+
+my $DAEMON="/usr/sbin/tincd";
+my $NAME="tinc";
+my $DESC="tinc daemons";
+my $TCONF="/etc/tinc";
+my $EXTRA="";
+
+# $NETS is a space seperated list of all tinc networks.
+my $NETS="";
+
+if ("$NETS" eq "") { print "No tinc networks configured."; exit 0; }
+
+if (! -f $DAEMON) { exit 0; }
+
+##############################################################################
+# vpn_load () Loads VPN configuration
+#
+# $_[0] ... VPN to load
+
+
+sub vpn_load {
+ my @addr;
+ $CFG="$TCONF/$_[0]/tinc.conf";
+ open($CFG, "< $CFG") || die "tinc: $CFG does not exist";
+
+ # load TINCD config
+ while(<$CFG>) {
+ if( /^[ ]*TapDevice[ =]+([^ \#]+)/i ) {
+ $DEV=$1;
+ chomp($DEV);
+ $DEV =~ s/^.*\/([^\/0-9]+)([0-9]+)$/$1$2/;
+ $NUM = $2;
+ } elsif ( /^[ ]*(MyOwnVPNIP|MyVirtualIP)[ =]+([^ \#]+)/i ) {
+ $VPN=$2;
+ chomp($VPN);
+ }
+ }
+ if(!defined($DEV)) {
+ die "tinc: There must be a TapDevice";
+ }
+ if($DEV eq "") {
+ die "tinc: TapDevice should be of the form /dev/tapN";
+ }
+ if(!defined($VPN)) {
+ die "tinc: MyVirtualIP required";
+ }
+ if($VPN eq "") {
+ die "tinc: No argument to MyVirtualIP/MyOwnVPNIP";
+ }
+ $ADR = $VPN;
+ $ADR =~ s/^([^\/]+)\/.*$/$1/;
+ $LEN = $VPN;
+ $LEN =~ s/^.*\/([^\/]+)$/$1/;
+ if($ADR eq "" || $LEN eq "") {
+ die "tinc: Badly formed MyVirtualIP/MyOwnVPNIP";
+ }
+ @addr = split(/\./, $ADR);
+
+ $ADR = pack('C4', @addr);
+ $MSK = pack('N4', -1 << (32 - $LEN));
+ $BRD = join(".", unpack('C4', $ADR | ~$MSK));
+# $NET = join(".", unpack('C4', $ADR & $MSK));
+ $MAC = "fe:fd:" . join(":", map { sprintf "%02x", $_ } unpack('C4', $ADR));
+ $ADR = join(".", unpack('C4', $ADR));
+ $MSK = join(".", unpack('C4', $MSK));
+
+# print "$DEV $VPN $NUM $LEN @addr $MAC $MASK $BRD $NET\n";
+
+ 1;
+}
+
+
+##############################################################################
+# vpn_start () starts specified VPN
+#
+# $_[0] ... VPN to start
+
+sub vpn_start {
+ vpn_load($_[0]) || die "tinc: could not vpn_load $_[0]";
+
+ if (! -c "/dev/$DEV") {
+ if (-e "/dev/$DEV") {
+ unlink("/dev/$DEV");
+ }
+ $num = $NUM + 16;
+ system("echo mknod --mode=0600 /dev/$DEV c 36 $num");
+ }
+ system("insmod ethertap -s --name=\"ethertap$NUM\" unit=\"$NUM\" >/dev/null");
+ system("ifconfig $DEV hw ether $MAC");
+ system("ifconfig $DEV $ADR netmask $MSK broadcast $BRD");
+ system("start-stop-daemon --start --quiet --pidfile /var/run/$NAME.$_[0].pid --exec $DAEMON -- -n $_[0] $EXTRA");
+}
+
+
+
+
+##############################################################################
+# vpn_stop () Stops specified VPN