]>
git.proxmox.com Git - pve-common.git/blob - src/PVE/Tools.pm
7 use Socket
qw(AF_INET AF_INET6 AI_ALL AI_V4MAPPED);
10 use File
::Path
qw(make_path);
11 use Filesys
::Df
(); # don't overwrite our df()
16 use Fcntl
qw(:DEFAULT :flock);
22 use String
::ShellQuote
;
23 use Time
::HiRes
qw(usleep gettimeofday tv_interval alarm);
25 # avoid warning when parsing long hex values with hex()
26 no warnings
'portable'; # Support for 64-bit ints required
46 my $pvelogdir = "/var/log/pve";
47 my $pvetaskdir = "$pvelogdir/tasks";
52 my $IPV4OCTET = "(?:25[0-5]|(?:2[0-4]|1[0-9]|[1-9])?[0-9])";
53 our $IPV4RE = "(?:(?:$IPV4OCTET\\.){3}$IPV4OCTET)";
54 my $IPV6H16 = "(?:[0-9a-fA-F]{1,4})";
55 my $IPV6LS32 = "(?:(?:$IPV4RE|$IPV6H16:$IPV6H16))";
58 "(?:(?:" . "(?:$IPV6H16:){6})$IPV6LS32)|" .
59 "(?:(?:" . "::(?:$IPV6H16:){5})$IPV6LS32)|" .
60 "(?:(?:(?:" . "$IPV6H16)?::(?:$IPV6H16:){4})$IPV6LS32)|" .
61 "(?:(?:(?:(?:$IPV6H16:){0,1}$IPV6H16)?::(?:$IPV6H16:){3})$IPV6LS32)|" .
62 "(?:(?:(?:(?:$IPV6H16:){0,2}$IPV6H16)?::(?:$IPV6H16:){2})$IPV6LS32)|" .
63 "(?:(?:(?:(?:$IPV6H16:){0,3}$IPV6H16)?::(?:$IPV6H16:){1})$IPV6LS32)|" .
64 "(?:(?:(?:(?:$IPV6H16:){0,4}$IPV6H16)?::" . ")$IPV6LS32)|" .
65 "(?:(?:(?:(?:$IPV6H16:){0,5}$IPV6H16)?::" . ")$IPV6H16)|" .
66 "(?:(?:(?:(?:$IPV6H16:){0,6}$IPV6H16)?::" . ")))";
68 our $IPRE = "(?:$IPV4RE|$IPV6RE)";
70 use constant (CLONE_NEWNS
=> 0x00020000,
71 CLONE_NEWUTS
=> 0x04000000,
72 CLONE_NEWIPC
=> 0x08000000,
73 CLONE_NEWUSER
=> 0x10000000,
74 CLONE_NEWPID
=> 0x20000000,
75 CLONE_NEWNET
=> 0x40000000);
77 sub run_with_timeout
{
78 my ($timeout, $code, @param) = @_;
80 die "got timeout\n" if $timeout <= 0;
82 my $prev_alarm = alarm 0; # suspend outer alarm early
89 local $SIG{ALRM
} = sub { $sigcount++; die "got timeout\n"; };
90 local $SIG{PIPE
} = sub { $sigcount++; die "broken pipe\n" };
91 local $SIG{__DIE__
}; # see SA bug 4631
95 eval { $res = &$code(@param); };
97 alarm(0); # avoid race conditions
106 # this shouldn't happen anymore?
107 die "unknown error" if $sigcount && !$err; # seems to happen sometimes
114 # flock: we use one file handle per process, so lock file
115 # can be called multiple times and succeeds for the same process.
117 my $lock_handles = {};
120 my ($filename, $timeout, $shared, $code, @param) = @_;
122 $timeout = 10 if !$timeout;
124 my $mode = $shared ? LOCK_SH
: LOCK_EX
;
126 my $lock_func = sub {
127 if (!$lock_handles->{$$}->{$filename}) {
128 $lock_handles->{$$}->{$filename} = new IO
::File
(">>$filename") ||
129 die "can't open file - $!\n";
132 if (!flock ($lock_handles->{$$}->{$filename}, $mode|LOCK_NB
)) {
133 print STDERR
"trying to aquire lock...";
136 $success = flock($lock_handles->{$$}->{$filename}, $mode);
137 # try again on EINTR (see bug #273)
138 if ($success || ($! != EINTR
)) {
143 print STDERR
" failed\n";
144 die "can't aquire lock - $!\n";
146 print STDERR
" OK\n";
152 eval { run_with_timeout
($timeout, $lock_func); };
155 $err = "can't lock file '$filename' - $err";
157 eval { $res = &$code(@param) };
161 if (my $fh = $lock_handles->{$$}->{$filename}) {
162 $lock_handles->{$$}->{$filename} = undef;
178 my ($filename, $timeout, $code, @param) = @_;
180 return lock_file_full
($filename, $timeout, 0, $code, @param);
183 sub file_set_contents
{
184 my ($filename, $data, $perm) = @_;
186 $perm = 0644 if !defined($perm);
188 my $tmpname = "$filename.tmp.$$";
191 my $fh = IO
::File-
>new($tmpname, O_WRONLY
|O_CREAT
, $perm);
192 die "unable to open file '$tmpname' - $!\n" if !$fh;
193 die "unable to write '$tmpname' - $!\n" unless print $fh $data;
194 die "closing file '$tmpname' failed - $!\n" unless close $fh;
203 if (!rename($tmpname, $filename)) {
204 my $msg = "close (rename) atomic file '$filename' failed: $!\n";
210 sub file_get_contents
{
211 my ($filename, $max) = @_;
213 my $fh = IO
::File-
>new($filename, "r") ||
214 die "can't open '$filename' - $!\n";
216 my $content = safe_read_from
($fh, $max);
223 sub file_read_firstline
{
226 my $fh = IO
::File-
>new ($filename, "r");
227 return undef if !$fh;
235 my ($fh, $max, $oneline) = @_;
237 $max = 32768 if !$max;
242 while ($count = sysread($fh, $input, 8192, $br)) {
244 die "input too long - aborting\n" if $br > $max;
245 if ($oneline && $input =~ m/^(.*)\n/) {
250 die "unable to read input - $!\n" if !defined($count);
255 # The $cmd parameter can be:
257 # This is generally executed by passing it to the shell with the -c option.
258 # However, it can be executed in one of two ways, depending on whether
259 # there's a pipe involved:
260 # *) with pipe: passed explicitly to bash -c, prefixed with:
262 # *) without a pipe: passed to perl's open3 which uses 'sh -c'
263 # (Note that this may result in two different syntax requirements!)
265 # -) an array of arguments (strings)
266 # Will be executed without interference from a shell. (Parameters are passed
267 # as is, no escape sequences of strings will be touched.)
268 # -) an array of arrays
269 # Each array represents a command, and each command's output is piped into
270 # the following command's standard input.
271 # For this a shell command string is created with pipe symbols between each
273 # Each command is a list of strings meant to end up in the final command
274 # unchanged. In order to achieve this, every argument is shell-quoted.
275 # Quoting can be disabled for a particular argument by turning it into a
276 # reference, this allows inserting arbitrary shell options.
277 # For instance: the $cmd [ [ 'echo', 'hello', \'>/dev/null' ] ] will not
278 # produce any output, while the $cmd [ [ 'echo', 'hello', '>/dev/null' ] ]
279 # will literally print: hello >/dev/null
281 my ($cmd, %param) = @_;
286 if (my $ref = ref($cmd)) {
287 if (ref($cmd->[0])) {
288 $cmdstr = 'set -o pipefail && ';
290 foreach my $command (@$cmd) {
291 # concatenate quoted parameters
292 # strings which are passed by reference are NOT shell quoted
293 $cmdstr .= $pipe . join(' ', map { ref($_) ?
$$_ : shellquote
($_) } @$command);
296 $cmd = [ '/bin/bash', '-c', "set -o pipefail && $cmdstr" ];
298 $cmdstr = cmd2string
($cmd);
303 # see 'man bash' for option pipefail
304 $cmd = [ '/bin/bash', '-c', "set -o pipefail && $cmd" ];
325 foreach my $p (keys %param) {
326 if ($p eq 'timeout') {
327 $timeout = $param{$p};
328 } elsif ($p eq 'umask') {
329 $old_umask = umask($param{$p});
330 } elsif ($p eq 'errmsg') {
331 $errmsg = $param{$p};
332 } elsif ($p eq 'input') {
334 } elsif ($p eq 'output') {
335 $output = $param{$p};
336 } elsif ($p eq 'outfunc') {
337 $outfunc = $param{$p};
338 } elsif ($p eq 'errfunc') {
339 $errfunc = $param{$p};
340 } elsif ($p eq 'logfunc') {
341 $logfunc = $param{$p};
342 } elsif ($p eq 'afterfork') {
343 $afterfork = $param{$p};
345 die "got unknown parameter '$p' for run_command\n";
350 my $origerrfunc = $errfunc;
354 &$origerrfunc("$laststderr\n");
356 print STDERR
"$laststderr\n" if $laststderr;
363 my $reader = $output && $output =~ m/^>&/ ?
$output : IO
::File-
>new();
364 my $writer = $input && $input =~ m/^<&/ ?
$input : IO
::File-
>new();
365 my $error = IO
::File-
>new();
367 # try to avoid locale related issues/warnings
368 my $lang = $param{lang
} || 'C';
373 local $ENV{LC_ALL
} = $lang;
375 # suppress LVM warnings like: "File descriptor 3 left open";
376 local $ENV{LVM_SUPPRESS_FD_WARNINGS
} = "1";
378 $pid = open3
($writer, $reader, $error, @$cmd) || die $!;
380 # if we pipe fron STDIN, open3 closes STDIN, so we we
381 # a perl warning "Filehandle STDIN reopened as GENXYZ .. "
382 # as soon as we open a new file.
383 # to avoid that we open /dev/null
384 if (!ref($writer) && !defined(fileno(STDIN
))) {
386 open(STDIN
, "</dev/null");
393 if ($orig_pid != $$) {
401 local $SIG{ALRM
} = sub { die "got timeout\n"; } if $timeout;
402 $oldtimeout = alarm($timeout) if $timeout;
404 &$afterfork() if $afterfork;
407 print $writer $input if defined $input;
411 my $select = new IO
::Select
;
412 $select->add($reader) if ref($reader);
413 $select->add($error);
418 my $starttime = time();
420 while ($select->count) {
421 my @handles = $select->can_read(1);
423 foreach my $h (@handles) {
425 my $count = sysread ($h, $buf, 4096);
426 if (!defined ($count)) {
432 $select->remove ($h) if !$count;
434 if ($outfunc || $logfunc) {
437 while ($outlog =~ s/^([^\010\r\n]*)(\r|\n|(\010)+|\r\n)//s) {
439 &$outfunc($line) if $outfunc;
440 &$logfunc($line) if $logfunc;
453 } elsif ($h eq $error) {
454 if ($errfunc || $logfunc) {
457 while ($errlog =~ s/^([^\010\r\n]*)(\r|\n|(\010)+|\r\n)//s) {
459 &$errfunc($line) if $errfunc;
460 &$logfunc($line) if $logfunc;
477 &$outfunc($outlog) if $outfunc && $outlog;
478 &$logfunc($outlog) if $logfunc && $outlog;
480 &$errfunc($errlog) if $errfunc && $errlog;
481 &$logfunc($errlog) if $logfunc && $errlog;
486 die "failed to execute\n";
487 } elsif (my $sig = ($? & 127)) {
488 die "got signal $sig\n";
489 } elsif (my $ec = ($? >> 8)) {
490 if (!($ec == 24 && ($cmdstr =~ m
|^(\S
+/)?rsync\s
|))) {
491 if ($errmsg && $laststderr) {
492 my $lerr = $laststderr;
496 die "exit code $ec\n";
507 if ($errmsg && $laststderr) {
508 &$errfunc(undef); # flush laststderr
511 umask ($old_umask) if defined($old_umask);
513 alarm($oldtimeout) if $oldtimeout;
516 if ($pid && ($err eq "got timeout\n")) {
519 die "command '$cmdstr' failed: $err";
523 $err =~ s/^usermod:\s*// if $cmdstr =~ m
|^(\S
+/)?usermod\s
|;
526 die "command '$cmdstr' failed: $err";
534 my $listtxt = shift || '';
536 return split (/\0/, $listtxt) if $listtxt =~ m/\0/;
538 $listtxt =~ s/[,;]/ /g;
539 $listtxt =~ s/^\s+//;
541 my @data = split (/\s+/, $listtxt);
549 return $txt if !defined($txt);
557 # simple uri templates like "/vms/{vmid}"
558 sub template_replace
{
559 my ($tmpl, $data) = @_;
561 return $tmpl if !$tmpl;
564 while ($tmpl =~ m/([^{]+)?({([^}]+)})?/g) {
566 $res .= ($data->{$3} || '-') if $2;
572 my ($filename, $fh, $data) = @_;
576 my $res = print $fh $data;
578 die "write to '$filename' failed\n" if !$res;
584 'at' => 'ftp.at.debian.org',
585 'au' => 'ftp.au.debian.org',
586 'be' => 'ftp.be.debian.org',
587 'bg' => 'ftp.bg.debian.org',
588 'br' => 'ftp.br.debian.org',
589 'ca' => 'ftp.ca.debian.org',
590 'ch' => 'ftp.ch.debian.org',
591 'cl' => 'ftp.cl.debian.org',
592 'cz' => 'ftp.cz.debian.org',
593 'de' => 'ftp.de.debian.org',
594 'dk' => 'ftp.dk.debian.org',
595 'ee' => 'ftp.ee.debian.org',
596 'es' => 'ftp.es.debian.org',
597 'fi' => 'ftp.fi.debian.org',
598 'fr' => 'ftp.fr.debian.org',
599 'gr' => 'ftp.gr.debian.org',
600 'hk' => 'ftp.hk.debian.org',
601 'hr' => 'ftp.hr.debian.org',
602 'hu' => 'ftp.hu.debian.org',
603 'ie' => 'ftp.ie.debian.org',
604 'is' => 'ftp.is.debian.org',
605 'it' => 'ftp.it.debian.org',
606 'jp' => 'ftp.jp.debian.org',
607 'kr' => 'ftp.kr.debian.org',
608 'mx' => 'ftp.mx.debian.org',
609 'nl' => 'ftp.nl.debian.org',
610 'no' => 'ftp.no.debian.org',
611 'nz' => 'ftp.nz.debian.org',
612 'pl' => 'ftp.pl.debian.org',
613 'pt' => 'ftp.pt.debian.org',
614 'ro' => 'ftp.ro.debian.org',
615 'ru' => 'ftp.ru.debian.org',
616 'se' => 'ftp.se.debian.org',
617 'si' => 'ftp.si.debian.org',
618 'sk' => 'ftp.sk.debian.org',
619 'tr' => 'ftp.tr.debian.org',
620 'tw' => 'ftp.tw.debian.org',
621 'gb' => 'ftp.uk.debian.org',
622 'us' => 'ftp.us.debian.org',
627 'dk' => ['Danish', 'da', 'qwerty/dk-latin1.kmap.gz', 'dk', 'nodeadkeys'],
628 'de' => ['German', 'de', 'qwertz/de-latin1-nodeadkeys.kmap.gz', 'de', 'nodeadkeys' ],
629 'de-ch' => ['Swiss-German', 'de-ch', 'qwertz/sg-latin1.kmap.gz', 'ch', 'de_nodeadkeys' ],
630 'en-gb' => ['United Kingdom', 'en-gb', 'qwerty/uk.kmap.gz' , 'gb', undef],
631 'en-us' => ['U.S. English', 'en-us', 'qwerty/us-latin1.kmap.gz', 'us', undef ],
632 'es' => ['Spanish', 'es', 'qwerty/es.kmap.gz', 'es', 'nodeadkeys'],
633 #'et' => [], # Ethopia or Estonia ??
634 'fi' => ['Finnish', 'fi', 'qwerty/fi-latin1.kmap.gz', 'fi', 'nodeadkeys'],
635 #'fo' => ['Faroe Islands', 'fo', ???, 'fo', 'nodeadkeys'],
636 'fr' => ['French', 'fr', 'azerty/fr-latin1.kmap.gz', 'fr', 'nodeadkeys'],
637 'fr-be' => ['Belgium-French', 'fr-be', 'azerty/be2-latin1.kmap.gz', 'be', 'nodeadkeys'],
638 'fr-ca' => ['Canada-French', 'fr-ca', 'qwerty/cf.kmap.gz', 'ca', 'fr-legacy'],
639 'fr-ch' => ['Swiss-French', 'fr-ch', 'qwertz/fr_CH-latin1.kmap.gz', 'ch', 'fr_nodeadkeys'],
640 #'hr' => ['Croatia', 'hr', 'qwertz/croat.kmap.gz', 'hr', ??], # latin2?
641 'hu' => ['Hungarian', 'hu', 'qwertz/hu.kmap.gz', 'hu', undef],
642 'is' => ['Icelandic', 'is', 'qwerty/is-latin1.kmap.gz', 'is', 'nodeadkeys'],
643 'it' => ['Italian', 'it', 'qwerty/it2.kmap.gz', 'it', 'nodeadkeys'],
644 'jp' => ['Japanese', 'ja', 'qwerty/jp106.kmap.gz', 'jp', undef],
645 'lt' => ['Lithuanian', 'lt', 'qwerty/lt.kmap.gz', 'lt', 'std'],
646 #'lv' => ['Latvian', 'lv', 'qwerty/lv-latin4.kmap.gz', 'lv', ??], # latin4 or latin7?
647 'mk' => ['Macedonian', 'mk', 'qwerty/mk.kmap.gz', 'mk', 'nodeadkeys'],
648 'nl' => ['Dutch', 'nl', 'qwerty/nl.kmap.gz', 'nl', undef],
649 #'nl-be' => ['Belgium-Dutch', 'nl-be', ?, ?, ?],
650 'no' => ['Norwegian', 'no', 'qwerty/no-latin1.kmap.gz', 'no', 'nodeadkeys'],
651 'pl' => ['Polish', 'pl', 'qwerty/pl.kmap.gz', 'pl', undef],
652 'pt' => ['Portuguese', 'pt', 'qwerty/pt-latin1.kmap.gz', 'pt', 'nodeadkeys'],
653 'pt-br' => ['Brazil-Portuguese', 'pt-br', 'qwerty/br-latin1.kmap.gz', 'br', 'nodeadkeys'],
654 #'ru' => ['Russian', 'ru', 'qwerty/ru.kmap.gz', 'ru', undef], # dont know?
655 'si' => ['Slovenian', 'sl', 'qwertz/slovene.kmap.gz', 'si', undef],
656 'se' => ['Swedish', 'sv', 'qwerty/se-latin1.kmap.gz', 'se', 'nodeadkeys'],
658 'tr' => ['Turkish', 'tr', 'qwerty/trq.kmap.gz', 'tr', undef],
661 my $kvmkeymaparray = [];
662 foreach my $lc (keys %$keymaphash) {
663 push @$kvmkeymaparray, $keymaphash->{$lc}->[1];
671 return $kvmkeymaparray;
675 my ($param, $key) = @_;
677 my $res = $param->{$key};
678 delete $param->{$key};
683 # Note: we use this to wait until vncterm/spiceterm is ready
684 sub wait_for_vnc_port
{
685 my ($port, $timeout) = @_;
687 $timeout = 5 if !$timeout;
689 my $starttime = [gettimeofday
];
692 while (($elapsed = tv_interval
($starttime)) < $timeout) {
693 if (my $fh = IO
::File-
>new ("/proc/net/tcp", "r")) {
694 while (defined (my $line = <$fh>)) {
695 if ($line =~ m/^\s*\d+:\s+([0-9A-Fa-f]{8}):([0-9A-Fa-f]{4})\s/) {
696 if ($port == hex($2)) {
704 $sleeptime += 100000 if $sleeptime < 1000000;
711 sub next_unused_port
{
712 my ($range_start, $range_end, $family) = @_;
714 # We use a file to register allocated ports.
715 # Those registrations expires after $expiretime.
716 # We use this to avoid race conditions between
717 # allocation and use of ports.
719 my $filename = "/var/tmp/pve-reserved-ports";
728 if (my $fh = IO
::File-
>new ($filename, "r")) {
729 while (my $line = <$fh>) {
730 if ($line =~ m/^(\d+)\s(\d+)$/) {
731 my ($port, $timestamp) = ($1, $2);
732 if (($timestamp + $expiretime) > $ctime) {
733 $ports->{$port} = $timestamp; # not expired
741 for (my $p = $range_start; $p < $range_end; $p++) {
742 next if $ports->{$p}; # reserved
744 my $sock = IO
::Socket
::IP-
>new(Listen
=> 5,
749 GetAddrInfoFlags
=> 0);
754 $ports->{$p} = $ctime;
760 foreach my $p (keys %$ports) {
761 $data .= "$p $ports->{$p}\n";
764 file_set_contents
($filename, $data);
769 my $p = lock_file
($filename, 10, $code);
772 die "unable to find free port (${range_start}-${range_end})\n" if !$p;
777 sub next_migrate_port
{
779 return next_unused_port
(60000, 60050, $family);
784 return next_unused_port
(5900, 6000, $family);
787 sub next_spice_port
{
789 return next_unused_port
(61000, 61099, $family);
792 # NOTE: NFS syscall can't be interrupted, so alarm does
793 # not work to provide timeouts.
794 # from 'man nfs': "Only SIGKILL can interrupt a pending NFS operation"
795 # So fork() before using Filesys::Df
797 my ($path, $timeout) = @_;
805 my $pipe = IO
::Pipe-
>new();
807 if (!defined($child)) {
808 warn "fork failed: $!\n";
815 my $df = Filesys
::Df
::df
($path, 1);
816 print {$pipe} "$df->{blocks}\n$df->{used}\n$df->{bavail}\n";
828 my $readvalues = sub {
829 $res->{total
} = int(<$pipe>);
830 $res->{used
} = int(<$pipe>);
831 $res->{avail
} = int(<$pipe>);
834 run_with_timeout
($timeout, $readvalues);
838 kill('KILL', $child);
844 # We use this to uniquely identify a process.
845 # An 'Unique Process ID' has the following format:
846 # "UPID:$node:$pid:$pstart:$startime:$dtype:$id:$user"
851 # Note: pstart can be > 32bit if uptime > 497 days, so this can result in
852 # more that 8 characters for pstart
853 return sprintf("UPID:%s:%08X:%08X:%08X:%s:%s:%s:", $d->{node
}, $d->{pid
},
854 $d->{pstart
}, $d->{starttime
}, $d->{type
}, $d->{id
},
859 my ($upid, $noerr) = @_;
864 # "UPID:$node:$pid:$pstart:$startime:$dtype:$id:$user"
865 # Note: allow up to 9 characters for pstart (work until 20 years uptime)
866 if ($upid =~ m/^UPID:([a-zA-Z0-9]([a-zA-Z0-9\-]*[a-zA-Z0-9])?):([0-9A-Fa-f]{8}):([0-9A-Fa-f]{8,9}):([0-9A-Fa-f]{8}):([^:\s]+):([^:\s]*):([^:\s]+):$/) {
868 $res->{pid
} = hex($3);
869 $res->{pstart
} = hex($4);
870 $res->{starttime
} = hex($5);
875 my $subdir = substr($5, 7, 8);
876 $filename = "$pvetaskdir/$subdir/$upid";
879 return undef if $noerr;
880 die "unable to parse worker upid '$upid'\n";
883 return wantarray ?
($res, $filename) : $res;
889 my ($task, $filename) = upid_decode
($upid);
891 my $dirname = dirname
($filename);
894 my $wwwid = getpwnam('www-data') ||
895 die "getpwnam failed";
899 my $outfh = IO
::File-
>new ($filename, O_WRONLY
|O_CREAT
|O_EXCL
, $perm) ||
900 die "unable to create output file '$filename' - $!\n";
901 chown $wwwid, -1, $outfh;
906 sub upid_read_status
{
909 my ($task, $filename) = upid_decode
($upid);
910 my $fh = IO
::File-
>new($filename, "r");
911 return "unable to open file - $!" if !$fh;
913 sysseek($fh, -$maxlen, 2);
915 my $br = sysread($fh, $readbuf, $maxlen);
918 return "unable to extract last line"
919 if $readbuf !~ m/\n?(.+)$/;
921 if ($line =~ m/^TASK OK$/) {
923 } elsif ($line =~ m/^TASK ERROR: (.+)$/) {
926 return "unexpected status";
929 return "unable to read tail (got $br bytes)";
932 # useful functions to store comments in config files
936 # all control and hi-bit characters, and ':'
937 my $unsafe = "^\x20-\x39\x3b-\x7e";
938 return uri_escape
(Encode
::encode
("utf8", $text), $unsafe);
944 return Encode
::decode
("utf8", uri_unescape
($data));
947 sub decode_utf8_parameters
{
950 foreach my $p (qw(comment description firstname lastname)) {
951 $param->{$p} = decode
('utf8', $param->{$p}) if $param->{$p};
957 sub random_ether_addr
{
959 my ($seconds, $microseconds) = gettimeofday
;
961 my $rand = Digest
::SHA
::sha1_hex
($$, rand(), $seconds, $microseconds);
963 # clear multicast, set local id
964 vec($rand, 0, 8) = (vec($rand, 0, 8) & 0xfe) | 2;
966 return sprintf("%02X:%02X:%02X:%02X:%02X:%02X", unpack("C6", $rand));
972 return String
::ShellQuote
::shell_quote
($str);
978 die "no arguments" if !$cmd;
980 return $cmd if !ref($cmd);
983 foreach my $arg (@$cmd) { push @qa, shellquote
($arg); }
985 return join (' ', @qa);
988 # split an shell argument string into an array,
992 return $str ?
[ Text
::ParseWords
::shellwords
($str) ] : [];
996 my ($filename, $start, $limit, $filter) = @_;
1001 my $fh = IO
::File-
>new($filename, "r");
1004 push @$lines, { n
=> $count, t
=> "unable to open file - $!"};
1005 return ($count, $lines);
1008 $start = 0 if !$start;
1009 $limit = 50 if !$limit;
1014 # duplicate code, so that we do not slow down normal path
1015 while (defined($line = <$fh>)) {
1016 next if $line !~ m/$filter/;
1017 next if $count++ < $start;
1018 next if $limit <= 0;
1020 push @$lines, { n
=> $count, t
=> $line};
1024 while (defined($line = <$fh>)) {
1025 next if $count++ < $start;
1026 next if $limit <= 0;
1028 push @$lines, { n
=> $count, t
=> $line};
1035 # HACK: ExtJS store.guaranteeRange() does not like empty array
1039 push @$lines, { n
=> $count, t
=> "no content"};
1042 return ($count, $lines);
1046 my ($start, $limit, $filter) = @_;
1051 $start = 0 if !$start;
1052 $limit = 50 if !$limit;
1057 return if $count++ < $start;
1058 return if $limit <= 0;
1059 push @$lines, { n
=> int($count), t
=> $line};
1063 my $cmd = ['journalctl', '-o', 'short', '--no-pager'];
1064 run_command
($cmd, outfunc
=> $parser);
1066 # HACK: ExtJS store.guaranteeRange() does not like empty array
1070 push @$lines, { n
=> $count, t
=> "no content"};
1073 return ($count, $lines);
1076 sub dir_glob_regex
{
1077 my ($dir, $regex) = @_;
1079 my $dh = IO
::Dir-
>new ($dir);
1080 return wantarray ?
() : undef if !$dh;
1082 while (defined(my $tmp = $dh->read)) {
1083 if (my @res = $tmp =~ m/^($regex)$/) {
1085 return wantarray ?
@res : $tmp;
1090 return wantarray ?
() : undef;
1093 sub dir_glob_foreach
{
1094 my ($dir, $regex, $func) = @_;
1096 my $dh = IO
::Dir-
>new ($dir);
1098 while (defined(my $tmp = $dh->read)) {
1099 if (my @res = $tmp =~ m/^($regex)$/) {
1106 sub assert_if_modified
{
1107 my ($digest1, $digest2) = @_;
1109 if ($digest1 && $digest2 && ($digest1 ne $digest2)) {
1110 die "detected modified configuration - file changed by other user? Try again.\n";
1114 # Digest for short strings
1115 # like FNV32a, but we only return 31 bits (positive numbers)
1119 my $hval = 0x811c9dc5;
1121 foreach my $c (unpack('C*', $string)) {
1129 $hval = $hval & 0xffffffff;
1131 return $hval & 0x7fffffff;
1134 sub fnv31a_hex
{ return sprintf("%X", fnv31a
(@_)); }
1136 sub unpack_sockaddr_in46
{
1138 my $family = Socket
::sockaddr_family
($sin);
1139 my ($port, $host) = ($family == AF_INET6 ? Socket
::unpack_sockaddr_in6
($sin)
1140 : Socket
::unpack_sockaddr_in
($sin));
1141 return ($family, $port, $host);
1144 sub getaddrinfo_all
{
1145 my ($hostname, @opts) = @_;
1146 my %hints = ( flags
=> AI_V4MAPPED
| AI_ALL
,
1148 my ($err, @res) = Socket
::getaddrinfo
($hostname, '0', \
%hints);
1149 die "failed to get address info for: $hostname: $err\n" if $err;
1153 sub get_host_address_family
{
1154 my ($hostname, $socktype) = @_;
1155 my @res = getaddrinfo_all
($hostname, socktype
=> $socktype);
1156 return $res[0]->{family
};
1159 # Parses any sane kind of host, or host+port pair:
1160 # The port is always optional and thus may be undef.
1161 sub parse_host_and_port
{
1163 if ($address =~ /^($IPV4RE|[[:alnum:]\-.]+)(?::(\d+))?$/ || # ipv4 or host with optional ':port'
1164 $address =~ /^\[($IPV6RE|$IPV4RE|[[:alnum:]\-.]+)\](?::(\d+))?$/ || # anything in brackets with optional ':port'
1165 $address =~ /^($IPV6RE)(?:\.(\d+))?$/) # ipv6 with optional port separated by dot
1167 return ($1, $2, 1); # end with 1 to support simple if(parse...) tests
1174 syscall 272, $flags;