1*0Sstevel@tonic-gate /* asn_pack.c */ 2*0Sstevel@tonic-gate /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL 3*0Sstevel@tonic-gate * project 1999. 4*0Sstevel@tonic-gate */ 5*0Sstevel@tonic-gate /* ==================================================================== 6*0Sstevel@tonic-gate * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 7*0Sstevel@tonic-gate * 8*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 9*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 10*0Sstevel@tonic-gate * are met: 11*0Sstevel@tonic-gate * 12*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright 13*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 14*0Sstevel@tonic-gate * 15*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 16*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in 17*0Sstevel@tonic-gate * the documentation and/or other materials provided with the 18*0Sstevel@tonic-gate * distribution. 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this 21*0Sstevel@tonic-gate * software must display the following acknowledgment: 22*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project 23*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24*0Sstevel@tonic-gate * 25*0Sstevel@tonic-gate * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26*0Sstevel@tonic-gate * endorse or promote products derived from this software without 27*0Sstevel@tonic-gate * prior written permission. For written permission, please contact 28*0Sstevel@tonic-gate * licensing@OpenSSL.org. 29*0Sstevel@tonic-gate * 30*0Sstevel@tonic-gate * 5. Products derived from this software may not be called "OpenSSL" 31*0Sstevel@tonic-gate * nor may "OpenSSL" appear in their names without prior written 32*0Sstevel@tonic-gate * permission of the OpenSSL Project. 33*0Sstevel@tonic-gate * 34*0Sstevel@tonic-gate * 6. Redistributions of any form whatsoever must retain the following 35*0Sstevel@tonic-gate * acknowledgment: 36*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project 37*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38*0Sstevel@tonic-gate * 39*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40*0Sstevel@tonic-gate * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42*0Sstevel@tonic-gate * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43*0Sstevel@tonic-gate * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44*0Sstevel@tonic-gate * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45*0Sstevel@tonic-gate * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46*0Sstevel@tonic-gate * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48*0Sstevel@tonic-gate * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49*0Sstevel@tonic-gate * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50*0Sstevel@tonic-gate * OF THE POSSIBILITY OF SUCH DAMAGE. 51*0Sstevel@tonic-gate * ==================================================================== 52*0Sstevel@tonic-gate * 53*0Sstevel@tonic-gate * This product includes cryptographic software written by Eric Young 54*0Sstevel@tonic-gate * (eay@cryptsoft.com). This product includes software written by Tim 55*0Sstevel@tonic-gate * Hudson (tjh@cryptsoft.com). 56*0Sstevel@tonic-gate * 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 #ifndef NO_ASN1_OLD 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate /* ASN1 packing and unpacking functions */ 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate /* Turn an ASN1 encoded SEQUENCE OF into a STACK of structures */ 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate STACK *ASN1_seq_unpack(unsigned char *buf, int len, char *(*d2i)(), 70*0Sstevel@tonic-gate void (*free_func)(void *)) 71*0Sstevel@tonic-gate { 72*0Sstevel@tonic-gate STACK *sk; 73*0Sstevel@tonic-gate unsigned char *pbuf; 74*0Sstevel@tonic-gate pbuf = buf; 75*0Sstevel@tonic-gate if (!(sk = d2i_ASN1_SET(NULL, &pbuf, len, d2i, free_func, 76*0Sstevel@tonic-gate V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL))) 77*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_SEQ_UNPACK,ASN1_R_DECODE_ERROR); 78*0Sstevel@tonic-gate return sk; 79*0Sstevel@tonic-gate } 80*0Sstevel@tonic-gate 81*0Sstevel@tonic-gate /* Turn a STACK structures into an ASN1 encoded SEQUENCE OF structure in a 82*0Sstevel@tonic-gate * OPENSSL_malloc'ed buffer 83*0Sstevel@tonic-gate */ 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate unsigned char *ASN1_seq_pack(STACK *safes, int (*i2d)(), unsigned char **buf, 86*0Sstevel@tonic-gate int *len) 87*0Sstevel@tonic-gate { 88*0Sstevel@tonic-gate int safelen; 89*0Sstevel@tonic-gate unsigned char *safe, *p; 90*0Sstevel@tonic-gate if (!(safelen = i2d_ASN1_SET(safes, NULL, i2d, V_ASN1_SEQUENCE, 91*0Sstevel@tonic-gate V_ASN1_UNIVERSAL, IS_SEQUENCE))) { 92*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_SEQ_PACK,ASN1_R_ENCODE_ERROR); 93*0Sstevel@tonic-gate return NULL; 94*0Sstevel@tonic-gate } 95*0Sstevel@tonic-gate if (!(safe = OPENSSL_malloc (safelen))) { 96*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_SEQ_PACK,ERR_R_MALLOC_FAILURE); 97*0Sstevel@tonic-gate return NULL; 98*0Sstevel@tonic-gate } 99*0Sstevel@tonic-gate p = safe; 100*0Sstevel@tonic-gate i2d_ASN1_SET(safes, &p, i2d, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 101*0Sstevel@tonic-gate IS_SEQUENCE); 102*0Sstevel@tonic-gate if (len) *len = safelen; 103*0Sstevel@tonic-gate if (buf) *buf = safe; 104*0Sstevel@tonic-gate return safe; 105*0Sstevel@tonic-gate } 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate /* Extract an ASN1 object from an ASN1_STRING */ 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate void *ASN1_unpack_string (ASN1_STRING *oct, char *(*d2i)()) 110*0Sstevel@tonic-gate { 111*0Sstevel@tonic-gate unsigned char *p; 112*0Sstevel@tonic-gate char *ret; 113*0Sstevel@tonic-gate 114*0Sstevel@tonic-gate p = oct->data; 115*0Sstevel@tonic-gate if(!(ret = d2i(NULL, &p, oct->length))) 116*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_UNPACK_STRING,ASN1_R_DECODE_ERROR); 117*0Sstevel@tonic-gate return ret; 118*0Sstevel@tonic-gate } 119*0Sstevel@tonic-gate 120*0Sstevel@tonic-gate /* Pack an ASN1 object into an ASN1_STRING */ 121*0Sstevel@tonic-gate 122*0Sstevel@tonic-gate ASN1_STRING *ASN1_pack_string(void *obj, int (*i2d)(), ASN1_STRING **oct) 123*0Sstevel@tonic-gate { 124*0Sstevel@tonic-gate unsigned char *p; 125*0Sstevel@tonic-gate ASN1_STRING *octmp; 126*0Sstevel@tonic-gate 127*0Sstevel@tonic-gate if (!oct || !*oct) { 128*0Sstevel@tonic-gate if (!(octmp = ASN1_STRING_new ())) { 129*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE); 130*0Sstevel@tonic-gate return NULL; 131*0Sstevel@tonic-gate } 132*0Sstevel@tonic-gate if (oct) *oct = octmp; 133*0Sstevel@tonic-gate } else octmp = *oct; 134*0Sstevel@tonic-gate 135*0Sstevel@tonic-gate if (!(octmp->length = i2d(obj, NULL))) { 136*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_PACK_STRING,ASN1_R_ENCODE_ERROR); 137*0Sstevel@tonic-gate return NULL; 138*0Sstevel@tonic-gate } 139*0Sstevel@tonic-gate if (!(p = OPENSSL_malloc (octmp->length))) { 140*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE); 141*0Sstevel@tonic-gate return NULL; 142*0Sstevel@tonic-gate } 143*0Sstevel@tonic-gate octmp->data = p; 144*0Sstevel@tonic-gate i2d (obj, &p); 145*0Sstevel@tonic-gate return octmp; 146*0Sstevel@tonic-gate } 147*0Sstevel@tonic-gate 148*0Sstevel@tonic-gate #endif 149*0Sstevel@tonic-gate 150*0Sstevel@tonic-gate /* ASN1_ITEM versions of the above */ 151*0Sstevel@tonic-gate 152*0Sstevel@tonic-gate ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_STRING **oct) 153*0Sstevel@tonic-gate { 154*0Sstevel@tonic-gate ASN1_STRING *octmp; 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate if (!oct || !*oct) { 157*0Sstevel@tonic-gate if (!(octmp = ASN1_STRING_new ())) { 158*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE); 159*0Sstevel@tonic-gate return NULL; 160*0Sstevel@tonic-gate } 161*0Sstevel@tonic-gate if (oct) *oct = octmp; 162*0Sstevel@tonic-gate } else octmp = *oct; 163*0Sstevel@tonic-gate 164*0Sstevel@tonic-gate if(octmp->data) { 165*0Sstevel@tonic-gate OPENSSL_free(octmp->data); 166*0Sstevel@tonic-gate octmp->data = NULL; 167*0Sstevel@tonic-gate } 168*0Sstevel@tonic-gate 169*0Sstevel@tonic-gate if (!(octmp->length = ASN1_item_i2d(obj, &octmp->data, it))) { 170*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_PACK_STRING,ASN1_R_ENCODE_ERROR); 171*0Sstevel@tonic-gate return NULL; 172*0Sstevel@tonic-gate } 173*0Sstevel@tonic-gate if (!octmp->data) { 174*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE); 175*0Sstevel@tonic-gate return NULL; 176*0Sstevel@tonic-gate } 177*0Sstevel@tonic-gate return octmp; 178*0Sstevel@tonic-gate } 179*0Sstevel@tonic-gate 180*0Sstevel@tonic-gate /* Extract an ASN1 object from an ASN1_STRING */ 181*0Sstevel@tonic-gate 182*0Sstevel@tonic-gate void *ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it) 183*0Sstevel@tonic-gate { 184*0Sstevel@tonic-gate unsigned char *p; 185*0Sstevel@tonic-gate void *ret; 186*0Sstevel@tonic-gate 187*0Sstevel@tonic-gate p = oct->data; 188*0Sstevel@tonic-gate if(!(ret = ASN1_item_d2i(NULL, &p, oct->length, it))) 189*0Sstevel@tonic-gate ASN1err(ASN1_F_ASN1_UNPACK_STRING,ASN1_R_DECODE_ERROR); 190*0Sstevel@tonic-gate return ret; 191*0Sstevel@tonic-gate } 192