vpnc-script-win.js

   1 // vpnc-script-win.js
   2 //
   3 // Sets up the Network interface and the routes
   4 // needed by vpnc.
   5
   6 // --------------------------------------------------------------
   7 // Utilities
   8 // --------------------------------------------------------------
   9
  10 function echo(msg)
  11 {
  12         WScript.echo(msg);
  13 }
  14
  15 function run(cmd)
  16 {
  17         return (ws.Exec(cmd).StdOut.ReadAll());
  18 }
  19
  20 function getDefaultGateway()
  21 {
  22         if (run("route print").match(/Default Gateway: *(.*)/)) {
  23                 return (RegExp.$1);
  24         }
  25         return ("");
  26 }
  27
  28 // --------------------------------------------------------------
  29 // Script starts here
  30 // --------------------------------------------------------------
  31
  32 var internal_ip4_netmask = "255.255.255.0"
  33
  34 var ws = WScript.CreateObject("WScript.Shell");
  35 var env = ws.Environment("Process");
  36
  37 switch (env("reason")) {
  38 case "pre-init":
  39         break;
  40 case "connect":
  41         var gw = getDefaultGateway();
  42         echo("VPN Gateway: " + env("VPNGATEWAY"));
  43         echo("Internal Address: " + env("INTERNAL_IP4_ADDRESS"));
  44         echo("Internal Netmask: " + env("INTERNAL_IP4_NETMASK"));
  45         echo("Interface: \"" + env("TUNDEV") + "\"");
  46
  47         if (env("INTERNAL_IP4_NETMASK")) {
  48             internal_ip4_netmask = env("INTERNAL_IP4_NETMASK");
  49         }
  50
  51         echo("Configuring \"" + env("TUNDEV") + "\" interface...");
  52         run("netsh interface ip set address \"" + env("TUNDEV") + "\" static " +
  53             env("INTERNAL_IP4_ADDRESS") + " " + internal_ip4_netmask);
  54
  55         // Add direct route for the VPN gateway to avoid routing loops
  56         run("route add " + env("VPNGATEWAY") +
  57             " mask 255.255.255.255 " + gw);
  58
  59         if (env("INTERNAL_IP4_NBNS")) {
  60                 var wins = env("INTERNAL_IP4_NBNS").split(/ /);
  61                 for (var i = 0; i < wins.length; i++) {
  62                         run("netsh interface ip add wins \"" +
  63                             env("TUNDEV") + "\" " + wins[i]
  64                             + " index=" + (i+1));
  65                 }
  66         }
  67
  68         if (env("INTERNAL_IP4_DNS")) {
  69                 var dns = env("INTERNAL_IP4_DNS").split(/ /);
  70                 for (var i = 0; i < dns.length; i++) {
  71                         run("netsh interface ip add dns \"" +
  72                             env("TUNDEV") + "\" " + dns[i]
  73                             + " index=" + (i+1));
  74                 }
  75         }
  76         echo("done.");
  77
  78         // Add internal network routes
  79         echo("Configuring networks:");
  80         if (env("CISCO_SPLIT_INC")) {
  81                 for (var i = 0 ; i < parseInt(env("CISCO_SPLIT_INC")); i++) {
  82                         var network = env("CISCO_SPLIT_INC_" + i + "_ADDR");
  83                         var netmask = env("CISCO_SPLIT_INC_" + i + "_MASK");
  84                         var netmasklen = env("CISCO_SPLIT_INC_" + i +
  85                                          "_MASKLEN");
  86                         run("route add " + network + " mask " + netmask +
  87                              " " + env("INTERNAL_IP4_ADDRESS"));
  88                 }
  89         } else {
  90                 echo("Gateway did not provide network configuration.");
  91         }
  92         echo("Route configuration done.");
  93
  94         if (env("CISCO_BANNER")) {
  95                 echo("--------------------------------------------------");
  96                 echo(env("CISCO_BANNER"));
  97                 echo("--------------------------------------------------");
  98         }
  99         break;
 100 case "disconnect":
 101         // Delete direct route for the VPN gateway to avoid
 102         run("route delete " + env("VPNGATEWAY") + " mask 255.255.255.255");
 103 }
 104