Move DHCPv6 client op-mode commands to this package.

1 files changed, 211 insertions, 0 deletions

diff --git a/scripts/dhcpv6-client-show-leases.pl b/scripts/dhcpv6-client-show-leases.pl
new file mode 100644
index 0000000..546668c
--- /dev/null
+++ b/scripts/dhcpv6-client-show-leases.pl
@@ -0,0 +1,211 @@
+#!/usr/bin/perl
+
+# Module: dhcpv6-client-show-leases.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.
+#
+# A copy of the GNU General Public License is available as
+# `/usr/share/common-licenses/GPL' in the Debian GNU/Linux distribution
+# or on the World Wide Web at `http://www.gnu.org/copyleft/gpl.html'.
+# You can also obtain it by writing to the Free Software Foundation,
+# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+# MA 02110-1301, USA.
+#
+# This code was originally developed by Vyatta, Inc.
+# Portions created by Vyatta are Copyright (C) 2010 Vyatta, Inc.
+# All Rights Reserved.
+#
+# Author: Bob Gilligan
+# Date: April 2010
+# Description: Script to display DHCPv6 client leases in a user-friendly form
+#
+# **** End License ****
+
+use strict;
+use lib "/opt/vyatta/share/perl5/";
+
+use Getopt::Long;
+use Vyatta::Config;
+
+
+# Globals
+my $debug_flag = 0;
+
+GetOptions(
+    "debug"     => \$debug_flag,
+    );
+
+
+sub log_msg {
+    my $message = shift;
+
+    print "DEBUG: $message" if $debug_flag;
+}
+
+
+#
+# Main section.
+#
+
+opendir (my $dir, "/var/lib/dhcp3");
+my @lease_files;
+while (my $f = readdir $dir) {
+    if ($f =~ /^dhclient_v6_(\w+).leases$/) {
+	push (@lease_files, $f);
+    }
+}
+closedir $dir;
+
+if ($debug_flag) {
+    print "lease files:", join(' ',@lease_files), "\n";
+}
+
+# Holds the most recent (last) entry for each interface
+my %ghash = ();
+
+foreach my $lease_filename (@lease_files) {
+    my @lines=();
+
+    if (!open(LEASE_FILE, "</var/lib/dhcp3/$lease_filename")) {
+	printf("Can't open lease file for reading:  $lease_filename\n");
+	exit 1;
+    }
+
+    @lines = <LEASE_FILE>;
+    close(LEASE_FILE);
+    chomp @lines;
+
+    my $level = 0;
+    my $s1;
+    my $s2;
+    my $ia_na;
+    my $iaaddr;
+    my $ends_day;
+    my $ends_time;
+    my $ifname;
+    my $starts;
+    my $pref_life;
+    my $max_life;
+    my $binding_state;
+
+    # Parse the leases file into a hash keyed by IPv6 addr.
+    foreach my $line (@lines) {
+	log_msg("Line: $line\n");
+	if ($line =~ /^lease6 \{/) {
+	    if ($level != 0) {
+		printf("Found lease6 at level $level\n");
+		exit 1;
+	    }
+	    $level++;
+	} elsif ($line =~ /^.*ia-na .*\{/) {
+	    if ($level != 1) {
+		printf("Found ia-na at level $level\n");
+		exit 1;
+	    }
+	    log_msg("setting ia_na\n");
+	    ($s1, $ia_na, $s2) = split(' ', $line);
+	    $level++;
+	} elsif ($line =~ /^.*interface /) {
+	    if ($level != 1) {
+		printf("Found interface at level $level\n");
+		exit 1;
+	    }
+	    ($s1, $ifname) = split(' ', $line);
+	    $ifname =~ s/;//;
+	    $ifname =~ s/\"//g;
+	    log_msg("Setting ifname to $ifname\n");
+	} elsif ($line =~ /^.*iaaddr .*\{/) {
+	    if ($level != 2) {
+		printf("Found iaaddr at level $level\n");
+		exit 1;
+	    }
+	    ($s1, $iaaddr, $s2) = split(' ', $line);
+	    log_msg("Setting iaaddr to $iaaddr.\n");
+	    log_msg("s1 $s1 s2 $s2\n");
+	    $level++;
+	} elsif ($line =~ /^.*starts /) {
+	    ($s1, $starts) = split(' ', $line);
+	    $starts =~ s/;//;
+	} elsif ($line =~ /^.*preferred-life /) {
+	    ($s1, $pref_life) = split(' ', $line);
+	    $pref_life =~ s/;//;
+	} elsif ($line =~ /^.*max-life /) {
+	    ($s1, $max_life) = split(' ', $line);
+	    $max_life =~ s/;//;
+	} elsif ($line =~ /^.*ends /) {
+	    if ($level != 2) {
+		printf("Found ends at level $level\n");
+		exit 1;
+	    }
+	    log_msg("Setting ends_day ends_time\n");
+	    ($s1, $s2, $ends_day, $ends_time) = split(' ', $line);
+	    $ends_time =~ s/;//;
+	} elsif ($line =~ /^.*binding state /) {
+	    if ($level != 2) {
+		printf("Found binding state at level $level\n");
+		exit 1;
+	    }
+	    log_msg("Setting binding state\n");
+	    ($s1, $s2, $binding_state) = split(' ', $line);
+	    $binding_state =~ s/;//;
+	} elsif ($line =~ /^.*\{/) {
+	    log_msg("Unknown clause: $line\n");
+	    $level++;
+	} elsif ($line =~ /\}$/) {
+	    $level--;
+	    if ($level == 0) {
+		if (!defined($ia_na)) {
+		    printf("ia_na not defined\n");
+		    exit 1;
+		}
+
+		if (!defined($iaaddr)) {
+		    printf("iaaddr not defined\n");
+		    exit 1;
+		}
+	    }
+	} else {
+	    log_msg("Unknown parameter: $line\n");
+	}
+    }
+
+    my @array = ($ia_na, $iaaddr, $starts, $max_life, $pref_life);
+    $ghash{$ifname} = \@array;
+}
+
+# Display the leases...
+
+my $num_entries = scalar(keys %ghash);
+if ($num_entries == 0) {
+    printf("There are no DHCPv6 leases.\n");
+    exit 0;
+} else {
+    printf("DHCPv6 client leases:\n");
+}
+
+printf("\n");
+printf("Interface IPv6 Address                            Expires\n");
+printf("--------- --------------------------------------- ------------------------\n");
+foreach my $key (keys %ghash) {
+    my $entry = $ghash{$key};
+    my ($ia_na, $iaaddr, $starts, $max_life, $pref_life) = @$entry;
+    my $ts;
+    if (defined ($starts) && defined ($max_life)) {
+	my $exp_time = $starts + $max_life;
+	$ts = localtime($exp_time);
+    } else {
+	$ts = "Unknown";
+    }
+    printf ("%-9s %-39s %s\n", $key, $iaaddr, $ts);
+}
+
+
+