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/**
* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
* http://www.ntop.org
*
* Copyright (C) 2005 Burton Strauss <burton@ntopsupport.com>
*
* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
A bit ugly...
dlfcn is referenced in ntop.h, w/o the __USE_GNU (i.e. w/o the GNU
extensions). In FreeBSD it doesn't matter, but for Linux it does.
I don't want to chase that bug-a-boo, but I do need the extension
so dladdr is available.
Hence this special routine w __USE_GNU and w/o ntop.h
If you need anything from regular ntop, remember we don't have ntop.h,
so you will have to copy the things you need from globals-defines.h and
globals-core.h
*/
#ifndef WIN32
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#ifndef __USE_GNU
#define __USE_GNU
#endif
#include <dlfcn.h>
#include "config.h"
/* Forward */
int getDynamicLoadPaths(char *main, int mainLen, char *lib, int libLen, char *env, int envLen);
/* Copied declarations */
extern void welcome(FILE * fp);
#define safe_strncat(a, b, c) _safe_strncat(__FILE__, __LINE__, a, b, c)
extern int _safe_strncat(char* file, int line,
char* dest, size_t sizeofdest,
char* src);
//extern void traceEvent(int eventTraceLevel, char* file,
// int line, char * format, ...)
// __attribute__ ((format (printf, 4, 5)));
/*
* Used in traceEvent()
*/
//#define CONST_ALWAYSDISPLAY_TRACE_LEVEL -1
//#define CONST_FATALERROR_TRACE_LEVEL 0
//#define CONST_ERROR_TRACE_LEVEL 1
//#define CONST_WARNING_TRACE_LEVEL 2
//#define CONST_INFO_TRACE_LEVEL 3
//#define CONST_NOISY_TRACE_LEVEL 4
//#define CONST_TRACE_ALWAYSDISPLAY CONST_ALWAYSDISPLAY_TRACE_LEVEL, __FILE__, __LINE__
//#define CONST_TRACE_FATALERROR CONST_FATALERROR_TRACE_LEVEL, __FILE__, __LINE__
//#define CONST_TRACE_ERROR CONST_ERROR_TRACE_LEVEL, __FILE__, __LINE__
//#define CONST_TRACE_WARNING CONST_WARNING_TRACE_LEVEL, __FILE__, __LINE__
//#define CONST_TRACE_INFO CONST_INFO_TRACE_LEVEL, __FILE__, __LINE__
//#define CONST_TRACE_NOISY CONST_NOISY_TRACE_LEVEL, __FILE__, __LINE__
/* ************************************************************************ */
int getDynamicLoadPaths(char *main, int mainLen, char *lib, int libLen, char *env, int envLen) {
int rc = 0;
#ifdef HAVE_DLADDR
char *lastslash, *_env;
Dl_info info;
memset(main, 0, mainLen);
memset(lib, 0, libLen);
memset(env, 0, envLen);
memset(&info, 0, sizeof(info));
rc = dladdr((void *)&welcome, &info);
if(rc == 0)
return(-2);
strncpy(main, info.dli_fname, mainLen);
lastslash = strrchr(main, '/');
if(lastslash != NULL) lastslash[0] = '\0';
rc = dladdr((void *)&getDynamicLoadPaths, &info);
if(rc == 0)
return(-3);
strncpy(lib, info.dli_fname, libLen);
lastslash = strrchr(lib, '/');
if(lastslash != NULL) lastslash[0] = '\0';
#ifdef DARWIN
_env = getenv("DYLD_LIBRARY_PATH");
if((_env != NULL) && (_env[0] != '\0')) {
strncpy(env, "DYLD_LIBRARY_PATH: ", envLen);
safe_strncat(env, envLen, _env);
}
#endif
_env = getenv("LD_LIBRARY_PATH");
if((_env != NULL) && (_env[0] != '\0')) {
safe_strncat(env, envLen, "LD_LIBRARY_PATH ");
safe_strncat(env, envLen, _env);
}
return(0);
#else
return(-1); /* "failed" */
#endif /* HAVE_DLADDR */
}
#endif /* WIN32 */
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