engines/e_capi.c

   1 /* engines/e_capi.c */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   3  * project.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  */
  53
  54
  55 #include <stdio.h>
  56 #include <string.h>
  57 #include <openssl/crypto.h>
  58 #include <openssl/buffer.h>
  59 #include <openssl/engine.h>
  60 #include <openssl/rsa.h>
  61 #include <openssl/bn.h>
  62 #include <openssl/pem.h>
  63
  64 #ifdef OPENSSL_SYS_WIN32
  65 #ifndef OPENSSL_NO_CAPIENG
  66
  67 #ifndef _WIN32_WINNT
  68 #define _WIN32_WINNT 0x400
  69 #endif
  70
  71 #include <windows.h>
  72 #include <wincrypt.h>
  73
  74 #include "e_capi_err.h"
  75 #include "e_capi_err.c"
  76
  77
  78 static const char *engine_capi_id = "capi";
  79 static const char *engine_capi_name = "CryptoAPI ENGINE";
  80
  81 typedef struct CAPI_CTX_st CAPI_CTX;
  82 typedef struct CAPI_KEY_st CAPI_KEY;
  83
  84 static void capi_addlasterror(void);
  85 static void capi_adderror(DWORD err);
  86
  87 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...);
  88
  89 static int capi_list_providers(CAPI_CTX *ctx, BIO *out);
  90 static int capi_list_containers(CAPI_CTX *ctx, BIO *out);
  91 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *storename);
  92 void capi_free_key(CAPI_KEY *key);
  93
  94 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore);
  95
  96 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id);
  97
  98 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
  99         UI_METHOD *ui_method, void *callback_data);
 100 static int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 101              unsigned char *sigret, unsigned int *siglen, const RSA *rsa);
 102 static int capi_rsa_priv_enc(int flen, const unsigned char *from,
 103                 unsigned char *to, RSA *rsa, int padding);
 104 static int capi_rsa_priv_dec(int flen, const unsigned char *from,
 105                 unsigned char *to, RSA *rsa, int padding);
 106 static int capi_rsa_free(RSA *rsa);
 107
 108 /* This structure contains CAPI ENGINE specific data:
 109  * it contains various global options and affects how
 110  * other functions behave.
 111  */
 112
 113 #define CAPI_DBG_TRACE  2
 114 #define CAPI_DBG_ERROR  1
 115
 116 struct CAPI_CTX_st {
 117         int debug_level;
 118         char *debug_file;
 119         /* Parameters to use for container lookup */
 120         DWORD keytype;
 121         LPTSTR cspname;
 122         DWORD csptype;
 123         /* Certificate store name to use */
 124         LPTSTR storename;
 125
 126 /* Lookup string meanings in load_private_key */
 127 /* Substring of subject: uses "storename" */
 128 #define CAPI_LU_SUBSTR          0
 129 /* Friendly name: uses storename */
 130 #define CAPI_LU_FNAME           1
 131 /* Container name: uses cspname, keytype */
 132 #define CAPI_LU_CONTNAME        2
 133         int lookup_method;
 134 /* Info to dump with dumpcerts option */
 135 /* Issuer and serial name strings */
 136 #define CAPI_DMP_SUMMARY        0x1
 137 /* Friendly name */
 138 #define CAPI_DMP_FNAME          0x2
 139 /* Full X509_print dump */
 140 #define CAPI_DMP_FULL           0x4
 141 /* Dump PEM format certificate */
 142 #define CAPI_DMP_PEM            0x8
 143 /* Dump pseudo key (if possible) */
 144 #define CAPI_DMP_PSKEY          0x10
 145 /* Dump key info (if possible) */
 146 #define CAPI_DMP_PKEYINFO       0x20
 147
 148         DWORD dump_flags;
 149 };
 150
 151
 152 static CAPI_CTX *capi_ctx_new();
 153 static void capi_ctx_free(CAPI_CTX *ctx);
 154 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check);
 155 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx);
 156
 157 #define CAPI_CMD_LIST_CERTS                     ENGINE_CMD_BASE
 158 #define CAPI_CMD_LOOKUP_CERT            (ENGINE_CMD_BASE + 1)
 159 #define CAPI_CMD_DEBUG_LEVEL            (ENGINE_CMD_BASE + 2)
 160 #define CAPI_CMD_DEBUG_FILE                     (ENGINE_CMD_BASE + 3)
 161 #define CAPI_CMD_KEYTYPE                        (ENGINE_CMD_BASE + 4)
 162 #define CAPI_CMD_LIST_CSPS                      (ENGINE_CMD_BASE + 5)
 163 #define CAPI_CMD_SET_CSP_IDX            (ENGINE_CMD_BASE + 6)
 164 #define CAPI_CMD_SET_CSP_NAME           (ENGINE_CMD_BASE + 7)
 165 #define CAPI_CMD_SET_CSP_TYPE           (ENGINE_CMD_BASE + 8)
 166 #define CAPI_CMD_LIST_CONTAINERS        (ENGINE_CMD_BASE + 9)
 167 #define CAPI_CMD_LIST_OPTIONS           (ENGINE_CMD_BASE + 10)
 168 #define CAPI_CMD_LOOKUP_METHOD          (ENGINE_CMD_BASE + 11)
 169
 170 static const ENGINE_CMD_DEFN capi_cmd_defns[] = {
 171         {CAPI_CMD_LIST_CERTS,
 172                 "list_certs",
 173                 "List all certificates in store",
 174                 ENGINE_CMD_FLAG_NO_INPUT},
 175         {CAPI_CMD_LOOKUP_CERT,
 176                 "lookup_cert",
 177                 "Lookup and output certificates",
 178                 ENGINE_CMD_FLAG_STRING},
 179         {CAPI_CMD_DEBUG_LEVEL,
 180                 "debug_level",
 181                 "debug level (1=errors, 2=trace)",
 182                 ENGINE_CMD_FLAG_NUMERIC},
 183         {CAPI_CMD_DEBUG_FILE,
 184                 "debug_file",
 185                 "debugging filename)",
 186                 ENGINE_CMD_FLAG_STRING},
 187         {CAPI_CMD_KEYTYPE,
 188                 "key_type",
 189                 "Key type: 1=AT_KEYEXCHANGE (default), 2=AT_SIGNATURE",
 190                 ENGINE_CMD_FLAG_NUMERIC},
 191         {CAPI_CMD_LIST_CSPS,
 192                 "list_csps",
 193                 "List all CSPs",
 194                 ENGINE_CMD_FLAG_NO_INPUT},
 195         {CAPI_CMD_SET_CSP_IDX,
 196                 "csp_idx",
 197                 "Set CSP by index",
 198                 ENGINE_CMD_FLAG_NUMERIC},
 199         {CAPI_CMD_SET_CSP_NAME,
 200                 "csp_name",
 201                 "Set CSP name, (default CSP used if not specified)",
 202                 ENGINE_CMD_FLAG_STRING},
 203         {CAPI_CMD_SET_CSP_TYPE,
 204                 "csp_type",
 205                 "Set CSP type, (default RSA_PROV_FULL)",
 206                 ENGINE_CMD_FLAG_NUMERIC},
 207         {CAPI_CMD_LIST_CONTAINERS,
 208                 "list_containers",
 209                 "list container names",
 210                 ENGINE_CMD_FLAG_NO_INPUT},
 211         {CAPI_CMD_LIST_OPTIONS,
 212                 "list_options",
 213                 "Set list options (1=summary,2=friendly name, 4=full printout, 8=PEM output, 16=XXX, "
 214                 "32=private key info)",
 215                 ENGINE_CMD_FLAG_NUMERIC},
 216         {CAPI_CMD_LOOKUP_METHOD,
 217                 "lookup_method",
 218                 "Set key lookup method (1=substring, 2=friendlyname, 3=container name)",
 219                 ENGINE_CMD_FLAG_NUMERIC},
 220
 221         {0, NULL, NULL, 0}
 222         };
 223
 224 static int capi_idx = -1;
 225 static int rsa_capi_idx = -1;
 226
 227 static int capi_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
 228 {
 229         int ret = 1;
 230         CAPI_CTX *ctx;
 231         BIO *out;
 232         if (capi_idx == -1)
 233                 {
 234                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_ENGINE_NOT_INITIALIZED);
 235                 return 0;
 236                 }
 237         ctx = ENGINE_get_ex_data(e, capi_idx);
 238         out = BIO_new_fp(stdout, BIO_NOCLOSE);
 239         switch (cmd)
 240                 {
 241                 case CAPI_CMD_LIST_CSPS:
 242                 ret = capi_list_providers(ctx, out);
 243                 break;
 244
 245                 case CAPI_CMD_LIST_CERTS:
 246                 ret = capi_list_certs(ctx, out, NULL);
 247                 break;
 248
 249                 case CAPI_CMD_LOOKUP_CERT:
 250                 ret = capi_list_certs(ctx, out, p);
 251                 break;
 252
 253                 case CAPI_CMD_LIST_CONTAINERS:
 254                 ret = capi_list_containers(ctx, out);
 255                 break;
 256
 257                 case CAPI_CMD_DEBUG_LEVEL:
 258                 ctx->debug_level = (int)i;
 259                 CAPI_trace(ctx, "Setting debug level to %d\n", ctx->debug_level);
 260                 break;
 261
 262                 case CAPI_CMD_DEBUG_FILE:
 263                 ctx->debug_file = BUF_strdup(p);
 264                 CAPI_trace(ctx, "Setting debug file to %s\n", ctx->debug_file);
 265                 break;
 266
 267                 case CAPI_CMD_KEYTYPE:
 268                 ctx->keytype = i;
 269                 CAPI_trace(ctx, "Setting key type to %d\n", ctx->keytype);
 270                 break;
 271
 272                 case CAPI_CMD_SET_CSP_IDX:
 273                 ret = capi_ctx_set_provname_idx(ctx, i);
 274                 break;
 275
 276                 case CAPI_CMD_LIST_OPTIONS:
 277                 ctx->dump_flags = i;
 278                 break;
 279
 280                 case CAPI_CMD_LOOKUP_METHOD:
 281                 if (i < 1 || i > 3)
 282                         {
 283                         CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_INVALID_LOOKUP_METHOD);
 284                         return 0;
 285                         }
 286                 ctx->lookup_method = i;
 287                 break;
 288
 289                 case CAPI_CMD_SET_CSP_NAME:
 290                 ret = capi_ctx_set_provname(ctx, p, ctx->csptype, 1);
 291                 break;
 292
 293                 case CAPI_CMD_SET_CSP_TYPE:
 294                 ctx->csptype = i;
 295                 break;
 296
 297                 default:
 298                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_UNKNOWN_COMMAND);
 299                 ret = 0;
 300         }
 301
 302         BIO_free(out);
 303         return ret;
 304
 305 }
 306
 307 static RSA_METHOD capi_rsa_method =
 308         {
 309         "CryptoAPI RSA method",
 310         0,                              /* pub_enc */
 311         0,                              /* pub_dec */
 312         capi_rsa_priv_enc,      /* priv_enc */
 313         capi_rsa_priv_dec,      /* priv_dec */
 314         0,                              /* rsa_mod_exp */
 315         0,                              /* bn_mod_exp */
 316         0,                              /* init */
 317         capi_rsa_free,  /* finish */
 318         RSA_FLAG_SIGN_VER, /* flags */
 319         NULL,                   /* app_data */
 320         capi_rsa_sign,  /* rsa_sign */
 321         0                               /* rsa_verify */
 322         };
 323
 324 static void capi_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad,
 325         int ind,long argl, void *argp)
 326         {
 327 /*fprintf(stderr, "Called capi_ex_free obj=%lx, idx=%d, item=%lx\n", obj, ind, item);*/
 328         capi_ctx_free(item);
 329         }
 330
 331 static void capi_rsa_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad,
 332         int ind,long argl, void *argp)
 333         {
 334 /*fprintf(stderr, "Called capi_rsa_free_key\n");*/
 335
 336         capi_free_key(item);
 337         }
 338
 339 static int capi_init(ENGINE *e)
 340         {
 341         CAPI_CTX *ctx;
 342         const RSA_METHOD *ossl_meth;
 343         capi_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, /*capi_ex_free*/ 0);
 344
 345         ctx = capi_ctx_new();
 346         if (!ctx || (capi_idx < 0))
 347                 goto memerr;
 348
 349         ENGINE_set_ex_data(e, capi_idx, ctx);
 350         /* Setup RSA_METHOD */
 351         rsa_capi_idx = RSA_get_ex_new_index(0, NULL, NULL, NULL, /*capi_rsa_ex_free*/ 0);
 352         ossl_meth = RSA_PKCS1_SSLeay();
 353         capi_rsa_method.rsa_pub_enc = ossl_meth->rsa_pub_enc;
 354         capi_rsa_method.rsa_pub_dec = ossl_meth->rsa_pub_dec;
 355         capi_rsa_method.rsa_mod_exp = ossl_meth->rsa_mod_exp;
 356         capi_rsa_method.bn_mod_exp = ossl_meth->bn_mod_exp;
 357
 358         return 1;
 359
 360         memerr:
 361         CAPIerr(CAPI_F_CAPI_INIT, ERR_R_MALLOC_FAILURE);
 362         return 0;
 363
 364         return 1;
 365         }
 366
 367 static int capi_destroy(ENGINE *e)
 368         {
 369
 370         ERR_unload_CAPI_strings();
 371         return 1;
 372         }
 373
 374 static int capi_finish(ENGINE *e)
 375         {
 376         CAPI_CTX *ctx;
 377         ctx = ENGINE_get_ex_data(e, capi_idx);
 378         capi_ctx_free(ctx);
 379         ENGINE_set_ex_data(e, capi_idx, NULL);
 380         return 1;
 381         }
 382
 383
 384 /* CryptoAPI key application data. This contains
 385  * a handle to the private key container (for sign operations)
 386  * and a handle to the key (for decrypt operations).
 387  */
 388
 389 struct CAPI_KEY_st
 390         {
 391         HCRYPTPROV hprov;
 392         HCRYPTKEY key;
 393         };
 394
 395 static int bind_capi(ENGINE *e)
 396         {
 397         if (!ENGINE_set_id(e, engine_capi_id)
 398                 || !ENGINE_set_name(e, engine_capi_name)
 399                 || !ENGINE_set_init_function(e, capi_init)
 400                 || !ENGINE_set_finish_function(e, capi_finish)
 401                 || !ENGINE_set_destroy_function(e, capi_destroy)
 402                 || !ENGINE_set_RSA(e, &capi_rsa_method)
 403                 || !ENGINE_set_load_privkey_function(e, capi_load_privkey)
 404                 || !ENGINE_set_cmd_defns(e, capi_cmd_defns)
 405                 || !ENGINE_set_ctrl_function(e, capi_ctrl))
 406                         return 0;
 407         ERR_load_CAPI_strings();
 408
 409         return 1;
 410
 411         }
 412
 413 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
 414 static int bind_helper(ENGINE *e, const char *id)
 415         {
 416         if(id && (strcmp(id, engine_capi_id) != 0))
 417                 return 0;
 418         if(!bind_capi(e))
 419                 return 0;
 420         return 1;
 421         }
 422 IMPLEMENT_DYNAMIC_CHECK_FN()
 423 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
 424 #else
 425 static ENGINE *engine_capi(void)
 426         {
 427         ENGINE *ret = ENGINE_new();
 428         if(!ret)
 429                 return NULL;
 430         if(!bind_capi(ret))
 431                 {
 432                 ENGINE_free(ret);
 433                 return NULL;
 434                 }
 435         return ret;
 436         }
 437
 438 void ENGINE_load_capi(void)
 439         {
 440         /* Copied from eng_[openssl|dyn].c */
 441         ENGINE *toadd = engine_capi();
 442         if(!toadd) return;
 443         ENGINE_add(toadd);
 444         ENGINE_free(toadd);
 445         ERR_clear_error();
 446         }
 447 #endif
 448
 449 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
 450         UI_METHOD *ui_method, void *callback_data)
 451         {
 452         EVP_PKEY *ret = NULL;
 453         CAPI_CTX *ctx;
 454         CAPI_KEY *key;
 455         unsigned char *pubkey = NULL;
 456         DWORD len, i, rsa_modlen;
 457         BLOBHEADER *bh;
 458         RSAPUBKEY *rp;
 459         unsigned char *rsa_modulus;
 460         RSA *rkey = NULL;
 461         ctx = ENGINE_get_ex_data(eng, capi_idx);
 462
 463         if (!ctx)
 464                 {
 465                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_CANT_FIND_CAPI_CONTEXT);
 466                 return NULL;
 467                 }
 468
 469         key = capi_find_key(ctx, key_id);
 470
 471         if (!key)
 472                 return NULL;
 473
 474         len = 0;
 475         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, NULL, &len))
 476                 {
 477                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_PUBKEY_EXPORT_LENGTH_ERROR);
 478                 capi_addlasterror();
 479                 return NULL;
 480                 }
 481
 482         pubkey = OPENSSL_malloc(len);
 483
 484         if (!pubkey)
 485                 goto memerr;
 486
 487         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, pubkey, &len))
 488                 {
 489                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_PUBKEY_EXPORT_ERROR);
 490                 capi_addlasterror();
 491                 goto err;
 492                 }
 493
 494         bh = (BLOBHEADER *)pubkey;
 495         if (bh->bType != PUBLICKEYBLOB)
 496                 {
 497                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_INVALID_PUBLIC_KEY_BLOB);
 498                 goto err;
 499                 }
 500         if (bh->aiKeyAlg == CALG_RSA_SIGN || bh->aiKeyAlg == CALG_RSA_KEYX)
 501                 {
 502                 rp = (RSAPUBKEY *)(bh + 1);
 503                 rsa_modulus = (unsigned char *)(rp + 1);
 504                 rkey = RSA_new_method(eng);
 505                 if (!rkey)
 506                         goto memerr;
 507
 508                 rkey->e = BN_new();
 509                 rkey->n = BN_new();
 510
 511                 if (!rkey->e || !rkey->n)
 512                         goto memerr;
 513
 514                 if (!BN_set_word(rkey->e, rp->pubexp))
 515                         goto memerr;
 516
 517                 rsa_modlen = rp->bitlen / 8;
 518
 519                 for(i = 0; i < rsa_modlen / 2; i++)
 520                         {
 521                         unsigned char c;
 522                         c = rsa_modulus[i];
 523                         rsa_modulus[i] = rsa_modulus[rsa_modlen - i - 1];
 524                         rsa_modulus[rsa_modlen - i - 1] = c;
 525                         }
 526
 527                 if (!BN_bin2bn(rsa_modulus, rsa_modlen, rkey->n))
 528                         goto memerr;
 529
 530                 RSA_set_ex_data(rkey, rsa_capi_idx, key);
 531
 532                 if (!(ret = EVP_PKEY_new()))
 533                         goto memerr;
 534
 535                 EVP_PKEY_assign_RSA(ret, rkey);
 536
 537
 538                 }
 539         else
 540                 {
 541                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_UNSUPPORTED_PUBLIC_KEY_ALGORITHM);
 542                 goto err;
 543                 }
 544
 545         err:
 546         if (pubkey)
 547                 OPENSSL_free(pubkey);
 548         if (!ret)
 549                 {
 550                 if (rkey)
 551                         RSA_free(rkey);
 552                 if (key)
 553                         capi_free_key(key);
 554                 }
 555
 556         return ret;
 557
 558 memerr:
 559         CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, ERR_R_MALLOC_FAILURE);
 560         goto err;
 561
 562         }
 563
 564 /* CryptoAPI RSA operations */
 565
 566 int capi_rsa_priv_enc(int flen, const unsigned char *from,
 567                 unsigned char *to, RSA *rsa, int padding)
 568         {
 569         CAPIerr(CAPI_F_CAPI_RSA_PRIV_ENC, CAPI_R_FUNCTION_NOT_SUPPORTED);
 570         return -1;
 571         }
 572
 573 int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 574              unsigned char *sigret, unsigned int *siglen, const RSA *rsa)
 575         {
 576         ALG_ID alg;
 577         HCRYPTHASH hash;
 578         DWORD slen;
 579         unsigned int i;
 580         int ret = -1;
 581         CAPI_KEY *capi_key;
 582         CAPI_CTX *ctx;
 583
 584         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 585
 586         CAPI_trace(ctx, "Called CAPI_rsa_sign()\n");
 587
 588         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 589         if (!capi_key)
 590                 {
 591                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_GET_KEY);
 592                 return -1;
 593                 }
 594 /* Convert the signature type to a CryptoAPI algorithm ID */
 595         switch(dtype) {
 596         case NID_sha1:
 597                 alg = CALG_SHA1;
 598                 break;
 599
 600         case NID_md5:
 601                 alg = CALG_MD5;
 602                 break;
 603
 604         case NID_md5_sha1:
 605                 alg = CALG_SSL3_SHAMD5;
 606                 break;
 607         default:
 608                 {
 609                 char algstr[10];
 610                 sprintf(algstr, "%lx", dtype);
 611                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_UNSUPPORTED_ALGORITHM_NID);
 612                 ERR_add_error_data(2, "NID=0x", algstr);
 613                 return -1;
 614                 }
 615         }
 616
 617
 618
 619 /* Create the hash object */
 620         if(!CryptCreateHash(capi_key->hprov, alg, 0, 0, &hash)) {
 621                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
 622                 capi_addlasterror();
 623                 return -1;
 624         }
 625 /* Set the hash value to the value passed */
 626
 627         if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)m, 0)) {
 628                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
 629                 capi_addlasterror();
 630                 goto err;
 631         }
 632
 633
 634 /* Finally sign it */
 635         slen = RSA_size(rsa);
 636         if(!CryptSignHash(hash, AT_KEYEXCHANGE, NULL, 0, sigret, &slen)) {
 637                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_ERROR_SIGNING_HASH);
 638                 capi_addlasterror();
 639                 goto err;
 640         } else {
 641                 ret = 1;
 642                 /* Inplace byte reversal of signature */
 643                 for(i = 0; i < slen / 2; i++) {
 644                         unsigned char c;
 645                         c = sigret[i];
 646                         sigret[i] = sigret[slen - i - 1];
 647                         sigret[slen - i - 1] = c;
 648                 }
 649                 *siglen = slen;
 650         }
 651
 652
 653         /* Now cleanup */
 654
 655 err:
 656         CryptDestroyHash(hash);
 657
 658         return ret;
 659 }
 660
 661 int capi_rsa_priv_dec(int flen, const unsigned char *from,
 662                 unsigned char *to, RSA *rsa, int padding)
 663 {
 664         int i;
 665         unsigned char *tmpbuf;
 666         CAPI_KEY *capi_key;
 667         CAPI_CTX *ctx;
 668         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 669
 670         CAPI_trace(ctx, "Called capi_rsa_priv_dec()\n");
 671
 672
 673         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 674         if (!capi_key)
 675                 {
 676                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_CANT_GET_KEY);
 677                 return -1;
 678                 }
 679
 680         if(padding != RSA_PKCS1_PADDING)
 681                 {
 682                 char errstr[10];
 683                 sprintf(errstr, "%d", padding);
 684                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_UNSUPPORTED_PADDING);
 685                 ERR_add_error_data(2, "padding=", errstr);
 686                 return -1;
 687                 }
 688
 689         /* Create temp reverse order version of input */
 690         if(!(tmpbuf = OPENSSL_malloc(flen)) )
 691                 {
 692                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, ERR_R_MALLOC_FAILURE);
 693                 return -1;
 694                 }
 695         for(i = 0; i < flen; i++) tmpbuf[flen - i - 1] = from[i];
 696
 697         /* Finally decrypt it */
 698         if(!CryptDecrypt(capi_key->key, 0, TRUE, 0, tmpbuf, &flen))
 699                 {
 700                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_DECRYPT_ERROR);
 701                 capi_addlasterror();
 702                 OPENSSL_free(tmpbuf);
 703                 return -1;
 704                 }
 705         else memcpy(to, tmpbuf, flen);
 706
 707         OPENSSL_free(tmpbuf);
 708
 709         return flen;
 710 }
 711
 712 static int capi_rsa_free(RSA *rsa)
 713         {
 714         CAPI_KEY *capi_key;
 715         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 716         capi_free_key(capi_key);
 717         RSA_set_ex_data(rsa, rsa_capi_idx, 0);
 718         return 1;
 719         }
 720
 721 static void capi_vtrace(CAPI_CTX *ctx, int level, char *format, va_list argptr)
 722         {
 723         BIO *out;
 724
 725         if (!ctx || (ctx->debug_level < level) || (!ctx->debug_file))
 726                 return;
 727         out = BIO_new_file(ctx->debug_file, "a+");
 728         BIO_vprintf(out, format, argptr);
 729         BIO_free(out);
 730         }
 731
 732 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...)
 733         {
 734         va_list args;
 735         va_start(args, format);
 736         capi_vtrace(ctx, CAPI_DBG_TRACE, format, args);
 737         va_end(args);
 738         }
 739
 740 static void capi_addlasterror(void)
 741         {
 742         capi_adderror(GetLastError());
 743         }
 744
 745 static void capi_adderror(DWORD err)
 746         {
 747         char errstr[10];
 748         sprintf(errstr, "%lX", err);
 749         ERR_add_error_data(2, "Error code= 0x", errstr);
 750         }
 751
 752 static char *wide_to_asc(LPWSTR wstr)
 753         {
 754         char *str;
 755         if (!wstr)
 756                 return NULL;
 757         str = OPENSSL_malloc(wcslen(wstr) + 1);
 758         if (!str)
 759                 {
 760                 CAPIerr(CAPI_F_WIDE_TO_ASC, ERR_R_MALLOC_FAILURE);
 761                 return NULL;
 762                 }
 763         sprintf(str, "%S", wstr);
 764         return str;
 765         }
 766
 767 static int capi_get_provname(CAPI_CTX *ctx, LPSTR *pname, DWORD *ptype, DWORD idx)
 768         {
 769         LPSTR name;
 770         DWORD len, err;
 771         CAPI_trace(ctx, "capi_get_provname, index=%d\n", idx);
 772         if (!CryptEnumProviders(idx, NULL, 0, ptype, NULL, &len))
 773                 {
 774                 err = GetLastError();
 775                 if (err == ERROR_NO_MORE_ITEMS)
 776                         return 2;
 777                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
 778                 capi_adderror(err);
 779                 return 0;
 780                 }
 781         name = OPENSSL_malloc(len);
 782                 if (!CryptEnumProviders(idx, NULL, 0, ptype, name, &len))
 783                 {
 784                 err = GetLastError();
 785                 if (err == ERROR_NO_MORE_ITEMS)
 786                         return 2;
 787                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
 788                 capi_adderror(err);
 789                 return 0;
 790                 }
 791         *pname = name;
 792         CAPI_trace(ctx, "capi_get_provname, returned name=%s, type=%d\n", name, *ptype);
 793
 794         return 1;
 795         }
 796
 797 static int capi_list_providers(CAPI_CTX *ctx, BIO *out)
 798         {
 799         DWORD idx, ptype;
 800         int ret;
 801         LPTSTR provname = NULL;
 802         CAPI_trace(ctx, "capi_list_providers\n");
 803         BIO_printf(out, "Available CSPs:\n");
 804         for(idx = 0; ; idx++)
 805                 {
 806                 ret = capi_get_provname(ctx, &provname, &ptype, idx);
 807                 if (ret == 2)
 808                         break;
 809                 if (ret == 0)
 810                         break;
 811                 BIO_printf(out, "%d. %s, type %d\n", idx, provname, ptype);
 812                 OPENSSL_free(provname);
 813                 }
 814         return 1;
 815         }
 816
 817 static int capi_list_containers(CAPI_CTX *ctx, BIO *out)
 818         {
 819         int ret = 1;
 820         HCRYPTPROV hprov;
 821         DWORD err, idx, flags, buflen = 0, clen;
 822         LPSTR cname;
 823         CAPI_trace(ctx, "Listing containers CSP=%s, type = %d\n", ctx->cspname, ctx->csptype);
 824         if (!CryptAcquireContext(&hprov, NULL, ctx->cspname, ctx->csptype, CRYPT_VERIFYCONTEXT))
 825                 {
 826                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
 827                 capi_addlasterror();
 828                 return 0;
 829                 }
 830         if (!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, NULL, &buflen, CRYPT_FIRST))
 831                 {
 832                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
 833                 capi_addlasterror();
 834                 return 0;
 835                 }
 836         CAPI_trace(ctx, "Got max container len %d\n", buflen);
 837         if (buflen == 0)
 838                 buflen = 1024;
 839         cname = OPENSSL_malloc(buflen);
 840         if (!cname)
 841                 {
 842                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, ERR_R_MALLOC_FAILURE);
 843                 goto err;
 844                 }
 845
 846         for (idx = 0;;idx++)
 847                 {
 848                         clen = buflen;
 849                         cname[0] = 0;
 850
 851                         if (idx == 0)
 852                                 flags = CRYPT_FIRST;
 853                         else
 854                                 flags = 0;
 855                         if(!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, cname, &clen, flags))
 856                                 {
 857                                 err = GetLastError();
 858                                 if (err == ERROR_NO_MORE_ITEMS)
 859                                         goto done;
 860                                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
 861                                 capi_adderror(err);
 862                                 goto err;
 863                                 }
 864                         CAPI_trace(ctx, "Container name %s, len=%d, index=%d, flags=%d\n", cname, clen, idx, flags);
 865                         if (!cname[0] && (clen == buflen))
 866                                 {
 867                                 CAPI_trace(ctx, "Enumerate bug: using workaround\n");
 868                                 goto done;
 869                                 }
 870                         BIO_printf(out, "%d. %s\n", idx, cname);
 871                 }
 872         err:
 873
 874         ret = 0;
 875
 876         done:
 877         if (cname)
 878                 OPENSSL_free(cname);
 879         CryptReleaseContext(hprov, 0);
 880
 881         return ret;
 882         }
 883
 884 CRYPT_KEY_PROV_INFO *capi_get_prov_info(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
 885         {
 886         DWORD len;
 887         CRYPT_KEY_PROV_INFO *pinfo;
 888
 889         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, NULL, &len))
 890                 return NULL;
 891         pinfo = OPENSSL_malloc(len);
 892         if (!pinfo)
 893                 {
 894                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, ERR_R_MALLOC_FAILURE);
 895                 return NULL;
 896                 }
 897         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, pinfo, &len))
 898                 {
 899                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, CAPI_R_ERROR_GETTING_KEY_PROVIDER_INFO);
 900                 capi_addlasterror();
 901                 OPENSSL_free(pinfo);
 902                 return NULL;
 903                 }
 904         return pinfo;
 905         }
 906
 907 static void capi_dump_prov_info(CAPI_CTX *ctx, BIO *out, CRYPT_KEY_PROV_INFO *pinfo)
 908         {
 909         char *provname = NULL, *contname = NULL;
 910         if (!pinfo)
 911                 {
 912                 BIO_printf(out, "  No Private Key\n");
 913                 return;
 914                 }
 915         provname = wide_to_asc(pinfo->pwszProvName);
 916         contname = wide_to_asc(pinfo->pwszContainerName);
 917         if (!provname || !contname)
 918                 goto err;
 919
 920         BIO_printf(out, "  Private Key Info:\n");
 921         BIO_printf(out, "    Provider Name:  %s, Provider Type %d\n", provname, pinfo->dwProvType);
 922         BIO_printf(out, "    Container Name: %s, Key Type %d\n", contname, pinfo->dwKeySpec);
 923         err:
 924         if (provname)
 925                 OPENSSL_free(provname);
 926         if (contname)
 927                 OPENSSL_free(contname);
 928         }
 929
 930 char * capi_cert_get_fname(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
 931         {
 932         LPWSTR wfname;
 933         DWORD dlen;
 934
 935         CAPI_trace(ctx, "capi_cert_get_fname\n");
 936         if (!CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, NULL, &dlen))
 937                 return NULL;
 938         wfname = OPENSSL_malloc(dlen);
 939         if (CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, wfname, &dlen))
 940                 {
 941                 char *fname = wide_to_asc(wfname);
 942                 OPENSSL_free(wfname);
 943                 return fname;
 944                 }
 945         CAPIerr(CAPI_F_CAPI_CERT_GET_FNAME, CAPI_R_ERROR_GETTING_FRIENDLY_NAME);
 946         capi_addlasterror();
 947
 948         OPENSSL_free(wfname);
 949         return NULL;
 950         }
 951
 952
 953 void capi_dump_cert(CAPI_CTX *ctx, BIO *out, PCCERT_CONTEXT cert)
 954         {
 955         X509 *x;
 956         unsigned char *p;
 957         unsigned long flags = ctx->dump_flags;
 958         if (flags & CAPI_DMP_FNAME)
 959                 {
 960                 char *fname;
 961                 fname = capi_cert_get_fname(ctx, cert);
 962                 if (fname)
 963                         {
 964                         BIO_printf(out, "  Friendly Name \"%s\"\n", fname);
 965                         OPENSSL_free(fname);
 966                         }
 967                 else
 968                         BIO_printf(out, "  <No Friendly Name>\n");
 969                 }
 970
 971         p = cert->pbCertEncoded;
 972         x = d2i_X509(NULL, &p, cert->cbCertEncoded);
 973         if (!x)
 974                 BIO_printf(out, "  <Can't parse certificate>\n");
 975         if (flags & CAPI_DMP_SUMMARY)
 976                 {
 977                 BIO_printf(out, "  Subject: ");
 978                 X509_NAME_print_ex(out, X509_get_subject_name(x), 0, XN_FLAG_ONELINE);
 979                 BIO_printf(out, "\n  Issuer: ");
 980                 X509_NAME_print_ex(out, X509_get_issuer_name(x), 0, XN_FLAG_ONELINE);
 981                 BIO_printf(out, "\n");
 982                 }
 983         if (flags & CAPI_DMP_FULL)
 984                 X509_print_ex(out, x, XN_FLAG_ONELINE,0);
 985
 986         if (flags & CAPI_DMP_PKEYINFO)
 987                 {
 988                 CRYPT_KEY_PROV_INFO *pinfo;
 989                 pinfo = capi_get_prov_info(ctx, cert);
 990                 capi_dump_prov_info(ctx, out, pinfo);
 991                 if (pinfo)
 992                         OPENSSL_free(pinfo);
 993                 }
 994
 995         if (flags & CAPI_DMP_PEM)
 996                 PEM_write_bio_X509(out, x);
 997         X509_free(x);
 998         }
 999
1000 HCERTSTORE capi_open_store(CAPI_CTX *ctx, char *storename)
1001         {
1002         HCERTSTORE hstore;
1003
1004         if (!storename)
1005                 storename = ctx->storename;
1006         if (!storename)
1007                 storename = "MY";
1008         CAPI_trace(ctx, "Opening certificate store %s\n", storename);
1009
1010         hstore = CertOpenSystemStore(0, storename);
1011         if (!hstore)
1012                 {
1013                 CAPIerr(CAPI_F_CAPI_OPEN_STORE, CAPI_R_ERROR_OPENING_STORE);
1014                 capi_addlasterror();
1015                 }
1016         return hstore;
1017         }
1018
1019 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *id)
1020         {
1021         char *storename;
1022         int idx;
1023         int ret = 1;
1024         HCERTSTORE hstore;
1025         PCCERT_CONTEXT cert = NULL;
1026
1027         storename = ctx->storename;
1028         if (!storename)
1029                 storename = "MY";
1030         CAPI_trace(ctx, "Listing certs for store %s\n", storename);
1031
1032         hstore = capi_open_store(ctx, storename);
1033         if (!hstore)
1034                 return 0;
1035         if (id)
1036                 {
1037                 cert = capi_find_cert(ctx, id, hstore);
1038                 if (!cert)
1039                         {
1040                         ret = 0;
1041                         goto err;
1042                         }
1043                 capi_dump_cert(ctx, out, cert);
1044                 CertFreeCertificateContext(cert);
1045                 }
1046         else
1047                 {
1048                 for(idx = 0;;idx++)
1049                         {
1050                         LPWSTR fname = NULL;
1051                         cert = CertEnumCertificatesInStore(hstore, cert);
1052                         if (!cert)
1053                                 break;
1054                         BIO_printf(out, "Certificate %d\n", idx);
1055                         capi_dump_cert(ctx, out, cert);
1056                         }
1057                 }
1058         err:
1059         CertCloseStore(hstore, 0);
1060         return ret;
1061         }
1062
1063 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore)
1064         {
1065         PCCERT_CONTEXT cert = NULL;
1066         char *fname = NULL;
1067         int match;
1068         switch(ctx->lookup_method)
1069                 {
1070                 case CAPI_LU_SUBSTR:
1071                         return CertFindCertificateInStore(hstore, X509_ASN_ENCODING, 0,
1072                                                                                         CERT_FIND_SUBJECT_STR_A, id, NULL);
1073                 case CAPI_LU_FNAME:
1074                         for(;;)
1075                                 {
1076                                 cert = CertEnumCertificatesInStore(hstore, cert);
1077                                 if (!cert)
1078                                         return NULL;
1079                                 fname = capi_cert_get_fname(ctx, cert);
1080                                 if (fname)
1081                                         {
1082                                         if (strcmp(fname, id))
1083                                                 match = 0;
1084                                         else
1085                                                 match = 1;
1086                                         OPENSSL_free(fname);
1087                                         if (match)
1088                                                 return cert;
1089                                         }
1090                                 }
1091                 default:
1092                         return NULL;
1093                 }
1094         }
1095
1096 static CAPI_KEY *capi_get_key(CAPI_CTX *ctx, const char *contname, char *provname, DWORD ptype, DWORD keyspec)
1097         {
1098         CAPI_KEY *key;
1099         key = OPENSSL_malloc(sizeof(CAPI_KEY));
1100         CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n",
1101                                                                                                                         contname, provname, ptype);
1102         if (!CryptAcquireContext(&key->hprov, contname, provname, ptype, 0))
1103                 {
1104                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1105                 capi_addlasterror();
1106                 goto err;
1107                 }
1108         if (!CryptGetUserKey(key->hprov, keyspec, &key->key))
1109                 {
1110                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_GETUSERKEY_ERROR);
1111                 capi_addlasterror();
1112                 CryptReleaseContext(key->hprov, 0);
1113                 goto err;
1114                 }
1115         return key;
1116
1117         err:
1118         OPENSSL_free(key);
1119         return NULL;
1120         }
1121
1122 static CAPI_KEY *capi_get_cert_key(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1123         {
1124         CAPI_KEY *key;
1125         CRYPT_KEY_PROV_INFO *pinfo = NULL;
1126         char *provname = NULL, *contname = NULL;
1127         pinfo = capi_get_prov_info(ctx, cert);
1128         if (!pinfo)
1129                 goto err;
1130         provname = wide_to_asc(pinfo->pwszProvName);
1131         contname = wide_to_asc(pinfo->pwszContainerName);
1132         if (!provname || !contname)
1133                 return 0;
1134
1135         key = capi_get_key(ctx, contname, provname, pinfo->dwProvType, pinfo->dwKeySpec);
1136
1137         err:
1138         if (pinfo)
1139                 OPENSSL_free(pinfo);
1140         if (provname)
1141                 OPENSSL_free(provname);
1142         if (contname)
1143                 OPENSSL_free(contname);
1144         return key;
1145         }
1146
1147 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id)
1148         {
1149         PCCERT_CONTEXT cert;
1150         HCERTSTORE hstore;
1151         CAPI_KEY *key = NULL;
1152         switch (ctx->lookup_method)
1153                 {
1154                 case CAPI_LU_SUBSTR:
1155                 case CAPI_LU_FNAME:
1156                 hstore = capi_open_store(ctx, NULL);
1157                 if (!hstore)
1158                         return NULL;
1159                 cert = capi_find_cert(ctx, id, hstore);
1160                 if (cert)
1161                         {
1162                         key = capi_get_cert_key(ctx, cert);
1163                         CertFreeCertificateContext(cert);
1164                         }
1165                 CertCloseStore(hstore, 0);
1166                 break;
1167
1168                 case CAPI_LU_CONTNAME:
1169                 key = capi_get_key(ctx, id, ctx->cspname, ctx->csptype, ctx->keytype);
1170                 break;
1171                 }
1172
1173         return key;
1174         }
1175
1176 void capi_free_key(CAPI_KEY *key)
1177         {
1178         if (!key)
1179                 return;
1180         CryptDestroyKey(key->key);
1181         CryptReleaseContext(key->hprov, 0);
1182         OPENSSL_free(key);
1183         }
1184
1185
1186 /* Initialize a CAPI_CTX structure */
1187
1188 static CAPI_CTX *capi_ctx_new()
1189         {
1190         CAPI_CTX *ctx;
1191         ctx = OPENSSL_malloc(sizeof(CAPI_CTX));
1192         if (!ctx)
1193                 {
1194                 CAPIerr(CAPI_F_CAPI_CTX_NEW, ERR_R_MALLOC_FAILURE);
1195                 return NULL;
1196                 }
1197         ctx->cspname = NULL;
1198         ctx->csptype = PROV_RSA_FULL;
1199         ctx->dump_flags = CAPI_DMP_SUMMARY|CAPI_DMP_FNAME;
1200         ctx->keytype = AT_KEYEXCHANGE;
1201         ctx->storename = NULL;
1202         ctx->lookup_method = CAPI_LU_SUBSTR;
1203         ctx->debug_level = 0;
1204         ctx->debug_file = NULL;
1205         return ctx;
1206         }
1207
1208 static void capi_ctx_free(CAPI_CTX *ctx)
1209         {
1210         CAPI_trace(ctx, "Calling capi_ctx_free with %lx\n", ctx);
1211         if (!ctx)
1212                 return;
1213         if (ctx->cspname)
1214                 OPENSSL_free(ctx->cspname);
1215         if (ctx->debug_file)
1216                 OPENSSL_free(ctx->debug_file);
1217         if (ctx->storename)
1218                 OPENSSL_free(ctx->storename);
1219         OPENSSL_free(ctx);
1220         }
1221
1222 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check)
1223         {
1224         CAPI_trace(ctx, "capi_ctx_set_provname, name=%s, type=%d\n", pname, type);
1225         if (check)
1226                 {
1227                 HCRYPTPROV hprov;
1228                 if (!CryptAcquireContext(&hprov, NULL, pname, type, CRYPT_VERIFYCONTEXT))
1229                         {
1230                         CAPIerr(CAPI_F_CAPI_CTX_SET_PROVNAME, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1231                         capi_addlasterror();
1232                         return 0;
1233                         }
1234                 CryptReleaseContext(hprov, 0);
1235                 }
1236         ctx->cspname = BUF_strdup(pname);
1237         ctx->csptype = type;
1238         return 1;
1239         }
1240
1241 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx)
1242         {
1243         LPSTR pname;
1244         DWORD type;
1245         if (capi_get_provname(ctx, &pname, &type, idx) != 1)
1246                 return 0;
1247         return capi_ctx_set_provname(ctx, pname, type, 0);
1248         }
1249
1250 #endif
1251 #endif