]>
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} ${proto} remote-ip-address
)
52 [ -z "${gateway}" ] && continue
54 weight
=$
(routing_db_get
${zone} ${proto} weight
)
56 assert device_exists
${zone}
57 if device_is_ppp
${zone}; then
58 routes
="${routes} dev ${zone}"
60 routes
="${routes} nexthop via ${gateway}"
63 if [ -n "${weight}" ]; then
64 routes
="${routes} weight ${weight}"
67 log DEBUG
"Ignoring zone '${zone}' which is not active."
71 # Remove too much spaces.
72 routes
=$
(echo ${routes})
74 # Remove all default routes.
75 while ${cmd} |
grep -q "^default"; do
79 if [ -z "${routes}" ]; then
80 log INFO
"Removed default route for ${proto}."
84 log INFO
"Setting default route for ${proto}: ${routes}"
86 ${cmd} add default
${routes}
91 # Apply radvd configuration.
98 function routing_table_exists
() {
101 grep -q "${zone}$" < /etc
/iproute
2/rt_tables
104 function routing_table_create
() {
107 if routing_table_exists
${zone}; then
111 log INFO
"Creating routing table for zone '${zone}'"
113 local id
=$
(( ${zone#red} + 1 ))
115 echo "${id} ${zone}" >> /etc
/iproute
2/rt_tables
118 function routing_table_remove
() {
119 : # XXX do we need this?
122 function routing_db_path
() {
128 assert isoneof proto
${IP_SUPPORTED_PROTOCOLS}
130 echo "${ROUTING_DB_DIR}/${zone}/${proto}"
133 function routing_db_exists
() {
134 [ -d "$(routing_db_path $@)" ]
137 function routing_db_create
() {
138 routing_db_exists $@
&& return ${EXIT_OK}
140 mkdir
-p $
(routing_db_path $@
)
143 function routing_db_remove
() {
144 rm -rf $
(routing_db_path $@
)
147 function routing_db_set
() {
155 log INFO
"Updating database (${zone} - ${proto}): ${parameter} = ${value}"
157 routing_db_create
${zone} ${proto}
159 echo "${value}" > $(routing_db_path ${zone} ${proto})/${parameter}
162 function routing_db_get() {
168 cat $(routing_db_path ${zone} ${proto})/${parameter} 2>/dev/null
171 function routing_db_from_ppp() {
178 # Save ppp configuration
179 routing_db_set ${zone} ${proto} type "ppp
"
181 if [ "${proto}" = "ipv6
" ]; then
182 routing_db_set ${zone} ${proto} local-ip-address ${PPP_LLLOCAL}
183 routing_db_set ${zone} ${proto} remote-ip-address ${PPP_LLREMOTE}
184 elif [ "${proto}" = "ipv4
" ]; then
185 routing_db_set ${zone} ${proto} local-ip-address ${PPP_IPLOCAL}
186 routing_db_set ${zone} ${proto} remote-ip-address ${PPP_IPREMOTE}
189 routing_db_set ${zone} ${proto} dns ${PPP_DNS1} ${PPP_DNS2}
191 routing_db_set ${zone} ${proto} remote-address ${PPP_MACREMOTE,,}
194 function routing_update() {
198 # Nothing to do for local zones.
199 if zone_is_local ${zone}; then
207 # Create routing table if not exists
208 routing_table_create ${table}
210 log DEBUG "Flushing routing table
${table}"
211 cmd ip route flush table ${table}
213 local local_ip_address=$(routing_db_get ${zone} ${proto} local-ip-address)
214 local remote_ip_address=$(routing_db_get ${zone} ${proto} remote-ip-address)
219 local net_address=$(ipv4_get_netaddress ${local_ip_address})
221 log DEBUG "Adding route
for subnet
${local_ip_address} to table
${table}"
222 cmd ip route add table ${table} ${net_address} dev ${zone}
226 if isset remote_ip_address; then
227 log DEBUG "Adding default route
for table
${table}"
229 cmd ip route add table ${table} default nexthop via ${remote_ip_address}
232 cmd ip rule add from ${local_ip_address} lookup ${table}