if neccessary */
 217         if ( ( p->sec_buf_in.buf_size < ret ) &&
 218                 ber_pvt_sb_grow_buffer( &p->sec_buf_in, ret ) < 0 )
 219         {
 220                 errno = ENOMEM;
 221                 return -1;
 222         }
 223         p->sec_buf_in.buf_end = ret;
 224
 225         /* Did we read the whole encrypted packet? */
 226         while ( p->sec_buf_in.buf_ptr < p->sec_buf_in.buf_end ) {
 227                 /* No, we have got only a part of it */
 228                 ret = p->sec_buf_in.buf_end - p->sec_buf_in.buf_ptr;
 229
 230                 ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base +
 231                         p->sec_buf_in.buf_ptr, ret );
 232 #ifdef EINTR
 233                 if ( ( ret < 0 ) && ( errno == EINTR ) )
 234                         continue;
 235 #endif
 236                 if ( ret <= 0 )
 237                         return ret;
 238
 239                 p->sec_buf_in.buf_ptr += ret;
 240         }
 241
 242         /* Decode the packet */
 243         ret = sasl_decode( p->sasl_context, p->sec_buf_in.buf_base,
 244                 p->sec_buf_in.buf_end, &p->buf_in.buf_base,
 245                 (unsigned *)&p->buf_in.buf_end );
 246         if ( ret != SASL_OK ) {
 247                 ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
 248                         "sb_sasl_read: failed to decode packet: %s\n",
 249                         sasl_errstring( ret, NULL, NULL ) );
 250                 sb_sasl_drop_packet( &p->sec_buf_in,
 251                         sbiod->sbiod_sb->sb_debug );
 252                 errno = EIO;
 253                 return -1;
 254         }
 255
 256         /* Drop the packet from the input buffer */
 257         sb_sasl_drop_packet( &p->sec_buf_in, sbiod->sbiod_sb->sb_debug );
 258
 259         p->buf_in.buf_size = p->buf_in.buf_end;
 260
 261         bufptr += ber_pvt_sb_copy_out( &p->buf_in, (char*) buf + bufptr, len );
 262
 263         return bufptr;
 264 }
 265
 266 static ber_slen_t
 267 sb_sasl_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
 268 {
 269         struct sb_sasl_data     *p;
 270         int                     ret;
 271
 272         assert( sbiod != NULL );
 273         assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
 274
 275         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 276
 277         /* Are there anything left in the buffer? */
 278         if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) {
 279                 ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
 280                 if ( ret <= 0 )
 281                         return ret;
 282         }
 283
 284         /* now encode the next packet. */
 285         ber_pvt_sb_buf_destroy( &p->buf_out );
 286         ret = sasl_encode( p->sasl_context, buf, len, &p->buf_out.buf_base,
 287                 (unsigned *)&p->buf_out.buf_size );
 288         if ( ret != SASL_OK ) {
 289                 ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
 290                         "sb_sasl_write: failed to encode packet: %s\n",
 291                         sasl_errstring( ret, NULL, NULL ) );
 292                 return -1;
 293         }
 294         p->buf_out.buf_end = p->buf_out.buf_size;
 295
 296         ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
 297         if ( ret <= 0 )
 298                 return ret;
 299         return len;
 300 }
 301
 302 static int
 303 sb_sasl_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
 304 {
 305         struct sb_sasl_data     *p;
 306
 307         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 308
 309         if ( opt == LBER_SB_OPT_DATA_READY ) {
 310                 if ( p->buf_in.buf_ptr != p->buf_in.buf_end )
 311                         return 1;
 312         }
 313
 314         return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
 315 }
 316
 317 Sockbuf_IO ldap_pvt_sockbuf_io_sasl = {
 318         sb_sasl_setup,          /* sbi_setup */
 319         sb_sasl_remove,         /* sbi_remove */
 320         sb_sasl_ctrl,           /* sbi_ctrl */
 321         sb_sasl_read,           /* sbi_read */
 322         sb_sasl_write,          /* sbi_write */
 323         NULL                    /* sbi_close */
 324 };
 325
 326 int ldap_pvt_sasl_install( Sockbuf *sb, void *ctx_arg )
 327 {
 328         Debug( LDAP_DEBUG_TRACE, "ldap_pvt_sasl_install\n",
 329                 0, 0, 0 );
 330
 331         /* don't install the stuff unless security has been negotiated */
 332
 333         if ( !ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO,
 334                         &ldap_pvt_sockbuf_io_sasl ) )
 335         {
 336 #ifdef LDAP_DEBUG
 337                 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug,
 338                         LBER_SBIOD_LEVEL_APPLICATION, (void *)"sasl_" );
 339 #endif
 340                 ber_sockbuf_add_io( sb, &ldap_pvt_sockbuf_io_sasl,
 341                         LBER_SBIOD_LEVEL_APPLICATION, ctx_arg );
 342         }
 343
 344         return LDAP_SUCCESS;
 345 }
 346
 347 static int
 348 sasl_err2ldap( int saslerr )
 349 {
 350         int rc;
 351
 352         switch (saslerr) {
 353                 case SASL_CONTINUE:
 354                         rc = LDAP_MORE_RESULTS_TO_RETURN;
 355                         break;
 356                 case SASL_INTERACT:
 357                         rc = LDAP_LOCAL_ERROR;
 358                         break;
 359                 case SASL_OK:
 360                         rc = LDAP_SUCCESS;
 361                         break;
 362                 case SASL_FAIL:
 363                         rc = LDAP_LOCAL_ERROR;
 364                         break;
 365                 case SASL_NOMEM:
 366                         rc = LDAP_NO_MEMORY;
 367                         break;
 368                 case SASL_NOMECH:
 369                         rc = LDAP_AUTH_UNKNOWN;
 370                         break;
 371                 case SASL_BADAUTH:
 372                         rc = LDAP_AUTH_UNKNOWN;
 373                         break;
 374                 case SASL_NOAUTHZ:
 375                         rc = LDAP_PARAM_ERROR;
 376                         break;
 377                 case SASL_TOOWEAK:
 378                 case SASL_ENCRYPT:
 379                         rc = LDAP_AUTH_UNKNOWN;
 380                         break;
 381                 default:
 382                         rc = LDAP_LOCAL_ERROR;
 383                         break;
 384         }
 385
 386         assert( rc == LDAP_SUCCESS || LDAP_API_ERROR( rc ) );
 387         return rc;
 388 }
 389
 390 int
 391 ldap_int_sasl_open(
 392         LDAP *ld,
 393         LDAPConn *lc,
 394         const char * host,
 395         ber_len_t ssf )
 396 {
 397         int rc;
 398         sasl_conn_t *ctx;
 399
 400         sasl_callback_t *session_callbacks =
 401                 ber_memcalloc( 2, sizeof( sasl_callback_t ) );
 402
 403         if( session_callbacks == NULL ) return LDAP_NO_MEMORY;
 404
 405         session_callbacks[0].id = SASL_CB_USER;
 406         session_callbacks[0].proc = NULL;
 407         session_callbacks[0].context = ld;
 408
 409         session_callbacks[1].id = SASL_CB_LIST_END;
 410         session_callbacks[1].proc = NULL;
 411         session_callbacks[1].context = NULL;
 412
 413         assert( lc->lconn_sasl_ctx == NULL );
 414
 415         if ( host == NULL ) {
 416                 ld->ld_errno = LDAP_LOCAL_ERROR;
 417                 return ld->ld_errno;
 418         }
 419
 420         rc = sasl_client_new( "ldap", host, session_callbacks,
 421                 SASL_SECURITY_LAYER, &ctx );
 422
 423         if ( rc != SASL_OK ) {
 424                 ld->ld_errno = sasl_err2ldap( rc );
 425                 return ld->ld_errno;
 426         }
 427
 428         Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: host=%s\n",
 429                 host, 0, 0 );
 430
 431         lc->lconn_sasl_ctx = ctx;
 432
 433         if( ssf ) {
 434                 sasl_external_properties_t extprops;
 435                 memset(&extprops, 0L, sizeof(extprops));
 436                 extprops.ssf = ssf;
 437
 438                 (void) sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 439                         (void *) &extprops );
 440
 441                 Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: ssf=%ld\n",
 442                         (long) ssf, 0, 0 );
 443         }
 444
 445         return LDAP_SUCCESS;
 446 }
 447
 448 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
 449 {
 450         sasl_conn_t *ctx = lc->lconn_sasl_ctx;
 451
 452         if( ctx != NULL ) {
 453                 sasl_dispose( &ctx );
 454                 lc->lconn_sasl_ctx = NULL;
 455         }
 456
 457         return LDAP_SUCCESS;
 458 }
 459
 460 int
 461 ldap_int_sasl_bind(
 462         LDAP                    *ld,
 463         const char              *dn,
 464         const char              *mechs,
 465         LDAPControl             **sctrls,
 466         LDAPControl             **cctrls,
 467         unsigned                flags,
 468         LDAP_SASL_INTERACT_PROC *interact,
 469         void * defaults )
 470 {
 471         char *data;
 472         const char *mech = NULL;
 473         const char *pmech = NULL;
 474         int                     saslrc, rc;
 475         sasl_ssf_t              *ssf = NULL;
 476         sasl_conn_t     *ctx;
 477         sasl_interact_t *prompts = NULL;
 478         unsigned credlen;
 479         struct berval ccred;
 480         ber_socket_t            sd;
 481
 482         Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_bind: %s\n",
 483                 mechs ? mechs : "<null>", 0, 0 );
 484
 485         /* do a quick !LDAPv3 check... ldap_sasl_bind will do the rest. */
 486         if (ld->ld_version < LDAP_VERSION3) {
 487                 ld->ld_errno = LDAP_NOT_SUPPORTED;
 488                 return ld->ld_errno;
 489         }
 490
 491         ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
 492
 493         if ( sd == AC_SOCKET_INVALID ) {
 494                 /* not connected yet */
 495                 int rc;
 496
 497                 rc = ldap_open_defconn( ld );
 498                 if( rc < 0 ) return ld->ld_errno;
 499
 500                 ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
 501
 502                 if( sd == AC_SOCKET_INVALID ) {
 503                         ld->ld_errno = LDAP_LOCAL_ERROR;
 504                         return ld->ld_errno;
 505                 }
 506         }
 507
 508         ctx = ld->ld_defconn->lconn_sasl_ctx;
 509
 510         if( ctx == NULL ) {
 511                 ld->ld_errno = LDAP_LOCAL_ERROR;
 512                 return ld->ld_errno;
 513         }
 514
 515         /* (re)set security properties */
 516         sasl_setprop( ctx, SASL_SEC_PROPS,
 517                 &ld->ld_options.ldo_sasl_secprops );
 518
 519         ccred.bv_val = NULL;
 520         ccred.bv_len = 0;
 521
 522         do {
 523                 saslrc = sasl_client_start( ctx,
 524                         mechs,
 525                         NULL,
 526                         &prompts,
 527                         &ccred.bv_val,
 528                         &credlen,
 529                         &mech );
 530
 531                 if( pmech == NULL && mech != NULL ) {
 532                         pmech = mech;
 533
 534                         if( flags != LDAP_SASL_QUIET ) {
 535                                 fprintf(stderr,
 536                                         "SASL/%s authentication started\n",
 537                                         pmech );
 538                         }
 539                 }
 540
 541                 if( saslrc == SASL_INTERACT ) {
 542                         int res;
 543                         if( !interact ) break;
 544                         res = (interact)( ld, flags, defaults, prompts );
 545                         if( res != LDAP_SUCCESS ) {
 546                                 break;
 547                         }
 548                 }
 549         } while ( saslrc == SASL_INTERACT );
 550
 551         ccred.bv_len = credlen;
 552
 553         if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
 554                 ld->ld_errno = sasl_err2ldap( saslrc );
 555                 return ld->ld_errno;
 556         }
 557
 558         do {
 559                 struct berval *scred;
 560                 unsigned credlen;
 561
 562                 scred = NULL;
 563
 564                 rc = ldap_sasl_bind_s( ld, dn, mech, &ccred, sctrls, cctrls, &scred );
 565
 566                 if ( ccred.bv_val != NULL ) {
 567                         LDAP_FREE( ccred.bv_val );
 568                         ccred.bv_val = NULL;
 569                 }
 570
 571                 if ( rc != LDAP_SUCCESS && rc != LDAP_SASL_BIND_IN_PROGRESS ) {
 572                         if( scred && scred->bv_len ) {
 573                                 /* and server provided us with data? */
 574                                 Debug( LDAP_DEBUG_TRACE,
 575                                         "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
 576                                         rc, saslrc, scred->bv_len );
 577                                 ber_bvfree( scred );
 578                         }
 579                         return ld->ld_errno;
 580                 }
 581
 582                 if( rc == LDAP_SUCCESS && saslrc == SASL_OK ) {
 583                         /* we're done, no need to step */
 584                         if( scred && scred->bv_len ) {
 585                                 /* but server provided us with data! */
 586                                 Debug( LDAP_DEBUG_TRACE,
 587                                         "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
 588                                         rc, saslrc, scred->bv_len );
 589                                 ber_bvfree( scred );
 590                                 return ld->ld_errno = LDAP_LOCAL_ERROR;
 591                         }
 592                         break;
 593                 }
 594
 595                 do {
 596                         saslrc = sasl_client_step( ctx,
 597                                 (scred == NULL) ? NULL : scred->bv_val,
 598                                 (scred == NULL) ? 0 : scred->bv_len,
 599                                 &prompts,
 600                                 &ccred.bv_val,
 601                                 &credlen );
 602
 603                         Debug( LDAP_DEBUG_TRACE, "sasl_client_start: %d\n",
 604                                 saslrc, 0, 0 );
 605
 606                         if( saslrc == SASL_INTERACT ) {
 607                                 int res;
 608                                 if( !interact ) break;
 609                                 res = (interact)( ld, flags, defaults, prompts );
 610                                 if( res != LDAP_SUCCESS ) {
 611                                         break;
 612                                 }
 613                         }
 614                 } while ( saslrc == SASL_INTERACT );
 615
 616                 ccred.bv_len = credlen;
 617                 ber_bvfree( scred );
 618
 619                 if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
 620                         ld->ld_errno = sasl_err2ldap( saslrc );
 621                         return ld->ld_errno;
 622                 }
 623         } while ( rc == LDAP_SASL_BIND_IN_PROGRESS );
 624
 625         if ( rc != LDAP_SUCCESS ) {
 626                 return rc;
 627         }
 628
 629         if ( saslrc != SASL_OK ) {
 630                 return ld->ld_errno = sasl_err2ldap( saslrc );
 631         }
 632
 633         if( flags != LDAP_SASL_QUIET ) {
 634                 saslrc = sasl_getprop( ctx, SASL_USERNAME, (void **) &data );
 635                 if( saslrc == SASL_OK && data && *data ) {
 636                         fprintf( stderr, "SASL username: %s\n", data );
 637                 }
 638
 639                 saslrc = sasl_getprop( ctx, SASL_REALM, (void **) &data );
 640                 if( saslrc == SASL_OK && data && *data ) {
 641                         fprintf( stderr, "SASL realm: %s\n", data );
 642                 }
 643         }
 644
 645         saslrc = sasl_getprop( ctx, SASL_SSF, (void **) &ssf );
 646         if( saslrc == SASL_OK ) {
 647                 if( flags != LDAP_SASL_QUIET ) {
 648                         fprintf( stderr, "SASL SSF: %lu\n",
 649                                 (unsigned long) *ssf );
 650                 }
 651
 652                 if( ssf && *ssf ) {
 653                         if( flags != LDAP_SASL_QUIET ) {
 654                                 fprintf( stderr, "SASL installing layers\n" );
 655                         }
 656                         ldap_pvt_sasl_install( ld->ld_conns->lconn_sb, ctx );
 657                 }
 658         }
 659
 660         return rc;
 661 }
 662
 663 int
 664 ldap_int_sasl_external(
 665         LDAP *ld,
 666         LDAPConn *conn,
 667         const char * authid,
 668         ber_len_t ssf )
 669 {
 670         int sc;
 671         sasl_conn_t *ctx;
 672         sasl_external_properties_t extprops;
 673
 674         ctx = conn->lconn_sasl_ctx;
 675
 676         if ( ctx == NULL ) {
 677                 return LDAP_LOCAL_ERROR;
 678         }
 679
 680         memset( &extprops, '\0', sizeof(extprops) );
 681         extprops.ssf = ssf;
 682         extprops.auth_id = (char *) authid;
 683
 684         sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 685                 (void *) &extprops );
 686
 687         if ( sc != SASL_OK ) {
 688                 return LDAP_LOCAL_ERROR;
 689         }
 690
 691         return LDAP_SUCCESS;
 692 }
 693
 694
 695 int ldap_pvt_sasl_secprops(
 696         const char *in,
 697         sasl_security_properties_t *secprops )
 698 {
 699         int i;
 700         char **props = ldap_str2charray( in, "," );
 701         unsigned sflags = 0;
 702         int got_sflags = 0;
 703         sasl_ssf_t max_ssf = 0;
 704         int got_max_ssf = 0;
 705         sasl_ssf_t min_ssf = 0;
 706         int got_min_ssf = 0;
 707         unsigned maxbufsize = 0;
 708         int got_maxbufsize = 0;
 709
 710         if( props == NULL || secprops == NULL ) {
 711                 return LDAP_PARAM_ERROR;
 712         }
 713
 714         for( i=0; props[i]; i++ ) {
 715                 if( !strcasecmp(props[i], "none") ) {
 716                         got_sflags++;
 717
 718                 } else if( !strcasecmp(props[i], "noplain") ) {
 719                         got_sflags++;
 720                         sflags |= SASL_SEC_NOPLAINTEXT;
 721
 722                 } else if( !strcasecmp(props[i], "noactive") ) {
 723                         got_sflags++;
 724                         sflags |= SASL_SEC_NOACTIVE;
 725
 726                 } else if( !strcasecmp(props[i], "nodict") ) {
 727                         got_sflags++;
 728                         sflags |= SASL_SEC_NODICTIONARY;
 729
 730                 } else if( !strcasecmp(props[i], "forwardsec") ) {
 731                         got_sflags++;
 732                         sflags |= SASL_SEC_FORWARD_SECRECY;
 733
 734                 } else if( !strcasecmp(props[i], "noanonymous")) {
 735                         got_sflags++;
 736                         sflags |= SASL_SEC_NOANONYMOUS;
 737
 738                 } else if( !strcasecmp(props[i], "passcred") ) {
 739                         got_sflags++;
 740                         sflags |= SASL_SEC_PASS_CREDENTIALS;
 741
 742                 } else if( !strncasecmp(props[i],
 743                         "minssf=", sizeof("minssf")) )
 744                 {
 745                         if( isdigit( props[i][sizeof("minssf")] ) ) {
 746                                 got_min_ssf++;
 747                                 min_ssf = atoi( &props[i][sizeof("minssf")] );
 748                         } else {
 749                                 return LDAP_NOT_SUPPORTED;
 750                         }
 751
 752                 } else if( !strncasecmp(props[i],
 753                         "maxssf=", sizeof("maxssf")) )
 754                 {
 755                         if( isdigit( props[i][sizeof("maxssf")] ) ) {
 756                                 got_max_ssf++;
 757                                 max_ssf = atoi( &props[i][sizeof("maxssf")] );
 758                         } else {
 759                                 return LDAP_NOT_SUPPORTED;
 760                         }
 761
 762                 } else if( !strncasecmp(props[i],
 763                         "maxbufsize=", sizeof("maxbufsize")) )
 764                 {
 765                         if( isdigit( props[i][sizeof("maxbufsize")] ) ) {
 766                                 got_maxbufsize++;
 767                                 maxbufsize = atoi( &props[i][sizeof("maxbufsize")] );
 768                         } else {
 769                                 return LDAP_NOT_SUPPORTED;
 770                         }
 771
 772                         if( maxbufsize && (( maxbufsize < SASL_MIN_BUFF_SIZE )
 773                                 || (maxbufsize > SASL_MAX_BUFF_SIZE )))
 774                         {
 775                                 /* bad maxbufsize */
 776                                 return LDAP_PARAM_ERROR;
 777                         }
 778
 779                 } else {
 780                         return LDAP_NOT_SUPPORTED;
 781                 }
 782         }
 783
 784         if(got_sflags) {
 785                 secprops->security_flags = sflags;
 786         }
 787         if(got_min_ssf) {
 788                 secprops->min_ssf = min_ssf;
 789         }
 790         if(got_max_ssf) {
 791                 secprops->max_ssf = max_ssf;
 792         }
 793         if(got_maxbufsize) {
 794                 secprops->maxbufsize = maxbufsize;
 795         }
 796
 797         ldap_charray_free( props );
 798         return LDAP_SUCCESS;
 799 }
 800
 801 int
 802 ldap_int_sasl_config( struct ldapoptions *lo, int option, const char *arg )
 803 {
 804         int rc;
 805
 806         switch( option ) {
 807         case LDAP_OPT_X_SASL_SECPROPS:
 808                 rc = ldap_pvt_sasl_secprops( arg, &lo->ldo_sasl_secprops );
 809                 if( rc == LDAP_SUCCESS ) return 0;
 810         }
 811
 812         return -1;
 813 }
 814
 815 int
 816 ldap_int_sasl_get_option( LDAP *ld, int option, void *arg )
 817 {
 818         if ( ld == NULL )
 819                 return -1;
 820
 821         switch ( option ) {
 822                 case LDAP_OPT_X_SASL_MECH: {
 823                         *(char **)arg = ld->ld_options.ldo_def_sasl_mech
 824                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_mech ) : NULL;
 825                 } break;
 826                 case LDAP_OPT_X_SASL_REALM: {
 827                         *(char **)arg = ld->ld_options.ldo_def_sasl_realm
 828                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_realm ) : NULL;
 829                 } break;
 830                 case LDAP_OPT_X_SASL_AUTHCID: {
 831                         *(char **)arg = ld->ld_options.ldo_def_sasl_authcid
 832                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authcid ) : NULL;
 833                 } break;
 834                 case LDAP_OPT_X_SASL_AUTHZID: {
 835                         *(char **)arg = ld->ld_options.ldo_def_sasl_authzid
 836                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authzid ) : NULL;
 837                 } break;
 838
 839                 case LDAP_OPT_X_SASL_SSF: {
 840                         int sc;
 841                         sasl_ssf_t      *ssf;
 842                         sasl_conn_t *ctx;
 843
 844                         if( ld->ld_defconn == NULL ) {
 845                                 return -1;
 846                         }
 847
 848                         ctx = ld->ld_defconn->lconn_sasl_ctx;
 849
 850                         if ( ctx == NULL ) {
 851                                 return -1;
 852                         }
 853
 854                         sc = sasl_getprop( ctx, SASL_SSF,
 855                                 (void **) &ssf );
 856
 857                         if ( sc != SASL_OK ) {
 858                                 return -1;
 859                         }
 860
 861                         *(ber_len_t *)arg = *ssf;
 862                 } break;
 863
 864                 case LDAP_OPT_X_SASL_SSF_EXTERNAL:
 865                         /* this option is write only */
 866                         return -1;
 867
 868                 case LDAP_OPT_X_SASL_SSF_MIN:
 869                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.min_ssf;
 870                         break;
 871                 case LDAP_OPT_X_SASL_SSF_MAX:
 872                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.max_ssf;
 873                         break;
 874                 case LDAP_OPT_X_SASL_MAXBUFSIZE:
 875                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.maxbufsize;
 876                         break;
 877
 878                 case LDAP_OPT_X_SASL_SECPROPS:
 879                         /* this option is write only */
 880                         return -1;
 881
 882                 default:
 883                         return -1;
 884         }
 885         return 0;
 886 }
 887
 888 int
 889 ldap_int_sasl_set_option( LDAP *ld, int option, void *arg )
 890 {
 891         if ( ld == NULL )
 892                 return -1;
 893
 894         switch ( option ) {
 895         case LDAP_OPT_X_SASL_SSF:
 896                 /* This option is read-only */
 897                 return -1;
 898
 899         case LDAP_OPT_X_SASL_SSF_EXTERNAL: {
 900                 int sc;
 901                 sasl_external_properties_t extprops;
 902                 sasl_conn_t *ctx;
 903
 904                 if( ld->ld_defconn == NULL ) {
 905                         return -1;
 906                 }
 907
 908                 ctx = ld->ld_defconn->lconn_sasl_ctx;
 909
 910                 if ( ctx == NULL ) {
 911                         return -1;
 912                 }
 913
 914                 memset(&extprops, 0L, sizeof(extprops));
 915
 916                 extprops.ssf = * (ber_len_t *) arg;
 917
 918                 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 919                         (void *) &extprops );
 920
 921                 if ( sc != SASL_OK ) {
 922                         return -1;
 923                 }
 924                 } break;
 925
 926         case LDAP_OPT_X_SASL_SSF_MIN:
 927                 ld->ld_options.ldo_sasl_secprops.min_ssf = *(ber_len_t *)arg;
 928                 break;
 929         case LDAP_OPT_X_SASL_SSF_MAX:
 930                 ld->ld_options.ldo_sasl_secprops.max_ssf = *(ber_len_t *)arg;
 931                 break;
 932         case LDAP_OPT_X_SASL_MAXBUFSIZE:
 933                 ld->ld_options.ldo_sasl_secprops.maxbufsize = *(ber_len_t *)arg;
 934                 break;
 935
 936         case LDAP_OPT_X_SASL_SECPROPS: {
 937                 int sc;
 938                 sc = ldap_pvt_sasl_secprops( (char *) arg,
 939                         &ld->ld_options.ldo_sasl_secprops );
 940
 941                 return sc == LDAP_SUCCESS ? 0 : -1;
 942                 }
 943
 944         default:
 945                 return -1;
 946         }
 947         return 0;
 948 }
 949
 950 #ifdef LDAP_R_COMPILE
 951 void *ldap_pvt_sasl_mutex_new(void)
 952 {
 953         ldap_pvt_thread_mutex_t *mutex;
 954
 955         mutex = (ldap_pvt_thread_mutex_t *) LDAP_MALLOC(
 956                 sizeof(ldap_pvt_thread_mutex_t) );
 957
 958         if ( ldap_pvt_thread_mutex_init( mutex ) == 0 ) {
 959                 return mutex;
 960         }
 961         return NULL;
 962 }
 963
 964 int ldap_pvt_sasl_mutex_lock(void *mutex)
 965 {
 966         return ldap_pvt_thread_mutex_lock( (ldap_pvt_thread_mutex_t *)mutex )
 967                 ? SASL_FAIL : SASL_OK;
 968 }
 969
 970 int ldap_pvt_sasl_mutex_unlock(void *mutex)
 971 {
 972         return ldap_pvt_thread_mutex_unlock( (ldap_pvt_thread_mutex_t *)mutex )
 973                 ? SASL_FAIL : SASL_OK;
 974 }
 975
 976 void ldap_pvt_sasl_mutex_dispose(void *mutex)
 977 {
 978         (void) ldap_pvt_thread_mutex_destroy( (ldap_pvt_thread_mutex_t *)mutex );
 979         LDAP_FREE( mutex );
 980 }
 981 #endif
 982
 983 #else
 984 int ldap_int_sasl_init( void )
 985 { return LDAP_SUCCESS; }
 986
 987 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
 988 { return LDAP_SUCCESS; }
 989
 990 int
 991 ldap_int_sasl_bind(
 992         LDAP                    *ld,
 993         const char              *dn,
 994         const char              *mechs,
 995         LDAPControl             **sctrls,
 996         LDAPControl             **cctrls,
 997         unsigned                flags,
 998         LDAP_SASL_INTERACT_PROC *interact,
 999         void * defaults )
1000 { return LDAP_NOT_SUPPORTED; }
1001
1002 int
1003 ldap_int_sasl_external(
1004         LDAP *ld,
1005         LDAPConn *conn,
1006         const char * authid,
1007         ber_len_t ssf )
1008 { return LDAP_SUCCESS; }
1009
1010 #endif /* HAVE_CYRUS_SASL */