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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 |
f75a7f56 | 5 | Copyright (c) 2010 - 2018, 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 | |
f75a7f56 | 24 | IKEV2_TRANSFORM_ID_ENCR_AES_CBC,\r |
9166f840 | 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 | |
f75a7f56 | 72 | // BUGBUG: Message ID starts from 2 is to match the OpenSwan requirement, but it\r |
9166f840 | 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 | |
f75a7f56 | 146 | //\r |
9166f840 | 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 | |
f75a7f56 LG |
166 | // If TimerEvent creation failed, the SA will be alive untill user disable it or\r |
167 | // receiving a Delete Payload from peer.\r | |
9166f840 | 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 | |
f75a7f56 | 180 | \r |
9166f840 | 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 | |
f75a7f56 LG |
188 | // If SetTimer failed, the SA will be alive untill user disable it or\r |
189 | // receiving a Delete Payload from peer.\r | |
9166f840 | 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 | |
f75a7f56 LG |
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 | |
9166f840 | 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 | |
f75a7f56 | 264 | @retval Pointer to IKEV2_SA_SESSION with the specified remote IP address or NULL.\r |
9166f840 | 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 | |
9166f840 | 293 | \r |
294 | /**\r | |
f75a7f56 | 295 | Free specified Seession Common. The session common would belong to a IKE SA or\r |
9166f840 | 296 | a Child SA.\r |
297 | \r | |
298 | @param[in] SessionCommon Pointer to a Session Common.\r | |
299 | \r | |
300 | **/\r | |
301 | VOID\r | |
302 | Ikev2SaSessionCommonFree (\r | |
303 | IN IKEV2_SESSION_COMMON *SessionCommon\r | |
304 | )\r | |
305 | {\r | |
306 | \r | |
307 | ASSERT (SessionCommon != NULL);\r | |
308 | \r | |
309 | if (SessionCommon->LastSentPacket != NULL) {\r | |
310 | IkePacketFree (SessionCommon->LastSentPacket);\r | |
311 | }\r | |
312 | \r | |
313 | if (SessionCommon->SaParams != NULL) {\r | |
314 | FreePool (SessionCommon->SaParams);\r | |
315 | }\r | |
316 | if (SessionCommon->TimeoutEvent != NULL) {\r | |
317 | gBS->CloseEvent (SessionCommon->TimeoutEvent);\r | |
318 | }\r | |
319 | }\r | |
320 | \r | |
321 | /**\r | |
322 | After IKE/Child SA is estiblished, close the time event and free sent packet.\r | |
323 | \r | |
324 | @param[in] SessionCommon Pointer to a Session Common.\r | |
325 | \r | |
326 | **/\r | |
327 | VOID\r | |
328 | Ikev2SessionCommonRefresh (\r | |
329 | IN IKEV2_SESSION_COMMON *SessionCommon\r | |
330 | )\r | |
331 | {\r | |
332 | ASSERT (SessionCommon != NULL);\r | |
333 | \r | |
334 | gBS->CloseEvent (SessionCommon->TimeoutEvent);\r | |
335 | SessionCommon->TimeoutEvent = NULL;\r | |
336 | SessionCommon->TimeoutInterval = 0;\r | |
337 | SessionCommon->RetryCount = 0;\r | |
338 | if (SessionCommon->LastSentPacket != NULL) {\r | |
339 | IkePacketFree (SessionCommon->LastSentPacket);\r | |
340 | SessionCommon->LastSentPacket = NULL;\r | |
341 | }\r | |
342 | \r | |
343 | return ;\r | |
344 | }\r | |
345 | /**\r | |
f75a7f56 | 346 | Free specified IKEV2 SA Session.\r |
9166f840 | 347 | \r |
348 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION to be freed.\r | |
349 | \r | |
350 | **/\r | |
351 | VOID\r | |
352 | Ikev2SaSessionFree (\r | |
353 | IN IKEV2_SA_SESSION *IkeSaSession\r | |
354 | )\r | |
355 | {\r | |
356 | IKEV2_SESSION_KEYS *IkeKeys;\r | |
357 | LIST_ENTRY *Entry;\r | |
358 | IKEV2_CHILD_SA_SESSION *ChildSa;\r | |
359 | IKEV2_DH_BUFFER *DhBuffer;\r | |
360 | \r | |
361 | ASSERT (IkeSaSession != NULL);\r | |
f75a7f56 | 362 | \r |
9166f840 | 363 | //\r |
364 | // Delete Common Session\r | |
365 | //\r | |
366 | Ikev2SaSessionCommonFree (&IkeSaSession->SessionCommon);\r | |
367 | \r | |
368 | //\r | |
369 | // Delete ChildSaEstablish List and SAD\r | |
370 | //\r | |
371 | for (Entry = IkeSaSession->ChildSaEstablishSessionList.ForwardLink;\r | |
372 | Entry != &IkeSaSession->ChildSaEstablishSessionList;\r | |
373 | ) {\r | |
374 | \r | |
375 | ChildSa = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
376 | Entry = Entry->ForwardLink;\r | |
377 | Ikev2ChildSaSilentDelete (ChildSa->IkeSaSession, ChildSa->LocalPeerSpi);\r | |
378 | \r | |
379 | }\r | |
380 | \r | |
381 | //\r | |
382 | // Delete ChildSaSessionList\r | |
383 | //\r | |
384 | for ( Entry = IkeSaSession->ChildSaSessionList.ForwardLink;\r | |
385 | Entry != &IkeSaSession->ChildSaSessionList;\r | |
386 | ){\r | |
387 | ChildSa = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
388 | Entry = Entry->ForwardLink;\r | |
389 | RemoveEntryList (Entry->BackLink);\r | |
390 | Ikev2ChildSaSessionFree (ChildSa);\r | |
391 | }\r | |
392 | \r | |
393 | //\r | |
394 | // Delete DhBuffer and Keys\r | |
395 | //\r | |
396 | if (IkeSaSession->IkeKeys != NULL) {\r | |
397 | IkeKeys = IkeSaSession->IkeKeys;\r | |
398 | DhBuffer = IkeKeys->DhBuffer;\r | |
399 | \r | |
400 | //\r | |
401 | // Delete DhBuffer\r | |
402 | //\r | |
403 | Ikev2DhBufferFree (DhBuffer);\r | |
404 | \r | |
405 | //\r | |
406 | // Delete Keys\r | |
f75a7f56 | 407 | //\r |
9166f840 | 408 | if (IkeKeys->SkAiKey != NULL) {\r |
409 | FreePool (IkeKeys->SkAiKey);\r | |
410 | }\r | |
411 | if (IkeKeys->SkArKey != NULL) {\r | |
412 | FreePool (IkeKeys->SkArKey);\r | |
413 | }\r | |
414 | if (IkeKeys->SkdKey != NULL) {\r | |
415 | FreePool (IkeKeys->SkdKey);\r | |
416 | }\r | |
417 | if (IkeKeys->SkEiKey != NULL) {\r | |
418 | FreePool (IkeKeys->SkEiKey);\r | |
419 | }\r | |
420 | if (IkeKeys->SkErKey != NULL) {\r | |
421 | FreePool (IkeKeys->SkErKey);\r | |
422 | }\r | |
423 | if (IkeKeys->SkPiKey != NULL) {\r | |
424 | FreePool (IkeKeys->SkPiKey);\r | |
425 | }\r | |
426 | if (IkeKeys->SkPrKey != NULL) {\r | |
427 | FreePool (IkeKeys->SkPrKey);\r | |
428 | }\r | |
429 | FreePool (IkeKeys);\r | |
430 | }\r | |
431 | \r | |
432 | if (IkeSaSession->SaData != NULL) {\r | |
433 | FreePool (IkeSaSession->SaData);\r | |
434 | }\r | |
435 | \r | |
436 | if (IkeSaSession->NiBlock != NULL) {\r | |
437 | FreePool (IkeSaSession->NiBlock);\r | |
438 | }\r | |
439 | \r | |
440 | if (IkeSaSession->NrBlock != NULL) {\r | |
441 | FreePool (IkeSaSession->NrBlock);\r | |
442 | }\r | |
443 | \r | |
444 | if (IkeSaSession->NCookie != NULL) {\r | |
445 | FreePool (IkeSaSession->NCookie);\r | |
446 | }\r | |
447 | \r | |
448 | if (IkeSaSession->InitPacket != NULL) {\r | |
449 | FreePool (IkeSaSession->InitPacket);\r | |
450 | }\r | |
451 | \r | |
452 | if (IkeSaSession->RespPacket != NULL) {\r | |
453 | FreePool (IkeSaSession->RespPacket);\r | |
454 | }\r | |
455 | \r | |
456 | FreePool (IkeSaSession);\r | |
457 | \r | |
458 | return ;\r | |
459 | }\r | |
460 | \r | |
461 | /**\r | |
462 | Increase the MessageID in IkeSaSession.\r | |
463 | \r | |
464 | @param[in] IkeSaSession Pointer to a specified IKEV2_SA_SESSION.\r | |
465 | \r | |
466 | **/\r | |
467 | VOID\r | |
468 | Ikev2SaSessionIncreaseMessageId (\r | |
469 | IN IKEV2_SA_SESSION *IkeSaSession\r | |
470 | )\r | |
471 | {\r | |
472 | if (IkeSaSession->MessageId < 0xffffffff) {\r | |
473 | IkeSaSession->MessageId ++;\r | |
474 | } else {\r | |
475 | //\r | |
476 | // TODO: Trigger Rekey process.\r | |
477 | //\r | |
478 | }\r | |
479 | }\r | |
480 | \r | |
481 | /**\r | |
482 | Allocate memory for IKEV2 Child SA Session.\r | |
f75a7f56 | 483 | \r |
9166f840 | 484 | @param[in] UdpService Pointer to IKE_UDP_SERVICE.\r |
f75a7f56 | 485 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION related to this Child SA\r |
9166f840 | 486 | Session.\r |
487 | \r | |
488 | @retval Pointer of a new created IKEV2 Child SA Session or NULL.\r | |
489 | \r | |
490 | **/\r | |
491 | IKEV2_CHILD_SA_SESSION *\r | |
492 | Ikev2ChildSaSessionAlloc (\r | |
493 | IN IKE_UDP_SERVICE *UdpService,\r | |
494 | IN IKEV2_SA_SESSION *IkeSaSession\r | |
495 | )\r | |
496 | {\r | |
497 | EFI_STATUS Status;\r | |
498 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
499 | IKEV2_SESSION_COMMON *ChildSaCommon;\r | |
500 | IKEV2_SESSION_COMMON *SaCommon;\r | |
501 | \r | |
502 | ChildSaSession = AllocateZeroPool (sizeof (IKEV2_CHILD_SA_SESSION));\r | |
503 | if (ChildSaSession == NULL) {\r | |
504 | return NULL;\r | |
505 | }\r | |
506 | \r | |
507 | //\r | |
508 | // Initialize the fields of ChildSaSession and its SessionCommon.\r | |
509 | //\r | |
510 | ChildSaSession->Signature = IKEV2_CHILD_SA_SESSION_SIGNATURE;\r | |
511 | ChildSaSession->IkeSaSession = IkeSaSession;\r | |
512 | ChildSaSession->MessageId = IkeSaSession->MessageId;\r | |
96c13c01 JW |
513 | \r |
514 | //\r | |
515 | // Generate an new SPI.\r | |
516 | //\r | |
517 | Status = IkeGenerateSpi (IkeSaSession, &(ChildSaSession->LocalPeerSpi));\r | |
518 | if (EFI_ERROR (Status)) {\r | |
519 | FreePool (ChildSaSession);\r | |
520 | return NULL;\r | |
521 | }\r | |
f75a7f56 | 522 | \r |
9166f840 | 523 | ChildSaCommon = &ChildSaSession->SessionCommon;\r |
524 | ChildSaCommon->UdpService = UdpService;\r | |
525 | ChildSaCommon->Private = IkeSaSession->SessionCommon.Private;\r | |
526 | ChildSaCommon->IkeSessionType = IkeSessionTypeChildSa;\r | |
527 | ChildSaCommon->IkeVer = 2;\r | |
528 | ChildSaCommon->AfterEncodePayload = Ikev2ChildSaAfterEncodePayload;\r | |
529 | ChildSaCommon->BeforeDecodePayload = Ikev2ChildSaBeforeDecodePayload;\r | |
530 | SaCommon = &ChildSaSession->IkeSaSession->SessionCommon;\r | |
531 | \r | |
532 | //\r | |
533 | // Create a resend notfiy event for retry.\r | |
534 | //\r | |
535 | Status = gBS->CreateEvent (\r | |
536 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
537 | TPL_CALLBACK,\r | |
538 | Ikev2ResendNotify,\r | |
539 | ChildSaCommon,\r | |
540 | &ChildSaCommon->TimeoutEvent\r | |
541 | );\r | |
542 | if (EFI_ERROR (Status)) {\r | |
543 | FreePool (ChildSaSession);\r | |
544 | return NULL;\r | |
545 | }\r | |
546 | \r | |
547 | CopyMem (&ChildSaCommon->LocalPeerIp, &SaCommon->LocalPeerIp, sizeof (EFI_IP_ADDRESS));\r | |
548 | CopyMem (&ChildSaCommon->RemotePeerIp, &SaCommon->RemotePeerIp, sizeof (EFI_IP_ADDRESS));\r | |
549 | \r | |
550 | return ChildSaSession;\r | |
551 | }\r | |
552 | \r | |
553 | /**\r | |
f75a7f56 LG |
554 | Register a established IKEv2 Child SA into IkeSaSession->ChildSaEstablishSessionList.\r |
555 | If the there is IKEV2_CHILD_SA_SESSION with same remote peer IP, remove the old one\r | |
9166f840 | 556 | then register the new one.\r |
557 | \r | |
558 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION to be registered.\r | |
559 | @param[in] Private Pointer to IPSEC_PRAVATE_DATA.\r | |
560 | \r | |
561 | **/\r | |
562 | VOID\r | |
563 | Ikev2ChildSaSessionReg (\r | |
564 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession,\r | |
565 | IN IPSEC_PRIVATE_DATA *Private\r | |
566 | )\r | |
567 | {\r | |
568 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
569 | IKEV2_CHILD_SA_SESSION *OldChildSaSession;\r | |
570 | IKEV2_SA_SESSION *IkeSaSession;\r | |
9166f840 | 571 | EFI_STATUS Status;\r |
572 | UINT64 Lifetime;\r | |
573 | \r | |
574 | //\r | |
575 | // Keep the IKE SA exclusive.\r | |
576 | //\r | |
577 | SessionCommon = &ChildSaSession->SessionCommon;\r | |
578 | IkeSaSession = ChildSaSession->IkeSaSession;\r | |
579 | OldChildSaSession = Ikev2ChildSaSessionRemove (\r | |
580 | &IkeSaSession->ChildSaEstablishSessionList,\r | |
581 | ChildSaSession->LocalPeerSpi,\r | |
582 | IKEV2_ESTABLISHED_CHILDSA_LIST\r | |
583 | );\r | |
584 | if (OldChildSaSession != NULL) {\r | |
585 | //\r | |
586 | // Free the old one.\r | |
587 | //\r | |
588 | Ikev2ChildSaSessionFree (OldChildSaSession);\r | |
589 | }\r | |
590 | \r | |
591 | //\r | |
592 | // Store the ready child SA into SAD.\r | |
593 | //\r | |
594 | Ikev2StoreSaData (ChildSaSession);\r | |
595 | \r | |
596 | //\r | |
597 | // Cleanup the fields of SessionCommon for processing.\r | |
f75a7f56 | 598 | //\r |
9166f840 | 599 | Ikev2SessionCommonRefresh (SessionCommon);\r |
f75a7f56 | 600 | \r |
9166f840 | 601 | //\r |
602 | // Insert the ready child SA session into established list.\r | |
603 | //\r | |
604 | Ikev2ChildSaSessionInsert (&IkeSaSession->ChildSaEstablishSessionList, ChildSaSession);\r | |
605 | \r | |
606 | //\r | |
607 | // Create a Notify event for the IKE SA life time counting.\r | |
608 | //\r | |
609 | Status = gBS->CreateEvent (\r | |
610 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
611 | TPL_CALLBACK,\r | |
612 | Ikev2LifetimeNotify,\r | |
613 | SessionCommon,\r | |
614 | &SessionCommon->TimeoutEvent\r | |
615 | );\r | |
616 | if (EFI_ERROR(Status)){\r | |
617 | return ;\r | |
618 | }\r | |
619 | \r | |
620 | //\r | |
621 | // Start to count the lifetime of the IKE SA.\r | |
622 | //\r | |
9166f840 | 623 | if (ChildSaSession->Spd->Data->ProcessingPolicy->SaLifetime.HardLifetime != 0){\r |
624 | Lifetime = ChildSaSession->Spd->Data->ProcessingPolicy->SaLifetime.HardLifetime;\r | |
625 | } else {\r | |
626 | Lifetime = CHILD_SA_DEFAULT_LIFETIME;\r | |
627 | }\r | |
628 | \r | |
629 | Status = gBS->SetTimer (\r | |
630 | SessionCommon->TimeoutEvent,\r | |
631 | TimerRelative,\r | |
632 | MultU64x32(Lifetime, 10000000) // ms->100ns\r | |
633 | );\r | |
634 | if (EFI_ERROR(Status)){\r | |
635 | return ;\r | |
636 | }\r | |
637 | \r | |
638 | DEBUG ((\r | |
639 | DEBUG_INFO,\r | |
640 | "\n------ChildSa established and start to count down %d seconds lifetime\n",\r | |
641 | Lifetime\r | |
642 | ));\r | |
643 | \r | |
644 | return ;\r | |
645 | }\r | |
646 | \r | |
9166f840 | 647 | \r |
648 | /**\r | |
649 | This function find the Child SA by the specified SPI.\r | |
44de1013 HT |
650 | \r |
651 | This functin find a ChildSA session by searching the ChildSaSessionlist of\r | |
9166f840 | 652 | the input IKEV2_SA_SESSION by specified MessageID.\r |
f75a7f56 | 653 | \r |
9166f840 | 654 | @param[in] SaSessionList Pointer to List to be searched.\r |
655 | @param[in] Spi Specified SPI.\r | |
44de1013 | 656 | \r |
9166f840 | 657 | @return Pointer to IKEV2_CHILD_SA_SESSION or NULL.\r |
658 | \r | |
659 | **/\r | |
660 | IKEV2_CHILD_SA_SESSION *\r | |
661 | Ikev2ChildSaSessionLookupBySpi (\r | |
662 | IN LIST_ENTRY *SaSessionList,\r | |
663 | IN UINT32 Spi\r | |
664 | )\r | |
665 | {\r | |
666 | LIST_ENTRY *Entry;\r | |
667 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
44de1013 | 668 | \r |
9166f840 | 669 | NET_LIST_FOR_EACH (Entry, SaSessionList) {\r |
670 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
44de1013 | 671 | \r |
9166f840 | 672 | if (ChildSaSession->RemotePeerSpi == Spi || ChildSaSession->LocalPeerSpi == Spi) {\r |
44de1013 HT |
673 | return ChildSaSession;\r |
674 | }\r | |
675 | }\r | |
9166f840 | 676 | \r |
677 | return NULL;\r | |
678 | }\r | |
679 | \r | |
680 | /**\r | |
681 | Insert a Child SA Session into the specified ChildSa list.\r | |
682 | \r | |
683 | @param[in] SaSessionList Pointer to list to be inserted in.\r | |
684 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION to be inserted.\r | |
685 | \r | |
686 | **/\r | |
687 | VOID\r | |
688 | Ikev2ChildSaSessionInsert (\r | |
689 | IN LIST_ENTRY *SaSessionList,\r | |
690 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
691 | )\r | |
692 | {\r | |
693 | InsertTailList (SaSessionList, &ChildSaSession->ByIkeSa);\r | |
694 | }\r | |
695 | \r | |
696 | /**\r | |
697 | Remove the IKEV2_CHILD_SA_SESSION from IkeSaSessionList.\r | |
f75a7f56 | 698 | \r |
9166f840 | 699 | @param[in] SaSessionList The SA Session List to be iterated.\r |
700 | @param[in] Spi Spi used to identified the IKEV2_CHILD_SA_SESSION.\r | |
f75a7f56 LG |
701 | @param[in] ListType The type of the List to indicate whether it is a\r |
702 | Established.\r | |
9166f840 | 703 | \r |
704 | @return The point to IKEV2_CHILD_SA_SESSION or NULL.\r | |
f75a7f56 | 705 | \r |
9166f840 | 706 | **/\r |
707 | IKEV2_CHILD_SA_SESSION *\r | |
708 | Ikev2ChildSaSessionRemove (\r | |
709 | IN LIST_ENTRY *SaSessionList,\r | |
f75a7f56 | 710 | IN UINT32 Spi,\r |
9166f840 | 711 | IN UINT8 ListType\r |
712 | )\r | |
713 | {\r | |
714 | LIST_ENTRY *Entry;\r | |
715 | LIST_ENTRY *NextEntry;\r | |
716 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
717 | \r | |
718 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, SaSessionList) {\r | |
f75a7f56 | 719 | \r |
9166f840 | 720 | if (ListType == IKEV2_ESTABLISHED_CHILDSA_LIST || ListType == IKEV2_ESTABLISHING_CHILDSA_LIST) {\r |
721 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
722 | } else if (ListType == IKEV2_DELET_CHILDSA_LIST) {\r | |
723 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_DEL_SA (Entry);\r | |
724 | } else {\r | |
725 | return NULL;\r | |
726 | }\r | |
727 | \r | |
728 | if (ChildSaSession->RemotePeerSpi == Spi || ChildSaSession->LocalPeerSpi == Spi) {\r | |
729 | RemoveEntryList (Entry);\r | |
730 | return ChildSaSession;\r | |
731 | }\r | |
732 | }\r | |
733 | \r | |
734 | return NULL;\r | |
735 | }\r | |
736 | \r | |
9166f840 | 737 | /**\r |
f75a7f56 | 738 | Free the memory located for the specified IKEV2_CHILD_SA_SESSION.\r |
9166f840 | 739 | \r |
740 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION.\r | |
741 | \r | |
742 | **/\r | |
743 | VOID\r | |
744 | Ikev2ChildSaSessionFree (\r | |
745 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
746 | )\r | |
747 | {\r | |
748 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
749 | \r | |
750 | SessionCommon = &ChildSaSession->SessionCommon;\r | |
751 | if (ChildSaSession->SaData != NULL) {\r | |
752 | FreePool (ChildSaSession->SaData);\r | |
753 | }\r | |
754 | \r | |
755 | if (ChildSaSession->NiBlock != NULL) {\r | |
756 | FreePool (ChildSaSession->NiBlock);\r | |
757 | }\r | |
758 | \r | |
759 | if (ChildSaSession->NrBlock != NULL) {\r | |
760 | FreePool (ChildSaSession->NrBlock);\r | |
761 | }\r | |
762 | \r | |
763 | if (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.AuthKey != NULL) {\r | |
764 | FreePool (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.AuthKey);\r | |
765 | }\r | |
766 | \r | |
767 | if (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.EncKey != NULL) {\r | |
768 | FreePool (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.EncKey);\r | |
769 | }\r | |
770 | \r | |
771 | if (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.AuthKey != NULL) {\r | |
772 | FreePool (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.AuthKey);\r | |
773 | }\r | |
774 | \r | |
775 | if (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.EncKey != NULL) {\r | |
776 | FreePool (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.EncKey);\r | |
777 | }\r | |
778 | \r | |
779 | //\r | |
780 | // Delete DhBuffer\r | |
781 | //\r | |
782 | Ikev2DhBufferFree (ChildSaSession->DhBuffer);\r | |
783 | \r | |
784 | //\r | |
785 | // Delete SpdSelector\r | |
786 | //\r | |
787 | if (ChildSaSession->SpdSelector != NULL) {\r | |
788 | if (ChildSaSession->SpdSelector->LocalAddress != NULL) {\r | |
789 | FreePool (ChildSaSession->SpdSelector->LocalAddress);\r | |
790 | }\r | |
791 | if (ChildSaSession->SpdSelector->RemoteAddress != NULL) {\r | |
792 | FreePool (ChildSaSession->SpdSelector->RemoteAddress);\r | |
793 | }\r | |
794 | FreePool (ChildSaSession->SpdSelector);\r | |
795 | }\r | |
796 | Ikev2SaSessionCommonFree (SessionCommon);\r | |
797 | FreePool (ChildSaSession);\r | |
798 | \r | |
799 | return ;\r | |
800 | }\r | |
801 | \r | |
802 | /**\r | |
803 | Delete the specified established Child SA.\r | |
804 | \r | |
805 | This function delete the Child SA directly and don't send the Information Packet to\r | |
806 | remote peer.\r | |
807 | \r | |
808 | @param[in] IkeSaSession Pointer to a IKE SA Session used to be searched for.\r | |
809 | @param[in] Spi SPI used to find the Child SA.\r | |
810 | \r | |
811 | @retval EFI_NOT_FOUND Pointer of IKE SA Session is NULL.\r | |
812 | @retval EFI_NOT_FOUND There is no specified Child SA related with the input\r | |
813 | SPI under this IKE SA Session.\r | |
814 | @retval EFI_SUCCESS Delete the Child SA successfully.\r | |
815 | \r | |
816 | **/\r | |
817 | EFI_STATUS\r | |
818 | Ikev2ChildSaSilentDelete (\r | |
819 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
820 | IN UINT32 Spi\r | |
821 | )\r | |
822 | {\r | |
823 | EFI_STATUS Status;\r | |
824 | EFI_IPSEC_CONFIG_SELECTOR *Selector;\r | |
825 | UINTN SelectorSize;\r | |
826 | BOOLEAN IsLocalFound;\r | |
827 | BOOLEAN IsRemoteFound;\r | |
828 | UINT32 LocalSpi;\r | |
829 | UINT32 RemoteSpi;\r | |
830 | IKEV2_CHILD_SA_SESSION *ChildSession;\r | |
831 | EFI_IPSEC_CONFIG_SELECTOR *LocalSelector;\r | |
832 | EFI_IPSEC_CONFIG_SELECTOR *RemoteSelector;\r | |
9166f840 | 833 | IPSEC_PRIVATE_DATA *Private;\r |
834 | \r | |
835 | if (IkeSaSession == NULL) {\r | |
836 | return EFI_NOT_FOUND;\r | |
837 | }\r | |
838 | \r | |
839 | IsLocalFound = FALSE;\r | |
840 | IsRemoteFound = FALSE;\r | |
841 | ChildSession = NULL;\r | |
842 | LocalSelector = NULL;\r | |
843 | RemoteSelector = NULL;\r | |
9166f840 | 844 | \r |
5dd08a46 | 845 | Private = IkeSaSession->SessionCommon.Private;\r |
9166f840 | 846 | \r |
847 | //\r | |
848 | // Remove the Established SA from ChildSaEstablishlist.\r | |
849 | //\r | |
850 | ChildSession = Ikev2ChildSaSessionRemove(\r | |
851 | &(IkeSaSession->ChildSaEstablishSessionList),\r | |
f75a7f56 | 852 | Spi,\r |
9166f840 | 853 | IKEV2_ESTABLISHED_CHILDSA_LIST\r |
854 | );\r | |
855 | if (ChildSession == NULL) {\r | |
856 | return EFI_NOT_FOUND;\r | |
857 | }\r | |
858 | \r | |
859 | LocalSpi = ChildSession->LocalPeerSpi;\r | |
860 | RemoteSpi = ChildSession->RemotePeerSpi;\r | |
f75a7f56 | 861 | \r |
9166f840 | 862 | SelectorSize = sizeof (EFI_IPSEC_CONFIG_SELECTOR);\r |
863 | Selector = AllocateZeroPool (SelectorSize);\r | |
6b16c9e7 JW |
864 | if (Selector == NULL) {\r |
865 | return EFI_OUT_OF_RESOURCES;\r | |
866 | }\r | |
9166f840 | 867 | \r |
868 | while (1) {\r | |
869 | Status = EfiIpSecConfigGetNextSelector (\r | |
870 | &Private->IpSecConfig,\r | |
871 | IPsecConfigDataTypeSad,\r | |
872 | &SelectorSize,\r | |
873 | Selector\r | |
874 | );\r | |
875 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
876 | FreePool (Selector);\r | |
877 | \r | |
878 | Selector = AllocateZeroPool (SelectorSize);\r | |
6b16c9e7 JW |
879 | if (Selector == NULL) {\r |
880 | Status = EFI_OUT_OF_RESOURCES;\r | |
881 | break;\r | |
882 | }\r | |
f75a7f56 | 883 | \r |
9166f840 | 884 | Status = EfiIpSecConfigGetNextSelector (\r |
885 | &Private->IpSecConfig,\r | |
886 | IPsecConfigDataTypeSad,\r | |
887 | &SelectorSize,\r | |
888 | Selector\r | |
889 | );\r | |
890 | }\r | |
891 | \r | |
892 | if (EFI_ERROR (Status)) {\r | |
893 | break;\r | |
894 | }\r | |
895 | \r | |
896 | if (Selector->SaId.Spi == RemoteSpi) {\r | |
897 | //\r | |
898 | // SPI is unique. There is only one SAD whose SPI is\r | |
899 | // same with RemoteSpi.\r | |
900 | //\r | |
901 | IsRemoteFound = TRUE;\r | |
902 | RemoteSelector = AllocateZeroPool (SelectorSize);\r | |
6b16c9e7 JW |
903 | if (RemoteSelector == NULL) {\r |
904 | Status = EFI_OUT_OF_RESOURCES;\r | |
905 | break;\r | |
906 | }\r | |
f75a7f56 | 907 | \r |
9166f840 | 908 | CopyMem (RemoteSelector, Selector, SelectorSize);\r |
909 | }\r | |
910 | \r | |
911 | if (Selector->SaId.Spi == LocalSpi) {\r | |
912 | //\r | |
913 | // SPI is unique. There is only one SAD whose SPI is\r | |
914 | // same with LocalSpi.\r | |
915 | //\r | |
916 | IsLocalFound = TRUE;\r | |
917 | LocalSelector = AllocateZeroPool (SelectorSize);\r | |
6b16c9e7 JW |
918 | if (LocalSelector == NULL) {\r |
919 | Status = EFI_OUT_OF_RESOURCES;\r | |
920 | break;\r | |
921 | }\r | |
f75a7f56 | 922 | \r |
9166f840 | 923 | CopyMem (LocalSelector, Selector, SelectorSize);\r |
924 | }\r | |
925 | }\r | |
926 | //\r | |
927 | // Delete SA from the Variable.\r | |
928 | //\r | |
929 | if (IsLocalFound) {\r | |
930 | Status = EfiIpSecConfigSetData (\r | |
931 | &Private->IpSecConfig,\r | |
932 | IPsecConfigDataTypeSad,\r | |
933 | LocalSelector,\r | |
934 | NULL,\r | |
935 | NULL\r | |
936 | );\r | |
937 | }\r | |
938 | \r | |
939 | if (IsRemoteFound) {\r | |
940 | Status = EfiIpSecConfigSetData (\r | |
941 | &Private->IpSecConfig,\r | |
942 | IPsecConfigDataTypeSad,\r | |
943 | RemoteSelector,\r | |
944 | NULL,\r | |
945 | NULL\r | |
946 | );\r | |
947 | \r | |
948 | }\r | |
949 | \r | |
950 | DEBUG (\r | |
951 | (DEBUG_INFO,\r | |
952 | "\n------IKEV2 deleted ChildSa(local spi, remote spi):(0x%x, 0x%x)------\n",\r | |
953 | LocalSpi,\r | |
954 | RemoteSpi)\r | |
955 | );\r | |
956 | Ikev2ChildSaSessionFree (ChildSession);\r | |
957 | \r | |
958 | if (RemoteSelector != NULL) {\r | |
959 | FreePool (RemoteSelector);\r | |
960 | }\r | |
961 | \r | |
962 | if (LocalSelector != NULL) {\r | |
963 | FreePool (LocalSelector);\r | |
964 | }\r | |
965 | \r | |
966 | if (Selector != NULL) {\r | |
967 | FreePool (Selector);\r | |
968 | }\r | |
969 | \r | |
970 | return Status;\r | |
971 | }\r | |
972 | \r | |
973 | /**\r | |
974 | Free the specified DhBuffer.\r | |
975 | \r | |
976 | @param[in] DhBuffer Pointer to IKEV2_DH_BUFFER to be freed.\r | |
f75a7f56 | 977 | \r |
9166f840 | 978 | **/\r |
979 | VOID\r | |
980 | Ikev2DhBufferFree (\r | |
981 | IKEV2_DH_BUFFER *DhBuffer\r | |
f75a7f56 | 982 | )\r |
9166f840 | 983 | {\r |
984 | if (DhBuffer != NULL) {\r | |
985 | if (DhBuffer->GxBuffer != NULL) {\r | |
986 | FreePool (DhBuffer->GxBuffer);\r | |
987 | }\r | |
988 | if (DhBuffer->GyBuffer != NULL) {\r | |
989 | FreePool (DhBuffer->GyBuffer);\r | |
990 | }\r | |
991 | if (DhBuffer->GxyBuffer != NULL) {\r | |
992 | FreePool (DhBuffer->GxyBuffer);\r | |
993 | }\r | |
994 | if (DhBuffer->DhContext != NULL) {\r | |
995 | IpSecCryptoIoFreeDh (&DhBuffer->DhContext);\r | |
996 | }\r | |
997 | FreePool (DhBuffer);\r | |
998 | }\r | |
999 | }\r | |
1000 | \r | |
1001 | /**\r | |
1002 | This function is to parse a request IKE packet and return its request type.\r | |
f75a7f56 | 1003 | The request type is one of IKE CHILD SA creation, IKE SA rekeying and\r |
9166f840 | 1004 | IKE CHILD SA rekeying.\r |
1005 | \r | |
1006 | @param[in] IkePacket IKE packet to be prased.\r | |
1007 | \r | |
1008 | return the type of the IKE packet.\r | |
1009 | \r | |
1010 | **/\r | |
1011 | IKEV2_CREATE_CHILD_REQUEST_TYPE\r | |
1012 | Ikev2ChildExchangeRequestType(\r | |
1013 | IN IKE_PACKET *IkePacket\r | |
1014 | )\r | |
1015 | {\r | |
1016 | BOOLEAN Flag;\r | |
1017 | LIST_ENTRY *Entry;\r | |
1018 | IKE_PAYLOAD *IkePayload;\r | |
1019 | \r | |
1020 | Flag = FALSE;\r | |
1021 | \r | |
1022 | NET_LIST_FOR_EACH (Entry, &(IkePacket)->PayloadList) {\r | |
1023 | IkePayload = IKE_PAYLOAD_BY_PACKET (Entry);\r | |
1024 | if (IkePayload->PayloadType == IKEV2_PAYLOAD_TYPE_TS_INIT) {\r | |
1025 | //\r | |
1026 | // Packet with Ts Payload means it is for either CHILD_SA_CREATE or CHILD_SA_REKEY.\r | |
1027 | //\r | |
1028 | Flag = TRUE;\r | |
1029 | }\r | |
f75a7f56 | 1030 | if (IkePayload->PayloadType == IKEV2_PAYLOAD_TYPE_NOTIFY) {\r |
9166f840 | 1031 | if (((IKEV2_NOTIFY*)IkePayload)->MessageType == IKEV2_NOTIFICATION_REKEY_SA) {\r |
1032 | //\r | |
f75a7f56 | 1033 | // If notify payload with REKEY_SA message type, the IkePacket is for\r |
9166f840 | 1034 | // rekeying Child SA.\r |
1035 | //\r | |
1036 | return IkeRequestTypeRekeyChildSa;\r | |
1037 | }\r | |
1038 | }\r | |
1039 | };\r | |
1040 | \r | |
1041 | if (!Flag){\r | |
1042 | //\r | |
1043 | // The Create Child Exchange is for IKE SA rekeying.\r | |
1044 | //\r | |
1045 | return IkeRequestTypeRekeyIkeSa;\r | |
1046 | } else {\r | |
1047 | //\r | |
f75a7f56 | 1048 | // If the Notify payloaad with transport mode message type, the IkePacket is\r |
9166f840 | 1049 | // for create Child SA.\r |
1050 | //\r | |
1051 | return IkeRequestTypeCreateChildSa;\r | |
1052 | }\r | |
1053 | }\r | |
1054 | \r | |
1055 | /**\r | |
1056 | Associate a SPD selector to the Child SA Session.\r | |
1057 | \r | |
f75a7f56 | 1058 | This function is called when the Child SA is not the first child SA of its\r |
9166f840 | 1059 | IKE SA. It associate a SPD to this Child SA.\r |
1060 | \r | |
f75a7f56 | 1061 | @param[in, out] ChildSaSession Pointer to the Child SA Session to be associated to\r |
9166f840 | 1062 | a SPD selector.\r |
1063 | \r | |
1064 | @retval EFI_SUCCESS Associate one SPD selector to this Child SA Session successfully.\r | |
1065 | @retval EFI_NOT_FOUND Can't find the related SPD selector.\r | |
1066 | \r | |
1067 | **/\r | |
1068 | EFI_STATUS\r | |
1069 | Ikev2ChildSaAssociateSpdEntry (\r | |
1070 | IN OUT IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
1071 | )\r | |
1072 | {\r | |
1073 | IpSecVisitConfigData (IPsecConfigDataTypeSpd, Ikev2MatchSpdEntry, ChildSaSession);\r | |
1074 | if (ChildSaSession->Spd != NULL) {\r | |
1075 | return EFI_SUCCESS;\r | |
1076 | } else {\r | |
1077 | return EFI_NOT_FOUND;\r | |
1078 | }\r | |
1079 | }\r | |
1080 | \r | |
1081 | \r | |
9166f840 | 1082 | \r |
1083 | /**\r | |
1084 | Validate the IKE header of received IKE packet.\r | |
1085 | \r | |
1086 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION related to this IKE packet.\r | |
1087 | @param[in] IkeHdr Pointer to IKE header of received IKE packet.\r | |
1088 | \r | |
1089 | @retval TRUE If the IKE header is valid.\r | |
1090 | @retval FALSE If the IKE header is invalid.\r | |
1091 | \r | |
1092 | **/\r | |
1093 | BOOLEAN\r | |
1094 | Ikev2ValidateHeader (\r | |
1095 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
1096 | IN IKE_HEADER *IkeHdr\r | |
1097 | )\r | |
1098 | {\r | |
1099 | \r | |
1100 | IKEV2_SESSION_STATE State;\r | |
1101 | \r | |
1102 | State = IkeSaSession->SessionCommon.State;\r | |
1103 | if (State == IkeStateInit) {\r | |
1104 | //\r | |
1105 | // For the IKE Initial Exchange, the MessagId should be zero.\r | |
1106 | //\r | |
1107 | if (IkeHdr->MessageId != 0) {\r | |
1108 | return FALSE;\r | |
1109 | }\r | |
1110 | } else {\r | |
1111 | if (State == IkeStateAuth) {\r | |
1112 | if (IkeHdr->MessageId != 1) {\r | |
1113 | return FALSE;\r | |
1114 | }\r | |
1115 | }\r | |
1116 | if (IkeHdr->InitiatorCookie != IkeSaSession->InitiatorCookie ||\r | |
1117 | IkeHdr->ResponderCookie != IkeSaSession->ResponderCookie\r | |
1118 | ) {\r | |
1119 | //\r | |
1120 | // TODO: send notification INVALID-COOKIE\r | |
1121 | //\r | |
1122 | return FALSE;\r | |
1123 | }\r | |
1124 | }\r | |
1125 | \r | |
1126 | //\r | |
1127 | // Information Exchagne and Create Child Exchange can be started from each part.\r | |
1128 | //\r | |
f75a7f56 | 1129 | if (IkeHdr->ExchangeType != IKEV2_EXCHANGE_TYPE_INFO &&\r |
9166f840 | 1130 | IkeHdr->ExchangeType != IKEV2_EXCHANGE_TYPE_CREATE_CHILD\r |
1131 | ) {\r | |
1132 | if (IkeSaSession->SessionCommon.IsInitiator) {\r | |
1133 | if (IkeHdr->InitiatorCookie != IkeSaSession->InitiatorCookie) {\r | |
1134 | //\r | |
1135 | // TODO: send notification INVALID-COOKIE\r | |
1136 | //\r | |
1137 | return FALSE;\r | |
1138 | }\r | |
1139 | if (IkeHdr->Flags != IKE_HEADER_FLAGS_RESPOND) {\r | |
1140 | return FALSE;\r | |
1141 | }\r | |
1142 | } else {\r | |
1143 | if (IkeHdr->Flags != IKE_HEADER_FLAGS_INIT) {\r | |
1144 | return FALSE;\r | |
1145 | }\r | |
1146 | }\r | |
1147 | }\r | |
1148 | \r | |
1149 | return TRUE;\r | |
1150 | }\r | |
1151 | \r | |
1152 | /**\r | |
1153 | Create and intialize IKEV2_SA_DATA for speicifed IKEV2_SESSION_COMMON.\r | |
1154 | \r | |
1155 | This function will be only called by the initiator. The responder's IKEV2_SA_DATA\r | |
1156 | will be generated during parsed the initiator packet.\r | |
1157 | \r | |
1158 | @param[in] SessionCommon Pointer to IKEV2_SESSION_COMMON related to.\r | |
1159 | \r | |
1160 | @retval a Pointer to a new IKEV2_SA_DATA or NULL.\r | |
1161 | \r | |
1162 | **/\r | |
1163 | IKEV2_SA_DATA *\r | |
1164 | Ikev2InitializeSaData (\r | |
1165 | IN IKEV2_SESSION_COMMON *SessionCommon\r | |
1166 | )\r | |
1167 | {\r | |
1168 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1169 | IKEV2_SA_DATA *SaData;\r | |
1170 | IKEV2_PROPOSAL_DATA *ProposalData;\r | |
1171 | IKEV2_TRANSFORM_DATA *TransformData;\r | |
1172 | IKE_SA_ATTRIBUTE *Attribute;\r | |
1173 | \r | |
1174 | ASSERT (SessionCommon != NULL);\r | |
1175 | //\r | |
1176 | // TODO: Remove the hard code of the support Alogrithm. Those data should be\r | |
1177 | // get from the SPD/PAD data.\r | |
1178 | //\r | |
1179 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1180 | SaData = AllocateZeroPool (\r | |
1181 | sizeof (IKEV2_SA_DATA) +\r | |
1182 | sizeof (IKEV2_PROPOSAL_DATA) * 2 +\r | |
1183 | sizeof (IKEV2_TRANSFORM_DATA) * 4 * 2\r | |
1184 | );\r | |
1185 | } else {\r | |
1186 | SaData = AllocateZeroPool (\r | |
1187 | sizeof (IKEV2_SA_DATA) +\r | |
1188 | sizeof (IKEV2_PROPOSAL_DATA) * 2 +\r | |
1189 | sizeof (IKEV2_TRANSFORM_DATA) * 3 * 2\r | |
1190 | );\r | |
1191 | }\r | |
1192 | if (SaData == NULL) {\r | |
1193 | return NULL;\r | |
1194 | }\r | |
1195 | \r | |
1196 | //\r | |
1197 | // First proposal payload: 3DES + SHA1 + DH\r | |
1198 | //\r | |
1199 | SaData->NumProposals = 2;\r | |
1200 | ProposalData = (IKEV2_PROPOSAL_DATA *) (SaData + 1);\r | |
1201 | ProposalData->ProposalIndex = 1;\r | |
1202 | \r | |
1203 | //\r | |
f75a7f56 | 1204 | // If SA data for IKE_SA_INIT exchage, contains 4 transforms. If SA data for\r |
9166f840 | 1205 | // IKE_AUTH exchange contains 3 transforms.\r |
1206 | //\r | |
1207 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1208 | ProposalData->NumTransforms = 4;\r | |
1209 | } else {\r | |
1210 | ProposalData->NumTransforms = 3;\r | |
1211 | }\r | |
1212 | \r | |
1213 | \r | |
1214 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1215 | ProposalData->ProtocolId = IPSEC_PROTO_ISAKMP;\r | |
1216 | } else {\r | |
1217 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1218 | ProposalData->ProtocolId = IPSEC_PROTO_IPSEC_ESP;\r | |
1219 | ProposalData->Spi = AllocateZeroPool (sizeof (ChildSaSession->LocalPeerSpi));\r | |
6b16c9e7 JW |
1220 | if (ProposalData->Spi == NULL) {\r |
1221 | FreePool (SaData);\r | |
1222 | return NULL;\r | |
1223 | }\r | |
f75a7f56 | 1224 | \r |
9166f840 | 1225 | CopyMem (\r |
1226 | ProposalData->Spi,\r | |
1227 | &ChildSaSession->LocalPeerSpi,\r | |
1228 | sizeof(ChildSaSession->LocalPeerSpi)\r | |
1229 | );\r | |
1230 | }\r | |
1231 | \r | |
1232 | //\r | |
1233 | // Set transform attribute for Encryption Algorithm - 3DES\r | |
1234 | //\r | |
1235 | TransformData = (IKEV2_TRANSFORM_DATA *) (ProposalData + 1);\r | |
1236 | TransformData->TransformIndex = 0;\r | |
1237 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_ENCR;\r | |
1238 | TransformData->TransformId = IKEV2_TRANSFORM_ID_ENCR_3DES;\r | |
1239 | \r | |
1240 | //\r | |
1241 | // Set transform attribute for Integrity Algorithm - SHA1_96\r | |
1242 | //\r | |
1243 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1244 | TransformData->TransformIndex = 1;\r | |
1245 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_INTEG;\r | |
1246 | TransformData->TransformId = IKEV2_TRANSFORM_ID_AUTH_HMAC_SHA1_96;\r | |
1247 | \r | |
1248 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1249 | //\r | |
1250 | // Set transform attribute for Pseduo-Random Function - HAMC_SHA1\r | |
1251 | //\r | |
1252 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1253 | TransformData->TransformIndex = 2;\r | |
1254 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_PRF;\r | |
1255 | TransformData->TransformId = IKEV2_TRANSFORM_ID_PRF_HMAC_SHA1;\r | |
1256 | }\r | |
1257 | \r | |
1258 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1259 | //\r | |
1260 | // Set transform attribute for DH Group - DH 1024\r | |
1261 | //\r | |
1262 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1263 | TransformData->TransformIndex = 3;\r | |
1264 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_DH;\r | |
1265 | TransformData->TransformId = IKEV2_TRANSFORM_ID_DH_1024MODP;\r | |
1266 | } else {\r | |
1267 | //\r | |
1268 | // Transform type for Extended Sequence Numbers. Currently not support Extended\r | |
1269 | // Sequence Number.\r | |
1270 | //\r | |
1271 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1272 | TransformData->TransformIndex = 2;\r | |
1273 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_ESN;\r | |
1274 | TransformData->TransformId = 0;\r | |
1275 | }\r | |
1276 | \r | |
1277 | //\r | |
1278 | // Second proposal payload: 3DES + SHA1 + DH\r | |
1279 | //\r | |
1280 | ProposalData = (IKEV2_PROPOSAL_DATA *) (TransformData + 1);\r | |
1281 | ProposalData->ProposalIndex = 2;\r | |
1282 | \r | |
1283 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1284 | ProposalData->ProtocolId = IPSEC_PROTO_ISAKMP;\r | |
1285 | ProposalData->NumTransforms = 4;\r | |
1286 | } else {\r | |
1287 | \r | |
1288 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1289 | ProposalData->ProtocolId = IPSEC_PROTO_IPSEC_ESP;\r | |
1290 | ProposalData->NumTransforms = 3;\r | |
1291 | ProposalData->Spi = AllocateZeroPool (sizeof (ChildSaSession->LocalPeerSpi));\r | |
6b16c9e7 JW |
1292 | if (ProposalData->Spi == NULL) {\r |
1293 | FreePool (((IKEV2_PROPOSAL_DATA *) (SaData + 1))->Spi);\r | |
1294 | FreePool (SaData);\r | |
1295 | return NULL;\r | |
1296 | }\r | |
f75a7f56 | 1297 | \r |
9166f840 | 1298 | CopyMem (\r |
1299 | ProposalData->Spi,\r | |
1300 | &ChildSaSession->LocalPeerSpi,\r | |
1301 | sizeof(ChildSaSession->LocalPeerSpi)\r | |
1302 | );\r | |
1303 | }\r | |
1304 | \r | |
1305 | //\r | |
1306 | // Set transform attribute for Encryption Algorithm - AES-CBC\r | |
1307 | //\r | |
1308 | TransformData = (IKEV2_TRANSFORM_DATA *) (ProposalData + 1);\r | |
1309 | TransformData->TransformIndex = 0;\r | |
1310 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_ENCR;\r | |
1311 | TransformData->TransformId = IKEV2_TRANSFORM_ID_ENCR_AES_CBC;\r | |
1312 | Attribute = &TransformData->Attribute;\r | |
1313 | Attribute->AttrType = IKEV2_ATTRIBUTE_TYPE_KEYLEN;\r | |
1314 | Attribute->Attr.AttrLength = (UINT16) (8 * IpSecGetEncryptKeyLength (IKEV2_TRANSFORM_ID_ENCR_AES_CBC));\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 attrbiute 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 | return SaData;\r | |
1354 | }\r | |
1355 | \r | |
1356 | /**\r | |
1357 | Store the SA into SAD.\r | |
1358 | \r | |
1359 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION.\r | |
1360 | \r | |
1361 | **/\r | |
1362 | VOID\r | |
1363 | Ikev2StoreSaData (\r | |
1364 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
1365 | )\r | |
1366 | {\r | |
1367 | EFI_STATUS Status;\r | |
1368 | EFI_IPSEC_SA_ID SaId;\r | |
1369 | EFI_IPSEC_SA_DATA2 SaData;\r | |
1370 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
1371 | IPSEC_PRIVATE_DATA *Private;\r | |
1372 | UINT32 TempAddressCount;\r | |
1373 | EFI_IP_ADDRESS_INFO *TempAddressInfo;\r | |
1374 | \r | |
1375 | SessionCommon = &ChildSaSession->SessionCommon;\r | |
1376 | Private = SessionCommon->Private;\r | |
1377 | \r | |
1378 | ZeroMem (&SaId, sizeof (EFI_IPSEC_SA_ID));\r | |
1379 | ZeroMem (&SaData, sizeof (EFI_IPSEC_SA_DATA2));\r | |
1380 | \r | |
1381 | //\r | |
1382 | // Create a SpdSelector. In this implementation, one SPD represents\r | |
f75a7f56 | 1383 | // 2 direction traffic, so in here, there needs to reverse the local address\r |
9166f840 | 1384 | // and remote address for Remote Peer's SA, then reverse again for the locate\r |
f75a7f56 | 1385 | // SA.\r |
9166f840 | 1386 | //\r |
1387 | TempAddressCount = ChildSaSession->SpdSelector->LocalAddressCount;\r | |
1388 | TempAddressInfo = ChildSaSession->SpdSelector->LocalAddress;\r | |
1389 | \r | |
1390 | ChildSaSession->SpdSelector->LocalAddressCount = ChildSaSession->SpdSelector->RemoteAddressCount;\r | |
1391 | ChildSaSession->SpdSelector->LocalAddress = ChildSaSession->SpdSelector->RemoteAddress;\r | |
1392 | \r | |
1393 | ChildSaSession->SpdSelector->RemoteAddress = TempAddressInfo;\r | |
1394 | ChildSaSession->SpdSelector->RemoteAddressCount= TempAddressCount;\r | |
1395 | \r | |
1396 | //\r | |
1397 | // Set the SaId and SaData.\r | |
1398 | //\r | |
1399 | SaId.Spi = ChildSaSession->LocalPeerSpi;\r | |
1400 | SaId.Proto = EfiIPsecESP;\r | |
1401 | SaData.AntiReplayWindows = 16;\r | |
1402 | SaData.SNCount = 0;\r | |
1403 | SaData.Mode = ChildSaSession->Spd->Data->ProcessingPolicy->Mode;\r | |
1404 | \r | |
1405 | //\r | |
1406 | // If it is tunnel mode, should add the TunnelDest and TunnelSource for SaData.\r | |
1407 | //\r | |
1408 | if (SaData.Mode == EfiIPsecTunnel) {\r | |
1409 | CopyMem (\r | |
f75a7f56 | 1410 | &SaData.TunnelSourceAddress,\r |
9166f840 | 1411 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->RemoteTunnelAddress,\r |
1412 | sizeof (EFI_IP_ADDRESS)\r | |
1413 | );\r | |
1414 | CopyMem (\r | |
1415 | &SaData.TunnelDestinationAddress,\r | |
1416 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->LocalTunnelAddress,\r | |
1417 | sizeof (EFI_IP_ADDRESS)\r | |
1418 | );\r | |
1419 | }\r | |
1420 | \r | |
1421 | CopyMem (&SaId.DestAddress, &ChildSaSession->SessionCommon.LocalPeerIp, sizeof (EFI_IP_ADDRESS));\r | |
1422 | CopyMem (&SaData.AlgoInfo, &ChildSaSession->ChildKeymats.LocalPeerInfo, sizeof (EFI_IPSEC_ALGO_INFO));\r | |
1423 | SaData.SpdSelector = ChildSaSession->SpdSelector;\r | |
1424 | \r | |
1425 | //\r | |
1426 | // Store the remote SA into SAD.\r | |
1427 | //\r | |
1428 | Status = EfiIpSecConfigSetData (\r | |
1429 | &Private->IpSecConfig,\r | |
1430 | IPsecConfigDataTypeSad,\r | |
1431 | (EFI_IPSEC_CONFIG_SELECTOR *) &SaId,\r | |
1432 | &SaData,\r | |
1433 | NULL\r | |
1434 | );\r | |
1435 | ASSERT_EFI_ERROR (Status);\r | |
1436 | \r | |
1437 | //\r | |
1438 | // Store the local SA into SAD.\r | |
f75a7f56 | 1439 | //\r |
9166f840 | 1440 | ChildSaSession->SpdSelector->RemoteAddressCount = ChildSaSession->SpdSelector->LocalAddressCount;\r |
1441 | ChildSaSession->SpdSelector->RemoteAddress = ChildSaSession->SpdSelector->LocalAddress;\r | |
1442 | \r | |
1443 | ChildSaSession->SpdSelector->LocalAddress = TempAddressInfo;\r | |
1444 | ChildSaSession->SpdSelector->LocalAddressCount = TempAddressCount;\r | |
f75a7f56 | 1445 | \r |
9166f840 | 1446 | SaId.Spi = ChildSaSession->RemotePeerSpi;\r |
1447 | \r | |
1448 | CopyMem (&SaId.DestAddress, &ChildSaSession->SessionCommon.RemotePeerIp, sizeof (EFI_IP_ADDRESS));\r | |
1449 | CopyMem (&SaData.AlgoInfo, &ChildSaSession->ChildKeymats.RemotePeerInfo, sizeof (EFI_IPSEC_ALGO_INFO));\r | |
1450 | SaData.SpdSelector = ChildSaSession->SpdSelector;\r | |
1451 | \r | |
1452 | //\r | |
1453 | // If it is tunnel mode, should add the TunnelDest and TunnelSource for SaData.\r | |
1454 | //\r | |
1455 | if (SaData.Mode == EfiIPsecTunnel) {\r | |
1456 | CopyMem (\r | |
1457 | &SaData.TunnelSourceAddress,\r | |
1458 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->LocalTunnelAddress,\r | |
1459 | sizeof (EFI_IP_ADDRESS)\r | |
1460 | );\r | |
1461 | CopyMem (\r | |
1462 | &SaData.TunnelDestinationAddress,\r | |
1463 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->RemoteTunnelAddress,\r | |
1464 | sizeof (EFI_IP_ADDRESS)\r | |
1465 | );\r | |
1466 | }\r | |
1467 | \r | |
1468 | Status = EfiIpSecConfigSetData (\r | |
1469 | &Private->IpSecConfig,\r | |
1470 | IPsecConfigDataTypeSad,\r | |
1471 | (EFI_IPSEC_CONFIG_SELECTOR *) &SaId,\r | |
1472 | &SaData,\r | |
1473 | NULL\r | |
1474 | );\r | |
1475 | \r | |
1476 | ASSERT_EFI_ERROR (Status);\r | |
1477 | }\r | |
1478 | \r | |
1479 | /**\r | |
1480 | Call back function of the IKE life time is over.\r | |
1481 | \r | |
f75a7f56 | 1482 | This function will mark the related IKE SA Session as deleting and trigger a\r |
9166f840 | 1483 | Information negotiation.\r |
1484 | \r | |
1485 | @param[in] Event The signaled Event.\r | |
1486 | @param[in] Context Pointer to data passed by caller.\r | |
f75a7f56 | 1487 | \r |
9166f840 | 1488 | **/\r |
1489 | VOID\r | |
1490 | EFIAPI\r | |
1491 | Ikev2LifetimeNotify (\r | |
1492 | IN EFI_EVENT Event,\r | |
1493 | IN VOID *Context\r | |
1494 | )\r | |
1495 | {\r | |
1496 | IKEV2_SA_SESSION *IkeSaSession;\r | |
1497 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1498 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
1499 | \r | |
1500 | ASSERT (Context != NULL);\r | |
1501 | SessionCommon = (IKEV2_SESSION_COMMON *) Context;\r | |
1502 | \r | |
1503 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1504 | IkeSaSession = IKEV2_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1505 | DEBUG ((\r | |
1506 | DEBUG_INFO,\r | |
1507 | "\n---IkeSa Lifetime is out(cookie_i, cookie_r):(0x%lx, 0x%lx)---\n",\r | |
1508 | IkeSaSession->InitiatorCookie,\r | |
1509 | IkeSaSession->ResponderCookie\r | |
1510 | ));\r | |
1511 | \r | |
1512 | //\r | |
1513 | // Change the IKE SA Session's State to IKE_STATE_SA_DELETING.\r | |
1514 | //\r | |
1515 | IKEV2_DUMP_STATE (IkeSaSession->SessionCommon.State, IkeStateSaDeleting);\r | |
1516 | IkeSaSession->SessionCommon.State = IkeStateSaDeleting;\r | |
1517 | \r | |
1518 | } else {\r | |
1519 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1520 | IkeSaSession = ChildSaSession->IkeSaSession;\r | |
1521 | \r | |
1522 | //\r | |
1523 | // Link the timeout child SA to the DeleteSaList.\r | |
1524 | //\r | |
1525 | InsertTailList (&IkeSaSession->DeleteSaList, &ChildSaSession->ByDelete);\r | |
1526 | \r | |
1527 | //\r | |
1528 | // Change the Child SA Session's State to IKE_STATE_SA_DELETING.\r | |
f75a7f56 | 1529 | //\r |
9166f840 | 1530 | DEBUG ((\r |
1531 | DEBUG_INFO,\r | |
1532 | "\n------ChildSa Lifetime is out(SPI):(0x%x)------\n",\r | |
1533 | ChildSaSession->LocalPeerSpi\r | |
1534 | ));\r | |
1535 | }\r | |
1536 | \r | |
1537 | //\r | |
1538 | // TODO: Send the delete info packet or delete silently\r | |
1539 | //\r | |
1540 | mIkev2Exchange.NegotiateInfo ((UINT8 *) IkeSaSession, NULL);\r | |
1541 | }\r | |
1542 | \r | |
1543 | /**\r | |
1544 | This function will be called if the TimeOut Event is signaled.\r | |
1545 | \r | |
1546 | @param[in] Event The signaled Event.\r | |
1547 | @param[in] Context The data passed by caller.\r | |
1548 | \r | |
1549 | **/\r | |
1550 | VOID\r | |
1551 | EFIAPI\r | |
1552 | Ikev2ResendNotify (\r | |
1553 | IN EFI_EVENT Event,\r | |
1554 | IN VOID *Context\r | |
1555 | )\r | |
1556 | {\r | |
1557 | IPSEC_PRIVATE_DATA *Private;\r | |
1558 | IKEV2_SA_SESSION *IkeSaSession;\r | |
1559 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1560 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
1561 | LIST_ENTRY *ChildSaEntry;\r | |
1562 | UINT8 Value;\r | |
1563 | EFI_STATUS Status;\r | |
1564 | \r | |
f75a7f56 | 1565 | ASSERT (Context != NULL);\r |
9166f840 | 1566 | IkeSaSession = NULL;\r |
1567 | ChildSaSession = NULL;\r | |
1568 | SessionCommon = (IKEV2_SESSION_COMMON *) Context;\r | |
1569 | Private = SessionCommon->Private;\r | |
1570 | \r | |
1571 | //\r | |
1572 | // Remove the SA session from the processing list if exceed the max retry.\r | |
1573 | //\r | |
1574 | if (SessionCommon->RetryCount > IKE_MAX_RETRY) {\r | |
1575 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1576 | IkeSaSession = IKEV2_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1577 | if (IkeSaSession->SessionCommon.State == IkeStateSaDeleting) {\r | |
1578 | \r | |
1579 | //\r | |
1580 | // If the IkeSaSession is initiator, delete all its Child SAs before removing IKE SA.\r | |
1581 | // If the IkesaSession is responder, all ChildSa has been remove in Ikev2HandleInfo();\r | |
1582 | //\r | |
1583 | for (ChildSaEntry = IkeSaSession->ChildSaEstablishSessionList.ForwardLink;\r | |
1584 | ChildSaEntry != &IkeSaSession->ChildSaEstablishSessionList;\r | |
1585 | ) {\r | |
1586 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (ChildSaEntry);\r | |
1587 | //\r | |
1588 | // Move to next ChildSa Entry.\r | |
1589 | //\r | |
1590 | ChildSaEntry = ChildSaEntry->ForwardLink;\r | |
1591 | //\r | |
1592 | // Delete LocalSpi & RemoteSpi and remove the ChildSaSession from the\r | |
1593 | // EstablishedChildSaList.\r | |
1594 | //\r | |
1595 | Ikev2ChildSaSilentDelete (IkeSaSession, ChildSaSession->LocalPeerSpi);\r | |
1596 | }\r | |
1597 | \r | |
1598 | //\r | |
1599 | // If the IKE SA Delete Payload wasn't sent out successfully, Delete it from the EstablishedList.\r | |
1600 | //\r | |
1601 | Ikev2SaSessionRemove (&Private->Ikev2EstablishedList, &SessionCommon->RemotePeerIp);\r | |
1602 | \r | |
1603 | if (Private != NULL && Private->IsIPsecDisabling) {\r | |
1604 | //\r | |
1605 | // After all IKE SAs were deleted, set the IPSEC_STATUS_DISABLED value in\r | |
1606 | // IPsec status variable.\r | |
1607 | //\r | |
1608 | if (IsListEmpty (&Private->Ikev1EstablishedList) && IsListEmpty (&Private->Ikev2EstablishedList)) {\r | |
1609 | Value = IPSEC_STATUS_DISABLED;\r | |
1610 | Status = gRT->SetVariable (\r | |
1611 | IPSECCONFIG_STATUS_NAME,\r | |
1612 | &gEfiIpSecConfigProtocolGuid,\r | |
1613 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
1614 | sizeof (Value),\r | |
1615 | &Value\r | |
1616 | );\r | |
1617 | if (!EFI_ERROR (Status)) {\r | |
1618 | //\r | |
1619 | // Set the Disabled Flag in Private data.\r | |
1620 | //\r | |
1621 | Private->IpSec.DisabledFlag = TRUE;\r | |
1622 | Private->IsIPsecDisabling = FALSE;\r | |
1623 | }\r | |
1624 | }\r | |
1625 | }\r | |
1626 | } else {\r | |
1627 | Ikev2SaSessionRemove (&Private->Ikev2SessionList, &SessionCommon->RemotePeerIp);\r | |
1628 | }\r | |
1629 | Ikev2SaSessionFree (IkeSaSession);\r | |
1630 | \r | |
1631 | } else {\r | |
1632 | \r | |
1633 | //\r | |
1634 | // If the packet sent by Child SA.\r | |
1635 | //\r | |
1636 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1637 | IkeSaSession = ChildSaSession->IkeSaSession;\r | |
1638 | if (ChildSaSession->SessionCommon.State == IkeStateSaDeleting) {\r | |
1639 | \r | |
1640 | //\r | |
f75a7f56 LG |
1641 | // Established Child SA should be remove from the SAD entry and\r |
1642 | // DeleteList. The function of Ikev2DeleteChildSaSilent() will remove\r | |
1643 | // the childSA from the IkeSaSession->ChildSaEstablishedList. So there\r | |
9166f840 | 1644 | // is no need to remove it here.\r |
1645 | //\r | |
1646 | Ikev2ChildSaSilentDelete (IkeSaSession, ChildSaSession->LocalPeerSpi);\r | |
1647 | Ikev2ChildSaSessionRemove (\r | |
1648 | &IkeSaSession->DeleteSaList,\r | |
1649 | ChildSaSession->LocalPeerSpi,\r | |
1650 | IKEV2_DELET_CHILDSA_LIST\r | |
1651 | );\r | |
1652 | } else {\r | |
1653 | Ikev2ChildSaSessionRemove (\r | |
1654 | &IkeSaSession->ChildSaSessionList,\r | |
1655 | ChildSaSession->LocalPeerSpi,\r | |
1656 | IKEV2_ESTABLISHING_CHILDSA_LIST\r | |
1657 | );\r | |
1658 | }\r | |
1659 | \r | |
1660 | Ikev2ChildSaSessionFree (ChildSaSession);\r | |
1661 | }\r | |
1662 | return ;\r | |
1663 | }\r | |
1664 | \r | |
1665 | //\r | |
1666 | // Increase the retry count.\r | |
1667 | //\r | |
1668 | SessionCommon->RetryCount++;\r | |
1669 | DEBUG ((DEBUG_INFO, ">>>Resending the last packet ...\n"));\r | |
1670 | \r | |
1671 | //\r | |
1672 | // Resend the last packet.\r | |
1673 | //\r | |
1674 | Ikev2SendIkePacket (\r | |
1675 | SessionCommon->UdpService,\r | |
1676 | (UINT8*)SessionCommon,\r | |
1677 | SessionCommon->LastSentPacket,\r | |
1678 | 0\r | |
1679 | );\r | |
1680 | }\r | |
1681 | \r | |
1682 | /**\r | |
1683 | Copy ChildSaSession->Spd->Selector to ChildSaSession->SpdSelector.\r | |
1684 | \r | |
1685 | ChildSaSession->SpdSelector stores the real Spdselector for its SA. Sometime,\r | |
f75a7f56 | 1686 | the SpdSelector in ChildSaSession is more accurated or the scope is smaller\r |
9166f840 | 1687 | than the one in ChildSaSession->Spd, especially for the tunnel mode.\r |
f75a7f56 | 1688 | \r |
9166f840 | 1689 | @param[in, out] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION related to.\r |
6b16c9e7 JW |
1690 | \r |
1691 | @retval EFI_SUCCESS The operation complete successfully.\r | |
1692 | @retval EFI_OUT_OF_RESOURCES If the required resource can't be allocated.\r | |
f75a7f56 | 1693 | \r |
9166f840 | 1694 | **/\r |
6b16c9e7 | 1695 | EFI_STATUS\r |
9166f840 | 1696 | Ikev2ChildSaSessionSpdSelectorCreate (\r |
1697 | IN OUT IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
f75a7f56 | 1698 | )\r |
9166f840 | 1699 | {\r |
6b16c9e7 JW |
1700 | EFI_STATUS Status;\r |
1701 | \r | |
1702 | Status = EFI_SUCCESS;\r | |
1703 | \r | |
9166f840 | 1704 | if (ChildSaSession->Spd != NULL && ChildSaSession->Spd->Selector != NULL) {\r |
1705 | if (ChildSaSession->SpdSelector == NULL) {\r | |
1706 | ChildSaSession->SpdSelector = AllocateZeroPool (sizeof (EFI_IPSEC_SPD_SELECTOR));\r | |
6b16c9e7 JW |
1707 | if (ChildSaSession->SpdSelector == NULL) {\r |
1708 | Status = EFI_OUT_OF_RESOURCES;\r | |
1709 | return Status;\r | |
1710 | }\r | |
9166f840 | 1711 | }\r |
1712 | CopyMem (\r | |
f75a7f56 LG |
1713 | ChildSaSession->SpdSelector,\r |
1714 | ChildSaSession->Spd->Selector,\r | |
9166f840 | 1715 | sizeof (EFI_IPSEC_SPD_SELECTOR)\r |
1716 | );\r | |
1717 | ChildSaSession->SpdSelector->RemoteAddress = AllocateCopyPool (\r | |
f75a7f56 LG |
1718 | ChildSaSession->Spd->Selector->RemoteAddressCount *\r |
1719 | sizeof (EFI_IP_ADDRESS_INFO),\r | |
9166f840 | 1720 | ChildSaSession->Spd->Selector->RemoteAddress\r |
1721 | );\r | |
6b16c9e7 JW |
1722 | if (ChildSaSession->SpdSelector->RemoteAddress == NULL) {\r |
1723 | Status = EFI_OUT_OF_RESOURCES;\r | |
1724 | \r | |
1725 | FreePool (ChildSaSession->SpdSelector);\r | |
f75a7f56 | 1726 | \r |
6b16c9e7 JW |
1727 | return Status;\r |
1728 | }\r | |
f75a7f56 | 1729 | \r |
9166f840 | 1730 | ChildSaSession->SpdSelector->LocalAddress = AllocateCopyPool (\r |
f75a7f56 LG |
1731 | ChildSaSession->Spd->Selector->LocalAddressCount *\r |
1732 | sizeof (EFI_IP_ADDRESS_INFO),\r | |
9166f840 | 1733 | ChildSaSession->Spd->Selector->LocalAddress\r |
1734 | );\r | |
6b16c9e7 JW |
1735 | if (ChildSaSession->SpdSelector->LocalAddress == NULL) {\r |
1736 | Status = EFI_OUT_OF_RESOURCES;\r | |
1737 | \r | |
1738 | FreePool (ChildSaSession->SpdSelector->RemoteAddress);\r | |
9166f840 | 1739 | \r |
6b16c9e7 | 1740 | FreePool (ChildSaSession->SpdSelector);\r |
f75a7f56 | 1741 | \r |
6b16c9e7 JW |
1742 | return Status;\r |
1743 | }\r | |
9166f840 | 1744 | \r |
1745 | ChildSaSession->SpdSelector->RemoteAddressCount = ChildSaSession->Spd->Selector->RemoteAddressCount;\r | |
f75a7f56 | 1746 | ChildSaSession->SpdSelector->LocalAddressCount = ChildSaSession->Spd->Selector->LocalAddressCount;\r |
9166f840 | 1747 | }\r |
6b16c9e7 JW |
1748 | \r |
1749 | return Status;\r | |
9166f840 | 1750 | }\r |
1751 | \r | |
1752 | /**\r | |
1753 | Generate a ChildSa Session and insert it into related IkeSaSession.\r | |
1754 | \r | |
1755 | @param[in] IkeSaSession Pointer to related IKEV2_SA_SESSION.\r | |
1756 | @param[in] UdpService Pointer to related IKE_UDP_SERVICE.\r | |
1757 | \r | |
1758 | @return pointer of IKEV2_CHILD_SA_SESSION.\r | |
1759 | \r | |
1760 | **/\r | |
1761 | IKEV2_CHILD_SA_SESSION *\r | |
1762 | Ikev2ChildSaSessionCreate (\r | |
1763 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
1764 | IN IKE_UDP_SERVICE *UdpService\r | |
1765 | )\r | |
1766 | {\r | |
1767 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1768 | IKEV2_SESSION_COMMON *ChildSaCommon;\r | |
1769 | \r | |
1770 | //\r | |
1771 | // Create a new ChildSaSession.Insert it into processing list and initiate the common parameters.\r | |
1772 | //\r | |
1773 | ChildSaSession = Ikev2ChildSaSessionAlloc (UdpService, IkeSaSession);\r | |
6b16c9e7 JW |
1774 | if (ChildSaSession == NULL) {\r |
1775 | return NULL;\r | |
1776 | }\r | |
9166f840 | 1777 | \r |
1778 | //\r | |
1779 | // Set the specific parameters.\r | |
f75a7f56 | 1780 | //\r |
9166f840 | 1781 | ChildSaSession->Spd = IkeSaSession->Spd;\r |
1782 | ChildSaCommon = &ChildSaSession->SessionCommon;\r | |
1783 | ChildSaCommon->IsInitiator = IkeSaSession->SessionCommon.IsInitiator;\r | |
1784 | if (IkeSaSession->SessionCommon.State == IkeStateAuth) {\r | |
1785 | ChildSaCommon->State = IkeStateAuth;\r | |
1786 | IKEV2_DUMP_STATE (ChildSaCommon->State, IkeStateAuth);\r | |
1787 | } else {\r | |
1788 | ChildSaCommon->State = IkeStateCreateChild;\r | |
1789 | IKEV2_DUMP_STATE (ChildSaCommon->State, IkeStateCreateChild);\r | |
1790 | }\r | |
1791 | \r | |
1792 | //\r | |
1793 | // If SPD->Selector is not NULL, copy it to the ChildSaSession->SpdSelector.\r | |
1794 | // The ChildSaSession->SpdSelector might be changed after the traffic selector\r | |
1795 | // negoniation and it will be copied into the SAData after ChildSA established.\r | |
1796 | //\r | |
6b16c9e7 JW |
1797 | if (EFI_ERROR (Ikev2ChildSaSessionSpdSelectorCreate (ChildSaSession))) {\r |
1798 | Ikev2ChildSaSessionFree (ChildSaSession);\r | |
1799 | return NULL;\r | |
1800 | }\r | |
9166f840 | 1801 | \r |
1802 | //\r | |
1803 | // Copy first NiBlock and NrBlock to ChildSa Session\r | |
1804 | //\r | |
1805 | ChildSaSession->NiBlock = AllocateZeroPool (IkeSaSession->NiBlkSize);\r | |
6b16c9e7 JW |
1806 | if (ChildSaSession->NiBlock == NULL) {\r |
1807 | Ikev2ChildSaSessionFree (ChildSaSession);\r | |
1808 | return NULL;\r | |
1809 | }\r | |
f75a7f56 | 1810 | \r |
9166f840 | 1811 | ChildSaSession->NiBlkSize = IkeSaSession->NiBlkSize;\r |
1812 | CopyMem (ChildSaSession->NiBlock, IkeSaSession->NiBlock, IkeSaSession->NiBlkSize);\r | |
1813 | \r | |
1814 | ChildSaSession->NrBlock = AllocateZeroPool (IkeSaSession->NrBlkSize);\r | |
6b16c9e7 JW |
1815 | if (ChildSaSession->NrBlock == NULL) {\r |
1816 | Ikev2ChildSaSessionFree (ChildSaSession);\r | |
1817 | return NULL;\r | |
1818 | }\r | |
f75a7f56 | 1819 | \r |
9166f840 | 1820 | ChildSaSession->NrBlkSize = IkeSaSession->NrBlkSize;\r |
1821 | CopyMem (ChildSaSession->NrBlock, IkeSaSession->NrBlock, IkeSaSession->NrBlkSize);\r | |
1822 | \r | |
1823 | //\r | |
f75a7f56 LG |
1824 | // Only if the Create Child SA is called for the IKE_INIT Exchange and\r |
1825 | // IkeSaSession is initiator (Only Initiator's SPD is not NULL), Set the\r | |
9166f840 | 1826 | // Traffic Selectors related information here.\r |
1827 | //\r | |
1828 | if (IkeSaSession->SessionCommon.State == IkeStateAuth && IkeSaSession->Spd != NULL) {\r | |
1829 | ChildSaSession->ProtoId = IkeSaSession->Spd->Selector->NextLayerProtocol;\r | |
1830 | ChildSaSession->LocalPort = IkeSaSession->Spd->Selector->LocalPort;\r | |
1831 | ChildSaSession->RemotePort = IkeSaSession->Spd->Selector->RemotePort;\r | |
1832 | }\r | |
1833 | \r | |
1834 | //\r | |
1835 | // Insert the new ChildSaSession into processing child SA list.\r | |
1836 | //\r | |
1837 | Ikev2ChildSaSessionInsert (&IkeSaSession->ChildSaSessionList, ChildSaSession);\r | |
1838 | return ChildSaSession;\r | |
1839 | }\r | |
1840 | \r | |
1841 | /**\r | |
1842 | Check if the SPD is related to the input Child SA Session.\r | |
1843 | \r | |
1844 | This function is the subfunction of Ikev1AssociateSpdEntry(). It is the call\r | |
f75a7f56 LG |
1845 | back function of IpSecVisitConfigData().\r |
1846 | \r | |
9166f840 | 1847 | \r |
1848 | @param[in] Type Type of the input Config Selector.\r | |
f75a7f56 LG |
1849 | @param[in] Selector Pointer to the Configure Selector to be checked.\r |
1850 | @param[in] Data Pointer to the Configure Selector's Data passed\r | |
9166f840 | 1851 | from the caller.\r |
1852 | @param[in] SelectorSize The buffer size of Selector.\r | |
1853 | @param[in] DataSize The buffer size of the Data.\r | |
1854 | @param[in] Context The data passed from the caller. It is a Child\r | |
1855 | SA Session in this context.\r | |
1856 | \r | |
f75a7f56 LG |
1857 | @retval EFI_SUCCESS The SPD Selector is not related to the Child SA Session.\r |
1858 | @retval EFI_ABORTED The SPD Selector is related to the Child SA session and\r | |
9166f840 | 1859 | set the ChildSaSession->Spd to point to this SPD Selector.\r |
1860 | \r | |
1861 | **/\r | |
1862 | EFI_STATUS\r | |
1863 | Ikev2MatchSpdEntry (\r | |
1864 | IN EFI_IPSEC_CONFIG_DATA_TYPE Type,\r | |
1865 | IN EFI_IPSEC_CONFIG_SELECTOR *Selector,\r | |
1866 | IN VOID *Data,\r | |
1867 | IN UINTN SelectorSize,\r | |
1868 | IN UINTN DataSize,\r | |
1869 | IN VOID *Context\r | |
1870 | )\r | |
1871 | {\r | |
1872 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1873 | EFI_IPSEC_SPD_SELECTOR *SpdSelector;\r | |
1874 | EFI_IPSEC_SPD_DATA *SpdData;\r | |
1875 | BOOLEAN IsMatch;\r | |
1876 | UINT8 IpVersion;\r | |
1877 | \r | |
1878 | ASSERT (Type == IPsecConfigDataTypeSpd);\r | |
1879 | SpdData = (EFI_IPSEC_SPD_DATA *) Data;\r | |
1880 | //\r | |
1881 | // Bypass all non-protect SPD entry first\r | |
1882 | //\r | |
1883 | if (SpdData->Action != EfiIPsecActionProtect) {\r | |
1884 | return EFI_SUCCESS;\r | |
1885 | }\r | |
1886 | \r | |
1887 | ChildSaSession = (IKEV2_CHILD_SA_SESSION *) Context;\r | |
1888 | IpVersion = ChildSaSession->SessionCommon.UdpService->IpVersion;\r | |
f75a7f56 | 1889 | SpdSelector = (EFI_IPSEC_SPD_SELECTOR *) Selector;\r |
9166f840 | 1890 | IsMatch = TRUE;\r |
1891 | \r | |
1892 | if (SpdSelector->NextLayerProtocol == EFI_IP_PROTO_UDP &&\r | |
1893 | SpdSelector->LocalPort == IKE_DEFAULT_PORT &&\r | |
1894 | SpdSelector->LocalPortRange == 0 &&\r | |
1895 | SpdSelector->RemotePort == IKE_DEFAULT_PORT &&\r | |
1896 | SpdSelector->RemotePortRange == 0\r | |
1897 | ) {\r | |
1898 | //\r | |
1899 | // TODO: Skip IKE Policy here or set a SPD entry?\r | |
1900 | //\r | |
1901 | return EFI_SUCCESS;\r | |
1902 | }\r | |
1903 | \r | |
1904 | if (SpdSelector->NextLayerProtocol != EFI_IPSEC_ANY_PROTOCOL &&\r | |
1905 | SpdSelector->NextLayerProtocol != ChildSaSession->ProtoId\r | |
1906 | ) {\r | |
1907 | IsMatch = FALSE;\r | |
1908 | }\r | |
1909 | \r | |
1910 | if (SpdSelector->LocalPort != EFI_IPSEC_ANY_PORT && SpdSelector->LocalPort != ChildSaSession->LocalPort) {\r | |
1911 | IsMatch = FALSE;\r | |
1912 | }\r | |
1913 | \r | |
1914 | if (SpdSelector->RemotePort != EFI_IPSEC_ANY_PORT && SpdSelector->RemotePort != ChildSaSession->RemotePort) {\r | |
1915 | IsMatch = FALSE;\r | |
1916 | }\r | |
1917 | \r | |
f75a7f56 | 1918 | IsMatch = (BOOLEAN) (IsMatch &&\r |
9166f840 | 1919 | IpSecMatchIpAddress (\r |
1920 | IpVersion,\r | |
1921 | &ChildSaSession->SessionCommon.LocalPeerIp,\r | |
1922 | SpdSelector->LocalAddress,\r | |
1923 | SpdSelector->LocalAddressCount\r | |
1924 | ));\r | |
1925 | \r | |
f75a7f56 | 1926 | IsMatch = (BOOLEAN) (IsMatch &&\r |
9166f840 | 1927 | IpSecMatchIpAddress (\r |
1928 | IpVersion,\r | |
1929 | &ChildSaSession->SessionCommon.RemotePeerIp,\r | |
1930 | SpdSelector->RemoteAddress,\r | |
1931 | SpdSelector->RemoteAddressCount\r | |
1932 | ));\r | |
1933 | \r | |
1934 | if (IsMatch) {\r | |
1935 | ChildSaSession->Spd = IkeSearchSpdEntry (SpdSelector);\r | |
1936 | return EFI_ABORTED;\r | |
1937 | } else {\r | |
1938 | return EFI_SUCCESS;\r | |
1939 | }\r | |
1940 | }\r | |
1941 | \r | |
1942 | /**\r | |
1943 | Check if the Algorithm ID is supported.\r | |
1944 | \r | |
1945 | @param[in] AlgorithmId The specified Algorithm ID.\r | |
1946 | @param[in] Type The type used to indicate the Algorithm is for Encrypt or\r | |
1947 | Authentication.\r | |
1948 | \r | |
1949 | @retval TRUE If the Algorithm ID is supported.\r | |
1950 | @retval FALSE If the Algorithm ID is not supported.\r | |
1951 | \r | |
1952 | **/\r | |
1953 | BOOLEAN\r | |
1954 | Ikev2IsSupportAlg (\r | |
1955 | IN UINT16 AlgorithmId,\r | |
1956 | IN UINT8 Type\r | |
1957 | )\r | |
1958 | {\r | |
1959 | UINT8 Index;\r | |
1960 | switch (Type) {\r | |
1961 | case IKE_ENCRYPT_TYPE :\r | |
1962 | for (Index = 0; Index < IKEV2_SUPPORT_ENCRYPT_ALGORITHM_NUM; Index++) {\r | |
1963 | if (mIkev2EncryptAlgorithmList[Index] == AlgorithmId) {\r | |
1964 | return TRUE;\r | |
1965 | }\r | |
1966 | }\r | |
1967 | break;\r | |
1968 | \r | |
1969 | case IKE_AUTH_TYPE :\r | |
1970 | for (Index = 0; Index < IKEV2_SUPPORT_AUTH_ALGORITHM_NUM; Index++) {\r | |
1971 | if (mIkev2AuthAlgorithmList[Index] == AlgorithmId) {\r | |
1972 | return TRUE;\r | |
1973 | }\r | |
1974 | }\r | |
1975 | break;\r | |
1976 | \r | |
1977 | case IKE_DH_TYPE :\r | |
1978 | for (Index = 0; Index < IKEV2_SUPPORT_DH_ALGORITHM_NUM; Index++) {\r | |
1979 | if (mIkev2DhGroupAlgorithmList[Index] == AlgorithmId) {\r | |
1980 | return TRUE;\r | |
1981 | }\r | |
1982 | }\r | |
1983 | break;\r | |
1984 | \r | |
1985 | case IKE_PRF_TYPE :\r | |
1986 | for (Index = 0; Index < IKEV2_SUPPORT_PRF_ALGORITHM_NUM; Index++) {\r | |
1987 | if (mIkev2PrfAlgorithmList[Index] == AlgorithmId) {\r | |
1988 | return TRUE;\r | |
1989 | }\r | |
1990 | }\r | |
1991 | }\r | |
1992 | return FALSE;\r | |
1993 | }\r | |
1994 | \r | |
1995 | /**\r | |
1996 | Get the preferred algorithm types from ProposalData.\r | |
1997 | \r | |
1998 | @param[in] ProposalData Pointer to related IKEV2_PROPOSAL_DATA.\r | |
1999 | @param[out] PreferEncryptAlgorithm Output of preferred encrypt algorithm.\r | |
f75a7f56 LG |
2000 | @param[out] PreferIntegrityAlgorithm Output of preferred integrity algorithm.\r |
2001 | @param[out] PreferPrfAlgorithm Output of preferred PRF algorithm. Only\r | |
9166f840 | 2002 | for IKE SA.\r |
f75a7f56 | 2003 | @param[out] PreferDhGroup Output of preferred DH group. Only for\r |
9166f840 | 2004 | IKE SA.\r |
f75a7f56 | 2005 | @param[out] PreferEncryptKeylength Output of preferred encrypt key length\r |
9166f840 | 2006 | in bytes.\r |
2007 | @param[out] IsSupportEsn Output of value about the Extented Sequence\r | |
2008 | Number is support or not. Only for Child SA.\r | |
2009 | @param[in] IsChildSa If it is ture, the ProposalData is for IKE\r | |
2010 | SA. Otherwise the proposalData is for Child SA.\r | |
2011 | \r | |
2012 | **/\r | |
2013 | VOID\r | |
2014 | Ikev2ParseProposalData (\r | |
f75a7f56 | 2015 | IN IKEV2_PROPOSAL_DATA *ProposalData,\r |
9166f840 | 2016 | OUT UINT16 *PreferEncryptAlgorithm,\r |
2017 | OUT UINT16 *PreferIntegrityAlgorithm,\r | |
2018 | OUT UINT16 *PreferPrfAlgorithm,\r | |
2019 | OUT UINT16 *PreferDhGroup,\r | |
2020 | OUT UINTN *PreferEncryptKeylength,\r | |
2021 | OUT BOOLEAN *IsSupportEsn,\r | |
2022 | IN BOOLEAN IsChildSa\r | |
f75a7f56 | 2023 | )\r |
9166f840 | 2024 | {\r |
2025 | IKEV2_TRANSFORM_DATA *TransformData;\r | |
2026 | UINT8 TransformIndex;\r | |
2027 | \r | |
2028 | //\r | |
2029 | // Check input parameters.\r | |
2030 | //\r | |
2031 | if (ProposalData == NULL ||\r | |
f75a7f56 | 2032 | PreferEncryptAlgorithm == NULL ||\r |
9166f840 | 2033 | PreferIntegrityAlgorithm == NULL ||\r |
2034 | PreferEncryptKeylength == NULL\r | |
2035 | ) {\r | |
2036 | return;\r | |
2037 | }\r | |
2038 | \r | |
2039 | if (IsChildSa) {\r | |
2040 | if (IsSupportEsn == NULL) {\r | |
2041 | return;\r | |
2042 | }\r | |
2043 | } else {\r | |
2044 | if (PreferPrfAlgorithm == NULL || PreferDhGroup == NULL) {\r | |
2045 | return;\r | |
2046 | }\r | |
f75a7f56 | 2047 | }\r |
9166f840 | 2048 | \r |
2049 | TransformData = (IKEV2_TRANSFORM_DATA *)(ProposalData + 1);\r | |
2050 | for (TransformIndex = 0; TransformIndex < ProposalData->NumTransforms; TransformIndex++) {\r | |
f75a7f56 | 2051 | switch (TransformData->TransformType) {\r |
9166f840 | 2052 | //\r |
f75a7f56 LG |
2053 | // For IKE SA there are four algorithm types. Encryption Algorithm, Pseudo-random Function,\r |
2054 | // Integrity Algorithm, Diffie-Hellman Group. For Child SA, there are three algorithm types.\r | |
9166f840 | 2055 | // Encryption Algorithm, Integrity Algorithm, Extended Sequence Number.\r |
2056 | //\r | |
2057 | case IKEV2_TRANSFORM_TYPE_ENCR:\r | |
2058 | if (*PreferEncryptAlgorithm == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_ENCRYPT_TYPE)) {\r | |
2059 | //\r | |
2060 | // Check the attribute value. According to RFC, only Keylength is support.\r | |
2061 | //\r | |
2062 | if (TransformData->Attribute.AttrType == IKEV2_ATTRIBUTE_TYPE_KEYLEN) {\r | |
2063 | //\r | |
2064 | // If the Keylength is not support, continue to check the next one.\r | |
2065 | //\r | |
2066 | if (IpSecGetEncryptKeyLength ((UINT8)TransformData->TransformId) != (UINTN)(TransformData->Attribute.Attr.AttrValue >> 3)){\r | |
2067 | break;\r | |
2068 | } else {\r | |
2069 | *PreferEncryptKeylength = TransformData->Attribute.Attr.AttrValue;\r | |
2070 | }\r | |
2071 | }\r | |
2072 | *PreferEncryptAlgorithm = TransformData->TransformId;\r | |
2073 | }\r | |
2074 | break;\r | |
2075 | \r | |
2076 | case IKEV2_TRANSFORM_TYPE_PRF :\r | |
2077 | if (!IsChildSa) {\r | |
2078 | if (*PreferPrfAlgorithm == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_PRF_TYPE)) {\r | |
2079 | *PreferPrfAlgorithm = TransformData->TransformId;\r | |
2080 | }\r | |
f75a7f56 | 2081 | }\r |
9166f840 | 2082 | break;\r |
2083 | \r | |
2084 | case IKEV2_TRANSFORM_TYPE_INTEG :\r | |
2085 | if (*PreferIntegrityAlgorithm == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_AUTH_TYPE)) {\r | |
2086 | *PreferIntegrityAlgorithm = TransformData->TransformId;\r | |
2087 | }\r | |
2088 | break;\r | |
f75a7f56 | 2089 | \r |
9166f840 | 2090 | case IKEV2_TRANSFORM_TYPE_DH :\r |
2091 | if (!IsChildSa) {\r | |
2092 | if (*PreferDhGroup == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_DH_TYPE)) {\r | |
2093 | *PreferDhGroup = TransformData->TransformId;\r | |
2094 | }\r | |
f75a7f56 | 2095 | }\r |
9166f840 | 2096 | break;\r |
f75a7f56 | 2097 | \r |
9166f840 | 2098 | case IKEV2_TRANSFORM_TYPE_ESN :\r |
2099 | if (IsChildSa) {\r | |
2100 | if (TransformData->TransformId != 0) {\r | |
2101 | *IsSupportEsn = TRUE;\r | |
2102 | }\r | |
f75a7f56 | 2103 | }\r |
9166f840 | 2104 | break;\r |
2105 | \r | |
2106 | default:\r | |
2107 | break;\r | |
2108 | }\r | |
2109 | TransformData = (IKEV2_TRANSFORM_DATA *)(TransformData + 1);\r | |
2110 | }\r | |
2111 | }\r | |
2112 | \r | |
2113 | /**\r | |
2114 | Parse the received Initial Exchange Packet.\r | |
f75a7f56 LG |
2115 | \r |
2116 | This function parse the SA Payload and Key Payload to find out the cryptographic\r | |
2117 | suite for the further IKE negotiation and fill it into the IKE SA Session's\r | |
9166f840 | 2118 | CommonSession->SaParams.\r |
2119 | \r | |
2120 | @param[in, out] IkeSaSession Pointer to related IKEV2_SA_SESSION.\r | |
2121 | @param[in] SaPayload The received packet.\r | |
f75a7f56 | 2122 | @param[in] Type The received packet IKE header flag.\r |
9166f840 | 2123 | \r |
2124 | @retval TRUE If the SA proposal in Packet is acceptable.\r | |
2125 | @retval FALSE If the SA proposal in Packet is not acceptable.\r | |
2126 | \r | |
2127 | **/\r | |
2128 | BOOLEAN\r | |
2129 | Ikev2SaParseSaPayload (\r | |
2130 | IN OUT IKEV2_SA_SESSION *IkeSaSession,\r | |
2131 | IN IKE_PAYLOAD *SaPayload,\r | |
2132 | IN UINT8 Type\r | |
2133 | )\r | |
2134 | {\r | |
2135 | IKEV2_PROPOSAL_DATA *ProposalData;\r | |
2136 | UINT8 ProposalIndex;\r | |
2137 | UINT16 PreferEncryptAlgorithm;\r | |
2138 | UINT16 PreferIntegrityAlgorithm;\r | |
2139 | UINT16 PreferPrfAlgorithm;\r | |
2140 | UINT16 PreferDhGroup;\r | |
2141 | UINTN PreferEncryptKeylength;\r | |
2142 | UINT16 EncryptAlgorithm;\r | |
2143 | UINT16 IntegrityAlgorithm;\r | |
2144 | UINT16 PrfAlgorithm;\r | |
2145 | UINT16 DhGroup;\r | |
2146 | UINTN EncryptKeylength;\r | |
2147 | BOOLEAN IsMatch;\r | |
2148 | UINTN SaDataSize;\r | |
2149 | \r | |
2150 | PreferPrfAlgorithm = 0;\r | |
2151 | PreferIntegrityAlgorithm = 0;\r | |
2152 | PreferDhGroup = 0;\r | |
2153 | PreferEncryptAlgorithm = 0;\r | |
2154 | PreferEncryptKeylength = 0;\r | |
2155 | PrfAlgorithm = 0;\r | |
2156 | IntegrityAlgorithm = 0;\r | |
2157 | DhGroup = 0;\r | |
2158 | EncryptAlgorithm = 0;\r | |
2159 | EncryptKeylength = 0;\r | |
2160 | IsMatch = FALSE;\r | |
2161 | \r | |
2162 | if (Type == IKE_HEADER_FLAGS_INIT) {\r | |
2163 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *)SaPayload->PayloadBuf + 1);\r | |
2164 | for (ProposalIndex = 0; ProposalIndex < ((IKEV2_SA_DATA *)SaPayload->PayloadBuf)->NumProposals; ProposalIndex++) {\r | |
2165 | //\r | |
2166 | // Iterate each proposal to find the perfered one.\r | |
2167 | //\r | |
2168 | if (ProposalData->ProtocolId == IPSEC_PROTO_ISAKMP && ProposalData->NumTransforms >= 4) {\r | |
2169 | //\r | |
2170 | // Get the preferred algorithms.\r | |
2171 | //\r | |
2172 | Ikev2ParseProposalData (\r | |
f75a7f56 | 2173 | ProposalData,\r |
9166f840 | 2174 | &PreferEncryptAlgorithm,\r |
2175 | &PreferIntegrityAlgorithm,\r | |
2176 | &PreferPrfAlgorithm,\r | |
2177 | &PreferDhGroup,\r | |
2178 | &PreferEncryptKeylength,\r | |
2179 | NULL,\r | |
2180 | FALSE\r | |
2181 | );\r | |
2182 | \r | |
2183 | if (PreferEncryptAlgorithm != 0 &&\r | |
2184 | PreferIntegrityAlgorithm != 0 &&\r | |
f75a7f56 | 2185 | PreferPrfAlgorithm != 0 &&\r |
9166f840 | 2186 | PreferDhGroup != 0\r |
2187 | ) {\r | |
2188 | //\r | |
f75a7f56 | 2189 | // Find the matched one.\r |
9166f840 | 2190 | //\r |
2191 | IkeSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
6b16c9e7 JW |
2192 | if (IkeSaSession->SessionCommon.SaParams == NULL) {\r |
2193 | return FALSE;\r | |
2194 | }\r | |
f75a7f56 | 2195 | \r |
9166f840 | 2196 | IkeSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r |
2197 | IkeSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2198 | IkeSaSession->SessionCommon.SaParams->DhGroup = PreferDhGroup;\r | |
2199 | IkeSaSession->SessionCommon.SaParams->Prf = PreferPrfAlgorithm;\r | |
2200 | IkeSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2201 | IkeSaSession->SessionCommon.PreferDhGroup = PreferDhGroup;\r | |
2202 | \r | |
2203 | //\r | |
2204 | // Save the matched one in IKEV2_SA_DATA for furthure calculation.\r | |
2205 | //\r | |
2206 | SaDataSize = sizeof (IKEV2_SA_DATA) +\r | |
2207 | sizeof (IKEV2_PROPOSAL_DATA) +\r | |
2208 | sizeof (IKEV2_TRANSFORM_DATA) * 4;\r | |
2209 | IkeSaSession->SaData = AllocateZeroPool (SaDataSize);\r | |
6b16c9e7 JW |
2210 | if (IkeSaSession->SaData == NULL) {\r |
2211 | FreePool (IkeSaSession->SessionCommon.SaParams);\r | |
2212 | return FALSE;\r | |
2213 | }\r | |
9166f840 | 2214 | \r |
2215 | IkeSaSession->SaData->NumProposals = 1;\r | |
2216 | \r | |
2217 | //\r | |
2218 | // BUGBUG: Suppose the matched proposal only has 4 transforms. If\r | |
2219 | // The matched Proposal has more than 4 transforms means it contains\r | |
2220 | // one than one transform with same type.\r | |
2221 | //\r | |
2222 | CopyMem (\r | |
f75a7f56 LG |
2223 | (IKEV2_PROPOSAL_DATA *) (IkeSaSession->SaData + 1),\r |
2224 | ProposalData,\r | |
9166f840 | 2225 | SaDataSize - sizeof (IKEV2_SA_DATA)\r |
2226 | );\r | |
2227 | \r | |
2228 | ((IKEV2_PROPOSAL_DATA *) (IkeSaSession->SaData + 1))->ProposalIndex = 1;\r | |
f75a7f56 | 2229 | \r |
9166f840 | 2230 | return TRUE;\r |
2231 | } else {\r | |
2232 | PreferEncryptAlgorithm = 0;\r | |
2233 | PreferIntegrityAlgorithm = 0;\r | |
2234 | PreferPrfAlgorithm = 0;\r | |
2235 | PreferDhGroup = 0;\r | |
2236 | PreferEncryptKeylength = 0;\r | |
2237 | }\r | |
2238 | }\r | |
2239 | //\r | |
2240 | // Point to next Proposal.\r | |
2241 | //\r | |
f75a7f56 | 2242 | ProposalData = (IKEV2_PROPOSAL_DATA*)((UINT8*)(ProposalData + 1) +\r |
9166f840 | 2243 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA));\r |
2244 | }\r | |
2245 | } else if (Type == IKE_HEADER_FLAGS_RESPOND) {\r | |
2246 | //\r | |
f75a7f56 LG |
2247 | // First check the SA proposal's ProtoctolID and Transform Numbers. Since it is\r |
2248 | // the responded SA proposal, suppose it only has one proposal and the transform Numbers\r | |
2249 | // is 4.\r | |
9166f840 | 2250 | //\r |
2251 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *) SaPayload->PayloadBuf + 1);\r | |
2252 | if (ProposalData->ProtocolId != IPSEC_PROTO_ISAKMP || ProposalData->NumTransforms != 4) {\r | |
2253 | return FALSE;\r | |
2254 | }\r | |
2255 | //\r | |
f75a7f56 | 2256 | // Get the preferred algorithms.\r |
9166f840 | 2257 | //\r |
2258 | Ikev2ParseProposalData (\r | |
2259 | ProposalData,\r | |
2260 | &PreferEncryptAlgorithm,\r | |
2261 | &PreferIntegrityAlgorithm,\r | |
2262 | &PreferPrfAlgorithm,\r | |
2263 | &PreferDhGroup,\r | |
2264 | &PreferEncryptKeylength,\r | |
f75a7f56 | 2265 | NULL,\r |
9166f840 | 2266 | FALSE\r |
2267 | );\r | |
f75a7f56 | 2268 | //\r |
9166f840 | 2269 | // Check if the Sa proposal data from received packet is in the IkeSaSession->SaData.\r |
2270 | //\r | |
2271 | ProposalData = (IKEV2_PROPOSAL_DATA *) (IkeSaSession->SaData + 1);\r | |
2272 | \r | |
2273 | for (ProposalIndex = 0; ProposalIndex < IkeSaSession->SaData->NumProposals && (!IsMatch); ProposalIndex++) {\r | |
2274 | Ikev2ParseProposalData (\r | |
f75a7f56 | 2275 | ProposalData,\r |
9166f840 | 2276 | &EncryptAlgorithm,\r |
2277 | &IntegrityAlgorithm,\r | |
2278 | &PrfAlgorithm,\r | |
2279 | &DhGroup,\r | |
2280 | &EncryptKeylength,\r | |
2281 | NULL,\r | |
2282 | FALSE\r | |
2283 | );\r | |
2284 | if (EncryptAlgorithm == PreferEncryptAlgorithm &&\r | |
2285 | EncryptKeylength == PreferEncryptKeylength &&\r | |
2286 | IntegrityAlgorithm == PreferIntegrityAlgorithm &&\r | |
2287 | PrfAlgorithm == PreferPrfAlgorithm &&\r | |
2288 | DhGroup == PreferDhGroup\r | |
2289 | ) {\r | |
2290 | IsMatch = TRUE;\r | |
2291 | } else {\r | |
2292 | EncryptAlgorithm = 0;\r | |
2293 | IntegrityAlgorithm = 0;\r | |
2294 | PrfAlgorithm = 0;\r | |
2295 | DhGroup = 0;\r | |
f75a7f56 | 2296 | EncryptKeylength = 0;\r |
9166f840 | 2297 | }\r |
2298 | \r | |
f75a7f56 LG |
2299 | ProposalData = (IKEV2_PROPOSAL_DATA*)((UINT8*)(ProposalData + 1) +\r |
2300 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA));\r | |
9166f840 | 2301 | }\r |
2302 | \r | |
2303 | if (IsMatch) {\r | |
2304 | IkeSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
6b16c9e7 JW |
2305 | if (IkeSaSession->SessionCommon.SaParams == NULL) {\r |
2306 | return FALSE;\r | |
2307 | }\r | |
f75a7f56 | 2308 | \r |
9166f840 | 2309 | IkeSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r |
2310 | IkeSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2311 | IkeSaSession->SessionCommon.SaParams->DhGroup = PreferDhGroup;\r | |
2312 | IkeSaSession->SessionCommon.SaParams->Prf = PreferPrfAlgorithm;\r | |
2313 | IkeSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2314 | IkeSaSession->SessionCommon.PreferDhGroup = PreferDhGroup;\r | |
f75a7f56 | 2315 | \r |
9166f840 | 2316 | return TRUE;\r |
2317 | }\r | |
2318 | }\r | |
f75a7f56 | 2319 | \r |
9166f840 | 2320 | return FALSE;\r |
2321 | }\r | |
2322 | \r | |
2323 | /**\r | |
2324 | Parse the received Authentication Exchange Packet.\r | |
f75a7f56 | 2325 | \r |
9166f840 | 2326 | This function parse the SA Payload and Key Payload to find out the cryptographic\r |
2327 | suite for the ESP and fill it into the Child SA Session's CommonSession->SaParams.\r | |
f75a7f56 LG |
2328 | \r |
2329 | @param[in, out] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION related to\r | |
9166f840 | 2330 | this Authentication Exchange.\r |
2331 | @param[in] SaPayload The received packet.\r | |
f75a7f56 LG |
2332 | @param[in] Type The IKE header's flag of received packet .\r |
2333 | \r | |
9166f840 | 2334 | @retval TRUE If the SA proposal in Packet is acceptable.\r |
2335 | @retval FALSE If the SA proposal in Packet is not acceptable.\r | |
2336 | \r | |
2337 | **/\r | |
2338 | BOOLEAN\r | |
2339 | Ikev2ChildSaParseSaPayload (\r | |
2340 | IN OUT IKEV2_CHILD_SA_SESSION *ChildSaSession,\r | |
2341 | IN IKE_PAYLOAD *SaPayload,\r | |
2342 | IN UINT8 Type\r | |
2343 | )\r | |
2344 | {\r | |
2345 | IKEV2_PROPOSAL_DATA *ProposalData;\r | |
2346 | UINT8 ProposalIndex;\r | |
2347 | UINT16 PreferEncryptAlgorithm;\r | |
2348 | UINT16 PreferIntegrityAlgorithm;\r | |
2349 | UINTN PreferEncryptKeylength;\r | |
2350 | BOOLEAN PreferIsSupportEsn;\r | |
2351 | UINT16 EncryptAlgorithm;\r | |
2352 | UINT16 IntegrityAlgorithm;\r | |
2353 | UINTN EncryptKeylength;\r | |
2354 | BOOLEAN IsSupportEsn;\r | |
2355 | BOOLEAN IsMatch;\r | |
2356 | UINTN SaDataSize;\r | |
2357 | \r | |
2358 | \r | |
2359 | PreferIntegrityAlgorithm = 0;\r | |
2360 | PreferEncryptAlgorithm = 0;\r | |
2361 | PreferEncryptKeylength = 0;\r | |
2362 | IntegrityAlgorithm = 0;\r | |
2363 | EncryptAlgorithm = 0;\r | |
2364 | EncryptKeylength = 0;\r | |
1e0db7b1 | 2365 | IsMatch = FALSE;\r |
9166f840 | 2366 | IsSupportEsn = FALSE;\r |
2367 | PreferIsSupportEsn = FALSE;\r | |
2368 | \r | |
2369 | if (Type == IKE_HEADER_FLAGS_INIT) {\r | |
2370 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *) SaPayload->PayloadBuf + 1);\r | |
2371 | for (ProposalIndex = 0; ProposalIndex < ((IKEV2_SA_DATA *) SaPayload->PayloadBuf)->NumProposals; ProposalIndex++) {\r | |
2372 | //\r | |
2373 | // Iterate each proposal to find the preferred one.\r | |
2374 | //\r | |
2375 | if (ProposalData->ProtocolId == IPSEC_PROTO_IPSEC_ESP && ProposalData->NumTransforms >= 3) {\r | |
2376 | //\r | |
2377 | // Get the preferred algorithm.\r | |
2378 | //\r | |
2379 | Ikev2ParseProposalData (\r | |
2380 | ProposalData,\r | |
2381 | &PreferEncryptAlgorithm,\r | |
2382 | &PreferIntegrityAlgorithm,\r | |
2383 | NULL,\r | |
2384 | NULL,\r | |
2385 | &PreferEncryptKeylength,\r | |
2386 | &IsSupportEsn,\r | |
2387 | TRUE\r | |
2388 | );\r | |
2389 | //\r | |
2390 | // Don't support the ESN now.\r | |
2391 | //\r | |
f75a7f56 | 2392 | if (PreferEncryptAlgorithm != 0 &&\r |
9166f840 | 2393 | PreferIntegrityAlgorithm != 0 &&\r |
2394 | !IsSupportEsn\r | |
2395 | ) {\r | |
2396 | //\r | |
f75a7f56 | 2397 | // Find the matched one.\r |
9166f840 | 2398 | //\r |
2399 | ChildSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
6b16c9e7 JW |
2400 | if (ChildSaSession->SessionCommon.SaParams == NULL) {\r |
2401 | return FALSE;\r | |
2402 | }\r | |
f75a7f56 | 2403 | \r |
9166f840 | 2404 | ChildSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r |
2405 | ChildSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2406 | ChildSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2407 | CopyMem (&ChildSaSession->RemotePeerSpi, ProposalData->Spi, sizeof (ChildSaSession->RemotePeerSpi));\r | |
2408 | \r | |
2409 | //\r | |
2410 | // Save the matched one in IKEV2_SA_DATA for furthure calculation.\r | |
2411 | //\r | |
2412 | SaDataSize = sizeof (IKEV2_SA_DATA) +\r | |
2413 | sizeof (IKEV2_PROPOSAL_DATA) +\r | |
2414 | sizeof (IKEV2_TRANSFORM_DATA) * 4;\r | |
2415 | \r | |
2416 | ChildSaSession->SaData = AllocateZeroPool (SaDataSize);\r | |
6b16c9e7 JW |
2417 | if (ChildSaSession->SaData == NULL) {\r |
2418 | FreePool (ChildSaSession->SessionCommon.SaParams);\r | |
2419 | return FALSE;\r | |
2420 | }\r | |
9166f840 | 2421 | \r |
2422 | ChildSaSession->SaData->NumProposals = 1;\r | |
2423 | \r | |
2424 | //\r | |
2425 | // BUGBUG: Suppose there are 4 transforms in the matched proposal. If\r | |
f75a7f56 | 2426 | // the matched Proposal has more than 4 transforms that means there\r |
9166f840 | 2427 | // are more than one transform with same type.\r |
2428 | //\r | |
2429 | CopyMem (\r | |
2430 | (IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1),\r | |
2431 | ProposalData,\r | |
2432 | SaDataSize - sizeof (IKEV2_SA_DATA)\r | |
2433 | );\r | |
2434 | \r | |
2435 | ((IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1))->ProposalIndex = 1;\r | |
2436 | \r | |
2437 | ((IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1))->Spi = AllocateCopyPool (\r | |
f75a7f56 | 2438 | sizeof (ChildSaSession->LocalPeerSpi),\r |
9166f840 | 2439 | &ChildSaSession->LocalPeerSpi\r |
2440 | );\r | |
6b16c9e7 JW |
2441 | if (((IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1))->Spi == NULL) {\r |
2442 | FreePool (ChildSaSession->SessionCommon.SaParams);\r | |
2443 | \r | |
2444 | FreePool (ChildSaSession->SaData );\r | |
f75a7f56 | 2445 | \r |
6b16c9e7 JW |
2446 | return FALSE;\r |
2447 | }\r | |
f75a7f56 | 2448 | \r |
9166f840 | 2449 | return TRUE;\r |
2450 | \r | |
2451 | } else {\r | |
2452 | PreferEncryptAlgorithm = 0;\r | |
2453 | PreferIntegrityAlgorithm = 0;\r | |
2454 | IsSupportEsn = TRUE;\r | |
2455 | }\r | |
2456 | }\r | |
2457 | //\r | |
2458 | // Point to next Proposal\r | |
2459 | //\r | |
f75a7f56 | 2460 | ProposalData = (IKEV2_PROPOSAL_DATA *)((UINT8 *)(ProposalData + 1) +\r |
9166f840 | 2461 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA));\r |
2462 | }\r | |
2463 | } else if (Type == IKE_HEADER_FLAGS_RESPOND) {\r | |
2464 | //\r | |
f75a7f56 LG |
2465 | // First check the SA proposal's ProtoctolID and Transform Numbers. Since it is\r |
2466 | // the responded SA proposal, suppose it only has one proposal and the transform Numbers\r | |
2467 | // is 3.\r | |
9166f840 | 2468 | //\r |
2469 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *)SaPayload->PayloadBuf + 1);\r | |
2470 | if (ProposalData->ProtocolId != IPSEC_PROTO_IPSEC_ESP || ProposalData->NumTransforms != 3) {\r | |
2471 | return FALSE;\r | |
2472 | }\r | |
2473 | //\r | |
2474 | // Get the preferred algorithms.\r | |
2475 | //\r | |
2476 | Ikev2ParseProposalData (\r | |
2477 | ProposalData,\r | |
2478 | &PreferEncryptAlgorithm,\r | |
2479 | &PreferIntegrityAlgorithm,\r | |
2480 | NULL,\r | |
2481 | NULL,\r | |
2482 | &PreferEncryptKeylength,\r | |
2483 | &PreferIsSupportEsn,\r | |
2484 | TRUE\r | |
2485 | );\r | |
2486 | \r | |
2487 | ProposalData = (IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1);\r | |
2488 | \r | |
2489 | for (ProposalIndex = 0; ProposalIndex < ChildSaSession->SaData->NumProposals && (!IsMatch); ProposalIndex++) {\r | |
2490 | Ikev2ParseProposalData (\r | |
f75a7f56 | 2491 | ProposalData,\r |
9166f840 | 2492 | &EncryptAlgorithm,\r |
2493 | &IntegrityAlgorithm,\r | |
2494 | NULL,\r | |
2495 | NULL,\r | |
2496 | &EncryptKeylength,\r | |
2497 | &IsSupportEsn,\r | |
2498 | TRUE\r | |
2499 | );\r | |
2500 | if (EncryptAlgorithm == PreferEncryptAlgorithm &&\r | |
2501 | EncryptKeylength == PreferEncryptKeylength &&\r | |
2502 | IntegrityAlgorithm == PreferIntegrityAlgorithm &&\r | |
f75a7f56 | 2503 | IsSupportEsn == PreferIsSupportEsn\r |
9166f840 | 2504 | ) {\r |
2505 | IsMatch = TRUE;\r | |
2506 | } else {\r | |
2507 | PreferEncryptAlgorithm = 0;\r | |
2508 | PreferIntegrityAlgorithm = 0;\r | |
2509 | IsSupportEsn = TRUE;\r | |
2510 | }\r | |
f75a7f56 LG |
2511 | ProposalData = (IKEV2_PROPOSAL_DATA*)((UINT8*)(ProposalData + 1) +\r |
2512 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA));\r | |
9166f840 | 2513 | }\r |
f75a7f56 | 2514 | \r |
9166f840 | 2515 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *)SaPayload->PayloadBuf + 1);\r |
2516 | if (IsMatch) {\r | |
2517 | ChildSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
6b16c9e7 JW |
2518 | if (ChildSaSession->SessionCommon.SaParams == NULL) {\r |
2519 | return FALSE;\r | |
2520 | }\r | |
f75a7f56 | 2521 | \r |
9166f840 | 2522 | ChildSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r |
2523 | ChildSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2524 | ChildSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2525 | CopyMem (&ChildSaSession->RemotePeerSpi, ProposalData->Spi, sizeof (ChildSaSession->RemotePeerSpi));\r | |
2526 | \r | |
2527 | return TRUE;\r | |
2528 | }\r | |
2529 | }\r | |
2530 | return FALSE;\r | |
2531 | }\r | |
2532 | \r | |
2533 | /**\r | |
2534 | Generate Key buffer from fragments.\r | |
2535 | \r | |
f75a7f56 LG |
2536 | If the digest length of specified HashAlgId is larger than or equal with the\r |
2537 | required output key length, derive the key directly. Otherwise, Key Material\r | |
2538 | needs to be PRF-based concatenation according to 2.13 of RFC 4306:\r | |
9166f840 | 2539 | prf+ (K,S) = T1 | T2 | T3 | T4 | ..., T1 = prf (K, S | 0x01),\r |
2540 | T2 = prf (K, T1 | S | 0x02), T3 = prf (K, T2 | S | 0x03),T4 = prf (K, T3 | S | 0x04)\r | |
2541 | then derive the key from this key material.\r | |
f75a7f56 | 2542 | \r |
9166f840 | 2543 | @param[in] HashAlgId The Hash Algorithm ID used to generate key.\r |
2544 | @param[in] HashKey Pointer to a key buffer which contains hash key.\r | |
2545 | @param[in] HashKeyLength The length of HashKey in bytes.\r | |
f75a7f56 | 2546 | @param[in, out] OutputKey Pointer to buffer which is used to receive the\r |
9166f840 | 2547 | output key.\r |
2548 | @param[in] OutputKeyLength The length of OutPutKey buffer.\r | |
2549 | @param[in] Fragments Pointer to the data to be used to generate key.\r | |
2550 | @param[in] NumFragments The numbers of the Fragement.\r | |
2551 | \r | |
2552 | @retval EFI_SUCCESS The operation complete successfully.\r | |
2553 | @retval EFI_INVALID_PARAMETER If NumFragments is zero.\r | |
ce8e582c HW |
2554 | If the authentication algorithm given by HashAlgId\r |
2555 | cannot be found.\r | |
9166f840 | 2556 | @retval EFI_OUT_OF_RESOURCES If the required resource can't be allocated.\r |
2557 | @retval Others The operation is failed.\r | |
2558 | \r | |
2559 | **/\r | |
2560 | EFI_STATUS\r | |
2561 | Ikev2SaGenerateKey (\r | |
2562 | IN UINT8 HashAlgId,\r | |
2563 | IN UINT8 *HashKey,\r | |
2564 | IN UINTN HashKeyLength,\r | |
2565 | IN OUT UINT8 *OutputKey,\r | |
2566 | IN UINTN OutputKeyLength,\r | |
2567 | IN PRF_DATA_FRAGMENT *Fragments,\r | |
2568 | IN UINTN NumFragments\r | |
2569 | )\r | |
2570 | {\r | |
2571 | EFI_STATUS Status;\r | |
2572 | PRF_DATA_FRAGMENT LocalFragments[3];\r | |
2573 | UINT8 *Digest;\r | |
2574 | UINTN DigestSize;\r | |
2575 | UINTN Round;\r | |
2576 | UINTN Index;\r | |
2577 | UINTN AuthKeyLength;\r | |
2578 | UINTN FragmentsSize;\r | |
2579 | UINT8 TailData;\r | |
2580 | \r | |
2581 | Status = EFI_SUCCESS;\r | |
2582 | \r | |
2583 | if (NumFragments == 0) {\r | |
2584 | return EFI_INVALID_PARAMETER;\r | |
2585 | }\r | |
2586 | \r | |
2587 | LocalFragments[0].Data = NULL;\r | |
2588 | LocalFragments[1].Data = NULL;\r | |
2589 | LocalFragments[2].Data = NULL;\r | |
2590 | \r | |
2591 | AuthKeyLength = IpSecGetHmacDigestLength (HashAlgId);\r | |
ce8e582c HW |
2592 | if (AuthKeyLength == 0) {\r |
2593 | return EFI_INVALID_PARAMETER;\r | |
2594 | }\r | |
2595 | \r | |
9166f840 | 2596 | DigestSize = AuthKeyLength;\r |
2597 | Digest = AllocateZeroPool (AuthKeyLength);\r | |
2598 | \r | |
2599 | if (Digest == NULL) {\r | |
2600 | return EFI_OUT_OF_RESOURCES;\r | |
2601 | }\r | |
2602 | //\r | |
2603 | // If the required output key length is less than the digest size,\r | |
2604 | // copy the digest into OutputKey.\r | |
2605 | //\r | |
2606 | if (OutputKeyLength <= DigestSize) {\r | |
2607 | Status = IpSecCryptoIoHmac (\r | |
2608 | HashAlgId,\r | |
f75a7f56 LG |
2609 | HashKey,\r |
2610 | HashKeyLength,\r | |
2611 | (HASH_DATA_FRAGMENT *) Fragments,\r | |
2612 | NumFragments,\r | |
2613 | Digest,\r | |
9166f840 | 2614 | DigestSize\r |
2615 | );\r | |
2616 | if (EFI_ERROR (Status)) {\r | |
2617 | goto Exit;\r | |
2618 | }\r | |
2619 | \r | |
2620 | CopyMem (OutputKey, Digest, OutputKeyLength);\r | |
2621 | goto Exit;\r | |
2622 | }\r | |
2623 | \r | |
2624 | //\r | |
2625 | //Otherwise, Key Material need to be PRF-based concatenation according to 2.13\r | |
2626 | //of RFC 4306: prf+ (K,S) = T1 | T2 | T3 | T4 | ..., T1 = prf (K, S | 0x01),\r | |
2627 | //T2 = prf (K, T1 | S | 0x02), T3 = prf (K, T2 | S | 0x03),T4 = prf (K, T3 | S | 0x04)\r | |
2628 | //then derive the key from this key material.\r | |
2629 | //\r | |
2630 | FragmentsSize = 0;\r | |
2631 | for (Index = 0; Index < NumFragments; Index++) {\r | |
2632 | FragmentsSize = FragmentsSize + Fragments[Index].DataSize;\r | |
2633 | }\r | |
2634 | \r | |
2635 | LocalFragments[1].Data = AllocateZeroPool (FragmentsSize);\r | |
6b16c9e7 JW |
2636 | if (LocalFragments[1].Data == NULL) {\r |
2637 | Status = EFI_OUT_OF_RESOURCES;\r | |
2638 | goto Exit;\r | |
2639 | }\r | |
f75a7f56 | 2640 | \r |
9166f840 | 2641 | LocalFragments[1].DataSize = FragmentsSize;\r |
2642 | \r | |
2643 | //\r | |
2644 | // Copy all input fragments into LocalFragments[1];\r | |
2645 | //\r | |
2646 | FragmentsSize = 0;\r | |
2647 | for (Index = 0; Index < NumFragments; Index++) {\r | |
2648 | CopyMem (\r | |
f75a7f56 | 2649 | LocalFragments[1].Data + FragmentsSize,\r |
9166f840 | 2650 | Fragments[Index].Data,\r |
2651 | Fragments[Index].DataSize\r | |
2652 | );\r | |
2653 | FragmentsSize = FragmentsSize + Fragments[Index].DataSize;\r | |
2654 | }\r | |
2655 | \r | |
2656 | //\r | |
2657 | // Prepare 0x01 as the first tail data.\r | |
2658 | //\r | |
2659 | TailData = 0x01;\r | |
2660 | LocalFragments[2].Data = &TailData;\r | |
2661 | LocalFragments[2].DataSize = sizeof (TailData);\r | |
2662 | //\r | |
2663 | // Allocate buffer for the first fragment\r | |
2664 | //\r | |
2665 | LocalFragments[0].Data = AllocateZeroPool (AuthKeyLength);\r | |
6b16c9e7 JW |
2666 | if (LocalFragments[0].Data == NULL) {\r |
2667 | Status = EFI_OUT_OF_RESOURCES;\r | |
2668 | goto Exit;\r | |
2669 | }\r | |
f75a7f56 | 2670 | \r |
9166f840 | 2671 | LocalFragments[0].DataSize = AuthKeyLength;\r |
2672 | \r | |
2673 | Round = (OutputKeyLength - 1) / AuthKeyLength + 1;\r | |
2674 | for (Index = 0; Index < Round; Index++) {\r | |
2675 | Status = IpSecCryptoIoHmac (\r | |
f75a7f56 LG |
2676 | HashAlgId,\r |
2677 | HashKey,\r | |
2678 | HashKeyLength,\r | |
9166f840 | 2679 | (HASH_DATA_FRAGMENT *)(Index == 0 ? &LocalFragments[1] : LocalFragments),\r |
f75a7f56 | 2680 | Index == 0 ? 2 : 3,\r |
9166f840 | 2681 | Digest,\r |
2682 | DigestSize\r | |
2683 | );\r | |
2684 | if (EFI_ERROR(Status)) {\r | |
2685 | goto Exit;\r | |
2686 | }\r | |
2687 | CopyMem (\r | |
f75a7f56 LG |
2688 | LocalFragments[0].Data,\r |
2689 | Digest,\r | |
9166f840 | 2690 | DigestSize\r |
2691 | );\r | |
2692 | if (OutputKeyLength > DigestSize * (Index + 1)) {\r | |
2693 | CopyMem (\r | |
f75a7f56 LG |
2694 | OutputKey + Index * DigestSize,\r |
2695 | Digest,\r | |
9166f840 | 2696 | DigestSize\r |
2697 | );\r | |
2698 | LocalFragments[0].DataSize = DigestSize;\r | |
2699 | TailData ++;\r | |
2700 | } else {\r | |
f75a7f56 | 2701 | //\r |
9166f840 | 2702 | // The last round\r |
2703 | //\r | |
2704 | CopyMem (\r | |
f75a7f56 LG |
2705 | OutputKey + Index * DigestSize,\r |
2706 | Digest,\r | |
9166f840 | 2707 | OutputKeyLength - Index * DigestSize\r |
2708 | );\r | |
2709 | }\r | |
2710 | }\r | |
2711 | \r | |
2712 | Exit:\r | |
2713 | //\r | |
2714 | // Only First and second Framgement Data need to be freed.\r | |
2715 | //\r | |
2716 | for (Index = 0 ; Index < 2; Index++) {\r | |
2717 | if (LocalFragments[Index].Data != NULL) {\r | |
2718 | FreePool (LocalFragments[Index].Data);\r | |
2719 | }\r | |
2720 | }\r | |
2721 | if (Digest != NULL) {\r | |
2722 | FreePool (Digest);\r | |
2723 | }\r | |
2724 | return Status;\r | |
2725 | }\r | |
2726 | \r |