[#182] Fix parsing signed headers in presigned urls

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>

CHANGELOG.md

@@ -12,6 +12,7 @@ This document outlines major changes between releases.
 - Return appropriate 404 code when object missed in storage but there is in gate cache (#158)
 - Replace part on re-upload when use multipart upload (#176)
 - Fix goroutine leak on put object error (#178)
+- Fix parsing signed headers in presigned urls (#182)
 
 ### Added
 - Support dump metrics descriptions (#80)

api/auth/center.go

@@ -153,7 +153,7 @@ func (c *center) Authenticate(r *http.Request) (*Box, error) {
 			Service:      creds[3],
 			Region:       creds[2],
 			SignatureV4:  queryValues.Get(AmzSignature),
-			SignedFields: queryValues[AmzSignedHeaders],
+			SignedFields: strings.Split(queryValues.Get(AmzSignedHeaders), ";"),
 			Date:         creds[1],
 			IsPresigned:  true,
 		}

api/auth/presign.go

@@ -34,6 +34,7 @@ func PresignRequest(creds *credentials.Credentials, reqData RequestData, presign
 	}
 
 	req.Header.Set(AmzDate, presignData.SignTime.Format("20060102T150405Z"))
+	req.Header.Set(ContentTypeHdr, "text/plain")
 
 	signer := v4.NewSigner(creds)
 	signer.DisableURIPathEscaping = true