| /* 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 <string.h> |
| |
| #include <openssl/err.h> |
| #include <openssl/mem.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) |
| { |
| OPENSSL_PUT_ERROR(ASN1, 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) |
| { |
| OPENSSL_PUT_ERROR(ASN1, BN_to_ASN1_ENUMERATED, 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, 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) |
| OPENSSL_PUT_ERROR(ASN1, ASN1_ENUMERATED_to_BN, ASN1_R_BN_LIB); |
| else if(ai->type == V_ASN1_NEG_ENUMERATED) BN_set_negative(ret,1); |
| return(ret); |
| } |