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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 17:13:01 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 17:13:01 +0000
commit7adcb5b605cc1328a3084c334f4697ec9771936c (patch)
tree03e681bfda053978ba896745828e09cb056ad156 /print-isakmp.c
parentInitial commit. (diff)
downloadtcpdump-7adcb5b605cc1328a3084c334f4697ec9771936c.tar.xz
tcpdump-7adcb5b605cc1328a3084c334f4697ec9771936c.zip
Adding upstream version 4.99.4.upstream/4.99.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'print-isakmp.c')
-rw-r--r--print-isakmp.c3141
1 files changed, 3141 insertions, 0 deletions
diff --git a/print-isakmp.c b/print-isakmp.c
new file mode 100644
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+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+/* \summary: Internet Security Association and Key Management Protocol (ISAKMP) printer */
+
+/* specification: RFC 2407, RFC 2408, RFC 5996 */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+/* The functions from print-esp.c used in this file are only defined when both
+ * OpenSSL and evp.h are detected. Employ the same preprocessor device here.
+ */
+#ifndef HAVE_OPENSSL_EVP_H
+#undef HAVE_LIBCRYPTO
+#endif
+
+#include "netdissect-stdinc.h"
+
+#include <string.h>
+
+#include "netdissect-ctype.h"
+
+#include "netdissect.h"
+#include "addrtoname.h"
+#include "extract.h"
+
+#include "ip.h"
+#include "ip6.h"
+#include "ipproto.h"
+
+typedef nd_byte cookie_t[8];
+typedef nd_byte msgid_t[4];
+
+#define PORT_ISAKMP 500
+
+/* 3.1 ISAKMP Header Format (IKEv1 and IKEv2)
+ 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
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! Initiator !
+ ! Cookie !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! Responder !
+ ! Cookie !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! Next Payload ! MjVer ! MnVer ! Exchange Type ! Flags !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! Message ID !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! Length !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+*/
+struct isakmp {
+ cookie_t i_ck; /* Initiator Cookie */
+ cookie_t r_ck; /* Responder Cookie */
+ nd_uint8_t np; /* Next Payload Type */
+ nd_uint8_t vers;
+#define ISAKMP_VERS_MAJOR 0xf0
+#define ISAKMP_VERS_MAJOR_SHIFT 4
+#define ISAKMP_VERS_MINOR 0x0f
+#define ISAKMP_VERS_MINOR_SHIFT 0
+ nd_uint8_t etype; /* Exchange Type */
+ nd_uint8_t flags; /* Flags */
+ msgid_t msgid;
+ nd_uint32_t len; /* Length */
+};
+
+/* Next Payload Type */
+#define ISAKMP_NPTYPE_NONE 0 /* NONE*/
+#define ISAKMP_NPTYPE_SA 1 /* Security Association */
+#define ISAKMP_NPTYPE_P 2 /* Proposal */
+#define ISAKMP_NPTYPE_T 3 /* Transform */
+#define ISAKMP_NPTYPE_KE 4 /* Key Exchange */
+#define ISAKMP_NPTYPE_ID 5 /* Identification */
+#define ISAKMP_NPTYPE_CERT 6 /* Certificate */
+#define ISAKMP_NPTYPE_CR 7 /* Certificate Request */
+#define ISAKMP_NPTYPE_HASH 8 /* Hash */
+#define ISAKMP_NPTYPE_SIG 9 /* Signature */
+#define ISAKMP_NPTYPE_NONCE 10 /* Nonce */
+#define ISAKMP_NPTYPE_N 11 /* Notification */
+#define ISAKMP_NPTYPE_D 12 /* Delete */
+#define ISAKMP_NPTYPE_VID 13 /* Vendor ID */
+#define ISAKMP_NPTYPE_v2E 46 /* v2 Encrypted payload */
+
+#define IKEv1_MAJOR_VERSION 1
+#define IKEv1_MINOR_VERSION 0
+
+#define IKEv2_MAJOR_VERSION 2
+#define IKEv2_MINOR_VERSION 0
+
+/* Flags */
+#define ISAKMP_FLAG_E 0x01 /* Encryption Bit */
+#define ISAKMP_FLAG_C 0x02 /* Commit Bit */
+#define ISAKMP_FLAG_extra 0x04
+
+/* IKEv2 */
+#define ISAKMP_FLAG_I (1 << 3) /* (I)nitiator */
+#define ISAKMP_FLAG_V (1 << 4) /* (V)ersion */
+#define ISAKMP_FLAG_R (1 << 5) /* (R)esponse */
+
+
+/* 3.2 Payload Generic Header
+ 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
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! Next Payload ! RESERVED ! Payload Length !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+*/
+struct isakmp_gen {
+ nd_uint8_t np; /* Next Payload */
+ nd_uint8_t critical; /* bit 7 - critical, rest is RESERVED */
+ nd_uint16_t len; /* Payload Length */
+};
+
+/* 3.3 Data Attributes
+ 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
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ !A! Attribute Type ! AF=0 Attribute Length !
+ !F! ! AF=1 Attribute Value !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ . AF=0 Attribute Value .
+ . AF=1 Not Transmitted .
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+*/
+struct isakmp_data {
+ nd_uint16_t type; /* defined by DOI-spec, and Attribute Format */
+ nd_uint16_t lorv; /* if f equal 1, Attribute Length */
+ /* if f equal 0, Attribute Value */
+ /* if f equal 1, Attribute Value */
+};
+
+/* 3.4 Security Association Payload */
+ /* MAY NOT be used, because of being defined in ipsec-doi. */
+ /*
+ If the current payload is the last in the message,
+ then the value of the next payload field will be 0.
+ This field MUST NOT contain the
+ values for the Proposal or Transform payloads as they are considered
+ part of the security association negotiation. For example, this
+ field would contain the value "10" (Nonce payload) in the first
+ message of a Base Exchange (see Section 4.4) and the value "0" in the
+ first message of an Identity Protect Exchange (see Section 4.5).
+ */
+struct ikev1_pl_sa {
+ struct isakmp_gen h;
+ nd_uint32_t doi; /* Domain of Interpretation */
+ nd_uint32_t sit; /* Situation */
+};
+
+/* 3.5 Proposal Payload */
+ /*
+ The value of the next payload field MUST only contain the value "2"
+ or "0". If there are additional Proposal payloads in the message,
+ then this field will be 2. If the current Proposal payload is the
+ last within the security association proposal, then this field will
+ be 0.
+ */
+struct ikev1_pl_p {
+ struct isakmp_gen h;
+ nd_uint8_t p_no; /* Proposal # */
+ nd_uint8_t prot_id; /* Protocol */
+ nd_uint8_t spi_size; /* SPI Size */
+ nd_uint8_t num_t; /* Number of Transforms */
+ /* SPI */
+};
+
+/* 3.6 Transform Payload */
+ /*
+ The value of the next payload field MUST only contain the value "3"
+ or "0". If there are additional Transform payloads in the proposal,
+ then this field will be 3. If the current Transform payload is the
+ last within the proposal, then this field will be 0.
+ */
+struct ikev1_pl_t {
+ struct isakmp_gen h;
+ nd_uint8_t t_no; /* Transform # */
+ nd_uint8_t t_id; /* Transform-Id */
+ nd_byte reserved[2]; /* RESERVED2 */
+ /* SA Attributes */
+};
+
+/* 3.7 Key Exchange Payload */
+struct ikev1_pl_ke {
+ struct isakmp_gen h;
+ /* Key Exchange Data */
+};
+
+/* 3.8 Identification Payload */
+ /* MUST NOT to be used, because of being defined in ipsec-doi. */
+struct ikev1_pl_id {
+ struct isakmp_gen h;
+ union {
+ nd_uint8_t id_type; /* ID Type */
+ nd_uint32_t doi_data; /* DOI Specific ID Data */
+ } d;
+ /* Identification Data */
+};
+
+/* 3.9 Certificate Payload */
+struct ikev1_pl_cert {
+ struct isakmp_gen h;
+ nd_uint8_t encode; /* Cert Encoding */
+ nd_uint8_t cert; /* Certificate Data */
+ /*
+ This field indicates the type of
+ certificate or certificate-related information contained in the
+ Certificate Data field.
+ */
+};
+
+/* 3.10 Certificate Request Payload */
+struct ikev1_pl_cr {
+ struct isakmp_gen h;
+ nd_uint8_t num_cert; /* # Cert. Types */
+ /*
+ Certificate Types (variable length)
+ -- Contains a list of the types of certificates requested,
+ sorted in order of preference. Each individual certificate
+ type is 1 octet. This field is NOT requiredo
+ */
+ /* # Certificate Authorities (1 octet) */
+ /* Certificate Authorities (variable length) */
+};
+
+/* 3.11 Hash Payload */
+ /* may not be used, because of having only data. */
+struct ikev1_pl_hash {
+ struct isakmp_gen h;
+ /* Hash Data */
+};
+
+/* 3.12 Signature Payload */
+ /* may not be used, because of having only data. */
+struct ikev1_pl_sig {
+ struct isakmp_gen h;
+ /* Signature Data */
+};
+
+/* 3.13 Nonce Payload */
+ /* may not be used, because of having only data. */
+struct ikev1_pl_nonce {
+ struct isakmp_gen h;
+ /* Nonce Data */
+};
+
+/* 3.14 Notification Payload */
+struct ikev1_pl_n {
+ struct isakmp_gen h;
+ nd_uint32_t doi; /* Domain of Interpretation */
+ nd_uint8_t prot_id; /* Protocol-ID */
+ nd_uint8_t spi_size; /* SPI Size */
+ nd_uint16_t type; /* Notify Message Type */
+ /* SPI */
+ /* Notification Data */
+};
+
+/* 3.14.1 Notify Message Types */
+/* NOTIFY MESSAGES - ERROR TYPES */
+#define ISAKMP_NTYPE_INVALID_PAYLOAD_TYPE 1
+#define ISAKMP_NTYPE_DOI_NOT_SUPPORTED 2
+#define ISAKMP_NTYPE_SITUATION_NOT_SUPPORTED 3
+#define ISAKMP_NTYPE_INVALID_COOKIE 4
+#define ISAKMP_NTYPE_INVALID_MAJOR_VERSION 5
+#define ISAKMP_NTYPE_INVALID_MINOR_VERSION 6
+#define ISAKMP_NTYPE_INVALID_EXCHANGE_TYPE 7
+#define ISAKMP_NTYPE_INVALID_FLAGS 8
+#define ISAKMP_NTYPE_INVALID_MESSAGE_ID 9
+#define ISAKMP_NTYPE_INVALID_PROTOCOL_ID 10
+#define ISAKMP_NTYPE_INVALID_SPI 11
+#define ISAKMP_NTYPE_INVALID_TRANSFORM_ID 12
+#define ISAKMP_NTYPE_ATTRIBUTES_NOT_SUPPORTED 13
+#define ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN 14
+#define ISAKMP_NTYPE_BAD_PROPOSAL_SYNTAX 15
+#define ISAKMP_NTYPE_PAYLOAD_MALFORMED 16
+#define ISAKMP_NTYPE_INVALID_KEY_INFORMATION 17
+#define ISAKMP_NTYPE_INVALID_ID_INFORMATION 18
+#define ISAKMP_NTYPE_INVALID_CERT_ENCODING 19
+#define ISAKMP_NTYPE_INVALID_CERTIFICATE 20
+#define ISAKMP_NTYPE_BAD_CERT_REQUEST_SYNTAX 21
+#define ISAKMP_NTYPE_INVALID_CERT_AUTHORITY 22
+#define ISAKMP_NTYPE_INVALID_HASH_INFORMATION 23
+#define ISAKMP_NTYPE_AUTHENTICATION_FAILED 24
+#define ISAKMP_NTYPE_INVALID_SIGNATURE 25
+#define ISAKMP_NTYPE_ADDRESS_NOTIFICATION 26
+
+/* 3.15 Delete Payload */
+struct ikev1_pl_d {
+ struct isakmp_gen h;
+ nd_uint32_t doi; /* Domain of Interpretation */
+ nd_uint8_t prot_id; /* Protocol-Id */
+ nd_uint8_t spi_size; /* SPI Size */
+ nd_uint16_t num_spi; /* # of SPIs */
+ /* SPI(es) */
+};
+
+/* IKEv2 (RFC4306) */
+
+/* 3.3 Security Association Payload -- generic header */
+/* 3.3.1. Proposal Substructure */
+struct ikev2_p {
+ struct isakmp_gen h;
+ nd_uint8_t p_no; /* Proposal # */
+ nd_uint8_t prot_id; /* Protocol */
+ nd_uint8_t spi_size; /* SPI Size */
+ nd_uint8_t num_t; /* Number of Transforms */
+};
+
+/* 3.3.2. Transform Substructure */
+struct ikev2_t {
+ struct isakmp_gen h;
+ nd_uint8_t t_type; /* Transform Type (ENCR,PRF,INTEG,etc.*/
+ nd_byte res2; /* reserved byte */
+ nd_uint16_t t_id; /* Transform ID */
+};
+
+enum ikev2_t_type {
+ IV2_T_ENCR = 1,
+ IV2_T_PRF = 2,
+ IV2_T_INTEG= 3,
+ IV2_T_DH = 4,
+ IV2_T_ESN = 5
+};
+
+/* 3.4. Key Exchange Payload */
+struct ikev2_ke {
+ struct isakmp_gen h;
+ nd_uint16_t ke_group;
+ nd_uint16_t ke_res1;
+ /* KE data */
+};
+
+
+/* 3.5. Identification Payloads */
+enum ikev2_id_type {
+ ID_IPV4_ADDR=1,
+ ID_FQDN=2,
+ ID_RFC822_ADDR=3,
+ ID_IPV6_ADDR=5,
+ ID_DER_ASN1_DN=9,
+ ID_DER_ASN1_GN=10,
+ ID_KEY_ID=11
+};
+struct ikev2_id {
+ struct isakmp_gen h;
+ nd_uint8_t type; /* ID type */
+ nd_byte res1;
+ nd_byte res2[2];
+ /* SPI */
+ /* Notification Data */
+};
+
+/* 3.10 Notification Payload */
+struct ikev2_n {
+ struct isakmp_gen h;
+ nd_uint8_t prot_id; /* Protocol-ID */
+ nd_uint8_t spi_size; /* SPI Size */
+ nd_uint16_t type; /* Notify Message Type */
+};
+
+enum ikev2_n_type {
+ IV2_NOTIFY_UNSUPPORTED_CRITICAL_PAYLOAD = 1,
+ IV2_NOTIFY_INVALID_IKE_SPI = 4,
+ IV2_NOTIFY_INVALID_MAJOR_VERSION = 5,
+ 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 {
+ uint16_t type;
+ char *msg;
+};
+
+/* 3.8 Authentication Payload */
+struct ikev2_auth {
+ struct isakmp_gen h;
+ nd_uint8_t auth_method; /* Protocol-ID */
+ nd_byte reserved[3];
+ /* authentication data */
+};
+
+enum ikev2_auth_type {
+ IV2_RSA_SIG = 1,
+ IV2_SHARED = 2,
+ IV2_DSS_SIG = 3
+};
+
+/* refer to RFC 2409 */
+
+#if 0
+/* isakmp sa structure */
+struct oakley_sa {
+ uint8_t proto_id; /* OAKLEY */
+ vchar_t *spi; /* spi */
+ uint8_t dhgrp; /* DH; group */
+ uint8_t auth_t; /* method of authentication */
+ uint8_t prf_t; /* type of prf */
+ uint8_t hash_t; /* type of hash */
+ uint8_t enc_t; /* type of cipher */
+ uint8_t life_t; /* type of duration of lifetime */
+ uint32_t ldur; /* life duration */
+};
+#endif
+
+/* refer to RFC 2407 */
+
+#define IPSEC_DOI 1
+
+/* 4.2 IPSEC Situation Definition */
+#define IPSECDOI_SIT_IDENTITY_ONLY 0x00000001
+#define IPSECDOI_SIT_SECRECY 0x00000002
+#define IPSECDOI_SIT_INTEGRITY 0x00000004
+
+/* 4.4.1 IPSEC Security Protocol Identifiers */
+ /* 4.4.2 IPSEC ISAKMP Transform Values */
+#define IPSECDOI_PROTO_ISAKMP 1
+#define IPSECDOI_KEY_IKE 1
+
+/* 4.4.1 IPSEC Security Protocol Identifiers */
+#define IPSECDOI_PROTO_IPSEC_AH 2
+ /* 4.4.3 IPSEC AH Transform Values */
+#define IPSECDOI_AH_MD5 2
+#define IPSECDOI_AH_SHA 3
+#define IPSECDOI_AH_DES 4
+#define IPSECDOI_AH_SHA2_256 5
+#define IPSECDOI_AH_SHA2_384 6
+#define IPSECDOI_AH_SHA2_512 7
+
+/* 4.4.1 IPSEC Security Protocol Identifiers */
+#define IPSECDOI_PROTO_IPSEC_ESP 3
+ /* 4.4.4 IPSEC ESP Transform Identifiers */
+#define IPSECDOI_ESP_DES_IV64 1
+#define IPSECDOI_ESP_DES 2
+#define IPSECDOI_ESP_3DES 3
+#define IPSECDOI_ESP_RC5 4
+#define IPSECDOI_ESP_IDEA 5
+#define IPSECDOI_ESP_CAST 6
+#define IPSECDOI_ESP_BLOWFISH 7
+#define IPSECDOI_ESP_3IDEA 8
+#define IPSECDOI_ESP_DES_IV32 9
+#define IPSECDOI_ESP_RC4 10
+#define IPSECDOI_ESP_NULL 11
+#define IPSECDOI_ESP_RIJNDAEL 12
+#define IPSECDOI_ESP_AES 12
+
+/* 4.4.1 IPSEC Security Protocol Identifiers */
+#define IPSECDOI_PROTO_IPCOMP 4
+ /* 4.4.5 IPSEC IPCOMP Transform Identifiers */
+#define IPSECDOI_IPCOMP_OUI 1
+#define IPSECDOI_IPCOMP_DEFLATE 2
+#define IPSECDOI_IPCOMP_LZS 3
+
+/* 4.5 IPSEC Security Association Attributes */
+#define IPSECDOI_ATTR_SA_LTYPE 1 /* B */
+#define IPSECDOI_ATTR_SA_LTYPE_DEFAULT 1
+#define IPSECDOI_ATTR_SA_LTYPE_SEC 1
+#define IPSECDOI_ATTR_SA_LTYPE_KB 2
+#define IPSECDOI_ATTR_SA_LDUR 2 /* V */
+#define IPSECDOI_ATTR_SA_LDUR_DEFAULT 28800 /* 8 hours */
+#define IPSECDOI_ATTR_GRP_DESC 3 /* B */
+#define IPSECDOI_ATTR_ENC_MODE 4 /* B */
+ /* default value: host dependent */
+#define IPSECDOI_ATTR_ENC_MODE_TUNNEL 1
+#define IPSECDOI_ATTR_ENC_MODE_TRNS 2
+#define IPSECDOI_ATTR_AUTH 5 /* B */
+ /* 0 means not to use authentication. */
+#define IPSECDOI_ATTR_AUTH_HMAC_MD5 1
+#define IPSECDOI_ATTR_AUTH_HMAC_SHA1 2
+#define IPSECDOI_ATTR_AUTH_DES_MAC 3
+#define IPSECDOI_ATTR_AUTH_KPDK 4 /*RFC-1826(Key/Pad/Data/Key)*/
+ /*
+ * When negotiating ESP without authentication, the Auth
+ * Algorithm attribute MUST NOT be included in the proposal.
+ * When negotiating ESP without confidentiality, the Auth
+ * Algorithm attribute MUST be included in the proposal and
+ * the ESP transform ID must be ESP_NULL.
+ */
+#define IPSECDOI_ATTR_KEY_LENGTH 6 /* B */
+#define IPSECDOI_ATTR_KEY_ROUNDS 7 /* B */
+#define IPSECDOI_ATTR_COMP_DICT_SIZE 8 /* B */
+#define IPSECDOI_ATTR_COMP_PRIVALG 9 /* V */
+
+/* 4.6.1 Security Association Payload */
+struct ipsecdoi_sa {
+ struct isakmp_gen h;
+ nd_uint32_t doi; /* Domain of Interpretation */
+ nd_uint32_t sit; /* Situation */
+};
+
+struct ipsecdoi_secrecy_h {
+ nd_uint16_t len;
+ nd_uint16_t reserved;
+};
+
+/* 4.6.2.1 Identification Type Values */
+struct ipsecdoi_id {
+ struct isakmp_gen h;
+ nd_uint8_t type; /* ID Type */
+ nd_uint8_t proto_id; /* Protocol ID */
+ nd_uint16_t port; /* Port */
+ /* Identification Data */
+};
+
+#define IPSECDOI_ID_IPV4_ADDR 1
+#define IPSECDOI_ID_FQDN 2
+#define IPSECDOI_ID_USER_FQDN 3
+#define IPSECDOI_ID_IPV4_ADDR_SUBNET 4
+#define IPSECDOI_ID_IPV6_ADDR 5
+#define IPSECDOI_ID_IPV6_ADDR_SUBNET 6
+#define IPSECDOI_ID_IPV4_ADDR_RANGE 7
+#define IPSECDOI_ID_IPV6_ADDR_RANGE 8
+#define IPSECDOI_ID_DER_ASN1_DN 9
+#define IPSECDOI_ID_DER_ASN1_GN 10
+#define IPSECDOI_ID_KEY_ID 11
+
+/* 4.6.3 IPSEC DOI Notify Message Types */
+/* Notify Messages - Status Types */
+#define IPSECDOI_NTYPE_RESPONDER_LIFETIME 24576
+#define IPSECDOI_NTYPE_REPLAY_STATUS 24577
+#define IPSECDOI_NTYPE_INITIAL_CONTACT 24578
+
+#define DECLARE_PRINTER(func) static const u_char *ike##func##_print( \
+ netdissect_options *ndo, u_char tpay, \
+ const struct isakmp_gen *ext, \
+ u_int item_len, \
+ const u_char *end_pointer, \
+ uint32_t phase,\
+ uint32_t doi0, \
+ uint32_t proto0, int depth)
+
+DECLARE_PRINTER(v1_sa);
+DECLARE_PRINTER(v1_p);
+DECLARE_PRINTER(v1_t);
+DECLARE_PRINTER(v1_ke);
+DECLARE_PRINTER(v1_id);
+DECLARE_PRINTER(v1_cert);
+DECLARE_PRINTER(v1_cr);
+DECLARE_PRINTER(v1_sig);
+DECLARE_PRINTER(v1_hash);
+DECLARE_PRINTER(v1_nonce);
+DECLARE_PRINTER(v1_n);
+DECLARE_PRINTER(v1_d);
+DECLARE_PRINTER(v1_vid);
+
+DECLARE_PRINTER(v2_sa);
+DECLARE_PRINTER(v2_ke);
+DECLARE_PRINTER(v2_ID);
+DECLARE_PRINTER(v2_cert);
+DECLARE_PRINTER(v2_cr);
+DECLARE_PRINTER(v2_auth);
+DECLARE_PRINTER(v2_nonce);
+DECLARE_PRINTER(v2_n);
+DECLARE_PRINTER(v2_d);
+DECLARE_PRINTER(v2_vid);
+DECLARE_PRINTER(v2_TS);
+DECLARE_PRINTER(v2_cp);
+DECLARE_PRINTER(v2_eap);
+
+static const u_char *ikev2_e_print(netdissect_options *ndo,
+ const struct isakmp *base,
+ u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len,
+ const u_char *end_pointer,
+ uint32_t phase,
+ uint32_t doi0,
+ uint32_t proto0, int depth);
+
+
+static const u_char *ike_sub0_print(netdissect_options *ndo,u_char, const struct isakmp_gen *,
+ const u_char *, uint32_t, uint32_t, uint32_t, int);
+static const u_char *ikev1_sub_print(netdissect_options *ndo,u_char, const struct isakmp_gen *,
+ const u_char *, uint32_t, uint32_t, uint32_t, int);
+
+static const u_char *ikev2_sub_print(netdissect_options *ndo,
+ const struct isakmp *base,
+ u_char np, const struct isakmp_gen *ext,
+ const u_char *ep, uint32_t phase,
+ uint32_t doi, uint32_t proto,
+ int depth);
+
+
+static char *numstr(u_int);
+
+static void
+ikev1_print(netdissect_options *ndo,
+ const u_char *bp, u_int length,
+ const u_char *bp2, const struct isakmp *base);
+
+#define MAXINITIATORS 20
+static int ninitiator = 0;
+union inaddr_u {
+ nd_ipv4 in4;
+ nd_ipv6 in6;
+};
+static struct {
+ cookie_t initiator;
+ u_int version;
+ union inaddr_u iaddr;
+ union inaddr_u raddr;
+} cookiecache[MAXINITIATORS];
+
+/* protocol id */
+static const char *protoidstr[] = {
+ NULL, "isakmp", "ipsec-ah", "ipsec-esp", "ipcomp",
+};
+
+/* isakmp->np */
+static const char *npstr[] = {
+ "none", "sa", "p", "t", "ke", "id", "cert", "cr", "hash", /* 0 - 8 */
+ "sig", "nonce", "n", "d", "vid", /* 9 - 13 */
+ "pay14", "pay15", "pay16", "pay17", "pay18", /* 14- 18 */
+ "pay19", "pay20", "pay21", "pay22", "pay23", /* 19- 23 */
+ "pay24", "pay25", "pay26", "pay27", "pay28", /* 24- 28 */
+ "pay29", "pay30", "pay31", "pay32", /* 29- 32 */
+ "v2sa", "v2ke", "v2IDi", "v2IDr", "v2cert",/* 33- 37 */
+ "v2cr", "v2auth","v2nonce", "v2n", "v2d", /* 38- 42 */
+ "v2vid", "v2TSi", "v2TSr", "v2e", "v2cp", /* 43- 47 */
+ "v2eap", /* 48 */
+
+};
+
+/* isakmp->np */
+static const u_char *(*npfunc[])(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len,
+ const u_char *end_pointer,
+ uint32_t phase,
+ uint32_t doi0,
+ uint32_t proto0, int depth) = {
+ NULL,
+ ikev1_sa_print,
+ ikev1_p_print,
+ ikev1_t_print,
+ ikev1_ke_print,
+ ikev1_id_print,
+ ikev1_cert_print,
+ ikev1_cr_print,
+ ikev1_hash_print,
+ ikev1_sig_print,
+ ikev1_nonce_print,
+ ikev1_n_print,
+ ikev1_d_print,
+ ikev1_vid_print, /* 13 */
+ NULL, NULL, NULL, NULL, NULL, /* 14- 18 */
+ NULL, NULL, NULL, NULL, NULL, /* 19- 23 */
+ NULL, NULL, NULL, NULL, NULL, /* 24- 28 */
+ NULL, NULL, NULL, NULL, /* 29- 32 */
+ ikev2_sa_print, /* 33 */
+ ikev2_ke_print, /* 34 */
+ ikev2_ID_print, /* 35 */
+ ikev2_ID_print, /* 36 */
+ ikev2_cert_print, /* 37 */
+ ikev2_cr_print, /* 38 */
+ ikev2_auth_print, /* 39 */
+ ikev2_nonce_print, /* 40 */
+ ikev2_n_print, /* 41 */
+ ikev2_d_print, /* 42 */
+ ikev2_vid_print, /* 43 */
+ ikev2_TS_print, /* 44 */
+ ikev2_TS_print, /* 45 */
+ NULL, /* ikev2_e_print,*/ /* 46 - special */
+ ikev2_cp_print, /* 47 */
+ ikev2_eap_print, /* 48 */
+};
+
+/* isakmp->etype */
+static const char *etypestr[] = {
+/* IKEv1 exchange types */
+ "none", "base", "ident", "auth", "agg", "inf", NULL, NULL, /* 0-7 */
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 8-15 */
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 16-23 */
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 24-31 */
+ "oakley-quick", "oakley-newgroup", /* 32-33 */
+/* IKEv2 exchange types */
+ "ikev2_init", "ikev2_auth", "child_sa", "inf2" /* 34-37 */
+};
+
+#define STR_OR_ID(x, tab) \
+ (((x) < sizeof(tab)/sizeof(tab[0]) && tab[(x)]) ? tab[(x)] : numstr(x))
+#define PROTOIDSTR(x) STR_OR_ID(x, protoidstr)
+#define NPSTR(x) STR_OR_ID(x, npstr)
+#define ETYPESTR(x) STR_OR_ID(x, etypestr)
+
+#define CHECKLEN(p, np) \
+ if (ep < (const u_char *)(p)) { \
+ ND_PRINT(" [|%s]", NPSTR(np)); \
+ goto done; \
+ }
+
+
+#define NPFUNC(x) \
+ (((x) < sizeof(npfunc)/sizeof(npfunc[0]) && npfunc[(x)]) \
+ ? npfunc[(x)] : NULL)
+
+static int
+iszero(netdissect_options *ndo, const u_char *p, size_t l)
+{
+ while (l != 0) {
+ if (GET_U_1(p))
+ return 0;
+ p++;
+ l--;
+ }
+ return 1;
+}
+
+/* find cookie from initiator cache */
+static int
+cookie_find(const cookie_t *in)
+{
+ int i;
+
+ for (i = 0; i < MAXINITIATORS; i++) {
+ if (memcmp(in, &cookiecache[i].initiator, sizeof(*in)) == 0)
+ return i;
+ }
+
+ return -1;
+}
+
+/* record initiator */
+static void
+cookie_record(netdissect_options *ndo, const cookie_t *in, const u_char *bp2)
+{
+ int i;
+ const struct ip *ip;
+ const struct ip6_hdr *ip6;
+
+ i = cookie_find(in);
+ if (0 <= i) {
+ ninitiator = (i + 1) % MAXINITIATORS;
+ return;
+ }
+
+ ip = (const struct ip *)bp2;
+ switch (IP_V(ip)) {
+ case 4:
+ cookiecache[ninitiator].version = 4;
+ UNALIGNED_MEMCPY(&cookiecache[ninitiator].iaddr.in4,
+ ip->ip_src, sizeof(nd_ipv4));
+ UNALIGNED_MEMCPY(&cookiecache[ninitiator].raddr.in4,
+ ip->ip_dst, sizeof(nd_ipv4));
+ break;
+ case 6:
+ ip6 = (const struct ip6_hdr *)bp2;
+ cookiecache[ninitiator].version = 6;
+ UNALIGNED_MEMCPY(&cookiecache[ninitiator].iaddr.in6,
+ ip6->ip6_src, sizeof(nd_ipv6));
+ UNALIGNED_MEMCPY(&cookiecache[ninitiator].raddr.in6,
+ ip6->ip6_dst, sizeof(nd_ipv6));
+ break;
+ default:
+ return;
+ }
+ UNALIGNED_MEMCPY(&cookiecache[ninitiator].initiator, in, sizeof(*in));
+ ninitiator = (ninitiator + 1) % MAXINITIATORS;
+}
+
+#define cookie_isinitiator(ndo, x, y) cookie_sidecheck(ndo, (x), (y), 1)
+#define cookie_isresponder(ndo, x, y) cookie_sidecheck(ndo, (x), (y), 0)
+static int
+cookie_sidecheck(netdissect_options *ndo, int i, const u_char *bp2, int initiator)
+{
+ const struct ip *ip;
+ const struct ip6_hdr *ip6;
+
+ ip = (const struct ip *)bp2;
+ switch (IP_V(ip)) {
+ case 4:
+ if (cookiecache[i].version != 4)
+ return 0;
+ if (initiator) {
+ if (UNALIGNED_MEMCMP(ip->ip_src, &cookiecache[i].iaddr.in4, sizeof(nd_ipv4)) == 0)
+ return 1;
+ } else {
+ if (UNALIGNED_MEMCMP(ip->ip_src, &cookiecache[i].raddr.in4, sizeof(nd_ipv4)) == 0)
+ return 1;
+ }
+ break;
+ case 6:
+ if (cookiecache[i].version != 6)
+ return 0;
+ ip6 = (const struct ip6_hdr *)bp2;
+ if (initiator) {
+ if (UNALIGNED_MEMCMP(ip6->ip6_src, &cookiecache[i].iaddr.in6, sizeof(nd_ipv6)) == 0)
+ return 1;
+ } else {
+ if (UNALIGNED_MEMCMP(ip6->ip6_src, &cookiecache[i].raddr.in6, sizeof(nd_ipv6)) == 0)
+ return 1;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static void
+hexprint(netdissect_options *ndo, const uint8_t *loc, size_t len)
+{
+ const uint8_t *p;
+ size_t i;
+
+ p = loc;
+ for (i = 0; i < len; i++)
+ ND_PRINT("%02x", p[i] & 0xff);
+}
+
+static int
+rawprint(netdissect_options *ndo, const uint8_t *loc, size_t len)
+{
+ ND_TCHECK_LEN(loc, len);
+
+ hexprint(ndo, loc, len);
+ return 1;
+trunc:
+ return 0;
+}
+
+
+/*
+ * returns false if we run out of data buffer
+ */
+static int ike_show_somedata(netdissect_options *ndo,
+ const u_char *cp, const u_char *ep)
+{
+ /* there is too much data, just show some of it */
+ const u_char *end = ep - 20;
+ size_t elen = 20;
+ size_t len = ep - cp;
+ if(len > 10) {
+ len = 10;
+ }
+
+ /* really shouldn't happen because of above */
+ if(end < cp + len) {
+ end = cp+len;
+ elen = ep - end;
+ }
+
+ ND_PRINT(" data=(");
+ if(!rawprint(ndo, (const uint8_t *)(cp), len)) goto trunc;
+ ND_PRINT("...");
+ if(elen) {
+ if(!rawprint(ndo, (const uint8_t *)(end), elen)) goto trunc;
+ }
+ ND_PRINT(")");
+ return 1;
+
+trunc:
+ return 0;
+}
+
+struct attrmap {
+ const char *type;
+ u_int nvalue;
+ const char *value[30]; /*XXX*/
+};
+
+static const u_char *
+ikev1_attrmap_print(netdissect_options *ndo,
+ const u_char *p, const u_char *ep2,
+ const struct attrmap *map, size_t nmap)
+{
+ u_int totlen;
+ uint32_t t, v;
+
+ if (GET_U_1(p) & 0x80)
+ totlen = 4;
+ else {
+ totlen = 4 + GET_BE_U_2(p + 2);
+ }
+ if (ep2 < p + totlen) {
+ ND_PRINT("[|attr]");
+ return ep2 + 1;
+ }
+
+ ND_PRINT("(");
+ t = GET_BE_U_2(p) & 0x7fff;
+ if (map && t < nmap && map[t].type)
+ ND_PRINT("type=%s ", map[t].type);
+ else
+ ND_PRINT("type=#%u ", t);
+ if (GET_U_1(p) & 0x80) {
+ ND_PRINT("value=");
+ v = GET_BE_U_2(p + 2);
+ if (map && t < nmap && v < map[t].nvalue && map[t].value[v])
+ ND_PRINT("%s", map[t].value[v]);
+ else {
+ if (!rawprint(ndo, (const uint8_t *)(p + 2), 2)) {
+ ND_PRINT(")");
+ goto trunc;
+ }
+ }
+ } else {
+ ND_PRINT("len=%u value=", totlen - 4);
+ if (!rawprint(ndo, (const uint8_t *)(p + 4), totlen - 4)) {
+ ND_PRINT(")");
+ goto trunc;
+ }
+ }
+ ND_PRINT(")");
+ return p + totlen;
+
+trunc:
+ return NULL;
+}
+
+static const u_char *
+ikev1_attr_print(netdissect_options *ndo, const u_char *p, const u_char *ep2)
+{
+ u_int totlen;
+ uint32_t t;
+
+ if (GET_U_1(p) & 0x80)
+ totlen = 4;
+ else {
+ totlen = 4 + GET_BE_U_2(p + 2);
+ }
+ if (ep2 < p + totlen) {
+ ND_PRINT("[|attr]");
+ return ep2 + 1;
+ }
+
+ ND_PRINT("(");
+ t = GET_BE_U_2(p) & 0x7fff;
+ ND_PRINT("type=#%u ", t);
+ if (GET_U_1(p) & 0x80) {
+ ND_PRINT("value=");
+ t = GET_U_1(p + 2);
+ if (!rawprint(ndo, (const uint8_t *)(p + 2), 2)) {
+ ND_PRINT(")");
+ goto trunc;
+ }
+ } else {
+ ND_PRINT("len=%u value=", totlen - 4);
+ if (!rawprint(ndo, (const uint8_t *)(p + 4), totlen - 4)) {
+ ND_PRINT(")");
+ goto trunc;
+ }
+ }
+ ND_PRINT(")");
+ return p + totlen;
+
+trunc:
+ return NULL;
+}
+
+static const u_char *
+ikev1_sa_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext,
+ u_int item_len _U_,
+ const u_char *ep, uint32_t phase, uint32_t doi0 _U_,
+ uint32_t proto0, int depth)
+{
+ const struct ikev1_pl_sa *p;
+ uint32_t doi, sit, ident;
+ const u_char *cp, *np;
+ int t;
+
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_SA));
+
+ p = (const struct ikev1_pl_sa *)ext;
+ ND_TCHECK_SIZE(p);
+ doi = GET_BE_U_4(p->doi);
+ sit = GET_BE_U_4(p->sit);
+ if (doi != 1) {
+ ND_PRINT(" doi=%u", doi);
+ ND_PRINT(" situation=%u", sit);
+ return (const u_char *)(p + 1);
+ }
+
+ ND_PRINT(" doi=ipsec");
+ ND_PRINT(" situation=");
+ t = 0;
+ if (sit & 0x01) {
+ ND_PRINT("identity");
+ t++;
+ }
+ if (sit & 0x02) {
+ ND_PRINT("%ssecrecy", t ? "+" : "");
+ t++;
+ }
+ if (sit & 0x04)
+ ND_PRINT("%sintegrity", t ? "+" : "");
+
+ np = (const u_char *)ext + sizeof(struct ikev1_pl_sa);
+ if (sit != 0x01) {
+ ident = GET_BE_U_4(ext + 1);
+ ND_PRINT(" ident=%u", ident);
+ np += sizeof(ident);
+ }
+
+ ext = (const struct isakmp_gen *)np;
+ ND_TCHECK_SIZE(ext);
+
+ cp = ikev1_sub_print(ndo, ISAKMP_NPTYPE_P, ext, ep, phase, doi, proto0,
+ depth);
+
+ return cp;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_SA));
+ return NULL;
+}
+
+static const u_char *
+ikev1_p_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext, u_int item_len _U_,
+ const u_char *ep, uint32_t phase, uint32_t doi0,
+ uint32_t proto0 _U_, int depth)
+{
+ const struct ikev1_pl_p *p;
+ const u_char *cp;
+ uint8_t spi_size;
+
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_P));
+
+ p = (const struct ikev1_pl_p *)ext;
+ ND_TCHECK_SIZE(p);
+ ND_PRINT(" #%u protoid=%s transform=%u",
+ GET_U_1(p->p_no), PROTOIDSTR(GET_U_1(p->prot_id)),
+ GET_U_1(p->num_t));
+ spi_size = GET_U_1(p->spi_size);
+ if (spi_size) {
+ ND_PRINT(" spi=");
+ if (!rawprint(ndo, (const uint8_t *)(p + 1), spi_size))
+ goto trunc;
+ }
+
+ ext = (const struct isakmp_gen *)((const u_char *)(p + 1) + spi_size);
+ ND_TCHECK_SIZE(ext);
+
+ cp = ikev1_sub_print(ndo, ISAKMP_NPTYPE_T, ext, ep, phase, doi0,
+ GET_U_1(p->prot_id), depth);
+
+ return cp;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_P));
+ return NULL;
+}
+
+static const char *ikev1_p_map[] = {
+ NULL, "ike",
+};
+
+static const char *ikev2_t_type_map[]={
+ NULL, "encr", "prf", "integ", "dh", "esn"
+};
+
+static const char *ah_p_map[] = {
+ NULL, "(reserved)", "md5", "sha", "1des",
+ "sha2-256", "sha2-384", "sha2-512",
+};
+
+static const char *prf_p_map[] = {
+ NULL, "hmac-md5", "hmac-sha", "hmac-tiger",
+ "aes128_xcbc"
+};
+
+static const char *integ_p_map[] = {
+ NULL, "hmac-md5", "hmac-sha", "dec-mac",
+ "kpdk-md5", "aes-xcbc"
+};
+
+static const char *esn_p_map[] = {
+ "no-esn", "esn"
+};
+
+static const char *dh_p_map[] = {
+ NULL, "modp768",
+ "modp1024", /* group 2 */
+ "EC2N 2^155", /* group 3 */
+ "EC2N 2^185", /* group 4 */
+ "modp1536", /* group 5 */
+ "iana-grp06", "iana-grp07", /* reserved */
+ "iana-grp08", "iana-grp09",
+ "iana-grp10", "iana-grp11",
+ "iana-grp12", "iana-grp13",
+ "modp2048", /* group 14 */
+ "modp3072", /* group 15 */
+ "modp4096", /* group 16 */
+ "modp6144", /* group 17 */
+ "modp8192", /* group 18 */
+};
+
+static const char *esp_p_map[] = {
+ NULL, "1des-iv64", "1des", "3des", "rc5", "idea", "cast",
+ "blowfish", "3idea", "1des-iv32", "rc4", "null", "aes"
+};
+
+static const char *ipcomp_p_map[] = {
+ NULL, "oui", "deflate", "lzs",
+};
+
+static const struct attrmap ipsec_t_map[] = {
+ { NULL, 0, { NULL } },
+ { "lifetype", 3, { NULL, "sec", "kb", }, },
+ { "life", 0, { NULL } },
+ { "group desc", 18, { NULL, "modp768",
+ "modp1024", /* group 2 */
+ "EC2N 2^155", /* group 3 */
+ "EC2N 2^185", /* group 4 */
+ "modp1536", /* group 5 */
+ "iana-grp06", "iana-grp07", /* reserved */
+ "iana-grp08", "iana-grp09",
+ "iana-grp10", "iana-grp11",
+ "iana-grp12", "iana-grp13",
+ "modp2048", /* group 14 */
+ "modp3072", /* group 15 */
+ "modp4096", /* group 16 */
+ "modp6144", /* group 17 */
+ "modp8192", /* group 18 */
+ }, },
+ { "enc mode", 3, { NULL, "tunnel", "transport", }, },
+ { "auth", 5, { NULL, "hmac-md5", "hmac-sha1", "1des-mac", "keyed", }, },
+ { "keylen", 0, { NULL } },
+ { "rounds", 0, { NULL } },
+ { "dictsize", 0, { NULL } },
+ { "privalg", 0, { NULL } },
+};
+
+static const struct attrmap encr_t_map[] = {
+ { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 0, 1 */
+ { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 2, 3 */
+ { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 4, 5 */
+ { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 6, 7 */
+ { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 8, 9 */
+ { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 10,11*/
+ { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 12,13*/
+ { "keylen", 14, { NULL }},
+};
+
+static const struct attrmap oakley_t_map[] = {
+ { NULL, 0, { NULL } },
+ { "enc", 8, { NULL, "1des", "idea", "blowfish", "rc5",
+ "3des", "cast", "aes", }, },
+ { "hash", 7, { NULL, "md5", "sha1", "tiger",
+ "sha2-256", "sha2-384", "sha2-512", }, },
+ { "auth", 6, { NULL, "preshared", "dss", "rsa sig", "rsa enc",
+ "rsa enc revised", }, },
+ { "group desc", 18, { NULL, "modp768",
+ "modp1024", /* group 2 */
+ "EC2N 2^155", /* group 3 */
+ "EC2N 2^185", /* group 4 */
+ "modp1536", /* group 5 */
+ "iana-grp06", "iana-grp07", /* reserved */
+ "iana-grp08", "iana-grp09",
+ "iana-grp10", "iana-grp11",
+ "iana-grp12", "iana-grp13",
+ "modp2048", /* group 14 */
+ "modp3072", /* group 15 */
+ "modp4096", /* group 16 */
+ "modp6144", /* group 17 */
+ "modp8192", /* group 18 */
+ }, },
+ { "group type", 4, { NULL, "MODP", "ECP", "EC2N", }, },
+ { "group prime", 0, { NULL } },
+ { "group gen1", 0, { NULL } },
+ { "group gen2", 0, { NULL } },
+ { "group curve A", 0, { NULL } },
+ { "group curve B", 0, { NULL } },
+ { "lifetype", 3, { NULL, "sec", "kb", }, },
+ { "lifeduration", 0, { NULL } },
+ { "prf", 0, { NULL } },
+ { "keylen", 0, { NULL } },
+ { "field", 0, { NULL } },
+ { "order", 0, { NULL } },
+};
+
+static const u_char *
+ikev1_t_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext, u_int item_len,
+ const u_char *ep, uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto, int depth _U_)
+{
+ const struct ikev1_pl_t *p;
+ const u_char *cp;
+ const char *idstr;
+ const struct attrmap *map;
+ size_t nmap;
+ const u_char *ep2;
+
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_T));
+
+ p = (const struct ikev1_pl_t *)ext;
+ ND_TCHECK_SIZE(p);
+
+ switch (proto) {
+ case 1:
+ idstr = STR_OR_ID(GET_U_1(p->t_id), ikev1_p_map);
+ map = oakley_t_map;
+ nmap = sizeof(oakley_t_map)/sizeof(oakley_t_map[0]);
+ break;
+ case 2:
+ idstr = STR_OR_ID(GET_U_1(p->t_id), ah_p_map);
+ map = ipsec_t_map;
+ nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
+ break;
+ case 3:
+ idstr = STR_OR_ID(GET_U_1(p->t_id), esp_p_map);
+ map = ipsec_t_map;
+ nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
+ break;
+ case 4:
+ idstr = STR_OR_ID(GET_U_1(p->t_id), ipcomp_p_map);
+ map = ipsec_t_map;
+ nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
+ break;
+ default:
+ idstr = NULL;
+ map = NULL;
+ nmap = 0;
+ break;
+ }
+
+ if (idstr)
+ ND_PRINT(" #%u id=%s ", GET_U_1(p->t_no), idstr);
+ else
+ ND_PRINT(" #%u id=%u ", GET_U_1(p->t_no), GET_U_1(p->t_id));
+ cp = (const u_char *)(p + 1);
+ ep2 = (const u_char *)p + item_len;
+ while (cp < ep && cp < ep2) {
+ if (map && nmap)
+ cp = ikev1_attrmap_print(ndo, cp, ep2, map, nmap);
+ else
+ cp = ikev1_attr_print(ndo, cp, ep2);
+ if (cp == NULL)
+ goto trunc;
+ }
+ if (ep < ep2)
+ ND_PRINT("...");
+ return cp;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_T));
+ return NULL;
+}
+
+static const u_char *
+ikev1_ke_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext, u_int item_len,
+ const u_char *ep _U_, uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_KE));
+
+ ND_TCHECK_SIZE(ext);
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" key len=%u", item_len - 4);
+ if (2 < ndo->ndo_vflag && item_len > 4) {
+ /* Print the entire payload in hex */
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), item_len - 4))
+ goto trunc;
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_KE));
+ return NULL;
+}
+
+static const u_char *
+ikev1_id_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext, u_int item_len,
+ const u_char *ep _U_, uint32_t phase, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+#define USE_IPSECDOI_IN_PHASE1 1
+ const struct ikev1_pl_id *p;
+ static const char *idtypestr[] = {
+ "IPv4", "IPv4net", "IPv6", "IPv6net",
+ };
+ static const char *ipsecidtypestr[] = {
+ NULL, "IPv4", "FQDN", "user FQDN", "IPv4net", "IPv6",
+ "IPv6net", "IPv4range", "IPv6range", "ASN1 DN", "ASN1 GN",
+ "keyid",
+ };
+ u_int len;
+ const u_char *data;
+
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_ID));
+
+ p = (const struct ikev1_pl_id *)ext;
+ ND_TCHECK_SIZE(p);
+ if (sizeof(*p) < item_len) {
+ data = (const u_char *)(p + 1);
+ len = item_len - sizeof(*p);
+ } else {
+ data = NULL;
+ len = 0;
+ }
+
+#if 0 /*debug*/
+ ND_PRINT(" [phase=%u doi=%u proto=%u]", phase, doi, proto);
+#endif
+ switch (phase) {
+#ifndef USE_IPSECDOI_IN_PHASE1
+ case 1:
+#endif
+ default:
+ ND_PRINT(" idtype=%s",
+ STR_OR_ID(GET_U_1(p->d.id_type), idtypestr));
+ ND_PRINT(" doi_data=%u",
+ GET_BE_U_4(p->d.doi_data) & 0xffffff);
+ break;
+
+#ifdef USE_IPSECDOI_IN_PHASE1
+ case 1:
+#endif
+ case 2:
+ {
+ const struct ipsecdoi_id *doi_p;
+ const char *p_name;
+ uint8_t type, proto_id;
+
+ doi_p = (const struct ipsecdoi_id *)ext;
+ ND_TCHECK_SIZE(doi_p);
+ type = GET_U_1(doi_p->type);
+ ND_PRINT(" idtype=%s", STR_OR_ID(type, ipsecidtypestr));
+ /* A protocol ID of 0 DOES NOT mean IPPROTO_IP! */
+ proto_id = GET_U_1(doi_p->proto_id);
+ if (!ndo->ndo_nflag && proto_id && (p_name = netdb_protoname(proto_id)) != NULL)
+ ND_PRINT(" protoid=%s", p_name);
+ else
+ ND_PRINT(" protoid=%u", proto_id);
+ ND_PRINT(" port=%u", GET_BE_U_2(doi_p->port));
+ if (!len)
+ break;
+ if (data == NULL)
+ goto trunc;
+ ND_TCHECK_LEN(data, len);
+ switch (type) {
+ case IPSECDOI_ID_IPV4_ADDR:
+ if (len < 4)
+ ND_PRINT(" len=%u [bad: < 4]", len);
+ else
+ ND_PRINT(" len=%u %s", len, GET_IPADDR_STRING(data));
+ len = 0;
+ break;
+ case IPSECDOI_ID_FQDN:
+ case IPSECDOI_ID_USER_FQDN:
+ {
+ u_int i;
+ ND_PRINT(" len=%u ", len);
+ for (i = 0; i < len; i++)
+ fn_print_char(ndo, GET_U_1(data + i));
+ len = 0;
+ break;
+ }
+ case IPSECDOI_ID_IPV4_ADDR_SUBNET:
+ {
+ const u_char *mask;
+ if (len < 8)
+ ND_PRINT(" len=%u [bad: < 8]", len);
+ else {
+ mask = data + sizeof(nd_ipv4);
+ ND_PRINT(" len=%u %s/%u.%u.%u.%u", len,
+ GET_IPADDR_STRING(data),
+ GET_U_1(mask), GET_U_1(mask + 1),
+ GET_U_1(mask + 2),
+ GET_U_1(mask + 3));
+ }
+ len = 0;
+ break;
+ }
+ case IPSECDOI_ID_IPV6_ADDR:
+ if (len < 16)
+ ND_PRINT(" len=%u [bad: < 16]", len);
+ else
+ ND_PRINT(" len=%u %s", len, GET_IP6ADDR_STRING(data));
+ len = 0;
+ break;
+ case IPSECDOI_ID_IPV6_ADDR_SUBNET:
+ {
+ const u_char *mask;
+ if (len < 32)
+ ND_PRINT(" len=%u [bad: < 32]", len);
+ else {
+ mask = (const u_char *)(data + sizeof(nd_ipv6));
+ /*XXX*/
+ ND_PRINT(" len=%u %s/0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", len,
+ GET_IP6ADDR_STRING(data),
+ GET_U_1(mask), GET_U_1(mask + 1),
+ GET_U_1(mask + 2),
+ GET_U_1(mask + 3),
+ GET_U_1(mask + 4),
+ GET_U_1(mask + 5),
+ GET_U_1(mask + 6),
+ GET_U_1(mask + 7),
+ GET_U_1(mask + 8),
+ GET_U_1(mask + 9),
+ GET_U_1(mask + 10),
+ GET_U_1(mask + 11),
+ GET_U_1(mask + 12),
+ GET_U_1(mask + 13),
+ GET_U_1(mask + 14),
+ GET_U_1(mask + 15));
+ }
+ len = 0;
+ break;
+ }
+ case IPSECDOI_ID_IPV4_ADDR_RANGE:
+ if (len < 8)
+ ND_PRINT(" len=%u [bad: < 8]", len);
+ else {
+ ND_PRINT(" len=%u %s-%s", len,
+ GET_IPADDR_STRING(data),
+ GET_IPADDR_STRING(data + sizeof(nd_ipv4)));
+ }
+ len = 0;
+ break;
+ case IPSECDOI_ID_IPV6_ADDR_RANGE:
+ if (len < 32)
+ ND_PRINT(" len=%u [bad: < 32]", len);
+ else {
+ ND_PRINT(" len=%u %s-%s", len,
+ GET_IP6ADDR_STRING(data),
+ GET_IP6ADDR_STRING(data + sizeof(nd_ipv6)));
+ }
+ len = 0;
+ break;
+ case IPSECDOI_ID_DER_ASN1_DN:
+ case IPSECDOI_ID_DER_ASN1_GN:
+ case IPSECDOI_ID_KEY_ID:
+ break;
+ }
+ break;
+ }
+ }
+ if (data && len) {
+ ND_PRINT(" len=%u", len);
+ if (2 < ndo->ndo_vflag) {
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)data, len))
+ goto trunc;
+ }
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_ID));
+ return NULL;
+}
+
+static const u_char *
+ikev1_cert_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext, u_int item_len,
+ const u_char *ep _U_, uint32_t phase _U_,
+ uint32_t doi0 _U_,
+ uint32_t proto0 _U_, int depth _U_)
+{
+ const struct ikev1_pl_cert *p;
+ static const char *certstr[] = {
+ "none", "pkcs7", "pgp", "dns",
+ "x509sign", "x509ke", "kerberos", "crl",
+ "arl", "spki", "x509attr",
+ };
+
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_CERT));
+
+ p = (const struct ikev1_pl_cert *)ext;
+ ND_TCHECK_SIZE(p);
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" len=%u", item_len - 4);
+ ND_PRINT(" type=%s", STR_OR_ID(GET_U_1(p->encode), certstr));
+ if (2 < ndo->ndo_vflag && 4 < item_len) {
+ /* Print the entire payload in hex */
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), item_len - 4))
+ goto trunc;
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_CERT));
+ return NULL;
+}
+
+static const u_char *
+ikev1_cr_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext, u_int item_len,
+ const u_char *ep _U_, uint32_t phase _U_, uint32_t doi0 _U_,
+ uint32_t proto0 _U_, int depth _U_)
+{
+ const struct ikev1_pl_cert *p;
+ static const char *certstr[] = {
+ "none", "pkcs7", "pgp", "dns",
+ "x509sign", "x509ke", "kerberos", "crl",
+ "arl", "spki", "x509attr",
+ };
+
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_CR));
+
+ p = (const struct ikev1_pl_cert *)ext;
+ ND_TCHECK_SIZE(p);
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" len=%u", item_len - 4);
+ ND_PRINT(" type=%s", STR_OR_ID(GET_U_1(p->encode), certstr));
+ if (2 < ndo->ndo_vflag && 4 < item_len) {
+ /* Print the entire payload in hex */
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), item_len - 4))
+ goto trunc;
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_CR));
+ return NULL;
+}
+
+static const u_char *
+ikev1_hash_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext, u_int item_len,
+ const u_char *ep _U_, uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_HASH));
+
+ ND_TCHECK_SIZE(ext);
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" len=%u", item_len - 4);
+ if (2 < ndo->ndo_vflag && 4 < item_len) {
+ /* Print the entire payload in hex */
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), item_len - 4))
+ goto trunc;
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_HASH));
+ return NULL;
+}
+
+static const u_char *
+ikev1_sig_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext, u_int item_len,
+ const u_char *ep _U_, uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_SIG));
+
+ ND_TCHECK_SIZE(ext);
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" len=%u", item_len - 4);
+ if (2 < ndo->ndo_vflag && 4 < item_len) {
+ /* Print the entire payload in hex */
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), item_len - 4))
+ goto trunc;
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_SIG));
+ return NULL;
+}
+
+static const u_char *
+ikev1_nonce_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext,
+ u_int item_len,
+ const u_char *ep,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_NONCE));
+
+ ND_TCHECK_SIZE(ext);
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" n len=%u", item_len - 4);
+ if (item_len > 4) {
+ if (ndo->ndo_vflag > 2) {
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), item_len - 4))
+ goto trunc;
+ } else if (ndo->ndo_vflag > 1) {
+ ND_PRINT(" ");
+ if (!ike_show_somedata(ndo, (const u_char *)(ext + 1), ep))
+ goto trunc;
+ }
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_NONCE));
+ return NULL;
+}
+
+static const u_char *
+ikev1_n_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext, u_int item_len,
+ const u_char *ep, uint32_t phase _U_, uint32_t doi0 _U_,
+ uint32_t proto0 _U_, int depth _U_)
+{
+ const struct ikev1_pl_n *p;
+ const u_char *cp;
+ const u_char *ep2;
+ uint32_t doi;
+ uint32_t proto;
+ uint16_t type;
+ uint8_t spi_size;
+ static const char *notify_error_str[] = {
+ NULL, "INVALID-PAYLOAD-TYPE",
+ "DOI-NOT-SUPPORTED", "SITUATION-NOT-SUPPORTED",
+ "INVALID-COOKIE", "INVALID-MAJOR-VERSION",
+ "INVALID-MINOR-VERSION", "INVALID-EXCHANGE-TYPE",
+ "INVALID-FLAGS", "INVALID-MESSAGE-ID",
+ "INVALID-PROTOCOL-ID", "INVALID-SPI",
+ "INVALID-TRANSFORM-ID", "ATTRIBUTES-NOT-SUPPORTED",
+ "NO-PROPOSAL-CHOSEN", "BAD-PROPOSAL-SYNTAX",
+ "PAYLOAD-MALFORMED", "INVALID-KEY-INFORMATION",
+ "INVALID-ID-INFORMATION", "INVALID-CERT-ENCODING",
+ "INVALID-CERTIFICATE", "CERT-TYPE-UNSUPPORTED",
+ "INVALID-CERT-AUTHORITY", "INVALID-HASH-INFORMATION",
+ "AUTHENTICATION-FAILED", "INVALID-SIGNATURE",
+ "ADDRESS-NOTIFICATION", "NOTIFY-SA-LIFETIME",
+ "CERTIFICATE-UNAVAILABLE", "UNSUPPORTED-EXCHANGE-TYPE",
+ "UNEQUAL-PAYLOAD-LENGTHS",
+ };
+ static const char *ipsec_notify_error_str[] = {
+ "RESERVED",
+ };
+ static const char *notify_status_str[] = {
+ "CONNECTED",
+ };
+ static const char *ipsec_notify_status_str[] = {
+ "RESPONDER-LIFETIME", "REPLAY-STATUS",
+ "INITIAL-CONTACT",
+ };
+/* NOTE: these macro must be called with x in proper range */
+
+/* 0 - 8191 */
+#define NOTIFY_ERROR_STR(x) \
+ STR_OR_ID((x), notify_error_str)
+
+/* 8192 - 16383 */
+#define IPSEC_NOTIFY_ERROR_STR(x) \
+ STR_OR_ID((u_int)((x) - 8192), ipsec_notify_error_str)
+
+/* 16384 - 24575 */
+#define NOTIFY_STATUS_STR(x) \
+ STR_OR_ID((u_int)((x) - 16384), notify_status_str)
+
+/* 24576 - 32767 */
+#define IPSEC_NOTIFY_STATUS_STR(x) \
+ STR_OR_ID((u_int)((x) - 24576), ipsec_notify_status_str)
+
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_N));
+
+ p = (const struct ikev1_pl_n *)ext;
+ ND_TCHECK_SIZE(p);
+ doi = GET_BE_U_4(p->doi);
+ proto = GET_U_1(p->prot_id);
+ if (doi != 1) {
+ ND_PRINT(" doi=%u", doi);
+ ND_PRINT(" proto=%u", proto);
+ type = GET_BE_U_2(p->type);
+ if (type < 8192)
+ ND_PRINT(" type=%s", NOTIFY_ERROR_STR(type));
+ else if (type < 16384)
+ ND_PRINT(" type=%s", numstr(type));
+ else if (type < 24576)
+ ND_PRINT(" type=%s", NOTIFY_STATUS_STR(type));
+ else
+ ND_PRINT(" type=%s", numstr(type));
+ spi_size = GET_U_1(p->spi_size);
+ if (spi_size) {
+ ND_PRINT(" spi=");
+ if (!rawprint(ndo, (const uint8_t *)(p + 1), spi_size))
+ goto trunc;
+ }
+ return (const u_char *)(p + 1) + spi_size;
+ }
+
+ ND_PRINT(" doi=ipsec");
+ ND_PRINT(" proto=%s", PROTOIDSTR(proto));
+ type = GET_BE_U_2(p->type);
+ if (type < 8192)
+ ND_PRINT(" type=%s", NOTIFY_ERROR_STR(type));
+ else if (type < 16384)
+ ND_PRINT(" type=%s", IPSEC_NOTIFY_ERROR_STR(type));
+ else if (type < 24576)
+ ND_PRINT(" type=%s", NOTIFY_STATUS_STR(type));
+ else if (type < 32768)
+ ND_PRINT(" type=%s", IPSEC_NOTIFY_STATUS_STR(type));
+ else
+ ND_PRINT(" type=%s", numstr(type));
+ spi_size = GET_U_1(p->spi_size);
+ if (spi_size) {
+ ND_PRINT(" spi=");
+ if (!rawprint(ndo, (const uint8_t *)(p + 1), spi_size))
+ goto trunc;
+ }
+
+ cp = (const u_char *)(p + 1) + spi_size;
+ ep2 = (const u_char *)p + item_len;
+
+ if (cp < ep) {
+ switch (type) {
+ case IPSECDOI_NTYPE_RESPONDER_LIFETIME:
+ {
+ const struct attrmap *map = oakley_t_map;
+ size_t nmap = sizeof(oakley_t_map)/sizeof(oakley_t_map[0]);
+ ND_PRINT(" attrs=(");
+ while (cp < ep && cp < ep2) {
+ cp = ikev1_attrmap_print(ndo, cp, ep2, map, nmap);
+ if (cp == NULL) {
+ ND_PRINT(")");
+ goto trunc;
+ }
+ }
+ ND_PRINT(")");
+ break;
+ }
+ case IPSECDOI_NTYPE_REPLAY_STATUS:
+ ND_PRINT(" status=(");
+ ND_PRINT("replay detection %sabled",
+ GET_BE_U_4(cp) ? "en" : "dis");
+ ND_PRINT(")");
+ break;
+ default:
+ /*
+ * XXX - fill in more types here; see, for example,
+ * draft-ietf-ipsec-notifymsg-04.
+ */
+ if (ndo->ndo_vflag > 3) {
+ ND_PRINT(" data=(");
+ if (!rawprint(ndo, (const uint8_t *)(cp), ep - cp))
+ goto trunc;
+ ND_PRINT(")");
+ } else {
+ if (!ike_show_somedata(ndo, cp, ep))
+ goto trunc;
+ }
+ break;
+ }
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_N));
+ return NULL;
+}
+
+static const u_char *
+ikev1_d_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext, u_int item_len _U_,
+ const u_char *ep _U_, uint32_t phase _U_, uint32_t doi0 _U_,
+ uint32_t proto0 _U_, int depth _U_)
+{
+ const struct ikev1_pl_d *p;
+ const uint8_t *q;
+ uint32_t doi;
+ uint32_t proto;
+ uint8_t spi_size;
+ uint16_t num_spi;
+ u_int i;
+
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_D));
+
+ p = (const struct ikev1_pl_d *)ext;
+ ND_TCHECK_SIZE(p);
+ doi = GET_BE_U_4(p->doi);
+ proto = GET_U_1(p->prot_id);
+ if (doi != 1) {
+ ND_PRINT(" doi=%u", doi);
+ ND_PRINT(" proto=%u", proto);
+ } else {
+ ND_PRINT(" doi=ipsec");
+ ND_PRINT(" proto=%s", PROTOIDSTR(proto));
+ }
+ spi_size = GET_U_1(p->spi_size);
+ ND_PRINT(" spilen=%u", spi_size);
+ num_spi = GET_BE_U_2(p->num_spi);
+ ND_PRINT(" nspi=%u", num_spi);
+ ND_PRINT(" spi=");
+ q = (const uint8_t *)(p + 1);
+ for (i = 0; i < num_spi; i++) {
+ if (i != 0)
+ ND_PRINT(",");
+ if (!rawprint(ndo, (const uint8_t *)q, spi_size))
+ goto trunc;
+ q += spi_size;
+ }
+ return q;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_D));
+ return NULL;
+}
+
+static const u_char *
+ikev1_vid_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep _U_,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ ND_PRINT("%s:", NPSTR(ISAKMP_NPTYPE_VID));
+
+ ND_TCHECK_SIZE(ext);
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" len=%u", item_len - 4);
+ if (2 < ndo->ndo_vflag && 4 < item_len) {
+ /* Print the entire payload in hex */
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), item_len - 4))
+ goto trunc;
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_VID));
+ return NULL;
+}
+
+/************************************************************/
+/* */
+/* IKE v2 - rfc4306 - dissector */
+/* */
+/************************************************************/
+
+static void
+ikev2_pay_print(netdissect_options *ndo, const char *payname, uint8_t critical)
+{
+ ND_PRINT("%s%s:", payname, critical&0x80 ? "[C]" : "");
+}
+
+static const u_char *
+ikev2_gen_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext, u_int item_len)
+{
+ const struct isakmp_gen *p = (const struct isakmp_gen *)ext;
+
+ ND_TCHECK_SIZE(ext);
+ ikev2_pay_print(ndo, NPSTR(tpay), GET_U_1(p->critical));
+
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" len=%u", item_len - 4);
+ if (2 < ndo->ndo_vflag && 4 < item_len) {
+ /* Print the entire payload in hex */
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), item_len - 4))
+ goto trunc;
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(tpay));
+ return NULL;
+}
+
+static const u_char *
+ikev2_t_print(netdissect_options *ndo, int tcount,
+ const struct isakmp_gen *ext, u_int item_len,
+ const u_char *ep)
+{
+ const struct ikev2_t *p;
+ uint16_t t_id;
+ uint8_t t_type;
+ const u_char *cp;
+ const char *idstr;
+ const struct attrmap *map;
+ size_t nmap;
+ const u_char *ep2;
+
+ p = (const struct ikev2_t *)ext;
+ ND_TCHECK_SIZE(p);
+ ikev2_pay_print(ndo, NPSTR(ISAKMP_NPTYPE_T), GET_U_1(p->h.critical));
+
+ t_id = GET_BE_U_2(p->t_id);
+
+ map = NULL;
+ nmap = 0;
+
+ t_type = GET_U_1(p->t_type);
+ switch (t_type) {
+ case IV2_T_ENCR:
+ idstr = STR_OR_ID(t_id, esp_p_map);
+ map = encr_t_map;
+ nmap = sizeof(encr_t_map)/sizeof(encr_t_map[0]);
+ break;
+
+ case IV2_T_PRF:
+ idstr = STR_OR_ID(t_id, prf_p_map);
+ break;
+
+ case IV2_T_INTEG:
+ idstr = STR_OR_ID(t_id, integ_p_map);
+ break;
+
+ case IV2_T_DH:
+ idstr = STR_OR_ID(t_id, dh_p_map);
+ break;
+
+ case IV2_T_ESN:
+ idstr = STR_OR_ID(t_id, esn_p_map);
+ break;
+
+ default:
+ idstr = NULL;
+ break;
+ }
+
+ if (idstr)
+ ND_PRINT(" #%u type=%s id=%s ", tcount,
+ STR_OR_ID(t_type, ikev2_t_type_map),
+ idstr);
+ else
+ ND_PRINT(" #%u type=%s id=%u ", tcount,
+ STR_OR_ID(t_type, ikev2_t_type_map),
+ t_id);
+ cp = (const u_char *)(p + 1);
+ ep2 = (const u_char *)p + item_len;
+ while (cp < ep && cp < ep2) {
+ if (map && nmap) {
+ cp = ikev1_attrmap_print(ndo, cp, ep2, map, nmap);
+ } else
+ cp = ikev1_attr_print(ndo, cp, ep2);
+ if (cp == NULL)
+ goto trunc;
+ }
+ if (ep < ep2)
+ ND_PRINT("...");
+ return cp;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_T));
+ return NULL;
+}
+
+static const u_char *
+ikev2_p_print(netdissect_options *ndo, u_char tpay _U_, int pcount _U_,
+ const struct isakmp_gen *ext, u_int oprop_length,
+ const u_char *ep, int depth)
+{
+ const struct ikev2_p *p;
+ u_int prop_length;
+ uint8_t spi_size;
+ const u_char *cp;
+ int i;
+ int tcount;
+ u_char np;
+ u_int item_len;
+
+ p = (const struct ikev2_p *)ext;
+ ND_TCHECK_SIZE(p);
+
+ ikev2_pay_print(ndo, NPSTR(ISAKMP_NPTYPE_P), GET_U_1(p->h.critical));
+
+ /*
+ * ikev2_sa_print() guarantees that this is >= 4.
+ */
+ prop_length = oprop_length - 4;
+ ND_PRINT(" #%u protoid=%s transform=%u len=%u",
+ GET_U_1(p->p_no), PROTOIDSTR(GET_U_1(p->prot_id)),
+ GET_U_1(p->num_t), oprop_length);
+ cp = (const u_char *)(p + 1);
+
+ spi_size = GET_U_1(p->spi_size);
+ if (spi_size) {
+ if (prop_length < spi_size)
+ goto toolong;
+ ND_PRINT(" spi=");
+ if (!rawprint(ndo, (const uint8_t *)cp, spi_size))
+ goto trunc;
+ cp += spi_size;
+ prop_length -= spi_size;
+ }
+
+ /*
+ * Print the transforms.
+ */
+ tcount = 0;
+ for (np = ISAKMP_NPTYPE_T; np != 0; np = GET_U_1(ext->np)) {
+ tcount++;
+ ext = (const struct isakmp_gen *)cp;
+ if (prop_length < sizeof(*ext))
+ goto toolong;
+ ND_TCHECK_SIZE(ext);
+
+ /*
+ * Since we can't have a payload length of less than 4 bytes,
+ * we need to bail out here if the generic header is nonsensical
+ * or truncated, otherwise we could loop forever processing
+ * zero-length items or otherwise misdissect the packet.
+ */
+ item_len = GET_BE_U_2(ext->len);
+ if (item_len <= 4)
+ goto trunc;
+
+ if (prop_length < item_len)
+ goto toolong;
+ ND_TCHECK_LEN(cp, item_len);
+
+ depth++;
+ ND_PRINT("\n");
+ for (i = 0; i < depth; i++)
+ ND_PRINT(" ");
+ ND_PRINT("(");
+ if (np == ISAKMP_NPTYPE_T) {
+ cp = ikev2_t_print(ndo, tcount, ext, item_len, ep);
+ if (cp == NULL) {
+ /* error, already reported */
+ return NULL;
+ }
+ } else {
+ ND_PRINT("%s", NPSTR(np));
+ cp += item_len;
+ }
+ ND_PRINT(")");
+ depth--;
+ prop_length -= item_len;
+ }
+ return cp;
+toolong:
+ /*
+ * Skip the rest of the proposal.
+ */
+ cp += prop_length;
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_P));
+ return cp;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_P));
+ return NULL;
+}
+
+static const u_char *
+ikev2_sa_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext1,
+ u_int osa_length, const u_char *ep,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth)
+{
+ const struct isakmp_gen *ext;
+ u_int sa_length;
+ const u_char *cp;
+ int i;
+ int pcount;
+ u_char np;
+ u_int item_len;
+
+ ND_TCHECK_SIZE(ext1);
+ ikev2_pay_print(ndo, "sa", GET_U_1(ext1->critical));
+
+ /*
+ * ikev2_sub0_print() guarantees that this is >= 4.
+ */
+ osa_length= GET_BE_U_2(ext1->len);
+ sa_length = osa_length - 4;
+ ND_PRINT(" len=%u", sa_length);
+
+ /*
+ * Print the payloads.
+ */
+ cp = (const u_char *)(ext1 + 1);
+ pcount = 0;
+ for (np = ISAKMP_NPTYPE_P; np != 0; np = GET_U_1(ext->np)) {
+ pcount++;
+ ext = (const struct isakmp_gen *)cp;
+ if (sa_length < sizeof(*ext))
+ goto toolong;
+ ND_TCHECK_SIZE(ext);
+
+ /*
+ * Since we can't have a payload length of less than 4 bytes,
+ * we need to bail out here if the generic header is nonsensical
+ * or truncated, otherwise we could loop forever processing
+ * zero-length items or otherwise misdissect the packet.
+ */
+ item_len = GET_BE_U_2(ext->len);
+ if (item_len <= 4)
+ goto trunc;
+
+ if (sa_length < item_len)
+ goto toolong;
+ ND_TCHECK_LEN(cp, item_len);
+
+ depth++;
+ ND_PRINT("\n");
+ for (i = 0; i < depth; i++)
+ ND_PRINT(" ");
+ ND_PRINT("(");
+ if (np == ISAKMP_NPTYPE_P) {
+ cp = ikev2_p_print(ndo, np, pcount, ext, item_len,
+ ep, depth);
+ if (cp == NULL) {
+ /* error, already reported */
+ return NULL;
+ }
+ } else {
+ ND_PRINT("%s", NPSTR(np));
+ cp += item_len;
+ }
+ ND_PRINT(")");
+ depth--;
+ sa_length -= item_len;
+ }
+ return cp;
+toolong:
+ /*
+ * Skip the rest of the SA.
+ */
+ cp += sa_length;
+ ND_PRINT(" [|%s]", NPSTR(tpay));
+ return cp;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(tpay));
+ return NULL;
+}
+
+static const u_char *
+ikev2_ke_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep _U_,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ const struct ikev2_ke *k;
+
+ k = (const struct ikev2_ke *)ext;
+ ND_TCHECK_SIZE(k);
+ ikev2_pay_print(ndo, NPSTR(tpay), GET_U_1(k->h.critical));
+
+ if (item_len < 8) {
+ ND_PRINT(" len=%u < 8", item_len);
+ return (const u_char *)ext + item_len;
+ }
+ ND_PRINT(" len=%u group=%s", item_len - 8,
+ STR_OR_ID(GET_BE_U_2(k->ke_group), dh_p_map));
+
+ if (2 < ndo->ndo_vflag && 8 < item_len) {
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(k + 1), item_len - 8))
+ goto trunc;
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(tpay));
+ return NULL;
+}
+
+static const u_char *
+ikev2_ID_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep _U_,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ const struct ikev2_id *idp;
+ u_int idtype_len, i;
+ unsigned int dumpascii, dumphex;
+ const unsigned char *typedata;
+
+ idp = (const struct ikev2_id *)ext;
+ ND_TCHECK_SIZE(idp);
+ ikev2_pay_print(ndo, NPSTR(tpay), GET_U_1(idp->h.critical));
+
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" len=%u", item_len - 4);
+ if (2 < ndo->ndo_vflag && 4 < item_len) {
+ /* Print the entire payload in hex */
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), item_len - 4))
+ goto trunc;
+ }
+
+ idtype_len =item_len - sizeof(struct ikev2_id);
+ dumpascii = 0;
+ dumphex = 0;
+ typedata = (const unsigned char *)(ext)+sizeof(struct ikev2_id);
+
+ switch(GET_U_1(idp->type)) {
+ case ID_IPV4_ADDR:
+ ND_PRINT(" ipv4:");
+ dumphex=1;
+ break;
+ case ID_FQDN:
+ ND_PRINT(" fqdn:");
+ dumpascii=1;
+ break;
+ case ID_RFC822_ADDR:
+ ND_PRINT(" rfc822:");
+ dumpascii=1;
+ break;
+ case ID_IPV6_ADDR:
+ ND_PRINT(" ipv6:");
+ dumphex=1;
+ break;
+ case ID_DER_ASN1_DN:
+ ND_PRINT(" dn:");
+ dumphex=1;
+ break;
+ case ID_DER_ASN1_GN:
+ ND_PRINT(" gn:");
+ dumphex=1;
+ break;
+ case ID_KEY_ID:
+ ND_PRINT(" keyid:");
+ dumphex=1;
+ break;
+ }
+
+ if(dumpascii) {
+ ND_TCHECK_LEN(typedata, idtype_len);
+ for(i=0; i<idtype_len; i++) {
+ if(ND_ASCII_ISPRINT(GET_U_1(typedata + i))) {
+ ND_PRINT("%c", GET_U_1(typedata + i));
+ } else {
+ ND_PRINT(".");
+ }
+ }
+ }
+ if(dumphex) {
+ if (!rawprint(ndo, (const uint8_t *)typedata, idtype_len))
+ goto trunc;
+ }
+
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(tpay));
+ return NULL;
+}
+
+static const u_char *
+ikev2_cert_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep _U_,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ return ikev2_gen_print(ndo, tpay, ext, item_len);
+}
+
+static const u_char *
+ikev2_cr_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep _U_,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ return ikev2_gen_print(ndo, tpay, ext, item_len);
+}
+
+static const u_char *
+ikev2_auth_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ const struct ikev2_auth *p;
+ const char *v2_auth[]={ "invalid", "rsasig",
+ "shared-secret", "dsssig" };
+ const u_char *authdata = (const u_char *)ext + sizeof(struct ikev2_auth);
+
+ ND_TCHECK_LEN(ext, sizeof(struct ikev2_auth));
+ p = (const struct ikev2_auth *)ext;
+ ikev2_pay_print(ndo, NPSTR(tpay), GET_U_1(p->h.critical));
+
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" len=%u method=%s", item_len-4,
+ STR_OR_ID(GET_U_1(p->auth_method), v2_auth));
+ if (item_len > 4) {
+ if (ndo->ndo_vflag > 1) {
+ ND_PRINT(" authdata=(");
+ if (!rawprint(ndo, (const uint8_t *)authdata, item_len - sizeof(struct ikev2_auth)))
+ goto trunc;
+ ND_PRINT(") ");
+ } else if (ndo->ndo_vflag) {
+ if (!ike_show_somedata(ndo, authdata, ep))
+ goto trunc;
+ }
+ }
+
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(tpay));
+ return NULL;
+}
+
+static const u_char *
+ikev2_nonce_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ ND_TCHECK_SIZE(ext);
+ ikev2_pay_print(ndo, "nonce", GET_U_1(ext->critical));
+
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" len=%u", item_len - 4);
+ if (1 < ndo->ndo_vflag && 4 < item_len) {
+ ND_PRINT(" nonce=(");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), item_len - 4))
+ goto trunc;
+ ND_PRINT(") ");
+ } else if(ndo->ndo_vflag && 4 < item_len) {
+ if(!ike_show_somedata(ndo, (const u_char *)(ext+1), ep)) goto trunc;
+ }
+
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(tpay));
+ return NULL;
+}
+
+/* notify payloads */
+static const u_char *
+ikev2_n_print(netdissect_options *ndo, u_char tpay _U_,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ const struct ikev2_n *p;
+ uint16_t type;
+ uint8_t spi_size;
+ const u_char *cp;
+ u_char showspi, showsomedata;
+ const char *notify_name;
+
+ p = (const struct ikev2_n *)ext;
+ ND_TCHECK_SIZE(p);
+ ikev2_pay_print(ndo, NPSTR(ISAKMP_NPTYPE_N), GET_U_1(p->h.critical));
+
+ showspi = 1;
+ showsomedata=0;
+ notify_name=NULL;
+
+ ND_PRINT(" prot_id=%s", PROTOIDSTR(GET_U_1(p->prot_id)));
+
+ type = GET_BE_U_2(p->type);
+
+ /* notify space is annoying sparse */
+ switch(type) {
+ case IV2_NOTIFY_UNSUPPORTED_CRITICAL_PAYLOAD:
+ notify_name = "unsupported_critical_payload";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_INVALID_IKE_SPI:
+ notify_name = "invalid_ike_spi";
+ showspi = 1;
+ break;
+
+ case IV2_NOTIFY_INVALID_MAJOR_VERSION:
+ notify_name = "invalid_major_version";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_INVALID_SYNTAX:
+ notify_name = "invalid_syntax";
+ showspi = 1;
+ break;
+
+ case IV2_NOTIFY_INVALID_MESSAGE_ID:
+ notify_name = "invalid_message_id";
+ showspi = 1;
+ break;
+
+ case IV2_NOTIFY_INVALID_SPI:
+ notify_name = "invalid_spi";
+ showspi = 1;
+ break;
+
+ case IV2_NOTIFY_NO_PROPOSAL_CHOSEN:
+ notify_name = "no_protocol_chosen";
+ showspi = 1;
+ break;
+
+ case IV2_NOTIFY_INVALID_KE_PAYLOAD:
+ notify_name = "invalid_ke_payload";
+ showspi = 1;
+ break;
+
+ case IV2_NOTIFY_AUTHENTICATION_FAILED:
+ notify_name = "authentication_failed";
+ showspi = 1;
+ break;
+
+ case IV2_NOTIFY_SINGLE_PAIR_REQUIRED:
+ notify_name = "single_pair_required";
+ showspi = 1;
+ break;
+
+ case IV2_NOTIFY_NO_ADDITIONAL_SAS:
+ notify_name = "no_additional_sas";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_INTERNAL_ADDRESS_FAILURE:
+ notify_name = "internal_address_failure";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_FAILED_CP_REQUIRED:
+ notify_name = "failed:cp_required";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_INVALID_SELECTORS:
+ notify_name = "invalid_selectors";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_INITIAL_CONTACT:
+ notify_name = "initial_contact";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_SET_WINDOW_SIZE:
+ notify_name = "set_window_size";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_ADDITIONAL_TS_POSSIBLE:
+ notify_name = "additional_ts_possible";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_IPCOMP_SUPPORTED:
+ notify_name = "ipcomp_supported";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_NAT_DETECTION_SOURCE_IP:
+ notify_name = "nat_detection_source_ip";
+ showspi = 1;
+ break;
+
+ case IV2_NOTIFY_NAT_DETECTION_DESTINATION_IP:
+ notify_name = "nat_detection_destination_ip";
+ showspi = 1;
+ break;
+
+ case IV2_NOTIFY_COOKIE:
+ notify_name = "cookie";
+ showspi = 1;
+ showsomedata= 1;
+ break;
+
+ case IV2_NOTIFY_USE_TRANSPORT_MODE:
+ notify_name = "use_transport_mode";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_HTTP_CERT_LOOKUP_SUPPORTED:
+ notify_name = "http_cert_lookup_supported";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_REKEY_SA:
+ notify_name = "rekey_sa";
+ showspi = 1;
+ break;
+
+ case IV2_NOTIFY_ESP_TFC_PADDING_NOT_SUPPORTED:
+ notify_name = "tfc_padding_not_supported";
+ showspi = 0;
+ break;
+
+ case IV2_NOTIFY_NON_FIRST_FRAGMENTS_ALSO:
+ notify_name = "non_first_fragment_also";
+ showspi = 0;
+ break;
+
+ default:
+ if (type < 8192) {
+ notify_name="error";
+ } else if(type < 16384) {
+ notify_name="private-error";
+ } else if(type < 40960) {
+ notify_name="status";
+ } else {
+ notify_name="private-status";
+ }
+ }
+
+ if(notify_name) {
+ ND_PRINT(" type=%u(%s)", type, notify_name);
+ }
+
+
+ spi_size = GET_U_1(p->spi_size);
+ if (showspi && spi_size) {
+ ND_PRINT(" spi=");
+ if (!rawprint(ndo, (const uint8_t *)(p + 1), spi_size))
+ goto trunc;
+ }
+
+ cp = (const u_char *)(p + 1) + spi_size;
+
+ if (cp < ep) {
+ if (ndo->ndo_vflag > 3 || (showsomedata && ep-cp < 30)) {
+ ND_PRINT(" data=(");
+ if (!rawprint(ndo, (const uint8_t *)(cp), ep - cp))
+ goto trunc;
+
+ ND_PRINT(")");
+ } else if (showsomedata) {
+ if (!ike_show_somedata(ndo, cp, ep))
+ goto trunc;
+ }
+ }
+
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(ISAKMP_NPTYPE_N));
+ return NULL;
+}
+
+static const u_char *
+ikev2_d_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep _U_,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ return ikev2_gen_print(ndo, tpay, ext, item_len);
+}
+
+static const u_char *
+ikev2_vid_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep _U_,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ const u_char *vid;
+ u_int i, len;
+
+ ND_TCHECK_SIZE(ext);
+ ikev2_pay_print(ndo, NPSTR(tpay), GET_U_1(ext->critical));
+
+ /*
+ * Our caller has ensured that the length is >= 4.
+ */
+ ND_PRINT(" len=%u vid=", item_len - 4);
+
+ vid = (const u_char *)(ext+1);
+ len = item_len - 4;
+ ND_TCHECK_LEN(vid, len);
+ for(i=0; i<len; i++) {
+ if(ND_ASCII_ISPRINT(GET_U_1(vid + i)))
+ ND_PRINT("%c", GET_U_1(vid + i));
+ else ND_PRINT(".");
+ }
+ if (2 < ndo->ndo_vflag && 4 < len) {
+ /* Print the entire payload in hex */
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), item_len - 4))
+ goto trunc;
+ }
+ return (const u_char *)ext + item_len;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(tpay));
+ return NULL;
+}
+
+static const u_char *
+ikev2_TS_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep _U_,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ return ikev2_gen_print(ndo, tpay, ext, item_len);
+}
+
+static const u_char *
+ikev2_e_print(netdissect_options *ndo,
+#ifndef HAVE_LIBCRYPTO
+ _U_
+#endif
+ const struct isakmp *base,
+ u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep _U_,
+#ifndef HAVE_LIBCRYPTO
+ _U_
+#endif
+ uint32_t phase,
+#ifndef HAVE_LIBCRYPTO
+ _U_
+#endif
+ uint32_t doi,
+#ifndef HAVE_LIBCRYPTO
+ _U_
+#endif
+ uint32_t proto,
+#ifndef HAVE_LIBCRYPTO
+ _U_
+#endif
+ int depth)
+{
+ const u_char *dat;
+ u_int dlen;
+#ifdef HAVE_LIBCRYPTO
+ uint8_t np;
+#endif
+
+ ND_TCHECK_SIZE(ext);
+ ikev2_pay_print(ndo, NPSTR(tpay), GET_U_1(ext->critical));
+
+ dlen = item_len-4;
+
+ ND_PRINT(" len=%u", dlen);
+ if (2 < ndo->ndo_vflag && 4 < dlen) {
+ ND_PRINT(" ");
+ if (!rawprint(ndo, (const uint8_t *)(ext + 1), dlen))
+ goto trunc;
+ }
+
+ dat = (const u_char *)(ext+1);
+ ND_TCHECK_LEN(dat, dlen);
+
+#ifdef HAVE_LIBCRYPTO
+ np = GET_U_1(ext->np);
+
+ /* try to decrypt it! */
+ if(esp_decrypt_buffer_by_ikev2_print(ndo,
+ GET_U_1(base->flags) & ISAKMP_FLAG_I,
+ base->i_ck, base->r_ck,
+ dat, dat+dlen)) {
+
+ ext = (const struct isakmp_gen *)ndo->ndo_packetp;
+
+ /* got it decrypted, print stuff inside. */
+ ikev2_sub_print(ndo, base, np, ext,
+ ndo->ndo_snapend, phase, doi, proto, depth+1);
+
+ /*
+ * esp_decrypt_buffer_by_ikev2_print pushed information
+ * on the buffer stack; we're done with the buffer, so
+ * pop it (which frees the buffer)
+ */
+ nd_pop_packet_info(ndo);
+ }
+#endif
+
+
+ /* always return NULL, because E must be at end, and NP refers
+ * to what was inside.
+ */
+ return NULL;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(tpay));
+ return NULL;
+}
+
+static const u_char *
+ikev2_cp_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep _U_,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ return ikev2_gen_print(ndo, tpay, ext, item_len);
+}
+
+static const u_char *
+ikev2_eap_print(netdissect_options *ndo, u_char tpay,
+ const struct isakmp_gen *ext,
+ u_int item_len, const u_char *ep _U_,
+ uint32_t phase _U_, uint32_t doi _U_,
+ uint32_t proto _U_, int depth _U_)
+{
+ return ikev2_gen_print(ndo, tpay, ext, item_len);
+}
+
+static const u_char *
+ike_sub0_print(netdissect_options *ndo,
+ u_char np, const struct isakmp_gen *ext, const u_char *ep,
+
+ uint32_t phase, uint32_t doi, uint32_t proto, int depth)
+{
+ const u_char *cp;
+ u_int item_len;
+
+ cp = (const u_char *)ext;
+ ND_TCHECK_SIZE(ext);
+
+ /*
+ * Since we can't have a payload length of less than 4 bytes,
+ * we need to bail out here if the generic header is nonsensical
+ * or truncated, otherwise we could loop forever processing
+ * zero-length items or otherwise misdissect the packet.
+ */
+ item_len = GET_BE_U_2(ext->len);
+ if (item_len <= 4)
+ return NULL;
+
+ if (NPFUNC(np)) {
+ /*
+ * XXX - what if item_len is too short, or too long,
+ * for this payload type?
+ */
+ cp = (*npfunc[np])(ndo, np, ext, item_len, ep, phase, doi, proto, depth);
+ } else {
+ ND_PRINT("%s", NPSTR(np));
+ cp += item_len;
+ }
+
+ return cp;
+trunc:
+ nd_print_trunc(ndo);
+ return NULL;
+}
+
+static const u_char *
+ikev1_sub_print(netdissect_options *ndo,
+ u_char np, const struct isakmp_gen *ext, const u_char *ep,
+ uint32_t phase, uint32_t doi, uint32_t proto, int depth)
+{
+ const u_char *cp;
+ int i;
+ u_int item_len;
+
+ cp = (const u_char *)ext;
+
+ while (np) {
+ ND_TCHECK_SIZE(ext);
+
+ item_len = GET_BE_U_2(ext->len);
+ ND_TCHECK_LEN(ext, item_len);
+
+ depth++;
+ ND_PRINT("\n");
+ for (i = 0; i < depth; i++)
+ ND_PRINT(" ");
+ ND_PRINT("(");
+ cp = ike_sub0_print(ndo, np, ext, ep, phase, doi, proto, depth);
+ ND_PRINT(")");
+ depth--;
+
+ if (cp == NULL) {
+ /* Zero-length subitem */
+ return NULL;
+ }
+
+ np = GET_U_1(ext->np);
+ ext = (const struct isakmp_gen *)cp;
+ }
+ return cp;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(np));
+ return NULL;
+}
+
+static char *
+numstr(u_int x)
+{
+ static char buf[20];
+ snprintf(buf, sizeof(buf), "#%u", x);
+ return buf;
+}
+
+static void
+ikev1_print(netdissect_options *ndo,
+ const u_char *bp, u_int length,
+ const u_char *bp2, const struct isakmp *base)
+{
+ const struct isakmp *p;
+ const u_char *ep;
+ u_int flags;
+ u_char np;
+ int i;
+ u_int phase;
+
+ p = (const struct isakmp *)bp;
+ ep = ndo->ndo_snapend;
+
+ phase = (GET_BE_U_4(base->msgid) == 0) ? 1 : 2;
+ if (phase == 1)
+ ND_PRINT(" phase %u", phase);
+ else
+ ND_PRINT(" phase %u/others", phase);
+
+ i = cookie_find(&base->i_ck);
+ if (i < 0) {
+ if (iszero(ndo, base->r_ck, sizeof(base->r_ck))) {
+ /* the first packet */
+ ND_PRINT(" I");
+ if (bp2)
+ cookie_record(ndo, &base->i_ck, bp2);
+ } else
+ ND_PRINT(" ?");
+ } else {
+ if (bp2 && cookie_isinitiator(ndo, i, bp2))
+ ND_PRINT(" I");
+ else if (bp2 && cookie_isresponder(ndo, i, bp2))
+ ND_PRINT(" R");
+ else
+ ND_PRINT(" ?");
+ }
+
+ ND_PRINT(" %s", ETYPESTR(GET_U_1(base->etype)));
+ flags = GET_U_1(base->flags);
+ if (flags) {
+ ND_PRINT("[%s%s]", flags & ISAKMP_FLAG_E ? "E" : "",
+ flags & ISAKMP_FLAG_C ? "C" : "");
+ }
+
+ if (ndo->ndo_vflag) {
+ const struct isakmp_gen *ext;
+
+ ND_PRINT(":");
+
+ np = GET_U_1(base->np);
+
+ /* regardless of phase... */
+ if (flags & ISAKMP_FLAG_E) {
+ /*
+ * encrypted, nothing we can do right now.
+ * we hope to decrypt the packet in the future...
+ */
+ ND_PRINT(" [encrypted %s]", NPSTR(np));
+ goto done;
+ }
+
+ CHECKLEN(p + 1, np);
+ ext = (const struct isakmp_gen *)(p + 1);
+ ikev1_sub_print(ndo, np, ext, ep, phase, 0, 0, 0);
+ }
+
+done:
+ if (ndo->ndo_vflag) {
+ if (GET_BE_U_4(base->len) != length) {
+ ND_PRINT(" (len mismatch: isakmp %u/ip %u)",
+ GET_BE_U_4(base->len), length);
+ }
+ }
+}
+
+static const u_char *
+ikev2_sub0_print(netdissect_options *ndo, const struct isakmp *base,
+ u_char np,
+ const struct isakmp_gen *ext, const u_char *ep,
+ uint32_t phase, uint32_t doi, uint32_t proto, int depth)
+{
+ const u_char *cp;
+ u_int item_len;
+
+ cp = (const u_char *)ext;
+ ND_TCHECK_SIZE(ext);
+
+ /*
+ * Since we can't have a payload length of less than 4 bytes,
+ * we need to bail out here if the generic header is nonsensical
+ * or truncated, otherwise we could loop forever processing
+ * zero-length items or otherwise misdissect the packet.
+ */
+ item_len = GET_BE_U_2(ext->len);
+ if (item_len <= 4)
+ return NULL;
+
+ if (np == ISAKMP_NPTYPE_v2E) {
+ cp = ikev2_e_print(ndo, base, np, ext, item_len,
+ ep, phase, doi, proto, depth);
+ } else if (NPFUNC(np)) {
+ /*
+ * XXX - what if item_len is too short, or too long,
+ * for this payload type?
+ */
+ cp = (*npfunc[np])(ndo, np, ext, item_len,
+ ep, phase, doi, proto, depth);
+ } else {
+ ND_PRINT("%s", NPSTR(np));
+ cp += item_len;
+ }
+
+ return cp;
+trunc:
+ nd_print_trunc(ndo);
+ return NULL;
+}
+
+static const u_char *
+ikev2_sub_print(netdissect_options *ndo,
+ const struct isakmp *base,
+ u_char np, const struct isakmp_gen *ext, const u_char *ep,
+ uint32_t phase, uint32_t doi, uint32_t proto, int depth)
+{
+ const u_char *cp;
+ int i;
+
+ cp = (const u_char *)ext;
+ while (np) {
+ ND_TCHECK_SIZE(ext);
+
+ ND_TCHECK_LEN(ext, GET_BE_U_2(ext->len));
+
+ depth++;
+ ND_PRINT("\n");
+ for (i = 0; i < depth; i++)
+ ND_PRINT(" ");
+ ND_PRINT("(");
+ cp = ikev2_sub0_print(ndo, base, np,
+ ext, ep, phase, doi, proto, depth);
+ ND_PRINT(")");
+ depth--;
+
+ if (cp == NULL) {
+ /* Zero-length subitem */
+ return NULL;
+ }
+
+ np = GET_U_1(ext->np);
+ ext = (const struct isakmp_gen *)cp;
+ }
+ return cp;
+trunc:
+ ND_PRINT(" [|%s]", NPSTR(np));
+ return NULL;
+}
+
+static void
+ikev2_print(netdissect_options *ndo,
+ const u_char *bp, u_int length,
+ const u_char *bp2 _U_, const struct isakmp *base)
+{
+ const struct isakmp *p;
+ const u_char *ep;
+ uint8_t flags;
+ u_char np;
+ u_int phase;
+
+ p = (const struct isakmp *)bp;
+ ep = ndo->ndo_snapend;
+
+ phase = (GET_BE_U_4(base->msgid) == 0) ? 1 : 2;
+ if (phase == 1)
+ ND_PRINT(" parent_sa");
+ else
+ ND_PRINT(" child_sa ");
+
+ ND_PRINT(" %s", ETYPESTR(GET_U_1(base->etype)));
+ flags = GET_U_1(base->flags);
+ if (flags) {
+ ND_PRINT("[%s%s%s]",
+ flags & ISAKMP_FLAG_I ? "I" : "",
+ flags & ISAKMP_FLAG_V ? "V" : "",
+ flags & ISAKMP_FLAG_R ? "R" : "");
+ }
+
+ if (ndo->ndo_vflag) {
+ const struct isakmp_gen *ext;
+
+ ND_PRINT(":");
+
+ np = GET_U_1(base->np);
+
+ /* regardless of phase... */
+ if (flags & ISAKMP_FLAG_E) {
+ /*
+ * encrypted, nothing we can do right now.
+ * we hope to decrypt the packet in the future...
+ */
+ ND_PRINT(" [encrypted %s]", NPSTR(np));
+ goto done;
+ }
+
+ CHECKLEN(p + 1, np)
+ ext = (const struct isakmp_gen *)(p + 1);
+ ikev2_sub_print(ndo, base, np, ext, ep, phase, 0, 0, 0);
+ }
+
+done:
+ if (ndo->ndo_vflag) {
+ if (GET_BE_U_4(base->len) != length) {
+ ND_PRINT(" (len mismatch: isakmp %u/ip %u)",
+ GET_BE_U_4(base->len), length);
+ }
+ }
+}
+
+void
+isakmp_print(netdissect_options *ndo,
+ const u_char *bp, u_int length,
+ const u_char *bp2)
+{
+ const struct isakmp *p;
+ const u_char *ep;
+ u_int major, minor;
+
+ ndo->ndo_protocol = "isakmp";
+#ifdef HAVE_LIBCRYPTO
+ /* initialize SAs */
+ if (ndo->ndo_sa_list_head == NULL) {
+ if (ndo->ndo_espsecret)
+ esp_decodesecret_print(ndo);
+ }
+#endif
+
+ p = (const struct isakmp *)bp;
+ ep = ndo->ndo_snapend;
+
+ if ((const struct isakmp *)ep < p + 1) {
+ nd_print_trunc(ndo);
+ return;
+ }
+
+ ND_PRINT("isakmp");
+ major = (GET_U_1(p->vers) & ISAKMP_VERS_MAJOR)
+ >> ISAKMP_VERS_MAJOR_SHIFT;
+ minor = (GET_U_1(p->vers) & ISAKMP_VERS_MINOR)
+ >> ISAKMP_VERS_MINOR_SHIFT;
+
+ if (ndo->ndo_vflag) {
+ ND_PRINT(" %u.%u", major, minor);
+ }
+
+ if (ndo->ndo_vflag) {
+ ND_PRINT(" msgid ");
+ hexprint(ndo, p->msgid, sizeof(p->msgid));
+ }
+
+ if (1 < ndo->ndo_vflag) {
+ ND_PRINT(" cookie ");
+ hexprint(ndo, p->i_ck, sizeof(p->i_ck));
+ ND_PRINT("->");
+ hexprint(ndo, p->r_ck, sizeof(p->r_ck));
+ }
+ ND_PRINT(":");
+
+ switch(major) {
+ case IKEv1_MAJOR_VERSION:
+ ikev1_print(ndo, bp, length, bp2, p);
+ break;
+
+ case IKEv2_MAJOR_VERSION:
+ ikev2_print(ndo, bp, length, bp2, p);
+ break;
+ }
+}
+
+void
+isakmp_rfc3948_print(netdissect_options *ndo,
+ const u_char *bp, u_int length,
+ const u_char *bp2, int ver, int fragmented, u_int ttl_hl)
+{
+ ndo->ndo_protocol = "isakmp_rfc3948";
+ if(length == 1 && GET_U_1(bp)==0xff) {
+ ND_PRINT("isakmp-nat-keep-alive");
+ return;
+ }
+
+ if(length < 4) {
+ goto trunc;
+ }
+
+ /*
+ * see if this is an IKE packet
+ */
+ if (GET_BE_U_4(bp) == 0) {
+ ND_PRINT("NONESP-encap: ");
+ isakmp_print(ndo, bp+4, length-4, bp2);
+ return;
+ }
+
+ /* must be an ESP packet */
+ {
+ ND_PRINT("UDP-encap: ");
+
+ esp_print(ndo, bp, length, bp2, ver, fragmented, ttl_hl);
+
+ /*
+ * Either this has decrypted the payload and
+ * printed it, in which case there's nothing more
+ * to do, or it hasn't, in which case there's
+ * nothing more to do.
+ */
+ return;
+ }
+
+trunc:
+ nd_print_trunc(ndo);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-07 06:41:41 +0000