There's a chance we can wrongly treat compressed file as a plain tar file.
To prevent this, let's check for the compressed signatures first.
---
src/buffer.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/src/buffer.c b/src/buffer.c
index 4b44eaf..723ea71 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -390,14 +390,16 @@ check_compressed_archive (bool *pshort)
/* Restore global values */
read_full_records = sfr;
- if (tar_checksum (record_start, true) == HEADER_SUCCESS)
- /* Probably a valid header */
- return ct_tar;
-
+ /* Check for compressed signatures first, then check a tar checksum.
+ There's a chance of wrongly treat compressed file as a valid .tar file
otherwise */
for (p = magic + 2; p < magic + NMAGIC; p++)
if (memcmp (record_start->buffer, p->magic, p->length) == 0)
return p->type;
+ if (tar_checksum (record_start, true) == HEADER_SUCCESS)
+ /* Probably a valid header */
+ return ct_tar;
+
return ct_none;
}
--
1.8.5.2
