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package Apache2::SiteControl::Rule;
use 5.008;
use strict;
use warnings;
use Carp;
sub new {
my $proto = shift;
my $class = ref($proto) || $proto;
my $this = { };
bless ($this, $class);
return $this;
}
sub grants($$$$)
{
my $this = shift;
my $user = shift;
my $action = shift;
my $resource = shift;
return 0;
}
sub denies($$$$)
{
my $this = shift;
my $user = shift;
my $action = shift;
my $resource = shift;
return "Abstract rule denies everything. Do not use.";
}
1;
__END__
=head1 NAME
Apache2::SiteControl::Rule - Permission manager access rule.
=head2 DESCRIPTION
Each rule is a custom-written class that implements some aspect of your site's
access logic. Rules can choose to grant or deny a request.
package sample::Test;
use strict;
use warnings;
use Carp;
use Apache2::SiteControl::Rule;
use base qw(Apache2::SiteControl::Rule);
sub grants($$$$)
{
my $this = shift;
my $user = shift;
my $action = shift;
my $resource = shift;
if($action eq "edit" && $resource->isa("sample::Record")) {
return 1 if($user{name} eq "root");
}
return 0;
}
sub denies($$$$)
{
return 0;
}
1;
The PermissionManager will only give permission if I<at least> one rule grants
permission, I<and no> rule denies it.
It is important that your rules never grant or deny a request they do not
understand, so it is a good idea to use type checking to prevent strangeness.
B<Assertions should not be used> if you expect different rules to accept
different resource types or user types, since each rule is used on every access
request.
=head1 EXPORT
None by default.
=head1 SEE ALSO
Apache2::SiteControl::UserFactory, Apache::SiteControl::ManagerFactory,
Apache2::SiteControl::PermissionManager, Apache::SiteControl
=head1 AUTHOR
This module was written by Tony Kay, E<lt>tkay@uoregon.eduE<gt>.
=head1 COPYRIGHT AND LICENSE
=cut
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