contrib/privoxy-tor-toggle

   1 #!/bin/sh
   2 # A script to turn Tor SOCKS4a in Privoxy on or off.
   3
   4 CONFFILE=/etc/privoxy/config            # privoxy config file.
   5 TOR_REG="forward.*localhost:9050"       # Regular expression to find Tor in privoxy
   6 PRIVOXY="/etc/init.d/privoxy restart"   # command to reload privoxy config file.
   7 SED="/bin/sed"                          # sed command, of course.
   8 GREP="/bin/grep"                        # grep command.
   9
  10 usage () {
  11 echo "\
  12 privoxy-tor-toggle: Change Privoxy's configuration to use/not use Tor.
  13 Usage:
  14    privoxy.tor                  <-- Switch Tor on or off.
  15    privoxy.tor [on|off]         <-- Set Tor on or off.
  16    privoxy.tor status           <-- Display Tor's current status.
  17    privoxy.tor [-h|--help|-?]   <-- Print usage.
  18 "
  19 }
  20
  21 # Find out the current status of tor. Set $tor_status
  22 get_status () {
  23    gret=`$GREP -l -e "^$TOR_REG"  $CONFFILE`
  24    if [ x$gret = x ] ; then
  25         tor_status=off;
  26    else
  27         tor_status=on;
  28    fi
  29    return
  30 }
  31
  32 # Turn tor on/off according to $1
  33 set_tor () {
  34    tor_gate=$1
  35    get_status
  36    if [ $tor_status = $tor_gate ] ; then
  37       echo "Tor is already $1."
  38       return
  39    elif [ $tor_gate = flip ] ; then
  40         if [ $tor_status = on ] ; then
  41                 tor_gate=off
  42         elif [ $tor_status = off ] ; then
  43                 tor_gate=on
  44         fi
  45    fi
  46    echo "Turning Tor $tor_gate..."
  47    if [ $tor_gate = on ] ; then
  48         reg=s/^#\($TOR_REG\)/\\1/
  49         $SED -i.bak -r "$reg"  $CONFFILE
  50    else
  51         reg=s/^\($TOR_REG\)/#\\1/
  52         $SED -i.bak -r "$reg" $CONFFILE
  53    fi
  54    $PRIVOXY
  55    return 0;
  56 }
  57
  58 if [ x$1 = x ] ; then
  59    set_tor flip
  60 elif [ $1 = on ] ; then
  61    set_tor on
  62 elif [ $1 = off ] ; then
  63    set_tor off
  64 elif [ $1 = status ] ; then
  65    get_status
  66    echo "Tor is $tor_status"
  67 elif [ $1 = --help ] || [ $1 = -h ] || [ $1 = "-?" ] ; then
  68    usage
  69    exit 0
  70 else
  71    echo "Unrecognized option: \"$1\""
  72 fi
  73