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9166f840 | 1 | /** @file\r |
2 | Common operation of the IKE\r | |
3 | \r | |
ce68d3bc | 4 | Copyright (c) 2010 - 2012, 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 "Ike.h"\r | |
17 | #include "IkeCommon.h"\r | |
18 | #include "IpSecConfigImpl.h"\r | |
19 | #include "IpSecDebug.h"\r | |
20 | \r | |
21 | //\r | |
22 | // Initial the SPI\r | |
23 | //\r | |
24 | UINT32 mNextSpi = IKE_SPI_BASE;\r | |
ce68d3bc | 25 | EFI_GUID mZeroGuid = { 0, 0, 0, { 0, 0, 0, 0, 0, 0, 0, 0 } };\r |
9166f840 | 26 | \r |
27 | /**\r | |
28 | Call Crypto Lib to generate a random value with eight-octet length.\r | |
29 | \r | |
30 | @return the 64 byte vaule.\r | |
31 | \r | |
32 | **/\r | |
33 | UINT64\r | |
34 | IkeGenerateCookie (\r | |
35 | VOID\r | |
36 | )\r | |
37 | {\r | |
38 | UINT64 Cookie;\r | |
39 | EFI_STATUS Status;\r | |
40 | \r | |
41 | Status = IpSecCryptoIoGenerateRandomBytes ((UINT8 *)&Cookie, sizeof (UINT64));\r | |
42 | if (EFI_ERROR (Status)) {\r | |
43 | return 0;\r | |
44 | } else {\r | |
45 | return Cookie;\r | |
46 | }\r | |
47 | }\r | |
48 | \r | |
49 | /**\r | |
50 | Generate the random data for Nonce payload.\r | |
51 | \r | |
52 | @param[in] NonceSize Size of the data in bytes.\r | |
53 | \r | |
54 | @return Buffer which contains the random data of the spcified size. \r | |
55 | \r | |
56 | **/\r | |
57 | UINT8 *\r | |
58 | IkeGenerateNonce (\r | |
59 | IN UINTN NonceSize\r | |
60 | )\r | |
61 | {\r | |
62 | UINT8 *Nonce;\r | |
63 | EFI_STATUS Status;\r | |
64 | \r | |
65 | Nonce = AllocateZeroPool (NonceSize);\r | |
66 | if (Nonce == NULL) {\r | |
67 | return NULL;\r | |
68 | }\r | |
69 | \r | |
70 | Status = IpSecCryptoIoGenerateRandomBytes (Nonce, NonceSize);\r | |
71 | if (EFI_ERROR (Status)) {\r | |
72 | FreePool (Nonce);\r | |
73 | return NULL;\r | |
74 | } else {\r | |
75 | return Nonce;\r | |
76 | }\r | |
77 | }\r | |
78 | \r | |
79 | /**\r | |
80 | Convert the IKE Header from Network order to Host order.\r | |
81 | \r | |
82 | @param[in, out] Header The pointer of the IKE_HEADER.\r | |
83 | \r | |
84 | **/\r | |
85 | VOID\r | |
86 | IkeHdrNetToHost (\r | |
87 | IN OUT IKE_HEADER *Header\r | |
88 | )\r | |
89 | {\r | |
90 | Header->InitiatorCookie = NTOHLL (Header->InitiatorCookie);\r | |
91 | Header->ResponderCookie = NTOHLL (Header->ResponderCookie);\r | |
92 | Header->MessageId = NTOHL (Header->MessageId);\r | |
93 | Header->Length = NTOHL (Header->Length);\r | |
94 | }\r | |
95 | \r | |
96 | /**\r | |
97 | Convert the IKE Header from Host order to Network order.\r | |
98 | \r | |
99 | @param[in, out] Header The pointer of the IKE_HEADER.\r | |
100 | \r | |
101 | **/\r | |
102 | VOID\r | |
103 | IkeHdrHostToNet (\r | |
104 | IN OUT IKE_HEADER *Header\r | |
105 | )\r | |
106 | {\r | |
107 | Header->InitiatorCookie = HTONLL (Header->InitiatorCookie);\r | |
108 | Header->ResponderCookie = HTONLL (Header->ResponderCookie);\r | |
109 | Header->MessageId = HTONL (Header->MessageId);\r | |
110 | Header->Length = HTONL (Header->Length);\r | |
111 | }\r | |
112 | \r | |
113 | /**\r | |
114 | Allocate a buffer of IKE_PAYLOAD and set its Signature.\r | |
115 | \r | |
116 | @return A buffer of IKE_PAYLOAD.\r | |
117 | \r | |
118 | **/\r | |
119 | IKE_PAYLOAD *\r | |
120 | IkePayloadAlloc (\r | |
121 | VOID\r | |
122 | )\r | |
123 | {\r | |
124 | IKE_PAYLOAD *IkePayload;\r | |
125 | \r | |
126 | IkePayload = (IKE_PAYLOAD *) AllocateZeroPool (sizeof (IKE_PAYLOAD));\r | |
127 | if (IkePayload == NULL) {\r | |
128 | return NULL;\r | |
129 | }\r | |
130 | \r | |
131 | IkePayload->Signature = IKE_PAYLOAD_SIGNATURE;\r | |
132 | \r | |
133 | return IkePayload;\r | |
134 | }\r | |
135 | \r | |
136 | /**\r | |
137 | Free a specified IKE_PAYLOAD buffer.\r | |
138 | \r | |
139 | @param[in] IkePayload Pointer of IKE_PAYLOAD to be freed.\r | |
140 | \r | |
141 | **/\r | |
142 | VOID\r | |
143 | IkePayloadFree (\r | |
144 | IN IKE_PAYLOAD *IkePayload\r | |
145 | )\r | |
146 | {\r | |
147 | if (IkePayload == NULL) {\r | |
148 | return;\r | |
149 | }\r | |
150 | //\r | |
151 | // If this IkePayload is not referred by others, free it.\r | |
152 | //\r | |
153 | if (!IkePayload->IsPayloadBufExt && (IkePayload->PayloadBuf != NULL)) {\r | |
154 | FreePool (IkePayload->PayloadBuf);\r | |
155 | }\r | |
156 | \r | |
157 | FreePool (IkePayload);\r | |
158 | }\r | |
159 | \r | |
160 | /**\r | |
161 | Generate an new SPI.\r | |
162 | \r | |
163 | @return a SPI in 4 bytes.\r | |
164 | \r | |
165 | **/\r | |
166 | UINT32\r | |
167 | IkeGenerateSpi (\r | |
168 | VOID\r | |
169 | )\r | |
170 | {\r | |
171 | //\r | |
172 | // TODO: should generate SPI randomly to avoid security issue\r | |
173 | //\r | |
174 | return mNextSpi++;\r | |
175 | }\r | |
176 | \r | |
177 | /**\r | |
178 | Generate a random data for IV\r | |
179 | \r | |
180 | @param[in] IvBuffer The pointer of the IV buffer.\r | |
181 | @param[in] IvSize The IV size.\r | |
182 | \r | |
183 | @retval EFI_SUCCESS Create a random data for IV.\r | |
184 | @retval otherwise Failed.\r | |
185 | \r | |
186 | **/\r | |
187 | EFI_STATUS\r | |
188 | IkeGenerateIv (\r | |
189 | IN UINT8 *IvBuffer,\r | |
190 | IN UINTN IvSize\r | |
191 | )\r | |
192 | {\r | |
193 | return IpSecCryptoIoGenerateRandomBytes (IvBuffer, IvSize);\r | |
194 | }\r | |
195 | \r | |
196 | \r | |
44de1013 HT |
197 | /**\r |
198 | Find SPD entry by a specified SPD selector.\r | |
199 | \r | |
9166f840 | 200 | @param[in] SpdSel Point to SPD Selector to be searched for.\r |
44de1013 | 201 | \r |
9166f840 | 202 | @retval Point to SPD Entry if the SPD entry found.\r |
44de1013 HT |
203 | @retval NULL if not found.\r |
204 | \r | |
205 | **/\r | |
206 | IPSEC_SPD_ENTRY *\r | |
9166f840 | 207 | IkeSearchSpdEntry (\r |
44de1013 HT |
208 | IN EFI_IPSEC_SPD_SELECTOR *SpdSel\r |
209 | )\r | |
210 | {\r | |
211 | IPSEC_SPD_ENTRY *SpdEntry;\r | |
212 | LIST_ENTRY *SpdList;\r | |
213 | LIST_ENTRY *Entry;\r | |
214 | \r | |
215 | SpdList = &mConfigData[IPsecConfigDataTypeSpd];\r | |
216 | \r | |
217 | NET_LIST_FOR_EACH (Entry, SpdList) {\r | |
218 | SpdEntry = IPSEC_SPD_ENTRY_FROM_LIST (Entry);\r | |
219 | \r | |
220 | //\r | |
9166f840 | 221 | // Find the required SPD entry\r |
44de1013 HT |
222 | //\r |
223 | if (CompareSpdSelector (\r | |
224 | (EFI_IPSEC_CONFIG_SELECTOR *) SpdSel,\r | |
225 | (EFI_IPSEC_CONFIG_SELECTOR *) SpdEntry->Selector\r | |
226 | )) {\r | |
227 | return SpdEntry;\r | |
228 | }\r | |
229 | \r | |
230 | }\r | |
231 | \r | |
232 | return NULL;\r | |
9166f840 | 233 | }\r |
234 | \r | |
235 | /**\r | |
236 | Get the IKE Version from the IKE_SA_SESSION.\r | |
237 | \r | |
238 | @param[in] Session Pointer of the IKE_SA_SESSION.\r | |
239 | \r | |
240 | **/\r | |
241 | UINT8\r | |
242 | IkeGetVersionFromSession (\r | |
243 | IN UINT8 *Session\r | |
244 | )\r | |
245 | {\r | |
246 | if (*(UINT32 *) Session == IKEV2_SA_SESSION_SIGNATURE) {\r | |
247 | return ((IKEV2_SA_SESSION *) Session)->SessionCommon.IkeVer;\r | |
248 | } else {\r | |
249 | //\r | |
250 | // Add IKEv1 support here.\r | |
251 | //\r | |
252 | return 0;\r | |
253 | }\r | |
254 | }\r | |
255 | \r |