413 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			413 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/*
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 * StatusNet - the distributed open-source microblogging tool
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 * Copyright (C) 2008, 2009, StatusNet, Inc.
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU Affero General Public License as published by
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 * the Free Software Foundation, either version 3 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU Affero General Public License for more details.
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 *
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 * You should have received a copy of the GNU Affero General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
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require_once INSTALLDIR . '/lib/oauthstore.php';
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class ApiStatusNetOAuthDataStore extends StatusNetOAuthDataStore
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{
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    function lookup_consumer($consumerKey)
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    {
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        $con = Consumer::staticGet('consumer_key', $consumerKey);
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        if (!$con) {
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            // Create an anon consumer and anon application if one
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            // doesn't exist already
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            if ($consumerKey == 'anonymous') {
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                common_debug("API OAuth - creating anonymous consumer");
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                $con = new Consumer();
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                $con->consumer_key    = $consumerKey;
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                $con->consumer_secret = $consumerKey;
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                $con->created         = common_sql_now();
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                $result = $con->insert();
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                if (!$result) {
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                    // TRANS: Server error displayed when trying to create an anynymous OAuth consumer.
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                    $this->serverError(_('Could not create anonymous consumer.'));
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                }
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                $app = Oauth_application::getByConsumerKey('anonymous');
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                if (!$app) {
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                    common_debug("API OAuth - creating anonymous application");
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                    $app               = new OAuth_application();
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                    $app->owner        = 1; // XXX: What to do here?
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                    $app->consumer_key = $con->consumer_key;
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                    $app->name         = 'anonymous';
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                    $app->icon         = 'default-avatar-stream.png'; // XXX: Fix this!
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                    $app->description  = "An anonymous application";
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                    // XXX: allow the user to set the access type when
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                    // authorizing? Currently we default to r+w for anonymous
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                    // OAuth client applications
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                    $app->access_type  = 3; // read + write
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                    $app->type         = 2; // desktop
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                    $app->created      = common_sql_now();
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                    $id = $app->insert();
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                    if (!$id) {
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			// TRANS: Server error displayed when trying to create an anynymous OAuth application.
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                        $this->serverError(_("Could not create anonymous OAuth application."));
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                    }
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                }
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            } else {
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                return null;
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            }
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        }
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        return new OAuthConsumer(
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            $con->consumer_key,
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            $con->consumer_secret
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        );
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    }
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    function getAppByRequestToken($token_key)
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    {
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        // Look up the full req token
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        $req_token = $this->lookup_token(
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            null,
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            'request',
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            $token_key
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        );
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        if (empty($req_token)) {
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            common_debug("couldn't get request token from oauth datastore");
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            return null;
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        }
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        // Look up the full Token
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        $token = new Token();
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        $token->tok = $req_token->key;
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        $result = $token->find(true);
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        if (empty($result)) {
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            common_debug('Couldn\'t find req token in the token table.');
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            return null;
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        }
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        // Look up the app
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        $app = new Oauth_application();
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        $app->consumer_key = $token->consumer_key;
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        $result = $app->find(true);
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        if (!empty($result)) {
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            return $app;
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        } else {
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            common_debug("Couldn't find the app!");
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            return null;
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        }
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    }
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    function new_access_token($token, $consumer, $verifier)
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    {
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        common_debug(
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            sprintf(
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                "New access token from request token %s, consumer %s and verifier %s ",
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                $token,
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                $consumer,
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                $verifier
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            ),
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            __FILE__
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        );
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        $rt = new Token();
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        $rt->consumer_key = $consumer->key;
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        $rt->tok          = $token->key;
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        $rt->type         = 0; // request
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        $app = Oauth_application::getByConsumerKey($consumer->key);
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        assert(!empty($app));
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        if ($rt->find(true) && $rt->state == 1 && $rt->verifier == $verifier) { // authorized
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            common_debug('Request token found.', __FILE__);
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            // find the app and profile associated with this token
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            $tokenAssoc = Oauth_token_association::staticGet('token', $rt->tok);
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            if (!$tokenAssoc) {
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                throw new Exception(
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                    // TRANS: Exception thrown when no token association could be found.
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                    _('Could not find a profile and application associated with the request token.')
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                );
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            }
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            // Check to see if we have previously issued an access token for
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            // this application and profile; if so we can just return the
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            // existing access token. That seems to be the best practice. It
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            // makes it so users only have to authorize the app once per
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            // machine.
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            $appUser = new Oauth_application_user();
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            $appUser->application_id = $app->id;
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            $appUser->profile_id     = $tokenAssoc->profile_id;
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            $result = $appUser->find(true);
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            if (!empty($result)) {
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                common_log(LOG_INFO,
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                     sprintf(
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                        "Existing access token found for application %s, profile %s.",
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                        $app->id,
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                        $tokenAssoc->profile_id
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                     )
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                );
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                $at = null;
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                // Special case: we used to store request tokens in the
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                // Oauth_application_user record, and the access_type would
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                // always be 0 (no access) as a failsafe until an access
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                // token was issued and replaced the request token. There could
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                // be a few old Oauth_application_user records storing request
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                // tokens still around, and we don't want to accidentally
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                // return a useless request token instead of a new access
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                // token. So if we find one, we generate a new access token
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                // and update the existing Oauth_application_user record before
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                // returning the new access token. This should be rare.
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                if ($appUser->access_type == 0) {
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                    $at = $this->generateNewAccessToken($consumer, $rt, $verifier);
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                    $this->updateAppUser($appUser, $app, $at);
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                } else {
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                    $at = new Token();
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                    // fetch the full access token
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                    $at->consumer_key = $consumer->key;
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                    $at->tok          = $appUser->token;
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                    $result = $at->find(true);
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                    if (!$result) {
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                        throw new Exception(
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                            // TRANS: Exception thrown when no access token can be issued.
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                            _('Could not issue access token.')
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                        );
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                    }
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                }
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                // Yay, we can re-issue the access token
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                return new OAuthToken($at->tok, $at->secret);
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            } else {
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               common_log(LOG_INFO,
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                    sprintf(
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                        "Creating new access token for application %s, profile %s.",
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                        $app->id,
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                        $tokenAssoc->profile_id
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                     )
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                );
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                $at = $this->generateNewAccessToken($consumer, $rt, $verifier);
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                $this->newAppUser($tokenAssoc, $app, $at);
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                // Okay, good
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                return new OAuthToken($at->tok, $at->secret);
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            }
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        } else {
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            // the token was not authorized or not verfied
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            common_log(
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                LOG_INFO,
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                sprintf(
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                    "API OAuth - Attempt to exchange unauthorized or unverified request token %s for an access token.",
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                     $rt->tok
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                )
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            );
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            return null;
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        }
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    }
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    /*
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     * Generate a new access token and save it to the database
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     *
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     * @param Consumer $consumer the OAuth consumer
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     * @param Token    $rt       the authorized request token
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     * @param string   $verifier the OAuth 1.0a verifier
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     *
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     * @access private
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     *
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     * @return Token   $at       the new access token
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     */
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    private function generateNewAccessToken($consumer, $rt, $verifier)
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    {
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        $at = new Token();
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        $at->consumer_key      = $consumer->key;
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        $at->tok               = common_good_rand(16);
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        $at->secret            = common_good_rand(16);
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        $at->type              = 1; // access
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        $at->verifier          = $verifier;
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        $at->verified_callback = $rt->verified_callback; // 1.0a
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        $at->created           = common_sql_now();
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        if (!$at->insert()) {
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            $e = $at->_lastError;
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            common_debug('access token "' . $at->tok . '" not inserted: "' . $e->message . '"', __FILE__);
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            return null;
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        } else {
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            common_debug('access token "' . $at->tok . '" inserted', __FILE__);
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            // burn the old one
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            $orig_rt   = clone($rt);
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            $rt->state = 2; // used
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            if (!$rt->update($orig_rt)) {
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                return null;
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            }
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            common_debug('request token "' . $rt->tok . '" updated', __FILE__);
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        }
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        return $at;
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    }
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   /*
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    * Add a new app user (Oauth_application_user) record
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    *
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    * @param Oauth_token_association $tokenAssoc token-to-app association
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    * @param Oauth_application       $app        the OAuth client app
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    * @param Token                   $at         the access token
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    *
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    * @access private
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    *
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    * @return void
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    */
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    private function newAppUser($tokenAssoc, $app, $at)
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    {
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        $appUser = new Oauth_application_user();
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        $appUser->profile_id     = $tokenAssoc->profile_id;
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        $appUser->application_id = $app->id;
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        $appUser->access_type    = $app->access_type;
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        $appUser->token          = $at->tok;
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        $appUser->created        = common_sql_now();
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        $result = $appUser->insert();
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        if (!$result) {
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            common_log_db_error($appUser, 'INSERT', __FILE__);
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            // TRANS: Server error displayed when a database error occurs.
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            throw new Exception(
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                _('Database error inserting OAuth application user.')
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            );
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        }
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    }
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   /*
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    * Update an existing app user (Oauth_application_user) record
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    *
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    * @param Oauth_application_user $appUser existing app user rec
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    * @param Oauth_application      $app     the OAuth client app
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    * @param Token                  $at      the access token
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    *
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    * @access private
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    *
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    * @return void
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    */
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    private function updateAppUser($appUser, $app, $at)
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    {
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        $original = clone($appUser);
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        $appUser->access_type = $app->access_type;
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        $appUser->token       = $at->tok;
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        $result = $appUser->update($original);
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        if (!$result) {
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            common_log_db_error($appUser, 'UPDATE', __FILE__);
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            // TRANS: Server error displayed when a database error occurs.
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            throw new Exception(
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                _('Database error updating OAuth application user.')
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            );
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        }
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    }
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    /**
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     * Revoke specified access token
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     *
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     * Revokes the token specified by $token_key.
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     * Throws exceptions in case of error.
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     *
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     * @param string $token_key the token to be revoked
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     * @param int    $type      type of token (0 = req, 1 = access)
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     *
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     * @access public
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     *
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     * @return void
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     */
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    public function revoke_token($token_key, $type = 0) {
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        $rt        = new Token();
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        $rt->tok   = $token_key;
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        $rt->type  = $type;
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        $rt->state = 0;
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        if (!$rt->find(true)) {
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            // TRANS: Exception thrown when an attempt is made to revoke an unknown token.
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            throw new Exception(_('Tried to revoke unknown token.'));
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        }
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        if (!$rt->delete()) {
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            // TRANS: Exception thrown when an attempt is made to remove a revoked token.
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            throw new Exception(_('Failed to delete revoked token.'));
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        }
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    }
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    /*
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     * Create a new request token. Overrided to support OAuth 1.0a callback
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     *
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     * @param OAuthConsumer $consumer the OAuth Consumer for this token
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     * @param string        $callback the verified OAuth callback URL
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     *
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     * @return OAuthToken   $token a new unauthorized OAuth request token
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     */
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    function new_request_token($consumer, $callback)
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    {
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        $t = new Token();
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        $t->consumer_key = $consumer->key;
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        $t->tok = common_good_rand(16);
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        $t->secret = common_good_rand(16);
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        $t->type = 0; // request
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        $t->state = 0; // unauthorized
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        $t->verified_callback = $callback;
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        if ($callback === 'oob') {
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            // six digit pin
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            $t->verifier = mt_rand(0, 9999999);
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        } else {
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            $t->verifier = common_good_rand(8);
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        }
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        $t->created = DB_DataObject_Cast::dateTime();
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        if (!$t->insert()) {
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            return null;
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        } else {
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            return new OAuthToken($t->tok, $t->secret);
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        }
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    }
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}
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