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fix: bug in cloudflare response detection

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The cloudflare server header was not recognized in
some cases such as when the server header is "server"
or when the header value is "Cloudflare".
This commit is contained in:
Dag 2022-03-24 01:25:09 +01:00 • committed by Eugene Molotov
parent 7bdc53125c
commit 384790537b
1 changed files with 4 additions and 2 deletions
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6
lib/contents.php
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@ -228,6 +228,8 @@ function getContents($url, $header = array(), $opts = array(), $returnHeader = f
curl_close($ch);
}
$finalHeader = array_change_key_case($finalHeader, CASE_LOWER);
switch($errorCode) {
case 200: // Contents OK
case 201: // Contents Created
@ -236,7 +238,7 @@ function getContents($url, $header = array(), $opts = array(), $returnHeader = f
$data = substr($data, $headerSize);
// Disable caching if the server responds with "Cache-Control: no-cache"
// or "Cache-Control: no-store"
$finalHeader = array_change_key_case($finalHeader, CASE_LOWER);
if(array_key_exists('cache-control', $finalHeader)) {
Debug::log('Server responded with "Cache-Control" header');
$directives = explode(',', $finalHeader['cache-control']);
@ -257,7 +259,7 @@ function getContents($url, $header = array(), $opts = array(), $returnHeader = f
$retVal['content'] = $cache->loadData();
break;
default:
if(array_key_exists('Server', $finalHeader) && strpos($finalHeader['Server'], 'cloudflare') !== false) {
if(array_key_exists('server', $finalHeader) && stripos($finalHeader['server'], 'cloudflare') !== false) {
throw new CloudflareChallengeException($errorCode);
}