1 /*
2 * Copyright 1995-2022 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
X509_to_X509_REQ(X509 * x,EVP_PKEY * pkey,const EVP_MD * md)22 X509_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_ex(x->libctx, x->propq);
30 if (ret == NULL) {
31 ERR_raise(ERR_LIB_X509, 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
X509_REQ_get_pubkey(X509_REQ * req)63 EVP_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
X509_REQ_get0_pubkey(X509_REQ * req)70 EVP_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
X509_REQ_get_X509_PUBKEY(X509_REQ * req)77 X509_PUBKEY *X509_REQ_get_X509_PUBKEY(X509_REQ *req)
78 {
79 return req->req_info.pubkey;
80 }
81
X509_REQ_check_private_key(X509_REQ * x,EVP_PKEY * k)82 int 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_eq(xk, k)) {
89 case 1:
90 ok = 1;
91 break;
92 case 0:
93 ERR_raise(ERR_LIB_X509, X509_R_KEY_VALUES_MISMATCH);
94 break;
95 case -1:
96 ERR_raise(ERR_LIB_X509, X509_R_KEY_TYPE_MISMATCH);
97 break;
98 case -2:
99 ERR_raise(ERR_LIB_X509, X509_R_UNKNOWN_KEY_TYPE);
100 }
101
102 EVP_PKEY_free(xk);
103 return ok;
104 }
105
106 /*
107 * It seems several organisations had the same idea of including a list of
108 * extensions in a certificate request. There are at least two OIDs that are
109 * used and there may be more: so the list is configurable.
110 */
111
112 static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };
113
114 static int *ext_nids = ext_nid_list;
115
X509_REQ_extension_nid(int req_nid)116 int X509_REQ_extension_nid(int req_nid)
117 {
118 int i, nid;
119
120 for (i = 0;; i++) {
121 nid = ext_nids[i];
122 if (nid == NID_undef)
123 return 0;
124 else if (req_nid == nid)
125 return 1;
126 }
127 }
128
X509_REQ_get_extension_nids(void)129 int *X509_REQ_get_extension_nids(void)
130 {
131 return ext_nids;
132 }
133
X509_REQ_set_extension_nids(int * nids)134 void X509_REQ_set_extension_nids(int *nids)
135 {
136 ext_nids = nids;
137 }
138
STACK_OF(X509_EXTENSION)139 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
140 {
141 X509_ATTRIBUTE *attr;
142 ASN1_TYPE *ext = NULL;
143 int idx, *pnid;
144 const unsigned char *p;
145
146 if (req == NULL || !ext_nids)
147 return NULL;
148 for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
149 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
150 if (idx == -1)
151 continue;
152 attr = X509_REQ_get_attr(req, idx);
153 ext = X509_ATTRIBUTE_get0_type(attr, 0);
154 break;
155 }
156 if (ext == NULL) /* no extensions is not an error */
157 return sk_X509_EXTENSION_new_null();
158 if (ext->type != V_ASN1_SEQUENCE)
159 return NULL;
160 p = ext->value.sequence->data;
161 return (STACK_OF(X509_EXTENSION) *)
162 ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
163 ASN1_ITEM_rptr(X509_EXTENSIONS));
164 }
165
166 /*
167 * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
168 * in case we want to create a non standard one.
169 */
X509_REQ_add_extensions_nid(X509_REQ * req,const STACK_OF (X509_EXTENSION)* exts,int nid)170 int X509_REQ_add_extensions_nid(X509_REQ *req,
171 const STACK_OF(X509_EXTENSION) *exts, int nid)
172 {
173 int extlen;
174 int rv = 0;
175 unsigned char *ext = NULL;
176
177 /* Generate encoding of extensions */
178 extlen = ASN1_item_i2d((const ASN1_VALUE *)exts, &ext,
179 ASN1_ITEM_rptr(X509_EXTENSIONS));
180 if (extlen <= 0)
181 return 0;
182 rv = X509_REQ_add1_attr_by_NID(req, nid, V_ASN1_SEQUENCE, ext, extlen);
183 OPENSSL_free(ext);
184 return rv;
185 }
186
187 /* This is the normal usage: use the "official" OID */
X509_REQ_add_extensions(X509_REQ * req,const STACK_OF (X509_EXTENSION)* exts)188 int X509_REQ_add_extensions(X509_REQ *req, const STACK_OF(X509_EXTENSION) *exts)
189 {
190 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
191 }
192
193 /* Request attribute functions */
194
X509_REQ_get_attr_count(const X509_REQ * req)195 int X509_REQ_get_attr_count(const X509_REQ *req)
196 {
197 return X509at_get_attr_count(req->req_info.attributes);
198 }
199
X509_REQ_get_attr_by_NID(const X509_REQ * req,int nid,int lastpos)200 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
201 {
202 return X509at_get_attr_by_NID(req->req_info.attributes, nid, lastpos);
203 }
204
X509_REQ_get_attr_by_OBJ(const X509_REQ * req,const ASN1_OBJECT * obj,int lastpos)205 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, const ASN1_OBJECT *obj,
206 int lastpos)
207 {
208 return X509at_get_attr_by_OBJ(req->req_info.attributes, obj, lastpos);
209 }
210
X509_REQ_get_attr(const X509_REQ * req,int loc)211 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
212 {
213 return X509at_get_attr(req->req_info.attributes, loc);
214 }
215
X509_REQ_delete_attr(X509_REQ * req,int loc)216 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
217 {
218 X509_ATTRIBUTE *attr;
219
220 if (req == NULL) {
221 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
222 return 0;
223 }
224 attr = X509at_delete_attr(req->req_info.attributes, loc);
225 if (attr != NULL)
226 req->req_info.enc.modified = 1;
227 return attr;
228 }
229
X509_REQ_add1_attr(X509_REQ * req,X509_ATTRIBUTE * attr)230 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
231 {
232 if (req == NULL) {
233 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
234 return 0;
235 }
236 if (!X509at_add1_attr(&req->req_info.attributes, attr))
237 return 0;
238 req->req_info.enc.modified = 1;
239 return 1;
240 }
241
X509_REQ_add1_attr_by_OBJ(X509_REQ * req,const ASN1_OBJECT * obj,int type,const unsigned char * bytes,int len)242 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
243 const ASN1_OBJECT *obj, int type,
244 const unsigned char *bytes, int len)
245 {
246 if (req == NULL) {
247 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
248 return 0;
249 }
250 if (!X509at_add1_attr_by_OBJ(&req->req_info.attributes, obj,
251 type, bytes, len))
252 return 0;
253 req->req_info.enc.modified = 1;
254 return 1;
255 }
256
X509_REQ_add1_attr_by_NID(X509_REQ * req,int nid,int type,const unsigned char * bytes,int len)257 int X509_REQ_add1_attr_by_NID(X509_REQ *req,
258 int nid, int type,
259 const unsigned char *bytes, int len)
260 {
261 if (req == NULL) {
262 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
263 return 0;
264 }
265 if (!X509at_add1_attr_by_NID(&req->req_info.attributes, nid,
266 type, bytes, len))
267 return 0;
268 req->req_info.enc.modified = 1;
269 return 1;
270 }
271
X509_REQ_add1_attr_by_txt(X509_REQ * req,const char * attrname,int type,const unsigned char * bytes,int len)272 int 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 (req == NULL) {
277 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
278 return 0;
279 }
280 if (!X509at_add1_attr_by_txt(&req->req_info.attributes, attrname,
281 type, bytes, len))
282 return 0;
283 req->req_info.enc.modified = 1;
284 return 1;
285 }
286
X509_REQ_get_version(const X509_REQ * req)287 long X509_REQ_get_version(const X509_REQ *req)
288 {
289 return ASN1_INTEGER_get(req->req_info.version);
290 }
291
X509_REQ_get_subject_name(const X509_REQ * req)292 X509_NAME *X509_REQ_get_subject_name(const X509_REQ *req)
293 {
294 return req->req_info.subject;
295 }
296
X509_REQ_get0_signature(const X509_REQ * req,const ASN1_BIT_STRING ** psig,const X509_ALGOR ** palg)297 void X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig,
298 const X509_ALGOR **palg)
299 {
300 if (psig != NULL)
301 *psig = req->signature;
302 if (palg != NULL)
303 *palg = &req->sig_alg;
304 }
305
X509_REQ_set0_signature(X509_REQ * req,ASN1_BIT_STRING * psig)306 void X509_REQ_set0_signature(X509_REQ *req, ASN1_BIT_STRING *psig)
307 {
308 if (req->signature)
309 ASN1_BIT_STRING_free(req->signature);
310 req->signature = psig;
311 }
312
X509_REQ_set1_signature_algo(X509_REQ * req,X509_ALGOR * palg)313 int X509_REQ_set1_signature_algo(X509_REQ *req, X509_ALGOR *palg)
314 {
315 return X509_ALGOR_copy(&req->sig_alg, palg);
316 }
317
X509_REQ_get_signature_nid(const X509_REQ * req)318 int X509_REQ_get_signature_nid(const X509_REQ *req)
319 {
320 return OBJ_obj2nid(req->sig_alg.algorithm);
321 }
322
i2d_re_X509_REQ_tbs(X509_REQ * req,unsigned char ** pp)323 int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp)
324 {
325 if (req == NULL) {
326 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
327 return 0;
328 }
329 req->req_info.enc.modified = 1;
330 return i2d_X509_REQ_INFO(&req->req_info, pp);
331 }
332