655 lines
13 KiB
C
655 lines
13 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <alsa/asoundlib.h>
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#include <err.h>
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#include <fcntl.h>
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#include <ifaddrs.h>
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#include <limits.h>
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#include <linux/wireless.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/statvfs.h>
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#include <sys/socket.h>
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#include <sys/sysinfo.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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#include <X11/Xlib.h>
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#undef strlcat
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#undef strlcpy
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#include "strlcat.h"
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#include "strlcpy.h"
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#include "concat.h"
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char concat[];
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struct arg {
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char *(*func)();
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const char *format;
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const char *args;
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};
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static char *smprintf(const char *, ...);
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static char *battery_perc(const char *);
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static char *battery_state(const char *);
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static char *cpu_perc(void);
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static char *datetime(const char *);
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static char *disk_free(const char *);
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static char *disk_perc(const char *);
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static char *disk_total(const char *);
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static char *disk_used(const char *);
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static char *entropy(void);
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static char *gid(void);
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static char *hostname(void);
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static char *ip(const char *);
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static char *load_avg(void);
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static char *ram_free(void);
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static char *ram_perc(void);
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static char *ram_used(void);
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static char *ram_total(void);
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static char *run_command(const char *);
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static char *temp(const char *);
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static char *uid(void);
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static char *uptime(void);
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static char *username(void);
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static char *vol_perc(const char *);
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static char *wifi_perc(const char *);
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static char *wifi_essid(const char *);
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static void sighandler(const int);
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static unsigned short int delay, done;
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static Display *dpy;
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#include "config.h"
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static char *
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smprintf(const char *fmt, ...)
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{
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va_list ap;
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char *ret;
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int len;
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va_start(ap, fmt);
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len = vsnprintf(NULL, 0, fmt, ap);
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va_end(ap);
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ret = malloc(++len);
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if (ret == NULL) {
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perror("malloc");
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exit(1);
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}
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va_start(ap, fmt);
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vsnprintf(ret, len, fmt, ap);
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va_end(ap);
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return ret;
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}
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static char *
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battery_perc(const char *battery)
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{
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int perc;
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FILE *fp;
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ccat(3, "/sys/class/power_supply/", battery, "/capacity");
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fp = fopen(concat, "r");
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if (fp == NULL) {
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warn("Error opening battery file: %s", concat);
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return smprintf(UNKNOWN_STR);
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}
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fscanf(fp, "%i", &perc);
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fclose(fp);
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return smprintf("%d%%", perc);
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}
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static char *
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battery_state(const char *battery)
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{
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char state[12];
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FILE *fp;
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if (!state) {
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warn("Failed to get battery state.");
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return smprintf(UNKNOWN_STR);
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}
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ccat(3, "/sys/class/power_supply/", battery, "/status");
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fp = fopen(concat, "r");
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if (fp == NULL) {
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warn("Error opening battery file: %s", concat);
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return smprintf(UNKNOWN_STR);
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}
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fscanf(fp, "%12s", state);
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fclose(fp);
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if (strcmp(state, "Charging") == 0)
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return smprintf("+");
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else if (strcmp(state, "Discharging") == 0)
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return smprintf("-");
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else if (strcmp(state, "Full") == 0)
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return smprintf("=");
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else
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return smprintf("?");
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}
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static char *
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cpu_perc(void)
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{
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int perc;
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long double a[4], b[4];
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FILE *fp = fopen("/proc/stat","r");
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if (fp == NULL) {
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warn("Error opening stat file");
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return smprintf(UNKNOWN_STR);
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}
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fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
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fclose(fp);
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delay = (UPDATE_INTERVAL - (UPDATE_INTERVAL - 1));
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sleep(delay);
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fp = fopen("/proc/stat","r");
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if (fp == NULL) {
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warn("Error opening stat file");
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return smprintf(UNKNOWN_STR);
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}
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fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
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fclose(fp);
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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]));
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return smprintf("%d%%", perc);
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}
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static char *
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datetime(const char *timeformat)
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{
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time_t t;
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char timestr[80];
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t = time(NULL);
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if (strftime(timestr, sizeof(timestr), timeformat, localtime(&t)) == 0)
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return smprintf(UNKNOWN_STR);
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return smprintf("%s", timestr);
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}
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static char *
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disk_free(const char *mountpoint)
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{
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struct statvfs fs;
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if (statvfs(mountpoint, &fs) < 0) {
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warn("Could not get filesystem info");
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return smprintf(UNKNOWN_STR);
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}
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return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
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}
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static char *
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disk_perc(const char *mountpoint)
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{
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int perc = 0;
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struct statvfs fs;
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if (statvfs(mountpoint, &fs) < 0) {
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warn("Could not get filesystem info");
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return smprintf(UNKNOWN_STR);
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}
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perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
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return smprintf("%d%%", perc);
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}
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static char *
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disk_total(const char *mountpoint)
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{
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struct statvfs fs;
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if (statvfs(mountpoint, &fs) < 0) {
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warn("Could not get filesystem info");
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return smprintf(UNKNOWN_STR);
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}
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return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
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}
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static char *
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disk_used(const char *mountpoint)
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{
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struct statvfs fs;
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if (statvfs(mountpoint, &fs) < 0) {
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warn("Could not get filesystem info");
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return smprintf(UNKNOWN_STR);
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}
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return smprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
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}
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static char *
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entropy(void)
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{
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int entropy = 0;
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FILE *fp = fopen("/proc/sys/kernel/random/entropy_avail", "r");
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if (fp == NULL) {
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warn("Could not open entropy file");
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return smprintf(UNKNOWN_STR);
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}
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fscanf(fp, "%d", &entropy);
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fclose(fp);
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return smprintf("%d", entropy);
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}
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static char *
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gid(void)
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{
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return smprintf("%d", getgid());
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}
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static char *
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hostname(void)
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{
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char hostname[HOST_NAME_MAX];
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FILE *fp = fopen("/proc/sys/kernel/hostname", "r");
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if (fp == NULL) {
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warn("Could not open hostname file");
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return smprintf(UNKNOWN_STR);
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}
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fgets(hostname, sizeof(hostname), fp);
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/* FIXME: needs improvement */
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memset(&hostname[strlen(hostname)], '\0',
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sizeof(hostname) - strlen(hostname));
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fclose(fp);
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return smprintf("%s", hostname);
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}
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static char *
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ip(const char *interface)
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{
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struct ifaddrs *ifaddr, *ifa;
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int s;
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char host[NI_MAXHOST];
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if (getifaddrs(&ifaddr) == -1) {
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warn("Error getting IP address");
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return smprintf(UNKNOWN_STR);
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}
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for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
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if (ifa->ifa_addr == NULL)
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continue;
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s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST,
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NULL, 0, NI_NUMERICHOST);
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if ((strcmp(ifa->ifa_name, interface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) {
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if (s != 0) {
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warnx("Error getting IP address.");
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return smprintf(UNKNOWN_STR);
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}
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return smprintf("%s", host);
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}
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}
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freeifaddrs(ifaddr);
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return smprintf(UNKNOWN_STR);
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}
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static char *
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load_avg(void)
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{
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double avgs[3];
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if (getloadavg(avgs, 3) < 0) {
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warnx("Error getting load avg.");
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return smprintf(UNKNOWN_STR);
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}
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return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
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}
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static char *
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ram_free(void)
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{
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long free;
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FILE *fp = fopen("/proc/meminfo", "r");
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if (fp == NULL) {
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warn("Error opening meminfo file");
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return smprintf(UNKNOWN_STR);
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}
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fscanf(fp, "MemFree: %ld kB\n", &free);
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fclose(fp);
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return smprintf("%f", (float)free / 1024 / 1024);
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}
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static char *
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ram_perc(void)
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{
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int perc;
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long total, free, buffers, cached;
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FILE *fp = fopen("/proc/meminfo", "r");
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if (fp == NULL) {
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warn("Error opening meminfo file");
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return smprintf(UNKNOWN_STR);
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}
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fscanf(fp, "MemTotal: %ld kB\n", &total);
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fscanf(fp, "MemFree: %ld kB\n", &free);
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fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n", &buffers, &buffers);
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fscanf(fp, "Cached: %ld kB\n", &cached);
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fclose(fp);
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perc = 100 * ((total - free) - (buffers + cached)) / total;
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return smprintf("%d%%", perc);
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}
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static char *
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ram_total(void)
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{
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long total;
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FILE *fp = fopen("/proc/meminfo", "r");
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if (fp == NULL) {
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warn("Error opening meminfo file");
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return smprintf(UNKNOWN_STR);
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}
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fscanf(fp, "MemTotal: %ld kB\n", &total);
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fclose(fp);
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return smprintf("%f", (float)total / 1024 / 1024);
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}
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static char *
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ram_used(void)
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{
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long free, total, buffers, cached, used;
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FILE *fp = fopen("/proc/meminfo", "r");
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if (fp == NULL) {
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warn("Error opening meminfo file");
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return smprintf(UNKNOWN_STR);
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}
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fscanf(fp, "MemTotal: %ld kB\n", &total);
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fscanf(fp, "MemFree: %ld kB\n", &free);
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fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n", &buffers, &buffers);
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fscanf(fp, "Cached: %ld kB\n", &cached);
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fclose(fp);
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used = total - free - buffers - cached;
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return smprintf("%f", (float)used / 1024 / 1024);
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}
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static char *
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run_command(const char* command)
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{
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int good;
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FILE *fp = popen(command, "r");
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char buffer[64] = "";
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if (fp == NULL) {
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warn("Could not get command output for: %s", command);
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return smprintf(UNKNOWN_STR);
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}
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fgets(buffer, sizeof(buffer)-1, fp);
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pclose(fp);
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for (int i = 0 ; i != sizeof(buffer); i++) {
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if (buffer[i] == '\0') {
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good = 1;
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break;
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}
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}
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if (good)
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buffer[strlen(buffer)-1] = '\0';
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return smprintf("%s", buffer);
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}
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static char *
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temp(const char *file)
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{
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int temperature;
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FILE *fp = fopen(file, "r");
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if (fp == NULL) {
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warn("Could not open temperature file");
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return smprintf(UNKNOWN_STR);
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}
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fscanf(fp, "%d", &temperature);
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fclose(fp);
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return smprintf("%d°C", temperature / 1000);
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}
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static char *
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uptime(void)
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{
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struct sysinfo info;
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int hours = 0;
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int minutes = 0;
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sysinfo(&info);
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hours = info.uptime / 3600;
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minutes = (info.uptime - hours * 3600 ) / 60;
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return smprintf("%dh %dm", hours, minutes);
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}
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static char *
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username(void)
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{
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uid_t uid = geteuid();
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struct passwd *pw = getpwuid(uid);
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if (pw == NULL) {
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warn("Could not get username");
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return smprintf(UNKNOWN_STR);
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}
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return smprintf("%s", pw->pw_name);
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}
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static char *
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uid(void)
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{
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return smprintf("%d", geteuid());
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}
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static char *
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vol_perc(const char *soundcard)
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{
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long int vol, max, min;
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snd_mixer_t *handle;
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snd_mixer_elem_t *elem;
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snd_mixer_selem_id_t *s_elem;
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snd_mixer_open(&handle, 0);
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snd_mixer_attach(handle, soundcard);
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snd_mixer_selem_register(handle, NULL, NULL);
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snd_mixer_load(handle);
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snd_mixer_selem_id_malloc(&s_elem);
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snd_mixer_selem_id_set_name(s_elem, "Master");
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elem = snd_mixer_find_selem(handle, s_elem);
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if (elem == NULL) {
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snd_mixer_selem_id_free(s_elem);
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snd_mixer_close(handle);
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warn("Failed to get volume percentage for: %s", soundcard);
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return smprintf(UNKNOWN_STR);
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}
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snd_mixer_handle_events(handle);
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snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
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snd_mixer_selem_get_playback_volume(elem, 0, &vol);
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snd_mixer_selem_id_free(s_elem);
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snd_mixer_close(handle);
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return smprintf("%d%%", ((uint_fast16_t)(vol * 100) / max));
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}
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static char *
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wifi_perc(const char *wificard)
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{
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int strength;
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char buf[255];
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char *datastart;
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char status[5];
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FILE *fp;
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ccat(3, "/sys/class/net/", wificard, "/operstate");
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fp = fopen(concat, "r");
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if (fp == NULL) {
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warn("Error opening wifi operstate file");
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return smprintf(UNKNOWN_STR);
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}
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fgets(status, 5, fp);
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fclose(fp);
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if(strcmp(status, "up\n") != 0)
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return smprintf(UNKNOWN_STR);
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fp = fopen("/proc/net/wireless", "r");
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if (fp == NULL) {
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warn("Error opening wireless file");
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return smprintf(UNKNOWN_STR);
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}
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ccat(2, wificard, ":");
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fgets(buf, sizeof(buf), fp);
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fgets(buf, sizeof(buf), fp);
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fgets(buf, sizeof(buf), fp);
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datastart = strstr(buf, concat);
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if (datastart != NULL) {
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datastart = strstr(buf, ":");
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sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &strength);
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}
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fclose(fp);
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return smprintf("%d%%", strength);
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}
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static char *
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wifi_essid(const char *wificard)
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{
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|
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);
|
|
}
|
|
|
|
static void
|
|
sighandler(const int signo)
|
|
{
|
|
if (signo == SIGTERM || signo == SIGINT)
|
|
done = 1;
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
unsigned short int i;
|
|
char status_string[4096];
|
|
char *res, *element;
|
|
struct arg argument;
|
|
struct sigaction act;
|
|
|
|
memset(&act, 0, sizeof(act));
|
|
act.sa_handler = sighandler;
|
|
sigaction(SIGINT, &act, 0);
|
|
sigaction(SIGTERM, &act, 0);
|
|
|
|
dpy = XOpenDisplay(NULL);
|
|
|
|
while (!done) {
|
|
status_string[0] = '\0';
|
|
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;
|
|
}
|
|
|
|
XStoreName(dpy, DefaultRootWindow(dpy), NULL);
|
|
XSync(dpy, False);
|
|
|
|
XCloseDisplay(dpy);
|
|
|
|
return 0;
|
|
}
|