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fb-callback.php
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<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>All Albums | Facebook | Download, SlideShow & Backup to Google Drive</title>
<link rel="stylesheet" type="text/css" href="lib/CSS/slider.css">
</head>
<body>
<?php
session_start();
require_once 'appconfig.php';
$fb = new Facebook\Facebook([
'app_id' => $appId, // variable with Facebook App ID
'app_secret' => $appSecret,
'default_graph_version' => 'v3.3',
]);
$helper = $fb->getRedirectLoginHelper();
try {
$accessToken = $helper->getAccessToken();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
if (!isset($accessToken)) {
if ($helper->getError()) {
header('HTTP/1.0 401 Unauthorized');
echo "Error: " . $helper->getError() . "\n";
echo "Error Code: " . $helper->getErrorCode() . "\n";
echo "Error Reason: " . $helper->getErrorReason() . "\n";
echo "Error Description: " . $helper->getErrorDescription() . "\n";
} else {
header('HTTP/1.0 400 Bad Request');
echo 'Bad request hihihih';
}
exit;
}
// Logged in
echo '<h3>Access Token</h3>';
var_dump($accessToken->getValue());
// The OAuth 2.0 client handler helps us manage access tokens
$oAuth2Client = $fb->getOAuth2Client();
// Get the access token metadata from /debug_token
$tokenMetadata = $oAuth2Client->debugToken($accessToken);
echo '<h3>Facebook Photos Challenge</h3>';
var_dump($tokenMetadata);
// Validation (these will throw FacebookSDKException's when they fail)
$tokenMetadata->validateAppId($appId); // My Facebook App ID
// If you know the user ID this access token belongs to, you can validate it here
//$tokenMetadata->validateUserId('123');
$tokenMetadata->validateExpiration();
if (! $accessToken->isLongLived()) {
// Exchanges a short-lived access token for a long-lived one
try {
$accessToken = $oAuth2Client->getLongLivedAccessToken($accessToken);
} catch (Facebook\Exceptions\FacebookSDKException $e) {
echo "<p>Error getting long-lived access token: " . $e->getMessage() . "</p>\n\n";
exit;
}
echo '<h3>Long-lived</h3>';
var_dump($accessToken->getValue());
}
$_SESSION['fb_access_token'] = (string)$accessToken;
header('Location: member.php');
?>
</body>
</html>