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diff --git a/src/lib/libcrypto/x509/x509_lu.c b/src/lib/libcrypto/x509/x509_lu.c
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1/* crypto/x509/x509_lu.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include "cryptlib.h"
61#include <openssl/lhash.h>
62#include <openssl/x509.h>
63#include <openssl/x509v3.h>
64
65X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method)
66 {
67 X509_LOOKUP *ret;
68
69 ret=(X509_LOOKUP *)OPENSSL_malloc(sizeof(X509_LOOKUP));
70 if (ret == NULL) return NULL;
71
72 ret->init=0;
73 ret->skip=0;
74 ret->method=method;
75 ret->method_data=NULL;
76 ret->store_ctx=NULL;
77 if ((method->new_item != NULL) && !method->new_item(ret))
78 {
79 OPENSSL_free(ret);
80 return NULL;
81 }
82 return ret;
83 }
84
85void X509_LOOKUP_free(X509_LOOKUP *ctx)
86 {
87 if (ctx == NULL) return;
88 if ( (ctx->method != NULL) &&
89 (ctx->method->free != NULL))
90 ctx->method->free(ctx);
91 OPENSSL_free(ctx);
92 }
93
94int X509_LOOKUP_init(X509_LOOKUP *ctx)
95 {
96 if (ctx->method == NULL) return 0;
97 if (ctx->method->init != NULL)
98 return ctx->method->init(ctx);
99 else
100 return 1;
101 }
102
103int X509_LOOKUP_shutdown(X509_LOOKUP *ctx)
104 {
105 if (ctx->method == NULL) return 0;
106 if (ctx->method->shutdown != NULL)
107 return ctx->method->shutdown(ctx);
108 else
109 return 1;
110 }
111
112int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
113 char **ret)
114 {
115 if (ctx->method == NULL) return -1;
116 if (ctx->method->ctrl != NULL)
117 return ctx->method->ctrl(ctx,cmd,argc,argl,ret);
118 else
119 return 1;
120 }
121
122int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
123 X509_OBJECT *ret)
124 {
125 if ((ctx->method == NULL) || (ctx->method->get_by_subject == NULL))
126 return X509_LU_FAIL;
127 if (ctx->skip) return 0;
128 return ctx->method->get_by_subject(ctx,type,name,ret);
129 }
130
131int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
132 ASN1_INTEGER *serial, X509_OBJECT *ret)
133 {
134 if ((ctx->method == NULL) ||
135 (ctx->method->get_by_issuer_serial == NULL))
136 return X509_LU_FAIL;
137 return ctx->method->get_by_issuer_serial(ctx,type,name,serial,ret);
138 }
139
140int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
141 unsigned char *bytes, int len, X509_OBJECT *ret)
142 {
143 if ((ctx->method == NULL) || (ctx->method->get_by_fingerprint == NULL))
144 return X509_LU_FAIL;
145 return ctx->method->get_by_fingerprint(ctx,type,bytes,len,ret);
146 }
147
148int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str, int len,
149 X509_OBJECT *ret)
150 {
151 if ((ctx->method == NULL) || (ctx->method->get_by_alias == NULL))
152 return X509_LU_FAIL;
153 return ctx->method->get_by_alias(ctx,type,str,len,ret);
154 }
155
156
157static int x509_object_cmp(const X509_OBJECT * const *a, const X509_OBJECT * const *b)
158 {
159 int ret;
160
161 ret=((*a)->type - (*b)->type);
162 if (ret) return ret;
163 switch ((*a)->type)
164 {
165 case X509_LU_X509:
166 ret=X509_subject_name_cmp((*a)->data.x509,(*b)->data.x509);
167 break;
168 case X509_LU_CRL:
169 ret=X509_CRL_cmp((*a)->data.crl,(*b)->data.crl);
170 break;
171 default:
172 /* abort(); */
173 return 0;
174 }
175 return ret;
176 }
177
178X509_STORE *X509_STORE_new(void)
179 {
180 X509_STORE *ret;
181
182 if ((ret=(X509_STORE *)OPENSSL_malloc(sizeof(X509_STORE))) == NULL)
183 return NULL;
184 ret->objs = sk_X509_OBJECT_new(x509_object_cmp);
185 ret->cache=1;
186 ret->get_cert_methods=sk_X509_LOOKUP_new_null();
187 ret->verify=0;
188 ret->verify_cb=0;
189
190 ret->purpose = 0;
191 ret->trust = 0;
192
193 ret->flags = 0;
194
195 ret->get_issuer = 0;
196 ret->check_issued = 0;
197 ret->check_revocation = 0;
198 ret->get_crl = 0;
199 ret->check_crl = 0;
200 ret->cert_crl = 0;
201 ret->cleanup = 0;
202
203 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509_STORE, ret, &ret->ex_data);
204 ret->references=1;
205 ret->depth=0;
206 return ret;
207 }
208
209static void cleanup(X509_OBJECT *a)
210 {
211 if (a->type == X509_LU_X509)
212 {
213 X509_free(a->data.x509);
214 }
215 else if (a->type == X509_LU_CRL)
216 {
217 X509_CRL_free(a->data.crl);
218 }
219 else
220 {
221 /* abort(); */
222 }
223
224 OPENSSL_free(a);
225 }
226
227void X509_STORE_free(X509_STORE *vfy)
228 {
229 int i;
230 STACK_OF(X509_LOOKUP) *sk;
231 X509_LOOKUP *lu;
232
233 if (vfy == NULL)
234 return;
235
236 sk=vfy->get_cert_methods;
237 for (i=0; i<sk_X509_LOOKUP_num(sk); i++)
238 {
239 lu=sk_X509_LOOKUP_value(sk,i);
240 X509_LOOKUP_shutdown(lu);
241 X509_LOOKUP_free(lu);
242 }
243 sk_X509_LOOKUP_free(sk);
244 sk_X509_OBJECT_pop_free(vfy->objs, cleanup);
245
246 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509_STORE, vfy, &vfy->ex_data);
247 OPENSSL_free(vfy);
248 }
249
250X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m)
251 {
252 int i;
253 STACK_OF(X509_LOOKUP) *sk;
254 X509_LOOKUP *lu;
255
256 sk=v->get_cert_methods;
257 for (i=0; i<sk_X509_LOOKUP_num(sk); i++)
258 {
259 lu=sk_X509_LOOKUP_value(sk,i);
260 if (m == lu->method)
261 {
262 return lu;
263 }
264 }
265 /* a new one */
266 lu=X509_LOOKUP_new(m);
267 if (lu == NULL)
268 return NULL;
269 else
270 {
271 lu->store_ctx=v;
272 if (sk_X509_LOOKUP_push(v->get_cert_methods,lu))
273 return lu;
274 else
275 {
276 X509_LOOKUP_free(lu);
277 return NULL;
278 }
279 }
280 }
281
282int X509_STORE_get_by_subject(X509_STORE_CTX *vs, int type, X509_NAME *name,
283 X509_OBJECT *ret)
284 {
285 X509_STORE *ctx=vs->ctx;
286 X509_LOOKUP *lu;
287 X509_OBJECT stmp,*tmp;
288 int i,j;
289
290 tmp=X509_OBJECT_retrieve_by_subject(ctx->objs,type,name);
291
292 if (tmp == NULL)
293 {
294 for (i=vs->current_method; i<sk_X509_LOOKUP_num(ctx->get_cert_methods); i++)
295 {
296 lu=sk_X509_LOOKUP_value(ctx->get_cert_methods,i);
297 j=X509_LOOKUP_by_subject(lu,type,name,&stmp);
298 if (j < 0)
299 {
300 vs->current_method=j;
301 return j;
302 }
303 else if (j)
304 {
305 tmp= &stmp;
306 break;
307 }
308 }
309 vs->current_method=0;
310 if (tmp == NULL)
311 return 0;
312 }
313
314/* if (ret->data.ptr != NULL)
315 X509_OBJECT_free_contents(ret); */
316
317 ret->type=tmp->type;
318 ret->data.ptr=tmp->data.ptr;
319
320 X509_OBJECT_up_ref_count(ret);
321
322 return 1;
323 }
324
325int X509_STORE_add_cert(X509_STORE *ctx, X509 *x)
326 {
327 X509_OBJECT *obj;
328 int ret=1;
329
330 if (x == NULL) return 0;
331 obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
332 if (obj == NULL)
333 {
334 X509err(X509_F_X509_STORE_ADD_CERT,ERR_R_MALLOC_FAILURE);
335 return 0;
336 }
337 obj->type=X509_LU_X509;
338 obj->data.x509=x;
339
340 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
341
342 X509_OBJECT_up_ref_count(obj);
343
344
345 if (X509_OBJECT_retrieve_match(ctx->objs, obj))
346 {
347 X509_OBJECT_free_contents(obj);
348 OPENSSL_free(obj);
349 X509err(X509_F_X509_STORE_ADD_CERT,X509_R_CERT_ALREADY_IN_HASH_TABLE);
350 ret=0;
351 }
352 else sk_X509_OBJECT_push(ctx->objs, obj);
353
354 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
355
356 return ret;
357 }
358
359int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x)
360 {
361 X509_OBJECT *obj;
362 int ret=1;
363
364 if (x == NULL) return 0;
365 obj=(X509_OBJECT *)OPENSSL_malloc(sizeof(X509_OBJECT));
366 if (obj == NULL)
367 {
368 X509err(X509_F_X509_STORE_ADD_CRL,ERR_R_MALLOC_FAILURE);
369 return 0;
370 }
371 obj->type=X509_LU_CRL;
372 obj->data.crl=x;
373
374 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
375
376 X509_OBJECT_up_ref_count(obj);
377
378 if (X509_OBJECT_retrieve_match(ctx->objs, obj))
379 {
380 X509_OBJECT_free_contents(obj);
381 OPENSSL_free(obj);
382 X509err(X509_F_X509_STORE_ADD_CRL,X509_R_CERT_ALREADY_IN_HASH_TABLE);
383 ret=0;
384 }
385 else sk_X509_OBJECT_push(ctx->objs, obj);
386
387 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
388
389 return ret;
390 }
391
392void X509_OBJECT_up_ref_count(X509_OBJECT *a)
393 {
394 switch (a->type)
395 {
396 case X509_LU_X509:
397 CRYPTO_add(&a->data.x509->references,1,CRYPTO_LOCK_X509);
398 break;
399 case X509_LU_CRL:
400 CRYPTO_add(&a->data.crl->references,1,CRYPTO_LOCK_X509_CRL);
401 break;
402 }
403 }
404
405void X509_OBJECT_free_contents(X509_OBJECT *a)
406 {
407 switch (a->type)
408 {
409 case X509_LU_X509:
410 X509_free(a->data.x509);
411 break;
412 case X509_LU_CRL:
413 X509_CRL_free(a->data.crl);
414 break;
415 }
416 }
417
418int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
419 X509_NAME *name)
420 {
421 X509_OBJECT stmp;
422 X509 x509_s;
423 X509_CINF cinf_s;
424 X509_CRL crl_s;
425 X509_CRL_INFO crl_info_s;
426
427 stmp.type=type;
428 switch (type)
429 {
430 case X509_LU_X509:
431 stmp.data.x509= &x509_s;
432 x509_s.cert_info= &cinf_s;
433 cinf_s.subject=name;
434 break;
435 case X509_LU_CRL:
436 stmp.data.crl= &crl_s;
437 crl_s.crl= &crl_info_s;
438 crl_info_s.issuer=name;
439 break;
440 default:
441 /* abort(); */
442 return -1;
443 }
444
445 return sk_X509_OBJECT_find(h,&stmp);
446 }
447
448X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h, int type,
449 X509_NAME *name)
450{
451 int idx;
452 idx = X509_OBJECT_idx_by_subject(h, type, name);
453 if (idx==-1) return NULL;
454 return sk_X509_OBJECT_value(h, idx);
455}
456
457X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x)
458{
459 int idx, i;
460 X509_OBJECT *obj;
461 idx = sk_X509_OBJECT_find(h, x);
462 if (idx == -1) return NULL;
463 if (x->type != X509_LU_X509) return sk_X509_OBJECT_value(h, idx);
464 for (i = idx; i < sk_X509_OBJECT_num(h); i++)
465 {
466 obj = sk_X509_OBJECT_value(h, i);
467 if (x509_object_cmp((const X509_OBJECT **)&obj, (const X509_OBJECT **)&x))
468 return NULL;
469 if ((x->type != X509_LU_X509) || !X509_cmp(obj->data.x509, x->data.x509))
470 return obj;
471 }
472 return NULL;
473}
474
475
476/* Try to get issuer certificate from store. Due to limitations
477 * of the API this can only retrieve a single certificate matching
478 * a given subject name. However it will fill the cache with all
479 * matching certificates, so we can examine the cache for all
480 * matches.
481 *
482 * Return values are:
483 * 1 lookup successful.
484 * 0 certificate not found.
485 * -1 some other error.
486 */
487
488
489int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
490{
491 X509_NAME *xn;
492 X509_OBJECT obj, *pobj;
493 int i, ok, idx;
494 xn=X509_get_issuer_name(x);
495 ok=X509_STORE_get_by_subject(ctx,X509_LU_X509,xn,&obj);
496 if (ok != X509_LU_X509)
497 {
498 if (ok == X509_LU_RETRY)
499 {
500 X509_OBJECT_free_contents(&obj);
501 X509err(X509_F_X509_VERIFY_CERT,X509_R_SHOULD_RETRY);
502 return -1;
503 }
504 else if (ok != X509_LU_FAIL)
505 {
506 X509_OBJECT_free_contents(&obj);
507 /* not good :-(, break anyway */
508 return -1;
509 }
510 return 0;
511 }
512 /* If certificate matches all OK */
513 if (ctx->check_issued(ctx, x, obj.data.x509))
514 {
515 *issuer = obj.data.x509;
516 return 1;
517 }
518 X509_OBJECT_free_contents(&obj);
519 /* Else find index of first matching cert */
520 idx = X509_OBJECT_idx_by_subject(ctx->ctx->objs, X509_LU_X509, xn);
521 /* This shouldn't normally happen since we already have one match */
522 if (idx == -1) return 0;
523
524 /* Look through all matching certificates for a suitable issuer */
525 for (i = idx; i < sk_X509_OBJECT_num(ctx->ctx->objs); i++)
526 {
527 pobj = sk_X509_OBJECT_value(ctx->ctx->objs, i);
528 /* See if we've ran out of matches */
529 if (pobj->type != X509_LU_X509) return 0;
530 if (X509_NAME_cmp(xn, X509_get_subject_name(pobj->data.x509))) return 0;
531 if (ctx->check_issued(ctx, x, pobj->data.x509))
532 {
533 *issuer = pobj->data.x509;
534 X509_OBJECT_up_ref_count(pobj);
535 return 1;
536 }
537 }
538 return 0;
539}
540
541void X509_STORE_set_flags(X509_STORE *ctx, long flags)
542 {
543 ctx->flags |= flags;
544 }
545
546int X509_STORE_set_purpose(X509_STORE *ctx, int purpose)
547 {
548 return X509_PURPOSE_set(&ctx->purpose, purpose);
549 }
550
551int X509_STORE_set_trust(X509_STORE *ctx, int trust)
552 {
553 return X509_TRUST_set(&ctx->trust, trust);
554 }
555
556IMPLEMENT_STACK_OF(X509_LOOKUP)
557IMPLEMENT_STACK_OF(X509_OBJECT)
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