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// Copyright 2012 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/ui/webui/ash/cryptohome/cryptohome_web_ui_handler.h"
#include <numeric>
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/values.h"
#include "chromeos/ash/components/dbus/cryptohome/rpc.pb.h"
#include "chromeos/ash/components/dbus/dbus_thread_manager.h"
#include "chromeos/ash/components/dbus/userdataauth/cryptohome_pkcs11_client.h"
#include "chromeos/ash/components/dbus/userdataauth/userdataauth_client.h"
#include "chromeos/ash/components/login/auth/auth_factor_editor.h"
#include "chromeos/ash/components/login/auth/public/cryptohome_key_constants.h"
#include "chromeos/dbus/tpm_manager/tpm_manager_client.h"
#include "components/user_manager/user_manager.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_ui.h"
#include "crypto/nss_util.h"
using content::BrowserThread;
namespace ash {
namespace {
// Maximal number of RecoveryId entries we want to display.
constexpr int kRecoveryIdHistoryDepth = 5;
void ForwardToUIThread(base::OnceCallback<void(bool)> ui_callback,
bool result) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(std::move(ui_callback), result));
}
user_data_auth::GetAuthFactorExtendedInfoRequest
GenerateAuthFactorExtendedInfoRequest(int depth) {
user_data_auth::GetAuthFactorExtendedInfoRequest req;
user_data_auth::RecoveryExtendedInfoRequest req_extended_info;
const user_manager::User* primary_user =
user_manager::UserManager::Get()->GetPrimaryUser();
if (primary_user) {
*req.mutable_account_id() =
cryptohome::CreateAccountIdentifierFromAccountId(
primary_user->GetAccountId());
*req.mutable_auth_factor_label() = kCryptohomeRecoveryKeyLabel;
req_extended_info.set_max_depth(depth);
*req.mutable_recovery_info_request() = std::move(req_extended_info);
}
return req;
}
} // namespace
CryptohomeWebUIHandler::CryptohomeWebUIHandler() = default;
CryptohomeWebUIHandler::~CryptohomeWebUIHandler() = default;
void CryptohomeWebUIHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback(
"pageLoaded", base::BindRepeating(&CryptohomeWebUIHandler::OnPageLoaded,
weak_ptr_factory_.GetWeakPtr()));
}
void CryptohomeWebUIHandler::OnPageLoaded(const base::Value::List& args) {
UserDataAuthClient* userdataauth_client = UserDataAuthClient::Get();
CryptohomePkcs11Client* cryptohome_pkcs11_client =
CryptohomePkcs11Client::Get();
userdataauth_client->IsMounted(
user_data_auth::IsMountedRequest(),
base::BindOnce(&CryptohomeWebUIHandler::OnIsMounted,
weak_ptr_factory_.GetWeakPtr()));
chromeos::TpmManagerClient::Get()->GetTpmNonsensitiveStatus(
::tpm_manager::GetTpmNonsensitiveStatusRequest(),
base::BindOnce(&CryptohomeWebUIHandler::OnGetTpmStatus,
weak_ptr_factory_.GetWeakPtr()));
cryptohome_pkcs11_client->Pkcs11IsTpmTokenReady(
user_data_auth::Pkcs11IsTpmTokenReadyRequest(),
base::BindOnce(&CryptohomeWebUIHandler::OnPkcs11IsTpmTokenReady,
weak_ptr_factory_.GetWeakPtr()));
user_data_auth::GetAuthFactorExtendedInfoRequest req =
GenerateAuthFactorExtendedInfoRequest(kRecoveryIdHistoryDepth);
userdataauth_client->GetAuthFactorExtendedInfo(
req, base::BindOnce(&CryptohomeWebUIHandler::OnGetAuthFactorExtendedInfo,
weak_ptr_factory_.GetWeakPtr()));
auto ui_callback =
base::BindOnce(&CryptohomeWebUIHandler::GotIsTPMTokenEnabledOnUIThread,
weak_ptr_factory_.GetWeakPtr());
content::GetIOThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&crypto::IsTPMTokenEnabled,
base::BindOnce(&ForwardToUIThread,
std::move(ui_callback))));
}
void CryptohomeWebUIHandler::GotIsTPMTokenEnabledOnUIThread(
bool is_tpm_token_enabled) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
base::Value is_tpm_token_enabled_value(is_tpm_token_enabled);
SetCryptohomeProperty("is-tpm-token-ready",
std::move(is_tpm_token_enabled_value));
}
void CryptohomeWebUIHandler::OnGetTpmStatus(
const ::tpm_manager::GetTpmNonsensitiveStatusReply& reply) {
if (reply.status() != ::tpm_manager::STATUS_SUCCESS) {
LOG(ERROR) << "Failed to get TPM status; status: " << reply.status();
return;
}
// It also means TPM is ready if tpm manager reports TPM is owned.
SetCryptohomeProperty("tpm-is-ready", base::Value(reply.is_owned()));
SetCryptohomeProperty("tpm-is-enabled", base::Value(reply.is_enabled()));
SetCryptohomeProperty("tpm-is-owned", base::Value(reply.is_owned()));
SetCryptohomeProperty("has-reset-lock-permissions",
base::Value(reply.has_reset_lock_permissions()));
}
void CryptohomeWebUIHandler::OnGetAuthFactorExtendedInfo(
std::optional<user_data_auth::GetAuthFactorExtendedInfoReply> reply) {
std::string recovery_ids = "<empty>";
if (reply.has_value() &&
!reply->recovery_info_reply().recovery_ids().empty()) {
recovery_ids =
std::accumulate(reply->recovery_info_reply().recovery_ids().begin(),
reply->recovery_info_reply().recovery_ids().end(),
std::string(), [](std::string ss, std::string s) {
return ss.empty() ? s : ss + " " + s;
});
}
std::string recovery_seed = "<empty>";
if (reply.has_value() &&
!reply->recovery_info_reply().recovery_seed().empty()) {
recovery_seed = reply->recovery_info_reply().recovery_seed();
}
SetCryptohomeProperty("recovery_seed", base::Value(recovery_seed));
SetCryptohomeProperty("recovery_ids", base::Value(recovery_ids));
}
void CryptohomeWebUIHandler::OnIsMounted(
std::optional<user_data_auth::IsMountedReply> reply) {
bool mounted = false;
if (reply.has_value()) {
mounted = reply->is_mounted();
}
SetCryptohomeProperty("is-mounted", base::Value(mounted));
}
void CryptohomeWebUIHandler::OnPkcs11IsTpmTokenReady(
std::optional<user_data_auth::Pkcs11IsTpmTokenReadyReply> reply) {
bool ready = false;
if (reply.has_value()) {
ready = reply->ready();
}
SetCryptohomeProperty("pkcs11-is-tpm-token-ready", base::Value(ready));
}
void CryptohomeWebUIHandler::SetCryptohomeProperty(
const std::string& destination_id,
const base::Value& value) {
base::Value destination_id_value(destination_id);
web_ui()->CallJavascriptFunctionUnsafe("SetCryptohomeProperty",
destination_id_value, value);
}
} // namespace ash
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