trezor: support new passphrase entry mechanism

- passphrase can be prompted also when wallet is running (thus added to the wallet listener)
- device/host decision is now made on the host

src/libwalletqt/PassphraseHelper.cpp

@@ -0,0 +1,70 @@
+// Copyright (c) 2014-2020, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "PassphraseHelper.h"
+#include <QMutexLocker>
+#include <QDebug>
+
+Monero::optional<std::string> PassphraseHelper::onDevicePassphraseRequest(bool & on_device)
+{
+    qDebug() << __FUNCTION__;
+    QMutexLocker locker(&m_mutex_pass);
+    m_passphrase_on_device = true;
+    m_passphrase_abort = false;
+
+    if (m_prompter != nullptr){
+        m_prompter->onWalletPassphraseNeeded(on_device);
+    }
+
+    m_cond_pass.wait(&m_mutex_pass);
+
+    if (m_passphrase_abort)
+    {
+        throw std::runtime_error("Passphrase entry abort");
+    }
+
+    on_device = m_passphrase_on_device;
+    if (!on_device) {
+        auto tmpPass = m_passphrase.toStdString();
+        m_passphrase = QString();
+        return Monero::optional<std::string>(tmpPass);
+    } else {
+        return Monero::optional<std::string>();
+    }
+}
+
+void PassphraseHelper::onPassphraseEntered(const QString &passphrase, bool enter_on_device, bool entry_abort)
+{
+    qDebug() << __FUNCTION__;
+    QMutexLocker locker(&m_mutex_pass);
+    m_passphrase = passphrase;
+    m_passphrase_abort = entry_abort;
+    m_passphrase_on_device = enter_on_device;
+
+    m_cond_pass.wakeAll();
+}