summaryrefslogtreecommitdiffstats
path: root/src/corelib/io/qprocess_wince.cpp
blob: 807472b7b20fe30ecb502bd5f809ef8b206af69e (plain)
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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qprocess.h"
#include "qprocess_p.h"
#include "qwindowspipewriter_p.h"

#include <qdir.h>
#include <qfileinfo.h>
#include <qregexp.h>
#include <qtimer.h>
#include <qwineventnotifier.h>
#include <qdebug.h>
#include <private/qthread_p.h>

#ifndef QT_NO_PROCESS

QT_BEGIN_NAMESPACE

//#define QPROCESS_DEBUG

void QProcessPrivate::destroyPipe(Q_PIPE pipe[2])
{
    Q_UNUSED(pipe);
}

void QProcessPrivate::closeChannel(Channel *channel)
{
    Q_UNUSED(channel);
}

static QString qt_create_commandline(const QString &program, const QStringList &arguments)
{
    QString args;
    if (!program.isEmpty()) {
        QString programName = program;
        if (!programName.startsWith(QLatin1Char('\"')) && !programName.endsWith(QLatin1Char('\"')) && programName.contains(QLatin1Char(' ')))
            programName = QLatin1Char('\"') + programName + QLatin1Char('\"');
        programName.replace(QLatin1Char('/'), QLatin1Char('\\'));

        // add the prgram as the first arg ... it works better
        args = programName + QLatin1Char(' ');
    }

    for (int i=0; i<arguments.size(); ++i) {
        QString tmp = arguments.at(i);
        // Quotes are escaped and their preceding backslashes are doubled.
        tmp.replace(QRegExp(QLatin1String("(\\\\*)\"")), QLatin1String("\\1\\1\\\""));
        if (tmp.isEmpty() || tmp.contains(QLatin1Char(' ')) || tmp.contains(QLatin1Char('\t'))) {
            // The argument must not end with a \ since this would be interpreted
            // as escaping the quote -- rather put the \ behind the quote: e.g.
            // rather use "foo"\ than "foo\"
            int i = tmp.length();
            while (i > 0 && tmp.at(i - 1) == QLatin1Char('\\'))
                --i;
            tmp.insert(i, QLatin1Char('"'));
            tmp.prepend(QLatin1Char('"'));
        }
        args += QLatin1Char(' ') + tmp;
    }
    return args;
}

QProcessEnvironment QProcessEnvironment::systemEnvironment()
{
    QProcessEnvironment env;
    return env;
}

void QProcessPrivate::startProcess()
{
    Q_Q(QProcess);

    bool success = false;

    if (pid) {
        CloseHandle(pid->hThread);
        CloseHandle(pid->hProcess);
        delete pid;
        pid = 0;
    }
    pid = new PROCESS_INFORMATION;
    memset(pid, 0, sizeof(PROCESS_INFORMATION));

    q->setProcessState(QProcess::Starting);

    QString args = qt_create_commandline(QString(), arguments);
    if (!nativeArguments.isEmpty()) {
        if (!args.isEmpty())
             args += QLatin1Char(' ');
        args += nativeArguments;
    }

#if defined QPROCESS_DEBUG
    qDebug("Creating process");
    qDebug("   program : [%s]", program.toLatin1().constData());
    qDebug("   args : %s", args.toLatin1().constData());
    qDebug("   pass environment : %s", environment.isEmpty() ? "no" : "yes");
#endif

    QString fullPathProgram = program;
    if (!QDir::isAbsolutePath(fullPathProgram))
        fullPathProgram = QFileInfo(fullPathProgram).absoluteFilePath();
    fullPathProgram.replace(QLatin1Char('/'), QLatin1Char('\\'));
    success = CreateProcess((wchar_t*)fullPathProgram.utf16(),
                            (wchar_t*)args.utf16(),
                            0, 0, false, 0, 0, 0, 0, pid);

    if (!success) {
        cleanup();
        setErrorAndEmit(QProcess::FailedToStart);
        q->setProcessState(QProcess::NotRunning);
        return;
    }

    q->setProcessState(QProcess::Running);
    // User can call kill()/terminate() from the stateChanged() slot
    // so check before proceeding
    if (!pid)
        return;

    if (threadData->hasEventDispatcher()) {
        processFinishedNotifier = new QWinEventNotifier(pid->hProcess, q);
        QObject::connect(processFinishedNotifier, SIGNAL(activated(HANDLE)), q, SLOT(_q_processDied()));
        processFinishedNotifier->setEnabled(true);
    }

    // give the process a chance to start ...
    Sleep(SLEEPMIN * 2);
    _q_startupNotification();
}

bool QProcessPrivate::processStarted()
{
    return processState == QProcess::Running;
}

qint64 QProcessPrivate::bytesAvailableInChannel(const Channel *) const
{
    return 0;
}

qint64 QProcessPrivate::readFromChannel(const Channel *, char *data, qint64 maxlen)
{
    return -1;
}

static BOOL QT_WIN_CALLBACK qt_terminateApp(HWND hwnd, LPARAM procId)
{
    DWORD currentProcId = 0;
    GetWindowThreadProcessId(hwnd, &currentProcId);
    if (currentProcId == (DWORD)procId)
        PostMessage(hwnd, WM_CLOSE, 0, 0);

    return TRUE;
}

void QProcessPrivate::terminateProcess()
{
    if (pid) {
        EnumWindows(qt_terminateApp, (LPARAM)pid->dwProcessId);
        PostThreadMessage(pid->dwThreadId, WM_CLOSE, 0, 0);
    }
}

void QProcessPrivate::killProcess()
{
    if (pid)
        TerminateProcess(pid->hProcess, 0xf291);
}

bool QProcessPrivate::waitForStarted(int)
{
    Q_Q(QProcess);

    if (processStarted())
        return true;

    if (processError == QProcess::FailedToStart)
        return false;

    setError(QProcess::Timedout);
    return false;
}

bool QProcessPrivate::drainOutputPipes()
{
    return true;
}

bool QProcessPrivate::waitForReadyRead(int msecs)
{
    return false;
}

bool QProcessPrivate::waitForBytesWritten(int msecs)
{
    return false;
}

bool QProcessPrivate::waitForFinished(int msecs)
{
    Q_Q(QProcess);
#if defined QPROCESS_DEBUG
    qDebug("QProcessPrivate::waitForFinished(%d)", msecs);
#endif

    QIncrementalSleepTimer timer(msecs);

    forever {
        if (!pid)
            return true;

        if (WaitForSingleObject(pid->hProcess, timer.nextSleepTime()) == WAIT_OBJECT_0) {
            _q_processDied();
            return true;
        }

        if (timer.hasTimedOut())
            break;
    }
    setError(QProcess::Timedout);
    return false;
}

void QProcessPrivate::findExitCode()
{
    DWORD theExitCode;
    if (GetExitCodeProcess(pid->hProcess, &theExitCode)) {
        exitCode = theExitCode;
        //### for now we assume a crash if exit code is less than -1 or the magic number
        crashed = (exitCode == 0xf291 || (int)exitCode < 0);
    }
}

void QProcessPrivate::flushPipeWriter()
{
}

qint64 QProcessPrivate::pipeWriterBytesToWrite() const
{
    return 0;
}

qint64 QProcessPrivate::writeToStdin(const char *data, qint64 maxlen)
{
    Q_UNUSED(data);
    Q_UNUSED(maxlen);
    return -1;
}

bool QProcessPrivate::waitForWrite(int msecs)
{
    Q_UNUSED(msecs);
    return false;
}

bool QProcessPrivate::startDetached(const QString &program, const QStringList &arguments, const QString &workingDir, qint64 *pid)
{
    Q_UNUSED(workingDir);
    QString args = qt_create_commandline(QString(), arguments);

    bool success = false;

    PROCESS_INFORMATION pinfo;

    QString fullPathProgram = program;
    if (!QDir::isAbsolutePath(fullPathProgram))
        fullPathProgram.prepend(QDir::currentPath().append(QLatin1Char('/')));
    fullPathProgram.replace(QLatin1Char('/'), QLatin1Char('\\'));
    success = CreateProcess((wchar_t*)fullPathProgram.utf16(),
                            (wchar_t*)args.utf16(),
                            0, 0, false, CREATE_NEW_CONSOLE, 0, 0, 0, &pinfo);

    if (success) {
        CloseHandle(pinfo.hThread);
        CloseHandle(pinfo.hProcess);
        if (pid)
            *pid = pinfo.dwProcessId;
    }

    return success;
}

QT_END_NAMESPACE

#endif // QT_NO_PROCESS