|
1 /* |
|
2 * Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Provides services for SDP Security Descriptions. |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 |
|
20 |
|
21 // INCLUDE FILES |
|
22 |
|
23 #include <e32base.h> |
|
24 #include <e32std.h> |
|
25 |
|
26 #include <sdporiginfield.h> |
|
27 #include <sdpconnectionfield.h> |
|
28 #include <sdpmediafield.h> |
|
29 #include <sdpattributefield.h> |
|
30 #include <sdpcodecstringpool.h> |
|
31 #include <sdpdocument.h> |
|
32 #include "mcesrvstream.h" |
|
33 #include "mcecomcodec.h" |
|
34 #include "mcemmlogs.h" |
|
35 #include "mcesecuremediasession.h" |
|
36 #include "mcesecuredesstream.h" |
|
37 #include "mceclientserver.h" |
|
38 |
|
39 |
|
40 // ================= MEMBER FUNCTIONS ========================================== |
|
41 |
|
42 // ----------------------------------------------------------------------------- |
|
43 // CMceSecureMediaSession::CMceSecureMediaSession |
|
44 // ----------------------------------------------------------------------------- |
|
45 CMceSecureMediaSession::CMceSecureMediaSession( CMceComSession& aSession, |
|
46 CMceMediaManager& aManager, |
|
47 CMccSecureInterface& aSecureInterface) |
|
48 : iManager( aManager ), |
|
49 iSession( aSession ), |
|
50 iSecureInterface(aSecureInterface), |
|
51 iKeyNeedUpdated( ETrue ), |
|
52 iCryptoContextUpdate (EFalse), |
|
53 iLSReadyToBind ( ETrue ), |
|
54 iStringTable( NULL ) |
|
55 { |
|
56 |
|
57 } |
|
58 |
|
59 // ----------------------------------------------------------------------------- |
|
60 // CMceSecureMediaSession::ConstructL |
|
61 // ----------------------------------------------------------------------------- |
|
62 void CMceSecureMediaSession::ConstructL() |
|
63 { |
|
64 } |
|
65 |
|
66 |
|
67 // ----------------------------------------------------------------------------- |
|
68 // CMceSecureMediaSession::NewL |
|
69 // ----------------------------------------------------------------------------- |
|
70 CMceSecureMediaSession* CMceSecureMediaSession::NewL( CMceComSession& aSession, |
|
71 CMceMediaManager& aManager, |
|
72 CMccSecureInterface& aSecureInterface ) |
|
73 { |
|
74 CMceSecureMediaSession* self = NewLC( aSession, aManager, aSecureInterface ); |
|
75 CleanupStack::Pop( self ); |
|
76 return self; |
|
77 } |
|
78 |
|
79 |
|
80 // ----------------------------------------------------------------------------- |
|
81 // CMceSecureMediaSession::NewLC |
|
82 // ----------------------------------------------------------------------------- |
|
83 CMceSecureMediaSession* CMceSecureMediaSession::NewLC( CMceComSession& aSession, |
|
84 CMceMediaManager& aManager, |
|
85 CMccSecureInterface& aSecureInterface ) |
|
86 { |
|
87 CMceSecureMediaSession* self = new ( ELeave ) CMceSecureMediaSession( aSession, |
|
88 aManager, |
|
89 aSecureInterface ); |
|
90 CleanupStack::PushL( self ); |
|
91 self->ConstructL(); |
|
92 return self; |
|
93 } |
|
94 |
|
95 |
|
96 // ----------------------------------------------------------------------------- |
|
97 // CMceSecureMediaSession::~CMceSecureMediaSession |
|
98 // ----------------------------------------------------------------------------- |
|
99 CMceSecureMediaSession::~CMceSecureMediaSession() |
|
100 { |
|
101 //Remove secure streams |
|
102 iMceSecureDesStreams.ResetAndDestroy(); |
|
103 } |
|
104 |
|
105 |
|
106 // ----------------------------------------------------------------------------- |
|
107 // CMceSecureMediaSession:: |
|
108 // ----------------------------------------------------------------------------- |
|
109 // |
|
110 void CMceSecureMediaSession::EncodeSecureDesSdpOfferL( |
|
111 CMceComMediaStream& aStream, |
|
112 CSdpMediaField& aMediaLine) |
|
113 { |
|
114 |
|
115 MCEMM_DEBUG("CMceSecureMediaSession::(), Entry "); |
|
116 User::LeaveIfNull( &aMediaLine ); |
|
117 |
|
118 // find media lines and create sec stream and add security attribute |
|
119 CMceSecureDesStream* secStream=NULL; |
|
120 |
|
121 if ( iMceSecureDesStreams.Count()!=0 ) |
|
122 { |
|
123 //find sec stream |
|
124 TInt secStreamCount = iMceSecureDesStreams.Count(); |
|
125 for (TInt j=0; j<secStreamCount; j++) |
|
126 { |
|
127 CMceSecureDesStream* secDesStream = iMceSecureDesStreams[j]; |
|
128 if (IfStreamMatchMedia(aStream, *secDesStream, aMediaLine) ) |
|
129 { |
|
130 //out of loop |
|
131 j=secStreamCount; |
|
132 secStream = secDesStream; |
|
133 //remove or clean secure sdp params if any |
|
134 secStream->RemvoeSecureSdp(aMediaLine); |
|
135 } |
|
136 } |
|
137 } |
|
138 if (!secStream) |
|
139 { |
|
140 //create sec stream depends on how many media lines |
|
141 /*RFC 4568 7.1.1 |
|
142 The inline parameter conveys the SRTP master key used by an endpoint |
|
143 to encrypt the SRTP and SRTCP streams transmitted by that endpoint. |
|
144 The same key is used by the recipient to decrypt those streams. |
|
145 */ |
|
146 secStream = CMceSecureDesStream::NewL( |
|
147 *this, |
|
148 aMediaLine, |
|
149 iSecureInterface, |
|
150 aStream); |
|
151 CleanupStack::PushL(secStream); |
|
152 iMceSecureDesStreams.AppendL(secStream); |
|
153 CleanupStack::Pop(secStream); |
|
154 } |
|
155 //Encode sdp |
|
156 if (secStream) |
|
157 { |
|
158 secStream->EncodeSecureSdpL(aMediaLine, EFalse); |
|
159 } |
|
160 |
|
161 MCEMM_DEBUG("CMceSecureMediaSession::(), Exit "); |
|
162 |
|
163 } |
|
164 |
|
165 // ----------------------------------------------------------------------------- |
|
166 // CMceSecureMediaSession::DecodeSecureDesSdpAnswerL |
|
167 // ----------------------------------------------------------------------------- |
|
168 // |
|
169 void CMceSecureMediaSession::DecodeSecureDesSdpAnswerL( CMceComMediaStream& aStream, |
|
170 CSdpMediaField& aMediaLine) |
|
171 { |
|
172 MCEMM_DEBUG("CMceSecureMediaSession::DecodeSecureDesSdpAnswerL(), Entry "); |
|
173 // decode media lines for answer |
|
174 |
|
175 User::LeaveIfNull( &aMediaLine ); |
|
176 |
|
177 if ( IsSecureSdpMsgL( aMediaLine ) ) |
|
178 { |
|
179 TBool foundCryptoIn=EFalse; |
|
180 |
|
181 CMceSecureDesStream* secStream=NULL; |
|
182 //one uplink stream for this codec must be set already |
|
183 TInt secStreamCount = iMceSecureDesStreams.Count(); |
|
184 for (TInt i=0; i<secStreamCount; i++) |
|
185 { |
|
186 CMceSecureDesStream* secDesStream = iMceSecureDesStreams[i]; |
|
187 if (IfStreamMatchMedia(aStream, *secDesStream, aMediaLine)) |
|
188 { |
|
189 i=secStreamCount; |
|
190 secStream = secDesStream; |
|
191 foundCryptoIn=ETrue; |
|
192 } |
|
193 } |
|
194 //create sec stream depends on how many media lines |
|
195 if (!foundCryptoIn && (aStream.iLocalMediaPort == aMediaLine.Port()|| |
|
196 aStream.iRemoteMediaPort ==aMediaLine.Port()) ) |
|
197 { |
|
198 secStream = CMceSecureDesStream::NewL(*this, |
|
199 aMediaLine, |
|
200 iSecureInterface, |
|
201 aStream); |
|
202 |
|
203 iMceSecureDesStreams.Append(secStream); |
|
204 } |
|
205 |
|
206 //Decode sdp |
|
207 if (secStream) |
|
208 { |
|
209 TRAPD( err, secStream->DecodeSecureSdpAnswerL( aMediaLine ) ); |
|
210 if ( err ) |
|
211 { |
|
212 TInt index = iMceSecureDesStreams.Find( secStream ); |
|
213 if ( KErrNotFound != index ) |
|
214 { |
|
215 iMceSecureDesStreams.Remove( index ); |
|
216 } |
|
217 delete secStream; |
|
218 secStream = NULL; |
|
219 User::Leave( err ); |
|
220 } |
|
221 } |
|
222 } |
|
223 else |
|
224 { |
|
225 RemoveSecureCrypto( ); |
|
226 //Expected secure sdp answer but not found. leave to end the sesssion |
|
227 User::Leave( KErrArgument ); |
|
228 } |
|
229 |
|
230 MCEMM_DEBUG("CMceSecureMediaSession::DecodeSecureDesSdpAnswerL(), Exit "); |
|
231 |
|
232 } |
|
233 |
|
234 // ----------------------------------------------------------------------------- |
|
235 // CMceSecureMediaSession::DecodeSecureDesSdpOfferL |
|
236 // ----------------------------------------------------------------------------- |
|
237 |
|
238 void CMceSecureMediaSession::DecodeSecureDesSdpOfferL( CMceComMediaStream& aStream, |
|
239 CSdpMediaField& aMediaLine) |
|
240 { |
|
241 MCEMM_DEBUG("CMceSecureMediaSession::DecodeSecureDesSdpOfferL(), Entry "); |
|
242 |
|
243 User::LeaveIfNull( &aMediaLine ); |
|
244 |
|
245 TBool foundCryptoIn = EFalse; |
|
246 |
|
247 if ( IsSecureSdpMsgL( aMediaLine ) ) |
|
248 { |
|
249 CMceSecureDesStream* secStream=NULL; |
|
250 /*RFC 4568 7.1.1 |
|
251 The inline parameter conveys the SRTP master key used by an endpoint |
|
252 to encrypt the SRTP and SRTCP streams transmitted by that endpoint. |
|
253 The same key is used by the recipient to decrypt those streams. |
|
254 */ |
|
255 TInt secStreamCount = iMceSecureDesStreams.Count(); |
|
256 for (TInt i=0; i<secStreamCount; i++) |
|
257 { |
|
258 |
|
259 CMceSecureDesStream* secDesStream = iMceSecureDesStreams[i]; |
|
260 if (IfStreamMatchMedia(aStream, *secDesStream, aMediaLine)) |
|
261 { |
|
262 i=secStreamCount; |
|
263 secStream = secDesStream; |
|
264 foundCryptoIn=ETrue; |
|
265 } |
|
266 |
|
267 } |
|
268 |
|
269 //create sec stream depends on how many media lines |
|
270 if (!foundCryptoIn) |
|
271 { |
|
272 secStream = CMceSecureDesStream::NewL( *this, |
|
273 aMediaLine, |
|
274 iSecureInterface, |
|
275 aStream); |
|
276 |
|
277 iMceSecureDesStreams.Append( secStream ); |
|
278 } |
|
279 |
|
280 //Decode sdp |
|
281 if (secStream) |
|
282 { |
|
283 TRAPD( err, secStream->DecodeSecureSdpL( aMediaLine ) ); |
|
284 if ( err ) |
|
285 { |
|
286 TInt index = iMceSecureDesStreams.Find( secStream ); |
|
287 if ( KErrNotFound != index ) |
|
288 { |
|
289 iMceSecureDesStreams.Remove( index ); |
|
290 } |
|
291 delete secStream; |
|
292 secStream = NULL; |
|
293 User::Leave( err ); |
|
294 } |
|
295 } |
|
296 } |
|
297 else |
|
298 { |
|
299 RemoveSecureCrypto( ); |
|
300 } |
|
301 |
|
302 MCEMM_DEBUG("CMceSecureMediaSession::DecodeSecureDesSdpOfferL(), Exit " ); |
|
303 } |
|
304 |
|
305 // ----------------------------------------------------------------------------- |
|
306 // CMceSecureMediaSession::DecodeSecureDesSdpOfferL |
|
307 // ----------------------------------------------------------------------------- |
|
308 |
|
309 void CMceSecureMediaSession::DecodeSecureDesSdpUpdateL( CMceComMediaStream& aStream, |
|
310 CSdpMediaField& aMediaLine) |
|
311 { |
|
312 MCEMM_DEBUG("CMceSecureMediaSession::DecodeSecureDesSdpOfferL(), Entry "); |
|
313 |
|
314 User::LeaveIfNull( &aMediaLine ); |
|
315 if ( IsSecureSdpMsgL( aMediaLine ) ) |
|
316 { |
|
317 |
|
318 // find media lines and create sec stream and add security attribute |
|
319 |
|
320 CMceSecureDesStream* secStream=NULL; |
|
321 |
|
322 //one uplink stream for this codec must be set already |
|
323 TInt secStreamCount = iMceSecureDesStreams.Count(); |
|
324 for (TInt i=0; i<secStreamCount; i++ ) |
|
325 { |
|
326 secStream = iMceSecureDesStreams[i]; |
|
327 if (IfStreamMatchMedia( aStream, *secStream,aMediaLine)) |
|
328 { |
|
329 secStream->DecodeSecureSdpL( aMediaLine ); |
|
330 |
|
331 } |
|
332 |
|
333 } |
|
334 } |
|
335 else |
|
336 { |
|
337 RemoveSecureCrypto( ); |
|
338 } |
|
339 |
|
340 MCEMM_DEBUG("CMceSecureMediaSession::DecodeSecureDesSdpOfferL(), Exit "); |
|
341 } |
|
342 |
|
343 // ----------------------------------------------------------------------------- |
|
344 // CMceSecureMediaSession::EncodeSecureDesSdpAnswerL |
|
345 // ----------------------------------------------------------------------------- |
|
346 void CMceSecureMediaSession::EncodeSecureDesSdpAnswerL( CMceComMediaStream& aStream, |
|
347 CSdpMediaField& aMediaLine ) |
|
348 { |
|
349 MCEMM_DEBUG("CMceSecureMediaSession::EncodeSecureDesSdpAnswerL(), Entry "); |
|
350 User::LeaveIfNull( &aMediaLine); |
|
351 |
|
352 TBool foundCryptoOut=EFalse; |
|
353 |
|
354 // find media lines and create sec stream and add security attribute |
|
355 CMceSecureDesStream* secStream=NULL; |
|
356 |
|
357 TInt secStreamCount = iMceSecureDesStreams.Count(); |
|
358 for (TInt i=0; i<secStreamCount; i++) |
|
359 { |
|
360 CMceSecureDesStream* secDesStream = iMceSecureDesStreams[i]; |
|
361 if (IfStreamMatchMedia(aStream, *secDesStream, aMediaLine)) |
|
362 { |
|
363 //HARDCode here as refresh first later on should also know when to |
|
364 // set as updated mode |
|
365 |
|
366 i=secStreamCount; |
|
367 secStream = secDesStream; |
|
368 //remove or clean secure sdp params if any |
|
369 secStream->RemvoeSecureSdp(aMediaLine); |
|
370 |
|
371 foundCryptoOut=ETrue; |
|
372 } |
|
373 |
|
374 } |
|
375 //create sec stream depends on how many media lines |
|
376 if (!foundCryptoOut) |
|
377 { |
|
378 secStream = CMceSecureDesStream::NewL(*this, |
|
379 aMediaLine, |
|
380 iSecureInterface, |
|
381 aStream); |
|
382 CleanupStack::PushL( secStream); |
|
383 iMceSecureDesStreams.AppendL(secStream); |
|
384 CleanupStack::Pop(secStream); |
|
385 |
|
386 } |
|
387 |
|
388 //Decode sdp |
|
389 if (secStream) |
|
390 { |
|
391 secStream->EncodeSecureSdpL(aMediaLine, ETrue); |
|
392 } |
|
393 |
|
394 MCEMM_DEBUG("CMceSecureMediaSession::EncodeSecureDesSdpAnswerL(), Exit "); |
|
395 } |
|
396 |
|
397 |
|
398 // ----------------------------------------------------------------------------- |
|
399 // CMceSecureMediaSession:: CleanSecureCryptoInfo() |
|
400 // ----------------------------------------------------------------------------- |
|
401 void CMceSecureMediaSession:: CleanSecureCryptoInfoL(CSdpMediaField& aMediaLine) |
|
402 { |
|
403 MCEMM_DEBUG("CMceSecureMediaSession::CleanSecureCryptoInfoL(), Entry "); |
|
404 User::LeaveIfNull( &aMediaLine ); |
|
405 |
|
406 // find media lines and create sec stream and add security attribute |
|
407 CMceSecureDesStream* secStream=NULL; |
|
408 |
|
409 //find sec stream |
|
410 TInt secStreamCount = iMceSecureDesStreams.Count(); |
|
411 for (TInt j=0; j<secStreamCount; j++) |
|
412 { |
|
413 CMceSecureDesStream* secDesStream = iMceSecureDesStreams[j]; |
|
414 if (IfStreamMatchMedia(secDesStream->MediaStream(), *secDesStream, aMediaLine)) |
|
415 { |
|
416 //out of loop |
|
417 j=secStreamCount; |
|
418 secStream = secDesStream; |
|
419 secStream->RemvoeSecureSdp(aMediaLine ); |
|
420 } |
|
421 } |
|
422 |
|
423 User::LeaveIfError( aMediaLine.IsValid() ); |
|
424 MCEMM_DEBUG("CMceSecureMediaSession::CleanSecureCryptoInfoL(), Exit "); |
|
425 |
|
426 } |
|
427 |
|
428 // ----------------------------------------------------------------------------- |
|
429 // CMceSecureMediaSession::Bind() |
|
430 // ----------------------------------------------------------------------------- |
|
431 TInt CMceSecureMediaSession::BindStreamCrypto( ) |
|
432 |
|
433 { |
|
434 MCEMM_DEBUG("CMceSecureDesStream::BindStreamCrypto(), Entry"); |
|
435 TInt err(KErrNone); |
|
436 if (iSession.iClientCryptoSuites.Count()) |
|
437 { |
|
438 for (TInt i=0; i<iSession.MccStreams().Count(); i++) |
|
439 { |
|
440 CMceSrvStream* stream = iSession.MccStreams()[i]; |
|
441 MCEMM_DEBUG_DVALUE(" CMceSrvStream id =", stream->Data().Id().iId ); |
|
442 MCEMM_DEBUG_DVALUE(" App id", stream->Data().Id().iAppId ); |
|
443 TInt secStreamCount = iMceSecureDesStreams.Count(); |
|
444 for (TInt j=0; j<secStreamCount; j++) |
|
445 { |
|
446 CMceSecureDesStream* secureStream=iMceSecureDesStreams[j]; |
|
447 MCEMM_DEBUG_DVALUE(" SrvStream id in SecureStream ", secureStream->MediaStream().Id().iId); |
|
448 MCEMM_DEBUG_DVALUE(" App id in SecureStream ", secureStream->MediaStream().Id().iAppId); |
|
449 if (stream->Data().Id()== secureStream->MediaStream().Id() || |
|
450 ( stream->Data().BoundStream() && |
|
451 stream->Data().iLinkedStream->Id() == secureStream->MediaStream().Id() ) ) |
|
452 { |
|
453 //bind |
|
454 secureStream->BindCrypto(*stream); |
|
455 |
|
456 } |
|
457 } |
|
458 } |
|
459 } |
|
460 MCEMM_DEBUG("CMceSecureDesStream::BindStreamCrypto(), Exit"); |
|
461 return err; |
|
462 } |
|
463 |
|
464 |
|
465 // ----------------------------------------------------------------------------- |
|
466 // CMceSecureMediaSession::ContextNeedUpdated |
|
467 // ----------------------------------------------------------------------------- |
|
468 |
|
469 void CMceSecureMediaSession::ContextNeedUpdated( TUint32 aContextId ) |
|
470 { |
|
471 TInt secStreamCount = iMceSecureDesStreams.Count(); |
|
472 for (TInt j=0; j<secStreamCount; j++) |
|
473 { |
|
474 CMceSecureDesStream* secDesStream = iMceSecureDesStreams[j]; |
|
475 if (secDesStream->CompareContextId(aContextId)) |
|
476 { |
|
477 secDesStream->iCryptoUpdateNeeded = ETrue; |
|
478 } |
|
479 } |
|
480 } |
|
481 |
|
482 // ----------------------------------------------------------------------------- |
|
483 // CMceSecureMediaSession::IfStreamMatchMedia |
|
484 // ----------------------------------------------------------------------------- |
|
485 |
|
486 TBool CMceSecureMediaSession::IfStreamMatchMedia( CMceComMediaStream& aMediaStream, |
|
487 CMceSecureDesStream& aStream, |
|
488 CSdpMediaField& aMediaLine) |
|
489 { |
|
490 TBool match=EFalse; |
|
491 if (aStream.MediaField().Media()== aMediaLine.Media() && |
|
492 aStream.MediaStream().iLocalMediaPort==aMediaStream.iLocalMediaPort && |
|
493 aStream.MediaStream().iRemoteMediaPort==aMediaStream.iRemoteMediaPort ) |
|
494 { |
|
495 match =ETrue; |
|
496 |
|
497 if (aMediaStream.iLocalMediaPort != aMediaLine.Port()&& |
|
498 aMediaStream.iRemoteMediaPort !=aMediaLine.Port()) |
|
499 { |
|
500 match=EFalse; |
|
501 } |
|
502 } |
|
503 return match; |
|
504 } |
|
505 // ----------------------------------------------------------------------------- |
|
506 // CMceSecureMediaSession::CloneStreams |
|
507 // ----------------------------------------------------------------------------- |
|
508 |
|
509 void CMceSecureMediaSession::CopyStreamsL(CMceSecureMediaSession& aSession) |
|
510 { |
|
511 iKeyNeedUpdated = aSession.iKeyNeedUpdated; |
|
512 TInt secStreamCount = aSession.iMceSecureDesStreams.Count(); |
|
513 for (TInt j=0; j<secStreamCount; j++) |
|
514 { |
|
515 CMceSecureDesStream* copyFrom =aSession.iMceSecureDesStreams[j]; |
|
516 CMceComMediaStream* mediaStream=NULL; |
|
517 for (TInt i=0; i<iSession.Streams().Count();i++) |
|
518 { |
|
519 mediaStream = static_cast <CMceComMediaStream*> (iSession.Streams()[i]); |
|
520 |
|
521 if (mediaStream->iLocalMediaPort == copyFrom->MediaStream().iLocalMediaPort && |
|
522 mediaStream->iRemoteMediaPort == copyFrom->MediaStream().iRemoteMediaPort) |
|
523 { |
|
524 CMceSecureDesStream* copy = CMceSecureDesStream::NewL(*this, |
|
525 copyFrom->MediaField(), |
|
526 iSecureInterface, |
|
527 *mediaStream); |
|
528 CleanupStack::PushL( copy); |
|
529 copy->CopyStreamCryptoL(*copyFrom); |
|
530 iMceSecureDesStreams.AppendL(copy); |
|
531 CleanupStack::Pop( copy ); |
|
532 } |
|
533 } |
|
534 |
|
535 |
|
536 } |
|
537 } |
|
538 |
|
539 |
|
540 //----------------------------------------------------------------------------- |
|
541 // CMceSecureMediaSession::IsSecureSdpMsg () |
|
542 // |
|
543 // ----------------------------------------------------------------------------- |
|
544 // |
|
545 TBool CMceSecureMediaSession::IsSecureSdpMsgL( CSdpMediaField& aMediaLine ) |
|
546 { |
|
547 //answer or offer/update or refresh |
|
548 TInt findSAVP = aMediaLine.Protocol().DesC().Find( KProtocolSAVP ); |
|
549 TInt findSAVPF = aMediaLine.Protocol().DesC().Find( KProtocolSAVPF ); |
|
550 TInt findAVP = aMediaLine.Protocol().DesC().Find( KProtocolAVP ); |
|
551 TBool isSecureMsg = ETrue; |
|
552 TInt attrCount = SdpCryptoAttributeCount( aMediaLine ); |
|
553 |
|
554 |
|
555 if ( findAVP != KErrNotFound && attrCount ) |
|
556 { |
|
557 iSession.Modifier( KMceSecureSession ) = KMceSecurePlainAVP; |
|
558 } |
|
559 else if ( ( findSAVP != KErrNotFound || findSAVPF != KErrNotFound ) && |
|
560 attrCount ) |
|
561 { |
|
562 iSession.Modifier( KMceSecureSession ) = KMceSecureNormal; |
|
563 } |
|
564 else if ( ( findSAVP != KErrNotFound || findSAVPF != KErrNotFound ) && |
|
565 !attrCount ) |
|
566 { |
|
567 User::Leave( KErrArgument ); |
|
568 } |
|
569 else |
|
570 { |
|
571 return !isSecureMsg; |
|
572 } |
|
573 |
|
574 |
|
575 return isSecureMsg; |
|
576 } |
|
577 |
|
578 // ----------------------------------------------------------------------------- |
|
579 // CMceSecureMediaSession::SdpCryptoAttributeCount() |
|
580 // |
|
581 // ----------------------------------------------------------------------------- |
|
582 // |
|
583 TInt CMceSecureMediaSession::SdpCryptoAttributeCount( CSdpMediaField& aMediaLine) |
|
584 { |
|
585 MCEMM_DEBUG("CMceSecureMediaSession::SdpCryptoAttributeCount(), Entry"); |
|
586 RPointerArray< CSdpAttributeField > attrList = aMediaLine.AttributeFields(); |
|
587 CSdpAttributeField* attributeField = NULL; |
|
588 TInt attrCount = attrList.Count(); |
|
589 TInt attrbuiteCryptoCount = 0; |
|
590 for (TInt j = 0; j < attrCount; j++ ) |
|
591 { |
|
592 attributeField = attrList[j]; |
|
593 |
|
594 RStringF attribute = attributeField->Attribute(); |
|
595 |
|
596 // check if attribute is 'crypto' |
|
597 if ( KErrNotFound != attribute.DesC().Match( KCrypto ) ) |
|
598 { |
|
599 attrbuiteCryptoCount++; |
|
600 } |
|
601 } |
|
602 |
|
603 MCEMM_DEBUG("CMceSecureMediaSession::SdpCryptoAttributeCount(), Exit"); |
|
604 return attrbuiteCryptoCount; |
|
605 } |
|
606 |
|
607 // ----------------------------------------------------------------------------- |
|
608 // CMceSecureMediaSession::SdpCryptoAttributeCount() |
|
609 // |
|
610 // ----------------------------------------------------------------------------- |
|
611 // |
|
612 void CMceSecureMediaSession::RemoveSecureCrypto( ) |
|
613 { |
|
614 //clear comsession crypto |
|
615 TInt count = iSession.iClientCryptoSuites.Count(); |
|
616 for (TInt i = count; i > 0; i--) |
|
617 { |
|
618 iSession.iClientCryptoSuites.Remove( i-1 ); |
|
619 iSession.iIsSecureSession = EFalse; |
|
620 } |
|
621 } |
|
622 // End of File |