1 /* $OpenBSD: print-enc.c,v 1.12 2014/08/14 12:44:44 mpi 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/ip.h> 38 39 #include <ctype.h> 40 #include <netdb.h> 41 #include <pcap.h> 42 #include <signal.h> 43 #include <stdio.h> 44 45 #include "interface.h" 46 #include "addrtoname.h" 47 48 #define ENC_PRINT_TYPE(wh, xf, nam) \ 49 if ((wh) & (xf)) { \ 50 printf("%s%s", nam, (wh) == (xf) ? "): " : ","); \ 51 (wh) &= ~(xf); \ 52 } 53 54 void 55 enc_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p) 56 { 57 u_int length = h->len, caplen = h->caplen; 58 const struct enchdr *hdr; 59 int flags; 60 61 ts_print(&h->ts); 62 63 if (caplen < ENC_HDRLEN) { 64 printf("[|enc]"); 65 goto out; 66 } 67 68 /* 69 * Some printers want to get back at the link level addresses, 70 * and/or check that they're not walking off the end of the packet. 71 * Rather than pass them all the way down, we set these globals. 72 */ 73 packetp = p; 74 snapend = p + caplen; 75 76 hdr = (struct enchdr *)p; 77 flags = hdr->flags; 78 if (flags == 0) 79 printf("(unprotected): "); 80 else 81 printf("("); 82 ENC_PRINT_TYPE(flags, M_AUTH, "authentic"); 83 ENC_PRINT_TYPE(flags, M_CONF, "confidential"); 84 /* ENC_PRINT_TYPE(flags, M_TUNNEL, "tunnel"); */ 85 printf("SPI 0x%08x: ", ntohl(hdr->spi)); 86 87 length -= ENC_HDRLEN; 88 p += ENC_HDRLEN; 89 90 switch (hdr->af) { 91 case AF_INET: 92 default: 93 ip_print(p, length); 94 break; 95 case AF_INET6: 96 ip6_print(p, length); 97 break; 98 } 99 100 if (xflag) 101 default_print(p, caplen - ENC_HDRLEN); 102 out: 103 putchar('\n'); 104 } 105