1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
<?php
/**
* Implements hook_menu().
*/
function aggregator_test_menu() {
$items['aggregator/test-feed'] = array(
'title' => 'Test feed static last modified date',
'description' => "A cached test feed with a static last modified date.",
'page callback' => 'aggregator_test_feed',
'access arguments' => array('access content'),
'type' => MENU_CALLBACK,
);
return $items;
}
/**
* Page callback. Generates a test feed and simulates last-modified and etags.
*
* @param $use_last_modified
* Set TRUE to send a last modified header.
* @param $use_etag
* Set TRUE to send an etag.
*/
function aggregator_test_feed($use_last_modified = FALSE, $use_etag = FALSE) {
$last_modified = strtotime('Sun, 19 Nov 1978 05:00:00 GMT');
$etag = drupal_hash_base64($last_modified);
$if_modified_since = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) : FALSE;
$if_none_match = isset($_SERVER['HTTP_IF_NONE_MATCH']) ? stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) : FALSE;
// Send appropriate response. We respond with a 304 not modified on either
// etag or on last modified.
if ($use_last_modified) {
drupal_add_http_header('Last-Modified', gmdate(DATE_RFC1123, $last_modified));
}
if ($use_etag) {
drupal_add_http_header('ETag', $etag);
}
// Return 304 not modified if either last modified or etag match.
if ($last_modified == $if_modified_since || $etag == $if_none_match) {
drupal_add_http_header('Status', '304 Not Modified');
return;
}
// The following headers force validation of cache:
drupal_add_http_header('Expires', 'Sun, 19 Nov 1978 05:00:00 GMT');
drupal_add_http_header('Cache-Control', 'must-revalidate');
drupal_add_http_header('Content-Type', 'application/rss+xml; charset=utf-8');
// Read actual feed from file.
$file_name = DRUPAL_ROOT . '/' . drupal_get_path('module', 'aggregator') . '/tests/aggregator_test_rss091.xml';
$handle = fopen($file_name, 'r');
$feed = fread($handle, filesize($file_name));
fclose($handle);
print $feed;
}
|
