/* global libraries */
#include <alsa/asoundlib.h>
+#include <arpa/inet.h>
#include <fcntl.h>
+#include <ifaddrs.h>
+#include <limits.h>
+#include <linux/wireless.h>
+#include <locale.h>
+#include <netdb.h>
+#include <pwd.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <sys/types.h>
+#include <sys/ioctl.h>
#include <sys/stat.h>
+#include <sys/statvfs.h>
+#include <sys/socket.h>
+#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <X11/Xlib.h>
-/* local libraries */
+/* local headers */
+#include "slstatus.h"
#include "config.h"
-/* functions */
-void setstatus(char *str);
-int config_check();
-char *smprintf(char *fmt, ...);
-char *get_battery();
-char *get_cpu_temperature();
-char *get_cpu_usage();
-char *get_datetime();
-char *get_ram_usage();
-char *get_volume();
-char *get_wifi_signal();
-
-/* global variables */
-static Display *dpy;
-
-/* set statusbar (WM_NAME) */
+/* set statusbar */
void
-setstatus(char *str)
+setstatus(const char *str)
{
- XStoreName(dpy, DefaultRootWindow(dpy), str);
- XSync(dpy, False);
+ /* set WM_NAME via X11 */
+ XStoreName(dpy, DefaultRootWindow(dpy), str);
+ XSync(dpy, False);
}
/* smprintf function */
char *
-smprintf(char *fmt, ...)
+smprintf(const char *fmt, ...)
{
- va_list fmtargs;
- char *ret = NULL;
- va_start(fmtargs, fmt);
- if (vasprintf(&ret, fmt, fmtargs) < 0)
- return NULL;
- va_end(fmtargs);
-
- return ret;
-}
+ va_list fmtargs;
+ char *ret = NULL;
-#define CHECK_FILE(X,Y) do { \
- if (stat(X,&Y) < 0) return -1; \
- if (!S_ISREG(Y.st_mode)) return -1; \
-} while (0);
+ va_start(fmtargs, fmt);
+ if (vasprintf(&ret, fmt, fmtargs) < 0) {
+ return NULL;
+ }
+ va_end(fmtargs);
-/* check configured paths */
-int
-config_check()
-{
- struct stat fs;
- CHECK_FILE(batterynowfile, fs);
- CHECK_FILE(batteryfullfile, fs);
- CHECK_FILE(tempfile, fs);
- return 0;
+ return ret;
}
/* battery percentage */
char *
-get_battery()
+battery_perc(const char *battery)
{
- int now, full, perc;
- FILE *fp;
+ int now, full, perc;
+ char batterynowfile[64] = "";
+ char batteryfullfile[64] = "";
+ 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", batterynowfile);
+ return smprintf("n/a");
+ }
+
+ /* read value */
+ fscanf(fp, "%i", &now);
+
+ /* close battery now file */
+ fclose(fp);
+
+ /* open battery full file */
+ if (!(fp = fopen(batteryfullfile, "r"))) {
+ fprintf(stderr, "Error opening battery file.");
+ return smprintf("n/a");
+ }
+
+ /* read value */
+ fscanf(fp, "%i", &full);
+
+ /* close battery full file */
+ fclose(fp);
+
+ /* calculate percent */
+ perc = now / (full / 100);
+
+ /* return perc as string */
+ return smprintf("%d%%", perc);
+}
- /* open battery now file */
- if (!(fp = fopen(batterynowfile, "r"))) {
- fprintf(stderr, "Error opening battery file.");
- exit(1);
- }
+/* cpu percentage */
+char *
+cpu_perc(const char *null)
+{
+ int perc;
+ long double a[4], b[4];
+ FILE *fp;
+
+ /* open stat file */
+ if (!(fp = fopen("/proc/stat","r"))) {
+ fprintf(stderr, "Error opening stat file.");
+ return smprintf("n/a");
+ }
- /* read value */
- fscanf(fp, "%i", &now);
+ /* read values */
+ fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
- /* close battery now file */
- fclose(fp);
+ /* close stat file */
+ fclose(fp);
- /* open battery full file */
- if (!(fp = fopen(batteryfullfile, "r"))) {
- fprintf(stderr, "Error opening battery file.");
- exit(1);
- }
+ /* wait a second (for avg values) */
+ sleep(1);
- /* read value */
- fscanf(fp, "%i", &full);
+ /* open stat file */
+ if (!(fp = fopen("/proc/stat","r"))) {
+ fprintf(stderr, "Error opening stat file.");
+ return smprintf("n/a");
+ }
- /* close battery full file */
- fclose(fp);
+ /* read values */
+ fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
- /* calculate percent */
- perc = now / (full / 100);
+ /* close stat file */
+ fclose(fp);
- /* return perc as string */
- return smprintf("%d%%", perc);
+ /* 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);
}
-/* cpu temperature */
+/* date and time */
char *
-get_cpu_temperature()
+datetime(const char *timeformat)
{
- int temperature;
- FILE *fp;
+ time_t tm;
+ size_t bufsize = 64;
+ char *buf = malloc(bufsize);
+ if (buf == NULL) {
+ fprintf(stderr, "Failed to get date/time");
+ return smprintf("n/a");
+ }
+
+ /* 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("n/a");
+ }
+
+ setlocale(LC_TIME, "C");
+ /* return time */
+ char *ret = smprintf("%s", buf);
+ free(buf);
+ return ret;
+}
- /* open temperature file */
- if (!(fp = fopen(tempfile, "r"))) {
- fprintf(stderr, "Could not open temperature file.\n");
- exit(1);
- }
+/* disk free */
+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("n/a");
+ }
+
+ /* return free */
+ return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
+}
+
+/* disk usage percentage */
+char *
+disk_perc(const char *mountpoint)
+{
+ int perc = 0;
+ struct statvfs fs;
- /* extract temperature */
- fscanf(fp, "%d", &temperature);
+ /* try to open mountpoint */
+ if (statvfs(mountpoint, &fs) < 0) {
+ fprintf(stderr, "Could not get filesystem info.\n");
+ return smprintf("n/a");
+ }
- /* close temperature file */
- fclose(fp);
+ /* calculate percent */
+ perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
- /* return temperature in degrees */
- return smprintf("%d°C", temperature / 1000);
+ /* return perc */
+ return smprintf("%d%%", perc);
}
-/* cpu percentage */
+/* disk total */
char *
-get_cpu_usage()
+disk_total(const char *mountpoint)
{
- int perc;
- long double a[4], b[4];
- FILE *fp;
+ struct statvfs fs;
- /* open stat file */
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.");
- exit(1);
- }
+ /* try to open mountpoint */
+ if (statvfs(mountpoint, &fs) < 0) {
+ fprintf(stderr, "Could not get filesystem info.\n");
+ return smprintf("n/a");
+ }
- /* read values */
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
+ /* return total */
+ return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
+}
- /* close stat file */
- fclose(fp);
+/* disk used */
+char *
+disk_used(const char *mountpoint)
+{
+ struct statvfs fs;
- /* wait a second (for avg values) */
- sleep(1);
+ /* try to open mountpoint */
+ if (statvfs(mountpoint, &fs) < 0) {
+ fprintf(stderr, "Could not get filesystem info.\n");
+ return smprintf("n/a");
+ }
- /* open stat file */
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.");
- exit(1);
- }
+ /* 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)
+{
+ int entropy = 0;
+ FILE *fp;
- /* read values */
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
+ /* open entropy file */
+ if (!(fp = fopen("/proc/sys/kernel/random/entropy_avail", "r"))) {
+ fprintf(stderr, "Could not open entropy file.\n");
+ return smprintf("n/a");
+ }
- /* close stat file */
- fclose(fp);
+ /* extract entropy */
+ fscanf(fp, "%d", &entropy);
- /* 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]));
+ /* close entropy file */
+ fclose(fp);
- /* return perc as string */
- return smprintf("%d%%", perc);
+ /* return entropy */
+ return smprintf("%d", entropy);
}
-/* date and time */
+/* gid */
+char *
+gid(const char *null)
+{
+ gid_t gid;
+
+ if ((gid = getgid()) < 0) {
+ fprintf(stderr, "Could no get gid.");
+ return smprintf("n/a");
+ } else {
+ return smprintf("%d", gid);
+ }
+
+ return smprintf("n/a");
+}
+
+/* hostname */
+char *
+hostname(const char *null)
+{
+ 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("n/a");
+ }
+
+ /* extract hostname */
+ fscanf(fp, "%s\n", hostname);
+
+ /* close hostname file */
+ fclose(fp);
+
+ /* return entropy */
+ return smprintf("%s", hostname);
+}
+
+/* ip address */
char *
-get_datetime()
+ip(const char *interface)
{
- time_t tm;
- size_t bufsize = 64;
- char *buf = malloc(bufsize);
-
- /* get time in format */
- time(&tm);
- if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
- fprintf(stderr, "Strftime failed.\n");
- exit(1);
- }
-
- /* return time */
- return smprintf("%s", buf);
+ 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.");
+ return smprintf("n/a");
+ }
+
+ /* get the ip address */
+ 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, interface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) {
+ if (s != 0) {
+ fprintf(stderr, "Error getting IP address.");
+ return smprintf("n/a");
+ }
+ return smprintf("%s", host);
+ }
+ }
+
+ /* free the address */
+ freeifaddrs(ifaddr);
+
+ /* return n/a if nothing works */
+ return smprintf("n/a");
+}
+
+/* ram free */
+char *
+ram_free(const char *null)
+{
+ long free;
+ FILE *fp;
+
+ /* open meminfo file */
+ if (!(fp = fopen("/proc/meminfo", "r"))) {
+ fprintf(stderr, "Error opening meminfo file.");
+ return smprintf("n/a");
+ }
+
+ /* read the values */
+ fscanf(fp, "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 *
-get_ram_usage()
+ram_perc(const char *null)
+{
+ int perc;
+ long total, free, buffers, cached;
+ FILE *fp;
+
+ /* open meminfo file */
+ if (!(fp = fopen("/proc/meminfo", "r"))) {
+ fprintf(stderr, "Error opening meminfo file.");
+ return smprintf("n/a");
+ }
+
+ /* read the values */
+ fscanf(fp, "MemTotal: %ld kB\n", &total);
+ fscanf(fp, "MemFree: %ld kB\n", &free);
+ fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n", &buffers, &buffers);
+ fscanf(fp, "Cached: %ld kB\n", &cached);
+
+ /* close meminfo file */
+ fclose(fp);
+
+ /* calculate percentage */
+ perc = 100 * ((total - free) - (buffers + cached)) / total;
+
+ /* return perc as string */
+ return smprintf("%d%%", perc);
+}
+
+/* ram total */
+char *
+ram_total(const char *null)
+{
+ long total;
+ FILE *fp;
+
+ /* open meminfo file */
+ if (!(fp = fopen("/proc/meminfo", "r"))) {
+ fprintf(stderr, "Error opening meminfo file.");
+ return smprintf("n/a");
+ }
+
+ /* read the values */
+ fscanf(fp, "MemTotal: %ld kB\n", &total);
+
+ /* 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)
+{
+ long free, total, buffers, cached, used;
+ FILE *fp;
+
+ /* open meminfo file */
+ if (!(fp = fopen("/proc/meminfo", "r"))) {
+ fprintf(stderr, "Error opening meminfo file.");
+ return smprintf("n/a");
+ }
+
+ /* read the values */
+ fscanf(fp, "MemTotal: %ld kB\n", &total);
+ fscanf(fp, "MemFree: %ld kB\n", &free);
+ fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n", &buffers, &buffers);
+ fscanf(fp, "Cached: %ld kB\n", &cached);
+
+ /* close meminfo file */
+ fclose(fp);
+
+ /* calculate used */
+ used = total - free - buffers - cached;
+
+ /* return used ram as string */
+ return smprintf("%f", (float)used / 1024 / 1024);
+}
+
+/* custom shell command */
+char *
+run_command(const char* command)
{
- int perc;
- long total, free, buffers, cached;
- FILE *fp;
-
- /* open meminfo file */
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.");
- exit(1);
- }
-
- /* 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);
+ int good;
+ FILE *fp;
+ 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("n/a");
+ }
+
+ /* get command output text, save it to buffer */
+ fgets(buffer, sizeof(buffer) - 1, fp);
+
+ /* close it again */
+ 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';
+ }
+
+ /* return the output */
+ return smprintf("%s", buffer);
}
+/* temperature */
+char *
+temp(const char *file)
+{
+ int temperature;
+ FILE *fp;
+
+ /* open temperature file */
+ if (!(fp = fopen(file, "r"))) {
+ fprintf(stderr, "Could not open temperature file.\n");
+ return smprintf("n/a");
+ }
+
+ /* extract temperature */
+ fscanf(fp, "%d", &temperature);
+
+ /* close temperature file */
+ fclose(fp);
+
+ /* return temperature in degrees */
+ return smprintf("%d°C", temperature / 1000);
+}
+
+/* username */
+char *
+username(const char *null)
+{
+ 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("n/a");
+ }
+
+ return smprintf("n/a");
+}
+
+/* uid */
+char *
+uid(const char *null)
+{
+ register uid_t uid;
+
+ /* get the values */
+ uid = geteuid();
+
+ /* if it worked, return */
+ if (uid) {
+ return smprintf("%d", uid);
+ } else {
+ fprintf(stderr, "Could not get uid.\n");
+ return smprintf("n/a");
+ }
+
+ return smprintf("n/a");
+}
+
+
/* alsa volume percentage */
char *
-get_volume()
+vol_perc(const char *soundcard)
{
- 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);
+ 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;
+
+ /* 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");
+ return smprintf("n/a");
+ }
+ 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);
+ }
+
+ /* return the string (mute) */
+ if (!mute) {
+ return smprintf("mute");
+ } else {
+ return smprintf("%d%%", (vol * 100) / max);
+ }
}
/* wifi percentage */
char *
-get_wifi_signal()
+wifi_perc(const char *wificard)
+{
+ int bufsize = 255;
+ int strength;
+ char buf[bufsize];
+ 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");
+
+ /* open wifi file */
+ if(!(fp = fopen(path, "r"))) {
+ fprintf(stderr, "Error opening wifi operstate file.");
+ return smprintf("n/a");
+ }
+
+ /* read the status */
+ fgets(status, 5, fp);
+
+ /* close wifi file */
+ fclose(fp);
+
+ /* check if interface down */
+ if(strcmp(status, "up\n") != 0) {
+ return smprintf("n/a");
+ }
+
+ /* open wifi file */
+ if (!(fp = fopen("/proc/net/wireless", "r"))) {
+ fprintf(stderr, "Error opening wireless file.");
+ return smprintf("n/a");
+ }
+
+ /* extract the signal strength */
+ strcpy(needle, wificard);
+ strcat(needle, ":");
+ fgets(buf, bufsize, fp);
+ fgets(buf, bufsize, fp);
+ fgets(buf, bufsize, fp);
+ if ((datastart = strstr(buf, needle)) != NULL) {
+ datastart = strstr(buf, ":");
+ sscanf(datastart + 1, " %*d %d %*d %*d %*d %*d %*d %*d %*d %*d", &strength);
+ }
+
+ /* close wifi file */
+ fclose(fp);
+
+ /* return strength in percent */
+ return smprintf("%d%%", strength);
+}
+
+/* wifi essid */
+char *
+wifi_essid(const char *wificard)
{
- 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);
+ char id[IW_ESSID_MAX_SIZE+1];
+ int sockfd;
+ 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("n/a");
+ }
+ wreq.u.essid.pointer = id;
+ if (ioctl(sockfd,SIOCGIWESSID, &wreq) == -1) {
+ fprintf(stderr, "Get ESSID ioctl failed for interface %s\n", wificard);
+ return smprintf("n/a");
+ }
+
+ /* return the essid */
+ if (strcmp((char *)wreq.u.essid.pointer, "") == 0) {
+ return smprintf("n/a");
+ } else {
+ return smprintf("%s", (char *)wreq.u.essid.pointer);
+ }
}
/* main function */
int
-main()
+main(void)
{
- char status[1024];
- char *battery = NULL;
- char *cpu_temperature = NULL;
- char *cpu_usage = NULL;
- char *datetime = NULL;
- char *ram_usage = NULL;
- char *volume = NULL;
- char *wifi_signal = NULL;
-
- /* check config for sanity */
- if (config_check() < 0) {
- fprintf(stderr, "Config error, please check paths and recompile\n");
- exit(1);
- }
- /* open display */
- if (!(dpy = XOpenDisplay(0x0))) {
- fprintf(stderr, "Cannot open display!\n");
- exit(1);
- }
-
- /* return status every second */
- for (;;) {
- /* assign the values */
- battery = get_battery();
- cpu_temperature = get_cpu_temperature();
- cpu_usage = get_cpu_usage();
- datetime = get_datetime();
- ram_usage = get_ram_usage();
- volume = get_volume();
- wifi_signal = get_wifi_signal();
-
- /* return the status */
- sprintf(status, FORMATSTRING, ARGUMENTS);
- setstatus(status);
-
- /* free the values */
- free(battery);
- free(cpu_temperature);
- free(cpu_usage);
- free(datetime);
- free(ram_usage);
- free(volume);
- free(wifi_signal);
- sleep(update_interval);
- }
-
- /* close display */
- XCloseDisplay(dpy);
-
- /* exit successfully */
- return 0;
+ char status_string[1024];
+ struct arg argument;
+
+ /* try to open display */
+ if (!(dpy = XOpenDisplay(0x0))) {
+ fprintf(stderr, "Cannot open display!\n");
+ exit(1);
+ }
+
+ /* return status every interval */
+ for (;;) {
+ /* clear the string */
+ memset(status_string, 0, sizeof(status_string));
+
+ /* generate status_string */
+ for (size_t 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 (element == NULL) {
+ element = smprintf("n/a");
+ fprintf(stderr, "Failed to format output.");
+ }
+ strcat(status_string, element);
+ 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);
+ }
+
+ /* close display */
+ XCloseDisplay(dpy);
+
+ /* exit successfully */
+ return 0;
}