diff options
Diffstat (limited to 'mod/groups/icon.php')
| -rw-r--r-- | mod/groups/icon.php | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/mod/groups/icon.php b/mod/groups/icon.php index f4c0f8010..ebdc1eb6d 100644 --- a/mod/groups/icon.php +++ b/mod/groups/icon.php @@ -8,10 +8,23 @@ require_once(dirname(dirname(dirname(__FILE__))) . "/engine/start.php"); $group_guid = get_input('group_guid'); + +/* @var ElggGroup $group */ $group = get_entity($group_guid); +if (!($group instanceof ElggGroup)) { + header("HTTP/1.1 404 Not Found"); + exit; +} + +// If is the same ETag, content didn't changed. +$etag = $group->icontime . $group_guid; +if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && trim($_SERVER['HTTP_IF_NONE_MATCH']) == "\"$etag\"") { + header("HTTP/1.1 304 Not Modified"); + exit; +} $size = strtolower(get_input('size')); -if (!in_array($size,array('large','medium','small','tiny','master','topbar'))) +if (!in_array($size, array('large', 'medium', 'small', 'tiny', 'master', 'topbar'))) $size = "medium"; $success = false; @@ -28,13 +41,14 @@ if ($filehandler->open("read")) { } if (!$success) { - $location = elgg_get_plugins_path() . "groups/graphics/default{$size}.jpg"; + $location = elgg_get_plugins_path() . "groups/graphics/default{$size}.gif"; $contents = @file_get_contents($location); } header("Content-type: image/jpeg"); -header('Expires: ' . date('r',time() + 864000)); +header('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', strtotime("+10 days")), true); header("Pragma: public"); header("Cache-Control: public"); header("Content-Length: " . strlen($contents)); +header("ETag: \"$etag\""); echo $contents; |