/* 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>
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 *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;
#include "config.h"
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 = malloc(sizeof(char)*12);
+ FILE *fp;
+
+ if (!state) {
+ warn("Failed to get battery state.");
+ return smprintf(UNKNOWN_STR);
+ }
+
+ 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, "%s", 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 *
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
memset(&hostname[strlen(hostname)-1], '\0',
sizeof(hostname) - strlen(hostname));
fclose(fp);
+
return smprintf("%s", hostname);
}
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;
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);
double avgs[3];
if (getloadavg(avgs, 3) < 0) {
- fprintf(stderr, "Error getting load avg.\n");
+ warnx("Error getting load avg.");
return smprintf(UNKNOWN_STR);
}
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);
}
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);
}
fclose(fp);
perc = 100 * ((total - free) - (buffers + cached)) / total;
+
return smprintf("%d%%", perc);
}
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);
}
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);
}
fclose(fp);
used = total - free - buffers - cached;
+
return smprintf("%f", (float)used / 1024 / 1024);
}
{
int good;
FILE *fp = popen(command, "r");
- char buffer[64];
+ char buffer[64] = "";
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);
}
}
if (good)
buffer[strlen(buffer)-1] = '\0';
+
return smprintf("%s", buffer);
}
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);
}
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 *
}
-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);
}
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 *
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);
}
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);
}
}
fclose(fp);
+
return smprintf("%d%%", strength);
}
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
+sighandler(const int signo)
+{
+ if (signo == SIGTERM || signo == SIGINT) {
+ done = 1;
+ }
+}
+
int
main(void)
{
size_t i;
char status_string[4096];
- char *res, *element;
+ char *res, *element, *status_old;
struct arg argument;
+ struct sigaction act;
+
+ 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));
+ XFetchName(dpy, DefaultRootWindow(dpy), &status_old);
+
+ while (!done) {
+ status_string[0] = '\0';
for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
argument = args[i];
if (argument.args == NULL)
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);
}
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;
}
+
+ XStoreName(dpy, DefaultRootWindow(dpy), status_old);
+ XSync(dpy, False);
+
XCloseDisplay(dpy);
return 0;