mirror of
https://github.com/the-tcpdump-group/tcpdump.git
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5fa8fc69b2
when optimization is not on, glibc6 doesn't define ntohs(), and our attempt to optimize it for x86 doesn't work --- the functions need to be static, not extern. added decryption of IKE v2 payloads, when keys are provided by -E.
502 lines
16 KiB
C
502 lines
16 KiB
C
/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* YIPS @(#)$Id: isakmp.h,v 1.12 2007-11-24 18:13:33 mcr Exp $ */
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/* refer to RFC 2408 */
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/* must include <netinet/in.h> */
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#if !defined(_ISAKMP_H_)
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#define _ISAKMP_H_
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typedef u_char cookie_t[8];
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typedef u_char msgid_t[4];
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typedef struct { /* i_cookie + r_cookie */
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cookie_t i_ck;
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cookie_t r_ck;
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} isakmp_index;
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#define INITIATOR 1
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#define RESPONDER 2
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#define PORT_ISAKMP 500
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#define GENERATE 1
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#define VALIDATE 0
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/* Phase of oakley definition */
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/*
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0000 0000 0000 0000
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| |||| ++++--> negosiation number in phase
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| ++++-------> phase number
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+---------------> expire ?
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*/
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#define ISAKMP_PH1 0x0010
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#define ISAKMP_PH2 0x0020
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#define ISAKMP_EXPIRED 0x0100
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#define ISAKMP_NGP_0 0x0000
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#define ISAKMP_NGP_1 0x0001
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#define ISAKMP_NGP_2 0x0002
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#define ISAKMP_NGP_3 0x0003
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#define ISAKMP_NGP_4 0x0004
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#define ISAKMP_PH1_N (ISAKMP_PH1 | ISAKMP_NGP_0) /* i.e. spawn */
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#define ISAKMP_PH1_1 (ISAKMP_PH1 | ISAKMP_NGP_1)
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#define ISAKMP_PH1_2 (ISAKMP_PH1 | ISAKMP_NGP_2)
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#define ISAKMP_PH1_3 (ISAKMP_PH1 | ISAKMP_NGP_3)
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#define ISAKMP_PH2_N (ISAKMP_PH2 | ISAKMP_NGP_0)
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#define ISAKMP_PH2_1 (ISAKMP_PH2 | ISAKMP_NGP_1)
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#define ISAKMP_PH2_2 (ISAKMP_PH2 | ISAKMP_NGP_2)
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#define ISAKMP_PH2_3 (ISAKMP_PH2 | ISAKMP_NGP_3)
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#define ISAKMP_TIMER_DEFAULT 10 /* seconds */
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#define ISAKMP_TRY_DEFAULT 3 /* times */
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/* 3.1 ISAKMP Header Format (IKEv1 and IKEv2)
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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
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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! Initiator !
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! Cookie !
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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! Responder !
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! Cookie !
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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! Next Payload ! MjVer ! MnVer ! Exchange Type ! Flags !
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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! Message ID !
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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! Length !
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct isakmp {
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cookie_t i_ck; /* Initiator Cookie */
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cookie_t r_ck; /* Responder Cookie */
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u_int8_t np; /* Next Payload Type */
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u_int8_t vers;
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#define ISAKMP_VERS_MAJOR 0xf0
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#define ISAKMP_VERS_MAJOR_SHIFT 4
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#define ISAKMP_VERS_MINOR 0x0f
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#define ISAKMP_VERS_MINOR_SHIFT 0
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u_int8_t etype; /* Exchange Type */
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u_int8_t flags; /* Flags */
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msgid_t msgid;
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u_int32_t len; /* Length */
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};
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/* Next Payload Type */
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#define ISAKMP_NPTYPE_NONE 0 /* NONE*/
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#define ISAKMP_NPTYPE_SA 1 /* Security Association */
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#define ISAKMP_NPTYPE_P 2 /* Proposal */
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#define ISAKMP_NPTYPE_T 3 /* Transform */
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#define ISAKMP_NPTYPE_KE 4 /* Key Exchange */
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#define ISAKMP_NPTYPE_ID 5 /* Identification */
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#define ISAKMP_NPTYPE_CERT 6 /* Certificate */
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#define ISAKMP_NPTYPE_CR 7 /* Certificate Request */
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#define ISAKMP_NPTYPE_HASH 8 /* Hash */
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#define ISAKMP_NPTYPE_SIG 9 /* Signature */
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#define ISAKMP_NPTYPE_NONCE 10 /* Nonce */
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#define ISAKMP_NPTYPE_N 11 /* Notification */
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#define ISAKMP_NPTYPE_D 12 /* Delete */
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#define ISAKMP_NPTYPE_VID 13 /* Vendor ID */
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#define ISAKMP_NPTYPE_v2E 46 /* v2 Encrypted payload */
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#define IKEv1_MAJOR_VERSION 1
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#define IKEv1_MINOR_VERSION 0
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#define IKEv2_MAJOR_VERSION 2
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#define IKEv2_MINOR_VERSION 0
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/* Exchange Type */
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#define ISAKMP_ETYPE_NONE 0 /* NONE */
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#define ISAKMP_ETYPE_BASE 1 /* Base */
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#define ISAKMP_ETYPE_IDENT 2 /* Identity Proteciton */
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#define ISAKMP_ETYPE_AUTH 3 /* Authentication Only */
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#define ISAKMP_ETYPE_AGG 4 /* Aggressive */
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#define ISAKMP_ETYPE_INF 5 /* Informational */
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/* Flags */
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#define ISAKMP_FLAG_E 0x01 /* Encryption Bit */
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#define ISAKMP_FLAG_C 0x02 /* Commit Bit */
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#define ISAKMP_FLAG_extra 0x04
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/* IKEv2 */
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#define ISAKMP_FLAG_I (1 << 3) /* (I)nitiator */
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#define ISAKMP_FLAG_V (1 << 4) /* (V)ersion */
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#define ISAKMP_FLAG_R (1 << 5) /* (R)esponse */
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/* 3.2 Payload Generic Header
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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
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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! Next Payload ! RESERVED ! Payload Length !
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct isakmp_gen {
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u_int8_t np; /* Next Payload */
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u_int8_t critical; /* bit 7 - critical, rest is RESERVED */
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u_int16_t len; /* Payload Length */
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};
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/* 3.3 Data Attributes
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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
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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!A! Attribute Type ! AF=0 Attribute Length !
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!F! ! AF=1 Attribute Value !
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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. AF=0 Attribute Value .
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. AF=1 Not Transmitted .
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct isakmp_data {
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u_int16_t type; /* defined by DOI-spec, and Attribute Format */
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u_int16_t lorv; /* if f equal 1, Attribute Length */
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/* if f equal 0, Attribute Value */
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/* if f equal 1, Attribute Value */
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};
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#define ISAKMP_GEN_TLV 0x0000
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#define ISAKMP_GEN_TV 0x8000
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/* mask for type of attribute format */
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#define ISAKMP_GEN_MASK 0x8000
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/* 3.4 Security Association Payload */
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/* MAY NOT be used, because of being defined in ipsec-doi. */
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/*
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If the current payload is the last in the message,
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then the value of the next payload field will be 0.
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This field MUST NOT contain the
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values for the Proposal or Transform payloads as they are considered
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part of the security association negotiation. For example, this
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field would contain the value "10" (Nonce payload) in the first
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message of a Base Exchange (see Section 4.4) and the value "0" in the
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first message of an Identity Protect Exchange (see Section 4.5).
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*/
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struct ikev1_pl_sa {
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struct isakmp_gen h;
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u_int32_t doi; /* Domain of Interpretation */
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u_int32_t sit; /* Situation */
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};
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/* 3.5 Proposal Payload */
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/*
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The value of the next payload field MUST only contain the value "2"
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or "0". If there are additional Proposal payloads in the message,
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then this field will be 2. If the current Proposal payload is the
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last within the security association proposal, then this field will
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be 0.
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*/
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struct ikev1_pl_p {
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struct isakmp_gen h;
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u_int8_t p_no; /* Proposal # */
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u_int8_t prot_id; /* Protocol */
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u_int8_t spi_size; /* SPI Size */
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u_int8_t num_t; /* Number of Transforms */
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/* SPI */
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};
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/* 3.6 Transform Payload */
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/*
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The value of the next payload field MUST only contain the value "3"
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or "0". If there are additional Transform payloads in the proposal,
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then this field will be 3. If the current Transform payload is the
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last within the proposal, then this field will be 0.
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*/
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struct ikev1_pl_t {
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struct isakmp_gen h;
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u_int8_t t_no; /* Transform # */
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u_int8_t t_id; /* Transform-Id */
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u_int16_t reserved; /* RESERVED2 */
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/* SA Attributes */
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};
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/* 3.7 Key Exchange Payload */
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struct ikev1_pl_ke {
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struct isakmp_gen h;
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/* Key Exchange Data */
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};
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/* 3.8 Identification Payload */
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/* MUST NOT to be used, because of being defined in ipsec-doi. */
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struct ikev1_pl_id {
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struct isakmp_gen h;
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union {
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u_int8_t id_type; /* ID Type */
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u_int32_t doi_data; /* DOI Specific ID Data */
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} d;
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/* Identification Data */
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};
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/* 3.9 Certificate Payload */
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struct ikev1_pl_cert {
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struct isakmp_gen h;
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u_int8_t encode; /* Cert Encoding */
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char cert; /* Certificate Data */
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/*
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This field indicates the type of
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certificate or certificate-related information contained in the
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Certificate Data field.
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*/
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};
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/* Certificate Type */
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#define ISAKMP_CERT_NONE 0
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#define ISAKMP_CERT_PKCS 1
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#define ISAKMP_CERT_PGP 2
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#define ISAKMP_CERT_DNS 3
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#define ISAKMP_CERT_SIGN 4
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#define ISAKMP_CERT_KE 5
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#define ISAKMP_CERT_KT 6
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#define ISAKMP_CERT_CRL 7
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#define ISAKMP_CERT_ARL 8
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#define ISAKMP_CERT_SPKI 9
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/* 3.10 Certificate Request Payload */
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struct ikev1_pl_cr {
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struct isakmp_gen h;
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u_int8_t num_cert; /* # Cert. Types */
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/*
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Certificate Types (variable length)
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-- Contains a list of the types of certificates requested,
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sorted in order of preference. Each individual certificate
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type is 1 octet. This field is NOT requiredo
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*/
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/* # Certificate Authorities (1 octet) */
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/* Certificate Authorities (variable length) */
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};
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/* 3.11 Hash Payload */
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/* may not be used, because of having only data. */
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struct ikev1_pl_hash {
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struct isakmp_gen h;
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/* Hash Data */
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};
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/* 3.12 Signature Payload */
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/* may not be used, because of having only data. */
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struct ikev1_pl_sig {
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struct isakmp_gen h;
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/* Signature Data */
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};
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/* 3.13 Nonce Payload */
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/* may not be used, because of having only data. */
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struct ikev1_pl_nonce {
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struct isakmp_gen h;
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/* Nonce Data */
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};
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/* 3.14 Notification Payload */
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struct ikev1_pl_n {
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struct isakmp_gen h;
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u_int32_t doi; /* Domain of Interpretation */
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u_int8_t prot_id; /* Protocol-ID */
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u_int8_t spi_size; /* SPI Size */
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u_int16_t type; /* Notify Message Type */
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/* SPI */
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/* Notification Data */
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};
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/* 3.14.1 Notify Message Types */
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/* NOTIFY MESSAGES - ERROR TYPES */
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#define ISAKMP_NTYPE_INVALID_PAYLOAD_TYPE 1
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#define ISAKMP_NTYPE_DOI_NOT_SUPPORTED 2
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#define ISAKMP_NTYPE_SITUATION_NOT_SUPPORTED 3
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#define ISAKMP_NTYPE_INVALID_COOKIE 4
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#define ISAKMP_NTYPE_INVALID_MAJOR_VERSION 5
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#define ISAKMP_NTYPE_INVALID_MINOR_VERSION 6
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#define ISAKMP_NTYPE_INVALID_EXCHANGE_TYPE 7
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#define ISAKMP_NTYPE_INVALID_FLAGS 8
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#define ISAKMP_NTYPE_INVALID_MESSAGE_ID 9
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#define ISAKMP_NTYPE_INVALID_PROTOCOL_ID 10
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#define ISAKMP_NTYPE_INVALID_SPI 11
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#define ISAKMP_NTYPE_INVALID_TRANSFORM_ID 12
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#define ISAKMP_NTYPE_ATTRIBUTES_NOT_SUPPORTED 13
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#define ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN 14
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#define ISAKMP_NTYPE_BAD_PROPOSAL_SYNTAX 15
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#define ISAKMP_NTYPE_PAYLOAD_MALFORMED 16
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#define ISAKMP_NTYPE_INVALID_KEY_INFORMATION 17
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#define ISAKMP_NTYPE_INVALID_ID_INFORMATION 18
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#define ISAKMP_NTYPE_INVALID_CERT_ENCODING 19
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#define ISAKMP_NTYPE_INVALID_CERTIFICATE 20
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#define ISAKMP_NTYPE_BAD_CERT_REQUEST_SYNTAX 21
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#define ISAKMP_NTYPE_INVALID_CERT_AUTHORITY 22
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#define ISAKMP_NTYPE_INVALID_HASH_INFORMATION 23
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#define ISAKMP_NTYPE_AUTHENTICATION_FAILED 24
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#define ISAKMP_NTYPE_INVALID_SIGNATURE 25
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#define ISAKMP_NTYPE_ADDRESS_NOTIFICATION 26
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/* NOTIFY MESSAGES - STATUS TYPES */
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#define ISAKMP_NTYPE_CONNECTED 16384
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/* using only to log */
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#define ISAKMP_LOG_RETRY_LIMIT_REACHED 65530
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/* 3.15 Delete Payload */
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struct ikev1_pl_d {
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struct isakmp_gen h;
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u_int32_t doi; /* Domain of Interpretation */
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u_int8_t prot_id; /* Protocol-Id */
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u_int8_t spi_size; /* SPI Size */
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u_int16_t num_spi; /* # of SPIs */
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/* SPI(es) */
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};
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struct ikev1_ph1tab {
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struct ikev1_ph1 *head;
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struct ikev1_ph1 *tail;
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int len;
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};
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struct isakmp_ph2tab {
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struct ikev1_ph2 *head;
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struct ikev1_ph2 *tail;
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int len;
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};
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#define EXCHANGE_PROXY 1
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#define EXCHANGE_MYSELF 0
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#define PFS_NEED 1
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#define PFS_NONEED 0
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/* IKEv2 (RFC4306) */
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/* 3.3 Security Association Payload -- generic header */
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/* 3.3.1. Proposal Substructure */
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struct ikev2_p {
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struct isakmp_gen h;
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u_int8_t p_no; /* Proposal # */
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u_int8_t prot_id; /* Protocol */
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u_int8_t spi_size; /* SPI Size */
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u_int8_t num_t; /* Number of Transforms */
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};
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/* 3.3.2. Transform Substructure */
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struct ikev2_t {
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struct isakmp_gen h;
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u_int8_t t_type; /* Transform Type (ENCR,PRF,INTEG,etc.*/
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u_int8_t res2; /* reserved byte */
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u_int16_t t_id; /* Transform ID */
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};
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enum ikev2_t_type {
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IV2_T_ENCR = 1,
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IV2_T_PRF = 2,
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IV2_T_INTEG= 3,
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IV2_T_DH = 4,
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IV2_T_ESN = 5,
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};
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/* 3.4. Key Exchange Payload */
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struct ikev2_ke {
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struct isakmp_gen h;
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u_int16_t ke_group;
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u_int16_t ke_res1;
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/* KE data */
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};
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/* 3.5. Identification Payloads */
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enum ikev2_id_type {
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ID_IPV4_ADDR=1,
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ID_FQDN=2,
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ID_RFC822_ADDR=3,
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ID_IPV6_ADDR=5,
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ID_DER_ASN1_DN=9,
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ID_DER_ASN1_GN=10,
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ID_KEY_ID=11,
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};
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struct ikev2_id {
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struct isakmp_gen h;
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u_int8_t type; /* ID type */
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u_int8_t res1;
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u_int16_t res2;
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/* SPI */
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/* Notification Data */
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};
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/* 3.10 Notification Payload */
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struct ikev2_n {
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struct isakmp_gen h;
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u_int8_t prot_id; /* Protocol-ID */
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u_int8_t spi_size; /* SPI Size */
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u_int16_t type; /* Notify Message Type */
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};
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enum ikev2_n_type {
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IV2_NOTIFY_UNSUPPORTED_CRITICAL_PAYLOAD = 1,
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IV2_NOTIFY_INVALID_IKE_SPI = 4,
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IV2_NOTIFY_INVALID_MAJOR_VERSION = 5,
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IV2_NOTIFY_INVALID_SYNTAX = 7,
|
||
IV2_NOTIFY_INVALID_MESSAGE_ID = 9,
|
||
IV2_NOTIFY_INVALID_SPI =11,
|
||
IV2_NOTIFY_NO_PROPOSAL_CHOSEN =14,
|
||
IV2_NOTIFY_INVALID_KE_PAYLOAD =17,
|
||
IV2_NOTIFY_AUTHENTICATION_FAILED =24,
|
||
IV2_NOTIFY_SINGLE_PAIR_REQUIRED =34,
|
||
IV2_NOTIFY_NO_ADDITIONAL_SAS =35,
|
||
IV2_NOTIFY_INTERNAL_ADDRESS_FAILURE =36,
|
||
IV2_NOTIFY_FAILED_CP_REQUIRED =37,
|
||
IV2_NOTIFY_INVALID_SELECTORS =39,
|
||
IV2_NOTIFY_INITIAL_CONTACT =16384,
|
||
IV2_NOTIFY_SET_WINDOW_SIZE =16385,
|
||
IV2_NOTIFY_ADDITIONAL_TS_POSSIBLE =16386,
|
||
IV2_NOTIFY_IPCOMP_SUPPORTED =16387,
|
||
IV2_NOTIFY_NAT_DETECTION_SOURCE_IP =16388,
|
||
IV2_NOTIFY_NAT_DETECTION_DESTINATION_IP =16389,
|
||
IV2_NOTIFY_COOKIE =16390,
|
||
IV2_NOTIFY_USE_TRANSPORT_MODE =16391,
|
||
IV2_NOTIFY_HTTP_CERT_LOOKUP_SUPPORTED =16392,
|
||
IV2_NOTIFY_REKEY_SA =16393,
|
||
IV2_NOTIFY_ESP_TFC_PADDING_NOT_SUPPORTED =16394,
|
||
IV2_NOTIFY_NON_FIRST_FRAGMENTS_ALSO =16395
|
||
};
|
||
|
||
struct notify_messages {
|
||
u_int16_t type;
|
||
char *msg;
|
||
};
|
||
|
||
/* 3.8 Notification Payload */
|
||
struct ikev2_auth {
|
||
struct isakmp_gen h;
|
||
u_int8_t auth_method; /* Protocol-ID */
|
||
u_int8_t reserved[3];
|
||
/* authentication data */
|
||
};
|
||
|
||
enum ikev2_auth_type {
|
||
IV2_RSA_SIG = 1,
|
||
IV2_SHARED = 2,
|
||
IV2_DSS_SIG = 3,
|
||
};
|
||
|
||
#endif /* !defined(_ISAKMP_H_) */
|