#!/bin/bash

# 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, 2013, 2014, 2015, 2018  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:
cd $(dirname $0) ; CWD=$(pwd)
TMP=${TMP:-/tmp}

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

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i586 ;;
    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

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "${NAME1}.txz"
  echo "${NAME2}.txz"
  exit 0
fi

# Parallel build doesn't link properly.
#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" {} \;

## For openssl-1.1.x, don't try to change the soname.
## Use .so.1, not .so.1.0.0:
#sed -i "s/soname=\$\$SHLIB\$\$SHLIB_SOVER\$\$SHLIB_SUFFIX/soname=\$\$SHLIB.1/g" Makefile.shared

if [ "$ARCH" = "i586" ]; then
  # Build with -march=i586 -mtune=i686:
  sed -i "/linux-elf/s/fomit-frame-pointer/fomit-frame-pointer -march=i586 -mtune=i686/g" Configure
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  # Build with -march=i686 -mtune=i686:
  sed -i "/linux-elf/s/fomit-frame-pointer/fomit-frame-pointer -march=i686 -mtune=i686/g" Configure
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  LIBDIRSUFFIX="64"
fi

# Fix a lack of quotes in two c_rehash lines:
zcat $CWD/openssl-1.1.0h.fix_c_rehash_quoting.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-1.1.0h unless ABI
# breakage forces it to change.  Yes, we're finally using this old trick.  :)
sed -i "s/#define OPENSSL_VERSION_NUMBER.*/\/* Use 0x1010008fL (1.1.0h) below to avoid pointlessly breaking the ABI *\/\n#define OPENSSL_VERSION_NUMBER 0x1000205fL/g" include/openssl/opensslv.h || exit 1

chown -R root:root .
mkdir -p $PKG1/usr/doc/openssl-$VERSION
cp -a ACKNOWLEDGEMENTS AUTHORS CHANGES* CONTRIBUTING FAQ INSTALL* \
  LICENSE* NEWS NOTES* README* 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, not included.
# IDEA:  5,214,703  2010-05-25, not included.
#
# Although all of the above are expired, it's still probably
# not a good idea to include them as there are better
# algorithms to use.

./config \
 --prefix=/usr \
 --openssldir=/etc/ssl \
 zlib \
 enable-camellia \
 enable-seed \
 enable-rfc3779 \
 enable-cms \
 enable-md2 \
 enable-rc5 \
 enable-ssl3 \
 enable-ssl3-method \
 no-weak-ssl-ciphers \
 no-mdc2 \
 no-ec2m \
 no-idea \
 no-sse2 \
 shared

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

make $NUMJOBS || make || exit 1

make install DESTDIR=$PKG1 || exit 1

# No thanks on the static libraries:
rm -f $PKG1/usr/lib${LIBDIRSUFFIX}/*.a

# No thanks on manpages duplicated as html:
rm -rf $PKG1/usr/share/doc

# 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

# Make config file non-clobber:
mv $PKG1/etc/ssl/openssl.cnf $PKG1/etc/ssl/openssl.cnf.new

# Remove duplicate config file:
rm -f $PKG1/etc/ssl/openssl.cnf.dist

( 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
)

# Relocate the manpages:
mv $PKG1/usr/share/man $PKG1/usr
rmdir $PKG1/usr/share

# Fix manpage name collisions, and relink anything that linked to the old name:
( cd $PKG1/usr/man/man1
  mv passwd.1 ssl_passwd.1
  for file in *.1 ; do
    if [ -L $file ]; then
      if [ "$(readlink $file)" = "passwd.1" ]; then
        rm -f $file
        ln -sf ssl_passwd.1 $file
      fi
    fi
  done )

# 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

# If there's an openssl1 directory, then build openssl-1.0 shared libraries for
# compatibility with programs linked to those:
if [ -d $CWD/openssl1 ]; then
  ( cd $CWD/openssl1
    ./openssl1.build || exit 1
  ) || exit 1
  # Don't put these in the openssl package...  openssl-solibs is enough.
  #mkdir -p $PKG1/lib${LIBDIRSUFFIX}
  #cp -a $TMP/package-openssl1/usr/lib/lib*.so.?.?.? $PKG1/lib${LIBDIRSUFFIX}
  #( cd $PKG1/lib${LIBDIRSUFFIX} ; ldconfig -l lib*.so.?.?.? )
  mkdir -p $PKG2/lib${LIBDIRSUFFIX}
  cp -a $TMP/package-openssl1/usr/lib${LIBDIRSUFFIX}/lib*.so.?.?.? $PKG2/lib${LIBDIRSUFFIX}
  ( cd $PKG2/lib${LIBDIRSUFFIX} ; ldconfig -l lib*.so.?.?.? )
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 ACKNOWLEDGEMENTS AUTHORS CHANGES* CONTRIBUTING FAQ INSTALL* \
  LICENSE* NEWS NOTES* README* $PKG2/usr/doc/openssl-$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