/* See LICENSE file for copyright and license details. */
-/* global libraries */
#include <alsa/asoundlib.h>
-#include <arpa/inet.h>
+#include <err.h>
#include <fcntl.h>
#include <ifaddrs.h>
#include <limits.h>
#include <linux/wireless.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/sysinfo.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <X11/Xlib.h>
-/* local headers */
-#include "slstatus.h"
-#include "config.h"
+#undef strlcat
+#undef strlcpy
+
+#include "strlcat.h"
+#include "strlcpy.h"
+#include "concat.h"
+
+char concat[];
+
+struct arg {
+ char *(*func)();
+ const char *format;
+ const char *args;
+};
+
+static char *smprintf(const char *, ...);
+static char *battery_perc(const char *);
+static char *battery_state(const char *);
+static char *cpu_perc(void);
+static char *datetime(const char *);
+static char *disk_free(const char *);
+static char *disk_perc(const char *);
+static char *disk_total(const char *);
+static char *disk_used(const char *);
+static char *entropy(void);
+static char *gid(void);
+static char *hostname(void);
+static char *ip(const char *);
+static char *load_avg(void);
+static char *ram_free(void);
+static char *ram_perc(void);
+static char *ram_used(void);
+static char *ram_total(void);
+static char *run_command(const char *);
+static char *temp(const char *);
+static char *uid(void);
+static char *uptime(void);
+static char *username(void);
+static char *vol_perc(const char *);
+static char *wifi_perc(const char *);
+static char *wifi_essid(const char *);
+static void sighandler(const int);
+
+static unsigned short int delay;
+static Display *dpy;
+static int done = 0;
-/* set statusbar */
-void
-setstatus(const char *str)
-{
- /* set WM_NAME via X11 */
- XStoreName(dpy, DefaultRootWindow(dpy), str);
- XSync(dpy, False);
-}
+#include "config.h"
-/* smprintf function */
-char *
+static char *
smprintf(const char *fmt, ...)
{
- va_list fmtargs;
- char *ret = NULL;
+ va_list ap;
+ char *ret;
+ int len;
- va_start(fmtargs, fmt);
- if (vasprintf(&ret, fmt, fmtargs) < 0) {
- return NULL;
+ va_start(ap, fmt);
+ len = vsnprintf(NULL, 0, fmt, ap);
+ va_end(ap);
+
+ ret = malloc(++len);
+ if (ret == NULL) {
+ perror("malloc");
+ exit(1);
}
- va_end(fmtargs);
+
+ va_start(ap, fmt);
+ vsnprintf(ret, len, fmt, ap);
+ va_end(ap);
return ret;
}
-/* battery percentage */
-char *
+static char *
battery_perc(const char *battery)
{
- int now, full, perc;
- char batterynowfile[64] = "";
- char batteryfullfile[64] = "";
+ int perc;
FILE *fp;
- /* generate battery nowfile path */
- strcat(batterynowfile, batterypath);
- strcat(batterynowfile, battery);
- strcat(batterynowfile, "/");
- strcat(batterynowfile, batterynow);
-
- /* generate battery fullfile path */
- strcat(batteryfullfile, batterypath);
- strcat(batteryfullfile, battery);
- strcat(batteryfullfile, "/");
- strcat(batteryfullfile, batteryfull);
-
- /* open battery now file */
- if (!(fp = fopen(batterynowfile, "r"))) {
- fprintf(stderr, "Error opening battery file: %s.\n", batterynowfile);
- return smprintf(unknowntext);
+ ccat(3, "/sys/class/power_supply/", battery, "/capacity");
+ fp = fopen(concat, "r");
+ if (fp == NULL) {
+ warn("Error opening battery file: %s", concat);
+ return smprintf(UNKNOWN_STR);
}
+ fscanf(fp, "%i", &perc);
+ fclose(fp);
- /* read value */
- fscanf(fp, "%i", &now);
+ return smprintf("%d%%", perc);
+}
- /* close battery now file */
- fclose(fp);
+static char *
+battery_state(const char *battery)
+{
+ char *state = malloc(sizeof(char)*12);
+ FILE *fp;
- /* open battery full file */
- if (!(fp = fopen(batteryfullfile, "r"))) {
- fprintf(stderr, "Error opening battery file.\n");
- return smprintf(unknowntext);
+ if (!state) {
+ warn("Failed to get battery state.");
+ return smprintf(UNKNOWN_STR);
}
- /* read value */
- fscanf(fp, "%i", &full);
- /* close battery full file */
+ ccat(3, "/sys/class/power_supply/", battery, "/status");
+ fp = fopen(concat, "r");
+ if (fp == NULL) {
+ warn("Error opening battery file: %s", concat);
+ return smprintf(UNKNOWN_STR);
+ }
+ fscanf(fp, "%s", state);
fclose(fp);
- /* calculate percent */
- perc = now / (full / 100);
-
- /* return perc as string */
- return smprintf("%d%%", perc);
+ if (strcmp(state, "Charging") == 0)
+ return smprintf("+");
+ else if (strcmp(state, "Discharging") == 0)
+ return smprintf("-");
+ else if (strcmp(state, "Full") == 0)
+ return smprintf("=");
+ else
+ return smprintf("?");
}
-/* cpu percentage */
-char *
-cpu_perc(const char *null)
+static char *
+cpu_perc(void)
{
int perc;
long double a[4], b[4];
- FILE *fp;
+ FILE *fp = fopen("/proc/stat","r");
- /* open stat file */
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.\n");
- return smprintf(unknowntext);
+ if (fp == NULL) {
+ warn("Error opening stat file");
+ return smprintf(UNKNOWN_STR);
}
- /* read values */
fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
-
- /* close stat file */
fclose(fp);
- /* wait a second (for avg values) */
- sleep(1);
+ delay = (UPDATE_INTERVAL - (UPDATE_INTERVAL - 1));
+ 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("Error opening stat file");
+ return smprintf(UNKNOWN_STR);
}
- /* read values */
fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
-
- /* close stat file */
fclose(fp);
-
- /* calculate avg in this second */
perc = 100 * ((b[0]+b[1]+b[2]) - (a[0]+a[1]+a[2])) / ((b[0]+b[1]+b[2]+b[3]) - (a[0]+a[1]+a[2]+a[3]));
- /* return perc as string */
return smprintf("%d%%", perc);
}
-/* date and time */
-char *
+static char *
datetime(const char *timeformat)
{
- time_t tm;
- size_t bufsize = 64;
- char *buf = malloc(bufsize);
- if (buf == NULL) {
- fprintf(stderr, "Failed to get date/time.\n");
- return smprintf(unknowntext);
- }
+ time_t t;
+ char timestr[80];
- /* 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(timestr, sizeof(timestr), timeformat, localtime(&t)) == 0)
+ return smprintf(UNKNOWN_STR);
- setlocale(LC_TIME, "C");
- /* return time */
- char *ret = smprintf("%s", buf);
- free(buf);
- return ret;
+ return smprintf("%s", timestr);
}
-/* disk free */
-char *
+static char *
disk_free(const char *mountpoint)
{
struct statvfs fs;
- /* try to open mountpoint */
if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
+ warn("Could not get filesystem info");
+ return smprintf(UNKNOWN_STR);
}
- /* return free */
return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
}
-/* disk usage percentage */
-char *
+static char *
disk_perc(const char *mountpoint)
{
int perc = 0;
struct statvfs fs;
- /* try to open mountpoint */
if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
+ warn("Could not get filesystem info");
+ return smprintf(UNKNOWN_STR);
}
- /* calculate percent */
perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
- /* return perc */
return smprintf("%d%%", perc);
}
-/* disk total */
-char *
+static char *
disk_total(const char *mountpoint)
{
struct statvfs fs;
- /* try to open mountpoint */
if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
+ warn("Could not get filesystem info");
+ return smprintf(UNKNOWN_STR);
}
- /* return total */
return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
}
-/* disk used */
-char *
+static char *
disk_used(const char *mountpoint)
{
struct statvfs fs;
- /* try to open mountpoint */
if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
+ warn("Could not get filesystem info");
+ return smprintf(UNKNOWN_STR);
}
- /* return used */
return smprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
}
-/* entropy available */
-char *
-entropy(const char *null)
+static char *
+entropy(void)
{
int entropy = 0;
- FILE *fp;
+ FILE *fp = fopen("/proc/sys/kernel/random/entropy_avail", "r");
- /* open entropy file */
- if (!(fp = fopen("/proc/sys/kernel/random/entropy_avail", "r"))) {
- fprintf(stderr, "Could not open entropy file.\n");
- return smprintf(unknowntext);
+ if (fp == NULL) {
+ warn("Could not open entropy file");
+ return smprintf(UNKNOWN_STR);
}
- /* extract entropy */
fscanf(fp, "%d", &entropy);
-
- /* close entropy file */
fclose(fp);
- /* return entropy */
return smprintf("%d", entropy);
}
-/* gid */
-char *
-gid(const char *null)
+static 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 smprintf("%d", getgid());
}
-/* hostname */
-char *
-hostname(const char *null)
+static char *
+hostname(void)
{
char hostname[HOST_NAME_MAX];
- FILE *fp;
+ FILE *fp = fopen("/proc/sys/kernel/hostname", "r");
- /* open hostname file */
- if (!(fp = fopen("/proc/sys/kernel/hostname", "r"))) {
- fprintf(stderr, "Could not open hostname file.\n");
- return smprintf(unknowntext);
+ if (fp == NULL) {
+ warn("Could not open hostname file");
+ return smprintf(UNKNOWN_STR);
}
- /* extract hostname */
- fscanf(fp, "%s\n", hostname);
-
- /* close hostname file */
+ fgets(hostname, sizeof(hostname), fp);
+ /* FIXME: needs improvement */
+ memset(&hostname[strlen(hostname)-1], '\0',
+ sizeof(hostname) - strlen(hostname));
fclose(fp);
- /* return entropy */
return smprintf("%s", hostname);
}
-/* ip address */
-char *
+static char *
ip(const char *interface)
{
struct ifaddrs *ifaddr, *ifa;
int s;
char host[NI_MAXHOST];
- /* check if getting ip address works */
if (getifaddrs(&ifaddr) == -1) {
- fprintf(stderr, "Error getting IP address.\n");
- return smprintf(unknowntext);
+ warn("Error getting IP address");
+ return smprintf(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);
+ s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST,
+ NULL, 0, NI_NUMERICHOST);
if ((strcmp(ifa->ifa_name, interface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) {
if (s != 0) {
- fprintf(stderr, "Error getting IP address.\n");
- return smprintf(unknowntext);
+ warnx("Error getting IP address.");
+ return smprintf(UNKNOWN_STR);
}
return smprintf("%s", host);
}
}
- /* free the address */
freeifaddrs(ifaddr);
- return smprintf(unknowntext);
+ return smprintf(UNKNOWN_STR);
}
-/* load avg */
-char *
-load_avg(const char *null)
+static 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("Error getting load avg.");
+ return smprintf(UNKNOWN_STR);
}
- /* return it */
return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
}
-/* ram free */
-char *
-ram_free(const char *null)
+static char *
+ram_free(void)
{
long free;
- FILE *fp;
+ FILE *fp = fopen("/proc/meminfo", "r");
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
+ if (fp == NULL) {
+ warn("Error opening meminfo file");
+ return smprintf(UNKNOWN_STR);
}
- /* read the values */
fscanf(fp, "MemFree: %ld kB\n", &free);
-
- /* close meminfo file */
fclose(fp);
- /* return free ram as string */
return smprintf("%f", (float)free / 1024 / 1024);
}
-/* ram percentage */
-char *
-ram_perc(const char *null)
+static char *
+ram_perc(void)
{
int perc;
long total, free, buffers, cached;
- FILE *fp;
+ FILE *fp = fopen("/proc/meminfo", "r");
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
+ if (fp == NULL) {
+ warn("Error opening meminfo file");
+ return smprintf(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);
- /* close meminfo file */
fclose(fp);
-
- /* calculate percentage */
perc = 100 * ((total - free) - (buffers + cached)) / total;
- /* return perc as string */
return smprintf("%d%%", perc);
}
-/* ram total */
-char *
-ram_total(const char *null)
+static char *
+ram_total(void)
{
long total;
- FILE *fp;
+ FILE *fp = fopen("/proc/meminfo", "r");
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
+ if (fp == NULL) {
+ warn("Error opening meminfo file");
+ return smprintf(UNKNOWN_STR);
}
- /* read the values */
fscanf(fp, "MemTotal: %ld kB\n", &total);
-
- /* close meminfo file */
fclose(fp);
- /* return total ram as string */
return smprintf("%f", (float)total / 1024 / 1024);
}
-/* ram used */
-char *
-ram_used(const char *null)
+static char *
+ram_used(void)
{
long free, total, buffers, cached, used;
- FILE *fp;
+ FILE *fp = fopen("/proc/meminfo", "r");
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
+ if (fp == NULL) {
+ warn("Error opening meminfo file");
+ return smprintf(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);
- /* close meminfo file */
fclose(fp);
-
- /* calculate used */
used = total - free - buffers - cached;
- /* return used ram as string */
return smprintf("%f", (float)used / 1024 / 1024);
}
-/* custom shell command */
-char *
+static char *
run_command(const char* command)
{
int good;
- FILE *fp;
- char buffer[64];
+ FILE *fp = popen(command, "r");
+ char buffer[64] = "";
- /* try to open the command output */
- if (!(fp = popen(command, "r"))) {
- fprintf(stderr, "Could not get command output for: %s.\n", command);
- return smprintf(unknowntext);
+ if (fp == NULL) {
+ warn("Could not get command output for: %s", command);
+ return smprintf(UNKNOWN_STR);
}
- /* get command output text, save it to buffer */
- fgets(buffer, sizeof(buffer) - 1, fp);
-
- /* close it again */
+ fgets(buffer, sizeof(buffer)-1, fp);
pclose(fp);
-
- /* 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 (good)
+ buffer[strlen(buffer)-1] = '\0';
- /* return the output */
return smprintf("%s", buffer);
}
-/* temperature */
-char *
+static char *
temp(const char *file)
{
int temperature;
- FILE *fp;
+ FILE *fp = fopen(file, "r");
- /* open temperature file */
- if (!(fp = fopen(file, "r"))) {
- fprintf(stderr, "Could not open temperature file.\n");
- return smprintf(unknowntext);
+ if (fp == NULL) {
+ warn("Could not open temperature file");
+ return smprintf(UNKNOWN_STR);
}
- /* extract temperature */
fscanf(fp, "%d", &temperature);
-
- /* close temperature file */
fclose(fp);
- /* return temperature in degrees */
return smprintf("%d°C", temperature / 1000);
}
-/* username */
-char *
-username(const char *null)
+static char *
+uptime(void)
{
- register struct passwd *pw;
- register uid_t uid;
-
- /* get the values */
- uid = geteuid();
- pw = getpwuid(uid);
-
- /* if it worked, return */
- if (pw) {
- return smprintf("%s", pw->pw_name);
- } else {
- fprintf(stderr, "Could not get username.\n");
- return smprintf(unknowntext);
- }
+ struct sysinfo info;
+ int hours = 0;
+ int minutes = 0;
- return smprintf(unknowntext);
+ sysinfo(&info);
+ hours = info.uptime / 3600;
+ minutes = (info.uptime - hours * 3600 ) / 60;
+
+ return smprintf("%dh %dm", hours, minutes);
}
-/* uid */
-char *
-uid(const char *null)
+static char *
+username(void)
{
- register uid_t uid;
-
- /* get the values */
- uid = geteuid();
+ uid_t uid = geteuid();
+ struct passwd *pw = getpwuid(uid);
- /* 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("Could not get username");
+ return smprintf(UNKNOWN_STR);
}
- return smprintf(unknowntext);
+ return smprintf("%s", pw->pw_name);
+}
+
+static char *
+uid(void)
+{
+ return smprintf("%d", geteuid());
}
-/* alsa volume percentage */
-char *
+static char *
vol_perc(const char *soundcard)
{
- int mute = 0;
- long vol = 0, max = 0, min = 0;
+ long int vol, max, min;
snd_mixer_t *handle;
- snd_mixer_elem_t *pcm_mixer, *mas_mixer;
- snd_mixer_selem_id_t *vol_info, *mute_info;
+ snd_mixer_elem_t *elem;
+ snd_mixer_selem_id_t *s_elem;
- /* open everything */
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(&s_elem);
+ snd_mixer_selem_id_set_name(s_elem, "Master");
+ elem = snd_mixer_find_selem(handle, s_elem);
- /* 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);
- }
- 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) {
+ if (elem == NULL) {
+ snd_mixer_selem_id_free(s_elem);
snd_mixer_close(handle);
+ warn("Failed to get volume percentage for: %s.", soundcard);
+ return smprintf(UNKNOWN_STR);
}
- /* return the string (mute) */
- if (!mute) {
- return smprintf("mute");
- } else {
- return smprintf("%d%%", (vol * 100) / max);
- }
+ snd_mixer_handle_events(handle);
+ snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
+ snd_mixer_selem_get_playback_volume(elem, 0, &vol);
+
+ snd_mixer_selem_id_free(s_elem);
+ snd_mixer_close(handle);
+
+ return smprintf("%d%%", ((uint_fast16_t)(vol * 100) / max));
}
-/* wifi percentage */
-char *
+static char *
wifi_perc(const char *wificard)
{
- int bufsize = 255;
int strength;
- char buf[bufsize];
+ char buf[255];
char *datastart;
- char path[64];
char status[5];
- char needle[sizeof wificard + 1];
FILE *fp;
- /* generate the path name */
- memset(path, 0, sizeof path);
- strcat(path, "/sys/class/net/");
- strcat(path, wificard);
- strcat(path, "/operstate");
+ ccat(3, "/sys/class/net/", wificard, "/operstate");
+
+ fp = fopen(concat, "r");
- /* open wifi file */
- if(!(fp = fopen(path, "r"))) {
- fprintf(stderr, "Error opening wifi operstate file.\n");
- return smprintf(unknowntext);
+ if (fp == NULL) {
+ warn("Error opening wifi operstate file");
+ return smprintf(UNKNOWN_STR);
}
- /* read the status */
fgets(status, 5, fp);
-
- /* close wifi file */
fclose(fp);
+ if(strcmp(status, "up\n") != 0)
+ return smprintf(UNKNOWN_STR);
- /* check if interface down */
- if(strcmp(status, "up\n") != 0) {
- return smprintf(unknowntext);
+ fp = fopen("/proc/net/wireless", "r");
+ if (fp == NULL) {
+ warn("Error opening wireless file");
+ return smprintf(UNKNOWN_STR);
}
- /* open wifi file */
- if (!(fp = fopen("/proc/net/wireless", "r"))) {
- fprintf(stderr, "Error opening wireless file.\n");
- return smprintf(unknowntext);
- }
+ ccat(2, wificard, ":");
+ fgets(buf, sizeof(buf), fp);
+ fgets(buf, sizeof(buf), fp);
+ fgets(buf, sizeof(buf), fp);
- /* 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, concat);
+ if (datastart != NULL) {
datastart = strstr(buf, ":");
sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &strength);
}
- /* close wifi file */
fclose(fp);
- /* return strength in percent */
return smprintf("%d%%", strength);
}
-/* wifi essid */
-char *
+static char *
wifi_essid(const char *wificard)
{
char id[IW_ESSID_MAX_SIZE+1];
- int sockfd;
+ 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;
-
- /* 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("Cannot open socket for interface: %s", wificard);
+ return smprintf(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("Get ESSID ioctl failed for interface %s", wificard);
+ return smprintf(UNKNOWN_STR);
}
- /* return the essid */
- if (strcmp((char *)wreq.u.essid.pointer, "") == 0) {
- return smprintf(unknowntext);
- } else {
+ 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;
}
}
-/* main function */
int
main(void)
{
- char status_string[1024];
+ size_t i;
+ char status_string[4096];
+ char *res, *element, *status_old;
struct arg argument;
+ struct sigaction act;
- /* try to open display */
- if (!(dpy = XOpenDisplay(0x0))) {
- fprintf(stderr, "Cannot open display!\n");
- exit(1);
- }
+ memset(&act, 0, sizeof(act));
+ act.sa_handler = sighandler;
+ sigaction(SIGINT, &act, 0);
+ sigaction(SIGTERM, &act, 0);
+
+ dpy = XOpenDisplay(NULL);
- /* return status every interval */
- for (;;) {
- /* clear the string */
- memset(status_string, 0, sizeof(status_string));
+ XFetchName(dpy, DefaultRootWindow(dpy), &status_old);
- /* generate status_string */
- for (size_t i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
+ while (!done) {
+ status_string[0] = '\0';
+ for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
argument = args[i];
- char *res = argument.func(argument.args);
- char *element = smprintf(argument.format, res);
+ if (argument.args == NULL)
+ res = argument.func();
+ else
+ res = argument.func(argument.args);
+ element = smprintf(argument.format, res);
if (element == NULL) {
- element = smprintf(unknowntext);
- fprintf(stderr, "Failed to format output.\n");
+ element = smprintf(UNKNOWN_STR);
+ warnx("Failed to format output.");
}
- strcat(status_string, element);
+ strlcat(status_string, element, sizeof(status_string));
free(res);
free(element);
}
-
- /* return the statusbar */
- setstatus(status_string);
-
- /* wait, "update_interval - 1" because of get_cpu_usage() which uses 1 second */
- sleep(update_interval -1);
+ 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;
}
- /* close display */
+ XStoreName(dpy, DefaultRootWindow(dpy), status_old);
+ XSync(dpy, False);
+
XCloseDisplay(dpy);
- /* exit successfully */
return 0;
}