summaryrefslogtreecommitdiffstats
path: root/kopete/protocols/irc/libkirc/ksslsocket.cpp
blob: 4dcf9ce888669fb8e244f9aa1b2091ce0e92ad1c (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
/*
    ksslsocket.cpp - KDE SSL Socket

    Copyright (c) 2005      by Tommi Rantala <tommi.rantala@cs.helsinki.fi>
    Copyright (c) 2004      by Jason Keirstead <jason@keirstead.org>

    Kopete    (c) 2002-2005 by the Kopete developers <kopete-devel@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.                                   *
    *                                                                       *
    *************************************************************************
*/

#include <tqsocketnotifier.h>

#include <dcopclient.h>
#include <klocale.h>
#include <kdebug.h>
#include <kssl.h>
#include <ksslinfodlg.h>
#include <ksslpeerinfo.h>
#include <ksslcertchain.h>
#include <ksslcertificatecache.h>
#include <kapplication.h>
#include <kmessagebox.h>

#include "ksslsocket.h"

struct KSSLSocketPrivate
{
	mutable KSSL *kssl;
	KSSLCertificateCache *cc;
	DCOPClient *dcc;
	TQMap<TQString,TQString> metaData;
	TQSocketNotifier *socketNotifier;
};

KSSLSocket::KSSLSocket() : KExtendedSocket()
{
	d = new KSSLSocketPrivate;
	d->kssl = 0;
	d->dcc = KApplication::kApplication()->dcopClient();
	d->cc = new KSSLCertificateCache;
	d->cc->reload();

	//No blocking
	setBlockingMode(false);

	//Connect internal slots
	TQObject::connect( this, TQT_SIGNAL(connectionSuccess()), this, TQT_SLOT(slotConnected()) );
	TQObject::connect( this, TQT_SIGNAL(closed(int)), this, TQT_SLOT(slotDisconnected()) );
	TQObject::connect( this, TQT_SIGNAL(connectionFailed(int)), this, TQT_SLOT(slotDisconnected()));
}

KSSLSocket::~KSSLSocket()
{
	//Close connection
	closeNow();

	if( d->kssl )
	{
		d->kssl->close();
		delete d->kssl;
	}

	delete d->cc;

	delete d;
}

TQ_LONG KSSLSocket::readBlock( char* data, TQ_ULONG maxLen )
{
	//Re-implemented because KExtSocket doesn't use this when not in buffered mode
	TQ_LONG retval = consumeReadBuffer(maxLen, data);

	if( retval == 0 )
	{
		if (sockfd == -1)
			return 0;

		retval = -1;
	}

	return retval;
}

int KSSLSocket::peekBlock( char* data, uint maxLen )
{
	//Re-implemented because KExtSocket doesn't use this when not in buffered mode
	if( socketStatus() < connected )
		return -2;

	if( sockfd == -1 )
		return -2;

	return consumeReadBuffer(maxLen, data, false);
}

TQ_LONG KSSLSocket::writeBlock( const char* data, TQ_ULONG len )
{
	return d->kssl->write( data, len );
}

#ifdef USE_QT4
qint64 KSSLSocket::bytesAvailable() const
#else // USE_QT4
int KSSLSocket::bytesAvailable() const
#endif // USE_QT4
{
	if( socketStatus() < connected )
		return -2;

	//Re-implemented because KExtSocket doesn't use this when not in buffered mode
	return KBufferedIO::bytesAvailable();
}

void KSSLSocket::slotReadData()
{
	kdDebug(14120) << k_funcinfo << d->kssl->pending() << endl;
	TQByteArray buff(512);
	int bytesRead = d->kssl->read( buff.data(), 512 );

	//Fill the read buffer
	feedReadBuffer( bytesRead, buff.data() );
	emit readyRead();
}

void KSSLSocket::slotConnected()
{
	if (!KSSL::doesSSLWork()) {
		kdError(14120) << k_funcinfo << "SSL not functional!" << endl;

		closeNow();
		emit sslFailure();
		return;
	}

	delete d->kssl;
	d->kssl = new KSSL();

	if (d->kssl->connect( sockfd ) != 1) {
		kdError(14120) << k_funcinfo << "SSL connect() failed." << endl;

		closeNow();
		emit sslFailure();
		return;
	}

	//Disconnect the KExtSocket notifier slot, we use our own
	TQObject::disconnect( readNotifier(), TQT_SIGNAL(activated( int )),
			this, TQT_SLOT(socketActivityRead()) );

	TQObject::connect( readNotifier(), TQT_SIGNAL(activated( int )),
			this, TQT_SLOT(slotReadData()) );

	readNotifier()->setEnabled(true);

	if (verifyCertificate() != 1) {
		closeNow();
		emit certificateRejected();
		return;
	}

	emit certificateAccepted();
}

void KSSLSocket::slotDisconnected()
{
	kdDebug(14120) << k_funcinfo << "Disconnected" << endl;

	if( readNotifier() )
		readNotifier()->setEnabled(false);

	delete d->kssl;
	d->kssl = 0L;
}

void KSSLSocket::showInfoDialog()
{
	if( socketStatus() == connected )
	{
		if (!d->dcc->isApplicationRegistered("kio_uiserver"))
		{
			KApplication::startServiceByDesktopPath("kio_uiserver.desktop",TQStringList());
		}

		TQByteArray data, ignore;
		TQCString ignoretype;
		TQDataStream arg(data, IO_WriteOnly);
		arg << "irc://" + peerAddress()->pretty() + ":" + port() << d->metaData;
		d->dcc->call("kio_uiserver", "UIServer",
			"showSSLInfoDialog(TQString,KIO::MetaData)", data, ignoretype, ignore);
	}
}

void KSSLSocket::setMetaData( const TQString &key, const TQVariant &data )
{
	TQVariant v = data;
	d->metaData[key] = v.asString();
}

bool KSSLSocket::hasMetaData( const TQString &key )
{
	return d->metaData.contains(key);
}

TQString KSSLSocket::metaData( const TQString &key )
{
	if( d->metaData.contains(key) )
		return d->metaData[key];
	return TQString();
}

/*
I basically copied the below from tcpKIO::SlaveBase.hpp, with some modificaions and formatting.

 * Copyright (C) 2000 Alex Zepeda <zipzippy@sonic.net
 * Copyright (C) 2001-2003 George Staikos <staikos@kde.org>
 * Copyright (C) 2001 Dawit Alemayehu <adawit@kde.org>
*/

int KSSLSocket::messageBox( KIO::SlaveBase::MessageBoxType type, const TQString &text, const TQString &caption,
	const TQString &buttonYes, const TQString &buttonNo )
{
	kdDebug(14120) << "messageBox " << type << " " << text << " - " << caption << buttonYes << buttonNo << endl;
	TQByteArray data, result;
	TQCString returnType;
	TQDataStream arg(data, IO_WriteOnly);
	arg << (int)1 << (int)type << text << caption << buttonYes << buttonNo;

	if (!d->dcc->isApplicationRegistered("kio_uiserver"))
	{
		KApplication::startServiceByDesktopPath("kio_uiserver.desktop",TQStringList());
	}

	d->dcc->call("kio_uiserver", "UIServer",
			"messageBox(int,int,TQString,TQString,TQString,TQString)", data, returnType, result);

	if( returnType == "int" )
	{
		int res;
		TQDataStream r(result, IO_ReadOnly);
		r >> res;
		return res;
	}
	else
		return 0; // communication failure
}


//  Returns 0 for failed verification, -1 for rejected cert and 1 for ok
int KSSLSocket::verifyCertificate()
{
	int rc = 0;
	bool permacache = false;
	bool _IPmatchesCN = false;
	int result;
	bool doAddHost = false;
	TQString ourHost = host();
	TQString ourIp = peerAddress()->pretty();

	TQString theurl = "irc://" + ourHost + ":" + port();

	if (!d->cc)
		d->cc = new KSSLCertificateCache;

	KSSLCertificate& pc = d->kssl->peerInfo().getPeerCertificate();

	KSSLCertificate::KSSLValidationList ksvl = pc.validateVerbose(KSSLCertificate::SSLServer);

	_IPmatchesCN = d->kssl->peerInfo().certMatchesAddress();

	if (!_IPmatchesCN)
	{
		ksvl << KSSLCertificate::InvalidHost;
	}

	KSSLCertificate::KSSLValidation ksv = KSSLCertificate::Ok;
	if (!ksvl.isEmpty())
		ksv = ksvl.first();

	/* Setting the various bits of meta-info that will be needed. */
	setMetaData("ssl_cipher", d->kssl->connectionInfo().getCipher());
	setMetaData("ssl_cipher_desc", d->kssl->connectionInfo().getCipherDescription());
	setMetaData("ssl_cipher_version", d->kssl->connectionInfo().getCipherVersion());
	setMetaData("ssl_cipher_used_bits", TQString::number(d->kssl->connectionInfo().getCipherUsedBits()));
	setMetaData("ssl_cipher_bits", TQString::number(d->kssl->connectionInfo().getCipherBits()));
	setMetaData("ssl_peer_ip", ourIp );

	TQString errorStr;
	for(KSSLCertificate::KSSLValidationList::ConstIterator it = ksvl.begin();
		it != ksvl.end(); ++it)
	{
		errorStr += TQString::number(*it)+":";
	}

	setMetaData("ssl_cert_errors", errorStr);
	setMetaData("ssl_peer_certificate", pc.toString());

	if (pc.chain().isValid() && pc.chain().depth() > 1)
	{
		TQString theChain;
		TQPtrList<KSSLCertificate> chain = pc.chain().getChain();
		for (KSSLCertificate *c = chain.first(); c; c = chain.next())
		{
			theChain += c->toString();
			theChain += "\n";
		}
		setMetaData("ssl_peer_chain", theChain);
	}
	else
	{
		setMetaData("ssl_peer_chain", "");
	}

	setMetaData("ssl_cert_state", TQString::number(ksv));

	if (ksv == KSSLCertificate::Ok)
	{
		rc = 1;
		setMetaData("ssl_action", "accept");
	}

	// Since we're the tqparent, we need to teach the child.
	setMetaData("ssl_parent_ip", ourIp );
	setMetaData("ssl_parent_cert", pc.toString());

	//  - Read from cache and see if there is a policy for this
	KSSLCertificateCache::KSSLCertificatePolicy cp = d->cc->getPolicyByCertificate(pc);

	//  - validation code
	if (ksv != KSSLCertificate::Ok)
	{
		if( cp == KSSLCertificateCache::Unknown || cp == KSSLCertificateCache::Ambiguous)
		{
			cp = KSSLCertificateCache::Prompt;
		}
		else
		{
			// A policy was already set so let's honor that.
			permacache = d->cc->isPermanent(pc);
		}

		if (!_IPmatchesCN && cp == KSSLCertificateCache::Accept)
		{
			cp = KSSLCertificateCache::Prompt;
		}

		// Precondition: cp is one of Reject, Accept or Prompt
		switch (cp)
		{
			case KSSLCertificateCache::Accept:
				rc = 1;
				break;

			case KSSLCertificateCache::Reject:
				rc = -1;
				break;

			case KSSLCertificateCache::Prompt:
			{
				do
				{
					if (ksv == KSSLCertificate::InvalidHost)
					{
						TQString msg = i18n("The IP address of the host %1 "
								"does not match the one the "
								"certificate was issued to.");
						result = messageBox( KIO::SlaveBase::WarningYesNoCancel,
						msg.tqarg(ourHost),
						i18n("Server Authentication"),
						i18n("&Details"),
						i18n("Co&ntinue") );
					}
					else
					{
						TQString msg = i18n("The server certificate failed the "
							"authenticity test (%1).");
						result = messageBox( KIO::SlaveBase::WarningYesNoCancel,
						msg.tqarg(ourHost),
						i18n("Server Authentication"),
						i18n("&Details"),
						i18n("Co&ntinue") );
					}

					if (result == KMessageBox::Yes)
					{
						showInfoDialog();
					}
				}
				while (result == KMessageBox::Yes);

				if (result == KMessageBox::No)
				{
					rc = 1;
					cp = KSSLCertificateCache::Accept;
					doAddHost = true;
					result = messageBox( KIO::SlaveBase::WarningYesNo,
							i18n("Would you like to accept this "
							"certificate forever without "
							"being prompted?"),
							i18n("Server Authentication"),
								i18n("&Forever"),
								i18n("&Current Sessions Only"));
					if (result == KMessageBox::Yes)
						permacache = true;
					else
						permacache = false;
				}
				else
				{
					rc = -1;
					cp = KSSLCertificateCache::Prompt;
				}

				break;
		}
		default:
		kdDebug(14120) << "SSL error in cert code."
				<< "Please report this to kopete-devel@kde.org."
				<< endl;
		break;
		}
	}

	//  - cache the results
	d->cc->addCertificate(pc, cp, permacache);
	if (doAddHost)
		d->cc->addHost(pc, ourHost);


	if (rc == -1)
		return rc;


	kdDebug(14120) << "SSL connection information follows:" << endl
		<< "+-----------------------------------------------" << endl
		<< "| Cipher: " << d->kssl->connectionInfo().getCipher() << endl
		<< "| Description: " << d->kssl->connectionInfo().getCipherDescription() << endl
		<< "| Version: " << d->kssl->connectionInfo().getCipherVersion() << endl
		<< "| Strength: " << d->kssl->connectionInfo().getCipherUsedBits()
		<< " of " << d->kssl->connectionInfo().getCipherBits()
		<< " bits used." << endl
		<< "| PEER:" << endl
		<< "| Subject: " << d->kssl->peerInfo().getPeerCertificate().getSubject() << endl
		<< "| Issuer: " << d->kssl->peerInfo().getPeerCertificate().getIssuer() << endl
		<< "| Validation: " << (int)ksv << endl
		<< "| Certificate matches IP: " << _IPmatchesCN << endl
		<< "+-----------------------------------------------"
		<< endl;

	// sendMetaData();  Do not call this function!!
	return rc;
}


#include "ksslsocket.moc"