1 /* 2 * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 */ 21 22 #ifdef HAVE_CONFIG_H 23 #include "config.h" 24 #endif 25 26 #ifndef lint 27 static const char rcsid[] = 28 "@(#) $Header: /tcpdump/master/tcpdump/print-vjc.c,v 1.9 2000/10/09 01:53:21 guy Exp $ (LBL)"; 29 #endif 30 31 #include <sys/param.h> 32 #include <sys/time.h> 33 34 #include <netinet/in.h> 35 36 #include <ctype.h> 37 #include <netdb.h> 38 #include <pcap.h> 39 #include <stdio.h> 40 41 #include "interface.h" 42 #include "addrtoname.h" 43 44 #include "slcompress.h" 45 #include "ppp.h" 46 47 int 48 vjc_print(register const char *bp, register u_int length, u_short proto) 49 { 50 int i; 51 52 switch (bp[0] & 0xf0) { 53 case TYPE_IP: 54 if (eflag) 55 printf("(vjc type=IP) "); 56 return PPP_IP; 57 case TYPE_UNCOMPRESSED_TCP: 58 if (eflag) 59 printf("(vjc type=raw TCP) "); 60 return PPP_IP; 61 case TYPE_COMPRESSED_TCP: 62 if (eflag) 63 printf("(vjc type=compressed TCP) "); 64 for (i = 0; i < 8; i++) { 65 if (bp[1] & (0x80 >> i)) 66 printf("%c", "?CI?SAWU"[i]); 67 } 68 if (bp[1]) 69 printf(" "); 70 printf("C=0x%02x ", bp[2]); 71 printf("sum=0x%04x ", *(u_short *)&bp[3]); 72 return -1; 73 case TYPE_ERROR: 74 if (eflag) 75 printf("(vjc type=error) "); 76 return -1; 77 default: 78 if (eflag) 79 printf("(vjc type=0x%02x) ", bp[0] & 0xf0); 80 return -1; 81 } 82 } 83