statuses/netif.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <string.h>
   5 #include "netif.h"
   6 #include "tools.h"
   7 #include "../config.h"
   8
   9 #ifndef NETIF_BASEDIR
  10         #define NETIF_BASEDIR "/sys/class/net/"
  11 #endif
  12
  13
  14 void status_netif(char *ifname)
  15 {
  16         char ifpath[256];
  17         int ifpathlen;
  18
  19         char stline[16];
  20         ssize_t stlen;
  21
  22         double ifsum = 0.0;
  23         int ifsumpower;
  24
  25
  26         // Prepare path
  27         ifpathlen = sizeof(NETIF_BASEDIR) - 1 + strlen(ifname);
  28         if (ifpathlen + 1 + sizeof("/statistics/rx_bytes") >= sizeof(ifpath))
  29         {
  30                 statusError("status_netif",
  31                         "ifpath buffer too small",
  32                         ifname);
  33                 return;
  34         }
  35         strcpy(ifpath, NETIF_BASEDIR);
  36         strcat(ifpath, ifname);
  37
  38
  39         // Is the interface up?
  40         if (access(ifpath, F_OK))
  41         {
  42                 //printf(" ^fg(grey)[%s] ", ifname);
  43                 return;
  44         }
  45
  46
  47         strcpy(&ifpath[ifpathlen], "/carrier");
  48         stlen = fileRead(stline, sizeof(stline), ifpath);
  49         if (stlen > 0)
  50         {
  51                 if (stline[0] == '1')
  52                 {
  53                         fputs("^fg(yellow)", stdout);
  54                 }
  55                 else
  56                 {
  57                         //fputs("^fg(red)", stdout);
  58                         return;
  59                 }
  60         }
  61
  62         strcpy(&ifpath[ifpathlen], "/statistics/rx_bytes");
  63         stlen = fileRead(stline, sizeof(stline), ifpath);
  64         if (stlen > 0)
  65                 ifsum = atof(stline);
  66
  67         strcpy(&ifpath[ifpathlen], "/statistics/tx_bytes");
  68         stlen = fileRead(stline, sizeof(stline), ifpath);
  69         if (stlen > 0)
  70                 ifsum += atof(stline);
  71
  72
  73         for(ifsumpower = 0; ifsum >= 1024.0; ifsumpower++)
  74                 ifsum = ifsum / 1024;
  75
  76         printf(" %s: %.*f %c ", ifname,
  77                                 ifsumpower ? ifsumpower - 1 : ifsumpower,
  78                                 ifsum,
  79                                 powerToChar(ifsumpower));
  80 }