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fix range requests for partial content in Utils::downloads() - Fixes #3990

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Signed-off-by: Andy Miller <rhuk@mac.com>
This commit is contained in:
Andy Miller
2025-11-23 17:55:28 +00:00
parent 1bc6e5e13a
commit 5f087d3a43
1 changed files with 13 additions and 11 deletions
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24
system/src/Grav/Common/Utils.php
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@@ -691,6 +691,17 @@ abstract class Utils
header('Content-Disposition: attachment; filename="' . ($options['download_name'] ?? $file_parts['basename']) . '"');
}
if ($grav['config']->get('system.cache.enabled')) {
$expires = $options['expires'] ?? $grav['config']->get('system.pages.expires');
if ($expires > 0) {
$expires_date = gmdate('D, d M Y H:i:s T', time() + $expires);
header('Cache-Control: max-age=' . $expires);
header('Expires: ' . $expires_date);
header('Pragma: cache');
}
header('Last-Modified: ' . gmdate('D, d M Y H:i:s T', filemtime($file)));
}
// multipart-download and download resuming support
if (isset($_SERVER['HTTP_RANGE'])) {
[$a, $range] = explode('=', (string) $_SERVER['HTTP_RANGE'], 2);
@@ -703,7 +714,7 @@ abstract class Utils
$range_end = (int)$range_end;
}
$new_length = $range_end - $range + 1;
header('HTTP/1.1 206 Partial Content');
http_response_code(206);
header("Content-Length: {$new_length}");
header("Content-Range: bytes {$range}-{$range_end}/{$size}");
} else {
@@ -712,19 +723,10 @@ abstract class Utils
header('Content-Length: ' . $size);
if ($grav['config']->get('system.cache.enabled')) {
$expires = $options['expires'] ?? $grav['config']->get('system.pages.expires');
if ($expires > 0) {
$expires_date = gmdate('D, d M Y H:i:s T', time() + $expires);
header('Cache-Control: max-age=' . $expires);
header('Expires: ' . $expires_date);
header('Pragma: cache');
}
header('Last-Modified: ' . gmdate('D, d M Y H:i:s T', filemtime($file)));
// Return 304 Not Modified if the file is already cached in the browser
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) &&
strtotime((string) $_SERVER['HTTP_IF_MODIFIED_SINCE']) >= filemtime($file)) {
header('HTTP/1.1 304 Not Modified');
http_response_code(304);
exit();
}
}