mirror of
https://gitlab.com/shorewall/code.git
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f9685d5ddd
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@4369 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
2259 lines
49 KiB
Bash
2259 lines
49 KiB
Bash
#!/bin/sh
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#
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# Shorewall 3.2 -- /usr/share/shorewall/functions
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#
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# This program is under GPL [http://www.gnu.org/copyleft/gpl.htm]
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#
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# (c) 1999,2000,2001,2002,2003,2004,2005,2006 - Tom Eastep (teastep@shorewall.net)
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#
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# tcstart from tc4shorewall Version 0.5
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# (c) 2005 Arne Bernin <arne@ucbering.de>
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# Modified by Tom Eastep for integration into the Shorewall distribution
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# published under GPL Version 2#
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#
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# Complete documentation is available at http://shorewall.net
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of Version 2 of the GNU General Public License
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# as 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, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA
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LIBVERSION=30192
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[ -n "${VARDIR:=/var/lib/shorewall}" ]
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[ -n "${SHAREDIR:=/usr/share/shorewall}" ]
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[ -n "${CONFDIR:=/etc/shorewall}" ]
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#
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# Message to stderr
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#
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error_message() # $* = Error Message
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{
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echo " $@" >&2
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}
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# Function to truncate a string -- It uses 'cut -b -<n>'
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# rather than ${v:first:last} because light-weight shells like ash and
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# dash do not support that form of expansion.
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#
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truncate() # $1 = length
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{
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cut -b -${1}
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}
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#
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# Split a colon-separated list into a space-separated list
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#
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split() {
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local ifs=$IFS
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IFS=:
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set -- $1
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echo $*
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IFS=$ifs
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}
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#
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# Search a list looking for a match -- returns zero if a match found
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# 1 otherwise
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#
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list_search() # $1 = element to search for , $2-$n = list
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{
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local e=$1
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while [ $# -gt 1 ]; do
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shift
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[ "x$e" = "x$1" ] && return 0
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done
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return 1
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}
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#
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# Return a space separated list of values matching
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#
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list_walk() # $1 = element to search for, $2-$n = list
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{
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local e=$1 result=
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while [ $# -gt 1 ]; do
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shift
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case $1 in
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$e*)
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result="$result ${1##$e}"
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;;
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esac
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done
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echo $result
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}
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#
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# Functions to count list elements
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# - - - - - - - - - - - - - - - -
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# Whitespace-separated list
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#
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list_count1() {
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echo $#
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}
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#
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# Comma-separated list
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#
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list_count() {
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list_count1 $(separate_list $1)
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}
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#
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# Conditionally produce message
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#
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progress_message() # $* = Message
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{
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local timestamp=
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if [ $VERBOSE -gt 1 ]; then
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[ -n "$TIMESTAMP" ] && timestamp="$(date +%H:%M:%S) "
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echo "${timestamp}$@"
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fi
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}
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progress_message2() # $* = Message
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{
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local timestamp=
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if [ $VERBOSE -gt 0 ]; then
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[ -n "$TIMESTAMP" ] && timestamp="$(date +%H:%M:%S) "
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echo "${timestamp}$@"
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fi
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}
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progress_message3() # $* = Message
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{
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local timestamp=
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if [ $VERBOSE -ge 0 ]; then
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[ -n "$TIMESTAMP" ] && timestamp="$(date +%H:%M:%S) "
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echo "${timestamp}$@"
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fi
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}
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#
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# Suppress all output for a command
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#
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qt()
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{
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"$@" >/dev/null 2>&1
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}
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#
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# Determine if Shorewall is "running"
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#
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shorewall_is_started() {
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qt $IPTABLES -L shorewall -n
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}
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#
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# Perform variable substitution on the passed argument and echo the result
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#
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expand() # $@ = contents of variable which may be the name of another variable
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{
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eval echo \"$@\"
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}
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#
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# Perform variable substitition on the values of the passed list of variables
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#
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expandv() # $* = list of variable names
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{
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local varval
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while [ $# -gt 0 ]; do
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eval varval=\$${1}
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eval $1=\"$varval\"
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shift
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done
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}
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#
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# Add whitespace after "!"
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#
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fix_bang()
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{
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local result=
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while [ $# -gt 0 ]; do
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case $1 in
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!*)
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result="$result ! ${1#!}"
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;;
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*)
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result="$result $1"
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;;
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esac
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shift
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done
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echo $result
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}
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#
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# Echos the fully-qualified name of the calling shell program
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#
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my_pathname() {
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cd $(dirname $0)
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echo $PWD/$(basename $0)
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}
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#
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# Set default config path
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#
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ensure_config_path() {
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local F=${SHAREDIR}/configpath
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if [ -z "$CONFIG_PATH" ]; then
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[ -f $F ] || { echo " ERROR: $F does not exist"; exit 2; }
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. $F
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fi
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}
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#
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# Find a File -- For relative file name, look first in $SHOREWALL_DIR then in ${CONFDIR}
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#
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find_file()
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{
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local saveifs= directory
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case $1 in
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/*)
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echo $1
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;;
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*)
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if [ -n "$SHOREWALL_DIR" -a -f $SHOREWALL_DIR/$1 ]; then
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echo $SHOREWALL_DIR/$1
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else
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saveifs=$IFS
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IFS=:
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for directory in $CONFIG_PATH; do
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if [ -f $directory/$1 ]; then
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echo $directory/$1
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IFS=$saveifs
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return
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fi
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done
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IFS=$saveifs
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echo ${CONFDIR}/$1
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fi
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;;
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esac
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}
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#
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# Get fully-qualified name of file
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#
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resolve_file() # $1 = file name
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{
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local pwd=$PWD
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case $1 in
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/*)
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echo $1
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;;
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./*)
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echo ${pwd}${1#.}
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;;
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../*)
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cd ..
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resolve_file ${1#../}
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cd $pwd
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;;
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*)
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echo $pwd/$1
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;;
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esac
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}
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##
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# Source a user exit file if it exists
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#
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run_user_exit() # $1 = file name
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{
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local user_exit=$(find_file $1)
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if [ -f $user_exit ]; then
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progress_message "Processing $user_exit ..."
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. $user_exit
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fi
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}
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#
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# Replace commas with spaces and echo the result
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#
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separate_list() {
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local list="$@"
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local part
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local newlist
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local firstpart
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local lastpart
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local enclosure
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case "$list" in
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*,|,*|*,,*|*[[:space:]]*)
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#
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# There's been whining about us not catching embedded white space in
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# comma-separated lists. This is an attempt to snag some of the cases.
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#
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# The 'TERMINATOR' function will be set by the 'firewall' script to
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# either 'startup_error' or 'fatal_error' depending on the command and
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# command phase
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#
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[ -n "$TERMINATOR" ] && \
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$TERMINATOR "Invalid comma-separated list \"$@\""
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echo "WARNING -- invalid comma-separated list \"$@\"" >&2
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;;
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*\[*\]*)
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#
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# Where we need to embed comma-separated lists within lists, we enclose them
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# within square brackets.
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#
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firstpart=${list%%\[*}
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lastpart=${list#*\[}
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enclosure=${lastpart%%\]*}
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lastpart=${lastpart#*\]}
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case $lastpart in
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\,*)
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case $firstpart in
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*\,)
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echo "$(separate_list ${firstpart%,}) [$enclosure] $(separate_list ${lastpart#,})"
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;;
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*)
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echo "$(separate_list $firstpart)[$enclosure] $(separate_list ${lastpart#,})"
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;;
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esac
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;;
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*)
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case $firstpart in
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*\,)
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echo "$(separate_list ${firstpart%,}) [$enclosure]$(separate_list $lastpart)"
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;;
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*)
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echo "$(separate_list $firstpart)[$enclosure]$(separate_list $lastpart)"
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;;
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esac
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;;
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esac
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return
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;;
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esac
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list="$@"
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part="${list%%,*}"
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newlist="$part"
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while [ "x$part" != "x$list" ]; do
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list="${list#*,}";
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part="${list%%,*}";
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newlist="$newlist $part";
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done
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echo "$newlist"
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}
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#
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# Undo the effect of 'separate_list()'
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#
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combine_list()
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{
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local f o=
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for f in $* ; do
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o="${o:+$o,}$f"
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done
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echo $o
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}
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#
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# Load a Kernel Module
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#
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loadmodule() # $1 = module name, $2 - * arguments
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{
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local modulename=$1
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local modulefile
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local suffix
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moduleloader=modprobe
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if ! qt mywhich modprobe; then
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moduleloader=insmod
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fi
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if ! list_search $modulename $MODULES ; then
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shift
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for suffix in $MODULE_SUFFIX ; do
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modulefile=$MODULESDIR/${modulename}.${suffix}
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if [ -f $modulefile ]; then
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case $moduleloader in
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insmod)
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insmod $modulefile $*
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;;
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*)
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modprobe $modulename $*
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;;
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esac
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MODULES=$(lsmod | cut -d ' ' -f1)
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break
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fi
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done
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fi
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}
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#
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# Reload the Modules
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#
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reload_kernel_modules() {
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[ -z "$MODULESDIR" ] && MODULESDIR=/lib/modules/$(uname -r)/kernel/net/ipv4/netfilter
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MODULES=$(lsmod | cut -d ' ' -f1)
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while read command; do
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eval $command
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done
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}
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#
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# Load kernel modules required for Shorewall
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#
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load_kernel_modules()
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{
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save_modules_dir=$MODULESDIR
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[ -z "$MODULESDIR" ] && \
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MODULESDIR=/lib/modules/$(uname -r)/kernel/net/ipv4/netfilter
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modules=$(find_file modules)
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if [ -f $modules -a -d $MODULESDIR ]; then
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MODULES=$(lsmod | cut -d ' ' -f1)
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progress_message "Loading Modules..."
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. $modules
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fi
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MODULESDIR=$save_modules_dir
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}
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#
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# Call this function to assert mutual exclusion with Shorewall. If you invoke the
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# /sbin/shorewall program while holding mutual exclusion, you should pass "nolock" as
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# the first argument. Example "shorewall nolock refresh"
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#
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# This function uses the lockfile utility from procmail if it exists.
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# Otherwise, it uses a somewhat race-prone algorithm to attempt to simulate the
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# behavior of lockfile.
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#
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mutex_on()
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{
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local try=0
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local lockf=${VARDIR}/lock
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MUTEX_TIMEOUT=${MUTEX_TIMEOUT:-60}
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if [ $MUTEX_TIMEOUT -gt 0 ]; then
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[ -d ${VARDIR} ] || mkdir -p ${VARDIR}
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if qt mywhich lockfile; then
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lockfile -${MUTEX_TIMEOUT} -r1 ${lockf}
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else
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while [ -f ${lockf} -a ${try} -lt ${MUTEX_TIMEOUT} ] ; do
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sleep 1
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try=$((${try} + 1))
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done
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if [ ${try} -lt ${MUTEX_TIMEOUT} ] ; then
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# Create the lockfile
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echo $$ > ${lockf}
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else
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echo "Giving up on lock file ${lockf}" >&2
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fi
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fi
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fi
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}
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#
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# Call this function to release mutual exclusion
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#
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mutex_off()
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{
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rm -f ${VARDIR}/lock
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}
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#
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# Determine which version of mktemp is present (if any) and set MKTEMP accortingly:
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#
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# None - No mktemp
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# BSD - BSD mktemp (Mandrake)
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# STD - mktemp.org mktemp
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#
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find_mktemp() {
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local mktemp=`mywhich mktemp 2> /dev/null`
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if [ -n "$mktemp" ]; then
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if qt mktemp -V ; then
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MKTEMP=STD
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else
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MKTEMP=BSD
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fi
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else
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MKTEMP=None
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fi
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}
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#
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# create a temporary file. If a directory name is passed, the file will be created in
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# that directory. Otherwise, it will be created in a temporary directory.
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#
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mktempfile() {
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[ -z "$MKTEMP" ] && find_mktemp
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if [ $# -gt 0 ]; then
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case "$MKTEMP" in
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BSD)
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mktemp $1/shorewall.XXXXXX
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;;
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STD)
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mktemp -p $1 shorewall.XXXXXX
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;;
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None)
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> $1/shorewall-$$ && echo $1/shorewall-$$
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;;
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*)
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error_message "ERROR:Internal error in mktempfile"
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;;
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esac
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else
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case "$MKTEMP" in
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BSD)
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mktemp /tmp/shorewall.XXXXXX
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;;
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STD)
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mktemp -t shorewall.XXXXXX
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;;
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None)
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rm -f /tmp/shorewall-$$
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> /tmp/shorewall-$$ && echo /tmp/shorewall-$$
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;;
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*)
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error_message "ERROR:Internal error in mktempfile"
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;;
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esac
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fi
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}
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#
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# create a temporary directory
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#
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mktempdir() {
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[ -z "$MKTEMP" ] && find_mktemp
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case "$MKTEMP" in
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STD)
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mktemp -td shorewall.XXXXXX
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;;
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None|BSD)
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#
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# Not all versions of the BSD mktemp support the -d option under Linux
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#
|
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qt rm -rf /tmp/shorewall-$$
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mkdir -p /tmp/shorewall-$$ && chmod 700 /tmp/shorewall-$$ && echo /tmp/shorewall-$$
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;;
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*)
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error_message "ERROR:Internal error in mktempdir"
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;;
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esac
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}
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|
#
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# Read a file and handle "INCLUDE" directives
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#
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|
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read_file() # $1 = file name, $2 = nest count
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{
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local first rest
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|
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if [ -f $1 ]; then
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while read first rest; do
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if [ "x$first" = "xINCLUDE" ]; then
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if [ $2 -lt 4 ]; then
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read_file $(find_file $(expand ${rest%#*})) $(($2 + 1))
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else
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error_message "WARNING: INCLUDE in $1 ignored (nested too deeply)"
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fi
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else
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echo "$first $rest"
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fi
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done < $1
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else
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[ -n "$TERMINATOR" ] && $TERMINATOR "No such file: $1"
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echo "WARNING -- No such file: $1"
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fi
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}
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|
|
#
|
|
# Function for including one file into another
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|
#
|
|
INCLUDE() {
|
|
. $(find_file $(expand $@))
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}
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|
|
|
#
|
|
# Strip comments and blank lines from a file and place the result in the
|
|
# temporary directory
|
|
#
|
|
strip_file() # $1 = Base Name of the file, $2 = Full Name of File (optional)
|
|
{
|
|
local fname
|
|
|
|
[ $# = 1 ] && fname=$(find_file $1) || fname=$2
|
|
|
|
if [ -f $fname ]; then
|
|
read_file $fname 0 | cut -d'#' -f1 | grep -v '^[[:space:]]*$' > $TMP_DIR/$1
|
|
else
|
|
> $TMP_DIR/$1
|
|
fi
|
|
}
|
|
|
|
#
|
|
# Note: The following set of IP address manipulation functions have anomalous
|
|
# behavior when the shell only supports 32-bit signed arithmatic and
|
|
# the IP address is 128.0.0.0 or 128.0.0.1.
|
|
#
|
|
|
|
LEFTSHIFT='<<'
|
|
|
|
|
|
#
|
|
# Convert an IP address in dot quad format to an integer
|
|
#
|
|
decodeaddr() {
|
|
local x
|
|
local temp=0
|
|
local ifs=$IFS
|
|
|
|
IFS=.
|
|
|
|
for x in $1; do
|
|
temp=$(( $(( $temp $LEFTSHIFT 8 )) | $x ))
|
|
done
|
|
|
|
echo $temp
|
|
|
|
IFS=$ifs
|
|
}
|
|
|
|
#
|
|
# convert an integer to dot quad format
|
|
#
|
|
encodeaddr() {
|
|
addr=$1
|
|
local x
|
|
local y=$(($addr & 255))
|
|
|
|
for x in 1 2 3 ; do
|
|
addr=$(($addr >> 8))
|
|
y=$(($addr & 255)).$y
|
|
done
|
|
|
|
echo $y
|
|
}
|
|
|
|
#
|
|
# Enumerate the members of an IP range -- When using a shell supporting only
|
|
# 32-bit signed arithmetic, the range cannot span 128.0.0.0.
|
|
#
|
|
# Comes in two flavors:
|
|
#
|
|
# ip_range() - produces a mimimal list of network/host addresses that spans
|
|
# the range.
|
|
#
|
|
# ip_range_explicit() - explicitly enumerates the range.
|
|
#
|
|
ip_range() {
|
|
local first last l x y z vlsm
|
|
|
|
case $1 in
|
|
!*)
|
|
#
|
|
# Let iptables complain if it's a range
|
|
#
|
|
echo $1
|
|
return
|
|
;;
|
|
[0-9]*.*.*.*-*.*.*.*)
|
|
;;
|
|
*)
|
|
echo $1
|
|
return
|
|
;;
|
|
esac
|
|
|
|
first=$(decodeaddr ${1%-*})
|
|
last=$(decodeaddr ${1#*-})
|
|
|
|
if [ $first -gt $last ]; then
|
|
fatal_error "Invalid IP address range: $1"
|
|
fi
|
|
|
|
l=$(( $last + 1 ))
|
|
|
|
while [ $first -le $last ]; do
|
|
vlsm=
|
|
x=31
|
|
y=2
|
|
z=1
|
|
|
|
while [ $(( $first % $y )) -eq 0 -a $(( $first + $y )) -le $l ]; do
|
|
vlsm=/$x
|
|
x=$(( $x - 1 ))
|
|
z=$y
|
|
y=$(( $y * 2 ))
|
|
done
|
|
|
|
echo $(encodeaddr $first)$vlsm
|
|
first=$(($first + $z))
|
|
done
|
|
}
|
|
|
|
ip_range_explicit() {
|
|
local first last
|
|
|
|
case $1 in
|
|
[0-9]*.*.*.*-*.*.*.*)
|
|
;;
|
|
*)
|
|
echo $1
|
|
return
|
|
;;
|
|
esac
|
|
|
|
first=$(decodeaddr ${1%-*})
|
|
last=$(decodeaddr ${1#*-})
|
|
|
|
if [ $first -gt $last ]; then
|
|
fatal_error "Invalid IP address range: $1"
|
|
fi
|
|
|
|
while [ $first -le $last ]; do
|
|
echo $(encodeaddr $first)
|
|
first=$(($first + 1))
|
|
done
|
|
}
|
|
|
|
#
|
|
# Netmask from CIDR
|
|
#
|
|
ip_netmask() {
|
|
local vlsm=${1#*/}
|
|
|
|
[ $vlsm -eq 0 ] && echo 0 || echo $(( -1 $LEFTSHIFT $(( 32 - $vlsm )) ))
|
|
}
|
|
|
|
#
|
|
# Network address from CIDR
|
|
#
|
|
ip_network() {
|
|
local decodedaddr=$(decodeaddr ${1%/*})
|
|
local netmask=$(ip_netmask $1)
|
|
|
|
echo $(encodeaddr $(($decodedaddr & $netmask)))
|
|
}
|
|
|
|
#
|
|
# The following hack is supplied to compensate for the fact that many of
|
|
# the popular light-weight Bourne shell derivatives don't support XOR ("^").
|
|
#
|
|
|
|
ip_broadcast() {
|
|
local x=$(( 32 - ${1#*/} ))
|
|
|
|
[ $x -eq 0 ] && echo -1 || echo $(( $(( 1 $LEFTSHIFT $x )) - 1 ))
|
|
}
|
|
|
|
#
|
|
# Calculate broadcast address from CIDR
|
|
#
|
|
broadcastaddress() {
|
|
local decodedaddr=$(decodeaddr ${1%/*})
|
|
local netmask=$(ip_netmask $1)
|
|
local broadcast=$(ip_broadcast $1)
|
|
|
|
echo $(encodeaddr $(( $(($decodedaddr & $netmask)) | $broadcast )))
|
|
}
|
|
|
|
#
|
|
# Test for network membership
|
|
#
|
|
in_network() # $1 = IP address, $2 = CIDR network
|
|
{
|
|
local netmask=$(ip_netmask $2)
|
|
|
|
test $(( $(decodeaddr $1) & $netmask)) -eq $(( $(decodeaddr ${2%/*}) & $netmask ))
|
|
}
|
|
|
|
#
|
|
# Netmask to VLSM
|
|
#
|
|
ip_vlsm() {
|
|
local mask=$(decodeaddr $1)
|
|
local vlsm=0
|
|
local x=$(( 128 << 24 )) # 0x80000000
|
|
|
|
while [ $(( $x & $mask )) -ne 0 ]; do
|
|
[ $mask -eq $x ] && mask=0 || mask=$(( $mask $LEFTSHIFT 1 )) # Not all shells shift 0x80000000 left properly.
|
|
vlsm=$(($vlsm + 1))
|
|
done
|
|
|
|
if [ $(( $mask & 2147483647 )) -ne 0 ]; then # 2147483647 = 0x7fffffff
|
|
echo "Invalid net mask: $1" >&2
|
|
else
|
|
echo $vlsm
|
|
fi
|
|
}
|
|
|
|
|
|
#
|
|
# Chain name base for an interface -- replace all periods with underscores in the passed name.
|
|
# The result is echoed (less trailing "+").
|
|
#
|
|
chain_base() #$1 = interface
|
|
{
|
|
local c=${1%%+}
|
|
|
|
while true; do
|
|
case $c in
|
|
*.*)
|
|
c="${c%.*}_${c##*.}"
|
|
;;
|
|
*-*)
|
|
c="${c%-*}_${c##*-}"
|
|
;;
|
|
*%*)
|
|
c="${c%\%*}_${c##*%}"
|
|
;;
|
|
*)
|
|
echo ${c:=common}
|
|
return
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
#
|
|
# Loosly Match the name of an interface
|
|
#
|
|
|
|
if_match() # $1 = Name in interfaces file - may end in "+"
|
|
# $2 = Full interface name - may also end in "+"
|
|
{
|
|
local pattern=${1%+}
|
|
|
|
case $1 in
|
|
*+)
|
|
test "x$(echo $2 | truncate ${#pattern} )" = "x${pattern}"
|
|
;;
|
|
*)
|
|
test "x$1" = "x$2"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
#
|
|
# Source IP range
|
|
#
|
|
source_ip_range() # $1 = Address or Address Range
|
|
{
|
|
[ $# -gt 0 ] && case $1 in
|
|
*.*.*.*-*.*.*.*)
|
|
case $1 in
|
|
!*)
|
|
iprange_echo "! --src-range ${1#!}"
|
|
;;
|
|
*)
|
|
iprange_echo "--src-range $1"
|
|
;;
|
|
esac
|
|
;;
|
|
!+*)
|
|
echo "-m set ! $(get_set_flags ${1#!} src)"
|
|
;;
|
|
+*)
|
|
echo "-m set $(get_set_flags $1 src)"
|
|
;;
|
|
*)
|
|
echo "-s $1"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
#
|
|
# Destination IP range
|
|
#
|
|
dest_ip_range() # $1 = Address or Address Range
|
|
{
|
|
[ $# -gt 0 ] && case $1 in
|
|
*.*.*.*-*.*.*.*)
|
|
case $1 in
|
|
!*)
|
|
iprange_echo "! --dst-range ${1#!}"
|
|
;;
|
|
*)
|
|
iprange_echo "--dst-range $1"
|
|
;;
|
|
esac
|
|
;;
|
|
!+*)
|
|
echo "-m set ! $(get_set_flags ${1#!} dst)"
|
|
;;
|
|
+*)
|
|
echo "-m set $(get_set_flags $1 dst)"
|
|
;;
|
|
*)
|
|
echo "-d $1"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
both_ip_ranges() # $1 = Source address or range, $2 = dest address or range
|
|
{
|
|
local rangeprefix= setprefix= rangematch= setmatch=
|
|
|
|
case $1 in
|
|
*.*.*.*-*.*.*.*)
|
|
rangeprefix="-m iprange"
|
|
rangematch="--src-range $1"
|
|
;;
|
|
!+*)
|
|
setprefix="-m set"
|
|
setmatch="! $(get_set_flags ${1#!} src)"
|
|
;;
|
|
+*)
|
|
setprefix="-m set"
|
|
setmatch="$(get_set_flags $1 src)"
|
|
;;
|
|
*)
|
|
rangematch="-s $1"
|
|
;;
|
|
esac
|
|
|
|
case $2 in
|
|
*.*.*.*-*.*.*.*)
|
|
rangeprefix="-m iprange"
|
|
rangematch="$rangematch --dst-range $2"
|
|
;;
|
|
!+*)
|
|
setprefix="-m set"
|
|
match="$setmatch ! $(get_set_flags ${2#!} dst)"
|
|
;;
|
|
+*)
|
|
setprefix="-m set"
|
|
setmatch="$setmatch $(get_set_flags $2 dst)"
|
|
;;
|
|
*)
|
|
rangematch="$rangematch -d $2"
|
|
;;
|
|
esac
|
|
|
|
echo "$rangeprefix $rangematch $setprefix $setmatch"
|
|
}
|
|
|
|
#
|
|
# Find the value 'dev' in the passed arguments then echo the next value
|
|
#
|
|
|
|
find_device() {
|
|
while [ $# -gt 1 ]; do
|
|
[ "x$1" = xdev ] && echo $2 && return
|
|
shift
|
|
done
|
|
}
|
|
|
|
#
|
|
# Find the value 'via' in the passed arguments then echo the next value
|
|
#
|
|
|
|
find_gateway() {
|
|
while [ $# -gt 1 ]; do
|
|
[ "x$1" = xvia ] && echo $2 && return
|
|
shift
|
|
done
|
|
}
|
|
|
|
#
|
|
# Find the value 'mtu' in the passed arguments then echo the next value
|
|
#
|
|
|
|
find_mtu() {
|
|
while [ $# -gt 1 ]; do
|
|
[ "x$1" = xmtu ] && echo $2 && return
|
|
shift
|
|
done
|
|
}
|
|
|
|
#
|
|
# Find the value 'peer' in the passed arguments then echo the next value up to
|
|
# "/"
|
|
#
|
|
|
|
find_peer() {
|
|
while [ $# -gt 1 ]; do
|
|
[ "x$1" = xpeer ] && echo ${2%/*} && return
|
|
shift
|
|
done
|
|
}
|
|
|
|
#
|
|
# Find the interfaces that have a route to the passed address - the default
|
|
# route is not used.
|
|
#
|
|
|
|
find_rt_interface() {
|
|
ip route ls | while read addr rest; do
|
|
case $addr in
|
|
*/*)
|
|
in_network ${1%/*} $addr && echo $(find_device $rest)
|
|
;;
|
|
default)
|
|
;;
|
|
*)
|
|
if [ "$addr" = "$1" -o "$addr/32" = "$1" ]; then
|
|
echo $(find_device $rest)
|
|
fi
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
#
|
|
# Try to find the gateway through an interface looking for 'nexthop'
|
|
|
|
find_nexthop() # $1 = interface
|
|
{
|
|
echo $(find_gateway `ip route ls | grep "[[:space:]]nexthop.* $1"`)
|
|
}
|
|
|
|
#
|
|
# Find the default route's interface
|
|
#
|
|
find_default_interface() {
|
|
ip route ls | while read first rest; do
|
|
[ "$first" = default ] && echo $(find_device $rest) && return
|
|
done
|
|
}
|
|
|
|
#
|
|
# Echo the name of the interface(s) that will be used to send to the
|
|
# passed address
|
|
#
|
|
|
|
find_interface_by_address() {
|
|
local dev="$(find_rt_interface $1)"
|
|
local first rest
|
|
|
|
[ -z "$dev" ] && dev=$(find_default_interface)
|
|
|
|
[ -n "$dev" ] && echo $dev
|
|
}
|
|
|
|
#
|
|
# Find the interface with the passed MAC address
|
|
#
|
|
|
|
find_interface_by_mac() {
|
|
local mac=$1 first second rest dev
|
|
|
|
ip link ls | while read first second rest; do
|
|
case $first in
|
|
*:)
|
|
dev=$second
|
|
;;
|
|
*)
|
|
if [ "$second" = $mac ]; then
|
|
echo ${dev%:}
|
|
return
|
|
fi
|
|
esac
|
|
done
|
|
}
|
|
|
|
#
|
|
# Find interface address--returns the first IP address assigned to the passed
|
|
# device
|
|
#
|
|
find_first_interface_address() # $1 = interface
|
|
{
|
|
#
|
|
# get the line of output containing the first IP address
|
|
#
|
|
addr=$(ip -f inet addr show $1 2> /dev/null | grep 'inet .* global' | head -n1)
|
|
#
|
|
# If there wasn't one, bail out now
|
|
#
|
|
[ -n "$addr" ] || fatal_error "Can't determine the IP address of $1"
|
|
#
|
|
# Strip off the trailing VLSM mask (or the peer IP in case of a P-t-P link)
|
|
# along with everything else on the line
|
|
#
|
|
echo $addr | sed 's/\s*inet //;s/\/.*//;s/ peer.*//'
|
|
}
|
|
|
|
find_first_interface_address_if_any() # $1 = interface
|
|
{
|
|
#
|
|
# get the line of output containing the first IP address
|
|
#
|
|
addr=$(ip -f inet addr show $1 2> /dev/null | grep 'inet .* global' | head -n1)
|
|
#
|
|
# Strip off the trailing VLSM mask (or the peer IP in case of a P-t-P link)
|
|
# along with everything else on the line
|
|
#
|
|
[ -n "$addr" ] && echo $addr | sed 's/\s*inet //;s/\/.*//;s/ peer.*//' || echo 0.0.0.0
|
|
}
|
|
|
|
#
|
|
# Find interface addresses--returns the set of addresses assigned to the passed
|
|
# device
|
|
#
|
|
find_interface_addresses() # $1 = interface
|
|
{
|
|
ip -f inet addr show $1 | grep inet\ | sed 's/\s*inet //;s/\/.*//;s/ peer.*//'
|
|
}
|
|
|
|
#
|
|
# echo the list of networks routed out of a given interface
|
|
#
|
|
get_routed_networks() # $1 = interface name
|
|
{
|
|
local address
|
|
local rest
|
|
|
|
ip route show dev $1 2> /dev/null |
|
|
while read address rest; do
|
|
if [ "x$address" = xdefault ]; then
|
|
error_message "WARNING: default route ignored on interface $1"
|
|
else
|
|
[ "$address" = "${address%/*}" ] && address="${address}/32"
|
|
echo $address
|
|
fi
|
|
done
|
|
}
|
|
|
|
#
|
|
# Internal version of 'which'
|
|
#
|
|
mywhich() {
|
|
local dir
|
|
|
|
for dir in $(split $PATH); do
|
|
if [ -x $dir/$1 ]; then
|
|
echo $dir/$1
|
|
return 0
|
|
fi
|
|
done
|
|
|
|
return 2
|
|
}
|
|
|
|
#
|
|
# Set the Shorewall state
|
|
#
|
|
set_state () # $1 = state
|
|
{
|
|
echo "$1 ($(date))" > ${VARDIR}/state
|
|
}
|
|
|
|
#
|
|
# Determine which optional facilities are supported by iptables/netfilter
|
|
#
|
|
determine_capabilities() {
|
|
qt $IPTABLES -t nat -L -n && NAT_ENABLED=Yes || NAT_ENABLED=
|
|
qt $IPTABLES -t mangle -L -n && MANGLE_ENABLED=Yes || MANGLE_ENABLED=
|
|
|
|
CONNTRACK_MATCH=
|
|
MULTIPORT=
|
|
XMULTIPORT=
|
|
POLICY_MATCH=
|
|
PHYSDEV_MATCH=
|
|
IPRANGE_MATCH=
|
|
RECENT_MATCH=
|
|
OWNER_MATCH=
|
|
IPSET_MATCH=
|
|
CONNMARK=
|
|
XCONNMARK=
|
|
CONNMARK_MATCH=
|
|
XCONNMARK_MATCH=
|
|
RAW_TABLE=
|
|
IPP2P_MATCH=
|
|
LENGTH_MATCH=
|
|
CLASSIFY_TARGET=
|
|
ENHANCED_REJECT=
|
|
USEPKTTYPE=
|
|
KLUDGEFREE=
|
|
MARK=
|
|
XMARK=
|
|
MANGLE_FORWARD=
|
|
|
|
qt $IPTABLES -N fooX1234
|
|
qt $IPTABLES -A fooX1234 -m conntrack --ctorigdst 192.168.1.1 -j ACCEPT && CONNTRACK_MATCH=Yes
|
|
qt $IPTABLES -A fooX1234 -p tcp -m multiport --dports 21,22 -j ACCEPT && MULTIPORT=Yes
|
|
qt $IPTABLES -A fooX1234 -p tcp -m multiport --dports 21:22 -j ACCEPT && XMULTIPORT=Yes
|
|
qt $IPTABLES -A fooX1234 -m policy --pol ipsec --mode tunnel --dir in -j ACCEPT && POLICY_MATCH=Yes
|
|
|
|
if qt $IPTABLES -A fooX1234 -m physdev --physdev-in eth0 -j ACCEPT; then
|
|
PHYSDEV_MATCH=Yes
|
|
fi
|
|
|
|
if qt $IPTABLES -A fooX1234 -m iprange --src-range 192.168.1.5-192.168.1.124 -j ACCEPT; then
|
|
IPRANGE_MATCH=Yes
|
|
if [ -z "${KLUDGEFREE}" ]; then
|
|
qt $IPTABLES -A fooX1234 -m iprange --src-range 192.168.1.5-192.168.1.124 -m iprange --dst-range 192.168.1.5-192.168.1.124 -j ACCEPT && KLUDGEFREE=Yes
|
|
fi
|
|
fi
|
|
|
|
qt $IPTABLES -A fooX1234 -m recent --update -j ACCEPT && RECENT_MATCH=Yes
|
|
qt $IPTABLES -A fooX1234 -m owner --uid-owner 0 -j ACCEPT && OWNER_MATCH=Yes
|
|
|
|
if qt $IPTABLES -A fooX1234 -m connmark --mark 2 -j ACCEPT; then
|
|
CONNMARK_MATCH=Yes
|
|
qt $IPTABLES -A fooX1234 -m connmark --mark 2/0xFF -j ACCEPT && XCONNMARK_MATCH=Yes
|
|
fi
|
|
|
|
qt $IPTABLES -A fooX1234 -p tcp -m ipp2p --ipp2p -j ACCEPT && IPP2P_MATCH=Yes
|
|
qt $IPTABLES -A fooX1234 -m length --length 10:20 -j ACCEPT && LENGTH_MATCH=Yes
|
|
qt $IPTABLES -A fooX1234 -j REJECT --reject-with icmp-host-prohibited && ENHANCED_REJECT=Yes
|
|
|
|
if [ -n "$MANGLE_ENABLED" ]; then
|
|
qt $IPTABLES -t mangle -N fooX1234
|
|
|
|
if qt $IPTABLES -t mangle -A fooX1234 -j MARK --set-mark 1; then
|
|
MARK=Yes
|
|
qt $IPTABLES -t mangle -A fooX1234 -j MARK --and-mark 0xFF && XMARK=Yes
|
|
fi
|
|
|
|
if qt $IPTABLES -t mangle -A fooX1234 -j CONNMARK --save-mark; then
|
|
CONNMARK=Yes
|
|
qt $IPTABLES -t mangle -A fooX1234 -j CONNMARK --save-mark --mask 0xFF && XCONNMARK=Yes
|
|
fi
|
|
|
|
qt $IPTABLES -t mangle -A fooX1234 -j CLASSIFY --set-class 1:1 && CLASSIFY_TARGET=Yes
|
|
qt $IPTABLES -t mangle -F fooX1234
|
|
qt $IPTABLES -t mangle -X fooX1234
|
|
qt $IPTABLES -t mangle -L FORWARD -n && MANGLE_FORWARD=Yes
|
|
fi
|
|
|
|
qt $IPTABLES -t raw -L -n && RAW_TABLE=Yes
|
|
|
|
if qt mywhich ipset; then
|
|
qt ipset -X fooX1234 # Just in case something went wrong the last time
|
|
|
|
if qt ipset -N fooX1234 iphash ; then
|
|
if qt $IPTABLES -A fooX1234 -m set --set fooX1234 src -j ACCEPT; then
|
|
qt $IPTABLES -D fooX1234 -m set --set fooX1234 src -j ACCEPT
|
|
IPSET_MATCH=Yes
|
|
fi
|
|
qt ipset -X fooX1234
|
|
fi
|
|
fi
|
|
|
|
qt $IPTABLES -A fooX1234 -m pkttype --pkt-type broadcast -j ACCEPT && USEPKTTYPE=Yes
|
|
|
|
qt $IPTABLES -F fooX1234
|
|
qt $IPTABLES -X fooX1234
|
|
}
|
|
|
|
report_capabilities() {
|
|
report_capability() # $1 = Capability Description , $2 Capability Setting (if any)
|
|
{
|
|
local setting=
|
|
|
|
[ "x$2" = "xYes" ] && setting="Available" || setting="Not available"
|
|
|
|
echo " " $1: $setting
|
|
}
|
|
|
|
if [ $VERBOSE -gt 1 ]; then
|
|
echo "Shorewall has detected the following iptables/netfilter capabilities:"
|
|
report_capability "NAT" $NAT_ENABLED
|
|
report_capability "Packet Mangling" $MANGLE_ENABLED
|
|
report_capability "Multi-port Match" $MULTIPORT
|
|
[ -n "$MULTIPORT" ] && report_capability "Extended Multi-port Match" $XMULTIPORT
|
|
report_capability "Connection Tracking Match" $CONNTRACK_MATCH
|
|
report_capability "Packet Type Match" $USEPKTTYPE
|
|
report_capability "Policy Match" $POLICY_MATCH
|
|
report_capability "Physdev Match" $PHYSDEV_MATCH
|
|
report_capability "Packet length Match" $LENGTH_MATCH
|
|
report_capability "IP range Match" $IPRANGE_MATCH
|
|
report_capability "Recent Match" $RECENT_MATCH
|
|
report_capability "Owner Match" $OWNER_MATCH
|
|
report_capability "Ipset Match" $IPSET_MATCH
|
|
report_capability "CONNMARK Target" $CONNMARK
|
|
[ -n "$CONNMARK" ] && report_capability "Extended CONNMARK Target" $XCONNMARK
|
|
report_capability "Connmark Match" $CONNMARK_MATCH
|
|
[ -n "$CONNMARK_MATCH" ] && report_capability "Extended Connmark Match" $XCONNMARK_MATCH
|
|
report_capability "Raw Table" $RAW_TABLE
|
|
report_capability "IPP2P Match" $IPP2P_MATCH
|
|
report_capability "CLASSIFY Target" $CLASSIFY_TARGET
|
|
report_capability "Extended REJECT" $ENHANCED_REJECT
|
|
report_capability "Repeat match" $KLUDGEFREE
|
|
report_capability "MARK Target" $MARK
|
|
[ -n "$MARK" ] && report_capability "Extended MARK Target" $XMARK
|
|
report_capability "Mangle FORWARD Chain" $MANGLE_FORWARD
|
|
fi
|
|
|
|
[ -n "$PKTTYPE" ] || USEPKTTYPE=
|
|
|
|
}
|
|
|
|
report_capabilities1() {
|
|
report_capability1() # $1 = Capability
|
|
{
|
|
eval echo $1=\$$1
|
|
}
|
|
|
|
echo "#"
|
|
echo "# Shorewall $VERSION detected the following iptables/netfilter capabilities - $(date)"
|
|
echo "#"
|
|
report_capability1 NAT_ENABLED
|
|
report_capability1 MANGLE_ENABLED
|
|
report_capability1 MULTIPORT
|
|
report_capability1 XMULTIPORT
|
|
report_capability1 CONNTRACK_MATCH
|
|
report_capability1 USEPKTTYPE
|
|
report_capability1 POLICY_MATCH
|
|
report_capability1 PHYSDEV_MATCH
|
|
report_capability1 LENGTH_MATCH
|
|
report_capability1 IPRANGE_MATCH
|
|
report_capability1 RECENT_MATCH
|
|
report_capability1 OWNER_MATCH
|
|
report_capability1 IPSET_MATCH
|
|
report_capability1 CONNMARK
|
|
report_capability1 XCONNMARK
|
|
report_capability1 CONNMARK_MATCH
|
|
report_capability1 XCONNMARK_MATCH
|
|
report_capability1 RAW_TABLE
|
|
report_capability1 IPP2P_MATCH
|
|
report_capability1 CLASSIFY_TARGET
|
|
report_capability1 ENHANCED_REJECT
|
|
report_capability1 KLUDGEFREE
|
|
report_capability1 MARK
|
|
report_capability1 XMARK
|
|
report_capability1 MANGLE_FORWARD
|
|
}
|
|
|
|
#
|
|
# Delete IP address
|
|
#
|
|
del_ip_addr() # $1 = address, $2 = interface
|
|
{
|
|
[ $(find_first_interface_address_if_any $2) = $1 ] || qt ip addr del $1 dev $2
|
|
}
|
|
|
|
# Add IP Aliases
|
|
#
|
|
add_ip_aliases() # $* = List of addresses
|
|
{
|
|
local addresses external interface inet cidr rest val arping=$(mywhich arping)
|
|
|
|
address_details()
|
|
{
|
|
#
|
|
# Folks feel uneasy if they don't see all of the same
|
|
# decoration on these IP addresses that they see when their
|
|
# distro's net config tool adds them. In an attempt to reduce
|
|
# the anxiety level, we have the following code which sets
|
|
# the VLSM and BRD from an existing address in the same networks
|
|
#
|
|
# Get all of the lines that contain inet addresses with broadcast
|
|
#
|
|
ip -f inet addr show $interface 2> /dev/null | grep 'inet.*brd' | while read inet cidr rest ; do
|
|
case $cidr in
|
|
*/*)
|
|
if in_network $external $cidr; then
|
|
echo "/${cidr#*/} brd $(broadcastaddress $cidr)"
|
|
break
|
|
fi
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
do_one()
|
|
{
|
|
val=$(address_details)
|
|
|
|
ip addr add ${external}${val} dev $interface $label
|
|
[ -n "$arping" ] && qt $arping -U -c 2 -I $interface $external
|
|
echo "$external $interface" >> $STATEDIR/nat
|
|
[ -n "$label" ] && label="with $label"
|
|
progress_message " IP Address $external added to interface $interface $label"
|
|
}
|
|
|
|
progress_message "Adding IP Addresses..."
|
|
|
|
while [ $# -gt 0 ]; do
|
|
external=$1
|
|
interface=$2
|
|
label=
|
|
|
|
if [ "$interface" != "${interface%:*}" ]; then
|
|
label="${interface#*:}"
|
|
interface="${interface%:*}"
|
|
label="label $interface:$label"
|
|
fi
|
|
|
|
shift 2
|
|
|
|
list_search $external $(find_interface_addresses $interface) || do_one
|
|
done
|
|
}
|
|
|
|
detect_gateway() # $1 = interface
|
|
{
|
|
local interface=$1
|
|
#
|
|
# First assume that this is some sort of point-to-point interface
|
|
#
|
|
gateway=$( find_peer $(ip addr ls $interface ) )
|
|
#
|
|
# Maybe there's a default route through this gateway already
|
|
#
|
|
[ -n "$gateway" ] || gateway=$(find_gateway $(ip route ls dev $interface))
|
|
#
|
|
# Last hope -- is there a load-balancing route through the interface?
|
|
#
|
|
[ -n "$gateway" ] || gateway=$(find_nexthop $interface)
|
|
#
|
|
# Be sure we found one
|
|
#
|
|
[ -n "$gateway" ] && echo $gateway
|
|
}
|
|
|
|
#
|
|
# Disable IPV6
|
|
#
|
|
disable_ipv6() {
|
|
local foo="$(ip -f inet6 addr ls 2> /dev/null)"
|
|
|
|
if [ -n "$foo" ]; then
|
|
if qt mywhich ip6tables; then
|
|
ip6tables -P FORWARD DROP
|
|
ip6tables -P INPUT DROP
|
|
ip6tables -P OUTPUT DROP
|
|
ip6tables -F
|
|
ip6tables -X
|
|
ip6tables -A OUTPUT -o lo -j ACCEPT
|
|
ip6tables -A INPUT -i lo -j ACCEPT
|
|
else
|
|
error_message "WARNING: DISABLE_IPV6=Yes in shorewall.conf but this system does not appear to have ip6tables"
|
|
fi
|
|
fi
|
|
}
|
|
|
|
#
|
|
# Add a logging rule.
|
|
#
|
|
log_rule_limit() # $1 = log level, $2 = chain, $3 = display Chain $4 = disposition , $5 = rate limit $6=log tag $7=command $... = predicates for the rule
|
|
{
|
|
local level=$1
|
|
local chain=$2
|
|
local displayChain=$3
|
|
local disposition=$4
|
|
local rulenum=
|
|
local limit=
|
|
local tag=${6:+$6 }
|
|
local command=${7:--A}
|
|
local prefix
|
|
local base=$(chain_base $displayChain)
|
|
|
|
limit="${5:-$LOGLIMIT}" # Do this here rather than in the declaration above to appease /bin/ash.
|
|
|
|
shift 7
|
|
|
|
if [ -n "$tag" -a -n "$LOGTAGONLY" ]; then
|
|
displayChain=$tag
|
|
tag=
|
|
fi
|
|
|
|
if [ -n "$LOGRULENUMBERS" ]; then
|
|
eval rulenum=\$${base}_logrules
|
|
|
|
rulenum=${rulenum:-1}
|
|
|
|
prefix="$(printf "$LOGFORMAT" $displayChain $rulenum $disposition)${tag}"
|
|
|
|
rulenum=$(($rulenum + 1))
|
|
eval ${base}_logrules=$rulenum
|
|
else
|
|
prefix="$(printf "$LOGFORMAT" $displayChain $disposition)${tag}"
|
|
fi
|
|
|
|
if [ ${#prefix} -gt 29 ]; then
|
|
prefix="$(echo $prefix | truncate 29)"
|
|
error_message "WARNING: Log Prefix shortened to \"$prefix\""
|
|
fi
|
|
|
|
[ "$COMMAND" = compile ] && prefix="\"$prefix\""
|
|
|
|
case $level in
|
|
ULOG)
|
|
run_iptables $command $chain $@ $limit -j ULOG $LOGPARMS --ulog-prefix "$prefix"
|
|
;;
|
|
*)
|
|
run_iptables $command $chain $@ $limit -j LOG $LOGPARMS --log-level $level --log-prefix "$prefix"
|
|
;;
|
|
esac
|
|
|
|
if [ $? -ne 0 ] ; then
|
|
[ -z "$STOPPING" ] && { stop_firewall; exit 2; }
|
|
fi
|
|
}
|
|
|
|
log_rule() # $1 = log level, $2 = chain, $3 = disposition , $... = predicates for the rule
|
|
{
|
|
local level=$1
|
|
local chain=$2
|
|
local disposition=$3
|
|
|
|
shift 3
|
|
|
|
log_rule_limit $level $chain $chain $disposition "$LOGLIMIT" "" -A $@
|
|
}
|
|
|
|
#
|
|
# Check that a mark value or mask is less that 256 or that it is less than 65536 and
|
|
# that it's lower 8 bits are zero.
|
|
#
|
|
verify_mark() # $1 = value to test
|
|
{
|
|
verify_mark2()
|
|
{
|
|
case $1 in
|
|
0*)
|
|
[ $(($1)) -lt 256 ] && return 0
|
|
[ -n "$HIGH_ROUTE_MARKS" ] || return 1
|
|
[ $(($1)) -gt 65535 ] && return 1
|
|
return $(($1 & 0xFF))
|
|
;;
|
|
[1-9]*)
|
|
[ $1 -lt 256 ] && return 0
|
|
[ -n "$HIGH_ROUTE_MARKS" ] || return 1
|
|
[ $1 -gt 65535 ] && return 1
|
|
return $(($1 & 0xFF))
|
|
;;
|
|
*)
|
|
return 2
|
|
;;
|
|
esac
|
|
}
|
|
|
|
verify_mark2 $1 || fatal_error "Invalid Mark or Mask value: $1"
|
|
}
|
|
|
|
#
|
|
# Detect a device's MTU
|
|
#
|
|
get_device_mtu() # $1 = device
|
|
{
|
|
local output="$(ip link ls dev $1 2> /dev/null)" # quotes required for /bin/ash
|
|
|
|
if [ -n "$output" ]; then
|
|
echo $(find_mtu $output)
|
|
else
|
|
echo 1500
|
|
fi
|
|
}
|
|
|
|
#
|
|
# Arne Bernin's 'tc4shorewall'
|
|
#
|
|
setup_traffic_shaping()
|
|
{
|
|
local mtu r2q tc_all_devices device mark rate ceil prio options devfile=$(find_file tcdevices) classfile=$(find_file tcclasses) devnum=1 last_device=
|
|
r2q=10
|
|
|
|
rate_to_kbit() {
|
|
local rateunit rate
|
|
rate=$1
|
|
rateunit=$( echo $rate | sed -e 's/[0-9]*//')
|
|
rate=$( echo $rate | sed -e 's/[a-z]*//g')
|
|
|
|
case $rateunit in
|
|
kbit)
|
|
rate=$rate
|
|
;;
|
|
mbit)
|
|
rate=$(expr $rate \* 1024)
|
|
;;
|
|
mbps)
|
|
rate=$(expr $rate \* 8192)
|
|
;;
|
|
kbps)
|
|
rate=$(expr $rate \* 8)
|
|
;;
|
|
*)
|
|
rate=$(expr $rate / 128)
|
|
;;
|
|
esac
|
|
echo $rate
|
|
}
|
|
|
|
calculate_quantum() {
|
|
local rate=$(rate_to_kbit $1)
|
|
echo $(( $rate * ( 128 / $r2q ) ))
|
|
}
|
|
|
|
# get given outbandwidth for device
|
|
get_outband_for_dev() {
|
|
local device inband outband
|
|
while read device inband outband; do
|
|
expandv device inband outband
|
|
tcdev="$device $inband $outband"
|
|
if [ "$1" = "$device" ] ; then
|
|
echo $outband
|
|
return
|
|
fi
|
|
done < $TMP_DIR/tcdevices
|
|
}
|
|
|
|
check_tcclasses_options() {
|
|
while [ $# -gt 1 ]; do
|
|
shift
|
|
case $1 in
|
|
default|tcp-ack|tos-minimize-delay|tos-maximize-throughput|tos-maximize-reliability|tos-minimize-cost|tos-normal-service)
|
|
;;
|
|
tos=0x[0-9a-f][0-9a-f]|tos=0x[0-9a-f][0-9a-f]/0x[0-9a-f][0-9a-f])
|
|
;;
|
|
*)
|
|
echo $1
|
|
return 1
|
|
;;
|
|
esac
|
|
done
|
|
return 0
|
|
}
|
|
|
|
get_defmark_for_dev() {
|
|
local searchdev searchmark device ceil prio options
|
|
searchdev=$1
|
|
|
|
while read device mark rate ceil prio options; do
|
|
expandv device mark rate ceil prio options
|
|
options=$(separate_list $options | tr '[A-Z]' '[a-z]')
|
|
tcdev="$device $mark $rate $ceil $prio $options"
|
|
if [ "$searchdev" = "$device" ] ; then
|
|
list_search "default" $options && echo $mark &&return 0
|
|
fi
|
|
done < $TMP_DIR/tcclasses
|
|
|
|
return 1
|
|
}
|
|
|
|
check_defmark_for_dev() {
|
|
get_defmark_for_dev $1 >/dev/null
|
|
}
|
|
|
|
validate_tcdevices_file() {
|
|
progress_message2 "Validating $devfile..."
|
|
local device local device inband outband
|
|
while read device inband outband; do
|
|
expandv device inband outband
|
|
tcdev="$device $inband $outband"
|
|
check_defmark_for_dev $device || fatal_error "Option default is not defined for any class in tcclasses for interface $device"
|
|
case $interface in
|
|
*:*|+)
|
|
fatal_error "Invalid Interface Name: $interface"
|
|
;;
|
|
esac
|
|
list_search $device $devices && fatal_error "Interface $device is defined more than once in tcdevices"
|
|
tc_all_devices="$tc_all_devices $device"
|
|
done < $TMP_DIR/tcdevices
|
|
}
|
|
|
|
validate_tcclasses_file() {
|
|
progress_message2 "Validating $classfile..."
|
|
local classlist device mark rate ceil prio bandw wrongopt allopts opt
|
|
allopts=""
|
|
while read device mark rate ceil prio options; do
|
|
expandv device mark rate ceil prio options
|
|
tcdev="$device $mark $rate $ceil $prio $options"
|
|
ratew=$(get_outband_for_dev $device)
|
|
options=$(separate_list $options | tr '[A-Z]' '[a-z]')
|
|
for opt in $options; do
|
|
case $opt in
|
|
tos=0x??)
|
|
opt="$opt/0xff"
|
|
;;
|
|
esac
|
|
list_search "$device-$opt" $allopts && fatal_error "option $opt already defined in a chain for interface $device in tcclasses"
|
|
allopts="$allopts $device-$opt"
|
|
done
|
|
wrongopt=$(check_tcclasses_options $options) || fatal_error "unknown option $wrongopt for class iface $device mark $mark in tcclasses file"
|
|
if [ -z "$ratew" ] ; then
|
|
fatal_error "device $device seems not to be configured in tcdevices"
|
|
fi
|
|
list_search "$device-$mark" $classlist && fatal_error "Mark $mark for interface $device defined more than once in tcclasses"
|
|
#
|
|
# Convert HEX/OCTAL mark representation to decimal
|
|
#
|
|
mark=$(($mark))
|
|
verify_mark $mark
|
|
[ $mark -lt 256 ] || fatal_error "Invalid Mark Value"
|
|
classlist="$classlist $device-$mark"
|
|
done < $TMP_DIR/tcclasses
|
|
}
|
|
|
|
add_root_tc() {
|
|
local defmark dev indent
|
|
|
|
dev=$(chain_base $device)
|
|
|
|
if [ $COMMAND = compile ]; then
|
|
save_command "if qt ip link ls dev $device; then"
|
|
indent="$INDENT"
|
|
INDENT="$INDENT "
|
|
save_command ${dev}_exists=Yes
|
|
save_command qt tc qdisc del dev $device root
|
|
save_command qt tc qdisc del dev $device ingress
|
|
elif ! qt ip link ls dev $device; then
|
|
error_message "WARNING: Device $device not found -- traffic-shaping configuration skipped"
|
|
return 1
|
|
fi
|
|
|
|
defmark=$(get_defmark_for_dev $device)
|
|
|
|
run_tc qdisc add dev $device root handle $devnum: htb default 1$defmark
|
|
|
|
if [ $COMMAND = compile ]; then
|
|
save_command "${dev}_mtu=\$(get_device_mtu $device)"
|
|
run_tc "class add dev $device parent $devnum: classid $devnum:1 htb rate $outband mtu \$${dev}_mtu"
|
|
else
|
|
run_tc class add dev $device parent $devnum: classid $devnum:1 htb rate $outband mtu $(get_device_mtu $device)
|
|
fi
|
|
|
|
run_tc qdisc add dev $device handle ffff: ingress
|
|
run_tc filter add dev $device parent ffff: protocol ip prio 50 u32 match ip src 0.0.0.0/0 police rate ${inband} burst 10k drop flowid :1
|
|
eval ${dev}_devnum=$devnum
|
|
devnum=$(($devnum + 1))
|
|
|
|
if [ $COMMAND = compile ]; then
|
|
save_progress_message_short " TC Device $tcdev defined."
|
|
INDENT="$indent"
|
|
save_command else
|
|
INDENT="$INDENT "
|
|
save_command error_message "\"WARNING: Device $device not found -- traffic-shaping configuration skipped\""
|
|
save_command "${dev}_exists="
|
|
INDENT="$indent"
|
|
save_command "fi"
|
|
save_command
|
|
fi
|
|
|
|
return 0
|
|
}
|
|
|
|
add_tc_class() {
|
|
local full classid tospair tosmask quantum indent
|
|
|
|
dev=$(chain_base $device)
|
|
|
|
if [ $COMMAND = compile ]; then
|
|
save_command "if [ -n \"\$${dev}_exists\" ] ; then"
|
|
indent="$INDENT"
|
|
INDENT="$INDENT "
|
|
else
|
|
qt ip link ls dev $device || return 1
|
|
fi
|
|
|
|
full=$(get_outband_for_dev $device)
|
|
full=$(rate_to_kbit $full)
|
|
|
|
if [ -z "$prio" ] ; then
|
|
prio=1
|
|
fi
|
|
|
|
case $rate in
|
|
*full*)
|
|
rate=$(echo $rate | sed -e "s/full/$full/")
|
|
rate="$(($rate))kbit"
|
|
;;
|
|
esac
|
|
|
|
case $ceil in
|
|
*full*)
|
|
ceil=$(echo $ceil | sed -e "s/full/$full/")
|
|
ceil="$(($ceil))kbit"
|
|
;;
|
|
esac
|
|
|
|
eval devnum=\$${dev}_devnum
|
|
#
|
|
# Convert HEX/OCTAL mark representation to decimal
|
|
#
|
|
mark=$(($mark))
|
|
|
|
classid=$devnum:1$mark
|
|
|
|
[ -n "$devnum" ] || fatal_error "Device $device not defined in $devfile"
|
|
|
|
quantum=$(calculate_quantum $rate)
|
|
|
|
if [ $COMMAND = compile ]; then
|
|
save_command "[ \$${dev}_mtu -gt $quantum ] && quantum=\$${dev}_mtu || quantum=$quantum"
|
|
run_tc "class add dev $device parent $devnum:1 classid $classid htb rate $rate ceil $ceil prio $prio mtu \$${dev}_mtu quantum \$quantum"
|
|
else
|
|
[ "$last_device" = $device ] || mtu=$(get_device_mtu $device)
|
|
[ $mtu -gt $quantum ] && quantum=$mtu
|
|
run_tc class add dev $device parent $devnum:1 classid $classid htb rate $rate ceil $ceil prio $prio mtu $mtu quantum $quantum
|
|
fi
|
|
|
|
run_tc qdisc add dev $device parent $classid handle 1$mark: sfq perturb 10
|
|
# add filters
|
|
if [ -n "$CLASSIFY_TARGET" ]; then
|
|
run_iptables -t mangle -A tcpost $(match_dest_dev $device) -m mark --mark $mark/0xFF -j CLASSIFY --set-class $classid
|
|
else
|
|
run_tc filter add dev $device protocol ip parent $devnum:0 prio 1 handle $mark fw classid $classid
|
|
fi
|
|
#options
|
|
list_search "tcp-ack" $options && run_tc filter add dev $device parent $devnum:0 protocol ip prio 10 u32 match ip protocol 6 0xff match u8 0x05 0x0f at 0 match u16 0x0000 0xffc0 at 2 match u8 0x10 0xff at 33 flowid $classid
|
|
list_search "tos-minimize-delay" $options && options="$options tos=0x10/0x10"
|
|
list_search "tos-maximize-throughput" $options && options="$options tos=0x08/0x08"
|
|
list_search "tos-maximize-reliability" $options && options="$options tos=0x04/0x04"
|
|
list_search "tos-minimize-cost" $options && options="$options tos=0x02/0x02"
|
|
list_search "tos-normal-service" $options && options="$options tos=0x00/0x1e"
|
|
|
|
for tospair in $(list_walk "tos=" $options) ; do
|
|
case $tospair in
|
|
*/*)
|
|
tosmask=${tospair##*/}
|
|
;;
|
|
*)
|
|
tosmask=0xff
|
|
;;
|
|
esac
|
|
run_tc filter add dev $device parent $devnum:0 protocol ip prio 10 u32 match ip tos ${tospair%%/*} $tosmask flowid $classid
|
|
done
|
|
|
|
if [ $COMMAND = compile ]; then
|
|
save_progress_message_short " TC Class $tcdev defined."
|
|
INDENT="$indent"
|
|
save_command fi
|
|
save_command
|
|
fi
|
|
|
|
return 0
|
|
}
|
|
|
|
strip_file tcdevices $devfile
|
|
strip_file tcclasses $classfile
|
|
|
|
validate_tcdevices_file
|
|
validate_tcclasses_file
|
|
|
|
if [ -s $TMP_DIR/tcdevices ]; then
|
|
[ $COMMAND = compile ] && save_progress_message "Setting up Traffic Control..."
|
|
progress_message2 "$DOING $devfile..."
|
|
|
|
while read device inband outband; do
|
|
expandv device inband outband
|
|
tcdev="$device $inband $outband"
|
|
add_root_tc && progress_message " TC Device $tcdev defined."
|
|
done < $TMP_DIR/tcdevices
|
|
fi
|
|
|
|
if [ -s $TMP_DIR/tcclasses ]; then
|
|
progress_message2 "$DOING $classfile..."
|
|
|
|
while read device mark rate ceil prio options; do
|
|
expandv device mark rate ceil prio options
|
|
tcdev="$device $mark $rate $ceil $prio $options"
|
|
options=$(separate_list $options | tr '[A-Z]' '[a-z]')
|
|
add_tc_class && progress_message " TC Class $tcdev defined."
|
|
last_device=$device
|
|
done < $TMP_DIR/tcclasses
|
|
fi
|
|
}
|
|
|
|
#
|
|
# Process a TC Rule - $MARKING_CHAIN is assumed to contain the name of the
|
|
# default marking chain
|
|
#
|
|
process_tc_rule()
|
|
{
|
|
local did_connmark=
|
|
|
|
chain=$MARKING_CHAIN target="MARK --set-mark" marktest=
|
|
|
|
verify_designator() {
|
|
[ "$chain" = tcout ] && \
|
|
fatal_error "Chain designator not allowed when source is \$FW; rule \"$rule\""
|
|
chain=$1
|
|
mark="${mark%:*}"
|
|
}
|
|
|
|
do_ipp2p()
|
|
{
|
|
[ -n "$IPP2P_MATCH" ] || fatal_error "Your kernel and/or iptables does not have IPP2P match support. Rule: \"$rule\""
|
|
[ "x$port" = "x-" ] && port="ipp2p"
|
|
|
|
case $proto in
|
|
*:*)
|
|
proto=${proto#*:}
|
|
;;
|
|
*)
|
|
proto=tcp
|
|
;;
|
|
esac
|
|
|
|
r="${r}-p $proto -m ipp2p --${port} "
|
|
}
|
|
|
|
verify_small_mark()
|
|
{
|
|
verify_mark $1
|
|
[ $(($1)) -lt 256 ] || fatal_error "Mark Value ($1) too larg, rule \"$rule\""
|
|
}
|
|
|
|
do_connmark()
|
|
{
|
|
target="CONNMARK --set-mark"
|
|
mark=$mark/0xff
|
|
did_connmark=Yes
|
|
}
|
|
|
|
validate_mark()
|
|
{
|
|
case $1 in
|
|
*/*)
|
|
verify_mark ${1%/*}
|
|
verify_mark ${1#*/}
|
|
;;
|
|
*)
|
|
verify_mark $1
|
|
;;
|
|
esac
|
|
}
|
|
|
|
add_a_tc_rule() {
|
|
r=
|
|
|
|
if [ "x$source" != "x-" ]; then
|
|
case $source in
|
|
$FW:*)
|
|
chain=tcout
|
|
r="$(source_ip_range ${source#*:}) "
|
|
;;
|
|
*:*)
|
|
interface=${source%:*}
|
|
verify_interface $interface || fatal_error "Unknown interface $interface in rule \"$rule\""
|
|
r="$(match_source_dev $interface) $(source_ip_range ${source#*:}) "
|
|
;;
|
|
*.*.*|+*|!+*)
|
|
r="$(source_ip_range $source) "
|
|
;;
|
|
~*|!~*)
|
|
r="$(mac_match $source) "
|
|
;;
|
|
$FW)
|
|
chain=tcout
|
|
;;
|
|
*)
|
|
verify_interface $source || fatal_error "Unknown interface $source in rule \"$rule\""
|
|
r="$(match_source_dev $source) "
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
if [ "x${user:--}" != "x-" ]; then
|
|
|
|
[ "$chain" != tcout ] && \
|
|
fatal_error "Invalid use of a user/group: rule \"$rule\""
|
|
|
|
r="$r-m owner"
|
|
|
|
case "$user" in
|
|
*+*)
|
|
r="$r --cmd-owner ${user#*+} "
|
|
user=${user%+*}
|
|
;;
|
|
esac
|
|
|
|
case "$user" in
|
|
*:*)
|
|
temp="${user%:*}"
|
|
[ -n "$temp" ] && r="$r --uid-owner $temp "
|
|
temp="${user#*:}"
|
|
[ -n "$temp" ] && r="$r --gid-owner $temp "
|
|
;;
|
|
*)
|
|
[ -n "$user" ] && r="$r --uid-owner $user "
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
|
|
[ -n "$marktest" ] && r="${r}-m ${marktest}--mark $testval "
|
|
|
|
if [ "x$dest" != "x-" ]; then
|
|
case $dest in
|
|
*:*)
|
|
[ "$chain" = tcpre ] && fatal_error "Destination interface is not allowed in the PREROUTING chain - rule \"$rule\""
|
|
interface=${dest%:*}
|
|
verify_interface $interface || fatal_error "Unknown interface $interface in rule \"$rule\""
|
|
r="$(match_dest_dev $interface) $(dest_ip_range ${dest#*:}) "
|
|
;;
|
|
*.*.*|+*|!+*)
|
|
r="${r}$(dest_ip_range $dest) "
|
|
;;
|
|
*)
|
|
[ "$chain" = tcpre ] && fatal_error "Destination interface is not allowed in the PREROUTING chain - rule \"$rule\""
|
|
verify_interface $dest || fatal_error "Unknown interface $dest in rule \"$rule\""
|
|
r="${r}$(match_dest_dev $dest) "
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
if [ "x${length:=-}" != "x-" ]; then
|
|
[ -n "$LENGTH_MATCH" ] || fatal_error "Your kernel and/or iptables does not have length match support. Rule: \"$rule\""
|
|
r="${r}-m length --length ${length} "
|
|
fi
|
|
|
|
if [ "x${tos:=-}" != "x-" ]; then
|
|
r="${r}-m tos --tos ${tos} "
|
|
fi
|
|
|
|
multiport=
|
|
|
|
case $proto in
|
|
ipp2p|IPP2P|ipp2p:*|IPP2P:*)
|
|
do_ipp2p
|
|
;;
|
|
icmp|ICMP|1)
|
|
r="${r}-p icmp "
|
|
[ "x$port" = "x-" ] || r="${r}--icmp-type $port"
|
|
;;
|
|
*)
|
|
[ "x$proto" = "x-" ] && proto=all
|
|
[ "x$proto" = "x" ] && proto=all
|
|
[ "$proto" = "all" ] || r="${r}-p $proto "
|
|
[ "x$port" = "x-" ] || r="${r}--dport $port "
|
|
;;
|
|
esac
|
|
|
|
[ "x$sport" = "x-" ] || r="${r}--sport $sport "
|
|
|
|
if [ -n "${excludesources}${excludedests}" ]; then
|
|
build_exclusion_chain chain1 mangle "$excludesources" "$excludedests"
|
|
|
|
run_iptables2 -t mangle -A $chain $r -j $chain1
|
|
|
|
run_iptables -t mangle -A $chain1 -j $target $mark
|
|
else
|
|
run_iptables2 -t mangle -A $chain $r -j $target $mark
|
|
fi
|
|
|
|
}
|
|
|
|
if [ "$mark" != "${mark%:*}" ]; then
|
|
case "${mark#*:}" in
|
|
p|P)
|
|
verify_designator tcpre
|
|
;;
|
|
cp|CP)
|
|
verify_designator tcpre
|
|
do_connmark
|
|
;;
|
|
f|F)
|
|
verify_designator tcfor
|
|
;;
|
|
cf|CF)
|
|
verify_designator tcfor
|
|
do_connmark
|
|
;;
|
|
c|C)
|
|
mark=${mark%:*}
|
|
do_connmark
|
|
;;
|
|
*)
|
|
chain=tcpost
|
|
target="CLASSIFY --set-class"
|
|
;;
|
|
esac
|
|
|
|
fi
|
|
|
|
mask=0xffff
|
|
|
|
case $mark in
|
|
SAVE)
|
|
[ -n "$did_connmark" ] && fatal_error "SAVE not valid with :C[FP]"
|
|
target="CONNMARK --save-mark --mask 0xFF"
|
|
mark=
|
|
;;
|
|
SAVE/*)
|
|
[ -n "$did_connmark" ] && fatal_error "SAVE not valid with :C[FP]"
|
|
target="CONNMARK --save-mark --mask"
|
|
mark=${mark#*/}
|
|
verify_small_mark $mark
|
|
;;
|
|
RESTORE)
|
|
[ -n "$did_connmark" ] && fatal_error "RESTORE not valid with :C[FP]"
|
|
target="CONNMARK --restore-mark --mask 0xFF"
|
|
mark=
|
|
;;
|
|
RESTORE/*)
|
|
[ -n "$did_connmark" ] && fatal_error "RESTORE not valid with :C[FP]"
|
|
target="CONNMARK --restore-mark --mask"
|
|
mark=${mark#*/}
|
|
verify_small_mark $mark
|
|
;;
|
|
CONTINUE)
|
|
[ -n "$did_connmark" ] && fatal_error "CONTINUE not valid with :C[FP]"
|
|
target=RETURN
|
|
mark=
|
|
;;
|
|
*)
|
|
if [ "$chain" != tcpost ]; then
|
|
validate_mark $mark
|
|
if [ $((${mark%/*})) -gt 255 ]; then
|
|
case $chain in
|
|
tcpre|tcout)
|
|
target="MARK --or-mark"
|
|
;;
|
|
*)
|
|
fatal_error "Invalid mark value ($mark) in rule \"$rule\""
|
|
;;
|
|
esac
|
|
elif [ $((${mark%/*})) -ne 0 -a -n "$HIGH_ROUTE_MARKS" -a $chain = tcpre ]; then
|
|
fatal_error "Marks < 256 may not be set in the PREROUTING chain when HIGH_ROUTE_MARKS=Yes"
|
|
fi
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
case $testval in
|
|
-)
|
|
;;
|
|
!*:C)
|
|
marktest="connmark ! "
|
|
testval=${testval%:*}
|
|
testval=${testval#!}
|
|
;;
|
|
*:C)
|
|
marktest="connmark "
|
|
testval=${testval%:*}
|
|
;;
|
|
!*)
|
|
marktest="mark ! "
|
|
testval=${testval#!}
|
|
;;
|
|
*)
|
|
[ -n "$testval" ] && marktest="mark "
|
|
;;
|
|
esac
|
|
|
|
if [ -n "$marktest" ] ; then
|
|
case $testval in
|
|
*/*)
|
|
verify_mark ${testval%/*}
|
|
verify_mark ${testval#*/}
|
|
;;
|
|
*)
|
|
verify_mark $testval
|
|
testval=$testval/$mask
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
excludesources=
|
|
|
|
case ${sources:=-} in
|
|
*!*!*)
|
|
fatal_error "Invalid SOURCE in rule \"$rule\""
|
|
;;
|
|
!*)
|
|
if [ $(list_count $sources) -gt 1 ]; then
|
|
excludesources=${sources#!}
|
|
sources=-
|
|
fi
|
|
;;
|
|
*!*)
|
|
excludesources=${sources#*!}
|
|
sources=${sources%!*}
|
|
;;
|
|
esac
|
|
|
|
excludedests=
|
|
|
|
case ${dests:=-} in
|
|
*!*!*)
|
|
fatal_error "Invalid DEST in rule \"$rule\""
|
|
;;
|
|
!*)
|
|
if [ $(list_count $dests) -gt 1 ]; then
|
|
excludedests=${dests#*!}
|
|
dests=-
|
|
fi
|
|
;;
|
|
*!*)
|
|
excludedests=${dests#*!}
|
|
dests=${dests%!*}
|
|
;;
|
|
esac
|
|
|
|
for source in $(separate_list $sources); do
|
|
for dest in $(separate_list $dests); do
|
|
for port in $(separate_list ${ports:=-}); do
|
|
for sport in $(separate_list ${sports:=-}); do
|
|
add_a_tc_rule
|
|
done
|
|
done
|
|
done
|
|
done
|
|
|
|
progress_message " TC Rule \"$rule\" $DONE"
|
|
[ $COMMAND = compile ] && save_progress_message " TC Rule \"$rule\" Added"
|
|
}
|
|
|
|
delete_tc1()
|
|
{
|
|
clear_one_tc() {
|
|
tc qdisc del dev $1 root 2> /dev/null
|
|
tc qdisc del dev $1 ingress 2> /dev/null
|
|
|
|
}
|
|
|
|
run_user_exit tcclear
|
|
|
|
run_ip link list | \
|
|
while read inx interface details; do
|
|
case $inx in
|
|
[0-9]*)
|
|
clear_one_tc ${interface%:}
|
|
;;
|
|
*)
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
SHOREWALL_LIBRARY=Loaded
|