summaryrefslogtreecommitdiffstats
path: root/kdeprint/kprinter/printwrapper.cpp
blob: a9f566c728d5ca20f0ff97c106ea18e8a38effce (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
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
/*
 *  This file is part of the KDE libraries
 *  Copyright (c) 2001 Michael Goffioul <kdeprint@swing.be>
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License version 2 as published by the Free Software Foundation.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this library; see the file COPYING.LIB.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301, USA.
 **/

#include "printwrapper.h"

#include <unistd.h>
#include <signal.h>
#include <sys/time.h>

#include <qstring.h>
#include <qstringlist.h>
#include <stdlib.h>
#include <kmessagebox.h>
#include <qfile.h>
#include <qtimer.h>
#include <qregexp.h>
#include <qsocketnotifier.h>

#include <kapplication.h>
#include <kcmdlineargs.h>
#include <klocale.h>
#include <kstandarddirs.h>
#include <kio/netaccess.h>
#include <kurl.h>
#include <kdebug.h>
#include <ktempfile.h>

#include <kprinter.h>
#include <kdeprint/kmmanager.h>
#include <kdeprint/kmprinter.h>
#include <kdeprint/kprintdialog.h>

void signal_handler(int);
QString tempFile;
bool fromStdin = false;
char job_output = 0;	// 0: dialog, 1: console, 2: none
char readchar = '\0';
bool dataread = false;
bool docopy = false;

void showmsgdialog(const QString& msg, int type = 0)
{
	switch (type)
	{
	   case 0: KMessageBox::information(NULL,msg,i18n("Print Information")); break;
	   case 1: KMessageBox::sorry(NULL,msg,i18n("Print Warning")); break;
	   case 2: KMessageBox::error(NULL,msg,i18n("Print Error")); break;
	}
}

void showmsgconsole(const QString& msg, int type = 0)
{
	QString	errmsg = QString::fromLatin1("%1 : ").arg((type == 0 ? i18n("Print info") : (type == 1 ? i18n("Print warning") : i18n("Print error"))));
	kdDebug() << errmsg << msg << endl;
}

void showmsg(const QString& msg, int type = 0)
{
	switch (job_output) {
	   case 0: showmsgdialog(msg,type); break;
	   case 1: showmsgconsole(msg,type); break;
	   default: break;
	}
}

void errormsg(const QString& msg)
{
	showmsg(msg,2);
	exit(1);
}

void signal_handler(int s)
{
	QFile::remove(tempFile);
	exit(s);
}

QString copyfile( const QString& filename )
{
	kdDebug( 500 ) << "Copying file " << filename << endl;
	QString result;
	QFile f( filename );
	if ( f.open( IO_ReadOnly ) )
	{
		KTempFile temp;
		temp.setAutoDelete( false );
		QFile *tf = temp.file();
		if ( tf )
		{
			char buffer[ 0xFFFF ];
			int b = 0;
			while ( ( b = f.readBlock( buffer, 0xFFFF ) ) > 0 )
			{
				if ( tf->writeBlock( buffer, b ) != b )
					break;
			}
			tf->close();
			if ( b > 0 )
				temp.setAutoDelete( true );
			else
			{
				kdDebug( 500 ) << "File copied to " << temp.name() << endl;
				result = temp.name();
			}
		}
		else
			temp.setAutoDelete( true );
		f.close();
	}
	return result;
}

//******************************************************************************************************

PrintWrapper::PrintWrapper()
: QWidget(), force_stdin(false), check_stdin(true)
{
}

void PrintWrapper::slotPrint()
{
	KCmdLineArgs	*args = KCmdLineArgs::parsedArgs();

#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
	struct sigaction action;
#endif /* HAVE_SIGACTION && !HAVE_SIGSET*/

	// read variables from command line
	QString	printer = args->getOption("d");
	QString	title = args->getOption("t");
	int	ncopies = QString(args->getOption("n")).toInt();
	QString	job_mode = args->getOption("j");
	QString	system = args->getOption("system");
	QCStringList	optlist = args->getOptionList("o");
	QMap<QString,QString>	opts;
	KURL::List	files;
	QStringList	filestoprint;
	force_stdin = args->isSet("stdin");
	docopy = args->isSet( "c" );
	bool	nodialog = !(args->isSet("dialog"));
	
	if( isatty( 0 ))
	    {
	    kdDebug( 500 ) << "stdin is a terminal, disabling it" << endl;
	    check_stdin = false;
	    }

	// parse options
	for (QCStringList::ConstIterator it=optlist.begin(); it!=optlist.end(); ++it)
	{
		QStringList	l = QStringList::split('=',QString(*it),false);
		if (l.count() >= 1) opts[l[0]] = (l.count() == 2 ? l[1] : QString::null);
	}

	// read file list
	for (int i=0; i<args->count(); i++)
		files.append(args->url(i));

	// some clean-up
	args->clear();

	// set default values if necessary
	if (job_mode == "console") job_output = 1;
	else if (job_mode == "none") job_output = 2;
	else job_output = 0;

	// some checking
	if ( files.count() > 0)
	{
		check_stdin = false;
		
		if( force_stdin )
		{
			showmsg(i18n("A file has been specified on the command line. Printing from STDIN will be disabled."), 1);
			force_stdin = false;
		}
	}
	if (nodialog && files.count() == 0 &&!force_stdin && !check_stdin )
	{
		errormsg(i18n("When using '--nodialog', you must at least specify one file to print or use the '--stdin' flag."));
	}
	
	if( check_stdin )
	{ // check if there's any input on stdin
	    fd_set in;
	    struct timeval tm;
	    tm.tv_sec = 0;
	    tm.tv_usec = 0;
	    FD_ZERO( &in );
	    FD_SET( 0, &in );
	    if( select( 1, &in, NULL, NULL, &tm ) )
	    { // we have data on stdin
			if ( read( 0, &readchar, 1 ) > 0 )
			{
				force_stdin = true;
				check_stdin = false;
				dataread = true;
				kdDebug( 500 ) << "input detected on stdin" << endl;
			}
			else
			{
				force_stdin = check_stdin = false;
				kdDebug( 500 ) << "stdin closed and empty" << endl;
			}
	    } 
		else
			kdDebug( 500 ) << "no input on stdin at startup" << endl;
	}

        // force_stdin ? or also check_stdin ?
	KPrinter::ApplicationType	dialog_mode = (force_stdin || nodialog ? KPrinter::StandAlone : KPrinter::StandAlonePersistent);
	KPrinter::setApplicationType(dialog_mode);
	if (!force_stdin)
		KPrinter::addStandardPage(KPrinter::FilesPage);

	KPrinter	kprinter;
	if (nodialog)
	{
		KMPrinter	*prt(0);
		KMManager	*mgr = KMManager::self();

		mgr->printerList(false);
		if (!printer.isEmpty())
			prt = mgr->findPrinter(printer);
		else
			prt = mgr->defaultPrinter();

		if (prt == 0)
			errormsg(i18n("The specified printer or the default printer could not be found."));
		else if (!prt->autoConfigure(&kprinter))
			errormsg(i18n("Operation aborted."));
	}
	else if (!printer.isEmpty())
		kprinter.setSearchName(printer);
	kprinter.setDocName(title);
	kprinter.initOptions(opts);
	kprinter.setOption("kde-filelist", files.toStringList().join("@@"));
	kdDebug( 500 ) << kprinter.option( "kde-filelist" ) << endl;
	if (ncopies > 0)
		kprinter.setNumCopies(ncopies);

	if (nodialog)
		slotPrintRequested(&kprinter);
	else
	{
		dlg = KPrintDialog::printerDialog(&kprinter, 0);
		if (dlg)
		{
			connect(dlg, SIGNAL(printRequested(KPrinter*)), SLOT(slotPrintRequested(KPrinter*)));
			if( check_stdin )
			{
			    notif = new QSocketNotifier( 0, QSocketNotifier::Read, this );
			    connect( notif, SIGNAL( activated( int )), this, SLOT( slotGotStdin()));
			    kdDebug( 500 ) << "waiting for input on stdin" << endl;
			}
			dlg->exec();
			delete dlg;
		}
		else
			errormsg(i18n("Unable to construct the print dialog."));
	}

	QTimer::singleShot(10,kapp,SLOT(quit()));
}

void hack( KPrintDialog* dlg );

void PrintWrapper::slotGotStdin()
{
	delete notif;
	if ( read( 0, &readchar, 1 ) > 0 )
	{
		force_stdin = true;
		check_stdin = false;
		dataread = true;
		dlg->enableDialogPage( 0, false );
		kdDebug( 500 ) << "got delayed input on stdin" << endl;
	}
}

void PrintWrapper::slotPrintRequested(KPrinter *kprinter)
{
	// re-initialize docName
	kprinter->setDocName(QString::null);

	// download files if needed
	QStringList	files = QStringList::split("@@", kprinter->option("kde-filelist"), false), filestoprint;
	for (QStringList::ConstIterator it=files.begin(); it!=files.end(); ++it)
	{
		QString	tmpFile;
		KURL	url = KURL::fromPathOrURL(*it);
		kdDebug( 500 ) << url.url() << endl;
		if (KIO::NetAccess::download(url, tmpFile, this))
		{
			filestoprint << tmpFile;
			kprinter->setDocName(url.fileName());
		}
	}

	if (filestoprint.count() > 1)
		kprinter->setDocName(i18n("Multiple files (%1)").arg(filestoprint.count()));
	else if (kprinter->docName().isEmpty())
		kprinter->setDocName(force_stdin ? "<STDIN>" : "KPrinter");
	if (filestoprint.count() == 0)
	{
		// At this point force_stdin should be true
		if (!force_stdin)
			errormsg(i18n("Nothing to print."));

		// print from stdin

#  if defined(HAVE_SIGSET)
		sigset(SIGHUP, signal_handler);
		sigset(SIGINT, signal_handler);
		sigset(SIGTERM, signal_handler);
#  elif defined(HAVE_SIGACTION)
		memset(&action, 0, sizeof(action));
		action.sa_handler = signal_handler;

		sigaction(SIGHUP, &action, NULL);
		sigaction(SIGINT, &action, NULL);
		sigaction(SIGTERM, &action, NULL);
#  else
		signal(SIGHUP, signal_handler);
		signal(SIGINT, signal_handler);
		signal(SIGTERM, signal_handler);
#  endif

		tempFile = locateLocal("tmp","kprinter_")+QString::number(getpid());
		filestoprint.append(tempFile);
		fromStdin = true;
		FILE	*fout = fopen(QFile::encodeName(filestoprint[0]),"w");
		if (!fout) errormsg(i18n("Unable to open temporary file."));
		char	buffer[8192];
		int	s;

		// check for previously read data
		if ( dataread )
			fwrite( &readchar, 1, 1, fout );
		// read stdin and write to temporary file
		while ((s=fread(buffer,1,sizeof(buffer),stdin)) > 0)
			fwrite(buffer,1,s,fout);

		s = ftell(fout);
		fclose(fout);
		if (s <= 0)
		{
			showmsg(i18n("Stdin is empty, no job sent."), 2);
			QFile::remove(filestoprint[0]);
			return;
		}
	}
	else if ( docopy )
	{
		for ( QStringList::Iterator it=filestoprint.begin(); it!=filestoprint.end(); ++it )
		{
			QString tmp = copyfile( *it );
			if ( tmp.isEmpty() )
			{
				errormsg( i18n( "Unable to copy file %1." ).arg( *it ) );
				return;
			}
			*it = tmp;
		}
		fromStdin = true;
	}
	else
		fromStdin = false;

	// print all files. Remove it after if printing from
	// stdin. "kprinter" shouldn't remove temp file itself,
	// otherwise the temp file might get removed before the
	// print process finishes.
	bool ok = kprinter->printFiles(filestoprint, fromStdin);

	if (!ok)
		showmsg(i18n("Error while printing files"), 2);
	// Do not show this dialog anymore. Code sould be removed definitively
	// if nobody complains.
	/*else
	{
		QString	msg = i18n("<nobr>File(s) sent to printer <b>%1</b>.</nobr>").arg(kprinter->printerName());
		showmsg(msg,0);
	}*/
}

#include "printwrapper.moc"