1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include "internal/cryptlib.h"
12#include <openssl/bn.h>
13#include <openssl/evp.h>
14#include <openssl/asn1.h>
15#include <openssl/asn1t.h>
16#include <openssl/x509.h>
17#include "crypto/x509.h"
18#include <openssl/objects.h>
19#include <openssl/buffer.h>
20#include <openssl/pem.h>
21
22X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
23{
24 X509_REQ *ret;
25 X509_REQ_INFO *ri;
26 int i;
27 EVP_PKEY *pktmp;
28
29 ret = X509_REQ_new();
30 if (ret == NULL) {
31 X509err(X509_F_X509_TO_X509_REQ, ERR_R_MALLOC_FAILURE);
32 goto err;
33 }
34
35 ri = &ret->req_info;
36
37 ri->version->length = 1;
38 ri->version->data = OPENSSL_malloc(1);
39 if (ri->version->data == NULL)
40 goto err;
41 ri->version->data[0] = 0; /* version == 0 */
42
43 if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
44 goto err;
45
46 pktmp = X509_get0_pubkey(x);
47 if (pktmp == NULL)
48 goto err;
49 i = X509_REQ_set_pubkey(ret, pktmp);
50 if (!i)
51 goto err;
52
53 if (pkey != NULL) {
54 if (!X509_REQ_sign(ret, pkey, md))
55 goto err;
56 }
57 return ret;
58 err:
59 X509_REQ_free(ret);
60 return NULL;
61}
62
63EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
64{
65 if (req == NULL)
66 return NULL;
67 return X509_PUBKEY_get(req->req_info.pubkey);
68}
69
70EVP_PKEY *X509_REQ_get0_pubkey(X509_REQ *req)
71{
72 if (req == NULL)
73 return NULL;
74 return X509_PUBKEY_get0(req->req_info.pubkey);
75}
76
77X509_PUBKEY *X509_REQ_get_X509_PUBKEY(X509_REQ *req)
78{
79 return req->req_info.pubkey;
80}
81
82int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
83{
84 EVP_PKEY *xk = NULL;
85 int ok = 0;
86
87 xk = X509_REQ_get_pubkey(x);
88 switch (EVP_PKEY_cmp(xk, k)) {
89 case 1:
90 ok = 1;
91 break;
92 case 0:
93 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
94 X509_R_KEY_VALUES_MISMATCH);
95 break;
96 case -1:
97 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH);
98 break;
99 case -2:
100#ifndef OPENSSL_NO_EC
101 if (EVP_PKEY_id(k) == EVP_PKEY_EC) {
102 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
103 break;
104 }
105#endif
106#ifndef OPENSSL_NO_DH
107 if (EVP_PKEY_id(k) == EVP_PKEY_DH) {
108 /* No idea */
109 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
110 X509_R_CANT_CHECK_DH_KEY);
111 break;
112 }
113#endif
114 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE);
115 }
116
117 EVP_PKEY_free(xk);
118 return ok;
119}
120
121/*
122 * It seems several organisations had the same idea of including a list of
123 * extensions in a certificate request. There are at least two OIDs that are
124 * used and there may be more: so the list is configurable.
125 */
126
127static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };
128
129static int *ext_nids = ext_nid_list;
130
131int X509_REQ_extension_nid(int req_nid)
132{
133 int i, nid;
134 for (i = 0;; i++) {
135 nid = ext_nids[i];
136 if (nid == NID_undef)
137 return 0;
138 else if (req_nid == nid)
139 return 1;
140 }
141}
142
143int *X509_REQ_get_extension_nids(void)
144{
145 return ext_nids;
146}
147
148void X509_REQ_set_extension_nids(int *nids)
149{
150 ext_nids = nids;
151}
152
153STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
154{
155 X509_ATTRIBUTE *attr;
156 ASN1_TYPE *ext = NULL;
157 int idx, *pnid;
158 const unsigned char *p;
159
160 if ((req == NULL) || !ext_nids)
161 return NULL;
162 for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
163 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
164 if (idx == -1)
165 continue;
166 attr = X509_REQ_get_attr(req, idx);
167 ext = X509_ATTRIBUTE_get0_type(attr, 0);
168 break;
169 }
170 if (!ext || (ext->type != V_ASN1_SEQUENCE))
171 return NULL;
172 p = ext->value.sequence->data;
173 return (STACK_OF(X509_EXTENSION) *)
174 ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
175 ASN1_ITEM_rptr(X509_EXTENSIONS));
176}
177
178/*
179 * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
180 * in case we want to create a non standard one.
181 */
182
183int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
184 int nid)
185{
186 int extlen;
187 int rv = 0;
188 unsigned char *ext = NULL;
189 /* Generate encoding of extensions */
190 extlen = ASN1_item_i2d((ASN1_VALUE *)exts, &ext,
191 ASN1_ITEM_rptr(X509_EXTENSIONS));
192 if (extlen <= 0)
193 return 0;
194 rv = X509_REQ_add1_attr_by_NID(req, nid, V_ASN1_SEQUENCE, ext, extlen);
195 OPENSSL_free(ext);
196 return rv;
197}
198
199/* This is the normal usage: use the "official" OID */
200int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
201{
202 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
203}
204
205/* Request attribute functions */
206
207int X509_REQ_get_attr_count(const X509_REQ *req)
208{
209 return X509at_get_attr_count(req->req_info.attributes);
210}
211
212int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
213{
214 return X509at_get_attr_by_NID(req->req_info.attributes, nid, lastpos);
215}
216
217int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, const ASN1_OBJECT *obj,
218 int lastpos)
219{
220 return X509at_get_attr_by_OBJ(req->req_info.attributes, obj, lastpos);
221}
222
223X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
224{
225 return X509at_get_attr(req->req_info.attributes, loc);
226}
227
228X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
229{
230 return X509at_delete_attr(req->req_info.attributes, loc);
231}
232
233int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
234{
235 if (X509at_add1_attr(&req->req_info.attributes, attr))
236 return 1;
237 return 0;
238}
239
240int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
241 const ASN1_OBJECT *obj, int type,
242 const unsigned char *bytes, int len)
243{
244 if (X509at_add1_attr_by_OBJ(&req->req_info.attributes, obj,
245 type, bytes, len))
246 return 1;
247 return 0;
248}
249
250int X509_REQ_add1_attr_by_NID(X509_REQ *req,
251 int nid, int type,
252 const unsigned char *bytes, int len)
253{
254 if (X509at_add1_attr_by_NID(&req->req_info.attributes, nid,
255 type, bytes, len))
256 return 1;
257 return 0;
258}
259
260int X509_REQ_add1_attr_by_txt(X509_REQ *req,
261 const char *attrname, int type,
262 const unsigned char *bytes, int len)
263{
264 if (X509at_add1_attr_by_txt(&req->req_info.attributes, attrname,
265 type, bytes, len))
266 return 1;
267 return 0;
268}
269
270long X509_REQ_get_version(const X509_REQ *req)
271{
272 return ASN1_INTEGER_get(req->req_info.version);
273}
274
275X509_NAME *X509_REQ_get_subject_name(const X509_REQ *req)
276{
277 return req->req_info.subject;
278}
279
280void X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig,
281 const X509_ALGOR **palg)
282{
283 if (psig != NULL)
284 *psig = req->signature;
285 if (palg != NULL)
286 *palg = &req->sig_alg;
287}
288
289int X509_REQ_get_signature_nid(const X509_REQ *req)
290{
291 return OBJ_obj2nid(req->sig_alg.algorithm);
292}
293
294int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp)
295{
296 req->req_info.enc.modified = 1;
297 return i2d_X509_REQ_INFO(&req->req_info, pp);
298}
299