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Nothing we can do about IE 6, but this should reduce the bandwidth need significantly.

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git-svn-id: file:///svn/phpbb/trunk@8238 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
Henry Sudhof
2007-11-16 14:21:05 +00:00
parent bec8f7b22c
commit 053730e477
2 changed files with 27 additions and 9 deletions
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34
phpBB/download/file.php
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@@ -32,6 +32,9 @@ if (isset($_GET['avatar']))
exit;
}
unset($dbpasswd);
// worst-case default
$browser = (!empty($_SERVER['HTTP_USER_AGENT'])) ? htmlspecialchars((string) $_SERVER['HTTP_USER_AGENT']) : 'msie 6.0';
$config = $cache->obtain_config();
$filename = $_GET['avatar'];
@@ -53,9 +56,25 @@ if (isset($_GET['avatar']))
$db->sql_close();
exit;
}
$ext = substr(strrchr($filename, '.'), 1);
$filename = intval($filename);
$stamp = (int) substr(stristr($filename, '_'), 1);
$filename = (int) $filename;
// let's see if we have to send the file at all
$last_load = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? strtotime(trim($_SERVER['HTTP_IF_MODIFIED_SINCE'])) : false;
if (strpos(strtolower($browser), 'msie 6.0') === false)
{
if ($last_load !== false && $last_load <= $stamp)
{
header('Not Modified', true, 304);
exit();
}
else
{
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $stamp) . ' GMT');
}
}
if (!in_array($ext, array('png', 'gif', 'jpg', 'jpeg')))
{
@@ -68,7 +87,7 @@ if (isset($_GET['avatar']))
$db->sql_close();
exit;
}
if (!$filename)
{
// no way such an avatar could exist. They are not following the rules, stop the show.
@@ -81,7 +100,7 @@ if (isset($_GET['avatar']))
exit;
}
send_avatar_to_browser(($avatar_group ? 'g' : '') . $filename . '.' . $ext);
send_avatar_to_browser(($avatar_group ? 'g' : '') . $filename . '.' . $ext, $browser);
if (!empty($cache))
{
@@ -267,16 +286,13 @@ else
* A simplified function to deliver avatars
* The argument needs to be checked before calling this function.
*/
function send_avatar_to_browser($file)
function send_avatar_to_browser($file, $browser)
{
global $config, $phpbb_root_path;
$prefix = $config['avatar_salt'] . '_';
$image_dir = $config['avatar_path'];
// worst-case default
$browser = (!empty($_SERVER['HTTP_USER_AGENT'])) ? htmlspecialchars((string) $_SERVER['HTTP_USER_AGENT']) : 'msie 6.0';
// Adjust image_dir path (no trailing slash)
if (substr($image_dir, -1, 1) == '/' || substr($image_dir, -1, 1) == '\\')
{
@@ -290,7 +306,7 @@ function send_avatar_to_browser($file)
}
$file_path = $phpbb_root_path . $image_dir . '/' . $prefix . $file;
if ((@file_exists($file_path) && @is_readable($file_path)) || headers_sent())
if ((@file_exists($file_path) && @is_readable($file_path)) && !headers_sent())
{
header('Pragma: public');