first attempt at implementing CLI support for Dynamic DNS

8 files changed, 189 insertions, 0 deletions

diff --git a/Makefile.am b/Makefile.am
index ec5a473e..9cd18256 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -31,6 +31,7 @@ sbin_SCRIPTS += scripts/telnetd.init
 sbin_SCRIPTS += scripts/add_bootfile_eth_hwid
 sbin_SCRIPTS += scripts/mod_bootfile_eth_hwid
 sbin_SCRIPTS += scripts/dns-forwarding/vyatta-dns-forwarding.pl
+sbin_SCRIPTS += scripts/dynamic-dns/vyatta-dynamic-dns.pl
 
 noinst_DATA = test_bootfile
 
diff --git a/scripts/dynamic-dns/vyatta-dynamic-dns.pl b/scripts/dynamic-dns/vyatta-dynamic-dns.pl
new file mode 100644
index 00000000..5c2e4869
--- /dev/null
+++ b/scripts/dynamic-dns/vyatta-dynamic-dns.pl
@@ -0,0 +1,125 @@
+#!/usr/bin/perl
+#
+# Module: vyatta-dynamic-dns.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) 2008 Vyatta, Inc.
+# All Rights Reserved.
+#
+# Author: Mohit Mehta
+# Date: September 2008
+# Description: Script to run ddclient per interface as set in Vyatta CLI
+#
+# **** End License ****
+#
+
+use lib "/opt/vyatta/share/perl5/";
+use VyattaConfig;
+use VyattaMisc;
+use Getopt::Long;
+
+use strict;
+use warnings;
+use Switch;
+
+#
+# main
+#
+
+my ($update_dynamicdns, $stop_dynamicdns, $interface);
+
+GetOptions("update-dynamicdns!"            => \$update_dynamicdns,
+           "stop-dynamicdns!"              => \$stop_dynamicdns,
+           "interface=s"                   => \$interface);
+
+if (defined $update_dynamicdns) {
+   my $config;
+   $config  = dynamicdns_get_constants();
+   $config .= dynamicdns_get_values();
+   dynamicdns_write_file($config);
+   dynamicdns_restart();
+}
+
+if (defined $stop_dynamicdns) {
+    dynamicdns_stop();
+}
+
+exit 0;
+
+#
+# subroutines
+#
+
+sub dynamicdns_restart {
+    system("kill -9 `cat /var/run/ddclient_$interface.pid 2>/dev/null` >&/dev/null");
+    system("/usr/sbin/ddclient -file /etc/ddclient_$interface.conf >&/dev/null");
+}
+
+sub dynamicdns_stop {
+    system("kill -9 `cat /var/run/ddclient_$interface.pid 2>/dev/null` >&/dev/null");
+}
+
+sub dynamicdns_get_constants {
+    my $output;
+
+    my $date = `date`;
+    chomp $date;
+    $output  = "#\n# autogenerated by vyatta-dynamic-dns.pl on $date\n#\n";
+    $output .= "daemon=1m\n";
+    $output .= "syslog=yes\n";
+    $output .= "ssl=yes\n";
+    $output .= "pid=/var/run/ddclient_$interface.pid\n";
+    $output .= "cache=/tmp/ddclient_$interface.cache\n";
+    $output .= "use=if, if=$interface\n\n\n";
+    return $output;
+}
+
+sub dynamicdns_get_values {
+
+    my $output = '';
+    my $config = new VyattaConfig;
+    $config->setLevel("service dns dynamic interface $interface");
+
+    my @services = $config->listNodes("service");
+    print "Services under $interface: @services\n";
+    foreach my $service (@services) {
+       $config->setLevel("service dns dynamic interface $interface service $service");
+       switch ($service) {
+           case "dslreports" {$service="dslreports1";}
+           case "dyndns"     {$service="dyndns2";}
+           case "zoneedit"   {$service="zoneedit1";}
+       }
+       my $login = $config->returnValue("login");
+       my $password = $config->returnValue("password");
+       my @hostnames = $config->returnValues("host-name");
+       foreach my $hostname (@hostnames) {
+          $output .= "protocol=$service\n";
+          $output .= "login=$login\n";
+          $output .= "password='$password'\n";
+          $output .= "$hostname\n\n";
+       }
+    }
+
+    return $output;
+}
+
+sub dynamicdns_write_file {
+    my ($config) = @_;
+
+    open(my $fh, '>', "/etc/ddclient_$interface.conf") || die "Couldn't open \"/etc/ddclient_$interface.conf\" - $!";
+    print $fh $config;
+    close $fh;
+}
+
+
+# end of file
diff --git a/templates/service/dns/dynamic/interface/node.def b/templates/service/dns/dynamic/interface/node.def
new file mode 100644
index 00000000..bbf0c310
--- /dev/null
+++ b/templates/service/dns/dynamic/interface/node.def
@@ -0,0 +1,31 @@
+tag:
+help: Set interface to send DDNS updates for
+type: txt
+syntax:expression: exec "
+        intf_array=($(awk '$1 ~ /:/ { print $1 }' /proc/net/dev))
+        intf_array_len=${#intf_array[*]}
+        i=0
+        while [ $i -lt $intf_array_len ]; do
+             temp=${intf_array[$i]%:*}
+             if [ \"$temp\" == \"$VAR(@)\" ] ; then
+                   exit 0
+             fi
+             let i++
+        done
+        echo Invalid interface [$VAR(@)]
+        exit 1 "
+
+allowed: local -a array ;
+         array=($(awk '$1 ~ /:/ { print $1 }' /proc/net/dev));
+         echo -n ${array[@]%:*}
+
+commit:expression: $VAR(./@/service/@@) != ""; "Atleast one service must be set to send DDNS updates for $VAR(@)"
+
+delete:expression: "touch /tmp/ddclient_$VAR(@).$PPID"
+
+end:expression: "if [ -f \"/tmp/ddclient_$VAR(@).$PPID\" ]; then \
+        sudo /opt/vyatta/sbin/vyatta-dynamic-dns.pl --stop-dynamicdns --interface $VAR(@) \
+        rm /tmp/ddclient_$VAR(@).$PPID; \
+      else \
+        sudo /opt/vyatta/sbin/vyatta-dynamic-dns.pl --update-dynamicdns --interface $VAR(@); \
+      fi; "
diff --git a/templates/service/dns/dynamic/interface/node.tag/service/node.def b/templates/service/dns/dynamic/interface/node.tag/service/node.def
new file mode 100644
index 00000000..a515351e
--- /dev/null
+++ b/templates/service/dns/dynamic/interface/node.tag/service/node.def
@@ -0,0 +1,23 @@
+tag:
+help: Set service being used for Dynamic DNS
+type: txt
+syntax:expression: exec "
+        service_array=(dnspark dslreports dyndns easydns namecheap sitelutions zoneedit)
+        service_array_len=${#service_array[*]}
+        i=0
+        while [ $i -lt $service_array_len ]; do
+             if [ \"${service_array[$i]}\" == \"$VAR(@)\" ] ; then
+                   exit 0
+             fi
+             let i++
+        done
+        echo Invalid service [$VAR(@)]
+        exit 1 "
+
+allowed: local -a array ;
+         array=(dnspark dslreports dyndns easydns namecheap sitelutions zoneedit);
+         echo -n ${array[@]}
+
+commit:expression: $VAR(./@/login) != ""; "Set login for service $VAR(./@) to send DDNS updates for interface $VAR(../@)"
+commit:expression: $VAR(./@/password) != ""; "Set password for service $VAR(./@) to send DDNS updates for interface $VAR(../@)"
+commit:expression: $VAR(./@/host-name) != ""; "Set atleast one host-name registered with service $VAR(./@) to send DDNS updates for interface $VAR(../@)"
diff --git a/templates/service/dns/dynamic/interface/node.tag/service/node.tag/host-name/node.def b/templates/service/dns/dynamic/interface/node.tag/service/node.tag/host-name/node.def
new file mode 100644
index 00000000..e104ae8f
--- /dev/null
+++ b/templates/service/dns/dynamic/interface/node.tag/service/node.tag/host-name/node.def
@@ -0,0 +1,3 @@
+multi:
+help: Set host-name registered with DDNS service
+type: txt
diff --git a/templates/service/dns/dynamic/interface/node.tag/service/node.tag/login/node.def b/templates/service/dns/dynamic/interface/node.tag/service/node.tag/login/node.def
new file mode 100644
index 00000000..4a6ca920
--- /dev/null
+++ b/templates/service/dns/dynamic/interface/node.tag/service/node.tag/login/node.def
@@ -0,0 +1,2 @@
+help: Set login for DDNS service
+type: txt
diff --git a/templates/service/dns/dynamic/interface/node.tag/service/node.tag/password/node.def b/templates/service/dns/dynamic/interface/node.tag/service/node.tag/password/node.def
new file mode 100644
index 00000000..9dceae00
--- /dev/null
+++ b/templates/service/dns/dynamic/interface/node.tag/service/node.tag/password/node.def
@@ -0,0 +1,2 @@
+help: Set password for DDNS service
+type: txt
diff --git a/templates/service/dns/dynamic/node.def b/templates/service/dns/dynamic/node.def
new file mode 100644
index 00000000..d713fc1c
--- /dev/null
+++ b/templates/service/dns/dynamic/node.def
@@ -0,0 +1,2 @@
+help: Configure Dynamic DNS
+commit:expression: $VAR(./interface/@@) != ""; "Atleast one interface must be set to send DDNS updates for"