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wireshark/packet-rx.c

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/* packet-rx.c
* Routines for RX packet dissection
* Copyright 1999, Nathan Neulinger <nneul@umr.edu>
* Based on routines from tcpdump patches by
* Ken Hornstein <kenh@cmf.nrl.navy.mil>
*
* $Id: packet-rx.c,v 1.14 2000/08/13 14:08:44 deniel Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.org>
* Copyright 1998 Gerald Combs
*
* Copied from packet-tftp.c
*
* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#include <string.h>
#include <glib.h>
#include "packet.h"
#include "packet-rx.h"
#include "packet-afs.h"
#include "resolv.h"
#define UDP_PORT_RX_LOW 7000
#define UDP_PORT_RX_HIGH 7009
#define UDP_PORT_RX_AFS_BACKUPS 7021
static const value_string rx_types[] = {
{ RX_PACKET_TYPE_DATA, "data" },
{ RX_PACKET_TYPE_ACK, "ack" },
{ RX_PACKET_TYPE_BUSY, "busy" },
{ RX_PACKET_TYPE_ABORT, "abort" },
{ RX_PACKET_TYPE_ACKALL, "ackall" },
{ RX_PACKET_TYPE_CHALLENGE, "challenge" },
{ RX_PACKET_TYPE_RESPONSE, "response" },
{ RX_PACKET_TYPE_DEBUG, "debug" },
{ RX_PACKET_TYPE_PARAMS, "params" },
{ RX_PACKET_TYPE_VERSION, "version" },
{ 0, NULL },
};
static const value_string rx_flags[] = {
{ RX_CLIENT_INITIATED, "client-init" },
{ RX_REQUEST_ACK, "req-ack" },
{ RX_LAST_PACKET, "last-pckt" },
{ RX_MORE_PACKETS, "more-pckts" },
{ RX_FREE_PACKET, "free-pckt" }
};
static int proto_rx = -1;
static int hf_rx_epoch = -1;
static int hf_rx_cid = -1;
static int hf_rx_seq = -1;
static int hf_rx_serial = -1;
static int hf_rx_callnumber = -1;
static int hf_rx_type = -1;
static int hf_rx_flags = -1;
static int hf_rx_flags_clientinit = -1;
static int hf_rx_flags_request_ack = -1;
static int hf_rx_flags_last_packet = -1;
static int hf_rx_flags_more_packets = -1;
static int hf_rx_flags_free_packet = -1;
static int hf_rx_userstatus = -1;
static int hf_rx_securityindex = -1;
static int hf_rx_spare = -1;
static int hf_rx_serviceid = -1;
static gint ett_rx = -1;
static gint ett_rx_flags = -1;
static void
dissect_rx(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
{
proto_tree *rx_tree, *rx_tree_flags, *rx_flags, *ti;
struct rx_header *rxh;
int reply;
OLD_CHECK_DISPLAY_AS_DATA(proto_rx, pd, offset, fd, tree);
rxh = (struct rx_header *) &pd[offset];
/* get at least a full packet structure */
if ( !BYTES_ARE_IN_FRAME(offset, sizeof(struct rx_header)) )
return;
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "RX");
if (tree) {
ti = proto_tree_add_protocol_format(tree, proto_rx, NullTVB, offset,
sizeof(struct rx_header), "RX Protocol (%s)",
val_to_str(rxh->type,rx_types,"unknown (%d)"));
rx_tree = proto_item_add_subtree(ti, ett_rx);
proto_tree_add_uint(rx_tree, hf_rx_epoch, NullTVB,
offset, 4, pntohl(&rxh->epoch));
proto_tree_add_uint(rx_tree, hf_rx_cid, NullTVB,
offset+4, 4, pntohl(&rxh->cid));
proto_tree_add_uint(rx_tree, hf_rx_callnumber, NullTVB,
offset+8, 4, pntohl(&rxh->callNumber));
proto_tree_add_uint(rx_tree, hf_rx_seq, NullTVB,
offset+12, 4, pntohl(&rxh->seq));
proto_tree_add_uint(rx_tree, hf_rx_serial, NullTVB,
offset+16, 4, pntohl(&rxh->serial));
proto_tree_add_uint(rx_tree, hf_rx_type, NullTVB,
offset+20, 1, rxh->type);
rx_flags = proto_tree_add_uint(rx_tree, hf_rx_flags, NullTVB,
offset+21, 1, rxh->flags);
rx_tree_flags = proto_item_add_subtree(rx_flags, ett_rx_flags);
proto_tree_add_uint(rx_tree_flags, hf_rx_flags_free_packet, NullTVB,
offset+21, 1, rxh->flags);
proto_tree_add_uint(rx_tree_flags, hf_rx_flags_more_packets, NullTVB,
offset+21, 1, rxh->flags);
proto_tree_add_uint(rx_tree_flags, hf_rx_flags_last_packet, NullTVB,
offset+21, 1, rxh->flags);
proto_tree_add_uint(rx_tree_flags, hf_rx_flags_request_ack, NullTVB,
offset+21, 1, rxh->flags);
proto_tree_add_uint(rx_tree_flags, hf_rx_flags_clientinit, NullTVB,
offset+21, 1, rxh->flags);
proto_tree_add_uint(rx_tree, hf_rx_userstatus, NullTVB,
offset+22, 1, rxh->userStatus);
proto_tree_add_uint(rx_tree, hf_rx_securityindex, NullTVB,
offset+23, 1, rxh->securityIndex);
proto_tree_add_uint(rx_tree, hf_rx_spare, NullTVB,
offset+24, 2, pntohs(&rxh->spare));
proto_tree_add_uint(rx_tree, hf_rx_serviceid, NullTVB,
offset+26, 2, pntohs(&rxh->serviceId));
}
if (check_col(fd, COL_INFO))
col_add_fstr(fd, COL_INFO,
"Type: %s "
"Seq: %lu "
"Call: %lu "
"Source Port: %s "
"Destination Port: %s ",
val_to_str(rxh->type, rx_types, "%d"),
(unsigned long)pntohl(&rxh->seq),
(unsigned long)pntohl(&rxh->callNumber),
get_udp_port(pi.srcport),
get_udp_port(pi.destport)
);
reply = (rxh->flags & RX_CLIENT_INITIATED) == 0;
if ( (rxh->type == RX_PACKET_TYPE_ABORT && reply) ||
rxh->type == RX_PACKET_TYPE_DATA )
{
dissect_afs(pd,offset,fd,tree);
}
}
void
proto_register_rx(void)
{
static hf_register_info hf[] = {
{ &hf_rx_epoch, {
"Epoch", "rx.epoch", FT_UINT32, BASE_DEC,
NULL, 0, "Epoch" }},
{ &hf_rx_cid, {
"CID", "rx.cid", FT_UINT32, BASE_DEC,
NULL, 0, "CID" }},
{ &hf_rx_callnumber, {
"Call Number", "rx.callnumber", FT_UINT32, BASE_DEC,
NULL, 0, "Call Number" }},
{ &hf_rx_seq, {
"Sequence Number", "rx.seq", FT_UINT32, BASE_DEC,
NULL, 0, "Sequence Number" }},
{ &hf_rx_serial, {
"Serial", "rx.serial", FT_UINT32, BASE_DEC,
NULL, 0, "Serial" }},
{ &hf_rx_type, {
"Type", "rx.type", FT_UINT8, BASE_DEC,
VALS(rx_types), 0, "Type" }},
{ &hf_rx_flags, {
"Flags", "rx.flags", FT_UINT8, BASE_HEX,
NULL, 0, "Flags" }},
{ &hf_rx_flags_clientinit, {
"Client Initiated", "rx.flags.client_init", FT_UINT8, BASE_BIN,
NULL, RX_CLIENT_INITIATED, "Client Initiated" }},
{ &hf_rx_flags_request_ack, {
"Request Ack", "rx.flags.request_ack", FT_UINT8, BASE_BIN,
NULL, RX_REQUEST_ACK, "Request Ack" }},
{ &hf_rx_flags_last_packet, {
"Last Packet", "rx.flags.last_packet", FT_UINT8, BASE_BIN,
NULL, RX_LAST_PACKET, "Last Packet" }},
{ &hf_rx_flags_more_packets, {
"More Packets", "rx.flags.more_packets", FT_UINT8, BASE_BIN,
NULL, RX_MORE_PACKETS, "More Packets" }},
{ &hf_rx_flags_free_packet, {
"Free Packet", "rx.flags.free_packet", FT_UINT8, BASE_BIN,
NULL, RX_FREE_PACKET, "Free Packet" }},
{ &hf_rx_userstatus, {
"User Status", "rx.userstatus", FT_UINT32, BASE_DEC,
NULL, 0, "User Status" }},
{ &hf_rx_securityindex, {
"Security Index", "rx.securityindex", FT_UINT32, BASE_DEC,
NULL, 0, "Security Index" }},
{ &hf_rx_spare, {
"Spare/Checksum", "rx.spare", FT_UINT16, BASE_DEC,
NULL, 0, "Spare/Checksum" }},
{ &hf_rx_serviceid, {
"Service ID", "rx.serviceid", FT_UINT16, BASE_DEC,
NULL, 0, "Service ID" }},
};
static gint *ett[] = {
&ett_rx,
&ett_rx_flags,
};
proto_rx = proto_register_protocol("RX Protocol", "rx");
proto_register_field_array(proto_rx, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_rx(void)
{
int port;
/* Ports in the range UDP_PORT_RX_LOW to UDP_PORT_RX_HIGH
are all used for various AFS services. */
for (port = UDP_PORT_RX_LOW; port <= UDP_PORT_RX_HIGH; port++)
old_dissector_add("udp.port", port, dissect_rx);
old_dissector_add("udp.port", UDP_PORT_RX_AFS_BACKUPS, dissect_rx);
}
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