-
- gethostname(t, sizeof(t));
- t[sizeof(t)-1] = 0;
-
- return avahi_normalize_name(t, ret_s, size);
+
+ if (gethostname(ret_s, size) >= 0) {
+ ret_s[size-1] = 0;
+ strip_bad_chars(ret_s);
+ } else
+ *ret_s = 0;
+
+ if (strcmp(ret_s, "localhost") == 0 || strncmp(ret_s, "localhost.", 10) == 0) {
+ *ret_s = 0;
+ avahi_log_warn("System host name is set to 'localhost'. This is not a suitable mDNS host name, looking for alternatives.");
+ }
+
+ if (*ret_s == 0) {
+ /* No hostname was set, so let's take the OS name */
+
+#ifdef __linux__
+
+ /* Try LSB distribution name first */
+ if (load_lsb_distrib_id(ret_s, size) >= 0) {
+ strip_bad_chars(ret_s);
+ avahi_strdown(ret_s);
+ }
+
+ if (*ret_s == 0)
+#endif
+
+ {
+ /* Try uname() second */
+ struct utsname utsname;
+
+ if (uname(&utsname) >= 0) {
+ snprintf(ret_s, size, "%s", utsname.sysname);
+ strip_bad_chars(ret_s);
+ avahi_strdown(ret_s);
+ }
+
+ /* Give up */
+ if (*ret_s == 0)
+ snprintf(ret_s, size, "unnamed");
+ }
+ }
+
+ if (size >= AVAHI_LABEL_MAX)
+ ret_s[AVAHI_LABEL_MAX-1] = 0;
+
+ return ret_s;