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_OK:
 344                         rc = LDAP_SUCCESS;
 345                         break;
 346                 case SASL_FAIL:
 347                         rc = LDAP_LOCAL_ERROR;
 348                         break;
 349                 case SASL_NOMEM:
 350                         rc = LDAP_NO_MEMORY;
 351                         break;
 352                 case SASL_NOMECH:
 353                         rc = LDAP_AUTH_UNKNOWN;
 354                         break;
 355                 case SASL_BADAUTH:
 356                         rc = LDAP_AUTH_UNKNOWN;
 357                         break;
 358                 case SASL_NOAUTHZ:
 359                         rc = LDAP_PARAM_ERROR;
 360                         break;
 361                 case SASL_TOOWEAK:
 362                 case SASL_ENCRYPT:
 363                         rc = LDAP_AUTH_UNKNOWN;
 364                         break;
 365                 default:
 366                         rc = LDAP_LOCAL_ERROR;
 367                         break;
 368         }
 369
 370         assert( rc == LDAP_SUCCESS || LDAP_API_ERROR( rc ) );
 371         return rc;
 372 }
 373
 374 int
 375 ldap_int_sasl_open(
 376         LDAP *ld,
 377         LDAPConn *lc,
 378         const char * host,
 379         ber_len_t ssf )
 380 {
 381         int rc;
 382         sasl_conn_t *ctx;
 383         assert( lc->lconn_sasl_ctx == NULL );
 384
 385         if ( host == NULL ) {
 386                 ld->ld_errno = LDAP_UNAVAILABLE;
 387                 return ld->ld_errno;
 388         }
 389
 390         rc = sasl_client_new( "ldap", host,
 391                 NULL,
 392 #ifdef LDAP_SASL_SECURITY_LAYER
 393                 SASL_SECURITY_LAYER,
 394 #else
 395                 0,
 396 #endif
 397                 &ctx );
 398
 399         if ( rc != SASL_OK ) {
 400                 ld->ld_errno = sasl_err2ldap( rc );
 401                 return ld->ld_errno;
 402         }
 403
 404         Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: %s\n",
 405                 host, 0, 0 );
 406
 407         lc->lconn_sasl_ctx = ctx;
 408
 409         if( ssf ) {
 410                 sasl_external_properties_t extprops;
 411                 memset(&extprops, 0L, sizeof(extprops));
 412                 extprops.ssf = ssf;
 413
 414                 (void) sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 415                         (void *) &extprops );
 416
 417                 Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_open: ssf=%ld\n",
 418                         (long) ssf, 0, 0 );
 419         }
 420
 421         return LDAP_SUCCESS;
 422 }
 423
 424 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
 425 {
 426         sasl_conn_t *ctx = lc->lconn_sasl_ctx;
 427         assert( ctx != NULL );
 428
 429         if( ctx ) {
 430                 sasl_dispose( &ctx );
 431                 lc->lconn_sasl_ctx = NULL;
 432         }
 433
 434         return LDAP_SUCCESS;
 435 }
 436
 437 int
 438 ldap_int_sasl_bind(
 439         LDAP                    *ld,
 440         const char              *dn,
 441         const char              *mechs,
 442         LDAPControl             **sctrls,
 443         LDAPControl             **cctrls )
 444 {
 445         const char *mech = NULL;
 446         const char *pmech = NULL;
 447         int                     saslrc, rc;
 448         sasl_ssf_t              *ssf = NULL;
 449         sasl_conn_t     *ctx;
 450         sasl_interact_t *prompts = NULL;
 451         unsigned credlen;
 452         struct berval ccred, *scred;
 453         ber_socket_t            sd;
 454
 455         Debug( LDAP_DEBUG_TRACE, "ldap_int_sasl_bind: %s\n",
 456                 mechs ? mechs : "<null>", 0, 0 );
 457
 458         /* do a quick !LDAPv3 check... ldap_sasl_bind will do the rest. */
 459         if (ld->ld_version < LDAP_VERSION3) {
 460                 ld->ld_errno = LDAP_NOT_SUPPORTED;
 461                 return ld->ld_errno;
 462         }
 463
 464         ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
 465
 466         if ( sd == AC_SOCKET_INVALID ) {
 467                 /* not connected yet */
 468                 int rc = ldap_open_defconn( ld );
 469
 470                 if( rc < 0 ) return ld->ld_errno;
 471                 ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, &sd );
 472
 473                 if( sd == AC_SOCKET_INVALID ) {
 474                         ld->ld_errno = LDAP_UNAVAILABLE;
 475                         return ld->ld_errno;
 476                 }
 477         }
 478
 479         ctx = ld->ld_defconn->lconn_sasl_ctx;
 480
 481         if( ctx == NULL ) {
 482                 ld->ld_errno = LDAP_UNAVAILABLE;
 483                 return ld->ld_errno;
 484         }
 485
 486         /* (re)set security properties */
 487         sasl_setprop( ctx, SASL_SEC_PROPS,
 488                 &ld->ld_options.ldo_sasl_secprops );
 489
 490         ccred.bv_val = NULL;
 491         ccred.bv_len = 0;
 492
 493         do {
 494                 saslrc = sasl_client_start( ctx,
 495                         mechs,
 496                         NULL,
 497                         &prompts,
 498                         &ccred.bv_val,
 499                         &credlen,
 500                         &mech );
 501
 502                 if( pmech == NULL && mech != NULL ) {
 503                         pmech = mech;
 504
 505                         fprintf(stderr,
 506                                 "SASL/%s authentication started\n",
 507                                 pmech );
 508                 }
 509
 510                 if( saslrc == SASL_INTERACT ) {
 511                         if( !ld->ld_options.ldo_sasl_interact ) break;
 512
 513                         rc = (ld->ld_options.ldo_sasl_interact)( ld, prompts );
 514                         if( rc != LDAP_SUCCESS ) {
 515                                 break;
 516                         }
 517                 }
 518         } while ( saslrc == SASL_INTERACT );
 519
 520         ccred.bv_len = credlen;
 521
 522         if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
 523                 ld->ld_errno = sasl_err2ldap( saslrc );
 524                 return ld->ld_errno;
 525         }
 526
 527         scred = NULL;
 528
 529         do {
 530                 unsigned credlen;
 531
 532                 rc = ldap_sasl_bind_s( ld, dn, mech, &ccred, sctrls, cctrls, &scred );
 533
 534                 if ( rc == LDAP_SUCCESS ) {
 535                         break;
 536                 } else if ( rc != LDAP_SASL_BIND_IN_PROGRESS ) {
 537                         if ( ccred.bv_val != NULL ) {
 538                                 LDAP_FREE( ccred.bv_val );
 539                         }
 540                         return ld->ld_errno;
 541                 }
 542
 543                 if ( ccred.bv_val != NULL ) {
 544                         LDAP_FREE( ccred.bv_val );
 545                         ccred.bv_val = NULL;
 546                 }
 547
 548                 do {
 549                         saslrc = sasl_client_step( ctx,
 550                                 (scred == NULL) ? NULL : scred->bv_val,
 551                                 (scred == NULL) ? 0 : scred->bv_len,
 552                                 &prompts,
 553                                 &ccred.bv_val,
 554                                 &credlen );
 555
 556                         Debug( LDAP_DEBUG_TRACE, "sasl_client_start: %d\n",
 557                                 saslrc, 0, 0 );
 558
 559                         if( saslrc == SASL_INTERACT ) {
 560                                 fprintf(stderr, "Interacting\n");
 561                                 if( !ld->ld_options.ldo_sasl_interact ) break;
 562
 563                                 rc = (ld->ld_options.ldo_sasl_interact)( ld, prompts );
 564                                 if( rc != LDAP_SUCCESS ) {
 565                                         break;
 566                                 }
 567                         }
 568                 } while ( saslrc == SASL_INTERACT );
 569
 570                 ccred.bv_len = credlen;
 571                 ber_bvfree( scred );
 572
 573                 if ( (saslrc != SASL_OK) && (saslrc != SASL_CONTINUE) ) {
 574                         ld->ld_errno = sasl_err2ldap( saslrc );
 575                         return ld->ld_errno;
 576                 }
 577         } while ( rc == LDAP_SASL_BIND_IN_PROGRESS );
 578
 579         assert ( rc == LDAP_SUCCESS );
 580
 581         if ( sasl_getprop( ctx, SASL_SSF, (void **) &ssf )
 582                 == SASL_OK && ssf && *ssf > 1 )
 583         {
 584 #ifdef LDAP_SASL_SECURITY_LAYER
 585                 fprintf(stderr, "Installing Security Layer: ssf=%lu\n",
 586                         (unsigned long) *ssf );
 587
 588                 ldap_pvt_sasl_install( ld->ld_sb, ctx );
 589 #else
 590                 fprintf(stderr, "SASL Security Factor is %lu\n",
 591                         (unsigned long) *ssf );
 592 #endif
 593         }
 594
 595         return rc;
 596 }
 597
 598 int ldap_pvt_sasl_secprops(
 599         const char *in,
 600         sasl_security_properties_t *secprops )
 601 {
 602         int i;
 603         char **props = ldap_str2charray( in, "," );
 604         unsigned sflags = 0;
 605         int got_sflags = 0;
 606         sasl_ssf_t max_ssf;
 607         int got_max_ssf = 0;
 608         sasl_ssf_t min_ssf;
 609         int got_min_ssf = 0;
 610         unsigned maxbufsize;
 611         int got_maxbufsize = 0;
 612
 613         if( props == NULL || secprops == NULL ) {
 614                 return LDAP_PARAM_ERROR;
 615         }
 616
 617         for( i=0; props[i]; i++ ) {
 618                 if( !strcasecmp(props[i], "none") ) {
 619                         got_sflags++;
 620
 621                 } else if( !strcasecmp(props[i], "noplain") ) {
 622                         got_sflags++;
 623                         sflags |= SASL_SEC_NOPLAINTEXT;
 624
 625                 } else if( !strcasecmp(props[i], "noactive") ) {
 626                         got_sflags++;
 627                         sflags |= SASL_SEC_NOACTIVE;
 628
 629                 } else if( !strcasecmp(props[i], "nodict") ) {
 630                         got_sflags++;
 631                         sflags |= SASL_SEC_NODICTIONARY;
 632
 633                 } else if( !strcasecmp(props[i], "forwardsec") ) {
 634                         got_sflags++;
 635                         sflags |= SASL_SEC_FORWARD_SECRECY;
 636
 637                 } else if( !strcasecmp(props[i], "noanonymous")) {
 638                         got_sflags++;
 639                         sflags |= SASL_SEC_NOANONYMOUS;
 640
 641                 } else if( !strcasecmp(props[i], "passcred") ) {
 642                         got_sflags++;
 643                         sflags |= SASL_SEC_PASS_CREDENTIALS;
 644
 645                 } else if( !strncasecmp(props[i],
 646                         "minssf=", sizeof("minssf")) )
 647                 {
 648                         if( isdigit( props[i][sizeof("minssf")] ) ) {
 649                                 got_max_ssf++;
 650                                 min_ssf = atoi( &props[i][sizeof("minssf")] );
 651                         } else {
 652                                 return LDAP_NOT_SUPPORTED;
 653                         }
 654
 655                 } else if( !strncasecmp(props[i],
 656                         "maxssf=", sizeof("maxssf")) )
 657                 {
 658                         if( isdigit( props[i][sizeof("maxssf")] ) ) {
 659                                 got_max_ssf++;
 660                                 max_ssf = atoi( &props[i][sizeof("maxssf")] );
 661                         } else {
 662                                 return LDAP_NOT_SUPPORTED;
 663                         }
 664
 665                 } else if( !strncasecmp(props[i],
 666                         "maxbufsize=", sizeof("maxbufsize")) )
 667                 {
 668                         if( isdigit( props[i][sizeof("maxbufsize")] ) ) {
 669                                 got_maxbufsize++;
 670                                 maxbufsize = atoi( &props[i][sizeof("maxbufsize")] );
 671                         } else {
 672                                 return LDAP_NOT_SUPPORTED;
 673                         }
 674
 675                 } else {
 676                         return LDAP_NOT_SUPPORTED;
 677                 }
 678         }
 679
 680         if(got_sflags) {
 681                 secprops->security_flags = sflags;
 682         }
 683         if(got_min_ssf) {
 684                 secprops->min_ssf = min_ssf;
 685         }
 686         if(got_max_ssf) {
 687                 secprops->max_ssf = max_ssf;
 688         }
 689         if(got_maxbufsize) {
 690                 secprops->maxbufsize = maxbufsize;
 691         }
 692
 693         ldap_charray_free( props );
 694         return LDAP_SUCCESS;
 695 }
 696
 697 int
 698 ldap_int_sasl_config( struct ldapoptions *lo, int option, const char *arg )
 699 {
 700         int rc;
 701
 702         switch( option ) {
 703         case LDAP_OPT_X_SASL_SECPROPS:
 704                 rc = ldap_pvt_sasl_secprops( arg, &lo->ldo_sasl_secprops );
 705                 if( rc == LDAP_SUCCESS ) return 0;
 706         }
 707
 708         return -1;
 709 }
 710
 711 int
 712 ldap_int_sasl_get_option( LDAP *ld, int option, void *arg )
 713 {
 714         if ( ld == NULL )
 715                 return -1;
 716
 717         switch ( option ) {
 718                 case LDAP_OPT_X_SASL_SSF: {
 719                         int sc;
 720                         sasl_ssf_t      *ssf;
 721                         sasl_conn_t *ctx;
 722
 723                         if( ld->ld_defconn == NULL ) {
 724                                 return -1;
 725                         }
 726
 727                         ctx = ld->ld_defconn->lconn_sasl_ctx;
 728
 729                         if ( ctx == NULL ) {
 730                                 return -1;
 731                         }
 732
 733                         sc = sasl_getprop( ctx, SASL_SSF,
 734                                 (void **) &ssf );
 735
 736                         if ( sc != SASL_OK ) {
 737                                 return -1;
 738                         }
 739
 740                         *(ber_len_t *)arg = *ssf;
 741                 } break;
 742
 743                 case LDAP_OPT_X_SASL_SSF_EXTERNAL:
 744                         /* this option is write only */
 745                         return -1;
 746
 747                 case LDAP_OPT_X_SASL_SSF_MIN:
 748                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.min_ssf;
 749                         break;
 750                 case LDAP_OPT_X_SASL_SSF_MAX:
 751                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.max_ssf;
 752                         break;
 753                 case LDAP_OPT_X_SASL_MAXBUFSIZE:
 754                         *(ber_len_t *)arg = ld->ld_options.ldo_sasl_secprops.maxbufsize;
 755                         break;
 756
 757                 case LDAP_OPT_X_SASL_SECPROPS:
 758                         /* this option is write only */
 759                         return -1;
 760
 761                 default:
 762                         return -1;
 763         }
 764         return 0;
 765 }
 766
 767 int
 768 ldap_int_sasl_set_option( LDAP *ld, int option, void *arg )
 769 {
 770         if ( ld == NULL )
 771                 return -1;
 772
 773         switch ( option ) {
 774         case LDAP_OPT_X_SASL_SSF:
 775                 /* This option is read-only */
 776                 return -1;
 777
 778         case LDAP_OPT_X_SASL_SSF_EXTERNAL: {
 779                 int sc;
 780                 sasl_external_properties_t extprops;
 781                 sasl_conn_t *ctx;
 782
 783                 if( ld->ld_defconn == NULL ) {
 784                         return -1;
 785                 }
 786
 787                 ctx = ld->ld_defconn->lconn_sasl_ctx;
 788
 789                 if ( ctx == NULL ) {
 790                         return -1;
 791                 }
 792
 793                 memset(&extprops, 0L, sizeof(extprops));
 794
 795                 extprops.ssf = * (ber_len_t *) arg;
 796
 797                 sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 798                         (void *) &extprops );
 799
 800                 if ( sc != SASL_OK ) {
 801                         return -1;
 802                 }
 803                 } break;
 804
 805         case LDAP_OPT_X_SASL_SSF_MIN:
 806                 ld->ld_options.ldo_sasl_secprops.min_ssf = *(ber_len_t *)arg;
 807                 break;
 808         case LDAP_OPT_X_SASL_SSF_MAX:
 809                 ld->ld_options.ldo_sasl_secprops.max_ssf = *(ber_len_t *)arg;
 810                 break;
 811         case LDAP_OPT_X_SASL_MAXBUFSIZE:
 812                 ld->ld_options.ldo_sasl_secprops.maxbufsize = *(ber_len_t *)arg;
 813                 break;
 814
 815         case LDAP_OPT_X_SASL_SECPROPS: {
 816                 int sc;
 817                 sc = ldap_pvt_sasl_secprops( (char *) arg,
 818                         &ld->ld_options.ldo_sasl_secprops );
 819
 820                 return sc == LDAP_SUCCESS ? 0 : -1;
 821                 }
 822
 823         default:
 824                 return -1;
 825         }
 826         return 0;
 827 }
 828
 829 #ifdef LDAP_R_COMPILE
 830 void *ldap_pvt_sasl_mutex_new(void)
 831 {
 832         ldap_pvt_thread_mutex_t *mutex;
 833
 834         mutex = (ldap_pvt_thread_mutex_t *) LDAP_MALLOC(
 835                 sizeof(ldap_pvt_thread_mutex_t) );
 836
 837         if ( ldap_pvt_thread_mutex_init( mutex ) == 0 ) {
 838                 return mutex;
 839         }
 840         return NULL;
 841 }
 842
 843 int ldap_pvt_sasl_mutex_lock(void *mutex)
 844 {
 845         return ldap_pvt_thread_mutex_lock( (ldap_pvt_thread_mutex_t *)mutex )
 846                 ? SASL_FAIL : SASL_OK;
 847 }
 848
 849 int ldap_pvt_sasl_mutex_unlock(void *mutex)
 850 {
 851         return ldap_pvt_thread_mutex_unlock( (ldap_pvt_thread_mutex_t *)mutex )
 852                 ? SASL_FAIL : SASL_OK;
 853 }
 854
 855 void ldap_pvt_sasl_mutex_dispose(void *mutex)
 856 {
 857         (void) ldap_pvt_thread_mutex_destroy( (ldap_pvt_thread_mutex_t *)mutex );
 858         LDAP_FREE( mutex );
 859 }
 860 #endif
 861
 862 #else
 863 int ldap_int_sasl_init( void )
 864 { return LDAP_SUCCESS; }
 865
 866 int ldap_int_sasl_close( LDAP *ld, LDAPConn *lc )
 867 { return LDAP_SUCCESS; }
 868
 869 int
 870 ldap_int_sasl_bind(
 871         LDAP                    *ld,
 872         const char              *dn,
 873         const char              *mechs,
 874         LDAPControl             **sctrls,
 875         LDAPControl             **cctrls )
 876 { return LDAP_NOT_SUPPORTED; }
 877 #endif /* HAVE_CYRUS_SASL */