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wireshark/packet.h
Guy Harris cde9b4699c Add in a bunch of changes based on the IBM specification for the NetBIOS 
Frame protocol (that being what this dissects).

If you're cutting up something into bitfields, the bitfield dissection
returned by "dissect_bitfield_XXX()" should be the first text on the
line - if not, then if the text items that come before the various
bitfields aren't all the same length, the bits don't line up.

Cope with packets from one of Gilbert's captures, where the sender
"name" in some NBF datagrams isn't a NetBIOS name, it's 10 octets of 0
followed by a MAC address!

The "name type" in the "Data2" field of NBF frames is 0x00 for unique
names and 0x01 for group names, not a "16th character of a NetBIOS name"
name type.

Fix up various other things.

svn path=/trunk/; revision=633
1999-09-03 07:20:15 +00:00

547 lines
18 KiB
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/* packet.h
* Definitions for packet disassembly structures and routines
*
* $Id: packet.h,v 1.94 1999/09/03 07:20:14 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.org>
* Copyright 1998 Gerald Combs
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __PACKET_H__
#define __PACKET_H__
#ifndef __WTAP_H__
#include "wiretap/wtap.h"
#endif
#ifndef __PROTO_H__
#include "proto.h"
#endif
/* Pointer versions of ntohs and ntohl. Given a pointer to a member of a
* byte array, returns the value of the two or four bytes at the pointer.
* The pletoh[sl] versions return the little-endian representation.
*/
#define pntohs(p) ((guint16) \
((guint16)*((guint8 *)p+0)<<8| \
(guint16)*((guint8 *)p+1)<<0))
#define pntohl(p) ((guint32)*((guint8 *)p+0)<<24| \
(guint32)*((guint8 *)p+1)<<16| \
(guint32)*((guint8 *)p+2)<<8| \
(guint32)*((guint8 *)p+3)<<0)
#define pletohs(p) ((guint16) \
((guint16)*((guint8 *)p+1)<<8| \
(guint16)*((guint8 *)p+0)<<0))
#define pletohl(p) ((guint32)*((guint8 *)p+3)<<24| \
(guint32)*((guint8 *)p+2)<<16| \
(guint32)*((guint8 *)p+1)<<8| \
(guint32)*((guint8 *)p+0)<<0)
#define hi_nibble(b) ((b & 0xf0) >> 4)
#define lo_nibble(b) (b & 0x0f)
/* Byte ordering */
#ifndef BYTE_ORDER
#define LITTLE_ENDIAN 4321
#define BIG_ENDIAN 1234
#ifdef WORDS_BIGENDIAN
#define BYTE_ORDER BIG_ENDIAN
#else
#define BYTE_ORDER LITTLE_ENDIAN
#endif
#endif
/* Useful when you have an array whose size you can tell at compile-time */
#define array_length(x) (sizeof x / sizeof x[0])
/* Useful when highlighting regions inside a dissect_*() function. With this
* macro, you can highlight from an arbitrary offset to the end of the
* packet (which may come before the end of the frame).
* See dissect_data() for an example.
*/
#define END_OF_FRAME (pi.captured_len - offset)
/* To pass one of two strings, singular or plural */
#define plurality(d,s,p) ((d) == 1 ? (s) : (p))
typedef struct _column_info {
gint num_cols; /* Number of columns */
gint *col_fmt; /* Format of column */
gboolean **fmt_matx; /* Specifies which formats apply to a column */
gint *col_width; /* Column widths to use during a "-S" capture */
gchar **col_data; /* Column data */
} column_info;
#define COL_MAX_LEN 256
typedef struct _packet_counts {
gint tcp;
gint udp;
gint icmp;
gint ospf;
gint gre;
gint netbios;
gint other;
gint total;
} packet_counts;
typedef struct _frame_data {
struct _frame_data *next; /* Next element in list */
guint32 pkt_len; /* Packet length */
guint32 cap_len; /* Amount actually captured */
guint32 rel_secs; /* Relative seconds */
guint32 rel_usecs; /* Relative microseconds */
guint32 abs_secs; /* Absolute seconds */
guint32 abs_usecs; /* Absolute microseconds */
guint32 del_secs; /* Delta seconds */
guint32 del_usecs; /* Delta microseconds */
long file_off; /* File offset */
column_info *cinfo; /* Column formatting information */
gint row; /* Row number for this packet in the display */
int lnk_t; /* Per-packet encapsulation/data-link type */
gboolean passed_dfilter; /* TRUE = display, FALSE = no display */
union pseudo_header pseudo_header; /* "pseudo-header" from wiretap */
} frame_data;
typedef struct _packet_info {
int len;
int captured_len;
guint32 ip_src;
guint32 ip_dst;
guint32 ipproto;
guint32 srcport;
guint32 destport;
guint32 match_port;
int iplen;
int iphdrlen;
} packet_info;
extern packet_info pi;
/* Struct for the match_strval function */
typedef struct _value_string {
guint32 value;
gchar *strptr;
} value_string;
/* Many of the structs and definitions below and in packet-*.c files
* were taken from include files in the Linux distribution. */
typedef struct tcp_extra_data {
int match_port;
int sport;
int dport;
} tcp_extra_data;
/* Tree types. Each dissect_* routine should have one for each
add_subtree() call. */
enum {
ETT_NONE,
ETT_FRAME,
ETT_IEEE8023,
ETT_ETHER2,
ETT_LLC,
ETT_TOKEN_RING,
ETT_TOKEN_RING_AC,
ETT_TOKEN_RING_FC,
ETT_TR_IERR_CNT,
ETT_TR_NERR_CNT,
ETT_TR_MAC,
ETT_PPP,
ETT_ARP,
ETT_FDDI,
ETT_NULL,
ETT_IP,
ETT_IP_OPTIONS,
ETT_IP_OPTION_SEC,
ETT_IP_OPTION_ROUTE,
ETT_IP_OPTION_TIMESTAMP,
ETT_IP_TOS,
ETT_IP_OFF,
ETT_UDP,
ETT_TCP,
ETT_TCP_OPTIONS,
ETT_TCP_OPTION_SACK,
ETT_TCP_FLAGS,
ETT_ICMP,
ETT_IGMP,
ETT_IPX,
ETT_SPX,
ETT_NCP,
ETT_NCP_REQUEST_FIELDS,
ETT_NCP_REPLY_FIELDS,
ETT_DNS,
ETT_DNS_FLAGS,
ETT_DNS_QRY,
ETT_DNS_QD,
ETT_DNS_ANS,
ETT_DNS_RR,
ETT_ISAKMP,
ETT_ISAKMP_FLAGS,
ETT_ISAKMP_PAYLOAD,
ETT_RIP,
ETT_RIP_VEC,
ETT_OSPF,
ETT_OSPF_HDR,
ETT_OSPF_HELLO,
ETT_OSPF_DESC,
ETT_OSPF_LSR,
ETT_OSPF_LSA_UPD,
ETT_OSPF_LSA,
ETT_LPD,
ETT_RAW,
ETT_CLIP,
ETT_BOOTP,
ETT_BOOTP_OPTION,
ETT_IPv6,
ETT_CLNP,
ETT_COTP,
ETT_VINES_FRP,
ETT_VINES,
ETT_VINES_ARP,
ETT_VINES_ICP,
ETT_VINES_IPC,
ETT_VINES_RTP,
ETT_VINES_SPP,
ETT_IPXRIP,
ETT_IPXSAP,
ETT_IPXSAP_SERVER,
ETT_NBNS,
ETT_NBNS_FLAGS,
ETT_NBNS_NB_FLAGS,
ETT_NBNS_NAME_FLAGS,
ETT_NBNS_QRY,
ETT_NBNS_QD,
ETT_NETB,
ETT_NETB_FLAGS,
ETT_NETB_STATUS,
ETT_NETB_NAME,
ETT_NBNS_ANS,
ETT_NBNS_RR,
ETT_NBIPX,
ETT_NBIPX_NAME_TYPE_FLAGS,
ETT_AARP,
ETT_GIOP,
ETT_NBDGM,
ETT_CDP,
ETT_CDP_TLV,
ETT_HTTP,
ETT_TFTP,
ETT_AH,
ETT_ESP,
ETT_ICMPv6,
ETT_ICMPv6OPT,
ETT_ICMPv6FLAG,
ETT_POP,
ETT_FTP,
ETT_TELNET,
ETT_TELNET_SUBOPT,
ETT_NNTP,
ETT_SNMP,
ETT_NBSS,
ETT_NBSS_FLAGS,
ETT_SMB,
ETT_SMB_FLAGS,
ETT_SMB_FLAGS2,
ETT_SMB_DIALECTS,
ETT_SMB_MODE,
ETT_SMB_CAPABILITIES,
ETT_SMB_RAWMODE,
ETT_SMB_AFLAGS,
ETT_SMB_DESIREDACCESS,
ETT_SMB_SEARCH,
ETT_SMB_FILE,
ETT_SMB_OPENFUNCTION,
ETT_SMB_FILEATTRIBUTES,
ETT_SMB_FILETYPE,
ETT_SMB_ACTION,
ETT_PPTP,
ETT_GRE,
ETT_GRE_FLAGS,
ETT_PPPOED,
ETT_PPPOED_TAGS,
ETT_PPPOES,
ETT_LCP,
ETT_LCP_OPTIONS,
ETT_LCP_MRU_OPT,
ETT_LCP_ASYNC_MAP_OPT,
ETT_LCP_AUTHPROT_OPT,
ETT_LCP_QUALPROT_OPT,
ETT_LCP_MAGICNUM_OPT,
ETT_LCP_FCS_ALTERNATIVES_OPT,
ETT_LCP_NUMBERED_MODE_OPT,
ETT_LCP_CALLBACK_OPT,
ETT_LCP_MULTILINK_EP_DISC_OPT,
ETT_LCP_INTERNATIONALIZATION_OPT,
ETT_IPCP,
ETT_IPCP_OPTIONS,
ETT_IPCP_IPADDRS_OPT,
ETT_IPCP_COMPRESSPROT_OPT,
ETT_RSVP,
ETT_RSVP_UNKNOWN_CLASS,
ETT_RSVP_HDR,
ETT_RSVP_SESSION,
ETT_RSVP_SGROUP,
ETT_RSVP_HOP,
ETT_RSVP_INTEGRITY,
ETT_RSVP_TIME_VALUES,
ETT_RSVP_ERROR,
ETT_RSVP_SCOPE,
ETT_RSVP_STYLE,
ETT_RSVP_FLOWSPEC,
ETT_RSVP_FILTER_SPEC,
ETT_RSVP_SENDER_TEMPLATE,
ETT_RSVP_SENDER_TSPEC,
ETT_RSVP_ADSPEC,
ETT_RSVP_POLICY,
ETT_RSVP_CONFIRM,
ETT_RSVP_ADSPEC_SUBTREE1,
ETT_RSVP_ADSPEC_SUBTREE2,
ETT_RSVP_ADSPEC_SUBTREE3,
ETT_RTSP,
ETT_SDP,
ETT_RADIUS,
ETT_RADIUS_AVP,
ETT_LAPB,
ETT_X25,
ETT_XDLC_CONTROL,
ETT_ATM,
ETT_ATM_LANE,
ETT_ATM_LANE_LC_FLAGS,
ETT_ATM_LANE_LC_LAN_DEST,
ETT_ATM_LANE_LC_LAN_DEST_RD,
NUM_TREE_TYPES /* last item number plus one */
};
/* Utility routines used by packet*.c */
gchar* ether_to_str(const guint8 *);
gchar* ip_to_str(const guint8 *);
gchar* abs_time_to_str(struct timeval*);
gchar* time_secs_to_str(guint32);
gchar* bytes_to_str(const guint8 *, int);
const u_char *find_line_end(const u_char *data, const u_char *dataend,
const u_char **eol);
int get_token_len(const u_char *linep, const u_char *lineend,
const u_char **next_token);
gchar* format_text(const u_char *line, int len);
gchar* val_to_str(guint32, const value_string *, const char *);
gchar* match_strval(guint32, const value_string*);
const char *decode_boolean_bitfield(guint32 val, guint32 mask, int width,
const char *truedesc, const char *falsedesc);
const char *decode_enumerated_bitfield(guint32 val, guint32 mask, int width,
const value_string *tab, const char *fmt);
const char *decode_numeric_bitfield(guint32 val, guint32 mask, int width,
const char *fmt);
gint check_col(frame_data *, gint);
#if __GNUC__ == 2
void col_add_fstr(frame_data *, gint, gchar *, ...)
__attribute__((format (printf, 3, 4)));
void col_append_fstr(frame_data *, gint, gchar *, ...)
__attribute__((format (printf, 3, 4)));
#else
void col_add_fstr(frame_data *, gint, gchar *, ...);
void col_append_fstr(frame_data *, gint, gchar *, ...);
#endif
void col_add_str(frame_data *, gint, const gchar *);
void col_append_str(frame_data *, gint, gchar *);
void dissect_packet(const u_char *, frame_data *, proto_tree *);
/*
* Routines in packet-*.c
* Routines should take three args: packet data *, cap_len, packet_counts *
* They should never modify the packet data.
*/
void capture_clip(const u_char *, guint32, packet_counts *);
void capture_eth(const u_char *, guint32, packet_counts *);
void capture_fddi(const u_char *, guint32, packet_counts *);
void capture_null(const u_char *, guint32, packet_counts *);
void capture_ppp(const u_char *, guint32, packet_counts *);
void capture_raw(const u_char *, guint32, packet_counts *);
void capture_tr(const u_char *, guint32, packet_counts *);
/*
* Routines in packet-*.c
* Routines should take four args: packet data *, offset, cap_len,
* packet_counts *
* They should never modify the packet data.
*/
void capture_netbios(const u_char *, int, guint32, packet_counts *);
void capture_llc(const u_char *, int, guint32, packet_counts *);
void capture_ip(const u_char *, int, guint32, packet_counts *);
/*
* Routines in packet-*.c
* Routines should take three args: packet data *, frame_data *, tree *
* They should never modify the packet data.
*/
void dissect_atm(const u_char *, frame_data *, proto_tree *);
void dissect_clip(const u_char *, frame_data *, proto_tree *);
void dissect_lapb(const u_char *, frame_data *, proto_tree *);
void dissect_null(const u_char *, frame_data *, proto_tree *);
void dissect_ppp(const u_char *, frame_data *, proto_tree *);
void dissect_raw(const u_char *, frame_data *, proto_tree *);
/*
* Routines in packet-*.c
* Routines should take four args: packet data *, frame_data *, tree *,
* gboolean
* They should never modify the packet data.
*/
void dissect_fddi(const u_char *, frame_data *, proto_tree *, gboolean);
/*
* Routines in packet-*.c
* Routines should take four args: packet data *, offset, frame_data *,
* tree *
* They should never modify the packet data.
*/
int dissect_ah(const u_char *, int, frame_data *, proto_tree *);
void dissect_aarp(const u_char *, int, frame_data *, proto_tree *);
void dissect_arp(const u_char *, int, frame_data *, proto_tree *);
void dissect_bootp(const u_char *, int, frame_data *, proto_tree *);
void dissect_cdp(const u_char *, int, frame_data *, proto_tree *);
void dissect_cotp(const u_char *, int, frame_data *, proto_tree *);
void dissect_data(const u_char *, int, frame_data *, proto_tree *);
void dissect_ddp(const u_char *, int, frame_data *, proto_tree *);
void dissect_dns(const u_char *, int, frame_data *, proto_tree *);
void dissect_esp(const u_char *, int, frame_data *, proto_tree *);
void dissect_eth(const u_char *, int, frame_data *, proto_tree *);
void dissect_ftp(const u_char *, int, frame_data *, proto_tree *);
void dissect_ftpdata(const u_char *, int, frame_data *, proto_tree *);
void dissect_giop(const u_char *, int, frame_data *, proto_tree *);
void dissect_http(const u_char *, int, frame_data *, proto_tree *);
void dissect_icmp(const u_char *, int, frame_data *, proto_tree *);
void dissect_icmpv6(const u_char *, int, frame_data *, proto_tree *);
void dissect_igmp(const u_char *, int, frame_data *, proto_tree *);
void dissect_ip(const u_char *, int, frame_data *, proto_tree *);
void dissect_ipv6(const u_char *, int, frame_data *, proto_tree *);
void dissect_ipx(const u_char *, int, frame_data *, proto_tree *);
void dissect_llc(const u_char *, int, frame_data *, proto_tree *);
void dissect_lpd(const u_char *, int, frame_data *, proto_tree *);
void dissect_nbdgm(const u_char *, int, frame_data *, proto_tree *);
void dissect_netbios(const u_char *, int, frame_data *, proto_tree *);
void dissect_nbipx(const u_char *, int, frame_data *, proto_tree *);
void dissect_nbns(const u_char *, int, frame_data *, proto_tree *);
void dissect_nbss(const u_char *, int, frame_data *, proto_tree *);
void dissect_ncp(const u_char *, int, frame_data *, proto_tree *);
void dissect_nntp(const u_char *, int, frame_data *, proto_tree *);
void dissect_nwlink_dg(const u_char *, int, frame_data *, proto_tree *);
void dissect_osi(const u_char *, int, frame_data *, proto_tree *);
void dissect_ospf(const u_char *, int, frame_data *, proto_tree *);
void dissect_ospf_hello(const u_char *, int, frame_data *, proto_tree *);
void dissect_pop(const u_char *, int, frame_data *, proto_tree *);
void dissect_pppoed(const u_char *, int, frame_data *, proto_tree *);
void dissect_pppoes(const u_char *, int, frame_data *, proto_tree *);
void dissect_isakmp(const u_char *, int, frame_data *, proto_tree *);
void dissect_radius(const u_char *, int, frame_data *, proto_tree *);
void dissect_rip(const u_char *, int, frame_data *, proto_tree *);
void dissect_rsvp(const u_char *, int, frame_data *, proto_tree *);
void dissect_rtsp(const u_char *, int, frame_data *, proto_tree *);
void dissect_sdp(const u_char *, int, frame_data *, proto_tree *);
void dissect_snmp(const u_char *, int, frame_data *, proto_tree *);
void dissect_tcp(const u_char *, int, frame_data *, proto_tree *);
void dissect_telnet(const u_char *, int, frame_data *, proto_tree *);
void dissect_tftp(const u_char *, int, frame_data *, proto_tree *);
void dissect_tr(const u_char *, int, frame_data *, proto_tree *);
void dissect_trmac(const u_char *, int, frame_data *, proto_tree *);
void dissect_udp(const u_char *, int, frame_data *, proto_tree *);
void dissect_vines(const u_char *, int, frame_data *, proto_tree *);
void dissect_vines_arp(const u_char *, int, frame_data *, proto_tree *);
void dissect_vines_frp(const u_char *, int, frame_data *, proto_tree *);
void dissect_vines_icp(const u_char *, int, frame_data *, proto_tree *);
void dissect_vines_ipc(const u_char *, int, frame_data *, proto_tree *);
void dissect_vines_rtp(const u_char *, int, frame_data *, proto_tree *);
void dissect_vines_spp(const u_char *, int, frame_data *, proto_tree *);
void dissect_payload_ppp(const u_char *, int, frame_data *, proto_tree *);
void dissect_x25(const u_char *, int, frame_data *, proto_tree *);
void dissect_smb(const u_char *, int, frame_data *, proto_tree *, int);
void dissect_pptp(const u_char *, int, frame_data *, proto_tree *);
void dissect_gre(const u_char *, int, frame_data *, proto_tree *);
void init_dissect_udp(void);
void init_dissect_x25(void);
/* These functions are in ethertype.c */
void capture_ethertype(guint16 etype, int offset,
const u_char *pd, guint32 cap_len, packet_counts *ld);
void ethertype(guint16 etype, int offset,
const u_char *pd, frame_data *fd, proto_tree *tree,
proto_tree *fh_tree, int item_id);
extern const value_string etype_vals[];
/* These functions are in packet-arp.c */
gchar *arphrdaddr_to_str(guint8 *ad, int ad_len, guint16 type);
gchar *arphrdtype_to_str(guint16 hwtype, const char *fmt);
/*
* All of the possible columns in summary listing.
*
* NOTE: The SRC and DST entries MUST remain in this order, or else you
* need to fix the offset #defines before get_column_format!
*/
enum {
COL_NUMBER, /* Packet list item number */
COL_CLS_TIME, /* Command line-specified time (default relative) */
COL_REL_TIME, /* Relative time */
COL_ABS_TIME, /* Absolute time */
COL_DELTA_TIME, /* Delta time */
COL_DEF_SRC, /* Source address */
COL_RES_SRC, /* Resolved source */
COL_UNRES_SRC, /* Unresolved source */
COL_DEF_DL_SRC, /* Data link layer source address */
COL_RES_DL_SRC, /* Resolved DL source */
COL_UNRES_DL_SRC, /* Unresolved DL source */
COL_DEF_NET_SRC, /* Network layer source address */
COL_RES_NET_SRC, /* Resolved net source */
COL_UNRES_NET_SRC, /* Unresolved net source */
COL_DEF_DST, /* Destination address */
COL_RES_DST, /* Resolved dest */
COL_UNRES_DST, /* Unresolved dest */
COL_DEF_DL_DST, /* Data link layer dest address */
COL_RES_DL_DST, /* Resolved DL dest */
COL_UNRES_DL_DST, /* Unresolved DL dest */
COL_DEF_NET_DST, /* Network layer dest address */
COL_RES_NET_DST, /* Resolved net dest */
COL_UNRES_NET_DST, /* Unresolved net dest */
COL_DEF_SRC_PORT, /* Source port */
COL_RES_SRC_PORT, /* Resolved source port */
COL_UNRES_SRC_PORT, /* Unresolved source port */
COL_DEF_DST_PORT, /* Destination port */
COL_RES_DST_PORT, /* Resolved dest port */
COL_UNRES_DST_PORT, /* Unresolved dest port */
COL_PROTOCOL, /* Protocol */
COL_INFO, /* Description */
COL_PACKET_LENGTH, /* Packet length in bytes */
NUM_COL_FMTS /* Should always be last */
};
#endif /* packet.h */
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