From 27df774d0b8e57ae9ee7e5589d7e4cc9a54268e1 Mon Sep 17 00:00:00 2001 From: Guy Harris Date: Fri, 18 Oct 2002 21:00:01 +0000 Subject: From Peter Fales: ARCNET support. Sort the lists of dissectors in the DISSECTOR_SRC macros in "Makefile.am" and "Makefile.nmake". svn path=/trunk/; revision=6450 --- packet-arcnet.c | 185 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 185 insertions(+) create mode 100644 packet-arcnet.c (limited to 'packet-arcnet.c') diff --git a/packet-arcnet.c b/packet-arcnet.c new file mode 100644 index 0000000000..72043512c9 --- /dev/null +++ b/packet-arcnet.c @@ -0,0 +1,185 @@ +/* packet-arcnet.c + * Routines for arcnet dissection + * Copyright 2001-2002, Peter Fales + * + * $Id: packet-arcnet.c,v 1.1 2002/10/18 20:59:57 guy Exp $ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs + * 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. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#include +#include + +#ifdef HAVE_SYS_TYPES_H +# include +#endif + +#ifdef HAVE_NETINET_IN_H +# include +#endif + +#include + +#ifdef NEED_SNPRINTF_H +# include "snprintf.h" +#endif + +#include +#if 0 +#include "packet-ip.h" +#endif +#include "arcnet_pids.h" + +/* Initialize the protocol and registered fields */ +static int proto_arcnet = -1; +static int hf_arcnet_src = -1; +static int hf_arcnet_dst = -1; +static int hf_arcnet_protID = -1; + +/* Initialize the subtree pointers */ +static gint ett_arcnet = -1; + +static dissector_table_t arcnet_dissector_table; +static dissector_handle_t data_handle; + +/* Code to actually dissect the packets */ +static void +dissect_arcnet (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree) +{ + guint8 dst, src, protID; + tvbuff_t *next_tvb; + +/* Set up structures needed to add the protocol subtree and manage it */ + proto_item *ti; + proto_tree *arcnet_tree; + +/* Make entries in Protocol column and Info column on summary display */ + if (check_col (pinfo->cinfo, COL_PROTOCOL)) + col_set_str (pinfo->cinfo, COL_PROTOCOL, "ARCNET"); + + if (check_col (pinfo->cinfo, COL_INFO)) + col_set_str (pinfo->cinfo, COL_INFO, "ARCNET"); + + src = tvb_get_guint8 (tvb, 0); + dst = tvb_get_guint8 (tvb, 1); + protID = tvb_get_guint8 (tvb, 4); + +/* In the interest of speed, if "tree" is NULL, don't do any work not + necessary to generate protocol tree items. */ + if (tree) + { + +/* create display subtree for the protocol */ + ti = + proto_tree_add_item (tree, proto_arcnet, tvb, 0, tvb_length (tvb), + FALSE); + + arcnet_tree = proto_item_add_subtree (ti, ett_arcnet); + + proto_tree_add_uint (tree, hf_arcnet_src, tvb, 0, 1, src); + proto_tree_add_uint (tree, hf_arcnet_dst, tvb, 1, 1, dst); + proto_tree_add_uint (tree, hf_arcnet_protID, tvb, 4, 1, protID); + } + +/* If this protocol has a sub-dissector call it here, see section 1.8 */ + + next_tvb = tvb_new_subset (tvb, 8, -1, -1); + + if (!dissector_try_port (arcnet_dissector_table, protID, + next_tvb, pinfo, tree)) + { + if (check_col (pinfo->cinfo, COL_PROTOCOL)) + { + col_add_fstr (pinfo->cinfo, COL_PROTOCOL, "0x%04x", protID); + } + call_dissector (data_handle, next_tvb, pinfo, tree); + } + +} + + +/* Register the protocol with Ethereal */ + +/* this format is require because a script is used to build the C function + that calls all the protocol registration. +*/ + +static const value_string arcnet_prot_id_vals[] = { + {ARCNET_PROTO_IP, "IP packet"}, + {ARCNET_PROTO_ARP, "ARP packet"}, + {ARCNET_PROTO_IPX, "IPX packet"}, + {0, NULL} +}; + +void +proto_register_arcnet (void) +{ + +/* Setup list of header fields See Section 1.6.1 for details*/ + static hf_register_info hf[] = { + {&hf_arcnet_src, + {"Source", "arcnet.src", + FT_UINT8, BASE_HEX, NULL, 0, + "Source ID", HFILL} + }, + {&hf_arcnet_dst, + {"Dest", "arcnet.dst", + FT_UINT8, BASE_HEX, NULL, 0, + "Dest ID", HFILL} + }, + {&hf_arcnet_protID, + {"Protocol ID", "arcnet.protID", + FT_UINT8, BASE_HEX, VALS(arcnet_prot_id_vals), 0, + "Proto type", HFILL} + }, + }; + +/* Setup protocol subtree array */ + static gint *ett[] = { + &ett_arcnet, + }; + + arcnet_dissector_table = register_dissector_table ("arcnet.protocol_id", + "ARCNET Protocol ID", + FT_UINT8, BASE_HEX); + +/* Register the protocol name and description */ + proto_arcnet = proto_register_protocol ("ARCNET", "ARCNET", "arcnet"); + +/* Required function calls to register the header fields and subtrees used */ + proto_register_field_array (proto_arcnet, hf, array_length (hf)); + proto_register_subtree_array (ett, array_length (ett)); +} + + +void +proto_reg_handoff_arcnet (void) +{ + dissector_handle_t arcnet_handle; + + arcnet_handle = create_dissector_handle (dissect_arcnet, proto_arcnet); + + dissector_add ("wtap_encap", WTAP_ENCAP_ARCNET, arcnet_handle); + data_handle = find_dissector ("data"); +} -- cgit v1.2.3