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// Copyright (c) 2012 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.
#include "chrome/browser/ui/crypto_module_password_dialog.h"
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/strings/utf_string_conversions.h"
#include "base/synchronization/waitable_event.h"
#include "content/public/browser/browser_thread.h"
#include "crypto/crypto_module_blocking_password_delegate.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "url/gurl.h"
using content::BrowserThread;
namespace chrome {
namespace {
class CryptoModuleBlockingDialogDelegate
: public crypto::CryptoModuleBlockingPasswordDelegate {
public:
CryptoModuleBlockingDialogDelegate(CryptoModulePasswordReason reason,
const std::string& server)
: event_(false, false),
reason_(reason),
server_(server),
cancelled_(false) {
}
virtual ~CryptoModuleBlockingDialogDelegate() {
// Make sure we clear the password in memory.
password_.replace(0, password_.size(), password_.size(), 0);
}
// crypto::CryptoModuleBlockingDialogDelegate implementation.
virtual std::string RequestPassword(const std::string& slot_name,
bool retry,
bool* cancelled) OVERRIDE {
DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(!event_.IsSignaled());
event_.Reset();
if (BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&CryptoModuleBlockingDialogDelegate::ShowDialog,
// We block on event_ until the task completes, so
// there's no need to ref-count.
base::Unretained(this),
slot_name,
retry))) {
event_.Wait();
}
*cancelled = cancelled_;
return password_;
}
private:
void ShowDialog(const std::string& slot_name,
bool retry) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
ShowCryptoModulePasswordDialog(
slot_name, retry, reason_, server_,
base::Bind(&CryptoModuleBlockingDialogDelegate::GotPassword,
// We block on event_ until the task completes, so
// there's no need to ref-count.
base::Unretained(this)));
}
void GotPassword(const char* password) {
if (password)
password_ = password;
else
cancelled_ = true;
event_.Signal();
}
base::WaitableEvent event_;
CryptoModulePasswordReason reason_;
std::string server_;
std::string password_;
bool cancelled_;
DISALLOW_COPY_AND_ASSIGN(CryptoModuleBlockingDialogDelegate);
};
} // namespace
crypto::CryptoModuleBlockingPasswordDelegate*
NewCryptoModuleBlockingDialogDelegate(CryptoModulePasswordReason reason,
const std::string& server) {
return new CryptoModuleBlockingDialogDelegate(reason, server);
}
} // namespace chrome
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