Move DHCPv6 client configuration to this package and restructre parameters.

2 files changed, 165 insertions, 1 deletions

diff --git a/scripts/vyatta-dhcpv6-client.pl b/scripts/vyatta-dhcpv6-client.pl
new file mode 100644
index 00000000..c1a0dbd3
--- /dev/null
+++ b/scripts/vyatta-dhcpv6-client.pl
@@ -0,0 +1,157 @@
+#!/usr/bin/perl
+#
+# Module: vyatta-dhcpv6-client.pl
+#
+# **** License ****
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# This code was originally developed by Vyatta, Inc.
+# Portions created by Vyatta are Copyright (C) 2005-2009 Vyatta, Inc.
+# All Rights Reserved.
+#
+# Author: Bob Gilligan <gilligan@vyatta.com>
+# Date: April 2010
+# Description: Start and stop DHCPv6 client daemon for an interface.
+#
+# **** End License ****
+#
+#
+
+use strict;
+use lib "/opt/vyatta/share/perl5/";
+use FileHandle;
+use Vyatta::Config;
+use Getopt::Long;
+
+my $start_flag;		# Start the daemon
+my $stop_flag;		# Stop the daemon and delete all config files
+my $release_flag;	# Stop the daemon, but leave config file
+my $renew_flag;		# Re-start the daemon.  Functionally same as start_flag
+my $temp_flag;
+my $params_only_flag;
+my $ifname;
+
+
+sub gen_conf_file {
+    my ($conffile, $ifname) = @_;
+
+    my $FD_WR = new FileHandle;
+
+    if (!open($FD_WR, ">$conffile")) {
+	printf("Can't write config file: $conffile\n");
+	exit 1;
+    }
+    my $date = `date`;
+    my $user = `id -un`;
+    my $hostname = `hostname`;
+    chomp($date);
+    chomp($user);
+    chomp($hostname);
+
+    print $FD_WR "# This file was auto-generated by the Vyatta\n";
+    print $FD_WR "# configuration sub-system.  Do not edit it.\n";
+    print $FD_WR "\n";
+    print $FD_WR "#   Generated on $date by $user\n";
+    print $FD_WR "#\n";
+    print $FD_WR "interface \"$ifname\" {\n";
+    print $FD_WR "        send host-name \"$hostname\";\n";
+    print $FD_WR "        send dhcp6.oro 1, 2, 7, 12, 13, 23, 24, 39;\n";
+    print $FD_WR "}\n";
+}
+    
+
+#
+# Main Section
+#
+
+GetOptions("start" => \$start_flag,
+	   "stop" => \$stop_flag,
+	   "release" => \$release_flag,
+	   "renew" => \$renew_flag,
+	   "temporary" => \$temp_flag,
+	   "parameters-only" => \$params_only_flag,
+	   "ifname=s" => \$ifname,
+    );
+
+if ((defined $temp_flag) && (defined $params_only_flag)) {
+    printf("Error: --temporary and --parameters-only flags are mutually exclusive.\n");
+    exit 1;
+}
+
+if (!defined $ifname) {
+    printf("Error: Interface name must be specified with --ifname parameter.\n");
+    exit 1;
+}
+
+my $pidfile = "/var/lib/dhcp3/dhclient_v6_$ifname.pid";
+my $leasefile = "/var/lib/dhcp3/dhclient_v6_$ifname.leases";
+my $conffile = "/var/lib/dhcp3/dhclient_v6_$ifname.conf";
+my $cmdname = "/sbin/dhclient";
+
+if (defined $release_flag) {
+    if (! -e $conffile) {
+	printf("DHCPv6 client is not configured on interface $ifname.\n");
+	exit 1;
+    }
+
+    if (! -e $pidfile) {
+	printf("DHCPv6 client is already released on interface $ifname.\n");
+	exit 1;
+    }
+}
+
+if (defined $renew_flag) {
+    if (! -e $conffile) {
+	printf("DHCPv6 client is not configured on interface $ifname.\n");
+	exit 1;
+    }
+}
+
+if (defined $stop_flag || defined $release_flag) {
+    # Stop dhclient -6 on $ifname
+
+    printf("Stopping daemon...\n");
+    my $output=`$cmdname -6 -nw -cf $conffile -pf $pidfile -lf $leasefile -r $ifname`;
+    printf($output);
+    
+    # Delete files it leaves behind...
+    printf("Deleting related files...\n");
+    unlink($pidfile);
+    if (defined $stop_flag) {
+	# If just releasing, leave the config file around as a flag that
+	# DHCPv6 remains configured on this interface.
+	unlink($conffile);
+    }
+}
+
+if (defined $start_flag || defined $renew_flag) {
+    # Generate the DHCP client config file...
+    gen_conf_file($conffile, $ifname);
+
+    # First, kill any previous instance of dhclient running on this interface
+    #
+    printf("Stopping old daemon...\n");
+    my $output = `$cmdname -6 -pf $pidfile -x $ifname`;
+    printf($output);
+
+    # start "dhclient -6" on $ifname
+
+    my $args = "";
+    if (defined $temp_flag) {
+	$args .= " -T";
+    }
+    if (defined $params_only_flag) {
+	$args .= " -S";
+    }
+
+    printf("Starting new daemon...\n");
+    my $output=`$cmdname -6 -nw -cf $conffile -pf $pidfile -lf $leasefile $args $ifname`;
+    printf($output);
+}
diff --git a/scripts/vyatta-interfaces.pl b/scripts/vyatta-interfaces.pl
index 90d8dfc7..42ffc7d8 100755
--- a/scripts/vyatta-interfaces.pl
+++ b/scripts/vyatta-interfaces.pl
@@ -356,6 +356,13 @@ sub is_valid_addr_set {
 	exit 0; 
     }
 
+    if ($addr_net eq "dhcpv6") {
+	die "Error: can't use dhcpv6 client on loopback interface\n"
+	    if ($intf eq "lo");
+
+	exit 0; 
+    }
+
     my ($addr, $net);
     if ($addr_net =~ m/^([0-9a-fA-F\.\:]+)\/(\d+)$/) {
 	$addr = $1;
@@ -423,7 +430,7 @@ sub is_valid_addr_commit {
 	    $dhcp = 1;
 	} else {
 	    my $version = is_ip_v4_or_v6($addr);
-	    if ($version == 4) {
+	    if (defined($version) && $version == 4) {
 		$static_v4 = 1;
 	    }
 	}