1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/**************************************************************************
**
** 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 "remotelinuxusedportsgatherer.h"
#include "linuxdeviceconfiguration.h"
#include "portlist.h"
#include <utils/ssh/sshremoteprocessrunner.h>
#include <QtCore/QString>
using namespace Utils;
namespace RemoteLinux {
namespace Internal {
class RemoteLinuxUsedPortsGathererPrivate
{
public:
RemoteLinuxUsedPortsGathererPrivate() : running(false) {}
SshRemoteProcessRunner procRunner;
PortList portsToCheck;
QList<int> usedPorts;
QByteArray remoteStdout;
QByteArray remoteStderr;
bool running; // TODO: Redundant due to being in sync with procRunner?
};
} // namespace Internal
using namespace Internal;
RemoteLinuxUsedPortsGatherer::RemoteLinuxUsedPortsGatherer(QObject *parent) :
QObject(parent), d(new RemoteLinuxUsedPortsGathererPrivate)
{
}
RemoteLinuxUsedPortsGatherer::~RemoteLinuxUsedPortsGatherer()
{
delete d;
}
void RemoteLinuxUsedPortsGatherer::start(const Utils::SshConnection::Ptr &connection,
const LinuxDeviceConfiguration::ConstPtr &devConf)
{
if (d->running)
qWarning("Unexpected call of %s in running state", Q_FUNC_INFO);
d->portsToCheck = devConf->freePorts();
d->usedPorts.clear();
d->remoteStdout.clear();
d->remoteStderr.clear();
connect(&d->procRunner, SIGNAL(connectionError()), SLOT(handleConnectionError()));
connect(&d->procRunner, SIGNAL(processClosed(int)), SLOT(handleProcessClosed(int)));
connect(&d->procRunner, SIGNAL(processOutputAvailable(QByteArray)),
SLOT(handleRemoteStdOut(QByteArray)));
connect(&d->procRunner, SIGNAL(processErrorOutputAvailable(QByteArray)),
SLOT(handleRemoteStdErr(QByteArray)));
QString procFilePath;
int addressLength;
if (connection->ipProtocolVersion() == QAbstractSocket::IPv4Protocol) {
procFilePath = QLatin1String("/proc/net/tcp");
addressLength = 8;
} else {
procFilePath = QLatin1String("/proc/net/tcp6");
addressLength = 32;
}
const QString command = QString::fromLocal8Bit("sed "
"'s/.*: [[:xdigit:]]\\{%1\\}:\\([[:xdigit:]]\\{4\\}\\).*/\\1/g' %2")
.arg(addressLength).arg(procFilePath);
// TODO: We should not use an SshRemoteProcessRunner here, because we have to check
// for the type of the connection before we can say what the exact command line is.
d->procRunner.run(command.toUtf8(), connection->connectionParameters());
d->running = true;
}
void RemoteLinuxUsedPortsGatherer::stop()
{
if (!d->running)
return;
d->running = false;
disconnect(&d->procRunner, 0, this, 0);
}
int RemoteLinuxUsedPortsGatherer::getNextFreePort(PortList *freePorts) const
{
while (freePorts->hasMore()) {
const int port = freePorts->getNext();
if (!d->usedPorts.contains(port))
return port;
}
return -1;
}
QList<int> RemoteLinuxUsedPortsGatherer::usedPorts() const
{
return d->usedPorts;
}
void RemoteLinuxUsedPortsGatherer::setupUsedPorts()
{
QList<QByteArray> portStrings = d->remoteStdout.split('\n');
portStrings.removeFirst();
foreach (const QByteArray &portString, portStrings) {
if (portString.isEmpty())
continue;
bool ok;
const int port = portString.toInt(&ok, 16);
if (ok) {
if (d->portsToCheck.contains(port) && !d->usedPorts.contains(port))
d->usedPorts << port;
} else {
qWarning("%s: Unexpected string '%s' is not a port.",
Q_FUNC_INFO, portString.data());
}
}
emit portListReady();
}
void RemoteLinuxUsedPortsGatherer::handleConnectionError()
{
if (!d->running)
return;
emit error(tr("Connection error: %1").arg(d->procRunner.lastConnectionErrorString()));
stop();
}
void RemoteLinuxUsedPortsGatherer::handleProcessClosed(int exitStatus)
{
if (!d->running)
return;
QString errMsg;
switch (exitStatus) {
case SshRemoteProcess::FailedToStart:
errMsg = tr("Could not start remote process: %1")
.arg(d->procRunner.process()->errorString());
break;
case SshRemoteProcess::KilledBySignal:
errMsg = tr("Remote process crashed: %1")
.arg(d->procRunner.process()->errorString());
break;
case SshRemoteProcess::ExitedNormally:
if (d->procRunner.process()->exitCode() == 0) {
setupUsedPorts();
} else {
errMsg = tr("Remote process failed; exit code was %1.")
.arg(d->procRunner.process()->exitCode());
}
break;
default:
Q_ASSERT_X(false, Q_FUNC_INFO, "Invalid exit status");
}
if (!errMsg.isEmpty()) {
if (!d->remoteStderr.isEmpty()) {
errMsg += tr("\nRemote error output was: %1")
.arg(QString::fromUtf8(d->remoteStderr));
}
emit error(errMsg);
}
stop();
}
void RemoteLinuxUsedPortsGatherer::handleRemoteStdOut(const QByteArray &output)
{
d->remoteStdout += output;
}
void RemoteLinuxUsedPortsGatherer::handleRemoteStdErr(const QByteArray &output)
{
d->remoteStderr += output;
}
} // namespace RemoteLinux
|
