mirror of
https://github.com/google/sandboxed-api.git
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138 lines
4.4 KiB
C++
138 lines
4.4 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <linux/futex.h>
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#include <syscall.h>
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#include <uv.h>
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#include "gtest/gtest.h"
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#include "sandboxed_api/util/flag.h"
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#include "sandboxed_api/util/status_matchers.h"
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#include "uv_sapi.sapi.h" // NOLINT(build/include)
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namespace {
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class UVTestOSSapiSandbox : public uv::UVSandbox {
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private:
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std::unique_ptr<sandbox2::Policy> ModifyPolicy(
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sandbox2::PolicyBuilder*) override {
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return sandbox2::PolicyBuilder()
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.AllowDynamicStartup()
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.AllowExit()
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.AllowFutexOp(FUTEX_WAKE_PRIVATE)
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.AllowGetIDs()
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.AllowMmap()
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.AllowOpen()
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.AllowWrite()
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.AllowSyscalls({__NR_connect, __NR_socket})
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.DisableNamespaces()
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.BuildOrDie();
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}
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};
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class UVTestOS : public ::testing::Test {
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protected:
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void SetUp() override {
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sandbox_ = std::make_unique<UVTestOSSapiSandbox>();
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ASSERT_THAT(sandbox_->Init(), sapi::IsOk());
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api_ = std::make_unique<uv::UVApi>(sandbox_.get());
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}
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std::unique_ptr<UVTestOSSapiSandbox> sandbox_;
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std::unique_ptr<uv::UVApi> api_;
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static constexpr size_t kBigBufLen = 4096;
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static constexpr size_t kSmallBufLen = 1;
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};
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TEST_F(UVTestOS, HomeDirBig) {
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// Get expected home directory
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char expected_homedir[kBigBufLen];
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size_t len = sizeof(expected_homedir);
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ASSERT_GE(uv_os_homedir(expected_homedir, &len), 0);
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// Get home directory from the sandbox
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sapi::v::Array<char> uv_homedir(kBigBufLen);
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uv_homedir[0] = '\0';
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sapi::v::IntBase<size_t> uv_homedir_len(kBigBufLen);
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SAPI_ASSERT_OK_AND_ASSIGN(
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int error_code,
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api_->sapi_uv_os_homedir(uv_homedir.PtrBoth(), uv_homedir_len.PtrBoth()));
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ASSERT_GE(error_code, 0);
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// Test home directory is as expected
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ASSERT_EQ(std::string{uv_homedir.GetData()}, std::string{expected_homedir});
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}
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TEST_F(UVTestOS, HomeDirSmall) {
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// Try getting expected home directory, error because array is too small
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char expected_homedir[kSmallBufLen];
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size_t len = sizeof(expected_homedir);
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int expected_error_code = uv_os_homedir(expected_homedir, &len);
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ASSERT_NE(expected_error_code, 0);
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// Try getting home directory from sandbox, error because array is too small
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sapi::v::Array<char> uv_homedir(kSmallBufLen);
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uv_homedir[0] = '\0';
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sapi::v::IntBase<size_t> uv_homedir_len(kSmallBufLen);
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SAPI_ASSERT_OK_AND_ASSIGN(
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int error_code,
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api_->sapi_uv_os_homedir(uv_homedir.PtrBoth(), uv_homedir_len.PtrBoth()));
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ASSERT_NE(error_code, 0);
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// Test error code is as expected
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ASSERT_EQ(error_code, expected_error_code);
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}
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TEST_F(UVTestOS, TmpDirBig) {
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// Get expected tmp directory
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char expected_tmpdir[kBigBufLen];
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size_t len = sizeof(expected_tmpdir);
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ASSERT_GE(uv_os_tmpdir(expected_tmpdir, &len), 0);
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// Get tmp directory from the sandbox
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sapi::v::Array<char> uv_tmpdir(kBigBufLen);
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uv_tmpdir[0] = '\0';
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sapi::v::IntBase<size_t> uv_tmpdir_len(kBigBufLen);
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SAPI_ASSERT_OK_AND_ASSIGN(
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int error_code,
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api_->sapi_uv_os_tmpdir(uv_tmpdir.PtrBoth(), uv_tmpdir_len.PtrBoth()));
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ASSERT_GE(error_code, 0);
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// Test tmp directory is as expected
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ASSERT_EQ(std::string{uv_tmpdir.GetData()}, std::string{expected_tmpdir});
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}
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TEST_F(UVTestOS, TmpDirSmall) {
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// Try getting expected tmp directory, error because array is too small
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char expected_tmpdir[kSmallBufLen];
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size_t len = sizeof(expected_tmpdir);
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int expected_error_code = uv_os_tmpdir(expected_tmpdir, &len);
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ASSERT_NE(expected_error_code, 0);
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// Try getting tmp directory from sandbox, error because array is too small
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sapi::v::Array<char> uv_tmpdir(kSmallBufLen);
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uv_tmpdir[0] = '\0';
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sapi::v::IntBase<size_t> uv_tmpdir_len(kSmallBufLen);
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SAPI_ASSERT_OK_AND_ASSIGN(
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int error_code,
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api_->sapi_uv_os_tmpdir(uv_tmpdir.PtrBoth(), uv_tmpdir_len.PtrBoth()));
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ASSERT_NE(error_code, 0);
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// Test error code is as expected
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ASSERT_EQ(error_code, expected_error_code);
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}
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} // namespace
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