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netdissect.h
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netdissect.h
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/*
* Copyright (c) 1988-1997
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 1998-2012 Michael Richardson <[email protected]>
* The TCPDUMP project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef netdissect_h
#define netdissect_h
#ifdef HAVE_OS_PROTO_H
#include "os-proto.h"
#endif
#include <sys/types.h>
#ifndef HAVE___ATTRIBUTE__
#define __attribute__(x)
#endif
/* snprintf et al */
#include <stdarg.h>
#if !defined(HAVE_SNPRINTF)
int snprintf (char *str, size_t sz, const char *format, ...)
#ifdef __ATTRIBUTE___FORMAT_OK
__attribute__((format (printf, 3, 4)))
#endif /* __ATTRIBUTE___FORMAT_OK */
;
#endif /* !defined(HAVE_SNPRINTF) */
#if !defined(HAVE_VSNPRINTF)
int vsnprintf (char *str, size_t sz, const char *format, va_list ap)
#ifdef __ATTRIBUTE___FORMAT_OK
__attribute__((format (printf, 3, 0)))
#endif /* __ATTRIBUTE___FORMAT_OK */
;
#endif /* !defined(HAVE_SNPRINTF) */
#ifndef HAVE_STRLCAT
extern size_t strlcat (char *, const char *, size_t);
#endif
#ifndef HAVE_STRLCPY
extern size_t strlcpy (char *, const char *, size_t);
#endif
#ifndef HAVE_STRDUP
extern char *strdup (const char *str);
#endif
#ifndef HAVE_STRSEP
extern char *strsep(char **, const char *);
#endif
struct tok {
int v; /* value */
const char *s; /* string */
};
#define TOKBUFSIZE 128
extern const char *tok2strbuf(const struct tok *, const char *, int,
char *buf, size_t bufsize);
/* tok2str is deprecated */
extern const char *tok2str(const struct tok *, const char *, int);
extern char *bittok2str(const struct tok *, const char *, int);
extern char *bittok2str_nosep(const struct tok *, const char *, int);
typedef struct netdissect_options netdissect_options;
struct netdissect_options {
int ndo_aflag; /* translate network and broadcast addresses */
int ndo_bflag; /* print 4 byte ASes in ASDOT notation */
int ndo_eflag; /* print ethernet header */
int ndo_fflag; /* don't translate "foreign" IP address */
int ndo_Kflag; /* don't check TCP checksums */
int ndo_nflag; /* leave addresses as numbers */
int ndo_Nflag; /* remove domains from printed host names */
int ndo_qflag; /* quick (shorter) output */
int ndo_Rflag; /* print sequence # field in AH/ESP*/
int ndo_sflag; /* use the libsmi to translate OIDs */
int ndo_Sflag; /* print raw TCP sequence numbers */
int ndo_tflag; /* print packet arrival time */
int ndo_Uflag; /* "unbuffered" output of dump files */
int ndo_uflag; /* Print undecoded NFS handles */
int ndo_vflag; /* verbose */
int ndo_xflag; /* print packet in hex */
int ndo_Xflag; /* print packet in hex/ascii */
int ndo_Aflag; /* print packet only in ascii observing TAB,
* LF, CR and SPACE as graphical chars
*/
int ndo_Bflag; /* buffer size */
int ndo_Iflag; /* rfmon (monitor) mode */
int ndo_Oflag; /* run filter code optimizer */
int ndo_dlt; /* if != -1, ask libpcap for the DLT it names*/
int ndo_jflag; /* packet time stamp source */
int ndo_pflag; /* don't go promiscuous */
int ndo_Cflag; /* rotate dump files after this many bytes */
int ndo_Cflag_count; /* Keep track of which file number we're writing */
int ndo_Gflag; /* rotate dump files after this many seconds */
int ndo_Gflag_count; /* number of files created with Gflag rotation */
time_t ndo_Gflag_time; /* The last time_t the dump file was rotated. */
int ndo_Wflag; /* recycle output files after this number of files */
int ndo_WflagChars;
int ndo_Hflag; /* dissect 802.11s draft mesh standard */
int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */
const char *ndo_dltname;
char *ndo_espsecret;
struct sa_list *ndo_sa_list_head; /* used by print-esp.c */
struct sa_list *ndo_sa_default;
char *ndo_sigsecret; /* Signature verification secret key */
struct esp_algorithm *ndo_espsecret_xform; /* cache of decoded */
char *ndo_espsecret_key;
int ndo_packettype; /* as specified by -T */
char *ndo_program_name; /*used to generate self-identifying messages */
int32_t ndo_thiszone; /* seconds offset from gmt to local time */
int ndo_snaplen;
/*global pointers to beginning and end of current packet (during printing) */
const u_char *ndo_packetp;
const u_char *ndo_snapend;
/* bookkeeping for ^T output */
int ndo_infodelay;
/* pointer to void function to output stuff */
void (*ndo_default_print)(netdissect_options *,
register const u_char *bp, register u_int length);
void (*ndo_info)(netdissect_options *, int verbose);
int (*ndo_printf)(netdissect_options *,
const char *fmt, ...)
#ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
__attribute__ ((format (printf, 2, 3)))
#endif
;
void (*ndo_error)(netdissect_options *,
const char *fmt, ...)
#ifdef __ATTRIBUTE___NORETURN_OK_FOR_FUNCTION_POINTERS
__attribute__ ((noreturn))
#endif /* __ATTRIBUTE___NORETURN_OK_FOR_FUNCTION_POINTERS */
#ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
__attribute__ ((format (printf, 2, 3)))
#endif /* __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS */
;
void (*ndo_warning)(netdissect_options *,
const char *fmt, ...)
#ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
__attribute__ ((format (printf, 2, 3)))
#endif
;
};
#define PT_VAT 1 /* Visual Audio Tool */
#define PT_WB 2 /* distributed White Board */
#define PT_RPC 3 /* Remote Procedure Call */
#define PT_RTP 4 /* Real-Time Applications protocol */
#define PT_RTCP 5 /* Real-Time Applications control protocol */
#define PT_SNMP 6 /* Simple Network Management Protocol */
#define PT_CNFP 7 /* Cisco NetFlow protocol */
#define PT_TFTP 8 /* trivial file transfer protocol */
#define PT_AODV 9 /* Ad-hoc On-demand Distance Vector Protocol */
#define PT_CARP 10 /* Common Address Redundancy Protocol */
#define PT_RADIUS 11 /* RADIUS authentication Protocol */
#define PT_ZMTP1 12 /* ZeroMQ Message Transport Protocol 1.0 */
#define PT_VXLAN 13 /* Virtual eXtensible Local Area Network */
#define PT_PGM 14 /* [UDP-encapsulated] Pragmatic General Multicast */
#define PT_PGM_ZMTP1 15 /* ZMTP/1.0 inside PGM (native or UDP-encapsulated) */
#define PT_LMP 16 /* Link Management Protocol */
#ifndef min
#define min(a,b) ((a)>(b)?(b):(a))
#endif
#ifndef max
#define max(a,b) ((b)>(a)?(b):(a))
#endif
/*
* Maximum snapshot length. This should be enough to capture the full
* packet on most network interfaces.
*
* XXX - could it be larger? If so, should it? Some applications might
* use the snapshot length in a savefile header to control the size of
* the buffer they allocate, so a size of, say, 2^31-1 might not work
* well.
*/
#define MAXIMUM_SNAPLEN 65535
/*
* The default snapshot length is the maximum.
*/
#define DEFAULT_SNAPLEN MAXIMUM_SNAPLEN
#define ESRC(ep) ((ep)->ether_shost)
#define EDST(ep) ((ep)->ether_dhost)
#ifndef NTOHL
#define NTOHL(x) (x) = ntohl(x)
#define NTOHS(x) (x) = ntohs(x)
#define HTONL(x) (x) = htonl(x)
#define HTONS(x) (x) = htons(x)
#endif
/*
* True if "l" bytes of "var" were captured.
*
* The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure
* "l" isn't so large that "ndo->ndo_snapend - (l)" underflows.
*
* The check is for <= rather than < because "l" might be 0.
*/
#define ND_TTEST2(var, l) (ndo->ndo_snapend - (l) <= ndo->ndo_snapend && \
(const u_char *)&(var) <= ndo->ndo_snapend - (l))
/* True if "var" was captured */
#define ND_TTEST(var) ND_TTEST2(var, sizeof(var))
/* Bail if "l" bytes of "var" were not captured */
#define ND_TCHECK2(var, l) if (!ND_TTEST2(var, l)) goto trunc
/* Bail if "var" was not captured */
#define ND_TCHECK(var) ND_TCHECK2(var, sizeof(var))
#define ND_PRINT(STUFF) (*ndo->ndo_printf)STUFF
#define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length)
#if 0
extern void ts_print(netdissect_options *ipdo,
const struct timeval *);
extern void relts_print(int);
#endif
extern int fn_print(const u_char *, const u_char *);
extern int fn_printn(const u_char *, u_int, const u_char *);
extern const char *tok2str(const struct tok *, const char *, int);
extern void wrapup(int);
#if 0
extern char *read_infile(netdissect_options *, char *);
extern char *copy_argv(netdissect_options *, char **);
#endif
/*
* Locale-independent macros for testing character properties and
* stripping the 8th bit from characters. Assumed to be handed
* a value between 0 and 255, i.e. don't hand them a char, as
* those might be in the range -128 to 127.
*/
#define ND_ISASCII(c) (!((c) & 0x80)) /* value is an ASCII code point */
#define ND_ISPRINT(c) ((c) >= 0x20 && (c) <= 0x7E)
#define ND_ISGRAPH(c) ((c) > 0x20 && (c) <= 0x7E)
#define ND_TOASCII(c) ((c) & 0x7F)
extern void safeputchar(int);
extern void safeputs(const char *, int);
#ifdef LBL_ALIGN
/*
* The processor doesn't natively handle unaligned loads,
* and the compiler might "helpfully" optimize memcpy()
* and memcmp(), when handed pointers that would normally
* be properly aligned, into sequences that assume proper
* alignment.
*
* Do copies and compares of possibly-unaligned data by
* calling routines that wrap memcpy() and memcmp(), to
* prevent that optimization.
*/
extern void unaligned_memcpy(void *, const void *, size_t);
extern int unaligned_memcmp(const void *, const void *, size_t);
#define UNALIGNED_MEMCPY(p, q, l) unaligned_memcpy((p), (q), (l))
#define UNALIGNED_MEMCMP(p, q, l) unaligned_memcmp((p), (q), (l))
#else
/*
* The procesor natively handles unaligned loads, so just use memcpy()
* and memcmp(), to enable those optimizations.
*/
#define UNALIGNED_MEMCPY(p, q, l) memcpy((p), (q), (l))
#define UNALIGNED_MEMCMP(p, q, l) memcmp((p), (q), (l))
#endif
#define PLURAL_SUFFIX(n) \
(((n) != 1) ? "s" : "")
#if 0
extern const char *isonsap_string(netdissect_options *, const u_char *);
extern const char *protoid_string(netdissect_options *, const u_char *);
extern const char *dnname_string(netdissect_options *, u_short);
extern const char *dnnum_string(netdissect_options *, u_short);
#endif
/* The printer routines. */
#include <pcap.h>
typedef u_int (*if_ndo_printer)(struct netdissect_options *ndo,
const struct pcap_pkthdr *, const u_char *);
typedef u_int (*if_printer)(const struct pcap_pkthdr *, const u_char *);
extern if_ndo_printer lookup_ndo_printer(int);
extern if_printer lookup_printer(int);
extern void eap_print(netdissect_options *,const u_char *, u_int);
extern int esp_print(netdissect_options *,
const u_char *bp, const int length, const u_char *bp2,
int *nhdr, int *padlen);
extern void arp_print(netdissect_options *,const u_char *, u_int, u_int);
extern void tipc_print(netdissect_options *, const u_char *, u_int, u_int);
extern void msnlb_print(netdissect_options *, const u_char *);
extern void icmp6_print(netdissect_options *ndo, const u_char *,
u_int, const u_char *, int);
extern void isakmp_print(netdissect_options *,const u_char *,
u_int, const u_char *);
extern void isakmp_rfc3948_print(netdissect_options *,const u_char *,
u_int, const u_char *);
extern void ip_print(netdissect_options *,const u_char *, u_int);
extern void ip_print_inner(netdissect_options *ndo,
const u_char *bp, u_int length, u_int nh,
const u_char *bp2);
extern void rrcp_print(netdissect_options *,const u_char *, u_int);
extern void loopback_print(netdissect_options *, const u_char *, const u_int);
extern void ether_print(netdissect_options *,
const u_char *, u_int, u_int,
void (*)(netdissect_options *, const u_char *),
const u_char *);
extern u_int ether_if_print(netdissect_options *,
const struct pcap_pkthdr *,const u_char *);
extern u_int netanalyzer_if_print(netdissect_options *,
const struct pcap_pkthdr *,const u_char *);
extern u_int netanalyzer_transparent_if_print(netdissect_options *,
const struct pcap_pkthdr *,
const u_char *);
extern int ethertype_print(netdissect_options *,u_short, const u_char *,
u_int, u_int);
extern int print_unknown_data(netdissect_options *,const u_char *, const char *,int);
extern void hex_print_with_offset(netdissect_options *, const char *ident, const u_char *cp,
u_int, u_int);
extern void hex_print(netdissect_options *,const char *ident, const u_char *cp,u_int);
/* stuff that has not yet been rototiled */
extern const u_char * ns_nprint (register const u_char *, register const u_char *);
#if 0
extern void ascii_print(netdissect_options *,u_int);
extern void hex_and_ascii_print_with_offset(netdissect_options *,const char *,
u_int, u_int);
extern void hex_and_ascii_print(netdissect_options *,const char *, u_int);
extern void telnet_print(netdissect_options *,const u_char *, u_int);
extern int llc_print(netdissect_options *,
const u_char *, u_int, u_int, const u_char *,
const u_char *, u_short *);
extern void aarp_print(netdissect_options *,const u_char *, u_int);
extern void atalk_print(netdissect_options *,const u_char *, u_int);
extern void atm_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
extern void bootp_print(netdissect_options *,const u_char *,
u_int, u_short, u_short);
extern void bgp_print(netdissect_options *,const u_char *, int);
extern void bxxp_print(netdissect_options *,const u_char *, u_int);
extern void chdlc_if_print(u_char *user, const struct pcap_pkthdr *h,
register const u_char *p);
extern void chdlc_print(netdissect_options *ndo,
register const u_char *p, u_int length, u_int caplen);
extern void cisco_autorp_print(netdissect_options *,
const u_char *, u_int);
extern void cnfp_print(netdissect_options *,const u_char *cp,
u_int len, const u_char *bp);
extern void decnet_print(netdissect_options *,const u_char *,
u_int, u_int);
extern void default_print(netdissect_options *,const u_char *, u_int);
extern void dvmrp_print(netdissect_options *,const u_char *, u_int);
extern void egp_print(netdissect_options *,const u_char *, u_int,
const u_char *);
extern void arcnet_if_print(u_char*,const struct pcap_pkthdr *,const u_char *);
extern void token_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
extern void fddi_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
extern void gre_print(netdissect_options *,const u_char *, u_int);
extern void icmp_print(netdissect_options *,const u_char *, u_int,
const u_char *);
extern void hsrp_print(netdissect_options *ndo,
register const u_char *bp, register u_int len);
extern void ieee802_11_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
extern void igmp_print(netdissect_options *,
register const u_char *, u_int);
extern void igrp_print(netdissect_options *,const u_char *, u_int,
const u_char *);
extern void ipN_print(netdissect_options *,const u_char *, u_int);
extern void ipx_print(netdissect_options *,const u_char *, u_int);
extern void isoclns_print(netdissect_options *,const u_char *,
u_int, u_int, const u_char *, const u_char *);
extern void krb_print(netdissect_options *,const u_char *, u_int);
extern void llap_print(netdissect_options *,const u_char *, u_int);
extern const char *linkaddr_string(netdissect_options *ndo,
const u_char *ep, const unsigned int len);
extern void ltalk_if_print(netdissect_options *ndo,
u_char *user, const struct pcap_pkthdr *h,
const u_char *p);
extern void mpls_print(netdissect_options *ndo,
const u_char *bp, u_int length);
extern void msdp_print(netdissect_options *ndo,
const unsigned char *sp, u_int length);
extern void nfsreply_print(netdissect_options *,const u_char *,
u_int, const u_char *);
extern void nfsreq_print(netdissect_options *,const u_char *,
u_int, const u_char *);
extern void ns_print(netdissect_options *,const u_char *, u_int);
extern void ntp_print(netdissect_options *,const u_char *, u_int);
extern void null_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
extern void ospf_print(netdissect_options *,const u_char *,
u_int, const u_char *);
extern void pimv1_print(netdissect_options *,const u_char *, u_int);
extern void mobile_print(netdissect_options *,const u_char *, u_int);
extern void pim_print(netdissect_options *,const u_char *, u_int, u_int);
extern void pppoe_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
extern void pppoe_print(netdissect_options *,const u_char *, u_int);
extern void ppp_print(netdissect_options *,
register const u_char *, u_int);
extern void ppp_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
extern void ppp_hdlc_if_print(u_char *,
const struct pcap_pkthdr *, const u_char *);
extern void ppp_bsdos_if_print(u_char *,
const struct pcap_pkthdr *, const u_char *);
extern int vjc_print(netdissect_options *,register const char *,
register u_int, u_short);
extern void raw_if_print(u_char *,
const struct pcap_pkthdr *, const u_char *);
extern void rip_print(netdissect_options *,const u_char *, u_int);
extern void rpki_rtr_print(netdissect_options *,const u_char *, u_int);
extern void sctp_print(netdissect_options *ndo,
const u_char *bp, const u_char *bp2,
u_int sctpPacketLength);
extern void sl_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
extern void lane_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
extern void cip_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
extern void sl_bsdos_if_print(u_char *,
const struct pcap_pkthdr *, const u_char *);
extern void sll_if_print(u_char *,
const struct pcap_pkthdr *, const u_char *);
extern void snmp_print(netdissect_options *,const u_char *, u_int);
extern void sunrpcrequest_print(netdissect_options *,const u_char *,
u_int, const u_char *);
extern void tcp_print(netdissect_options *,const u_char *, u_int,
const u_char *, int);
extern void tftp_print(netdissect_options *,const u_char *, u_int);
extern void timed_print(netdissect_options *,const u_char *, u_int);
extern void udp_print(netdissect_options *,const u_char *, u_int,
const u_char *, int);
extern void wb_print(netdissect_options *,const void *, u_int);
extern int ah_print(netdissect_options *,register const u_char *,
register const u_char *);
extern void esp_print_decodesecret(netdissect_options *ndo);
extern int ipcomp_print(netdissect_options *,register const u_char *,
register const u_char *, int *);
extern void rx_print(netdissect_options *,register const u_char *,
int, int, int, u_char *);
extern void netbeui_print(netdissect_options *,u_short,
const u_char *, int);
extern void ipx_netbios_print(netdissect_options *,const u_char *, u_int);
extern void nbt_tcp_print(netdissect_options *,const u_char *, int);
extern void nbt_udp137_print(netdissect_options *,
const u_char *data, int);
extern void nbt_udp138_print(netdissect_options *,
const u_char *data, int);
extern char *smb_errstr(netdissect_options *,int, int);
extern const char *nt_errstr(netdissect_options *, u_int32_t);
extern void print_data(netdissect_options *,const unsigned char *, int);
extern void l2tp_print(netdissect_options *,const u_char *, u_int);
extern void lcp_print(netdissect_options *,const u_char *, u_int);
extern void vrrp_print(netdissect_options *,const u_char *bp,
u_int len, int ttl);
extern void carp_print(netdissect_options *,const u_char *bp,
u_int len, int ttl);
extern void cdp_print(netdissect_options *,const u_char *,
u_int, u_int, const u_char *, const u_char *);
extern void stp_print(netdissect_options *,const u_char *p, u_int length);
extern void radius_print(netdissect_options *,const u_char *, u_int);
extern void lwres_print(netdissect_options *,const u_char *, u_int);
extern void pptp_print(netdissect_options *,const u_char *, u_int);
#endif
extern u_int ipnet_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *);
extern u_int ppi_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *);
extern u_int nflog_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *);
extern u_int ieee802_15_4_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *);
#ifdef INET6
extern void ip6_print(netdissect_options *,const u_char *, u_int);
#if 0
extern void ip6_opt_print(netdissect_options *,const u_char *, int);
extern int hbhopt_print(netdissect_options *,const u_char *);
extern int dstopt_print(netdissect_options *,const u_char *);
extern int frag6_print(netdissect_options *,const u_char *,
const u_char *);
extern void icmp6_print(netdissect_options *,const u_char *,
const u_char *);
extern void ripng_print(netdissect_options *,const u_char *, int);
extern int rt6_print(netdissect_options *,const u_char *, const u_char *);
extern void ospf6_print(netdissect_options *,const u_char *, u_int);
extern void dhcp6_print(netdissect_options *,const u_char *,
u_int, u_int16_t, u_int16_t);
extern void zephyr_print(netdissect_options * ndo,
const u_char *cp, int length);
#endif /* 0 */
#endif /*INET6*/
#if 0
struct cksum_vec {
const u_int8_t *ptr;
int len;
};
extern u_int16_t in_cksum(const struct cksum_vec *, int);
extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
#endif
extern void esp_print_decodesecret(netdissect_options *ndo);
extern int esp_print_decrypt_buffer_by_ikev2(netdissect_options *ndo,
int initiator,
u_char spii[8], u_char spir[8],
u_char *buf, u_char *end);
extern void geonet_print(netdissect_options *ndo,const u_char *eth_hdr,const u_char *geo_pck, u_int len);
extern void calm_fast_print(netdissect_options *ndo,const u_char *eth_hdr,const u_char *calm_pck, u_int len);
#endif /* netdissect_h */