-static char *
-smprintf(const char *fmt, ...)
-{
- va_list ap;
- char *ret;
- int len;
-
- va_start(ap, fmt);
- len = vsnprintf(NULL, 0, fmt, ap);
- va_end(ap);
-
- ret = malloc(++len);
- if (ret == NULL) {
- perror("malloc");
- exit(1);
- }
-
- va_start(ap, fmt);
- vsnprintf(ret, len, fmt, ap);
- va_end(ap);
-
- return ret;
-}
-
-static char *
-battery_perc(const char *battery)
-{
- int perc;
- FILE *fp;
-
- ccat(3, "/sys/class/power_supply/", battery, "/capacity");
- fp = fopen(concat, "r");
- if (fp == NULL) {
- warn("Error opening battery file: %s", concat);
- return smprintf(UNKNOWN_STR);
- }
- fscanf(fp, "%i", &perc);
- fclose(fp);
-
- return smprintf("%d%%", perc);
-}
-
-static char *
-battery_state(const char *battery)
-{
- char state[12];
- FILE *fp;
-
- ccat(3, "/sys/class/power_supply/", battery, "/status");
- fp = fopen(concat, "r");
- if (fp == NULL) {
- warn("Error opening battery file: %s", concat);
- return smprintf(UNKNOWN_STR);
- }
- fscanf(fp, "%12s", state);
- fclose(fp);
-
- if (strcmp(state, "Charging") == 0)
- return smprintf("+");
- else if (strcmp(state, "Discharging") == 0)
- return smprintf("-");
- else if (strcmp(state, "Full") == 0)
- return smprintf("=");
- else
- return smprintf("?");
-}
-
-static char *
-cpu_perc(void)
-{
- int perc;
- long double a[4], b[4];
- FILE *fp = fopen("/proc/stat","r");
-
- if (fp == NULL) {
- warn("Error opening stat file");
- return smprintf(UNKNOWN_STR);
- }
-
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
- fclose(fp);
-
- delay = (UPDATE_INTERVAL - (UPDATE_INTERVAL - 1));
- sleep(delay);
-
- fp = fopen("/proc/stat","r");
- if (fp == NULL) {
- warn("Error opening stat file");
- return smprintf(UNKNOWN_STR);
- }
-
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
- fclose(fp);
- perc = 100 * ((b[0]+b[1]+b[2]) - (a[0]+a[1]+a[2])) / ((b[0]+b[1]+b[2]+b[3]) - (a[0]+a[1]+a[2]+a[3]));
-
- return smprintf("%d%%", perc);
-}
-
-static char *
-datetime(const char *timeformat)
-{
- time_t t;
- char timestr[80];
-
- t = time(NULL);
- if (strftime(timestr, sizeof(timestr), timeformat, localtime(&t)) == 0)
- return smprintf(UNKNOWN_STR);
-
- return smprintf("%s", timestr);
-}
-
-static char *
-disk_free(const char *mountpoint)
-{
- struct statvfs fs;
-
- if (statvfs(mountpoint, &fs) < 0) {
- warn("Could not get filesystem info");
- return smprintf(UNKNOWN_STR);
- }
-
- return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
-}
-
-static char *
-disk_perc(const char *mountpoint)
-{
- int perc = 0;
- struct statvfs fs;
-
- if (statvfs(mountpoint, &fs) < 0) {
- warn("Could not get filesystem info");
- return smprintf(UNKNOWN_STR);
- }
-
- perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
-
- return smprintf("%d%%", perc);
-}
-
-static char *
-disk_total(const char *mountpoint)
-{
- struct statvfs fs;
-
- if (statvfs(mountpoint, &fs) < 0) {
- warn("Could not get filesystem info");
- return smprintf(UNKNOWN_STR);
- }
-
- return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
-}
-
-static char *
-disk_used(const char *mountpoint)
-{
- struct statvfs fs;
-
- if (statvfs(mountpoint, &fs) < 0) {
- warn("Could not get filesystem info");
- return smprintf(UNKNOWN_STR);
- }
-
- return smprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
-}
-
-static char *
-entropy(void)
-{
- int entropy = 0;
- FILE *fp = fopen("/proc/sys/kernel/random/entropy_avail", "r");
-
- if (fp == NULL) {
- warn("Could not open entropy file");
- return smprintf(UNKNOWN_STR);
- }
-
- fscanf(fp, "%d", &entropy);
- fclose(fp);
-
- return smprintf("%d", entropy);
-}
-
-static char *
-gid(void)
-{
- return smprintf("%d", getgid());
-}
-
-static char *
-hostname(void)
-{
- char hostname[HOST_NAME_MAX];
- FILE *fp = fopen("/proc/sys/kernel/hostname", "r");
-
- if (fp == NULL) {
- warn("Could not open hostname file");
- return smprintf(UNKNOWN_STR);
- }
-
- fgets(hostname, sizeof(hostname), fp);
- hostname[strlen(hostname)-1] = '\0';
- fclose(fp);
-
- return smprintf("%s", hostname);
-}
-
-static char *
-ip(const char *interface)
-{
- struct ifaddrs *ifaddr, *ifa;
- int s;
- char host[NI_MAXHOST];
-
- if (getifaddrs(&ifaddr) == -1) {
- warn("Error getting IP address");
- return smprintf(UNKNOWN_STR);
- }
-
- 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) {
- warnx("Error getting IP address.");
- return smprintf(UNKNOWN_STR);
- }
- return smprintf("%s", host);
- }
- }
-
- freeifaddrs(ifaddr);
-
- return smprintf(UNKNOWN_STR);
-}
-
-static char *
-load_avg(void)
-{
- double avgs[3];
-
- if (getloadavg(avgs, 3) < 0) {
- warnx("Error getting load avg.");
- return smprintf(UNKNOWN_STR);
- }
-
- return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
-}
-
-static char *
-ram_free(void)
-{
- long free;
- FILE *fp = fopen("/proc/meminfo", "r");
-
- if (fp == NULL) {
- warn("Error opening meminfo file");
- return smprintf(UNKNOWN_STR);
- }
-
- fscanf(fp, "MemFree: %ld kB\n", &free);
- fclose(fp);
-
- return smprintf("%f", (float)free / 1024 / 1024);
-}
-
-static char *
-ram_perc(void)
-{
- int perc;
- long total, free, buffers, cached;
- FILE *fp = fopen("/proc/meminfo", "r");
-
- 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);
- perc = 100 * ((total - free) - (buffers + cached)) / total;
-
- return smprintf("%d%%", perc);
-}
-
-static char *
-ram_total(void)
-{
- long total;
- FILE *fp = fopen("/proc/meminfo", "r");
-
- if (fp == NULL) {
- warn("Error opening meminfo file");
- return smprintf(UNKNOWN_STR);
- }
-
- fscanf(fp, "MemTotal: %ld kB\n", &total);
- fclose(fp);
-
- return smprintf("%f", (float)total / 1024 / 1024);
-}
-
-static char *
-ram_used(void)
-{
- long free, total, buffers, cached, used;
- FILE *fp = fopen("/proc/meminfo", "r");
-
- 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)
-{
- FILE *fp = popen(command, "r");
- char buffer[64] = "\0";
-
- if (fp == NULL) {
- warn("Could not get command output for: %s", command);
- return smprintf(UNKNOWN_STR);
- }
-
- fgets(buffer, sizeof(buffer), fp);
- buffer[sizeof(buffer)-1] = '\0';
-
- pclose(fp);
- 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 *soundcard)
-{
- 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, soundcard);
- 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, "Master");
- elem = snd_mixer_find_selem(handle, s_elem);
-
- if (elem == NULL) {
- snd_mixer_selem_id_free(s_elem);
- snd_mixer_close(handle);
- warn("Failed to get volume percentage for: %s", soundcard);
- 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);
- }
-
- close(sockfd);
-
- if (strcmp((char *)wreq.u.essid.pointer, "") == 0)
- return smprintf(UNKNOWN_STR);
- else
- return smprintf("%s", (char *)wreq.u.essid.pointer);
-}
-