src/scripts/vpn-watch

   1 #!/usr/bin/perl
   2 ##################################################
   3 #####     VPN-Watch.pl     Version 0.4       #####
   4 ##################################################
   5 #                                                #
   6 #   VPN-Watch is part of the IPFire Firewall     #
   7 #                                                #
   8 ##################################################
   9
  10 use strict;
  11
  12 require '/var/ipfire/general-functions.pl';
  13 my @vpnsettings;
  14 my $i = 0;
  15 my $file = "/var/run/vpn-watch.pid";
  16 my $debug = 0;
  17
  18 if ( -e $file ){
  19   logger("There my be another vpn-watch runnning because $file exists, vpn-watch will try kill the process.");
  20   open(FILE, "<$file");
  21     my $PID = <FILE>;
  22     close(FILE);
  23     system("kill -9 $PID");
  24   }
  25 if ($debug){logger("Call of vpn-watch pid not is not existing.");}
  26
  27 system("echo $$ > $file");
  28
  29 while ( $i == 0){
  30  sleep(300);
  31   if ($debug){logger("We will wait 300 seconds before next action.");}
  32
  33   if (open(FILE, "<${General::swroot}/vpn/config")) {
  34     @vpnsettings = <FILE>;
  35     close(FILE);
  36     unless(@vpnsettings) {exit 1;}
  37   }
  38
  39 foreach (@vpnsettings){
  40  my @settings = split(/,/,$_);
  41
  42   if ($settings[27] ne 'RED'){next;}
  43   if ($settings[4] ne 'net'){next;}
  44   if ($settings[1] ne 'on'){next;}chomp($settings[29]);
  45   if ($settings[29] ne 'on'){next;}
  46
  47   my $remotehostname = $settings[11];
  48
  49   if ($debug){logger("Checking connection to $remotehostname.");}
  50
  51   my $remoteip = `/usr/bin/ping -c 1 $remotehostname 2>/dev/null | head -n1 | awk '{print \$3}' | tr -d '()' | tr -d ':'`;chomp($remoteip);
  52   if ($remoteip eq ""){next;if ($debug){logger("Unable to resolve $remotehostname.");}}
  53   my $connected=system("ipsec whack --status | grep $remoteip >/dev/null");
  54   my $established=system("ipsec whack --status | grep '$settings[1]' | grep 'ISAKMP SA established' >/dev/null");
  55
  56   if ( $established  eq "" || $connected eq "" ){
  57     logger("Remote IP for host $remotehostname has changed or no connection is established, restarting connection to $remoteip.");
  58     system("/usr/local/bin/ipsecctrl S $settings[0]");
  59     next;
  60   }
  61  if ($debug){logger("All connections may be fine nothing was done.");}
  62  }
  63 }
  64
  65 sub logger {
  66         my $log = shift;
  67         system("logger -t vpnwatch \"$log\"");
  68 }
  69