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Commit | Line | Data |
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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 | |
137 | for arg in $@; do | |
138 | local unit | |
139 | ||
140 | case "${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 | ||
e1947a76 | 193 | if [ -e "${file}" ] && [ ! -w "${file}" ]; then |
8d4e0d52 MT |
194 | log ERROR "${file}: No such file" |
195 | return ${EXIT_ERROR} | |
196 | fi | |
197 | ||
198 | print "%s" "$@" >> ${file} 2>/dev/null | |
b79ad79b MT |
199 | } |
200 | ||
e1947a76 MT |
201 | file_exists() { |
202 | local file=${1} | |
203 | ||
204 | [ -e "${file}" ] && return ${EXIT_TRUE} || return ${EXIT_FALSE} | |
205 | } | |
206 | ||
207 | file_is_newer_than() { | |
208 | local file1="${1}" | |
209 | local file2="${2}" | |
210 | ||
211 | local age1=$(file_get_age "${file1}") | |
212 | local age2=$(file_get_age "${file2}") | |
213 | ||
214 | if [ ${age1} -gt ${age2} ]; then | |
215 | return ${EXIT_TRUE} | |
216 | else | |
217 | return ${EXIT_FALSE} | |
218 | fi | |
219 | } | |
220 | ||
221 | file_get_age() { | |
222 | local file="${1}" | |
223 | ||
224 | if [ -e "${file}" ]; then | |
225 | stat --format="%Y" "${file}" | |
226 | return $? | |
227 | fi | |
228 | ||
229 | return ${EXIT_ERROR} | |
230 | } | |
231 | ||
c041b631 MT |
232 | make_parent_dir() { |
233 | local path="${1}" | |
234 | ||
235 | local dirname="$(dirname "${path}")" | |
236 | mkdir -p "${dirname}" | |
237 | } | |
238 | ||
1c6a4e30 | 239 | enabled() { |
1848564d MT |
240 | local param=${1} |
241 | ||
e726ef8d | 242 | list_match "${!param}" yes on true 1 |
1848564d MT |
243 | } |
244 | ||
1c6a4e30 | 245 | mac_generate() { |
fb1416c6 MT |
246 | local b="$(random 12)" |
247 | ||
248 | # Remove multicast bit | |
249 | # and set address is software assigned | |
250 | local first_byte=$(( 0x${b:0:2} & 0xfe )) | |
251 | first_byte=$(( ${first_byte} | 0x02 )) | |
1848564d MT |
252 | |
253 | local output | |
fb1416c6 | 254 | printf -v output "%02x" "${first_byte}" |
790b7ec9 | 255 | |
fb1416c6 | 256 | output="${output}:${b:2:2}:${b:4:2}:${b:6:2}:${b:8:2}:${b:10:2}" |
1848564d MT |
257 | |
258 | # Check if output is valid | |
fb1416c6 | 259 | assert mac_is_valid "${output}" |
1848564d | 260 | |
790b7ec9 | 261 | echo "${output}" |
1848564d MT |
262 | } |
263 | ||
1c6a4e30 | 264 | mac_format() { |
18b43372 | 265 | local mac=${1} |
48bc31eb | 266 | assert isset mac |
18b43372 | 267 | |
48bc31eb MT |
268 | # Remove all colons and make the rest lowercase. |
269 | mac=${mac//:/} | |
270 | mac=${mac,,} | |
18b43372 | 271 | |
48bc31eb | 272 | local output |
18b43372 MT |
273 | if [ "${#mac}" = "12" ]; then |
274 | # Add colons (:) to mac address | |
275 | output=${mac:0:2} | |
276 | local i | |
277 | for i in 2 4 6 8 10; do | |
278 | output="${output}:${mac:${i}:2}" | |
279 | done | |
48bc31eb MT |
280 | else |
281 | output=${mac} | |
18b43372 MT |
282 | fi |
283 | ||
284 | assert mac_is_valid ${output} | |
285 | ||
48bc31eb | 286 | print "${output}" |
18b43372 MT |
287 | } |
288 | ||
1c6a4e30 | 289 | mac_is_valid() { |
1848564d MT |
290 | local mac=${1} |
291 | ||
292 | [[ ${mac} =~ ^([0-9a-f]{2}\:){5}[0-9a-f]{2}$ ]] | |
293 | } | |
294 | ||
1c6a4e30 | 295 | uuid() { |
de543653 | 296 | echo $(</proc/sys/kernel/random/uuid) |
1848564d MT |
297 | } |
298 | ||
a24cff8f JS |
299 | abs() { |
300 | local val=${1} | |
301 | ||
302 | if [ ${val} -lt 0 ]; then | |
303 | (( val *= -1 )) | |
304 | fi | |
305 | ||
306 | echo ${val} | |
307 | } | |
308 | ||
fb1416c6 MT |
309 | rand() { |
310 | local uuid="$(uuid)" | |
311 | echo "${uuid//-/}" | |
312 | } | |
313 | ||
314 | random() { | |
315 | local length="${1:-8}" | |
316 | ||
317 | local random | |
318 | while [ ${#random} -lt ${length} ]; do | |
319 | random="${random}$(rand)" | |
320 | done | |
321 | ||
322 | echo "${random:0:${length}}" | |
323 | } | |
324 | ||
1c6a4e30 | 325 | isset() { |
1848564d MT |
326 | local var=${1} |
327 | ||
328 | [ -n "${!var}" ] | |
329 | } | |
330 | ||
1c6a4e30 | 331 | isoneof() { |
1848564d MT |
332 | local var=${!1} |
333 | shift | |
334 | ||
e726ef8d | 335 | list_match "${var}" "$@" |
1848564d MT |
336 | } |
337 | ||
1c6a4e30 | 338 | isbool() { |
1848564d MT |
339 | local var=${1} |
340 | ||
ec6afbdd | 341 | isoneof ${var} 0 1 no yes on off true false |
1848564d MT |
342 | } |
343 | ||
1c6a4e30 | 344 | isinteger() { |
1848564d MT |
345 | local var=${!1} |
346 | ||
347 | [[ ${var} =~ ^[0-9]+$ ]] | |
348 | } | |
349 | ||
1c6a4e30 | 350 | ismac() { |
1848564d MT |
351 | local mac=${!1} |
352 | ||
353 | mac_is_valid ${mac} | |
354 | } | |
355 | ||
1c6a4e30 | 356 | isipaddress() { |
fef4edaf MT |
357 | local addr=${!1} |
358 | ||
359 | ip_is_valid ${addr} | |
360 | } | |
361 | ||
48a64768 JS |
362 | mtu_is_valid() { |
363 | local proto=${1} | |
364 | local mtu=${2} | |
365 | ||
366 | case ${proto} in | |
367 | ipv4) | |
368 | [ ${mtu} -ge 576 ] && [ ${mtu} -le 9000 ] | |
369 | ;; | |
370 | ipv6) | |
371 | [ ${mtu} -ge 1280 ] && [ ${mtu} -le 9000 ] | |
372 | ;; | |
373 | *) | |
374 | error "${proto} is not a valid proto" | |
375 | return ${EXIT_ERROR} | |
376 | ;; | |
377 | esac | |
378 | } | |
379 | ||
1c6a4e30 | 380 | backtrace() { |
711ffac1 MT |
381 | local start=1 |
382 | ||
383 | echo # Empty line | |
384 | error_log "Backtrace (most recent call in first line):" | |
385 | ||
04608623 | 386 | local i source |
711ffac1 MT |
387 | for i in $(seq ${start} ${#BASH_SOURCE[*]}); do |
388 | [ -z "${FUNCNAME[${i}]}" ] && continue | |
6396ccab MT |
389 | |
390 | # Print called binary with arguments. | |
391 | if [ "${FUNCNAME[${i}]}" == "main" ]; then | |
392 | local args="$(list_reverse ${BASH_ARGV[*]})" | |
393 | printf -v source "%20s" "$0" | |
394 | error_log " ${source} ${args}" | |
395 | continue | |
396 | fi | |
711ffac1 | 397 | |
04608623 MT |
398 | source=${BASH_SOURCE[$(( ${i} + 1 ))]} |
399 | error_log " $(printf "%20s" "'${FUNCNAME[${i}]}'") called from ${source:-<shell>}:${BASH_LINENO[${i}]}" | |
711ffac1 MT |
400 | done |
401 | } | |
402 | ||
1c6a4e30 | 403 | assert() { |
1848564d MT |
404 | local assertion="$@" |
405 | ||
406 | if ! ${assertion}; then | |
4c670d7c | 407 | error_log "Assertion '${assertion}' failed." |
711ffac1 | 408 | backtrace |
cfbe0802 | 409 | exit ${EXIT_ERROR_ASSERT} |
1848564d MT |
410 | fi |
411 | ||
412 | return ${EXIT_OK} | |
413 | } | |
cad8bd85 | 414 | |
b0b2f995 MT |
415 | # This function checks, if the given argument is an assert error |
416 | # exit code. If this is the case, the script will halt immediately. | |
1c6a4e30 | 417 | assert_check_retval() { |
b0b2f995 MT |
418 | local ret=${1} |
419 | ||
420 | if [ ${ret} -eq ${EXIT_ERROR_ASSERT} ]; then | |
421 | exit ${EXIT_ERROR_ASSERT} | |
422 | fi | |
423 | ||
424 | return ${ret} | |
425 | } | |
426 | ||
2bb20bbd SS |
427 | # This function executes the given command and inverses the return code |
428 | not() { | |
429 | local command="$@" | |
430 | ||
431 | ${command} && return ${EXIT_FALSE} || return ${EXIT_TRUE} | |
432 | } | |
433 | ||
1c6a4e30 | 434 | exec_cmd() { |
711ffac1 MT |
435 | local cmd=$@ |
436 | ||
437 | log DEBUG "Running command: ${cmd}" | |
438 | ||
b816e04b | 439 | DEBUG=${DEBUG} \ |
8c63fa13 MT |
440 | LOG_DISABLE_STDOUT="${LOG_DISABLE_STDOUT}" \ |
441 | LOG_FACILITY="${LOG_FACILITY}" \ | |
b816e04b | 442 | ${SHELL} ${cmd} |
711ffac1 MT |
443 | local ret=$? |
444 | ||
445 | #log DEBUG "Returned with code '${ret}'" | |
446 | ||
447 | if [ ${ret} -eq ${EXIT_ERROR_ASSERT} ]; then | |
448 | error_log "Stopping parent process due to assertion error in child process: ${cmd}" | |
449 | exit ${EXIT_ERROR_ASSERT} | |
450 | fi | |
451 | ||
452 | return ${ret} | |
453 | } | |
454 | ||
1c6a4e30 | 455 | cmd() { |
b816e04b MT |
456 | local cmd=$@ |
457 | ||
458 | log DEBUG "Running command: ${cmd}" | |
459 | ||
11285da0 MT |
460 | if ! ${cmd}; then |
461 | local ret=$? | |
b816e04b | 462 | |
11285da0 MT |
463 | log DEBUG "Returned with code '${ret}'" |
464 | return ${ret} | |
465 | fi | |
b816e04b | 466 | |
11285da0 | 467 | return ${EXIT_OK} |
b816e04b MT |
468 | } |
469 | ||
1c6a4e30 | 470 | cmd_quiet() { |
98146c00 | 471 | cmd $@ &>/dev/null |
3efecbb3 MT |
472 | } |
473 | ||
1c6a4e30 | 474 | cmd_exec() { |
f80ce052 MT |
475 | local cmd=$@ |
476 | ||
477 | log DEBUG "Exec'ing command: ${cmd}" | |
478 | ||
479 | exec ${cmd} | |
480 | ||
481 | log ERROR "Could not exec-ute: ${cmd}" | |
482 | exit ${EXIT_ERROR} | |
483 | } | |
484 | ||
1c6a4e30 | 485 | cmd_not_implemented() { |
2181765d MT |
486 | assert false "not implemented" |
487 | } | |
488 | ||
de3cecef MT |
489 | # Runs a command in a clean environment so that no confidential information |
490 | # is leaked to any untrusted commands. | |
491 | cmd_clean_environment() { | |
492 | local cmd=$@ | |
493 | ||
494 | log DEBUG "Running command in a clean environment: ${cmd}" | |
495 | env -i -- ${cmd} | |
496 | local ret=${?} | |
497 | ||
498 | log DEBUG "Returned with code '${ret}'" | |
499 | return ${ret} | |
500 | } | |
501 | ||
f5ee091e MT |
502 | # Executes the given command in background |
503 | cmd_background() { | |
504 | cmd_quiet $@ & | |
505 | } | |
506 | ||
507 | # Prints the PID of the process that was started last | |
508 | cmd_background_get_pid() { | |
509 | print "${!}" | |
510 | } | |
511 | ||
512 | cmd_background_result() { | |
513 | local pids=$@ | |
514 | ||
515 | wait ${pids} | |
516 | } | |
517 | ||
b8026986 | 518 | # Increase security of the read command |
1c6a4e30 | 519 | read() { |
b8026986 MT |
520 | builtin read -r $@ |
521 | } | |
522 | ||
1c6a4e30 | 523 | seq() { |
3efecbb3 MT |
524 | if [ $# -eq 2 ]; then |
525 | eval echo {${1}..${2}} | |
526 | elif [ $# -eq 3 ]; then | |
527 | eval echo {${1}..${3}..${2}} | |
528 | fi | |
529 | } | |
530 | ||
de72bd91 MT |
531 | range() { |
532 | eval echo {0..$(( ${1} - 1 ))} | |
533 | } | |
534 | ||
535 | count() { | |
536 | local i=0 | |
537 | ||
538 | while read; do | |
539 | ((i++)) | |
540 | done | |
541 | ||
542 | echo ${i} | |
543 | } | |
544 | ||
1c6a4e30 | 545 | which() { |
76e6cd51 MT |
546 | type -P $@ |
547 | } | |
548 | ||
fe52c5e0 | 549 | # Prints the number of seconds since epoch. |
1c6a4e30 | 550 | timestamp() { |
fe52c5e0 MT |
551 | date -u "+%s" |
552 | } | |
553 | ||
1c6a4e30 | 554 | beautify_time() { |
d82cf370 MT |
555 | local value=${1} |
556 | ||
557 | local unit | |
558 | local limit | |
559 | for unit in s m h d w; do | |
560 | case "${unit}" in | |
561 | s|m|h) | |
562 | limit=60 | |
563 | ;; | |
564 | d) | |
565 | limit=24 | |
566 | ;; | |
567 | w) | |
568 | limit=7 | |
569 | ;; | |
570 | esac | |
571 | ||
572 | [ ${value} -lt ${limit} ] && break | |
573 | ||
574 | value=$(( ${value} / ${limit} )) | |
575 | done | |
576 | ||
577 | echo "${value}${unit}" | |
578 | } | |
711ffac1 | 579 | |
1c6a4e30 | 580 | beautify_bytes() { |
711ffac1 MT |
581 | local value=${1} |
582 | ||
583 | local unit | |
584 | local limit=1024 | |
585 | for unit in B k M G T; do | |
586 | [ ${value} -lt ${limit} ] && break | |
587 | value=$(( ${value} / ${limit} )) | |
588 | done | |
589 | ||
590 | echo "${value}${unit}" | |
591 | } | |
943e3f7e | 592 | |
1c6a4e30 | 593 | module_load() { |
943e3f7e MT |
594 | local module=${1} |
595 | ||
596 | if ! grep -q "^${module}" /proc/modules; then | |
597 | log DEBUG "Loading module '${module}'." | |
598 | modprobe ${module} | |
599 | fi | |
600 | } | |
6b3f9c85 | 601 | |
1c6a4e30 | 602 | binary_exists() { |
6b3f9c85 MT |
603 | local binary=${1} |
604 | ||
605 | if [ -n "$(type -p ${binary})" ]; then | |
606 | return ${EXIT_OK} | |
607 | fi | |
608 | ||
609 | return ${EXIT_ERROR} | |
610 | } | |
d76f5107 | 611 | |
1c6a4e30 | 612 | function_exists() { |
1e6f187e MT |
613 | local function="${1}" |
614 | ||
615 | if [ "$(type -t "${function}")" = "function" ]; then | |
616 | return ${EXIT_TRUE} | |
617 | fi | |
618 | ||
619 | return ${EXIT_FALSE} | |
620 | } | |
621 | ||
1c6a4e30 | 622 | process_kill() { |
d76f5107 MT |
623 | local process=${1} |
624 | ||
625 | if ! isinteger process; then | |
626 | process=$(pidof ${process}) | |
627 | fi | |
628 | ||
629 | local pid | |
630 | local sig | |
631 | for pid in ${process}; do | |
632 | for sig in 15 9; do | |
633 | [ -d "/proc/${pid}" ] || break | |
634 | ||
635 | kill -${sig} ${pid} | |
636 | sleep 1 | |
637 | done | |
638 | done | |
639 | } | |
feb76eaf | 640 | |
1c6a4e30 | 641 | dec() { |
feb76eaf MT |
642 | local hex=${1} |
643 | ||
644 | if [ "${hex:0:2}" != "0x" ]; then | |
645 | hex="0x${hex}" | |
646 | fi | |
647 | ||
648 | printf "%d\n" "${hex}" | |
649 | } | |
3a7fef62 | 650 | |
1c6a4e30 | 651 | chr() { |
5cf0edf9 MT |
652 | local char="${1}" |
653 | ||
654 | [ ${char} -lt 256 ] || return ${EXIT_ERROR} | |
655 | ||
656 | printf "\\$(( ${char} / 64 * 100 + ${char} % 64 / 8 * 10 + ${char} % 8 ))\n" | |
657 | } | |
658 | ||
1c6a4e30 | 659 | ord() { |
5cf0edf9 MT |
660 | LC_CTYPE="C" printf "%d\n" "'${1}" |
661 | } | |
662 | ||
1c6a4e30 | 663 | hex() { |
5cf0edf9 MT |
664 | printf "%X\n" "${1}" |
665 | } | |
666 | ||
1c6a4e30 | 667 | network_is_running() { |
3a7fef62 MT |
668 | # Check, if the network service is running. |
669 | service_is_active network | |
670 | } | |
f80ce052 | 671 | |
1c6a4e30 | 672 | contains_spaces() { |
f80ce052 MT |
673 | local var="$@" |
674 | ||
675 | # Eliminate spaces. | |
676 | local var2=${var// /} | |
677 | ||
678 | if [ ${#var} -ne ${#var2} ]; then | |
679 | return ${EXIT_TRUE} | |
680 | fi | |
681 | ||
682 | return ${EXIT_FALSE} | |
0d645497 MT |
683 | } |
684 | ||
685 | string_match() { | |
686 | local match=${1} | |
687 | local string=${2} | |
688 | ||
689 | [[ ${string} =~ ${match} ]] && return ${EXIT_TRUE} || return ${EXIT_FALSE} | |
f80ce052 | 690 | } |
5cf0edf9 | 691 | |
1c6a4e30 | 692 | string_split() { |
5cf0edf9 MT |
693 | local string="$@" |
694 | ||
695 | local pos=0 | |
696 | while [ ${pos} -lt ${#string} ]; do | |
697 | print "${string:${pos}:1}" | |
698 | pos=$(( ${pos} + 1 )) | |
699 | done | |
700 | ||
701 | return ${EXIT_OK} | |
702 | } | |
703 | ||
1c6a4e30 | 704 | string_reverse() { |
5cf0edf9 MT |
705 | local string="$@" |
706 | ||
707 | local output | |
708 | local pos=0 | |
709 | while [ ${pos} -lt ${#string} ]; do | |
710 | output="${string:${pos}:1}${output}" | |
711 | pos=$(( ${pos} + 1 )) | |
712 | done | |
713 | ||
714 | print "${output}" | |
715 | return ${EXIT_OK} | |
716 | } | |
717 | ||
1c6a4e30 | 718 | dec2bin() { |
5cf0edf9 MT |
719 | local number="${1}" |
720 | ||
721 | local output | |
722 | ||
723 | local i div | |
724 | for i in 7 6 5 4 3 2 1; do | |
725 | div=$(( 2 ** ${i} )) | |
726 | ||
727 | if [ $(( ${number} / ${div} )) -eq 1 ]; then | |
728 | output="${output}1" | |
729 | else | |
730 | output="${output}0" | |
731 | fi | |
732 | number="$(( ${number} % ${div} ))" | |
733 | done | |
734 | ||
735 | if [ $(( ${number} % 2 )) -eq 1 ]; then | |
736 | output="${output}1" | |
737 | else | |
738 | output="${output}0" | |
739 | fi | |
740 | ||
741 | print "${output}" | |
742 | } | |
743 | ||
1c6a4e30 | 744 | bin2dec() { |
5cf0edf9 MT |
745 | local string="${1}" |
746 | local number=0 | |
747 | ||
748 | local pos=0 char | |
749 | while [ ${pos} -lt ${#string} ]; do | |
750 | char="${string:${pos}:1}" | |
751 | pos=$(( ${pos} + 1 )) | |
752 | ||
753 | number=$(( ${number} << 1 )) | |
754 | ||
755 | case "${char}" in | |
756 | 0) ;; | |
757 | 1) | |
758 | number=$(( ${number} + 1 )) | |
759 | ;; | |
760 | *) | |
761 | assert false "Invalid character: ${char}" | |
762 | ;; | |
763 | esac | |
764 | done | |
765 | ||
766 | print "${number}" | |
767 | return ${EXIT_OK} | |
768 | } | |
769 | ||
1c6a4e30 | 770 | char2bin() { |
5cf0edf9 MT |
771 | local dec="$(ord "${1}")" |
772 | ||
773 | dec2bin "${dec}" | |
774 | } | |
775 | ||
1c6a4e30 | 776 | bin2char() { |
5cf0edf9 MT |
777 | local dec="$(bin2dec "$@")" |
778 | ||
779 | chr "${dec}" | |
780 | } | |
781 | ||
1c6a4e30 | 782 | bin2hex() { |
5cf0edf9 MT |
783 | local dec="$(bin2dec "$@")" |
784 | ||
785 | dec2hex "${dec}" | |
786 | } | |
787 | ||
1c6a4e30 | 788 | hex2bin() { |
5cf0edf9 MT |
789 | local dec="$(hex2dec "$@")" |
790 | ||
791 | dec2bin "${dec}" | |
792 | } | |
793 | ||
1c6a4e30 | 794 | hex2dec() { |
5cf0edf9 MT |
795 | local hex="${1}" |
796 | ||
797 | # Prepend 0x if necessary. | |
798 | [ "${hex:0:2}" = "0x" ] || hex="0x${hex}" | |
799 | ||
800 | printf "%d\n" "${hex}" | |
801 | } | |
802 | ||
1c6a4e30 | 803 | dec2hex() { |
5cf0edf9 MT |
804 | printf "%02x\n" "${1}" |
805 | } | |
a95d16fc | 806 | |
10b53c87 | 807 | # This function just copy config files |
a95d16fc | 808 | copy() { |
a95d16fc JS |
809 | assert [ $# -eq 2 ] |
810 | ||
811 | local src=${1} | |
812 | local dst=${2} | |
813 | ||
287c2e60 MT |
814 | # Check if we can read from the source |
815 | if [ ! -r "${src}" ]; then | |
816 | log ERROR "Cannot read ${src}" | |
817 | return ${EXIT_ERROR} | |
818 | fi | |
819 | ||
a95d16fc | 820 | # Check if ${dst} is a directory |
1fade616 | 821 | if [ -d "${dst}" ]; then |
9c802e1d | 822 | log ERROR "${dst} is a directory" |
a95d16fc JS |
823 | return ${EXIT_ERROR} |
824 | fi | |
825 | ||
826 | if ! fread "${src}" > "${dst}"; then | |
827 | log ERROR "Could not copy data from ${src} to ${dst}" | |
828 | return ${EXIT_ERROR} | |
829 | fi | |
830 | } |