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/bn.h>
  60
  61 #ifdef OPENSSL_SYS_WIN32
  62 #ifndef OPENSSL_NO_CAPIENG
  63
  64 #include <openssl/rsa.h>
  65
  66 #include <windows.h>
  67
  68 #ifndef _WIN32_WINNT
  69 #define _WIN32_WINNT 0x0400
  70 #endif
  71
  72 #include <wincrypt.h>
  73
  74 /*
  75  * This module uses several "new" interfaces, among which is
  76  * CertGetCertificateContextProperty. CERT_KEY_PROV_INFO_PROP_ID is
  77  * one of possible values you can pass to function in question. By
  78  * checking if it's defined we can see if wincrypt.h and accompanying
  79  * crypt32.lib are in shape. Yes, it's rather "weak" test and if
  80  * compilation fails, then re-configure with -DOPENSSL_NO_CAPIENG.
  81  */
  82 #ifdef CERT_KEY_PROV_INFO_PROP_ID
  83 # define __COMPILE_CAPIENG
  84 #endif /* CERT_KEY_PROV_INFO_PROP_ID */
  85 #endif /* OPENSSL_NO_CAPIENG */
  86 #endif /* OPENSSL_SYS_WIN32 */
  87
  88 #ifdef __COMPILE_CAPIENG
  89
  90 #undef X509_EXTENSIONS
  91 #undef X509_CERT_PAIR
  92
  93 /* Definitions which may be missing from earlier version of headers */
  94 #ifndef CERT_STORE_OPEN_EXISTING_FLAG
  95 #define CERT_STORE_OPEN_EXISTING_FLAG                   0x00004000
  96 #endif
  97
  98 #ifndef CERT_STORE_CREATE_NEW_FLAG
  99 #define CERT_STORE_CREATE_NEW_FLAG                      0x00002000
 100 #endif
 101
 102 #ifndef CERT_SYSTEM_STORE_CURRENT_USER
 103 #define CERT_SYSTEM_STORE_CURRENT_USER                  0x00010000
 104 #endif
 105
 106 #include <openssl/engine.h>
 107 #include <openssl/pem.h>
 108 #include <openssl/x509v3.h>
 109
 110 #include "e_capi_err.h"
 111 #include "e_capi_err.c"
 112
 113
 114 static const char *engine_capi_id = "capi";
 115 static const char *engine_capi_name = "CryptoAPI ENGINE";
 116
 117 typedef struct CAPI_CTX_st CAPI_CTX;
 118 typedef struct CAPI_KEY_st CAPI_KEY;
 119
 120 static void capi_addlasterror(void);
 121 static void capi_adderror(DWORD err);
 122
 123 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...);
 124
 125 static int capi_list_providers(CAPI_CTX *ctx, BIO *out);
 126 static int capi_list_containers(CAPI_CTX *ctx, BIO *out);
 127 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *storename);
 128 void capi_free_key(CAPI_KEY *key);
 129
 130 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore);
 131
 132 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id);
 133
 134 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
 135         UI_METHOD *ui_method, void *callback_data);
 136 static int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 137              unsigned char *sigret, unsigned int *siglen, const RSA *rsa);
 138 static int capi_rsa_priv_enc(int flen, const unsigned char *from,
 139                 unsigned char *to, RSA *rsa, int padding);
 140 static int capi_rsa_priv_dec(int flen, const unsigned char *from,
 141                 unsigned char *to, RSA *rsa, int padding);
 142 static int capi_rsa_free(RSA *rsa);
 143
 144 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
 145                                                         DSA *dsa);
 146 static int capi_dsa_free(DSA *dsa);
 147
 148 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
 149         STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey,
 150         STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data);
 151
 152 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
 153 #ifdef OPENSSL_CAPIENG_DIALOG
 154 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
 155 #endif
 156
 157 typedef PCCERT_CONTEXT (WINAPI *CERTDLG)(HCERTSTORE, HWND, LPCWSTR,
 158                                                 LPCWSTR, DWORD, DWORD,
 159                                                 void *);
 160 typedef HWND (WINAPI *GETCONSWIN)(void);
 161
 162 /* This structure contains CAPI ENGINE specific data:
 163  * it contains various global options and affects how
 164  * other functions behave.
 165  */
 166
 167 #define CAPI_DBG_TRACE  2
 168 #define CAPI_DBG_ERROR  1
 169
 170 struct CAPI_CTX_st {
 171         int debug_level;
 172         char *debug_file;
 173         /* Parameters to use for container lookup */
 174         DWORD keytype;
 175         LPSTR cspname;
 176         DWORD csptype;
 177         /* Certificate store name to use */
 178         LPSTR storename;
 179         LPSTR ssl_client_store;
 180         /* System store flags */
 181         DWORD store_flags;
 182
 183 /* Lookup string meanings in load_private_key */
 184 /* Substring of subject: uses "storename" */
 185 #define CAPI_LU_SUBSTR          1
 186 /* Friendly name: uses storename */
 187 #define CAPI_LU_FNAME           2
 188 /* Container name: uses cspname, keytype */
 189 #define CAPI_LU_CONTNAME        3
 190         int lookup_method;
 191 /* Info to dump with dumpcerts option */
 192 /* Issuer and serial name strings */
 193 #define CAPI_DMP_SUMMARY        0x1
 194 /* Friendly name */
 195 #define CAPI_DMP_FNAME          0x2
 196 /* Full X509_print dump */
 197 #define CAPI_DMP_FULL           0x4
 198 /* Dump PEM format certificate */
 199 #define CAPI_DMP_PEM            0x8
 200 /* Dump pseudo key (if possible) */
 201 #define CAPI_DMP_PSKEY          0x10
 202 /* Dump key info (if possible) */
 203 #define CAPI_DMP_PKEYINFO       0x20
 204
 205         DWORD dump_flags;
 206         int (*client_cert_select)(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
 207
 208         CERTDLG certselectdlg;
 209         GETCONSWIN getconswindow;
 210 };
 211
 212
 213 static CAPI_CTX *capi_ctx_new();
 214 static void capi_ctx_free(CAPI_CTX *ctx);
 215 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check);
 216 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx);
 217
 218 #define CAPI_CMD_LIST_CERTS             ENGINE_CMD_BASE
 219 #define CAPI_CMD_LOOKUP_CERT            (ENGINE_CMD_BASE + 1)
 220 #define CAPI_CMD_DEBUG_LEVEL            (ENGINE_CMD_BASE + 2)
 221 #define CAPI_CMD_DEBUG_FILE             (ENGINE_CMD_BASE + 3)
 222 #define CAPI_CMD_KEYTYPE                (ENGINE_CMD_BASE + 4)
 223 #define CAPI_CMD_LIST_CSPS              (ENGINE_CMD_BASE + 5)
 224 #define CAPI_CMD_SET_CSP_IDX            (ENGINE_CMD_BASE + 6)
 225 #define CAPI_CMD_SET_CSP_NAME           (ENGINE_CMD_BASE + 7)
 226 #define CAPI_CMD_SET_CSP_TYPE           (ENGINE_CMD_BASE + 8)
 227 #define CAPI_CMD_LIST_CONTAINERS        (ENGINE_CMD_BASE + 9)
 228 #define CAPI_CMD_LIST_OPTIONS           (ENGINE_CMD_BASE + 10)
 229 #define CAPI_CMD_LOOKUP_METHOD          (ENGINE_CMD_BASE + 11)
 230 #define CAPI_CMD_STORE_NAME             (ENGINE_CMD_BASE + 12)
 231 #define CAPI_CMD_STORE_FLAGS            (ENGINE_CMD_BASE + 13)
 232
 233 static const ENGINE_CMD_DEFN capi_cmd_defns[] = {
 234         {CAPI_CMD_LIST_CERTS,
 235                 "list_certs",
 236                 "List all certificates in store",
 237                 ENGINE_CMD_FLAG_NO_INPUT},
 238         {CAPI_CMD_LOOKUP_CERT,
 239                 "lookup_cert",
 240                 "Lookup and output certificates",
 241                 ENGINE_CMD_FLAG_STRING},
 242         {CAPI_CMD_DEBUG_LEVEL,
 243                 "debug_level",
 244                 "debug level (1=errors, 2=trace)",
 245                 ENGINE_CMD_FLAG_NUMERIC},
 246         {CAPI_CMD_DEBUG_FILE,
 247                 "debug_file",
 248                 "debugging filename)",
 249                 ENGINE_CMD_FLAG_STRING},
 250         {CAPI_CMD_KEYTYPE,
 251                 "key_type",
 252                 "Key type: 1=AT_KEYEXCHANGE (default), 2=AT_SIGNATURE",
 253                 ENGINE_CMD_FLAG_NUMERIC},
 254         {CAPI_CMD_LIST_CSPS,
 255                 "list_csps",
 256                 "List all CSPs",
 257                 ENGINE_CMD_FLAG_NO_INPUT},
 258         {CAPI_CMD_SET_CSP_IDX,
 259                 "csp_idx",
 260                 "Set CSP by index",
 261                 ENGINE_CMD_FLAG_NUMERIC},
 262         {CAPI_CMD_SET_CSP_NAME,
 263                 "csp_name",
 264                 "Set CSP name, (default CSP used if not specified)",
 265                 ENGINE_CMD_FLAG_STRING},
 266         {CAPI_CMD_SET_CSP_TYPE,
 267                 "csp_type",
 268                 "Set CSP type, (default RSA_PROV_FULL)",
 269                 ENGINE_CMD_FLAG_NUMERIC},
 270         {CAPI_CMD_LIST_CONTAINERS,
 271                 "list_containers",
 272                 "list container names",
 273                 ENGINE_CMD_FLAG_NO_INPUT},
 274         {CAPI_CMD_LIST_OPTIONS,
 275                 "list_options",
 276                 "Set list options (1=summary,2=friendly name, 4=full printout, 8=PEM output, 16=XXX, "
 277                 "32=private key info)",
 278                 ENGINE_CMD_FLAG_NUMERIC},
 279         {CAPI_CMD_LOOKUP_METHOD,
 280                 "lookup_method",
 281                 "Set key lookup method (1=substring, 2=friendlyname, 3=container name)",
 282                 ENGINE_CMD_FLAG_NUMERIC},
 283         {CAPI_CMD_STORE_NAME,
 284                 "store_name",
 285                 "certificate store name, default \"MY\"",
 286                 ENGINE_CMD_FLAG_STRING},
 287         {CAPI_CMD_STORE_FLAGS,
 288                 "store_flags",
 289                 "Certificate store flags: 1 = system store",
 290                 ENGINE_CMD_FLAG_NUMERIC},
 291
 292         {0, NULL, NULL, 0}
 293         };
 294
 295 static int capi_idx = -1;
 296 static int rsa_capi_idx = -1;
 297 static int dsa_capi_idx = -1;
 298 static int cert_capi_idx = -1;
 299
 300 static int capi_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
 301         {
 302         int ret = 1;
 303         CAPI_CTX *ctx;
 304         BIO *out;
 305         if (capi_idx == -1)
 306                 {
 307                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_ENGINE_NOT_INITIALIZED);
 308                 return 0;
 309                 }
 310         ctx = ENGINE_get_ex_data(e, capi_idx);
 311         out = BIO_new_fp(stdout, BIO_NOCLOSE);
 312         switch (cmd)
 313                 {
 314                 case CAPI_CMD_LIST_CSPS:
 315                 ret = capi_list_providers(ctx, out);
 316                 break;
 317
 318                 case CAPI_CMD_LIST_CERTS:
 319                 ret = capi_list_certs(ctx, out, NULL);
 320                 break;
 321
 322                 case CAPI_CMD_LOOKUP_CERT:
 323                 ret = capi_list_certs(ctx, out, p);
 324                 break;
 325
 326                 case CAPI_CMD_LIST_CONTAINERS:
 327                 ret = capi_list_containers(ctx, out);
 328                 break;
 329
 330                 case CAPI_CMD_STORE_NAME:
 331                 if (ctx->storename)
 332                         OPENSSL_free(ctx->storename);
 333                 ctx->storename = BUF_strdup(p);
 334                 CAPI_trace(ctx, "Setting store name to %s\n", p);
 335                 break;
 336
 337                 case CAPI_CMD_STORE_FLAGS:
 338                 if (i & 1)
 339                         {
 340                         ctx->store_flags |= CERT_SYSTEM_STORE_LOCAL_MACHINE;
 341                         ctx->store_flags &= ~CERT_SYSTEM_STORE_CURRENT_USER;
 342                         }
 343                 else
 344                         {
 345                         ctx->store_flags |= CERT_SYSTEM_STORE_CURRENT_USER;
 346                         ctx->store_flags &= ~CERT_SYSTEM_STORE_LOCAL_MACHINE;
 347                         }
 348                 CAPI_trace(ctx, "Setting flags to %d\n", i);
 349                 break;
 350
 351                 case CAPI_CMD_DEBUG_LEVEL:
 352                 ctx->debug_level = (int)i;
 353                 CAPI_trace(ctx, "Setting debug level to %d\n", ctx->debug_level);
 354                 break;
 355
 356                 case CAPI_CMD_DEBUG_FILE:
 357                 ctx->debug_file = BUF_strdup(p);
 358                 CAPI_trace(ctx, "Setting debug file to %s\n", ctx->debug_file);
 359                 break;
 360
 361                 case CAPI_CMD_KEYTYPE:
 362                 ctx->keytype = i;
 363                 CAPI_trace(ctx, "Setting key type to %d\n", ctx->keytype);
 364                 break;
 365
 366                 case CAPI_CMD_SET_CSP_IDX:
 367                 ret = capi_ctx_set_provname_idx(ctx, i);
 368                 break;
 369
 370                 case CAPI_CMD_LIST_OPTIONS:
 371                 ctx->dump_flags = i;
 372                 break;
 373
 374                 case CAPI_CMD_LOOKUP_METHOD:
 375                 if (i < 1 || i > 3)
 376                         {
 377                         CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_INVALID_LOOKUP_METHOD);
 378                         return 0;
 379                         }
 380                 ctx->lookup_method = i;
 381                 break;
 382
 383                 case CAPI_CMD_SET_CSP_NAME:
 384                 ret = capi_ctx_set_provname(ctx, p, ctx->csptype, 1);
 385                 break;
 386
 387                 case CAPI_CMD_SET_CSP_TYPE:
 388                 ctx->csptype = i;
 389                 break;
 390
 391                 default:
 392                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_UNKNOWN_COMMAND);
 393                 ret = 0;
 394         }
 395
 396         BIO_free(out);
 397         return ret;
 398
 399         }
 400
 401 static RSA_METHOD capi_rsa_method =
 402         {
 403         "CryptoAPI RSA method",
 404         0,                              /* pub_enc */
 405         0,                              /* pub_dec */
 406         capi_rsa_priv_enc,              /* priv_enc */
 407         capi_rsa_priv_dec,              /* priv_dec */
 408         0,                              /* rsa_mod_exp */
 409         0,                              /* bn_mod_exp */
 410         0,                              /* init */
 411         capi_rsa_free,                  /* finish */
 412         RSA_FLAG_SIGN_VER,              /* flags */
 413         NULL,                           /* app_data */
 414         capi_rsa_sign,                  /* rsa_sign */
 415         0                               /* rsa_verify */
 416         };
 417
 418 static DSA_METHOD capi_dsa_method =
 419         {
 420         "CryptoAPI DSA method",
 421         capi_dsa_do_sign,               /* dsa_do_sign */
 422         0,                              /* dsa_sign_setup */
 423         0,                              /* dsa_do_verify */
 424         0,                              /* dsa_mod_exp */
 425         0,                              /* bn_mod_exp */
 426         0,                              /* init */
 427         capi_dsa_free,                  /* finish */
 428         0,                              /* flags */
 429         NULL,                           /* app_data */
 430         0,                              /* dsa_paramgen */
 431         0                               /* dsa_keygen */
 432         };
 433
 434 static int capi_init(ENGINE *e)
 435         {
 436         CAPI_CTX *ctx;
 437         const RSA_METHOD *ossl_rsa_meth;
 438         const DSA_METHOD *ossl_dsa_meth;
 439         capi_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, 0);
 440         cert_capi_idx = X509_get_ex_new_index(0, NULL, NULL, NULL, 0);
 441
 442         ctx = capi_ctx_new();
 443         if (!ctx || (capi_idx < 0))
 444                 goto memerr;
 445
 446         ENGINE_set_ex_data(e, capi_idx, ctx);
 447         /* Setup RSA_METHOD */
 448         rsa_capi_idx = RSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
 449         ossl_rsa_meth = RSA_PKCS1_SSLeay();
 450         capi_rsa_method.rsa_pub_enc = ossl_rsa_meth->rsa_pub_enc;
 451         capi_rsa_method.rsa_pub_dec = ossl_rsa_meth->rsa_pub_dec;
 452         capi_rsa_method.rsa_mod_exp = ossl_rsa_meth->rsa_mod_exp;
 453         capi_rsa_method.bn_mod_exp = ossl_rsa_meth->bn_mod_exp;
 454
 455         /* Setup DSA Method */
 456         dsa_capi_idx = DSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
 457         ossl_dsa_meth = DSA_OpenSSL();
 458         capi_dsa_method.dsa_do_verify = ossl_dsa_meth->dsa_do_verify;
 459         capi_dsa_method.dsa_mod_exp = ossl_dsa_meth->dsa_mod_exp;
 460         capi_dsa_method.bn_mod_exp = ossl_dsa_meth->bn_mod_exp;
 461
 462 #ifdef OPENSSL_CAPIENG_DIALOG
 463         {
 464         HMODULE cryptui = LoadLibrary(TEXT("CRYPTUI.DLL"));
 465         HMODULE kernel = GetModuleHandle(TEXT("KERNEL32.DLL"));
 466         if (cryptui)
 467                 ctx->certselectdlg = (CERTDLG)GetProcAddress(cryptui, "CryptUIDlgSelectCertificateFromStore");
 468         if (kernel)
 469                 ctx->getconswindow = (GETCONSWIN)GetProcAddress(kernel, "GetConsoleWindow");
 470         if (cryptui && !OPENSSL_isservice())
 471                 ctx->client_cert_select = cert_select_dialog;
 472         }
 473 #endif
 474
 475
 476         return 1;
 477
 478         memerr:
 479         CAPIerr(CAPI_F_CAPI_INIT, ERR_R_MALLOC_FAILURE);
 480         return 0;
 481
 482         return 1;
 483         }
 484
 485 static int capi_destroy(ENGINE *e)
 486         {
 487         ERR_unload_CAPI_strings();
 488         return 1;
 489         }
 490
 491 static int capi_finish(ENGINE *e)
 492         {
 493         CAPI_CTX *ctx;
 494         ctx = ENGINE_get_ex_data(e, capi_idx);
 495         capi_ctx_free(ctx);
 496         ENGINE_set_ex_data(e, capi_idx, NULL);
 497         return 1;
 498         }
 499
 500
 501 /* CryptoAPI key application data. This contains
 502  * a handle to the private key container (for sign operations)
 503  * and a handle to the key (for decrypt operations).
 504  */
 505
 506 struct CAPI_KEY_st
 507         {
 508         /* Associated certificate context (if any) */
 509         PCCERT_CONTEXT pcert;
 510         HCRYPTPROV hprov;
 511         HCRYPTKEY key;
 512         DWORD keyspec;
 513         };
 514
 515 static int bind_capi(ENGINE *e)
 516         {
 517         if (!ENGINE_set_id(e, engine_capi_id)
 518                 || !ENGINE_set_name(e, engine_capi_name)
 519                 || !ENGINE_set_init_function(e, capi_init)
 520                 || !ENGINE_set_finish_function(e, capi_finish)
 521                 || !ENGINE_set_destroy_function(e, capi_destroy)
 522                 || !ENGINE_set_RSA(e, &capi_rsa_method)
 523                 || !ENGINE_set_DSA(e, &capi_dsa_method)
 524                 || !ENGINE_set_load_privkey_function(e, capi_load_privkey)
 525                 || !ENGINE_set_load_ssl_client_cert_function(e,
 526                                                 capi_load_ssl_client_cert)
 527                 || !ENGINE_set_cmd_defns(e, capi_cmd_defns)
 528                 || !ENGINE_set_ctrl_function(e, capi_ctrl))
 529                         return 0;
 530         ERR_load_CAPI_strings();
 531
 532         return 1;
 533
 534         }
 535
 536 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
 537 static int bind_helper(ENGINE *e, const char *id)
 538         {
 539         if(id && (strcmp(id, engine_capi_id) != 0))
 540                 return 0;
 541         if(!bind_capi(e))
 542                 return 0;
 543         return 1;
 544         }
 545 IMPLEMENT_DYNAMIC_CHECK_FN()
 546 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
 547 #else
 548 static ENGINE *engine_capi(void)
 549         {
 550         ENGINE *ret = ENGINE_new();
 551         if(!ret)
 552                 return NULL;
 553         if(!bind_capi(ret))
 554                 {
 555                 ENGINE_free(ret);
 556                 return NULL;
 557                 }
 558         return ret;
 559         }
 560
 561 void ENGINE_load_capi(void)
 562         {
 563         /* Copied from eng_[openssl|dyn].c */
 564         ENGINE *toadd = engine_capi();
 565         if(!toadd) return;
 566         ENGINE_add(toadd);
 567         ENGINE_free(toadd);
 568         ERR_clear_error();
 569         }
 570 #endif
 571
 572
 573 static int lend_tobn(BIGNUM *bn, unsigned char *bin, int binlen)
 574         {
 575         int i;
 576         /* Reverse buffer in place: since this is a keyblob structure
 577          * that will be freed up after conversion anyway it doesn't
 578          * matter if we change it.
 579          */
 580         for(i = 0; i < binlen / 2; i++)
 581                 {
 582                 unsigned char c;
 583                 c = bin[i];
 584                 bin[i] = bin[binlen - i - 1];
 585                 bin[binlen - i - 1] = c;
 586                 }
 587
 588         if (!BN_bin2bn(bin, binlen, bn))
 589                 return 0;
 590         return 1;
 591         }
 592
 593 /* Given a CAPI_KEY get an EVP_PKEY structure */
 594
 595 static EVP_PKEY *capi_get_pkey(ENGINE *eng, CAPI_KEY *key)
 596         {
 597         unsigned char *pubkey = NULL;
 598         DWORD len;
 599         BLOBHEADER *bh;
 600         RSA *rkey = NULL;
 601         DSA *dkey = NULL;
 602         EVP_PKEY *ret = NULL;
 603         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, NULL, &len))
 604                 {
 605                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_LENGTH_ERROR);
 606                 capi_addlasterror();
 607                 return NULL;
 608                 }
 609
 610         pubkey = OPENSSL_malloc(len);
 611
 612         if (!pubkey)
 613                 goto memerr;
 614
 615         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, pubkey, &len))
 616                 {
 617                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_ERROR);
 618                 capi_addlasterror();
 619                 goto err;
 620                 }
 621
 622         bh = (BLOBHEADER *)pubkey;
 623         if (bh->bType != PUBLICKEYBLOB)
 624                 {
 625                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_PUBLIC_KEY_BLOB);
 626                 goto err;
 627                 }
 628         if (bh->aiKeyAlg == CALG_RSA_SIGN || bh->aiKeyAlg == CALG_RSA_KEYX)
 629                 {
 630                 RSAPUBKEY *rp;
 631                 DWORD rsa_modlen;
 632                 unsigned char *rsa_modulus;
 633                 rp = (RSAPUBKEY *)(bh + 1);
 634                 if (rp->magic != 0x31415352)
 635                         {
 636                         char magstr[10];
 637                         BIO_snprintf(magstr, 10, "%lx", rp->magic);
 638                         CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_RSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
 639                         ERR_add_error_data(2, "magic=0x", magstr);
 640                         goto err;
 641                         }
 642                 rsa_modulus = (unsigned char *)(rp + 1);
 643                 rkey = RSA_new_method(eng);
 644                 if (!rkey)
 645                         goto memerr;
 646
 647                 rkey->e = BN_new();
 648                 rkey->n = BN_new();
 649
 650                 if (!rkey->e || !rkey->n)
 651                         goto memerr;
 652
 653                 if (!BN_set_word(rkey->e, rp->pubexp))
 654                         goto memerr;
 655
 656                 rsa_modlen = rp->bitlen / 8;
 657                 if (!lend_tobn(rkey->n, rsa_modulus, rsa_modlen))
 658                         goto memerr;
 659
 660                 RSA_set_ex_data(rkey, rsa_capi_idx, key);
 661
 662                 if (!(ret = EVP_PKEY_new()))
 663                         goto memerr;
 664
 665                 EVP_PKEY_assign_RSA(ret, rkey);
 666                 rkey = NULL;
 667
 668                 }
 669         else if (bh->aiKeyAlg == CALG_DSS_SIGN)
 670                 {
 671                 DSSPUBKEY *dp;
 672                 DWORD dsa_plen;
 673                 unsigned char *btmp;
 674                 dp = (DSSPUBKEY *)(bh + 1);
 675                 if (dp->magic != 0x31535344)
 676                         {
 677                         char magstr[10];
 678                         BIO_snprintf(magstr, 10, "%lx", dp->magic);
 679                         CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_DSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
 680                         ERR_add_error_data(2, "magic=0x", magstr);
 681                         goto err;
 682                         }
 683                 dsa_plen = dp->bitlen / 8;
 684                 btmp = (unsigned char *)(dp + 1);
 685                 dkey = DSA_new_method(eng);
 686                 if (!dkey)
 687                         goto memerr;
 688                 dkey->p = BN_new();
 689                 dkey->q = BN_new();
 690                 dkey->g = BN_new();
 691                 dkey->pub_key = BN_new();
 692                 if (!dkey->p || !dkey->q || !dkey->g || !dkey->pub_key)
 693                         goto memerr;
 694                 if (!lend_tobn(dkey->p, btmp, dsa_plen))
 695                         goto memerr;
 696                 btmp += dsa_plen;
 697                 if (!lend_tobn(dkey->q, btmp, 20))
 698                         goto memerr;
 699                 btmp += 20;
 700                 if (!lend_tobn(dkey->g, btmp, dsa_plen))
 701                         goto memerr;
 702                 btmp += dsa_plen;
 703                 if (!lend_tobn(dkey->pub_key, btmp, dsa_plen))
 704                         goto memerr;
 705                 btmp += dsa_plen;
 706
 707                 DSA_set_ex_data(dkey, dsa_capi_idx, key);
 708
 709                 if (!(ret = EVP_PKEY_new()))
 710                         goto memerr;
 711
 712                 EVP_PKEY_assign_DSA(ret, dkey);
 713                 dkey = NULL;
 714                 }
 715         else
 716                 {
 717                 char algstr[10];
 718                 BIO_snprintf(algstr, 10, "%lx", bh->aiKeyAlg);
 719                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_UNSUPPORTED_PUBLIC_KEY_ALGORITHM);
 720                 ERR_add_error_data(2, "aiKeyAlg=0x", algstr);
 721                 goto err;
 722                 }
 723
 724
 725         err:
 726         if (pubkey)
 727                 OPENSSL_free(pubkey);
 728         if (!ret)
 729                 {
 730                 if (rkey)
 731                         RSA_free(rkey);
 732                 if (dkey)
 733                         DSA_free(dkey);
 734                 }
 735
 736         return ret;
 737
 738 memerr:
 739         CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_MALLOC_FAILURE);
 740         goto err;
 741
 742         }
 743
 744 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
 745         UI_METHOD *ui_method, void *callback_data)
 746         {
 747         CAPI_CTX *ctx;
 748         CAPI_KEY *key;
 749         EVP_PKEY *ret;
 750         ctx = ENGINE_get_ex_data(eng, capi_idx);
 751
 752         if (!ctx)
 753                 {
 754                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_CANT_FIND_CAPI_CONTEXT);
 755                 return NULL;
 756                 }
 757
 758         key = capi_find_key(ctx, key_id);
 759
 760         if (!key)
 761                 return NULL;
 762
 763         ret = capi_get_pkey(eng, key);
 764
 765         if (!ret)
 766                 capi_free_key(key);
 767         return ret;
 768
 769         }
 770
 771 /* CryptoAPI RSA operations */
 772
 773 int capi_rsa_priv_enc(int flen, const unsigned char *from,
 774                 unsigned char *to, RSA *rsa, int padding)
 775         {
 776         CAPIerr(CAPI_F_CAPI_RSA_PRIV_ENC, CAPI_R_FUNCTION_NOT_SUPPORTED);
 777         return -1;
 778         }
 779
 780 int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 781              unsigned char *sigret, unsigned int *siglen, const RSA *rsa)
 782         {
 783         ALG_ID alg;
 784         HCRYPTHASH hash;
 785         DWORD slen;
 786         unsigned int i;
 787         int ret = -1;
 788         CAPI_KEY *capi_key;
 789         CAPI_CTX *ctx;
 790
 791         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 792
 793         CAPI_trace(ctx, "Called CAPI_rsa_sign()\n");
 794
 795         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 796         if (!capi_key)
 797                 {
 798                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_GET_KEY);
 799                 return -1;
 800                 }
 801 /* Convert the signature type to a CryptoAPI algorithm ID */
 802         switch(dtype)
 803                 {
 804         case NID_sha1:
 805                 alg = CALG_SHA1;
 806                 break;
 807
 808         case NID_md5:
 809                 alg = CALG_MD5;
 810                 break;
 811
 812         case NID_md5_sha1:
 813                 alg = CALG_SSL3_SHAMD5;
 814                 break;
 815         default:
 816                 {
 817                 char algstr[10];
 818                 BIO_snprintf(algstr, 10, "%lx", dtype);
 819                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_UNSUPPORTED_ALGORITHM_NID);
 820                 ERR_add_error_data(2, "NID=0x", algstr);
 821                 return -1;
 822                 }
 823         }
 824
 825
 826
 827 /* Create the hash object */
 828         if(!CryptCreateHash(capi_key->hprov, alg, 0, 0, &hash))
 829                 {
 830                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
 831                 capi_addlasterror();
 832                 return -1;
 833                 }
 834 /* Set the hash value to the value passed */
 835
 836         if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)m, 0))
 837                 {
 838                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
 839                 capi_addlasterror();
 840                 goto err;
 841                 }
 842
 843
 844 /* Finally sign it */
 845         slen = RSA_size(rsa);
 846         if(!CryptSignHashA(hash, capi_key->keyspec, NULL, 0, sigret, &slen))
 847                 {
 848                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_ERROR_SIGNING_HASH);
 849                 capi_addlasterror();
 850                 goto err;
 851                 }
 852         else
 853                 {
 854                 ret = 1;
 855                 /* Inplace byte reversal of signature */
 856                 for(i = 0; i < slen / 2; i++)
 857                         {
 858                         unsigned char c;
 859                         c = sigret[i];
 860                         sigret[i] = sigret[slen - i - 1];
 861                         sigret[slen - i - 1] = c;
 862                         }
 863                 *siglen = slen;
 864                 }
 865
 866         /* Now cleanup */
 867
 868 err:
 869         CryptDestroyHash(hash);
 870
 871         return ret;
 872         }
 873
 874 int capi_rsa_priv_dec(int flen, const unsigned char *from,
 875                 unsigned char *to, RSA *rsa, int padding)
 876         {
 877         int i;
 878         unsigned char *tmpbuf;
 879         CAPI_KEY *capi_key;
 880         CAPI_CTX *ctx;
 881         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 882
 883         CAPI_trace(ctx, "Called capi_rsa_priv_dec()\n");
 884
 885
 886         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 887         if (!capi_key)
 888                 {
 889                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_CANT_GET_KEY);
 890                 return -1;
 891                 }
 892
 893         if(padding != RSA_PKCS1_PADDING)
 894                 {
 895                 char errstr[10];
 896                 BIO_snprintf(errstr, 10, "%d", padding);
 897                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_UNSUPPORTED_PADDING);
 898                 ERR_add_error_data(2, "padding=", errstr);
 899                 return -1;
 900                 }
 901
 902         /* Create temp reverse order version of input */
 903         if(!(tmpbuf = OPENSSL_malloc(flen)) )
 904                 {
 905                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, ERR_R_MALLOC_FAILURE);
 906                 return -1;
 907                 }
 908         for(i = 0; i < flen; i++)
 909                 tmpbuf[flen - i - 1] = from[i];
 910
 911         /* Finally decrypt it */
 912         if(!CryptDecrypt(capi_key->key, 0, TRUE, 0, tmpbuf, &flen))
 913                 {
 914                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_DECRYPT_ERROR);
 915                 capi_addlasterror();
 916                 OPENSSL_free(tmpbuf);
 917                 return -1;
 918                 }
 919         else memcpy(to, tmpbuf, flen);
 920
 921         OPENSSL_free(tmpbuf);
 922
 923         return flen;
 924         }
 925
 926 static int capi_rsa_free(RSA *rsa)
 927         {
 928         CAPI_KEY *capi_key;
 929         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 930         capi_free_key(capi_key);
 931         RSA_set_ex_data(rsa, rsa_capi_idx, 0);
 932         return 1;
 933         }
 934
 935 /* CryptoAPI DSA operations */
 936
 937 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
 938                                                                 DSA *dsa)
 939         {
 940         HCRYPTHASH hash;
 941         DWORD slen;
 942         DSA_SIG *ret = NULL;
 943         CAPI_KEY *capi_key;
 944         CAPI_CTX *ctx;
 945         unsigned char csigbuf[40];
 946
 947         ctx = ENGINE_get_ex_data(dsa->engine, capi_idx);
 948
 949         CAPI_trace(ctx, "Called CAPI_dsa_do_sign()\n");
 950
 951         capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
 952
 953         if (!capi_key)
 954                 {
 955                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_GET_KEY);
 956                 return NULL;
 957                 }
 958
 959         if (dlen != 20)
 960                 {
 961                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_INVALID_DIGEST_LENGTH);
 962                 return NULL;
 963                 }
 964
 965         /* Create the hash object */
 966         if(!CryptCreateHash(capi_key->hprov, CALG_SHA1, 0, 0, &hash))
 967                 {
 968                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
 969                 capi_addlasterror();
 970                 return NULL;
 971                 }
 972
 973         /* Set the hash value to the value passed */
 974         if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)digest, 0))
 975                 {
 976                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
 977                 capi_addlasterror();
 978                 goto err;
 979                 }
 980
 981
 982         /* Finally sign it */
 983         slen = sizeof(csigbuf);
 984         if(!CryptSignHashA(hash, capi_key->keyspec, NULL, 0, csigbuf, &slen))
 985                 {
 986                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_ERROR_SIGNING_HASH);
 987                 capi_addlasterror();
 988                 goto err;
 989                 }
 990         else
 991                 {
 992                 ret = DSA_SIG_new();
 993                 if (!ret)
 994                         goto err;
 995                 ret->r = BN_new();
 996                 ret->s = BN_new();
 997                 if (!ret->r || !ret->s)
 998                         goto err;
 999                 if (!lend_tobn(ret->r, csigbuf, 20)
1000                         || !lend_tobn(ret->s, csigbuf + 20, 20))
1001                         {
1002                         DSA_SIG_free(ret);
1003                         ret = NULL;
1004                         goto err;
1005                         }
1006                 }
1007
1008         /* Now cleanup */
1009
1010 err:
1011         OPENSSL_cleanse(csigbuf, 40);
1012         CryptDestroyHash(hash);
1013         return ret;
1014         }
1015
1016 static int capi_dsa_free(DSA *dsa)
1017         {
1018         CAPI_KEY *capi_key;
1019         capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
1020         capi_free_key(capi_key);
1021         DSA_set_ex_data(dsa, dsa_capi_idx, 0);
1022         return 1;
1023         }
1024
1025 static void capi_vtrace(CAPI_CTX *ctx, int level, char *format, va_list argptr)
1026         {
1027         BIO *out;
1028
1029         if (!ctx || (ctx->debug_level < level) || (!ctx->debug_file))
1030                 return;
1031         out = BIO_new_file(ctx->debug_file, "a+");
1032         BIO_vprintf(out, format, argptr);
1033         BIO_free(out);
1034         }
1035
1036 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...)
1037         {
1038         va_list args;
1039         va_start(args, format);
1040         capi_vtrace(ctx, CAPI_DBG_TRACE, format, args);
1041         va_end(args);
1042         }
1043
1044 static void capi_addlasterror(void)
1045         {
1046         capi_adderror(GetLastError());
1047         }
1048
1049 static void capi_adderror(DWORD err)
1050         {
1051         char errstr[10];
1052         BIO_snprintf(errstr, 10, "%lX", err);
1053         ERR_add_error_data(2, "Error code= 0x", errstr);
1054         }
1055
1056 static char *wide_to_asc(LPWSTR wstr)
1057         {
1058         char *str;
1059         int len_0,sz;
1060
1061         if (!wstr)
1062                 return NULL;
1063         len_0 = (int)wcslen(wstr)+1;    /* WideCharToMultiByte expects int */
1064         sz = WideCharToMultiByte(CP_ACP,0,wstr,len_0,NULL,0,NULL,NULL);
1065         if (!sz)
1066                 {
1067                 CAPIerr(CAPI_F_WIDE_TO_ASC, CAPI_R_WIN32_ERROR);
1068                 return NULL;
1069                 }
1070         str = OPENSSL_malloc(sz);
1071         if (!str)
1072                 {
1073                 CAPIerr(CAPI_F_WIDE_TO_ASC, ERR_R_MALLOC_FAILURE);
1074                 return NULL;
1075                 }
1076         if (!WideCharToMultiByte(CP_ACP,0,wstr,len_0,str,sz,NULL,NULL))
1077                 {
1078                 OPENSSL_free(str);
1079                 CAPIerr(CAPI_F_WIDE_TO_ASC, CAPI_R_WIN32_ERROR);
1080                 return NULL;
1081                 }
1082         return str;
1083         }
1084
1085 static int capi_get_provname(CAPI_CTX *ctx, LPSTR *pname, DWORD *ptype, DWORD idx)
1086         {
1087         LPSTR name;
1088         DWORD len, err;
1089         CAPI_trace(ctx, "capi_get_provname, index=%d\n", idx);
1090         if (!CryptEnumProvidersA(idx, NULL, 0, ptype, NULL, &len))
1091                 {
1092                 err = GetLastError();
1093                 if (err == ERROR_NO_MORE_ITEMS)
1094                         return 2;
1095                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1096                 capi_adderror(err);
1097                 return 0;
1098                 }
1099         name = OPENSSL_malloc(len);
1100         if (!CryptEnumProvidersA(idx, NULL, 0, ptype, name, &len))
1101                 {
1102                 err = GetLastError();
1103                 if (err == ERROR_NO_MORE_ITEMS)
1104                         return 2;
1105                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1106                 capi_adderror(err);
1107                 return 0;
1108                 }
1109         *pname = name;
1110         CAPI_trace(ctx, "capi_get_provname, returned name=%s, type=%d\n", name, *ptype);
1111
1112         return 1;
1113         }
1114
1115 static int capi_list_providers(CAPI_CTX *ctx, BIO *out)
1116         {
1117         DWORD idx, ptype;
1118         int ret;
1119         LPSTR provname = NULL;
1120         CAPI_trace(ctx, "capi_list_providers\n");
1121         BIO_printf(out, "Available CSPs:\n");
1122         for(idx = 0; ; idx++)
1123                 {
1124                 ret = capi_get_provname(ctx, &provname, &ptype, idx);
1125                 if (ret == 2)
1126                         break;
1127                 if (ret == 0)
1128                         break;
1129                 BIO_printf(out, "%d. %s, type %d\n", idx, provname, ptype);
1130                 OPENSSL_free(provname);
1131                 }
1132         return 1;
1133         }
1134
1135 static int capi_list_containers(CAPI_CTX *ctx, BIO *out)
1136         {
1137         int ret = 1;
1138         HCRYPTPROV hprov;
1139         DWORD err, idx, flags, buflen = 0, clen;
1140         LPSTR cname;
1141         CAPI_trace(ctx, "Listing containers CSP=%s, type = %d\n", ctx->cspname, ctx->csptype);
1142         if (!CryptAcquireContextA(&hprov, NULL, ctx->cspname, ctx->csptype, CRYPT_VERIFYCONTEXT))
1143                 {
1144                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1145                 capi_addlasterror();
1146                 return 0;
1147                 }
1148         if (!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, NULL, &buflen, CRYPT_FIRST))
1149                 {
1150                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1151                 capi_addlasterror();
1152                 return 0;
1153                 }
1154         CAPI_trace(ctx, "Got max container len %d\n", buflen);
1155         if (buflen == 0)
1156                 buflen = 1024;
1157         cname = OPENSSL_malloc(buflen);
1158         if (!cname)
1159                 {
1160                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, ERR_R_MALLOC_FAILURE);
1161                 goto err;
1162                 }
1163
1164         for (idx = 0;;idx++)
1165                 {
1166                 clen = buflen;
1167                 cname[0] = 0;
1168
1169                 if (idx == 0)
1170                         flags = CRYPT_FIRST;
1171                 else
1172                         flags = 0;
1173                 if(!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, cname, &clen, flags))
1174                         {
1175                         err = GetLastError();
1176                         if (err == ERROR_NO_MORE_ITEMS)
1177                                 goto done;
1178                         CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1179                         capi_adderror(err);
1180                         goto err;
1181                         }
1182                 CAPI_trace(ctx, "Container name %s, len=%d, index=%d, flags=%d\n", cname, clen, idx, flags);
1183                 if (!cname[0] && (clen == buflen))
1184                         {
1185                         CAPI_trace(ctx, "Enumerate bug: using workaround\n");
1186                         goto done;
1187                         }
1188                 BIO_printf(out, "%d. %s\n", idx, cname);
1189                 }
1190         err:
1191
1192         ret = 0;
1193
1194         done:
1195         if (cname)
1196                 OPENSSL_free(cname);
1197         CryptReleaseContext(hprov, 0);
1198
1199         return ret;
1200         }
1201
1202 CRYPT_KEY_PROV_INFO *capi_get_prov_info(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1203         {
1204         DWORD len;
1205         CRYPT_KEY_PROV_INFO *pinfo;
1206
1207         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, NULL, &len))
1208                 return NULL;
1209         pinfo = OPENSSL_malloc(len);
1210         if (!pinfo)
1211                 {
1212                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, ERR_R_MALLOC_FAILURE);
1213                 return NULL;
1214                 }
1215         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, pinfo, &len))
1216                 {
1217                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, CAPI_R_ERROR_GETTING_KEY_PROVIDER_INFO);
1218                 capi_addlasterror();
1219                 OPENSSL_free(pinfo);
1220                 return NULL;
1221                 }
1222         return pinfo;
1223         }
1224
1225 static void capi_dump_prov_info(CAPI_CTX *ctx, BIO *out, CRYPT_KEY_PROV_INFO *pinfo)
1226         {
1227         char *provname = NULL, *contname = NULL;
1228         if (!pinfo)
1229                 {
1230                 BIO_printf(out, "  No Private Key\n");
1231                 return;
1232                 }
1233         provname = wide_to_asc(pinfo->pwszProvName);
1234         contname = wide_to_asc(pinfo->pwszContainerName);
1235         if (!provname || !contname)
1236                 goto err;
1237
1238         BIO_printf(out, "  Private Key Info:\n");
1239         BIO_printf(out, "    Provider Name:  %s, Provider Type %d\n", provname, pinfo->dwProvType);
1240         BIO_printf(out, "    Container Name: %s, Key Type %d\n", contname, pinfo->dwKeySpec);
1241         err:
1242         if (provname)
1243                 OPENSSL_free(provname);
1244         if (contname)
1245                 OPENSSL_free(contname);
1246         }
1247
1248 char * capi_cert_get_fname(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1249         {
1250         LPWSTR wfname;
1251         DWORD dlen;
1252
1253         CAPI_trace(ctx, "capi_cert_get_fname\n");
1254         if (!CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, NULL, &dlen))
1255                 return NULL;
1256         wfname = OPENSSL_malloc(dlen);
1257         if (CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, wfname, &dlen))
1258                 {
1259                 char *fname = wide_to_asc(wfname);
1260                 OPENSSL_free(wfname);
1261                 return fname;
1262                 }
1263         CAPIerr(CAPI_F_CAPI_CERT_GET_FNAME, CAPI_R_ERROR_GETTING_FRIENDLY_NAME);
1264         capi_addlasterror();
1265
1266         OPENSSL_free(wfname);
1267         return NULL;
1268         }
1269
1270
1271 void capi_dump_cert(CAPI_CTX *ctx, BIO *out, PCCERT_CONTEXT cert)
1272         {
1273         X509 *x;
1274         unsigned char *p;
1275         unsigned long flags = ctx->dump_flags;
1276         if (flags & CAPI_DMP_FNAME)
1277                 {
1278                 char *fname;
1279                 fname = capi_cert_get_fname(ctx, cert);
1280                 if (fname)
1281                         {
1282                         BIO_printf(out, "  Friendly Name \"%s\"\n", fname);
1283                         OPENSSL_free(fname);
1284                         }
1285                 else
1286                         BIO_printf(out, "  <No Friendly Name>\n");
1287                 }
1288
1289         p = cert->pbCertEncoded;
1290         x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1291         if (!x)
1292                 BIO_printf(out, "  <Can't parse certificate>\n");
1293         if (flags & CAPI_DMP_SUMMARY)
1294                 {
1295                 BIO_printf(out, "  Subject: ");
1296                 X509_NAME_print_ex(out, X509_get_subject_name(x), 0, XN_FLAG_ONELINE);
1297                 BIO_printf(out, "\n  Issuer: ");
1298                 X509_NAME_print_ex(out, X509_get_issuer_name(x), 0, XN_FLAG_ONELINE);
1299                 BIO_printf(out, "\n");
1300                 }
1301         if (flags & CAPI_DMP_FULL)
1302                 X509_print_ex(out, x, XN_FLAG_ONELINE,0);
1303
1304         if (flags & CAPI_DMP_PKEYINFO)
1305                 {
1306                 CRYPT_KEY_PROV_INFO *pinfo;
1307                 pinfo = capi_get_prov_info(ctx, cert);
1308                 capi_dump_prov_info(ctx, out, pinfo);
1309                 if (pinfo)
1310                         OPENSSL_free(pinfo);
1311                 }
1312
1313         if (flags & CAPI_DMP_PEM)
1314                 PEM_write_bio_X509(out, x);
1315         X509_free(x);
1316         }
1317
1318 HCERTSTORE capi_open_store(CAPI_CTX *ctx, char *storename)
1319         {
1320         HCERTSTORE hstore;
1321
1322         if (!storename)
1323                 storename = ctx->storename;
1324         if (!storename)
1325                 storename = "MY";
1326         CAPI_trace(ctx, "Opening certificate store %s\n", storename);
1327
1328         hstore = CertOpenStore(CERT_STORE_PROV_SYSTEM_A, 0, 0,
1329                                 ctx->store_flags, storename);
1330         if (!hstore)
1331                 {
1332                 CAPIerr(CAPI_F_CAPI_OPEN_STORE, CAPI_R_ERROR_OPENING_STORE);
1333                 capi_addlasterror();
1334                 }
1335         return hstore;
1336         }
1337
1338 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *id)
1339         {
1340         char *storename;
1341         int idx;
1342         int ret = 1;
1343         HCERTSTORE hstore;
1344         PCCERT_CONTEXT cert = NULL;
1345
1346         storename = ctx->storename;
1347         if (!storename)
1348                 storename = "MY";
1349         CAPI_trace(ctx, "Listing certs for store %s\n", storename);
1350
1351         hstore = capi_open_store(ctx, storename);
1352         if (!hstore)
1353                 return 0;
1354         if (id)
1355                 {
1356                 cert = capi_find_cert(ctx, id, hstore);
1357                 if (!cert)
1358                         {
1359                         ret = 0;
1360                         goto err;
1361                         }
1362                 capi_dump_cert(ctx, out, cert);
1363                 CertFreeCertificateContext(cert);
1364                 }
1365         else
1366                 {
1367                 for(idx = 0;;idx++)
1368                         {
1369                         LPWSTR fname = NULL;
1370                         cert = CertEnumCertificatesInStore(hstore, cert);
1371                         if (!cert)
1372                                 break;
1373                         BIO_printf(out, "Certificate %d\n", idx);
1374                         capi_dump_cert(ctx, out, cert);
1375                         }
1376                 }
1377         err:
1378         CertCloseStore(hstore, 0);
1379         return ret;
1380         }
1381
1382 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore)
1383         {
1384         PCCERT_CONTEXT cert = NULL;
1385         char *fname = NULL;
1386         int match;
1387         switch(ctx->lookup_method)
1388                 {
1389                 case CAPI_LU_SUBSTR:
1390                         return CertFindCertificateInStore(hstore,
1391                                         X509_ASN_ENCODING, 0,
1392                                         CERT_FIND_SUBJECT_STR_A, id, NULL);
1393                 case CAPI_LU_FNAME:
1394                         for(;;)
1395                                 {
1396                                 cert = CertEnumCertificatesInStore(hstore, cert);
1397                                 if (!cert)
1398                                         return NULL;
1399                                 fname = capi_cert_get_fname(ctx, cert);
1400                                 if (fname)
1401                                         {
1402                                         if (strcmp(fname, id))
1403                                                 match = 0;
1404                                         else
1405                                                 match = 1;
1406                                         OPENSSL_free(fname);
1407                                         if (match)
1408                                                 return cert;
1409                                         }
1410                                 }
1411                 default:
1412                         return NULL;
1413                 }
1414         }
1415
1416 static CAPI_KEY *capi_get_key(CAPI_CTX *ctx, const char *contname, char *provname, DWORD ptype, DWORD keyspec)
1417         {
1418         CAPI_KEY *key;
1419         key = OPENSSL_malloc(sizeof(CAPI_KEY));
1420         CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n",
1421                                                 contname, provname, ptype);
1422         if (!CryptAcquireContextA(&key->hprov, contname, provname, ptype, 0))
1423                 {
1424                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1425                 capi_addlasterror();
1426                 goto err;
1427                 }
1428         if (!CryptGetUserKey(key->hprov, keyspec, &key->key))
1429                 {
1430                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_GETUSERKEY_ERROR);
1431                 capi_addlasterror();
1432                 CryptReleaseContext(key->hprov, 0);
1433                 goto err;
1434                 }
1435         key->keyspec = keyspec;
1436         key->pcert = NULL;
1437         return key;
1438
1439         err:
1440         OPENSSL_free(key);
1441         return NULL;
1442         }
1443
1444 static CAPI_KEY *capi_get_cert_key(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1445         {
1446         CAPI_KEY *key = NULL;
1447         CRYPT_KEY_PROV_INFO *pinfo = NULL;
1448         char *provname = NULL, *contname = NULL;
1449         pinfo = capi_get_prov_info(ctx, cert);
1450         if (!pinfo)
1451                 goto err;
1452         provname = wide_to_asc(pinfo->pwszProvName);
1453         contname = wide_to_asc(pinfo->pwszContainerName);
1454         if (!provname || !contname)
1455                 goto err;
1456         key = capi_get_key(ctx, contname, provname,
1457                                 pinfo->dwProvType, pinfo->dwKeySpec);
1458
1459         err:
1460         if (pinfo)
1461                 OPENSSL_free(pinfo);
1462         if (provname)
1463                 OPENSSL_free(provname);
1464         if (contname)
1465                 OPENSSL_free(contname);
1466         return key;
1467         }
1468
1469 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id)
1470         {
1471         PCCERT_CONTEXT cert;
1472         HCERTSTORE hstore;
1473         CAPI_KEY *key = NULL;
1474         switch (ctx->lookup_method)
1475                 {
1476                 case CAPI_LU_SUBSTR:
1477                 case CAPI_LU_FNAME:
1478                 hstore = capi_open_store(ctx, NULL);
1479                 if (!hstore)
1480                         return NULL;
1481                 cert = capi_find_cert(ctx, id, hstore);
1482                 if (cert)
1483                         {
1484                         key = capi_get_cert_key(ctx, cert);
1485                         CertFreeCertificateContext(cert);
1486                         }
1487                 CertCloseStore(hstore, 0);
1488                 break;
1489
1490                 case CAPI_LU_CONTNAME:
1491                 key = capi_get_key(ctx, id, ctx->cspname, ctx->csptype,
1492                                                         ctx->keytype);
1493                 break;
1494                 }
1495
1496         return key;
1497         }
1498
1499 void capi_free_key(CAPI_KEY *key)
1500         {
1501         if (!key)
1502                 return;
1503         CryptDestroyKey(key->key);
1504         CryptReleaseContext(key->hprov, 0);
1505         if (key->pcert)
1506                 CertFreeCertificateContext(key->pcert);
1507         OPENSSL_free(key);
1508         }
1509
1510
1511 /* Initialize a CAPI_CTX structure */
1512
1513 static CAPI_CTX *capi_ctx_new()
1514         {
1515         CAPI_CTX *ctx;
1516         ctx = OPENSSL_malloc(sizeof(CAPI_CTX));
1517         if (!ctx)
1518                 {
1519                 CAPIerr(CAPI_F_CAPI_CTX_NEW, ERR_R_MALLOC_FAILURE);
1520                 return NULL;
1521                 }
1522         ctx->cspname = NULL;
1523         ctx->csptype = PROV_RSA_FULL;
1524         ctx->dump_flags = CAPI_DMP_SUMMARY|CAPI_DMP_FNAME;
1525         ctx->keytype = AT_KEYEXCHANGE;
1526         ctx->storename = NULL;
1527         ctx->ssl_client_store = NULL;
1528         ctx->store_flags = CERT_STORE_OPEN_EXISTING_FLAG |
1529                                 CERT_STORE_READONLY_FLAG |
1530                                 CERT_SYSTEM_STORE_CURRENT_USER;
1531         ctx->lookup_method = CAPI_LU_SUBSTR;
1532         ctx->debug_level = 0;
1533         ctx->debug_file = NULL;
1534         ctx->client_cert_select = cert_select_simple;
1535         return ctx;
1536         }
1537
1538 static void capi_ctx_free(CAPI_CTX *ctx)
1539         {
1540         CAPI_trace(ctx, "Calling capi_ctx_free with %lx\n", ctx);
1541         if (!ctx)
1542                 return;
1543         if (ctx->cspname)
1544                 OPENSSL_free(ctx->cspname);
1545         if (ctx->debug_file)
1546                 OPENSSL_free(ctx->debug_file);
1547         if (ctx->storename)
1548                 OPENSSL_free(ctx->storename);
1549         if (ctx->ssl_client_store)
1550                 OPENSSL_free(ctx->ssl_client_store);
1551         OPENSSL_free(ctx);
1552         }
1553
1554 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check)
1555         {
1556         CAPI_trace(ctx, "capi_ctx_set_provname, name=%s, type=%d\n", pname, type);
1557         if (check)
1558                 {
1559                 HCRYPTPROV hprov;
1560                 if (!CryptAcquireContextA(&hprov, NULL, pname, type,
1561                                                 CRYPT_VERIFYCONTEXT))
1562                         {
1563                         CAPIerr(CAPI_F_CAPI_CTX_SET_PROVNAME, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1564                         capi_addlasterror();
1565                         return 0;
1566                         }
1567                 CryptReleaseContext(hprov, 0);
1568                 }
1569         ctx->cspname = BUF_strdup(pname);
1570         ctx->csptype = type;
1571         return 1;
1572         }
1573
1574 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx)
1575         {
1576         LPSTR pname;
1577         DWORD type;
1578         if (capi_get_provname(ctx, &pname, &type, idx) != 1)
1579                 return 0;
1580         return capi_ctx_set_provname(ctx, pname, type, 0);
1581         }
1582
1583 static int cert_issuer_match(STACK_OF(X509_NAME) *ca_dn, X509 *x)
1584         {
1585         int i;
1586         X509_NAME *nm;
1587         /* Special case: empty list: match anything */
1588         if (sk_X509_NAME_num(ca_dn) <= 0)
1589                 return 1;
1590         for (i = 0; i < sk_X509_NAME_num(ca_dn); i++)
1591                 {
1592                 nm = sk_X509_NAME_value(ca_dn, i);
1593                 if (!X509_NAME_cmp(nm, X509_get_issuer_name(x)))
1594                                 return 1;
1595                 }
1596         return 0;
1597         }
1598
1599
1600
1601 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
1602         STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey,
1603         STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data)
1604         {
1605         STACK_OF(X509) *certs = NULL;
1606         X509 *x;
1607         char *storename;
1608         const char *p;
1609         int i, client_cert_idx;
1610         HCERTSTORE hstore;
1611         PCCERT_CONTEXT cert = NULL, excert = NULL;
1612         CAPI_CTX *ctx;
1613         CAPI_KEY *key;
1614         ctx = ENGINE_get_ex_data(e, capi_idx);
1615
1616         *pcert = NULL;
1617         *pkey = NULL;
1618
1619         storename = ctx->ssl_client_store;
1620         if (!storename)
1621                 storename = "MY";
1622
1623         hstore = capi_open_store(ctx, storename);
1624         if (!hstore)
1625                 return 0;
1626         /* Enumerate all certificates collect any matches */
1627         for(i = 0;;i++)
1628                 {
1629                 cert = CertEnumCertificatesInStore(hstore, cert);
1630                 if (!cert)
1631                         break;
1632                 p = cert->pbCertEncoded;
1633                 x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1634                 if (!x)
1635                         {
1636                         CAPI_trace(ctx, "Can't Parse Certificate %d\n", i);
1637                         continue;
1638                         }
1639                 if (cert_issuer_match(ca_dn, x)
1640                         && X509_check_purpose(x, X509_PURPOSE_SSL_CLIENT, 0))
1641                         {
1642                         key = capi_get_cert_key(ctx, cert);
1643                         if (!key)
1644                                 {
1645                                 X509_free(x);
1646                                 continue;
1647                                 }
1648                         /* Match found: attach extra data to it so
1649                          * we can retrieve the key later.
1650                          */
1651                         excert = CertDuplicateCertificateContext(cert);
1652                         key->pcert = excert;
1653                         X509_set_ex_data(x, cert_capi_idx, key);
1654
1655                         if (!certs)
1656                                 certs = sk_X509_new_null();
1657
1658                         sk_X509_push(certs, x);
1659                         }
1660                 else
1661                         X509_free(x);
1662
1663                 }
1664
1665         if (cert)
1666                 CertFreeCertificateContext(cert);
1667         if (hstore)
1668                 CertCloseStore(hstore, 0);
1669
1670         if (!certs)
1671                 return 0;
1672
1673
1674         /* Select the appropriate certificate */
1675
1676         client_cert_idx = ctx->client_cert_select(e, ssl, certs);
1677
1678         /* Set the selected certificate and free the rest */
1679
1680         for(i = 0; i < sk_X509_num(certs); i++)
1681                 {
1682                 x = sk_X509_value(certs, i);
1683                 if (i == client_cert_idx)
1684                         *pcert = x;
1685                 else
1686                         {
1687                         key = X509_get_ex_data(x, cert_capi_idx);
1688                         capi_free_key(key);
1689                         X509_free(x);
1690                         }
1691                 }
1692
1693         sk_X509_free(certs);
1694
1695         if (!*pcert)
1696                 return 0;
1697
1698         /* Setup key for selected certificate */
1699
1700         key = X509_get_ex_data(*pcert, cert_capi_idx);
1701         *pkey = capi_get_pkey(e, key);
1702         X509_set_ex_data(*pcert, cert_capi_idx, NULL);
1703
1704         return 1;
1705
1706         }
1707
1708
1709 /* Simple client cert selection function: always select first */
1710
1711 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1712         {
1713         return 0;
1714         }
1715
1716 #ifdef OPENSSL_CAPIENG_DIALOG
1717
1718 /* More complex cert selection function, using standard function
1719  * CryptUIDlgSelectCertificateFromStore() to produce a dialog box.
1720  */
1721
1722 /* Definitions which are in cryptuiapi.h but this is not present in older
1723  * versions of headers.
1724  */
1725
1726 #ifndef CRYPTUI_SELECT_LOCATION_COLUMN
1727 #define CRYPTUI_SELECT_LOCATION_COLUMN                   0x000000010
1728 #define CRYPTUI_SELECT_INTENDEDUSE_COLUMN                0x000000004
1729 #endif
1730
1731 #define dlg_title L"OpenSSL Application SSL Client Certificate Selection"
1732 #define dlg_prompt L"Select a certificate to use for authentication"
1733 #define dlg_columns      CRYPTUI_SELECT_LOCATION_COLUMN \
1734                         |CRYPTUI_SELECT_INTENDEDUSE_COLUMN
1735
1736 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1737         {
1738         X509 *x;
1739         HCERTSTORE dstore;
1740         PCCERT_CONTEXT cert;
1741         CAPI_CTX *ctx;
1742         CAPI_KEY *key;
1743         HWND hwnd;
1744         int i, idx = -1;
1745         if (sk_X509_num(certs) == 1)
1746                 return 0;
1747         ctx = ENGINE_get_ex_data(e, capi_idx);
1748         /* Create an in memory store of certificates */
1749         dstore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
1750                                         CERT_STORE_CREATE_NEW_FLAG, NULL);
1751         if (!dstore)
1752                 {
1753                 CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_CREATING_STORE);
1754                 capi_addlasterror();
1755                 goto err;
1756                 }
1757         /* Add all certificates to store */
1758         for(i = 0; i < sk_X509_num(certs); i++)
1759                 {
1760                 x = sk_X509_value(certs, i);
1761                 key = X509_get_ex_data(x, cert_capi_idx);
1762
1763                 if (!CertAddCertificateContextToStore(dstore, key->pcert,
1764                                                 CERT_STORE_ADD_NEW, NULL))
1765                         {
1766                         CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_ADDING_CERT);
1767                         capi_addlasterror();
1768                         goto err;
1769                         }
1770
1771                 }
1772         hwnd = GetForegroundWindow();
1773         if (!hwnd)
1774                 hwnd = GetActiveWindow();
1775         if (!hwnd && ctx->getconswindow)
1776                 hwnd = ctx->getconswindow();
1777         /* Call dialog to select one */
1778         cert = ctx->certselectdlg(dstore, hwnd, dlg_title, dlg_prompt,
1779                                                 dlg_columns, 0, NULL);
1780
1781         /* Find matching cert from list */
1782         if (cert)
1783                 {
1784                 for(i = 0; i < sk_X509_num(certs); i++)
1785                         {
1786                         x = sk_X509_value(certs, i);
1787                         key = X509_get_ex_data(x, cert_capi_idx);
1788                         if (CertCompareCertificate(
1789                                 X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
1790                                         cert->pCertInfo,
1791                                         key->pcert->pCertInfo))
1792                                 {
1793                                 idx = i;
1794                                 break;
1795                                 }
1796                         }
1797                 }
1798
1799         err:
1800         if (dstore)
1801                 CertCloseStore(dstore, 0);
1802         return idx;
1803
1804         }
1805 #endif
1806
1807 #else /* !__COMPILE_CAPIENG */
1808 #include <openssl/engine.h>
1809 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
1810 OPENSSL_EXPORT
1811 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns) { return 0; }
1812 IMPLEMENT_DYNAMIC_CHECK_FN()
1813 #else
1814 void ENGINE_load_capi(void){}
1815 #endif
1816 #endif