osmApi.inc.php

<?php

/**
 */
require_once( __DIR__ . '/common.inc.php');
require_once( __DIR__ . '/lib/yapafo/lib/OSM/Api.php');

session_start();

$osmApi = getOsmApi();
$oauth = $osmApi->getCredentials();

if (isset($_REQUEST['oauth_token']))
{
	// Check that the callback is for us.
	$creds = $oauth->getRequestToken();
	if ($creds['token'] == $_REQUEST['oauth_token'])
	{
		$oauth->requestAccessToken(
			isset($_REQUEST['oauth_verifier']) ? $_REQUEST['oauth_verifier'] : null
		);
	}
	else
	{
		echo '<p>ERROR, oauth token does not match !</p>' . "\n";
	}
}

/**
 *@return OSM_Api 
 */
function getOsmApi() {

	// osm api handler is instantiated if necessary
	if (!isset($_SESSION['api']))
	{
		$_SESSION['api'] = new OSM_Api(array('appName' => Conf::APP_NAME, 'url' => OSM_Api::URL_PROD_UK, 'simulation' => false));
	}
	$osmApi = $_SESSION['api'];
	$oauth = $osmApi->getCredentials();

	if (!$oauth)
	{
		$oauth = new OSM_Auth_OAuth(
				Conf::OAUTH_CONSUMER_KEY,
				Conf::OAUTH_CONSUMER_SECRET,
				array('callback_url' => currentPageURLwithoutQuery())
		);
		$osmApi->setCredentials($oauth);
	}
	return $osmApi ;
}

function startOsmAuth() {

	$osmApi = $_SESSION['api'];
	$oauth = $osmApi->getCredentials();

	if (!$oauth->hasAccessToken())
	{
		try
		{
			// try to get a access token
			$oauth->requestAccessToken();
			header('Location:' . currentPageURL());
		}
		catch (OSM_HttpException $ex)
		{
			if ($ex->getHttpCode() == '401')
			{
				$osmApi->clearCachedAuthPermissions();
				$req = $oauth->requestAuthorizationUrl();
				header('Location:' . $req['url']);
				exit();
			}
		}
	}
}