sandboxed-api/contrib/lodepng/examples/main_unit_test.cc
Christian Blichmann 4ec09d0061 Update and move lodepng to contrib/
- Drop patch from `CMakeLists.txt` in favor forcing C compilation
- Use `sapi` namespace and new logging integration
- Update sandbox policy to allow to retrieve thread ids
- Add tests to GitHub Workflow

PiperOrigin-RevId: 454133584
Change-Id: I50946245c723eb1e496ed1403b70ba08d977494e
2022-06-10 04:24:12 -07:00

210 lines
7.6 KiB
C++

// Copyright 2020 Google LLC
//
// 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
//
// https://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 "helpers.h" // NOLINT(build/include)
#include "sandbox.h" // NOLINT(build/include)
#include "gtest/gtest.h"
#include "sandboxed_api/util/status_matchers.h"
using ::sapi::IsOk;
using ::testing::Eq;
using ::testing::IsTrue;
using ::testing::NotNull;
namespace {
TEST(HelpersTest, CreateTempDirAtCWD) {
const std::string images_path = CreateTempDirAtCWD();
ASSERT_THAT(sapi::file_util::fileops::Exists(images_path, false), IsTrue())
<< "Temporary directory does not exist";
EXPECT_THAT(sapi::file_util::fileops::DeleteRecursively(images_path),
IsTrue())
<< "Temporary directory could not be deleted";
}
TEST(HelpersTest, GenerateValues) {
EXPECT_THAT(GenerateValues().size(), Eq(kImgLen));
}
TEST(LodePngTest, Init) {
const std::string images_path = CreateTempDirAtCWD();
ASSERT_THAT(sapi::file_util::fileops::Exists(images_path, false), IsTrue())
<< "Temporary directory does not exist";
SapiLodepngSandbox sandbox(images_path);
ASSERT_THAT(sandbox.Init(), IsOk()) << "Error during sandbox init";
EXPECT_THAT(sapi::file_util::fileops::DeleteRecursively(images_path),
IsTrue())
<< "Temporary directory could not be deleted";
}
// Generate an image, encode it, decode it and compare the pixels with the
// initial values.
TEST(LodePngTest, EncodeDecodeOneStep) {
const std::string images_path = CreateTempDirAtCWD();
ASSERT_THAT(sapi::file_util::fileops::Exists(images_path, false), IsTrue())
<< "Temporary directory does not exist";
SapiLodepngSandbox sandbox(images_path);
ASSERT_THAT(sandbox.Init(), IsOk()) << "Error during sandbox initialization";
LodepngApi api(&sandbox);
std::vector<uint8_t> image = GenerateValues();
sapi::v::Array<uint8_t> sapi_image(kImgLen);
EXPECT_THAT(std::copy(image.begin(), image.end(), sapi_image.GetData()),
IsTrue())
<< "Could not copy values";
sapi::v::ConstCStr sapi_filename("/output/out_generated1.png");
SAPI_ASSERT_OK_AND_ASSIGN(
unsigned int result,
api.lodepng_encode32_file(sapi_filename.PtrBefore(),
sapi_image.PtrBefore(), kWidth, kHeight));
ASSERT_THAT(result, Eq(0)) << "Unexpected result from encode32_file call";
sapi::v::UInt sapi_width, sapi_height;
sapi::v::IntBase<uint8_t*> sapi_image_ptr(0);
SAPI_ASSERT_OK_AND_ASSIGN(
result, api.lodepng_decode32_file(
sapi_image_ptr.PtrBoth(), sapi_width.PtrBoth(),
sapi_height.PtrBoth(), sapi_filename.PtrBefore()));
ASSERT_THAT(result, Eq(0)) << "Unexpected result from decode32_file call";
EXPECT_THAT(sapi_width.GetValue(), Eq(kWidth)) << "Widths differ";
EXPECT_THAT(sapi_height.GetValue(), Eq(kHeight)) << "Heights differ";
sapi::v::Array<uint8_t> sapi_pixels(kImgLen);
sapi_pixels.SetRemote(sapi_image_ptr.GetValue());
ASSERT_THAT(sandbox.TransferFromSandboxee(&sapi_pixels), IsOk())
<< "Error during transfer from sandboxee";
EXPECT_THAT(absl::equal(image.begin(), image.end(), sapi_pixels.GetData(),
sapi_pixels.GetData() + kImgLen),
IsTrue())
<< "Values differ";
EXPECT_THAT(sandbox.rpc_channel()->Free(sapi_image_ptr.GetValue()), IsOk())
<< "Could not free memory inside sandboxed process";
EXPECT_THAT(sapi::file_util::fileops::DeleteRecursively(images_path),
IsTrue())
<< "Temporary directory could not be deleted";
}
// Similar to the previous test, only that we use encoding by saving the data in
// memory and then writing it to the file and decoding by first decoding in
// memory and then getting the actual pixel values.
TEST(LodePngTest, EncodeDecodeTwoSteps) {
const std::string images_path = CreateTempDirAtCWD();
ASSERT_THAT(sapi::file_util::fileops::Exists(images_path, false), IsTrue())
<< "Temporary directory does not exist";
SapiLodepngSandbox sandbox(images_path);
ASSERT_THAT(sandbox.Init(), IsOk()) << "Error during sandbox init";
LodepngApi api(&sandbox);
std::vector<uint8_t> image = GenerateValues();
sapi::v::Array<uint8_t> sapi_image(kImgLen);
EXPECT_THAT(std::copy(image.begin(), image.end(), sapi_image.GetData()),
IsTrue())
<< "Could not copy values";
sapi::v::ConstCStr sapi_filename("/output/out_generated2.png");
sapi::v::ULLong sapi_pngsize;
sapi::v::IntBase<uint8_t*> sapi_png_ptr(0);
SAPI_ASSERT_OK_AND_ASSIGN(
unsigned int result,
api.lodepng_encode32(sapi_png_ptr.PtrBoth(), sapi_pngsize.PtrBoth(),
sapi_image.PtrBefore(), kWidth, kHeight));
ASSERT_THAT(result, Eq(0)) << "Unexpected result from encode32 call";
sapi::v::Array<uint8_t> sapi_png_array(sapi_pngsize.GetValue());
sapi_png_array.SetRemote(sapi_png_ptr.GetValue());
ASSERT_THAT(sandbox.TransferFromSandboxee(&sapi_png_array), IsOk())
<< "Error during transfer from sandboxee";
SAPI_ASSERT_OK_AND_ASSIGN(
result,
api.lodepng_save_file(sapi_png_array.PtrBefore(), sapi_pngsize.GetValue(),
sapi_filename.PtrBefore()));
ASSERT_THAT(result, Eq(0)) << "Unexpected result from save_file call";
sapi::v::UInt sapi_width, sapi_height;
sapi::v::IntBase<uint8_t*> sapi_png_ptr2(0);
sapi::v::ULLong sapi_pngsize2;
SAPI_ASSERT_OK_AND_ASSIGN(
result,
api.lodepng_load_file(sapi_png_ptr2.PtrBoth(), sapi_pngsize2.PtrBoth(),
sapi_filename.PtrBefore()));
ASSERT_THAT(result, Eq(0)) << "Unexpected result from load_file call";
EXPECT_THAT(sapi_pngsize.GetValue(), Eq(sapi_pngsize2.GetValue()))
<< "Png sizes differ";
sapi::v::Array<uint8_t> sapi_png_array2(sapi_pngsize2.GetValue());
sapi_png_array2.SetRemote(sapi_png_ptr2.GetValue());
ASSERT_THAT(sandbox.TransferFromSandboxee(&sapi_png_array2), IsOk())
<< "Error during transfer from sandboxee";
sapi::v::IntBase<uint8_t*> sapi_png_ptr3(0);
SAPI_ASSERT_OK_AND_ASSIGN(
result,
api.lodepng_decode32(sapi_png_ptr3.PtrBoth(), sapi_width.PtrBoth(),
sapi_height.PtrBoth(), sapi_png_array2.PtrBefore(),
sapi_pngsize2.GetValue()));
ASSERT_THAT(result, Eq(0)) << "Unexpected result from decode32 call";
EXPECT_THAT(sapi_width.GetValue(), Eq(kWidth)) << "Widths differ";
EXPECT_THAT(sapi_height.GetValue(), Eq(kHeight)) << "Heights differ";
sapi::v::Array<uint8_t> sapi_pixels(kImgLen);
sapi_pixels.SetRemote(sapi_png_ptr3.GetValue());
ASSERT_THAT(sandbox.TransferFromSandboxee(&sapi_pixels), IsOk())
<< "Error during transfer from sandboxee";
EXPECT_THAT(absl::equal(image.begin(), image.end(), sapi_pixels.GetData(),
sapi_pixels.GetData() + kImgLen),
IsTrue())
<< "Values differ";
EXPECT_THAT(sandbox.rpc_channel()->Free(sapi_png_ptr.GetValue()), IsOk());
EXPECT_THAT(sandbox.rpc_channel()->Free(sapi_png_ptr2.GetValue()), IsOk());
EXPECT_THAT(sandbox.rpc_channel()->Free(sapi_png_ptr3.GetValue()), IsOk());
EXPECT_THAT(sapi::file_util::fileops::DeleteRecursively(images_path),
IsTrue())
<< "Temporary directory could not be deleted";
}
} // namespace