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diff --git a/src/lib/libcrypto/x509v3/v3_purp.c b/src/lib/libcrypto/x509v3/v3_purp.c
deleted file mode 100644
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1/* v3_purp.c */
2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 1999.
4 */
5/* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <stdio.h>
60#include "cryptlib.h"
61#include <openssl/x509v3.h>
62
63
64static void x509v3_cache_extensions(X509 *x);
65
66static int ca_check(X509 *x);
67static int check_purpose_ssl_client(X509_PURPOSE *xp, X509 *x, int ca);
68static int check_purpose_ssl_server(X509_PURPOSE *xp, X509 *x, int ca);
69static int check_purpose_ns_ssl_server(X509_PURPOSE *xp, X509 *x, int ca);
70static int purpose_smime(X509 *x, int ca);
71static int check_purpose_smime_sign(X509_PURPOSE *xp, X509 *x, int ca);
72static int check_purpose_smime_encrypt(X509_PURPOSE *xp, X509 *x, int ca);
73static int check_purpose_crl_sign(X509_PURPOSE *xp, X509 *x, int ca);
74static int no_check(X509_PURPOSE *xp, X509 *x, int ca);
75
76static int xp_cmp(X509_PURPOSE **a, X509_PURPOSE **b);
77static void xptable_free(X509_PURPOSE *p);
78
79static X509_PURPOSE xstandard[] = {
80 {X509_PURPOSE_SSL_CLIENT, X509_TRUST_SSL_CLIENT, 0, check_purpose_ssl_client, "SSL client", "sslclient", NULL},
81 {X509_PURPOSE_SSL_SERVER, X509_TRUST_SSL_SERVER, 0, check_purpose_ssl_server, "SSL server", "sslserver", NULL},
82 {X509_PURPOSE_NS_SSL_SERVER, X509_TRUST_SSL_SERVER, 0, check_purpose_ns_ssl_server, "Netscape SSL server", "nssslserver", NULL},
83 {X509_PURPOSE_SMIME_SIGN, X509_TRUST_EMAIL, 0, check_purpose_smime_sign, "S/MIME signing", "smimesign", NULL},
84 {X509_PURPOSE_SMIME_ENCRYPT, X509_TRUST_EMAIL, 0, check_purpose_smime_encrypt, "S/MIME encryption", "smimeencrypt", NULL},
85 {X509_PURPOSE_CRL_SIGN, X509_TRUST_COMPAT, 0, check_purpose_crl_sign, "CRL signing", "crlsign", NULL},
86 {X509_PURPOSE_ANY, X509_TRUST_DEFAULT, 0, no_check, "Any Purpose", "any", NULL},
87};
88
89#define X509_PURPOSE_COUNT (sizeof(xstandard)/sizeof(X509_PURPOSE))
90
91IMPLEMENT_STACK_OF(X509_PURPOSE)
92
93static STACK_OF(X509_PURPOSE) *xptable = NULL;
94
95static int xp_cmp(X509_PURPOSE **a, X509_PURPOSE **b)
96{
97 return (*a)->purpose - (*b)->purpose;
98}
99
100int X509_check_purpose(X509 *x, int id, int ca)
101{
102 int idx;
103 X509_PURPOSE *pt;
104 if(!(x->ex_flags & EXFLAG_SET)) {
105 CRYPTO_w_lock(CRYPTO_LOCK_X509);
106 x509v3_cache_extensions(x);
107 CRYPTO_w_unlock(CRYPTO_LOCK_X509);
108 }
109 if(id == -1) return 1;
110 idx = X509_PURPOSE_get_by_id(id);
111 if(idx == -1) return -1;
112 pt = X509_PURPOSE_get0(idx);
113 return pt->check_purpose(pt, x, ca);
114}
115
116int X509_PURPOSE_get_count(void)
117{
118 if(!xptable) return X509_PURPOSE_COUNT;
119 return sk_X509_PURPOSE_num(xptable) + X509_PURPOSE_COUNT;
120}
121
122X509_PURPOSE * X509_PURPOSE_get0(int idx)
123{
124 if(idx < 0) return NULL;
125 if(idx < X509_PURPOSE_COUNT) return xstandard + idx;
126 return sk_X509_PURPOSE_value(xptable, idx - X509_PURPOSE_COUNT);
127}
128
129int X509_PURPOSE_get_by_sname(char *sname)
130{
131 int i;
132 X509_PURPOSE *xptmp;
133 for(i = 0; i < X509_PURPOSE_get_count(); i++) {
134 xptmp = X509_PURPOSE_get0(i);
135 if(!strcmp(xptmp->sname, sname)) return i;
136 }
137 return -1;
138}
139
140
141int X509_PURPOSE_get_by_id(int purpose)
142{
143 X509_PURPOSE tmp;
144 int idx;
145 if((purpose >= X509_PURPOSE_MIN) && (purpose <= X509_PURPOSE_MAX))
146 return purpose - X509_PURPOSE_MIN;
147 tmp.purpose = purpose;
148 if(!xptable) return -1;
149 idx = sk_X509_PURPOSE_find(xptable, &tmp);
150 if(idx == -1) return -1;
151 return idx + X509_PURPOSE_COUNT;
152}
153
154int X509_PURPOSE_add(int id, int trust, int flags,
155 int (*ck)(X509_PURPOSE *, X509 *, int),
156 char *name, char *sname, void *arg)
157{
158 int idx;
159 X509_PURPOSE *ptmp;
160 /* This is set according to what we change: application can't set it */
161 flags &= ~X509_PURPOSE_DYNAMIC;
162 /* This will always be set for application modified trust entries */
163 flags |= X509_PURPOSE_DYNAMIC_NAME;
164 /* Get existing entry if any */
165 idx = X509_PURPOSE_get_by_id(id);
166 /* Need a new entry */
167 if(idx == -1) {
168 if(!(ptmp = Malloc(sizeof(X509_PURPOSE)))) {
169 X509V3err(X509V3_F_X509_PURPOSE_ADD,ERR_R_MALLOC_FAILURE);
170 return 0;
171 }
172 ptmp->flags = X509_PURPOSE_DYNAMIC;
173 } else ptmp = X509_PURPOSE_get0(idx);
174
175 /* Free existing name if dynamic */
176 if(ptmp->flags & X509_PURPOSE_DYNAMIC_NAME) {
177 Free(ptmp->name);
178 Free(ptmp->sname);
179 }
180 /* dup supplied name */
181 ptmp->name = BUF_strdup(name);
182 ptmp->sname = BUF_strdup(sname);
183 if(!ptmp->name || !ptmp->sname) {
184 X509V3err(X509V3_F_X509_PURPOSE_ADD,ERR_R_MALLOC_FAILURE);
185 return 0;
186 }
187 /* Keep the dynamic flag of existing entry */
188 ptmp->flags &= X509_PURPOSE_DYNAMIC;
189 /* Set all other flags */
190 ptmp->flags |= flags;
191
192 ptmp->purpose = id;
193 ptmp->trust = trust;
194 ptmp->check_purpose = ck;
195 ptmp->usr_data = arg;
196
197 /* If its a new entry manage the dynamic table */
198 if(idx == -1) {
199 if(!xptable && !(xptable = sk_X509_PURPOSE_new(xp_cmp))) {
200 X509V3err(X509V3_F_X509_PURPOSE_ADD,ERR_R_MALLOC_FAILURE);
201 return 0;
202 }
203 if (!sk_X509_PURPOSE_push(xptable, ptmp)) {
204 X509V3err(X509V3_F_X509_PURPOSE_ADD,ERR_R_MALLOC_FAILURE);
205 return 0;
206 }
207 }
208 return 1;
209}
210
211static void xptable_free(X509_PURPOSE *p)
212 {
213 if(!p) return;
214 if (p->flags & X509_PURPOSE_DYNAMIC)
215 {
216 if (p->flags & X509_PURPOSE_DYNAMIC_NAME) {
217 Free(p->name);
218 Free(p->sname);
219 }
220 Free(p);
221 }
222 }
223
224void X509_PURPOSE_cleanup(void)
225{
226 int i;
227 sk_X509_PURPOSE_pop_free(xptable, xptable_free);
228 for(i = 0; i < X509_PURPOSE_COUNT; i++) xptable_free(xstandard + i);
229 xptable = NULL;
230}
231
232int X509_PURPOSE_get_id(X509_PURPOSE *xp)
233{
234 return xp->purpose;
235}
236
237char *X509_PURPOSE_get0_name(X509_PURPOSE *xp)
238{
239 return xp->name;
240}
241
242char *X509_PURPOSE_get0_sname(X509_PURPOSE *xp)
243{
244 return xp->sname;
245}
246
247int X509_PURPOSE_get_trust(X509_PURPOSE *xp)
248{
249 return xp->trust;
250}
251
252#ifndef NO_SHA
253static void x509v3_cache_extensions(X509 *x)
254{
255 BASIC_CONSTRAINTS *bs;
256 ASN1_BIT_STRING *usage;
257 ASN1_BIT_STRING *ns;
258 STACK_OF(ASN1_OBJECT) *extusage;
259 int i;
260 if(x->ex_flags & EXFLAG_SET) return;
261 X509_digest(x, EVP_sha1(), x->sha1_hash, NULL);
262 /* Does subject name match issuer ? */
263 if(!X509_NAME_cmp(X509_get_subject_name(x), X509_get_issuer_name(x)))
264 x->ex_flags |= EXFLAG_SS;
265 /* V1 should mean no extensions ... */
266 if(!X509_get_version(x)) x->ex_flags |= EXFLAG_V1;
267 /* Handle basic constraints */
268 if((bs=X509_get_ext_d2i(x, NID_basic_constraints, NULL, NULL))) {
269 if(bs->ca) x->ex_flags |= EXFLAG_CA;
270 if(bs->pathlen) {
271 if((bs->pathlen->type == V_ASN1_NEG_INTEGER)
272 || !bs->ca) {
273 x->ex_flags |= EXFLAG_INVALID;
274 x->ex_pathlen = 0;
275 } else x->ex_pathlen = ASN1_INTEGER_get(bs->pathlen);
276 } else x->ex_pathlen = -1;
277 BASIC_CONSTRAINTS_free(bs);
278 x->ex_flags |= EXFLAG_BCONS;
279 }
280 /* Handle key usage */
281 if((usage=X509_get_ext_d2i(x, NID_key_usage, NULL, NULL))) {
282 if(usage->length > 0) {
283 x->ex_kusage = usage->data[0];
284 if(usage->length > 1)
285 x->ex_kusage |= usage->data[1] << 8;
286 } else x->ex_kusage = 0;
287 x->ex_flags |= EXFLAG_KUSAGE;
288 ASN1_BIT_STRING_free(usage);
289 }
290 x->ex_xkusage = 0;
291 if((extusage=X509_get_ext_d2i(x, NID_ext_key_usage, NULL, NULL))) {
292 x->ex_flags |= EXFLAG_XKUSAGE;
293 for(i = 0; i < sk_ASN1_OBJECT_num(extusage); i++) {
294 switch(OBJ_obj2nid(sk_ASN1_OBJECT_value(extusage,i))) {
295 case NID_server_auth:
296 x->ex_xkusage |= XKU_SSL_SERVER;
297 break;
298
299 case NID_client_auth:
300 x->ex_xkusage |= XKU_SSL_CLIENT;
301 break;
302
303 case NID_email_protect:
304 x->ex_xkusage |= XKU_SMIME;
305 break;
306
307 case NID_code_sign:
308 x->ex_xkusage |= XKU_CODE_SIGN;
309 break;
310
311 case NID_ms_sgc:
312 case NID_ns_sgc:
313 x->ex_xkusage |= XKU_SGC;
314 }
315 }
316 sk_ASN1_OBJECT_pop_free(extusage, ASN1_OBJECT_free);
317 }
318
319 if((ns=X509_get_ext_d2i(x, NID_netscape_cert_type, NULL, NULL))) {
320 if(ns->length > 0) x->ex_nscert = ns->data[0];
321 else x->ex_nscert = 0;
322 x->ex_flags |= EXFLAG_NSCERT;
323 ASN1_BIT_STRING_free(ns);
324 }
325 x->ex_flags |= EXFLAG_SET;
326}
327#endif
328
329/* CA checks common to all purposes
330 * return codes:
331 * 0 not a CA
332 * 1 is a CA
333 * 2 basicConstraints absent so "maybe" a CA
334 * 3 basicConstraints absent but self signed V1.
335 */
336
337#define V1_ROOT (EXFLAG_V1|EXFLAG_SS)
338#define ku_reject(x, usage) \
339 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
340#define xku_reject(x, usage) \
341 (((x)->ex_flags & EXFLAG_XKUSAGE) && !((x)->ex_xkusage & (usage)))
342#define ns_reject(x, usage) \
343 (((x)->ex_flags & EXFLAG_NSCERT) && !((x)->ex_nscert & (usage)))
344
345static int ca_check(X509 *x)
346{
347 /* keyUsage if present should allow cert signing */
348 if(ku_reject(x, KU_KEY_CERT_SIGN)) return 0;
349 if(x->ex_flags & EXFLAG_BCONS) {
350 if(x->ex_flags & EXFLAG_CA) return 1;
351 /* If basicConstraints says not a CA then say so */
352 else return 0;
353 } else {
354 if((x->ex_flags & V1_ROOT) == V1_ROOT) return 3;
355 else return 2;
356 }
357}
358
359
360static int check_purpose_ssl_client(X509_PURPOSE *xp, X509 *x, int ca)
361{
362 if(xku_reject(x,XKU_SSL_CLIENT)) return 0;
363 if(ca) {
364 int ca_ret;
365 ca_ret = ca_check(x);
366 if(!ca_ret) return 0;
367 /* check nsCertType if present */
368 if(x->ex_flags & EXFLAG_NSCERT) {
369 if(x->ex_nscert & NS_SSL_CA) return ca_ret;
370 return 0;
371 }
372 if(ca_ret != 2) return ca_ret;
373 else return 0;
374 }
375 /* We need to do digital signatures with it */
376 if(ku_reject(x,KU_DIGITAL_SIGNATURE)) return 0;
377 /* nsCertType if present should allow SSL client use */
378 if(ns_reject(x, NS_SSL_CLIENT)) return 0;
379 return 1;
380}
381
382static int check_purpose_ssl_server(X509_PURPOSE *xp, X509 *x, int ca)
383{
384 if(xku_reject(x,XKU_SSL_SERVER|XKU_SGC)) return 0;
385 /* Otherwise same as SSL client for a CA */
386 if(ca) return check_purpose_ssl_client(xp, x, 1);
387
388 if(ns_reject(x, NS_SSL_SERVER)) return 0;
389 /* Now as for keyUsage: we'll at least need to sign OR encipher */
390 if(ku_reject(x, KU_DIGITAL_SIGNATURE|KU_KEY_ENCIPHERMENT)) return 0;
391
392 return 1;
393
394}
395
396static int check_purpose_ns_ssl_server(X509_PURPOSE *xp, X509 *x, int ca)
397{
398 int ret;
399 ret = check_purpose_ssl_server(xp, x, ca);
400 if(!ret || ca) return ret;
401 /* We need to encipher or Netscape complains */
402 if(ku_reject(x, KU_KEY_ENCIPHERMENT)) return 0;
403 return ret;
404}
405
406/* common S/MIME checks */
407static int purpose_smime(X509 *x, int ca)
408{
409 if(xku_reject(x,XKU_SMIME)) return 0;
410 if(ca) {
411 int ca_ret;
412 ca_ret = ca_check(x);
413 if(!ca_ret) return 0;
414 /* check nsCertType if present */
415 if(x->ex_flags & EXFLAG_NSCERT) {
416 if(x->ex_nscert & NS_SMIME_CA) return ca_ret;
417 return 0;
418 }
419 if(ca_ret != 2) return ca_ret;
420 else return 0;
421 }
422 if(x->ex_flags & EXFLAG_NSCERT) {
423 if(x->ex_nscert & NS_SMIME) return 1;
424 /* Workaround for some buggy certificates */
425 if(x->ex_nscert & NS_SSL_CLIENT) return 2;
426 return 0;
427 }
428 return 1;
429}
430
431static int check_purpose_smime_sign(X509_PURPOSE *xp, X509 *x, int ca)
432{
433 int ret;
434 ret = purpose_smime(x, ca);
435 if(!ret || ca) return ret;
436 if(ku_reject(x, KU_DIGITAL_SIGNATURE)) return 0;
437 return ret;
438}
439
440static int check_purpose_smime_encrypt(X509_PURPOSE *xp, X509 *x, int ca)
441{
442 int ret;
443 ret = purpose_smime(x, ca);
444 if(!ret || ca) return ret;
445 if(ku_reject(x, KU_KEY_ENCIPHERMENT)) return 0;
446 return ret;
447}
448
449static int check_purpose_crl_sign(X509_PURPOSE *xp, X509 *x, int ca)
450{
451 if(ca) {
452 int ca_ret;
453 if((ca_ret = ca_check(x)) != 2) return ca_ret;
454 else return 0;
455 }
456 if(ku_reject(x, KU_CRL_SIGN)) return 0;
457 return 1;
458}
459
460static int no_check(X509_PURPOSE *xp, X509 *x, int ca)
461{
462 return 1;
463}
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