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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <memory>
#include <string>
#include <string_view>
#include <vector>
#include "base/feature_list.h"
#include "base/files/file_util.h"
#include "base/json/json_reader.h"
#include "base/json/json_writer.h"
#include "base/run_loop.h"
#include "base/strings/string_util.h"
#include "base/test/bind.h"
#include "base/test/scoped_feature_list.h"
#include "base/threading/thread_restrictions.h"
#include "base/values.h"
#include "build/build_config.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/network_service_instance.h"
#include "content/public/browser/page.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_paths.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/content_browser_test.h"
#include "content/shell/browser/shell.h"
#include "net/base/network_interfaces.h"
#include "sandbox/features.h"
#include "sandbox/policy/features.h"
#include "services/network/public/mojom/network_service.mojom.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content {
namespace {
class SandboxedNetworkListBrowserTest : public ContentBrowserTest {
public:
SandboxedNetworkListBrowserTest() {
[[maybe_unused]] bool sandbox_enabled = false;
[[maybe_unused]] bool lpac_enabled = false;
switch (GetTestPreCount()) {
case 0:
break;
case 1:
sandbox_enabled = false;
lpac_enabled = false;
break;
case 2:
sandbox_enabled = true;
lpac_enabled = false;
break;
case 3:
sandbox_enabled = true;
lpac_enabled = true;
break;
default:
NOTREACHED();
}
std::vector<base::test::FeatureRef> enabled_features;
std::vector<base::test::FeatureRef> disabled_features;
disabled_features.push_back(features::kNetworkServiceInProcess);
#if !BUILDFLAG(IS_MAC) && !BUILDFLAG(IS_FUCHSIA)
if (sandbox_enabled) {
enabled_features.push_back(
sandbox::policy::features::kNetworkServiceSandbox);
} else {
disabled_features.push_back(
sandbox::policy::features::kNetworkServiceSandbox);
}
#endif // !BUILDFLAG(IS_MAC) && !BUILDFLAG(IS_FUCHSIA)
#if BUILDFLAG(IS_WIN)
if (lpac_enabled) {
enabled_features.push_back(
sandbox::policy::features::kWinSboxNetworkServiceSandboxIsLPAC);
} else {
disabled_features.push_back(
sandbox::policy::features::kWinSboxNetworkServiceSandboxIsLPAC);
}
#endif // BUILDFLAG(IS_WIN)
scoped_features_.InitWithFeatures(enabled_features, disabled_features);
}
protected:
#if BUILDFLAG(IS_ANDROID)
void SetUp() override {
GTEST_SKIP() << "GetNetworkList not yet supported in Android network "
"sandbox. See https://crbug.com/1381381.";
}
#endif // BUILDFLAG(IS_ANDROID)
void WriteInterfacesToFile(const base::FilePath& path) {
base::Value::List interfaces_list;
base::RunLoop run_loop;
std::vector<net::NetworkInterface> interfaces;
GetNetworkService()->GetNetworkList(
net::EXCLUDE_HOST_SCOPE_VIRTUAL_INTERFACES,
base::BindLambdaForTesting(
[&](const std::optional<std::vector<net::NetworkInterface>>& ret) {
interfaces = *ret;
run_loop.Quit();
}));
run_loop.Run();
for (const auto& interface : interfaces) {
base::Value::Dict interface_dict;
interface_dict.Set("name", interface.name);
interface_dict.Set("type", interface.type);
interface_dict.Set("address", interface.address.ToString());
interfaces_list.Append(std::move(interface_dict));
}
std::string json;
EXPECT_TRUE(base::JSONWriter::Write(interfaces_list, &json));
EXPECT_TRUE(base::WriteFile(path, json));
}
bool AreFileContentsIdentical(const base::FilePath& path1,
const base::FilePath& path2) {
std::string contents1;
EXPECT_TRUE(base::ReadFileToString(path1, &contents1));
std::string contents2;
EXPECT_TRUE(base::ReadFileToString(path2, &contents2));
return (contents1 == contents2);
}
base::FilePath GetPersistentPathLocation(std::string_view name) {
return shell()->web_contents()->GetBrowserContext()->GetPath().AppendASCII(
name);
}
private:
size_t GetTestPreCount() {
constexpr std::string_view kPreTestPrefix = "PRE_";
std::string_view test_name =
testing::UnitTest::GetInstance()->current_test_info()->name();
size_t count = 0;
while (base::StartsWith(test_name, kPreTestPrefix)) {
++count;
test_name = test_name.substr(kPreTestPrefix.size());
}
return count;
}
base::test::ScopedFeatureList scoped_features_;
};
// First part of the test has sandbox enabled, and on Windows, LPAC sandbox also
// enabled.
IN_PROC_BROWSER_TEST_F(SandboxedNetworkListBrowserTest,
PRE_PRE_PRE_NetworkList) {
base::ScopedAllowBlockingForTesting allow_blocking;
WriteInterfacesToFile(GetPersistentPathLocation("3"));
}
// Second part of the test has sandbox enabled, and on Windows, LPAC sandbox
// also disabled. On non-Windows this makes the test the same as the first
// one above.
IN_PROC_BROWSER_TEST_F(SandboxedNetworkListBrowserTest, PRE_PRE_NetworkList) {
base::ScopedAllowBlockingForTesting allow_blocking;
WriteInterfacesToFile(GetPersistentPathLocation("2"));
}
// Third part of the test runs with sandbox disabled.
IN_PROC_BROWSER_TEST_F(SandboxedNetworkListBrowserTest, PRE_NetworkList) {
base::ScopedAllowBlockingForTesting allow_blocking;
WriteInterfacesToFile(GetPersistentPathLocation("1"));
}
// The fourth part of the test verifies all the other results match and deletes
// the files.
IN_PROC_BROWSER_TEST_F(SandboxedNetworkListBrowserTest, NetworkList) {
base::ScopedAllowBlockingForTesting allow_blocking;
EXPECT_TRUE(AreFileContentsIdentical(GetPersistentPathLocation("1"),
GetPersistentPathLocation("2")));
EXPECT_TRUE(AreFileContentsIdentical(GetPersistentPathLocation("1"),
GetPersistentPathLocation("3")));
base::DeleteFile(GetPersistentPathLocation("1"));
base::DeleteFile(GetPersistentPathLocation("2"));
base::DeleteFile(GetPersistentPathLocation("3"));
}
} // namespace
} // namespace content
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