6

Facebook で自分のサイトにログインする際に問題があります。

developers.facebook.com のチュートリアルに従って、Facebook SDK を使用してログインを作成しましたが、うまくいきません。

何がうまくいかないかを調べるための簡単なテストページを作成しました。これはコードです：

<!DOCTYPE html>
<html>
<head></head>
<body>
<pre>
<?php

$app_id         = '446458238729594';
$app_secret     = '********';
$redirect_uri   = 'http://mysite.localhost/';

try {

    echo( 'Including "facebook.php"...' );
    require './src/facebook.php';
    echo( "done.\n\n" );

    echo( 'Starting session...' );
    $result = session_start();
    if( $result ) {
        echo( "done.\n\n" );
        echo( "\n=====>>>>> Session array:\n" . var_export( $_SESSION, true )
                . "\n\n" );
    } else {
        echo( "fail.\n\n" );
        echo( "\n=====>>>>> Session array:\n" . var_export( $_SESSION, true )
                . "\n\n" );
    }

    echo( "Trying to get counter from the session...\n");
    if( isset( $_SESSION['counter'] ) ) {
        echo( 'Value: ' . $_SESSION['counter'] . "\n" );
        echo( "Increasing to one...\n");
        $_SESSION['counter']++;
        echo( "done.\n" );
        echo( 'Value: ' . $_SESSION['counter'] . "\n\n" );
    } else {
        echo( "fail.\n" );
        echo( "Trying to add a counter and set it's value to 0...\n");
        $_SESSION['counter'] = 0;
        echo( 'Value: ' . $_SESSION['counter'] . "\n" );
        echo( "done.\n\n" );
    }

    echo( 'Creating an instance of Facebook class...' );
    $facebook = new Facebook(
        array(
            'appId'     => $app_id,
            'secret'    => $app_secret,
        )
    );
    echo( "done.\n\n" );
    echo( "The instance of Facebook class:\n" . str_replace( $app_secret,
            '>>>APP_SECRET<<<', var_export( $facebook, true ) ) . "\n\n" );

    echo( "\n=====>>>>> Session array:\n" . var_export( $_SESSION, true )
            . "\n\n" );

    echo( 'Trying to get user ID...' );
    $user_id = $facebook->getUser();
    echo( "done.\n\n" );
    echo( "User ID:\n" . var_export( $user_id, true ) . "\n\n" );

    echo( "\n=====>>>>> Session array:\n" . var_export( $_SESSION, true )
            . "\n\n" );

    echo( 'Trying to get user profile info...' );
    try {
        $user_profile = $facebook->api( '/me' );
        echo( "done.\n\n" );
        echo( "User profile info:\n" . var_export( $user_profile, true )
                . "\n\n" );
    } catch( Exception $exception ) {
        echo( "fail. Probably user is not logged in.\n\n" );
        echo( "Exception:\n--------\n" . str_replace( $app_secret,
                '>>>APP_SECRET<<<', var_export( $exception, true ) )
                . "\n--------\n\n" );
        $user_id = null;
        echo( "User ID is now NULL.\n\n" );
    }

    echo( "\n=====>>>>> Session array:\n" . var_export( $_SESSION, true )
            . "\n\n" );

    if( $user ) {
        echo( 'Seems like user is logged in. Getting logout url...' );
        $url = $facebook->getLogoutUrl();
        echo( "done.\n\n" );
    } else {
        echo( 'Seems like user is NOT logged in. Getting login url...' );
        $url = $facebook->getLoginUrl(
            array(
                'scope'         => 'read_stream, publish_stream, user_birthday,'
                        . ' user_location, user_work_history, user_hometown,'
                        . ' user_photos',
                'redirect_uri'  => $redirect_uri,
            )
        );
        echo( "done.\n\n" );
    }
    echo( 'URL:<br></pre><a href=' . $url .">Login / Logout</a><pre>\n\n" );

    echo( "\n=====>>>>> Session array:\n"
            . var_export( $_SESSION, true ) . "\n\n" );

    if( $user ) {
        echo( 'Seems like user is still logged in. Trying to get some profile'
                . ' info...' );
        echo( "\nCreating request...\n" );
        $queries = array(
            array(
                'method'        => 'GET',
                'relative_url'  => '/' . $user,
            ),
            array(
                'method'        => 'GET',
                'relative_url'  => '/' . $user . '/home?limit=50',
            ),
            array(
                'method'        => 'GET',
                'relative_url'  => '/' . $user . '/friends',
            ),
            array(
                'method'        => 'GET',
                'relative_url'  => '/' . $user . '/photos?limit=6',
            ),
        );
        echo( "Request:\n\n" . var_export( $queries, true ) . "\n\n" );
        echo( "\nEncoding request using JSON format...\n" );
        $queries_encoded = json_encode( $queries );
        echo( "Encoded request:\n\n" . var_export( $queries_encoded, true )
                . "\n\n" );
        try {
            echo( "\nTrying to get response...\n" );
            $response = $facebook->api( '?batch=' . $queries_encoded, 'POST' );
            echo( "Response:\n\n" . var_export( $response, true ) . "\n\n" );
            echo( "\nTrying to decode response...\n" );
            echo( "\n" . json_decode( $response[0]['body'], true ) . "\n" );
            echo( "\n" . json_decode( $response[1]['body'], true ) . "\n" );
            echo( "\n" . json_decode( $response[2]['body'], true ) . "\n" );
            echo( "\n" . json_decode( $response[3]['body'], true ) . "\n" );
            echo( "\n\ndone.\n\n" );
        } catch( Exception $exception ) {
            echo( "fail.\n\n" );
            echo( "Exception:\n--------\n\n" . str_replace( $app_secret,
                    '>>>APP_SECRET<<<', var_export( $exception, true ) )
                    . "\n--------\n\n" );
        }
    } else {
        echo( 'Seems like user is still NOT logged in. At now we can\'t do'
                . ' anything. Try to login using the URL above.' );
    }

    echo( "\n\n========\n\nSession array:\n" . var_export( $_SESSION, true )
            . "\n\n" );

} catch( Exception $exception ) {
    echo( "\n\n\nAn exception have been trown:\n--------\n\n" . str_replace(
            $app_secret, '>>>APP_SECRET<<<', var_export( $exception, true ) )
            . "\n--------\n\n" );
    echo( "\n\n========\n\nSession array:\n" . var_export( $_SESSION, true )
            . "\n\n" );
}

?>
</pre>
</body>
</html>

このページに最初にアクセスした後 (私は Facebook にログインしていません)、次の出力が得られます。

Including "facebook.php"...done.

Starting session...done.


=====>>>>> Session array:
array (
)

Trying to get counter from the session...
fail.
Trying to add a counter and set it's value to 0...
Value: 0
done.

Creating an instance of Facebook class...done.

The instance of Facebook class:
Facebook::__set_state(array(
   'sharedSessionID' => NULL,
   'appId' => '446458238729594',
   'appSecret' => '>>>APP_SECRET<<<',
   'user' => NULL,
   'signedRequest' => NULL,
   'state' => NULL,
   'accessToken' => NULL,
   'fileUploadSupport' => false,
   'trustForwarded' => false,
))


=====>>>>> Session array:
array (
  'counter' => 0,
)

Trying to get user ID...done.

User ID:
0


=====>>>>> Session array:
array (
  'counter' => 0,
)

Trying to get user profile info...fail. Probably user is not logged in.

Exception:
--------
FacebookApiException::__set_state(array(
   'result' => 
  array (
    'error_code' => 7,
    'error' => 
    array (
      'message' => 'Failed to connect to 2a03:2880:2050:1f01:face:b00c:0:2: Network is unreachable',
      'type' => 'CurlException',
    ),
  ),
   'message' => 'Failed to connect to 2a03:2880:2050:1f01:face:b00c:0:2: Network is unreachable',
   'string' => '',
   'code' => 7,
   'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
   'line' => 967,
   'trace' => 
  array (
    0 => 
    array (
      'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
      'line' => 899,
      'function' => 'makeRequest',
      'class' => 'BaseFacebook',
      'type' => '->',
      'args' => 
      array (
        0 => 'https://graph.facebook.com/me',
        1 => 
        array (
          'method' => 'GET',
          'access_token' => '446458238729594|>>>APP_SECRET<<<',
        ),
      ),
    ),
    1 => 
    array (
      'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
      'line' => 866,
      'function' => '_oauthRequest',
      'class' => 'BaseFacebook',
      'type' => '->',
      'args' => 
      array (
        0 => 'https://graph.facebook.com/me',
        1 => 
        array (
          'method' => 'GET',
        ),
      ),
    ),
    2 => 
    array (
      'function' => '_graph',
      'class' => 'BaseFacebook',
      'type' => '->',
      'args' => 
      array (
        0 => '/me',
      ),
    ),
    3 => 
    array (
      'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
      'line' => 644,
      'function' => 'call_user_func_array',
      'args' => 
      array (
        0 => 
        array (
          0 => 
          Facebook::__set_state(array(
             'sharedSessionID' => NULL,
             'appId' => '446458238729594',
             'appSecret' => '>>>APP_SECRET<<<',
             'user' => 0,
             'signedRequest' => NULL,
             'state' => NULL,
             'accessToken' => '446458238729594|>>>APP_SECRET<<<',
             'fileUploadSupport' => false,
             'trustForwarded' => false,
          )),
          1 => '_graph',
        ),
        1 => 
        array (
          0 => '/me',
        ),
      ),
    ),
    4 => 
    array (
      'file' => '/srv/www/htdocs/mysite/web/index.php',
      'line' => 69,
      'function' => 'api',
      'class' => 'BaseFacebook',
      'type' => '->',
      'args' => 
      array (
        0 => '/me',
      ),
    ),
  ),
   'previous' => NULL,
))
--------

User ID is now NULL.


=====>>>>> Session array:
array (
  'counter' => 0,
)

Seems like user is NOT logged in. Getting login url...done.

URL:
Login / Logout


=====>>>>> Session array:
array (
  'counter' => 0,
  'fb_446458238729594_state' => '84260edcd60940884d261812496a488c',
)

Seems like user is still NOT logged in. At now we can't do anything. Try to login using the URL above.

========

Session array:
array (
  'counter' => 0,
  'fb_446458238729594_state' => '84260edcd60940884d261812496a488c',
)

次に、指定された URL を使用してログインを試みます。Facebook アプリの認証ページに移動します。要求された権限を確認すると、次の URL にリダイレクトされます。

http://mysite.localhost/?state=84260edcd60940884d261812496a488c&code=AQDkHPlXXweEiTjXg-sUXwwQAy0_xRYc89Opfz6AF9dlGOomCSG7fjf0440ctHuADKMEG4P7CheeNx9PnwUta-jkfpm03MjDCKyieOZpIPG-evlKYm64mRxD2Q5f_-HJROIC9I_-lHswr5RT3huSQySA55pD28b07Ouv87NqihZ1brGfU-_0LyhcdldtNikb-2xn6NRpa17xEmU37pBqDV1r#_=_

その後、ログインし、ページが Facebook プロファイルから情報を取得して表示することを期待していますが、そうではありません。私はこの出力を得る：

Including "facebook.php"...done.

Starting session...done.


=====>>>>> Session array:
array (
  'counter' => 0,
  'fb_446458238729594_state' => '84260edcd60940884d261812496a488c',
)

Trying to get counter from the session...
Value: 0
Increasing to one...
done.
Value: 1

Creating an instance of Facebook class...done.

The instance of Facebook class:
Facebook::__set_state(array(
   'sharedSessionID' => NULL,
   'appId' => '446458238729594',
   'appSecret' => '>>>APP_SECRET<<<',
   'user' => NULL,
   'signedRequest' => NULL,
   'state' => '84260edcd60940884d261812496a488c',
   'accessToken' => NULL,
   'fileUploadSupport' => false,
   'trustForwarded' => false,
))


=====>>>>> Session array:
array (
  'counter' => 1,
  'fb_446458238729594_state' => '84260edcd60940884d261812496a488c',
)

Trying to get user ID...done.

User ID:
0


=====>>>>> Session array:
array (
  'counter' => 1,
)

Trying to get user profile info...fail. Probably user is not logged in.

Exception:
--------
FacebookApiException::__set_state(array(
   'result' => 
  array (
    'error_code' => 7,
    'error' => 
    array (
      'message' => 'Failed to connect to 2a03:2880:2050:1f01:face:b00c:0:2: Network is unreachable',
      'type' => 'CurlException',
    ),
  ),
   'message' => 'Failed to connect to 2a03:2880:2050:1f01:face:b00c:0:2: Network is unreachable',
   'string' => '',
   'code' => 7,
   'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
   'line' => 967,
   'trace' => 
  array (
    0 => 
    array (
      'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
      'line' => 899,
      'function' => 'makeRequest',
      'class' => 'BaseFacebook',
      'type' => '->',
      'args' => 
      array (
        0 => 'https://graph.facebook.com/me',
        1 => 
        array (
          'method' => 'GET',
          'access_token' => '446458238729594|>>>APP_SECRET<<<',
        ),
      ),
    ),
    1 => 
    array (
      'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
      'line' => 866,
      'function' => '_oauthRequest',
      'class' => 'BaseFacebook',
      'type' => '->',
      'args' => 
      array (
        0 => 'https://graph.facebook.com/me',
        1 => 
        array (
          'method' => 'GET',
        ),
      ),
    ),
    2 => 
    array (
      'function' => '_graph',
      'class' => 'BaseFacebook',
      'type' => '->',
      'args' => 
      array (
        0 => '/me',
      ),
    ),
    3 => 
    array (
      'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
      'line' => 644,
      'function' => 'call_user_func_array',
      'args' => 
      array (
        0 => 
        array (
          0 => 
          Facebook::__set_state(array(
             'sharedSessionID' => NULL,
             'appId' => '446458238729594',
             'appSecret' => '>>>APP_SECRET<<<',
             'user' => 0,
             'signedRequest' => NULL,
             'state' => NULL,
             'accessToken' => '446458238729594|>>>APP_SECRET<<<',
             'fileUploadSupport' => false,
             'trustForwarded' => false,
          )),
          1 => '_graph',
        ),
        1 => 
        array (
          0 => '/me',
        ),
      ),
    ),
    4 => 
    array (
      'file' => '/srv/www/htdocs/mysite/web/index.php',
      'line' => 69,
      'function' => 'api',
      'class' => 'BaseFacebook',
      'type' => '->',
      'args' => 
      array (
        0 => '/me',
      ),
    ),
  ),
   'previous' => NULL,
))
--------

User ID is now NULL.


=====>>>>> Session array:
array (
  'counter' => 1,
)

Seems like user is NOT logged in. Getting login url...done.

URL:
Login / Logout


=====>>>>> Session array:
array (
  'counter' => 1,
  'fb_446458238729594_state' => '6ae5ea9e5f7199fb6d19793905dcdd65',
)

Seems like user is still NOT logged in. At now we can't do anything. Try to login using the URL above.

========

Session array:
array (
  'counter' => 1,
  'fb_446458238729594_state' => '6ae5ea9e5f7199fb6d19793905dcdd65',
)

ログインが機能しない理由を理解するのを手伝ってください。Facebook クラスのインスタンスがアクセス トークンを取得しないのはなぜですか? Facebook::getUser() メソッドが常に 0 を返すのはなぜですか? どうすれば修正できますか？

4

1 に答える 1

4

ここで刺すつもりです - 辛抱してください：

考えられる原因 1: FB コードは問題ないように見えますが、エラーは次のように述べています。

「2a03:2880:2050:1f01:face:b00c:0:2 に接続できませんでした: ネットワークに到達できません」という cURL の問題を示しています。

cURL が Web サーバーにインストールされている/動作していることを確認できますか? シンプルな phpinfo(); 教えてくれます。

考えられる原因 2: アプリの URL が、テストを実行している場所に設定されていることを確認してください。リダイレクト URI は「http://mysite.localhost/」です。アプリのセットアップ ページで、それが対応していることを確認してください。

最後に、

基本から始めて、すべての追加コードを追加してください。これは私にとってはうまくいきます：

<?php

require 'src/facebook.php';

$facebook = new Facebook(array(
  'appId'  => 'xxxxxxxxxxxxxxxxxxx',
  'secret' => 'xxxxxxxxxxxxxxxxxxx',
));

// See if there is a user from a cookie
$user = $facebook->getUser();

if ($user) {
  try {
    // Proceed knowing you have a logged in user who's authenticated.
    $user_profile = $facebook->api('/me');
$logoutUrl = $facebook->getLogoutUrl();
  } catch (FacebookApiException $e) {
    echo '<pre>'.htmlspecialchars(print_r($e, true)).'</pre>';
    $user = null;
$loginUrl = $facebook->getLoginUrl($params);
  }
}

?>

<?php if ($user) { ?>
    Your user profile is
    <?php print htmlspecialchars(print_r($user_profile, true)) ?>
    <a href="<?php echo $logoutUrl; ?>">Logout</a>
<?php } else { ?>
    <a href="<?php echo $loginUrl; ?>">Login with Facebook</a>
<?php } ?>'
于 2012-10-23T16:32:56.837 に答える