mirror of
https://github.com/the-tcpdump-group/tcpdump.git
synced 2024-11-23 18:14:29 +08:00
1ed63b5d06
We require an environment with a C99-compatible snprintf(), so we don't need to work around older implementations. Make the configuration process fail if we don't have snprintf() and vsnprintf(). We require at least VS 2015, so we don't have to check for _MSC_VER >= 1400. Make the build fail if we don't have at least VS 2015. We apparently do, however, have to use __inline, as the VS 2015 documentation doesn't meaning plain old "inline". Update a comment.
276 lines
6.8 KiB
C
276 lines
6.8 KiB
C
/*
|
|
* Copyright (c) 1994, 1995, 1996
|
|
* 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.
|
|
*
|
|
* Contributed by Brad Parker (brad@fcr.com).
|
|
*/
|
|
|
|
/* \summary: Novell IPX printer */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include "netdissect-stdinc.h"
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "netdissect.h"
|
|
#include "addrtoname.h"
|
|
#include "extract.h"
|
|
|
|
/* well-known sockets */
|
|
#define IPX_SKT_NCP 0x0451
|
|
#define IPX_SKT_SAP 0x0452
|
|
#define IPX_SKT_RIP 0x0453
|
|
#define IPX_SKT_NETBIOS 0x0455
|
|
#define IPX_SKT_DIAGNOSTICS 0x0456
|
|
#define IPX_SKT_NWLINK_DGM 0x0553 /* NWLink datagram, may contain SMB */
|
|
#define IPX_SKT_EIGRP 0x85be /* Cisco EIGRP over IPX */
|
|
|
|
/* IPX transport header */
|
|
struct ipxHdr {
|
|
nd_uint16_t cksum; /* Checksum */
|
|
nd_uint16_t length; /* Length, in bytes, including header */
|
|
nd_uint8_t tCtl; /* Transport Control (i.e. hop count) */
|
|
nd_uint8_t pType; /* Packet Type (i.e. level 2 protocol) */
|
|
nd_uint32_t dstNet; /* destination net */
|
|
nd_byte dstNode[6]; /* destination node */
|
|
nd_uint16_t dstSkt; /* destination socket */
|
|
nd_uint32_t srcNet; /* source net */
|
|
nd_byte srcNode[6]; /* source node */
|
|
nd_uint16_t srcSkt; /* source socket */
|
|
};
|
|
|
|
#define ipxSize 30
|
|
|
|
static const char *ipxaddr_string(netdissect_options *, uint32_t, const u_char *);
|
|
static void ipx_decode(netdissect_options *, const struct ipxHdr *, const u_char *, u_int);
|
|
static void ipx_sap_print(netdissect_options *, const u_char *, u_int);
|
|
static void ipx_rip_print(netdissect_options *, const u_char *, u_int);
|
|
|
|
/*
|
|
* Print IPX datagram packets.
|
|
*/
|
|
void
|
|
ipx_print(netdissect_options *ndo, const u_char *p, u_int length)
|
|
{
|
|
const struct ipxHdr *ipx = (const struct ipxHdr *)p;
|
|
|
|
ndo->ndo_protocol = "ipx";
|
|
if (!ndo->ndo_eflag)
|
|
ND_PRINT("IPX ");
|
|
|
|
ND_TCHECK_2(ipx->srcSkt);
|
|
ND_PRINT("%s.%04x > ",
|
|
ipxaddr_string(ndo, GET_BE_U_4(ipx->srcNet), ipx->srcNode),
|
|
GET_BE_U_2(ipx->srcSkt));
|
|
|
|
ND_PRINT("%s.%04x: ",
|
|
ipxaddr_string(ndo, GET_BE_U_4(ipx->dstNet), ipx->dstNode),
|
|
GET_BE_U_2(ipx->dstSkt));
|
|
|
|
/* take length from ipx header */
|
|
ND_TCHECK_2(ipx->length);
|
|
length = GET_BE_U_2(ipx->length);
|
|
|
|
if (length < ipxSize) {
|
|
ND_PRINT("[length %u < %u]", length, ipxSize);
|
|
nd_print_invalid(ndo);
|
|
return;
|
|
}
|
|
ipx_decode(ndo, ipx, p + ipxSize, length - ipxSize);
|
|
return;
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static const char *
|
|
ipxaddr_string(netdissect_options *ndo, uint32_t net, const u_char *node)
|
|
{
|
|
static char line[256];
|
|
|
|
snprintf(line, sizeof(line), "%08x.%02x:%02x:%02x:%02x:%02x:%02x",
|
|
net, GET_U_1(node), GET_U_1(node + 1),
|
|
GET_U_1(node + 2), GET_U_1(node + 3),
|
|
GET_U_1(node + 4), GET_U_1(node + 5));
|
|
|
|
return line;
|
|
}
|
|
|
|
static void
|
|
ipx_decode(netdissect_options *ndo, const struct ipxHdr *ipx, const u_char *datap, u_int length)
|
|
{
|
|
u_short dstSkt;
|
|
|
|
dstSkt = GET_BE_U_2(ipx->dstSkt);
|
|
switch (dstSkt) {
|
|
case IPX_SKT_NCP:
|
|
ND_PRINT("ipx-ncp %u", length);
|
|
break;
|
|
case IPX_SKT_SAP:
|
|
ipx_sap_print(ndo, datap, length);
|
|
break;
|
|
case IPX_SKT_RIP:
|
|
ipx_rip_print(ndo, datap, length);
|
|
break;
|
|
case IPX_SKT_NETBIOS:
|
|
ND_PRINT("ipx-netbios %u", length);
|
|
#ifdef ENABLE_SMB
|
|
ipx_netbios_print(ndo, datap, length);
|
|
#endif
|
|
break;
|
|
case IPX_SKT_DIAGNOSTICS:
|
|
ND_PRINT("ipx-diags %u", length);
|
|
break;
|
|
case IPX_SKT_NWLINK_DGM:
|
|
ND_PRINT("ipx-nwlink-dgm %u", length);
|
|
#ifdef ENABLE_SMB
|
|
ipx_netbios_print(ndo, datap, length);
|
|
#endif
|
|
break;
|
|
case IPX_SKT_EIGRP:
|
|
eigrp_print(ndo, datap, length);
|
|
break;
|
|
default:
|
|
ND_PRINT("ipx-#%x %u", dstSkt, length);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ipx_sap_print(netdissect_options *ndo, const u_char *ipx, u_int length)
|
|
{
|
|
int command, i;
|
|
|
|
ND_TCHECK_2(ipx);
|
|
command = GET_BE_U_2(ipx);
|
|
ipx += 2;
|
|
length -= 2;
|
|
|
|
switch (command) {
|
|
case 1:
|
|
case 3:
|
|
if (command == 1)
|
|
ND_PRINT("ipx-sap-req");
|
|
else
|
|
ND_PRINT("ipx-sap-nearest-req");
|
|
|
|
ND_TCHECK_2(ipx);
|
|
ND_PRINT(" %s", ipxsap_string(ndo, htons(GET_BE_U_2(ipx))));
|
|
break;
|
|
|
|
case 2:
|
|
case 4:
|
|
if (command == 2)
|
|
ND_PRINT("ipx-sap-resp");
|
|
else
|
|
ND_PRINT("ipx-sap-nearest-resp");
|
|
|
|
for (i = 0; i < 8 && length != 0; i++) {
|
|
ND_TCHECK_2(ipx);
|
|
if (length < 2)
|
|
goto trunc;
|
|
ND_PRINT(" %s '", ipxsap_string(ndo, htons(GET_BE_U_2(ipx))));
|
|
ipx += 2;
|
|
length -= 2;
|
|
if (length < 48) {
|
|
ND_PRINT("'");
|
|
goto trunc;
|
|
}
|
|
if (nd_printzp(ndo, ipx, 48, ndo->ndo_snapend)) {
|
|
ND_PRINT("'");
|
|
goto trunc;
|
|
}
|
|
ND_PRINT("'");
|
|
ipx += 48;
|
|
length -= 48;
|
|
/*
|
|
* 10 bytes of IPX address.
|
|
*/
|
|
ND_TCHECK_LEN(ipx, 10);
|
|
if (length < 10)
|
|
goto trunc;
|
|
ND_PRINT(" addr %s",
|
|
ipxaddr_string(ndo, GET_BE_U_4(ipx), ipx + 4));
|
|
ipx += 10;
|
|
length -= 10;
|
|
/*
|
|
* 2 bytes of socket and 2 bytes of number of intermediate
|
|
* networks.
|
|
*/
|
|
ND_TCHECK_4(ipx);
|
|
if (length < 4)
|
|
goto trunc;
|
|
ipx += 4;
|
|
length -= 4;
|
|
}
|
|
break;
|
|
default:
|
|
ND_PRINT("ipx-sap-?%x", command);
|
|
break;
|
|
}
|
|
return;
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|
|
|
|
static void
|
|
ipx_rip_print(netdissect_options *ndo, const u_char *ipx, u_int length)
|
|
{
|
|
int command, i;
|
|
|
|
ND_TCHECK_2(ipx);
|
|
command = GET_BE_U_2(ipx);
|
|
ipx += 2;
|
|
length -= 2;
|
|
|
|
switch (command) {
|
|
case 1:
|
|
ND_PRINT("ipx-rip-req");
|
|
if (length != 0) {
|
|
if (length < 8)
|
|
goto trunc;
|
|
ND_TCHECK_8(ipx);
|
|
ND_PRINT(" %08x/%u.%u", GET_BE_U_4(ipx),
|
|
GET_BE_U_2(ipx + 4), GET_BE_U_2(ipx + 6));
|
|
}
|
|
break;
|
|
case 2:
|
|
ND_PRINT("ipx-rip-resp");
|
|
for (i = 0; i < 50 && length != 0; i++) {
|
|
if (length < 8)
|
|
goto trunc;
|
|
ND_TCHECK_8(ipx);
|
|
ND_PRINT(" %08x/%u.%u", GET_BE_U_4(ipx),
|
|
GET_BE_U_2(ipx + 4), GET_BE_U_2(ipx + 6));
|
|
|
|
ipx += 8;
|
|
length -= 8;
|
|
}
|
|
break;
|
|
default:
|
|
ND_PRINT("ipx-rip-?%x", command);
|
|
break;
|
|
}
|
|
return;
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|