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// 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 "content/browser/renderer_host/pepper/pepper_proxy_lookup_helper.h"
#include <memory>
#include <optional>
#include <string>
#include "base/check_op.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "base/run_loop.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/test/browser_task_environment.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "net/base/net_errors.h"
#include "net/proxy_resolution/proxy_info.h"
#include "services/network/public/mojom/proxy_lookup_client.mojom.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
namespace content {
namespace {
constexpr char kTestURL[] = "http://foo/";
class PepperProxyLookupHelperTest : public testing::Test {
public:
PepperProxyLookupHelperTest() = default;
~PepperProxyLookupHelperTest() override = default;
// Initializes |lookup_helper_| on the IO thread, and starts it there. Returns
// once it has called into LookUpProxyForURLOnUIThread on the UI thread.
void StartLookup() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
base::RunLoop run_loop;
GetIOThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&PepperProxyLookupHelperTest::StartLookupOnIOThread,
base::Unretained(this), run_loop.QuitClosure()));
run_loop.Run();
EXPECT_TRUE(lookup_helper_);
if (!fail_to_start_request_)
EXPECT_TRUE(proxy_lookup_client_);
}
// Takes the |mojo::Remote<ProxyLookupClient>| passed by |lookup_helper_| to
// LookUpProxyForURLOnUIThread(). May only be called after |lookup_helper_|
// has successfully called into LookUpProxyForURLOnUIThread().
mojo::Remote<network::mojom::ProxyLookupClient> ClaimProxyLookupClient() {
EXPECT_TRUE(proxy_lookup_client_);
return std::move(proxy_lookup_client_);
}
void DestroyLookupHelper() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
base::RunLoop run_loop;
GetIOThreadTaskRunner({})->PostTaskAndReply(
FROM_HERE,
base::BindOnce(
&PepperProxyLookupHelperTest::DestroyLookupHelperOnIOThread,
base::Unretained(this)),
run_loop.QuitClosure());
run_loop.Run();
}
// Waits for |lookup_helper_| to call into OnLookupCompleteOnIOThread(),
// signally proxy lookup completion.
void WaitForLookupCompletion() {
EXPECT_TRUE(lookup_helper_);
lookup_complete_run_loop_.Run();
}
// Get the proxy information passed into OnLookupCompleteOnIOThread().
const std::optional<net::ProxyInfo>& proxy_info() const {
return proxy_info_;
}
// Setting this to true will make LookUpProxyForURLOnUIThread, the callback
// invoked to start looking up the proxy, return false.
void set_fail_to_start_request(bool fail_to_start_request) {
fail_to_start_request_ = fail_to_start_request;
}
private:
// Must be called on the IO thread. Initializes |lookup_helper_| and starts a
// proxy lookup. Invokes |closure| on the UI thread once the |lookup_helper_|
// has invoked LookUpProxyForURLOnUIThread on the UI thread.
void StartLookupOnIOThread(base::OnceClosure closure) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(!lookup_helper_);
lookup_helper_ = std::make_unique<PepperProxyLookupHelper>();
lookup_helper_->Start(
GURL(kTestURL),
base::BindOnce(
&PepperProxyLookupHelperTest::LookUpProxyForURLOnUIThread,
base::Unretained(this), std::move(closure)),
base::BindOnce(&PepperProxyLookupHelperTest::OnLookupCompleteOnIOThread,
base::Unretained(this)));
}
// Callback passed to |lookup_helper_| to start the proxy lookup.
bool LookUpProxyForURLOnUIThread(
base::OnceClosure closure,
const GURL& url,
mojo::PendingRemote<network::mojom::ProxyLookupClient>
proxy_lookup_client) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
std::move(closure).Run();
if (fail_to_start_request_)
return false;
EXPECT_EQ(GURL(kTestURL), url);
proxy_lookup_client_.Bind(std::move(proxy_lookup_client));
return true;
}
// Invoked by |lookup_helper_| on the IO thread once the proxy lookup has
// completed.
void OnLookupCompleteOnIOThread(std::optional<net::ProxyInfo> proxy_info) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
proxy_info_ = std::move(proxy_info);
lookup_helper_.reset();
lookup_complete_run_loop_.Quit();
}
void DestroyLookupHelperOnIOThread() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
lookup_helper_.reset();
}
BrowserTaskEnvironment task_environment_;
bool fail_to_start_request_ = false;
std::unique_ptr<PepperProxyLookupHelper> lookup_helper_;
std::optional<net::ProxyInfo> proxy_info_;
mojo::Remote<network::mojom::ProxyLookupClient> proxy_lookup_client_;
base::RunLoop lookup_complete_run_loop_;
};
TEST_F(PepperProxyLookupHelperTest, Success) {
StartLookup();
net::ProxyInfo proxy_info_response;
proxy_info_response.UseNamedProxy("result:80");
ClaimProxyLookupClient()->OnProxyLookupComplete(net::OK, proxy_info_response);
WaitForLookupCompletion();
ASSERT_TRUE(proxy_info());
EXPECT_EQ("PROXY result:80", proxy_info()->ToDebugString());
}
// Basic failure case - an error is passed to the PepperProxyLookupHelper
// through the ProxyLookupClient API.
TEST_F(PepperProxyLookupHelperTest, Failure) {
StartLookup();
ClaimProxyLookupClient()->OnProxyLookupComplete(net::ERR_FAILED,
std::nullopt);
WaitForLookupCompletion();
EXPECT_FALSE(proxy_info());
}
// The mojo pipe is closed before the PepperProxyLookupHelper's callback is
// invoked.
TEST_F(PepperProxyLookupHelperTest, PipeClosed) {
StartLookup();
ClaimProxyLookupClient().reset();
WaitForLookupCompletion();
EXPECT_FALSE(proxy_info());
}
// The proxy lookup fails to start - instead, the callback to start the lookup
// returns false.
TEST_F(PepperProxyLookupHelperTest, FailToStartRequest) {
set_fail_to_start_request(true);
StartLookup();
WaitForLookupCompletion();
EXPECT_FALSE(proxy_info());
}
// Destroy the helper before it completes a lookup. Make sure it cancels the
// connection, and memory tools don't detect a leak.
TEST_F(PepperProxyLookupHelperTest, DestroyBeforeComplete) {
StartLookup();
base::RunLoop run_loop;
mojo::Remote<network::mojom::ProxyLookupClient> proxy_lookup_client =
ClaimProxyLookupClient();
proxy_lookup_client.set_disconnect_handler(run_loop.QuitClosure());
DestroyLookupHelper();
run_loop.Run();
}
} // namespace
} // namespace content
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