use strict;
use warnings;
-use POSIX qw(EINTR EEXIST EOPNOTSUPP);
-use IO::Socket::IP;
-use Socket qw(AF_INET AF_INET6 AI_ALL AI_V4MAPPED AI_CANONNAME SOCK_DGRAM
- IPPROTO_TCP);
-use IO::Select;
+
+use Date::Format qw(time2str);
+use Digest::MD5;
+use Digest::SHA;
+use Encode;
+use Fcntl qw(:DEFAULT :flock);
use File::Basename;
use File::Path qw(make_path);
use Filesys::Df (); # don't overwrite our df()
-use IO::Pipe;
-use IO::File;
use IO::Dir;
+use IO::File;
use IO::Handle;
+use IO::Pipe;
+use IO::Select;
+use IO::Socket::IP;
use IPC::Open3;
-use Fcntl qw(:DEFAULT :flock);
-use base 'Exporter';
-use URI::Escape;
-use Encode;
-use Digest::SHA;
use JSON;
-use Text::ParseWords;
+use POSIX qw(EINTR EEXIST EOPNOTSUPP);
+use Scalar::Util 'weaken';
+use Socket qw(AF_INET AF_INET6 AI_ALL AI_V4MAPPED AI_CANONNAME SOCK_DGRAM IPPROTO_TCP);
use String::ShellQuote;
+use Text::ParseWords;
use Time::HiRes qw(usleep gettimeofday tv_interval alarm);
-use Scalar::Util 'weaken';
+use URI::Escape;
+use base 'Exporter';
+
use PVE::Syscall;
# avoid warning when parsing long hex values with hex()
safe_print
trim
extract_param
+extract_sensitive_params
file_copy
get_host_arch
O_PATH
our $IPRE = "(?:$IPV4RE|$IPV6RE)";
+our $EMAIL_USER_RE = qr/[\w\+\-\~]+(\.[\w\+\-\~]+)*/;
+our $EMAIL_RE = qr/$EMAIL_USER_RE@[a-zA-Z0-9\-]+(\.[a-zA-Z0-9\-]+)*/;
+
use constant {CLONE_NEWNS => 0x00020000,
CLONE_NEWUTS => 0x04000000,
CLONE_NEWIPC => 0x08000000,
CLONE_NEWNET => 0x40000000};
use constant {O_PATH => 0x00200000,
+ O_CLOEXEC => 0x00080000,
O_TMPFILE => 0x00410000}; # This includes O_DIRECTORY
use constant {AT_EMPTY_PATH => 0x1000,
AT_FDCWD => -100};
+# from <linux/fs.h>
+use constant {RENAME_NOREPLACE => (1 << 0),
+ RENAME_EXCHANGE => (1 << 1),
+ RENAME_WHITEOUT => (1 << 2)};
+
sub run_with_timeout {
my ($timeout, $code, @param) = @_;
my ($fh, $max, $oneline, $filename) = @_;
# pmxcfs file size limit
- $max = 512*1024 if !$max;
+ $max = 1024 * 1024 if !$max;
my $subject = defined($filename) ? "file '$filename'" : 'input';
$pid = open3($writer, $reader, $error, @$cmd) || die $!;
- # if we pipe fron STDIN, open3 closes STDIN, so we we
- # a perl warning "Filehandle STDIN reopened as GENXYZ .. "
- # as soon as we open a new file.
+ # if we pipe fron STDIN, open3 closes STDIN, so we get a perl warning like
+ # "Filehandle STDIN reopened as GENXYZ .. " as soon as we open a new file.
# to avoid that we open /dev/null
if (!ref($writer) && !defined(fileno(STDIN))) {
POSIX::close(0);
- open(STDIN, "</dev/null");
+ open(STDIN, '<', '/dev/null');
}
};
close $writer;
}
- my $select = new IO::Select;
+ my $select = IO::Select->new();
$select->add($reader) if ref($reader);
$select->add($error);
if ($h eq $reader) {
if ($outfunc || $logfunc) {
eval {
- $outlog .= $buf;
- while ($outlog =~ s/^([^\010\r\n]*)(\r|\n|(\010)+|\r\n)//s) {
- my $line = $1;
+ while ($buf =~ s/^([^\010\r\n]*)(?:\n|(?:\010)+|\r\n?)//) {
+ my $line = $outlog . $1;
+ $outlog = '';
&$outfunc($line) if $outfunc;
&$logfunc($line) if $logfunc;
}
+ $outlog .= $buf;
};
my $err = $@;
if ($err) {
} elsif ($h eq $error) {
if ($errfunc || $logfunc) {
eval {
- $errlog .= $buf;
- while ($errlog =~ s/^([^\010\r\n]*)(\r|\n|(\010)+|\r\n)//s) {
- my $line = $1;
+ while ($buf =~ s/^([^\010\r\n]*)(?:\n|(?:\010)+|\r\n?)//) {
+ my $line = $errlog . $1;
+ $errlog = '';
&$errfunc($line) if $errfunc;
&$logfunc($line) if $logfunc;
}
+ $errlog .= $buf;
};
my $err = $@;
if ($err) {
return $res;
}
+# For extracting sensitive keys (e.g. password), to avoid writing them to www-data owned configs
+sub extract_sensitive_params :prototype($$$) {
+ my ($param, $sensitive_list, $delete_list) = @_;
+
+ my %delete = map { $_ => 1 } ($delete_list || [])->@*;
+
+ my $sensitive = {};
+ for my $opt (@$sensitive_list) {
+ # handle deletions as explicitly setting `undef`, so subs which only have $param but not
+ # $delete_list available can recognize them. Afterwards new values may override.
+ if (exists($delete{$opt})) {
+ $sensitive->{$opt} = undef;
+ }
+
+ if (defined(my $value = extract_param($param, $opt))) {
+ $sensitive->{$opt} = $value;
+ }
+ }
+
+ return $sensitive;
+}
+
# Note: we use this to wait until vncterm/spiceterm is ready
sub wait_for_vnc_port {
my ($port, $family, $timeout) = @_;
return 'OK';
} elsif ($line =~ m/^TASK ERROR: (.+)$/) {
return $1;
+ } elsif ($line =~ m/^TASK (WARNINGS: \d+)$/) {
+ return $1;
} else {
return "unexpected status";
}
return "unable to read tail (got $br bytes)";
}
+# Check if the status returned by upid_read_status is an error status.
+# If the status could not be parsed it's also treated as an error.
+sub upid_status_is_error {
+ my ($status) = @_;
+
+ return !($status eq 'OK' || $status =~ m/^WARNINGS: \d+$/);
+}
+
+# takes the parsed status and returns the type, either ok, warning, error or unknown
+sub upid_normalize_status_type {
+ my ($status) = @_;
+
+ if (!$status) {
+ return 'unknown';
+ } elsif ($status eq 'OK') {
+ return 'ok';
+ } elsif ($status =~ m/^WARNINGS: \d+$/) {
+ return 'warning';
+ } elsif ($status eq 'unexpected status') {
+ return 'unknown';
+ } else {
+ return 'error';
+ }
+}
+
# useful functions to store comments in config files
sub encode_text {
my ($text) = @_;
sub getaddrinfo_all {
my ($hostname, @opts) = @_;
- my %hints = ( flags => AI_V4MAPPED | AI_ALL,
- @opts );
+ my %hints = (
+ flags => AI_V4MAPPED | AI_ALL,
+ @opts,
+ );
my ($err, @res) = Socket::getaddrinfo($hostname, '0', \%hints);
die "failed to get address info for: $hostname: $err\n" if $err;
return @res;
return 0 == syscall(PVE::Syscall::fsync, $fileno);
}
+sub renameat2($$$$$) {
+ my ($olddirfd, $oldpath, $newdirfd, $newpath, $flags) = @_;
+ return 0 == syscall(PVE::Syscall::renameat2, $olddirfd, $oldpath, $newdirfd, $newpath, $flags);
+}
+
sub sync_mountpoint {
my ($path) = @_;
- sysopen my $fd, $path, O_PATH or die "failed to open $path: $!\n";
- my $result = syncfs(fileno($fd));
+ sysopen my $fd, $path, O_RDONLY|O_CLOEXEC or die "failed to open $path: $!\n";
+ my $syncfs_err;
+ if (!syncfs(fileno($fd))) {
+ $syncfs_err = "$!";
+ }
close($fd);
- return $result;
+ die "syncfs '$path' failed - $syncfs_err\n" if defined $syncfs_err;
+}
+
+my sub check_mail_addr {
+ my ($addr) = @_;
+ die "'$addr' does not look like a valid email address or username\n"
+ if $addr !~ /^$EMAIL_RE$/ && $addr !~ /^$EMAIL_USER_RE$/;
}
# support sending multi-part mail messages with a text and or a HTML part
# mailto may be a single email string or an array of receivers
sub sendmail {
my ($mailto, $subject, $text, $html, $mailfrom, $author) = @_;
- my $mail_re = qr/[^-a-zA-Z0-9+._@]/;
$mailto = [ $mailto ] if !ref($mailto);
- foreach (@$mailto) {
- die "illegal character in mailto address\n"
- if ($_ =~ $mail_re);
- }
-
- my $rcvrtxt = join (', ', @$mailto);
+ check_mail_addr($_) for $mailto->@*;
+ my $to_quoted = [ map { shellquote($_) } $mailto->@* ];
$mailfrom = $mailfrom || "root";
- die "illegal character in mailfrom address\n"
- if $mailfrom =~ $mail_re;
+ check_mail_addr($mailfrom);
+ my $from_quoted = shellquote($mailfrom);
- $author = $author || 'Proxmox VE';
+ $author = $author // 'Proxmox VE';
- open (MAIL, "|-", "sendmail", "-B", "8BITMIME", "-f", $mailfrom, "--", @$mailto) ||
- die "unable to open 'sendmail' - $!";
+ open (my $mail, "|-", "sendmail", "-B", "8BITMIME", "-f", $from_quoted, "--", $to_quoted->@*)
+ or die "unable to open 'sendmail' - $!";
- # multipart spec see https://www.ietf.org/rfc/rfc1521.txt
- my $boundary = "----_=_NextPart_001_".int(time).$$;
+ my $is_multipart = $text && $html;
+ my $boundary = "----_=_NextPart_001_" . int(time()) . $$; # multipart spec, see rfc 1521
- print MAIL "Content-Type: multipart/alternative;\n";
- print MAIL "\tboundary=\"$boundary\"\n";
- print MAIL "MIME-Version: 1.0\n";
+ $subject = Encode::encode('MIME-Header', $subject) if $subject =~ /[^[:ascii:]]/;
- 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";
+ print $mail "MIME-Version: 1.0\n" if $subject =~ /[^[:ascii:]]/ || $is_multipart;
+
+ print $mail "From: $author <$mailfrom>\n";
+ print $mail "To: " . join(', ', @$mailto) ."\n";
+ print $mail "Date: " . time2str('%a, %d %b %Y %H:%M:%S %z', time()) . "\n";
+ print $mail "Subject: $subject\n";
+
+ if ($is_multipart) {
+ print $mail "Content-Type: multipart/alternative;\n";
+ print $mail "\tboundary=\"$boundary\"\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";
+ print $mail "Content-Type: text/plain;\n";
+ print $mail "\tcharset=\"UTF-8\"\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 $text;
- print MAIL "\n--$boundary\n";
+ print $mail "\n--$boundary\n" if $is_multipart;
}
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 "Content-Type: text/html;\n";
+ print $mail "\tcharset=\"UTF-8\"\n";
+ print $mail "Content-Transfer-Encoding: 8bit\n";
+ print $mail "\n";
- print MAIL $html;
+ print $mail $html;
- print MAIL "\n--$boundary--\n";
+ print $mail "\n--$boundary--\n" if $is_multipart;
}
- close(MAIL);
+ close($mail);
}
+# creates a temporary file that does not shows up on the file system hierarchy.
+#
+# Uses O_TMPFILE if available, which makes it just an anon inode that never shows up in the FS.
+# If O_TMPFILE is not available, which unlikely nowadays (added in 3.11 kernel and all FS relevant
+# for us support it) back to open-create + immediate unlink while still holding the file handle.
+#
+# TODO: to avoid FS dependent features we could (transparently) switch to memfd_create as backend
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 $dir = $opts{dir};
+ if (!$dir) {
+ if (-d "/run/user/$<") {
+ $dir = "/run/user/$<";
+ } elsif ($< == 0) {
+ $dir = "/run";
+ } else {
+ $dir = "/tmp";
+ }
+ }
my $mode = $opts{mode} // O_RDWR;
$mode |= O_EXCL if !$opts{allow_links};
return $fh;
}
+# create an (ideally) anon file with the $data as content and return its FD-path and FH
sub tempfile_contents {
my ($data, $perm, %opts) = @_;
);
}
+# size is optional and defaults to 256, note that xattr limits are FS specific and that xattrs can
+# get arbitrary long. pass `0` for $size in array context to get the actual size of a value
+sub getxattr($$;$) {
+ my ($path_or_handle, $name, $size) = @_;
+ $size //= 256;
+ my $buf = pack("x${size}");
+
+ my $xattr_size = -1; # the actual size of the xattr, can be zero
+ if (defined(my $fd = fileno($path_or_handle))) {
+ $xattr_size = syscall(&PVE::Syscall::fgetxattr, $fd, $name, $buf, $size);
+ } else {
+ $xattr_size = syscall(&PVE::Syscall::getxattr, $path_or_handle, $name, $buf, $size);
+ }
+ if ($xattr_size < 0) {
+ return undef;
+ }
+ return wantarray ? ($buf, $xattr_size) : $buf;
+}
+
+# NOTE: can take either a path or an open file handle, i.e., its multiplexing setxattr and fsetxattr
+sub setxattr($$$;$) {
+ my ($path_or_handle, $name, $value, $flags) = @_;
+ my $size = length($value); # NOTE: seems to get correct length also for wide-characters in text..
+
+ if (defined(my $fd = fileno($path_or_handle))) {
+ return 0 == syscall(&PVE::Syscall::fsetxattr, $fd, $name, $value, $size, $flags // 0);
+ } else {
+ return 0 == syscall(&PVE::Syscall::setxattr, $path_or_handle, $name, $value, $size, $flags // 0);
+ }
+}
+
sub safe_compare {
my ($left, $right, $cmp) = @_;
return $cmp->($left, $right);
}
+
+# opts is a hash ref with the following known properties
+# allow_overwrite - if 1, overwriting existing files is allowed, use with care. Default to false
+# hash_required - if 1, at least one checksum has to be specified otherwise an error will be thrown
+# http_proxy
+# https_proxy
+# verify_certificates - if 0 (false) we tell wget to ignore untrusted TLS certs. Default to true
+# md5sum|sha(1|224|256|384|512)sum - the respective expected checksum string
+sub download_file_from_url {
+ my ($dest, $url, $opts) = @_;
+
+ my ($checksum_algorithm, $checksum_expected);
+ for ('sha512', 'sha384', 'sha256', 'sha224', 'sha1', 'md5') {
+ if (defined($opts->{"${_}sum"})) {
+ $checksum_algorithm = $_;
+ $checksum_expected = $opts->{"${_}sum"};
+ last;
+ }
+ }
+ die "checksum required but not specified\n" if ($opts->{hash_required} && !$checksum_algorithm);
+
+ print "downloading $url to $dest\n";
+
+ if (-f $dest) {
+ if ($checksum_algorithm) {
+ print "calculating checksum of existing file...";
+ my $checksum_got = get_file_hash($checksum_algorithm, $dest);
+
+ if (lc($checksum_got) eq lc($checksum_expected)) {
+ print "OK, got correct file already, no need to download\n";
+ return;
+ } elsif ($opts->{allow_overwrite}) {
+ print "checksum mismatch: got '$checksum_got' != expect '$checksum_expected', re-download\n";
+ } else {
+ print "\n"; # the front end expects the error to reside at the last line without any noise
+ die "checksum mismatch: got '$checksum_got' != expect '$checksum_expected', aborting\n";
+ }
+ } elsif (!$opts->{allow_overwrite}) {
+ die "refusing to override existing file '$dest'\n";
+ }
+ }
+
+ my $tmpdest = "$dest.tmp.$$";
+ eval {
+ local $SIG{INT} = sub {
+ unlink $tmpdest or warn "could not cleanup temporary file: $!";
+ die "got interrupted by signal\n";
+ };
+
+ { # limit the scope of the ENV change
+ local %ENV;
+ if ($opts->{http_proxy}) {
+ $ENV{http_proxy} = $opts->{http_proxy};
+ }
+ if ($opts->{https_proxy}) {
+ $ENV{https_proxy} = $opts->{https_proxy};
+ }
+
+ my $cmd = ['wget', '--progress=dot:giga', '-O', $tmpdest, $url];
+
+ if (!($opts->{verify_certificates} // 1)) { # default to true
+ push @$cmd, '--no-check-certificate';
+ }
+
+ run_command($cmd, errmsg => "download failed");
+ }
+
+ if ($checksum_algorithm) {
+ print "calculating checksum...";
+
+ my $checksum_got = get_file_hash($checksum_algorithm, $tmpdest);
+
+ if (lc($checksum_got) eq lc($checksum_expected)) {
+ print "OK, checksum verified\n";
+ } else {
+ print "\n"; # the front end expects the error to reside at the last line without any noise
+ die "checksum mismatch: got '$checksum_got' != expect '$checksum_expected'\n";
+ }
+ }
+
+ rename($tmpdest, $dest) or die "unable to rename temporary file: $!\n";
+ };
+ if (my $err = $@) {
+ unlink $tmpdest or warn "could not cleanup temporary file: $!";
+ die $err;
+ }
+
+ print "download of '$url' to '$dest' finished\n";
+}
+
+sub get_file_hash {
+ my ($algorithm, $filename) = @_;
+
+ my $algorithm_map = {
+ 'md5' => sub { Digest::MD5->new },
+ 'sha1' => sub { Digest::SHA->new(1) },
+ 'sha224' => sub { Digest::SHA->new(224) },
+ 'sha256' => sub { Digest::SHA->new(256) },
+ 'sha384' => sub { Digest::SHA->new(384) },
+ 'sha512' => sub { Digest::SHA->new(512) },
+ };
+
+ my $digester = $algorithm_map->{$algorithm}->() or die "unknown algorithm '$algorithm'\n";
+
+ open(my $fh, '<', $filename) or die "unable to open '$filename': $!\n";
+ binmode($fh);
+
+ my $digest = $digester->addfile($fh)->hexdigest;
+
+ return lc($digest);
+}
+
1;
projects / pve-common.git / blobdiff