+ gid_t gid;
+
+ if ((gid = getgid()) < 0) {
+ fprintf(stderr, "Could no get gid.\n");
+ return smprintf(unknowntext);
+ } else {
+ return smprintf("%d", gid);
+ }
+
+ return smprintf(unknowntext);
+}
+
+/* hostname */
+char *
+hostname(const char *null)
+{
+ char hostname[HOST_NAME_MAX];
+ FILE *fp;
+
+ /* open hostname file */
+ if (!(fp = fopen("/proc/sys/kernel/hostname", "r"))) {
+ fprintf(stderr, "Could not open hostname file.\n");
+ return smprintf(unknowntext);
+ }
+
+ /* extract hostname */
+ fscanf(fp, "%s\n", hostname);
+
+ /* close hostname file */
+ fclose(fp);
+
+ /* return entropy */
+ return smprintf("%s", hostname);
+}
+
+/* ip address */
+char *
+ip(const char *interface)
+{
+ struct ifaddrs *ifaddr, *ifa;
+ int s;
+ char host[NI_MAXHOST];
+
+ /* check if getting ip address works */
+ if (getifaddrs(&ifaddr) == -1) {
+ fprintf(stderr, "Error getting IP address.\n");
+ return smprintf(unknowntext);
+ }
+
+ /* get the ip address */
+ for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
+ if (ifa->ifa_addr == NULL) {
+ continue;
+ }
+
+ s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
+
+ if ((strcmp(ifa->ifa_name, interface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) {
+ if (s != 0) {
+ fprintf(stderr, "Error getting IP address.\n");
+ return smprintf(unknowntext);
+ }
+ return smprintf("%s", host);
+ }
+ }
+
+ /* free the address */
+ freeifaddrs(ifaddr);
+
+ return smprintf(unknowntext);
+}
+
+/* load avg */
+char *
+load_avg(const char *null)
+{
+ double avgs[3];
+
+ /* try to get load avg */
+ if (getloadavg(avgs, 3) < 0) {
+ fprintf(stderr, "Error getting load avg.\n");
+ return smprintf(unknowntext);
+ }
+
+ /* return it */
+ return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
+}
+
+/* ram free */
+char *
+ram_free(const char *null)
+{
+ long free;
+ FILE *fp;
+
+ /* open meminfo file */
+ if (!(fp = fopen("/proc/meminfo", "r"))) {
+ fprintf(stderr, "Error opening meminfo file.\n");
+ return smprintf(unknowntext);
+ }
+
+ /* read the values */
+ fscanf(fp, "MemFree: %ld kB\n", &free);
+
+ /* close meminfo file */
+ fclose(fp);
+
+ /* return free ram as string */
+ return smprintf("%f", (float)free / 1024 / 1024);