#!/bin/bash
ulimit -s unlimited
shopt -s extglob

# screen.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter <mozes@slackware.com>
#
# Copyright 2008, 2009, 2010, 2011, 2013, 2014, 2015, 2016, 2018, 2019, 2020, 2022  Patrick J. Volkerding, Sebeka, Minnesota, 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.

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
slackset_var_cwds

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# Extract source:
tar xvvf $CWD/$PKGNAM-$VERSION.tar.!(*sign|*asc|*sig)
cd $PKGNAM-$VERSION || exit 1
slackhousekeeping

# Revert a change to /etc/screenrc introduced in screen-4.3.x that prevents
# the console from being properly cleared when detaching from a screen session:
zcat $CWD/60-revert-screenrc-change.diff.gz | patch -p1 --verbose || exit 1

# Apply patches taken from Debian:
for pf in \
   26source_encoding.patch.gz \
   45suppress_remap.patch.gz \
   52fix_screen_utf8_nfd.patch.gz \
   ; do zcat $CWD/$pf | patch --verbose -p1 || exit 1
done

# Choose correct options depending on whether PAM is installed:
if [ -L /lib${LIBDIRSUFFIX}/libpam.so.? ]; then
  PAM_OPTIONS="--enable-pam"
  unset SHADOW_OPTIONS
else
  unset PAM_OPTIONS
  SHADOW_OPTIONS="--disable-pam"
fi

# Configure:
slack_autotoolsprep
CFLAGS="$SLKCFLAGS" \
./configure \
   --prefix=/usr \
   --sysconfdir=/etc \
   --libdir=/usr/lib${LIBDIRSUFFIX} \
   --mandir=/usr/man \
   --infodir=/usr/info \
   --with-sys-screenrc=/etc/screenrc \
   --with-pty-mode=0620 \
   --with-pty-group=5 \
   $PAM_OPTIONS \
   $SHADOW_OPTIONS \
   --enable-telnet \
   --disable-socket-dir \
   --enable-use-locale \
   --enable-colors256 \
   --enable-rxvt_osc \
   --build=${SLK_ARCH_BUILD} || failconfig

# Substitutions:
# It appears the change directly below is broken. We'll issue errata for
# it if a fix appears, but meanwhile we have a CVE to worry about.
# Tough choice.
#perl -pi -e 's|.*#undef HAVE_BRAILLE.*|#define HAVE_BRAILLE 1|' config.h
perl -pi -e 's|/usr/local/etc/screenrc|/etc/screenrc|' etc/etcscreenrc doc/*
perl -pi -e 's|/local/etc/screenrc|/etc/screenrc|' doc/*

# Build:
make $NUMJOBS || make || failmake

# Install into package:
make install DESTDIR=$PKG || failinstall
chmod 755 $PKG/usr/bin/screen-$VERSION
mkdir -p $PKG/etc/skel
cat etc/etcscreenrc > $PKG/etc/screenrc.new
cat etc/screenrc > $PKG/etc/skel/.screenrc.new

if [ ! -z "$PAM_OPTIONS" ]; then
  mkdir -vpm755 $PKG/etc/pam.d
  cat $CWD/screen.pam > $PKG/etc/pam.d/screen.new
fi

# Copy docs:
mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION
chmod 644 doc/FAQ
cp -favv COPYING ChangeLog HACKING INSTALL NEWS README TODO \
         doc/FAQ doc/README.DOTSCREEN \
         $PKG/usr/doc/$PKGNAM-$VERSION

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall   # strip all .a archives and all ELFs
slack_delete_lafiles # delete usr/lib{,64}/*.la
#slackstriprpaths     # strip rpaths
slackgzpages -i # compress man & info pages and delete usr/info/dir
slackslack      # chown -R root:root, chmod -R og-w, slackchown, slack644docs
slackdesc       # install slack-desc and doinst.sh
slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links