1.0

README.md

@@ -8,8 +8,8 @@ Getting started
 ----------------
 1. Install Opauth-Facebook:
    ```bash
-   cd path_to_opauth/Strategy
-   git clone git://github.com/uzyn/opauth-facebook.git Facebook
+   cd path/to/app/root
+   composer require opauth/facebook:dev-wip/1.0
    ```
 
 2. Create Facebook application at https://developers.facebook.com/apps/
@@ -33,13 +33,13 @@ Required parameters:
 )
 ```
 
-Even though `scope` is an optional configuration parameter for Opauth-Facebook, for most cases you would like to explicitly define it. It should be defined in a comma-separated string. 
+Even though `scope` is an optional configuration parameter for Opauth-Facebook, for most cases you would like to explicitly define it. It should be defined in a comma-separated string.
 
 Refer to [Facebook Permissions Reference](https://developers.facebook.com/docs/authentication/permissions/) for list of valid permissions..
 
 License
 ---------
-Opauth-Facebook is MIT Licensed  
+Opauth-Facebook is MIT Licensed
 Copyright © 2012 U-Zyn Chua (http://uzyn.com)
 
 [1]: https://github.com/uzyn/opauth

composer.json

@@ -1,23 +1,27 @@
 {
-	"name": "opauth/facebook",
-	"description": "Facebook strategy for Opauth",
-	"keywords": ["authentication","auth","facebook"],
-	"homepage": "http://opauth.org",
-	"license": "MIT",
-	"authors": [
-		{
-			"name": "U-Zyn Chua",
-			"email": "[email protected]",
-			"homepage": "http://uzyn.com"
-		}
-	],
-	"require": {
-		"php": ">=5.2.0",
-		"opauth/opauth": ">=0.2.0"
-	},
-	"autoload": {
-		"psr-0": {
-			"": "."
-		}
-	}
-}
+    "name": "opauth/facebook",
+    "description": "Facebook strategy for Opauth",
+    "keywords": ["authentication", "auth", "facebook"],
+    "homepage": "http://opauth.org",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "U-Zyn Chua",
+            "email": "[email protected]",
+            "homepage": "http://uzyn.com"
+        },
+        {
+            "name": "Ceeram",
+            "email": "[email protected]"
+        }
+    ],
+    "require": {
+        "php": ">=5.3.0",
+        "opauth/opauth": "~1.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "Opauth\\Facebook\\Strategy\\": "src"
+        }
+    }
+}

src/Facebook.php

@@ -0,0 +1,146 @@
+<?php
+/**
+ * Facebook strategy for Opauth
+ * based on https://developers.facebook.com/docs/authentication/server-side/
+ *
+ * More information on Opauth: http://opauth.org
+ *
+ * @copyright    Copyright © 2012 U-Zyn Chua (http://uzyn.com)
+ * @link         http://opauth.org
+ * @package      Opauth.FacebookStrategy
+ * @license      MIT License
+ */
+namespace Opauth\Facebook\Strategy;
+
+use Opauth\Opauth\AbstractStrategy;
+
+class Facebook extends AbstractStrategy
+{
+
+    /**
+     * Compulsory config keys, listed as numeric indexed arrays
+     * eg. array('app_id', 'app_secret');
+     */
+    public $expects = array('app_id', 'app_secret');
+
+    /**
+     * Map response from raw data
+     *
+     * @var array
+     */
+    public $responseMap = array(
+        'name' => 'name',
+        'uid' => 'id',
+        'info.name' => 'name',
+        'info.email' => 'email',
+        'info.first_name' => 'first_name',
+        'info.last_name' => 'last_name',
+        'info.location' => 'location.name',
+        'info.urls.website' => 'website'
+    );
+
+    /**
+     * Auth request
+     *
+     * @return void
+     */
+    public function request()
+    {
+        $url = 'https://www.facebook.com/dialog/oauth';
+        $strategyKeys = array(
+            'scope',
+            'state',
+            'response_type',
+            'display',
+            'auth_type',
+            'app_id' => 'client_id'
+        );
+        $params = $this->addParams($strategyKeys);
+        $params['redirect_uri'] = $this->callbackUrl();
+        $this->redirect($url, $params);
+    }
+
+    /**
+     * Internal callback, after Facebook's OAuth
+     *
+     * @return \Opauth\Opauth\Response
+     */
+    public function callback()
+    {
+        if (!array_key_exists('code', $_GET) || empty($_GET['code'])) {
+            return $this->codeError();
+        }
+
+        $url = 'https://graph.facebook.com/oauth/access_token';
+        $params = $this->callbackParams();
+        $response = $this->http->get($url, $params);
+        parse_str($response, $results);
+
+        if (empty($results['access_token'])) {
+            return $this->tokenError($response);
+        }
+
+        $me = $this->me($results['access_token']);
+        if (!$me) {
+            return $this->error('Failed when attempting to query for user information.', 'me_error');
+        }
+
+        $response = $this->response($me);
+        $response->credentials = array(
+            'token' => $results['access_token'],
+            'expires' => isset($results['expires']) ? date('c', time() + $results['expires']) : null
+        );
+        $response->info['image'] = 'https://graph.facebook.com/' . $me['id'] . '/picture?type=square';
+        return $response;
+    }
+
+    /**
+     * Helper method for callback()
+     *
+     * @return array Parameter array
+     */
+    protected function callbackParams()
+    {
+        $params = array(
+            'redirect_uri' => $this->callbackUrl(),
+            'code' => trim($_GET['code'])
+        );
+        $strategyKeys = array(
+            'app_id' => 'client_id',
+            'app_secret' => 'client_secret'
+        );
+        return $this->addParams($strategyKeys, $params);
+    }
+
+    /**
+     * @return \Opauth\Opauth\Response
+     */
+    protected function codeError()
+    {
+        return $this->error($_GET['error_description'], $_GET['error'], $_GET);
+    }
+
+    /**
+     * @param string $raw
+     * @return \Opauth\Opauth\Response
+     */
+    protected function tokenError($raw)
+    {
+        return $this->error('Failed when attempting to obtain access token.', 'access_token_error', $raw);
+    }
+
+    /**
+     * Queries Facebook Graph API for user info
+     *
+     * @param string $access_token
+     * @return array Parsed JSON results
+     */
+    protected function me($access_token)
+    {
+        $me = $this->http->get('https://graph.facebook.com/me', array('access_token' => $access_token));
+        if (empty($me)) {
+            return false;
+        }
+        return $this->recursiveGetObjectVars(json_decode($me));
+    }
+}