X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/860edc72fde4104f1abc8779bd3397a17859b6c8..47fc89d711eec0a073d9b3b293a1af901b5bd791:/print-isakmp.c diff --git a/print-isakmp.c b/print-isakmp.c index ee82f5b7..a4014364 100644 --- a/print-isakmp.c +++ b/print-isakmp.c @@ -28,11 +28,6 @@ * */ -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-isakmp.c,v 1.61 2008-02-05 19:34:25 guy Exp $ (LBL)"; -#endif - #define NETDISSECT_REWORKED #ifdef HAVE_CONFIG_H #include "config.h" @@ -51,9 +46,6 @@ static const char rcsid[] _U_ = #include -#include "isakmp.h" -#include "ipsec_doi.h" -#include "oakley.h" #include "interface.h" #include "addrtoname.h" #include "extract.h" /* must come after interface.h */ @@ -63,10 +55,529 @@ static const char rcsid[] _U_ = #include "ip6.h" #endif -#ifndef HAVE_SOCKADDR_STORAGE -#define sockaddr_storage sockaddr +/* refer to RFC 2408 */ + +typedef u_char cookie_t[8]; +typedef u_char 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 */ + u_int8_t np; /* Next Payload Type */ + u_int8_t vers; +#define ISAKMP_VERS_MAJOR 0xf0 +#define ISAKMP_VERS_MAJOR_SHIFT 4 +#define ISAKMP_VERS_MINOR 0x0f +#define ISAKMP_VERS_MINOR_SHIFT 0 + u_int8_t etype; /* Exchange Type */ + u_int8_t flags; /* Flags */ + msgid_t msgid; + u_int32_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 { + u_int8_t np; /* Next Payload */ + u_int8_t critical; /* bit 7 - critical, rest is RESERVED */ + u_int16_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 { + u_int16_t type; /* defined by DOI-spec, and Attribute Format */ + u_int16_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; + u_int32_t doi; /* Domain of Interpretation */ + u_int32_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; + u_int8_t p_no; /* Proposal # */ + u_int8_t prot_id; /* Protocol */ + u_int8_t spi_size; /* SPI Size */ + u_int8_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; + u_int8_t t_no; /* Transform # */ + u_int8_t t_id; /* Transform-Id */ + u_int16_t reserved; /* 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 { + u_int8_t id_type; /* ID Type */ + u_int32_t doi_data; /* DOI Specific ID Data */ + } d; + /* Identification Data */ +}; + +/* 3.9 Certificate Payload */ +struct ikev1_pl_cert { + struct isakmp_gen h; + u_int8_t encode; /* Cert Encoding */ + char 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; + u_int8_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; + u_int32_t doi; /* Domain of Interpretation */ + u_int8_t prot_id; /* Protocol-ID */ + u_int8_t spi_size; /* SPI Size */ + u_int16_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; + u_int32_t doi; /* Domain of Interpretation */ + u_int8_t prot_id; /* Protocol-Id */ + u_int8_t spi_size; /* SPI Size */ + u_int16_t num_spi; /* # of SPIs */ + /* SPI(es) */ +}; + +struct ikev1_ph1tab { + struct ikev1_ph1 *head; + struct ikev1_ph1 *tail; + int len; +}; + +struct isakmp_ph2tab { + struct ikev1_ph2 *head; + struct ikev1_ph2 *tail; + int len; +}; + +/* IKEv2 (RFC4306) */ + +/* 3.3 Security Association Payload -- generic header */ +/* 3.3.1. Proposal Substructure */ +struct ikev2_p { + struct isakmp_gen h; + u_int8_t p_no; /* Proposal # */ + u_int8_t prot_id; /* Protocol */ + u_int8_t spi_size; /* SPI Size */ + u_int8_t num_t; /* Number of Transforms */ +}; + +/* 3.3.2. Transform Substructure */ +struct ikev2_t { + struct isakmp_gen h; + u_int8_t t_type; /* Transform Type (ENCR,PRF,INTEG,etc.*/ + u_int8_t res2; /* reserved byte */ + u_int16_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; + u_int16_t ke_group; + u_int16_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; + u_int8_t type; /* ID type */ + u_int8_t res1; + u_int16_t res2; + /* SPI */ + /* Notification Data */ +}; + +/* 3.10 Notification Payload */ +struct ikev2_n { + struct isakmp_gen h; + u_int8_t prot_id; /* Protocol-ID */ + u_int8_t spi_size; /* SPI Size */ + u_int16_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 { + 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, +}; + +/* refer to RFC 2409 */ + +#if 0 +/* isakmp sa structure */ +struct oakley_sa { + u_int8_t proto_id; /* OAKLEY */ + vchar_t *spi; /* spi */ + u_int8_t dhgrp; /* DH; group */ + u_int8_t auth_t; /* method of authentication */ + u_int8_t prf_t; /* type of prf */ + u_int8_t hash_t; /* type of hash */ + u_int8_t enc_t; /* type of cipher */ + u_int8_t life_t; /* type of duration of lifetime */ + u_int32_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; + u_int32_t doi; /* Domain of Interpretation */ + u_int32_t sit; /* Situation */ +}; + +struct ipsecdoi_secrecy_h { + u_int16_t len; + u_int16_t reserved; +}; + +/* 4.6.2.1 Identification Type Values */ +struct ipsecdoi_id { + struct isakmp_gen h; + u_int8_t type; /* ID Type */ + u_int8_t proto_id; /* Protocol ID */ + u_int16_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, \ @@ -108,10 +619,10 @@ static const u_char *ikev2_e_print(netdissect_options *ndo, struct isakmp *base, u_char tpay, const struct isakmp_gen *ext, - u_int item_len, - const u_char *end_pointer, + u_int item_len, + const u_char *end_pointer, u_int32_t phase, - u_int32_t doi0, + u_int32_t doi0, u_int32_t proto0, int depth); @@ -129,7 +640,6 @@ static const u_char *ikev2_sub_print(netdissect_options *ndo, static char *numstr(int); -static void safememcpy(void *, const void *, size_t); static void ikev1_print(netdissect_options *ndo, @@ -138,10 +648,17 @@ ikev1_print(netdissect_options *ndo, #define MAXINITIATORS 20 int ninitiator = 0; +union inaddr_u { + struct in_addr in4; +#ifdef INET6 + struct in6_addr in6; +#endif +}; struct { cookie_t initiator; - struct sockaddr_storage iaddr; - struct sockaddr_storage raddr; + u_int version; + union inaddr_u iaddr; + union inaddr_u raddr; } cookiecache[MAXINITIATORS]; /* protocol id */ @@ -161,11 +678,11 @@ static const char *npstr[] = { "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, +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, @@ -231,7 +748,7 @@ static const char *etypestr[] = { ND_PRINT((ndo," [|%s]", NPSTR(np))); \ goto done; \ } - + #define NPFUNC(x) \ (((x) < sizeof(npfunc)/sizeof(npfunc[0]) && npfunc[(x)]) \ @@ -267,10 +784,8 @@ cookie_record(cookie_t *in, const u_char *bp2) { int i; struct ip *ip; - struct sockaddr_in *sin; #ifdef INET6 struct ip6_hdr *ip6; - struct sockaddr_in6 *sin6; #endif i = cookie_find(in); @@ -282,50 +797,22 @@ cookie_record(cookie_t *in, const u_char *bp2) ip = (struct ip *)bp2; switch (IP_V(ip)) { case 4: - memset(&cookiecache[ninitiator].iaddr, 0, - sizeof(cookiecache[ninitiator].iaddr)); - memset(&cookiecache[ninitiator].raddr, 0, - sizeof(cookiecache[ninitiator].raddr)); - - sin = (struct sockaddr_in *)&cookiecache[ninitiator].iaddr; -#ifdef HAVE_SOCKADDR_SA_LEN - sin->sin_len = sizeof(struct sockaddr_in); -#endif - sin->sin_family = AF_INET; - memcpy(&sin->sin_addr, &ip->ip_src, sizeof(ip->ip_src)); - sin = (struct sockaddr_in *)&cookiecache[ninitiator].raddr; -#ifdef HAVE_SOCKADDR_SA_LEN - sin->sin_len = sizeof(struct sockaddr_in); -#endif - sin->sin_family = AF_INET; - memcpy(&sin->sin_addr, &ip->ip_dst, sizeof(ip->ip_dst)); + cookiecache[ninitiator].version = 4; + UNALIGNED_MEMCPY(&cookiecache[ninitiator].iaddr.in4, &ip->ip_src, sizeof(struct in_addr)); + UNALIGNED_MEMCPY(&cookiecache[ninitiator].raddr.in4, &ip->ip_dst, sizeof(struct in_addr)); break; #ifdef INET6 case 6: - memset(&cookiecache[ninitiator].iaddr, 0, - sizeof(cookiecache[ninitiator].iaddr)); - memset(&cookiecache[ninitiator].raddr, 0, - sizeof(cookiecache[ninitiator].raddr)); - ip6 = (struct ip6_hdr *)bp2; - sin6 = (struct sockaddr_in6 *)&cookiecache[ninitiator].iaddr; -#ifdef HAVE_SOCKADDR_SA_LEN - sin6->sin6_len = sizeof(struct sockaddr_in6); -#endif - sin6->sin6_family = AF_INET6; - memcpy(&sin6->sin6_addr, &ip6->ip6_src, sizeof(ip6->ip6_src)); - sin6 = (struct sockaddr_in6 *)&cookiecache[ninitiator].raddr; -#ifdef HAVE_SOCKADDR_SA_LEN - sin6->sin6_len = sizeof(struct sockaddr_in6); -#endif - sin6->sin6_family = AF_INET6; - memcpy(&sin6->sin6_addr, &ip6->ip6_dst, sizeof(ip6->ip6_dst)); + cookiecache[ninitiator].version = 6; + UNALIGNED_MEMCPY(&cookiecache[ninitiator].iaddr.in6, &ip6->ip6_src, sizeof(struct in6_addr)); + UNALIGNED_MEMCPY(&cookiecache[ninitiator].raddr.in6, &ip6->ip6_dst, sizeof(struct in6_addr)); break; #endif default: return; } - memcpy(&cookiecache[ninitiator].initiator, in, sizeof(*in)); + UNALIGNED_MEMCPY(&cookiecache[ninitiator].initiator, in, sizeof(*in)); ninitiator = (ninitiator + 1) % MAXINITIATORS; } @@ -334,78 +821,42 @@ cookie_record(cookie_t *in, const u_char *bp2) static int cookie_sidecheck(int i, const u_char *bp2, int initiator) { - struct sockaddr_storage ss; - struct sockaddr *sa; struct ip *ip; - struct sockaddr_in *sin; #ifdef INET6 struct ip6_hdr *ip6; - struct sockaddr_in6 *sin6; #endif - int salen; - memset(&ss, 0, sizeof(ss)); ip = (struct ip *)bp2; switch (IP_V(ip)) { case 4: - sin = (struct sockaddr_in *)&ss; -#ifdef HAVE_SOCKADDR_SA_LEN - sin->sin_len = sizeof(struct sockaddr_in); -#endif - sin->sin_family = AF_INET; - memcpy(&sin->sin_addr, &ip->ip_src, sizeof(ip->ip_src)); + if (cookiecache[i].version != 4) + return 0; + if (initiator) { + if (UNALIGNED_MEMCMP(&ip->ip_src, &cookiecache[i].iaddr.in4, sizeof(struct in_addr)) == 0) + return 1; + } else { + if (UNALIGNED_MEMCMP(&ip->ip_src, &cookiecache[i].raddr.in4, sizeof(struct in_addr)) == 0) + return 1; + } break; #ifdef INET6 case 6: + if (cookiecache[i].version != 6) + return 0; ip6 = (struct ip6_hdr *)bp2; - sin6 = (struct sockaddr_in6 *)&ss; -#ifdef HAVE_SOCKADDR_SA_LEN - sin6->sin6_len = sizeof(struct sockaddr_in6); -#endif - sin6->sin6_family = AF_INET6; - memcpy(&sin6->sin6_addr, &ip6->ip6_src, sizeof(ip6->ip6_src)); + if (initiator) { + if (UNALIGNED_MEMCMP(&ip6->ip6_src, &cookiecache[i].iaddr.in6, sizeof(struct in6_addr)) == 0) + return 1; + } else { + if (UNALIGNED_MEMCMP(&ip6->ip6_src, &cookiecache[i].raddr.in6, sizeof(struct in6_addr)) == 0) + return 1; + } break; -#endif +#endif /* INET6 */ default: - return 0; + break; } - sa = (struct sockaddr *)&ss; - if (initiator) { - if (sa->sa_family != ((struct sockaddr *)&cookiecache[i].iaddr)->sa_family) - return 0; -#ifdef HAVE_SOCKADDR_SA_LEN - salen = sa->sa_len; -#else -#ifdef INET6 - if (sa->sa_family == AF_INET6) - salen = sizeof(struct sockaddr_in6); - else - salen = sizeof(struct sockaddr); -#else - salen = sizeof(struct sockaddr); -#endif -#endif - if (memcmp(&ss, &cookiecache[i].iaddr, salen) == 0) - return 1; - } else { - if (sa->sa_family != ((struct sockaddr *)&cookiecache[i].raddr)->sa_family) - return 0; -#ifdef HAVE_SOCKADDR_SA_LEN - salen = sa->sa_len; -#else -#ifdef INET6 - if (sa->sa_family == AF_INET6) - salen = sizeof(struct sockaddr_in6); - else - salen = sizeof(struct sockaddr); -#else - salen = sizeof(struct sockaddr); -#endif -#endif - if (memcmp(&ss, &cookiecache[i].raddr, salen) == 0) - return 1; - } return 0; } @@ -445,13 +896,13 @@ static int ike_show_somedata(struct netdissect_options *ndo, if(len > 10) { len = 10; } - + /* really shouldn't happen because of above */ if(end < cp + len) { end = cp+len; elen = ep - end; } - + ND_PRINT((ndo," data=(")); if(!rawprint(ndo, (caddr_t)(cp), len)) goto trunc; ND_PRINT((ndo, "...")); @@ -476,36 +927,34 @@ ikev1_attrmap_print(netdissect_options *ndo, const u_char *p, const u_char *ep, const struct attrmap *map, size_t nmap) { - u_int16_t *q; int totlen; u_int32_t t, v; - q = (u_int16_t *)p; if (p[0] & 0x80) totlen = 4; else - totlen = 4 + EXTRACT_16BITS(&q[1]); + totlen = 4 + EXTRACT_16BITS(&p[2]); if (ep < p + totlen) { ND_PRINT((ndo,"[|attr]")); return ep + 1; } ND_PRINT((ndo,"(")); - t = EXTRACT_16BITS(&q[0]) & 0x7fff; + t = EXTRACT_16BITS(&p[0]) & 0x7fff; if (map && t < nmap && map[t].type) ND_PRINT((ndo,"type=%s ", map[t].type)); else ND_PRINT((ndo,"type=#%d ", t)); if (p[0] & 0x80) { ND_PRINT((ndo,"value=")); - v = EXTRACT_16BITS(&q[1]); + v = EXTRACT_16BITS(&p[2]); if (map && t < nmap && v < map[t].nvalue && map[t].value[v]) ND_PRINT((ndo,"%s", map[t].value[v])); else - rawprint(ndo, (caddr_t)&q[1], 2); + rawprint(ndo, (caddr_t)&p[2], 2); } else { - ND_PRINT((ndo,"len=%d value=", EXTRACT_16BITS(&q[1]))); - rawprint(ndo, (caddr_t)&p[4], EXTRACT_16BITS(&q[1])); + ND_PRINT((ndo,"len=%d value=", EXTRACT_16BITS(&p[2]))); + rawprint(ndo, (caddr_t)&p[4], EXTRACT_16BITS(&p[2])); } ND_PRINT((ndo,")")); return p + totlen; @@ -514,30 +963,28 @@ ikev1_attrmap_print(netdissect_options *ndo, static const u_char * ikev1_attr_print(netdissect_options *ndo, const u_char *p, const u_char *ep) { - u_int16_t *q; int totlen; u_int32_t t; - q = (u_int16_t *)p; if (p[0] & 0x80) totlen = 4; else - totlen = 4 + EXTRACT_16BITS(&q[1]); + totlen = 4 + EXTRACT_16BITS(&p[2]); if (ep < p + totlen) { ND_PRINT((ndo,"[|attr]")); return ep + 1; } ND_PRINT((ndo,"(")); - t = EXTRACT_16BITS(&q[0]) & 0x7fff; + t = EXTRACT_16BITS(&p[0]) & 0x7fff; ND_PRINT((ndo,"type=#%d ", t)); if (p[0] & 0x80) { ND_PRINT((ndo,"value=")); - t = q[1]; - rawprint(ndo, (caddr_t)&q[1], 2); + t = p[2]; + rawprint(ndo, (caddr_t)&p[2], 2); } else { - ND_PRINT((ndo,"len=%d value=", EXTRACT_16BITS(&q[1]))); - rawprint(ndo, (caddr_t)&p[2], EXTRACT_16BITS(&q[1])); + ND_PRINT((ndo,"len=%d value=", EXTRACT_16BITS(&p[2]))); + rawprint(ndo, (caddr_t)&p[4], EXTRACT_16BITS(&p[2])); } ND_PRINT((ndo,")")); return p + totlen; @@ -552,7 +999,6 @@ ikev1_sa_print(netdissect_options *ndo, u_char tpay _U_, { const struct ikev1_pl_sa *p; struct ikev1_pl_sa sa; - const u_int32_t *q; u_int32_t doi, sit, ident; const u_char *cp, *np; int t; @@ -561,7 +1007,7 @@ ikev1_sa_print(netdissect_options *ndo, u_char tpay _U_, p = (struct ikev1_pl_sa *)ext; ND_TCHECK(*p); - safememcpy(&sa, ext, sizeof(sa)); + UNALIGNED_MEMCPY(&sa, ext, sizeof(sa)); doi = ntohl(sa.doi); sit = ntohl(sa.sit); if (doi != 1) { @@ -571,7 +1017,6 @@ ikev1_sa_print(netdissect_options *ndo, u_char tpay _U_, } ND_PRINT((ndo," doi=ipsec")); - q = (u_int32_t *)&sa.sit; ND_PRINT((ndo," situation=")); t = 0; if (sit & 0x01) { @@ -588,7 +1033,7 @@ ikev1_sa_print(netdissect_options *ndo, u_char tpay _U_, np = (u_char *)ext + sizeof(sa); if (sit != 0x01) { ND_TCHECK2(*(ext + 1), sizeof(ident)); - safememcpy(&ident, ext + 1, sizeof(ident)); + UNALIGNED_MEMCPY(&ident, ext + 1, sizeof(ident)); ND_PRINT((ndo," ident=%u", (u_int32_t)ntohl(ident))); np += sizeof(ident); } @@ -619,7 +1064,7 @@ ikev1_p_print(netdissect_options *ndo, u_char tpay _U_, p = (struct ikev1_pl_p *)ext; ND_TCHECK(*p); - safememcpy(&prop, ext, sizeof(prop)); + UNALIGNED_MEMCPY(&prop, ext, sizeof(prop)); ND_PRINT((ndo," #%d protoid=%s transform=%d", prop.p_no, PROTOIDSTR(prop.prot_id), prop.num_t)); if (prop.spi_size) { @@ -630,10 +1075,10 @@ ikev1_p_print(netdissect_options *ndo, u_char tpay _U_, ext = (struct isakmp_gen *)((u_char *)(p + 1) + prop.spi_size); ND_TCHECK(*ext); - + cp = ikev1_sub_print(ndo, ISAKMP_NPTYPE_T, ext, ep, phase, doi0, prop.prot_id, depth); - + return cp; trunc: ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_P))); @@ -693,7 +1138,7 @@ static const char *ipcomp_p_map[] = { NULL, "oui", "deflate", "lzs", }; -const struct attrmap ipsec_t_map[] = { +static const struct attrmap ipsec_t_map[] = { { NULL, 0, { NULL } }, { "lifetype", 3, { NULL, "sec", "kb", }, }, { "life", 0, { NULL } }, @@ -720,7 +1165,7 @@ const struct attrmap ipsec_t_map[] = { { "privalg", 0, { NULL } }, }; -const struct attrmap encr_t_map[] = { +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 */ @@ -731,7 +1176,7 @@ const struct attrmap encr_t_map[] = { { "keylen", 14, { NULL }}, }; -const struct attrmap oakley_t_map[] = { +static const struct attrmap oakley_t_map[] = { { NULL, 0, { NULL } }, { "enc", 8, { NULL, "1des", "idea", "blowfish", "rc5", "3des", "cast", "aes", }, }, @@ -786,7 +1231,7 @@ ikev1_t_print(netdissect_options *ndo, u_char tpay _U_, p = (struct ikev1_pl_t *)ext; ND_TCHECK(*p); - safememcpy(&t, ext, sizeof(t)); + UNALIGNED_MEMCPY(&t, ext, sizeof(t)); switch (proto) { case 1: @@ -848,7 +1293,7 @@ ikev1_ke_print(netdissect_options *ndo, u_char tpay _U_, ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_KE))); ND_TCHECK(*ext); - safememcpy(&e, ext, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); ND_PRINT((ndo," key len=%d", ntohs(e.len) - 4)); if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) { ND_PRINT((ndo," ")); @@ -885,7 +1330,7 @@ ikev1_id_print(netdissect_options *ndo, u_char tpay _U_, p = (struct ikev1_pl_id *)ext; ND_TCHECK(*p); - safememcpy(&id, ext, sizeof(id)); + UNALIGNED_MEMCPY(&id, ext, sizeof(id)); if (sizeof(*p) < item_len) { data = (u_char *)(p + 1); len = item_len - sizeof(*p); @@ -918,7 +1363,7 @@ ikev1_id_print(netdissect_options *ndo, u_char tpay _U_, p = (struct ipsecdoi_id *)ext; ND_TCHECK(*p); - safememcpy(&id, ext, sizeof(id)); + UNALIGNED_MEMCPY(&id, ext, sizeof(id)); ND_PRINT((ndo," idtype=%s", STR_OR_ID(id.type, ipsecidtypestr))); if (id.proto_id) { #ifndef WIN32 @@ -982,15 +1427,18 @@ ikev1_id_print(netdissect_options *ndo, u_char tpay _U_, break; case IPSECDOI_ID_IPV6_ADDR_SUBNET: { - const u_int32_t *mask; + const u_char *mask; if (len < 20) ND_PRINT((ndo," len=%d [bad: < 20]", len)); else { - mask = (u_int32_t *)(data + sizeof(struct in6_addr)); + mask = (u_char *)(data + sizeof(struct in6_addr)); /*XXX*/ - ND_PRINT((ndo," len=%d %s/0x%08x%08x%08x%08x", len, + ND_PRINT((ndo," len=%d %s/0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", len, ip6addr_string(data), - mask[0], mask[1], mask[2], mask[3])); + mask[0], mask[1], mask[2], mask[3], + mask[4], mask[5], mask[6], mask[7], + mask[8], mask[9], mask[10], mask[11], + mask[12], mask[13], mask[14], mask[15])); } len = 0; break; @@ -1059,7 +1507,7 @@ ikev1_cert_print(netdissect_options *ndo, u_char tpay _U_, p = (struct ikev1_pl_cert *)ext; ND_TCHECK(*p); - safememcpy(&cert, ext, sizeof(cert)); + UNALIGNED_MEMCPY(&cert, ext, sizeof(cert)); ND_PRINT((ndo," len=%d", item_len - 4)); ND_PRINT((ndo," type=%s", STR_OR_ID((cert.encode), certstr))); if (2 < ndo->ndo_vflag && 4 < item_len) { @@ -1091,7 +1539,7 @@ ikev1_cr_print(netdissect_options *ndo, u_char tpay _U_, p = (struct ikev1_pl_cert *)ext; ND_TCHECK(*p); - safememcpy(&cert, ext, sizeof(cert)); + UNALIGNED_MEMCPY(&cert, ext, sizeof(cert)); ND_PRINT((ndo," len=%d", item_len - 4)); ND_PRINT((ndo," type=%s", STR_OR_ID((cert.encode), certstr))); if (2 < ndo->ndo_vflag && 4 < item_len) { @@ -1116,7 +1564,7 @@ ikev1_hash_print(netdissect_options *ndo, u_char tpay _U_, ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_HASH))); ND_TCHECK(*ext); - safememcpy(&e, ext, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); ND_PRINT((ndo," len=%d", ntohs(e.len) - 4)); if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) { ND_PRINT((ndo," ")); @@ -1140,7 +1588,7 @@ ikev1_sig_print(netdissect_options *ndo, u_char tpay _U_, ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_SIG))); ND_TCHECK(*ext); - safememcpy(&e, ext, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); ND_PRINT((ndo," len=%d", ntohs(e.len) - 4)); if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) { ND_PRINT((ndo," ")); @@ -1166,7 +1614,7 @@ ikev1_nonce_print(netdissect_options *ndo, u_char tpay _U_, ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_NONCE))); ND_TCHECK(*ext); - safememcpy(&e, ext, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); ND_PRINT((ndo," n len=%d", ntohs(e.len) - 4)); if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) { ND_PRINT((ndo," ")); @@ -1244,7 +1692,7 @@ ikev1_n_print(netdissect_options *ndo, u_char tpay _U_, p = (struct ikev1_pl_n *)ext; ND_TCHECK(*p); - safememcpy(&n, ext, sizeof(n)); + UNALIGNED_MEMCPY(&n, ext, sizeof(n)); doi = ntohl(n.doi); proto = n.prot_id; if (doi != 1) { @@ -1302,7 +1750,7 @@ ikev1_n_print(netdissect_options *ndo, u_char tpay _U_, } case IPSECDOI_NTYPE_REPLAY_STATUS: ND_PRINT((ndo,"replay detection %sabled", - (*(u_int32_t *)cp) ? "en" : "dis")); + EXTRACT_32BITS(cp) ? "en" : "dis")); break; case ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN: if (ikev1_sub_print(ndo, ISAKMP_NPTYPE_SA, @@ -1341,7 +1789,7 @@ ikev1_d_print(netdissect_options *ndo, u_char tpay _U_, p = (struct ikev1_pl_d *)ext; ND_TCHECK(*p); - safememcpy(&d, ext, sizeof(d)); + UNALIGNED_MEMCPY(&d, ext, sizeof(d)); doi = ntohl(d.doi); proto = d.prot_id; if (doi != 1) { @@ -1380,7 +1828,7 @@ ikev1_vid_print(netdissect_options *ndo, u_char tpay _U_, ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_VID))); ND_TCHECK(*ext); - safememcpy(&e, ext, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); ND_PRINT((ndo," len=%d", ntohs(e.len) - 4)); if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) { ND_PRINT((ndo," ")); @@ -1412,7 +1860,7 @@ ikev2_gen_print(netdissect_options *ndo, u_char tpay, struct isakmp_gen e; ND_TCHECK(*ext); - safememcpy(&e, ext, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); ikev2_pay_print(ndo, NPSTR(tpay), e.critical); ND_PRINT((ndo," len=%d", ntohs(e.len) - 4)); @@ -1444,11 +1892,11 @@ ikev2_t_print(netdissect_options *ndo, u_char tpay _U_, int pcount, p = (struct ikev2_t *)ext; ND_TCHECK(*p); - safememcpy(&t, ext, sizeof(t)); + UNALIGNED_MEMCPY(&t, ext, sizeof(t)); ikev2_pay_print(ndo, NPSTR(ISAKMP_NPTYPE_T), t.h.critical); t_id = ntohs(t.t_id); - + map = NULL; nmap = 0; @@ -1517,7 +1965,7 @@ ikev2_p_print(netdissect_options *ndo, u_char tpay _U_, int pcount _U_, p = (struct ikev2_p *)ext; ND_TCHECK(*p); - safememcpy(&prop, ext, sizeof(prop)); + UNALIGNED_MEMCPY(&prop, ext, sizeof(prop)); ikev2_pay_print(ndo, NPSTR(ISAKMP_NPTYPE_P), prop.h.critical); ND_PRINT((ndo," #%u protoid=%s transform=%d len=%u", @@ -1534,7 +1982,7 @@ ikev2_p_print(netdissect_options *ndo, u_char tpay _U_, int pcount _U_, cp = ikev2_sub_print(ndo, NULL, ISAKMP_NPTYPE_T, ext, ep, phase, doi0, prop.prot_id, depth); - + return cp; trunc: ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_P))); @@ -1542,7 +1990,7 @@ trunc: } static const u_char * -ikev2_sa_print(netdissect_options *ndo, u_char tpay, +ikev2_sa_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext1, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -1552,7 +2000,7 @@ ikev2_sa_print(netdissect_options *ndo, u_char tpay, int osa_length, sa_length; ND_TCHECK(*ext1); - safememcpy(&e, ext1, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext1, sizeof(e)); ikev2_pay_print(ndo, "sa", e.critical); osa_length= ntohs(e.len); @@ -1570,7 +2018,7 @@ trunc: } static const u_char * -ikev2_ke_print(netdissect_options *ndo, u_char tpay, +ikev2_ke_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -1581,12 +2029,12 @@ ikev2_ke_print(netdissect_options *ndo, u_char tpay, k = (struct ikev2_ke *)ext; ND_TCHECK(*ext); - safememcpy(&ke, ext, sizeof(ke)); + UNALIGNED_MEMCPY(&ke, ext, sizeof(ke)); ikev2_pay_print(ndo, NPSTR(tpay), ke.h.critical); ND_PRINT((ndo," len=%u group=%s", ntohs(ke.h.len) - 8, STR_OR_ID(ntohs(ke.ke_group), dh_p_map))); - + if (2 < ndo->ndo_vflag && 8 < ntohs(ke.h.len)) { ND_PRINT((ndo," ")); if (!rawprint(ndo, (caddr_t)(k + 1), ntohs(ke.h.len) - 8)) @@ -1599,7 +2047,7 @@ trunc: } static const u_char * -ikev2_ID_print(netdissect_options *ndo, u_char tpay, +ikev2_ID_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -1611,7 +2059,7 @@ ikev2_ID_print(netdissect_options *ndo, u_char tpay, unsigned char *typedata; ND_TCHECK(*ext); - safememcpy(&id, ext, sizeof(id)); + UNALIGNED_MEMCPY(&id, ext, sizeof(id)); ikev2_pay_print(ndo, NPSTR(tpay), id.h.critical); id_len = ntohs(id.h.len); @@ -1681,7 +2129,7 @@ trunc: } static const u_char * -ikev2_cert_print(netdissect_options *ndo, u_char tpay, +ikev2_cert_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -1691,7 +2139,7 @@ ikev2_cert_print(netdissect_options *ndo, u_char tpay, } static const u_char * -ikev2_cr_print(netdissect_options *ndo, u_char tpay, +ikev2_cr_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -1701,7 +2149,7 @@ ikev2_cr_print(netdissect_options *ndo, u_char tpay, } static const u_char * -ikev2_auth_print(netdissect_options *ndo, u_char tpay, +ikev2_auth_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -1714,11 +2162,11 @@ ikev2_auth_print(netdissect_options *ndo, u_char tpay, unsigned int len; ND_TCHECK(*ext); - safememcpy(&a, ext, sizeof(a)); + UNALIGNED_MEMCPY(&a, ext, sizeof(a)); ikev2_pay_print(ndo, NPSTR(tpay), a.h.critical); len = ntohs(a.h.len); - ND_PRINT((ndo," len=%d method=%s", len-4, + ND_PRINT((ndo," len=%d method=%s", len-4, STR_OR_ID(a.auth_method, v2_auth))); if (1 < ndo->ndo_vflag && 4 < len) { @@ -1737,7 +2185,7 @@ trunc: } static const u_char * -ikev2_nonce_print(netdissect_options *ndo, u_char tpay, +ikev2_nonce_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -1746,7 +2194,7 @@ ikev2_nonce_print(netdissect_options *ndo, u_char tpay, struct isakmp_gen e; ND_TCHECK(*ext); - safememcpy(&e, ext, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); ikev2_pay_print(ndo, "nonce", e.critical); ND_PRINT((ndo," len=%d", ntohs(e.len) - 4)); @@ -1767,7 +2215,7 @@ trunc: /* notify payloads */ static const u_char * -ikev2_n_print(netdissect_options *ndo, u_char tpay _U_, +ikev2_n_print(netdissect_options *ndo, u_char tpay _U_, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -1775,14 +2223,13 @@ ikev2_n_print(netdissect_options *ndo, u_char tpay _U_, { struct ikev2_n *p, n; const u_char *cp; - u_char *ep2; u_char showspi, showdata, showsomedata; const char *notify_name; u_int32_t type; p = (struct ikev2_n *)ext; ND_TCHECK(*p); - safememcpy(&n, ext, sizeof(n)); + UNALIGNED_MEMCPY(&n, ext, sizeof(n)); ikev2_pay_print(ndo, NPSTR(ISAKMP_NPTYPE_N), n.h.critical); showspi = 1; @@ -1856,7 +2303,7 @@ ikev2_n_print(netdissect_options *ndo, u_char tpay _U_, showspi = 0; break; - case IV2_NOTIFY_FAILED_CP_REQUIRED: + case IV2_NOTIFY_FAILED_CP_REQUIRED: notify_name = "failed:cp_required"; showspi = 0; break; @@ -1871,7 +2318,7 @@ ikev2_n_print(netdissect_options *ndo, u_char tpay _U_, showspi = 0; break; - case IV2_NOTIFY_SET_WINDOW_SIZE: + case IV2_NOTIFY_SET_WINDOW_SIZE: notify_name = "set_window_size"; showspi = 0; break; @@ -1881,7 +2328,7 @@ ikev2_n_print(netdissect_options *ndo, u_char tpay _U_, showspi = 0; break; - case IV2_NOTIFY_IPCOMP_SUPPORTED: + case IV2_NOTIFY_IPCOMP_SUPPORTED: notify_name = "ipcomp_supported"; showspi = 0; break; @@ -1943,7 +2390,7 @@ ikev2_n_print(netdissect_options *ndo, u_char tpay _U_, if(notify_name) { ND_PRINT((ndo," type=%u(%s)", type, notify_name)); } - + if (showspi && n.spi_size) { ND_PRINT((ndo," spi=")); @@ -1952,7 +2399,6 @@ ikev2_n_print(netdissect_options *ndo, u_char tpay _U_, } cp = (u_char *)(p + 1) + n.spi_size; - ep2 = (u_char *)p + item_len; if(3 < ndo->ndo_vflag) { showdata = 1; @@ -1968,7 +2414,7 @@ ikev2_n_print(netdissect_options *ndo, u_char tpay _U_, } else if(showsomedata && cp < ep) { if(!ike_show_somedata(ndo, cp, ep)) goto trunc; } - + return (u_char *)ext + item_len; trunc: ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_N))); @@ -1976,7 +2422,7 @@ trunc: } static const u_char * -ikev2_d_print(netdissect_options *ndo, u_char tpay, +ikev2_d_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -1986,7 +2432,7 @@ ikev2_d_print(netdissect_options *ndo, u_char tpay, } static const u_char * -ikev2_vid_print(netdissect_options *ndo, u_char tpay, +ikev2_vid_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -1997,10 +2443,10 @@ ikev2_vid_print(netdissect_options *ndo, u_char tpay, int i, len; ND_TCHECK(*ext); - safememcpy(&e, ext, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); ikev2_pay_print(ndo, NPSTR(tpay), e.critical); ND_PRINT((ndo," len=%d vid=", ntohs(e.len) - 4)); - + vid = (const u_char *)(ext+1); len = ntohs(e.len) - 4; ND_TCHECK2(*vid, len); @@ -2020,7 +2466,7 @@ trunc: } static const u_char * -ikev2_TS_print(netdissect_options *ndo, u_char tpay, +ikev2_TS_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -2035,7 +2481,7 @@ ikev2_e_print(netdissect_options *ndo, _U_ #endif struct isakmp *base, - u_char tpay, + u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, #ifndef HAVE_LIBCRYPTO @@ -2060,7 +2506,7 @@ ikev2_e_print(netdissect_options *ndo, volatile int dlen; ND_TCHECK(*ext); - safememcpy(&e, ext, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); ikev2_pay_print(ndo, NPSTR(tpay), e.critical); dlen = ntohs(e.len)-4; @@ -2074,14 +2520,14 @@ ikev2_e_print(netdissect_options *ndo, dat = (u_char *)(ext+1); ND_TCHECK2(*dat, dlen); - + #ifdef HAVE_LIBCRYPTO /* try to decypt it! */ if(esp_print_decrypt_buffer_by_ikev2(ndo, 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. */ @@ -2089,7 +2535,7 @@ ikev2_e_print(netdissect_options *ndo, phase, doi, proto, depth+1); } #endif - + /* always return NULL, because E must be at end, and NP refers * to what was inside. @@ -2101,7 +2547,7 @@ trunc: } static const u_char * -ikev2_cp_print(netdissect_options *ndo, u_char tpay, +ikev2_cp_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -2111,7 +2557,7 @@ ikev2_cp_print(netdissect_options *ndo, u_char tpay, } static const u_char * -ikev2_eap_print(netdissect_options *ndo, u_char tpay, +ikev2_eap_print(netdissect_options *ndo, u_char tpay, const struct isakmp_gen *ext, u_int item_len _U_, const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, @@ -2132,7 +2578,7 @@ ike_sub0_print(netdissect_options *ndo, cp = (u_char *)ext; ND_TCHECK(*ext); - safememcpy(&e, ext, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); /* * Since we can't have a payload length of less than 4 bytes, @@ -2174,8 +2620,8 @@ ikev1_sub_print(netdissect_options *ndo, while (np) { ND_TCHECK(*ext); - - safememcpy(&e, ext, sizeof(e)); + + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); ND_TCHECK2(*ext, ntohs(e.len)); @@ -2210,17 +2656,6 @@ numstr(int x) return buf; } -/* - * some compiler tries to optimize memcpy(), using the alignment constraint - * on the argument pointer type. by using this function, we try to avoid the - * optimization. - */ -static void -safememcpy(void *p, const void *q, size_t l) -{ - memcpy(p, q, l); -} - static void ikev1_print(netdissect_options *ndo, const u_char *bp, u_int length, @@ -2231,16 +2666,16 @@ ikev1_print(netdissect_options *ndo, u_char np; int i; int phase; - + p = (const struct isakmp *)bp; ep = ndo->ndo_snapend; - - phase = (*(u_int32_t *)base->msgid == 0) ? 1 : 2; + + phase = (EXTRACT_32BITS(base->msgid) == 0) ? 1 : 2; if (phase == 1) ND_PRINT((ndo," phase %d", phase)); else ND_PRINT((ndo," phase %d/others", phase)); - + i = cookie_find(&base->i_ck); if (i < 0) { if (iszero((u_char *)&base->r_ck, sizeof(base->r_ck))) { @@ -2258,19 +2693,18 @@ ikev1_print(netdissect_options *ndo, else ND_PRINT((ndo," ?")); } - + ND_PRINT((ndo," %s", ETYPESTR(base->etype))); if (base->flags) { ND_PRINT((ndo,"[%s%s]", base->flags & ISAKMP_FLAG_E ? "E" : "", base->flags & ISAKMP_FLAG_C ? "C" : "")); } - + if (ndo->ndo_vflag) { const struct isakmp_gen *ext; - int nparen; - + ND_PRINT((ndo,":")); - + /* regardless of phase... */ if (base->flags & ISAKMP_FLAG_E) { /* @@ -2280,14 +2714,13 @@ ikev1_print(netdissect_options *ndo, ND_PRINT((ndo," [encrypted %s]", NPSTR(base->np))); goto done; } - - nparen = 0; + CHECKLEN(p + 1, base->np); np = base->np; ext = (struct isakmp_gen *)(p + 1); ikev1_sub_print(ndo, np, ext, ep, phase, 0, 0, 0); } - + done: if (ndo->ndo_vflag) { if (ntohl(base->len) != length) { @@ -2309,7 +2742,7 @@ ikev2_sub0_print(netdissect_options *ndo, struct isakmp *base, cp = (u_char *)ext; ND_TCHECK(*ext); - safememcpy(&e, ext, sizeof(e)); + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); /* * Since we can't have a payload length of less than 4 bytes, @@ -2360,12 +2793,12 @@ ikev2_sub_print(netdissect_options *ndo, struct isakmp_gen e; cp = (const u_char *)ext; - pcount = 0; + pcount = 0; while (np) { pcount++; ND_TCHECK(*ext); - - safememcpy(&e, ext, sizeof(e)); + + UNALIGNED_MEMCPY(&e, ext, sizeof(e)); ND_TCHECK2(*ext, ntohs(e.len)); @@ -2406,7 +2839,7 @@ ikev2_print(netdissect_options *ndo, p = (const struct isakmp *)bp; ep = ndo->ndo_snapend; - phase = (*(u_int32_t *)base->msgid == 0) ? 1 : 2; + phase = (EXTRACT_32BITS(base->msgid) == 0) ? 1 : 2; if (phase == 1) ND_PRINT((ndo, " parent_sa")); else @@ -2422,7 +2855,6 @@ ikev2_print(netdissect_options *ndo, if (ndo->ndo_vflag) { const struct isakmp_gen *ext; - int nparen; ND_PRINT((ndo, ":")); @@ -2436,7 +2868,6 @@ ikev2_print(netdissect_options *ndo, goto done; } - nparen = 0; CHECKLEN(p + 1, base->np) np = base->np; @@ -2479,7 +2910,7 @@ isakmp_print(netdissect_options *ndo, return; } - safememcpy(&base, p, sizeof(base)); + UNALIGNED_MEMCPY(&base, p, sizeof(base)); ND_PRINT((ndo,"isakmp")); major = (base.vers & ISAKMP_VERS_MAJOR) @@ -2520,8 +2951,6 @@ isakmp_rfc3948_print(netdissect_options *ndo, const u_char *bp, u_int length, const u_char *bp2) { - const u_char *ep; - ep = ndo->ndo_snapend; if(length == 1 && bp[0]==0xff) { ND_PRINT((ndo, "isakmp-nat-keep-alive")); @@ -2531,7 +2960,7 @@ isakmp_rfc3948_print(netdissect_options *ndo, if(length < 4) { goto trunc; } - + /* * see if this is an IKE packet */ @@ -2555,7 +2984,7 @@ isakmp_rfc3948_print(netdissect_options *ndo, bp += advance; length -= advance + padlen; nh = enh & 0xff; - + ip_print_inner(ndo, bp, length, nh, bp2); return; } @@ -2573,5 +3002,5 @@ trunc: */ - +