git.sur5r.net Git - openldap/blob - servers/slapd/sasl.c

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6
   7 #include "portable.h"
   8
   9 #include <stdio.h>
  10 #include <ac/stdlib.h>
  11 #include <ac/string.h>
  12
  13 #include <lber.h>
  14 #include <ldap_log.h>
  15
  16 #include "slap.h"
  17
  18 #ifdef HAVE_CYRUS_SASL
  19 #include <limits.h>
  20 #include <sasl.h>
  21
  22 #include <ldap_pvt.h>
  23
  24 #ifdef SLAPD_SPASSWD
  25 #include <lutil.h>
  26 #endif
  27
  28 /* Flags for telling slap_sasl_getdn() what type of identity is being passed */
  29 #define FLAG_GETDN_FINAL   1
  30 #define FLAG_GETDN_AUTHCID 2
  31 #define FLAG_GETDN_AUTHZID 4
  32
  33 static sasl_security_properties_t sasl_secprops;
  34
  35 static int
  36 slap_sasl_log(
  37         void *context,
  38         int priority,
  39         const char *message)
  40 {
  41         Connection *conn = context;
  42         int level;
  43         const char * label;
  44
  45         if ( message == NULL ) {
  46                 return SASL_BADPARAM;
  47         }
  48
  49         switch (priority) {
  50         case SASL_LOG_ERR:
  51                 level = LDAP_DEBUG_ANY;
  52                 label = "Error";
  53                 break;
  54         case SASL_LOG_WARNING:
  55                 level = LDAP_DEBUG_TRACE;
  56                 label = "Warning";
  57                 break;
  58         case SASL_LOG_INFO:
  59                 level = LDAP_DEBUG_TRACE;
  60                 label = "Info";
  61                 break;
  62         default:
  63                 return SASL_BADPARAM;
  64         }
  65
  66 #ifdef NEW_LOGGING
  67         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
  68                 "SASL [conn=%ld] %s: %s\n",
  69                 conn ? conn->c_connid : -1,
  70                 label, message ));
  71 #else
  72         Debug( level, "SASL [conn=%ld] %s: %s\n",
  73                 conn ? conn->c_connid: -1,
  74                 label, message );
  75 #endif
  76
  77
  78         return SASL_OK;
  79 }
  80
  81
  82 /* Take any sort of identity string and return a DN with the "dn:" prefix. The
  83    string returned in *dn is in its own allocated memory, and must be free'd
  84    by the calling process.
  85    -Mark Adamson, Carnegie Mellon
  86 */
  87
  88 #define SET_DN  1
  89 #define SET_U   2
  90
  91 static struct berval ext_bv = { sizeof("EXTERNAL")-1, "EXTERNAL" };
  92
  93 int slap_sasl_getdn( Connection *conn, char *id, struct berval *dn, int flags )
  94 {
  95         char *c=NULL, *c1;
  96         int rc, len, is_dn = 0;
  97         sasl_conn_t *ctx;
  98         struct berval dn2;
  99
 100 #ifdef NEW_LOGGING
 101         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 102                 "slap_sasl_getdn: conn %d id=%s\n",
 103                 conn ? conn->c_connid : -1,
 104                 id ? (*id ? id : "<empty>") : "NULL" ));
 105 #else
 106         Debug( LDAP_DEBUG_ARGS, "slap_sasl_getdn: id=%s\n",
 107       id?(*id?id:"<empty>"):"NULL",0,0 );
 108 #endif
 109
 110         dn->bv_val = NULL;
 111         dn->bv_len = 0;
 112
 113         /* Blatantly anonymous ID */
 114         if( id &&
 115                 ( id[sizeof( "anonymous" )-1] == '\0'
 116                         || id[sizeof( "anonymous" )-1] == '@' ) &&
 117                 !strncasecmp( id, "anonymous", sizeof( "anonymous" )-1) ) {
 118                 return( LDAP_SUCCESS );
 119         }
 120         ctx = conn->c_sasl_context;
 121         len = strlen( id );
 122
 123         /* An authcID needs to be converted to authzID form */
 124         if( flags & FLAG_GETDN_AUTHCID ) {
 125                 if( sasl_external_x509dn_convert
 126                         && conn->c_sasl_bind_mech.bv_len == ext_bv.bv_len
 127                         && ( strcasecmp( ext_bv.bv_val, conn->c_sasl_bind_mech.bv_val ) == 0 )
 128                         && id[0] == '/' )
 129                 {
 130                         /* check SASL external for X.509 style DN and */
 131                         /* convert to dn:<dn> form */
 132                         dn->bv_val = ldap_dcedn2dn( id );
 133                         dn->bv_len = strlen(dn->bv_val);
 134                         is_dn = SET_DN;
 135
 136                 } else {
 137                         /* convert to u:<username> form */
 138                         ber_str2bv( id, len, 1, dn );
 139                         is_dn = SET_U;
 140                 }
 141         }
 142         if( !is_dn ) {
 143                 if( !strncasecmp( id, "u:", sizeof("u:")-1 )) {
 144                         is_dn = SET_U;
 145                         ber_str2bv( id+2, len-2, 1, dn );
 146                 } else if ( !strncasecmp( id, "dn:", sizeof("dn:")-1) ) {
 147                         is_dn = SET_DN;
 148                         ber_str2bv( id+3, len-3, 1, dn );
 149                 }
 150         }
 151
 152         /* An authzID must be properly prefixed */
 153         if( (flags & FLAG_GETDN_AUTHZID) && !is_dn ) {
 154                 free( dn->bv_val );
 155                 dn->bv_val = NULL;
 156                 dn->bv_len = 0;
 157                 return( LDAP_INAPPROPRIATE_AUTH );
 158         }
 159
 160         /* Username strings */
 161         if( is_dn == SET_U ) {
 162                 char *p;
 163                 len = dn->bv_len + sizeof("uid=")-1 + sizeof(",cn=auth")-1;
 164
 165                 /* Figure out how much data we have for the dn */
 166                 rc = sasl_getprop( ctx, SASL_REALM, (void **)&c );
 167                 if( rc != SASL_OK && rc != SASL_NOTDONE ) {
 168 #ifdef NEW_LOGGING
 169                         LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
 170                                 "slap_sasl_getdn: getprop(REALM) failed.\n" ));
 171 #else
 172                         Debug(LDAP_DEBUG_TRACE,
 173                                 "getdn: getprop(REALM) failed!\n", 0,0,0);
 174 #endif
 175
 176                         ch_free( dn->bv_val );
 177                         *dn = slap_empty_bv;
 178                         return( LDAP_OPERATIONS_ERROR );
 179                 }
 180
 181                 if( c && *c ) {
 182                         len += strlen( c ) + sizeof(",cn=")-1;
 183                 }
 184
 185                 if( conn->c_sasl_bind_mech.bv_len ) {
 186                         len += conn->c_sasl_bind_mech.bv_len + sizeof(",cn=")-1;
 187                 }
 188
 189                 /* Build the new dn */
 190                 c1 = dn->bv_val;
 191                 dn->bv_val = ch_malloc( len );
 192                 p = slap_strcopy( dn->bv_val, "uid=" );
 193                 p = slap_strcopy( p, c1 );
 194                 ch_free( c1 );
 195
 196                 if( c ) {
 197                         p = slap_strcopy( p, ",cn=" );
 198                         p = slap_strcopy( p, c );
 199                 }
 200                 if( conn->c_sasl_bind_mech.bv_len ) {
 201                         p = slap_strcopy( p, ",cn=" );
 202                         p = slap_strcopy( p, conn->c_sasl_bind_mech.bv_val );
 203                 }
 204                 p = slap_strcopy( p, ",cn=auth" );
 205                 dn->bv_len = p - dn->bv_val;
 206                 is_dn = SET_DN;
 207
 208 #ifdef NEW_LOGGING
 209                 LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 210                         "slap_sasl_getdn: u:id converted to %s.\n", dn->bv_val ));
 211 #else
 212                 Debug( LDAP_DEBUG_TRACE, "getdn: u:id converted to %s\n", dn->bv_val,0,0 );
 213 #endif
 214         }
 215
 216         /* DN strings that are a cn=auth identity to run through regexp */
 217         if( is_dn == SET_DN && ( ( flags & FLAG_GETDN_FINAL ) == 0 ) )
 218         {
 219                 slap_sasl2dn( dn, &dn2 );
 220                 if( dn2.bv_val ) {
 221                         ch_free( dn->bv_val );
 222                         *dn = dn2;
 223 #ifdef NEW_LOGGING
 224                         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 225                                 "slap_sasl_getdn: dn:id converted to %s.\n", dn->bv_val ));
 226 #else
 227                         Debug( LDAP_DEBUG_TRACE, "getdn: dn:id converted to %s\n",
 228                                 dn->bv_val, 0, 0 );
 229 #endif
 230                 }
 231         }
 232
 233         if( flags & FLAG_GETDN_FINAL ) {
 234                 /* omit "dn:" prefix */
 235                 is_dn = 0;
 236         } else {
 237                 rc = dnNormalize2( NULL, dn, &dn2 );
 238                 free(dn->bv_val);
 239                 if ( rc != LDAP_SUCCESS ) {
 240                         *dn = slap_empty_bv;
 241                         return rc;
 242                 }
 243                 *dn = dn2;
 244         }
 245
 246         /* Attach the "dn:" prefix if needed */
 247         if ( is_dn == SET_DN ) {
 248                 c1 = ch_malloc( dn->bv_len + sizeof("dn:") );
 249                 strcpy( c1, "dn:" );
 250                 strcpy( c1 + 3, dn->bv_val );
 251                 free( dn->bv_val );
 252                 dn->bv_val = c1;
 253                 dn->bv_len += 3;
 254         }
 255
 256         return( LDAP_SUCCESS );
 257 }
 258
 259
 260
 261 static int
 262 slap_sasl_authorize(
 263         void *context,
 264         const char *authcid,
 265         const char *authzid,
 266         const char **user,
 267         const char **errstr)
 268 {
 269         struct berval authcDN, authzDN;
 270         int rc;
 271         Connection *conn = context;
 272
 273         *user = NULL;
 274
 275 #ifdef NEW_LOGGING
 276         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 277                    "slap_sas_authorize: conn %d  authcid=\"%s\" authzid=\"%s\"\n",
 278                    conn ? conn->c_connid : -1,
 279                    authcid ? authcid : "<empty>",
 280                    authzid ? authzid : "<empty>" ));
 281 #else
 282         Debug( LDAP_DEBUG_ARGS, "SASL Authorize [conn=%ld]: "
 283                 "authcid=\"%s\" authzid=\"%s\"\n",
 284                 (long) (conn ? conn->c_connid : -1),
 285                 authcid ? authcid : "<empty>",
 286                 authzid ? authzid : "<empty>" );
 287 #endif
 288
 289
 290         /* Convert the identities to DN's. If no authzid was given, client will
 291            be bound as the DN matching their username */
 292         rc = slap_sasl_getdn( conn, (char *)authcid, &authcDN, FLAG_GETDN_AUTHCID );
 293         if( rc != LDAP_SUCCESS ) {
 294                 *errstr = ldap_err2string( rc );
 295                 return SASL_NOAUTHZ;
 296         }
 297         if( ( authzid == NULL ) || !strcmp( authcid,authzid ) ) {
 298 #ifdef NEW_LOGGING
 299                 LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 300                            "slap_sasl_authorize: conn %d  Using authcDN=%s\n",
 301                            conn ? conn->c_connid : -1, authcDN.bv_val ));
 302 #else
 303                 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
 304                  "Using authcDN=%s\n", (long) (conn ? conn->c_connid : -1), authcDN.bv_val,0 );
 305 #endif
 306
 307                 *user = authcDN.bv_val;
 308                 *errstr = NULL;
 309                 return SASL_OK;
 310         }
 311         rc = slap_sasl_getdn( conn, (char *)authzid, &authzDN, FLAG_GETDN_AUTHZID );
 312         if( rc != LDAP_SUCCESS ) {
 313                 ch_free( authcDN.bv_val );
 314                 *errstr = ldap_err2string( rc );
 315                 return SASL_NOAUTHZ;
 316         }
 317
 318         rc = slap_sasl_authorized( &authcDN, &authzDN );
 319         if( rc ) {
 320 #ifdef NEW_LOGGING
 321                 LDAP_LOG(( "sasl", LDAP_LEVEL_INFO,
 322                            "slap_sasl_authorize: conn %ld  authorization disallowed (%d)\n",
 323                            (long)(conn ? conn->c_connid : -1), rc ));
 324 #else
 325                 Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
 326                         " authorization disallowed (%d)\n",
 327                         (long) (conn ? conn->c_connid : -1), rc, 0 );
 328 #endif
 329
 330                 *errstr = "not authorized";
 331                 ch_free( authcDN.bv_val );
 332                 ch_free( authzDN.bv_val );
 333                 return SASL_NOAUTHZ;
 334         }
 335
 336 #ifdef NEW_LOGGING
 337         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 338                    "slap_sasl_authorize: conn %d authorization allowed\n",
 339                    (long)(conn ? conn->c_connid : -1 ) ));
 340 #else
 341         Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
 342                 " authorization allowed\n",
 343                 (long) (conn ? conn->c_connid : -1), 0, 0 );
 344 #endif
 345
 346
 347         ch_free( authcDN.bv_val );
 348         *user = authzDN.bv_val;
 349         *errstr = NULL;
 350         return SASL_OK;
 351 }
 352
 353
 354 static int
 355 slap_sasl_err2ldap( int saslerr )
 356 {
 357         int rc;
 358
 359         switch (saslerr) {
 360                 case SASL_CONTINUE:
 361                         rc = LDAP_SASL_BIND_IN_PROGRESS;
 362                         break;
 363                 case SASL_FAIL:
 364                         rc = LDAP_OTHER;
 365                         break;
 366                 case SASL_NOMEM:
 367                         rc = LDAP_OTHER;
 368                         break;
 369                 case SASL_NOMECH:
 370                         rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
 371                         break;
 372                 case SASL_BADAUTH:
 373                         rc = LDAP_INVALID_CREDENTIALS;
 374                         break;
 375                 case SASL_NOAUTHZ:
 376                         rc = LDAP_INSUFFICIENT_ACCESS;
 377                         break;
 378                 case SASL_TOOWEAK:
 379                 case SASL_ENCRYPT:
 380                         rc = LDAP_INAPPROPRIATE_AUTH;
 381                         break;
 382                 default:
 383                         rc = LDAP_OTHER;
 384                         break;
 385         }
 386
 387         return rc;
 388 }
 389 #endif
 390
 391
 392 int slap_sasl_init( void )
 393 {
 394 #ifdef HAVE_CYRUS_SASL
 395         int rc;
 396         static sasl_callback_t server_callbacks[] = {
 397                 { SASL_CB_LOG, &slap_sasl_log, NULL },
 398                 { SASL_CB_LIST_END, NULL, NULL }
 399         };
 400
 401         sasl_set_alloc(
 402                 ch_malloc,
 403                 ch_calloc,
 404                 ch_realloc,
 405                 ch_free );
 406
 407         sasl_set_mutex(
 408                 ldap_pvt_sasl_mutex_new,
 409                 ldap_pvt_sasl_mutex_lock,
 410                 ldap_pvt_sasl_mutex_unlock,
 411                 ldap_pvt_sasl_mutex_dispose );
 412
 413         /* should provide callbacks for logging */
 414         /* server name should be configurable */
 415         rc = sasl_server_init( server_callbacks, "slapd" );
 416
 417         if( rc != SASL_OK ) {
 418 #ifdef NEW_LOGGING
 419                 LDAP_LOG(( "sasl", LDAP_LEVEL_INFO,
 420                            "slap_sasl_init: init failed.\n" ));
 421 #else
 422                 Debug( LDAP_DEBUG_ANY, "sasl_server_init failed\n",
 423                         0, 0, 0 );
 424 #endif
 425
 426                 return -1;
 427         }
 428
 429 #ifdef NEW_LOGGING
 430         LDAP_LOG(( "sasl", LDAP_LEVEL_INFO,
 431                    "slap_sasl_init: initialized!\n"));
 432 #else
 433         Debug( LDAP_DEBUG_TRACE, "slap_sasl_init: initialized!\n",
 434                 0, 0, 0 );
 435 #endif
 436
 437
 438         /* default security properties */
 439         memset( &sasl_secprops, '\0', sizeof(sasl_secprops) );
 440     sasl_secprops.max_ssf = INT_MAX;
 441     sasl_secprops.maxbufsize = 65536;
 442     sasl_secprops.security_flags = SASL_SEC_NOPLAINTEXT|SASL_SEC_NOANONYMOUS;
 443 #endif
 444
 445         return 0;
 446 }
 447
 448 int slap_sasl_destroy( void )
 449 {
 450 #ifdef HAVE_CYRUS_SASL
 451         sasl_done();
 452 #endif
 453         free( global_host );
 454         global_host = NULL;
 455
 456         return 0;
 457 }
 458
 459 int slap_sasl_open( Connection *conn )
 460 {
 461         int sc = LDAP_SUCCESS;
 462
 463 #ifdef HAVE_CYRUS_SASL
 464         sasl_conn_t *ctx = NULL;
 465         sasl_callback_t *session_callbacks;
 466
 467         assert( conn->c_sasl_context == NULL );
 468         assert( conn->c_sasl_extra == NULL );
 469
 470         conn->c_sasl_layers = 0;
 471
 472         session_callbacks =
 473                 ch_calloc( 3, sizeof(sasl_callback_t));
 474         conn->c_sasl_extra = session_callbacks;
 475
 476         session_callbacks[0].id = SASL_CB_LOG;
 477         session_callbacks[0].proc = &slap_sasl_log;
 478         session_callbacks[0].context = conn;
 479
 480         session_callbacks[1].id = SASL_CB_PROXY_POLICY;
 481         session_callbacks[1].proc = &slap_sasl_authorize;
 482         session_callbacks[1].context = conn;
 483
 484         session_callbacks[2].id = SASL_CB_LIST_END;
 485         session_callbacks[2].proc = NULL;
 486         session_callbacks[2].context = NULL;
 487
 488         if( global_host == NULL ) {
 489                 global_host = ldap_pvt_get_fqdn( NULL );
 490         }
 491
 492         /* create new SASL context */
 493         sc = sasl_server_new( "ldap", global_host, global_realm,
 494                 session_callbacks, SASL_SECURITY_LAYER, &ctx );
 495
 496         if( sc != SASL_OK ) {
 497 #ifdef NEW_LOGGING
 498                 LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
 499                            "slap_sasl_open: sasl_server_new failed: %d\n", sc ));
 500 #else
 501                 Debug( LDAP_DEBUG_ANY, "sasl_server_new failed: %d\n",
 502                         sc, 0, 0 );
 503 #endif
 504
 505                 return -1;
 506         }
 507
 508         conn->c_sasl_context = ctx;
 509
 510         if( sc == SASL_OK ) {
 511                 sc = sasl_setprop( ctx,
 512                         SASL_SEC_PROPS, &sasl_secprops );
 513
 514                 if( sc != SASL_OK ) {
 515 #ifdef NEW_LOGGING
 516                         LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
 517                                    "slap_sasl_open: sasl_setprop failed: %d \n", sc ));
 518 #else
 519                         Debug( LDAP_DEBUG_ANY, "sasl_setprop failed: %d\n",
 520                                 sc, 0, 0 );
 521 #endif
 522
 523                         slap_sasl_close( conn );
 524                         return -1;
 525                 }
 526         }
 527
 528         sc = slap_sasl_err2ldap( sc );
 529 #endif
 530         return sc;
 531 }
 532
 533 int slap_sasl_external(
 534         Connection *conn,
 535         slap_ssf_t ssf,
 536         const char *auth_id )
 537 {
 538 #ifdef HAVE_CYRUS_SASL
 539         int sc;
 540         sasl_conn_t *ctx = conn->c_sasl_context;
 541         sasl_external_properties_t extprops;
 542
 543         if ( ctx == NULL ) {
 544                 return LDAP_UNAVAILABLE;
 545         }
 546
 547         memset( &extprops, '\0', sizeof(extprops) );
 548         extprops.ssf = ssf;
 549         extprops.auth_id = (char *) auth_id;
 550
 551         sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
 552                 (void *) &extprops );
 553
 554         if ( sc != SASL_OK ) {
 555                 return LDAP_OTHER;
 556         }
 557 #endif
 558
 559         return LDAP_SUCCESS;
 560 }
 561
 562 int slap_sasl_reset( Connection *conn )
 563 {
 564 #ifdef HAVE_CYRUS_SASL
 565         sasl_conn_t *ctx = conn->c_sasl_context;
 566
 567         if( ctx != NULL ) {
 568         }
 569 #endif
 570         /* must return "anonymous" */
 571         return LDAP_SUCCESS;
 572 }
 573
 574 char ** slap_sasl_mechs( Connection *conn )
 575 {
 576         char **mechs = NULL;
 577
 578 #ifdef HAVE_CYRUS_SASL
 579         sasl_conn_t *ctx = conn->c_sasl_context;
 580
 581         if( ctx != NULL ) {
 582                 int sc;
 583                 char *mechstr;
 584
 585                 sc = sasl_listmech( ctx,
 586                         NULL, NULL, ",", NULL,
 587                         &mechstr, NULL, NULL );
 588
 589                 if( sc != SASL_OK ) {
 590 #ifdef NEW_LOGGING
 591                         LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
 592                                 "slap_sasl_mechs: sasl_listmech failed: %d\n", sc ));
 593 #else
 594                         Debug( LDAP_DEBUG_ANY, "slap_sasl_listmech failed: %d\n",
 595                                 sc, 0, 0 );
 596 #endif
 597
 598                         return NULL;
 599                 }
 600
 601                 mechs = str2charray( mechstr, "," );
 602
 603                 ch_free( mechstr );
 604         }
 605 #endif
 606
 607         return mechs;
 608 }
 609
 610 int slap_sasl_close( Connection *conn )
 611 {
 612 #ifdef HAVE_CYRUS_SASL
 613         sasl_conn_t *ctx = conn->c_sasl_context;
 614
 615         if( ctx != NULL ) {
 616                 sasl_dispose( &ctx );
 617         }
 618
 619         conn->c_sasl_context = NULL;
 620
 621         free( conn->c_sasl_extra );
 622         conn->c_sasl_extra = NULL;
 623 #endif
 624
 625         return LDAP_SUCCESS;
 626 }
 627
 628 int slap_sasl_bind(
 629     Connection          *conn,
 630     Operation           *op,
 631     struct berval       *dn,
 632     struct berval       *ndn,
 633     struct berval       *cred,
 634         struct berval                   *edn,
 635         slap_ssf_t              *ssfp )
 636 {
 637         int rc = 1;
 638
 639 #ifdef HAVE_CYRUS_SASL
 640         sasl_conn_t *ctx = conn->c_sasl_context;
 641         struct berval response;
 642         unsigned reslen = 0;
 643         const char *errstr;
 644         int sc;
 645
 646 #ifdef NEW_LOGGING
 647         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 648                 "sasl_bind: conn %ld dn=\"%s\" mech=%s datalen=%ld\n",
 649                 conn->c_connid,
 650                 dn->bv_len ? dn->bv_val : "",
 651                 conn->c_sasl_bind_in_progress ? "<continuing>" : conn->c_sasl_bind_mech.bv_val,
 652                 cred ? cred->bv_len : 0 ));
 653 #else
 654         Debug(LDAP_DEBUG_ARGS,
 655                 "==> sasl_bind: dn=\"%s\" mech=%s datalen=%ld\n",
 656                 dn->bv_len ? dn->bv_val : "",
 657                 conn->c_sasl_bind_in_progress ? "<continuing>":conn->c_sasl_bind_mech.bv_val,
 658                 cred ? cred->bv_len : 0 );
 659 #endif
 660
 661
 662         if( ctx == NULL ) {
 663                 send_ldap_result( conn, op, LDAP_UNAVAILABLE,
 664                         NULL, "SASL unavailable on this session", NULL, NULL );
 665                 return rc;
 666         }
 667
 668         if ( !conn->c_sasl_bind_in_progress ) {
 669                 sc = sasl_server_start( ctx,
 670                         conn->c_sasl_bind_mech.bv_val,
 671                         cred->bv_len ? cred->bv_val : "",
 672                         cred->bv_len,
 673                         (char **)&response.bv_val, &reslen, &errstr );
 674
 675         } else {
 676                 sc = sasl_server_step( ctx,
 677                         cred->bv_val, cred->bv_len,
 678                         (char **)&response.bv_val, &reslen, &errstr );
 679         }
 680
 681         response.bv_len = reslen;
 682
 683         if ( sc == SASL_OK ) {
 684                 char *username = NULL;
 685
 686                 sc = sasl_getprop( ctx,
 687                         SASL_USERNAME, (void **)&username );
 688
 689                 if ( sc != SASL_OK ) {
 690 #ifdef NEW_LOGGING
 691                         LDAP_LOG(( "sasl", LDAP_LEVEL_ERR,
 692                                 "slap_sasl_bind: getprop(USERNAME) failed: %d\n", sc ));
 693 #else
 694                         Debug(LDAP_DEBUG_TRACE,
 695                                 "slap_sasl_bind: getprop(USERNAME) failed!\n",
 696                                 0, 0, 0);
 697 #endif
 698
 699
 700                         send_ldap_result( conn, op, rc = slap_sasl_err2ldap( sc ),
 701                                 NULL, "no SASL username", NULL, NULL );
 702
 703                 } else {
 704                         rc = slap_sasl_getdn( conn, username, edn, FLAG_GETDN_FINAL );
 705
 706                         if( rc == LDAP_SUCCESS ) {
 707                                 int i;
 708                                 sasl_ssf_t *ssf = NULL;
 709                                 (void) sasl_getprop( ctx, SASL_SSF, (void *)&ssf );
 710                                 *ssfp = ssf ? *ssf : 0;
 711
 712                                 if( *ssfp ) {
 713                                         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 714                                         conn->c_sasl_layers++;
 715                                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 716                                 }
 717
 718                                 send_ldap_sasl( conn, op, rc,
 719                                         NULL, NULL, NULL, NULL,
 720                                         response.bv_len ? &response : NULL );
 721
 722                         } else {
 723                                 send_ldap_result( conn, op, rc,
 724                                         NULL, errstr, NULL, NULL );
 725                         }
 726                 }
 727
 728         } else if ( sc == SASL_CONTINUE ) {
 729                 send_ldap_sasl( conn, op, rc = LDAP_SASL_BIND_IN_PROGRESS,
 730                         NULL, NULL, NULL, NULL, &response );
 731
 732         } else {
 733                 send_ldap_result( conn, op, rc = slap_sasl_err2ldap( sc ),
 734                         NULL, errstr, NULL, NULL );
 735         }
 736
 737         if( response.bv_len ) {
 738                 ch_free( response.bv_val );
 739         }
 740
 741 #ifdef NEW_LOGGING
 742         LDAP_LOG(( "sasl", LDAP_LEVEL_ENTRY,
 743                 "slap_sasl_bind: rc=%d\n", rc ));
 744 #else
 745         Debug(LDAP_DEBUG_TRACE, "<== slap_sasl_bind: rc=%d\n", rc, 0, 0);
 746 #endif
 747
 748
 749 #else
 750         send_ldap_result( conn, op, rc = LDAP_UNAVAILABLE,
 751                 NULL, "SASL not supported", NULL, NULL );
 752 #endif
 753
 754         return rc;
 755 }
 756
 757 char* slap_sasl_secprops( const char *in )
 758 {
 759 #ifdef HAVE_CYRUS_SASL
 760         int rc = ldap_pvt_sasl_secprops( in, &sasl_secprops );
 761
 762         return rc == LDAP_SUCCESS ? NULL : "Invalid security properties";
 763 #else
 764         return "SASL not supported";
 765 #endif
 766 }