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