1/* crypto/asn1/a_set.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59#include <stdio.h> 60#include "cryptlib.h" 61#include <openssl/asn1_mac.h> 62 63#ifndef NO_ASN1_OLD 64 65typedef struct 66 { 67 unsigned char *pbData; 68 int cbData; 69 } MYBLOB; 70 71/* SetBlobCmp 72 * This function compares two elements of SET_OF block 73 */ 74static int SetBlobCmp(const void *elem1, const void *elem2 ) 75 { 76 const MYBLOB *b1 = (const MYBLOB *)elem1; 77 const MYBLOB *b2 = (const MYBLOB *)elem2; 78 int r; 79 80 r = memcmp(b1->pbData, b2->pbData, 81 b1->cbData < b2->cbData ? b1->cbData : b2->cbData); 82 if(r != 0) 83 return r; 84 return b1->cbData-b2->cbData; 85 } 86 87/* int is_set: if TRUE, then sort the contents (i.e. it isn't a SEQUENCE) */ 88int i2d_ASN1_SET(STACK_OF(OPENSSL_BLOCK) *a, unsigned char **pp, 89 i2d_of_void *i2d, int ex_tag, int ex_class, 90 int is_set) 91 { 92 int ret=0,r; 93 int i; 94 unsigned char *p; 95 unsigned char *pStart, *pTempMem; 96 MYBLOB *rgSetBlob; 97 int totSize; 98 99 if (a == NULL) return(0); 100 for (i=sk_OPENSSL_BLOCK_num(a)-1; i>=0; i--) 101 ret+=i2d(sk_OPENSSL_BLOCK_value(a,i),NULL); 102 r=ASN1_object_size(1,ret,ex_tag); 103 if (pp == NULL) return(r); 104 105 p= *pp; 106 ASN1_put_object(&p,1,ret,ex_tag,ex_class); 107 108/* Modified by gp@nsj.co.jp */ 109 /* And then again by Ben */ 110 /* And again by Steve */ 111 112 if(!is_set || (sk_OPENSSL_BLOCK_num(a) < 2)) 113 { 114 for (i=0; i<sk_OPENSSL_BLOCK_num(a); i++) 115 i2d(sk_OPENSSL_BLOCK_value(a,i),&p); 116 117 *pp=p; 118 return(r); 119 } 120 121 pStart = p; /* Catch the beg of Setblobs*/ 122 /* In this array we will store the SET blobs */ 123 rgSetBlob = OPENSSL_malloc(sk_OPENSSL_BLOCK_num(a) * sizeof(MYBLOB)); 124 if (rgSetBlob == NULL) 125 { 126 ASN1err(ASN1_F_I2D_ASN1_SET,ERR_R_MALLOC_FAILURE); 127 return(0); 128 } 129 130 for (i=0; i<sk_OPENSSL_BLOCK_num(a); i++) 131 { 132 rgSetBlob[i].pbData = p; /* catch each set encode blob */ 133 i2d(sk_OPENSSL_BLOCK_value(a,i),&p); 134 rgSetBlob[i].cbData = p - rgSetBlob[i].pbData; /* Length of this 135SetBlob 136*/ 137 } 138 *pp=p; 139 totSize = p - pStart; /* This is the total size of all set blobs */ 140 141 /* Now we have to sort the blobs. I am using a simple algo. 142 *Sort ptrs *Copy to temp-mem *Copy from temp-mem to user-mem*/ 143 qsort( rgSetBlob, sk_OPENSSL_BLOCK_num(a), sizeof(MYBLOB), SetBlobCmp); 144 if (!(pTempMem = OPENSSL_malloc(totSize))) 145 { 146 ASN1err(ASN1_F_I2D_ASN1_SET,ERR_R_MALLOC_FAILURE); 147 return(0); 148 } 149 150/* Copy to temp mem */ 151 p = pTempMem; 152 for(i=0; i<sk_OPENSSL_BLOCK_num(a); ++i) 153 { 154 memcpy(p, rgSetBlob[i].pbData, rgSetBlob[i].cbData); 155 p += rgSetBlob[i].cbData; 156 } 157 158/* Copy back to user mem*/ 159 memcpy(pStart, pTempMem, totSize); 160 OPENSSL_free(pTempMem); 161 OPENSSL_free(rgSetBlob); 162 163 return(r); 164 } 165 166STACK_OF(OPENSSL_BLOCK) *d2i_ASN1_SET(STACK_OF(OPENSSL_BLOCK) **a, 167 const unsigned char **pp, 168 long length, d2i_of_void *d2i, 169 void (*free_func)(OPENSSL_BLOCK), int ex_tag, 170 int ex_class) 171 { 172 ASN1_const_CTX c; 173 STACK_OF(OPENSSL_BLOCK) *ret=NULL; 174 175 if ((a == NULL) || ((*a) == NULL)) 176 { 177 if ((ret=sk_OPENSSL_BLOCK_new_null()) == NULL) 178 { 179 ASN1err(ASN1_F_D2I_ASN1_SET,ERR_R_MALLOC_FAILURE); 180 goto err; 181 } 182 } 183 else 184 ret=(*a); 185 186 c.p= *pp; 187 c.max=(length == 0)?0:(c.p+length); 188 189 c.inf=ASN1_get_object(&c.p,&c.slen,&c.tag,&c.xclass,c.max-c.p); 190 if (c.inf & 0x80) goto err; 191 if (ex_class != c.xclass) 192 { 193 ASN1err(ASN1_F_D2I_ASN1_SET,ASN1_R_BAD_CLASS); 194 goto err; 195 } 196 if (ex_tag != c.tag) 197 { 198 ASN1err(ASN1_F_D2I_ASN1_SET,ASN1_R_BAD_TAG); 199 goto err; 200 } 201 if ((c.slen+c.p) > c.max) 202 { 203 ASN1err(ASN1_F_D2I_ASN1_SET,ASN1_R_LENGTH_ERROR); 204 goto err; 205 } 206 /* check for infinite constructed - it can be as long 207 * as the amount of data passed to us */ 208 if (c.inf == (V_ASN1_CONSTRUCTED+1)) 209 c.slen=length+ *pp-c.p; 210 c.max=c.p+c.slen; 211 212 while (c.p < c.max) 213 { 214 char *s; 215 216 if (M_ASN1_D2I_end_sequence()) break; 217 /* XXX: This was called with 4 arguments, incorrectly, it seems 218 if ((s=func(NULL,&c.p,c.slen,c.max-c.p)) == NULL) */ 219 if ((s=d2i(NULL,&c.p,c.slen)) == NULL) 220 { 221 ASN1err(ASN1_F_D2I_ASN1_SET,ASN1_R_ERROR_PARSING_SET_ELEMENT); 222 asn1_add_error(*pp,(int)(c.p- *pp)); 223 goto err; 224 } 225 if (!sk_OPENSSL_BLOCK_push(ret,s)) goto err; 226 } 227 if (a != NULL) (*a)=ret; 228 *pp=c.p; 229 return(ret); 230err: 231 if ((ret != NULL) && ((a == NULL) || (*a != ret))) 232 { 233 if (free_func != NULL) 234 sk_OPENSSL_BLOCK_pop_free(ret,free_func); 235 else 236 sk_OPENSSL_BLOCK_free(ret); 237 } 238 return(NULL); 239 } 240 241#endif 242