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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 | 22 | # A simple print statement |
1c6a4e30 | 23 | print() { |
acc9efd5 MT |
24 | local fmt=${1}; shift |
25 | ||
40e3553f | 26 | printf -- "${fmt}\n" "$@" |
97cb552e MT |
27 | } |
28 | ||
67baa452 MT |
29 | print_indent() { |
30 | local i=${1} | |
31 | shift | |
32 | ||
33 | while (( i-- )); do | |
34 | printf "\t" | |
35 | done | |
36 | ||
37 | print "%s" "$@" | |
38 | } | |
39 | ||
cb965348 MT |
40 | # The args() function takes a number of arguments like |
41 | # var1="abc d" var2="abc" var3="abcd e" | |
42 | # and splits them into several arguments, devided by newline | |
1c6a4e30 | 43 | args() { |
cb965348 MT |
44 | echo "$@" | xargs printf "%s\n" |
45 | } | |
46 | ||
1c6a4e30 | 47 | unquote() { |
04854c77 MT |
48 | local var="$@" |
49 | ||
50 | if [ "${var:0:1}" = "\"" ]; then | |
51 | var=${var:1} | |
52 | fi | |
53 | ||
54 | local last=$(( ${#var} - 1 )) | |
55 | if [ ${last} -ge 0 ] && [ "${var:${last}:1}" = "\"" ]; then | |
56 | var=${var:0:${last}} | |
57 | fi | |
58 | ||
59 | print "${var}" | |
60 | } | |
61 | ||
1c6a4e30 | 62 | quote() { |
04854c77 MT |
63 | print "\"%s\"" "$@" |
64 | } | |
65 | ||
1c6a4e30 | 66 | strip() { |
fe52c5e0 MT |
67 | local value="$@" |
68 | ||
69 | # remove leading whitespace characters | |
70 | value="${value#"${value%%[![:space:]]*}"}" | |
71 | ||
72 | # remove trailing whitespace characters | |
73 | value="${value%"${value##*[![:space:]]}"}" | |
74 | ||
75 | print "${value}" | |
76 | } | |
77 | ||
1848564d | 78 | # Print a pretty error message |
1c6a4e30 | 79 | error() { |
fcbf6823 | 80 | echo -e " ${CLR_RED_B}ERROR${CLR_RESET} : $@" >&2 |
1848564d MT |
81 | } |
82 | ||
1c6a4e30 | 83 | error_log() { |
1b7a1578 MT |
84 | log ERROR "$@" |
85 | } | |
86 | ||
1848564d | 87 | # Print a pretty warn message |
1c6a4e30 | 88 | warning() { |
fcbf6823 | 89 | echo -e " ${CLR_YELLOW_B}WARNING${CLR_RESET}: $@" >&2 |
1848564d MT |
90 | } |
91 | ||
1c6a4e30 | 92 | warning_log() { |
1b7a1578 MT |
93 | log WARNING "$@" |
94 | } | |
95 | ||
1848564d | 96 | # Speedup function to avoid a call of the basename binary |
1c6a4e30 | 97 | basename() { |
1848564d MT |
98 | echo "${1##*/}" |
99 | } | |
100 | ||
1c6a4e30 | 101 | format() { |
e5651e17 MT |
102 | local key=${1} |
103 | assert isset key | |
104 | ||
105 | local format=${2} | |
106 | assert isset format | |
107 | ||
108 | shift 2 | |
109 | ||
110 | printf -v "${key}" "${format}" "$@" | |
111 | } | |
112 | ||
d13929d4 MT |
113 | format_time() { |
114 | local s=${1} | |
115 | local ret m | |
116 | ||
117 | local units="s m h" | |
118 | ||
119 | local unit | |
120 | for unit in ${units}; do | |
121 | m=$(( ${s} % 60 )) | |
122 | s=$(( ${s} / 60 )) | |
123 | ||
124 | if [ ${m} -gt 0 ]; then | |
125 | ret="${m}${unit} ${ret}" | |
126 | fi | |
127 | done | |
128 | ||
129 | # Remove whitespace | |
130 | echo ${ret} | |
131 | } | |
132 | ||
b383499d MT |
133 | parse_time() { |
134 | local ret=0 | |
135 | ||
136 | local arg | |
2212045f | 137 | for arg in "$@"; do |
b383499d MT |
138 | local unit |
139 | ||
140 | case "${arg}" in | |
141 | *h|*m|*s) | |
142 | # Store unit | |
143 | unit="${arg: -1}" | |
144 | ||
145 | # Remove unit | |
146 | arg="${arg:0:-1}" | |
147 | ;; | |
148 | esac | |
149 | ||
150 | if ! isinteger arg; then | |
151 | return ${EXIT_ERROR} | |
152 | fi | |
153 | ||
154 | # Convert hours and minutes into seconds | |
155 | case "${unit}" in | |
156 | h) | |
157 | arg=$(( ${arg} * 3600 )) | |
158 | ;; | |
159 | m) | |
160 | arg=$(( ${arg} * 60 )) | |
161 | ;; | |
162 | esac | |
163 | ||
164 | # Add up everything | |
165 | ret=$(( ${ret} + ${arg} )) | |
166 | done | |
167 | ||
168 | print "${ret}" | |
169 | } | |
170 | ||
1c6a4e30 | 171 | assign() { |
b79ad79b MT |
172 | local key=${1} |
173 | assert isset key | |
174 | shift | |
175 | ||
e5651e17 | 176 | format "${key}" "%s" "$@" |
b79ad79b MT |
177 | } |
178 | ||
1c6a4e30 | 179 | fread() { |
b79ad79b MT |
180 | local file=${1} |
181 | assert isset file | |
182 | ||
183 | [ -r "${file}" ] || return ${EXIT_ERROR} | |
184 | ||
185 | print "$(<${file})" | |
186 | } | |
187 | ||
1c6a4e30 | 188 | fwrite() { |
b79ad79b MT |
189 | local file=${1} |
190 | assert isset file | |
191 | shift | |
192 | ||
644d3bb8 MT |
193 | if ! print "%s" "$@" > ${file} 2>/dev/null; then |
194 | error "Could not write to file: ${file}" | |
195 | return ${EXIT_ERROR} | |
196 | fi | |
197 | ||
198 | return ${EXIT_OK} | |
199 | } | |
200 | ||
201 | fappend() { | |
202 | local file=${1} | |
203 | assert isset file | |
204 | shift | |
205 | ||
e1947a76 | 206 | if [ -e "${file}" ] && [ ! -w "${file}" ]; then |
8d4e0d52 MT |
207 | log ERROR "${file}: No such file" |
208 | return ${EXIT_ERROR} | |
209 | fi | |
210 | ||
211 | print "%s" "$@" >> ${file} 2>/dev/null | |
b79ad79b MT |
212 | } |
213 | ||
fa33d830 MT |
214 | file_delete() { |
215 | local file=${1} | |
216 | ||
217 | unlink "${file}" 2>/dev/null | |
218 | } | |
219 | ||
e1947a76 MT |
220 | file_exists() { |
221 | local file=${1} | |
222 | ||
223 | [ -e "${file}" ] && return ${EXIT_TRUE} || return ${EXIT_FALSE} | |
224 | } | |
225 | ||
226 | file_is_newer_than() { | |
227 | local file1="${1}" | |
228 | local file2="${2}" | |
229 | ||
230 | local age1=$(file_get_age "${file1}") | |
231 | local age2=$(file_get_age "${file2}") | |
232 | ||
233 | if [ ${age1} -gt ${age2} ]; then | |
234 | return ${EXIT_TRUE} | |
235 | else | |
236 | return ${EXIT_FALSE} | |
237 | fi | |
238 | } | |
239 | ||
240 | file_get_age() { | |
241 | local file="${1}" | |
242 | ||
243 | if [ -e "${file}" ]; then | |
244 | stat --format="%Y" "${file}" | |
245 | return $? | |
246 | fi | |
247 | ||
248 | return ${EXIT_ERROR} | |
249 | } | |
250 | ||
7c91c167 MT |
251 | file_to_log() { |
252 | local level="${1}" | |
253 | assert isset level | |
254 | ||
255 | local file="${2}" | |
256 | assert file_exists "${file}" | |
257 | ||
258 | local line | |
259 | while read line; do | |
260 | log "${level}" "${line}" | |
261 | done < "${file}" | |
262 | } | |
263 | ||
04c27fe9 MT |
264 | make_directory() { |
265 | local path="${1}" | |
266 | ||
72848301 MT |
267 | # Exit silently when directory already exists |
268 | if [ -d "${path}" ]; then | |
269 | return ${EXIT_OK} | |
270 | fi | |
271 | ||
39aae674 MT |
272 | if ! mkdir -p "${path}"; then |
273 | log ERROR "Could not create directory ${path}" | |
274 | return ${EXIT_ERROR} | |
275 | fi | |
276 | ||
277 | log DEBUG "Created directory ${path}" | |
278 | return ${EXIT_OK} | |
04c27fe9 MT |
279 | } |
280 | ||
46954be3 | 281 | make_parent_directory() { |
c041b631 MT |
282 | local path="${1}" |
283 | ||
04c27fe9 | 284 | make_directory "$(dirname "${path}")" |
c041b631 MT |
285 | } |
286 | ||
1c6a4e30 | 287 | enabled() { |
1848564d MT |
288 | local param=${1} |
289 | ||
e726ef8d | 290 | list_match "${!param}" yes on true 1 |
1848564d MT |
291 | } |
292 | ||
0842edcc MT |
293 | disabled() { |
294 | local param="${1}" | |
295 | ||
296 | list_match "${!param}" no off false 0 | |
297 | } | |
298 | ||
1c6a4e30 | 299 | mac_generate() { |
fb1416c6 MT |
300 | local b="$(random 12)" |
301 | ||
302 | # Remove multicast bit | |
303 | # and set address is software assigned | |
304 | local first_byte=$(( 0x${b:0:2} & 0xfe )) | |
305 | first_byte=$(( ${first_byte} | 0x02 )) | |
1848564d MT |
306 | |
307 | local output | |
fb1416c6 | 308 | printf -v output "%02x" "${first_byte}" |
790b7ec9 | 309 | |
fb1416c6 | 310 | output="${output}:${b:2:2}:${b:4:2}:${b:6:2}:${b:8:2}:${b:10:2}" |
1848564d MT |
311 | |
312 | # Check if output is valid | |
fb1416c6 | 313 | assert mac_is_valid "${output}" |
1848564d | 314 | |
790b7ec9 | 315 | echo "${output}" |
1848564d MT |
316 | } |
317 | ||
1c6a4e30 | 318 | mac_format() { |
18b43372 | 319 | local mac=${1} |
48bc31eb | 320 | assert isset mac |
18b43372 | 321 | |
48bc31eb MT |
322 | # Remove all colons and make the rest lowercase. |
323 | mac=${mac//:/} | |
324 | mac=${mac,,} | |
18b43372 | 325 | |
48bc31eb | 326 | local output |
18b43372 MT |
327 | if [ "${#mac}" = "12" ]; then |
328 | # Add colons (:) to mac address | |
329 | output=${mac:0:2} | |
330 | local i | |
331 | for i in 2 4 6 8 10; do | |
332 | output="${output}:${mac:${i}:2}" | |
333 | done | |
48bc31eb MT |
334 | else |
335 | output=${mac} | |
18b43372 MT |
336 | fi |
337 | ||
338 | assert mac_is_valid ${output} | |
339 | ||
48bc31eb | 340 | print "${output}" |
18b43372 MT |
341 | } |
342 | ||
1c6a4e30 | 343 | mac_is_valid() { |
1848564d MT |
344 | local mac=${1} |
345 | ||
346 | [[ ${mac} =~ ^([0-9a-f]{2}\:){5}[0-9a-f]{2}$ ]] | |
347 | } | |
348 | ||
01ff07e9 MT |
349 | # Converts the given string to lowercase and returns true if it is a valid FQDN |
350 | fqdn_is_valid() { | |
351 | local fqdn="${1}" | |
352 | ||
353 | if grep -qP "^(?!:\/\/)(?=.{1,255}$)((.{1,63}\.){1,127}(?![0-9]*$)[a-z0-9-]+\.?)$" <<< "${fqdn,,}"; then | |
354 | return ${EXIT_TRUE} | |
355 | fi | |
356 | ||
357 | return ${EXIT_FALSE} | |
358 | } | |
359 | ||
1c6a4e30 | 360 | uuid() { |
de543653 | 361 | echo $(</proc/sys/kernel/random/uuid) |
1848564d MT |
362 | } |
363 | ||
a24cff8f JS |
364 | abs() { |
365 | local val=${1} | |
366 | ||
367 | if [ ${val} -lt 0 ]; then | |
368 | (( val *= -1 )) | |
369 | fi | |
370 | ||
371 | echo ${val} | |
372 | } | |
373 | ||
fb1416c6 MT |
374 | rand() { |
375 | local uuid="$(uuid)" | |
376 | echo "${uuid//-/}" | |
377 | } | |
378 | ||
379 | random() { | |
380 | local length="${1:-8}" | |
381 | ||
382 | local random | |
383 | while [ ${#random} -lt ${length} ]; do | |
384 | random="${random}$(rand)" | |
385 | done | |
386 | ||
387 | echo "${random:0:${length}}" | |
388 | } | |
389 | ||
1c6a4e30 | 390 | isset() { |
1848564d MT |
391 | local var=${1} |
392 | ||
393 | [ -n "${!var}" ] | |
394 | } | |
395 | ||
1c6a4e30 | 396 | isoneof() { |
1848564d MT |
397 | local var=${!1} |
398 | shift | |
399 | ||
e726ef8d | 400 | list_match "${var}" "$@" |
1848564d MT |
401 | } |
402 | ||
1c6a4e30 | 403 | isbool() { |
1848564d MT |
404 | local var=${1} |
405 | ||
ec6afbdd | 406 | isoneof ${var} 0 1 no yes on off true false |
1848564d MT |
407 | } |
408 | ||
1c6a4e30 | 409 | isinteger() { |
1848564d MT |
410 | local var=${!1} |
411 | ||
412 | [[ ${var} =~ ^[0-9]+$ ]] | |
413 | } | |
414 | ||
1c6a4e30 | 415 | ismac() { |
1848564d MT |
416 | local mac=${!1} |
417 | ||
418 | mac_is_valid ${mac} | |
419 | } | |
420 | ||
1c6a4e30 | 421 | isipaddress() { |
fef4edaf MT |
422 | local addr=${!1} |
423 | ||
424 | ip_is_valid ${addr} | |
425 | } | |
426 | ||
48a64768 JS |
427 | mtu_is_valid() { |
428 | local proto=${1} | |
429 | local mtu=${2} | |
430 | ||
431 | case ${proto} in | |
ef53293c | 432 | ethernet|ipv4) |
48a64768 JS |
433 | [ ${mtu} -ge 576 ] && [ ${mtu} -le 9000 ] |
434 | ;; | |
435 | ipv6) | |
436 | [ ${mtu} -ge 1280 ] && [ ${mtu} -le 9000 ] | |
437 | ;; | |
438 | *) | |
439 | error "${proto} is not a valid proto" | |
440 | return ${EXIT_ERROR} | |
441 | ;; | |
442 | esac | |
443 | } | |
444 | ||
1c6a4e30 | 445 | backtrace() { |
711ffac1 MT |
446 | local start=1 |
447 | ||
448 | echo # Empty line | |
449 | error_log "Backtrace (most recent call in first line):" | |
450 | ||
04608623 | 451 | local i source |
711ffac1 MT |
452 | for i in $(seq ${start} ${#BASH_SOURCE[*]}); do |
453 | [ -z "${FUNCNAME[${i}]}" ] && continue | |
6396ccab MT |
454 | |
455 | # Print called binary with arguments. | |
456 | if [ "${FUNCNAME[${i}]}" == "main" ]; then | |
457 | local args="$(list_reverse ${BASH_ARGV[*]})" | |
458 | printf -v source "%20s" "$0" | |
459 | error_log " ${source} ${args}" | |
460 | continue | |
461 | fi | |
711ffac1 | 462 | |
04608623 MT |
463 | source=${BASH_SOURCE[$(( ${i} + 1 ))]} |
464 | error_log " $(printf "%20s" "'${FUNCNAME[${i}]}'") called from ${source:-<shell>}:${BASH_LINENO[${i}]}" | |
711ffac1 MT |
465 | done |
466 | } | |
467 | ||
1c6a4e30 | 468 | assert() { |
1848564d MT |
469 | local assertion="$@" |
470 | ||
471 | if ! ${assertion}; then | |
4c670d7c | 472 | error_log "Assertion '${assertion}' failed." |
711ffac1 | 473 | backtrace |
cfbe0802 | 474 | exit ${EXIT_ERROR_ASSERT} |
1848564d MT |
475 | fi |
476 | ||
477 | return ${EXIT_OK} | |
478 | } | |
cad8bd85 | 479 | |
b0b2f995 MT |
480 | # This function checks, if the given argument is an assert error |
481 | # exit code. If this is the case, the script will halt immediately. | |
1c6a4e30 | 482 | assert_check_retval() { |
b0b2f995 MT |
483 | local ret=${1} |
484 | ||
485 | if [ ${ret} -eq ${EXIT_ERROR_ASSERT} ]; then | |
486 | exit ${EXIT_ERROR_ASSERT} | |
487 | fi | |
488 | ||
489 | return ${ret} | |
490 | } | |
491 | ||
2bb20bbd SS |
492 | # This function executes the given command and inverses the return code |
493 | not() { | |
494 | local command="$@" | |
495 | ||
496 | ${command} && return ${EXIT_FALSE} || return ${EXIT_TRUE} | |
497 | } | |
498 | ||
1c6a4e30 | 499 | exec_cmd() { |
711ffac1 MT |
500 | local cmd=$@ |
501 | ||
502 | log DEBUG "Running command: ${cmd}" | |
503 | ||
b816e04b | 504 | DEBUG=${DEBUG} \ |
8c63fa13 MT |
505 | LOG_DISABLE_STDOUT="${LOG_DISABLE_STDOUT}" \ |
506 | LOG_FACILITY="${LOG_FACILITY}" \ | |
b816e04b | 507 | ${SHELL} ${cmd} |
711ffac1 MT |
508 | local ret=$? |
509 | ||
510 | #log DEBUG "Returned with code '${ret}'" | |
511 | ||
512 | if [ ${ret} -eq ${EXIT_ERROR_ASSERT} ]; then | |
513 | error_log "Stopping parent process due to assertion error in child process: ${cmd}" | |
514 | exit ${EXIT_ERROR_ASSERT} | |
515 | fi | |
516 | ||
517 | return ${ret} | |
518 | } | |
519 | ||
1c6a4e30 | 520 | cmd() { |
b816e04b MT |
521 | local cmd=$@ |
522 | ||
523 | log DEBUG "Running command: ${cmd}" | |
524 | ||
4b75fc83 MT |
525 | env -i -- \ |
526 | HOME="${HOME}" \ | |
527 | PATH="${PATH}" \ | |
528 | TERM="${TERM}" \ | |
529 | ${cmd} | |
530 | local ret=$? | |
b816e04b | 531 | |
4b75fc83 MT |
532 | case "${ret}" in |
533 | ${EXIT_OK}) | |
534 | return ${EXIT_OK} | |
535 | ;; | |
536 | *) | |
537 | log DEBUG "Returned with code '${ret}'" | |
538 | return ${ret} | |
539 | ;; | |
540 | esac | |
b816e04b MT |
541 | } |
542 | ||
1c6a4e30 | 543 | cmd_quiet() { |
2212045f | 544 | cmd "$@" &>/dev/null |
3efecbb3 MT |
545 | } |
546 | ||
1c6a4e30 | 547 | cmd_exec() { |
85f35e51 | 548 | local cmd=( "$@" ) |
f80ce052 MT |
549 | |
550 | log DEBUG "Exec'ing command: ${cmd}" | |
551 | ||
85f35e51 | 552 | exec "${cmd[@]}" |
f80ce052 MT |
553 | |
554 | log ERROR "Could not exec-ute: ${cmd}" | |
555 | exit ${EXIT_ERROR} | |
556 | } | |
557 | ||
1c6a4e30 | 558 | cmd_not_implemented() { |
2181765d MT |
559 | assert false "not implemented" |
560 | } | |
561 | ||
f5ee091e MT |
562 | # Executes the given command in background |
563 | cmd_background() { | |
2212045f | 564 | cmd_quiet "$@" & |
f5ee091e MT |
565 | } |
566 | ||
567 | # Prints the PID of the process that was started last | |
568 | cmd_background_get_pid() { | |
569 | print "${!}" | |
570 | } | |
571 | ||
572 | cmd_background_result() { | |
573 | local pids=$@ | |
574 | ||
575 | wait ${pids} | |
576 | } | |
577 | ||
b8026986 | 578 | # Increase security of the read command |
1c6a4e30 | 579 | read() { |
2212045f | 580 | builtin read -r "$@" |
b8026986 MT |
581 | } |
582 | ||
1c6a4e30 | 583 | seq() { |
3efecbb3 MT |
584 | if [ $# -eq 2 ]; then |
585 | eval echo {${1}..${2}} | |
586 | elif [ $# -eq 3 ]; then | |
587 | eval echo {${1}..${3}..${2}} | |
588 | fi | |
589 | } | |
590 | ||
de72bd91 MT |
591 | range() { |
592 | eval echo {0..$(( ${1} - 1 ))} | |
593 | } | |
594 | ||
595 | count() { | |
596 | local i=0 | |
597 | ||
598 | while read; do | |
599 | ((i++)) | |
600 | done | |
601 | ||
602 | echo ${i} | |
603 | } | |
604 | ||
1c6a4e30 | 605 | which() { |
2212045f | 606 | type -P "$@" |
76e6cd51 MT |
607 | } |
608 | ||
fe52c5e0 | 609 | # Prints the number of seconds since epoch. |
1c6a4e30 | 610 | timestamp() { |
fe52c5e0 MT |
611 | date -u "+%s" |
612 | } | |
613 | ||
1c6a4e30 | 614 | beautify_time() { |
d82cf370 MT |
615 | local value=${1} |
616 | ||
617 | local unit | |
618 | local limit | |
619 | for unit in s m h d w; do | |
620 | case "${unit}" in | |
621 | s|m|h) | |
622 | limit=60 | |
623 | ;; | |
624 | d) | |
625 | limit=24 | |
626 | ;; | |
627 | w) | |
628 | limit=7 | |
629 | ;; | |
630 | esac | |
631 | ||
632 | [ ${value} -lt ${limit} ] && break | |
633 | ||
634 | value=$(( ${value} / ${limit} )) | |
635 | done | |
636 | ||
637 | echo "${value}${unit}" | |
638 | } | |
711ffac1 | 639 | |
1c6a4e30 | 640 | beautify_bytes() { |
711ffac1 MT |
641 | local value=${1} |
642 | ||
643 | local unit | |
644 | local limit=1024 | |
645 | for unit in B k M G T; do | |
646 | [ ${value} -lt ${limit} ] && break | |
647 | value=$(( ${value} / ${limit} )) | |
648 | done | |
649 | ||
650 | echo "${value}${unit}" | |
651 | } | |
943e3f7e | 652 | |
1c6a4e30 | 653 | module_load() { |
943e3f7e MT |
654 | local module=${1} |
655 | ||
dd891ec4 MT |
656 | # Do nothing if the module is already loaded |
657 | if [ -d "/sys/module/${module//-/_}" ]; then | |
658 | return ${EXIT_OK} | |
943e3f7e | 659 | fi |
dd891ec4 MT |
660 | |
661 | log DEBUG "Loading kernel module ${module}" | |
662 | modprobe "${module}" | |
943e3f7e | 663 | } |
6b3f9c85 | 664 | |
1c6a4e30 | 665 | binary_exists() { |
6b3f9c85 MT |
666 | local binary=${1} |
667 | ||
668 | if [ -n "$(type -p ${binary})" ]; then | |
669 | return ${EXIT_OK} | |
670 | fi | |
671 | ||
672 | return ${EXIT_ERROR} | |
673 | } | |
d76f5107 | 674 | |
1c6a4e30 | 675 | function_exists() { |
1e6f187e MT |
676 | local function="${1}" |
677 | ||
678 | if [ "$(type -t "${function}")" = "function" ]; then | |
679 | return ${EXIT_TRUE} | |
680 | fi | |
681 | ||
682 | return ${EXIT_FALSE} | |
683 | } | |
684 | ||
1c6a4e30 | 685 | process_kill() { |
d76f5107 MT |
686 | local process=${1} |
687 | ||
688 | if ! isinteger process; then | |
689 | process=$(pidof ${process}) | |
690 | fi | |
691 | ||
692 | local pid | |
693 | local sig | |
694 | for pid in ${process}; do | |
695 | for sig in 15 9; do | |
696 | [ -d "/proc/${pid}" ] || break | |
697 | ||
698 | kill -${sig} ${pid} | |
699 | sleep 1 | |
700 | done | |
701 | done | |
702 | } | |
feb76eaf | 703 | |
1c6a4e30 | 704 | dec() { |
feb76eaf MT |
705 | local hex=${1} |
706 | ||
707 | if [ "${hex:0:2}" != "0x" ]; then | |
708 | hex="0x${hex}" | |
709 | fi | |
710 | ||
711 | printf "%d\n" "${hex}" | |
712 | } | |
3a7fef62 | 713 | |
1c6a4e30 | 714 | chr() { |
5cf0edf9 MT |
715 | local char="${1}" |
716 | ||
717 | [ ${char} -lt 256 ] || return ${EXIT_ERROR} | |
718 | ||
719 | printf "\\$(( ${char} / 64 * 100 + ${char} % 64 / 8 * 10 + ${char} % 8 ))\n" | |
720 | } | |
721 | ||
1c6a4e30 | 722 | ord() { |
5cf0edf9 MT |
723 | LC_CTYPE="C" printf "%d\n" "'${1}" |
724 | } | |
725 | ||
1c6a4e30 | 726 | hex() { |
5cf0edf9 MT |
727 | printf "%X\n" "${1}" |
728 | } | |
729 | ||
1c6a4e30 | 730 | network_is_running() { |
3a7fef62 MT |
731 | # Check, if the network service is running. |
732 | service_is_active network | |
733 | } | |
f80ce052 | 734 | |
1c6a4e30 | 735 | contains_spaces() { |
f80ce052 MT |
736 | local var="$@" |
737 | ||
738 | # Eliminate spaces. | |
739 | local var2=${var// /} | |
740 | ||
741 | if [ ${#var} -ne ${#var2} ]; then | |
742 | return ${EXIT_TRUE} | |
743 | fi | |
744 | ||
745 | return ${EXIT_FALSE} | |
0d645497 MT |
746 | } |
747 | ||
d695b280 MT |
748 | contains_non_ascii_characters() { |
749 | local value="$@" | |
750 | ||
751 | # Strip away all ASCII characters | |
752 | local non_ascii="${value//[[:ascii:]]/}" | |
753 | ||
754 | if isset non_ascii; then | |
755 | return ${EXIT_TRUE} | |
756 | fi | |
757 | ||
758 | return ${EXIT_FALSE} | |
759 | } | |
760 | ||
0d645497 MT |
761 | string_match() { |
762 | local match=${1} | |
763 | local string=${2} | |
764 | ||
765 | [[ ${string} =~ ${match} ]] && return ${EXIT_TRUE} || return ${EXIT_FALSE} | |
f80ce052 | 766 | } |
5cf0edf9 | 767 | |
1c6a4e30 | 768 | string_split() { |
5cf0edf9 MT |
769 | local string="$@" |
770 | ||
771 | local pos=0 | |
772 | while [ ${pos} -lt ${#string} ]; do | |
773 | print "${string:${pos}:1}" | |
774 | pos=$(( ${pos} + 1 )) | |
775 | done | |
776 | ||
777 | return ${EXIT_OK} | |
778 | } | |
779 | ||
1c6a4e30 | 780 | string_reverse() { |
5cf0edf9 MT |
781 | local string="$@" |
782 | ||
783 | local output | |
784 | local pos=0 | |
785 | while [ ${pos} -lt ${#string} ]; do | |
786 | output="${string:${pos}:1}${output}" | |
787 | pos=$(( ${pos} + 1 )) | |
788 | done | |
789 | ||
790 | print "${output}" | |
791 | return ${EXIT_OK} | |
792 | } | |
793 | ||
1c6a4e30 | 794 | dec2bin() { |
5cf0edf9 MT |
795 | local number="${1}" |
796 | ||
797 | local output | |
798 | ||
799 | local i div | |
800 | for i in 7 6 5 4 3 2 1; do | |
801 | div=$(( 2 ** ${i} )) | |
802 | ||
803 | if [ $(( ${number} / ${div} )) -eq 1 ]; then | |
804 | output="${output}1" | |
805 | else | |
806 | output="${output}0" | |
807 | fi | |
808 | number="$(( ${number} % ${div} ))" | |
809 | done | |
810 | ||
811 | if [ $(( ${number} % 2 )) -eq 1 ]; then | |
812 | output="${output}1" | |
813 | else | |
814 | output="${output}0" | |
815 | fi | |
816 | ||
817 | print "${output}" | |
818 | } | |
819 | ||
1c6a4e30 | 820 | bin2dec() { |
5cf0edf9 MT |
821 | local string="${1}" |
822 | local number=0 | |
823 | ||
824 | local pos=0 char | |
825 | while [ ${pos} -lt ${#string} ]; do | |
826 | char="${string:${pos}:1}" | |
827 | pos=$(( ${pos} + 1 )) | |
828 | ||
829 | number=$(( ${number} << 1 )) | |
830 | ||
831 | case "${char}" in | |
832 | 0) ;; | |
833 | 1) | |
834 | number=$(( ${number} + 1 )) | |
835 | ;; | |
836 | *) | |
837 | assert false "Invalid character: ${char}" | |
838 | ;; | |
839 | esac | |
840 | done | |
841 | ||
842 | print "${number}" | |
843 | return ${EXIT_OK} | |
844 | } | |
845 | ||
1c6a4e30 | 846 | char2bin() { |
5cf0edf9 MT |
847 | local dec="$(ord "${1}")" |
848 | ||
849 | dec2bin "${dec}" | |
850 | } | |
851 | ||
1c6a4e30 | 852 | bin2char() { |
5cf0edf9 MT |
853 | local dec="$(bin2dec "$@")" |
854 | ||
855 | chr "${dec}" | |
856 | } | |
857 | ||
1c6a4e30 | 858 | bin2hex() { |
5cf0edf9 MT |
859 | local dec="$(bin2dec "$@")" |
860 | ||
861 | dec2hex "${dec}" | |
862 | } | |
863 | ||
1c6a4e30 | 864 | hex2bin() { |
5cf0edf9 MT |
865 | local dec="$(hex2dec "$@")" |
866 | ||
867 | dec2bin "${dec}" | |
868 | } | |
869 | ||
1c6a4e30 | 870 | hex2dec() { |
5cf0edf9 MT |
871 | local hex="${1}" |
872 | ||
873 | # Prepend 0x if necessary. | |
874 | [ "${hex:0:2}" = "0x" ] || hex="0x${hex}" | |
875 | ||
876 | printf "%d\n" "${hex}" | |
877 | } | |
878 | ||
1c6a4e30 | 879 | dec2hex() { |
5cf0edf9 MT |
880 | printf "%02x\n" "${1}" |
881 | } | |
a95d16fc | 882 | |
10b53c87 | 883 | # This function just copy config files |
a95d16fc | 884 | copy() { |
a95d16fc JS |
885 | assert [ $# -eq 2 ] |
886 | ||
887 | local src=${1} | |
888 | local dst=${2} | |
889 | ||
287c2e60 MT |
890 | # Check if we can read from the source |
891 | if [ ! -r "${src}" ]; then | |
892 | log ERROR "Cannot read ${src}" | |
893 | return ${EXIT_ERROR} | |
894 | fi | |
895 | ||
a95d16fc | 896 | # Check if ${dst} is a directory |
1fade616 | 897 | if [ -d "${dst}" ]; then |
9c802e1d | 898 | log ERROR "${dst} is a directory" |
a95d16fc JS |
899 | return ${EXIT_ERROR} |
900 | fi | |
901 | ||
2012c1b6 MT |
902 | # Create destination directory if it doesn't exist, yet |
903 | if ! make_parent_directory "${dst}"; then | |
904 | return ${EXIT_ERROR} | |
905 | fi | |
906 | ||
a95d16fc JS |
907 | if ! fread "${src}" > "${dst}"; then |
908 | log ERROR "Could not copy data from ${src} to ${dst}" | |
909 | return ${EXIT_ERROR} | |
910 | fi | |
911 | } | |
a8d8d2c5 JS |
912 | |
913 | normalize() { | |
914 | local string="$@" | |
915 | ||
916 | tr -sc [:alnum:] "-" < <(printf "%s" "${string,,}") | |
917 | } | |
4ad5981f MT |
918 | |
919 | get_driver_from_path() { | |
920 | local path="${1}" | |
921 | ||
922 | if file_exists "${path}"; then | |
923 | # Resolve symlink | |
924 | local driver="$(readlink "${path}")" | |
925 | ||
926 | # Print module name | |
927 | basename "${driver}" | |
928 | return ${EXIT_OK} | |
929 | fi | |
930 | ||
931 | return ${EXIT_ERROR} | |
932 | } |