forked from osmocom/wireshark
329 lines
9.3 KiB
C
329 lines
9.3 KiB
C
/* packet-trmac.c
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* Routines for Token-Ring Media Access Control
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* Gilbert Ramirez <gram@verdict.uthscsa.edu>
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*
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* $Id: packet-trmac.c,v 1.4 1998/10/10 03:32:15 gerald Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@unicom.net>
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* Copyright 1998 Gerald Combs
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*
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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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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#include <pcap.h>
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#include <gtk/gtk.h>
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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 "ethereal.h"
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#include "packet.h"
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#include "etypes.h"
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struct vec_info {
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u_char cmd;
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char *text;
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};
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/* Major Vector */
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static void
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mv_text(u_char cmd, int offset, frame_data *fd, GtkWidget *tree) {
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int i=0;
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static struct vec_info mv[] = {
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{ 0x00, "Response" },
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{ 0x02, "Beacon" },
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{ 0x03, "Claim Token" },
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{ 0x04, "Ring Purge" },
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{ 0x05, "Active Monitor Present" },
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{ 0x06, "Standby Monitor Present" },
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{ 0x07, "Duplicate Address Test" },
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{ 0x09, "Transmit Forward" },
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{ 0x0B, "Remove Ring Station" },
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{ 0x0C, "Change Parameters" },
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{ 0x0D, "Initialize Ring Station" },
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{ 0x0E, "Request Ring Station Address" },
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{ 0x0F, "Request Ring Station Address" },
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{ 0x10, "Request Ring Station Attachments" },
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{ 0x20, "Request Initialization" },
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{ 0x22, "Report Ring Station Address" },
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{ 0x23, "Report Ring Station State" },
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{ 0x24, "Report Ring Station Attachments" },
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{ 0x25, "Report New Active Monitor" },
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{ 0x26, "Report NAUN Change" },
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{ 0x27, "Report Poll Error" },
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{ 0x28, "Report Monitor Errors" },
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{ 0x29, "Report Error" },
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{ 0x2A, "Report Transmit Forward" },
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{ 0x00, NULL }
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};
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while (mv[i].text != NULL) {
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if (mv[i].cmd == cmd) {
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if (fd->win_info[COL_NUM]) {
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/* I can do this because no higher-level dissect()
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will strcpy onto me. */
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fd->win_info[COL_INFO] = mv[i].text;
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}
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if (tree) {
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add_item_to_tree(tree, offset, 1, "Major Vector Command: %s",
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mv[i].text);
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}
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return;
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}
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i++;
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}
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/* failure */
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add_item_to_tree(tree, offset, 1, "Major Vector Command: %02X (Unknown)",
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cmd);
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}
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/* Sub-vectors */
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static int
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sv_text(const u_char *pd, int pkt_offset, GtkWidget *tree)
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{
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int sv_length = pd[0];
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char *beacon[] = {"Recovery mode set", "Signal loss error",
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"Streaming signal not Claim Token MAC frame",
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"Streaming signal, Claim Token MAC frame"};
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GtkWidget *sv_tree, *ti;
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u_char errors[6]; /* isolating or non-isolating */
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/* this just adds to the clutter on the screen...
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add_item_to_tree(tree, pkt_offset, 1,
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"Subvector Length: %d bytes", sv_length);*/
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switch(pd[1]) {
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case 0x01: /* Beacon Type */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Beacon Type: %s", beacon[ pntohs( &pd[2] ) ] );
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break;
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case 0x02: /* NAUN */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"NAUN: %s", ether_to_str((guint8*)&pd[2]));
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break;
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case 0x03: /* Local Ring Number */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Local Ring Number: 0x%04X (%d)",
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pntohs( &pd[2] ), pntohs( &pd[2] ));
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break;
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case 0x04: /* Assign Physical Location */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Assign Physical Location: 0x%08X", pntohl( &pd[2] ) );
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break;
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case 0x05: /* Soft Error Report Value */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Soft Error Report Value: %d ms", 10 * pntohs( &pd[2] ) );
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break;
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case 0x06: /* Enabled Function Classes */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Enabled Function Classes: %04X", pntohs( &pd[2] ) );
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break;
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case 0x07: /* Allowed Access Priority */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Allowed Access Priority: %04X", pntohs( &pd[2] ) );
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break;
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case 0x09: /* Correlator */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Correlator: %04X", pntohs( &pd[2] ) );
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break;
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case 0x0A: /* Address of last neighbor notification */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Address of Last Neighbor Notification: %s",
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ether_to_str((guint8*)&pd[2]));
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break;
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case 0x0B: /* Physical Location */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Physical Location: 0x%08X", pntohl( &pd[2] ) );
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break;
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case 0x20: /* Response Code */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Response Code: 0x%04X 0x%04X", pntohl( &pd[2] ),
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pntohl( &pd[4] ) );
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break;
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case 0x21: /* Reserved */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Reserved: 0x%04X", pntohs( &pd[2] ) );
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break;
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case 0x22: /* Product Instance ID */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Product Instance ID: ...");
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break;
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case 0x23: /* Ring Station Microcode Level */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Ring Station Microcode Level: ...");
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break;
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case 0x26: /* Wrap data */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Wrap Data: ... (%d bytes)", sv_length - 2);
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break;
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case 0x27: /* Frame Forward */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Frame Forward: ... (%d bytes)", sv_length - 2);
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break;
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case 0x29: /* Ring Station Status Subvector */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Ring Station Status Subvector: ...");
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break;
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case 0x2A: /* Transmit Status Code */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Transmit Status Code: %04X", pntohs( &pd[2] ) );
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break;
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case 0x2B: /* Group Address */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Group Address: %08X", pntohl( &pd[2] ) );
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break;
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case 0x2C: /* Functional Address */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Functional Address: %08X", pntohl( &pd[2] ) );
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break;
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case 0x2D: /* Isolating Error Counts */
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memcpy(errors, &pd[2], 6);
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ti = add_item_to_tree(GTK_WIDGET(tree), pkt_offset+1, sv_length-1,
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"Isolating Error Counts (%d total)",
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errors[0] + errors[1] + errors[2] + errors[3] + errors[4]);
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sv_tree = gtk_tree_new();
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add_subtree(ti, sv_tree, ETT_TR_IERR_CNT);
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add_item_to_tree(sv_tree, pkt_offset+2, 1,
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"Line Errors: %d", errors[0]);
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add_item_to_tree(sv_tree, pkt_offset+3, 1,
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"Internal Errors: %d", errors[1]);
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add_item_to_tree(sv_tree, pkt_offset+4, 1,
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"Burst Errors: %d", errors[2]);
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add_item_to_tree(sv_tree, pkt_offset+5, 1,
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"A/C Errors: %d", errors[3]);
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add_item_to_tree(sv_tree, pkt_offset+6, 1,
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"Abort delimiter transmitted: %d", errors[4]);
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break;
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case 0x2E: /* Non-Isolating Error Counts */
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memcpy(errors, &pd[2], 6);
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ti = add_item_to_tree(GTK_WIDGET(tree), pkt_offset+1, sv_length-1,
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"Non-Isolating Error Counts (%d total)",
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errors[0] + errors[1] + errors[2] + errors[3] + errors[4]);
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sv_tree = gtk_tree_new();
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add_subtree(ti, sv_tree, ETT_TR_NERR_CNT);
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add_item_to_tree(sv_tree, pkt_offset+2, 1,
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"Lost Frame Errors: %d", errors[0]);
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add_item_to_tree(sv_tree, pkt_offset+3, 1,
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"Receiver Congestion: %d", errors[1]);
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add_item_to_tree(sv_tree, pkt_offset+4, 1,
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"Frame-Copied Congestion: %d", errors[2]);
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add_item_to_tree(sv_tree, pkt_offset+5, 1,
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"Frequency Errors: %d", errors[3]);
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add_item_to_tree(sv_tree, pkt_offset+6, 1,
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"Token Errors: %d", errors[4]);
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break;
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case 0x30: /* Error Code */
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add_item_to_tree(tree, pkt_offset+1, sv_length-1,
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"Error Code: %04X", pntohs( &pd[2] ) );
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break;
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default: /* Unknown */
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add_item_to_tree(tree, pkt_offset+1, 1,
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"Unknown Sub-Vector: 0x%02X", pd[1]);
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}
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return sv_length;
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}
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void
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dissect_trmac(const u_char *pd, int offset, frame_data *fd, GtkTree *tree) {
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GtkWidget *mac_tree = NULL, *ti;
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int mv_length, sv_length, sv_offset;
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char *class[] = { "Ring Station", "LLC Manager", "", "",
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"Configuration Report Server", "Ring Parameter Server",
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"Ring Error Monitor" };
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if (fd->win_info[COL_NUM]) {
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strcpy(fd->win_info[COL_PROTOCOL], "TR MAC");
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}
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mv_length = ntohs(*((guint16*)&pd[offset]));
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if (tree) {
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ti = add_item_to_tree(GTK_WIDGET(tree), offset, mv_length,
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"Media Access Control");
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mac_tree = gtk_tree_new();
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add_subtree(ti, mac_tree, ETT_TR_MAC);
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}
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/* Interpret the major vector */
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mv_text(pd[offset+3], offset+3, fd, mac_tree);
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if (tree) {
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add_item_to_tree(mac_tree, offset, 2, "Total Length: %d bytes",
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mv_length);
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add_item_to_tree(mac_tree, offset+2, 1, "Source Class: %s",
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class[ pd[offset+2] & 0x0f ]);
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add_item_to_tree(mac_tree, offset+2, 1, "Destination Class: %s",
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class[ pd[offset+2] >> 4 ]);
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/* interpret the subvectors */
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sv_offset = 0;
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offset += 4;
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sv_length = mv_length - 4;
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while (sv_offset < sv_length) {
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sv_offset += sv_text(&pd[offset + sv_offset], offset + sv_offset,
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mac_tree);
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}
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}
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}
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