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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include <unistd.h>
#include "base/process/kill.h"
#include "base/strings/string_number_conversions.h"
#include "base/test/multiprocess_test.h"
#include "base/test/test_timeouts.h"
#include "sandbox/mac/sandbox_compiler.h"
#include "sandbox/mac/sandbox_test.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/multiprocess_func_list.h"
namespace sandbox {
namespace {
constexpr char kTestParamSwitch[] = "sandbox-compiler-target";
SandboxCompiler::Target GetParamInChild() {
std::string target_str =
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
kTestParamSwitch);
CHECK(!target_str.empty());
int target_int;
CHECK(base::StringToInt(target_str, &target_int));
return static_cast<SandboxCompiler::Target>(target_int);
}
} // namespace
class SandboxCompilerTest
: public SandboxTest,
public testing::WithParamInterface<SandboxCompiler::Target> {
protected:
base::CommandLine MakeCmdLine(const std::string& procname) override {
base::CommandLine command_line =
base::MultiProcessTest::MakeCmdLine(procname);
command_line.AppendSwitchASCII(
kTestParamSwitch, base::NumberToString(static_cast<int>(GetParam())));
return command_line;
}
};
MULTIPROCESS_TEST_MAIN(BasicProfileProcess) {
SandboxCompiler compiler(GetParamInChild());
compiler.SetProfile(R"(
(version 1)
(deny default (with no-log))
(allow file-read* file-write* (literal "/"))
)");
std::string error;
CHECK(compiler.CompileAndApplyProfile(error));
return 0;
}
TEST_P(SandboxCompilerTest, BasicProfileTest) {
base::Process process = SpawnChild("BasicProfileProcess");
ASSERT_TRUE(process.IsValid());
int exit_code = 42;
EXPECT_TRUE(process.WaitForExitWithTimeout(TestTimeouts::action_max_timeout(),
&exit_code));
EXPECT_EQ(exit_code, 0);
}
MULTIPROCESS_TEST_MAIN(BasicProfileWithParamProcess) {
SandboxCompiler compiler(GetParamInChild());
compiler.SetProfile(R"(
(version 1)
(deny default (with no-log))
(allow file-read* file-write* (literal (param "DIR")))
)");
CHECK(compiler.SetParameter("DIR", "/"));
std::string error;
CHECK(compiler.CompileAndApplyProfile(error)) << error;
return 0;
}
TEST_P(SandboxCompilerTest, BasicProfileTestWithParam) {
base::Process process = SpawnChild("BasicProfileWithParamProcess");
ASSERT_TRUE(process.IsValid());
int exit_code = 42;
EXPECT_TRUE(process.WaitForExitWithTimeout(TestTimeouts::action_max_timeout(),
&exit_code));
EXPECT_EQ(exit_code, 0);
}
MULTIPROCESS_TEST_MAIN(ProfileFunctionalProcess) {
SandboxCompiler compiler(GetParamInChild());
compiler.SetProfile(R"(
(version 1)
(deny default (with no-log))
(allow file-read-data file-read-metadata (literal "/dev/urandom"))
)");
std::string error;
CHECK(compiler.CompileAndApplyProfile(error)) << error;
// The profile compiled and applied successfully, now try and read 1 byte from
// /dev/urandom.
uint8_t byte;
int fd = open("/dev/urandom", O_RDONLY);
CHECK_NE(fd, -1);
EXPECT_TRUE(read(fd, &byte, sizeof(byte)) == sizeof(byte));
return 0;
}
TEST_P(SandboxCompilerTest, ProfileFunctionalityTest) {
base::Process process = SpawnChild("ProfileFunctionalProcess");
ASSERT_TRUE(process.IsValid());
int exit_code = 42;
EXPECT_TRUE(process.WaitForExitWithTimeout(TestTimeouts::action_max_timeout(),
&exit_code));
EXPECT_EQ(exit_code, 0);
}
MULTIPROCESS_TEST_MAIN(ProfileFunctionalTestWithParamsProcess) {
SandboxCompiler compiler(GetParamInChild());
compiler.SetProfile(R"(
(version 1)
(deny default (with no-log))
(if (string=? (param "ALLOW_FILE") "TRUE")
(allow file-read-data file-read-metadata (literal (param "URANDOM")))
)
)");
CHECK(compiler.SetBooleanParameter("ALLOW_FILE", true));
CHECK(!compiler.SetParameter("ALLOW_FILE", "duplicate key is not allowed"));
CHECK(compiler.SetParameter("URANDOM", "/dev/urandom"));
std::string error;
CHECK(compiler.CompileAndApplyProfile(error)) << error;
// The profile compiled and applied successfully, now try and read 1 byte from
// /dev/urandom.
uint8_t byte;
int fd = open("/dev/urandom", O_RDONLY);
CHECK_NE(fd, -1);
EXPECT_TRUE(read(fd, &byte, sizeof(byte)) == sizeof(byte));
// Make sure the sandbox isn't overly permissive.
struct stat st;
EXPECT_EQ(stat("/", &st), -1);
return 0;
}
TEST_P(SandboxCompilerTest, ProfileFunctionalityTestWithParams) {
base::Process process = SpawnChild("ProfileFunctionalTestWithParamsProcess");
ASSERT_TRUE(process.IsValid());
int exit_code = 42;
EXPECT_TRUE(process.WaitForExitWithTimeout(TestTimeouts::action_max_timeout(),
&exit_code));
EXPECT_EQ(exit_code, 0);
}
MULTIPROCESS_TEST_MAIN(ProfileFunctionalityTestErrorProcess) {
SandboxCompiler compiler(GetParamInChild());
compiler.SetProfile("(+ 5 a)");
// Make sure that this invalid profile results in an error returned.
std::string error;
CHECK_EQ(error, "");
CHECK(!compiler.CompileAndApplyProfile(error)) << error;
CHECK_NE(error, "");
return 0;
}
TEST_P(SandboxCompilerTest, ProfileFunctionalityTestError) {
base::Process process = SpawnChild("ProfileFunctionalityTestErrorProcess");
ASSERT_TRUE(process.IsValid());
int exit_code = 42;
EXPECT_TRUE(process.WaitForExitWithTimeout(TestTimeouts::action_max_timeout(),
&exit_code));
EXPECT_EQ(exit_code, 0);
}
TEST_P(SandboxCompilerTest, DuplicateKeys) {
SandboxCompiler compiler(GetParam());
compiler.SetProfile("(version 1)(deny default)");
EXPECT_TRUE(compiler.SetBooleanParameter("key1", true));
EXPECT_FALSE(compiler.SetBooleanParameter("key1", false));
EXPECT_TRUE(compiler.SetBooleanParameter("key2", false));
EXPECT_TRUE(compiler.SetParameter("key3", "value"));
EXPECT_FALSE(compiler.SetParameter("key3", "value"));
mac::SandboxPolicy policy;
std::string error;
ASSERT_TRUE(compiler.CompilePolicyToProto(policy, error)) << error;
if (GetParam() == SandboxCompiler::Target::kSource) {
EXPECT_EQ(3, policy.source().params_size());
EXPECT_FALSE(policy.source().profile().empty());
EXPECT_TRUE(policy.compiled().data().empty());
} else {
EXPECT_EQ(0, policy.source().params_size());
EXPECT_TRUE(policy.source().profile().empty());
EXPECT_FALSE(policy.compiled().data().empty());
}
}
INSTANTIATE_TEST_SUITE_P(Target,
SandboxCompilerTest,
testing::Values(SandboxCompiler::Target::kSource,
SandboxCompiler::Target::kCompiled));
} // namespace sandbox
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