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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 "content/browser/browsing_data/conditional_cache_deletion_helper.h"
#include <algorithm>
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "base/functional/bind.h"
#include "base/strings/string_number_conversions.h"
#include "base/synchronization/waitable_event.h"
#include "base/test/test_timeouts.h"
#include "base/threading/platform_thread.h"
#include "build/build_config.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/storage_partition.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/shell/browser/shell.h"
#include "net/disk_cache/disk_cache.h"
#include "net/dns/mock_host_resolver.h"
#include "net/http/http_cache.h"
#include "services/network/public/mojom/clear_data_filter.mojom.h"
#include "services/network/public/mojom/network_context.mojom.h"
namespace content {
class ConditionalCacheDeletionHelperBrowserTest : public ContentBrowserTest {
public:
void SetUpOnMainThread() override {
host_resolver()->AddRule("*", "127.0.0.1");
ASSERT_TRUE(embedded_test_server()->Start());
}
void TearDownOnMainThread() override {}
bool TestCacheEntry(const GURL& url) {
return LoadBasicRequest(storage_partition()->GetNetworkContext(), url,
net::LOAD_ONLY_FROM_CACHE |
net::LOAD_SKIP_CACHE_VALIDATION) == net::OK;
}
void CreateCacheEntries(const std::set<GURL>& urls) {
for (auto& url : urls) {
ASSERT_EQ(net::OK, LoadBasicRequest(
storage_partition()->GetNetworkContext(), url));
}
// Wait for the entries to be written. There is no callback for this action
// being completed, only scheduled. Therefore, we need to continuously poll
// every |tiny_timeout|. However, wait at most |action_timeout| for this
// action to be performed.
base::Time start = base::Time::Now();
bool all_entries_written = false;
// TODO(crbug.com/41492111): `base::test::RunUntil` times out on mac.
while (base::Time::Now() - start < TestTimeouts::action_timeout()) {
all_entries_written = true;
for (auto& url : urls) {
if (!TestCacheEntry(url)) {
all_entries_written = false;
break;
}
}
if (all_entries_written)
break;
base::PlatformThread::Sleep(TestTimeouts::tiny_timeout());
}
ASSERT_TRUE(all_entries_written)
<< "Unable to write cache entries. The deletion test can't proceed.";
}
void CompareRemainingKeys(const std::set<GURL>& expected_urls,
const std::set<GURL>& erase_urls) {
for (auto& url : expected_urls)
EXPECT_TRUE(TestCacheEntry(url));
for (auto& url : erase_urls)
EXPECT_FALSE(TestCacheEntry(url));
}
void DoneCallback(int value) {
DCHECK_GE(value, 0); // Negative values represent an error.
DCHECK_CURRENTLY_ON(BrowserThread::IO);
waitable_event_->Signal();
}
void WaitForTasksOnIOThread() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
waitable_event_->Wait();
}
StoragePartition* storage_partition() {
return browser_context()->GetDefaultStoragePartition();
}
private:
BrowserContext* browser_context() {
return shell()->web_contents()->GetBrowserContext();
}
base::OnceCallback<void(int)> done_callback_;
std::unique_ptr<base::WaitableEvent> waitable_event_;
};
// Tests that ConditionalCacheDeletionHelper only deletes those cache entries
// that match the condition.
IN_PROC_BROWSER_TEST_F(ConditionalCacheDeletionHelperBrowserTest, Condition) {
std::set<GURL> urls = {
embedded_test_server()->GetURL("foo.com", "/title1.html"),
embedded_test_server()->GetURL("bar.com", "/title1.html"),
embedded_test_server()->GetURL("baz.com", "/title1.html"),
embedded_test_server()->GetURL("qux.com", "/title1.html")};
CreateCacheEntries(urls);
std::set<GURL> erase_urls = {
embedded_test_server()->GetURL("bar.com", "/title1.html"),
embedded_test_server()->GetURL("baz.com", "/title1.html"),
};
for (auto& url : erase_urls)
urls.erase(url);
network::mojom::ClearDataFilterPtr filter =
network::mojom::ClearDataFilter::New();
filter->type = network::mojom::ClearDataFilter::Type::DELETE_MATCHES;
for (auto& url : erase_urls)
filter->origins.push_back(url::Origin::Create(url));
base::RunLoop run_loop;
storage_partition()->GetNetworkContext()->ClearHttpCache(
base::Time(), base::Time::Max(), std::move(filter),
run_loop.QuitClosure());
run_loop.Run();
CompareRemainingKeys(urls, erase_urls);
}
// Tests that ConditionalCacheDeletionHelper correctly constructs a condition
// for time and URL.
// crbug.com/1010102: fails on win.
#if BUILDFLAG(IS_WIN)
#define MAYBE_TimeAndURL DISABLED_TimeAndURL
#else
#define MAYBE_TimeAndURL TimeAndURL
#endif
IN_PROC_BROWSER_TEST_F(ConditionalCacheDeletionHelperBrowserTest,
MAYBE_TimeAndURL) {
// Create some entries.
std::set<GURL> urls = {
embedded_test_server()->GetURL("foo.com", "/title1.html"),
embedded_test_server()->GetURL("example.com", "/title1.html"),
embedded_test_server()->GetURL("bar.com", "/title1.html")};
CreateCacheEntries(urls);
// Wait a short time after writing the entries.
// This assures that future entries will have timestamps strictly greater than
// the ones we just added.
base::PlatformThread::Sleep(TestTimeouts::tiny_timeout());
base::Time now = base::Time::Now();
// Create a few more entries with a later timestamp.
std::set<GURL> newer_urls = {
embedded_test_server()->GetURL("foo.com", "/simple_page.html"),
embedded_test_server()->GetURL("example.com", "/title2.html"),
embedded_test_server()->GetURL("example.com", "/title3.html"),
embedded_test_server()->GetURL("example2.com", "/simple_page.html")};
CreateCacheEntries(newer_urls);
// Create a condition for entries with the "http://example.com" origin
// created after waiting.
network::mojom::ClearDataFilterPtr filter =
network::mojom::ClearDataFilter::New();
filter->type = network::mojom::ClearDataFilter::Type::DELETE_MATCHES;
filter->origins.push_back(
url::Origin::Create(embedded_test_server()->GetURL("example.com", "/")));
base::RunLoop run_loop;
storage_partition()->GetNetworkContext()->ClearHttpCache(
now, base::Time::Max(), std::move(filter), run_loop.QuitClosure());
run_loop.Run();
// Expect that only "title2.html" and "title3.html" were deleted.
std::set<GURL> erase_urls = {
embedded_test_server()->GetURL("example.com", "/title2.html"),
embedded_test_server()->GetURL("example.com", "/title3.html"),
};
for (auto& url : newer_urls)
urls.insert(url);
for (auto& url : erase_urls)
urls.erase(url);
CompareRemainingKeys(urls, erase_urls);
}
} // namespace content
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