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package Plack::Middleware::Auth::OAuth2::ProtectedResource;
use strict;
use warnings;
use parent 'Plack::Middleware';
use Plack::Request;
use Plack::Util::Accessor qw(realm data_handler error_uri);
use Try::Tiny;
use Carp ();
use OAuth::Lite2::Server::Error;
use OAuth::Lite2::ParamMethods;
sub call {
my ($self, $env) = @_;
my $is_legacy = 0;
my $error_res = try {
my $req = Plack::Request->new($env);
# after draft-v6, signature is not required, so always each connection
# should be under TLS.
# warn "insecure bearere token request" unless $req->secure;
my $parser = OAuth::Lite2::ParamMethods->get_param_parser($req)
or OAuth::Lite2::Server::Error::InvalidRequest->throw;
$is_legacy = $parser->is_legacy($req);
# after draft-v6, $params aren't required.
my ($token, $params) = $parser->parse($req);
OAuth::Lite2::Server::Error::InvalidRequest->throw unless $token;
my $dh = $self->{data_handler}->new(request => $req);
my $access_token = $dh->get_access_token($token);
OAuth::Lite2::Server::Error::InvalidToken->throw
unless $access_token;
Carp::croak "OAuth::Lite2::Server::DataHandler::get_access_token doesn't return OAuth::Lite2::Model::AccessToken"
unless $access_token->isa("OAuth::Lite2::Model::AccessToken");
unless ($access_token->created_on + $access_token->expires_in > time())
{
if($is_legacy){
OAuth::Lite2::Server::Error::ExpiredTokenLegacy->throw;
}else{
OAuth::Lite2::Server::Error::ExpiredToken->throw;
}
}
my $auth_info = $dh->get_auth_info_by_id($access_token->auth_id);
OAuth::Lite2::Server::Error::InvalidToken->throw
unless $auth_info;
Carp::croak "OAuth::Lite2::Server::DataHandler::get_auth_info_by_id doesn't return OAuth::Lite2::Model::AuthInfo"
unless $auth_info->isa("OAuth::Lite2::Model::AuthInfo");
$dh->validate_client_by_id($auth_info->client_id)
or OAuth::Lite2::Server::Error::InvalidToken->throw;
$dh->validate_user_by_id($auth_info->user_id)
or OAuth::Lite2::Server::Error::InvalidToken->throw;
$env->{REMOTE_USER} = $auth_info->user_id;
$env->{X_OAUTH_CLIENT} = $auth_info->client_id;
$env->{X_OAUTH_SCOPE} = $auth_info->scope if $auth_info->scope;
# pass legacy flag
$env->{X_OAUTH_IS_LEGACY} = ($is_legacy);
return;
} catch {
if ($_->isa("OAuth::Lite2::Server::Error")) {
my @params;
push(@params, sprintf(q{realm="%s"}, $self->{realm}))
if $self->{realm};
push(@params, sprintf(q{error="%s"}, $_->type));
push(@params, sprintf(q{error_description="%s"}, $_->description))
if $_->description;
push(@params, sprintf(q{error_uri="%s"}, $self->{error_uri}))
if $self->{error_uri};
# push(@params, sprintf(q{scope='%s'}, $_->scope))
# if $_->scope;
if($is_legacy){
return [ $_->code, [ "WWW-Authenticate" =>
"OAuth " . join(', ', @params) ], [ ] ];
}else{
return [ $_->code, [ "WWW-Authenticate" =>
"Bearer " . join(', ', @params) ], [ ] ];
}
} else {
# rethrow
die $_;
}
};
return $error_res || $self->app->($env);
}
=head1 NAME
Plack::Middleware::Auth::OAuth2::ProtectedResource - middleware for OAuth 2.0 Protected Resource endpoint
=head1 SYNOPSIS
my $app = sub {...};
builder {
enable "Plack::Middleware::Auth::OAuth2::ProtectedResource",
data_handler => "YourApp::DataHandler",
error_uri => q{http://example.org/error/description};
enable "Plack::Middleware::JSONP";
enable "Plack::Middleware::ContentLength";
$app;
};
# and on your controller
$plack_request->env->{REMOTE_USER};
$plack_request->env->{X_OAUTH_CLIENT_ID};
$plack_request->env->{X_OAUTH_SCOPE};
=head1 DESCRIPTION
middleware for OAuth 2.0 Protected Resource endpoint
=head1 METHODS
=head2 call( $env )
This method parses access token.
If access token is valid, authorization information are set to environment variables.
=head1 ENV VALUES
After successful verifying authorization within middleware layer,
Following 3 type of values are set in env.
=over 4
=item REMOTE_USER
Identifier of user who grant the client to access the user's protected
resource that is stored on service provider.
=item X_OAUTH_CLIENT
Identifier of the client that accesses to user's protected resource
on beharf of the user.
=item X_OAUTH_SCOPE
Scope parameter that represents what kind of resources that
the user grant client to access.
=back
=head1 AUTHOR
Lyo Kato, E<lt>lyo.kato@gmail.comE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2010 by Lyo Kato
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.8 or,
at your option, any later version of Perl 5 you may have available.
=cut
1;
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