sl@0: /* dso_lib.c -*- mode:C; c-file-style: "eay" -*- */
sl@0: /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
sl@0:  * project 2000.
sl@0:  */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    licensing@OpenSSL.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  * ====================================================================
sl@0:  *
sl@0:  * This product includes cryptographic software written by Eric Young
sl@0:  * (eay@cryptsoft.com).  This product includes software written by Tim
sl@0:  * Hudson (tjh@cryptsoft.com).
sl@0:  *
sl@0:  */
sl@0:  /*
sl@0:  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <openssl/crypto.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/dso.h>
sl@0: #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
sl@0: #include "libcrypto_wsd_macros.h"
sl@0: #include "libcrypto_wsd.h"
sl@0: #endif
sl@0: #ifndef EMULATOR
sl@0: static DSO_METHOD *default_DSO_meth = NULL;
sl@0: #else
sl@0: GET_STATIC_VAR_FROM_TLS(default_DSO_meth,dso_lib,DSO_METHOD *)
sl@0: #define default_DSO_meth (*GET_WSD_VAR_NAME(default_DSO_meth,dso_lib, s)())
sl@0: #endif
sl@0: 
sl@0: EXPORT_C DSO *DSO_new(void)
sl@0: 	{
sl@0: 	return(DSO_new_method(NULL));
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void DSO_set_default_method(DSO_METHOD *meth)
sl@0: 	{
sl@0: 	default_DSO_meth = meth;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C DSO_METHOD *DSO_get_default_method(void)
sl@0: 	{
sl@0: 	return(default_DSO_meth);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C DSO_METHOD *DSO_get_method(DSO *dso)
sl@0: 	{
sl@0: 	return(dso->meth);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C DSO_METHOD *DSO_set_method(DSO *dso, DSO_METHOD *meth)
sl@0: 	{
sl@0: 	DSO_METHOD *mtmp;
sl@0: 	mtmp = dso->meth;
sl@0: 	dso->meth = meth;
sl@0: 	return(mtmp);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C DSO *DSO_new_method(DSO_METHOD *meth)
sl@0: 	{
sl@0: 	DSO *ret;
sl@0: 
sl@0: 	if(default_DSO_meth == NULL)
sl@0: 		/* We default to DSO_METH_openssl() which in turn defaults
sl@0: 		 * to stealing the "best available" method. Will fallback
sl@0: 		 * to DSO_METH_null() in the worst case. */
sl@0: 		default_DSO_meth = DSO_METHOD_openssl();
sl@0: 	ret = (DSO *)OPENSSL_malloc(sizeof(DSO));
sl@0: 	if(ret == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_NEW_METHOD,ERR_R_MALLOC_FAILURE);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	memset(ret, 0, sizeof(DSO));
sl@0: 	ret->meth_data = sk_new_null();
sl@0: 	if(ret->meth_data == NULL)
sl@0: 		{
sl@0: 		/* sk_new doesn't generate any errors so we do */
sl@0: 		DSOerr(DSO_F_DSO_NEW_METHOD,ERR_R_MALLOC_FAILURE);
sl@0: 		OPENSSL_free(ret);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	if(meth == NULL)
sl@0: 		ret->meth = default_DSO_meth;
sl@0: 	else
sl@0: 		ret->meth = meth;
sl@0: 	ret->references = 1;
sl@0: 	if((ret->meth->init != NULL) && !ret->meth->init(ret))
sl@0: 		{
sl@0: 		OPENSSL_free(ret);
sl@0: 		ret=NULL;
sl@0: 		}
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int DSO_free(DSO *dso)
sl@0: 	{
sl@0:         int i;
sl@0:  
sl@0: 	if(dso == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_FREE,ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		return(0);
sl@0: 		}
sl@0:  
sl@0: 	i=CRYPTO_add(&dso->references,-1,CRYPTO_LOCK_DSO);
sl@0: #ifdef REF_PRINT
sl@0: 	REF_PRINT("DSO",dso);
sl@0: #endif
sl@0: 	if(i > 0) return(1);
sl@0: #ifdef REF_CHECK
sl@0: 	if(i < 0)
sl@0: 		{
sl@0: 		fprintf(stderr,"DSO_free, bad reference count\n");
sl@0: 		abort();
sl@0: 		}
sl@0: #endif
sl@0: 
sl@0: 	if((dso->meth->dso_unload != NULL) && !dso->meth->dso_unload(dso))
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_FREE,DSO_R_UNLOAD_FAILED);
sl@0: 		return(0);
sl@0: 		}
sl@0:  
sl@0: 	if((dso->meth->finish != NULL) && !dso->meth->finish(dso))
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_FREE,DSO_R_FINISH_FAILED);
sl@0: 		return(0);
sl@0: 		}
sl@0: 	
sl@0: 	sk_free(dso->meth_data);
sl@0: 	if(dso->filename != NULL)
sl@0: 		OPENSSL_free(dso->filename);
sl@0: 	if(dso->loaded_filename != NULL)
sl@0: 		OPENSSL_free(dso->loaded_filename);
sl@0:  
sl@0: 	OPENSSL_free(dso);
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int DSO_flags(DSO *dso)
sl@0: 	{
sl@0: 	return((dso == NULL) ? 0 : dso->flags);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: EXPORT_C int DSO_up_ref(DSO *dso)
sl@0: 	{
sl@0: 	if (dso == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_UP_REF,ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		return(0);
sl@0: 		}
sl@0: 
sl@0: 	CRYPTO_add(&dso->references,1,CRYPTO_LOCK_DSO);
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C DSO *DSO_load(DSO *dso, const char *filename, DSO_METHOD *meth, int flags)
sl@0: 	{
sl@0: 	DSO *ret;
sl@0: 	int allocated = 0;
sl@0: 
sl@0: 	if(dso == NULL)
sl@0: 		{
sl@0: 		ret = DSO_new_method(meth);
sl@0: 		if(ret == NULL)
sl@0: 			{
sl@0: 			DSOerr(DSO_F_DSO_LOAD,ERR_R_MALLOC_FAILURE);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		allocated = 1;
sl@0: 		/* Pass the provided flags to the new DSO object */
sl@0: 		if(DSO_ctrl(ret, DSO_CTRL_SET_FLAGS, flags, NULL) < 0)
sl@0: 			{
sl@0: 			DSOerr(DSO_F_DSO_LOAD,DSO_R_CTRL_FAILED);
sl@0: 			goto err;
sl@0: 			}
sl@0: 		}
sl@0: 	else
sl@0: 		ret = dso;
sl@0: 	/* Don't load if we're currently already loaded */
sl@0: 	if(ret->filename != NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_LOAD,DSO_R_DSO_ALREADY_LOADED);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	/* filename can only be NULL if we were passed a dso that already has
sl@0: 	 * one set. */
sl@0: 	if(filename != NULL)
sl@0: 		if(!DSO_set_filename(ret, filename))
sl@0: 			{
sl@0: 			DSOerr(DSO_F_DSO_LOAD,DSO_R_SET_FILENAME_FAILED);
sl@0: 			goto err;
sl@0: 			}
sl@0: 	filename = ret->filename;
sl@0: 	if(filename == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_LOAD,DSO_R_NO_FILENAME);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	if(ret->meth->dso_load == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_LOAD,DSO_R_UNSUPPORTED);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	if(!ret->meth->dso_load(ret))
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_LOAD,DSO_R_LOAD_FAILED);
sl@0: 		goto err;
sl@0: 		}
sl@0: 	/* Load succeeded */
sl@0: 	return(ret);
sl@0: err:
sl@0: 	if(allocated)
sl@0: 		DSO_free(ret);
sl@0: 	return(NULL);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void *DSO_bind_var(DSO *dso, const char *symname)
sl@0: 	{
sl@0: 	void *ret = NULL;
sl@0: 
sl@0: 	if((dso == NULL) || (symname == NULL))
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	if(dso->meth->dso_bind_var == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_BIND_VAR,DSO_R_UNSUPPORTED);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	if((ret = dso->meth->dso_bind_var(dso, symname)) == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_BIND_VAR,DSO_R_SYM_FAILURE);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	/* Success */
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C DSO_FUNC_TYPE DSO_bind_func(DSO *dso, const char *symname)
sl@0: 	{
sl@0: 	DSO_FUNC_TYPE ret = NULL;
sl@0: 
sl@0: 	if((dso == NULL) || (symname == NULL))
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	if(dso->meth->dso_bind_func == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_BIND_FUNC,DSO_R_UNSUPPORTED);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	if((ret = dso->meth->dso_bind_func(dso, symname)) == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_BIND_FUNC,DSO_R_SYM_FAILURE);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	/* Success */
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: /* I don't really like these *_ctrl functions very much to be perfectly
sl@0:  * honest. For one thing, I think I have to return a negative value for
sl@0:  * any error because possible DSO_ctrl() commands may return values
sl@0:  * such as "size"s that can legitimately be zero (making the standard
sl@0:  * "if(DSO_cmd(...))" form that works almost everywhere else fail at
sl@0:  * odd times. I'd prefer "output" values to be passed by reference and
sl@0:  * the return value as success/failure like usual ... but we conform
sl@0:  * when we must... :-) */
sl@0: EXPORT_C long DSO_ctrl(DSO *dso, int cmd, long larg, void *parg)
sl@0: 	{
sl@0: 	if(dso == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_CTRL,ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		return(-1);
sl@0: 		}
sl@0: 	/* We should intercept certain generic commands and only pass control
sl@0: 	 * to the method-specific ctrl() function if it's something we don't
sl@0: 	 * handle. */
sl@0: 	switch(cmd)
sl@0: 		{
sl@0: 	case DSO_CTRL_GET_FLAGS:
sl@0: 		return dso->flags;
sl@0: 	case DSO_CTRL_SET_FLAGS:
sl@0: 		dso->flags = (int)larg;
sl@0: 		return(0);
sl@0: 	case DSO_CTRL_OR_FLAGS:
sl@0: 		dso->flags |= (int)larg;
sl@0: 		return(0);
sl@0: 	default:
sl@0: 		break;
sl@0: 		}
sl@0: 	if((dso->meth == NULL) || (dso->meth->dso_ctrl == NULL))
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_CTRL,DSO_R_UNSUPPORTED);
sl@0: 		return(-1);
sl@0: 		}
sl@0: 	return(dso->meth->dso_ctrl(dso,cmd,larg,parg));
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int DSO_set_name_converter(DSO *dso, DSO_NAME_CONVERTER_FUNC cb,
sl@0: 			DSO_NAME_CONVERTER_FUNC *oldcb)
sl@0: 	{
sl@0: 	if(dso == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_SET_NAME_CONVERTER,
sl@0: 				ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		return(0);
sl@0: 		}
sl@0: 	if(oldcb)
sl@0: 		*oldcb = dso->name_converter;
sl@0: 	dso->name_converter = cb;
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C const char *DSO_get_filename(DSO *dso)
sl@0: 	{
sl@0: 	if(dso == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_GET_FILENAME,ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	return(dso->filename);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C int DSO_set_filename(DSO *dso, const char *filename)
sl@0: 	{
sl@0: 	char *copied;
sl@0: 
sl@0: 	if((dso == NULL) || (filename == NULL))
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_SET_FILENAME,ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		return(0);
sl@0: 		}
sl@0: 	if(dso->loaded_filename)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_SET_FILENAME,DSO_R_DSO_ALREADY_LOADED);
sl@0: 		return(0);
sl@0: 		}
sl@0: 	/* We'll duplicate filename */
sl@0: 	copied = OPENSSL_malloc(strlen(filename) + 1);
sl@0: 	if(copied == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_SET_FILENAME,ERR_R_MALLOC_FAILURE);
sl@0: 		return(0);
sl@0: 		}
sl@0: 	BUF_strlcpy(copied, filename, strlen(filename) + 1);
sl@0: 	if(dso->filename)
sl@0: 		OPENSSL_free(dso->filename);
sl@0: 	dso->filename = copied;
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C char *DSO_merge(DSO *dso, const char *filespec1, const char *filespec2)
sl@0: 	{
sl@0: 	char *result = NULL;
sl@0: 
sl@0: 	if(dso == NULL || filespec1 == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_MERGE,ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	if(filespec1 == NULL)
sl@0: 		filespec1 = dso->filename;
sl@0: 	if(filespec1 == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_MERGE,DSO_R_NO_FILE_SPECIFICATION);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	if((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0)
sl@0: 		{
sl@0: 		if(dso->merger != NULL)
sl@0: 			result = dso->merger(dso, filespec1, filespec2);
sl@0: 		else if(dso->meth->dso_merger != NULL)
sl@0: 			result = dso->meth->dso_merger(dso,
sl@0: 				filespec1, filespec2);
sl@0: 		}
sl@0: 	return(result);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C char *DSO_convert_filename(DSO *dso, const char *filename)
sl@0: 	{
sl@0: 	char *result = NULL;
sl@0: 
sl@0: 	if(dso == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_CONVERT_FILENAME,ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	if(filename == NULL)
sl@0: 		filename = dso->filename;
sl@0: 	if(filename == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_CONVERT_FILENAME,DSO_R_NO_FILENAME);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	if((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0)
sl@0: 		{
sl@0: 		if(dso->name_converter != NULL)
sl@0: 			result = dso->name_converter(dso, filename);
sl@0: 		else if(dso->meth->dso_name_converter != NULL)
sl@0: 			result = dso->meth->dso_name_converter(dso, filename);
sl@0: 		}
sl@0: 	if(result == NULL)
sl@0: 		{
sl@0: 		result = OPENSSL_malloc(strlen(filename) + 1);
sl@0: 		if(result == NULL)
sl@0: 			{
sl@0: 			DSOerr(DSO_F_DSO_CONVERT_FILENAME,
sl@0: 					ERR_R_MALLOC_FAILURE);
sl@0: 			return(NULL);
sl@0: 			}
sl@0: 		BUF_strlcpy(result, filename, strlen(filename) + 1);
sl@0: 		}
sl@0: 	return(result);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C const char *DSO_get_loaded_filename(DSO *dso)
sl@0: 	{
sl@0: 	if(dso == NULL)
sl@0: 		{
sl@0: 		DSOerr(DSO_F_DSO_GET_LOADED_FILENAME,
sl@0: 				ERR_R_PASSED_NULL_PARAMETER);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	return(dso->loaded_filename);
sl@0: 	}