2 ###############################################################################
4 # IPFire.org - A linux based firewall #
5 # Copyright (C) 2010 Michael Tremer & Christian Schmidt #
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. #
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. #
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/>. #
20 ###############################################################################
22 IP_SUPPORTED_PROTOCOLS
="${IP_SUPPORTED_PROTOCOLS} ipv4"
24 function ipv4_is_valid
() {
25 ipcalc
--ipv4 -c $@
>/dev
/null
2>&1
37 function ipv4_detect_duplicate
() {
43 assert device_exists
${device}
45 # Don't check on PPP devices.
46 device_is_ppp
${device} && return ${EXIT_ERROR}
48 if ! arping
-q -c 2 -w 3 -D -I ${device} ${address}; then
49 log DEBUG
"Detected duplicate address '${address}' on device '${device}'."
56 function ipv4_update_neighbours
() {
60 # Don't do anything on PPP devices.
61 device_is_ppp
${device} && return ${EXIT_OK}
63 arping
-q -A -c 1 -I ${device} ${address}
64 ( sleep 2; arping
-q -U -c 1 -I ${device} ${address} ) >/dev
/null
2>&1 </dev
/null
&
67 function ipv4_get_netaddress
() {
71 local prefix
=$
(ip_get_prefix
${address})
75 eval $
(ipcalc
--network ${address})
78 echo "${NETWORK}/${prefix}"
83 function ipv4_get_prefix
() {
88 assert isset broadcast
91 eval $
(ipcalc
--prefix ${address} ${broadcast})
98 function ipv4_flush_device
() {
100 # Flushes all routes, addresses from the device
101 # and clears the ARP cache.
107 ip
-4 addr flush dev
${device} >/dev
/null
2>&1
108 ip
-4 route flush dev
${device} >/dev
/null
2>&1
109 ip
-4 neigh flush dev
${device} >/dev
/null
2>&1
114 function ipv4_prefix2netmask
() {
118 assert isinteger prefix
120 # XXX this function is a stub
127 assert false NOT IMPLEMENTED