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- /* See LICENSE file for copyright and license details. */
-
- #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/ioctl.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>
-
- #undef strlcat
- #undef strlcpy
-
- #include "strlcat.h"
- #include "strlcpy.h"
-
- typedef char *(*op_fun)();
- struct arg {
- op_fun func;
- const char *format;
- const char *args;
- };
-
- static void setstatus(const char *);
- static char *smprintf(const char *, ...);
- static char *battery_perc(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 Display *dpy;
-
- #include "config.h"
-
- static void
- setstatus(const char *str)
- {
- /* set WM_NAME via X11 */
- XStoreName(dpy, DefaultRootWindow(dpy), str);
- XSync(dpy, False);
- }
-
- static char *
- 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;
- }
-
- static char *
- battery_perc(const char *battery)
- {
- int now, full, perc;
- char batterynowfile[64] = "";
- char batteryfullfile[64] = "";
- FILE *fp;
-
- strlcat(batterynowfile, batterypath, sizeof(batterynowfile));
- strlcat(batterynowfile, battery, sizeof(batterynowfile));
- strlcat(batterynowfile, "/", sizeof(batterynowfile));
- strlcat(batterynowfile, batterynow, sizeof(batterynowfile));
-
- strlcat(batteryfullfile, batterypath, sizeof(batteryfullfile));
- strlcat(batteryfullfile, battery, sizeof(batteryfullfile));
- strlcat(batteryfullfile, "/", sizeof(batteryfullfile));
- strlcat(batteryfullfile, batteryfull, sizeof(batteryfullfile));
-
- if (!(fp = fopen(batterynowfile, "r"))) {
- fprintf(stderr, "Error opening battery file: %s.\n", batterynowfile);
- return smprintf(unknowntext);
- }
-
- fscanf(fp, "%i", &now);
- fclose(fp);
-
- if (!(fp = fopen(batteryfullfile, "r"))) {
- fprintf(stderr, "Error opening battery file.\n");
- return smprintf(unknowntext);
- }
-
- fscanf(fp, "%i", &full);
- fclose(fp);
-
- perc = now / (full / 100);
-
- return smprintf("%d%%", perc);
- }
-
- static char *
- cpu_perc(void)
- {
- int perc;
- long double a[4], b[4];
- FILE *fp;
-
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.\n");
- return smprintf(unknowntext);
- }
-
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
- fclose(fp);
-
- /* wait a second (for avg values) */
- sleep(1);
-
- if (!(fp = fopen("/proc/stat","r"))) {
- fprintf(stderr, "Error opening stat file.\n");
- return smprintf(unknowntext);
- }
-
- fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
- fclose(fp);
- 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 smprintf("%d%%", perc);
- }
-
- 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(&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);
- }
-
- setlocale(LC_TIME, "C");
- char *ret = smprintf("%s", buf);
- free(buf);
- return ret;
- }
-
- static char *
- disk_free(const char *mountpoint)
- {
- struct statvfs fs;
-
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
- }
- return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
- }
-
- static char *
- disk_perc(const char *mountpoint)
- {
- int perc = 0;
- struct statvfs fs;
-
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
- }
-
- perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
- return smprintf("%d%%", perc);
- }
-
- static char *
- disk_total(const char *mountpoint)
- {
- struct statvfs fs;
-
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
- }
-
- return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
- }
-
- static char *
- disk_used(const char *mountpoint)
- {
- struct statvfs fs;
-
- if (statvfs(mountpoint, &fs) < 0) {
- fprintf(stderr, "Could not get filesystem info.\n");
- return smprintf(unknowntext);
- }
-
- return smprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
- }
-
- static char *
- entropy(void)
- {
- int entropy = 0;
- FILE *fp;
-
- if (!(fp = fopen("/proc/sys/kernel/random/entropy_avail", "r"))) {
- fprintf(stderr, "Could not open entropy file.\n");
- return smprintf(unknowntext);
- }
-
- fscanf(fp, "%d", &entropy);
- fclose(fp);
- return smprintf("%d", entropy);
- }
-
- static char *
- gid(void)
- {
- gid_t gid = getgid();
- return smprintf("%d", gid);
- }
-
- static char *
- hostname(void)
- {
- char hostname[HOST_NAME_MAX];
- FILE *fp;
-
- if (!(fp = fopen("/proc/sys/kernel/hostname", "r"))) {
- fprintf(stderr, "Could not open hostname file.\n");
- return smprintf(unknowntext);
- }
-
- fscanf(fp, "%s\n", hostname);
- fclose(fp);
- return smprintf("%s", hostname);
- }
-
- static char *
- ip(const char *interface)
- {
- struct ifaddrs *ifaddr, *ifa;
- int s;
- char host[NI_MAXHOST];
-
- if (getifaddrs(&ifaddr) == -1) {
- fprintf(stderr, "Error getting IP address.\n");
- return smprintf(unknowntext);
- }
-
- /* 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.\n");
- return smprintf(unknowntext);
- }
- return smprintf("%s", host);
- }
- }
-
- /* free the address */
- freeifaddrs(ifaddr);
-
- return smprintf(unknowntext);
- }
-
- static char *
- load_avg(void)
- {
- double avgs[3];
-
- if (getloadavg(avgs, 3) < 0) {
- fprintf(stderr, "Error getting load avg.\n");
- return smprintf(unknowntext);
- }
-
- return smprintf("%.2f %.2f %.2f", avgs[0], avgs[1], avgs[2]);
- }
-
- static char *
- ram_free(void)
- {
- long free;
- FILE *fp;
-
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
- }
-
- fscanf(fp, "MemFree: %ld kB\n", &free);
- fclose(fp);
- return smprintf("%f", (float)free / 1024 / 1024);
- }
-
- static char *
- ram_perc(void)
- {
- int perc;
- long total, free, buffers, cached;
- FILE *fp;
-
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
- }
-
- 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);
-
- fclose(fp);
- perc = 100 * ((total - free) - (buffers + cached)) / total;
- return smprintf("%d%%", perc);
- }
-
- static char *
- ram_total(void)
- {
- long total;
- FILE *fp;
-
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
- }
-
- fscanf(fp, "MemTotal: %ld kB\n", &total);
- fclose(fp);
- return smprintf("%f", (float)total / 1024 / 1024);
- }
-
- static char *
- ram_used(void)
- {
- long free, total, buffers, cached, used;
- FILE *fp;
-
- if (!(fp = fopen("/proc/meminfo", "r"))) {
- fprintf(stderr, "Error opening meminfo file.\n");
- return smprintf(unknowntext);
- }
-
- 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);
-
- fclose(fp);
- used = total - free - buffers - cached;
- return smprintf("%f", (float)used / 1024 / 1024);
- }
-
- static char *
- run_command(const char* command)
- {
- int good;
- FILE *fp;
- char buffer[64];
-
- if (!(fp = popen(command, "r"))) {
- fprintf(stderr, "Could not get command output for: %s.\n", command);
- return smprintf(unknowntext);
- }
-
- fgets(buffer, sizeof(buffer) - 1, fp);
- pclose(fp);
- for (int i = 0 ; i != sizeof(buffer); i++) {
- if (buffer[i] == '\0') {
- good = 1;
- break;
- }
- }
- if (good)
- buffer[strlen(buffer) - 1] = '\0';
- return smprintf("%s", buffer);
- }
-
- static char *
- temp(const char *file)
- {
- int temperature;
- FILE *fp;
-
- if (!(fp = fopen(file, "r"))) {
- fprintf(stderr, "Could not open temperature file.\n");
- return smprintf(unknowntext);
- }
-
- fscanf(fp, "%d", &temperature);
- fclose(fp);
- return smprintf("%d°C", temperature / 1000);
- }
-
- static char *
- uptime(void)
- {
- struct sysinfo info;
- int hours = 0;
- int minutes = 0;
-
- sysinfo(&info);
- hours = info.uptime / 3600;
- minutes = (info.uptime - hours * 3600 ) / 60;
-
- return smprintf("%dh %dm", hours, minutes);
- }
-
- static char *
- username(void)
- {
- register struct passwd *pw;
- register uid_t uid;
-
- uid = geteuid();
- pw = getpwuid(uid);
-
- if (pw)
- return smprintf("%s", pw->pw_name);
- else {
- fprintf(stderr, "Could not get username.\n");
- return smprintf(unknowntext);
- }
-
- return smprintf(unknowntext);
- }
-
- static char *
- uid(void)
- {
- register uid_t uid;
-
- uid = geteuid();
-
- if (uid)
- return smprintf("%d", uid);
- else {
- fprintf(stderr, "Could not get uid.\n");
- return smprintf(unknowntext);
- }
-
- return smprintf(unknowntext);
- }
-
-
- static char *
- vol_perc(const char *soundcard)
- {
- 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;
-
- 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);
- 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);
-
- 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);
-
- if (!mute)
- return smprintf("mute");
- else
- return smprintf("%d%%", (vol * 100) / max);
- }
-
- static char *
- 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;
-
- memset(path, 0, sizeof path);
- strlcat(path, "/sys/class/net/", sizeof(path));
- strlcat(path, wificard, sizeof(path));
- strlcat(path, "/operstate", sizeof(path));
-
- if(!(fp = fopen(path, "r"))) {
- fprintf(stderr, "Error opening wifi operstate file.\n");
- return smprintf(unknowntext);
- }
-
- fgets(status, 5, fp);
- fclose(fp);
- if(strcmp(status, "up\n") != 0)
- return smprintf(unknowntext);
-
- if (!(fp = fopen("/proc/net/wireless", "r"))) {
- fprintf(stderr, "Error opening wireless file.\n");
- return smprintf(unknowntext);
- }
-
- 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);
- }
-
- fclose(fp);
- return smprintf("%d%%", strength);
- }
-
- static char *
- wifi_essid(const char *wificard)
- {
- char id[IW_ESSID_MAX_SIZE+1];
- int sockfd;
- struct iwreq wreq;
-
- memset(&wreq, 0, sizeof(struct iwreq));
- wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
- sprintf(wreq.ifr_name, wificard);
- if((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
- fprintf(stderr, "Cannot open socket for interface: %s\n", wificard);
- return smprintf(unknowntext);
- }
- 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);
- }
-
- if (strcmp((char *)wreq.u.essid.pointer, "") == 0)
- return smprintf(unknowntext);
- else
- return smprintf("%s", (char *)wreq.u.essid.pointer);
- }
-
- int
- main(void)
- {
- size_t i;
- char status_string[4096];
- char *res, *element;
- struct arg argument;
-
- if (!(dpy = XOpenDisplay(0x0))) {
- fprintf(stderr, "Cannot open display!\n");
- exit(1);
- }
-
- for (;;) {
- memset(status_string, 0, sizeof(status_string));
- for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
- argument = args[i];
- if (argument.args == NULL)
- res = argument.func();
- else
- res = argument.func(argument.args);
- element = smprintf(argument.format, res);
- if (element == NULL) {
- element = smprintf(unknowntext);
- fprintf(stderr, "Failed to format output.\n");
- }
- strlcat(status_string, element, sizeof(status_string));
- free(res);
- free(element);
- }
-
- setstatus(status_string);
- sleep(update_interval -1);
- }
-
- XCloseDisplay(dpy);
- return 0;
- }
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