#!/bin/bash
#
#  silc-client.SlackBuild is free software; you can redistribute
#  it and/or modify it under the terms of the GNU General Public License as
#  published by the Free Software Foundation; either version 2 of the License,
#  or any later version.
#
#  silc-client.SlackBuild is distributed in the hope that it will
#  be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
#  Public License for more details.
#
#  You should have received a copy of the GNU General Public License along
#  with this program; if not, write to the Free Software Foundation, Inc.,
#  59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
#
# slackbuild for silc-client, by Silvio Rhatto
# requires: silc-toolkit 
# tested: silc-client-1.1.6
#

# Look for slackbuildrc
if [ -f ~/.slackbuildrc ]; then
  source ~/.slackbuildrc
elif [ -f /etc/slackbuildrc ]; then
  source /etc/slackbuildrc
fi

# Set variables
CWD="$(pwd)"
SRC_NAME="silc-client"
PKG_NAME="silc-client"
ARCH=${ARCH:=i486}
SRC_VERSION=${VERSION:=1.1.6}
PKG_VERSION="$(echo "$SRC_VERSION" | tr '[[:blank:]-]' '_')"
BUILD=${BUILD:=1rha}
SRC_DIR=${SRC_DIR:=$CWD}/$PKG_NAME
TMP=${TMP:=/tmp}
PKG=${PKG:=$TMP/package-$PKG_NAME}
REPOS=${REPOS:=$TMP}
PREFIX=${PREFIX:=/usr}
PKG_WORK="$TMP/$SRC_NAME"
CONF_OPTIONS=${CONF_OPTIONS:="--sysconfdir=/etc --docdir=/usr/doc/$PKG_NAME-$PKG_VERSION"}
NUMJOBS=${NUMJOBS:=""}

# Set system libraries' path and optmization flags based on $ARCH
LIBDIR="$PREFIX/lib"

if [ "$ARCH" = "i386" ]; then
  SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
elif [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mcpu=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686"
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIR="$PREFIX/lib64"
  LDFLAGS="-L/lib64 -L/usr/lib64"
fi

# Set error codes (used by createpkg)
ERROR_WGET=31;      ERROR_MAKE=32;      ERROR_INSTALL=33
ERROR_MD5=34;       ERROR_CONF=35;      ERROR_HELP=36
ERROR_TAR=37;       ERROR_MKPKG=38;     ERROR_GPG=39
ERROR_PATCH=40;     ERROR_VCS=41;       ERROR_MKDIR=42

# Clean up any leftovers of previous builds
rm -rf "$PKG_WORK" 2> /dev/null
rm -rf "$PKG" 2> /dev/null

# Create directories if necessary
mkdir -p "$SRC_DIR" || exit $ERROR_MKDIR
mkdir -p "$PKG" || exit $ERROR_MKDIR
mkdir -p "$REPOS" || exit $ERROR_MKDIR
mkdir -p "$PKG_WORK" || exit $ERROR_MKDIR

# Dowload source if necessary
SRC="$SRC_NAME-$VERSION.tar.bz2"
URL="http://silcnet.org/download/client/sources/$SRC"

if [ ! -s "$SRC_DIR/$SRC" ] || ! bunzip2 -t "$SRC_DIR/$SRC" 2> /dev/null; then
  wget "$URL" -O "$SRC_DIR/$SRC" || exit $ERROR_WGET
fi

# Untar
cd "$PKG_WORK"
tar --no-same-owner --no-same-permissions -xvf "$SRC_DIR/$SRC" || exit $ERROR_TAR
PKG_SRC="$PWD/`ls -l | awk '/^d/ { print $NF }'`"
cd "$PKG_SRC"

# Configure
CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  ./configure \
  --prefix="$PREFIX" --libdir="$LIBDIR" $CONF_OPTIONS || exit $ERROR_CONF

# Compile
make $NUMJOBS || exit $ERROR_MAKE

# Install
make install DESTDIR="$PKG" || exit $ERROR_INSTALL

# Strip binaries
( cd "$PKG"
  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
)

# Install documentation
DOCS="CHANGES COPYING CREDITS README TODO"
mkdir -p "$PKG/usr/doc/$PKG_NAME-$PKG_VERSION" || exit $ERROR_MKDIR
for doc in $DOCS; do
  if [ -f "$doc" ]; then
    cp -a $doc "$PKG/usr/doc/$PKG_NAME-$PKG_VERSION"
  fi
done

# Add package description (slack-desc)
mkdir -p "$PKG/install" || exit $ERROR_MKDIR
cat << EODESC > "$PKG/install/slack-desc"
# HOW TO EDIT THIS FILE:
# The "handy ruler" below makes it easier to edit a package description. Line
# up the first '|' above the ':' following the base package name, and the '|'
# on the right side marks the last column you can put a character in. You must
# make exactly 11 lines for the formatting to be correct.  It's also
# customary to leave one space after the ':'.

           |-----handy-ruler--------------------------------------------------|
silc-client: silc-client (Toolkit for Secure Internet Live Conferencing)
silc-client:
silc-client: SILC (Secure Internet Live Conferencing) is a protocol which
silc-client: provides secure conferencing services in the Internet. It can be
silc-client: used to send any kind of messages, in addition to normal text
silc-client: messages. This includes multimedia messages like images, video,
silc-client: and audio stream. All messages in the SILC network are encrypted
silc-client: and authenticated, and messages can also be digitally signed. SILC
silc-client: protocol supports AES, SHA-1, PKCS#1, PKCS#3, X.509, OpenPGP is
silc-client: being developed in the IETF.
silc-client: 
EODESC

# Move config files to .new to avoid overwriting any system config
for config_file in etc/silc.conf; do
  mv $PKG/$config_file $PKG/$config_file.new
done

# Add a post-installation script (doinst.sh)
mkdir -p "$PKG/install" || exit $ERROR_MKDIR
cat << EOSCRIPT > "$PKG/install/doinst.sh"
config() {
  NEW="\$1"
  OLD="\$(dirname \$NEW)/\$(basename \$NEW .new)"
  OLD="\$(dirname \$NEW)/\$(basename \$OLD .sample)"
  OLD="\$(dirname \$NEW)/\$(basename \$OLD .dist)"

  # If there's no config file by that name, mv it over:
  if [ ! -r \$OLD ]; then
    mv \$NEW \$OLD
  elif [ "\$(cat \$OLD | md5sum)" = "\$(cat \$NEW | md5sum)" ]; then
    # toss the redundant copy
    rm \$NEW
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}

mkgroup() {
  GROUP="\$1"
  if ! grep -qe "^\$GROUP:" etc/group; then
    echo Creating group \$GROUP...
    chroot . /usr/sbin/groupadd \$GROUP
  fi
}

mkuser() {
  USER="\$1"
  if [ ! -z "\$2" ]; then
    GROUP="\$2"
  else
    GROUP="\$USER"
  fi
  if ! grep -qe "^\$USER:" etc/passwd; then
    echo Creating user \$USER...
    chroot . /usr/sbin/useradd \$USER -g \$GROUP
  fi
}

config etc/silc.conf
EOSCRIPT

# Copy slack-required
mkdir -p "$PKG/install" || exit $ERROR_MKDIR
if [ -f "$CWD/slack-required" ]; then
  cp $CWD/slack-required $PKG/install
fi

# Build the package
cd "$PKG"
makepkg -l y -c n "$REPOS/$PKG_NAME-$PKG_VERSION-$ARCH-$BUILD.tgz" || exit $ERROR_MKPKG

# Delete source and build directories if requested
if [ "$CLEANUP" == "yes" ] || [ "$1" = "--cleanup" ]; then
  rm -rf "$PKG_WORK" "$PKG"
fi