1 | /* |
2 | * Copyright (c) 2018 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | |
29 | /* |
30 | * RFC 2408 Internet Security Association and Key Management Protocol |
31 | */ |
32 | |
33 | #ifndef _NETINET_ISAKMP_H_ |
34 | #define _NETINET_ISAKMP_H_ |
35 | |
36 | typedef u_char cookie_t[8]; |
37 | typedef u_char msgid_t[4]; |
38 | |
39 | /* 3.1 ISAKMP Header Format (IKEv1 and IKEv2) |
40 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
41 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
42 | * ! Initiator ! |
43 | * ! Cookie ! |
44 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
45 | * ! Responder ! |
46 | * ! Cookie ! |
47 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
48 | * ! Next Payload ! MjVer ! MnVer ! Exchange Type ! Flags ! |
49 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
50 | * ! Message ID ! |
51 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
52 | * ! Length ! |
53 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
54 | */ |
55 | struct isakmp { |
56 | cookie_t i_ck; /* Initiator Cookie */ |
57 | cookie_t r_ck; /* Responder Cookie */ |
58 | uint8_t np; /* Next Payload Type */ |
59 | uint8_t vers; |
60 | #define ISAKMP_VERS_MAJOR 0xf0 |
61 | #define ISAKMP_VERS_MAJOR_SHIFT 4 |
62 | #define ISAKMP_VERS_MINOR 0x0f |
63 | #define ISAKMP_VERS_MINOR_SHIFT 0 |
64 | uint8_t etype; /* Exchange Type */ |
65 | uint8_t flags; /* Flags */ |
66 | msgid_t msgid; |
67 | uint32_t len; /* Length */ |
68 | }; |
69 | |
70 | /* 3.2 Payload Generic Header |
71 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
72 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
73 | * ! Next Payload ! RESERVED ! Payload Length ! |
74 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
75 | */ |
76 | struct isakmp_gen { |
77 | uint8_t np; /* Next Payload */ |
78 | uint8_t critical; /* bit 7 - critical, rest is RESERVED */ |
79 | uint16_t len; /* Payload Length */ |
80 | }; |
81 | |
82 | #endif /* _NETINET_ISAKMP_H_ */ |
83 | |