admin/zabbix/files/zabbix_helper_mac80211.c

   1 #define _GNU_SOURCE
   2 #include <stdio.h>
   3 #include <string.h>
   4 #include <stdlib.h>
   5 #include <sys/types.h>
   6 #include <dirent.h>
   7 #include <stdbool.h>
   8
   9 int discovery()
  10 {
  11     DIR *dir;
  12     struct dirent *ent;
  13     bool comma = false;
  14     if ((dir = opendir ("/sys/kernel/debug/ieee80211/")) != NULL) {
  15         printf("{\"data\":[");
  16         while ((ent = readdir (dir)) != NULL) {
  17             if (strcmp(".", ent->d_name) && strcmp("..", ent->d_name)) {
  18                 if (comma)
  19                     printf(",");
  20                 printf("{\"{#PHY}\":\"%s\"}", ent->d_name);
  21                 comma = true;
  22             }
  23         }
  24         printf("]}\n");
  25         closedir(dir);
  26     } else {
  27         perror("");
  28         return EXIT_FAILURE;
  29     }
  30     return EXIT_SUCCESS;
  31 }
  32
  33 int get_param(char *phy, char *stat)
  34 {
  35     char *filename = NULL;
  36     FILE *f = NULL;
  37     phy = basename(phy);
  38     stat = basename(stat);
  39     if (asprintf(&filename, "/sys/kernel/debug/ieee80211/%s/statistics/%s", phy, stat) > 0)
  40         f = fopen(filename, "r");
  41
  42     if (f != NULL) {
  43         char temp[256];
  44         while (fgets(temp, 256, f) != NULL)
  45             printf("%s",temp);
  46
  47         fclose(f);
  48     } else {
  49         perror("");
  50         return EXIT_FAILURE;
  51     }
  52     free(filename);
  53     return EXIT_SUCCESS;
  54 }
  55
  56 int usage(char *name)
  57 {
  58     fprintf(stderr, "Usage:\n");
  59     fprintf(stderr, " %s discovery\n", name);
  60     fprintf(stderr, " => print mac80211.phydiscovery discovery rule\n");
  61     fprintf(stderr, " %s PHY STAT\n", name);
  62     fprintf(stderr, " => cat /sys/kernel/debug/ieee80211/PHY/statistics/STAT as root\n");
  63     return EXIT_FAILURE;
  64 }
  65
  66 int main(int argc, char *argv[])
  67 {
  68
  69     switch (argc) {
  70     case 2:
  71         return discovery();
  72     case 3:
  73         return get_param(argv[1], argv[2]);
  74     default:
  75         return usage(argv[0]);
  76     }
  77 }