From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Sun, 3 Jan 2010 22:41:11 +0000 (+0100)
Subject: tar: fix problem handling tarballs with chksums prepended by spaces
X-Git-Tag: 1_16_0~110
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=d6459685c1a93785d0bdf94e16834a6d4c54842f;p=oweals%2Fbusybox.git

tar: fix problem handling tarballs with chksums prepended by spaces

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---

diff --git a/archival/libunarchive/get_header_tar.c b/archival/libunarchive/get_header_tar.c
index b8d7648ec..1f799277b 100644
--- a/archival/libunarchive/get_header_tar.c
+++ b/archival/libunarchive/get_header_tar.c
@@ -274,7 +274,8 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle)
 			bb_error_msg_and_die("invalid tar header checksum");
 		}
 	}
-	sum = xstrtoul(tar.chksum, 8);
+	/* don't use xstrtoul, tar.chksum may have leading spaces */
+	sum = strtoul(tar.chksum, NULL, 8);
 	if (sum_u != sum IF_FEATURE_TAR_OLDSUN_COMPATIBILITY(&& sum_s != sum)) {
 		bb_error_msg_and_die("invalid tar header checksum");
 	}