#!/bin/sh -
# Copyright (c) 2004 Jean Milanez Melo <jmelo@freebsdbrasil.com.br>
#				       <jmelo@FreeBSD.org>
#		     Patrick Tracanelli <eksffa@freebsdbrasil.com.br>
#
# $TinyBSD
#set -xv
CURRENTDIR=/usr/local/share/tinybsd
WORKDIR=/usr/obj/tinybsdbuild
KERNCONF=TINYBSD
DEFINSTARGS="-o 0 -g 0 -m 555"
SECTUNIT=$1
TRACKCYL=$2 
SECTRACK=$3
CONF=$4
IMG=$5
TS="=====>"

if [ "$#" -lt 3 ]
then
  echo "Woops!
   Usage: $0 <mediasize in sectors> <heads according to firmware> 
   <sectors according to firmware> <conf> [<tinybsd image name>]

   Example: $0 62592 4 32 

	or

  $0 62592 4 32 wireless

   Run diskinfo(8) -v against your CF device to get correct information
   about your disk."
  exit 1
fi

check_conf() {
        if [ -z ${CONF} ]
        then
                CONF="default"
                echo "${TS} Alternative conf name not set; defaulting to 'default'"
        fi
}

check_alt_imgname() {
	if [ -z ${IMG} ]
	then
		IMG="tinybsd.bin"
		echo "${TS} Alternative image name not set; defaulting to 'tinybsd.bin'"
	fi
}

remove_workdir() {
	chflags -R noschg ${WORKDIR}
	echo "${TS} Removing "${WORKDIR}
	rm -rf ${WORKDIR}
	echo "${TS} Removing Build Kernel Directory"
	rm -rf /usr/obj/usr/src/sys/${KERNCONF}
	echo "${TS}  done."
}


prework() {
	remove_workdir	
	mkdir -p ${WORKDIR}
}


create_tree() {
	echo "${TS} Creating directory hierarchy... "
	mtree -deU -f /etc/mtree/BSD.root.dist -p ${WORKDIR}
	mtree -deU -f /etc/mtree/BSD.usr.dist -p ${WORKDIR}/usr
	mtree -deU -f /etc/mtree/BSD.var.dist -p ${WORKDIR}/var
}


copy_binaries() {
#set -xv
	for file in `cat ${CURRENTDIR}/conf/${CONF}/tinybsd.basefiles | grep -v "#" | \
		cut -f1 -d":" | sort | uniq` ; do
		echo "${TS} Copying "/${file}" to "${WORKDIR}/${file} 
		cp -fp /${file} ${WORKDIR}/${file} ;
	done
#set +xv
}

make_kernel() {
	echo "${TS} Building customized tiny beastie kernel... "
	cp -p ${CURRENTDIR}/conf/${CONF}/${KERNCONF} /usr/src/sys/i386/conf
	cd /usr/src
	make buildkernel KERNCONF=${KERNCONF} || exit 1
	gzip -9 /usr/obj/usr/src/sys/${KERNCONF}/kernel
	install ${DEFINSTARGS} /usr/obj/usr/src/sys/${KERNCONF}/kernel.gz ${WORKDIR}/boot/kernel/
	install ${DEFINSTARGS} \
	  /usr/obj/usr/src/sys/${KERNCONF}/modules/usr/src/sys/modules/acpi/acpi/acpi.ko \
	    ${WORKDIR}/boot/kernel
	install -o 0 -g 0 -m 444 /sys/i386/conf/GENERIC.hints ${WORKDIR}/boot/device.hints
}


copy_libraries() {
#set -xv
	TDEPFILE="`mktemp -t deps`"
	TDEPFILES="`mktemp -t depsymlnk`"

	cd ${CURRENTDIR}/conf/${CONF}
	for file in `cat tinybsd.basefiles | grep -v "#" | cut -f1 -d":"`; do
		ldd -f "%p\n" /${file} >> ${TDEPFILE} ; # don't worry on progs been "not dynamic"
	done

	for libdeplib in `cat ${TDEPFILE} | sort | uniq`; do
		ldd -f "%p\n" /${libdeplib} >> ${TDEPFILE} ;
	done
	
	for pamdep in `ls -1 /usr/lib/pam*`; do
		echo $pamdep >> ${TDEPFILE} ;
		ldd -f "%p\n" /${pamdep} >> ${TDEPFILE} ;
	done	
	
	for lib in `cat ${TDEPFILE} | sort | uniq`; do
		echo "${TS} Copying "${lib}" to "${WORKDIR}${lib}
		cp -fp ${lib} ${WORKDIR}${lib} ;
	done

	for depsymlink in `cat ${TDEPFILE}`; do
		echo "${TS} Checking if ${depsymlink} is a symbolic link"
		/bin/ls -l $depsymlink | grep "\->" | awk '{print $11":"$9}' >> ${TDEPFILES}
	done

	for i in `cat ${TDEPFILES}`; do
                SOURCE_FILE=`echo $i | awk -F ":" '{print $1}'`
                TARGET_FILE=`echo $i | awk -F ":" '{print $2}'`

		echo "${TS} Unlinking ${WORKDIR}${TARGET_FILE}"
                chroot ${WORKDIR} /bin/rm -f ${TARGET_FILE}

		echo "${TS} Symlinking ${SOURCE_FILE} to ${TARGET_FILE}"
                chroot ${WORKDIR} /bin/ln -s ${SOURCE_FILE} ${TARGET_FILE}
        done

	echo -n "${TS} Unlinking "
	rm -fv ${TDEPFILE} ${TDEPFILES}
#set +xv
}


create_etc() {
	cd /usr/src/etc/sendmail/
	make freebsd.cf freebsd.submit.cf

	cd /usr/src/etc/
	mkdir -p ${WORKDIR}/var/named/etc/namedb
	make distribution DESTDIR=${WORKDIR}
}

personal_directories() {
	echo "${TS} Copying your custom configuration on conf/ ..."
	for custom in `find ${CURRENTDIR}/conf/${CONF}/ -type d -depth 1`; do
		cp -Rp ${custom}/* ${WORKDIR}/${custom#${CURRENTDIR}/conf/${CONF}/}/
	done
}

symlinks() {
#set -xv
	for i in `cat tinybsd.basefiles | grep -v "#" | grep ":"`; do
		SOURCE_FILE=`echo $i | awk -F ":" {'print $1'}`
		TARGET_FILE=`echo $i | awk -F ":" {'print $2'}`
		chroot ${WORKDIR} /bin/ln -vs /${SOURCE_FILE} ${TARGET_FILE}
	done
#set +xv
}


create_image() {
	#set -ex

	VNODEFILE=`mktemp -t tinybsd`
	IMGMNT=`mktemp -d -t tinybsd`

	dd if=/dev/zero of=${VNODEFILE} count=${SECTUNIT}

	MD=`mdconfig -a -t vnode -f ${VNODEFILE} -x ${SECTRACK} -y ${TRACKCYL}`

	diskinfo -v /dev/${MD}

	fdisk -I /dev/${MD}
	fdisk /dev/${MD}

	cp -p /boot/boot0 ${WORKDIR}/boot/boot0
	bsdlabel -w -B /dev/${MD}
	newfs -O2 -U /dev/${MD}a

	mount /dev/${MD}a ${IMGMNT}

	( cd ${WORKDIR} && find . -print | cpio -dump ${IMGMNT} ) || true

	df ${IMGMNT}
	umount ${IMGMNT}

	dd if=/dev/${MD} of=${CURRENTDIR}/${IMG} bs=64k

	rm -vf ${VNODEFILE}
	rm -rvf ${IMGMNT}
	mdconfig -d -u ${MD}
}

##########################
# run things
prework
check_conf
check_alt_imgname
create_tree
copy_binaries
make_kernel
copy_libraries
symlinks
create_etc
personal_directories
create_image
#set +xv