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// Copyright 2019 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/webauth/authenticator_environment.h"
#include <algorithm>
#include <utility>
#include "base/containers/contains.h"
#include "base/no_destructor.h"
#include "base/not_fatal_until.h"
#include "content/browser/webauth/virtual_authenticator.h"
#include "content/browser/webauth/virtual_discovery.h"
#include "content/browser/webauth/virtual_fido_discovery_factory.h"
#include "content/public/browser/scoped_authenticator_environment_for_testing.h"
#include "device/fido/fido_discovery_factory.h"
namespace content {
ScopedAuthenticatorEnvironmentForTesting::
ScopedAuthenticatorEnvironmentForTesting(
std::unique_ptr<device::FidoDiscoveryFactory> factory) {
AuthenticatorEnvironment* impl = AuthenticatorEnvironment::GetInstance();
CHECK(impl->MaybeGetDiscoveryFactoryTestOverride() == nullptr);
impl->ReplaceDefaultDiscoveryFactoryForTesting(std::move(factory));
}
ScopedAuthenticatorEnvironmentForTesting::
~ScopedAuthenticatorEnvironmentForTesting() {
AuthenticatorEnvironment* impl = AuthenticatorEnvironment::GetInstance();
CHECK(impl->MaybeGetDiscoveryFactoryTestOverride() != nullptr);
impl->ReplaceDefaultDiscoveryFactoryForTesting(nullptr);
}
// static
AuthenticatorEnvironment* AuthenticatorEnvironment::GetInstance() {
static base::NoDestructor<AuthenticatorEnvironment> environment;
return environment.get();
}
AuthenticatorEnvironment::AuthenticatorEnvironment() = default;
AuthenticatorEnvironment::~AuthenticatorEnvironment() = default;
void AuthenticatorEnvironment::Reset() {
for (const auto& pair : virtual_authenticator_managers_) {
pair.first->RemoveObserver(this);
}
virtual_authenticator_managers_.clear();
replaced_discovery_factory_.reset();
}
void AuthenticatorEnvironment::EnableVirtualAuthenticatorFor(
FrameTreeNode* node,
bool enable_ui) {
// Do not create a new virtual authenticator if there is one already defined
// for the |node|.
if (base::Contains(virtual_authenticator_managers_, node)) {
return;
}
node->AddObserver(this);
auto virtual_authenticator_manager =
std::make_unique<VirtualAuthenticatorManagerImpl>();
virtual_authenticator_manager->enable_ui(enable_ui);
virtual_authenticator_managers_[node] =
std::move(virtual_authenticator_manager);
}
void AuthenticatorEnvironment::DisableVirtualAuthenticatorFor(
FrameTreeNode* node) {
if (!base::Contains(virtual_authenticator_managers_, node)) {
return;
}
node->RemoveObserver(this);
virtual_authenticator_managers_.erase(node);
}
bool AuthenticatorEnvironment::IsVirtualAuthenticatorEnabledFor(
FrameTreeNode* node) {
return MaybeGetVirtualAuthenticatorManager(node) != nullptr;
}
VirtualAuthenticatorManagerImpl*
AuthenticatorEnvironment::MaybeGetVirtualAuthenticatorManager(
FrameTreeNode* node) {
for (; node; node = FrameTreeNode::From(node->parent())) {
if (base::Contains(virtual_authenticator_managers_, node)) {
return virtual_authenticator_managers_[node].get();
}
}
return nullptr;
}
bool AuthenticatorEnvironment::HasVirtualUserVerifyingPlatformAuthenticator(
FrameTreeNode* node) {
VirtualAuthenticatorManagerImpl* authenticator_manager =
MaybeGetVirtualAuthenticatorManager(node);
if (!authenticator_manager) {
return false;
}
std::vector<VirtualAuthenticator*> authenticators =
authenticator_manager->GetAuthenticators();
return std::ranges::any_of(authenticators, [](VirtualAuthenticator* a) {
return a->is_user_verifying_platform_authenticator();
});
}
device::FidoDiscoveryFactory*
AuthenticatorEnvironment::MaybeGetDiscoveryFactoryTestOverride() {
return replaced_discovery_factory_.get();
}
void AuthenticatorEnvironment::ReplaceDefaultDiscoveryFactoryForTesting(
std::unique_ptr<device::FidoDiscoveryFactory> factory) {
replaced_discovery_factory_ = std::move(factory);
}
void AuthenticatorEnvironment::OnFrameTreeNodeDestroyed(FrameTreeNode* node) {
DisableVirtualAuthenticatorFor(node);
}
} // namespace content
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