#!/bin/sh
#
# Slackware build script for tor
#
# Copyright 2011-2012 Marco Bonetti <sid77@slackware.it>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''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 AUTHOR 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.

PRGNAM=tor
VERSION=${VERSION:-0.2.2.37}
BUILD=${BUILD:-3}
TAG=${TAG:-_SBo}

# Select tor's default user/group
TOR_USER=${TOR_USER:-tor}
TOR_UID=${TOR_UID:-220}
TOR_GROUP=${TOR_GROUP:-tor}
TOR_GID=${TOR_GID:-220}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

bailout() {
  echo "  You must have a $TOR_USER user and $TOR_GROUP group to run this script. "
  echo "  Something like this should suffice for most systems: "
  echo "    # groupadd -g $TOR_GID $TOR_GROUP "
  echo "    # useradd -u $TOR_UID -g $TOR_GID -c \"The Onion Router\" -d /dev/null -s /bin/false $TOR_USER "
  exit 1
}

# Bail if user and/or group isn't valid on your system
# uid=220 is suggested to avoid conflicts with other SBo packages,
# but it's your call: http://slackbuilds.org/uid_gid.txt
if ! grep -q "^$TOR_USER:" /etc/passwd; then
  bailout
elif ! grep -q "^$TOR_GROUP:" /etc/group; then
  bailout
fi

set -eu

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION
chown -R root:root .
chmod -R u+w,go+r-w,a-s .

CFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --with-tor-user=$TOR_USER \
  --with-tor-group=$TOR_GROUP \
  --build=$ARCH-slackware-linux

make
make install-strip DESTDIR=$PKG

# Create/install stuff that makes tor work (better)
mkdir -p $PKG/var/{run,log,lib}/tor
chown $TOR_USER:$TOR_GROUP $PKG/var/{run,log,lib}/tor
chmod 0700 $PKG/var/lib/tor
install -D -m 0755 $CWD/rc.tor $PKG/etc/rc.d/rc.tor.new
install -D -m 0755 contrib/torctl $PKG/usr/bin/torctl
install -D -m 0644 $CWD/torrc $PKG/etc/tor/torrc.new
mv $PKG/etc/tor/tor-tsocks.conf $PKG/etc/tor/tor-tsocks.conf.new
mkdir -p $PKG/etc/logrotate.d
sed -e "s,@USER@,$TOR_USER," -e "s,@GROUP@,$TOR_GROUP," $CWD/logrotate.tor \
  > $PKG/etc/logrotate.d/tor.new

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $(find $PKG/usr/man -type l) ; do ln -s $(readlink $i).gz $i.gz ; rm $i ; done

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/spec
cp -a ChangeLog INSTALL LICENSE README ReleaseNotes \
      $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
cat $CWD/README.SLACKWARE > $PKG/usr/doc/$PRGNAM-$VERSION/README.SLACKWARE

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}