#!/bin/bash

# Detect distribution
distro="fedora"
if [ -r /etc/redhat-release ]; then
	tmp=`cat /etc/redhat-release`
	if [ "${tmp:0:41}" = "Red Hat Enterprise Linux Server release 6" ]; then
		distro="redhat6"
	fi
fi
echo "distro=${distro}"

if [ -z "${selinux_variants}" ]; then
	selinux_variants="mls targeted minimum"
fi

if [ -z "${PRJ}" ]; then
	PRJ="rocketgit"
fi

# test if we need to rebuild the policy
last_mod=`stat --format=%Y ${PRJ}.{te.tmpl,if,fc} ${distro}.sed | sort -r -n | head -n 1`

if [ -r "out/done-${distro}" ]; then
	last_done=`stat --format=%Y out/done-${distro}`
else
	last_done="0"
fi

if [ "${last_done}" -gt ${last_mod} ]; then
	echo "No need to rebuild SELinux policy."
	exit 0
fi

# Different distribution = different gen_require/rules

# Do the replacements
sed -f ${distro}.sed rocketgit.te.tmpl > rocketgit.te

# Destroy extra stuff
sed -i -e 's/@@.*@@//' rocketgit.te

for type in ${selinux_variants}; do
	make NAME=${type} -f /usr/share/selinux/devel/Makefile
	mkdir -p out
	mv ${PRJ}.pp out/${PRJ}-${type}.pp
	make NAME=${type} -f /usr/share/selinux/devel/Makefile clean
done

# Hard link identical policies (thanks, crossfire)
/usr/bin/hardlink -cv out

touch out/done