/mandos/trunk

#!/bin/sh

#

# This is an example hook script.  It will be run by 'mkinitramfs'

# when it creates the image.  It's job is to decide which files to

# install, then install them into the staging area, where the

# initramfs is being created.  This happens when a new 'linux-image'

# package is installed, or when the administrator runs 'mkinitramfs'

# by hand to update an initramfs image.

#

# TODO: What about the case where you install something that should be

#	added to the initramfs, but the linux-image it relates to has

#	already been installed previously?  Does this happen often

#	enough that it needs to be handled?  How can it be handled?

#

#	* Think about the 'usplash'.  The initramfs will need to be

#	 updated if a theme change or update is desired.  Maybe it

#	 should not be totally automatic, but offered on upgrade

#	 predicated on a user response to a debconf question?  That

#	 issue needs to be explored and a solution specified.

#

#  * Do not assume that any needed subdirectories have been created

#	yet, but don't bail out if they are already there.

#

#  * All of the standard system tools are available, of course, since

#	this hook is running in the real system, not the initramfs.

#

#  * TODO: ... ?  Anything else to tell them in this bullet-list?

#

#

# The environment contains at least:

#

#  CONFDIR -- usually /etc/mkinitramfs, can be set on mkinitramfs

#		 command line.

#

#  DESTDIR -- The staging directory where we are building the image.

#

# TODO: Decide what environment variables are meaningful and defined

#	in this context, then document them as part of the interface.

#

# TODO: May need a version_compare function for comparison of VERSION?

#

# List the soft prerequisites here.  This is a space separated list of

# names, of scripts that are in the same directory as this one, that

# must be run before this one can be.

#

PREREQ="cryptroot"

prereqs()

{

	echo "$PREREQ"

}

case $1 in

# get pre-requisites

prereqs)

	prereqs

	exit 0

	;;

esac

# You can do anything you need to from here on.

#

# Source the optional 'hook-functions' scriptlet, if you need the

# functions defined within it.  Read it to see what is available to

# you.  It contains functions for copying dynamically linked program

# binaries, and kernel modules into the DESTDIR.

#

. /usr/share/initramfs-tools/hook-functions

auto_add_modules net

# force_load tg3

force_load ipv6

CONFDIR="/conf/conf.d/mandos"

DESTCONFDIR="${DESTDIR}${CONFDIR}"

mkdir --parents "${DESTCONFDIR}"

PLUGINDIR="${CONFDIR}/plugins.d"

mkdir --parents "${DESTDIR}${PLUGINDIR}"

# We don't need to copy_exec mandos-client, hooks/cryptroot will do

# that.  That will not copy the plugins, however, so we do that here.

# The standard plugins

for file in /usr/lib/mandos/plugins.d/*; do

    base="`basename \"$file\"`"

    # Is this plugin overridden?

    if [ -e "/etc/mandos/plugins.d/$base" ]; then

	continue

    fi

    case "$base" in

	*~|.*|\#*\#|*.dpkg-old|*.dpkg-new|*.dpkg-divert) : ;;

	*) copy_exec "$file" "${PLUGINDIR}";;

    esac

done

# Any user-supplied plugins

for file in /etc/mandos/plugins.d/*; do

    base="`basename \"$file\"`"

    case "$base" in

	*~|.*|*.dpkg-old|*.dpkg-new|*.dpkg-divert) : ;;

	*) copy_exec "$file" "${PLUGINDIR}";;

    esac

done

# GPGME needs /usr/bin/gpg

if [ -n "`ls \"${DESTDIR}\"/usr/lib/libgpgme.so* 2>/dev/null`" ]; then

    copy_exec /usr/bin/gpg

fi

# Key files

for file in /etc/mandos/*; do

    if [ -d "$file" ]; then

	continue

    fi

    cp --archive --sparse=always "$file" "${DESTCONFDIR}"

done

# Create key ring files

gpg --no-random-seed-file --quiet --batch --no-tty \

    --no-default-keyring --no-options --homedir "${DESTCONFDIR}" \

    --no-permission-warning --import-options import-minimal \

    --import "${DESTCONFDIR}/seckey.txt"

chown nobody "${DESTCONFDIR}/secring.gpg"

# /keyscripts/mandos-client will drop priviliges, but needs access to

# its plugin directory.  However, since almost all files in initrd

# have been created with umask 027, this opening of permissions is needed.

# 

# (The umask is not really intended to affect the files inside the

# initrd, but the initrd.img file itself, since it now contains secret

# key files.  There is, however, no other way to set the permission of

# the initrd.img file without a race condition. This umask is set by

# "/usr/share/initramfs-tools/conf-hooks.d/mandos".)

# 

full="${PLUGINDIR}"

while [ "$full" != "/" ]; do

    chmod a+rX "${DESTDIR}$full"

    full="`dirname \"$full\"`"

done

for dir in / /bin /etc /keyscripts /sbin /scripts /usr /usr/bin; do

    chmod a+rX "${DESTDIR}$dir"

done

for dir in /lib /usr/lib; do

    chmod --recursive a+rX "${DESTDIR}$dir"

done