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< ? php
/**
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* StatusNet , the distributed open - source microblogging tool
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*
* Class for doing OAuth authentication against Twitter
*
* PHP version 5
*
* LICENCE : 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 />.
*
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* @ category Plugin
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* @ package StatusNet
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* @ author Zach Copley < zach @ status . net >
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* @ author Julien C < chaumond @ gmail . com >
* @ copyright 2009 - 2010 StatusNet , Inc .
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* @ license http :// www . fsf . org / licensing / licenses / agpl - 3.0 . html GNU Affero General Public License version 3.0
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* @ link http :// status . net /
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*/
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if ( ! defined ( 'STATUSNET' ) && ! defined ( 'LACONICA' )) {
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exit ( 1 );
}
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require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php' ;
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/**
* Class for doing OAuth authentication against Twitter
*
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* Peforms the OAuth " dance " between StatusNet and Twitter -- requests a token ,
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* authorizes it , and exchanges it for an access token . It also creates a link
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* ( Foreign_link ) between the StatusNet user and Twitter user and stores the
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* access token and secret in the link .
*
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* @ category Plugin
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* @ package StatusNet
* @ author Zach Copley < zach @ status . net >
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* @ author Julien C < chaumond @ gmail . com >
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* @ license http :// www . fsf . org / licensing / licenses / agpl - 3.0 . html GNU Affero General Public License version 3.0
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* @ link http :// status . net /
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*
*/
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class TwitterauthorizationAction extends Action
{
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var $twuid = null ;
var $tw_fields = null ;
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var $access_token = null ;
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var $signin = null ;
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var $verifier = null ;
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/**
* Initialize class members . Looks for 'oauth_token' parameter .
*
* @ param array $args misc . arguments
*
* @ return boolean true
*/
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function prepare ( $args )
{
parent :: prepare ( $args );
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$this -> signin = $this -> boolean ( 'signin' );
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$this -> oauth_token = $this -> arg ( 'oauth_token' );
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$this -> verifier = $this -> arg ( 'oauth_verifier' );
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return true ;
}
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/**
* Handler method
*
* @ param array $args is ignored since it ' s now passed in in prepare ()
*
* @ return nothing
*/
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function handle ( $args )
{
parent :: handle ( $args );
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if ( common_logged_in ()) {
$user = common_current_user ();
$flink = Foreign_link :: getByUserID ( $user -> id , TWITTER_SERVICE );
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// If there's already a foreign link record and a foreign user
// it means the accounts are already linked, and this is unecessary.
// So go back.
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if ( isset ( $flink )) {
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$fuser = $flink -> getForeignUser ();
if ( ! empty ( $fuser )) {
common_redirect ( common_local_url ( 'twittersettings' ));
}
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}
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}
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if ( $_SERVER [ 'REQUEST_METHOD' ] == 'POST' ) {
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// User was not logged in to StatusNet before
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$this -> twuid = $this -> trimmed ( 'twuid' );
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$this -> tw_fields = array ( 'screen_name' => $this -> trimmed ( 'tw_fields_screen_name' ),
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'fullname' => $this -> trimmed ( 'tw_fields_fullname' ));
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$this -> access_token = new OAuthToken ( $this -> trimmed ( 'access_token_key' ), $this -> trimmed ( 'access_token_secret' ));
$token = $this -> trimmed ( 'token' );
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if ( ! $token || $token != common_session_token ()) {
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$this -> showForm ( _m ( 'There was a problem with your session token. Try again, please.' ));
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return ;
}
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if ( $this -> arg ( 'create' )) {
if ( ! $this -> boolean ( 'license' )) {
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$this -> showForm ( _m ( 'You can\'t register if you don\'t agree to the license.' ),
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$this -> trimmed ( 'newname' ));
return ;
}
$this -> createNewUser ();
} else if ( $this -> arg ( 'connect' )) {
$this -> connectNewUser ();
} else {
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common_debug ( 'Twitter bridge - ' . print_r ( $this -> args , true ));
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$this -> showForm ( _m ( 'Something weird happened.' ),
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$this -> trimmed ( 'newname' ));
}
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} else {
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// $this->oauth_token is only populated once Twitter authorizes our
// request token. If it's empty we're at the beginning of the auth
// process
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if ( empty ( $this -> oauth_token )) {
$this -> authorizeRequestToken ();
} else {
$this -> saveAccessToken ();
}
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}
}
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/**
* Asks Twitter for a request token , and then redirects to Twitter
* to authorize it .
*
* @ return nothing
*/
function authorizeRequestToken ()
{
try {
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// Get a new request token and authorize it
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$client = new TwitterOAuthClient ();
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$req_tok = $client -> getRequestToken ();
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// Sock the request token away in the session temporarily
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$_SESSION [ 'twitter_request_token' ] = $req_tok -> key ;
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$_SESSION [ 'twitter_request_token_secret' ] = $req_tok -> secret ;
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$auth_link = $client -> getAuthorizeLink ( $req_tok , $this -> signin );
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} catch ( OAuthClientException $e ) {
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$msg = sprintf (
'OAuth client error - code: %1s, msg: %2s' ,
$e -> getCode (),
$e -> getMessage ()
);
common_log ( LOG_INFO , 'Twitter bridge - ' . $msg );
$this -> serverError (
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_m ( 'Couldn\'t link your Twitter account.' )
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);
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}
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common_redirect ( $auth_link );
}
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/**
* Called when Twitter returns an authorized request token . Exchanges
* it for an access token and stores it .
*
* @ return nothing
*/
function saveAccessToken ()
{
// Check to make sure Twitter returned the same request
// token we sent them
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if ( $_SESSION [ 'twitter_request_token' ] != $this -> oauth_token ) {
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$this -> serverError (
_m ( 'Couldn\'t link your Twitter account: oauth_token mismatch.' )
);
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}
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$twitter_user = null ;
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try {
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$client = new TwitterOAuthClient ( $_SESSION [ 'twitter_request_token' ],
$_SESSION [ 'twitter_request_token_secret' ]);
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// Exchange the request token for an access token
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$atok = $client -> getAccessToken ( $this -> verifier );
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// Test the access token and get the user's Twitter info
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$client = new TwitterOAuthClient ( $atok -> key , $atok -> secret );
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$twitter_user = $client -> verifyCredentials ();
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} catch ( OAuthClientException $e ) {
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$msg = sprintf (
'OAuth client error - code: %1$s, msg: %2$s' ,
$e -> getCode (),
$e -> getMessage ()
);
common_log ( LOG_INFO , 'Twitter bridge - ' . $ msg );
$this -> serverError (
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_m ( 'Couldn\'t link your Twitter account.' )
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);
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}
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if ( common_logged_in ()) {
// Save the access token and Twitter user info
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$user = common_current_user ();
$this -> saveForeignLink ( $user -> id , $twitter_user -> id , $atok );
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save_twitter_user ( $twitter_user -> id , $twitter_user -> screen_name );
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} else {
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$this -> twuid = $twitter_user -> id ;
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$this -> tw_fields = array ( " screen_name " => $twitter_user -> screen_name ,
" name " => $twitter_user -> name );
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$this -> access_token = $atok ;
$this -> tryLogin ();
}
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// Clean up the the mess we made in the session
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unset ( $_SESSION [ 'twitter_request_token' ]);
unset ( $_SESSION [ 'twitter_request_token_secret' ]);
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if ( common_logged_in ()) {
common_redirect ( common_local_url ( 'twittersettings' ));
}
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}
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/**
* Saves a Foreign_link between Twitter user and local user ,
* which includes the access token and secret .
*
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* @ param int $user_id StatusNet user ID
* @ param int $twuid Twitter user ID
* @ param OAuthToken $token the access token to save
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*
* @ return nothing
*/
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function saveForeignLink ( $user_id , $twuid , $access_token )
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{
$flink = new Foreign_link ();
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$flink -> user_id = $user_id ;
$flink -> service = TWITTER_SERVICE ;
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// delete stale flink, if any
$result = $flink -> find ( true );
if ( ! empty ( $result )) {
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$flink -> safeDelete ();
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}
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$flink -> user_id = $user_id ;
$flink -> foreign_id = $twuid ;
$flink -> service = TWITTER_SERVICE ;
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$creds = TwitterOAuthClient :: packToken ( $access_token );
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$flink -> credentials = $creds ;
$flink -> created = common_sql_now ();
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// Defaults: noticesync on, everything else off
$flink -> set_flags ( true , false , false , false );
$flink_id = $flink -> insert ();
if ( empty ( $flink_id )) {
common_log_db_error ( $flink , 'INSERT' , __FILE__ );
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$this -> serverError ( _m ( 'Couldn\'t link your Twitter account.' ));
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}
return $flink_id ;
}
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function showPageNotice ()
{
if ( $this -> error ) {
$this -> element ( 'div' , array ( 'class' => 'error' ), $this -> error );
} else {
$this -> element ( 'div' , 'instructions' ,
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sprintf ( _m ( 'This is the first time you\'ve logged into %s so we must connect your Twitter account to a local account. You can either create a new account, or connect with your existing account, if you have one.' ), common_config ( 'site' , 'name' )));
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}
}
function title ()
{
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return _m ( 'Twitter Account Setup' );
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}
function showForm ( $error = null , $username = null )
{
$this -> error = $error ;
$this -> username = $username ;
$this -> showPage ();
}
function showPage ()
{
parent :: showPage ();
}
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/**
* @ fixme much of this duplicates core code , which is very fragile .
* Should probably be replaced with an extensible mini version of
* the core registration form .
*/
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function showContent ()
{
if ( ! empty ( $this -> message_text )) {
$this -> element ( 'p' , null , $this -> message );
return ;
}
$this -> elementStart ( 'form' , array ( 'method' => 'post' ,
'id' => 'form_settings_twitter_connect' ,
'class' => 'form_settings' ,
'action' => common_local_url ( 'twitterauthorization' )));
$this -> elementStart ( 'fieldset' , array ( 'id' => 'settings_twitter_connect_options' ));
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$this -> element ( 'legend' , null , _m ( 'Connection options' ));
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$this -> elementStart ( 'ul' , 'form_data' );
$this -> elementStart ( 'li' );
$this -> element ( 'input' , array ( 'type' => 'checkbox' ,
'id' => 'license' ,
'class' => 'checkbox' ,
'name' => 'license' ,
'value' => 'true' ));
$this -> elementStart ( 'label' , array ( 'class' => 'checkbox' , 'for' => 'license' ));
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$message = _m ( 'My text and files are available under %s ' .
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'except this private data: password, ' .
'email address, IM address, and phone number.' );
$link = '<a href="' .
htmlspecialchars ( common_config ( 'license' , 'url' )) .
'">' .
htmlspecialchars ( common_config ( 'license' , 'title' )) .
'</a>' ;
$this -> raw ( sprintf ( htmlspecialchars ( $message ), $link ));
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$this -> elementEnd ( 'label' );
$this -> elementEnd ( 'li' );
$this -> elementEnd ( 'ul' );
$this -> hidden ( 'access_token_key' , $this -> access_token -> key );
$this -> hidden ( 'access_token_secret' , $this -> access_token -> secret );
$this -> hidden ( 'twuid' , $this -> twuid );
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$this -> hidden ( 'tw_fields_screen_name' , $this -> tw_fields [ 'screen_name' ]);
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$this -> hidden ( 'tw_fields_name' , $this -> tw_fields [ 'name' ]);
$this -> elementStart ( 'fieldset' );
$this -> hidden ( 'token' , common_session_token ());
$this -> element ( 'legend' , null ,
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_m ( 'Create new account' ));
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$this -> element ( 'p' , null ,
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_m ( 'Create a new user with this nickname.' ));
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$this -> elementStart ( 'ul' , 'form_data' );
$this -> elementStart ( 'li' );
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$this -> input ( 'newname' , _m ( 'New nickname' ),
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( $this -> username ) ? $this -> username : '' ,
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_m ( '1-64 lowercase letters or numbers, no punctuation or spaces' ));
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$this -> elementEnd ( 'li' );
$this -> elementEnd ( 'ul' );
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$this -> submit ( 'create' , _m ( 'Create' ));
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$this -> elementEnd ( 'fieldset' );
$this -> elementStart ( 'fieldset' );
$this -> element ( 'legend' , null ,
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_m ( 'Connect existing account' ));
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$this -> element ( 'p' , null ,
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_m ( 'If you already have an account, login with your username and password to connect it to your Twitter account.' ));
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$this -> elementStart ( 'ul' , 'form_data' );
$this -> elementStart ( 'li' );
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$this -> input ( 'nickname' , _m ( 'Existing nickname' ));
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$this -> elementEnd ( 'li' );
$this -> elementStart ( 'li' );
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$this -> password ( 'password' , _m ( 'Password' ));
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$this -> elementEnd ( 'li' );
$this -> elementEnd ( 'ul' );
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$this -> submit ( 'connect' , _m ( 'Connect' ));
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$this -> elementEnd ( 'fieldset' );
$this -> elementEnd ( 'fieldset' );
$this -> elementEnd ( 'form' );
}
function message ( $msg )
{
$this -> message_text = $msg ;
$this -> showPage ();
}
function createNewUser ()
{
if ( common_config ( 'site' , 'closed' )) {
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$this -> clientError ( _m ( 'Registration not allowed.' ));
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return ;
}
$invite = null ;
if ( common_config ( 'site' , 'inviteonly' )) {
$code = $_SESSION [ 'invitecode' ];
if ( empty ( $code )) {
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$this -> clientError ( _m ( 'Registration not allowed.' ));
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return ;
}
$invite = Invitation :: staticGet ( $code );
if ( empty ( $invite )) {
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$this -> clientError ( _m ( 'Not a valid invitation code.' ));
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return ;
}
}
$nickname = $this -> trimmed ( 'newname' );
if ( ! Validate :: string ( $nickname , array ( 'min_length' => 1 ,
'max_length' => 64 ,
'format' => NICKNAME_FMT ))) {
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$this -> showForm ( _m ( 'Nickname must have only lowercase letters and numbers and no spaces.' ));
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return ;
}
if ( ! User :: allowed_nickname ( $nickname )) {
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$this -> showForm ( _m ( 'Nickname not allowed.' ));
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return ;
}
if ( User :: staticGet ( 'nickname' , $nickname )) {
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$this -> showForm ( _m ( 'Nickname already in use. Try another one.' ));
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return ;
}
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$fullname = trim ( $this -> tw_fields [ 'name' ]);
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$args = array ( 'nickname' => $nickname , 'fullname' => $fullname );
if ( ! empty ( $invite )) {
$args [ 'code' ] = $invite -> code ;
}
$user = User :: register ( $args );
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if ( empty ( $user )) {
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$this -> serverError ( _m ( 'Error registering user.' ));
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return ;
}
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$result = $this -> saveForeignLink ( $user -> id ,
$this -> twuid ,
$this -> access_token );
save_twitter_user ( $this -> twuid , $this -> tw_fields [ 'screen_name' ]);
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if ( ! $result ) {
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$this -> serverError ( _m ( 'Error connecting user to Twitter.' ));
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return ;
}
common_set_user ( $user );
common_real_login ( true );
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common_debug ( 'TwitterBridge Plugin - ' .
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" Registered new user $user->id from Twitter user $this->twuid " );
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common_redirect ( common_local_url ( 'showstream' , array ( 'nickname' => $user -> nickname )),
303 );
}
function connectNewUser ()
{
$nickname = $this -> trimmed ( 'nickname' );
$password = $this -> trimmed ( 'password' );
if ( ! common_check_user ( $nickname , $password )) {
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$this -> showForm ( _m ( 'Invalid username or password.' ));
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return ;
}
$user = User :: staticGet ( 'nickname' , $nickname );
if ( ! empty ( $user )) {
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common_debug ( 'TwitterBridge Plugin - ' .
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" Legit user to connect to Twitter: $nickname " );
}
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$result = $this -> saveForeignLink ( $user -> id ,
$this -> twuid ,
$this -> access_token );
save_twitter_user ( $this -> twuid , $this -> tw_fields [ 'screen_name' ]);
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if ( ! $result ) {
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$this -> serverError ( _m ( 'Error connecting user to Twitter.' ));
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return ;
}
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common_debug ( 'TwitterBridge Plugin - ' .
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" Connected Twitter user $this->twuid to local user $user->id " );
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common_set_user ( $user );
common_real_login ( true );
$this -> goHome ( $user -> nickname );
}
function connectUser ()
{
$user = common_current_user ();
$result = $this -> flinkUser ( $user -> id , $this -> twuid );
if ( empty ( $result )) {
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$this -> serverError ( _m ( 'Error connecting user to Twitter.' ));
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return ;
}
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common_debug ( 'TwitterBridge Plugin - ' .
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" Connected Twitter user $this->twuid to local user $user->id " );
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// Return to Twitter connection settings tab
common_redirect ( common_local_url ( 'twittersettings' ), 303 );
}
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function tryLogin ()
{
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common_debug ( 'TwitterBridge Plugin - ' .
" Trying login for Twitter user $this->twuid . " );
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$flink = Foreign_link :: getByForeignID ( $this -> twuid ,
TWITTER_SERVICE );
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if ( ! empty ( $flink )) {
$user = $flink -> getUser ();
if ( ! empty ( $user )) {
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common_debug ( 'TwitterBridge Plugin - ' .
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" Logged in Twitter user $flink->foreign_id as user $user->id ( $user->nickname ) " );
common_set_user ( $user );
common_real_login ( true );
$this -> goHome ( $user -> nickname );
}
} else {
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common_debug ( 'TwitterBridge Plugin - ' .
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" No flink found for twuid: $this->twuid - new user " );
$this -> showForm ( null , $this -> bestNewNickname ());
}
}
function goHome ( $nickname )
{
$url = common_get_returnto ();
if ( $url ) {
// We don't have to return to it again
common_set_returnto ( null );
} else {
$url = common_local_url ( 'all' ,
array ( 'nickname' =>
$nickname ));
}
common_redirect ( $url , 303 );
}
function bestNewNickname ()
{
if ( ! empty ( $this -> tw_fields [ 'name' ])) {
$nickname = $this -> nicknamize ( $this -> tw_fields [ 'name' ]);
if ( $this -> isNewNickname ( $nickname )) {
return $nickname ;
}
}
return null ;
}
// Given a string, try to make it work as a nickname
function nicknamize ( $str )
{
$str = preg_replace ( '/\W/' , '' , $str );
$str = str_replace ( array ( '-' , '_' ), '' , $str );
return strtolower ( $str );
}
function isNewNickname ( $str )
{
if ( ! Validate :: string ( $str , array ( 'min_length' => 1 ,
'max_length' => 64 ,
'format' => NICKNAME_FMT ))) {
return false ;
}
if ( ! User :: allowed_nickname ( $str )) {
return false ;
}
if ( User :: staticGet ( 'nickname' , $str )) {
return false ;
}
return true ;
}
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}