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1 | #!/bin/bash | |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2012 IPFire Network Development 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 | PROC_NET_VLAN="/proc/net/vlan" | |
23 | PROC_NET_VLAN_CONFIG="${PROC_NET_VLAN}/config" | |
24 | ||
25 | VLAN_PORT_INTERFIX="v" | |
26 | ||
27 | vlan_init() { | |
28 | ebtables-restore <<EOF | |
29 | *filter | |
30 | :INPUT ACCEPT | |
31 | :FORWARD ACCEPT | |
32 | :OUTPUT ACCEPT | |
33 | ||
34 | *broute | |
35 | :BROUTING ACCEPT | |
36 | -A BROUTING -p 802_1Q -j DROP | |
37 | EOF | |
38 | } | |
39 | ||
40 | vlan_create() { | |
41 | local device=${1} | |
42 | assert isset device | |
43 | ||
44 | local parent=${2} | |
45 | assert isset parent | |
46 | ||
47 | local tag=${3} | |
48 | assert isinteger tag | |
49 | ||
50 | local address=${4} | |
51 | if isset address; then | |
52 | assert ismac address | |
53 | fi | |
54 | ||
55 | # Check if a device with the name does already exist. | |
56 | if device_exists ${device}; then | |
57 | log ERROR "device '${device}' does already exist" | |
58 | return ${EXIT_ERROR} | |
59 | fi | |
60 | ||
61 | # Check if the parent device exists. | |
62 | if ! device_exists ${parent}; then | |
63 | log ERROR "parent device '${parent}' does not exist" | |
64 | return ${EXIT_ERROR} | |
65 | fi | |
66 | ||
67 | # Load ebtables stuff. | |
68 | vlan_init | |
69 | ||
70 | local command="ip link add link ${parent} name ${device}" | |
71 | ||
72 | if isset address; then | |
73 | command="${command} address ${address}" | |
74 | fi | |
75 | ||
76 | command="${command} type vlan id ${tag}" | |
77 | ||
78 | cmd_quiet ${command} | |
79 | local ret=$? | |
80 | ||
81 | if [ ${ret} -eq ${EXIT_OK} ]; then | |
82 | log DEBUG "vlan device '${device}' has been created" | |
83 | else | |
84 | log ERROR "could not create vlan device '${device}': ${ret}" | |
85 | fi | |
86 | ||
87 | return ${ret} | |
88 | } | |
89 | ||
90 | vlan_remove() { | |
91 | device_delete "$@" | |
92 | } | |
93 | ||
94 | vlan_get_parent() { | |
95 | local device=${1} | |
96 | assert isset device | |
97 | ||
98 | # Nothing to do, if 8021q module is not loaded. | |
99 | [ -r "${PROC_NET_VLAN_CONFIG}" ] || return ${EXIT_OK} | |
100 | ||
101 | local dev spacer1 id spacer2 parent | |
102 | while read dev spacer1 id spacer2 parent; do | |
103 | [ "${device}" = "${dev}" ] || continue | |
104 | ||
105 | print "${parent}" | |
106 | return ${EXIT_OK} | |
107 | done < ${PROC_NET_VLAN_CONFIG} | |
108 | ||
109 | return ${EXIT_ERROR} | |
110 | } | |
111 | ||
112 | vlan_get_id() { | |
113 | local device=${1} | |
114 | assert isset device | |
115 | ||
116 | # Nothing to do, if 8021q module is not loaded. | |
117 | [ -r "${PROC_NET_VLAN_CONFIG}" ] || return ${EXIT_OK} | |
118 | ||
119 | local dev spacer1 id spacer2 parent | |
120 | while read dev spacer1 id spacer2 parent; do | |
121 | [ "${device}" = "${dev}" ] || continue | |
122 | ||
123 | print "${id}" | |
124 | return ${EXIT_OK} | |
125 | done < ${PROC_NET_VLAN_CONFIG} | |
126 | ||
127 | return ${EXIT_ERROR} | |
128 | } | |
129 | ||
130 | vlan_get_by_parent_and_vid() { | |
131 | local parent=${1} | |
132 | assert isset parent | |
133 | ||
134 | local vid=${2} | |
135 | assert isset vid | |
136 | ||
137 | # Nothing to do, if 8021q module is not loaded. | |
138 | [ -r "${PROC_NET_VLAN_CONFIG}" ] || return ${EXIT_OK} | |
139 | ||
140 | local dev spacer1 id spacer2 par | |
141 | while read dev spacer1 id spacer2 par; do | |
142 | [ "${parent}" = "${par}" ] || continue | |
143 | [ "${vid}" = "${id}" ] || continue | |
144 | ||
145 | print "${dev}" | |
146 | return ${EXIT_OK} | |
147 | done < ${PROC_NET_VLAN_CONFIG} | |
148 | ||
149 | return ${EXIT_ERROR} | |
150 | } |