-/* tasn_utl.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 2000-2017 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 <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"
/* Utility functions for manipulating fields and offsets */
/* Add 'offset' to 'addr' */
#define offset2ptr(addr, offset) (void *)(((char *) addr) + offset)
-/* Given an ASN1_ITEM CHOICE type return
- * the selector value
+/*
+ * Given an ASN1_ITEM CHOICE type return the selector value
*/
int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- int *sel = offset2ptr(*pval, it->utype);
- return *sel;
+ int *sel = offset2ptr(*pval, it->utype);
+ return *sel;
}
-/* Given an ASN1_ITEM CHOICE type set
- * the selector value, return old value.
+/*
+ * 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 *sel, ret;
- sel = offset2ptr(*pval, it->utype);
- ret = *sel;
- *sel = value;
- return ret;
+int 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;
+ return ret;
}
-/* 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 refrence 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, lock is initialised and 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 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)
{
- const ASN1_AUX *aux;
- int *lck, ret;
- if(it->itype != ASN1_ITYPE_SEQUENCE) return 0;
- aux = it->funcs;
- if(!aux || !(aux->flags & ASN1_AFLG_REFCOUNT)) return 0;
- lck = offset2ptr(*pval, aux->ref_offset);
- if(op == 0) {
- *lck = 1;
- return 1;
- }
- ret = CRYPTO_add(lck, op, aux->ref_lock);
+ const ASN1_AUX *aux;
+ int *lck, ret;
+ CRYPTO_RWLOCK **lock;
+ if ((it->itype != ASN1_ITYPE_SEQUENCE)
+ && (it->itype != ASN1_ITYPE_NDEF_SEQUENCE))
+ return 0;
+ aux = it->funcs;
+ if (!aux || !(aux->flags & ASN1_AFLG_REFCOUNT))
+ return 0;
+ lck = offset2ptr(*pval, aux->ref_offset);
+ lock = offset2ptr(*pval, aux->ref_lock);
+ if (op == 0) {
+ *lck = 1;
+ *lock = CRYPTO_THREAD_lock_new();
+ if (*lock == NULL) {
+ ASN1err(ASN1_F_ASN1_DO_LOCK, ERR_R_MALLOC_FAILURE);
+ return -1;
+ }
+ return 1;
+ }
+ if (CRYPTO_atomic_add(lck, op, &ret, *lock) < 0)
+ return -1; /* failed */
#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);
+ fprintf(stderr, "%p:%4d:%s\n", it, *lck, it->sname);
#endif
- return ret;
+ REF_ASSERT_ISNT(ret < 0);
+ if (ret == 0) {
+ CRYPTO_THREAD_lock_free(*lock);
+ *lock = NULL;
+ }
+ return ret;
}
static ASN1_ENCODING *asn1_get_enc_ptr(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- const ASN1_AUX *aux;
- if(!pval || !*pval) return NULL;
- aux = it->funcs;
- if(!aux || !(aux->flags & ASN1_AFLG_ENCODING)) return NULL;
- return offset2ptr(*pval, aux->enc_offset);
+ const ASN1_AUX *aux;
+ if (!pval || !*pval)
+ return NULL;
+ aux = it->funcs;
+ if (!aux || !(aux->flags & ASN1_AFLG_ENCODING))
+ return NULL;
+ return offset2ptr(*pval, aux->enc_offset);
}
void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- ASN1_ENCODING *enc;
- enc = asn1_get_enc_ptr(pval, it);
- if(enc) {
- enc->enc = NULL;
- enc->len = 0;
- enc->modified = 1;
- }
+ ASN1_ENCODING *enc;
+ enc = asn1_get_enc_ptr(pval, it);
+ if (enc) {
+ enc->enc = NULL;
+ enc->len = 0;
+ enc->modified = 1;
+ }
}
void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- ASN1_ENCODING *enc;
- enc = asn1_get_enc_ptr(pval, it);
- if(enc) {
- if(enc->enc) OPENSSL_free(enc->enc);
- enc->enc = NULL;
- enc->len = 0;
- enc->modified = 1;
- }
+ ASN1_ENCODING *enc;
+ enc = asn1_get_enc_ptr(pval, it);
+ if (enc) {
+ OPENSSL_free(enc->enc);
+ enc->enc = NULL;
+ enc->len = 0;
+ enc->modified = 1;
+ }
}
-int asn1_enc_save(ASN1_VALUE **pval, unsigned char *in, int inlen, const ASN1_ITEM *it)
+int 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) return 1;
-
- if(enc->enc) OPENSSL_free(enc->enc);
- enc->enc = OPENSSL_malloc(inlen);
- if(!enc->enc) return 0;
- memcpy(enc->enc, in, inlen);
- enc->len = inlen;
- enc->modified = 0;
-
- return 1;
+ ASN1_ENCODING *enc;
+ enc = asn1_get_enc_ptr(pval, it);
+ if (!enc)
+ return 1;
+
+ OPENSSL_free(enc->enc);
+ enc->enc = OPENSSL_malloc(inlen);
+ if (enc->enc == NULL)
+ return 0;
+ memcpy(enc->enc, in, inlen);
+ enc->len = inlen;
+ enc->modified = 0;
+
+ return 1;
}
-
-int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval, const ASN1_ITEM *it)
+
+int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval,
+ const ASN1_ITEM *it)
{
- ASN1_ENCODING *enc;
- enc = asn1_get_enc_ptr(pval, it);
- if(!enc || enc->modified) return 0;
- if(out) {
- memcpy(*out, enc->enc, enc->len);
- *out += enc->len;
- }
- if(len) *len = enc->len;
- return 1;
+ ASN1_ENCODING *enc;
+ enc = asn1_get_enc_ptr(pval, it);
+ if (!enc || enc->modified)
+ return 0;
+ if (out) {
+ memcpy(*out, enc->enc, enc->len);
+ *out += enc->len;
+ }
+ if (len)
+ *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 **asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
{
- ASN1_VALUE **pvaltmp;
- if(tt->flags & ASN1_TFLG_COMBINE) return pval;
- 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;
+ ASN1_VALUE **pvaltmp;
+ 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;
}
-/* Handle ANY DEFINED BY template, find the selector, look up
- * the relevant ASN1_TEMPLATE in the table and return it.
+/*
+ * 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 *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt,
+ int nullerr)
{
- const ASN1_ADB *adb;
- const ASN1_ADB_TABLE *atbl;
- long selector;
- ASN1_VALUE **sfld;
- int i;
- if(!(tt->flags & ASN1_TFLG_ADB_MASK)) return tt;
-
- /* Else ANY DEFINED BY ... get the table */
- adb = tt->item;
-
- /* Get the selector field */
- sfld = offset2ptr(*pval, adb->offset);
-
- /* Check if NULL */
- if(!sfld) {
- if(!adb->null_tt) 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)
- selector = OBJ_obj2nid((ASN1_OBJECT *)*sfld);
- else
- selector = ASN1_INTEGER_get((ASN1_INTEGER *)*sfld);
-
- /* Try to find matching entry in table
- * Maybe should check application types first to
- * allow application override? Might also be useful
- * to have a flag which indicates table is sorted and
- * we can do a binary search. For now stick to a
- * linear search.
- */
-
- for(atbl = adb->tbl, i = 0; i < adb->tblcount; i++, atbl++)
- if(atbl->value == selector) return &atbl->tt;
-
- /* FIXME: need to search application table too */
-
- /* No match, return default type */
- if(!adb->default_tt) goto err;
- return adb->default_tt;
-
- 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);
- return NULL;
+ const ASN1_ADB *adb;
+ const ASN1_ADB_TABLE *atbl;
+ long selector;
+ ASN1_VALUE **sfld;
+ int i;
+ if (!(tt->flags & ASN1_TFLG_ADB_MASK))
+ return tt;
+
+ /* Else ANY DEFINED BY ... get the table */
+ adb = ASN1_ADB_ptr(tt->item);
+
+ /* Get the selector field */
+ sfld = offset2ptr(*pval, adb->offset);
+
+ /* Check if NULL */
+ if (*sfld == NULL) {
+ if (!adb->null_tt)
+ 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)
+ 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) {
+ ASN1err(ASN1_F_ASN1_DO_ADB, 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
+ * have a flag which indicates table is sorted and we can do a binary
+ * search. For now stick to a linear search.
+ */
+
+ for (atbl = adb->tbl, i = 0; i < adb->tblcount; i++, atbl++)
+ if (atbl->value == selector)
+ return &atbl->tt;
+
+ /* FIXME: need to search application table too */
+
+ /* No match, return default type */
+ if (!adb->default_tt)
+ goto err;
+ return adb->default_tt;
+
+ 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);
+ return NULL;
}
projects / openssl.git / blobdiff