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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/protocol/session_authz_reauthorizer.h"
#include <memory>
#include <string_view>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/test/gmock_callback_support.h"
#include "base/test/mock_callback.h"
#include "base/test/task_environment.h"
#include "base/time/time.h"
#include "net/base/backoff_entry.h"
#include "net/http/http_status_code.h"
#include "remoting/base/http_status.h"
#include "remoting/base/mock_session_authz_service_client.h"
#include "remoting/proto/session_authz_service.h"
#include "remoting/protocol/errors.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace remoting::protocol {
namespace {
using testing::_;
constexpr std::string_view kSessionId = "fake_session_id";
constexpr std::string_view kInitialReauthToken = "fake_initial_reauth_token";
constexpr base::TimeDelta kInitialTokenLifetime = base::Minutes(10);
auto Respond(std::string_view session_reauth_token,
base::TimeDelta session_reauth_token_lifetime) {
auto response = std::make_unique<internal::ReauthorizeHostResponseStruct>();
response->session_reauth_token = session_reauth_token;
response->session_reauth_token_lifetime = session_reauth_token_lifetime;
return base::test::RunOnceCallback<2>(HttpStatus::OK(), std::move(response));
}
template <typename CodeType>
auto RespondError(CodeType code) {
return base::test::RunOnceCallbackRepeatedly<2>(HttpStatus(code), nullptr);
}
} // namespace
class SessionAuthzReauthorizerTest : public testing::Test {
public:
SessionAuthzReauthorizerTest();
~SessionAuthzReauthorizerTest() override;
protected:
auto ResetReauthorizer();
base::test::TaskEnvironment task_environment_{
base::test::TaskEnvironment::TimeSource::MOCK_TIME};
base::MockCallback<SessionAuthzReauthorizer::OnReauthorizationFailedCallback>
on_reauthorization_failed_callback_;
std::unique_ptr<SessionAuthzReauthorizer> reauthorizer_;
MockSessionAuthzServiceClient service_client_;
};
SessionAuthzReauthorizerTest::SessionAuthzReauthorizerTest() {
reauthorizer_ = std::make_unique<SessionAuthzReauthorizer>(
&service_client_, kSessionId, kInitialReauthToken, kInitialTokenLifetime,
on_reauthorization_failed_callback_.Get());
reauthorizer_->Start();
}
SessionAuthzReauthorizerTest::~SessionAuthzReauthorizerTest() = default;
auto SessionAuthzReauthorizerTest::ResetReauthorizer() {
return [&]() { reauthorizer_.reset(); };
}
TEST_F(SessionAuthzReauthorizerTest, MultipleSuccessfulReauths) {
// Reauth is not triggered before half of the token lifetime has passed.
EXPECT_CALL(service_client_, ReauthorizeHost(_, _, _)).Times(0);
task_environment_.FastForwardBy(kInitialTokenLifetime / 2 -
base::Seconds(10));
// Reauth is triggered now.
EXPECT_CALL(service_client_,
ReauthorizeHost(kInitialReauthToken, kSessionId, _))
.WillOnce(Respond("fake_second_reauth_token", base::Minutes(8)));
task_environment_.FastForwardBy(base::Seconds(10));
EXPECT_CALL(service_client_, ReauthorizeHost(_, _, _)).Times(0);
task_environment_.FastForwardBy(base::Minutes(4) - base::Seconds(10));
EXPECT_CALL(service_client_,
ReauthorizeHost("fake_second_reauth_token", kSessionId, _))
.WillOnce(Respond("fake_third_reauth_token", base::Minutes(6)));
task_environment_.FastForwardBy(base::Seconds(10));
}
TEST_F(SessionAuthzReauthorizerTest,
ReauthFailedWithNonretriableError_ClosesSession) {
EXPECT_CALL(service_client_,
ReauthorizeHost(kInitialReauthToken, kSessionId, _))
.WillOnce(RespondError(net::HTTP_FORBIDDEN));
EXPECT_CALL(on_reauthorization_failed_callback_,
Run(HttpStatus::Code::PERMISSION_DENIED, _))
.WillOnce(ResetReauthorizer());
task_environment_.FastForwardBy(kInitialTokenLifetime / 2);
}
TEST_F(SessionAuthzReauthorizerTest, RetryReauthAndSucceed) {
EXPECT_CALL(service_client_,
ReauthorizeHost(kInitialReauthToken, kSessionId, _))
.WillRepeatedly(RespondError(net::ERR_INTERNET_DISCONNECTED));
task_environment_.FastForwardBy(kInitialTokenLifetime / 2);
const net::BackoffEntry* backoff_entry =
reauthorizer_->GetBackoffEntryForTest();
task_environment_.FastForwardBy(backoff_entry->GetTimeUntilRelease());
task_environment_.FastForwardBy(backoff_entry->GetTimeUntilRelease());
EXPECT_CALL(service_client_,
ReauthorizeHost(kInitialReauthToken, kSessionId, _))
.WillOnce(Respond("fake_second_reauth_token", base::Minutes(8)));
task_environment_.FastForwardBy(backoff_entry->GetTimeUntilRelease());
EXPECT_CALL(service_client_,
ReauthorizeHost("fake_second_reauth_token", kSessionId, _))
.WillOnce(Respond("fake_third_reauth_token", base::Minutes(6)));
task_environment_.FastForwardBy(base::Minutes(4));
}
TEST_F(SessionAuthzReauthorizerTest, RetriesExceedTokenLifetime_ClosesSession) {
EXPECT_CALL(service_client_,
ReauthorizeHost(kInitialReauthToken, kSessionId, _))
.WillRepeatedly(RespondError(net::ERR_INTERNET_DISCONNECTED));
EXPECT_CALL(on_reauthorization_failed_callback_, Run(_, _)).Times(0);
task_environment_.FastForwardBy(kInitialTokenLifetime / 2);
const net::BackoffEntry* backoff_entry =
reauthorizer_->GetBackoffEntryForTest();
task_environment_.FastForwardBy(backoff_entry->GetTimeUntilRelease());
task_environment_.FastForwardBy(backoff_entry->GetTimeUntilRelease());
EXPECT_CALL(on_reauthorization_failed_callback_,
Run(HttpStatus::Code::NETWORK_ERROR, _))
.WillOnce(ResetReauthorizer());
task_environment_.FastForwardBy(kInitialTokenLifetime / 2);
}
} // namespace remoting::protocol
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