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/*
* Copy me if you can.
* by 20h
*/
#define _BSD_SOURCE
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <strings.h>
#include <sys/time.h>
#include <time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <X11/Xlib.h>
char *tzberlin = "Europe/Berlin";
static Display *dpy;
char *
smprintf(char *fmt, ...)
{
va_list fmtargs;
char *ret;
int len;
va_start(fmtargs, fmt);
len = vsnprintf(NULL, 0, fmt, fmtargs);
va_end(fmtargs);
ret = malloc(++len);
if (ret == NULL) {
perror("malloc");
exit(1);
}
va_start(fmtargs, fmt);
vsnprintf(ret, len, fmt, fmtargs);
va_end(fmtargs);
return ret;
}
void
settz(char *tzname)
{
setenv("TZ", tzname, 1);
}
char *
mktimes(char *fmt, char *tzname)
{
char buf[129];
time_t tim;
struct tm *timtm;
settz(tzname);
tim = time(NULL);
timtm = localtime(&tim);
if (timtm == NULL)
return smprintf("");
if (!strftime(buf, sizeof(buf)-1, fmt, timtm)) {
fprintf(stderr, "strftime == 0\n");
return smprintf("");
}
return smprintf("%s", buf);
}
void
setstatus(char *str)
{
XStoreName(dpy, DefaultRootWindow(dpy), str);
XSync(dpy, False);
}
char *
loadavg(void)
{
double avgs[3];
if (getloadavg(avgs, 3) < 0)
return smprintf("");
return smprintf("%.2f", avgs[1]);
}
char *
execscript(char *cmd)
{
FILE *fp;
char retval[1025], *rv;
memset(retval, 0, sizeof(retval));
fp = popen(cmd, "r");
if (fp == NULL)
return smprintf("");
rv = fgets(retval, sizeof(retval), fp);
pclose(fp);
if (rv == NULL)
return smprintf("");
retval[strlen(retval)-1] = '\0';
return smprintf("%s", retval);
}
int
main(void)
{
char *status;
char *avg;
char *tmbln;
char *ips;
char *track;
char *partition;
if (!(dpy = XOpenDisplay(NULL))) {
fprintf(stderr, "dwmstatus: cannot open display.\n");
return 1;
}
for (;;sleep(1)) {
avg = loadavg();
tmbln = mktimes("%a %d %b %H:%M", tzberlin);
ips = execscript("ip a | grep 'inet ' | grep -v 127.0.0.1 | tr -s ' ' | cut -f3 -d' '");
track = execscript("mpc -h core-a.lan | head -n 1 | grep -v volume || echo");
partition = execscript("df -lh | grep cryptroot | tr -s ' ' | cut -d ' ' -f 4");
status = smprintf(" %s | %s | %s | %s | %s ",
track, ips, avg, partition, tmbln);
setstatus(status);
free(avg);
free(tmbln);
free(ips);
free(track);
free(partition);
free(status);
}
XCloseDisplay(dpy);
return 0;
}
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