From f3d8a923cbf42966e4de11d0978f2c9518b90cb3 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <stephen.hemminger@vyatta.com>
Date: Tue, 16 Nov 2010 15:56:24 -0800
Subject: Add ability to configure telnet listen-addres

Bug 4452
Allow configuring a telnet listen-address either IPv4 or IPv6 (like SSH).
Unlike SSH, telnet only supports a single listen-address
---
 scripts/system/vyatta_update_telnet              |  2 +-
 scripts/telnetd.init                             | 41 +++++++++++++++++-------
 templates/service/telnet/listen-address/node.def |  4 +++
 templates/service/telnet/node.def                |  2 +-
 4 files changed, 36 insertions(+), 13 deletions(-)
 create mode 100644 templates/service/telnet/listen-address/node.def

diff --git a/scripts/system/vyatta_update_telnet b/scripts/system/vyatta_update_telnet
index 07d6946f..f50eef79 100755
--- a/scripts/system/vyatta_update_telnet
+++ b/scripts/system/vyatta_update_telnet
@@ -69,7 +69,7 @@ case "$1" in
 	then echo "Missing port number";
 	    usage
 	fi
-	exec sudo /opt/vyatta/sbin/telnetd.init restart "$2"
+	exec sudo /opt/vyatta/sbin/telnetd.init restart $2 $3
 	;;
 
     disable)
diff --git a/scripts/telnetd.init b/scripts/telnetd.init
index 81dc2f76..04f65147 100755
--- a/scripts/telnetd.init
+++ b/scripts/telnetd.init
@@ -13,6 +13,7 @@ declare progname=${0##*/}
 declare action=$1; shift
 
 port=$1; shift
+addr=$1; shift
 
 : ${port:=23}
 : ${bb:=/bin/busybox}
@@ -31,12 +32,21 @@ running_pid ()
     false
 }
 
+start_telnetd ()
+{
+    if [ -n "$addr" ]
+    then $bb telnetd -p $port -b $addr
+    else $bb telnetd -p $port
+    fi
+}
+
+
 start ()
 {
     local -i pid=$( running_pid )
 
     [ $pid -ne 0 ] && return
-    $bb telnetd -p $port
+    start_telnetd
 }
 
 stop ()
@@ -45,23 +55,32 @@ stop ()
     [ $pid -ne 0 ] && kill $pid
 }
 
+restart()
+{
+    local -i pid=$( running_pid )
+    if [ $pid -ne 0 ] 
+    then kill $pid
+	 sleep 1
+    fi
+    start_telnetd
+}
+
 status ()
 {
-    pidof $bb | while read pid ; do
-	f=$(tr '\000' '\t' < /proc/$pid/cmdline | cut -f2)
-	if [ $f == telnetd ] ; then
-	    echo running
-	    return
-	fi
-    done
-    echo not running
-    false
+    local -i pid=$( running_pid )
+    if [ $pid -ne 0 ]
+    then echo running
+	 return
+    else
+	 echo not running
+         false
+    fi
 }
 
 case "$action" in
   start)	start;;
   stop)		stop;;
-  restart)	stop; sleep 1; start;;
+  restart)	restart;;
   status)	status;;
   *)	echo "Usage: $progname {start|stop|restart|status}"
 	exit 1
diff --git a/templates/service/telnet/listen-address/node.def b/templates/service/telnet/listen-address/node.def
new file mode 100644
index 00000000..9faea595
--- /dev/null
+++ b/templates/service/telnet/listen-address/node.def
@@ -0,0 +1,4 @@
+type: ipv4,ipv6
+help: Local addresses telnet should listen on
+val_help: ipv4: IP address to listen for incoming connections
+val_help: ipv6: IPv6 address to listen for incoming connections
diff --git a/templates/service/telnet/node.def b/templates/service/telnet/node.def
index 9b2814aa..959a0421 100644
--- a/templates/service/telnet/node.def
+++ b/templates/service/telnet/node.def
@@ -4,5 +4,5 @@ create: touch /tmp/vyatta-telnet.$PPID
 delete: /opt/vyatta/sbin/vyatta_update_telnet disable
 end: if [ -f /tmp/vyatta-telnet.$PPID ]; then
           rm -f /tmp/vyatta-telnet.$PPID
-	  /opt/vyatta/sbin/vyatta_update_telnet enable $VAR(port/@)
+	  /opt/vyatta/sbin/vyatta_update_telnet enable $VAR(port/@) $VAR(listen-address/@)
      fi
-- 
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