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wp-content/plugins/wp-mail-smtp/vendor/google/auth/src/Subscriber/AuthTokenSubscriber.php

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+<?php
+/*
+ * Copyright 2015 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.
+ */
+
+namespace Google\Auth\Subscriber;
+
+use Google\Auth\FetchAuthTokenInterface;
+use GuzzleHttp\Event\BeforeEvent;
+use GuzzleHttp\Event\RequestEvents;
+use GuzzleHttp\Event\SubscriberInterface;
+
+/**
+ * AuthTokenSubscriber is a Guzzle Subscriber that adds an Authorization header
+ * provided by an object implementing FetchAuthTokenInterface.
+ *
+ * The FetchAuthTokenInterface#fetchAuthToken is used to obtain a hash; one of
+ * the values value in that hash is added as the authorization header.
+ *
+ * Requests will be accessed with the authorization header:
+ *
+ * 'authorization' 'Bearer <value of auth_token>'
+ */
+class AuthTokenSubscriber implements SubscriberInterface
+{
+    /**
+     * @var callable
+     */
+    private $httpHandler;
+
+    /**
+     * @var FetchAuthTokenInterface
+     */
+    private $fetcher;
+
+    /**
+     * @var callable
+     */
+    private $tokenCallback;
+
+    /**
+     * Creates a new AuthTokenSubscriber.
+     *
+     * @param FetchAuthTokenInterface $fetcher is used to fetch the auth token
+     * @param callable $httpHandler (optional) http client to fetch the token.
+     * @param callable $tokenCallback (optional) function to be called when a new token is fetched.
+     */
+    public function __construct(
+        FetchAuthTokenInterface $fetcher,
+        callable $httpHandler = null,
+        callable $tokenCallback = null
+    ) {
+        $this->fetcher = $fetcher;
+        $this->httpHandler = $httpHandler;
+        $this->tokenCallback = $tokenCallback;
+    }
+
+    /**
+     * @return array
+     */
+    public function getEvents()
+    {
+        return ['before' => ['onBefore', RequestEvents::SIGN_REQUEST]];
+    }
+
+    /**
+     * Updates the request with an Authorization header when auth is 'fetched_auth_token'.
+     *
+     *   use GuzzleHttp\Client;
+     *   use Google\Auth\OAuth2;
+     *   use Google\Auth\Subscriber\AuthTokenSubscriber;
+     *
+     *   $config = [..<oauth config param>.];
+     *   $oauth2 = new OAuth2($config)
+     *   $subscriber = new AuthTokenSubscriber($oauth2);
+     *
+     *   $client = new Client([
+     *      'base_url' => 'https://www.googleapis.com/taskqueue/v1beta2/projects/',
+     *      'defaults' => ['auth' => 'google_auth']
+     *   ]);
+     *   $client->getEmitter()->attach($subscriber);
+     *
+     *   $res = $client->get('myproject/taskqueues/myqueue');
+     *
+     * @param BeforeEvent $event
+     */
+    public function onBefore(BeforeEvent $event)
+    {
+        // Requests using "auth"="google_auth" will be authorized.
+        $request = $event->getRequest();
+        if ($request->getConfig()['auth'] != 'google_auth') {
+            return;
+        }
+
+        // Fetch the auth token.
+        $auth_tokens = $this->fetcher->fetchAuthToken($this->httpHandler);
+        if (array_key_exists('access_token', $auth_tokens)) {
+            $request->setHeader('authorization', 'Bearer ' . $auth_tokens['access_token']);
+
+            // notify the callback if applicable
+            if ($this->tokenCallback) {
+                call_user_func($this->tokenCallback, $this->fetcher->getCacheKey(), $auth_tokens['access_token']);
+            }
+        }
+    }
+}

wp-content/plugins/wp-mail-smtp/vendor/google/auth/src/Subscriber/ScopedAccessTokenSubscriber.php

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+<?php
+/*
+ * Copyright 2015 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.
+ */
+
+namespace Google\Auth\Subscriber;
+
+use Google\Auth\CacheTrait;
+use GuzzleHttp\Event\BeforeEvent;
+use GuzzleHttp\Event\RequestEvents;
+use GuzzleHttp\Event\SubscriberInterface;
+use Psr\Cache\CacheItemPoolInterface;
+
+/**
+ * ScopedAccessTokenSubscriber is a Guzzle Subscriber that adds an Authorization
+ * header provided by a closure.
+ *
+ * The closure returns an access token, taking the scope, either a single
+ * string or an array of strings, as its value.  If provided, a cache will be
+ * used to preserve the access token for a given lifetime.
+ *
+ * Requests will be accessed with the authorization header:
+ *
+ * 'authorization' 'Bearer <access token obtained from the closure>'
+ */
+class ScopedAccessTokenSubscriber implements SubscriberInterface
+{
+    use CacheTrait;
+
+    const DEFAULT_CACHE_LIFETIME = 1500;
+
+    /**
+     * @var CacheItemPoolInterface
+     */
+    private $cache;
+
+    /**
+     * @var callable The access token generator function
+     */
+    private $tokenFunc;
+
+    /**
+     * @var array|string The scopes used to generate the token
+     */
+    private $scopes;
+
+    /**
+     * @var array
+     */
+    private $cacheConfig;
+
+    /**
+     * Creates a new ScopedAccessTokenSubscriber.
+     *
+     * @param callable $tokenFunc a token generator function
+     * @param array|string $scopes the token authentication scopes
+     * @param array $cacheConfig configuration for the cache when it's present
+     * @param CacheItemPoolInterface $cache an implementation of CacheItemPoolInterface
+     */
+    public function __construct(
+        callable $tokenFunc,
+        $scopes,
+        array $cacheConfig = null,
+        CacheItemPoolInterface $cache = null
+    ) {
+        $this->tokenFunc = $tokenFunc;
+        if (!(is_string($scopes) || is_array($scopes))) {
+            throw new \InvalidArgumentException(
+                'wants scope should be string or array');
+        }
+        $this->scopes = $scopes;
+
+        if (!is_null($cache)) {
+            $this->cache = $cache;
+            $this->cacheConfig = array_merge([
+                'lifetime' => self::DEFAULT_CACHE_LIFETIME,
+                'prefix' => '',
+            ], $cacheConfig);
+        }
+    }
+
+    /**
+     * @return array
+     */
+    public function getEvents()
+    {
+        return ['before' => ['onBefore', RequestEvents::SIGN_REQUEST]];
+    }
+
+    /**
+     * Updates the request with an Authorization header when auth is 'scoped'.
+     *
+     *   E.g this could be used to authenticate using the AppEngine
+     *   AppIdentityService.
+     *
+     *   use google\appengine\api\app_identity\AppIdentityService;
+     *   use Google\Auth\Subscriber\ScopedAccessTokenSubscriber;
+     *   use GuzzleHttp\Client;
+     *
+     *   $scope = 'https://www.googleapis.com/auth/taskqueue'
+     *   $subscriber = new ScopedAccessToken(
+     *       'AppIdentityService::getAccessToken',
+     *       $scope,
+     *       ['prefix' => 'Google\Auth\ScopedAccessToken::'],
+     *       $cache = new Memcache()
+     *   );
+     *
+     *   $client = new Client([
+     *       'base_url' => 'https://www.googleapis.com/taskqueue/v1beta2/projects/',
+     *       'defaults' => ['auth' => 'scoped']
+     *   ]);
+     *   $client->getEmitter()->attach($subscriber);
+     *
+     *   $res = $client->get('myproject/taskqueues/myqueue');
+     *
+     * @param BeforeEvent $event
+     */
+    public function onBefore(BeforeEvent $event)
+    {
+        // Requests using "auth"="scoped" will be authorized.
+        $request = $event->getRequest();
+        if ($request->getConfig()['auth'] != 'scoped') {
+            return;
+        }
+        $auth_header = 'Bearer ' . $this->fetchToken();
+        $request->setHeader('authorization', $auth_header);
+    }
+
+    /**
+     * @return string
+     */
+    private function getCacheKey()
+    {
+        $key = null;
+
+        if (is_string($this->scopes)) {
+            $key .= $this->scopes;
+        } elseif (is_array($this->scopes)) {
+            $key .= implode(':', $this->scopes);
+        }
+
+        return $key;
+    }
+
+    /**
+     * Determine if token is available in the cache, if not call tokenFunc to
+     * fetch it.
+     *
+     * @return string
+     */
+    private function fetchToken()
+    {
+        $cacheKey = $this->getCacheKey();
+        $cached = $this->getCachedValue($cacheKey);
+
+        if (!empty($cached)) {
+            return $cached;
+        }
+
+        $token = call_user_func($this->tokenFunc, $this->scopes);
+        $this->setCachedValue($cacheKey, $token);
+
+        return $token;
+    }
+}

wp-content/plugins/wp-mail-smtp/vendor/google/auth/src/Subscriber/SimpleSubscriber.php

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+<?php
+/*
+ * Copyright 2015 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.
+ */
+
+namespace Google\Auth\Subscriber;
+
+use GuzzleHttp\Event\BeforeEvent;
+use GuzzleHttp\Event\RequestEvents;
+use GuzzleHttp\Event\SubscriberInterface;
+
+/**
+ * SimpleSubscriber is a Guzzle Subscriber that implements Google's Simple API
+ * access.
+ *
+ * Requests are accessed using the Simple API access developer key.
+ */
+class SimpleSubscriber implements SubscriberInterface
+{
+    /**
+     * @var array
+     */
+    private $config;
+
+    /**
+     * Create a new Simple plugin.
+     *
+     * The configuration array expects one option
+     * - key: required, otherwise InvalidArgumentException is thrown
+     *
+     * @param array $config Configuration array
+     */
+    public function __construct(array $config)
+    {
+        if (!isset($config['key'])) {
+            throw new \InvalidArgumentException('requires a key to have been set');
+        }
+
+        $this->config = array_merge([], $config);
+    }
+
+    /**
+     * @return array
+     */
+    public function getEvents()
+    {
+        return ['before' => ['onBefore', RequestEvents::SIGN_REQUEST]];
+    }
+
+    /**
+     * Updates the request query with the developer key if auth is set to simple.
+     *
+     *   use Google\Auth\Subscriber\SimpleSubscriber;
+     *   use GuzzleHttp\Client;
+     *
+     *   $my_key = 'is not the same as yours';
+     *   $subscriber = new SimpleSubscriber(['key' => $my_key]);
+     *
+     *   $client = new Client([
+     *      'base_url' => 'https://www.googleapis.com/discovery/v1/',
+     *      'defaults' => ['auth' => 'simple']
+     *   ]);
+     *   $client->getEmitter()->attach($subscriber);
+     *
+     *   $res = $client->get('drive/v2/rest');
+     *
+     * @param BeforeEvent $event
+     */
+    public function onBefore(BeforeEvent $event)
+    {
+        // Requests using "auth"="simple" with the developer key.
+        $request = $event->getRequest();
+        if ($request->getConfig()['auth'] != 'simple') {
+            return;
+        }
+        $request->getQuery()->overwriteWith($this->config);
+    }
+}