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Commit | Line | Data |
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e143e9d8 DM |
1 | package PVE::Tools; |
2 | ||
3 | use strict; | |
4 | use POSIX; | |
5 | use IO::Socket::INET; | |
6 | use IO::Select; | |
7 | use File::Basename; | |
8 | use File::Path qw(make_path); | |
9 | use IO::File; | |
10 | use IPC::Open3; | |
11 | use Fcntl qw(:DEFAULT :flock); | |
12 | use base 'Exporter'; | |
13 | use URI::Escape; | |
14 | use Encode; | |
a413a515 | 15 | use Digest::SHA1; |
e143e9d8 DM |
16 | |
17 | our @EXPORT_OK = qw( | |
18 | lock_file | |
19 | run_command | |
20 | file_set_contents | |
21 | file_get_contents | |
22 | file_read_firstline | |
23 | split_list | |
24 | template_replace | |
25 | safe_print | |
26 | trim | |
27 | extract_param | |
28 | ); | |
29 | ||
30 | my $pvelogdir = "/var/log/pve"; | |
31 | my $pvetaskdir = "$pvelogdir/tasks"; | |
32 | ||
33 | mkdir $pvelogdir; | |
34 | mkdir $pvetaskdir; | |
35 | ||
36 | # flock: we use one file handle per process, so lock file | |
37 | # can be called multiple times and succeeds for the same process. | |
38 | ||
39 | my $lock_handles = {}; | |
40 | ||
41 | sub lock_file { | |
42 | my ($filename, $timeout, $code, @param) = @_; | |
43 | ||
44 | my $res; | |
45 | ||
46 | $timeout = 10 if !$timeout; | |
47 | ||
48 | eval { | |
49 | ||
50 | local $SIG{ALRM} = sub { die "got timeout (can't lock '$filename')\n"; }; | |
51 | ||
52 | alarm ($timeout); | |
53 | ||
54 | if (!$lock_handles->{$$}->{$filename}) { | |
55 | $lock_handles->{$$}->{$filename} = new IO::File (">>$filename") || | |
56 | die "can't open lock file '$filename' - $!\n"; | |
57 | } | |
58 | ||
59 | if (!flock ($lock_handles->{$$}->{$filename}, LOCK_EX|LOCK_NB)) { | |
60 | print STDERR "trying to aquire lock..."; | |
61 | if (!flock ($lock_handles->{$$}->{$filename}, LOCK_EX)) { | |
62 | print STDERR " failed\n"; | |
63 | die "can't aquire lock for '$filename' - $!\n"; | |
64 | } | |
65 | print STDERR " OK\n"; | |
66 | } | |
67 | alarm (0); | |
68 | ||
69 | $res = &$code(@param); | |
70 | }; | |
71 | ||
72 | my $err = $@; | |
73 | ||
74 | alarm (0); | |
75 | ||
76 | if ($lock_handles->{$$}->{$filename}) { | |
77 | my $fh = $lock_handles->{$$}->{$filename}; | |
78 | $lock_handles->{$$}->{$filename} = undef; | |
79 | close ($fh); | |
80 | } | |
81 | ||
82 | if ($err) { | |
83 | $@ = $err; | |
84 | return undef; | |
85 | } | |
86 | ||
87 | $@ = undef; | |
88 | ||
89 | return $res; | |
90 | } | |
91 | ||
92 | sub file_set_contents { | |
93 | my ($filename, $data, $perm) = @_; | |
94 | ||
95 | $perm = 0644 if !defined($perm); | |
96 | ||
97 | my $tmpname = "$filename.tmp.$$"; | |
98 | ||
99 | eval { | |
100 | my $fh = IO::File->new($tmpname, O_WRONLY|O_CREAT, $perm); | |
101 | die "unable to open file '$tmpname' - $!\n" if !$fh; | |
102 | die "unable to write '$tmpname' - $!\n" unless print $fh $data; | |
103 | die "closing file '$tmpname' failed - $!\n" unless close $fh; | |
104 | }; | |
105 | my $err = $@; | |
106 | ||
107 | if ($err) { | |
108 | unlink $tmpname; | |
109 | die $err; | |
110 | } | |
111 | ||
112 | if (!rename($tmpname, $filename)) { | |
113 | my $msg = "close (rename) atomic file '$filename' failed: $!\n"; | |
114 | unlink $tmpname; | |
115 | die $msg; | |
116 | } | |
117 | } | |
118 | ||
119 | sub file_get_contents { | |
120 | my ($filename, $max) = @_; | |
121 | ||
122 | my $fh = IO::File->new($filename, "r") || | |
123 | die "can't open '$filename' - $!\n"; | |
124 | ||
125 | my $content = safe_read_from($fh, $max); | |
126 | ||
127 | close $fh; | |
128 | ||
129 | return $content; | |
130 | } | |
131 | ||
132 | sub file_read_firstline { | |
133 | my ($filename) = @_; | |
134 | ||
135 | my $fh = IO::File->new ($filename, "r"); | |
136 | return undef if !$fh; | |
137 | my $res = <$fh>; | |
138 | chomp $res; | |
139 | $fh->close; | |
140 | return $res; | |
141 | } | |
142 | ||
143 | sub safe_read_from { | |
144 | my ($fh, $max, $oneline) = @_; | |
145 | ||
146 | $max = 32768 if !$max; | |
147 | ||
148 | my $br = 0; | |
149 | my $input = ''; | |
150 | my $count; | |
151 | while ($count = sysread($fh, $input, 8192, $br)) { | |
152 | $br += $count; | |
153 | die "input too long - aborting\n" if $br > $max; | |
154 | if ($oneline && $input =~ m/^(.*)\n/) { | |
155 | $input = $1; | |
156 | last; | |
157 | } | |
158 | } | |
159 | die "unable to read input - $!\n" if !defined($count); | |
160 | ||
161 | return $input; | |
162 | } | |
163 | ||
164 | sub run_command { | |
165 | my ($cmd, %param) = @_; | |
166 | ||
167 | my $old_umask; | |
168 | ||
169 | $cmd = [ $cmd ] if !ref($cmd); | |
170 | ||
171 | my $cmdstr = join (' ', @$cmd); | |
172 | ||
173 | my $errmsg; | |
174 | my $laststderr; | |
175 | my $timeout; | |
176 | my $oldtimeout; | |
177 | my $pid; | |
178 | ||
179 | eval { | |
180 | my $reader = IO::File->new(); | |
181 | my $writer = IO::File->new(); | |
182 | my $error = IO::File->new(); | |
183 | ||
184 | my $input; | |
185 | my $outfunc; | |
186 | my $errfunc; | |
187 | ||
188 | foreach my $p (keys %param) { | |
189 | if ($p eq 'timeout') { | |
190 | $timeout = $param{$p}; | |
191 | } elsif ($p eq 'umask') { | |
192 | umask($param{$p}); | |
193 | } elsif ($p eq 'errmsg') { | |
194 | $errmsg = $param{$p}; | |
195 | $errfunc = sub { | |
196 | print STDERR "$laststderr\n" if $laststderr; | |
197 | $laststderr = shift; | |
198 | }; | |
199 | } elsif ($p eq 'input') { | |
200 | $input = $param{$p}; | |
201 | } elsif ($p eq 'outfunc') { | |
202 | $outfunc = $param{$p}; | |
203 | } elsif ($p eq 'errfunc') { | |
204 | $errfunc = $param{$p}; | |
205 | } else { | |
206 | die "got unknown parameter '$p' for run_command\n"; | |
207 | } | |
208 | } | |
209 | ||
210 | # try to avoid locale related issues/warnings | |
211 | my $lang = $param{lang} || 'C'; | |
212 | ||
213 | my $orig_pid = $$; | |
214 | ||
215 | eval { | |
329351e2 | 216 | local $ENV{LC_ALL} = $lang; |
e143e9d8 DM |
217 | |
218 | # suppress LVM warnings like: "File descriptor 3 left open"; | |
219 | local $ENV{LVM_SUPPRESS_FD_WARNINGS} = "1"; | |
220 | ||
221 | $pid = open3($writer, $reader, $error, @$cmd) || die $!; | |
222 | }; | |
223 | ||
224 | my $err = $@; | |
225 | ||
226 | # catch exec errors | |
227 | if ($orig_pid != $$) { | |
228 | warn "ERROR: $err"; | |
229 | POSIX::_exit (1); | |
230 | kill ('KILL', $$); | |
231 | } | |
232 | ||
233 | die $err if $err; | |
234 | ||
235 | local $SIG{ALRM} = sub { die "got timeout\n"; } if $timeout; | |
236 | $oldtimeout = alarm($timeout) if $timeout; | |
237 | ||
238 | print $writer $input if defined $input; | |
239 | close $writer; | |
240 | ||
241 | my $select = new IO::Select; | |
242 | $select->add($reader); | |
243 | $select->add($error); | |
244 | ||
245 | my $outlog = ''; | |
246 | my $errlog = ''; | |
247 | ||
248 | my $starttime = time(); | |
249 | ||
250 | while ($select->count) { | |
251 | my @handles = $select->can_read(1); | |
252 | ||
253 | foreach my $h (@handles) { | |
254 | my $buf = ''; | |
255 | my $count = sysread ($h, $buf, 4096); | |
256 | if (!defined ($count)) { | |
257 | my $err = $!; | |
258 | kill (9, $pid); | |
259 | waitpid ($pid, 0); | |
260 | die $err; | |
261 | } | |
262 | $select->remove ($h) if !$count; | |
263 | if ($h eq $reader) { | |
264 | if ($outfunc) { | |
265 | eval { | |
266 | $outlog .= $buf; | |
267 | while ($outlog =~ s/^([^\010\r\n]*)(\r|\n|(\010)+|\r\n)//s) { | |
268 | my $line = $1; | |
269 | &$outfunc($line); | |
270 | } | |
271 | }; | |
272 | my $err = $@; | |
273 | if ($err) { | |
274 | kill (9, $pid); | |
275 | waitpid ($pid, 0); | |
276 | die $err; | |
277 | } | |
278 | } else { | |
279 | print $buf; | |
280 | *STDOUT->flush(); | |
281 | } | |
282 | } elsif ($h eq $error) { | |
283 | if ($errfunc) { | |
284 | eval { | |
285 | $errlog .= $buf; | |
286 | while ($errlog =~ s/^([^\010\r\n]*)(\r|\n|(\010)+|\r\n)//s) { | |
287 | my $line = $1; | |
288 | &$errfunc($line); | |
289 | } | |
290 | }; | |
291 | my $err = $@; | |
292 | if ($err) { | |
293 | kill (9, $pid); | |
294 | waitpid ($pid, 0); | |
295 | die $err; | |
296 | } | |
297 | } else { | |
298 | print STDERR $buf; | |
299 | *STDERR->flush(); | |
300 | } | |
301 | } | |
302 | } | |
303 | } | |
304 | ||
305 | &$outfunc($outlog) if $outfunc && $outlog; | |
306 | &$errfunc($errlog) if $errfunc && $errlog; | |
307 | ||
308 | waitpid ($pid, 0); | |
309 | ||
310 | if ($? == -1) { | |
311 | die "failed to execute\n"; | |
312 | } elsif (my $sig = ($? & 127)) { | |
313 | die "got signal $sig\n"; | |
314 | } elsif (my $ec = ($? >> 8)) { | |
315 | if ($errmsg && $laststderr) { | |
316 | my $lerr = $laststderr; | |
317 | $laststderr = undef; | |
318 | die "$lerr\n"; | |
319 | } | |
320 | die "exit code $ec\n"; | |
321 | } | |
322 | ||
323 | alarm(0); | |
324 | }; | |
325 | ||
326 | my $err = $@; | |
327 | ||
328 | alarm(0); | |
329 | ||
330 | print STDERR "$laststderr\n" if $laststderr; | |
331 | ||
332 | umask ($old_umask) if defined($old_umask); | |
333 | ||
334 | alarm($oldtimeout) if $oldtimeout; | |
335 | ||
336 | if ($err) { | |
337 | if ($pid && ($err eq "got timeout\n")) { | |
338 | kill (9, $pid); | |
339 | waitpid ($pid, 0); | |
340 | die "command '$cmdstr' failed: $err"; | |
341 | } | |
342 | ||
343 | if ($errmsg) { | |
344 | die "$errmsg: $err"; | |
345 | } else { | |
346 | die "command '$cmdstr' failed: $err"; | |
347 | } | |
348 | } | |
349 | } | |
350 | ||
351 | sub split_list { | |
352 | my $listtxt = shift || ''; | |
353 | ||
354 | $listtxt =~ s/[,;\0]/ /g; | |
355 | $listtxt =~ s/^\s+//; | |
356 | ||
357 | my @data = split (/\s+/, $listtxt); | |
358 | ||
359 | return @data; | |
360 | } | |
361 | ||
362 | sub trim { | |
363 | my $txt = shift; | |
364 | ||
365 | return $txt if !defined($txt); | |
366 | ||
367 | $txt =~ s/^\s+//; | |
368 | $txt =~ s/\s+$//; | |
369 | ||
370 | return $txt; | |
371 | } | |
372 | ||
373 | # simple uri templates like "/vms/{vmid}" | |
374 | sub template_replace { | |
375 | my ($tmpl, $data) = @_; | |
376 | ||
377 | my $res = ''; | |
378 | while ($tmpl =~ m/([^{]+)?({([^}]+)})?/g) { | |
379 | $res .= $1 if $1; | |
380 | $res .= ($data->{$3} || '-') if $2; | |
381 | } | |
382 | return $res; | |
383 | } | |
384 | ||
385 | sub safe_print { | |
386 | my ($filename, $fh, $data) = @_; | |
387 | ||
388 | return if !$data; | |
389 | ||
390 | my $res = print $fh $data; | |
391 | ||
392 | die "write to '$filename' failed\n" if !$res; | |
393 | } | |
394 | ||
395 | sub debmirrors { | |
396 | ||
397 | return { | |
398 | 'at' => 'ftp.at.debian.org', | |
399 | 'au' => 'ftp.au.debian.org', | |
400 | 'be' => 'ftp.be.debian.org', | |
401 | 'bg' => 'ftp.bg.debian.org', | |
402 | 'br' => 'ftp.br.debian.org', | |
403 | 'ca' => 'ftp.ca.debian.org', | |
404 | 'ch' => 'ftp.ch.debian.org', | |
405 | 'cl' => 'ftp.cl.debian.org', | |
406 | 'cz' => 'ftp.cz.debian.org', | |
407 | 'de' => 'ftp.de.debian.org', | |
408 | 'dk' => 'ftp.dk.debian.org', | |
409 | 'ee' => 'ftp.ee.debian.org', | |
410 | 'es' => 'ftp.es.debian.org', | |
411 | 'fi' => 'ftp.fi.debian.org', | |
412 | 'fr' => 'ftp.fr.debian.org', | |
413 | 'gr' => 'ftp.gr.debian.org', | |
414 | 'hk' => 'ftp.hk.debian.org', | |
415 | 'hr' => 'ftp.hr.debian.org', | |
416 | 'hu' => 'ftp.hu.debian.org', | |
417 | 'ie' => 'ftp.ie.debian.org', | |
418 | 'is' => 'ftp.is.debian.org', | |
419 | 'it' => 'ftp.it.debian.org', | |
420 | 'jp' => 'ftp.jp.debian.org', | |
421 | 'kr' => 'ftp.kr.debian.org', | |
422 | 'mx' => 'ftp.mx.debian.org', | |
423 | 'nl' => 'ftp.nl.debian.org', | |
424 | 'no' => 'ftp.no.debian.org', | |
425 | 'nz' => 'ftp.nz.debian.org', | |
426 | 'pl' => 'ftp.pl.debian.org', | |
427 | 'pt' => 'ftp.pt.debian.org', | |
428 | 'ro' => 'ftp.ro.debian.org', | |
429 | 'ru' => 'ftp.ru.debian.org', | |
430 | 'se' => 'ftp.se.debian.org', | |
431 | 'si' => 'ftp.si.debian.org', | |
432 | 'sk' => 'ftp.sk.debian.org', | |
433 | 'tr' => 'ftp.tr.debian.org', | |
434 | 'tw' => 'ftp.tw.debian.org', | |
435 | 'gb' => 'ftp.uk.debian.org', | |
436 | 'us' => 'ftp.us.debian.org', | |
437 | }; | |
438 | } | |
439 | ||
440 | sub kvmkeymaps { | |
441 | return { | |
442 | 'dk' => ['Danish', 'da', 'qwerty/dk-latin1.kmap.gz', 'dk', 'nodeadkeys'], | |
443 | 'de' => ['German', 'de', 'qwertz/de-latin1-nodeadkeys.kmap.gz', 'de', 'nodeadkeys' ], | |
444 | 'de-ch' => ['Swiss-German', 'de-ch', 'qwertz/sg-latin1.kmap.gz', 'ch', 'de_nodeadkeys' ], | |
445 | 'en-gb' => ['United Kingdom', 'en-gb', 'qwerty/uk.kmap.gz' , 'gb', 'intl' ], | |
446 | 'en-us' => ['U.S. English', 'en-us', 'qwerty/us-latin1.kmap.gz', 'us', 'intl' ], | |
447 | 'es' => ['Spanish', 'es', 'qwerty/es.kmap.gz', 'es', 'nodeadkeys'], | |
448 | #'et' => [], # Ethopia or Estonia ?? | |
449 | 'fi' => ['Finnish', 'fi', 'qwerty/fi-latin1.kmap.gz', 'fi', 'nodeadkeys'], | |
450 | #'fo' => ['Faroe Islands', 'fo', ???, 'fo', 'nodeadkeys'], | |
451 | 'fr' => ['French', 'fr', 'azerty/fr-latin1.kmap.gz', 'fr', 'nodeadkeys'], | |
452 | 'fr-be' => ['Belgium-French', 'fr-be', 'azerty/be2-latin1.kmap.gz', 'be', 'nodeadkeys'], | |
453 | 'fr-ca' => ['Canada-French', 'fr-ca', 'qwerty/cf.kmap.gz', 'ca', 'fr-legacy'], | |
454 | 'fr-ch' => ['Swiss-French', 'fr-ch', 'qwertz/fr_CH-latin1.kmap.gz', 'ch', 'fr_nodeadkeys'], | |
455 | #'hr' => ['Croatia', 'hr', 'qwertz/croat.kmap.gz', 'hr', ??], # latin2? | |
456 | 'hu' => ['Hungarian', 'hu', 'qwertz/hu.kmap.gz', 'hu', undef], | |
457 | 'is' => ['Icelandic', 'is', 'qwerty/is-latin1.kmap.gz', 'is', 'nodeadkeys'], | |
458 | 'it' => ['Italian', 'it', 'qwerty/it2.kmap.gz', 'it', 'nodeadkeys'], | |
459 | 'jp' => ['Japanese', 'ja', 'qwerty/jp106.kmap.gz', 'jp', undef], | |
460 | 'lt' => ['Lithuanian', 'lt', 'qwerty/lt.kmap.gz', 'lt', 'std'], | |
461 | #'lv' => ['Latvian', 'lv', 'qwerty/lv-latin4.kmap.gz', 'lv', ??], # latin4 or latin7? | |
462 | 'mk' => ['Macedonian', 'mk', 'qwerty/mk.kmap.gz', 'mk', 'nodeadkeys'], | |
463 | 'nl' => ['Dutch', 'nl', 'qwerty/nl.kmap.gz', 'nl', undef], | |
464 | #'nl-be' => ['Belgium-Dutch', 'nl-be', ?, ?, ?], | |
465 | 'no' => ['Norwegian', 'no', 'qwerty/no-latin1.kmap.gz', 'no', 'nodeadkeys'], | |
466 | 'pl' => ['Polish', 'pl', 'qwerty/pl.kmap.gz', 'pl', undef], | |
467 | 'pt' => ['Portuguese', 'pt', 'qwerty/pt-latin1.kmap.gz', 'pt', 'nodeadkeys'], | |
468 | 'pt-br' => ['Brazil-Portuguese', 'pt-br', 'qwerty/br-latin1.kmap.gz', 'br', 'nodeadkeys'], | |
469 | #'ru' => ['Russian', 'ru', 'qwerty/ru.kmap.gz', 'ru', undef], # dont know? | |
470 | 'si' => ['Slovenian', 'sl', 'qwertz/slovene.kmap.gz', 'si', undef], | |
471 | #'sv' => [], Swedish ? | |
472 | #'th' => [], | |
473 | #'tr' => [], | |
474 | }; | |
475 | } | |
476 | ||
477 | sub extract_param { | |
478 | my ($param, $key) = @_; | |
479 | ||
480 | my $res = $param->{$key}; | |
481 | delete $param->{$key}; | |
482 | ||
483 | return $res; | |
484 | } | |
485 | ||
486 | sub next_vnc_port { | |
487 | ||
488 | for (my $p = 5900; $p < 6000; $p++) { | |
489 | ||
490 | my $sock = IO::Socket::INET->new (Listen => 5, | |
491 | LocalAddr => 'localhost', | |
492 | LocalPort => $p, | |
493 | ReuseAddr => 1, | |
494 | Proto => 0); | |
495 | ||
496 | if ($sock) { | |
497 | close ($sock); | |
498 | return $p; | |
499 | } | |
500 | } | |
501 | ||
502 | die "unable to find free vnc port"; | |
503 | }; | |
504 | ||
505 | # NOTE: NFS syscall can't be interrupted, so alarm does | |
506 | # not work to provide timeouts. | |
507 | # from 'man nfs': "Only SIGKILL can interrupt a pending NFS operation" | |
508 | # So the spawn external 'df' process instead of using | |
509 | # Filesys::Df (which uses statfs syscall) | |
510 | sub df { | |
511 | my ($path, $timeout) = @_; | |
512 | ||
513 | my $cmd = [ 'df', '-P', '-B', '1', $path]; | |
514 | ||
515 | my $res = { | |
516 | total => 0, | |
517 | used => 0, | |
518 | avail => 0, | |
519 | }; | |
520 | ||
521 | my $parser = sub { | |
522 | my $line = shift; | |
523 | if (my ($fsid, $total, $used, $avail) = $line =~ | |
524 | m/^(\S+.*)\s+(\d+)\s+(\d+)\s+(\d+)\s+\d+%\s.*$/) { | |
525 | $res = { | |
526 | total => $total, | |
527 | used => $used, | |
528 | avail => $avail, | |
529 | }; | |
530 | } | |
531 | }; | |
532 | eval { run_command($cmd, timeout => $timeout, outfunc => $parser); }; | |
533 | warn $@ if $@; | |
534 | ||
535 | return $res; | |
536 | } | |
537 | ||
538 | # UPID helper | |
539 | # We use this to uniquely identify a process. | |
540 | # An 'Unique Process ID' has the following format: | |
541 | # "UPID:$node:$pid:$pstart:$startime:$dtype:$id:$user" | |
542 | ||
543 | sub upid_encode { | |
544 | my $d = shift; | |
545 | ||
546 | return sprintf("UPID:%s:%08X:%08X:%08X:%s:%s:%s:", $d->{node}, $d->{pid}, | |
547 | $d->{pstart}, $d->{starttime}, $d->{type}, $d->{id}, | |
548 | $d->{user}); | |
549 | } | |
550 | ||
551 | sub upid_decode { | |
552 | my ($upid, $noerr) = @_; | |
553 | ||
554 | my $res; | |
555 | my $filename; | |
556 | ||
557 | # "UPID:$node:$pid:$pstart:$startime:$dtype:$id:$user" | |
558 | if ($upid =~ m/^UPID:([A-Za-z][[:alnum:]\-]*[[:alnum:]]+):([0-9A-Fa-f]{8}):([0-9A-Fa-f]{8}):([0-9A-Fa-f]{8}):([^:\s]+):([^:\s]*):([^:\s]+):$/) { | |
559 | $res->{node} = $1; | |
560 | $res->{pid} = hex($2); | |
561 | $res->{pstart} = hex($3); | |
562 | $res->{starttime} = hex($4); | |
563 | $res->{type} = $5; | |
564 | $res->{id} = $6; | |
565 | $res->{user} = $7; | |
566 | ||
567 | my $subdir = substr($4, 7, 8); | |
568 | $filename = "$pvetaskdir/$subdir/$upid"; | |
569 | ||
570 | } else { | |
571 | return undef if $noerr; | |
572 | die "unable to parse worker upid '$upid'\n"; | |
573 | } | |
574 | ||
575 | return wantarray ? ($res, $filename) : $res; | |
576 | } | |
577 | ||
578 | sub upid_open { | |
579 | my ($upid) = @_; | |
580 | ||
581 | my ($task, $filename) = upid_decode($upid); | |
582 | ||
583 | my $dirname = dirname($filename); | |
584 | make_path($dirname); | |
585 | ||
586 | my $wwwid = getpwnam('www-data') || | |
587 | die "getpwnam failed"; | |
588 | ||
589 | my $perm = 0640; | |
590 | ||
591 | my $outfh = IO::File->new ($filename, O_WRONLY|O_CREAT|O_EXCL, $perm) || | |
592 | die "unable to create output file '$filename' - $!\n"; | |
593 | chown $wwwid, $outfh; | |
594 | ||
595 | return $outfh; | |
596 | }; | |
597 | ||
598 | sub upid_read_status { | |
599 | my ($upid) = @_; | |
600 | ||
601 | my ($task, $filename) = upid_decode($upid); | |
602 | my $fh = IO::File->new($filename, "r"); | |
603 | return "unable to open file - $!" if !$fh; | |
604 | my $maxlen = 1024; | |
605 | sysseek($fh, -$maxlen, 2); | |
606 | my $readbuf = ''; | |
607 | my $br = sysread($fh, $readbuf, $maxlen); | |
608 | close($fh); | |
609 | if ($br) { | |
610 | return "unable to extract last line" | |
611 | if $readbuf !~ m/\n?(.+)$/; | |
612 | my $line = $1; | |
613 | if ($line =~ m/^TASK OK$/) { | |
614 | return 'OK'; | |
615 | } elsif ($line =~ m/^TASK ERROR: (.+)$/) { | |
616 | return $1; | |
617 | } else { | |
618 | return "unexpected status"; | |
619 | } | |
620 | } | |
621 | return "unable to read tail (got $br bytes)"; | |
622 | } | |
623 | ||
624 | # useful functions to store comments in config files | |
625 | sub encode_text { | |
626 | my ($text) = @_; | |
627 | ||
628 | # all control and hi-bit characters, and ':' | |
629 | my $unsafe = "^\x20-\x39\x3b-\x7e"; | |
630 | return uri_escape(Encode::encode("utf8", $text), $unsafe); | |
631 | } | |
632 | ||
633 | sub decode_text { | |
634 | my ($data) = @_; | |
635 | ||
636 | return Encode::decode("utf8", uri_unescape($data)); | |
637 | } | |
638 | ||
a413a515 DM |
639 | sub random_ether_addr { |
640 | ||
641 | my $rand = Digest::SHA1::sha1_hex(rand(), time()); | |
642 | ||
643 | my $mac = ''; | |
644 | for (my $i = 0; $i < 6; $i++) { | |
645 | my $ss = hex(substr($rand, $i*2, 2)); | |
646 | if (!$i) { | |
647 | $ss &= 0xfe; # clear multicast | |
648 | $ss |= 2; # set local id | |
649 | } | |
650 | $ss = sprintf("%02X", $ss); | |
651 | ||
652 | if (!$i) { | |
653 | $mac .= "$ss"; | |
654 | } else { | |
655 | $mac .= ":$ss"; | |
656 | } | |
657 | } | |
658 | ||
659 | return $mac; | |
660 | } | |
e143e9d8 DM |
661 | |
662 | 1; |