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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/webauth/virtual_authenticator.h"
#include <utility>
#include "base/bind.h"
#include "base/guid.h"
#include "crypto/ec_private_key.h"
#include "device/fido/fido_parsing_utils.h"
#include "device/fido/public_key_credential_rp_entity.h"
#include "device/fido/public_key_credential_user_entity.h"
#include "device/fido/virtual_ctap2_device.h"
#include "device/fido/virtual_u2f_device.h"
namespace content {
VirtualAuthenticator::VirtualAuthenticator(
::device::ProtocolVersion protocol,
::device::FidoTransportProtocol transport,
::device::AuthenticatorAttachment attachment,
bool has_resident_key,
bool has_user_verification)
: protocol_(protocol),
attachment_(attachment),
has_resident_key_(has_resident_key),
has_user_verification_(has_user_verification),
unique_id_(base::GenerateGUID()),
state_(base::MakeRefCounted<::device::VirtualFidoDevice::State>()) {
state_->transport = transport;
// If the authenticator has user verification, simulate having set it up
// already.
state_->fingerprints_enrolled = has_user_verification_;
SetUserPresence(true);
}
VirtualAuthenticator::~VirtualAuthenticator() = default;
void VirtualAuthenticator::AddReceiver(
mojo::PendingReceiver<blink::test::mojom::VirtualAuthenticator> receiver) {
receiver_set_.Add(this, std::move(receiver));
}
bool VirtualAuthenticator::AddRegistration(
std::vector<uint8_t> key_handle,
const std::string& rp_id,
const std::vector<uint8_t>& private_key,
int32_t counter) {
auto ec_private_key =
crypto::ECPrivateKey::CreateFromPrivateKeyInfo(private_key);
if (!ec_private_key)
return false;
return state_->registrations
.emplace(
std::move(key_handle),
::device::VirtualFidoDevice::RegistrationData(
std::move(ec_private_key),
::device::fido_parsing_utils::CreateSHA256Hash(rp_id), counter))
.second;
}
bool VirtualAuthenticator::AddResidentRegistration(
std::vector<uint8_t> key_handle,
std::string rp_id,
const std::vector<uint8_t>& private_key,
int32_t counter,
std::vector<uint8_t> user_handle) {
auto ec_private_key =
crypto::ECPrivateKey::CreateFromPrivateKeyInfo(private_key);
if (!ec_private_key)
return false;
return state_->InjectResidentKey(
std::move(key_handle),
device::PublicKeyCredentialRpEntity(std::move(rp_id)),
device::PublicKeyCredentialUserEntity(std::move(user_handle)), counter,
std::move(ec_private_key));
}
void VirtualAuthenticator::ClearRegistrations() {
state_->registrations.clear();
}
bool VirtualAuthenticator::RemoveRegistration(
const std::vector<uint8_t>& key_handle) {
return state_->registrations.erase(key_handle) != 0;
}
void VirtualAuthenticator::SetUserPresence(bool is_user_present) {
is_user_present_ = is_user_present;
state_->simulate_press_callback = base::BindRepeating(
[](bool is_user_present, device::VirtualFidoDevice* device) {
return is_user_present;
},
is_user_present);
}
std::unique_ptr<::device::FidoDevice> VirtualAuthenticator::ConstructDevice() {
switch (protocol_) {
case ::device::ProtocolVersion::kU2f:
return std::make_unique<::device::VirtualU2fDevice>(state_);
case ::device::ProtocolVersion::kCtap2: {
device::VirtualCtap2Device::Config config;
config.resident_key_support = has_resident_key_;
config.internal_uv_support = has_user_verification_;
config.is_platform_authenticator =
attachment_ == ::device::AuthenticatorAttachment::kPlatform;
config.user_verification_succeeds = is_user_verified_;
return std::make_unique<::device::VirtualCtap2Device>(state_, config);
}
default:
NOTREACHED();
return std::make_unique<::device::VirtualU2fDevice>(state_);
}
}
void VirtualAuthenticator::GetUniqueId(GetUniqueIdCallback callback) {
std::move(callback).Run(unique_id_);
}
void VirtualAuthenticator::GetRegistrations(GetRegistrationsCallback callback) {
std::vector<blink::test::mojom::RegisteredKeyPtr> mojo_registered_keys;
for (const auto& registration : state_->registrations) {
auto mojo_registered_key = blink::test::mojom::RegisteredKey::New();
mojo_registered_key->key_handle = registration.first;
mojo_registered_key->counter = registration.second.counter;
mojo_registered_key->rp_id =
registration.second.rp ? registration.second.rp->id : "";
registration.second.private_key->ExportPrivateKey(
&mojo_registered_key->private_key);
mojo_registered_keys.push_back(std::move(mojo_registered_key));
}
std::move(callback).Run(std::move(mojo_registered_keys));
}
void VirtualAuthenticator::AddRegistration(
blink::test::mojom::RegisteredKeyPtr registration,
AddRegistrationCallback callback) {
std::move(callback).Run(AddRegistration(
std::move(registration->key_handle), std::move(registration->rp_id),
registration->private_key, registration->counter));
}
void VirtualAuthenticator::ClearRegistrations(
ClearRegistrationsCallback callback) {
ClearRegistrations();
std::move(callback).Run();
}
void VirtualAuthenticator::RemoveRegistration(
const std::vector<uint8_t>& key_handle,
RemoveRegistrationCallback callback) {
std::move(callback).Run(RemoveRegistration(std::move(key_handle)));
}
void VirtualAuthenticator::SetUserVerified(bool verified,
SetUserVerifiedCallback callback) {
is_user_verified_ = verified;
std::move(callback).Run();
}
} // namespace content
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