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d76f5107 | 1 | #!/bin/bash |
1578dae9 MT |
2 | ############################################################################### |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
0e035311 | 5 | # Copyright (C) 2012 IPFire Network Development Team # |
1578dae9 MT |
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 | ############################################################################### | |
d76f5107 | 21 | |
31670741 MT |
22 | # Sets the global wireless country code. Default is 00 = world. |
23 | WIRELESS_REGULATORY_DOMAIN="00" | |
e9df08ad | 24 | NETWORK_SETTINGS_FILE_PARAMS="${NETWORK_SETTINGS_FILE_PARAMS} WIRELESS_REGULATORY_DOMAIN" |
31670741 | 25 | |
ab9e0fd0 MT |
26 | WIRELESS_REGULATORY_DOMAIN_DATABASE="/usr/lib/crda/regulatory.bin" |
27 | ||
49958b8c MT |
28 | cli_wireless() { |
29 | local action=${1} | |
30 | shift 1 | |
47feaba1 | 31 | |
49958b8c MT |
32 | case "${action}" in |
33 | network) | |
34 | cli_wireless_network "$@" | |
35 | ;; | |
36 | *) | |
37 | error "Unrecognized argument: ${action}" | |
38 | exit ${EXIT_ERROR} | |
39 | ;; | |
40 | esac | |
41 | } | |
47feaba1 | 42 | |
1c6a4e30 | 43 | wireless_create() { |
d76f5107 | 44 | local device=${1} |
d76f5107 | 45 | assert isset device |
22a61046 | 46 | shift |
d76f5107 | 47 | |
22a61046 | 48 | local address |
9170fc35 | 49 | local channel |
22a61046 MT |
50 | local phy |
51 | local type="managed" | |
52 | ||
53 | while [ $# -gt 0 ]; do | |
54 | case "${1}" in | |
55 | --address=*) | |
2212045f | 56 | address=$(cli_get_val "${1}") |
22a61046 | 57 | ;; |
9170fc35 MT |
58 | --channel=*) |
59 | channel=$(cli_get_val "${1}") | |
60 | ;; | |
22a61046 | 61 | --phy=*) |
2212045f | 62 | phy=$(cli_get_val "${1}") |
22a61046 MT |
63 | phy=$(phy_get ${phy}) |
64 | ;; | |
65 | --type=*) | |
2212045f | 66 | type=$(cli_get_val "${1}") |
22a61046 MT |
67 | |
68 | # ap --> __ap | |
69 | [ "${type}" = "ap" ] && type="__ap" | |
70 | ;; | |
71 | *) | |
72 | error "Unrecognized argument: ${1}" | |
73 | return ${EXIT_ERROR} | |
74 | ;; | |
75 | esac | |
76 | shift | |
77 | done | |
d76f5107 | 78 | |
be5ddfb5 MT |
79 | case "${type}" in |
80 | ibss|managed|monitor|__ap) | |
81 | ;; | |
82 | mesh-point) | |
83 | type="mp" | |
84 | ;; | |
85 | *) | |
86 | log ERROR "Unknown type: ${type}" | |
87 | return ${EXIT_ERROR} | |
88 | ;; | |
89 | ||
90 | esac | |
91 | ||
22a61046 MT |
92 | assert phy_exists ${phy} |
93 | isset address || address=$(mac_generate) | |
94 | ||
95 | cmd_quiet iw phy ${phy} interface add ${device} type ${type} | |
96 | local ret=$? | |
d76f5107 | 97 | |
22a61046 MT |
98 | if [ ${ret} -eq ${EXIT_OK} ]; then |
99 | log DEBUG "created wireless device '${device}' (${type})" | |
d76f5107 | 100 | |
22a61046 MT |
101 | if isset address; then |
102 | device_set_address ${device} ${address} | |
103 | fi | |
104 | else | |
105 | log ERROR "could not create wireless device '${device}' (${type}): ${ret}" | |
d76f5107 MT |
106 | fi |
107 | ||
9170fc35 MT |
108 | # Set the channel |
109 | if isset channel; then | |
110 | wireless_set_channel "${device}" "${channel}" || return $? | |
111 | fi | |
112 | ||
22a61046 | 113 | return ${ret} |
d76f5107 MT |
114 | } |
115 | ||
1c6a4e30 | 116 | wireless_remove() { |
d76f5107 | 117 | local device=${1} |
22a61046 | 118 | assert isset device |
d76f5107 | 119 | |
22a61046 MT |
120 | if ! device_exists ${device}; then |
121 | return ${EXIT_OK} | |
122 | fi | |
d76f5107 | 123 | |
22a61046 | 124 | # Tear down the device (if necessary). |
d76f5107 MT |
125 | device_set_down ${device} |
126 | ||
22a61046 MT |
127 | # Remove it. |
128 | cmd_quiet iw dev ${device} del | |
129 | local ret=$? | |
130 | ||
131 | if [ ${ret} -eq ${EXIT_OK} ]; then | |
132 | log DEBUG "removed wireless device '${device}'" | |
133 | else | |
134 | log ERROR "could not remove wireless device '${device}': ${ret}" | |
135 | fi | |
136 | ||
137 | return ${ret} | |
d76f5107 MT |
138 | } |
139 | ||
1c6a4e30 | 140 | wireless_get_reg_domain() { |
31670741 MT |
141 | # Returns the country code for the wireless device. |
142 | # Defaults to 00 = world if unset. | |
143 | print "${WIRELESS_REGULATORY_DOMAIN:-00}" | |
144 | } | |
145 | ||
1c6a4e30 | 146 | wireless_init_reg_domain() { |
31670741 MT |
147 | local country_code="$(wireless_get_reg_domain)" |
148 | ||
06a6f01e | 149 | wireless_set_reg_domain "${country_code}" --no-reset |
31670741 MT |
150 | } |
151 | ||
1c6a4e30 | 152 | wireless_set_reg_domain() { |
06a6f01e MT |
153 | local country_code |
154 | local reset="true" | |
155 | ||
156 | while [ $# -gt 0 ]; do | |
157 | case "${1}" in | |
158 | --no-reset) | |
159 | reset="false" | |
160 | ;; | |
161 | -*) | |
162 | log ERROR "Ignoring invalid option: ${1}" | |
163 | ;; | |
164 | *) | |
165 | country_code="${1}" | |
166 | ;; | |
167 | esac | |
168 | shift | |
169 | done | |
170 | ||
ab9e0fd0 MT |
171 | # Check if configuration value is valid |
172 | if ! wireless_valid_reg_domain "${country_code}"; then | |
173 | log ERROR "Invalid wireless regulatory domain: ${country_code}" | |
174 | return ${EXIT_ERROR} | |
175 | fi | |
31670741 MT |
176 | |
177 | # Before the wireless reg domain is set, it helps to reset to 00 first. | |
06a6f01e MT |
178 | if enabled reset; then |
179 | iw reg set 00 &>/dev/null | |
180 | fi | |
31670741 MT |
181 | |
182 | log INFO "Setting wireless regulatory domain country to '${country_code}'" | |
183 | iw reg set "${country_code}" | |
184 | } | |
185 | ||
ab9e0fd0 MT |
186 | wireless_valid_reg_domain() { |
187 | local country_code="${1}" | |
188 | ||
189 | # Empty country codes are invalid | |
190 | isset country_code || return ${EXIT_FALSE} | |
191 | ||
192 | local valid_country_codes="$(wireless_list_reg_domains)" | |
193 | ||
194 | if list_match "${country_code}" ${valid_country_codes}; then | |
195 | return ${EXIT_TRUE} | |
196 | fi | |
197 | ||
198 | return ${EXIT_FALSE} | |
199 | } | |
200 | ||
201 | wireless_list_reg_domains() { | |
202 | if [ ! -r "${WIRELESS_REGULATORY_DOMAIN_DATABASE}" ]; then | |
203 | log ERROR "Could not read ${WIRELESS_REGULATORY_DOMAIN_DATABASE}" | |
204 | return ${EXIT_ERROR} | |
205 | fi | |
206 | ||
207 | local line | |
208 | while read line; do | |
209 | # Check if line starts with "country" | |
210 | [ "${line:0:7}" = "country" ] || continue | |
211 | ||
212 | # Print country code | |
213 | print "${line:8:2}" | |
214 | done <<< "$(regdbdump ${WIRELESS_REGULATORY_DOMAIN_DATABASE})" | |
215 | } | |
216 | ||
f8b7f135 | 217 | # http://en.wikipedia.org/wiki/List_of_WLAN_channels |
1c6a4e30 | 218 | wireless_channel_to_frequency() { |
91987cc5 | 219 | local channel=${1} |
91987cc5 | 220 | |
f8b7f135 MT |
221 | # Works only for valid channel numbers |
222 | if ! wireless_channel_is_valid "${channel}"; then | |
223 | log ERROR "Invalid wireless channel: ${channel}" | |
224 | return ${EXIT_ERROR} | |
225 | fi | |
91987cc5 MT |
226 | |
227 | # 2.4 GHz band | |
228 | case "${channel}" in | |
229 | [123456789]|1[0123]) | |
230 | print "$(( 2407 + (${channel} * 5)))" | |
231 | return ${EXIT_OK} | |
232 | ;; | |
233 | 14) | |
234 | print "2484" | |
235 | return ${EXIT_OK} | |
236 | ;; | |
237 | esac | |
238 | ||
239 | # 5 GHz band | |
240 | case "${channel}" in | |
241 | 3[68]|4[02468]|5[26]|6[04]|10[048]|11[26]|12[048]|13[26]|14[09]|15[37]|16[15]) | |
242 | print "$(( 5000 + (${channel} * 5)))" | |
243 | return ${EXIT_OK} | |
244 | ;; | |
245 | esac | |
246 | ||
247 | return ${EXIT_ERROR} | |
248 | } | |
249 | ||
97877f23 MT |
250 | wireless_frequency_to_channel() { |
251 | local frequency=${1} | |
252 | ||
253 | assert isinteger frequency | |
254 | ||
255 | # Everything that is too high | |
256 | if [ ${frequency} -gt 5825 ]; then | |
257 | return ${EXIT_ERROR} | |
258 | ||
259 | # 5 GHz Band | |
260 | elif [ ${frequency} -gt 5000 ]; then | |
261 | (( frequency = frequency - 5000 )) | |
262 | ||
263 | # Must be divisible by 5 | |
264 | [ "$(( frequency % 5 ))" -ne 0 ] && return ${EXIT_ERROR} | |
265 | ||
266 | print "$(( frequency / 5 ))" | |
267 | ||
268 | # 2.4 GHz Band - Channel 14 | |
269 | elif [ ${frequency} -eq 2484 ]; then | |
270 | print "14" | |
271 | ||
272 | # 2.4 GHz Band | |
273 | elif [ ${frequency} -gt 2407 ]; then | |
274 | (( frequency = frequency - 2407 )) | |
275 | ||
276 | # Must be divisible by 5 | |
277 | [ "$(( frequency % 5 ))" -ne 0 ] && return ${EXIT_ERROR} | |
278 | ||
279 | print "$(( frequency / 5 ))" | |
280 | ||
281 | # Everything else | |
282 | else | |
283 | return ${EXIT_ERROR} | |
284 | fi | |
285 | ||
286 | return ${EXIT_OK} | |
287 | } | |
288 | ||
f8b7f135 MT |
289 | wireless_channel_is_valid() { |
290 | local channel=${1} | |
291 | ||
292 | case "${channel}" in | |
293 | # 2.4 GHz Band | |
294 | [123456789]|1[0123]|14) | |
295 | return ${EXIT_TRUE} | |
296 | ;; | |
297 | ||
298 | # 5 GHz Band | |
299 | 3[68]|4[02468]|5[26]|6[04]|10[048]|11[26]|12[048]|13[26]|14[09]|15[37]|16[15]) | |
300 | return ${EXIT_TRUE} | |
301 | ;; | |
302 | esac | |
303 | ||
304 | # Invalid channel number given | |
305 | return ${EXIT_FALSE} | |
306 | } | |
307 | ||
1c6a4e30 | 308 | wireless_set_channel() { |
d76f5107 | 309 | local device=${1} |
22a61046 | 310 | local channel=${2} |
d76f5107 | 311 | |
f8b7f135 MT |
312 | # Check if the device exists |
313 | if ! device_exists "${device}"; then | |
314 | log ERROR "No such device: ${device}" | |
315 | return ${EXIT_ERROR} | |
316 | fi | |
317 | ||
318 | # Check if the channel number is valid | |
319 | if ! wireless_channel_is_valid "${channel}"; then | |
320 | log ERROR "Invalid wireless channel: ${channel}" | |
321 | return ${EXIT_ERROR} | |
322 | fi | |
22a61046 | 323 | |
5a38ea84 | 324 | log DEBUG "Setting wireless channel on device '${device}' to channel '${channel}'" |
f8b7f135 | 325 | cmd iw dev "${device}" set channel "${channel}" |
d76f5107 | 326 | } |
91987cc5 | 327 | |
1c6a4e30 | 328 | wireless_ibss_join() { |
91987cc5 MT |
329 | local device=${1} |
330 | assert isset device | |
331 | shift | |
332 | ||
333 | local bssid | |
334 | local essid | |
335 | local frequency | |
336 | ||
337 | while [ $# -gt 0 ]; do | |
338 | case "${1}" in | |
339 | --bssid=*) | |
2212045f | 340 | bssid="$(cli_get_val "${1}")" |
91987cc5 MT |
341 | ;; |
342 | --essid=*) | |
2212045f | 343 | essid="$(cli_get_val "${1}")" |
91987cc5 MT |
344 | ;; |
345 | --channel=*) | |
2212045f | 346 | local channel="$(cli_get_val "${1}")" |
91987cc5 MT |
347 | |
348 | # Save the frequency of the channel instead | |
349 | # of the channel itself. | |
350 | if isset channel; then | |
351 | frequency="$(wireless_channel_to_frequency ${channel})" | |
352 | fi | |
353 | ;; | |
354 | esac | |
355 | shift | |
356 | done | |
357 | ||
358 | # Check input. | |
359 | assert ismac bssid | |
360 | assert isset essid | |
361 | assert isinteger frequency | |
362 | ||
363 | # Set device up. | |
364 | device_set_up "${device}" | |
365 | ||
366 | log INFO "${device} joining ibss network: ${essid} (${bssid})" | |
367 | cmd_quiet iw dev "${device}" ibss join "${essid}" \ | |
368 | "${frequency}" fixed-freq "${bssid}" | |
369 | } | |
370 | ||
1c6a4e30 | 371 | wireless_ibss_leave() { |
91987cc5 MT |
372 | local device=${1} |
373 | assert isset device | |
374 | ||
375 | log INFO "${device} leaving ibss network" | |
376 | cmd_quiet iw dev "${device}" ibss leave | |
377 | } | |
646ae5b2 | 378 | |
1c6a4e30 | 379 | wireless_is_radar_frequency() { |
646ae5b2 MT |
380 | local frequency="${1}" |
381 | assert isset frequency | |
382 | ||
383 | [[ ${frequency} -ge 5260 ]] && [[ ${frequency} -le 5700 ]] | |
384 | } | |
5a38ea84 | 385 | |
1c6a4e30 | 386 | wireless_monitor() { |
5a38ea84 MT |
387 | local device="${1}" |
388 | assert isset device | |
389 | shift | |
390 | ||
a23fdc0e | 391 | local monitor_device="$(port_find_free "${PORT_PATTERN_WIRELESS_MONITOR}")" |
5a38ea84 MT |
392 | |
393 | # Create an 802.11 monitoring device | |
394 | wireless_create "${monitor_device}" --phy="${device}" --type="monitor" | |
395 | local ret=$? | |
396 | ||
397 | case "${ret}" in | |
398 | 0) | |
399 | # Bring up the device | |
400 | device_set_up "${monitor_device}" | |
401 | ||
402 | # Starting tcpdump | |
403 | tcpdump -i "${monitor_device}" "$@" | |
404 | ||
405 | # Remove the monitoring interface. | |
406 | wireless_remove "${monitor_device}" | |
407 | ;; | |
408 | ||
409 | *) | |
410 | log ERROR "Could not create a monitoring interface on ${device}" | |
411 | return ${EXIT_ERROR} | |
412 | ;; | |
413 | esac | |
414 | ||
415 | return ${EXIT_OK} | |
416 | } |