/* See LICENSE file for copyright and license details. */
-
-/* global libraries */
-#include <alsa/asoundlib.h>
-#include <arpa/inet.h>
-#include <fcntl.h>
-#include <ifaddrs.h>
-#include <limits.h>
-#include <linux/wireless.h>
-#include <locale.h>
-#include <netdb.h>
-#include <pwd.h>
-#include <stdarg.h>
+#include <errno.h>
+#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/statvfs.h>
-#include <sys/socket.h>
-#include <sys/types.h>
#include <time.h>
-#include <unistd.h>
#include <X11/Xlib.h>
-/* local headers */
+#include "arg.h"
#include "slstatus.h"
-#include "config.h"
-
-/* set statusbar */
-void
-setstatus(const char *str)
-{
- /* set WM_NAME via X11 */
- XStoreName(dpy, DefaultRootWindow(dpy), str);
- XSync(dpy, False);
-}
-
-/* smprintf function */
-char *
-smprintf(const char *fmt, ...)
-{
- va_list fmtargs;
- char *ret = NULL;
-
- va_start(fmtargs, fmt);
- if (vasprintf(&ret, fmt, fmtargs) < 0) {
- return NULL;
- }
- va_end(fmtargs);
-
- return ret;
-}
-
-/* battery percentage */
-char *
-battery_perc(const char *battery)
-{
- int now, full, perc;
- char batterynowfile[64] = "";
- char batteryfullfile[64] = "";
- FILE *fp;
-
- /* generate battery nowfile path */
- strcat(batterynowfile, batterypath);
- strcat(batterynowfile, battery);
- strcat(batterynowfile, "/");
- strcat(batterynowfile, batterynow);
-
- /* generate battery fullfile path */
- strcat(batteryfullfile, batterypath);
- strcat(batteryfullfile, battery);
- strcat(batteryfullfile, "/");
- strcat(batteryfullfile, batteryfull);
-
- /* open battery now file */
- if (!(fp = fopen(batterynowfile, "r"))) {
- fprintf(stderr, "Error opening battery file.%s", batterynowfile);
- return smprintf("n/a");
- }
-
- /* read value */
- fscanf(fp, "%i", &now);
-
- /* close battery now file */
- fclose(fp);
-
- /* open battery full file */
- if (!(fp = fopen(batteryfullfile, "r"))) {
- fprintf(stderr, "Error opening battery file.");
- return smprintf("n/a");
- }
-
- /* read value */
- fscanf(fp, "%i", &full);
-
- /* close battery full file */
- fclose(fp);
-
- /* calculate percent */
- perc = now / (full / 100);
-
- /* return perc as string */
- return smprintf("%d%%", perc);
-}
+#include "util.h"
-/* cpu percentage */
-char *
-cpu_perc(const char *null)
-{
- int perc;
- long double a[4], b[4];
- FILE *fp;
-
- /* open stat file */
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.");
- return smprintf("n/a");
- }
-
- /* read values */
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
-
- /* close stat file */
- fclose(fp);
-
- /* wait a second (for avg values) */
- sleep(1);
-
- /* open stat file */
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.");
- return smprintf("n/a");
- }
-
- /* read values */
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
-
- /* close stat file */
- fclose(fp);
-
- /* calculate avg in this second */
- 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 perc as string */
- return smprintf("%d%%", perc);
-}
+struct arg {
+ const char *(*func)();
+ const char *fmt;
+ const char *args;
+};
-/* date and time */
-char *
-datetime(const char *timeformat)
-{
- time_t tm;
- size_t bufsize = 64;
- char *buf = malloc(bufsize);
- if (buf == NULL) {
- fprintf(stderr, "Failed to get date/time");
- return smprintf("n/a");
- }
-
- /* get time in format */
- time(&tm);
- setlocale(LC_TIME, "");
- if (!strftime(buf, bufsize, timeformat, localtime(&tm))) {
- setlocale(LC_TIME, "C");
- free(buf);
- fprintf(stderr, "Strftime failed.\n");
- return smprintf("n/a");
- }
+char buf[1024];
+static int done;
+static Display *dpy;
- setlocale(LC_TIME, "C");
- /* return time */
- char *ret = smprintf("%s", buf);
- free(buf);
- return ret;
-}
-
-/* disk free */
-char *
-disk_free(const char *mountpoint)
-{
- struct statvfs fs;
-
- /* try to open mountpoint */
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf("n/a");
- }
-
- /* return free */
- return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
-}
-
-/* disk usage percentage */
-char *
-disk_perc(const char *mountpoint)
-{
- int perc = 0;
- struct statvfs fs;
-
- /* try to open mountpoint */
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf("n/a");
- }
-
- /* calculate percent */
- perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
-
- /* return perc */
- return smprintf("%d%%", perc);
-}
+#include "config.h"
-/* disk total */
-char *
-disk_total(const char *mountpoint)
+static void
+terminate(const int signo)
{
- struct statvfs fs;
+ (void)signo;
- /* try to open mountpoint */
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf("n/a");
- }
-
- /* return total */
- return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
+ done = 1;
}
-/* disk used */
-char *
-disk_used(const char *mountpoint)
+static void
+difftimespec(struct timespec *res, struct timespec *a, struct timespec *b)
{
- struct statvfs fs;
-
- /* try to open mountpoint */
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf("n/a");
- }
-
- /* return used */
- return smprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
+ res->tv_sec = a->tv_sec - b->tv_sec - (a->tv_nsec < b->tv_nsec);
+ res->tv_nsec = a->tv_nsec - b->tv_nsec +
+ (a->tv_nsec < b->tv_nsec) * 1E9;
}
-/* entropy available */
-char *
-entropy(const char *null)
+static void
+usage(void)
{
- int entropy = 0;
- FILE *fp;
-
- /* open entropy file */
- if (!(fp = fopen("/proc/sys/kernel/random/entropy_avail", "r"))) {
- fprintf(stderr, "Could not open entropy file.\n");
- return smprintf("n/a");
- }
-
- /* extract entropy */
- fscanf(fp, "%d", &entropy);
-
- /* close entropy file */
- fclose(fp);
-
- /* return entropy */
- return smprintf("%d", entropy);
+ die("usage: %s [-s]", argv0);
}
-/* gid */
-char *
-gid(const char *null)
-{
- gid_t gid;
+int
+main(int argc, char *argv[])
+{
+ struct sigaction act;
+ struct timespec start, current, diff, intspec, wait;
+ size_t i, len;
+ int sflag, ret;
+ char status[MAXLEN];
+ const char *res;
+
+ sflag = 0;
+ ARGBEGIN {
+ case 's':
+ sflag = 1;
+ break;
+ default:
+ usage();
+ } ARGEND
- if ((gid = getgid()) < 0) {
- fprintf(stderr, "Could no get gid.");
- return smprintf("n/a");
- } else {
- return smprintf("%d", gid);
+ if (argc) {
+ usage();
}
- return smprintf("n/a");
-}
+ memset(&act, 0, sizeof(act));
+ act.sa_handler = terminate;
+ sigaction(SIGINT, &act, NULL);
+ sigaction(SIGTERM, &act, NULL);
-/* 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("n/a");
+ if (!sflag && !(dpy = XOpenDisplay(NULL))) {
+ die("XOpenDisplay: Failed to open display");
}
- /* 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.");
- return smprintf("n/a");
- }
-
- /* get the ip address */
- for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
- if (ifa->ifa_addr == NULL) {
- continue;
+ while (!done) {
+ if (clock_gettime(CLOCK_MONOTONIC, &start) < 0) {
+ die("clock_gettime:");
}
- 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.");
- return smprintf("n/a");
+ status[0] = '\0';
+ for (i = len = 0; i < LEN(args); i++) {
+ if (!(res = args[i].func(args[i].args))) {
+ res = unknown_str;
+ }
+ if ((ret = esnprintf(status + len, sizeof(status) - len,
+ args[i].fmt, res)) < 0) {
+ break;
}
- return smprintf("%s", host);
+ len += ret;
}
- }
-
- /* free the address */
- freeifaddrs(ifaddr);
-
- /* return n/a if nothing works */
- return smprintf("n/a");
-}
-
-/* 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.");
- return smprintf("n/a");
- }
-
- /* 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);
-}
-
-/* ram percentage */
-char *
-ram_perc(const char *null)
-{
- int perc;
- long total, free, buffers, cached;
- FILE *fp;
-
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.");
- return smprintf("n/a");
- }
-
- /* read the values */
- 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);
-
- /* close meminfo file */
- fclose(fp);
-
- /* calculate percentage */
- perc = 100 * ((total - free) - (buffers + cached)) / total;
- /* return perc as string */
- return smprintf("%d%%", perc);
-}
-
-/* ram total */
-char *
-ram_total(const char *null)
-{
- long total;
- FILE *fp;
-
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.");
- return smprintf("n/a");
- }
-
- /* read the values */
- fscanf(fp, "MemTotal: %ld kB\n", &total);
-
- /* close meminfo file */
- fclose(fp);
-
- /* return total ram as string */
- return smprintf("%f", (float)total / 1024 / 1024);
-}
-
-/* ram used */
-char *
-ram_used(const char *null)
-{
- long free, total, buffers, cached, used;
- FILE *fp;
-
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.");
- return smprintf("n/a");
- }
-
- /* read the values */
- 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);
-
- /* close meminfo file */
- fclose(fp);
-
- /* calculate used */
- used = total - free - buffers - cached;
-
- /* return used ram as string */
- return smprintf("%f", (float)used / 1024 / 1024);
-}
-
-/* custom shell command */
-char *
-run_command(const char* command)
-{
- int good;
- FILE *fp;
- char buffer[64];
-
- /* try to open the command output */
- if (!(fp = popen(command, "r"))) {
- fprintf(stderr, "Could not get command output for: %s.\n", command);
- return smprintf("n/a");
- }
-
- /* get command output text, save it to buffer */
- fgets(buffer, sizeof(buffer) - 1, fp);
-
- /* close it again */
- pclose(fp);
-
- /* add nullchar at the end */
- for (int i = 0 ; i != sizeof(buffer); i++) {
- if (buffer[i] == '\0') {
- good = 1;
- break;
+ if (sflag) {
+ puts(status);
+ fflush(stdout);
+ if (ferror(stdout))
+ die("puts:");
+ } else {
+ if (XStoreName(dpy, DefaultRootWindow(dpy), status) < 0) {
+ die("XStoreName: Allocation failed");
+ }
+ XFlush(dpy);
}
- }
- if (good) {
- buffer[strlen(buffer) - 1] = '\0';
- }
-
- /* return the output */
- return smprintf("%s", buffer);
-}
-
-/* temperature */
-char *
-temp(const char *file)
-{
- int temperature;
- FILE *fp;
-
- /* open temperature file */
- if (!(fp = fopen(file, "r"))) {
- fprintf(stderr, "Could not open temperature file.\n");
- return smprintf("n/a");
- }
-
- /* extract temperature */
- fscanf(fp, "%d", &temperature);
-
- /* close temperature file */
- fclose(fp);
-
- /* return temperature in degrees */
- return smprintf("%d°C", temperature / 1000);
-}
-
-/* username */
-char *
-username(const char *null)
-{
- register struct passwd *pw;
- register uid_t uid;
-
- /* get the values */
- uid = geteuid();
- pw = getpwuid(uid);
-
- /* if it worked, return */
- if (pw) {
- return smprintf("%s", pw->pw_name);
- } else {
- fprintf(stderr, "Could not get username.\n");
- return smprintf("n/a");
- }
-
- return smprintf("n/a");
-}
-
-/* uid */
-char *
-uid(const char *null)
-{
- register uid_t uid;
-
- /* get the values */
- uid = geteuid();
-
- /* if it worked, return */
- if (uid) {
- return smprintf("%d", uid);
- } else {
- fprintf(stderr, "Could not get uid.\n");
- return smprintf("n/a");
- }
- return smprintf("n/a");
-}
-
-
-/* alsa volume percentage */
-char *
-vol_perc(const char *soundcard)
-{
- int mute = 0;
- long vol = 0, max = 0, min = 0;
- snd_mixer_t *handle;
- snd_mixer_elem_t *pcm_mixer, *mas_mixer;
- snd_mixer_selem_id_t *vol_info, *mute_info;
-
- /* open everything */
- snd_mixer_open(&handle, 0);
- snd_mixer_attach(handle, soundcard);
- snd_mixer_selem_register(handle, NULL, NULL);
- snd_mixer_load(handle);
-
- /* prepare everything */
- snd_mixer_selem_id_malloc(&vol_info);
- snd_mixer_selem_id_malloc(&mute_info);
- /* check */
- if (vol_info == NULL || mute_info == NULL) {
- fprintf(stderr, "Could not get alsa volume");
- return smprintf("n/a");
- }
- snd_mixer_selem_id_set_name(vol_info, channel);
- snd_mixer_selem_id_set_name(mute_info, channel);
- pcm_mixer = snd_mixer_find_selem(handle, vol_info);
- mas_mixer = snd_mixer_find_selem(handle, mute_info);
-
- /* get the info */
- snd_mixer_selem_get_playback_volume_range((snd_mixer_elem_t *)pcm_mixer, &min, &max);
- snd_mixer_selem_get_playback_volume((snd_mixer_elem_t *)pcm_mixer, SND_MIXER_SCHN_MONO, &vol);
- snd_mixer_selem_get_playback_switch(mas_mixer, SND_MIXER_SCHN_MONO, &mute);
-
- /* clean up */
- if (vol_info) {
- snd_mixer_selem_id_free(vol_info);
- }
- if (mute_info) {
- snd_mixer_selem_id_free(mute_info);
- }
- if (handle) {
- snd_mixer_close(handle);
- }
-
- /* return the string (mute) */
- if (!mute) {
- return smprintf("mute");
- } else {
- return smprintf("%d%%", (vol * 100) / max);
- }
-}
-
-/* wifi percentage */
-char *
-wifi_perc(const char *wificard)
-{
- int bufsize = 255;
- int strength;
- char buf[bufsize];
- char *datastart;
- char path[64];
- char status[5];
- char needle[sizeof wificard + 1];
- FILE *fp;
-
- /* generate the path name */
- memset(path, 0, sizeof path);
- strcat(path, "/sys/class/net/");
- strcat(path, wificard);
- strcat(path, "/operstate");
-
- /* open wifi file */
- if(!(fp = fopen(path, "r"))) {
- fprintf(stderr, "Error opening wifi operstate file.");
- return smprintf("n/a");
- }
-
- /* read the status */
- fgets(status, 5, fp);
-
- /* close wifi file */
- fclose(fp);
-
- /* check if interface down */
- if(strcmp(status, "up\n") != 0) {
- return smprintf("n/a");
- }
-
- /* open wifi file */
- if (!(fp = fopen("/proc/net/wireless", "r"))) {
- fprintf(stderr, "Error opening wireless file.");
- return smprintf("n/a");
- }
-
- /* extract the signal strength */
- strcpy(needle, wificard);
- strcat(needle, ":");
- fgets(buf, bufsize, fp);
- fgets(buf, bufsize, fp);
- fgets(buf, bufsize, fp);
- if ((datastart = strstr(buf, needle)) != NULL) {
- datastart = strstr(buf, ":");
- sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &strength);
- }
-
- /* close wifi file */
- fclose(fp);
-
- /* return strength in percent */
- return smprintf("%d%%", strength);
-}
-
-/* wifi essid */
-char *
-wifi_essid(const char *wificard)
-{
- char id[IW_ESSID_MAX_SIZE+1];
- int sockfd;
- struct iwreq wreq;
-
- /* prepare */
- memset(&wreq, 0, sizeof(struct iwreq));
- wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
-
- /* set the interface */
- sprintf(wreq.ifr_name, wificard);
-
- /* check */
- if((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
- fprintf(stderr, "Cannot open socket for interface: %s\n", wificard);
- return smprintf("n/a");
- }
- wreq.u.essid.pointer = id;
- if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
- fprintf(stderr, "Get ESSID ioctl failed for interface %s\n", wificard);
- return smprintf("n/a");
- }
-
- /* return the essid */
- if (strcmp((char *)wreq.u.essid.pointer, "") == 0) {
- return smprintf("n/a");
- } else {
- return smprintf("%s", (char *)wreq.u.essid.pointer);
- }
-}
-
-/* main function */
-int
-main(void)
-{
- char status_string[1024];
- struct arg argument;
-
- /* try to open display */
- if (!(dpy = XOpenDisplay(0x0))) {
- fprintf(stderr, "Cannot open display!\n");
- exit(1);
- }
+ if (!done) {
+ if (clock_gettime(CLOCK_MONOTONIC, ¤t) < 0) {
+ die("clock_gettime:");
+ }
+ difftimespec(&diff, ¤t, &start);
- /* return status every interval */
- for (;;) {
- /* clear the string */
- memset(status_string, 0, sizeof(status_string));
+ intspec.tv_sec = interval / 1000;
+ intspec.tv_nsec = (interval % 1000) * 1E6;
+ difftimespec(&wait, &intspec, &diff);
- /* generate status_string */
- for (size_t i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
- argument = args[i];
- char *res = argument.func(argument.args);
- char *element = smprintf(argument.format, res);
- if (element == NULL) {
- element = smprintf("n/a");
- fprintf(stderr, "Failed to format output.");
+ if (wait.tv_sec >= 0) {
+ if (nanosleep(&wait, NULL) < 0 &&
+ errno != EINTR) {
+ die("nanosleep:");
+ }
}
- strcat(status_string, element);
- free(res);
- free(element);
}
-
- /* return the statusbar */
- setstatus(status_string);
-
- /* wait, "update_interval - 1" because of get_cpu_usage() which uses 1 second */
- sleep(update_interval -1);
}
- /* close display */
- XCloseDisplay(dpy);
+ if (!sflag) {
+ XStoreName(dpy, DefaultRootWindow(dpy), NULL);
+ if (XCloseDisplay(dpy) < 0) {
+ die("XCloseDisplay: Failed to close display");
+ }
+ }
- /* exit successfully */
return 0;
}