crypto/x509/x509_req.c

   1 /* crypto/x509/x509_req.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/bn.h>
  62 #include <openssl/evp.h>
  63 #include <openssl/asn1.h>
  64 #include <openssl/asn1t.h>
  65 #include <openssl/x509.h>
  66 #include <openssl/objects.h>
  67 #include <openssl/buffer.h>
  68 #include <openssl/pem.h>
  69
  70 ASN1_ITEM_TEMPLATE(X509_EXTENSIONS) =
  71         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Extension, X509_EXTENSION)
  72 ASN1_ITEM_TEMPLATE_END(X509_EXTENSIONS)
  73
  74 X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
  75         {
  76         X509_REQ *ret;
  77         X509_REQ_INFO *ri;
  78         int i;
  79         EVP_PKEY *pktmp;
  80
  81         ret=X509_REQ_new();
  82         if (ret == NULL)
  83                 {
  84                 X509err(X509_F_X509_TO_X509_REQ,ERR_R_MALLOC_FAILURE);
  85                 goto err;
  86                 }
  87
  88         ri=ret->req_info;
  89
  90         ri->version->length=1;
  91         ri->version->data=(unsigned char *)OPENSSL_malloc(1);
  92         if (ri->version->data == NULL) goto err;
  93         ri->version->data[0]=0; /* version == 0 */
  94
  95         if (!X509_REQ_set_subject_name(ret,X509_get_subject_name(x)))
  96                 goto err;
  97
  98         pktmp = X509_get_pubkey(x);
  99         i=X509_REQ_set_pubkey(ret,pktmp);
 100         EVP_PKEY_free(pktmp);
 101         if (!i) goto err;
 102
 103         if (pkey != NULL)
 104                 {
 105                 if (!X509_REQ_sign(ret,pkey,md))
 106                         goto err;
 107                 }
 108         return(ret);
 109 err:
 110         X509_REQ_free(ret);
 111         return(NULL);
 112         }
 113
 114 EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
 115         {
 116         if ((req == NULL) || (req->req_info == NULL))
 117                 return(NULL);
 118         return(X509_PUBKEY_get(req->req_info->pubkey));
 119         }
 120
 121 int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
 122         {
 123         EVP_PKEY *xk=NULL;
 124         int ok=0;
 125
 126         xk=X509_REQ_get_pubkey(x);
 127         switch (EVP_PKEY_cmp(xk, k))
 128                 {
 129         case 1:
 130                 ok=1;
 131                 break;
 132         case 0:
 133                 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH);
 134                 break;
 135         case -1:
 136                 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_TYPE_MISMATCH);
 137                 break;
 138         case -2:
 139 #ifndef OPENSSL_NO_EC
 140                 if (k->type == EVP_PKEY_EC)
 141                         {
 142                         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
 143                         break;
 144                         }
 145 #endif
 146 #ifndef OPENSSL_NO_DH
 147                 if (k->type == EVP_PKEY_DH)
 148                         {
 149                         /* No idea */
 150                         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_CANT_CHECK_DH_KEY);
 151                         break;
 152                         }
 153 #endif
 154                 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_UNKNOWN_KEY_TYPE);
 155                 }
 156
 157         EVP_PKEY_free(xk);
 158         return(ok);
 159         }
 160
 161 /* It seems several organisations had the same idea of including a list of
 162  * extensions in a certificate request. There are at least two OIDs that are
 163  * used and there may be more: so the list is configurable.
 164  */
 165
 166 static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef};
 167
 168 static int *ext_nids = ext_nid_list;
 169
 170 int X509_REQ_extension_nid(int req_nid)
 171 {
 172         int i, nid;
 173         for(i = 0; ; i++) {
 174                 nid = ext_nids[i];
 175                 if(nid == NID_undef) return 0;
 176                 else if (req_nid == nid) return 1;
 177         }
 178 }
 179
 180 int *X509_REQ_get_extension_nids(void)
 181 {
 182         return ext_nids;
 183 }
 184
 185 void X509_REQ_set_extension_nids(int *nids)
 186 {
 187         ext_nids = nids;
 188 }
 189
 190 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
 191         {
 192         X509_ATTRIBUTE *attr;
 193         ASN1_TYPE *ext = NULL;
 194         int idx, *pnid;
 195         const unsigned char *p;
 196
 197         if ((req == NULL) || (req->req_info == NULL) || !ext_nids)
 198                 return(NULL);
 199         for (pnid = ext_nids; *pnid != NID_undef; pnid++)
 200                 {
 201                 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
 202                 if (idx == -1)
 203                         continue;
 204                 attr = X509_REQ_get_attr(req, idx);
 205                 if(attr->single) ext = attr->value.single;
 206                 else if(sk_ASN1_TYPE_num(attr->value.set))
 207                         ext = sk_ASN1_TYPE_value(attr->value.set, 0);
 208                 break;
 209                 }
 210         if(!ext || (ext->type != V_ASN1_SEQUENCE))
 211                 return NULL;
 212         p = ext->value.sequence->data;
 213         return (STACK_OF(X509_EXTENSION) *)
 214                 ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
 215                                 ASN1_ITEM_rptr(X509_EXTENSIONS));
 216 }
 217
 218 /* Add a STACK_OF extensions to a certificate request: allow alternative OIDs
 219  * in case we want to create a non standard one.
 220  */
 221
 222 int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
 223                                 int nid)
 224 {
 225         ASN1_TYPE *at = NULL;
 226         X509_ATTRIBUTE *attr = NULL;
 227         if(!(at = ASN1_TYPE_new()) ||
 228                 !(at->value.sequence = ASN1_STRING_new())) goto err;
 229
 230         at->type = V_ASN1_SEQUENCE;
 231         /* Generate encoding of extensions */
 232         at->value.sequence->length =
 233                         ASN1_item_i2d((ASN1_VALUE *)exts,
 234                                 &at->value.sequence->data,
 235                                 ASN1_ITEM_rptr(X509_EXTENSIONS));
 236         if(!(attr = X509_ATTRIBUTE_new())) goto err;
 237         if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err;
 238         if(!sk_ASN1_TYPE_push(attr->value.set, at)) goto err;
 239         at = NULL;
 240         attr->single = 0;
 241         attr->object = OBJ_nid2obj(nid);
 242         if (!req->req_info->attributes)
 243                 {
 244                 if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null()))
 245                         goto err;
 246                 }
 247         if(!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) goto err;
 248         return 1;
 249         err:
 250         X509_ATTRIBUTE_free(attr);
 251         ASN1_TYPE_free(at);
 252         return 0;
 253 }
 254 /* This is the normal usage: use the "official" OID */
 255 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
 256 {
 257         return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
 258 }
 259
 260 /* Request attribute functions */
 261
 262 int X509_REQ_get_attr_count(const X509_REQ *req)
 263 {
 264         return X509at_get_attr_count(req->req_info->attributes);
 265 }
 266
 267 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid,
 268                           int lastpos)
 269 {
 270         return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
 271 }
 272
 273 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
 274                           int lastpos)
 275 {
 276         return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
 277 }
 278
 279 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
 280 {
 281         return X509at_get_attr(req->req_info->attributes, loc);
 282 }
 283
 284 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
 285 {
 286         return X509at_delete_attr(req->req_info->attributes, loc);
 287 }
 288
 289 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
 290 {
 291         if(X509at_add1_attr(&req->req_info->attributes, attr)) return 1;
 292         return 0;
 293 }
 294
 295 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
 296                         const ASN1_OBJECT *obj, int type,
 297                         const unsigned char *bytes, int len)
 298 {
 299         if(X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj,
 300                                 type, bytes, len)) return 1;
 301         return 0;
 302 }
 303
 304 int X509_REQ_add1_attr_by_NID(X509_REQ *req,
 305                         int nid, int type,
 306                         const unsigned char *bytes, int len)
 307 {
 308         if(X509at_add1_attr_by_NID(&req->req_info->attributes, nid,
 309                                 type, bytes, len)) return 1;
 310         return 0;
 311 }
 312
 313 int X509_REQ_add1_attr_by_txt(X509_REQ *req,
 314                         const char *attrname, int type,
 315                         const unsigned char *bytes, int len)
 316 {
 317         if(X509at_add1_attr_by_txt(&req->req_info->attributes, attrname,
 318                                 type, bytes, len)) return 1;
 319         return 0;
 320 }