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wireshark/packet.h

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/* packet.h
* Definitions for packet disassembly structures and routines
*
* $Id: packet.h,v 1.15 1998/10/14 04:28:47 gram 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__
/* 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)
/* Useful when highlighting regions inside a dissect_*() function. With this
* macro, you can highlight from the start of the packet to the end of the
* frame. See dissect_data() for an example.
*/
#define END_OF_FRAME (fd->cap_len - offset)
#define IEEE_802_3_MAX_LEN 1500
#define BYTE_VIEW_WIDTH 16
typedef struct _frame_data {
guint32 pkt_len; /* Packet length */
guint32 cap_len; /* Amount actually captured */
guint32 secs; /* Seconds */
guint32 usecs; /* Microseconds */
long file_off; /* File offset */
gchar *win_info[NUM_COLS]; /* Text for packet summary list fields */
} frame_data;
typedef struct _packet_info {
char *srcip;
int ip_src;
char *destip;
int ipproto;
int srcport;
int destport;
int iplen;
int iphdrlen;
} packet_info;
/* Struct for the match_strval function */
typedef struct _value_string {
guint32 value;
gchar *strptr;
} value_string;
/* Many of the structs and definitions below were taken from include files
* in the Linux distribution. */
/* ARP / RARP structs and definitions */
typedef struct _e_ether_arp {
guint16 ar_hrd;
guint16 ar_pro;
guint8 ar_hln;
guint8 ar_pln;
guint16 ar_op;
guint8 arp_sha[6];
guint8 arp_spa[4];
guint8 arp_tha[6];
guint8 arp_tpa[4];
} e_ether_arp;
#ifndef ARPOP_REQUEST
#define ARPOP_REQUEST 1 /* ARP request. */
#endif
#ifndef ARPOP_REPLY
#define ARPOP_REPLY 2 /* ARP reply. */
#endif
/* Some OSes have different names, or don't define these at all */
#ifndef ARPOP_RREQUEST
#define ARPOP_RREQUEST 3 /* RARP request. */
#endif
#ifndef ARPOP_RREPLY
#define ARPOP_RREPLY 4 /* RARP reply. */
#endif
/* ICMP structs and definitions */
typedef struct _e_icmp {
guint8 icmp_type;
guint8 icmp_code;
guint16 icmp_cksum;
union {
struct { /* Address mask request/reply */
guint16 id;
guint16 seq;
guint32 sn_mask;
} am;
struct { /* Timestap request/reply */
guint16 id;
guint16 seq;
guint32 orig;
guint32 recv;
guint32 xmit;
} ts;
guint32 zero; /* Unreachable */
} opt;
} e_icmp;
#define ICMP_ECHOREPLY 0
#define ICMP_UNREACH 3
#define ICMP_SOURCEQUENCH 4
#define ICMP_REDIRECT 5
#define ICMP_ECHO 8
#define ICMP_TIMXCEED 11
#define ICMP_PARAMPROB 12
#define ICMP_TSTAMP 13
#define ICMP_TSTAMPREPLY 14
#define ICMP_IREQ 15
#define ICMP_IREQREPLY 16
#define ICMP_MASKREQ 17
#define ICMP_MASKREPLY 18
/* IGMP structs and definitions */
typedef struct _e_igmp {
#if BYTE_ORDER == BIG_ENDIAN
guint8 igmp_v:4;
guint8 igmp_t:4;
#else /* Little endian */
guint8 igmp_t:4;
guint8 igmp_v:4;
#endif
guint8 igmp_unused;
guint16 igmp_cksum;
guint32 igmp_gaddr;
} e_igmp;
#define IGMP_M_QRY 0x01
#define IGMP_V1_M_RPT 0x02
#define IGMP_V2_LV_GRP 0x07
#define IGMP_DVMRP 0x03
#define IGMP_PIM 0x04
#define IGMP_V2_M_RPT 0x06
#define IGMP_MTRC_RESP 0x1e
#define IGMP_MTRC 0x1f
/* IP structs and definitions */
typedef struct _e_ip {
#if BYTE_ORDER == BIG_ENDIAN
guint8 ip_v:4;
guint8 ip_hl:4;
#else /* Little endian */
guint8 ip_hl:4;
guint8 ip_v:4;
#endif
guint8 ip_tos;
guint16 ip_len;
guint16 ip_id;
guint16 ip_off;
guint8 ip_ttl;
guint8 ip_p;
guint16 ip_sum;
guint32 ip_src;
guint32 ip_dst;
} e_ip;
/* IP flags. */
#define IP_CE 0x8000 /* Flag: "Congestion" */
#define IP_DF 0x4000 /* Flag: "Don't Fragment" */
#define IP_MF 0x2000 /* Flag: "More Fragments" */
#define IP_OFFSET 0x1FFF /* "Fragment Offset" part */
#define IPTOS_TOS_MASK 0x1E
#define IPTOS_TOS(tos) ((tos) & IPTOS_TOS_MASK)
#define IPTOS_NONE 0x00
#define IPTOS_LOWDELAY 0x10
#define IPTOS_THROUGHPUT 0x08
#define IPTOS_RELIABILITY 0x04
#define IPTOS_LOWCOST 0x02
#define IPTOS_PREC_MASK 0xE0
#define IPTOS_PREC(tos) ((tos)&IPTOS_PREC_MASK)
#define IPTOS_PREC_NETCONTROL 0xe0
#define IPTOS_PREC_INTERNETCONTROL 0xc0
#define IPTOS_PREC_CRITIC_ECP 0xa0
#define IPTOS_PREC_FLASHOVERRIDE 0x80
#define IPTOS_PREC_FLASH 0x60
#define IPTOS_PREC_IMMEDIATE 0x40
#define IPTOS_PREC_PRIORITY 0x20
#define IPTOS_PREC_ROUTINE 0x00
/* IP options */
#define IPOPT_COPY 0x80
#define IPOPT_CONTROL 0x00
#define IPOPT_RESERVED1 0x20
#define IPOPT_MEASUREMENT 0x40
#define IPOPT_RESERVED2 0x60
#define IPOPT_END (0 |IPOPT_CONTROL)
#define IPOPT_NOOP (1 |IPOPT_CONTROL)
#define IPOPT_SEC (2 |IPOPT_CONTROL|IPOPT_COPY)
#define IPOPT_LSRR (3 |IPOPT_CONTROL|IPOPT_COPY)
#define IPOPT_TIMESTAMP (4 |IPOPT_MEASUREMENT)
#define IPOPT_RR (7 |IPOPT_CONTROL)
#define IPOPT_SID (8 |IPOPT_CONTROL|IPOPT_COPY)
#define IPOPT_SSRR (9 |IPOPT_CONTROL|IPOPT_COPY)
#define IPOPT_RA (20|IPOPT_CONTROL|IPOPT_COPY)
/* IP option lengths */
#define IPOLEN_SEC 11
#define IPOLEN_LSRR_MIN 3
#define IPOLEN_TIMESTAMP_MIN 5
#define IPOLEN_RR_MIN 3
#define IPOLEN_SID 4
#define IPOLEN_SSRR_MIN 3
#define IPSEC_UNCLASSIFIED 0x0000
#define IPSEC_CONFIDENTIAL 0xF135
#define IPSEC_EFTO 0x789A
#define IPSEC_MMMM 0xBC4D
#define IPSEC_RESTRICTED 0xAF13
#define IPSEC_SECRET 0xD788
#define IPSEC_TOPSECRET 0x6BC5
#define IPSEC_RESERVED1 0x35E2
#define IPSEC_RESERVED2 0x9AF1
#define IPSEC_RESERVED3 0x4D78
#define IPSEC_RESERVED4 0x24BD
#define IPSEC_RESERVED5 0x135E
#define IPSEC_RESERVED6 0x89AF
#define IPSEC_RESERVED7 0xC4D6
#define IPSEC_RESERVED8 0xE26B
#define IPOPT_TS_TSONLY 0 /* timestamps only */
#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
#define IPOPT_TS_PRESPEC 3 /* specified modules only */
#define IP_PROTO_ICMP 1
#define IP_PROTO_IGMP 2
#define IP_PROTO_TCP 6
#define IP_PROTO_UDP 17
#define IP_PROTO_OSPF 89
/* Null/loopback structs and definitions */
typedef struct _e_nullhdr {
guint8 null_next;
guint8 null_len;
guint16 null_family;
} e_nullhdr;
/* PPP structs and definitions */
typedef struct _e_ppphdr {
guint8 ppp_addr;
guint8 ppp_ctl;
guint16 ppp_prot;
} e_ppphdr;
/* TCP structs and definitions */
typedef struct _e_tcphdr {
guint16 th_sport;
guint16 th_dport;
guint32 th_seq;
guint32 th_ack;
#if BYTE_ORDER == LITTLE_ENDIAN
guint8 th_x2:4;
guint8 th_off:4;
#else
guint8 th_off:4;
guint8 th_x2:4;
#endif
guint8 th_flags;
#define TH_FIN 0x01
#define TH_SYN 0x02
#define TH_RST 0x04
#define TH_PUSH 0x08
#define TH_ACK 0x10
#define TH_URG 0x20
guint16 th_win;
guint16 th_sum;
guint16 th_urp;
} e_tcphdr;
/*
* TCP option
*/
#define TCPOPT_NOP 1 /* Padding */
#define TCPOPT_EOL 0 /* End of options */
#define TCPOPT_MSS 2 /* Segment size negotiating */
#define TCPOPT_WINDOW 3 /* Window scaling */
#define TCPOPT_SACK_PERM 4 /* SACK Permitted */
#define TCPOPT_SACK 5 /* SACK Block */
#define TCPOPT_ECHO 6
#define TCPOPT_ECHOREPLY 7
#define TCPOPT_TIMESTAMP 8 /* Better RTT estimations/PAWS */
#define TCPOPT_CC 11
#define TCPOPT_CCNEW 12
#define TCPOPT_CCECHO 13
/*
* TCP option lengths
*/
#define TCPOLEN_MSS 4
#define TCPOLEN_WINDOW 3
#define TCPOLEN_SACK_PERM 2
#define TCPOLEN_SACK_MIN 2
#define TCPOLEN_ECHO 6
#define TCPOLEN_ECHOREPLY 6
#define TCPOLEN_TIMESTAMP 10
#define TCPOLEN_CC 6
#define TCPOLEN_CCNEW 6
#define TCPOLEN_CCECHO 6
/* UDP structs and definitions */
typedef struct _e_udphdr {
guint16 uh_sport;
guint16 uh_dport;
guint16 uh_ulen;
guint16 uh_sum;
} e_udphdr;
/* UDP Ports -> should go in packet-udp.h */
#define UDP_PORT_DNS 53
#define UDP_PORT_BOOTPS 67
#define UDP_PORT_IPX 213
#define UDP_PORT_NBNS 137
#define UDP_PORT_RIP 520
/* TCP Ports */
#define TCP_PORT_PRINTER 515
/* Tree types. Each dissect_* routine should have one for each
add_subtree() call. */
enum {
ETT_FRAME,
ETT_IEEE8023,
ETT_ETHER2,
ETT_LLC,
ETT_TOKEN_RING,
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_UDP,
ETT_TCP,
ETT_TCP_OPTIONS,
ETT_TCP_OPTION_SACK,
ETT_ICMP,
ETT_IGMP,
ETT_IPX,
ETT_SPX,
ETT_NCP,
ETT_DNS,
ETT_DNS_ANS,
ETT_DNS_QRY,
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_BOOTP,
ETT_BOOTP_OPTION,
ETT_IPv6,
ETT_CLNP,
ETT_COTP,
ETT_VINES,
ETT_VSPP,
ETT_IPXRIP,
ETT_IPXSAP,
ETT_IPXSAP_SERVER,
ETT_NBNS,
ETT_NBIPX,
NUM_TREE_TYPES /* last item number plus one */
};
/* The version of pcap.h that comes with some systems is missing these
* #defines.
*/
#ifndef DLT_RAW
#define DLT_RAW 12
#endif
#ifndef DLT_SLIP_BSDOS
#define DLT_SLIP_BSDOS 13
#endif
#ifndef DLT_PPP_BSDOS
#define DLT_PPP_BSDOS 14
#endif
typedef enum {
NO_LENGTH, /* option has no data, hence no length */
FIXED_LENGTH, /* option always has the same length */
VARIABLE_LENGTH /* option is variable-length - optlen is minimum */
} opt_len_type;
/* Member of table of IP or TCP options. */
typedef struct {
int optcode; /* code for option */
char *name; /* name of option */
opt_len_type len_type; /* type of option length field */
int optlen; /* value length should be (minimum if VARIABLE) */
void (*dissect)(GtkWidget *, const char *, const u_char *, int, guint);
/* routine to dissect option */
} ip_tcp_opt;
/* Routine to dissect IP or TCP options. */
void dissect_ip_tcp_options(GtkWidget *, const u_char *, int, guint,
ip_tcp_opt *, int, int);
/* Utility routines used by packet*.c */
gchar* ether_to_str(guint8 *);
gchar* ip_to_str(guint8 *);
void packet_hex_print(GtkText *, guint8 *, gint, gint, gint);
#define E_TREEINFO_START_KEY "tree_info_start"
#define E_TREEINFO_LEN_KEY "tree_info_len"
#if __GNUC__ == 2
GtkWidget* add_item_to_tree(GtkWidget *, gint, gint, gchar *, ...)
__attribute__((format (printf, 4, 5)));
#else
GtkWidget* add_item_to_tree(GtkWidget *, gint, gint, gchar *, ...);
#endif
gchar* match_strval(guint32, value_string*, gint);
/* Routines in packet.c */
void dissect_packet(const u_char *, guint32 ts_secs, guint32 ts_usecs,
frame_data *, GtkTree *);
void add_subtree(GtkWidget *, GtkWidget*, gint);
void expand_tree(GtkWidget *, gpointer);
void collapse_tree(GtkWidget *, gpointer);
/*
* Routines in packet-*.c
* Routines should take three args: packet data *, frame_data *, tree *
* They should never modify the packet data.
*/
void dissect_eth(const u_char *, frame_data *, GtkTree *);
void dissect_fddi(const u_char *, frame_data *, GtkTree *);
void dissect_null(const u_char *, frame_data *, GtkTree *);
void dissect_ppp(const u_char *, frame_data *, GtkTree *);
void dissect_raw(const u_char *, frame_data *, GtkTree *);
void dissect_tr(const u_char *, frame_data *, GtkTree *);
/*
* Routines in packet-*.c
* Routines should take four args: packet data *, offset, frame_data *,
* tree *
* They should never modify the packet data.
*/
void dissect_arp(const u_char *, int, frame_data *, GtkTree *);
void dissect_bootp(const u_char *, int, frame_data *, GtkTree *);
void dissect_data(const u_char *, int, frame_data *, GtkTree *);
void dissect_dns(const u_char *, int, frame_data *, GtkTree *);
void dissect_icmp(const u_char *, int, frame_data *, GtkTree *);
void dissect_igmp(const u_char *, int, frame_data *, GtkTree *);
void dissect_ip(const u_char *, int, frame_data *, GtkTree *);
void dissect_ipv6(const u_char *, int, frame_data *, GtkTree *);
void dissect_ipx(const u_char *, int, frame_data *, GtkTree *);
void dissect_llc(const u_char *, int, frame_data *, GtkTree *);
void dissect_lpd(const u_char *, int, frame_data *, GtkTree *);
void dissect_nbipx_ns(const u_char *, int, frame_data *, GtkTree *);
void dissect_nbns(const u_char *, int, frame_data *, GtkTree *);
void dissect_ncp(const u_char *, int, frame_data *, GtkTree *);
void dissect_osi(const u_char *, int, frame_data *, GtkTree *);
void dissect_ospf(const u_char *, int, frame_data *, GtkTree *);
void dissect_ospf_hello(const u_char *, int, frame_data *, GtkTree *);
void dissect_rip(const u_char *, int, frame_data *, GtkTree *);
void dissect_tcp(const u_char *, int, frame_data *, GtkTree *);
void dissect_trmac(const u_char *, int, frame_data *, GtkTree *);
void dissect_udp(const u_char *, int, frame_data *, GtkTree *);
void dissect_vines(const u_char *, int, frame_data *, GtkTree *);
void dissect_vspp(const u_char *, int, frame_data *, GtkTree *);
/* This function is in ethertype.c */
void ethertype(guint16 etype, int offset,
const u_char *pd, frame_data *fd, GtkTree *tree,
GtkWidget *fh_tree);
#endif /* packet.h */
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