]>
Commit | Line | Data |
---|---|---|
0f113f3e | 1 | /* |
ba4356ae | 2 | * Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved. |
673b102c | 3 | * |
d2e9e320 RS |
4 | * Licensed under the OpenSSL license (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 | |
673b102c DSH |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
b39fc560 | 11 | #include "internal/cryptlib.h" |
1912c5d8 | 12 | #include "internal/numbers.h" |
673b102c | 13 | #include <openssl/x509v3.h> |
2f043896 | 14 | #include <openssl/x509_vfy.h> |
0c994d54 | 15 | #include "crypto/x509.h" |
f21b5b64 | 16 | #include "internal/tsan_assist.h" |
673b102c | 17 | |
ce1b4fe1 | 18 | static void x509v3_cache_extensions(X509 *x); |
673b102c | 19 | |
ccd86b68 | 20 | static int check_ssl_ca(const X509 *x); |
0f113f3e MC |
21 | static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x, |
22 | int ca); | |
23 | static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x, | |
24 | int ca); | |
25 | static int check_purpose_ns_ssl_server(const X509_PURPOSE *xp, const X509 *x, | |
26 | int ca); | |
ccd86b68 | 27 | static int purpose_smime(const X509 *x, int ca); |
0f113f3e MC |
28 | static int check_purpose_smime_sign(const X509_PURPOSE *xp, const X509 *x, |
29 | int ca); | |
30 | static int check_purpose_smime_encrypt(const X509_PURPOSE *xp, const X509 *x, | |
31 | int ca); | |
32 | static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x, | |
33 | int ca); | |
34 | static int check_purpose_timestamp_sign(const X509_PURPOSE *xp, const X509 *x, | |
35 | int ca); | |
ccd86b68 | 36 | static int no_check(const X509_PURPOSE *xp, const X509 *x, int ca); |
81f169e9 | 37 | static int ocsp_helper(const X509_PURPOSE *xp, const X509 *x, int ca); |
ccd86b68 | 38 | |
0f113f3e | 39 | static int xp_cmp(const X509_PURPOSE *const *a, const X509_PURPOSE *const *b); |
d4cec6a1 | 40 | static void xptable_free(X509_PURPOSE *p); |
673b102c DSH |
41 | |
42 | static X509_PURPOSE xstandard[] = { | |
0f113f3e MC |
43 | {X509_PURPOSE_SSL_CLIENT, X509_TRUST_SSL_CLIENT, 0, |
44 | check_purpose_ssl_client, "SSL client", "sslclient", NULL}, | |
45 | {X509_PURPOSE_SSL_SERVER, X509_TRUST_SSL_SERVER, 0, | |
46 | check_purpose_ssl_server, "SSL server", "sslserver", NULL}, | |
47 | {X509_PURPOSE_NS_SSL_SERVER, X509_TRUST_SSL_SERVER, 0, | |
48 | check_purpose_ns_ssl_server, "Netscape SSL server", "nssslserver", NULL}, | |
49 | {X509_PURPOSE_SMIME_SIGN, X509_TRUST_EMAIL, 0, check_purpose_smime_sign, | |
50 | "S/MIME signing", "smimesign", NULL}, | |
51 | {X509_PURPOSE_SMIME_ENCRYPT, X509_TRUST_EMAIL, 0, | |
52 | check_purpose_smime_encrypt, "S/MIME encryption", "smimeencrypt", NULL}, | |
53 | {X509_PURPOSE_CRL_SIGN, X509_TRUST_COMPAT, 0, check_purpose_crl_sign, | |
54 | "CRL signing", "crlsign", NULL}, | |
55 | {X509_PURPOSE_ANY, X509_TRUST_DEFAULT, 0, no_check, "Any Purpose", "any", | |
56 | NULL}, | |
57 | {X509_PURPOSE_OCSP_HELPER, X509_TRUST_COMPAT, 0, ocsp_helper, | |
58 | "OCSP helper", "ocsphelper", NULL}, | |
59 | {X509_PURPOSE_TIMESTAMP_SIGN, X509_TRUST_TSA, 0, | |
60 | check_purpose_timestamp_sign, "Time Stamp signing", "timestampsign", | |
61 | NULL}, | |
673b102c DSH |
62 | }; |
63 | ||
b6eb9827 | 64 | #define X509_PURPOSE_COUNT OSSL_NELEM(xstandard) |
dd413410 | 65 | |
79875776 | 66 | static STACK_OF(X509_PURPOSE) *xptable = NULL; |
673b102c | 67 | |
0f113f3e | 68 | static int xp_cmp(const X509_PURPOSE *const *a, const X509_PURPOSE *const *b) |
673b102c | 69 | { |
0f113f3e | 70 | return (*a)->purpose - (*b)->purpose; |
673b102c DSH |
71 | } |
72 | ||
0f113f3e MC |
73 | /* |
74 | * As much as I'd like to make X509_check_purpose use a "const" X509* I | |
75 | * really can't because it does recalculate hashes and do other non-const | |
76 | * things. | |
77 | */ | |
673b102c DSH |
78 | int X509_check_purpose(X509 *x, int id, int ca) |
79 | { | |
0f113f3e MC |
80 | int idx; |
81 | const X509_PURPOSE *pt; | |
bc624bd9 DMSP |
82 | |
83 | x509v3_cache_extensions(x); | |
ba4356ae BE |
84 | if (x->ex_flags & EXFLAG_INVALID) |
85 | return -1; | |
bc624bd9 | 86 | |
109f8b5d | 87 | /* Return if side-effect only call */ |
0f113f3e MC |
88 | if (id == -1) |
89 | return 1; | |
90 | idx = X509_PURPOSE_get_by_id(id); | |
91 | if (idx == -1) | |
92 | return -1; | |
93 | pt = X509_PURPOSE_get0(idx); | |
94 | return pt->check_purpose(pt, x, ca); | |
673b102c | 95 | } |
e947f396 | 96 | |
926a56bf DSH |
97 | int X509_PURPOSE_set(int *p, int purpose) |
98 | { | |
0f113f3e MC |
99 | if (X509_PURPOSE_get_by_id(purpose) == -1) { |
100 | X509V3err(X509V3_F_X509_PURPOSE_SET, X509V3_R_INVALID_PURPOSE); | |
101 | return 0; | |
102 | } | |
103 | *p = purpose; | |
104 | return 1; | |
926a56bf DSH |
105 | } |
106 | ||
d4cec6a1 DSH |
107 | int X509_PURPOSE_get_count(void) |
108 | { | |
0f113f3e MC |
109 | if (!xptable) |
110 | return X509_PURPOSE_COUNT; | |
111 | return sk_X509_PURPOSE_num(xptable) + X509_PURPOSE_COUNT; | |
d4cec6a1 | 112 | } |
ce1b4fe1 | 113 | |
0f113f3e | 114 | X509_PURPOSE *X509_PURPOSE_get0(int idx) |
d4cec6a1 | 115 | { |
0f113f3e MC |
116 | if (idx < 0) |
117 | return NULL; | |
118 | if (idx < (int)X509_PURPOSE_COUNT) | |
119 | return xstandard + idx; | |
120 | return sk_X509_PURPOSE_value(xptable, idx - X509_PURPOSE_COUNT); | |
d4cec6a1 DSH |
121 | } |
122 | ||
c8f717fe | 123 | int X509_PURPOSE_get_by_sname(const char *sname) |
d4cec6a1 | 124 | { |
0f113f3e MC |
125 | int i; |
126 | X509_PURPOSE *xptmp; | |
127 | for (i = 0; i < X509_PURPOSE_get_count(); i++) { | |
128 | xptmp = X509_PURPOSE_get0(i); | |
86885c28 | 129 | if (strcmp(xptmp->sname, sname) == 0) |
0f113f3e MC |
130 | return i; |
131 | } | |
132 | return -1; | |
d4cec6a1 | 133 | } |
673b102c | 134 | |
13938ace | 135 | int X509_PURPOSE_get_by_id(int purpose) |
673b102c | 136 | { |
0f113f3e MC |
137 | X509_PURPOSE tmp; |
138 | int idx; | |
5b37fef0 | 139 | |
0f113f3e MC |
140 | if ((purpose >= X509_PURPOSE_MIN) && (purpose <= X509_PURPOSE_MAX)) |
141 | return purpose - X509_PURPOSE_MIN; | |
5b37fef0 | 142 | if (xptable == NULL) |
0f113f3e | 143 | return -1; |
5b37fef0 | 144 | tmp.purpose = purpose; |
0f113f3e | 145 | idx = sk_X509_PURPOSE_find(xptable, &tmp); |
5b37fef0 | 146 | if (idx < 0) |
0f113f3e MC |
147 | return -1; |
148 | return idx + X509_PURPOSE_COUNT; | |
673b102c DSH |
149 | } |
150 | ||
dd413410 | 151 | int X509_PURPOSE_add(int id, int trust, int flags, |
0f113f3e | 152 | int (*ck) (const X509_PURPOSE *, const X509 *, int), |
c8f717fe | 153 | const char *name, const char *sname, void *arg) |
0f113f3e MC |
154 | { |
155 | int idx; | |
156 | X509_PURPOSE *ptmp; | |
157 | /* | |
158 | * This is set according to what we change: application can't set it | |
159 | */ | |
160 | flags &= ~X509_PURPOSE_DYNAMIC; | |
161 | /* This will always be set for application modified trust entries */ | |
162 | flags |= X509_PURPOSE_DYNAMIC_NAME; | |
163 | /* Get existing entry if any */ | |
164 | idx = X509_PURPOSE_get_by_id(id); | |
165 | /* Need a new entry */ | |
166 | if (idx == -1) { | |
75ebbd9a | 167 | if ((ptmp = OPENSSL_malloc(sizeof(*ptmp))) == NULL) { |
0f113f3e MC |
168 | X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE); |
169 | return 0; | |
170 | } | |
171 | ptmp->flags = X509_PURPOSE_DYNAMIC; | |
172 | } else | |
173 | ptmp = X509_PURPOSE_get0(idx); | |
174 | ||
175 | /* OPENSSL_free existing name if dynamic */ | |
176 | if (ptmp->flags & X509_PURPOSE_DYNAMIC_NAME) { | |
177 | OPENSSL_free(ptmp->name); | |
178 | OPENSSL_free(ptmp->sname); | |
179 | } | |
180 | /* dup supplied name */ | |
7644a9ae RS |
181 | ptmp->name = OPENSSL_strdup(name); |
182 | ptmp->sname = OPENSSL_strdup(sname); | |
0f113f3e MC |
183 | if (!ptmp->name || !ptmp->sname) { |
184 | X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE); | |
137e5555 | 185 | goto err; |
0f113f3e MC |
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) { | |
75ebbd9a RS |
199 | if (xptable == NULL |
200 | && (xptable = sk_X509_PURPOSE_new(xp_cmp)) == NULL) { | |
0f113f3e | 201 | X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE); |
137e5555 | 202 | goto err; |
0f113f3e MC |
203 | } |
204 | if (!sk_X509_PURPOSE_push(xptable, ptmp)) { | |
205 | X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE); | |
137e5555 | 206 | goto err; |
0f113f3e MC |
207 | } |
208 | } | |
209 | return 1; | |
137e5555 MC |
210 | err: |
211 | if (idx == -1) { | |
212 | OPENSSL_free(ptmp->name); | |
213 | OPENSSL_free(ptmp->sname); | |
214 | OPENSSL_free(ptmp); | |
215 | } | |
216 | return 0; | |
673b102c DSH |
217 | } |
218 | ||
79875776 | 219 | static void xptable_free(X509_PURPOSE *p) |
0f113f3e MC |
220 | { |
221 | if (!p) | |
222 | return; | |
223 | if (p->flags & X509_PURPOSE_DYNAMIC) { | |
224 | if (p->flags & X509_PURPOSE_DYNAMIC_NAME) { | |
225 | OPENSSL_free(p->name); | |
226 | OPENSSL_free(p->sname); | |
227 | } | |
228 | OPENSSL_free(p); | |
229 | } | |
230 | } | |
79875776 BM |
231 | |
232 | void X509_PURPOSE_cleanup(void) | |
233 | { | |
0f113f3e | 234 | sk_X509_PURPOSE_pop_free(xptable, xptable_free); |
0f113f3e | 235 | xptable = NULL; |
79875776 BM |
236 | } |
237 | ||
c8f717fe | 238 | int X509_PURPOSE_get_id(const X509_PURPOSE *xp) |
673b102c | 239 | { |
0f113f3e | 240 | return xp->purpose; |
673b102c DSH |
241 | } |
242 | ||
c8f717fe | 243 | char *X509_PURPOSE_get0_name(const X509_PURPOSE *xp) |
d4cec6a1 | 244 | { |
0f113f3e | 245 | return xp->name; |
d4cec6a1 | 246 | } |
673b102c | 247 | |
c8f717fe | 248 | char *X509_PURPOSE_get0_sname(const X509_PURPOSE *xp) |
673b102c | 249 | { |
0f113f3e | 250 | return xp->sname; |
673b102c DSH |
251 | } |
252 | ||
c8f717fe | 253 | int X509_PURPOSE_get_trust(const X509_PURPOSE *xp) |
673b102c | 254 | { |
0f113f3e | 255 | return xp->trust; |
673b102c DSH |
256 | } |
257 | ||
babb3798 | 258 | static int nid_cmp(const int *a, const int *b) |
0f113f3e MC |
259 | { |
260 | return *a - *b; | |
261 | } | |
f1558bb4 | 262 | |
e19106f5 DSH |
263 | DECLARE_OBJ_BSEARCH_CMP_FN(int, int, nid); |
264 | IMPLEMENT_OBJ_BSEARCH_CMP_FN(int, int, nid); | |
babb3798 | 265 | |
f1558bb4 | 266 | int X509_supported_extension(X509_EXTENSION *ex) |
0f113f3e MC |
267 | { |
268 | /* | |
269 | * This table is a list of the NIDs of supported extensions: that is | |
270 | * those which are used by the verify process. If an extension is | |
271 | * critical and doesn't appear in this list then the verify process will | |
272 | * normally reject the certificate. The list must be kept in numerical | |
273 | * order because it will be searched using bsearch. | |
274 | */ | |
275 | ||
276 | static const int supported_nids[] = { | |
277 | NID_netscape_cert_type, /* 71 */ | |
278 | NID_key_usage, /* 83 */ | |
279 | NID_subject_alt_name, /* 85 */ | |
280 | NID_basic_constraints, /* 87 */ | |
281 | NID_certificate_policies, /* 89 */ | |
e6f648fd | 282 | NID_crl_distribution_points, /* 103 */ |
0f113f3e | 283 | NID_ext_key_usage, /* 126 */ |
47bbaa5b | 284 | #ifndef OPENSSL_NO_RFC3779 |
0f113f3e MC |
285 | NID_sbgp_ipAddrBlock, /* 290 */ |
286 | NID_sbgp_autonomousSysNum, /* 291 */ | |
47bbaa5b | 287 | #endif |
0f113f3e MC |
288 | NID_policy_constraints, /* 401 */ |
289 | NID_proxyCertInfo, /* 663 */ | |
290 | NID_name_constraints, /* 666 */ | |
291 | NID_policy_mappings, /* 747 */ | |
292 | NID_inhibit_any_policy /* 748 */ | |
293 | }; | |
294 | ||
295 | int ex_nid = OBJ_obj2nid(X509_EXTENSION_get_object(ex)); | |
296 | ||
297 | if (ex_nid == NID_undef) | |
298 | return 0; | |
299 | ||
b6eb9827 | 300 | if (OBJ_bsearch_nid(&ex_nid, supported_nids, OSSL_NELEM(supported_nids))) |
0f113f3e MC |
301 | return 1; |
302 | return 0; | |
303 | } | |
3e727a3b | 304 | |
ba4356ae | 305 | static int setup_dp(X509 *x, DIST_POINT *dp) |
0f113f3e MC |
306 | { |
307 | X509_NAME *iname = NULL; | |
308 | int i; | |
ba4356ae | 309 | |
0f113f3e MC |
310 | if (dp->reasons) { |
311 | if (dp->reasons->length > 0) | |
312 | dp->dp_reasons = dp->reasons->data[0]; | |
313 | if (dp->reasons->length > 1) | |
314 | dp->dp_reasons |= (dp->reasons->data[1] << 8); | |
315 | dp->dp_reasons &= CRLDP_ALL_REASONS; | |
316 | } else | |
317 | dp->dp_reasons = CRLDP_ALL_REASONS; | |
318 | if (!dp->distpoint || (dp->distpoint->type != 1)) | |
ba4356ae | 319 | return 1; |
0f113f3e MC |
320 | for (i = 0; i < sk_GENERAL_NAME_num(dp->CRLissuer); i++) { |
321 | GENERAL_NAME *gen = sk_GENERAL_NAME_value(dp->CRLissuer, i); | |
322 | if (gen->type == GEN_DIRNAME) { | |
323 | iname = gen->d.directoryName; | |
324 | break; | |
325 | } | |
326 | } | |
327 | if (!iname) | |
328 | iname = X509_get_issuer_name(x); | |
329 | ||
ba4356ae | 330 | return DIST_POINT_set_dpname(dp->distpoint, iname); |
0f113f3e | 331 | } |
3e727a3b | 332 | |
ba4356ae | 333 | static int setup_crldp(X509 *x) |
0f113f3e MC |
334 | { |
335 | int i; | |
ba4356ae BE |
336 | |
337 | x->crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, &i, NULL); | |
338 | if (x->crldp == NULL && i != -1) | |
339 | return 0; | |
340 | for (i = 0; i < sk_DIST_POINT_num(x->crldp); i++) { | |
341 | if (!setup_dp(x, sk_DIST_POINT_value(x->crldp, i))) | |
342 | return 0; | |
343 | } | |
344 | return 1; | |
0f113f3e | 345 | } |
f1558bb4 | 346 | |
f51e5ed6 DSH |
347 | #define V1_ROOT (EXFLAG_V1|EXFLAG_SS) |
348 | #define ku_reject(x, usage) \ | |
349 | (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) | |
350 | #define xku_reject(x, usage) \ | |
351 | (((x)->ex_flags & EXFLAG_XKUSAGE) && !((x)->ex_xkusage & (usage))) | |
352 | #define ns_reject(x, usage) \ | |
353 | (((x)->ex_flags & EXFLAG_NSCERT) && !((x)->ex_nscert & (usage))) | |
354 | ||
ce1b4fe1 | 355 | static void x509v3_cache_extensions(X509 *x) |
673b102c | 356 | { |
0f113f3e MC |
357 | BASIC_CONSTRAINTS *bs; |
358 | PROXY_CERT_INFO_EXTENSION *pci; | |
359 | ASN1_BIT_STRING *usage; | |
360 | ASN1_BIT_STRING *ns; | |
361 | EXTENDED_KEY_USAGE *extusage; | |
362 | X509_EXTENSION *ex; | |
0f113f3e | 363 | int i; |
bc624bd9 | 364 | |
7d38ca3f | 365 | #ifdef tsan_ld_acq |
f21b5b64 | 366 | /* fast lock-free check, see end of the function for details. */ |
7d38ca3f | 367 | if (tsan_ld_acq((TSAN_QUALIFIER int *)&x->ex_cached)) |
f21b5b64 | 368 | return; |
7d38ca3f | 369 | #endif |
f21b5b64 | 370 | |
bc624bd9 DMSP |
371 | CRYPTO_THREAD_write_lock(x->lock); |
372 | if (x->ex_flags & EXFLAG_SET) { | |
373 | CRYPTO_THREAD_unlock(x->lock); | |
374 | return; | |
375 | } | |
376 | ||
ba4356ae BE |
377 | if (!X509_digest(x, EVP_sha1(), x->sha1_hash, NULL)) |
378 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e MC |
379 | /* V1 should mean no extensions ... */ |
380 | if (!X509_get_version(x)) | |
381 | x->ex_flags |= EXFLAG_V1; | |
382 | /* Handle basic constraints */ | |
ba4356ae | 383 | if ((bs = X509_get_ext_d2i(x, NID_basic_constraints, &i, NULL))) { |
0f113f3e MC |
384 | if (bs->ca) |
385 | x->ex_flags |= EXFLAG_CA; | |
386 | if (bs->pathlen) { | |
387 | if ((bs->pathlen->type == V_ASN1_NEG_INTEGER) | |
388 | || !bs->ca) { | |
389 | x->ex_flags |= EXFLAG_INVALID; | |
390 | x->ex_pathlen = 0; | |
391 | } else | |
392 | x->ex_pathlen = ASN1_INTEGER_get(bs->pathlen); | |
393 | } else | |
394 | x->ex_pathlen = -1; | |
395 | BASIC_CONSTRAINTS_free(bs); | |
396 | x->ex_flags |= EXFLAG_BCONS; | |
ba4356ae BE |
397 | } else if (i != -1) { |
398 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e MC |
399 | } |
400 | /* Handle proxy certificates */ | |
ba4356ae | 401 | if ((pci = X509_get_ext_d2i(x, NID_proxyCertInfo, &i, NULL))) { |
0f113f3e MC |
402 | if (x->ex_flags & EXFLAG_CA |
403 | || X509_get_ext_by_NID(x, NID_subject_alt_name, -1) >= 0 | |
404 | || X509_get_ext_by_NID(x, NID_issuer_alt_name, -1) >= 0) { | |
405 | x->ex_flags |= EXFLAG_INVALID; | |
406 | } | |
407 | if (pci->pcPathLengthConstraint) { | |
408 | x->ex_pcpathlen = ASN1_INTEGER_get(pci->pcPathLengthConstraint); | |
409 | } else | |
410 | x->ex_pcpathlen = -1; | |
411 | PROXY_CERT_INFO_EXTENSION_free(pci); | |
412 | x->ex_flags |= EXFLAG_PROXY; | |
ba4356ae BE |
413 | } else if (i != -1) { |
414 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e MC |
415 | } |
416 | /* Handle key usage */ | |
ba4356ae | 417 | if ((usage = X509_get_ext_d2i(x, NID_key_usage, &i, NULL))) { |
0f113f3e MC |
418 | if (usage->length > 0) { |
419 | x->ex_kusage = usage->data[0]; | |
420 | if (usage->length > 1) | |
421 | x->ex_kusage |= usage->data[1] << 8; | |
422 | } else | |
423 | x->ex_kusage = 0; | |
424 | x->ex_flags |= EXFLAG_KUSAGE; | |
425 | ASN1_BIT_STRING_free(usage); | |
ba4356ae BE |
426 | } else if (i != -1) { |
427 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e MC |
428 | } |
429 | x->ex_xkusage = 0; | |
ba4356ae | 430 | if ((extusage = X509_get_ext_d2i(x, NID_ext_key_usage, &i, NULL))) { |
0f113f3e MC |
431 | x->ex_flags |= EXFLAG_XKUSAGE; |
432 | for (i = 0; i < sk_ASN1_OBJECT_num(extusage); i++) { | |
433 | switch (OBJ_obj2nid(sk_ASN1_OBJECT_value(extusage, i))) { | |
434 | case NID_server_auth: | |
435 | x->ex_xkusage |= XKU_SSL_SERVER; | |
436 | break; | |
437 | ||
438 | case NID_client_auth: | |
439 | x->ex_xkusage |= XKU_SSL_CLIENT; | |
440 | break; | |
441 | ||
442 | case NID_email_protect: | |
443 | x->ex_xkusage |= XKU_SMIME; | |
444 | break; | |
445 | ||
446 | case NID_code_sign: | |
447 | x->ex_xkusage |= XKU_CODE_SIGN; | |
448 | break; | |
449 | ||
450 | case NID_ms_sgc: | |
451 | case NID_ns_sgc: | |
452 | x->ex_xkusage |= XKU_SGC; | |
453 | break; | |
454 | ||
455 | case NID_OCSP_sign: | |
456 | x->ex_xkusage |= XKU_OCSP_SIGN; | |
457 | break; | |
458 | ||
459 | case NID_time_stamp: | |
460 | x->ex_xkusage |= XKU_TIMESTAMP; | |
461 | break; | |
462 | ||
463 | case NID_dvcs: | |
464 | x->ex_xkusage |= XKU_DVCS; | |
465 | break; | |
466 | ||
467 | case NID_anyExtendedKeyUsage: | |
468 | x->ex_xkusage |= XKU_ANYEKU; | |
469 | break; | |
470 | } | |
471 | } | |
472 | sk_ASN1_OBJECT_pop_free(extusage, ASN1_OBJECT_free); | |
ba4356ae BE |
473 | } else if (i != -1) { |
474 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e MC |
475 | } |
476 | ||
ba4356ae | 477 | if ((ns = X509_get_ext_d2i(x, NID_netscape_cert_type, &i, NULL))) { |
0f113f3e MC |
478 | if (ns->length > 0) |
479 | x->ex_nscert = ns->data[0]; | |
480 | else | |
481 | x->ex_nscert = 0; | |
482 | x->ex_flags |= EXFLAG_NSCERT; | |
483 | ASN1_BIT_STRING_free(ns); | |
ba4356ae BE |
484 | } else if (i != -1) { |
485 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e | 486 | } |
ba4356ae BE |
487 | x->skid = X509_get_ext_d2i(x, NID_subject_key_identifier, &i, NULL); |
488 | if (x->skid == NULL && i != -1) | |
489 | x->ex_flags |= EXFLAG_INVALID; | |
490 | x->akid = X509_get_ext_d2i(x, NID_authority_key_identifier, &i, NULL); | |
491 | if (x->akid == NULL && i != -1) | |
492 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e MC |
493 | /* Does subject name match issuer ? */ |
494 | if (!X509_NAME_cmp(X509_get_subject_name(x), X509_get_issuer_name(x))) { | |
495 | x->ex_flags |= EXFLAG_SI; | |
496 | /* If SKID matches AKID also indicate self signed */ | |
f51e5ed6 DSH |
497 | if (X509_check_akid(x, x->akid) == X509_V_OK && |
498 | !ku_reject(x, KU_KEY_CERT_SIGN)) | |
0f113f3e MC |
499 | x->ex_flags |= EXFLAG_SS; |
500 | } | |
ba4356ae BE |
501 | x->altname = X509_get_ext_d2i(x, NID_subject_alt_name, &i, NULL); |
502 | if (x->altname == NULL && i != -1) | |
503 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e | 504 | x->nc = X509_get_ext_d2i(x, NID_name_constraints, &i, NULL); |
ba4356ae BE |
505 | if (x->nc == NULL && i != -1) |
506 | x->ex_flags |= EXFLAG_INVALID; | |
507 | if (!setup_crldp(x)) | |
0f113f3e | 508 | x->ex_flags |= EXFLAG_INVALID; |
d43c4497 | 509 | |
47bbaa5b | 510 | #ifndef OPENSSL_NO_RFC3779 |
ba4356ae BE |
511 | x->rfc3779_addr = X509_get_ext_d2i(x, NID_sbgp_ipAddrBlock, &i, NULL); |
512 | if (x->rfc3779_addr == NULL && i != -1) | |
513 | x->ex_flags |= EXFLAG_INVALID; | |
514 | x->rfc3779_asid = X509_get_ext_d2i(x, NID_sbgp_autonomousSysNum, &i, NULL); | |
515 | if (x->rfc3779_asid == NULL && i != -1) | |
516 | x->ex_flags |= EXFLAG_INVALID; | |
47bbaa5b | 517 | #endif |
0f113f3e MC |
518 | for (i = 0; i < X509_get_ext_count(x); i++) { |
519 | ex = X509_get_ext(x, i); | |
520 | if (OBJ_obj2nid(X509_EXTENSION_get_object(ex)) | |
521 | == NID_freshest_crl) | |
522 | x->ex_flags |= EXFLAG_FRESHEST; | |
523 | if (!X509_EXTENSION_get_critical(ex)) | |
524 | continue; | |
525 | if (!X509_supported_extension(ex)) { | |
526 | x->ex_flags |= EXFLAG_CRITICAL; | |
527 | break; | |
528 | } | |
529 | } | |
786dd2c2 | 530 | x509_init_sig_info(x); |
0f113f3e | 531 | x->ex_flags |= EXFLAG_SET; |
7d38ca3f AP |
532 | #ifdef tsan_st_rel |
533 | tsan_st_rel((TSAN_QUALIFIER int *)&x->ex_cached, 1); | |
f21b5b64 | 534 | /* |
7d38ca3f AP |
535 | * Above store triggers fast lock-free check in the beginning of the |
536 | * function. But one has to ensure that the structure is "stable", i.e. | |
537 | * all stores are visible on all processors. Hence the release fence. | |
f21b5b64 | 538 | */ |
7d38ca3f AP |
539 | #endif |
540 | CRYPTO_THREAD_unlock(x->lock); | |
673b102c DSH |
541 | } |
542 | ||
1d97c843 TH |
543 | /*- |
544 | * CA checks common to all purposes | |
673b102c DSH |
545 | * return codes: |
546 | * 0 not a CA | |
547 | * 1 is a CA | |
548 | * 2 basicConstraints absent so "maybe" a CA | |
549 | * 3 basicConstraints absent but self signed V1. | |
bc501570 | 550 | * 4 basicConstraints absent but keyUsage present and keyCertSign asserted. |
673b102c DSH |
551 | */ |
552 | ||
5073ff03 | 553 | static int check_ca(const X509 *x) |
673b102c | 554 | { |
0f113f3e MC |
555 | /* keyUsage if present should allow cert signing */ |
556 | if (ku_reject(x, KU_KEY_CERT_SIGN)) | |
557 | return 0; | |
558 | if (x->ex_flags & EXFLAG_BCONS) { | |
559 | if (x->ex_flags & EXFLAG_CA) | |
560 | return 1; | |
561 | /* If basicConstraints says not a CA then say so */ | |
562 | else | |
563 | return 0; | |
564 | } else { | |
565 | /* we support V1 roots for... uh, I don't really know why. */ | |
566 | if ((x->ex_flags & V1_ROOT) == V1_ROOT) | |
567 | return 3; | |
568 | /* | |
569 | * If key usage present it must have certSign so tolerate it | |
570 | */ | |
571 | else if (x->ex_flags & EXFLAG_KUSAGE) | |
572 | return 4; | |
573 | /* Older certificates could have Netscape-specific CA types */ | |
574 | else if (x->ex_flags & EXFLAG_NSCERT && x->ex_nscert & NS_ANY_CA) | |
575 | return 5; | |
576 | /* can this still be regarded a CA certificate? I doubt it */ | |
577 | return 0; | |
578 | } | |
673b102c DSH |
579 | } |
580 | ||
9961cb77 RL |
581 | void X509_set_proxy_flag(X509 *x) |
582 | { | |
583 | x->ex_flags |= EXFLAG_PROXY; | |
584 | } | |
585 | ||
fe0169b0 RL |
586 | void X509_set_proxy_pathlen(X509 *x, long l) |
587 | { | |
588 | x->ex_pcpathlen = l; | |
589 | } | |
590 | ||
5073ff03 RL |
591 | int X509_check_ca(X509 *x) |
592 | { | |
bc624bd9 | 593 | x509v3_cache_extensions(x); |
5073ff03 | 594 | |
0f113f3e | 595 | return check_ca(x); |
5073ff03 RL |
596 | } |
597 | ||
0cb957a6 | 598 | /* Check SSL CA: common checks for SSL client and server */ |
ccd86b68 | 599 | static int check_ssl_ca(const X509 *x) |
0cb957a6 | 600 | { |
0f113f3e MC |
601 | int ca_ret; |
602 | ca_ret = check_ca(x); | |
603 | if (!ca_ret) | |
604 | return 0; | |
605 | /* check nsCertType if present */ | |
606 | if (ca_ret != 5 || x->ex_nscert & NS_SSL_CA) | |
607 | return ca_ret; | |
608 | else | |
609 | return 0; | |
0cb957a6 | 610 | } |
8cff6331 | 611 | |
0f113f3e MC |
612 | static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x, |
613 | int ca) | |
673b102c | 614 | { |
0f113f3e MC |
615 | if (xku_reject(x, XKU_SSL_CLIENT)) |
616 | return 0; | |
617 | if (ca) | |
618 | return check_ssl_ca(x); | |
619 | /* We need to do digital signatures or key agreement */ | |
620 | if (ku_reject(x, KU_DIGITAL_SIGNATURE | KU_KEY_AGREEMENT)) | |
621 | return 0; | |
622 | /* nsCertType if present should allow SSL client use */ | |
623 | if (ns_reject(x, NS_SSL_CLIENT)) | |
624 | return 0; | |
625 | return 1; | |
673b102c | 626 | } |
0f113f3e MC |
627 | |
628 | /* | |
629 | * Key usage needed for TLS/SSL server: digital signature, encipherment or | |
7568d15a DSH |
630 | * key agreement. The ssl code can check this more thoroughly for individual |
631 | * key types. | |
632 | */ | |
633 | #define KU_TLS \ | |
0f113f3e | 634 | KU_DIGITAL_SIGNATURE|KU_KEY_ENCIPHERMENT|KU_KEY_AGREEMENT |
673b102c | 635 | |
0f113f3e MC |
636 | static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x, |
637 | int ca) | |
673b102c | 638 | { |
0f113f3e MC |
639 | if (xku_reject(x, XKU_SSL_SERVER | XKU_SGC)) |
640 | return 0; | |
641 | if (ca) | |
642 | return check_ssl_ca(x); | |
643 | ||
644 | if (ns_reject(x, NS_SSL_SERVER)) | |
645 | return 0; | |
646 | if (ku_reject(x, KU_TLS)) | |
647 | return 0; | |
673b102c | 648 | |
0f113f3e | 649 | return 1; |
673b102c DSH |
650 | |
651 | } | |
652 | ||
0f113f3e MC |
653 | static int check_purpose_ns_ssl_server(const X509_PURPOSE *xp, const X509 *x, |
654 | int ca) | |
673b102c | 655 | { |
0f113f3e MC |
656 | int ret; |
657 | ret = check_purpose_ssl_server(xp, x, ca); | |
658 | if (!ret || ca) | |
659 | return ret; | |
660 | /* We need to encipher or Netscape complains */ | |
661 | if (ku_reject(x, KU_KEY_ENCIPHERMENT)) | |
662 | return 0; | |
663 | return ret; | |
673b102c DSH |
664 | } |
665 | ||
666 | /* common S/MIME checks */ | |
ccd86b68 | 667 | static int purpose_smime(const X509 *x, int ca) |
673b102c | 668 | { |
0f113f3e MC |
669 | if (xku_reject(x, XKU_SMIME)) |
670 | return 0; | |
671 | if (ca) { | |
672 | int ca_ret; | |
673 | ca_ret = check_ca(x); | |
674 | if (!ca_ret) | |
675 | return 0; | |
676 | /* check nsCertType if present */ | |
677 | if (ca_ret != 5 || x->ex_nscert & NS_SMIME_CA) | |
678 | return ca_ret; | |
679 | else | |
680 | return 0; | |
681 | } | |
682 | if (x->ex_flags & EXFLAG_NSCERT) { | |
683 | if (x->ex_nscert & NS_SMIME) | |
684 | return 1; | |
685 | /* Workaround for some buggy certificates */ | |
686 | if (x->ex_nscert & NS_SSL_CLIENT) | |
687 | return 2; | |
688 | return 0; | |
689 | } | |
690 | return 1; | |
673b102c DSH |
691 | } |
692 | ||
0f113f3e MC |
693 | static int check_purpose_smime_sign(const X509_PURPOSE *xp, const X509 *x, |
694 | int ca) | |
673b102c | 695 | { |
0f113f3e MC |
696 | int ret; |
697 | ret = purpose_smime(x, ca); | |
698 | if (!ret || ca) | |
699 | return ret; | |
700 | if (ku_reject(x, KU_DIGITAL_SIGNATURE | KU_NON_REPUDIATION)) | |
701 | return 0; | |
702 | return ret; | |
673b102c DSH |
703 | } |
704 | ||
0f113f3e MC |
705 | static int check_purpose_smime_encrypt(const X509_PURPOSE *xp, const X509 *x, |
706 | int ca) | |
673b102c | 707 | { |
0f113f3e MC |
708 | int ret; |
709 | ret = purpose_smime(x, ca); | |
710 | if (!ret || ca) | |
711 | return ret; | |
712 | if (ku_reject(x, KU_KEY_ENCIPHERMENT)) | |
713 | return 0; | |
714 | return ret; | |
673b102c DSH |
715 | } |
716 | ||
0f113f3e MC |
717 | static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x, |
718 | int ca) | |
673b102c | 719 | { |
0f113f3e MC |
720 | if (ca) { |
721 | int ca_ret; | |
722 | if ((ca_ret = check_ca(x)) != 2) | |
723 | return ca_ret; | |
724 | else | |
725 | return 0; | |
726 | } | |
727 | if (ku_reject(x, KU_CRL_SIGN)) | |
728 | return 0; | |
729 | return 1; | |
673b102c | 730 | } |
068fdce8 | 731 | |
0f113f3e MC |
732 | /* |
733 | * OCSP helper: this is *not* a full OCSP check. It just checks that each CA | |
734 | * is valid. Additional checks must be made on the chain. | |
81f169e9 DSH |
735 | */ |
736 | ||
737 | static int ocsp_helper(const X509_PURPOSE *xp, const X509 *x, int ca) | |
738 | { | |
0f113f3e MC |
739 | /* |
740 | * Must be a valid CA. Should we really support the "I don't know" value | |
741 | * (2)? | |
742 | */ | |
743 | if (ca) | |
744 | return check_ca(x); | |
745 | /* leaf certificate is checked in OCSP_verify() */ | |
746 | return 1; | |
81f169e9 DSH |
747 | } |
748 | ||
c7235be6 | 749 | static int check_purpose_timestamp_sign(const X509_PURPOSE *xp, const X509 *x, |
0f113f3e | 750 | int ca) |
c7235be6 | 751 | { |
0f113f3e MC |
752 | int i_ext; |
753 | ||
754 | /* If ca is true we must return if this is a valid CA certificate. */ | |
755 | if (ca) | |
756 | return check_ca(x); | |
757 | ||
758 | /* | |
759 | * Check the optional key usage field: | |
760 | * if Key Usage is present, it must be one of digitalSignature | |
761 | * and/or nonRepudiation (other values are not consistent and shall | |
762 | * be rejected). | |
763 | */ | |
764 | if ((x->ex_flags & EXFLAG_KUSAGE) | |
765 | && ((x->ex_kusage & ~(KU_NON_REPUDIATION | KU_DIGITAL_SIGNATURE)) || | |
766 | !(x->ex_kusage & (KU_NON_REPUDIATION | KU_DIGITAL_SIGNATURE)))) | |
767 | return 0; | |
768 | ||
769 | /* Only time stamp key usage is permitted and it's required. */ | |
770 | if (!(x->ex_flags & EXFLAG_XKUSAGE) || x->ex_xkusage != XKU_TIMESTAMP) | |
771 | return 0; | |
772 | ||
773 | /* Extended Key Usage MUST be critical */ | |
7569362e | 774 | i_ext = X509_get_ext_by_NID(x, NID_ext_key_usage, -1); |
0f113f3e MC |
775 | if (i_ext >= 0) { |
776 | X509_EXTENSION *ext = X509_get_ext((X509 *)x, i_ext); | |
777 | if (!X509_EXTENSION_get_critical(ext)) | |
778 | return 0; | |
779 | } | |
780 | ||
781 | return 1; | |
c7235be6 UM |
782 | } |
783 | ||
ccd86b68 | 784 | static int no_check(const X509_PURPOSE *xp, const X509 *x, int ca) |
068fdce8 | 785 | { |
0f113f3e | 786 | return 1; |
068fdce8 | 787 | } |
2f043896 | 788 | |
1d97c843 TH |
789 | /*- |
790 | * Various checks to see if one certificate issued the second. | |
2f043896 DSH |
791 | * This can be used to prune a set of possible issuer certificates |
792 | * which have been looked up using some simple method such as by | |
793 | * subject name. | |
794 | * These are: | |
795 | * 1. Check issuer_name(subject) == subject_name(issuer) | |
796 | * 2. If akid(subject) exists check it matches issuer | |
797 | * 3. If key_usage(issuer) exists check it supports certificate signing | |
798 | * returns 0 for OK, positive for reason for mismatch, reasons match | |
799 | * codes for X509_verify_cert() | |
800 | */ | |
801 | ||
802 | int X509_check_issued(X509 *issuer, X509 *subject) | |
803 | { | |
0f113f3e MC |
804 | if (X509_NAME_cmp(X509_get_subject_name(issuer), |
805 | X509_get_issuer_name(subject))) | |
806 | return X509_V_ERR_SUBJECT_ISSUER_MISMATCH; | |
bc624bd9 | 807 | |
0f113f3e | 808 | x509v3_cache_extensions(issuer); |
ba4356ae BE |
809 | if (issuer->ex_flags & EXFLAG_INVALID) |
810 | return X509_V_ERR_UNSPECIFIED; | |
0f113f3e | 811 | x509v3_cache_extensions(subject); |
ba4356ae BE |
812 | if (subject->ex_flags & EXFLAG_INVALID) |
813 | return X509_V_ERR_UNSPECIFIED; | |
0f113f3e MC |
814 | |
815 | if (subject->akid) { | |
816 | int ret = X509_check_akid(issuer, subject->akid); | |
817 | if (ret != X509_V_OK) | |
818 | return ret; | |
819 | } | |
820 | ||
821 | if (subject->ex_flags & EXFLAG_PROXY) { | |
822 | if (ku_reject(issuer, KU_DIGITAL_SIGNATURE)) | |
823 | return X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE; | |
824 | } else if (ku_reject(issuer, KU_KEY_CERT_SIGN)) | |
825 | return X509_V_ERR_KEYUSAGE_NO_CERTSIGN; | |
826 | return X509_V_OK; | |
2f043896 DSH |
827 | } |
828 | ||
bc7535bc | 829 | int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid) |
0f113f3e | 830 | { |
bc7535bc | 831 | |
0f113f3e MC |
832 | if (!akid) |
833 | return X509_V_OK; | |
834 | ||
835 | /* Check key ids (if present) */ | |
836 | if (akid->keyid && issuer->skid && | |
837 | ASN1_OCTET_STRING_cmp(akid->keyid, issuer->skid)) | |
838 | return X509_V_ERR_AKID_SKID_MISMATCH; | |
839 | /* Check serial number */ | |
840 | if (akid->serial && | |
841 | ASN1_INTEGER_cmp(X509_get_serialNumber(issuer), akid->serial)) | |
842 | return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH; | |
843 | /* Check issuer name */ | |
844 | if (akid->issuer) { | |
845 | /* | |
846 | * Ugh, for some peculiar reason AKID includes SEQUENCE OF | |
847 | * GeneralName. So look for a DirName. There may be more than one but | |
848 | * we only take any notice of the first. | |
849 | */ | |
850 | GENERAL_NAMES *gens; | |
851 | GENERAL_NAME *gen; | |
852 | X509_NAME *nm = NULL; | |
853 | int i; | |
854 | gens = akid->issuer; | |
855 | for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) { | |
856 | gen = sk_GENERAL_NAME_value(gens, i); | |
857 | if (gen->type == GEN_DIRNAME) { | |
858 | nm = gen->d.dirn; | |
859 | break; | |
860 | } | |
861 | } | |
862 | if (nm && X509_NAME_cmp(nm, X509_get_issuer_name(issuer))) | |
863 | return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH; | |
864 | } | |
865 | return X509_V_OK; | |
866 | } | |
063f1f0c DSH |
867 | |
868 | uint32_t X509_get_extension_flags(X509 *x) | |
869 | { | |
109f8b5d | 870 | /* Call for side-effect of computing hash and caching extensions */ |
063f1f0c DSH |
871 | X509_check_purpose(x, -1, -1); |
872 | return x->ex_flags; | |
873 | } | |
874 | ||
875 | uint32_t X509_get_key_usage(X509 *x) | |
876 | { | |
109f8b5d | 877 | /* Call for side-effect of computing hash and caching extensions */ |
ba4356ae BE |
878 | if (X509_check_purpose(x, -1, -1) != 1) |
879 | return 0; | |
063f1f0c DSH |
880 | if (x->ex_flags & EXFLAG_KUSAGE) |
881 | return x->ex_kusage; | |
882 | return UINT32_MAX; | |
883 | } | |
884 | ||
885 | uint32_t X509_get_extended_key_usage(X509 *x) | |
886 | { | |
109f8b5d | 887 | /* Call for side-effect of computing hash and caching extensions */ |
ba4356ae BE |
888 | if (X509_check_purpose(x, -1, -1) != 1) |
889 | return 0; | |
063f1f0c DSH |
890 | if (x->ex_flags & EXFLAG_XKUSAGE) |
891 | return x->ex_xkusage; | |
892 | return UINT32_MAX; | |
893 | } | |
d19a50c9 DSH |
894 | |
895 | const ASN1_OCTET_STRING *X509_get0_subject_key_id(X509 *x) | |
896 | { | |
109f8b5d | 897 | /* Call for side-effect of computing hash and caching extensions */ |
ba4356ae BE |
898 | if (X509_check_purpose(x, -1, -1) != 1) |
899 | return NULL; | |
d19a50c9 DSH |
900 | return x->skid; |
901 | } | |
e417070c | 902 | |
b383aa20 MP |
903 | const ASN1_OCTET_STRING *X509_get0_authority_key_id(X509 *x) |
904 | { | |
905 | /* Call for side-effect of computing hash and caching extensions */ | |
ba4356ae BE |
906 | if (X509_check_purpose(x, -1, -1) != 1) |
907 | return NULL; | |
b383aa20 MP |
908 | return (x->akid != NULL ? x->akid->keyid : NULL); |
909 | } | |
910 | ||
74b9ce2d DMSP |
911 | const GENERAL_NAMES *X509_get0_authority_issuer(X509 *x) |
912 | { | |
913 | /* Call for side-effect of computing hash and caching extensions */ | |
ba4356ae BE |
914 | if (X509_check_purpose(x, -1, -1) != 1) |
915 | return NULL; | |
74b9ce2d DMSP |
916 | return (x->akid != NULL ? x->akid->issuer : NULL); |
917 | } | |
918 | ||
919 | const ASN1_INTEGER *X509_get0_authority_serial(X509 *x) | |
920 | { | |
921 | /* Call for side-effect of computing hash and caching extensions */ | |
ba4356ae BE |
922 | if (X509_check_purpose(x, -1, -1) != 1) |
923 | return NULL; | |
74b9ce2d DMSP |
924 | return (x->akid != NULL ? x->akid->serial : NULL); |
925 | } | |
926 | ||
e417070c RS |
927 | long X509_get_pathlen(X509 *x) |
928 | { | |
929 | /* Called for side effect of caching extensions */ | |
930 | if (X509_check_purpose(x, -1, -1) != 1 | |
931 | || (x->ex_flags & EXFLAG_BCONS) == 0) | |
932 | return -1; | |
933 | return x->ex_pathlen; | |
934 | } | |
fe0169b0 RL |
935 | |
936 | long X509_get_proxy_pathlen(X509 *x) | |
937 | { | |
938 | /* Called for side effect of caching extensions */ | |
939 | if (X509_check_purpose(x, -1, -1) != 1 | |
940 | || (x->ex_flags & EXFLAG_PROXY) == 0) | |
941 | return -1; | |
942 | return x->ex_pcpathlen; | |
943 | } |