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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 bridge_attach_device() { | |
23 | local bridge=${1} | |
24 | local device=${2} | |
25 | ||
26 | assert isset bridge | |
27 | assert isset device | |
28 | ||
29 | assert device_exists ${bridge} | |
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30 | |
31 | if ! device_exists ${device}; then | |
32 | log WARN "Could not attach '${device}' to '${bridge}' becase device does not exist." | |
33 | return ${EXIT_ERROR} | |
34 | fi | |
837995e6 MT |
35 | |
36 | # If device is already attached, exit silently | |
37 | if listmatch ${device} $(bridge_get_members ${bridge}); then | |
38 | return ${EXIT_OK} | |
39 | fi | |
40 | ||
41 | log INFO "Attaching device '${device}' to bridge '${bridge}'." | |
42 | ||
43 | brctl addif ${bridge} ${device} | |
44 | } | |
45 | ||
46 | function bridge_detach_device() { | |
47 | local bridge=${1} | |
48 | local device=${2} | |
49 | ||
50 | assert isset bridge | |
51 | assert isset device | |
52 | ||
53 | if ! device_exists ${bridge}; then | |
54 | error "Bridge '${bridge}' does not exist." | |
55 | return ${EXIT_ERROR} | |
56 | fi | |
57 | ||
58 | if ! device_exists ${device}; then | |
000ec6d3 MT |
59 | return ${EXIT_OK} |
60 | fi | |
61 | ||
62 | # If device is not attached, exit silently | |
63 | if ! listmatch ${device} $(bridge_get_members ${bridge}); then | |
64 | return ${EXIT_OK} | |
837995e6 MT |
65 | fi |
66 | ||
67 | log INFO "Detaching device '${device}' from bridge '${bridge}'." | |
68 | ||
69 | brctl delif ${bridge} ${device} | |
70 | } | |
71 | ||
72 | function bridge_get_members() { | |
73 | local bridge=${1} | |
74 | ||
75 | assert isset bridge | |
76 | ||
77 | local member | |
78 | for member in ${SYS_CLASS_NET}/${bridge}/brif/*; do | |
79 | member=$(basename ${member}) | |
80 | if device_exists ${member}; then | |
81 | echo "${member}" | |
82 | fi | |
83 | done | |
84 | } | |
85 | ||
86 | function bridge_is_forwarding() { | |
87 | local seconds=45 | |
88 | local zone=${1} | |
89 | ||
90 | bridge_has_carrier ${zone} || return ${EXIT_ERROR} | |
91 | ||
92 | local device | |
93 | while [ ${seconds} -gt 0 ]; do | |
94 | for device in ${SYS_CLASS_NET}/${zone}/brif/*; do | |
95 | [ -e "${device}/state" ] || continue | |
96 | if [ "$(<${device}/state)" = "3" ]; then | |
97 | return ${EXIT_OK} | |
98 | fi | |
99 | done | |
100 | sleep 1 | |
101 | seconds=$((${seconds} - 1)) | |
102 | done | |
103 | ||
104 | return ${EXIT_ERROR} | |
105 | } | |
106 | ||
107 | function bridge_has_carrier() { | |
108 | local zone=${1} | |
109 | ||
110 | local has_carrier=${EXIT_ERROR} | |
111 | ||
112 | local device | |
113 | for device in ${SYS_CLASS_NET}/${zone}/brif/*; do | |
114 | device=$(basename ${device}) | |
115 | device_exists ${device} || continue | |
116 | ||
117 | device_has_carrier ${device} && has_carrier=${EXIT_OK} | |
118 | done | |
119 | ||
120 | return ${has_carrier} | |
121 | } |