freebsd-dev/contrib/tcpdump/print-ap1394.c
Gleb Smirnoff 3340d77368 Update tcpdump to 4.9.0.
It fixes many buffer overflow in different protocol parsers, but none of
them are critical, even in absense of Capsicum.

Security:	CVE-2016-7922, CVE-2016-7923, CVE-2016-7924, CVE-2016-7925
Security:	CVE-2016-7926, CVE-2016-7927, CVE-2016-7928, CVE-2016-7929
Security:	CVE-2016-7930, CVE-2016-7931, CVE-2016-7932, CVE-2016-7933
Security:	CVE-2016-7934, CVE-2016-7935, CVE-2016-7936, CVE-2016-7937
Security:	CVE-2016-7938, CVE-2016-7939, CVE-2016-7940, CVE-2016-7973
Security:	CVE-2016-7974, CVE-2016-7975, CVE-2016-7983, CVE-2016-7984
Security:	CVE-2016-7985, CVE-2016-7986, CVE-2016-7992, CVE-2016-7993
Security:	CVE-2016-8574, CVE-2016-8575, CVE-2017-5202, CVE-2017-5203
Security:	CVE-2017-5204, CVE-2017-5205, CVE-2017-5341, CVE-2017-5342
Security:	CVE-2017-5482, CVE-2017-5483, CVE-2017-5484, CVE-2017-5485
Security:	CVE-2017-5486
2017-02-01 20:26:42 +00:00

126 lines
4.0 KiB
C

/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
* 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.
*/
/* \summary: Apple IP-over-IEEE 1394 printer */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <netdissect-stdinc.h>
#include "netdissect.h"
#include "extract.h"
#include "addrtoname.h"
#include "ethertype.h"
/*
* Structure of a header for Apple's IP-over-IEEE 1384 BPF header.
*/
#define FIREWIRE_EUI64_LEN 8
struct firewire_header {
u_char firewire_dhost[FIREWIRE_EUI64_LEN];
u_char firewire_shost[FIREWIRE_EUI64_LEN];
u_short firewire_type;
};
/*
* Length of that header; note that some compilers may pad
* "struct firewire_header" to a multiple of 4 bytes, for example, so
* "sizeof (struct firewire_header)" may not give the right answer.
*/
#define FIREWIRE_HDRLEN 18
static const char *
fwaddr_string(netdissect_options *ndo, const u_char *addr)
{
return (linkaddr_string(ndo, addr, LINKADDR_IEEE1394, FIREWIRE_EUI64_LEN));
}
static inline void
ap1394_hdr_print(netdissect_options *ndo, register const u_char *bp, u_int length)
{
register const struct firewire_header *fp;
uint16_t firewire_type;
fp = (const struct firewire_header *)bp;
ND_PRINT((ndo, "%s > %s",
fwaddr_string(ndo, fp->firewire_shost),
fwaddr_string(ndo, fp->firewire_dhost)));
firewire_type = EXTRACT_16BITS(&fp->firewire_type);
if (!ndo->ndo_qflag) {
ND_PRINT((ndo, ", ethertype %s (0x%04x)",
tok2str(ethertype_values,"Unknown", firewire_type),
firewire_type));
} else {
ND_PRINT((ndo, ", %s", tok2str(ethertype_values,"Unknown Ethertype (0x%04x)", firewire_type)));
}
ND_PRINT((ndo, ", length %u: ", length));
}
/*
* This is the top level routine of the printer. 'p' points
* to the ether header of the packet, 'h->ts' is the timestamp,
* 'h->len' is the length of the packet off the wire, and 'h->caplen'
* is the number of bytes actually captured.
*/
u_int
ap1394_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
{
u_int length = h->len;
u_int caplen = h->caplen;
const struct firewire_header *fp;
u_short ether_type;
struct lladdr_info src, dst;
if (caplen < FIREWIRE_HDRLEN) {
ND_PRINT((ndo, "[|ap1394]"));
return FIREWIRE_HDRLEN;
}
if (ndo->ndo_eflag)
ap1394_hdr_print(ndo, p, length);
length -= FIREWIRE_HDRLEN;
caplen -= FIREWIRE_HDRLEN;
fp = (const struct firewire_header *)p;
p += FIREWIRE_HDRLEN;
ether_type = EXTRACT_16BITS(&fp->firewire_type);
src.addr = fp->firewire_shost;
src.addr_string = fwaddr_string;
dst.addr = fp->firewire_dhost;
dst.addr_string = fwaddr_string;
if (ethertype_print(ndo, ether_type, p, length, caplen, &src, &dst) == 0) {
/* ether_type not known, print raw packet */
if (!ndo->ndo_eflag)
ap1394_hdr_print(ndo, (const u_char *)fp, length + FIREWIRE_HDRLEN);
if (!ndo->ndo_suppress_default_print)
ND_DEFAULTPRINT(p, caplen);
}
return FIREWIRE_HDRLEN;
}