#!/bin/sh
# ====================================================================
#  TorPostFlight is distributed under this license
#
#  Copyright (c) 2006 Andrew Lewman
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#     * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
#     * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
#
#     * Neither the names of the copyright owners nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# ======================================================================

# TorPostflight gets invoked after any install or upgrade.

ADDSYSUSER=$RECEIPT_PATH/addsysuser
if [ ! -x "$ADDSYSUSER" ]; then
  echo "Could not find addsysuser script."
  exit 1
fi

TORUSER=_tor
TORGROUP=daemon
TARGET=$2/Library/Tor
TORDIR=$TARGET/var/lib/tor
LOGFILE=/var/log/tor.log
TORBUTTON_VERSION="1.1.11-alpha"

# Check defaults for TARGET
if [ "$TARGET" == "//Library/Tor" ]; then
	TARGET=/Library/Tor
fi

# Create user $TORUSER in group daemon.  If it's already there, great.
$ADDSYSUSER $TORUSER "Tor System user" $TORDIR

# Create the tor directory, if it doesn't exist.
if [ ! -d $TORDIR ]; then
  mkdir -p $TORDIR
fi
# Check its permissions.
chown $TORUSER $TORDIR
chgrp daemon $TORDIR
chmod 700 $TORDIR

if [ ! -f $LOGFILE ]; then
    touch $LOGFILE
    chown $TORUSER $LOGFILE
    chgrp daemon $LOGFILE
    chmod 660 $LOGFILE
fi

# Create the configuration file only if there wasn't one already.
if [ ! -f $TARGET/torrc ]; then
  cp $TARGET/torrc.sample $TARGET/torrc
fi

# Ensure symbolic links
cd /usr/bin
if [ -e /usr/bin/tor -a ! -L /usr/bin/tor ]; then
  mv tor tor_old
fi
if [ -e /usr/bin/tor-resolve -a ! -L /usr/bin/tor-resolve ]; then
  mv tor-resolve tor-resolve_old
fi
ln -sf $TARGET/tor .
ln -sf $TARGET/tor-resolve .

cd /usr/share/man/man1
MAN1=$TARGET/man/man1
ln -sf $MAN1/*.1 .

if [ -d /Library/StartupItems/Privoxy ]; then
  find /Library/StartupItems/Privoxy -print0 | xargs -0 chown root:wheel
fi

# Copy Documentation
if [ -d $PACKAGE_PATH/Contents/Resources/documents ];then
   cp -r $PACKAGE_PATH/Contents/Resources/documents $TARGET/documents
fi

# Copy Uninstaller
if [ -f $PACKAGE_PATH/Contents/Resources/Tor_Uninstaller.applescript ]; then 
   cp $PACKAGE_PATH/Contents/Resources/Tor_Uninstaller.applescript $TARGET/Tor_Uninstaller.applescript
   chmod 550 $TARGET/Tor_Uninstaller.applescript
fi

if [ -f $PACKAGE_PATH/Contents/Resources/uninstall_tor_bundle.sh ]; then
   cp $PACKAGE_PATH/Contents/Resources/uninstall_tor_bundle.sh $TARGET/uninstall_tor_bundle.sh
   chmod 550 $TARGET/uninstall_tor_bundle.sh
fi

if [ -f $PACKAGE_PATH/Contents/Resources/package_list.txt ]; then
   cp $PACKAGE_PATH/Contents/Resources/package_list.txt $TARGET/package_list.txt
fi

if [ -d /Library/StartupItems/Tor ]; then
   rm -f /Library/StartupItems/Tor/Tor.loc
   echo "$TARGET" > /Library/StartupItems/Tor/Tor.loc
fi

if [ -f /Applications/Firefox.app/Contents/MacOS/firefox ]; then
  if [ -f $TARGET/torbutton-$TORBUTTON_VERSION.xpi ]; then
      /Applications/Firefox.app/Contents/MacOS/firefox -install-global-extension $TARGET/torbutton-$TORBUTTON_VERSION.xpi
# The following is a kludge to get around the fact that the installer
# runs as root.  This means the Torbutton extension will install with
# root permissions; thereby making uninstalling Torbutton from inside
# Firefox impossible.  The user will be caught in an endless loop of
# uninstall -> automatic re-installation of Torbutton.  The OSX
# installer doesn't tell you the owner of Firefox, therefore we have to
# parse it.
      USR=`ls -alrt /Applications/Firefox.app/Contents/MacOS/extensions/ | tail -1 | awk '{print $3}'`
      GRP=`ls -alrt /Applications/Firefox.app/Contents/MacOS/extensions/ | tail -1 | awk '{print $4}'`
      chown -R $USR:$GRP /Applications/Firefox.app/Contents/MacOS/extensions/
  fi
fi
