Initial commit

2013-03-06 18:42:06 +05:30
commit 69cb3c4dcb
101 changed files with 6222 additions and 0 deletions
--- a/lib/PayPal/Auth/OAuthTokenCredential.php
+++ b/lib/PayPal/Auth/OAuthTokenCredential.php
@@ -0,0 +1,118 @@
+<?php
+
+namespace PayPal\Auth;
+
+/**
+ * Oauth Token credential
+ *
+ */
+class OAuthTokenCredential {
+	
+	private static $expiryBufferTime = 120;
+	
+	private $logger;
+	
+	/**
+	 * Client ID as obtained from the developer portal
+	 */
+	private $clientId;
+	
+	/**
+	 * Client secret as obtained from the developer portal
+	 */
+	private $clientSecret;
+	
+	
+	/**
+	 * Generated Access Token
+	 */
+	private $accessToken;	
+	
+	/**
+	 * Seconds for with access token is valid
+	 */
+	private $tokenExpiresIn;
+	
+	/**
+	 * Last time (in milliseconds) when access token was generated
+	 */
+	private $tokenCreateTime;
+	
+	/**
+	 * 
+	 * @param string $clientId client id obtained from the developer portal
+	 * @param string $clientSecret client secret obtained from the developer portal
+	 */
+	public function __construct($clientId, $clientSecret) {
+		$this->clientId = $clientId;
+		$this->clientSecret = $clientSecret;
+		$this->logger = new \PPLoggingManager(__CLASS__);		
+	}
+	
+	/**
+	 * @return the accessToken
+	 */
+	public function getAccessToken() {		
+		// Check if Access Token is not null and has not expired.
+		// The API returns expiry time as a relative time unit 
+		// We use a buffer time when checking for token expiry to account
+		// for API call delays and any delay between the time the token is
+		// retrieved and subsequently used
+		if ($this->accessToken != null && 
+				(time() - $this->tokenCreateTime) > ($this->tokenExpiresIn - self::$expiryBufferTime)) {			
+				$this->accessToken = null;			
+		}
+		// If accessToken is Null, obtain a new token
+		if ($this->accessToken == null) {			
+			$this->generateAccessToken();
+		}
+		return $this->accessToken;
+	}
+	
+	/**
+	 * Generates a new access token
+	 */
+	private function generateAccessToken() {
+		return $this->generateOAuthToken(base64_encode($this->clientId . ":" . $this->clientSecret));		
+	}
+	
+	/**
+	 * Generate OAuth type token from Base64Client ID
+	 */
+	private function generateOAuthToken($base64ClientID) {
+							
+		$headers = array(
+			"Authorization" => "Basic " . $base64ClientID,
+			"Accept" => "*/*"
+		);		
+		$httpConfiguration = $this->getOAuthHttpConfiguration();
+		$httpConfiguration->setHeaders($headers);
+		
+		$connection = \PPConnectionManager::getInstance()->getConnection($httpConfiguration);		
+		$res = $connection->execute("grant_type=client_credentials");		
+		$jsonResponse = json_decode($res, true);
+		if($jsonResponse == NULL || 
+				!isset($jsonResponse["access_token"]) || !isset($jsonResponse["expires_in"]) ) {
+			$this->accessToken = NULL;
+			$this->tokenExpiresIn = NULL;	
+			$this->logger->warning("Could not generate new Access token. Invalid response from server: " . $jsonResponse);		
+		} else {
+			$this->accessToken = $jsonResponse["access_token"];
+			$this->tokenExpiresIn = $jsonResponse["expires_in"];
+		}
+		$this->tokenCreateTime = time();
+		return $this->accessToken;
+	}
+	
+	/*
+	 * Get HttpConfiguration object for OAuth API
+	*/
+	private function getOAuthHttpConfiguration() {
+		$configMgr = \PPConfigManager::getInstance();
+		
+		$baseEndpoint = ($configMgr->get("oauth.EndPoint") != '' && !is_array($configMgr->get("oauth.EndPoint"))) ? 
+			$configMgr->get("oauth.EndPoint") : $configMgr->get("service.EndPoint");
+		$baseEndpoint = rtrim(trim($baseEndpoint), '/');		 
+		return new \PPHttpConfig($baseEndpoint . "/v1/oauth2/token", "POST");
+	}
+}