From: Tim Kientzle <kientzle@gmail.com>
Date: Thu, 13 Nov 2008 12:43:54 +0000 (-0500)
Subject: <sigh> Weaken the already-weak LZMA format check.
X-Git-Tag: v2.6.0~39
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=03a76ae4aab20ec454ca1b931411f051d2900bd5;p=thirdparty%2Flibarchive.git

<sigh> Weaken the already-weak LZMA format check.

SVN-Revision: 254
---

diff --git a/libarchive/archive_read_support_compression_lzma.c b/libarchive/archive_read_support_compression_lzma.c
index e90c0d64a..2fd8572f1 100644
--- a/libarchive/archive_read_support_compression_lzma.c
+++ b/libarchive/archive_read_support_compression_lzma.c
@@ -147,11 +147,15 @@ lzma_reader_bid(struct archive_reader *self, const void *buff, size_t len)
 	bits_checked += 8;
 
 	/* ??? TODO:  Explain this.  ??? */
+	/* NSIS format check uses this, but I've seen tar.lzma
+	 * archives where this byte is 0xff, not 0. */
+#if 0
 	if (len < 6)
 		return (bits_checked);
 	if (buffer[5] != 0)
 		return (0);
 	bits_checked += 8;
+#endif
 
 	/* TODO: The above test is still very weak.  It would be
 	 * good to do better. */