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9166f840 | 1 | /** @file\r |
2 | The Common operations used by IKE Exchange Process.\r | |
3 | \r | |
02a758cb | 4 | Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>\r |
9166f840 | 5 | \r |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php.\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include "Utility.h"\r | |
17 | #include "IpSecDebug.h"\r | |
18 | #include "IkeService.h"\r | |
19 | #include "IpSecConfigImpl.h"\r | |
20 | \r | |
21 | UINT16 mIkev2EncryptAlgorithmList[IKEV2_SUPPORT_ENCRYPT_ALGORITHM_NUM] = {\r | |
22 | IKEV2_TRANSFORM_ID_ENCR_3DES,\r | |
23 | IKEV2_TRANSFORM_ID_ENCR_AES_CBC, \r | |
24 | };\r | |
25 | \r | |
26 | UINT16 mIkev2PrfAlgorithmList[IKEV2_SUPPORT_PRF_ALGORITHM_NUM] = {\r | |
27 | IKEV2_TRANSFORM_ID_PRF_HMAC_SHA1,\r | |
28 | };\r | |
29 | \r | |
30 | UINT16 mIkev2DhGroupAlgorithmList[IKEV2_SUPPORT_DH_ALGORITHM_NUM] = {\r | |
31 | IKEV2_TRANSFORM_ID_DH_1024MODP,\r | |
32 | IKEV2_TRANSFORM_ID_DH_2048MODP,\r | |
33 | };\r | |
34 | \r | |
35 | UINT16 mIkev2AuthAlgorithmList[IKEV2_SUPPORT_AUTH_ALGORITHM_NUM] = {\r | |
36 | IKEV2_TRANSFORM_ID_AUTH_HMAC_SHA1_96,\r | |
37 | };\r | |
38 | \r | |
39 | /**\r | |
40 | Allocate buffer for IKEV2_SA_SESSION and initialize it.\r | |
41 | \r | |
42 | @param[in] Private Pointer to IPSEC_PRIVATE_DATA.\r | |
43 | @param[in] UdpService Pointer to IKE_UDP_SERVICE related to this IKE SA Session.\r | |
44 | \r | |
45 | @return Pointer to IKEV2_SA_SESSION or NULL.\r | |
46 | \r | |
47 | **/\r | |
48 | IKEV2_SA_SESSION *\r | |
49 | Ikev2SaSessionAlloc (\r | |
50 | IN IPSEC_PRIVATE_DATA *Private,\r | |
51 | IN IKE_UDP_SERVICE *UdpService\r | |
52 | )\r | |
53 | {\r | |
54 | EFI_STATUS Status;\r | |
55 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
56 | IKEV2_SA_SESSION *IkeSaSession;\r | |
57 | \r | |
58 | IkeSaSession = AllocateZeroPool (sizeof (IKEV2_SA_SESSION));\r | |
59 | ASSERT (IkeSaSession != NULL);\r | |
60 | \r | |
61 | //\r | |
62 | // Initialize the fields of IkeSaSession and its SessionCommon.\r | |
63 | //\r | |
64 | IkeSaSession->NCookie = NULL;\r | |
65 | IkeSaSession->Signature = IKEV2_SA_SESSION_SIGNATURE;\r | |
66 | IkeSaSession->InitiatorCookie = IkeGenerateCookie ();\r | |
67 | IkeSaSession->ResponderCookie = 0;\r | |
68 | //\r | |
69 | // BUGBUG: Message ID starts from 2 is to match the OpenSwan requirement, but it \r | |
70 | // might not match the IPv6 Logo. In its test specification, it mentions that\r | |
71 | // the Message ID should start from zero after the IKE_SA_INIT exchange.\r | |
72 | //\r | |
73 | IkeSaSession->MessageId = 2;\r | |
74 | SessionCommon = &IkeSaSession->SessionCommon;\r | |
75 | SessionCommon->UdpService = UdpService;\r | |
76 | SessionCommon->Private = Private;\r | |
77 | SessionCommon->IkeSessionType = IkeSessionTypeIkeSa;\r | |
78 | SessionCommon->IkeVer = 2;\r | |
79 | SessionCommon->AfterEncodePayload = NULL;\r | |
80 | SessionCommon->BeforeDecodePayload = NULL;\r | |
81 | \r | |
82 | //\r | |
83 | // Create a resend notfiy event for retry.\r | |
84 | //\r | |
85 | Status = gBS->CreateEvent (\r | |
86 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
87 | TPL_CALLBACK,\r | |
88 | Ikev2ResendNotify,\r | |
89 | SessionCommon,\r | |
90 | &SessionCommon->TimeoutEvent\r | |
91 | );\r | |
92 | \r | |
93 | if (EFI_ERROR (Status)) {\r | |
94 | FreePool (IkeSaSession);\r | |
95 | return NULL;\r | |
96 | }\r | |
97 | \r | |
98 | //\r | |
99 | // Initialize the lists in IkeSaSession.\r | |
100 | //\r | |
101 | InitializeListHead (&IkeSaSession->ChildSaSessionList);\r | |
102 | InitializeListHead (&IkeSaSession->ChildSaEstablishSessionList);\r | |
103 | InitializeListHead (&IkeSaSession->InfoMIDList);\r | |
104 | InitializeListHead (&IkeSaSession->DeleteSaList);\r | |
105 | \r | |
106 | return IkeSaSession;\r | |
107 | }\r | |
108 | \r | |
109 | /**\r | |
110 | Register the established IKEv2 SA into Private->Ikev2EstablishedList. If there is\r | |
111 | IKEV2_SA_SESSION with same remote peer IP, remove the old one then register the\r | |
112 | new one.\r | |
113 | \r | |
114 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION to be registered.\r | |
115 | @param[in] Private Pointer to IPSEC_PRAVATE_DATA.\r | |
116 | \r | |
117 | **/\r | |
118 | VOID\r | |
119 | Ikev2SaSessionReg (\r | |
120 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
121 | IN IPSEC_PRIVATE_DATA *Private\r | |
122 | )\r | |
123 | {\r | |
124 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
125 | IKEV2_SA_SESSION *OldIkeSaSession;\r | |
126 | EFI_STATUS Status;\r | |
127 | UINT64 Lifetime;\r | |
128 | \r | |
129 | //\r | |
130 | // Keep IKE SA exclusive to remote ip address.\r | |
131 | //\r | |
132 | SessionCommon = &IkeSaSession->SessionCommon;\r | |
133 | OldIkeSaSession = Ikev2SaSessionRemove (&Private->Ikev2EstablishedList, &SessionCommon->RemotePeerIp);\r | |
134 | if (OldIkeSaSession != NULL) {\r | |
135 | //\r | |
136 | // TODO: It should delete all child SAs if rekey the IKE SA.\r | |
137 | //\r | |
138 | Ikev2SaSessionFree (OldIkeSaSession);\r | |
139 | }\r | |
140 | \r | |
141 | //\r | |
142 | // Cleanup the fields of SessionCommon for processing.\r | |
143 | // \r | |
144 | Ikev2SessionCommonRefresh (SessionCommon);\r | |
145 | \r | |
146 | //\r | |
147 | // Insert the ready IKE SA session into established list.\r | |
148 | //\r | |
149 | Ikev2SaSessionInsert (&Private->Ikev2EstablishedList, IkeSaSession, &SessionCommon->RemotePeerIp);\r | |
150 | \r | |
151 | //\r | |
152 | // Create a notfiy event for the IKE SA life time counting.\r | |
153 | //\r | |
154 | Status = gBS->CreateEvent (\r | |
155 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
156 | TPL_CALLBACK,\r | |
157 | Ikev2LifetimeNotify,\r | |
158 | SessionCommon,\r | |
159 | &SessionCommon->TimeoutEvent\r | |
160 | );\r | |
161 | if (EFI_ERROR(Status)){\r | |
162 | //\r | |
163 | // If TimerEvent creation failed, the SA will be alive untill user disable it or \r | |
164 | // receiving a Delete Payload from peer. \r | |
165 | //\r | |
166 | return;\r | |
167 | }\r | |
168 | \r | |
169 | //\r | |
170 | // Start to count the lifetime of the IKE SA.\r | |
171 | //\r | |
172 | if (IkeSaSession->Spd->Data->ProcessingPolicy->SaLifetime.HardLifetime == 0) {\r | |
173 | Lifetime = IKE_SA_DEFAULT_LIFETIME;\r | |
174 | } else {\r | |
175 | Lifetime = IkeSaSession->Spd->Data->ProcessingPolicy->SaLifetime.HardLifetime;\r | |
176 | }\r | |
177 | \r | |
178 | Status = gBS->SetTimer (\r | |
179 | SessionCommon->TimeoutEvent,\r | |
180 | TimerRelative,\r | |
181 | MultU64x32(Lifetime, 10000000) // ms->100ns\r | |
182 | );\r | |
183 | if (EFI_ERROR(Status)){\r | |
184 | //\r | |
185 | // If SetTimer failed, the SA will be alive untill user disable it or \r | |
186 | // receiving a Delete Payload from peer. \r | |
187 | //\r | |
188 | return ;\r | |
189 | }\r | |
190 | \r | |
191 | DEBUG ((\r | |
192 | DEBUG_INFO,\r | |
193 | "\n------IkeSa established and start to count down %d seconds lifetime\n",\r | |
194 | Lifetime\r | |
195 | ));\r | |
196 | \r | |
197 | return ;\r | |
198 | }\r | |
199 | \r | |
200 | /**\r | |
201 | Find a IKEV2_SA_SESSION by the remote peer IP.\r | |
202 | \r | |
203 | @param[in] SaSessionList SaSession List to be searched.\r | |
204 | @param[in] RemotePeerIp Pointer to specified IP address.\r | |
205 | \r | |
206 | @return Pointer to IKEV2_SA_SESSION if find one or NULL.\r | |
207 | \r | |
208 | **/\r | |
209 | IKEV2_SA_SESSION *\r | |
210 | Ikev2SaSessionLookup (\r | |
211 | IN LIST_ENTRY *SaSessionList,\r | |
212 | IN EFI_IP_ADDRESS *RemotePeerIp\r | |
213 | )\r | |
214 | {\r | |
215 | LIST_ENTRY *Entry;\r | |
216 | IKEV2_SA_SESSION *IkeSaSession;\r | |
217 | \r | |
218 | NET_LIST_FOR_EACH (Entry, SaSessionList) {\r | |
219 | IkeSaSession = IKEV2_SA_SESSION_BY_SESSION (Entry);\r | |
220 | \r | |
221 | if (CompareMem (\r | |
222 | &IkeSaSession->SessionCommon.RemotePeerIp,\r | |
223 | RemotePeerIp,\r | |
224 | sizeof (EFI_IP_ADDRESS)\r | |
225 | ) == 0) {\r | |
226 | \r | |
227 | return IkeSaSession;\r | |
228 | }\r | |
229 | }\r | |
230 | \r | |
231 | return NULL;\r | |
232 | }\r | |
233 | \r | |
234 | /**\r | |
235 | Insert a IKE_SA_SESSION into IkeSaSession list. The IkeSaSession list is either\r | |
236 | Private->Ikev2SaSession list or Private->Ikev2EstablishedList list.\r | |
237 | \r | |
238 | @param[in] SaSessionList Pointer to list to be inserted into.\r | |
239 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION to be inserted. \r | |
240 | @param[in] RemotePeerIp Pointer to EFI_IP_ADDRESSS to indicate the \r | |
241 | unique IKEV2_SA_SESSION.\r | |
242 | \r | |
243 | **/\r | |
244 | VOID\r | |
245 | Ikev2SaSessionInsert (\r | |
246 | IN LIST_ENTRY *SaSessionList,\r | |
247 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
248 | IN EFI_IP_ADDRESS *RemotePeerIp\r | |
249 | )\r | |
250 | {\r | |
251 | Ikev2SaSessionRemove (SaSessionList, RemotePeerIp);\r | |
252 | InsertTailList (SaSessionList, &IkeSaSession->BySessionTable);\r | |
253 | }\r | |
254 | \r | |
255 | /**\r | |
256 | Remove the SA Session by Remote Peer IP.\r | |
257 | \r | |
258 | @param[in] SaSessionList Pointer to list to be searched.\r | |
259 | @param[in] RemotePeerIp Pointer to EFI_IP_ADDRESS to use for SA Session search.\r | |
260 | \r | |
261 | @retval Pointer to IKEV2_SA_SESSION with the specified remote IP address or NULL. \r | |
262 | \r | |
263 | **/\r | |
264 | IKEV2_SA_SESSION *\r | |
265 | Ikev2SaSessionRemove (\r | |
266 | IN LIST_ENTRY *SaSessionList,\r | |
267 | IN EFI_IP_ADDRESS *RemotePeerIp\r | |
268 | )\r | |
269 | {\r | |
270 | LIST_ENTRY *Entry;\r | |
271 | IKEV2_SA_SESSION *IkeSaSession;\r | |
272 | \r | |
273 | NET_LIST_FOR_EACH (Entry, SaSessionList) {\r | |
274 | IkeSaSession = IKEV2_SA_SESSION_BY_SESSION (Entry);\r | |
275 | \r | |
276 | if (CompareMem (\r | |
277 | &IkeSaSession->SessionCommon.RemotePeerIp,\r | |
278 | RemotePeerIp,\r | |
279 | sizeof (EFI_IP_ADDRESS)\r | |
280 | ) == 0) {\r | |
281 | \r | |
282 | RemoveEntryList (Entry);\r | |
283 | return IkeSaSession;\r | |
284 | }\r | |
285 | }\r | |
286 | \r | |
287 | return NULL;\r | |
288 | }\r | |
289 | \r | |
290 | /**\r | |
291 | Marking a SA session as on deleting.\r | |
292 | \r | |
293 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION.\r | |
294 | \r | |
295 | @retval EFI_SUCCESS Find the related SA session and marked it.\r | |
296 | \r | |
297 | **/\r | |
298 | EFI_STATUS\r | |
299 | Ikev2SaSessionOnDeleting (\r | |
300 | IN IKEV2_SA_SESSION *IkeSaSession\r | |
301 | )\r | |
302 | {\r | |
303 | return EFI_SUCCESS;\r | |
304 | }\r | |
305 | \r | |
306 | /**\r | |
307 | Free specified Seession Common. The session common would belong to a IKE SA or \r | |
308 | a Child SA.\r | |
309 | \r | |
310 | @param[in] SessionCommon Pointer to a Session Common.\r | |
311 | \r | |
312 | **/\r | |
313 | VOID\r | |
314 | Ikev2SaSessionCommonFree (\r | |
315 | IN IKEV2_SESSION_COMMON *SessionCommon\r | |
316 | )\r | |
317 | {\r | |
318 | \r | |
319 | ASSERT (SessionCommon != NULL);\r | |
320 | \r | |
321 | if (SessionCommon->LastSentPacket != NULL) {\r | |
322 | IkePacketFree (SessionCommon->LastSentPacket);\r | |
323 | }\r | |
324 | \r | |
325 | if (SessionCommon->SaParams != NULL) {\r | |
326 | FreePool (SessionCommon->SaParams);\r | |
327 | }\r | |
328 | if (SessionCommon->TimeoutEvent != NULL) {\r | |
329 | gBS->CloseEvent (SessionCommon->TimeoutEvent);\r | |
330 | }\r | |
331 | }\r | |
332 | \r | |
333 | /**\r | |
334 | After IKE/Child SA is estiblished, close the time event and free sent packet.\r | |
335 | \r | |
336 | @param[in] SessionCommon Pointer to a Session Common.\r | |
337 | \r | |
338 | **/\r | |
339 | VOID\r | |
340 | Ikev2SessionCommonRefresh (\r | |
341 | IN IKEV2_SESSION_COMMON *SessionCommon\r | |
342 | )\r | |
343 | {\r | |
344 | ASSERT (SessionCommon != NULL);\r | |
345 | \r | |
346 | gBS->CloseEvent (SessionCommon->TimeoutEvent);\r | |
347 | SessionCommon->TimeoutEvent = NULL;\r | |
348 | SessionCommon->TimeoutInterval = 0;\r | |
349 | SessionCommon->RetryCount = 0;\r | |
350 | if (SessionCommon->LastSentPacket != NULL) {\r | |
351 | IkePacketFree (SessionCommon->LastSentPacket);\r | |
352 | SessionCommon->LastSentPacket = NULL;\r | |
353 | }\r | |
354 | \r | |
355 | return ;\r | |
356 | }\r | |
357 | /**\r | |
358 | Free specified IKEV2 SA Session. \r | |
359 | \r | |
360 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION to be freed.\r | |
361 | \r | |
362 | **/\r | |
363 | VOID\r | |
364 | Ikev2SaSessionFree (\r | |
365 | IN IKEV2_SA_SESSION *IkeSaSession\r | |
366 | )\r | |
367 | {\r | |
368 | IKEV2_SESSION_KEYS *IkeKeys;\r | |
369 | LIST_ENTRY *Entry;\r | |
370 | IKEV2_CHILD_SA_SESSION *ChildSa;\r | |
371 | IKEV2_DH_BUFFER *DhBuffer;\r | |
372 | \r | |
373 | ASSERT (IkeSaSession != NULL);\r | |
374 | \r | |
375 | //\r | |
376 | // Delete Common Session\r | |
377 | //\r | |
378 | Ikev2SaSessionCommonFree (&IkeSaSession->SessionCommon);\r | |
379 | \r | |
380 | //\r | |
381 | // Delete ChildSaEstablish List and SAD\r | |
382 | //\r | |
383 | for (Entry = IkeSaSession->ChildSaEstablishSessionList.ForwardLink;\r | |
384 | Entry != &IkeSaSession->ChildSaEstablishSessionList;\r | |
385 | ) {\r | |
386 | \r | |
387 | ChildSa = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
388 | Entry = Entry->ForwardLink;\r | |
389 | Ikev2ChildSaSilentDelete (ChildSa->IkeSaSession, ChildSa->LocalPeerSpi);\r | |
390 | \r | |
391 | }\r | |
392 | \r | |
393 | //\r | |
394 | // Delete ChildSaSessionList\r | |
395 | //\r | |
396 | for ( Entry = IkeSaSession->ChildSaSessionList.ForwardLink;\r | |
397 | Entry != &IkeSaSession->ChildSaSessionList;\r | |
398 | ){\r | |
399 | ChildSa = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
400 | Entry = Entry->ForwardLink;\r | |
401 | RemoveEntryList (Entry->BackLink);\r | |
402 | Ikev2ChildSaSessionFree (ChildSa);\r | |
403 | }\r | |
404 | \r | |
405 | //\r | |
406 | // Delete DhBuffer and Keys\r | |
407 | //\r | |
408 | if (IkeSaSession->IkeKeys != NULL) {\r | |
409 | IkeKeys = IkeSaSession->IkeKeys;\r | |
410 | DhBuffer = IkeKeys->DhBuffer;\r | |
411 | \r | |
412 | //\r | |
413 | // Delete DhBuffer\r | |
414 | //\r | |
415 | Ikev2DhBufferFree (DhBuffer);\r | |
416 | \r | |
417 | //\r | |
418 | // Delete Keys\r | |
419 | // \r | |
420 | if (IkeKeys->SkAiKey != NULL) {\r | |
421 | FreePool (IkeKeys->SkAiKey);\r | |
422 | }\r | |
423 | if (IkeKeys->SkArKey != NULL) {\r | |
424 | FreePool (IkeKeys->SkArKey);\r | |
425 | }\r | |
426 | if (IkeKeys->SkdKey != NULL) {\r | |
427 | FreePool (IkeKeys->SkdKey);\r | |
428 | }\r | |
429 | if (IkeKeys->SkEiKey != NULL) {\r | |
430 | FreePool (IkeKeys->SkEiKey);\r | |
431 | }\r | |
432 | if (IkeKeys->SkErKey != NULL) {\r | |
433 | FreePool (IkeKeys->SkErKey);\r | |
434 | }\r | |
435 | if (IkeKeys->SkPiKey != NULL) {\r | |
436 | FreePool (IkeKeys->SkPiKey);\r | |
437 | }\r | |
438 | if (IkeKeys->SkPrKey != NULL) {\r | |
439 | FreePool (IkeKeys->SkPrKey);\r | |
440 | }\r | |
441 | FreePool (IkeKeys);\r | |
442 | }\r | |
443 | \r | |
444 | if (IkeSaSession->SaData != NULL) {\r | |
445 | FreePool (IkeSaSession->SaData);\r | |
446 | }\r | |
447 | \r | |
448 | if (IkeSaSession->NiBlock != NULL) {\r | |
449 | FreePool (IkeSaSession->NiBlock);\r | |
450 | }\r | |
451 | \r | |
452 | if (IkeSaSession->NrBlock != NULL) {\r | |
453 | FreePool (IkeSaSession->NrBlock);\r | |
454 | }\r | |
455 | \r | |
456 | if (IkeSaSession->NCookie != NULL) {\r | |
457 | FreePool (IkeSaSession->NCookie);\r | |
458 | }\r | |
459 | \r | |
460 | if (IkeSaSession->InitPacket != NULL) {\r | |
461 | FreePool (IkeSaSession->InitPacket);\r | |
462 | }\r | |
463 | \r | |
464 | if (IkeSaSession->RespPacket != NULL) {\r | |
465 | FreePool (IkeSaSession->RespPacket);\r | |
466 | }\r | |
467 | \r | |
468 | FreePool (IkeSaSession);\r | |
469 | \r | |
470 | return ;\r | |
471 | }\r | |
472 | \r | |
473 | /**\r | |
474 | Increase the MessageID in IkeSaSession.\r | |
475 | \r | |
476 | @param[in] IkeSaSession Pointer to a specified IKEV2_SA_SESSION.\r | |
477 | \r | |
478 | **/\r | |
479 | VOID\r | |
480 | Ikev2SaSessionIncreaseMessageId (\r | |
481 | IN IKEV2_SA_SESSION *IkeSaSession\r | |
482 | )\r | |
483 | {\r | |
484 | if (IkeSaSession->MessageId < 0xffffffff) {\r | |
485 | IkeSaSession->MessageId ++;\r | |
486 | } else {\r | |
487 | //\r | |
488 | // TODO: Trigger Rekey process.\r | |
489 | //\r | |
490 | }\r | |
491 | }\r | |
492 | \r | |
493 | /**\r | |
494 | Allocate memory for IKEV2 Child SA Session.\r | |
495 | \r | |
496 | @param[in] UdpService Pointer to IKE_UDP_SERVICE.\r | |
497 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION related to this Child SA \r | |
498 | Session.\r | |
499 | \r | |
500 | @retval Pointer of a new created IKEV2 Child SA Session or NULL.\r | |
501 | \r | |
502 | **/\r | |
503 | IKEV2_CHILD_SA_SESSION *\r | |
504 | Ikev2ChildSaSessionAlloc (\r | |
505 | IN IKE_UDP_SERVICE *UdpService,\r | |
506 | IN IKEV2_SA_SESSION *IkeSaSession\r | |
507 | )\r | |
508 | {\r | |
509 | EFI_STATUS Status;\r | |
510 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
511 | IKEV2_SESSION_COMMON *ChildSaCommon;\r | |
512 | IKEV2_SESSION_COMMON *SaCommon;\r | |
513 | \r | |
514 | ChildSaSession = AllocateZeroPool (sizeof (IKEV2_CHILD_SA_SESSION));\r | |
515 | if (ChildSaSession == NULL) {\r | |
516 | return NULL;\r | |
517 | }\r | |
518 | \r | |
519 | //\r | |
520 | // Initialize the fields of ChildSaSession and its SessionCommon.\r | |
521 | //\r | |
522 | ChildSaSession->Signature = IKEV2_CHILD_SA_SESSION_SIGNATURE;\r | |
523 | ChildSaSession->IkeSaSession = IkeSaSession;\r | |
524 | ChildSaSession->MessageId = IkeSaSession->MessageId;\r | |
525 | ChildSaSession->LocalPeerSpi = IkeGenerateSpi ();\r | |
526 | ChildSaCommon = &ChildSaSession->SessionCommon;\r | |
527 | ChildSaCommon->UdpService = UdpService;\r | |
528 | ChildSaCommon->Private = IkeSaSession->SessionCommon.Private;\r | |
529 | ChildSaCommon->IkeSessionType = IkeSessionTypeChildSa;\r | |
530 | ChildSaCommon->IkeVer = 2;\r | |
531 | ChildSaCommon->AfterEncodePayload = Ikev2ChildSaAfterEncodePayload;\r | |
532 | ChildSaCommon->BeforeDecodePayload = Ikev2ChildSaBeforeDecodePayload;\r | |
533 | SaCommon = &ChildSaSession->IkeSaSession->SessionCommon;\r | |
534 | \r | |
535 | //\r | |
536 | // Create a resend notfiy event for retry.\r | |
537 | //\r | |
538 | Status = gBS->CreateEvent (\r | |
539 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
540 | TPL_CALLBACK,\r | |
541 | Ikev2ResendNotify,\r | |
542 | ChildSaCommon,\r | |
543 | &ChildSaCommon->TimeoutEvent\r | |
544 | );\r | |
545 | if (EFI_ERROR (Status)) {\r | |
546 | FreePool (ChildSaSession);\r | |
547 | return NULL;\r | |
548 | }\r | |
549 | \r | |
550 | CopyMem (&ChildSaCommon->LocalPeerIp, &SaCommon->LocalPeerIp, sizeof (EFI_IP_ADDRESS));\r | |
551 | CopyMem (&ChildSaCommon->RemotePeerIp, &SaCommon->RemotePeerIp, sizeof (EFI_IP_ADDRESS));\r | |
552 | \r | |
553 | return ChildSaSession;\r | |
554 | }\r | |
555 | \r | |
556 | /**\r | |
557 | Register a established IKEv2 Child SA into IkeSaSession->ChildSaEstablishSessionList. \r | |
558 | If the there is IKEV2_CHILD_SA_SESSION with same remote peer IP, remove the old one \r | |
559 | then register the new one.\r | |
560 | \r | |
561 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION to be registered.\r | |
562 | @param[in] Private Pointer to IPSEC_PRAVATE_DATA.\r | |
563 | \r | |
564 | **/\r | |
565 | VOID\r | |
566 | Ikev2ChildSaSessionReg (\r | |
567 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession,\r | |
568 | IN IPSEC_PRIVATE_DATA *Private\r | |
569 | )\r | |
570 | {\r | |
571 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
572 | IKEV2_CHILD_SA_SESSION *OldChildSaSession;\r | |
573 | IKEV2_SA_SESSION *IkeSaSession;\r | |
574 | IKEV2_SA_PARAMS *SaParams;\r | |
575 | EFI_STATUS Status;\r | |
576 | UINT64 Lifetime;\r | |
577 | \r | |
578 | //\r | |
579 | // Keep the IKE SA exclusive.\r | |
580 | //\r | |
581 | SessionCommon = &ChildSaSession->SessionCommon;\r | |
582 | IkeSaSession = ChildSaSession->IkeSaSession;\r | |
583 | OldChildSaSession = Ikev2ChildSaSessionRemove (\r | |
584 | &IkeSaSession->ChildSaEstablishSessionList,\r | |
585 | ChildSaSession->LocalPeerSpi,\r | |
586 | IKEV2_ESTABLISHED_CHILDSA_LIST\r | |
587 | );\r | |
588 | if (OldChildSaSession != NULL) {\r | |
589 | //\r | |
590 | // Free the old one.\r | |
591 | //\r | |
592 | Ikev2ChildSaSessionFree (OldChildSaSession);\r | |
593 | }\r | |
594 | \r | |
595 | //\r | |
596 | // Store the ready child SA into SAD.\r | |
597 | //\r | |
598 | Ikev2StoreSaData (ChildSaSession);\r | |
599 | \r | |
600 | //\r | |
601 | // Cleanup the fields of SessionCommon for processing.\r | |
602 | // \r | |
603 | Ikev2SessionCommonRefresh (SessionCommon);\r | |
604 | \r | |
605 | //\r | |
606 | // Insert the ready child SA session into established list.\r | |
607 | //\r | |
608 | Ikev2ChildSaSessionInsert (&IkeSaSession->ChildSaEstablishSessionList, ChildSaSession);\r | |
609 | \r | |
610 | //\r | |
611 | // Create a Notify event for the IKE SA life time counting.\r | |
612 | //\r | |
613 | Status = gBS->CreateEvent (\r | |
614 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
615 | TPL_CALLBACK,\r | |
616 | Ikev2LifetimeNotify,\r | |
617 | SessionCommon,\r | |
618 | &SessionCommon->TimeoutEvent\r | |
619 | );\r | |
620 | if (EFI_ERROR(Status)){\r | |
621 | return ;\r | |
622 | }\r | |
623 | \r | |
624 | //\r | |
625 | // Start to count the lifetime of the IKE SA.\r | |
626 | //\r | |
627 | SaParams = SessionCommon->SaParams;\r | |
628 | if (ChildSaSession->Spd->Data->ProcessingPolicy->SaLifetime.HardLifetime != 0){\r | |
629 | Lifetime = ChildSaSession->Spd->Data->ProcessingPolicy->SaLifetime.HardLifetime;\r | |
630 | } else {\r | |
631 | Lifetime = CHILD_SA_DEFAULT_LIFETIME;\r | |
632 | }\r | |
633 | \r | |
634 | Status = gBS->SetTimer (\r | |
635 | SessionCommon->TimeoutEvent,\r | |
636 | TimerRelative,\r | |
637 | MultU64x32(Lifetime, 10000000) // ms->100ns\r | |
638 | );\r | |
639 | if (EFI_ERROR(Status)){\r | |
640 | return ;\r | |
641 | }\r | |
642 | \r | |
643 | DEBUG ((\r | |
644 | DEBUG_INFO,\r | |
645 | "\n------ChildSa established and start to count down %d seconds lifetime\n",\r | |
646 | Lifetime\r | |
647 | ));\r | |
648 | \r | |
649 | return ;\r | |
650 | }\r | |
651 | \r | |
652 | /**\r | |
653 | Find the ChildSaSession by it's MessagId.\r | |
654 | \r | |
655 | @param[in] SaSessionList Pointer to a ChildSaSession List.\r | |
656 | @param[in] Mid The messageId used to search ChildSaSession.\r | |
657 | \r | |
658 | @return Pointer to IKEV2_CHILD_SA_SESSION or NULL.\r | |
659 | \r | |
660 | **/\r | |
661 | IKEV2_CHILD_SA_SESSION *\r | |
662 | Ikev2ChildSaSessionLookupByMid (\r | |
663 | IN LIST_ENTRY *SaSessionList,\r | |
664 | IN UINT32 Mid\r | |
665 | )\r | |
666 | {\r | |
667 | LIST_ENTRY *Entry;\r | |
668 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
669 | ||
670 | NET_LIST_FOR_EACH (Entry, SaSessionList) {\r | |
671 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
672 | ||
673 | if (ChildSaSession->MessageId == Mid) {\r | |
674 | return ChildSaSession; | |
675 | } | |
676 | }\r | |
677 | return NULL;\r | |
678 | }\r | |
679 | \r | |
680 | /**\r | |
681 | This function find the Child SA by the specified SPI.\r | |
682 | ||
683 | This functin find a ChildSA session by searching the ChildSaSessionlist of | |
684 | the input IKEV2_SA_SESSION by specified MessageID.\r | |
685 | ||
686 | @param[in] SaSessionList Pointer to List to be searched.\r | |
687 | @param[in] Spi Specified SPI.\r | |
688 | ||
689 | @return Pointer to IKEV2_CHILD_SA_SESSION or NULL.\r | |
690 | \r | |
691 | **/\r | |
692 | IKEV2_CHILD_SA_SESSION *\r | |
693 | Ikev2ChildSaSessionLookupBySpi (\r | |
694 | IN LIST_ENTRY *SaSessionList,\r | |
695 | IN UINT32 Spi\r | |
696 | )\r | |
697 | {\r | |
698 | LIST_ENTRY *Entry;\r | |
699 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
700 | ||
701 | NET_LIST_FOR_EACH (Entry, SaSessionList) {\r | |
702 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
703 | ||
704 | if (ChildSaSession->RemotePeerSpi == Spi || ChildSaSession->LocalPeerSpi == Spi) {\r | |
705 | return ChildSaSession; | |
706 | } | |
707 | } | |
708 | \r | |
709 | return NULL;\r | |
710 | }\r | |
711 | \r | |
712 | /**\r | |
713 | Insert a Child SA Session into the specified ChildSa list.\r | |
714 | \r | |
715 | @param[in] SaSessionList Pointer to list to be inserted in.\r | |
716 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION to be inserted.\r | |
717 | \r | |
718 | **/\r | |
719 | VOID\r | |
720 | Ikev2ChildSaSessionInsert (\r | |
721 | IN LIST_ENTRY *SaSessionList,\r | |
722 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
723 | )\r | |
724 | {\r | |
725 | InsertTailList (SaSessionList, &ChildSaSession->ByIkeSa);\r | |
726 | }\r | |
727 | \r | |
728 | /**\r | |
729 | Remove the IKEV2_CHILD_SA_SESSION from IkeSaSessionList.\r | |
730 | \r | |
731 | @param[in] SaSessionList The SA Session List to be iterated.\r | |
732 | @param[in] Spi Spi used to identified the IKEV2_CHILD_SA_SESSION.\r | |
733 | @param[in] ListType The type of the List to indicate whether it is a \r | |
734 | Established. \r | |
735 | \r | |
736 | @return The point to IKEV2_CHILD_SA_SESSION or NULL.\r | |
737 | \r | |
738 | **/\r | |
739 | IKEV2_CHILD_SA_SESSION *\r | |
740 | Ikev2ChildSaSessionRemove (\r | |
741 | IN LIST_ENTRY *SaSessionList,\r | |
742 | IN UINT32 Spi, \r | |
743 | IN UINT8 ListType\r | |
744 | )\r | |
745 | {\r | |
746 | LIST_ENTRY *Entry;\r | |
747 | LIST_ENTRY *NextEntry;\r | |
748 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
749 | \r | |
750 | NET_LIST_FOR_EACH_SAFE (Entry, NextEntry, SaSessionList) {\r | |
751 | \r | |
752 | if (ListType == IKEV2_ESTABLISHED_CHILDSA_LIST || ListType == IKEV2_ESTABLISHING_CHILDSA_LIST) {\r | |
753 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (Entry);\r | |
754 | } else if (ListType == IKEV2_DELET_CHILDSA_LIST) {\r | |
755 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_DEL_SA (Entry);\r | |
756 | } else {\r | |
757 | return NULL;\r | |
758 | }\r | |
759 | \r | |
760 | if (ChildSaSession->RemotePeerSpi == Spi || ChildSaSession->LocalPeerSpi == Spi) {\r | |
761 | RemoveEntryList (Entry);\r | |
762 | return ChildSaSession;\r | |
763 | }\r | |
764 | }\r | |
765 | \r | |
766 | return NULL;\r | |
767 | }\r | |
768 | \r | |
769 | /**\r | |
770 | Mark a specified Child SA Session as on deleting.\r | |
771 | \r | |
772 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION.\r | |
773 | \r | |
774 | @retval EFI_SUCCESS Operation is successful.\r | |
775 | \r | |
776 | **/\r | |
777 | EFI_STATUS\r | |
778 | Ikev2ChildSaSessionOnDeleting (\r | |
779 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
780 | )\r | |
781 | {\r | |
782 | return EFI_SUCCESS;\r | |
783 | }\r | |
784 | \r | |
785 | /**\r | |
786 | Free the memory located for the specified IKEV2_CHILD_SA_SESSION. \r | |
787 | \r | |
788 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION.\r | |
789 | \r | |
790 | **/\r | |
791 | VOID\r | |
792 | Ikev2ChildSaSessionFree (\r | |
793 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
794 | )\r | |
795 | {\r | |
796 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
797 | \r | |
798 | SessionCommon = &ChildSaSession->SessionCommon;\r | |
799 | if (ChildSaSession->SaData != NULL) {\r | |
800 | FreePool (ChildSaSession->SaData);\r | |
801 | }\r | |
802 | \r | |
803 | if (ChildSaSession->NiBlock != NULL) {\r | |
804 | FreePool (ChildSaSession->NiBlock);\r | |
805 | }\r | |
806 | \r | |
807 | if (ChildSaSession->NrBlock != NULL) {\r | |
808 | FreePool (ChildSaSession->NrBlock);\r | |
809 | }\r | |
810 | \r | |
811 | if (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.AuthKey != NULL) {\r | |
812 | FreePool (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.AuthKey);\r | |
813 | }\r | |
814 | \r | |
815 | if (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.EncKey != NULL) {\r | |
816 | FreePool (ChildSaSession->ChildKeymats.LocalPeerInfo.EspAlgoInfo.EncKey);\r | |
817 | }\r | |
818 | \r | |
819 | if (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.AuthKey != NULL) {\r | |
820 | FreePool (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.AuthKey);\r | |
821 | }\r | |
822 | \r | |
823 | if (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.EncKey != NULL) {\r | |
824 | FreePool (ChildSaSession->ChildKeymats.RemotePeerInfo.EspAlgoInfo.EncKey);\r | |
825 | }\r | |
826 | \r | |
827 | //\r | |
828 | // Delete DhBuffer\r | |
829 | //\r | |
830 | Ikev2DhBufferFree (ChildSaSession->DhBuffer);\r | |
831 | \r | |
832 | //\r | |
833 | // Delete SpdSelector\r | |
834 | //\r | |
835 | if (ChildSaSession->SpdSelector != NULL) {\r | |
836 | if (ChildSaSession->SpdSelector->LocalAddress != NULL) {\r | |
837 | FreePool (ChildSaSession->SpdSelector->LocalAddress);\r | |
838 | }\r | |
839 | if (ChildSaSession->SpdSelector->RemoteAddress != NULL) {\r | |
840 | FreePool (ChildSaSession->SpdSelector->RemoteAddress);\r | |
841 | }\r | |
842 | FreePool (ChildSaSession->SpdSelector);\r | |
843 | }\r | |
844 | Ikev2SaSessionCommonFree (SessionCommon);\r | |
845 | FreePool (ChildSaSession);\r | |
846 | \r | |
847 | return ;\r | |
848 | }\r | |
849 | \r | |
850 | /**\r | |
851 | Delete the specified established Child SA.\r | |
852 | \r | |
853 | This function delete the Child SA directly and don't send the Information Packet to\r | |
854 | remote peer.\r | |
855 | \r | |
856 | @param[in] IkeSaSession Pointer to a IKE SA Session used to be searched for.\r | |
857 | @param[in] Spi SPI used to find the Child SA.\r | |
858 | \r | |
859 | @retval EFI_NOT_FOUND Pointer of IKE SA Session is NULL.\r | |
860 | @retval EFI_NOT_FOUND There is no specified Child SA related with the input\r | |
861 | SPI under this IKE SA Session.\r | |
862 | @retval EFI_SUCCESS Delete the Child SA successfully.\r | |
863 | \r | |
864 | **/\r | |
865 | EFI_STATUS\r | |
866 | Ikev2ChildSaSilentDelete (\r | |
867 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
868 | IN UINT32 Spi\r | |
869 | )\r | |
870 | {\r | |
871 | EFI_STATUS Status;\r | |
872 | EFI_IPSEC_CONFIG_SELECTOR *Selector;\r | |
873 | UINTN SelectorSize;\r | |
874 | BOOLEAN IsLocalFound;\r | |
875 | BOOLEAN IsRemoteFound;\r | |
876 | UINT32 LocalSpi;\r | |
877 | UINT32 RemoteSpi;\r | |
878 | IKEV2_CHILD_SA_SESSION *ChildSession;\r | |
879 | EFI_IPSEC_CONFIG_SELECTOR *LocalSelector;\r | |
880 | EFI_IPSEC_CONFIG_SELECTOR *RemoteSelector;\r | |
881 | IKE_UDP_SERVICE *UdpService;\r | |
882 | IPSEC_PRIVATE_DATA *Private;\r | |
883 | \r | |
884 | if (IkeSaSession == NULL) {\r | |
885 | return EFI_NOT_FOUND;\r | |
886 | }\r | |
887 | \r | |
888 | IsLocalFound = FALSE;\r | |
889 | IsRemoteFound = FALSE;\r | |
890 | ChildSession = NULL;\r | |
891 | LocalSelector = NULL;\r | |
892 | RemoteSelector = NULL;\r | |
893 | UdpService = IkeSaSession->SessionCommon.UdpService;\r | |
894 | \r | |
895 | Private = (UdpService->IpVersion == IP_VERSION_4) ?\r | |
896 | IPSEC_PRIVATE_DATA_FROM_UDP4LIST(UdpService->ListHead) :\r | |
897 | IPSEC_PRIVATE_DATA_FROM_UDP6LIST(UdpService->ListHead);\r | |
898 | \r | |
899 | //\r | |
900 | // Remove the Established SA from ChildSaEstablishlist.\r | |
901 | //\r | |
902 | ChildSession = Ikev2ChildSaSessionRemove(\r | |
903 | &(IkeSaSession->ChildSaEstablishSessionList),\r | |
904 | Spi, \r | |
905 | IKEV2_ESTABLISHED_CHILDSA_LIST\r | |
906 | );\r | |
907 | if (ChildSession == NULL) {\r | |
908 | return EFI_NOT_FOUND;\r | |
909 | }\r | |
910 | \r | |
911 | LocalSpi = ChildSession->LocalPeerSpi;\r | |
912 | RemoteSpi = ChildSession->RemotePeerSpi;\r | |
913 | \r | |
914 | SelectorSize = sizeof (EFI_IPSEC_CONFIG_SELECTOR);\r | |
915 | Selector = AllocateZeroPool (SelectorSize);\r | |
916 | ASSERT (Selector != NULL);\r | |
917 | \r | |
918 | \r | |
919 | \r | |
920 | while (1) {\r | |
921 | Status = EfiIpSecConfigGetNextSelector (\r | |
922 | &Private->IpSecConfig,\r | |
923 | IPsecConfigDataTypeSad,\r | |
924 | &SelectorSize,\r | |
925 | Selector\r | |
926 | );\r | |
927 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
928 | FreePool (Selector);\r | |
929 | \r | |
930 | Selector = AllocateZeroPool (SelectorSize);\r | |
931 | Status = EfiIpSecConfigGetNextSelector (\r | |
932 | &Private->IpSecConfig,\r | |
933 | IPsecConfigDataTypeSad,\r | |
934 | &SelectorSize,\r | |
935 | Selector\r | |
936 | );\r | |
937 | }\r | |
938 | \r | |
939 | if (EFI_ERROR (Status)) {\r | |
940 | break;\r | |
941 | }\r | |
942 | \r | |
943 | if (Selector->SaId.Spi == RemoteSpi) {\r | |
944 | //\r | |
945 | // SPI is unique. There is only one SAD whose SPI is\r | |
946 | // same with RemoteSpi.\r | |
947 | //\r | |
948 | IsRemoteFound = TRUE;\r | |
949 | RemoteSelector = AllocateZeroPool (SelectorSize);\r | |
02a758cb | 950 | ASSERT (RemoteSelector != NULL);\r |
9166f840 | 951 | CopyMem (RemoteSelector, Selector, SelectorSize);\r |
952 | }\r | |
953 | \r | |
954 | if (Selector->SaId.Spi == LocalSpi) {\r | |
955 | //\r | |
956 | // SPI is unique. There is only one SAD whose SPI is\r | |
957 | // same with LocalSpi.\r | |
958 | //\r | |
959 | IsLocalFound = TRUE;\r | |
960 | LocalSelector = AllocateZeroPool (SelectorSize);\r | |
02a758cb | 961 | ASSERT (LocalSelector != NULL);\r |
9166f840 | 962 | CopyMem (LocalSelector, Selector, SelectorSize);\r |
963 | }\r | |
964 | }\r | |
965 | //\r | |
966 | // Delete SA from the Variable.\r | |
967 | //\r | |
968 | if (IsLocalFound) {\r | |
969 | Status = EfiIpSecConfigSetData (\r | |
970 | &Private->IpSecConfig,\r | |
971 | IPsecConfigDataTypeSad,\r | |
972 | LocalSelector,\r | |
973 | NULL,\r | |
974 | NULL\r | |
975 | );\r | |
976 | }\r | |
977 | \r | |
978 | if (IsRemoteFound) {\r | |
979 | Status = EfiIpSecConfigSetData (\r | |
980 | &Private->IpSecConfig,\r | |
981 | IPsecConfigDataTypeSad,\r | |
982 | RemoteSelector,\r | |
983 | NULL,\r | |
984 | NULL\r | |
985 | );\r | |
986 | \r | |
987 | }\r | |
988 | \r | |
989 | DEBUG (\r | |
990 | (DEBUG_INFO,\r | |
991 | "\n------IKEV2 deleted ChildSa(local spi, remote spi):(0x%x, 0x%x)------\n",\r | |
992 | LocalSpi,\r | |
993 | RemoteSpi)\r | |
994 | );\r | |
995 | Ikev2ChildSaSessionFree (ChildSession);\r | |
996 | \r | |
997 | if (RemoteSelector != NULL) {\r | |
998 | FreePool (RemoteSelector);\r | |
999 | }\r | |
1000 | \r | |
1001 | if (LocalSelector != NULL) {\r | |
1002 | FreePool (LocalSelector);\r | |
1003 | }\r | |
1004 | \r | |
1005 | if (Selector != NULL) {\r | |
1006 | FreePool (Selector);\r | |
1007 | }\r | |
1008 | \r | |
1009 | return Status;\r | |
1010 | }\r | |
1011 | \r | |
1012 | /**\r | |
1013 | Free the specified DhBuffer.\r | |
1014 | \r | |
1015 | @param[in] DhBuffer Pointer to IKEV2_DH_BUFFER to be freed.\r | |
1016 | \r | |
1017 | **/\r | |
1018 | VOID\r | |
1019 | Ikev2DhBufferFree (\r | |
1020 | IKEV2_DH_BUFFER *DhBuffer\r | |
1021 | ) \r | |
1022 | {\r | |
1023 | if (DhBuffer != NULL) {\r | |
1024 | if (DhBuffer->GxBuffer != NULL) {\r | |
1025 | FreePool (DhBuffer->GxBuffer);\r | |
1026 | }\r | |
1027 | if (DhBuffer->GyBuffer != NULL) {\r | |
1028 | FreePool (DhBuffer->GyBuffer);\r | |
1029 | }\r | |
1030 | if (DhBuffer->GxyBuffer != NULL) {\r | |
1031 | FreePool (DhBuffer->GxyBuffer);\r | |
1032 | }\r | |
1033 | if (DhBuffer->DhContext != NULL) {\r | |
1034 | IpSecCryptoIoFreeDh (&DhBuffer->DhContext);\r | |
1035 | }\r | |
1036 | FreePool (DhBuffer);\r | |
1037 | }\r | |
1038 | }\r | |
1039 | \r | |
1040 | /**\r | |
1041 | This function is to parse a request IKE packet and return its request type.\r | |
1042 | The request type is one of IKE CHILD SA creation, IKE SA rekeying and \r | |
1043 | IKE CHILD SA rekeying.\r | |
1044 | \r | |
1045 | @param[in] IkePacket IKE packet to be prased.\r | |
1046 | \r | |
1047 | return the type of the IKE packet.\r | |
1048 | \r | |
1049 | **/\r | |
1050 | IKEV2_CREATE_CHILD_REQUEST_TYPE\r | |
1051 | Ikev2ChildExchangeRequestType(\r | |
1052 | IN IKE_PACKET *IkePacket\r | |
1053 | )\r | |
1054 | {\r | |
1055 | BOOLEAN Flag;\r | |
1056 | LIST_ENTRY *Entry;\r | |
1057 | IKE_PAYLOAD *IkePayload;\r | |
1058 | \r | |
1059 | Flag = FALSE;\r | |
1060 | \r | |
1061 | NET_LIST_FOR_EACH (Entry, &(IkePacket)->PayloadList) {\r | |
1062 | IkePayload = IKE_PAYLOAD_BY_PACKET (Entry);\r | |
1063 | if (IkePayload->PayloadType == IKEV2_PAYLOAD_TYPE_TS_INIT) {\r | |
1064 | //\r | |
1065 | // Packet with Ts Payload means it is for either CHILD_SA_CREATE or CHILD_SA_REKEY.\r | |
1066 | //\r | |
1067 | Flag = TRUE;\r | |
1068 | }\r | |
1069 | if (IkePayload->PayloadType == IKEV2_PAYLOAD_TYPE_NOTIFY) { \r | |
1070 | if (((IKEV2_NOTIFY*)IkePayload)->MessageType == IKEV2_NOTIFICATION_REKEY_SA) {\r | |
1071 | //\r | |
1072 | // If notify payload with REKEY_SA message type, the IkePacket is for \r | |
1073 | // rekeying Child SA.\r | |
1074 | //\r | |
1075 | return IkeRequestTypeRekeyChildSa;\r | |
1076 | }\r | |
1077 | }\r | |
1078 | };\r | |
1079 | \r | |
1080 | if (!Flag){\r | |
1081 | //\r | |
1082 | // The Create Child Exchange is for IKE SA rekeying.\r | |
1083 | //\r | |
1084 | return IkeRequestTypeRekeyIkeSa;\r | |
1085 | } else {\r | |
1086 | //\r | |
1087 | // If the Notify payloaad with transport mode message type, the IkePacket is \r | |
1088 | // for create Child SA.\r | |
1089 | //\r | |
1090 | return IkeRequestTypeCreateChildSa;\r | |
1091 | }\r | |
1092 | }\r | |
1093 | \r | |
1094 | /**\r | |
1095 | Associate a SPD selector to the Child SA Session.\r | |
1096 | \r | |
1097 | This function is called when the Child SA is not the first child SA of its \r | |
1098 | IKE SA. It associate a SPD to this Child SA.\r | |
1099 | \r | |
1100 | @param[in, out] ChildSaSession Pointer to the Child SA Session to be associated to \r | |
1101 | a SPD selector.\r | |
1102 | \r | |
1103 | @retval EFI_SUCCESS Associate one SPD selector to this Child SA Session successfully.\r | |
1104 | @retval EFI_NOT_FOUND Can't find the related SPD selector.\r | |
1105 | \r | |
1106 | **/\r | |
1107 | EFI_STATUS\r | |
1108 | Ikev2ChildSaAssociateSpdEntry (\r | |
1109 | IN OUT IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
1110 | )\r | |
1111 | {\r | |
1112 | IpSecVisitConfigData (IPsecConfigDataTypeSpd, Ikev2MatchSpdEntry, ChildSaSession);\r | |
1113 | if (ChildSaSession->Spd != NULL) {\r | |
1114 | return EFI_SUCCESS;\r | |
1115 | } else {\r | |
1116 | return EFI_NOT_FOUND;\r | |
1117 | }\r | |
1118 | }\r | |
1119 | \r | |
1120 | \r | |
1121 | /**\r | |
1122 | This function finds the SPI from Create Child SA Exchange Packet.\r | |
1123 | \r | |
1124 | @param[in] IkePacket Pointer to IKE_PACKET to be searched.\r | |
1125 | \r | |
1126 | @retval SPI number or 0 if it is not supported.\r | |
1127 | \r | |
1128 | **/\r | |
1129 | UINT32\r | |
1130 | Ikev2ChildExchangeRekeySpi (\r | |
1131 | IN IKE_PACKET *IkePacket\r | |
1132 | )\r | |
1133 | {\r | |
1134 | //\r | |
1135 | // Not support yet.\r | |
1136 | // \r | |
1137 | return 0;\r | |
1138 | }\r | |
1139 | \r | |
1140 | /**\r | |
1141 | Validate the IKE header of received IKE packet.\r | |
1142 | \r | |
1143 | @param[in] IkeSaSession Pointer to IKEV2_SA_SESSION related to this IKE packet.\r | |
1144 | @param[in] IkeHdr Pointer to IKE header of received IKE packet.\r | |
1145 | \r | |
1146 | @retval TRUE If the IKE header is valid.\r | |
1147 | @retval FALSE If the IKE header is invalid.\r | |
1148 | \r | |
1149 | **/\r | |
1150 | BOOLEAN\r | |
1151 | Ikev2ValidateHeader (\r | |
1152 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
1153 | IN IKE_HEADER *IkeHdr\r | |
1154 | )\r | |
1155 | {\r | |
1156 | \r | |
1157 | IKEV2_SESSION_STATE State;\r | |
1158 | \r | |
1159 | State = IkeSaSession->SessionCommon.State;\r | |
1160 | if (State == IkeStateInit) {\r | |
1161 | //\r | |
1162 | // For the IKE Initial Exchange, the MessagId should be zero.\r | |
1163 | //\r | |
1164 | if (IkeHdr->MessageId != 0) {\r | |
1165 | return FALSE;\r | |
1166 | }\r | |
1167 | } else {\r | |
1168 | if (State == IkeStateAuth) {\r | |
1169 | if (IkeHdr->MessageId != 1) {\r | |
1170 | return FALSE;\r | |
1171 | }\r | |
1172 | }\r | |
1173 | if (IkeHdr->InitiatorCookie != IkeSaSession->InitiatorCookie ||\r | |
1174 | IkeHdr->ResponderCookie != IkeSaSession->ResponderCookie\r | |
1175 | ) {\r | |
1176 | //\r | |
1177 | // TODO: send notification INVALID-COOKIE\r | |
1178 | //\r | |
1179 | return FALSE;\r | |
1180 | }\r | |
1181 | }\r | |
1182 | \r | |
1183 | //\r | |
1184 | // Information Exchagne and Create Child Exchange can be started from each part.\r | |
1185 | //\r | |
1186 | if (IkeHdr->ExchangeType != IKEV2_EXCHANGE_TYPE_INFO && \r | |
1187 | IkeHdr->ExchangeType != IKEV2_EXCHANGE_TYPE_CREATE_CHILD\r | |
1188 | ) {\r | |
1189 | if (IkeSaSession->SessionCommon.IsInitiator) {\r | |
1190 | if (IkeHdr->InitiatorCookie != IkeSaSession->InitiatorCookie) {\r | |
1191 | //\r | |
1192 | // TODO: send notification INVALID-COOKIE\r | |
1193 | //\r | |
1194 | return FALSE;\r | |
1195 | }\r | |
1196 | if (IkeHdr->Flags != IKE_HEADER_FLAGS_RESPOND) {\r | |
1197 | return FALSE;\r | |
1198 | }\r | |
1199 | } else {\r | |
1200 | if (IkeHdr->Flags != IKE_HEADER_FLAGS_INIT) {\r | |
1201 | return FALSE;\r | |
1202 | }\r | |
1203 | }\r | |
1204 | }\r | |
1205 | \r | |
1206 | return TRUE;\r | |
1207 | }\r | |
1208 | \r | |
1209 | /**\r | |
1210 | Create and intialize IKEV2_SA_DATA for speicifed IKEV2_SESSION_COMMON.\r | |
1211 | \r | |
1212 | This function will be only called by the initiator. The responder's IKEV2_SA_DATA\r | |
1213 | will be generated during parsed the initiator packet.\r | |
1214 | \r | |
1215 | @param[in] SessionCommon Pointer to IKEV2_SESSION_COMMON related to.\r | |
1216 | \r | |
1217 | @retval a Pointer to a new IKEV2_SA_DATA or NULL.\r | |
1218 | \r | |
1219 | **/\r | |
1220 | IKEV2_SA_DATA *\r | |
1221 | Ikev2InitializeSaData (\r | |
1222 | IN IKEV2_SESSION_COMMON *SessionCommon\r | |
1223 | )\r | |
1224 | {\r | |
1225 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1226 | IKEV2_SA_DATA *SaData;\r | |
1227 | IKEV2_PROPOSAL_DATA *ProposalData;\r | |
1228 | IKEV2_TRANSFORM_DATA *TransformData;\r | |
1229 | IKE_SA_ATTRIBUTE *Attribute;\r | |
1230 | \r | |
1231 | ASSERT (SessionCommon != NULL);\r | |
1232 | //\r | |
1233 | // TODO: Remove the hard code of the support Alogrithm. Those data should be\r | |
1234 | // get from the SPD/PAD data.\r | |
1235 | //\r | |
1236 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1237 | SaData = AllocateZeroPool (\r | |
1238 | sizeof (IKEV2_SA_DATA) +\r | |
1239 | sizeof (IKEV2_PROPOSAL_DATA) * 2 +\r | |
1240 | sizeof (IKEV2_TRANSFORM_DATA) * 4 * 2\r | |
1241 | );\r | |
1242 | } else {\r | |
1243 | SaData = AllocateZeroPool (\r | |
1244 | sizeof (IKEV2_SA_DATA) +\r | |
1245 | sizeof (IKEV2_PROPOSAL_DATA) * 2 +\r | |
1246 | sizeof (IKEV2_TRANSFORM_DATA) * 3 * 2\r | |
1247 | );\r | |
1248 | }\r | |
1249 | if (SaData == NULL) {\r | |
1250 | return NULL;\r | |
1251 | }\r | |
1252 | \r | |
1253 | //\r | |
1254 | // First proposal payload: 3DES + SHA1 + DH\r | |
1255 | //\r | |
1256 | SaData->NumProposals = 2;\r | |
1257 | ProposalData = (IKEV2_PROPOSAL_DATA *) (SaData + 1);\r | |
1258 | ProposalData->ProposalIndex = 1;\r | |
1259 | \r | |
1260 | //\r | |
1261 | // If SA data for IKE_SA_INIT exchage, contains 4 transforms. If SA data for \r | |
1262 | // IKE_AUTH exchange contains 3 transforms.\r | |
1263 | //\r | |
1264 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1265 | ProposalData->NumTransforms = 4;\r | |
1266 | } else {\r | |
1267 | ProposalData->NumTransforms = 3;\r | |
1268 | }\r | |
1269 | \r | |
1270 | \r | |
1271 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1272 | ProposalData->ProtocolId = IPSEC_PROTO_ISAKMP;\r | |
1273 | } else {\r | |
1274 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1275 | ProposalData->ProtocolId = IPSEC_PROTO_IPSEC_ESP;\r | |
1276 | ProposalData->Spi = AllocateZeroPool (sizeof (ChildSaSession->LocalPeerSpi));\r | |
1277 | ASSERT (ProposalData->Spi != NULL);\r | |
1278 | CopyMem (\r | |
1279 | ProposalData->Spi,\r | |
1280 | &ChildSaSession->LocalPeerSpi,\r | |
1281 | sizeof(ChildSaSession->LocalPeerSpi)\r | |
1282 | );\r | |
1283 | }\r | |
1284 | \r | |
1285 | //\r | |
1286 | // Set transform attribute for Encryption Algorithm - 3DES\r | |
1287 | //\r | |
1288 | TransformData = (IKEV2_TRANSFORM_DATA *) (ProposalData + 1);\r | |
1289 | TransformData->TransformIndex = 0;\r | |
1290 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_ENCR;\r | |
1291 | TransformData->TransformId = IKEV2_TRANSFORM_ID_ENCR_3DES;\r | |
1292 | \r | |
1293 | //\r | |
1294 | // Set transform attribute for Integrity Algorithm - SHA1_96\r | |
1295 | //\r | |
1296 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1297 | TransformData->TransformIndex = 1;\r | |
1298 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_INTEG;\r | |
1299 | TransformData->TransformId = IKEV2_TRANSFORM_ID_AUTH_HMAC_SHA1_96;\r | |
1300 | \r | |
1301 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1302 | //\r | |
1303 | // Set transform attribute for Pseduo-Random Function - HAMC_SHA1\r | |
1304 | //\r | |
1305 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1306 | TransformData->TransformIndex = 2;\r | |
1307 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_PRF;\r | |
1308 | TransformData->TransformId = IKEV2_TRANSFORM_ID_PRF_HMAC_SHA1;\r | |
1309 | }\r | |
1310 | \r | |
1311 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1312 | //\r | |
1313 | // Set transform attribute for DH Group - DH 1024\r | |
1314 | //\r | |
1315 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1316 | TransformData->TransformIndex = 3;\r | |
1317 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_DH;\r | |
1318 | TransformData->TransformId = IKEV2_TRANSFORM_ID_DH_1024MODP;\r | |
1319 | } else {\r | |
1320 | //\r | |
1321 | // Transform type for Extended Sequence Numbers. Currently not support Extended\r | |
1322 | // Sequence Number.\r | |
1323 | //\r | |
1324 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1325 | TransformData->TransformIndex = 2;\r | |
1326 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_ESN;\r | |
1327 | TransformData->TransformId = 0;\r | |
1328 | }\r | |
1329 | \r | |
1330 | //\r | |
1331 | // Second proposal payload: 3DES + SHA1 + DH\r | |
1332 | //\r | |
1333 | ProposalData = (IKEV2_PROPOSAL_DATA *) (TransformData + 1);\r | |
1334 | ProposalData->ProposalIndex = 2;\r | |
1335 | \r | |
1336 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1337 | ProposalData->ProtocolId = IPSEC_PROTO_ISAKMP;\r | |
1338 | ProposalData->NumTransforms = 4;\r | |
1339 | } else {\r | |
1340 | \r | |
1341 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1342 | ProposalData->ProtocolId = IPSEC_PROTO_IPSEC_ESP;\r | |
1343 | ProposalData->NumTransforms = 3;\r | |
1344 | ProposalData->Spi = AllocateZeroPool (sizeof (ChildSaSession->LocalPeerSpi));\r | |
1345 | ASSERT (ProposalData->Spi != NULL);\r | |
1346 | CopyMem (\r | |
1347 | ProposalData->Spi,\r | |
1348 | &ChildSaSession->LocalPeerSpi,\r | |
1349 | sizeof(ChildSaSession->LocalPeerSpi)\r | |
1350 | );\r | |
1351 | }\r | |
1352 | \r | |
1353 | //\r | |
1354 | // Set transform attribute for Encryption Algorithm - AES-CBC\r | |
1355 | //\r | |
1356 | TransformData = (IKEV2_TRANSFORM_DATA *) (ProposalData + 1);\r | |
1357 | TransformData->TransformIndex = 0;\r | |
1358 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_ENCR;\r | |
1359 | TransformData->TransformId = IKEV2_TRANSFORM_ID_ENCR_AES_CBC;\r | |
1360 | Attribute = &TransformData->Attribute;\r | |
1361 | Attribute->AttrType = IKEV2_ATTRIBUTE_TYPE_KEYLEN;\r | |
1362 | Attribute->Attr.AttrLength = (UINT16) (8 * IpSecGetEncryptKeyLength (IKEV2_TRANSFORM_ID_ENCR_AES_CBC));\r | |
1363 | \r | |
1364 | //\r | |
1365 | // Set transform attribute for Integrity Algorithm - SHA1_96\r | |
1366 | //\r | |
1367 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1368 | TransformData->TransformIndex = 1;\r | |
1369 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_INTEG;\r | |
1370 | TransformData->TransformId = IKEV2_TRANSFORM_ID_AUTH_HMAC_SHA1_96;\r | |
1371 | \r | |
1372 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1373 | //\r | |
1374 | // Set transform attribute for Pseduo-Random Function - HAMC_SHA1\r | |
1375 | //\r | |
1376 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1377 | TransformData->TransformIndex = 2;\r | |
1378 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_PRF;\r | |
1379 | TransformData->TransformId = IKEV2_TRANSFORM_ID_PRF_HMAC_SHA1;\r | |
1380 | }\r | |
1381 | \r | |
1382 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1383 | //\r | |
1384 | // Set transform attrbiute for DH Group - DH-1024\r | |
1385 | //\r | |
1386 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1387 | TransformData->TransformIndex = 3;\r | |
1388 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_DH;\r | |
1389 | TransformData->TransformId = IKEV2_TRANSFORM_ID_DH_1024MODP;\r | |
1390 | } else {\r | |
1391 | //\r | |
1392 | // Transform type for Extended Sequence Numbers. Currently not support Extended\r | |
1393 | // Sequence Number.\r | |
1394 | //\r | |
1395 | TransformData = (IKEV2_TRANSFORM_DATA *) (TransformData + 1);\r | |
1396 | TransformData->TransformIndex = 2;\r | |
1397 | TransformData->TransformType = IKEV2_TRANSFORM_TYPE_ESN;\r | |
1398 | TransformData->TransformId = 0;\r | |
1399 | }\r | |
1400 | \r | |
1401 | return SaData;\r | |
1402 | }\r | |
1403 | \r | |
1404 | /**\r | |
1405 | Store the SA into SAD.\r | |
1406 | \r | |
1407 | @param[in] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION.\r | |
1408 | \r | |
1409 | **/\r | |
1410 | VOID\r | |
1411 | Ikev2StoreSaData (\r | |
1412 | IN IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
1413 | )\r | |
1414 | {\r | |
1415 | EFI_STATUS Status;\r | |
1416 | EFI_IPSEC_SA_ID SaId;\r | |
1417 | EFI_IPSEC_SA_DATA2 SaData;\r | |
1418 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
1419 | IPSEC_PRIVATE_DATA *Private;\r | |
1420 | UINT32 TempAddressCount;\r | |
1421 | EFI_IP_ADDRESS_INFO *TempAddressInfo;\r | |
1422 | \r | |
1423 | SessionCommon = &ChildSaSession->SessionCommon;\r | |
1424 | Private = SessionCommon->Private;\r | |
1425 | \r | |
1426 | ZeroMem (&SaId, sizeof (EFI_IPSEC_SA_ID));\r | |
1427 | ZeroMem (&SaData, sizeof (EFI_IPSEC_SA_DATA2));\r | |
1428 | \r | |
1429 | //\r | |
1430 | // Create a SpdSelector. In this implementation, one SPD represents\r | |
1431 | // 2 direction traffic, so in here, there needs to reverse the local address \r | |
1432 | // and remote address for Remote Peer's SA, then reverse again for the locate\r | |
1433 | // SA. \r | |
1434 | //\r | |
1435 | TempAddressCount = ChildSaSession->SpdSelector->LocalAddressCount;\r | |
1436 | TempAddressInfo = ChildSaSession->SpdSelector->LocalAddress;\r | |
1437 | \r | |
1438 | ChildSaSession->SpdSelector->LocalAddressCount = ChildSaSession->SpdSelector->RemoteAddressCount;\r | |
1439 | ChildSaSession->SpdSelector->LocalAddress = ChildSaSession->SpdSelector->RemoteAddress;\r | |
1440 | \r | |
1441 | ChildSaSession->SpdSelector->RemoteAddress = TempAddressInfo;\r | |
1442 | ChildSaSession->SpdSelector->RemoteAddressCount= TempAddressCount;\r | |
1443 | \r | |
1444 | //\r | |
1445 | // Set the SaId and SaData.\r | |
1446 | //\r | |
1447 | SaId.Spi = ChildSaSession->LocalPeerSpi;\r | |
1448 | SaId.Proto = EfiIPsecESP;\r | |
1449 | SaData.AntiReplayWindows = 16;\r | |
1450 | SaData.SNCount = 0;\r | |
1451 | SaData.Mode = ChildSaSession->Spd->Data->ProcessingPolicy->Mode;\r | |
1452 | \r | |
1453 | //\r | |
1454 | // If it is tunnel mode, should add the TunnelDest and TunnelSource for SaData.\r | |
1455 | //\r | |
1456 | if (SaData.Mode == EfiIPsecTunnel) {\r | |
1457 | CopyMem (\r | |
1458 | &SaData.TunnelSourceAddress, \r | |
1459 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->RemoteTunnelAddress,\r | |
1460 | sizeof (EFI_IP_ADDRESS)\r | |
1461 | );\r | |
1462 | CopyMem (\r | |
1463 | &SaData.TunnelDestinationAddress,\r | |
1464 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->LocalTunnelAddress,\r | |
1465 | sizeof (EFI_IP_ADDRESS)\r | |
1466 | );\r | |
1467 | }\r | |
1468 | \r | |
1469 | CopyMem (&SaId.DestAddress, &ChildSaSession->SessionCommon.LocalPeerIp, sizeof (EFI_IP_ADDRESS));\r | |
1470 | CopyMem (&SaData.AlgoInfo, &ChildSaSession->ChildKeymats.LocalPeerInfo, sizeof (EFI_IPSEC_ALGO_INFO));\r | |
1471 | SaData.SpdSelector = ChildSaSession->SpdSelector;\r | |
1472 | \r | |
1473 | //\r | |
1474 | // Store the remote SA into SAD.\r | |
1475 | //\r | |
1476 | Status = EfiIpSecConfigSetData (\r | |
1477 | &Private->IpSecConfig,\r | |
1478 | IPsecConfigDataTypeSad,\r | |
1479 | (EFI_IPSEC_CONFIG_SELECTOR *) &SaId,\r | |
1480 | &SaData,\r | |
1481 | NULL\r | |
1482 | );\r | |
1483 | ASSERT_EFI_ERROR (Status);\r | |
1484 | \r | |
1485 | //\r | |
1486 | // Store the local SA into SAD.\r | |
1487 | // \r | |
1488 | ChildSaSession->SpdSelector->RemoteAddressCount = ChildSaSession->SpdSelector->LocalAddressCount;\r | |
1489 | ChildSaSession->SpdSelector->RemoteAddress = ChildSaSession->SpdSelector->LocalAddress;\r | |
1490 | \r | |
1491 | ChildSaSession->SpdSelector->LocalAddress = TempAddressInfo;\r | |
1492 | ChildSaSession->SpdSelector->LocalAddressCount = TempAddressCount;\r | |
1493 | \r | |
1494 | SaId.Spi = ChildSaSession->RemotePeerSpi;\r | |
1495 | \r | |
1496 | CopyMem (&SaId.DestAddress, &ChildSaSession->SessionCommon.RemotePeerIp, sizeof (EFI_IP_ADDRESS));\r | |
1497 | CopyMem (&SaData.AlgoInfo, &ChildSaSession->ChildKeymats.RemotePeerInfo, sizeof (EFI_IPSEC_ALGO_INFO));\r | |
1498 | SaData.SpdSelector = ChildSaSession->SpdSelector;\r | |
1499 | \r | |
1500 | //\r | |
1501 | // If it is tunnel mode, should add the TunnelDest and TunnelSource for SaData.\r | |
1502 | //\r | |
1503 | if (SaData.Mode == EfiIPsecTunnel) {\r | |
1504 | CopyMem (\r | |
1505 | &SaData.TunnelSourceAddress,\r | |
1506 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->LocalTunnelAddress,\r | |
1507 | sizeof (EFI_IP_ADDRESS)\r | |
1508 | );\r | |
1509 | CopyMem (\r | |
1510 | &SaData.TunnelDestinationAddress,\r | |
1511 | &ChildSaSession->Spd->Data->ProcessingPolicy->TunnelOption->RemoteTunnelAddress,\r | |
1512 | sizeof (EFI_IP_ADDRESS)\r | |
1513 | );\r | |
1514 | }\r | |
1515 | \r | |
1516 | Status = EfiIpSecConfigSetData (\r | |
1517 | &Private->IpSecConfig,\r | |
1518 | IPsecConfigDataTypeSad,\r | |
1519 | (EFI_IPSEC_CONFIG_SELECTOR *) &SaId,\r | |
1520 | &SaData,\r | |
1521 | NULL\r | |
1522 | );\r | |
1523 | \r | |
1524 | ASSERT_EFI_ERROR (Status);\r | |
1525 | }\r | |
1526 | \r | |
1527 | /**\r | |
1528 | Call back function of the IKE life time is over.\r | |
1529 | \r | |
1530 | This function will mark the related IKE SA Session as deleting and trigger a \r | |
1531 | Information negotiation.\r | |
1532 | \r | |
1533 | @param[in] Event The signaled Event.\r | |
1534 | @param[in] Context Pointer to data passed by caller.\r | |
1535 | \r | |
1536 | **/\r | |
1537 | VOID\r | |
1538 | EFIAPI\r | |
1539 | Ikev2LifetimeNotify (\r | |
1540 | IN EFI_EVENT Event,\r | |
1541 | IN VOID *Context\r | |
1542 | )\r | |
1543 | {\r | |
1544 | IKEV2_SA_SESSION *IkeSaSession;\r | |
1545 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1546 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
1547 | \r | |
1548 | ASSERT (Context != NULL);\r | |
1549 | SessionCommon = (IKEV2_SESSION_COMMON *) Context;\r | |
1550 | \r | |
1551 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1552 | IkeSaSession = IKEV2_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1553 | DEBUG ((\r | |
1554 | DEBUG_INFO,\r | |
1555 | "\n---IkeSa Lifetime is out(cookie_i, cookie_r):(0x%lx, 0x%lx)---\n",\r | |
1556 | IkeSaSession->InitiatorCookie,\r | |
1557 | IkeSaSession->ResponderCookie\r | |
1558 | ));\r | |
1559 | \r | |
1560 | //\r | |
1561 | // Change the IKE SA Session's State to IKE_STATE_SA_DELETING.\r | |
1562 | //\r | |
1563 | IKEV2_DUMP_STATE (IkeSaSession->SessionCommon.State, IkeStateSaDeleting);\r | |
1564 | IkeSaSession->SessionCommon.State = IkeStateSaDeleting;\r | |
1565 | \r | |
1566 | } else {\r | |
1567 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1568 | IkeSaSession = ChildSaSession->IkeSaSession;\r | |
1569 | \r | |
1570 | //\r | |
1571 | // Link the timeout child SA to the DeleteSaList.\r | |
1572 | //\r | |
1573 | InsertTailList (&IkeSaSession->DeleteSaList, &ChildSaSession->ByDelete);\r | |
1574 | \r | |
1575 | //\r | |
1576 | // Change the Child SA Session's State to IKE_STATE_SA_DELETING.\r | |
1577 | // \r | |
1578 | DEBUG ((\r | |
1579 | DEBUG_INFO,\r | |
1580 | "\n------ChildSa Lifetime is out(SPI):(0x%x)------\n",\r | |
1581 | ChildSaSession->LocalPeerSpi\r | |
1582 | ));\r | |
1583 | }\r | |
1584 | \r | |
1585 | //\r | |
1586 | // TODO: Send the delete info packet or delete silently\r | |
1587 | //\r | |
1588 | mIkev2Exchange.NegotiateInfo ((UINT8 *) IkeSaSession, NULL);\r | |
1589 | }\r | |
1590 | \r | |
1591 | /**\r | |
1592 | This function will be called if the TimeOut Event is signaled.\r | |
1593 | \r | |
1594 | @param[in] Event The signaled Event.\r | |
1595 | @param[in] Context The data passed by caller.\r | |
1596 | \r | |
1597 | **/\r | |
1598 | VOID\r | |
1599 | EFIAPI\r | |
1600 | Ikev2ResendNotify (\r | |
1601 | IN EFI_EVENT Event,\r | |
1602 | IN VOID *Context\r | |
1603 | )\r | |
1604 | {\r | |
1605 | IPSEC_PRIVATE_DATA *Private;\r | |
1606 | IKEV2_SA_SESSION *IkeSaSession;\r | |
1607 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1608 | IKEV2_SESSION_COMMON *SessionCommon;\r | |
1609 | LIST_ENTRY *ChildSaEntry;\r | |
1610 | UINT8 Value;\r | |
1611 | EFI_STATUS Status;\r | |
1612 | \r | |
1613 | ASSERT (Context != NULL); \r | |
1614 | IkeSaSession = NULL;\r | |
1615 | ChildSaSession = NULL;\r | |
1616 | SessionCommon = (IKEV2_SESSION_COMMON *) Context;\r | |
1617 | Private = SessionCommon->Private;\r | |
1618 | \r | |
1619 | //\r | |
1620 | // Remove the SA session from the processing list if exceed the max retry.\r | |
1621 | //\r | |
1622 | if (SessionCommon->RetryCount > IKE_MAX_RETRY) {\r | |
1623 | if (SessionCommon->IkeSessionType == IkeSessionTypeIkeSa) {\r | |
1624 | IkeSaSession = IKEV2_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1625 | if (IkeSaSession->SessionCommon.State == IkeStateSaDeleting) {\r | |
1626 | \r | |
1627 | //\r | |
1628 | // If the IkeSaSession is initiator, delete all its Child SAs before removing IKE SA.\r | |
1629 | // If the IkesaSession is responder, all ChildSa has been remove in Ikev2HandleInfo();\r | |
1630 | //\r | |
1631 | for (ChildSaEntry = IkeSaSession->ChildSaEstablishSessionList.ForwardLink;\r | |
1632 | ChildSaEntry != &IkeSaSession->ChildSaEstablishSessionList;\r | |
1633 | ) {\r | |
1634 | ChildSaSession = IKEV2_CHILD_SA_SESSION_BY_IKE_SA (ChildSaEntry);\r | |
1635 | //\r | |
1636 | // Move to next ChildSa Entry.\r | |
1637 | //\r | |
1638 | ChildSaEntry = ChildSaEntry->ForwardLink;\r | |
1639 | //\r | |
1640 | // Delete LocalSpi & RemoteSpi and remove the ChildSaSession from the\r | |
1641 | // EstablishedChildSaList.\r | |
1642 | //\r | |
1643 | Ikev2ChildSaSilentDelete (IkeSaSession, ChildSaSession->LocalPeerSpi);\r | |
1644 | }\r | |
1645 | \r | |
1646 | //\r | |
1647 | // If the IKE SA Delete Payload wasn't sent out successfully, Delete it from the EstablishedList.\r | |
1648 | //\r | |
1649 | Ikev2SaSessionRemove (&Private->Ikev2EstablishedList, &SessionCommon->RemotePeerIp);\r | |
1650 | \r | |
1651 | if (Private != NULL && Private->IsIPsecDisabling) {\r | |
1652 | //\r | |
1653 | // After all IKE SAs were deleted, set the IPSEC_STATUS_DISABLED value in\r | |
1654 | // IPsec status variable.\r | |
1655 | //\r | |
1656 | if (IsListEmpty (&Private->Ikev1EstablishedList) && IsListEmpty (&Private->Ikev2EstablishedList)) {\r | |
1657 | Value = IPSEC_STATUS_DISABLED;\r | |
1658 | Status = gRT->SetVariable (\r | |
1659 | IPSECCONFIG_STATUS_NAME,\r | |
1660 | &gEfiIpSecConfigProtocolGuid,\r | |
1661 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
1662 | sizeof (Value),\r | |
1663 | &Value\r | |
1664 | );\r | |
1665 | if (!EFI_ERROR (Status)) {\r | |
1666 | //\r | |
1667 | // Set the Disabled Flag in Private data.\r | |
1668 | //\r | |
1669 | Private->IpSec.DisabledFlag = TRUE;\r | |
1670 | Private->IsIPsecDisabling = FALSE;\r | |
1671 | }\r | |
1672 | }\r | |
1673 | }\r | |
1674 | } else {\r | |
1675 | Ikev2SaSessionRemove (&Private->Ikev2SessionList, &SessionCommon->RemotePeerIp);\r | |
1676 | }\r | |
1677 | Ikev2SaSessionFree (IkeSaSession);\r | |
1678 | \r | |
1679 | } else {\r | |
1680 | \r | |
1681 | //\r | |
1682 | // If the packet sent by Child SA.\r | |
1683 | //\r | |
1684 | ChildSaSession = IKEV2_CHILD_SA_SESSION_FROM_COMMON (SessionCommon);\r | |
1685 | IkeSaSession = ChildSaSession->IkeSaSession;\r | |
1686 | if (ChildSaSession->SessionCommon.State == IkeStateSaDeleting) {\r | |
1687 | \r | |
1688 | //\r | |
1689 | // Established Child SA should be remove from the SAD entry and \r | |
1690 | // DeleteList. The function of Ikev2DeleteChildSaSilent() will remove \r | |
1691 | // the childSA from the IkeSaSession->ChildSaEstablishedList. So there \r | |
1692 | // is no need to remove it here.\r | |
1693 | //\r | |
1694 | Ikev2ChildSaSilentDelete (IkeSaSession, ChildSaSession->LocalPeerSpi);\r | |
1695 | Ikev2ChildSaSessionRemove (\r | |
1696 | &IkeSaSession->DeleteSaList,\r | |
1697 | ChildSaSession->LocalPeerSpi,\r | |
1698 | IKEV2_DELET_CHILDSA_LIST\r | |
1699 | );\r | |
1700 | } else {\r | |
1701 | Ikev2ChildSaSessionRemove (\r | |
1702 | &IkeSaSession->ChildSaSessionList,\r | |
1703 | ChildSaSession->LocalPeerSpi,\r | |
1704 | IKEV2_ESTABLISHING_CHILDSA_LIST\r | |
1705 | );\r | |
1706 | }\r | |
1707 | \r | |
1708 | Ikev2ChildSaSessionFree (ChildSaSession);\r | |
1709 | }\r | |
1710 | return ;\r | |
1711 | }\r | |
1712 | \r | |
1713 | //\r | |
1714 | // Increase the retry count.\r | |
1715 | //\r | |
1716 | SessionCommon->RetryCount++;\r | |
1717 | DEBUG ((DEBUG_INFO, ">>>Resending the last packet ...\n"));\r | |
1718 | \r | |
1719 | //\r | |
1720 | // Resend the last packet.\r | |
1721 | //\r | |
1722 | Ikev2SendIkePacket (\r | |
1723 | SessionCommon->UdpService,\r | |
1724 | (UINT8*)SessionCommon,\r | |
1725 | SessionCommon->LastSentPacket,\r | |
1726 | 0\r | |
1727 | );\r | |
1728 | }\r | |
1729 | \r | |
1730 | /**\r | |
1731 | Copy ChildSaSession->Spd->Selector to ChildSaSession->SpdSelector.\r | |
1732 | \r | |
1733 | ChildSaSession->SpdSelector stores the real Spdselector for its SA. Sometime,\r | |
1734 | the SpdSelector in ChildSaSession is more accurated or the scope is smaller \r | |
1735 | than the one in ChildSaSession->Spd, especially for the tunnel mode.\r | |
1736 | \r | |
1737 | @param[in, out] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION related to.\r | |
1738 | \r | |
1739 | **/\r | |
1740 | VOID\r | |
1741 | Ikev2ChildSaSessionSpdSelectorCreate (\r | |
1742 | IN OUT IKEV2_CHILD_SA_SESSION *ChildSaSession\r | |
1743 | ) \r | |
1744 | {\r | |
1745 | if (ChildSaSession->Spd != NULL && ChildSaSession->Spd->Selector != NULL) {\r | |
1746 | if (ChildSaSession->SpdSelector == NULL) {\r | |
1747 | ChildSaSession->SpdSelector = AllocateZeroPool (sizeof (EFI_IPSEC_SPD_SELECTOR));\r | |
1748 | ASSERT (ChildSaSession->SpdSelector != NULL);\r | |
1749 | }\r | |
1750 | CopyMem (\r | |
1751 | ChildSaSession->SpdSelector, \r | |
1752 | ChildSaSession->Spd->Selector, \r | |
1753 | sizeof (EFI_IPSEC_SPD_SELECTOR)\r | |
1754 | );\r | |
1755 | ChildSaSession->SpdSelector->RemoteAddress = AllocateCopyPool (\r | |
1756 | ChildSaSession->Spd->Selector->RemoteAddressCount * \r | |
1757 | sizeof (EFI_IP_ADDRESS_INFO), \r | |
1758 | ChildSaSession->Spd->Selector->RemoteAddress\r | |
1759 | );\r | |
1760 | ChildSaSession->SpdSelector->LocalAddress = AllocateCopyPool (\r | |
1761 | ChildSaSession->Spd->Selector->LocalAddressCount * \r | |
1762 | sizeof (EFI_IP_ADDRESS_INFO), \r | |
1763 | ChildSaSession->Spd->Selector->LocalAddress\r | |
1764 | );\r | |
1765 | \r | |
1766 | ASSERT (ChildSaSession->SpdSelector->LocalAddress != NULL);\r | |
1767 | ASSERT (ChildSaSession->SpdSelector->RemoteAddress != NULL);\r | |
1768 | \r | |
1769 | ChildSaSession->SpdSelector->RemoteAddressCount = ChildSaSession->Spd->Selector->RemoteAddressCount;\r | |
1770 | ChildSaSession->SpdSelector->LocalAddressCount = ChildSaSession->Spd->Selector->LocalAddressCount; \r | |
1771 | }\r | |
1772 | }\r | |
1773 | \r | |
1774 | /**\r | |
1775 | Generate a ChildSa Session and insert it into related IkeSaSession.\r | |
1776 | \r | |
1777 | @param[in] IkeSaSession Pointer to related IKEV2_SA_SESSION.\r | |
1778 | @param[in] UdpService Pointer to related IKE_UDP_SERVICE.\r | |
1779 | \r | |
1780 | @return pointer of IKEV2_CHILD_SA_SESSION.\r | |
1781 | \r | |
1782 | **/\r | |
1783 | IKEV2_CHILD_SA_SESSION *\r | |
1784 | Ikev2ChildSaSessionCreate (\r | |
1785 | IN IKEV2_SA_SESSION *IkeSaSession,\r | |
1786 | IN IKE_UDP_SERVICE *UdpService\r | |
1787 | )\r | |
1788 | {\r | |
1789 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1790 | IKEV2_SESSION_COMMON *ChildSaCommon;\r | |
1791 | \r | |
1792 | //\r | |
1793 | // Create a new ChildSaSession.Insert it into processing list and initiate the common parameters.\r | |
1794 | //\r | |
1795 | ChildSaSession = Ikev2ChildSaSessionAlloc (UdpService, IkeSaSession);\r | |
1796 | ASSERT (ChildSaSession != NULL);\r | |
1797 | \r | |
1798 | //\r | |
1799 | // Set the specific parameters.\r | |
1800 | // \r | |
1801 | ChildSaSession->Spd = IkeSaSession->Spd;\r | |
1802 | ChildSaCommon = &ChildSaSession->SessionCommon;\r | |
1803 | ChildSaCommon->IsInitiator = IkeSaSession->SessionCommon.IsInitiator;\r | |
1804 | if (IkeSaSession->SessionCommon.State == IkeStateAuth) {\r | |
1805 | ChildSaCommon->State = IkeStateAuth;\r | |
1806 | IKEV2_DUMP_STATE (ChildSaCommon->State, IkeStateAuth);\r | |
1807 | } else {\r | |
1808 | ChildSaCommon->State = IkeStateCreateChild;\r | |
1809 | IKEV2_DUMP_STATE (ChildSaCommon->State, IkeStateCreateChild);\r | |
1810 | }\r | |
1811 | \r | |
1812 | //\r | |
1813 | // If SPD->Selector is not NULL, copy it to the ChildSaSession->SpdSelector.\r | |
1814 | // The ChildSaSession->SpdSelector might be changed after the traffic selector\r | |
1815 | // negoniation and it will be copied into the SAData after ChildSA established.\r | |
1816 | //\r | |
1817 | Ikev2ChildSaSessionSpdSelectorCreate (ChildSaSession);\r | |
1818 | \r | |
1819 | //\r | |
1820 | // Copy first NiBlock and NrBlock to ChildSa Session\r | |
1821 | //\r | |
1822 | ChildSaSession->NiBlock = AllocateZeroPool (IkeSaSession->NiBlkSize);\r | |
1823 | ASSERT (ChildSaSession->NiBlock != NULL);\r | |
1824 | ChildSaSession->NiBlkSize = IkeSaSession->NiBlkSize;\r | |
1825 | CopyMem (ChildSaSession->NiBlock, IkeSaSession->NiBlock, IkeSaSession->NiBlkSize);\r | |
1826 | \r | |
1827 | ChildSaSession->NrBlock = AllocateZeroPool (IkeSaSession->NrBlkSize);\r | |
1828 | ASSERT (ChildSaSession->NrBlock != NULL);\r | |
1829 | ChildSaSession->NrBlkSize = IkeSaSession->NrBlkSize;\r | |
1830 | CopyMem (ChildSaSession->NrBlock, IkeSaSession->NrBlock, IkeSaSession->NrBlkSize);\r | |
1831 | \r | |
1832 | //\r | |
1833 | // Only if the Create Child SA is called for the IKE_INIT Exchange and \r | |
1834 | // IkeSaSession is initiator (Only Initiator's SPD is not NULL), Set the \r | |
1835 | // Traffic Selectors related information here.\r | |
1836 | //\r | |
1837 | if (IkeSaSession->SessionCommon.State == IkeStateAuth && IkeSaSession->Spd != NULL) {\r | |
1838 | ChildSaSession->ProtoId = IkeSaSession->Spd->Selector->NextLayerProtocol;\r | |
1839 | ChildSaSession->LocalPort = IkeSaSession->Spd->Selector->LocalPort;\r | |
1840 | ChildSaSession->RemotePort = IkeSaSession->Spd->Selector->RemotePort;\r | |
1841 | }\r | |
1842 | \r | |
1843 | //\r | |
1844 | // Insert the new ChildSaSession into processing child SA list.\r | |
1845 | //\r | |
1846 | Ikev2ChildSaSessionInsert (&IkeSaSession->ChildSaSessionList, ChildSaSession);\r | |
1847 | return ChildSaSession;\r | |
1848 | }\r | |
1849 | \r | |
1850 | /**\r | |
1851 | Check if the SPD is related to the input Child SA Session.\r | |
1852 | \r | |
1853 | This function is the subfunction of Ikev1AssociateSpdEntry(). It is the call\r | |
1854 | back function of IpSecVisitConfigData(). \r | |
1855 | \r | |
1856 | \r | |
1857 | @param[in] Type Type of the input Config Selector.\r | |
1858 | @param[in] Selector Pointer to the Configure Selector to be checked. \r | |
1859 | @param[in] Data Pointer to the Configure Selector's Data passed \r | |
1860 | from the caller.\r | |
1861 | @param[in] SelectorSize The buffer size of Selector.\r | |
1862 | @param[in] DataSize The buffer size of the Data.\r | |
1863 | @param[in] Context The data passed from the caller. It is a Child\r | |
1864 | SA Session in this context.\r | |
1865 | \r | |
1866 | @retval EFI_SUCCESS The SPD Selector is not related to the Child SA Session. \r | |
1867 | @retval EFI_ABORTED The SPD Selector is related to the Child SA session and \r | |
1868 | set the ChildSaSession->Spd to point to this SPD Selector.\r | |
1869 | \r | |
1870 | **/\r | |
1871 | EFI_STATUS\r | |
1872 | Ikev2MatchSpdEntry (\r | |
1873 | IN EFI_IPSEC_CONFIG_DATA_TYPE Type,\r | |
1874 | IN EFI_IPSEC_CONFIG_SELECTOR *Selector,\r | |
1875 | IN VOID *Data,\r | |
1876 | IN UINTN SelectorSize,\r | |
1877 | IN UINTN DataSize,\r | |
1878 | IN VOID *Context\r | |
1879 | )\r | |
1880 | {\r | |
1881 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
1882 | EFI_IPSEC_SPD_SELECTOR *SpdSelector;\r | |
1883 | EFI_IPSEC_SPD_DATA *SpdData;\r | |
1884 | BOOLEAN IsMatch;\r | |
1885 | UINT8 IpVersion;\r | |
1886 | \r | |
1887 | ASSERT (Type == IPsecConfigDataTypeSpd);\r | |
1888 | SpdData = (EFI_IPSEC_SPD_DATA *) Data;\r | |
1889 | //\r | |
1890 | // Bypass all non-protect SPD entry first\r | |
1891 | //\r | |
1892 | if (SpdData->Action != EfiIPsecActionProtect) {\r | |
1893 | return EFI_SUCCESS;\r | |
1894 | }\r | |
1895 | \r | |
1896 | ChildSaSession = (IKEV2_CHILD_SA_SESSION *) Context;\r | |
1897 | IpVersion = ChildSaSession->SessionCommon.UdpService->IpVersion;\r | |
1898 | SpdSelector = (EFI_IPSEC_SPD_SELECTOR *) Selector; \r | |
1899 | IsMatch = TRUE;\r | |
1900 | \r | |
1901 | if (SpdSelector->NextLayerProtocol == EFI_IP_PROTO_UDP &&\r | |
1902 | SpdSelector->LocalPort == IKE_DEFAULT_PORT &&\r | |
1903 | SpdSelector->LocalPortRange == 0 &&\r | |
1904 | SpdSelector->RemotePort == IKE_DEFAULT_PORT &&\r | |
1905 | SpdSelector->RemotePortRange == 0\r | |
1906 | ) {\r | |
1907 | //\r | |
1908 | // TODO: Skip IKE Policy here or set a SPD entry?\r | |
1909 | //\r | |
1910 | return EFI_SUCCESS;\r | |
1911 | }\r | |
1912 | \r | |
1913 | if (SpdSelector->NextLayerProtocol != EFI_IPSEC_ANY_PROTOCOL &&\r | |
1914 | SpdSelector->NextLayerProtocol != ChildSaSession->ProtoId\r | |
1915 | ) {\r | |
1916 | IsMatch = FALSE;\r | |
1917 | }\r | |
1918 | \r | |
1919 | if (SpdSelector->LocalPort != EFI_IPSEC_ANY_PORT && SpdSelector->LocalPort != ChildSaSession->LocalPort) {\r | |
1920 | IsMatch = FALSE;\r | |
1921 | }\r | |
1922 | \r | |
1923 | if (SpdSelector->RemotePort != EFI_IPSEC_ANY_PORT && SpdSelector->RemotePort != ChildSaSession->RemotePort) {\r | |
1924 | IsMatch = FALSE;\r | |
1925 | }\r | |
1926 | \r | |
1927 | IsMatch = (BOOLEAN) (IsMatch && \r | |
1928 | IpSecMatchIpAddress (\r | |
1929 | IpVersion,\r | |
1930 | &ChildSaSession->SessionCommon.LocalPeerIp,\r | |
1931 | SpdSelector->LocalAddress,\r | |
1932 | SpdSelector->LocalAddressCount\r | |
1933 | ));\r | |
1934 | \r | |
1935 | IsMatch = (BOOLEAN) (IsMatch && \r | |
1936 | IpSecMatchIpAddress (\r | |
1937 | IpVersion,\r | |
1938 | &ChildSaSession->SessionCommon.RemotePeerIp,\r | |
1939 | SpdSelector->RemoteAddress,\r | |
1940 | SpdSelector->RemoteAddressCount\r | |
1941 | ));\r | |
1942 | \r | |
1943 | if (IsMatch) {\r | |
1944 | ChildSaSession->Spd = IkeSearchSpdEntry (SpdSelector);\r | |
1945 | return EFI_ABORTED;\r | |
1946 | } else {\r | |
1947 | return EFI_SUCCESS;\r | |
1948 | }\r | |
1949 | }\r | |
1950 | \r | |
1951 | /**\r | |
1952 | Check if the Algorithm ID is supported.\r | |
1953 | \r | |
1954 | @param[in] AlgorithmId The specified Algorithm ID.\r | |
1955 | @param[in] Type The type used to indicate the Algorithm is for Encrypt or\r | |
1956 | Authentication.\r | |
1957 | \r | |
1958 | @retval TRUE If the Algorithm ID is supported.\r | |
1959 | @retval FALSE If the Algorithm ID is not supported.\r | |
1960 | \r | |
1961 | **/\r | |
1962 | BOOLEAN\r | |
1963 | Ikev2IsSupportAlg (\r | |
1964 | IN UINT16 AlgorithmId,\r | |
1965 | IN UINT8 Type\r | |
1966 | )\r | |
1967 | {\r | |
1968 | UINT8 Index;\r | |
1969 | switch (Type) {\r | |
1970 | case IKE_ENCRYPT_TYPE :\r | |
1971 | for (Index = 0; Index < IKEV2_SUPPORT_ENCRYPT_ALGORITHM_NUM; Index++) {\r | |
1972 | if (mIkev2EncryptAlgorithmList[Index] == AlgorithmId) {\r | |
1973 | return TRUE;\r | |
1974 | }\r | |
1975 | }\r | |
1976 | break;\r | |
1977 | \r | |
1978 | case IKE_AUTH_TYPE :\r | |
1979 | for (Index = 0; Index < IKEV2_SUPPORT_AUTH_ALGORITHM_NUM; Index++) {\r | |
1980 | if (mIkev2AuthAlgorithmList[Index] == AlgorithmId) {\r | |
1981 | return TRUE;\r | |
1982 | }\r | |
1983 | }\r | |
1984 | break;\r | |
1985 | \r | |
1986 | case IKE_DH_TYPE :\r | |
1987 | for (Index = 0; Index < IKEV2_SUPPORT_DH_ALGORITHM_NUM; Index++) {\r | |
1988 | if (mIkev2DhGroupAlgorithmList[Index] == AlgorithmId) {\r | |
1989 | return TRUE;\r | |
1990 | }\r | |
1991 | }\r | |
1992 | break;\r | |
1993 | \r | |
1994 | case IKE_PRF_TYPE :\r | |
1995 | for (Index = 0; Index < IKEV2_SUPPORT_PRF_ALGORITHM_NUM; Index++) {\r | |
1996 | if (mIkev2PrfAlgorithmList[Index] == AlgorithmId) {\r | |
1997 | return TRUE;\r | |
1998 | }\r | |
1999 | }\r | |
2000 | }\r | |
2001 | return FALSE;\r | |
2002 | }\r | |
2003 | \r | |
2004 | /**\r | |
2005 | Get the preferred algorithm types from ProposalData.\r | |
2006 | \r | |
2007 | @param[in] ProposalData Pointer to related IKEV2_PROPOSAL_DATA.\r | |
2008 | @param[out] PreferEncryptAlgorithm Output of preferred encrypt algorithm.\r | |
2009 | @param[out] PreferIntegrityAlgorithm Output of preferred integrity algorithm. \r | |
2010 | @param[out] PreferPrfAlgorithm Output of preferred PRF algorithm. Only \r | |
2011 | for IKE SA.\r | |
2012 | @param[out] PreferDhGroup Output of preferred DH group. Only for \r | |
2013 | IKE SA.\r | |
2014 | @param[out] PreferEncryptKeylength Output of preferred encrypt key length \r | |
2015 | in bytes.\r | |
2016 | @param[out] IsSupportEsn Output of value about the Extented Sequence\r | |
2017 | Number is support or not. Only for Child SA.\r | |
2018 | @param[in] IsChildSa If it is ture, the ProposalData is for IKE\r | |
2019 | SA. Otherwise the proposalData is for Child SA.\r | |
2020 | \r | |
2021 | **/\r | |
2022 | VOID\r | |
2023 | Ikev2ParseProposalData (\r | |
2024 | IN IKEV2_PROPOSAL_DATA *ProposalData, \r | |
2025 | OUT UINT16 *PreferEncryptAlgorithm,\r | |
2026 | OUT UINT16 *PreferIntegrityAlgorithm,\r | |
2027 | OUT UINT16 *PreferPrfAlgorithm,\r | |
2028 | OUT UINT16 *PreferDhGroup,\r | |
2029 | OUT UINTN *PreferEncryptKeylength,\r | |
2030 | OUT BOOLEAN *IsSupportEsn,\r | |
2031 | IN BOOLEAN IsChildSa\r | |
2032 | ) \r | |
2033 | {\r | |
2034 | IKEV2_TRANSFORM_DATA *TransformData;\r | |
2035 | UINT8 TransformIndex;\r | |
2036 | \r | |
2037 | //\r | |
2038 | // Check input parameters.\r | |
2039 | //\r | |
2040 | if (ProposalData == NULL ||\r | |
2041 | PreferEncryptAlgorithm == NULL || \r | |
2042 | PreferIntegrityAlgorithm == NULL ||\r | |
2043 | PreferEncryptKeylength == NULL\r | |
2044 | ) {\r | |
2045 | return;\r | |
2046 | }\r | |
2047 | \r | |
2048 | if (IsChildSa) {\r | |
2049 | if (IsSupportEsn == NULL) {\r | |
2050 | return;\r | |
2051 | }\r | |
2052 | } else {\r | |
2053 | if (PreferPrfAlgorithm == NULL || PreferDhGroup == NULL) {\r | |
2054 | return;\r | |
2055 | }\r | |
2056 | } \r | |
2057 | \r | |
2058 | TransformData = (IKEV2_TRANSFORM_DATA *)(ProposalData + 1);\r | |
2059 | for (TransformIndex = 0; TransformIndex < ProposalData->NumTransforms; TransformIndex++) {\r | |
2060 | switch (TransformData->TransformType) { \r | |
2061 | //\r | |
2062 | // For IKE SA there are four algorithm types. Encryption Algorithm, Pseudo-random Function, \r | |
2063 | // Integrity Algorithm, Diffie-Hellman Group. For Child SA, there are three algorithm types. \r | |
2064 | // Encryption Algorithm, Integrity Algorithm, Extended Sequence Number.\r | |
2065 | //\r | |
2066 | case IKEV2_TRANSFORM_TYPE_ENCR:\r | |
2067 | if (*PreferEncryptAlgorithm == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_ENCRYPT_TYPE)) {\r | |
2068 | //\r | |
2069 | // Check the attribute value. According to RFC, only Keylength is support.\r | |
2070 | //\r | |
2071 | if (TransformData->Attribute.AttrType == IKEV2_ATTRIBUTE_TYPE_KEYLEN) {\r | |
2072 | //\r | |
2073 | // If the Keylength is not support, continue to check the next one.\r | |
2074 | //\r | |
2075 | if (IpSecGetEncryptKeyLength ((UINT8)TransformData->TransformId) != (UINTN)(TransformData->Attribute.Attr.AttrValue >> 3)){\r | |
2076 | break;\r | |
2077 | } else {\r | |
2078 | *PreferEncryptKeylength = TransformData->Attribute.Attr.AttrValue;\r | |
2079 | }\r | |
2080 | }\r | |
2081 | *PreferEncryptAlgorithm = TransformData->TransformId;\r | |
2082 | }\r | |
2083 | break;\r | |
2084 | \r | |
2085 | case IKEV2_TRANSFORM_TYPE_PRF :\r | |
2086 | if (!IsChildSa) {\r | |
2087 | if (*PreferPrfAlgorithm == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_PRF_TYPE)) {\r | |
2088 | *PreferPrfAlgorithm = TransformData->TransformId;\r | |
2089 | }\r | |
2090 | } \r | |
2091 | break;\r | |
2092 | \r | |
2093 | case IKEV2_TRANSFORM_TYPE_INTEG :\r | |
2094 | if (*PreferIntegrityAlgorithm == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_AUTH_TYPE)) {\r | |
2095 | *PreferIntegrityAlgorithm = TransformData->TransformId;\r | |
2096 | }\r | |
2097 | break;\r | |
2098 | \r | |
2099 | case IKEV2_TRANSFORM_TYPE_DH :\r | |
2100 | if (!IsChildSa) {\r | |
2101 | if (*PreferDhGroup == 0 && Ikev2IsSupportAlg (TransformData->TransformId, IKE_DH_TYPE)) {\r | |
2102 | *PreferDhGroup = TransformData->TransformId;\r | |
2103 | }\r | |
2104 | } \r | |
2105 | break;\r | |
2106 | \r | |
2107 | case IKEV2_TRANSFORM_TYPE_ESN :\r | |
2108 | if (IsChildSa) {\r | |
2109 | if (TransformData->TransformId != 0) {\r | |
2110 | *IsSupportEsn = TRUE;\r | |
2111 | }\r | |
2112 | } \r | |
2113 | break;\r | |
2114 | \r | |
2115 | default:\r | |
2116 | break;\r | |
2117 | }\r | |
2118 | TransformData = (IKEV2_TRANSFORM_DATA *)(TransformData + 1);\r | |
2119 | }\r | |
2120 | }\r | |
2121 | \r | |
2122 | /**\r | |
2123 | Parse the received Initial Exchange Packet.\r | |
2124 | \r | |
2125 | This function parse the SA Payload and Key Payload to find out the cryptographic \r | |
2126 | suite for the further IKE negotiation and fill it into the IKE SA Session's \r | |
2127 | CommonSession->SaParams.\r | |
2128 | \r | |
2129 | @param[in, out] IkeSaSession Pointer to related IKEV2_SA_SESSION.\r | |
2130 | @param[in] SaPayload The received packet.\r | |
2131 | @param[in] Type The received packet IKE header flag. \r | |
2132 | \r | |
2133 | @retval TRUE If the SA proposal in Packet is acceptable.\r | |
2134 | @retval FALSE If the SA proposal in Packet is not acceptable.\r | |
2135 | \r | |
2136 | **/\r | |
2137 | BOOLEAN\r | |
2138 | Ikev2SaParseSaPayload (\r | |
2139 | IN OUT IKEV2_SA_SESSION *IkeSaSession,\r | |
2140 | IN IKE_PAYLOAD *SaPayload,\r | |
2141 | IN UINT8 Type\r | |
2142 | )\r | |
2143 | {\r | |
2144 | IKEV2_PROPOSAL_DATA *ProposalData;\r | |
2145 | UINT8 ProposalIndex;\r | |
2146 | UINT16 PreferEncryptAlgorithm;\r | |
2147 | UINT16 PreferIntegrityAlgorithm;\r | |
2148 | UINT16 PreferPrfAlgorithm;\r | |
2149 | UINT16 PreferDhGroup;\r | |
2150 | UINTN PreferEncryptKeylength;\r | |
2151 | UINT16 EncryptAlgorithm;\r | |
2152 | UINT16 IntegrityAlgorithm;\r | |
2153 | UINT16 PrfAlgorithm;\r | |
2154 | UINT16 DhGroup;\r | |
2155 | UINTN EncryptKeylength;\r | |
2156 | BOOLEAN IsMatch;\r | |
2157 | UINTN SaDataSize;\r | |
2158 | \r | |
2159 | PreferPrfAlgorithm = 0;\r | |
2160 | PreferIntegrityAlgorithm = 0;\r | |
2161 | PreferDhGroup = 0;\r | |
2162 | PreferEncryptAlgorithm = 0;\r | |
2163 | PreferEncryptKeylength = 0;\r | |
2164 | PrfAlgorithm = 0;\r | |
2165 | IntegrityAlgorithm = 0;\r | |
2166 | DhGroup = 0;\r | |
2167 | EncryptAlgorithm = 0;\r | |
2168 | EncryptKeylength = 0;\r | |
2169 | IsMatch = FALSE;\r | |
2170 | \r | |
2171 | if (Type == IKE_HEADER_FLAGS_INIT) {\r | |
2172 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *)SaPayload->PayloadBuf + 1);\r | |
2173 | for (ProposalIndex = 0; ProposalIndex < ((IKEV2_SA_DATA *)SaPayload->PayloadBuf)->NumProposals; ProposalIndex++) {\r | |
2174 | //\r | |
2175 | // Iterate each proposal to find the perfered one.\r | |
2176 | //\r | |
2177 | if (ProposalData->ProtocolId == IPSEC_PROTO_ISAKMP && ProposalData->NumTransforms >= 4) {\r | |
2178 | //\r | |
2179 | // Get the preferred algorithms.\r | |
2180 | //\r | |
2181 | Ikev2ParseProposalData (\r | |
2182 | ProposalData, \r | |
2183 | &PreferEncryptAlgorithm,\r | |
2184 | &PreferIntegrityAlgorithm,\r | |
2185 | &PreferPrfAlgorithm,\r | |
2186 | &PreferDhGroup,\r | |
2187 | &PreferEncryptKeylength,\r | |
2188 | NULL,\r | |
2189 | FALSE\r | |
2190 | );\r | |
2191 | \r | |
2192 | if (PreferEncryptAlgorithm != 0 &&\r | |
2193 | PreferIntegrityAlgorithm != 0 &&\r | |
2194 | PreferPrfAlgorithm != 0 && \r | |
2195 | PreferDhGroup != 0\r | |
2196 | ) {\r | |
2197 | //\r | |
2198 | // Find the matched one. \r | |
2199 | //\r | |
2200 | IkeSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
2201 | ASSERT (IkeSaSession->SessionCommon.SaParams != NULL);\r | |
2202 | IkeSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r | |
2203 | IkeSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2204 | IkeSaSession->SessionCommon.SaParams->DhGroup = PreferDhGroup;\r | |
2205 | IkeSaSession->SessionCommon.SaParams->Prf = PreferPrfAlgorithm;\r | |
2206 | IkeSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2207 | IkeSaSession->SessionCommon.PreferDhGroup = PreferDhGroup;\r | |
2208 | \r | |
2209 | //\r | |
2210 | // Save the matched one in IKEV2_SA_DATA for furthure calculation.\r | |
2211 | //\r | |
2212 | SaDataSize = sizeof (IKEV2_SA_DATA) +\r | |
2213 | sizeof (IKEV2_PROPOSAL_DATA) +\r | |
2214 | sizeof (IKEV2_TRANSFORM_DATA) * 4;\r | |
2215 | IkeSaSession->SaData = AllocateZeroPool (SaDataSize);\r | |
2216 | ASSERT (IkeSaSession->SaData != NULL);\r | |
2217 | \r | |
2218 | IkeSaSession->SaData->NumProposals = 1;\r | |
2219 | \r | |
2220 | //\r | |
2221 | // BUGBUG: Suppose the matched proposal only has 4 transforms. If\r | |
2222 | // The matched Proposal has more than 4 transforms means it contains\r | |
2223 | // one than one transform with same type.\r | |
2224 | //\r | |
2225 | CopyMem (\r | |
2226 | (IKEV2_PROPOSAL_DATA *) (IkeSaSession->SaData + 1), \r | |
2227 | ProposalData, \r | |
2228 | SaDataSize - sizeof (IKEV2_SA_DATA)\r | |
2229 | );\r | |
2230 | \r | |
2231 | ((IKEV2_PROPOSAL_DATA *) (IkeSaSession->SaData + 1))->ProposalIndex = 1;\r | |
2232 | return TRUE;\r | |
2233 | } else {\r | |
2234 | PreferEncryptAlgorithm = 0;\r | |
2235 | PreferIntegrityAlgorithm = 0;\r | |
2236 | PreferPrfAlgorithm = 0;\r | |
2237 | PreferDhGroup = 0;\r | |
2238 | PreferEncryptKeylength = 0;\r | |
2239 | }\r | |
2240 | }\r | |
2241 | //\r | |
2242 | // Point to next Proposal.\r | |
2243 | //\r | |
2244 | ProposalData = (IKEV2_PROPOSAL_DATA*)((UINT8*)(ProposalData + 1) + \r | |
2245 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA));\r | |
2246 | }\r | |
2247 | } else if (Type == IKE_HEADER_FLAGS_RESPOND) {\r | |
2248 | //\r | |
2249 | // First check the SA proposal's ProtoctolID and Transform Numbers. Since it is \r | |
2250 | // the responded SA proposal, suppose it only has one proposal and the transform Numbers \r | |
2251 | // is 4. \r | |
2252 | //\r | |
2253 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *) SaPayload->PayloadBuf + 1);\r | |
2254 | if (ProposalData->ProtocolId != IPSEC_PROTO_ISAKMP || ProposalData->NumTransforms != 4) {\r | |
2255 | return FALSE;\r | |
2256 | }\r | |
2257 | //\r | |
2258 | // Get the preferred algorithms. \r | |
2259 | //\r | |
2260 | Ikev2ParseProposalData (\r | |
2261 | ProposalData,\r | |
2262 | &PreferEncryptAlgorithm,\r | |
2263 | &PreferIntegrityAlgorithm,\r | |
2264 | &PreferPrfAlgorithm,\r | |
2265 | &PreferDhGroup,\r | |
2266 | &PreferEncryptKeylength,\r | |
2267 | NULL, \r | |
2268 | FALSE\r | |
2269 | );\r | |
2270 | // \r | |
2271 | // Check if the Sa proposal data from received packet is in the IkeSaSession->SaData.\r | |
2272 | //\r | |
2273 | ProposalData = (IKEV2_PROPOSAL_DATA *) (IkeSaSession->SaData + 1);\r | |
2274 | \r | |
2275 | for (ProposalIndex = 0; ProposalIndex < IkeSaSession->SaData->NumProposals && (!IsMatch); ProposalIndex++) {\r | |
2276 | Ikev2ParseProposalData (\r | |
2277 | ProposalData, \r | |
2278 | &EncryptAlgorithm,\r | |
2279 | &IntegrityAlgorithm,\r | |
2280 | &PrfAlgorithm,\r | |
2281 | &DhGroup,\r | |
2282 | &EncryptKeylength,\r | |
2283 | NULL,\r | |
2284 | FALSE\r | |
2285 | );\r | |
2286 | if (EncryptAlgorithm == PreferEncryptAlgorithm &&\r | |
2287 | EncryptKeylength == PreferEncryptKeylength &&\r | |
2288 | IntegrityAlgorithm == PreferIntegrityAlgorithm &&\r | |
2289 | PrfAlgorithm == PreferPrfAlgorithm &&\r | |
2290 | DhGroup == PreferDhGroup\r | |
2291 | ) {\r | |
2292 | IsMatch = TRUE;\r | |
2293 | } else {\r | |
2294 | EncryptAlgorithm = 0;\r | |
2295 | IntegrityAlgorithm = 0;\r | |
2296 | PrfAlgorithm = 0;\r | |
2297 | DhGroup = 0;\r | |
2298 | EncryptKeylength = 0; \r | |
2299 | }\r | |
2300 | \r | |
2301 | ProposalData = (IKEV2_PROPOSAL_DATA*)((UINT8*)(ProposalData + 1) + \r | |
2302 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA)); \r | |
2303 | }\r | |
2304 | \r | |
2305 | if (IsMatch) {\r | |
2306 | IkeSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
2307 | ASSERT (IkeSaSession->SessionCommon.SaParams != NULL);\r | |
2308 | IkeSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r | |
2309 | IkeSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2310 | IkeSaSession->SessionCommon.SaParams->DhGroup = PreferDhGroup;\r | |
2311 | IkeSaSession->SessionCommon.SaParams->Prf = PreferPrfAlgorithm;\r | |
2312 | IkeSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2313 | IkeSaSession->SessionCommon.PreferDhGroup = PreferDhGroup;\r | |
2314 | \r | |
2315 | return TRUE;\r | |
2316 | }\r | |
2317 | }\r | |
2318 | return FALSE;\r | |
2319 | }\r | |
2320 | \r | |
2321 | /**\r | |
2322 | Parse the received Authentication Exchange Packet.\r | |
2323 | \r | |
2324 | This function parse the SA Payload and Key Payload to find out the cryptographic\r | |
2325 | suite for the ESP and fill it into the Child SA Session's CommonSession->SaParams.\r | |
2326 | \r | |
2327 | @param[in, out] ChildSaSession Pointer to IKEV2_CHILD_SA_SESSION related to \r | |
2328 | this Authentication Exchange.\r | |
2329 | @param[in] SaPayload The received packet.\r | |
2330 | @param[in] Type The IKE header's flag of received packet . \r | |
2331 | \r | |
2332 | @retval TRUE If the SA proposal in Packet is acceptable.\r | |
2333 | @retval FALSE If the SA proposal in Packet is not acceptable.\r | |
2334 | \r | |
2335 | **/\r | |
2336 | BOOLEAN\r | |
2337 | Ikev2ChildSaParseSaPayload (\r | |
2338 | IN OUT IKEV2_CHILD_SA_SESSION *ChildSaSession,\r | |
2339 | IN IKE_PAYLOAD *SaPayload,\r | |
2340 | IN UINT8 Type\r | |
2341 | )\r | |
2342 | {\r | |
2343 | IKEV2_PROPOSAL_DATA *ProposalData;\r | |
2344 | UINT8 ProposalIndex;\r | |
2345 | UINT16 PreferEncryptAlgorithm;\r | |
2346 | UINT16 PreferIntegrityAlgorithm;\r | |
2347 | UINTN PreferEncryptKeylength;\r | |
2348 | BOOLEAN PreferIsSupportEsn;\r | |
2349 | UINT16 EncryptAlgorithm;\r | |
2350 | UINT16 IntegrityAlgorithm;\r | |
2351 | UINTN EncryptKeylength;\r | |
2352 | BOOLEAN IsSupportEsn;\r | |
2353 | BOOLEAN IsMatch;\r | |
2354 | UINTN SaDataSize;\r | |
2355 | \r | |
2356 | \r | |
2357 | PreferIntegrityAlgorithm = 0;\r | |
2358 | PreferEncryptAlgorithm = 0;\r | |
2359 | PreferEncryptKeylength = 0;\r | |
2360 | IntegrityAlgorithm = 0;\r | |
2361 | EncryptAlgorithm = 0;\r | |
2362 | EncryptKeylength = 0;\r | |
2363 | IsMatch = TRUE;\r | |
2364 | IsSupportEsn = FALSE;\r | |
2365 | PreferIsSupportEsn = FALSE;\r | |
2366 | \r | |
2367 | if (Type == IKE_HEADER_FLAGS_INIT) {\r | |
2368 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *) SaPayload->PayloadBuf + 1);\r | |
2369 | for (ProposalIndex = 0; ProposalIndex < ((IKEV2_SA_DATA *) SaPayload->PayloadBuf)->NumProposals; ProposalIndex++) {\r | |
2370 | //\r | |
2371 | // Iterate each proposal to find the preferred one.\r | |
2372 | //\r | |
2373 | if (ProposalData->ProtocolId == IPSEC_PROTO_IPSEC_ESP && ProposalData->NumTransforms >= 3) {\r | |
2374 | //\r | |
2375 | // Get the preferred algorithm.\r | |
2376 | //\r | |
2377 | Ikev2ParseProposalData (\r | |
2378 | ProposalData,\r | |
2379 | &PreferEncryptAlgorithm,\r | |
2380 | &PreferIntegrityAlgorithm,\r | |
2381 | NULL,\r | |
2382 | NULL,\r | |
2383 | &PreferEncryptKeylength,\r | |
2384 | &IsSupportEsn,\r | |
2385 | TRUE\r | |
2386 | );\r | |
2387 | //\r | |
2388 | // Don't support the ESN now.\r | |
2389 | //\r | |
2390 | if (PreferEncryptAlgorithm != 0 && \r | |
2391 | PreferIntegrityAlgorithm != 0 &&\r | |
2392 | !IsSupportEsn\r | |
2393 | ) {\r | |
2394 | //\r | |
2395 | // Find the matched one. \r | |
2396 | //\r | |
2397 | ChildSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
2398 | ASSERT (ChildSaSession->SessionCommon.SaParams != NULL);\r | |
2399 | ChildSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r | |
2400 | ChildSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2401 | ChildSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2402 | CopyMem (&ChildSaSession->RemotePeerSpi, ProposalData->Spi, sizeof (ChildSaSession->RemotePeerSpi));\r | |
2403 | \r | |
2404 | //\r | |
2405 | // Save the matched one in IKEV2_SA_DATA for furthure calculation.\r | |
2406 | //\r | |
2407 | SaDataSize = sizeof (IKEV2_SA_DATA) +\r | |
2408 | sizeof (IKEV2_PROPOSAL_DATA) +\r | |
2409 | sizeof (IKEV2_TRANSFORM_DATA) * 4;\r | |
2410 | \r | |
2411 | ChildSaSession->SaData = AllocateZeroPool (SaDataSize);\r | |
2412 | ASSERT (ChildSaSession->SaData != NULL);\r | |
2413 | \r | |
2414 | ChildSaSession->SaData->NumProposals = 1;\r | |
2415 | \r | |
2416 | //\r | |
2417 | // BUGBUG: Suppose there are 4 transforms in the matched proposal. If\r | |
2418 | // the matched Proposal has more than 4 transforms that means there \r | |
2419 | // are more than one transform with same type.\r | |
2420 | //\r | |
2421 | CopyMem (\r | |
2422 | (IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1),\r | |
2423 | ProposalData,\r | |
2424 | SaDataSize - sizeof (IKEV2_SA_DATA)\r | |
2425 | );\r | |
2426 | \r | |
2427 | ((IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1))->ProposalIndex = 1;\r | |
2428 | \r | |
2429 | ((IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1))->Spi = AllocateCopyPool (\r | |
2430 | sizeof (ChildSaSession->LocalPeerSpi), \r | |
2431 | &ChildSaSession->LocalPeerSpi\r | |
2432 | );\r | |
2433 | ASSERT (((IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1))->Spi != NULL);\r | |
2434 | return TRUE;\r | |
2435 | \r | |
2436 | } else {\r | |
2437 | PreferEncryptAlgorithm = 0;\r | |
2438 | PreferIntegrityAlgorithm = 0;\r | |
2439 | IsSupportEsn = TRUE;\r | |
2440 | }\r | |
2441 | }\r | |
2442 | //\r | |
2443 | // Point to next Proposal\r | |
2444 | //\r | |
2445 | ProposalData = (IKEV2_PROPOSAL_DATA *)((UINT8 *)(ProposalData + 1) + \r | |
2446 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA));\r | |
2447 | }\r | |
2448 | } else if (Type == IKE_HEADER_FLAGS_RESPOND) {\r | |
2449 | //\r | |
2450 | // First check the SA proposal's ProtoctolID and Transform Numbers. Since it is \r | |
2451 | // the responded SA proposal, suppose it only has one proposal and the transform Numbers \r | |
2452 | // is 3. \r | |
2453 | //\r | |
2454 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *)SaPayload->PayloadBuf + 1);\r | |
2455 | if (ProposalData->ProtocolId != IPSEC_PROTO_IPSEC_ESP || ProposalData->NumTransforms != 3) {\r | |
2456 | return FALSE;\r | |
2457 | }\r | |
2458 | //\r | |
2459 | // Get the preferred algorithms.\r | |
2460 | //\r | |
2461 | Ikev2ParseProposalData (\r | |
2462 | ProposalData,\r | |
2463 | &PreferEncryptAlgorithm,\r | |
2464 | &PreferIntegrityAlgorithm,\r | |
2465 | NULL,\r | |
2466 | NULL,\r | |
2467 | &PreferEncryptKeylength,\r | |
2468 | &PreferIsSupportEsn,\r | |
2469 | TRUE\r | |
2470 | );\r | |
2471 | \r | |
2472 | ProposalData = (IKEV2_PROPOSAL_DATA *) (ChildSaSession->SaData + 1);\r | |
2473 | \r | |
2474 | for (ProposalIndex = 0; ProposalIndex < ChildSaSession->SaData->NumProposals && (!IsMatch); ProposalIndex++) {\r | |
2475 | Ikev2ParseProposalData (\r | |
2476 | ProposalData, \r | |
2477 | &EncryptAlgorithm,\r | |
2478 | &IntegrityAlgorithm,\r | |
2479 | NULL,\r | |
2480 | NULL,\r | |
2481 | &EncryptKeylength,\r | |
2482 | &IsSupportEsn,\r | |
2483 | TRUE\r | |
2484 | );\r | |
2485 | if (EncryptAlgorithm == PreferEncryptAlgorithm &&\r | |
2486 | EncryptKeylength == PreferEncryptKeylength &&\r | |
2487 | IntegrityAlgorithm == PreferIntegrityAlgorithm &&\r | |
2488 | IsSupportEsn == PreferIsSupportEsn \r | |
2489 | ) {\r | |
2490 | IsMatch = TRUE;\r | |
2491 | } else {\r | |
2492 | PreferEncryptAlgorithm = 0;\r | |
2493 | PreferIntegrityAlgorithm = 0;\r | |
2494 | IsSupportEsn = TRUE;\r | |
2495 | }\r | |
2496 | ProposalData = (IKEV2_PROPOSAL_DATA*)((UINT8*)(ProposalData + 1) + \r | |
2497 | ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA)); \r | |
2498 | }\r | |
2499 | \r | |
2500 | ProposalData = (IKEV2_PROPOSAL_DATA *)((IKEV2_SA_DATA *)SaPayload->PayloadBuf + 1);\r | |
2501 | if (IsMatch) {\r | |
2502 | ChildSaSession->SessionCommon.SaParams = AllocateZeroPool (sizeof (IKEV2_SA_PARAMS));\r | |
2503 | ASSERT (ChildSaSession->SessionCommon.SaParams != NULL);\r | |
2504 | ChildSaSession->SessionCommon.SaParams->EncAlgId = PreferEncryptAlgorithm;\r | |
2505 | ChildSaSession->SessionCommon.SaParams->EnckeyLen = PreferEncryptKeylength;\r | |
2506 | ChildSaSession->SessionCommon.SaParams->IntegAlgId = PreferIntegrityAlgorithm;\r | |
2507 | CopyMem (&ChildSaSession->RemotePeerSpi, ProposalData->Spi, sizeof (ChildSaSession->RemotePeerSpi));\r | |
2508 | \r | |
2509 | return TRUE;\r | |
2510 | }\r | |
2511 | }\r | |
2512 | return FALSE;\r | |
2513 | }\r | |
2514 | \r | |
2515 | /**\r | |
2516 | Generate Key buffer from fragments.\r | |
2517 | \r | |
2518 | If the digest length of specified HashAlgId is larger than or equal with the \r | |
2519 | required output key length, derive the key directly. Otherwise, Key Material \r | |
2520 | needs to be PRF-based concatenation according to 2.13 of RFC 4306: \r | |
2521 | prf+ (K,S) = T1 | T2 | T3 | T4 | ..., T1 = prf (K, S | 0x01),\r | |
2522 | T2 = prf (K, T1 | S | 0x02), T3 = prf (K, T2 | S | 0x03),T4 = prf (K, T3 | S | 0x04)\r | |
2523 | then derive the key from this key material.\r | |
2524 | \r | |
2525 | @param[in] HashAlgId The Hash Algorithm ID used to generate key.\r | |
2526 | @param[in] HashKey Pointer to a key buffer which contains hash key.\r | |
2527 | @param[in] HashKeyLength The length of HashKey in bytes.\r | |
2528 | @param[in, out] OutputKey Pointer to buffer which is used to receive the \r | |
2529 | output key.\r | |
2530 | @param[in] OutputKeyLength The length of OutPutKey buffer.\r | |
2531 | @param[in] Fragments Pointer to the data to be used to generate key.\r | |
2532 | @param[in] NumFragments The numbers of the Fragement.\r | |
2533 | \r | |
2534 | @retval EFI_SUCCESS The operation complete successfully.\r | |
2535 | @retval EFI_INVALID_PARAMETER If NumFragments is zero.\r | |
2536 | @retval EFI_OUT_OF_RESOURCES If the required resource can't be allocated.\r | |
2537 | @retval Others The operation is failed.\r | |
2538 | \r | |
2539 | **/\r | |
2540 | EFI_STATUS\r | |
2541 | Ikev2SaGenerateKey (\r | |
2542 | IN UINT8 HashAlgId,\r | |
2543 | IN UINT8 *HashKey,\r | |
2544 | IN UINTN HashKeyLength,\r | |
2545 | IN OUT UINT8 *OutputKey,\r | |
2546 | IN UINTN OutputKeyLength,\r | |
2547 | IN PRF_DATA_FRAGMENT *Fragments,\r | |
2548 | IN UINTN NumFragments\r | |
2549 | )\r | |
2550 | {\r | |
2551 | EFI_STATUS Status;\r | |
2552 | PRF_DATA_FRAGMENT LocalFragments[3];\r | |
2553 | UINT8 *Digest;\r | |
2554 | UINTN DigestSize;\r | |
2555 | UINTN Round;\r | |
2556 | UINTN Index;\r | |
2557 | UINTN AuthKeyLength;\r | |
2558 | UINTN FragmentsSize;\r | |
2559 | UINT8 TailData;\r | |
2560 | \r | |
2561 | Status = EFI_SUCCESS;\r | |
2562 | \r | |
2563 | if (NumFragments == 0) {\r | |
2564 | return EFI_INVALID_PARAMETER;\r | |
2565 | }\r | |
2566 | \r | |
2567 | LocalFragments[0].Data = NULL;\r | |
2568 | LocalFragments[1].Data = NULL;\r | |
2569 | LocalFragments[2].Data = NULL;\r | |
2570 | \r | |
2571 | AuthKeyLength = IpSecGetHmacDigestLength (HashAlgId);\r | |
2572 | DigestSize = AuthKeyLength;\r | |
2573 | Digest = AllocateZeroPool (AuthKeyLength);\r | |
2574 | \r | |
2575 | if (Digest == NULL) {\r | |
2576 | return EFI_OUT_OF_RESOURCES;\r | |
2577 | }\r | |
2578 | //\r | |
2579 | // If the required output key length is less than the digest size,\r | |
2580 | // copy the digest into OutputKey.\r | |
2581 | //\r | |
2582 | if (OutputKeyLength <= DigestSize) {\r | |
2583 | Status = IpSecCryptoIoHmac (\r | |
2584 | HashAlgId,\r | |
2585 | HashKey, \r | |
2586 | HashKeyLength, \r | |
2587 | (HASH_DATA_FRAGMENT *) Fragments, \r | |
2588 | NumFragments, \r | |
2589 | Digest, \r | |
2590 | DigestSize\r | |
2591 | );\r | |
2592 | if (EFI_ERROR (Status)) {\r | |
2593 | goto Exit;\r | |
2594 | }\r | |
2595 | \r | |
2596 | CopyMem (OutputKey, Digest, OutputKeyLength);\r | |
2597 | goto Exit;\r | |
2598 | }\r | |
2599 | \r | |
2600 | //\r | |
2601 | //Otherwise, Key Material need to be PRF-based concatenation according to 2.13\r | |
2602 | //of RFC 4306: prf+ (K,S) = T1 | T2 | T3 | T4 | ..., T1 = prf (K, S | 0x01),\r | |
2603 | //T2 = prf (K, T1 | S | 0x02), T3 = prf (K, T2 | S | 0x03),T4 = prf (K, T3 | S | 0x04)\r | |
2604 | //then derive the key from this key material.\r | |
2605 | //\r | |
2606 | FragmentsSize = 0;\r | |
2607 | for (Index = 0; Index < NumFragments; Index++) {\r | |
2608 | FragmentsSize = FragmentsSize + Fragments[Index].DataSize;\r | |
2609 | }\r | |
2610 | \r | |
2611 | LocalFragments[1].Data = AllocateZeroPool (FragmentsSize);\r | |
2612 | ASSERT (LocalFragments[1].Data != NULL);\r | |
2613 | LocalFragments[1].DataSize = FragmentsSize;\r | |
2614 | \r | |
2615 | //\r | |
2616 | // Copy all input fragments into LocalFragments[1];\r | |
2617 | //\r | |
2618 | FragmentsSize = 0;\r | |
2619 | for (Index = 0; Index < NumFragments; Index++) {\r | |
2620 | CopyMem (\r | |
2621 | LocalFragments[1].Data + FragmentsSize, \r | |
2622 | Fragments[Index].Data,\r | |
2623 | Fragments[Index].DataSize\r | |
2624 | );\r | |
2625 | FragmentsSize = FragmentsSize + Fragments[Index].DataSize;\r | |
2626 | }\r | |
2627 | \r | |
2628 | //\r | |
2629 | // Prepare 0x01 as the first tail data.\r | |
2630 | //\r | |
2631 | TailData = 0x01;\r | |
2632 | LocalFragments[2].Data = &TailData;\r | |
2633 | LocalFragments[2].DataSize = sizeof (TailData);\r | |
2634 | //\r | |
2635 | // Allocate buffer for the first fragment\r | |
2636 | //\r | |
2637 | LocalFragments[0].Data = AllocateZeroPool (AuthKeyLength);\r | |
2638 | ASSERT (LocalFragments[0].Data != NULL);\r | |
2639 | LocalFragments[0].DataSize = AuthKeyLength;\r | |
2640 | \r | |
2641 | Round = (OutputKeyLength - 1) / AuthKeyLength + 1;\r | |
2642 | for (Index = 0; Index < Round; Index++) {\r | |
2643 | Status = IpSecCryptoIoHmac (\r | |
2644 | HashAlgId, \r | |
2645 | HashKey, \r | |
2646 | HashKeyLength, \r | |
2647 | (HASH_DATA_FRAGMENT *)(Index == 0 ? &LocalFragments[1] : LocalFragments),\r | |
2648 | Index == 0 ? 2 : 3, \r | |
2649 | Digest,\r | |
2650 | DigestSize\r | |
2651 | );\r | |
2652 | if (EFI_ERROR(Status)) {\r | |
2653 | goto Exit;\r | |
2654 | }\r | |
2655 | CopyMem (\r | |
2656 | LocalFragments[0].Data, \r | |
2657 | Digest, \r | |
2658 | DigestSize\r | |
2659 | );\r | |
2660 | if (OutputKeyLength > DigestSize * (Index + 1)) {\r | |
2661 | CopyMem (\r | |
2662 | OutputKey + Index * DigestSize, \r | |
2663 | Digest, \r | |
2664 | DigestSize\r | |
2665 | );\r | |
2666 | LocalFragments[0].DataSize = DigestSize;\r | |
2667 | TailData ++;\r | |
2668 | } else {\r | |
2669 | // \r | |
2670 | // The last round\r | |
2671 | //\r | |
2672 | CopyMem (\r | |
2673 | OutputKey + Index * DigestSize, \r | |
2674 | Digest, \r | |
2675 | OutputKeyLength - Index * DigestSize\r | |
2676 | );\r | |
2677 | }\r | |
2678 | }\r | |
2679 | \r | |
2680 | Exit:\r | |
2681 | //\r | |
2682 | // Only First and second Framgement Data need to be freed.\r | |
2683 | //\r | |
2684 | for (Index = 0 ; Index < 2; Index++) {\r | |
2685 | if (LocalFragments[Index].Data != NULL) {\r | |
2686 | FreePool (LocalFragments[Index].Data);\r | |
2687 | }\r | |
2688 | }\r | |
2689 | if (Digest != NULL) {\r | |
2690 | FreePool (Digest);\r | |
2691 | }\r | |
2692 | return Status;\r | |
2693 | }\r | |
2694 | \r |