From: Sergey Poznyakoff <gray@gnu.org.ua>
Date: Fri, 24 Aug 2007 12:07:32 +0000 (+0000)
Subject: (check_compressed_archive): Detect files smaller than 512 bytes.
X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Ftar;a=commitdiff_plain;h=7c0b81cbb9790ab9402e983a4d677a8ebde010d5

(check_compressed_archive): Detect files smaller than 512 bytes.
---

diff --git a/src/buffer.c b/src/buffer.c
index 13e1c13..cea5f25 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -235,14 +235,16 @@ check_compressed_archive ()
 {
   struct zip_magic const *p;
   bool sfr;
-
+  bool short_file = false;
+  
   /* Prepare global data needed for find_next_block: */
   record_end = record_start; /* set up for 1st record = # 0 */
   sfr = read_full_records;
   read_full_records = true; /* Suppress fatal error on reading a partial
 			       record */
-  find_next_block ();
-
+  if (find_next_block () == 0)
+    short_file = true;
+  
   /* Restore global values */
   read_full_records = sfr;
 
@@ -254,6 +256,9 @@ check_compressed_archive ()
     if (memcmp (record_start->buffer, p->magic, p->length) == 0)
       return p->type;
 
+  if (short_file)
+    ERROR ((0, 0, _("This does not look like a tar archive")));
+
   return ct_none;
 }