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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 | ||
711ffac1 | 42 | # XXX uses tr |
1848564d MT |
43 | function listsort() { |
44 | local i | |
45 | for i in $@; do | |
46 | echo "${i}" | |
47 | done | sort | tr "\n" " " | |
48 | } | |
49 | ||
711ffac1 MT |
50 | function listmatch() { |
51 | local match=${1} | |
52 | shift | |
53 | ||
54 | assert isset match | |
55 | ||
56 | local i | |
57 | for i in $@; do | |
58 | [ "${match}" = "${i}" ] && return ${EXIT_OK} | |
59 | done | |
60 | ||
61 | return ${EXIT_ERROR} | |
62 | } | |
63 | ||
64 | function listlength() { | |
65 | local length=0 | |
66 | ||
67 | local i | |
68 | for i in $@; do | |
69 | length=$(( ${length} + 1 )) | |
70 | done | |
71 | ||
72 | echo "${length}" | |
73 | } | |
74 | ||
1848564d MT |
75 | function config_read() { |
76 | local config_file=${1} | |
77 | ||
78 | if [ -e "${config_file}" ]; then | |
79 | . ${config_file} | |
80 | config_check | |
81 | fi | |
82 | } | |
83 | ||
84 | function config_write() { | |
85 | local config_file=${1} | |
86 | shift | |
87 | ||
88 | # Check if all values to be written are sane | |
89 | config_check | |
90 | ||
1b7a1578 MT |
91 | log DEBUG "Writing configuration file ${config_file}." |
92 | ||
1848564d MT |
93 | > ${config_file} |
94 | ||
95 | local param | |
96 | for param in $(listsort $@); do | |
97 | echo "${param}=\"${!param}\"" >> ${config_file} | |
98 | done | |
99 | } | |
100 | ||
101 | function config_print() { | |
102 | local param | |
103 | ||
104 | for param in $(listsort $@); do | |
105 | printf "%-16s = %s\n" "${param}" "${!param}" | |
106 | done | |
107 | } | |
108 | ||
109 | function config_check() { | |
110 | # If there is a function defined that is called __check | |
111 | # we call that function | |
112 | [ -n "$(type -t _check)" ] && _check | |
113 | } | |
114 | ||
115 | function network_config_set() { | |
116 | while [ $# -gt 0 ]; do | |
117 | case "${1}" in | |
118 | *=*) | |
1b7a1578 MT |
119 | log INFO "Setting configuration option '${1}'". |
120 | eval ${1} | |
1848564d MT |
121 | ;; |
122 | *) | |
123 | warning "Invalid parameter given: ${1}" | |
124 | ;; | |
125 | esac | |
126 | shift | |
127 | done | |
128 | ||
129 | # Write configuration to disk | |
130 | network_config_write | |
131 | } | |
132 | ||
133 | function network_config_read() { | |
134 | config_read ${CONFIG_FILE} | |
135 | } | |
136 | ||
137 | function network_config_write() { | |
138 | config_write ${CONFIG_FILE} ${CONFIG_FILE_PARAMS} | |
139 | } | |
140 | ||
141 | function network_config_print() { | |
142 | config_print ${CONFIG_FILE_PARAMS} | |
143 | } | |
144 | ||
145 | # Speedup function to avoid a call of the basename binary | |
146 | function basename() { | |
147 | echo "${1##*/}" | |
148 | } | |
149 | ||
150 | function enabled() { | |
151 | local param=${1} | |
152 | ||
153 | [ "${!param}" = "yes" ] || [ "${!param}" = "on" ] || [ "${!param}" = "1" ] | |
154 | } | |
155 | ||
156 | function mac_generate() { | |
157 | local mac=() | |
158 | for i in $(seq 0 5); do | |
21dbdbb9 MT |
159 | mac[i]="$(uuid)" |
160 | mac[i]="0x${mac[i]:0:2}" | |
1848564d MT |
161 | done |
162 | ||
163 | # Remove multicast bit | |
164 | # and set address is software assigned | |
165 | # XXX must doublecheck if this works | |
166 | mac[0]=$((mac[0] & 0xfe)) | |
167 | mac[0]=$((mac[0] | 0x02)) | |
168 | ||
169 | local output | |
170 | for i in ${mac[*]}; do | |
21dbdbb9 MT |
171 | if [ -n "${output}" ]; then |
172 | output="${output}:" | |
173 | fi | |
1848564d | 174 | |
21dbdbb9 | 175 | output="${output}$(printf "%02x" ${i})" |
1848564d MT |
176 | done |
177 | ||
178 | # Check if output is valid | |
179 | assert mac_is_valid ${output} | |
180 | ||
181 | echo ${output} | |
182 | } | |
183 | ||
18b43372 MT |
184 | function mac_format() { |
185 | local mac=${1} | |
186 | ||
187 | local output | |
188 | ||
189 | if [ "${#mac}" = "12" ]; then | |
190 | # Add colons (:) to mac address | |
191 | output=${mac:0:2} | |
192 | local i | |
193 | for i in 2 4 6 8 10; do | |
194 | output="${output}:${mac:${i}:2}" | |
195 | done | |
196 | fi | |
197 | ||
198 | assert mac_is_valid ${output} | |
199 | ||
200 | echo "${output}" | |
201 | } | |
202 | ||
1848564d MT |
203 | function mac_is_valid() { |
204 | local mac=${1} | |
205 | ||
206 | [[ ${mac} =~ ^([0-9a-f]{2}\:){5}[0-9a-f]{2}$ ]] | |
207 | } | |
208 | ||
209 | function uuid() { | |
de543653 | 210 | echo $(</proc/sys/kernel/random/uuid) |
1848564d MT |
211 | } |
212 | ||
213 | function isset() { | |
214 | local var=${1} | |
215 | ||
216 | [ -n "${!var}" ] | |
217 | } | |
218 | ||
219 | function isoneof() { | |
220 | local var=${!1} | |
221 | shift | |
222 | ||
223 | for i in $@; do | |
224 | [ "${var}" = "${i}" ] && return ${EXIT_OK} | |
225 | done | |
226 | ||
227 | return ${EXIT_ERROR} | |
228 | } | |
229 | ||
230 | function isbool() { | |
231 | local var=${1} | |
232 | ||
233 | isoneof ${var} 0 1 no yes on off | |
234 | } | |
235 | ||
236 | function isinteger() { | |
237 | local var=${!1} | |
238 | ||
239 | [[ ${var} =~ ^[0-9]+$ ]] | |
240 | } | |
241 | ||
242 | function ismac() { | |
243 | local mac=${!1} | |
244 | ||
245 | mac_is_valid ${mac} | |
246 | } | |
247 | ||
711ffac1 MT |
248 | function backtrace() { |
249 | local start=1 | |
250 | ||
251 | echo # Empty line | |
252 | error_log "Backtrace (most recent call in first line):" | |
253 | ||
254 | local i | |
255 | for i in $(seq ${start} ${#BASH_SOURCE[*]}); do | |
256 | [ -z "${FUNCNAME[${i}]}" ] && continue | |
257 | [ "${FUNCNAME[${i}]}" == "main" ] && continue | |
258 | ||
259 | error_log " $(printf "%20s" "'${FUNCNAME[${i}]}'") called from ${BASH_SOURCE[$(( ${i} + 1 ))]}:${BASH_LINENO[${i}]}" | |
260 | done | |
261 | } | |
262 | ||
1848564d MT |
263 | function assert() { |
264 | local assertion="$@" | |
265 | ||
266 | if ! ${assertion}; then | |
4c670d7c | 267 | error_log "Assertion '${assertion}' failed." |
711ffac1 | 268 | backtrace |
1848564d MT |
269 | exit ${EXIT_ERROR} |
270 | fi | |
271 | ||
272 | return ${EXIT_OK} | |
273 | } | |
cad8bd85 | 274 | |
711ffac1 MT |
275 | function exec_cmd() { |
276 | local cmd=$@ | |
277 | ||
278 | log DEBUG "Running command: ${cmd}" | |
279 | ||
280 | ${SHELL} ${cmd} | |
281 | local ret=$? | |
282 | ||
283 | #log DEBUG "Returned with code '${ret}'" | |
284 | ||
285 | if [ ${ret} -eq ${EXIT_ERROR_ASSERT} ]; then | |
286 | error_log "Stopping parent process due to assertion error in child process: ${cmd}" | |
287 | exit ${EXIT_ERROR_ASSERT} | |
288 | fi | |
289 | ||
290 | return ${ret} | |
291 | } | |
292 | ||
cad8bd85 MT |
293 | function uppercase() { |
294 | local input | |
295 | read input | |
296 | echo "${input^^}" | |
297 | } | |
d82cf370 | 298 | |
3efecbb3 MT |
299 | function lowercase() { |
300 | local input | |
301 | read input | |
302 | echo "${input,,}" | |
303 | } | |
304 | ||
305 | function seq() { | |
306 | if [ $# -eq 2 ]; then | |
307 | eval echo {${1}..${2}} | |
308 | elif [ $# -eq 3 ]; then | |
309 | eval echo {${1}..${3}..${2}} | |
310 | fi | |
311 | } | |
312 | ||
d82cf370 MT |
313 | function beautify_time() { |
314 | local value=${1} | |
315 | ||
316 | local unit | |
317 | local limit | |
318 | for unit in s m h d w; do | |
319 | case "${unit}" in | |
320 | s|m|h) | |
321 | limit=60 | |
322 | ;; | |
323 | d) | |
324 | limit=24 | |
325 | ;; | |
326 | w) | |
327 | limit=7 | |
328 | ;; | |
329 | esac | |
330 | ||
331 | [ ${value} -lt ${limit} ] && break | |
332 | ||
333 | value=$(( ${value} / ${limit} )) | |
334 | done | |
335 | ||
336 | echo "${value}${unit}" | |
337 | } | |
711ffac1 MT |
338 | |
339 | function beautify_bytes() { | |
340 | local value=${1} | |
341 | ||
342 | local unit | |
343 | local limit=1024 | |
344 | for unit in B k M G T; do | |
345 | [ ${value} -lt ${limit} ] && break | |
346 | value=$(( ${value} / ${limit} )) | |
347 | done | |
348 | ||
349 | echo "${value}${unit}" | |
350 | } |