Fixed broken wifi

[slstatus.git] / slstatus.c

diff --git a/slstatus.c b/slstatus.c
index 962744a..467d32e 100644 (file)
--- a/slstatus.c
+++ b/slstatus.c
@@ -1,5 +1,6 @@
 /* See LICENSE file for copyright and license details. */
 
 /* See LICENSE file for copyright and license details. */
 

+/* global libraries */

 #include <alsa/asoundlib.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <alsa/asoundlib.h>
 #include <stdarg.h>
 #include <stdio.h>


@@ -9,294 +10,354 @@
 #include <unistd.h>
 #include <X11/Xlib.h>
 
 #include <unistd.h>
 #include <X11/Xlib.h>
 

+/* local libraries */

 #include "config.h"
 
 #include "config.h"
 

-char *smprintf(char *fmt, ...);
-
+/* functions */

 void setstatus(char *str);
 void setstatus(char *str);

-
-char *wifi_signal();

 char *battery();
 char *battery();

-char *cpu_usage();

 char *cpu_temperature();
 char *cpu_temperature();

+char *cpu_usage();
+char *datetime();

 char *ram_usage();
 char *ram_usage();

+char *smprintf(char *fmt, ...);

 char *volume();
 char *volume();

-char *datetime();
+char *wifi_signal();

 
 

+/* global variables */

 static Display *dpy;
 
 static Display *dpy;
 

-/* smprintf function */
+/* set statusbar (WM_NAME) */
+void
+setstatus(char *str)
+{
+  XStoreName(dpy, DefaultRootWindow(dpy), str);
+  XSync(dpy, False);
+}
+
+/* battery percentage */

 char *
 char *

-smprintf(char *fmt, ...)
+battery()

 {
 {

-       va_list fmtargs;
-       char *ret;
-       int len;
+  int battery_now, battery_full, battery_perc;
+  FILE *fp;

 
 

-       va_start(fmtargs, fmt);
-       len = vsnprintf(NULL, 0, fmt, fmtargs);
-       va_end(fmtargs);
+  /* open battery now file */
+  if (!(fp = fopen(batterynowfile, "r"))) {
+    fprintf(stderr, "Error opening battery file.");
+    exit(1);
+  }

 
 

-       ret = malloc(++len);
-       if (ret == NULL) {
-               fprintf(stderr, "Malloc error.");
-               exit(1);
-       }
+  /* read value */
+  fscanf(fp, "%i", &battery_now);

 
 

-       va_start(fmtargs, fmt);
-       vsnprintf(ret, len, fmt, fmtargs);
-       va_end(fmtargs);
+  /* close battery now file */
+  fclose(fp);

 
 

-       return ret;
-}
+  /* open battery full file */
+  if (!(fp = fopen(batteryfullfile, "r"))) {
+    fprintf(stderr, "Error opening battery file.");
+    exit(1);
+  }

 
 

-/* set statusbar (WM_NAME) */
-void
-setstatus(char *str)
-{
-       XStoreName(dpy, DefaultRootWindow(dpy), str);
-       XSync(dpy, False);
+  /* read value */
+  fscanf(fp, "%i", &battery_full);
+
+  /* close battery full file */
+  fclose(fp);
+
+  /* calculate percent */
+  battery_perc = battery_now / (battery_full / 100);
+
+  /* return batt_perc as string */
+  return smprintf("%d%%", battery_perc);

 }
 
 }
 

-/* alsa volume percentage */
+/* cpu temperature */

 char *
 char *

-volume()
+cpu_temperature()

 {
 {

-        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);
-        snd_mixer_selem_id_set_name(vol_info, channel);
-        snd_mixer_selem_id_set_name(mute_info, 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 "mute";
-        else
-            return smprintf("%d%%", (vol * 100) / max);
+  int temperature;
+  FILE *fp;
+
+  /* open temperature file */
+  if (!(fp = fopen(tempfile, "r"))) {
+    fprintf(stderr, "Could not open temperature file.\n");
+    exit(1);
+  }
+
+  /* extract temperature */
+  fscanf(fp, "%d", &temperature);
+
+  /* close temperature file */
+  fclose(fp);
+
+  /* return temperature in degrees */
+  return smprintf("%d°C", temperature / 1000);

 }
 
 }
 

-/* cpu temperature */
+/* cpu percentage */

 char *
 char *

-cpu_temperature()
+cpu_usage()

 {
 {

-    int temperature;
-    FILE *fp;
+  int cpu_perc;
+  long double a[4], b[4];
+  FILE *fp;

 
 

-    /* open temperature file */
-    if (!(fp = fopen(tempfile, "r"))) {
-        fprintf(stderr, "Could not open temperature file.\n");
-        exit(1);
-    }
+  /* open stat file */
+  if (!(fp = fopen("/proc/stat","r"))) {
+    fprintf(stderr, "Error opening stat file.");
+    exit(1);
+  }

 
 

-    /* extract temperature, close file */
-    fscanf(fp, "%d", &temperature);
-    fclose(fp);
+  /* read values */
+  fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);

 
 

-    /* return temperature in degrees */
-    return smprintf("%d°C", temperature / 1000);
+  /* close stat file */
+  fclose(fp);
+
+  /* wait a second (for avg values) */
+  sleep(1);
+
+  /* open stat file */
+  if (!(fp = fopen("/proc/stat","r"))) {
+    fprintf(stderr, "Error opening stat file.");
+    exit(1);
+  }
+
+  /* read values */
+  fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
+
+  /* close stat file */
+  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]));
+
+  /* return cpu_perc as string */
+  return smprintf("%d%%", cpu_perc);

 }
 
 }
 

-/* wifi percentage */
+/* date and time */

 char *
 char *

-wifi_signal()
+datetime()

 {
 {

-    int bufsize = 255;
-       int strength;
-       char buf[bufsize];
-       char *datastart;
-    char path_start[16] = "/sys/class/net/";
-    char path_end[11] = "/operstate";
-    char path[32];
-       FILE *fp;
-
-    /* generate the path name */
-    strcat(path, path_start);
-    strcat(path, wificard);
-    strcat(path, path_end);
-
-    /* open wifi file, extract status, close file */
-    if(!(fp = fopen(path, "r"))) {
-        fprintf(stderr, "Error opening wifi operstate file.");
-        exit(1);
-    }
-    char status[5];
-    fgets(status, 5, fp);
-    fclose(fp);
-
-    /* check if interface down */
-    if(strcmp(status, "up\n") != 0){
-        return "n/a";
-    }
-
-    /* open wifi file */
-    if (!(fp = fopen("/proc/net/wireless", "r"))) {
-        fprintf(stderr, "Error opening wireless file.");
-        exit(1);
-    }
-
-    /* extract the signal strength and close the file */
-       fgets(buf, bufsize, fp);
-       fgets(buf, bufsize, fp);
-       fgets(buf, bufsize, fp);
-       if ((datastart = strstr(buf, "wlp3s0:")) != NULL) {
-               datastart = strstr(buf, ":");
-               sscanf(datastart + 1, " %*d   %d  %*d  %*d        %*d      %*d      %*d      %*d      %*d        %*d",
-                  &strength);
-       }
-       fclose(fp);
-
-    /* return strength in percent */
-    return smprintf("%d%%", strength);
+  time_t tm;
+  size_t bufsize = 19;
+  char *buf = malloc(bufsize);
+
+  /* get time in format */
+  time(&tm);
+  if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
+    fprintf(stderr, "Strftime failed.\n");
+    exit(1);
+  }
+
+  /* return time */
+  return buf;

 }
 
 }
 

-/* battery percentage */
+/* ram percentage */

 char *
 char *

-battery()
+ram_usage()

 {
 {

-       int batt_now;
-    int batt_full;
-    int batt_perc;
-       FILE *fp;
-
-    /* open battery now file, extract and close */
-       if (!(fp = fopen(batterynowfile, "r"))) {
-        fprintf(stderr, "Error opening battery file.");
-        exit(1);
-    }
-       fscanf(fp, "%i", &batt_now);
-       fclose(fp);
-       
-    /* extract battery full file, extract and close */
-       if (!(fp = fopen(batteryfullfile, "r"))) {
-        fprintf(stderr, "Error opening battery file.");
-        exit(1);
-    }
-       fscanf(fp, "%i", &batt_full);
-       fclose(fp);
-
-    /* calculate percent */
-       batt_perc = batt_now / (batt_full / 100);
-
-    /* return percent */
-       return smprintf("%d%%", batt_perc);
+  int ram_perc;
+  long total, free, available;
+  FILE *fp;
+
+  /* open meminfo file */
+  if (!(fp = fopen("/proc/meminfo", "r"))) {
+    fprintf(stderr, "Error opening meminfo file.");
+    exit(1);
+  }
+
+  /* read the values */
+  fscanf(fp, "MemTotal: %ld kB\n", &total);
+  fscanf(fp, "MemFree: %ld kB\n", &free);
+  fscanf(fp, "MemAvailable: %ld kB\n", &available);
+
+  /* close meminfo file */
+  fclose(fp);
+
+  /* calculate percentage */
+  ram_perc = 100 * (total - available) / total;
+
+  /* return ram_perc as string */
+  return smprintf("%d%%",ram_perc);

 }
 
 }
 

-/* date and time */
+/* smprintf function */

 char *
 char *

-datetime()
+smprintf(char *fmt, ...)

 {
 {

-       time_t tm;
-       size_t bufsize = 19;
-       char *buf = malloc(bufsize);
-
-    /* get time in format */
-       time(&tm);
-       if(!strftime(buf, bufsize, timeformat, localtime(&tm))) {
-               fprintf(stderr, "Strftime failed.\n");
-               exit(1);
-       }
-
-    /* return time */
-       return buf;
+  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) {
+    fprintf(stderr, "Malloc error.");
+    exit(1);
+  }
+
+  va_start(fmtargs, fmt);
+  vsnprintf(ret, len, fmt, fmtargs);
+  va_end(fmtargs);
+
+  return ret;

 }
 
 }
 

-/* cpu percentage */
+/* alsa volume percentage */

 char *
 char *

-cpu_usage()
+volume()

 {
 {

-    FILE *fp;
-    long double a[4], b[4], cpu_perc;
-
-    /* open stat file, read and close, do same after 1 second */
-       if (!(fp = fopen("/proc/stat","r"))) {
-        fprintf(stderr, "Error opening stat file.");
-        exit(1);
-    }
-    fscanf(fp,"%*s %Lf %Lf %Lf %Lf",&a[0],&a[1],&a[2],&a[3]);
-    fclose(fp);
-    sleep(1);
-       if (!(fp = fopen("/proc/stat","r"))) {
-        fprintf(stderr, "Error opening stat file.");
-        exit(1);
-    }
-    fscanf(fp,"%*s %Lf %Lf %Lf %Lf",&b[0],&b[1],&b[2],&b[3]);
-    fclose(fp);
-
-    /* calculate average in 1 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]));
-
-    /* return avg cpu percentage */
-    return smprintf("%d%%", (int)cpu_perc);
+  int mute = 0;
+  long vol = 0, max = 0, min = 0;
+
+  /* get volume from alsa */
+  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);
+  snd_mixer_selem_id_set_name(vol_info, channel);
+  snd_mixer_selem_id_set_name(mute_info, 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);
+
+  /* return the string (mute) */
+  if (!mute)
+    return smprintf("mute");
+  else
+    return smprintf("%d%%", (vol * 100) / max);

 }
 
 }
 

-/* ram percentage */
+/* wifi percentage */

 char *
 char *

-ram_usage()
+wifi_signal()

 {
 {

-    FILE *fp;
-    long total, free, available;
-    int ram_perc;
-
-    /* read meminfo file, extract and close */
-       if (!(fp = fopen("/proc/meminfo", "r"))) {
-        fprintf(stderr, "Error opening meminfo file.");
-        exit(1);
-    }
-    fscanf(fp, "MemTotal: %ld kB\n", &total);
-    fscanf(fp, "MemFree: %ld kB\n", &free);
-    fscanf(fp, "MemAvailable: %ld kB\n", &available);
-    fclose(fp);
-
-    /* calculate percentage */
-    ram_perc = 100 * (total - available) / total;
-
-    /* return in percent */
-    return smprintf("%d%%",ram_perc);
+  int bufsize = 255;
+  int strength;
+  char buf[bufsize];
+  char *datastart;
+  char path_start[16] = "/sys/class/net/";
+  char path_end[11] = "/operstate";
+  char path[32];
+  char status[5];
+  char needle[sizeof wificard + 1];
+  FILE *fp;
+
+  /* generate the path name */
+
+  memset(path, 0, sizeof path);
+  strcat(path, path_start);
+  strcat(path, wificard);
+  strcat(path, path_end);
+
+  /* open wifi file */
+  if(!(fp = fopen(path, "r"))) {
+    fprintf(stderr, "Error opening wifi operstate file.");
+    exit(1);
+  }
+
+  /* read the status */
+  fgets(status, 5, fp);
+
+  /* close wifi file */
+  fclose(fp);
+
+  /* check if interface down */
+  if(strcmp(status, "up\n") != 0){
+    return "n/a";
+  }
+
+  /* open wifi file */
+  if (!(fp = fopen("/proc/net/wireless", "r"))) {
+    fprintf(stderr, "Error opening wireless file.");
+    exit(1);
+  }
+
+  /* extract the signal strength */
+  strcpy(needle, wificard);
+  strcat(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);
+  }
+
+  /* close wifi file */
+  fclose(fp);
+
+  /* return strength in percent */
+  return smprintf("%d%%", strength);

 }
 
 }
 

+/* main function */

 int
 main()
 {
 int
 main()
 {

-    char status[1024];
-
-    /* open display */
-    if (( dpy = XOpenDisplay(0x0)) == NULL ) {
-        fprintf(stderr, "Cannot open display!\n");
-        exit(1);
-    }
-
-    /* return status every second */   
-       for (;;) {
-               sprintf(status, FORMATSTRING, ARGUMENTS);
-               setstatus(status);
-       }
-
-    /* close display */
-    XCloseDisplay(dpy);
-
-    /* exit successfully */
-       return 0;
+  char status[1024];
+
+  /* open display */
+  if (!(dpy = XOpenDisplay(0x0))) {
+    fprintf(stderr, "Cannot open display!\n");
+    exit(1);
+  }
+
+  char *pWifi_signal = NULL;
+  char *pBattery = NULL;
+  char *pCpu_usage = NULL;
+  char *pCpu_temperature = NULL;
+  char *pRam_usage = NULL;
+  char *pVolume = NULL;
+  char *pDatetime = NULL;
+
+  /* return status every second */
+  for (;;) {
+    pWifi_signal = wifi_signal();
+    pBattery = battery();
+    pCpu_usage = cpu_usage();
+    pCpu_temperature = cpu_temperature();
+    pRam_usage = ram_usage();
+    pVolume = volume();
+    pDatetime = datetime();
+    sprintf(status, FORMATSTRING, ARGUMENTS);
+    setstatus(status);
+    free(pWifi_signal);
+    free(pBattery);
+    free(pCpu_usage);
+    free(pCpu_temperature);
+    free(pRam_usage);
+    free(pVolume);
+    free(pDatetime);
+  }
+
+  /* close display */
+  XCloseDisplay(dpy);
+
+  /* exit successfully */
+  return 0;

 }
 }