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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include <string.h>
#include <algorithm>
#include <string>
#include <vector>
#include "base/files/file.h"
#include "base/files/file_util.h"
#include "base/memory/shared_memory.h"
#include "base/process/process_handle.h"
#include "mojo/edk/embedder/platform_shared_buffer.h"
#include "mojo/edk/test/mojo_test_base.h"
#include "mojo/public/c/system/platform_handle.h"
#include "testing/gtest/include/gtest/gtest.h"
#if defined(OS_WIN)
#include <windows.h>
#endif
#if defined(OS_POSIX)
#define SIMPLE_PLATFORM_HANDLE_TYPE MOJO_PLATFORM_HANDLE_TYPE_FILE_DESCRIPTOR
#elif defined(OS_WIN)
#define SIMPLE_PLATFORM_HANDLE_TYPE MOJO_PLATFORM_HANDLE_TYPE_WINDOWS_HANDLE
#endif
#if defined(OS_MACOSX) && !defined(OS_IOS)
#define SHARED_BUFFER_PLATFORM_HANDLE_TYPE MOJO_PLATFORM_HANDLE_TYPE_MACH_PORT
#else
#define SHARED_BUFFER_PLATFORM_HANDLE_TYPE SIMPLE_PLATFORM_HANDLE_TYPE
#endif
uint64_t PlatformHandleValueFromPlatformFile(base::PlatformFile file) {
#if defined(OS_WIN)
return reinterpret_cast<uint64_t>(file);
#else
return static_cast<uint64_t>(file);
#endif
}
base::PlatformFile PlatformFileFromPlatformHandleValue(uint64_t value) {
#if defined(OS_WIN)
return reinterpret_cast<base::PlatformFile>(value);
#else
return static_cast<base::PlatformFile>(value);
#endif
}
namespace mojo {
namespace edk {
namespace {
using PlatformWrapperTest = test::MojoTestBase;
TEST_F(PlatformWrapperTest, WrapPlatformHandle) {
// Create a temporary file and write a message to it.
base::FilePath temp_file_path;
ASSERT_TRUE(base::CreateTemporaryFile(&temp_file_path));
const std::string kMessage = "Hello, world!";
EXPECT_EQ(base::WriteFile(temp_file_path, kMessage.data(),
static_cast<int>(kMessage.size())),
static_cast<int>(kMessage.size()));
RUN_CHILD_ON_PIPE(ReadPlatformFile, h)
// Open the temporary file for reading, wrap its handle, and send it to
// the child along with the expected message to be read.
base::File file(temp_file_path,
base::File::FLAG_OPEN | base::File::FLAG_READ);
EXPECT_TRUE(file.IsValid());
MojoHandle wrapped_handle;
MojoPlatformHandle os_file;
os_file.struct_size = sizeof(MojoPlatformHandle);
os_file.type = SIMPLE_PLATFORM_HANDLE_TYPE;
os_file.value =
PlatformHandleValueFromPlatformFile(file.TakePlatformFile());
EXPECT_EQ(MOJO_RESULT_OK,
MojoWrapPlatformHandle(&os_file, &wrapped_handle));
WriteMessageWithHandles(h, kMessage, &wrapped_handle, 1);
END_CHILD()
base::DeleteFile(temp_file_path, false);
}
DEFINE_TEST_CLIENT_TEST_WITH_PIPE(ReadPlatformFile, PlatformWrapperTest, h) {
// Read a message and a wrapped file handle; unwrap the handle.
MojoHandle wrapped_handle;
std::string message = ReadMessageWithHandles(h, &wrapped_handle, 1);
MojoPlatformHandle platform_handle;
platform_handle.struct_size = sizeof(MojoPlatformHandle);
ASSERT_EQ(MOJO_RESULT_OK,
MojoUnwrapPlatformHandle(wrapped_handle, &platform_handle));
EXPECT_EQ(SIMPLE_PLATFORM_HANDLE_TYPE, platform_handle.type);
base::File file(PlatformFileFromPlatformHandleValue(platform_handle.value));
// Expect to read the same message from the file.
std::vector<char> data(message.size());
EXPECT_EQ(file.ReadAtCurrentPos(data.data(), static_cast<int>(data.size())),
static_cast<int>(data.size()));
EXPECT_TRUE(std::equal(message.begin(), message.end(), data.begin()));
}
TEST_F(PlatformWrapperTest, WrapPlatformSharedBufferHandle) {
// Allocate a new platform shared buffer and write a message into it.
const std::string kMessage = "Hello, world!";
base::SharedMemory buffer;
buffer.CreateAndMapAnonymous(kMessage.size());
CHECK(buffer.memory());
memcpy(buffer.memory(), kMessage.data(), kMessage.size());
RUN_CHILD_ON_PIPE(ReadPlatformSharedBuffer, h)
// Wrap the shared memory handle and send it to the child along with the
// expected message.
base::SharedMemoryHandle memory_handle =
base::SharedMemory::DuplicateHandle(buffer.handle());
MojoPlatformHandle os_buffer;
os_buffer.struct_size = sizeof(MojoPlatformHandle);
os_buffer.type = SHARED_BUFFER_PLATFORM_HANDLE_TYPE;
#if defined(OS_MACOSX) && !defined(OS_IOS)
os_buffer.value = static_cast<uint64_t>(memory_handle.GetMemoryObject());
#elif defined(OS_POSIX)
os_buffer.value = static_cast<uint64_t>(memory_handle.fd);
#elif defined(OS_WIN)
os_buffer.value = reinterpret_cast<uint64_t>(memory_handle.GetHandle());
#endif
MojoHandle wrapped_handle;
ASSERT_EQ(MOJO_RESULT_OK,
MojoWrapPlatformSharedBufferHandle(
&os_buffer, kMessage.size(),
MOJO_PLATFORM_SHARED_BUFFER_HANDLE_FLAG_NONE,
&wrapped_handle));
WriteMessageWithHandles(h, kMessage, &wrapped_handle, 1);
END_CHILD()
}
DEFINE_TEST_CLIENT_TEST_WITH_PIPE(ReadPlatformSharedBuffer, PlatformWrapperTest,
h) {
// Read a message and a wrapped shared buffer handle.
MojoHandle wrapped_handle;
std::string message = ReadMessageWithHandles(h, &wrapped_handle, 1);
// Check the message in the buffer
ExpectBufferContents(wrapped_handle, 0, message);
// Now unwrap the buffer and verify that the base::SharedMemoryHandle also
// works as expected.
MojoPlatformHandle os_buffer;
os_buffer.struct_size = sizeof(MojoPlatformHandle);
size_t size;
MojoPlatformSharedBufferHandleFlags flags;
ASSERT_EQ(MOJO_RESULT_OK,
MojoUnwrapPlatformSharedBufferHandle(wrapped_handle, &os_buffer,
&size, &flags));
bool read_only = flags & MOJO_PLATFORM_SHARED_BUFFER_HANDLE_FLAG_NONE;
EXPECT_FALSE(read_only);
#if defined(OS_MACOSX) && !defined(OS_IOS)
ASSERT_EQ(MOJO_PLATFORM_HANDLE_TYPE_MACH_PORT, os_buffer.type);
base::SharedMemoryHandle memory_handle(
static_cast<mach_port_t>(os_buffer.value), size,
base::GetCurrentProcId());
#elif defined(OS_POSIX)
ASSERT_EQ(MOJO_PLATFORM_HANDLE_TYPE_FILE_DESCRIPTOR, os_buffer.type);
base::SharedMemoryHandle memory_handle(static_cast<int>(os_buffer.value),
false);
#elif defined(OS_WIN)
ASSERT_EQ(MOJO_PLATFORM_HANDLE_TYPE_WINDOWS_HANDLE, os_buffer.type);
base::SharedMemoryHandle memory_handle(
reinterpret_cast<HANDLE>(os_buffer.value), base::GetCurrentProcId());
#endif
base::SharedMemory memory(memory_handle, read_only);
memory.Map(message.size());
ASSERT_TRUE(memory.memory());
EXPECT_TRUE(std::equal(message.begin(), message.end(),
static_cast<const char*>(memory.memory())));
}
TEST_F(PlatformWrapperTest, InvalidHandle) {
// Wrap an invalid platform handle and expect to unwrap the same.
MojoHandle wrapped_handle;
MojoPlatformHandle invalid_handle;
invalid_handle.struct_size = sizeof(MojoPlatformHandle);
invalid_handle.type = MOJO_PLATFORM_HANDLE_TYPE_INVALID;
EXPECT_EQ(MOJO_RESULT_OK,
MojoWrapPlatformHandle(&invalid_handle, &wrapped_handle));
EXPECT_EQ(MOJO_RESULT_OK,
MojoUnwrapPlatformHandle(wrapped_handle, &invalid_handle));
EXPECT_EQ(MOJO_PLATFORM_HANDLE_TYPE_INVALID, invalid_handle.type);
}
TEST_F(PlatformWrapperTest, InvalidArgument) {
// Try to wrap an invalid MojoPlatformHandle struct and expect an error.
MojoHandle wrapped_handle;
MojoPlatformHandle platform_handle;
platform_handle.struct_size = 0;
EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
MojoWrapPlatformHandle(&platform_handle, &wrapped_handle));
}
} // namespace
} // namespace edk
} // namespace mojo
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