#!/bin/sh

# Copyright 2000 BSDi, Inc. Concord, CA, USA
# Copyright 2001, 2002 Slackware Linux, Inc.  Concord, CA, USA
# Copyright 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2014  Patrick J. Volkerding, Sebeka, MN, USA
# 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.


# Set initial variables:
CWD=$(pwd)
TMP=${TMP:-/tmp}

VERSION=${VERSION:-$(echo openssl-*.tar.gz | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1_slack14.1}

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

PKG1=$TMP/package-openssl
PKG2=$TMP/package-ossllibs
NAME1=openssl-$VERSION-$ARCH-$BUILD
NAME2=openssl-solibs-$VERSION-$ARCH-$BUILD

NUMJOBS=${NUMJOBS:--j6}

# So that ls has the right field counts for parsing...
export LC_ALL=C

cd $TMP
rm -rf $PKG1 $PKG2 openssl-$VERSION
tar xvf $CWD/openssl-$VERSION.tar.gz || exit 1
cd openssl-$VERSION

# Fix pod syntax errors which are fatal wih a newer perl:
find . -name "*.pod" -exec sed -i "s/^\=item \([0-9]\)\(\ \|$\)/\=item C<\1>/g" {} \;

# Use .so.0, not .so.0.9.8:
zcat $CWD/openssl.soname.diff.gz | patch -p1 --backup --verbose --suffix=.orig || exit 1
if [ "$ARCH" = "i486" ]; then
  # Build with -march=i486 -mtune=i686:
  zcat $CWD/openssl.optsx86.diff.gz | patch -p1 --backup --verbose --suffix=.orig || exit 1
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  LIBDIRSUFFIX="64"
fi

# Mitigate DROWN:
zcat $CWD/openssl.no.weak.sslv2.ciphers.diff.gz | patch -p1 --verbose || exit 1
zcat $CWD/openssl.no.weak.sslv3.ciphers.diff.gz | patch -p1 --verbose || exit 1

# OpenSSL has a (nasty?) habit of bumping the internal version number with
# every release.  This wouldn't be so bad, but some applications are so
# paranoid that they won't run against a different OpenSSL version than
# what they were compiled against, whether or not the ABI has changed.
#
# So, we will use the OPENSSL_VERSION_NUMBER from openssl-0.9.8o unless ABI
# breakage forces it to change.  Yes, we're finally using this old trick.  :)
sed -i "s/#define OPENSSL_VERSION_NUMBER.*/\/* Use 0x009080efL (0.9.8o) below to avoid pointlessly breaking the ABI *\/\n#define OPENSSL_VERSION_NUMBER 0x009080efL/g" crypto/opensslv.h || exit 1

chown -R root:root .
mkdir -p $PKG1/usr/doc/openssl-$VERSION
cp -a CHANGES CHANGES.SSLeay FAQ INSTALL INSTALL.MacOS INSTALL.VMS INSTALL.W32 \
  LICENSE NEWS README README.ENGINE doc $PKG1/usr/doc/openssl-$VERSION
find $PKG1/usr/doc/openssl-$VERSION -type d -exec chmod 755 {} \;
find $PKG1/usr/doc/openssl-$VERSION -type f -exec chmod 644 {} \;

# If there's a CHANGES file, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r CHANGES ]; then
  DOCSDIR=$(echo $PKG1/usr/doc/*-$VERSION)
  cat CHANGES | head -n 2000 > $DOCSDIR/CHANGES
  touch -r CHANGES $DOCSDIR/CHANGES
fi

# These are the known patent issues with OpenSSL:
# name   #         expires
# MDC-2: 4,908,861  2007-03-13, included.  :-)
# IDEA:  5,214,703  2010-05-25, not included.
# RC5:   5,724,428  2015-03-03, not included.

./config \
 --prefix=/usr \
 --openssldir=/etc/ssl \
 no-idea \
 no-rc5 \
 no-sse2 \
 shared

make $NUMJOBS depend || make depend || exit 1

make $NUMJOBS || make || exit 1

make install INSTALL_PREFIX=$PKG1 || exit 1

# Use proper libdir:
( cd $PKG1/usr; mv lib lib${LIBDIRSUFFIX} )

# Make the .so.? library symlinks:
( cd $PKG1/usr/lib${LIBDIRSUFFIX} ; ldconfig -l lib*.so.* )

# Move libraries, as they might be needed by programs that bring a network
# mounted /usr online:

mkdir $PKG1/lib${LIBDIRSUFFIX}
( cd $PKG1/usr/lib${LIBDIRSUFFIX}
  for file in lib*.so.?.* ; do
    mv $file ../../lib${LIBDIRSUFFIX}
    ln -sf ../../lib${LIBDIRSUFFIX}/$file .
  done 
  cp -a lib*.so.? ../../lib${LIBDIRSUFFIX}
)

# Add a cron script to warn root if a certificate is going to expire soon:
mkdir -p $PKG1/etc/cron.daily
zcat $CWD/certwatch.gz > $PKG1/etc/cron.daily/certwatch.new
chmod 755 $PKG1/etc/cron.daily/certwatch.new

mv $PKG1/etc/ssl/openssl.cnf $PKG1/etc/ssl/openssl.cnf.new

( cd $PKG1
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

mv $PKG1/etc/ssl/man $PKG1/usr
( cd $PKG1/usr/man/man1 ; mv passwd.1 ssl_passwd.1 )
( cd $PKG1/usr/man/man3 ; mv rand.3 ssl_rand.3 )
( cd $PKG1/usr/man/man3 ; mv err.3 ssl_err.3 )
# Compress and symlink the man pages:
if [ -d $PKG1/usr/man ]; then
  ( cd $PKG1/usr/man
    for manpagedir in $(find . -type d -name "man*") ; do
      ( cd $manpagedir
        for eachpage in $( find . -type l -maxdepth 1) ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.?
      )
    done
  )
fi

cd $PKG1
chmod 755 usr/lib${LIBDIRSUFFIX}/pkgconfig
sed -i -e "s#lib\$#lib${LIBDIRSUFFIX}#" usr/lib${LIBDIRSUFFIX}/pkgconfig/*.pc
mkdir -p install
zcat $CWD/doinst.sh-openssl.gz > install/doinst.sh
cat $CWD/slack-desc.openssl > install/slack-desc
/sbin/makepkg -l y -c n $TMP/${NAME1}.txz

# Make runtime package:
mkdir -p $PKG2/lib${LIBDIRSUFFIX}
( cd lib${LIBDIRSUFFIX} ; cp -a lib*.so.* $PKG2/lib${LIBDIRSUFFIX} )
( cd $PKG2/lib${LIBDIRSUFFIX} ; ldconfig -l * )
mkdir -p $PKG2/etc
( cd $PKG2/etc ; cp -a $PKG1/etc/ssl . )
mkdir -p $PKG2/usr/doc/openssl-$VERSION
( cd $TMP/openssl-$VERSION
  cp -a CHANGES CHANGES.SSLeay FAQ INSTALL INSTALL.MacOS INSTALL.VMS INSTALL.W32 \
  LICENSE NEWS README README.ENGINE $PKG2/usr/doc/openssl-$VERSION
)

# If there's a CHANGES file, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r CHANGES ]; then
  DOCSDIR=$(echo $PKG2/usr/doc/*-$VERSION)
  cat CHANGES | head -n 2000 > $DOCSDIR/CHANGES
  touch -r CHANGES $DOCSDIR/CHANGES
fi

find $PKG2/usr/doc/openssl-$VERSION -type d -exec chmod 755 {} \;
find $PKG2/usr/doc/openssl-$VERSION -type f -exec chmod 644 {} \;
cd $PKG2
mkdir -p install
zcat $CWD/doinst.sh-openssl-solibs.gz > install/doinst.sh
cat $CWD/slack-desc.openssl-solibs > install/slack-desc
/sbin/makepkg -l y -c n $TMP/${NAME2}.txz
