dso_dlfcn.c revision 9dc0df1bac950d6e491f9a7c7e4888f2b301cb15
/* dso_dlfcn.c -*- mode:C; c-file-style: "eay" -*- */
/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
* project 2000.
*/
/* ====================================================================
* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <stdio.h>
#include "cryptlib.h"
#ifndef DSO_DLFCN
DSO_METHOD *DSO_METHOD_dlfcn(void)
{
return NULL;
}
#else
#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#endif
/* Part of the hack in "dlfcn_load" ... */
#define DSO_MAX_TRANSLATED_SIZE 256
#if 0
#endif
const char *filespec2);
static DSO_METHOD dso_meth_dlfcn = {
"OpenSSL 'dlfcn' shared library method",
/* For now, "unbind" doesn't exist */
#if 0
NULL, /* unbind_var */
NULL, /* unbind_func */
#endif
NULL, /* ctrl */
NULL, /* init */
NULL /* finish */
};
DSO_METHOD *DSO_METHOD_dlfcn(void)
{
return(&dso_meth_dlfcn);
}
/* Prior to using the dlopen() function, we should decide on the flag
* we send. There's a few different ways of doing this and it's a
* messy venn-diagram to match up which platforms support what. So
* as we don't have autoconf yet, I'm implementing a hack that could
* be hacked further relatively easily to deal with cases as we find
* them. Initially this is to cope with OpenBSD. */
#if defined(__OpenBSD__) || defined(__NetBSD__)
# ifdef DL_LAZY
# define DLOPEN_FLAG DL_LAZY
# else
# ifdef RTLD_NOW
# define DLOPEN_FLAG RTLD_NOW
# else
# define DLOPEN_FLAG 0
# endif
# endif
#else
# ifdef OPENSSL_SYS_SUNOS
# define DLOPEN_FLAG 1
# else
# endif
#endif
/* For this DSO_METHOD, our meth_data STACK will contain;
* (i) the handle (void*) returned from dlopen().
*/
{
/* See applicable comments in dso_dl.c */
int flags = DLOPEN_FLAG;
{
goto err;
}
#ifdef RTLD_GLOBAL
flags |= RTLD_GLOBAL;
#endif
{
goto err;
}
{
goto err;
}
/* Success */
return(1);
err:
/* Cleanup! */
return(0);
}
{
void *ptr;
{
return(0);
}
return(1);
{
/* Should push the value back onto the stack in
* case of a retry. */
return(0);
}
/* For now I'm not aware of any errors associated with dlclose() */
return(1);
}
{
{
return(NULL);
}
{
return(NULL);
}
{
return(NULL);
}
{
return(NULL);
}
return(sym);
}
{
void *ptr;
{
return(NULL);
}
{
return(NULL);
}
{
return(NULL);
}
{
return(NULL);
}
return(sym);
}
const char *filespec2)
{
char *merged;
{
return(NULL);
}
/* If the first file specification is a rooted path, it rules.
same goes if the second file specification is missing. */
{
if(!merged)
{
return(NULL);
}
}
/* If the first file specification is missing, the second one rules. */
else if (!filespec1)
{
if(!merged)
{
return(NULL);
}
}
else
/* This part isn't as trivial as it looks. It assumes that
the second file specification really is a directory, and
makes no checks whatsoever. Therefore, the result becomes
the concatenation of filespec2 followed by a slash followed
by filespec1. */
{
{
spec2len--;
len--;
}
if(!merged)
{
return(NULL);
}
}
return(merged);
}
{
char *translated;
if(transform)
{
}
if(translated == NULL)
{
return(NULL);
}
if(transform)
{
else
}
else
return(translated);
}
#endif /* DSO_DLFCN */