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 #ifdef LDAP_R_COMPILE
  20 #include "ldap_pvt_thread.h"
  21 #endif
  22
  23 #ifdef HAVE_CYRUS_SASL
  24 #include <sasl.h>
  25
  26 /*
  27 * Various Cyrus SASL related stuff.
  28 */
  29
  30 #define SASL_MAX_BUFF_SIZE      65536
  31 #define SASL_MIN_BUFF_SIZE      4096
  32
  33 int ldap_int_sasl_init( void )
  34 {
  35         /* XXX not threadsafe */
  36         static int sasl_initialized = 0;
  37
  38         static sasl_callback_t client_callbacks[] = {
  39 #ifdef SASL_CB_GETREALM
  40                 { SASL_CB_GETREALM, NULL, NULL },
  41 #endif
  42                 { SASL_CB_USER, NULL, NULL },
  43                 { SASL_CB_AUTHNAME, NULL, NULL },
  44                 { SASL_CB_PASS, NULL, NULL },
  45                 { SASL_CB_ECHOPROMPT, NULL, NULL },
  46                 { SASL_CB_NOECHOPROMPT, NULL, NULL },
  47                 { SASL_CB_LIST_END, NULL, NULL }
  48         };
  49
  50         if ( sasl_initialized ) {
  51                 return 0;
  52         }
  53
  54 #ifndef CSRIMALLOC
  55         sasl_set_alloc(
  56                 ber_memalloc,
  57                 ber_memcalloc,
  58                 ber_memrealloc,
  59                 ber_memfree );
  60 #endif /* CSRIMALLOC */
  61
  62 #ifdef LDAP_R_COMPILE
  63         sasl_set_mutex(
  64                 ldap_pvt_sasl_mutex_new,
  65                 ldap_pvt_sasl_mutex_lock,
  66                 ldap_pvt_sasl_mutex_unlock,
  67                 ldap_pvt_sasl_mutex_dispose );
  68 #endif
  69
  70         if ( sasl_client_init( client_callbacks ) == SASL_OK ) {
  71                 sasl_initialized = 1;
  72                 return 0;
  73         }
  74
  75         return -1;
  76 }
  77
  78 /*
  79  * SASL encryption support for LBER Sockbufs
  80  */
  81
  82 struct sb_sasl_data {
  83         sasl_conn_t             *sasl_context;
  84         Sockbuf_Buf             sec_buf_in;
  85         Sockbuf_Buf             buf_in;
  86         Sockbuf_Buf             buf_out;
  87 };
  88
  89 static int
  90 sb_sasl_setup( Sockbuf_IO_Desc *sbiod, void *arg )
  91 {
  92         struct sb_sasl_data     *p;
  93
  94         assert( sbiod != NULL );
  95
  96         p = LBER_MALLOC( sizeof( *p ) );
  97         if ( p == NULL )
  98                 return -1;
  99         p->sasl_context = (sasl_conn_t *)arg;
 100         ber_pvt_sb_buf_init( &p->sec_buf_in );
 101         ber_pvt_sb_buf_init( &p->buf_in );
 102         ber_pvt_sb_buf_init( &p->buf_out );
 103         if ( ber_pvt_sb_grow_buffer( &p->sec_buf_in, SASL_MIN_BUFF_SIZE ) < 0 ) {
 104                 errno = ENOMEM;
 105                 return -1;
 106         }
 107
 108         sbiod->sbiod_pvt = p;
 109
 110         return 0;
 111 }
 112
 113 static int
 114 sb_sasl_remove( Sockbuf_IO_Desc *sbiod )
 115 {
 116         struct sb_sasl_data     *p;
 117
 118         assert( sbiod != NULL );
 119
 120         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 121         ber_pvt_sb_buf_destroy( &p->sec_buf_in );
 122         ber_pvt_sb_buf_destroy( &p->buf_in );
 123         ber_pvt_sb_buf_destroy( &p->buf_out );
 124         LBER_FREE( p );
 125         sbiod->sbiod_pvt = NULL;
 126         return 0;
 127 }
 128
 129 static ber_len_t
 130 sb_sasl_pkt_length( const char *buf, int debuglevel )
 131 {
 132         ber_len_t               size;
 133         long                    tmp;
 134
 135         assert( buf != NULL );
 136
 137         tmp = *((long *)buf);
 138         size = ntohl( tmp );
 139
 140         if ( size > SASL_MAX_BUFF_SIZE ) {
 141                 /* somebody is trying to mess me up. */
 142                 ber_log_printf( LDAP_DEBUG_ANY, debuglevel,
 143                         "sb_sasl_pkt_length: received illegal packet length "
 144                         "of %lu bytes\n", (unsigned long)size );
 145                 size = 16; /* this should lead to an error. */
 146 }
 147
 148         return size + 4; /* include the size !!! */
 149 }
 150
 151 /* Drop a processed packet from the input buffer */
 152 static void
 153 sb_sasl_drop_packet ( Sockbuf_Buf *sec_buf_in, int debuglevel )
 154 {
 155         ber_slen_t                      len;
 156
 157         len = sec_buf_in->buf_ptr - sec_buf_in->buf_end;
 158         if ( len > 0 )
 159                 memmove( sec_buf_in->buf_base, sec_buf_in->buf_base +
 160                         sec_buf_in->buf_end, len );
 161
 162         if ( len >= 4 ) {
 163                 sec_buf_in->buf_end = sb_sasl_pkt_length( sec_buf_in->buf_base,
 164                         debuglevel);
 165         }
 166         else {
 167                 sec_buf_in->buf_end = 0;
 168         }
 169         sec_buf_in->buf_ptr = len;
 170 }
 171
 172 static ber_slen_t
 173 sb_sasl_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
 174 {
 175         struct sb_sasl_data     *p;
 176         ber_slen_t              ret, bufptr;
 177
 178         assert( sbiod != NULL );
 179         assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
 180
 181         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 182
 183         /* Are there anything left in the buffer? */
 184         ret = ber_pvt_sb_copy_out( &p->buf_in, buf, len );
 185         bufptr = ret;
 186         len -= ret;
 187
 188         if ( len == 0 )
 189                 return bufptr;
 190
 191         ber_pvt_sb_buf_destroy( &p->buf_in );
 192
 193         /* Read the length of the packet */
 194         while ( p->sec_buf_in.buf_ptr < 4 ) {
 195                 ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base,
 196                         4 - p->sec_buf_in.buf_ptr );
 197 #ifdef EINTR
 198                 if ( ( ret < 0 ) && ( errno == EINTR ) )
 199                         continue;
 200 #endif
 201                 if ( ret <= 0 )
 202                         return ret;
 203
 204                 p->sec_buf_in.buf_ptr += ret;
 205         }
 206
 207         /* The new packet always starts at p->sec_buf_in.buf_base */
 208         ret = sb_sasl_pkt_length( p->sec_buf_in.buf_base,
 209                 sbiod->sbiod_sb->sb_debug );
 210
 211         /* Grow the packet buffer if neccessary */
 212         if ( ( p->sec_buf_in.buf_size < ret ) &&
 213                 ber_pvt_sb_grow_buffer( &p->sec_buf_in, ret ) < 0 )
 214         {
 215                 errno = ENOMEM;
 216                 return -1;
 217         }
 218         p->sec_buf_in.buf_end = ret;
 219
 220         /* Did we read the whole encrypted packet? */
 221         while ( p->sec_buf_in.buf_ptr < p->sec_buf_in.buf_end ) {
 222                 /* No, we have got only a part of it */
 223                 ret = p->sec_buf_in.buf_end - p->sec_buf_in.buf_ptr;
 224
 225                 ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base +
 226                         p->sec_buf_in.buf_ptr, ret );
 227 #ifdef EINTR
 228                 if ( ( ret < 0 ) && ( errno == EINTR ) )
 229                         continue;
 230 #endif
 231                 if ( ret <= 0 )
 232                         return ret;
 233
 234                 p->sec_buf_in.buf_ptr += ret;
 235         }
 236
 237         /* Decode the packet */
 238         ret = sasl_decode( p->sasl_context, p->sec_buf_in.buf_base,
 239                 p->sec_buf_in.buf_end, &p->buf_in.buf_base,
 240                 (unsigned *)&p->buf_in.buf_end );
 241         if ( ret != SASL_OK ) {
 242                 ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
 243                         "sb_sasl_read: failed to decode packet: %s\n",
 244                         sasl_errstring( ret, NULL, NULL ) );
 245                 sb_sasl_drop_packet( &p->sec_buf_in,
 246                         sbiod->sbiod_sb->sb_debug );
 247                 errno = EIO;
 248                 return -1;
 249         }
 250
 251         /* Drop the packet from the input buffer */
 252         sb_sasl_drop_packet( &p->sec_buf_in, sbiod->sbiod_sb->sb_debug );
 253
 254         p->buf_in.buf_size = p->buf_in.buf_end;
 255
 256         bufptr += ber_pvt_sb_copy_out( &p->buf_in, (char*) buf + bufptr, len );
 257
 258         return bufptr;
 259 }
 260
 261 static ber_slen_t
 262 sb_sasl_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
 263 {
 264         struct sb_sasl_data     *p;
 265         int                     ret;
 266
 267         assert( sbiod != NULL );
 268         assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
 269
 270         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 271
 272         /* Are there anything left in the buffer? */
 273         if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) {
 274                 ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
 275                 if ( ret <= 0 )
 276                         return ret;
 277         }
 278
 279         /* now encode the next packet. */
 280         ber_pvt_sb_buf_destroy( &p->buf_out );
 281         ret = sasl_encode( p->sasl_context, buf, len, &p->buf_out.buf_base,
 282                 (unsigned *)&p->buf_out.buf_size );
 283         if ( ret != SASL_OK ) {
 284                 ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
 285                         "sb_sasl_write: failed to encode packet: %s\n",
 286                         sasl_errstring( ret, NULL, NULL ) );
 287                 return -1;
 288         }
 289         p->buf_out.buf_end = p->buf_out.buf_size;
 290
 291         ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
 292         if ( ret <= 0 )
 293                 return ret;
 294         return len;
 295 }
 296
 297 static int
 298 sb_sasl_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
 299 {
 300         struct sb_sasl_data     *p;
 301
 302         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 303
 304         if ( opt == LBER_SB_OPT_DATA_READY ) {
 305                 if ( p->buf_in.buf_ptr != p->buf_in.buf_end )
 306                         return 1;
 307         }
 308
 309         return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
 310 }
 311
 312 Sockbuf_IO ldap_pvt_sockbuf_io_sasl = {
 313         sb_sasl_setup,          /* sbi_setup */
 314         sb_sasl_remove,         /* sbi_remove */
 315         sb_sasl_ctrl,           /* sbi_ctrl */
 316         sb_sasl_read,           /* sbi_read */
 317         sb_sasl_write,          /* sbi_write */
 318         NULL                    /* sbi_close */
 319 };
 320
 321 int ldap_pvt_sasl_install( Sockbuf *sb, void *ctx_arg )
 322 {
 323         Debug( LDAP_DEBUG_TRACE, "ldap_pvt_sasl_install\n",
 324                 0, 0, 0 );
 325
 326         /* don't install the stuff unless security has been negotiated */
 327
 328         if ( !ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO,
 329                         &ldap_pvt_sockbuf_io_sasl ) )
 330                 ber_sockbuf_add_io( sb, &ldap_pvt_sockbuf_io_sasl,
 331                         LBER_SBIOD_LEVEL_APPLICATION, ctx_arg );
 332
 333         return LDAP_SUCCESS;
 334 }
 335
 336 static int
 337 sasl_err2ldap( int saslerr )
 338 {
 339         int rc;
 340
 341         switch (saslerr) {
 342                 case SASL_CONTINUE:
 343                         rc = LDAP_MORE_RESULTS_TO_RETURN;
 344                         break;
 345                 case SASL_INTERACT:
 346                         rc = LDAP_LOCAL_ERROR;
 347                         break;
 348                 case SASL_OK:
 349                         rc = LDAP_SUCCESS;
 350                         break;
 351                 case SASL_FAIL:
 352                         rc = LDAP_LOCAL_ERROR;
 353                         break;
 354                 case SASL_NOMEM:
 355                         rc = LDAP_NO_MEMORY;
 356                         break;
 357                 case SASL_NOMECH:
 358                         rc = LDAP_AUTH_UNKNOWN;
 359                         break;
 360                 case SASL_BADAUTH:
 361                         rc = LDAP_AUTH_UNKNOWN;
 362                         break;
 363                 case SASL_NOAUTHZ:
 364                         rc = LDAP_PARAM_ERROR;
 365                         break;
 366                 case SASL_TOOWEAK:
 367                 case SASL_ENCRYPT:
 368                         rc = LDAP_AUTH_UNKNOWN;
 369                         break;
 370                 default:
 371                         rc = LDAP_LOCAL_ERROR;
 372                         break;
 373         }
 374
 375         assert( rc == LDAP_SUCCESS || LDAP_API_ERROR( rc ) );
 376         return rc;
 377 }
 378
 379 int
 380 ldap_int_sasl_open(
 381         LDAP *ld,
 382         LDAPConn *lc,
 383         const char * host,
 384         ber_len_t ssf )
 385 {
 386         int rc;
 387         sasl_conn_t *ctx;
 388
 389         sasl_callback_t *session_callbacks =
 390                 ber_memcalloc( 2, sizeof( sasl_callback_t ) );
 391
 392         if( session_callbacks == NULL ) return LDAP_NO_MEMORY;
 393
 394         session_callbacks[0].id = SASL_CB_USER;
 395         session_callbacks[0].proc = NULL;
 396         session_callbacks[0].context = ld;
 397
 398         session_callbacks[1].id = SASL_CB_LIST_END;
 399         session_callbacks[1].proc = NULL;
 400         session_callbacks[1].context = NULL;
 401
 402         assert( lc->lconn_sasl_ctx == NULL );
 403
 404         if ( host == NULL ) {
 405                 ld->ld_errno = LDAP_UNAVAILABLE;
 406                 return ld->ld_errno;
 407         }
 408
 409         rc = sasl_client_new( "ldap", host, session_callbacks,
 410                 SASL_SECURITY_LAYER, &ctx );
 411
 412         if ( rc != SASL_OK ) {
 413                 ld->ld_errno = sasl_err2ldap( rc );
 414                 return ld->ld_errno;
 415         }
 416
 417         Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: %s\n",
 418                 host, 0, 0 );
 419
 420         lc->lconn_sasl_ctx = ctx;
 421
 422         if( ssf ) {
 423                 sasl_external_properties_t extprops;
 424                 memset(&extprops, 0L, sizeof(extprops));
 425                 extprops.ssf = ssf;
 426
 427                 (void) sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 428                         (void *) &extprops );
 429
 430                 Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: ssf=%ld\n",
 431                         (long) ssf, 0, 0 );
 432         }
 433
 434         return LDAP_SUCCESS;
 435 }
 436
 437 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
 438 {
 439         sasl_conn_t *ctx = lc->lconn_sasl_ctx;
 440         assert( ctx != NULL );
 441
 442         if( ctx ) {
 443                 sasl_dispose( &ctx );
 444                 lc->lconn_sasl_ctx = NULL;
 445         }
 446
 447         return LDAP_SUCCESS;
 448 }
 449
 450 int
 451 ldap_int_sasl_bind(
 452         LDAP                    *ld,
 453         const char              *dn,
 454         const char              *mechs,
 455         LDAPControl             **sctrls,
 456         LDAPControl             **cctrls,
 457         unsigned                flags,
 458         LDAP_SASL_INTERACT_PROC *interact,
 459         void * defaults )
 460 {
 461         char *data;
 462         const char *mech = NULL;
 463         const char *pmech = NULL;
 464         int                     saslrc, rc;
 465         sasl_ssf_t              *ssf = NULL;
 466         sasl_conn_t     *ctx;
 467         sasl_interact_t *prompts = NULL;
 468         unsigned credlen;
 469         struct berval ccred;
 470         ber_socket_t            sd;
 471
 472         Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_bind: %s\n",
 473                 mechs ? mechs : "<null>", 0, 0 );
 474
 475         /* do a quick !LDAPv3 check... ldap_sasl_bind will do the rest. */
 476         if (ld->ld_version < LDAP_VERSION3) {
 477                 ld->ld_errno = LDAP_NOT_SUPPORTED;
 478                 return ld->ld_errno;
 479         }
 480
 481         ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
 482
 483         if ( sd == AC_SOCKET_INVALID ) {
 484                 /* not connected yet */
 485                 int rc = ldap_open_defconn( ld );
 486
 487                 if( rc < 0 ) return ld->ld_errno;
 488                 ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
 489
 490                 if( sd == AC_SOCKET_INVALID ) {
 491                         ld->ld_errno = LDAP_UNAVAILABLE;
 492                         return ld->ld_errno;
 493                 }
 494         }
 495
 496         ctx = ld->ld_defconn->lconn_sasl_ctx;
 497
 498         if( ctx == NULL ) {
 499                 ld->ld_errno = LDAP_UNAVAILABLE;
 500                 return ld->ld_errno;
 501         }
 502
 503         /* (re)set security properties */
 504         sasl_setprop( ctx, SASL_SEC_PROPS,
 505                 &ld->ld_options.ldo_sasl_secprops );
 506
 507         ccred.bv_val = NULL;
 508         ccred.bv_len = 0;
 509
 510         do {
 511                 saslrc = sasl_client_start( ctx,
 512                         mechs,
 513                         NULL,
 514                         &prompts,
 515                         &ccred.bv_val,
 516                         &credlen,
 517                         &mech );
 518
 519                 if( pmech == NULL && mech != NULL ) {
 520                         pmech = mech;
 521
 522                         if( flags != LDAP_SASL_QUIET ) {
 523                                 fprintf(stderr,
 524                                         "SASL/%s authentication started\n",
 525                                         pmech );
 526                         }
 527                 }
 528
 529                 if( saslrc == SASL_INTERACT ) {
 530                         int res;
 531                         if( !interact ) break;
 532                         res = (interact)( ld, flags, defaults, prompts );
 533                         if( res != LDAP_SUCCESS ) {
 534                                 break;
 535                         }
 536                 }
 537         } while ( saslrc == SASL_INTERACT );
 538
 539         ccred.bv_len = credlen;
 540
 541         if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
 542                 ld->ld_errno = sasl_err2ldap( saslrc );
 543                 return ld->ld_errno;
 544         }
 545
 546         do {
 547                 struct berval *scred;
 548                 unsigned credlen;
 549
 550                 scred = NULL;
 551
 552                 rc = ldap_sasl_bind_s( ld, dn, mech, &ccred, sctrls, cctrls, &scred );
 553
 554                 if ( ccred.bv_val != NULL ) {
 555                         LDAP_FREE( ccred.bv_val );
 556                         ccred.bv_val = NULL;
 557                 }
 558
 559                 if ( rc != LDAP_SUCCESS && rc != LDAP_SASL_BIND_IN_PROGRESS ) {
 560                         if( scred ) {
 561                                 /* and server provided us with data? */
 562                                 Debug( LDAP_DEBUG_TRACE,
 563                                         "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
 564                                         rc, saslrc, scred->bv_len );
 565                                 ber_bvfree( scred );
 566                         }
 567                         return ld->ld_errno;
 568                 }
 569
 570                 if( rc == LDAP_SUCCESS && saslrc == SASL_OK ) {
 571                         /* we're done, no need to step */
 572                         if( scred ) {
 573                                 /* but 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                                 return ld->ld_errno = LDAP_LOCAL_ERROR;
 579                         }
 580                         break;
 581                 }
 582
 583                 do {
 584                         saslrc = sasl_client_step( ctx,
 585                                 (scred == NULL) ? NULL : scred->bv_val,
 586                                 (scred == NULL) ? 0 : scred->bv_len,
 587                                 &prompts,
 588                                 &ccred.bv_val,
 589                                 &credlen );
 590
 591                         Debug( LDAP_DEBUG_TRACE, "sasl_client_start: %d\n",
 592                                 saslrc, 0, 0 );
 593
 594                         if( saslrc == SASL_INTERACT ) {
 595                                 int res;
 596                                 if( !interact ) break;
 597                                 res = (interact)( ld, flags, defaults, prompts );
 598                                 if( res != LDAP_SUCCESS ) {
 599                                         break;
 600                                 }
 601                         }
 602                 } while ( saslrc == SASL_INTERACT );
 603
 604                 ccred.bv_len = credlen;
 605                 ber_bvfree( scred );
 606
 607                 if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
 608                         ld->ld_errno = sasl_err2ldap( saslrc );
 609                         return ld->ld_errno;
 610                 }
 611         } while ( rc == LDAP_SASL_BIND_IN_PROGRESS );
 612
 613         if ( rc != LDAP_SUCCESS ) {
 614                 return rc;
 615         }
 616
 617         if ( saslrc != SASL_OK ) {
 618                 return ld->ld_errno = sasl_err2ldap( saslrc );
 619         }
 620
 621         if( flags != LDAP_SASL_QUIET ) {
 622                 saslrc = sasl_getprop( ctx, SASL_USERNAME, (void **) &data );
 623                 if( saslrc == SASL_OK && data && *data ) {
 624                         fprintf( stderr, "SASL username: %s\n", data );
 625                 }
 626
 627                 saslrc = sasl_getprop( ctx, SASL_REALM, (void **) &data );
 628                 if( saslrc == SASL_OK && data && *data ) {
 629                         fprintf( stderr, "SASL realm: %s\n", data );
 630                 }
 631         }
 632
 633         saslrc = sasl_getprop( ctx, SASL_SSF, (void **) &ssf );
 634         if( saslrc == SASL_OK ) {
 635                 if( flags != LDAP_SASL_QUIET ) {
 636                         fprintf( stderr, "SASL SSF: %lu\n",
 637                                 (unsigned long) *ssf );
 638                 }
 639
 640                 if( ssf && *ssf ) {
 641                         if( flags != LDAP_SASL_QUIET ) {
 642                                 fprintf( stderr, "SASL installing layers\n" );
 643                         }
 644                         ldap_pvt_sasl_install( ld->ld_sb, ctx );
 645                 }
 646         }
 647
 648         return rc;
 649 }
 650
 651 int ldap_pvt_sasl_secprops(
 652         const char *in,
 653         sasl_security_properties_t *secprops )
 654 {
 655         int i;
 656         char **props = ldap_str2charray( in, "," );
 657         unsigned sflags = 0;
 658         int got_sflags = 0;
 659         sasl_ssf_t max_ssf = 0;
 660         int got_max_ssf = 0;
 661         sasl_ssf_t min_ssf = 0;
 662         int got_min_ssf = 0;
 663         unsigned maxbufsize = 0;
 664         int got_maxbufsize = 0;
 665
 666         if( props == NULL || secprops == NULL ) {
 667                 return LDAP_PARAM_ERROR;
 668         }
 669
 670         for( i=0; props[i]; i++ ) {
 671                 if( !strcasecmp(props[i], "none") ) {
 672                         got_sflags++;
 673
 674                 } else if( !strcasecmp(props[i], "noplain") ) {
 675                         got_sflags++;
 676                         sflags |= SASL_SEC_NOPLAINTEXT;
 677
 678                 } else if( !strcasecmp(props[i], "noactive") ) {
 679                         got_sflags++;
 680                         sflags |= SASL_SEC_NOACTIVE;
 681
 682                 } else if( !strcasecmp(props[i], "nodict") ) {
 683                         got_sflags++;
 684                         sflags |= SASL_SEC_NODICTIONARY;
 685
 686                 } else if( !strcasecmp(props[i], "forwardsec") ) {
 687                         got_sflags++;
 688                         sflags |= SASL_SEC_FORWARD_SECRECY;
 689
 690                 } else if( !strcasecmp(props[i], "noanonymous")) {
 691                         got_sflags++;
 692                         sflags |= SASL_SEC_NOANONYMOUS;
 693
 694                 } else if( !strcasecmp(props[i], "passcred") ) {
 695                         got_sflags++;
 696                         sflags |= SASL_SEC_PASS_CREDENTIALS;
 697
 698                 } else if( !strncasecmp(props[i],
 699                         "minssf=", sizeof("minssf")) )
 700                 {
 701                         if( isdigit( props[i][sizeof("minssf")] ) ) {
 702                                 got_min_ssf++;
 703                                 min_ssf = atoi( &props[i][sizeof("minssf")] );
 704                         } else {
 705                                 return LDAP_NOT_SUPPORTED;
 706                         }
 707
 708                 } else if( !strncasecmp(props[i],
 709                         "maxssf=", sizeof("maxssf")) )
 710                 {
 711                         if( isdigit( props[i][sizeof("maxssf")] ) ) {
 712                                 got_max_ssf++;
 713                                 max_ssf = atoi( &props[i][sizeof("maxssf")] );
 714                         } else {
 715                                 return LDAP_NOT_SUPPORTED;
 716                         }
 717
 718                 } else if( !strncasecmp(props[i],
 719                         "maxbufsize=", sizeof("maxbufsize")) )
 720                 {
 721                         if( isdigit( props[i][sizeof("maxbufsize")] ) ) {
 722                                 got_maxbufsize++;
 723                                 maxbufsize = atoi( &props[i][sizeof("maxbufsize")] );
 724                         } else {
 725                                 return LDAP_NOT_SUPPORTED;
 726                         }
 727
 728                 } else {
 729                         return LDAP_NOT_SUPPORTED;
 730                 }
 731         }
 732
 733         if(got_sflags) {
 734                 secprops->security_flags = sflags;
 735         }
 736         if(got_min_ssf) {
 737                 secprops->min_ssf = min_ssf;
 738         }
 739         if(got_max_ssf) {
 740                 secprops->max_ssf = max_ssf;
 741         }
 742         if(got_maxbufsize) {
 743                 secprops->maxbufsize = maxbufsize;
 744         }
 745
 746         ldap_charray_free( props );
 747         return LDAP_SUCCESS;
 748 }
 749
 750 int
 751 ldap_int_sasl_config( struct ldapoptions *lo, int option, const char *arg )
 752 {
 753         int rc;
 754
 755         switch( option ) {
 756         case LDAP_OPT_X_SASL_SECPROPS:
 757                 rc = ldap_pvt_sasl_secprops( arg, &lo->ldo_sasl_secprops );
 758                 if( rc == LDAP_SUCCESS ) return 0;
 759         }
 760
 761         return -1;
 762 }
 763
 764 int
 765 ldap_int_sasl_get_option( LDAP *ld, int option, void *arg )
 766 {
 767         if ( ld == NULL )
 768                 return -1;
 769
 770         switch ( option ) {
 771                 case LDAP_OPT_X_SASL_MECH: {
 772                         *(char **)arg = ld->ld_options.ldo_def_sasl_mech
 773                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_mech ) : NULL;
 774                 } break;
 775                 case LDAP_OPT_X_SASL_REALM: {
 776                         *(char **)arg = ld->ld_options.ldo_def_sasl_realm
 777                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_realm ) : NULL;
 778                 } break;
 779                 case LDAP_OPT_X_SASL_AUTHCID: {
 780                         *(char **)arg = ld->ld_options.ldo_def_sasl_authcid
 781                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authcid ) : NULL;
 782                 } break;
 783                 case LDAP_OPT_X_SASL_AUTHZID: {
 784                         *(char **)arg = ld->ld_options.ldo_def_sasl_authzid
 785                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authzid ) : NULL;
 786                 } break;
 787
 788                 case LDAP_OPT_X_SASL_SSF: {
 789                         int sc;
 790                         sasl_ssf_t      *ssf;
 791                         sasl_conn_t *ctx;
 792
 793                         if( ld->ld_defconn == NULL ) {
 794                                 return -1;
 795                         }
 796
 797                         ctx = ld->ld_defconn->lconn_sasl_ctx;
 798
 799                         if ( ctx == NULL ) {
 800                                 return -1;
 801                         }
 802
 803                         sc = sasl_getprop( ctx, SASL_SSF,
 804                                 (void **) &ssf );
 805
 806                         if ( sc != SASL_OK ) {
 807                                 return -1;
 808                         }
 809
 810                         *(ber_len_t *)arg = *ssf;
 811                 } break;
 812
 813                 case LDAP_OPT_X_SASL_SSF_EXTERNAL:
 814                         /* this option is write only */
 815                         return -1;
 816
 817                 case LDAP_OPT_X_SASL_SSF_MIN:
 818                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.min_ssf;
 819                         break;
 820                 case LDAP_OPT_X_SASL_SSF_MAX:
 821                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.max_ssf;
 822                         break;
 823                 case LDAP_OPT_X_SASL_MAXBUFSIZE:
 824                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.maxbufsize;
 825                         break;
 826
 827                 case LDAP_OPT_X_SASL_SECPROPS:
 828                         /* this option is write only */
 829                         return -1;
 830
 831                 default:
 832                         return -1;
 833         }
 834         return 0;
 835 }
 836
 837 int
 838 ldap_int_sasl_set_option( LDAP *ld, int option, void *arg )
 839 {
 840         if ( ld == NULL )
 841                 return -1;
 842
 843         switch ( option ) {
 844         case LDAP_OPT_X_SASL_SSF:
 845                 /* This option is read-only */
 846                 return -1;
 847
 848         case LDAP_OPT_X_SASL_SSF_EXTERNAL: {
 849                 int sc;
 850                 sasl_external_properties_t extprops;
 851                 sasl_conn_t *ctx;
 852
 853                 if( ld->ld_defconn == NULL ) {
 854                         return -1;
 855                 }
 856
 857                 ctx = ld->ld_defconn->lconn_sasl_ctx;
 858
 859                 if ( ctx == NULL ) {
 860                         return -1;
 861                 }
 862
 863                 memset(&extprops, 0L, sizeof(extprops));
 864
 865                 extprops.ssf = * (ber_len_t *) arg;
 866
 867                 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 868                         (void *) &extprops );
 869
 870                 if ( sc != SASL_OK ) {
 871                         return -1;
 872                 }
 873                 } break;
 874
 875         case LDAP_OPT_X_SASL_SSF_MIN:
 876                 ld->ld_options.ldo_sasl_secprops.min_ssf = *(ber_len_t *)arg;
 877                 break;
 878         case LDAP_OPT_X_SASL_SSF_MAX:
 879                 ld->ld_options.ldo_sasl_secprops.max_ssf = *(ber_len_t *)arg;
 880                 break;
 881         case LDAP_OPT_X_SASL_MAXBUFSIZE:
 882                 ld->ld_options.ldo_sasl_secprops.maxbufsize = *(ber_len_t *)arg;
 883                 break;
 884
 885         case LDAP_OPT_X_SASL_SECPROPS: {
 886                 int sc;
 887                 sc = ldap_pvt_sasl_secprops( (char *) arg,
 888                         &ld->ld_options.ldo_sasl_secprops );
 889
 890                 return sc == LDAP_SUCCESS ? 0 : -1;
 891                 }
 892
 893         default:
 894                 return -1;
 895         }
 896         return 0;
 897 }
 898
 899 #ifdef LDAP_R_COMPILE
 900 void *ldap_pvt_sasl_mutex_new(void)
 901 {
 902         ldap_pvt_thread_mutex_t *mutex;
 903
 904         mutex = (ldap_pvt_thread_mutex_t *) LDAP_MALLOC(
 905                 sizeof(ldap_pvt_thread_mutex_t) );
 906
 907         if ( ldap_pvt_thread_mutex_init( mutex ) == 0 ) {
 908                 return mutex;
 909         }
 910         return NULL;
 911 }
 912
 913 int ldap_pvt_sasl_mutex_lock(void *mutex)
 914 {
 915         return ldap_pvt_thread_mutex_lock( (ldap_pvt_thread_mutex_t *)mutex )
 916                 ? SASL_FAIL : SASL_OK;
 917 }
 918
 919 int ldap_pvt_sasl_mutex_unlock(void *mutex)
 920 {
 921         return ldap_pvt_thread_mutex_unlock( (ldap_pvt_thread_mutex_t *)mutex )
 922                 ? SASL_FAIL : SASL_OK;
 923 }
 924
 925 void ldap_pvt_sasl_mutex_dispose(void *mutex)
 926 {
 927         (void) ldap_pvt_thread_mutex_destroy( (ldap_pvt_thread_mutex_t *)mutex );
 928         LDAP_FREE( mutex );
 929 }
 930 #endif
 931
 932 #else
 933 int ldap_int_sasl_init( void )
 934 { return LDAP_SUCCESS; }
 935
 936 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
 937 { return LDAP_SUCCESS; }
 938
 939 int
 940 ldap_int_sasl_bind(
 941         LDAP                    *ld,
 942         const char              *dn,
 943         const char              *mechs,
 944         LDAPControl             **sctrls,
 945         LDAPControl             **cctrls,
 946         unsigned                flags,
 947         LDAP_SASL_INTERACT_PROC *interact,
 948         void * defaults )
 949 { return LDAP_NOT_SUPPORTED; }
 950 #endif /* HAVE_CYRUS_SASL */