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// Copyright 2013 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/ash/net/client_cert_store_ash.h"
#include <cert.h>
#include <algorithm>
#include <iterator>
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/location.h"
#include "base/task/thread_pool.h"
#include "base/threading/scoped_blocking_call.h"
#include "chrome/browser/ash/net/client_cert_filter.h"
#include "chrome/browser/certificate_provider/certificate_provider.h"
#include "crypto/nss_crypto_module_delegate.h"
#include "net/ssl/ssl_cert_request_info.h"
#include "net/ssl/ssl_private_key.h"
namespace ash {
ClientCertStoreAsh::ClientCertStoreAsh(
std::unique_ptr<chromeos::CertificateProvider> cert_provider,
bool use_system_slot,
const std::string& username_hash,
const PasswordDelegateFactory& password_delegate_factory)
: cert_provider_(std::move(cert_provider)),
cert_filter_(base::MakeRefCounted<ClientCertFilter>(use_system_slot,
username_hash)) {}
ClientCertStoreAsh::~ClientCertStoreAsh() = default;
void ClientCertStoreAsh::GetClientCerts(
scoped_refptr<const net::SSLCertRequestInfo> cert_request_info,
ClientCertListCallback callback) {
base::OnceCallback<void(net::ClientCertIdentityList)>
get_platform_certs_and_filter = base::BindOnce(
&ClientCertStoreAsh::GotAdditionalCerts, weak_factory_.GetWeakPtr(),
std::move(cert_request_info), std::move(callback));
auto split_callback = base::SplitOnceCallback(base::BindOnce(
&ClientCertStoreAsh::GetAdditionalCertsAndContinue,
weak_factory_.GetWeakPtr(), std::move(get_platform_certs_and_filter)));
if (cert_filter_->Init(std::move(split_callback.first))) {
std::move(split_callback.second).Run();
}
}
void ClientCertStoreAsh::GotAdditionalCerts(
scoped_refptr<const net::SSLCertRequestInfo> request,
ClientCertListCallback callback,
net::ClientCertIdentityList additional_certs) {
scoped_refptr<crypto::CryptoModuleBlockingPasswordDelegate> password_delegate;
if (!password_delegate_factory_.is_null())
password_delegate = password_delegate_factory_.Run(request->host_and_port);
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE,
{base::MayBlock(), base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(&ClientCertStoreAsh::GetAndFilterCertsOnWorkerThread,
cert_filter_, password_delegate, std::move(request),
std::move(additional_certs)),
base::BindOnce(&ClientCertStoreAsh::OnClientCertsResponse,
weak_factory_.GetWeakPtr(), std::move(callback)));
}
void ClientCertStoreAsh::GetAdditionalCertsAndContinue(
base::OnceCallback<void(net::ClientCertIdentityList)> callback) {
if (cert_provider_) {
cert_provider_->GetCertificates(
base::BindOnce(&ClientCertStoreAsh::OnClientCertsResponse,
weak_factory_.GetWeakPtr(), std::move(callback)));
} else {
std::move(callback).Run(net::ClientCertIdentityList());
}
}
void ClientCertStoreAsh::OnClientCertsResponse(
ClientCertListCallback callback,
net::ClientCertIdentityList identities) {
std::move(callback).Run(std::move(identities));
}
// static
net::ClientCertIdentityList ClientCertStoreAsh::GetAndFilterCertsOnWorkerThread(
scoped_refptr<ClientCertFilter> cert_filter,
scoped_refptr<crypto::CryptoModuleBlockingPasswordDelegate>
password_delegate,
scoped_refptr<const net::SSLCertRequestInfo> request,
net::ClientCertIdentityList additional_certs) {
// This method may acquire the NSS lock or reenter this code via extension
// hooks (such as smart card UI). To ensure threads are not starved or
// deadlocked, the base::ScopedBlockingCall below increments the thread pool
// capacity if this method takes too much time to run.
base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
base::BlockingType::MAY_BLOCK);
net::ClientCertIdentityList client_certs;
net::ClientCertStoreNSS::GetPlatformCertsOnWorkerThread(
std::move(password_delegate),
// This use of base::Unretained is safe because the callback is called
// synchronously.
base::BindRepeating(&ClientCertFilter::IsCertAllowed,
base::Unretained(cert_filter.get())),
&client_certs);
client_certs.reserve(client_certs.size() + additional_certs.size());
for (std::unique_ptr<net::ClientCertIdentity>& cert : additional_certs)
client_certs.push_back(std::move(cert));
net::ClientCertStoreNSS::FilterCertsOnWorkerThread(&client_certs, *request);
return client_certs;
}
} // namespace ash
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