1 <?php

     2 

     3 /**

     4  * @file

     5  * Fetcher functions for the aggregator module.

     6  */

     7 

     8 /**

     9  * Implements hook_aggregator_fetch_info().

    10  */

    11 function aggregator_aggregator_fetch_info() {

    12   return array(

    13     'title' => t('Default fetcher'),

    14     'description' => t('Downloads data from a URL using Drupal\'s HTTP request handler.'),

    15   );

    16 }

    17 

    18 /**

    19  * Implements hook_aggregator_fetch().

    20  */

    21 function aggregator_aggregator_fetch($feed) {

    22   $feed->source_string = FALSE;

    23 

    24   // Generate conditional GET headers.

    25   $headers = array();

    26   if ($feed->etag) {

    27     $headers['If-None-Match'] = $feed->etag;

    28   }

    29   if ($feed->modified) {

    30     $headers['If-Modified-Since'] = gmdate(DATE_RFC7231, $feed->modified);

    31   }

    32 

    33   // Request feed.

    34   $result = drupal_http_request($feed->url, array('headers' => $headers));

    35 

    36   // Process HTTP response code.

    37   switch ($result->code) {

    38     case 304:

    39       break;

    40     case 301:

    41       $feed->url = $result->redirect_url;

    42       // Do not break here.

    43     case 200:

    44     case 302:

    45     case 307:

    46       if (!isset($result->data)) {

    47         $result->data = '';

    48       }

    49       if (!isset($result->headers)) {

    50         $result->headers = array();

    51       }

    52       $feed->source_string = $result->data;

    53       $feed->http_headers = $result->headers;

    54       break;

    55     default:

    56       watchdog('aggregator', 'The feed from %site seems to be broken, due to "%error".', array('%site' => $feed->title, '%error' => $result->code . ' ' . $result->error), WATCHDOG_WARNING);

    57       drupal_set_message(t('The feed from %site seems to be broken, because of error "%error".', array('%site' => $feed->title, '%error' => $result->code . ' ' . $result->error)));

    58   }

    59 

    60   return $feed->source_string === FALSE ? FALSE : TRUE;

    61 }