forked from osmocom/wireshark
140 lines
4.1 KiB
C
140 lines
4.1 KiB
C
/* packet-ap1394.c
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* Routines for Apple IP-over-IEEE 1394 packet disassembly
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <glib.h>
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#include <epan/packet.h>
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#include <wsutil/pint.h>
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#include <epan/addr_resolv.h>
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#include <epan/strutil.h>
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#include "packet-ap1394.h"
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#include <epan/etypes.h>
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void proto_register_ap1394(void);
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void proto_reg_handoff_ap1394(void);
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static int proto_ap1394 = -1;
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static int hf_ap1394_dst = -1;
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static int hf_ap1394_src = -1;
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static int hf_ap1394_type = -1;
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static gint ett_ap1394 = -1;
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static dissector_table_t ethertype_subdissector_table;
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static dissector_handle_t data_handle;
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void
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capture_ap1394(const guchar *pd, int offset, int len, packet_counts *ld)
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{
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guint16 etype;
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if (!BYTES_ARE_IN_FRAME(offset, len, 18)) {
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ld->other++;
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return;
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}
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/* Skip destination and source addresses */
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offset += 16;
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etype = pntoh16(&pd[offset]);
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offset += 2;
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capture_ethertype(etype, pd, offset, len, ld);
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}
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static void
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dissect_ap1394(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *ti;
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proto_tree *fh_tree = NULL;
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const guint8 *src_addr, *dst_addr;
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guint16 etype;
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tvbuff_t *next_tvb;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "IP/IEEE1394");
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col_clear(pinfo->cinfo, COL_INFO);
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src_addr=tvb_get_ptr(tvb, 8, 8);
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SET_ADDRESS(&pinfo->dl_src, AT_EUI64, 8, src_addr);
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SET_ADDRESS(&pinfo->src, AT_EUI64, 8, src_addr);
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dst_addr=tvb_get_ptr(tvb, 0, 8);
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SET_ADDRESS(&pinfo->dl_dst, AT_EUI64, 8, dst_addr);
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SET_ADDRESS(&pinfo->dst, AT_EUI64, 8, dst_addr);
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if (tree) {
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ti = proto_tree_add_protocol_format(tree, proto_ap1394, tvb, 0, 18,
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"Apple IP-over-IEEE 1394, Src: %s, Dst: %s",
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bytes_to_str(src_addr, 8), bytes_to_str(dst_addr, 8));
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fh_tree = proto_item_add_subtree(ti, ett_ap1394);
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proto_tree_add_bytes(fh_tree, hf_ap1394_dst, tvb, 0, 8, dst_addr);
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proto_tree_add_bytes(fh_tree, hf_ap1394_src, tvb, 8, 8, src_addr);
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}
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etype = tvb_get_ntohs(tvb, 16);
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if (tree)
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proto_tree_add_uint(fh_tree, hf_ap1394_type, tvb, 16, 2, etype);
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next_tvb = tvb_new_subset_remaining(tvb, 18);
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if (!dissector_try_uint(ethertype_subdissector_table, etype, next_tvb,
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pinfo, tree))
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call_dissector(data_handle, next_tvb, pinfo, tree);
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}
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void
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proto_register_ap1394(void)
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{
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static hf_register_info hf[] = {
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{ &hf_ap1394_dst,
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{ "Destination", "ap1394.dst", FT_BYTES, BASE_NONE,
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NULL, 0x0, "Destination address", HFILL }},
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{ &hf_ap1394_src,
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{ "Source", "ap1394.src", FT_BYTES, BASE_NONE,
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NULL, 0x0, "Source address", HFILL }},
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/* registered here but handled in ethertype.c */
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{ &hf_ap1394_type,
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{ "Type", "ap1394.type", FT_UINT16, BASE_HEX,
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VALS(etype_vals), 0x0, NULL, HFILL }},
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};
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static gint *ett[] = {
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&ett_ap1394,
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};
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proto_ap1394 = proto_register_protocol("Apple IP-over-IEEE 1394", "IP/IEEE1394", "ap1394");
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proto_register_field_array(proto_ap1394, 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_ap1394(void)
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{
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dissector_handle_t ap1394_handle;
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data_handle = find_dissector("data");
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ethertype_subdissector_table = find_dissector_table("ethertype");
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ap1394_handle = create_dissector_handle(dissect_ap1394, proto_ap1394);
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dissector_add_uint("wtap_encap", WTAP_ENCAP_APPLE_IP_OVER_IEEE1394, ap1394_handle);
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}
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