From 5c7f2f17f9c471d306955df457c7cab4e5c6ed3b Mon Sep 17 00:00:00 2001
From: Snap <snapwilliam@gmail.com>
Date: Thu, 16 Apr 2015 14:51:26 -0700
Subject: Google's OpenID Connect method $google_client_id &
 $google_client_secret must be added to db.inc.php!

---
 .../src/Google/Verifier/Abstract.php               | 30 +++++++++
 .../src/Google/Verifier/Pem.php                    | 75 ++++++++++++++++++++++
 2 files changed, 105 insertions(+)
 create mode 100644 includes/google-api-php-client-master/src/Google/Verifier/Abstract.php
 create mode 100644 includes/google-api-php-client-master/src/Google/Verifier/Pem.php

(limited to 'includes/google-api-php-client-master/src/Google/Verifier')

diff --git a/includes/google-api-php-client-master/src/Google/Verifier/Abstract.php b/includes/google-api-php-client-master/src/Google/Verifier/Abstract.php
new file mode 100644
index 0000000..e6c9eeb
--- /dev/null
+++ b/includes/google-api-php-client-master/src/Google/Verifier/Abstract.php
@@ -0,0 +1,30 @@
+<?php
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Verifies signatures.
+ *
+ * @author Brian Eaton <beaton@google.com>
+ */
+abstract class Google_Verifier_Abstract
+{
+  /**
+   * Checks a signature, returns true if the signature is correct,
+   * false otherwise.
+   */
+  abstract public function verify($data, $signature);
+}
diff --git a/includes/google-api-php-client-master/src/Google/Verifier/Pem.php b/includes/google-api-php-client-master/src/Google/Verifier/Pem.php
new file mode 100644
index 0000000..3d6e0fd
--- /dev/null
+++ b/includes/google-api-php-client-master/src/Google/Verifier/Pem.php
@@ -0,0 +1,75 @@
+<?php
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+if (!class_exists('Google_Client')) {
+  require_once dirname(__FILE__) . '/../autoload.php';
+}
+
+/**
+ * Verifies signatures using PEM encoded certificates.
+ *
+ * @author Brian Eaton <beaton@google.com>
+ */
+class Google_Verifier_Pem extends Google_Verifier_Abstract
+{
+  private $publicKey;
+
+  /**
+   * Constructs a verifier from the supplied PEM-encoded certificate.
+   *
+   * $pem: a PEM encoded certificate (not a file).
+   * @param $pem
+   * @throws Google_Auth_Exception
+   * @throws Google_Exception
+   */
+  public function __construct($pem)
+  {
+    if (!function_exists('openssl_x509_read')) {
+      throw new Google_Exception('Google API PHP client needs the openssl PHP extension');
+    }
+    $this->publicKey = openssl_x509_read($pem);
+    if (!$this->publicKey) {
+      throw new Google_Auth_Exception("Unable to parse PEM: $pem");
+    }
+  }
+
+  public function __destruct()
+  {
+    if ($this->publicKey) {
+      openssl_x509_free($this->publicKey);
+    }
+  }
+
+  /**
+   * Verifies the signature on data.
+   *
+   * Returns true if the signature is valid, false otherwise.
+   * @param $data
+   * @param $signature
+   * @throws Google_Auth_Exception
+   * @return bool
+   */
+  public function verify($data, $signature)
+  {
+    $hash = defined("OPENSSL_ALGO_SHA256") ? OPENSSL_ALGO_SHA256 : "sha256";
+    $status = openssl_verify($data, $signature, $this->publicKey, $hash);
+    if ($status === -1) {
+      throw new Google_Auth_Exception('Signature verification error: ' . openssl_error_string());
+    }
+    return $status === 1;
+  }
+}
-- 
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