![Vincent Loupmon](/assets/img/avatar_default.png)
Changed get_datetime() a bit so it respects the user-configured locale (to use time formats with strings for days, months etc.) Same commit as last time, except it merges.
395 lines
9 KiB
C
395 lines
9 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
|
|
/* global libraries */
|
|
#include <alsa/asoundlib.h>
|
|
#include <fcntl.h>
|
|
#include <locale.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
#include <X11/Xlib.h>
|
|
|
|
/* local libraries */
|
|
#include "config.h"
|
|
|
|
/* check file macro */
|
|
#define CHECK_FILE(X,Y) do { \
|
|
if (stat(X,&Y) < 0) return -1; \
|
|
if (!S_ISREG(Y.st_mode)) return -1; \
|
|
} while (0);
|
|
|
|
/* functions */
|
|
int config_check();
|
|
void setstatus(char *str);
|
|
char *smprintf(char *fmt, ...);
|
|
char *get_battery();
|
|
char *get_cpu_temperature();
|
|
char *get_cpu_usage();
|
|
char *get_datetime();
|
|
char *get_ram_usage();
|
|
char *get_volume();
|
|
char *get_wifi_signal();
|
|
|
|
/* global variables */
|
|
static Display *dpy;
|
|
|
|
/* check configured paths */
|
|
int
|
|
config_check()
|
|
{
|
|
struct stat fs;
|
|
|
|
/* check all files in the config.h file */
|
|
CHECK_FILE(batterynowfile, fs);
|
|
CHECK_FILE(batteryfullfile, fs);
|
|
CHECK_FILE(tempfile, fs);
|
|
|
|
/* check update interval */
|
|
if (update_interval < 1)
|
|
return -1;
|
|
|
|
/* exit successfully */
|
|
return 0;
|
|
}
|
|
|
|
/* set statusbar (WM_NAME) */
|
|
void
|
|
setstatus(char *str)
|
|
{
|
|
XStoreName(dpy, DefaultRootWindow(dpy), str);
|
|
XSync(dpy, False);
|
|
}
|
|
|
|
/* smprintf function */
|
|
char *
|
|
smprintf(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 *
|
|
get_battery()
|
|
{
|
|
int now, full, perc;
|
|
FILE *fp;
|
|
|
|
/* open battery now file */
|
|
if (!(fp = fopen(batterynowfile, "r"))) {
|
|
fprintf(stderr, "Error opening battery file.");
|
|
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);
|
|
}
|
|
|
|
/* cpu temperature */
|
|
char *
|
|
get_cpu_temperature()
|
|
{
|
|
int temperature;
|
|
FILE *fp;
|
|
|
|
/* open temperature file */
|
|
if (!(fp = fopen(tempfile, "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);
|
|
}
|
|
|
|
/* cpu percentage */
|
|
char *
|
|
get_cpu_usage()
|
|
{
|
|
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);
|
|
}
|
|
|
|
/* date and time */
|
|
char *
|
|
get_datetime()
|
|
{
|
|
time_t tm;
|
|
size_t bufsize = 64;
|
|
char *buf = malloc(bufsize);
|
|
|
|
/* get time in format */
|
|
time(&tm);
|
|
setlocale(LC_TIME, "");
|
|
if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
|
|
setlocale(LC_TIME, "C");
|
|
fprintf(stderr, "Strftime failed.\n");
|
|
return smprintf("n/a");
|
|
}
|
|
|
|
setlocale(LC_TIME, "C");
|
|
/* return time */
|
|
return smprintf("%s", buf);
|
|
}
|
|
|
|
/* ram percentage */
|
|
char *
|
|
get_ram_usage()
|
|
{
|
|
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);
|
|
}
|
|
|
|
/* alsa volume percentage */
|
|
char *
|
|
get_volume()
|
|
{
|
|
int mute = 0;
|
|
long vol = 0, max = 0, min = 0;
|
|
|
|
/* get volume from alsa */
|
|
snd_mixer_t *handle;
|
|
snd_mixer_elem_t *pcm_mixer, *mas_mixer;
|
|
snd_mixer_selem_id_t *vol_info, *mute_info;
|
|
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(&vol_info);
|
|
snd_mixer_selem_id_malloc(&mute_info);
|
|
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);
|
|
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);
|
|
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 *
|
|
get_wifi_signal()
|
|
{
|
|
int bufsize = 255;
|
|
int strength;
|
|
char buf[bufsize];
|
|
char *datastart;
|
|
char path_start[16] = "/sys/class/net/";
|
|
char path_end[11] = "/operstate";
|
|
char path[32];
|
|
char status[5];
|
|
char needle[sizeof wificard + 1];
|
|
FILE *fp;
|
|
|
|
/* generate the path name */
|
|
memset(path, 0, sizeof path);
|
|
strcat(path, path_start);
|
|
strcat(path, wificard);
|
|
strcat(path, path_end);
|
|
|
|
/* 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);
|
|
}
|
|
|
|
/* main function */
|
|
int
|
|
main()
|
|
{
|
|
char status[1024];
|
|
char *battery = NULL;
|
|
char *cpu_temperature = NULL;
|
|
char *cpu_usage = NULL;
|
|
char *datetime = NULL;
|
|
char *ram_usage = NULL;
|
|
char *volume = NULL;
|
|
char *wifi_signal = NULL;
|
|
|
|
/* check config for sanity */
|
|
if (config_check() < 0) {
|
|
fprintf(stderr, "Config error, please check paths and interval and recompile!\n");
|
|
exit(1);
|
|
}
|
|
|
|
/* open display */
|
|
if (!(dpy = XOpenDisplay(0x0))) {
|
|
fprintf(stderr, "Cannot open display!\n");
|
|
exit(1);
|
|
}
|
|
|
|
/* return status every second */
|
|
for (;;) {
|
|
/* assign the values */
|
|
battery = get_battery();
|
|
cpu_temperature = get_cpu_temperature();
|
|
cpu_usage = get_cpu_usage();
|
|
datetime = get_datetime();
|
|
ram_usage = get_ram_usage();
|
|
volume = get_volume();
|
|
wifi_signal = get_wifi_signal();
|
|
|
|
/* return the status */
|
|
sprintf(status, FORMATSTRING, ARGUMENTS);
|
|
setstatus(status);
|
|
|
|
/* free the values */
|
|
free(battery);
|
|
free(cpu_temperature);
|
|
free(cpu_usage);
|
|
free(datetime);
|
|
free(ram_usage);
|
|
free(volume);
|
|
free(wifi_signal);
|
|
|
|
/* wait, "update_interval - 1" because of get_cpu_usage() which uses 1 second */
|
|
sleep(update_interval -1);
|
|
}
|
|
|
|
/* close display */
|
|
XCloseDisplay(dpy);
|
|
|
|
/* exit successfully */
|
|
return 0;
|
|
}
|