82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
/* packet-ppp.c
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* Routines for ppp packet disassembly
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*
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* $Id: packet-ppp.c,v 1.2 1998/09/16 03:22:09 gerald 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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*
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* This file created and by Mike Hall <mlh@io.com>
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* Copyright 1998
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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 <gtk/gtk.h>
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#include <stdio.h>
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#include <pcap.h>
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#include "packet.h"
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#include "ethereal.h"
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void
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dissect_ppp( const u_char *pd, frame_data *fd, GtkTree *tree ) {
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e_ppphdr ph;
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GtkWidget *ti, *fh_tree;
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guchar flag, addr, control;
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guint protocol;
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ph.ppp_flag = pd[0];
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ph.ppp_addr = pd[1];
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ph.ppp_ctl = pd[2];
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ph.ppp_prot = pntohs(&pd[3]);
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/* load the top pane info. This should be overwritten by
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the next protocol in the stack */
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if(fd->win_info[0]) {
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strcpy(fd->win_info[1], "N/A" );
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strcpy(fd->win_info[2], "N/A" );
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strcpy(fd->win_info[4], "PPP" );
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}
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/* populate a tree in the second pane with the status of the link
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layer (ie none) */
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if(tree) {
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ti = add_item_to_tree( GTK_WIDGET(tree), 0, 5,
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"Point-to-Point Protocol (%d on link, %d captured)", fd->pkt_len,
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fd->cap_len );
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fh_tree = gtk_tree_new();
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add_subtree(ti, fh_tree, ETT_PPP);
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add_item_to_tree(fh_tree, 0, 1, "Flag: %02x", ph.ppp_flag);
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add_item_to_tree(fh_tree, 1, 1, "Address: %02x", ph.ppp_addr);
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add_item_to_tree(fh_tree, 2, 1, "Control: %02x", ph.ppp_ctl);
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add_item_to_tree(fh_tree, 3, 2, "Protocol: %04x", ph.ppp_prot);
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}
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switch (ph.ppp_prot) {
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case 0x0021:
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dissect_ip(pd, 5, fd, tree);
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break;
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default:
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dissect_data(pd, 5, fd, tree);
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break;
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}
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}
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