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// 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 <linux/futex.h>
#include <syscall.h>
#include <uv.h>
#include "gtest/gtest.h"
#include "absl/flags/flag.h"
#include "sandboxed_api/util/status_matchers.h"
#include "uv_sapi.sapi.h" // NOLINT(build/include)
namespace {
class UVTestOSSapiSandbox : public uv::UVSandbox {
private:
std::unique_ptr<sandbox2::Policy> ModifyPolicy(
sandbox2::PolicyBuilder*) override {
return sandbox2::PolicyBuilder()
.AllowDynamicStartup()
.AllowExit()
.AllowFutexOp(FUTEX_WAKE_PRIVATE)
.AllowGetIDs()
.AllowMmap()
.AllowOpen()
.AllowWrite()
.AllowSyscalls({__NR_connect, __NR_socket})
.DisableNamespaces()
.BuildOrDie();
}
};
class UVTestOS : public ::testing::Test {
protected:
void SetUp() override {
sandbox_ = std::make_unique<UVTestOSSapiSandbox>();
ASSERT_THAT(sandbox_->Init(), sapi::IsOk());
api_ = std::make_unique<uv::UVApi>(sandbox_.get());
}
std::unique_ptr<UVTestOSSapiSandbox> sandbox_;
std::unique_ptr<uv::UVApi> api_;
static constexpr size_t kBigBufLen = 4096;
static constexpr size_t kSmallBufLen = 1;
};
TEST_F(UVTestOS, HomeDirBig) {
// Get expected home directory
char expected_homedir[kBigBufLen];
size_t len = sizeof(expected_homedir);
ASSERT_GE(uv_os_homedir(expected_homedir, &len), 0);
// Get home directory from the sandbox
sapi::v::Array<char> uv_homedir(kBigBufLen);
uv_homedir[0] = '\0';
sapi::v::IntBase<size_t> uv_homedir_len(kBigBufLen);
SAPI_ASSERT_OK_AND_ASSIGN(
int error_code,
api_->sapi_uv_os_homedir(uv_homedir.PtrBoth(), uv_homedir_len.PtrBoth()));
ASSERT_GE(error_code, 0);
// Test home directory is as expected
ASSERT_EQ(std::string{uv_homedir.GetData()}, std::string{expected_homedir});
}
TEST_F(UVTestOS, HomeDirSmall) {
// Try getting expected home directory, error because array is too small
char expected_homedir[kSmallBufLen];
size_t len = sizeof(expected_homedir);
int expected_error_code = uv_os_homedir(expected_homedir, &len);
ASSERT_NE(expected_error_code, 0);
// Try getting home directory from sandbox, error because array is too small
sapi::v::Array<char> uv_homedir(kSmallBufLen);
uv_homedir[0] = '\0';
sapi::v::IntBase<size_t> uv_homedir_len(kSmallBufLen);
SAPI_ASSERT_OK_AND_ASSIGN(
int error_code,
api_->sapi_uv_os_homedir(uv_homedir.PtrBoth(), uv_homedir_len.PtrBoth()));
ASSERT_NE(error_code, 0);
// Test error code is as expected
ASSERT_EQ(error_code, expected_error_code);
}
TEST_F(UVTestOS, TmpDirBig) {
// Get expected tmp directory
char expected_tmpdir[kBigBufLen];
size_t len = sizeof(expected_tmpdir);
ASSERT_GE(uv_os_tmpdir(expected_tmpdir, &len), 0);
// Get tmp directory from the sandbox
sapi::v::Array<char> uv_tmpdir(kBigBufLen);
uv_tmpdir[0] = '\0';
sapi::v::IntBase<size_t> uv_tmpdir_len(kBigBufLen);
SAPI_ASSERT_OK_AND_ASSIGN(
int error_code,
api_->sapi_uv_os_tmpdir(uv_tmpdir.PtrBoth(), uv_tmpdir_len.PtrBoth()));
ASSERT_GE(error_code, 0);
// Test tmp directory is as expected
ASSERT_EQ(std::string{uv_tmpdir.GetData()}, std::string{expected_tmpdir});
}
TEST_F(UVTestOS, TmpDirSmall) {
// Try getting expected tmp directory, error because array is too small
char expected_tmpdir[kSmallBufLen];
size_t len = sizeof(expected_tmpdir);
int expected_error_code = uv_os_tmpdir(expected_tmpdir, &len);
ASSERT_NE(expected_error_code, 0);
// Try getting tmp directory from sandbox, error because array is too small
sapi::v::Array<char> uv_tmpdir(kSmallBufLen);
uv_tmpdir[0] = '\0';
sapi::v::IntBase<size_t> uv_tmpdir_len(kSmallBufLen);
SAPI_ASSERT_OK_AND_ASSIGN(
int error_code,
api_->sapi_uv_os_tmpdir(uv_tmpdir.PtrBoth(), uv_tmpdir_len.PtrBoth()));
ASSERT_NE(error_code, 0);
// Test error code is as expected
ASSERT_EQ(error_code, expected_error_code);
}
} // namespace
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