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05c234a8 MT |
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 | ||
e617226b MT |
22 | IP_SUPPORTED_PROTOCOLS="${IP_SUPPORTED_PROTOCOLS} ipv4" |
23 | ||
05c234a8 | 24 | function ipv4_is_valid() { |
fa6df98c | 25 | ipcalc --ipv4 -c $@ >/dev/null 2>&1 |
05c234a8 | 26 | |
fa6df98c MT |
27 | case "$?" in |
28 | 0) | |
29 | return ${EXIT_OK} | |
30 | ;; | |
31 | *) | |
38f61548 | 32 | return ${EXIT_ERROR} |
fa6df98c MT |
33 | ;; |
34 | esac | |
05c234a8 MT |
35 | } |
36 | ||
37 | function ipv4_detect_duplicate() { | |
38 | local device=${1} | |
39 | local address=${2} | |
40 | ||
41 | assert isset address | |
42 | assert isset device | |
43 | assert device_exists ${device} | |
44 | ||
785afa13 MT |
45 | # Don't check on PPP devices. |
46 | device_is_ppp ${device} && return ${EXIT_ERROR} | |
47 | ||
05c234a8 MT |
48 | if ! arping -q -c 2 -w 3 -D -I ${device} ${address}; then |
49 | log DEBUG "Detected duplicate address '${address}' on device '${device}'." | |
9eebfc55 | 50 | return ${EXIT_OK} |
05c234a8 MT |
51 | fi |
52 | ||
9eebfc55 | 53 | return ${EXIT_ERROR} |
05c234a8 MT |
54 | } |
55 | ||
56 | function ipv4_update_neighbours() { | |
57 | local device=${1} | |
58 | local address=${2} | |
59 | ||
785afa13 MT |
60 | # Don't do anything on PPP devices. |
61 | device_is_ppp ${device} && return ${EXIT_OK} | |
62 | ||
05c234a8 MT |
63 | arping -q -A -c 1 -I ${device} ${address} |
64 | ( sleep 2; arping -q -U -c 1 -I ${device} ${address} ) >/dev/null 2>&1 </dev/null & | |
65 | } | |
d5bace8d MT |
66 | |
67 | function ipv4_get_netaddress() { | |
68 | local address=${1} | |
69 | assert isset address | |
70 | ||
71 | local prefix=$(ip_get_prefix ${address}) | |
72 | assert isset prefix | |
73 | ||
74 | local NETWORK | |
75 | eval $(ipcalc --network ${address}) | |
76 | assert isset NETWORK | |
77 | ||
78 | echo "${NETWORK}/${prefix}" | |
79 | ||
80 | return ${EXIT_OK} | |
81 | } | |
e9ea243e MT |
82 | |
83 | function ipv4_get_prefix() { | |
84 | local address=${1} | |
85 | local broadcast=${2} | |
86 | ||
87 | assert isset address | |
88 | assert isset broadcast | |
89 | ||
90 | local PREFIX | |
91 | eval $(ipcalc --prefix ${address} ${broadcast}) | |
92 | assert isset PREFIX | |
93 | ||
94 | echo "${PREFIX}" | |
95 | return ${EXIT_OK} | |
96 | } | |
97 | ||
98 | function ipv4_flush_device() { | |
99 | # | |
100 | # Flushes all routes, addresses from the device | |
101 | # and clears the ARP cache. | |
102 | # | |
103 | ||
104 | local device=${1} | |
105 | assert isset device | |
106 | ||
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 ${device} >/dev/null 2>&1 | |
110 | ||
111 | return 0 | |
6f49dbac | 112 | |
785afa13 MT |
113 | function ipv4_prefix2netmask() { |
114 | local prefix=${1} | |
115 | shift | |
116 | ||
117 | assert isinteger prefix | |
118 | ||
119 | # XXX this function is a stub | |
120 | ||
121 | case "${prefix}" in | |
122 | 24) | |
123 | echo "255.255.255.0" | |
124 | ;; | |
125 | *) | |
126 | assert false NOT IMPLEMENTED | |
127 | ;; | |
128 | esac | |
e9ea243e | 129 | } |