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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "sshcapabilities_p.h"
#include "sshexception_p.h"
#include <QCoreApplication>
#include <QString>
namespace QSsh {
namespace Internal {
namespace {
QByteArray listAsByteArray(const QList<QByteArray> &list)
{
QByteArray array;
foreach (const QByteArray &elem, list)
array += elem + ',';
if (!array.isEmpty())
array.remove(array.count() - 1, 1);
return array;
}
} // anonymous namspace
const QByteArray SshCapabilities::DiffieHellmanGroup1Sha1("diffie-hellman-group1-sha1");
const QByteArray SshCapabilities::DiffieHellmanGroup14Sha1("diffie-hellman-group14-sha1");
const QByteArray SshCapabilities::EcdhKexNamePrefix("ecdh-sha2-nistp");
const QByteArray SshCapabilities::EcdhNistp256 = EcdhKexNamePrefix + "256";
const QByteArray SshCapabilities::EcdhNistp384 = EcdhKexNamePrefix + "384";
const QByteArray SshCapabilities::EcdhNistp521 = EcdhKexNamePrefix + "521";
const QList<QByteArray> SshCapabilities::KeyExchangeMethods = QList<QByteArray>()
<< SshCapabilities::EcdhNistp256
<< SshCapabilities::EcdhNistp384
<< SshCapabilities::EcdhNistp521
<< SshCapabilities::DiffieHellmanGroup1Sha1
<< SshCapabilities::DiffieHellmanGroup14Sha1;
const QByteArray SshCapabilities::PubKeyDss("ssh-dss");
const QByteArray SshCapabilities::PubKeyRsa("ssh-rsa");
const QByteArray SshCapabilities::PubKeyEcdsaPrefix("ecdsa-sha2-nistp");
const QByteArray SshCapabilities::PubKeyEcdsa256 = SshCapabilities::PubKeyEcdsaPrefix + "256";
const QByteArray SshCapabilities::PubKeyEcdsa384 = SshCapabilities::PubKeyEcdsaPrefix + "384";
const QByteArray SshCapabilities::PubKeyEcdsa521 = SshCapabilities::PubKeyEcdsaPrefix + "521";
const QList<QByteArray> SshCapabilities::PublicKeyAlgorithms = QList<QByteArray>()
<< SshCapabilities::PubKeyEcdsa256
<< SshCapabilities::PubKeyEcdsa384
<< SshCapabilities::PubKeyEcdsa521
<< SshCapabilities::PubKeyRsa
<< SshCapabilities::PubKeyDss;
const QByteArray SshCapabilities::CryptAlgo3DesCbc("3des-cbc");
const QByteArray SshCapabilities::CryptAlgo3DesCtr("3des-ctr");
const QByteArray SshCapabilities::CryptAlgoAes128Cbc("aes128-cbc");
const QByteArray SshCapabilities::CryptAlgoAes128Ctr("aes128-ctr");
const QByteArray SshCapabilities::CryptAlgoAes192Ctr("aes192-ctr");
const QByteArray SshCapabilities::CryptAlgoAes256Ctr("aes256-ctr");
const QList<QByteArray> SshCapabilities::EncryptionAlgorithms
= QList<QByteArray>() << SshCapabilities::CryptAlgoAes256Ctr
<< SshCapabilities::CryptAlgoAes192Ctr
<< SshCapabilities::CryptAlgoAes128Ctr
<< SshCapabilities::CryptAlgo3DesCtr
<< SshCapabilities::CryptAlgoAes128Cbc
<< SshCapabilities::CryptAlgo3DesCbc;
const QByteArray SshCapabilities::HMacSha1("hmac-sha1");
const QByteArray SshCapabilities::HMacSha196("hmac-sha1-96");
const QByteArray SshCapabilities::HMacSha256("hmac-sha2-256");
const QByteArray SshCapabilities::HMacSha384("hmac-sha2-384");
const QByteArray SshCapabilities::HMacSha512("hmac-sha2-512");
const QList<QByteArray> SshCapabilities::MacAlgorithms
= QList<QByteArray>() /* << SshCapabilities::HMacSha196 */
<< SshCapabilities::HMacSha256
<< SshCapabilities::HMacSha384
<< SshCapabilities::HMacSha512
<< SshCapabilities::HMacSha1;
const QList<QByteArray> SshCapabilities::CompressionAlgorithms
= QList<QByteArray>() << "none";
const QByteArray SshCapabilities::SshConnectionService("ssh-connection");
QList<QByteArray> SshCapabilities::commonCapabilities(const QList<QByteArray> &myCapabilities,
const QList<QByteArray> &serverCapabilities)
{
QList<QByteArray> capabilities;
foreach (const QByteArray &myCapability, myCapabilities) {
if (serverCapabilities.contains(myCapability))
capabilities << myCapability;
}
if (!capabilities.isEmpty())
return capabilities;
throw SshServerException(SSH_DISCONNECT_KEY_EXCHANGE_FAILED,
"Server and client capabilities do not match.",
QCoreApplication::translate("SshConnection",
"Server and client capabilities don't match. "
"Client list was: %1.\nServer list was %2.")
.arg(QString::fromLocal8Bit(listAsByteArray(myCapabilities).data()))
.arg(QString::fromLocal8Bit(listAsByteArray(serverCapabilities).data())));
}
QByteArray SshCapabilities::findBestMatch(const QList<QByteArray> &myCapabilities,
const QList<QByteArray> &serverCapabilities)
{
return commonCapabilities(myCapabilities, serverCapabilities).first();
}
int SshCapabilities::ecdsaIntegerWidthInBytes(const QByteArray &ecdsaAlgo)
{
if (ecdsaAlgo == PubKeyEcdsa256)
return 32;
if (ecdsaAlgo == PubKeyEcdsa384)
return 48;
if (ecdsaAlgo == PubKeyEcdsa521)
return 66;
throw SshClientException(SshInternalError, SSH_TR("Unexpected ecdsa algorithm \"%1\"")
.arg(QString::fromLatin1(ecdsaAlgo)));
}
QByteArray SshCapabilities::ecdsaPubKeyAlgoForKeyWidth(int keyWidthInBytes)
{
if (keyWidthInBytes <= 32)
return PubKeyEcdsa256;
if (keyWidthInBytes <= 48)
return PubKeyEcdsa384;
if (keyWidthInBytes <= 66)
return PubKeyEcdsa521;
throw SshClientException(SshInternalError, SSH_TR("Unexpected ecdsa key size (%1 bytes)")
.arg(keyWidthInBytes));
}
const char *SshCapabilities::oid(const QByteArray &ecdsaAlgo)
{
if (ecdsaAlgo == PubKeyEcdsa256)
return "secp256r1";
if (ecdsaAlgo == PubKeyEcdsa384)
return "secp384r1";
if (ecdsaAlgo == PubKeyEcdsa521)
return "secp521r1";
throw SshClientException(SshInternalError, SSH_TR("Unexpected ecdsa algorithm \"%1\"")
.arg(QString::fromLatin1(ecdsaAlgo)));
}
} // namespace Internal
} // namespace QSsh
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