132 lines
4.4 KiB
C++
132 lines
4.4 KiB
C++
// Copyright 2019 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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// https://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 "sandboxed_api/sandbox2/ipc.h"
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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#include "gtest/gtest.h"
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#include "sandboxed_api/sandbox2/comms.h"
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#include "sandboxed_api/sandbox2/executor.h"
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#include "sandboxed_api/sandbox2/policy.h"
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#include "sandboxed_api/sandbox2/result.h"
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#include "sandboxed_api/sandbox2/sandbox2.h"
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#include "sandboxed_api/testing.h"
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#include "sandboxed_api/util/status_matchers.h"
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namespace sandbox2 {
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namespace {
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using ::sapi::CreateDefaultPermissiveTestPolicy;
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using ::sapi::GetTestSourcePath;
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constexpr int kPreferredIpcFd = 812;
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class IPCTest : public testing::Test,
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public testing::WithParamInterface<int> {};
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// This test verifies that mapping fds by name works if the sandbox is enabled
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// before execve.
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TEST_P(IPCTest, MapFDByNamePreExecve) {
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const int fd = GetParam();
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const std::string path = GetTestSourcePath("sandbox2/testcases/ipc");
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std::vector<std::string> args = {path, "1", std::to_string(fd)};
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auto executor = std::make_unique<Executor>(path, args);
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Comms comms(executor->ipc()->ReceiveFd(fd, "ipc_test"));
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SAPI_ASSERT_OK_AND_ASSIGN(auto policy,
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CreateDefaultPermissiveTestPolicy(path).TryBuild());
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Sandbox2 s2(std::move(executor), std::move(policy));
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s2.RunAsync();
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ASSERT_TRUE(comms.SendString("hello"));
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std::string resp;
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ASSERT_TRUE(s2.comms()->RecvString(&resp));
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ASSERT_EQ(resp, "start");
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ASSERT_TRUE(s2.comms()->SendString("started"));
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ASSERT_TRUE(comms.RecvString(&resp));
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ASSERT_EQ(resp, "world");
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ASSERT_TRUE(s2.comms()->RecvString(&resp));
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ASSERT_EQ(resp, "finish");
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ASSERT_TRUE(s2.comms()->SendString("finished"));
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auto result = s2.AwaitResult();
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ASSERT_EQ(result.final_status(), Result::OK);
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ASSERT_EQ(result.reason_code(), 0);
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}
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// This test verifies that mapping fds by name works if SandboxMeHere() is
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// called by the sandboxee.
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TEST_P(IPCTest, MapFDByNamePostExecve) {
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SKIP_SANITIZERS_AND_COVERAGE;
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const int fd = GetParam();
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const std::string path = GetTestSourcePath("sandbox2/testcases/ipc");
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std::vector<std::string> args = {path, "2", std::to_string(fd)};
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auto executor = std::make_unique<Executor>(path, args);
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executor->set_enable_sandbox_before_exec(false);
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Comms comms(executor->ipc()->ReceiveFd(fd, "ipc_test"));
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SAPI_ASSERT_OK_AND_ASSIGN(auto policy,
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CreateDefaultPermissiveTestPolicy(path).TryBuild());
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Sandbox2 s2(std::move(executor), std::move(policy));
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s2.RunAsync();
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ASSERT_TRUE(comms.SendString("hello"));
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std::string resp;
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ASSERT_TRUE(s2.comms()->RecvString(&resp));
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ASSERT_EQ(resp, "start");
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ASSERT_TRUE(s2.comms()->SendString("started"));
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ASSERT_TRUE(comms.RecvString(&resp));
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ASSERT_EQ(resp, "world");
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ASSERT_TRUE(s2.comms()->RecvString(&resp));
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ASSERT_EQ(resp, "finish");
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ASSERT_TRUE(s2.comms()->SendString("finished"));
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auto result = s2.AwaitResult();
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ASSERT_EQ(result.final_status(), Result::OK);
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ASSERT_EQ(result.reason_code(), 0);
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}
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TEST(IPCTest, NoMappedFDsPreExecve) {
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SKIP_SANITIZERS_AND_COVERAGE;
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const std::string path = GetTestSourcePath("sandbox2/testcases/ipc");
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std::vector<std::string> args = {path, "3"};
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auto executor = std::make_unique<Executor>(path, args);
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SAPI_ASSERT_OK_AND_ASSIGN(auto policy,
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CreateDefaultPermissiveTestPolicy(path).TryBuild());
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Sandbox2 s2(std::move(executor), std::move(policy));
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auto result = s2.Run();
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ASSERT_EQ(result.final_status(), Result::OK);
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ASSERT_EQ(result.reason_code(), 0);
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}
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INSTANTIATE_TEST_SUITE_P(NormalFds, IPCTest, testing::Values(kPreferredIpcFd));
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INSTANTIATE_TEST_SUITE_P(RestrictedFds, IPCTest,
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testing::Values(Comms::kSandbox2ClientCommsFD,
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Comms::kSandbox2TargetExecFD));
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} // namespace
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} // namespace sandbox2
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