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node/deps/zlib/contrib/tests/utils_unittest.cc

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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the Chromium source repository LICENSE file.
#include "infcover.h"
#include <cstddef>
#include <vector>
#include "base/files/file_path.h"
#include "base/files/scoped_temp_dir.h"
#include "compression_utils_portable.h"
#include "gtest.h"
#include "third_party/zlib/contrib/minizip/unzip.h"
#include "third_party/zlib/contrib/minizip/zip.h"
#include "zlib.h"
void TestPayloads(size_t input_size, zlib_internal::WrapperType type) {
std::vector<unsigned char> input;
input.reserve(input_size);
for (size_t i = 1; i <= input_size; ++i)
input.push_back(i & 0xff);
// If it is big enough for GZIP, will work for other wrappers.
std::vector<unsigned char> compressed(
zlib_internal::GzipExpectedCompressedSize(input.size()));
std::vector<unsigned char> decompressed(input.size());
// Libcores's java/util/zip/Deflater default settings: ZLIB,
// DEFAULT_COMPRESSION and DEFAULT_STRATEGY.
unsigned long compressed_size = static_cast<unsigned long>(compressed.size());
int result = zlib_internal::CompressHelper(
type, compressed.data(), &compressed_size, input.data(), input.size(),
Z_DEFAULT_COMPRESSION, nullptr, nullptr);
ASSERT_EQ(result, Z_OK);
unsigned long decompressed_size =
static_cast<unsigned long>(decompressed.size());
result = zlib_internal::UncompressHelper(type, decompressed.data(),
&decompressed_size,
compressed.data(), compressed_size);
ASSERT_EQ(result, Z_OK);
EXPECT_EQ(input, decompressed);
}
TEST(ZlibTest, ZlibWrapper) {
// Minimal ZLIB wrapped short stream size is about 8 bytes.
for (size_t i = 1; i < 1024; ++i)
TestPayloads(i, zlib_internal::WrapperType::ZLIB);
}
TEST(ZlibTest, GzipWrapper) {
// GZIP should be 12 bytes bigger than ZLIB wrapper.
for (size_t i = 1; i < 1024; ++i)
TestPayloads(i, zlib_internal::WrapperType::GZIP);
}
TEST(ZlibTest, RawWrapper) {
// RAW has no wrapper (V8 Blobs is a known user), size
// should be payload_size + 2 for short payloads.
for (size_t i = 1; i < 1024; ++i)
TestPayloads(i, zlib_internal::WrapperType::ZRAW);
}
TEST(ZlibTest, InflateCover) {
cover_support();
cover_wrap();
cover_back();
cover_inflate();
// TODO(cavalcantii): enable this last test.
// cover_trees();
cover_fast();
}
TEST(ZlibTest, InflateCVE) {
cover_CVE_2022_37434();
}
TEST(ZlibTest, DeflateStored) {
const int no_compression = 0;
const zlib_internal::WrapperType type = zlib_internal::WrapperType::GZIP;
std::vector<unsigned char> input(1 << 10, 42);
std::vector<unsigned char> compressed(
zlib_internal::GzipExpectedCompressedSize(input.size()));
std::vector<unsigned char> decompressed(input.size());
unsigned long compressed_size = static_cast<unsigned long>(compressed.size());
int result = zlib_internal::CompressHelper(
type, compressed.data(), &compressed_size, input.data(), input.size(),
no_compression, nullptr, nullptr);
ASSERT_EQ(result, Z_OK);
unsigned long decompressed_size =
static_cast<unsigned long>(decompressed.size());
result = zlib_internal::UncompressHelper(type, decompressed.data(),
&decompressed_size,
compressed.data(), compressed_size);
ASSERT_EQ(result, Z_OK);
EXPECT_EQ(input, decompressed);
}
TEST(ZlibTest, StreamingInflate) {
uint8_t comp_buf[4096], decomp_buf[4096];
z_stream comp_strm, decomp_strm;
int ret;
std::vector<uint8_t> src;
for (size_t i = 0; i < 1000; i++) {
for (size_t j = 0; j < 40; j++) {
src.push_back(j);
}
}
// Deflate src into comp_buf.
comp_strm.zalloc = Z_NULL;
comp_strm.zfree = Z_NULL;
comp_strm.opaque = Z_NULL;
ret = deflateInit(&comp_strm, Z_BEST_COMPRESSION);
ASSERT_EQ(ret, Z_OK);
comp_strm.next_out = comp_buf;
comp_strm.avail_out = sizeof(comp_buf);
comp_strm.next_in = src.data();
comp_strm.avail_in = src.size();
ret = deflate(&comp_strm, Z_FINISH);
ASSERT_EQ(ret, Z_STREAM_END);
size_t comp_sz = sizeof(comp_buf) - comp_strm.avail_out;
// Inflate comp_buf one 4096-byte buffer at a time.
decomp_strm.zalloc = Z_NULL;
decomp_strm.zfree = Z_NULL;
decomp_strm.opaque = Z_NULL;
ret = inflateInit(&decomp_strm);
ASSERT_EQ(ret, Z_OK);
decomp_strm.next_in = comp_buf;
decomp_strm.avail_in = comp_sz;
while (decomp_strm.avail_in > 0) {
decomp_strm.next_out = decomp_buf;
decomp_strm.avail_out = sizeof(decomp_buf);
ret = inflate(&decomp_strm, Z_FINISH);
ASSERT_TRUE(ret == Z_OK || ret == Z_STREAM_END || ret == Z_BUF_ERROR);
// Verify the output bytes.
size_t num_out = sizeof(decomp_buf) - decomp_strm.avail_out;
for (size_t i = 0; i < num_out; i++) {
EXPECT_EQ(decomp_buf[i], src[decomp_strm.total_out - num_out + i]);
}
}
// Cleanup memory (i.e. makes ASAN bot happy).
ret = deflateEnd(&comp_strm);
EXPECT_EQ(ret, Z_OK);
ret = inflateEnd(&decomp_strm);
EXPECT_EQ(ret, Z_OK);
}
TEST(ZlibTest, CRCHashBitsCollision) {
// The CRC32c of the hex sequences 2a,14,14,14 and 2a,14,db,14 have the same
// lower 9 bits. Since longest_match doesn't check match[2], a bad match could
// be chosen when the number of hash bits is <= 9. For this reason, the number
// of hash bits must be set higher, regardless of the memlevel parameter, when
// using CRC32c hashing for string matching. See https://crbug.com/1113596
std::vector<uint8_t> src = {
// Random byte; zlib doesn't match at offset 0.
123,
// This will look like 5-byte match.
0x2a,
0x14,
0xdb,
0x14,
0x15,
// Offer a 4-byte match to bump the next expected match length to 5.
0x2a,
0x14,
0x14,
0x14,
0x2a,
0x14,
0x14,
0x14,
0x15,
};
z_stream stream;
stream.zalloc = nullptr;
stream.zfree = nullptr;
// Using a low memlevel to try to reduce the number of hash bits. Negative
// windowbits means raw deflate, i.e. without the zlib header.
int ret = deflateInit2(&stream, /*comp level*/ 2, /*method*/ Z_DEFLATED,
/*windowbits*/ -15, /*memlevel*/ 2,
/*strategy*/ Z_DEFAULT_STRATEGY);
ASSERT_EQ(ret, Z_OK);
std::vector<uint8_t> compressed(100, '\0');
stream.next_out = compressed.data();
stream.avail_out = compressed.size();
stream.next_in = src.data();
stream.avail_in = src.size();
ret = deflate(&stream, Z_FINISH);
ASSERT_EQ(ret, Z_STREAM_END);
compressed.resize(compressed.size() - stream.avail_out);
deflateEnd(&stream);
ret = inflateInit2(&stream, /*windowbits*/ -15);
ASSERT_EQ(ret, Z_OK);
std::vector<uint8_t> decompressed(src.size(), '\0');
stream.next_in = compressed.data();
stream.avail_in = compressed.size();
stream.next_out = decompressed.data();
stream.avail_out = decompressed.size();
ret = inflate(&stream, Z_FINISH);
ASSERT_EQ(ret, Z_STREAM_END);
EXPECT_EQ(0U, stream.avail_out);
inflateEnd(&stream);
EXPECT_EQ(src, decompressed);
}
TEST(ZlibTest, CRCHashAssert) {
// The CRC32c of the hex sequences ff,ff,5e,6f and ff,ff,13,ff have the same
// lower 15 bits. This means longest_match's assert that match[2] == scan[2]
// won't hold. However, such hash collisions are only possible when one of the
// other four bytes also mismatch. This tests that zlib's assert handles this
// case.
std::vector<uint8_t> src = {
// Random byte; zlib doesn't match at offset 0.
123,
// This has the same hash as the last byte sequence, and the first two and
// last two bytes match; though the third and the fourth don't.
0xff,
0xff,
0x5e,
0x6f,
0x12,
0x34,
// Offer a 5-byte match to bump the next expected match length to 6
// (because the two first and two last bytes need to match).
0xff,
0xff,
0x13,
0xff,
0x12,
0xff,
0xff,
0x13,
0xff,
0x12,
0x34,
};
z_stream stream;
stream.zalloc = nullptr;
stream.zfree = nullptr;
int ret = deflateInit2(&stream, /*comp level*/ 5, /*method*/ Z_DEFLATED,
/*windowbits*/ -15, /*memlevel*/ 8,
/*strategy*/ Z_DEFAULT_STRATEGY);
ASSERT_EQ(ret, Z_OK);
std::vector<uint8_t> compressed(100, '\0');
stream.next_out = compressed.data();
stream.avail_out = compressed.size();
stream.next_in = src.data();
stream.avail_in = src.size();
ret = deflate(&stream, Z_FINISH);
ASSERT_EQ(ret, Z_STREAM_END);
compressed.resize(compressed.size() - stream.avail_out);
deflateEnd(&stream);
ret = inflateInit2(&stream, /*windowbits*/ -15);
ASSERT_EQ(ret, Z_OK);
std::vector<uint8_t> decompressed(src.size(), '\0');
stream.next_in = compressed.data();
stream.avail_in = compressed.size();
stream.next_out = decompressed.data();
stream.avail_out = decompressed.size();
ret = inflate(&stream, Z_FINISH);
ASSERT_EQ(ret, Z_STREAM_END);
EXPECT_EQ(0U, stream.avail_out);
inflateEnd(&stream);
EXPECT_EQ(src, decompressed);
}
// Fuzzer generated.
static const uint8_t checkMatchCrashData[] = {
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc5, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00,
0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x00,
0x6e, 0x6e, 0x6e, 0x00, 0x00, 0x00, 0x00, 0x6e, 0x01, 0x39, 0x6e, 0x6e,
0x00, 0x00, 0x00, 0x00, 0xf7, 0xff, 0x00, 0x00, 0x00, 0x00, 0x6e, 0x6e,
0x00, 0x00, 0x0a, 0x9a, 0x00, 0x00, 0x6e, 0x6e, 0x6e, 0x2a, 0x00, 0x00,
0x00, 0xd5, 0xf0, 0x00, 0x81, 0x02, 0xf3, 0xfd, 0xff, 0xab, 0xf3, 0x6e,
0x7e, 0x04, 0x5b, 0xf6, 0x2a, 0x2c, 0xf8, 0x00, 0x54, 0xf3, 0xa5, 0x0e,
0xfd, 0x6e, 0xff, 0x00, 0xfd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0xa4, 0x0b, 0xa5, 0x2a, 0x0d, 0x10, 0x01, 0x26, 0xf6, 0x04, 0x0e,
0xff, 0x6e, 0x6e, 0x6e, 0x76, 0x00, 0x00, 0x87, 0x01, 0xfe, 0x0d, 0xb6,
0x6e, 0x6e, 0xf7, 0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xfd, 0x00, 0x2a, 0x00, 0x00, 0x00, 0x00, 0x29, 0x00, 0x9b,
0x02, 0x00, 0x00, 0x00, 0x00, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a,
0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x6e, 0xff, 0xff, 0x00,
0x00, 0xd5, 0xf0, 0x00, 0xff, 0x40, 0x7e, 0x0b, 0xa5, 0x10, 0x67, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x58, 0x00, 0x00,
0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x40, 0x7e, 0x0b, 0xa5, 0x10, 0x67,
0x7e, 0x32, 0x6e, 0x00, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x40, 0x0b, 0xa5,
0x10, 0x67, 0x01, 0xfe, 0x0d, 0xb6, 0x2a, 0x00, 0x00, 0x58, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x6e, 0xfd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x3d, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3d, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xd6, 0x2d, 0x2d, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a,
0x8a, 0x8a, 0x8a, 0x8a, 0x66, 0x8a, 0x8a, 0x8a, 0xee, 0x1d, 0x00, 0x00,
0x00, 0x02, 0x00, 0x00, 0x00, 0xee, 0x0a, 0x00, 0x00, 0x00, 0x54, 0x40,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xf3, 0x00, 0x00, 0xff, 0xff, 0x23, 0x7e, 0x00, 0x1e,
0x00, 0x00, 0xd5, 0xf0, 0x00, 0xff, 0x40, 0x0b, 0xa5, 0x10, 0x67, 0x01,
0xfe, 0x0d, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a,
0x8a, 0x8a, 0x8a, 0x2d, 0x6e, 0x2d, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x0e,
0xfb, 0x00, 0x10, 0x24, 0x00, 0x00, 0xfb, 0xff, 0x00, 0x00, 0xff, 0x1f,
0xb3, 0x00, 0x04, 0x3d, 0x00, 0xee, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3d, 0x00, 0x00,
0x00, 0x00, 0x00, 0x3d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x00,
0x01, 0x45, 0x3d, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x11, 0x21, 0x00, 0x1e,
0x00, 0x0c, 0xb3, 0xfe, 0x0e, 0xee, 0x02, 0x00, 0x1d, 0x00, 0x00, 0x00,
0x00, 0x00, 0x6e, 0x6e, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x6e, 0x00,
0x00, 0x87, 0x00, 0x33, 0x38, 0x6e, 0x6e, 0x6e, 0x6e, 0x6e, 0x00, 0x00,
0x00, 0x38, 0x00, 0x00, 0xff, 0xff, 0xff, 0x04, 0x3f, 0xff, 0xff, 0xff,
0x00, 0x00, 0x00, 0x00, 0xf0, 0x00, 0xff, 0x00, 0x31, 0x13, 0x13, 0x13,
0x0b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xab, 0x30, 0x83, 0x33,
0x00, 0x00, 0x01, 0x05, 0x00, 0x00, 0xff, 0xff, 0x7d, 0xff, 0x00, 0x01,
0x10, 0x0d, 0x2a, 0xa5, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x11,
0x21, 0x00, 0xa5, 0x00, 0x68, 0x68, 0x68, 0x67, 0x00, 0x00, 0xff, 0xff,
0x02, 0x00, 0x00, 0x68, 0x68, 0x68, 0x68, 0x00, 0x00, 0xfa, 0xff, 0xff,
0x03, 0x01, 0xff, 0x02, 0x00, 0x00, 0x68, 0x68, 0x68, 0x68, 0x0a, 0x10,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff,
0x06, 0x00, 0x00, 0x2b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xfa, 0xff, 0xff, 0x08, 0xff, 0xff, 0xff, 0x00, 0x06, 0x04,
0x00, 0xf8, 0xff, 0xff, 0x00, 0x01, 0x00, 0x00, 0x25, 0x00, 0x00, 0x00,
0x00, 0xff, 0x00, 0x00, 0x0b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x78, 0x00, 0x00, 0x01, 0x00, 0xff, 0xff, 0xff, 0x00, 0x06, 0x04, 0x6e,
0x7e, 0x87, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3d, 0x00, 0x00,
0x00, 0x6e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x87, 0x6e, 0x6e, 0x6e,
0x00, 0x01, 0x38, 0xd5, 0xf0, 0x00, 0x00, 0x2a, 0xfe, 0x04, 0x5b, 0x0d,
0xfd, 0x6e, 0x92, 0x28, 0xf9, 0xfb, 0xff, 0x07, 0xd2, 0xd6, 0x2d, 0x2d,
0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a, 0x8a,
0x8a, 0x8a, 0xc2, 0x91, 0x00, 0x5b, 0xef, 0xde, 0xf2, 0x6e, 0x6e, 0xfd,
0x0c, 0x02, 0x91, 0x62, 0x91, 0xfd, 0x6e, 0x6e, 0xd3, 0x06, 0x00, 0x00,
0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x00,
0xd5, 0xf0, 0x00, 0xff, 0x00, 0x00, 0x31, 0x13, 0x13, 0x13, 0x04, 0x00,
0x00, 0x00, 0x00, 0x0b, 0x00, 0x00, 0x04, 0x00, 0x13, 0x0a, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x6e, 0x00, 0x00, 0x01,
0x00, 0x00, 0x09, 0x00, 0x6a, 0x24, 0x26, 0x30, 0x01, 0x2e, 0x2a, 0xfe,
0x04, 0x5b, 0x0d, 0xfd, 0x6e, 0x6e, 0xd7, 0x06, 0x6e, 0x6e, 0x6e, 0x00,
0x00, 0xb1, 0xb1, 0xb1, 0xb1, 0x00, 0x00, 0x00, 0x6e, 0x5b, 0x00, 0x00,
0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x01, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00,
0x1e, 0x00, 0x00, 0x00, 0x87, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6b, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x0b,
0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x24, 0x2a, 0x6e, 0x5c, 0x24,
0x00, 0x00, 0x00, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x87, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xeb,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
0x00, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00, 0x00, 0x58, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x58, 0x00, 0x00, 0x00,
0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x05, 0x00, 0x00, 0x00, 0x5d, 0x10, 0x6e, 0x6e, 0xa5, 0x2f, 0x00, 0x00,
0x95, 0x87, 0x00, 0x6e};
TEST(ZlibTest, CheckMatchCrash) {
// See https://crbug.com/1113142.
z_stream stream;
stream.zalloc = nullptr;
stream.zfree = nullptr;
// Low windowbits to hit window sliding also with a relatively small input.
int ret = deflateInit2(&stream, /*comp level*/ 5, /*method*/ Z_DEFLATED,
/*windowbits*/ -9, /*memlevel*/ 8,
/*strategy*/ Z_DEFAULT_STRATEGY);
ASSERT_EQ(ret, Z_OK);
uint8_t compressed[sizeof(checkMatchCrashData) * 2];
stream.next_out = compressed;
stream.avail_out = sizeof(compressed);
for (size_t i = 0; i < sizeof(checkMatchCrashData); i++) {
ASSERT_GT(stream.avail_out, 0U);
stream.next_in = (uint8_t*)&checkMatchCrashData[i];
stream.avail_in = 1;
ret = deflate(&stream, Z_NO_FLUSH);
ASSERT_EQ(ret, Z_OK);
}
stream.next_in = nullptr;
stream.avail_in = 0;
ASSERT_GT(stream.avail_out, 0U);
ret = deflate(&stream, Z_FINISH);
ASSERT_EQ(ret, Z_STREAM_END);
size_t compressed_sz = sizeof(compressed) - stream.avail_out;
deflateEnd(&stream);
uint8_t decompressed[sizeof(checkMatchCrashData)];
ret = inflateInit2(&stream, -15);
ASSERT_EQ(ret, Z_OK);
stream.next_in = compressed;
stream.avail_in = compressed_sz;
stream.next_out = decompressed;
stream.avail_out = sizeof(decompressed);
ret = inflate(&stream, Z_FINISH);
ASSERT_EQ(ret, Z_STREAM_END);
inflateEnd(&stream);
ASSERT_EQ(
memcmp(checkMatchCrashData, decompressed, sizeof(checkMatchCrashData)),
0);
}
TEST(ZlibTest, DeflateRLEUninitUse) {
// MSan would complain about use of uninitialized values in deflate_rle if the
// window isn't zero-initialized. See crbug.com/1137613. Similar problems
// exist in other places in zlib, e.g. longest_match (crbug.com/1144420) but
// we don't have as nice test cases.
int level = 9;
int windowBits = 9;
int memLevel = 8;
int strategy = Z_RLE;
const std::vector<uint8_t> src{
0x31, 0x64, 0x38, 0x32, 0x30, 0x32, 0x30, 0x36, 0x65, 0x35, 0x38, 0x35,
0x32, 0x61, 0x30, 0x36, 0x65, 0x35, 0x32, 0x66, 0x30, 0x34, 0x38, 0x37,
0x61, 0x31, 0x38, 0x36, 0x37, 0x37, 0x31, 0x39, 0x0a, 0x65, 0x62, 0x00,
0x9f, 0xff, 0xc6, 0xc6, 0xc6, 0xff, 0x09, 0x00, 0x62, 0x00, 0x9f, 0xff,
0xc6, 0xc6, 0xc6, 0xff, 0x09, 0x00, 0x62, 0x00, 0x9f, 0xff, 0xc6, 0xc6,
0xc6, 0xff, 0x09, 0x00, 0x62, 0x00, 0x9f, 0xff, 0xc6, 0xc6, 0xc6, 0x95,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0d, 0x0e, 0x0a, 0x54, 0x52,
0x58, 0x56, 0xab, 0x26, 0x13, 0x53, 0x5a, 0xb5, 0x30, 0xbb, 0x96, 0x44,
0x80, 0xe6, 0xc5, 0x0a, 0xd0, 0x47, 0x7a, 0xa0, 0x4e, 0xbe, 0x30, 0xdc,
0xa1, 0x08, 0x54, 0xe1, 0x51, 0xd1, 0xea, 0xef, 0xdb, 0xa1, 0x2d, 0xb4,
0xb9, 0x58, 0xb1, 0x2f, 0xf0, 0xae, 0xbc, 0x07, 0xd1, 0xba, 0x7f, 0x14,
0xa4, 0xde, 0x99, 0x7f, 0x4d, 0x3e, 0x25, 0xd9, 0xef, 0xee, 0x4f, 0x38,
0x7b, 0xaf, 0x3f, 0x6b, 0x53, 0x5a, 0xcb, 0x1f, 0x97, 0xb5, 0x43, 0xa3,
0xe8, 0xff, 0x09, 0x00, 0x62, 0x00, 0x9f, 0xff, 0xc6, 0xc6, 0xc6, 0xff,
0x09, 0x00, 0x62, 0x00, 0x9f, 0xff, 0xc6, 0xc6, 0xc6, 0xff, 0x09, 0x00,
0x62, 0x00, 0x9f, 0xff, 0xc6, 0xc6, 0xc6, 0xff, 0x09, 0x00, 0x62, 0x00,
0x9f, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x3c,
0x73, 0x70, 0x23, 0x87, 0xec, 0xf8, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xc1, 0x00, 0x00, 0x9f, 0xc6, 0xc6, 0xff, 0x09, 0x00, 0x62, 0x00, 0x9f,
0xff, 0xc6, 0xc6, 0xc6, 0xff, 0x09, 0x00, 0x62, 0x00, 0x9f, 0xff, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00,
};
z_stream stream;
stream.zalloc = Z_NULL;
stream.zfree = Z_NULL;
// Compress the data one byte at a time to exercise the streaming code.
int ret =
deflateInit2(&stream, level, Z_DEFLATED, windowBits, memLevel, strategy);
ASSERT_EQ(ret, Z_OK);
std::vector<uint8_t> compressed(src.size() * 2 + 1000);
stream.next_out = compressed.data();
stream.avail_out = compressed.size();
for (uint8_t b : src) {
stream.next_in = &b;
stream.avail_in = 1;
ret = deflate(&stream, Z_NO_FLUSH);
ASSERT_EQ(ret, Z_OK);
}
stream.next_in = Z_NULL;
stream.avail_in = 0;
ret = deflate(&stream, Z_FINISH);
ASSERT_EQ(ret, Z_STREAM_END);
deflateEnd(&stream);
}
static const char zFixedCorruptionData[] =
"AAABAACAADAAEAAFAAGAAHAAIAAJAAKAALAAMAANAAOAAPAAQAARAASAATAAUAAVAAWAAXAAYA"
"AZABBABCABDABEABFABGABHABIABJABKABLABMABNABOABPABQABRABSABTABUABVABWABXABY"
"ABZACBACCACDACEACFACGACHACIACJACKACLACMACNACOACPACQACRACSACTACUACVACWACXAC"
"YACZADBADCADDADEADFADGADHADIADJADKADLADMADNADOADPADQADRADSADTADUADVADWADXA"
"DYADZAEBAECAEDAEEAEFAEGAEHAEIAEJAEKAELAEMAENAEOAEPAEQAERAESAETAEUAEVAEWAEX"
"AEYAEZAFBAFCAFDAFEAFFAFGAFHAFIAFJAFKAFLAFMAFNAFOAFPAFQAFRAFSAFTAFUAFVAFWAF"
"XAFYAFZAGBAGCAGDAGEAGFAGGAGHAGIAGJAGKAGLAGMAGNAGOAGPAGQAGRAGSAGTAGUAGVAGWA"
"GXAGYAGZAHBAHCAHDAHEAHFAHGAHHAHIAHJAHKAHLAHMAHNAHOAHPAHQAHRAHSAHTAHUAHVAHW"
"AHXAHYAHZAIBAICAIDAIEAIFAIGAIHAIIAIJAIKAILAIMAINAIOAIPAIQAIRAISAITAIUAIVAI"
"WAIXAIYAIZAJBAJCAJDAJEAJFAJGAJHAJIAJJAJKAJLAJMAJNAJOAJPAJQAJRAJSAJTAJUAJVA"
"JWAJXAJYAJZAKBAKCAKDAKEAKFAKGAKHAKIAKJAKKAKLAKMAKNAKOAKPAKQAKRAKSAKTAKUAKV"
"AKWAKXAKYAKZALBALCALDALEALFALGALHALIALJALKALLALMALNALOALPALQALRALSALTALUAL"
"VALWALXALYALZAMBAMCAMDAMEAMFAMGAMHAMIAMJAMKAMLAMMAMNAMOAMPAMQAMRAMSAMTAMUA"
"MVAMWAMXAMYAMZANBANCANDANEANFANGANHANIANJANKANLANMANNANOANPANQANRANSANTANU"
"ANVANWANXANYANZAOBAOCAODAOEAOFAOGAOHAOIAOJAOKAOLAOMAONAOOAOPAOQAORAOSAOTAO"
"UAOVAOWAOXAOYAOZAPBAPCAPDAPEAPFAPGAPHAPIAPJAPKAPLAPMAPNAPOAPPAPQAPRAPSAPTA"
"PUAPVAPWAPXAPYAPZAQBAQCAQDAQEAQFAQGAQHAQIAQJAQKAQLAQMAQNAQOAQPAQQAQRAQSAQT"
"AQUAQVAQWAQXAQYAQZARBARCARDAREARFARGARHARIARJARKARLARMARNAROARPARQARRARSAR"
"TARUARVARWARXARYARZASBASCASDASEASFASGASHASIASJASKASLASMASNASOASPASQASRASSA"
"STASUASVASWASXASYASZATBATCATDATEATFATGATHATIATJATKATLATMATNATOATPATQATRATS"
"ATTATUATVATWATXATYATZAUBAUCAUDAUEAUFAUGAUHAUIAUJAUKAULAUMAUNAUOAUPAUQAURAU"
"SAUTAUUAUVAUWAUXAUYAUZAVBAVCAVDAVEAVFAVGAVHAVIAVJAVKAVLAVMAVNAVOAVPAVQAVRA"
"VSAVTAVUAVVAVWAVXAVYAVZAWBAWCAWDAWEAWFAWGAWHAWIAWJAWKAWLAWMAWNAWOAWPAWQAWR"
"AWSAWTAWUAWVAWWAWXAWYAWZAXBAXCAXDAXEAXFAXGAXHAXIAXJAXKAXLAXMAXNAXOAXPAXQAX"
"RAXSAXTAXUAXVAXWAXXAXYAXZAYBAYCAYDAYEAYFAYGAYHAYIAYJAYKAYLAYMAYNAYOAYPAYQA"
"YRAYSAYTAYUAYVAYWAYXAYYAYZAZBAZCAZDAZEAZFAZGAZHAZIAZJAZKAZLAZMAZNAZOAZPAZQ"
"AZRAZSAZTAZUAZVAZWAZXAZYAZZBBBCBBDBBEBBFBBGBBHBBIBBJBBKBBLBBMBBNBBOBBPBBQB"
"BRBBSBBTBBUBBVBBWBBXBBYBBZBCCBCDBCEBCFBCGBCHBCIBCJBCKBCLBCMBCNBCOBCPBCQBCR"
"BCSBCTBCUBCVBCWBCXBCYBCZBDCBDDBDEBDFBDGBDHBDIBDJBDKBDLBDMBDNBDOBDPBDQBDRBD"
"SBDTBDUBDVBDWBDXBDYBDZBECBEDBEEBEFBEGBEHBEIBEJBEKBELBEMBENBEOBEPBEQBERBESB"
"ETBEUBEVBEWBEXBEYBEZBFCBFDBFEBFFBFGBFHBFIBFJBFKBFLBFMBFNBFOBFPBFQBFRBFSBFT"
"BFUBFVBFWBFXBFYBFZBGCBGDBGEBGFBGGBGHBGIBGJBGKBGLBGMBGNBGOBGPBGQBGRBGSBGTBG"
"UBGVBGWBGXBGYBGZBHCBHDBHEBHFBHGBHHBHIBHJBHKBHLBHMBHNBHOBHPBHQBHRBHSBHTBHUB"
"HVBHWBHXBHYBHZBICBIDBIEBIFBIGBIHBIIBIJBIKBILBIMBINBIOBIPBIQBIRBISBITBIUBIV"
"BIWBIXBIYBIZBJCBJDBJEBJFBJGBJHBJIBJJBJKBJLBJMBJNBJOBJPBJQBJRBJSBJTBJUBJVBJ"
"WBJXBJYBJZBKCBKDBKEBKFBKGBKHBKIBKJBKKBKLBKMBKNBKOBKPBKQBKRBKSBKTBKUBKVBKWB"
"KXBKYBKZBLCBLDBLEBLFBLGBLHBLIBLJBLKBLLBLMBLNBLOBLPBLQBLRBLSBLTBLUBLVBLWBLX"
"BLYBLZBMCBMDBMEBMFBMGBMHBMIBMJBMKBMLBMMBMNBMOBMPBMQBMRBMSBMTBMUBMVBMWBMXBM"
"YBMZBNCBNDBNEBNFBNGBNHBNIBNJBNKBNLBNMBNNBNOBNPBNQBNRBNSBNTBNUBNVBNWBNXBNYB"
"NZBOCBODBOEBOFBOGBOHBOIBOJBOKBOLBOMBONBOOBOPBOQBORBOSBOTBOUBOVBOWBOXBOYBOZ"
"BPCBPDBPEBPFBPGBPHBPIBPJBPKBPLBPMBPNBPOBPPBPQBPRBPSBPTBPUBPVBPWBPXBPYBPZBQ"
"CBQDBQEBQFBQGBQHBQIBQJBQKBQLBQMBQNBQOBQPBQQBQRBQSBQTBQUBQVBQWBQXBQYBQZBRCB"
"RDBREBRFBRGBRHBRIBRJBRKBRLBRMBRNBROBRPBRQBRRBRSBRTBRUBRVBRWBRXBRYBRZBSCBSD"
"BSEBSFBSGBSHBSIBSJBSKBSLBSMBSNBSOBSPBSQBSRBSSBSTBSUBSVBSWBSXBSYBSZBTCBTDBT"
"EBTFBTGBTHBTIBTJBTKBTLBTMBTNBTOBTPBTQBTRBTSBTTBTUBTVBTWBTXBTYBTZBUCBUDBUEB"
"UFBUGBUHBUIBUJBUKBULBUMBUNBUOBUPBUQBURBUSBUTBUUBUVBUWBUXBUYBUZBVCBVDBVEBVF"
"BVGBVHBVIBVJBVKBVLBVMBVNBVOBVPBVQBVRBVSBVTBVUBVVBVWBVXBVYBVZBWCBWDBWEBWFBW"
"GBWHBWIBWJBWKBWLBWMBWNBWOBWPBWQBWRBWSBWTBWUBWVBWWBWXBWYBWZBXCBXDBXEBXFBXGB"
"XHBXIBXJBXKBXLBXMBXNBXOBXPBXQBXRBXSBXTBXUBXVBXWBXXBXYBXZBYCBYDBYEBYFBYGBYH"
"BYIBYJBYKBYLBYMBYNBYOBYPBYQBYRBYSBYTBYUBYVBYWBYXBYYBYZBZCBZDBZEBZFBZGBZHBZ"
"IBZJBZKBZLBZMBZNBZOBZPBZQBZRBZSBZTBZUBZVBZWBZXBZYBZZCCCDCCECCFCCGCCHCCICCJ"
"CCKCCLCCMCCNCCOCCPCCQCCRCCSCCTCCUCCVCCWCCXCCYCCZCDDCDECDFCDGCDHCDICDJCDKCD"
"LCDMCDNCDOCDPCDQCDRCDSCDTCDUCDVCDWCDXCDYCDZCEDCEECEFCEGCEHCEICEJCEKCELCEMC"
"ENCEOCEPCEQCERCESCETCEUCEVCEWCEXCEYCEZCFDCFECFFCFGCFHCFICFJCFKCFLCFMCFNCFO"
"CFPCFQCFRCFSCFTCFUCFVCFWCFXCFYCFZCGDCGECGFCGGCGHCGICGJCGKCGLCGMCGNCGOCGPCG"
"QCGRCGSCGTCGUCGVCGWCGXCGYCGZCHDCHECHFCHGCHHCHICHJCHKCHLCHMCHNCHOCHPCHQCHRC"
"HSCHTCHUCHVCHWCHXCHYCHZCIDCIECIFCIGCIHCIICIJCIKCILCIMCINCIOCIPCIQCIRCISCIT"
"CIUCIVCIWCIXCIYCIZCJDCJECJFCJGCJHCJICJJCJKCJLCJMCJNCJOCJPCJQCJRCJSCJTCJUCJ"
"VCJWCJXCJYCJZCKDCKECKFCKGCKHCKICKJCKKCKLCKMCKNCKOCKPCKQCKRCKSCKTCKUCKVCKWC"
"KXCKYCKZCLDCLECLFCLGCLHCLICLJCLKCLLCLMCLNCLOCLPCLQCLRCLSCLTCLUCLVCLWCLXCLY"
"CLZCMDCMECMFCMGCMHCMICMJCMKCMLCMMCMNCMOCMPCMQCMRCMSCMTCMUCMVCMWCMXCMYCMZCN"
"DCNECNFCNGCNHCNICNJCNKCNLCNMCNNCNOCNPCNQCNRCNSCNTCNUCNVCNWCNXCNYCNZCODCOEC"
"OFCOGCOHCOICOJCOKCOLCOMCONCOOCOPCOQCORCOSCOTCOUCOVCOWCOXCOYCOZCPDCPECPFCPG"
"CPHCPICPJCPKCPLCPMCPNCPOCPPCPQCPRCPSCPTCPUCPVCPWCPXCPYCPZCQDCQECQFCQGCQHCQ"
"ICQJCQKCQLCQMCQNCQOCQPCQQCQRCQSCQTCQUCQVCQWCQXCQYCQZCRDCRECRFCRGCRHCRICRJC"
"RKCRLCRMCRNCROCRPCRQCRRCRSCRTCRUCRVCRWCRXCRYCRZCSDCSECSFCSGCSHCSICSJCSKCSL"
"CSMCSNCSOCSPCSQCSRCSSCSTCSUCSVCSWCSXCSYCSZCTDCTECTFCTGCTHCTICTJCTKCTLCTMCT"
"NCTOCTPCTQCTRCTSCTTCTUCTVCTWCTXCTYCTZCUDCUECUFCUGCUHCUICUJCUKCULCUMCUNCUOC"
"UPCUQCURCUSCUTCUUCUVCUWCUXCUYCUZCVDCVECVFCVGCVHCVICVJCVKCVLCVMCVNCVOCVPCVQ"
"CVRCVSCVTCVUCVVCVWCVXCVYCVZCWDCWECWFCWGCWHCWICWJCWKCWLCWMCWNCWOCWPCWQCWRCW"
"SCWTCWUCWVCWWCWXCWYCWZCXDCXECXFCXGCXHCXICXJCXKCXLCXMCXNCXOCXPCXQCXRCXSCXTC"
"XUCXVCXWCXXCXYCXZCYDCYECYFCYGCYHCYICYJCYKCYLCYMCYNCYOCYPCYQCYRCYSCYTCYUCYV"
"CYWCYXCYYCYZCZDCZECZFCZGCZHCZICZJCZKCZLCZMCZNCZOCZPCZQCZRCZSCZTCZUCZVCZWCZ"
"XCZYCZZDDDEDDFDDGDDHDDIDDJDDKDDLDDMDDNDDODDPDDQDDRDDSDDTDDUDDVDDWDDXDDYDDZ"
"DEEDEFDEGDEHDEIDEJDEKDELDEMDENDEODEPDEQDERDESDETDEUDEVDEWDEXDEYDEZDFEDFFDF"
"GDFHDFIDFJDFKDFLDFMDFNDFODFPDFQDFRDFSDFTDFUDFVDFWDFXDFYDFZDGEDGFDGGDGHDGID"
"GJDGKDGLDGMDGNDGODGPDGQDGRDGSDGTDGUDGVDGWDGXDGYDGZDHEDHFDHGDHHDHIDHJDHKDHL"
"DHMDHNDHODHPDHQDHRDHSDHTDHUDHVDHWDHXDHYDHZDIEDIFDIGDIHDIIDIJDIKDILDIMDINDI"
"ODIPDIQDIRDISDITDIUDIVDIWDIXDIYDIZDJEDJFDJGDJHDJIDJJDJKDJLDJMDJNDJODJPDJQD"
"JRDJSDJTDJUDJVDJWDJXDJYDJZDKEDKFDKGDKHDKIDKJDKKDKLDKMDKNDKODKPDKQDKRDKSDKT"
"DKUDKVDKWDKXDKYDKZDLEDLFDLGDLHDLIDLJDLKDLLDLMDLNDLODLPDLQDLRDLSDLTDLUDLVDL"
"WDLXDLYDLZDMEDMFDMGDMHDMIDMJDMKDMLDMMDMNDMODMPDMQDMRDMSDMTDMUDMVDMWDMXDMYD"
"MZDNEDNFDNGDNHDNIDNJDNKDNLDNMDNNDNODNPDNQDNRDNSDNTDNUDNVDNWDNXDNYDNZDOEDOF"
"DOGDOHDOIDOJDOKDOLDOMDONDOODOPDOQDORDOSDOTDOUDOVDOWDOXDOYDOZDPEDPFDPGDPHDP"
"IDPJDPKDPLDPMDPNDPODPPDPQDPRDPSDPTDPUDPVDPWDPXDPYDPZDQEDQFDQGDQHDQIDQJDQKD"
"QLDQMDQNDQODQPDQQDQRDQSDQTDQUDQVDQWDQXDQYDQZDREDRFDRGDRHDRIDRJDRKDRLDRMDRN"
"DRODRPDRQDRRDRSDRTDRUDRVDRWDRXDRYDRZDSEDSFDSGDSHDSIDSJDSKDSLDSMDSNDSODSPDS"
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TEST(ZlibTest, DeflateZFixedCorruption) {
// Tavis's test case from
// https://www.openwall.com/lists/oss-security/2022/03/26/1
// The upstream fix,
// https://github.com/madler/zlib/commit/5c44459c3b28a9bd3283aaceab7c615f8020c531,
// was merged in Chromium in #583975.
z_stream stream;
stream.zalloc = Z_NULL;
stream.zfree = Z_NULL;
int level = Z_DEFAULT_COMPRESSION;
int windowBits = 15;
int memLevel = 1;
int strategy = Z_FIXED;
int ret =
deflateInit2(&stream, level, Z_DEFLATED, windowBits, memLevel, strategy);
ASSERT_EQ(ret, Z_OK);
std::vector<uint8_t> compressed(
deflateBound(&stream, strlen(zFixedCorruptionData)));
stream.next_out = compressed.data();
stream.avail_out = compressed.size();
stream.next_in = (uint8_t*)zFixedCorruptionData;
stream.avail_in = strlen(zFixedCorruptionData);
ret = deflate(&stream, Z_FINISH);
ASSERT_EQ(ret, Z_STREAM_END);
size_t compressed_sz = compressed.size() - stream.avail_out;
deflateEnd(&stream);
std::vector<uint8_t> decompressed(strlen(zFixedCorruptionData));
ret = inflateInit2(&stream, windowBits);
ASSERT_EQ(ret, Z_OK);
stream.next_in = compressed.data();
stream.avail_in = compressed_sz;
stream.next_out = decompressed.data();
stream.avail_out = decompressed.size();
ret = inflate(&stream, Z_FINISH);
ASSERT_EQ(ret, Z_STREAM_END);
inflateEnd(&stream);
EXPECT_EQ(decompressed.size(), strlen(zFixedCorruptionData));
EXPECT_EQ(
memcmp(zFixedCorruptionData, decompressed.data(), decompressed.size()),
0);
}
TEST(ZlibTest, ZipFilenameCommentSize) {
// Check that minizip rejects zip member filenames or comments longer than
// the zip format can represent.
base::ScopedTempDir temp_dir;
ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
base::FilePath zip_file = temp_dir.GetPath().AppendASCII("crbug1470539.zip");
zipFile zf = zipOpen(zip_file.AsUTF8Unsafe().c_str(), APPEND_STATUS_CREATE);
ASSERT_NE(zf, nullptr);
// Adding a member with 2^16 byte filename is okay.
std::string long_filename(UINT16_MAX, 'a');
EXPECT_EQ(zipOpenNewFileInZip(zf, long_filename.c_str(), nullptr, nullptr, 0,
nullptr, 0, nullptr, Z_DEFLATED,
Z_DEFAULT_COMPRESSION),
ZIP_OK);
EXPECT_EQ(zipWriteInFileInZip(zf, "1", 1), ZIP_OK);
EXPECT_EQ(zipCloseFileInZip(zf), ZIP_OK);
// Adding a member with 2^16+1 byte filename is NOT okay.
std::string too_long_filename = long_filename + 'a';
EXPECT_EQ(zipOpenNewFileInZip(zf, too_long_filename.c_str(), nullptr, nullptr,
0, nullptr, 0, nullptr, Z_DEFLATED,
Z_DEFAULT_COMPRESSION),
ZIP_PARAMERROR);
// Adding a member with 2^16 byte comment is okay.
std::string long_comment(UINT16_MAX, 'x');
EXPECT_EQ(zipOpenNewFileInZip(zf, "x", nullptr, nullptr, 0, nullptr, 0,
long_comment.c_str(), Z_DEFLATED,
Z_DEFAULT_COMPRESSION),
ZIP_OK);
EXPECT_EQ(zipCloseFileInZip(zf), ZIP_OK);
// Adding a member with 2^16+1 byte comment is NOT okay.
std::string too_long_comment = long_comment + 'x';
EXPECT_EQ(zipOpenNewFileInZip(zf, "x", nullptr, nullptr, 0, nullptr, 0,
too_long_comment.c_str(), Z_DEFLATED,
Z_DEFAULT_COMPRESSION),
ZIP_PARAMERROR);
EXPECT_EQ(zipClose(zf, nullptr), ZIP_OK);
// Check that the long filename and comment members were successfully added.
unzFile uzf = unzOpen(zip_file.AsUTF8Unsafe().c_str());
ASSERT_NE(uzf, nullptr);
char buf[UINT16_MAX + 2];
ASSERT_EQ(unzGoToFirstFile(uzf), UNZ_OK);
ASSERT_EQ(unzGetCurrentFileInfo(uzf, nullptr, buf, sizeof(buf), nullptr, 0,
nullptr, 0),
UNZ_OK);
EXPECT_EQ(std::string(buf), long_filename);
ASSERT_EQ(unzGoToNextFile(uzf), UNZ_OK);
ASSERT_EQ(unzGetCurrentFileInfo(uzf, nullptr, nullptr, 0, nullptr, 0, buf,
sizeof(buf)),
UNZ_OK);
EXPECT_EQ(std::string(buf), long_comment);
EXPECT_EQ(unzGoToNextFile(uzf), UNZ_END_OF_LIST_OF_FILE);
EXPECT_EQ(unzClose(uzf), UNZ_OK);
}
TEST(ZlibTest, ZipExtraFieldSize) {
// Check that minizip rejects zip members with too large extra fields.
std::string extra_field;
extra_field.append("\x12\x34"); // Header ID.
extra_field.append("\xfb\xff"); // Data size (not including the header).
extra_field.append(UINT16_MAX - 4, 'a');
base::ScopedTempDir temp_dir;
ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
base::FilePath zip_file = temp_dir.GetPath().AppendASCII("extrafield.zip");
zipFile zf = zipOpen(zip_file.AsUTF8Unsafe().c_str(), APPEND_STATUS_CREATE);
ASSERT_NE(zf, nullptr);
// Adding a member with 2^16 byte extra field should work.
EXPECT_EQ(zipOpenNewFileInZip(zf, "a", nullptr, extra_field.data(),
extra_field.size(), extra_field.data(),
extra_field.size(), nullptr, Z_DEFLATED,
Z_DEFAULT_COMPRESSION),
ZIP_OK);
EXPECT_EQ(zipWriteInFileInZip(zf, "1", 1), ZIP_OK);
EXPECT_EQ(zipCloseFileInZip(zf), ZIP_OK);
// More then 2^16 bytes doesn't work. Neither for size_extrafield_local, nor
// size_extrafield_global.
std::string extra_field_long = extra_field + 'x';
EXPECT_EQ(
zipOpenNewFileInZip(zf, "b", nullptr, nullptr, 0, extra_field_long.data(),
extra_field_long.size(), nullptr, Z_DEFLATED,
Z_DEFAULT_COMPRESSION),
ZIP_PARAMERROR);
EXPECT_EQ(zipOpenNewFileInZip(zf, "b", nullptr, extra_field_long.data(),
extra_field_long.size(), nullptr, 0, nullptr,
Z_DEFLATED, Z_DEFAULT_COMPRESSION),
ZIP_PARAMERROR);
EXPECT_EQ(zipClose(zf, nullptr), ZIP_OK);
// Check that the data can be read back.
unzFile uzf = unzOpen(zip_file.AsUTF8Unsafe().c_str());
ASSERT_NE(uzf, nullptr);
char buf[UINT16_MAX + 1] = {0};
ASSERT_EQ(unzGoToFirstFile(uzf), UNZ_OK);
ASSERT_EQ(unzGetCurrentFileInfo(uzf, nullptr, nullptr, 0, buf,
sizeof(buf) - 1, nullptr, 0),
UNZ_OK);
EXPECT_EQ(std::string(buf), extra_field);
EXPECT_EQ(unzGoToNextFile(uzf), UNZ_END_OF_LIST_OF_FILE);
EXPECT_EQ(unzClose(uzf), UNZ_OK);
}
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