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// Copyright 2013 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.
#ifndef CHROME_BROWSER_UI_CRYPTO_MODULE_DELEGATE_NSS_H_
#define CHROME_BROWSER_UI_CRYPTO_MODULE_DELEGATE_NSS_H_
#include <string>
#include "base/compiler_specific.h"
#include "base/synchronization/waitable_event.h"
#include "chrome/browser/ui/crypto_module_password_dialog.h"
#include "crypto/nss_crypto_module_delegate.h"
namespace content {
class ResourceContext;
}
// Delegate to handle unlocking a slot or indicating which slot to store a key
// in. When passing to NSS functions which take a wincx argument, use the value
// returned from the wincx() method.
class ChromeNSSCryptoModuleDelegate
: public crypto::NSSCryptoModuleDelegate {
public:
// Create a ChromeNSSCryptoModuleDelegate. |reason| is used to select what
// string to show the user, |server| is displayed to indicate which connection
// is causing the dialog to appear.
ChromeNSSCryptoModuleDelegate(chrome::CryptoModulePasswordReason reason,
const std::string& server);
virtual ~ChromeNSSCryptoModuleDelegate();
// Must be called on IO thread. Returns true if the delegate is ready for use.
// Otherwise, if |initialization_complete_callback| is non-null, the
// initialization will proceed asynchronously and the callback will be run
// once the delegate is ready to use. In that case, the caller must ensure the
// delegate remains alive until the callback is run.
bool InitializeSlot(content::ResourceContext* context,
const base::Closure& initialization_complete_callback)
WARN_UNUSED_RESULT;
// crypto::NSSCryptoModuleDelegate implementation.
virtual crypto::ScopedPK11Slot RequestSlot() OVERRIDE;
// crypto::CryptoModuleBlockingPasswordDelegate implementation.
virtual std::string RequestPassword(const std::string& slot_name,
bool retry,
bool* cancelled) OVERRIDE;
private:
void ShowDialog(const std::string& slot_name, bool retry);
void GotPassword(const std::string& password);
void DidGetSlot(const base::Closure& callback, crypto::ScopedPK11Slot slot);
// Parameters displayed in the dialog.
const chrome::CryptoModulePasswordReason reason_;
const std::string server_;
// Event to block worker thread while waiting for dialog on UI thread.
base::WaitableEvent event_;
// Stores the results from the dialog for access on worker thread.
std::string password_;
bool cancelled_;
// The slot which will be returned by RequestSlot.
crypto::ScopedPK11Slot slot_;
DISALLOW_COPY_AND_ASSIGN(ChromeNSSCryptoModuleDelegate);
};
// Create a delegate which only handles unlocking slots.
crypto::CryptoModuleBlockingPasswordDelegate*
CreateCryptoModuleBlockingPasswordDelegate(
chrome::CryptoModulePasswordReason reason,
const std::string& server);
#endif // CHROME_BROWSER_UI_CRYPTO_MODULE_DELEGATE_NSS_H_
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