[src/trunk]: src/tests/bin/tar Add base-256 test (Micha Gorny)

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9cd4faab0e67
branches:  trunk
changeset: 446303:9cd4faab0e67
user:      christos <christos%NetBSD.org@localhost>
date:      Fri Nov 30 00:53:41 2018 +0000

description:
Add base-256 test (Micha Gorny)

diffstat:

 tests/bin/tar/t_tar.sh |  48 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 47 insertions(+), 1 deletions(-)

diffs (63 lines):

diff -r 91ff6a895d11 -r 9cd4faab0e67 tests/bin/tar/t_tar.sh
--- a/tests/bin/tar/t_tar.sh    Fri Nov 30 00:53:11 2018 +0000
+++ b/tests/bin/tar/t_tar.sh    Fri Nov 30 00:53:41 2018 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: t_tar.sh,v 1.1 2012/03/17 16:33:11 jruoho Exp $
+# $NetBSD: t_tar.sh,v 1.2 2018/11/30 00:53:41 christos Exp $
 #
 # Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -45,7 +45,53 @@
        atf_check -s eq:0 -o empty -e empty cmp file1.tar file2.tar
 }
 
+atf_test_case rd_base256_size
+rd_base256_size_head() {
+       atf_set "descr" "Test extracting an archive whose member size" \
+                       "is encoded as base-256 number (GNU style)"
+}
+rd_base256_size_body() {
+       # prepare random file data for comparison
+       # take 0x1200CF bytes in order to test that we:
+       # - handle multiple bytes of size field correctly
+       # - do not fail on NUL bytes
+       # - do not fail on char values > 0x80 (with signed char)
+       dd if=/dev/urandom of=reference.bin bs=1179855 count=1
+       # write test archive header
+       # - filename
+       printf 'output.bin' > test.tar
+       # - pad to 100 octets
+       head -c 90 /dev/zero >> test.tar
+       # - mode, uid, gid
+       printf '%07d\0%07d\0%07d\0' 644 177776 177775 >> test.tar
+       # - size (base-256)
+       printf '\x80\0\0\0\0\0\0\0\0\x12\x00\xCF' >> test.tar
+       # - timestamp, checksum
+       printf '%011d\0%06d\0 0' 13377546642 12460 >> test.tar
+       # - pad empty linkname (100 octets)
+       head -c 100 /dev/zero >> test.tar
+       # - magic, user name
+       printf 'ustar  \0nobody' >> test.tar
+       # - pad user name field to 32 bytes
+       head -c 26 /dev/zero >> test.tar
+       # - group name
+       printf 'nogroup' >> test.tar
+       # - pad to full block
+       head -c 208 /dev/zero >> test.tar
+       # append file data to the test archive
+       cat reference.bin >> test.tar
+       # pad to full block + append two terminating null blocks
+       head -c 1450 /dev/zero >> test.tar
+
+       # test extracting the test archive
+       atf_check -s eq:0 -o empty -e empty tar -xf test.tar
+
+       # ensure that output.bin is equal to reference.bin
+       atf_check -s eq:0 -o empty -e empty cmp output.bin reference.bin
+}
+
 atf_init_test_cases()
 {
        atf_add_test_case append
+       atf_add_test_case rd_base256_size
 }