-/* tasn_utl.c */
/*
- * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
- * 2000.
- */
-/* ====================================================================
- * Copyright (c) 2000-2004 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 2000-2023 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the Apache License 2.0 (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 <stddef.h>
#include <string.h>
+#include "internal/cryptlib.h"
+#include "internal/refcount.h"
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/objects.h>
#include <openssl/err.h>
-#include "asn1_locl.h"
+#include "asn1_local.h"
/* Utility functions for manipulating fields and offsets */
* Given an ASN1_ITEM CHOICE type return the selector value
*/
-int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it)
+int ossl_asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
int *sel = offset2ptr(*pval, it->utype);
+
+ return *sel;
+}
+
+int ossl_asn1_get_choice_selector_const(const ASN1_VALUE **pval,
+ const ASN1_ITEM *it)
+{
+ int *sel = offset2ptr(*pval, it->utype);
+
return *sel;
}
* Given an ASN1_ITEM CHOICE type set the selector value, return old value.
*/
-int asn1_set_choice_selector(ASN1_VALUE **pval, int value,
- const ASN1_ITEM *it)
+int ossl_asn1_set_choice_selector(ASN1_VALUE **pval, int value,
+ const ASN1_ITEM *it)
{
int *sel, ret;
+
sel = offset2ptr(*pval, it->utype);
ret = *sel;
*sel = value;
}
/*
- * Do reference counting. The value 'op' decides what to do. if it is +1
- * then the count is incremented. If op is 0 count is set to 1. If op is -1
- * count is decremented and the return value is the current reference count
- * or 0 if no reference count exists.
+ * Do atomic reference counting. The value 'op' decides what to do.
+ * If it is +1 then the count is incremented.
+ * If |op| is 0, count is initialised and set to 1.
+ * If |op| is -1, count is decremented and the return value is the current
+ * reference count or 0 if no reference count is active.
+ * It returns -1 on initialisation error.
+ * Used by ASN1_SEQUENCE construct of X509, X509_REQ, X509_CRL objects
*/
-
-int asn1_do_lock(ASN1_VALUE **pval, int op, const ASN1_ITEM *it)
+int ossl_asn1_do_lock(ASN1_VALUE **pval, int op, const ASN1_ITEM *it)
{
const ASN1_AUX *aux;
- int *lck, ret;
+ CRYPTO_RWLOCK **lock;
+ CRYPTO_REF_COUNT *refcnt;
+ int ret = -1;
+
if ((it->itype != ASN1_ITYPE_SEQUENCE)
&& (it->itype != ASN1_ITYPE_NDEF_SEQUENCE))
return 0;
aux = it->funcs;
- if (!aux || !(aux->flags & ASN1_AFLG_REFCOUNT))
+ if (aux == NULL || (aux->flags & ASN1_AFLG_REFCOUNT) == 0)
return 0;
- lck = offset2ptr(*pval, aux->ref_offset);
- if (op == 0) {
- *lck = 1;
- return 1;
+ lock = offset2ptr(*pval, aux->ref_lock);
+ refcnt = offset2ptr(*pval, aux->ref_offset);
+
+ switch (op) {
+ case 0:
+ if (!CRYPTO_NEW_REF(refcnt, 1))
+ return -1;
+ *lock = CRYPTO_THREAD_lock_new();
+ if (*lock == NULL) {
+ CRYPTO_FREE_REF(refcnt);
+ ERR_raise(ERR_LIB_ASN1, ERR_R_CRYPTO_LIB);
+ return -1;
+ }
+ ret = 1;
+ break;
+ case 1:
+ if (!CRYPTO_UP_REF(refcnt, &ret))
+ return -1;
+ break;
+ case -1:
+ if (!CRYPTO_DOWN_REF(refcnt, &ret))
+ return -1; /* failed */
+ REF_PRINT_EX(it->sname, ret, (void *)it);
+ REF_ASSERT_ISNT(ret < 0);
+ if (ret == 0) {
+ CRYPTO_THREAD_lock_free(*lock);
+ *lock = NULL;
+ CRYPTO_FREE_REF(refcnt);
+ }
+ break;
}
- ret = CRYPTO_add(lck, op, aux->ref_lock);
-#ifdef REF_PRINT
- fprintf(stderr, "%s: Reference Count: %d\n", it->sname, *lck);
-#endif
-#ifdef REF_CHECK
- if (ret < 0)
- fprintf(stderr, "%s, bad reference count\n", it->sname);
-#endif
+
return ret;
}
static ASN1_ENCODING *asn1_get_enc_ptr(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
const ASN1_AUX *aux;
- if (!pval || !*pval)
+
+ if (pval == NULL || *pval == NULL)
+ return NULL;
+ aux = it->funcs;
+ if (aux == NULL || (aux->flags & ASN1_AFLG_ENCODING) == 0)
+ return NULL;
+ return offset2ptr(*pval, aux->enc_offset);
+}
+
+static const ASN1_ENCODING *asn1_get_const_enc_ptr(const ASN1_VALUE **pval,
+ const ASN1_ITEM *it)
+{
+ const ASN1_AUX *aux;
+
+ if (pval == NULL || *pval == NULL)
return NULL;
aux = it->funcs;
- if (!aux || !(aux->flags & ASN1_AFLG_ENCODING))
+ if (aux == NULL || (aux->flags & ASN1_AFLG_ENCODING) == 0)
return NULL;
return offset2ptr(*pval, aux->enc_offset);
}
-void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it)
+void ossl_asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- ASN1_ENCODING *enc;
- enc = asn1_get_enc_ptr(pval, it);
- if (enc) {
+ ASN1_ENCODING *enc = asn1_get_enc_ptr(pval, it);
+
+ if (enc != NULL) {
enc->enc = NULL;
enc->len = 0;
enc->modified = 1;
}
}
-void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+void ossl_asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- ASN1_ENCODING *enc;
- enc = asn1_get_enc_ptr(pval, it);
- if (enc) {
+ ASN1_ENCODING *enc = asn1_get_enc_ptr(pval, it);
+
+ if (enc != NULL) {
OPENSSL_free(enc->enc);
enc->enc = NULL;
enc->len = 0;
}
}
-int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen,
- const ASN1_ITEM *it)
+int ossl_asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen,
+ const ASN1_ITEM *it)
{
- ASN1_ENCODING *enc;
- enc = asn1_get_enc_ptr(pval, it);
- if (!enc)
+ ASN1_ENCODING *enc = asn1_get_enc_ptr(pval, it);
+
+ if (enc == NULL)
return 1;
OPENSSL_free(enc->enc);
- enc->enc = OPENSSL_malloc(inlen);
- if (!enc->enc)
+ if (inlen <= 0)
+ return 0;
+ if ((enc->enc = OPENSSL_malloc(inlen)) == NULL)
return 0;
memcpy(enc->enc, in, inlen);
enc->len = inlen;
return 1;
}
-int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval,
- const ASN1_ITEM *it)
+int ossl_asn1_enc_restore(int *len, unsigned char **out, const ASN1_VALUE **pval,
+ const ASN1_ITEM *it)
{
- ASN1_ENCODING *enc;
- enc = asn1_get_enc_ptr(pval, it);
- if (!enc || enc->modified)
+ const ASN1_ENCODING *enc = asn1_get_const_enc_ptr(pval, it);
+
+ if (enc == NULL || enc->modified)
return 0;
if (out) {
memcpy(*out, enc->enc, enc->len);
*out += enc->len;
}
- if (len)
+ if (len != NULL)
*len = enc->len;
return 1;
}
/* Given an ASN1_TEMPLATE get a pointer to a field */
-ASN1_VALUE **asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
+ASN1_VALUE **ossl_asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
{
- ASN1_VALUE **pvaltmp;
- pvaltmp = offset2ptr(*pval, tt->offset);
+ ASN1_VALUE **pvaltmp = offset2ptr(*pval, tt->offset);
+
/*
* NOTE for BOOLEAN types the field is just a plain int so we can't
* return int **, so settle for (int *).
return pvaltmp;
}
+/* Given an ASN1_TEMPLATE get a const pointer to a field */
+const ASN1_VALUE **ossl_asn1_get_const_field_ptr(const ASN1_VALUE **pval,
+ const ASN1_TEMPLATE *tt)
+{
+ return offset2ptr(*pval, tt->offset);
+}
+
/*
* Handle ANY DEFINED BY template, find the selector, look up the relevant
* ASN1_TEMPLATE in the table and return it.
*/
-const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt,
- int nullerr)
+const ASN1_TEMPLATE *ossl_asn1_do_adb(const ASN1_VALUE *val,
+ const ASN1_TEMPLATE *tt,
+ int nullerr)
{
const ASN1_ADB *adb;
const ASN1_ADB_TABLE *atbl;
long selector;
- ASN1_VALUE **sfld;
+ const ASN1_VALUE **sfld;
int i;
- if (!(tt->flags & ASN1_TFLG_ADB_MASK))
+
+ if ((tt->flags & ASN1_TFLG_ADB_MASK) == 0)
return tt;
/* Else ANY DEFINED BY ... get the table */
adb = ASN1_ADB_ptr(tt->item);
/* Get the selector field */
- sfld = offset2ptr(*pval, adb->offset);
+ sfld = offset2ptr(val, adb->offset);
/* Check if NULL */
- if (!sfld) {
- if (!adb->null_tt)
+ if (*sfld == NULL) {
+ if (adb->null_tt == NULL)
goto err;
return adb->null_tt;
}
* Convert type to a long: NB: don't check for NID_undef here because it
* might be a legitimate value in the table
*/
- if (tt->flags & ASN1_TFLG_ADB_OID)
+ if ((tt->flags & ASN1_TFLG_ADB_OID) != 0)
selector = OBJ_obj2nid((ASN1_OBJECT *)*sfld);
else
selector = ASN1_INTEGER_get((ASN1_INTEGER *)*sfld);
+ /* Let application callback translate value */
+ if (adb->adb_cb != NULL && adb->adb_cb(&selector) == 0) {
+ ERR_raise(ERR_LIB_ASN1, ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE);
+ return NULL;
+ }
+
/*
* Try to find matching entry in table Maybe should check application
* types first to allow application override? Might also be useful to
err:
/* FIXME: should log the value or OID of unsupported type */
if (nullerr)
- ASN1err(ASN1_F_ASN1_DO_ADB, ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE);
+ ERR_raise(ERR_LIB_ASN1, ASN1_R_UNSUPPORTED_ANY_DEFINED_BY_TYPE);
return NULL;
}
projects / openssl.git / blobdiff