mirror of
https://github.com/the-tcpdump-group/tcpdump.git
synced 2024-12-05 07:54:35 +08:00
147 lines
3.4 KiB
C
147 lines
3.4 KiB
C
/*
|
|
* Copyright (c) 1988-1997
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Copyright (c) 1998-2012 Michael Richardson <mcr@tcpdump.org>
|
|
* The TCPDUMP project
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <netdissect-stdinc.h>
|
|
#include "netdissect.h"
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
|
|
#ifdef USE_LIBSMI
|
|
#include <smi.h>
|
|
#endif
|
|
|
|
/*
|
|
* Initialize anything that must be initialized before dissecting
|
|
* packets.
|
|
*
|
|
* This should be called at the beginning of the program; it does
|
|
* not need to be called, and should not be called, for every
|
|
* netdissect_options structure.
|
|
*/
|
|
int
|
|
nd_init(char *errbuf, size_t errbuf_size)
|
|
{
|
|
#ifdef _WIN32
|
|
WORD wVersionRequested;
|
|
WSADATA wsaData;
|
|
int err;
|
|
|
|
/*
|
|
* Request Winsock 2.2; we expect Winsock 2.
|
|
*/
|
|
wVersionRequested = MAKEWORD(2, 2);
|
|
err = WSAStartup(wVersionRequested, &wsaData);
|
|
if (err != 0) {
|
|
strlcpy(errbuf, "Attempting to initialize Winsock failed",
|
|
errbuf_size);
|
|
return (-1);
|
|
}
|
|
#endif /* _WIN32 */
|
|
|
|
#ifdef USE_LIBSMI
|
|
/*
|
|
* XXX - should we just fail if this fails? Some of the
|
|
* libsmi calls may fail.
|
|
*/
|
|
smiInit("tcpdump");
|
|
#endif
|
|
|
|
/*
|
|
* Clears the error buffer, and uses it so we don't get
|
|
* "unused argument" warnings at compile time.
|
|
*/
|
|
strlcpy(errbuf, "", errbuf_size);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Clean up anything that ndo_init() did.
|
|
*/
|
|
void
|
|
nd_cleanup(void)
|
|
{
|
|
#ifdef USE_LIBSMI
|
|
/*
|
|
* This appears, in libsmi 0.4.8, to do nothing if smiInit()
|
|
* wasn't done or failed, so we call it unconditionally.
|
|
*/
|
|
smiExit();
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
/*
|
|
* Undo the WSAStartup() call above.
|
|
*/
|
|
WSACleanup();
|
|
#endif
|
|
}
|
|
|
|
int
|
|
nd_have_smi_support(void)
|
|
{
|
|
#ifdef USE_LIBSMI
|
|
return (1);
|
|
#else
|
|
return (0);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Indicates whether an SMI module has been loaded, so that we can use
|
|
* libsmi to translate OIDs.
|
|
*/
|
|
int nd_smi_module_loaded;
|
|
|
|
int
|
|
nd_load_smi_module(const char *module, char *errbuf, size_t errbuf_size)
|
|
{
|
|
#ifdef USE_LIBSMI
|
|
if (smiLoadModule(module) == 0) {
|
|
snprintf(errbuf, errbuf_size, "could not load MIB module %s",
|
|
module);
|
|
return (-1);
|
|
}
|
|
nd_smi_module_loaded = 1;
|
|
return (0);
|
|
#else
|
|
snprintf(errbuf, errbuf_size, "MIB module %s not loaded: no libsmi support",
|
|
module);
|
|
return (-1);
|
|
#endif
|
|
}
|
|
|
|
const char *
|
|
nd_smi_version_string(void)
|
|
{
|
|
#ifdef USE_LIBSMI
|
|
return (smi_version_string);
|
|
#else
|
|
return (NULL);
|
|
#endif
|
|
}
|