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freebsd-skq/contrib/tcpdump/print.c
emaste 37e2725e53 Update tcpdump to 4.9.2 
It contains many fixes, including bounds checking, buffer overflows (in
SLIP and bittok2str_internal), buffer over-reads, and infinite loops.

One other notable change:
  Do not use getprotobynumber() for protocol name resolution.
  Do not do any protocol name resolution if -n is specified.

Submitted by:	gordon
Reviewed by:	delphij, emaste, glebius
MFC after:	1 week
Relnotes:	Yes
Security:	CVE-2017-11108, CVE-2017-11541, CVE-2017-11542
Security:	CVE-2017-11543, CVE-2017-12893, CVE-2017-12894
Security:	CVE-2017-12895, CVE-2017-12896, CVE-2017-12897
Security:	CVE-2017-12898, CVE-2017-12899, CVE-2017-12900
Security:	CVE-2017-12901, CVE-2017-12902, CVE-2017-12985
Security:	CVE-2017-12986, CVE-2017-12987, CVE-2017-12988
Security:	CVE-2017-12989, CVE-2017-12990, CVE-2017-12991
Security:	CVE-2017-12992, CVE-2017-12993, CVE-2017-12994
Security:	CVE-2017-12995, CVE-2017-12996, CVE-2017-12997
Security:	CVE-2017-12998, CVE-2017-12999, CVE-2017-13000
Security:	CVE-2017-13001, CVE-2017-13002, CVE-2017-13003
Security:	CVE-2017-13004, CVE-2017-13005, CVE-2017-13006
Security:	CVE-2017-13007, CVE-2017-13008, CVE-2017-13009
Security:	CVE-2017-13010, CVE-2017-13011, CVE-2017-13012
Security:	CVE-2017-13013, CVE-2017-13014, CVE-2017-13015
Security:	CVE-2017-13016, CVE-2017-13017, CVE-2017-13018
Security:	CVE-2017-13019, CVE-2017-13020, CVE-2017-13021
Security:	CVE-2017-13022, CVE-2017-13023, CVE-2017-13024
Security:	CVE-2017-13025, CVE-2017-13026, CVE-2017-13027
Security:	CVE-2017-13028, CVE-2017-13029, CVE-2017-13030
Security:	CVE-2017-13031, CVE-2017-13032, CVE-2017-13033
Security:	CVE-2017-13034, CVE-2017-13035, CVE-2017-13036
Security:	CVE-2017-13037, CVE-2017-13038, CVE-2017-13039
Security:	CVE-2017-13040, CVE-2017-13041, CVE-2017-13042
Security:	CVE-2017-13043, CVE-2017-13044, CVE-2017-13045
Security:	CVE-2017-13046, CVE-2017-13047, CVE-2017-13048
Security:	CVE-2017-13049, CVE-2017-13050, CVE-2017-13051
Security:	CVE-2017-13052, CVE-2017-13053, CVE-2017-13054
Security:	CVE-2017-13055, CVE-2017-13687, CVE-2017-13688
Security:	CVE-2017-13689, CVE-2017-13690, CVE-2017-13725
Differential Revision:	https://reviews.freebsd.org/D12404
2017-12-06 02:21:11 +00:00

478 lines
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/*
* 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.
*
* Support for splitting captures into multiple files with a maximum
* file size:
*
* Copyright (c) 2001
* Seth Webster <swebster@sst.ll.mit.edu>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <netdissect-stdinc.h>
#include "netdissect.h"
#include "addrtoname.h"
#include "print.h"
struct printer {
if_printer f;
int type;
};
static const struct printer printers[] = {
{ ether_if_print, DLT_EN10MB },
#ifdef DLT_IPNET
{ ipnet_if_print, DLT_IPNET },
#endif
#ifdef DLT_IEEE802_15_4
{ ieee802_15_4_if_print, DLT_IEEE802_15_4 },
#endif
#ifdef DLT_IEEE802_15_4_NOFCS
{ ieee802_15_4_if_print, DLT_IEEE802_15_4_NOFCS },
#endif
#ifdef DLT_PPI
{ ppi_if_print, DLT_PPI },
#endif
#ifdef DLT_NETANALYZER
{ netanalyzer_if_print, DLT_NETANALYZER },
#endif
#ifdef DLT_NETANALYZER_TRANSPARENT
{ netanalyzer_transparent_if_print, DLT_NETANALYZER_TRANSPARENT },
#endif
#if defined(DLT_NFLOG) && defined(HAVE_PCAP_NFLOG_H)
{ nflog_if_print, DLT_NFLOG},
#endif
#ifdef DLT_CIP
{ cip_if_print, DLT_CIP },
#endif
#ifdef DLT_ATM_CLIP
{ cip_if_print, DLT_ATM_CLIP },
#endif
#ifdef DLT_IP_OVER_FC
{ ipfc_if_print, DLT_IP_OVER_FC },
#endif
{ null_if_print, DLT_NULL },
#ifdef DLT_LOOP
{ null_if_print, DLT_LOOP },
#endif
#ifdef DLT_APPLE_IP_OVER_IEEE1394
{ ap1394_if_print, DLT_APPLE_IP_OVER_IEEE1394 },
#endif
#if defined(DLT_BLUETOOTH_HCI_H4_WITH_PHDR) && defined(HAVE_PCAP_BLUETOOTH_H)
{ bt_if_print, DLT_BLUETOOTH_HCI_H4_WITH_PHDR},
#endif
#ifdef DLT_LANE8023
{ lane_if_print, DLT_LANE8023 },
#endif
{ arcnet_if_print, DLT_ARCNET },
#ifdef DLT_ARCNET_LINUX
{ arcnet_linux_if_print, DLT_ARCNET_LINUX },
#endif
{ raw_if_print, DLT_RAW },
#ifdef DLT_IPV4
{ raw_if_print, DLT_IPV4 },
#endif
#ifdef DLT_IPV6
{ raw_if_print, DLT_IPV6 },
#endif
#ifdef HAVE_PCAP_USB_H
#ifdef DLT_USB_LINUX
{ usb_linux_48_byte_print, DLT_USB_LINUX},
#endif /* DLT_USB_LINUX */
#ifdef DLT_USB_LINUX_MMAPPED
{ usb_linux_64_byte_print, DLT_USB_LINUX_MMAPPED},
#endif /* DLT_USB_LINUX_MMAPPED */
#endif /* HAVE_PCAP_USB_H */
#ifdef DLT_SYMANTEC_FIREWALL
{ symantec_if_print, DLT_SYMANTEC_FIREWALL },
#endif
#ifdef DLT_C_HDLC
{ chdlc_if_print, DLT_C_HDLC },
#endif
#ifdef DLT_HDLC
{ chdlc_if_print, DLT_HDLC },
#endif
#ifdef DLT_PPP_ETHER
{ pppoe_if_print, DLT_PPP_ETHER },
#endif
#if defined(DLT_PFLOG) && defined(HAVE_NET_IF_PFLOG_H)
{ pflog_if_print, DLT_PFLOG },
#endif
{ token_if_print, DLT_IEEE802 },
{ fddi_if_print, DLT_FDDI },
#ifdef DLT_LINUX_SLL
{ sll_if_print, DLT_LINUX_SLL },
#endif
#ifdef DLT_FR
{ fr_if_print, DLT_FR },
#endif
#ifdef DLT_FRELAY
{ fr_if_print, DLT_FRELAY },
#endif
#ifdef DLT_MFR
{ mfr_if_print, DLT_MFR },
#endif
{ atm_if_print, DLT_ATM_RFC1483 },
#ifdef DLT_SUNATM
{ sunatm_if_print, DLT_SUNATM },
#endif
#ifdef DLT_ENC
{ enc_if_print, DLT_ENC },
#endif
{ sl_if_print, DLT_SLIP },
#ifdef DLT_SLIP_BSDOS
{ sl_bsdos_if_print, DLT_SLIP_BSDOS },
#endif
#ifdef DLT_LTALK
{ ltalk_if_print, DLT_LTALK },
#endif
#ifdef DLT_JUNIPER_ATM1
{ juniper_atm1_print, DLT_JUNIPER_ATM1 },
#endif
#ifdef DLT_JUNIPER_ATM2
{ juniper_atm2_print, DLT_JUNIPER_ATM2 },
#endif
#ifdef DLT_JUNIPER_MFR
{ juniper_mfr_print, DLT_JUNIPER_MFR },
#endif
#ifdef DLT_JUNIPER_MLFR
{ juniper_mlfr_print, DLT_JUNIPER_MLFR },
#endif
#ifdef DLT_JUNIPER_MLPPP
{ juniper_mlppp_print, DLT_JUNIPER_MLPPP },
#endif
#ifdef DLT_JUNIPER_PPPOE
{ juniper_pppoe_print, DLT_JUNIPER_PPPOE },
#endif
#ifdef DLT_JUNIPER_PPPOE_ATM
{ juniper_pppoe_atm_print, DLT_JUNIPER_PPPOE_ATM },
#endif
#ifdef DLT_JUNIPER_GGSN
{ juniper_ggsn_print, DLT_JUNIPER_GGSN },
#endif
#ifdef DLT_JUNIPER_ES
{ juniper_es_print, DLT_JUNIPER_ES },
#endif
#ifdef DLT_JUNIPER_MONITOR
{ juniper_monitor_print, DLT_JUNIPER_MONITOR },
#endif
#ifdef DLT_JUNIPER_SERVICES
{ juniper_services_print, DLT_JUNIPER_SERVICES },
#endif
#ifdef DLT_JUNIPER_ETHER
{ juniper_ether_print, DLT_JUNIPER_ETHER },
#endif
#ifdef DLT_JUNIPER_PPP
{ juniper_ppp_print, DLT_JUNIPER_PPP },
#endif
#ifdef DLT_JUNIPER_FRELAY
{ juniper_frelay_print, DLT_JUNIPER_FRELAY },
#endif
#ifdef DLT_JUNIPER_CHDLC
{ juniper_chdlc_print, DLT_JUNIPER_CHDLC },
#endif
#ifdef DLT_PKTAP
{ pktap_if_print, DLT_PKTAP },
#endif
#ifdef DLT_IEEE802_11_RADIO
{ ieee802_11_radio_if_print, DLT_IEEE802_11_RADIO },
#endif
#ifdef DLT_IEEE802_11
{ ieee802_11_if_print, DLT_IEEE802_11},
#endif
#ifdef DLT_IEEE802_11_RADIO_AVS
{ ieee802_11_radio_avs_if_print, DLT_IEEE802_11_RADIO_AVS },
#endif
#ifdef DLT_PRISM_HEADER
{ prism_if_print, DLT_PRISM_HEADER },
#endif
{ ppp_if_print, DLT_PPP },
#ifdef DLT_PPP_WITHDIRECTION
{ ppp_if_print, DLT_PPP_WITHDIRECTION },
#endif
#ifdef DLT_PPP_BSDOS
{ ppp_bsdos_if_print, DLT_PPP_BSDOS },
#endif
#ifdef DLT_PPP_SERIAL
{ ppp_hdlc_if_print, DLT_PPP_SERIAL },
#endif
{ NULL, 0 },
};
static void ndo_default_print(netdissect_options *ndo, const u_char *bp,
u_int length);
static void ndo_error(netdissect_options *ndo,
FORMAT_STRING(const char *fmt), ...)
NORETURN PRINTFLIKE(2, 3);
static void ndo_warning(netdissect_options *ndo,
FORMAT_STRING(const char *fmt), ...)
PRINTFLIKE(2, 3);
static int ndo_printf(netdissect_options *ndo,
FORMAT_STRING(const char *fmt), ...)
PRINTFLIKE(2, 3);
void
init_print(netdissect_options *ndo, uint32_t localnet, uint32_t mask,
uint32_t timezone_offset)
{
thiszone = timezone_offset;
init_addrtoname(ndo, localnet, mask);
init_checksum();
}
if_printer
lookup_printer(int type)
{
const struct printer *p;
for (p = printers; p->f; ++p)
if (type == p->type)
return p->f;
#if defined(DLT_USER2) && defined(DLT_PKTAP)
/*
* Apple incorrectly chose to use DLT_USER2 for their PKTAP
* header.
*
* We map DLT_PKTAP, whether it's DLT_USER2 as it is on Darwin-
* based OSes or the same value as LINKTYPE_PKTAP as it is on
* other OSes, to LINKTYPE_PKTAP, so files written with
* this version of libpcap for a DLT_PKTAP capture have a link-
* layer header type of LINKTYPE_PKTAP.
*
* However, files written on OS X Mavericks for a DLT_PKTAP
* capture have a link-layer header type of LINKTYPE_USER2.
* If we don't have a printer for DLT_USER2, and type is
* DLT_USER2, we look up the printer for DLT_PKTAP and use
* that.
*/
if (type == DLT_USER2) {
for (p = printers; p->f; ++p)
if (DLT_PKTAP == p->type)
return p->f;
}
#endif
return NULL;
/* NOTREACHED */
}
int
has_printer(int type)
{
return (lookup_printer(type) != NULL);
}
if_printer
get_if_printer(netdissect_options *ndo, int type)
{
const char *dltname;
if_printer printer;
printer = lookup_printer(type);
if (printer == NULL) {
dltname = pcap_datalink_val_to_name(type);
if (dltname != NULL)
(*ndo->ndo_error)(ndo,
"packet printing is not supported for link type %s: use -w",
dltname);
else
(*ndo->ndo_error)(ndo,
"packet printing is not supported for link type %d: use -w", type);
}
return printer;
}
void
pretty_print_packet(netdissect_options *ndo, const struct pcap_pkthdr *h,
const u_char *sp, u_int packets_captured)
{
u_int hdrlen;
if(ndo->ndo_packet_number)
ND_PRINT((ndo, "%5u ", packets_captured));
ts_print(ndo, &h->ts);
/*
* Some printers want to check that they're not walking off the
* end of the packet.
* Rather than pass it all the way down, we set this member
* of the netdissect_options structure.
*/
ndo->ndo_snapend = sp + h->caplen;
hdrlen = (ndo->ndo_if_printer)(ndo, h, sp);
/*
* Restore the original snapend, as a printer might have
* changed it.
*/
ndo->ndo_snapend = sp + h->caplen;
if (ndo->ndo_Xflag) {
/*
* Print the raw packet data in hex and ASCII.
*/
if (ndo->ndo_Xflag > 1) {
/*
* Include the link-layer header.
*/
hex_and_ascii_print(ndo, "\n\t", sp, h->caplen);
} else {
/*
* Don't include the link-layer header - and if
* we have nothing past the link-layer header,
* print nothing.
*/
if (h->caplen > hdrlen)
hex_and_ascii_print(ndo, "\n\t", sp + hdrlen,
h->caplen - hdrlen);
}
} else if (ndo->ndo_xflag) {
/*
* Print the raw packet data in hex.
*/
if (ndo->ndo_xflag > 1) {
/*
* Include the link-layer header.
*/
hex_print(ndo, "\n\t", sp, h->caplen);
} else {
/*
* Don't include the link-layer header - and if
* we have nothing past the link-layer header,
* print nothing.
*/
if (h->caplen > hdrlen)
hex_print(ndo, "\n\t", sp + hdrlen,
h->caplen - hdrlen);
}
} else if (ndo->ndo_Aflag) {
/*
* Print the raw packet data in ASCII.
*/
if (ndo->ndo_Aflag > 1) {
/*
* Include the link-layer header.
*/
ascii_print(ndo, sp, h->caplen);
} else {
/*
* Don't include the link-layer header - and if
* we have nothing past the link-layer header,
* print nothing.
*/
if (h->caplen > hdrlen)
ascii_print(ndo, sp + hdrlen, h->caplen - hdrlen);
}
}
ND_PRINT((ndo, "\n"));
}
/*
* By default, print the specified data out in hex and ASCII.
*/
static void
ndo_default_print(netdissect_options *ndo, const u_char *bp, u_int length)
{
hex_and_ascii_print(ndo, "\n\t", bp, length); /* pass on lf and indentation string */
}
/* VARARGS */
static void
ndo_error(netdissect_options *ndo, const char *fmt, ...)
{
va_list ap;
if(ndo->program_name)
(void)fprintf(stderr, "%s: ", ndo->program_name);
va_start(ap, fmt);
(void)vfprintf(stderr, fmt, ap);
va_end(ap);
if (*fmt) {
fmt += strlen(fmt);
if (fmt[-1] != '\n')
(void)fputc('\n', stderr);
}
nd_cleanup();
exit(1);
/* NOTREACHED */
}
/* VARARGS */
static void
ndo_warning(netdissect_options *ndo, const char *fmt, ...)
{
va_list ap;
if(ndo->program_name)
(void)fprintf(stderr, "%s: ", ndo->program_name);
(void)fprintf(stderr, "WARNING: ");
va_start(ap, fmt);
(void)vfprintf(stderr, fmt, ap);
va_end(ap);
if (*fmt) {
fmt += strlen(fmt);
if (fmt[-1] != '\n')
(void)fputc('\n', stderr);
}
}
static int
ndo_printf(netdissect_options *ndo, const char *fmt, ...)
{
va_list args;
int ret;
va_start(args, fmt);
ret = vfprintf(stdout, fmt, args);
va_end(args);
if (ret < 0)
ndo_error(ndo, "Unable to write output: %s", pcap_strerror(errno));
return (ret);
}
void
ndo_set_function_pointers(netdissect_options *ndo)
{
ndo->ndo_default_print=ndo_default_print;
ndo->ndo_printf=ndo_printf;
ndo->ndo_error=ndo_error;
ndo->ndo_warning=ndo_warning;
}
/*
* Local Variables:
* c-style: whitesmith
* c-basic-offset: 8
* End:
*/
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