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9166f840 | 1 | /** @file\r |
2 | The Common operations used by IKE Exchange Process.\r | |
3 | \r | |
e8837edd | 4 | (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>\r |
ce8e582c | 5 | Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.<BR>\r |
9166f840 | 6 | \r |
7 | This program and the accompanying materials\r | |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php.\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include "Utility.h"\r | |
18 | #include "IpSecDebug.h"\r | |
19 | #include "IkeService.h"\r | |
20 | #include "IpSecConfigImpl.h"\r | |
21 | \r | |
22 | UINT16 mIkev2EncryptAlgorithmList[IKEV2_SUPPORT_ENCRYPT_ALGORITHM_NUM] = {\r | |
23 | IKEV2_TRANSFORM_ID_ENCR_3DES,\r | |
24 | IKEV2_TRANSFORM_ID_ENCR_AES_CBC, \r | |
25 | };\r | |
26 | \r | |
27 | UINT16 mIkev2PrfAlgorithmList[IKEV2_SUPPORT_PRF_ALGORITHM_NUM] = {\r | |
28 | IKEV2_TRANSFORM_ID_PRF_HMAC_SHA1,\r | |
29 | };\r | |
30 | \r | |
31 | UINT16 mIkev2DhGroupAlgorithmList[IKEV2_SUPPORT_DH_ALGORITHM_NUM] = {\r | |
32 | IKEV2_TRANSFORM_ID_DH_1024MODP,\r | |
33 | IKEV2_TRANSFORM_ID_DH_2048MODP,\r | |
34 | };\r | |
35 | \r | |
36 | UINT16 mIkev2AuthAlgorithmList[IKEV2_SUPPORT_AUTH_ALGORITHM_NUM] = {\r | |
37 | IKEV2_TRANSFORM_ID_AUTH_HMAC_SHA1_96,\r | |
38 | };\r | |
39 | \r | |
40 | /**\r | |
41 | Allocate buffer for IKEV2_SA_SESSION and initialize it.\r | |
42 | \r | |
43 | @param[in] Private Pointer to IPSEC_PRIVATE_DATA.\r | |
44 | @param[in] UdpService Pointer to IKE_UDP_SERVICE related to this IKE SA Session.\r | |
45 | \r | |
46 | @return Pointer to IKEV2_SA_SESSION or NULL.\r | |
47 | \r | |
48 | **/\r | |
49 | IKEV2_SA_SESSION *\r | |
50 | Ikev2SaSessionAlloc (\r | |
51 | IN IPSEC_PRIVATE_DATA *Private,\r | |
52 | IN IKE_UDP_SERVICE *UdpService\r | |
53 | )\r | |
54 | {\r | |
55 | EFI_STATUS Status;\r | |
56 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
57 | IKEV2_SA_SESSION *IkeSaSession;\r | |
58 | \r | |
59 | IkeSaSession = AllocateZeroPool (sizeof (IKEV2_SA_SESSION));\r | |
6b16c9e7 JW |
60 | if (IkeSaSession == NULL) {\r |
61 | return NULL;\r | |
62 | }\r | |
9166f840 | 63 | \r |
64 | //\r | |
65 | // Initialize the fields of IkeSaSession and its SessionCommon.\r | |
66 | //\r | |
67 | IkeSaSession->NCookie = NULL;\r | |
68 | IkeSaSession->Signature = IKEV2_SA_SESSION_SIGNATURE;\r | |
69 | IkeSaSession->InitiatorCookie = IkeGenerateCookie ();\r | |
70 | IkeSaSession->ResponderCookie = 0;\r | |
71 | //\r | |
72 | // BUGBUG: Message ID starts from 2 is to match the OpenSwan requirement, but it \r | |
73 | // might not match the IPv6 Logo. In its test specification, it mentions that\r | |
74 | // the Message ID should start from zero after the IKE_SA_INIT exchange.\r | |
75 | //\r | |
76 | IkeSaSession->MessageId = 2;\r | |
77 | SessionCommon = &IkeSaSession->SessionCommon;\r | |
78 | SessionCommon->UdpService = UdpService;\r | |
79 | SessionCommon->Private = Private;\r | |
80 | SessionCommon->IkeSessionType = IkeSessionTypeIkeSa;\r | |
81 | SessionCommon->IkeVer = 2;\r | |
82 | SessionCommon->AfterEncodePayload = NULL;\r | |
83 | SessionCommon->BeforeDecodePayload = NULL;\r | |
84 | \r | |
85 | //\r | |
86 | // Create a resend notfiy event for retry.\r | |
87 | //\r | |
88 | Status = gBS->CreateEvent (\r | |
89 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
90 | TPL_CALLBACK,\r | |
91 | Ikev2ResendNotify,\r | |
92 | SessionCommon,\r | |
93 | &SessionCommon->TimeoutEvent\r | |
94 | );\r | |
95 | \r | |
96 | if (EFI_ERROR (Status)) {\r | |
97 | FreePool (IkeSaSession);\r | |
98 | return NULL;\r | |
99 | }\r | |
100 | \r | |
101 | //\r | |
102 | // Initialize the lists in IkeSaSession.\r | |
103 | //\r | |
104 | InitializeListHead (&IkeSaSession->ChildSaSessionList);\r | |
105 | InitializeListHead (&IkeSaSession->ChildSaEstablishSessionList);\r | |
106 | InitializeListHead (&IkeSaSession->InfoMIDList);\r | |
107 | InitializeListHead (&IkeSaSession->DeleteSaList);\r | |
108 | \r | |
109 | return IkeSaSession;\r | |
110 | }\r | |
111 | \r | |
112 | /**\r | |
113 | Register the established IKEv2 SA into Private->Ikev2EstablishedList. If there is\r | |
114 | IKEV2_SA_SESSION with same remote peer IP, remove the old one then register the\r | |
115 | new one.\r | |
116 | \r | |
117 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION to be registered.\r | |
118 | @param[in] Private Pointer to IPSEC_PRAVATE_DATA.\r | |
119 | \r | |
120 | **/\r | |
121 | VOID\r | |
122 | Ikev2SaSessionReg (\r | |
123 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
124 | IN IPSEC_PRIVATE_DATA *Private\r | |
125 | )\r | |
126 | {\r | |
127 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
128 | IKEV2_SA_SESSION *OldIkeSaSession;\r | |
129 | EFI_STATUS Status;\r | |
130 | UINT64 Lifetime;\r | |
131 | \r | |
132 | //\r | |
133 | // Keep IKE SA exclusive to remote ip address.\r | |
134 | //\r | |
135 | SessionCommon = &IkeSaSession->SessionCommon;\r | |
136 | OldIkeSaSession = Ikev2SaSessionRemove (&Private->Ikev2EstablishedList, &SessionCommon->RemotePeerIp);\r | |
137 | if (OldIkeSaSession != NULL) {\r | |
138 | //\r | |
139 | // TODO: It should delete all child SAs if rekey the IKE SA.\r | |
140 | //\r | |
141 | Ikev2SaSessionFree (OldIkeSaSession);\r | |
142 | }\r | |
143 | \r | |
144 | //\r | |
145 | // Cleanup the fields of SessionCommon for processing.\r | |
146 | // \r | |
147 | Ikev2SessionCommonRefresh (SessionCommon);\r | |
148 | \r | |
149 | //\r | |
150 | // Insert the ready IKE SA session into established list.\r | |
151 | //\r | |
152 | Ikev2SaSessionInsert (&Private->Ikev2EstablishedList, IkeSaSession, &SessionCommon->RemotePeerIp);\r | |
153 | \r | |
154 | //\r | |
155 | // Create a notfiy event for the IKE SA life time counting.\r | |
156 | //\r | |
157 | Status = gBS->CreateEvent (\r | |
158 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
159 | TPL_CALLBACK,\r | |
160 | Ikev2LifetimeNotify,\r | |
161 | SessionCommon,\r | |
162 | &SessionCommon->TimeoutEvent\r | |
163 | );\r | |
164 | if (EFI_ERROR(Status)){\r | |
165 | //\r | |
166 | // If TimerEvent creation failed, the SA will be alive untill user disable it or \r | |
167 | // receiving a Delete Payload from peer. \r | |
168 | //\r | |
169 | return;\r | |
170 | }\r | |
171 | \r | |
172 | //\r | |
173 | // Start to count the lifetime of the IKE SA.\r | |
174 | //\r | |
175 | if (IkeSaSession->Spd->Data->ProcessingPolicy->SaLifetime.HardLifetime == 0) {\r | |
176 | Lifetime = IKE_SA_DEFAULT_LIFETIME;\r | |
177 | } else {\r | |
178 | Lifetime = IkeSaSession->Spd->Data->ProcessingPolicy->SaLifetime.HardLifetime;\r | |
179 | }\r | |
180 | \r | |
181 | Status = gBS->SetTimer (\r | |
182 | SessionCommon->TimeoutEvent,\r | |
183 | TimerRelative,\r | |
184 | MultU64x32(Lifetime, 10000000) // ms->100ns\r | |
185 | );\r | |
186 | if (EFI_ERROR(Status)){\r | |
187 | //\r | |
188 | // If SetTimer failed, the SA will be alive untill user disable it or \r | |
189 | // receiving a Delete Payload from peer. \r | |
190 | //\r | |
191 | return ;\r | |
192 | }\r | |
193 | \r | |
194 | DEBUG ((\r | |
195 | DEBUG_INFO,\r | |
196 | "\n------IkeSa established and start to count down %d seconds lifetime\n",\r | |
197 | Lifetime\r | |
198 | ));\r | |
199 | \r | |
200 | return ;\r | |
201 | }\r | |
202 | \r | |
203 | /**\r | |
204 | Find a IKEV2_SA_SESSION by the remote peer IP.\r | |
205 | \r | |
206 | @param[in] SaSessionList SaSession List to be searched.\r | |
207 | @param[in] RemotePeerIp Pointer to specified IP address.\r | |
208 | \r | |
209 | @return Pointer to IKEV2_SA_SESSION if find one or NULL.\r | |
210 | \r | |
211 | **/\r | |
212 | IKEV2_SA_SESSION *\r | |
213 | Ikev2SaSessionLookup (\r | |
214 | IN LIST_ENTRY *SaSessionList,\r | |
215 | IN EFI_IP_ADDRESS *RemotePeerIp\r | |
216 | )\r | |
217 | {\r | |
218 | LIST_ENTRY *Entry;\r | |
219 | IKEV2_SA_SESSION *IkeSaSession;\r | |
220 | \r | |
221 | NET_LIST_FOR_EACH (Entry, SaSessionList) {\r | |
222 | IkeSaSession = IKEV2_SA_SESSION_BY_SESSION (Entry);\r | |
223 | \r | |
224 | if (CompareMem (\r | |
225 | &IkeSaSession->SessionCommon.RemotePeerIp,\r | |
226 | RemotePeerIp,\r | |
227 | sizeof (EFI_IP_ADDRESS)\r | |
228 | ) == 0) {\r | |
229 | \r | |
230 | return IkeSaSession;\r | |
231 | }\r | |
232 | }\r | |
233 | \r | |
234 | return NULL;\r | |
235 | }\r | |
236 | \r | |
237 | /**\r | |
238 | Insert a IKE_SA_SESSION into IkeSaSession list. The IkeSaSession list is either\r | |
239 | Private->Ikev2SaSession list or Private->Ikev2EstablishedList list.\r | |
240 | \r | |
241 | @param[in] SaSessionList Pointer to list to be inserted into.\r | |
242 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION to be inserted. \r | |
243 | @param[in] RemotePeerIp Pointer to EFI_IP_ADDRESSS to indicate the \r | |
244 | unique IKEV2_SA_SESSION.\r | |
245 | \r | |
246 | **/\r | |
247 | VOID\r | |
248 | Ikev2SaSessionInsert (\r | |
249 | IN LIST_ENTRY *SaSessionList,\r | |
250 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
251 | IN EFI_IP_ADDRESS *RemotePeerIp\r | |
252 | )\r | |
253 | {\r | |
254 | Ikev2SaSessionRemove (SaSessionList, RemotePeerIp);\r | |
255 | InsertTailList (SaSessionList, &IkeSaSession->BySessionTable);\r | |
256 | }\r | |
257 | \r | |
258 | /**\r | |
259 | Remove the SA Session by Remote Peer IP.\r | |
260 | \r | |
261 | @param[in] SaSessionList Pointer to list to be searched.\r | |
262 | @param[in] RemotePeerIp Pointer to EFI_IP_ADDRESS to use for SA Session search.\r | |
263 | \r | |
264 | @retval Pointer to IKEV2_SA_SESSION with the specified remote IP address or NULL. \r | |
265 | \r | |
266 | **/\r | |
267 | IKEV2_SA_SESSION *\r | |
268 | Ikev2SaSessionRemove (\r | |
269 | IN LIST_ENTRY *SaSessionList,\r | |
270 | IN EFI_IP_ADDRESS *RemotePeerIp\r | |
271 | )\r | |
272 | {\r | |
273 | LIST_ENTRY *Entry;\r | |
274 | IKEV2_SA_SESSION *IkeSaSession;\r | |
275 | \r | |
276 | NET_LIST_FOR_EACH (Entry, SaSessionList) {\r | |
277 | IkeSaSession = IKEV2_SA_SESSION_BY_SESSION (Entry);\r | |
278 | \r | |
279 | if (CompareMem (\r | |
280 | &IkeSaSession->SessionCommon.RemotePeerIp,\r | |
281 | RemotePeerIp,\r | |
282 | sizeof (EFI_IP_ADDRESS)\r | |
283 | ) == 0) {\r | |
284 | \r | |
285 | RemoveEntryList (Entry);\r | |
286 | return IkeSaSession;\r | |
287 | }\r | |
288 | }\r | |
289 | \r | |
290 | return NULL;\r | |
291 | }\r | |
292 | \r | |
293 | /**\r | |
294 | Marking a SA session as on deleting.\r | |
295 | \r | |
296 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION.\r | |
297 | \r | |
298 | @retval EFI_SUCCESS Find the related SA session and marked it.\r | |
299 | \r | |
300 | **/\r | |
301 | EFI_STATUS\r | |
302 | Ikev2SaSessionOnDeleting (\r | |
303 | IN IKEV2_SA_SESSION *IkeSaSession\r | |
304 | )\r | |
305 | {\r | |
306 | return EFI_SUCCESS;\r | |
307 | }\r | |
308 | \r | |
309 | /**\r | |
310 | Free specified Seession Common. The session common would belong to a IKE SA or \r | |
311 | a Child SA.\r | |
312 | \r | |
313 | @param[in] SessionCommon Pointer to a Session Common.\r | |
314 | \r | |
315 | **/\r | |
316 | VOID\r | |
317 | Ikev2SaSessionCommonFree (\r | |
318 | IN IKEV2_SESSION_COMMON *SessionCommon\r | |
319 | )\r | |
320 | {\r | |
321 | \r | |
322 | ASSERT (SessionCommon != NULL);\r | |
323 | \r | |
324 | if (SessionCommon->LastSentPacket != NULL) {\r | |
325 | IkePacketFree (SessionCommon->LastSentPacket);\r | |
326 | }\r | |
327 | \r | |
328 | if (SessionCommon->SaParams != NULL) {\r | |
329 | FreePool (SessionCommon->SaParams);\r | |
330 | }\r | |
331 | if (SessionCommon->TimeoutEvent != NULL) {\r | |
332 | gBS->CloseEvent (SessionCommon->TimeoutEvent);\r | |
333 | }\r | |
334 | }\r | |
335 | \r | |
336 | /**\r | |
337 | After IKE/Child SA is estiblished, close the time event and free sent packet.\r | |
338 | \r | |
339 | @param[in] SessionCommon Pointer to a Session Common.\r | |
340 | \r | |
341 | **/\r | |
342 | VOID\r | |
343 | Ikev2SessionCommonRefresh (\r | |
344 | IN IKEV2_SESSION_COMMON *SessionCommon\r | |
345 | )\r | |
346 | {\r | |
347 | ASSERT (SessionCommon != NULL);\r | |
348 | \r | |
349 | gBS->CloseEvent (SessionCommon->TimeoutEvent);\r | |
350 | SessionCommon->TimeoutEvent = NULL;\r | |
351 | SessionCommon->TimeoutInterval = 0;\r | |
352 | SessionCommon->RetryCount = 0;\r | |
353 | if (SessionCommon->LastSentPacket != NULL) {\r | |
354 | IkePacketFree (SessionCommon->LastSentPacket);\r | |
355 | SessionCommon->LastSentPacket = NULL;\r | |
356 | }\r | |
357 | \r | |
358 | return ;\r | |
359 | }\r | |
360 | /**\r | |
361 | Free specified IKEV2 SA Session. \r | |
362 | \r | |
363 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION to be freed.\r | |
364 | \r | |
365 | **/\r | |
366 | VOID\r | |
367 | Ikev2SaSessionFree (\r | |
368 | IN IKEV2_SA_SESSION *IkeSaSession\r | |
369 | )\r | |
370 | {\r | |
371 | IKEV2_SESSION_KEYS *IkeKeys;\r | |
372 | LIST_ENTRY *Entry;\r | |
373 | IKEV2_CHILD_SA_SESSION *ChildSa;\r | |
374 | IKEV2_DH_BUFFER *DhBuffer;\r | |
375 | \r | |
376 | ASSERT (IkeSaSession != NULL);\r | |
377 | \r | |
378 | //\r | |
379 | // Delete Common Session\r | |
380 | //\r | |
381 | Ikev2SaSessionCommonFree (&IkeSaSession->SessionCommon);\r | |
382 | \r | |
383 | //\r | |
384 | // Delete ChildSaEstablish List and SAD\r | |
385 | //\r | |
386 | for (Entry = IkeSaSession->ChildSaEstablishSessionList.ForwardLink;\r | |
387 | Entry != &IkeSaSession->ChildSaEstablishSessionList;\r | |
388 | ) {\r | |
389 | \r | |
390 | ChildSa = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
391 | Entry = Entry->ForwardLink;\r | |
392 | Ikev2ChildSaSilentDelete (ChildSa->IkeSaSession, ChildSa->LocalPeerSpi);\r | |
393 | \r | |
394 | }\r | |
395 | \r | |
396 | //\r | |
397 | // Delete ChildSaSessionList\r | |
398 | //\r | |
399 | for ( Entry = IkeSaSession->ChildSaSessionList.ForwardLink;\r | |
400 | Entry != &IkeSaSession->ChildSaSessionList;\r | |
401 | ){\r | |
402 | ChildSa = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
403 | Entry = Entry->ForwardLink;\r | |
404 | RemoveEntryList (Entry->BackLink);\r | |
405 | Ikev2ChildSaSessionFree (ChildSa);\r | |
406 | }\r | |
407 | \r | |
408 | //\r | |
409 | // Delete DhBuffer and Keys\r | |
410 | //\r | |
411 | if (IkeSaSession->IkeKeys != NULL) {\r | |
412 | IkeKeys = IkeSaSession->IkeKeys;\r | |
413 | DhBuffer = IkeKeys->DhBuffer;\r | |
414 | \r | |
415 | //\r | |
416 | // Delete DhBuffer\r | |
417 | //\r | |
418 | Ikev2DhBufferFree (DhBuffer);\r | |
419 | \r | |
420 | //\r | |
421 | // Delete Keys\r | |
422 | // \r | |
423 | if (IkeKeys->SkAiKey != NULL) {\r | |
424 | FreePool (IkeKeys->SkAiKey);\r | |
425 | }\r | |
426 | if (IkeKeys->SkArKey != NULL) {\r | |
427 | FreePool (IkeKeys->SkArKey);\r | |
428 | }\r | |
429 | if (IkeKeys->SkdKey != NULL) {\r | |
430 | FreePool (IkeKeys->SkdKey);\r | |
431 | }\r | |
432 | if (IkeKeys->SkEiKey != NULL) {\r | |
433 | FreePool (IkeKeys->SkEiKey);\r | |
434 | }\r | |
435 | if (IkeKeys->SkErKey != NULL) {\r | |
436 | FreePool (IkeKeys->SkErKey);\r | |
437 | }\r | |
438 | if (IkeKeys->SkPiKey != NULL) {\r | |
439 | FreePool (IkeKeys->SkPiKey);\r | |
440 | }\r | |
441 | if (IkeKeys->SkPrKey != NULL) {\r | |
442 | FreePool (IkeKeys->SkPrKey);\r | |
443 | }\r | |
444 | FreePool (IkeKeys);\r | |
445 | }\r | |
446 | \r | |
447 | if (IkeSaSession->SaData != NULL) {\r | |
448 | FreePool (IkeSaSession->SaData);\r | |
449 | }\r | |
450 | \r | |
451 | if (IkeSaSession->NiBlock != NULL) {\r | |
452 | FreePool (IkeSaSession->NiBlock);\r | |
453 | }\r | |
454 | \r | |
455 | if (IkeSaSession->NrBlock != NULL) {\r | |
456 | FreePool (IkeSaSession->NrBlock);\r | |
457 | }\r | |
458 | \r | |
459 | if (IkeSaSession->NCookie != NULL) {\r | |
460 | FreePool (IkeSaSession->NCookie);\r | |
461 | }\r | |
462 | \r | |
463 | if (IkeSaSession->InitPacket != NULL) {\r | |
464 | FreePool (IkeSaSession->InitPacket);\r | |
465 | }\r | |
466 | \r | |
467 | if (IkeSaSession->RespPacket != NULL) {\r | |
468 | FreePool (IkeSaSession->RespPacket);\r | |
469 | }\r | |
470 | \r | |
471 | FreePool (IkeSaSession);\r | |
472 | \r | |
473 | return ;\r | |
474 | }\r | |
475 | \r | |
476 | /**\r | |
477 | Increase the MessageID in IkeSaSession.\r | |
478 | \r | |
479 | @param[in] IkeSaSession Pointer to a specified IKEV2_SA_SESSION.\r | |
480 | \r | |
481 | **/\r | |
482 | VOID\r | |
483 | Ikev2SaSessionIncreaseMessageId (\r | |
484 | IN IKEV2_SA_SESSION *IkeSaSession\r | |
485 | )\r | |
486 | {\r | |
487 | if (IkeSaSession->MessageId < 0xffffffff) {\r | |
488 | IkeSaSession->MessageId ++;\r | |
489 | } else {\r | |
490 | //\r | |
491 | // TODO: Trigger Rekey process.\r | |
492 | //\r | |
493 | }\r | |
494 | }\r | |
495 | \r | |
496 | /**\r | |
497 | Allocate memory for IKEV2 Child SA Session.\r | |
498 | \r | |
499 | @param[in] UdpService Pointer to IKE_UDP_SERVICE.\r | |
500 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION related to this Child SA \r | |
501 | Session.\r | |
502 | \r | |
503 | @retval Pointer of a new created IKEV2 Child SA Session or NULL.\r | |
504 | \r | |
505 | **/\r | |
506 | IKEV2_CHILD_SA_SESSION *\r | |
507 | Ikev2ChildSaSessionAlloc (\r | |
508 | IN IKE_UDP_SERVICE *UdpService,\r | |
509 | IN IKEV2_SA_SESSION *IkeSaSession\r | |
510 | )\r | |
511 | {\r | |
512 | EFI_STATUS Status;\r | |
513 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
514 | IKEV2_SESSION_COMMON *ChildSaCommon;\r | |
515 | IKEV2_SESSION_COMMON *SaCommon;\r | |
516 | \r | |
517 | ChildSaSession = AllocateZeroPool (sizeof (IKEV2_CHILD_SA_SESSION));\r | |
518 | if (ChildSaSession == NULL) {\r | |
519 | return NULL;\r | |
520 | }\r | |
521 | \r | |
522 | //\r | |
523 | // Initialize the fields of ChildSaSession and its SessionCommon.\r | |
524 | //\r | |
525 | ChildSaSession->Signature = IKEV2_CHILD_SA_SESSION_SIGNATURE;\r | |
526 | ChildSaSession->IkeSaSession = IkeSaSession;\r | |
527 | ChildSaSession->MessageId = IkeSaSession->MessageId;\r | |
96c13c01 JW |
528 | \r |
529 | //\r | |
530 | // Generate an new SPI.\r | |
531 | //\r | |
532 | Status = IkeGenerateSpi (IkeSaSession, &(ChildSaSession->LocalPeerSpi));\r | |
533 | if (EFI_ERROR (Status)) {\r | |
534 | FreePool (ChildSaSession);\r | |
535 | return NULL;\r | |
536 | }\r | |
537 | \r | |
9166f840 | 538 | ChildSaCommon = &ChildSaSession->SessionCommon;\r |
539 | ChildSaCommon->UdpService = UdpService;\r | |
540 | ChildSaCommon->Private = IkeSaSession->SessionCommon.Private;\r | |
541 | ChildSaCommon->IkeSessionType = IkeSessionTypeChildSa;\r | |
542 | ChildSaCommon->IkeVer = 2;\r | |
543 | ChildSaCommon->AfterEncodePayload = Ikev2ChildSaAfterEncodePayload;\r | |
544 | ChildSaCommon->BeforeDecodePayload = Ikev2ChildSaBeforeDecodePayload;\r | |
545 | SaCommon = &ChildSaSession->IkeSaSession->SessionCommon;\r | |
546 | \r | |
547 | //\r | |
548 | // Create a resend notfiy event for retry.\r | |
549 | //\r | |
550 | Status = gBS->CreateEvent (\r | |
551 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
552 | TPL_CALLBACK,\r | |
553 | Ikev2ResendNotify,\r | |
554 | ChildSaCommon,\r | |
555 | &ChildSaCommon->TimeoutEvent\r | |
556 | );\r | |
557 | if (EFI_ERROR (Status)) {\r | |
558 | FreePool (ChildSaSession);\r | |
559 | return NULL;\r | |
560 | }\r | |
561 | \r | |
562 | CopyMem (&ChildSaCommon->LocalPeerIp, &SaCommon->LocalPeerIp, sizeof (EFI_IP_ADDRESS));\r | |
563 | CopyMem (&ChildSaCommon->RemotePeerIp, &SaCommon->RemotePeerIp, sizeof (EFI_IP_ADDRESS));\r | |
564 | \r | |
565 | return ChildSaSession;\r | |
566 | }\r | |
567 | \r | |
568 | /**\r | |
569 | Register a established IKEv2 Child SA into IkeSaSession->ChildSaEstablishSessionList. \r | |
570 | If the there is IKEV2_CHILD_SA_SESSION with same remote peer IP, remove the old one \r | |
571 | then register the new one.\r | |
572 | \r | |
573 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION to be registered.\r | |
574 | @param[in] Private Pointer to IPSEC_PRAVATE_DATA.\r | |
575 | \r | |
576 | **/\r | |
577 | VOID\r | |
578 | Ikev2ChildSaSessionReg (\r | |
579 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession,\r | |
580 | IN IPSEC_PRIVATE_DATA *Private\r | |
581 | )\r | |
582 | {\r | |
583 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
584 | IKEV2_CHILD_SA_SESSION *OldChildSaSession;\r | |
585 | IKEV2_SA_SESSION *IkeSaSession;\r | |
9166f840 | 586 | EFI_STATUS Status;\r |
587 | UINT64 Lifetime;\r | |
588 | \r | |
589 | //\r | |
590 | // Keep the IKE SA exclusive.\r | |
591 | //\r | |
592 | SessionCommon = &ChildSaSession->SessionCommon;\r | |
593 | IkeSaSession = ChildSaSession->IkeSaSession;\r | |
594 | OldChildSaSession = Ikev2ChildSaSessionRemove (\r | |
595 | &IkeSaSession->ChildSaEstablishSessionList,\r | |
596 | ChildSaSession->LocalPeerSpi,\r | |
597 | IKEV2_ESTABLISHED_CHILDSA_LIST\r | |
598 | );\r | |
599 | if (OldChildSaSession != NULL) {\r | |
600 | //\r | |
601 | // Free the old one.\r | |
602 | //\r | |
603 | Ikev2ChildSaSessionFree (OldChildSaSession);\r | |
604 | }\r | |
605 | \r | |
606 | //\r | |
607 | // Store the ready child SA into SAD.\r | |
608 | //\r | |
609 | Ikev2StoreSaData (ChildSaSession);\r | |
610 | \r | |
611 | //\r | |
612 | // Cleanup the fields of SessionCommon for processing.\r | |
613 | // \r | |
614 | Ikev2SessionCommonRefresh (SessionCommon);\r | |
615 | \r | |
616 | //\r | |
617 | // Insert the ready child SA session into established list.\r | |
618 | //\r | |
619 | Ikev2ChildSaSessionInsert (&IkeSaSession->ChildSaEstablishSessionList, ChildSaSession);\r | |
620 | \r | |
621 | //\r | |
622 | // Create a Notify event for the IKE SA life time counting.\r | |
623 | //\r | |
624 | Status = gBS->CreateEvent (\r | |
625 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
626 | TPL_CALLBACK,\r | |
627 | Ikev2LifetimeNotify,\r | |
628 | SessionCommon,\r | |
629 | &SessionCommon->TimeoutEvent\r | |
630 | );\r | |
631 | if (EFI_ERROR(Status)){\r | |
632 | return ;\r | |
633 | }\r | |
634 | \r | |
635 | //\r | |
636 | // Start to count the lifetime of the IKE SA.\r | |
637 | //\r | |
9166f840 | 638 | if (ChildSaSession->Spd->Data->ProcessingPolicy->SaLifetime.HardLifetime != 0){\r |
639 | Lifetime = ChildSaSession->Spd->Data->ProcessingPolicy->SaLifetime.HardLifetime;\r | |
640 | } else {\r | |
641 | Lifetime = CHILD_SA_DEFAULT_LIFETIME;\r | |
642 | }\r | |
643 | \r | |
644 | Status = gBS->SetTimer (\r | |
645 | SessionCommon->TimeoutEvent,\r | |
646 | TimerRelative,\r | |
647 | MultU64x32(Lifetime, 10000000) // ms->100ns\r | |
648 | );\r | |
649 | if (EFI_ERROR(Status)){\r | |
650 | return ;\r | |
651 | }\r | |
652 | \r | |
653 | DEBUG ((\r | |
654 | DEBUG_INFO,\r | |
655 | "\n------ChildSa established and start to count down %d seconds lifetime\n",\r | |
656 | Lifetime\r | |
657 | ));\r | |
658 | \r | |
659 | return ;\r | |
660 | }\r | |
661 | \r | |
662 | /**\r | |
663 | Find the ChildSaSession by it's MessagId.\r | |
664 | \r | |
665 | @param[in] SaSessionList Pointer to a ChildSaSession List.\r | |
666 | @param[in] Mid The messageId used to search ChildSaSession.\r | |
667 | \r | |
668 | @return Pointer to IKEV2_CHILD_SA_SESSION or NULL.\r | |
669 | \r | |
670 | **/\r | |
671 | IKEV2_CHILD_SA_SESSION *\r | |
672 | Ikev2ChildSaSessionLookupByMid (\r | |
673 | IN LIST_ENTRY *SaSessionList,\r | |
674 | IN UINT32 Mid\r | |
675 | )\r | |
676 | {\r | |
677 | LIST_ENTRY *Entry;\r | |
678 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
44de1013 | 679 | \r |
9166f840 | 680 | NET_LIST_FOR_EACH (Entry, SaSessionList) {\r |
681 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
44de1013 | 682 | \r |
9166f840 | 683 | if (ChildSaSession->MessageId == Mid) {\r |
44de1013 HT |
684 | return ChildSaSession;\r |
685 | }\r | |
9166f840 | 686 | }\r |
687 | return NULL;\r | |
688 | }\r | |
689 | \r | |
690 | /**\r | |
691 | This function find the Child SA by the specified SPI.\r | |
44de1013 HT |
692 | \r |
693 | This functin find a ChildSA session by searching the ChildSaSessionlist of\r | |
9166f840 | 694 | the input IKEV2_SA_SESSION by specified MessageID.\r |
44de1013 | 695 | \r |
9166f840 | 696 | @param[in] SaSessionList Pointer to List to be searched.\r |
697 | @param[in] Spi Specified SPI.\r | |
44de1013 | 698 | \r |
9166f840 | 699 | @return Pointer to IKEV2_CHILD_SA_SESSION or NULL.\r |
700 | \r | |
701 | **/\r | |
702 | IKEV2_CHILD_SA_SESSION *\r | |
703 | Ikev2ChildSaSessionLookupBySpi (\r | |
704 | IN LIST_ENTRY *SaSessionList,\r | |
705 | IN UINT32 Spi\r | |
706 | )\r | |
707 | {\r | |
708 | LIST_ENTRY *Entry;\r | |
709 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
44de1013 | 710 | \r |
9166f840 | 711 | NET_LIST_FOR_EACH (Entry, SaSessionList) {\r |
712 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
44de1013 | 713 | \r |
9166f840 | 714 | if (ChildSaSession->RemotePeerSpi == Spi || ChildSaSession->LocalPeerSpi == Spi) {\r |
44de1013 HT |
715 | return ChildSaSession;\r |
716 | }\r | |
717 | }\r | |
9166f840 | 718 | \r |
719 | return NULL;\r | |
720 | }\r | |
721 | \r | |
722 | /**\r | |
723 | Insert a Child SA Session into the specified ChildSa list.\r | |
724 | \r | |
725 | @param[in] SaSessionList Pointer to list to be inserted in.\r | |
726 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION to be inserted.\r | |
727 | \r | |
728 | **/\r | |
729 | VOID\r | |
730 | Ikev2ChildSaSessionInsert (\r | |
731 | IN LIST_ENTRY *SaSessionList,\r | |
732 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
733 | )\r | |
734 | {\r | |
735 | InsertTailList (SaSessionList, &ChildSaSession->ByIkeSa);\r | |
736 | }\r | |
737 | \r | |
738 | /**\r | |
739 | Remove the IKEV2_CHILD_SA_SESSION from IkeSaSessionList.\r | |
740 | \r | |
741 | @param[in] SaSessionList The SA Session List to be iterated.\r | |
742 | @param[in] Spi Spi used to identified the IKEV2_CHILD_SA_SESSION.\r | |
743 | @param[in] ListType The type of the List to indicate whether it is a \r | |
744 | Established. \r | |
745 | \r | |
746 | @return The point to IKEV2_CHILD_SA_SESSION or NULL.\r | |
747 | \r | |
748 | **/\r | |
749 | IKEV2_CHILD_SA_SESSION *\r | |
750 | Ikev2ChildSaSessionRemove (\r | |
751 | IN LIST_ENTRY *SaSessionList,\r | |
752 | IN UINT32 Spi, \r | |
753 | IN UINT8 ListType\r | |
754 | )\r | |
755 | {\r | |
756 | LIST_ENTRY *Entry;\r | |
757 | LIST_ENTRY *NextEntry;\r | |
758 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
759 | \r | |
760 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, SaSessionList) {\r | |
761 | \r | |
762 | if (ListType == IKEV2_ESTABLISHED_CHILDSA_LIST || ListType == IKEV2_ESTABLISHING_CHILDSA_LIST) {\r | |
763 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
764 | } else if (ListType == IKEV2_DELET_CHILDSA_LIST) {\r | |
765 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_DEL_SA (Entry);\r | |
766 | } else {\r | |
767 | return NULL;\r | |
768 | }\r | |
769 | \r | |
770 | if (ChildSaSession->RemotePeerSpi == Spi || ChildSaSession->LocalPeerSpi == Spi) {\r | |
771 | RemoveEntryList (Entry);\r | |
772 | return ChildSaSession;\r | |
773 | }\r | |
774 | }\r | |
775 | \r | |
776 | return NULL;\r | |
777 | }\r | |
778 | \r | |
779 | /**\r | |
780 | Mark a specified Child SA Session as on deleting.\r | |
781 | \r | |
782 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION.\r | |
783 | \r | |
784 | @retval EFI_SUCCESS Operation is successful.\r | |
785 | \r | |
786 | **/\r | |
787 | EFI_STATUS\r | |
788 | Ikev2ChildSaSessionOnDeleting (\r | |
789 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
790 | )\r | |
791 | {\r | |
792 | return EFI_SUCCESS;\r | |
793 | }\r | |
794 | \r | |
795 | /**\r | |
796 | Free the memory located for the specified IKEV2_CHILD_SA_SESSION. \r | |
797 | \r | |
798 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION.\r | |
799 | \r | |
800 | **/\r | |
801 | VOID\r | |
802 | Ikev2ChildSaSessionFree (\r | |
803 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
804 | )\r | |
805 | {\r | |
806 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
807 | \r | |
808 | SessionCommon = &ChildSaSession->SessionCommon;\r | |
809 | if (ChildSaSession->SaData != NULL) {\r | |
810 | FreePool (ChildSaSession->SaData);\r | |
811 | }\r | |
812 | \r | |
813 | if (ChildSaSession->NiBlock != NULL) {\r | |
814 | FreePool (ChildSaSession->NiBlock);\r | |
815 | }\r | |
816 | \r | |
817 | if (ChildSaSession->NrBlock != NULL) {\r | |
818 | FreePool (ChildSaSession->NrBlock);\r | |
819 | }\r | |
820 | \r | |
821 | if (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.AuthKey != NULL) {\r | |
822 | FreePool (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.AuthKey);\r | |
823 | }\r | |
824 | \r | |
825 | if (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.EncKey != NULL) {\r | |
826 | FreePool (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.EncKey);\r | |
827 | }\r | |
828 | \r | |
829 | if (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.AuthKey != NULL) {\r | |
830 | FreePool (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.AuthKey);\r | |
831 | }\r | |
832 | \r | |
833 | if (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.EncKey != NULL) {\r | |
834 | FreePool (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.EncKey);\r | |
835 | }\r | |
836 | \r | |
837 | //\r | |
838 | // Delete DhBuffer\r | |
839 | //\r | |
840 | Ikev2DhBufferFree (ChildSaSession->DhBuffer);\r | |
841 | \r | |
842 | //\r | |
843 | // Delete SpdSelector\r | |
844 | //\r | |
845 | if (ChildSaSession->SpdSelector != NULL) {\r | |
846 | if (ChildSaSession->SpdSelector->LocalAddress != NULL) {\r | |
847 | FreePool (ChildSaSession->SpdSelector->LocalAddress);\r | |
848 | }\r | |
849 | if (ChildSaSession->SpdSelector->RemoteAddress != NULL) {\r | |
850 | FreePool (ChildSaSession->SpdSelector->RemoteAddress);\r | |
851 | }\r | |
852 | FreePool (ChildSaSession->SpdSelector);\r | |
853 | }\r | |
854 | Ikev2SaSessionCommonFree (SessionCommon);\r | |
855 | FreePool (ChildSaSession);\r | |
856 | \r | |
857 | return ;\r | |
858 | }\r | |
859 | \r | |
860 | /**\r | |
861 | Delete the specified established Child SA.\r | |
862 | \r | |
863 | This function delete the Child SA directly and don't send the Information Packet to\r | |
864 | remote peer.\r | |
865 | \r | |
866 | @param[in] IkeSaSession Pointer to a IKE SA Session used to be searched for.\r | |
867 | @param[in] Spi SPI used to find the Child SA.\r | |
868 | \r | |
869 | @retval EFI_NOT_FOUND Pointer of IKE SA Session is NULL.\r | |
870 | @retval EFI_NOT_FOUND There is no specified Child SA related with the input\r | |
871 | SPI under this IKE SA Session.\r | |
872 | @retval EFI_SUCCESS Delete the Child SA successfully.\r | |
873 | \r | |
874 | **/\r | |
875 | EFI_STATUS\r | |
876 | Ikev2ChildSaSilentDelete (\r | |
877 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
878 | IN UINT32 Spi\r | |
879 | )\r | |
880 | {\r | |
881 | EFI_STATUS Status;\r | |
882 | EFI_IPSEC_CONFIG_SELECTOR *Selector;\r | |
883 | UINTN SelectorSize;\r | |
884 | BOOLEAN IsLocalFound;\r | |
885 | BOOLEAN IsRemoteFound;\r | |
886 | UINT32 LocalSpi;\r | |
887 | UINT32 RemoteSpi;\r | |
888 | IKEV2_CHILD_SA_SESSION *ChildSession;\r | |
889 | EFI_IPSEC_CONFIG_SELECTOR *LocalSelector;\r | |
890 | EFI_IPSEC_CONFIG_SELECTOR *RemoteSelector;\r | |
9166f840 | 891 | IPSEC_PRIVATE_DATA *Private;\r |
892 | \r | |
893 | if (IkeSaSession == NULL) {\r | |
894 | return EFI_NOT_FOUND;\r | |
895 | }\r | |
896 | \r | |
897 | IsLocalFound = FALSE;\r | |
898 | IsRemoteFound = FALSE;\r | |
899 | ChildSession = NULL;\r | |
900 | LocalSelector = NULL;\r | |
901 | RemoteSelector = NULL;\r | |
9166f840 | 902 | \r |
5dd08a46 | 903 | Private = IkeSaSession->SessionCommon.Private;\r |
9166f840 | 904 | \r |
905 | //\r | |
906 | // Remove the Established SA from ChildSaEstablishlist.\r | |
907 | //\r | |
908 | ChildSession = Ikev2ChildSaSessionRemove(\r | |
909 | &(IkeSaSession->ChildSaEstablishSessionList),\r | |
910 | Spi, \r | |
911 | IKEV2_ESTABLISHED_CHILDSA_LIST\r | |
912 | );\r | |
913 | if (ChildSession == NULL) {\r | |
914 | return EFI_NOT_FOUND;\r | |
915 | }\r | |
916 | \r | |
917 | LocalSpi = ChildSession->LocalPeerSpi;\r | |
918 | RemoteSpi = ChildSession->RemotePeerSpi;\r | |
919 | \r | |
920 | SelectorSize = sizeof (EFI_IPSEC_CONFIG_SELECTOR);\r | |
921 | Selector = AllocateZeroPool (SelectorSize);\r | |
6b16c9e7 JW |
922 | if (Selector == NULL) {\r |
923 | return EFI_OUT_OF_RESOURCES;\r | |
924 | }\r | |
9166f840 | 925 | \r |
926 | while (1) {\r | |
927 | Status = EfiIpSecConfigGetNextSelector (\r | |
928 | &Private->IpSecConfig,\r | |
929 | IPsecConfigDataTypeSad,\r | |
930 | &SelectorSize,\r | |
931 | Selector\r | |
932 | );\r | |
933 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
934 | FreePool (Selector);\r | |
935 | \r | |
936 | Selector = AllocateZeroPool (SelectorSize);\r | |
6b16c9e7 JW |
937 | if (Selector == NULL) {\r |
938 | Status = EFI_OUT_OF_RESOURCES;\r | |
939 | break;\r | |
940 | }\r | |
941 | \r | |
9166f840 | 942 | Status = EfiIpSecConfigGetNextSelector (\r |
943 | &Private->IpSecConfig,\r | |
944 | IPsecConfigDataTypeSad,\r | |
945 | &SelectorSize,\r | |
946 | Selector\r | |
947 | );\r | |
948 | }\r | |
949 | \r | |
950 | if (EFI_ERROR (Status)) {\r | |
951 | break;\r | |
952 | }\r | |
953 | \r | |
954 | if (Selector->SaId.Spi == RemoteSpi) {\r | |
955 | //\r | |
956 | // SPI is unique. There is only one SAD whose SPI is\r | |
957 | // same with RemoteSpi.\r | |
958 | //\r | |
959 | IsRemoteFound = TRUE;\r | |
960 | RemoteSelector = AllocateZeroPool (SelectorSize);\r | |
6b16c9e7 JW |
961 | if (RemoteSelector == NULL) {\r |
962 | Status = EFI_OUT_OF_RESOURCES;\r | |
963 | break;\r | |
964 | }\r | |
965 | \r | |
9166f840 | 966 | CopyMem (RemoteSelector, Selector, SelectorSize);\r |
967 | }\r | |
968 | \r | |
969 | if (Selector->SaId.Spi == LocalSpi) {\r | |
970 | //\r | |
971 | // SPI is unique. There is only one SAD whose SPI is\r | |
972 | // same with LocalSpi.\r | |
973 | //\r | |
974 | IsLocalFound = TRUE;\r | |
975 | LocalSelector = AllocateZeroPool (SelectorSize);\r | |
6b16c9e7 JW |
976 | if (LocalSelector == NULL) {\r |
977 | Status = EFI_OUT_OF_RESOURCES;\r | |
978 | break;\r | |
979 | }\r | |
980 | \r | |
9166f840 | 981 | CopyMem (LocalSelector, Selector, SelectorSize);\r |
982 | }\r | |
983 | }\r | |
984 | //\r | |
985 | // Delete SA from the Variable.\r | |
986 | //\r | |
987 | if (IsLocalFound) {\r | |
988 | Status = EfiIpSecConfigSetData (\r | |
989 | &Private->IpSecConfig,\r | |
990 | IPsecConfigDataTypeSad,\r | |
991 | LocalSelector,\r | |
992 | NULL,\r | |
993 | NULL\r | |
994 | );\r | |
995 | }\r | |
996 | \r | |
997 | if (IsRemoteFound) {\r | |
998 | Status = EfiIpSecConfigSetData (\r | |
999 | &Private->IpSecConfig,\r | |
1000 | IPsecConfigDataTypeSad,\r | |
1001 | RemoteSelector,\r | |
1002 | NULL,\r | |
1003 | NULL\r | |
1004 | );\r | |
1005 | \r | |
1006 | }\r | |
1007 | \r | |
1008 | DEBUG (\r | |
1009 | (DEBUG_INFO,\r | |
1010 | "\n------IKEV2 deleted ChildSa(local spi, remote spi):(0x%x, 0x%x)------\n",\r | |
1011 | LocalSpi,\r | |
1012 | RemoteSpi)\r | |
1013 | );\r | |
1014 | Ikev2ChildSaSessionFree (ChildSession);\r | |
1015 | \r | |
1016 | if (RemoteSelector != NULL) {\r | |
1017 | FreePool (RemoteSelector);\r | |
1018 | }\r | |
1019 | \r | |
1020 | if (LocalSelector != NULL) {\r | |
1021 | FreePool (LocalSelector);\r | |
1022 | }\r | |
1023 | \r | |
1024 | if (Selector != NULL) {\r | |
1025 | FreePool (Selector);\r | |
1026 | }\r | |
1027 | \r | |
1028 | return Status;\r | |
1029 | }\r | |
1030 | \r | |
1031 | /**\r | |
1032 | Free the specified DhBuffer.\r | |
1033 | \r | |
1034 | @param[in] DhBuffer Pointer to IKEV2_DH_BUFFER to be freed.\r | |
1035 | \r | |
1036 | **/\r | |
1037 | VOID\r | |
1038 | Ikev2DhBufferFree (\r | |
1039 | IKEV2_DH_BUFFER *DhBuffer\r | |
1040 | ) \r | |
1041 | {\r | |
1042 | if (DhBuffer != NULL) {\r | |
1043 | if (DhBuffer->GxBuffer != NULL) {\r | |
1044 | FreePool (DhBuffer->GxBuffer);\r | |
1045 | }\r | |
1046 | if (DhBuffer->GyBuffer != NULL) {\r | |
1047 | FreePool (DhBuffer->GyBuffer);\r | |
1048 | }\r | |
1049 | if (DhBuffer->GxyBuffer != NULL) {\r | |
1050 | FreePool (DhBuffer->GxyBuffer);\r | |
1051 | }\r | |
1052 | if (DhBuffer->DhContext != NULL) {\r | |
1053 | IpSecCryptoIoFreeDh (&DhBuffer->DhContext);\r | |
1054 | }\r | |
1055 | FreePool (DhBuffer);\r | |
1056 | }\r | |
1057 | }\r | |
1058 | \r | |
1059 | /**\r | |
1060 | This function is to parse a request IKE packet and return its request type.\r | |
1061 | The request type is one of IKE CHILD SA creation, IKE SA rekeying and \r | |
1062 | IKE CHILD SA rekeying.\r | |
1063 | \r | |
1064 | @param[in] IkePacket IKE packet to be prased.\r | |
1065 | \r | |
1066 | return the type of the IKE packet.\r | |
1067 | \r | |
1068 | **/\r | |
1069 | IKEV2_CREATE_CHILD_REQUEST_TYPE\r | |
1070 | Ikev2ChildExchangeRequestType(\r | |
1071 | IN IKE_PACKET *IkePacket\r | |
1072 | )\r | |
1073 | {\r | |
1074 | BOOLEAN Flag;\r | |
1075 | LIST_ENTRY *Entry;\r | |
1076 | IKE_PAYLOAD *IkePayload;\r | |
1077 | \r | |
1078 | Flag = FALSE;\r | |
1079 | \r | |
1080 | NET_LIST_FOR_EACH (Entry, &(IkePacket)->PayloadList) {\r | |
1081 | IkePayload = IKE_PAYLOAD_BY_PACKET (Entry);\r | |
1082 | if (IkePayload->PayloadType == IKEV2_PAYLOAD_TYPE_TS_INIT) {\r | |
1083 | //\r | |
1084 | // Packet with Ts Payload means it is for either CHILD_SA_CREATE or CHILD_SA_REKEY.\r | |
1085 | //\r | |
1086 | Flag = TRUE;\r | |
1087 | }\r | |
1088 | if (IkePayload->PayloadType == IKEV2_PAYLOAD_TYPE_NOTIFY) { \r | |
1089 | if (((IKEV2_NOTIFY*)IkePayload)->MessageType == IKEV2_NOTIFICATION_REKEY_SA) {\r | |
1090 | //\r | |
1091 | // If notify payload with REKEY_SA message type, the IkePacket is for \r | |
1092 | // rekeying Child SA.\r | |
1093 | //\r | |
1094 | return IkeRequestTypeRekeyChildSa;\r | |
1095 | }\r | |
1096 | }\r | |
1097 | };\r | |
1098 | \r | |
1099 | if (!Flag){\r | |
1100 | //\r | |
1101 | // The Create Child Exchange is for IKE SA rekeying.\r | |
1102 | //\r | |
1103 | return IkeRequestTypeRekeyIkeSa;\r | |
1104 | } else {\r | |
1105 | //\r | |
1106 | // If the Notify payloaad with transport mode message type, the IkePacket is \r | |
1107 | // for create Child SA.\r | |
1108 | //\r | |
1109 | return IkeRequestTypeCreateChildSa;\r | |
1110 | }\r | |
1111 | }\r | |
1112 | \r | |
1113 | /**\r | |
1114 | Associate a SPD selector to the Child SA Session.\r | |
1115 | \r | |
1116 | This function is called when the Child SA is not the first child SA of its \r | |
1117 | IKE SA. It associate a SPD to this Child SA.\r | |
1118 | \r | |
1119 | @param[in, out] ChildSaSession Pointer to the Child SA Session to be associated to \r | |
1120 | a SPD selector.\r | |
1121 | \r | |
1122 | @retval EFI_SUCCESS Associate one SPD selector to this Child SA Session successfully.\r | |
1123 | @retval EFI_NOT_FOUND Can't find the related SPD selector.\r | |
1124 | \r | |
1125 | **/\r | |
1126 | EFI_STATUS\r | |
1127 | Ikev2ChildSaAssociateSpdEntry (\r | |
1128 | IN OUT IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
1129 | )\r | |
1130 | {\r | |
1131 | IpSecVisitConfigData (IPsecConfigDataTypeSpd, Ikev2MatchSpdEntry, ChildSaSession);\r | |
1132 | if (ChildSaSession->Spd != NULL) {\r | |
1133 | return EFI_SUCCESS;\r | |
1134 | } else {\r | |
1135 | return EFI_NOT_FOUND;\r | |
1136 | }\r | |
1137 | }\r | |
1138 | \r | |
1139 | \r | |
1140 | /**\r | |
1141 | This function finds the SPI from Create Child SA Exchange Packet.\r | |
1142 | \r | |
1143 | @param[in] IkePacket Pointer to IKE_PACKET to be searched.\r | |
1144 | \r | |
1145 | @retval SPI number or 0 if it is not supported.\r | |
1146 | \r | |
1147 | **/\r | |
1148 | UINT32\r | |
1149 | Ikev2ChildExchangeRekeySpi (\r | |
1150 | IN IKE_PACKET *IkePacket\r | |
1151 | )\r | |
1152 | {\r | |
1153 | //\r | |
1154 | // Not support yet.\r | |
1155 | // \r | |
1156 | return 0;\r | |
1157 | }\r | |
1158 | \r | |
1159 | /**\r | |
1160 | Validate the IKE header of received IKE packet.\r | |
1161 | \r | |
1162 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION related to this IKE packet.\r | |
1163 | @param[in] IkeHdr Pointer to IKE header of received IKE packet.\r | |
1164 | \r | |
1165 | @retval TRUE If the IKE header is valid.\r | |
1166 | @retval FALSE If the IKE header is invalid.\r | |
1167 | \r | |
1168 | **/\r | |
1169 | BOOLEAN\r | |
1170 | Ikev2ValidateHeader (\r | |
1171 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
1172 | IN IKE_HEADER *IkeHdr\r | |
1173 | )\r | |
1174 | {\r | |
1175 | \r | |
1176 | IKEV2_SESSION_STATE State;\r | |
1177 | \r | |
1178 | State = IkeSaSession->SessionCommon.State;\r | |
1179 | if (State == IkeStateInit) {\r | |
1180 | //\r | |
1181 | // For the IKE Initial Exchange, the MessagId should be zero.\r | |
1182 | //\r | |
1183 | if (IkeHdr->MessageId != 0) {\r | |
1184 | return FALSE;\r | |
1185 | }\r | |
1186 | } else {\r | |
1187 | if (State == IkeStateAuth) {\r | |
1188 | if (IkeHdr->MessageId != 1) {\r | |
1189 | return FALSE;\r | |
1190 | }\r | |
1191 | }\r | |
1192 | if (IkeHdr->InitiatorCookie != IkeSaSession->InitiatorCookie ||\r | |
1193 | IkeHdr->ResponderCookie != IkeSaSession->ResponderCookie\r | |
1194 | ) {\r | |
1195 | //\r | |
1196 | // TODO: send notification INVALID-COOKIE\r | |
1197 | //\r | |
1198 | return FALSE;\r | |
1199 | }\r | |
1200 | }\r | |
1201 | \r | |
1202 | //\r | |
1203 | // Information Exchagne and Create Child Exchange can be started from each part.\r | |
1204 | //\r | |
1205 | if (IkeHdr->ExchangeType != IKEV2_EXCHANGE_TYPE_INFO && \r | |
1206 | IkeHdr->ExchangeType != IKEV2_EXCHANGE_TYPE_CREATE_CHILD\r | |
1207 | ) {\r | |
1208 | if (IkeSaSession->SessionCommon.IsInitiator) {\r | |
1209 | if (IkeHdr->InitiatorCookie != IkeSaSession->InitiatorCookie) {\r | |
1210 | //\r | |
1211 | // TODO: send notification INVALID-COOKIE\r | |
1212 | //\r | |
1213 | return FALSE;\r | |
1214 | }\r | |
1215 | if (IkeHdr->Flags != IKE_HEADER_FLAGS_RESPOND) {\r | |
1216 | return FALSE;\r | |
1217 | }\r | |
1218 | } else {\r | |
1219 | if (IkeHdr->Flags != IKE_HEADER_FLAGS_INIT) {\r | |
1220 | return FALSE;\r | |
1221 | }\r | |
1222 | }\r | |
1223 | }\r | |
1224 | \r | |
1225 | return TRUE;\r | |
1226 | }\r | |
1227 | \r | |
1228 | /**\r | |
1229 | Create and intialize IKEV2_SA_DATA for speicifed IKEV2_SESSION_COMMON.\r | |
1230 | \r | |
1231 | This function will be only called by the initiator. The responder's IKEV2_SA_DATA\r | |
1232 | will be generated during parsed the initiator packet.\r | |
1233 | \r | |
1234 | @param[in] SessionCommon Pointer to IKEV2_SESSION_COMMON related to.\r | |
1235 | \r | |
1236 | @retval a Pointer to a new IKEV2_SA_DATA or NULL.\r | |
1237 | \r | |
1238 | **/\r | |
1239 | IKEV2_SA_DATA *\r | |
1240 | Ikev2InitializeSaData (\r | |
1241 | IN IKEV2_SESSION_COMMON *SessionCommon\r | |
1242 | )\r | |
1243 | {\r | |
1244 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1245 | IKEV2_SA_DATA *SaData;\r | |
1246 | IKEV2_PROPOSAL_DATA *ProposalData;\r | |
1247 | IKEV2_TRANSFORM_DATA *TransformData;\r | |
1248 | IKE_SA_ATTRIBUTE *Attribute;\r | |
1249 | \r | |
1250 | ASSERT (SessionCommon != NULL);\r | |
1251 | //\r | |
1252 | // TODO: Remove the hard code of the support Alogrithm. Those data should be\r | |
1253 | // get from the SPD/PAD data.\r | |
1254 | //\r | |
1255 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1256 | SaData = AllocateZeroPool (\r | |
1257 | sizeof (IKEV2_SA_DATA) +\r | |
1258 | sizeof (IKEV2_PROPOSAL_DATA) * 2 +\r | |
1259 | sizeof (IKEV2_TRANSFORM_DATA) * 4 * 2\r | |
1260 | );\r | |
1261 | } else {\r | |
1262 | SaData = AllocateZeroPool (\r | |
1263 | sizeof (IKEV2_SA_DATA) +\r | |
1264 | sizeof (IKEV2_PROPOSAL_DATA) * 2 +\r | |
1265 | sizeof (IKEV2_TRANSFORM_DATA) * 3 * 2\r | |
1266 | );\r | |
1267 | }\r | |
1268 | if (SaData == NULL) {\r | |
1269 | return NULL;\r | |
1270 | }\r | |
1271 | \r | |
1272 | //\r | |
1273 | // First proposal payload: 3DES + SHA1 + DH\r | |
1274 | //\r | |
1275 | SaData->NumProposals = 2;\r | |
1276 | ProposalData = (IKEV2_PROPOSAL_DATA *) (SaData + 1);\r | |
1277 | ProposalData->ProposalIndex = 1;\r | |
1278 | \r | |
1279 | //\r | |
1280 | // If SA data for IKE_SA_INIT exchage, contains 4 transforms. If SA data for \r | |
1281 | // IKE_AUTH exchange contains 3 transforms.\r | |
1282 | //\r | |
1283 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1284 | ProposalData->NumTransforms = 4;\r | |
1285 | } else {\r | |
1286 | ProposalData->NumTransforms = 3;\r | |
1287 | }\r | |
1288 | \r | |
1289 | \r | |
1290 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1291 | ProposalData->ProtocolId = IPSEC_PROTO_ISAKMP;\r | |
1292 | } else {\r | |
1293 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1294 | ProposalData->ProtocolId = IPSEC_PROTO_IPSEC_ESP;\r | |
1295 | ProposalData->Spi = AllocateZeroPool (sizeof (ChildSaSession->LocalPeerSpi));\r | |
6b16c9e7 JW |
1296 | if (ProposalData->Spi == NULL) {\r |
1297 | FreePool (SaData);\r | |
1298 | return NULL;\r | |
1299 | }\r | |
1300 | \r | |
9166f840 | 1301 | CopyMem (\r |
1302 | ProposalData->Spi,\r | |
1303 | &ChildSaSession->LocalPeerSpi,\r | |
1304 | sizeof(ChildSaSession->LocalPeerSpi)\r | |
1305 | );\r | |
1306 | }\r | |
1307 | \r | |
1308 | //\r | |
1309 | // Set transform attribute for Encryption Algorithm - 3DES\r | |
1310 | //\r | |
1311 | TransformData = (IKEV2_TRANSFORM_DATA *) (ProposalData + 1);\r | |
1312 | TransformData->TransformIndex = 0;\r | |
1313 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_ENCR;\r | |
1314 | TransformData->TransformId = IKEV2_TRANSFORM_ID_ENCR_3DES;\r | |
1315 | \r | |
1316 | //\r | |
1317 | // Set transform attribute for Integrity Algorithm - SHA1_96\r | |
1318 | //\r | |
1319 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1320 | TransformData->TransformIndex = 1;\r | |
1321 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_INTEG;\r | |
1322 | TransformData->TransformId = IKEV2_TRANSFORM_ID_AUTH_HMAC_SHA1_96;\r | |
1323 | \r | |
1324 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1325 | //\r | |
1326 | // Set transform attribute for Pseduo-Random Function - HAMC_SHA1\r | |
1327 | //\r | |
1328 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1329 | TransformData->TransformIndex = 2;\r | |
1330 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_PRF;\r | |
1331 | TransformData->TransformId = IKEV2_TRANSFORM_ID_PRF_HMAC_SHA1;\r | |
1332 | }\r | |
1333 | \r | |
1334 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1335 | //\r | |
1336 | // Set transform attribute for DH Group - DH 1024\r | |
1337 | //\r | |
1338 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1339 | TransformData->TransformIndex = 3;\r | |
1340 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_DH;\r | |
1341 | TransformData->TransformId = IKEV2_TRANSFORM_ID_DH_1024MODP;\r | |
1342 | } else {\r | |
1343 | //\r | |
1344 | // Transform type for Extended Sequence Numbers. Currently not support Extended\r | |
1345 | // Sequence Number.\r | |
1346 | //\r | |
1347 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1348 | TransformData->TransformIndex = 2;\r | |
1349 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_ESN;\r | |
1350 | TransformData->TransformId = 0;\r | |
1351 | }\r | |
1352 | \r | |
1353 | //\r | |
1354 | // Second proposal payload: 3DES + SHA1 + DH\r | |
1355 | //\r | |
1356 | ProposalData = (IKEV2_PROPOSAL_DATA *) (TransformData + 1);\r | |
1357 | ProposalData->ProposalIndex = 2;\r | |
1358 | \r | |
1359 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1360 | ProposalData->ProtocolId = IPSEC_PROTO_ISAKMP;\r | |
1361 | ProposalData->NumTransforms = 4;\r | |
1362 | } else {\r | |
1363 | \r | |
1364 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1365 | ProposalData->ProtocolId = IPSEC_PROTO_IPSEC_ESP;\r | |
1366 | ProposalData->NumTransforms = 3;\r | |
1367 | ProposalData->Spi = AllocateZeroPool (sizeof (ChildSaSession->LocalPeerSpi));\r | |
6b16c9e7 JW |
1368 | if (ProposalData->Spi == NULL) {\r |
1369 | FreePool (((IKEV2_PROPOSAL_DATA *) (SaData + 1))->Spi);\r | |
1370 | FreePool (SaData);\r | |
1371 | return NULL;\r | |
1372 | }\r | |
1373 | \r | |
9166f840 | 1374 | CopyMem (\r |
1375 | ProposalData->Spi,\r | |
1376 | &ChildSaSession->LocalPeerSpi,\r | |
1377 | sizeof(ChildSaSession->LocalPeerSpi)\r | |
1378 | );\r | |
1379 | }\r | |
1380 | \r | |
1381 | //\r | |
1382 | // Set transform attribute for Encryption Algorithm - AES-CBC\r | |
1383 | //\r | |
1384 | TransformData = (IKEV2_TRANSFORM_DATA *) (ProposalData + 1);\r | |
1385 | TransformData->TransformIndex = 0;\r | |
1386 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_ENCR;\r | |
1387 | TransformData->TransformId = IKEV2_TRANSFORM_ID_ENCR_AES_CBC;\r | |
1388 | Attribute = &TransformData->Attribute;\r | |
1389 | Attribute->AttrType = IKEV2_ATTRIBUTE_TYPE_KEYLEN;\r | |
1390 | Attribute->Attr.AttrLength = (UINT16) (8 * IpSecGetEncryptKeyLength (IKEV2_TRANSFORM_ID_ENCR_AES_CBC));\r | |
1391 | \r | |
1392 | //\r | |
1393 | // Set transform attribute for Integrity Algorithm - SHA1_96\r | |
1394 | //\r | |
1395 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1396 | TransformData->TransformIndex = 1;\r | |
1397 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_INTEG;\r | |
1398 | TransformData->TransformId = IKEV2_TRANSFORM_ID_AUTH_HMAC_SHA1_96;\r | |
1399 | \r | |
1400 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1401 | //\r | |
1402 | // Set transform attribute for Pseduo-Random Function - HAMC_SHA1\r | |
1403 | //\r | |
1404 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1405 | TransformData->TransformIndex = 2;\r | |
1406 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_PRF;\r | |
1407 | TransformData->TransformId = IKEV2_TRANSFORM_ID_PRF_HMAC_SHA1;\r | |
1408 | }\r | |
1409 | \r | |
1410 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1411 | //\r | |
1412 | // Set transform attrbiute for DH Group - DH-1024\r | |
1413 | //\r | |
1414 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1415 | TransformData->TransformIndex = 3;\r | |
1416 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_DH;\r | |
1417 | TransformData->TransformId = IKEV2_TRANSFORM_ID_DH_1024MODP;\r | |
1418 | } else {\r | |
1419 | //\r | |
1420 | // Transform type for Extended Sequence Numbers. Currently not support Extended\r | |
1421 | // Sequence Number.\r | |
1422 | //\r | |
1423 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1424 | TransformData->TransformIndex = 2;\r | |
1425 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_ESN;\r | |
1426 | TransformData->TransformId = 0;\r | |
1427 | }\r | |
1428 | \r | |
1429 | return SaData;\r | |
1430 | }\r | |
1431 | \r | |
1432 | /**\r | |
1433 | Store the SA into SAD.\r | |
1434 | \r | |
1435 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION.\r | |
1436 | \r | |
1437 | **/\r | |
1438 | VOID\r | |
1439 | Ikev2StoreSaData (\r | |
1440 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
1441 | )\r | |
1442 | {\r | |
1443 | EFI_STATUS Status;\r | |
1444 | EFI_IPSEC_SA_ID SaId;\r | |
1445 | EFI_IPSEC_SA_DATA2 SaData;\r | |
1446 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
1447 | IPSEC_PRIVATE_DATA *Private;\r | |
1448 | UINT32 TempAddressCount;\r | |
1449 | EFI_IP_ADDRESS_INFO *TempAddressInfo;\r | |
1450 | \r | |
1451 | SessionCommon = &ChildSaSession->SessionCommon;\r | |
1452 | Private = SessionCommon->Private;\r | |
1453 | \r | |
1454 | ZeroMem (&SaId, sizeof (EFI_IPSEC_SA_ID));\r | |
1455 | ZeroMem (&SaData, sizeof (EFI_IPSEC_SA_DATA2));\r | |
1456 | \r | |
1457 | //\r | |
1458 | // Create a SpdSelector. In this implementation, one SPD represents\r | |
1459 | // 2 direction traffic, so in here, there needs to reverse the local address \r | |
1460 | // and remote address for Remote Peer's SA, then reverse again for the locate\r | |
1461 | // SA. \r | |
1462 | //\r | |
1463 | TempAddressCount = ChildSaSession->SpdSelector->LocalAddressCount;\r | |
1464 | TempAddressInfo = ChildSaSession->SpdSelector->LocalAddress;\r | |
1465 | \r | |
1466 | ChildSaSession->SpdSelector->LocalAddressCount = ChildSaSession->SpdSelector->RemoteAddressCount;\r | |
1467 | ChildSaSession->SpdSelector->LocalAddress = ChildSaSession->SpdSelector->RemoteAddress;\r | |
1468 | \r | |
1469 | ChildSaSession->SpdSelector->RemoteAddress = TempAddressInfo;\r | |
1470 | ChildSaSession->SpdSelector->RemoteAddressCount= TempAddressCount;\r | |
1471 | \r | |
1472 | //\r | |
1473 | // Set the SaId and SaData.\r | |
1474 | //\r | |
1475 | SaId.Spi = ChildSaSession->LocalPeerSpi;\r | |
1476 | SaId.Proto = EfiIPsecESP;\r | |
1477 | SaData.AntiReplayWindows = 16;\r | |
1478 | SaData.SNCount = 0;\r | |
1479 | SaData.Mode = ChildSaSession->Spd->Data->ProcessingPolicy->Mode;\r | |
1480 | \r | |
1481 | //\r | |
1482 | // If it is tunnel mode, should add the TunnelDest and TunnelSource for SaData.\r | |
1483 | //\r | |
1484 | if (SaData.Mode == EfiIPsecTunnel) {\r | |
1485 | CopyMem (\r | |
1486 | &SaData.TunnelSourceAddress, \r | |
1487 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->RemoteTunnelAddress,\r | |
1488 | sizeof (EFI_IP_ADDRESS)\r | |
1489 | );\r | |
1490 | CopyMem (\r | |
1491 | &SaData.TunnelDestinationAddress,\r | |
1492 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->LocalTunnelAddress,\r | |
1493 | sizeof (EFI_IP_ADDRESS)\r | |
1494 | );\r | |
1495 | }\r | |
1496 | \r | |
1497 | CopyMem (&SaId.DestAddress, &ChildSaSession->SessionCommon.LocalPeerIp, sizeof (EFI_IP_ADDRESS));\r | |
1498 | CopyMem (&SaData.AlgoInfo, &ChildSaSession->ChildKeymats.LocalPeerInfo, sizeof (EFI_IPSEC_ALGO_INFO));\r | |
1499 | SaData.SpdSelector = ChildSaSession->SpdSelector;\r | |
1500 | \r | |
1501 | //\r | |
1502 | // Store the remote SA into SAD.\r | |
1503 | //\r | |
1504 | Status = EfiIpSecConfigSetData (\r | |
1505 | &Private->IpSecConfig,\r | |
1506 | IPsecConfigDataTypeSad,\r | |
1507 | (EFI_IPSEC_CONFIG_SELECTOR *) &SaId,\r | |
1508 | &SaData,\r | |
1509 | NULL\r | |
1510 | );\r | |
1511 | ASSERT_EFI_ERROR (Status);\r | |
1512 | \r | |
1513 | //\r | |
1514 | // Store the local SA into SAD.\r | |
1515 | // \r | |
1516 | ChildSaSession->SpdSelector->RemoteAddressCount = ChildSaSession->SpdSelector->LocalAddressCount;\r | |
1517 | ChildSaSession->SpdSelector->RemoteAddress = ChildSaSession->SpdSelector->LocalAddress;\r | |
1518 | \r | |
1519 | ChildSaSession->SpdSelector->LocalAddress = TempAddressInfo;\r | |
1520 | ChildSaSession->SpdSelector->LocalAddressCount = TempAddressCount;\r | |
1521 | \r | |
1522 | SaId.Spi = ChildSaSession->RemotePeerSpi;\r | |
1523 | \r | |
1524 | CopyMem (&SaId.DestAddress, &ChildSaSession->SessionCommon.RemotePeerIp, sizeof (EFI_IP_ADDRESS));\r | |
1525 | CopyMem (&SaData.AlgoInfo, &ChildSaSession->ChildKeymats.RemotePeerInfo, sizeof (EFI_IPSEC_ALGO_INFO));\r | |
1526 | SaData.SpdSelector = ChildSaSession->SpdSelector;\r | |
1527 | \r | |
1528 | //\r | |
1529 | // If it is tunnel mode, should add the TunnelDest and TunnelSource for SaData.\r | |
1530 | //\r | |
1531 | if (SaData.Mode == EfiIPsecTunnel) {\r | |
1532 | CopyMem (\r | |
1533 | &SaData.TunnelSourceAddress,\r | |
1534 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->LocalTunnelAddress,\r | |
1535 | sizeof (EFI_IP_ADDRESS)\r | |
1536 | );\r | |
1537 | CopyMem (\r | |
1538 | &SaData.TunnelDestinationAddress,\r | |
1539 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->RemoteTunnelAddress,\r | |
1540 | sizeof (EFI_IP_ADDRESS)\r | |
1541 | );\r | |
1542 | }\r | |
1543 | \r | |
1544 | Status = EfiIpSecConfigSetData (\r | |
1545 | &Private->IpSecConfig,\r | |
1546 | IPsecConfigDataTypeSad,\r | |
1547 | (EFI_IPSEC_CONFIG_SELECTOR *) &SaId,\r | |
1548 | &SaData,\r | |
1549 | NULL\r | |
1550 | );\r | |
1551 | \r | |
1552 | ASSERT_EFI_ERROR (Status);\r | |
1553 | }\r | |
1554 | \r | |
1555 | /**\r | |
1556 | Call back function of the IKE life time is over.\r | |
1557 | \r | |
1558 | This function will mark the related IKE SA Session as deleting and trigger a \r | |
1559 | Information negotiation.\r | |
1560 | \r | |
1561 | @param[in] Event The signaled Event.\r | |
1562 | @param[in] Context Pointer to data passed by caller.\r | |
1563 | \r | |
1564 | **/\r | |
1565 | VOID\r | |
1566 | EFIAPI\r | |
1567 | Ikev2LifetimeNotify (\r | |
1568 | IN EFI_EVENT Event,\r | |
1569 | IN VOID *Context\r | |
1570 | )\r | |
1571 | {\r | |
1572 | IKEV2_SA_SESSION *IkeSaSession;\r | |
1573 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1574 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
1575 | \r | |
1576 | ASSERT (Context != NULL);\r | |
1577 | SessionCommon = (IKEV2_SESSION_COMMON *) Context;\r | |
1578 | \r | |
1579 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1580 | IkeSaSession = IKEV2_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1581 | DEBUG ((\r | |
1582 | DEBUG_INFO,\r | |
1583 | "\n---IkeSa Lifetime is out(cookie_i, cookie_r):(0x%lx, 0x%lx)---\n",\r | |
1584 | IkeSaSession->InitiatorCookie,\r | |
1585 | IkeSaSession->ResponderCookie\r | |
1586 | ));\r | |
1587 | \r | |
1588 | //\r | |
1589 | // Change the IKE SA Session's State to IKE_STATE_SA_DELETING.\r | |
1590 | //\r | |
1591 | IKEV2_DUMP_STATE (IkeSaSession->SessionCommon.State, IkeStateSaDeleting);\r | |
1592 | IkeSaSession->SessionCommon.State = IkeStateSaDeleting;\r | |
1593 | \r | |
1594 | } else {\r | |
1595 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1596 | IkeSaSession = ChildSaSession->IkeSaSession;\r | |
1597 | \r | |
1598 | //\r | |
1599 | // Link the timeout child SA to the DeleteSaList.\r | |
1600 | //\r | |
1601 | InsertTailList (&IkeSaSession->DeleteSaList, &ChildSaSession->ByDelete);\r | |
1602 | \r | |
1603 | //\r | |
1604 | // Change the Child SA Session's State to IKE_STATE_SA_DELETING.\r | |
1605 | // \r | |
1606 | DEBUG ((\r | |
1607 | DEBUG_INFO,\r | |
1608 | "\n------ChildSa Lifetime is out(SPI):(0x%x)------\n",\r | |
1609 | ChildSaSession->LocalPeerSpi\r | |
1610 | ));\r | |
1611 | }\r | |
1612 | \r | |
1613 | //\r | |
1614 | // TODO: Send the delete info packet or delete silently\r | |
1615 | //\r | |
1616 | mIkev2Exchange.NegotiateInfo ((UINT8 *) IkeSaSession, NULL);\r | |
1617 | }\r | |
1618 | \r | |
1619 | /**\r | |
1620 | This function will be called if the TimeOut Event is signaled.\r | |
1621 | \r | |
1622 | @param[in] Event The signaled Event.\r | |
1623 | @param[in] Context The data passed by caller.\r | |
1624 | \r | |
1625 | **/\r | |
1626 | VOID\r | |
1627 | EFIAPI\r | |
1628 | Ikev2ResendNotify (\r | |
1629 | IN EFI_EVENT Event,\r | |
1630 | IN VOID *Context\r | |
1631 | )\r | |
1632 | {\r | |
1633 | IPSEC_PRIVATE_DATA *Private;\r | |
1634 | IKEV2_SA_SESSION *IkeSaSession;\r | |
1635 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1636 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
1637 | LIST_ENTRY *ChildSaEntry;\r | |
1638 | UINT8 Value;\r | |
1639 | EFI_STATUS Status;\r | |
1640 | \r | |
1641 | ASSERT (Context != NULL); \r | |
1642 | IkeSaSession = NULL;\r | |
1643 | ChildSaSession = NULL;\r | |
1644 | SessionCommon = (IKEV2_SESSION_COMMON *) Context;\r | |
1645 | Private = SessionCommon->Private;\r | |
1646 | \r | |
1647 | //\r | |
1648 | // Remove the SA session from the processing list if exceed the max retry.\r | |
1649 | //\r | |
1650 | if (SessionCommon->RetryCount > IKE_MAX_RETRY) {\r | |
1651 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1652 | IkeSaSession = IKEV2_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1653 | if (IkeSaSession->SessionCommon.State == IkeStateSaDeleting) {\r | |
1654 | \r | |
1655 | //\r | |
1656 | // If the IkeSaSession is initiator, delete all its Child SAs before removing IKE SA.\r | |
1657 | // If the IkesaSession is responder, all ChildSa has been remove in Ikev2HandleInfo();\r | |
1658 | //\r | |
1659 | for (ChildSaEntry = IkeSaSession->ChildSaEstablishSessionList.ForwardLink;\r | |
1660 | ChildSaEntry != &IkeSaSession->ChildSaEstablishSessionList;\r | |
1661 | ) {\r | |
1662 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (ChildSaEntry);\r | |
1663 | //\r | |
1664 | // Move to next ChildSa Entry.\r | |
1665 | //\r | |
1666 | ChildSaEntry = ChildSaEntry->ForwardLink;\r | |
1667 | //\r | |
1668 | // Delete LocalSpi & RemoteSpi and remove the ChildSaSession from the\r | |
1669 | // EstablishedChildSaList.\r | |
1670 | //\r | |
1671 | Ikev2ChildSaSilentDelete (IkeSaSession, ChildSaSession->LocalPeerSpi);\r | |
1672 | }\r | |
1673 | \r | |
1674 | //\r | |
1675 | // If the IKE SA Delete Payload wasn't sent out successfully, Delete it from the EstablishedList.\r | |
1676 | //\r | |
1677 | Ikev2SaSessionRemove (&Private->Ikev2EstablishedList, &SessionCommon->RemotePeerIp);\r | |
1678 | \r | |
1679 | if (Private != NULL && Private->IsIPsecDisabling) {\r | |
1680 | //\r | |
1681 | // After all IKE SAs were deleted, set the IPSEC_STATUS_DISABLED value in\r | |
1682 | // IPsec status variable.\r | |
1683 | //\r | |
1684 | if (IsListEmpty (&Private->Ikev1EstablishedList) && IsListEmpty (&Private->Ikev2EstablishedList)) {\r | |
1685 | Value = IPSEC_STATUS_DISABLED;\r | |
1686 | Status = gRT->SetVariable (\r | |
1687 | IPSECCONFIG_STATUS_NAME,\r | |
1688 | &gEfiIpSecConfigProtocolGuid,\r | |
1689 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
1690 | sizeof (Value),\r | |
1691 | &Value\r | |
1692 | );\r | |
1693 | if (!EFI_ERROR (Status)) {\r | |
1694 | //\r | |
1695 | // Set the Disabled Flag in Private data.\r | |
1696 | //\r | |
1697 | Private->IpSec.DisabledFlag = TRUE;\r | |
1698 | Private->IsIPsecDisabling = FALSE;\r | |
1699 | }\r | |
1700 | }\r | |
1701 | }\r | |
1702 | } else {\r | |
1703 | Ikev2SaSessionRemove (&Private->Ikev2SessionList, &SessionCommon->RemotePeerIp);\r | |
1704 | }\r | |
1705 | Ikev2SaSessionFree (IkeSaSession);\r | |
1706 | \r | |
1707 | } else {\r | |
1708 | \r | |
1709 | //\r | |
1710 | // If the packet sent by Child SA.\r | |
1711 | //\r | |
1712 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1713 | IkeSaSession = ChildSaSession->IkeSaSession;\r | |
1714 | if (ChildSaSession->SessionCommon.State == IkeStateSaDeleting) {\r | |
1715 | \r | |
1716 | //\r | |
1717 | // Established Child SA should be remove from the SAD entry and \r | |
1718 | // DeleteList. The function of Ikev2DeleteChildSaSilent() will remove \r | |
1719 | // the childSA from the IkeSaSession->ChildSaEstablishedList. So there \r | |
1720 | // is no need to remove it here.\r | |
1721 | //\r | |
1722 | Ikev2ChildSaSilentDelete (IkeSaSession, ChildSaSession->LocalPeerSpi);\r | |
1723 | Ikev2ChildSaSessionRemove (\r | |
1724 | &IkeSaSession->DeleteSaList,\r | |
1725 | ChildSaSession->LocalPeerSpi,\r | |
1726 | IKEV2_DELET_CHILDSA_LIST\r | |
1727 | );\r | |
1728 | } else {\r | |
1729 | Ikev2ChildSaSessionRemove (\r | |
1730 | &IkeSaSession->ChildSaSessionList,\r | |
1731 | ChildSaSession->LocalPeerSpi,\r | |
1732 | IKEV2_ESTABLISHING_CHILDSA_LIST\r | |
1733 | );\r | |
1734 | }\r | |
1735 | \r | |
1736 | Ikev2ChildSaSessionFree (ChildSaSession);\r | |
1737 | }\r | |
1738 | return ;\r | |
1739 | }\r | |
1740 | \r | |
1741 | //\r | |
1742 | // Increase the retry count.\r | |
1743 | //\r | |
1744 | SessionCommon->RetryCount++;\r | |
1745 | DEBUG ((DEBUG_INFO, ">>>Resending the last packet ...\n"));\r | |
1746 | \r | |
1747 | //\r | |
1748 | // Resend the last packet.\r | |
1749 | //\r | |
1750 | Ikev2SendIkePacket (\r | |
1751 | SessionCommon->UdpService,\r | |
1752 | (UINT8*)SessionCommon,\r | |
1753 | SessionCommon->LastSentPacket,\r | |
1754 | 0\r | |
1755 | );\r | |
1756 | }\r | |
1757 | \r | |
1758 | /**\r | |
1759 | Copy ChildSaSession->Spd->Selector to ChildSaSession->SpdSelector.\r | |
1760 | \r | |
1761 | ChildSaSession->SpdSelector stores the real Spdselector for its SA. Sometime,\r | |
1762 | the SpdSelector in ChildSaSession is more accurated or the scope is smaller \r | |
1763 | than the one in ChildSaSession->Spd, especially for the tunnel mode.\r | |
1764 | \r | |
1765 | @param[in, out] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION related to.\r | |
6b16c9e7 JW |
1766 | \r |
1767 | @retval EFI_SUCCESS The operation complete successfully.\r | |
1768 | @retval EFI_OUT_OF_RESOURCES If the required resource can't be allocated.\r | |
9166f840 | 1769 | \r |
1770 | **/\r | |
6b16c9e7 | 1771 | EFI_STATUS\r |
9166f840 | 1772 | Ikev2ChildSaSessionSpdSelectorCreate (\r |
1773 | IN OUT IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
1774 | ) \r | |
1775 | {\r | |
6b16c9e7 JW |
1776 | EFI_STATUS Status;\r |
1777 | \r | |
1778 | Status = EFI_SUCCESS;\r | |
1779 | \r | |
9166f840 | 1780 | if (ChildSaSession->Spd != NULL && ChildSaSession->Spd->Selector != NULL) {\r |
1781 | if (ChildSaSession->SpdSelector == NULL) {\r | |
1782 | ChildSaSession->SpdSelector = AllocateZeroPool (sizeof (EFI_IPSEC_SPD_SELECTOR));\r | |
6b16c9e7 JW |
1783 | if (ChildSaSession->SpdSelector == NULL) {\r |
1784 | Status = EFI_OUT_OF_RESOURCES;\r | |
1785 | return Status;\r | |
1786 | }\r | |
9166f840 | 1787 | }\r |
1788 | CopyMem (\r | |
1789 | ChildSaSession->SpdSelector, \r | |
1790 | ChildSaSession->Spd->Selector, \r | |
1791 | sizeof (EFI_IPSEC_SPD_SELECTOR)\r | |
1792 | );\r | |
1793 | ChildSaSession->SpdSelector->RemoteAddress = AllocateCopyPool (\r | |
1794 | ChildSaSession->Spd->Selector->RemoteAddressCount * \r | |
1795 | sizeof (EFI_IP_ADDRESS_INFO), \r | |
1796 | ChildSaSession->Spd->Selector->RemoteAddress\r | |
1797 | );\r | |
6b16c9e7 JW |
1798 | if (ChildSaSession->SpdSelector->RemoteAddress == NULL) {\r |
1799 | Status = EFI_OUT_OF_RESOURCES;\r | |
1800 | \r | |
1801 | FreePool (ChildSaSession->SpdSelector);\r | |
1802 | \r | |
1803 | return Status;\r | |
1804 | }\r | |
1805 | \r | |
9166f840 | 1806 | ChildSaSession->SpdSelector->LocalAddress = AllocateCopyPool (\r |
1807 | ChildSaSession->Spd->Selector->LocalAddressCount * \r | |
1808 | sizeof (EFI_IP_ADDRESS_INFO), \r | |
1809 | ChildSaSession->Spd->Selector->LocalAddress\r | |
1810 | );\r | |
6b16c9e7 JW |
1811 | if (ChildSaSession->SpdSelector->LocalAddress == NULL) {\r |
1812 | Status = EFI_OUT_OF_RESOURCES;\r | |
1813 | \r | |
1814 | FreePool (ChildSaSession->SpdSelector->RemoteAddress);\r | |
9166f840 | 1815 | \r |
6b16c9e7 JW |
1816 | FreePool (ChildSaSession->SpdSelector);\r |
1817 | \r | |
1818 | return Status;\r | |
1819 | }\r | |
9166f840 | 1820 | \r |
1821 | ChildSaSession->SpdSelector->RemoteAddressCount = ChildSaSession->Spd->Selector->RemoteAddressCount;\r | |
1822 | ChildSaSession->SpdSelector->LocalAddressCount = ChildSaSession->Spd->Selector->LocalAddressCount; \r | |
1823 | }\r | |
6b16c9e7 JW |
1824 | \r |
1825 | return Status;\r | |
9166f840 | 1826 | }\r |
1827 | \r | |
1828 | /**\r | |
1829 | Generate a ChildSa Session and insert it into related IkeSaSession.\r | |
1830 | \r | |
1831 | @param[in] IkeSaSession Pointer to related IKEV2_SA_SESSION.\r | |
1832 | @param[in] UdpService Pointer to related IKE_UDP_SERVICE.\r | |
1833 | \r | |
1834 | @return pointer of IKEV2_CHILD_SA_SESSION.\r | |
1835 | \r | |
1836 | **/\r | |
1837 | IKEV2_CHILD_SA_SESSION *\r | |
1838 | Ikev2ChildSaSessionCreate (\r | |
1839 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
1840 | IN IKE_UDP_SERVICE *UdpService\r | |
1841 | )\r | |
1842 | {\r | |
1843 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1844 | IKEV2_SESSION_COMMON *ChildSaCommon;\r | |
1845 | \r | |
1846 | //\r | |
1847 | // Create a new ChildSaSession.Insert it into processing list and initiate the common parameters.\r | |
1848 | //\r | |
1849 | ChildSaSession = Ikev2ChildSaSessionAlloc (UdpService, IkeSaSession);\r | |
6b16c9e7 JW |
1850 | if (ChildSaSession == NULL) {\r |
1851 | return NULL;\r | |
1852 | }\r | |
9166f840 | 1853 | \r |
1854 | //\r | |
1855 | // Set the specific parameters.\r | |
1856 | // \r | |
1857 | ChildSaSession->Spd = IkeSaSession->Spd;\r | |
1858 | ChildSaCommon = &ChildSaSession->SessionCommon;\r | |
1859 | ChildSaCommon->IsInitiator = IkeSaSession->SessionCommon.IsInitiator;\r | |
1860 | if (IkeSaSession->SessionCommon.State == IkeStateAuth) {\r | |
1861 | ChildSaCommon->State = IkeStateAuth;\r | |
1862 | IKEV2_DUMP_STATE (ChildSaCommon->State, IkeStateAuth);\r | |
1863 | } else {\r | |
1864 | ChildSaCommon->State = IkeStateCreateChild;\r | |
1865 | IKEV2_DUMP_STATE (ChildSaCommon->State, IkeStateCreateChild);\r | |
1866 | }\r | |
1867 | \r | |
1868 | //\r | |
1869 | // If SPD->Selector is not NULL, copy it to the ChildSaSession->SpdSelector.\r | |
1870 | // The ChildSaSession->SpdSelector might be changed after the traffic selector\r | |
1871 | // negoniation and it will be copied into the SAData after ChildSA established.\r | |
1872 | //\r | |
6b16c9e7 JW |
1873 | if (EFI_ERROR (Ikev2ChildSaSessionSpdSelectorCreate (ChildSaSession))) {\r |
1874 | Ikev2ChildSaSessionFree (ChildSaSession);\r | |
1875 | return NULL;\r | |
1876 | }\r | |
9166f840 | 1877 | \r |
1878 | //\r | |
1879 | // Copy first NiBlock and NrBlock to ChildSa Session\r | |
1880 | //\r | |
1881 | ChildSaSession->NiBlock = AllocateZeroPool (IkeSaSession->NiBlkSize);\r | |
6b16c9e7 JW |
1882 | if (ChildSaSession->NiBlock == NULL) {\r |
1883 | Ikev2ChildSaSessionFree (ChildSaSession);\r | |
1884 | return NULL;\r | |
1885 | }\r | |
1886 | \r | |
9166f840 | 1887 | ChildSaSession->NiBlkSize = IkeSaSession->NiBlkSize;\r |
1888 | CopyMem (ChildSaSession->NiBlock, IkeSaSession->NiBlock, IkeSaSession->NiBlkSize);\r | |
1889 | \r | |
1890 | ChildSaSession->NrBlock = AllocateZeroPool (IkeSaSession->NrBlkSize);\r | |
6b16c9e7 JW |
1891 | if (ChildSaSession->NrBlock == NULL) {\r |
1892 | Ikev2ChildSaSessionFree (ChildSaSession);\r | |
1893 | return NULL;\r | |
1894 | }\r | |
1895 | \r | |
9166f840 | 1896 | ChildSaSession->NrBlkSize = IkeSaSession->NrBlkSize;\r |
1897 | CopyMem (ChildSaSession->NrBlock, IkeSaSession->NrBlock, IkeSaSession->NrBlkSize);\r | |
1898 | \r | |
1899 | //\r | |
1900 | // Only if the Create Child SA is called for the IKE_INIT Exchange and \r | |
1901 | // IkeSaSession is initiator (Only Initiator's SPD is not NULL), Set the \r | |
1902 | // Traffic Selectors related information here.\r | |
1903 | //\r | |
1904 | if (IkeSaSession->SessionCommon.State == IkeStateAuth && IkeSaSession->Spd != NULL) {\r | |
1905 | ChildSaSession->ProtoId = IkeSaSession->Spd->Selector->NextLayerProtocol;\r | |
1906 | ChildSaSession->LocalPort = IkeSaSession->Spd->Selector->LocalPort;\r | |
1907 | ChildSaSession->RemotePort = IkeSaSession->Spd->Selector->RemotePort;\r | |
1908 | }\r | |
1909 | \r | |
1910 | //\r | |
1911 | // Insert the new ChildSaSession into processing child SA list.\r | |
1912 | //\r | |
1913 | Ikev2ChildSaSessionInsert (&IkeSaSession->ChildSaSessionList, ChildSaSession);\r | |
1914 | return ChildSaSession;\r | |
1915 | }\r | |
1916 | \r | |
1917 | /**\r | |
1918 | Check if the SPD is related to the input Child SA Session.\r | |
1919 | \r | |
1920 | This function is the subfunction of Ikev1AssociateSpdEntry(). It is the call\r | |
1921 | back function of IpSecVisitConfigData(). \r | |
1922 | \r | |
1923 | \r | |
1924 | @param[in] Type Type of the input Config Selector.\r | |
1925 | @param[in] Selector Pointer to the Configure Selector to be checked. \r | |
1926 | @param[in] Data Pointer to the Configure Selector's Data passed \r | |
1927 | from the caller.\r | |
1928 | @param[in] SelectorSize The buffer size of Selector.\r | |
1929 | @param[in] DataSize The buffer size of the Data.\r | |
1930 | @param[in] Context The data passed from the caller. It is a Child\r | |
1931 | SA Session in this context.\r | |
1932 | \r | |
1933 | @retval EFI_SUCCESS The SPD Selector is not related to the Child SA Session. \r | |
1934 | @retval EFI_ABORTED The SPD Selector is related to the Child SA session and \r | |
1935 | set the ChildSaSession->Spd to point to this SPD Selector.\r | |
1936 | \r | |
1937 | **/\r | |
1938 | EFI_STATUS\r | |
1939 | Ikev2MatchSpdEntry (\r | |
1940 | IN EFI_IPSEC_CONFIG_DATA_TYPE Type,\r | |
1941 | IN EFI_IPSEC_CONFIG_SELECTOR *Selector,\r | |
1942 | IN VOID *Data,\r | |
1943 | IN UINTN SelectorSize,\r | |
1944 | IN UINTN DataSize,\r | |
1945 | IN VOID *Context\r | |
1946 | )\r | |
1947 | {\r | |
1948 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1949 | EFI_IPSEC_SPD_SELECTOR *SpdSelector;\r | |
1950 | EFI_IPSEC_SPD_DATA *SpdData;\r | |
1951 | BOOLEAN IsMatch;\r | |
1952 | UINT8 IpVersion;\r | |
1953 | \r | |
1954 | ASSERT (Type == IPsecConfigDataTypeSpd);\r | |
1955 | SpdData = (EFI_IPSEC_SPD_DATA *) Data;\r | |
1956 | //\r | |
1957 | // Bypass all non-protect SPD entry first\r | |
1958 | //\r | |
1959 | if (SpdData->Action != EfiIPsecActionProtect) {\r | |
1960 | return EFI_SUCCESS;\r | |
1961 | }\r | |
1962 | \r | |
1963 | ChildSaSession = (IKEV2_CHILD_SA_SESSION *) Context;\r | |
1964 | IpVersion = ChildSaSession->SessionCommon.UdpService->IpVersion;\r | |
1965 | SpdSelector = (EFI_IPSEC_SPD_SELECTOR *) Selector; \r | |
1966 | IsMatch = TRUE;\r | |
1967 | \r | |
1968 | if (SpdSelector->NextLayerProtocol == EFI_IP_PROTO_UDP &&\r | |
1969 | SpdSelector->LocalPort == IKE_DEFAULT_PORT &&\r | |
1970 | SpdSelector->LocalPortRange == 0 &&\r | |
1971 | SpdSelector->RemotePort == IKE_DEFAULT_PORT &&\r | |
1972 | SpdSelector->RemotePortRange == 0\r | |
1973 | ) {\r | |
1974 | //\r | |
1975 | // TODO: Skip IKE Policy here or set a SPD entry?\r | |
1976 | //\r | |
1977 | return EFI_SUCCESS;\r | |
1978 | }\r | |
1979 | \r | |
1980 | if (SpdSelector->NextLayerProtocol != EFI_IPSEC_ANY_PROTOCOL &&\r | |
1981 | SpdSelector->NextLayerProtocol != ChildSaSession->ProtoId\r | |
1982 | ) {\r | |
1983 | IsMatch = FALSE;\r | |
1984 | }\r | |
1985 | \r | |
1986 | if (SpdSelector->LocalPort != EFI_IPSEC_ANY_PORT && SpdSelector->LocalPort != ChildSaSession->LocalPort) {\r | |
1987 | IsMatch = FALSE;\r | |
1988 | }\r | |
1989 | \r | |
1990 | if (SpdSelector->RemotePort != EFI_IPSEC_ANY_PORT && SpdSelector->RemotePort != ChildSaSession->RemotePort) {\r | |
1991 | IsMatch = FALSE;\r | |
1992 | }\r | |
1993 | \r | |
1994 | IsMatch = (BOOLEAN) (IsMatch && \r | |
1995 | IpSecMatchIpAddress (\r | |
1996 | IpVersion,\r | |
1997 | &ChildSaSession->SessionCommon.LocalPeerIp,\r | |
1998 | SpdSelector->LocalAddress,\r | |
1999 | SpdSelector->LocalAddressCount\r | |
2000 | ));\r | |
2001 | \r | |
2002 | IsMatch = (BOOLEAN) (IsMatch && \r | |
2003 | IpSecMatchIpAddress (\r | |
2004 | IpVersion,\r | |
2005 | &ChildSaSession->SessionCommon.RemotePeerIp,\r | |
2006 | SpdSelector->RemoteAddress,\r | |
2007 | SpdSelector->RemoteAddressCount\r | |
2008 | ));\r | |
2009 | \r | |
2010 | if (IsMatch) {\r | |
2011 | ChildSaSession->Spd = IkeSearchSpdEntry (SpdSelector);\r | |
2012 | return EFI_ABORTED;\r | |
2013 | } else {\r | |
2014 | return EFI_SUCCESS;\r | |
2015 | }\r | |
2016 | }\r | |
2017 | \r | |
2018 | /**\r | |
2019 | Check if the Algorithm ID is supported.\r | |
2020 | \r | |
2021 | @param[in] AlgorithmId The specified Algorithm ID.\r | |
2022 | @param[in] Type The type used to indicate the Algorithm is for Encrypt or\r | |
2023 | Authentication.\r | |
2024 | \r | |
2025 | @retval TRUE If the Algorithm ID is supported.\r | |
2026 | @retval FALSE If the Algorithm ID is not supported.\r | |
2027 | \r | |
2028 | **/\r | |
2029 | BOOLEAN\r | |
2030 | Ikev2IsSupportAlg (\r | |
2031 | IN UINT16 AlgorithmId,\r | |
2032 | IN UINT8 Type\r | |
2033 | )\r | |
2034 | {\r | |
2035 | UINT8 Index;\r | |
2036 | switch (Type) {\r | |
2037 | case IKE_ENCRYPT_TYPE :\r | |
2038 | for (Index = 0; Index < IKEV2_SUPPORT_ENCRYPT_ALGORITHM_NUM; Index++) {\r | |
2039 | if (mIkev2EncryptAlgorithmList[Index] == AlgorithmId) {\r | |
2040 | return TRUE;\r | |
2041 | }\r | |
2042 | }\r | |
2043 | break;\r | |
2044 | \r | |
2045 | case IKE_AUTH_TYPE :\r | |
2046 | for (Index = 0; Index < IKEV2_SUPPORT_AUTH_ALGORITHM_NUM; Index++) {\r | |
2047 | if (mIkev2AuthAlgorithmList[Index] == AlgorithmId) {\r | |
2048 | return TRUE;\r | |
2049 | }\r | |
2050 | }\r | |
2051 | break;\r | |
2052 | \r | |
2053 | case IKE_DH_TYPE :\r | |
2054 | for (Index = 0; Index < IKEV2_SUPPORT_DH_ALGORITHM_NUM; Index++) {\r | |
2055 | if (mIkev2DhGroupAlgorithmList[Index] == AlgorithmId) {\r | |
2056 | return TRUE;\r | |
2057 | }\r | |
2058 | }\r | |
2059 | break;\r | |
2060 | \r | |
2061 | case IKE_PRF_TYPE :\r | |
2062 | for (Index = 0; Index < IKEV2_SUPPORT_PRF_ALGORITHM_NUM; Index++) {\r | |
2063 | if (mIkev2PrfAlgorithmList[Index] == AlgorithmId) {\r | |
2064 | return TRUE;\r | |
2065 | }\r | |
2066 | }\r | |
2067 | }\r | |
2068 | return FALSE;\r | |
2069 | }\r | |
2070 | \r | |
2071 | /**\r | |
2072 | Get the preferred algorithm types from ProposalData.\r | |
2073 | \r | |
2074 | @param[in] ProposalData Pointer to related IKEV2_PROPOSAL_DATA.\r | |
2075 | @param[out] PreferEncryptAlgorithm Output of preferred encrypt algorithm.\r | |
2076 | @param[out] PreferIntegrityAlgorithm Output of preferred integrity algorithm. \r | |
2077 | @param[out] PreferPrfAlgorithm Output of preferred PRF algorithm. Only \r | |
2078 | for IKE SA.\r | |
2079 | @param[out] PreferDhGroup Output of preferred DH group. Only for \r | |
2080 | IKE SA.\r | |
2081 | @param[out] PreferEncryptKeylength Output of preferred encrypt key length \r | |
2082 | in bytes.\r | |
2083 | @param[out] IsSupportEsn Output of value about the Extented Sequence\r | |
2084 | Number is support or not. Only for Child SA.\r | |
2085 | @param[in] IsChildSa If it is ture, the ProposalData is for IKE\r | |
2086 | SA. Otherwise the proposalData is for Child SA.\r | |
2087 | \r | |
2088 | **/\r | |
2089 | VOID\r | |
2090 | Ikev2ParseProposalData (\r | |
2091 | IN IKEV2_PROPOSAL_DATA *ProposalData, \r | |
2092 | OUT UINT16 *PreferEncryptAlgorithm,\r | |
2093 | OUT UINT16 *PreferIntegrityAlgorithm,\r | |
2094 | OUT UINT16 *PreferPrfAlgorithm,\r | |
2095 | OUT UINT16 *PreferDhGroup,\r | |
2096 | OUT UINTN *PreferEncryptKeylength,\r | |
2097 | OUT BOOLEAN *IsSupportEsn,\r | |
2098 | IN BOOLEAN IsChildSa\r | |
2099 | ) \r | |
2100 | {\r | |
2101 | IKEV2_TRANSFORM_DATA *TransformData;\r | |
2102 | UINT8 TransformIndex;\r | |
2103 | \r | |
2104 | //\r | |
2105 | // Check input parameters.\r | |
2106 | //\r | |
2107 | if (ProposalData == NULL ||\r | |
2108 | PreferEncryptAlgorithm == NULL || \r | |
2109 | PreferIntegrityAlgorithm == NULL ||\r | |
2110 | PreferEncryptKeylength == NULL\r | |
2111 | ) {\r | |
2112 | return;\r | |
2113 | }\r | |
2114 | \r | |
2115 | if (IsChildSa) {\r | |
2116 | if (IsSupportEsn == NULL) {\r | |
2117 | return;\r | |
2118 | }\r | |
2119 | } else {\r | |
2120 | if (PreferPrfAlgorithm == NULL || PreferDhGroup == NULL) {\r | |
2121 | return;\r | |
2122 | }\r | |
2123 | } \r | |
2124 | \r | |
2125 | TransformData = (IKEV2_TRANSFORM_DATA *)(ProposalData + 1);\r | |
2126 | for (TransformIndex = 0; TransformIndex < ProposalData->NumTransforms; TransformIndex++) {\r | |
2127 | switch (TransformData->TransformType) { \r | |
2128 | //\r | |
2129 | // For IKE SA there are four algorithm types. Encryption Algorithm, Pseudo-random Function, \r | |
2130 | // Integrity Algorithm, Diffie-Hellman Group. For Child SA, there are three algorithm types. \r | |
2131 | // Encryption Algorithm, Integrity Algorithm, Extended Sequence Number.\r | |
2132 | //\r | |
2133 | case IKEV2_TRANSFORM_TYPE_ENCR:\r | |
2134 | if (*PreferEncryptAlgorithm == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_ENCRYPT_TYPE)) {\r | |
2135 | //\r | |
2136 | // Check the attribute value. According to RFC, only Keylength is support.\r | |
2137 | //\r | |
2138 | if (TransformData->Attribute.AttrType == IKEV2_ATTRIBUTE_TYPE_KEYLEN) {\r | |
2139 | //\r | |
2140 | // If the Keylength is not support, continue to check the next one.\r | |
2141 | //\r | |
2142 | if (IpSecGetEncryptKeyLength ((UINT8)TransformData->TransformId) != (UINTN)(TransformData->Attribute.Attr.AttrValue >> 3)){\r | |
2143 | break;\r | |
2144 | } else {\r | |
2145 | *PreferEncryptKeylength = TransformData->Attribute.Attr.AttrValue;\r | |
2146 | }\r | |
2147 | }\r | |
2148 | *PreferEncryptAlgorithm = TransformData->TransformId;\r | |
2149 | }\r | |
2150 | break;\r | |
2151 | \r | |
2152 | case IKEV2_TRANSFORM_TYPE_PRF :\r | |
2153 | if (!IsChildSa) {\r | |
2154 | if (*PreferPrfAlgorithm == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_PRF_TYPE)) {\r | |
2155 | *PreferPrfAlgorithm = TransformData->TransformId;\r | |
2156 | }\r | |
2157 | } \r | |
2158 | break;\r | |
2159 | \r | |
2160 | case IKEV2_TRANSFORM_TYPE_INTEG :\r | |
2161 | if (*PreferIntegrityAlgorithm == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_AUTH_TYPE)) {\r | |
2162 | *PreferIntegrityAlgorithm = TransformData->TransformId;\r | |
2163 | }\r | |
2164 | break;\r | |
2165 | \r | |
2166 | case IKEV2_TRANSFORM_TYPE_DH :\r | |
2167 | if (!IsChildSa) {\r | |
2168 | if (*PreferDhGroup == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_DH_TYPE)) {\r | |
2169 | *PreferDhGroup = TransformData->TransformId;\r | |
2170 | }\r | |
2171 | } \r | |
2172 | break;\r | |
2173 | \r | |
2174 | case IKEV2_TRANSFORM_TYPE_ESN :\r | |
2175 | if (IsChildSa) {\r | |
2176 | if (TransformData->TransformId != 0) {\r | |
2177 | *IsSupportEsn = TRUE;\r | |
2178 | }\r | |
2179 | } \r | |
2180 | break;\r | |
2181 | \r | |
2182 | default:\r | |
2183 | break;\r | |
2184 | }\r | |
2185 | TransformData = (IKEV2_TRANSFORM_DATA *)(TransformData + 1);\r | |
2186 | }\r | |
2187 | }\r | |
2188 | \r | |
2189 | /**\r | |
2190 | Parse the received Initial Exchange Packet.\r | |
2191 | \r | |
2192 | This function parse the SA Payload and Key Payload to find out the cryptographic \r | |
2193 | suite for the further IKE negotiation and fill it into the IKE SA Session's \r | |
2194 | CommonSession->SaParams.\r | |
2195 | \r | |
2196 | @param[in, out] IkeSaSession Pointer to related IKEV2_SA_SESSION.\r | |
2197 | @param[in] SaPayload The received packet.\r | |
2198 | @param[in] Type The received packet IKE header flag. \r | |
2199 | \r | |
2200 | @retval TRUE If the SA proposal in Packet is acceptable.\r | |
2201 | @retval FALSE If the SA proposal in Packet is not acceptable.\r | |
2202 | \r | |
2203 | **/\r | |
2204 | BOOLEAN\r | |
2205 | Ikev2SaParseSaPayload (\r | |
2206 | IN OUT IKEV2_SA_SESSION *IkeSaSession,\r | |
2207 | IN IKE_PAYLOAD *SaPayload,\r | |
2208 | IN UINT8 Type\r | |
2209 | )\r | |
2210 | {\r | |
2211 | IKEV2_PROPOSAL_DATA *ProposalData;\r | |
2212 | UINT8 ProposalIndex;\r | |
2213 | UINT16 PreferEncryptAlgorithm;\r | |
2214 | UINT16 PreferIntegrityAlgorithm;\r | |
2215 | UINT16 PreferPrfAlgorithm;\r | |
2216 | UINT16 PreferDhGroup;\r | |
2217 | UINTN PreferEncryptKeylength;\r | |
2218 | UINT16 EncryptAlgorithm;\r | |
2219 | UINT16 IntegrityAlgorithm;\r | |
2220 | UINT16 PrfAlgorithm;\r | |
2221 | UINT16 DhGroup;\r | |
2222 | UINTN EncryptKeylength;\r | |
2223 | BOOLEAN IsMatch;\r | |
2224 | UINTN SaDataSize;\r | |
2225 | \r | |
2226 | PreferPrfAlgorithm = 0;\r | |
2227 | PreferIntegrityAlgorithm = 0;\r | |
2228 | PreferDhGroup = 0;\r | |
2229 | PreferEncryptAlgorithm = 0;\r | |
2230 | PreferEncryptKeylength = 0;\r | |
2231 | PrfAlgorithm = 0;\r | |
2232 | IntegrityAlgorithm = 0;\r | |
2233 | DhGroup = 0;\r | |
2234 | EncryptAlgorithm = 0;\r | |
2235 | EncryptKeylength = 0;\r | |
2236 | IsMatch = FALSE;\r | |
2237 | \r | |
2238 | if (Type == IKE_HEADER_FLAGS_INIT) {\r | |
2239 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *)SaPayload->PayloadBuf + 1);\r | |
2240 | for (ProposalIndex = 0; ProposalIndex < ((IKEV2_SA_DATA *)SaPayload->PayloadBuf)->NumProposals; ProposalIndex++) {\r | |
2241 | //\r | |
2242 | // Iterate each proposal to find the perfered one.\r | |
2243 | //\r | |
2244 | if (ProposalData->ProtocolId == IPSEC_PROTO_ISAKMP && ProposalData->NumTransforms >= 4) {\r | |
2245 | //\r | |
2246 | // Get the preferred algorithms.\r | |
2247 | //\r | |
2248 | Ikev2ParseProposalData (\r | |
2249 | ProposalData, \r | |
2250 | &PreferEncryptAlgorithm,\r | |
2251 | &PreferIntegrityAlgorithm,\r | |
2252 | &PreferPrfAlgorithm,\r | |
2253 | &PreferDhGroup,\r | |
2254 | &PreferEncryptKeylength,\r | |
2255 | NULL,\r | |
2256 | FALSE\r | |
2257 | );\r | |
2258 | \r | |
2259 | if (PreferEncryptAlgorithm != 0 &&\r | |
2260 | PreferIntegrityAlgorithm != 0 &&\r | |
2261 | PreferPrfAlgorithm != 0 && \r | |
2262 | PreferDhGroup != 0\r | |
2263 | ) {\r | |
2264 | //\r | |
2265 | // Find the matched one. \r | |
2266 | //\r | |
2267 | IkeSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
6b16c9e7 JW |
2268 | if (IkeSaSession->SessionCommon.SaParams == NULL) {\r |
2269 | return FALSE;\r | |
2270 | }\r | |
2271 | \r | |
9166f840 | 2272 | IkeSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r |
2273 | IkeSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2274 | IkeSaSession->SessionCommon.SaParams->DhGroup = PreferDhGroup;\r | |
2275 | IkeSaSession->SessionCommon.SaParams->Prf = PreferPrfAlgorithm;\r | |
2276 | IkeSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2277 | IkeSaSession->SessionCommon.PreferDhGroup = PreferDhGroup;\r | |
2278 | \r | |
2279 | //\r | |
2280 | // Save the matched one in IKEV2_SA_DATA for furthure calculation.\r | |
2281 | //\r | |
2282 | SaDataSize = sizeof (IKEV2_SA_DATA) +\r | |
2283 | sizeof (IKEV2_PROPOSAL_DATA) +\r | |
2284 | sizeof (IKEV2_TRANSFORM_DATA) * 4;\r | |
2285 | IkeSaSession->SaData = AllocateZeroPool (SaDataSize);\r | |
6b16c9e7 JW |
2286 | if (IkeSaSession->SaData == NULL) {\r |
2287 | FreePool (IkeSaSession->SessionCommon.SaParams);\r | |
2288 | return FALSE;\r | |
2289 | }\r | |
9166f840 | 2290 | \r |
2291 | IkeSaSession->SaData->NumProposals = 1;\r | |
2292 | \r | |
2293 | //\r | |
2294 | // BUGBUG: Suppose the matched proposal only has 4 transforms. If\r | |
2295 | // The matched Proposal has more than 4 transforms means it contains\r | |
2296 | // one than one transform with same type.\r | |
2297 | //\r | |
2298 | CopyMem (\r | |
2299 | (IKEV2_PROPOSAL_DATA *) (IkeSaSession->SaData + 1), \r | |
2300 | ProposalData, \r | |
2301 | SaDataSize - sizeof (IKEV2_SA_DATA)\r | |
2302 | );\r | |
2303 | \r | |
2304 | ((IKEV2_PROPOSAL_DATA *) (IkeSaSession->SaData + 1))->ProposalIndex = 1;\r | |
6b16c9e7 | 2305 | \r |
9166f840 | 2306 | return TRUE;\r |
2307 | } else {\r | |
2308 | PreferEncryptAlgorithm = 0;\r | |
2309 | PreferIntegrityAlgorithm = 0;\r | |
2310 | PreferPrfAlgorithm = 0;\r | |
2311 | PreferDhGroup = 0;\r | |
2312 | PreferEncryptKeylength = 0;\r | |
2313 | }\r | |
2314 | }\r | |
2315 | //\r | |
2316 | // Point to next Proposal.\r | |
2317 | //\r | |
2318 | ProposalData = (IKEV2_PROPOSAL_DATA*)((UINT8*)(ProposalData + 1) + \r | |
2319 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA));\r | |
2320 | }\r | |
2321 | } else if (Type == IKE_HEADER_FLAGS_RESPOND) {\r | |
2322 | //\r | |
2323 | // First check the SA proposal's ProtoctolID and Transform Numbers. Since it is \r | |
2324 | // the responded SA proposal, suppose it only has one proposal and the transform Numbers \r | |
2325 | // is 4. \r | |
2326 | //\r | |
2327 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *) SaPayload->PayloadBuf + 1);\r | |
2328 | if (ProposalData->ProtocolId != IPSEC_PROTO_ISAKMP || ProposalData->NumTransforms != 4) {\r | |
2329 | return FALSE;\r | |
2330 | }\r | |
2331 | //\r | |
2332 | // Get the preferred algorithms. \r | |
2333 | //\r | |
2334 | Ikev2ParseProposalData (\r | |
2335 | ProposalData,\r | |
2336 | &PreferEncryptAlgorithm,\r | |
2337 | &PreferIntegrityAlgorithm,\r | |
2338 | &PreferPrfAlgorithm,\r | |
2339 | &PreferDhGroup,\r | |
2340 | &PreferEncryptKeylength,\r | |
2341 | NULL, \r | |
2342 | FALSE\r | |
2343 | );\r | |
2344 | // \r | |
2345 | // Check if the Sa proposal data from received packet is in the IkeSaSession->SaData.\r | |
2346 | //\r | |
2347 | ProposalData = (IKEV2_PROPOSAL_DATA *) (IkeSaSession->SaData + 1);\r | |
2348 | \r | |
2349 | for (ProposalIndex = 0; ProposalIndex < IkeSaSession->SaData->NumProposals && (!IsMatch); ProposalIndex++) {\r | |
2350 | Ikev2ParseProposalData (\r | |
2351 | ProposalData, \r | |
2352 | &EncryptAlgorithm,\r | |
2353 | &IntegrityAlgorithm,\r | |
2354 | &PrfAlgorithm,\r | |
2355 | &DhGroup,\r | |
2356 | &EncryptKeylength,\r | |
2357 | NULL,\r | |
2358 | FALSE\r | |
2359 | );\r | |
2360 | if (EncryptAlgorithm == PreferEncryptAlgorithm &&\r | |
2361 | EncryptKeylength == PreferEncryptKeylength &&\r | |
2362 | IntegrityAlgorithm == PreferIntegrityAlgorithm &&\r | |
2363 | PrfAlgorithm == PreferPrfAlgorithm &&\r | |
2364 | DhGroup == PreferDhGroup\r | |
2365 | ) {\r | |
2366 | IsMatch = TRUE;\r | |
2367 | } else {\r | |
2368 | EncryptAlgorithm = 0;\r | |
2369 | IntegrityAlgorithm = 0;\r | |
2370 | PrfAlgorithm = 0;\r | |
2371 | DhGroup = 0;\r | |
2372 | EncryptKeylength = 0; \r | |
2373 | }\r | |
2374 | \r | |
2375 | ProposalData = (IKEV2_PROPOSAL_DATA*)((UINT8*)(ProposalData + 1) + \r | |
2376 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA)); \r | |
2377 | }\r | |
2378 | \r | |
2379 | if (IsMatch) {\r | |
2380 | IkeSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
6b16c9e7 JW |
2381 | if (IkeSaSession->SessionCommon.SaParams == NULL) {\r |
2382 | return FALSE;\r | |
2383 | }\r | |
2384 | \r | |
9166f840 | 2385 | IkeSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r |
2386 | IkeSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2387 | IkeSaSession->SessionCommon.SaParams->DhGroup = PreferDhGroup;\r | |
2388 | IkeSaSession->SessionCommon.SaParams->Prf = PreferPrfAlgorithm;\r | |
2389 | IkeSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2390 | IkeSaSession->SessionCommon.PreferDhGroup = PreferDhGroup;\r | |
2391 | \r | |
2392 | return TRUE;\r | |
2393 | }\r | |
2394 | }\r | |
6b16c9e7 | 2395 | \r |
9166f840 | 2396 | return FALSE;\r |
2397 | }\r | |
2398 | \r | |
2399 | /**\r | |
2400 | Parse the received Authentication Exchange Packet.\r | |
2401 | \r | |
2402 | This function parse the SA Payload and Key Payload to find out the cryptographic\r | |
2403 | suite for the ESP and fill it into the Child SA Session's CommonSession->SaParams.\r | |
2404 | \r | |
2405 | @param[in, out] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION related to \r | |
2406 | this Authentication Exchange.\r | |
2407 | @param[in] SaPayload The received packet.\r | |
2408 | @param[in] Type The IKE header's flag of received packet . \r | |
2409 | \r | |
2410 | @retval TRUE If the SA proposal in Packet is acceptable.\r | |
2411 | @retval FALSE If the SA proposal in Packet is not acceptable.\r | |
2412 | \r | |
2413 | **/\r | |
2414 | BOOLEAN\r | |
2415 | Ikev2ChildSaParseSaPayload (\r | |
2416 | IN OUT IKEV2_CHILD_SA_SESSION *ChildSaSession,\r | |
2417 | IN IKE_PAYLOAD *SaPayload,\r | |
2418 | IN UINT8 Type\r | |
2419 | )\r | |
2420 | {\r | |
2421 | IKEV2_PROPOSAL_DATA *ProposalData;\r | |
2422 | UINT8 ProposalIndex;\r | |
2423 | UINT16 PreferEncryptAlgorithm;\r | |
2424 | UINT16 PreferIntegrityAlgorithm;\r | |
2425 | UINTN PreferEncryptKeylength;\r | |
2426 | BOOLEAN PreferIsSupportEsn;\r | |
2427 | UINT16 EncryptAlgorithm;\r | |
2428 | UINT16 IntegrityAlgorithm;\r | |
2429 | UINTN EncryptKeylength;\r | |
2430 | BOOLEAN IsSupportEsn;\r | |
2431 | BOOLEAN IsMatch;\r | |
2432 | UINTN SaDataSize;\r | |
2433 | \r | |
2434 | \r | |
2435 | PreferIntegrityAlgorithm = 0;\r | |
2436 | PreferEncryptAlgorithm = 0;\r | |
2437 | PreferEncryptKeylength = 0;\r | |
2438 | IntegrityAlgorithm = 0;\r | |
2439 | EncryptAlgorithm = 0;\r | |
2440 | EncryptKeylength = 0;\r | |
2441 | IsMatch = TRUE;\r | |
2442 | IsSupportEsn = FALSE;\r | |
2443 | PreferIsSupportEsn = FALSE;\r | |
2444 | \r | |
2445 | if (Type == IKE_HEADER_FLAGS_INIT) {\r | |
2446 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *) SaPayload->PayloadBuf + 1);\r | |
2447 | for (ProposalIndex = 0; ProposalIndex < ((IKEV2_SA_DATA *) SaPayload->PayloadBuf)->NumProposals; ProposalIndex++) {\r | |
2448 | //\r | |
2449 | // Iterate each proposal to find the preferred one.\r | |
2450 | //\r | |
2451 | if (ProposalData->ProtocolId == IPSEC_PROTO_IPSEC_ESP && ProposalData->NumTransforms >= 3) {\r | |
2452 | //\r | |
2453 | // Get the preferred algorithm.\r | |
2454 | //\r | |
2455 | Ikev2ParseProposalData (\r | |
2456 | ProposalData,\r | |
2457 | &PreferEncryptAlgorithm,\r | |
2458 | &PreferIntegrityAlgorithm,\r | |
2459 | NULL,\r | |
2460 | NULL,\r | |
2461 | &PreferEncryptKeylength,\r | |
2462 | &IsSupportEsn,\r | |
2463 | TRUE\r | |
2464 | );\r | |
2465 | //\r | |
2466 | // Don't support the ESN now.\r | |
2467 | //\r | |
2468 | if (PreferEncryptAlgorithm != 0 && \r | |
2469 | PreferIntegrityAlgorithm != 0 &&\r | |
2470 | !IsSupportEsn\r | |
2471 | ) {\r | |
2472 | //\r | |
2473 | // Find the matched one. \r | |
2474 | //\r | |
2475 | ChildSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
6b16c9e7 JW |
2476 | if (ChildSaSession->SessionCommon.SaParams == NULL) {\r |
2477 | return FALSE;\r | |
2478 | }\r | |
2479 | \r | |
9166f840 | 2480 | ChildSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r |
2481 | ChildSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2482 | ChildSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2483 | CopyMem (&ChildSaSession->RemotePeerSpi, ProposalData->Spi, sizeof (ChildSaSession->RemotePeerSpi));\r | |
2484 | \r | |
2485 | //\r | |
2486 | // Save the matched one in IKEV2_SA_DATA for furthure calculation.\r | |
2487 | //\r | |
2488 | SaDataSize = sizeof (IKEV2_SA_DATA) +\r | |
2489 | sizeof (IKEV2_PROPOSAL_DATA) +\r | |
2490 | sizeof (IKEV2_TRANSFORM_DATA) * 4;\r | |
2491 | \r | |
2492 | ChildSaSession->SaData = AllocateZeroPool (SaDataSize);\r | |
6b16c9e7 JW |
2493 | if (ChildSaSession->SaData == NULL) {\r |
2494 | FreePool (ChildSaSession->SessionCommon.SaParams);\r | |
2495 | return FALSE;\r | |
2496 | }\r | |
9166f840 | 2497 | \r |
2498 | ChildSaSession->SaData->NumProposals = 1;\r | |
2499 | \r | |
2500 | //\r | |
2501 | // BUGBUG: Suppose there are 4 transforms in the matched proposal. If\r | |
2502 | // the matched Proposal has more than 4 transforms that means there \r | |
2503 | // are more than one transform with same type.\r | |
2504 | //\r | |
2505 | CopyMem (\r | |
2506 | (IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1),\r | |
2507 | ProposalData,\r | |
2508 | SaDataSize - sizeof (IKEV2_SA_DATA)\r | |
2509 | );\r | |
2510 | \r | |
2511 | ((IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1))->ProposalIndex = 1;\r | |
2512 | \r | |
2513 | ((IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1))->Spi = AllocateCopyPool (\r | |
2514 | sizeof (ChildSaSession->LocalPeerSpi), \r | |
2515 | &ChildSaSession->LocalPeerSpi\r | |
2516 | );\r | |
6b16c9e7 JW |
2517 | if (((IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1))->Spi == NULL) {\r |
2518 | FreePool (ChildSaSession->SessionCommon.SaParams);\r | |
2519 | \r | |
2520 | FreePool (ChildSaSession->SaData );\r | |
2521 | \r | |
2522 | return FALSE;\r | |
2523 | }\r | |
2524 | \r | |
9166f840 | 2525 | return TRUE;\r |
2526 | \r | |
2527 | } else {\r | |
2528 | PreferEncryptAlgorithm = 0;\r | |
2529 | PreferIntegrityAlgorithm = 0;\r | |
2530 | IsSupportEsn = TRUE;\r | |
2531 | }\r | |
2532 | }\r | |
2533 | //\r | |
2534 | // Point to next Proposal\r | |
2535 | //\r | |
2536 | ProposalData = (IKEV2_PROPOSAL_DATA *)((UINT8 *)(ProposalData + 1) + \r | |
2537 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA));\r | |
2538 | }\r | |
2539 | } else if (Type == IKE_HEADER_FLAGS_RESPOND) {\r | |
2540 | //\r | |
2541 | // First check the SA proposal's ProtoctolID and Transform Numbers. Since it is \r | |
2542 | // the responded SA proposal, suppose it only has one proposal and the transform Numbers \r | |
2543 | // is 3. \r | |
2544 | //\r | |
2545 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *)SaPayload->PayloadBuf + 1);\r | |
2546 | if (ProposalData->ProtocolId != IPSEC_PROTO_IPSEC_ESP || ProposalData->NumTransforms != 3) {\r | |
2547 | return FALSE;\r | |
2548 | }\r | |
2549 | //\r | |
2550 | // Get the preferred algorithms.\r | |
2551 | //\r | |
2552 | Ikev2ParseProposalData (\r | |
2553 | ProposalData,\r | |
2554 | &PreferEncryptAlgorithm,\r | |
2555 | &PreferIntegrityAlgorithm,\r | |
2556 | NULL,\r | |
2557 | NULL,\r | |
2558 | &PreferEncryptKeylength,\r | |
2559 | &PreferIsSupportEsn,\r | |
2560 | TRUE\r | |
2561 | );\r | |
2562 | \r | |
2563 | ProposalData = (IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1);\r | |
2564 | \r | |
2565 | for (ProposalIndex = 0; ProposalIndex < ChildSaSession->SaData->NumProposals && (!IsMatch); ProposalIndex++) {\r | |
2566 | Ikev2ParseProposalData (\r | |
2567 | ProposalData, \r | |
2568 | &EncryptAlgorithm,\r | |
2569 | &IntegrityAlgorithm,\r | |
2570 | NULL,\r | |
2571 | NULL,\r | |
2572 | &EncryptKeylength,\r | |
2573 | &IsSupportEsn,\r | |
2574 | TRUE\r | |
2575 | );\r | |
2576 | if (EncryptAlgorithm == PreferEncryptAlgorithm &&\r | |
2577 | EncryptKeylength == PreferEncryptKeylength &&\r | |
2578 | IntegrityAlgorithm == PreferIntegrityAlgorithm &&\r | |
2579 | IsSupportEsn == PreferIsSupportEsn \r | |
2580 | ) {\r | |
2581 | IsMatch = TRUE;\r | |
2582 | } else {\r | |
2583 | PreferEncryptAlgorithm = 0;\r | |
2584 | PreferIntegrityAlgorithm = 0;\r | |
2585 | IsSupportEsn = TRUE;\r | |
2586 | }\r | |
2587 | ProposalData = (IKEV2_PROPOSAL_DATA*)((UINT8*)(ProposalData + 1) + \r | |
2588 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA)); \r | |
2589 | }\r | |
2590 | \r | |
2591 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *)SaPayload->PayloadBuf + 1);\r | |
2592 | if (IsMatch) {\r | |
2593 | ChildSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
6b16c9e7 JW |
2594 | if (ChildSaSession->SessionCommon.SaParams == NULL) {\r |
2595 | return FALSE;\r | |
2596 | }\r | |
2597 | \r | |
9166f840 | 2598 | ChildSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r |
2599 | ChildSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2600 | ChildSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2601 | CopyMem (&ChildSaSession->RemotePeerSpi, ProposalData->Spi, sizeof (ChildSaSession->RemotePeerSpi));\r | |
2602 | \r | |
2603 | return TRUE;\r | |
2604 | }\r | |
2605 | }\r | |
2606 | return FALSE;\r | |
2607 | }\r | |
2608 | \r | |
2609 | /**\r | |
2610 | Generate Key buffer from fragments.\r | |
2611 | \r | |
2612 | If the digest length of specified HashAlgId is larger than or equal with the \r | |
2613 | required output key length, derive the key directly. Otherwise, Key Material \r | |
2614 | needs to be PRF-based concatenation according to 2.13 of RFC 4306: \r | |
2615 | prf+ (K,S) = T1 | T2 | T3 | T4 | ..., T1 = prf (K, S | 0x01),\r | |
2616 | T2 = prf (K, T1 | S | 0x02), T3 = prf (K, T2 | S | 0x03),T4 = prf (K, T3 | S | 0x04)\r | |
2617 | then derive the key from this key material.\r | |
2618 | \r | |
2619 | @param[in] HashAlgId The Hash Algorithm ID used to generate key.\r | |
2620 | @param[in] HashKey Pointer to a key buffer which contains hash key.\r | |
2621 | @param[in] HashKeyLength The length of HashKey in bytes.\r | |
2622 | @param[in, out] OutputKey Pointer to buffer which is used to receive the \r | |
2623 | output key.\r | |
2624 | @param[in] OutputKeyLength The length of OutPutKey buffer.\r | |
2625 | @param[in] Fragments Pointer to the data to be used to generate key.\r | |
2626 | @param[in] NumFragments The numbers of the Fragement.\r | |
2627 | \r | |
2628 | @retval EFI_SUCCESS The operation complete successfully.\r | |
2629 | @retval EFI_INVALID_PARAMETER If NumFragments is zero.\r | |
ce8e582c HW |
2630 | If the authentication algorithm given by HashAlgId\r |
2631 | cannot be found.\r | |
9166f840 | 2632 | @retval EFI_OUT_OF_RESOURCES If the required resource can't be allocated.\r |
2633 | @retval Others The operation is failed.\r | |
2634 | \r | |
2635 | **/\r | |
2636 | EFI_STATUS\r | |
2637 | Ikev2SaGenerateKey (\r | |
2638 | IN UINT8 HashAlgId,\r | |
2639 | IN UINT8 *HashKey,\r | |
2640 | IN UINTN HashKeyLength,\r | |
2641 | IN OUT UINT8 *OutputKey,\r | |
2642 | IN UINTN OutputKeyLength,\r | |
2643 | IN PRF_DATA_FRAGMENT *Fragments,\r | |
2644 | IN UINTN NumFragments\r | |
2645 | )\r | |
2646 | {\r | |
2647 | EFI_STATUS Status;\r | |
2648 | PRF_DATA_FRAGMENT LocalFragments[3];\r | |
2649 | UINT8 *Digest;\r | |
2650 | UINTN DigestSize;\r | |
2651 | UINTN Round;\r | |
2652 | UINTN Index;\r | |
2653 | UINTN AuthKeyLength;\r | |
2654 | UINTN FragmentsSize;\r | |
2655 | UINT8 TailData;\r | |
2656 | \r | |
2657 | Status = EFI_SUCCESS;\r | |
2658 | \r | |
2659 | if (NumFragments == 0) {\r | |
2660 | return EFI_INVALID_PARAMETER;\r | |
2661 | }\r | |
2662 | \r | |
2663 | LocalFragments[0].Data = NULL;\r | |
2664 | LocalFragments[1].Data = NULL;\r | |
2665 | LocalFragments[2].Data = NULL;\r | |
2666 | \r | |
2667 | AuthKeyLength = IpSecGetHmacDigestLength (HashAlgId);\r | |
ce8e582c HW |
2668 | if (AuthKeyLength == 0) {\r |
2669 | return EFI_INVALID_PARAMETER;\r | |
2670 | }\r | |
2671 | \r | |
9166f840 | 2672 | DigestSize = AuthKeyLength;\r |
2673 | Digest = AllocateZeroPool (AuthKeyLength);\r | |
2674 | \r | |
2675 | if (Digest == NULL) {\r | |
2676 | return EFI_OUT_OF_RESOURCES;\r | |
2677 | }\r | |
2678 | //\r | |
2679 | // If the required output key length is less than the digest size,\r | |
2680 | // copy the digest into OutputKey.\r | |
2681 | //\r | |
2682 | if (OutputKeyLength <= DigestSize) {\r | |
2683 | Status = IpSecCryptoIoHmac (\r | |
2684 | HashAlgId,\r | |
2685 | HashKey, \r | |
2686 | HashKeyLength, \r | |
2687 | (HASH_DATA_FRAGMENT *) Fragments, \r | |
2688 | NumFragments, \r | |
2689 | Digest, \r | |
2690 | DigestSize\r | |
2691 | );\r | |
2692 | if (EFI_ERROR (Status)) {\r | |
2693 | goto Exit;\r | |
2694 | }\r | |
2695 | \r | |
2696 | CopyMem (OutputKey, Digest, OutputKeyLength);\r | |
2697 | goto Exit;\r | |
2698 | }\r | |
2699 | \r | |
2700 | //\r | |
2701 | //Otherwise, Key Material need to be PRF-based concatenation according to 2.13\r | |
2702 | //of RFC 4306: prf+ (K,S) = T1 | T2 | T3 | T4 | ..., T1 = prf (K, S | 0x01),\r | |
2703 | //T2 = prf (K, T1 | S | 0x02), T3 = prf (K, T2 | S | 0x03),T4 = prf (K, T3 | S | 0x04)\r | |
2704 | //then derive the key from this key material.\r | |
2705 | //\r | |
2706 | FragmentsSize = 0;\r | |
2707 | for (Index = 0; Index < NumFragments; Index++) {\r | |
2708 | FragmentsSize = FragmentsSize + Fragments[Index].DataSize;\r | |
2709 | }\r | |
2710 | \r | |
2711 | LocalFragments[1].Data = AllocateZeroPool (FragmentsSize);\r | |
6b16c9e7 JW |
2712 | if (LocalFragments[1].Data == NULL) {\r |
2713 | Status = EFI_OUT_OF_RESOURCES;\r | |
2714 | goto Exit;\r | |
2715 | }\r | |
2716 | \r | |
9166f840 | 2717 | LocalFragments[1].DataSize = FragmentsSize;\r |
2718 | \r | |
2719 | //\r | |
2720 | // Copy all input fragments into LocalFragments[1];\r | |
2721 | //\r | |
2722 | FragmentsSize = 0;\r | |
2723 | for (Index = 0; Index < NumFragments; Index++) {\r | |
2724 | CopyMem (\r | |
2725 | LocalFragments[1].Data + FragmentsSize, \r | |
2726 | Fragments[Index].Data,\r | |
2727 | Fragments[Index].DataSize\r | |
2728 | );\r | |
2729 | FragmentsSize = FragmentsSize + Fragments[Index].DataSize;\r | |
2730 | }\r | |
2731 | \r | |
2732 | //\r | |
2733 | // Prepare 0x01 as the first tail data.\r | |
2734 | //\r | |
2735 | TailData = 0x01;\r | |
2736 | LocalFragments[2].Data = &TailData;\r | |
2737 | LocalFragments[2].DataSize = sizeof (TailData);\r | |
2738 | //\r | |
2739 | // Allocate buffer for the first fragment\r | |
2740 | //\r | |
2741 | LocalFragments[0].Data = AllocateZeroPool (AuthKeyLength);\r | |
6b16c9e7 JW |
2742 | if (LocalFragments[0].Data == NULL) {\r |
2743 | Status = EFI_OUT_OF_RESOURCES;\r | |
2744 | goto Exit;\r | |
2745 | }\r | |
2746 | \r | |
9166f840 | 2747 | LocalFragments[0].DataSize = AuthKeyLength;\r |
2748 | \r | |
2749 | Round = (OutputKeyLength - 1) / AuthKeyLength + 1;\r | |
2750 | for (Index = 0; Index < Round; Index++) {\r | |
2751 | Status = IpSecCryptoIoHmac (\r | |
2752 | HashAlgId, \r | |
2753 | HashKey, \r | |
2754 | HashKeyLength, \r | |
2755 | (HASH_DATA_FRAGMENT *)(Index == 0 ? &LocalFragments[1] : LocalFragments),\r | |
2756 | Index == 0 ? 2 : 3, \r | |
2757 | Digest,\r | |
2758 | DigestSize\r | |
2759 | );\r | |
2760 | if (EFI_ERROR(Status)) {\r | |
2761 | goto Exit;\r | |
2762 | }\r | |
2763 | CopyMem (\r | |
2764 | LocalFragments[0].Data, \r | |
2765 | Digest, \r | |
2766 | DigestSize\r | |
2767 | );\r | |
2768 | if (OutputKeyLength > DigestSize * (Index + 1)) {\r | |
2769 | CopyMem (\r | |
2770 | OutputKey + Index * DigestSize, \r | |
2771 | Digest, \r | |
2772 | DigestSize\r | |
2773 | );\r | |
2774 | LocalFragments[0].DataSize = DigestSize;\r | |
2775 | TailData ++;\r | |
2776 | } else {\r | |
2777 | // \r | |
2778 | // The last round\r | |
2779 | //\r | |
2780 | CopyMem (\r | |
2781 | OutputKey + Index * DigestSize, \r | |
2782 | Digest, \r | |
2783 | OutputKeyLength - Index * DigestSize\r | |
2784 | );\r | |
2785 | }\r | |
2786 | }\r | |
2787 | \r | |
2788 | Exit:\r | |
2789 | //\r | |
2790 | // Only First and second Framgement Data need to be freed.\r | |
2791 | //\r | |
2792 | for (Index = 0 ; Index < 2; Index++) {\r | |
2793 | if (LocalFragments[Index].Data != NULL) {\r | |
2794 | FreePool (LocalFragments[Index].Data);\r | |
2795 | }\r | |
2796 | }\r | |
2797 | if (Digest != NULL) {\r | |
2798 | FreePool (Digest);\r | |
2799 | }\r | |
2800 | return Status;\r | |
2801 | }\r | |
2802 | \r |