#!/bin/bash
#Copyright 2003 William Stearns <wstearns@pobox.com>
#Version 0.0.2

Banner () {
	echo "======== $* ========"
}

Debug () {
	echo "$*" >&2
}

GetFile () {
	if [ -n "$1" ]; then
		for OneSource in $Sources ; do
			case $OneSource in
			/*)	#Local path
				if [ -n "`ls -A1rt $OneSource/$1 2>/dev/null`" ]; then
					Debug $1 found in $OneSource
					if [ "$OneSource" = "$Cache" ]; then
						Debug $1 already in cache
						break
					else
						Debug Copying $1 from $OneSource
						cp -p $OneSource/$1 $Cache >/dev/null && break	#Exit if successful
					fi
				fi
				;;
			*::*)	#Rsync 
				if rsync "$OneSource/$1" >/dev/null 2>&1 ; then		#Return code 0=file exists, 23, not there.  Works with wildcards.
					Debug Rsyncing $1 down from $OneSource
					rsync -a "$OneSource/$1" "$Cache" >/dev/null && break	#Exits from innermost for/while/until loop.
				else
					Debug Rsync $OneSource doesn\'t have $1
				fi
				;;
			http*|ftp*)
				Debug http/ftp unimplemented.
#					cd "$WorkDir/sources/"
#					wget "$1"
#					cd -
				;;
			esac
		done
	else
		Debug Nothing requested in GetFile
	fi
	echo `ls -A1rt $Cache/$1 2>/dev/null | tail -1`					#Most recent cached rpm
}


build="yes"

for OneRequest in $* ; do
	case $OneRequest in
	--nobuild)
		build='no'
		;;
	fileutils|chgrp|chmod|chown|cp|dd|df|ln|ls|mkdir|mknod|mv|rm|rmdir|sync|touch|dir|dircolors|du|install|mkfifo|shred|vdir)
		fileutils='yes'
		;;
	nc)
		nc='yes'
		;;
	textutils|cat|cut|sort|cksum|comm|csplit|cut|expand|fmt|fold|head|join|md5sum|nl|od|paste|pr|ptx|sha1sum|split|sum|tac|tail|tr|tsort|unexpand|uniq|wc)
		textutils='yes'
		;;
	procps|ps|sysctl|free|oldps|pgrep|pkill|skill|snice|tload|top|uptime|vmstat|w|watch)
		procps='yes'
		;;
	*)
		Debug Unknown request $OneRequest, what rpm has that?
		;;
	esac
done

if [ -z "$fileutils$nc$textutils$procps" ]; then
	#If no requests made, build everything
	fileutils="yes"
	nc="yes"
	textutils="yes"
	procps='yes'
fi

#Preferred first, space separated rsync or /path/ dirs (future ftp/http)
Sources="/usr/src/staticiso-sources/
 zaphod.stearns.org::redhatmirror/pub/redhat/linux/updates/7.3/en/os/SRPMS/
 zaphod.stearns.org::redhatmirror/pub/redhat/linux/7.3/en/os/i386/SRPMS/"

Cache=/usr/src/staticiso-sources/

if [ -z "$WorkDir" ]; then
	WorkDir="$HOME/staticiso-build/"
fi

mkdir --parents "$Cache"




if [ -d "$WorkDir" ]; then
	echo "$WorkDir exists, exiting."
	exit 1
fi
mkdir --parents "$WorkDir"
mkdir --parents "$WorkDir/unpack/"
if ! cd "$WorkDir" 2>/dev/null ; then
	echo "Unable to change to $WorkDir, exiting."
	exit 1
fi

export CFLAGS="$CFLAGS -static"

if [ "$fileutils" = "yes" ]; then
	Banner fileutils
	if [ "$build" = 'yes' ]; then
		MyRpm=`GetFile fileutils-*.src.rpm`
		rpm --rebuild "$MyRpm"
	fi
	cd "$WorkDir/unpack/"
	rpm2cpio /home/wstearns/rpm/RPMS/i386/fileutils-*.i386.rpm | cpio -i -d -m
fi

if [ "$nc" = "yes" ]; then
	#FIXME - makefile clobbers -static
	Banner nc
	if [ "$build" = 'yes' ]; then
		MyRpm=`GetFile nc-*.src.rpm`
		Debug Source RPM is $MyRpm
	fi
	rpm --rebuild "$MyRpm"
	cd "$WorkDir/unpack/"
	rpm2cpio /home/wstearns/rpm/RPMS/i386/nc-*.i386.rpm | cpio -i -d -m
fi

if [ "$textutils" = "yes" ]; then
	Banner textutils
	if [ "$build" = 'yes' ]; then
		MyRpm=`GetFile textutils-*.src.rpm`
		rpm --rebuild "$MyRpm"
	fi
	cd "$WorkDir/unpack/"
	rpm2cpio /home/wstearns/rpm/RPMS/i386/textutils-*.i386.rpm | cpio -i -d -m
fi

if [ "$procps" = "yes" ]; then
	#FIXME - not -static
	Banner procps
	MyRpm=`GetFile procps-*.src.rpm`
	if [ "$build" = 'yes' ]; then
		rpm --rebuild "$MyRpm"
		cd "$WorkDir/unpack/"
	fi
	rpm2cpio /home/wstearns/rpm/RPMS/i386/procps-*.i386.rpm | cpio -i -d -m
fi

#Template
#if [ "$ZZ" = "yes" ]; then
#	Banner ZZ
#	MyRpm=`GetFile ZZ-*.src.rpm`
#	if [ "$build" = 'yes' ]; then
#		rpm --rebuild "$MyRpm"
#		cd "$WorkDir/unpack/"
#	fi
#	rpm2cpio /home/wstearns/rpm/RPMS/i386/ZZ-*.i386.rpm | cpio -i -d -m
#fi
	

cd "$WorkDir"
mkisofs -gid 0 -uid 0 -pad -r -T -o "$WorkDir/static.`date +%y%m%d`.iso" unpack/

bzip2 -9 -k "$WorkDir/static.`date +%y%m%d`.iso"