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b8c153bc MT |
1 | #!/bin/bash |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2015 IPFire Team # | |
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 | shopt -s nullglob | |
23 | ||
24 | VPN_CONFIG="/var/ipfire/vpn/config" | |
25 | ||
54bac014 | 26 | eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings) |
b8c153bc MT |
27 | eval $(/usr/local/bin/readhash /var/ipfire/vpn/settings) |
28 | ||
29 | VARS=( | |
68263645 MT |
30 | id status name lefthost type ctype psk local local_id leftsubnets |
31 | remote_id remote rightsubnets x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 | |
1ca2f88a MT |
32 | x13 x14 x15 x16 x17 x18 x19 proto x20 x21 x22 |
33 | route x23 mode interface_mode interface_address interface_mtu rest | |
b8c153bc MT |
34 | ) |
35 | ||
36 | log() { | |
37 | logger -t ipsec "$@" | |
38 | } | |
39 | ||
f9dd1346 MT |
40 | resolve_hostname() { |
41 | local hostname="${1}" | |
42 | ||
43 | dig +short A "${hostname}" | tail -n1 | |
44 | } | |
45 | ||
b8c153bc | 46 | main() { |
b8c153bc MT |
47 | # Register local variables |
48 | local "${VARS[@]}" | |
49 | local action | |
50 | ||
51 | local interfaces=() | |
1ca2f88a | 52 | |
1a45f9a7 MT |
53 | # We are done when IPsec is not enabled |
54 | if [ "${ENABLED}" = "on" ]; then | |
55 | while IFS="," read -r "${VARS[@]}"; do | |
56 | # Check if the connection is enabled | |
57 | [ "${status}" = "on" ] || continue | |
58 | ||
59 | # Check if this a net-to-net connection | |
60 | [ "${type}" = "net" ] || continue | |
61 | ||
62 | # Determine the interface name | |
63 | case "${interface_mode}" in | |
64 | gre|vti) | |
65 | local intf="${interface_mode}${id}" | |
66 | ;; | |
67 | *) | |
68 | continue | |
69 | ;; | |
70 | esac | |
71 | ||
72 | # Add the interface to the list of all interfaces | |
73 | interfaces+=( "${intf}" ) | |
74 | ||
d985ce5a MT |
75 | # Compat for older connections |
76 | if [ "${local}" = "off" ]; then | |
77 | if [ "${VPN_IP}" = "%defaultroute" ]; then | |
78 | local="" | |
79 | else | |
80 | local="${VPN_IP}" | |
81 | fi | |
82 | fi | |
83 | ||
84 | # Handle %defaultroute | |
85 | if [ -z "${local}" ]; then | |
86 | if [ -r "/var/ipfire/red/local-ipaddress" ]; then | |
87 | local="$(</var/ipfire/red/local-ipaddress)" | |
88 | ||
89 | elif [ "${RED_TYPE}" = "STATIC" -a -n "${RED_ADDRESS}" ]; then | |
90 | local="${RED_ADDRESS}" | |
91 | fi | |
92 | fi | |
93 | ||
f9dd1346 MT |
94 | # Resolve any hostnames |
95 | if [[ ! ${remote} =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then | |
96 | remote="$(resolve_hostname "${remote}")" | |
97 | fi | |
98 | ||
1a45f9a7 | 99 | local args=( |
1ca2f88a MT |
100 | "local" "${local}" |
101 | "remote" "${remote}" | |
1a45f9a7 MT |
102 | ) |
103 | ||
6a45a1f1 MT |
104 | case "${interface_mode}" in |
105 | gre) | |
106 | # Add TTL | |
107 | args+=( "ttl" "255" ) | |
108 | ;; | |
109 | ||
110 | vti) | |
111 | # Add key for VTI | |
112 | args+=( "key" "${id}" ) | |
113 | ;; | |
114 | esac | |
b8c153bc | 115 | |
1a45f9a7 MT |
116 | # Update the settings when the interface already exists |
117 | if [ -d "/sys/class/net/${intf}" ]; then | |
118 | ip link change dev "${intf}" \ | |
119 | type "${interface_mode}" "${args[@]}" &>/dev/null | |
b8c153bc | 120 | |
1a45f9a7 MT |
121 | # Create a new interface and bring it up |
122 | else | |
123 | log "Creating interface ${intf}" | |
3dc21d43 MT |
124 | if ! ip link add name "${intf}" type "${interface_mode}" "${args[@]}"; then |
125 | log "Could not create interface ${intf}" | |
126 | continue | |
127 | fi | |
1a45f9a7 MT |
128 | fi |
129 | ||
130 | # Add an IP address | |
131 | ip addr flush dev "${intf}" | |
132 | ip addr add "${interface_address}" dev "${intf}" | |
133 | ||
134 | # Set MTU | |
135 | ip link set dev "${intf}" mtu "${interface_mtu}" | |
b8c153bc | 136 | |
1a45f9a7 MT |
137 | # Bring up the interface |
138 | ip link set dev "${intf}" up | |
139 | done < "${VPN_CONFIG}" | |
140 | fi | |
b8c153bc MT |
141 | |
142 | # Delete all other interfaces | |
143 | local intf | |
c821440c | 144 | for intf in /sys/class/net/gre[0-9]* /sys/class/net/vti[0-9]*; do |
b8c153bc MT |
145 | intf="$(basename "${intf}")" |
146 | ||
147 | # Ignore a couple of interfaces that cannot be deleted | |
148 | case "${intf}" in | |
149 | gre0|gretap0) | |
150 | continue | |
151 | ;; | |
152 | esac | |
153 | ||
154 | # Check if interface is on the list | |
155 | local i found="false" | |
156 | for i in ${interfaces[@]}; do | |
157 | if [ "${intf}" = "${i}" ]; then | |
158 | found="true" | |
159 | break | |
160 | fi | |
161 | done | |
162 | ||
163 | # Nothing to do if interface was found | |
164 | ${found} && continue | |
165 | ||
166 | # Delete the interface | |
167 | log "Deleting interface ${intf}" | |
168 | ip link del "${intf}" &>/dev/null | |
169 | done | |
a485606c MT |
170 | |
171 | # (Re-)Apply all static routes | |
172 | /etc/init.d/static-routes start | |
b8c153bc MT |
173 | } |
174 | ||
175 | main || exit $? |