From 6526709d4845864616eeea966a0c168b1d20ad96 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fabian=20Gr=C3=BCnbichler?= <f.gruenbichler@proxmox.com>
Date: Fri, 23 Apr 2021 13:00:47 +0200
Subject: [PATCH] file-restore: add context to b64-decode error
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

to make the following cryptic error:

 proxmox-file-restore failed: Error: Invalid byte 46, offset 5.

more understandable:

 proxmox-file-restore failed: Error: Failed base64-decoding path '/root.pxar.didx' - Invalid byte 46, offset 5.

when a user passes in a non-base64 path but sets `--base64`.

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
---
 src/bin/proxmox-file-restore.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/bin/proxmox-file-restore.rs b/src/bin/proxmox-file-restore.rs
index 3d750152..bb8261bb 100644
--- a/src/bin/proxmox-file-restore.rs
+++ b/src/bin/proxmox-file-restore.rs
@@ -47,7 +47,8 @@ enum ExtractPath {
 
 fn parse_path(path: String, base64: bool) -> Result<ExtractPath, Error> {
     let mut bytes = if base64 {
-        base64::decode(path)?
+        base64::decode(path.clone())
+            .map_err(|err| format_err!("Failed base64-decoding path '{}' - {}", path, err))?
     } else {
         path.into_bytes()
     };