+ if ( (fp = ldif_open( fname, "r" )) == NULL ) {
+ Debug( LDAP_DEBUG_ANY,
+ "could not open rootdse attr file \"%s\" - absolute path?\n",
+ fname, 0, 0 );
+ perror( fname );
+ return EXIT_FAILURE;
+ }
+
+ usr_attr = (Entry *) SLAP_CALLOC( 1, sizeof(Entry) );
+ if( usr_attr == NULL ) {
+ Debug( LDAP_DEBUG_ANY,
+ "read_root_dse_file: SLAP_CALLOC failed", 0, 0, 0 );
+ ldif_close( fp );
+ return LDAP_OTHER;
+ }
+ usr_attr->e_attrs = NULL;
+
+ while( ldif_read_record( fp, &lineno, &buf, &lmax ) ) {
+ Entry *e = str2entry( buf );
+ Attribute *a;
+
+ if( e == NULL ) {
+ fprintf( stderr, "root_dse: could not parse entry (line=%d)\n",
+ lineno );
+ rc = EXIT_FAILURE;
+ break;
+ }
+
+ /* make sure the DN is the empty DN */
+ if( e->e_nname.bv_len ) {
+ fprintf( stderr,
+ "root_dse: invalid rootDSE - dn=\"%s\" (line=%d)\n",
+ e->e_dn, lineno );
+ entry_free( e );
+ rc = EXIT_FAILURE;
+ break;
+ }
+
+ /*
+ * we found a valid entry, so walk thru all the attributes in the
+ * entry, and add each attribute type and description to the
+ * usr_attr entry
+ */
+
+ for(a = e->e_attrs; a != NULL; a = a->a_next) {
+ if( attr_merge( usr_attr, a->a_desc, a->a_vals,
+ (a->a_nvals == a->a_vals) ? NULL : a->a_nvals ) )
+ {
+ rc = LDAP_OTHER;
+ break;
+ }
+ }
+
+ entry_free( e );
+ if (rc) break;
+ }
+
+ if (rc) {
+ entry_free( usr_attr );
+ usr_attr = NULL;
+ }
+
+ ch_free( buf );
+
+ ldif_close( fp );
+
+ Debug(LDAP_DEBUG_CONFIG, "rootDSE file %s read.\n", fname, 0, 0);
+ return rc;
+}
+
+int
+slap_discover_feature(
+ const char *uri,
+ int version,
+ const char *attr,
+ const char *val )
+{
+ LDAP *ld;
+ LDAPMessage *res = NULL, *entry;
+ int rc, i;
+ struct berval cred = BER_BVC( "" ),
+ bv_val,
+ **values = NULL;
+ char *attrs[ 2 ] = { NULL, NULL };
+
+ ber_str2bv( val, 0, 0, &bv_val );
+ attrs[ 0 ] = (char *) attr;
+
+ rc = ldap_initialize( &ld, uri );
+ if ( rc != LDAP_SUCCESS ) {
+ return rc;
+ }
+
+ rc = ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, &version );
+ if ( rc != LDAP_SUCCESS ) {
+ goto done;
+ }
+
+ rc = ldap_sasl_bind_s( ld, "", LDAP_SASL_SIMPLE,
+ &cred, NULL, NULL, NULL );
+ if ( rc != LDAP_SUCCESS ) {
+ goto done;
+ }
+
+ rc = ldap_search_ext_s( ld, "", LDAP_SCOPE_BASE, "(objectClass=*)",
+ attrs, 0, NULL, NULL, NULL, 0, &res );
+ if ( rc != LDAP_SUCCESS ) {
+ goto done;
+ }
+
+ entry = ldap_first_entry( ld, res );
+ if ( entry == NULL ) {
+ goto done;
+ }
+
+ values = ldap_get_values_len( ld, entry, attrs[ 0 ] );
+ if ( values == NULL ) {
+ rc = LDAP_NO_SUCH_ATTRIBUTE;
+ goto done;
+ }
+
+ for ( i = 0; values[ i ] != NULL; i++ ) {
+ if ( bvmatch( &bv_val, values[ i ] ) ) {
+ rc = LDAP_COMPARE_TRUE;
+ goto done;
+ }
+ }
+
+ rc = LDAP_COMPARE_FALSE;
+
+done:;
+ if ( values != NULL ) {
+ ldap_value_free_len( values );
+ }
+
+ if ( res != NULL ) {
+ ldap_msgfree( res );
+ }