#!/bin/bash
#
# Blueprint to build netkit-telnet-0.17. 
#
# netkit-telnet contains a command-line telnet client and a telnet
# server daemon.  Telnet transmits passwords in clear text which can
# comprimise security.
#
# Source is from ftp://ftp.uk.linux.org/pub/linux/Networking/netkit/
#
#
# This script is public domain software and may be freely copied.
#
# This script 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.
#
#
# Define the package name, source directory, build directory and
# staging directory paths.  Prefixes to directories may be overridden
# by setting shell variables SRC, BUILD and STAGING.  For example,
# doing "export SRC=/root/foo" before calling this script will override
# the default /usr/src and set SRC_DIR to /root/foo/$PKG_NAME instead.
# 
PKG_NAME=$(basename $0)
SRC_DIR=${SRC:-/usr/src}/$PKG_NAME
BUILD_DIR=${BUILD:-/var/tmp/build}/$PKG_NAME
STAGING_DIR=${STAGING:-/var/tmp/staging}/$PKG_NAME
#
# Check that the source directory really exits and bail out if not.
if ! [ -d $SRC_DIR ]; then
  echo "$PKG_NAME: Cannot find source code directory $SRC_DIR."
  exit 1
fi
#
# Do not overwrite existing build directory.
if [ -d $BUILD_DIR ]; then
  echo "$PKG_NAME: Build directory $BUILD_DIR already exists."
  exit 2
else
  mkdir -p $BUILD_DIR
fi
#
# Do not overwrite existing staging directory.
if [ -d $STAGING_DIR ]; then
  echo "$PKG_NAME: Staging directory $STAGING_DIR already exists."
  exit 4
else
  mkdir -p $STAGING_DIR
fi
#
# This is not one of the packages that can be configured and built
# completely outside of the source tree.  So in order to leave the
# original source untouched, the contents of $SRC_DIR are first copied
# to $BUILD_DIR.  The copy in $BUILD_DIR is then modified to suit the
# configuration.
cp -dpR $SRC_DIR/* $BUILD_DIR
#
# A number of files must be fixed before they will compile properly.
# These files lack either #include <stdlib.h> or #include <string.h>
# The original files are renamed and sed scripts are used to insert
# the appropriate #include statments into new files.  The sed scripts
# are sensitive to the line breaks, so do not alter them.
cd $BUILD_DIR/telnet

mv main.cc main.cc.orig
sed -e '/#include <getopt\.h>/a\
#include <stdlib.h>' main.cc.orig >main.cc

mv network.cc network.cc.orig
sed -e '/#include <arpa\/telnet\.h>/a\
#include <stdlib.h>' network.cc.orig >network.cc

mv terminal.cc terminal.cc.orig
sed -e '/#include <stdio\.h>/a\
#include <stdlib.h>\
#include <string.h>' terminal.cc.orig >terminal.cc

mv utilities.cc utilities.cc.orig
sed -e '/#include <ctype\.h>/a\
#include <stdlib.h>\
#include <string.h>' utilities.cc.orig >utilities.cc

mv netlink.cc netlink.cc.orig
sed -e '/#include <netdb\.h>/a\
#include <string.h>' netlink.cc.orig >netlink.cc

# Configure the package for FHS compliance and i386 processor.
cd $BUILD_DIR
export CC="gcc -mcpu=i386"
export CXX="g++ -mcpu=i386"
$SRC_DIR/configure \
  --installroot=$STAGING_DIR \
  --prefix=/usr
#
# Check return status and bail out if it's non-zero.
if [ $? -gt 0 ]; then
  echo "$PKG_NAME: Configuration failed!"
  exit 8
fi
# Build the package.
make
#
# Check return code and bail if it looks bad.
if [ $? -gt 0 ]; then
  echo "$PKG_NAME: Build failed!"
  exit 16
fi
#
# Install into staging area.
install -m 755 -o root -g root -d $STAGING_DIR/usr/bin
install -m 755 -o root -g root -d $STAGING_DIR/usr/sbin
install -m 755 -o root -g root -d $STAGING_DIR/usr/man/man1
install -m 755 -o root -g root -d $STAGING_DIR/usr/man/man5
install -m 755 -o root -g root -d $STAGING_DIR/usr/man/man8
make install
#
# Check return code and bail if it looks bad.
if [ $? -gt 0 ]; then
  echo "$PKG_NAME: Installation to staging area failed!"
  exit 32
fi
#
# Do some post-install tweaking.
# Make a symlink telnetd that points to in.telnetd to be consistent
# with the telnetd -> in.telnetd manpage.
ln -s in.telnetd $STAGING_DIR/usr/sbin/telnetd
#
# Since the configure script does not recognize the "--mandir=" option
# the man directory needs to be moved manually.
mkdir $STAGING_DIR/usr/share
mv $STAGING_DIR/usr/man $STAGING_DIR/usr/share/man
#
# Remove the telnetd.8 symlink to in.telnetd.8 and replace it with a
# file that uses the groff include directive instead.  This makes it
# easier to use compressed manpages later.
rm $STAGING_DIR/usr/share/man/man8/telnetd.8
echo ".so in.telnetd.8" >$STAGING_DIR/usr/share/man/man8/telnetd.8
#
# Space saving tweaks
gzip $STAGING_DIR/usr/share/man/man1/*.1
gzip $STAGING_DIR/usr/share/man/man5/*.5
gzip $STAGING_DIR/usr/share/man/man8/*.8
#
# end of netkit-telnet blueprint