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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#ifdef __cplusplus
69extern "C" {
70#endif
71
72#include <openssl/bio.h>
73#include <openssl/crypto.h>
74
75/* Outer object */
76typedef struct x509_hash_dir_st
77 {
78 int num_dirs;
79 char **dirs;
80 int *dirs_type;
81 int num_dirs_alloced;
82 } X509_HASH_DIR_CTX;
83
84typedef struct x509_file_st
85 {
86 int num_paths; /* number of paths to files or directories */
87 int num_alloced;
88 char **paths; /* the list of paths or directories */
89 int *path_type;
90 } X509_CERT_FILE_CTX;
91
92/*******************************/
93/*
94SSL_CTX -> X509_STORE
95 -> X509_LOOKUP
96 ->X509_LOOKUP_METHOD
97 -> X509_LOOKUP
98 ->X509_LOOKUP_METHOD
99
100SSL -> X509_STORE_CTX
101 ->X509_STORE
102
103The X509_STORE holds the tables etc for verification stuff.
104A X509_STORE_CTX is used while validating a single certificate.
105The X509_STORE has X509_LOOKUPs for looking up certs.
106The X509_STORE then calls a function to actually verify the
107certificate chain.
108*/
109
110#define X509_LU_RETRY -1
111#define X509_LU_FAIL 0
112#define X509_LU_X509 1
113#define X509_LU_CRL 2
114#define X509_LU_PKEY 3
115
116typedef struct x509_object_st
117 {
118 /* one of the above types */
119 int type;
120 union {
121 char *ptr;
122 X509 *x509;
123 X509_CRL *crl;
124 EVP_PKEY *pkey;
125 } data;
126 } X509_OBJECT;
127
128typedef struct x509_lookup_st X509_LOOKUP;
129
130DECLARE_STACK_OF(X509_LOOKUP)
131
132/* This is a static that defines the function interface */
133typedef struct x509_lookup_method_st
134 {
135 const char *name;
136 int (*new_item)(X509_LOOKUP *ctx);
137 void (*free)(X509_LOOKUP *ctx);
138 int (*init)(X509_LOOKUP *ctx);
139 int (*shutdown)(X509_LOOKUP *ctx);
140 int (*ctrl)(X509_LOOKUP *ctx,int cmd,const char *argc,long argl,
141 char **ret);
142 int (*get_by_subject)(X509_LOOKUP *ctx,int type,X509_NAME *name,
143 X509_OBJECT *ret);
144 int (*get_by_issuer_serial)(X509_LOOKUP *ctx,int type,X509_NAME *name,
145 ASN1_INTEGER *serial,X509_OBJECT *ret);
146 int (*get_by_fingerprint)(X509_LOOKUP *ctx,int type,
147 unsigned char *bytes,int len,
148 X509_OBJECT *ret);
149 int (*get_by_alias)(X509_LOOKUP *ctx,int type,char *str,int len,
150 X509_OBJECT *ret);
151 } X509_LOOKUP_METHOD;
152
153typedef struct x509_store_state_st X509_STORE_CTX;
154
155/* This is used to hold everything. It is used for all certificate
156 * validation. Once we have a certificate chain, the 'verify'
157 * function is then called to actually check the cert chain. */
158typedef struct x509_store_st
159 {
160 /* The following is a cache of trusted certs */
161 int cache; /* if true, stash any hits */
162#ifdef HEADER_LHASH_H
163 LHASH *certs; /* cached certs; */
164#else
165 char *certs;
166#endif
167
168 /* These are external lookup methods */
169 STACK_OF(X509_LOOKUP) *get_cert_methods;
170 int (*verify)(X509_STORE_CTX *ctx); /* called to verify a certificate */
171 int (*verify_cb)(int ok,X509_STORE_CTX *ctx); /* error callback */
172
173 CRYPTO_EX_DATA ex_data;
174 int references;
175 int depth; /* how deep to look (still unused -- X509_STORE_CTX's depth is used) */
176 } X509_STORE;
177
178#define X509_STORE_set_depth(ctx,d) ((ctx)->depth=(d))
179
180#define X509_STORE_set_verify_cb_func(ctx,func) ((ctx)->verify_cb=(func))
181#define X509_STORE_set_verify_func(ctx,func) ((ctx)->verify=(func))
182
183/* This is the functions plus an instance of the local variables. */
184struct x509_lookup_st
185 {
186 int init; /* have we been started */
187 int skip; /* don't use us. */
188 X509_LOOKUP_METHOD *method; /* the functions */
189 char *method_data; /* method data */
190
191 X509_STORE *store_ctx; /* who owns us */
192 };
193
194/* This is a temporary used when processing cert chains. Since the
195 * gathering of the cert chain can take some time (and have to be
196 * 'retried', this needs to be kept and passed around. */
197struct x509_store_state_st /* X509_STORE_CTX */
198 {
199 X509_STORE *ctx;
200 int current_method; /* used when looking up certs */
201
202 /* The following are set by the caller */
203 X509 *cert; /* The cert to check */
204 STACK_OF(X509) *untrusted; /* chain of X509s - untrusted - passed in */
205 int purpose; /* purpose to check untrusted certificates */
206 int trust; /* trust setting to check */
207
208 /* The following is built up */
209 int depth; /* how far to go looking up certs */
210 int valid; /* if 0, rebuild chain */
211 int last_untrusted; /* index of last untrusted cert */
212 STACK_OF(X509) *chain; /* chain of X509s - built up and trusted */
213
214 /* When something goes wrong, this is why */
215 int error_depth;
216 int error;
217 X509 *current_cert;
218
219 CRYPTO_EX_DATA ex_data;
220 };
221
222#define X509_STORE_CTX_set_depth(ctx,d) ((ctx)->depth=(d))
223
224#define X509_STORE_CTX_set_app_data(ctx,data) \
225 X509_STORE_CTX_set_ex_data(ctx,0,data)
226#define X509_STORE_CTX_get_app_data(ctx) \
227 X509_STORE_CTX_get_ex_data(ctx,0)
228
229#define X509_L_FILE_LOAD 1
230#define X509_L_ADD_DIR 2
231
232#define X509_LOOKUP_load_file(x,name,type) \
233 X509_LOOKUP_ctrl((x),X509_L_FILE_LOAD,(name),(long)(type),NULL)
234
235#define X509_LOOKUP_add_dir(x,name,type) \
236 X509_LOOKUP_ctrl((x),X509_L_ADD_DIR,(name),(long)(type),NULL)
237
238#define X509_V_OK 0
239/* illegal error (for uninitialized values, to avoid X509_V_OK): 1 */
240
241#define X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT 2
242#define X509_V_ERR_UNABLE_TO_GET_CRL 3
243#define X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE 4
244#define X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE 5
245#define X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY 6
246#define X509_V_ERR_CERT_SIGNATURE_FAILURE 7
247#define X509_V_ERR_CRL_SIGNATURE_FAILURE 8
248#define X509_V_ERR_CERT_NOT_YET_VALID 9
249#define X509_V_ERR_CERT_HAS_EXPIRED 10
250#define X509_V_ERR_CRL_NOT_YET_VALID 11
251#define X509_V_ERR_CRL_HAS_EXPIRED 12
252#define X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD 13
253#define X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD 14
254#define X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD 15
255#define X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD 16
256#define X509_V_ERR_OUT_OF_MEM 17
257#define X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT 18
258#define X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN 19
259#define X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY 20
260#define X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE 21
261#define X509_V_ERR_CERT_CHAIN_TOO_LONG 22
262#define X509_V_ERR_CERT_REVOKED 23
263#define X509_V_ERR_INVALID_CA 24
264#define X509_V_ERR_PATH_LENGTH_EXCEEDED 25
265#define X509_V_ERR_INVALID_PURPOSE 26
266#define X509_V_ERR_CERT_UNTRUSTED 27
267#define X509_V_ERR_CERT_REJECTED 28
268
269/* The application is not happy */
270#define X509_V_ERR_APPLICATION_VERIFICATION 50
271
272 /* These functions are being redefined in another directory,
273 and clash when the linker is case-insensitive, so let's
274 hide them a little, by giving them an extra 'o' at the
275 beginning of the name... */
276#ifdef VMS
277#undef X509v3_cleanup_extensions
278#define X509v3_cleanup_extensions oX509v3_cleanup_extensions
279#undef X509v3_add_extension
280#define X509v3_add_extension oX509v3_add_extension
281#undef X509v3_add_netscape_extensions
282#define X509v3_add_netscape_extensions oX509v3_add_netscape_extensions
283#undef X509v3_add_standard_extensions
284#define X509v3_add_standard_extensions oX509v3_add_standard_extensions
285#endif
286
287#ifdef HEADER_LHASH_H
288X509_OBJECT *X509_OBJECT_retrieve_by_subject(LHASH *h,int type,X509_NAME *name);
289#endif
290void X509_OBJECT_up_ref_count(X509_OBJECT *a);
291void X509_OBJECT_free_contents(X509_OBJECT *a);
292X509_STORE *X509_STORE_new(void );
293void X509_STORE_free(X509_STORE *v);
294
295X509_STORE_CTX *X509_STORE_CTX_new(void);
296void X509_STORE_CTX_free(X509_STORE_CTX *ctx);
297void X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
298 X509 *x509, STACK_OF(X509) *chain);
299void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);
300
301X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m);
302
303X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void);
304X509_LOOKUP_METHOD *X509_LOOKUP_file(void);
305
306int X509_STORE_add_cert(X509_STORE *ctx, X509 *x);
307int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x);
308
309int X509_STORE_get_by_subject(X509_STORE_CTX *vs,int type,X509_NAME *name,
310 X509_OBJECT *ret);
311
312int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
313 long argl, char **ret);
314
315#ifndef NO_STDIO
316int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type);
317int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type);
318int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type);
319#endif
320
321
322X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method);
323void X509_LOOKUP_free(X509_LOOKUP *ctx);
324int X509_LOOKUP_init(X509_LOOKUP *ctx);
325int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
326 X509_OBJECT *ret);
327int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
328 ASN1_INTEGER *serial, X509_OBJECT *ret);
329int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
330 unsigned char *bytes, int len, X509_OBJECT *ret);
331int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str,
332 int len, X509_OBJECT *ret);
333int X509_LOOKUP_shutdown(X509_LOOKUP *ctx);
334
335#ifndef NO_STDIO
336int X509_STORE_load_locations (X509_STORE *ctx,
337 const char *file, const char *dir);
338int X509_STORE_set_default_paths(X509_STORE *ctx);
339#endif
340
341int X509_STORE_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
342 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
343int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx,int idx,void *data);
344void * X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx,int idx);
345int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx);
346void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx,int s);
347int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx);
348X509 * X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
349STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx);
350STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx);
351void X509_STORE_CTX_set_cert(X509_STORE_CTX *c,X509 *x);
352void X509_STORE_CTX_set_chain(X509_STORE_CTX *c,STACK_OF(X509) *sk);
353int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose);
354int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust);
355int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
356 int purpose, int trust);
357
358#ifdef __cplusplus
359}
360#endif
361#endif
362