]>
Commit | Line | Data |
---|---|---|
4231f419 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} ipv6" |
23 | ||
58fb41ee MT |
24 | function ipv6_init() { |
25 | log INFO "Initializing IPv6 networking." | |
26 | ||
27 | # Enable forwarding on all devices | |
28 | ipv6_device_forwarding_disable all | |
29 | ipv6_device_forwarding_disable default | |
30 | ||
31 | # Disable autoconfiguration on all devices per default | |
32 | ipv6_device_autoconf_disable all | |
33 | ipv6_device_autoconf_disable default | |
34 | ||
35 | # XXX do we need this? | |
36 | #local device | |
37 | #for device in $(devices_get_all); do | |
38 | # ipv6_device_forwarding_disable ${device} | |
39 | # ipv6_device_autoconf_disable ${device} | |
40 | #done | |
41 | } | |
42 | ||
43 | init_register ipv6_init | |
44 | ||
4231f419 MT |
45 | function ipv6_device_autoconf_enable() { |
46 | local device=${1} | |
47 | ||
58fb41ee MT |
48 | assert isset device |
49 | ||
50 | # Allow setting default and all settings | |
51 | if ! isoneof device all default; then | |
52 | assert device_exists ${device} | |
4231f419 MT |
53 | fi |
54 | ||
58fb41ee MT |
55 | local val |
56 | for val in accept_ra accept_redirects; do | |
57 | echo 1 > /proc/sys/net/ipv6/conf/${device}/${val} | |
58 | done | |
4231f419 MT |
59 | } |
60 | ||
61 | function ipv6_device_autoconf_disable() { | |
62 | local device=${1} | |
63 | ||
58fb41ee MT |
64 | assert isset device |
65 | ||
66 | # Allow setting default and all settings | |
67 | if ! isoneof device all default; then | |
68 | assert device_exists ${device} | |
69 | fi | |
70 | ||
71 | local val | |
72 | for val in accept_ra accept_redirects; do | |
73 | echo 0 > /proc/sys/net/ipv6/conf/${device}/${val} | |
74 | done | |
75 | } | |
76 | ||
77 | function ipv6_device_forwarding_enable() { | |
78 | local device=${1} | |
79 | ||
80 | assert isset device | |
81 | ||
82 | # Allow setting default and all settings | |
83 | if ! isoneof device all default; then | |
84 | assert device_exists ${device} | |
85 | fi | |
86 | ||
87 | echo 1 > /proc/sys/net/ipv6/conf/${device}/forwarding | |
88 | } | |
89 | ||
90 | function ipv6_device_forwarding_disable() { | |
91 | local device=${1} | |
92 | ||
93 | assert isset device | |
94 | ||
95 | # Allow setting default and all settings | |
96 | if ! isoneof device all default; then | |
97 | assert device_exists ${device} | |
4231f419 MT |
98 | fi |
99 | ||
58fb41ee MT |
100 | echo 0 > /proc/sys/net/ipv6/conf/${device}/forwarding |
101 | } | |
102 | ||
103 | # Enable IPv6 RFC3041 privacy extensions if desired | |
104 | function ipv6_device_privacy_extensions_enable() { | |
105 | local device=${1} | |
106 | local type=${2} | |
107 | ||
108 | assert isset device | |
109 | assert device_exists ${device} | |
110 | ||
111 | # Default value is rfc3041 | |
112 | if [ -z "${type}" ]; then | |
113 | type="rfc3041" | |
114 | fi | |
115 | ||
116 | assert isset type | |
117 | ||
118 | case "${type}" in | |
119 | rfc3041) | |
120 | echo 2 > /proc/sys/net/ipv6/conf/${device}/use_tempaddr | |
121 | ;; | |
122 | *) | |
123 | error_log "Given type '${type}' is not supported." | |
124 | return ${EXIT_ERROR} | |
125 | ;; | |
126 | esac | |
127 | ||
128 | return ${EXIT_OK} | |
129 | } | |
130 | ||
131 | function ipv6_device_privacy_extensions_disable() { | |
132 | local device=${1} | |
133 | ||
134 | assert isset device | |
135 | assert device_exists ${device} | |
136 | ||
137 | echo 0 > /proc/sys/net/ipv6/conf/${device}/use_tempaddr | |
4231f419 MT |
138 | } |
139 | ||
140 | function ipv6_is_valid() { | |
141 | local address=${1} | |
142 | ||
58fb41ee MT |
143 | assert isset address |
144 | ||
4231f419 MT |
145 | # Check length |
146 | [ ${#address} -gt 39 ] && return ${EXIT_ERROR} | |
147 | ||
148 | # XXX find :: twice? | |
149 | # XXX check for documentation prefix? | |
150 | ||
151 | # Check for bad characters | |
152 | local char | |
153 | for char in 0 1 2 3 4 5 6 7 8 9 a b c d e f :; do | |
154 | address=${address//${char}/} | |
155 | done | |
156 | [ -n "${address}" ] && return ${EXIT_ERROR} | |
157 | ||
158 | return ${EXIT_OK} | |
159 | } | |
160 | ||
161 | function ipv6_implode() { | |
162 | local address=${1} | |
163 | ||
58fb41ee MT |
164 | assert isset address |
165 | ||
4231f419 MT |
166 | if ! ipv6_is_valid ${address}; then |
167 | error "IPv6 address is invalid: ${address}" | |
168 | return ${EXIT_ERROR} | |
169 | fi | |
170 | ||
171 | # Make proper address in exploded format | |
172 | address=$(ipv6_explode ${address}) | |
173 | ||
174 | local block | |
175 | local char | |
176 | local i | |
177 | ||
178 | local address_new | |
179 | local block_new | |
180 | ||
181 | for block in ${address//:/\ }; do | |
182 | block_new= | |
183 | for i in $(seq 0 ${#block}); do | |
184 | char="${block:${i}:1}" | |
185 | ||
186 | [ -z "${char}" ] && continue | |
187 | ||
188 | if [ -z "${block_new}" ] && [ "${char}" = "0" ]; then | |
189 | continue | |
190 | fi | |
191 | ||
192 | block_new="${block_new}${char}" | |
193 | done | |
194 | ||
195 | [ -z "${block_new}" ] && block_new="0" | |
196 | ||
197 | address_new="${address_new}:${block_new}" | |
198 | done | |
199 | ||
200 | # Cut first colon (:) | |
201 | address="${address_new:1:${#address_new}}" | |
202 | ||
203 | local match | |
204 | local matches=() | |
205 | local pattern | |
206 | local pos_start | |
207 | local pos_next | |
208 | for pos_start in $(seq 0 ${#address}); do | |
209 | matches["${pos_start}"]=0 | |
210 | ||
211 | for pos_next in $(seq ${pos_start} 2 ${#address}); do | |
212 | case "${pos_start}" in | |
213 | 0) | |
214 | match="${address:${pos_next}:2}" | |
215 | pattern="0:" | |
216 | ;; | |
217 | *) | |
218 | match="${address:${pos_next}:2}" | |
219 | pattern=":0" | |
220 | ;; | |
221 | esac | |
222 | ||
223 | [ -z "${match}" ] && continue | |
224 | ||
225 | if [ "${match}" = "${pattern}" ]; then | |
226 | matches[${pos_start}]=$(( matches[${pos_start}] + 1)) | |
227 | else | |
228 | break | |
229 | fi | |
230 | done | |
231 | done | |
232 | ||
233 | local pos_best | |
234 | local pos_best_val=0 | |
235 | for i in $(seq 0 ${#matches[@]}); do | |
236 | [ -z "${matches[${i}]}" ] && continue | |
237 | ||
238 | if [ ${matches[${i}]} -gt ${pos_best_val} ]; then | |
239 | pos_best=${i} | |
240 | pos_best_val=${matches[${i}]} | |
241 | fi | |
242 | done | |
243 | ||
244 | if [ -n "${pos_best}" ]; then | |
245 | address_new="${address:0:${pos_best}}::" | |
246 | ||
247 | local pos_end=$(( ${pos_best_val} * 2 + ${pos_best} + 1)) | |
248 | ||
249 | if [ "${pos_best}" = "0" ]; then | |
250 | pos_end=$(( ${pos_end} - 1 )) | |
251 | fi | |
252 | ||
253 | address="${address_new}${address:${pos_end}:${#address}}" | |
254 | fi | |
255 | ||
256 | assert ipv6_is_valid ${address} | |
257 | ||
258 | echo "${address}" | |
259 | } | |
260 | ||
261 | function ipv6_explode() { | |
262 | local address=${1} | |
263 | ||
58fb41ee MT |
264 | assert isset address |
265 | ||
4231f419 MT |
266 | if [ ${#address} -eq 39 ]; then |
267 | echo "${address}" | |
268 | return ${EXIT_OK} | |
269 | fi | |
270 | ||
271 | address=${address//::/:X:} | |
272 | ||
273 | local block | |
274 | local block_count=0 | |
275 | local block_id | |
276 | local block_max=8 | |
277 | local blocks=() | |
278 | ||
279 | for block in ${address//:/\ }; do | |
280 | blocks[${block_count}]=${block} | |
281 | ||
282 | block_count=$(( ${block_count} + 1 )) | |
283 | done | |
284 | ||
285 | if [ ${#blocks[@]} -lt ${block_max} ]; then | |
286 | for block_id in $(seq ${#blocks[@]} -1 0); do | |
287 | block=${blocks[${block_id}]} | |
288 | ||
289 | [ -z "${block}" ] && continue | |
290 | ||
291 | if [ "${block}" = "X" ]; then | |
292 | blocks[${block_id}]="0000" | |
293 | break | |
294 | fi | |
295 | ||
296 | blocks[$(( ${block_max} - ${block_count} + ${block_id} ))]=${block} | |
297 | blocks[${block_id}]="0000" | |
298 | done | |
299 | fi | |
300 | ||
301 | for block_id in $(seq 0 ${#blocks[@]}); do | |
302 | block=${blocks[${block_id}]} | |
303 | ||
304 | [ -z "${block}" ] && block="0000" | |
305 | ||
306 | while [ "${#block}" -lt 4 ]; do | |
307 | block="0${block}" | |
308 | done | |
309 | ||
310 | blocks[${block_id}]=${block} | |
311 | done | |
312 | ||
313 | address= | |
314 | for block in ${blocks[@]}; do | |
315 | address="${address}:${block}" | |
316 | done | |
317 | address=${address:1:39} | |
318 | ||
319 | assert ipv6_is_valid ${address} | |
320 | ||
321 | echo "${address}" | |
322 | } | |
323 | ||
324 | function ipv6_hash() { | |
325 | local address=${1} | |
326 | ||
58fb41ee MT |
327 | assert isset address |
328 | ||
4231f419 MT |
329 | # Explode address |
330 | address=$(ipv6_explode ${address}) | |
331 | ||
332 | echo "${address//:/}" | |
333 | } |