+
+/*******************************************************************
+ Check if root-dse has a certain Control or Extension
+********************************************************************/
+
+static BOOL smbldap_check_root_dse(struct smbldap_state *ldap_state, const char **attrs, const char *value)
+{
+ LDAPMessage *msg = NULL;
+ LDAPMessage *entry = NULL;
+ char **values = NULL;
+ int rc, num_result, num_values, i;
+ BOOL result = False;
+
+ if (!attrs[0]) {
+ DEBUG(3,("smbldap_check_root_dse: nothing to look for\n"));
+ return False;
+ }
+
+ if (!strequal(attrs[0], "supportedExtension") &&
+ !strequal(attrs[0], "supportedControl")) {
+ DEBUG(3,("smbldap_check_root_dse: no idea what to query root-dse for: %s ?\n", attrs[0]));
+ return False;
+ }
+
+ rc = ldap_search_s(ldap_state->ldap_struct, "", LDAP_SCOPE_BASE,
+ "(objectclass=*)", attrs, 0 , &msg);
+
+ if (rc != LDAP_SUCCESS) {
+ DEBUG(3,("smbldap_check_root_dse: Could not search rootDSE\n"));
+ return False;
+ }
+
+ num_result = ldap_count_entries(ldap_state->ldap_struct, msg);
+
+ if (num_result != 1) {
+ DEBUG(3,("smbldap_check_root_dse: Expected one rootDSE, got %d\n", num_result));
+ goto done;
+ }
+
+ entry = ldap_first_entry(ldap_state->ldap_struct, msg);
+
+ if (entry == NULL) {
+ DEBUG(3,("smbldap_check_root_dse: Could not retrieve rootDSE\n"));
+ goto done;
+ }
+
+ values = ldap_get_values(ldap_state->ldap_struct, entry, attrs[0]);
+
+ if (values == NULL) {
+ DEBUG(5,("smbldap_check_root_dse: LDAP Server does not support any %s\n", attrs[0]));
+ goto done;
+ }
+
+ num_values = ldap_count_values(values);
+
+ if (num_values == 0) {
+ DEBUG(5,("smbldap_check_root_dse: LDAP Server does not have any %s\n", attrs[0]));
+ goto done;
+ }
+
+ for (i=0; i<num_values; i++) {
+ if (strcmp(values[i], value) == 0)
+ result = True;
+ }
+
+
+ done:
+ if (values != NULL)
+ ldap_value_free(values);
+ if (msg != NULL)
+ ldap_msgfree(msg);
+
+ return result;
+}
+
+/*******************************************************************
+ Check if LDAP-Server supports a certain Control (OID in string format)
+********************************************************************/
+
+BOOL smbldap_has_control(struct smbldap_state *ldap_state, const char *control)
+{
+ const char *attrs[] = { "supportedControl", NULL };
+ return smbldap_check_root_dse(ldap_state, attrs, control);
+}
+
+/*******************************************************************
+ Check if LDAP-Server supports a certain Extension (OID in string format)
+********************************************************************/
+
+BOOL smbldap_has_extension(struct smbldap_state *ldap_state, const char *extension)
+{
+ const char *attrs[] = { "supportedExtension", NULL };
+ return smbldap_check_root_dse(ldap_state, attrs, extension);
+}