forked from osmocom/wireshark
43ccfd8054
"{old_}heur_dissector_add()", "{old_}conv_dissector_add()", and
"register_dissector()", so that an entry in those tables has associated
with it the protocol index of the protocol the dissector handles (or -1,
if there is no protocol index for it).
This is for future use in a number of places.
(Arguably, "proto_register_protocol()" should take a dissector pointer
as an argument, but
1) it'd have to handle both regular and heuristic dissectors;
2) making it take either a "dissector_t" or a union of that and
a "heur_dissector_t" introduces some painful header-file
interdependencies
so I'm punting on that for now. As with other Ethereal internal APIs,
these APIs are subject to change in the future, at least until Ethereal
1.0 comes out....)
svn path=/trunk/; revision=2849
260 lines
8 KiB
C
260 lines
8 KiB
C
/* packet-rx.c
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* Routines for RX packet dissection
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* Copyright 1999, Nathan Neulinger <nneul@umr.edu>
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* Based on routines from tcpdump patches by
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* Ken Hornstein <kenh@cmf.nrl.navy.mil>
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*
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* $Id: packet-rx.c,v 1.18 2001/01/09 06:31:41 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@zing.org>
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* Copyright 1998 Gerald Combs
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*
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* Copied from packet-tftp.c
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include <string.h>
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#include <glib.h>
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#include "packet.h"
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#include "packet-rx.h"
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#include "packet-afs.h"
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#include "resolv.h"
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#define UDP_PORT_RX_LOW 7000
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#define UDP_PORT_RX_HIGH 7009
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#define UDP_PORT_RX_AFS_BACKUPS 7021
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static const value_string rx_types[] = {
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{ RX_PACKET_TYPE_DATA, "data" },
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{ RX_PACKET_TYPE_ACK, "ack" },
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{ RX_PACKET_TYPE_BUSY, "busy" },
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{ RX_PACKET_TYPE_ABORT, "abort" },
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{ RX_PACKET_TYPE_ACKALL, "ackall" },
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{ RX_PACKET_TYPE_CHALLENGE, "challenge" },
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{ RX_PACKET_TYPE_RESPONSE, "response" },
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{ RX_PACKET_TYPE_DEBUG, "debug" },
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{ RX_PACKET_TYPE_PARAMS, "params" },
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{ RX_PACKET_TYPE_VERSION, "version" },
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{ 0, NULL },
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};
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static const value_string rx_flags[] = {
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{ RX_CLIENT_INITIATED, "client-init" },
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{ RX_REQUEST_ACK, "req-ack" },
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{ RX_LAST_PACKET, "last-pckt" },
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{ RX_MORE_PACKETS, "more-pckts" },
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{ RX_FREE_PACKET, "free-pckt" },
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{ 0, NULL }
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};
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static int proto_rx = -1;
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static int hf_rx_epoch = -1;
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static int hf_rx_cid = -1;
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static int hf_rx_seq = -1;
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static int hf_rx_serial = -1;
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static int hf_rx_callnumber = -1;
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static int hf_rx_type = -1;
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static int hf_rx_flags = -1;
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static int hf_rx_flags_clientinit = -1;
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static int hf_rx_flags_request_ack = -1;
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static int hf_rx_flags_last_packet = -1;
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static int hf_rx_flags_more_packets = -1;
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static int hf_rx_flags_free_packet = -1;
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static int hf_rx_userstatus = -1;
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static int hf_rx_securityindex = -1;
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static int hf_rx_spare = -1;
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static int hf_rx_serviceid = -1;
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static gint ett_rx = -1;
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static gint ett_rx_flags = -1;
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static void
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dissect_rx(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
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{
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proto_tree *rx_tree, *rx_tree_flags, *rx_flags, *ti;
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struct rx_header *rxh;
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int reply;
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OLD_CHECK_DISPLAY_AS_DATA(proto_rx, pd, offset, fd, tree);
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rxh = (struct rx_header *) &pd[offset];
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/* get at least a full packet structure */
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if ( !BYTES_ARE_IN_FRAME(offset, sizeof(struct rx_header)) )
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return;
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if (check_col(fd, COL_PROTOCOL))
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col_set_str(fd, COL_PROTOCOL, "RX");
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if (tree) {
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ti = proto_tree_add_protocol_format(tree, proto_rx, NullTVB, offset,
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sizeof(struct rx_header), "RX Protocol (%s)",
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val_to_str(rxh->type,rx_types,"unknown (%d)"));
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rx_tree = proto_item_add_subtree(ti, ett_rx);
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proto_tree_add_uint(rx_tree, hf_rx_epoch, NullTVB,
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offset, 4, pntohl(&rxh->epoch));
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proto_tree_add_uint(rx_tree, hf_rx_cid, NullTVB,
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offset+4, 4, pntohl(&rxh->cid));
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proto_tree_add_uint(rx_tree, hf_rx_callnumber, NullTVB,
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offset+8, 4, pntohl(&rxh->callNumber));
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proto_tree_add_uint(rx_tree, hf_rx_seq, NullTVB,
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offset+12, 4, pntohl(&rxh->seq));
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proto_tree_add_uint(rx_tree, hf_rx_serial, NullTVB,
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offset+16, 4, pntohl(&rxh->serial));
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proto_tree_add_uint(rx_tree, hf_rx_type, NullTVB,
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offset+20, 1, rxh->type);
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rx_flags = proto_tree_add_uint(rx_tree, hf_rx_flags, NullTVB,
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offset+21, 1, rxh->flags);
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rx_tree_flags = proto_item_add_subtree(rx_flags, ett_rx_flags);
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proto_tree_add_uint(rx_tree_flags, hf_rx_flags_free_packet, NullTVB,
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offset+21, 1, rxh->flags);
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proto_tree_add_uint(rx_tree_flags, hf_rx_flags_more_packets, NullTVB,
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offset+21, 1, rxh->flags);
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proto_tree_add_uint(rx_tree_flags, hf_rx_flags_last_packet, NullTVB,
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offset+21, 1, rxh->flags);
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proto_tree_add_uint(rx_tree_flags, hf_rx_flags_request_ack, NullTVB,
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offset+21, 1, rxh->flags);
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proto_tree_add_uint(rx_tree_flags, hf_rx_flags_clientinit, NullTVB,
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offset+21, 1, rxh->flags);
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proto_tree_add_uint(rx_tree, hf_rx_userstatus, NullTVB,
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offset+22, 1, rxh->userStatus);
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proto_tree_add_uint(rx_tree, hf_rx_securityindex, NullTVB,
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offset+23, 1, rxh->securityIndex);
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proto_tree_add_uint(rx_tree, hf_rx_spare, NullTVB,
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offset+24, 2, pntohs(&rxh->spare));
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proto_tree_add_uint(rx_tree, hf_rx_serviceid, NullTVB,
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offset+26, 2, pntohs(&rxh->serviceId));
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}
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if (check_col(fd, COL_INFO))
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col_add_fstr(fd, COL_INFO,
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"Type: %s "
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"Seq: %lu "
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"Call: %lu "
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"Source Port: %s "
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"Destination Port: %s ",
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val_to_str(rxh->type, rx_types, "%d"),
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(unsigned long)pntohl(&rxh->seq),
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(unsigned long)pntohl(&rxh->callNumber),
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get_udp_port(pi.srcport),
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get_udp_port(pi.destport)
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);
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reply = (rxh->flags & RX_CLIENT_INITIATED) == 0;
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if ( (rxh->type == RX_PACKET_TYPE_ABORT && reply) ||
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rxh->type == RX_PACKET_TYPE_DATA )
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{
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dissect_afs(pd,offset,fd,tree);
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}
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}
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void
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proto_register_rx(void)
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{
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static hf_register_info hf[] = {
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{ &hf_rx_epoch, {
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"Epoch", "rx.epoch", FT_UINT32, BASE_DEC,
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NULL, 0, "Epoch" }},
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{ &hf_rx_cid, {
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"CID", "rx.cid", FT_UINT32, BASE_DEC,
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NULL, 0, "CID" }},
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{ &hf_rx_callnumber, {
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"Call Number", "rx.callnumber", FT_UINT32, BASE_DEC,
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NULL, 0, "Call Number" }},
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{ &hf_rx_seq, {
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"Sequence Number", "rx.seq", FT_UINT32, BASE_DEC,
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NULL, 0, "Sequence Number" }},
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{ &hf_rx_serial, {
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"Serial", "rx.serial", FT_UINT32, BASE_DEC,
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NULL, 0, "Serial" }},
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{ &hf_rx_type, {
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"Type", "rx.type", FT_UINT8, BASE_DEC,
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VALS(rx_types), 0, "Type" }},
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{ &hf_rx_flags, {
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"Flags", "rx.flags", FT_UINT8, BASE_HEX,
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NULL, 0, "Flags" }},
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{ &hf_rx_flags_clientinit, {
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"Client Initiated", "rx.flags.client_init", FT_UINT8, BASE_BIN,
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NULL, RX_CLIENT_INITIATED, "Client Initiated" }},
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{ &hf_rx_flags_request_ack, {
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"Request Ack", "rx.flags.request_ack", FT_UINT8, BASE_BIN,
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NULL, RX_REQUEST_ACK, "Request Ack" }},
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{ &hf_rx_flags_last_packet, {
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"Last Packet", "rx.flags.last_packet", FT_UINT8, BASE_BIN,
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NULL, RX_LAST_PACKET, "Last Packet" }},
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{ &hf_rx_flags_more_packets, {
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"More Packets", "rx.flags.more_packets", FT_UINT8, BASE_BIN,
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NULL, RX_MORE_PACKETS, "More Packets" }},
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{ &hf_rx_flags_free_packet, {
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"Free Packet", "rx.flags.free_packet", FT_UINT8, BASE_BIN,
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NULL, RX_FREE_PACKET, "Free Packet" }},
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{ &hf_rx_userstatus, {
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"User Status", "rx.userstatus", FT_UINT32, BASE_DEC,
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NULL, 0, "User Status" }},
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{ &hf_rx_securityindex, {
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"Security Index", "rx.securityindex", FT_UINT32, BASE_DEC,
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NULL, 0, "Security Index" }},
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{ &hf_rx_spare, {
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"Spare/Checksum", "rx.spare", FT_UINT16, BASE_DEC,
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NULL, 0, "Spare/Checksum" }},
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{ &hf_rx_serviceid, {
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"Service ID", "rx.serviceid", FT_UINT16, BASE_DEC,
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NULL, 0, "Service ID" }},
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};
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static gint *ett[] = {
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&ett_rx,
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&ett_rx_flags,
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};
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proto_rx = proto_register_protocol("RX Protocol", "RX", "rx");
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proto_register_field_array(proto_rx, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_rx(void)
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{
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int port;
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/* Ports in the range UDP_PORT_RX_LOW to UDP_PORT_RX_HIGH
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are all used for various AFS services. */
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for (port = UDP_PORT_RX_LOW; port <= UDP_PORT_RX_HIGH; port++)
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old_dissector_add("udp.port", port, dissect_rx, proto_rx);
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old_dissector_add("udp.port", UDP_PORT_RX_AFS_BACKUPS, dissect_rx,
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proto_rx);
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}
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