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/x509.h>
  65 #include <openssl/objects.h>
  66 #include <openssl/buffer.h>
  67 #include <openssl/pem.h>
  68
  69 X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
  70         {
  71         X509_REQ *ret;
  72         X509_REQ_INFO *ri;
  73         int i;
  74         EVP_PKEY *pktmp;
  75
  76         ret=X509_REQ_new();
  77         if (ret == NULL)
  78                 {
  79                 X509err(X509_F_X509_TO_X509_REQ,ERR_R_MALLOC_FAILURE);
  80                 goto err;
  81                 }
  82
  83         ri=ret->req_info;
  84
  85         ri->version->length=1;
  86         ri->version->data=(unsigned char *)Malloc(1);
  87         if (ri->version->data == NULL) goto err;
  88         ri->version->data[0]=0; /* version == 0 */
  89
  90         if (!X509_REQ_set_subject_name(ret,X509_get_subject_name(x)))
  91                 goto err;
  92
  93         pktmp = X509_get_pubkey(x);
  94         i=X509_REQ_set_pubkey(ret,pktmp);
  95         EVP_PKEY_free(pktmp);
  96         if (!i) goto err;
  97
  98         if (pkey != NULL)
  99                 {
 100                 if (!X509_REQ_sign(ret,pkey,md))
 101                         goto err;
 102                 }
 103         return(ret);
 104 err:
 105         X509_REQ_free(ret);
 106         return(NULL);
 107         }
 108
 109 EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
 110         {
 111         if ((req == NULL) || (req->req_info == NULL))
 112                 return(NULL);
 113         return(X509_PUBKEY_get(req->req_info->pubkey));
 114         }
 115
 116 /* It seems several organisations had the same idea of including a list of
 117  * extensions in a certificate request. There are at least two OIDs that are
 118  * used and there may be more: so the list is configurable.
 119  */
 120
 121 static int ext_nid_list[] = { NID_ms_ext_req, NID_ext_req, NID_undef};
 122
 123 static int *ext_nids = ext_nid_list;
 124
 125 int X509_REQ_extension_nid(int req_nid)
 126 {
 127         int i, nid;
 128         for(i = 0; ; i++) {
 129                 nid = ext_nids[i];
 130                 if(nid == NID_undef) return 0;
 131                 else if (req_nid == nid) return 1;
 132         }
 133 }
 134
 135 int *X509_REQ_get_extension_nids(void)
 136 {
 137         return ext_nids;
 138 }
 139
 140 void X509_REQ_set_extension_nids(int *nids)
 141 {
 142         ext_nids = nids;
 143 }
 144
 145 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
 146 {
 147         X509_ATTRIBUTE *attr;
 148         STACK_OF(X509_ATTRIBUTE) *sk;
 149         ASN1_TYPE *ext = NULL;
 150         int i;
 151         unsigned char *p;
 152         if ((req == NULL) || (req->req_info == NULL))
 153                 return(NULL);
 154         sk=req->req_info->attributes;
 155         if (!sk) return NULL;
 156         for(i = 0; i < sk_X509_ATTRIBUTE_num(sk); i++) {
 157                 attr = sk_X509_ATTRIBUTE_value(sk, i);
 158                 if(X509_REQ_extension_nid(OBJ_obj2nid(attr->object))) {
 159                         if(attr->set && sk_ASN1_TYPE_num(attr->value.set))
 160                                 ext = sk_ASN1_TYPE_value(attr->value.set, 0);
 161                         else ext = attr->value.single;
 162                         break;
 163                 }
 164         }
 165         if(!ext || (ext->type != V_ASN1_SEQUENCE)) return NULL;
 166         p = ext->value.sequence->data;
 167         return d2i_ASN1_SET_OF_X509_EXTENSION(NULL, &p,
 168                         ext->value.sequence->length,
 169                         d2i_X509_EXTENSION, X509_EXTENSION_free,
 170                         V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL);
 171 }
 172
 173 /* Add a STACK_OF extensions to a certificate request: allow alternative OIDs
 174  * in case we want to create a non standard one.
 175  */
 176
 177 int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
 178                                 int nid)
 179 {
 180         unsigned char *p = NULL, *q;
 181         long len;
 182         ASN1_TYPE *at = NULL;
 183         X509_ATTRIBUTE *attr = NULL;
 184         if(!(at = ASN1_TYPE_new()) ||
 185                 !(at->value.sequence = ASN1_STRING_new())) goto err;
 186
 187         at->type = V_ASN1_SEQUENCE;
 188         /* Generate encoding of extensions */
 189         len = i2d_ASN1_SET_OF_X509_EXTENSION(exts, NULL, i2d_X509_EXTENSION,
 190                         V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, IS_SEQUENCE);
 191         if(!(p = Malloc(len))) goto err;
 192         q = p;
 193         i2d_ASN1_SET_OF_X509_EXTENSION(exts, &q, i2d_X509_EXTENSION,
 194                         V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, IS_SEQUENCE);
 195         at->value.sequence->data = p;
 196         p = NULL;
 197         at->value.sequence->length = len;
 198         if(!(attr = X509_ATTRIBUTE_new())) goto err;
 199         if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err;
 200         if(!sk_ASN1_TYPE_push(attr->value.set, at)) goto err;
 201         at = NULL;
 202         attr->set = 1;
 203         attr->object = OBJ_nid2obj(nid);
 204         if(!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) goto err;
 205         return 1;
 206         err:
 207         if(p) Free(p);
 208         X509_ATTRIBUTE_free(attr);
 209         ASN1_TYPE_free(at);
 210         return 0;
 211 }
 212 /* This is the normal usage: use the "official" OID */
 213 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
 214 {
 215         return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
 216 }
 217
 218 /* Request attribute functions */
 219
 220 int X509_REQ_get_attr_count(const X509_REQ *req)
 221 {
 222         return X509at_get_attr_count(req->req_info->attributes);
 223 }
 224
 225 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid,
 226                           int lastpos)
 227 {
 228         return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
 229 }
 230
 231 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
 232                           int lastpos)
 233 {
 234         return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
 235 }
 236
 237 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
 238 {
 239         return X509at_get_attr(req->req_info->attributes, loc);
 240 }
 241
 242 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
 243 {
 244         return X509at_delete_attr(req->req_info->attributes, loc);
 245 }
 246
 247 int X509_REQ_radd_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
 248 {
 249         if(X509at_radd_attr(&req->req_info->attributes, attr)) return 1;
 250         return 0;
 251 }
 252
 253 int X509_REQ_radd_attr_by_OBJ(X509_REQ *req,
 254                         ASN1_OBJECT *obj, int type,
 255                         unsigned char *bytes, int len)
 256 {
 257         if(X509at_radd_attr_by_OBJ(&req->req_info->attributes, obj,
 258                                 type, bytes, len)) return 1;
 259         return 0;
 260 }
 261
 262 int X509_REQ_radd_attr_by_NID(X509_REQ *req,
 263                         int nid, int type,
 264                         unsigned char *bytes, int len)
 265 {
 266         if(X509at_radd_attr_by_NID(&req->req_info->attributes, nid,
 267                                 type, bytes, len)) return 1;
 268         return 0;
 269 }
 270
 271 int X509_REQ_radd_attr_by_txt(X509_REQ *req,
 272                         char *attrname, int type,
 273                         unsigned char *bytes, int len)
 274 {
 275         if(X509at_radd_attr_by_txt(&req->req_info->attributes, attrname,
 276                                 type, bytes, len)) return 1;
 277         return 0;
 278 }