-/* dso_lib.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
- * the documentation and/or other materials provided with the
- * 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).
+ * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
-#include <stdio.h>
-#include <openssl/crypto.h>
-#include "cryptlib.h"
-#include <openssl/dso.h>
+#include "dso_locl.h"
static DSO_METHOD *default_DSO_meth = NULL;
-DSO *DSO_new(void)
-{
- return (DSO_new_method(NULL));
-}
-
-void DSO_set_default_method(DSO_METHOD *meth)
-{
- default_DSO_meth = meth;
-}
-
-DSO_METHOD *DSO_get_default_method(void)
-{
- return (default_DSO_meth);
-}
-
-DSO_METHOD *DSO_get_method(DSO *dso)
-{
- return (dso->meth);
-}
-
-DSO_METHOD *DSO_set_method(DSO *dso, DSO_METHOD *meth)
-{
- DSO_METHOD *mtmp;
- mtmp = dso->meth;
- dso->meth = meth;
- return (mtmp);
-}
-
-DSO *DSO_new_method(DSO_METHOD *meth)
+static DSO *DSO_new_method(DSO_METHOD *meth)
{
DSO *ret;
- if (default_DSO_meth == NULL)
+ if (default_DSO_meth == NULL) {
/*
* We default to DSO_METH_openssl() which in turn defaults to
* stealing the "best available" method. Will fallback to
* DSO_METH_null() in the worst case.
*/
default_DSO_meth = DSO_METHOD_openssl();
- ret = (DSO *)OPENSSL_malloc(sizeof(DSO));
+ }
+ ret = OPENSSL_zalloc(sizeof(*ret));
if (ret == NULL) {
DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
return (NULL);
}
- memset(ret, 0, sizeof(DSO));
ret->meth_data = sk_void_new_null();
if (ret->meth_data == NULL) {
/* sk_new doesn't generate any errors so we do */
OPENSSL_free(ret);
return (NULL);
}
- if (meth == NULL)
- ret->meth = default_DSO_meth;
- else
- ret->meth = meth;
+ ret->meth = default_DSO_meth;
ret->references = 1;
- if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
+ ret->lock = CRYPTO_THREAD_lock_new();
+ if (ret->lock == NULL) {
+ DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+ sk_void_free(ret->meth_data);
OPENSSL_free(ret);
+ return NULL;
+ }
+
+ if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
+ DSO_free(ret);
ret = NULL;
}
- return (ret);
+
+ return ret;
+}
+
+DSO *DSO_new(void)
+{
+ return DSO_new_method(NULL);
}
int DSO_free(DSO *dso)
{
int i;
- if (dso == NULL) {
- DSOerr(DSO_F_DSO_FREE, ERR_R_PASSED_NULL_PARAMETER);
- return (0);
- }
+ if (dso == NULL)
+ return (1);
- i = CRYPTO_add(&dso->references, -1, CRYPTO_LOCK_DSO);
-#ifdef REF_PRINT
- REF_PRINT("DSO", dso);
-#endif
+ if (CRYPTO_atomic_add(&dso->references, -1, &i, dso->lock) <= 0)
+ return 0;
+
+ REF_PRINT_COUNT("DSO", dso);
if (i > 0)
- return (1);
-#ifdef REF_CHECK
- if (i < 0) {
- fprintf(stderr, "DSO_free, bad reference count\n");
- abort();
- }
-#endif
+ return 1;
+ REF_ASSERT_ISNT(i < 0);
if ((dso->meth->dso_unload != NULL) && !dso->meth->dso_unload(dso)) {
DSOerr(DSO_F_DSO_FREE, DSO_R_UNLOAD_FAILED);
- return (0);
+ return 0;
}
if ((dso->meth->finish != NULL) && !dso->meth->finish(dso)) {
DSOerr(DSO_F_DSO_FREE, DSO_R_FINISH_FAILED);
- return (0);
+ return 0;
}
sk_void_free(dso->meth_data);
- if (dso->filename != NULL)
- OPENSSL_free(dso->filename);
- if (dso->loaded_filename != NULL)
- OPENSSL_free(dso->loaded_filename);
-
+ OPENSSL_free(dso->filename);
+ OPENSSL_free(dso->loaded_filename);
+ CRYPTO_THREAD_lock_free(dso->lock);
OPENSSL_free(dso);
- return (1);
+ return 1;
}
int DSO_flags(DSO *dso)
int DSO_up_ref(DSO *dso)
{
+ int i;
+
if (dso == NULL) {
DSOerr(DSO_F_DSO_UP_REF, ERR_R_PASSED_NULL_PARAMETER);
- return (0);
+ return 0;
}
- CRYPTO_add(&dso->references, 1, CRYPTO_LOCK_DSO);
- return (1);
+ if (CRYPTO_atomic_add(&dso->references, 1, &i, dso->lock) <= 0)
+ return 0;
+
+ REF_PRINT_COUNT("DSO", r);
+ REF_ASSERT_ISNT(i < 2);
+ return ((i > 1) ? 1 : 0);
}
DSO *DSO_load(DSO *dso, const char *filename, DSO_METHOD *meth, int flags)
return (NULL);
}
-void *DSO_bind_var(DSO *dso, const char *symname)
-{
- void *ret = NULL;
-
- if ((dso == NULL) || (symname == NULL)) {
- DSOerr(DSO_F_DSO_BIND_VAR, ERR_R_PASSED_NULL_PARAMETER);
- return (NULL);
- }
- if (dso->meth->dso_bind_var == NULL) {
- DSOerr(DSO_F_DSO_BIND_VAR, DSO_R_UNSUPPORTED);
- return (NULL);
- }
- if ((ret = dso->meth->dso_bind_var(dso, symname)) == NULL) {
- DSOerr(DSO_F_DSO_BIND_VAR, DSO_R_SYM_FAILURE);
- return (NULL);
- }
- /* Success */
- return (ret);
-}
-
DSO_FUNC_TYPE DSO_bind_func(DSO *dso, const char *symname)
{
DSO_FUNC_TYPE ret = NULL;
* honest. For one thing, I think I have to return a negative value for any
* error because possible DSO_ctrl() commands may return values such as
* "size"s that can legitimately be zero (making the standard
- * "if(DSO_cmd(...))" form that works almost everywhere else fail at odd
+ * "if (DSO_cmd(...))" form that works almost everywhere else fail at odd
* times. I'd prefer "output" values to be passed by reference and the return
* value as success/failure like usual ... but we conform when we must... :-)
*/
return (dso->meth->dso_ctrl(dso, cmd, larg, parg));
}
-int DSO_set_name_converter(DSO *dso, DSO_NAME_CONVERTER_FUNC cb,
- DSO_NAME_CONVERTER_FUNC *oldcb)
-{
- if (dso == NULL) {
- DSOerr(DSO_F_DSO_SET_NAME_CONVERTER, ERR_R_PASSED_NULL_PARAMETER);
- return (0);
- }
- if (oldcb)
- *oldcb = dso->name_converter;
- dso->name_converter = cb;
- return (1);
-}
-
const char *DSO_get_filename(DSO *dso)
{
if (dso == NULL) {
return (0);
}
/* We'll duplicate filename */
- copied = OPENSSL_malloc(strlen(filename) + 1);
+ copied = OPENSSL_strdup(filename);
if (copied == NULL) {
DSOerr(DSO_F_DSO_SET_FILENAME, ERR_R_MALLOC_FAILURE);
return (0);
}
- BUF_strlcpy(copied, filename, strlen(filename) + 1);
- if (dso->filename)
- OPENSSL_free(dso->filename);
+ OPENSSL_free(dso->filename);
dso->filename = copied;
return (1);
}
result = dso->meth->dso_name_converter(dso, filename);
}
if (result == NULL) {
- result = OPENSSL_malloc(strlen(filename) + 1);
+ result = OPENSSL_strdup(filename);
if (result == NULL) {
DSOerr(DSO_F_DSO_CONVERT_FILENAME, ERR_R_MALLOC_FAILURE);
return (NULL);
}
- BUF_strlcpy(result, filename, strlen(filename) + 1);
}
return (result);
}
-const char *DSO_get_loaded_filename(DSO *dso)
-{
- if (dso == NULL) {
- DSOerr(DSO_F_DSO_GET_LOADED_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
- return (NULL);
- }
- return (dso->loaded_filename);
-}
-
-int DSO_pathbyaddr(void *addr, char *path, int sz)
-{
- DSO_METHOD *meth = default_DSO_meth;
- if (meth == NULL)
- meth = DSO_METHOD_openssl();
- if (meth->pathbyaddr == NULL) {
- DSOerr(DSO_F_DSO_PATHBYADDR, DSO_R_UNSUPPORTED);
- return -1;
- }
- return (*meth->pathbyaddr) (addr, path, sz);
-}
-
void *DSO_global_lookup(const char *name)
{
DSO_METHOD *meth = default_DSO_meth;
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