mirror of
https://github.com/google/sandboxed-api.git
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added the same functionality in the sandboxed file as in the unit tests
This commit is contained in:
Andrei Medar
parent
fd73a06c30
commit
c13895e5a8
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@ -15,6 +15,7 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <cstdlib>
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#include <filesystem>
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#include <iostream>
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@ -27,70 +28,193 @@ ABSL_DECLARE_FLAG(string, sandbox2_danger_danger_permit_all_and_log);
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ABSL_FLAG(string, images_path, std::filesystem::current_path().string(),
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"path to the folder containing test images");
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// takes a png image (f1), decodes it and ecodes it into f2.
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// can be viewed as copying f1 into f2. This function has a basic usage
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// of the decode and encode functions.
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void decode_and_encode32(SapiLodepngSandbox &sandbox, LodepngApi &api,
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const std::string &f1, const std::string &f2) {
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sapi::v::UInt width(0), height(0);
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sapi::v::ConstCStr filename1(f1.c_str()), filename2(f2.c_str());
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absl::Status ret;
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// // takes a png image (f1), decodes it and ecodes it into f2.
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// // can be viewed as copying f1 into f2. This function has a basic usage
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// // of the decode and encode functions.
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// void decode_and_encode32(SapiLodepngSandbox &sandbox, LodepngApi &api,
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// const std::string &f1, const std::string &f2) {
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// sapi::v::UInt width(0), height(0);
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// sapi::v::ConstCStr filename1(f1.c_str()), filename2(f2.c_str());
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// absl::Status ret;
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// in order to pass unsigned char ** to the function, we pass a variable that
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// contains the pointer.
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sapi::v::IntBase<unsigned char *> image(0);
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// // in order to pass unsigned char ** to the function, we pass a variable
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// that
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// // contains the pointer.
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// sapi::v::IntBase<unsigned char *> image(0);
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if (!api.lodepng_decode32_file(image.PtrBoth(), width.PtrBoth(),
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height.PtrBoth(), filename1.PtrBefore())
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.ok()) {
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std::cerr << "decode failed" << std::endl;
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exit(1);
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}
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// if (!api.lodepng_decode32_file(image.PtrBoth(), width.PtrBoth(),
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// height.PtrBoth(), filename1.PtrBefore())
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// .ok()) {
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// std::cerr << "decode failed" << std::endl;
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// exit(1);
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// }
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// after the function is called, we need to access the data stored at the
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// address to which the previous variable points. To do that, we have to
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// transfer the data from the sandbox memory to this process's memory.
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sapi::v::RemotePtr remote_out_ptr(reinterpret_cast<void *>(image.GetValue()));
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sapi::v::Array<unsigned char> out_img(width.GetValue() * height.GetValue());
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out_img.SetRemote(remote_out_ptr.GetValue());
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// // after the function is called, we need to access the data stored at the
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// // address to which the previous variable points. To do that, we have to
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// // transfer the data from the sandbox memory to this process's memory.
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// sapi::v::RemotePtr remote_out_ptr(reinterpret_cast<void
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// *>(image.GetValue())); sapi::v::Array<unsigned char>
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// out_img(width.GetValue() * height.GetValue());
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// out_img.SetRemote(remote_out_ptr.GetValue());
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if (!sandbox.TransferFromSandboxee(&out_img).ok()) {
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std::cerr << "Transfer From Sandboxee failed" << std::endl;
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exit(1);
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}
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// if (!sandbox.TransferFromSandboxee(&out_img).ok()) {
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// std::cerr << "Transfer From Sandboxee failed" << std::endl;
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// exit(1);
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// }
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// now the values are available at out_img.GetData()
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// // now the values are available at out_img.GetData()
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// when calling the encoding function, we need only an unsigned char *
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// (instead of **) so we can simply use the sapi::v::Array defined before
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// (PtrBefore will give us a pointer).
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if (!api.lodepng_encode32_file(filename2.PtrBefore(), out_img.PtrBefore(),
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width.GetValue(), height.GetValue())
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.ok()) {
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std::cerr << "encode failed" << std::endl;
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exit(1);
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}
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// // when calling the encoding function, we need only an unsigned char *
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// // (instead of **) so we can simply use the sapi::v::Array defined before
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// // (PtrBefore will give us a pointer).
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// if (!api.lodepng_encode32_file(filename2.PtrBefore(), out_img.PtrBefore(),
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// width.GetValue(), height.GetValue())
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// .ok()) {
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// std::cerr << "encode failed" << std::endl;
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// exit(1);
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// }
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// Since in this function we do not actually used the pixels, we could simply
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// call the encode function with the pointer from before (the remote pointer,
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// since the memory has already been allocated on the sandboxed process).
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// However, most of the use cases of this library require accessing the pixels
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// which is why the solution in which data is transferred around is used.
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}
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// // Since in this function we do not actually used the pixels, we could
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// simply
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// // call the encode function with the pointer from before (the remote
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// pointer,
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// // since the memory has already been allocated on the sandboxed process).
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// // However, most of the use cases of this library require accessing the
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// pixels
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// // which is why the solution in which data is transferred around is used.
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// }
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// this seems to not work as intended at the moment
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void test2(SapiLodepngSandbox &sandbox, LodepngApi &api,
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const std::string &images_path) {
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// srand(time(NULL)); // maybe use something else
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// int width = 1024, height = 1024;
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// // this seems to not work as intended at the moment
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// void test2(SapiLodepngSandbox &sandbox, LodepngApi &api,
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// const std::string &images_path) {
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// // srand(time(NULL)); // maybe use something else
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// // int width = 1024, height = 1024;
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// unsigned int width = 512, height = 512;
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// unsigned char *image = (unsigned char *)malloc(width * height * 4);
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// // for (int i = 0; i < width * height; ++i) {
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// // image[i] = rand() % 256;
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// // }
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// for (int y = 0; y < height; y++) {
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// for (int x = 0; x < width; x++) {
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// image[4 * width * y + 4 * x + 0] = 255 * !(x & y);
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// image[4 * width * y + 4 * x + 1] = x ^ y;
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// image[4 * width * y + 4 * x + 2] = x | y;
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// image[4 * width * y + 4 * x + 3] = 255;
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// }
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// }
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// sapi::v::Array<unsigned char> image_(image, width * height * 4);
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// sapi::v::UInt width_(width), height_(height);
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// std::string filename = images_path + "/out/ok2.png";
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// sapi::v::ConstCStr filename_(filename.c_str());
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// // sandbox.Allocate(&image_).IgnoreError();
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// // sandbox.TransferToSandboxee(&image_).IgnoreError();
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// api.lodepng_encode32_file(filename_.PtrBefore(), image_.PtrBefore(),
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// width_.GetValue(), height_.GetValue())
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// .IgnoreError();
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// free(image);
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// }
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// // compares the pixels of the f1 and f2 png files.
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// bool cmp_images32(SapiLodepngSandbox &sandbox, LodepngApi &api,
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// const std::string &f1, const std::string &f2) {
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// std::cout << "COMPARING IMAGES " << basename(f1.c_str()) << " --- "
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// << basename(f2.c_str()) << std::endl;
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// sapi::v::UInt width1, height1, width2, height2;
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// sapi::v::ConstCStr filename1(f1.c_str()), filename2(f2.c_str());
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// sapi::v::IntBase<unsigned char *> image1_ptr(0), image2_ptr(0);
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// // absl::Status ret;
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// if (!api.lodepng_decode32_file(image1_ptr.PtrBoth(), width1.PtrBoth(),
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// height1.PtrBoth(), filename1.PtrBefore())
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// .ok()) {
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// std::cerr << "decode failed" << std::endl;
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// exit(1);
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// }
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// if (!api.lodepng_decode32_file(image2_ptr.PtrBoth(), width2.PtrBoth(),
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// height2.PtrBoth(), filename2.PtrBefore())
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// .ok()) {
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// std::cerr << "decode failed" << std::endl;
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// exit(1);
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// }
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// sapi::v::RemotePtr remote_out_ptr1(
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// reinterpret_cast<void *>(image1_ptr.GetValue()));
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// sapi::v::Array<char> pixels1(width1.GetValue() * height1.GetValue());
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// pixels1.SetRemote(remote_out_ptr1.GetValue());
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// if (!sandbox.TransferFromSandboxee(&pixels1).ok()) {
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// std::cerr << "Transfer From Sandboxee failed" << std::endl;
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// exit(1);
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// }
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// sapi::v::RemotePtr remote_out_ptr2(
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// reinterpret_cast<void *>(image2_ptr.GetValue()));
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// sapi::v::Array<char> pixels2(width2.GetValue() * height2.GetValue());
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// pixels2.SetRemote(remote_out_ptr2.GetValue());
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// if (!sandbox.TransferFromSandboxee(&pixels2).ok()) {
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// std::cerr << "Transfer From Sandboxee failed" << std::endl;
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// exit(1);
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// }
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// if (width1.GetValue() != width2.GetValue() ||
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// height1.GetValue() != height2.GetValue()) {
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// std::cerr << "DIMENSIONS DIFFER\n";
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// return false;
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// }
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// for (size_t i = 0; i < width1.GetValue() * height1.GetValue(); ++i) {
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// if (pixels1.GetData()[i] != pixels2.GetData()[i]) {
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// std::cerr << "PIXELS DIFFER AT i = " << i << std::endl;
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// return false;
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// }
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// }
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// return true;
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// }
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// // this test simply copies the png from filename1 to filename2 and filename3
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// // and then decodes those 2 files and compares the pixels. If those pixels
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// are
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// // equal, then encoding and decoding worked.
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// void test1(SapiLodepngSandbox &sandbox, LodepngApi &api,
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// const std::string &images_path) {
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// std::string filename1 = images_path + "/test1.png";
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// std::string filename2 = images_path + "/out/test1_1out.png";
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// std::string filename3 = images_path + "/out/test1_2out.png";
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// decode_and_encode32(sandbox, api, filename1, filename2);
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// decode_and_encode32(sandbox, api, filename1, filename3);
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// if (!cmp_images32(sandbox, api, filename1, filename2)) {
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// std::cout << "files are different" << std::endl;
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// } else {
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// std::cout << "files are not different" << std::endl;
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// }
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// if (!cmp_images32(sandbox, api, filename3, filename2)) {
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// std::cout << "files are different" << std::endl;
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// } else {
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// std::cout << "files are not different" << std::endl;
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// }
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// }
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bool generate_one_step(SapiLodepngSandbox &sandbox, LodepngApi &api,
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const std::string &images_path) {
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unsigned int width = 512, height = 512;
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unsigned char *image = (unsigned char *)malloc(width * height * 4);
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// for (int i = 0; i < width * height; ++i) {
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// image[i] = rand() % 256;
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// }
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if (image == NULL) {
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return false;
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}
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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for (int y = 0; y < height; ++y) {
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for (int x = 0; x < width; ++x) {
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image[4 * width * y + 4 * x + 0] = 255 * !(x & y);
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image[4 * width * y + 4 * x + 1] = x ^ y;
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image[4 * width * y + 4 * x + 2] = x | y;
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@ -98,107 +222,196 @@ void test2(SapiLodepngSandbox &sandbox, LodepngApi &api,
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}
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}
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sapi::v::Array<unsigned char> image_(image, width * height * 4);
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sapi::v::UInt width_(width), height_(height);
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std::string filename = images_path + "/out/ok2.png";
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sapi::v::ConstCStr filename_(filename.c_str());
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// encode the image
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sapi::v::Array<unsigned char> sapi_image(image, width * height * 4);
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sapi::v::UInt sapi_width(width), sapi_height(height);
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std::string filename = images_path + "/out_generated1.png";
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sapi::v::ConstCStr sapi_filename(filename.c_str());
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// sandbox.Allocate(&image_).IgnoreError();
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// sandbox.TransferToSandboxee(&image_).IgnoreError();
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sapi::StatusOr<unsigned int> result = api.lodepng_encode32_file(
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sapi_filename.PtrBefore(), sapi_image.PtrBefore(), sapi_width.GetValue(),
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sapi_height.GetValue());
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api.lodepng_encode32_file(filename_.PtrBefore(), image_.PtrBefore(),
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width_.GetValue(), height_.GetValue())
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.IgnoreError();
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free(image);
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}
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// compares the pixels of the f1 and f2 png files.
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bool cmp_images32(SapiLodepngSandbox &sandbox, LodepngApi &api,
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const std::string &f1, const std::string &f2) {
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std::cout << "COMPARING IMAGES " << basename(f1.c_str()) << " --- "
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<< basename(f2.c_str()) << std::endl;
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sapi::v::UInt width1, height1, width2, height2;
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sapi::v::ConstCStr filename1(f1.c_str()), filename2(f2.c_str());
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sapi::v::IntBase<unsigned char *> image1_ptr(0), image2_ptr(0);
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// absl::Status ret;
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if (!api.lodepng_decode32_file(image1_ptr.PtrBoth(), width1.PtrBoth(),
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height1.PtrBoth(), filename1.PtrBefore())
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.ok()) {
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std::cerr << "decode failed" << std::endl;
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exit(1);
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}
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if (!api.lodepng_decode32_file(image2_ptr.PtrBoth(), width2.PtrBoth(),
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height2.PtrBoth(), filename2.PtrBefore())
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.ok()) {
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std::cerr << "decode failed" << std::endl;
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exit(1);
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}
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sapi::v::RemotePtr remote_out_ptr1(
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reinterpret_cast<void *>(image1_ptr.GetValue()));
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sapi::v::Array<char> pixels1(width1.GetValue() * height1.GetValue());
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pixels1.SetRemote(remote_out_ptr1.GetValue());
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if (!sandbox.TransferFromSandboxee(&pixels1).ok()) {
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std::cerr << "Transfer From Sandboxee failed" << std::endl;
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exit(1);
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}
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sapi::v::RemotePtr remote_out_ptr2(
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reinterpret_cast<void *>(image2_ptr.GetValue()));
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sapi::v::Array<char> pixels2(width2.GetValue() * height2.GetValue());
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pixels2.SetRemote(remote_out_ptr2.GetValue());
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if (!sandbox.TransferFromSandboxee(&pixels2).ok()) {
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std::cerr << "Transfer From Sandboxee failed" << std::endl;
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exit(1);
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}
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if (width1.GetValue() != width2.GetValue() ||
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height1.GetValue() != height2.GetValue()) {
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std::cerr << "DIMENSIONS DIFFER\n";
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if (!result.ok() || result.value()) {
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return false;
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}
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for (size_t i = 0; i < width1.GetValue() * height1.GetValue(); ++i) {
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if (pixels1.GetData()[i] != pixels2.GetData()[i]) {
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std::cerr << "PIXELS DIFFER AT i = " << i << std::endl;
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// after the image has been encoded, decode it to check that the
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// pixel values are the same
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sapi::v::UInt sapi_width2, sapi_height2;
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sapi::v::IntBase<unsigned char *> sapi_image_ptr(0);
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result = api.lodepng_decode32_file(
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sapi_image_ptr.PtrBoth(), sapi_width2.PtrBoth(), sapi_height2.PtrBoth(),
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sapi_filename.PtrBefore());
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if (!result.ok() || result.value()) {
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return false;
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}
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if (sapi_width2.GetValue() != width || sapi_height2.GetValue() != height) {
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return false;
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}
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// the pixels have been allocated inside the sandboxed process
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// memory, so we need to transfer them to this process.
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// Transferring the memory has the following steps:
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// 1) define a RemotePtr variable
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sapi::v::RemotePtr sapi_remote_out_ptr(
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reinterpret_cast<void *>(sapi_image_ptr.GetValue()));
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sapi::v::Array<unsigned char> sapi_pixels(sapi_width2.GetValue() *
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sapi_height2.GetValue() * 4);
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sapi_pixels.SetRemote(sapi_remote_out_ptr.GetValue());
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if (!sandbox.TransferFromSandboxee(&sapi_pixels).ok()) {
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return false;
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}
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// after the memory has been transferred, we can access it
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// using the GetData function
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unsigned char *pixels_ptr = sapi_pixels.GetData();
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// now, we can compare the values
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for (size_t i = 0; i < width * height * 4; ++i) {
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if (pixels_ptr[i] != image[i]) {
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return false;
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}
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}
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free(image);
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return true;
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}
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// this test simply copies the png from filename1 to filename2 and filename3
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// and then decodes those 2 files and compares the pixels. If those pixels are
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// equal, then encoding and decoding worked.
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void test1(SapiLodepngSandbox &sandbox, LodepngApi &api,
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const std::string &images_path) {
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std::string filename1 = images_path + "/test1.png";
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std::string filename2 = images_path + "/out/test1_1out.png";
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std::string filename3 = images_path + "/out/test1_2out.png";
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bool generate_two_steps(SapiLodepngSandbox &sandbox, LodepngApi &api,
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const std::string &images_path) {
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// generate the values
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unsigned int width = 512, height = 512;
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unsigned char *image = (unsigned char *)malloc(width * height * 4);
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|
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decode_and_encode32(sandbox, api, filename1, filename2);
|
||||
decode_and_encode32(sandbox, api, filename1, filename3);
|
||||
|
||||
if (!cmp_images32(sandbox, api, filename1, filename2)) {
|
||||
std::cout << "files are different" << std::endl;
|
||||
} else {
|
||||
std::cout << "files are not different" << std::endl;
|
||||
if (image == NULL) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!cmp_images32(sandbox, api, filename3, filename2)) {
|
||||
std::cout << "files are different" << std::endl;
|
||||
} else {
|
||||
std::cout << "files are not different" << std::endl;
|
||||
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, width * height * 4);
|
||||
sapi::v::UInt sapi_width(width), sapi_height(height);
|
||||
std::string filename = images_path + "/out_generated2.png";
|
||||
sapi::v::ConstCStr sapi_filename(filename.c_str());
|
||||
|
||||
sapi::v::ULLong sapi_pngsize;
|
||||
sapi::v::IntBase<unsigned char *> sapi_png_ptr(0);
|
||||
|
||||
// encode it into memory
|
||||
|
||||
sapi::StatusOr<unsigned int> result = api.lodepng_encode32(
|
||||
sapi_png_ptr.PtrBoth(), sapi_pngsize.PtrBoth(), sapi_image.PtrBefore(),
|
||||
sapi_width.GetValue(), sapi_height.GetValue());
|
||||
|
||||
if (!result.ok() || result.value()) {
|
||||
return false;
|
||||
}
|
||||
// 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(
|
||||
reinterpret_cast<void *>(sapi_png_ptr.GetValue()));
|
||||
sapi::v::Array<unsigned char> sapi_png_array(sapi_pngsize.GetValue());
|
||||
|
||||
sapi_png_array.SetRemote(sapi_remote_out_ptr.GetValue());
|
||||
|
||||
if (!sandbox.TransferFromSandboxee(&sapi_png_array).ok()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// write the image into the file (from memory)
|
||||
result =
|
||||
api.lodepng_save_file(sapi_png_array.PtrBefore(), sapi_pngsize.GetValue(),
|
||||
sapi_filename.PtrBefore());
|
||||
|
||||
if (!result.ok() || result.value()) {
|
||||
return false;
|
||||
}
|
||||
// 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
|
||||
result =
|
||||
api.lodepng_load_file(sapi_png_ptr2.PtrBoth(), sapi_pngsize2.PtrBoth(),
|
||||
sapi_filename.PtrBefore());
|
||||
if (!result.ok() || result.value()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (sapi_pngsize.GetValue() != sapi_pngsize2.GetValue()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// transfer the png array
|
||||
sapi::v::RemotePtr sapi_remote_out_ptr2(
|
||||
reinterpret_cast<void *>(sapi_png_ptr2.GetValue()));
|
||||
sapi::v::Array<unsigned char> sapi_png_array2(sapi_pngsize2.GetValue());
|
||||
|
||||
sapi_png_array2.SetRemote(sapi_remote_out_ptr2.GetValue());
|
||||
|
||||
if (!sandbox.TransferFromSandboxee(&sapi_png_array2).ok()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// after the file is loaded, decode it so we have access to the values
|
||||
// directly
|
||||
sapi::v::IntBase<unsigned char *> sapi_png_ptr3(0);
|
||||
result = api.lodepng_decode32(
|
||||
sapi_png_ptr3.PtrBoth(), sapi_width2.PtrBoth(), sapi_height2.PtrBoth(),
|
||||
sapi_png_array2.PtrBefore(), sapi_pngsize2.GetValue());
|
||||
|
||||
if (!result.ok() || result.value()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (sapi_width2.GetValue() != width || sapi_height2.GetValue() != height) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// transfer the pixels so they can be used
|
||||
sapi::v::RemotePtr sapi_remote_out_ptr3(
|
||||
reinterpret_cast<void *>(sapi_png_ptr3.GetValue()));
|
||||
sapi::v::Array<unsigned char> sapi_pixels(sapi_width2.GetValue() *
|
||||
sapi_height2.GetValue() * 4);
|
||||
|
||||
sapi_pixels.SetRemote(sapi_remote_out_ptr3.GetValue());
|
||||
|
||||
if (!sandbox.TransferFromSandboxee(&sapi_pixels).ok()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
unsigned char *pixels_ptr = sapi_pixels.GetData();
|
||||
|
||||
// compare values
|
||||
for (size_t i = 0; i < width * height * 4; ++i) {
|
||||
if (pixels_ptr[i] != image[i]) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
free(image);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
// at the moment there are no arguments when running
|
||||
int main(int argc, char *argv[]) {
|
||||
gflags::ParseCommandLineFlags(&argc, &argv, true);
|
||||
absl::Status ret;
|
||||
|
|
@ -217,7 +430,17 @@ int main(int argc, char *argv[]) {
|
|||
|
||||
LodepngApi api(&sandbox);
|
||||
|
||||
test1(sandbox, api, images_path);
|
||||
test2(sandbox, api, images_path);
|
||||
return 0;
|
||||
if (generate_one_step(sandbox, api, images_path)) {
|
||||
std::cout << "first example ok" << std::endl;
|
||||
} else {
|
||||
std::cout << "first example did not work properly" << std::endl;
|
||||
}
|
||||
|
||||
if (generate_two_steps(sandbox, api, images_path)) {
|
||||
std::cout << "second example ok" << std::endl;
|
||||
} else {
|
||||
std::cout << "second example did not work properly" << std::endl;
|
||||
}
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
|
|
@ -12,7 +12,7 @@
|
|||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
#include <glog/logging.h>
|
||||
// #include <glog/logging.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include <filesystem>
|
||||
|
|
@ -26,8 +26,7 @@
|
|||
namespace {
|
||||
|
||||
// use the current path
|
||||
std::string images_path =
|
||||
std::filesystem::current_path().string();
|
||||
std::string images_path = std::filesystem::current_path().string();
|
||||
|
||||
TEST(initSandbox, basic) {
|
||||
SapiLodepngSandbox sandbox(images_path);
|
||||
|
|
@ -167,7 +166,6 @@ TEST(generate_image, encode_decode_compare_two_step) {
|
|||
api.lodepng_save_file(sapi_png_array.PtrBefore(), sapi_pngsize.GetValue(),
|
||||
sapi_filename.PtrBefore());
|
||||
|
||||
|
||||
ASSERT_TRUE(result.ok());
|
||||
ASSERT_EQ(result.value(), 0);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user