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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/webauthn/password_credential_controller.h"
#include <iterator>
#include <memory>
#include <string>
#include <utility>
#include "base/check.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/password_manager/chrome_password_manager_client.h"
#include "chrome/browser/ui/passwords/passwords_model_delegate.h"
#include "chrome/browser/webauthn/authenticator_request_dialog_model.h"
#include "components/password_manager/core/browser/form_fetcher.h"
#include "components/password_manager/core/browser/form_fetcher_impl.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/web_contents.h"
using content::GlobalRenderFrameHostId;
using content::RenderFrameHost;
using content::WebContents;
using password_manager::PasswordForm;
using password_manager::PasswordFormDigest;
namespace {
PasswordFormDigest GetSynthesizedFormForUrl(GURL url) {
PasswordFormDigest digest{PasswordForm::Scheme::kHtml, std::string(), url};
digest.signon_realm = digest.url.spec();
return digest;
}
password_manager::PasswordManagerClient* GetPasswordManagerClient(
RenderFrameHost& render_frame_host) {
WebContents* web_contents =
WebContents::FromRenderFrameHost(&render_frame_host);
if (!web_contents) {
return nullptr;
}
return ChromePasswordManagerClient::FromWebContents(web_contents);
}
std::u16string GetAuthenticationMessage(std::string_view rp_id) {
#if BUILDFLAG(IS_LINUX)
return u"";
#else
return l10n_util::GetStringFUTF16(IDS_PASSWORD_MANAGER_FILLING_REAUTH,
base::UTF8ToUTF16(rp_id));
#endif // BUILDFLAG(IS_LINUX)
}
} // namespace
PasswordCredentialController::PasswordCredentialController(
GlobalRenderFrameHostId render_frame_host_id,
AuthenticatorRequestDialogModel* model)
: render_frame_host_id_(render_frame_host_id), model_(model) {
model_observer_.Observe(model_);
}
PasswordCredentialController::~PasswordCredentialController() = default;
void PasswordCredentialController::FetchPasswords(
const GURL& url,
PasswordCredentialsReceivedCallback callback) {
callback_ = std::move(callback);
form_fetcher_ = GetFormFetcher(url);
form_fetcher_->Fetch();
form_fetcher_->AddConsumer(this);
}
bool PasswordCredentialController::IsAuthRequired() {
// TODO(crbug.com/392549444): For the prototype, require screen lock only if
// it's enabled (e.g. via PWM settings). This may change.
auto* pwm_client = GetPasswordManagerClient(*GetRenderFrameHost());
return pwm_client && pwm_client->GetPasswordFeatureManager()
->IsBiometricAuthenticationBeforeFillingEnabled();
}
void PasswordCredentialController::SetPasswordSelectedCallback(
content::AuthenticatorRequestClientDelegate::PasswordSelectedCallback
callback) {
password_selected_callback_ = callback;
}
void PasswordCredentialController::OnPasswordCredentialSelected(
PasswordCredentialPair password) {
if (!IsAuthRequired() || model_->local_auth_token.has_value()) {
password_selected_callback_.Run(password_manager::CredentialInfo(
password_manager::CredentialType::CREDENTIAL_TYPE_PASSWORD,
password.first, password.first, GURL(), password.second,
url::SchemeHostPort()));
return;
}
filling_password_ = std::move(password);
model_->SetStep(AuthenticatorRequestDialogModel::Step::kPasswordOsAuth);
}
void PasswordCredentialController::OnStepTransition() {
if (model_->step() ==
AuthenticatorRequestDialogModel::Step::kPasswordOsAuth) {
CHECK(filling_password_.has_value());
auto manage_passwords_ui_controller = PasswordsModelDelegateFromWebContents(
WebContents::FromRenderFrameHost(GetRenderFrameHost()));
if (!manage_passwords_ui_controller) {
return;
}
manage_passwords_ui_controller->AuthenticateUserWithMessage(
GetAuthenticationMessage(model_->relying_party_id),
base::BindOnce(&PasswordCredentialController::OnAuthenticationCompleted,
weak_ptr_factory_.GetWeakPtr(),
std::move(filling_password_.value())));
return;
}
}
void PasswordCredentialController::OnFetchCompleted() {
CHECK(!callback_.is_null());
PasswordCredentials credentials;
std::ranges::transform(form_fetcher_->GetBestMatches(),
std::back_inserter(credentials),
[](const PasswordForm& form) {
return std::make_unique<PasswordForm>(form);
});
std::erase_if(credentials, [](const std::unique_ptr<PasswordForm>& form) {
return form->IsFederatedCredential() || form->username_value.empty();
});
std::move(callback_).Run(std::move(credentials));
}
std::unique_ptr<password_manager::FormFetcher>
PasswordCredentialController::GetFormFetcher(const GURL& url) {
return std::make_unique<password_manager::FormFetcherImpl>(
GetSynthesizedFormForUrl(url),
GetPasswordManagerClient(*GetRenderFrameHost()),
/*should_migrate_http_passwords=*/false);
}
RenderFrameHost* PasswordCredentialController::GetRenderFrameHost() const {
RenderFrameHost* ret = RenderFrameHost::FromID(render_frame_host_id_);
CHECK(ret);
return ret;
}
void PasswordCredentialController::OnAuthenticationCompleted(
PasswordCredentialPair password,
bool success) {
if (!success) {
model_->CancelAuthenticatorRequest();
return;
}
password_selected_callback_.Run(password_manager::CredentialInfo(
password_manager::CredentialType::CREDENTIAL_TYPE_PASSWORD,
password.first, password.first, GURL(), password.second,
url::SchemeHostPort()));
}
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