ProjectExplorer: Introduce DeviceProcessSignalOperation.

Every device can now return a DeviceProcessSignalOperation,
which allows to kill or interrupt processes running on the
device.

Change-Id: Idaa04ebc767e09ca167fa033ed93860b9b81479e
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>
Reviewed-by: David Kaspar <dkaspar@blackberry.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

1 files changed, 133 insertions, 0 deletions

diff --git a/src/plugins/remotelinux/remotelinuxsignaloperation.cpp b/src/plugins/remotelinux/remotelinuxsignaloperation.cpp
new file mode 100644
index 0000000000..bdfb67a787
--- /dev/null
+++ b/src/plugins/remotelinux/remotelinuxsignaloperation.cpp
@@ -0,0 +1,133 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "remotelinuxsignaloperation.h"
+
+#include <ssh/sshremoteprocessrunner.h>
+#include <ssh/sshconnection.h>
+#include <utils/qtcassert.h>
+
+using namespace RemoteLinux;
+using namespace ProjectExplorer;
+
+RemoteLinuxSignalOperation::RemoteLinuxSignalOperation(
+        const QSsh::SshConnectionParameters sshParameters)
+    : DeviceProcessSignalOperation()
+    , m_sshParameters(sshParameters)
+    , m_runner(0)
+{}
+
+RemoteLinuxSignalOperation::~RemoteLinuxSignalOperation()
+{
+    if (m_runner) {
+        connect(m_runner, SIGNAL(processClosed(int)), m_runner, SLOT(deleteLater()));
+        connect(m_runner, SIGNAL(connectionError()), m_runner, SLOT(deleteLater()));
+    }
+}
+
+static QString signalProcessByPidCommandLine(int pid, int signal)
+{
+    return QString::fromLatin1("kill -%1 %2").arg(signal).arg(pid);
+}
+
+void RemoteLinuxSignalOperation::run(const QString command)
+{
+    QTC_ASSERT(!m_runner, return);
+    m_runner = new QSsh::SshRemoteProcessRunner();
+    connect(m_runner, SIGNAL(processClosed(int)), SLOT(runnerProcessFinished()));
+    connect(m_runner, SIGNAL(connectionError()), SLOT(runnerConnectionError()));
+    m_runner->run(command.toLatin1(), m_sshParameters);
+}
+
+void RemoteLinuxSignalOperation::finish()
+{
+    delete m_runner;
+    m_runner = 0;
+    emit finished(m_errorMessage);
+}
+
+static QString signalProcessByNameCommandLine(const QString &filePath, int signal)
+{
+    return QString::fromLatin1(
+                "cd /proc; for pid in `ls -d [0123456789]*`; "
+                "do "
+                "if [ \"`readlink /proc/$pid/exe`\" = \"%1\" ]; then "
+                "    kill %2 $pid;"
+                "fi; "
+                "done").arg(filePath).arg(signal);
+}
+
+QString RemoteLinuxSignalOperation::killProcessByNameCommandLine(const QString &filePath) const
+{
+    return QString::fromLatin1("%1; %2").arg(signalProcessByNameCommandLine(filePath, 15),
+                                             signalProcessByNameCommandLine(filePath, 9));
+}
+
+QString RemoteLinuxSignalOperation::interruptProcessByNameCommandLine(const QString &filePath) const
+{
+    return signalProcessByNameCommandLine(filePath, 2);
+}
+
+void RemoteLinuxSignalOperation::killProcess(int pid)
+{
+    run(signalProcessByPidCommandLine(pid, 9));
+}
+
+void RemoteLinuxSignalOperation::killProcess(const QString &filePath)
+{
+    run(killProcessByNameCommandLine(filePath));
+}
+
+void RemoteLinuxSignalOperation::interruptProcess(int pid)
+{
+    run(signalProcessByPidCommandLine(pid, 2));
+}
+
+void RemoteLinuxSignalOperation::interruptProcess(const QString &filePath)
+{
+    run(interruptProcessByNameCommandLine(filePath));
+}
+
+void RemoteLinuxSignalOperation::runnerProcessFinished()
+{
+    m_errorMessage.clear();
+    if (m_runner->processExitStatus() != QSsh::SshRemoteProcess::NormalExit) {
+        m_errorMessage = m_runner->processErrorString();
+    } else if (m_runner->processExitCode() != 0) {
+        m_errorMessage = tr("Exit code is %1. stderr: ").arg(m_runner->processExitCode())
+                + QString::fromLatin1(m_runner->readAllStandardError());
+    }
+    finish();
+}
+
+void RemoteLinuxSignalOperation::runnerConnectionError()
+{
+    m_errorMessage = m_runner->lastConnectionErrorString();
+    finish();
+}