allow dhcp-interface for the next-hop on static routes

Signed-off-by: Daniil Baturin <daniil@baturin.org>

2 files changed, 61 insertions, 0 deletions

diff --git a/scripts/vyatta-static-dhcp.pl b/scripts/vyatta-static-dhcp.pl
new file mode 100755
index 00000000..2bec6043
--- /dev/null
+++ b/scripts/vyatta-static-dhcp.pl
@@ -0,0 +1,32 @@
+#!/usr/bin/perl
+use Getopt::Long;
+use strict;
+
+my ($iface, $dhcp, $route, $table, $nip, $oip, $reason);
+GetOptions("interface=s"    => \$iface,
+           "dhcp=s"         => \$dhcp,
+           "route=s"        => \$route,
+           "table=s"        => \$table,
+           "new_routers=s"  => \$nrouters,
+           "old_routers=s"  => \$orouters,
+           "reason=s"       => \$reason);
+
+# check if an update is needed
+exit(0) if (($iface ne $dhcp) || ($orouters eq $nrouters) || ($reason ne "BOUND"));
+logger("DHCP address on $iface updated to $nip from $oip: Updating static route $route in table $table.");
+if ($table eq "main") {
+    $table = "";
+}
+else {
+    $table = "table $table";
+}
+system("vtysh -c 'configure terminal' -c 'ip route $route $nrouters $table' ");
+
+sub logger {
+  my $msg = pop(@_);
+  my $FACILITY = "daemon";
+  my $LEVEL = "notice";
+  my $TAG = "tunnel-dhclient-hook";
+  my $LOGCMD = "logger -t $TAG -p $FACILITY.$LEVEL";
+  system("$LOGCMD $msg");
+}
diff --git a/scripts/vyatta-update-static-route.pl b/scripts/vyatta-update-static-route.pl
new file mode 100755
index 00000000..5ac98fcd
--- /dev/null
+++ b/scripts/vyatta-update-static-route.pl
@@ -0,0 +1,29 @@
+#!/usr/bin/perl
+
+use Getopt::Long;
+use strict;
+use lib "/opt/vyatta/share/perl5";
+use Vyatta::Config;
+
+my ($iface, $route, $table, $option);
+GetOptions("interface=s"    => \$iface,
+           "route=s"        => \$route,
+           "table=s"        => \$table,
+           "option=s"       => \$option
+           );
+my $hash = `echo $iface $route $table | md5sum | cut -c1-10`;
+my $FILE_DHCP_HOOK = "/etc/dhcp3/dhclient-exit-hooks.d/static-route-$hash";
+my $dhcp_hook = '';
+if ($option eq 'create') {
+    $dhcp_hook =<<EOS;
+#!/bin/sh
+/opt/vyatta/bin/sudo-users/vyatta-static-dhcp.pl --interface=\"\$interface\" --dhcp=\"$iface\" --route=\"$route\" --table=\"$table\" --new_routers=\"\$new_routers\" --old_routers=\"\$old_routers\" --reason=\"\$reason\"
+EOS
+}
+
+open my $dhcp_hook_file, '>', $FILE_DHCP_HOOK
+    or die "cannot open $FILE_DHCP_HOOK";
+print ${dhcp_hook_file} $dhcp_hook;
+close $dhcp_hook_file;
+exit 0;
+