src/scripts/vpn-watch

   1 #!/usr/bin/perl
   2 ##################################################
   3 #####     VPN-Watch.pl     Version 0.6a      #####
   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
  26 system("echo $$ > $file");
  27 my $round=0;
  28 while ( $i == 0){
  29   if ($debug){logger("We will wait 60 seconds before next action.");}
  30     sleep(60);
  31
  32   $round++;
  33
  34    # Reset roundcounter after 60 min. To do established check.
  35   if ($round > 59) { $round=0; }
  36
  37   if (open(FILE, "<${General::swroot}/vpn/config")) {    @vpnsettings = <FILE>;
  38     close(FILE);
  39     unless(@vpnsettings) {exit 1;}
  40   }
  41
  42 my $status = `ipsec whack --status`;
  43 foreach (@vpnsettings){
  44  my @settings = split(/,/,$_);
  45
  46   if ($settings[27] ne 'RED'){next;}
  47   if ($settings[4] ne 'net'){next;}
  48   if ($settings[1] ne 'on'){next;}chomp($settings[29]);
  49   if ($settings[29] ne 'on'){next;}
  50
  51   my $remotehostname = $settings[11];
  52
  53   if ($debug){logger("Checking connection to $remotehostname.");}
  54
  55   my $remoteip = `/usr/bin/ping -c 1 $remotehostname 2>/dev/null | head -n1 | awk '{print \$3}' | tr -d '()' | tr -d ':'`;chomp($remoteip);
  56   if ($remoteip eq ""){next;if ($debug){logger("Unable to resolve $remotehostname.");}}
  57   my $ipmatch= `echo "$status" | grep '$remoteip' | grep '$settings[2]'`;
  58   my $established= `echo "$status" | grep '$settings[2]' | grep 'erouted;'`;
  59   my $known= `echo "$status" | grep '$settings[2]'`;
  60
  61   if ( $ipmatch eq '' && $known ne '' ){
  62     logger("Remote IP for host $remotehostname($remoteip) has changed, restarting ipsec.");
  63     system("/usr/local/bin/ipsecctrl S $settings[0]");
  64     $round=0;
  65     last; #all connections will reloaded
  66           #remove this if ipsecctrl can restart single con again
  67   }
  68
  69   if ($debug){logger("Round=".$round." and established=".$established);}
  70
  71   if ( ($round == 0) && ($established eq '')) {
  72     logger("Connection to $remotehostname($remoteip) not erouted, restarting ipsec.");
  73     system("/usr/local/bin/ipsecctrl S $settings[0]");
  74     $round=0;
  75     last; #all connections will reloaded
  76           #remove this if ipsecctrl can restart single con again
  77
  78   }
  79  }
  80  if ($debug){logger("All connections may be fine nothing was done.");}
  81 }
  82
  83 sub logger {
  84         my $log = shift;
  85         system("logger -t vpnwatch \"$log\"");
  86 }