From: Florian Forster <ff@octo.it>
Date: Tue, 16 Jan 2018 19:24:49 +0000 (+0100)
Subject: Package fitbit: Don't URL-decode Fitbit's signature.
X-Git-Url: https://git.octo.it/?p=kraftakt.git;a=commitdiff_plain;h=e99826bfa13306dda3897d3490969032b8aa13f5

Package fitbit: Don't URL-decode Fitbit's signature.

The documentation states that that should be done, but then the signature
may include "+", which URL decode turns into a space …
---

diff --git a/fitbit/fitbit.go b/fitbit/fitbit.go
index f871604..2c0a04a 100644
--- a/fitbit/fitbit.go
+++ b/fitbit/fitbit.go
@@ -9,7 +9,6 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/http"
-	"net/url"
 	"time"
 
 	"github.com/octo/gfitsync/app"
@@ -46,14 +45,9 @@ func ParseToken(ctx context.Context, r *http.Request, u *app.User) error {
 }
 
 func CheckSignature(ctx context.Context, payload []byte, rawSig string) bool {
-	base64Sig, err := url.QueryUnescape(rawSig)
+	signatureGot, err := base64.StdEncoding.DecodeString(rawSig)
 	if err != nil {
-		log.Errorf(ctx, "QueryUnescape(%q) = %v", rawSig, err)
-		return false
-	}
-	signatureGot, err := base64.StdEncoding.DecodeString(base64Sig)
-	if err != nil {
-		log.Errorf(ctx, "base64.StdEncoding.DecodeString(%q) = %v", base64Sig, err)
+		log.Errorf(ctx, "base64.StdEncoding.DecodeString(%q) = %v", rawSig, err)
 		return false
 	}