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| 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 <limits.h> | |
| 61 #include "cryptlib.h" | |
| 62 #include <openssl/buffer.h> | |
| 63 #include <openssl/asn1.h> | |
| 64 #include <openssl/objects.h> | |
| 65 #include <openssl/bn.h> | |
| 66 | |
| 67 int i2d_ASN1_OBJECT(ASN1_OBJECT *a, unsigned char **pp) | |
| 68 { | |
| 69 unsigned char *p; | |
| 70 int objsize; | |
| 71 | |
| 72 if ((a == NULL) || (a->data == NULL)) return(0); | |
| 73 | |
| 74 objsize = ASN1_object_size(0,a->length,V_ASN1_OBJECT); | |
| 75 if (pp == NULL) return objsize; | |
| 76 | |
| 77 p= *pp; | |
| 78 ASN1_put_object(&p,0,a->length,V_ASN1_OBJECT,V_ASN1_UNIVERSAL); | |
| 79 memcpy(p,a->data,a->length); | |
| 80 p+=a->length; | |
| 81 | |
| 82 *pp=p; | |
| 83 return(objsize); | |
| 84 } | |
| 85 | |
| 86 int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num) | |
| 87 { | |
| 88 int i,first,len=0,c, use_bn; | |
| 89 char ftmp[24], *tmp = ftmp; | |
| 90 int tmpsize = sizeof ftmp; | |
| 91 const char *p; | |
| 92 unsigned long l; | |
| 93 BIGNUM *bl = NULL; | |
| 94 | |
| 95 if (num == 0) | |
| 96 return(0); | |
| 97 else if (num == -1) | |
| 98 num=strlen(buf); | |
| 99 | |
| 100 p=buf; | |
| 101 c= *(p++); | |
| 102 num--; | |
| 103 if ((c >= '0') && (c <= '2')) | |
| 104 { | |
| 105 first= c-'0'; | |
| 106 } | |
| 107 else | |
| 108 { | |
| 109 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_FIRST_NUM_TOO_LARGE); | |
| 110 goto err; | |
| 111 } | |
| 112 | |
| 113 if (num <= 0) | |
| 114 { | |
| 115 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_MISSING_SECOND_NUMBER); | |
| 116 goto err; | |
| 117 } | |
| 118 c= *(p++); | |
| 119 num--; | |
| 120 for (;;) | |
| 121 { | |
| 122 if (num <= 0) break; | |
| 123 if ((c != '.') && (c != ' ')) | |
| 124 { | |
| 125 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_SEPARATOR)
; | |
| 126 goto err; | |
| 127 } | |
| 128 l=0; | |
| 129 use_bn = 0; | |
| 130 for (;;) | |
| 131 { | |
| 132 if (num <= 0) break; | |
| 133 num--; | |
| 134 c= *(p++); | |
| 135 if ((c == ' ') || (c == '.')) | |
| 136 break; | |
| 137 if ((c < '0') || (c > '9')) | |
| 138 { | |
| 139 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_DI
GIT); | |
| 140 goto err; | |
| 141 } | |
| 142 if (!use_bn && l >= ((ULONG_MAX - 80) / 10L)) | |
| 143 { | |
| 144 use_bn = 1; | |
| 145 if (!bl) | |
| 146 bl = BN_new(); | |
| 147 if (!bl || !BN_set_word(bl, l)) | |
| 148 goto err; | |
| 149 } | |
| 150 if (use_bn) | |
| 151 { | |
| 152 if (!BN_mul_word(bl, 10L) | |
| 153 || !BN_add_word(bl, c-'0')) | |
| 154 goto err; | |
| 155 } | |
| 156 else | |
| 157 l=l*10L+(long)(c-'0'); | |
| 158 } | |
| 159 if (len == 0) | |
| 160 { | |
| 161 if ((first < 2) && (l >= 40)) | |
| 162 { | |
| 163 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_SECOND_NUM
BER_TOO_LARGE); | |
| 164 goto err; | |
| 165 } | |
| 166 if (use_bn) | |
| 167 { | |
| 168 if (!BN_add_word(bl, first * 40)) | |
| 169 goto err; | |
| 170 } | |
| 171 else | |
| 172 l+=(long)first*40; | |
| 173 } | |
| 174 i=0; | |
| 175 if (use_bn) | |
| 176 { | |
| 177 int blsize; | |
| 178 blsize = BN_num_bits(bl); | |
| 179 blsize = (blsize + 6)/7; | |
| 180 if (blsize > tmpsize) | |
| 181 { | |
| 182 if (tmp != ftmp) | |
| 183 OPENSSL_free(tmp); | |
| 184 tmpsize = blsize + 32; | |
| 185 tmp = OPENSSL_malloc(tmpsize); | |
| 186 if (!tmp) | |
| 187 goto err; | |
| 188 } | |
| 189 while(blsize--) | |
| 190 tmp[i++] = (unsigned char)BN_div_word(bl, 0x80L)
; | |
| 191 } | |
| 192 else | |
| 193 { | |
| 194 | |
| 195 for (;;) | |
| 196 { | |
| 197 tmp[i++]=(unsigned char)l&0x7f; | |
| 198 l>>=7L; | |
| 199 if (l == 0L) break; | |
| 200 } | |
| 201 | |
| 202 } | |
| 203 if (out != NULL) | |
| 204 { | |
| 205 if (len+i > olen) | |
| 206 { | |
| 207 ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_BUFFER_TOO
_SMALL); | |
| 208 goto err; | |
| 209 } | |
| 210 while (--i > 0) | |
| 211 out[len++]=tmp[i]|0x80; | |
| 212 out[len++]=tmp[0]; | |
| 213 } | |
| 214 else | |
| 215 len+=i; | |
| 216 } | |
| 217 if (tmp != ftmp) | |
| 218 OPENSSL_free(tmp); | |
| 219 if (bl) | |
| 220 BN_free(bl); | |
| 221 return(len); | |
| 222 err: | |
| 223 if (tmp != ftmp) | |
| 224 OPENSSL_free(tmp); | |
| 225 if (bl) | |
| 226 BN_free(bl); | |
| 227 return(0); | |
| 228 } | |
| 229 | |
| 230 int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a) | |
| 231 { | |
| 232 return OBJ_obj2txt(buf, buf_len, a, 0); | |
| 233 } | |
| 234 | |
| 235 int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a) | |
| 236 { | |
| 237 char buf[80], *p = buf; | |
| 238 int i; | |
| 239 | |
| 240 if ((a == NULL) || (a->data == NULL)) | |
| 241 return(BIO_write(bp,"NULL",4)); | |
| 242 i=i2t_ASN1_OBJECT(buf,sizeof buf,a); | |
| 243 if (i > (int)(sizeof(buf) - 1)) | |
| 244 { | |
| 245 p = OPENSSL_malloc(i + 1); | |
| 246 if (!p) | |
| 247 return -1; | |
| 248 i2t_ASN1_OBJECT(p,i + 1,a); | |
| 249 } | |
| 250 if (i <= 0) | |
| 251 return BIO_write(bp, "<INVALID>", 9); | |
| 252 BIO_write(bp,p,i); | |
| 253 if (p != buf) | |
| 254 OPENSSL_free(p); | |
| 255 return(i); | |
| 256 } | |
| 257 | |
| 258 ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp, | |
| 259 long length) | |
| 260 { | |
| 261 const unsigned char *p; | |
| 262 long len; | |
| 263 int tag,xclass; | |
| 264 int inf,i; | |
| 265 ASN1_OBJECT *ret = NULL; | |
| 266 p= *pp; | |
| 267 inf=ASN1_get_object(&p,&len,&tag,&xclass,length); | |
| 268 if (inf & 0x80) | |
| 269 { | |
| 270 i=ASN1_R_BAD_OBJECT_HEADER; | |
| 271 goto err; | |
| 272 } | |
| 273 | |
| 274 if (tag != V_ASN1_OBJECT) | |
| 275 { | |
| 276 i=ASN1_R_EXPECTING_AN_OBJECT; | |
| 277 goto err; | |
| 278 } | |
| 279 ret = c2i_ASN1_OBJECT(a, &p, len); | |
| 280 if(ret) *pp = p; | |
| 281 return ret; | |
| 282 err: | |
| 283 ASN1err(ASN1_F_D2I_ASN1_OBJECT,i); | |
| 284 return(NULL); | |
| 285 } | |
| 286 ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp, | |
| 287 long len) | |
| 288 { | |
| 289 ASN1_OBJECT *ret=NULL; | |
| 290 const unsigned char *p; | |
| 291 unsigned char *data; | |
| 292 int i; | |
| 293 /* Sanity check OID encoding: can't have leading 0x80 in | |
| 294 * subidentifiers, see: X.690 8.19.2 | |
| 295 */ | |
| 296 for (i = 0, p = *pp; i < len; i++, p++) | |
| 297 { | |
| 298 if (*p == 0x80 && (!i || !(p[-1] & 0x80))) | |
| 299 { | |
| 300 ASN1err(ASN1_F_C2I_ASN1_OBJECT,ASN1_R_INVALID_OBJECT_ENC
ODING); | |
| 301 return NULL; | |
| 302 } | |
| 303 } | |
| 304 | |
| 305 /* only the ASN1_OBJECTs from the 'table' will have values | |
| 306 * for ->sn or ->ln */ | |
| 307 if ((a == NULL) || ((*a) == NULL) || | |
| 308 !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC)) | |
| 309 { | |
| 310 if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL); | |
| 311 } | |
| 312 else ret=(*a); | |
| 313 | |
| 314 p= *pp; | |
| 315 /* detach data from object */ | |
| 316 data = (unsigned char *)ret->data; | |
| 317 ret->data = NULL; | |
| 318 /* once detached we can change it */ | |
| 319 if ((data == NULL) || (ret->length < len)) | |
| 320 { | |
| 321 ret->length=0; | |
| 322 if (data != NULL) OPENSSL_free(data); | |
| 323 data=(unsigned char *)OPENSSL_malloc(len ? (int)len : 1); | |
| 324 if (data == NULL) | |
| 325 { i=ERR_R_MALLOC_FAILURE; goto err; } | |
| 326 ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA; | |
| 327 } | |
| 328 memcpy(data,p,(int)len); | |
| 329 /* reattach data to object, after which it remains const */ | |
| 330 ret->data =data; | |
| 331 ret->length=(int)len; | |
| 332 ret->sn=NULL; | |
| 333 ret->ln=NULL; | |
| 334 /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */ | |
| 335 p+=len; | |
| 336 | |
| 337 if (a != NULL) (*a)=ret; | |
| 338 *pp=p; | |
| 339 return(ret); | |
| 340 err: | |
| 341 ASN1err(ASN1_F_C2I_ASN1_OBJECT,i); | |
| 342 if ((ret != NULL) && ((a == NULL) || (*a != ret))) | |
| 343 ASN1_OBJECT_free(ret); | |
| 344 return(NULL); | |
| 345 } | |
| 346 | |
| 347 ASN1_OBJECT *ASN1_OBJECT_new(void) | |
| 348 { | |
| 349 ASN1_OBJECT *ret; | |
| 350 | |
| 351 ret=(ASN1_OBJECT *)OPENSSL_malloc(sizeof(ASN1_OBJECT)); | |
| 352 if (ret == NULL) | |
| 353 { | |
| 354 ASN1err(ASN1_F_ASN1_OBJECT_NEW,ERR_R_MALLOC_FAILURE); | |
| 355 return(NULL); | |
| 356 } | |
| 357 ret->length=0; | |
| 358 ret->data=NULL; | |
| 359 ret->nid=0; | |
| 360 ret->sn=NULL; | |
| 361 ret->ln=NULL; | |
| 362 ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; | |
| 363 return(ret); | |
| 364 } | |
| 365 | |
| 366 void ASN1_OBJECT_free(ASN1_OBJECT *a) | |
| 367 { | |
| 368 if (a == NULL) return; | |
| 369 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) | |
| 370 { | |
| 371 #ifndef CONST_STRICT /* disable purely for compile-time strict const checking. D
oing this on a "real" compile will cause memory leaks */ | |
| 372 if (a->sn != NULL) OPENSSL_free((void *)a->sn); | |
| 373 if (a->ln != NULL) OPENSSL_free((void *)a->ln); | |
| 374 #endif | |
| 375 a->sn=a->ln=NULL; | |
| 376 } | |
| 377 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA) | |
| 378 { | |
| 379 if (a->data != NULL) OPENSSL_free((void *)a->data); | |
| 380 a->data=NULL; | |
| 381 a->length=0; | |
| 382 } | |
| 383 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC) | |
| 384 OPENSSL_free(a); | |
| 385 } | |
| 386 | |
| 387 ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len, | |
| 388 const char *sn, const char *ln) | |
| 389 { | |
| 390 ASN1_OBJECT o; | |
| 391 | |
| 392 o.sn=sn; | |
| 393 o.ln=ln; | |
| 394 o.data=data; | |
| 395 o.nid=nid; | |
| 396 o.length=len; | |
| 397 o.flags=ASN1_OBJECT_FLAG_DYNAMIC|ASN1_OBJECT_FLAG_DYNAMIC_STRINGS| | |
| 398 ASN1_OBJECT_FLAG_DYNAMIC_DATA; | |
| 399 return(OBJ_dup(&o)); | |
| 400 } | |
| 401 | |
| 402 IMPLEMENT_STACK_OF(ASN1_OBJECT) | |
| 403 IMPLEMENT_ASN1_SET_OF(ASN1_OBJECT) | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master