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Commit | Line | Data |
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0f113f3e | 1 | /* |
7e06a675 | 2 | * Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved. |
673b102c | 3 | * |
4286ca47 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
d2e9e320 RS |
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> |
25f2138b | 15 | #include "crypto/x509.h" |
f21b5b64 | 16 | #include "internal/tsan_assist.h" |
673b102c | 17 | |
ccd86b68 | 18 | static int check_ssl_ca(const X509 *x); |
0f113f3e MC |
19 | static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x, |
20 | int ca); | |
21 | static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x, | |
22 | int ca); | |
23 | static int check_purpose_ns_ssl_server(const X509_PURPOSE *xp, const X509 *x, | |
24 | int ca); | |
ccd86b68 | 25 | static int purpose_smime(const X509 *x, int ca); |
0f113f3e MC |
26 | static int check_purpose_smime_sign(const X509_PURPOSE *xp, const X509 *x, |
27 | int ca); | |
28 | static int check_purpose_smime_encrypt(const X509_PURPOSE *xp, const X509 *x, | |
29 | int ca); | |
30 | static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x, | |
31 | int ca); | |
32 | static int check_purpose_timestamp_sign(const X509_PURPOSE *xp, const X509 *x, | |
33 | int ca); | |
ccd86b68 | 34 | static int no_check(const X509_PURPOSE *xp, const X509 *x, int ca); |
81f169e9 | 35 | static int ocsp_helper(const X509_PURPOSE *xp, const X509 *x, int ca); |
ccd86b68 | 36 | |
0f113f3e | 37 | static int xp_cmp(const X509_PURPOSE *const *a, const X509_PURPOSE *const *b); |
d4cec6a1 | 38 | static void xptable_free(X509_PURPOSE *p); |
673b102c DSH |
39 | |
40 | static X509_PURPOSE xstandard[] = { | |
0f113f3e MC |
41 | {X509_PURPOSE_SSL_CLIENT, X509_TRUST_SSL_CLIENT, 0, |
42 | check_purpose_ssl_client, "SSL client", "sslclient", NULL}, | |
43 | {X509_PURPOSE_SSL_SERVER, X509_TRUST_SSL_SERVER, 0, | |
44 | check_purpose_ssl_server, "SSL server", "sslserver", NULL}, | |
45 | {X509_PURPOSE_NS_SSL_SERVER, X509_TRUST_SSL_SERVER, 0, | |
46 | check_purpose_ns_ssl_server, "Netscape SSL server", "nssslserver", NULL}, | |
47 | {X509_PURPOSE_SMIME_SIGN, X509_TRUST_EMAIL, 0, check_purpose_smime_sign, | |
48 | "S/MIME signing", "smimesign", NULL}, | |
49 | {X509_PURPOSE_SMIME_ENCRYPT, X509_TRUST_EMAIL, 0, | |
50 | check_purpose_smime_encrypt, "S/MIME encryption", "smimeencrypt", NULL}, | |
51 | {X509_PURPOSE_CRL_SIGN, X509_TRUST_COMPAT, 0, check_purpose_crl_sign, | |
52 | "CRL signing", "crlsign", NULL}, | |
53 | {X509_PURPOSE_ANY, X509_TRUST_DEFAULT, 0, no_check, "Any Purpose", "any", | |
54 | NULL}, | |
55 | {X509_PURPOSE_OCSP_HELPER, X509_TRUST_COMPAT, 0, ocsp_helper, | |
56 | "OCSP helper", "ocsphelper", NULL}, | |
57 | {X509_PURPOSE_TIMESTAMP_SIGN, X509_TRUST_TSA, 0, | |
58 | check_purpose_timestamp_sign, "Time Stamp signing", "timestampsign", | |
59 | NULL}, | |
673b102c DSH |
60 | }; |
61 | ||
b6eb9827 | 62 | #define X509_PURPOSE_COUNT OSSL_NELEM(xstandard) |
dd413410 | 63 | |
79875776 | 64 | static STACK_OF(X509_PURPOSE) *xptable = NULL; |
673b102c | 65 | |
0f113f3e | 66 | static int xp_cmp(const X509_PURPOSE *const *a, const X509_PURPOSE *const *b) |
673b102c | 67 | { |
0f113f3e | 68 | return (*a)->purpose - (*b)->purpose; |
673b102c DSH |
69 | } |
70 | ||
0f113f3e MC |
71 | /* |
72 | * As much as I'd like to make X509_check_purpose use a "const" X509* I | |
73 | * really can't because it does recalculate hashes and do other non-const | |
74 | * things. | |
75 | */ | |
673b102c DSH |
76 | int X509_check_purpose(X509 *x, int id, int ca) |
77 | { | |
0f113f3e MC |
78 | int idx; |
79 | const X509_PURPOSE *pt; | |
bc624bd9 | 80 | |
33328581 | 81 | if (!X509v3_cache_extensions(x, NULL, NULL)) |
7e06a675 | 82 | return -1; |
bc624bd9 | 83 | |
109f8b5d | 84 | /* Return if side-effect only call */ |
0f113f3e MC |
85 | if (id == -1) |
86 | return 1; | |
87 | idx = X509_PURPOSE_get_by_id(id); | |
88 | if (idx == -1) | |
89 | return -1; | |
90 | pt = X509_PURPOSE_get0(idx); | |
91 | return pt->check_purpose(pt, x, ca); | |
673b102c | 92 | } |
e947f396 | 93 | |
926a56bf DSH |
94 | int X509_PURPOSE_set(int *p, int purpose) |
95 | { | |
0f113f3e MC |
96 | if (X509_PURPOSE_get_by_id(purpose) == -1) { |
97 | X509V3err(X509V3_F_X509_PURPOSE_SET, X509V3_R_INVALID_PURPOSE); | |
98 | return 0; | |
99 | } | |
100 | *p = purpose; | |
101 | return 1; | |
926a56bf DSH |
102 | } |
103 | ||
d4cec6a1 DSH |
104 | int X509_PURPOSE_get_count(void) |
105 | { | |
0f113f3e MC |
106 | if (!xptable) |
107 | return X509_PURPOSE_COUNT; | |
108 | return sk_X509_PURPOSE_num(xptable) + X509_PURPOSE_COUNT; | |
d4cec6a1 | 109 | } |
ce1b4fe1 | 110 | |
0f113f3e | 111 | X509_PURPOSE *X509_PURPOSE_get0(int idx) |
d4cec6a1 | 112 | { |
0f113f3e MC |
113 | if (idx < 0) |
114 | return NULL; | |
115 | if (idx < (int)X509_PURPOSE_COUNT) | |
116 | return xstandard + idx; | |
117 | return sk_X509_PURPOSE_value(xptable, idx - X509_PURPOSE_COUNT); | |
d4cec6a1 DSH |
118 | } |
119 | ||
c8f717fe | 120 | int X509_PURPOSE_get_by_sname(const char *sname) |
d4cec6a1 | 121 | { |
0f113f3e MC |
122 | int i; |
123 | X509_PURPOSE *xptmp; | |
124 | for (i = 0; i < X509_PURPOSE_get_count(); i++) { | |
125 | xptmp = X509_PURPOSE_get0(i); | |
86885c28 | 126 | if (strcmp(xptmp->sname, sname) == 0) |
0f113f3e MC |
127 | return i; |
128 | } | |
129 | return -1; | |
d4cec6a1 | 130 | } |
673b102c | 131 | |
13938ace | 132 | int X509_PURPOSE_get_by_id(int purpose) |
673b102c | 133 | { |
0f113f3e MC |
134 | X509_PURPOSE tmp; |
135 | int idx; | |
5b37fef0 | 136 | |
0f113f3e MC |
137 | if ((purpose >= X509_PURPOSE_MIN) && (purpose <= X509_PURPOSE_MAX)) |
138 | return purpose - X509_PURPOSE_MIN; | |
5b37fef0 | 139 | if (xptable == NULL) |
0f113f3e | 140 | return -1; |
5b37fef0 | 141 | tmp.purpose = purpose; |
0f113f3e | 142 | idx = sk_X509_PURPOSE_find(xptable, &tmp); |
5b37fef0 | 143 | if (idx < 0) |
0f113f3e MC |
144 | return -1; |
145 | return idx + X509_PURPOSE_COUNT; | |
673b102c DSH |
146 | } |
147 | ||
dd413410 | 148 | int X509_PURPOSE_add(int id, int trust, int flags, |
0f113f3e | 149 | int (*ck) (const X509_PURPOSE *, const X509 *, int), |
c8f717fe | 150 | const char *name, const char *sname, void *arg) |
0f113f3e MC |
151 | { |
152 | int idx; | |
153 | X509_PURPOSE *ptmp; | |
154 | /* | |
155 | * This is set according to what we change: application can't set it | |
156 | */ | |
157 | flags &= ~X509_PURPOSE_DYNAMIC; | |
158 | /* This will always be set for application modified trust entries */ | |
159 | flags |= X509_PURPOSE_DYNAMIC_NAME; | |
160 | /* Get existing entry if any */ | |
161 | idx = X509_PURPOSE_get_by_id(id); | |
162 | /* Need a new entry */ | |
163 | if (idx == -1) { | |
75ebbd9a | 164 | if ((ptmp = OPENSSL_malloc(sizeof(*ptmp))) == NULL) { |
0f113f3e MC |
165 | X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE); |
166 | return 0; | |
167 | } | |
168 | ptmp->flags = X509_PURPOSE_DYNAMIC; | |
169 | } else | |
170 | ptmp = X509_PURPOSE_get0(idx); | |
171 | ||
172 | /* OPENSSL_free existing name if dynamic */ | |
173 | if (ptmp->flags & X509_PURPOSE_DYNAMIC_NAME) { | |
174 | OPENSSL_free(ptmp->name); | |
175 | OPENSSL_free(ptmp->sname); | |
176 | } | |
177 | /* dup supplied name */ | |
7644a9ae RS |
178 | ptmp->name = OPENSSL_strdup(name); |
179 | ptmp->sname = OPENSSL_strdup(sname); | |
12a765a5 | 180 | if (ptmp->name == NULL|| ptmp->sname == NULL) { |
0f113f3e | 181 | X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE); |
137e5555 | 182 | goto err; |
0f113f3e MC |
183 | } |
184 | /* Keep the dynamic flag of existing entry */ | |
185 | ptmp->flags &= X509_PURPOSE_DYNAMIC; | |
186 | /* Set all other flags */ | |
187 | ptmp->flags |= flags; | |
188 | ||
189 | ptmp->purpose = id; | |
190 | ptmp->trust = trust; | |
191 | ptmp->check_purpose = ck; | |
192 | ptmp->usr_data = arg; | |
193 | ||
194 | /* If its a new entry manage the dynamic table */ | |
195 | if (idx == -1) { | |
75ebbd9a RS |
196 | if (xptable == NULL |
197 | && (xptable = sk_X509_PURPOSE_new(xp_cmp)) == NULL) { | |
0f113f3e | 198 | X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE); |
137e5555 | 199 | goto err; |
0f113f3e MC |
200 | } |
201 | if (!sk_X509_PURPOSE_push(xptable, ptmp)) { | |
202 | X509V3err(X509V3_F_X509_PURPOSE_ADD, ERR_R_MALLOC_FAILURE); | |
137e5555 | 203 | goto err; |
0f113f3e MC |
204 | } |
205 | } | |
206 | return 1; | |
137e5555 MC |
207 | err: |
208 | if (idx == -1) { | |
209 | OPENSSL_free(ptmp->name); | |
210 | OPENSSL_free(ptmp->sname); | |
211 | OPENSSL_free(ptmp); | |
212 | } | |
213 | return 0; | |
673b102c DSH |
214 | } |
215 | ||
79875776 | 216 | static void xptable_free(X509_PURPOSE *p) |
0f113f3e | 217 | { |
12a765a5 | 218 | if (p == NULL) |
0f113f3e MC |
219 | return; |
220 | if (p->flags & X509_PURPOSE_DYNAMIC) { | |
221 | if (p->flags & X509_PURPOSE_DYNAMIC_NAME) { | |
222 | OPENSSL_free(p->name); | |
223 | OPENSSL_free(p->sname); | |
224 | } | |
225 | OPENSSL_free(p); | |
226 | } | |
227 | } | |
79875776 BM |
228 | |
229 | void X509_PURPOSE_cleanup(void) | |
230 | { | |
0f113f3e | 231 | sk_X509_PURPOSE_pop_free(xptable, xptable_free); |
0f113f3e | 232 | xptable = NULL; |
79875776 BM |
233 | } |
234 | ||
c8f717fe | 235 | int X509_PURPOSE_get_id(const X509_PURPOSE *xp) |
673b102c | 236 | { |
0f113f3e | 237 | return xp->purpose; |
673b102c DSH |
238 | } |
239 | ||
c8f717fe | 240 | char *X509_PURPOSE_get0_name(const X509_PURPOSE *xp) |
d4cec6a1 | 241 | { |
0f113f3e | 242 | return xp->name; |
d4cec6a1 | 243 | } |
673b102c | 244 | |
c8f717fe | 245 | char *X509_PURPOSE_get0_sname(const X509_PURPOSE *xp) |
673b102c | 246 | { |
0f113f3e | 247 | return xp->sname; |
673b102c DSH |
248 | } |
249 | ||
c8f717fe | 250 | int X509_PURPOSE_get_trust(const X509_PURPOSE *xp) |
673b102c | 251 | { |
0f113f3e | 252 | return xp->trust; |
673b102c DSH |
253 | } |
254 | ||
babb3798 | 255 | static int nid_cmp(const int *a, const int *b) |
0f113f3e MC |
256 | { |
257 | return *a - *b; | |
258 | } | |
f1558bb4 | 259 | |
e19106f5 DSH |
260 | DECLARE_OBJ_BSEARCH_CMP_FN(int, int, nid); |
261 | IMPLEMENT_OBJ_BSEARCH_CMP_FN(int, int, nid); | |
babb3798 | 262 | |
f1558bb4 | 263 | int X509_supported_extension(X509_EXTENSION *ex) |
0f113f3e MC |
264 | { |
265 | /* | |
266 | * This table is a list of the NIDs of supported extensions: that is | |
267 | * those which are used by the verify process. If an extension is | |
268 | * critical and doesn't appear in this list then the verify process will | |
269 | * normally reject the certificate. The list must be kept in numerical | |
270 | * order because it will be searched using bsearch. | |
271 | */ | |
272 | ||
273 | static const int supported_nids[] = { | |
274 | NID_netscape_cert_type, /* 71 */ | |
275 | NID_key_usage, /* 83 */ | |
276 | NID_subject_alt_name, /* 85 */ | |
277 | NID_basic_constraints, /* 87 */ | |
278 | NID_certificate_policies, /* 89 */ | |
e6f648fd | 279 | NID_crl_distribution_points, /* 103 */ |
0f113f3e | 280 | NID_ext_key_usage, /* 126 */ |
47bbaa5b | 281 | #ifndef OPENSSL_NO_RFC3779 |
0f113f3e MC |
282 | NID_sbgp_ipAddrBlock, /* 290 */ |
283 | NID_sbgp_autonomousSysNum, /* 291 */ | |
47bbaa5b | 284 | #endif |
0f113f3e MC |
285 | NID_policy_constraints, /* 401 */ |
286 | NID_proxyCertInfo, /* 663 */ | |
287 | NID_name_constraints, /* 666 */ | |
288 | NID_policy_mappings, /* 747 */ | |
289 | NID_inhibit_any_policy /* 748 */ | |
290 | }; | |
291 | ||
292 | int ex_nid = OBJ_obj2nid(X509_EXTENSION_get_object(ex)); | |
293 | ||
294 | if (ex_nid == NID_undef) | |
295 | return 0; | |
296 | ||
b6eb9827 | 297 | if (OBJ_bsearch_nid(&ex_nid, supported_nids, OSSL_NELEM(supported_nids))) |
0f113f3e MC |
298 | return 1; |
299 | return 0; | |
300 | } | |
3e727a3b | 301 | |
7e06a675 | 302 | static int setup_dp(X509 *x, DIST_POINT *dp) |
0f113f3e | 303 | { |
8cc86b81 | 304 | const X509_NAME *iname = NULL; |
0f113f3e | 305 | int i; |
7e06a675 | 306 | |
0f113f3e MC |
307 | if (dp->reasons) { |
308 | if (dp->reasons->length > 0) | |
309 | dp->dp_reasons = dp->reasons->data[0]; | |
310 | if (dp->reasons->length > 1) | |
311 | dp->dp_reasons |= (dp->reasons->data[1] << 8); | |
312 | dp->dp_reasons &= CRLDP_ALL_REASONS; | |
313 | } else | |
314 | dp->dp_reasons = CRLDP_ALL_REASONS; | |
315 | if (!dp->distpoint || (dp->distpoint->type != 1)) | |
7e06a675 | 316 | return 1; |
0f113f3e MC |
317 | for (i = 0; i < sk_GENERAL_NAME_num(dp->CRLissuer); i++) { |
318 | GENERAL_NAME *gen = sk_GENERAL_NAME_value(dp->CRLissuer, i); | |
319 | if (gen->type == GEN_DIRNAME) { | |
320 | iname = gen->d.directoryName; | |
321 | break; | |
322 | } | |
323 | } | |
324 | if (!iname) | |
325 | iname = X509_get_issuer_name(x); | |
326 | ||
7e06a675 | 327 | return DIST_POINT_set_dpname(dp->distpoint, iname); |
0f113f3e | 328 | } |
3e727a3b | 329 | |
7e06a675 | 330 | static int setup_crldp(X509 *x) |
0f113f3e MC |
331 | { |
332 | int i; | |
7e06a675 BE |
333 | |
334 | x->crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, &i, NULL); | |
335 | if (x->crldp == NULL && i != -1) | |
336 | return 0; | |
337 | for (i = 0; i < sk_DIST_POINT_num(x->crldp); i++) { | |
338 | if (!setup_dp(x, sk_DIST_POINT_value(x->crldp, i))) | |
339 | return 0; | |
340 | } | |
341 | return 1; | |
0f113f3e | 342 | } |
f1558bb4 | 343 | |
f51e5ed6 DSH |
344 | #define V1_ROOT (EXFLAG_V1|EXFLAG_SS) |
345 | #define ku_reject(x, usage) \ | |
346 | (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage))) | |
347 | #define xku_reject(x, usage) \ | |
348 | (((x)->ex_flags & EXFLAG_XKUSAGE) && !((x)->ex_xkusage & (usage))) | |
349 | #define ns_reject(x, usage) \ | |
350 | (((x)->ex_flags & EXFLAG_NSCERT) && !((x)->ex_nscert & (usage))) | |
351 | ||
33328581 | 352 | int X509v3_cache_extensions(X509 *x, OPENSSL_CTX *libctx, const char *propq) |
673b102c | 353 | { |
0f113f3e MC |
354 | BASIC_CONSTRAINTS *bs; |
355 | PROXY_CERT_INFO_EXTENSION *pci; | |
356 | ASN1_BIT_STRING *usage; | |
357 | ASN1_BIT_STRING *ns; | |
358 | EXTENDED_KEY_USAGE *extusage; | |
359 | X509_EXTENSION *ex; | |
0f113f3e | 360 | int i; |
33328581 | 361 | EVP_MD *sha1; |
bc624bd9 | 362 | |
7d38ca3f | 363 | #ifdef tsan_ld_acq |
f21b5b64 | 364 | /* fast lock-free check, see end of the function for details. */ |
7d38ca3f | 365 | if (tsan_ld_acq((TSAN_QUALIFIER int *)&x->ex_cached)) |
33328581 | 366 | return (x->ex_flags & EXFLAG_INVALID) == 0; |
7d38ca3f | 367 | #endif |
f21b5b64 | 368 | |
bc624bd9 DMSP |
369 | CRYPTO_THREAD_write_lock(x->lock); |
370 | if (x->ex_flags & EXFLAG_SET) { | |
371 | CRYPTO_THREAD_unlock(x->lock); | |
33328581 | 372 | return (x->ex_flags & EXFLAG_INVALID) == 0; |
bc624bd9 DMSP |
373 | } |
374 | ||
33328581 MC |
375 | sha1 = EVP_MD_fetch(libctx, "SHA1", propq); |
376 | if (sha1 == NULL || !X509_digest(x, sha1, x->sha1_hash, NULL)) | |
377 | x->ex_flags |= EXFLAG_INVALID; | |
378 | EVP_MD_free(sha1); | |
379 | ||
0f113f3e MC |
380 | /* V1 should mean no extensions ... */ |
381 | if (!X509_get_version(x)) | |
382 | x->ex_flags |= EXFLAG_V1; | |
383 | /* Handle basic constraints */ | |
7e06a675 | 384 | if ((bs = X509_get_ext_d2i(x, NID_basic_constraints, &i, NULL))) { |
0f113f3e MC |
385 | if (bs->ca) |
386 | x->ex_flags |= EXFLAG_CA; | |
387 | if (bs->pathlen) { | |
428cf5ff | 388 | if (bs->pathlen->type == V_ASN1_NEG_INTEGER) { |
0f113f3e MC |
389 | x->ex_flags |= EXFLAG_INVALID; |
390 | x->ex_pathlen = 0; | |
428cf5ff | 391 | } else { |
0f113f3e | 392 | x->ex_pathlen = ASN1_INTEGER_get(bs->pathlen); |
428cf5ff TM |
393 | if (!bs->ca && x->ex_pathlen != 0) { |
394 | x->ex_flags |= EXFLAG_INVALID; | |
395 | x->ex_pathlen = 0; | |
396 | } | |
397 | } | |
0f113f3e MC |
398 | } else |
399 | x->ex_pathlen = -1; | |
400 | BASIC_CONSTRAINTS_free(bs); | |
401 | x->ex_flags |= EXFLAG_BCONS; | |
7e06a675 BE |
402 | } else if (i != -1) { |
403 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e MC |
404 | } |
405 | /* Handle proxy certificates */ | |
7e06a675 | 406 | if ((pci = X509_get_ext_d2i(x, NID_proxyCertInfo, &i, NULL))) { |
0f113f3e MC |
407 | if (x->ex_flags & EXFLAG_CA |
408 | || X509_get_ext_by_NID(x, NID_subject_alt_name, -1) >= 0 | |
409 | || X509_get_ext_by_NID(x, NID_issuer_alt_name, -1) >= 0) { | |
410 | x->ex_flags |= EXFLAG_INVALID; | |
411 | } | |
412 | if (pci->pcPathLengthConstraint) { | |
413 | x->ex_pcpathlen = ASN1_INTEGER_get(pci->pcPathLengthConstraint); | |
414 | } else | |
415 | x->ex_pcpathlen = -1; | |
416 | PROXY_CERT_INFO_EXTENSION_free(pci); | |
417 | x->ex_flags |= EXFLAG_PROXY; | |
7e06a675 BE |
418 | } else if (i != -1) { |
419 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e MC |
420 | } |
421 | /* Handle key usage */ | |
7e06a675 | 422 | if ((usage = X509_get_ext_d2i(x, NID_key_usage, &i, NULL))) { |
0f113f3e MC |
423 | if (usage->length > 0) { |
424 | x->ex_kusage = usage->data[0]; | |
425 | if (usage->length > 1) | |
426 | x->ex_kusage |= usage->data[1] << 8; | |
427 | } else | |
428 | x->ex_kusage = 0; | |
429 | x->ex_flags |= EXFLAG_KUSAGE; | |
430 | ASN1_BIT_STRING_free(usage); | |
7e06a675 BE |
431 | } else if (i != -1) { |
432 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e MC |
433 | } |
434 | x->ex_xkusage = 0; | |
7e06a675 | 435 | if ((extusage = X509_get_ext_d2i(x, NID_ext_key_usage, &i, NULL))) { |
0f113f3e MC |
436 | x->ex_flags |= EXFLAG_XKUSAGE; |
437 | for (i = 0; i < sk_ASN1_OBJECT_num(extusage); i++) { | |
438 | switch (OBJ_obj2nid(sk_ASN1_OBJECT_value(extusage, i))) { | |
439 | case NID_server_auth: | |
440 | x->ex_xkusage |= XKU_SSL_SERVER; | |
441 | break; | |
442 | ||
443 | case NID_client_auth: | |
444 | x->ex_xkusage |= XKU_SSL_CLIENT; | |
445 | break; | |
446 | ||
447 | case NID_email_protect: | |
448 | x->ex_xkusage |= XKU_SMIME; | |
449 | break; | |
450 | ||
451 | case NID_code_sign: | |
452 | x->ex_xkusage |= XKU_CODE_SIGN; | |
453 | break; | |
454 | ||
455 | case NID_ms_sgc: | |
456 | case NID_ns_sgc: | |
457 | x->ex_xkusage |= XKU_SGC; | |
458 | break; | |
459 | ||
460 | case NID_OCSP_sign: | |
461 | x->ex_xkusage |= XKU_OCSP_SIGN; | |
462 | break; | |
463 | ||
464 | case NID_time_stamp: | |
465 | x->ex_xkusage |= XKU_TIMESTAMP; | |
466 | break; | |
467 | ||
468 | case NID_dvcs: | |
469 | x->ex_xkusage |= XKU_DVCS; | |
470 | break; | |
471 | ||
472 | case NID_anyExtendedKeyUsage: | |
473 | x->ex_xkusage |= XKU_ANYEKU; | |
474 | break; | |
475 | } | |
476 | } | |
477 | sk_ASN1_OBJECT_pop_free(extusage, ASN1_OBJECT_free); | |
7e06a675 BE |
478 | } else if (i != -1) { |
479 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e MC |
480 | } |
481 | ||
7e06a675 | 482 | if ((ns = X509_get_ext_d2i(x, NID_netscape_cert_type, &i, NULL))) { |
0f113f3e MC |
483 | if (ns->length > 0) |
484 | x->ex_nscert = ns->data[0]; | |
485 | else | |
486 | x->ex_nscert = 0; | |
487 | x->ex_flags |= EXFLAG_NSCERT; | |
488 | ASN1_BIT_STRING_free(ns); | |
7e06a675 BE |
489 | } else if (i != -1) { |
490 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e | 491 | } |
7e06a675 BE |
492 | x->skid = X509_get_ext_d2i(x, NID_subject_key_identifier, &i, NULL); |
493 | if (x->skid == NULL && i != -1) | |
494 | x->ex_flags |= EXFLAG_INVALID; | |
495 | x->akid = X509_get_ext_d2i(x, NID_authority_key_identifier, &i, NULL); | |
496 | if (x->akid == NULL && i != -1) | |
497 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e MC |
498 | /* Does subject name match issuer ? */ |
499 | if (!X509_NAME_cmp(X509_get_subject_name(x), X509_get_issuer_name(x))) { | |
500 | x->ex_flags |= EXFLAG_SI; | |
501 | /* If SKID matches AKID also indicate self signed */ | |
f51e5ed6 DSH |
502 | if (X509_check_akid(x, x->akid) == X509_V_OK && |
503 | !ku_reject(x, KU_KEY_CERT_SIGN)) | |
0f113f3e MC |
504 | x->ex_flags |= EXFLAG_SS; |
505 | } | |
7e06a675 BE |
506 | x->altname = X509_get_ext_d2i(x, NID_subject_alt_name, &i, NULL); |
507 | if (x->altname == NULL && i != -1) | |
508 | x->ex_flags |= EXFLAG_INVALID; | |
0f113f3e | 509 | x->nc = X509_get_ext_d2i(x, NID_name_constraints, &i, NULL); |
7e06a675 BE |
510 | if (x->nc == NULL && i != -1) |
511 | x->ex_flags |= EXFLAG_INVALID; | |
512 | if (!setup_crldp(x)) | |
0f113f3e | 513 | x->ex_flags |= EXFLAG_INVALID; |
d43c4497 | 514 | |
47bbaa5b | 515 | #ifndef OPENSSL_NO_RFC3779 |
7e06a675 BE |
516 | x->rfc3779_addr = X509_get_ext_d2i(x, NID_sbgp_ipAddrBlock, &i, NULL); |
517 | if (x->rfc3779_addr == NULL && i != -1) | |
518 | x->ex_flags |= EXFLAG_INVALID; | |
519 | x->rfc3779_asid = X509_get_ext_d2i(x, NID_sbgp_autonomousSysNum, &i, NULL); | |
520 | if (x->rfc3779_asid == NULL && i != -1) | |
521 | x->ex_flags |= EXFLAG_INVALID; | |
47bbaa5b | 522 | #endif |
0f113f3e MC |
523 | for (i = 0; i < X509_get_ext_count(x); i++) { |
524 | ex = X509_get_ext(x, i); | |
525 | if (OBJ_obj2nid(X509_EXTENSION_get_object(ex)) | |
526 | == NID_freshest_crl) | |
527 | x->ex_flags |= EXFLAG_FRESHEST; | |
528 | if (!X509_EXTENSION_get_critical(ex)) | |
529 | continue; | |
530 | if (!X509_supported_extension(ex)) { | |
531 | x->ex_flags |= EXFLAG_CRITICAL; | |
532 | break; | |
533 | } | |
534 | } | |
786dd2c2 | 535 | x509_init_sig_info(x); |
0f113f3e | 536 | x->ex_flags |= EXFLAG_SET; |
7d38ca3f AP |
537 | #ifdef tsan_st_rel |
538 | tsan_st_rel((TSAN_QUALIFIER int *)&x->ex_cached, 1); | |
f21b5b64 | 539 | /* |
7d38ca3f AP |
540 | * Above store triggers fast lock-free check in the beginning of the |
541 | * function. But one has to ensure that the structure is "stable", i.e. | |
542 | * all stores are visible on all processors. Hence the release fence. | |
f21b5b64 | 543 | */ |
7d38ca3f AP |
544 | #endif |
545 | CRYPTO_THREAD_unlock(x->lock); | |
33328581 MC |
546 | |
547 | return (x->ex_flags & EXFLAG_INVALID) == 0; | |
673b102c DSH |
548 | } |
549 | ||
1d97c843 TH |
550 | /*- |
551 | * CA checks common to all purposes | |
673b102c DSH |
552 | * return codes: |
553 | * 0 not a CA | |
554 | * 1 is a CA | |
555 | * 2 basicConstraints absent so "maybe" a CA | |
556 | * 3 basicConstraints absent but self signed V1. | |
bc501570 | 557 | * 4 basicConstraints absent but keyUsage present and keyCertSign asserted. |
673b102c DSH |
558 | */ |
559 | ||
5073ff03 | 560 | static int check_ca(const X509 *x) |
673b102c | 561 | { |
0f113f3e MC |
562 | /* keyUsage if present should allow cert signing */ |
563 | if (ku_reject(x, KU_KEY_CERT_SIGN)) | |
564 | return 0; | |
565 | if (x->ex_flags & EXFLAG_BCONS) { | |
566 | if (x->ex_flags & EXFLAG_CA) | |
567 | return 1; | |
568 | /* If basicConstraints says not a CA then say so */ | |
569 | else | |
570 | return 0; | |
571 | } else { | |
572 | /* we support V1 roots for... uh, I don't really know why. */ | |
573 | if ((x->ex_flags & V1_ROOT) == V1_ROOT) | |
574 | return 3; | |
575 | /* | |
576 | * If key usage present it must have certSign so tolerate it | |
577 | */ | |
578 | else if (x->ex_flags & EXFLAG_KUSAGE) | |
579 | return 4; | |
580 | /* Older certificates could have Netscape-specific CA types */ | |
581 | else if (x->ex_flags & EXFLAG_NSCERT && x->ex_nscert & NS_ANY_CA) | |
582 | return 5; | |
583 | /* can this still be regarded a CA certificate? I doubt it */ | |
584 | return 0; | |
585 | } | |
673b102c DSH |
586 | } |
587 | ||
9961cb77 RL |
588 | void X509_set_proxy_flag(X509 *x) |
589 | { | |
590 | x->ex_flags |= EXFLAG_PROXY; | |
591 | } | |
592 | ||
fe0169b0 RL |
593 | void X509_set_proxy_pathlen(X509 *x, long l) |
594 | { | |
595 | x->ex_pcpathlen = l; | |
596 | } | |
597 | ||
5073ff03 RL |
598 | int X509_check_ca(X509 *x) |
599 | { | |
33328581 MC |
600 | /* Note 0 normally means "not a CA" - but in this case means error. */ |
601 | if (!X509v3_cache_extensions(x, NULL, NULL)) | |
602 | return 0; | |
5073ff03 | 603 | |
0f113f3e | 604 | return check_ca(x); |
5073ff03 RL |
605 | } |
606 | ||
0cb957a6 | 607 | /* Check SSL CA: common checks for SSL client and server */ |
ccd86b68 | 608 | static int check_ssl_ca(const X509 *x) |
0cb957a6 | 609 | { |
0f113f3e MC |
610 | int ca_ret; |
611 | ca_ret = check_ca(x); | |
612 | if (!ca_ret) | |
613 | return 0; | |
614 | /* check nsCertType if present */ | |
615 | if (ca_ret != 5 || x->ex_nscert & NS_SSL_CA) | |
616 | return ca_ret; | |
617 | else | |
618 | return 0; | |
0cb957a6 | 619 | } |
8cff6331 | 620 | |
0f113f3e MC |
621 | static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x, |
622 | int ca) | |
673b102c | 623 | { |
0f113f3e MC |
624 | if (xku_reject(x, XKU_SSL_CLIENT)) |
625 | return 0; | |
626 | if (ca) | |
627 | return check_ssl_ca(x); | |
628 | /* We need to do digital signatures or key agreement */ | |
629 | if (ku_reject(x, KU_DIGITAL_SIGNATURE | KU_KEY_AGREEMENT)) | |
630 | return 0; | |
631 | /* nsCertType if present should allow SSL client use */ | |
632 | if (ns_reject(x, NS_SSL_CLIENT)) | |
633 | return 0; | |
634 | return 1; | |
673b102c | 635 | } |
0f113f3e MC |
636 | |
637 | /* | |
638 | * Key usage needed for TLS/SSL server: digital signature, encipherment or | |
7568d15a DSH |
639 | * key agreement. The ssl code can check this more thoroughly for individual |
640 | * key types. | |
641 | */ | |
642 | #define KU_TLS \ | |
0f113f3e | 643 | KU_DIGITAL_SIGNATURE|KU_KEY_ENCIPHERMENT|KU_KEY_AGREEMENT |
673b102c | 644 | |
0f113f3e MC |
645 | static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x, |
646 | int ca) | |
673b102c | 647 | { |
0f113f3e MC |
648 | if (xku_reject(x, XKU_SSL_SERVER | XKU_SGC)) |
649 | return 0; | |
650 | if (ca) | |
651 | return check_ssl_ca(x); | |
652 | ||
653 | if (ns_reject(x, NS_SSL_SERVER)) | |
654 | return 0; | |
655 | if (ku_reject(x, KU_TLS)) | |
656 | return 0; | |
673b102c | 657 | |
0f113f3e | 658 | return 1; |
673b102c DSH |
659 | |
660 | } | |
661 | ||
0f113f3e MC |
662 | static int check_purpose_ns_ssl_server(const X509_PURPOSE *xp, const X509 *x, |
663 | int ca) | |
673b102c | 664 | { |
0f113f3e MC |
665 | int ret; |
666 | ret = check_purpose_ssl_server(xp, x, ca); | |
667 | if (!ret || ca) | |
668 | return ret; | |
669 | /* We need to encipher or Netscape complains */ | |
670 | if (ku_reject(x, KU_KEY_ENCIPHERMENT)) | |
671 | return 0; | |
672 | return ret; | |
673b102c DSH |
673 | } |
674 | ||
675 | /* common S/MIME checks */ | |
ccd86b68 | 676 | static int purpose_smime(const X509 *x, int ca) |
673b102c | 677 | { |
0f113f3e MC |
678 | if (xku_reject(x, XKU_SMIME)) |
679 | return 0; | |
680 | if (ca) { | |
681 | int ca_ret; | |
682 | ca_ret = check_ca(x); | |
683 | if (!ca_ret) | |
684 | return 0; | |
685 | /* check nsCertType if present */ | |
686 | if (ca_ret != 5 || x->ex_nscert & NS_SMIME_CA) | |
687 | return ca_ret; | |
688 | else | |
689 | return 0; | |
690 | } | |
691 | if (x->ex_flags & EXFLAG_NSCERT) { | |
692 | if (x->ex_nscert & NS_SMIME) | |
693 | return 1; | |
694 | /* Workaround for some buggy certificates */ | |
695 | if (x->ex_nscert & NS_SSL_CLIENT) | |
696 | return 2; | |
697 | return 0; | |
698 | } | |
699 | return 1; | |
673b102c DSH |
700 | } |
701 | ||
0f113f3e MC |
702 | static int check_purpose_smime_sign(const X509_PURPOSE *xp, const X509 *x, |
703 | int ca) | |
673b102c | 704 | { |
0f113f3e MC |
705 | int ret; |
706 | ret = purpose_smime(x, ca); | |
707 | if (!ret || ca) | |
708 | return ret; | |
709 | if (ku_reject(x, KU_DIGITAL_SIGNATURE | KU_NON_REPUDIATION)) | |
710 | return 0; | |
711 | return ret; | |
673b102c DSH |
712 | } |
713 | ||
0f113f3e MC |
714 | static int check_purpose_smime_encrypt(const X509_PURPOSE *xp, const X509 *x, |
715 | int ca) | |
673b102c | 716 | { |
0f113f3e MC |
717 | int ret; |
718 | ret = purpose_smime(x, ca); | |
719 | if (!ret || ca) | |
720 | return ret; | |
721 | if (ku_reject(x, KU_KEY_ENCIPHERMENT)) | |
722 | return 0; | |
723 | return ret; | |
673b102c DSH |
724 | } |
725 | ||
0f113f3e MC |
726 | static int check_purpose_crl_sign(const X509_PURPOSE *xp, const X509 *x, |
727 | int ca) | |
673b102c | 728 | { |
0f113f3e MC |
729 | if (ca) { |
730 | int ca_ret; | |
731 | if ((ca_ret = check_ca(x)) != 2) | |
732 | return ca_ret; | |
733 | else | |
734 | return 0; | |
735 | } | |
736 | if (ku_reject(x, KU_CRL_SIGN)) | |
737 | return 0; | |
738 | return 1; | |
673b102c | 739 | } |
068fdce8 | 740 | |
0f113f3e MC |
741 | /* |
742 | * OCSP helper: this is *not* a full OCSP check. It just checks that each CA | |
743 | * is valid. Additional checks must be made on the chain. | |
81f169e9 DSH |
744 | */ |
745 | ||
746 | static int ocsp_helper(const X509_PURPOSE *xp, const X509 *x, int ca) | |
747 | { | |
0f113f3e MC |
748 | /* |
749 | * Must be a valid CA. Should we really support the "I don't know" value | |
750 | * (2)? | |
751 | */ | |
752 | if (ca) | |
753 | return check_ca(x); | |
754 | /* leaf certificate is checked in OCSP_verify() */ | |
755 | return 1; | |
81f169e9 DSH |
756 | } |
757 | ||
c7235be6 | 758 | static int check_purpose_timestamp_sign(const X509_PURPOSE *xp, const X509 *x, |
0f113f3e | 759 | int ca) |
c7235be6 | 760 | { |
0f113f3e MC |
761 | int i_ext; |
762 | ||
763 | /* If ca is true we must return if this is a valid CA certificate. */ | |
764 | if (ca) | |
765 | return check_ca(x); | |
766 | ||
767 | /* | |
768 | * Check the optional key usage field: | |
769 | * if Key Usage is present, it must be one of digitalSignature | |
770 | * and/or nonRepudiation (other values are not consistent and shall | |
771 | * be rejected). | |
772 | */ | |
773 | if ((x->ex_flags & EXFLAG_KUSAGE) | |
774 | && ((x->ex_kusage & ~(KU_NON_REPUDIATION | KU_DIGITAL_SIGNATURE)) || | |
775 | !(x->ex_kusage & (KU_NON_REPUDIATION | KU_DIGITAL_SIGNATURE)))) | |
776 | return 0; | |
777 | ||
778 | /* Only time stamp key usage is permitted and it's required. */ | |
779 | if (!(x->ex_flags & EXFLAG_XKUSAGE) || x->ex_xkusage != XKU_TIMESTAMP) | |
780 | return 0; | |
781 | ||
782 | /* Extended Key Usage MUST be critical */ | |
7569362e | 783 | i_ext = X509_get_ext_by_NID(x, NID_ext_key_usage, -1); |
0f113f3e MC |
784 | if (i_ext >= 0) { |
785 | X509_EXTENSION *ext = X509_get_ext((X509 *)x, i_ext); | |
786 | if (!X509_EXTENSION_get_critical(ext)) | |
787 | return 0; | |
788 | } | |
789 | ||
790 | return 1; | |
c7235be6 UM |
791 | } |
792 | ||
ccd86b68 | 793 | static int no_check(const X509_PURPOSE *xp, const X509 *x, int ca) |
068fdce8 | 794 | { |
0f113f3e | 795 | return 1; |
068fdce8 | 796 | } |
2f043896 | 797 | |
1d97c843 TH |
798 | /*- |
799 | * Various checks to see if one certificate issued the second. | |
2f043896 DSH |
800 | * This can be used to prune a set of possible issuer certificates |
801 | * which have been looked up using some simple method such as by | |
802 | * subject name. | |
803 | * These are: | |
804 | * 1. Check issuer_name(subject) == subject_name(issuer) | |
ffd2df13 RL |
805 | * 2. If akid(subject) exists, check that it matches issuer |
806 | * 3. Check that issuer public key algorithm matches subject signature algorithm | |
807 | * 4. If key_usage(issuer) exists, check that it supports certificate signing | |
2f043896 DSH |
808 | * returns 0 for OK, positive for reason for mismatch, reasons match |
809 | * codes for X509_verify_cert() | |
810 | */ | |
811 | ||
812 | int X509_check_issued(X509 *issuer, X509 *subject) | |
813 | { | |
0f113f3e MC |
814 | if (X509_NAME_cmp(X509_get_subject_name(issuer), |
815 | X509_get_issuer_name(subject))) | |
816 | return X509_V_ERR_SUBJECT_ISSUER_MISMATCH; | |
bc624bd9 | 817 | |
33328581 MC |
818 | if (!X509v3_cache_extensions(issuer, NULL, NULL) |
819 | || !X509v3_cache_extensions(subject, NULL, NULL)) | |
7e06a675 | 820 | return X509_V_ERR_UNSPECIFIED; |
0f113f3e MC |
821 | |
822 | if (subject->akid) { | |
823 | int ret = X509_check_akid(issuer, subject->akid); | |
824 | if (ret != X509_V_OK) | |
825 | return ret; | |
826 | } | |
827 | ||
ffd2df13 RL |
828 | { |
829 | /* | |
830 | * Check if the subject signature algorithm matches the issuer's PUBKEY | |
831 | * algorithm | |
832 | */ | |
833 | EVP_PKEY *i_pkey = X509_get0_pubkey(issuer); | |
834 | X509_ALGOR *s_algor = &subject->cert_info.signature; | |
835 | int s_pknid = NID_undef, s_mdnid = NID_undef; | |
836 | ||
837 | if (i_pkey == NULL) | |
838 | return X509_V_ERR_NO_ISSUER_PUBLIC_KEY; | |
839 | ||
840 | if (!OBJ_find_sigid_algs(OBJ_obj2nid(s_algor->algorithm), | |
841 | &s_mdnid, &s_pknid) | |
842 | || EVP_PKEY_type(s_pknid) != EVP_PKEY_base_id(i_pkey)) | |
843 | return X509_V_ERR_SIGNATURE_ALGORITHM_MISMATCH; | |
844 | } | |
845 | ||
0f113f3e MC |
846 | if (subject->ex_flags & EXFLAG_PROXY) { |
847 | if (ku_reject(issuer, KU_DIGITAL_SIGNATURE)) | |
848 | return X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE; | |
849 | } else if (ku_reject(issuer, KU_KEY_CERT_SIGN)) | |
850 | return X509_V_ERR_KEYUSAGE_NO_CERTSIGN; | |
851 | return X509_V_OK; | |
2f043896 DSH |
852 | } |
853 | ||
bc7535bc | 854 | int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid) |
0f113f3e | 855 | { |
bc7535bc | 856 | |
0f113f3e MC |
857 | if (!akid) |
858 | return X509_V_OK; | |
859 | ||
860 | /* Check key ids (if present) */ | |
861 | if (akid->keyid && issuer->skid && | |
862 | ASN1_OCTET_STRING_cmp(akid->keyid, issuer->skid)) | |
863 | return X509_V_ERR_AKID_SKID_MISMATCH; | |
864 | /* Check serial number */ | |
865 | if (akid->serial && | |
866 | ASN1_INTEGER_cmp(X509_get_serialNumber(issuer), akid->serial)) | |
867 | return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH; | |
868 | /* Check issuer name */ | |
869 | if (akid->issuer) { | |
870 | /* | |
871 | * Ugh, for some peculiar reason AKID includes SEQUENCE OF | |
872 | * GeneralName. So look for a DirName. There may be more than one but | |
873 | * we only take any notice of the first. | |
874 | */ | |
875 | GENERAL_NAMES *gens; | |
876 | GENERAL_NAME *gen; | |
877 | X509_NAME *nm = NULL; | |
878 | int i; | |
879 | gens = akid->issuer; | |
880 | for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) { | |
881 | gen = sk_GENERAL_NAME_value(gens, i); | |
882 | if (gen->type == GEN_DIRNAME) { | |
883 | nm = gen->d.dirn; | |
884 | break; | |
885 | } | |
886 | } | |
887 | if (nm && X509_NAME_cmp(nm, X509_get_issuer_name(issuer))) | |
888 | return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH; | |
889 | } | |
890 | return X509_V_OK; | |
891 | } | |
063f1f0c DSH |
892 | |
893 | uint32_t X509_get_extension_flags(X509 *x) | |
894 | { | |
109f8b5d | 895 | /* Call for side-effect of computing hash and caching extensions */ |
063f1f0c DSH |
896 | X509_check_purpose(x, -1, -1); |
897 | return x->ex_flags; | |
898 | } | |
899 | ||
900 | uint32_t X509_get_key_usage(X509 *x) | |
901 | { | |
109f8b5d | 902 | /* Call for side-effect of computing hash and caching extensions */ |
7e06a675 BE |
903 | if (X509_check_purpose(x, -1, -1) != 1) |
904 | return 0; | |
063f1f0c DSH |
905 | if (x->ex_flags & EXFLAG_KUSAGE) |
906 | return x->ex_kusage; | |
907 | return UINT32_MAX; | |
908 | } | |
909 | ||
910 | uint32_t X509_get_extended_key_usage(X509 *x) | |
911 | { | |
109f8b5d | 912 | /* Call for side-effect of computing hash and caching extensions */ |
7e06a675 BE |
913 | if (X509_check_purpose(x, -1, -1) != 1) |
914 | return 0; | |
063f1f0c DSH |
915 | if (x->ex_flags & EXFLAG_XKUSAGE) |
916 | return x->ex_xkusage; | |
917 | return UINT32_MAX; | |
918 | } | |
d19a50c9 DSH |
919 | |
920 | const ASN1_OCTET_STRING *X509_get0_subject_key_id(X509 *x) | |
921 | { | |
109f8b5d | 922 | /* Call for side-effect of computing hash and caching extensions */ |
7e06a675 BE |
923 | if (X509_check_purpose(x, -1, -1) != 1) |
924 | return NULL; | |
d19a50c9 DSH |
925 | return x->skid; |
926 | } | |
e417070c | 927 | |
b383aa20 MP |
928 | const ASN1_OCTET_STRING *X509_get0_authority_key_id(X509 *x) |
929 | { | |
930 | /* Call for side-effect of computing hash and caching extensions */ | |
7e06a675 BE |
931 | if (X509_check_purpose(x, -1, -1) != 1) |
932 | return NULL; | |
b383aa20 MP |
933 | return (x->akid != NULL ? x->akid->keyid : NULL); |
934 | } | |
935 | ||
afdec13d DMSP |
936 | const GENERAL_NAMES *X509_get0_authority_issuer(X509 *x) |
937 | { | |
938 | /* Call for side-effect of computing hash and caching extensions */ | |
7e06a675 BE |
939 | if (X509_check_purpose(x, -1, -1) != 1) |
940 | return NULL; | |
afdec13d DMSP |
941 | return (x->akid != NULL ? x->akid->issuer : NULL); |
942 | } | |
943 | ||
944 | const ASN1_INTEGER *X509_get0_authority_serial(X509 *x) | |
945 | { | |
946 | /* Call for side-effect of computing hash and caching extensions */ | |
7e06a675 BE |
947 | if (X509_check_purpose(x, -1, -1) != 1) |
948 | return NULL; | |
afdec13d DMSP |
949 | return (x->akid != NULL ? x->akid->serial : NULL); |
950 | } | |
951 | ||
e417070c RS |
952 | long X509_get_pathlen(X509 *x) |
953 | { | |
954 | /* Called for side effect of caching extensions */ | |
955 | if (X509_check_purpose(x, -1, -1) != 1 | |
956 | || (x->ex_flags & EXFLAG_BCONS) == 0) | |
957 | return -1; | |
958 | return x->ex_pathlen; | |
959 | } | |
fe0169b0 RL |
960 | |
961 | long X509_get_proxy_pathlen(X509 *x) | |
962 | { | |
963 | /* Called for side effect of caching extensions */ | |
964 | if (X509_check_purpose(x, -1, -1) != 1 | |
965 | || (x->ex_flags & EXFLAG_PROXY) == 0) | |
966 | return -1; | |
967 | return x->ex_pcpathlen; | |
968 | } |