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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/ui/crypto_module_delegate_nss.h"
#include <utility>
#include "base/functional/bind.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread_restrictions.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
ChromeNSSCryptoModuleDelegate::ChromeNSSCryptoModuleDelegate(
CryptoModulePasswordReason reason,
const net::HostPortPair& server)
: reason_(reason),
server_(server),
event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
base::WaitableEvent::InitialState::NOT_SIGNALED),
cancelled_(false) {}
ChromeNSSCryptoModuleDelegate::~ChromeNSSCryptoModuleDelegate() = default;
std::string ChromeNSSCryptoModuleDelegate::RequestPassword(
const std::string& slot_name,
bool retry,
bool* cancelled) {
DCHECK(!event_.IsSignaled());
event_.Reset();
if (content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&ChromeNSSCryptoModuleDelegate::ShowDialog,
// This method blocks on |event_| until the task
// completes, so there's no need to ref-count.
base::Unretained(this), slot_name, retry))) {
// This should always be invoked on a worker sequence with the
// base::MayBlock() trait.
base::ScopedAllowBaseSyncPrimitives allow_wait;
event_.Wait();
}
*cancelled = cancelled_;
return password_;
}
void ChromeNSSCryptoModuleDelegate::ShowDialog(const std::string& slot_name,
bool retry) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
ShowCryptoModulePasswordDialog(
slot_name, retry, reason_, server_.host(),
nullptr, // TODO(mattm): Supply parent window.
base::BindOnce(&ChromeNSSCryptoModuleDelegate::GotPassword,
// RequestPassword is blocked on |event_| until GotPassword
// is called, so there's no need to ref-count.
base::Unretained(this)));
}
void ChromeNSSCryptoModuleDelegate::GotPassword(const std::string& password) {
if (!password.empty()) {
password_ = password;
} else {
cancelled_ = true;
}
event_.Signal();
}
crypto::CryptoModuleBlockingPasswordDelegate*
CreateCryptoModuleBlockingPasswordDelegate(CryptoModulePasswordReason reason,
const net::HostPortPair& server) {
return new ChromeNSSCryptoModuleDelegate(reason, server);
}
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