src/scripts/vpn-watch

   1 #!/usr/bin/perl
   2 ##################################################
   3 #####     VPN-Watch.pl     Version 0.7       #####
   4 ##################################################
   5 #                                                #
   6 #   VPN-Watch is part of the IPFire Firewall     #
   7 #                                                #
   8 ##################################################
   9
  10 # XXX The vpn-watch daemon is disabled, because
  11 # apparently, it is not needed anymore after
  12 # strongswan has abandoned pluto.
  13 exit(0);
  14
  15 use strict;
  16
  17 require '/var/ipfire/general-functions.pl';
  18 my @vpnsettings;
  19 my $i = 0;
  20 my $file = "/var/run/vpn-watch.pid";
  21 my $debug = 0;
  22
  23 if ( -e $file ){
  24   logger("There my be another vpn-watch runnning because $file exists, vpn-watch will try kill the process.");
  25   open(FILE, "<$file");
  26     my $PID = <FILE>;
  27     close(FILE);
  28     system("kill -9 $PID");
  29   }
  30
  31 system("echo $$ > $file");
  32 my $round=0;
  33 while ( $i == 0){
  34   if ($debug){logger("We will wait 60 seconds before next action.");}
  35     sleep(60);
  36
  37   $round++;
  38
  39    # Reset roundcounter after 10 min. To do established check.
  40   if ($round > 9) { $round=0; }
  41
  42   if (open(FILE, "<${General::swroot}/vpn/config")) {    @vpnsettings = <FILE>;
  43     close(FILE);
  44     unless(@vpnsettings) {exit 1;}
  45   }
  46
  47 my $status = `ipsec status`;
  48 foreach (@vpnsettings){
  49  my @settings = split(/,/,$_);
  50
  51   chomp($settings[30]);
  52   if ($settings[27] ne 'RED'){next;}
  53   if ($settings[4] ne 'net'){next;}
  54   if ($settings[1] ne 'on'){next;}chomp($settings[29]);
  55   if ($settings[29] ne 'on'){next;}
  56
  57   my $remotehostname = $settings[11];
  58
  59   if ($debug){logger("Checking connection to $remotehostname.");}
  60
  61   my $remoteip = `/usr/bin/ping -c 1 $remotehostname 2>/dev/null | head -n1 | awk '{print \$3}' | tr -d '()' | tr -d ':'`;chomp($remoteip);
  62   if ($remoteip eq ""){next;if ($debug){logger("Unable to resolve $remotehostname.");}}
  63   my $ipmatch= `echo "$status" | grep '$remoteip' | grep '$settings[2]'`;
  64   my $established= `echo "$status" | grep '$settings[2]' | grep -e 'erouted;' -e 'INSTALLED'`;
  65   my $known= `echo "$status" | grep '$settings[2]'`;
  66
  67   if ( $ipmatch eq '' && $known ne '' ){
  68     logger("Remote IP for host $remotehostname($remoteip) has changed, restarting ipsec.");
  69     system("/usr/local/bin/ipsecctrl S $settings[0]");
  70     $round=0;
  71   }
  72
  73   if ($debug){logger("Round=".$round." and established=".$established);}
  74
  75   if ( ($round == 0) && ($established eq '')) {
  76     logger("Connection to $remotehostname($remoteip) not erouted, restarting ipsec.");
  77     system("/usr/local/bin/ipsecctrl S $settings[0]");
  78     $round=0;
  79
  80   }
  81  }
  82  if ($debug){logger("All connections may be fine nothing was done.");}
  83 }
  84
  85 sub logger {
  86         my $log = shift;
  87         system("logger -t vpnwatch \"$log\"");
  88 }