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/* packet-udp.h
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __PACKET_UDP_H__
#define __PACKET_UDP_H__
/* UDP structs and definitions */
typedef struct _e_udphdr {
guint16 uh_sport;
guint16 uh_dport;
guint16 uh_ulen;
guint16 uh_sum_cov;
guint16 uh_sum;
guint32 uh_stream; /* this stream index field is included to help differentiate when address/port pairs are reused */
address ip_src;
address ip_dst;
} e_udphdr;
/* Conversation and process structures originally copied from packet-tcp.c */
typedef struct _udp_flow_t {
/* Process info, currently discovered via IPFIX */
guint32 process_uid; /* UID of local process */
guint32 process_pid; /* PID of local process */
gchar *username; /* Username of the local process */
gchar *command; /* Local process name + path + args */
} udp_flow_t;
struct udp_analysis {
/* These two structs are managed based on comparing the source
* and destination addresses and, if they're equal, comparing
* the source and destination ports.
*
* If the source is greater than the destination, then stuff
* sent from src is in ual1.
*
* If the source is less than the destination, then stuff
* sent from src is in ual2.
*
* XXX - if the addresses and ports are equal, we don't guarantee
* the behavior.
*/
udp_flow_t flow1;
udp_flow_t flow2;
/* These pointers are set by get_tcp_conversation_data()
* fwd point in the same direction as the current packet
* and rev in the reverse direction
*/
udp_flow_t *fwd;
udp_flow_t *rev;
/* Keep track of udp stream numbers instead of using the conversation
* index (as how it was done before). This prevents gaps in the
* stream index numbering
*/
guint32 stream;
};
/** Associate process information with a given flow
*
* @param frame_num The frame number
* @param local_addr The local IPv4 or IPv6 address of the process
* @param remote_addr The remote IPv4 or IPv6 address of the process
* @param local_port The local TCP port of the process
* @param remote_port The remote TCP port of the process
* @param uid The numeric user ID of the process
* @param pid The numeric PID of the process
* @param username Ephemeral string containing the full or partial process name
* @param command Ephemeral string containing the full or partial process name
*/
extern void add_udp_process_info(guint32 frame_num, address *local_addr, address *remote_addr, guint16 local_port, guint16 remote_port, guint32 uid, guint32 pid, gchar *username, gchar *command);
/** Get the current number of UDP streams
*
* @return The number of UDP streams
*/
WS_DLL_PUBLIC guint32 get_udp_stream_count(void);
WS_DLL_PUBLIC void decode_udp_ports(tvbuff_t *, int, packet_info *,
proto_tree *, int, int, int);
#endif
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