X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/2afea979877ae12226ab397355f3bf8c8e124e91..87eae6db0398ec1ddb98d67fea36339ff58eb2a5:/slstatus.c

diff --git a/slstatus.c b/slstatus.c
index 53de9cb..be124f3 100644
--- a/slstatus.c
+++ b/slstatus.c
@@ -1,12 +1,14 @@
 /* See LICENSE file for copyright and license details. */
 
 #include <alsa/asoundlib.h>
+#include <err.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>
@@ -24,6 +26,7 @@
 #undef strlcat
 #undef strlcpy
 
+#include "arg.h"
 #include "strlcat.h"
 #include "strlcpy.h"
 #include "concat.h"
@@ -38,6 +41,7 @@ struct arg {
 
 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 *);
@@ -61,7 +65,12 @@ static char *username(void);
 static char *vol_perc(const char *);
 static char *wifi_perc(const char *);
 static char *wifi_essid(const char *);
+static void set_status(const char *);
+static void sighandler(const int);
+static void usage(void);
 
+char *argv0;
+static unsigned short int delay, done, dflag, oflag;
 static Display *dpy;
 
 #include "config.h"
@@ -93,38 +102,44 @@ smprintf(const char *fmt, ...)
 static char *
 battery_perc(const char *battery)
 {
-	int now, full, perc;
+	int perc;
 	FILE *fp;
 
-	ccat(4, BATTERY_PATH, battery, "/", BATTERY_NOW);
-
+	ccat(3, "/sys/class/power_supply/", battery, "/capacity");
 	fp = fopen(concat, "r");
 	if (fp == NULL) {
-		fprintf(stderr, "Error opening battery file: %s: %s\n",
-						concat,
-						strerror(errno));
+		warn("Error opening battery file: %s", concat);
 		return smprintf(UNKNOWN_STR);
 	}
-
-	fscanf(fp, "%i", &now);
+	fscanf(fp, "%i", &perc);
 	fclose(fp);
 
-	ccat(4, BATTERY_PATH, battery, "/", BATTERY_FULL);
+	return smprintf("%d%%", perc);
+}
+
+static char *
+battery_state(const char *battery)
+{
+	char state[12]; 
+	FILE *fp;
 
+	ccat(3, "/sys/class/power_supply/", battery, "/status");
 	fp = fopen(concat, "r");
 	if (fp == NULL) {
-		fprintf(stderr, "Error opening battery file: %s: %s\n",
-						concat,
-						strerror(errno));
+		warn("Error opening battery file: %s", concat);
 		return smprintf(UNKNOWN_STR);
 	}
-
-	fscanf(fp, "%i", &full);
+	fscanf(fp, "%12s", state);
 	fclose(fp);
 
-	perc = now / (full / 100);
-
-	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("?");
 }
 
 static char *
@@ -135,26 +150,26 @@ cpu_perc(void)
 	FILE *fp = fopen("/proc/stat","r");
 
 	if (fp == NULL) {
-		fprintf(stderr, "Error opening stat file: %s\n",
-						strerror(errno));
+		warn("Error opening stat file");
 		return smprintf(UNKNOWN_STR);
 	}
 
 	fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
 	fclose(fp);
 
-	sleep(1);
+	delay = (UPDATE_INTERVAL - (UPDATE_INTERVAL - 1));
+	sleep(delay);
 
 	fp = fopen("/proc/stat","r");
 	if (fp == NULL) {
-		fprintf(stderr, "Error opening stat file: %s\n",
-						strerror(errno));
+		warn("Error opening stat file");
 		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);
 }
 
@@ -177,10 +192,10 @@ disk_free(const char *mountpoint)
 	struct statvfs fs;
 
 	if (statvfs(mountpoint, &fs) < 0) {
-		fprintf(stderr, "Could not get filesystem info: %s\n",
-						strerror(errno));
+		warn("Could not get filesystem info");
 		return smprintf(UNKNOWN_STR);
 	}
+
 	return smprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
 }
 
@@ -191,12 +206,12 @@ disk_perc(const char *mountpoint)
 	struct statvfs fs;
 
 	if (statvfs(mountpoint, &fs) < 0) {
-		fprintf(stderr, "Could not get filesystem info: %s\n",
-						strerror(errno));
+		warn("Could not get filesystem info");
 		return smprintf(UNKNOWN_STR);
 	}
 
 	perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
+
 	return smprintf("%d%%", perc);
 }
 
@@ -206,8 +221,7 @@ disk_total(const char *mountpoint)
 	struct statvfs fs;
 
 	if (statvfs(mountpoint, &fs) < 0) {
-		fprintf(stderr, "Could not get filesystem info: %s\n",
-						strerror(errno));
+		warn("Could not get filesystem info");
 		return smprintf(UNKNOWN_STR);
 	}
 
@@ -220,8 +234,7 @@ disk_used(const char *mountpoint)
 	struct statvfs fs;
 
 	if (statvfs(mountpoint, &fs) < 0) {
-		fprintf(stderr, "Could not get filesystem info: %s\n",
-						strerror(errno));
+		warn("Could not get filesystem info");
 		return smprintf(UNKNOWN_STR);
 	}
 
@@ -235,13 +248,13 @@ entropy(void)
 	FILE *fp = fopen("/proc/sys/kernel/random/entropy_avail", "r");
 
 	if (fp == NULL) {
-		fprintf(stderr, "Could not open entropy file: %s\n",
-						strerror(errno));
+		warn("Could not open entropy file");
 		return smprintf(UNKNOWN_STR);
 	}
 
 	fscanf(fp, "%d", &entropy);
 	fclose(fp);
+
 	return smprintf("%d", entropy);
 }
 
@@ -258,16 +271,14 @@ hostname(void)
 	FILE *fp = fopen("/proc/sys/kernel/hostname", "r");
 
 	if (fp == NULL) {
-		fprintf(stderr, "Could not open hostname file: %s\n",
-						strerror(errno));
+		warn("Could not open hostname file");
 		return smprintf(UNKNOWN_STR);
 	}
 
 	fgets(hostname, sizeof(hostname), fp);
-	/* FIXME: needs improvement */
-	memset(&hostname[strlen(hostname)-1], '\0',
-		sizeof(hostname) - strlen(hostname));
+	hostname[strlen(hostname)-1] = '\0';
 	fclose(fp);
+
 	return smprintf("%s", hostname);
 }
 
@@ -279,12 +290,10 @@ ip(const char *interface)
 	char host[NI_MAXHOST];
 
 	if (getifaddrs(&ifaddr) == -1) {
-		fprintf(stderr, "Error getting IP address: %s\n",
-						strerror(errno));
+		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)
 			continue;
@@ -294,14 +303,13 @@ ip(const char *interface)
 
 		if ((strcmp(ifa->ifa_name, interface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) {
 			if (s != 0) {
-				fprintf(stderr, "Error getting IP address.\n");
+				warnx("Error getting IP address.");
 				return smprintf(UNKNOWN_STR);
 			}
 			return smprintf("%s", host);
 		}
 	}
 
-	/* free the address */
 	freeifaddrs(ifaddr);
 
 	return smprintf(UNKNOWN_STR);
@@ -313,7 +321,7 @@ load_avg(void)
 	double avgs[3];
 
 	if (getloadavg(avgs, 3) < 0) {
-		fprintf(stderr, "Error getting load avg.\n");
+		warnx("Error getting load avg.");
 		return smprintf(UNKNOWN_STR);
 	}
 
@@ -327,13 +335,13 @@ ram_free(void)
 	FILE *fp = fopen("/proc/meminfo", "r");
 
 	if (fp == NULL) {
-		fprintf(stderr, "Error opening meminfo file: %s\n",
-						strerror(errno));
+		warn("Error opening meminfo file");
 		return smprintf(UNKNOWN_STR);
 	}
 
 	fscanf(fp, "MemFree: %ld kB\n", &free);
 	fclose(fp);
+
 	return smprintf("%f", (float)free / 1024 / 1024);
 }
 
@@ -345,8 +353,7 @@ ram_perc(void)
 	FILE *fp = fopen("/proc/meminfo", "r");
 
 	if (fp == NULL) {
-		fprintf(stderr, "Error opening meminfo file: %s\n",
-						strerror(errno));
+		warn("Error opening meminfo file");
 		return smprintf(UNKNOWN_STR);
 	}
 
@@ -357,6 +364,7 @@ ram_perc(void)
 
 	fclose(fp);
 	perc = 100 * ((total - free) - (buffers + cached)) / total;
+
 	return smprintf("%d%%", perc);
 }
 
@@ -367,13 +375,13 @@ ram_total(void)
 	FILE *fp = fopen("/proc/meminfo", "r");
 
 	if (fp == NULL) {
-		fprintf(stderr, "Error opening meminfo file: %s\n",
-						strerror(errno));
+		warn("Error opening meminfo file");
 		return smprintf(UNKNOWN_STR);
 	}
 
 	fscanf(fp, "MemTotal: %ld kB\n", &total);
 	fclose(fp);
+
 	return smprintf("%f", (float)total / 1024 / 1024);
 }
 
@@ -384,8 +392,7 @@ ram_used(void)
 	FILE *fp = fopen("/proc/meminfo", "r");
 
 	if (fp == NULL) {
-		fprintf(stderr, "Error opening meminfo file: %s\n",
-						strerror(errno));
+		warn("Error opening meminfo file");
 		return smprintf(UNKNOWN_STR);
 	}
 
@@ -396,32 +403,25 @@ ram_used(void)
 
 	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 = popen(command, "r");
-	char buffer[64];
+	char buffer[64] = "\0";
 
 	if (fp == NULL) {
-		fprintf(stderr, "Could not get command output for: %s: %s\n",
-						command, strerror(errno));
+		warn("Could not get command output for: %s", command);
 		return smprintf(UNKNOWN_STR);
 	}
 
-	fgets(buffer, sizeof(buffer)-1, fp);
+	fgets(buffer, sizeof(buffer), fp);
+	buffer[sizeof(buffer)-1] = '\0';
+
 	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);
 }
 
@@ -432,13 +432,13 @@ temp(const char *file)
 	FILE *fp = fopen(file, "r");
 
 	if (fp == NULL) {
-		fprintf(stderr, "Could not open temperature file: %s\n",
-							strerror(errno));
+		warn("Could not open temperature file");
 		return smprintf(UNKNOWN_STR);
 	}
 
 	fscanf(fp, "%d", &temperature);
 	fclose(fp);
+
 	return smprintf("%d°C", temperature / 1000);
 }
 
@@ -462,12 +462,12 @@ username(void)
 	uid_t uid = geteuid();
 	struct passwd *pw = getpwuid(uid);
 
-	if (pw == NULL)
-		return smprintf("%s", pw->pw_name);
+	if (pw == NULL) {
+		warn("Could not get username");
+		return smprintf(UNKNOWN_STR);
+	}
 
-	fprintf(stderr, "Could not get username: %s\n",
-					strerror(errno));
-	return smprintf(UNKNOWN_STR);
+	return smprintf("%s", pw->pw_name);
 }
 
 static char *
@@ -477,26 +477,26 @@ uid(void)
 }
 
 
-static char * 
-vol_perc(const char *snd_card)
-{ /* thanks to botika for this function */
+static char *
+vol_perc(const char *soundcard)
+{
 	long int vol, max, min;
 	snd_mixer_t *handle;
 	snd_mixer_elem_t *elem;
 	snd_mixer_selem_id_t *s_elem;
 
 	snd_mixer_open(&handle, 0);
-	snd_mixer_attach(handle, "default");
+	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, snd_card);
+	snd_mixer_selem_id_set_name(s_elem, "Master");
 	elem = snd_mixer_find_selem(handle, s_elem);
 
 	if (elem == NULL) {
 		snd_mixer_selem_id_free(s_elem);
 		snd_mixer_close(handle);
-		perror("alsa error");
+		warn("Failed to get volume percentage for: %s", soundcard);
 		return smprintf(UNKNOWN_STR);
 	}
 
@@ -507,7 +507,7 @@ vol_perc(const char *snd_card)
 	snd_mixer_selem_id_free(s_elem);
 	snd_mixer_close(handle);
 
-	return smprintf("%d", (vol * 100) / max);
+	return smprintf("%d%%", ((uint_fast16_t)(vol * 100) / max));
 }
 
 static char *
@@ -519,13 +519,12 @@ wifi_perc(const char *wificard)
 	char status[5];
 	FILE *fp;
 
-	ccat(3, "/sys/class/net", wificard, "/operstate");
+	ccat(3, "/sys/class/net/", wificard, "/operstate");
 
 	fp = fopen(concat, "r");
 
-	if(fp == NULL) {
-		fprintf(stderr, "Error opening wifi operstate file: %s\n",
-							strerror(errno));
+	if (fp == NULL) {
+		warn("Error opening wifi operstate file");
 		return smprintf(UNKNOWN_STR);
 	}
 
@@ -536,8 +535,7 @@ wifi_perc(const char *wificard)
 
 	fp = fopen("/proc/net/wireless", "r");
 	if (fp == NULL) {
-		fprintf(stderr, "Error opening wireless file: %s\n",
-						strerror(errno));
+		warn("Error opening wireless file");
 		return smprintf(UNKNOWN_STR);
 	}
 
@@ -553,6 +551,7 @@ wifi_perc(const char *wificard)
 	}
 
 	fclose(fp);
+
 	return smprintf("%d%%", strength);
 }
 
@@ -566,36 +565,85 @@ wifi_essid(const char *wificard)
 	memset(&wreq, 0, sizeof(struct iwreq));
 	wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
 	sprintf(wreq.ifr_name, wificard);
-	if(sockfd == -1) {
-		fprintf(stderr, "Cannot open socket for interface: %s: %s\n",
-						wificard, strerror(errno));
+	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: %s\n",
-						wificard, strerror(errno));
+		warn("Get ESSID ioctl failed for interface %s", wificard);
 		return smprintf(UNKNOWN_STR);
 	}
 
+	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
+set_status(const char *str)
+{
+	XStoreName(dpy, DefaultRootWindow(dpy), str);
+	XSync(dpy, False);
+}
+
+static void
+sighandler(const int signo)
+{
+	if (signo == SIGTERM || signo == SIGINT)
+		done = 1;
+}
+
+static void
+usage(void)
+{
+	fprintf(stderr,
+		"slstatus (c) 2016, drkhsh\n"
+		"usage: %s [-dho]\n",
+		argv0);
+	exit(1);
+}
+
+
+
 int
-main(void)
+main(int argc, char *argv[])
 {
-	size_t i;
+	unsigned short int i;
 	char status_string[4096];
 	char *res, *element;
 	struct arg argument;
+	struct sigaction act;
+
+	ARGBEGIN {
+		case 'd':
+			dflag = 1;
+			break;
+		case 'o':
+			oflag = 1;
+			break;
+		default:
+			usage();
+	} ARGEND
+
+	if (dflag && oflag)
+		usage();
+	if (dflag)
+		(void)daemon(1, 1);
+
+	memset(&act, 0, sizeof(act));
+	act.sa_handler = sighandler;
+	sigaction(SIGINT,  &act, 0);
+	sigaction(SIGTERM, &act, 0);
 
 	dpy = XOpenDisplay(NULL);
 
-	for (;;) {
-		memset(status_string, 0, sizeof(status_string));
+	while (!done) {
+		status_string[0] = '\0';
+
 		for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
 			argument = args[i];
 			if (argument.args == NULL)
@@ -605,15 +653,29 @@ main(void)
 			element = smprintf(argument.format, res);
 			if (element == NULL) {
 				element = smprintf(UNKNOWN_STR);
-				fprintf(stderr, "Failed to format output.\n");
+				warnx("Failed to format output.");
 			}
 			strlcat(status_string, element, sizeof(status_string));
 			free(res);
 			free(element);
 		}
-		XStoreName(dpy, DefaultRootWindow(dpy), status_string);
-		XSync(dpy, False);
+
+		if (!oflag)
+			set_status(status_string);
+		else
+			printf("%s\n", status_string);
+
+		/*
+		 * subtract delay time spend in function
+		 * calls from the actual global delay time
+		 */
+		sleep(UPDATE_INTERVAL - delay);
+		delay = 0;
 	}
+
+	if (!oflag)
+		set_status(NULL);
+
 	XCloseDisplay(dpy);
 
 	return 0;