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Elance Provider for OAuth 2.0 Client

This package provides Elance OAuth 2.0 support for the PHP League's OAuth 2.0 Client.

Installation

To install, use composer:

composer require stevenmaguire/oauth2-elance

Usage

Usage is the same as The League's OAuth client, using \Stevenmaguire\OAuth2\Client\Provider\Elance as the provider.

Authorization Code Flow

$provider = new Stevenmaguire\OAuth2\Client\Provider\Elance([
    'clientId'          => '{elance-client-id}',
    'clientSecret'      => '{elance-client-secret}',
    'redirectUri'       => 'https://example.com/callback-url'
]);

if (!isset($_GET['code'])) {

    // If we don't have an authorization code then get one
    $authUrl = $provider->getAuthorizationUrl();
    $_SESSION['oauth2state'] = $provider->getState();
    header('Location: '.$authUrl);
    exit;

// Check given state against previously stored one to mitigate CSRF attack
} elseif (empty($_GET['state']) || ($_GET['state'] !== $_SESSION['oauth2state'])) {

    unset($_SESSION['oauth2state']);
    exit('Invalid state');

} else {

    // Try to get an access token (using the authorization code grant)
    $token = $provider->getAccessToken('authorization_code', [
        'code' => $_GET['code']
    ]);

    // Optional: Now you have a token you can look up a users profile data
    try {

        // We got an access token, let's now get the user's details
        $user = $provider->getResourceOwner($token);

        // Use these details to create a new profile
        printf('Hello %s!', $user->getId());

    } catch (Exception $e) {

        // Failed to get user details
        exit('Oh dear...');
    }

    // Use this to interact with an API on the users behalf
    echo $token->getToken();
}

Important note about the Elance API

This package attempts to use the /profiles/my API endpoint to populate the ElanceResourceOwner object. This attempt will be successful if the resource owner has a "Contractor Profile" on Elance. If the resource owner does not have a "Contractor Profile" the request for this information will result in a 404 response and the code example above will fail.

The request to getAccessToken will succeed regardless of "Contractor Profile" status.

Refreshing a Token

Once your application is authorized, you can refresh an expired token using a refresh token rather than going through the entire process of obtaining a brand new token. To do so, simply reuse this refresh token from your data store to request a refresh.

$grant = new \League\OAuth2\Client\Grant\RefreshToken();
$token = $provider->getAccessToken($grant, ['refresh_token' => $refreshToken]);

Testing

$ ./vendor/bin/phpunit