/* See LICENSE file for copyright and license details. */
-/* global libraries */
-#include <alsa/asoundlib.h>
-#include <arpa/inet.h>
+#include <dirent.h>
+#include <err.h>
#include <fcntl.h>
#include <ifaddrs.h>
#include <limits.h>
#include <locale.h>
#include <netdb.h>
#include <pwd.h>
+#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <sys/socket.h>
+#include <sys/soundcard.h>
#include <sys/sysinfo.h>
#include <sys/types.h>
+#include <sys/utsname.h>
#include <time.h>
#include <unistd.h>
#include <X11/Xlib.h>
-#undef strlcat
-#undef strlcpy
+#include "arg.h"
-#include "strlcat.h"
-#include "strlcpy.h"
-
-/* statusbar configuration type and struct */
-typedef char *(*op_fun) (const char *);
struct arg {
- op_fun func;
- const char *format;
+ const char *(*func)();
+ const char *fmt;
const char *args;
};
-/* function declarations */
-void setstatus(const char *str);
-char *smprintf(const char *fmt, ...);
-char *battery_perc(const char *battery);
-char *cpu_perc(const char *null);
-char *datetime(const char *timeformat);
-char *disk_free(const char *mountpoint);
-char *disk_perc(const char *mountpoint);
-char *disk_total(const char *mountpoint);
-char *disk_used(const char *mountpoint);
-char *entropy(const char *null);
-char *gid(const char *null);
-char *hostname(const char *null);
-char *ip(const char *interface);
-char *load_avg(const char *null);
-char *ram_free(const char *null);
-char *ram_perc(const char *null);
-char *ram_used(const char *null);
-char *ram_total(const char *null);
-char *run_command(const char *command);
-char *temp(const char *file);
-char *uid(const char *null);
-char *uptime(const char *null);
-char *username(const char *null);
-char *vol_perc(const char *soundcard);
-char *wifi_perc(const char *wificard);
-char *wifi_essid(const char *wificard);
-
-/* global variables */
+static const char *bprintf(const char *fmt, ...);
+static const char *battery_perc(const char *bat);
+static const char *battery_power(const char *bat);
+static const char *battery_state(const char *bat);
+static const char *cpu_freq(void);
+static const char *cpu_perc(void);
+static const char *datetime(const char *fmt);
+static const char *disk_free(const char *mnt);
+static const char *disk_perc(const char *mnt);
+static const char *disk_total(const char *mnt);
+static const char *disk_used(const char *mnt);
+static const char *entropy(void);
+static const char *gid(void);
+static const char *hostname(void);
+static const char *ip(const char *iface);
+static const char *kernel_release(void);
+static const char *keyboard_indicators(void);
+static const char *load_avg(void);
+static const char *num_files(const char *dir);
+static const char *ram_free(void);
+static const char *ram_perc(void);
+static const char *ram_used(void);
+static const char *ram_total(void);
+static const char *run_command(const char *cmd);
+static const char *swap_free(void);
+static const char *swap_perc(void);
+static const char *swap_used(void);
+static const char *swap_total(void);
+static const char *temp(const char *file);
+static const char *uid(void);
+static const char *uptime(void);
+static const char *username(void);
+static const char *vol_perc(const char *card);
+static const char *wifi_perc(const char *iface);
+static const char *wifi_essid(const char *iface);
+static void sighandler(const int signo);
+static void usage(void);
+
+char *argv0;
+static unsigned short int delay = 0;
+static unsigned short int done;
+static unsigned short int oflag, nflag;
static Display *dpy;
-/* configuration header */
#include "config.h"
-/* set statusbar */
-void
-setstatus(const char *str)
-{
- /* set WM_NAME via X11 */
- XStoreName(dpy, DefaultRootWindow(dpy), str);
- XSync(dpy, False);
-}
+static char buf[MAXLEN];
-/* smprintf function */
-char *
-smprintf(const char *fmt, ...)
+static const char *
+bprintf(const char *fmt, ...)
{
- va_list fmtargs;
- char *ret = NULL;
+ va_list ap;
+ size_t len;
- va_start(fmtargs, fmt);
- if (vasprintf(&ret, fmt, fmtargs) < 0)
- return NULL;
- va_end(fmtargs);
+ va_start(ap, fmt);
+ len = vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
+ va_end(ap);
- return ret;
+ if (len >= sizeof(buf))
+ buf[sizeof(buf)-1] = '\0';
+
+ return buf;
}
-/* battery percentage */
-char *
-battery_perc(const char *battery)
+static const char *
+battery_perc(const char *bat)
{
- int now, full, perc;
- char batterynowfile[64] = "";
- char batteryfullfile[64] = "";
+ int n, perc;
+ char path[PATH_MAX];
FILE *fp;
- /* generate battery nowfile path */
- strlcat(batterynowfile, batterypath, sizeof(batterynowfile));
- strlcat(batterynowfile, battery, sizeof(batterynowfile));
- strlcat(batterynowfile, "/", sizeof(batterynowfile));
- strlcat(batterynowfile, batterynow, sizeof(batterynowfile));
+ snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/capacity");
+ fp = fopen(path, "r");
+ if (fp == NULL) {
+ warn("Failed to open file %s", path);
+ return UNKNOWN_STR;
+ }
+ n = fscanf(fp, "%i", &perc);
+ fclose(fp);
+ if (n != 1)
+ return UNKNOWN_STR;
+
+ return bprintf("%d", perc);
+}
- /* generate battery fullfile path */
- strlcat(batteryfullfile, batterypath, sizeof(batteryfullfile));
- strlcat(batteryfullfile, battery, sizeof(batteryfullfile));
- strlcat(batteryfullfile, "/", sizeof(batteryfullfile));
- strlcat(batteryfullfile, batteryfull, sizeof(batteryfullfile));
+static const char *
+battery_power(const char *bat)
+{
+ char path[PATH_MAX];
+ FILE *fp;
+ int n, watts;
- /* open battery now file */
- if (!(fp = fopen(batterynowfile, "r"))) {
- fprintf(stderr, "Error opening battery file: %s.\n", batterynowfile);
- return smprintf(unknowntext);
+ snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/power_now");
+ fp = fopen(path, "r");
+ if (fp == NULL) {
+ warn("Failed to open file %s", path);
+ return UNKNOWN_STR;
}
+ n = fscanf(fp, "%i", &watts);
+ fclose(fp);
+ if (n != 1)
+ return UNKNOWN_STR;
- /* read value */
- fscanf(fp, "%i", &now);
+ return bprintf("%d", (watts + 500000) / 1000000);
+}
- /* close battery now file */
- fclose(fp);
+static const char *
+battery_state(const char *bat)
+{
+ char path[PATH_MAX];
+ char state[12];
+ FILE *fp;
+ int n;
- /* open battery full file */
- if (!(fp = fopen(batteryfullfile, "r"))) {
- fprintf(stderr, "Error opening battery file.\n");
- return smprintf(unknowntext);
+ snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/status");
+ fp = fopen(path, "r");
+ if (fp == NULL) {
+ warn("Failed to open file %s", path);
+ return UNKNOWN_STR;
}
+ n = fscanf(fp, "%12s", state);
+ fclose(fp);
+ if (n != 1)
+ return UNKNOWN_STR;
+
+ if (strcmp(state, "Charging") == 0) {
+ return "+";
+ } else if (strcmp(state, "Discharging") == 0) {
+ return "-";
+ } else if (strcmp(state, "Full") == 0) {
+ return "=";
+ } else if (strcmp(state, "Unknown") == 0) {
+ return "/";
+ } else {
+ return "?";
+ }
+}
- /* read value */
- fscanf(fp, "%i", &full);
+static const char *
+cpu_freq(void)
+{
+ int n, freq;
+ FILE *fp;
- /* close battery full file */
+ fp = fopen("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
+ return UNKNOWN_STR;
+ }
+ n = fscanf(fp, "%i", &freq);
fclose(fp);
+ if (n != 1)
+ return UNKNOWN_STR;
- /* calculate percent */
- perc = now / (full / 100);
-
- /* return perc as string */
- return smprintf("%d%%", perc);
+ return bprintf("%d", (freq + 500) / 1000);
}
-/* cpu percentage */
-char *
-cpu_perc(const char *null)
+static const char *
+cpu_perc(void)
{
- int perc;
+ int n, perc;
long double a[4], b[4];
FILE *fp;
- /* open stat file */
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.\n");
- return smprintf(unknowntext);
+ fp = fopen("/proc/stat", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/stat");
+ return UNKNOWN_STR;
}
-
- /* read values */
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
-
- /* close stat file */
+ n = fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
fclose(fp);
+ if (n != 4)
+ return UNKNOWN_STR;
- /* wait a second (for avg values) */
- sleep(1);
+ delay++;
+ sleep(delay);
- /* open stat file */
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.\n");
- return smprintf(unknowntext);
+ fp = fopen("/proc/stat", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/stat");
+ return UNKNOWN_STR;
}
-
- /* read values */
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
-
- /* close stat file */
+ n = fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
fclose(fp);
+ if (n != 4)
+ return UNKNOWN_STR;
- /* 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);
+ return bprintf("%d", perc);
}
-/* date and time */
-char *
-datetime(const char *timeformat)
+static const char *
+datetime(const char *fmt)
{
- time_t tm;
- size_t bufsize = 64;
- char *buf = malloc(bufsize);
- if (buf == NULL) {
- fprintf(stderr, "Failed to get date/time.\n");
- return smprintf(unknowntext);
- }
+ time_t t;
- /* 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(unknowntext);
- }
+ t = time(NULL);
+ if (strftime(buf, sizeof(buf), fmt, localtime(&t)) == 0)
+ return UNKNOWN_STR;
- setlocale(LC_TIME, "C");
- /* return time */
- char *ret = smprintf("%s", buf);
- free(buf);
- return ret;
+ return buf;
}
-/* disk free */
-char *
-disk_free(const char *mountpoint)
+static const char *
+disk_free(const char *mnt)
{
struct statvfs fs;
- /* try to open mountpoint */
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
+ if (statvfs(mnt, &fs) < 0) {
+ warn("Failed to get filesystem info");
+ return UNKNOWN_STR;
}
- /* return free */
- return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
+ return bprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
}
-/* disk usage percentage */
-char *
-disk_perc(const char *mountpoint)
+static const char *
+disk_perc(const char *mnt)
{
- int perc = 0;
+ int perc;
struct statvfs fs;
- /* try to open mountpoint */
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
+ if (statvfs(mnt, &fs) < 0) {
+ warn("Failed to get filesystem info");
+ return UNKNOWN_STR;
}
- /* calculate percent */
perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
- /* return perc */
- return smprintf("%d%%", perc);
+ return bprintf("%d", perc);
}
-/* disk total */
-char *
-disk_total(const char *mountpoint)
+static const char *
+disk_total(const char *mnt)
{
struct statvfs fs;
- /* try to open mountpoint */
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
+ if (statvfs(mnt, &fs) < 0) {
+ warn("Failed to get filesystem info");
+ return UNKNOWN_STR;
}
- /* return total */
- return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
+ return bprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
}
-/* disk used */
-char *
-disk_used(const char *mountpoint)
+static const char *
+disk_used(const char *mnt)
{
struct statvfs fs;
- /* try to open mountpoint */
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
+ if (statvfs(mnt, &fs) < 0) {
+ warn("Failed to get filesystem info");
+ return UNKNOWN_STR;
}
- /* return used */
- return smprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
+ return bprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
}
-/* entropy available */
-char *
-entropy(const char *null)
+static const char *
+entropy(void)
{
- int entropy = 0;
+ int n, num;
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(unknowntext);
+ fp= fopen("/proc/sys/kernel/random/entropy_avail", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/sys/kernel/random/entropy_avail");
+ return UNKNOWN_STR;
}
-
- /* extract entropy */
- fscanf(fp, "%d", &entropy);
-
- /* close entropy file */
+ n = fscanf(fp, "%d", &num);
fclose(fp);
+ if (n != 1)
+ return UNKNOWN_STR;
- /* return entropy */
- return smprintf("%d", entropy);
+ return bprintf("%d", num);
}
-/* gid */
-char *
-gid(const char *null)
+static const char *
+gid(void)
{
- gid_t gid;
-
- if ((gid = getgid()) < 0) {
- fprintf(stderr, "Could no get gid.\n");
- return smprintf(unknowntext);
- } else {
- return smprintf("%d", gid);
- }
-
- return smprintf(unknowntext);
+ return bprintf("%d", getgid());
}
-/* hostname */
-char *
-hostname(const char *null)
+static const char *
+hostname(void)
{
- 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(unknowntext);
+ if (gethostname(buf, sizeof(buf)) == -1) {
+ warn("hostname");
+ return UNKNOWN_STR;
}
- /* extract hostname */
- fscanf(fp, "%s\n", hostname);
-
- /* close hostname file */
- fclose(fp);
-
- /* return entropy */
- return smprintf("%s", hostname);
+ return buf;
}
-/* ip address */
-char *
-ip(const char *interface)
+static const char *
+ip(const char *iface)
{
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.\n");
- return smprintf(unknowntext);
+ warn("Failed to get IP address for interface %s", iface);
+ return UNKNOWN_STR;
}
- /* get the ip address */
for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
- if (ifa->ifa_addr == NULL)
+ 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 ((strcmp(ifa->ifa_name, iface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) {
if (s != 0) {
- fprintf(stderr, "Error getting IP address.\n");
- return smprintf(unknowntext);
+ warnx("Failed to get IP address for interface %s", iface);
+ return UNKNOWN_STR;
}
- return smprintf("%s", host);
+ return bprintf("%s", host);
}
}
- /* free the address */
freeifaddrs(ifaddr);
- return smprintf(unknowntext);
+ return UNKNOWN_STR;
+}
+
+static const char *
+kernel_release(void)
+{
+ struct utsname udata;
+
+ if (uname(&udata) < 0) {
+ return UNKNOWN_STR;
+ }
+
+ return bprintf("%s", udata.release);
+}
+
+static const char *
+keyboard_indicators(void)
+{
+ Display *dpy = XOpenDisplay(NULL);
+ XKeyboardState state;
+ XGetKeyboardControl(dpy, &state);
+ XCloseDisplay(dpy);
+
+ switch (state.led_mask) {
+ case 1:
+ return "c";
+ case 2:
+ return "n";
+ case 3:
+ return "cn";
+ default:
+ return "";
+ }
}
-/* load avg */
-char *
-load_avg(const char *null)
+static const char *
+load_avg(void)
{
double avgs[3];
- /* try to get load avg */
if (getloadavg(avgs, 3) < 0) {
- fprintf(stderr, "Error getting load avg.\n");
- return smprintf(unknowntext);
+ warnx("Failed to get the load avg");
+ return UNKNOWN_STR;
}
- /* return it */
- return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
+ return bprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
}
-/* ram free */
-char *
-ram_free(const char *null)
+static const char *
+num_files(const char *dir)
{
- long free;
- FILE *fp;
+ struct dirent *dp;
+ DIR *fd;
+ int num = 0;
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
+ if ((fd = opendir(dir)) == NULL) {
+ warn("Failed to get number of files in directory %s", dir);
+ return UNKNOWN_STR;
}
- /* read the values */
- fscanf(fp, "MemFree: %ld kB\n", &free);
+ while ((dp = readdir(fd)) != NULL) {
+ if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
+ continue; /* skip self and parent */
+ num++;
+ }
- /* close meminfo file */
- fclose(fp);
+ closedir(fd);
- /* return free ram as string */
- return smprintf("%f", (float)free / 1024 / 1024);
+ return bprintf("%d", num);
}
-/* ram percentage */
-char *
-ram_perc(const char *null)
+static const char *
+ram_free(void)
{
- int perc;
- long total, free, buffers, cached;
+ long free;
FILE *fp;
+ int n;
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
+ fp = fopen("/proc/meminfo", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/meminfo");
+ return UNKNOWN_STR;
}
+ n = fscanf(fp, "MemFree: %ld kB\n", &free);
+ fclose(fp);
+ if (n != 1)
+ return UNKNOWN_STR;
- /* 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);
+ return bprintf("%f", (float)free / 1024 / 1024);
+}
- /* close meminfo file */
+static const char *
+ram_perc(void)
+{
+ long total, free, buffers, cached;
+ FILE *fp;
+
+ fp = fopen("/proc/meminfo", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/meminfo");
+ return UNKNOWN_STR;
+ }
+ if (fscanf(fp, "MemTotal: %ld kB\n", &total) != 1 ||
+ fscanf(fp, "MemFree: %ld kB\n", &free) != 1 ||
+ fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n",
+ &buffers, &buffers) != 2 ||
+ fscanf(fp, "Cached: %ld kB\n", &cached) != 1)
+ goto scanerr;
fclose(fp);
- /* calculate percentage */
- perc = 100 * ((total - free) - (buffers + cached)) / total;
+ return bprintf("%d", 100 * ((total - free) - (buffers + cached)) / total);
- /* return perc as string */
- return smprintf("%d%%", perc);
+scanerr:
+ fclose(fp);
+ return UNKNOWN_STR;
}
-/* ram total */
-char *
-ram_total(const char *null)
+static const char *
+ram_total(void)
{
long total;
FILE *fp;
+ int n;
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
+ fp = fopen("/proc/meminfo", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/meminfo");
+ return UNKNOWN_STR;
}
+ n = fscanf(fp, "MemTotal: %ld kB\n", &total);
+ fclose(fp);
+ if (n != 1)
+ return UNKNOWN_STR;
- /* read the values */
- fscanf(fp, "MemTotal: %ld kB\n", &total);
+ return bprintf("%f", (float)total / 1024 / 1024);
+}
- /* close meminfo file */
+static const char *
+ram_used(void)
+{
+ long free, total, buffers, cached;
+ FILE *fp;
+
+ fp = fopen("/proc/meminfo", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/meminfo");
+ return UNKNOWN_STR;
+ }
+ if (fscanf(fp, "MemTotal: %ld kB\n", &total) != 1 ||
+ fscanf(fp, "MemFree: %ld kB\n", &free) != 1 ||
+ fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n",
+ &buffers, &buffers) != 2 ||
+ fscanf(fp, "Cached: %ld kB\n", &cached) != 1)
+ goto scanerr;
fclose(fp);
- /* return total ram as string */
- return smprintf("%f", (float)total / 1024 / 1024);
+ return bprintf("%f", (float)(total - free - buffers - cached) / 1024 / 1024);
+
+scanerr:
+ fclose(fp);
+ return UNKNOWN_STR;
}
-/* ram used */
-char *
-ram_used(const char *null)
+static const char *
+run_command(const char *cmd)
{
- long free, total, buffers, cached, used;
+ char *p;
FILE *fp;
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
+ fp = popen(cmd, "r");
+ if (fp == NULL) {
+ warn("Failed to get command output for %s", cmd);
+ return UNKNOWN_STR;
}
+ p = fgets(buf, sizeof(buf) - 1, fp);
+ pclose(fp);
+ if (!p)
+ return UNKNOWN_STR;
+ if ((p = strrchr(buf, '\n')) != NULL)
+ p[0] = '\0';
+
+ return buf[0] ? buf : UNKNOWN_STR;
+}
+
+static const char *
+swap_free(void)
+{
+ long total, free;
+ FILE *fp;
+ size_t bytes_read;
+ char *match;
- /* 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);
+ fp = fopen("/proc/meminfo", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/meminfo");
+ return UNKNOWN_STR;
+ }
- /* close meminfo file */
+ if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
+ warn("swap_free: read error");
+ fclose(fp);
+ return UNKNOWN_STR;
+ }
fclose(fp);
- /* calculate used */
- used = total - free - buffers - cached;
+ if ((match = strstr(buf, "SwapTotal")) == NULL)
+ return UNKNOWN_STR;
+ sscanf(match, "SwapTotal: %ld kB\n", &total);
- /* return used ram as string */
- return smprintf("%f", (float)used / 1024 / 1024);
+ if ((match = strstr(buf, "SwapFree")) == NULL)
+ return UNKNOWN_STR;
+ sscanf(match, "SwapFree: %ld kB\n", &free);
+
+ return bprintf("%f", (float)free / 1024 / 1024);
}
-/* custom shell command */
-char *
-run_command(const char* command)
+static const char *
+swap_perc(void)
{
- int good;
+ long total, free, cached;
FILE *fp;
- char buffer[64];
+ size_t bytes_read;
+ char *match;
+
+ fp = fopen("/proc/meminfo", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/meminfo");
+ return UNKNOWN_STR;
+ }
- /* try to open the command output */
- if (!(fp = popen(command, "r"))) {
- fprintf(stderr, "Could not get command output for: %s.\n", command);
- return smprintf(unknowntext);
+ if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
+ warn("swap_perc: read error");
+ fclose(fp);
+ return UNKNOWN_STR;
}
+ fclose(fp);
- /* get command output text, save it to buffer */
- fgets(buffer, sizeof(buffer) - 1, fp);
+ if ((match = strstr(buf, "SwapTotal")) == NULL)
+ return UNKNOWN_STR;
+ sscanf(match, "SwapTotal: %ld kB\n", &total);
- /* close it again */
- pclose(fp);
+ if ((match = strstr(buf, "SwapCached")) == NULL)
+ return UNKNOWN_STR;
+ sscanf(match, "SwapCached: %ld kB\n", &cached);
- /* add nullchar at the end */
- for (int i = 0 ; i != sizeof(buffer); i++) {
- if (buffer[i] == '\0') {
- good = 1;
- break;
- }
- }
- if (good)
- buffer[strlen(buffer) - 1] = '\0';
+ if ((match = strstr(buf, "SwapFree")) == NULL)
+ return UNKNOWN_STR;
+ sscanf(match, "SwapFree: %ld kB\n", &free);
- /* return the output */
- return smprintf("%s", buffer);
+ return bprintf("%d", 100 * (total - free - cached) / total);
}
-/* temperature */
-char *
-temp(const char *file)
+static const char *
+swap_total(void)
{
- int temperature;
+ long total;
FILE *fp;
+ size_t bytes_read;
+ char *match;
- /* open temperature file */
- if (!(fp = fopen(file, "r"))) {
- fprintf(stderr, "Could not open temperature file.\n");
- return smprintf(unknowntext);
+ fp = fopen("/proc/meminfo", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/meminfo");
+ return UNKNOWN_STR;
+ }
+ if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
+ warn("swap_total: read error");
+ fclose(fp);
+ return UNKNOWN_STR;
}
-
- /* extract temperature */
- fscanf(fp, "%d", &temperature);
-
- /* close temperature file */
fclose(fp);
- /* return temperature in degrees */
- return smprintf("%d°C", temperature / 1000);
+ if ((match = strstr(buf, "SwapTotal")) == NULL)
+ return UNKNOWN_STR;
+ sscanf(match, "SwapTotal: %ld kB\n", &total);
+
+ return bprintf("%f", (float)total / 1024 / 1024);
}
-/* uptime */
-char *
-uptime(const char *null)
+static const char *
+swap_used(void)
{
- struct sysinfo info;
- int hours = 0;
- int minutes = 0;
+ long total, free, cached;
+ FILE *fp;
+ size_t bytes_read;
+ char *match;
- /* get info */
- sysinfo(&info);
- hours = info.uptime / 3600;
- minutes = (info.uptime - hours * 3600 ) / 60;
+ fp = fopen("/proc/meminfo", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/meminfo");
+ return UNKNOWN_STR;
+ }
+ if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
+ warn("swap_used: read error");
+ fclose(fp);
+ return UNKNOWN_STR;
+ }
+ fclose(fp);
+
+ if ((match = strstr(buf, "SwapTotal")) == NULL)
+ return UNKNOWN_STR;
+ sscanf(match, "SwapTotal: %ld kB\n", &total);
+
+ if ((match = strstr(buf, "SwapCached")) == NULL)
+ return UNKNOWN_STR;
+ sscanf(match, "SwapCached: %ld kB\n", &cached);
- /* return it */
- return smprintf("%dh %dm", hours, minutes);
+ if ((match = strstr(buf, "SwapFree")) == NULL)
+ return UNKNOWN_STR;
+ sscanf(match, "SwapFree: %ld kB\n", &free);
+
+ return bprintf("%f", (float)(total - free - cached) / 1024 / 1024);
}
-/* username */
-char *
-username(const char *null)
+static const char *
+temp(const char *file)
{
- register struct passwd *pw;
- register uid_t uid;
-
- /* get the values */
- uid = geteuid();
- pw = getpwuid(uid);
+ int n, temp;
+ FILE *fp;
- /* if it worked, return */
- if (pw)
- return smprintf("%s", pw->pw_name);
- else {
- fprintf(stderr, "Could not get username.\n");
- return smprintf(unknowntext);
+ fp = fopen(file, "r");
+ if (fp == NULL) {
+ warn("Failed to open file %s", file);
+ return UNKNOWN_STR;
}
+ n = fscanf(fp, "%d", &temp);
+ fclose(fp);
+ if (n != 1)
+ return UNKNOWN_STR;
- return smprintf(unknowntext);
+ return bprintf("%d", temp / 1000);
}
-/* uid */
-char *
-uid(const char *null)
+static const char *
+uptime(void)
{
- register uid_t uid;
+ struct sysinfo info;
+ int h = 0;
+ int m = 0;
+
+ sysinfo(&info);
+ h = info.uptime / 3600;
+ m = (info.uptime - h * 3600 ) / 60;
+
+ return bprintf("%dh %dm", h, m);
+}
- /* get the values */
- uid = geteuid();
+static const char *
+username(void)
+{
+ struct passwd *pw = getpwuid(geteuid());
- /* if it worked, return */
- if (uid)
- return smprintf("%d", uid);
- else {
- fprintf(stderr, "Could not get uid.\n");
- return smprintf(unknowntext);
+ if (pw == NULL) {
+ warn("Failed to get username");
+ return UNKNOWN_STR;
}
- return smprintf(unknowntext);
+ return bprintf("%s", pw->pw_name);
}
-
-/* alsa volume percentage */
-char *
-vol_perc(const char *soundcard)
+static const char *
+uid(void)
{
- 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;
+ return bprintf("%d", geteuid());
+}
- /* 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.\n");
- return smprintf(unknowntext);
+static const char *
+vol_perc(const char *card)
+{
+ unsigned int i;
+ int v, afd, devmask;
+ char *vnames[] = SOUND_DEVICE_NAMES;
+
+ afd = open(card, O_RDONLY | O_NONBLOCK);
+ if (afd == -1) {
+ warn("Cannot open %s", card);
+ return UNKNOWN_STR;
+ }
+
+ if (ioctl(afd, SOUND_MIXER_READ_DEVMASK, &devmask) == -1) {
+ warn("Cannot get volume for %s", card);
+ close(afd);
+ return UNKNOWN_STR;
+ }
+ for (i = 0; i < (sizeof(vnames) / sizeof((vnames[0]))); i++) {
+ if (devmask & (1 << i) && !strcmp("vol", vnames[i])) {
+ if (ioctl(afd, MIXER_READ(i), &v) == -1) {
+ warn("vol_perc: ioctl");
+ close(afd);
+ return UNKNOWN_STR;
+ }
+ }
}
- 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);
+ close(afd);
- /* return the string (mute) */
- if (!mute)
- return smprintf("mute");
- else
- return smprintf("%d%%", (vol * 100) / max);
+ return bprintf("%d", v & 0xff);
}
-/* wifi percentage */
-char *
-wifi_perc(const char *wificard)
+static const char *
+wifi_perc(const char *iface)
{
- int bufsize = 255;
- int strength;
- char buf[bufsize];
- char *datastart;
- char path[64];
+ int i, perc;
+ char *p, *datastart;
+ char path[PATH_MAX];
char status[5];
- char needle[sizeof wificard + 1];
FILE *fp;
- /* generate the path name */
- memset(path, 0, sizeof path);
- strlcat(path, "/sys/class/net/", sizeof(path));
- strlcat(path, wificard, sizeof(path));
- strlcat(path, "/operstate", sizeof(path));
-
- /* open wifi file */
- if(!(fp = fopen(path, "r"))) {
- fprintf(stderr, "Error opening wifi operstate file.\n");
- return smprintf(unknowntext);
+ snprintf(path, sizeof(path), "%s%s%s", "/sys/class/net/", iface, "/operstate");
+ fp = fopen(path, "r");
+ if (fp == NULL) {
+ warn("Failed to open file %s", path);
+ return UNKNOWN_STR;
}
-
- /* read the status */
- fgets(status, 5, fp);
-
- /* close wifi file */
+ p = fgets(status, 5, fp);
fclose(fp);
-
- /* check if interface down */
- if(strcmp(status, "up\n") != 0)
- return smprintf(unknowntext);
-
- /* open wifi file */
- if (!(fp = fopen("/proc/net/wireless", "r"))) {
- fprintf(stderr, "Error opening wireless file.\n");
- return smprintf(unknowntext);
+ if(!p || strcmp(status, "up\n") != 0) {
+ return UNKNOWN_STR;
}
- /* extract the signal strength */
- strlcpy(needle, wificard, sizeof(needle));
- strlcat(needle, ":", sizeof(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);
+ fp = fopen("/proc/net/wireless", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/net/wireless");
+ return UNKNOWN_STR;
}
- /* close wifi file */
+ for (i = 0; i < 3; i++) {
+ if (!(p = fgets(buf, sizeof(buf) - 1, fp)))
+ break;
+ }
fclose(fp);
+ if (i < 2 || !p)
+ return UNKNOWN_STR;
+
+ if ((datastart = strstr(buf, iface)) == NULL)
+ return UNKNOWN_STR;
+
+ datastart = (datastart+(strlen(iface)+1));
+ sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &perc);
- /* return strength in percent */
- return smprintf("%d%%", strength);
+ return bprintf("%d", perc);
}
-/* wifi essid */
-char *
-wifi_essid(const char *wificard)
+static const char *
+wifi_essid(const char *iface)
{
- char id[IW_ESSID_MAX_SIZE+1];
- int sockfd;
+ static char id[IW_ESSID_MAX_SIZE+1];
+ int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
struct iwreq wreq;
- /* prepare */
memset(&wreq, 0, sizeof(struct iwreq));
wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
+ snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface);
- /* 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(unknowntext);
+ if (sockfd == -1) {
+ warn("Failed to get ESSID for interface %s", iface);
+ return UNKNOWN_STR;
}
wreq.u.essid.pointer = id;
if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
- fprintf(stderr, "Get ESSID ioctl failed for interface %s\n", wificard);
- return smprintf(unknowntext);
+ warn("Failed to get ESSID for interface %s", iface);
+ return UNKNOWN_STR;
}
- /* return the essid */
- if (strcmp((char *)wreq.u.essid.pointer, "") == 0)
- return smprintf(unknowntext);
+ close(sockfd);
+
+ if (strcmp(id, "") == 0)
+ return UNKNOWN_STR;
else
- return smprintf("%s", (char *)wreq.u.essid.pointer);
+ return id;
+}
+
+static void
+sighandler(const int signo)
+{
+ if (signo == SIGTERM || signo == SIGINT) {
+ done = 1;
+ }
+}
+
+static void
+usage(void)
+{
+ fprintf(stderr, "usage: %s [-o | -n]\n", argv0);
+ exit(1);
}
-/* main function */
int
-main(void)
+main(int argc, char *argv[])
{
- char status_string[1024];
+ unsigned short int i;
+ char status_string[MAXLEN];
+ char *element;
struct arg argument;
+ struct sigaction act;
+ size_t len;
+
+ ARGBEGIN {
+ case 'o':
+ oflag = 1;
+ break;
+ case 'n':
+ nflag = 1;
+ break;
+ default:
+ usage();
+ } ARGEND
- /* try to open display */
- if (!(dpy = XOpenDisplay(0x0))) {
- fprintf(stderr, "Cannot open display!\n");
- exit(1);
+ if (oflag && nflag) {
+ usage();
}
- /* return status every interval */
- for (;;) {
- /* clear the string */
- memset(status_string, 0, sizeof(status_string));
+ memset(&act, 0, sizeof(act));
+ act.sa_handler = sighandler;
+ sigaction(SIGINT, &act, 0);
+ sigaction(SIGTERM, &act, 0);
- /* generate status_string */
- for (size_t i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
+ if (!oflag) {
+ dpy = XOpenDisplay(NULL);
+ }
+
+ setlocale(LC_ALL, "");
+
+ while (!done) {
+ status_string[0] = '\0';
+
+ for (element = status_string, i = len = 0;
+ i < sizeof(args) / sizeof(args[0]);
+ ++i, element += len) {
argument = args[i];
- char *res = argument.func(argument.args);
- char *element = smprintf(argument.format, res);
- if (element == NULL) {
- element = smprintf(unknowntext);
- fprintf(stderr, "Failed to format output.\n");
+ len = snprintf(element, sizeof(status_string)-1 - len,
+ argument.fmt,
+ argument.func(argument.args));
+ if (len >= sizeof(status_string)) {
+ status_string[sizeof(status_string)-1] = '\0';
+ break;
}
- strlcat(status_string, element, sizeof(status_string));
- free(res);
- free(element);
}
- /* return the statusbar */
- setstatus(status_string);
+ if (oflag) {
+ printf("%s\n", status_string);
+ } else if (nflag) {
+ printf("%s\n", status_string);
+ done = 1;
+ } else {
+ XStoreName(dpy, DefaultRootWindow(dpy), status_string);
+ XSync(dpy, False);
+ }
- /* wait, "update_interval - 1" because of get_cpu_usage() which uses 1 second */
- sleep(update_interval -1);
+ if ((UPDATE_INTERVAL - delay) <= 0) {
+ delay = 0;
+ continue;
+ } else {
+ sleep(UPDATE_INTERVAL - delay);
+ delay = 0;
+ }
}
- /* close display */
- XCloseDisplay(dpy);
+ if (!oflag) {
+ XStoreName(dpy, DefaultRootWindow(dpy), NULL);
+ XCloseDisplay(dpy);
+ }
- /* exit successfully */
return 0;
}