![Guy Harris](/assets/img/avatar_default.png)
which fills in a caller-supplied buffer. Create "_buf()" versions of various "to_str" routines for various address types, and create a routine to map SNA FIDs to strings, and use them to finish up "address_to_str_buf()". Get rid of the declaration of "sna_fid_type_4_addr_to_str()" in "packet-sna.h", as that routine has been swallowed up in "sna_fid_to_str()". svn path=/trunk/; revision=8260
204 lines
5.9 KiB
C
204 lines
5.9 KiB
C
/* osi-utils.c
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* Routines for ISO/OSI network and transport protocol packet disassembly
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* Main entrance point and common functions
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*
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* $Id: osi-utils.c,v 1.12 2003/08/26 01:00:29 guy Exp $
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* Laurent Deniel <laurent.deniel@free.fr>
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* Ralf Schneider <Ralf.Schneider@t-online.de>
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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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., 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 <stdio.h>
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#include <string.h>
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#include <glib.h>
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#include "osi-utils.h"
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gchar *
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print_nsap_net( const guint8 *ad, int length )
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{
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static gchar str[MAX_NSAP_LEN * 3 + 50]; /* reserve space for nice layout */
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gchar *cur;
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cur = str;
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print_nsap_net_buf( ad, length, cur );
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return( cur );
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}
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void
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print_nsap_net_buf( const guint8 *ad, int length, gchar *buf )
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{
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gchar *cur;
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/* to do : NSAP / NET decoding */
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if ( (length <= 0 ) || ( length > MAX_NSAP_LEN ) ) {
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sprintf( buf, "<Invalid length of NSAP>");
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return;
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}
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cur = buf;
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if ( ( length == RFC1237_NSAP_LEN ) || ( length == RFC1237_NSAP_LEN + 1 ) ) {
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print_area_buf( ad, RFC1237_FULLAREA_LEN, cur );
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cur += strlen( cur );
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print_system_id_buf( ad + RFC1237_FULLAREA_LEN, RFC1237_SYSTEMID_LEN, cur );
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cur += strlen( cur );
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cur += sprintf( cur, "[%02x]",
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ad[ RFC1237_FULLAREA_LEN + RFC1237_SYSTEMID_LEN ] );
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if ( length == RFC1237_NSAP_LEN + 1 ) {
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cur += sprintf( cur, "-%02x", ad[ length -1 ] );
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}
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}
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else { /* probably format as standard */
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return( print_area_buf( ad, length, buf ) );
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}
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} /* print_nsap */
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gchar *
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print_system_id( const guint8 *ad, int length )
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{
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static gchar str[MAX_SYSTEMID_LEN * 3 + 5]; /* Don't trust exact matching */
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gchar *cur;
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cur = str;
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print_nsap_net_buf( ad, length, cur );
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return( cur );
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}
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void
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print_system_id_buf( const guint8 *ad, int length, gchar *buf )
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{
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gchar *cur;
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int tmp;
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if ( ( length <= 0 ) || ( length > MAX_SYSTEMID_LEN ) ) {
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sprintf( buf, "<Invalid length of SYSTEM ID>");
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return;
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}
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cur = buf;
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if ( ( 6 == length ) || /* System-ID */
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( 7 == length ) || /* LAN-ID */
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( 8 == length )) { /* LSP-ID */
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cur += sprintf(cur, "%02x%02x.%02x%02x.%02x%02x", ad[0], ad[1],
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ad[2], ad[3], ad[4], ad[5] );
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if ( ( 7 == length ) ||
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( 8 == length )) {
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cur += sprintf( cur, ".%02x", ad[6] );
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}
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if ( 8 == length ) {
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cur += sprintf( cur, "-%02x", ad[7] );
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}
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}
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else {
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tmp = 0;
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while ( tmp < length / 4 ) { /* 16 / 4 == 4 > four Octets left to print */
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cur += sprintf( cur, "%02x", ad[tmp++] );
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cur += sprintf( cur, "%02x", ad[tmp++] );
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cur += sprintf( cur, "%02x", ad[tmp++] );
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cur += sprintf( cur, "%02x.", ad[tmp++] );
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}
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if ( 1 == tmp ) { /* Special case for Designated IS */
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sprintf( --cur, ".%02x", ad[tmp] );
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}
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else {
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for ( ; tmp < length; ) { /* print the rest without dot */
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cur += sprintf( cur, "%02x", ad[tmp++] );
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}
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}
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}
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}
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gchar *
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print_area(const guint8 *ad, int length)
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{
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static gchar str[MAX_AREA_LEN * 3 + 20]; /* reserve space for nice layout */
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gchar *cur;
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cur = str;
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print_area_buf( ad, length, cur );
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return cur;
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}
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void
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print_area_buf(const guint8 *ad, int length, gchar *buf)
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{
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gchar *cur;
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int tmp = 0;
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/* to do : all real area decoding now: NET is assumed if id len is 1 more byte
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* and take away all these stupid resource consuming local statics
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*/
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if (length <= 0 || length > MAX_AREA_LEN) {
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sprintf( buf, "<Invalid length of AREA>");
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return;
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}
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cur = buf;
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if ( ( ( NSAP_IDI_ISODCC == *ad )
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|| ( NSAP_IDI_GOSIP2 == *ad )
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)
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&&
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( ( RFC1237_FULLAREA_LEN == length )
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|| ( RFC1237_FULLAREA_LEN + 1 == length )
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)
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) { /* AFI is good and length is long enough */
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if ( length > RFC1237_FULLAREA_LEN + 1 ) { /* Special Case Designated IS */
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sprintf( buf, "<Invalid length of AREA for DCC / GOSIP AFI>");
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return;
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}
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cur += sprintf( cur, "[%02x|%02x:%02x][%02x|%02x:%02x:%02x|%02x:%02x]",
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ad[0], ad[1], ad[2], ad[3], ad[4],
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ad[5], ad[6], ad[7], ad[8] );
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cur += sprintf( cur, "[%02x:%02x|%02x:%02x]",
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ad[9], ad[10], ad[11], ad[12] );
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if ( RFC1237_FULLAREA_LEN + 1 == length )
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sprintf( cur, "-[%02x]", ad[20] );
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}
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else { /* print standard format */
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if ( length == RFC1237_AREA_LEN ) {
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sprintf( buf, "%02x.%02x%02x", ad[0], ad[1], ad[2] );
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return;
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}
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if ( 4 < length ) {
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while ( tmp < length / 4 ) { /* 16/4==4 > four Octets left to print */
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cur += sprintf( cur, "%02x", ad[tmp++] );
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cur += sprintf( cur, "%02x", ad[tmp++] );
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cur += sprintf( cur, "%02x", ad[tmp++] );
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cur += sprintf( cur, "%02x.", ad[tmp++] );
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}
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if ( 1 == tmp ) { /* Special case for Designated IS */
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sprintf( --cur, "-%02x", ad[tmp] );
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}
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else {
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for ( ; tmp < length; ) { /* print the rest without dot */
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cur += sprintf( cur, "%02x", ad[tmp++] );
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}
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}
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}
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}
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} /* print_area_buf */
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