444 lines
12 KiB
Bash
Executable File
444 lines
12 KiB
Bash
Executable File
#!/bin/sh
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#
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# ----------------------------------------------------------------------
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# Copyright (c) 1999, 2000, 20001, 2004, 2005, NOVELL (All rights reserved)
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of version 2 of the GNU General Public
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# License published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, contact Novell, Inc.
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# ----------------------------------------------------------------------
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# rc.subdomain.functions by Steve Beattie
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# Modified for Gentoo Linux, by Matthew Snelham
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#
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# Modifications Copyright 1999-2006 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Header: $
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# NOTE: rc.subdomain initscripts that source this file need to implement
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# the following set of functions:
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# sd_action
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# sd_log_info_msg
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# sd_log_success_msg
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# sd_log_warning_msg
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# sd_log_failure_msg
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CONFIG_DIR=/etc/apparmor
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MODULE=apparmor
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OLD_MODULE=subdomain
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if [ -f "${CONFIG_DIR}/${MODULE}.conf" ] ; then
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APPARMOR_CONF="${CONFIG_DIR}/${MODULE}.conf"
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elif [ -f "${CONFIG_DIR}/${OLD_MODULE}.conf" ] ; then
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APPARMOR_CONF="${CONFIG_DIR}/${OLD_MODULE}.conf"
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else
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sd_log_warning_msg "Unable to find config file in ${CONFIG_DIR}, installation problem?"
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fi
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# Read configuration options from ${APPARMOR_CONF}, default is to
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# warn if subdomain won't load.
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APPARMOR_MODULE_PANIC="warn"
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SUBDOMAIN_ENABLE_OWLSM="no"
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APPARMOR_ENABLE_AAEVENTD="no"
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if [ -f "${APPARMOR_CONF}" ] ; then
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source "${APPARMOR_CONF}"
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fi
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if [ -f /sbin/apparmor_parser ] ; then
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PARSER=/sbin/apparmor_parser
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else
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sd_log_failure_msg "Unable to find apparmor_parser, installation problem?"
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exit 1
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fi
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# APPARMOR_DIR might be redefined in ${APPARMOR_CONF}
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if [ -d "${APPAMROR_DIR}" ] ; then
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PROFILE_DIR=${APPARMOR_DIR}
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elif [ -d /etc/apparmor.d ] ; then
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PROFILE_DIR=/etc/apparmor.d
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fi
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ABSTRACTIONS="-I${PROFILE_DIR}"
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AA_EV_BIN=/usr/sbin/aa-eventd
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AA_EV_PIDFILE=/var/run/aa-eventd.pid
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AA_STATUS=/usr/sbin/apparmor_status
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SD_EV_BIN=/usr/sbin/sd-event-dispatch.pl
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SD_EV_PIDFILE=/var/run/sd-event-dispatch.init.pid
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SD_STATUS=/usr/sbin/subdomain_status
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if grep -q securityfs /proc/filesystems ; then
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SECURITYFS=/sys/kernel/security
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fi
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SUBDOMAINFS_MOUNTPOINT=$(grep subdomainfs /etc/fstab | \
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sed -e 's|^[[:space:]]*[^[:space:]]\+[[:space:]]\+\(/[^[:space:]]*\)[[:space:]]\+subdomainfs.*$|\1|' 2> /dev/null)
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if [ -d "/var/lib/${MODULE}" ] ; then
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APPARMOR_TMPDIR="/var/lib/${MODULE}"
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else
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APPARMOR_TMPDIR="/tmp"
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fi
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function parse_profiles() {
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# get parser arg
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case "$1" in
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load)
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PARSER_ARGS="--add"
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PARSER_MSG="Loading AppArmor profiles "
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;;
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reload)
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PARSER_ARGS="--replace"
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PARSER_MSG="Reloading AppArmor profiles "
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;;
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*)
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exit 1
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;;
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esac
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sd_log_info_msg "$PARSER_MSG"
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# run the parser on all of the apparmor profiles
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if [ ! -f "$PARSER" ]; then
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sd_log_failure_msg "$PARSER_MSG - AppArmor parser not found"
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exit 1
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fi
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if [ ! -d "$PROFILE_DIR" ]; then
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sd_log_failure_msg "$PARSER_MSG - Profile directory not found"
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exit 1
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fi
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if [ "X" == "X$(ls $PROFILE_DIR/)" ]; then
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sd_log_warning_msg "$PARSER_MSG - No profiles found"
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exit 1
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fi
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for profile in $PROFILE_DIR/*; do
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if [ "${profile%.rpmnew}" != "${profile}" -o \
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"${profile%.rpmsave}" != "${profile}" -o \
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"${profile%\~}" != "${profile}" ]
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then
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sd_log_warning_msg "Skipping profile $profile"
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elif [ -f "${profile}" ] ; then
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sd_action " Adding profile: `basename ${profile}`" $PARSER $ABSTRACTIONS $PARSER_ARGS ${profile}
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if [ $? -ne 0 ]; then
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waserror=1
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fi
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fi
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done
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}
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function profiles_names_list() {
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# run the parser on all of the apparmor profiles
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TMPFILE=$1
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if [ ! -f "$PARSER" ]; then
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sd_log_failure_msg "AppArmor parser ($PARSER) not found"
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exit 1
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fi
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if [ ! -d "$PROFILE_DIR" ]; then
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sd_log_failure_msg "Profile directory ($PROFILE_DIR) not found"
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exit 1
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fi
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for profile in $PROFILE_DIR/*; do
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if [ "${profile%.rpmnew}" != "${profile}" -o \
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"${profile%.rpmsave}" != "${profile}" -o \
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"${profile%\~}" != "${profile}" ]
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then
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echo "nop" >/dev/null
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elif [ -f "${profile}" ] ; then
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LIST_ADD=$($PARSER $ABSTRACTIONS -N "$profile" | grep -v '\^')
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if [ $? -eq 0 ]; then
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echo "$LIST_ADD" >>$TMPFILE
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fi
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fi
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done
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}
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function is_securityfs_mounted() {
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if grep -q securityfs /proc/filesystems && grep -q securityfs /proc/mounts ; then
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if [ -f "${SECURITYFS}/${MODULE}/profiles" ]; then
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SFS_MOUNTPOINT="${SECURITYFS}/${MODULE}"
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return 0
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fi
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fi
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return 1
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}
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function mount_securityfs() {
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if [ "X" != "X${SECURITYFS}" ]; then
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if ! grep -q securityfs /proc/mounts ; then
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sd_action "Mounting securityfs on ${SECURITYFS}" \
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mount -t securityfs securityfs "${SECURITYFS}"
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rc=$?
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if [ -f "${SECURITYFS}/${MODULE}/profiles" ]; then
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SFS_MOUNTPOINT="${SECURITYFS}/${MODULE}"
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else
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SFS_MOUNTPOINT="${SECURITYFS}/${MODULE}"
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fi
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return $rc
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fi
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fi
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return 0
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}
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function unmount_securityfs() {
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SUBDOMAINFS=$(grep subdomainfs /proc/mounts | cut -d" " -f2 2> /dev/null)
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if [ "X" != "X${SUBDOMAINFS}" ]; then
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sd_action "Unmounting securityfs" umount ${SUBDOMAINFS}
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fi
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}
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function failstop_system() {
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level=$(runlevel | cut -d" " -f2)
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if [ $level -ne "1" ] ; then
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sd_log_failure_msg "Could not start AppArmor. Changing to runlevel 1"
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telinit 1;
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return -1;
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fi
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sd_log_failure_msg "Could not start AppArmor."
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return -1
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}
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function module_panic() {
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# the module failed to load, determine what action should be taken
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case "$APPARMOR_MODULE_PANIC" in
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"warn"|"WARN") sd_log_failure_msg "Could not start AppArmor"
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return -1 ;;
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"panic"|"PANIC") failstop_system
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rc=$?
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return $rc ;;
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*) sd_log_failure_msg "Invalid AppArmor module fail option"
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return -1 ;;
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esac
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}
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function load_module() {
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if modinfo -F filename apparmor > /dev/null 2>&1 ; then
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MODULE=apparmor
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elif modinfo -F filename subdomain > /dev/null 2>&1 ; then
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MODULE=subdomain
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fi
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if ! grep -qE "^(subdomain|apparmor)[[:space:]]" /proc/modules ; then
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sd_action "Loading AppArmor module" /sbin/modprobe $MODULE $1
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rc=$?
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if [ $rc -ne 0 ] ; then
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# we couldn't find the module
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module_panic
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rc=$?
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if [ $rc -ne 0 ] ; then
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exit $rc
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fi
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fi
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fi
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}
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function start_sd_event() {
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if [ -x "$AA_EV_BIN" -a "${APPARMOR_ENABLE_AAEVENTD}" = "yes" ] ; then
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sd_action "Starting AppArmor Event daemon" startproc -f -p $AA_EV_PIDFILE $AA_EV_BIN -p $AA_EV_PIDFILE
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elif [ -x "$SD_EV_BIN" -a "${APPARMOR_ENABLE_AAEVENTD}" = "yes" ] ; then
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sd_action "Starting AppArmor Event daemon" startproc -f -p $SD_EV_PIDFILE $SD_EV_BIN -p $SD_EV_PIDFILE
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fi
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}
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function stop_sd_event() {
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if [ -x "$AA_EV_BIN" -a -f "$AA_EV_PIDFILE" ] ; then
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sd_action "Shutting down AppArmor Event daemon" killproc -G -p $AA_EV_PIDFILE -INT $AA_EV_BIN
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fi
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if [ -f "$SD_EV_PIDFILE" ] ; then
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sd_action "Shutting down AppArmor Event daemon" killproc -G -p $SD_EV_PIDFILE -INT $SD_EV_BIN
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fi
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}
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function subdomain_start() {
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if ! grep -qE "^(subdomain|apparmor)[[:space:]]" /proc/modules ; then
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load_module
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rc=$?
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if [ $rc -ne 0 ] ; then
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return $rc
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fi
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fi
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if ! is_securityfs_mounted ; then
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mount_securityfs
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rc=$?
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if [ $rc -ne 0 ] ; then
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return $rc
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fi
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fi
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if [ ! -w "$SFS_MOUNTPOINT/.load" ] ; then
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sd_log_failure_msg "Loading AppArmor profiles - failed, Do you have the correct privileges?"
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return 1
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fi
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configure_owlsm
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if [ $(wc -l "$SFS_MOUNTPOINT/profiles" | awk '{print $1}') -eq 0 ] ; then
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parse_profiles load
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else
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sd_log_warning_msg "Loading AppArmor profiles - AppArmor already loaded with profiles."
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fi
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}
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function remove_profiles() {
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# removing profiles as we directly read from subdomainfs
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# doesn't work, since we are removing entries which screws up
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# our position. Lets hope there are never enough profiles to
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# overflow the variable
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if ! is_securityfs_mounted ; then
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sd_log_failure_msg "failed: is securityfs loaded?"
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return 1
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fi
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if [ ! -w "$SFS_MOUNTPOINT/.remove" ] ; then
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sd_log_failure_msg "failed: Do you have the correct privileges?"
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return 1
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fi
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if [ ! -x "${PARSER}" ] ; then
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sd_log_failure_msg "failed: unable to execute subdomain parser"
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return 1
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fi
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retval=0
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IFS=$'\n'
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enforced_profiles=$(sed -e "s/ (\(enforce\|complain\))$//" "$SFS_MOUNTPOINT/profiles")
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for profile in $enforced_profiles ; do
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sd_action " Removing profile: ${profile}" sh -c "echo \"$profile { }\" | $PARSER -R"
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rc=$?
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if [ ${rc} -ne 0 ] ; then
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retval=${rc}
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fi
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done
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if [ ${retval} -ne 0 ] ; then
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waserror=1
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fi
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}
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function subdomain_stop() {
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stop_sd_event
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sd_log_info_msg "Unloading AppArmor profiles"
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remove_profiles
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}
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function subdomain_kill() {
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stop_sd_event
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unmount_securityfs
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if grep -qE "^apparmor[[:space:]]" /proc/modules ; then
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MODULE=apparmor
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elif grep -qE "^subdomain[[:space:]]" /proc/modules ; then
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MODULE=subdomain
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else
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MODULE=apparmor
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fi
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sd_action "Unloading AppArmor modules" /sbin/modprobe -r $MODULE
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}
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function __subdomain_restart() {
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if [ ! -w "$SFS_MOUNTPOINT/.load" ] ; then
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sd_log_failure_msg "Loading AppArmor profiles - failed, Do you have the correct privileges?"
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return 4
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fi
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configure_owlsm
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parse_profiles reload
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PNAMES_LIST=$(mktemp ${APPARMOR_TMPDIR}/tmp.XXXXXXXX)
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profiles_names_list ${PNAMES_LIST}
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MODULE_PLIST=$(mktemp ${APPARMOR_TMPDIR}/tmp.XXXXXXXX)
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sed -e "s/ (\(enforce\|complain\))$//" "$SFS_MOUNTPOINT/profiles" | sort >"$MODULE_PLIST"
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#profiles=$(cat $PNAMES_LIST | sort | comm -2 -3 "$MODULE_PLIST" -)
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#for profile in $profiles ; do
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IFS=$'\n' && for profile in $(cat $PNAMES_LIST | sort | comm -2 -3 "$MODULE_PLIST" -) ; do
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echo "\"$profile\" {}" | $PARSER -R >/dev/null
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done
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rm "$MODULE_PLIST"
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rm "$PNAMES_LIST"
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return 0
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}
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function subdomain_restart() {
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if ! grep -qE "^(subdomain|apparmor)[[:space:]]" /proc/modules ; then
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subdomain_start
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rc=$?
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return $rc
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fi
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if ! is_securityfs_mounted ; then
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mount_securityfs
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rc=$?
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if [ $rc -ne 0 ] ; then
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return $rc
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fi
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fi
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__subdomain_restart
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rc=$?
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return $rc
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}
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function subdomain_try_restart() {
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if ! grep -qE "^(subdomain|apparmor)[[:space:]]" /proc/modules ; then
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return 1
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fi
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if ! is_securityfs_mounted ; then
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return 1
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fi
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__subdomain_restart
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rc=$?
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return $rc
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}
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function subdomain_debug() {
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subdomain_kill
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load_module "subdomain_debug=1"
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mount_securityfs
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configure_owlsm
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parse_profiles load
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}
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function configure_owlsm () {
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if [ "${SUBDOMAIN_ENABLE_OWLSM}" = "yes" -a -f ${SFS_MOUNTPOINT}/control/owlsm ] ; then
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# Sigh, the "sh -c" is necessary for the SuSE sd_action
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# and it can't be abstracted out as a seperate function, as
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# that breaks under RedHat's action, which needs a
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# binary to invoke.
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sd_action "Enabling OWLSM extension" sh -c "echo -n \"1\" > \"${SFS_MOUNTPOINT}/control/owlsm\""
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elif [ -f "${SFS_MOUNTPOINT}/control/owlsm" ] ; then
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sd_action "Disabling OWLSM extension" sh -c "echo -n \"0\" > \"${SFS_MOUNTPOINT}/control/owlsm\""
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fi
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}
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function subdomain_status () {
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if test -x ${AA_STATUS} ; then
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${AA_STATUS} --verbose
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return $?
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fi
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if test -x ${SD_STATUS} ; then
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${SD_STATUS} --verbose
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return $?
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fi
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if ! grep -qE "^(subdomain|apparmor)[[:space:]]" /proc/modules ; then
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sd_log_failure_msg "AppArmor not loaded."
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rc=1
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else
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sd_log_success_msg "AppArmor module enabled."
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rc=0
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fi
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sd_log_warning_msg "Install the apparmor-utils package to receive more detailed"
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sd_log_warning_msg "status information here (or examine ${SFS_MOUNTPOINT} directly)."
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return $rc
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}
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