1*0Sstevel@tonic-gate /* crypto/asn1/a_enum.c */ 2*0Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate * 5*0Sstevel@tonic-gate * This package is an SSL implementation written 6*0Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com). 7*0Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as 10*0Sstevel@tonic-gate * the following conditions are aheared to. The following conditions 11*0Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA, 12*0Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13*0Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms 14*0Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15*0Sstevel@tonic-gate * 16*0Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in 17*0Sstevel@tonic-gate * the code are not to be removed. 18*0Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution 19*0Sstevel@tonic-gate * as the author of the parts of the library used. 20*0Sstevel@tonic-gate * This can be in the form of a textual message at program startup or 21*0Sstevel@tonic-gate * in documentation (online or textual) provided with the package. 22*0Sstevel@tonic-gate * 23*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 24*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 25*0Sstevel@tonic-gate * are met: 26*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright 27*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 28*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 29*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 30*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 31*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software 32*0Sstevel@tonic-gate * must display the following acknowledgement: 33*0Sstevel@tonic-gate * "This product includes cryptographic software written by 34*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)" 35*0Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library 36*0Sstevel@tonic-gate * being used are not cryptographic related :-). 37*0Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from 38*0Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement: 39*0Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40*0Sstevel@tonic-gate * 41*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51*0Sstevel@tonic-gate * SUCH DAMAGE. 52*0Sstevel@tonic-gate * 53*0Sstevel@tonic-gate * The licence and distribution terms for any publically available version or 54*0Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be 55*0Sstevel@tonic-gate * copied and put under another distribution licence 56*0Sstevel@tonic-gate * [including the GNU Public Licence.] 57*0Sstevel@tonic-gate */ 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #include <stdio.h> 60*0Sstevel@tonic-gate #include "cryptlib.h" 61*0Sstevel@tonic-gate #include <openssl/asn1.h> 62*0Sstevel@tonic-gate 63*0Sstevel@tonic-gate /* 64*0Sstevel@tonic-gate * Code for ENUMERATED type: identical to INTEGER apart from a different tag. 65*0Sstevel@tonic-gate * for comments on encoding see a_int.c 66*0Sstevel@tonic-gate */ 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v) 69*0Sstevel@tonic-gate { 70*0Sstevel@tonic-gate int i,j,k; 71*0Sstevel@tonic-gate unsigned char buf[sizeof(long)+1]; 72*0Sstevel@tonic-gate long d; 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate a->type=V_ASN1_ENUMERATED; 75*0Sstevel@tonic-gate if (a->length < (sizeof(long)+1)) 76*0Sstevel@tonic-gate { 77*0Sstevel@tonic-gate if (a->data != NULL) 78*0Sstevel@tonic-gate OPENSSL_free(a->data); 79*0Sstevel@tonic-gate if ((a->data=(unsigned char *)OPENSSL_malloc(sizeof(long)+1)) != NULL) 80*0Sstevel@tonic-gate memset((char *)a->data,0,sizeof(long)+1); 81*0Sstevel@tonic-gate } 82*0Sstevel@tonic-gate if (a->data == NULL) 83*0Sstevel@tonic-gate { 84*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_ENUMERATED_SET,ERR_R_MALLOC_FAILURE); 85*0Sstevel@tonic-gate return(0); 86*0Sstevel@tonic-gate } 87*0Sstevel@tonic-gate d=v; 88*0Sstevel@tonic-gate if (d < 0) 89*0Sstevel@tonic-gate { 90*0Sstevel@tonic-gate d= -d; 91*0Sstevel@tonic-gate a->type=V_ASN1_NEG_ENUMERATED; 92*0Sstevel@tonic-gate } 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate for (i=0; i<sizeof(long); i++) 95*0Sstevel@tonic-gate { 96*0Sstevel@tonic-gate if (d == 0) break; 97*0Sstevel@tonic-gate buf[i]=(int)d&0xff; 98*0Sstevel@tonic-gate d>>=8; 99*0Sstevel@tonic-gate } 100*0Sstevel@tonic-gate j=0; 101*0Sstevel@tonic-gate for (k=i-1; k >=0; k--) 102*0Sstevel@tonic-gate a->data[j++]=buf[k]; 103*0Sstevel@tonic-gate a->length=j; 104*0Sstevel@tonic-gate return(1); 105*0Sstevel@tonic-gate } 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate long ASN1_ENUMERATED_get(ASN1_ENUMERATED *a) 108*0Sstevel@tonic-gate { 109*0Sstevel@tonic-gate int neg=0,i; 110*0Sstevel@tonic-gate long r=0; 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate if (a == NULL) return(0L); 113*0Sstevel@tonic-gate i=a->type; 114*0Sstevel@tonic-gate if (i == V_ASN1_NEG_ENUMERATED) 115*0Sstevel@tonic-gate neg=1; 116*0Sstevel@tonic-gate else if (i != V_ASN1_ENUMERATED) 117*0Sstevel@tonic-gate return -1; 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate if (a->length > sizeof(long)) 120*0Sstevel@tonic-gate { 121*0Sstevel@tonic-gate /* hmm... a bit ugly */ 122*0Sstevel@tonic-gate return(0xffffffffL); 123*0Sstevel@tonic-gate } 124*0Sstevel@tonic-gate if (a->data == NULL) 125*0Sstevel@tonic-gate return 0; 126*0Sstevel@tonic-gate 127*0Sstevel@tonic-gate for (i=0; i<a->length; i++) 128*0Sstevel@tonic-gate { 129*0Sstevel@tonic-gate r<<=8; 130*0Sstevel@tonic-gate r|=(unsigned char)a->data[i]; 131*0Sstevel@tonic-gate } 132*0Sstevel@tonic-gate if (neg) r= -r; 133*0Sstevel@tonic-gate return(r); 134*0Sstevel@tonic-gate } 135*0Sstevel@tonic-gate 136*0Sstevel@tonic-gate ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai) 137*0Sstevel@tonic-gate { 138*0Sstevel@tonic-gate ASN1_ENUMERATED *ret; 139*0Sstevel@tonic-gate int len,j; 140*0Sstevel@tonic-gate 141*0Sstevel@tonic-gate if (ai == NULL) 142*0Sstevel@tonic-gate ret=M_ASN1_ENUMERATED_new(); 143*0Sstevel@tonic-gate else 144*0Sstevel@tonic-gate ret=ai; 145*0Sstevel@tonic-gate if (ret == NULL) 146*0Sstevel@tonic-gate { 147*0Sstevel@tonic-gate ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED,ERR_R_NESTED_ASN1_ERROR); 148*0Sstevel@tonic-gate goto err; 149*0Sstevel@tonic-gate } 150*0Sstevel@tonic-gate if(bn->neg) ret->type = V_ASN1_NEG_ENUMERATED; 151*0Sstevel@tonic-gate else ret->type=V_ASN1_ENUMERATED; 152*0Sstevel@tonic-gate j=BN_num_bits(bn); 153*0Sstevel@tonic-gate len=((j == 0)?0:((j/8)+1)); 154*0Sstevel@tonic-gate if (ret->length < len+4) 155*0Sstevel@tonic-gate { 156*0Sstevel@tonic-gate unsigned char *new_data=OPENSSL_realloc(ret->data, len+4); 157*0Sstevel@tonic-gate if (!new_data) 158*0Sstevel@tonic-gate { 159*0Sstevel@tonic-gate ASN1err(ASN1_F_BN_TO_ASN1_INTEGER,ERR_R_MALLOC_FAILURE); 160*0Sstevel@tonic-gate goto err; 161*0Sstevel@tonic-gate } 162*0Sstevel@tonic-gate ret->data=new_data; 163*0Sstevel@tonic-gate } 164*0Sstevel@tonic-gate 165*0Sstevel@tonic-gate ret->length=BN_bn2bin(bn,ret->data); 166*0Sstevel@tonic-gate return(ret); 167*0Sstevel@tonic-gate err: 168*0Sstevel@tonic-gate if (ret != ai) M_ASN1_ENUMERATED_free(ret); 169*0Sstevel@tonic-gate return(NULL); 170*0Sstevel@tonic-gate } 171*0Sstevel@tonic-gate 172*0Sstevel@tonic-gate BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn) 173*0Sstevel@tonic-gate { 174*0Sstevel@tonic-gate BIGNUM *ret; 175*0Sstevel@tonic-gate 176*0Sstevel@tonic-gate if ((ret=BN_bin2bn(ai->data,ai->length,bn)) == NULL) 177*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_ENUMERATED_TO_BN,ASN1_R_BN_LIB); 178*0Sstevel@tonic-gate else if(ai->type == V_ASN1_NEG_ENUMERATED) ret->neg = 1; 179*0Sstevel@tonic-gate return(ret); 180*0Sstevel@tonic-gate } 181