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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <map>
#include <optional>
#include <string>
#include "base/command_line.h"
#include "base/synchronization/lock.h"
#include "base/test/bind.h"
#include "base/values.h"
#include "chrome/browser/policy/safe_search_policy_test.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "chrome/test/base/ui_test_utils.h"
#include "components/google/core/common/google_switches.h"
#include "components/network_session_configurator/common/network_switches.h"
#include "components/policy/core/common/policy_map.h"
#include "components/policy/policy_constants.h"
#include "components/safe_search_api/safe_search_util.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "net/http/http_request_headers.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "net/test/embedded_test_server/http_request.h"
#include "url/gurl.h"
namespace policy {
void CheckYouTubeRestricted(int youtube_restrict_mode,
const net::HttpRequestHeaders& headers) {
std::string header =
headers.GetHeader(safe_search_api::kYouTubeRestrictHeaderName)
.value_or(std::string());
if (youtube_restrict_mode == safe_search_api::YOUTUBE_RESTRICT_OFF) {
EXPECT_TRUE(header.empty());
} else if (youtube_restrict_mode ==
safe_search_api::YOUTUBE_RESTRICT_MODERATE) {
EXPECT_EQ(header, safe_search_api::kYouTubeRestrictHeaderValueModerate);
} else if (youtube_restrict_mode ==
safe_search_api::YOUTUBE_RESTRICT_STRICT) {
EXPECT_EQ(header, safe_search_api::kYouTubeRestrictHeaderValueStrict);
}
}
void CheckAllowedDomainsHeader(const std::string& allowed_domain,
const net::HttpRequestHeaders& headers) {
if (allowed_domain.empty()) {
EXPECT_TRUE(!headers.HasHeader(safe_search_api::kGoogleAppsAllowedDomains));
return;
}
EXPECT_EQ(headers.GetHeader(safe_search_api::kGoogleAppsAllowedDomains),
allowed_domain);
}
class PolicyTestGoogle : public SafeSearchPolicyTest,
public testing::WithParamInterface<bool> {
public:
PolicyTestGoogle() : https_server_(net::EmbeddedTestServer::TYPE_HTTPS) {}
net::EmbeddedTestServer* https_server() { return &https_server_; }
std::map<std::string, net::HttpRequestHeaders> urls_requested() {
base::AutoLock auto_lock(lock_);
return urls_requested_;
}
Browser* GetBrowser() {
if (!is_incognito())
return browser();
if (!incognito_browser_)
incognito_browser_ = CreateIncognitoBrowser(browser()->profile());
return incognito_browser_;
}
private:
void SetUpOnMainThread() override {
SafeSearchPolicyTest::SetUpOnMainThread();
https_server_.AddDefaultHandlers(GetChromeTestDataDir());
https_server_.RegisterRequestMonitor(base::BindLambdaForTesting(
[&](const net::test_server::HttpRequest& request) {
net::HttpRequestHeaders headers;
for (auto& header : request.headers)
headers.SetHeader(header.first, header.second);
base::AutoLock auto_lock(lock_);
urls_requested_[request.relative_url] = headers;
}));
ASSERT_TRUE(https_server_.Start());
}
void SetUpCommandLine(base::CommandLine* command_line) override {
SafeSearchPolicyTest::SetUpCommandLine(command_line);
// Note for the google and youtube tests below, the throttles expect that
// the URLs are to google.com or youtube.com. Networking code also
// automatically upgrades http requests to these domains to https (see the
// preload list in https://www.chromium.org/hsts). So as a result we need
// to make the requests to an https server. Since the HTTPS server only
// serves a valid cert for localhost, so this is needed to load pages from
// "www.google.com" without an interstitial.
command_line->AppendSwitch(switches::kIgnoreCertificateErrors);
// The production code only allows known ports (80 for http and 443 for
// https), but the test server runs on a random port.
command_line->AppendSwitch(switches::kIgnoreGooglePortNumbers);
}
bool is_incognito() const { return GetParam(); }
net::EmbeddedTestServer https_server_;
base::Lock lock_;
std::map<std::string, net::HttpRequestHeaders> urls_requested_;
raw_ptr<Browser, AcrossTasksDanglingUntriaged> incognito_browser_ = nullptr;
};
INSTANTIATE_TEST_SUITE_P(, PolicyTestGoogle, ::testing::Bool());
IN_PROC_BROWSER_TEST_P(PolicyTestGoogle, ForceGoogleSafeSearch) {
ApplySafeSearchPolicy(std::nullopt, // ForceSafeSearch (legacy)
base::Value(true),
std::nullopt, // ForceYouTubeSafetyMode (legacy)
std::nullopt); // ForceYouTubeRestrict
GURL url = https_server()->GetURL("www.google.com",
"/server-redirect?http://google.com/");
CheckSafeSearch(GetBrowser(), true, url.spec());
}
IN_PROC_BROWSER_TEST_P(PolicyTestGoogle, ForceYouTubeRestrict) {
GURL youtube_url(https_server()->GetURL("youtube.com", "/empty.html"));
GURL youtube_script(https_server()->GetURL("youtube.com", "/json2.js"));
for (int youtube_restrict_mode = safe_search_api::YOUTUBE_RESTRICT_OFF;
youtube_restrict_mode < safe_search_api::YOUTUBE_RESTRICT_COUNT;
++youtube_restrict_mode) {
ApplySafeSearchPolicy(std::nullopt, // ForceSafeSearch (legacy)
std::nullopt, // ForceGoogleSafeSearch
std::nullopt, // ForceYouTubeSafetyMode (legacy)
base::Value(youtube_restrict_mode));
{
// First check frame requests.
ASSERT_TRUE(ui_test_utils::NavigateToURL(GetBrowser(), youtube_url));
CheckYouTubeRestricted(youtube_restrict_mode,
urls_requested()[youtube_url.path()]);
}
{
// Now check subresource loads.
FetchSubresource(GetBrowser()->tab_strip_model()->GetActiveWebContents(),
youtube_script);
CheckYouTubeRestricted(youtube_restrict_mode,
urls_requested()[youtube_script.path()]);
}
if (youtube_restrict_mode != safe_search_api::YOUTUBE_RESTRICT_OFF) {
// If a restriction is active, disable it while the page is open to check
// that renderer rules are properly updated when a renderer is running.
ApplySafeSearchPolicy(std::nullopt, // ForceSafeSearch (legacy)
std::nullopt, // ForceGoogleSafeSearch
std::nullopt, // ForceYouTubeSafetyMode (legacy)
base::Value(safe_search_api::YOUTUBE_RESTRICT_OFF));
FetchSubresource(GetBrowser()->tab_strip_model()->GetActiveWebContents(),
youtube_script);
CheckYouTubeRestricted(safe_search_api::YOUTUBE_RESTRICT_OFF,
urls_requested()[youtube_script.path()]);
}
}
}
IN_PROC_BROWSER_TEST_P(PolicyTestGoogle, AllowedDomainsForApps) {
for (int allowed_domains = 0; allowed_domains < 2; ++allowed_domains) {
std::string allowed_domain;
if (allowed_domains) {
PolicyMap policies;
allowed_domain = "foo.com";
SetPolicy(&policies, key::kAllowedDomainsForApps,
base::Value(allowed_domain));
UpdateProviderPolicy(policies);
}
{
// First check frame requests.
GURL google_url = https_server()->GetURL("google.com", "/empty.html");
ASSERT_TRUE(ui_test_utils::NavigateToURL(GetBrowser(), google_url));
CheckAllowedDomainsHeader(allowed_domain,
urls_requested()[google_url.path()]);
}
{
// Now check subresource loads.
GURL google_script =
https_server()->GetURL("google.com", "/result_queue.js");
FetchSubresource(GetBrowser()->tab_strip_model()->GetActiveWebContents(),
google_script);
CheckAllowedDomainsHeader(allowed_domain,
urls_requested()[google_script.path()]);
}
{
// Double check that a frame to a non-Google url doesn't have the header.
GURL non_google_url = https_server()->GetURL("/empty.html");
ASSERT_TRUE(ui_test_utils::NavigateToURL(GetBrowser(), non_google_url));
CheckAllowedDomainsHeader(std::string(),
urls_requested()[non_google_url.path()]);
}
}
}
} // namespace policy
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