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1848564d 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 | ||
22 | # Print a pretty error message | |
23 | function error() { | |
2ab7f50f | 24 | echo -e " ${COLOUR_ERROR}ERROR${COLOUR_NORMAL} : $@" >&2 |
1848564d MT |
25 | } |
26 | ||
1b7a1578 MT |
27 | function error_log() { |
28 | error "$@" | |
29 | log ERROR "$@" | |
30 | } | |
31 | ||
1848564d MT |
32 | # Print a pretty warn message |
33 | function warning() { | |
2ab7f50f | 34 | echo -e " ${COLOUR_WARN}WARNING${COLOUR_NORMAL}: $@" >&2 |
1848564d MT |
35 | } |
36 | ||
1b7a1578 MT |
37 | function warning_log() { |
38 | warning "$@" | |
39 | log WARNING "$@" | |
40 | } | |
41 | ||
940e6f36 MT |
42 | # This function does not exist because we cannot use /usr/bin/sort. |
43 | # It implements some kind of bubble sort which is generally very slow | |
44 | # but we only have to sort very small data. | |
1848564d | 45 | function listsort() { |
940e6f36 MT |
46 | local list=($@) |
47 | local list_prev | |
48 | ||
1848564d | 49 | local i |
940e6f36 MT |
50 | local j |
51 | local var | |
52 | while [ "${list[*]}" != "${list_prev}" ]; do | |
53 | list_prev="${list[*]}" | |
54 | for j in $(seq 1 ${#list[*]}); do | |
55 | [ ${j} -ge ${#list[*]} ] && continue | |
56 | i=$(( ${j} - 1 )) | |
57 | if [[ "${list[${j}]}" < "${list[${i}]}" ]]; then | |
58 | var="${list[${i}]}" | |
59 | list[${i}]="${list[${j}]}" | |
60 | list[${j}]="${var}" | |
61 | fi | |
62 | done | |
63 | done | |
64 | ||
65 | echo "${list[*]}" | |
1848564d MT |
66 | } |
67 | ||
711ffac1 MT |
68 | function listmatch() { |
69 | local match=${1} | |
70 | shift | |
71 | ||
72 | assert isset match | |
73 | ||
74 | local i | |
75 | for i in $@; do | |
76 | [ "${match}" = "${i}" ] && return ${EXIT_OK} | |
77 | done | |
78 | ||
79 | return ${EXIT_ERROR} | |
80 | } | |
81 | ||
82 | function listlength() { | |
83 | local length=0 | |
84 | ||
85 | local i | |
86 | for i in $@; do | |
87 | length=$(( ${length} + 1 )) | |
88 | done | |
89 | ||
90 | echo "${length}" | |
91 | } | |
92 | ||
1848564d MT |
93 | function config_read() { |
94 | local config_file=${1} | |
95 | ||
f6ee6bb1 AF |
96 | log DEBUG "Reading configuration: ${config_file}" |
97 | ||
1848564d MT |
98 | if [ -e "${config_file}" ]; then |
99 | . ${config_file} | |
100 | config_check | |
101 | fi | |
102 | } | |
103 | ||
104 | function config_write() { | |
105 | local config_file=${1} | |
106 | shift | |
107 | ||
108 | # Check if all values to be written are sane | |
109 | config_check | |
110 | ||
1b7a1578 MT |
111 | log DEBUG "Writing configuration file ${config_file}." |
112 | ||
1848564d MT |
113 | > ${config_file} |
114 | ||
115 | local param | |
116 | for param in $(listsort $@); do | |
117 | echo "${param}=\"${!param}\"" >> ${config_file} | |
118 | done | |
119 | } | |
120 | ||
121 | function config_print() { | |
122 | local param | |
123 | ||
124 | for param in $(listsort $@); do | |
125 | printf "%-16s = %s\n" "${param}" "${!param}" | |
126 | done | |
127 | } | |
128 | ||
129 | function config_check() { | |
130 | # If there is a function defined that is called __check | |
131 | # we call that function | |
132 | [ -n "$(type -t _check)" ] && _check | |
133 | } | |
134 | ||
31e59f2b MT |
135 | function config_hostname() { |
136 | local hostname=${1} | |
137 | ||
138 | if [ -n "${hostname}" ]; then | |
139 | echo "${hostname}" > ${CONFIG_HOSTNAME} | |
140 | else | |
141 | echo "$(<${CONFIG_HOSTNAME})" | |
142 | fi | |
143 | } | |
144 | ||
1848564d MT |
145 | function network_config_set() { |
146 | while [ $# -gt 0 ]; do | |
147 | case "${1}" in | |
148 | *=*) | |
1b7a1578 MT |
149 | log INFO "Setting configuration option '${1}'". |
150 | eval ${1} | |
1848564d MT |
151 | ;; |
152 | *) | |
153 | warning "Invalid parameter given: ${1}" | |
154 | ;; | |
155 | esac | |
156 | shift | |
157 | done | |
158 | ||
159 | # Write configuration to disk | |
160 | network_config_write | |
161 | } | |
162 | ||
163 | function network_config_read() { | |
164 | config_read ${CONFIG_FILE} | |
165 | } | |
166 | ||
167 | function network_config_write() { | |
168 | config_write ${CONFIG_FILE} ${CONFIG_FILE_PARAMS} | |
169 | } | |
170 | ||
171 | function network_config_print() { | |
172 | config_print ${CONFIG_FILE_PARAMS} | |
173 | } | |
174 | ||
175 | # Speedup function to avoid a call of the basename binary | |
176 | function basename() { | |
177 | echo "${1##*/}" | |
178 | } | |
179 | ||
180 | function enabled() { | |
181 | local param=${1} | |
182 | ||
183 | [ "${!param}" = "yes" ] || [ "${!param}" = "on" ] || [ "${!param}" = "1" ] | |
184 | } | |
185 | ||
186 | function mac_generate() { | |
187 | local mac=() | |
188 | for i in $(seq 0 5); do | |
21dbdbb9 MT |
189 | mac[i]="$(uuid)" |
190 | mac[i]="0x${mac[i]:0:2}" | |
1848564d MT |
191 | done |
192 | ||
193 | # Remove multicast bit | |
194 | # and set address is software assigned | |
195 | # XXX must doublecheck if this works | |
196 | mac[0]=$((mac[0] & 0xfe)) | |
197 | mac[0]=$((mac[0] | 0x02)) | |
198 | ||
199 | local output | |
200 | for i in ${mac[*]}; do | |
21dbdbb9 MT |
201 | if [ -n "${output}" ]; then |
202 | output="${output}:" | |
203 | fi | |
1848564d | 204 | |
21dbdbb9 | 205 | output="${output}$(printf "%02x" ${i})" |
1848564d MT |
206 | done |
207 | ||
208 | # Check if output is valid | |
209 | assert mac_is_valid ${output} | |
210 | ||
211 | echo ${output} | |
212 | } | |
213 | ||
18b43372 MT |
214 | function mac_format() { |
215 | local mac=${1} | |
216 | ||
217 | local output | |
218 | ||
219 | if [ "${#mac}" = "12" ]; then | |
220 | # Add colons (:) to mac address | |
221 | output=${mac:0:2} | |
222 | local i | |
223 | for i in 2 4 6 8 10; do | |
224 | output="${output}:${mac:${i}:2}" | |
225 | done | |
226 | fi | |
227 | ||
228 | assert mac_is_valid ${output} | |
229 | ||
230 | echo "${output}" | |
231 | } | |
232 | ||
1848564d MT |
233 | function mac_is_valid() { |
234 | local mac=${1} | |
235 | ||
236 | [[ ${mac} =~ ^([0-9a-f]{2}\:){5}[0-9a-f]{2}$ ]] | |
237 | } | |
238 | ||
239 | function uuid() { | |
de543653 | 240 | echo $(</proc/sys/kernel/random/uuid) |
1848564d MT |
241 | } |
242 | ||
243 | function isset() { | |
244 | local var=${1} | |
245 | ||
246 | [ -n "${!var}" ] | |
247 | } | |
248 | ||
943e3f7e | 249 | # XXX Nearly same as listmatch |
1848564d MT |
250 | function isoneof() { |
251 | local var=${!1} | |
252 | shift | |
253 | ||
254 | for i in $@; do | |
255 | [ "${var}" = "${i}" ] && return ${EXIT_OK} | |
256 | done | |
257 | ||
258 | return ${EXIT_ERROR} | |
259 | } | |
260 | ||
261 | function isbool() { | |
262 | local var=${1} | |
263 | ||
264 | isoneof ${var} 0 1 no yes on off | |
265 | } | |
266 | ||
267 | function isinteger() { | |
268 | local var=${!1} | |
269 | ||
270 | [[ ${var} =~ ^[0-9]+$ ]] | |
271 | } | |
272 | ||
273 | function ismac() { | |
274 | local mac=${!1} | |
275 | ||
276 | mac_is_valid ${mac} | |
277 | } | |
278 | ||
711ffac1 MT |
279 | function backtrace() { |
280 | local start=1 | |
281 | ||
282 | echo # Empty line | |
283 | error_log "Backtrace (most recent call in first line):" | |
284 | ||
285 | local i | |
286 | for i in $(seq ${start} ${#BASH_SOURCE[*]}); do | |
287 | [ -z "${FUNCNAME[${i}]}" ] && continue | |
288 | [ "${FUNCNAME[${i}]}" == "main" ] && continue | |
289 | ||
290 | error_log " $(printf "%20s" "'${FUNCNAME[${i}]}'") called from ${BASH_SOURCE[$(( ${i} + 1 ))]}:${BASH_LINENO[${i}]}" | |
291 | done | |
292 | } | |
293 | ||
1848564d MT |
294 | function assert() { |
295 | local assertion="$@" | |
296 | ||
297 | if ! ${assertion}; then | |
4c670d7c | 298 | error_log "Assertion '${assertion}' failed." |
711ffac1 | 299 | backtrace |
1848564d MT |
300 | exit ${EXIT_ERROR} |
301 | fi | |
302 | ||
303 | return ${EXIT_OK} | |
304 | } | |
cad8bd85 | 305 | |
711ffac1 MT |
306 | function exec_cmd() { |
307 | local cmd=$@ | |
308 | ||
309 | log DEBUG "Running command: ${cmd}" | |
310 | ||
311 | ${SHELL} ${cmd} | |
312 | local ret=$? | |
313 | ||
314 | #log DEBUG "Returned with code '${ret}'" | |
315 | ||
316 | if [ ${ret} -eq ${EXIT_ERROR_ASSERT} ]; then | |
317 | error_log "Stopping parent process due to assertion error in child process: ${cmd}" | |
318 | exit ${EXIT_ERROR_ASSERT} | |
319 | fi | |
320 | ||
321 | return ${ret} | |
322 | } | |
323 | ||
cad8bd85 MT |
324 | function uppercase() { |
325 | local input | |
326 | read input | |
327 | echo "${input^^}" | |
328 | } | |
d82cf370 | 329 | |
3efecbb3 MT |
330 | function lowercase() { |
331 | local input | |
332 | read input | |
333 | echo "${input,,}" | |
334 | } | |
335 | ||
336 | function seq() { | |
337 | if [ $# -eq 2 ]; then | |
338 | eval echo {${1}..${2}} | |
339 | elif [ $# -eq 3 ]; then | |
340 | eval echo {${1}..${3}..${2}} | |
341 | fi | |
342 | } | |
343 | ||
d82cf370 MT |
344 | function beautify_time() { |
345 | local value=${1} | |
346 | ||
347 | local unit | |
348 | local limit | |
349 | for unit in s m h d w; do | |
350 | case "${unit}" in | |
351 | s|m|h) | |
352 | limit=60 | |
353 | ;; | |
354 | d) | |
355 | limit=24 | |
356 | ;; | |
357 | w) | |
358 | limit=7 | |
359 | ;; | |
360 | esac | |
361 | ||
362 | [ ${value} -lt ${limit} ] && break | |
363 | ||
364 | value=$(( ${value} / ${limit} )) | |
365 | done | |
366 | ||
367 | echo "${value}${unit}" | |
368 | } | |
711ffac1 MT |
369 | |
370 | function beautify_bytes() { | |
371 | local value=${1} | |
372 | ||
373 | local unit | |
374 | local limit=1024 | |
375 | for unit in B k M G T; do | |
376 | [ ${value} -lt ${limit} ] && break | |
377 | value=$(( ${value} / ${limit} )) | |
378 | done | |
379 | ||
380 | echo "${value}${unit}" | |
381 | } | |
943e3f7e MT |
382 | |
383 | function module_load() { | |
384 | local module=${1} | |
385 | ||
386 | if ! grep -q "^${module}" /proc/modules; then | |
387 | log DEBUG "Loading module '${module}'." | |
388 | modprobe ${module} | |
389 | fi | |
390 | } | |
6b3f9c85 MT |
391 | |
392 | function binary_exists() { | |
393 | local binary=${1} | |
394 | ||
395 | if [ -n "$(type -p ${binary})" ]; then | |
396 | return ${EXIT_OK} | |
397 | fi | |
398 | ||
399 | return ${EXIT_ERROR} | |
400 | } | |
d76f5107 MT |
401 | |
402 | function process_kill() { | |
403 | local process=${1} | |
404 | ||
405 | if ! isinteger process; then | |
406 | process=$(pidof ${process}) | |
407 | fi | |
408 | ||
409 | local pid | |
410 | local sig | |
411 | for pid in ${process}; do | |
412 | for sig in 15 9; do | |
413 | [ -d "/proc/${pid}" ] || break | |
414 | ||
415 | kill -${sig} ${pid} | |
416 | sleep 1 | |
417 | done | |
418 | done | |
419 | } | |
feb76eaf MT |
420 | |
421 | function dec() { | |
422 | local hex=${1} | |
423 | ||
424 | if [ "${hex:0:2}" != "0x" ]; then | |
425 | hex="0x${hex}" | |
426 | fi | |
427 | ||
428 | printf "%d\n" "${hex}" | |
429 | } |