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1 | #!/bin/bash |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2010 Michael Tremer & Christian Schmidt # | |
6 | # # | |
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. # | |
11 | # # | |
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. # | |
16 | # # | |
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/>. # | |
19 | # # | |
20 | ############################################################################### | |
21 | ||
22 | function routing_has_default() { | |
23 | ip route | grep -q "^default" | |
24 | } | |
25 | ||
26 | function routing_default_update() { | |
ff8ec5ef MT |
27 | local routes |
28 | ||
b816e04b MT |
29 | local zones=$(zones_get_nonlocal) |
30 | if [ -z "${zones}" ]; then | |
31 | zones=$(zones_get_local) | |
32 | fi | |
33 | ||
ff8ec5ef | 34 | local gateway |
201b7dff | 35 | local proto |
ff8ec5ef | 36 | local weight |
b816e04b | 37 | local zone |
e817357d | 38 | local cmd |
ff8ec5ef | 39 | |
201b7dff MT |
40 | for proto in ${IP_SUPPORTED_PROTOCOLS}; do |
41 | # Clear routes | |
42 | routes="" | |
ff8ec5ef | 43 | |
e817357d MT |
44 | cmd="ip $([ "${proto}" = "ipv6" ] && echo "-6") route" |
45 | ||
201b7dff MT |
46 | for zone in ${zones}; do |
47 | # Skip if zone is not up | |
48 | routing_db_exists ${zone} ${proto} || continue | |
ff8ec5ef | 49 | |
201b7dff MT |
50 | if [ "$(routing_db_get ${zone} ${proto} active)" = "1" ]; then |
51 | gateway=$(routing_db_get ${zone} ${proto} remote-ip-address) | |
86fae95d MT |
52 | [ -z "${gateway}" ] && continue |
53 | ||
201b7dff | 54 | weight=$(routing_db_get ${zone} ${proto} weight) |
ff8ec5ef | 55 | |
86fae95d | 56 | assert device_exists ${zone} |
e817357d MT |
57 | if device_is_ppp ${zone}; then |
58 | routes="${routes} dev ${zone}" | |
59 | else | |
60 | routes="${routes} nexthop via ${gateway}" | |
61 | fi | |
b816e04b | 62 | |
201b7dff MT |
63 | if [ -n "${weight}" ]; then |
64 | routes="${routes} weight ${weight}" | |
65 | fi | |
66 | else | |
67 | log DEBUG "Ignoring zone '${zone}' which is not active." | |
ff8ec5ef | 68 | fi |
201b7dff | 69 | done |
ff8ec5ef | 70 | |
e817357d MT |
71 | # Remove too much spaces. |
72 | routes=$(echo ${routes}) | |
b816e04b | 73 | |
e817357d MT |
74 | # Remove all default routes. |
75 | while ${cmd} | grep -q "^default"; do | |
76 | ${cmd} del default | |
77 | done | |
78 | ||
79 | if [ -z "${routes}" ]; then | |
80 | log INFO "Removed default route for ${proto}." | |
201b7dff | 81 | return ${EXIT_OK} |
ff8ec5ef | 82 | fi |
ff8ec5ef | 83 | |
201b7dff | 84 | log INFO "Setting default route for ${proto}: ${routes}" |
b816e04b | 85 | |
e817357d | 86 | ${cmd} add default ${routes} |
201b7dff | 87 | assert [ $? -eq 0 ] |
e817357d MT |
88 | |
89 | case "${proto}" in | |
90 | ipv6) | |
91 | # Apply radvd configuration. | |
92 | radvd_update | |
93 | ;; | |
94 | esac | |
201b7dff | 95 | done |
ff8ec5ef MT |
96 | } |
97 | ||
98 | function routing_table_exists() { | |
99 | local zone=${1} | |
100 | ||
101 | grep -q "${zone}$" < /etc/iproute2/rt_tables | |
102 | } | |
103 | ||
104 | function routing_table_create() { | |
105 | local zone=${1} | |
106 | ||
ff8ec5ef MT |
107 | if routing_table_exists ${zone}; then |
108 | return ${EXIT_OK} | |
109 | fi | |
110 | ||
111 | log INFO "Creating routing table for zone '${zone}'" | |
112 | ||
113 | local id=$(( ${zone#red} + 1 )) | |
114 | ||
115 | echo "${id} ${zone}" >> /etc/iproute2/rt_tables | |
116 | } | |
117 | ||
118 | function routing_table_remove() { | |
119 | : # XXX do we need this? | |
120 | } | |
b816e04b MT |
121 | |
122 | function routing_db_path() { | |
123 | local zone=${1} | |
124 | local proto=${2} | |
125 | ||
126 | assert isset zone | |
127 | assert isset proto | |
128 | assert isoneof proto ${IP_SUPPORTED_PROTOCOLS} | |
129 | ||
130 | echo "${ROUTING_DB_DIR}/${zone}/${proto}" | |
131 | } | |
132 | ||
133 | function routing_db_exists() { | |
134 | [ -d "$(routing_db_path $@)" ] | |
135 | } | |
136 | ||
137 | function routing_db_create() { | |
138 | routing_db_exists $@ && return ${EXIT_OK} | |
139 | ||
140 | mkdir -p $(routing_db_path $@) | |
141 | } | |
142 | ||
143 | function routing_db_remove() { | |
144 | rm -rf $(routing_db_path $@) | |
145 | } | |
146 | ||
147 | function routing_db_set() { | |
148 | local zone=${1} | |
149 | local proto=${2} | |
150 | local parameter=${3} | |
151 | shift 3 | |
152 | ||
153 | local value="$@" | |
154 | ||
155 | log INFO "Updating database (${zone} - ${proto}): ${parameter} = ${value}" | |
156 | ||
157 | routing_db_create ${zone} ${proto} | |
158 | ||
159 | echo "${value}" > $(routing_db_path ${zone} ${proto})/${parameter} | |
160 | } | |
161 | ||
162 | function routing_db_get() { | |
163 | local zone=${1} | |
164 | local proto=${2} | |
165 | local parameter=${3} | |
166 | shift 3 | |
167 | ||
168 | cat $(routing_db_path ${zone} ${proto})/${parameter} 2>/dev/null | |
169 | } | |
170 | ||
171 | function routing_db_from_ppp() { | |
172 | local zone=${1} | |
173 | local proto=${2} | |
174 | ||
2c973348 MT |
175 | assert isset zone |
176 | assert isset proto | |
177 | ||
b816e04b MT |
178 | # Save ppp configuration |
179 | routing_db_set ${zone} ${proto} type "ppp" | |
201b7dff MT |
180 | |
181 | if [ "${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} | |
187 | fi | |
b816e04b MT |
188 | |
189 | routing_db_set ${zone} ${proto} dns ${PPP_DNS1} ${PPP_DNS2} | |
190 | ||
191 | routing_db_set ${zone} ${proto} remote-address ${PPP_MACREMOTE,,} | |
192 | } | |
193 | ||
194 | function routing_update() { | |
195 | local zone=${1} | |
2c973348 | 196 | assert isset zone |
b816e04b MT |
197 | |
198 | # Nothing to do for local zones. | |
199 | if zone_is_local ${zone}; then | |
200 | return ${EXIT_OK} | |
201 | fi | |
202 | ||
203 | local proto=${2} | |
204 | local table=${zone} | |
2c973348 | 205 | assert isset proto |
b816e04b MT |
206 | |
207 | # Create routing table if not exists | |
208 | routing_table_create ${table} | |
209 | ||
210 | log DEBUG "Flushing routing table ${table}" | |
211 | cmd ip route flush table ${table} | |
212 | ||
213 | local local_ip_address=$(routing_db_get ${zone} ${proto} local-ip-address) | |
d5bace8d | 214 | local remote_ip_address=$(routing_db_get ${zone} ${proto} remote-ip-address) |
b816e04b MT |
215 | |
216 | # XXX does not work. | |
d5bace8d MT |
217 | case "${proto}" in |
218 | ipv4) | |
219 | local net_address=$(ipv4_get_netaddress ${local_ip_address}) | |
220 | ||
221 | log DEBUG "Adding route for subnet ${local_ip_address} to table ${table}" | |
222 | cmd ip route add table ${table} ${net_address} dev ${zone} | |
223 | ;; | |
224 | esac | |
b816e04b MT |
225 | |
226 | if isset remote_ip_address; then | |
227 | log DEBUG "Adding default route for table ${table}" | |
228 | ||
229 | cmd ip route add table ${table} default nexthop via ${remote_ip_address} | |
230 | fi | |
231 | ||
232 | cmd ip rule add from ${local_ip_address} lookup ${table} | |
233 | } |