make the connection with google plus work

still need to finish google-plus/callback.php

constants.php

@@ -4,4 +4,4 @@
   define( 'SOCIAL_CONNECT_PLUGIN_URL', plugins_url() . '/' . basename( dirname( __FILE__ )));
 }
 
-define( 'SOCIAL_CONNECT_GOOGLE_PLUS_REDIRECT_URL', SOCIAL_CONNECT_PLUGIN_URL . '/google-plus/callback.php' );
+define( 'SOCIAL_CONNECT_GOOGLE_PLUS_REDIRECT_URL', home_url( 'index.php?social-connect=google-plus-callback' ) );

google-plus/Google/Auth/Abstract.php

@@ -0,0 +1,41 @@
+<?php
+/*
+ * Copyright 2010 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.
+ */
+require_once "Google/Http/Request.php";
+
+/**
+ * Abstract class for the Authentication in the API client
+ * @author Chris Chabot <[email protected]>
+ *
+ */
+abstract class Google_Auth_Abstract
+{
+  /**
+   * An utility function that first calls $this->auth->sign($request) and then
+   * executes makeRequest() on that signed request. Used for when a request
+   * should be authenticated
+   * @param Google_Http_Request $request
+   * @return Google_Http_Request $request
+   */
+  abstract public function authenticatedRequest(Google_Http_Request $request);
+
+  abstract public function authenticate($code);
+  abstract public function sign(Google_Http_Request $request);
+  abstract public function createAuthUrl($scope);
+
+  abstract public function refreshToken($refreshToken);
+  abstract public function revokeToken();
+}

google-plus/Google/Auth/AssertionCredentials.php

@@ -0,0 +1,133 @@
+<?php
+/*
+ * Copyright 2012 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.
+ */
+
+require_once "Google/Auth/OAuth2.php";
+require_once "Google/Signer/P12.php";
+require_once "Google/Utils.php";
+
+/**
+ * Credentials object used for OAuth 2.0 Signed JWT assertion grants.
+ *
+ * @author Chirag Shah <[email protected]>
+ */
+class Google_Auth_AssertionCredentials
+{
+  const MAX_TOKEN_LIFETIME_SECS = 3600;
+
+  public $serviceAccountName;
+  public $scopes;
+  public $privateKey;
+  public $privateKeyPassword;
+  public $assertionType;
+  public $sub;
+  /**
+   * @deprecated
+   * @link http://tools.ietf.org/html/draft-ietf-oauth-json-web-token-06
+   */
+  public $prn;
+  private $useCache;
+
+  /**
+   * @param $serviceAccountName
+   * @param $scopes array List of scopes
+   * @param $privateKey
+   * @param string $privateKeyPassword
+   * @param string $assertionType
+   * @param bool|string $sub The email address of the user for which the
+   *              application is requesting delegated access.
+   * @param bool useCache Whether to generate a cache key and allow
+   *              automatic caching of the generated token.
+   */
+  public function __construct(
+      $serviceAccountName,
+      $scopes,
+      $privateKey,
+      $privateKeyPassword = 'notasecret',
+      $assertionType = 'http://oauth.net/grant_type/jwt/1.0/bearer',
+      $sub = false,
+      $useCache = true
+  ) {
+    $this->serviceAccountName = $serviceAccountName;
+    $this->scopes = is_string($scopes) ? $scopes : implode(' ', $scopes);
+    $this->privateKey = $privateKey;
+    $this->privateKeyPassword = $privateKeyPassword;
+    $this->assertionType = $assertionType;
+    $this->sub = $sub;
+    $this->prn = $sub;
+    $this->useCache = $useCache;
+  }
+
+  /**
+   * Generate a unique key to represent this credential.
+   * @return string
+   */
+  public function getCacheKey()
+  {
+    if (!$this->useCache) {
+      return false;
+    }
+    $h = $this->sub;
+    $h .= $this->assertionType;
+    $h .= $this->privateKey;
+    $h .= $this->scopes;
+    $h .= $this->serviceAccountName;
+    return md5($h);
+  }
+
+  public function generateAssertion()
+  {
+    $now = time();
+
+    $jwtParams = array(
+          'aud' => Google_Auth_OAuth2::OAUTH2_TOKEN_URI,
+          'scope' => $this->scopes,
+          'iat' => $now,
+          'exp' => $now + self::MAX_TOKEN_LIFETIME_SECS,
+          'iss' => $this->serviceAccountName,
+    );
+
+    if ($this->sub !== false) {
+      $jwtParams['sub'] = $this->sub;
+    } else if ($this->prn !== false) {
+      $jwtParams['prn'] = $this->prn;
+    }
+
+    return $this->makeSignedJwt($jwtParams);
+  }
+
+  /**
+   * Creates a signed JWT.
+   * @param array $payload
+   * @return string The signed JWT.
+   */
+  private function makeSignedJwt($payload)
+  {
+    $header = array('typ' => 'JWT', 'alg' => 'RS256');
+
+    $segments = array(
+      Google_Utils::urlSafeB64Encode(json_encode($header)),
+      Google_Utils::urlSafeB64Encode(json_encode($payload))
+    );
+
+    $signingInput = implode('.', $segments);
+    $signer = new Google_Signer_P12($this->privateKey, $this->privateKeyPassword);
+    $signature = $signer->sign($signingInput);
+    $segments[] = Google_Utils::urlSafeB64Encode($signature);
+
+    return implode(".", $segments);
+  }
+}

google-plus/Google/Auth/Exception.php

@@ -0,0 +1,22 @@
+<?php
+/*
+ * Copyright 2013 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.
+ */
+
+require_once "Google/Exception.php";
+
+class Google_Auth_Exception extends Google_Exception
+{
+}

google-plus/Google/Auth/LoginTicket.php

@@ -0,0 +1,69 @@
+<?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.
+ */
+
+require_once "Google/Auth/Exception.php";
+
+/**
+ * Class to hold information about an authenticated login.
+ *
+ * @author Brian Eaton <[email protected]>
+ */
+class Google_Auth_LoginTicket
+{
+  const USER_ATTR = "sub";
+
+  // Information from id token envelope.
+  private $envelope;
+
+  // Information from id token payload.
+  private $payload;
+
+  /**
+   * Creates a user based on the supplied token.
+   *
+   * @param string $envelope Header from a verified authentication token.
+   * @param string $payload Information from a verified authentication token.
+   */
+  public function __construct($envelope, $payload)
+  {
+    $this->envelope = $envelope;
+    $this->payload = $payload;
+  }
+
+  /**
+   * Returns the numeric identifier for the user.
+   * @throws Google_Auth_Exception
+   * @return
+   */
+  public function getUserId()
+  {
+    if (array_key_exists(self::USER_ATTR, $this->payload)) {
+      return $this->payload[self::USER_ATTR];
+    }
+    throw new Google_Auth_Exception("No user_id in token");
+  }
+
+  /**
+   * Returns attributes from the login ticket.  This can contain
+   * various information about the user session.
+   * @return array
+   */
+  public function getAttributes()
+  {
+    return array("envelope" => $this->envelope, "payload" => $this->payload);
+  }
+}