Imported to git.

1 files changed, 191 insertions, 0 deletions

diff --git a/tests/test_stream_flags.c b/tests/test_stream_flags.c
new file mode 100644
index 00000000..4cd22576
--- /dev/null
+++ b/tests/test_stream_flags.c
@@ -0,0 +1,191 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       test_stream_flags.c
+/// \brief      Tests Stream Header and Stream tail coders
+//
+//  Copyright (C) 2007 Lasse Collin
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2.1 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "tests.h"
+
+
+static lzma_stream_flags known_flags;
+static lzma_stream_flags decoded_flags;
+static uint8_t buffer[LZMA_STREAM_HEADER_SIZE + LZMA_STREAM_TAIL_SIZE];
+static lzma_stream strm = LZMA_STREAM_INIT;
+
+
+static bool
+validate(void)
+{
+	if (known_flags.check != decoded_flags.check
+			|| known_flags.has_crc32 != decoded_flags.has_crc32
+			|| known_flags.is_multi != decoded_flags.is_multi)
+		return true;
+
+	return false;
+}
+
+
+static bool
+test_header_decoder(size_t expected_size, lzma_ret expected_ret)
+{
+	memcrap(&decoded_flags, sizeof(decoded_flags));
+
+	if (lzma_stream_header_decoder(&strm, &decoded_flags) != LZMA_OK)
+		return true;
+
+	if (coder_loop(&strm, buffer, expected_size, NULL, 0,
+			expected_ret, LZMA_RUN))
+		return true;
+
+	if (expected_ret != LZMA_STREAM_END)
+		return false;
+
+	return validate();
+}
+
+
+static void
+test_header(void)
+{
+	memcrap(buffer, sizeof(buffer));
+	expect(lzma_stream_header_encode(buffer, &known_flags) == LZMA_OK);
+	succeed(test_header_decoder(LZMA_STREAM_HEADER_SIZE, LZMA_STREAM_END));
+}
+
+
+static bool
+test_tail_decoder(size_t expected_size, lzma_ret expected_ret)
+{
+	memcrap(&decoded_flags, sizeof(decoded_flags));
+
+	if (lzma_stream_tail_decoder(&strm, &decoded_flags) != LZMA_OK)
+		return true;
+
+	if (coder_loop(&strm, buffer, expected_size, NULL, 0,
+			expected_ret, LZMA_RUN))
+		return true;
+
+	if (expected_ret == LZMA_STREAM_END && validate())
+		return true;
+
+	return false;
+}
+
+
+static void
+test_tail(void)
+{
+	memcrap(buffer, sizeof(buffer));
+	expect(lzma_stream_tail_encode(buffer, &known_flags) == LZMA_OK);
+	succeed(test_tail_decoder(LZMA_STREAM_TAIL_SIZE, LZMA_STREAM_END));
+}
+
+
+static void
+test_encode_invalid(void)
+{
+	known_flags.check = LZMA_CHECK_ID_MAX + 1;
+	known_flags.has_crc32 = false;
+	known_flags.is_multi = false;
+
+	expect(lzma_stream_header_encode(buffer, &known_flags)
+			== LZMA_PROG_ERROR);
+
+	expect(lzma_stream_tail_encode(buffer, &known_flags)
+			== LZMA_PROG_ERROR);
+
+	known_flags.check = (lzma_check_type)(-1);
+
+	expect(lzma_stream_header_encode(buffer, &known_flags)
+			== LZMA_PROG_ERROR);
+
+	expect(lzma_stream_tail_encode(buffer, &known_flags)
+			== LZMA_PROG_ERROR);
+}
+
+
+static void
+test_decode_invalid(void)
+{
+	known_flags.check = LZMA_CHECK_NONE;
+	known_flags.has_crc32 = false;
+	known_flags.is_multi = false;
+
+	expect(lzma_stream_header_encode(buffer, &known_flags) == LZMA_OK);
+
+	// Test 1 (invalid Magic Bytes)
+	buffer[5] ^= 1;
+	succeed(test_header_decoder(6, LZMA_DATA_ERROR));
+	buffer[5] ^= 1;
+
+	// Test 2a (valid CRC32)
+	uint32_t crc = lzma_crc32(buffer + 6, 1, 0);
+	for (size_t i = 0; i < 4; ++i)
+		buffer[7 + i] = crc >> (i * 8);
+	succeed(test_header_decoder(LZMA_STREAM_HEADER_SIZE, LZMA_STREAM_END));
+
+	// Test 2b (invalid Stream Flags with valid CRC32)
+	buffer[6] ^= 0x20;
+	crc = lzma_crc32(buffer + 6, 1, 0);
+	for (size_t i = 0; i < 4; ++i)
+		buffer[7 + i] = crc >> (i * 8);
+	succeed(test_header_decoder(7, LZMA_HEADER_ERROR));
+
+	// Test 3 (invalid CRC32)
+	expect(lzma_stream_header_encode(buffer, &known_flags) == LZMA_OK);
+	buffer[LZMA_STREAM_HEADER_SIZE - 1] ^= 1;
+	succeed(test_header_decoder(LZMA_STREAM_HEADER_SIZE, LZMA_DATA_ERROR));
+
+	// Test 4 (invalid Stream Flags)
+	expect(lzma_stream_tail_encode(buffer, &known_flags) == LZMA_OK);
+	buffer[0] ^= 0x40;
+	succeed(test_tail_decoder(1, LZMA_HEADER_ERROR));
+	buffer[0] ^= 0x40;
+
+	// Test 5 (invalid Magic Bytes)
+	buffer[2] ^= 1;
+	succeed(test_tail_decoder(3, LZMA_DATA_ERROR));
+}
+
+
+int
+main()
+{
+	lzma_init();
+
+	// Valid headers
+	for (lzma_check_type check = LZMA_CHECK_NONE;
+			check <= LZMA_CHECK_ID_MAX; ++check) {
+		for (int has_crc32 = 0; has_crc32 <= 1; ++has_crc32) {
+			for (int is_multi = 0; is_multi <= 1; ++is_multi) {
+				known_flags.check = check;
+				known_flags.has_crc32 = has_crc32;
+				known_flags.is_multi = is_multi;
+
+				test_header();
+				test_tail();
+			}
+		}
+	}
+
+	// Invalid headers
+	test_encode_invalid();
+	test_decode_invalid();
+
+	lzma_end(&strm);
+
+	return 0;
+}