From 58c54d796ebcdc0e51a755f26b80f4558c247ee7 Mon Sep 17 00:00:00 2001
From: Tim Small <tim@seoss.co.uk>
Date: Fri, 10 Dec 2010 17:56:56 +0100
Subject: [PATCH] Minor tidy up and doc fixes

---
 plugins/other/tcp | 121 +++++++++++++++++++++++++++++-----------------
 1 file changed, 77 insertions(+), 44 deletions(-)

diff --git a/plugins/other/tcp b/plugins/other/tcp
index f7e53b65..04bccbcf 100755
--- a/plugins/other/tcp
+++ b/plugins/other/tcp
@@ -1,20 +1,45 @@
 #!/bin/sh
-#
-# tcp: Plugin to monitor IPV4/6 TCP socket status on a Linux host.
-#
-# License: GPLv2
-#
-# Copyright 2009 Tim Small - tim@seoss.co.uk
-#
-# Parameters supported:
-#
-#    config
-#    autoconf
-#
-#
-# Magic markers?
-#%# family=auto
-#%# capabilities=autoconf suggest
+
+: <<EOF
+
+=head1 NAME
+
+tcp - Plugin to monitor IPV4/6 TCP socket status on a Linux host.
+
+=head1 AUTHOR
+
+Copyright 2009 Tim Small <tim@seoss.co.uk>
+
+=head1 LICENSE
+
+GPLv2
+
+=begin comment
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; version 2 dated June, 1991.
+
+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.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+USA.
+
+=end comment
+
+=head1 MAGIC MARKERS
+
+ #%# family=manual
+ #%# capabilities=autoconf
+
+=cut
+
+EOF
 
 case $1 in
     config)
@@ -25,39 +50,47 @@ graph_category network
 graph_args -l 0
 graph_info TCP socket states for the local machine
 EOF
-	for i in established syn_sent syn_recv fin_wait1 fin_wait2 time_wait close close_wait last_ack listen closing
-	do
-		echo ${i}.label $i
-		echo ${i}.draw LINE2
-		echo ${i}.info Sockets in state $i
-	done
 
+		for i in established syn_sent syn_recv fin_wait1 \
+			fin_wait2 time_wait close close_wait last_ack \
+			listen closing
+		do
+			echo ${i}.label $i
+			echo ${i}.draw LINE2
+			echo ${i}.info Sockets in state $i
+		done
+		
         exit 0
-	;;
+		;;
     autoconf)
-        if [ -f /proc/net/tcp -o -f /proc/net/tcp6 ] ; then
-	    echo yes
-	    exit 0
-	else
-	    echo no
-	    exit 1
-	fi
+        if [ -f /proc/net/tcp -o -f /proc/net/tcp6 ]
+		then
+			echo yes
+			exit 0
+		else
+			echo no
+			exit 1
+		fi
 esac
 
 # See #include <netinet/tcp.h>
 
 cat /proc/net/tcp* | awk '
-  BEGIN  { STATE["01"]=STATE["02"]=STATE["03"]=STATE["04"]=STATE["05"]=STATE["06"]=STATE["07"]=STATE["08"]=STATE["09"]=STATE["0A"]=STATE["0B"]=0; }
-  match ($4, /0[0-9A-B]/) { STATE[$4]++; }
-  END    { print "established.value " STATE["01"];
-           print "syn_sent.value "    STATE["02"];
-	   print "syn_recv.value "    STATE["03"];
-	   print "fin_wait1.value "   STATE["04"];
-	   print "fin_wait2.value "   STATE["05"];
-	   print "time_wait.value "   STATE["06"];
-	   print "close.value "       STATE["07"];
-	   print "close_wait.value "  STATE["08"];
-	   print "last_ack.value "    STATE["09"];
-	   print "listen.value "      STATE["0A"];
-	   print "closing.value "     STATE["0B"];
-	 }'
+
+  match ($4, /0[0-9A-B]/) {
+      STATE[$4]++;
+  }
+
+  END {
+      printf "established.value %d\n", STATE["01"];
+      printf "syn_sent.value %d\n",    STATE["02"];
+      printf "syn_recv.value %d\n",    STATE["03"];
+      printf "fin_wait1.value %d\n",   STATE["04"];
+      printf "fin_wait2.value %d\n",   STATE["05"];
+      printf "time_wait.value %d\n",   STATE["06"];
+      printf "close.value %d\n",       STATE["07"];
+      printf "close_wait.value %d\n",  STATE["08"];
+      printf "last_ack.value %d\n",    STATE["09"];
+      printf "listen.value %d\n",      STATE["0A"];
+      printf "closing.value %d\n",     STATE["0B"];
+  }'