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<?php
/*
 * StatusNet - the distributed open-source microblogging tool
 * Copyright (C) 2008, 2009, StatusNet, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }

require_once INSTALLDIR . '/lib/oauthstore.php';

class ApiStatusNetOAuthDataStore extends StatusNetOAuthDataStore
{

    function lookup_consumer($consumer_key)
    {
        $con = Consumer::staticGet('consumer_key', $consumer_key);

        if (!$con) {
            return null;
        }

        return new OAuthConsumer($con->consumer_key,
                                 $con->consumer_secret);
    }

    function getAppByRequestToken($token_key)
    {
        // Look up the full req tokenx

        $req_token = $this->lookup_token(null,
                                         'request',
                                         $token_key);

        if (empty($req_token)) {
            common_debug("couldn't get request token from oauth datastore");
            return null;
        }

        // Look up the full Token

        $token = new Token();
        $token->tok = $req_token->key;
        $result = $token->find(true);

        if (empty($result)) {
            common_debug('Couldn\'t find req token in the token table.');
            return null;
        }

        // Look up the app

        $app = new Oauth_application();
        $app->consumer_key = $token->consumer_key;
        $result = $app->find(true);

        if (!empty($result)) {
            return $app;
        } else {
            common_debug("Couldn't find the app!");
            return null;
        }
    }

    function new_access_token($token, $consumer)
    {
        common_debug('new_access_token("'.$token->key.'","'.$consumer->key.'")', __FILE__);

        $rt = new Token();
        $rt->consumer_key = $consumer->key;
        $rt->tok = $token->key;
        $rt->type = 0; // request

        $app = Oauth_application::getByConsumerKey($consumer->key);

        if (empty($app)) {
            common_debug("empty app!");
        }

        if ($rt->find(true) && $rt->state == 1) { // authorized
            common_debug('request token found.', __FILE__);

            // find the associated user of the app

            $appUser = new Oauth_application_user();
            $appUser->application_id = $app->id;
            $appUser->token = $rt->tok;
            $result = $appUser->find(true);

            if (!empty($result)) {
                common_debug("Oath app user found.");
            } else {
                common_debug("Oauth app user not found. app id $app->id token $rt->tok");
                return null;
            }

            // go ahead and make the access token

            $at = new Token();
            $at->consumer_key = $consumer->key;
            $at->tok = common_good_rand(16);
            $at->secret = common_good_rand(16);
            $at->type = 1; // access
            $at->created = DB_DataObject_Cast::dateTime();

            if (!$at->insert()) {
                $e = $at->_lastError;
                common_debug('access token "'.$at->tok.'" not inserted: "'.$e->message.'"', __FILE__);
                return null;
            } else {
                common_debug('access token "'.$at->tok.'" inserted', __FILE__);
                // burn the old one
                $orig_rt = clone($rt);
                $rt->state = 2; // used
                if (!$rt->update($orig_rt)) {
                    return null;
                }
                common_debug('request token "'.$rt->tok.'" updated', __FILE__);

                // update the token from req to access for the user

                $orig = clone($appUser);
                $appUser->token = $at->tok;

                // It's at this point that we change the access type
                // to whatever the application's access is.  Request
                // tokens should always have an access type of 0, and
                // therefore be unuseable for making requests for
                // protected resources.

                $appUser->access_type = $app->access_type;

                $result = $appUser->update($orig);

                if (empty($result)) {
                    common_debug('couldn\'t update OAuth app user.');
                    return null;
                }

                // Okay, good

                return new OAuthToken($at->tok, $at->secret);
            }

        } else {
            return null;
        }
    }

}