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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 | ||
97cb552e MT |
22 | # A simple print statement |
23 | function print() { | |
acc9efd5 MT |
24 | local fmt=${1}; shift |
25 | ||
26 | printf "${fmt}\n" "$@" | |
97cb552e MT |
27 | } |
28 | ||
1848564d MT |
29 | # Print a pretty error message |
30 | function error() { | |
2ab7f50f | 31 | echo -e " ${COLOUR_ERROR}ERROR${COLOUR_NORMAL} : $@" >&2 |
1848564d MT |
32 | } |
33 | ||
1b7a1578 | 34 | function error_log() { |
1b7a1578 MT |
35 | log ERROR "$@" |
36 | } | |
37 | ||
1848564d MT |
38 | # Print a pretty warn message |
39 | function warning() { | |
2ab7f50f | 40 | echo -e " ${COLOUR_WARN}WARNING${COLOUR_NORMAL}: $@" >&2 |
1848564d MT |
41 | } |
42 | ||
1b7a1578 | 43 | function warning_log() { |
1b7a1578 MT |
44 | log WARNING "$@" |
45 | } | |
46 | ||
1848564d MT |
47 | function listsort() { |
48 | local i | |
ae22de29 | 49 | for i in $@; do |
ab29f8c4 | 50 | echo "${i}" |
ae22de29 | 51 | done | sort | tr '\n' ' ' |
ab29f8c4 | 52 | echo |
1848564d MT |
53 | } |
54 | ||
711ffac1 MT |
55 | function listmatch() { |
56 | local match=${1} | |
57 | shift | |
58 | ||
59 | assert isset match | |
60 | ||
61 | local i | |
62 | for i in $@; do | |
63 | [ "${match}" = "${i}" ] && return ${EXIT_OK} | |
64 | done | |
65 | ||
66 | return ${EXIT_ERROR} | |
67 | } | |
68 | ||
69 | function listlength() { | |
70 | local length=0 | |
71 | ||
72 | local i | |
73 | for i in $@; do | |
74 | length=$(( ${length} + 1 )) | |
75 | done | |
76 | ||
77 | echo "${length}" | |
78 | } | |
79 | ||
1848564d MT |
80 | # Speedup function to avoid a call of the basename binary |
81 | function basename() { | |
82 | echo "${1##*/}" | |
83 | } | |
84 | ||
790b7ec9 MT |
85 | function touch() { |
86 | local file=${1} | |
87 | ||
88 | : > ${file} | |
89 | } | |
90 | ||
1848564d MT |
91 | function enabled() { |
92 | local param=${1} | |
93 | ||
acc9efd5 | 94 | listmatch "${!param}" yes on true 1 |
1848564d MT |
95 | } |
96 | ||
97 | function mac_generate() { | |
790b7ec9 MT |
98 | # Get a bunch of random hex digits |
99 | # and remove all dashes from the input. | |
100 | local random=$(</proc/sys/kernel/random/uuid) | |
101 | random=${random//-/} | |
102 | assert isset random | |
1848564d MT |
103 | |
104 | local output | |
790b7ec9 MT |
105 | |
106 | local i o | |
107 | for i in $(seq 0 5); do | |
108 | o="0x${random:0:2}" | |
109 | random="${random:2:${#random}}" | |
110 | ||
111 | case "${i}" in | |
112 | 0) | |
113 | # Remove multicast bit | |
114 | # and set address is software assigned | |
115 | o=$(( ${o} & 0xfe )) | |
116 | o=$(( ${o} | 0x02 )) | |
117 | ||
118 | printf -v output "%02x" "${o}" | |
119 | ;; | |
120 | *) | |
121 | printf -v output "%s:%02x" "${output}" "${o}" | |
122 | ;; | |
123 | esac | |
1848564d MT |
124 | done |
125 | ||
126 | # Check if output is valid | |
127 | assert mac_is_valid ${output} | |
128 | ||
790b7ec9 | 129 | echo "${output}" |
1848564d MT |
130 | } |
131 | ||
18b43372 MT |
132 | function mac_format() { |
133 | local mac=${1} | |
134 | ||
135 | local output | |
136 | ||
137 | if [ "${#mac}" = "12" ]; then | |
138 | # Add colons (:) to mac address | |
139 | output=${mac:0:2} | |
140 | local i | |
141 | for i in 2 4 6 8 10; do | |
142 | output="${output}:${mac:${i}:2}" | |
143 | done | |
144 | fi | |
145 | ||
146 | assert mac_is_valid ${output} | |
147 | ||
148 | echo "${output}" | |
149 | } | |
150 | ||
1848564d MT |
151 | function mac_is_valid() { |
152 | local mac=${1} | |
153 | ||
154 | [[ ${mac} =~ ^([0-9a-f]{2}\:){5}[0-9a-f]{2}$ ]] | |
155 | } | |
156 | ||
157 | function uuid() { | |
de543653 | 158 | echo $(</proc/sys/kernel/random/uuid) |
1848564d MT |
159 | } |
160 | ||
161 | function isset() { | |
162 | local var=${1} | |
163 | ||
164 | [ -n "${!var}" ] | |
165 | } | |
166 | ||
943e3f7e | 167 | # XXX Nearly same as listmatch |
1848564d MT |
168 | function isoneof() { |
169 | local var=${!1} | |
170 | shift | |
171 | ||
172 | for i in $@; do | |
173 | [ "${var}" = "${i}" ] && return ${EXIT_OK} | |
174 | done | |
175 | ||
176 | return ${EXIT_ERROR} | |
177 | } | |
178 | ||
179 | function isbool() { | |
180 | local var=${1} | |
181 | ||
182 | isoneof ${var} 0 1 no yes on off | |
183 | } | |
184 | ||
185 | function isinteger() { | |
186 | local var=${!1} | |
187 | ||
188 | [[ ${var} =~ ^[0-9]+$ ]] | |
189 | } | |
190 | ||
191 | function ismac() { | |
192 | local mac=${!1} | |
193 | ||
194 | mac_is_valid ${mac} | |
195 | } | |
196 | ||
711ffac1 MT |
197 | function backtrace() { |
198 | local start=1 | |
199 | ||
200 | echo # Empty line | |
201 | error_log "Backtrace (most recent call in first line):" | |
202 | ||
203 | local i | |
204 | for i in $(seq ${start} ${#BASH_SOURCE[*]}); do | |
205 | [ -z "${FUNCNAME[${i}]}" ] && continue | |
206 | [ "${FUNCNAME[${i}]}" == "main" ] && continue | |
207 | ||
208 | error_log " $(printf "%20s" "'${FUNCNAME[${i}]}'") called from ${BASH_SOURCE[$(( ${i} + 1 ))]}:${BASH_LINENO[${i}]}" | |
209 | done | |
210 | } | |
211 | ||
1848564d MT |
212 | function assert() { |
213 | local assertion="$@" | |
214 | ||
215 | if ! ${assertion}; then | |
4c670d7c | 216 | error_log "Assertion '${assertion}' failed." |
711ffac1 | 217 | backtrace |
1848564d MT |
218 | exit ${EXIT_ERROR} |
219 | fi | |
220 | ||
221 | return ${EXIT_OK} | |
222 | } | |
cad8bd85 | 223 | |
711ffac1 MT |
224 | function exec_cmd() { |
225 | local cmd=$@ | |
226 | ||
227 | log DEBUG "Running command: ${cmd}" | |
228 | ||
b816e04b | 229 | DEBUG=${DEBUG} \ |
8c63fa13 MT |
230 | LOG_DISABLE_STDOUT="${LOG_DISABLE_STDOUT}" \ |
231 | LOG_FACILITY="${LOG_FACILITY}" \ | |
b816e04b | 232 | ${SHELL} ${cmd} |
711ffac1 MT |
233 | local ret=$? |
234 | ||
235 | #log DEBUG "Returned with code '${ret}'" | |
236 | ||
237 | if [ ${ret} -eq ${EXIT_ERROR_ASSERT} ]; then | |
238 | error_log "Stopping parent process due to assertion error in child process: ${cmd}" | |
239 | exit ${EXIT_ERROR_ASSERT} | |
240 | fi | |
241 | ||
242 | return ${ret} | |
243 | } | |
244 | ||
b816e04b MT |
245 | function cmd() { |
246 | local cmd=$@ | |
247 | ||
248 | log DEBUG "Running command: ${cmd}" | |
249 | ||
250 | ${cmd} | |
251 | local ret=$? | |
252 | ||
253 | log DEBUG "Returned with code '${ret}'" | |
254 | ||
255 | return ${ret} | |
256 | } | |
257 | ||
98146c00 MT |
258 | function cmd_quiet() { |
259 | cmd $@ &>/dev/null | |
3efecbb3 MT |
260 | } |
261 | ||
262 | function seq() { | |
263 | if [ $# -eq 2 ]; then | |
264 | eval echo {${1}..${2}} | |
265 | elif [ $# -eq 3 ]; then | |
266 | eval echo {${1}..${3}..${2}} | |
267 | fi | |
268 | } | |
269 | ||
d82cf370 MT |
270 | function beautify_time() { |
271 | local value=${1} | |
272 | ||
273 | local unit | |
274 | local limit | |
275 | for unit in s m h d w; do | |
276 | case "${unit}" in | |
277 | s|m|h) | |
278 | limit=60 | |
279 | ;; | |
280 | d) | |
281 | limit=24 | |
282 | ;; | |
283 | w) | |
284 | limit=7 | |
285 | ;; | |
286 | esac | |
287 | ||
288 | [ ${value} -lt ${limit} ] && break | |
289 | ||
290 | value=$(( ${value} / ${limit} )) | |
291 | done | |
292 | ||
293 | echo "${value}${unit}" | |
294 | } | |
711ffac1 MT |
295 | |
296 | function beautify_bytes() { | |
297 | local value=${1} | |
298 | ||
299 | local unit | |
300 | local limit=1024 | |
301 | for unit in B k M G T; do | |
302 | [ ${value} -lt ${limit} ] && break | |
303 | value=$(( ${value} / ${limit} )) | |
304 | done | |
305 | ||
306 | echo "${value}${unit}" | |
307 | } | |
943e3f7e MT |
308 | |
309 | function module_load() { | |
310 | local module=${1} | |
311 | ||
312 | if ! grep -q "^${module}" /proc/modules; then | |
313 | log DEBUG "Loading module '${module}'." | |
314 | modprobe ${module} | |
315 | fi | |
316 | } | |
6b3f9c85 MT |
317 | |
318 | function binary_exists() { | |
319 | local binary=${1} | |
320 | ||
321 | if [ -n "$(type -p ${binary})" ]; then | |
322 | return ${EXIT_OK} | |
323 | fi | |
324 | ||
325 | return ${EXIT_ERROR} | |
326 | } | |
d76f5107 MT |
327 | |
328 | function process_kill() { | |
329 | local process=${1} | |
330 | ||
331 | if ! isinteger process; then | |
332 | process=$(pidof ${process}) | |
333 | fi | |
334 | ||
335 | local pid | |
336 | local sig | |
337 | for pid in ${process}; do | |
338 | for sig in 15 9; do | |
339 | [ -d "/proc/${pid}" ] || break | |
340 | ||
341 | kill -${sig} ${pid} | |
342 | sleep 1 | |
343 | done | |
344 | done | |
345 | } | |
feb76eaf MT |
346 | |
347 | function dec() { | |
348 | local hex=${1} | |
349 | ||
350 | if [ "${hex:0:2}" != "0x" ]; then | |
351 | hex="0x${hex}" | |
352 | fi | |
353 | ||
354 | printf "%d\n" "${hex}" | |
355 | } | |
3a7fef62 MT |
356 | |
357 | function network_is_running() { | |
358 | # Check, if the network service is running. | |
359 | service_is_active network | |
360 | } |