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