wireshark/packet.h

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/* packet.h
* Definitions for packet disassembly structures and routines
*
* $Id: packet.h,v 1.143 1999/11/17 02:17:07 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)
/* 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)
/* Check whether the "len" bytes of data starting at "offset" is
* entirely inside the captured data for this packet. */
#define BYTES_ARE_IN_FRAME(offset, len) ((offset) + (len) <= pi.captured_len)
/* Check whether there's any data at all starting at "offset". */
#define IS_DATA_IN_FRAME(offset) ((offset) < pi.captured_len)
/* 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_title; /* Column titles */
gchar **col_data; /* Column data */
} column_info;
#define COL_MAX_LEN 256
#define COL_MAX_INFO_LEN 4096
typedef struct _packet_counts {
gint tcp;
gint udp;
gint icmp;
gint ospf;
gint gre;
gint netbios;
gint other;
gint total;
} packet_counts;
Generalize the "ip_src" and "ip_dst" members of the "packet_info" structure to "dl_src"/"dl_dst", "net_src"/"net_dst", and "src"/"dst" addresses, where an address is an address type, an address length in bytes, and a pointer to that many bytes. "dl_{src,dst}" are the link-layer source/destination; "net_{src,dst}" are the network-layer source/destination; "{src,dst}" are the source/destination from the highest of those two layers that we have in the packet. Add a port type to "packet_info" as well, specifying whether it's a TCP or UDP port. Don't set the address and port columns in the dissector functions; just set the address and port members of the "packet_info" structure. Set the columns in "fill_in_columns()"; this means that if we're showing COL_{DEF,RES,UNRES}_SRC" or "COL_{DEF,RES,UNRES}_DST", we only generate the string from "src" or "dst", we don't generate a string for the link-layer address and then overwrite it with a string for the network-layer address (generating those strings costs CPU). Add support for "conversations", where a "conversation" is (at present) a source and destination address and a source and destination port. (In the future, we may support "conversations" above the transport layer, e.g. a TFTP conversation, where the first packet goes from the client to the TFTP server port, but the reply comes back from a different port, and all subsequent packets go between the client address/port and the server address/new port, or an NFS conversation, which might include lock manager, status monitor, and mount packets, as well as NFS packets.) Currently, all we support is a call that takes the source and destination address/port pairs, looks them up in a hash table, and: if nothing is found, creates a new entry in the hash table, and assigns it a unique 32-bit conversation ID, and returns that conversation ID; if an entry is found, returns its conversation ID. Use that in the SMB and AFS code to keep track of individual SMB or AFS conversations. We need to match up requests and replies, as, for certain replies, the operation code for the request to which it's a reply doesn't show up in the reply - you have to find the request with a matching transaction ID. Transaction IDs are per-conversation, so the hash table for requests should include a conversation ID and transaction ID as the key. This allows SMB and AFS decoders to handle IPv4 or IPv6 addresses transparently (and should allow the SMB decoder to handle NetBIOS atop other protocols as well, if the source and destination address and port values in the "packet_info" structure are set appropriately). In the "Follow TCP Connection" code, check to make sure that the addresses are IPv4 addressses; ultimately, that code should be changed to use the conversation code instead, which will let it handle IPv6 transparently. svn path=/trunk/; revision=909
1999-10-22 07:18:23 +00:00
/* XXX - some of this stuff is used only while a packet is being dissected;
should we keep around a separate data structure for that, to save
memory?
Also, should the pseudo-header be supplied by Wiretap when you do a
seek-and-read, so that we don't have to save it for all frames? */
typedef struct _frame_data {
struct _frame_data *next; /* Next element in list */
struct _frame_data *prev; /* Previous element in list */
guint32 num; /* Frame number */
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;
Generalize the "ip_src" and "ip_dst" members of the "packet_info" structure to "dl_src"/"dl_dst", "net_src"/"net_dst", and "src"/"dst" addresses, where an address is an address type, an address length in bytes, and a pointer to that many bytes. "dl_{src,dst}" are the link-layer source/destination; "net_{src,dst}" are the network-layer source/destination; "{src,dst}" are the source/destination from the highest of those two layers that we have in the packet. Add a port type to "packet_info" as well, specifying whether it's a TCP or UDP port. Don't set the address and port columns in the dissector functions; just set the address and port members of the "packet_info" structure. Set the columns in "fill_in_columns()"; this means that if we're showing COL_{DEF,RES,UNRES}_SRC" or "COL_{DEF,RES,UNRES}_DST", we only generate the string from "src" or "dst", we don't generate a string for the link-layer address and then overwrite it with a string for the network-layer address (generating those strings costs CPU). Add support for "conversations", where a "conversation" is (at present) a source and destination address and a source and destination port. (In the future, we may support "conversations" above the transport layer, e.g. a TFTP conversation, where the first packet goes from the client to the TFTP server port, but the reply comes back from a different port, and all subsequent packets go between the client address/port and the server address/new port, or an NFS conversation, which might include lock manager, status monitor, and mount packets, as well as NFS packets.) Currently, all we support is a call that takes the source and destination address/port pairs, looks them up in a hash table, and: if nothing is found, creates a new entry in the hash table, and assigns it a unique 32-bit conversation ID, and returns that conversation ID; if an entry is found, returns its conversation ID. Use that in the SMB and AFS code to keep track of individual SMB or AFS conversations. We need to match up requests and replies, as, for certain replies, the operation code for the request to which it's a reply doesn't show up in the reply - you have to find the request with a matching transaction ID. Transaction IDs are per-conversation, so the hash table for requests should include a conversation ID and transaction ID as the key. This allows SMB and AFS decoders to handle IPv4 or IPv6 addresses transparently (and should allow the SMB decoder to handle NetBIOS atop other protocols as well, if the source and destination address and port values in the "packet_info" structure are set appropriately). In the "Follow TCP Connection" code, check to make sure that the addresses are IPv4 addressses; ultimately, that code should be changed to use the conversation code instead, which will let it handle IPv6 transparently. svn path=/trunk/; revision=909
1999-10-22 07:18:23 +00:00
/* Types of addresses Ethereal knows about. */
typedef enum {
AT_NONE, /* no link-layer address */
AT_ETHER, /* MAC (Ethernet, 802.x, FDDI) address */
AT_IPv4, /* IPv4 */
AT_IPv6, /* IPv6 */
AT_IPX, /* IPX */
AT_SNA, /* SNA */
AT_ATALK, /* Appletalk DDP */
AT_VINES /* Banyan Vines */
Generalize the "ip_src" and "ip_dst" members of the "packet_info" structure to "dl_src"/"dl_dst", "net_src"/"net_dst", and "src"/"dst" addresses, where an address is an address type, an address length in bytes, and a pointer to that many bytes. "dl_{src,dst}" are the link-layer source/destination; "net_{src,dst}" are the network-layer source/destination; "{src,dst}" are the source/destination from the highest of those two layers that we have in the packet. Add a port type to "packet_info" as well, specifying whether it's a TCP or UDP port. Don't set the address and port columns in the dissector functions; just set the address and port members of the "packet_info" structure. Set the columns in "fill_in_columns()"; this means that if we're showing COL_{DEF,RES,UNRES}_SRC" or "COL_{DEF,RES,UNRES}_DST", we only generate the string from "src" or "dst", we don't generate a string for the link-layer address and then overwrite it with a string for the network-layer address (generating those strings costs CPU). Add support for "conversations", where a "conversation" is (at present) a source and destination address and a source and destination port. (In the future, we may support "conversations" above the transport layer, e.g. a TFTP conversation, where the first packet goes from the client to the TFTP server port, but the reply comes back from a different port, and all subsequent packets go between the client address/port and the server address/new port, or an NFS conversation, which might include lock manager, status monitor, and mount packets, as well as NFS packets.) Currently, all we support is a call that takes the source and destination address/port pairs, looks them up in a hash table, and: if nothing is found, creates a new entry in the hash table, and assigns it a unique 32-bit conversation ID, and returns that conversation ID; if an entry is found, returns its conversation ID. Use that in the SMB and AFS code to keep track of individual SMB or AFS conversations. We need to match up requests and replies, as, for certain replies, the operation code for the request to which it's a reply doesn't show up in the reply - you have to find the request with a matching transaction ID. Transaction IDs are per-conversation, so the hash table for requests should include a conversation ID and transaction ID as the key. This allows SMB and AFS decoders to handle IPv4 or IPv6 addresses transparently (and should allow the SMB decoder to handle NetBIOS atop other protocols as well, if the source and destination address and port values in the "packet_info" structure are set appropriately). In the "Follow TCP Connection" code, check to make sure that the addresses are IPv4 addressses; ultimately, that code should be changed to use the conversation code instead, which will let it handle IPv6 transparently. svn path=/trunk/; revision=909
1999-10-22 07:18:23 +00:00
} address_type;
typedef struct _address {
address_type type; /* type of address */
int len; /* length of address, in bytes */
const guint8 *data; /* bytes that constitute address */
} address;
#define SET_ADDRESS(addr, addr_type, addr_len, addr_data) { \
(addr)->type = (addr_type); \
(addr)->len = (addr_len); \
(addr)->data = (addr_data); \
}
/* Types of port numbers Ethereal knows about. */
typedef enum {
PT_NONE, /* no port number */
PT_TCP, /* TCP */
PT_UDP /* UDP */
} port_type;
typedef struct _packet_info {
Generalize the "ip_src" and "ip_dst" members of the "packet_info" structure to "dl_src"/"dl_dst", "net_src"/"net_dst", and "src"/"dst" addresses, where an address is an address type, an address length in bytes, and a pointer to that many bytes. "dl_{src,dst}" are the link-layer source/destination; "net_{src,dst}" are the network-layer source/destination; "{src,dst}" are the source/destination from the highest of those two layers that we have in the packet. Add a port type to "packet_info" as well, specifying whether it's a TCP or UDP port. Don't set the address and port columns in the dissector functions; just set the address and port members of the "packet_info" structure. Set the columns in "fill_in_columns()"; this means that if we're showing COL_{DEF,RES,UNRES}_SRC" or "COL_{DEF,RES,UNRES}_DST", we only generate the string from "src" or "dst", we don't generate a string for the link-layer address and then overwrite it with a string for the network-layer address (generating those strings costs CPU). Add support for "conversations", where a "conversation" is (at present) a source and destination address and a source and destination port. (In the future, we may support "conversations" above the transport layer, e.g. a TFTP conversation, where the first packet goes from the client to the TFTP server port, but the reply comes back from a different port, and all subsequent packets go between the client address/port and the server address/new port, or an NFS conversation, which might include lock manager, status monitor, and mount packets, as well as NFS packets.) Currently, all we support is a call that takes the source and destination address/port pairs, looks them up in a hash table, and: if nothing is found, creates a new entry in the hash table, and assigns it a unique 32-bit conversation ID, and returns that conversation ID; if an entry is found, returns its conversation ID. Use that in the SMB and AFS code to keep track of individual SMB or AFS conversations. We need to match up requests and replies, as, for certain replies, the operation code for the request to which it's a reply doesn't show up in the reply - you have to find the request with a matching transaction ID. Transaction IDs are per-conversation, so the hash table for requests should include a conversation ID and transaction ID as the key. This allows SMB and AFS decoders to handle IPv4 or IPv6 addresses transparently (and should allow the SMB decoder to handle NetBIOS atop other protocols as well, if the source and destination address and port values in the "packet_info" structure are set appropriately). In the "Follow TCP Connection" code, check to make sure that the addresses are IPv4 addressses; ultimately, that code should be changed to use the conversation code instead, which will let it handle IPv6 transparently. svn path=/trunk/; revision=909
1999-10-22 07:18:23 +00:00
int len;
int captured_len;
address dl_src; /* link-layer source address */
address dl_dst; /* link-layer destination address */
address net_src; /* network-layer source address */
address net_dst; /* network-layer destination address */
address src; /* source address (net if present, DL otherwise )*/
address dst; /* destination address (net if present, DL otherwise )*/
guint32 ipproto;
Generalize the "ip_src" and "ip_dst" members of the "packet_info" structure to "dl_src"/"dl_dst", "net_src"/"net_dst", and "src"/"dst" addresses, where an address is an address type, an address length in bytes, and a pointer to that many bytes. "dl_{src,dst}" are the link-layer source/destination; "net_{src,dst}" are the network-layer source/destination; "{src,dst}" are the source/destination from the highest of those two layers that we have in the packet. Add a port type to "packet_info" as well, specifying whether it's a TCP or UDP port. Don't set the address and port columns in the dissector functions; just set the address and port members of the "packet_info" structure. Set the columns in "fill_in_columns()"; this means that if we're showing COL_{DEF,RES,UNRES}_SRC" or "COL_{DEF,RES,UNRES}_DST", we only generate the string from "src" or "dst", we don't generate a string for the link-layer address and then overwrite it with a string for the network-layer address (generating those strings costs CPU). Add support for "conversations", where a "conversation" is (at present) a source and destination address and a source and destination port. (In the future, we may support "conversations" above the transport layer, e.g. a TFTP conversation, where the first packet goes from the client to the TFTP server port, but the reply comes back from a different port, and all subsequent packets go between the client address/port and the server address/new port, or an NFS conversation, which might include lock manager, status monitor, and mount packets, as well as NFS packets.) Currently, all we support is a call that takes the source and destination address/port pairs, looks them up in a hash table, and: if nothing is found, creates a new entry in the hash table, and assigns it a unique 32-bit conversation ID, and returns that conversation ID; if an entry is found, returns its conversation ID. Use that in the SMB and AFS code to keep track of individual SMB or AFS conversations. We need to match up requests and replies, as, for certain replies, the operation code for the request to which it's a reply doesn't show up in the reply - you have to find the request with a matching transaction ID. Transaction IDs are per-conversation, so the hash table for requests should include a conversation ID and transaction ID as the key. This allows SMB and AFS decoders to handle IPv4 or IPv6 addresses transparently (and should allow the SMB decoder to handle NetBIOS atop other protocols as well, if the source and destination address and port values in the "packet_info" structure are set appropriately). In the "Follow TCP Connection" code, check to make sure that the addresses are IPv4 addressses; ultimately, that code should be changed to use the conversation code instead, which will let it handle IPv6 transparently. svn path=/trunk/; revision=909
1999-10-22 07:18:23 +00:00
port_type ptype; /* type of the following two port numbers */
guint32 srcport; /* source port */
guint32 destport; /* destination port */
guint32 match_port;
Generalize the "ip_src" and "ip_dst" members of the "packet_info" structure to "dl_src"/"dl_dst", "net_src"/"net_dst", and "src"/"dst" addresses, where an address is an address type, an address length in bytes, and a pointer to that many bytes. "dl_{src,dst}" are the link-layer source/destination; "net_{src,dst}" are the network-layer source/destination; "{src,dst}" are the source/destination from the highest of those two layers that we have in the packet. Add a port type to "packet_info" as well, specifying whether it's a TCP or UDP port. Don't set the address and port columns in the dissector functions; just set the address and port members of the "packet_info" structure. Set the columns in "fill_in_columns()"; this means that if we're showing COL_{DEF,RES,UNRES}_SRC" or "COL_{DEF,RES,UNRES}_DST", we only generate the string from "src" or "dst", we don't generate a string for the link-layer address and then overwrite it with a string for the network-layer address (generating those strings costs CPU). Add support for "conversations", where a "conversation" is (at present) a source and destination address and a source and destination port. (In the future, we may support "conversations" above the transport layer, e.g. a TFTP conversation, where the first packet goes from the client to the TFTP server port, but the reply comes back from a different port, and all subsequent packets go between the client address/port and the server address/new port, or an NFS conversation, which might include lock manager, status monitor, and mount packets, as well as NFS packets.) Currently, all we support is a call that takes the source and destination address/port pairs, looks them up in a hash table, and: if nothing is found, creates a new entry in the hash table, and assigns it a unique 32-bit conversation ID, and returns that conversation ID; if an entry is found, returns its conversation ID. Use that in the SMB and AFS code to keep track of individual SMB or AFS conversations. We need to match up requests and replies, as, for certain replies, the operation code for the request to which it's a reply doesn't show up in the reply - you have to find the request with a matching transaction ID. Transaction IDs are per-conversation, so the hash table for requests should include a conversation ID and transaction ID as the key. This allows SMB and AFS decoders to handle IPv4 or IPv6 addresses transparently (and should allow the SMB decoder to handle NetBIOS atop other protocols as well, if the source and destination address and port values in the "packet_info" structure are set appropriately). In the "Follow TCP Connection" code, check to make sure that the addresses are IPv4 addressses; ultimately, that code should be changed to use the conversation code instead, which will let it handle IPv6 transparently. svn path=/trunk/; revision=909
1999-10-22 07:18:23 +00:00
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;
/* Struct for boolean enumerations */
typedef struct true_false_string {
char *true_string;
char *false_string;
} true_false_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;
/* Utility routines used by packet*.c */
gchar* ether_to_str(const guint8 *);
gchar* ip_to_str(const guint8 *);
struct e_in6_addr;
gchar* ip6_to_str(struct e_in6_addr *);
Generalize the "ip_src" and "ip_dst" members of the "packet_info" structure to "dl_src"/"dl_dst", "net_src"/"net_dst", and "src"/"dst" addresses, where an address is an address type, an address length in bytes, and a pointer to that many bytes. "dl_{src,dst}" are the link-layer source/destination; "net_{src,dst}" are the network-layer source/destination; "{src,dst}" are the source/destination from the highest of those two layers that we have in the packet. Add a port type to "packet_info" as well, specifying whether it's a TCP or UDP port. Don't set the address and port columns in the dissector functions; just set the address and port members of the "packet_info" structure. Set the columns in "fill_in_columns()"; this means that if we're showing COL_{DEF,RES,UNRES}_SRC" or "COL_{DEF,RES,UNRES}_DST", we only generate the string from "src" or "dst", we don't generate a string for the link-layer address and then overwrite it with a string for the network-layer address (generating those strings costs CPU). Add support for "conversations", where a "conversation" is (at present) a source and destination address and a source and destination port. (In the future, we may support "conversations" above the transport layer, e.g. a TFTP conversation, where the first packet goes from the client to the TFTP server port, but the reply comes back from a different port, and all subsequent packets go between the client address/port and the server address/new port, or an NFS conversation, which might include lock manager, status monitor, and mount packets, as well as NFS packets.) Currently, all we support is a call that takes the source and destination address/port pairs, looks them up in a hash table, and: if nothing is found, creates a new entry in the hash table, and assigns it a unique 32-bit conversation ID, and returns that conversation ID; if an entry is found, returns its conversation ID. Use that in the SMB and AFS code to keep track of individual SMB or AFS conversations. We need to match up requests and replies, as, for certain replies, the operation code for the request to which it's a reply doesn't show up in the reply - you have to find the request with a matching transaction ID. Transaction IDs are per-conversation, so the hash table for requests should include a conversation ID and transaction ID as the key. This allows SMB and AFS decoders to handle IPv4 or IPv6 addresses transparently (and should allow the SMB decoder to handle NetBIOS atop other protocols as well, if the source and destination address and port values in the "packet_info" structure are set appropriately). In the "Follow TCP Connection" code, check to make sure that the addresses are IPv4 addressses; ultimately, that code should be changed to use the conversation code instead, which will let it handle IPv6 transparently. svn path=/trunk/; revision=909
1999-10-22 07:18:23 +00:00
gchar* ipx_addr_to_str(guint32, const guint8 *);
gchar* abs_time_to_str(struct timeval*);
gchar* rel_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*);
char * decode_bitfield_value(char *buf, guint32 val, guint32 mask, int width);
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 *);
Generalize the "ip_src" and "ip_dst" members of the "packet_info" structure to "dl_src"/"dl_dst", "net_src"/"net_dst", and "src"/"dst" addresses, where an address is an address type, an address length in bytes, and a pointer to that many bytes. "dl_{src,dst}" are the link-layer source/destination; "net_{src,dst}" are the network-layer source/destination; "{src,dst}" are the source/destination from the highest of those two layers that we have in the packet. Add a port type to "packet_info" as well, specifying whether it's a TCP or UDP port. Don't set the address and port columns in the dissector functions; just set the address and port members of the "packet_info" structure. Set the columns in "fill_in_columns()"; this means that if we're showing COL_{DEF,RES,UNRES}_SRC" or "COL_{DEF,RES,UNRES}_DST", we only generate the string from "src" or "dst", we don't generate a string for the link-layer address and then overwrite it with a string for the network-layer address (generating those strings costs CPU). Add support for "conversations", where a "conversation" is (at present) a source and destination address and a source and destination port. (In the future, we may support "conversations" above the transport layer, e.g. a TFTP conversation, where the first packet goes from the client to the TFTP server port, but the reply comes back from a different port, and all subsequent packets go between the client address/port and the server address/new port, or an NFS conversation, which might include lock manager, status monitor, and mount packets, as well as NFS packets.) Currently, all we support is a call that takes the source and destination address/port pairs, looks them up in a hash table, and: if nothing is found, creates a new entry in the hash table, and assigns it a unique 32-bit conversation ID, and returns that conversation ID; if an entry is found, returns its conversation ID. Use that in the SMB and AFS code to keep track of individual SMB or AFS conversations. We need to match up requests and replies, as, for certain replies, the operation code for the request to which it's a reply doesn't show up in the reply - you have to find the request with a matching transaction ID. Transaction IDs are per-conversation, so the hash table for requests should include a conversation ID and transaction ID as the key. This allows SMB and AFS decoders to handle IPv4 or IPv6 addresses transparently (and should allow the SMB decoder to handle NetBIOS atop other protocols as well, if the source and destination address and port values in the "packet_info" structure are set appropriately). In the "Follow TCP Connection" code, check to make sure that the addresses are IPv4 addressses; ultimately, that code should be changed to use the conversation code instead, which will let it handle IPv6 transparently. svn path=/trunk/; revision=909
1999-10-22 07:18:23 +00:00
void blank_packetinfo(void);
void afs_init_protocol(void);
void rpc_init_protocol(void);
void smb_init_protocol(void);
void dissect_packet(const u_char *, frame_data *, proto_tree *);
Generalize the "ip_src" and "ip_dst" members of the "packet_info" structure to "dl_src"/"dl_dst", "net_src"/"net_dst", and "src"/"dst" addresses, where an address is an address type, an address length in bytes, and a pointer to that many bytes. "dl_{src,dst}" are the link-layer source/destination; "net_{src,dst}" are the network-layer source/destination; "{src,dst}" are the source/destination from the highest of those two layers that we have in the packet. Add a port type to "packet_info" as well, specifying whether it's a TCP or UDP port. Don't set the address and port columns in the dissector functions; just set the address and port members of the "packet_info" structure. Set the columns in "fill_in_columns()"; this means that if we're showing COL_{DEF,RES,UNRES}_SRC" or "COL_{DEF,RES,UNRES}_DST", we only generate the string from "src" or "dst", we don't generate a string for the link-layer address and then overwrite it with a string for the network-layer address (generating those strings costs CPU). Add support for "conversations", where a "conversation" is (at present) a source and destination address and a source and destination port. (In the future, we may support "conversations" above the transport layer, e.g. a TFTP conversation, where the first packet goes from the client to the TFTP server port, but the reply comes back from a different port, and all subsequent packets go between the client address/port and the server address/new port, or an NFS conversation, which might include lock manager, status monitor, and mount packets, as well as NFS packets.) Currently, all we support is a call that takes the source and destination address/port pairs, looks them up in a hash table, and: if nothing is found, creates a new entry in the hash table, and assigns it a unique 32-bit conversation ID, and returns that conversation ID; if an entry is found, returns its conversation ID. Use that in the SMB and AFS code to keep track of individual SMB or AFS conversations. We need to match up requests and replies, as, for certain replies, the operation code for the request to which it's a reply doesn't show up in the reply - you have to find the request with a matching transaction ID. Transaction IDs are per-conversation, so the hash table for requests should include a conversation ID and transaction ID as the key. This allows SMB and AFS decoders to handle IPv4 or IPv6 addresses transparently (and should allow the SMB decoder to handle NetBIOS atop other protocols as well, if the source and destination address and port values in the "packet_info" structure are set appropriately). In the "Follow TCP Connection" code, check to make sure that the addresses are IPv4 addressses; ultimately, that code should be changed to use the conversation code instead, which will let it handle IPv6 transparently. svn path=/trunk/; revision=909
1999-10-22 07:18:23 +00:00
/*
* 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_ascend(const u_char *, frame_data *, proto_tree *);
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_lapd(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);
typedef void (*DissectFunc) (const u_char*, int, frame_data*, proto_tree*);
/*
* 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_afs(const u_char *, int, frame_data *, proto_tree *);
void dissect_arp(const u_char *, int, frame_data *, proto_tree *);
void dissect_bgp(const u_char *, int, frame_data *, proto_tree *);
void dissect_bootp(const u_char *, int, frame_data *, proto_tree *);
void dissect_bpdu(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_eigrp(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_ipcomp(const u_char *, int, frame_data *, proto_tree *);
void dissect_ipp(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_mapi(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_ntp(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_pim(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_icp(const u_char *,int, frame_data *, proto_tree *);
void dissect_icq(const u_char *,int, frame_data *, proto_tree *);
void dissect_imap(const u_char *,int, frame_data *, proto_tree *);
void dissect_isakmp(const u_char *, int, frame_data *, proto_tree *);
void dissect_pim(const u_char *, int, frame_data *, proto_tree *);
void dissect_q931(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_ripng(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_rx(const u_char *, int, frame_data *, proto_tree *);
void dissect_sap(const u_char *, int, frame_data *, proto_tree *);
void dissect_sdp(const u_char *, int, frame_data *, proto_tree *);
void dissect_sna(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_vlan(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_yhoo(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 *);
/*
* Routines in packet-*.c
* Routines should take four args: packet data *, offset, frame_data *,
* tree *
* They should never modify the packet data.
* They should return TRUE if the packet is of the type the routine would
* dissect, FALSE otherwise.
*/
gboolean dissect_rpc(const u_char *, int, frame_data *, proto_tree *);
void init_dissect_rpc(void);
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);
/* ipproto.c */
extern const char *ipprotostr(int proto);
/*
* 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 */