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diff --git a/src/lib/libcrypto/x509/x509_vfy.c b/src/lib/libcrypto/x509/x509_vfy.c
deleted file mode 100644
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--- a/src/lib/libcrypto/x509/x509_vfy.c
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1/* crypto/x509/x509_vfy.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 <time.h>
61#include <errno.h>
62#include <sys/types.h>
63#include <sys/stat.h>
64
65#include <openssl/crypto.h>
66#include "cryptlib.h"
67#include <openssl/lhash.h>
68#include <openssl/buffer.h>
69#include <openssl/evp.h>
70#include <openssl/asn1.h>
71#include <openssl/x509.h>
72#include <openssl/objects.h>
73
74static int null_callback(int ok,X509_STORE_CTX *e);
75static int internal_verify(X509_STORE_CTX *ctx);
76const char *X509_version="X.509" OPENSSL_VERSION_PTEXT;
77
78static STACK *x509_store_ctx_method=NULL;
79static int x509_store_ctx_num=0;
80#if 0
81static int x509_store_num=1;
82static STACK *x509_store_method=NULL;
83#endif
84
85static int null_callback(int ok, X509_STORE_CTX *e)
86 {
87 return(ok);
88 }
89
90#if 0
91static int x509_subject_cmp(X509 **a, X509 **b)
92 {
93 return(X509_subject_name_cmp(*a,*b));
94 }
95#endif
96
97int X509_verify_cert(X509_STORE_CTX *ctx)
98 {
99 X509 *x,*xtmp,*chain_ss=NULL;
100 X509_NAME *xn;
101 X509_OBJECT obj;
102 int depth,i,ok=0;
103 int num;
104 int (*cb)();
105 STACK_OF(X509) *sktmp=NULL;
106
107 if (ctx->cert == NULL)
108 {
109 X509err(X509_F_X509_VERIFY_CERT,X509_R_NO_CERT_SET_FOR_US_TO_VERIFY);
110 return(-1);
111 }
112
113 cb=ctx->ctx->verify_cb;
114 if (cb == NULL) cb=null_callback;
115
116 /* first we make sure the chain we are going to build is
117 * present and that the first entry is in place */
118 if (ctx->chain == NULL)
119 {
120 if ( ((ctx->chain=sk_X509_new_null()) == NULL) ||
121 (!sk_X509_push(ctx->chain,ctx->cert)))
122 {
123 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
124 goto end;
125 }
126 CRYPTO_add(&ctx->cert->references,1,CRYPTO_LOCK_X509);
127 ctx->last_untrusted=1;
128 }
129
130 /* We use a temporary so we can chop and hack at it */
131 if (ctx->untrusted != NULL
132 && (sktmp=sk_X509_dup(ctx->untrusted)) == NULL)
133 {
134 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
135 goto end;
136 }
137
138 num=sk_X509_num(ctx->chain);
139 x=sk_X509_value(ctx->chain,num-1);
140 depth=ctx->depth;
141
142
143 for (;;)
144 {
145 /* If we have enough, we break */
146 if (depth < num) break; /* FIXME: If this happens, we should take
147 * note of it and, if appropriate, use the
148 * X509_V_ERR_CERT_CHAIN_TOO_LONG error
149 * code later.
150 */
151
152 /* If we are self signed, we break */
153 xn=X509_get_issuer_name(x);
154 if (X509_NAME_cmp(X509_get_subject_name(x),xn) == 0)
155 break;
156
157 /* If we were passed a cert chain, use it first */
158 if (ctx->untrusted != NULL)
159 {
160 xtmp=X509_find_by_subject(sktmp,xn);
161 if (xtmp != NULL)
162 {
163 if (!sk_X509_push(ctx->chain,xtmp))
164 {
165 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
166 goto end;
167 }
168 CRYPTO_add(&xtmp->references,1,CRYPTO_LOCK_X509);
169 sk_X509_delete_ptr(sktmp,xtmp);
170 ctx->last_untrusted++;
171 x=xtmp;
172 num++;
173 /* reparse the full chain for
174 * the next one */
175 continue;
176 }
177 }
178 break;
179 }
180
181 /* at this point, chain should contain a list of untrusted
182 * certificates. We now need to add at least one trusted one,
183 * if possible, otherwise we complain. */
184
185 i=sk_X509_num(ctx->chain);
186 x=sk_X509_value(ctx->chain,i-1);
187 if (X509_NAME_cmp(X509_get_subject_name(x),X509_get_issuer_name(x))
188 == 0)
189 {
190 /* we have a self signed certificate */
191 if (sk_X509_num(ctx->chain) == 1)
192 {
193 ctx->error=X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT;
194 ctx->current_cert=x;
195 ctx->error_depth=i-1;
196 ok=cb(0,ctx);
197 if (!ok) goto end;
198 }
199 else
200 {
201 /* worry more about this one elsewhere */
202 chain_ss=sk_X509_pop(ctx->chain);
203 ctx->last_untrusted--;
204 num--;
205 x=sk_X509_value(ctx->chain,num-1);
206 }
207 }
208
209 /* We now lookup certs from the certificate store */
210 for (;;)
211 {
212 /* If we have enough, we break */
213 if (depth < num) break;
214
215 /* If we are self signed, we break */
216 xn=X509_get_issuer_name(x);
217 if (X509_NAME_cmp(X509_get_subject_name(x),xn) == 0)
218 break;
219
220 ok=X509_STORE_get_by_subject(ctx,X509_LU_X509,xn,&obj);
221 if (ok != X509_LU_X509)
222 {
223 if (ok == X509_LU_RETRY)
224 {
225 X509_OBJECT_free_contents(&obj);
226 X509err(X509_F_X509_VERIFY_CERT,X509_R_SHOULD_RETRY);
227 return(ok);
228 }
229 else if (ok != X509_LU_FAIL)
230 {
231 X509_OBJECT_free_contents(&obj);
232 /* not good :-(, break anyway */
233 return(ok);
234 }
235 break;
236 }
237 x=obj.data.x509;
238 if (!sk_X509_push(ctx->chain,obj.data.x509))
239 {
240 X509_OBJECT_free_contents(&obj);
241 X509err(X509_F_X509_VERIFY_CERT,ERR_R_MALLOC_FAILURE);
242 return(0);
243 }
244 num++;
245 }
246
247 /* we now have our chain, lets check it... */
248 xn=X509_get_issuer_name(x);
249 if (X509_NAME_cmp(X509_get_subject_name(x),xn) != 0)
250 {
251 if ((chain_ss == NULL) || (X509_NAME_cmp(X509_get_subject_name(chain_ss),xn) != 0))
252 {
253 if (ctx->last_untrusted >= num)
254 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY;
255 else
256 ctx->error=X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT;
257 ctx->current_cert=x;
258 }
259 else
260 {
261
262 sk_X509_push(ctx->chain,chain_ss);
263 num++;
264 ctx->last_untrusted=num;
265 ctx->current_cert=chain_ss;
266 ctx->error=X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
267 chain_ss=NULL;
268 }
269
270 ctx->error_depth=num-1;
271 ok=cb(0,ctx);
272 if (!ok) goto end;
273 }
274
275 /* We may as well copy down any DSA parameters that are required */
276 X509_get_pubkey_parameters(NULL,ctx->chain);
277
278 /* At this point, we have a chain and just need to verify it */
279 if (ctx->ctx->verify != NULL)
280 ok=ctx->ctx->verify(ctx);
281 else
282 ok=internal_verify(ctx);
283 if (0)
284 {
285end:
286 X509_get_pubkey_parameters(NULL,ctx->chain);
287 }
288 if (sktmp != NULL) sk_X509_free(sktmp);
289 if (chain_ss != NULL) X509_free(chain_ss);
290 return(ok);
291 }
292
293static int internal_verify(X509_STORE_CTX *ctx)
294 {
295 int i,ok=0,n;
296 X509 *xs,*xi;
297 EVP_PKEY *pkey=NULL;
298 int (*cb)();
299
300 cb=ctx->ctx->verify_cb;
301 if (cb == NULL) cb=null_callback;
302
303 n=sk_X509_num(ctx->chain);
304 ctx->error_depth=n-1;
305 n--;
306 xi=sk_X509_value(ctx->chain,n);
307 if (X509_NAME_cmp(X509_get_subject_name(xi),
308 X509_get_issuer_name(xi)) == 0)
309 xs=xi;
310 else
311 {
312 if (n <= 0)
313 {
314 ctx->error=X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE;
315 ctx->current_cert=xi;
316 ok=cb(0,ctx);
317 goto end;
318 }
319 else
320 {
321 n--;
322 ctx->error_depth=n;
323 xs=sk_X509_value(ctx->chain,n);
324 }
325 }
326
327/* ctx->error=0; not needed */
328 while (n >= 0)
329 {
330 ctx->error_depth=n;
331 if (!xs->valid)
332 {
333 if ((pkey=X509_get_pubkey(xi)) == NULL)
334 {
335 ctx->error=X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
336 ctx->current_cert=xi;
337 ok=(*cb)(0,ctx);
338 if (!ok) goto end;
339 }
340 if (X509_verify(xs,pkey) <= 0)
341 {
342 EVP_PKEY_free(pkey);
343 ctx->error=X509_V_ERR_CERT_SIGNATURE_FAILURE;
344 ctx->current_cert=xs;
345 ok=(*cb)(0,ctx);
346 if (!ok) goto end;
347 }
348 EVP_PKEY_free(pkey);
349 pkey=NULL;
350
351 i=X509_cmp_current_time(X509_get_notBefore(xs));
352 if (i == 0)
353 {
354 ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD;
355 ctx->current_cert=xs;
356 ok=(*cb)(0,ctx);
357 if (!ok) goto end;
358 }
359 if (i > 0)
360 {
361 ctx->error=X509_V_ERR_CERT_NOT_YET_VALID;
362 ctx->current_cert=xs;
363 ok=(*cb)(0,ctx);
364 if (!ok) goto end;
365 }
366 xs->valid=1;
367 }
368
369 i=X509_cmp_current_time(X509_get_notAfter(xs));
370 if (i == 0)
371 {
372 ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD;
373 ctx->current_cert=xs;
374 ok=(*cb)(0,ctx);
375 if (!ok) goto end;
376 }
377
378 if (i < 0)
379 {
380 ctx->error=X509_V_ERR_CERT_HAS_EXPIRED;
381 ctx->current_cert=xs;
382 ok=(*cb)(0,ctx);
383 if (!ok) goto end;
384 }
385
386 /* CRL CHECK */
387
388 /* The last error (if any) is still in the error value */
389 ctx->current_cert=xs;
390 ok=(*cb)(1,ctx);
391 if (!ok) goto end;
392
393 n--;
394 if (n >= 0)
395 {
396 xi=xs;
397 xs=sk_X509_value(ctx->chain,n);
398 }
399 }
400 ok=1;
401end:
402 return(ok);
403 }
404
405int X509_cmp_current_time(ASN1_UTCTIME *ctm)
406 {
407 char *str;
408 ASN1_UTCTIME atm;
409 time_t offset;
410 char buff1[24],buff2[24],*p;
411 int i,j;
412
413 p=buff1;
414 i=ctm->length;
415 str=(char *)ctm->data;
416 if ((i < 11) || (i > 17)) return(0);
417 memcpy(p,str,10);
418 p+=10;
419 str+=10;
420
421 if ((*str == 'Z') || (*str == '-') || (*str == '+'))
422 { *(p++)='0'; *(p++)='0'; }
423 else { *(p++)= *(str++); *(p++)= *(str++); }
424 *(p++)='Z';
425 *(p++)='\0';
426
427 if (*str == 'Z')
428 offset=0;
429 else
430 {
431 if ((*str != '+') && (str[5] != '-'))
432 return(0);
433 offset=((str[1]-'0')*10+(str[2]-'0'))*60;
434 offset+=(str[3]-'0')*10+(str[4]-'0');
435 if (*str == '-')
436 offset= -offset;
437 }
438 atm.type=V_ASN1_UTCTIME;
439 atm.length=sizeof(buff2);
440 atm.data=(unsigned char *)buff2;
441
442 X509_gmtime_adj(&atm,-offset);
443
444 i=(buff1[0]-'0')*10+(buff1[1]-'0');
445 if (i < 50) i+=100; /* cf. RFC 2459 */
446 j=(buff2[0]-'0')*10+(buff2[1]-'0');
447 if (j < 50) j+=100;
448
449 if (i < j) return (-1);
450 if (i > j) return (1);
451 i=strcmp(buff1,buff2);
452 if (i == 0) /* wait a second then return younger :-) */
453 return(-1);
454 else
455 return(i);
456 }
457
458ASN1_UTCTIME *X509_gmtime_adj(ASN1_UTCTIME *s, long adj)
459 {
460 time_t t;
461
462 time(&t);
463 t+=adj;
464 return(ASN1_UTCTIME_set(s,t));
465 }
466
467int X509_get_pubkey_parameters(EVP_PKEY *pkey, STACK_OF(X509) *chain)
468 {
469 EVP_PKEY *ktmp=NULL,*ktmp2;
470 int i,j;
471
472 if ((pkey != NULL) && !EVP_PKEY_missing_parameters(pkey)) return(1);
473
474 for (i=0; i<sk_X509_num(chain); i++)
475 {
476 ktmp=X509_get_pubkey(sk_X509_value(chain,i));
477 if (ktmp == NULL)
478 {
479 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY);
480 return(0);
481 }
482 if (!EVP_PKEY_missing_parameters(ktmp))
483 break;
484 else
485 {
486 EVP_PKEY_free(ktmp);
487 ktmp=NULL;
488 }
489 }
490 if (ktmp == NULL)
491 {
492 X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN);
493 return(0);
494 }
495
496 /* first, populate the other certs */
497 for (j=i-1; j >= 0; j--)
498 {
499 ktmp2=X509_get_pubkey(sk_X509_value(chain,j));
500 EVP_PKEY_copy_parameters(ktmp2,ktmp);
501 EVP_PKEY_free(ktmp2);
502 }
503
504 if (pkey != NULL) EVP_PKEY_copy_parameters(pkey,ktmp);
505 EVP_PKEY_free(ktmp);
506 return(1);
507 }
508
509int X509_STORE_add_cert(X509_STORE *ctx, X509 *x)
510 {
511 X509_OBJECT *obj,*r;
512 int ret=1;
513
514 if (x == NULL) return(0);
515 obj=(X509_OBJECT *)Malloc(sizeof(X509_OBJECT));
516 if (obj == NULL)
517 {
518 X509err(X509_F_X509_STORE_ADD_CERT,ERR_R_MALLOC_FAILURE);
519 return(0);
520 }
521 obj->type=X509_LU_X509;
522 obj->data.x509=x;
523
524 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
525
526 X509_OBJECT_up_ref_count(obj);
527
528 r=(X509_OBJECT *)lh_insert(ctx->certs,(char *)obj);
529 if (r != NULL)
530 { /* oops, put it back */
531 lh_delete(ctx->certs,(char *)obj);
532 X509_OBJECT_free_contents(obj);
533 Free(obj);
534 lh_insert(ctx->certs,(char *)r);
535 X509err(X509_F_X509_STORE_ADD_CERT,X509_R_CERT_ALREADY_IN_HASH_TABLE);
536 ret=0;
537 }
538
539 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
540
541 return(ret);
542 }
543
544int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x)
545 {
546 X509_OBJECT *obj,*r;
547 int ret=1;
548
549 if (x == NULL) return(0);
550 obj=(X509_OBJECT *)Malloc(sizeof(X509_OBJECT));
551 if (obj == NULL)
552 {
553 X509err(X509_F_X509_STORE_ADD_CRL,ERR_R_MALLOC_FAILURE);
554 return(0);
555 }
556 obj->type=X509_LU_CRL;
557 obj->data.crl=x;
558
559 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
560
561 X509_OBJECT_up_ref_count(obj);
562
563 r=(X509_OBJECT *)lh_insert(ctx->certs,(char *)obj);
564 if (r != NULL)
565 { /* oops, put it back */
566 lh_delete(ctx->certs,(char *)obj);
567 X509_OBJECT_free_contents(obj);
568 Free(obj);
569 lh_insert(ctx->certs,(char *)r);
570 X509err(X509_F_X509_STORE_ADD_CRL,X509_R_CERT_ALREADY_IN_HASH_TABLE);
571 ret=0;
572 }
573
574 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
575
576 return(ret);
577 }
578
579int X509_STORE_CTX_get_ex_new_index(long argl, char *argp, int (*new_func)(),
580 int (*dup_func)(), void (*free_func)())
581 {
582 x509_store_ctx_num++;
583 return(CRYPTO_get_ex_new_index(x509_store_ctx_num-1,
584 &x509_store_ctx_method,
585 argl,argp,new_func,dup_func,free_func));
586 }
587
588int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx, void *data)
589 {
590 return(CRYPTO_set_ex_data(&ctx->ex_data,idx,data));
591 }
592
593void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx)
594 {
595 return(CRYPTO_get_ex_data(&ctx->ex_data,idx));
596 }
597
598int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx)
599 {
600 return(ctx->error);
601 }
602
603void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int err)
604 {
605 ctx->error=err;
606 }
607
608int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx)
609 {
610 return(ctx->error_depth);
611 }
612
613X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx)
614 {
615 return(ctx->current_cert);
616 }
617
618STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx)
619 {
620 return(ctx->chain);
621 }
622
623void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx, X509 *x)
624 {
625 ctx->cert=x;
626 }
627
628void X509_STORE_CTX_set_chain(X509_STORE_CTX *ctx, STACK_OF(X509) *sk)
629 {
630 ctx->untrusted=sk;
631 }
632
633IMPLEMENT_STACK_OF(X509)
634IMPLEMENT_ASN1_SET_OF(X509)
635
636IMPLEMENT_STACK_OF(X509_NAME)
637
638IMPLEMENT_STACK_OF(X509_ATTRIBUTE)
639IMPLEMENT_ASN1_SET_OF(X509_ATTRIBUTE)
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-09 03:02:33 +0000