Google oauth2 fails at $client->authenticate($_GET['code']);

So, you may have already figured this, but Google returns the correct URI with the "code" parameter in the GET.

The entire process stalls at that point and never does the redirect (even without my "echo").

I am assuming that it stops because I get a blank page and there's not a single character when I veiw HTML source in the browser.

---

Edited to move the code into the code snippet feature. ~Ray
<?php
      error_reporting(E_ALL);
      ini_set('display_errors', '1');
      if (!session_id() || session_id() == '' || session_id() == ' ') {
            session_start();
      }

      $_SESSION['GOOGLE_CLIENT_ID'] = '30322________________leusercontent.com';
      $_SESSION['GOOGLE_CLIENT_SECRET'] = 'Az________________________________9xA';
      $_SESSION['GOOGLE_REDIRECT_URI'] = 'http://tx-asm.us/resources/lib/google-api-php-client/examples/plus';
      $_SESSION['GOOGLE_DEVELOPER_KEY'] = 'AI_______________________________Bg';
      
require_once '../../src/Google_Client.php';
require_once '../../src/contrib/Google_PlusService.php';


$client = new Google_Client();
$client->setApplicationName("Google+ PHP Starter Application");
      
      $client->setClientId($_SESSION['GOOGLE_CLIENT_ID']);
      $client->setClientSecret($_SESSION['GOOGLE_CLIENT_SECRET']);
      $client->setRedirectUri('http://tx-asm.us/resources/lib/google-api-php-client/examples/plus/index.php');
      $client->setDeveloperKey($_SESSION['GOOGLE_DEVELOPER_KEY']);
$plus = new Google_PlusService($client);

if (isset($_REQUEST['logout'])) {
  unset($_SESSION['access_token']);
}
// here's where things go south...

if (isset($_GET['code'])) {
  $client->authenticate($_GET['code']);

// THE GET VALUE DOES COME ACROSS IN THE URL

  $_SESSION['access_token'] = $client->getAccessToken();

// I ADDED THIS LINE TO DEBUG, KNOWING THAT IF IT WOULD SUCCEED THE REDIRECT WOULD FAIL BECAUSE OF A STARTED HEADER

// BUT, NOTHING ECHOS TO THE SCREEN AT ALL

  echo "sess access token " . $_SESSION['access_token'];
  header('Location: http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']);
}

if (isset($_SESSION['access_token'])) {
  $client->setAccessToken($_SESSION['access_token']);
}

if ($client->getAccessToken()) {
  $me = $plus->people->get('me');

  // These fields are currently filtered through the PHP sanitize filters.
  // See http://www.php.net/manual/en/filter.filters.sanitize.php
  $url = filter_var($me['url'], FILTER_VALIDATE_URL);
  $img = filter_var($me['image']['url'], FILTER_VALIDATE_URL);
  $name = filter_var($me['displayName'], FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
  $personMarkup = "<a rel='me' href='$url'>$name</a><div><img src='$img'></div>";

  $optParams = array('maxResults' => 100);
  $activities = $plus->activities->listActivities('me', 'public', $optParams);
  $activityMarkup = '';
  foreach($activities['items'] as $activity) {
    // These fields are currently filtered through the PHP sanitize filters.
    // See http://www.php.net/manual/en/filter.filters.sanitize.php
    $url = filter_var($activity['url'], FILTER_VALIDATE_URL);
    $title = filter_var($activity['title'], FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
    $content = filter_var($activity['object']['content'], FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
    $activityMarkup .= "<div class='activity'><a href='$url'>$title</a><div>$content</div></div>";
  }

  // The access token may have been updated lazily.
  $_SESSION['access_token'] = $client->getAccessToken();
} else {
  $authUrl = $client->createAuthUrl();
}
?>
<!doctype html>
<html>
<head>
  <meta charset="utf-8">
  <link rel='stylesheet' href='style.css' />
</head>
<body>
<header><h1>Google+ Sample App</h1></header>
<div class="box">

<?php if(isset($personMarkup)): ?>
<div class="me"><?php print $personMarkup ?></div>
<?php endif ?>

<?php if(isset($activityMarkup)): ?>
<div class="activities">Your Activities: <?php print $activityMarkup ?></div>
<?php endif ?>

<?php
  if(isset($authUrl)) {
    print "<a class='login' href='$authUrl'>Connect Me!</a>";
  } else {
   print "<a class='logout' href='?logout'>Logout</a>";
  }
?>
</div>
</body>
</html>

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Dallas SmetterSolution EngineerAsked:
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Dallas SmetterSolution EngineerAuthor Commented:
So, you may have already figured this, but Google returns the correct URI with the "code" parameter in the GET.

The entire process stalls at that point and never does the redirect (even without my "echo").

I am assuming that it stops because I get a blank page and there's not a single character when I veiw HTML source in the browser.
Dallas SmetterSolution EngineerAuthor Commented:
The function its calling, where the failure seems to be is

  public function getAccessToken() {
    $token = self::$auth->getAccessToken();
    return (null == $token || 'null' == $token) ? null : $token;
  }

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So, maybe it is returning a null value? If so, would there be a problem with on of my keys/id ?
Dallas SmetterSolution EngineerAuthor Commented:
I fixed this myself.

I foolishly had a session_destroy() written right after I had made the session_start().

I have no idea what possessed me to do it, but at least it's all working now.

This question can be closed. No comments and therefore no points to award.

Thank you
Dallas Ray

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