File bsc1202436-2.patch of Package tar.31894

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File bsc1202436-2.patch of Package tar.31894

From 5e8a915b16c5f06d2a16d98cdc2af666199caabb Mon Sep 17 00:00:00 2001
From: Sergey Poznyakoff <gray@gnu.org>
Date: Sat, 11 Feb 2023 14:21:05 +0200
Subject: Changes in extended header decoder

* src/xheader.c (decode_time): Fix error detection.
(raw_path_decoder): Ignore empty paths.
---
 src/xheader.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/xheader.c b/src/xheader.c
index 7ff216b..a195f3e 100644
--- a/src/xheader.c
+++ b/src/xheader.c
@@ -1059,6 +1059,12 @@ decode_time (struct timespec *ts, char const *arg, char const *keyword)
 		keyword, arg));
       return false;
     }
+  if (*arg_lim)
+    {
+      ERROR ((0, 0, _("Malformed extended header: invalid %s=%s"),
+	      keyword, arg));
+      return false;
+    }
 
   *ts = t;
   return true;
@@ -1247,9 +1253,12 @@ path_coder (struct tar_stat_info const *st, char const *keyword,
 static void
 raw_path_decoder (struct tar_stat_info *st, char const *arg)
 {
-  decode_string (&st->orig_file_name, arg);
-  decode_string (&st->file_name, arg);
-  st->had_trailing_slash = strip_trailing_slashes (st->file_name);
+  if (*arg)
+    {
+      decode_string (&st->orig_file_name, arg);
+      decode_string (&st->file_name, arg);
+      st->had_trailing_slash = strip_trailing_slashes (st->file_name);
+    }
 }
 
 
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