File Coverage

blib/lib/Apache2/Authen/Passphrase.pm

Criterion	Covered	Total	%
statement	54	65	83.0
branch	6	12	50.0
condition	2	2	100.0
subroutine	15	16	93.7
pod	4	4	100.0
total	81	99	81.8

package Apache2::Authen::Passphrase;

our $VERSION = 0.002001;

use 5.014000;
use strict;
use warnings;
use parent qw/Exporter/;
use subs qw/OK HTTP_UNAUTHORIZED/;

use constant +{
  USER_REGEX => qr/^\w{2,20}$/pa,
  PASSPHRASE_VERSION => 1,
  INVALID_USER => "invalid-user\n",
  BAD_PASSWORD => "bad-password\n",
};

use if $ENV{MOD_PERL}, 'Apache2::RequestRec';
use if $ENV{MOD_PERL}, 'Apache2::Access';
use if $ENV{MOD_PERL}, 'Apache2::Const' => qw/OK HTTP_UNAUTHORIZED/;
use Authen::Passphrase;
use Authen::Passphrase::BlowfishCrypt;
use YAML::Any qw/LoadFile DumpFile/;

our @EXPORT_OK = qw/pwset pwcheck pwhash USER_REGEX PASSPHRASE_VERSION INVALID_USER BAD_PASSWORD/;

##################################################

our $rootdir //= $ENV{AAP_ROOTDIR};

sub pwhash{
  my ($pass)=@_;

  my $ppr=Authen::Passphrase::BlowfishCrypt->new(
	cost => 10,
	passphrase => $pass,
	salt_random => 1,
  );

  $ppr->as_rfc2307
}

sub pwset{
  my ($user, $pass)=@_;

  my $file = "$rootdir/$user.yml";
  my $conf = eval { LoadFile $file } // undef;
  $conf->{passphrase}=pwhash $pass;
  $conf->{passphrase_version}=PASSPHRASE_VERSION;
  DumpFile $file, $conf;

  chmod 0660, $file;
}

sub pwcheck{
  my ($user, $pass)=@_;
  die INVALID_USER unless $user =~ USER_REGEX;
  $user=${^MATCH};# Make taint shut up
  my $conf=LoadFile "$rootdir/$user.yml";

  die BAD_PASSWORD unless keys $conf;# Empty hash means no such user
  die BAD_PASSWORD unless Authen::Passphrase->from_rfc2307($conf->{passphrase})->match($pass);
  pwset $user, $pass if $conf->{passphrase_version} < PASSPHRASE_VERSION
}

sub handler{
  my $r=shift;
  local $rootdir = $r->dir_config('AuthenPassphraseRootdir');

  my ($rc, $pass) = $r->get_basic_auth_pw;
  return $rc unless $rc == OK;

  my $user=$r->user;
  unless (eval { pwcheck $user, $pass; 1 }) {
	$r->note_basic_auth_failure;
	return HTTP_UNAUTHORIZED
  }

  OK
}

1;
__END__