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
  17 #include "ldap-int.h"
  18 #ifdef LDAP_R_COMPILE
  19 #include "ldap_pvt_thread.h"
  20 #endif
  21
  22 #ifdef HAVE_CYRUS_SASL
  23 #include <sasl.h>
  24
  25 /*
  26 * Various Cyrus SASL related stuff.
  27 */
  28
  29 #define SASL_MAX_BUFF_SIZE      65536
  30 #define SASL_MIN_BUFF_SIZE      4096
  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 #endif
  68
  69         if ( sasl_client_init( client_callbacks ) == SASL_OK ) {
  70                 sasl_initialized = 1;
  71                 return 0;
  72         }
  73
  74         return -1;
  75 }
  76
  77 /*
  78  * SASL encryption support for LBER Sockbufs
  79  */
  80
  81 struct sb_sasl_data {
  82         sasl_conn_t             *sasl_context;
  83         Sockbuf_Buf             sec_buf_in;
  84         Sockbuf_Buf             buf_in;
  85         Sockbuf_Buf             buf_out;
  86 };
  87
  88 static int
  89 sb_sasl_setup( Sockbuf_IO_Desc *sbiod, void *arg )
  90 {
  91         struct sb_sasl_data     *p;
  92
  93         assert( sbiod != NULL );
  94
  95         p = LBER_MALLOC( sizeof( *p ) );
  96         if ( p == NULL )
  97                 return -1;
  98         p->sasl_context = (sasl_conn_t *)arg;
  99         ber_pvt_sb_buf_init( &p->sec_buf_in );
 100         ber_pvt_sb_buf_init( &p->buf_in );
 101         ber_pvt_sb_buf_init( &p->buf_out );
 102         if ( ber_pvt_sb_grow_buffer( &p->sec_buf_in, SASL_MIN_BUFF_SIZE ) < 0 ) {
 103                 errno = ENOMEM;
 104                 return -1;
 105         }
 106
 107         sbiod->sbiod_pvt = p;
 108
 109         return 0;
 110 }
 111
 112 static int
 113 sb_sasl_remove( Sockbuf_IO_Desc *sbiod )
 114 {
 115         struct sb_sasl_data     *p;
 116
 117         assert( sbiod != NULL );
 118
 119         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 120         ber_pvt_sb_buf_destroy( &p->sec_buf_in );
 121         ber_pvt_sb_buf_destroy( &p->buf_in );
 122         ber_pvt_sb_buf_destroy( &p->buf_out );
 123         LBER_FREE( p );
 124         sbiod->sbiod_pvt = NULL;
 125         return 0;
 126 }
 127
 128 static ber_len_t
 129 sb_sasl_pkt_length( const char *buf, int debuglevel )
 130 {
 131         ber_len_t               size;
 132         long                    tmp;
 133
 134         assert( buf != NULL );
 135
 136         tmp = *((long *)buf);
 137         size = ntohl( tmp );
 138
 139         if ( size > SASL_MAX_BUFF_SIZE ) {
 140                 /* somebody is trying to mess me up. */
 141                 ber_log_printf( LDAP_DEBUG_ANY, debuglevel,
 142                         "sb_sasl_pkt_length: received illegal packet length "
 143                         "of %lu bytes\n", (unsigned long)size );
 144                 size = 16; /* this should lead to an error. */
 145 }
 146
 147         return size + 4; /* include the size !!! */
 148 }
 149
 150 /* Drop a processed packet from the input buffer */
 151 static void
 152 sb_sasl_drop_packet ( Sockbuf_Buf *sec_buf_in, int debuglevel )
 153 {
 154         ber_slen_t                      len;
 155
 156         len = sec_buf_in->buf_ptr - sec_buf_in->buf_end;
 157         if ( len > 0 )
 158                 memmove( sec_buf_in->buf_base, sec_buf_in->buf_base +
 159                         sec_buf_in->buf_end, len );
 160
 161         if ( len >= 4 ) {
 162                 sec_buf_in->buf_end = sb_sasl_pkt_length( sec_buf_in->buf_base,
 163                         debuglevel);
 164         }
 165         else {
 166                 sec_buf_in->buf_end = 0;
 167         }
 168         sec_buf_in->buf_ptr = len;
 169 }
 170
 171 static ber_slen_t
 172 sb_sasl_read( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
 173 {
 174         struct sb_sasl_data     *p;
 175         ber_slen_t              ret, bufptr;
 176
 177         assert( sbiod != NULL );
 178         assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
 179
 180         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 181
 182         /* Are there anything left in the buffer? */
 183         ret = ber_pvt_sb_copy_out( &p->buf_in, buf, len );
 184         bufptr = ret;
 185         len -= ret;
 186
 187         if ( len == 0 )
 188                 return bufptr;
 189
 190         ber_pvt_sb_buf_destroy( &p->buf_in );
 191
 192         /* Read the length of the packet */
 193         while ( p->sec_buf_in.buf_ptr < 4 ) {
 194                 ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base,
 195                         4 - p->sec_buf_in.buf_ptr );
 196 #ifdef EINTR
 197                 if ( ( ret < 0 ) && ( errno == EINTR ) )
 198                         continue;
 199 #endif
 200                 if ( ret <= 0 )
 201                         return ret;
 202
 203                 p->sec_buf_in.buf_ptr += ret;
 204         }
 205
 206         /* The new packet always starts at p->sec_buf_in.buf_base */
 207         ret = sb_sasl_pkt_length( p->sec_buf_in.buf_base,
 208                 sbiod->sbiod_sb->sb_debug );
 209
 210         /* Grow the packet buffer if neccessary */
 211         if ( ( p->sec_buf_in.buf_size < ret ) &&
 212                         ber_pvt_sb_grow_buffer( &p->sec_buf_in, ret ) < 0 ) {
 213                 errno = ENOMEM;
 214                 return -1;
 215         }
 216         p->sec_buf_in.buf_end = ret;
 217
 218         /* Did we read the whole encrypted packet? */
 219         while ( p->sec_buf_in.buf_ptr < p->sec_buf_in.buf_end ) {
 220                 /* No, we have got only a part of it */
 221                 ret = p->sec_buf_in.buf_end - p->sec_buf_in.buf_ptr;
 222
 223                 ret = LBER_SBIOD_READ_NEXT( sbiod, p->sec_buf_in.buf_base +
 224                         p->sec_buf_in.buf_ptr, ret );
 225 #ifdef EINTR
 226                 if ( ( ret < 0 ) && ( errno == EINTR ) )
 227                         continue;
 228 #endif
 229                 if ( ret <= 0 )
 230                         return ret;
 231
 232                 p->sec_buf_in.buf_ptr += ret;
 233         }
 234
 235         /* Decode the packet */
 236         ret = sasl_decode( p->sasl_context, p->sec_buf_in.buf_base,
 237                 p->sec_buf_in.buf_end, &p->buf_in.buf_base,
 238                 (unsigned *)&p->buf_in.buf_end );
 239         if ( ret != SASL_OK ) {
 240                 ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
 241                         "sb_sasl_read: failed to decode packet: %s\n",
 242                         sasl_errstring( ret, NULL, NULL ) );
 243                 sb_sasl_drop_packet( &p->sec_buf_in,
 244                         sbiod->sbiod_sb->sb_debug );
 245                 errno = EIO;
 246                 return -1;
 247         }
 248
 249         /* Drop the packet from the input buffer */
 250         sb_sasl_drop_packet( &p->sec_buf_in, sbiod->sbiod_sb->sb_debug );
 251
 252         p->buf_in.buf_size = p->buf_in.buf_end;
 253
 254         bufptr += ber_pvt_sb_copy_out( &p->buf_in, (char*) buf + bufptr, len );
 255
 256         return bufptr;
 257 }
 258
 259 static ber_slen_t
 260 sb_sasl_write( Sockbuf_IO_Desc *sbiod, void *buf, ber_len_t len)
 261 {
 262         struct sb_sasl_data     *p;
 263         int                     ret;
 264
 265         assert( sbiod != NULL );
 266         assert( SOCKBUF_VALID( sbiod->sbiod_sb ) );
 267
 268         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 269
 270         /* Are there anything left in the buffer? */
 271         if ( p->buf_out.buf_ptr != p->buf_out.buf_end ) {
 272                 ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
 273                 if ( ret <= 0 )
 274                         return ret;
 275         }
 276
 277         /* now encode the next packet. */
 278         ber_pvt_sb_buf_destroy( &p->buf_out );
 279         ret = sasl_encode( p->sasl_context, buf, len, &p->buf_out.buf_base,
 280                 (unsigned *)&p->buf_out.buf_size );
 281         if ( ret != SASL_OK ) {
 282                 ber_log_printf( LDAP_DEBUG_ANY, sbiod->sbiod_sb->sb_debug,
 283                         "sb_sasl_write: failed to encode packet: %s\n",
 284                         sasl_errstring( ret, NULL, NULL ) );
 285                 return -1;
 286         }
 287         p->buf_out.buf_end = p->buf_out.buf_size;
 288
 289         ret = ber_pvt_sb_do_write( sbiod, &p->buf_out );
 290         if ( ret <= 0 )
 291                 return ret;
 292         return len;
 293 }
 294
 295 static int
 296 sb_sasl_ctrl( Sockbuf_IO_Desc *sbiod, int opt, void *arg )
 297 {
 298         struct sb_sasl_data     *p;
 299
 300         p = (struct sb_sasl_data *)sbiod->sbiod_pvt;
 301
 302         if ( opt == LBER_SB_OPT_DATA_READY ) {
 303                 if ( p->buf_in.buf_ptr != p->buf_in.buf_end )
 304                         return 1;
 305         }
 306
 307         return LBER_SBIOD_CTRL_NEXT( sbiod, opt, arg );
 308 }
 309
 310 Sockbuf_IO ldap_pvt_sockbuf_io_sasl = {
 311         sb_sasl_setup,          /* sbi_setup */
 312         sb_sasl_remove,         /* sbi_remove */
 313         sb_sasl_ctrl,           /* sbi_ctrl */
 314         sb_sasl_read,           /* sbi_read */
 315         sb_sasl_write,          /* sbi_write */
 316         NULL                    /* sbi_close */
 317 };
 318
 319 int ldap_pvt_sasl_install( Sockbuf *sb, void *ctx_arg )
 320 {
 321         Debug( LDAP_DEBUG_TRACE, "ldap_pvt_sasl_install\n",
 322                 0, 0, 0 );
 323
 324         /* don't install the stuff unless security has been negotiated */
 325
 326         if ( !ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO,
 327                         &ldap_pvt_sockbuf_io_sasl ) )
 328                 ber_sockbuf_add_io( sb, &ldap_pvt_sockbuf_io_sasl,
 329                         LBER_SBIOD_LEVEL_APPLICATION, ctx_arg );
 330
 331         return LDAP_SUCCESS;
 332 }
 333
 334 static int
 335 sasl_err2ldap( int saslerr )
 336 {
 337         int rc;
 338
 339         switch (saslerr) {
 340                 case SASL_CONTINUE:
 341                         rc = LDAP_MORE_RESULTS_TO_RETURN;
 342                         break;
 343                 case SASL_INTERACT:
 344                         rc = LDAP_LOCAL_ERROR;
 345                         break;
 346                 case SASL_OK:
 347                         rc = LDAP_SUCCESS;
 348                         break;
 349                 case SASL_FAIL:
 350                         rc = LDAP_LOCAL_ERROR;
 351                         break;
 352                 case SASL_NOMEM:
 353                         rc = LDAP_NO_MEMORY;
 354                         break;
 355                 case SASL_NOMECH:
 356                         rc = LDAP_AUTH_UNKNOWN;
 357                         break;
 358                 case SASL_BADAUTH:
 359                         rc = LDAP_AUTH_UNKNOWN;
 360                         break;
 361                 case SASL_NOAUTHZ:
 362                         rc = LDAP_PARAM_ERROR;
 363                         break;
 364                 case SASL_TOOWEAK:
 365                 case SASL_ENCRYPT:
 366                         rc = LDAP_AUTH_UNKNOWN;
 367                         break;
 368                 default:
 369                         rc = LDAP_LOCAL_ERROR;
 370                         break;
 371         }
 372
 373         assert( rc == LDAP_SUCCESS || LDAP_API_ERROR( rc ) );
 374         return rc;
 375 }
 376
 377 int
 378 ldap_int_sasl_open(
 379         LDAP *ld,
 380         LDAPConn *lc,
 381         const char * host,
 382         ber_len_t ssf )
 383 {
 384         int rc;
 385         sasl_conn_t *ctx;
 386
 387         sasl_callback_t *session_callbacks =
 388                 ber_memcalloc( 2, sizeof( sasl_callback_t ) );
 389
 390         if( session_callbacks == NULL ) return LDAP_NO_MEMORY;
 391
 392         session_callbacks[0].id = SASL_CB_USER;
 393         session_callbacks[0].proc = NULL;
 394         session_callbacks[0].context = ld;
 395
 396         session_callbacks[1].id = SASL_CB_LIST_END;
 397         session_callbacks[1].proc = NULL;
 398         session_callbacks[1].context = NULL;
 399
 400         assert( lc->lconn_sasl_ctx == NULL );
 401
 402         if ( host == NULL ) {
 403                 ld->ld_errno = LDAP_UNAVAILABLE;
 404                 return ld->ld_errno;
 405         }
 406
 407         rc = sasl_client_new( "ldap", host,
 408                 session_callbacks,
 409 #ifdef LDAP_SASL_SECURITY_LAYER
 410                 SASL_SECURITY_LAYER,
 411 #else
 412                 0,
 413 #endif
 414                 &ctx );
 415
 416         if ( rc != SASL_OK ) {
 417                 ld->ld_errno = sasl_err2ldap( rc );
 418                 return ld->ld_errno;
 419         }
 420
 421         Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: %s\n",
 422                 host, 0, 0 );
 423
 424         lc->lconn_sasl_ctx = ctx;
 425
 426         if( ssf ) {
 427                 sasl_external_properties_t extprops;
 428                 memset(&extprops, 0L, sizeof(extprops));
 429                 extprops.ssf = ssf;
 430
 431                 (void) sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 432                         (void *) &extprops );
 433
 434                 Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: ssf=%ld\n",
 435                         (long) ssf, 0, 0 );
 436         }
 437
 438         return LDAP_SUCCESS;
 439 }
 440
 441 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
 442 {
 443         sasl_conn_t *ctx = lc->lconn_sasl_ctx;
 444         assert( ctx != NULL );
 445
 446         if( ctx ) {
 447                 sasl_dispose( &ctx );
 448                 lc->lconn_sasl_ctx = NULL;
 449         }
 450
 451         return LDAP_SUCCESS;
 452 }
 453
 454 int
 455 ldap_int_sasl_bind(
 456         LDAP                    *ld,
 457         const char              *dn,
 458         const char              *mechs,
 459         LDAPControl             **sctrls,
 460         LDAPControl             **cctrls,
 461         unsigned                flags,
 462         LDAP_SASL_INTERACT_PROC *interact,
 463         void * defaults )
 464 {
 465         char *data;
 466         const char *mech = NULL;
 467         const char *pmech = NULL;
 468         int                     saslrc, rc;
 469         sasl_ssf_t              *ssf = NULL;
 470         sasl_conn_t     *ctx;
 471         sasl_interact_t *prompts = NULL;
 472         unsigned credlen;
 473         struct berval ccred;
 474         ber_socket_t            sd;
 475
 476         Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_bind: %s\n",
 477                 mechs ? mechs : "<null>", 0, 0 );
 478
 479         /* do a quick !LDAPv3 check... ldap_sasl_bind will do the rest. */
 480         if (ld->ld_version < LDAP_VERSION3) {
 481                 ld->ld_errno = LDAP_NOT_SUPPORTED;
 482                 return ld->ld_errno;
 483         }
 484
 485         ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
 486
 487         if ( sd == AC_SOCKET_INVALID ) {
 488                 /* not connected yet */
 489                 int rc = ldap_open_defconn( ld );
 490
 491                 if( rc < 0 ) return ld->ld_errno;
 492                 ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
 493
 494                 if( sd == AC_SOCKET_INVALID ) {
 495                         ld->ld_errno = LDAP_UNAVAILABLE;
 496                         return ld->ld_errno;
 497                 }
 498         }
 499
 500         ctx = ld->ld_defconn->lconn_sasl_ctx;
 501
 502         if( ctx == NULL ) {
 503                 ld->ld_errno = LDAP_UNAVAILABLE;
 504                 return ld->ld_errno;
 505         }
 506
 507         /* (re)set security properties */
 508         sasl_setprop( ctx, SASL_SEC_PROPS,
 509                 &ld->ld_options.ldo_sasl_secprops );
 510
 511         ccred.bv_val = NULL;
 512         ccred.bv_len = 0;
 513
 514         do {
 515                 saslrc = sasl_client_start( ctx,
 516                         mechs,
 517                         NULL,
 518                         &prompts,
 519                         &ccred.bv_val,
 520                         &credlen,
 521                         &mech );
 522
 523                 if( pmech == NULL && mech != NULL ) {
 524                         pmech = mech;
 525
 526                         if( flags != LDAP_SASL_QUIET ) {
 527                                 fprintf(stderr,
 528                                         "SASL/%s authentication started\n",
 529                                         pmech );
 530                         }
 531                 }
 532
 533                 if( saslrc == SASL_INTERACT ) {
 534                         int res;
 535                         if( !interact ) break;
 536                         res = (interact)( ld, flags, defaults, prompts );
 537                         if( res != LDAP_SUCCESS ) {
 538                                 break;
 539                         }
 540                 }
 541         } while ( saslrc == SASL_INTERACT );
 542
 543         ccred.bv_len = credlen;
 544
 545         if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
 546                 ld->ld_errno = sasl_err2ldap( saslrc );
 547                 return ld->ld_errno;
 548         }
 549
 550         do {
 551                 struct berval *scred;
 552                 unsigned credlen;
 553
 554                 scred = NULL;
 555
 556                 rc = ldap_sasl_bind_s( ld, dn, mech, &ccred, sctrls, cctrls, &scred );
 557
 558                 if ( ccred.bv_val != NULL ) {
 559                         LDAP_FREE( ccred.bv_val );
 560                         ccred.bv_val = NULL;
 561                 }
 562
 563                 if ( rc != LDAP_SUCCESS && rc != LDAP_SASL_BIND_IN_PROGRESS ) {
 564                         return ld->ld_errno;
 565                 }
 566
 567                 if( rc == LDAP_SUCCESS && saslrc == SASL_OK ) {
 568                         /* we're done, no need to step */
 569                         if( scred ) {
 570                                 /* but server provided us with data! */
 571                                 Debug( LDAP_DEBUG_TRACE,
 572                                         "ldap_int_sasl_bind: rc=%d sasl=%d len=%ld\n",
 573                                         rc, saslrc, scred->bv_len );
 574                                 ber_bvfree( scred );
 575                                 return ld->ld_errno = LDAP_LOCAL_ERROR;
 576                         }
 577                         break;
 578                 }
 579
 580                 do {
 581                         saslrc = sasl_client_step( ctx,
 582                                 (scred == NULL) ? NULL : scred->bv_val,
 583                                 (scred == NULL) ? 0 : scred->bv_len,
 584                                 &prompts,
 585                                 &ccred.bv_val,
 586                                 &credlen );
 587
 588                         Debug( LDAP_DEBUG_TRACE, "sasl_client_start: %d\n",
 589                                 saslrc, 0, 0 );
 590
 591                         if( saslrc == SASL_INTERACT ) {
 592                                 int res;
 593                                 if( !interact ) break;
 594                                 res = (interact)( ld, flags, defaults, prompts );
 595                                 if( res != LDAP_SUCCESS ) {
 596                                         break;
 597                                 }
 598                         }
 599                 } while ( saslrc == SASL_INTERACT );
 600
 601                 ccred.bv_len = credlen;
 602                 ber_bvfree( scred );
 603
 604                 if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
 605                         ld->ld_errno = sasl_err2ldap( saslrc );
 606                         return ld->ld_errno;
 607                 }
 608         } while ( rc == LDAP_SASL_BIND_IN_PROGRESS );
 609
 610         if ( rc != LDAP_SUCCESS ) {
 611                 return rc;
 612         }
 613
 614         if ( saslrc != SASL_OK ) {
 615                 return ld->ld_errno = sasl_err2ldap( saslrc );
 616         }
 617
 618         /* likely should add a quiet option */
 619
 620         if( flags != LDAP_SASL_QUIET ) {
 621                 saslrc = sasl_getprop( ctx, SASL_USERNAME, (void **) &data );
 622                 if( saslrc == SASL_OK && data && *data ) {
 623                         fprintf( stderr, "SASL username: %s\n", data );
 624                 }
 625
 626                 saslrc = sasl_getprop( ctx, SASL_REALM, (void **) &data );
 627                 if( saslrc == SASL_OK && data && *data ) {
 628                         fprintf( stderr, "SASL realm: %s\n", data );
 629                 }
 630         }
 631
 632         saslrc = sasl_getprop( ctx, SASL_SSF, (void **) &ssf );
 633         if( saslrc == SASL_OK ) {
 634                 if( flags != LDAP_SASL_QUIET ) {
 635                         fprintf( stderr, "SASL SSF: %lu\n",
 636                                 (unsigned long) *ssf );
 637                 }
 638
 639 #ifdef LDAP_SASL_SECURITY_LAYER
 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 #endif
 647         }
 648
 649         return rc;
 650 }
 651
 652 int ldap_pvt_sasl_secprops(
 653         const char *in,
 654         sasl_security_properties_t *secprops )
 655 {
 656         int i;
 657         char **props = ldap_str2charray( in, "," );
 658         unsigned sflags = 0;
 659         int got_sflags = 0;
 660         sasl_ssf_t max_ssf;
 661         int got_max_ssf = 0;
 662         sasl_ssf_t min_ssf;
 663         int got_min_ssf = 0;
 664         unsigned maxbufsize;
 665         int got_maxbufsize = 0;
 666
 667         if( props == NULL || secprops == NULL ) {
 668                 return LDAP_PARAM_ERROR;
 669         }
 670
 671         for( i=0; props[i]; i++ ) {
 672                 if( !strcasecmp(props[i], "none") ) {
 673                         got_sflags++;
 674
 675                 } else if( !strcasecmp(props[i], "noplain") ) {
 676                         got_sflags++;
 677                         sflags |= SASL_SEC_NOPLAINTEXT;
 678
 679                 } else if( !strcasecmp(props[i], "noactive") ) {
 680                         got_sflags++;
 681                         sflags |= SASL_SEC_NOACTIVE;
 682
 683                 } else if( !strcasecmp(props[i], "nodict") ) {
 684                         got_sflags++;
 685                         sflags |= SASL_SEC_NODICTIONARY;
 686
 687                 } else if( !strcasecmp(props[i], "forwardsec") ) {
 688                         got_sflags++;
 689                         sflags |= SASL_SEC_FORWARD_SECRECY;
 690
 691                 } else if( !strcasecmp(props[i], "noanonymous")) {
 692                         got_sflags++;
 693                         sflags |= SASL_SEC_NOANONYMOUS;
 694
 695                 } else if( !strcasecmp(props[i], "passcred") ) {
 696                         got_sflags++;
 697                         sflags |= SASL_SEC_PASS_CREDENTIALS;
 698
 699                 } else if( !strncasecmp(props[i],
 700                         "minssf=", sizeof("minssf")) )
 701                 {
 702                         if( isdigit( props[i][sizeof("minssf")] ) ) {
 703                                 got_max_ssf++;
 704                                 min_ssf = atoi( &props[i][sizeof("minssf")] );
 705                         } else {
 706                                 return LDAP_NOT_SUPPORTED;
 707                         }
 708
 709                 } else if( !strncasecmp(props[i],
 710                         "maxssf=", sizeof("maxssf")) )
 711                 {
 712                         if( isdigit( props[i][sizeof("maxssf")] ) ) {
 713                                 got_max_ssf++;
 714                                 max_ssf = atoi( &props[i][sizeof("maxssf")] );
 715                         } else {
 716                                 return LDAP_NOT_SUPPORTED;
 717                         }
 718
 719                 } else if( !strncasecmp(props[i],
 720                         "maxbufsize=", sizeof("maxbufsize")) )
 721                 {
 722                         if( isdigit( props[i][sizeof("maxbufsize")] ) ) {
 723                                 got_maxbufsize++;
 724                                 maxbufsize = atoi( &props[i][sizeof("maxbufsize")] );
 725                         } else {
 726                                 return LDAP_NOT_SUPPORTED;
 727                         }
 728
 729                 } else {
 730                         return LDAP_NOT_SUPPORTED;
 731                 }
 732         }
 733
 734         if(got_sflags) {
 735                 secprops->security_flags = sflags;
 736         }
 737         if(got_min_ssf) {
 738                 secprops->min_ssf = min_ssf;
 739         }
 740         if(got_max_ssf) {
 741                 secprops->max_ssf = max_ssf;
 742         }
 743         if(got_maxbufsize) {
 744                 secprops->maxbufsize = maxbufsize;
 745         }
 746
 747         ldap_charray_free( props );
 748         return LDAP_SUCCESS;
 749 }
 750
 751 int
 752 ldap_int_sasl_config( struct ldapoptions *lo, int option, const char *arg )
 753 {
 754         int rc;
 755
 756         switch( option ) {
 757         case LDAP_OPT_X_SASL_SECPROPS:
 758                 rc = ldap_pvt_sasl_secprops( arg, &lo->ldo_sasl_secprops );
 759                 if( rc == LDAP_SUCCESS ) return 0;
 760         }
 761
 762         return -1;
 763 }
 764
 765 int
 766 ldap_int_sasl_get_option( LDAP *ld, int option, void *arg )
 767 {
 768         if ( ld == NULL )
 769                 return -1;
 770
 771         switch ( option ) {
 772                 case LDAP_OPT_X_SASL_MECH: {
 773                         *(char **)arg = ld->ld_options.ldo_def_sasl_mech
 774                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_mech ) : NULL;
 775                 } break;
 776                 case LDAP_OPT_X_SASL_REALM: {
 777                         *(char **)arg = ld->ld_options.ldo_def_sasl_realm
 778                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_realm ) : NULL;
 779                 } break;
 780                 case LDAP_OPT_X_SASL_AUTHCID: {
 781                         *(char **)arg = ld->ld_options.ldo_def_sasl_authcid
 782                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authcid ) : NULL;
 783                 } break;
 784                 case LDAP_OPT_X_SASL_AUTHZID: {
 785                         *(char **)arg = ld->ld_options.ldo_def_sasl_authzid
 786                                 ? LDAP_STRDUP( ld->ld_options.ldo_def_sasl_authzid ) : NULL;
 787                 } break;
 788
 789                 case LDAP_OPT_X_SASL_SSF: {
 790                         int sc;
 791                         sasl_ssf_t      *ssf;
 792                         sasl_conn_t *ctx;
 793
 794                         if( ld->ld_defconn == NULL ) {
 795                                 return -1;
 796                         }
 797
 798                         ctx = ld->ld_defconn->lconn_sasl_ctx;
 799
 800                         if ( ctx == NULL ) {
 801                                 return -1;
 802                         }
 803
 804                         sc = sasl_getprop( ctx, SASL_SSF,
 805                                 (void **) &ssf );
 806
 807                         if ( sc != SASL_OK ) {
 808                                 return -1;
 809                         }
 810
 811                         *(ber_len_t *)arg = *ssf;
 812                 } break;
 813
 814                 case LDAP_OPT_X_SASL_SSF_EXTERNAL:
 815                         /* this option is write only */
 816                         return -1;
 817
 818                 case LDAP_OPT_X_SASL_SSF_MIN:
 819                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.min_ssf;
 820                         break;
 821                 case LDAP_OPT_X_SASL_SSF_MAX:
 822                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.max_ssf;
 823                         break;
 824                 case LDAP_OPT_X_SASL_MAXBUFSIZE:
 825                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.maxbufsize;
 826                         break;
 827
 828                 case LDAP_OPT_X_SASL_SECPROPS:
 829                         /* this option is write only */
 830                         return -1;
 831
 832                 default:
 833                         return -1;
 834         }
 835         return 0;
 836 }
 837
 838 int
 839 ldap_int_sasl_set_option( LDAP *ld, int option, void *arg )
 840 {
 841         if ( ld == NULL )
 842                 return -1;
 843
 844         switch ( option ) {
 845         case LDAP_OPT_X_SASL_SSF:
 846                 /* This option is read-only */
 847                 return -1;
 848
 849         case LDAP_OPT_X_SASL_SSF_EXTERNAL: {
 850                 int sc;
 851                 sasl_external_properties_t extprops;
 852                 sasl_conn_t *ctx;
 853
 854                 if( ld->ld_defconn == NULL ) {
 855                         return -1;
 856                 }
 857
 858                 ctx = ld->ld_defconn->lconn_sasl_ctx;
 859
 860                 if ( ctx == NULL ) {
 861                         return -1;
 862                 }
 863
 864                 memset(&extprops, 0L, sizeof(extprops));
 865
 866                 extprops.ssf = * (ber_len_t *) arg;
 867
 868                 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 869                         (void *) &extprops );
 870
 871                 if ( sc != SASL_OK ) {
 872                         return -1;
 873                 }
 874                 } break;
 875
 876         case LDAP_OPT_X_SASL_SSF_MIN:
 877                 ld->ld_options.ldo_sasl_secprops.min_ssf = *(ber_len_t *)arg;
 878                 break;
 879         case LDAP_OPT_X_SASL_SSF_MAX:
 880                 ld->ld_options.ldo_sasl_secprops.max_ssf = *(ber_len_t *)arg;
 881                 break;
 882         case LDAP_OPT_X_SASL_MAXBUFSIZE:
 883                 ld->ld_options.ldo_sasl_secprops.maxbufsize = *(ber_len_t *)arg;
 884                 break;
 885
 886         case LDAP_OPT_X_SASL_SECPROPS: {
 887                 int sc;
 888                 sc = ldap_pvt_sasl_secprops( (char *) arg,
 889                         &ld->ld_options.ldo_sasl_secprops );
 890
 891                 return sc == LDAP_SUCCESS ? 0 : -1;
 892                 }
 893
 894         default:
 895                 return -1;
 896         }
 897         return 0;
 898 }
 899
 900 #ifdef LDAP_R_COMPILE
 901 void *ldap_pvt_sasl_mutex_new(void)
 902 {
 903         ldap_pvt_thread_mutex_t *mutex;
 904
 905         mutex = (ldap_pvt_thread_mutex_t *) LDAP_MALLOC(
 906                 sizeof(ldap_pvt_thread_mutex_t) );
 907
 908         if ( ldap_pvt_thread_mutex_init( mutex ) == 0 ) {
 909                 return mutex;
 910         }
 911         return NULL;
 912 }
 913
 914 int ldap_pvt_sasl_mutex_lock(void *mutex)
 915 {
 916         return ldap_pvt_thread_mutex_lock( (ldap_pvt_thread_mutex_t *)mutex )
 917                 ? SASL_FAIL : SASL_OK;
 918 }
 919
 920 int ldap_pvt_sasl_mutex_unlock(void *mutex)
 921 {
 922         return ldap_pvt_thread_mutex_unlock( (ldap_pvt_thread_mutex_t *)mutex )
 923                 ? SASL_FAIL : SASL_OK;
 924 }
 925
 926 void ldap_pvt_sasl_mutex_dispose(void *mutex)
 927 {
 928         (void) ldap_pvt_thread_mutex_destroy( (ldap_pvt_thread_mutex_t *)mutex );
 929         LDAP_FREE( mutex );
 930 }
 931 #endif
 932
 933 #else
 934 int ldap_int_sasl_init( void )
 935 { return LDAP_SUCCESS; }
 936
 937 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
 938 { return LDAP_SUCCESS; }
 939
 940 int
 941 ldap_int_sasl_bind(
 942         LDAP                    *ld,
 943         const char              *dn,
 944         const char              *mechs,
 945         LDAPControl             **sctrls,
 946         LDAPControl             **cctrls,
 947         unsigned                flags,
 948         LDAP_SASL_INTERACT_PROC *interact,
 949         void * defaults )
 950 { return LDAP_NOT_SUPPORTED; }
 951 #endif /* HAVE_CYRUS_SASL */