diff options
Diffstat (limited to 'thirdparty/openssl/crypto/asn1/a_enum.c')
| -rw-r--r-- | thirdparty/openssl/crypto/asn1/a_enum.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/asn1/a_enum.c b/thirdparty/openssl/crypto/asn1/a_enum.c new file mode 100644 index 0000000000..c3498ac99c --- /dev/null +++ b/thirdparty/openssl/crypto/asn1/a_enum.c @@ -0,0 +1,181 @@ +/* crypto/asn1/a_enum.c */ +/* 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 <stdio.h> +#include "cryptlib.h" +#include <openssl/asn1.h> +#include <openssl/bn.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) + memset((char *)a->data, 0, sizeof(long) + 1); + } + if (a->data == NULL) { + ASN1err(ASN1_F_ASN1_ENUMERATED_SET, 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; + long r = 0; + + if (a == NULL) + return (0L); + i = a->type; + if (i == V_ASN1_NEG_ENUMERATED) + neg = 1; + else if (i != V_ASN1_ENUMERATED) + return -1; + + if (a->length > (int)sizeof(long)) { + /* hmm... a bit ugly */ + return (0xffffffffL); + } + if (a->data == NULL) + return 0; + + for (i = 0; i < a->length; i++) { + r <<= 8; + r |= (unsigned char)a->data[i]; + } + 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) { + ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED, ERR_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) { + ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED, 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) + ASN1err(ASN1_F_ASN1_ENUMERATED_TO_BN, ASN1_R_BN_LIB); + else if (ai->type == V_ASN1_NEG_ENUMERATED) + BN_set_negative(ret, 1); + return (ret); +} |