+void set_current_config(void);
+void set_current_config(void)
+{
+ /* check if specified config file is valid */
+ if (current_config) {
+ struct stat sb;
+ if (stat(current_config, &sb) ||
+ (!S_ISREG(sb.st_mode) && !S_ISLNK(sb.st_mode))) {
+ NORM_ERR("invalid configuration file '%s'\n", current_config);
+ free(current_config);
+ current_config = 0;
+ }
+ }
+
+ /* load current_config, CONFIG_FILE or SYSTEM_CONFIG_FILE */
+
+ if (!current_config) {
+ /* load default config file */
+ char buf[DEFAULT_TEXT_BUFFER_SIZE];
+ FILE *fp;
+
+ /* Try to use personal config file first */
+ to_real_path(buf, CONFIG_FILE);
+ if (buf[0] && (fp = fopen(buf, "r"))) {
+ current_config = strndup(buf, max_user_text);
+ fclose(fp);
+ }
+
+ /* Try to use system config file if personal config not readable */
+ if (!current_config && (fp = fopen(SYSTEM_CONFIG_FILE, "r"))) {
+ current_config = strndup(SYSTEM_CONFIG_FILE, max_user_text);
+ fclose(fp);
+ }
+
+ /* No readable config found */
+ if (!current_config) {
+#define NOCFGFILEFOUND "no readable personal or system-wide config file found"
+#ifdef BUILD_BUILTIN_CONFIG
+ current_config = strdup("==builtin==");
+ NORM_ERR(NOCFGFILEFOUND
+ ", using builtin default");
+#else
+ CRIT_ERR(NULL, NULL, NOCFGFILEFOUND);
+#endif /* ! CONF_OUTPUT */
+ }
+ }
+}
+