159 lines
3.8 KiB
Perl
159 lines
3.8 KiB
Perl
#! /usr/bin/perl -w
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#
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# Device configuration script for tinc
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# $Id: tinc-up,v 1.1.2.1 2000/11/24 16:52:57 zarq Exp $
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#
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# Based on Lubomir Bulej's Redhat init script.
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#
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# This file is called after the tap device is opened by tinc. The
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# environment variable IFNAME contains the name of the device; NETNAME
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# contains the name of the network that was started.
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my $IFNAME=$ENV{"IFNAME"};
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my $NETNAME=$ENV{"NETNAME"};
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##############################################################################
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# vpn_load () Loads VPN configuration
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#
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# $_[0] ... VPN to load
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sub vpn_load {
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my @addr;
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$CFG="$TCONF/$_[0]/tinc.conf";
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if(! open($CFG, "< $CFG")) {
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warn "tinc: $CFG does not exist\n";
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return 0;
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}
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# load TINCD config
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while(<$CFG>) {
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if( /^[ ]*TapDevice[ =]+([^ \#]+)/i ) {
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$DEV=$1;
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chomp($DEV);
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$DEV =~ s/^.*\/([^\/0-9]+)([0-9]+)$/$1$2/;
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$NUM = $2;
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} elsif ( /^[ ]*(MyOwnVPNIP|MyVirtualIP)[ =]+([^ \#]+)/i ) {
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$VPN=$2;
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chomp($VPN);
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} elsif ( /^[ ]*VpnMask[ =]+([^ \#]+)/i ) {
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$VPNMASK=$1;
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chomp($VPNMASK);
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}
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}
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if(!defined($DEV)) {
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warn "tinc: There must be a TapDevice\n";
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return 0;
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}
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if($DEV eq "") {
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warn "tinc: TapDevice should be of the form /dev/tapN\n";
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return 0;
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}
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if(!defined($VPN)) {
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warn "tinc: MyVirtualIP required\n";
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return 0;
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}
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if($VPN eq "") {
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warn "tinc: No argument to MyVirtualIP/MyOwnVPNIP\n";
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return 0;
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}
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if(defined($VPNMASK) && $VPNMASK eq "") {
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warn "tinc: Invalid argument to VpnMask\n";
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return 0;
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}
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$ADR = $VPN;
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$ADR =~ s/^([^\/]+)\/.*$/$1/;
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$LEN = $VPN;
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$LEN =~ s/^.*\/([^\/]+)$/$1/;
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if($ADR eq "" || $LEN eq "") {
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warn "tinc: Badly formed MyVirtualIP/MyOwnVPNIP\n";
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return 0;
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}
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@addr = split(/\./, $ADR);
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$ADR = pack('C4', @addr);
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$MSK = pack('N4', -1 << (32 - $LEN));
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$BRD = join(".", unpack('C4', $ADR | ~$MSK));
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$MAC = "fe:fd:" . join(":", map { sprintf "%02x", $_ } unpack('C4', $ADR));
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if(!defined($VPNMASK)) {
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$VPNMASK = $MSK;
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$VPNMASK = join(".", unpack('C4', $VPNMASK));
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}
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$ADR = join(".", unpack('C4', $ADR));
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$MSK = join(".", unpack('C4', $MSK));
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1;
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}
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##############################################################################
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# vpn_start () starts specified VPN
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#
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# $_[0] ... VPN to start
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sub vpn_start {
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vpn_load($_[0]) || return 0;
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system("insmod ethertap -s --name=\"ethertap$NUM\" unit=\"$NUM\" >/dev/null");
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system("ifconfig $DEV hw ether $MAC");
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system("ifconfig $DEV $ADR netmask $VPNMASK broadcast $BRD mtu 1448 -arp");
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system("start-stop-daemon --start --quiet --pidfile /var/run/$NAME.$_[0].pid --exec $DAEMON -- -n $_[0] $EXTRA");
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}
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##############################################################################
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# vpn_stop () Stops specified VPN
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#
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# $_[0] ... VPN to stop
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sub vpn_stop {
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vpn_load($_[0]) || return 1;
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system("start-stop-daemon --stop --quiet --pidfile /var/run/$NAME.$_[0].pid --exec $DAEMON -- -n $_[0] $EXTRA -k");
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system("ifconfig $DEV down");
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system("rmmod ethertap$NUM -s");
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}
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if(!defined($ARGV[0])) {
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die "Usage: /etc/init.d/$NAME {start|stop|restart|force-reload}\n";
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}
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if($ARGV[0] eq "start") {
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find_nets;
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print "Starting $DESC:";
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foreach $n (@NETS) {
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print " $n";
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vpn_start($n);
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}
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print ".\n";
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} elsif ($ARGV[0] eq "stop") {
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find_nets;
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print "Stopping $DESC:";
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foreach $n (@NETS) {
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print " $n";
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vpn_stop($n);
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}
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print ".\n";
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} elsif ($ARGV[0] eq "restart" || $ARGV[0] eq "force-reload") {
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find_nets;
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print "Stopping $DESC:";
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foreach $n (@NETS) {
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print " $n";
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vpn_stop($n);
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}
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print ".\n";
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print "Starting $DESC:";
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foreach $n (@NETS) {
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print " $n";
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vpn_start($n);
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}
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print ".\n";
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} else {
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die "Usage: /etc/init.d/$NAME {start|stop|restart|force-reload}\n";
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}
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