/* * 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. */#ifndef lintstatic const char rcsid[] =    "@(#) $Header: print-ppp.c,v 1.26 97/06/12 14:21:29 leres Exp $ (LBL)";#endif#ifndef WIN32
#include <sys/param.h>#include <sys/time.h>#include <sys/socket.h>#include <sys/file.h>#include <sys/ioctl.h>#else 
#include <winsock.h>
#include <time.h>
#endif
#if __STDC__struct mbuf;struct rtentry;#endif#include <net/if.h>#ifndef WIN32
#include <netinet/in.h>#endif
#include <netinet/in_systm.h>#include <netinet/ip.h>#include <ctype.h>#ifndef WIN32
#include <netdb.h>#endif
#include <pcap.h>#include <stdio.h>
#include "interface.h"#include "addrtoname.h"#include "ppp.h"/* XXX This goes somewhere else. */#define PPP_HDRLEN 4/* Standard PPP printer */voidppp_if_print(u_char *user, const struct pcap_pkthdr *h,	     register const u_char *p){	register u_int length = h->len;	register u_int caplen = h->caplen;	const struct ip *ip;	ts_print(&h->ts);	if (caplen < PPP_HDRLEN) {		printf("[|ppp]");		goto out;	}	/*	 * Some printers want to get back at the link level addresses,	 * and/or check that they're not walking off the end of the packet.	 * Rather than pass them all the way down, we set these globals.	 */	packetp = p;	snapend = p + caplen;	if (eflag)		printf("%c %4d %02x %04x: ", p[0] ? 'O' : 'I', length,		       p[1], ntohs(*(u_short *)&p[2]));	length -= PPP_HDRLEN;	ip = (struct ip *)(p + PPP_HDRLEN);	ip_print((const u_char *)ip, length);	if (xflag)		default_print((const u_char *)ip, caplen - PPP_HDRLEN);out:	putchar('\n');}/* proto type to string mapping */static struct tok ptype2str[] = {	{ PPP_VJC,	"VJC" },	{ PPP_VJNC,	"VJNC" },	{ PPP_OSI,	"OSI" },	{ PPP_LCP,	"LCP" },	{ PPP_IPCP,	"IPCP" },	{ 0,		NULL }};#define PPP_BSDI_HDRLEN 24/* BSD/OS specific PPP printer */voidppp_bsdos_if_print(u_char *user, const struct pcap_pkthdr *h,	     register const u_char *p){	register u_int length = h->len;	register u_int caplen = h->caplen;	register int hdrlength;	u_short ptype;	ts_print(&h->ts);	if (caplen < PPP_BSDI_HDRLEN) {		printf("[|ppp]");		goto out;	}	/*	 * Some printers want to get back at the link level addresses,	 * and/or check that they're not walking off the end of the packet.	 * Rather than pass them all the way down, we set these globals.	 */	packetp = p;	snapend = p + caplen;	hdrlength = 0;	if (p[0] == PPP_ADDRESS && p[1] == PPP_CONTROL) {		if (eflag) 			printf("%02x %02x ", p[0], p[1]);		p += 2;		hdrlength = 2;	}	if (eflag) 		printf("%d ", length);	/* Retrieve the protocol type */	if (*p & 01) {		/* Compressed protocol field */		ptype = *p;		if (eflag) 			printf("%02x ", ptype);		p++;		hdrlength += 1;	} else {		/* Un-compressed protocol field */		ptype = ntohs(*(u_short *)p);		if (eflag) 			printf("%04x ", ptype);		p += 2;		hdrlength += 2;	}  	length -= hdrlength;	if (ptype == PPP_IP)		ip_print(p, length);	else		printf("%s ", tok2str(ptype2str, "proto-#%d", ptype));	if (xflag)		default_print((const u_char *)p, caplen - hdrlength);out:	putchar('\n');}