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Diffstat (limited to 'contrib/tcpdump/print-vjc.c')
| -rw-r--r-- | contrib/tcpdump/print-vjc.c | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/contrib/tcpdump/print-vjc.c b/contrib/tcpdump/print-vjc.c deleted file mode 100644 index 55b7d08..0000000 --- a/contrib/tcpdump/print-vjc.c +++ /dev/null @@ -1,119 +0,0 @@ -/* - * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that: (1) source code distributions - * retain the above copyright notice and this paragraph in its entirety, (2) - * distributions including binary code include the above copyright notice and - * this paragraph in its entirety in the documentation or other materials - * provided with the distribution, and (3) all advertising materials mentioning - * features or use of this software display the following acknowledgement: - * ``This product includes software developed by the University of California, - * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of - * the University nor the names of its contributors may be used to endorse - * or promote products derived from this software without specific prior - * written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-vjc.c,v 1.15 2004/03/25 03:31:17 mcr Exp $ (LBL)"; -#endif - -#include <tcpdump-stdinc.h> - -#include <pcap.h> -#include <stdio.h> - -#include "interface.h" -#include "addrtoname.h" - -#include "slcompress.h" -#include "ppp.h" - -/* - * XXX - for BSD/OS PPP, what packets get supplied with a PPP header type - * of PPP_VJC and what packets get supplied with a PPP header type of - * PPP_VJNC? PPP_VJNC is for "UNCOMPRESSED_TCP" packets, and PPP_VJC - * is for COMPRESSED_TCP packets (PPP_IP is used for TYPE_IP packets). - * - * RFC 1144 implies that, on the wire, the packet type is *not* needed - * for PPP, as different PPP protocol types can be used; it only needs - * to be put on the wire for SLIP. - * - * It also indicates that, for compressed SLIP: - * - * If the COMPRESSED_TCP bit is set in the first byte, it's - * a COMPRESSED_TCP packet; that byte is the change byte, and - * the COMPRESSED_TCP bit, 0x80, isn't used in the change byte. - * - * If the upper 4 bits of the first byte are 7, it's an - * UNCOMPRESSED_TCP packet; that byte is the first byte of - * the UNCOMPRESSED_TCP modified IP header, with a connection - * number in the protocol field, and with the version field - * being 7, not 4. - * - * Otherwise, the packet is an IPv4 packet (where the upper 4 bits - * of the packet are 4). - * - * So this routine looks as if it's sort-of intended to handle - * compressed SLIP, although it doesn't handle UNCOMPRESSED_TCP - * correctly for that (it doesn't fix the version number and doesn't - * do anything to the protocol field), and doesn't check for COMPRESSED_TCP - * packets correctly for that (you only check the first bit - see - * B.1 in RFC 1144). - * - * But it's called for BSD/OS PPP, not SLIP - perhaps BSD/OS does weird - * things with the headers? - * - * Without a BSD/OS VJC-compressed PPP trace, or knowledge of what the - * BSD/OS VJC code does, we can't say what's the case. - * - * We therefore leave "proto" - which is the PPP protocol type - in place, - * *not* marked as unused, for now, so that GCC warnings about the - * unused argument remind us that we should fix this some day. - */ -int -vjc_print(register const char *bp, u_short proto _U_) -{ - int i; - - switch (bp[0] & 0xf0) { - case TYPE_IP: - if (eflag) - printf("(vjc type=IP) "); - return PPP_IP; - case TYPE_UNCOMPRESSED_TCP: - if (eflag) - printf("(vjc type=raw TCP) "); - return PPP_IP; - case TYPE_COMPRESSED_TCP: - if (eflag) - printf("(vjc type=compressed TCP) "); - for (i = 0; i < 8; i++) { - if (bp[1] & (0x80 >> i)) - printf("%c", "?CI?SAWU"[i]); - } - if (bp[1]) - printf(" "); - printf("C=0x%02x ", bp[2]); - printf("sum=0x%04x ", *(u_short *)&bp[3]); - return -1; - case TYPE_ERROR: - if (eflag) - printf("(vjc type=error) "); - return -1; - default: - if (eflag) - printf("(vjc type=0x%02x) ", bp[0] & 0xf0); - return -1; - } -} |
