a_object.c revision 109998
1/* crypto/asn1/a_object.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/buffer.h> 62#include <openssl/asn1.h> 63#include <openssl/objects.h> 64 65int i2d_ASN1_OBJECT(ASN1_OBJECT *a, unsigned char **pp) 66 { 67 unsigned char *p; 68 int objsize; 69 70 if ((a == NULL) || (a->data == NULL)) return(0); 71 72 objsize = ASN1_object_size(0,a->length,V_ASN1_OBJECT); 73 if (pp == NULL) return objsize; 74 75 p= *pp; 76 ASN1_put_object(&p,0,a->length,V_ASN1_OBJECT,V_ASN1_UNIVERSAL); 77 memcpy(p,a->data,a->length); 78 p+=a->length; 79 80 *pp=p; 81 return(objsize); 82 } 83 84int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num) 85 { 86 int i,first,len=0,c; 87 char tmp[24]; 88 const char *p; 89 unsigned long l; 90 91 if (num == 0) 92 return(0); 93 else if (num == -1) 94 num=strlen(buf); 95 96 p=buf; 97 c= *(p++); 98 num--; 99 if ((c >= '0') && (c <= '2')) 100 { 101 first=(c-'0')*40; 102 } 103 else 104 { 105 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_FIRST_NUM_TOO_LARGE); 106 goto err; 107 } 108 109 if (num <= 0) 110 { 111 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_MISSING_SECOND_NUMBER); 112 goto err; 113 } 114 c= *(p++); 115 num--; 116 for (;;) 117 { 118 if (num <= 0) break; 119 if ((c != '.') && (c != ' ')) 120 { 121 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_SEPARATOR); 122 goto err; 123 } 124 l=0; 125 for (;;) 126 { 127 if (num <= 0) break; 128 num--; 129 c= *(p++); 130 if ((c == ' ') || (c == '.')) 131 break; 132 if ((c < '0') || (c > '9')) 133 { 134 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_DIGIT); 135 goto err; 136 } 137 l=l*10L+(long)(c-'0'); 138 } 139 if (len == 0) 140 { 141 if ((first < 2) && (l >= 40)) 142 { 143 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_SECOND_NUMBER_TOO_LARGE); 144 goto err; 145 } 146 l+=(long)first; 147 } 148 i=0; 149 for (;;) 150 { 151 tmp[i++]=(unsigned char)l&0x7f; 152 l>>=7L; 153 if (l == 0L) break; 154 } 155 if (out != NULL) 156 { 157 if (len+i > olen) 158 { 159 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_BUFFER_TOO_SMALL); 160 goto err; 161 } 162 while (--i > 0) 163 out[len++]=tmp[i]|0x80; 164 out[len++]=tmp[0]; 165 } 166 else 167 len+=i; 168 } 169 return(len); 170err: 171 return(0); 172 } 173 174int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a) 175{ 176 return OBJ_obj2txt(buf, buf_len, a, 0); 177} 178 179int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a) 180 { 181 char buf[80]; 182 int i; 183 184 if ((a == NULL) || (a->data == NULL)) 185 return(BIO_write(bp,"NULL",4)); 186 i=i2t_ASN1_OBJECT(buf,sizeof buf,a); 187 if (i > sizeof buf) i=sizeof buf; 188 BIO_write(bp,buf,i); 189 return(i); 190 } 191 192ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, unsigned char **pp, 193 long length) 194{ 195 unsigned char *p; 196 long len; 197 int tag,xclass; 198 int inf,i; 199 ASN1_OBJECT *ret = NULL; 200 p= *pp; 201 inf=ASN1_get_object(&p,&len,&tag,&xclass,length); 202 if (inf & 0x80) 203 { 204 i=ASN1_R_BAD_OBJECT_HEADER; 205 goto err; 206 } 207 208 if (tag != V_ASN1_OBJECT) 209 { 210 i=ASN1_R_EXPECTING_AN_OBJECT; 211 goto err; 212 } 213 ret = c2i_ASN1_OBJECT(a, &p, len); 214 if(ret) *pp = p; 215 return ret; 216err: 217 ASN1err(ASN1_F_D2I_ASN1_OBJECT,i); 218 if ((ret != NULL) && ((a == NULL) || (*a != ret))) 219 ASN1_OBJECT_free(ret); 220 return(NULL); 221} 222ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, unsigned char **pp, 223 long len) 224 { 225 ASN1_OBJECT *ret=NULL; 226 unsigned char *p; 227 int i; 228 229 /* only the ASN1_OBJECTs from the 'table' will have values 230 * for ->sn or ->ln */ 231 if ((a == NULL) || ((*a) == NULL) || 232 !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC)) 233 { 234 if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL); 235 } 236 else ret=(*a); 237 238 p= *pp; 239 if ((ret->data == NULL) || (ret->length < len)) 240 { 241 if (ret->data != NULL) OPENSSL_free(ret->data); 242 ret->data=(unsigned char *)OPENSSL_malloc(len ? (int)len : 1); 243 ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA; 244 if (ret->data == NULL) 245 { i=ERR_R_MALLOC_FAILURE; goto err; } 246 } 247 memcpy(ret->data,p,(int)len); 248 ret->length=(int)len; 249 ret->sn=NULL; 250 ret->ln=NULL; 251 /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */ 252 p+=len; 253 254 if (a != NULL) (*a)=ret; 255 *pp=p; 256 return(ret); 257err: 258 ASN1err(ASN1_F_D2I_ASN1_OBJECT,i); 259 if ((ret != NULL) && ((a == NULL) || (*a != ret))) 260 ASN1_OBJECT_free(ret); 261 return(NULL); 262 } 263 264ASN1_OBJECT *ASN1_OBJECT_new(void) 265 { 266 ASN1_OBJECT *ret; 267 268 ret=(ASN1_OBJECT *)OPENSSL_malloc(sizeof(ASN1_OBJECT)); 269 if (ret == NULL) 270 { 271 ASN1err(ASN1_F_ASN1_OBJECT_NEW,ERR_R_MALLOC_FAILURE); 272 return(NULL); 273 } 274 ret->length=0; 275 ret->data=NULL; 276 ret->nid=0; 277 ret->sn=NULL; 278 ret->ln=NULL; 279 ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; 280 return(ret); 281 } 282 283void ASN1_OBJECT_free(ASN1_OBJECT *a) 284 { 285 if (a == NULL) return; 286 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) 287 { 288#ifndef CONST_STRICT /* disable purely for compile-time strict const checking. Doing this on a "real" compile will cause memory leaks */ 289 if (a->sn != NULL) OPENSSL_free((void *)a->sn); 290 if (a->ln != NULL) OPENSSL_free((void *)a->ln); 291#endif 292 a->sn=a->ln=NULL; 293 } 294 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA) 295 { 296 if (a->data != NULL) OPENSSL_free(a->data); 297 a->data=NULL; 298 a->length=0; 299 } 300 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC) 301 OPENSSL_free(a); 302 } 303 304ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len, 305 const char *sn, const char *ln) 306 { 307 ASN1_OBJECT o; 308 309 o.sn=sn; 310 o.ln=ln; 311 o.data=data; 312 o.nid=nid; 313 o.length=len; 314 o.flags=ASN1_OBJECT_FLAG_DYNAMIC|ASN1_OBJECT_FLAG_DYNAMIC_STRINGS| 315 ASN1_OBJECT_FLAG_DYNAMIC_DATA; 316 return(OBJ_dup(&o)); 317 } 318 319IMPLEMENT_STACK_OF(ASN1_OBJECT) 320IMPLEMENT_ASN1_SET_OF(ASN1_OBJECT) 321