www.aleph1.co.uk Git - yaffs-website/blob - web/modules/contrib/redirect/src/Form/RedirectForm.php

   1 <?php
   2
   3 namespace Drupal\redirect\Form;
   4
   5 use Drupal\Component\Utility\UrlHelper;
   6 use Drupal\Core\Entity\ContentEntityForm;
   7 use Drupal\Core\Language\Language;
   8 use Drupal\Core\Routing\MatchingRouteNotFoundException;
   9 use Drupal\Core\Url;
  10 use Drupal\redirect\Entity\Redirect;
  11 use Drupal\Core\Form\FormStateInterface;
  12
  13 class RedirectForm extends ContentEntityForm {
  14
  15   /**
  16    * {@inheritdoc}
  17    */
  18   protected function prepareEntity() {
  19     /** @var \Drupal\redirect\Entity\Redirect $redirect */
  20     $redirect = $this->entity;
  21
  22     if ($redirect->isNew()) {
  23
  24       // To pass in the query set parameters into GET as follows:
  25       // source_query[key1]=value1&source_query[key2]=value2
  26       $source_query = array();
  27       if ($this->getRequest()->get('source_query')) {
  28         $source_query = $this->getRequest()->get('source_query');
  29       }
  30
  31       $redirect_options = array();
  32       $redirect_query = array();
  33       if ($this->getRequest()->get('redirect_options')) {
  34         $redirect_options = $this->getRequest()->get('redirect_options');
  35         if (isset($redirect_options['query'])) {
  36           $redirect_query = $redirect_options['query'];
  37           unset($redirect_options['query']);
  38         }
  39       }
  40
  41       $source_url = urldecode($this->getRequest()->get('source'));
  42       if (!empty($source_url)) {
  43         $redirect->setSource($source_url, $source_query);
  44       }
  45
  46       $redirect_url = urldecode($this->getRequest()->get('redirect'));
  47       if (!empty($redirect_url)) {
  48         try {
  49           $redirect->setRedirect($redirect_url, $redirect_query, $redirect_options);
  50         }
  51         catch (MatchingRouteNotFoundException $e) {
  52           drupal_set_message(t('Invalid redirect URL %url provided.', array('%url' => $redirect_url)), 'warning');
  53         }
  54       }
  55
  56       $redirect->setLanguage($this->getRequest()->get('language') ? $this->getRequest()->get('language') : Language::LANGCODE_NOT_SPECIFIED);
  57     }
  58   }
  59
  60   /**
  61    * {@inheritdoc}
  62    */
  63   public function form(array $form, FormStateInterface $form_state) {
  64     $form = parent::form($form, $form_state);
  65     /** @var \Drupal\redirect\Entity\Redirect $redirect */
  66     $redirect = $this->entity;
  67
  68     $default_code = $redirect->getStatusCode() ? $redirect->getStatusCode() : \Drupal::config('redirect.settings')->get('default_status_code');
  69
  70     $form['status_code'] = array(
  71       '#type' => 'select',
  72       '#title' => t('Redirect status'),
  73       '#description' => t('You can find more information about HTTP redirect status codes at <a href="@status-codes">@status-codes</a>.', array('@status-codes' => 'http://en.wikipedia.org/wiki/List_of_HTTP_status_codes#3xx_Redirection')),
  74       '#default_value' => $default_code,
  75       '#options' => redirect_status_code_options(),
  76     );
  77
  78     return $form;
  79   }
  80
  81   /**
  82    * {@inheritdoc}
  83    */
  84   public function validateForm(array &$form, FormStateInterface $form_state) {
  85     parent::validateForm($form, $form_state);
  86     $source = $form_state->getValue(array('redirect_source', 0));
  87     $redirect = $form_state->getValue(array('redirect_redirect', 0));
  88
  89     if ($source['path'] == '<front>') {
  90       $form_state->setErrorByName('redirect_source', t('It is not allowed to create a redirect from the front page.'));
  91     }
  92     if (strpos($source['path'], '#') !== FALSE) {
  93       $form_state->setErrorByName('redirect_source', t('The anchor fragments are not allowed.'));
  94     }
  95     if (strpos($source['path'], '/') === 0) {
  96       $form_state->setErrorByName('redirect_source', t('The url to redirect from should not start with a forward slash (/).'));
  97     }
  98
  99     try {
 100       $source_url = Url::fromUri('internal:/' . $source['path']);
 101       $redirect_url = Url::fromUri($redirect['uri']);
 102
 103       // It is relevant to do this comparison only in case the source path has
 104       // a valid route. Otherwise the validation will fail on the redirect path
 105       // being an invalid route.
 106       if ($source_url->toString() == $redirect_url->toString()) {
 107         $form_state->setErrorByName('redirect_redirect', t('You are attempting to redirect the page to itself. This will result in an infinite loop.'));
 108       }
 109     }
 110     catch (\InvalidArgumentException $e) {
 111       // Do nothing, we want to only compare the resulting URLs.
 112     }
 113
 114     $parsed_url = UrlHelper::parse(trim($source['path']));
 115     $path = isset($parsed_url['path']) ? $parsed_url['path'] : NULL;
 116     $query = isset($parsed_url['query']) ? $parsed_url['query'] : NULL;
 117     $hash = Redirect::generateHash($path, $query, $form_state->getValue('language')[0]['value']);
 118
 119     // Search for duplicate.
 120     $redirects = \Drupal::entityManager()
 121       ->getStorage('redirect')
 122       ->loadByProperties(array('hash' => $hash));
 123
 124     if (!empty($redirects)) {
 125       $redirect = array_shift($redirects);
 126       if ($this->entity->isNew() || $redirect->id() != $this->entity->id()) {
 127         $form_state->setErrorByName('redirect_source', t('The source path %source is already being redirected. Do you want to <a href="@edit-page">edit the existing redirect</a>?',
 128           array(
 129             '%source' => $source['path'],
 130             '@edit-page' => $redirect->url('edit-form'))));
 131       }
 132     }
 133   }
 134
 135   /**
 136    * {@inheritdoc}
 137    */
 138   public function save(array $form, FormStateInterface $form_state) {
 139     $this->entity->save();
 140     drupal_set_message(t('The redirect has been saved.'));
 141     $form_state->setRedirect('redirect.list');
 142   }
 143 }