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