]>
git.ipfire.org Git - people/ms/network.git/blob - functions.routing
2 ###############################################################################
4 # IPFire.org - A linux based firewall #
5 # Copyright (C) 2010 Michael Tremer & Christian Schmidt #
7 # This program is free software: you can redistribute it and/or modify #
8 # it under the terms of the GNU General Public License as published by #
9 # the Free Software Foundation, either version 3 of the License, or #
10 # (at your option) any later version. #
12 # This program is distributed in the hope that it will be useful, #
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of #
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
15 # GNU General Public License for more details. #
17 # You should have received a copy of the GNU General Public License #
18 # along with this program. If not, see <http://www.gnu.org/licenses/>. #
20 ###############################################################################
22 function routing_has_default
() {
23 ip route |
grep -q "^default"
26 function routing_default_update
() {
29 local zones
=$
(zones_get_nonlocal
)
30 if [ -z "${zones}" ]; then
31 zones
=$
(zones_get_local
)
40 for proto
in ${IP_SUPPORTED_PROTOCOLS}; do
44 cmd
="ip $([ "${proto}" = "ipv6
" ] && echo "-6") route"
46 for zone
in ${zones}; do
47 # Skip if zone is not up
48 routing_db_exists
${zone} ${proto} ||
continue
50 if [ "$(routing_db_get ${zone} ${proto} active)" = "1" ]; then
51 gateway
=$
(routing_db_get
${zone} ${proto} remote-ip-address
)
53 # Go on if the device is not there anymore.
54 device_exists
${zone} ||
continue
56 # If we have got a Point-to-Point device, we will directly send all
57 # packets into the pipe.
58 if device_is_ptp
${zone}; then
59 routes
="${routes} dev ${zone}"
61 # On other devices, we will use the gateway if we got one.
62 elif isset gateway
; then
63 routes
="${routes} nexthop via ${gateway}"
65 # If none of the cases above apply, we cannot go on.
71 weight
=$
(routing_db_get
${zone} ${proto} weight
)
72 if isinteger
${weight}; then
73 routes
="${routes} weight ${weight}"
76 log DEBUG
"Ignoring zone '${zone}' which is not active."
80 # Remove too much spaces.
81 routes
=$
(echo ${routes})
83 # Remove all default routes.
84 while ${cmd} |
grep -q "^default"; do
88 if [ -z "${routes}" ]; then
89 log INFO
"Removed default route for ${proto}."
93 log INFO
"Setting default route for ${proto}: ${routes}"
95 cmd
${cmd} add default
${routes}
100 # Apply radvd configuration.
107 # XXX deprecated function
108 function routing_table_exists
() {
109 route_table_exists $@
112 # XXX deprecated function
113 function routing_table_create
() {
114 route_table_create $@
117 function routing_db_path
() {
123 assert isoneof proto
${IP_SUPPORTED_PROTOCOLS}
125 echo "${ROUTING_DB_DIR}/${zone}/${proto}"
128 function routing_db_exists
() {
129 [ -d "$(routing_db_path $@)" ]
132 function routing_db_create
() {
133 routing_db_exists $@
&& return ${EXIT_OK}
135 mkdir
-p $
(routing_db_path $@
)
138 function routing_db_remove
() {
139 rm -rf $
(routing_db_path $@
)
142 function routing_db_set
() {
150 log INFO
"Updating database (${zone} - ${proto}): ${parameter} = ${value}"
152 routing_db_create
${zone} ${proto}
154 echo "${value}" > $(routing_db_path ${zone} ${proto})/${parameter}
157 function routing_db_get() {
163 cat $(routing_db_path ${zone} ${proto})/${parameter} 2>/dev/null
166 function routing_db_from_ppp() {
173 # Save ppp configuration
174 routing_db_set ${zone} ${proto} type "ppp
"
176 if [ "${proto}" = "ipv6
" ]; then
177 routing_db_set ${zone} ${proto} local-ip-address ${PPP_LLLOCAL}
178 routing_db_set ${zone} ${proto} remote-ip-address ${PPP_LLREMOTE}
179 elif [ "${proto}" = "ipv4
" ]; then
180 routing_db_set ${zone} ${proto} local-ip-address ${PPP_IPLOCAL}
181 routing_db_set ${zone} ${proto} remote-ip-address ${PPP_IPREMOTE}
184 routing_db_set ${zone} ${proto} dns ${PPP_DNS1} ${PPP_DNS2}
186 routing_db_set ${zone} ${proto} remote-address ${PPP_MACREMOTE,,}
189 function routing_update() {
193 # Nothing to do for local zones.
194 if zone_is_local ${zone}; then
203 if [ "${proto}" = "ipv6
" ]; then
204 ip_cmd="${ip_cmd} -6"
207 # Create routing table if not exists
208 routing_table_create ${table}
210 log DEBUG "Flushing routing table
${table}"
211 cmd ${ip_cmd} route flush table ${table}
213 # Exit here if there is no routing information.
214 if ! routing_db_exists ${zone} ${proto}; then
218 local local_ip_address=$(routing_db_get ${zone} ${proto} local-ip-address)
219 local remote_ip_address=$(routing_db_get ${zone} ${proto} remote-ip-address)
223 local net_address=$(ipv4_get_netaddress ${local_ip_address})
225 log DEBUG "Adding route
for subnet
${local_ip_address} to table
${table}"
226 cmd ${ip_cmd} route add table ${table} ${net_address} dev ${zone}
230 log DEBUG "Adding default route
for table
${table}"
231 local routing_cmd="${ip_cmd} route add table
${table} default
"
232 if isset remote_ip_address; then
233 routing_cmd="${routing_cmd} via
${remote_ip_address}"
235 routing_cmd="${routing_cmd} dev
${zone}"
239 cmd ${ip_cmd} rule add from ${local_ip_address} lookup ${table}