X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/94a62b864b56d8bad1fb68925dcee7c71015bc54..198df15d83d41fddca5b639bea398349ec0ec534:/slstatus.c

diff --git a/slstatus.c b/slstatus.c
index 08866d2..19bc127 100644
--- a/slstatus.c
+++ b/slstatus.c
@@ -1,634 +1,127 @@
 /* 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 <err.h>
+#include <errno.h>
 #include <locale.h>
-#include <netdb.h>
-#include <pwd.h>
-#include <stdarg.h>
+#include <signal.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"
+#include "arg.h"
+#include "slstatus.h"
+#include "util.h"
 
-typedef char *(*op_fun)();
 struct arg {
-	op_fun func;
-	const char *format;
+	const char *(*func)();
+	const char *fmt;
 	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 *);
-
+char *argv0;
+char buf[1024];
+static unsigned short int done;
 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 ap;
-	char tmp[120];
-	char *ret = NULL;
-
-	va_start(ap, fmt);
-	vsnprintf(tmp, sizeof(tmp)-1, fmt, ap);
-	tmp[strlen(tmp)+1] = '\0';
-
-	if (asprintf(&ret, "%s", tmp) < 0)
-		return NULL;
-
-	va_end(ap);
-	return ret;
-}
-
-static char *
-battery_perc(const char *battery)
-{
-	int now, full, perc;
-	char batterynowfile[64];
-	char batteryfullfile[64];
-	FILE *fp;
-
-	strlcpy(batterynowfile, BATTERY_PATH, sizeof(batterynowfile));
-	strlcat(batterynowfile, battery, sizeof(batterynowfile));
-	strlcat(batterynowfile, "/", sizeof(batterynowfile));
-	strlcat(batterynowfile, BATTERY_NOW, sizeof(batterynowfile));
-
-	strlcpy(batteryfullfile, BATTERY_PATH, sizeof(batteryfullfile));
-	strlcat(batteryfullfile, battery, sizeof(batteryfullfile));
-	strlcat(batteryfullfile, "/", sizeof(batteryfullfile));
-	strlcat(batteryfullfile, BATTERY_FULL, sizeof(batteryfullfile));
-
-	if (!(fp = fopen(batterynowfile, "r"))) {
-		fprintf(stderr, "Error opening battery file: %s.\n", batterynowfile);
-		return smprintf(UNKNOWN_STR);
-	}
-
-	fscanf(fp, "%i", &now);
-	fclose(fp);
-
-	if (!(fp = fopen(batteryfullfile, "r"))) {
-		fprintf(stderr, "Error opening battery file.\n");
-		return smprintf(UNKNOWN_STR);
-	}
-
-	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(UNKNOWN_STR);
-	}
-
-	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(UNKNOWN_STR);
-	}
-
-	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 t;
-	char timestr[80];
-
-	t = time(NULL);
-	if (strftime(timestr, sizeof(timestr), timeformat, localtime(&t)) == 0)
-		return smprintf(UNKNOWN_STR);
-
-	return smprintf("%s", timestr);
-}
-
-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(UNKNOWN_STR);
-	}
-	return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
-}
-
-static char *
-disk_perc(const char *mountpoint)
+terminate(const int signo)
 {
-	int perc = 0;
-	struct statvfs fs;
-
-	if (statvfs(mountpoint, &fs) < 0) {
-		fprintf(stderr, "Could not get filesystem info.\n");
-		return smprintf(UNKNOWN_STR);
-	}
-
-	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(UNKNOWN_STR);
-	}
+	(void)signo;
 
-	return smprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
+	done = 1;
 }
 
-static char *
-disk_used(const char *mountpoint)
+static void
+difftimespec(struct timespec *res, struct timespec *a, struct timespec *b)
 {
-	struct statvfs fs;
-
-	if (statvfs(mountpoint, &fs) < 0) {
-		fprintf(stderr, "Could not get filesystem info.\n");
-		return smprintf(UNKNOWN_STR);
-	}
-
-	return smprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
+	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 char *
-entropy(void)
+static void
+usage(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(UNKNOWN_STR);
-	}
-
-	fscanf(fp, "%d", &entropy);
-	fclose(fp);
-	return smprintf("%d", entropy);
+	fprintf(stderr, "usage: %s [-s]\n", argv0);
+	exit(1);
 }
 
-static char *
-gid(void)
+int
+main(int argc, char *argv[])
 {
-	gid_t gid = getgid();
-	return smprintf("%d", gid);
-}
+	struct sigaction act;
+	struct timespec start, current, diff, intspec, wait;
+	size_t i, len;
+	int sflag = 0;
+	char status[MAXLEN];
 
-static char *
-hostname(void)
-{
-	char hostname[HOST_NAME_MAX];
-	FILE *fp;
+	ARGBEGIN {
+		case 's':
+			sflag = 1;
+			break;
+		default:
+			usage();
+	} ARGEND
 
-	if (!(fp = fopen("/proc/sys/kernel/hostname", "r"))) {
-		fprintf(stderr, "Could not open hostname file.\n");
-		return smprintf(UNKNOWN_STR);
+	if (argc) {
+		usage();
 	}
 
-	fscanf(fp, "%s\n", hostname);
-	fclose(fp);
-	return smprintf("%s", hostname);
-}
+	setlocale(LC_ALL, "");
 
-static char *
-ip(const char *interface)
-{
-	struct ifaddrs *ifaddr, *ifa;
-	int s;
-	char host[NI_MAXHOST];
+	memset(&act, 0, sizeof(act));
+	act.sa_handler = terminate;
+	sigaction(SIGINT,  &act, NULL);
+	sigaction(SIGTERM, &act, NULL);
 
-	if (getifaddrs(&ifaddr) == -1) {
-		fprintf(stderr, "Error getting IP address.\n");
-		return smprintf(UNKNOWN_STR);
+	if (!sflag && !(dpy = XOpenDisplay(NULL))) {
+		fprintf(stderr, "slstatus: cannot open display");
+		return 1;
 	}
 
-	/* get the ip address */
-	for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
-		if (ifa->ifa_addr == NULL)
-			continue;
+	while (!done) {
+		clock_gettime(CLOCK_MONOTONIC, &start);
 
-		s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
+		status[0] = '\0';
+		for (i = len = 0; i < LEN(args); i++) {
+			const char * res = args[i].func(args[i].args);
+			res = (res == NULL) ? unknown_str : res;
+			len += snprintf(status + len, sizeof(status) - len,
+			                args[i].fmt, res);
 
-		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(UNKNOWN_STR);
+			if (len >= sizeof(status)) {
+				status[sizeof(status) - 1] = '\0';
 			}
-			return smprintf("%s", host);
 		}
-	}
-
-	/* free the address */
-	freeifaddrs(ifaddr);
-
-	return smprintf(UNKNOWN_STR);
-}
-
-static char *
-load_avg(void)
-{
-	double avgs[3];
-
-	if (getloadavg(avgs, 3) < 0) {
-		fprintf(stderr, "Error getting load avg.\n");
-		return smprintf(UNKNOWN_STR);
-	}
-
-	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(UNKNOWN_STR);
-	}
-
-	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(UNKNOWN_STR);
-	}
-
-	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(UNKNOWN_STR);
-	}
-
-	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(UNKNOWN_STR);
-	}
-
-	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(UNKNOWN_STR);
-	}
-
-	fgets(buffer, sizeof(buffer) - 1, fp);
-	pclose(fp);
-	for (int i = 0 ; i != sizeof(buffer); i++) {
-		if (buffer[i] == '\0') {
-			good = 1;
-			break;
+		if (sflag) {
+			printf("%s\n", status);
+		} else {
+			XStoreName(dpy, DefaultRootWindow(dpy), status);
+			XSync(dpy, False);
 		}
-	}
-	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(UNKNOWN_STR);
-	}
-
-	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(UNKNOWN_STR);
-	}
 
-	return smprintf(UNKNOWN_STR);
-}
-
-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(UNKNOWN_STR);
-	}
-
-	return smprintf(UNKNOWN_STR);
-}
-
-
-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(UNKNOWN_STR);
-	}
-	snd_mixer_selem_id_set_name(vol_info, ALSA_CHANNEL);
-	snd_mixer_selem_id_set_name(mute_info, ALSA_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 (!done) {
+			clock_gettime(CLOCK_MONOTONIC, &current);
+			difftimespec(&diff, &current, &start);
 
-	if(!(fp = fopen(path, "r"))) {
-		fprintf(stderr, "Error opening wifi operstate file.\n");
-		return smprintf(UNKNOWN_STR);
-	}
-
-	fgets(status, 5, fp);
-	fclose(fp);
-	if(strcmp(status, "up\n") != 0)
-		return smprintf(UNKNOWN_STR);
-
-	if (!(fp = fopen("/proc/net/wireless", "r"))) {
-		fprintf(stderr, "Error opening wireless file.\n");
-		return smprintf(UNKNOWN_STR);
-	}
-
-	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);
-	}
+			intspec.tv_sec = interval / 1000;
+			intspec.tv_nsec = (interval % 1000) * 1000000;
+			difftimespec(&wait, &intspec, &diff);
 
-	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(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(UNKNOWN_STR);
-	}
-
-	if (strcmp((char *)wreq.u.essid.pointer, "") == 0)
-		return smprintf(UNKNOWN_STR);
-	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(UNKNOWN_STR);
-				fprintf(stderr, "Failed to format output.\n");
+			if (wait.tv_sec >= 0) {
+				nanosleep(&wait, NULL);
 			}
-			strlcat(status_string, element, sizeof(status_string));
-			free(res);
-			free(element);
 		}
+	}
 
-		setstatus(status_string);
-		sleep(UPDATE_INTERVAL -1);
+	if (!sflag) {
+		XStoreName(dpy, DefaultRootWindow(dpy), NULL);
+		XCloseDisplay(dpy);
 	}
 
-	XCloseDisplay(dpy);
 	return 0;
 }