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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/macros.h"
#include "base/synchronization/waitable_event.h"
#include "chrome/browser/ui/crypto_module_password_dialog.h"
#include "crypto/nss_crypto_module_delegate.h"
#include "net/base/host_port_pair.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. |slot| can be NULL.
ChromeNSSCryptoModuleDelegate(chrome::CryptoModulePasswordReason reason,
const net::HostPortPair& server,
crypto::ScopedPK11Slot slot);
~ChromeNSSCryptoModuleDelegate() override;
// Must be called on IO thread. Creates a delegate and returns it
// synchronously or asynchronously to |callback|. If the delegate could not be
// created, |callback| is called with NULL.
static void CreateForResourceContext(
chrome::CryptoModulePasswordReason reason,
const net::HostPortPair& server,
content::ResourceContext* context,
const base::Callback<
void(std::unique_ptr<ChromeNSSCryptoModuleDelegate>)>& callback);
// crypto::NSSCryptoModuleDelegate implementation.
crypto::ScopedPK11Slot RequestSlot() override;
// crypto::CryptoModuleBlockingPasswordDelegate implementation.
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);
// Parameters displayed in the dialog.
const chrome::CryptoModulePasswordReason reason_;
net::HostPortPair 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 net::HostPortPair& server);
#endif // CHROME_BROWSER_UI_CRYPTO_MODULE_DELEGATE_NSS_H_
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