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app/Vendor/Facebook/FacebookCanvasLoginHelper.php

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+<?php
+/**
+ * Copyright 2014 Facebook, Inc.
+ *
+ * You are hereby granted a non-exclusive, worldwide, royalty-free license to
+ * use, copy, modify, and distribute this software in source code or binary
+ * form for use in connection with the web services and APIs provided by
+ * Facebook.
+ *
+ * As with any software that integrates with the Facebook platform, your use
+ * of this software is subject to the Facebook Developer Principles and
+ * Policies [http://developers.facebook.com/policy/]. This copyright notice
+ * shall be included in all copies or substantial portions of the software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+namespace Facebook;
+
+/**
+ * Class FacebookCanvasLoginHelper
+ * @package Facebook
+ * @author Fosco Marotto <fjm@fb.com>
+ * @author David Poll <depoll@fb.com>
+ */
+class FacebookCanvasLoginHelper extends FacebookSignedRequestFromInputHelper
+{
+
+  /**
+   * Returns the app data value.
+   *
+   * @return mixed|null
+   */
+  public function getAppData()
+  {
+    return $this->signedRequest ? $this->signedRequest->get('app_data') : null;
+  }
+
+  /**
+   * Get raw signed request from POST.
+   *
+   * @return string|null
+   */
+  public function getRawSignedRequest()
+  {
+    $rawSignedRequest = $this->getRawSignedRequestFromPost();
+    if ($rawSignedRequest) {
+      return $rawSignedRequest;
+    }
+
+    return null;
+  }
+
+}