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 ($settings[30] eq 'ikev2'){next;}
  47   if ($settings[27] ne 'RED'){next;}
  48   if ($settings[4] ne 'net'){next;}
  49   if ($settings[1] ne 'on'){next;}chomp($settings[29]);
  50   if ($settings[29] ne 'on'){next;}
  51
  52   my $remotehostname = $settings[11];
  53
  54   if ($debug){logger("Checking connection to $remotehostname.");}
  55
  56   my $remoteip = `/usr/bin/ping -c 1 $remotehostname 2>/dev/null | head -n1 | awk '{print \$3}' | tr -d '()' | tr -d ':'`;chomp($remoteip);
  57   if ($remoteip eq ""){next;if ($debug){logger("Unable to resolve $remotehostname.");}}
  58   my $ipmatch= `echo "$status" | grep '$remoteip' | grep '$settings[2]'`;
  59   my $established= `echo "$status" | grep '$settings[2]' | grep 'erouted;'`;
  60   my $known= `echo "$status" | grep '$settings[2]'`;
  61
  62   if ( $ipmatch eq '' && $known ne '' ){
  63     logger("Remote IP for host $remotehostname($remoteip) has changed, restarting ipsec.");
  64     system("/usr/local/bin/ipsecctrl S $settings[0]");
  65     $round=0;
  66     last; #all connections will reloaded
  67           #remove this if ipsecctrl can restart single con again
  68   }
  69
  70   if ($debug){logger("Round=".$round." and established=".$established);}
  71
  72   if ( ($round == 0) && ($established eq '')) {
  73     logger("Connection to $remotehostname($remoteip) not erouted, restarting ipsec.");
  74     system("/usr/local/bin/ipsecctrl S $settings[0]");
  75     $round=0;
  76     last; #all connections will reloaded
  77           #remove this if ipsecctrl can restart single con again
  78
  79   }
  80  }
  81  if ($debug){logger("All connections may be fine nothing was done.");}
  82 }
  83
  84 sub logger {
  85         my $log = shift;
  86         system("logger -t vpnwatch \"$log\"");
  87 }