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 static int dsa_capi_idx = -1;
 227
 228 static int capi_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
 229 {
 230         int ret = 1;
 231         CAPI_CTX *ctx;
 232         BIO *out;
 233         if (capi_idx == -1)
 234                 {
 235                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_ENGINE_NOT_INITIALIZED);
 236                 return 0;
 237                 }
 238         ctx = ENGINE_get_ex_data(e, capi_idx);
 239         out = BIO_new_fp(stdout, BIO_NOCLOSE);
 240         switch (cmd)
 241                 {
 242                 case CAPI_CMD_LIST_CSPS:
 243                 ret = capi_list_providers(ctx, out);
 244                 break;
 245
 246                 case CAPI_CMD_LIST_CERTS:
 247                 ret = capi_list_certs(ctx, out, NULL);
 248                 break;
 249
 250                 case CAPI_CMD_LOOKUP_CERT:
 251                 ret = capi_list_certs(ctx, out, p);
 252                 break;
 253
 254                 case CAPI_CMD_LIST_CONTAINERS:
 255                 ret = capi_list_containers(ctx, out);
 256                 break;
 257
 258                 case CAPI_CMD_DEBUG_LEVEL:
 259                 ctx->debug_level = (int)i;
 260                 CAPI_trace(ctx, "Setting debug level to %d\n", ctx->debug_level);
 261                 break;
 262
 263                 case CAPI_CMD_DEBUG_FILE:
 264                 ctx->debug_file = BUF_strdup(p);
 265                 CAPI_trace(ctx, "Setting debug file to %s\n", ctx->debug_file);
 266                 break;
 267
 268                 case CAPI_CMD_KEYTYPE:
 269                 ctx->keytype = i;
 270                 CAPI_trace(ctx, "Setting key type to %d\n", ctx->keytype);
 271                 break;
 272
 273                 case CAPI_CMD_SET_CSP_IDX:
 274                 ret = capi_ctx_set_provname_idx(ctx, i);
 275                 break;
 276
 277                 case CAPI_CMD_LIST_OPTIONS:
 278                 ctx->dump_flags = i;
 279                 break;
 280
 281                 case CAPI_CMD_LOOKUP_METHOD:
 282                 if (i < 1 || i > 3)
 283                         {
 284                         CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_INVALID_LOOKUP_METHOD);
 285                         return 0;
 286                         }
 287                 ctx->lookup_method = i;
 288                 break;
 289
 290                 case CAPI_CMD_SET_CSP_NAME:
 291                 ret = capi_ctx_set_provname(ctx, p, ctx->csptype, 1);
 292                 break;
 293
 294                 case CAPI_CMD_SET_CSP_TYPE:
 295                 ctx->csptype = i;
 296                 break;
 297
 298                 default:
 299                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_UNKNOWN_COMMAND);
 300                 ret = 0;
 301         }
 302
 303         BIO_free(out);
 304         return ret;
 305
 306 }
 307
 308 static RSA_METHOD capi_rsa_method =
 309         {
 310         "CryptoAPI RSA method",
 311         0,                              /* pub_enc */
 312         0,                              /* pub_dec */
 313         capi_rsa_priv_enc,      /* priv_enc */
 314         capi_rsa_priv_dec,      /* priv_dec */
 315         0,                              /* rsa_mod_exp */
 316         0,                              /* bn_mod_exp */
 317         0,                              /* init */
 318         capi_rsa_free,  /* finish */
 319         RSA_FLAG_SIGN_VER, /* flags */
 320         NULL,                   /* app_data */
 321         capi_rsa_sign,  /* rsa_sign */
 322         0                               /* rsa_verify */
 323         };
 324
 325 static void capi_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad,
 326         int ind,long argl, void *argp)
 327         {
 328 /*fprintf(stderr, "Called capi_ex_free obj=%lx, idx=%d, item=%lx\n", obj, ind, item);*/
 329         capi_ctx_free(item);
 330         }
 331
 332 static void capi_rsa_ex_free(void *obj, void *item, CRYPTO_EX_DATA *ad,
 333         int ind,long argl, void *argp)
 334         {
 335 /*fprintf(stderr, "Called capi_rsa_free_key\n");*/
 336
 337         capi_free_key(item);
 338         }
 339
 340 static int capi_init(ENGINE *e)
 341         {
 342         CAPI_CTX *ctx;
 343         const RSA_METHOD *ossl_meth;
 344         capi_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, /*capi_ex_free*/ 0);
 345
 346         ctx = capi_ctx_new();
 347         if (!ctx || (capi_idx < 0))
 348                 goto memerr;
 349
 350         ENGINE_set_ex_data(e, capi_idx, ctx);
 351         /* Setup RSA_METHOD */
 352         rsa_capi_idx = RSA_get_ex_new_index(0, NULL, NULL, NULL, /*capi_rsa_ex_free*/ 0);
 353         dsa_capi_idx = DSA_get_ex_new_index(0, NULL, NULL, NULL, /*capi_rsa_ex_free*/ 0);
 354         ossl_meth = RSA_PKCS1_SSLeay();
 355         capi_rsa_method.rsa_pub_enc = ossl_meth->rsa_pub_enc;
 356         capi_rsa_method.rsa_pub_dec = ossl_meth->rsa_pub_dec;
 357         capi_rsa_method.rsa_mod_exp = ossl_meth->rsa_mod_exp;
 358         capi_rsa_method.bn_mod_exp = ossl_meth->bn_mod_exp;
 359
 360         return 1;
 361
 362         memerr:
 363         CAPIerr(CAPI_F_CAPI_INIT, ERR_R_MALLOC_FAILURE);
 364         return 0;
 365
 366         return 1;
 367         }
 368
 369 static int capi_destroy(ENGINE *e)
 370         {
 371
 372         ERR_unload_CAPI_strings();
 373         return 1;
 374         }
 375
 376 static int capi_finish(ENGINE *e)
 377         {
 378         CAPI_CTX *ctx;
 379         ctx = ENGINE_get_ex_data(e, capi_idx);
 380         capi_ctx_free(ctx);
 381         ENGINE_set_ex_data(e, capi_idx, NULL);
 382         return 1;
 383         }
 384
 385
 386 /* CryptoAPI key application data. This contains
 387  * a handle to the private key container (for sign operations)
 388  * and a handle to the key (for decrypt operations).
 389  */
 390
 391 struct CAPI_KEY_st
 392         {
 393         HCRYPTPROV hprov;
 394         HCRYPTKEY key;
 395         };
 396
 397 static int bind_capi(ENGINE *e)
 398         {
 399         if (!ENGINE_set_id(e, engine_capi_id)
 400                 || !ENGINE_set_name(e, engine_capi_name)
 401                 || !ENGINE_set_init_function(e, capi_init)
 402                 || !ENGINE_set_finish_function(e, capi_finish)
 403                 || !ENGINE_set_destroy_function(e, capi_destroy)
 404                 || !ENGINE_set_RSA(e, &capi_rsa_method)
 405                 || !ENGINE_set_load_privkey_function(e, capi_load_privkey)
 406                 || !ENGINE_set_cmd_defns(e, capi_cmd_defns)
 407                 || !ENGINE_set_ctrl_function(e, capi_ctrl))
 408                         return 0;
 409         ERR_load_CAPI_strings();
 410
 411         return 1;
 412
 413         }
 414
 415 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
 416 static int bind_helper(ENGINE *e, const char *id)
 417         {
 418         if(id && (strcmp(id, engine_capi_id) != 0))
 419                 return 0;
 420         if(!bind_capi(e))
 421                 return 0;
 422         return 1;
 423         }
 424 IMPLEMENT_DYNAMIC_CHECK_FN()
 425 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
 426 #else
 427 static ENGINE *engine_capi(void)
 428         {
 429         ENGINE *ret = ENGINE_new();
 430         if(!ret)
 431                 return NULL;
 432         if(!bind_capi(ret))
 433                 {
 434                 ENGINE_free(ret);
 435                 return NULL;
 436                 }
 437         return ret;
 438         }
 439
 440 void ENGINE_load_capi(void)
 441         {
 442         /* Copied from eng_[openssl|dyn].c */
 443         ENGINE *toadd = engine_capi();
 444         if(!toadd) return;
 445         ENGINE_add(toadd);
 446         ENGINE_free(toadd);
 447         ERR_clear_error();
 448         }
 449 #endif
 450
 451
 452 static int lend_tobn(BIGNUM *bn, unsigned char *bin, int binlen)
 453         {
 454         int i;
 455         /* Reverse buffer in place: since this is a keyblob structure
 456          * that will be freed up after conversion anyway it doesn't
 457          * matter if we change it.
 458          */
 459         for(i = 0; i < binlen / 2; i++)
 460                 {
 461                 unsigned char c;
 462                 c = bin[i];
 463                 bin[i] = bin[binlen - i - 1];
 464                 bin[binlen - i - 1] = c;
 465                 }
 466
 467         if (!BN_bin2bn(bin, binlen, bn))
 468                 return 0;
 469         return 1;
 470         }
 471
 472 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
 473         UI_METHOD *ui_method, void *callback_data)
 474         {
 475         EVP_PKEY *ret = NULL;
 476         CAPI_CTX *ctx;
 477         CAPI_KEY *key;
 478         unsigned char *pubkey = NULL;
 479         DWORD len;
 480         BLOBHEADER *bh;
 481         RSA *rkey = NULL;
 482         DSA *dkey = NULL;
 483         ctx = ENGINE_get_ex_data(eng, capi_idx);
 484
 485         if (!ctx)
 486                 {
 487                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_CANT_FIND_CAPI_CONTEXT);
 488                 return NULL;
 489                 }
 490
 491         key = capi_find_key(ctx, key_id);
 492
 493         if (!key)
 494                 return NULL;
 495
 496         len = 0;
 497         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, NULL, &len))
 498                 {
 499                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_PUBKEY_EXPORT_LENGTH_ERROR);
 500                 capi_addlasterror();
 501                 return NULL;
 502                 }
 503
 504         pubkey = OPENSSL_malloc(len);
 505
 506         if (!pubkey)
 507                 goto memerr;
 508
 509         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, pubkey, &len))
 510                 {
 511                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_PUBKEY_EXPORT_ERROR);
 512                 capi_addlasterror();
 513                 goto err;
 514                 }
 515
 516         bh = (BLOBHEADER *)pubkey;
 517         if (bh->bType != PUBLICKEYBLOB)
 518                 {
 519                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_INVALID_PUBLIC_KEY_BLOB);
 520                 goto err;
 521                 }
 522         if (bh->aiKeyAlg == CALG_RSA_SIGN || bh->aiKeyAlg == CALG_RSA_KEYX)
 523                 {
 524                 RSAPUBKEY *rp;
 525                 DWORD rsa_modlen;
 526                 unsigned char *rsa_modulus;
 527                 rp = (RSAPUBKEY *)(bh + 1);
 528                 if (rp->magic != 0x31415352)
 529                         {
 530                         char magstr[10];
 531                         BIO_snprintf(magstr, 10, "%lx", rp->magic);
 532                         CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_INVALID_RSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
 533                         ERR_add_error_data(2, "magic=0x", magstr);
 534                         goto err;
 535                         }
 536                 rsa_modulus = (unsigned char *)(rp + 1);
 537                 rkey = RSA_new_method(eng);
 538                 if (!rkey)
 539                         goto memerr;
 540
 541                 rkey->e = BN_new();
 542                 rkey->n = BN_new();
 543
 544                 if (!rkey->e || !rkey->n)
 545                         goto memerr;
 546
 547                 if (!BN_set_word(rkey->e, rp->pubexp))
 548                         goto memerr;
 549
 550                 rsa_modlen = rp->bitlen / 8;
 551                 if (!lend_tobn(rkey->n, rsa_modulus, rsa_modlen))
 552                         goto memerr;
 553
 554                 RSA_set_ex_data(rkey, rsa_capi_idx, key);
 555
 556                 if (!(ret = EVP_PKEY_new()))
 557                         goto memerr;
 558
 559                 EVP_PKEY_assign_RSA(ret, rkey);
 560                 rkey = NULL;
 561
 562                 }
 563         else if (bh->aiKeyAlg == CALG_DSS_SIGN)
 564                 {
 565                 DSSPUBKEY *dp;
 566                 DWORD dsa_plen;
 567                 unsigned char *btmp;
 568                 dp = (DSSPUBKEY *)(bh + 1);
 569                 if (dp->magic != 0x31535344)
 570                         {
 571                         char magstr[10];
 572                         BIO_snprintf(magstr, 10, "%lx", dp->magic);
 573                         CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_INVALID_DSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
 574                         ERR_add_error_data(2, "magic=0x", magstr);
 575                         goto err;
 576                         }
 577                 dsa_plen = dp->bitlen / 8;
 578                 btmp = (unsigned char *)(dp + 1);
 579                 dkey = DSA_new();
 580                 if (!dkey)
 581                         goto memerr;
 582                 dkey->p = BN_new();
 583                 dkey->q = BN_new();
 584                 dkey->g = BN_new();
 585                 dkey->pub_key = BN_new();
 586                 if (!dkey->p || !dkey->q || !dkey->g || !dkey->pub_key)
 587                         goto memerr;
 588                 if (!lend_tobn(dkey->p, btmp, dsa_plen))
 589                         goto memerr;
 590                 btmp += dsa_plen;
 591                 if (!lend_tobn(dkey->q, btmp, 20))
 592                         goto memerr;
 593                 btmp += 20;
 594                 if (!lend_tobn(dkey->g, btmp, dsa_plen))
 595                         goto memerr;
 596                 btmp += dsa_plen;
 597                 if (!lend_tobn(dkey->pub_key, btmp, dsa_plen))
 598                         goto memerr;
 599                 btmp += dsa_plen;
 600
 601                 DSA_set_ex_data(dkey, dsa_capi_idx, key);
 602
 603                 if (!(ret = EVP_PKEY_new()))
 604                         goto memerr;
 605
 606                 EVP_PKEY_assign_DSA(ret, dkey);
 607                 dkey = NULL;
 608                 }
 609         else
 610                 {
 611                 char algstr[10];
 612                 BIO_snprintf(algstr, 10, "%lx", bh->aiKeyAlg);
 613                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_UNSUPPORTED_PUBLIC_KEY_ALGORITHM);
 614                 ERR_add_error_data(2, "aiKeyAlg=0x", algstr);
 615                 goto err;
 616                 }
 617
 618         err:
 619         if (pubkey)
 620                 OPENSSL_free(pubkey);
 621         if (!ret)
 622                 {
 623                 if (rkey)
 624                         RSA_free(rkey);
 625                 if (dkey)
 626                         DSA_free(dkey);
 627                 if (key)
 628                         capi_free_key(key);
 629                 }
 630
 631         return ret;
 632
 633 memerr:
 634         CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, ERR_R_MALLOC_FAILURE);
 635         goto err;
 636
 637         }
 638
 639 /* CryptoAPI RSA operations */
 640
 641 int capi_rsa_priv_enc(int flen, const unsigned char *from,
 642                 unsigned char *to, RSA *rsa, int padding)
 643         {
 644         CAPIerr(CAPI_F_CAPI_RSA_PRIV_ENC, CAPI_R_FUNCTION_NOT_SUPPORTED);
 645         return -1;
 646         }
 647
 648 int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 649              unsigned char *sigret, unsigned int *siglen, const RSA *rsa)
 650         {
 651         ALG_ID alg;
 652         HCRYPTHASH hash;
 653         DWORD slen;
 654         unsigned int i;
 655         int ret = -1;
 656         CAPI_KEY *capi_key;
 657         CAPI_CTX *ctx;
 658
 659         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 660
 661         CAPI_trace(ctx, "Called CAPI_rsa_sign()\n");
 662
 663         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 664         if (!capi_key)
 665                 {
 666                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_GET_KEY);
 667                 return -1;
 668                 }
 669 /* Convert the signature type to a CryptoAPI algorithm ID */
 670         switch(dtype) {
 671         case NID_sha1:
 672                 alg = CALG_SHA1;
 673                 break;
 674
 675         case NID_md5:
 676                 alg = CALG_MD5;
 677                 break;
 678
 679         case NID_md5_sha1:
 680                 alg = CALG_SSL3_SHAMD5;
 681                 break;
 682         default:
 683                 {
 684                 char algstr[10];
 685                 BIO_snprintf(algstr, 10, "%lx", dtype);
 686                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_UNSUPPORTED_ALGORITHM_NID);
 687                 ERR_add_error_data(2, "NID=0x", algstr);
 688                 return -1;
 689                 }
 690         }
 691
 692
 693
 694 /* Create the hash object */
 695         if(!CryptCreateHash(capi_key->hprov, alg, 0, 0, &hash)) {
 696                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
 697                 capi_addlasterror();
 698                 return -1;
 699         }
 700 /* Set the hash value to the value passed */
 701
 702         if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)m, 0)) {
 703                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
 704                 capi_addlasterror();
 705                 goto err;
 706         }
 707
 708
 709 /* Finally sign it */
 710         slen = RSA_size(rsa);
 711         if(!CryptSignHash(hash, AT_KEYEXCHANGE, NULL, 0, sigret, &slen)) {
 712                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_ERROR_SIGNING_HASH);
 713                 capi_addlasterror();
 714                 goto err;
 715         } else {
 716                 ret = 1;
 717                 /* Inplace byte reversal of signature */
 718                 for(i = 0; i < slen / 2; i++) {
 719                         unsigned char c;
 720                         c = sigret[i];
 721                         sigret[i] = sigret[slen - i - 1];
 722                         sigret[slen - i - 1] = c;
 723                 }
 724                 *siglen = slen;
 725         }
 726
 727
 728         /* Now cleanup */
 729
 730 err:
 731         CryptDestroyHash(hash);
 732
 733         return ret;
 734 }
 735
 736 int capi_rsa_priv_dec(int flen, const unsigned char *from,
 737                 unsigned char *to, RSA *rsa, int padding)
 738 {
 739         int i;
 740         unsigned char *tmpbuf;
 741         CAPI_KEY *capi_key;
 742         CAPI_CTX *ctx;
 743         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 744
 745         CAPI_trace(ctx, "Called capi_rsa_priv_dec()\n");
 746
 747
 748         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 749         if (!capi_key)
 750                 {
 751                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_CANT_GET_KEY);
 752                 return -1;
 753                 }
 754
 755         if(padding != RSA_PKCS1_PADDING)
 756                 {
 757                 char errstr[10];
 758                 BIO_snprintf(errstr, 10, "%d", padding);
 759                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_UNSUPPORTED_PADDING);
 760                 ERR_add_error_data(2, "padding=", errstr);
 761                 return -1;
 762                 }
 763
 764         /* Create temp reverse order version of input */
 765         if(!(tmpbuf = OPENSSL_malloc(flen)) )
 766                 {
 767                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, ERR_R_MALLOC_FAILURE);
 768                 return -1;
 769                 }
 770         for(i = 0; i < flen; i++) tmpbuf[flen - i - 1] = from[i];
 771
 772         /* Finally decrypt it */
 773         if(!CryptDecrypt(capi_key->key, 0, TRUE, 0, tmpbuf, &flen))
 774                 {
 775                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_DECRYPT_ERROR);
 776                 capi_addlasterror();
 777                 OPENSSL_free(tmpbuf);
 778                 return -1;
 779                 }
 780         else memcpy(to, tmpbuf, flen);
 781
 782         OPENSSL_free(tmpbuf);
 783
 784         return flen;
 785 }
 786
 787 static int capi_rsa_free(RSA *rsa)
 788         {
 789         CAPI_KEY *capi_key;
 790         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 791         capi_free_key(capi_key);
 792         RSA_set_ex_data(rsa, rsa_capi_idx, 0);
 793         return 1;
 794         }
 795
 796 static void capi_vtrace(CAPI_CTX *ctx, int level, char *format, va_list argptr)
 797         {
 798         BIO *out;
 799
 800         if (!ctx || (ctx->debug_level < level) || (!ctx->debug_file))
 801                 return;
 802         out = BIO_new_file(ctx->debug_file, "a+");
 803         BIO_vprintf(out, format, argptr);
 804         BIO_free(out);
 805         }
 806
 807 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...)
 808         {
 809         va_list args;
 810         va_start(args, format);
 811         capi_vtrace(ctx, CAPI_DBG_TRACE, format, args);
 812         va_end(args);
 813         }
 814
 815 static void capi_addlasterror(void)
 816         {
 817         capi_adderror(GetLastError());
 818         }
 819
 820 static void capi_adderror(DWORD err)
 821         {
 822         char errstr[10];
 823         BIO_snprintf(errstr, 10, "%lX", err);
 824         ERR_add_error_data(2, "Error code= 0x", errstr);
 825         }
 826
 827 static char *wide_to_asc(LPWSTR wstr)
 828         {
 829         char *str;
 830         if (!wstr)
 831                 return NULL;
 832         str = OPENSSL_malloc(wcslen(wstr) + 1);
 833         if (!str)
 834                 {
 835                 CAPIerr(CAPI_F_WIDE_TO_ASC, ERR_R_MALLOC_FAILURE);
 836                 return NULL;
 837                 }
 838         sprintf(str, "%S", wstr);
 839         return str;
 840         }
 841
 842 static int capi_get_provname(CAPI_CTX *ctx, LPSTR *pname, DWORD *ptype, DWORD idx)
 843         {
 844         LPSTR name;
 845         DWORD len, err;
 846         CAPI_trace(ctx, "capi_get_provname, index=%d\n", idx);
 847         if (!CryptEnumProviders(idx, NULL, 0, ptype, NULL, &len))
 848                 {
 849                 err = GetLastError();
 850                 if (err == ERROR_NO_MORE_ITEMS)
 851                         return 2;
 852                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
 853                 capi_adderror(err);
 854                 return 0;
 855                 }
 856         name = OPENSSL_malloc(len);
 857                 if (!CryptEnumProviders(idx, NULL, 0, ptype, name, &len))
 858                 {
 859                 err = GetLastError();
 860                 if (err == ERROR_NO_MORE_ITEMS)
 861                         return 2;
 862                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
 863                 capi_adderror(err);
 864                 return 0;
 865                 }
 866         *pname = name;
 867         CAPI_trace(ctx, "capi_get_provname, returned name=%s, type=%d\n", name, *ptype);
 868
 869         return 1;
 870         }
 871
 872 static int capi_list_providers(CAPI_CTX *ctx, BIO *out)
 873         {
 874         DWORD idx, ptype;
 875         int ret;
 876         LPTSTR provname = NULL;
 877         CAPI_trace(ctx, "capi_list_providers\n");
 878         BIO_printf(out, "Available CSPs:\n");
 879         for(idx = 0; ; idx++)
 880                 {
 881                 ret = capi_get_provname(ctx, &provname, &ptype, idx);
 882                 if (ret == 2)
 883                         break;
 884                 if (ret == 0)
 885                         break;
 886                 BIO_printf(out, "%d. %s, type %d\n", idx, provname, ptype);
 887                 OPENSSL_free(provname);
 888                 }
 889         return 1;
 890         }
 891
 892 static int capi_list_containers(CAPI_CTX *ctx, BIO *out)
 893         {
 894         int ret = 1;
 895         HCRYPTPROV hprov;
 896         DWORD err, idx, flags, buflen = 0, clen;
 897         LPSTR cname;
 898         CAPI_trace(ctx, "Listing containers CSP=%s, type = %d\n", ctx->cspname, ctx->csptype);
 899         if (!CryptAcquireContext(&hprov, NULL, ctx->cspname, ctx->csptype, CRYPT_VERIFYCONTEXT))
 900                 {
 901                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
 902                 capi_addlasterror();
 903                 return 0;
 904                 }
 905         if (!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, NULL, &buflen, CRYPT_FIRST))
 906                 {
 907                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
 908                 capi_addlasterror();
 909                 return 0;
 910                 }
 911         CAPI_trace(ctx, "Got max container len %d\n", buflen);
 912         if (buflen == 0)
 913                 buflen = 1024;
 914         cname = OPENSSL_malloc(buflen);
 915         if (!cname)
 916                 {
 917                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, ERR_R_MALLOC_FAILURE);
 918                 goto err;
 919                 }
 920
 921         for (idx = 0;;idx++)
 922                 {
 923                         clen = buflen;
 924                         cname[0] = 0;
 925
 926                         if (idx == 0)
 927                                 flags = CRYPT_FIRST;
 928                         else
 929                                 flags = 0;
 930                         if(!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, cname, &clen, flags))
 931                                 {
 932                                 err = GetLastError();
 933                                 if (err == ERROR_NO_MORE_ITEMS)
 934                                         goto done;
 935                                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
 936                                 capi_adderror(err);
 937                                 goto err;
 938                                 }
 939                         CAPI_trace(ctx, "Container name %s, len=%d, index=%d, flags=%d\n", cname, clen, idx, flags);
 940                         if (!cname[0] && (clen == buflen))
 941                                 {
 942                                 CAPI_trace(ctx, "Enumerate bug: using workaround\n");
 943                                 goto done;
 944                                 }
 945                         BIO_printf(out, "%d. %s\n", idx, cname);
 946                 }
 947         err:
 948
 949         ret = 0;
 950
 951         done:
 952         if (cname)
 953                 OPENSSL_free(cname);
 954         CryptReleaseContext(hprov, 0);
 955
 956         return ret;
 957         }
 958
 959 CRYPT_KEY_PROV_INFO *capi_get_prov_info(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
 960         {
 961         DWORD len;
 962         CRYPT_KEY_PROV_INFO *pinfo;
 963
 964         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, NULL, &len))
 965                 return NULL;
 966         pinfo = OPENSSL_malloc(len);
 967         if (!pinfo)
 968                 {
 969                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, ERR_R_MALLOC_FAILURE);
 970                 return NULL;
 971                 }
 972         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, pinfo, &len))
 973                 {
 974                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, CAPI_R_ERROR_GETTING_KEY_PROVIDER_INFO);
 975                 capi_addlasterror();
 976                 OPENSSL_free(pinfo);
 977                 return NULL;
 978                 }
 979         return pinfo;
 980         }
 981
 982 static void capi_dump_prov_info(CAPI_CTX *ctx, BIO *out, CRYPT_KEY_PROV_INFO *pinfo)
 983         {
 984         char *provname = NULL, *contname = NULL;
 985         if (!pinfo)
 986                 {
 987                 BIO_printf(out, "  No Private Key\n");
 988                 return;
 989                 }
 990         provname = wide_to_asc(pinfo->pwszProvName);
 991         contname = wide_to_asc(pinfo->pwszContainerName);
 992         if (!provname || !contname)
 993                 goto err;
 994
 995         BIO_printf(out, "  Private Key Info:\n");
 996         BIO_printf(out, "    Provider Name:  %s, Provider Type %d\n", provname, pinfo->dwProvType);
 997         BIO_printf(out, "    Container Name: %s, Key Type %d\n", contname, pinfo->dwKeySpec);
 998         err:
 999         if (provname)
1000                 OPENSSL_free(provname);
1001         if (contname)
1002                 OPENSSL_free(contname);
1003         }
1004
1005 char * capi_cert_get_fname(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1006         {
1007         LPWSTR wfname;
1008         DWORD dlen;
1009
1010         CAPI_trace(ctx, "capi_cert_get_fname\n");
1011         if (!CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, NULL, &dlen))
1012                 return NULL;
1013         wfname = OPENSSL_malloc(dlen);
1014         if (CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, wfname, &dlen))
1015                 {
1016                 char *fname = wide_to_asc(wfname);
1017                 OPENSSL_free(wfname);
1018                 return fname;
1019                 }
1020         CAPIerr(CAPI_F_CAPI_CERT_GET_FNAME, CAPI_R_ERROR_GETTING_FRIENDLY_NAME);
1021         capi_addlasterror();
1022
1023         OPENSSL_free(wfname);
1024         return NULL;
1025         }
1026
1027
1028 void capi_dump_cert(CAPI_CTX *ctx, BIO *out, PCCERT_CONTEXT cert)
1029         {
1030         X509 *x;
1031         unsigned char *p;
1032         unsigned long flags = ctx->dump_flags;
1033         if (flags & CAPI_DMP_FNAME)
1034                 {
1035                 char *fname;
1036                 fname = capi_cert_get_fname(ctx, cert);
1037                 if (fname)
1038                         {
1039                         BIO_printf(out, "  Friendly Name \"%s\"\n", fname);
1040                         OPENSSL_free(fname);
1041                         }
1042                 else
1043                         BIO_printf(out, "  <No Friendly Name>\n");
1044                 }
1045
1046         p = cert->pbCertEncoded;
1047         x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1048         if (!x)
1049                 BIO_printf(out, "  <Can't parse certificate>\n");
1050         if (flags & CAPI_DMP_SUMMARY)
1051                 {
1052                 BIO_printf(out, "  Subject: ");
1053                 X509_NAME_print_ex(out, X509_get_subject_name(x), 0, XN_FLAG_ONELINE);
1054                 BIO_printf(out, "\n  Issuer: ");
1055                 X509_NAME_print_ex(out, X509_get_issuer_name(x), 0, XN_FLAG_ONELINE);
1056                 BIO_printf(out, "\n");
1057                 }
1058         if (flags & CAPI_DMP_FULL)
1059                 X509_print_ex(out, x, XN_FLAG_ONELINE,0);
1060
1061         if (flags & CAPI_DMP_PKEYINFO)
1062                 {
1063                 CRYPT_KEY_PROV_INFO *pinfo;
1064                 pinfo = capi_get_prov_info(ctx, cert);
1065                 capi_dump_prov_info(ctx, out, pinfo);
1066                 if (pinfo)
1067                         OPENSSL_free(pinfo);
1068                 }
1069
1070         if (flags & CAPI_DMP_PEM)
1071                 PEM_write_bio_X509(out, x);
1072         X509_free(x);
1073         }
1074
1075 HCERTSTORE capi_open_store(CAPI_CTX *ctx, char *storename)
1076         {
1077         HCERTSTORE hstore;
1078
1079         if (!storename)
1080                 storename = ctx->storename;
1081         if (!storename)
1082                 storename = "MY";
1083         CAPI_trace(ctx, "Opening certificate store %s\n", storename);
1084
1085         hstore = CertOpenSystemStore(0, storename);
1086         if (!hstore)
1087                 {
1088                 CAPIerr(CAPI_F_CAPI_OPEN_STORE, CAPI_R_ERROR_OPENING_STORE);
1089                 capi_addlasterror();
1090                 }
1091         return hstore;
1092         }
1093
1094 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *id)
1095         {
1096         char *storename;
1097         int idx;
1098         int ret = 1;
1099         HCERTSTORE hstore;
1100         PCCERT_CONTEXT cert = NULL;
1101
1102         storename = ctx->storename;
1103         if (!storename)
1104                 storename = "MY";
1105         CAPI_trace(ctx, "Listing certs for store %s\n", storename);
1106
1107         hstore = capi_open_store(ctx, storename);
1108         if (!hstore)
1109                 return 0;
1110         if (id)
1111                 {
1112                 cert = capi_find_cert(ctx, id, hstore);
1113                 if (!cert)
1114                         {
1115                         ret = 0;
1116                         goto err;
1117                         }
1118                 capi_dump_cert(ctx, out, cert);
1119                 CertFreeCertificateContext(cert);
1120                 }
1121         else
1122                 {
1123                 for(idx = 0;;idx++)
1124                         {
1125                         LPWSTR fname = NULL;
1126                         cert = CertEnumCertificatesInStore(hstore, cert);
1127                         if (!cert)
1128                                 break;
1129                         BIO_printf(out, "Certificate %d\n", idx);
1130                         capi_dump_cert(ctx, out, cert);
1131                         }
1132                 }
1133         err:
1134         CertCloseStore(hstore, 0);
1135         return ret;
1136         }
1137
1138 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore)
1139         {
1140         PCCERT_CONTEXT cert = NULL;
1141         char *fname = NULL;
1142         int match;
1143         switch(ctx->lookup_method)
1144                 {
1145                 case CAPI_LU_SUBSTR:
1146                         return CertFindCertificateInStore(hstore, X509_ASN_ENCODING, 0,
1147                                                                                         CERT_FIND_SUBJECT_STR_A, id, NULL);
1148                 case CAPI_LU_FNAME:
1149                         for(;;)
1150                                 {
1151                                 cert = CertEnumCertificatesInStore(hstore, cert);
1152                                 if (!cert)
1153                                         return NULL;
1154                                 fname = capi_cert_get_fname(ctx, cert);
1155                                 if (fname)
1156                                         {
1157                                         if (strcmp(fname, id))
1158                                                 match = 0;
1159                                         else
1160                                                 match = 1;
1161                                         OPENSSL_free(fname);
1162                                         if (match)
1163                                                 return cert;
1164                                         }
1165                                 }
1166                 default:
1167                         return NULL;
1168                 }
1169         }
1170
1171 static CAPI_KEY *capi_get_key(CAPI_CTX *ctx, const char *contname, char *provname, DWORD ptype, DWORD keyspec)
1172         {
1173         CAPI_KEY *key;
1174         key = OPENSSL_malloc(sizeof(CAPI_KEY));
1175         CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n",
1176                                                                                                                         contname, provname, ptype);
1177         if (!CryptAcquireContext(&key->hprov, contname, provname, ptype, 0))
1178                 {
1179                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1180                 capi_addlasterror();
1181                 goto err;
1182                 }
1183         if (!CryptGetUserKey(key->hprov, keyspec, &key->key))
1184                 {
1185                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_GETUSERKEY_ERROR);
1186                 capi_addlasterror();
1187                 CryptReleaseContext(key->hprov, 0);
1188                 goto err;
1189                 }
1190         return key;
1191
1192         err:
1193         OPENSSL_free(key);
1194         return NULL;
1195         }
1196
1197 static CAPI_KEY *capi_get_cert_key(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1198         {
1199         CAPI_KEY *key;
1200         CRYPT_KEY_PROV_INFO *pinfo = NULL;
1201         char *provname = NULL, *contname = NULL;
1202         pinfo = capi_get_prov_info(ctx, cert);
1203         if (!pinfo)
1204                 goto err;
1205         provname = wide_to_asc(pinfo->pwszProvName);
1206         contname = wide_to_asc(pinfo->pwszContainerName);
1207         if (!provname || !contname)
1208                 return 0;
1209
1210         key = capi_get_key(ctx, contname, provname, pinfo->dwProvType, pinfo->dwKeySpec);
1211
1212         err:
1213         if (pinfo)
1214                 OPENSSL_free(pinfo);
1215         if (provname)
1216                 OPENSSL_free(provname);
1217         if (contname)
1218                 OPENSSL_free(contname);
1219         return key;
1220         }
1221
1222 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id)
1223         {
1224         PCCERT_CONTEXT cert;
1225         HCERTSTORE hstore;
1226         CAPI_KEY *key = NULL;
1227         switch (ctx->lookup_method)
1228                 {
1229                 case CAPI_LU_SUBSTR:
1230                 case CAPI_LU_FNAME:
1231                 hstore = capi_open_store(ctx, NULL);
1232                 if (!hstore)
1233                         return NULL;
1234                 cert = capi_find_cert(ctx, id, hstore);
1235                 if (cert)
1236                         {
1237                         key = capi_get_cert_key(ctx, cert);
1238                         CertFreeCertificateContext(cert);
1239                         }
1240                 CertCloseStore(hstore, 0);
1241                 break;
1242
1243                 case CAPI_LU_CONTNAME:
1244                 key = capi_get_key(ctx, id, ctx->cspname, ctx->csptype, ctx->keytype);
1245                 break;
1246                 }
1247
1248         return key;
1249         }
1250
1251 void capi_free_key(CAPI_KEY *key)
1252         {
1253         if (!key)
1254                 return;
1255         CryptDestroyKey(key->key);
1256         CryptReleaseContext(key->hprov, 0);
1257         OPENSSL_free(key);
1258         }
1259
1260
1261 /* Initialize a CAPI_CTX structure */
1262
1263 static CAPI_CTX *capi_ctx_new()
1264         {
1265         CAPI_CTX *ctx;
1266         ctx = OPENSSL_malloc(sizeof(CAPI_CTX));
1267         if (!ctx)
1268                 {
1269                 CAPIerr(CAPI_F_CAPI_CTX_NEW, ERR_R_MALLOC_FAILURE);
1270                 return NULL;
1271                 }
1272         ctx->cspname = NULL;
1273         ctx->csptype = PROV_RSA_FULL;
1274         ctx->dump_flags = CAPI_DMP_SUMMARY|CAPI_DMP_FNAME;
1275         ctx->keytype = AT_KEYEXCHANGE;
1276         ctx->storename = NULL;
1277         ctx->lookup_method = CAPI_LU_SUBSTR;
1278         ctx->debug_level = 0;
1279         ctx->debug_file = NULL;
1280         return ctx;
1281         }
1282
1283 static void capi_ctx_free(CAPI_CTX *ctx)
1284         {
1285         CAPI_trace(ctx, "Calling capi_ctx_free with %lx\n", ctx);
1286         if (!ctx)
1287                 return;
1288         if (ctx->cspname)
1289                 OPENSSL_free(ctx->cspname);
1290         if (ctx->debug_file)
1291                 OPENSSL_free(ctx->debug_file);
1292         if (ctx->storename)
1293                 OPENSSL_free(ctx->storename);
1294         OPENSSL_free(ctx);
1295         }
1296
1297 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check)
1298         {
1299         CAPI_trace(ctx, "capi_ctx_set_provname, name=%s, type=%d\n", pname, type);
1300         if (check)
1301                 {
1302                 HCRYPTPROV hprov;
1303                 if (!CryptAcquireContext(&hprov, NULL, pname, type, CRYPT_VERIFYCONTEXT))
1304                         {
1305                         CAPIerr(CAPI_F_CAPI_CTX_SET_PROVNAME, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1306                         capi_addlasterror();
1307                         return 0;
1308                         }
1309                 CryptReleaseContext(hprov, 0);
1310                 }
1311         ctx->cspname = BUF_strdup(pname);
1312         ctx->csptype = type;
1313         return 1;
1314         }
1315
1316 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx)
1317         {
1318         LPSTR pname;
1319         DWORD type;
1320         if (capi_get_provname(ctx, &pname, &type, idx) != 1)
1321                 return 0;
1322         return capi_ctx_set_provname(ctx, pname, type, 0);
1323         }
1324
1325 #endif
1326 #endif