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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 ${ret} | |
131 | } | |
132 | ||
b383499d MT |
133 | parse_time() { |
134 | local ret=0 | |
135 | ||
136 | local arg | |
2212045f | 137 | for arg in "$@"; 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 ${EXIT_ERROR} | |
249 | } | |
250 | ||
04c27fe9 MT |
251 | make_directory() { |
252 | local path="${1}" | |
253 | ||
254 | mkdir -p "${path}" | |
255 | } | |
256 | ||
46954be3 | 257 | make_parent_directory() { |
c041b631 MT |
258 | local path="${1}" |
259 | ||
04c27fe9 | 260 | make_directory "$(dirname "${path}")" |
c041b631 MT |
261 | } |
262 | ||
1c6a4e30 | 263 | enabled() { |
1848564d MT |
264 | local param=${1} |
265 | ||
e726ef8d | 266 | list_match "${!param}" yes on true 1 |
1848564d MT |
267 | } |
268 | ||
1c6a4e30 | 269 | mac_generate() { |
fb1416c6 MT |
270 | local b="$(random 12)" |
271 | ||
272 | # Remove multicast bit | |
273 | # and set address is software assigned | |
274 | local first_byte=$(( 0x${b:0:2} & 0xfe )) | |
275 | first_byte=$(( ${first_byte} | 0x02 )) | |
1848564d MT |
276 | |
277 | local output | |
fb1416c6 | 278 | printf -v output "%02x" "${first_byte}" |
790b7ec9 | 279 | |
fb1416c6 | 280 | output="${output}:${b:2:2}:${b:4:2}:${b:6:2}:${b:8:2}:${b:10:2}" |
1848564d MT |
281 | |
282 | # Check if output is valid | |
fb1416c6 | 283 | assert mac_is_valid "${output}" |
1848564d | 284 | |
790b7ec9 | 285 | echo "${output}" |
1848564d MT |
286 | } |
287 | ||
1c6a4e30 | 288 | mac_format() { |
18b43372 | 289 | local mac=${1} |
48bc31eb | 290 | assert isset mac |
18b43372 | 291 | |
48bc31eb MT |
292 | # Remove all colons and make the rest lowercase. |
293 | mac=${mac//:/} | |
294 | mac=${mac,,} | |
18b43372 | 295 | |
48bc31eb | 296 | local output |
18b43372 MT |
297 | if [ "${#mac}" = "12" ]; then |
298 | # Add colons (:) to mac address | |
299 | output=${mac:0:2} | |
300 | local i | |
301 | for i in 2 4 6 8 10; do | |
302 | output="${output}:${mac:${i}:2}" | |
303 | done | |
48bc31eb MT |
304 | else |
305 | output=${mac} | |
18b43372 MT |
306 | fi |
307 | ||
308 | assert mac_is_valid ${output} | |
309 | ||
48bc31eb | 310 | print "${output}" |
18b43372 MT |
311 | } |
312 | ||
1c6a4e30 | 313 | mac_is_valid() { |
1848564d MT |
314 | local mac=${1} |
315 | ||
316 | [[ ${mac} =~ ^([0-9a-f]{2}\:){5}[0-9a-f]{2}$ ]] | |
317 | } | |
318 | ||
1c6a4e30 | 319 | uuid() { |
de543653 | 320 | echo $(</proc/sys/kernel/random/uuid) |
1848564d MT |
321 | } |
322 | ||
a24cff8f JS |
323 | abs() { |
324 | local val=${1} | |
325 | ||
326 | if [ ${val} -lt 0 ]; then | |
327 | (( val *= -1 )) | |
328 | fi | |
329 | ||
330 | echo ${val} | |
331 | } | |
332 | ||
fb1416c6 MT |
333 | rand() { |
334 | local uuid="$(uuid)" | |
335 | echo "${uuid//-/}" | |
336 | } | |
337 | ||
338 | random() { | |
339 | local length="${1:-8}" | |
340 | ||
341 | local random | |
342 | while [ ${#random} -lt ${length} ]; do | |
343 | random="${random}$(rand)" | |
344 | done | |
345 | ||
346 | echo "${random:0:${length}}" | |
347 | } | |
348 | ||
1c6a4e30 | 349 | isset() { |
1848564d MT |
350 | local var=${1} |
351 | ||
352 | [ -n "${!var}" ] | |
353 | } | |
354 | ||
1c6a4e30 | 355 | isoneof() { |
1848564d MT |
356 | local var=${!1} |
357 | shift | |
358 | ||
e726ef8d | 359 | list_match "${var}" "$@" |
1848564d MT |
360 | } |
361 | ||
1c6a4e30 | 362 | isbool() { |
1848564d MT |
363 | local var=${1} |
364 | ||
ec6afbdd | 365 | isoneof ${var} 0 1 no yes on off true false |
1848564d MT |
366 | } |
367 | ||
1c6a4e30 | 368 | isinteger() { |
1848564d MT |
369 | local var=${!1} |
370 | ||
371 | [[ ${var} =~ ^[0-9]+$ ]] | |
372 | } | |
373 | ||
1c6a4e30 | 374 | ismac() { |
1848564d MT |
375 | local mac=${!1} |
376 | ||
377 | mac_is_valid ${mac} | |
378 | } | |
379 | ||
1c6a4e30 | 380 | isipaddress() { |
fef4edaf MT |
381 | local addr=${!1} |
382 | ||
383 | ip_is_valid ${addr} | |
384 | } | |
385 | ||
48a64768 JS |
386 | mtu_is_valid() { |
387 | local proto=${1} | |
388 | local mtu=${2} | |
389 | ||
390 | case ${proto} in | |
391 | ipv4) | |
392 | [ ${mtu} -ge 576 ] && [ ${mtu} -le 9000 ] | |
393 | ;; | |
394 | ipv6) | |
395 | [ ${mtu} -ge 1280 ] && [ ${mtu} -le 9000 ] | |
396 | ;; | |
397 | *) | |
398 | error "${proto} is not a valid proto" | |
399 | return ${EXIT_ERROR} | |
400 | ;; | |
401 | esac | |
402 | } | |
403 | ||
1c6a4e30 | 404 | backtrace() { |
711ffac1 MT |
405 | local start=1 |
406 | ||
407 | echo # Empty line | |
408 | error_log "Backtrace (most recent call in first line):" | |
409 | ||
04608623 | 410 | local i source |
711ffac1 MT |
411 | for i in $(seq ${start} ${#BASH_SOURCE[*]}); do |
412 | [ -z "${FUNCNAME[${i}]}" ] && continue | |
6396ccab MT |
413 | |
414 | # Print called binary with arguments. | |
415 | if [ "${FUNCNAME[${i}]}" == "main" ]; then | |
416 | local args="$(list_reverse ${BASH_ARGV[*]})" | |
417 | printf -v source "%20s" "$0" | |
418 | error_log " ${source} ${args}" | |
419 | continue | |
420 | fi | |
711ffac1 | 421 | |
04608623 MT |
422 | source=${BASH_SOURCE[$(( ${i} + 1 ))]} |
423 | error_log " $(printf "%20s" "'${FUNCNAME[${i}]}'") called from ${source:-<shell>}:${BASH_LINENO[${i}]}" | |
711ffac1 MT |
424 | done |
425 | } | |
426 | ||
1c6a4e30 | 427 | assert() { |
1848564d MT |
428 | local assertion="$@" |
429 | ||
430 | if ! ${assertion}; then | |
4c670d7c | 431 | error_log "Assertion '${assertion}' failed." |
711ffac1 | 432 | backtrace |
cfbe0802 | 433 | exit ${EXIT_ERROR_ASSERT} |
1848564d MT |
434 | fi |
435 | ||
436 | return ${EXIT_OK} | |
437 | } | |
cad8bd85 | 438 | |
b0b2f995 MT |
439 | # This function checks, if the given argument is an assert error |
440 | # exit code. If this is the case, the script will halt immediately. | |
1c6a4e30 | 441 | assert_check_retval() { |
b0b2f995 MT |
442 | local ret=${1} |
443 | ||
444 | if [ ${ret} -eq ${EXIT_ERROR_ASSERT} ]; then | |
445 | exit ${EXIT_ERROR_ASSERT} | |
446 | fi | |
447 | ||
448 | return ${ret} | |
449 | } | |
450 | ||
2bb20bbd SS |
451 | # This function executes the given command and inverses the return code |
452 | not() { | |
453 | local command="$@" | |
454 | ||
455 | ${command} && return ${EXIT_FALSE} || return ${EXIT_TRUE} | |
456 | } | |
457 | ||
1c6a4e30 | 458 | exec_cmd() { |
711ffac1 MT |
459 | local cmd=$@ |
460 | ||
461 | log DEBUG "Running command: ${cmd}" | |
462 | ||
b816e04b | 463 | DEBUG=${DEBUG} \ |
8c63fa13 MT |
464 | LOG_DISABLE_STDOUT="${LOG_DISABLE_STDOUT}" \ |
465 | LOG_FACILITY="${LOG_FACILITY}" \ | |
b816e04b | 466 | ${SHELL} ${cmd} |
711ffac1 MT |
467 | local ret=$? |
468 | ||
469 | #log DEBUG "Returned with code '${ret}'" | |
470 | ||
471 | if [ ${ret} -eq ${EXIT_ERROR_ASSERT} ]; then | |
472 | error_log "Stopping parent process due to assertion error in child process: ${cmd}" | |
473 | exit ${EXIT_ERROR_ASSERT} | |
474 | fi | |
475 | ||
476 | return ${ret} | |
477 | } | |
478 | ||
1c6a4e30 | 479 | cmd() { |
b816e04b MT |
480 | local cmd=$@ |
481 | ||
482 | log DEBUG "Running command: ${cmd}" | |
483 | ||
4b75fc83 MT |
484 | env -i -- \ |
485 | HOME="${HOME}" \ | |
486 | PATH="${PATH}" \ | |
487 | TERM="${TERM}" \ | |
488 | ${cmd} | |
489 | local ret=$? | |
b816e04b | 490 | |
4b75fc83 MT |
491 | case "${ret}" in |
492 | ${EXIT_OK}) | |
493 | return ${EXIT_OK} | |
494 | ;; | |
495 | *) | |
496 | log DEBUG "Returned with code '${ret}'" | |
497 | return ${ret} | |
498 | ;; | |
499 | esac | |
b816e04b MT |
500 | } |
501 | ||
1c6a4e30 | 502 | cmd_quiet() { |
2212045f | 503 | cmd "$@" &>/dev/null |
3efecbb3 MT |
504 | } |
505 | ||
1c6a4e30 | 506 | cmd_exec() { |
f80ce052 MT |
507 | local cmd=$@ |
508 | ||
509 | log DEBUG "Exec'ing command: ${cmd}" | |
510 | ||
511 | exec ${cmd} | |
512 | ||
513 | log ERROR "Could not exec-ute: ${cmd}" | |
514 | exit ${EXIT_ERROR} | |
515 | } | |
516 | ||
1c6a4e30 | 517 | cmd_not_implemented() { |
2181765d MT |
518 | assert false "not implemented" |
519 | } | |
520 | ||
f5ee091e MT |
521 | # Executes the given command in background |
522 | cmd_background() { | |
2212045f | 523 | cmd_quiet "$@" & |
f5ee091e MT |
524 | } |
525 | ||
526 | # Prints the PID of the process that was started last | |
527 | cmd_background_get_pid() { | |
528 | print "${!}" | |
529 | } | |
530 | ||
531 | cmd_background_result() { | |
532 | local pids=$@ | |
533 | ||
534 | wait ${pids} | |
535 | } | |
536 | ||
b8026986 | 537 | # Increase security of the read command |
1c6a4e30 | 538 | read() { |
2212045f | 539 | builtin read -r "$@" |
b8026986 MT |
540 | } |
541 | ||
1c6a4e30 | 542 | seq() { |
3efecbb3 MT |
543 | if [ $# -eq 2 ]; then |
544 | eval echo {${1}..${2}} | |
545 | elif [ $# -eq 3 ]; then | |
546 | eval echo {${1}..${3}..${2}} | |
547 | fi | |
548 | } | |
549 | ||
de72bd91 MT |
550 | range() { |
551 | eval echo {0..$(( ${1} - 1 ))} | |
552 | } | |
553 | ||
554 | count() { | |
555 | local i=0 | |
556 | ||
557 | while read; do | |
558 | ((i++)) | |
559 | done | |
560 | ||
561 | echo ${i} | |
562 | } | |
563 | ||
1c6a4e30 | 564 | which() { |
2212045f | 565 | type -P "$@" |
76e6cd51 MT |
566 | } |
567 | ||
fe52c5e0 | 568 | # Prints the number of seconds since epoch. |
1c6a4e30 | 569 | timestamp() { |
fe52c5e0 MT |
570 | date -u "+%s" |
571 | } | |
572 | ||
1c6a4e30 | 573 | beautify_time() { |
d82cf370 MT |
574 | local value=${1} |
575 | ||
576 | local unit | |
577 | local limit | |
578 | for unit in s m h d w; do | |
579 | case "${unit}" in | |
580 | s|m|h) | |
581 | limit=60 | |
582 | ;; | |
583 | d) | |
584 | limit=24 | |
585 | ;; | |
586 | w) | |
587 | limit=7 | |
588 | ;; | |
589 | esac | |
590 | ||
591 | [ ${value} -lt ${limit} ] && break | |
592 | ||
593 | value=$(( ${value} / ${limit} )) | |
594 | done | |
595 | ||
596 | echo "${value}${unit}" | |
597 | } | |
711ffac1 | 598 | |
1c6a4e30 | 599 | beautify_bytes() { |
711ffac1 MT |
600 | local value=${1} |
601 | ||
602 | local unit | |
603 | local limit=1024 | |
604 | for unit in B k M G T; do | |
605 | [ ${value} -lt ${limit} ] && break | |
606 | value=$(( ${value} / ${limit} )) | |
607 | done | |
608 | ||
609 | echo "${value}${unit}" | |
610 | } | |
943e3f7e | 611 | |
1c6a4e30 | 612 | module_load() { |
943e3f7e MT |
613 | local module=${1} |
614 | ||
dd891ec4 MT |
615 | # Do nothing if the module is already loaded |
616 | if [ -d "/sys/module/${module//-/_}" ]; then | |
617 | return ${EXIT_OK} | |
943e3f7e | 618 | fi |
dd891ec4 MT |
619 | |
620 | log DEBUG "Loading kernel module ${module}" | |
621 | modprobe "${module}" | |
943e3f7e | 622 | } |
6b3f9c85 | 623 | |
1c6a4e30 | 624 | binary_exists() { |
6b3f9c85 MT |
625 | local binary=${1} |
626 | ||
627 | if [ -n "$(type -p ${binary})" ]; then | |
628 | return ${EXIT_OK} | |
629 | fi | |
630 | ||
631 | return ${EXIT_ERROR} | |
632 | } | |
d76f5107 | 633 | |
1c6a4e30 | 634 | function_exists() { |
1e6f187e MT |
635 | local function="${1}" |
636 | ||
637 | if [ "$(type -t "${function}")" = "function" ]; then | |
638 | return ${EXIT_TRUE} | |
639 | fi | |
640 | ||
641 | return ${EXIT_FALSE} | |
642 | } | |
643 | ||
1c6a4e30 | 644 | process_kill() { |
d76f5107 MT |
645 | local process=${1} |
646 | ||
647 | if ! isinteger process; then | |
648 | process=$(pidof ${process}) | |
649 | fi | |
650 | ||
651 | local pid | |
652 | local sig | |
653 | for pid in ${process}; do | |
654 | for sig in 15 9; do | |
655 | [ -d "/proc/${pid}" ] || break | |
656 | ||
657 | kill -${sig} ${pid} | |
658 | sleep 1 | |
659 | done | |
660 | done | |
661 | } | |
feb76eaf | 662 | |
1c6a4e30 | 663 | dec() { |
feb76eaf MT |
664 | local hex=${1} |
665 | ||
666 | if [ "${hex:0:2}" != "0x" ]; then | |
667 | hex="0x${hex}" | |
668 | fi | |
669 | ||
670 | printf "%d\n" "${hex}" | |
671 | } | |
3a7fef62 | 672 | |
1c6a4e30 | 673 | chr() { |
5cf0edf9 MT |
674 | local char="${1}" |
675 | ||
676 | [ ${char} -lt 256 ] || return ${EXIT_ERROR} | |
677 | ||
678 | printf "\\$(( ${char} / 64 * 100 + ${char} % 64 / 8 * 10 + ${char} % 8 ))\n" | |
679 | } | |
680 | ||
1c6a4e30 | 681 | ord() { |
5cf0edf9 MT |
682 | LC_CTYPE="C" printf "%d\n" "'${1}" |
683 | } | |
684 | ||
1c6a4e30 | 685 | hex() { |
5cf0edf9 MT |
686 | printf "%X\n" "${1}" |
687 | } | |
688 | ||
1c6a4e30 | 689 | network_is_running() { |
3a7fef62 MT |
690 | # Check, if the network service is running. |
691 | service_is_active network | |
692 | } | |
f80ce052 | 693 | |
1c6a4e30 | 694 | contains_spaces() { |
f80ce052 MT |
695 | local var="$@" |
696 | ||
697 | # Eliminate spaces. | |
698 | local var2=${var// /} | |
699 | ||
700 | if [ ${#var} -ne ${#var2} ]; then | |
701 | return ${EXIT_TRUE} | |
702 | fi | |
703 | ||
704 | return ${EXIT_FALSE} | |
0d645497 MT |
705 | } |
706 | ||
707 | string_match() { | |
708 | local match=${1} | |
709 | local string=${2} | |
710 | ||
711 | [[ ${string} =~ ${match} ]] && return ${EXIT_TRUE} || return ${EXIT_FALSE} | |
f80ce052 | 712 | } |
5cf0edf9 | 713 | |
1c6a4e30 | 714 | string_split() { |
5cf0edf9 MT |
715 | local string="$@" |
716 | ||
717 | local pos=0 | |
718 | while [ ${pos} -lt ${#string} ]; do | |
719 | print "${string:${pos}:1}" | |
720 | pos=$(( ${pos} + 1 )) | |
721 | done | |
722 | ||
723 | return ${EXIT_OK} | |
724 | } | |
725 | ||
1c6a4e30 | 726 | string_reverse() { |
5cf0edf9 MT |
727 | local string="$@" |
728 | ||
729 | local output | |
730 | local pos=0 | |
731 | while [ ${pos} -lt ${#string} ]; do | |
732 | output="${string:${pos}:1}${output}" | |
733 | pos=$(( ${pos} + 1 )) | |
734 | done | |
735 | ||
736 | print "${output}" | |
737 | return ${EXIT_OK} | |
738 | } | |
739 | ||
1c6a4e30 | 740 | dec2bin() { |
5cf0edf9 MT |
741 | local number="${1}" |
742 | ||
743 | local output | |
744 | ||
745 | local i div | |
746 | for i in 7 6 5 4 3 2 1; do | |
747 | div=$(( 2 ** ${i} )) | |
748 | ||
749 | if [ $(( ${number} / ${div} )) -eq 1 ]; then | |
750 | output="${output}1" | |
751 | else | |
752 | output="${output}0" | |
753 | fi | |
754 | number="$(( ${number} % ${div} ))" | |
755 | done | |
756 | ||
757 | if [ $(( ${number} % 2 )) -eq 1 ]; then | |
758 | output="${output}1" | |
759 | else | |
760 | output="${output}0" | |
761 | fi | |
762 | ||
763 | print "${output}" | |
764 | } | |
765 | ||
1c6a4e30 | 766 | bin2dec() { |
5cf0edf9 MT |
767 | local string="${1}" |
768 | local number=0 | |
769 | ||
770 | local pos=0 char | |
771 | while [ ${pos} -lt ${#string} ]; do | |
772 | char="${string:${pos}:1}" | |
773 | pos=$(( ${pos} + 1 )) | |
774 | ||
775 | number=$(( ${number} << 1 )) | |
776 | ||
777 | case "${char}" in | |
778 | 0) ;; | |
779 | 1) | |
780 | number=$(( ${number} + 1 )) | |
781 | ;; | |
782 | *) | |
783 | assert false "Invalid character: ${char}" | |
784 | ;; | |
785 | esac | |
786 | done | |
787 | ||
788 | print "${number}" | |
789 | return ${EXIT_OK} | |
790 | } | |
791 | ||
1c6a4e30 | 792 | char2bin() { |
5cf0edf9 MT |
793 | local dec="$(ord "${1}")" |
794 | ||
795 | dec2bin "${dec}" | |
796 | } | |
797 | ||
1c6a4e30 | 798 | bin2char() { |
5cf0edf9 MT |
799 | local dec="$(bin2dec "$@")" |
800 | ||
801 | chr "${dec}" | |
802 | } | |
803 | ||
1c6a4e30 | 804 | bin2hex() { |
5cf0edf9 MT |
805 | local dec="$(bin2dec "$@")" |
806 | ||
807 | dec2hex "${dec}" | |
808 | } | |
809 | ||
1c6a4e30 | 810 | hex2bin() { |
5cf0edf9 MT |
811 | local dec="$(hex2dec "$@")" |
812 | ||
813 | dec2bin "${dec}" | |
814 | } | |
815 | ||
1c6a4e30 | 816 | hex2dec() { |
5cf0edf9 MT |
817 | local hex="${1}" |
818 | ||
819 | # Prepend 0x if necessary. | |
820 | [ "${hex:0:2}" = "0x" ] || hex="0x${hex}" | |
821 | ||
822 | printf "%d\n" "${hex}" | |
823 | } | |
824 | ||
1c6a4e30 | 825 | dec2hex() { |
5cf0edf9 MT |
826 | printf "%02x\n" "${1}" |
827 | } | |
a95d16fc | 828 | |
10b53c87 | 829 | # This function just copy config files |
a95d16fc | 830 | copy() { |
a95d16fc JS |
831 | assert [ $# -eq 2 ] |
832 | ||
833 | local src=${1} | |
834 | local dst=${2} | |
835 | ||
287c2e60 MT |
836 | # Check if we can read from the source |
837 | if [ ! -r "${src}" ]; then | |
838 | log ERROR "Cannot read ${src}" | |
839 | return ${EXIT_ERROR} | |
840 | fi | |
841 | ||
a95d16fc | 842 | # Check if ${dst} is a directory |
1fade616 | 843 | if [ -d "${dst}" ]; then |
9c802e1d | 844 | log ERROR "${dst} is a directory" |
a95d16fc JS |
845 | return ${EXIT_ERROR} |
846 | fi | |
847 | ||
848 | if ! fread "${src}" > "${dst}"; then | |
849 | log ERROR "Could not copy data from ${src} to ${dst}" | |
850 | return ${EXIT_ERROR} | |
851 | fi | |
852 | } | |
a8d8d2c5 JS |
853 | |
854 | normalize() { | |
855 | local string="$@" | |
856 | ||
857 | tr -sc [:alnum:] "-" < <(printf "%s" "${string,,}") | |
858 | } |