a_object.c revision 55714
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 69 if ((a == NULL) || (a->data == NULL)) return(0); 70 71 if (pp == NULL) 72 return(ASN1_object_size(0,a->length,V_ASN1_OBJECT)); 73 74 p= *pp; 75 ASN1_put_object(&p,0,a->length,V_ASN1_OBJECT,V_ASN1_UNIVERSAL); 76 memcpy(p,a->data,a->length); 77 p+=a->length; 78 79 *pp=p; 80 return(a->length); 81 } 82 83int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num) 84 { 85 int i,first,len=0,c; 86 char tmp[24]; 87 const char *p; 88 unsigned long l; 89 90 if (num == 0) 91 return(0); 92 else if (num == -1) 93 num=strlen(buf); 94 95 p=buf; 96 c= *(p++); 97 num--; 98 if ((c >= '0') && (c <= '2')) 99 { 100 first=(c-'0')*40; 101 } 102 else 103 { 104 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_FIRST_NUM_TOO_LARGE); 105 goto err; 106 } 107 108 if (num <= 0) 109 { 110 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_MISSING_SECOND_NUMBER); 111 goto err; 112 } 113 c= *(p++); 114 num--; 115 for (;;) 116 { 117 if (num <= 0) break; 118 if ((c != '.') && (c != ' ')) 119 { 120 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_SEPARATOR); 121 goto err; 122 } 123 l=0; 124 for (;;) 125 { 126 if (num <= 0) break; 127 num--; 128 c= *(p++); 129 if ((c == ' ') || (c == '.')) 130 break; 131 if ((c < '0') || (c > '9')) 132 { 133 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_DIGIT); 134 goto err; 135 } 136 l=l*10L+(long)(c-'0'); 137 } 138 if (len == 0) 139 { 140 if ((first < 2) && (l >= 40)) 141 { 142 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_SECOND_NUMBER_TOO_LARGE); 143 goto err; 144 } 145 l+=(long)first; 146 } 147 i=0; 148 for (;;) 149 { 150 tmp[i++]=(unsigned char)l&0x7f; 151 l>>=7L; 152 if (l == 0L) break; 153 } 154 if (out != NULL) 155 { 156 if (len+i > olen) 157 { 158 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_BUFFER_TOO_SMALL); 159 goto err; 160 } 161 while (--i > 0) 162 out[len++]=tmp[i]|0x80; 163 out[len++]=tmp[0]; 164 } 165 else 166 len+=i; 167 } 168 return(len); 169err: 170 return(0); 171 } 172 173int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a) 174{ 175 return OBJ_obj2txt(buf, buf_len, a, 0); 176} 177 178int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a) 179 { 180 char buf[80]; 181 int i; 182 183 if ((a == NULL) || (a->data == NULL)) 184 return(BIO_write(bp,"NULL",4)); 185 i=i2t_ASN1_OBJECT(buf,80,a); 186 if (i > 80) i=80; 187 BIO_write(bp,buf,i); 188 return(i); 189 } 190 191ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, unsigned char **pp, 192 long length) 193 { 194 ASN1_OBJECT *ret=NULL; 195 unsigned char *p; 196 long len; 197 int tag,xclass; 198 int inf,i; 199 200 /* only the ASN1_OBJECTs from the 'table' will have values 201 * for ->sn or ->ln */ 202 if ((a == NULL) || ((*a) == NULL) || 203 !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC)) 204 { 205 if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL); 206 } 207 else ret=(*a); 208 209 p= *pp; 210 211 inf=ASN1_get_object(&p,&len,&tag,&xclass,length); 212 if (inf & 0x80) 213 { 214 i=ASN1_R_BAD_OBJECT_HEADER; 215 goto err; 216 } 217 218 if (tag != V_ASN1_OBJECT) 219 { 220 i=ASN1_R_EXPECTING_AN_OBJECT; 221 goto err; 222 } 223 if ((ret->data == NULL) || (ret->length < len)) 224 { 225 if (ret->data != NULL) Free((char *)ret->data); 226 ret->data=(unsigned char *)Malloc((int)len); 227 ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA; 228 if (ret->data == NULL) 229 { i=ERR_R_MALLOC_FAILURE; goto err; } 230 } 231 memcpy(ret->data,p,(int)len); 232 ret->length=(int)len; 233 ret->sn=NULL; 234 ret->ln=NULL; 235 /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */ 236 p+=len; 237 238 if (a != NULL) (*a)=ret; 239 *pp=p; 240 return(ret); 241err: 242 ASN1err(ASN1_F_D2I_ASN1_OBJECT,i); 243 if ((ret != NULL) && ((a == NULL) || (*a != ret))) 244 ASN1_OBJECT_free(ret); 245 return(NULL); 246 } 247 248ASN1_OBJECT *ASN1_OBJECT_new(void) 249 { 250 ASN1_OBJECT *ret; 251 252 ret=(ASN1_OBJECT *)Malloc(sizeof(ASN1_OBJECT)); 253 if (ret == NULL) 254 { 255 ASN1err(ASN1_F_ASN1_OBJECT_NEW,ERR_R_MALLOC_FAILURE); 256 return(NULL); 257 } 258 ret->length=0; 259 ret->data=NULL; 260 ret->nid=0; 261 ret->sn=NULL; 262 ret->ln=NULL; 263 ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; 264 return(ret); 265 } 266 267void ASN1_OBJECT_free(ASN1_OBJECT *a) 268 { 269 if (a == NULL) return; 270 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) 271 { 272#ifndef CONST_STRICT /* disable purely for compile-time strict const checking. Doing this on a "real" compile will cause mempory leaks */ 273 if (a->sn != NULL) Free((void *)a->sn); 274 if (a->ln != NULL) Free((void *)a->ln); 275#endif 276 a->sn=a->ln=NULL; 277 } 278 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA) 279 { 280 if (a->data != NULL) Free(a->data); 281 a->data=NULL; 282 a->length=0; 283 } 284 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC) 285 Free(a); 286 } 287 288ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len, 289 char *sn, char *ln) 290 { 291 ASN1_OBJECT o; 292 293 o.sn=sn; 294 o.ln=ln; 295 o.data=data; 296 o.nid=nid; 297 o.length=len; 298 o.flags=ASN1_OBJECT_FLAG_DYNAMIC|ASN1_OBJECT_FLAG_DYNAMIC_STRINGS| 299 ASN1_OBJECT_FLAG_DYNAMIC_DATA; 300 return(OBJ_dup(&o)); 301 } 302 303IMPLEMENT_STACK_OF(ASN1_OBJECT) 304IMPLEMENT_ASN1_SET_OF(ASN1_OBJECT) 305