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