diff options
author | Richard Sharpe <sharpe@ns.aus.com> | 2002-12-20 07:56:07 +0000 |
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committer | Richard Sharpe <sharpe@ns.aus.com> | 2002-12-20 07:56:07 +0000 |
commit | 05fa98f94800a465a51b4806678262c1f60a37a5 (patch) | |
tree | aa2954a8284ba65b96ecfc73e0324c386b9eecab /packet-wfleet-hdlc.c | |
parent | 13970cc2ebfaefa4cac8e2fd94c751470f1e0aeb (diff) |
Add support for Wellfleet HDLC. It now can see inside the packets and handles
the capture I was sent as a bunch of TCP segments containing LPD stuff.
svn path=/trunk/; revision=6810
Diffstat (limited to 'packet-wfleet-hdlc.c')
-rw-r--r-- | packet-wfleet-hdlc.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/packet-wfleet-hdlc.c b/packet-wfleet-hdlc.c new file mode 100644 index 0000000000..d571f3d89a --- /dev/null +++ b/packet-wfleet-hdlc.c @@ -0,0 +1,127 @@ +/* packet-chdlc.c + * Routines for Wellfleet HDLC packet disassembly + * Copied from the Cisco HDLC packet disassembly routines + * + * $Id: packet-wfleet-hdlc.c,v 1.1 2002/12/20 07:56:07 sharpe Exp $ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * 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 <glib.h> +#include <epan/packet.h> +#include "etypes.h" +#include <epan/resolv.h> +#include "packet-chdlc.h" +#include "packet-ip.h" + +static int proto_wfleet_hdlc = -1; +static int hf_wfleet_hdlc_addr = -1; +static int hf_wfleet_hdlc_cmd = -1; + +static gint ett_wfleet_hdlc = -1; + +dissector_handle_t eth_handle; + +static const value_string wfleet_hdlc_cmd_vals[] = { + { 0x03, "Un-numbered I frame"}, + { 0, NULL} +}; + +static void +dissect_wfleet_hdlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_item *ti; + proto_tree *fh_tree = NULL; + tvbuff_t *next_tvb; + guint8 addr; + guint8 cmd; + + if (check_col(pinfo->cinfo, COL_RES_DL_SRC)) + col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "N/A"); + if (check_col(pinfo->cinfo, COL_RES_DL_DST)) + col_set_str(pinfo->cinfo, COL_RES_DL_DST, "N/A"); + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "WHDLC"); + if (check_col(pinfo->cinfo, COL_INFO)) + col_clear(pinfo->cinfo, COL_INFO); + + addr = tvb_get_guint8(tvb, 0); + cmd = tvb_get_guint8(tvb, 1); + + if (tree) { + ti = proto_tree_add_item(tree, proto_wfleet_hdlc, tvb, 0, 2, FALSE); + fh_tree = proto_item_add_subtree(ti, ett_wfleet_hdlc); + + proto_tree_add_uint(fh_tree, hf_wfleet_hdlc_addr, tvb, 0, 1, addr); + proto_tree_add_uint(fh_tree, hf_wfleet_hdlc_cmd, tvb, 1, 1, cmd); + + } + + /* + * Build a tvb of the piece past the first two bytes and call the + * ethernet dissector + */ + + next_tvb = tvb_new_subset(tvb, 2, -1, -1); + + call_dissector(eth_handle, next_tvb, pinfo, tree); + +} + +void +proto_register_wfleet_hdlc(void) +{ + static hf_register_info hf[] = { + { &hf_wfleet_hdlc_addr, + { "Address", "wfleet_hdlc.address", FT_UINT8, BASE_HEX, + NULL, 0x0, "", HFILL }}, + { &hf_wfleet_hdlc_cmd, + { "Command", "wfleet_hdlc.command", FT_UINT8, BASE_HEX, + VALS(wfleet_hdlc_cmd_vals), 0x0, "", HFILL }}, + }; + static gint *ett[] = { + &ett_wfleet_hdlc, + }; + + proto_wfleet_hdlc = proto_register_protocol("Wellfleet HDLC", "WHDLC", "whdlc"); + proto_register_field_array(proto_wfleet_hdlc, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + register_dissector("wfleet_hdlc", dissect_wfleet_hdlc, proto_wfleet_hdlc); + +} + +void +proto_reg_handoff_wfleet_hdlc(void) +{ + dissector_handle_t wfleet_hdlc_handle; + + wfleet_hdlc_handle = find_dissector("wfleet_hdlc"); + dissector_add("wtap_encap", WTAP_ENCAP_WFLEET_HDLC, wfleet_hdlc_handle); + + /* + * Find the eth dissector and save a ref to it + */ + + eth_handle = find_dissector("eth"); +} |