add a contrib script to toggle whether privoxy uses tor.

seems to be configured for debian by default.


svn:r3741

contrib/privoxy-tor-toggle

@@ -0,0 +1,71 @@
+#!/bin/sh
+# A script to turn tor sock4a in privoxy on or off.
+
+CONFFILE=/etc/privoxy/config		# privoxy config file.
+TOR_REG="forward.*localhost:9050"	# Regular expression open the tor in privoxy
+PRIVOXY="/etc/init.d/privoxy restart"	# command to reload privoxy config file.
+SED="/bin/sed"				# sed command, of course.
+GREP="/bin/grep"			# grep command.
+
+usage () {
+echo "\
+Usage:
+   privoxy.tor 			<-- No arguments. Switch the tor on or off.
+   privoxy.tor [on|off]		<-- Set the tor on or off.
+   privoxy.tor !.*xia		<-- Any argument other than above shows
+				    current status of the tor.
+   privoxy.tor [-h|--help|-?]	<-- Print usage.
+"
+}
+
+# Find out the current status of tor. Set $tor_status
+get_status () {
+   gret=`$GREP -l -e "^$TOR_REG"  $CONFFILE`
+   if [ x$gret = x ] ; then
+        tor_status=off;
+   else
+        tor_status=on;
+   fi
+   return
+}
+
+# Turn tor on/off according to $1
+set_tor () {
+   tor_gate=$1
+   get_status
+   if [ $tor_status = $tor_gate ] ; then
+      echo "The tor is already $1."
+      return
+   elif [ $tor_gate = flip ] ; then
+	if [ $tor_status = on ] ; then
+		tor_gate=off
+	elif [ $tor_status = off ] ; then
+     		tor_gate=on
+	fi
+   fi
+   echo "Turning the tor $tor_gate..."
+   if [ $tor_gate = on ] ; then
+   	reg=s/^#\($TOR_REG\)/\\1/
+	$SED -i.bak -r "$reg"  $CONFFILE
+   else
+   	reg=s/^\($TOR_REG\)/#\\1/
+	$SED -i.bak -r "$reg" $CONFFILE
+   fi
+   $PRIVOXY
+   return 0;
+}
+
+if [ x$1 = x ] ; then
+   set_tor flip
+elif [ $1 = on ] ; then
+   set_tor on
+elif [ $1 = off ] ; then 
+   set_tor off
+elif [ $1 = --help ] || [ $1 = -h ] || [ $1 = "-?" ] ; then
+   usage
+   exit 0
+else
+   get_status
+   echo "Currently, the tor is $tor_status."
+fi
+