From 17c1ed11117d5a7dc9ddb1936264478d9d9dcbbb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Mart=C3=AD?= <mvdan@mvdan.cc>
Date: Sun, 14 Feb 2016 23:30:39 +0000
Subject: [PATCH] cmd/fdroidcl: treat HTTP error codes

Fixes #3.
---
 cmd/fdroidcl/update.go | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/cmd/fdroidcl/update.go b/cmd/fdroidcl/update.go
index d91d0d7..b46993d 100644
--- a/cmd/fdroidcl/update.go
+++ b/cmd/fdroidcl/update.go
@@ -6,7 +6,6 @@ package main
 import (
 	"bytes"
 	"crypto/sha256"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -93,6 +92,10 @@ func downloadEtag(url, path string, sum []byte) error {
 		return err
 	}
 	defer resp.Body.Close()
+	if resp.StatusCode >= 400 {
+		return fmt.Errorf("download failed: %d %s",
+			resp.StatusCode, http.StatusText(resp.StatusCode))
+	}
 	if resp.StatusCode == http.StatusNotModified {
 		fmt.Printf("not modified")
 		return nil
@@ -114,7 +117,7 @@ func downloadEtag(url, path string, sum []byte) error {
 		}
 		got := sha256.Sum256(data)
 		if !bytes.Equal(sum, got[:]) {
-			return errors.New("sha256 mismatch")
+			return fmt.Errorf("sha256 mismatch")
 		}
 		if _, err := f.Write(data); err != nil {
 			return err