sandboxed-api/sandboxed_api/sandbox2/examples/crc4/crc4sandbox_test.cc

88 lines
2.5 KiB
C++
Raw Normal View History

// Copyright 2019 Google LLC. All Rights Reserved.
//
// 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
//
// http://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.
// Unit tests for crc4sandbox example.
#include <unistd.h>
#include <string>
#include <glog/logging.h>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "sandboxed_api/sandbox2/testing.h"
#include "sandboxed_api/sandbox2/util.h"
#include "sandboxed_api/util/status_matchers.h"
using ::testing::Eq;
using ::testing::StrEq;
namespace sandbox2 {
namespace {
class CRC4Test : public ::testing::Test {
protected:
void SetUp() override {
path_ = GetTestSourcePath("sandbox2/examples/crc4/crc4sandbox");
util::CharPtrArrToVecString(environ, &env_);
}
std::string path_;
std::vector<std::string> env_;
};
// Test that crc4sandbox works.
TEST_F(CRC4Test, TestNormalOperation) {
SKIP_SANITIZERS_AND_COVERAGE;
std::string output;
SAPI_ASSERT_OK_AND_ASSIGN(
int exit_code,
util::Communicate({path_, "-input", "ABCD"}, env_, &output));
EXPECT_THAT(output, StrEq("0x44434241\n"));
EXPECT_THAT(exit_code, Eq(0));
}
// Test that crc4sandbox protects against bugs, because only the sandboxee
// will crash and break its communication with executor.
TEST_F(CRC4Test, TestExploitAttempt) {
SKIP_SANITIZERS_AND_COVERAGE;
std::string output;
SAPI_ASSERT_OK_AND_ASSIGN(
int exit_code, util::Communicate({path_, "-input", std::string(128, 'A')},
env_, &output));
LOG(INFO) << "Output: " << output;
EXPECT_THAT(exit_code, Eq(3));
}
// Test that if sandboxee calls a syscall that is not allowed by the policy,
// it triggers a policy violation for the executor.
TEST_F(CRC4Test, TestSyscallViolation) {
SKIP_SANITIZERS_AND_COVERAGE;
std::string output;
SAPI_ASSERT_OK_AND_ASSIGN(
int exit_code,
util::Communicate({path_, "-input", "x", "-call_syscall_not_allowed"},
env_, &output));
LOG(INFO) << "Output: " << output;
EXPECT_THAT(exit_code, Eq(3));
}
} // namespace
} // namespace sandbox2