release/src/router/rc/bwclimon.c

   1 #include "rc.h"
   2
   3 void start_bwclimon(void) {
   4
   5         char *nvp, *nv, *b;
   6         const char *ipaddr, *hostname;
   7
   8         nvp = nv = strdup(nvram_safe_get("bwm_client"));
   9         if (!nv) return;
  10
  11 // clear rules first
  12         stop_bwclimon();
  13
  14         eval("iptables", "-N", "traffic_in");
  15         eval("iptables", "-N", "traffic_out");
  16         eval("iptables", "-I", "FORWARD", "1", "-j", "traffic_in");
  17         eval("iptables", "-I", "FORWARD", "2", "-j", "traffic_out");
  18
  19         while ((b = strsep(&nvp, ">")) != NULL) {
  20                 /*
  21                         ip.ad.dr.ess<hostname>other.ip.addr.ess<anotherhost>
  22                         currently, only the IP address is used
  23                 */
  24                 if ((vstrsep(b, "<", &ipaddr, &hostname)) != 2) continue;
  25
  26                 eval("iptables", "-A", "traffic_in",  "-d", (char *)ipaddr);
  27                 eval("iptables", "-A", "traffic_out", "-s", (char *)ipaddr);
  28         }
  29         free(nv);
  30 }
  31
  32 void stop_bwclimon(void) {
  33
  34         eval("iptables", "-D", "FORWARD", "-j", "traffic_in");
  35         eval("iptables", "-D", "FORWARD", "-j", "traffic_out");
  36
  37         eval("iptables", "-F", "traffic_in");
  38         eval("iptables", "-F", "traffic_out");
  39
  40         eval("iptables", "-X", "traffic_in");
  41         eval("iptables", "-X", "traffic_out");
  42 }
  43