vpn-watch: restart ipsec only if ip's has changed.
[people/pmueller/ipfire-2.x.git] / src / scripts / vpn-watch
CommitLineData
dced81b2 1#!/usr/bin/perl
0edf2f61 2##################################################
64bd20c5 3##### VPN-Watch.pl Version 0.4c #####
0edf2f61
CS
4##################################################
5# #
6# VPN-Watch is part of the IPFire Firewall #
7# #
8##################################################
c6c9630e 9
dced81b2 10use strict;
c6c9630e 11
dced81b2
CS
12require '/var/ipfire/general-functions.pl';
13my @vpnsettings;
14my $i = 0;
15my $file = "/var/run/vpn-watch.pid";
ad60e3ea
CS
16my $debug = 0;
17
a2d5130f
CS
18if ( -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 }
c6c9630e 25
dced81b2 26system("echo $$ > $file");
c6c9630e 27
dced81b2 28while ( $i == 0){
64bd20c5
AF
29 if ($debug){logger("We will wait 60 seconds before next action.");}
30 sleep(60);
ad60e3ea 31
a2d5130f 32 if (open(FILE, "<${General::swroot}/vpn/config")) {
dced81b2
CS
33 @vpnsettings = <FILE>;
34 close(FILE);
35 unless(@vpnsettings) {exit 1;}
36 }
37
64bd20c5 38my $status = `ipsec whack --status`;
dced81b2
CS
39foreach (@vpnsettings){
40 my @settings = split(/,/,$_);
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 = $settings[11];
ad60e3ea
CS
48
49 if ($debug){logger("Checking connection to $remotehostname.");}
50
dced81b2 51 my $remoteip = `/usr/bin/ping -c 1 $remotehostname 2>/dev/null | head -n1 | awk '{print \$3}' | tr -d '()' | tr -d ':'`;chomp($remoteip);
0edf2f61 52 if ($remoteip eq ""){next;if ($debug){logger("Unable to resolve $remotehostname.");}}
64bd20c5 53 my $ipmatch= `echo "$status" | grep $remoteip | grep $settings[2]`;
0edf2f61 54
64bd20c5
AF
55 if ( $ipmatch eq '' ){
56 logger("Remote IP for host $remotehostname-$remoteip has changed, restarting ipsec.");
fac78664 57 system("/usr/local/bin/ipsecctrl S");
98ccaf67 58 last; #all connections will reloaded
dced81b2 59 }
ad60e3ea 60 }
af0e9924 61 if ($debug){logger("All connections may be fine nothing was done.");}
dced81b2
CS
62}
63
64sub logger {
65 my $log = shift;
66 system("logger -t vpnwatch \"$log\"");
67}
0edf2f61 68