crypto/x509/x509_vfy.h

   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_VFY_H
  60 #define HEADER_X509_VFY_H
  61
  62 #ifdef  __cplusplus
  63 extern "C" {
  64 #endif
  65
  66 #include "bio.h"
  67 #include "crypto.h"
  68
  69 /* Outer object */
  70 typedef struct x509_hash_dir_st
  71         {
  72         int num_dirs;
  73         char **dirs;
  74         int *dirs_type;
  75         int num_dirs_alloced;
  76         } X509_HASH_DIR_CTX;
  77
  78 typedef struct x509_file_st
  79         {
  80         int num_paths;  /* number of paths to files or directories */
  81         int num_alloced;
  82         char **paths;   /* the list of paths or directories */
  83         int *path_type;
  84         } X509_CERT_FILE_CTX;
  85
  86 /*******************************/
  87 /*
  88 SSL_CTX -> X509_STORE
  89                 -> X509_LOOKUP
  90                         ->X509_LOOKUP_METHOD
  91                 -> X509_LOOKUP
  92                         ->X509_LOOKUP_METHOD
  93
  94 SSL     -> X509_STORE_CTX
  95                 ->X509_STORE
  96
  97 The X509_STORE holds the tables etc for verification stuff.
  98 A X509_STORE_CTX is used while validating a single certificate.
  99 The X509_STORE has X509_LOOKUPs for looking up certs.
 100 The X509_STORE then calls a function to actually verify the
 101 certificate chain.
 102 */
 103
 104 #define X509_LU_RETRY           -1
 105 #define X509_LU_FAIL            0
 106 #define X509_LU_X509            1
 107 #define X509_LU_CRL             2
 108 #define X509_LU_PKEY            3
 109
 110 typedef struct x509_object_st
 111         {
 112         /* one of the above types */
 113         int type;
 114         union   {
 115                 char *ptr;
 116                 X509 *x509;
 117                 X509_CRL *crl;
 118                 EVP_PKEY *pkey;
 119                 } data;
 120         } X509_OBJECT;
 121
 122 /* This is a static that defines the function interface */
 123 typedef struct x509_lookup_method_st
 124         {
 125         char *name;
 126         int (*new_item)();
 127         void (*free)();
 128         int (*init)(/* meth, char ** */);
 129         int (*shutdown)( /* meth, char ** */);
 130         int (*ctrl)( /* meth, char **, int cmd, char *argp, int argi */);
 131         int (*get_by_subject)(/* meth, char **, XNAME *, X509 **ret */);
 132         int (*get_by_issuer_serial)();
 133         int (*get_by_fingerprint)();
 134         int (*get_by_alias)();
 135         } X509_LOOKUP_METHOD;
 136
 137 /* This is used to hold everything.  It is used for all certificate
 138  * validation.  Once we have a certificate chain, the 'verify'
 139  * function is then called to actually check the cert chain. */
 140 typedef struct x509_store_st
 141         {
 142         /* The following is a cache of trusted certs */
 143         int cache;      /* if true, stash any hits */
 144 #ifdef HEADER_LHASH_H
 145         LHASH *certs;   /* cached certs; */
 146 #else
 147         char *certs;
 148 #endif
 149
 150         /* These are external lookup methods */
 151         STACK *get_cert_methods;/* X509_LOOKUP */
 152         int (*verify)();        /* called to verify a certificate */
 153         int (*verify_cb)();     /* error callback */
 154
 155         CRYPTO_EX_DATA ex_data;
 156         int references;
 157         int depth;              /* how deep to look (still unused) */
 158         }  X509_STORE;
 159
 160 #define X509_STORE_set_depth(ctx,d)       ((ctx)->depth=(d))
 161
 162 #define X509_STORE_set_verify_cb_func(ctx,func) ((ctx)->verify_cb=(func))
 163 #define X509_STORE_set_verify_func(ctx,func)    ((ctx)->verify=(func))
 164
 165 /* This is the functions plus an instance of the local variables. */
 166 typedef struct x509_lookup_st
 167         {
 168         int init;                       /* have we been started */
 169         int skip;                       /* don't use us. */
 170         X509_LOOKUP_METHOD *method;     /* the functions */
 171         char *method_data;              /* method data */
 172
 173         X509_STORE *store_ctx;  /* who owns us */
 174         } X509_LOOKUP;
 175
 176 /* This is a temporary used when processing cert chains.  Since the
 177  * gathering of the cert chain can take some time (and have to be
 178  * 'retried', this needs to be kept and passed around. */
 179 typedef struct x509_store_state_st
 180         {
 181         X509_STORE *ctx;
 182         int current_method;     /* used when looking up certs */
 183
 184         /* The following are set by the caller */
 185         X509 *cert;             /* The cert to check */
 186         STACK *untrusted;       /* chain of X509s - untrusted - passed in */
 187
 188         /* The following is built up */
 189         int depth;              /* how far to go looking up certs */
 190         int valid;              /* if 0, rebuild chain */
 191         int last_untrusted;     /* index of last untrusted cert */
 192         STACK *chain;           /* chain of X509s - built up and trusted */
 193
 194         /* When something goes wrong, this is why */
 195         int error_depth;
 196         int error;
 197         X509 *current_cert;
 198
 199         CRYPTO_EX_DATA ex_data;
 200         } X509_STORE_CTX;
 201
 202 #define X509_STORE_CTX_set_app_data(ctx,data) \
 203         X509_STORE_CTX_set_ex_data(ctx,0,data)
 204 #define X509_STORE_CTX_get_app_data(ctx) \
 205         X509_STORE_CTX_get_ex_data(ctx,0)
 206
 207 #define X509_L_FILE_LOAD        1
 208 #define X509_L_ADD_DIR          2
 209
 210 X509_LOOKUP_METHOD *X509_LOOKUP_file();
 211 #define X509_LOOKUP_load_file(x,name,type) \
 212                 X509_LOOKUP_ctrl((x),X509_L_FILE_LOAD,(name),(long)(type),NULL)
 213
 214 X509_LOOKUP_METHOD *X509_LOOKUP_dir();
 215 #define X509_LOOKUP_add_dir(x,name,type) \
 216                 X509_LOOKUP_ctrl((x),X509_L_ADD_DIR,(name),(long)(type),NULL)
 217
 218 #define         X509_V_OK                                       0
 219
 220 #define         X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT            2
 221 #define         X509_V_ERR_UNABLE_TO_GET_CRL                    3
 222 #define         X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE     4
 223 #define         X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE      5
 224 #define         X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY   6
 225 #define         X509_V_ERR_CERT_SIGNATURE_FAILURE               7
 226 #define         X509_V_ERR_CRL_SIGNATURE_FAILURE                8
 227 #define         X509_V_ERR_CERT_NOT_YET_VALID                   9
 228 #define         X509_V_ERR_CERT_HAS_EXPIRED                     10
 229 #define         X509_V_ERR_CRL_NOT_YET_VALID                    11
 230 #define         X509_V_ERR_CRL_HAS_EXPIRED                      12
 231 #define         X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD       13
 232 #define         X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD        14
 233 #define         X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD       15
 234 #define         X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD       16
 235 #define         X509_V_ERR_OUT_OF_MEM                           17
 236 #define         X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT          18
 237 #define         X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN            19
 238 #define         X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY    20
 239 #define         X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE      21
 240 #define         X509_V_ERR_CERT_CHAIN_TOO_LONG                  22
 241 #define         X509_V_ERR_CERT_REVOKED                         23
 242
 243 /* The application is not happy */
 244 #define         X509_V_ERR_APPLICATION_VERIFICATION             50
 245
 246 #ifndef NOPROTO
 247 #ifdef HEADER_LHASH_H
 248 X509_OBJECT *X509_OBJECT_retrieve_by_subject(LHASH *h,int type,X509_NAME *name);
 249 #endif
 250 void X509_OBJECT_up_ref_count(X509_OBJECT *a);
 251 void X509_OBJECT_free_contents(X509_OBJECT *a);
 252 X509_STORE *X509_STORE_new(void );
 253 void X509_STORE_free(X509_STORE *v);
 254
 255 void X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
 256         X509 *x509, STACK *chain);
 257 void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);
 258
 259 X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m);
 260
 261 X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void);
 262 X509_LOOKUP_METHOD *X509_LOOKUP_file(void);
 263
 264 int X509_STORE_add_cert(X509_STORE *ctx, X509 *x);
 265 int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x);
 266
 267 int X509_STORE_get_by_subject(X509_STORE_CTX *vs,int type,X509_NAME *name,
 268         X509_OBJECT *ret);
 269
 270 int X509_LOOKUP_ctrl(X509_LOOKUP *ctx,int cmd,char *argc,long argl,char **ret);
 271
 272 #ifndef NO_STDIO
 273 int X509_load_cert_file(X509_LOOKUP *ctx, char *file, int type);
 274 int X509_load_crl_file(X509_LOOKUP *ctx, char *file, int type);
 275 #endif
 276
 277 void X509v3_cleanup_extensions(void );
 278 int X509v3_add_extension(X509_EXTENSION_METHOD *x);
 279 int X509v3_add_netscape_extensions(void );
 280 int X509v3_add_standard_extensions(void );
 281
 282 X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method);
 283 void X509_LOOKUP_free(X509_LOOKUP *ctx);
 284 int X509_LOOKUP_init(X509_LOOKUP *ctx);
 285 int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
 286         X509_OBJECT *ret);
 287 int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
 288         ASN1_INTEGER *serial, X509_OBJECT *ret);
 289 int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
 290         unsigned char *bytes, int len, X509_OBJECT *ret);
 291 int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str,
 292         int len, X509_OBJECT *ret);
 293 int X509_LOOKUP_shutdown(X509_LOOKUP *ctx);
 294
 295 #ifndef NO_STDIO
 296 int     X509_STORE_load_locations (X509_STORE *ctx,
 297                 char *file, char *dir);
 298 int     X509_STORE_set_default_paths(X509_STORE *ctx);
 299 #endif
 300
 301 int X509_STORE_CTX_get_ex_new_index(long argl, char *argp, int (*new_func)(),
 302         int (*dup_func)(), void (*free_func)());
 303 int     X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx,int idx,char *data);
 304 char *  X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx,int idx);
 305 int     X509_STORE_CTX_get_error(X509_STORE_CTX *ctx);
 306 void    X509_STORE_CTX_set_error(X509_STORE_CTX *ctx,int s);
 307 int     X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx);
 308 X509 *  X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
 309 STACK * X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx);
 310 void    X509_STORE_CTX_set_cert(X509_STORE_CTX *c,X509 *x);
 311 void    X509_STORE_CTX_set_chain(X509_STORE_CTX *c,STACK /* X509 */ *sk);
 312
 313 #else
 314
 315 #ifdef HEADER_LHASH_H
 316 X509_OBJECT *X509_OBJECT_retrieve_by_subject();
 317 #endif
 318 void X509_OBJECT_up_ref_count();
 319 void X509_OBJECT_free_contents();
 320 X509_STORE *X509_STORE_new();
 321 void X509_STORE_free();
 322
 323 void X509_STORE_CTX_init();
 324 void X509_STORE_CTX_cleanup();
 325
 326 X509_LOOKUP *X509_STORE_add_lookup();
 327
 328 X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir();
 329 X509_LOOKUP_METHOD *X509_LOOKUP_file();
 330
 331 int X509_STORE_add_cert();
 332 int X509_STORE_add_crl();
 333
 334 int X509_STORE_get_by_subject();
 335
 336 int X509_LOOKUP_ctrl();
 337
 338 #ifndef NO_STDIO
 339 int X509_load_cert_file();
 340 int X509_load_crl_file();
 341 #endif
 342
 343 void X509v3_cleanup_extensions();
 344 int X509v3_add_extension();
 345 int X509v3_add_netscape_extensions();
 346 int X509v3_add_standard_extensions();
 347
 348 X509_LOOKUP *X509_LOOKUP_new();
 349 void X509_LOOKUP_free();
 350 int X509_LOOKUP_init();
 351 int X509_LOOKUP_by_subject();
 352 int X509_LOOKUP_by_issuer_serial();
 353 int X509_LOOKUP_by_fingerprint();
 354 int X509_LOOKUP_by_alias();
 355 int X509_LOOKUP_shutdown();
 356
 357 #ifndef NO_STDIO
 358 int     X509_STORE_load_locations ();
 359 int     X509_STORE_set_default_paths();
 360 #endif
 361
 362 int X509_STORE_CTX_get_ex_new_index();
 363 int     X509_STORE_CTX_set_ex_data();
 364 char *  X509_STORE_CTX_get_ex_data();
 365 int     X509_STORE_CTX_get_error();
 366 void    X509_STORE_CTX_set_error();
 367 int     X509_STORE_CTX_get_error_depth();
 368 X509 *  X509_STORE_CTX_get_current_cert();
 369 STACK * X509_STORE_CTX_get_chain();
 370 void    X509_STORE_CTX_set_cert();
 371 void    X509_STORE_CTX_set_chain();
 372
 373 #endif
 374
 375 #ifdef  __cplusplus
 376 }
 377 #endif
 378 #endif
 379