diff options
| -rw-r--r-- | Tests/LibCompress/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | Tests/LibCompress/TestXz.cpp | 1682 |
2 files changed, 1683 insertions, 0 deletions
diff --git a/Tests/LibCompress/CMakeLists.txt b/Tests/LibCompress/CMakeLists.txt index e61ff6e65e..691b5553a6 100644 --- a/Tests/LibCompress/CMakeLists.txt +++ b/Tests/LibCompress/CMakeLists.txt @@ -3,6 +3,7 @@ set(TEST_SOURCES TestDeflate.cpp TestGzip.cpp TestLzma.cpp + TestXz.cpp TestZlib.cpp ) diff --git a/Tests/LibCompress/TestXz.cpp b/Tests/LibCompress/TestXz.cpp new file mode 100644 index 0000000000..8bb6af4f01 --- /dev/null +++ b/Tests/LibCompress/TestXz.cpp @@ -0,0 +1,1682 @@ +/* + * Copyright (c) 2023, Tim Schumacher <timschumi@gmx.de> + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#include <LibTest/TestCase.h> + +#include <AK/MemoryStream.h> +#include <LibCompress/Xz.h> + +// The following tests are based on test files from the XZ utils package, which have been placed in the public domain: +// https://tukaani.org/xz/xz-5.4.1.tar.xz (subdirectory /xz-5.4.1/tests/files) +// Test descriptions have been taken from the README file in the test files directory. + +TEST_CASE(xz_utils_bad_0_backward_size) +{ + // "bad-0-backward_size.xz has wrong Backward Size in Stream Footer." + Array<u8, 32> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x35, 0x91, 0xC5, 0xC6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_0cat_alone) +{ + // "bad-0cat-alone.xz is good-0-empty.xz concatenated with an empty LZMA_Alone file." + Array<u8, 55> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A, + 0x5D, 0x00, 0x00, 0x01, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x83, 0xFF, + 0xFB, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00 + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: We currently don't support XZ files with multiple concatenated streams, so we don't check for trailing garbage either. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_0cat_header_magic) +{ + // "bad-0cat-header_magic.xz is good-0cat-empty.xz but with one byte + // wrong in the Header Magic Bytes field of the second Stream." + Array<u8, 64> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A, + 0xFD, 0x37, 0x7A, 0x58, 0x59, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: We currently don't support XZ files with multiple concatenated streams, so we don't check for the second header magic. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_0catpad_empty) +{ + // "bad-0catpad-empty.xz has two zero-Block Streams concatenated with + // five-byte Stream Padding between the Streams." + Array<u8, 69> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A, + 0x00, 0x00, 0x00, 0x00, 0x00, 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, + 0x36, 0x00, 0x00, 0x00, 0x00, 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, + 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: We currently don't support XZ files with multiple concatenated streams, so we don't check for the stream padding. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_0_empty_truncated) +{ + // "bad-0-empty-truncated.xz is good-0-empty.xz without the last byte + // of the file." + Array<u8, 31> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59 + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_0_footer_magic) +{ + // "bad-0-footer_magic.xz is good-0-empty.xz but with one byte wrong + // in the Footer Magic Bytes field." + Array<u8, 32> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x58 + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_0_header_magic) +{ + // "bad-0-header_magic.xz is good-0-empty.xz but with one byte wrong + // in the Header Magic Bytes field." + Array<u8, 32> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x59, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor_or_error = Compress::XzDecompressor::create(move(stream)); + EXPECT(decompressor_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_0_nonempty_index) +{ + // "bad-0-nonempty_index.xz has no Blocks but Index claims that there is + // one Block." + Array<u8, 32> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x01, 0x00, 0x00, + 0x2B, 0xB5, 0x86, 0x20, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: The index is currently not checked against the actual blocks. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_0pad_empty) +{ + // "bad-0pad-empty.xz has one Stream with no Blocks followed by + // five-byte Stream Padding. Stream Padding must be a multiple of four + // bytes, thus this file is corrupt." + Array<u8, 37> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A, + 0x00, 0x00, 0x00, 0x00, 0x00 + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: We currently don't support XZ files with multiple concatenated streams, so we don't check for the stream padding. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_1_block_header_1) +{ + // "bad-1-block_header-1.xz has Block Header that ends in the middle of + // the Filter Flags field." + Array<u8, 64> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x01, 0x00, 0x21, 0x01, + 0x0C, 0x9D, 0x60, 0x62, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x0A, 0x02, 0x00, 0x06, + 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, 0x00, 0x01, 0x24, 0x0D, + 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_block_header_2) +{ + // "bad-1-block_header-2.xz has Block Header that has Compressed Size and + // Uncompressed Size but no List of Filter Flags field." + Array<u8, 64> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x01, 0xC0, 0x04, 0x0D, + 0x80, 0x97, 0x8A, 0x12, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x0A, 0x02, 0x00, 0x06, + 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, 0x00, 0x01, 0x24, 0x0D, + 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_block_header_3) +{ + // "bad-1-block_header-3.xz has wrong CRC32 in Block Header." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x33, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_block_header_4) +{ + // "bad-1-block_header-4.xz has too big Compressed Size in Block Header + // (2^63 - 1 bytes while maximum is a little less, because the whole + // Block must stay smaller than 2^63). It's important that the file + // gets rejected due to invalid Compressed Size value; the decoder + // must not try decoding the Compressed Data field." + Array<u8, 76> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x04, 0x40, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x21, 0x01, 0x08, 0x00, 0x00, 0x63, 0xE2, 0x3A, 0x70, + 0x01, 0x00, 0x0C, 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x0A, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, + 0x00, 0x00, 0x00, 0x00, 0x43, 0xA3, 0xA2, 0x15, 0x00, 0x01, 0x29, 0x0D, 0x7D, 0x56, 0x71, 0x1A, + 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: The specification apparently doesn't mention that a block has to be smaller than 2^63, investigate. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_1_block_header_5) +{ + // "bad-1-block_header-5.xz has zero as Compressed Size in Block Header." + Array<u8, 72> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x03, 0xC0, 0x00, 0x0D, + 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0xA9, 0x34, 0x55, 0x23, 0x01, 0x00, 0x0C, 0x48, + 0x65, 0x6C, 0x6C, 0x6F, 0x0A, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, 0x00, 0x00, + 0x43, 0xA3, 0xA2, 0x15, 0x00, 0x01, 0x25, 0x0D, 0x71, 0x19, 0xC4, 0xB6, 0x90, 0x42, 0x99, 0x0D, + 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_block_header_6) +{ + // "bad-1-block_header-6.xz has corrupt Block Header which may crash + // xz -lvv in XZ Utils 5.0.3 and earlier." + Array<u8, 72> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0xC0, 0x11, 0x0D, + 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xDE, 0x39, 0xEB, 0x01, 0x00, 0x0C, 0x48, + 0x65, 0x6C, 0x6C, 0x6F, 0x0A, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, 0x00, 0x00, + 0x43, 0xA3, 0xA2, 0x15, 0x00, 0x01, 0x25, 0x0D, 0x71, 0x19, 0xC4, 0xB6, 0x90, 0x42, 0x99, 0x0D, + 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_check_crc32) +{ + // "bad-1-check-crc32.xz has wrong Check (CRC32)." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x14, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: We currently don't check the uncompressed data against the check value. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_1_check_crc32_2) +{ + // "bad-1-check-crc32-2.xz has Compressed Size and Uncompressed Size in + // Block Header but wrong Check (CRC32) in the actual data." + Array<u8, 72> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x03, 0xC0, 0x11, 0x0D, + 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xDE, 0x39, 0xEB, 0x01, 0x00, 0x0C, 0x48, + 0x65, 0x6C, 0x6C, 0x6F, 0x0A, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, 0x00, 0x00, + 0x43, 0xA3, 0xA2, 0xFF, 0x00, 0x01, 0x25, 0x0D, 0x71, 0x19, 0xC4, 0xB6, 0x90, 0x42, 0x99, 0x0D, + 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: We currently don't check the uncompressed data against the check value. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_1_check_crc64) +{ + // "bad-1-check-crc64.xz has wrong Check (CRC64)." + Array<u8, 72> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x04, 0xE6, 0xD6, 0xB4, 0x46, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0xEF, 0x2E, 0x88, 0x11, + 0x9D, 0x3F, 0x96, 0xCB, 0x00, 0x01, 0x28, 0x0D, 0x3C, 0x67, 0x6A, 0x03, 0x1F, 0xB6, 0xF3, 0x7D, + 0x01, 0x00, 0x00, 0x00, 0x00, 0x04, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: We currently don't check the uncompressed data against the check value. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_1_check_sha256) +{ + // "bad-1-check-sha256.xz has wrong Check (SHA-256)." + Array<u8, 96> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x0A, 0xE1, 0xFB, 0x0C, 0xA1, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x8E, 0x59, 0x35, 0xE7, + 0xE1, 0x33, 0x68, 0xCD, 0x96, 0x88, 0xFE, 0x8F, 0x48, 0xA0, 0x95, 0x52, 0x93, 0x67, 0x6A, 0x02, + 0x15, 0x62, 0x58, 0x2C, 0x7E, 0x84, 0x8D, 0xAF, 0xE1, 0x3F, 0xB0, 0x47, 0x00, 0x01, 0x40, 0x0D, + 0x93, 0x86, 0x4E, 0xAE, 0x18, 0x9B, 0x4B, 0x9A, 0x01, 0x00, 0x00, 0x00, 0x00, 0x0A, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: We currently don't check the uncompressed data against the check value. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_1_lzma2_1) +{ + // "bad-1-lzma2-1.xz has LZMA2 stream whose first chunk (uncompressed) + // doesn't reset the dictionary." + Array<u8, 64> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x00, 0xFF, 0x12, 0xD9, 0x41, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x02, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, 0x01, 0x20, 0x0D, + 0x34, 0xED, 0xB3, 0xCB, 0x06, 0x72, 0x9E, 0x7A, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_lzma2_2) +{ + // "bad-1-lzma2-2.xz has two LZMA2 chunks, of which the second chunk + // indicates dictionary reset, but the LZMA compressed data tries to + // repeat data from the previous chunk." + Array<u8, 424> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0xE0, 0x00, 0xE2, 0x00, 0xB6, 0x5D, 0x00, 0x26, + 0x1B, 0xCA, 0x46, 0x67, 0x5A, 0xF2, 0x77, 0xB8, 0x7D, 0x86, 0xD8, 0x41, 0xDB, 0x05, 0x35, 0xCD, + 0x83, 0xA5, 0x7C, 0x12, 0xA5, 0x05, 0xDB, 0x90, 0xBD, 0x2F, 0x14, 0xD3, 0x71, 0x72, 0x96, 0xA8, + 0x8A, 0x7D, 0x84, 0x56, 0x71, 0x8D, 0x6A, 0x22, 0x98, 0xAB, 0x9E, 0x3D, 0x90, 0x80, 0x2D, 0xC7, + 0x5E, 0x0C, 0x12, 0x52, 0xD3, 0x3F, 0x07, 0x08, 0x7B, 0x1C, 0xA4, 0x77, 0xF3, 0x13, 0xB8, 0x17, + 0xC0, 0xEE, 0x91, 0x81, 0x39, 0xB3, 0x87, 0xF0, 0xFF, 0x00, 0xB3, 0x6A, 0x52, 0x41, 0xED, 0x2E, + 0xB0, 0xF2, 0x64, 0x97, 0xA4, 0x9A, 0x9E, 0x63, 0xA1, 0xAE, 0x19, 0x74, 0x0D, 0xA9, 0xD5, 0x5B, + 0x6C, 0xEE, 0xB1, 0xE0, 0x2C, 0xDC, 0x61, 0xDC, 0xCB, 0x9D, 0x86, 0xCF, 0xE1, 0xDC, 0x0A, 0x7A, + 0x81, 0x14, 0x5F, 0xD0, 0x40, 0xC8, 0x7E, 0x0D, 0x97, 0x44, 0xCE, 0xB5, 0xC2, 0xFC, 0x2C, 0x59, + 0x08, 0xBF, 0x03, 0x80, 0xDC, 0xD7, 0x44, 0x8E, 0xB3, 0xD4, 0x2D, 0xDE, 0xE5, 0x16, 0x21, 0x6E, + 0x47, 0x82, 0xAC, 0x08, 0x59, 0xD8, 0xE4, 0x66, 0x29, 0x61, 0xD5, 0xD1, 0xFA, 0x49, 0x63, 0x90, + 0x11, 0x3E, 0x20, 0xD0, 0xA9, 0xE2, 0xD5, 0x14, 0x81, 0xD9, 0x23, 0xD0, 0x8F, 0x43, 0xAE, 0x45, + 0x55, 0x36, 0x69, 0xAA, 0x00, 0xE0, 0x00, 0xE5, 0x00, 0xAD, 0x0B, 0x00, 0x8C, 0xF1, 0x9D, 0x40, + 0x2B, 0xD0, 0x7D, 0x1D, 0x99, 0xEE, 0xE4, 0xDC, 0x63, 0x74, 0x64, 0x46, 0xA4, 0xA0, 0x4A, 0x64, + 0x65, 0xB2, 0xF6, 0x4E, 0xC1, 0xC8, 0x68, 0x9F, 0x27, 0x54, 0xAD, 0xBB, 0xA6, 0x34, 0x3C, 0x77, + 0xEC, 0x0F, 0x2E, 0x1B, 0x8E, 0x42, 0x27, 0xE5, 0x68, 0xBF, 0x60, 0xF4, 0x0B, 0x3A, 0xF0, 0x9B, + 0x31, 0xEB, 0xDF, 0x3F, 0xD8, 0xAF, 0xA5, 0x55, 0x92, 0x46, 0x05, 0x58, 0x22, 0x09, 0x8F, 0xA8, + 0x60, 0x08, 0x0B, 0xA3, 0xE9, 0x3E, 0xBC, 0xB4, 0x16, 0xDB, 0xC7, 0xA3, 0xA2, 0xC0, 0x16, 0xD5, + 0x14, 0xA7, 0x22, 0xE8, 0x2F, 0xE8, 0xB4, 0xD0, 0x77, 0x17, 0xC5, 0x8B, 0xE4, 0xF2, 0xBB, 0x6B, + 0xD6, 0xEF, 0x9A, 0x81, 0x34, 0x4E, 0x1D, 0xDC, 0xEC, 0x36, 0xE6, 0x44, 0x72, 0xBF, 0x29, 0xB5, + 0x3C, 0x05, 0x31, 0x60, 0x66, 0xBA, 0x2C, 0x03, 0x0F, 0xD6, 0x47, 0xC6, 0x7D, 0x85, 0xD4, 0xC5, + 0x5E, 0x4E, 0x57, 0x73, 0xC3, 0x41, 0x69, 0xBE, 0x0D, 0x8C, 0x9C, 0xB5, 0x15, 0xA9, 0xE7, 0xD2, + 0x78, 0x51, 0x4B, 0xD5, 0x29, 0xD0, 0xF9, 0x35, 0x1A, 0xC5, 0x5D, 0xF4, 0x8C, 0x7A, 0x70, 0xD5, + 0x5E, 0xA8, 0x31, 0x57, 0x80, 0xC8, 0xA5, 0xD8, 0xE0, 0x00, 0x00, 0x00, 0xFB, 0x47, 0x48, 0xDB, + 0x00, 0x01, 0x82, 0x03, 0xC9, 0x03, 0x00, 0x00, 0x0B, 0x04, 0x8E, 0xDE, 0x3E, 0x30, 0x0D, 0x8B, + 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_lzma2_3) +{ + // "bad-1-lzma2-3.xz sets new invalid properties (lc=8, lp=0, pb=0) in + // the middle of Block." + Array<u8, 424> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0xE0, 0x00, 0xE2, 0x00, 0xB6, 0x5D, 0x00, 0x26, + 0x1B, 0xCA, 0x46, 0x67, 0x5A, 0xF2, 0x77, 0xB8, 0x7D, 0x86, 0xD8, 0x41, 0xDB, 0x05, 0x35, 0xCD, + 0x83, 0xA5, 0x7C, 0x12, 0xA5, 0x05, 0xDB, 0x90, 0xBD, 0x2F, 0x14, 0xD3, 0x71, 0x72, 0x96, 0xA8, + 0x8A, 0x7D, 0x84, 0x56, 0x71, 0x8D, 0x6A, 0x22, 0x98, 0xAB, 0x9E, 0x3D, 0x90, 0x80, 0x2D, 0xC7, + 0x5E, 0x0C, 0x12, 0x52, 0xD3, 0x3F, 0x07, 0x08, 0x7B, 0x1C, 0xA4, 0x77, 0xF3, 0x13, 0xB8, 0x17, + 0xC0, 0xEE, 0x91, 0x81, 0x39, 0xB3, 0x87, 0xF0, 0xFF, 0x00, 0xB3, 0x6A, 0x52, 0x41, 0xED, 0x2E, + 0xB0, 0xF2, 0x64, 0x97, 0xA4, 0x9A, 0x9E, 0x63, 0xA1, 0xAE, 0x19, 0x74, 0x0D, 0xA9, 0xD5, 0x5B, + 0x6C, 0xEE, 0xB1, 0xE0, 0x2C, 0xDC, 0x61, 0xDC, 0xCB, 0x9D, 0x86, 0xCF, 0xE1, 0xDC, 0x0A, 0x7A, + 0x81, 0x14, 0x5F, 0xD0, 0x40, 0xC8, 0x7E, 0x0D, 0x97, 0x44, 0xCE, 0xB5, 0xC2, 0xFC, 0x2C, 0x59, + 0x08, 0xBF, 0x03, 0x80, 0xDC, 0xD7, 0x44, 0x8E, 0xB3, 0xD4, 0x2D, 0xDE, 0xE5, 0x16, 0x21, 0x6E, + 0x47, 0x82, 0xAC, 0x08, 0x59, 0xD8, 0xE4, 0x66, 0x29, 0x61, 0xD5, 0xD1, 0xFA, 0x49, 0x63, 0x90, + 0x11, 0x3E, 0x20, 0xD0, 0xA9, 0xE2, 0xD5, 0x14, 0x81, 0xD9, 0x23, 0xD0, 0x8F, 0x43, 0xAE, 0x45, + 0x55, 0x36, 0x69, 0xAA, 0x00, 0xC0, 0x00, 0xE5, 0x00, 0xAD, 0x08, 0x00, 0x8C, 0xF1, 0x9D, 0x40, + 0x2B, 0xD0, 0x7D, 0x1D, 0x99, 0xEE, 0xE4, 0xDC, 0x63, 0x74, 0x64, 0x46, 0xA4, 0xA0, 0x4A, 0x64, + 0x65, 0xB2, 0xF6, 0x4E, 0xC1, 0xC8, 0x68, 0x9F, 0x27, 0x54, 0xAD, 0xBB, 0xA6, 0x34, 0x3C, 0x77, + 0xEC, 0x0F, 0x2E, 0x1B, 0x8E, 0x42, 0x27, 0xE5, 0x68, 0xBF, 0x60, 0xF4, 0x0B, 0x3A, 0xF0, 0x9B, + 0x31, 0xEB, 0xDF, 0x3F, 0xD8, 0xAF, 0xA5, 0x55, 0x92, 0x46, 0x05, 0x58, 0x22, 0x09, 0x8F, 0xA8, + 0x60, 0x08, 0x0B, 0xA3, 0xE9, 0x3E, 0xBC, 0xB4, 0x16, 0xDB, 0xC7, 0xA3, 0xA2, 0xC0, 0x16, 0xD5, + 0x14, 0xA7, 0x22, 0xE8, 0x2F, 0xE8, 0xB4, 0xD0, 0x77, 0x17, 0xC5, 0x8B, 0xE4, 0xF2, 0xBB, 0x6B, + 0xD6, 0xEF, 0x9A, 0x81, 0x34, 0x4E, 0x1D, 0xDC, 0xEC, 0x36, 0xE6, 0x44, 0x72, 0xBF, 0x29, 0xB5, + 0x3C, 0x05, 0x31, 0x60, 0x66, 0xBA, 0x2C, 0x03, 0x0F, 0xD6, 0x47, 0xC6, 0x7D, 0x85, 0xD4, 0xC5, + 0x5E, 0x4E, 0x57, 0x73, 0xC3, 0x41, 0x69, 0xBE, 0x0D, 0x8C, 0x9C, 0xB5, 0x15, 0xA9, 0xE7, 0xD2, + 0x78, 0x51, 0x4B, 0xD5, 0x29, 0xD0, 0xF9, 0x35, 0x1A, 0xC5, 0x5D, 0xF4, 0x8C, 0x7A, 0x70, 0xD5, + 0x5E, 0xA8, 0x31, 0x57, 0x80, 0xC8, 0xA5, 0xD8, 0xE0, 0x00, 0x00, 0x00, 0xFB, 0x47, 0x48, 0xDB, + 0x00, 0x01, 0x82, 0x03, 0xC9, 0x03, 0x00, 0x00, 0x0B, 0x04, 0x8E, 0xDE, 0x3E, 0x30, 0x0D, 0x8B, + 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_lzma2_4) +{ + // "bad-1-lzma2-4.xz has two LZMA2 chunks, of which the first is + // uncompressed and the second is LZMA. The first chunk resets dictionary + // as it should, but the second chunk tries to reset state without + // specifying properties for LZMA." + Array<u8, 408> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x34, 0x4C, 0x6F, 0x72, 0x65, 0x6D, + 0x20, 0x69, 0x70, 0x73, 0x75, 0x6D, 0x20, 0x64, 0x6F, 0x6C, 0x6F, 0x72, 0x20, 0x73, 0x69, 0x74, + 0x20, 0x61, 0x6D, 0x65, 0x74, 0x2C, 0x20, 0x63, 0x6F, 0x6E, 0x73, 0x65, 0x63, 0x74, 0x65, 0x74, + 0x75, 0x72, 0x20, 0x61, 0x64, 0x69, 0x70, 0x69, 0x73, 0x69, 0x63, 0x69, 0x6E, 0x67, 0x20, 0x0A, + 0xA0, 0x01, 0x93, 0x01, 0x24, 0x00, 0x32, 0x9B, 0x09, 0x6C, 0x54, 0xD7, 0x2E, 0x95, 0x6C, 0xF9, + 0xF7, 0x37, 0xD5, 0x1C, 0xE2, 0x46, 0x02, 0x82, 0x75, 0xFB, 0x49, 0x76, 0x8D, 0x73, 0x53, 0xB6, + 0xFD, 0x6D, 0xDB, 0xCA, 0xDB, 0xD9, 0x44, 0x0B, 0xB1, 0x2E, 0xBE, 0x13, 0xB6, 0xBA, 0xA8, 0xE2, + 0xF3, 0xED, 0x75, 0x54, 0xDC, 0x41, 0x20, 0xCC, 0xBF, 0x36, 0x5B, 0x20, 0x99, 0x5D, 0x0F, 0x21, + 0xA1, 0x06, 0xA3, 0x96, 0x2D, 0xB7, 0x97, 0x9C, 0xF0, 0x7B, 0xFE, 0xE2, 0x12, 0x8C, 0x2D, 0x51, + 0xF0, 0xDB, 0x76, 0x77, 0x7D, 0xA4, 0x7B, 0xD3, 0x95, 0xE9, 0xFB, 0x05, 0xE6, 0xF5, 0x97, 0x8F, + 0x62, 0xE9, 0xDB, 0x30, 0xBB, 0xB4, 0x70, 0x3D, 0x16, 0x78, 0x03, 0x77, 0x3A, 0x8B, 0x7A, 0xD5, + 0xB8, 0xF8, 0x4A, 0x27, 0x25, 0xF5, 0x8E, 0xAA, 0x24, 0x14, 0xA6, 0x29, 0x28, 0x6B, 0x2F, 0x73, + 0xE0, 0xA1, 0x71, 0xB4, 0x7B, 0xA4, 0x80, 0x50, 0x40, 0xCA, 0xEF, 0xDB, 0xB4, 0x95, 0xFD, 0xBB, + 0xC1, 0x8C, 0x8E, 0x60, 0x97, 0xDB, 0xCB, 0x7F, 0x21, 0xED, 0xC0, 0x10, 0x71, 0x1A, 0x7D, 0xCB, + 0xCD, 0x09, 0xD0, 0xD9, 0xFF, 0x6D, 0x80, 0xC0, 0x67, 0x7D, 0x3F, 0xC6, 0x94, 0xCF, 0x5B, 0xDD, + 0x51, 0x11, 0xD1, 0xCB, 0xD4, 0x20, 0xD7, 0x2B, 0x84, 0x4E, 0xA8, 0x45, 0xBB, 0x42, 0x78, 0x1A, + 0x68, 0x40, 0x5F, 0x24, 0x5E, 0x89, 0x3A, 0x36, 0x7D, 0xDB, 0x98, 0x28, 0xCC, 0xF9, 0x83, 0xEC, + 0x32, 0x06, 0x31, 0x47, 0x47, 0x3B, 0x6C, 0x1C, 0xF4, 0x62, 0x34, 0x40, 0xB3, 0x28, 0xBB, 0x54, + 0x36, 0xDD, 0x7A, 0x0E, 0x1C, 0x36, 0x25, 0x38, 0x58, 0x06, 0xF8, 0x15, 0xA3, 0xCE, 0x18, 0xC8, + 0xFD, 0x96, 0x1E, 0x69, 0x29, 0x03, 0xC3, 0xBD, 0x27, 0xF3, 0xE7, 0x8F, 0xDB, 0x73, 0xB4, 0x2B, + 0x4F, 0x38, 0x58, 0x24, 0xBF, 0x83, 0x14, 0x39, 0x7E, 0x73, 0xEE, 0xFE, 0xCF, 0xCA, 0xBD, 0xF3, + 0x21, 0x6A, 0x28, 0x80, 0xC8, 0x8E, 0x5D, 0x81, 0xC7, 0xBC, 0x17, 0xD0, 0x2C, 0x93, 0xB5, 0x08, + 0x95, 0xBA, 0x0E, 0x92, 0x82, 0x66, 0xAE, 0xFF, 0xB8, 0x03, 0x00, 0x00, 0xFB, 0x47, 0x48, 0xDB, + 0x00, 0x01, 0xF3, 0x02, 0xC9, 0x03, 0x00, 0x00, 0xDF, 0xF3, 0x90, 0x23, 0x3E, 0x30, 0x0D, 0x8B, + 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_lzma2_5) +{ + // "bad-1-lzma2-5.xz is like bad-1-lzma2-4.xz but doesn't try to reset + // anything in the header of the second chunk." + Array<u8, 408> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x34, 0x4C, 0x6F, 0x72, 0x65, 0x6D, + 0x20, 0x69, 0x70, 0x73, 0x75, 0x6D, 0x20, 0x64, 0x6F, 0x6C, 0x6F, 0x72, 0x20, 0x73, 0x69, 0x74, + 0x20, 0x61, 0x6D, 0x65, 0x74, 0x2C, 0x20, 0x63, 0x6F, 0x6E, 0x73, 0x65, 0x63, 0x74, 0x65, 0x74, + 0x75, 0x72, 0x20, 0x61, 0x64, 0x69, 0x70, 0x69, 0x73, 0x69, 0x63, 0x69, 0x6E, 0x67, 0x20, 0x0A, + 0x80, 0x01, 0x93, 0x01, 0x24, 0x00, 0x32, 0x9B, 0x09, 0x6C, 0x54, 0xD7, 0x2E, 0x95, 0x6C, 0xF9, + 0xF7, 0x37, 0xD5, 0x1C, 0xE2, 0x46, 0x02, 0x82, 0x75, 0xFB, 0x49, 0x76, 0x8D, 0x73, 0x53, 0xB6, + 0xFD, 0x6D, 0xDB, 0xCA, 0xDB, 0xD9, 0x44, 0x0B, 0xB1, 0x2E, 0xBE, 0x13, 0xB6, 0xBA, 0xA8, 0xE2, + 0xF3, 0xED, 0x75, 0x54, 0xDC, 0x41, 0x20, 0xCC, 0xBF, 0x36, 0x5B, 0x20, 0x99, 0x5D, 0x0F, 0x21, + 0xA1, 0x06, 0xA3, 0x96, 0x2D, 0xB7, 0x97, 0x9C, 0xF0, 0x7B, 0xFE, 0xE2, 0x12, 0x8C, 0x2D, 0x51, + 0xF0, 0xDB, 0x76, 0x77, 0x7D, 0xA4, 0x7B, 0xD3, 0x95, 0xE9, 0xFB, 0x05, 0xE6, 0xF5, 0x97, 0x8F, + 0x62, 0xE9, 0xDB, 0x30, 0xBB, 0xB4, 0x70, 0x3D, 0x16, 0x78, 0x03, 0x77, 0x3A, 0x8B, 0x7A, 0xD5, + 0xB8, 0xF8, 0x4A, 0x27, 0x25, 0xF5, 0x8E, 0xAA, 0x24, 0x14, 0xA6, 0x29, 0x28, 0x6B, 0x2F, 0x73, + 0xE0, 0xA1, 0x71, 0xB4, 0x7B, 0xA4, 0x80, 0x50, 0x40, 0xCA, 0xEF, 0xDB, 0xB4, 0x95, 0xFD, 0xBB, + 0xC1, 0x8C, 0x8E, 0x60, 0x97, 0xDB, 0xCB, 0x7F, 0x21, 0xED, 0xC0, 0x10, 0x71, 0x1A, 0x7D, 0xCB, + 0xCD, 0x09, 0xD0, 0xD9, 0xFF, 0x6D, 0x80, 0xC0, 0x67, 0x7D, 0x3F, 0xC6, 0x94, 0xCF, 0x5B, 0xDD, + 0x51, 0x11, 0xD1, 0xCB, 0xD4, 0x20, 0xD7, 0x2B, 0x84, 0x4E, 0xA8, 0x45, 0xBB, 0x42, 0x78, 0x1A, + 0x68, 0x40, 0x5F, 0x24, 0x5E, 0x89, 0x3A, 0x36, 0x7D, 0xDB, 0x98, 0x28, 0xCC, 0xF9, 0x83, 0xEC, + 0x32, 0x06, 0x31, 0x47, 0x47, 0x3B, 0x6C, 0x1C, 0xF4, 0x62, 0x34, 0x40, 0xB3, 0x28, 0xBB, 0x54, + 0x36, 0xDD, 0x7A, 0x0E, 0x1C, 0x36, 0x25, 0x38, 0x58, 0x06, 0xF8, 0x15, 0xA3, 0xCE, 0x18, 0xC8, + 0xFD, 0x96, 0x1E, 0x69, 0x29, 0x03, 0xC3, 0xBD, 0x27, 0xF3, 0xE7, 0x8F, 0xDB, 0x73, 0xB4, 0x2B, + 0x4F, 0x38, 0x58, 0x24, 0xBF, 0x83, 0x14, 0x39, 0x7E, 0x73, 0xEE, 0xFE, 0xCF, 0xCA, 0xBD, 0xF3, + 0x21, 0x6A, 0x28, 0x80, 0xC8, 0x8E, 0x5D, 0x81, 0xC7, 0xBC, 0x17, 0xD0, 0x2C, 0x93, 0xB5, 0x08, + 0x95, 0xBA, 0x0E, 0x92, 0x82, 0x66, 0xAE, 0xFF, 0xB8, 0x03, 0x00, 0x00, 0xFB, 0x47, 0x48, 0xDB, + 0x00, 0x01, 0xF3, 0x02, 0xC9, 0x03, 0x00, 0x00, 0xDF, 0xF3, 0x90, 0x23, 0x3E, 0x30, 0x0D, 0x8B, + 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_lzma2_6) +{ + // "bad-1-lzma2-6.xz has reserved LZMA2 control byte value (0x03)." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x03, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_lzma2_7) +{ + // "bad-1-lzma2-7.xz has EOPM at LZMA level." + Array<u8, 408> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x04, 0xE6, 0xD6, 0xB4, 0x46, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0xE0, 0x01, 0xC8, 0x01, 0x57, 0x5D, 0x00, 0x26, + 0x1B, 0xCA, 0x46, 0x67, 0x5A, 0xF2, 0x77, 0xB8, 0x7D, 0x86, 0xD8, 0x41, 0xDB, 0x05, 0x35, 0xCD, + 0x83, 0xA5, 0x7C, 0x12, 0xA5, 0x05, 0xDB, 0x90, 0xBD, 0x2F, 0x14, 0xD3, 0x71, 0x12, 0x7C, 0x4D, + 0xCD, 0x11, 0xA9, 0xE3, 0x65, 0x01, 0x2E, 0x86, 0x49, 0x86, 0x92, 0x42, 0x32, 0x52, 0x94, 0x2E, + 0x10, 0x5F, 0xB7, 0x8E, 0x8F, 0xFD, 0xF5, 0x1B, 0xC6, 0x26, 0x01, 0xF0, 0xB3, 0xBB, 0xBB, 0x6E, + 0xC5, 0x7A, 0x96, 0xE1, 0xDF, 0xC8, 0x34, 0xC3, 0xF5, 0x4F, 0x83, 0x06, 0x28, 0x51, 0x81, 0x64, + 0xF9, 0x80, 0x6A, 0x71, 0x47, 0xD0, 0xE2, 0xA6, 0xD6, 0x0D, 0x64, 0x31, 0xCF, 0x8A, 0x30, 0x62, + 0xFB, 0x73, 0x35, 0x4A, 0x10, 0x05, 0xC4, 0xCE, 0xEF, 0xB4, 0xFE, 0xD3, 0x85, 0x36, 0xE0, 0xE9, + 0x67, 0xC0, 0xF0, 0xB5, 0xA1, 0x1E, 0x52, 0x58, 0x54, 0xDD, 0x40, 0x56, 0xF8, 0x9B, 0xF3, 0x59, + 0xF1, 0xD6, 0xE0, 0x7A, 0x06, 0x56, 0x3C, 0x3D, 0xBD, 0x15, 0x81, 0xBB, 0x3A, 0xEB, 0x85, 0x0E, + 0x12, 0xAA, 0xB1, 0x60, 0x59, 0x6C, 0xBE, 0x40, 0x8E, 0x8D, 0xAE, 0x01, 0x96, 0x28, 0x7A, 0x13, + 0x71, 0x3C, 0x53, 0x87, 0x35, 0x93, 0xBA, 0xE2, 0x25, 0xEA, 0xB5, 0x35, 0xAE, 0x50, 0x4E, 0xBE, + 0xE0, 0xDD, 0x0C, 0xBA, 0x8A, 0xC3, 0xF0, 0x24, 0x17, 0xF6, 0xF0, 0xE4, 0xCC, 0xDB, 0xBD, 0x27, + 0x2B, 0xB7, 0xAB, 0xC1, 0x95, 0x62, 0xB0, 0xBF, 0x80, 0x95, 0xA8, 0x08, 0x02, 0x7F, 0xD1, 0xD6, + 0x2B, 0x77, 0x8D, 0x1C, 0x6E, 0xCE, 0xA5, 0xD9, 0xDA, 0x5D, 0xD3, 0xE6, 0x8B, 0xB5, 0xE7, 0x79, + 0x41, 0xA6, 0xD3, 0x9E, 0x7D, 0x27, 0xBC, 0x49, 0x99, 0x85, 0x0B, 0xF1, 0x0E, 0x45, 0x1E, 0xFB, + 0x2A, 0xF7, 0xD7, 0x0E, 0x7C, 0xCF, 0xF0, 0xF4, 0x52, 0x48, 0x18, 0x7B, 0x11, 0x4B, 0xF1, 0xB9, + 0xA9, 0x81, 0xE9, 0x27, 0x0A, 0x37, 0xC3, 0x55, 0xBD, 0xB4, 0x55, 0xDB, 0xAD, 0xB7, 0xDF, 0x79, + 0x9F, 0x46, 0xB5, 0x95, 0x4B, 0x79, 0x7B, 0x11, 0xD9, 0x2D, 0x13, 0xE3, 0x08, 0xD5, 0xA1, 0x84, + 0xA0, 0x41, 0x3B, 0x6E, 0x11, 0xD3, 0x36, 0xF9, 0x7A, 0x55, 0x54, 0x10, 0xDF, 0x06, 0xE1, 0x4C, + 0xD7, 0x57, 0x49, 0xBD, 0x66, 0x69, 0x7D, 0x1B, 0xA0, 0xE1, 0x83, 0x68, 0x08, 0x1D, 0xA0, 0xFD, + 0x34, 0x86, 0x9E, 0x0D, 0xC1, 0x20, 0x1B, 0x65, 0x75, 0xDD, 0x3B, 0x5F, 0x73, 0xCA, 0xC2, 0x83, + 0xFF, 0xFF, 0xE8, 0x6A, 0x51, 0xD8, 0x00, 0x00, 0xB2, 0x07, 0x44, 0xE9, 0x17, 0x33, 0x4B, 0x84, + 0x00, 0x01, 0xF3, 0x02, 0xC9, 0x03, 0x00, 0x00, 0xDF, 0xF3, 0x90, 0x23, 0xB1, 0xC4, 0x67, 0xFB, + 0x02, 0x00, 0x00, 0x00, 0x00, 0x04, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_lzma2_8) +{ + // "bad-1-lzma2-8.xz is like good-1-lzma2-4.xz but doesn't set new + // properties in the third LZMA2 chunk." + Array<u8, 464> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x04, 0xE6, 0xD6, 0xB4, 0x46, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0xE0, 0x00, 0xBB, 0x00, 0xA1, 0x5D, 0x00, 0x26, + 0x1B, 0xCA, 0x46, 0x67, 0x5A, 0xF2, 0x77, 0xB8, 0x7D, 0x86, 0xD8, 0x41, 0xDB, 0x05, 0x35, 0xCD, + 0x83, 0xA5, 0x7C, 0x12, 0xA5, 0x05, 0xDB, 0x90, 0xBD, 0x2F, 0x14, 0xD3, 0x71, 0x72, 0x96, 0xA8, + 0x8A, 0x7D, 0x84, 0x56, 0x71, 0x8D, 0x6A, 0x22, 0x98, 0xAB, 0x9E, 0x3D, 0x90, 0x80, 0x2D, 0xC7, + 0x5E, 0x0C, 0x12, 0x52, 0xD3, 0x3F, 0x07, 0x08, 0x7B, 0x1C, 0xA4, 0x77, 0xF3, 0x13, 0xB8, 0x17, + 0xC0, 0xEE, 0x91, 0x73, 0xCA, 0xBC, 0xCF, 0xEB, 0x34, 0x66, 0xAC, 0x48, 0x9B, 0x69, 0xD9, 0x93, + 0x07, 0xAE, 0xCE, 0x50, 0xAF, 0x68, 0x09, 0x2F, 0x5B, 0x88, 0x1F, 0xC2, 0x08, 0xA2, 0x2C, 0x58, + 0x45, 0xB0, 0xFF, 0x62, 0x09, 0xEB, 0xEE, 0xDB, 0x63, 0x4F, 0x6F, 0xE0, 0xF3, 0x1F, 0xCF, 0x12, + 0x37, 0x98, 0x96, 0x4E, 0xF6, 0xF2, 0xB2, 0xFB, 0x6E, 0xAF, 0x44, 0x02, 0xE2, 0x22, 0xDE, 0xD5, + 0xE6, 0x34, 0x97, 0x39, 0xA3, 0x45, 0x2F, 0xAE, 0x99, 0x2F, 0x79, 0x69, 0x8F, 0xE9, 0x37, 0x89, + 0x48, 0xFE, 0xCC, 0x7E, 0xEA, 0xA9, 0x28, 0xAD, 0xC3, 0xE6, 0xDC, 0xB9, 0xDA, 0xAA, 0x16, 0x7E, + 0x01, 0x00, 0x26, 0x6C, 0x61, 0x62, 0x6F, 0x72, 0x69, 0x73, 0x20, 0x6E, 0x69, 0x73, 0x69, 0x20, + 0x75, 0x74, 0x20, 0x61, 0x6C, 0x69, 0x71, 0x75, 0x69, 0x70, 0x20, 0x65, 0x78, 0x20, 0x65, 0x61, + 0x20, 0x63, 0x6F, 0x6D, 0x6D, 0x6F, 0x64, 0x6F, 0x20, 0x0A, 0xA0, 0x00, 0xE5, 0x00, 0xBD, 0x00, + 0x31, 0x9B, 0xCA, 0x19, 0xC5, 0x54, 0xEC, 0xB6, 0x54, 0xE7, 0xB1, 0x7D, 0xC4, 0x57, 0x9E, 0x6C, + 0x89, 0xAD, 0x4A, 0x6D, 0x16, 0xD8, 0x3C, 0x05, 0x94, 0x10, 0x16, 0x99, 0x38, 0x21, 0xA3, 0xB9, + 0xC5, 0x80, 0xFF, 0xFC, 0xEE, 0xD4, 0xD5, 0x3F, 0xDD, 0x8C, 0xD7, 0x3D, 0x8F, 0x76, 0xEC, 0x88, + 0xAA, 0x32, 0xAB, 0x65, 0xD4, 0x38, 0xEF, 0xF7, 0xF9, 0x8A, 0xBF, 0xF7, 0xF8, 0xA5, 0x56, 0xD7, + 0x6D, 0xD7, 0x3F, 0x85, 0x0B, 0x9E, 0x3F, 0xE2, 0x47, 0x68, 0x22, 0x08, 0x05, 0x35, 0xB8, 0x41, + 0x72, 0xF9, 0xDB, 0xBE, 0xB7, 0x8E, 0x86, 0xBF, 0x43, 0x4B, 0x8E, 0x0D, 0x43, 0x2F, 0x41, 0x69, + 0xDF, 0x61, 0x0C, 0xC4, 0xE8, 0x37, 0x08, 0x4A, 0xDE, 0xC2, 0x76, 0x16, 0xB8, 0x48, 0x4E, 0x9E, + 0xB9, 0x53, 0x50, 0x1F, 0x33, 0x83, 0xE8, 0x29, 0xA0, 0x67, 0xC8, 0x66, 0x3A, 0x7F, 0x22, 0x12, + 0x62, 0xFB, 0x47, 0xE4, 0xBC, 0xF4, 0x51, 0x0F, 0x15, 0x88, 0x49, 0xD8, 0xCA, 0x0B, 0x25, 0x8B, + 0x5E, 0xE8, 0xDA, 0xFD, 0x38, 0xC0, 0xCE, 0x4C, 0x73, 0x1B, 0xFF, 0xD0, 0x9B, 0xE8, 0x4C, 0xB7, + 0x13, 0xF8, 0x37, 0x99, 0xE2, 0xDA, 0x9C, 0x2F, 0xB5, 0xEA, 0xB8, 0xA5, 0x8D, 0xEA, 0x57, 0x82, + 0x9B, 0x25, 0xCA, 0xFB, 0xF6, 0x88, 0x0A, 0x9B, 0xDF, 0x41, 0x03, 0x6E, 0x00, 0x00, 0x00, 0x00, + 0xB2, 0x07, 0x44, 0xE9, 0x17, 0x33, 0x4B, 0x84, 0x00, 0x01, 0xAA, 0x03, 0xC9, 0x03, 0x00, 0x00, + 0x50, 0x83, 0x71, 0x35, 0xB1, 0xC4, 0x67, 0xFB, 0x02, 0x00, 0x00, 0x00, 0x00, 0x04, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_lzma2_9) +{ + // "bad-1-lzma2-9.xz has LZMA2 stream that is truncated at the end of + // a LZMA2 chunk (no end marker). The uncompressed size of the partial + // LZMA2 stream exceeds the value stored in the Block Header." + Array<u8, 72> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x03, 0xC0, 0x14, 0x0D, + 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3B, 0x15, 0x10, 0x0D, 0x01, 0x00, 0x0C, 0x48, + 0x65, 0x6C, 0x6C, 0x6F, 0x0A, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x02, 0xFF, 0xFF, 0x78, + 0x43, 0xA3, 0xA2, 0x15, 0x00, 0x01, 0x28, 0x0D, 0x3C, 0x67, 0x6A, 0x03, 0x90, 0x42, 0x99, 0x0D, + 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_lzma2_10) +{ + // "bad-1-lzma2-10.xz has LZMA2 stream that, from point of view of a + // LZMA2 decoder, extends past the end of Block (and even the end of + // the file). Uncompressed Size in Block Header is bigger than the + // invalid LZMA2 stream may produce (even if a decoder reads until + // the end of the file). The Check type is None to nullify certain + // simple size-based sanity checks in a Block decoder." + Array<u8, 60> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x00, 0xFF, 0x12, 0xD9, 0x41, 0x02, 0xC0, 0x10, 0x30, + 0x21, 0x01, 0x08, 0x00, 0xE6, 0xD5, 0x78, 0x98, 0x01, 0xFF, 0xFF, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x01, 0x1C, 0x30, 0xDA, 0xD8, 0x28, 0xE0, + 0x06, 0x72, 0x9E, 0x7A, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_lzma2_11) +{ + // "bad-1-lzma2-11.xz has LZMA2 stream that lacks the end of + // payload marker. When Compressed Size bytes have been decoded, + // Uncompressed Size bytes of output will have been produced but + // the LZMA2 decoder doesn't indicate end of stream." + Array<u8, 64> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x00, 0xFF, 0x12, 0xD9, 0x41, 0x03, 0xC0, 0x10, 0x0D, + 0x21, 0x01, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x57, 0xF7, 0x6A, 0x9F, 0x01, 0x00, 0x0C, 0x48, + 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x01, 0x20, 0x0D, + 0x34, 0xED, 0xB3, 0xCB, 0x06, 0x72, 0x9E, 0x7A, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_stream_flags_1) +{ + // "bad-1-stream_flags-1.xz has different Stream Flags in Stream Header + // and Stream Footer." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x2A, 0x13, 0x90, 0x94, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x02, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_stream_flags_2) +{ + // "bad-1-stream_flags-2.xz has wrong CRC32 in Stream Header." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x76, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor_or_error = Compress::XzDecompressor::create(move(stream)); + EXPECT(decompressor_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_stream_flags_3) +{ + // "bad-1-stream_flags-3.xz has wrong CRC32 in Stream Footer." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x98, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_vli_1) +{ + // "bad-1-vli-1.xz has two-byte variable-length integer in the + // Uncompressed Size field in Block Header while one-byte would be enough + // for that value. It's important that the file gets rejected due to too + // big integer encoding instead of due to Uncompressed Size not matching + // the value stored in the Block Header. That is, the decoder must not + // try to decode the Compressed Data field." + Array<u8, 72> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x03, 0x80, 0x8D, 0x00, + 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0xA0, 0x48, 0xA9, 0x17, 0x01, 0x00, 0x0C, 0x48, + 0x65, 0x6C, 0x6C, 0x6F, 0x0A, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, 0x00, 0x00, + 0x43, 0xA3, 0xA2, 0x15, 0x00, 0x01, 0x25, 0x0D, 0x71, 0x19, 0xC4, 0xB6, 0x90, 0x42, 0x99, 0x0D, + 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_1_vli_2) +{ + // "bad-1-vli-2.xz has ten-byte variable-length integer as Uncompressed + // Size in Block Header. It's important that the file gets rejected due + // to too big integer encoding instead of due to Uncompressed Size not + // matching the value stored in the Block Header. That is, the decoder + // must not try to decode the Compressed Data field." + Array<u8, 76> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x04, 0x80, 0x8D, 0x80, + 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x01, 0x21, 0x01, 0x08, 0x00, 0xD2, 0x64, 0xF0, 0x5C, + 0x01, 0x00, 0x0C, 0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x0A, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, + 0x00, 0x00, 0x00, 0x00, 0x43, 0xA3, 0xA2, 0x15, 0x00, 0x01, 0x29, 0x0D, 0x7D, 0x56, 0x71, 0x1A, + 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_2_compressed_data_padding) +{ + // "bad-2-compressed_data_padding.xz has non-null byte in the padding of + // the Compressed Data field of the first Block." + Array<u8, 92> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x00, 0x00, 0x01, 0x16, 0x35, 0x96, 0x31, 0x02, 0x00, 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, + 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, + 0xDD, 0xD1, 0xCA, 0x53, 0x00, 0x02, 0x1A, 0x06, 0x1B, 0x07, 0x00, 0x00, 0x06, 0xDC, 0xE7, 0x5D, + 0x3E, 0x30, 0x0D, 0x8B, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_2_index_1) +{ + // "bad-2-index-1.xz has wrong Unpadded Sizes in Index." + Array<u8, 92> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x00, 0x00, 0x00, 0x16, 0x35, 0x96, 0x31, 0x02, 0x00, 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, + 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, + 0xDD, 0xD1, 0xCA, 0x53, 0x00, 0x02, 0x1B, 0x06, 0x1A, 0x07, 0x00, 0x00, 0xC6, 0x68, 0x07, 0x2E, + 0x3E, 0x30, 0x0D, 0x8B, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: The index is currently not checked against the actual blocks. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_2_index_2) +{ + // "bad-2-index-2.xz has wrong Uncompressed Sizes in Index." + Array<u8, 92> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x00, 0x00, 0x00, 0x16, 0x35, 0x96, 0x31, 0x02, 0x00, 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, + 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, + 0xDD, 0xD1, 0xCA, 0x53, 0x00, 0x02, 0x1A, 0x0D, 0x1B, 0x00, 0x00, 0x00, 0x92, 0xFB, 0x78, 0x2F, + 0x3E, 0x30, 0x0D, 0x8B, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: The index is currently not checked against the actual blocks. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_2_index_3) +{ + // "bad-2-index-3.xz has non-null byte in Index Padding." + Array<u8, 92> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x00, 0x00, 0x00, 0x16, 0x35, 0x96, 0x31, 0x02, 0x00, 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, + 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, + 0xDD, 0xD1, 0xCA, 0x53, 0x00, 0x02, 0x1A, 0x06, 0x1B, 0x07, 0x00, 0x01, 0x90, 0xEC, 0xE0, 0x2A, + 0x3E, 0x30, 0x0D, 0x8B, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_2_index_4) +{ + // "bad-2-index-4.xz wrong CRC32 in Index." + Array<u8, 92> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x00, 0x00, 0x00, 0x16, 0x35, 0x96, 0x31, 0x02, 0x00, 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, + 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, + 0xDD, 0xD1, 0xCA, 0x53, 0x00, 0x02, 0x1A, 0x06, 0x1B, 0x07, 0x00, 0x00, 0x06, 0xDC, 0xE7, 0x5C, + 0x3E, 0x30, 0x0D, 0x8B, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: The index is currently not checked against the stored CRC32. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_bad_2_index_5) +{ + // "bad-2-index-5.xz has zero as Unpadded Size. It is important that the + // file gets rejected specifically due to Unpadded Size having an invalid + // value." + Array<u8, 92> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x00, 0x00, 0x00, 0x16, 0x35, 0x96, 0x31, 0x02, 0x00, 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, + 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, + 0xDD, 0xD1, 0xCA, 0x53, 0x00, 0x02, 0x35, 0x06, 0x00, 0x07, 0x00, 0x00, 0x7B, 0xBB, 0x05, 0x2C, + 0x3E, 0x30, 0x0D, 0x8B, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_bad_3_index_uncomp_overflow) +{ + // "bad-3-index-uncomp-overflow.xz has Index whose Uncompressed Size + // fields have huge values whose sum exceeds the maximum allowed size + // of 2^63 - 1 bytes. In this file the sum is exactly 2^64." + Array<u8, 132> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x0C, 0x00, 0x00, 0x00, 0x8F, 0x98, 0x41, 0x9C, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x00, 0x00, 0x00, 0x16, 0x35, 0x96, 0x31, 0x02, 0x00, 0x21, 0x01, 0x0C, 0x00, 0x00, 0x00, + 0x8F, 0x98, 0x41, 0x9C, 0x01, 0x00, 0x04, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x00, 0x00, 0x00, 0x00, + 0x47, 0x3E, 0xB6, 0xFB, 0x02, 0x00, 0x21, 0x01, 0x0C, 0x00, 0x00, 0x00, 0x8F, 0x98, 0x41, 0x9C, + 0x01, 0x00, 0x01, 0x21, 0x0A, 0x00, 0x00, 0x00, 0x02, 0xEE, 0x93, 0x2D, 0x00, 0x03, 0x1A, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x19, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0x7F, 0x16, 0x02, 0x32, 0x89, 0xCE, 0x34, 0x28, 0x72, 0x9C, 0x10, 0x06, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: The index is currently not checked against the actual blocks, so the overflow never occurs in the first place. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +auto const xz_utils_hello_world = "Hello\nWorld!\n"sv; +auto const xz_utils_lorem_ipsum = R"(Lorem ipsum dolor sit amet, consectetur adipisicing +elit, sed do eiusmod tempor incididunt ut +labore et dolore magna aliqua. Ut enim +ad minim veniam, quis nostrud exercitation ullamco +laboris nisi ut aliquip ex ea commodo +consequat. Duis aute irure dolor in reprehenderit +in voluptate velit esse cillum dolore eu +fugiat nulla pariatur. Excepteur sint occaecat cupidatat +non proident, sunt in culpa qui officia +deserunt mollit anim id est laborum. +)"sv; + +TEST_CASE(xz_utils_good_0cat_empty) +{ + // "good-0cat-empty.xz has two zero-Block Streams concatenated without + // Stream Padding." + Array<u8, 64> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A, + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.size(), 0ul); +} + +TEST_CASE(xz_utils_good_0catpad_empty) +{ + // "good-0catpad-empty.xz has two zero-Block Streams concatenated with + // four-byte Stream Padding between the Streams." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A, + 0x00, 0x00, 0x00, 0x00, 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, + 0x00, 0x00, 0x00, 0x00, 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.size(), 0ul); +} + +TEST_CASE(xz_utils_good_0_empty) +{ + // "good-0-empty.xz has one Stream with no Blocks." + Array<u8, 32> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.size(), 0ul); +} + +TEST_CASE(xz_utils_good_0pad_empty) +{ + // "good-0pad-empty.xz has one Stream with no Blocks followed by + // four-byte Stream Padding." + Array<u8, 36> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x00, 0x00, 0x00, 0x00, + 0x1C, 0xDF, 0x44, 0x21, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A, + 0x00, 0x00, 0x00, 0x00 + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.size(), 0ul); +} + +TEST_CASE(xz_utils_good_1_3delta_lzma2) +{ + // "good-1-3delta-lzma2.xz has three Delta filters and LZMA2." + Array<u8, 528> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x04, 0xE6, 0xD6, 0xB4, 0x46, 0x04, 0x03, 0x03, 0x01, + 0x00, 0x03, 0x01, 0x01, 0x03, 0x01, 0x02, 0x21, 0x01, 0x08, 0x00, 0x00, 0xBC, 0x15, 0x65, 0xC6, + 0x01, 0x01, 0xC8, 0x4C, 0x23, 0xB7, 0x84, 0xE2, 0x09, 0x71, 0x4F, 0xFA, 0xBA, 0xA1, 0xF7, 0x51, + 0x63, 0x08, 0xAC, 0xAE, 0xF2, 0x58, 0x42, 0x0D, 0x66, 0xEE, 0xA8, 0x01, 0xCD, 0x60, 0x2E, 0x88, + 0x58, 0xD7, 0x6E, 0xDB, 0x3D, 0x26, 0x00, 0x05, 0xF1, 0xFB, 0xAF, 0x34, 0x67, 0x17, 0xC0, 0x9F, + 0x3F, 0xF9, 0xFC, 0x0D, 0x0E, 0x03, 0xA4, 0xE6, 0xAF, 0x69, 0xB1, 0x62, 0x9E, 0x47, 0x97, 0x43, + 0xC3, 0x2F, 0x47, 0xA3, 0xA3, 0xF5, 0x04, 0x5A, 0xC0, 0x9B, 0x3D, 0x01, 0xCC, 0x5B, 0x3A, 0xFA, + 0xB3, 0xC2, 0x4C, 0x9D, 0x4F, 0x57, 0xFD, 0xBB, 0xAF, 0x53, 0xFF, 0x06, 0xFF, 0xF5, 0xA7, 0x51, + 0x5E, 0xA4, 0x9C, 0x63, 0xB4, 0xB4, 0x62, 0xF7, 0x47, 0xA0, 0x50, 0x6E, 0xAF, 0xE3, 0x0B, 0x52, + 0xC3, 0xA7, 0x37, 0xC0, 0x54, 0x49, 0x01, 0xB9, 0xB4, 0xFF, 0x3B, 0x5F, 0x04, 0xAF, 0xBB, 0x28, + 0xCC, 0xFF, 0x84, 0x64, 0x71, 0xBE, 0x30, 0x3F, 0xD5, 0x5B, 0x30, 0xA9, 0x61, 0x7F, 0xA6, 0x27, + 0x53, 0xB5, 0xBF, 0x00, 0x53, 0x3D, 0xFB, 0xBA, 0xB3, 0x5E, 0xBB, 0xF9, 0x81, 0x49, 0xBB, 0x74, + 0xA9, 0xA1, 0x4E, 0xFD, 0xBC, 0xA6, 0x4C, 0xF1, 0xBF, 0x54, 0x66, 0xEF, 0xA4, 0xAD, 0x51, 0x20, + 0xE3, 0x0F, 0xEE, 0x0C, 0x02, 0xA4, 0x63, 0x3B, 0xFF, 0xA8, 0xC7, 0x56, 0x02, 0xAF, 0xDD, 0xB1, + 0x50, 0xC1, 0x67, 0xF7, 0x4B, 0xEF, 0xB4, 0x5A, 0x47, 0x06, 0xB7, 0x5F, 0xA3, 0x4D, 0xAA, 0xE3, + 0x17, 0x65, 0xBB, 0xA8, 0x30, 0x06, 0xB5, 0x52, 0x60, 0xA7, 0xF4, 0xF1, 0x17, 0x15, 0xF9, 0x41, + 0xAD, 0xB7, 0x3A, 0x15, 0xB8, 0xEA, 0x9F, 0x66, 0xC7, 0x51, 0xD1, 0x61, 0x19, 0xED, 0x08, 0xBC, + 0xFF, 0x5B, 0x71, 0xF1, 0x6F, 0x7A, 0x67, 0x8E, 0x05, 0xA6, 0x55, 0x9A, 0x71, 0xFE, 0x9C, 0xA2, + 0x04, 0x5D, 0x60, 0xFB, 0xA7, 0xB6, 0xF2, 0x4E, 0x51, 0xBE, 0x07, 0xEA, 0x50, 0xC2, 0xA7, 0x48, + 0xFB, 0x1E, 0xF8, 0xEE, 0x11, 0xFD, 0x06, 0x9E, 0xE9, 0xB5, 0x66, 0x74, 0x9E, 0x2C, 0x54, 0xBF, + 0xB7, 0x54, 0xE2, 0x11, 0x09, 0xB6, 0x56, 0x30, 0x09, 0xA9, 0xD0, 0xFE, 0x2C, 0x5E, 0x0C, 0xAA, + 0x59, 0x96, 0x67, 0x05, 0xA9, 0xBB, 0x38, 0xB0, 0x46, 0x60, 0x0F, 0xAC, 0xAE, 0x37, 0xC0, 0x4C, + 0x65, 0xAE, 0x88, 0x5C, 0xBF, 0xBC, 0x42, 0xE1, 0x7B, 0xC1, 0x35, 0x4A, 0xF5, 0xBE, 0xA3, 0x16, + 0x62, 0x34, 0x02, 0xAB, 0xB5, 0x5B, 0x03, 0x03, 0x9F, 0xEC, 0x7F, 0x86, 0xD1, 0x66, 0xDF, 0x3C, + 0x17, 0xEC, 0x0A, 0xB8, 0x4A, 0x3C, 0x14, 0xBA, 0x5F, 0x97, 0x38, 0x0A, 0xC1, 0xBC, 0x4F, 0xF0, + 0x11, 0xAE, 0x36, 0x51, 0x0A, 0xB7, 0x9A, 0x4C, 0x31, 0xF0, 0xFC, 0xA7, 0xE7, 0xB8, 0x58, 0xC4, + 0xF9, 0x3A, 0xB5, 0xFC, 0xA7, 0xAE, 0x5A, 0x16, 0x07, 0xA8, 0xE0, 0x96, 0x5F, 0xB8, 0x69, 0xA5, + 0x9D, 0x55, 0xB6, 0xFB, 0x07, 0x4B, 0xB4, 0x9A, 0x07, 0x6E, 0x4B, 0xE8, 0x53, 0x16, 0x9D, 0xFE, + 0xB1, 0xBA, 0x52, 0xF2, 0xBF, 0xEF, 0x9D, 0x5E, 0xC2, 0x56, 0xE8, 0x5D, 0xFB, 0x04, 0xA2, 0x5B, + 0x53, 0xFD, 0xB7, 0xAA, 0x5B, 0xB1, 0x36, 0x56, 0x0B, 0xC1, 0x57, 0x8B, 0x51, 0xBB, 0x05, 0x0A, + 0x49, 0x54, 0xF9, 0x8D, 0x17, 0xCD, 0xB9, 0x41, 0xDD, 0xBC, 0x04, 0x34, 0x00, 0x00, 0x00, 0x00, + 0xB2, 0x07, 0x44, 0xE9, 0x17, 0x33, 0x4B, 0x84, 0x00, 0x01, 0xE9, 0x03, 0xC9, 0x03, 0x00, 0x00, + 0x92, 0xFB, 0xBD, 0xBC, 0xB1, 0xC4, 0x67, 0xFB, 0x02, 0x00, 0x00, 0x00, 0x00, 0x04, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: This uses the currently unimplemented delta filter. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_good_1_arm64_lzma2_1) +{ + // "good-1-arm64-lzma2-1.xz uses the ARM64 filter and LZMA2. The + // uncompressed data is constructed so that it tests integer + // wrap around and sign extension." + Array<u8, 512> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x01, 0x0A, 0x00, + 0x21, 0x01, 0x08, 0x00, 0xA2, 0xD8, 0x7E, 0xF1, 0xE0, 0x21, 0x7F, 0x01, 0xC3, 0x6E, 0x00, 0x00, + 0x68, 0x23, 0x88, 0x71, 0x63, 0xC2, 0x8F, 0x53, 0x0A, 0xE6, 0xB1, 0xDF, 0xD0, 0x8A, 0xAE, 0x1B, + 0xA1, 0xB0, 0x78, 0xAB, 0x28, 0x43, 0x13, 0x5E, 0x7F, 0xE4, 0x97, 0xC5, 0x69, 0xCF, 0xC1, 0x0A, + 0xCD, 0xDA, 0x89, 0x2E, 0x3A, 0x9E, 0xF2, 0xAC, 0x4F, 0x83, 0xDC, 0x79, 0xB5, 0x0B, 0xC3, 0xFB, + 0xF1, 0xF8, 0x14, 0x14, 0xBA, 0xA1, 0xF6, 0xC3, 0x11, 0x97, 0x9E, 0x53, 0x71, 0x7A, 0x6B, 0x4D, + 0xDE, 0x7F, 0xAB, 0xB5, 0x81, 0x19, 0xD2, 0x87, 0xB3, 0x8E, 0x59, 0xCC, 0xAD, 0x32, 0xF5, 0x73, + 0x9A, 0x90, 0x0D, 0x99, 0x7D, 0x46, 0x55, 0x52, 0xA0, 0x15, 0x03, 0xE7, 0x1C, 0xF0, 0x97, 0x4F, + 0xAF, 0xC1, 0x8B, 0xCA, 0x2B, 0x76, 0x63, 0xC6, 0xD3, 0xDC, 0x68, 0xD9, 0xBF, 0x04, 0x20, 0x1A, + 0x1D, 0x80, 0x25, 0x28, 0x83, 0x30, 0x32, 0xA3, 0x64, 0xE4, 0x26, 0xDD, 0xC0, 0x16, 0xD6, 0x8B, + 0xB0, 0x11, 0x37, 0x88, 0xBD, 0xE2, 0xD9, 0xBC, 0x2D, 0xB7, 0x45, 0x3C, 0xCA, 0x5A, 0x0F, 0xAA, + 0x26, 0x98, 0x9D, 0xB9, 0xF8, 0x18, 0xA3, 0x55, 0xCD, 0xAE, 0x02, 0x30, 0x27, 0xF2, 0x62, 0xA8, + 0x0D, 0x0D, 0x20, 0x4D, 0xB1, 0x80, 0xAA, 0x48, 0x92, 0x7C, 0x98, 0x99, 0x5A, 0x8E, 0x0F, 0x5F, + 0xF8, 0x58, 0x7E, 0x5F, 0x79, 0x36, 0xF3, 0xD8, 0x3C, 0xEF, 0x03, 0xD4, 0x50, 0x2A, 0xB7, 0xC9, + 0x3A, 0x3C, 0xA6, 0xEB, 0x33, 0x8A, 0xD7, 0xFB, 0x8C, 0xBE, 0x31, 0xD3, 0x76, 0x72, 0x2E, 0x6B, + 0x89, 0x1F, 0x27, 0x74, 0xE1, 0x02, 0xF7, 0x5D, 0x1E, 0x59, 0xE0, 0x6F, 0xE1, 0xDD, 0xCC, 0xF9, + 0x90, 0xCB, 0x27, 0x59, 0xA0, 0xA3, 0x6F, 0x96, 0x73, 0x82, 0xCF, 0x4D, 0x71, 0x21, 0x1E, 0x4E, + 0xBF, 0xCF, 0xD0, 0x29, 0xB2, 0xCF, 0x56, 0x6E, 0x21, 0x8F, 0xC8, 0x77, 0x95, 0xEB, 0x6A, 0xEF, + 0x3C, 0xDC, 0x00, 0x76, 0xB0, 0x94, 0x63, 0x70, 0x8C, 0x94, 0x5F, 0x7F, 0x1F, 0x83, 0xF9, 0x1F, + 0xCE, 0x64, 0x4F, 0x45, 0xBD, 0xF8, 0x13, 0x5A, 0x78, 0x0C, 0x1A, 0xDF, 0xE4, 0x0B, 0xDC, 0xBA, + 0x07, 0x33, 0xEC, 0x53, 0xA9, 0xFB, 0x31, 0xE5, 0xCC, 0xC3, 0x87, 0x95, 0x90, 0xF5, 0x93, 0x8E, + 0x02, 0xEE, 0xE3, 0x56, 0xA6, 0xF9, 0xD3, 0xA3, 0x78, 0xA5, 0x08, 0x24, 0xBC, 0x1E, 0x2A, 0xA9, + 0x99, 0x78, 0x4B, 0xE8, 0xBB, 0x73, 0x47, 0xCE, 0x08, 0x0C, 0x5A, 0x01, 0xCE, 0xE1, 0xC5, 0x9D, + 0x85, 0xDC, 0xD4, 0x19, 0x59, 0xB5, 0x3D, 0xAF, 0xF5, 0xA4, 0xCF, 0x66, 0x12, 0xFD, 0x5B, 0xFE, + 0x0A, 0x7A, 0xEE, 0xF7, 0x61, 0x81, 0x0A, 0x06, 0x09, 0x5D, 0xCB, 0x10, 0xC5, 0x6F, 0x68, 0x4F, + 0xED, 0xED, 0x97, 0xC7, 0x37, 0x1F, 0xDE, 0x6D, 0x2D, 0xC2, 0x26, 0xA0, 0xE6, 0x94, 0x18, 0x06, + 0xC3, 0xA8, 0xC0, 0x0F, 0x4C, 0xE3, 0x1C, 0x0A, 0x9B, 0x03, 0xF7, 0x10, 0xB6, 0x81, 0xAB, 0x8A, + 0x5D, 0xAE, 0x0C, 0xAA, 0xA8, 0xAB, 0xB1, 0x65, 0x55, 0x7F, 0x33, 0x52, 0xF6, 0x23, 0x0F, 0xAC, + 0x21, 0xA4, 0xC5, 0xF1, 0x44, 0x9D, 0xE0, 0xB7, 0x39, 0x6D, 0x2D, 0x48, 0x20, 0x8C, 0x81, 0x51, + 0x50, 0x60, 0xEF, 0xA1, 0x00, 0x71, 0xD9, 0xE3, 0xB5, 0x4F, 0xFD, 0x57, 0xB6, 0x0E, 0xFC, 0x40, + 0x48, 0xD3, 0x00, 0x00, 0xA0, 0x7C, 0xE1, 0xD4, 0x00, 0x01, 0xDB, 0x03, 0x80, 0x43, 0x00, 0x00, + 0x43, 0xC7, 0x89, 0x63, 0x3E, 0x30, 0x0D, 0x8B, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: This uses the currently unimplemented arm64 filter. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_good_1_arm64_lzma2_2) +{ + // "good-1-arm64-lzma2-2.xz is like good-1-arm64-lzma2-1.xz but with + // non-zero start offset." + Array<u8, 512> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x03, 0x01, 0x0A, 0x04, + 0x00, 0xF0, 0xFF, 0xFF, 0x21, 0x01, 0x08, 0x00, 0x67, 0x74, 0x40, 0x1C, 0xE0, 0x21, 0x7F, 0x01, + 0xA6, 0x6E, 0x00, 0x00, 0x3F, 0x1E, 0xEC, 0xFA, 0xC9, 0x8B, 0xE0, 0xE3, 0xD4, 0xE5, 0xEC, 0x75, + 0x8B, 0x62, 0x01, 0xD1, 0xB9, 0xAE, 0x17, 0xB3, 0xE1, 0x01, 0x82, 0xB1, 0x88, 0x36, 0x96, 0x7C, + 0xD3, 0x5E, 0x60, 0x14, 0x52, 0xE3, 0xD7, 0x99, 0x0D, 0x4E, 0x26, 0x37, 0x2E, 0xAA, 0xF2, 0xAE, + 0x49, 0x93, 0xF8, 0xCF, 0x48, 0x00, 0xAF, 0x88, 0xFE, 0x05, 0x57, 0xE7, 0x5C, 0xB8, 0x85, 0xAA, + 0x38, 0x18, 0x49, 0x6D, 0x35, 0xC7, 0x64, 0xC5, 0xD5, 0x19, 0xAB, 0x99, 0x05, 0x8F, 0x64, 0x29, + 0x5B, 0x39, 0xE3, 0x0A, 0xC0, 0x1C, 0xE6, 0x69, 0xF4, 0x7A, 0xCC, 0x0A, 0x06, 0xDD, 0xE5, 0x26, + 0x53, 0xC9, 0xA9, 0xAF, 0x2F, 0x44, 0x22, 0x3D, 0xE5, 0x96, 0x3B, 0x40, 0x50, 0xE5, 0x00, 0xE1, + 0xF3, 0x8E, 0x02, 0x10, 0xA7, 0xA7, 0x3F, 0x43, 0x22, 0x2D, 0xC1, 0xAA, 0x2F, 0x3A, 0xDA, 0xE7, + 0xBD, 0x72, 0xD4, 0x86, 0xD6, 0x16, 0x22, 0x35, 0xE3, 0x2D, 0x4F, 0x05, 0xF3, 0xE6, 0x36, 0x16, + 0xB5, 0x98, 0x6D, 0x56, 0x65, 0x47, 0x66, 0x0F, 0x35, 0x93, 0xA2, 0xFE, 0xE0, 0x2F, 0x34, 0xAD, + 0xE9, 0x34, 0x05, 0x79, 0x4D, 0x8A, 0x10, 0xF1, 0xDA, 0xF3, 0xA7, 0xC8, 0xD7, 0x24, 0xEC, 0x29, + 0xD7, 0x7B, 0xDC, 0x39, 0xE5, 0xAC, 0x30, 0xE7, 0x3D, 0x8F, 0xC2, 0x33, 0x6A, 0x63, 0x53, 0x0A, + 0xD6, 0xF0, 0x45, 0xBA, 0x92, 0xFF, 0x31, 0xCC, 0x3F, 0x55, 0x6F, 0xE8, 0xC7, 0xF0, 0xFC, 0x9C, + 0xA2, 0xEF, 0x4B, 0x6C, 0xCF, 0x67, 0xD9, 0xAF, 0x7C, 0x1D, 0xB8, 0x39, 0xFB, 0x48, 0xC6, 0x0D, + 0x7D, 0x97, 0x73, 0xB9, 0x58, 0x18, 0x20, 0x51, 0x86, 0xF1, 0x70, 0xD6, 0x7E, 0x3B, 0xAA, 0xFB, + 0x2B, 0x0E, 0x9A, 0x99, 0x26, 0x58, 0x71, 0x8A, 0xE6, 0x69, 0xF3, 0x79, 0xDE, 0xDE, 0x74, 0xED, + 0x86, 0x4D, 0xA1, 0xFE, 0xDF, 0x89, 0x48, 0x98, 0xDF, 0xF9, 0x5D, 0x4B, 0x07, 0x1B, 0x23, 0x20, + 0x51, 0xC1, 0x79, 0xC2, 0x89, 0x70, 0x9D, 0xA6, 0x59, 0x32, 0xF4, 0xA6, 0xB4, 0x61, 0xBB, 0xB4, + 0x9E, 0xA4, 0xD7, 0x6B, 0x84, 0x73, 0x72, 0x03, 0x3F, 0x87, 0xE3, 0x17, 0x67, 0xC3, 0xF9, 0x9B, + 0xDA, 0x4C, 0xCB, 0x6A, 0x1C, 0xAC, 0x85, 0xF4, 0x93, 0xBE, 0x6A, 0x76, 0x6C, 0xB1, 0x0E, 0xDA, + 0x3C, 0x75, 0x71, 0x97, 0xE8, 0x22, 0x2B, 0xB0, 0x1F, 0x32, 0x89, 0x10, 0x19, 0x58, 0xF8, 0xF8, + 0xC2, 0x6D, 0x9B, 0x74, 0x07, 0xE5, 0x4F, 0x5F, 0x0C, 0xF0, 0x06, 0x48, 0x77, 0x58, 0xD5, 0x3E, + 0xD4, 0xD1, 0x58, 0xBD, 0x18, 0xE6, 0xCF, 0x22, 0xD7, 0x94, 0xA9, 0xD2, 0x20, 0xD5, 0x06, 0xE2, + 0x1B, 0x57, 0xF9, 0x0D, 0xA5, 0x02, 0x5C, 0x41, 0x8E, 0x0C, 0xBF, 0x1D, 0x78, 0xE3, 0x68, 0xA1, + 0x86, 0x36, 0xCE, 0x0E, 0xCB, 0x26, 0xBD, 0x48, 0x73, 0x2D, 0xA8, 0x9D, 0x2A, 0xA7, 0x40, 0x29, + 0xCA, 0xE7, 0xC7, 0xC4, 0x57, 0x8B, 0xAA, 0xE3, 0x8F, 0xC6, 0x54, 0x81, 0xB4, 0x1A, 0x04, 0x4F, + 0x6E, 0x22, 0x77, 0x9C, 0x5A, 0xDF, 0x13, 0xD0, 0x00, 0x00, 0x00, 0x00, 0xA0, 0x7C, 0xE1, 0xD4, + 0x00, 0x01, 0xC2, 0x03, 0x80, 0x43, 0x00, 0x00, 0x10, 0x94, 0x50, 0x47, 0x3E, 0x30, 0x0D, 0x8B, + 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: This uses the currently unimplemented arm64 filter. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_good_1_block_header_1) +{ + // "good-1-block_header-1.xz has both Compressed Size and Uncompressed + // Size in the Block Header. This has also four extra bytes of Header + // Padding." + Array<u8, 72> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x03, 0xC0, 0x11, 0x0D, + 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xDE, 0x39, 0xEB, 0x01, 0x00, 0x0C, 0x48, + 0x65, 0x6C, 0x6C, 0x6F, 0x0A, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, 0x00, 0x00, + 0x43, 0xA3, 0xA2, 0x15, 0x00, 0x01, 0x25, 0x0D, 0x71, 0x19, 0xC4, 0xB6, 0x90, 0x42, 0x99, 0x0D, + 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_hello_world.bytes()); +} + +TEST_CASE(xz_utils_good_1_block_header_2) +{ + // "good-1-block_header-2.xz has known Compressed Size." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x40, 0x11, 0x21, + 0x01, 0x08, 0x00, 0x00, 0x3A, 0x4C, 0x88, 0xE1, 0x01, 0x00, 0x0C, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, 0x00, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x21, 0x0D, 0x75, 0xDC, 0xA8, 0xD2, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_hello_world.bytes()); +} + +TEST_CASE(xz_utils_good_1_block_header_3) +{ + // "good-1-block_header-3.xz has known Uncompressed Size." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x80, 0x0D, 0x21, + 0x01, 0x08, 0x00, 0x00, 0x51, 0x11, 0x81, 0x59, 0x01, 0x00, 0x0C, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, 0x00, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x21, 0x0D, 0x75, 0xDC, 0xA8, 0xD2, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_hello_world.bytes()); +} + +TEST_CASE(xz_utils_good_1_check_crc32) +{ + // "good-1-check-crc32.xz has one Stream with one Block with two + // uncompressed LZMA2 chunks and CRC32 check." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_hello_world.bytes()); +} + +TEST_CASE(xz_utils_good_1_check_crc64) +{ + // "good-1-check-crc64.xz is like good-1-check-crc32.xz but with CRC64." + Array<u8, 72> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x04, 0xE6, 0xD6, 0xB4, 0x46, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0xEF, 0x2E, 0x88, 0x11, + 0x9D, 0x3F, 0x96, 0xCA, 0x00, 0x01, 0x28, 0x0D, 0x3C, 0x67, 0x6A, 0x03, 0x1F, 0xB6, 0xF3, 0x7D, + 0x01, 0x00, 0x00, 0x00, 0x00, 0x04, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_hello_world.bytes()); +} + +TEST_CASE(xz_utils_good_1_check_none) +{ + // "good-1-check-none.xz has one Stream with one Block with two + // uncompressed LZMA2 chunks and no integrity check." + Array<u8, 64> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x00, 0xFF, 0x12, 0xD9, 0x41, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, 0x01, 0x20, 0x0D, + 0x34, 0xED, 0xB3, 0xCB, 0x06, 0x72, 0x9E, 0x7A, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_hello_world.bytes()); +} + +TEST_CASE(xz_utils_good_1_check_sha256) +{ + // "good-1-check-sha256.xz is like good-1-check-crc32.xz but with + // SHA256." + Array<u8, 96> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x0A, 0xE1, 0xFB, 0x0C, 0xA1, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x8E, 0x59, 0x35, 0xE7, + 0xE1, 0x33, 0x68, 0xCD, 0x96, 0x88, 0xFE, 0x8F, 0x48, 0xA0, 0x95, 0x52, 0x93, 0x67, 0x6A, 0x02, + 0x15, 0x62, 0x58, 0x2C, 0x7E, 0x84, 0x8D, 0xAF, 0xE1, 0x3F, 0xB0, 0x46, 0x00, 0x01, 0x40, 0x0D, + 0x93, 0x86, 0x4E, 0xAE, 0x18, 0x9B, 0x4B, 0x9A, 0x01, 0x00, 0x00, 0x00, 0x00, 0x0A, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_hello_world.bytes()); +} + +// "good-1-delta-lzma2.tiff.xz is an image file that compresses +// better with Delta+LZMA2 than with plain LZMA2." +// This test has not been added due to it having a filesize of 50.1 KiB. + +TEST_CASE(xz_utils_good_1_empty_bcj_lzma2) +{ + // "good-1-empty-bcj-lzma2.xz has an empty Block that uses PowerPC BCJ + // and LZMA2." + Array<u8, 52> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x01, 0x05, 0x00, + 0x21, 0x01, 0x00, 0x00, 0x7F, 0xE0, 0xF1, 0xC8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x11, 0x00, 0x3B, 0x96, 0x5F, 0x73, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: This uses the currently unimplemented PowerPC branch/call/jump filter. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_good_1_lzma2_1) +{ + // "good-1-lzma2-1.xz has two LZMA2 chunks, of which the second sets + // new properties." + Array<u8, 424> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0xE0, 0x00, 0xE2, 0x00, 0xB6, 0x5D, 0x00, 0x26, + 0x1B, 0xCA, 0x46, 0x67, 0x5A, 0xF2, 0x77, 0xB8, 0x7D, 0x86, 0xD8, 0x41, 0xDB, 0x05, 0x35, 0xCD, + 0x83, 0xA5, 0x7C, 0x12, 0xA5, 0x05, 0xDB, 0x90, 0xBD, 0x2F, 0x14, 0xD3, 0x71, 0x72, 0x96, 0xA8, + 0x8A, 0x7D, 0x84, 0x56, 0x71, 0x8D, 0x6A, 0x22, 0x98, 0xAB, 0x9E, 0x3D, 0x90, 0x80, 0x2D, 0xC7, + 0x5E, 0x0C, 0x12, 0x52, 0xD3, 0x3F, 0x07, 0x08, 0x7B, 0x1C, 0xA4, 0x77, 0xF3, 0x13, 0xB8, 0x17, + 0xC0, 0xEE, 0x91, 0x81, 0x39, 0xB3, 0x87, 0xF0, 0xFF, 0x00, 0xB3, 0x6A, 0x52, 0x41, 0xED, 0x2E, + 0xB0, 0xF2, 0x64, 0x97, 0xA4, 0x9A, 0x9E, 0x63, 0xA1, 0xAE, 0x19, 0x74, 0x0D, 0xA9, 0xD5, 0x5B, + 0x6C, 0xEE, 0xB1, 0xE0, 0x2C, 0xDC, 0x61, 0xDC, 0xCB, 0x9D, 0x86, 0xCF, 0xE1, 0xDC, 0x0A, 0x7A, + 0x81, 0x14, 0x5F, 0xD0, 0x40, 0xC8, 0x7E, 0x0D, 0x97, 0x44, 0xCE, 0xB5, 0xC2, 0xFC, 0x2C, 0x59, + 0x08, 0xBF, 0x03, 0x80, 0xDC, 0xD7, 0x44, 0x8E, 0xB3, 0xD4, 0x2D, 0xDE, 0xE5, 0x16, 0x21, 0x6E, + 0x47, 0x82, 0xAC, 0x08, 0x59, 0xD8, 0xE4, 0x66, 0x29, 0x61, 0xD5, 0xD1, 0xFA, 0x49, 0x63, 0x90, + 0x11, 0x3E, 0x20, 0xD0, 0xA9, 0xE2, 0xD5, 0x14, 0x81, 0xD9, 0x23, 0xD0, 0x8F, 0x43, 0xAE, 0x45, + 0x55, 0x36, 0x69, 0xAA, 0x00, 0xC0, 0x00, 0xE5, 0x00, 0xAD, 0x0B, 0x00, 0x8C, 0xF1, 0x9D, 0x40, + 0x2B, 0xD0, 0x7D, 0x1D, 0x99, 0xEE, 0xE4, 0xDC, 0x63, 0x74, 0x64, 0x46, 0xA4, 0xA0, 0x4A, 0x64, + 0x65, 0xB2, 0xF6, 0x4E, 0xC1, 0xC8, 0x68, 0x9F, 0x27, 0x54, 0xAD, 0xBB, 0xA6, 0x34, 0x3C, 0x77, + 0xEC, 0x0F, 0x2E, 0x1B, 0x8E, 0x42, 0x27, 0xE5, 0x68, 0xBF, 0x60, 0xF4, 0x0B, 0x3A, 0xF0, 0x9B, + 0x31, 0xEB, 0xDF, 0x3F, 0xD8, 0xAF, 0xA5, 0x55, 0x92, 0x46, 0x05, 0x58, 0x22, 0x09, 0x8F, 0xA8, + 0x60, 0x08, 0x0B, 0xA3, 0xE9, 0x3E, 0xBC, 0xB4, 0x16, 0xDB, 0xC7, 0xA3, 0xA2, 0xC0, 0x16, 0xD5, + 0x14, 0xA7, 0x22, 0xE8, 0x2F, 0xE8, 0xB4, 0xD0, 0x77, 0x17, 0xC5, 0x8B, 0xE4, 0xF2, 0xBB, 0x6B, + 0xD6, 0xEF, 0x9A, 0x81, 0x34, 0x4E, 0x1D, 0xDC, 0xEC, 0x36, 0xE6, 0x44, 0x72, 0xBF, 0x29, 0xB5, + 0x3C, 0x05, 0x31, 0x60, 0x66, 0xBA, 0x2C, 0x03, 0x0F, 0xD6, 0x47, 0xC6, 0x7D, 0x85, 0xD4, 0xC5, + 0x5E, 0x4E, 0x57, 0x73, 0xC3, 0x41, 0x69, 0xBE, 0x0D, 0x8C, 0x9C, 0xB5, 0x15, 0xA9, 0xE7, 0xD2, + 0x78, 0x51, 0x4B, 0xD5, 0x29, 0xD0, 0xF9, 0x35, 0x1A, 0xC5, 0x5D, 0xF4, 0x8C, 0x7A, 0x70, 0xD5, + 0x5E, 0xA8, 0x31, 0x57, 0x80, 0xC8, 0xA5, 0xD8, 0xE0, 0x00, 0x00, 0x00, 0xFB, 0x47, 0x48, 0xDB, + 0x00, 0x01, 0x82, 0x03, 0xC9, 0x03, 0x00, 0x00, 0x0B, 0x04, 0x8E, 0xDE, 0x3E, 0x30, 0x0D, 0x8B, + 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_lorem_ipsum.bytes()); +} + +TEST_CASE(xz_utils_good_1_lzma2_2) +{ + // "good-1-lzma2-2.xz has two LZMA2 chunks, of which the second resets + // the state without specifying new properties." + Array<u8, 424> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0xE0, 0x00, 0xE2, 0x00, 0xB6, 0x5D, 0x00, 0x26, + 0x1B, 0xCA, 0x46, 0x67, 0x5A, 0xF2, 0x77, 0xB8, 0x7D, 0x86, 0xD8, 0x41, 0xDB, 0x05, 0x35, 0xCD, + 0x83, 0xA5, 0x7C, 0x12, 0xA5, 0x05, 0xDB, 0x90, 0xBD, 0x2F, 0x14, 0xD3, 0x71, 0x72, 0x96, 0xA8, + 0x8A, 0x7D, 0x84, 0x56, 0x71, 0x8D, 0x6A, 0x22, 0x98, 0xAB, 0x9E, 0x3D, 0x90, 0x80, 0x2D, 0xC7, + 0x5E, 0x0C, 0x12, 0x52, 0xD3, 0x3F, 0x07, 0x08, 0x7B, 0x1C, 0xA4, 0x77, 0xF3, 0x13, 0xB8, 0x17, + 0xC0, 0xEE, 0x91, 0x81, 0x39, 0xB3, 0x87, 0xF0, 0xFF, 0x00, 0xB3, 0x6A, 0x52, 0x41, 0xED, 0x2E, + 0xB0, 0xF2, 0x64, 0x97, 0xA4, 0x9A, 0x9E, 0x63, 0xA1, 0xAE, 0x19, 0x74, 0x0D, 0xA9, 0xD5, 0x5B, + 0x6C, 0xEE, 0xB1, 0xE0, 0x2C, 0xDC, 0x61, 0xDC, 0xCB, 0x9D, 0x86, 0xCF, 0xE1, 0xDC, 0x0A, 0x7A, + 0x81, 0x14, 0x5F, 0xD0, 0x40, 0xC8, 0x7E, 0x0D, 0x97, 0x44, 0xCE, 0xB5, 0xC2, 0xFC, 0x2C, 0x59, + 0x08, 0xBF, 0x03, 0x80, 0xDC, 0xD7, 0x44, 0x8E, 0xB3, 0xD4, 0x2D, 0xDE, 0xE5, 0x16, 0x21, 0x6E, + 0x47, 0x82, 0xAC, 0x08, 0x59, 0xD8, 0xE4, 0x66, 0x29, 0x61, 0xD5, 0xD1, 0xFA, 0x49, 0x63, 0x90, + 0x11, 0x3E, 0x20, 0xD0, 0xA9, 0xE2, 0xD5, 0x14, 0x81, 0xD9, 0x23, 0xD0, 0x8F, 0x43, 0xAE, 0x45, + 0x55, 0x36, 0x69, 0xAA, 0x00, 0xA0, 0x00, 0xE5, 0x00, 0xAF, 0x00, 0x8C, 0xF1, 0x9D, 0x40, 0x7D, + 0x82, 0x4F, 0x24, 0x72, 0x14, 0xF1, 0x9D, 0x84, 0xCB, 0x5A, 0x32, 0x6C, 0x97, 0x6A, 0x40, 0x83, + 0x8B, 0xF0, 0xAF, 0x31, 0xC2, 0xB4, 0x65, 0x6F, 0x89, 0xFD, 0xFB, 0xD8, 0x8B, 0x54, 0x41, 0x82, + 0x16, 0x54, 0x12, 0xD1, 0x4D, 0xD5, 0x86, 0xC5, 0xC0, 0x5A, 0xFA, 0x49, 0x63, 0x91, 0x11, 0xFE, + 0xFF, 0xF5, 0x8F, 0x14, 0x02, 0x85, 0x61, 0x79, 0x38, 0x4A, 0x4B, 0x4F, 0x41, 0x63, 0xF8, 0x87, + 0x2F, 0x2C, 0xE6, 0xE2, 0xE9, 0x31, 0x8F, 0x8B, 0x14, 0xD3, 0xA1, 0x7E, 0x81, 0xE8, 0x55, 0x02, + 0xEF, 0x21, 0x31, 0xA2, 0x7B, 0x05, 0xCC, 0x1F, 0xA4, 0x60, 0xE7, 0x81, 0xAA, 0xA7, 0xD9, 0x78, + 0x82, 0xE6, 0x18, 0xB2, 0xAB, 0x1C, 0xAA, 0x19, 0x2F, 0xC2, 0x87, 0x14, 0xC5, 0xD9, 0xCB, 0x3F, + 0xD0, 0x18, 0xA6, 0xCD, 0x2A, 0x4B, 0x5D, 0xA8, 0xC7, 0x5F, 0x01, 0x67, 0x28, 0x4C, 0x2C, 0xE4, + 0xCC, 0xD5, 0x52, 0x9E, 0x93, 0x02, 0x7E, 0x10, 0x5D, 0xF5, 0x03, 0xB1, 0x98, 0x2F, 0x26, 0xED, + 0x86, 0x7B, 0x56, 0x7F, 0x13, 0x79, 0x58, 0x8F, 0x44, 0x10, 0xD9, 0xD9, 0x0F, 0x96, 0xE9, 0x3B, + 0xBF, 0xB5, 0xB8, 0xDA, 0x2B, 0xE1, 0xD6, 0x81, 0xF1, 0xC9, 0x00, 0x00, 0xFB, 0x47, 0x48, 0xDB, + 0x00, 0x01, 0x83, 0x03, 0xC9, 0x03, 0x00, 0x00, 0xAE, 0xD7, 0xD2, 0x15, 0x3E, 0x30, 0x0D, 0x8B, + 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_lorem_ipsum.bytes()); +} + +TEST_CASE(xz_utils_good_1_lzma2_3) +{ + // "good-1-lzma2-3.xz has two LZMA2 chunks, of which the first is + // uncompressed and the second is LZMA. The first chunk resets dictionary + // and the second sets new properties." + Array<u8, 408> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x34, 0x4C, 0x6F, 0x72, 0x65, 0x6D, + 0x20, 0x69, 0x70, 0x73, 0x75, 0x6D, 0x20, 0x64, 0x6F, 0x6C, 0x6F, 0x72, 0x20, 0x73, 0x69, 0x74, + 0x20, 0x61, 0x6D, 0x65, 0x74, 0x2C, 0x20, 0x63, 0x6F, 0x6E, 0x73, 0x65, 0x63, 0x74, 0x65, 0x74, + 0x75, 0x72, 0x20, 0x61, 0x64, 0x69, 0x70, 0x69, 0x73, 0x69, 0x63, 0x69, 0x6E, 0x67, 0x20, 0x0A, + 0xC0, 0x01, 0x93, 0x01, 0x24, 0x5D, 0x00, 0x32, 0x9B, 0x09, 0x6C, 0x54, 0xD7, 0x2E, 0x95, 0x6C, + 0xF9, 0xF7, 0x37, 0xD5, 0x1C, 0xE2, 0x46, 0x02, 0x82, 0x75, 0xFB, 0x49, 0x76, 0x8D, 0x73, 0x53, + 0xB6, 0xFD, 0x6D, 0xDB, 0xCA, 0xDB, 0xD9, 0x44, 0x0B, 0xB1, 0x2E, 0xBE, 0x13, 0xB6, 0xBA, 0xA8, + 0xE2, 0xF3, 0xED, 0x75, 0x54, 0xDC, 0x41, 0x20, 0xCC, 0xBF, 0x36, 0x5B, 0x20, 0x99, 0x5D, 0x0F, + 0x21, 0xA1, 0x06, 0xA3, 0x96, 0x2D, 0xB7, 0x97, 0x9C, 0xF0, 0x7B, 0xFE, 0xE2, 0x12, 0x8C, 0x2D, + 0x51, 0xF0, 0xDB, 0x76, 0x77, 0x7D, 0xA4, 0x7B, 0xD3, 0x95, 0xE9, 0xFB, 0x05, 0xE6, 0xF5, 0x97, + 0x8F, 0x62, 0xE9, 0xDB, 0x30, 0xBB, 0xB4, 0x70, 0x3D, 0x16, 0x78, 0x03, 0x77, 0x3A, 0x8B, 0x7A, + 0xD5, 0xB8, 0xF8, 0x4A, 0x27, 0x25, 0xF5, 0x8E, 0xAA, 0x24, 0x14, 0xA6, 0x29, 0x28, 0x6B, 0x2F, + 0x73, 0xE0, 0xA1, 0x71, 0xB4, 0x7B, 0xA4, 0x80, 0x50, 0x40, 0xCA, 0xEF, 0xDB, 0xB4, 0x95, 0xFD, + 0xBB, 0xC1, 0x8C, 0x8E, 0x60, 0x97, 0xDB, 0xCB, 0x7F, 0x21, 0xED, 0xC0, 0x10, 0x71, 0x1A, 0x7D, + 0xCB, 0xCD, 0x09, 0xD0, 0xD9, 0xFF, 0x6D, 0x80, 0xC0, 0x67, 0x7D, 0x3F, 0xC6, 0x94, 0xCF, 0x5B, + 0xDD, 0x51, 0x11, 0xD1, 0xCB, 0xD4, 0x20, 0xD7, 0x2B, 0x84, 0x4E, 0xA8, 0x45, 0xBB, 0x42, 0x78, + 0x1A, 0x68, 0x40, 0x5F, 0x24, 0x5E, 0x89, 0x3A, 0x36, 0x7D, 0xDB, 0x98, 0x28, 0xCC, 0xF9, 0x83, + 0xEC, 0x32, 0x06, 0x31, 0x47, 0x47, 0x3B, 0x6C, 0x1C, 0xF4, 0x62, 0x34, 0x40, 0xB3, 0x28, 0xBB, + 0x54, 0x36, 0xDD, 0x7A, 0x0E, 0x1C, 0x36, 0x25, 0x38, 0x58, 0x06, 0xF8, 0x15, 0xA3, 0xCE, 0x18, + 0xC8, 0xFD, 0x96, 0x1E, 0x69, 0x29, 0x03, 0xC3, 0xBD, 0x27, 0xF3, 0xE7, 0x8F, 0xDB, 0x73, 0xB4, + 0x2B, 0x4F, 0x38, 0x58, 0x24, 0xBF, 0x83, 0x14, 0x39, 0x7E, 0x73, 0xEE, 0xFE, 0xCF, 0xCA, 0xBD, + 0xF3, 0x21, 0x6A, 0x28, 0x80, 0xC8, 0x8E, 0x5D, 0x81, 0xC7, 0xBC, 0x17, 0xD0, 0x2C, 0x93, 0xB5, + 0x08, 0x95, 0xBA, 0x0E, 0x92, 0x82, 0x66, 0xAE, 0xFF, 0xB8, 0x03, 0x00, 0xFB, 0x47, 0x48, 0xDB, + 0x00, 0x01, 0xF4, 0x02, 0xC9, 0x03, 0x00, 0x00, 0x67, 0xC3, 0x95, 0x3E, 0x3E, 0x30, 0x0D, 0x8B, + 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_lorem_ipsum.bytes()); +} + +TEST_CASE(xz_utils_good_1_lzma2_4) +{ + // "good-1-lzma2-4.xz has three LZMA2 chunks: First is LZMA, second is + // uncompressed with dictionary reset, and third is LZMA with new + // properties but without dictionary reset." + Array<u8, 464> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x04, 0xE6, 0xD6, 0xB4, 0x46, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0xE0, 0x00, 0xBB, 0x00, 0xA1, 0x5D, 0x00, 0x26, + 0x1B, 0xCA, 0x46, 0x67, 0x5A, 0xF2, 0x77, 0xB8, 0x7D, 0x86, 0xD8, 0x41, 0xDB, 0x05, 0x35, 0xCD, + 0x83, 0xA5, 0x7C, 0x12, 0xA5, 0x05, 0xDB, 0x90, 0xBD, 0x2F, 0x14, 0xD3, 0x71, 0x72, 0x96, 0xA8, + 0x8A, 0x7D, 0x84, 0x56, 0x71, 0x8D, 0x6A, 0x22, 0x98, 0xAB, 0x9E, 0x3D, 0x90, 0x80, 0x2D, 0xC7, + 0x5E, 0x0C, 0x12, 0x52, 0xD3, 0x3F, 0x07, 0x08, 0x7B, 0x1C, 0xA4, 0x77, 0xF3, 0x13, 0xB8, 0x17, + 0xC0, 0xEE, 0x91, 0x73, 0xCA, 0xBC, 0xCF, 0xEB, 0x34, 0x66, 0xAC, 0x48, 0x9B, 0x69, 0xD9, 0x93, + 0x07, 0xAE, 0xCE, 0x50, 0xAF, 0x68, 0x09, 0x2F, 0x5B, 0x88, 0x1F, 0xC2, 0x08, 0xA2, 0x2C, 0x58, + 0x45, 0xB0, 0xFF, 0x62, 0x09, 0xEB, 0xEE, 0xDB, 0x63, 0x4F, 0x6F, 0xE0, 0xF3, 0x1F, 0xCF, 0x12, + 0x37, 0x98, 0x96, 0x4E, 0xF6, 0xF2, 0xB2, 0xFB, 0x6E, 0xAF, 0x44, 0x02, 0xE2, 0x22, 0xDE, 0xD5, + 0xE6, 0x34, 0x97, 0x39, 0xA3, 0x45, 0x2F, 0xAE, 0x99, 0x2F, 0x79, 0x69, 0x8F, 0xE9, 0x37, 0x89, + 0x48, 0xFE, 0xCC, 0x7E, 0xEA, 0xA9, 0x28, 0xAD, 0xC3, 0xE6, 0xDC, 0xB9, 0xDA, 0xAA, 0x16, 0x7E, + 0x01, 0x00, 0x26, 0x6C, 0x61, 0x62, 0x6F, 0x72, 0x69, 0x73, 0x20, 0x6E, 0x69, 0x73, 0x69, 0x20, + 0x75, 0x74, 0x20, 0x61, 0x6C, 0x69, 0x71, 0x75, 0x69, 0x70, 0x20, 0x65, 0x78, 0x20, 0x65, 0x61, + 0x20, 0x63, 0x6F, 0x6D, 0x6D, 0x6F, 0x64, 0x6F, 0x20, 0x0A, 0xC0, 0x00, 0xE5, 0x00, 0xBD, 0x5D, + 0x00, 0x31, 0x9B, 0xCA, 0x19, 0xC5, 0x54, 0xEC, 0xB6, 0x54, 0xE7, 0xB1, 0x7D, 0xC4, 0x57, 0x9E, + 0x6C, 0x89, 0xAD, 0x4A, 0x6D, 0x16, 0xD8, 0x3C, 0x05, 0x94, 0x10, 0x16, 0x99, 0x38, 0x21, 0xA3, + 0xB9, 0xC5, 0x80, 0xFF, 0xFC, 0xEE, 0xD4, 0xD5, 0x3F, 0xDD, 0x8C, 0xD7, 0x3D, 0x8F, 0x76, 0xEC, + 0x88, 0xAA, 0x32, 0xAB, 0x65, 0xD4, 0x38, 0xEF, 0xF7, 0xF9, 0x8A, 0xBF, 0xF7, 0xF8, 0xA5, 0x56, + 0xD7, 0x6D, 0xD7, 0x3F, 0x85, 0x0B, 0x9E, 0x3F, 0xE2, 0x47, 0x68, 0x22, 0x08, 0x05, 0x35, 0xB8, + 0x41, 0x72, 0xF9, 0xDB, 0xBE, 0xB7, 0x8E, 0x86, 0xBF, 0x43, 0x4B, 0x8E, 0x0D, 0x43, 0x2F, 0x41, + 0x69, 0xDF, 0x61, 0x0C, 0xC4, 0xE8, 0x37, 0x08, 0x4A, 0xDE, 0xC2, 0x76, 0x16, 0xB8, 0x48, 0x4E, + 0x9E, 0xB9, 0x53, 0x50, 0x1F, 0x33, 0x83, 0xE8, 0x29, 0xA0, 0x67, 0xC8, 0x66, 0x3A, 0x7F, 0x22, + 0x12, 0x62, 0xFB, 0x47, 0xE4, 0xBC, 0xF4, 0x51, 0x0F, 0x15, 0x88, 0x49, 0xD8, 0xCA, 0x0B, 0x25, + 0x8B, 0x5E, 0xE8, 0xDA, 0xFD, 0x38, 0xC0, 0xCE, 0x4C, 0x73, 0x1B, 0xFF, 0xD0, 0x9B, 0xE8, 0x4C, + 0xB7, 0x13, 0xF8, 0x37, 0x99, 0xE2, 0xDA, 0x9C, 0x2F, 0xB5, 0xEA, 0xB8, 0xA5, 0x8D, 0xEA, 0x57, + 0x82, 0x9B, 0x25, 0xCA, 0xFB, 0xF6, 0x88, 0x0A, 0x9B, 0xDF, 0x41, 0x03, 0x6E, 0x00, 0x00, 0x00, + 0xB2, 0x07, 0x44, 0xE9, 0x17, 0x33, 0x4B, 0x84, 0x00, 0x01, 0xAB, 0x03, 0xC9, 0x03, 0x00, 0x00, + 0xF5, 0x50, 0x2D, 0xFE, 0xB1, 0xC4, 0x67, 0xFB, 0x02, 0x00, 0x00, 0x00, 0x00, 0x04, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_lorem_ipsum.bytes()); +} + +TEST_CASE(xz_utils_good_1_lzma2_5) +{ + // "good-1-lzma2-4.xz has three LZMA2 chunks: First is LZMA, second is + // uncompressed with dictionary reset, and third is LZMA with new + // properties but without dictionary reset." + Array<u8, 52> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x10, 0x00, 0x00, 0x00, 0xA8, 0x70, 0x8E, 0x86, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x11, 0x00, 0x3B, 0x96, 0x5F, 0x73, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.size(), 0ul); +} + +TEST_CASE(xz_utils_good_1_sparc_lzma2) +{ + // "good-1-sparc-lzma2.xz uses the SPARC filter and LZMA2. The + // uncompressed file is compress_prepared_bcj_sparc found from the tests + // directory." + Array<u8, 612> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x04, 0xE6, 0xD6, 0xB4, 0x46, 0x02, 0x01, 0x09, 0x00, + 0x21, 0x01, 0x08, 0x00, 0x0C, 0xAA, 0xEA, 0x77, 0xE0, 0x04, 0xD7, 0x02, 0x22, 0x5D, 0x00, 0x3F, + 0x91, 0x45, 0x84, 0x68, 0x34, 0x8A, 0x09, 0x0A, 0x41, 0x50, 0x57, 0x98, 0xF3, 0xBD, 0x43, 0xCD, + 0x26, 0xE9, 0xC6, 0xC9, 0xED, 0x84, 0x68, 0x5E, 0xA7, 0xDD, 0xE8, 0xA0, 0xA8, 0x77, 0x31, 0xD2, + 0xA0, 0x05, 0xC6, 0x90, 0x2C, 0x60, 0xDB, 0x04, 0x0C, 0x2E, 0xCC, 0xED, 0x09, 0x92, 0xC5, 0x8B, + 0xA2, 0x23, 0x64, 0x7D, 0x17, 0xF8, 0xE1, 0xC7, 0x24, 0x0B, 0xC2, 0x2A, 0xDB, 0x03, 0x4F, 0x3C, + 0x4E, 0xBC, 0x89, 0x17, 0xD7, 0xAF, 0x79, 0x88, 0x85, 0x36, 0x8C, 0x6E, 0xD5, 0x3C, 0x34, 0x6A, + 0x29, 0xA0, 0x45, 0x27, 0x85, 0x43, 0x52, 0xAF, 0x51, 0x9E, 0x4B, 0x5E, 0x9E, 0x34, 0xC1, 0xFF, + 0x8E, 0xC1, 0xBD, 0xE1, 0x0C, 0xD6, 0x21, 0x50, 0x5E, 0x14, 0x3B, 0x29, 0x54, 0x65, 0x28, 0x90, + 0x72, 0x4E, 0x2D, 0x65, 0x51, 0x35, 0x90, 0x25, 0x76, 0xB7, 0x61, 0x8A, 0x9F, 0xF0, 0x14, 0x75, + 0x39, 0xAA, 0xAE, 0x75, 0x17, 0xAB, 0x29, 0xDB, 0x36, 0xF6, 0xAE, 0xC6, 0x02, 0x3A, 0x3A, 0x93, + 0x05, 0x6C, 0x85, 0xA3, 0x8E, 0x55, 0xF0, 0x06, 0xC3, 0x37, 0x36, 0x90, 0xBB, 0x9B, 0x9C, 0x31, + 0x01, 0x6B, 0xDC, 0x9E, 0xFA, 0x6F, 0x2E, 0xF8, 0xA1, 0xC4, 0xCA, 0x6E, 0x27, 0x7C, 0x74, 0x1F, + 0x28, 0xE8, 0x7A, 0x76, 0x3F, 0xC3, 0x92, 0x24, 0x21, 0x8E, 0xD3, 0x0B, 0xC2, 0x13, 0xF5, 0x12, + 0xCE, 0x3B, 0x1A, 0x19, 0x57, 0x95, 0xFA, 0x9D, 0x3F, 0xDE, 0x16, 0xD2, 0x78, 0x10, 0x01, 0x1A, + 0x42, 0x11, 0xD9, 0x7B, 0xC0, 0x8E, 0x2C, 0x78, 0x9F, 0xCB, 0x43, 0xAF, 0xEE, 0x56, 0xA3, 0xAE, + 0x03, 0x70, 0xB7, 0x13, 0xB3, 0xE5, 0x31, 0xDB, 0x63, 0xDA, 0x65, 0xFA, 0x1F, 0xB6, 0x74, 0xE1, + 0xF7, 0xC4, 0x93, 0xA5, 0x03, 0xB7, 0xFC, 0x93, 0x31, 0x39, 0xA1, 0xFB, 0x82, 0xED, 0x6F, 0xC0, + 0xC2, 0xDA, 0xDF, 0x5D, 0x45, 0x54, 0x00, 0x5F, 0x4E, 0x35, 0xB0, 0xDE, 0xEE, 0x47, 0x37, 0x0A, + 0x66, 0x1C, 0x3C, 0x69, 0xEF, 0xD1, 0x7D, 0x39, 0x75, 0x45, 0xC4, 0x49, 0x5A, 0x86, 0xA2, 0x7E, + 0x45, 0xB9, 0x8E, 0x39, 0x1D, 0x47, 0xA0, 0x5B, 0x3A, 0xD8, 0x24, 0x97, 0xE8, 0x17, 0x80, 0x81, + 0xCD, 0xE6, 0xC8, 0x42, 0x47, 0x65, 0x50, 0x33, 0xE4, 0x6B, 0x99, 0xA7, 0xA4, 0x33, 0x0D, 0xC3, + 0x0E, 0x8E, 0x18, 0xEE, 0x06, 0x85, 0xD1, 0xD3, 0xCF, 0x6E, 0xCB, 0x8F, 0x67, 0x07, 0x84, 0x08, + 0xF3, 0xBB, 0xA1, 0x48, 0xDE, 0x81, 0x79, 0xBA, 0xFA, 0x1B, 0x36, 0x3E, 0xFA, 0x7E, 0x53, 0xB7, + 0xDD, 0x9C, 0xF0, 0xB6, 0x57, 0x93, 0x8E, 0x31, 0xAF, 0x52, 0xEC, 0xD6, 0x1F, 0x42, 0xC6, 0x77, + 0x5C, 0x23, 0x8A, 0x2C, 0xAF, 0xDF, 0x18, 0x9A, 0xAB, 0x63, 0x9E, 0x30, 0x32, 0xF1, 0xD1, 0x22, + 0x7F, 0xAE, 0xF1, 0x5A, 0xCD, 0xEC, 0x15, 0x55, 0x1D, 0x31, 0xB1, 0x7A, 0x59, 0x72, 0xF8, 0x38, + 0x9E, 0xE2, 0x50, 0x24, 0x2E, 0x98, 0x83, 0x67, 0x9C, 0xF0, 0xB6, 0x5F, 0x1B, 0x4F, 0x04, 0xA8, + 0x83, 0xF6, 0x87, 0x64, 0x5B, 0x2E, 0xB7, 0xC5, 0x16, 0x66, 0xDF, 0xA1, 0xE5, 0xD0, 0x89, 0x53, + 0xEA, 0x46, 0x2C, 0xB8, 0x2A, 0xBE, 0x71, 0x16, 0x93, 0x41, 0x20, 0x68, 0x68, 0x0A, 0x61, 0x39, + 0x4A, 0xD4, 0xB7, 0x28, 0x37, 0x06, 0x7D, 0x18, 0x83, 0x30, 0x7E, 0xD7, 0x6C, 0x1E, 0xA6, 0xD5, + 0xE5, 0x40, 0xC0, 0x96, 0xAC, 0x8A, 0xCB, 0x6E, 0xCD, 0x63, 0x76, 0xDC, 0xCC, 0x94, 0x25, 0x80, + 0x34, 0xC2, 0xDB, 0x5E, 0x78, 0x76, 0x6F, 0x10, 0xEE, 0x66, 0x5D, 0x85, 0x4F, 0x1E, 0x83, 0x62, + 0x70, 0x72, 0x6F, 0x88, 0x9B, 0xF7, 0xF3, 0x60, 0xE0, 0xA0, 0xD3, 0xF4, 0x22, 0xE9, 0xEF, 0xD1, + 0x22, 0xA8, 0x83, 0x09, 0x9B, 0x13, 0x53, 0xAC, 0x12, 0xEA, 0x63, 0xCE, 0xC8, 0xA8, 0x3A, 0x4F, + 0xF1, 0xC9, 0x58, 0xDA, 0x69, 0x02, 0xAF, 0x65, 0x7C, 0x57, 0xF2, 0x62, 0xEE, 0x7F, 0x71, 0x56, + 0x00, 0x00, 0x00, 0x00, 0xF7, 0xBD, 0x07, 0x0A, 0x2D, 0x3A, 0x72, 0xFA, 0x00, 0x01, 0xBE, 0x04, + 0xD8, 0x09, 0x00, 0x00, 0xE1, 0xAA, 0x24, 0xFA, 0xB1, 0xC4, 0x67, 0xFB, 0x02, 0x00, 0x00, 0x00, + 0x00, 0x04, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: This uses the currently unimplemented SPARC branch/call/jump filter. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_good_1_x86_lzma2) +{ + // "good-1-x86-lzma2.xz uses the x86 filter (BCJ) and LZMA2. The + // uncompressed file is compress_prepared_bcj_x86 found from the tests + // directory." + Array<u8, 716> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x04, 0xE6, 0xD6, 0xB4, 0x46, 0x02, 0x01, 0x04, 0x00, + 0x21, 0x01, 0x08, 0x00, 0xD2, 0xB9, 0x74, 0xCB, 0xE0, 0x05, 0x6B, 0x02, 0x8A, 0x5D, 0x00, 0x3F, + 0x91, 0x45, 0x84, 0x68, 0x3B, 0xDE, 0xDE, 0xA8, 0x4B, 0x03, 0xD8, 0x35, 0x53, 0xA4, 0x91, 0x73, + 0xA3, 0xE5, 0x1B, 0x1E, 0x5B, 0x1D, 0x4A, 0xF1, 0x06, 0xC1, 0xAE, 0x79, 0xEA, 0x45, 0x62, 0x76, + 0x0C, 0x29, 0xCD, 0x4B, 0x9F, 0x6E, 0xCD, 0x71, 0xB9, 0x15, 0xF0, 0x80, 0x58, 0xDE, 0x71, 0xF6, + 0x38, 0x55, 0x95, 0xD1, 0xFB, 0x03, 0xF0, 0xA9, 0x04, 0x71, 0x86, 0xC5, 0xD6, 0x4B, 0xB7, 0x0F, + 0xCE, 0x3C, 0x29, 0xA7, 0x05, 0x65, 0x35, 0xCF, 0x9D, 0xFF, 0x7A, 0x18, 0xCD, 0x09, 0x8B, 0xDD, + 0xAA, 0x4E, 0xEB, 0xE8, 0x21, 0xF4, 0x3D, 0xDF, 0x57, 0x4F, 0xF6, 0x62, 0x96, 0x34, 0x36, 0x9C, + 0xCB, 0x20, 0x48, 0x9F, 0x20, 0xEC, 0x87, 0xEE, 0x19, 0x4E, 0xCB, 0x01, 0x82, 0x21, 0x08, 0x75, + 0xBB, 0x09, 0x4D, 0x83, 0xCB, 0xC4, 0x10, 0xC1, 0xDF, 0x6F, 0xE6, 0x6E, 0x29, 0x9A, 0x51, 0x84, + 0x0B, 0x67, 0x34, 0x54, 0x4C, 0x0B, 0xDD, 0x5F, 0xBA, 0xE8, 0xBB, 0x23, 0x9E, 0x3E, 0x50, 0x3B, + 0x34, 0x82, 0x66, 0x06, 0xDB, 0x21, 0x6A, 0x62, 0x5B, 0x5F, 0x10, 0xB6, 0x7A, 0x70, 0x85, 0xB4, + 0x3E, 0x7E, 0x6D, 0x25, 0x7B, 0x7D, 0x48, 0x59, 0xCA, 0x94, 0xE9, 0xDB, 0xB6, 0x60, 0xE5, 0x89, + 0x24, 0xBE, 0xC6, 0x32, 0xC5, 0x18, 0xF1, 0x56, 0x2F, 0x1F, 0x24, 0x30, 0xB7, 0x62, 0x0C, 0x4B, + 0x98, 0xF5, 0x5A, 0xE7, 0xF8, 0x7A, 0x1E, 0x4A, 0x44, 0xC6, 0x14, 0x6E, 0x87, 0xD8, 0xCE, 0xE5, + 0x0E, 0x33, 0x8B, 0x14, 0x6D, 0xD2, 0xD0, 0xF6, 0xD6, 0xAB, 0x68, 0x4B, 0xC8, 0x75, 0xE4, 0x95, + 0xE7, 0x03, 0x69, 0x89, 0x3F, 0xB0, 0x07, 0xC0, 0x59, 0x4F, 0xEA, 0x26, 0x85, 0x36, 0x7A, 0x87, + 0xC3, 0x87, 0x74, 0x0A, 0xB1, 0x77, 0xE5, 0x3F, 0xAD, 0xB1, 0xFF, 0x3B, 0xAC, 0xA4, 0x3D, 0x7C, + 0xAC, 0xF7, 0xA6, 0xC5, 0xBC, 0xFE, 0x33, 0xF4, 0xB0, 0x26, 0xAF, 0xF1, 0x00, 0x57, 0xC8, 0x5F, + 0x5A, 0xF5, 0xD6, 0xA7, 0x59, 0x4F, 0xA6, 0x5A, 0x3D, 0x69, 0xB1, 0xC1, 0x80, 0x39, 0x1B, 0x67, + 0x86, 0x5E, 0xED, 0x78, 0x37, 0x06, 0x45, 0x0E, 0x85, 0xF3, 0x11, 0xC2, 0x71, 0x00, 0x92, 0xA4, + 0x66, 0x1B, 0x1C, 0xDC, 0x6F, 0xC5, 0x58, 0xA7, 0xED, 0x8C, 0x6F, 0xCD, 0x4D, 0x97, 0xAE, 0xE6, + 0xBE, 0x52, 0x5E, 0x9C, 0x5F, 0x1A, 0xDE, 0x06, 0x23, 0xDA, 0x1E, 0x06, 0x8D, 0x76, 0x6B, 0x33, + 0x06, 0x6B, 0xEC, 0xA4, 0x34, 0xFD, 0xD0, 0xF6, 0x72, 0xCC, 0x05, 0x09, 0xDB, 0xD1, 0xDE, 0x06, + 0xA4, 0xE4, 0x18, 0x34, 0xF3, 0x51, 0x2F, 0x5C, 0x98, 0x55, 0xAB, 0xCD, 0x08, 0x7B, 0x2F, 0x80, + 0x9E, 0x8D, 0x49, 0xD9, 0xB7, 0xB8, 0x35, 0x94, 0xB5, 0xEC, 0x16, 0xAD, 0x3B, 0x1B, 0x7E, 0x9A, + 0x2D, 0xA5, 0x84, 0x8C, 0xFC, 0xB3, 0x4D, 0x3F, 0x06, 0x53, 0x90, 0x7D, 0x53, 0x3E, 0x18, 0xD1, + 0x65, 0xB0, 0x91, 0x93, 0x97, 0x57, 0x7C, 0x9E, 0xD3, 0xAE, 0xA9, 0x6D, 0x52, 0xD8, 0xCF, 0xE8, + 0x7C, 0xF2, 0xC5, 0xB3, 0x9C, 0xF7, 0xFF, 0x55, 0xEF, 0x1B, 0x90, 0x5A, 0xE1, 0x03, 0xC2, 0x20, + 0x87, 0x8C, 0x8E, 0xF1, 0x00, 0x7A, 0x0A, 0x46, 0xE2, 0x72, 0xA5, 0x27, 0xC0, 0x6F, 0x87, 0xCE, + 0x37, 0xBB, 0x3A, 0x5D, 0xD3, 0x9C, 0x4F, 0x71, 0x7C, 0xD3, 0xCE, 0xB1, 0xE3, 0xD3, 0x6E, 0x23, + 0x67, 0x8D, 0xDB, 0xF6, 0x04, 0x66, 0xAA, 0x70, 0x5D, 0x73, 0xD0, 0x91, 0x22, 0x5A, 0xF9, 0xB4, + 0x86, 0x2A, 0xA1, 0x1C, 0x04, 0xAE, 0xC5, 0xE5, 0x14, 0x05, 0x11, 0xF3, 0xCD, 0xBC, 0xFF, 0x4E, + 0x15, 0x9F, 0x82, 0x51, 0x61, 0x1C, 0x6B, 0xBC, 0xAE, 0x79, 0x16, 0x38, 0x88, 0x2C, 0x96, 0x86, + 0x98, 0x1D, 0xE4, 0x5B, 0x11, 0x3A, 0x31, 0x57, 0x1C, 0xE6, 0x96, 0xE8, 0xBB, 0xA1, 0x0A, 0xA3, + 0xA4, 0xA9, 0xA0, 0x98, 0x33, 0x8C, 0xBD, 0x22, 0x38, 0x4D, 0x82, 0xA7, 0xBD, 0x81, 0x10, 0x75, + 0x48, 0xF8, 0x85, 0x8A, 0xA7, 0xA0, 0x48, 0xF5, 0xA6, 0x0A, 0xF3, 0xB0, 0x5F, 0xEF, 0x51, 0x95, + 0x68, 0x06, 0xEC, 0x08, 0x1A, 0xF6, 0xAB, 0xA5, 0x60, 0xC1, 0x25, 0x96, 0xD8, 0xD0, 0x39, 0x62, + 0x08, 0xD8, 0xAD, 0x6E, 0x35, 0xD7, 0xC3, 0x34, 0x30, 0x6F, 0x54, 0x47, 0x8E, 0x9C, 0xE8, 0xF8, + 0xEE, 0x3E, 0x1F, 0xF2, 0x04, 0xEB, 0xA3, 0xD8, 0x58, 0x85, 0xE2, 0x75, 0x88, 0x0E, 0x14, 0xDA, + 0x9F, 0x66, 0x60, 0x7C, 0x9A, 0xF3, 0x70, 0x27, 0xA2, 0xAC, 0xC6, 0x9C, 0x0A, 0xE1, 0xAF, 0x9B, + 0xB2, 0x70, 0x9E, 0x6D, 0x27, 0x17, 0x3C, 0x59, 0x96, 0x20, 0x4E, 0xBC, 0x02, 0xDF, 0x7B, 0x31, + 0xD1, 0x0F, 0x96, 0x8E, 0x5A, 0xF9, 0xE5, 0x84, 0xA7, 0x00, 0x00, 0x00, 0xCC, 0xFE, 0xAF, 0xFF, + 0x32, 0x1D, 0x43, 0xB0, 0x00, 0x01, 0xA6, 0x05, 0xEC, 0x0A, 0x00, 0x00, 0x08, 0xD2, 0xCE, 0x55, + 0xB1, 0xC4, 0x67, 0xFB, 0x02, 0x00, 0x00, 0x00, 0x00, 0x04, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + // TODO: This uses the currently unimplemented x86 branch/call/jump filter. + (void)decompressor->read_until_eof(PAGE_SIZE); +} + +TEST_CASE(xz_utils_good_2_lzma2) +{ + // "good-2-lzma2.xz has one Stream with two Blocks with one uncompressed + // LZMA2 chunk in each Block." + Array<u8, 92> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x00, 0x00, 0x00, 0x16, 0x35, 0x96, 0x31, 0x02, 0x00, 0x21, 0x01, 0x08, 0x00, 0x00, 0x00, + 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x00, + 0xDD, 0xD1, 0xCA, 0x53, 0x00, 0x02, 0x1A, 0x06, 0x1B, 0x07, 0x00, 0x00, 0x06, 0xDC, 0xE7, 0x5D, + 0x3E, 0x30, 0x0D, 0x8B, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + auto buffer = MUST(decompressor->read_until_eof(PAGE_SIZE)); + EXPECT_EQ(buffer.span(), xz_utils_hello_world.bytes()); +} + +// The following test files are designated as "unsupported", which usually means that they test indicators +// for not-yet-specified features or where they test files that are not explicitly wrong but that would fail +// in the reference implementation due to self-imposed limits (i.e. filter ordering restrictions). + +TEST_CASE(xz_utils_unsupported_block_header) +{ + // "unsupported-block_header.xz has a non-null byte in Header Padding, + // which may indicate presence of a new unsupported field." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x01, 0x4E, 0x3F, 0x24, 0x64, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + + // 3.1.6. Header Padding: + // "If any of the bytes are not null bytes, the decoder MUST + // indicate an error. It is possible that there is a new field + // present which the decoder is not aware of, and can thus parse + // the Block Header incorrectly." + // We test for failure in accordance with the specification. + // In our in-tree setup of tests and implementation, changing this down the line is trivial. + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_unsupported_check) +{ + // "unsupported-check.xz uses Check ID 0x02 which isn't supported by + // the current version of the file format." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x02, 0xD3, 0x73, 0xD7, 0xAF, 0x02, 0x00, 0x21, 0x01, + 0x08, 0x00, 0x00, 0x00, 0xD8, 0x0F, 0x23, 0x13, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x2A, 0x13, 0x90, 0x94, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x02, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + + // 2.1.1.2. Stream Flags: + // "If an unsupported Check is used, the decoder SHOULD + // indicate a warning or error." + // We are throwing errors for unknown check IDs, so let's check for that. + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_unsupported_filter_flags_1) +{ + // "unsupported-filter_flags-1.xz has unsupported Filter ID 0x7F." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x7F, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x67, 0x73, 0xDD, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + + // Behavior for unknown filter IDs is not specified at all, but we are throwing errors, so let's test for that. + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_unsupported_filter_flags_2) +{ + // "unsupported-filter_flags-2.xz specifies only Delta filter in the + // List of Filter Flags, but Delta isn't allowed as the last filter in + // the chain. It could be a little more correct to detect this file as + // corrupt instead of unsupported, but saying it is unsupported is + // simpler in case of liblzma." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x00, 0x03, 0x01, + 0xFF, 0x00, 0x00, 0x00, 0xFB, 0x85, 0xF6, 0x42, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + + // TODO: The delta filter is currently unimplemented. However, once it is implemented, we likely want to mirror the recommended behavior of the specification anyways. + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} + +TEST_CASE(xz_utils_unsupported_filter_flags_3) +{ + // "unsupported-filter_flags-3.xz specifies two LZMA2 filters in the + // List of Filter Flags. LZMA2 is allowed only as the last filter in the + // chain. It could be a little more correct to detect this file as + // corrupt instead of unsupported, but saying it is unsupported is + // simpler in case of liblzma." + Array<u8, 68> const compressed { + 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01, 0x69, 0x22, 0xDE, 0x36, 0x02, 0x01, 0x21, 0x01, + 0x08, 0x21, 0x01, 0x08, 0xC8, 0x91, 0x1B, 0x9B, 0x01, 0x00, 0x05, 0x48, 0x65, 0x6C, 0x6C, 0x6F, + 0x0A, 0x02, 0x00, 0x06, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x0A, 0x00, 0x43, 0xA3, 0xA2, 0x15, + 0x00, 0x01, 0x24, 0x0D, 0x30, 0x28, 0xDF, 0xAF, 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x01, 0x59, 0x5A + }; + + auto stream = MUST(try_make<FixedMemoryStream>(compressed)); + auto decompressor = MUST(Compress::XzDecompressor::create(move(stream))); + + // Similar to the recommended behavior of the specification, we reject LZMA2 filters if they aren't the last one. + auto buffer_or_error = decompressor->read_until_eof(PAGE_SIZE); + EXPECT(buffer_or_error.is_error()); +} |