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1 | /** @file\r | |
2 | The operations for Child SA.\r | |
3 | \r | |
4 | Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>\r | |
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 | \r | |
18 | /**\r | |
19 | Generate IKE Packet for CREATE_CHILD_SA exchange. \r | |
20 | \r | |
21 | This IKE Packet would be the packet for creating new CHILD SA, or the packet for\r | |
22 | rekeying existing IKE SA, or the packet for existing CHILD SA.\r | |
23 | \r | |
24 | @param[in] SaSession Pointer to related SA session. \r | |
25 | @param[in] Context The data passed by the caller.\r | |
26 | \r | |
27 | return a pointer of IKE packet.\r | |
28 | \r | |
29 | **/\r | |
30 | IKE_PACKET *\r | |
31 | Ikev2CreateChildGenerator (\r | |
32 | IN UINT8 *SaSession,\r | |
33 | IN VOID *Context\r | |
34 | )\r | |
35 | {\r | |
36 | \r | |
37 | IKEV2_CHILD_SA_SESSION *ChildSaSession;\r | |
38 | IKEV2_SA_SESSION *IkeSaSession;\r | |
39 | IKE_PACKET *IkePacket;\r | |
40 | IKE_PAYLOAD *NotifyPayload;\r | |
41 | UINT32 *MessageId;\r | |
42 | \r | |
43 | ChildSaSession = (IKEV2_CHILD_SA_SESSION *) SaSession;\r | |
44 | IkePacket = IkePacketAlloc();\r | |
45 | MessageId = NULL;\r | |
46 | \r | |
47 | if (IkePacket == NULL) {\r | |
48 | return NULL;\r | |
49 | }\r | |
50 | if (ChildSaSession == NULL) {\r | |
51 | return NULL;\r | |
52 | }\r | |
53 | \r | |
54 | if (Context != NULL) {\r | |
55 | MessageId = (UINT32 *) Context;\r | |
56 | }\r | |
57 | \r | |
58 | IkePacket->Header->Version = (UINT8) (2 << 4);\r | |
59 | IkePacket->Header->NextPayload = IKEV2_PAYLOAD_TYPE_NOTIFY;\r | |
60 | IkePacket->Header->ExchangeType = IKE_XCG_TYPE_CREATE_CHILD_SA;\r | |
61 | \r | |
62 | if (ChildSaSession->SessionCommon.IkeSessionType == IkeSessionTypeChildSa) {\r | |
63 | //\r | |
64 | // 1.a Fill the IkePacket->Hdr\r | |
65 | // \r | |
66 | IkePacket->Header->InitiatorCookie = ChildSaSession->IkeSaSession->InitiatorCookie;\r | |
67 | IkePacket->Header->ResponderCookie = ChildSaSession->IkeSaSession->ResponderCookie;\r | |
68 | \r | |
69 | if (MessageId != NULL) {\r | |
70 | IkePacket->Header->MessageId = *MessageId;\r | |
71 | } else {\r | |
72 | IkePacket->Header->MessageId = ChildSaSession->MessageId;\r | |
73 | } \r | |
74 | \r | |
75 | if (ChildSaSession->SessionCommon.IsInitiator) {\r | |
76 | IkePacket->Header->Flags = IKE_HEADER_FLAGS_CHILD_INIT;\r | |
77 | } else {\r | |
78 | IkePacket->Header->Flags = IKE_HEADER_FLAGS_RESPOND;\r | |
79 | }\r | |
80 | \r | |
81 | } else {\r | |
82 | IkeSaSession = (IKEV2_SA_SESSION *) SaSession;\r | |
83 | //\r | |
84 | // 1.a Fill the IkePacket->Hdr\r | |
85 | //\r | |
86 | IkePacket->Header->InitiatorCookie = IkeSaSession->InitiatorCookie;\r | |
87 | IkePacket->Header->ResponderCookie = IkeSaSession->ResponderCookie;\r | |
88 | \r | |
89 | if (MessageId != NULL) {\r | |
90 | IkePacket->Header->MessageId = *MessageId;\r | |
91 | } else {\r | |
92 | IkePacket->Header->MessageId = IkeSaSession->MessageId;\r | |
93 | } \r | |
94 | \r | |
95 | if (IkeSaSession->SessionCommon.IsInitiator) {\r | |
96 | IkePacket->Header->Flags = IKE_HEADER_FLAGS_CHILD_INIT;\r | |
97 | } else {\r | |
98 | IkePacket->Header->Flags = IKE_HEADER_FLAGS_RESPOND;\r | |
99 | }\r | |
100 | } \r | |
101 | \r | |
102 | //\r | |
103 | // According to RFC4306, Chapter 4.\r | |
104 | // A minimal implementation may support the CREATE_CHILD_SA exchange only to\r | |
105 | // recognize requests and reject them with a Notify payload of type NO_ADDITIONAL_SAS.\r | |
106 | //\r | |
107 | NotifyPayload = Ikev2GenerateNotifyPayload (\r | |
108 | 0,\r | |
109 | IKEV2_PAYLOAD_TYPE_NONE,\r | |
110 | 0, \r | |
111 | IKEV2_NOTIFICATION_NO_ADDITIONAL_SAS,\r | |
112 | NULL,\r | |
113 | NULL,\r | |
114 | 0\r | |
115 | );\r | |
116 | \r | |
117 | IKE_PACKET_APPEND_PAYLOAD (IkePacket, NotifyPayload);\r | |
118 | //\r | |
119 | // TODO: Support the CREATE_CHILD_SA exchange. \r | |
120 | // \r | |
121 | return IkePacket;\r | |
122 | }\r | |
123 | \r | |
124 | /**\r | |
125 | Parse the IKE packet of CREATE_CHILD_SA exchange.\r | |
126 | \r | |
127 | This function parse the IKE packet and save the related information to further\r | |
128 | calculation. \r | |
129 | \r | |
130 | @param[in] SaSession Pointer to IKEv2_CHILD_SA_SESSION related to this Exchange.\r | |
131 | @param[in] IkePacket Received packet to be parsed.\r | |
132 | \r | |
133 | \r | |
134 | @retval EFI_SUCCESS The IKE Packet is acceptable.\r | |
135 | @retval EFI_UNSUPPORTED Not support the CREATE_CHILD_SA request.\r | |
136 | \r | |
137 | **/\r | |
138 | EFI_STATUS\r | |
139 | Ikev2CreateChildParser (\r | |
140 | IN UINT8 *SaSession,\r | |
141 | IN IKE_PACKET *IkePacket\r | |
142 | )\r | |
143 | {\r | |
144 | return EFI_UNSUPPORTED;\r | |
145 | }\r | |
146 | \r | |
147 | /**\r | |
148 | Routine process before the payload decoding.\r | |
149 | \r | |
150 | @param[in] SessionCommon Pointer to ChildSa SessionCommon.\r | |
151 | @param[in] PayloadBuf Pointer to the payload.\r | |
152 | @param[in] PayloadSize Size of PayloadBuf in byte.\r | |
153 | @param[in] PayloadType Type of Payload.\r | |
154 | \r | |
155 | **/\r | |
156 | VOID\r | |
157 | Ikev2ChildSaBeforeDecodePayload (\r | |
158 | IN UINT8 *SessionCommon,\r | |
159 | IN UINT8 *PayloadBuf,\r | |
160 | IN UINTN PayloadSize,\r | |
161 | IN UINT8 PayloadType\r | |
162 | )\r | |
163 | {\r | |
164 | \r | |
165 | }\r | |
166 | \r | |
167 | /**\r | |
168 | Routine Process after the payload encoding.\r | |
169 | \r | |
170 | @param[in] SessionCommon Pointer to ChildSa SessionCommon.\r | |
171 | @param[in] PayloadBuf Pointer to the payload.\r | |
172 | @param[in] PayloadSize Size of PayloadBuf in byte.\r | |
173 | @param[in] PayloadType Type of Payload.\r | |
174 | \r | |
175 | **/\r | |
176 | VOID\r | |
177 | Ikev2ChildSaAfterEncodePayload (\r | |
178 | IN UINT8 *SessionCommon,\r | |
179 | IN UINT8 *PayloadBuf,\r | |
180 | IN UINTN PayloadSize,\r | |
181 | IN UINT8 PayloadType\r | |
182 | )\r | |
183 | {\r | |
184 | }\r | |
185 | \r | |
186 | IKEV2_PACKET_HANDLER mIkev2CreateChild = {\r | |
187 | //\r | |
188 | // Create Child\r | |
189 | //\r | |
190 | Ikev2CreateChildParser,\r | |
191 | Ikev2CreateChildGenerator\r | |
192 | };\r |