1 /* $OpenBSD: print-enc.c,v 1.11 2009/10/27 23:59:55 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that: (1) source code distributions 9 * retain the above copyright notice and this paragraph in its entirety, (2) 10 * distributions including binary code include the above copyright notice and 11 * this paragraph in its entirety in the documentation or other materials 12 * provided with the distribution, and (3) all advertising materials mentioning 13 * features or use of this software display the following acknowledgement: 14 * ``This product includes software developed by the University of California, 15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 16 * the University nor the names of its contributors may be used to endorse 17 * or promote products derived from this software without specific prior 18 * written permission. 19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 22 */ 23 24 #include <sys/param.h> 25 #include <sys/time.h> 26 #include <sys/socket.h> 27 #include <sys/file.h> 28 #include <sys/ioctl.h> 29 #include <sys/mbuf.h> 30 31 struct rtentry; 32 #include <net/if.h> 33 #include <netinet/ip_ipsp.h> 34 #include <net/if_enc.h> 35 36 #include <netinet/in.h> 37 #include <netinet/in_systm.h> 38 #include <netinet/ip.h> 39 40 #include <ctype.h> 41 #include <netdb.h> 42 #include <pcap.h> 43 #include <signal.h> 44 #include <stdio.h> 45 46 #include "interface.h" 47 #include "addrtoname.h" 48 49 #define ENC_PRINT_TYPE(wh, xf, nam) \ 50 if ((wh) & (xf)) { \ 51 printf("%s%s", nam, (wh) == (xf) ? "): " : ","); \ 52 (wh) &= ~(xf); \ 53 } 54 55 void 56 enc_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p) 57 { 58 u_int length = h->len, caplen = h->caplen; 59 const struct enchdr *hdr; 60 int flags; 61 62 ts_print(&h->ts); 63 64 if (caplen < ENC_HDRLEN) { 65 printf("[|enc]"); 66 goto out; 67 } 68 69 /* 70 * Some printers want to get back at the link level addresses, 71 * and/or check that they're not walking off the end of the packet. 72 * Rather than pass them all the way down, we set these globals. 73 */ 74 packetp = p; 75 snapend = p + caplen; 76 77 hdr = (struct enchdr *)p; 78 flags = hdr->flags; 79 if (flags == 0) 80 printf("(unprotected): "); 81 else 82 printf("("); 83 ENC_PRINT_TYPE(flags, M_AUTH, "authentic"); 84 ENC_PRINT_TYPE(flags, M_CONF, "confidential"); 85 /* ENC_PRINT_TYPE(flags, M_TUNNEL, "tunnel"); */ 86 printf("SPI 0x%08x: ", ntohl(hdr->spi)); 87 88 length -= ENC_HDRLEN; 89 p += ENC_HDRLEN; 90 91 switch (hdr->af) { 92 case AF_INET: 93 default: 94 ip_print(p, length); 95 break; 96 case AF_INET6: 97 ip6_print(p, length); 98 break; 99 } 100 101 if (xflag) 102 default_print(p, caplen - ENC_HDRLEN); 103 out: 104 putchar('\n'); 105 } 106