+
+ADS_STATUS ads_guess_service_principal(ADS_STRUCT *ads,
+ const char *given_principal,
+ char **returned_principal)
+{
+ char *princ = NULL;
+
+ if (ads->server.realm && ads->server.ldap_server) {
+ char *server, *server_realm;
+
+ server = SMB_STRDUP(ads->server.ldap_server);
+ server_realm = SMB_STRDUP(ads->server.realm);
+
+ if (!server || !server_realm) {
+ return ADS_ERROR(LDAP_NO_MEMORY);
+ }
+
+ strlower_m(server);
+ strupper_m(server_realm);
+ asprintf(&princ, "ldap/%s@%s", server, server_realm);
+
+ SAFE_FREE(server);
+ SAFE_FREE(server_realm);
+
+ if (!princ) {
+ return ADS_ERROR(LDAP_NO_MEMORY);
+ }
+ } else if (ads->config.realm && ads->config.ldap_server_name) {
+ char *server, *server_realm;
+
+ server = SMB_STRDUP(ads->config.ldap_server_name);
+ server_realm = SMB_STRDUP(ads->config.realm);
+
+ if (!server || !server_realm) {
+ return ADS_ERROR(LDAP_NO_MEMORY);
+ }
+
+ strlower_m(server);
+ strupper_m(server_realm);
+ asprintf(&princ, "ldap/%s@%s", server, server_realm);
+
+ SAFE_FREE(server);
+ SAFE_FREE(server_realm);
+
+ if (!princ) {
+ return ADS_ERROR(LDAP_NO_MEMORY);
+ }
+ }
+
+ if (!princ) {
+ return ADS_ERROR(LDAP_PARAM_ERROR);
+ }
+
+ *returned_principal = princ;
+
+ return ADS_SUCCESS;
+}
+