/* 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 #include "cryptlib.h" #include /* * Code for ENUMERATED type: identical to INTEGER apart from a different tag. * for comments on encoding see a_int.c */ ASN1_ENUMERATED *ASN1_ENUMERATED_new(void) { return M_ASN1_ENUMERATED_new(); } void ASN1_ENUMERATED_free(ASN1_ENUMERATED *x) { M_ASN1_ENUMERATED_free(x); } int i2d_ASN1_ENUMERATED(ASN1_ENUMERATED *a, unsigned char **pp) { int len, ret; len = i2c_ASN1_INTEGER(a, NULL); ret=ASN1_object_size(0,len,V_ASN1_ENUMERATED); if(pp) { ASN1_put_object(pp,0,ret,V_ASN1_ENUMERATED,V_ASN1_UNIVERSAL); i2c_ASN1_INTEGER(a, pp); } return ret; } ASN1_ENUMERATED *d2i_ASN1_ENUMERATED(ASN1_ENUMERATED **a, unsigned char **pp, long length) { unsigned char *p; long len; int i; int inf,tag,xclass; ASN1_ENUMERATED *ret; p= *pp; inf=ASN1_get_object(&p,&len,&tag,&xclass,length); if (inf & 0x80) { i=ASN1_R_BAD_OBJECT_HEADER; goto err; } if (tag != V_ASN1_ENUMERATED) { i=ASN1_R_EXPECTING_AN_ENUMERATED; goto err; } ret = c2i_ASN1_INTEGER(a, &p, len); if(ret) { ret->type = (V_ASN1_NEG & ret->type) | V_ASN1_ENUMERATED; *pp = p; } return ret; err: ASN1err(ASN1_F_D2I_ASN1_ENUMERATED,i); return(NULL); } int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v) { int i,j,k; unsigned char buf[sizeof(long)+1]; long d; a->type=V_ASN1_ENUMERATED; if (a->length < (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>=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(0); if (a->length > sizeof(long)) { /* hmm... a bit ugly */ return(0xffffffffL); } if (a->data == NULL) return(0); for (i=0; ilength; 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->neg) ret->type = V_ASN1_NEG_ENUMERATED; else ret->type=V_ASN1_ENUMERATED; j=BN_num_bits(bn); len=((j == 0)?0:((j/8)+1)); ret->data=(unsigned char *)OPENSSL_malloc(len+4); 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); if(ai->type == V_ASN1_NEG_ENUMERATED) bn->neg = 1; return(ret); }