#!/bin/sh
# $Revision: 284 $
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# (c) Tim Brown, 2012
# <mailto:timb@nth-dimension.org.uk>
# <http://www.nth-dimension.org.uk/> / <http://www.machine.org.uk/>
#
# Check for writable permission on home directories

. lib/misc/file
. lib/misc/group
. lib/misc/passwd
. lib/misc/permission
. lib/misc/stdio

homedirs_writable_init () {
	stdio_message_log "homedirs_writable" "Starting at: `date`"
}

homedirs_writable_main () {
	passwd_list | while read username
	do
		if [ "${username}" = "+" ]
		then
			continue
		fi
		homedir="`passwd_show_homedir "${username}"`"
		if [ -z "${homedir}" -o "${homedir}" = "/dev/null" ]
		then
			stdio_message_debug "homedirs_writable" "${username} has no home directory set"
			continue
		fi
		file_show_non_symlink_perms " ${homedir}$" | while read filename permissions userid groupid
		do
			case "${permissions}" in
				????????w?)
					if [ "`permission_is_world_writable_sticky_bit \"${permissions}\"`" -eq 1 ]
					then
						stdio_message_log "homedirs_writable" "${username} home directory ${filename} is owned by user ${userid} (group ${groupid}) and is world-writable with sticky bit (${permissions})"
					else
						stdio_message_warn "homedirs_writable" "${username} home directory ${filename} is owned by user ${userid} (group ${groupid}) and is world-writable (${permissions})"
					fi
					;;
				?????w????)
					if [ "`group_is_in_group_name \"${groupid}\"`" -eq 1 ]
					then
						stdio_message_warn "homedirs_writable" "${username} home directory ${filename} is owned by user ${userid} (group ${groupid}: YOU) and is group-writable (${permissions})"
					# TODO verify the case the owner, ${username}, is not within the group owner, ${groupid}
					else
						stdio_message_debug "homedirs_writable" "${username} home directory ${filename} is owned by user ${userid} (group ${groupid}) and is group-writable (${permissions})"
					fi
					;;
			esac
		done
	done
}

homedirs_writable_fini () {
	stdio_message_log "homedirs_writable" "Ending at: `date`"
}