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1 | #!/bin/bash | |
2 | ############################################################################### | |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5 | # Copyright (C) 2017 IPFire Network Development Team # | |
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 | ||
22 | WIRELESS_NETWORK_CONFIG_SETTINGS="ENCRYPTION_MODE PRIORITY PSK SSID" | |
23 | ||
24 | WIRELESS_NETWORKS_VALID_ENCRYPTION_MODES="WPA2-PSK" | |
25 | ||
26 | cli_wireless_network() { | |
27 | case "${1}" in | |
28 | new) | |
29 | wireless_network_new "${@:2}" | |
30 | ;; | |
31 | destroy) | |
32 | wireless_network_destroy "${@:2}" | |
33 | ;; | |
34 | *) | |
35 | local ssid="${1}" | |
36 | local key="${2//-/_}" | |
37 | shift | |
38 | ||
39 | if ! wireless_network_exists "${ssid}"; then | |
40 | error "No such wireless network: ${ssid}" | |
41 | return ${EXIT_ERROR} | |
42 | fi | |
43 | ||
44 | case "${key}" in | |
45 | encryption_mode|pre_shared_key|priority) | |
46 | wireless_network_${key} "${ssid}" "$@" | |
47 | ;; | |
48 | show) | |
49 | wireless_network_show "${ssid}" | |
50 | exit $? | |
51 | ;; | |
52 | *) | |
53 | error "Unrecognized argument: ${key}" | |
54 | exit ${EXIT_ERROR} | |
55 | ;; | |
56 | esac | |
57 | ;; | |
58 | esac | |
59 | } | |
60 | ||
61 | # This function writes all values to a via ${ssid} specificated wireless network configuration file | |
62 | wireless_network_write_config() { | |
63 | assert [ $# -ge 1 ] | |
64 | ||
65 | local ssid="${1}" | |
66 | ||
67 | local ssid_hash="$(wireless_network_hash "${ssid}")" | |
68 | assert isset ssid_hash | |
69 | ||
70 | if ! wireless_network_exists "${ssid}"; then | |
71 | log ERROR "No such wireless network: '${ssid}'" | |
72 | return ${EXIT_ERROR} | |
73 | fi | |
74 | ||
75 | local path="${NETWORK_WIRELESS_NETWORKS_DIR}/${ssid_hash}/settings" | |
76 | ||
77 | if ! settings_write "${path}" ${WIRELESS_NETWORK_CONFIG_SETTINGS}; then | |
78 | log ERROR "Could not write configuration settings for wireless network ${ssid}" | |
79 | return ${EXIT_ERROR} | |
80 | fi | |
81 | ||
82 | # When we get here the writing of the config file was successful | |
83 | return ${EXIT_OK} | |
84 | } | |
85 | ||
86 | # This funtion writes the value for one key to a via ${ssid} specificated | |
87 | # wireless network configuration file | |
88 | wireless_network_write_config_key() { | |
89 | assert [ $# -ge 3 ] | |
90 | ||
91 | local ssid="${1}" | |
92 | local key="${2}" | |
93 | shift 2 | |
94 | ||
95 | local value="$@" | |
96 | ||
97 | if ! wireless_network_exists "${ssid}"; then | |
98 | log ERROR "No such wireless network: ${ssid}" | |
99 | return ${EXIT_ERROR} | |
100 | fi | |
101 | ||
102 | log DEBUG "Set '${key}' to new value '${value}' in wireless network '${ssid}'" | |
103 | ||
104 | local ${WIRELESS_NETWORK_CONFIG_SETTINGS} | |
105 | ||
106 | # Read the config settings | |
107 | if ! wireless_network_read_config "${ssid}"; then | |
108 | return ${EXIT_ERROR} | |
109 | fi | |
110 | ||
111 | # Set the key to a new value | |
112 | assign "${key}" "${value}" | |
113 | ||
114 | if ! wireless_network_write_config "${ssid}"; then | |
115 | return ${EXIT_ERROR} | |
116 | fi | |
117 | ||
118 | return ${EXIT_OK} | |
119 | } | |
120 | ||
121 | # Reads one or more keys out of a settings file or all if no key is provided. | |
122 | wireless_network_read_config() { | |
123 | assert [ $# -ge 1 ] | |
124 | ||
125 | local ssid="${1}" | |
126 | shift 1 | |
127 | ||
128 | local ssid_hash="$(wireless_network_hash "${ssid}")" | |
129 | assert isset ssid_hash | |
130 | ||
131 | if ! wireless_network_exists "${ssid}"; then | |
132 | log ERROR "No such wireless network : ${ssid}" | |
133 | return ${EXIT_ERROR} | |
134 | fi | |
135 | ||
136 | local args | |
137 | if [ $# -eq 0 ] && [ -n "${WIRELESS_NETWORK_CONFIG_SETTINGS}" ]; then | |
138 | list_append args ${WIRELESS_NETWORK_CONFIG_SETTINGS} | |
139 | else | |
140 | list_append args "$@" | |
141 | fi | |
142 | ||
143 | local path="${NETWORK_WIRELESS_NETWORKS_DIR}/${ssid_hash}/settings" | |
144 | ||
145 | if ! settings_read "${path}" ${args}; then | |
146 | log ERROR "Could not read settings for wireless network ${ssid}" | |
147 | return ${EXIT_ERROR} | |
148 | fi | |
149 | } | |
150 | ||
151 | # This function checks if a wireless network exists | |
152 | # Returns True when yes and false when not | |
153 | wireless_network_exists() { | |
154 | assert [ $# -eq 1 ] | |
155 | ||
156 | local ssid="${1}" | |
157 | local ssid_hash="$(wireless_network_hash "${ssid}")" | |
158 | assert isset ssid_hash | |
159 | ||
160 | local path="${NETWORK_WIRELESS_NETWORKS_DIR}/${ssid_hash}" | |
161 | ||
162 | # We cannot use wireless_network_read_config here beacuse we would end in a loop | |
163 | local SSID | |
164 | ||
165 | local path_settings="${NETWORK_WIRELESS_NETWORKS_DIR}/${ssid_hash}/settings" | |
166 | ||
167 | if ! settings_read "${path_settings}" SSID; then | |
168 | return ${EXIT_FALSE} | |
169 | fi | |
170 | ||
171 | assert isset SSID | |
172 | ||
173 | if [ -d "${path}" ] && [[ "${ssid}" = "${SSID}" ]]; then | |
174 | return ${EXIT_TRUE} | |
175 | else | |
176 | return ${EXIT_FALSE} | |
177 | fi | |
178 | } | |
179 | ||
180 | wireless_network_hash() { | |
181 | assert [ $# -eq 1 ] | |
182 | ||
183 | local string="${1}" | |
184 | ||
185 | local hash=$(echo -n "${string}" | md5sum ) | |
186 | hash=${hash%% -} | |
187 | ||
188 | local path="${NETWORK_WIRELESS_NETWORKS_DIR}/*${hash}" | |
189 | ||
190 | if [ -d "${path}" ]; then | |
191 | basename "${path}" | |
192 | else | |
193 | local normalized=$(normalize "${string}") | |
194 | normalized=${normalized%-} | |
195 | echo "${normalized}-${hash}" | |
196 | fi | |
197 | } | |
198 | ||
199 | wireless_network_new() { | |
200 | if [ $# -gt 1 ]; then | |
201 | error "Too many arguments" | |
202 | return ${EXIT_ERROR} | |
203 | fi | |
204 | ||
205 | local ssid="${1}" | |
206 | if ! isset ssid; then | |
207 | error "Please provide a SSID" | |
208 | return ${EXIT_ERROR} | |
209 | fi | |
210 | ||
211 | local ssid_hash="$(wireless_network_hash "${ssid}")" | |
212 | assert isset ssid_hash | |
213 | ||
214 | # Check for duplicates | |
215 | if wireless_network_exists "${ssid}"; then | |
216 | error "The wireless network ${ssid} already exists" | |
217 | return ${EXIT_ERROR} | |
218 | fi | |
219 | ||
220 | log DEBUG "Creating wireless network '${ssid}'" | |
221 | ||
222 | if ! mkdir -p "${NETWORK_WIRELESS_NETWORKS_DIR}/${ssid_hash}"; then | |
223 | log ERROR "Could not create config directory for wireless network ${ssid}" | |
224 | return ${EXIT_ERROR} | |
225 | fi | |
226 | ||
227 | # When the ssid is not set in the settings file we cannot write it because wireless_network_exists fails | |
228 | echo "SSID=\"${ssid}\"" >>"${NETWORK_WIRELESS_NETWORKS_DIR}/${ssid_hash}/settings" | |
229 | ||
230 | local ${WIRELESS_NETWORK_CONFIG_SETTINGS} | |
231 | SSID="${ssid}" | |
232 | PRIORITY=500 | |
233 | ||
234 | if ! wireless_network_write_config "${ssid}"; then | |
235 | log ERROR "Could not write new config file" | |
236 | return ${EXIT_ERROR} | |
237 | fi | |
238 | } | |
239 | ||
240 | # Function that deletes based on the passed parameters | |
241 | # one ore more wireless networks | |
242 | wireless_network_destroy() { | |
243 | local ssid | |
244 | for ssid in "$@"; do | |
245 | local ssid_hash="$(wireless_network_hash "${ssid}")" | |
246 | assert isset ssid_hash | |
247 | ||
248 | if ! wireless_network_exists "${ssid}"; then | |
249 | log ERROR "The wireless network ${ssid} does not exist." | |
250 | continue | |
251 | fi | |
252 | ||
253 | log DEBUG "Deleting wireless network ${ssid}" | |
254 | ||
255 | if ! rm -rf "${NETWORK_WIRELESS_NETWORKS_DIR}/${ssid_hash}"; then | |
256 | log ERROR "Deleting the wireless network ${ssid} was not sucessful" | |
257 | return ${EXIT_ERROR} | |
258 | fi | |
259 | done | |
260 | } | |
261 | ||
262 | wireless_network_encryption_mode() { | |
263 | if [ ! $# -eq 2 ]; then | |
264 | log ERROR "Not enough arguments" | |
265 | return ${EXIT_ERROR} | |
266 | fi | |
267 | local ssid="${1}" | |
268 | local mode="${2}" | |
269 | ||
270 | if ! isoneof mode ${WIRELESS_NETWORKS_VALID_ENCRYPTION_MODES}; then | |
271 | log ERROR "Encryption mode '${mode}' is invalid" | |
272 | return ${EXIT_ERROR} | |
273 | fi | |
274 | ||
275 | if ! wireless_network_write_config_key "${ssid}" "ENCRYPTION_MODE" ${mode^^}; then | |
276 | log ERROR "Could not write configuration settings" | |
277 | return ${EXIT_ERROR} | |
278 | fi | |
279 | } | |
280 | ||
281 | wireless_network_pre_shared_key() { | |
282 | if [ ! $# -eq 2 ]; then | |
283 | log ERROR "Not enough arguments" | |
284 | return ${EXIT_ERROR} | |
285 | fi | |
286 | local ssid="${1}" | |
287 | local psk="${2}" | |
288 | ||
289 | if ! wireless_network_write_config_key "${ssid}" "PSK" "${psk}"; then | |
290 | log ERROR "Could not write configuration settings" | |
291 | return ${EXIT_ERROR} | |
292 | fi | |
293 | } | |
294 | ||
295 | wireless_network_priority() { | |
296 | if [ ! $# -eq 2 ]; then | |
297 | log ERROR "Not enough arguments" | |
298 | return ${EXIT_ERROR} | |
299 | fi | |
300 | local ssid="${1}" | |
301 | local priority=${2} | |
302 | ||
303 | if ! isinteger priority && [ ! ${priority} -ge 0 ]; then | |
304 | log ERROR "The priority must be an integer greater or eqal zero" | |
305 | return ${EXIT_ERROR} | |
306 | fi | |
307 | ||
308 | if ! wireless_network_write_config_key "${ssid}" "PRIORITY" "${priority}"; then | |
309 | log ERROR "Could not write configuration settings" | |
310 | return ${EXIT_ERROR} | |
311 | fi | |
312 | } |