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[people/pmueller/ipfire-2.x.git] / src / scripts / vpn-watch

#!/usr/bin/perl 
################################################## 
#####     VPN-Watch.pl     Version 0.3       ##### 
################################################## 

use strict;

require '/var/ipfire/general-functions.pl';
my @vpnsettings;
my $i = 0;
my $file = "/var/run/vpn-watch.pid";
my $debug = 0;

if ( -e $file ){
  logger("There my be another vpn-watch runnning because $file exists, vpn-watch will try kill the process.");
  open(FILE, "<$file");
    my $PID = <FILE>;
    close(FILE);
    system("kill -9 $PID");
  }
if ($debug){logger("Call of vpn-watch pid not is not existing.");}

system("echo $$ > $file");
    
while ( $i == 0){
 sleep(300);
  if ($debug){logger("We will wait 300 seconds before next action.");}
  
  if (open(FILE, "<${General::swroot}/vpn/config")) {
    @vpnsettings = <FILE>;
    close(FILE);
    unless(@vpnsettings) {exit 1;}
  }

foreach (@vpnsettings){
 my @settings = split(/,/,$_);

  if ($settings[27] ne 'RED'){next;}
  if ($settings[4] ne 'net'){next;}  
  if ($settings[1] ne 'on'){next;}chomp($settings[29]);
  if ($settings[29] ne 'on'){next;}
 
  my $remotehostname = $settings[11];
  
  if ($debug){logger("Checking connection to $remotehostname.");}
  
  my $remoteip = `/usr/bin/ping -c 1 $remotehostname 2>/dev/null | head -n1 | awk '{print \$3}' | tr -d '()' | tr -d ':'`;chomp($remoteip);
  if ($remoteip eq ""){next;}
  if (system("ipsec whack --status | grep $remoteip >/dev/null")){
    logger("Remote IP for host $remotehostname has changed or is not connected, restarting connection to $remoteip.");
    system("/usr/local/bin/ipsecctrl S $settings[0]");
    next;
  }
 if ($debug){logger("All connections may be fine nothing was done.");}
 }
}

sub logger {
        my $log = shift;
        system("logger -t vpnwatch \"$log\"");
}