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INotify.pm: add methods for reading/writing /etc/hosts

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Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
This commit is contained in:
Dominik Csapak 2018-09-12 10:24:11 +02:00 committed by Dietmar Maurer
parent 69758574a1
commit 9194ee0657
1 changed files with 49 additions and 0 deletions
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49
src/PVE/INotify.pm
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@ -20,6 +20,7 @@ use Clone qw(clone);
use Linux::Inotify2;
use base 'Exporter';
use JSON;
use Digest::SHA;
use Encode qw(encode decode);
our @EXPORT_OK = qw(read_file write_file register_file);
@ -537,6 +538,54 @@ register_file('hostname', "/etc/hostname",
\&read_etc_hostname,
\&write_etc_hostname);
sub read_etc_hosts {
my ($filename, $fh) = @_;
my $raw = '';
my $data = '';
while (my $line = <$fh>) {
$raw .= $line;
if ($line =~ m/^\s*#/) {
$line = decode('UTF-8', $line);
}
$data .= $line;
}
return {
digest => Digest::SHA::sha1_hex($raw),
data => $data,
}
}
sub write_etc_hosts {
my ($filename, $fh, $hosts, @args) = @_;
# check validity of ips/names
for my $line (split("\n", $hosts)) {
next if $line =~ m/^\s*#/; # comments
next if $line =~ m/^\s*$/; # whitespace/empty lines
my ($ip, @names) = split(/\s+/, $line);
raise_param_exc({ 'data' => "Invalid IP '$ip'" })
if $ip !~ m/^$PVE::Tools::IPRE$/;
for my $name (@names) {
raise_param_exc({ 'data' => "Invalid Hostname '$name'" })
if $name !~ m/^[.\-a-zA-Z0-9]+$/;
}
}
die "write failed: $!" if !print $fh encode('UTF-8', $hosts);
return $hosts;
}
register_file('etchosts', "/etc/hosts",
\&read_etc_hosts,
\&write_etc_hosts);
sub read_etc_resolv_conf {
my ($filename, $fh) = @_;