diff options
Diffstat (limited to 'print-enc.c')
| -rw-r--r-- | print-enc.c | 84 |
1 files changed, 62 insertions, 22 deletions
diff --git a/print-enc.c b/print-enc.c index 5c01f3e..d791b3f 100644 --- a/print-enc.c +++ b/print-enc.c @@ -21,33 +21,73 @@ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-enc.c,v 1.6 2008-11-18 07:35:32 guy Exp $ (LBL)"; -#endif +/* \summary: OpenBSD IPsec encapsulation BPF layer printer */ #ifdef HAVE_CONFIG_H #include "config.h" #endif -#include <tcpdump-stdinc.h> - -#include <pcap.h> +#include <netdissect-stdinc.h> -#include "interface.h" +#include "netdissect.h" #include "extract.h" -#include "addrtoname.h" -#include "enc.h" +/* From $OpenBSD: if_enc.h,v 1.8 2001/06/25 05:14:00 angelos Exp $ */ +/* + * The authors of this code are John Ioannidis (ji@tla.org), + * Angelos D. Keromytis (kermit@csd.uch.gr) and + * Niels Provos (provos@physnet.uni-hamburg.de). + * + * This code was written by John Ioannidis for BSD/OS in Athens, Greece, + * in November 1995. + * + * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996, + * by Angelos D. Keromytis. + * + * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis + * and Niels Provos. + * + * Copyright (C) 1995, 1996, 1997, 1998 by John Ioannidis, Angelos D. Keromytis + * and Niels Provos. + * Copyright (c) 2001, Angelos D. Keromytis. + * + * Permission to use, copy, and modify this software with or without fee + * is hereby granted, provided that this entire notice is included in + * all copies of any software which is or includes a copy or + * modification of this software. + * You may use this code under the GNU public license if you so wish. Please + * contribute changes back to the authors under this freer than GPL license + * so that we may further the use of strong encryption without limitations to + * all. + * + * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY + * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE + * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR + * PURPOSE. + */ + +#define ENC_HDRLEN 12 + +/* From $OpenBSD: mbuf.h,v 1.56 2002/01/25 15:50:23 art Exp $ */ +#define M_CONF 0x0400 /* packet was encrypted (ESP-transport) */ +#define M_AUTH 0x0800 /* packet was authenticated (AH) */ + +struct enchdr { + uint32_t af; + uint32_t spi; + uint32_t flags; +}; #define ENC_PRINT_TYPE(wh, xf, nam) \ if ((wh) & (xf)) { \ - printf("%s%s", nam, (wh) == (xf) ? "): " : ","); \ + ND_PRINT((ndo, "%s%s", nam, (wh) == (xf) ? "): " : ",")); \ (wh) &= ~(xf); \ } u_int -enc_if_print(const struct pcap_pkthdr *h, register const u_char *p) +enc_if_print(netdissect_options *ndo, + const struct pcap_pkthdr *h, register const u_char *p) { register u_int length = h->len; register u_int caplen = h->caplen; @@ -55,34 +95,34 @@ enc_if_print(const struct pcap_pkthdr *h, register const u_char *p) const struct enchdr *hdr; if (caplen < ENC_HDRLEN) { - printf("[|enc]"); + ND_PRINT((ndo, "[|enc]")); goto out; } - hdr = (struct enchdr *)p; + hdr = (const struct enchdr *)p; flags = hdr->flags; if (flags == 0) - printf("(unprotected): "); + ND_PRINT((ndo, "(unprotected): ")); else - printf("("); + ND_PRINT((ndo, "(")); ENC_PRINT_TYPE(flags, M_AUTH, "authentic"); ENC_PRINT_TYPE(flags, M_CONF, "confidential"); /* ENC_PRINT_TYPE(flags, M_TUNNEL, "tunnel"); */ - printf("SPI 0x%08x: ", EXTRACT_32BITS(&hdr->spi)); + ND_PRINT((ndo, "SPI 0x%08x: ", EXTRACT_32BITS(&hdr->spi))); length -= ENC_HDRLEN; caplen -= ENC_HDRLEN; p += ENC_HDRLEN; - + switch (hdr->af) { case AF_INET: - ip_print(gndo, p, length); + ip_print(ndo, p, length); break; -#ifdef INET6 +#ifdef AF_INET6 case AF_INET6: - ip6_print(gndo, p, length); + ip6_print(ndo, p, length); break; -#endif /*INET6*/ +#endif } out: |