filter out empty headers

Fixes issues tpyo#157 & tpyo#171. It turns out that ListBuckets does not work on non-amazon services due to a 403 SignatureDoesNotMatch error caused by the empty headers.
tamasmazuk · May 16, 2021 · f566d66 · f566d66
1 parent 81a35c6
commit f566d66
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/S3.php b/S3.php
@@ -2004,7 +2004,7 @@ public static function __getSignatureV4($amzHeaders, $headers, $method, $uri, $p
 
 		// CanonicalHeaders
 		foreach ($headers as $k => $v)
-			$combinedHeaders[strtolower($k)] = trim($v);
+			if (!empty($v)) $combinedHeaders[strtolower($k)] = trim($v);
 		foreach ($amzHeaders as $k => $v) 
 			$combinedHeaders[strtolower($k)] = trim($v);
 		uksort($combinedHeaders, array('self', '__sortMetaHeadersCmp'));