1 /* crypto/asn1/x_name.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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/asn1t.h> 62 #include <openssl/x509.h> 63 64 static int x509_name_ex_d2i(ASN1_VALUE **val, const unsigned char **in, long len, const ASN1_ITEM *it, 65 int tag, int aclass, char opt, ASN1_TLC *ctx); 66 67 static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass); 68 static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it); 69 static void x509_name_ex_free(ASN1_VALUE **val, const ASN1_ITEM *it); 70 71 static int x509_name_encode(X509_NAME *a); 72 73 ASN1_SEQUENCE(X509_NAME_ENTRY) = { 74 ASN1_SIMPLE(X509_NAME_ENTRY, object, ASN1_OBJECT), 75 ASN1_SIMPLE(X509_NAME_ENTRY, value, ASN1_PRINTABLE) 76 } ASN1_SEQUENCE_END(X509_NAME_ENTRY) 77 78 IMPLEMENT_ASN1_FUNCTIONS(X509_NAME_ENTRY) 79 IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME_ENTRY) 80 81 /* For the "Name" type we need a SEQUENCE OF { SET OF X509_NAME_ENTRY } 82 * so declare two template wrappers for this 83 */ 84 85 ASN1_ITEM_TEMPLATE(X509_NAME_ENTRIES) = 86 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, RDNS, X509_NAME_ENTRY) 87 ASN1_ITEM_TEMPLATE_END(X509_NAME_ENTRIES) 88 89 ASN1_ITEM_TEMPLATE(X509_NAME_INTERNAL) = 90 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Name, X509_NAME_ENTRIES) 91 ASN1_ITEM_TEMPLATE_END(X509_NAME_INTERNAL) 92 93 /* Normally that's where it would end: we'd have two nested STACK structures 94 * representing the ASN1. Unfortunately X509_NAME uses a completely different 95 * form and caches encodings so we have to process the internal form and convert 96 * to the external form. 97 */ 98 99 const ASN1_EXTERN_FUNCS x509_name_ff = { 100 NULL, 101 x509_name_ex_new, 102 x509_name_ex_free, 103 0, /* Default clear behaviour is OK */ 104 x509_name_ex_d2i, 105 x509_name_ex_i2d 106 }; 107 108 IMPLEMENT_EXTERN_ASN1(X509_NAME, V_ASN1_SEQUENCE, x509_name_ff) 109 110 IMPLEMENT_ASN1_FUNCTIONS(X509_NAME) 111 IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME) 112 113 static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it) 114 { 115 X509_NAME *ret = NULL; 116 ret = OPENSSL_malloc(sizeof(X509_NAME)); 117 if(!ret) goto memerr; 118 if ((ret->entries=sk_X509_NAME_ENTRY_new_null()) == NULL) 119 goto memerr; 120 if((ret->bytes = BUF_MEM_new()) == NULL) goto memerr; 121 ret->modified=1; 122 *val = (ASN1_VALUE *)ret; 123 return 1; 124 125 memerr: 126 ASN1err(ASN1_F_X509_NAME_EX_NEW, ERR_R_MALLOC_FAILURE); 127 if (ret) 128 { 129 if (ret->entries) 130 sk_X509_NAME_ENTRY_free(ret->entries); 131 OPENSSL_free(ret); 132 } 133 return 0; 134 } 135 136 static void x509_name_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it) 137 { 138 X509_NAME *a; 139 if(!pval || !*pval) 140 return; 141 a = (X509_NAME *)*pval; 142 143 BUF_MEM_free(a->bytes); 144 sk_X509_NAME_ENTRY_pop_free(a->entries,X509_NAME_ENTRY_free); 145 OPENSSL_free(a); 146 *pval = NULL; 147 } 148 149 /* Used with sk_pop_free() to free up the internal representation. 150 * NB: we only free the STACK and not its contents because it is 151 * already present in the X509_NAME structure. 152 */ 153 154 static void sk_internal_free(void *a) 155 { 156 sk_free(a); 157 } 158 159 static int x509_name_ex_d2i(ASN1_VALUE **val, const unsigned char **in, long len, const ASN1_ITEM *it, 160 int tag, int aclass, char opt, ASN1_TLC *ctx) 161 { 162 const unsigned char *p = *in, *q; 163 union { STACK *s; ASN1_VALUE *a; } intname = {NULL}; 164 union { X509_NAME *x; ASN1_VALUE *a; } nm = {NULL}; 165 int i, j, ret; 166 STACK_OF(X509_NAME_ENTRY) *entries; 167 X509_NAME_ENTRY *entry; 168 q = p; 169 170 /* Get internal representation of Name */ 171 ret = ASN1_item_ex_d2i(&intname.a, 172 &p, len, ASN1_ITEM_rptr(X509_NAME_INTERNAL), 173 tag, aclass, opt, ctx); 174 175 if(ret <= 0) return ret; 176 177 if(*val) x509_name_ex_free(val, NULL); 178 if(!x509_name_ex_new(&nm.a, NULL)) goto err; 179 /* We've decoded it: now cache encoding */ 180 if(!BUF_MEM_grow(nm.x->bytes, p - q)) goto err; 181 memcpy(nm.x->bytes->data, q, p - q); 182 183 /* Convert internal representation to X509_NAME structure */ 184 for(i = 0; i < sk_num(intname.s); i++) { 185 entries = (STACK_OF(X509_NAME_ENTRY) *)sk_value(intname.s, i); 186 for(j = 0; j < sk_X509_NAME_ENTRY_num(entries); j++) { 187 entry = sk_X509_NAME_ENTRY_value(entries, j); 188 entry->set = i; 189 if(!sk_X509_NAME_ENTRY_push(nm.x->entries, entry)) 190 goto err; 191 } 192 sk_X509_NAME_ENTRY_free(entries); 193 } 194 sk_free(intname.s); 195 nm.x->modified = 0; 196 *val = nm.a; 197 *in = p; 198 return ret; 199 err: 200 ASN1err(ASN1_F_X509_NAME_EX_D2I, ERR_R_NESTED_ASN1_ERROR); 201 return 0; 202 } 203 204 static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass) 205 { 206 int ret; 207 X509_NAME *a = (X509_NAME *)*val; 208 if(a->modified) { 209 ret = x509_name_encode((X509_NAME *)a); 210 if(ret < 0) return ret; 211 } 212 ret = a->bytes->length; 213 if(out != NULL) { 214 memcpy(*out,a->bytes->data,ret); 215 *out+=ret; 216 } 217 return ret; 218 } 219 220 static int x509_name_encode(X509_NAME *a) 221 { 222 union { STACK *s; ASN1_VALUE *a; } intname = {NULL}; 223 int len; 224 unsigned char *p; 225 STACK_OF(X509_NAME_ENTRY) *entries = NULL; 226 X509_NAME_ENTRY *entry; 227 int i, set = -1; 228 intname.s = sk_new_null(); 229 if(!intname.s) goto memerr; 230 for(i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) { 231 entry = sk_X509_NAME_ENTRY_value(a->entries, i); 232 if(entry->set != set) { 233 entries = sk_X509_NAME_ENTRY_new_null(); 234 if(!entries) goto memerr; 235 if(!sk_push(intname.s, (char *)entries)) goto memerr; 236 set = entry->set; 237 } 238 if(!sk_X509_NAME_ENTRY_push(entries, entry)) goto memerr; 239 } 240 len = ASN1_item_ex_i2d(&intname.a, NULL, 241 ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1); 242 if (!BUF_MEM_grow(a->bytes,len)) goto memerr; 243 p=(unsigned char *)a->bytes->data; 244 ASN1_item_ex_i2d(&intname.a, 245 &p, ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1); 246 sk_pop_free(intname.s, sk_internal_free); 247 a->modified = 0; 248 return len; 249 memerr: 250 sk_pop_free(intname.s, sk_internal_free); 251 ASN1err(ASN1_F_X509_NAME_ENCODE, ERR_R_MALLOC_FAILURE); 252 return -1; 253 } 254 255 256 int X509_NAME_set(X509_NAME **xn, X509_NAME *name) 257 { 258 X509_NAME *in; 259 260 if (!xn || !name) return(0); 261 262 if (*xn != name) 263 { 264 in=X509_NAME_dup(name); 265 if (in != NULL) 266 { 267 X509_NAME_free(*xn); 268 *xn=in; 269 } 270 } 271 return(*xn != NULL); 272 } 273 274 IMPLEMENT_STACK_OF(X509_NAME_ENTRY) 275 IMPLEMENT_ASN1_SET_OF(X509_NAME_ENTRY) 276
