SSH: Support encrypted private keys in PKCS8 format.

Change-Id: I2fd10c1992442317b3ba7a7012f66a328930ef84
Reviewed-on: http://codereview.qt.nokia.com/2349
Reviewed-by: Christian Kandeler <christian.kandeler@nokia.com>

src/libs/utils/ssh/sshcryptofacility.cpp

@@ -36,6 +36,7 @@
 #include "sshcapabilities_p.h"
 #include "sshexception_p.h"
 #include "sshkeyexchange_p.h"
+#include "sshkeypasswordretriever_p.h"
 #include "sshpacket_p.h"
 
 #include <botan/ber_dec.h>
@@ -226,7 +227,7 @@ void SshEncryptionFacility::createAuthenticationKeyFromPKCS8(const QByteArray &p
     Pipe pipe;
     pipe.process_msg(convertByteArray(privKeyFileContents),
         privKeyFileContents.size());
-    Private_Key * const key = PKCS8::load_key(pipe, m_rng);
+    Private_Key * const key = PKCS8::load_key(pipe, m_rng, SshKeyPasswordRetriever());
     if (DSA_PrivateKey * const dsaKey = dynamic_cast<DSA_PrivateKey *>(key)) {
         m_authKeyAlgoName = SshCapabilities::PubKeyDss;
         m_authKey.reset(dsaKey);

src/libs/utils/ssh/sshkeypasswordretriever.cpp

@@ -0,0 +1,54 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (info@qt.nokia.com)
+**
+**
+** GNU Lesser General Public License Usage
+**
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this file.
+** Please review the following information to ensure the GNU Lesser General
+** Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** Other Usage
+**
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at info@qt.nokia.com.
+**
+**************************************************************************/
+#include "sshkeypasswordretriever_p.h"
+
+#include <QtCore/QCoreApplication>
+#include <QtCore/QString>
+#include <QtGui/QInputDialog>
+
+namespace Utils {
+namespace Internal {
+
+std::string SshKeyPasswordRetriever::get_passphrase(const std::string &, const std::string &,
+    UI_Result &result) const
+{
+    bool ok;
+    const QString &password = QInputDialog::getText(0,
+        QCoreApplication::translate("Utils::Ssh", "Password required"),
+        QCoreApplication::translate("Utils::Ssh", "Please enter the password for your private key."),
+        QLineEdit::Password, QString(), &ok);
+    result = ok ? OK : CANCEL_ACTION;
+    return std::string(password.toLocal8Bit().data());
+}
+
+} // namespace Internal
+} // namespace Utils

src/libs/utils/ssh/sshkeypasswordretriever_p.h

@@ -0,0 +1,52 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (info@qt.nokia.com)
+**
+**
+** GNU Lesser General Public License Usage
+**
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this file.
+** Please review the following information to ensure the GNU Lesser General
+** Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** Other Usage
+**
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at info@qt.nokia.com.
+**
+**************************************************************************/
+#ifndef KEYPASSWORDRETRIEVER_H
+#define KEYPASSWORDRETRIEVER_H
+
+#include <botan/ui.h>
+
+#include <string>
+
+namespace Utils {
+namespace Internal {
+
+class SshKeyPasswordRetriever : public Botan::User_Interface
+{
+public:
+    std::string get_passphrase(const std::string &what, const std::string &source,
+        UI_Result &result) const;
+};
+
+} // namespace Internal
+} // namespace Utils
+
+#endif // KEYPASSWORDRETRIEVER_H

src/libs/utils/utils-lib.pri

@@ -86,6 +86,7 @@ SOURCES += $$PWD/environment.cpp \
     $$PWD/ssh/sftpchannel.cpp \
     $$PWD/ssh/sshremoteprocessrunner.cpp \
     $$PWD/ssh/sshconnectionmanager.cpp \
+    $$PWD/ssh/sshkeypasswordretriever.cpp \
     $$PWD/outputformatter.cpp \
     $$PWD/flowlayout.cpp \
     $$PWD/networkaccessmanager.cpp
@@ -187,6 +188,7 @@ HEADERS += \
     $$PWD/ssh/sshremoteprocessrunner.h \
     $$PWD/ssh/sshconnectionmanager.h \
     $$PWD/ssh/sshpseudoterminal.h \
+    $$PWD/ssh/sshkeypasswordretriever_p.h \
     $$PWD/statuslabel.h \
     $$PWD/outputformatter.h \
     $$PWD/outputformat.h \