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package Lemonldap::NG::Handler::Main::Jail;
use strict;
use Safe;
use Lemonldap::NG::Common::Safelib; #link protected safe Safe object
# Workaround for another ModPerl/Mouse issue...
BEGIN {
require Mouse;
no warnings;
my $v = $Mouse::VERSION
? sprintf( "%d.%03d%03d", ( $Mouse::VERSION =~ /(\d+)/g ) )
: 0;
if ( $v < 2.005001 and $Lemonldap::NG::Handler::Apache2::Main::VERSION ) {
require Moose;
Moose->import();
}
else {
Mouse->import();
}
}
has customFunctions => ( is => 'rw', isa => 'Maybe[Str]' );
has useSafeJail => ( is => 'rw', isa => 'Maybe[Int]' );
has multiValuesSeparator => ( is => 'rw', isa => 'Maybe[Str]' );
has jail => ( is => 'rw' );
has error => ( is => 'rw' );
our $VERSION = '2.18.0';
our @builtCustomFunctions;
## @imethod protected build_jail()
# Build and return the security jail used to compile rules and headers.
# @return Safe object
sub build_jail {
my ( $self, $api, $require, $dontDie ) = @_;
my $build = 1;
return $self->jail
if ( $self->jail
and $self->jail->useSafeJail
and $self->useSafeJail
and $self->jail->useSafeJail == $self->useSafeJail );
$self->useSafeJail(1) unless defined $self->useSafeJail;
if ($require) {
foreach my $f ( split /[,\s]+/, $require ) {
if ( $f =~ /^[\w\:]+$/ ) {
eval "require $f";
}
else {
eval { require $f; };
}
if ($@) {
$dontDie
? $api->logger->error($@)
: die "Unable to load '$f': $@";
undef $build;
}
}
}
if ($build) {
@builtCustomFunctions =
$self->customFunctions
? split( /[,\s]+/, $self->customFunctions )
: ();
foreach (@builtCustomFunctions) {
no warnings 'redefine';
$api->logger->debug("Custom function: $_");
my $sub = $_;
unless (/::/) {
$sub = "$self\::$_";
}
else {
s/^.*:://;
}
next if ( $self->can($_) );
eval "sub $_ {
return $sub(\@_)
}";
$api->logger->error($@) if ($@);
$_ = "&$_";
}
}
if ( $self->useSafeJail ) {
$self->jail( Safe->new );
}
else {
$self->jail($self);
}
# Share objects with Safe jail
$self->jail->share_from( 'Lemonldap::NG::Common::Safelib',
$Lemonldap::NG::Common::Safelib::functions );
# Closure for listMatch
{
no warnings 'redefine';
*listMatch = sub {
return Lemonldap::NG::Common::Safelib::listMatch(
$self->multiValuesSeparator, @_ );
};
}
$self->jail->share_from( __PACKAGE__,
[ @builtCustomFunctions, '&encrypt', '&decrypt', '&token', '&listMatch' ] );
$self->jail->share_from( 'MIME::Base64', ['&encode_base64'] );
#$self->jail->share_from( 'Lemonldap::NG::Handler::Main', ['$_v'] );
# Initialize cryptographic functions to be able to use them in jail.
eval { token('a') };
return $self->jail;
}
# Import crypto methods for jail
sub encrypt {
return &Lemonldap::NG::Handler::Main::tsv->{cipher}->encrypt( $_[0], 1 );
}
sub decrypt {
return &Lemonldap::NG::Handler::Main::tsv->{cipher}->decrypt( $_[0] );
}
sub token {
return $_[0] ? encrypt( join( ':', time, @_ ) ) : encrypt(time);
}
## @method reval
# Fake reval method if useSafeJail is off
sub reval {
my ( $self, $e ) = @_;
return eval $e;
}
## @method wrap_code_ref
# Fake wrap_code_ref method if useSafeJail is off
sub wrap_code_ref {
my ( $self, $e ) = @_;
return $e;
}
## @method share
# Fake share method if useSafeJail is off
sub share {
my ( $self, @vars ) = @_;
$self->share_from( scalar(caller), \@vars );
}
## @method share_from
# Fake share_from method if useSafeJail is off
sub share_from {
my ( $self, $pkg, $vars ) = @_;
no strict 'refs';
foreach my $arg (@$vars) {
my ( $var, $type );
$type = $1 if ( $var = $arg ) =~ s/^(\W)//;
for ( 1 .. 2 ) { # assign twice to avoid any 'used once' warnings
*{$var} =
( !$type ) ? \&{ $pkg . "::$var" }
: ( $type eq '&' ) ? \&{ $pkg . "::$var" }
: ( $type eq '$' ) ? \${ $pkg . "::$var" }
: ( $type eq '@' ) ? \@{ $pkg . "::$var" }
: ( $type eq '%' ) ? \%{ $pkg . "::$var" }
: ( $type eq '*' ) ? *{ $pkg . "::$var" }
: undef;
}
}
}
## @imethod protected jail_reval()
# Build and return restricted eval command
# @return evaluation of $reval or $reval2
sub jail_reval {
my ( $self, $reval ) = @_;
# If nothing is returned by reval, add the return statement to
# the "no safe wrap" reval
my $res = $self->jail->reval($reval);
if ($@) {
$self->error($@);
return undef;
}
return $res;
}
1;
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