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 69X509_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 *)OPENSSL_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); 104err: 105 X509_REQ_free(ret); 106 return(NULL); 107 } 108 109EVP_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 121static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef}; 122 123static int *ext_nids = ext_nid_list; 124 125int 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 135int *X509_REQ_get_extension_nids(void) 136{ 137 return ext_nids; 138} 139 140void X509_REQ_set_extension_nids(int *nids) 141{ 142 ext_nids = nids; 143} 144 145STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req) 146 { 147 X509_ATTRIBUTE *attr; 148 ASN1_TYPE *ext = NULL; 149 int idx, *pnid; 150 unsigned char *p; 151 152 if ((req == NULL) || (req->req_info == NULL) || !ext_nids) 153 return(NULL); 154 for (pnid = ext_nids; *pnid != NID_undef; pnid++) 155 { 156 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1); 157 if (idx == -1) 158 continue; 159 attr = X509_REQ_get_attr(req, idx); 160 if(attr->single) ext = attr->value.single; 161 else if(sk_ASN1_TYPE_num(attr->value.set)) 162 ext = sk_ASN1_TYPE_value(attr->value.set, 0); 163 break; 164 } 165 if(!ext || (ext->type != V_ASN1_SEQUENCE)) 166 return NULL; 167 p = ext->value.sequence->data; 168 return d2i_ASN1_SET_OF_X509_EXTENSION(NULL, &p, 169 ext->value.sequence->length, 170 d2i_X509_EXTENSION, X509_EXTENSION_free, 171 V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL); 172 } 173 174/* Add a STACK_OF extensions to a certificate request: allow alternative OIDs 175 * in case we want to create a non standard one. 176 */ 177 178int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts, 179 int nid) 180{ 181 unsigned char *p = NULL, *q; 182 long len; 183 ASN1_TYPE *at = NULL; 184 X509_ATTRIBUTE *attr = NULL; 185 if(!(at = ASN1_TYPE_new()) || 186 !(at->value.sequence = ASN1_STRING_new())) goto err; 187 188 at->type = V_ASN1_SEQUENCE; 189 /* Generate encoding of extensions */ 190 len = i2d_ASN1_SET_OF_X509_EXTENSION(exts, NULL, i2d_X509_EXTENSION, 191 V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, IS_SEQUENCE); 192 if(!(p = OPENSSL_malloc(len))) goto err; 193 q = p; 194 i2d_ASN1_SET_OF_X509_EXTENSION(exts, &q, i2d_X509_EXTENSION, 195 V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, IS_SEQUENCE); 196 at->value.sequence->data = p; 197 p = NULL; 198 at->value.sequence->length = len; 199 if(!(attr = X509_ATTRIBUTE_new())) goto err; 200 if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err; 201 if(!sk_ASN1_TYPE_push(attr->value.set, at)) goto err; 202 at = NULL; 203 attr->single = 0; 204 attr->object = OBJ_nid2obj(nid); 205 if(!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) goto err; 206 return 1; 207 err: 208 if(p) OPENSSL_free(p); 209 X509_ATTRIBUTE_free(attr); 210 ASN1_TYPE_free(at); 211 return 0; 212} 213/* This is the normal usage: use the "official" OID */ 214int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts) 215{ 216 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req); 217} 218 219/* Request attribute functions */ 220 221int X509_REQ_get_attr_count(const X509_REQ *req) 222{ 223 return X509at_get_attr_count(req->req_info->attributes); 224} 225 226int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, 227 int lastpos) 228{ 229 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos); 230} 231 232int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj, 233 int lastpos) 234{ 235 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos); 236} 237 238X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc) 239{ 240 return X509at_get_attr(req->req_info->attributes, loc); 241} 242 243X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc) 244{ 245 return X509at_delete_attr(req->req_info->attributes, loc); 246} 247 248int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr) 249{ 250 if(X509at_add1_attr(&req->req_info->attributes, attr)) return 1; 251 return 0; 252} 253 254int X509_REQ_add1_attr_by_OBJ(X509_REQ *req, 255 const ASN1_OBJECT *obj, int type, 256 const unsigned char *bytes, int len) 257{ 258 if(X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj, 259 type, bytes, len)) return 1; 260 return 0; 261} 262 263int X509_REQ_add1_attr_by_NID(X509_REQ *req, 264 int nid, int type, 265 const unsigned char *bytes, int len) 266{ 267 if(X509at_add1_attr_by_NID(&req->req_info->attributes, nid, 268 type, bytes, len)) return 1; 269 return 0; 270} 271 272int X509_REQ_add1_attr_by_txt(X509_REQ *req, 273 const char *attrname, int type, 274 const unsigned char *bytes, int len) 275{ 276 if(X509at_add1_attr_by_txt(&req->req_info->attributes, attrname, 277 type, bytes, len)) return 1; 278 return 0; 279} 280