mirror of
https://github.com/google/sandboxed-api.git
synced 2024-03-22 13:11:30 +08:00
225 lines
8.3 KiB
C++
225 lines
8.3 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
|
|
//
|
|
// 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 <filesystem>
|
|
|
|
#include "gtest/gtest.h"
|
|
#include "sandbox.h"
|
|
#include "sandboxed_api/util/status_matchers.h"
|
|
|
|
using sapi::IsOk;
|
|
using testing::Eq;
|
|
using testing::NotNull;
|
|
|
|
namespace {
|
|
|
|
// use the current path
|
|
const std::string images_path = std::filesystem::current_path().string();
|
|
|
|
TEST(initSandbox, basic) {
|
|
SapiLodepngSandbox sandbox(images_path);
|
|
ASSERT_THAT(sandbox.Init(), IsOk()) << "Error during sandbox init";
|
|
}
|
|
|
|
// generate an image, encode it, decode it and compare the pixels with the
|
|
// initial values
|
|
TEST(generate_image, encode_decode_compare_one_step) {
|
|
SapiLodepngSandbox sandbox(images_path);
|
|
ASSERT_THAT(sandbox.Init(), IsOk()) << "Error during sandbox init";
|
|
LodepngApi api(&sandbox);
|
|
|
|
// generate the values
|
|
constexpr unsigned int width = 512, height = 512,
|
|
img_len = width * height * 4;
|
|
std::vector<unsigned char> image(img_len);
|
|
|
|
for (int y = 0; y < height; ++y) {
|
|
for (int x = 0; x < width; ++x) {
|
|
image[4 * width * y + 4 * x + 0] = 255 * !(x & y);
|
|
image[4 * width * y + 4 * x + 1] = x ^ y;
|
|
image[4 * width * y + 4 * x + 2] = x | y;
|
|
image[4 * width * y + 4 * x + 3] = 255;
|
|
}
|
|
}
|
|
|
|
// encode the image
|
|
sapi::v::Array<unsigned char> sapi_image(image.data(), img_len);
|
|
sapi::v::UInt sapi_width(width), sapi_height(height);
|
|
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(), sapi_width.GetValue(),
|
|
sapi_height.GetValue()));
|
|
|
|
ASSERT_THAT(result, Eq(0)) << "Result from encode32_file not 0";
|
|
|
|
// after the image has been encoded, decode it to check that the
|
|
// pixel values are the same
|
|
sapi::v::UInt sapi_width2, sapi_height2;
|
|
sapi::v::IntBase<unsigned char *> sapi_image_ptr(0);
|
|
|
|
SAPI_ASSERT_OK_AND_ASSIGN(
|
|
result, api.lodepng_decode32_file(
|
|
sapi_image_ptr.PtrBoth(), sapi_width2.PtrBoth(),
|
|
sapi_height2.PtrBoth(), sapi_filename.PtrBefore()));
|
|
|
|
ASSERT_THAT(result, Eq(0)) << "Result from decode32_file not 0";
|
|
|
|
EXPECT_THAT(sapi_width2.GetValue(), Eq(width)) << "Widths differ";
|
|
EXPECT_THAT(sapi_height2.GetValue(), Eq(height)) << "Heights differ";
|
|
|
|
// the pixels have been allocated inside the sandboxed process
|
|
// memory, so we need to transfer them to this process.
|
|
// Transferring the memory has the following steps:
|
|
// 1) define a RemotePtr variable that holds the memory location from
|
|
// the sandboxed process
|
|
// 2) define an array with the required length
|
|
// 3) set the remote pointer for the array to specify where the memory
|
|
// that will be transferred is located
|
|
// 4) transfer the memory to this process (this step is why we need
|
|
// the pointer and the length)
|
|
sapi::v::RemotePtr sapi_remote_out_ptr(sapi_image_ptr.GetValue());
|
|
sapi::v::Array<unsigned char> sapi_pixels(img_len);
|
|
sapi_pixels.SetRemote(sapi_remote_out_ptr.GetValue());
|
|
|
|
ASSERT_THAT(sandbox.TransferFromSandboxee(&sapi_pixels), IsOk())
|
|
<< "Error during transfer from sandboxee";
|
|
|
|
// after the memory has been transferred, we can access it
|
|
// using the GetData function
|
|
unsigned char *pixels_ptr = sapi_pixels.GetData();
|
|
|
|
// now, we can compare the values
|
|
for (size_t i = 0; i < img_len; ++i) {
|
|
EXPECT_THAT(pixels_ptr[i], Eq(image[i])) << "Pixels values differ";
|
|
}
|
|
}
|
|
|
|
// 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(generate_image, encode_decode_compare_two_steps) {
|
|
SapiLodepngSandbox sandbox(images_path);
|
|
ASSERT_THAT(sandbox.Init(), IsOk()) << "Error during sandbox init";
|
|
LodepngApi api(&sandbox);
|
|
|
|
// generate the values
|
|
constexpr unsigned int width = 512, height = 512,
|
|
img_len = width * height * 4;
|
|
std::vector<unsigned char> image(img_len);
|
|
|
|
for (int y = 0; y < height; ++y) {
|
|
for (int x = 0; x < width; ++x) {
|
|
image[4 * width * y + 4 * x + 0] = 255 * !(x & y);
|
|
image[4 * width * y + 4 * x + 1] = x ^ y;
|
|
image[4 * width * y + 4 * x + 2] = x | y;
|
|
image[4 * width * y + 4 * x + 3] = 255;
|
|
}
|
|
}
|
|
|
|
// encode the image into memory first
|
|
sapi::v::Array<unsigned char> sapi_image(image.data(), img_len);
|
|
sapi::v::UInt sapi_width(width), sapi_height(height);
|
|
sapi::v::ConstCStr sapi_filename("/output/out_generated2.png");
|
|
|
|
sapi::v::ULLong sapi_pngsize;
|
|
sapi::v::IntBase<unsigned char *> sapi_png_ptr(0);
|
|
|
|
// encode it into memory
|
|
SAPI_ASSERT_OK_AND_ASSIGN(
|
|
unsigned int result,
|
|
api.lodepng_encode32(sapi_png_ptr.PtrBoth(), sapi_pngsize.PtrBoth(),
|
|
sapi_image.PtrBefore(), sapi_width.GetValue(),
|
|
sapi_height.GetValue()));
|
|
|
|
ASSERT_THAT(result, Eq(0)) << "Result from encode32 call not 0";
|
|
|
|
// the new array (pointed to by sapi_png_ptr) is allocated
|
|
// inside the sandboxed process so we need to transfer it to this
|
|
// process
|
|
sapi::v::RemotePtr sapi_remote_out_ptr(sapi_png_ptr.GetValue());
|
|
sapi::v::Array<unsigned char> sapi_png_array(sapi_pngsize.GetValue());
|
|
|
|
sapi_png_array.SetRemote(sapi_remote_out_ptr.GetValue());
|
|
|
|
ASSERT_THAT(sandbox.TransferFromSandboxee(&sapi_png_array), IsOk())
|
|
<< "Error during transfer from sandboxee";
|
|
|
|
// write the image into the file (from memory)
|
|
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)) << "Result from save_file call not 0";
|
|
|
|
// now, decode the image using the 2 steps in order to compare the values
|
|
sapi::v::UInt sapi_width2, sapi_height2;
|
|
sapi::v::IntBase<unsigned char *> sapi_png_ptr2(0);
|
|
sapi::v::ULLong sapi_pngsize2;
|
|
|
|
// load the file in memory
|
|
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)) << "Result from load_file call not 0";
|
|
|
|
EXPECT_THAT(sapi_pngsize.GetValue(), Eq(sapi_pngsize2.GetValue()))
|
|
<< "Png sizes differ";
|
|
|
|
// transfer the png array
|
|
sapi::v::RemotePtr sapi_remote_out_ptr2(sapi_png_ptr2.GetValue());
|
|
sapi::v::Array<unsigned char> sapi_png_array2(sapi_pngsize2.GetValue());
|
|
|
|
sapi_png_array2.SetRemote(sapi_remote_out_ptr2.GetValue());
|
|
|
|
ASSERT_THAT(sandbox.TransferFromSandboxee(&sapi_png_array2), IsOk())
|
|
<< "Error during transfer from sandboxee";
|
|
|
|
// after the file is loaded, decode it so we have access to the values
|
|
// directly
|
|
sapi::v::IntBase<unsigned char *> sapi_png_ptr3(0);
|
|
SAPI_ASSERT_OK_AND_ASSIGN(
|
|
result,
|
|
api.lodepng_decode32(sapi_png_ptr3.PtrBoth(), sapi_width2.PtrBoth(),
|
|
sapi_height2.PtrBoth(), sapi_png_array2.PtrBefore(),
|
|
sapi_pngsize2.GetValue()));
|
|
|
|
ASSERT_THAT(result, Eq(0)) << "Result from decode32 call not 0";
|
|
|
|
EXPECT_THAT(sapi_width2.GetValue(), Eq(width)) << "Widths differ";
|
|
EXPECT_THAT(sapi_height2.GetValue(), Eq(height)) << "Heights differ";
|
|
|
|
// transfer the pixels so they can be used
|
|
sapi::v::RemotePtr sapi_remote_out_ptr3(sapi_png_ptr3.GetValue());
|
|
sapi::v::Array<unsigned char> sapi_pixels(img_len);
|
|
|
|
sapi_pixels.SetRemote(sapi_remote_out_ptr3.GetValue());
|
|
|
|
ASSERT_THAT(sandbox.TransferFromSandboxee(&sapi_pixels), IsOk())
|
|
<< "Error during transfer from sandboxee";
|
|
|
|
unsigned char *pixels_ptr = sapi_pixels.GetData();
|
|
|
|
// compare values
|
|
for (size_t i = 0; i < img_len; ++i) {
|
|
EXPECT_THAT(pixels_ptr[i], Eq(image[i])) << "Pixel values differ";
|
|
}
|
|
}
|
|
|
|
} // namespace
|