Add support for ROUTE target

git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@2120 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb

Shorewall2/changelog.txt

@@ -1,8 +1,16 @@
+Changes in 2.3.2
+
+1) Add support for -j ROUTE
+
+Changes in 2.3.1
+
+1) Change the behavior of SAVE_IPSETS and allow 'ipsets' files in
+   Shorewall configuration directories.
+
 Changes in 2.3.0
 
 1) Implement support for --cmd-owner
 
 2) Implement support for ipsets.
 
-3) Change the behavior of SAVE_IPSETS and allow 'ipsets' files in
-   Shorewall configuration directories.
+

Shorewall2/firewall

@@ -5248,6 +5248,103 @@ get_routed_networks() # $1 = interface name
         done
 }
 
+#
+# Add a route from /etc/shorewall/routes
+#
+add_a_route()
+{
+    local r=
+    local chain=routefwd
+
+    if [ "x$source" != "x-"	 ]; then
+	case ${source} in
+	    $FW:*)
+		chain=routeout
+		r="$(source_ip_range ${source%:*}) " 
+		;;
+	    *:*)
+		r="$(match_source_dev ${source%:*}) $(source_ip_range ${source#*:}) "
+		;;
+	    *.*.*|+*|!+*)
+		r="$(source_ip_range $source) "
+		;;
+	    ~*)
+		r="$(mac_match $source) "
+		;;
+	    $FW)
+		chain=routeout
+		;;
+	    *)		    
+		verify_interface $source || fatal_error "Unknown interface $source in rule \"$rule\""
+		r="$(match_source_dev) $source "
+		;;
+	esac
+    fi
+
+    if [ "x$dest" != "x-"  ]; then
+	case $dest in
+	    *:*)
+		verify_interface ${dest%:*} || fatal_error "Unknown interface ${dest%:*} in rule \"$rule\""
+		r="$(match_dest_dev ${dest%:*}) $(dest_ip_range ${dest#*:}) "
+		;;
+	    *.*.*|+*|!+*)
+		r="${r}$(dest_ip_range $dest) "
+		;;
+	    *)
+		verify_interface $dest || fatal_error "Unknown interface $dest in rule \"$rule\""
+		r="${r}$(match_dest_dev $dest) "
+		;;
+	    esac
+    fi
+
+    if [ "x$proto" = xipp2p ]; then
+	[ "x$port" = "x-" ] && port="ipp2p"
+	r="${r}-p tcp -m ipp2p --${port} "
+    else
+	[ "x$proto"  = "x-"  ] && proto=all
+	[ "x$proto"  = "x"   ] && proto=all
+	[ "$proto"   = "all" ] || r="${r}-p $proto "
+	[ "x$port"   = "x-"  ] || r="${r}--dport $port "
+    fi
+
+    [ "x${sport:--}"  = "x-"  ] || r="${r}--sport $sport "
+
+    r="${r}-j ROUTE "
+
+    [ "x${interface:--}" != x- ] && r="${r}--oif $interface "
+
+    [ "x${gateway:--}" != x- ] && r="${r}--gw $gateway"
+
+    run_iptables2 -t mangle -A $chain $r --continue
+
+    progress_message "   Routing Rule \"$rule\" Added."
+}
+
+#
+# Set up Routing
+#
+setup_routes() # $1 = file name
+{
+    strip_file routes $1
+
+    if [ -s $TMP_DIR/routes ]; then
+	echo "Processing $1..."
+	[ -n "$ROUTE_TARGET" ] || \
+	    fatal_error "Entries in /etc/shorewall/routes requires that your kernel and iptables have ROUTE target support"
+	run_iptables -t mangle -N routefwd
+	run_iptables -t mangle -A FORWARD -j routefwd
+	run_iptables -t mangle -N routeout
+	run_iptables -t mangle -A OUTPUT -j routeout
+
+	while read source dest proto port sport interface gateway; do
+
+	    expandv source dest proto port sport interface gateway
+	    rule="$source $dest $proto $port $sport $interface $gateway"
+	    add_a_route
+	done < $TMP_DIR/routes
+    fi
+}
+
 #
 # Set up Source NAT (including masquerading)
 #
@@ -5923,6 +6020,7 @@ determine_capabilities() {
     RECENT_MATCH=
     OWNER_MATCH=
     IPSET_MATCH=
+    ROUTE_TARGET=
 
     qt $IPTABLES -N fooX1234
     qt $IPTABLES -A fooX1234 -m conntrack --ctorigdst 192.168.1.1 -j ACCEPT             && CONNTRACK_MATCH=Yes
@@ -5934,6 +6032,12 @@ determine_capabilities() {
     qt $IPTABLES -A fooX1234 -m recent --update -j ACCEPT                               && RECENT_MATCH=Yes
     qt $IPTABLES -A fooX1234 -m owner --cmd-owner foo -j ACCEPT                         && OWNER_MATCH=Yes
     
+    qt $IPTABLES -t mangle -N fooX1234
+    qt $IPTABLES -t mangle -A fooX1234 -j ROUTE --oif eth0                              && ROUTE_TARGET=Yes
+    qt $IPTABLES -t mangle -F fooX1234
+    qt $IPTABLES -t mangle -X fooX1234
+  
+
     qt ipset -X fooX1234 # Just in case something went wrong the last time
 
     if qt ipset -N fooX1234 iphash ; then
@@ -5975,6 +6079,7 @@ report_capabilities() {
     report_capability "Recent Match" $RECENT_MATCH
     report_capability "Owner Match" $OWNER_MATCH
     report_capability "Ipset Match" $IPSET_MATCH
+    report_capability "Route Target" $ROUTE_TARGET
 }
 
 #
@@ -7072,6 +7177,9 @@ define_firewall() # $1 = Command (Start or Restart)
 
     [ -n "$TC_ENABLED" ] &&                    setup_tc
 
+    routes=$(find_file routes)
+    [ -f $routes ] &&                          setup_routes $routes
+
     echo "Activating Rules...";                activate_rules
 
     [ -n "$aliases_to_add" ] && \

Shorewall2/releasenotes.txt

@@ -1,5 +1,76 @@
-Shorewall 2.3.1
+Shorewall 2.3.3
 
+-----------------------------------------------------------------------
+Problems corrected in version 2.3.2
+
+None.
+-----------------------------------------------------------------------
+New Features in version 2.3.2
+
+1) Shorewall 2.3.2 can now configure routing if your kernel and
+   iptables support the ROUTE target extension. This extension is
+   available in Patch-O-Matic-ng.
+
+   Routing is configured using the /etc/shorewall/routes file. Columns
+   in the file are as follows:
+
+      SOURCE 		Source of the packet. May be any of the
+			following:
+
+
+			- A host or network address
+			- A network interface name.
+			- The name of an ipset prefaced with "+"
+			- $FW (for packets originating on the firewall)
+			- A MAC address in Shorewall format
+			- A range of IP addresses (assuming that your
+			  kernel and iptables support range match)
+			- A network interface name followed by ":"
+			  and an address or address range.
+
+	DEST		Destination of the packet. May be any of the
+			following:
+
+			- A host or network address
+			- A network interface name (determined from
+			  routing table(s))
+			- The name of an ipset prefaced with "+"
+			- A network interface name followed by ":"
+			  and an address or address range. 
+
+	PROTO		Protocol - Must be "tcp", "udp", "icmp",
+			"ipp2p", a number, or "all". "ipp2p" requires
+			ipp2p match support in your kernel and
+			iptables.
+
+	PORT(S)		Destination Ports. A comma-separated list of
+			Port names (from /etc/services), port numbers
+			or port ranges; if the protocol is "icmp", this
+			column is interpreted as the destination
+			icmp-type(s).
+
+			If the protocol is ipp2p, this column is
+			interpreted as an ipp2p option without the
+			leading "--" (example "bit" for bit-torrent).
+			If no PORT is given, "ipp2p" is assumed.
+
+			This column is ignored if PROTOCOL = all but
+			must be entered if any of the following field
+			is supplied. In that case, it is suggested that
+			this field contain "-"
+
+	SOURCE PORT(S)	(Optional) Source port(s). If omitted,
+			any source port is acceptable. Specified as a
+			comma-separated list of port names, port
+			numbers or port ranges.
+
+	INTERFACE	The interface that the packet is to be routed
+			out of. If you do not specify this field then
+			you must place "-" in this column and enter an
+			IP address in the GATEWAY column.
+
+	GATEWAY		The gateway that the packet is to be forewarded
+			through.
 -----------------------------------------------------------------------
 Problems corrected in version 2.3.1
 

Shorewall2/shorewall

@@ -723,6 +723,7 @@ show_reset() {
 	echo "Counters reset $(cat $STATEDIR/restarted)" && \
 	echo
 }
+
 #
 # Display's the passed file name followed by "=" and the file's contents.
 #