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| //
| // Copyright (C) 2015 The Android Open Source Project
| //
| // Licensed under the Apache License, Version 2.0 (the "License");
| // you may not use this file except in compliance with the License.
| // You may obtain a copy of the License at
| //
| // http://www.apache.org/licenses/LICENSE-2.0
| //
| // Unless required by applicable law or agreed to in writing, software
| // distributed under the License is distributed on an "AS IS" BASIS,
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
| // See the License for the specific language governing permissions and
| // limitations under the License.
| //
|
| #include "update_engine/payload_consumer/xz_extent_writer.h"
|
| #include <fcntl.h>
| #include <sys/stat.h>
| #include <sys/types.h>
| #include <unistd.h>
|
| #include <algorithm>
|
| #include <base/memory/ptr_util.h>
| #include <gtest/gtest.h>
|
| #include "update_engine/common/test_utils.h"
| #include "update_engine/common/utils.h"
| #include "update_engine/payload_consumer/fake_extent_writer.h"
|
| namespace chromeos_update_engine {
|
| namespace {
|
| const char kSampleData[] = "Redundaaaaaaaaaaaaaant\n";
|
| // Compressed data with CRC-32 check, generated with:
| // echo "Redundaaaaaaaaaaaaaant" | xz -9 --check=crc32 |
| // hexdump -v -e '" " 12/1 "0x%02x, " "\n"'
| const uint8_t kCompressedDataCRC32[] = {
| 0xfd, 0x37, 0x7a, 0x58, 0x5a, 0x00, 0x00, 0x01, 0x69, 0x22, 0xde, 0x36,
| 0x02, 0x00, 0x21, 0x01, 0x1c, 0x00, 0x00, 0x00, 0x10, 0xcf, 0x58, 0xcc,
| 0xe0, 0x00, 0x16, 0x00, 0x10, 0x5d, 0x00, 0x29, 0x19, 0x48, 0x87, 0x88,
| 0xec, 0x49, 0x88, 0x73, 0x8b, 0x5d, 0xa6, 0x46, 0xb4, 0x00, 0x00, 0x00,
| 0x68, 0xfc, 0x7b, 0x25, 0x00, 0x01, 0x28, 0x17, 0x46, 0x9e, 0x08, 0xfe,
| 0x90, 0x42, 0x99, 0x0d, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5a,
| };
|
| // Compressed data without checksum, generated with:
| // echo "Redundaaaaaaaaaaaaaant" | xz -9 --check=none |
| // hexdump -v -e '" " 12/1 "0x%02x, " "\n"'
| const uint8_t kCompressedDataNoCheck[] = {
| 0xfd, 0x37, 0x7a, 0x58, 0x5a, 0x00, 0x00, 0x00, 0xff, 0x12, 0xd9, 0x41,
| 0x02, 0x00, 0x21, 0x01, 0x1c, 0x00, 0x00, 0x00, 0x10, 0xcf, 0x58, 0xcc,
| 0xe0, 0x00, 0x16, 0x00, 0x10, 0x5d, 0x00, 0x29, 0x19, 0x48, 0x87, 0x88,
| 0xec, 0x49, 0x88, 0x73, 0x8b, 0x5d, 0xa6, 0x46, 0xb4, 0x00, 0x00, 0x00,
| 0x00, 0x01, 0x24, 0x17, 0x4a, 0xd1, 0xbd, 0x52, 0x06, 0x72, 0x9e, 0x7a,
| 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x59, 0x5a,
| };
|
| // Highly redundant data bigger than the internal buffer, generated with:
| // dd if=/dev/zero bs=30K count=1 | tr '\0' 'a' | xz -9 --check=crc32 |
| // hexdump -v -e '" " 12/1 "0x%02x, " "\n"'
| const uint8_t kCompressed30KiBofA[] = {
| 0xfd, 0x37, 0x7a, 0x58, 0x5a, 0x00, 0x00, 0x01, 0x69, 0x22, 0xde, 0x36,
| 0x02, 0x00, 0x21, 0x01, 0x1c, 0x00, 0x00, 0x00, 0x10, 0xcf, 0x58, 0xcc,
| 0xe0, 0x77, 0xff, 0x00, 0x41, 0x5d, 0x00, 0x30, 0xef, 0xfb, 0xbf, 0xfe,
| 0xa3, 0xb1, 0x5e, 0xe5, 0xf8, 0x3f, 0xb2, 0xaa, 0x26, 0x55, 0xf8, 0x68,
| 0x70, 0x41, 0x70, 0x15, 0x0f, 0x8d, 0xfd, 0x1e, 0x4c, 0x1b, 0x8a, 0x42,
| 0xb7, 0x19, 0xf4, 0x69, 0x18, 0x71, 0xae, 0x66, 0x23, 0x8a, 0x8a, 0x4d,
| 0x2f, 0xa3, 0x0d, 0xd9, 0x7f, 0xa6, 0xe3, 0x8c, 0x23, 0x11, 0x53, 0xe0,
| 0x59, 0x18, 0xc5, 0x75, 0x8a, 0xe2, 0x76, 0x4c, 0xee, 0x30, 0x00, 0x00,
| 0x00, 0x00, 0x00, 0x00, 0xf9, 0x47, 0xb5, 0xee, 0x00, 0x01, 0x59, 0x80,
| 0xf0, 0x01, 0x00, 0x00, 0xe0, 0x41, 0x96, 0xde, 0x3e, 0x30, 0x0d, 0x8b,
| 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x59, 0x5a,
| };
|
| } // namespace
|
| class XzExtentWriterTest : public ::testing::Test {
| protected:
| void SetUp() override {
| fake_extent_writer_ = new FakeExtentWriter();
| xz_writer_.reset(new XzExtentWriter(base::WrapUnique(fake_extent_writer_)));
| }
|
| void WriteAll(const brillo::Blob& compressed) {
| EXPECT_TRUE(xz_writer_->Init(fd_, {}, 1024));
| EXPECT_TRUE(xz_writer_->Write(compressed.data(), compressed.size()));
|
| EXPECT_TRUE(fake_extent_writer_->InitCalled());
| }
|
| // Owned by |xz_writer_|. This object is invalidated after |xz_writer_| is
| // deleted.
| FakeExtentWriter* fake_extent_writer_{nullptr};
| std::unique_ptr<XzExtentWriter> xz_writer_;
|
| const brillo::Blob sample_data_{
| std::begin(kSampleData), std::begin(kSampleData) + strlen(kSampleData)};
| FileDescriptorPtr fd_;
| };
|
| TEST_F(XzExtentWriterTest, CreateAndDestroy) {
| // Test that no Init() or End() called doesn't crash the program.
| EXPECT_FALSE(fake_extent_writer_->InitCalled());
| }
|
| TEST_F(XzExtentWriterTest, CompressedSampleData) {
| WriteAll(brillo::Blob(std::begin(kCompressedDataNoCheck),
| std::end(kCompressedDataNoCheck)));
| EXPECT_EQ(sample_data_, fake_extent_writer_->WrittenData());
| }
|
| TEST_F(XzExtentWriterTest, CompressedSampleDataWithCrc) {
| WriteAll(brillo::Blob(std::begin(kCompressedDataCRC32),
| std::end(kCompressedDataCRC32)));
| EXPECT_EQ(sample_data_, fake_extent_writer_->WrittenData());
| }
|
| TEST_F(XzExtentWriterTest, CompressedDataBiggerThanTheBuffer) {
| // Test that even if the output data is bigger than the internal buffer, all
| // the data is written.
| WriteAll(brillo::Blob(std::begin(kCompressed30KiBofA),
| std::end(kCompressed30KiBofA)));
| brillo::Blob expected_data(30 * 1024, 'a');
| EXPECT_EQ(expected_data, fake_extent_writer_->WrittenData());
| }
|
| TEST_F(XzExtentWriterTest, GarbageDataRejected) {
| EXPECT_TRUE(xz_writer_->Init(fd_, {}, 1024));
| // The sample_data_ is an uncompressed string.
| EXPECT_FALSE(xz_writer_->Write(sample_data_.data(), sample_data_.size()));
| }
|
| TEST_F(XzExtentWriterTest, PartialDataIsKept) {
| brillo::Blob compressed(std::begin(kCompressed30KiBofA),
| std::end(kCompressed30KiBofA));
| EXPECT_TRUE(xz_writer_->Init(fd_, {}, 1024));
| for (uint8_t byte : compressed) {
| EXPECT_TRUE(xz_writer_->Write(&byte, 1));
| }
|
| // The sample_data_ is an uncompressed string.
| brillo::Blob expected_data(30 * 1024, 'a');
| EXPECT_EQ(expected_data, fake_extent_writer_->WrittenData());
| }
|
| } // namespace chromeos_update_engine
|
|
