#!/bin/sh

######################################################
# Build script for Core 11.0                         #
#                                                    #
# See .info for details                              #
######################################################

# run the script as root so permissions work

 if [ `/usr/bin/id -u` -ne 0 ]; then
   echo "Need root privileges. exec(ing) under sudo" >&2
   exec sudo $0 $@
 fi

######################################################
# Configure extension creation parameters            #
######################################################

EXTNAM=dropbear
VERSION=2020.80
RELEASE=$EXTNAM-$VERSION
SRCNAM=$RELEASE.tar.bz2
DOWNLOAD=https://matt.ucc.asn.au/dropbear/releases/$SRCNAM
TMPDIR=/tmp/$EXTNAM
cd $(dirname $0)
BASEDIR=$PWD

# pull in required tools must be run as user SUDO_USER stored in
# /this script/-dep
sudo -u $SUDO_USER tce-load -w `cat ${0}-dep`
sudo -u $SUDO_USER tce-load -i `cat ${0}-dep`

# download source if not present

if [ ! -f $SRCNAM ]
then
   wget $DOWNLOAD
fi

######################################################
# Prepare extension creation                         #
######################################################

# Remove dirs and files left from previous creation

rm -r -f $RELEASE

rm -r -f $TMPDIR $TMPDIR-doc

######################################################
# Compile extension                                  #
######################################################

# Export variables needed for compilation
case $(uname -m) in
  i386 | i486 | i586 | i686 | x86)
    export CFLAGS="-march=i486 -mtune=i686"
    export CXXFLAGS="-march=i486 -mtune=i686"
    ;;
  x86_64)
    export CFLAGS="-flto -fuse-linker-plugin -mtune=generic"
    export CXXFLAGS="-flto -fuse-linker-plugin -mtune=generic"
    ;;
  arm*)
    export CFLAGS=""
    export CXXFLAGS=""
    ;;
  armv6*)
    export CFLAGS="-march=armv6 -mcpu=arm1176jzf-s -mfpu=vfp"
    export CXXFLAGS="-march=armv6 -mcpu=arm1176jzf-s -mfpu=vfp"
    ;;
  armv7*)
    export CFLAGS="-march=armv7-a -mtune=cortex-a7 -mfpu=neon"
    export CXXFLAGS="-march=armv7-a -mtune=cortex-a7 -mfpu=neon"
    ;;
  aarch64)
    export CFLAGS="-march=armv8-a+crc -mtune=cortex-a53"
    export CXXFLAGS="-march=armv8-a+crc -mtune=cortex-a53"
    ;;
  *)
    echo "Unrecongized machine type please update script"
    exit 1
    ;;
esac
    export CFLAGS="$CFLAGS -Os"
    export CXXFLAGS="$CXXFLAGS -Os -fno-exceptions -fno-rtti -fno-asynchronous-unwind-tables"
    export LDFLAGS="-Wl,-O1"

    # verified no pthread_cancel so drop asynchronous-unwind-tables
    export CFLAGS="$CFLAGS -fno-asynchronous-unwind-tables"

# Unpack source in current directory

tar -xf $SRCNAM

# Configure it

cp localoptions.h $RELEASE

cd $RELEASE
./configure --prefix=/usr/local --disable-lastlog

# Compile

make DESTDIR=$TMPDIR PROGRAMS="dropbear dbclient dropbearkey dropbearconvert scp" MULTI=1 || exit 1
make DESTDIR=$TMPDIR PROGRAMS="dropbear dbclient dropbearkey dropbearconvert scp" MULTI=1 strip || exit 1
touch /tmp/mark
make DESTDIR=$TMPDIR PROGRAMS="dropbear dbclient dropbearkey dropbearconvert scp" MULTI=1 install || exit 1

mkdir -p $TMPDIR/usr/local/share/doc/dropbear/
cp LICENSE $TMPDIR/usr/local/share/doc/dropbear/

# Delete compilation work directory

cd ..
rm -r -f $RELEASE

# Add TC specific files

chown root:staff dropbear banner
chmod a+x dropbear

mkdir -p $TMPDIR/usr/local/etc/dropbear
cp banner $TMPDIR/usr/local/etc/dropbear

mkdir -p $TMPDIR/usr/local/etc/init.d
cp dropbear $TMPDIR/usr/local/etc/init.d

# add ssh link so scp does not break
ln -s /usr/local/bin/dropbearmulti $TMPDIR/usr/local/bin/ssh

# Adjust directory access rights

find $TMPDIR/ -type d | xargs chmod -v 755;

# Strip executables

#find $TMPDIR | xargs file | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded

# Move files to doc extension

mkdir -p $TMPDIR-doc/usr/local/
mv $TMPDIR/usr/local/share $TMPDIR-doc/usr/local/share

# Move the license back for submitqc

mkdir -p $TMPDIR/usr/local/share/doc/dropbear/
mv $TMPDIR-doc/usr/local/share/doc/dropbear/LICENSE $TMPDIR/usr/local/share/doc/dropbear/
rmdir $TMPDIR-doc/usr/local/share/doc/dropbear/ $TMPDIR-doc/usr/local/share/doc/ $TMPDIR-doc/usr/local/share/

###################################################
# Create base extension in temp dir               #
###################################################

cd $TMPDIR/..

mksquashfs $TMPDIR $EXTNAM.tcz -noappend -processors 1

cd $TMPDIR

find ./usr -not -type d | sort | sed 's/^\.//' > ../$EXTNAM.tcz.list

mv ../$EXTNAM.tcz ../$EXTNAM.tcz.list .

# Create md5 file

md5sum $EXTNAM.tcz > $EXTNAM.tcz.md5.txt

# Put them all back in the starting directory

mv $EXTNAM.tcz* $BASEDIR

# Cleanup temp directory

rm -r -f $TMPDIR

###################################################
# Create doc extension in temp dir                #
###################################################

cd $TMPDIR-doc/..

mksquashfs $TMPDIR-doc $EXTNAM-doc.tcz -noappend -processors 1

cd $TMPDIR-doc

find ./usr -not -type d | sort | sed 's/^\.//' > ../$EXTNAM-doc.tcz.list

mv ../$EXTNAM-doc.tcz ../$EXTNAM-doc.tcz.list .

# Create md5 file

md5sum $EXTNAM-doc.tcz > $EXTNAM-doc.tcz.md5.txt

# Put them all back in the starting directory

mv $EXTNAM-doc.tcz* $BASEDIR

# Cleanup temp directory

rm -r -f $TMPDIR-doc