From ffb06852a697db2bdc5467d4f0a1b2eb9d404b4f Mon Sep 17 00:00:00 2001
From: Radoslav Terezka <rthideaway@users.noreply.github.com>
Date: Wed, 24 Jun 2020 15:28:47 +0200
Subject: [PATCH] feat(data producer): Add password reset mutation data
 producer with violations (#1013)

---
 src/GraphQL/Response/Response.php             |  45 ++++++
 src/GraphQL/Response/ResponseInterface.php    |  40 +++++
 .../DataProducer/User/PasswordReset.php       | 145 ++++++++++++++++++
 3 files changed, 230 insertions(+)
 create mode 100644 src/GraphQL/Response/Response.php
 create mode 100644 src/GraphQL/Response/ResponseInterface.php
 create mode 100644 src/Plugin/GraphQL/DataProducer/User/PasswordReset.php

diff --git a/src/GraphQL/Response/Response.php b/src/GraphQL/Response/Response.php
new file mode 100644
index 000000000..f8c38a1ec
--- /dev/null
+++ b/src/GraphQL/Response/Response.php
@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace Drupal\graphql\GraphQL\Response;
+
+use Drupal\jobiqo_graphql\Wrappers\Violation\ViolationCollection;
+
+/**
+ * Base class for responses containing the violations.
+ */
+class Response implements ResponseInterface {
+
+  /**
+   * List of violations.
+   *
+   * @var array
+   */
+  protected $violations = [];
+
+  /**
+   * {@inheritdoc}
+   */
+  public function addViolation($message, array $properties = []): void {
+    $properties['message'] = (string) $message;
+    $this->violations[] = $properties;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function addViolations(array $messages, array $properties = []): void {
+    foreach ($messages as $message) {
+      $this->addViolation($message, $properties);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getViolations(): array {
+    return $this->violations;
+  }
+
+}
diff --git a/src/GraphQL/Response/ResponseInterface.php b/src/GraphQL/Response/ResponseInterface.php
new file mode 100644
index 000000000..21afef779
--- /dev/null
+++ b/src/GraphQL/Response/ResponseInterface.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace Drupal\graphql\GraphQL\Response;
+
+/**
+ * Response interface used for GraphQL responses.
+ */
+interface ResponseInterface {
+
+  /**
+   * Adds the violation.
+   *
+   * @param string|\Drupal\Core\StringTranslation\TranslatableMarkup $message
+   *   Violation message.
+   * @param array $properties
+   *   Other properties related to the violation.
+   */
+  public function addViolation($message, array $properties = []): void;
+
+  /**
+   * Adds multiple violations.
+   *
+   * @param string[]|\Drupal\Core\StringTranslation\TranslatableMarkup[] $messages
+   *   Violation messages.
+   * @param array $properties
+   *   Other properties related to the violation.
+   */
+  public function addViolations(array $messages, array $properties = []): void;
+
+  /**
+   * Gets the violations.
+   *
+   * @return array
+   *   Violations.
+   */
+  public function getViolations(): array;
+
+}
diff --git a/src/Plugin/GraphQL/DataProducer/User/PasswordReset.php b/src/Plugin/GraphQL/DataProducer/User/PasswordReset.php
new file mode 100644
index 000000000..06d105c47
--- /dev/null
+++ b/src/Plugin/GraphQL/DataProducer/User/PasswordReset.php
@@ -0,0 +1,145 @@
+<?php
+
+namespace Drupal\graphql\Plugin\GraphQL\DataProducer\User;
+
+use Drupal\Core\Logger\LoggerChannelInterface;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\graphql\GraphQL\Response\Response;
+use Drupal\graphql\GraphQL\Response\ResponseInterface;
+use Drupal\graphql\Plugin\GraphQL\DataProducer\DataProducerPluginBase;
+use Drupal\user\Controller\UserAuthenticationController;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Resets the user's password (mutation).
+ *
+ * @DataProducer(
+ *   id = "password_reset",
+ *   name = @Translation("Password reset"),
+ *   description = @Translation("Allows to reset the password."),
+ *   consumes = {
+ *     "email" = @ContextDefinition("email",
+ *       label = @Translation("Email")
+ *     )
+ *   }
+ * )
+ */
+class PasswordReset extends DataProducerPluginBase implements ContainerFactoryPluginInterface {
+
+  use StringTranslationTrait;
+
+  /**
+   * The current request.
+   *
+   * @var \Symfony\Component\HttpFoundation\Request
+   */
+  protected $currentRequest;
+
+  /**
+   * The logger service.
+   *
+   * @var \Drupal\Core\Logger\LoggerChannelInterface
+   */
+  protected $logger;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    /** @var \Symfony\Component\HttpFoundation\RequestStack $request_stack */
+    $request_stack = $container->get('request_stack');
+    /** @var \Drupal\Core\Logger\LoggerChannelInterface $logger */
+    $logger = $container->get('logger.channel.graphql');
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $request_stack->getCurrentRequest(),
+      $logger
+    );
+  }
+
+  /**
+   * UserRegister constructor.
+   *
+   * @param array $configuration
+   *   A configuration array containing information about the plugin instance.
+   * @param string $plugin_id
+   *   The plugin_id for the plugin instance.
+   * @param array $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Symfony\Component\HttpFoundation\Request $current_request
+   *   The current request.
+   * @param \Drupal\Core\Logger\LoggerChannelInterface $logger
+   *   The logger service.
+   */
+  public function __construct(
+    array $configuration,
+    string $plugin_id,
+    array $plugin_definition,
+    Request $current_request,
+    LoggerChannelInterface $logger
+  ) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+    $this->currentRequest = $current_request;
+    $this->logger = $logger;
+  }
+
+  /**
+   * Creates an user.
+   *
+   * @param string $email
+   *   The email address to reset the password for.
+   *
+   * @return \Drupal\graphql\GraphQL\Response\ResponseInterface
+   *   Response for password reset mutation with violations in case of failure.
+   */
+  public function resolve(string $email): ResponseInterface {
+    $content = [
+      'mail' => $email,
+    ];
+
+    // Drupal does not have a user authentication service so we need to use the
+    // authentication controller instead.
+    $controller = UserAuthenticationController::create(\Drupal::getContainer());
+    // Build up an authentication request for controller out of current request
+    // but replace the request body with proper content. This way most of the
+    // data are reused including the client's IP which is needed for flood
+    // control. The request body is the only thing (besides client's IP) which
+    // is pulled from the request within controller.
+    $auth_request = new Request(
+      $this->currentRequest->query->all(),
+      $this->currentRequest->request->all(),
+      $this->currentRequest->attributes->all(),
+      $this->currentRequest->cookies->all(),
+      $this->currentRequest->files->all(),
+      $this->currentRequest->server->all(),
+      json_encode($content)
+    );
+    $auth_request->setRequestFormat('json');
+
+    $response = new Response();
+    try {
+      $controller_response = $controller->resetPassword($auth_request);
+    }
+    catch (\Exception $e) {
+      // Show general error message so potential attacker cannot abuse endpoint
+      // to eg check if some email exist or not. Log to watchdog for potential
+      // further investigation.
+      $this->logger->warning($e->getMessage());
+      $response->addViolation($this->t('Unable to reset password, please try again later.'));
+      return $response;
+    }
+    // Show general error message also in case of unexpected response. Log to
+    // watchdog for potential further investigation.
+    if ($controller_response->getStatusCode() !== 200) {
+      $this->logger->warning("Unexpected response code @code during password reset.", ['@code' => $response->getStatusCode()]);
+      $response->addViolation($this->t('Unable to reset password, please try again later.'));
+    }
+
+    return $response;
+  }
+
+}