--- /dev/null
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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 acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS 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 AUTHOR OR 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+/*
+ * Code for ENUMERATED type: identical to INTEGER apart from a different tag.
+ * for comments on encoding see a_int.c
+ */
+
+int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v)
+{
+ int j, k;
+ unsigned int i;
+ unsigned char buf[sizeof(long) + 1];
+ long d;
+
+ a->type = V_ASN1_ENUMERATED;
+ if (a->length < (int)(sizeof(long) + 1)) {
+ if (a->data != NULL)
+ OPENSSL_free(a->data);
+ if ((a->data =
+ (unsigned char *)OPENSSL_malloc(sizeof(long) + 1)) != NULL)
+ OPENSSL_memset((char *)a->data, 0, sizeof(long) + 1);
+ }
+ if (a->data == NULL) {
+ OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+ return (0);
+ }
+ d = v;
+ if (d < 0) {
+ d = -d;
+ a->type = V_ASN1_NEG_ENUMERATED;
+ }
+
+ for (i = 0; i < sizeof(long); i++) {
+ if (d == 0)
+ break;
+ buf[i] = (int)d & 0xff;
+ d >>= 8;
+ }
+ j = 0;
+ for (k = i - 1; k >= 0; k--)
+ a->data[j++] = buf[k];
+ a->length = j;
+ return (1);
+}
+
+long ASN1_ENUMERATED_get(ASN1_ENUMERATED *a)
+{
+ int neg = 0, i;
+
+ if (a == NULL)
+ return (0L);
+ i = a->type;
+ if (i == V_ASN1_NEG_ENUMERATED)
+ neg = 1;
+ else if (i != V_ASN1_ENUMERATED)
+ return -1;
+
+ OPENSSL_COMPILE_ASSERT(sizeof(uint64_t) >= sizeof(long),
+ long_larger_than_uint64_t);
+
+ if (a->length > (int)sizeof(uint64_t)) {
+ /* hmm... a bit ugly */
+ return -1;
+ }
+
+ uint64_t r64 = 0;
+ if (a->data != NULL) {
+ for (i = 0; i < a->length; i++) {
+ r64 <<= 8;
+ r64 |= (unsigned char)a->data[i];
+ }
+
+ if (r64 > LONG_MAX) {
+ return -1;
+ }
+ }
+
+ long r = (long) r64;
+ if (neg)
+ r = -r;
+
+ return r;
+}
+
+ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai)
+{
+ ASN1_ENUMERATED *ret;
+ int len, j;
+
+ if (ai == NULL)
+ ret = M_ASN1_ENUMERATED_new();
+ else
+ ret = ai;
+ if (ret == NULL) {
+ OPENSSL_PUT_ERROR(ASN1, ASN1_R_NESTED_ASN1_ERROR);
+ goto err;
+ }
+ if (BN_is_negative(bn))
+ ret->type = V_ASN1_NEG_ENUMERATED;
+ else
+ ret->type = V_ASN1_ENUMERATED;
+ j = BN_num_bits(bn);
+ len = ((j == 0) ? 0 : ((j / 8) + 1));
+ if (ret->length < len + 4) {
+ unsigned char *new_data = OPENSSL_realloc(ret->data, len + 4);
+ if (!new_data) {
+ OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ ret->data = new_data;
+ }
+
+ ret->length = BN_bn2bin(bn, ret->data);
+ return (ret);
+ err:
+ if (ret != ai)
+ M_ASN1_ENUMERATED_free(ret);
+ return (NULL);
+}
+
+BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn)
+{
+ BIGNUM *ret;
+
+ if ((ret = BN_bin2bn(ai->data, ai->length, bn)) == NULL)
+ OPENSSL_PUT_ERROR(ASN1, ASN1_R_BN_LIB);
+ else if (ai->type == V_ASN1_NEG_ENUMERATED)
+ BN_set_negative(ret, 1);
+ return (ret);
+}
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