/* global libraries */
#include <alsa/asoundlib.h>
+#include <fcntl.h>
+#include <locale.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
#include <X11/Xlib.h>
/* local libraries */
#include "config.h"
+/* check file macro */
+#define CHECK_FILE(X,Y) do { \
+ if (stat(X,&Y) < 0) return -1; \
+ if (!S_ISREG(Y.st_mode)) return -1; \
+} while (0);
+
/* functions */
+int config_check();
void setstatus(char *str);
char *smprintf(char *fmt, ...);
char *get_battery();
/* global variables */
static Display *dpy;
+/* check configured paths */
+int
+config_check()
+{
+ struct stat fs;
+
+ /* check all files in the config.h file */
+ CHECK_FILE(batterynowfile, fs);
+ CHECK_FILE(batteryfullfile, fs);
+ CHECK_FILE(tempfile, fs);
+
+ /* check update interval */
+ if (update_interval < 1)
+ return -1;
+
+ /* exit successfully */
+ return 0;
+}
+
/* set statusbar (WM_NAME) */
void
setstatus(char *str)
smprintf(char *fmt, ...)
{
va_list fmtargs;
- char *ret;
- int len;
-
+ char *ret = NULL;
va_start(fmtargs, fmt);
- len = vsnprintf(NULL, 0, fmt, fmtargs);
- va_end(fmtargs);
-
- ret = malloc(++len);
- if (ret == NULL) {
- fprintf(stderr, "Malloc error.");
- exit(1);
- }
-
- va_start(fmtargs, fmt);
- vsnprintf(ret, len, fmt, fmtargs);
+ if (vasprintf(&ret, fmt, fmtargs) < 0)
+ return NULL;
va_end(fmtargs);
return ret;
char *
get_battery()
{
- int battery_now, battery_full, battery_perc;
+ int now, full, perc;
FILE *fp;
/* open battery now file */
if (!(fp = fopen(batterynowfile, "r"))) {
fprintf(stderr, "Error opening battery file.");
- exit(1);
+ return smprintf("n/a");
}
/* read value */
- fscanf(fp, "%i", &battery_now);
+ fscanf(fp, "%i", &now);
/* close battery now file */
fclose(fp);
/* open battery full file */
if (!(fp = fopen(batteryfullfile, "r"))) {
fprintf(stderr, "Error opening battery file.");
- exit(1);
+ return smprintf("n/a");
}
/* read value */
- fscanf(fp, "%i", &battery_full);
+ fscanf(fp, "%i", &full);
/* close battery full file */
fclose(fp);
/* calculate percent */
- battery_perc = battery_now / (battery_full / 100);
+ perc = now / (full / 100);
- /* return batt_perc as string */
- return smprintf("%d%%", battery_perc);
+ /* return perc as string */
+ return smprintf("%d%%", perc);
}
/* cpu temperature */
/* open temperature file */
if (!(fp = fopen(tempfile, "r"))) {
fprintf(stderr, "Could not open temperature file.\n");
- exit(1);
+ return smprintf("n/a");
}
/* extract temperature */
char *
get_cpu_usage()
{
- int cpu_perc;
+ int perc;
long double a[4], b[4];
FILE *fp;
/* open stat file */
if (!(fp = fopen("/proc/stat","r"))) {
fprintf(stderr, "Error opening stat file.");
- exit(1);
+ return smprintf("n/a");
}
/* read values */
/* open stat file */
if (!(fp = fopen("/proc/stat","r"))) {
fprintf(stderr, "Error opening stat file.");
- exit(1);
+ return smprintf("n/a");
}
/* read values */
fclose(fp);
/* calculate avg in this second */
- cpu_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]));
+ 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 cpu_perc as string */
- return smprintf("%d%%", cpu_perc);
+ /* return perc as string */
+ return smprintf("%d%%", perc);
}
/* date and time */
get_datetime()
{
time_t tm;
- size_t bufsize = 19;
+ size_t bufsize = 64;
char *buf = malloc(bufsize);
/* get time in format */
time(&tm);
+ setlocale(LC_TIME, "");
if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
+ setlocale(LC_TIME, "C");
fprintf(stderr, "Strftime failed.\n");
- exit(1);
+ return smprintf("n/a");
}
+ setlocale(LC_TIME, "C");
/* return time */
- return buf;
+ return smprintf("%s", buf);
}
/* ram percentage */
char *
get_ram_usage()
{
- int ram_perc;
+ int perc;
long total, free, buffers, cached;
FILE *fp;
/* open meminfo file */
if (!(fp = fopen("/proc/meminfo", "r"))) {
fprintf(stderr, "Error opening meminfo file.");
- exit(1);
+ return smprintf("n/a");
}
/* read the values */
fclose(fp);
/* calculate percentage */
- ram_perc = 100 * ((total - free) - (buffers + cached)) / total;
+ perc = 100 * ((total - free) - (buffers + cached)) / total;
- /* return ram_perc as string */
- return smprintf("%d%%",ram_perc);
+ /* return perc as string */
+ return smprintf("%d%%", perc);
}
/* alsa volume percentage */
FILE *fp;
/* generate the path name */
-
memset(path, 0, sizeof path);
strcat(path, path_start);
strcat(path, wificard);
/* open wifi file */
if(!(fp = fopen(path, "r"))) {
fprintf(stderr, "Error opening wifi operstate file.");
- exit(1);
+ return smprintf("n/a");
}
/* read the status */
/* check if interface down */
if(strcmp(status, "up\n") != 0){
- return "n/a";
+ return smprintf("n/a");
}
/* open wifi file */
if (!(fp = fopen("/proc/net/wireless", "r"))) {
fprintf(stderr, "Error opening wireless file.");
- exit(1);
+ return smprintf("n/a");
}
/* extract the signal strength */
char *volume = NULL;
char *wifi_signal = NULL;
+ /* check config for sanity */
+ if (config_check() < 0) {
+ fprintf(stderr, "Config error, please check paths and interval and recompile!\n");
+ exit(1);
+ }
+
/* open display */
if (!(dpy = XOpenDisplay(0x0))) {
fprintf(stderr, "Cannot open display!\n");
free(ram_usage);
free(volume);
free(wifi_signal);
+
+ /* wait, "update_interval - 1" because of get_cpu_usage() which uses 1 second */
+ sleep(update_interval -1);
}
/* close display */