use strict;
use warnings;
-use POSIX qw(EINTR);
+use POSIX qw(EINTR EEXIST EOPNOTSUPP);
use IO::Socket::IP;
use Socket qw(AF_INET AF_INET6 AI_ALL AI_V4MAPPED);
use IO::Select;
use IO::Pipe;
use IO::File;
use IO::Dir;
+use IO::Handle;
use IPC::Open3;
use Fcntl qw(:DEFAULT :flock);
use base 'Exporter';
use Text::ParseWords;
use String::ShellQuote;
use Time::HiRes qw(usleep gettimeofday tv_interval alarm);
+use Net::DBus qw(dbus_uint32 dbus_uint64);
+use Net::DBus::Callback;
+use Net::DBus::Reactor;
# avoid warning when parsing long hex values with hex()
no warnings 'portable'; # Support for 64-bit ints required
trim
extract_param
file_copy
+O_PATH
+O_TMPFILE
);
my $pvelogdir = "/var/log/pve";
CLONE_NEWPID => 0x20000000,
CLONE_NEWNET => 0x40000000};
-use constant O_PATH => 0x00200000;
+use constant {O_PATH => 0x00200000,
+ O_TMPFILE => 0x00410000}; # This includes O_DIRECTORY
sub run_with_timeout {
my ($timeout, $code, @param) = @_;
my $tmpname = "$filename.tmp.$$";
eval {
- my $fh = IO::File->new($tmpname, O_WRONLY|O_CREAT, $perm);
+ my ($fh, $tries) = (undef, 0);
+ while (!$fh && $tries++ < 3) {
+ $fh = IO::File->new($tmpname, O_WRONLY|O_CREAT|O_EXCL, $perm);
+ if (!$fh && $! == EEXIST) {
+ unlink($tmpname) or die "unable to delete old temp file: $!\n";
+ }
+ }
die "unable to open file '$tmpname' - $!\n" if !$fh;
die "unable to write '$tmpname' - $!\n" unless print $fh $data;
die "closing file '$tmpname' failed - $!\n" unless close $fh;
my $fh = IO::File->new($filename, "r") ||
die "can't open '$filename' - $!\n";
- my $content = safe_read_from($fh, $max);
+ my $content = safe_read_from($fh, $max, 0, $filename);
close $fh;
}
sub safe_read_from {
- my ($fh, $max, $oneline) = @_;
+ my ($fh, $max, $oneline, $filename) = @_;
$max = 32768 if !$max;
+ my $subject = defined($filename) ? "file '$filename'" : 'input';
+
my $br = 0;
my $input = '';
my $count;
while ($count = sysread($fh, $input, 8192, $br)) {
$br += $count;
- die "input too long - aborting\n" if $br > $max;
+ die "$subject too long - aborting\n" if $br > $max;
if ($oneline && $input =~ m/^(.*)\n/) {
$input = $1;
last;
}
}
- die "unable to read input - $!\n" if !defined($count);
+ die "unable to read $subject - $!\n" if !defined($count);
return $input;
}
$cmdstr .= $pipe . join(' ', map { ref($_) ? $$_ : shellquote($_) } @$command);
$pipe = ' | ';
}
- $cmd = [ '/bin/bash', '-c', "set -o pipefail && $cmdstr" ];
+ $cmd = [ '/bin/bash', '-c', "$cmdstr" ];
} else {
$cmdstr = cmd2string($cmd);
}
};
my $kvmkeymaparray = [];
-foreach my $lc (keys %$keymaphash) {
+foreach my $lc (sort keys %$keymaphash) {
push @$kvmkeymaparray, $keymaphash->{$lc}->[1];
}
$pipe->reader();
my $readvalues = sub {
- $res->{total} = int(<$pipe>);
- $res->{used} = int(<$pipe>);
- $res->{avail} = int(<$pipe>);
+ $res->{total} = int((<$pipe> =~ /^(\d*)$/)[0]);
+ $res->{used} = int((<$pipe> =~ /^(\d*)$/)[0]);
+ $res->{avail} = int((<$pipe> =~ /^(\d*)$/)[0]);
};
eval {
run_with_timeout($timeout, $readvalues);
}
sub random_ether_addr {
+ my ($prefix) = @_;
my ($seconds, $microseconds) = gettimeofday;
- my $rand = Digest::SHA::sha1_hex($$, rand(), $seconds, $microseconds);
+ my $rand = Digest::SHA::sha1($$, rand(), $seconds, $microseconds);
# clear multicast, set local id
vec($rand, 0, 8) = (vec($rand, 0, 8) & 0xfe) | 2;
- return sprintf("%02X:%02X:%02X:%02X:%02X:%02X", unpack("C6", $rand));
+ my $addr = sprintf("%02X:%02X:%02X:%02X:%02X:%02X", unpack("C6", $rand));
+ if (defined($prefix)) {
+ $addr = uc($prefix) . substr($addr, length($prefix));
+ }
+ return $addr;
}
sub shellquote {
return $result;
}
+# support sending multi-part mail messages with a text and or a HTML part
+# mailto may be a single email string or an array of receivers
+sub sendmail {
+ my ($mailto, $subject, $text, $html, $mailfrom, $author) = @_;
+ my $mail_re = qr/[^-a-zA-Z0-9+._@]/;
+
+ $mailto = [ $mailto ] if !ref($mailto);
+
+ foreach (@$mailto) {
+ die "illegal character in mailto address\n"
+ if ($_ =~ $mail_re);
+ }
+
+ my $rcvrtxt = join (', ', @$mailto);
+
+ $mailfrom = $mailfrom || "root";
+ die "illegal character in mailfrom address\n"
+ if $mailfrom =~ $mail_re;
+
+ $author = $author || 'Proxmox VE';
+
+ open (MAIL, "|-", "sendmail", "-B", "8BITMIME", "-f", $mailfrom, @$mailto) ||
+ die "unable to open 'sendmail' - $!";
+
+ # multipart spec see https://www.ietf.org/rfc/rfc1521.txt
+ my $boundary = "----_=_NextPart_001_".int(time).$$;
+
+ print MAIL "Content-Type: multipart/alternative;\n";
+ print MAIL "\tboundary=\"$boundary\"\n";
+ print MAIL "MIME-Version: 1.0\n";
+
+ print MAIL "FROM: $author <$mailfrom>\n";
+ print MAIL "TO: $rcvrtxt\n";
+ print MAIL "SUBJECT: $subject\n";
+ print MAIL "\n";
+ print MAIL "This is a multi-part message in MIME format.\n\n";
+ print MAIL "--$boundary\n";
+
+ if (defined($text)) {
+ print MAIL "Content-Type: text/plain;\n";
+ print MAIL "\tcharset=\"UTF8\"\n";
+ print MAIL "Content-Transfer-Encoding: 8bit\n";
+ print MAIL "\n";
+
+ # avoid 'remove extra line breaks' issue (MS Outlook)
+ my $fill = ' ';
+ $text =~ s/^/$fill/gm;
+
+ print MAIL $text;
+
+ print MAIL "\n--$boundary\n";
+ }
+
+ if (defined($html)) {
+ print MAIL "Content-Type: text/html;\n";
+ print MAIL "\tcharset=\"UTF8\"\n";
+ print MAIL "Content-Transfer-Encoding: 8bit\n";
+ print MAIL "\n";
+
+ print MAIL $html;
+
+ print MAIL "\n--$boundary--\n";
+ }
+
+ close(MAIL);
+}
+
+sub tempfile {
+ my ($perm, %opts) = @_;
+
+ # default permissions are stricter than with file_set_contents
+ $perm = 0600 if !defined($perm);
+
+ my $dir = $opts{dir} // '/run';
+ my $mode = $opts{mode} // O_RDWR;
+ $mode |= O_EXCL if !$opts{allow_links};
+
+ my $fh = IO::File->new($dir, $mode | O_TMPFILE, $perm);
+ if (!$fh && $! == EOPNOTSUPP) {
+ $dir = '/tmp' if !defined($opts{dir});
+ $dir .= "/.tmpfile.$$";
+ $fh = IO::File->new($dir, $mode | O_CREAT | O_EXCL, $perm);
+ unlink($dir) if $fh;
+ }
+ die "failed to create tempfile: $!\n" if !$fh;
+ return $fh;
+}
+
+sub tempfile_contents {
+ my ($data, $perm, %opts) = @_;
+
+ my $fh = tempfile($perm, %opts);
+ eval {
+ die "unable to write to tempfile: $!\n" if !print {$fh} $data;
+ die "unable to flush to tempfile: $!\n" if !defined($fh->flush());
+ };
+ if (my $err = $@) {
+ close $fh;
+ die $err;
+ }
+
+ return ("/proc/$$/fd/".$fh->fileno, $fh);
+}
+
+sub validate_ssh_public_keys {
+ my ($raw) = @_;
+ my @lines = split(/\n/, $raw);
+
+ foreach my $line (@lines) {
+ next if $line =~ m/^\s*$/;
+ eval {
+ my ($filename, $handle) = tempfile_contents($line);
+ run_command(["ssh-keygen", "-l", "-f", $filename],
+ outfunc => sub {}, errfunc => sub {});
+ };
+ die "SSH public key validation error\n" if $@;
+ }
+}
+
+sub openat($$$;$) {
+ my ($dirfd, $pathname, $flags, $mode) = @_;
+ my $fd = syscall(257, $dirfd, $pathname, $flags, $mode//0);
+ return undef if $fd < 0;
+ # sysopen() doesn't deal with numeric file descriptors apparently
+ # so we need to convert to a mode string for IO::Handle->new_from_fd
+ my $flagstr = ($flags & O_RDWR) ? 'rw' : ($flags & O_WRONLY) ? 'w' : 'r';
+ my $handle = IO::Handle->new_from_fd($fd, $flagstr);
+ return $handle if $handle;
+ my $err = $!; # save error before closing the raw fd
+ syscall(3, $fd); # close
+ $! = $err;
+ return undef;
+}
+
+sub mkdirat($$$) {
+ my ($dirfd, $name, $mode) = @_;
+ return syscall(258, $dirfd, $name, $mode) == 0;
+}
+
+# NOTE: This calls the dbus main loop and must not be used when another dbus
+# main loop is being used as we need to wait for the JobRemoved signal.
+# Polling the job status instead doesn't work because this doesn't give us the
+# distinction between success and failure.
+#
+# Note that the description is mandatory for security reasons.
+sub enter_systemd_scope {
+ my ($unit, $description, %extra) = @_;
+ die "missing description\n" if !defined($description);
+
+ my $timeout = delete $extra{timeout};
+
+ $unit .= '.scope';
+ my $properties = [ [PIDs => [dbus_uint32($$)]] ];
+
+ foreach my $key (keys %extra) {
+ if ($key eq 'Slice' || $key eq 'KillMode') {
+ push @$properties, [$key, $extra{$key}];
+ } elsif ($key eq 'CPUShares') {
+ push @$properties, [$key, dbus_uint64($extra{$key})];
+ } elsif ($key eq 'CPUQuota') {
+ push @$properties, ['CPUQuotaPerSecUSec',
+ dbus_uint64($extra{$key} * 10000)];
+ } else {
+ die "Don't know how to encode $key for systemd scope\n";
+ }
+ }
+
+ my $job;
+ my $done = 0;
+
+ my $bus = Net::DBus->system();
+ my $reactor = Net::DBus::Reactor->main();
+
+ my $service = $bus->get_service('org.freedesktop.systemd1');
+ my $if = $service->get_object('/org/freedesktop/systemd1', 'org.freedesktop.systemd1.Manager');
+ # Connect to the JobRemoved signal since we want to wait for it to finish
+ my $sigid;
+ my $timer;
+ my $cleanup = sub {
+ my ($no_shutdown) = @_;
+ $if->disconnect_from_signal('JobRemoved', $sigid) if defined($if);
+ $if = undef;
+ $sigid = undef;
+ $reactor->remove_timeout($timer) if defined($timer);
+ $timer = undef;
+ return if $no_shutdown;
+ $reactor->shutdown();
+ };
+
+ $sigid = $if->connect_to_signal('JobRemoved', sub {
+ my ($id, $removed_job, $signaled_unit, $result) = @_;
+ return if $signaled_unit ne $unit || $removed_job ne $job;
+ $cleanup->(0);
+ die "systemd job failed\n" if $result ne 'done';
+ $done = 1;
+ });
+
+ my $on_timeout = sub {
+ $cleanup->(0);
+ die "systemd job timed out\n";
+ };
+
+ $timer = $reactor->add_timeout($timeout * 1000, Net::DBus::Callback->new(method => $on_timeout))
+ if defined($timeout);
+ $job = $if->StartTransientUnit($unit, 'fail', $properties, []);
+ $reactor->run();
+ $cleanup->(1);
+ die "systemd job never completed\n" if !$done;
+}
+
1;
projects / pve-common.git / blobdiff