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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 | |
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22 | # Sets the global wireless country code. Default is 00 = world. |
23 | WIRELESS_REGULATORY_DOMAIN="00" | |
e9df08ad | 24 | NETWORK_SETTINGS_FILE_PARAMS="${NETWORK_SETTINGS_FILE_PARAMS} WIRELESS_REGULATORY_DOMAIN" |
31670741 | 25 | |
d76f5107 MT |
26 | function wireless_create() { |
27 | local device=${1} | |
d76f5107 | 28 | assert isset device |
22a61046 | 29 | shift |
d76f5107 | 30 | |
22a61046 MT |
31 | local address |
32 | local phy | |
33 | local type="managed" | |
34 | ||
35 | while [ $# -gt 0 ]; do | |
36 | case "${1}" in | |
37 | --address=*) | |
38 | address=$(cli_get_val ${1}) | |
39 | ;; | |
40 | --phy=*) | |
41 | phy=$(cli_get_val ${1}) | |
42 | phy=$(phy_get ${phy}) | |
43 | ;; | |
44 | --type=*) | |
45 | type=$(cli_get_val ${1}) | |
46 | ||
47 | # ap --> __ap | |
48 | [ "${type}" = "ap" ] && type="__ap" | |
49 | ;; | |
50 | *) | |
51 | error "Unrecognized argument: ${1}" | |
52 | return ${EXIT_ERROR} | |
53 | ;; | |
54 | esac | |
55 | shift | |
56 | done | |
d76f5107 | 57 | |
5a38ea84 | 58 | assert isoneof type ibss managed monitor __ap |
22a61046 MT |
59 | assert phy_exists ${phy} |
60 | isset address || address=$(mac_generate) | |
61 | ||
62 | cmd_quiet iw phy ${phy} interface add ${device} type ${type} | |
63 | local ret=$? | |
d76f5107 | 64 | |
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65 | if [ ${ret} -eq ${EXIT_OK} ]; then |
66 | log DEBUG "created wireless device '${device}' (${type})" | |
d76f5107 | 67 | |
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68 | if isset address; then |
69 | device_set_address ${device} ${address} | |
70 | fi | |
71 | else | |
72 | log ERROR "could not create wireless device '${device}' (${type}): ${ret}" | |
d76f5107 MT |
73 | fi |
74 | ||
22a61046 | 75 | return ${ret} |
d76f5107 MT |
76 | } |
77 | ||
78 | function wireless_remove() { | |
79 | local device=${1} | |
22a61046 | 80 | assert isset device |
d76f5107 | 81 | |
22a61046 MT |
82 | if ! device_exists ${device}; then |
83 | return ${EXIT_OK} | |
84 | fi | |
d76f5107 | 85 | |
22a61046 | 86 | # Tear down the device (if necessary). |
d76f5107 MT |
87 | device_set_down ${device} |
88 | ||
22a61046 MT |
89 | # Remove it. |
90 | cmd_quiet iw dev ${device} del | |
91 | local ret=$? | |
92 | ||
93 | if [ ${ret} -eq ${EXIT_OK} ]; then | |
94 | log DEBUG "removed wireless device '${device}'" | |
95 | else | |
96 | log ERROR "could not remove wireless device '${device}': ${ret}" | |
97 | fi | |
98 | ||
99 | return ${ret} | |
d76f5107 MT |
100 | } |
101 | ||
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102 | function wireless_get_reg_domain() { |
103 | # Returns the country code for the wireless device. | |
104 | # Defaults to 00 = world if unset. | |
105 | print "${WIRELESS_REGULATORY_DOMAIN:-00}" | |
106 | } | |
107 | ||
108 | function wireless_init_reg_domain() { | |
109 | local country_code="$(wireless_get_reg_domain)" | |
110 | ||
06a6f01e | 111 | wireless_set_reg_domain "${country_code}" --no-reset |
31670741 MT |
112 | } |
113 | ||
114 | function wireless_set_reg_domain() { | |
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115 | local country_code |
116 | local reset="true" | |
117 | ||
118 | while [ $# -gt 0 ]; do | |
119 | case "${1}" in | |
120 | --no-reset) | |
121 | reset="false" | |
122 | ;; | |
123 | -*) | |
124 | log ERROR "Ignoring invalid option: ${1}" | |
125 | ;; | |
126 | *) | |
127 | country_code="${1}" | |
128 | ;; | |
129 | esac | |
130 | shift | |
131 | done | |
132 | ||
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133 | assert isset country_code |
134 | ||
135 | # Before the wireless reg domain is set, it helps to reset to 00 first. | |
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136 | if enabled reset; then |
137 | iw reg set 00 &>/dev/null | |
138 | fi | |
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139 | |
140 | log INFO "Setting wireless regulatory domain country to '${country_code}'" | |
141 | iw reg set "${country_code}" | |
142 | } | |
143 | ||
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144 | function wireless_channel_to_frequency() { |
145 | # http://en.wikipedia.org/wiki/List_of_WLAN_channels | |
146 | ||
147 | local channel=${1} | |
148 | assert isset channel | |
149 | ||
150 | # Channel number must be positive. | |
151 | assert [ "${channel}" -gt 0 ] | |
152 | ||
153 | # 2.4 GHz band | |
154 | case "${channel}" in | |
155 | [123456789]|1[0123]) | |
156 | print "$(( 2407 + (${channel} * 5)))" | |
157 | return ${EXIT_OK} | |
158 | ;; | |
159 | 14) | |
160 | print "2484" | |
161 | return ${EXIT_OK} | |
162 | ;; | |
163 | esac | |
164 | ||
165 | # 5 GHz band | |
166 | case "${channel}" in | |
167 | 3[68]|4[02468]|5[26]|6[04]|10[048]|11[26]|12[048]|13[26]|14[09]|15[37]|16[15]) | |
168 | print "$(( 5000 + (${channel} * 5)))" | |
169 | return ${EXIT_OK} | |
170 | ;; | |
171 | esac | |
172 | ||
173 | return ${EXIT_ERROR} | |
174 | } | |
175 | ||
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176 | function wireless_set_channel() { |
177 | local device=${1} | |
d76f5107 | 178 | assert isset device |
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179 | |
180 | local channel=${2} | |
d76f5107 MT |
181 | assert isset channel |
182 | ||
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183 | device_exists ${device} || return ${EXIT_ERROR} |
184 | ||
5a38ea84 | 185 | log DEBUG "Setting wireless channel on device '${device}' to channel '${channel}'" |
22a61046 | 186 | cmd_quiet iw dev ${device} set channel ${channel} |
d76f5107 | 187 | } |
91987cc5 MT |
188 | |
189 | function wireless_ibss_join() { | |
190 | local device=${1} | |
191 | assert isset device | |
192 | shift | |
193 | ||
194 | local bssid | |
195 | local essid | |
196 | local frequency | |
197 | ||
198 | while [ $# -gt 0 ]; do | |
199 | case "${1}" in | |
200 | --bssid=*) | |
201 | bssid="$(cli_get_val ${1})" | |
202 | ;; | |
203 | --essid=*) | |
204 | essid="$(cli_get_val ${1})" | |
205 | ;; | |
206 | --channel=*) | |
207 | local channel="$(cli_get_val ${1})" | |
208 | ||
209 | # Save the frequency of the channel instead | |
210 | # of the channel itself. | |
211 | if isset channel; then | |
212 | frequency="$(wireless_channel_to_frequency ${channel})" | |
213 | fi | |
214 | ;; | |
215 | esac | |
216 | shift | |
217 | done | |
218 | ||
219 | # Check input. | |
220 | assert ismac bssid | |
221 | assert isset essid | |
222 | assert isinteger frequency | |
223 | ||
224 | # Set device up. | |
225 | device_set_up "${device}" | |
226 | ||
227 | log INFO "${device} joining ibss network: ${essid} (${bssid})" | |
228 | cmd_quiet iw dev "${device}" ibss join "${essid}" \ | |
229 | "${frequency}" fixed-freq "${bssid}" | |
230 | } | |
231 | ||
232 | function wireless_ibss_leave() { | |
233 | local device=${1} | |
234 | assert isset device | |
235 | ||
236 | log INFO "${device} leaving ibss network" | |
237 | cmd_quiet iw dev "${device}" ibss leave | |
238 | } | |
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239 | |
240 | function wireless_is_radar_frequency() { | |
241 | local frequency="${1}" | |
242 | assert isset frequency | |
243 | ||
244 | [[ ${frequency} -ge 5260 ]] && [[ ${frequency} -le 5700 ]] | |
245 | } | |
5a38ea84 MT |
246 | |
247 | function wireless_monitor() { | |
248 | local device="${1}" | |
249 | assert isset device | |
250 | shift | |
251 | ||
a23fdc0e | 252 | local monitor_device="$(port_find_free "${PORT_PATTERN_WIRELESS_MONITOR}")" |
5a38ea84 MT |
253 | |
254 | # Create an 802.11 monitoring device | |
255 | wireless_create "${monitor_device}" --phy="${device}" --type="monitor" | |
256 | local ret=$? | |
257 | ||
258 | case "${ret}" in | |
259 | 0) | |
260 | # Bring up the device | |
261 | device_set_up "${monitor_device}" | |
262 | ||
263 | # Starting tcpdump | |
264 | tcpdump -i "${monitor_device}" "$@" | |
265 | ||
266 | # Remove the monitoring interface. | |
267 | wireless_remove "${monitor_device}" | |
268 | ;; | |
269 | ||
270 | *) | |
271 | log ERROR "Could not create a monitoring interface on ${device}" | |
272 | return ${EXIT_ERROR} | |
273 | ;; | |
274 | esac | |
275 | ||
276 | return ${EXIT_OK} | |
277 | } |