From d2ce83a6f8f5e4623db51f385d0531c2ed83f513 Mon Sep 17 00:00:00 2001
From: Pavel Korotkov <pkorotkov@gmail.com>
Date: Tue, 28 Jul 2020 18:27:43 +0300
Subject: [PATCH] #2 Fix AWS V4 signature regexp

We now respect possible spaces in parts of Authorization header field whoses presence causes problems for some client apps (such as aws cli).

Signed-off-by: Pavel Korotkov <pkorotkov@gmail.com>
---
 auth/center.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/auth/center.go b/auth/center.go
index 73ac0185..5c533254 100644
--- a/auth/center.go
+++ b/auth/center.go
@@ -18,7 +18,7 @@ import (
 	"go.uber.org/zap"
 )
 
-var authorizationFieldRegexp = regexp.MustCompile(`AWS4-HMAC-SHA256 Credential=(?P<access_key_id>[^/]+)/(?P<date>[^/]+)/(?P<region>[^/]*)/(?P<service>[^/]+)/aws4_request, SignedHeaders=(?P<signed_header_fields>.*), Signature=(?P<v4_signature>.*)`)
+var authorizationFieldRegexp = regexp.MustCompile(`AWS4-HMAC-SHA256 Credential=(?P<access_key_id>[^/]+)/(?P<date>[^/]+)/(?P<region>[^/]*)/(?P<service>[^/]+)/aws4_request,\s*SignedHeaders=(?P<signed_header_fields>.+),\s*Signature=(?P<v4_signature>.+)`)
 
 const emptyStringSHA256 = `e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855`