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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 | |
f3ab2af9 MT |
28 | #ipv6_device_forwarding_disable all |
29 | #ipv6_device_forwarding_disable default | |
58fb41ee MT |
30 | |
31 | # Disable autoconfiguration on all devices per default | |
f3ab2af9 MT |
32 | #ipv6_device_autoconf_disable all |
33 | #ipv6_device_autoconf_disable default | |
58fb41ee MT |
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() { | |
fa6df98c | 141 | ipcalc --ipv6 -c $@ >/dev/null 2>&1 |
58fb41ee | 142 | |
fa6df98c MT |
143 | case "$?" in |
144 | 0) | |
145 | return ${EXIT_OK} | |
146 | ;; | |
147 | *) | |
38f61548 | 148 | return ${EXIT_ERROR} |
fa6df98c MT |
149 | ;; |
150 | esac | |
4231f419 MT |
151 | } |
152 | ||
cb965348 MT |
153 | function ipv6_prefix_is_valid() { |
154 | local prefix=${1} | |
155 | assert isset prefix | |
156 | ||
157 | [ ${prefix} -le 0 ] && return ${EXIT_FALSE} | |
158 | [ ${prefix} -gt 128 ] && return ${EXIT_FALSE} | |
159 | ||
160 | return ${EXIT_TRUE} | |
161 | } | |
162 | ||
4231f419 MT |
163 | function ipv6_implode() { |
164 | local address=${1} | |
165 | ||
58fb41ee MT |
166 | assert isset address |
167 | ||
4231f419 MT |
168 | if ! ipv6_is_valid ${address}; then |
169 | error "IPv6 address is invalid: ${address}" | |
170 | return ${EXIT_ERROR} | |
171 | fi | |
172 | ||
38f61548 MT |
173 | # Save prefix |
174 | local prefix=$(ip_get_prefix ${address}) | |
175 | address=$(ip_split_prefix ${address}) | |
176 | ||
4231f419 MT |
177 | # Make proper address in exploded format |
178 | address=$(ipv6_explode ${address}) | |
179 | ||
180 | local block | |
181 | local char | |
182 | local i | |
183 | ||
184 | local address_new | |
185 | local block_new | |
186 | ||
187 | for block in ${address//:/\ }; do | |
188 | block_new= | |
189 | for i in $(seq 0 ${#block}); do | |
190 | char="${block:${i}:1}" | |
191 | ||
192 | [ -z "${char}" ] && continue | |
193 | ||
194 | if [ -z "${block_new}" ] && [ "${char}" = "0" ]; then | |
195 | continue | |
196 | fi | |
197 | ||
198 | block_new="${block_new}${char}" | |
199 | done | |
200 | ||
201 | [ -z "${block_new}" ] && block_new="0" | |
202 | ||
203 | address_new="${address_new}:${block_new}" | |
204 | done | |
205 | ||
206 | # Cut first colon (:) | |
207 | address="${address_new:1:${#address_new}}" | |
208 | ||
209 | local match | |
210 | local matches=() | |
211 | local pattern | |
212 | local pos_start | |
213 | local pos_next | |
214 | for pos_start in $(seq 0 ${#address}); do | |
215 | matches["${pos_start}"]=0 | |
216 | ||
217 | for pos_next in $(seq ${pos_start} 2 ${#address}); do | |
218 | case "${pos_start}" in | |
219 | 0) | |
220 | match="${address:${pos_next}:2}" | |
221 | pattern="0:" | |
222 | ;; | |
223 | *) | |
224 | match="${address:${pos_next}:2}" | |
225 | pattern=":0" | |
226 | ;; | |
227 | esac | |
228 | ||
229 | [ -z "${match}" ] && continue | |
230 | ||
231 | if [ "${match}" = "${pattern}" ]; then | |
232 | matches[${pos_start}]=$(( matches[${pos_start}] + 1)) | |
233 | else | |
234 | break | |
235 | fi | |
236 | done | |
237 | done | |
238 | ||
239 | local pos_best | |
240 | local pos_best_val=0 | |
241 | for i in $(seq 0 ${#matches[@]}); do | |
242 | [ -z "${matches[${i}]}" ] && continue | |
243 | ||
244 | if [ ${matches[${i}]} -gt ${pos_best_val} ]; then | |
245 | pos_best=${i} | |
246 | pos_best_val=${matches[${i}]} | |
247 | fi | |
248 | done | |
249 | ||
250 | if [ -n "${pos_best}" ]; then | |
251 | address_new="${address:0:${pos_best}}::" | |
252 | ||
253 | local pos_end=$(( ${pos_best_val} * 2 + ${pos_best} + 1)) | |
254 | ||
255 | if [ "${pos_best}" = "0" ]; then | |
256 | pos_end=$(( ${pos_end} - 1 )) | |
257 | fi | |
258 | ||
259 | address="${address_new}${address:${pos_end}:${#address}}" | |
260 | fi | |
261 | ||
38f61548 MT |
262 | # If a prefix was provided we append it in the end |
263 | [ -n "${prefix}" ] && address="${address}/${prefix}" | |
264 | ||
4231f419 MT |
265 | assert ipv6_is_valid ${address} |
266 | ||
267 | echo "${address}" | |
268 | } | |
269 | ||
270 | function ipv6_explode() { | |
271 | local address=${1} | |
272 | ||
58fb41ee MT |
273 | assert isset address |
274 | ||
38f61548 MT |
275 | local prefix=$(ip_get_prefix ${address}) |
276 | address=$(ip_split_prefix ${address}) | |
277 | ||
4231f419 | 278 | if [ ${#address} -eq 39 ]; then |
38f61548 | 279 | echo "${address}$([ -n "${prefix}" ] && echo "/${prefix}")" |
4231f419 MT |
280 | return ${EXIT_OK} |
281 | fi | |
282 | ||
283 | address=${address//::/:X:} | |
284 | ||
285 | local block | |
286 | local block_count=0 | |
287 | local block_id | |
288 | local block_max=8 | |
289 | local blocks=() | |
290 | ||
291 | for block in ${address//:/\ }; do | |
292 | blocks[${block_count}]=${block} | |
293 | ||
294 | block_count=$(( ${block_count} + 1 )) | |
295 | done | |
296 | ||
297 | if [ ${#blocks[@]} -lt ${block_max} ]; then | |
298 | for block_id in $(seq ${#blocks[@]} -1 0); do | |
299 | block=${blocks[${block_id}]} | |
300 | ||
301 | [ -z "${block}" ] && continue | |
302 | ||
303 | if [ "${block}" = "X" ]; then | |
304 | blocks[${block_id}]="0000" | |
305 | break | |
306 | fi | |
307 | ||
308 | blocks[$(( ${block_max} - ${block_count} + ${block_id} ))]=${block} | |
309 | blocks[${block_id}]="0000" | |
310 | done | |
311 | fi | |
312 | ||
313 | for block_id in $(seq 0 ${#blocks[@]}); do | |
314 | block=${blocks[${block_id}]} | |
315 | ||
316 | [ -z "${block}" ] && block="0000" | |
317 | ||
318 | while [ "${#block}" -lt 4 ]; do | |
319 | block="0${block}" | |
320 | done | |
321 | ||
322 | blocks[${block_id}]=${block} | |
323 | done | |
324 | ||
325 | address= | |
326 | for block in ${blocks[@]}; do | |
327 | address="${address}:${block}" | |
328 | done | |
329 | address=${address:1:39} | |
330 | ||
38f61548 MT |
331 | # If a prefix was provided we append it in the end again |
332 | [ -n "${prefix}" ] && address="${address}/${prefix}" | |
333 | ||
4231f419 MT |
334 | assert ipv6_is_valid ${address} |
335 | ||
336 | echo "${address}" | |
337 | } | |
338 | ||
339 | function ipv6_hash() { | |
340 | local address=${1} | |
341 | ||
58fb41ee MT |
342 | assert isset address |
343 | ||
4231f419 MT |
344 | # Explode address |
345 | address=$(ipv6_explode ${address}) | |
346 | ||
347 | echo "${address//:/}" | |
348 | } |