+ *errstr = "Could not extract realm";
+ return SASL_NOAUTHZ;
+ }
+
+ /* Convert the identities to DN's. If no authzid was given, client will
+ be bound as the DN matching their username */
+ rc = slap_sasl_getdn( conn, NULL, (char *)authcid, 0, realm,
+ &authcDN, SLAP_GETDN_AUTHCID );
+ if( rc != LDAP_SUCCESS ) {
+ *errstr = ldap_err2string( rc );
+ return SASL_NOAUTHZ;
+ }
+ if( ( authzid == NULL ) || !strcmp( authcid,authzid ) ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl_authorize: conn %d Using authcDN=%s\n",
+ conn ? conn->c_connid : -1, authcDN.bv_val, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
+ "Using authcDN=%s\n", (long) (conn ? conn->c_connid : -1), authcDN.bv_val,0 );
+#endif
+
+ conn->c_sasl_dn = authcDN;
+ goto ok;
+ }
+ rc = slap_sasl_getdn( conn, NULL, (char *)authzid, 0, realm,
+ &authzDN, SLAP_GETDN_AUTHZID );
+ if( rc != LDAP_SUCCESS ) {
+ ch_free( authcDN.bv_val );
+ *errstr = ldap_err2string( rc );
+ return SASL_NOAUTHZ;
+ }
+
+ rc = slap_sasl_authorized(conn->c_sasl_bindop, &authcDN, &authzDN );
+ ch_free( authcDN.bv_val );
+ if( rc ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, INFO,
+ "slap_sasl_authorize: conn %ld "
+ "proxy authorization disallowed (%d)\n",
+ (long)(conn ? conn->c_connid : -1), rc, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
+ "proxy authorization disallowed (%d)\n",
+ (long) (conn ? conn->c_connid : -1), rc, 0 );
+#endif
+
+ *errstr = "not authorized";
+ ch_free( authzDN.bv_val );
+ return SASL_NOAUTHZ;
+ }
+ conn->c_sasl_dn = authzDN;
+
+ok:
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, RESULTS,
+ "slap_sasl_authorize: conn %d proxy authorization allowed\n",
+ (long)(conn ? conn->c_connid : -1 ), 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "SASL Authorize [conn=%ld]: "
+ " authorization allowed\n",
+ (long) (conn ? conn->c_connid : -1), 0, 0 );
+#endif
+
+ if (conn->c_sasl_bindop) {
+ Statslog( LDAP_DEBUG_STATS,
+ "conn=%lu op=%lu BIND authcid=\"%s\"\n",
+ conn->c_connid, conn->c_sasl_bindop->o_opid,
+ authcid, 0, 0);
+ }
+
+ *errstr = NULL;
+ return SASL_OK;
+}
+#endif /* SASL_VERSION_MAJOR >= 2 */
+
+static int
+slap_sasl_err2ldap( int saslerr )
+{
+ int rc;
+
+ switch (saslerr) {
+ case SASL_OK:
+ rc = LDAP_SUCCESS;
+ break;
+ case SASL_CONTINUE:
+ rc = LDAP_SASL_BIND_IN_PROGRESS;
+ break;
+ case SASL_FAIL:
+ rc = LDAP_OTHER;
+ break;
+ case SASL_NOMEM:
+ rc = LDAP_OTHER;
+ break;
+ case SASL_NOMECH:
+ rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
+ break;
+ case SASL_BADAUTH:
+ rc = LDAP_INVALID_CREDENTIALS;
+ break;
+ case SASL_NOAUTHZ:
+ rc = LDAP_INSUFFICIENT_ACCESS;
+ break;
+ case SASL_TOOWEAK:
+ case SASL_ENCRYPT:
+ rc = LDAP_INAPPROPRIATE_AUTH;
+ break;
+ default:
+ rc = LDAP_OTHER;
+ break;
+ }
+
+ return rc;
+}
+#endif
+
+int slap_sasl_init( void )
+{
+#ifdef HAVE_CYRUS_SASL
+ int rc;
+ static sasl_callback_t server_callbacks[] = {
+ { SASL_CB_LOG, &slap_sasl_log, NULL },
+ { SASL_CB_LIST_END, NULL, NULL }
+ };
+
+#ifdef HAVE_SASL_VERSION
+ /* stringify the version number, sasl.h doesn't do it for us */
+#define VSTR0(maj, min, pat) #maj "." #min "." #pat
+#define VSTR(maj, min, pat) VSTR0(maj, min, pat)
+#define SASL_VERSION_STRING VSTR(SASL_VERSION_MAJOR, SASL_VERSION_MINOR, \
+ SASL_VERSION_STEP)
+
+ sasl_version( NULL, &rc );
+ if ( ((rc >> 16) != ((SASL_VERSION_MAJOR << 8)|SASL_VERSION_MINOR)) ||
+ (rc & 0xffff) < SASL_VERSION_STEP)
+ {
+ char version[sizeof("xxx.xxx.xxxxx")];
+ sprintf( version, "%u.%d.%d", (unsigned)rc >> 24, (rc >> 16) & 0xff,
+ rc & 0xffff );
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, INFO,
+ "slap_sasl_init: SASL library version mismatch:"
+ " expected " SASL_VERSION_STRING ","
+ " got %s\n", version, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "slap_sasl_init: SASL library version mismatch:"
+ " expected " SASL_VERSION_STRING ","
+ " got %s\n", version, 0, 0 );
+#endif
+ return -1;
+ }
+#endif
+
+ /* SASL 2 does its own memory management internally */
+#if SASL_VERSION_MAJOR < 2
+ sasl_set_alloc(
+ ber_memalloc,
+ ber_memcalloc,
+ ber_memrealloc,
+ ber_memfree );
+#endif
+
+ sasl_set_mutex(
+ ldap_pvt_sasl_mutex_new,
+ ldap_pvt_sasl_mutex_lock,
+ ldap_pvt_sasl_mutex_unlock,
+ ldap_pvt_sasl_mutex_dispose );
+
+#if SASL_VERSION_MAJOR >= 2
+ generic_filter.f_desc = slap_schema.si_ad_objectClass;
+
+ sasl_auxprop_add_plugin( "slapd", slap_auxprop_init );
+#endif
+ /* should provide callbacks for logging */
+ /* server name should be configurable */
+ rc = sasl_server_init( server_callbacks, "slapd" );
+
+ if( rc != SASL_OK ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, INFO, "slap_sasl_init: init failed.\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY, "sasl_server_init failed\n",
+ 0, 0, 0 );
+#endif
+#if SASL_VERSION_MAJOR < 2
+ /* A no-op used to make sure we linked with Cyrus 1.5 */
+ sasl_client_auth( NULL, NULL, NULL, 0, NULL, NULL );
+#endif
+
+ return -1;
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, INFO, "slap_sasl_init: initialized!\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_sasl_init: initialized!\n",
+ 0, 0, 0 );
+#endif
+
+ /* default security properties */
+ memset( &sasl_secprops, '\0', sizeof(sasl_secprops) );
+ sasl_secprops.max_ssf = INT_MAX;
+ sasl_secprops.maxbufsize = 65536;
+ sasl_secprops.security_flags = SASL_SEC_NOPLAINTEXT|SASL_SEC_NOANONYMOUS;
+#endif
+
+ return 0;
+}
+
+int slap_sasl_destroy( void )
+{
+#ifdef HAVE_CYRUS_SASL
+ sasl_done();
+#endif
+ free( global_host );
+ global_host = NULL;
+
+ return 0;
+}
+
+int slap_sasl_open( Connection *conn, int reopen )
+{
+ int sc = LDAP_SUCCESS;
+#ifdef HAVE_CYRUS_SASL
+ int cb;
+
+ sasl_conn_t *ctx = NULL;
+ sasl_callback_t *session_callbacks;
+
+#if SASL_VERSION_MAJOR >= 2
+ char *ipremoteport = NULL, *iplocalport = NULL;
+#endif
+
+ assert( conn->c_sasl_authctx == NULL );
+
+ if ( !reopen ) {
+ assert( conn->c_sasl_extra == NULL );
+
+ session_callbacks =
+#if SASL_VERSION_MAJOR >= 2
+ SLAP_CALLOC( 5, sizeof(sasl_callback_t));
+#else
+ SLAP_CALLOC( 3, sizeof(sasl_callback_t));
+#endif
+ if( session_callbacks == NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ERR,
+ "slap_sasl_open: SLAP_MALLOC failed", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "slap_sasl_open: SLAP_MALLOC failed", 0, 0, 0 );
+#endif
+ return -1;
+ }
+ conn->c_sasl_extra = session_callbacks;
+
+ session_callbacks[cb=0].id = SASL_CB_LOG;
+ session_callbacks[cb].proc = &slap_sasl_log;
+ session_callbacks[cb++].context = conn;
+
+ session_callbacks[cb].id = SASL_CB_PROXY_POLICY;
+ session_callbacks[cb].proc = &slap_sasl_authorize;
+ session_callbacks[cb++].context = conn;
+
+#if SASL_VERSION_MAJOR >= 2
+ session_callbacks[cb].id = SASL_CB_CANON_USER;
+ session_callbacks[cb].proc = &slap_sasl_canonicalize;
+ session_callbacks[cb++].context = conn;
+
+ /* XXXX: this should be conditional */
+ session_callbacks[cb].id = SASL_CB_SERVER_USERDB_CHECKPASS;
+ session_callbacks[cb].proc = &slap_sasl_checkpass;
+ session_callbacks[cb++].context = conn;
+#endif
+
+ session_callbacks[cb].id = SASL_CB_LIST_END;
+ session_callbacks[cb].proc = NULL;
+ session_callbacks[cb++].context = NULL;
+ } else {
+ session_callbacks = conn->c_sasl_extra;
+ }
+
+ conn->c_sasl_layers = 0;
+
+ if( global_host == NULL ) {
+ global_host = ldap_pvt_get_fqdn( NULL );
+ }
+
+ /* create new SASL context */
+#if SASL_VERSION_MAJOR >= 2
+ if ( conn->c_sock_name.bv_len != 0 &&
+ strncmp( conn->c_sock_name.bv_val, "IP=", 3 ) == 0) {
+ char *p;
+
+ iplocalport = ch_strdup( conn->c_sock_name.bv_val + 3 );
+ /* Convert IPv6 addresses to address;port syntax. */
+ p = strrchr( iplocalport, ' ' );
+ /* Convert IPv4 addresses to address;port syntax. */
+ if ( p == NULL ) p = strchr( iplocalport, ':' );
+ if ( p != NULL ) {
+ *p = ';';
+ }
+ }
+ if ( conn->c_peer_name.bv_len != 0 &&
+ strncmp( conn->c_peer_name.bv_val, "IP=", 3 ) == 0) {
+ char *p;
+
+ ipremoteport = ch_strdup( conn->c_peer_name.bv_val + 3 );
+ /* Convert IPv6 addresses to address;port syntax. */
+ p = strrchr( ipremoteport, ' ' );
+ /* Convert IPv4 addresses to address;port syntax. */
+ if ( p == NULL ) p = strchr( ipremoteport, ':' );
+ if ( p != NULL ) {
+ *p = ';';
+ }
+ }
+ sc = sasl_server_new( "ldap", global_host, global_realm,
+ iplocalport, ipremoteport, session_callbacks, SASL_SUCCESS_DATA, &ctx );
+ if ( iplocalport != NULL ) {
+ ch_free( iplocalport );
+ }
+ if ( ipremoteport != NULL ) {
+ ch_free( ipremoteport );
+ }
+#else
+ sc = sasl_server_new( "ldap", global_host, global_realm,
+ session_callbacks, SASL_SECURITY_LAYER, &ctx );
+#endif
+
+ if( sc != SASL_OK ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ERR,
+ "slap_sasl_open: sasl_server_new failed: %d\n", sc, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY, "sasl_server_new failed: %d\n",
+ sc, 0, 0 );
+#endif
+
+ return -1;
+ }
+
+ conn->c_sasl_authctx = ctx;
+
+ if( sc == SASL_OK ) {
+ sc = sasl_setprop( ctx,
+ SASL_SEC_PROPS, &sasl_secprops );
+
+ if( sc != SASL_OK ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ERR,
+ "slap_sasl_open: sasl_setprop failed: %d \n", sc, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY, "sasl_setprop failed: %d\n",
+ sc, 0, 0 );
+#endif
+
+ slap_sasl_close( conn );
+ return -1;
+ }
+ }
+
+ sc = slap_sasl_err2ldap( sc );
+
+#elif defined(SLAP_BUILTIN_SASL)
+ /* built-in SASL implementation */
+ SASL_CTX *ctx = (SASL_CTX *) SLAP_MALLOC(sizeof(SASL_CTX));
+ if( ctx == NULL ) return -1;
+
+ ctx->sc_external_ssf = 0;
+ ctx->sc_external_id.bv_len = 0;
+ ctx->sc_external_id.bv_val = NULL;
+
+ conn->c_sasl_authctx = ctx;
+#endif
+
+ return sc;
+}
+
+int slap_sasl_external(
+ Connection *conn,
+ slap_ssf_t ssf,
+ struct berval *auth_id )
+{
+#if SASL_VERSION_MAJOR >= 2
+ int sc;
+ sasl_conn_t *ctx = conn->c_sasl_authctx;
+
+ if ( ctx == NULL ) {
+ return LDAP_UNAVAILABLE;
+ }
+
+ sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL, &ssf );
+
+ if ( sc != SASL_OK ) {
+ return LDAP_OTHER;
+ }
+
+ sc = sasl_setprop( ctx, SASL_AUTH_EXTERNAL,
+ auth_id ? auth_id->bv_val : NULL );
+
+ if ( sc != SASL_OK ) {
+ return LDAP_OTHER;
+ }
+
+#elif defined(HAVE_CYRUS_SASL)
+ int sc;
+ sasl_conn_t *ctx = conn->c_sasl_authctx;
+ sasl_external_properties_t extprops;
+
+ if ( ctx == NULL ) {
+ return LDAP_UNAVAILABLE;
+ }
+
+ memset( &extprops, '\0', sizeof(extprops) );
+ extprops.ssf = ssf;
+ extprops.auth_id = auth_id ? auth_id->bv_val : NULL;
+
+ sc = sasl_setprop( ctx, SASL_SSF_EXTERNAL,
+ (void *) &extprops );
+
+ if ( sc != SASL_OK ) {
+ return LDAP_OTHER;
+ }
+#elif defined(SLAP_BUILTIN_SASL)
+ /* built-in SASL implementation */
+ SASL_CTX *ctx = conn->c_sasl_authctx;
+ if ( ctx == NULL ) return LDAP_UNAVAILABLE;
+
+ ctx->sc_external_ssf = ssf;
+ if( auth_id ) {
+ ctx->sc_external_id = *auth_id;
+ auth_id->bv_len = 0;
+ auth_id->bv_val = NULL;
+ } else {
+ ctx->sc_external_id.bv_len = 0;
+ ctx->sc_external_id.bv_val = NULL;
+ }
+#endif
+
+ return LDAP_SUCCESS;
+}
+
+int slap_sasl_reset( Connection *conn )
+{
+ return LDAP_SUCCESS;
+}
+
+char ** slap_sasl_mechs( Connection *conn )
+{
+ char **mechs = NULL;
+
+#ifdef HAVE_CYRUS_SASL
+ sasl_conn_t *ctx = conn->c_sasl_authctx;
+
+ if( ctx == NULL ) ctx = conn->c_sasl_sockctx;
+
+ if( ctx != NULL ) {
+ int sc;
+ SASL_CONST char *mechstr;
+
+ sc = sasl_listmech( ctx,
+ NULL, NULL, ",", NULL,
+ &mechstr, NULL, NULL );
+
+ if( sc != SASL_OK ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ERR,
+ "slap_sasl_mechs: sasl_listmech failed: %d\n", sc, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY, "slap_sasl_listmech failed: %d\n",
+ sc, 0, 0 );
+#endif
+
+ return NULL;
+ }
+
+ mechs = ldap_str2charray( mechstr, "," );
+
+#if SASL_VERSION_MAJOR < 2
+ ch_free( mechstr );
+#endif
+ }
+#elif defined(SLAP_BUILTIN_SASL)
+ /* builtin SASL implementation */
+ SASL_CTX *ctx = conn->c_sasl_authctx;
+ if ( ctx != NULL && ctx->sc_external_id.bv_val ) {
+ /* should check ssf */
+ mechs = ldap_str2charray( "EXTERNAL", "," );
+ }
+#endif
+
+ return mechs;
+}
+
+int slap_sasl_close( Connection *conn )
+{
+#ifdef HAVE_CYRUS_SASL
+ sasl_conn_t *ctx = conn->c_sasl_authctx;
+
+ if( ctx != NULL ) {
+ sasl_dispose( &ctx );
+ }
+ if ( conn->c_sasl_sockctx &&
+ conn->c_sasl_authctx != conn->c_sasl_sockctx )
+ {
+ ctx = conn->c_sasl_sockctx;
+ sasl_dispose( &ctx );
+ }
+
+ conn->c_sasl_authctx = NULL;
+ conn->c_sasl_sockctx = NULL;
+ conn->c_sasl_done = 0;
+
+ free( conn->c_sasl_extra );
+ conn->c_sasl_extra = NULL;
+
+#elif defined(SLAP_BUILTIN_SASL)
+ SASL_CTX *ctx = conn->c_sasl_authctx;
+ if( ctx ) {
+ if( ctx->sc_external_id.bv_val ) {
+ free( ctx->sc_external_id.bv_val );
+ ctx->sc_external_id.bv_val = NULL;
+ }
+ free( ctx );
+ conn->c_sasl_authctx = NULL;
+ }
+#endif
+
+ return LDAP_SUCCESS;
+}
+
+int slap_sasl_bind( Operation *op, SlapReply *rs )
+{
+#ifdef HAVE_CYRUS_SASL
+ sasl_conn_t *ctx = op->o_conn->c_sasl_authctx;
+ struct berval response;
+ unsigned reslen = 0;
+ int sc;
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "sasl_bind: dn=\"%s\" mech=%s datalen=%ld\n",
+ op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "",
+ op->o_conn->c_sasl_bind_in_progress ? "<continuing>" :
+ op->o_conn->c_sasl_bind_mech.bv_val,
+ op->orb_cred.bv_len );
+#else
+ Debug(LDAP_DEBUG_ARGS,
+ "==> sasl_bind: dn=\"%s\" mech=%s datalen=%ld\n",
+ op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "",
+ op->o_conn->c_sasl_bind_in_progress ? "<continuing>" :
+ op->o_conn->c_sasl_bind_mech.bv_val,
+ op->orb_cred.bv_len );
+#endif
+
+ if( ctx == NULL ) {
+ send_ldap_error( op, rs, LDAP_UNAVAILABLE,
+ "SASL unavailable on this session" );
+ return rs->sr_err;
+ }
+
+#if SASL_VERSION_MAJOR >= 2
+#define START( ctx, mech, cred, clen, resp, rlen, err ) \
+ sasl_server_start( ctx, mech, cred, clen, resp, rlen )
+#define STEP( ctx, cred, clen, resp, rlen, err ) \
+ sasl_server_step( ctx, cred, clen, resp, rlen )
+#else
+#define START( ctx, mech, cred, clen, resp, rlen, err ) \
+ sasl_server_start( ctx, mech, cred, clen, resp, rlen, err )
+#define STEP( ctx, cred, clen, resp, rlen, err ) \
+ sasl_server_step( ctx, cred, clen, resp, rlen, err )
+#endif
+
+ if ( !op->o_conn->c_sasl_bind_in_progress ) {
+ /* If we already authenticated once, must use a new context */
+ if ( op->o_conn->c_sasl_done ) {
+ slap_ssf_t ssf = 0;
+ const char *authid = NULL;
+#if SASL_VERSION_MAJOR >= 2
+ sasl_getprop( ctx, SASL_SSF_EXTERNAL, (void *)&ssf );
+ sasl_getprop( ctx, SASL_AUTH_EXTERNAL, (void *)&authid );
+ if ( authid ) authid = ch_strdup( authid );
+#endif
+ if ( ctx != op->o_conn->c_sasl_sockctx ) {
+ sasl_dispose( &ctx );
+ }
+ op->o_conn->c_sasl_authctx = NULL;
+
+ slap_sasl_open( op->o_conn, 1 );
+ ctx = op->o_conn->c_sasl_authctx;
+#if SASL_VERSION_MAJOR >= 2
+ if ( authid ) {
+ sasl_setprop( ctx, SASL_SSF_EXTERNAL, &ssf );
+ sasl_setprop( ctx, SASL_AUTH_EXTERNAL, authid );
+ ch_free( (char *)authid );
+ }
+#endif
+ }
+ sc = START( ctx,
+ op->o_conn->c_sasl_bind_mech.bv_val,
+ op->orb_cred.bv_val, op->orb_cred.bv_len,
+ (SASL_CONST char **)&response.bv_val, &reslen, &rs->sr_text );
+
+ } else {
+ sc = STEP( ctx,
+ op->orb_cred.bv_val, op->orb_cred.bv_len,
+ (SASL_CONST char **)&response.bv_val, &reslen, &rs->sr_text );
+ }
+
+ response.bv_len = reslen;
+
+ if ( sc == SASL_OK ) {
+ sasl_ssf_t *ssf = NULL;
+
+ op->orb_edn = op->o_conn->c_sasl_dn;
+ op->o_conn->c_sasl_dn.bv_val = NULL;
+ op->o_conn->c_sasl_dn.bv_len = 0;
+ op->o_conn->c_sasl_done = 1;
+
+ rs->sr_err = LDAP_SUCCESS;
+
+ (void) sasl_getprop( ctx, SASL_SSF, (void *)&ssf );
+ op->orb_ssf = ssf ? *ssf : 0;
+
+ ctx = NULL;
+ if( op->orb_ssf ) {
+ ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+ op->o_conn->c_sasl_layers++;
+
+ /* If there's an old layer, set sockctx to NULL to
+ * tell connection_read() to wait for us to finish.
+ * Otherwise there is a race condition: we have to
+ * send the Bind response using the old security
+ * context and then remove it before reading any
+ * new messages.
+ */
+ if ( op->o_conn->c_sasl_sockctx ) {
+ ctx = op->o_conn->c_sasl_sockctx;
+ op->o_conn->c_sasl_sockctx = NULL;
+ } else {
+ op->o_conn->c_sasl_sockctx = op->o_conn->c_sasl_authctx;
+ }
+ ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+ }
+
+ /* Must send response using old security layer */
+ if (response.bv_len) rs->sr_sasldata = &response;
+ send_ldap_sasl( op, rs );
+
+ /* Now dispose of the old security layer.
+ */
+ if ( ctx ) {
+ ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+ ldap_pvt_sasl_remove( op->o_conn->c_sb );
+ op->o_conn->c_sasl_sockctx = op->o_conn->c_sasl_authctx;
+ ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+ sasl_dispose( &ctx );
+ }
+ } else if ( sc == SASL_CONTINUE ) {
+ rs->sr_err = LDAP_SASL_BIND_IN_PROGRESS,
+ rs->sr_sasldata = &response;
+ send_ldap_sasl( op, rs );
+
+ } else {
+#if SASL_VERSION_MAJOR >= 2
+ rs->sr_text = sasl_errdetail( ctx );
+#endif
+ rs->sr_err = slap_sasl_err2ldap( sc ),
+ send_ldap_result( op, rs );
+ }
+
+#if SASL_VERSION_MAJOR < 2
+ if( response.bv_len ) {
+ ch_free( response.bv_val );
+ }
+#endif
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, RESULTS, "slap_sasl_bind: rc=%d\n", rs->sr_err, 0, 0 );
+#else
+ Debug(LDAP_DEBUG_TRACE, "<== slap_sasl_bind: rc=%d\n", rs->sr_err, 0, 0);
+#endif
+
+#elif defined(SLAP_BUILTIN_SASL)
+ /* built-in SASL implementation */
+ SASL_CTX *ctx = op->o_conn->c_sasl_authctx;
+
+ if ( ctx == NULL ) {
+ send_ldap_error( op, rs, LDAP_OTHER,
+ "Internal SASL Error" );
+
+ } else if ( bvmatch( &ext_bv, &op->o_conn->c_sasl_bind_mech ) ) {
+ /* EXTERNAL */
+
+ if( op->orb_cred.bv_len ) {
+ rs->sr_text = "proxy authorization not support";
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ send_ldap_result( op, rs );
+
+ } else {
+ op->orb_edn = ctx->sc_external_id;
+ rs->sr_err = LDAP_SUCCESS;
+ rs->sr_sasldata = NULL;
+ send_ldap_sasl( op, rs );
+ }
+
+ } else {
+ send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
+ "requested SASL mechanism not supported" );
+ }
+#else
+ send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
+ "SASL not supported" );
+#endif
+
+ return rs->sr_err;
+}
+
+char* slap_sasl_secprops( const char *in )
+{
+#ifdef HAVE_CYRUS_SASL
+ int rc = ldap_pvt_sasl_secprops( in, &sasl_secprops );
+
+ return rc == LDAP_SUCCESS ? NULL : "Invalid security properties";
+#else
+ return "SASL not supported";
+#endif
+}
+
+#ifdef HAVE_CYRUS_SASL
+int
+slap_sasl_setpass( Operation *op, SlapReply *rs )
+{
+ struct berval id = { 0, NULL }; /* needs to come from connection */
+ struct berval new = { 0, NULL };
+ struct berval old = { 0, NULL };
+
+ assert( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->ore_reqoid ) == 0 );
+
+ rs->sr_err = sasl_getprop( op->o_conn->c_sasl_authctx, SASL_USERNAME,
+ (SASL_CONST void **)&id.bv_val );
+
+ if( rs->sr_err != SASL_OK ) {
+ rs->sr_text = "unable to retrieve SASL username";
+ rs->sr_err = LDAP_OTHER;
+ goto done;
+ }
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( BACKEND, ENTRY,
+ "slap_sasl_setpass: \"%s\"\n",
+ id.bv_val ? id.bv_val : "", 0, 0);
+#else
+ Debug( LDAP_DEBUG_ARGS, "==> slap_sasl_setpass: \"%s\"\n",
+ id.bv_val ? id.bv_val : "", 0, 0 );
+#endif
+
+ rs->sr_err = slap_passwd_parse( op->ore_reqdata,
+ NULL, &old, &new, &rs->sr_text );
+
+ if( rs->sr_err != LDAP_SUCCESS ) {
+ goto done;
+ }
+
+ if( new.bv_len == 0 ) {
+ slap_passwd_generate(&new);
+
+ if( new.bv_len == 0 ) {
+ rs->sr_text = "password generation failed.";
+ rs->sr_err = LDAP_OTHER;
+ goto done;
+ }
+
+ rs->sr_rspdata = slap_passwd_return( &new );
+ }
+
+#if SASL_VERSION_MAJOR < 2
+ rs->sr_err = sasl_setpass( op->o_conn->c_sasl_authctx,
+ id.bv_val, new.bv_val, new.bv_len, 0, &rs->sr_text );
+#else
+ rs->sr_err = sasl_setpass( op->o_conn->c_sasl_authctx, id.bv_val,
+ new.bv_val, new.bv_len, old.bv_val, old.bv_len, 0 );
+ if( rs->sr_err != SASL_OK ) {
+ rs->sr_text = sasl_errdetail( op->o_conn->c_sasl_authctx );
+ }
+#endif
+ switch(rs->sr_err) {
+ case SASL_OK:
+ rs->sr_err = LDAP_SUCCESS;
+ break;
+
+ case SASL_NOCHANGE:
+ case SASL_NOMECH:
+ case SASL_DISABLED:
+ case SASL_PWLOCK:
+ case SASL_FAIL:
+ case SASL_BADPARAM:
+ default:
+ rs->sr_err = LDAP_OTHER;
+ }
+
+done:
+ return rs->sr_err;
+}
+#endif /* HAVE_CYRUS_SASL */
+
+/* Take any sort of identity string and return a DN with the "dn:" prefix. The
+ * string returned in *dn is in its own allocated memory, and must be free'd
+ * by the calling process. -Mark Adamson, Carnegie Mellon
+ *
+ * The "dn:" prefix is no longer used anywhere inside slapd. It is only used
+ * on strings passed in directly from SASL. -Howard Chu, Symas Corp.
+ */
+
+#define SET_NONE 0
+#define SET_DN 1
+#define SET_U 2
+
+int slap_sasl_getdn( Connection *conn, Operation *op, char *id, int len,
+ char *user_realm, struct berval *dn, int flags )
+{
+ int rc, is_dn = SET_NONE, do_norm = 1;
+ struct berval dn2, *mech;
+
+ assert( conn );
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl_getdn: conn %d id=%s [len=%d]\n",
+ conn->c_connid, id ? (*id ? id : "<empty>") : "NULL", len );
+#else
+ Debug( LDAP_DEBUG_ARGS, "slap_sasl_getdn: id=%s [len=%d]\n",
+ id ? ( *id ? id : "<empty>" ) : "NULL", len, 0 );
+#endif
+
+ if ( !op ) {
+ op = conn->c_sasl_bindop;
+ }
+
+ dn->bv_val = NULL;
+ dn->bv_len = 0;
+
+ if ( id ) {
+ if ( len == 0 ) len = strlen( id );
+
+ /* Blatantly anonymous ID */
+ if ( len == sizeof("anonymous") - 1 &&
+ !strcasecmp( id, "anonymous" ) ) {
+ return( LDAP_SUCCESS );
+ }
+ } else {
+ len = 0;
+ }
+
+ if ( conn->c_sasl_bind_mech.bv_len ) {
+ mech = &conn->c_sasl_bind_mech;
+ } else {
+ mech = &conn->c_authmech;
+ }
+
+ /* An authcID needs to be converted to authzID form. Set the
+ * values directly into *dn; they will be normalized later. (and
+ * normalizing always makes a new copy.) An ID from a TLS certificate
+ * is already normalized, so copy it and skip normalization.
+ */
+ if( flags & SLAP_GETDN_AUTHCID ) {
+ if( bvmatch( mech, &ext_bv )) {
+ /* EXTERNAL DNs are already normalized */
+ do_norm = 0;
+ is_dn = SET_DN;
+ ber_str2bv_x( id, len, 1, dn, op->o_tmpmemctx );
+
+ } else {
+ /* convert to u:<username> form */
+ is_dn = SET_U;
+ dn->bv_val = id;
+ dn->bv_len = len;
+ }
+ }
+ if( is_dn == SET_NONE ) {
+ if( !strncasecmp( id, "u:", sizeof("u:")-1 )) {
+ is_dn = SET_U;
+ dn->bv_val = id+2;
+ dn->bv_len = len-2;
+ } else if ( !strncasecmp( id, "dn:", sizeof("dn:")-1) ) {
+ is_dn = SET_DN;
+ dn->bv_val = id+3;
+ dn->bv_len = len-3;
+ }
+ }
+
+ /* No other possibilities from here */
+ if( is_dn == SET_NONE ) {
+ dn->bv_val = NULL;
+ dn->bv_len = 0;
+ return( LDAP_INAPPROPRIATE_AUTH );
+ }
+
+ /* Username strings */
+ if( is_dn == SET_U ) {
+ char *p;
+ struct berval realm = { 0, NULL }, c1 = *dn;
+
+ len = dn->bv_len + sizeof("uid=")-1 + sizeof(",cn=auth")-1;
+
+#if 0
+ /* username may have embedded realm name */
+ /* FIXME:
+ * userids can legally have embedded '@' chars;
+ * the realm should be set by those mechanisms
+ * that support it by means of the user_realm
+ * variable
+ */
+ if( ( realm.bv_val = strrchr( dn->bv_val, '@') ) ) {
+ char *r = realm.bv_val;
+
+ realm.bv_val++;
+ realm.bv_len = dn->bv_len - ( realm.bv_val - dn->bv_val );
+ len += sizeof( ",cn=" ) - 2;
+ c1.bv_len -= realm.bv_len + 1;
+
+ if ( strchr( dn->bv_val, '@') == r ) {
+ /* FIXME: ambiguity, is it the realm
+ * or something else? */
+ }
+
+ } else
+#endif
+ if( user_realm && *user_realm ) {
+ realm.bv_val = user_realm;
+ realm.bv_len = strlen( user_realm );
+ len += realm.bv_len + sizeof(",cn=") - 1;
+ }
+
+ if( mech->bv_len ) {
+ len += mech->bv_len + sizeof(",cn=")-1;
+ }
+
+ /* Build the new dn */
+ dn->bv_val = sl_malloc( len+1, op->o_tmpmemctx );
+ if( dn->bv_val == NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ERR,
+ "slap_sasl_getdn: SLAP_MALLOC failed", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_ANY,
+ "slap_sasl_getdn: SLAP_MALLOC failed", 0, 0, 0 );
+#endif
+ return LDAP_OTHER;
+ }
+ p = lutil_strcopy( dn->bv_val, "uid=" );
+ p = lutil_strncopy( p, c1.bv_val, c1.bv_len );
+
+ if( realm.bv_len ) {
+ p = lutil_strcopy( p, ",cn=" );
+ p = lutil_strncopy( p, realm.bv_val, realm.bv_len );
+ }
+
+ if( mech->bv_len ) {
+ p = lutil_strcopy( p, ",cn=" );
+ p = lutil_strcopy( p, mech->bv_val );
+ }
+ p = lutil_strcopy( p, ",cn=auth" );
+ dn->bv_len = p - dn->bv_val;
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl_getdn: u:id converted to %s.\n", dn->bv_val, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_sasl_getdn: u:id converted to %s\n", dn->bv_val,0,0 );
+#endif
+ } else {
+
+ /* Dup the DN in any case, so we don't risk
+ * leaks or dangling pointers later,
+ * and the DN value is '\0' terminated */
+ ber_dupbv_x( &dn2, dn, op->o_tmpmemctx );
+ dn->bv_val = dn2.bv_val;
+ }
+
+ /* All strings are in DN form now. Normalize if needed. */
+ if ( do_norm ) {
+ rc = dnNormalize( 0, NULL, NULL, dn, &dn2, op->o_tmpmemctx );
+
+ /* User DNs were constructed above and must be freed now */
+ sl_free( dn->bv_val, op->o_tmpmemctx );
+
+ if ( rc != LDAP_SUCCESS ) {
+ dn->bv_val = NULL;
+ dn->bv_len = 0;
+ return rc;
+ }
+ *dn = dn2;
+ }
+
+ /* Run thru regexp */
+ slap_sasl2dn( op, dn, &dn2, flags );
+ if( dn2.bv_val ) {
+ sl_free( dn->bv_val, op->o_tmpmemctx );
+ *dn = dn2;
+#ifdef NEW_LOGGING
+ LDAP_LOG( TRANSPORT, ENTRY,
+ "slap_sasl_getdn: dn:id converted to %s.\n", dn->bv_val, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "getdn: dn:id converted to %s\n",
+ dn->bv_val, 0, 0 );
+#endif
+ }
+
+ return( LDAP_SUCCESS );
+}