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1 | #!/usr/bin/perl | |
2 | ################################################## | |
3 | ##### VPN-Watch.pl Version 0.5 ##### | |
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 | $round++; | |
33 | ||
34 | # Reset roundcounter after 10 min. To do established check. | |
35 | if ($round > 9) { $round=0 } | |
36 | ||
37 | if (open(FILE, "<${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 | ||
60 | if ( $ipmatch eq '' ){ | |
61 | logger("Remote IP for host $remotehostname($remoteip) has changed, restarting ipsec."); | |
62 | system("/usr/local/bin/ipsecctrl S $settings[0]"); | |
63 | last; #all connections will reloaded | |
64 | #remove this if ipsecctrl can restart single con again | |
65 | } | |
66 | if ( ($round = 0) && ($established eq '')) { | |
67 | logger("Connection to $remotehostname($remoteip) not erouted, restarting ipsec."); | |
68 | system("/usr/local/bin/ipsecctrl S $settings[0]"); | |
69 | last; #all connections will reloaded | |
70 | #remove this if ipsecctrl can restart single con again | |
71 | ||
72 | } | |
73 | } | |
74 | if ($debug){logger("All connections may be fine nothing was done.");} | |
75 | } | |
76 | ||
77 | sub logger { | |
78 | my $log = shift; | |
79 | system("logger -t vpnwatch \"$log\""); | |
80 | } |