+ if (fp == NULL) {
+ warn("Error opening meminfo file");
+ return smprintf(UNKNOWN_STR);
+ }
+
+ fscanf(fp, "MemTotal: %ld kB\n", &total);
+ fscanf(fp, "MemFree: %ld kB\n", &free);
+ fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n", &buffers, &buffers);
+ fscanf(fp, "Cached: %ld kB\n", &cached);
+
+ fclose(fp);
+ used = total - free - buffers - cached;
+
+ return smprintf("%f", (float)used / 1024 / 1024);
+}
+
+static char *
+run_command(const char* command)
+{
+ int good;
+ FILE *fp = popen(command, "r");
+ char buffer[64] = "";
+
+ if (fp == NULL) {
+ warn("Could not get command output for: %s", command);
+ return smprintf(UNKNOWN_STR);
+ }
+
+ fgets(buffer, sizeof(buffer)-1, fp);
+ pclose(fp);
+ for (int i = 0 ; i != sizeof(buffer); i++) {
+ if (buffer[i] == '\0') {
+ good = 1;
+ break;
+ }
+ }
+ if (good)
+ buffer[strlen(buffer)-1] = '\0';
+
+ return smprintf("%s", buffer);
+}
+
+static char *
+temp(const char *file)
+{
+ int temperature;
+ FILE *fp = fopen(file, "r");
+
+ if (fp == NULL) {
+ warn("Could not open temperature file");
+ return smprintf(UNKNOWN_STR);
+ }
+
+ fscanf(fp, "%d", &temperature);
+ fclose(fp);
+
+ return smprintf("%d°C", temperature / 1000);
+}
+
+static char *
+uptime(void)
+{
+ struct sysinfo info;
+ int hours = 0;
+ int minutes = 0;
+
+ sysinfo(&info);
+ hours = info.uptime / 3600;
+ minutes = (info.uptime - hours * 3600 ) / 60;
+
+ return smprintf("%dh %dm", hours, minutes);
+}
+
+static char *
+username(void)
+{
+ uid_t uid = geteuid();
+ struct passwd *pw = getpwuid(uid);
+
+ if (pw == NULL) {
+ warn("Could not get username");
+ return smprintf(UNKNOWN_STR);
+ }
+
+ return smprintf("%s", pw->pw_name);
+}
+
+static char *
+uid(void)
+{
+ return smprintf("%d", geteuid());
+}
+
+
+static char *
+vol_perc(const char *snd_card)
+{ /* FIX THIS SHIT! */
+ long int vol, max, min;
+ snd_mixer_t *handle;
+ snd_mixer_elem_t *elem;
+ snd_mixer_selem_id_t *s_elem;
+
+ snd_mixer_open(&handle, 0);
+ snd_mixer_attach(handle, snd_card);
+ snd_mixer_selem_register(handle, NULL, NULL);
+ snd_mixer_load(handle);
+ snd_mixer_selem_id_malloc(&s_elem);
+ snd_mixer_selem_id_set_name(s_elem, ALSA_CHANNEL);
+ elem = snd_mixer_find_selem(handle, s_elem);
+
+ if (elem == NULL) {
+ snd_mixer_selem_id_free(s_elem);
+ snd_mixer_close(handle);
+ warn("error: ALSA");
+ return smprintf(UNKNOWN_STR);
+ }
+
+ snd_mixer_handle_events(handle);
+ snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
+ snd_mixer_selem_get_playback_volume(elem, 0, &vol);
+
+ snd_mixer_selem_id_free(s_elem);
+ snd_mixer_close(handle);
+
+ return smprintf("%d", ((uint_fast16_t)(vol * 100) / max));
+}
+
+static char *
+wifi_perc(const char *wificard)
+{
+ int strength;
+ char buf[255];
+ char *datastart;
+ char status[5];
+ FILE *fp;
+
+ ccat(3, "/sys/class/net", wificard, "/operstate");
+
+ fp = fopen(concat, "r");
+
+ if(fp == NULL) {
+ warn("Error opening wifi operstate file");
+ return smprintf(UNKNOWN_STR);
+ }
+
+ fgets(status, 5, fp);
+ fclose(fp);
+ if(strcmp(status, "up\n") != 0)
+ return smprintf(UNKNOWN_STR);
+
+ fp = fopen("/proc/net/wireless", "r");
+ if (fp == NULL) {
+ warn("Error opening wireless file");
+ return smprintf(UNKNOWN_STR);
+ }
+
+ ccat(2, wificard, ":");
+ fgets(buf, sizeof(buf), fp);
+ fgets(buf, sizeof(buf), fp);
+ fgets(buf, sizeof(buf), fp);
+
+ datastart = strstr(buf, concat);
+ if (datastart != NULL) {
+ datastart = strstr(buf, ":");
+ sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &strength);
+ }
+
+ fclose(fp);
+
+ return smprintf("%d%%", strength);
+}
+
+static char *
+wifi_essid(const char *wificard)
+{
+ char id[IW_ESSID_MAX_SIZE+1];
+ int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
+ struct iwreq wreq;
+
+ memset(&wreq, 0, sizeof(struct iwreq));
+ wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
+ sprintf(wreq.ifr_name, wificard);
+ if(sockfd == -1) {
+ warn("Cannot open socket for interface: %s", wificard);
+ return smprintf(UNKNOWN_STR);
+ }
+ wreq.u.essid.pointer = id;
+ if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
+ warn("Get ESSID ioctl failed for interface %s", wificard);
+ return smprintf(UNKNOWN_STR);
+ }
+
+ if (strcmp((char *)wreq.u.essid.pointer, "") == 0)
+ return smprintf(UNKNOWN_STR);
+ else
+ return smprintf("%s", (char *)wreq.u.essid.pointer);
+}
+
+int
+main(void)
+{
+ size_t i;
+ char status_string[4096];
+ char *res, *element;
+ struct arg argument;
+
+ dpy = XOpenDisplay(NULL);
+
+ for (;;) {
+ memset(status_string, 0, sizeof(status_string));
+ for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
+ argument = args[i];
+ if (argument.args == NULL)
+ res = argument.func();
+ else
+ res = argument.func(argument.args);
+ element = smprintf(argument.format, res);
+ if (element == NULL) {
+ element = smprintf(UNKNOWN_STR);
+ warnx("Failed to format output.");
+ }
+ strlcat(status_string, element, sizeof(status_string));
+ free(res);
+ free(element);
+ }
+ XStoreName(dpy, DefaultRootWindow(dpy), status_string);
+ XSync(dpy, False);
+ /*
+ * subtract delay time spend in function
+ * calls from the actual global delay time
+ */
+ sleep(UPDATE_INTERVAL - delay);
+ delay = 0;
+ }
+
+ XCloseDisplay(dpy);
+
+ return 0;