crypto/openssl-0.9.7e/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_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
  76 extern "C" {
  77 #endif
  78
  79 /* Outer object */
  80 typedef 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
  88 typedef 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 /*
  98 SSL_CTX -> X509_STORE
  99                 -> X509_LOOKUP
 100                         ->X509_LOOKUP_METHOD
 101                 -> X509_LOOKUP
 102                         ->X509_LOOKUP_METHOD
 103
 104 SSL     -> X509_STORE_CTX
 105                 ->X509_STORE
 106
 107 The X509_STORE holds the tables etc for verification stuff.
 108 A X509_STORE_CTX is used while validating a single certificate.
 109 The X509_STORE has X509_LOOKUPs for looking up certs.
 110 The X509_STORE then calls a function to actually verify the
 111 certificate 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
 120 typedef 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
 132 typedef struct x509_lookup_st X509_LOOKUP;
 133
 134 DECLARE_STACK_OF(X509_LOOKUP)
 135 DECLARE_STACK_OF(X509_OBJECT)
 136
 137 /* This is a static that defines the function interface */
 138 typedef 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. */
 161 struct 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. */
 199 struct 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. */
 212 struct 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
 310 /* The application is not happy */
 311 #define         X509_V_ERR_APPLICATION_VERIFICATION             50
 312
 313 /* Certificate verify flags */
 314
 315 /* Send issuer+subject checks to verify_cb */
 316 #define X509_V_FLAG_CB_ISSUER_CHECK             0x1
 317 /* Use check time instead of current time */
 318 #define X509_V_FLAG_USE_CHECK_TIME              0x2
 319 /* Lookup CRLs */
 320 #define X509_V_FLAG_CRL_CHECK                   0x4
 321 /* Lookup CRLs for whole chain */
 322 #define X509_V_FLAG_CRL_CHECK_ALL               0x8
 323 /* Ignore unhandled critical extensions */
 324 #define X509_V_FLAG_IGNORE_CRITICAL             0x10
 325 /* Disable workarounds for broken certificates */
 326 #define X509_V_FLAG_X509_STRICT                 0x20
 327
 328 int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
 329              X509_NAME *name);
 330 X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h,int type,X509_NAME *name);
 331 X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h, X509_OBJECT *x);
 332 void X509_OBJECT_up_ref_count(X509_OBJECT *a);
 333 void X509_OBJECT_free_contents(X509_OBJECT *a);
 334 X509_STORE *X509_STORE_new(void );
 335 void X509_STORE_free(X509_STORE *v);
 336
 337 void X509_STORE_set_flags(X509_STORE *ctx, long flags);
 338 int X509_STORE_set_purpose(X509_STORE *ctx, int purpose);
 339 int X509_STORE_set_trust(X509_STORE *ctx, int trust);
 340
 341 X509_STORE_CTX *X509_STORE_CTX_new(void);
 342
 343 int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
 344
 345 void X509_STORE_CTX_free(X509_STORE_CTX *ctx);
 346 int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
 347                          X509 *x509, STACK_OF(X509) *chain);
 348 void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk);
 349 void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);
 350
 351 X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m);
 352
 353 X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void);
 354 X509_LOOKUP_METHOD *X509_LOOKUP_file(void);
 355
 356 int X509_STORE_add_cert(X509_STORE *ctx, X509 *x);
 357 int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x);
 358
 359 int X509_STORE_get_by_subject(X509_STORE_CTX *vs,int type,X509_NAME *name,
 360         X509_OBJECT *ret);
 361
 362 int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
 363         long argl, char **ret);
 364
 365 #ifndef OPENSSL_NO_STDIO
 366 int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type);
 367 int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type);
 368 int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type);
 369 #endif
 370
 371
 372 X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method);
 373 void X509_LOOKUP_free(X509_LOOKUP *ctx);
 374 int X509_LOOKUP_init(X509_LOOKUP *ctx);
 375 int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
 376         X509_OBJECT *ret);
 377 int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
 378         ASN1_INTEGER *serial, X509_OBJECT *ret);
 379 int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
 380         unsigned char *bytes, int len, X509_OBJECT *ret);
 381 int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str,
 382         int len, X509_OBJECT *ret);
 383 int X509_LOOKUP_shutdown(X509_LOOKUP *ctx);
 384
 385 #ifndef OPENSSL_NO_STDIO
 386 int     X509_STORE_load_locations (X509_STORE *ctx,
 387                 const char *file, const char *dir);
 388 int     X509_STORE_set_default_paths(X509_STORE *ctx);
 389 #endif
 390
 391 int X509_STORE_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
 392         CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
 393 int     X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx,int idx,void *data);
 394 void *  X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx,int idx);
 395 int     X509_STORE_CTX_get_error(X509_STORE_CTX *ctx);
 396 void    X509_STORE_CTX_set_error(X509_STORE_CTX *ctx,int s);
 397 int     X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx);
 398 X509 *  X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
 399 STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx);
 400 STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx);
 401 void    X509_STORE_CTX_set_cert(X509_STORE_CTX *c,X509 *x);
 402 void    X509_STORE_CTX_set_chain(X509_STORE_CTX *c,STACK_OF(X509) *sk);
 403 int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose);
 404 int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust);
 405 int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
 406                                 int purpose, int trust);
 407 void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, long flags);
 408 void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, long flags, time_t t);
 409 void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX *ctx,
 410                                   int (*verify_cb)(int, X509_STORE_CTX *));
 411
 412 #ifdef  __cplusplus
 413 }
 414 #endif
 415 #endif
 416