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| 1 /* crypto/asn1/a_bytes.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.h> | |
| 62 | |
| 63 static int asn1_collate_primitive(ASN1_STRING *a, ASN1_const_CTX *c); | |
| 64 /* type is a 'bitmap' of acceptable string types. | |
| 65 */ | |
| 66 ASN1_STRING *d2i_ASN1_type_bytes(ASN1_STRING **a, const unsigned char **pp, | |
| 67 long length, int type) | |
| 68 { | |
| 69 ASN1_STRING *ret=NULL; | |
| 70 const unsigned char *p; | |
| 71 unsigned char *s; | |
| 72 long len; | |
| 73 int inf,tag,xclass; | |
| 74 int i=0; | |
| 75 | |
| 76 p= *pp; | |
| 77 inf=ASN1_get_object(&p,&len,&tag,&xclass,length); | |
| 78 if (inf & 0x80) goto err; | |
| 79 | |
| 80 if (tag >= 32) | |
| 81 { | |
| 82 i=ASN1_R_TAG_VALUE_TOO_HIGH; | |
| 83 goto err; | |
| 84 } | |
| 85 if (!(ASN1_tag2bit(tag) & type)) | |
| 86 { | |
| 87 i=ASN1_R_WRONG_TYPE; | |
| 88 goto err; | |
| 89 } | |
| 90 | |
| 91 /* If a bit-string, exit early */ | |
| 92 if (tag == V_ASN1_BIT_STRING) | |
| 93 return(d2i_ASN1_BIT_STRING(a,pp,length)); | |
| 94 | |
| 95 if ((a == NULL) || ((*a) == NULL)) | |
| 96 { | |
| 97 if ((ret=ASN1_STRING_new()) == NULL) return(NULL); | |
| 98 } | |
| 99 else | |
| 100 ret=(*a); | |
| 101 | |
| 102 if (len != 0) | |
| 103 { | |
| 104 s=(unsigned char *)OPENSSL_malloc((int)len+1); | |
| 105 if (s == NULL) | |
| 106 { | |
| 107 i=ERR_R_MALLOC_FAILURE; | |
| 108 goto err; | |
| 109 } | |
| 110 memcpy(s,p,(int)len); | |
| 111 s[len]='\0'; | |
| 112 p+=len; | |
| 113 } | |
| 114 else | |
| 115 s=NULL; | |
| 116 | |
| 117 if (ret->data != NULL) OPENSSL_free(ret->data); | |
| 118 ret->length=(int)len; | |
| 119 ret->data=s; | |
| 120 ret->type=tag; | |
| 121 if (a != NULL) (*a)=ret; | |
| 122 *pp=p; | |
| 123 return(ret); | |
| 124 err: | |
| 125 ASN1err(ASN1_F_D2I_ASN1_TYPE_BYTES,i); | |
| 126 if ((ret != NULL) && ((a == NULL) || (*a != ret))) | |
| 127 ASN1_STRING_free(ret); | |
| 128 return(NULL); | |
| 129 } | |
| 130 | |
| 131 int i2d_ASN1_bytes(ASN1_STRING *a, unsigned char **pp, int tag, int xclass) | |
| 132 { | |
| 133 int ret,r,constructed; | |
| 134 unsigned char *p; | |
| 135 | |
| 136 if (a == NULL) return(0); | |
| 137 | |
| 138 if (tag == V_ASN1_BIT_STRING) | |
| 139 return(i2d_ASN1_BIT_STRING(a,pp)); | |
| 140 | |
| 141 ret=a->length; | |
| 142 r=ASN1_object_size(0,ret,tag); | |
| 143 if (pp == NULL) return(r); | |
| 144 p= *pp; | |
| 145 | |
| 146 if ((tag == V_ASN1_SEQUENCE) || (tag == V_ASN1_SET)) | |
| 147 constructed=1; | |
| 148 else | |
| 149 constructed=0; | |
| 150 ASN1_put_object(&p,constructed,ret,tag,xclass); | |
| 151 memcpy(p,a->data,a->length); | |
| 152 p+=a->length; | |
| 153 *pp= p; | |
| 154 return(r); | |
| 155 } | |
| 156 | |
| 157 ASN1_STRING *d2i_ASN1_bytes(ASN1_STRING **a, const unsigned char **pp, | |
| 158 long length, int Ptag, int Pclass) | |
| 159 { | |
| 160 ASN1_STRING *ret=NULL; | |
| 161 const unsigned char *p; | |
| 162 unsigned char *s; | |
| 163 long len; | |
| 164 int inf,tag,xclass; | |
| 165 int i=0; | |
| 166 | |
| 167 if ((a == NULL) || ((*a) == NULL)) | |
| 168 { | |
| 169 if ((ret=ASN1_STRING_new()) == NULL) return(NULL); | |
| 170 } | |
| 171 else | |
| 172 ret=(*a); | |
| 173 | |
| 174 p= *pp; | |
| 175 inf=ASN1_get_object(&p,&len,&tag,&xclass,length); | |
| 176 if (inf & 0x80) | |
| 177 { | |
| 178 i=ASN1_R_BAD_OBJECT_HEADER; | |
| 179 goto err; | |
| 180 } | |
| 181 | |
| 182 if (tag != Ptag) | |
| 183 { | |
| 184 i=ASN1_R_WRONG_TAG; | |
| 185 goto err; | |
| 186 } | |
| 187 | |
| 188 if (inf & V_ASN1_CONSTRUCTED) | |
| 189 { | |
| 190 ASN1_const_CTX c; | |
| 191 | |
| 192 c.pp=pp; | |
| 193 c.p=p; | |
| 194 c.inf=inf; | |
| 195 c.slen=len; | |
| 196 c.tag=Ptag; | |
| 197 c.xclass=Pclass; | |
| 198 c.max=(length == 0)?0:(p+length); | |
| 199 if (!asn1_collate_primitive(ret,&c)) | |
| 200 goto err; | |
| 201 else | |
| 202 { | |
| 203 p=c.p; | |
| 204 } | |
| 205 } | |
| 206 else | |
| 207 { | |
| 208 if (len != 0) | |
| 209 { | |
| 210 if ((ret->length < len) || (ret->data == NULL)) | |
| 211 { | |
| 212 if (ret->data != NULL) OPENSSL_free(ret->data); | |
| 213 s=(unsigned char *)OPENSSL_malloc((int)len + 1); | |
| 214 if (s == NULL) | |
| 215 { | |
| 216 i=ERR_R_MALLOC_FAILURE; | |
| 217 goto err; | |
| 218 } | |
| 219 } | |
| 220 else | |
| 221 s=ret->data; | |
| 222 memcpy(s,p,(int)len); | |
| 223 s[len] = '\0'; | |
| 224 p+=len; | |
| 225 } | |
| 226 else | |
| 227 { | |
| 228 s=NULL; | |
| 229 if (ret->data != NULL) OPENSSL_free(ret->data); | |
| 230 } | |
| 231 | |
| 232 ret->length=(int)len; | |
| 233 ret->data=s; | |
| 234 ret->type=Ptag; | |
| 235 } | |
| 236 | |
| 237 if (a != NULL) (*a)=ret; | |
| 238 *pp=p; | |
| 239 return(ret); | |
| 240 err: | |
| 241 if ((ret != NULL) && ((a == NULL) || (*a != ret))) | |
| 242 ASN1_STRING_free(ret); | |
| 243 ASN1err(ASN1_F_D2I_ASN1_BYTES,i); | |
| 244 return(NULL); | |
| 245 } | |
| 246 | |
| 247 | |
| 248 /* We are about to parse 0..n d2i_ASN1_bytes objects, we are to collapse | |
| 249 * them into the one structure that is then returned */ | |
| 250 /* There have been a few bug fixes for this function from | |
| 251 * Paul Keogh <paul.keogh@sse.ie>, many thanks to him */ | |
| 252 static int asn1_collate_primitive(ASN1_STRING *a, ASN1_const_CTX *c) | |
| 253 { | |
| 254 ASN1_STRING *os=NULL; | |
| 255 BUF_MEM b; | |
| 256 int num; | |
| 257 | |
| 258 b.length=0; | |
| 259 b.max=0; | |
| 260 b.data=NULL; | |
| 261 | |
| 262 if (a == NULL) | |
| 263 { | |
| 264 c->error=ERR_R_PASSED_NULL_PARAMETER; | |
| 265 goto err; | |
| 266 } | |
| 267 | |
| 268 num=0; | |
| 269 for (;;) | |
| 270 { | |
| 271 if (c->inf & 1) | |
| 272 { | |
| 273 c->eos=ASN1_const_check_infinite_end(&c->p, | |
| 274 (long)(c->max-c->p)); | |
| 275 if (c->eos) break; | |
| 276 } | |
| 277 else | |
| 278 { | |
| 279 if (c->slen <= 0) break; | |
| 280 } | |
| 281 | |
| 282 c->q=c->p; | |
| 283 if (d2i_ASN1_bytes(&os,&c->p,c->max-c->p,c->tag,c->xclass) | |
| 284 == NULL) | |
| 285 { | |
| 286 c->error=ERR_R_ASN1_LIB; | |
| 287 goto err; | |
| 288 } | |
| 289 | |
| 290 if (!BUF_MEM_grow_clean(&b,num+os->length)) | |
| 291 { | |
| 292 c->error=ERR_R_BUF_LIB; | |
| 293 goto err; | |
| 294 } | |
| 295 memcpy(&(b.data[num]),os->data,os->length); | |
| 296 if (!(c->inf & 1)) | |
| 297 c->slen-=(c->p-c->q); | |
| 298 num+=os->length; | |
| 299 } | |
| 300 | |
| 301 if (!asn1_const_Finish(c)) goto err; | |
| 302 | |
| 303 a->length=num; | |
| 304 if (a->data != NULL) OPENSSL_free(a->data); | |
| 305 a->data=(unsigned char *)b.data; | |
| 306 if (os != NULL) ASN1_STRING_free(os); | |
| 307 return(1); | |
| 308 err: | |
| 309 ASN1err(ASN1_F_ASN1_COLLATE_PRIMITIVE,c->error); | |
| 310 if (os != NULL) ASN1_STRING_free(os); | |
| 311 if (b.data != NULL) OPENSSL_free(b.data); | |
| 312 return(0); | |
| 313 } | |
| 314 | |
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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