/usr/share/perl5/Debconf/DbDriver/Directory.pm is in debconf 1.5.66.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | #!/usr/bin/perl -w
# This file was preprocessed, do not edit!
package Debconf::DbDriver::Directory;
use strict;
use Debconf::Log qw(:all);
use IO::File;
use POSIX ();
use Fcntl qw(:DEFAULT :flock);
use Debconf::Iterator;
use base 'Debconf::DbDriver::Cache';
use fields qw(directory extension lock format);
sub init {
my $this=shift;
$this->{extension} = "" unless exists $this->{extension};
$this->{format} = "822" unless exists $this->{format};
$this->{backup} = 1 unless exists $this->{backup};
$this->error("No format specified") unless $this->{format};
eval "use Debconf::Format::$this->{format}";
if ($@) {
$this->error("Error setting up format object $this->{format}: $@");
}
$this->{format}="Debconf::Format::$this->{format}"->new;
if (not ref $this->{format}) {
$this->error("Unable to make format object");
}
$this->error("No directory specified") unless $this->{directory};
if (not -d $this->{directory} and not $this->{readonly}) {
mkdir $this->{directory} ||
$this->error("mkdir $this->{directory}:$!");
}
if (not -d $this->{directory}) {
$this->error($this->{directory}." does not exist");
}
debug "db $this->{name}" => "started; directory is $this->{directory}";
if (! $this->{readonly}) {
open ($this->{lock}, ">".$this->{directory}."/.lock") or
$this->error("could not lock $this->{directory}: $!");
while (! flock($this->{lock}, LOCK_EX | LOCK_NB)) {
next if $! == &POSIX::EINTR;
$this->error("$this->{directory} is locked by another process: $!");
last;
}
}
}
sub load {
my $this=shift;
my $item=shift;
debug "db $this->{name}" => "loading $item";
my $file=$this->{directory}.'/'.$this->filename($item);
return unless -e $file;
my $fh=IO::File->new;
open($fh, $file) or $this->error("$file: $!");
$this->cacheadd($this->{format}->read($fh));
close $fh;
}
sub save {
my $this=shift;
my $item=shift;
my $data=shift;
return unless $this->accept($item);
return if $this->{readonly};
debug "db $this->{name}" => "saving $item";
my $file=$this->{directory}.'/'.$this->filename($item);
my $fh=IO::File->new;
if ($this->ispassword($item)) {
sysopen($fh, $file."-new", O_WRONLY|O_TRUNC|O_CREAT, 0600)
or $this->error("$file-new: $!");
}
else {
open($fh, ">$file-new") or $this->error("$file-new: $!");
}
$this->{format}->beginfile;
$this->{format}->write($fh, $data, $item)
or $this->error("could not write $file-new: $!");
$this->{format}->endfile;
$fh->flush or $this->error("could not flush $file-new: $!");
$fh->sync or $this->error("could not sync $file-new: $!");
close $fh or $this->error("could not close $file-new: $!");
if (-e $file && $this->{backup}) {
rename($file, $file."-old") or
debug "db $this->{name}" => "rename failed: $!";
}
rename("$file-new", $file) or $this->error("rename failed: $!");
}
sub shutdown {
my $this=shift;
$this->SUPER::shutdown(@_);
delete $this->{lock};
return 1;
}
sub exists {
my $this=shift;
my $name=shift;
my $incache=$this->SUPER::exists($name);
return $incache if (!defined $incache or $incache);
return -e $this->{directory}.'/'.$this->filename($name);
}
sub remove {
my $this=shift;
my $name=shift;
return if $this->{readonly} or not $this->accept($name);
debug "db $this->{name}" => "removing $name";
my $file=$this->{directory}.'/'.$this->filename($name);
unlink $file or return undef;
if (-e $file."-old") {
unlink $file."-old" or return undef;
}
return 1;
}
sub accept {
my $this=shift;
my $name=shift;
return if $name=~m#\.\./# or $name=~m#/\.\.#;
$this->SUPER::accept($name, @_);
}
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