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Move SSH support into a dedicated library.

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It does not belong into libUtils, which is a collection of small
unrelated utility classes.

Task-number: QTCREATORBUG-7218
Change-Id: Id92b9f28678afec93e6f07166adfde6550f38072
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>
This commit is contained in:
Christian Kandeler
2012-05-18 10:49:35 +02:00
parent b9d9bb7ba8
commit 53a1087d13
153 changed files with 800 additions and 725 deletions
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225
src/libs/ssh/sftpincomingpacket.cpp Normal file
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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@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 qt-info@nokia.com.
**
**************************************************************************/
#include "sftpincomingpacket_p.h"
#include "sshexception_p.h"
#include "sshpacketparser_p.h"
namespace QSsh {
namespace Internal {
SftpIncomingPacket::SftpIncomingPacket() : m_length(0)
{
}
void SftpIncomingPacket::consumeData(QByteArray &newData)
{
#ifdef CREATOR_SSH_DEBUG
qDebug("%s: current data size = %d, new data size = %d", Q_FUNC_INFO,
m_data.size(), newData.size());
#endif
if (isComplete() || dataSize() + newData.size() < sizeof m_length)
return;
if (dataSize() < sizeof m_length) {
moveFirstBytes(m_data, newData, sizeof m_length - m_data.size());
m_length = SshPacketParser::asUint32(m_data, static_cast<quint32>(0));
if (m_length < static_cast<quint32>(TypeOffset + 1)
|| m_length > MaxPacketSize) {
throw SSH_SERVER_EXCEPTION(SSH_DISCONNECT_PROTOCOL_ERROR,
"Invalid length field in SFTP packet.");
}
}
moveFirstBytes(m_data, newData,
qMin<quint32>(m_length - dataSize() + 4, newData.size()));
}
void SftpIncomingPacket::moveFirstBytes(QByteArray &target, QByteArray &source,
int n)
{
target.append(source.left(n));
source.remove(0, n);
}
bool SftpIncomingPacket::isComplete() const
{
return m_length == dataSize() - 4;
}
void SftpIncomingPacket::clear()
{
m_data.clear();
m_length = 0;
}
quint32 SftpIncomingPacket::extractServerVersion() const
{
Q_ASSERT(isComplete());
Q_ASSERT(type() == SSH_FXP_VERSION);
try {
return SshPacketParser::asUint32(m_data, TypeOffset + 1);
} catch (SshPacketParseException &) {
throw SSH_SERVER_EXCEPTION(SSH_DISCONNECT_PROTOCOL_ERROR,
"Invalid SSH_FXP_VERSION packet.");
}
}
SftpHandleResponse SftpIncomingPacket::asHandleResponse() const
{
Q_ASSERT(isComplete());
Q_ASSERT(type() == SSH_FXP_HANDLE);
try {
SftpHandleResponse response;
quint32 offset = RequestIdOffset;
response.requestId = SshPacketParser::asUint32(m_data, &offset);
response.handle = SshPacketParser::asString(m_data, &offset);
return response;
} catch (SshPacketParseException &) {
throw SSH_SERVER_EXCEPTION(SSH_DISCONNECT_PROTOCOL_ERROR,
"Invalid SSH_FXP_HANDLE packet");
}
}
SftpStatusResponse SftpIncomingPacket::asStatusResponse() const
{
Q_ASSERT(isComplete());
Q_ASSERT(type() == SSH_FXP_STATUS);
try {
SftpStatusResponse response;
quint32 offset = RequestIdOffset;
response.requestId = SshPacketParser::asUint32(m_data, &offset);
response.status = static_cast<SftpStatusCode>(SshPacketParser::asUint32(m_data, &offset));
response.errorString = SshPacketParser::asUserString(m_data, &offset);
response.language = SshPacketParser::asString(m_data, &offset);
return response;
} catch (SshPacketParseException &) {
throw SSH_SERVER_EXCEPTION(SSH_DISCONNECT_PROTOCOL_ERROR,
"Invalid SSH_FXP_STATUS packet.");
}
}
SftpNameResponse SftpIncomingPacket::asNameResponse() const
{
Q_ASSERT(isComplete());
Q_ASSERT(type() == SSH_FXP_NAME);
try {
SftpNameResponse response;
quint32 offset = RequestIdOffset;
response.requestId = SshPacketParser::asUint32(m_data, &offset);
const quint32 count = SshPacketParser::asUint32(m_data, &offset);
for (quint32 i = 0; i < count; ++i)
response.files << asFile(offset);
return response;
} catch (SshPacketParseException &) {
throw SSH_SERVER_EXCEPTION(SSH_DISCONNECT_PROTOCOL_ERROR,
"Invalid SSH_FXP_NAME packet.");
}
}
SftpDataResponse SftpIncomingPacket::asDataResponse() const
{
Q_ASSERT(isComplete());
Q_ASSERT(type() == SSH_FXP_DATA);
try {
SftpDataResponse response;
quint32 offset = RequestIdOffset;
response.requestId = SshPacketParser::asUint32(m_data, &offset);
response.data = SshPacketParser::asString(m_data, &offset);
return response;
} catch (SshPacketParseException &) {
throw SSH_SERVER_EXCEPTION(SSH_DISCONNECT_PROTOCOL_ERROR,
"Invalid SSH_FXP_DATA packet.");
}
}
SftpAttrsResponse SftpIncomingPacket::asAttrsResponse() const
{
Q_ASSERT(isComplete());
Q_ASSERT(type() == SSH_FXP_ATTRS);
try {
SftpAttrsResponse response;
quint32 offset = RequestIdOffset;
response.requestId = SshPacketParser::asUint32(m_data, &offset);
response.attrs = asFileAttributes(offset);
return response;
} catch (SshPacketParseException &) {
throw SSH_SERVER_EXCEPTION(SSH_DISCONNECT_PROTOCOL_ERROR,
"Invalid SSH_FXP_ATTRS packet.");
}
}
SftpFile SftpIncomingPacket::asFile(quint32 &offset) const
{
SftpFile file;
file.fileName
= QString::fromUtf8(SshPacketParser::asString(m_data, &offset));
file.longName
= QString::fromUtf8(SshPacketParser::asString(m_data, &offset));
file.attributes = asFileAttributes(offset);
return file;
}
SftpFileAttributes SftpIncomingPacket::asFileAttributes(quint32 &offset) const
{
SftpFileAttributes attributes;
const quint32 flags = SshPacketParser::asUint32(m_data, &offset);
attributes.sizePresent = flags & SSH_FILEXFER_ATTR_SIZE;
attributes.timesPresent = flags & SSH_FILEXFER_ATTR_ACMODTIME;
attributes.uidAndGidPresent = flags & SSH_FILEXFER_ATTR_UIDGID;
attributes.permissionsPresent = flags & SSH_FILEXFER_ATTR_PERMISSIONS;
if (attributes.sizePresent)
attributes.size = SshPacketParser::asUint64(m_data, &offset);
if (attributes.uidAndGidPresent) {
attributes.uid = SshPacketParser::asUint32(m_data, &offset);
attributes.gid = SshPacketParser::asUint32(m_data, &offset);
}
if (attributes.permissionsPresent)
attributes.permissions = SshPacketParser::asUint32(m_data, &offset);
if (attributes.timesPresent) {
attributes.atime = SshPacketParser::asUint32(m_data, &offset);
attributes.mtime = SshPacketParser::asUint32(m_data, &offset);
}
if (flags & SSH_FILEXFER_ATTR_EXTENDED) {
const quint32 count = SshPacketParser::asUint32(m_data, &offset);
for (quint32 i = 0; i < count; ++i) {
SshPacketParser::asString(m_data, &offset);
SshPacketParser::asString(m_data, &offset);
}
}
return attributes;
}
} // namespace Internal
} // namespace QSsh