summaryrefslogtreecommitdiffstats
path: root/kalarm/kamail.cpp
blob: 558406626fcd2d1657ef61d4cde072ce430e5184 (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
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
/*
 *  kamail.cpp  -  email functions
 *  Program:  kalarm
 *  Copyright © 2002-2005,2008 by David Jarvie <djarvie@kde.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include "kalarm.h"

#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <pwd.h>

#include <tqfile.h>
#include <tqregexp.h>

#include <kstandarddirs.h>
#include <dcopclient.h>
#include <dcopref.h>
#include <kmessagebox.h>
#include <kprocess.h>
#include <klocale.h>
#include <kaboutdata.h>
#include <kfileitem.h>
#include <kio/netaccess.h>
#include <ktempfile.h>
#include <kemailsettings.h>
#include <kdebug.h>

#include <libkpimidentities/identitymanager.h>
#include <libkpimidentities/identity.h>
#include <libemailfunctions/email.h>
#include <libkcal/person.h>

#include <kmime_header_parsing.h>

#include "alarmevent.h"
#include "functions.h"
#include "kalarmapp.h"
#include "mainwindow.h"
#include "preferences.h"
#include "kamail.h"


namespace HeaderParsing
{
bool parseAddress( const char* & scursor, const char * const send,
                   KMime::Types::Address & result, bool isCRLF=false );
bool parseAddressList( const char* & scursor, const char * const send,
                       TQValueList<KMime::Types::Address> & result, bool isCRLF=false );
}

namespace
{
TQString getHostName();
}

struct KAMailData
{
	KAMailData(const KAEvent& e, const TQString& fr, const TQString& bc, bool allownotify)
	                 : event(e), from(fr), bcc(bc), allowNotify(allownotify) { }
	const KAEvent& event;
	TQString        from;
	TQString        bcc;
	bool           allowNotify;
};


TQString KAMail::i18n_NeedFromEmailAddress()
{ return i18n("A 'From' email address must be configured in order to execute email alarms."); }

TQString KAMail::i18n_sent_mail()
{ return i18n("KMail folder name: this should be translated the same as in kmail", "sent-mail"); }

KPIM::IdentityManager* KAMail::mIdentityManager = 0;
KPIM::IdentityManager* KAMail::identityManager()
{
	if (!mIdentityManager)
		mIdentityManager = new KPIM::IdentityManager(true);   // create a read-only kmail identity manager
	return mIdentityManager;
}


/******************************************************************************
* Send the email message specified in an event.
* Reply = true if the message was sent - 'errmsgs' may contain copy error messages.
*       = false if the message was not sent - 'errmsgs' contains the error messages.
*/
bool KAMail::send(const KAEvent& event, TQStringList& errmsgs, bool allowNotify)
{
	TQString err;
	TQString from;
	KPIM::Identity identity;
	if (!event.emailFromId())
		from = Preferences::emailAddress();
	else
	{
		identity = mIdentityManager->identityForUoid(event.emailFromId());
		if (identity.isNull())
		{
			kdError(5950) << "KAMail::send(): identity" << event.emailFromId() << "not found" << endl;
			errmsgs = errors(i18n("Invalid 'From' email address.\nKMail identity '%1' not found.").tqarg(event.emailFromId()));
			return false;
		}
		from = identity.fullEmailAddr();
		if (from.isEmpty())
		{
			kdError(5950) << "KAMail::send(): identity" << identity.identityName() << "uoid" << identity.uoid() << ": no email address" << endl;
			errmsgs = errors(i18n("Invalid 'From' email address.\nEmail identity '%1' has no email address").tqarg(identity.identityName()));
			return false;
		}
	}
	if (from.isEmpty())
	{
		switch (Preferences::emailFrom())
		{
			case Preferences::MAIL_FROM_KMAIL:
				errmsgs = errors(i18n("No 'From' email address is configured (no default KMail identity found)\nPlease set it in KMail or in the KAlarm Preferences dialog."));
				break;
			case Preferences::MAIL_FROM_CONTROL_CENTRE:
				errmsgs = errors(i18n("No 'From' email address is configured.\nPlease set it in the KDE Control Center or in the KAlarm Preferences dialog."));
				break;
			case Preferences::MAIL_FROM_ADDR:
			default:
				errmsgs = errors(i18n("No 'From' email address is configured.\nPlease set it in the KAlarm Preferences dialog."));
				break;
		}
		return false;
	}
	KAMailData data(event, from,
	                (event.emailBcc() ? Preferences::emailBccAddress() : TQString()),
	                allowNotify);
	kdDebug(5950) << "KAlarmApp::sendEmail(): To: " << event.emailAddresses(", ")
	              << "\nSubject: " << event.emailSubject() << endl;

	if (Preferences::emailClient() == Preferences::SENDMAIL)
	{
		// Use sendmail to send the message
		TQString textComplete;
		TQString command = KStandardDirs::findExe(TQString::tqfromLatin1("sendmail"),
		                                         TQString::tqfromLatin1("/sbin:/usr/sbin:/usr/lib"));
		if (!command.isNull())
		{
			command += TQString::tqfromLatin1(" -f ");
			command += KPIM::getEmailAddress(from);
			command += TQString::tqfromLatin1(" -oi -t ");
			textComplete = initHeaders(data, false);
		}
		else
		{
			command = KStandardDirs::findExe(TQString::tqfromLatin1("mail"));
			if (command.isNull())
			{
				errmsgs = errors(i18n("%1 not found").tqarg(TQString::tqfromLatin1("sendmail"))); // give up
				return false;
			}

			command += TQString::tqfromLatin1(" -s ");
			command += KShellProcess::quote(event.emailSubject());

			if (!data.bcc.isEmpty())
			{
				command += TQString::tqfromLatin1(" -b ");
				command += KShellProcess::quote(data.bcc);
			}

			command += ' ';
			command += event.emailAddresses(" "); // locally provided, okay
		}

		// Add the body and attachments to the message.
		// (Sendmail requires attachments to have already been included in the message.)
		err = appendBodyAttachments(textComplete, event);
		if (!err.isNull())
		{
			errmsgs = errors(err);
			return false;
		}

		// Execute the send command
		FILE* fd = popen(command.local8Bit(), "w");
		if (!fd)
		{
			kdError(5950) << "KAMail::send(): Unable to open a pipe to " << command << endl;
			errmsgs = errors();
			return false;
		}
		fwrite(textComplete.local8Bit(), textComplete.length(), 1, fd);
		pclose(fd);

		if (Preferences::emailCopyToKMail())
		{
			// Create a copy of the sent email in KMail's 'Sent-mail' folder
			err = addToKMailFolder(data, "sent-mail", true);
			if (!err.isNull())
				errmsgs = errors(err, false);    // not a fatal error - continue
		}

		if (allowNotify)
			notifyQueued(event);
	}
	else
	{
		// Use KMail to send the message
		err = sendKMail(data);
		if (!err.isNull())
		{
			errmsgs = errors(err);
			return false;
		}
	}
	return true;
}

/******************************************************************************
* Send the email message via KMail.
* Reply = reason for failure (which may be the empty string)
*       = null string if success.
*/
TQString KAMail::sendKMail(const KAMailData& data)
{
	TQString err = KAlarm::runKMail(true);
	if (!err.isNull())
		return err;

	// KMail is now running. Determine which DCOP call to use.
	bool useSend = false;
	TQCString sendFunction = "sendMessage(TQString,TQString,TQString,TQString,TQString,TQString,KURL::List)";
	QCStringList funcs = kapp->dcopClient()->remoteFunctions("kmail", "MailTransportServiceIface");
	for (QCStringList::Iterator it=funcs.begin();  it != funcs.end() && !useSend;  ++it)
	{
		TQCString func = DCOPClient::normalizeFunctionSignature(*it);
		if (func.left(5) == "bool ")
		{
			func = func.mid(5);
			func.tqreplace(TQRegExp(" [0-9A-Za-z_:]+"), "");
			useSend = (func == sendFunction);
		}
	}

	TQByteArray  callData;
	TQDataStream arg(callData, IO_WriteOnly);
	kdDebug(5950) << "KAMail::sendKMail(): using " << (useSend ? "sendMessage()" : "dcopAddMessage()") << endl;
	if (useSend)
	{
		// This version of KMail has the sendMessage() function,
		// which transmits the message immediately.
		arg << data.from;
		arg << data.event.emailAddresses(", ");
		arg << "";    // CC:
		arg << data.bcc;
		arg << data.event.emailSubject();
		arg << data.event.message();
		arg << KURL::List(data.event.emailAttachments());
		if (!callKMail(callData, "MailTransportServiceIface", sendFunction, "bool"))
			return i18n("Error calling KMail");
	}
	else
	{
		// KMail is an older version, so use dcopAddMessage()
		// to add the message to the outbox for later transmission.
		err = addToKMailFolder(data, "outbox", false);
		if (!err.isNull())
			return err;
	}
	if (data.allowNotify)
		notifyQueued(data.event);
	return TQString();
}

/******************************************************************************
* Add the message to a KMail folder.
* Reply = reason for failure (which may be the empty string)
*       = null string if success.
*/
TQString KAMail::addToKMailFolder(const KAMailData& data, const char* folder, bool checkKmailRunning)
{
	TQString err;
	if (checkKmailRunning)
		err = KAlarm::runKMail(true);
	if (err.isNull())
	{
		TQString message = initHeaders(data, true);
		err = appendBodyAttachments(message, data.event);
		if (!err.isNull())
			return err;

		// Write to a temporary file for feeding to KMail
		KTempFile tmpFile;
		tmpFile.setAutoDelete(true);     // delete file when it is destructed
		TQTextStream* stream = tmpFile.textStream();
		if (!stream)
		{
			kdError(5950) << "KAMail::addToKMailFolder(" << folder << "): Unable to open a temporary mail file" << endl;
			return TQString("");
		}
		*stream << message;
		tmpFile.close();
		if (tmpFile.status())
		{
			kdError(5950) << "KAMail::addToKMailFolder(" << folder << "): Error " << tmpFile.status() << " writing to temporary mail file" << endl;
			return TQString("");
		}

		// Notify KMail of the message in the temporary file
		TQByteArray  callData;
		TQDataStream arg(callData, IO_WriteOnly);
		arg << TQString::tqfromLatin1(folder) << tmpFile.name();
		if (callKMail(callData, "KMailIface", "dcopAddMessage(TQString,TQString)", "int"))
			return TQString();
		err = i18n("Error calling KMail");
	}
	kdError(5950) << "KAMail::addToKMailFolder(" << folder << "): " << err << endl;
	return err;
}

/******************************************************************************
* Call KMail via DCOP. The DCOP function must return an 'int'.
*/
bool KAMail::callKMail(const TQByteArray& callData, const TQCString& iface, const TQCString& function, const TQCString& funcType)
{
	TQCString   replyType;
	TQByteArray replyData;
	if (!kapp->dcopClient()->call("kmail", iface, function, callData, replyType, replyData)
	||  replyType != funcType)
	{
		TQCString funcname = function;
		funcname.tqreplace(TQRegExp("(.+$"), "()");
		kdError(5950) << "KAMail::callKMail(): kmail " << funcname << " call failed\n";;
		return false;
	}
	TQDataStream replyStream(replyData, IO_ReadOnly);
	TQCString funcname = function;
	funcname.tqreplace(TQRegExp("(.+$"), "()");
	if (replyType == "int")
	{
		int result;
		replyStream >> result;
		if (result <= 0)
		{
			kdError(5950) << "KAMail::callKMail(): kmail " << funcname << " call returned error code = " << result << endl;
			return false;
		}
	}
	else if (replyType == "bool")
	{
		bool result;
		replyStream >> result;
		if (!result)
		{
			kdError(5950) << "KAMail::callKMail(): kmail " << funcname << " call returned error\n";
			return false;
		}
	}
	return true;
}

/******************************************************************************
* Create the headers part of the email.
*/
TQString KAMail::initHeaders(const KAMailData& data, bool dateId)
{
	TQString message;
	if (dateId)
	{
		struct timeval tod;
		gettimeofday(&tod, 0);
		time_t timenow = tod.tv_sec;
		char buff[64];
		strftime(buff, sizeof(buff), "Date: %a, %d %b %Y %H:%M:%S %z", localtime(&timenow));
		TQString from = data.from;
		from.tqreplace(TQRegExp("^.*<"), TQString()).tqreplace(TQRegExp(">.*$"), TQString());
		message = TQString::tqfromLatin1(buff);
		message += TQString::tqfromLatin1("\nMessage-Id: <%1.%2.%3>\n").tqarg(timenow).tqarg(tod.tv_usec).tqarg(from);
	}
	message += TQString::tqfromLatin1("From: ") + data.from;
	message += TQString::tqfromLatin1("\nTo: ") + data.event.emailAddresses(", ");
	if (!data.bcc.isEmpty())
		message += TQString::tqfromLatin1("\nBcc: ") + data.bcc;
	message += TQString::tqfromLatin1("\nSubject: ") + data.event.emailSubject();
	message += TQString::tqfromLatin1("\nX-Mailer: %1/" KALARM_VERSION).tqarg(kapp->aboutData()->programName());
	return message;
}

/******************************************************************************
* Append the body and attachments to the email text.
* Reply = reason for error
*       = 0 if successful.
*/
TQString KAMail::appendBodyAttachments(TQString& message, const KAEvent& event)
{
	static const char* textMimeTypes[] = {
		"application/x-sh", "application/x-csh", "application/x-shellscript",
		"application/x-nawk", "application/x-gawk", "application/x-awk",
		"application/x-perl", "application/x-desktop",
		0
	};
	TQStringList attachments = event.emailAttachments();
	if (!attachments.count())
	{
		// There are no attachments, so simply append the message body
		message += "\n\n";
		message += event.message();
	}
	else
	{
		// There are attachments, so the message must be in MIME format
		// Create a boundary string
		time_t timenow;
		time(&timenow);
		TQCString boundary;
		boundary.sprintf("------------_%lu_-%lx=", 2*timenow, timenow);
		message += TQString::tqfromLatin1("\nMIME-Version: 1.0");
		message += TQString::tqfromLatin1("\nContent-Type: multipart/mixed;\n  boundary=\"%1\"\n").tqarg(boundary.data());

		if (!event.message().isEmpty())
		{
			// There is a message body
			message += TQString::tqfromLatin1("\n--%1\nContent-Type: text/plain\nContent-Transfer-Encoding: 8bit\n\n").tqarg(boundary.data());
			message += event.message();
		}

		// Append each attachment in turn
		TQString attachError = i18n("Error attaching file:\n%1");
		for (TQStringList::Iterator at = attachments.begin();  at != attachments.end();  ++at)
		{
			TQString attachment = (*at).local8Bit();
			KURL url(attachment);
			url.cleanPath();
			KIO::UDSEntry uds;
			if (!KIO::NetAccess::stat(url, uds, MainWindow::mainMainWindow())) {
				kdError(5950) << "KAMail::appendBodyAttachments(): not found: " << attachment << endl;
				return i18n("Attachment not found:\n%1").tqarg(attachment);
			}
			KFileItem fi(uds, url);
			if (fi.isDir()  ||  !fi.isReadable()) {
				kdError(5950) << "KAMail::appendBodyAttachments(): not file/not readable: " << attachment << endl;
				return attachError.tqarg(attachment);
			}

			// Check if the attachment is a text file
			TQString mimeType = fi.mimetype();
			bool text = mimeType.startsWith("text/");
			if (!text)
			{
				for (int i = 0;  !text && textMimeTypes[i];  ++i)
					text = (mimeType == textMimeTypes[i]);
			}

			message += TQString::tqfromLatin1("\n--%1").tqarg(boundary.data());
			message += TQString::tqfromLatin1("\nContent-Type: %2; name=\"%3\"").tqarg(mimeType).tqarg(fi.text());
			message += TQString::tqfromLatin1("\nContent-Transfer-Encoding: %1").tqarg(TQString::tqfromLatin1(text ? "8bit" : "BASE64"));
			message += TQString::tqfromLatin1("\nContent-Disposition: attachment; filename=\"%4\"\n\n").tqarg(fi.text());

			// Read the file contents
			TQString tmpFile;
			if (!KIO::NetAccess::download(url, tmpFile, MainWindow::mainMainWindow())) {
				kdError(5950) << "KAMail::appendBodyAttachments(): load failure: " << attachment << endl;
				return attachError.tqarg(attachment);
			}
			TQFile file(tmpFile);
			if (!file.open(IO_ReadOnly) ) {
				kdDebug(5950) << "KAMail::appendBodyAttachments() tmp load error: " << attachment << endl;
				return attachError.tqarg(attachment);
			}
			TQIODevice::Offset size = file.size();
			char* contents = new char [size + 1];
			TQ_LONG bytes = file.readBlock(contents, size);
			file.close();
			contents[size] = 0;
			bool atterror = false;
			if (bytes == -1  ||  (TQIODevice::Offset)bytes < size) {
				kdDebug(5950) << "KAMail::appendBodyAttachments() read error: " << attachment << endl;
				atterror = true;
			}
			else if (text)
			{
				// Text attachment doesn't need conversion
				message += contents;
			}
			else
			{
				// Convert the attachment to BASE64 encoding
				TQIODevice::Offset base64Size;
				char* base64 = base64Encode(contents, size, base64Size);
				if (base64Size == (TQIODevice::Offset)-1) {
					kdDebug(5950) << "KAMail::appendBodyAttachments() base64 buffer overflow: " << attachment << endl;
					atterror = true;
				}
				else
					message += TQString::tqfromLatin1(base64, base64Size);
				delete[] base64;
			}
			delete[] contents;
			if (atterror)
				return attachError.tqarg(attachment);
		}
		message += TQString::tqfromLatin1("\n--%1--\n.\n").tqarg(boundary.data());
	}
	return TQString();
}

/******************************************************************************
* If any of the destination email addresses are non-local, display a
* notification message saying that an email has been queued for sending.
*/
void KAMail::notifyQueued(const KAEvent& event)
{
	KMime::Types::Address addr;
	TQString localhost = TQString::tqfromLatin1("localhost");
	TQString hostname  = getHostName();
	const EmailAddressList& addresses = event.emailAddresses();
	for (TQValueList<KCal::Person>::ConstIterator it = addresses.begin();  it != addresses.end();  ++it)
	{
		TQCString email = (*it).email().local8Bit();
		const char* em = email;
		if (!email.isEmpty()
		&&  HeaderParsing::parseAddress(em, em + email.length(), addr))
		{
			TQString domain = addr.mailboxList.first().addrSpec.domain;
			if (!domain.isEmpty()  &&  domain != localhost  &&  domain != hostname)
			{
				TQString text = (Preferences::emailClient() == Preferences::KMAIL)
				             ? i18n("An email has been queued to be sent by KMail")
				             : i18n("An email has been queued to be sent");
				KMessageBox::information(0, text, TQString(), Preferences::EMAIL_TQUEUED_NOTIFY);
				return;
			}
		}
	}
}

/******************************************************************************
*  Return whether any KMail identities exist.
*/
bool KAMail::identitiesExist()
{
	identityManager();    // create identity manager if not already done
	return mIdentityManager->begin() != mIdentityManager->end();
}
 
/******************************************************************************
*  Fetch the uoid of an email identity name or uoid string.
*/
uint KAMail::identityUoid(const TQString& identityUoidOrName)
{
	bool ok;
	uint id = identityUoidOrName.toUInt(&ok);
	if (!ok  ||  identityManager()->identityForUoid(id).isNull())
	{
		identityManager();   // fetch it if not already done
		for (KPIM::IdentityManager::ConstIterator it = mIdentityManager->begin();
		     it != mIdentityManager->end();  ++it)
		{
			if ((*it).identityName() == identityUoidOrName)
			{
				id = (*it).uoid();
				break;
			}
		}
	}
	return id;
}

/******************************************************************************
*  Fetch the user's email address configured in the KDE Control Centre.
*/
TQString KAMail::controlCentreAddress()
{
	KEMailSettings e;
	return e.getSetting(KEMailSettings::EmailAddress);
}

/******************************************************************************
*  Parse a list of email addresses, optionally containing display names,
*  entered by the user.
*  Reply = the invalid item if error, else empty string.
*/
TQString KAMail::convertAddresses(const TQString& items, EmailAddressList& list)
{
	list.clear();
	TQCString addrs = items.local8Bit();
	const char* ad = static_cast<const char*>(addrs);

	// parse an address-list
	TQValueList<KMime::Types::Address> maybeAddressList;
	if (!HeaderParsing::parseAddressList(ad, ad + addrs.length(), maybeAddressList))
		return TQString::fromLocal8Bit(ad);    // return the address in error

	// extract the mailboxes and complain if there are groups
	for (TQValueList<KMime::Types::Address>::ConstIterator it = maybeAddressList.begin();
	     it != maybeAddressList.end();  ++it)
	{
		TQString bad = convertAddress(*it, list);
		if (!bad.isEmpty())
			return bad;
	}
	return TQString();
}

#if 0
/******************************************************************************
*  Parse an email address, optionally containing display name, entered by the
*  user, and append it to the specified list.
*  Reply = the invalid item if error, else empty string.
*/
TQString KAMail::convertAddress(const TQString& item, EmailAddressList& list)
{
	TQCString addr = item.local8Bit();
	const char* ad = static_cast<const char*>(addr);
	KMime::Types::Address maybeAddress;
	if (!HeaderParsing::parseAddress(ad, ad + addr.length(), maybeAddress))
		return item;     // error
	return convertAddress(maybeAddress, list);
}
#endif

/******************************************************************************
*  Convert a single KMime::Types address to a KCal::Person instance and append
*  it to the specified list.
*/
TQString KAMail::convertAddress(KMime::Types::Address addr, EmailAddressList& list)
{
	if (!addr.displayName.isEmpty())
	{
		kdDebug(5950) << "mailbox groups not allowed! Name: \"" << addr.displayName << "\"" << endl;
		return addr.displayName;
	}
	const TQValueList<KMime::Types::Mailbox>& mblist = addr.mailboxList;
	for (TQValueList<KMime::Types::Mailbox>::ConstIterator mb = mblist.begin();
	     mb != mblist.end();  ++mb)
	{
		TQString addrPart = (*mb).addrSpec.localPart;
		if (!(*mb).addrSpec.domain.isEmpty())
		{
			addrPart += TQChar('@');
			addrPart += (*mb).addrSpec.domain;
		}
		list += KCal::Person((*mb).displayName, addrPart);
	}
	return TQString();
}

/*
TQString KAMail::convertAddresses(const TQString& items, TQStringList& list)
{
	EmailAddressList addrs;
	TQString item = convertAddresses(items, addrs);
	if (!item.isEmpty())
		return item;
	for (EmailAddressList::Iterator ad = addrs.begin();  ad != addrs.end();  ++ad)
	{
		item = (*ad).fullName().local8Bit();
		switch (checkAddress(item))
		{
			case 1:      // OK
				list += item;
				break;
			case 0:      // null address
				break;
			case -1:     // invalid address
				return item;
		}
	}
	return TQString();
}*/

/******************************************************************************
*  Check the validity of an email address.
*  Because internal email addresses don't have to abide by the usual internet
*  email address rules, only some basic checks are made.
*  Reply = 1 if alright, 0 if empty, -1 if error.
*/
int KAMail::checkAddress(TQString& address)
{
	address = address.stripWhiteSpace();
	// Check that there are no list separator characters present
	if (address.tqfind(',') >= 0  ||  address.tqfind(';') >= 0)
		return -1;
	int n = address.length();
	if (!n)
		return 0;
	int start = 0;
	int end   = n - 1;
	if (address[end] == '>')
	{
		// The email address is in <...>
		if ((start = address.tqfind('<')) < 0)
			return -1;
		++start;
		--end;
	}
	int i = address.tqfind('@', start);
	if (i >= 0)
	{
		if (i == start  ||  i == end)          // check @ isn't the first or last character
//		||  address.tqfind('@', i + 1) >= 0)    // check for multiple @ characters
			return -1;
	}
/*	else
	{
		// Allow the @ character to be missing if it's a local user
		if (!getpwnam(address.mid(start, end - start + 1).local8Bit()))
			return false;
	}
	for (int i = start;  i <= end;  ++i)
	{
		char ch = address[i].latin1();
		if (ch == '.'  ||  ch == '@'  ||  ch == '-'  ||  ch == '_'
		||  (ch >= 'A' && ch <= 'Z')  ||  (ch >= 'a' && ch <= 'z')
		||  (ch >= '0' && ch <= '9'))
			continue;
		return false;
	}*/
	return 1;
}

/******************************************************************************
*  Convert a comma or semicolon delimited list of attachments into a
*  TQStringList. The items are checked for validity.
*  Reply = the invalid item if error, else empty string.
*/
TQString KAMail::convertAttachments(const TQString& items, TQStringList& list)
{
	KURL url;
	list.clear();
	int length = items.length();
	for (int next = 0;  next < length;  )
	{
		// Find the first delimiter character (, or ;)
		int i = items.tqfind(',', next);
		if (i < 0)
			i = items.length();
		int sc = items.tqfind(';', next);
		if (sc < 0)
			sc = items.length();
		if (sc < i)
			i = sc;
		TQString item = items.mid(next, i - next).stripWhiteSpace();
		switch (checkAttachment(item))
		{
			case 1:   list += item;  break;
			case 0:   break;          // empty attachment name
			case -1:
			default:  return item;    // error
		}
		next = i + 1;
	}
	return TQString();
}

#if 0
/******************************************************************************
*  Convert a comma or semicolon delimited list of attachments into a
*  KURL::List. The items are checked for validity.
*  Reply = the invalid item if error, else empty string.
*/
TQString KAMail::convertAttachments(const TQString& items, KURL::List& list)
{
	KURL url;
	list.clear();
	TQCString addrs = items.local8Bit();
	int length = items.length();
	for (int next = 0;  next < length;  )
	{
		// Find the first delimiter character (, or ;)
		int i = items.tqfind(',', next);
		if (i < 0)
			i = items.length();
		int sc = items.tqfind(';', next);
		if (sc < 0)
			sc = items.length();
		if (sc < i)
			i = sc;
		TQString item = items.mid(next, i - next);
		switch (checkAttachment(item, &url))
		{
			case 1:   list += url;  break;
			case 0:   break;          // empty attachment name
			case -1:
			default:  return item;    // error
		}
		next = i + 1;
	}
	return TQString();
}
#endif

/******************************************************************************
*  Check for the existence of the attachment file.
*  If non-null, '*url' receives the KURL of the attachment.
*  Reply = 1 if attachment exists
*        = 0 if null name
*        = -1 if doesn't exist.
*/
int KAMail::checkAttachment(TQString& attachment, KURL* url)
{
	attachment = attachment.stripWhiteSpace();
	if (attachment.isEmpty())
	{
		if (url)
			*url = KURL();
		return 0;
	}
	// Check that the file exists
	KURL u = KURL::fromPathOrURL(attachment);
	u.cleanPath();
	if (url)
		*url = u;
	return checkAttachment(u) ? 1 : -1;
}

/******************************************************************************
*  Check for the existence of the attachment file.
*/
bool KAMail::checkAttachment(const KURL& url)
{
	KIO::UDSEntry uds;
	if (!KIO::NetAccess::stat(url, uds, MainWindow::mainMainWindow()))
		return false;       // doesn't exist
	KFileItem fi(uds, url);
	if (fi.isDir()  ||  !fi.isReadable())
		return false;
	return true;
}


/******************************************************************************
*  Convert a block of memory to Base64 encoding.
*  'outSize' is set to the number of bytes used in the returned block, or to
*            -1 if overflow.
*  Reply = BASE64 buffer, which the caller must delete[] afterwards.
*/
char* KAMail::base64Encode(const char* in, TQIODevice::Offset size, TQIODevice::Offset& outSize)
{
	const int MAX_LINELEN = 72;
	static unsigned char dtable[65] =
		"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
		"abcdefghijklmnopqrstuvwxyz"
		"0123456789+/";

	char* out = new char [2*size + 5];
	outSize = (TQIODevice::Offset)-1;
	TQIODevice::Offset outIndex = 0;
	int lineLength = 0;
	for (TQIODevice::Offset inIndex = 0;  inIndex < size;  )
	{
		unsigned char igroup[3];
		int n;
		for (n = 0;  n < 3;  ++n)
		{
			if (inIndex < size)
				igroup[n] = (unsigned char)in[inIndex++];
			else
			{
				igroup[n] = igroup[2] = 0;
				break;
			}
		}

		if (n > 0)
		{
			unsigned char ogroup[4];
			ogroup[0] = dtable[igroup[0] >> 2];
			ogroup[1] = dtable[((igroup[0] & 3) << 4) | (igroup[1] >> 4)];
			ogroup[2] = dtable[((igroup[1] & 0xF) << 2) | (igroup[2] >> 6)];
			ogroup[3] = dtable[igroup[2] & 0x3F];

			if (n < 3)
			{
				ogroup[3] = '=';
				if (n < 2)
					ogroup[2] = '=';
			}
			if (outIndex >= size*2)
			{
				delete[] out;
				return 0;
			}
			for (int i = 0;  i < 4;  ++i)
			{
				if (lineLength >= MAX_LINELEN)
				{
					out[outIndex++] = '\r';
					out[outIndex++] = '\n';
					lineLength = 0;
				}
				out[outIndex++] = ogroup[i];
				++lineLength;
			}
		}
	}

	if (outIndex + 2 < size*2)
	{
		out[outIndex++] = '\r';
		out[outIndex++] = '\n';
	}
	outSize = outIndex;
	return out;
}

/******************************************************************************
* Set the appropriate error messages for a given error string.
*/
TQStringList KAMail::errors(const TQString& err, bool sendfail)
{
	TQString error1 = sendfail ? i18n("Failed to send email")
	                          : i18n("Error copying sent email to KMail %1 folder").tqarg(i18n_sent_mail());
	if (err.isEmpty())
		return TQStringList(error1);
	TQStringList errs(TQString::tqfromLatin1("%1:").tqarg(error1));
	errs += err;
	return errs;
}

/******************************************************************************
*  Get the body of an email, given its serial number.
*/
TQString KAMail::getMailBody(TQ_UINT32 serialNumber)
{
	// Get the body of the email from KMail
	TQCString    replyType;
	TQByteArray  replyData;
	TQByteArray  data;
	TQDataStream arg(data, IO_WriteOnly);
	arg << serialNumber;
	arg << (int)0;
	TQString body;
	if (kapp->dcopClient()->call("kmail", "KMailIface", "getDecodedBodyPart(TQ_UINT32,int)", data, replyType, replyData)
	&&  replyType == TQSTRING_OBJECT_NAME_STRING)
	{
		TQDataStream reply_stream(replyData, IO_ReadOnly);
		reply_stream >> body;
	}
	else
		kdDebug(5950) << "KAMail::getMailBody(): kmail getDecodedBodyPart() call failed\n";
	return body;
}

namespace
{
/******************************************************************************
* Get the local system's host name.
*/
TQString getHostName()
{
        char hname[256];
        if (gethostname(hname, sizeof(hname)))
                return TQString();
        return TQString::fromLocal8Bit(hname);
}
}


/*=============================================================================
=  HeaderParsing :  modified and additional functions.
=  The following functions are modified from, or additional to, those in
=  libkdenetwork kmime_header_parsing.cpp.
=============================================================================*/

namespace HeaderParsing
{

using namespace KMime;
using namespace KMime::Types;
using namespace KMime::HeaderParsing;

/******************************************************************************
*  New function.
*  Allow a local user name to be specified as an email address.
*/
bool parseUserName( const char* & scursor, const char * const send,
                    TQString & result, bool isCRLF ) {

  TQString maybeLocalPart;
  TQString tmp;

  if ( scursor != send ) {
    // first, eat any whitespace
    eatCFWS( scursor, send, isCRLF );

    char ch = *scursor++;
    switch ( ch ) {
    case '.': // dot
    case '@':
    case '"': // quoted-string
      return false;

    default: // atom
      scursor--; // re-set scursor to point to ch again
      tmp = TQString();
      if ( parseAtom( scursor, send, result, false /* no 8bit */ ) ) {
        if (getpwnam(result.local8Bit()))
          return true;
      }
      return false; // parseAtom can only fail if the first char is non-atext.
    }
  }
  return false;
}

/******************************************************************************
*  Modified function.
*  Allow a local user name to be specified as an email address, and reinstate
*  the original scursor on error return.
*/
bool parseAddress( const char* & scursor, const char * const send,
		   Address & result, bool isCRLF ) {
  // address       := mailbox / group

  eatCFWS( scursor, send, isCRLF );
  if ( scursor == send ) return false;

  // first try if it's a single mailbox:
  Mailbox maybeMailbox;
  const char * oldscursor = scursor;
  if ( parseMailbox( scursor, send, maybeMailbox, isCRLF ) ) {
    // yes, it is:
    result.displayName = TQString();
    result.mailboxList.append( maybeMailbox );
    return true;
  }
  scursor = oldscursor;

  // KAlarm: Allow a local user name to be specified
  // no, it's not a single mailbox. Try if it's a local user name:
  TQString maybeUserName;
  if ( parseUserName( scursor, send, maybeUserName, isCRLF ) ) {
    // yes, it is:
    maybeMailbox.displayName = TQString();
    maybeMailbox.addrSpec.localPart = maybeUserName;
    maybeMailbox.addrSpec.domain = TQString();
    result.displayName = TQString();
    result.mailboxList.append( maybeMailbox );
    return true;
  }
  scursor = oldscursor;

  Address maybeAddress;

  // no, it's not a single mailbox. Try if it's a group:
  if ( !parseGroup( scursor, send, maybeAddress, isCRLF ) )
  {
    scursor = oldscursor;   // KAlarm: reinstate original scursor on error return
    return false;
  }

  result = maybeAddress;
  return true;
}

/******************************************************************************
*  Modified function.
*  Allow either ',' or ';' to be used as an email address separator.
*/
bool parseAddressList( const char* & scursor, const char * const send,
		       TQValueList<Address> & result, bool isCRLF ) {
  while ( scursor != send ) {
    eatCFWS( scursor, send, isCRLF );
    // end of header: this is OK.
    if ( scursor == send ) return true;
    // empty entry: ignore:
    if ( *scursor == ',' || *scursor == ';' ) { scursor++; continue; }   // KAlarm: allow ';' as address separator

    // parse one entry
    Address maybeAddress;
    if ( !parseAddress( scursor, send, maybeAddress, isCRLF ) ) return false;
    result.append( maybeAddress );

    eatCFWS( scursor, send, isCRLF );
    // end of header: this is OK.
    if ( scursor == send ) return true;
    // comma separating entries: eat it.
    if ( *scursor == ',' || *scursor == ';' ) scursor++;   // KAlarm: allow ';' as address separator
  }
  return true;
}

} // namespace HeaderParsing