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|
#!/bin/sh -
# $Id$
#
# Create a chroot jail for rcynic.
#
# This is approximately what a pkg-install script might do if this were
# a FreeBSD port. Perhaps some day it will be.
: ${jaildir="/var/rcynic"}
: ${jailuser="rcynic"}
: ${jailgroup="rcynic"}
: ${setupcron="NO"}
echo "Setting up \"${jaildir}\" as a chroot jail for rcynic."
if /usr/sbin/pw groupshow "${jailgroup}" 2>/dev/null; then
echo "You already have a group \"${jailgroup}\", so I will use it."
elif /usr/sbin/pw groupadd ${jailgroup}; then
echo "Added group \"${jailgroup}\"."
else
echo "Adding group \"${jailgroup}\" failed..."
echo "Please create it, then try again."
exit 1
fi
if /usr/sbin/pw usershow "${jailuser}" 2>/dev/null; then
echo "You already have a user \"${jailuser}\", so I will use it."
elif /usr/sbin/pw useradd ${jailuser} -g ${jailgroup} -h - -d /nonexistant -s /usr/sbin/nologin -c "RPKI validation system"; then
echo "Added user \"${jailuser}\"."
else
echo "Adding user \"${jailuser}\" failed..."
echo "Please create it, then try again."
exit 1
fi
if ! /bin/test -d "${jaildir}"; then
/bin/mkdir "${jaildir}"
fi
if /usr/bin/install -m 555 -o root -g wheel -p rc.d.rcynic /usr/local/etc/rc.d/rcynic; then
echo "Installed rc.d.rcynic as /usr/local/etc/rc.d/rcynic"
else
echo "Installing /usr/local/etc/rc.d/rcynic failed"
exit 1
fi
echo "Running /usr/local/etc/rc.d/rcynic to set up directories"
if ! rcynic_jaildir="$jaildir" rcynic_user="$jailuser" rcynic_group="$jailgroup" /bin/sh /usr/local/etc/rc.d/rcynic start; then
echo "Directory setup failed"
exit 1
fi
if /bin/test -r "$jaildir/etc/rcynic.conf"; then
echo "You already have config file \"${jaildir}/etc/rcynic.conf\", so I will use it."
elif /usr/bin/install -m 444 -o root -g wheel -p rcynic.conf "${jaildir}/etc/rcynic.conf"; then
echo "Installed minimal ${jaildir}/etc/rcynic.conf, adding SAMPLE trust anchors"
for i in ../../sample-trust-anchors/*.cer; do
j="$jaildir/etc/trust-anchors/${i##*/}"
/bin/test -r "$i" || continue
/bin/test -r "$j" && continue
echo "Installing $i as $j"
/usr/bin/install -m 444 -o root -g wheel -p "$i" "$j"
done
j=1
for i in $jaildir/etc/trust-anchors/*.cer; do
echo >>"${jaildir}/etc/rcynic.conf" "trust-anchor.$j = /etc/trust-anchors/${i##*/}"
j=$((j+1))
done
else
echo "Installing minimal ${jaildir}/etc/rcynic.conf failed"
exit 1
fi
echo "Installing rcynic as ${jaildir}/bin/rcynic"
/usr/bin/install -m 555 -o root -g wheel -p ../../rcynic "${jaildir}/bin/rcynic"
if /bin/test ! -x "$jaildir/bin/rsync" -a ! -x ../../static-rsync/rsync; then
echo "Building static rsync for jail, this may take a little while"
(cd ../../static-rsync && exec make)
fi
if /bin/test -x "$jaildir/bin/rsync"; then
echo "You already have an executable \"$jaildir/bin/rsync\", so I will use it"
elif /usr/bin/install -m 555 -o root -g wheel -p ../../static-rsync/rsync "${jaildir}/bin/rsync"; then
echo "Installed static rsync as \"${jaildir}/bin/rsync\""
else
echo "Installing static rsync failed"
exit 1
fi
if /usr/bin/install -m 444 -o root -g wheel -p ../../rcynic.xsl "${jaildir}/etc/rcynic.xsl"; then
echo "Installed rcynic.xsl as \"${jaildir}/etc/rcynic.xsl\""
else
echo "Installing rcynic.xsl failed"
exit 1
fi
echo "Setting up root's crontab to run jailed rcynic"
case "$setupcron" in
YES|yes)
/usr/bin/crontab -l -u root 2>/dev/null |
/usr/bin/awk -v "jailuser=$jailuser" -v "jailgroup=$jailgroup" -v "jaildir=$jaildir" '
BEGIN {
cmd = "exec /usr/sbin/chroot -u " jailuser " -g " jailgroup " " jaildir;
cmd = cmd " /bin/rcynic -c /etc/rcynic.conf";
}
$0 !~ cmd {
print;
}
END {
"/usr/bin/hexdump -n 2 -e \"\\\"%u\\\\\\n\\\"\" /dev/random" | getline;
printf "%u * * * *\t%s\n", $1 % 60, cmd;
}' |
/usr/bin/crontab -u root -
/bin/cat <<EOF
crontab is set up to run rcynic hourly, at a randomly selected
minute (to spread load on the rsync servers). Please do NOT
adjust this to run on the hour. In particular please do NOT
adjust this to run at midnight UTC.
EOF
;;
*)
/bin/cat <<EOF
You'll need to add a crontab entry running the following command as root:
/usr/sbin/chroot -u $jailuser -g $jailgroup $jaildir /bin/rcynic -c /etc/rcynic.conf
Please try to pick a random time for this, don't just run it on the hour,
or at local midnight, or, worst of all, at midnight UTC.
EOF
;;
esac
/bin/cat <<EOF
Jail set up. You may need to customize $jaildir/etc/rcynic.conf.
If you did not install your own trust anchors, a default set
of SAMPLE trust anchors may have been installed for you, but
you, the relying party, are the only one who can decide
whether you trust those anchors. rcynic will not do anything
useful without good trust anchors.
EOF
|
