X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/8894244cb8ad92569a1cbe9854ba3a7b97102e20..e1e1b1d79a9d274c861386ad14a5eacb6a6819f7:/slstatus.c
diff --git a/slstatus.c b/slstatus.c
index b34ea30..eb936e2 100644
--- a/slstatus.c
+++ b/slstatus.c
@@ -1,360 +1,840 @@
/* See LICENSE file for copyright and license details. */
-
-/* global libraries */
-#include <alsa/asoundlib.h>
+#include <dirent.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <ifaddrs.h>
+#include <limits.h>
+#include <linux/wireless.h>
+#include <netdb.h>
+#include <pwd.h>
+#include <signal.h>
#include <stdarg.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/soundcard.h>
+#include <sys/sysinfo.h>
+#include <sys/types.h>
+#include <sys/utsname.h>
#include <time.h>
#include <unistd.h>
#include <X11/Xlib.h>
-/* local libraries */
+#include "arg.h"
+
+#define LEN(x) (sizeof (x) / sizeof *(x))
+
+struct arg {
+ const char *(*func)();
+ const char *fmt;
+ const char *args;
+};
+
+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);
+
+char *argv0;
+static unsigned short int done;
+static Display *dpy;
+
#include "config.h"
-/* functions */
-void setstatus(char *str);
-char *battery();
-char *cpu_temperature();
-char *cpu_usage();
-char *datetime();
-char *ram_usage();
-char *smprintf(char *fmt, ...);
-char *volume();
-char *wifi_signal();
-
-/* global variables */
-static Display *dpy;
+static char buf[MAXLEN];
+
+static const char *
+bprintf(const char *fmt, ...)
+{
+ va_list ap;
+ size_t len;
+
+ va_start(ap, fmt);
+ len = vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
+ va_end(ap);
+
+ if (len >= sizeof(buf))
+ buf[sizeof(buf)-1] = '\0';
+
+ return buf;
+}
+
+int
+pscanf(const char *path, const char *fmt, ...)
+{
+ FILE *fp;
+ va_list ap;
+ int n;
+
+ if (!(fp = fopen(path, "r"))) {
+ warn("fopen %s: %s\n", path, strerror(errno));
+ return -1;
+ }
+ va_start(ap, fmt);
+ n = vfscanf(fp, fmt, ap);
+ va_end(ap);
+ fclose(fp);
+
+ return (n == EOF) ? -1 : n;
+}
+
+static const char *
+battery_perc(const char *bat)
+{
+ int perc;
+ char path[PATH_MAX];
+
+ snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/capacity");
+ return (pscanf(path, "%i", &perc) == 1) ?
+ bprintf("%d", perc) : unknown_str;
+}
+
+static const char *
+battery_power(const char *bat)
+{
+ int watts;
+ char path[PATH_MAX];
+
+ snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/power_now");
+ return (pscanf(path, "%i", &watts) == 1) ?
+ bprintf("%d", (watts + 500000) / 1000000) : unknown_str;
+}
+
+static const char *
+battery_state(const char *bat)
+{
+ struct {
+ char *state;
+ char *symbol;
+ } map[] = {
+ { "Charging", "+" },
+ { "Discharging", "-" },
+ { "Full", "=" },
+ { "Unknown", "/" },
+ };
+ size_t i;
+ char path[PATH_MAX], state[12];
+
+ snprintf(path, sizeof(path), "%s%s%s", "/sys/class/power_supply/", bat, "/status");
+ if (pscanf(path, "%12s", state) != 1) {
+ return unknown_str;
+ }
+
+ for (i = 0; i < LEN(map); i++) {
+ if (!strcmp(map[i].state, state)) {
+ break;
+ }
+ }
+ return (i == LEN(map)) ? "?" : map[i].symbol;
+}
+
+static const char *
+cpu_freq(void)
+{
+ int freq;
+
+ return (pscanf("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq",
+ "%i", &freq) != 1) ?
+ bprintf("%d", (freq + 500) / 1000) : unknown_str;
+}
+
+static const char *
+cpu_perc(void)
+{
+ struct timespec delay;
+ int perc;
+ long double a[4], b[4];
+
+ if (pscanf("/proc/stat", "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2],
+ &a[3]) != 4) {
+ return unknown_str;
+ }
+
+ delay.tv_sec = (interval / 2) / 1000;
+ delay.tv_nsec = ((interval / 2) % 1000) * 1000000;
+ nanosleep(&delay, NULL);
+
+ if (pscanf("/proc/stat", "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2],
+ &b[3]) != 4) {
+ return unknown_str;
+ }
+
+ 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 bprintf("%d", perc);
+}
+
+static const char *
+datetime(const char *fmt)
+{
+ time_t t;
+
+ t = time(NULL);
+ if (strftime(buf, sizeof(buf), fmt, localtime(&t)) == 0)
+ return unknown_str;
+
+ return buf;
+}
+
+static const char *
+disk_free(const char *mnt)
+{
+ struct statvfs fs;
+
+ if (statvfs(mnt, &fs) < 0) {
+ warn("Failed to get filesystem info");
+ return unknown_str;
+ }
+
+ return bprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
+}
+
+static const char *
+disk_perc(const char *mnt)
+{
+ int perc;
+ struct statvfs fs;
+
+ if (statvfs(mnt, &fs) < 0) {
+ warn("Failed to get filesystem info");
+ return unknown_str;
+ }
+
+ perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
+
+ return bprintf("%d", perc);
+}
+
+static const char *
+disk_total(const char *mnt)
+{
+ struct statvfs fs;
+
+ if (statvfs(mnt, &fs) < 0) {
+ warn("Failed to get filesystem info");
+ return unknown_str;
+ }
+
+ return bprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
+}
+
+static const char *
+disk_used(const char *mnt)
+{
+ struct statvfs fs;
+
+ if (statvfs(mnt, &fs) < 0) {
+ warn("Failed to get filesystem info");
+ return unknown_str;
+ }
-/* set statusbar (WM_NAME) */
-void
-setstatus(char *str)
+ return bprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
+}
+
+static const char *
+entropy(void)
+{
+ int num;
+
+ return (pscanf("/proc/sys/kernel/random/entropy_avail", "%d", &num) == 1) ?
+ bprintf("%d", num) : unknown_str;
+}
+
+static const char *
+gid(void)
{
- XStoreName(dpy, DefaultRootWindow(dpy), str);
- XSync(dpy, False);
+ return bprintf("%d", getgid());
}
-/* battery percentage */
-char *
-battery()
+static const char *
+hostname(void)
{
- int battery_now, battery_full, battery_perc;
- FILE *fp;
+ if (gethostname(buf, sizeof(buf)) == -1) {
+ warn("hostname");
+ return unknown_str;
+ }
+
+ return buf;
+}
- /* open battery now file */
- if (!(fp = fopen(batterynowfile, "r"))) {
- fprintf(stderr, "Error opening battery file.");
- exit(1);
- }
+static const char *
+ip(const char *iface)
+{
+ struct ifaddrs *ifaddr, *ifa;
+ int s;
+ char host[NI_MAXHOST];
+
+ if (getifaddrs(&ifaddr) == -1) {
+ warn("Failed to get IP address for interface %s", iface);
+ return unknown_str;
+ }
+
+ for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
+ if (ifa->ifa_addr == NULL) {
+ continue;
+ }
+ s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
+ if ((strcmp(ifa->ifa_name, iface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) {
+ if (s != 0) {
+ warnx("Failed to get IP address for interface %s", iface);
+ return unknown_str;
+ }
+ return bprintf("%s", host);
+ }
+ }
+
+ freeifaddrs(ifaddr);
+
+ return unknown_str;
+}
- /* read value */
- fscanf(fp, "%i", &battery_now);
+static const char *
+kernel_release(void)
+{
+ struct utsname udata;
- /* close battery now file */
- fclose(fp);
+ if (uname(&udata) < 0) {
+ return unknown_str;
+ }
- /* open battery full file */
- if (!(fp = fopen(batteryfullfile, "r"))) {
- fprintf(stderr, "Error opening battery file.");
- exit(1);
- }
+ return bprintf("%s", udata.release);
+}
- /* read value */
- fscanf(fp, "%i", &battery_full);
+static const char *
+keyboard_indicators(void)
+{
+ Display *dpy = XOpenDisplay(NULL);
+ XKeyboardState state;
+
+ if (dpy == NULL) {
+ warnx("XOpenDisplay failed");
+ return unknown_str;
+ }
+ XGetKeyboardControl(dpy, &state);
+ XCloseDisplay(dpy);
+
+ switch (state.led_mask) {
+ case 1:
+ return "c";
+ case 2:
+ return "n";
+ case 3:
+ return "cn";
+ default:
+ return "";
+ }
+}
- /* close battery full file */
- fclose(fp);
+static const char *
+load_avg(void)
+{
+ double avgs[3];
- /* calculate percent */
- battery_perc = battery_now / (battery_full / 100);
+ if (getloadavg(avgs, 3) < 0) {
+ warnx("Failed to get the load avg");
+ return unknown_str;
+ }
- /* return batt_perc as string */
- return smprintf("%d%%", battery_perc);
+ return bprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
}
-/* cpu temperature */
-char *
-cpu_temperature()
+static const char *
+num_files(const char *dir)
{
- int temperature;
- FILE *fp;
+ struct dirent *dp;
+ DIR *fd;
+ int num = 0;
- /* open temperature file */
- if (!(fp = fopen(tempfile, "r"))) {
- fprintf(stderr, "Could not open temperature file.\n");
- exit(1);
- }
+ if ((fd = opendir(dir)) == NULL) {
+ warn("Failed to get number of files in directory %s", dir);
+ return unknown_str;
+ }
- /* extract temperature */
- fscanf(fp, "%d", &temperature);
+ while ((dp = readdir(fd)) != NULL) {
+ if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
+ continue; /* skip self and parent */
+ num++;
+ }
- /* close temperature file */
- fclose(fp);
+ closedir(fd);
- /* return temperature in degrees */
- return smprintf("%d°C", temperature / 1000);
+ return bprintf("%d", num);
}
-/* cpu percentage */
-char *
-cpu_usage()
+static const char *
+ram_free(void)
{
- int cpu_perc;
- long double a[4], b[4];
- FILE *fp;
+ long free;
- /* open stat file */
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.");
- exit(1);
- }
+ return (pscanf("/proc/meminfo", "MemFree: %ld kB\n", &free) == 1) ?
+ bprintf("%f", (float)free / 1024 / 1024) : unknown_str;
+}
- /* read values */
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
+static const char *
+ram_perc(void)
+{
+ long total, free, buffers, cached;
+
+ return (pscanf("/proc/meminfo",
+ "MemTotal: %ld kB\n"
+ "MemFree: %ld kB\n"
+ "MemAvailable: %ld kB\nBuffers: %ld kB\n"
+ "Cached: %ld kB\n",
+ &total, &free, &buffers, &buffers, &cached) == 5) ?
+ bprintf("%d", 100 * ((total - free) - (buffers + cached)) / total) :
+ unknown_str;
+}
- /* close stat file */
- fclose(fp);
+static const char *
+ram_total(void)
+{
+ long total;
- /* wait a second (for avg values) */
- sleep(1);
+ return (pscanf("/proc/meminfo", "MemTotal: %ld kB\n", &total) == 1) ?
+ bprintf("%f", (float)total / 1024 / 1024) : unknown_str;
+}
- /* open stat file */
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.");
- exit(1);
- }
+static const char *
+ram_used(void)
+{
+ long total, free, buffers, cached;
+
+ return (pscanf("/proc/meminfo",
+ "MemTotal: %ld kB\n"
+ "MemFree: %ld kB\n"
+ "MemAvailable: %ld kB\nBuffers: %ld kB\n"
+ "Cached: %ld kB\n",
+ &total, &free, &buffers, &buffers, &cached) == 5) ?
+ bprintf("%f", (float)(total - free - buffers - cached) / 1024 / 1024) :
+ unknown_str;
+}
- /* read values */
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
+static const char *
+run_command(const char *cmd)
+{
+ char *p;
+ FILE *fp;
+
+ 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;
+}
- /* close stat file */
- fclose(fp);
+static const char *
+swap_free(void)
+{
+ long total, free;
+ FILE *fp;
+ size_t bytes_read;
+ char *match;
+
+ 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_free: 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, "SwapFree")) == NULL)
+ return unknown_str;
+ sscanf(match, "SwapFree: %ld kB\n", &free);
+
+ return bprintf("%f", (float)free / 1024 / 1024);
+}
- /* calculate avg in this second */
- cpu_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]));
+static const char *
+swap_perc(void)
+{
+ long total, free, cached;
+ FILE *fp;
+ size_t bytes_read;
+ char *match;
+
+ 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_perc: 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);
+
+ if ((match = strstr(buf, "SwapFree")) == NULL)
+ return unknown_str;
+ sscanf(match, "SwapFree: %ld kB\n", &free);
+
+ return bprintf("%d", 100 * (total - free - cached) / total);
+}
- /* return cpu_perc as string */
- return smprintf("%d%%", cpu_perc);
+static const char *
+swap_total(void)
+{
+ long total;
+ FILE *fp;
+ size_t bytes_read;
+ char *match;
+
+ 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;
+ }
+ fclose(fp);
+
+ if ((match = strstr(buf, "SwapTotal")) == NULL)
+ return unknown_str;
+ sscanf(match, "SwapTotal: %ld kB\n", &total);
+
+ return bprintf("%f", (float)total / 1024 / 1024);
}
-/* date and time */
-char *
-datetime()
+static const char *
+swap_used(void)
{
- time_t tm;
- size_t bufsize = 19;
- char *buf = malloc(bufsize);
+ long total, free, cached;
+ FILE *fp;
+ size_t bytes_read;
+ char *match;
+
+ 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);
+
+ 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);
+}
- /* get time in format */
- time(&tm);
- if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
- fprintf(stderr, "Strftime failed.\n");
- exit(1);
- }
+static const char *
+temp(const char *file)
+{
+ int temp;
- /* return time */
- return buf;
+ return (pscanf(file, "%d", &temp) == 1) ?
+ bprintf("%d", temp / 1000) : unknown_str;
}
-/* ram percentage */
-char *
-ram_usage()
+static const char *
+uptime(void)
{
- int ram_perc;
- long total, free, available;
- FILE *fp;
+ struct sysinfo info;
+ int h = 0;
+ int m = 0;
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.");
- exit(1);
- }
+ sysinfo(&info);
+ h = info.uptime / 3600;
+ m = (info.uptime - h * 3600 ) / 60;
+
+ return bprintf("%dh %dm", h, m);
+}
+
+static const char *
+username(void)
+{
+ struct passwd *pw = getpwuid(geteuid());
+
+ if (pw == NULL) {
+ warn("Failed to get username");
+ return unknown_str;
+ }
+
+ return bprintf("%s", pw->pw_name);
+}
+
+static const char *
+uid(void)
+{
+ return bprintf("%d", geteuid());
+}
+
+
+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 < LEN(vnames); 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;
+ }
+ }
+ }
+
+ close(afd);
+
+ return bprintf("%d", v & 0xff);
+}
+
+static const char *
+wifi_perc(const char *iface)
+{
+ int i, perc;
+ char *p, *datastart;
+ char path[PATH_MAX];
+ char status[5];
+ FILE *fp;
+
+ 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;
+ }
+ p = fgets(status, 5, fp);
+ fclose(fp);
+ if(!p || strcmp(status, "up\n") != 0) {
+ return unknown_str;
+ }
+
+ fp = fopen("/proc/net/wireless", "r");
+ if (fp == NULL) {
+ warn("Failed to open file /proc/net/wireless");
+ return unknown_str;
+ }
+
+ 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 bprintf("%d", perc);
+}
+
+static const char *
+wifi_essid(const char *iface)
+{
+ static 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;
+ snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface);
+
+ 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) {
+ warn("Failed to get ESSID for interface %s", iface);
+ return unknown_str;
+ }
+
+ close(sockfd);
+
+ if (strcmp(id, "") == 0)
+ return unknown_str;
+ else
+ return id;
+}
+
+static void
+terminate(const int signo)
+{
+ done = 1;
+}
+
+static void
+difftimespec(struct timespec *res, struct timespec *a, struct timespec *b)
+{
+ 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) * 1000000000;
+}
+
+static void
+usage(void)
+{
+ fprintf(stderr, "usage: %s [-s]\n", argv0);
+ exit(1);
+}
- /* read the values */
- fscanf(fp, "MemTotal: %ld kB\n", &total);
- fscanf(fp, "MemFree: %ld kB\n", &free);
- fscanf(fp, "MemAvailable: %ld kB\n", &available);
-
- /* close meminfo file */
- fclose(fp);
-
- /* calculate percentage */
- ram_perc = 100 * (total - available) / total;
-
- /* return ram_perc as string */
- return smprintf("%d%%",ram_perc);
-}
-
-/* smprintf function */
-char *
-smprintf(char *fmt, ...)
-{
- va_list fmtargs;
- char *ret;
- int len;
-
- va_start(fmtargs, fmt);
- len = vsnprintf(NULL, 0, fmt, fmtargs);
- va_end(fmtargs);
-
- ret = malloc(++len);
- if (ret == NULL) {
- fprintf(stderr, "Malloc error.");
- exit(1);
- }
-
- va_start(fmtargs, fmt);
- vsnprintf(ret, len, fmt, fmtargs);
- va_end(fmtargs);
-
- return ret;
-}
-
-/* alsa volume percentage */
-char *
-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 *
-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.");
- exit(1);
- }
-
- /* read the status */
- fgets(status, 5, fp);
-
- /* close wifi file */
- fclose(fp);
-
- /* check if interface down */
- if(strcmp(status, "up\n") != 0){
- return "n/a";
- }
-
- /* open wifi file */
- if (!(fp = fopen("/proc/net/wireless", "r"))) {
- fprintf(stderr, "Error opening wireless file.");
- exit(1);
- }
-
- /* 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];
-
- /* open display */
- if (!(dpy = XOpenDisplay(0x0))) {
- fprintf(stderr, "Cannot open display!\n");
- exit(1);
- }
-
- char *pWifi_signal = NULL;
- char *pBattery = NULL;
- char *pCpu_usage = NULL;
- char *pCpu_temperature = NULL;
- char *pRam_usage = NULL;
- char *pVolume = NULL;
- char *pDatetime = NULL;
-
- /* return status every second */
- for (;;) {
- pWifi_signal = wifi_signal();
- pBattery = battery();
- pCpu_usage = cpu_usage();
- pCpu_temperature = cpu_temperature();
- pRam_usage = ram_usage();
- pVolume = volume();
- pDatetime = datetime();
- sprintf(status, FORMATSTRING, ARGUMENTS);
- setstatus(status);
- free(pWifi_signal);
- free(pBattery);
- free(pCpu_usage);
- free(pCpu_temperature);
- free(pRam_usage);
- free(pVolume);
- free(pDatetime);
- }
-
- /* close display */
- XCloseDisplay(dpy);
-
- /* exit successfully */
- return 0;
+main(int argc, char *argv[])
+{
+ struct sigaction act;
+ struct timespec start, current, diff, intspec, wait;
+ size_t i, len;
+ int sflag = 0;
+ char status[MAXLEN];
+
+ ARGBEGIN {
+ case 's':
+ sflag = 1;
+ break;
+ default:
+ usage();
+ } ARGEND
+
+ if (argc) {
+ usage();
+ }
+
+ memset(&act, 0, sizeof(act));
+ act.sa_handler = terminate;
+ sigaction(SIGINT, &act, NULL);
+ sigaction(SIGTERM, &act, NULL);
+
+ if (!sflag && !(dpy = XOpenDisplay(NULL))) {
+ fprintf(stderr, "slstatus: cannot open display");
+ return 1;
+ }
+
+ while (!done) {
+ clock_gettime(CLOCK_MONOTONIC, &start);
+
+ status[0] = '\0';
+ for (i = len = 0; i < LEN(args); i++) {
+ len += snprintf(status + len, sizeof(status) - len,
+ args[i].fmt, args[i].func(args[i].args));
+
+ if (len >= sizeof(status)) {
+ status[sizeof(status) - 1] = '\0';
+ }
+ }
+
+ if (sflag) {
+ printf("%s\n", status);
+ } else {
+ XStoreName(dpy, DefaultRootWindow(dpy), status);
+ XSync(dpy, False);
+ }
+
+ if (!done) {
+ clock_gettime(CLOCK_MONOTONIC, ¤t);
+ difftimespec(&diff, ¤t, &start);
+
+ intspec.tv_sec = interval / 1000;
+ intspec.tv_nsec = (interval % 1000) * 1000000;
+ difftimespec(&wait, &intspec, &diff);
+
+ if (wait.tv_sec >= 0) {
+ nanosleep(&wait, NULL);
+ }
+ }
+ }
+
+ if (!sflag) {
+ XStoreName(dpy, DefaultRootWindow(dpy), NULL);
+ XCloseDisplay(dpy);
+ }
+
+ return 0;
}