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1/* crypto/x509/x509_vfy.h */
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#ifndef HEADER_X509_H
60#include <openssl/x509.h>
61/* openssl/x509.h ends up #include-ing this file at about the only
62 * appropriate moment. */
63#endif
64
65#ifndef HEADER_X509_VFY_H
66#define HEADER_X509_VFY_H
67
68#ifndef OPENSSL_NO_LHASH
69#include <openssl/lhash.h>
70#endif
71#include <openssl/bio.h>
72#include <openssl/crypto.h>
73#include <openssl/symhacks.h>
74
75#ifdef __cplusplus
76extern "C" {
77#endif
78
79/* Outer object */
80typedef struct x509_hash_dir_st
81 {
82 int num_dirs;
83 char **dirs;
84 int *dirs_type;
85 int num_dirs_alloced;
86 } X509_HASH_DIR_CTX;
87
88typedef struct x509_file_st
89 {
90 int num_paths; /* number of paths to files or directories */
91 int num_alloced;
92 char **paths; /* the list of paths or directories */
93 int *path_type;
94 } X509_CERT_FILE_CTX;
95
96/*******************************/
97/*
98SSL_CTX -> X509_STORE
99 -> X509_LOOKUP
100 ->X509_LOOKUP_METHOD
101 -> X509_LOOKUP
102 ->X509_LOOKUP_METHOD
103
104SSL -> X509_STORE_CTX
105 ->X509_STORE
106
107The X509_STORE holds the tables etc for verification stuff.
108A X509_STORE_CTX is used while validating a single certificate.
109The X509_STORE has X509_LOOKUPs for looking up certs.
110The X509_STORE then calls a function to actually verify the
111certificate chain.
112*/
113
114#define X509_LU_RETRY -1
115#define X509_LU_FAIL 0
116#define X509_LU_X509 1
117#define X509_LU_CRL 2
118#define X509_LU_PKEY 3
119
120typedef struct x509_object_st
121 {
122 /* one of the above types */
123 int type;
124 union {
125 char *ptr;
126 X509 *x509;
127 X509_CRL *crl;
128 EVP_PKEY *pkey;
129 } data;
130 } X509_OBJECT;
131
132typedef struct x509_lookup_st X509_LOOKUP;
133
134DECLARE_STACK_OF(X509_LOOKUP)
135DECLARE_STACK_OF(X509_OBJECT)
136
137/* This is a static that defines the function interface */
138typedef struct x509_lookup_method_st
139 {
140 const char *name;
141 int (*new_item)(X509_LOOKUP *ctx);
142 void (*free)(X509_LOOKUP *ctx);
143 int (*init)(X509_LOOKUP *ctx);
144 int (*shutdown)(X509_LOOKUP *ctx);
145 int (*ctrl)(X509_LOOKUP *ctx,int cmd,const char *argc,long argl,
146 char **ret);
147 int (*get_by_subject)(X509_LOOKUP *ctx,int type,X509_NAME *name,
148 X509_OBJECT *ret);
149 int (*get_by_issuer_serial)(X509_LOOKUP *ctx,int type,X509_NAME *name,
150 ASN1_INTEGER *serial,X509_OBJECT *ret);
151 int (*get_by_fingerprint)(X509_LOOKUP *ctx,int type,
152 unsigned char *bytes,int len,
153 X509_OBJECT *ret);
154 int (*get_by_alias)(X509_LOOKUP *ctx,int type,char *str,int len,
155 X509_OBJECT *ret);
156 } X509_LOOKUP_METHOD;
157
158/* This is used to hold everything. It is used for all certificate
159 * validation. Once we have a certificate chain, the 'verify'
160 * function is then called to actually check the cert chain. */
161struct x509_store_st
162 {
163 /* The following is a cache of trusted certs */
164 int cache; /* if true, stash any hits */
165 STACK_OF(X509_OBJECT) *objs; /* Cache of all objects */
166
167 /* These are external lookup methods */
168 STACK_OF(X509_LOOKUP) *get_cert_methods;
169
170 /* The following fields are not used by X509_STORE but are
171 * inherited by X509_STORE_CTX when it is initialised.
172 */
173
174 unsigned long flags; /* Various verify flags */
175 int purpose;
176 int trust;
177 /* Callbacks for various operations */
178 int (*verify)(X509_STORE_CTX *ctx); /* called to verify a certificate */
179 int (*verify_cb)(int ok,X509_STORE_CTX *ctx); /* error callback */
180 int (*get_issuer)(X509 **issuer, X509_STORE_CTX *ctx, X509 *x); /* get issuers cert from ctx */
181 int (*check_issued)(X509_STORE_CTX *ctx, X509 *x, X509 *issuer); /* check issued */
182 int (*check_revocation)(X509_STORE_CTX *ctx); /* Check revocation status of chain */
183 int (*get_crl)(X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x); /* retrieve CRL */
184 int (*check_crl)(X509_STORE_CTX *ctx, X509_CRL *crl); /* Check CRL validity */
185 int (*cert_crl)(X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x); /* Check certificate against CRL */
186 int (*cleanup)(X509_STORE_CTX *ctx);
187
188 CRYPTO_EX_DATA ex_data;
189 int references;
190 int depth; /* how deep to look (still unused -- X509_STORE_CTX's depth is used) */
191 } /* X509_STORE */;
192
193#define X509_STORE_set_depth(ctx,d) ((ctx)->depth=(d))
194
195#define X509_STORE_set_verify_cb_func(ctx,func) ((ctx)->verify_cb=(func))
196#define X509_STORE_set_verify_func(ctx,func) ((ctx)->verify=(func))
197
198/* This is the functions plus an instance of the local variables. */
199struct x509_lookup_st
200 {
201 int init; /* have we been started */
202 int skip; /* don't use us. */
203 X509_LOOKUP_METHOD *method; /* the functions */
204 char *method_data; /* method data */
205
206 X509_STORE *store_ctx; /* who owns us */
207 } /* X509_LOOKUP */;
208
209/* This is a used when verifying cert chains. Since the
210 * gathering of the cert chain can take some time (and have to be
211 * 'retried', this needs to be kept and passed around. */
212struct x509_store_ctx_st /* X509_STORE_CTX */
213 {
214 X509_STORE *ctx;
215 int current_method; /* used when looking up certs */
216
217 /* The following are set by the caller */
218 X509 *cert; /* The cert to check */
219 STACK_OF(X509) *untrusted; /* chain of X509s - untrusted - passed in */
220 int purpose; /* purpose to check untrusted certificates */
221 int trust; /* trust setting to check */
222 time_t check_time; /* time to make verify at */
223 unsigned long flags; /* Various verify flags */
224 void *other_ctx; /* Other info for use with get_issuer() */
225
226 /* Callbacks for various operations */
227 int (*verify)(X509_STORE_CTX *ctx); /* called to verify a certificate */
228 int (*verify_cb)(int ok,X509_STORE_CTX *ctx); /* error callback */
229 int (*get_issuer)(X509 **issuer, X509_STORE_CTX *ctx, X509 *x); /* get issuers cert from ctx */
230 int (*check_issued)(X509_STORE_CTX *ctx, X509 *x, X509 *issuer); /* check issued */
231 int (*check_revocation)(X509_STORE_CTX *ctx); /* Check revocation status of chain */
232 int (*get_crl)(X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x); /* retrieve CRL */
233 int (*check_crl)(X509_STORE_CTX *ctx, X509_CRL *crl); /* Check CRL validity */
234 int (*cert_crl)(X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x); /* Check certificate against CRL */
235 int (*cleanup)(X509_STORE_CTX *ctx);
236
237 /* The following is built up */
238 int depth; /* how far to go looking up certs */
239 int valid; /* if 0, rebuild chain */
240 int last_untrusted; /* index of last untrusted cert */
241 STACK_OF(X509) *chain; /* chain of X509s - built up and trusted */
242
243 /* When something goes wrong, this is why */
244 int error_depth;
245 int error;
246 X509 *current_cert;
247 X509 *current_issuer; /* cert currently being tested as valid issuer */
248 X509_CRL *current_crl; /* current CRL */
249
250 CRYPTO_EX_DATA ex_data;
251 } /* X509_STORE_CTX */;
252
253#define X509_STORE_CTX_set_depth(ctx,d) ((ctx)->depth=(d))
254
255#define X509_STORE_CTX_set_app_data(ctx,data) \
256 X509_STORE_CTX_set_ex_data(ctx,0,data)
257#define X509_STORE_CTX_get_app_data(ctx) \
258 X509_STORE_CTX_get_ex_data(ctx,0)
259
260#define X509_L_FILE_LOAD 1
261#define X509_L_ADD_DIR 2
262
263#define X509_LOOKUP_load_file(x,name,type) \
264 X509_LOOKUP_ctrl((x),X509_L_FILE_LOAD,(name),(long)(type),NULL)
265
266#define X509_LOOKUP_add_dir(x,name,type) \
267 X509_LOOKUP_ctrl((x),X509_L_ADD_DIR,(name),(long)(type),NULL)
268
269#define X509_V_OK 0
270/* illegal error (for uninitialized values, to avoid X509_V_OK): 1 */
271
272#define X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT 2
273#define X509_V_ERR_UNABLE_TO_GET_CRL 3
274#define X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE 4
275#define X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE 5
276#define X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY 6
277#define X509_V_ERR_CERT_SIGNATURE_FAILURE 7
278#define X509_V_ERR_CRL_SIGNATURE_FAILURE 8
279#define X509_V_ERR_CERT_NOT_YET_VALID 9
280#define X509_V_ERR_CERT_HAS_EXPIRED 10
281#define X509_V_ERR_CRL_NOT_YET_VALID 11
282#define X509_V_ERR_CRL_HAS_EXPIRED 12
283#define X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD 13
284#define X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD 14
285#define X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD 15
286#define X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD 16
287#define X509_V_ERR_OUT_OF_MEM 17
288#define X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT 18
289#define X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN 19
290#define X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY 20
291#define X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE 21
292#define X509_V_ERR_CERT_CHAIN_TOO_LONG 22
293#define X509_V_ERR_CERT_REVOKED 23
294#define X509_V_ERR_INVALID_CA 24
295#define X509_V_ERR_PATH_LENGTH_EXCEEDED 25
296#define X509_V_ERR_INVALID_PURPOSE 26
297#define X509_V_ERR_CERT_UNTRUSTED 27
298#define X509_V_ERR_CERT_REJECTED 28
299/* These are 'informational' when looking for issuer cert */
300#define X509_V_ERR_SUBJECT_ISSUER_MISMATCH 29
301#define X509_V_ERR_AKID_SKID_MISMATCH 30
302#define X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH 31
303#define X509_V_ERR_KEYUSAGE_NO_CERTSIGN 32
304
305#define X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER 33
306#define X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION 34
307#define X509_V_ERR_KEYUSAGE_NO_CRL_SIGN 35
308#define X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION 36
309#define X509_V_ERR_INVALID_NON_CA 37
310#define X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED 38
311#define X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE 39
312#define X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED 40
313
314/* The application is not happy */
315#define X509_V_ERR_APPLICATION_VERIFICATION 50
316
317/* Certificate verify flags */
318
319/* Send issuer+subject checks to verify_cb */
320#define X509_V_FLAG_CB_ISSUER_CHECK 0x1
321/* Use check time instead of current time */
322#define X509_V_FLAG_USE_CHECK_TIME 0x2
323/* Lookup CRLs */
324#define X509_V_FLAG_CRL_CHECK 0x4
325/* Lookup CRLs for whole chain */
326#define X509_V_FLAG_CRL_CHECK_ALL 0x8
327/* Ignore unhandled critical extensions */
328#define X509_V_FLAG_IGNORE_CRITICAL 0x10
329/* Disable workarounds for broken certificates */
330#define X509_V_FLAG_X509_STRICT 0x20
331/* Enable proxy certificate validation */
332#define X509_V_FLAG_ALLOW_PROXY_CERTS 0x40
333
334int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
335 X509_NAME *name);
336X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h,int type,X509_NAME *name);
337X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x);
338void X509_OBJECT_up_ref_count(X509_OBJECT *a);
339void X509_OBJECT_free_contents(X509_OBJECT *a);
340X509_STORE *X509_STORE_new(void );
341void X509_STORE_free(X509_STORE *v);
342
343void X509_STORE_set_flags(X509_STORE *ctx, long flags);
344int X509_STORE_set_purpose(X509_STORE *ctx, int purpose);
345int X509_STORE_set_trust(X509_STORE *ctx, int trust);
346
347X509_STORE_CTX *X509_STORE_CTX_new(void);
348
349int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
350
351void X509_STORE_CTX_free(X509_STORE_CTX *ctx);
352int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
353 X509 *x509, STACK_OF(X509) *chain);
354void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk);
355void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);
356
357X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m);
358
359X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void);
360X509_LOOKUP_METHOD *X509_LOOKUP_file(void);
361
362int X509_STORE_add_cert(X509_STORE *ctx, X509 *x);
363int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x);
364
365int X509_STORE_get_by_subject(X509_STORE_CTX *vs,int type,X509_NAME *name,
366 X509_OBJECT *ret);
367
368int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
369 long argl, char **ret);
370
371#ifndef OPENSSL_NO_STDIO
372int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type);
373int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type);
374int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type);
375#endif
376
377
378X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method);
379void X509_LOOKUP_free(X509_LOOKUP *ctx);
380int X509_LOOKUP_init(X509_LOOKUP *ctx);
381int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
382 X509_OBJECT *ret);
383int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
384 ASN1_INTEGER *serial, X509_OBJECT *ret);
385int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
386 unsigned char *bytes, int len, X509_OBJECT *ret);
387int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str,
388 int len, X509_OBJECT *ret);
389int X509_LOOKUP_shutdown(X509_LOOKUP *ctx);
390
391#ifndef OPENSSL_NO_STDIO
392int X509_STORE_load_locations (X509_STORE *ctx,
393 const char *file, const char *dir);
394int X509_STORE_set_default_paths(X509_STORE *ctx);
395#endif
396
397int X509_STORE_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
398 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
399int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx,int idx,void *data);
400void * X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx,int idx);
401int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx);
402void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx,int s);
403int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx);
404X509 * X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
405STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx);
406STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx);
407void X509_STORE_CTX_set_cert(X509_STORE_CTX *c,X509 *x);
408void X509_STORE_CTX_set_chain(X509_STORE_CTX *c,STACK_OF(X509) *sk);
409int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose);
410int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust);
411int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
412 int purpose, int trust);
413void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, long flags);
414void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, long flags, time_t t);
415void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX *ctx,
416 int (*verify_cb)(int, X509_STORE_CTX *));
417
418#ifdef __cplusplus
419}
420#endif
421#endif
422
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