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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 | IP_SUPPORTED_PROTOCOLS="${IP_SUPPORTED_PROTOCOLS} ipv4" | |
23 | ||
24 | function ipv4_is_valid() { | |
25 | ipcalc --ipv4 -c $@ >/dev/null 2>&1 | |
26 | ||
27 | case "$?" in | |
28 | 0) | |
29 | return ${EXIT_OK} | |
30 | ;; | |
31 | *) | |
32 | return ${EXIT_ERROR} | |
33 | ;; | |
34 | esac | |
35 | } | |
36 | ||
37 | function ipv4_detect_duplicate() { | |
38 | local device=${1} | |
39 | local address=${2} | |
40 | ||
41 | assert isset address | |
42 | assert isset device | |
43 | assert device_exists ${device} | |
44 | ||
45 | if ! arping -q -c 2 -w 3 -D -I ${device} ${address}; then | |
46 | log DEBUG "Detected duplicate address '${address}' on device '${device}'." | |
47 | return ${EXIT_OK} | |
48 | fi | |
49 | ||
50 | return ${EXIT_ERROR} | |
51 | } | |
52 | ||
53 | function ipv4_update_neighbours() { | |
54 | local device=${1} | |
55 | local address=${2} | |
56 | ||
57 | arping -q -A -c 1 -I ${device} ${address} | |
58 | ( sleep 2; arping -q -U -c 1 -I ${device} ${address} ) >/dev/null 2>&1 </dev/null & | |
59 | } | |
60 | ||
61 | function ipv4_get_netaddress() { | |
62 | local address=${1} | |
63 | assert isset address | |
64 | ||
65 | local prefix=$(ip_get_prefix ${address}) | |
66 | assert isset prefix | |
67 | ||
68 | local NETWORK | |
69 | eval $(ipcalc --network ${address}) | |
70 | assert isset NETWORK | |
71 | ||
72 | echo "${NETWORK}/${prefix}" | |
73 | ||
74 | return ${EXIT_OK} | |
75 | } |