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content / browser / loader / prefetch_browsertest.cc [blame]
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <string>
#include <vector>
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/run_loop.h"
#include "base/strings/stringprintf.h"
#include "base/test/bind.h"
#include "base/test/scoped_feature_list.h"
#include "base/test/test_future.h"
#include "base/threading/thread_restrictions.h"
#include "build/build_config.h"
#include "content/browser/loader/prefetch_browsertest_base.h"
#include "content/browser/web_package/mock_signed_exchange_handler.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/content_browser_test.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/public/test/fenced_frame_test_util.h"
#include "content/public/test/test_frame_navigation_observer.h"
#include "content/public/test/url_loader_monitor.h"
#include "content/shell/browser/shell.h"
#include "net/base/features.h"
#include "net/base/filename_util.h"
#include "net/base/isolation_info.h"
#include "net/dns/mock_host_resolver.h"
#include "net/test/embedded_test_server/default_handlers.h"
#include "net/test/scoped_mutually_exclusive_feature_list.h"
#include "services/network/public/cpp/features.h"
#include "services/network/public/cpp/resource_request.h"
#include "third_party/blink/public/common/features.h"
namespace content {
namespace {
enum class SplitCacheTestCase {
kDisabled,
kEnabledTripleKeyed,
kEnabledTriplePlusCredsBool,
kEnabledTriplePlusCrossSiteMainFrameNavBool,
kEnabledTriplePlusMainFrameNavInitiator,
kEnabledTriplePlusNavInitiator
// Note: For the purposes of our HTTP Cache initiator experiment we won't
// assume that SplitCacheByCredentials feature can be enabled while any of the
// initiator features are, and we won't test these combinations.
};
const struct {
const SplitCacheTestCase test_case;
base::test::FeatureRef feature;
} kTestCaseToFeatureMapping[] = {
{SplitCacheTestCase::kEnabledTriplePlusCredsBool,
net::features::kSplitCacheByIncludeCredentials},
{SplitCacheTestCase::kEnabledTriplePlusCrossSiteMainFrameNavBool,
net::features::kSplitCacheByCrossSiteMainFrameNavigationBoolean},
{SplitCacheTestCase::kEnabledTriplePlusMainFrameNavInitiator,
net::features::kSplitCacheByMainFrameNavigationInitiator},
{SplitCacheTestCase::kEnabledTriplePlusNavInitiator,
net::features::kSplitCacheByNavigationInitiator}};
} // namespace
class PrefetchBrowserTest
: public PrefetchBrowserTestBase,
public testing::WithParamInterface<SplitCacheTestCase> {
public:
PrefetchBrowserTest()
: cross_origin_server_(std::make_unique<net::EmbeddedTestServer>()),
split_cache_test_case_(GetParam()),
split_cache_experiment_feature_list_(GetParam(),
kTestCaseToFeatureMapping) {
if (IsSplitCacheEnabled()) {
split_cache_enabled_feature_list_.InitAndEnableFeature(
net::features::kSplitCacheByNetworkIsolationKey);
} else {
split_cache_enabled_feature_list_.InitAndDisableFeature(
net::features::kSplitCacheByNetworkIsolationKey);
}
}
PrefetchBrowserTest(const PrefetchBrowserTest&) = delete;
PrefetchBrowserTest& operator=(const PrefetchBrowserTest&) = delete;
~PrefetchBrowserTest() override = default;
void SetUpOnMainThread() override {
PrefetchBrowserTestBase::SetUpOnMainThread();
host_resolver()->AddRule("*", "127.0.0.1");
}
bool IsSplitCacheEnabled() const {
return split_cache_test_case_ != SplitCacheTestCase::kDisabled;
}
protected:
std::unique_ptr<net::EmbeddedTestServer> cross_origin_server_;
const SplitCacheTestCase split_cache_test_case_;
private:
net::test::ScopedMutuallyExclusiveFeatureList
split_cache_experiment_feature_list_;
base::test::ScopedFeatureList split_cache_enabled_feature_list_;
};
class PrefetchBrowserTestPrivacyChanges
: public PrefetchBrowserTestBase,
public testing::WithParamInterface<bool> {
public:
PrefetchBrowserTestPrivacyChanges()
: privacy_changes_enabled_(GetParam()),
cross_origin_server_(std::make_unique<net::EmbeddedTestServer>()) {}
PrefetchBrowserTestPrivacyChanges(const PrefetchBrowserTestPrivacyChanges&) =
delete;
PrefetchBrowserTestPrivacyChanges& operator=(
const PrefetchBrowserTestPrivacyChanges&) = delete;
~PrefetchBrowserTestPrivacyChanges() override = default;
void SetUp() override {
std::vector<base::test::FeatureRef> enable_features;
std::vector<base::test::FeatureRef> disabled_features;
if (privacy_changes_enabled_) {
enable_features.push_back(blink::features::kPrefetchPrivacyChanges);
} else {
disabled_features.push_back(blink::features::kPrefetchPrivacyChanges);
}
feature_list_.InitWithFeatures(enable_features, disabled_features);
PrefetchBrowserTestBase::SetUp();
}
protected:
const bool privacy_changes_enabled_;
std::unique_ptr<net::EmbeddedTestServer> cross_origin_server_;
private:
base::test::ScopedFeatureList feature_list_;
};
// Test flakes.
// TODO(crbug.com/40248957): Resolve flake and reenable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTestPrivacyChanges,
DISABLED_RedirectNotFollowed) {
const char* prefetch_path = "/prefetch.html";
const char* redirect_path = "/redirect.html";
const char* destination_path = "/destination.html";
RegisterResponse(
prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s'></body>", redirect_path)));
RegisterResponse(
redirect_path,
ResponseEntry("", "", {{"location", std::string(destination_path)}},
net::HTTP_MOVED_PERMANENTLY));
RegisterResponse(destination_path,
ResponseEntry("<head><title>Prefetch Target</title></head>",
"text/html", {{"cache-control", "no-store"}}));
base::RunLoop prefetch_waiter;
auto main_page_counter = RequestCounter::CreateAndMonitor(
embedded_test_server(), prefetch_path, &prefetch_waiter);
auto destination_counter = RequestCounter::CreateAndMonitor(
embedded_test_server(), destination_path);
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, main_page_counter->GetRequestCount());
EXPECT_EQ(0, destination_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
const GURL destination_url = embedded_test_server()->GetURL(destination_path);
// Loading a page that prefetches the redirect resource only follows the
// redirect when the mode is follow.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
prefetch_waiter.Run();
EXPECT_EQ(1, main_page_counter->GetRequestCount());
NavigateToURLAndWaitTitle(destination_url, "Prefetch Target");
const int expected_request_count = privacy_changes_enabled_ ? 1 : 2;
EXPECT_EQ(expected_request_count, destination_counter->GetRequestCount());
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
}
// TODO(crbug.com/40256279): De-flake and re-enable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest,
DISABLED_CrossOriginDocumentHasNoSameSiteCookies) {
const char* prefetch_path = "/prefetch.html";
const char* target_path = "/target.html";
RegisterResponse(
target_path,
ResponseEntry("<head><title>Prefetch Target</title></head>"));
base::RunLoop prefetch_waiter;
auto request_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), target_path, &prefetch_waiter);
RegisterRequestHandler(cross_origin_server_.get());
ASSERT_TRUE(cross_origin_server_->Start());
const GURL cross_origin_target_url =
cross_origin_server_->GetURL("3p.example", target_path);
RegisterResponse(
prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' as='document' href='%s'></body>",
cross_origin_target_url.spec().c_str())));
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, request_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
URLLoaderMonitor monitor({cross_origin_target_url});
// Loading a page that prefetches the target URL would increment the
// |request_counter|.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
prefetch_waiter.Run();
EXPECT_EQ(1, request_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
monitor.WaitForUrls();
std::optional<network::ResourceRequest> request =
monitor.GetRequestInfo(cross_origin_target_url);
ASSERT_TRUE(request);
ASSERT_TRUE(request->site_for_cookies.IsNull());
ASSERT_TRUE(request->trusted_params);
url::Origin cross_origin = url::Origin::Create(cross_origin_target_url);
EXPECT_TRUE(net::IsolationInfo::Create(
net::IsolationInfo::RequestType::kMainFrame, cross_origin,
cross_origin, net::SiteForCookies())
.IsEqualForTesting(request->trusted_params->isolation_info));
}
// TODO(crbug.com/40256279): De-flake and re-enable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest,
DISABLED_CrossOriginDocumentReusedAsNavigation) {
const char* prefetch_path = "/prefetch.html";
const char* target_path = "/target.html";
RegisterResponse(target_path,
ResponseEntry("<head><title>Prefetch Target</title></head>",
// The empty content type prevents this
// response from being blocked by ORB.
/*content_types=*/""));
base::RunLoop prefetch_waiter;
auto request_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), target_path, &prefetch_waiter);
RegisterRequestHandler(cross_origin_server_.get());
ASSERT_TRUE(cross_origin_server_->Start());
const GURL cross_origin_target_url =
cross_origin_server_->GetURL("3p.example", target_path);
RegisterResponse(
prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' as='document' href='%s'></body>",
cross_origin_target_url.spec().c_str())));
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, request_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
// Loading a page that prefetches the target URL would increment the
// |request_counter|.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
prefetch_waiter.Run();
EXPECT_EQ(1, request_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Shutdown the servers.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
EXPECT_TRUE(cross_origin_server_->ShutdownAndWaitUntilComplete());
// Subsequent navigation to the cross-origin target URL shouldn't hit the
// network, and should be loaded from cache.
NavigateToURLAndWaitTitle(cross_origin_target_url, "Prefetch Target");
}
// TODO(crbug.com/40256279): De-flake and re-enable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest,
DISABLED_CrossOriginDocumentFromOpaqueOrigin) {
// Prefetching as=document from a data: URL does not crash the renderer.
EXPECT_TRUE(NavigateToURL(
shell(),
GURL("data:text/html,<title>Data URL Prefetch Target</title><link "
"rel=prefetch as=document href=https://google.com>")));
}
// TODO(crbug.com/40256279): De-flake and re-enable.
IN_PROC_BROWSER_TEST_P(
PrefetchBrowserTest,
DISABLED_CrossOriginDocumentNotReusedAsNestedFrameNavigation) {
// TODO(crbug.com/40093267): Remove this early-return when SplitCache is
// enabled by default.
if (!IsSplitCacheEnabled()) {
GTEST_SKIP() << "This test is relevant only with SplitCache.";
}
const char* prefetch_path = "/prefetch.html";
const char* host_path = "/host.html";
const char* iframe_path = "/iframe.html";
RegisterResponse(
host_path,
ResponseEntry(base::StringPrintf(
"<head><title>Cross-Origin Host</title></head><body><iframe "
"onload='document.title=\"Host Loaded\"' src='%s'></iframe></body>",
iframe_path)));
RegisterResponse(iframe_path, ResponseEntry("<h1>I am an iframe</h1>"));
base::RunLoop prefetch_waiter;
auto cross_origin_iframe_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), iframe_path, &prefetch_waiter);
RegisterRequestHandler(cross_origin_server_.get());
ASSERT_TRUE(cross_origin_server_->Start());
const GURL cross_origin_host_url =
cross_origin_server_->GetURL("3p.example", host_path);
const GURL cross_origin_iframe_url =
cross_origin_server_->GetURL("3p.example", iframe_path);
RegisterResponse(
prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' as='document' href='%s'></body>",
cross_origin_iframe_url.spec().c_str())));
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, cross_origin_iframe_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
// Loading a page that prefetches the cross-origin iframe URL increments its
// counter.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
prefetch_waiter.Run();
EXPECT_EQ(1, cross_origin_iframe_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Subsequent navigation to the cross-origin host site will trigger an iframe
// load which will not reuse the iframe that was prefetched from
// |prefetch_path|. This is because cross-origin document prefetches must
// only be reused for top-level navigations, and cannot be reused as
// cross-origin iframes.
NavigateToURLAndWaitTitle(cross_origin_host_url, "Host Loaded");
EXPECT_EQ(2, cross_origin_iframe_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Shutdown the servers.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
EXPECT_TRUE(cross_origin_server_->ShutdownAndWaitUntilComplete());
}
// TODO(crbug.com/40256279): De-flake and re-enable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest,
DISABLED_CrossOriginSubresourceNotReused) {
// TODO(crbug.com/40093267): Remove this early-return when SplitCache is
// enabled by default.
if (!IsSplitCacheEnabled()) {
GTEST_SKIP() << "This test is relevant only with SplitCache.";
}
const char* prefetch_path = "/prefetch.html";
const char* host_path = "/host.html";
const char* subresource_path = "/subresource.js";
RegisterResponse(
host_path,
ResponseEntry(base::StringPrintf(
"<head><title>Cross-Origin Host</title></head><body><script src='%s' "
"onload='document.title=\"Host Loaded\"'></script></body>",
subresource_path)));
RegisterResponse(subresource_path, ResponseEntry("console.log('I loaded')"));
base::RunLoop prefetch_waiter;
auto cross_origin_subresource_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), subresource_path, &prefetch_waiter);
RegisterRequestHandler(cross_origin_server_.get());
ASSERT_TRUE(cross_origin_server_->Start());
const GURL cross_origin_host_url =
cross_origin_server_->GetURL("3p.example", host_path);
const GURL cross_origin_subresource_url =
cross_origin_server_->GetURL("3p.example", subresource_path);
RegisterResponse(prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s'></body>",
cross_origin_subresource_url.spec().c_str())));
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, cross_origin_subresource_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
// Loading a page that prefetches the cross-origin subresource URL
// increments its counter.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
prefetch_waiter.Run();
EXPECT_EQ(1, cross_origin_subresource_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Subsequent navigation to the cross-origin host attempting to reuse the
// resource that was prefetched results in the request hitting the network.
// This is because cross-origin subresources must only be reused within the
// frame they were fetched from.
NavigateToURLAndWaitTitle(cross_origin_host_url, "Host Loaded");
EXPECT_EQ(2, cross_origin_subresource_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Shutdown the servers.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
EXPECT_TRUE(cross_origin_server_->ShutdownAndWaitUntilComplete());
}
// TODO(crbug.com/40256279): De-flake and re-enable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest,
DISABLED_CrossOriginSubresourceReusedByCurrentFrame) {
const char* prefetch_path = "/prefetch.html";
const char* use_prefetch_path = "/use-prefetch.html";
const char* subresource_path = "/subresource.js";
RegisterResponse(subresource_path, ResponseEntry("console.log('I loaded')"));
base::RunLoop prefetch_waiter;
auto cross_origin_subresource_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), subresource_path, &prefetch_waiter);
RegisterRequestHandler(cross_origin_server_.get());
ASSERT_TRUE(cross_origin_server_->Start());
const GURL cross_origin_subresource_url =
cross_origin_server_->GetURL("3p.example", subresource_path);
RegisterResponse(prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s'></body>",
cross_origin_subresource_url.spec().c_str())));
RegisterResponse(use_prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><script src='%s' onload='document.title=\"Use "
"Prefetch Loaded\"'></script></body>",
cross_origin_subresource_url.spec().c_str())));
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, cross_origin_subresource_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
// Loading a page that prefetches the cross-origin subresource URL
// increments its counter.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
prefetch_waiter.Run();
EXPECT_EQ(1, cross_origin_subresource_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Shut down the cross-origin server.
EXPECT_TRUE(cross_origin_server_->ShutdownAndWaitUntilComplete());
// Subsequent navigation to the same-origin document that attempts to reuse
// the cross-origin prefetch is able to reuse the resource from the cache.
NavigateToURLAndWaitTitle(embedded_test_server()->GetURL(use_prefetch_path),
"Use Prefetch Loaded");
// Shutdown the same-origin server.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
}
// This tests more of an implementation detail than anything. A single resource
// must be committed to the cache partition corresponding to a single
// NetworkAnonymizationKey. This means that even though it is considered "safe"
// to reused cross-origin subresource prefetches for top-level navigations, we
// can't actually do this, because the subresource is only reusable from the
// frame that fetched it.
// TODO(crbug.com/40256279): De-flake and re-enable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest,
DISABLED_CrossOriginSubresourceNotReusedAsNavigation) {
// TODO(crbug.com/40093267): Remove this early-return when SplitCache is
// enabled by default.
if (!IsSplitCacheEnabled()) {
GTEST_SKIP() << "This test is relevant only with SplitCache.";
}
const char* prefetch_path = "/prefetch.html";
const char* subresource_path = "/subresource.js";
RegisterResponse(subresource_path, ResponseEntry("console.log('I loaded');"));
base::RunLoop prefetch_waiter;
auto cross_origin_subresource_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), subresource_path, &prefetch_waiter);
RegisterRequestHandler(cross_origin_server_.get());
ASSERT_TRUE(cross_origin_server_->Start());
const GURL cross_origin_subresource_url =
cross_origin_server_->GetURL("3p.example", subresource_path);
RegisterResponse(prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s'></body>",
cross_origin_subresource_url.spec().c_str())));
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, cross_origin_subresource_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
// Loading a page that prefetches the cross-origin subresource URL
// increments its counter.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
prefetch_waiter.Run();
EXPECT_EQ(1, cross_origin_subresource_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Shutdown the same-origin server.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
// Subsequent navigation to the cross-origin subresource itself will not be
// reused from the cache, because the cached resource is not partitioned under
// the cross-origin it is served from.
EXPECT_TRUE(NavigateToURL(shell(), cross_origin_subresource_url));
EXPECT_EQ(2, cross_origin_subresource_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Shutdown the cross-origin server.
EXPECT_TRUE(cross_origin_server_->ShutdownAndWaitUntilComplete());
}
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest, Simple) {
const char* prefetch_path = "/prefetch.html";
const char* target_path = "/target.html";
RegisterResponse(
prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s'></body>", target_path)));
RegisterResponse(
target_path,
ResponseEntry("<head><title>Prefetch Target</title></head>"));
base::RunLoop prefetch_waiter;
auto request_counter = RequestCounter::CreateAndMonitor(
embedded_test_server(), target_path, &prefetch_waiter);
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, request_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
const GURL target_url = embedded_test_server()->GetURL(target_path);
// Loading a page that prefetches the target URL would increment the
// |request_counter|.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
prefetch_waiter.Run();
EXPECT_EQ(1, request_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Shutdown the server.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
// Subsequent navigation to the target URL wouldn't hit the network for
// the target URL. The target content should still be read correctly.
NavigateToURLAndWaitTitle(target_url, "Prefetch Target");
}
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest, DoublePrefetch) {
const char* prefetch_path = "/prefetch.html";
const char* target_path = "/target.html";
RegisterResponse(prefetch_path, ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s'>"
"<link rel='prefetch' href='%s'></body>",
target_path, target_path)));
RegisterResponse(
target_path,
ResponseEntry("<head><title>Prefetch Target</title></head>"));
base::RunLoop prefetch_waiter;
auto request_counter = RequestCounter::CreateAndMonitor(
embedded_test_server(), target_path, &prefetch_waiter);
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, request_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
const GURL target_url = embedded_test_server()->GetURL(target_path);
// Loading a page that prefetches the target URL would increment the
// |request_counter|, but it should hit only once.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
prefetch_waiter.Run();
EXPECT_EQ(1, request_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Shutdown the server.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
// Subsequent navigation to the target URL wouldn't hit the network for
// the target URL. The target content should still be read correctly.
NavigateToURLAndWaitTitle(target_url, "Prefetch Target");
}
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest, NoCacheAndNoStore) {
const char* prefetch_path = "/prefetch.html";
const char* nocache_path = "/target1.html";
const char* nostore_path = "/target2.html";
RegisterResponse(prefetch_path, ResponseEntry(base::StringPrintf(
"<body>"
"<link rel='prefetch' href='%s'>"
"<link rel='prefetch' href='%s'></body>",
nocache_path, nostore_path)));
RegisterResponse(nocache_path,
ResponseEntry("<head><title>NoCache Target</title></head>",
"text/html", {{"cache-control", "no-cache"}}));
RegisterResponse(nostore_path,
ResponseEntry("<head><title>NoStore Target</title></head>",
"text/html", {{"cache-control", "no-store"}}));
base::RunLoop nocache_waiter;
base::RunLoop nostore_waiter;
auto nocache_request_counter = RequestCounter::CreateAndMonitor(
embedded_test_server(), nocache_path, &nocache_waiter);
auto nostore_request_counter = RequestCounter::CreateAndMonitor(
embedded_test_server(), nostore_path, &nostore_waiter);
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
// Loading a page that prefetches the target URL would increment the
// fetch count for the both targets.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
nocache_waiter.Run();
nostore_waiter.Run();
EXPECT_EQ(1, nocache_request_counter->GetRequestCount());
EXPECT_EQ(1, nostore_request_counter->GetRequestCount());
EXPECT_EQ(2, GetPrefetchURLLoaderCallCount());
// Subsequent navigation to the no-cache URL wouldn't hit the network, because
// no-cache resource is kept available up to kPrefetchReuseMins.
NavigateToURLAndWaitTitle(embedded_test_server()->GetURL(nocache_path),
"NoCache Target");
EXPECT_EQ(1, nocache_request_counter->GetRequestCount());
// Subsequent navigation to the no-store URL hit the network again, because
// no-store resource is not cached even for prefetch.
NavigateToURLAndWaitTitle(embedded_test_server()->GetURL(nostore_path),
"NoStore Target");
EXPECT_EQ(2, nostore_request_counter->GetRequestCount());
EXPECT_EQ(2, GetPrefetchURLLoaderCallCount());
}
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest, WithPreload) {
const char* prefetch_path = "/prefetch.html";
const char* target_path = "/target.html";
const char* preload_path = "/preload.js";
RegisterResponse(
prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s'></body>", target_path)));
RegisterResponse(
target_path,
ResponseEntry("<head><title>Prefetch Target</title><script "
"src=\"./preload.js\"></script></head>",
"text/html",
{{"link", "</preload.js>;rel=\"preload\";as=\"script\""}}));
RegisterResponse(preload_path,
ResponseEntry("document.title=\"done\";", "text/javascript",
{{"cache-control", "public, max-age=600"}}));
base::RunLoop preload_waiter;
auto target_request_counter =
RequestCounter::CreateAndMonitor(embedded_test_server(), target_path);
auto preload_request_counter = RequestCounter::CreateAndMonitor(
embedded_test_server(), preload_path, &preload_waiter);
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
const GURL target_url = embedded_test_server()->GetURL(target_path);
// Loading a page that prefetches the target URL would increment both
// |target_request_counter| and |preload_request_counter|.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
preload_waiter.Run();
EXPECT_EQ(1, target_request_counter->GetRequestCount());
EXPECT_EQ(1, preload_request_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
WaitUntilLoaded(embedded_test_server()->GetURL(preload_path));
// Shutdown the server.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
NavigateToURLAndWaitTitle(target_url, "done");
}
// TODO(crbug.com/40256279): De-flake and re-enable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest,
DISABLED_CrossOriginWithPreloadHasNoSameSiteCookies) {
const char* target_path = "/target.html";
const char* preload_path = "/preload.js";
RegisterResponse(
target_path,
ResponseEntry("<head><title>Prefetch Target</title><script "
"src=\"./preload.js\"></script></head>",
"text/html",
{{"link", "</preload.js>;rel=\"preload\";as=\"script\""},
{"access-control-allow-origin", "*"}}));
RegisterResponse(preload_path,
ResponseEntry("document.title=\"done\";", "text/javascript",
{{"cache-control", "public, max-age=600"}}));
base::RunLoop preload_waiter;
auto target_request_counter =
RequestCounter::CreateAndMonitor(cross_origin_server_.get(), target_path);
auto preload_request_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), preload_path, &preload_waiter);
RegisterRequestHandler(cross_origin_server_.get());
ASSERT_TRUE(cross_origin_server_->Start());
const GURL cross_origin_target_url =
cross_origin_server_->GetURL("3p.example", target_path);
const char* prefetch_path = "/prefetch.html";
RegisterResponse(prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s' as='document' "
"crossorigin='anonymous'></body>",
cross_origin_target_url.spec().c_str())));
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
URLLoaderMonitor monitor({cross_origin_target_url});
// Loading a page that prefetches the target URL would increment both
// |target_request_counter| and |preload_request_counter|.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
preload_waiter.Run();
EXPECT_EQ(1, target_request_counter->GetRequestCount());
EXPECT_EQ(1, preload_request_counter->GetRequestCount());
EXPECT_EQ(2, GetPrefetchURLLoaderCallCount());
GURL cross_origin_preload_url =
cross_origin_server_->GetURL("3p.example", preload_path);
WaitUntilLoaded(cross_origin_preload_url);
monitor.WaitForUrls();
std::optional<network::ResourceRequest> request =
monitor.GetRequestInfo(cross_origin_target_url);
ASSERT_TRUE(request);
ASSERT_TRUE(request->site_for_cookies.IsNull());
ASSERT_TRUE(request->trusted_params);
url::Origin cross_origin = url::Origin::Create(cross_origin_target_url);
EXPECT_TRUE(net::IsolationInfo::Create(
net::IsolationInfo::RequestType::kMainFrame, cross_origin,
cross_origin, net::SiteForCookies())
.IsEqualForTesting(request->trusted_params->isolation_info));
}
// Variants of this test:
// - PrefetchBrowserTest.CrossOriginWithPreloadAnonymous
// - PrefetchBrowserTest.CrossOriginWithPreloadCredentialled
// TODO(crbug.com/40256279): De-flake and re-enable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest,
DISABLED_CrossOriginWithPreloadAnonymous) {
const char* target_path = "/target.html";
const char* preload_path = "/preload.js";
RegisterResponse(
target_path,
ResponseEntry("<head><title>Prefetch Target</title><script "
"src=\"./preload.js\"></script></head>",
"text/html",
{{"link", "</preload.js>;rel=\"preload\";as=\"script\""},
{"access-control-allow-origin", "*"}}));
RegisterResponse(preload_path,
ResponseEntry("document.title=\"done\";", "text/javascript",
{{"cache-control", "public, max-age=600"}}));
base::RunLoop preload_waiter;
auto target_request_counter =
RequestCounter::CreateAndMonitor(cross_origin_server_.get(), target_path);
auto preload_request_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), preload_path, &preload_waiter);
RegisterRequestHandler(cross_origin_server_.get());
base::RunLoop preload_waiter_second_request;
auto preload_request_counter_second_request =
RequestCounter::CreateAndMonitor(cross_origin_server_.get(), preload_path,
&preload_waiter_second_request);
ASSERT_TRUE(cross_origin_server_->Start());
const GURL cross_origin_target_url =
cross_origin_server_->GetURL("3p.example", target_path);
const char* prefetch_path = "/prefetch.html";
RegisterResponse(prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s' as='document' "
"crossorigin='anonymous'></body>",
cross_origin_target_url.spec().c_str())));
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
// Loading a page that prefetches the target URL would increment both
// |target_request_counter| and |preload_request_counter|.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
preload_waiter.Run();
EXPECT_EQ(1, target_request_counter->GetRequestCount());
EXPECT_EQ(1, preload_request_counter->GetRequestCount());
EXPECT_EQ(2, GetPrefetchURLLoaderCallCount());
GURL cross_origin_preload_url =
cross_origin_server_->GetURL("3p.example", preload_path);
WaitUntilLoaded(cross_origin_preload_url);
// When SplitCache is enabled and the prefetch resource and its headers are
// fetched with a modified IsolationInfo, the preload header resource must
// not be reusable by any other origin but its parent prefetch's.
// TODO(crbug.com/40093267): When SplitCache is enabled by default, get rid of
// the below conditional.
if (IsSplitCacheEnabled()) {
// Spin up another server, hosting a page with a preload header identical to
// the one in |target_path|.
const char* reuse_preload_attempt_path = "/reuse.html";
RegisterResponse(
reuse_preload_attempt_path,
ResponseEntry(
base::StringPrintf("<head><title>Other site</title><script "
"src='%s'></script></head>",
cross_origin_preload_url.spec().c_str()),
"text/html",
{{"link",
base::StringPrintf("<%s>;rel=\"preload\";as=\"script\"",
cross_origin_preload_url.spec().c_str())},
{"access-control-allow-origin", "*"}}));
std::unique_ptr<net::EmbeddedTestServer> other_cross_origin_server =
std::make_unique<net::EmbeddedTestServer>();
RegisterRequestHandler(other_cross_origin_server.get());
ASSERT_TRUE(other_cross_origin_server->Start());
// Navigate to a page on the above-created server. A request for the same
// preload header fetched earlier must not be reusable, and must hit the
// network.
EXPECT_TRUE(NavigateToURL(
shell(), other_cross_origin_server->GetURL(
"other3p.example", reuse_preload_attempt_path)));
preload_waiter_second_request.Run();
EXPECT_EQ(2, preload_request_counter_second_request->GetRequestCount());
// We won't need this server again.
EXPECT_TRUE(other_cross_origin_server->ShutdownAndWaitUntilComplete());
}
if (split_cache_test_case_ ==
SplitCacheTestCase::kEnabledTriplePlusCredsBool) {
// The navigation is requested with credentials, but the prefetch is
// requested anonymously. As a result of "SplitCacheByIncludeCredentials",
// those aren't considered the same for the HTTP cache. Early return.
// See the variant of this test in:
// PrefetchBrowserTest.CrossOriginWithPreloadCredentialled
return;
}
// Shutdown the servers.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
EXPECT_TRUE(cross_origin_server_->ShutdownAndWaitUntilComplete());
EXPECT_TRUE(ExecJs(shell()->web_contents(), "document.title = 'not done';"));
// Subsequent navigation to the target URL wouldn't hit the network for
// the target URL. The target content should still be read correctly.
NavigateToURLAndWaitTitle(cross_origin_target_url, "done");
}
// Regression test for crbug.com/357325599 - If a Link header with
// rel="preload" has as="document" (which is invalid), we shouldn't attempt to
// treat this as a rel="prefetch" as="document" and instead should just ignore
// the header.
// TODO(crbug.com/40256279): De-flake and enable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest,
DISABLED_CrossOriginWithInvalidPreloadAsDocument) {
const char* target_path = "/target.html";
const char* preload_path = "/preload.js";
RegisterResponse(
target_path,
ResponseEntry("<head><title>Prefetch Target</title><script "
"src=\"./preload.js\"></script></head>",
"text/html",
{{"link", "</preload.js>;rel=\"preload\";as=\"document\""},
{"access-control-allow-origin", "*"}}));
RegisterResponse(preload_path,
ResponseEntry("document.title=\"done\";", "text/javascript",
{{"cache-control", "public, max-age=600"}}));
auto target_request_counter =
RequestCounter::CreateAndMonitor(cross_origin_server_.get(), target_path);
auto preload_request_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), preload_path);
RegisterRequestHandler(cross_origin_server_.get());
base::RunLoop preload_waiter_second_request;
auto preload_request_counter_second_request =
RequestCounter::CreateAndMonitor(cross_origin_server_.get(), preload_path,
&preload_waiter_second_request);
ASSERT_TRUE(cross_origin_server_->Start());
const GURL cross_origin_target_url =
cross_origin_server_->GetURL("3p.example", target_path);
const char* prefetch_path = "/prefetch.html";
RegisterResponse(prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s' as='document' "
"crossorigin='anonymous'></body>",
cross_origin_target_url.spec().c_str())));
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
// Loading a page that prefetches the target URL would increment
// `target_request_counter` but not `preload_request_counter` because the
// preload header should be ignored.
base::test::TestFuture<void> prefetch_future;
RegisterPrefetchLoaderCallback(prefetch_future.GetCallback());
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
EXPECT_TRUE(prefetch_future.Wait());
EXPECT_EQ(1, target_request_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
EXPECT_EQ(0, preload_request_counter->GetRequestCount());
// Subsequent navigation to the target URL should result in the preloaded JS
// being served from the network.
NavigateToURLAndWaitTitle(cross_origin_target_url, "done");
EXPECT_EQ(1, preload_request_counter->GetRequestCount());
}
// Variants of this test:
// - PrefetchBrowserTest.CrossOriginWithPreloadAnonymous
// - PrefetchBrowserTest.CrossOriginWithPreloadCredentialled
// TODO(crbug.com/40256279): De-flake and re-enable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest,
DISABLED_CrossOriginWithPreloadCredentialled) {
ASSERT_TRUE(embedded_test_server()->InitializeAndListen());
const auto port = embedded_test_server()->port();
const char target_path[] = "/target.html";
const char preload_path[] = "/preload.js";
RegisterResponse(
target_path,
ResponseEntry("<head><title>Prefetch Target</title><script "
"src=\"./preload.js\"></script></head>",
"text/html",
{
{
"link",
"</preload.js>;rel=\"preload\";as=\"script\"",
},
{
"Access-Control-Allow-Origin",
"http://prefetch.com:" + base::NumberToString(port),
},
{
"Access-Control-Allow-Credentials",
"true",
},
}));
RegisterResponse(preload_path,
ResponseEntry("document.title=\"done\";", "text/javascript",
{{"cache-control", "public, max-age=600"}}));
base::RunLoop preload_waiter;
auto target_request_counter =
RequestCounter::CreateAndMonitor(cross_origin_server_.get(), target_path);
auto preload_request_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), preload_path, &preload_waiter);
RegisterRequestHandler(cross_origin_server_.get());
base::RunLoop preload_waiter_second_request;
auto preload_request_counter_second_request =
RequestCounter::CreateAndMonitor(cross_origin_server_.get(), preload_path,
&preload_waiter_second_request);
ASSERT_TRUE(cross_origin_server_->Start());
const GURL cross_origin_target_url =
cross_origin_server_->GetURL("3p.example", target_path);
const char* prefetch_path = "/prefetch.html";
RegisterResponse(prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s' as='document' "
"crossorigin='use-credentials'></body>",
cross_origin_target_url.spec().c_str())));
RegisterRequestHandler(embedded_test_server());
embedded_test_server()->StartAcceptingConnections();
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
// Loading a page that prefetches the target URL would increment both
// |target_request_counter| and |preload_request_counter|.
EXPECT_TRUE(NavigateToURL(
shell(), embedded_test_server()->GetURL("prefetch.com", prefetch_path)));
preload_waiter.Run();
EXPECT_EQ(1, target_request_counter->GetRequestCount());
EXPECT_EQ(1, preload_request_counter->GetRequestCount());
EXPECT_EQ(2, GetPrefetchURLLoaderCallCount());
GURL cross_origin_preload_url =
cross_origin_server_->GetURL("3p.example", preload_path);
WaitUntilLoaded(cross_origin_preload_url);
// Shutdown the servers.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
EXPECT_TRUE(cross_origin_server_->ShutdownAndWaitUntilComplete());
// Subsequent navigation to the target URL wouldn't hit the network for
// the target URL. The target content should still be read correctly.
NavigateToURLAndWaitTitle(cross_origin_target_url, "done");
}
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest, SignedExchangeWithPreload) {
const char* prefetch_path = "/prefetch.html";
const char* target_sxg_path = "/target.sxg";
const char* target_path = "/target.html";
const char* preload_path_in_sxg = "/preload.js";
RegisterResponse(
prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' href='%s'></body>", target_sxg_path)));
RegisterResponse(
target_sxg_path,
// We mock the SignedExchangeHandler, so just return a HTML content
// as "application/signed-exchange;v=b3".
ResponseEntry(MockSignedExchangeHandler::kMockSxgPrefix +
"<head><title>Prefetch Target (SXG)</title><script "
"src=\"./preload.js\"></script></head>",
"application/signed-exchange;v=b3",
{{"x-content-type-options", "nosniff"}}));
RegisterResponse(preload_path_in_sxg,
ResponseEntry("document.title=\"done\";", "text/javascript",
{{"cache-control", "public, max-age=600"}}));
base::RunLoop preload_waiter;
base::RunLoop prefetch_waiter;
auto target_request_counter = RequestCounter::CreateAndMonitor(
embedded_test_server(), target_sxg_path, &prefetch_waiter);
auto preload_request_counter = RequestCounter::CreateAndMonitor(
embedded_test_server(), preload_path_in_sxg, &preload_waiter);
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
const GURL preload_url_in_sxg =
embedded_test_server()->GetURL(preload_path_in_sxg);
const GURL target_sxg_url = embedded_test_server()->GetURL(target_sxg_path);
MockSignedExchangeHandlerFactory factory({MockSignedExchangeHandlerParams(
target_sxg_url, SignedExchangeLoadResult::kSuccess, net::OK,
GURL(embedded_test_server()->GetURL(target_path)), "text/html",
{{"Link", base::StringPrintf("<%s>;rel=\"preload\";as=\"script\"",
preload_url_in_sxg.spec().c_str())}},
net::SHA256HashValue({{0x00}}))});
ScopedSignedExchangeHandlerFactory scoped_factory(&factory);
// Loading a page that prefetches the target URL would increment both
// |target_request_counter| and |preload_request_counter|.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
prefetch_waiter.Run();
EXPECT_EQ(1, target_request_counter->GetRequestCount());
// If the header in the .sxg file is correctly extracted, we should
// be able to also see the preload.
preload_waiter.Run();
EXPECT_EQ(1, preload_request_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Shutdown the server.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
// Subsequent navigation to the target URL wouldn't hit the network for
// the target URL. The target content should still be read correctly.
NavigateToURLAndWaitTitle(target_sxg_url, "done");
}
// TODO(crbug.com/40256279): De-flake and re-enable.
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest,
DISABLED_CrossOriginSignedExchangeWithPreload) {
const char* prefetch_path = "/prefetch.html";
const char* target_sxg_path = "/target.sxg";
const char* target_path = "/target.html";
const char* preload_path_in_sxg = "/preload.js";
RegisterResponse(
target_sxg_path,
// We mock the SignedExchangeHandler, so just return a HTML content
// as "application/signed-exchange;v=b3".
ResponseEntry(MockSignedExchangeHandler::kMockSxgPrefix +
"<head><title>Prefetch Target (SXG)</title><script "
"src=\"./preload.js\"></script></head>",
"application/signed-exchange;v=b3",
{{"x-content-type-options", "nosniff"}}));
RegisterResponse(preload_path_in_sxg,
ResponseEntry("document.title=\"done\";", "text/javascript",
{{"cache-control", "public, max-age=600"}}));
base::RunLoop preload_waiter;
base::RunLoop prefetch_waiter;
auto target_request_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), target_sxg_path, &prefetch_waiter);
auto preload_request_counter = RequestCounter::CreateAndMonitor(
cross_origin_server_.get(), preload_path_in_sxg, &preload_waiter);
RegisterRequestHandler(cross_origin_server_.get());
ASSERT_TRUE(cross_origin_server_->Start());
const GURL target_sxg_url =
cross_origin_server_->GetURL("3p.example", target_sxg_path);
const GURL preload_url_in_sxg =
cross_origin_server_->GetURL("3p.example", preload_path_in_sxg);
RegisterResponse(
prefetch_path,
ResponseEntry(base::StringPrintf(
"<body><link rel='prefetch' as='document' href='%s'></body>",
target_sxg_url.spec().c_str())));
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
MockSignedExchangeHandlerFactory factory({MockSignedExchangeHandlerParams(
target_sxg_url, SignedExchangeLoadResult::kSuccess, net::OK,
GURL(cross_origin_server_->GetURL("3p.example", target_path)),
"text/html",
{{"Link", base::StringPrintf("<%s>;rel=\"preload\";as=\"script\"",
preload_url_in_sxg.spec().c_str())}},
net::SHA256HashValue({{0x00}}))});
ScopedSignedExchangeHandlerFactory scoped_factory(&factory);
// Loading a page that prefetches the target URL would increment both
// |target_request_counter| and |preload_request_counter|.
EXPECT_TRUE(
NavigateToURL(shell(), embedded_test_server()->GetURL(prefetch_path)));
prefetch_waiter.Run();
EXPECT_EQ(1, target_request_counter->GetRequestCount());
// If the header in the .sxg file is correctly extracted, we should
// be able to also see the preload.
preload_waiter.Run();
EXPECT_EQ(1, preload_request_counter->GetRequestCount());
EXPECT_EQ(2, GetPrefetchURLLoaderCallCount());
WaitUntilLoaded(preload_url_in_sxg);
// Shutdown the servers.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
EXPECT_TRUE(cross_origin_server_->ShutdownAndWaitUntilComplete());
// Subsequent navigation to the target URL wouldn't hit the network for
// the target URL. The target content should still be read correctly.
NavigateToURLAndWaitTitle(target_sxg_url, "done");
}
IN_PROC_BROWSER_TEST_P(PrefetchBrowserTest, FileToHttp) {
const char* target_path = "/target.html";
RegisterResponse(target_path,
ResponseEntry("<head><title>Prefetch Target</title></head>",
// The empty content type prevents this
// response from being blocked by ORB.
/*content_types=*/""));
base::RunLoop prefetch_waiter;
auto request_counter = RequestCounter::CreateAndMonitor(
embedded_test_server(), target_path, &prefetch_waiter);
RegisterRequestHandler(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
EXPECT_EQ(0, request_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
const GURL target_url = embedded_test_server()->GetURL(target_path);
{
base::ScopedAllowBlockingForTesting allow_blocking;
base::ScopedTempDir temp_dir;
ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
base::FilePath file_path = temp_dir.GetPath().AppendASCII("test.html");
std::string file_content = base::StringPrintf(
"<body><link rel='prefetch' as='document' href='%s'></body>",
target_url.spec().c_str());
ASSERT_TRUE(base::WriteFile(file_path, file_content));
// Loading a page that prefetches the target URL would increment the
// |request_counter|.
GURL file_url = net::FilePathToFileURL(file_path);
EXPECT_TRUE(NavigateToURL(shell(), file_url));
prefetch_waiter.Run();
EXPECT_EQ(1, request_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
}
switch (GetParam()) {
case SplitCacheTestCase::kDisabled:
case SplitCacheTestCase::kEnabledTripleKeyed:
case SplitCacheTestCase::kEnabledTriplePlusCredsBool:
case SplitCacheTestCase::kEnabledTriplePlusCrossSiteMainFrameNavBool:
// Shutdown the server.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
// Subsequent navigation to the target URL wouldn't hit the network for
// the target URL. The target content should still be read correctly.
NavigateToURLAndWaitTitle(target_url, "Prefetch Target");
break;
case SplitCacheTestCase::kEnabledTriplePlusMainFrameNavInitiator:
case SplitCacheTestCase::kEnabledTriplePlusNavInitiator:
// We don't expect re-use of the prefetched navigations because caching
// isn't supported when the initiator is opaque (when the initiator is
// incorporated into the cache key).
NavigateToURLAndWaitTitle(target_url, "Prefetch Target");
EXPECT_EQ(2, request_counter->GetRequestCount());
break;
}
}
class FencedFramePrefetchTest : public PrefetchBrowserTestBase {
public:
FencedFramePrefetchTest()
: cross_origin_server_(net::EmbeddedTestServer::TYPE_HTTPS) {}
void SetUpOnMainThread() override {
PrefetchBrowserTestBase::SetUpOnMainThread();
host_resolver()->AddRule("*", "127.0.0.1");
// Set up the embedded https test server for fenced frame which requires a
// secure context to load.
embedded_https_test_server().SetSSLConfig(
net::EmbeddedTestServer::CERT_TEST_NAMES);
SetupCrossSiteRedirector(&embedded_https_test_server());
net::test_server::RegisterDefaultHandlers(&embedded_https_test_server());
cross_origin_server()->SetSSLConfig(
net::EmbeddedTestServer::CERT_TEST_NAMES);
SetupCrossSiteRedirector(cross_origin_server());
net::test_server::RegisterDefaultHandlers(cross_origin_server());
}
content::test::FencedFrameTestHelper& fenced_frame_test_helper() {
return fenced_frame_test_helper_;
}
net::EmbeddedTestServer* cross_origin_server() {
return &cross_origin_server_;
}
private:
test::FencedFrameTestHelper fenced_frame_test_helper_;
net::EmbeddedTestServer cross_origin_server_;
};
// Verify that prefetch works in fenced frame.
IN_PROC_BROWSER_TEST_F(FencedFramePrefetchTest, BasicPrefetch) {
base::RunLoop prefetch_waiter;
auto request_counter = RequestCounter::CreateAndMonitor(
&embedded_https_test_server(), "/image.jpg", &prefetch_waiter);
RegisterRequestHandler(&embedded_https_test_server());
ASSERT_TRUE(embedded_https_test_server().Start());
EXPECT_EQ(0, request_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
GURL prefetch_url =
embedded_https_test_server().GetURL("a.test", "/image.jpg");
URLLoaderMonitor monitor({prefetch_url});
const GURL main_url =
embedded_https_test_server().GetURL("a.test", "/title1.html");
EXPECT_TRUE(NavigateToURL(shell(), main_url));
const GURL fenced_frame_url = embedded_https_test_server().GetURL(
"a.test", "/fenced_frames/title1.html");
RenderFrameHost* fenced_frame_rfh =
fenced_frame_test_helper().CreateFencedFrame(
shell()->web_contents()->GetPrimaryMainFrame(), fenced_frame_url);
// Loading a page that prefetches the URL would increment the
// |request_counter|.
TestFrameNavigationObserver observer(fenced_frame_rfh);
EXPECT_TRUE(ExecJs(shell()->web_contents()->GetPrimaryMainFrame(),
JsReplace(
R"(document.querySelector('fencedframe').config
= new FencedFrameConfig($1);)",
embedded_https_test_server().GetURL(
"a.test", "/link_rel_prefetch.html"))));
observer.WaitForCommit();
// Expect there is a prefetch request.
prefetch_waiter.Run();
monitor.WaitForUrls();
std::optional<network::ResourceRequest> request =
monitor.GetRequestInfo(prefetch_url);
EXPECT_TRUE(request->load_flags & net::LOAD_PREFETCH);
EXPECT_EQ(1, request_counter->GetRequestCount());
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Shutdown the server.
EXPECT_TRUE(embedded_https_test_server().ShutdownAndWaitUntilComplete());
}
// Test that after fenced frame disables untrusted network access, prefetch
// request is not allowed.
IN_PROC_BROWSER_TEST_F(FencedFramePrefetchTest, NetworkCutoffDisablesPrefetch) {
base::RunLoop prefetch_waiter;
auto request_counter = RequestCounter::CreateAndMonitor(
&embedded_https_test_server(), "/image.jpg", &prefetch_waiter);
RegisterRequestHandler(&embedded_https_test_server());
ASSERT_TRUE(embedded_https_test_server().Start());
EXPECT_EQ(0, request_counter->GetRequestCount());
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
GURL prefetch_url =
embedded_https_test_server().GetURL("a.test", "/image.jpg");
URLLoaderMonitor monitor({prefetch_url});
const GURL main_url =
embedded_https_test_server().GetURL("a.test", "/title1.html");
EXPECT_TRUE(NavigateToURL(shell(), main_url));
const GURL fenced_frame_url = embedded_https_test_server().GetURL(
"a.test", "/fenced_frames/title1.html");
RenderFrameHost* fenced_frame_rfh =
fenced_frame_test_helper().CreateFencedFrame(
shell()->web_contents()->GetPrimaryMainFrame(), fenced_frame_url);
// Loading a page that immediately disables untrusted network by calling
// `window.fence.disableUntrustedNetwork()`.
TestFrameNavigationObserver observer(fenced_frame_rfh);
EXPECT_TRUE(
ExecJs(shell()->web_contents()->GetPrimaryMainFrame(),
JsReplace(
R"(document.querySelector('fencedframe').config
= new FencedFrameConfig($1);)",
embedded_https_test_server().GetURL(
"a.test", "/link_rel_prefetch_disable_network.html"))));
observer.WaitForCommit();
// There should be no prefetch request because the untrusted network has been
// disabled.
prefetch_waiter.RunUntilIdle();
EXPECT_EQ(monitor.WaitForRequestCompletion(prefetch_url).error_code,
net::ERR_NETWORK_ACCESS_REVOKED);
EXPECT_EQ(0, request_counter->GetRequestCount());
// The `PrefetchURLLoader` count is 1 because the request did go through it.
// It was eventually blocked by the nonce network status check in
// `CorsURLLoaderFactory::CreateLoaderAndStart`.
EXPECT_EQ(1, GetPrefetchURLLoaderCallCount());
// Shutdown the server.
EXPECT_TRUE(embedded_https_test_server().ShutdownAndWaitUntilComplete());
}
// Similar to "PrefetchBrowserTest.CrossOriginWithPreloadCredentialled" but the
// test procedure takes place within a fenced frame.
// 1. Fenced frame navigates to `prefetch_path`.
// 2. The response to navigation triggers a prefetch request to
// `cross_origin_target_url`.
// 3. The response to prefetch triggers a recursive prefetch request to
// `preload_url`.
IN_PROC_BROWSER_TEST_F(FencedFramePrefetchTest,
CrossOriginWithPreloadCredentialled) {
ASSERT_TRUE(embedded_https_test_server().InitializeAndListen());
const auto port = embedded_https_test_server().port();
const char target_path[] = "/target.html";
const char preload_path[] = "/preload.js";
// Register the response to the recursive prefetch request.
RegisterResponse(preload_path,
ResponseEntry(/*content=*/"document.title=\"done\";",
/*content_types=*/"text/javascript",
/*headers=*/
{{"cache-control", "public, max-age=600"},
{"Supports-Loading-Mode", "fenced-frame"}}));
// Set up request counters.
auto target_request_counter =
RequestCounter::CreateAndMonitor(cross_origin_server(), target_path);
base::RunLoop preload_waiter;
auto preload_request_counter = RequestCounter::CreateAndMonitor(
cross_origin_server(), preload_path, &preload_waiter);
// Start cross origin server.
RegisterRequestHandler(cross_origin_server());
ASSERT_TRUE(cross_origin_server()->Start());
// Register the response to the navigation request.
const GURL cross_origin_target_url =
cross_origin_server()->GetURL("b.test", target_path);
const char* prefetch_path = "/prefetch.html";
RegisterResponse(
prefetch_path,
ResponseEntry(/*content=*/JsReplace(
R"(
<body>
<link rel='prefetch' href=$1 as='document'
crossorigin='use-credentials'>
</body>
)",
cross_origin_target_url),
/*content_types=*/"text/html",
/*headers=*/{{"Supports-Loading-Mode", "fenced-frame"}}));
RegisterRequestHandler(&embedded_https_test_server());
embedded_https_test_server().StartAcceptingConnections();
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
// Register the response to the initial prefetch request.
const GURL preload_url =
cross_origin_server()->GetURL("c.test", preload_path);
RegisterResponse(
target_path,
ResponseEntry(
/*content=*/JsReplace(R"(
<head>
<title>
Prefetch Target
</title>
<script src=$1></script>
</head>
)",
preload_url),
/*content_types=*/"text/html",
/*headers=*/
{{
"link",
base::StringPrintf("<%s>;rel=\"preload\";as=\"script\"",
preload_url.spec().c_str()),
},
{
"Access-Control-Allow-Origin",
"https://a.test:" + base::NumberToString(port),
},
{
"Access-Control-Allow-Credentials",
"true",
},
{"Supports-Loading-Mode", "fenced-frame"}}));
// Create the fenced frame.
const GURL main_url =
embedded_https_test_server().GetURL("a.test", "/title1.html");
EXPECT_TRUE(NavigateToURL(shell(), main_url));
const GURL fenced_frame_url = embedded_https_test_server().GetURL(
"a.test", "/fenced_frames/title1.html");
RenderFrameHost* fenced_frame_rfh =
fenced_frame_test_helper().CreateFencedFrame(
shell()->web_contents()->GetPrimaryMainFrame(), fenced_frame_url);
// Loading a page that prefetches the target URL would increment both
// |target_request_counter| and |preload_request_counter|.
TestFrameNavigationObserver observer(fenced_frame_rfh);
EXPECT_TRUE(ExecJs(
shell()->web_contents()->GetPrimaryMainFrame(),
JsReplace(
R"(document.querySelector('fencedframe').config
= new FencedFrameConfig($1);)",
embedded_https_test_server().GetURL("a.test", prefetch_path))));
observer.WaitForCommit();
// Expect there are two prefetch requests:
// 1. Navigation to `prefetch_path` which responses with a `link` element with
// `prefetch` attribute. This triggers a prefetch request.
// 2. The prefetch request from 1 to `cross_origin_target_url` gets a response
// with a `link` header with `preload` attribute. This is turned into a
// prefetch request because of the recursive prefetch token.
preload_waiter.Run();
EXPECT_EQ(1, target_request_counter->GetRequestCount());
EXPECT_EQ(1, preload_request_counter->GetRequestCount());
EXPECT_EQ(2, GetPrefetchURLLoaderCallCount());
// Shutdown the servers.
EXPECT_TRUE(embedded_https_test_server().ShutdownAndWaitUntilComplete());
EXPECT_TRUE(cross_origin_server()->ShutdownAndWaitUntilComplete());
}
// Similar to FencedFramePrefetchTest.CrossOriginWithPreloadCredentialled except
// the fenced frame disables its network with exemption of the first prefetch
// request url. This allows the first prefetch request to go through. However,
// the second prefetch request, which is changed from a preload request because
// of the recursive prefetch token, is blocked.
// TODO(crbug.com/336778624): This test is based on
// PrefetchBrowserTest.CrossOriginWithPreloadCredentialled, which is flaky. Once
// the flakiness is addressed, re-enable this test as well.
IN_PROC_BROWSER_TEST_F(FencedFramePrefetchTest,
DISABLED_NetworkCutoffDisablesRecursivePrefetch) {
ASSERT_TRUE(embedded_https_test_server().InitializeAndListen());
const auto port = embedded_https_test_server().port();
const char target_path[] = "/target.html";
const char preload_path[] = "/preload.js";
// Register the response to the recursive prefetch request.
RegisterResponse(preload_path,
ResponseEntry(/*content=*/"document.title=\"done\";",
/*content_types=*/"text/javascript",
/*headers=*/
{{"cache-control", "public, max-age=600"},
{"Supports-Loading-Mode", "fenced-frame"}}));
// Set up request counters.
auto target_request_counter =
RequestCounter::CreateAndMonitor(cross_origin_server(), target_path);
auto preload_request_counter =
RequestCounter::CreateAndMonitor(cross_origin_server(), preload_path);
// Start cross origin server.
RegisterRequestHandler(cross_origin_server());
ASSERT_TRUE(cross_origin_server()->Start());
// Register the response to the navigation request.
const GURL cross_origin_target_url =
cross_origin_server()->GetURL("b.test", target_path);
const char* prefetch_path = "/prefetch.html";
RegisterResponse(
prefetch_path,
ResponseEntry(/*content=*/JsReplace(
R"(
<body>
<link rel='prefetch' href=$1 as='document'
crossorigin='use-credentials'>
</body>
)",
cross_origin_target_url),
/*content_types=*/"text/html",
/*headers=*/
{{
"Access-Control-Allow-Origin",
"https://a.test:" + base::NumberToString(port),
},
{"Supports-Loading-Mode", "fenced-frame"}}));
RegisterRequestHandler(&embedded_https_test_server());
embedded_https_test_server().StartAcceptingConnections();
EXPECT_EQ(0, GetPrefetchURLLoaderCallCount());
// Register the response to the initial prefetch request.
const GURL preload_url =
cross_origin_server()->GetURL("c.test", preload_path);
RegisterResponse(
target_path,
ResponseEntry(
/*content=*/JsReplace(R"(
<head>
<title>
Prefetch Target
</title>
<script src=$1></script>
</head>
)",
preload_url),
/*content_types=*/"text/html",
/*headers=*/
{{
"link",
base::StringPrintf("<%s>;rel=\"preload\";as=\"script\"",
preload_url.spec().c_str()),
},
{
"Access-Control-Allow-Origin",
"https://a.test:" + base::NumberToString(port),
},
{
"Access-Control-Allow-Credentials",
"true",
},
{"Supports-Loading-Mode", "fenced-frame"}}));
// Create the fenced frame.
const GURL main_url =
embedded_https_test_server().GetURL("a.test", "/title1.html");
EXPECT_TRUE(NavigateToURL(shell(), main_url));
const GURL fenced_frame_url = embedded_https_test_server().GetURL(
"a.test", "/fenced_frames/title1.html");
RenderFrameHost* fenced_frame_rfh =
fenced_frame_test_helper().CreateFencedFrame(
shell()->web_contents()->GetPrimaryMainFrame(), fenced_frame_url);
// This callback is invoked when the first `PrefetchURLLoader` is created.
// This is needed because once fenced frame commits the navigation, it gets
// a new nonce. The network revocation call needs to take place after the
// navigation but before the prefetch request is sent.
RegisterPrefetchLoaderCallback(base::BindLambdaForTesting([&]() {
// Disable fenced frame untrusted network but exempt
// `cross_origin_target_url`. This allows the prefetch request to this url.
// Note the exemption must be done first, otherwise the in-progress prefetch
// request to `cross_origin_target_url` will be blocked.
RenderFrameHost* rfh =
test::FencedFrameTestHelper::GetMostRecentlyAddedFencedFrame(
shell()->web_contents()->GetPrimaryMainFrame());
test::ExemptUrlsFromFencedFrameNetworkRevocation(rfh,
{cross_origin_target_url});
EXPECT_TRUE(ExecJs(rfh, R"(
(async () => {
return window.fence.disableUntrustedNetwork();
})();
)"));
}));
// Monitor requests to `preload_url`.
URLLoaderMonitor monitor({preload_url});
// Navigate the fenced frame.
TestFrameNavigationObserver observer(fenced_frame_rfh);
EXPECT_TRUE(ExecJs(
shell()->web_contents()->GetPrimaryMainFrame(),
JsReplace(
R"(document.querySelector('fencedframe').config
= new FencedFrameConfig($1);)",
embedded_https_test_server().GetURL("a.test", prefetch_path))));
observer.WaitForCommit();
// There should only be one prefetch request to `cross_origin_target_url`.
// The recursive prefetch request is blocked because the fenced frame has
// disabled its network and the request destination `preload_url` is not
// exempted.
EXPECT_EQ(monitor.WaitForRequestCompletion(preload_url).error_code,
net::ERR_NETWORK_ACCESS_REVOKED);
EXPECT_EQ(1, target_request_counter->GetRequestCount());
EXPECT_EQ(0, preload_request_counter->GetRequestCount());
// The `PrefetchURLLoader` is still called twice because the request did go
// through it. The recursive prefetch request was eventually blocked by the
// nonce network status check in `CorsURLLoaderFactory::CreateLoaderAndStart`.
EXPECT_EQ(2, GetPrefetchURLLoaderCallCount());
// Shutdown the servers.
EXPECT_TRUE(embedded_https_test_server().ShutdownAndWaitUntilComplete());
EXPECT_TRUE(cross_origin_server()->ShutdownAndWaitUntilComplete());
}
INSTANTIATE_TEST_SUITE_P(
All,
PrefetchBrowserTest,
testing::ValuesIn(
{SplitCacheTestCase::kDisabled, SplitCacheTestCase::kEnabledTripleKeyed,
SplitCacheTestCase::kEnabledTriplePlusCredsBool,
SplitCacheTestCase::kEnabledTriplePlusCrossSiteMainFrameNavBool,
SplitCacheTestCase::kEnabledTriplePlusMainFrameNavInitiator,
SplitCacheTestCase::kEnabledTriplePlusNavInitiator}),
[](const testing::TestParamInfo<SplitCacheTestCase>& info) {
switch (info.param) {
case SplitCacheTestCase::kDisabled:
return "SplitCacheDisabled";
case SplitCacheTestCase::kEnabledTripleKeyed:
return "SplitCacheEnabledTripleKeyed";
case SplitCacheTestCase::kEnabledTriplePlusCredsBool:
return "SplitCacheEnabledTriplePlusCredsBool";
case SplitCacheTestCase::kEnabledTriplePlusCrossSiteMainFrameNavBool:
return "SplitCacheEnabledTriplePlusCrossSiteMainFrameNavigationBool";
case SplitCacheTestCase::kEnabledTriplePlusMainFrameNavInitiator:
return "SplitCacheEnabledTriplePlusMainFrameNavigationInitiator";
case SplitCacheTestCase::kEnabledTriplePlusNavInitiator:
return "SplitCacheEnabledTriplePlusNavigationInitiator";
}
});
INSTANTIATE_TEST_SUITE_P(PrefetchBrowserTestPrivacyChanges,
PrefetchBrowserTestPrivacyChanges,
testing::Bool());
} // namespace content