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. The native MingW32 headers up to and
  80  * including __W32API_VERSION 3.14 lack of struct DSSPUBKEY and the
  81  * defines CERT_STORE_PROV_SYSTEM_A and CERT_STORE_READONLY_FLAG,
  82  * so we check for these too and avoid compiling.
  83  * Yes, it's rather "weak" test and if compilation fails,
  84  * then re-configure with -DOPENSSL_NO_CAPIENG.
  85  */
  86 #if defined(CERT_KEY_PROV_INFO_PROP_ID) && \
  87     defined(CERT_STORE_PROV_SYSTEM_A) && \
  88     defined(CERT_STORE_READONLY_FLAG)
  89 # define __COMPILE_CAPIENG
  90 #endif /* CERT_KEY_PROV_INFO_PROP_ID */
  91 #endif /* OPENSSL_NO_CAPIENG */
  92 #endif /* OPENSSL_SYS_WIN32 */
  93
  94 #ifdef __COMPILE_CAPIENG
  95
  96 #undef X509_EXTENSIONS
  97 #undef X509_CERT_PAIR
  98
  99 /* Definitions which may be missing from earlier version of headers */
 100 #ifndef CERT_STORE_OPEN_EXISTING_FLAG
 101 #define CERT_STORE_OPEN_EXISTING_FLAG                   0x00004000
 102 #endif
 103
 104 #ifndef CERT_STORE_CREATE_NEW_FLAG
 105 #define CERT_STORE_CREATE_NEW_FLAG                      0x00002000
 106 #endif
 107
 108 #ifndef CERT_SYSTEM_STORE_CURRENT_USER
 109 #define CERT_SYSTEM_STORE_CURRENT_USER                  0x00010000
 110 #endif
 111
 112 #include <openssl/engine.h>
 113 #include <openssl/pem.h>
 114 #include <openssl/x509v3.h>
 115
 116 #include "e_capi_err.h"
 117 #include "e_capi_err.c"
 118
 119
 120 static const char *engine_capi_id = "capi";
 121 static const char *engine_capi_name = "CryptoAPI ENGINE";
 122
 123 typedef struct CAPI_CTX_st CAPI_CTX;
 124 typedef struct CAPI_KEY_st CAPI_KEY;
 125
 126 static void capi_addlasterror(void);
 127 static void capi_adderror(DWORD err);
 128
 129 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...);
 130
 131 static int capi_list_providers(CAPI_CTX *ctx, BIO *out);
 132 static int capi_list_containers(CAPI_CTX *ctx, BIO *out);
 133 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *storename);
 134 void capi_free_key(CAPI_KEY *key);
 135
 136 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore);
 137
 138 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id);
 139
 140 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
 141         UI_METHOD *ui_method, void *callback_data);
 142 static int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 143              unsigned char *sigret, unsigned int *siglen, const RSA *rsa);
 144 static int capi_rsa_priv_enc(int flen, const unsigned char *from,
 145                 unsigned char *to, RSA *rsa, int padding);
 146 static int capi_rsa_priv_dec(int flen, const unsigned char *from,
 147                 unsigned char *to, RSA *rsa, int padding);
 148 static int capi_rsa_free(RSA *rsa);
 149
 150 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
 151                                                         DSA *dsa);
 152 static int capi_dsa_free(DSA *dsa);
 153
 154 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
 155         STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey,
 156         STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data);
 157
 158 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
 159 #ifdef OPENSSL_CAPIENG_DIALOG
 160 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
 161 #endif
 162
 163 typedef PCCERT_CONTEXT (WINAPI *CERTDLG)(HCERTSTORE, HWND, LPCWSTR,
 164                                                 LPCWSTR, DWORD, DWORD,
 165                                                 void *);
 166 typedef HWND (WINAPI *GETCONSWIN)(void);
 167
 168 /* This structure contains CAPI ENGINE specific data:
 169  * it contains various global options and affects how
 170  * other functions behave.
 171  */
 172
 173 #define CAPI_DBG_TRACE  2
 174 #define CAPI_DBG_ERROR  1
 175
 176 struct CAPI_CTX_st {
 177         int debug_level;
 178         char *debug_file;
 179         /* Parameters to use for container lookup */
 180         DWORD keytype;
 181         LPSTR cspname;
 182         DWORD csptype;
 183         /* Certificate store name to use */
 184         LPSTR storename;
 185         LPSTR ssl_client_store;
 186         /* System store flags */
 187         DWORD store_flags;
 188
 189 /* Lookup string meanings in load_private_key */
 190 /* Substring of subject: uses "storename" */
 191 #define CAPI_LU_SUBSTR          1
 192 /* Friendly name: uses storename */
 193 #define CAPI_LU_FNAME           2
 194 /* Container name: uses cspname, keytype */
 195 #define CAPI_LU_CONTNAME        3
 196         int lookup_method;
 197 /* Info to dump with dumpcerts option */
 198 /* Issuer and serial name strings */
 199 #define CAPI_DMP_SUMMARY        0x1
 200 /* Friendly name */
 201 #define CAPI_DMP_FNAME          0x2
 202 /* Full X509_print dump */
 203 #define CAPI_DMP_FULL           0x4
 204 /* Dump PEM format certificate */
 205 #define CAPI_DMP_PEM            0x8
 206 /* Dump pseudo key (if possible) */
 207 #define CAPI_DMP_PSKEY          0x10
 208 /* Dump key info (if possible) */
 209 #define CAPI_DMP_PKEYINFO       0x20
 210
 211         DWORD dump_flags;
 212         int (*client_cert_select)(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
 213
 214         CERTDLG certselectdlg;
 215         GETCONSWIN getconswindow;
 216 };
 217
 218
 219 static CAPI_CTX *capi_ctx_new();
 220 static void capi_ctx_free(CAPI_CTX *ctx);
 221 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check);
 222 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx);
 223
 224 #define CAPI_CMD_LIST_CERTS             ENGINE_CMD_BASE
 225 #define CAPI_CMD_LOOKUP_CERT            (ENGINE_CMD_BASE + 1)
 226 #define CAPI_CMD_DEBUG_LEVEL            (ENGINE_CMD_BASE + 2)
 227 #define CAPI_CMD_DEBUG_FILE             (ENGINE_CMD_BASE + 3)
 228 #define CAPI_CMD_KEYTYPE                (ENGINE_CMD_BASE + 4)
 229 #define CAPI_CMD_LIST_CSPS              (ENGINE_CMD_BASE + 5)
 230 #define CAPI_CMD_SET_CSP_IDX            (ENGINE_CMD_BASE + 6)
 231 #define CAPI_CMD_SET_CSP_NAME           (ENGINE_CMD_BASE + 7)
 232 #define CAPI_CMD_SET_CSP_TYPE           (ENGINE_CMD_BASE + 8)
 233 #define CAPI_CMD_LIST_CONTAINERS        (ENGINE_CMD_BASE + 9)
 234 #define CAPI_CMD_LIST_OPTIONS           (ENGINE_CMD_BASE + 10)
 235 #define CAPI_CMD_LOOKUP_METHOD          (ENGINE_CMD_BASE + 11)
 236 #define CAPI_CMD_STORE_NAME             (ENGINE_CMD_BASE + 12)
 237 #define CAPI_CMD_STORE_FLAGS            (ENGINE_CMD_BASE + 13)
 238
 239 static const ENGINE_CMD_DEFN capi_cmd_defns[] = {
 240         {CAPI_CMD_LIST_CERTS,
 241                 "list_certs",
 242                 "List all certificates in store",
 243                 ENGINE_CMD_FLAG_NO_INPUT},
 244         {CAPI_CMD_LOOKUP_CERT,
 245                 "lookup_cert",
 246                 "Lookup and output certificates",
 247                 ENGINE_CMD_FLAG_STRING},
 248         {CAPI_CMD_DEBUG_LEVEL,
 249                 "debug_level",
 250                 "debug level (1=errors, 2=trace)",
 251                 ENGINE_CMD_FLAG_NUMERIC},
 252         {CAPI_CMD_DEBUG_FILE,
 253                 "debug_file",
 254                 "debugging filename)",
 255                 ENGINE_CMD_FLAG_STRING},
 256         {CAPI_CMD_KEYTYPE,
 257                 "key_type",
 258                 "Key type: 1=AT_KEYEXCHANGE (default), 2=AT_SIGNATURE",
 259                 ENGINE_CMD_FLAG_NUMERIC},
 260         {CAPI_CMD_LIST_CSPS,
 261                 "list_csps",
 262                 "List all CSPs",
 263                 ENGINE_CMD_FLAG_NO_INPUT},
 264         {CAPI_CMD_SET_CSP_IDX,
 265                 "csp_idx",
 266                 "Set CSP by index",
 267                 ENGINE_CMD_FLAG_NUMERIC},
 268         {CAPI_CMD_SET_CSP_NAME,
 269                 "csp_name",
 270                 "Set CSP name, (default CSP used if not specified)",
 271                 ENGINE_CMD_FLAG_STRING},
 272         {CAPI_CMD_SET_CSP_TYPE,
 273                 "csp_type",
 274                 "Set CSP type, (default RSA_PROV_FULL)",
 275                 ENGINE_CMD_FLAG_NUMERIC},
 276         {CAPI_CMD_LIST_CONTAINERS,
 277                 "list_containers",
 278                 "list container names",
 279                 ENGINE_CMD_FLAG_NO_INPUT},
 280         {CAPI_CMD_LIST_OPTIONS,
 281                 "list_options",
 282                 "Set list options (1=summary,2=friendly name, 4=full printout, 8=PEM output, 16=XXX, "
 283                 "32=private key info)",
 284                 ENGINE_CMD_FLAG_NUMERIC},
 285         {CAPI_CMD_LOOKUP_METHOD,
 286                 "lookup_method",
 287                 "Set key lookup method (1=substring, 2=friendlyname, 3=container name)",
 288                 ENGINE_CMD_FLAG_NUMERIC},
 289         {CAPI_CMD_STORE_NAME,
 290                 "store_name",
 291                 "certificate store name, default \"MY\"",
 292                 ENGINE_CMD_FLAG_STRING},
 293         {CAPI_CMD_STORE_FLAGS,
 294                 "store_flags",
 295                 "Certificate store flags: 1 = system store",
 296                 ENGINE_CMD_FLAG_NUMERIC},
 297
 298         {0, NULL, NULL, 0}
 299         };
 300
 301 static int capi_idx = -1;
 302 static int rsa_capi_idx = -1;
 303 static int dsa_capi_idx = -1;
 304 static int cert_capi_idx = -1;
 305
 306 static int capi_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
 307         {
 308         int ret = 1;
 309         CAPI_CTX *ctx;
 310         BIO *out;
 311         if (capi_idx == -1)
 312                 {
 313                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_ENGINE_NOT_INITIALIZED);
 314                 return 0;
 315                 }
 316         ctx = ENGINE_get_ex_data(e, capi_idx);
 317         out = BIO_new_fp(stdout, BIO_NOCLOSE);
 318         switch (cmd)
 319                 {
 320                 case CAPI_CMD_LIST_CSPS:
 321                 ret = capi_list_providers(ctx, out);
 322                 break;
 323
 324                 case CAPI_CMD_LIST_CERTS:
 325                 ret = capi_list_certs(ctx, out, NULL);
 326                 break;
 327
 328                 case CAPI_CMD_LOOKUP_CERT:
 329                 ret = capi_list_certs(ctx, out, p);
 330                 break;
 331
 332                 case CAPI_CMD_LIST_CONTAINERS:
 333                 ret = capi_list_containers(ctx, out);
 334                 break;
 335
 336                 case CAPI_CMD_STORE_NAME:
 337                 if (ctx->storename)
 338                         OPENSSL_free(ctx->storename);
 339                 ctx->storename = BUF_strdup(p);
 340                 CAPI_trace(ctx, "Setting store name to %s\n", p);
 341                 break;
 342
 343                 case CAPI_CMD_STORE_FLAGS:
 344                 if (i & 1)
 345                         {
 346                         ctx->store_flags |= CERT_SYSTEM_STORE_LOCAL_MACHINE;
 347                         ctx->store_flags &= ~CERT_SYSTEM_STORE_CURRENT_USER;
 348                         }
 349                 else
 350                         {
 351                         ctx->store_flags |= CERT_SYSTEM_STORE_CURRENT_USER;
 352                         ctx->store_flags &= ~CERT_SYSTEM_STORE_LOCAL_MACHINE;
 353                         }
 354                 CAPI_trace(ctx, "Setting flags to %d\n", i);
 355                 break;
 356
 357                 case CAPI_CMD_DEBUG_LEVEL:
 358                 ctx->debug_level = (int)i;
 359                 CAPI_trace(ctx, "Setting debug level to %d\n", ctx->debug_level);
 360                 break;
 361
 362                 case CAPI_CMD_DEBUG_FILE:
 363                 ctx->debug_file = BUF_strdup(p);
 364                 CAPI_trace(ctx, "Setting debug file to %s\n", ctx->debug_file);
 365                 break;
 366
 367                 case CAPI_CMD_KEYTYPE:
 368                 ctx->keytype = i;
 369                 CAPI_trace(ctx, "Setting key type to %d\n", ctx->keytype);
 370                 break;
 371
 372                 case CAPI_CMD_SET_CSP_IDX:
 373                 ret = capi_ctx_set_provname_idx(ctx, i);
 374                 break;
 375
 376                 case CAPI_CMD_LIST_OPTIONS:
 377                 ctx->dump_flags = i;
 378                 break;
 379
 380                 case CAPI_CMD_LOOKUP_METHOD:
 381                 if (i < 1 || i > 3)
 382                         {
 383                         CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_INVALID_LOOKUP_METHOD);
 384                         return 0;
 385                         }
 386                 ctx->lookup_method = i;
 387                 break;
 388
 389                 case CAPI_CMD_SET_CSP_NAME:
 390                 ret = capi_ctx_set_provname(ctx, p, ctx->csptype, 1);
 391                 break;
 392
 393                 case CAPI_CMD_SET_CSP_TYPE:
 394                 ctx->csptype = i;
 395                 break;
 396
 397                 default:
 398                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_UNKNOWN_COMMAND);
 399                 ret = 0;
 400         }
 401
 402         BIO_free(out);
 403         return ret;
 404
 405         }
 406
 407 static RSA_METHOD capi_rsa_method =
 408         {
 409         "CryptoAPI RSA method",
 410         0,                              /* pub_enc */
 411         0,                              /* pub_dec */
 412         capi_rsa_priv_enc,              /* priv_enc */
 413         capi_rsa_priv_dec,              /* priv_dec */
 414         0,                              /* rsa_mod_exp */
 415         0,                              /* bn_mod_exp */
 416         0,                              /* init */
 417         capi_rsa_free,                  /* finish */
 418         RSA_FLAG_SIGN_VER,              /* flags */
 419         NULL,                           /* app_data */
 420         capi_rsa_sign,                  /* rsa_sign */
 421         0                               /* rsa_verify */
 422         };
 423
 424 static DSA_METHOD capi_dsa_method =
 425         {
 426         "CryptoAPI DSA method",
 427         capi_dsa_do_sign,               /* dsa_do_sign */
 428         0,                              /* dsa_sign_setup */
 429         0,                              /* dsa_do_verify */
 430         0,                              /* dsa_mod_exp */
 431         0,                              /* bn_mod_exp */
 432         0,                              /* init */
 433         capi_dsa_free,                  /* finish */
 434         0,                              /* flags */
 435         NULL,                           /* app_data */
 436         0,                              /* dsa_paramgen */
 437         0                               /* dsa_keygen */
 438         };
 439
 440 static int capi_init(ENGINE *e)
 441         {
 442         CAPI_CTX *ctx;
 443         const RSA_METHOD *ossl_rsa_meth;
 444         const DSA_METHOD *ossl_dsa_meth;
 445
 446         if (capi_idx < 0)
 447                 {
 448                 capi_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, 0);
 449                 if (capi_idx < 0)
 450                         goto memerr;
 451
 452                 cert_capi_idx = X509_get_ex_new_index(0, NULL, NULL, NULL, 0);
 453
 454                 /* Setup RSA_METHOD */
 455                 rsa_capi_idx = RSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
 456                 ossl_rsa_meth = RSA_PKCS1_SSLeay();
 457                 capi_rsa_method.rsa_pub_enc = ossl_rsa_meth->rsa_pub_enc;
 458                 capi_rsa_method.rsa_pub_dec = ossl_rsa_meth->rsa_pub_dec;
 459                 capi_rsa_method.rsa_mod_exp = ossl_rsa_meth->rsa_mod_exp;
 460                 capi_rsa_method.bn_mod_exp = ossl_rsa_meth->bn_mod_exp;
 461
 462                 /* Setup DSA Method */
 463                 dsa_capi_idx = DSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
 464                 ossl_dsa_meth = DSA_OpenSSL();
 465                 capi_dsa_method.dsa_do_verify = ossl_dsa_meth->dsa_do_verify;
 466                 capi_dsa_method.dsa_mod_exp = ossl_dsa_meth->dsa_mod_exp;
 467                 capi_dsa_method.bn_mod_exp = ossl_dsa_meth->bn_mod_exp;
 468                 }
 469
 470         ctx = capi_ctx_new();
 471         if (!ctx)
 472                 goto memerr;
 473
 474         ENGINE_set_ex_data(e, capi_idx, ctx);
 475
 476 #ifdef OPENSSL_CAPIENG_DIALOG
 477         {
 478         HMODULE cryptui = LoadLibrary(TEXT("CRYPTUI.DLL"));
 479         HMODULE kernel = GetModuleHandle(TEXT("KERNEL32.DLL"));
 480         if (cryptui)
 481                 ctx->certselectdlg = (CERTDLG)GetProcAddress(cryptui, "CryptUIDlgSelectCertificateFromStore");
 482         if (kernel)
 483                 ctx->getconswindow = (GETCONSWIN)GetProcAddress(kernel, "GetConsoleWindow");
 484         if (cryptui && !OPENSSL_isservice())
 485                 ctx->client_cert_select = cert_select_dialog;
 486         }
 487 #endif
 488
 489
 490         return 1;
 491
 492         memerr:
 493         CAPIerr(CAPI_F_CAPI_INIT, ERR_R_MALLOC_FAILURE);
 494         return 0;
 495
 496         return 1;
 497         }
 498
 499 static int capi_destroy(ENGINE *e)
 500         {
 501         ERR_unload_CAPI_strings();
 502         return 1;
 503         }
 504
 505 static int capi_finish(ENGINE *e)
 506         {
 507         CAPI_CTX *ctx;
 508         ctx = ENGINE_get_ex_data(e, capi_idx);
 509         capi_ctx_free(ctx);
 510         ENGINE_set_ex_data(e, capi_idx, NULL);
 511         return 1;
 512         }
 513
 514
 515 /* CryptoAPI key application data. This contains
 516  * a handle to the private key container (for sign operations)
 517  * and a handle to the key (for decrypt operations).
 518  */
 519
 520 struct CAPI_KEY_st
 521         {
 522         /* Associated certificate context (if any) */
 523         PCCERT_CONTEXT pcert;
 524         HCRYPTPROV hprov;
 525         HCRYPTKEY key;
 526         DWORD keyspec;
 527         };
 528
 529 static int bind_capi(ENGINE *e)
 530         {
 531         if (!ENGINE_set_id(e, engine_capi_id)
 532                 || !ENGINE_set_name(e, engine_capi_name)
 533                 || !ENGINE_set_flags(e, ENGINE_FLAGS_NO_REGISTER_ALL)
 534                 || !ENGINE_set_init_function(e, capi_init)
 535                 || !ENGINE_set_finish_function(e, capi_finish)
 536                 || !ENGINE_set_destroy_function(e, capi_destroy)
 537                 || !ENGINE_set_RSA(e, &capi_rsa_method)
 538                 || !ENGINE_set_DSA(e, &capi_dsa_method)
 539                 || !ENGINE_set_load_privkey_function(e, capi_load_privkey)
 540                 || !ENGINE_set_load_ssl_client_cert_function(e,
 541                                                 capi_load_ssl_client_cert)
 542                 || !ENGINE_set_cmd_defns(e, capi_cmd_defns)
 543                 || !ENGINE_set_ctrl_function(e, capi_ctrl))
 544                         return 0;
 545         ERR_load_CAPI_strings();
 546
 547         return 1;
 548
 549         }
 550
 551 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
 552 static int bind_helper(ENGINE *e, const char *id)
 553         {
 554         if(id && (strcmp(id, engine_capi_id) != 0))
 555                 return 0;
 556         if(!bind_capi(e))
 557                 return 0;
 558         return 1;
 559         }
 560 IMPLEMENT_DYNAMIC_CHECK_FN()
 561 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
 562 #else
 563 static ENGINE *engine_capi(void)
 564         {
 565         ENGINE *ret = ENGINE_new();
 566         if(!ret)
 567                 return NULL;
 568         if(!bind_capi(ret))
 569                 {
 570                 ENGINE_free(ret);
 571                 return NULL;
 572                 }
 573         return ret;
 574         }
 575
 576 void ENGINE_load_capi(void)
 577         {
 578         /* Copied from eng_[openssl|dyn].c */
 579         ENGINE *toadd = engine_capi();
 580         if(!toadd) return;
 581         ENGINE_add(toadd);
 582         ENGINE_free(toadd);
 583         ERR_clear_error();
 584         }
 585 #endif
 586
 587
 588 static int lend_tobn(BIGNUM *bn, unsigned char *bin, int binlen)
 589         {
 590         int i;
 591         /* Reverse buffer in place: since this is a keyblob structure
 592          * that will be freed up after conversion anyway it doesn't
 593          * matter if we change it.
 594          */
 595         for(i = 0; i < binlen / 2; i++)
 596                 {
 597                 unsigned char c;
 598                 c = bin[i];
 599                 bin[i] = bin[binlen - i - 1];
 600                 bin[binlen - i - 1] = c;
 601                 }
 602
 603         if (!BN_bin2bn(bin, binlen, bn))
 604                 return 0;
 605         return 1;
 606         }
 607
 608 /* Given a CAPI_KEY get an EVP_PKEY structure */
 609
 610 static EVP_PKEY *capi_get_pkey(ENGINE *eng, CAPI_KEY *key)
 611         {
 612         unsigned char *pubkey = NULL;
 613         DWORD len;
 614         BLOBHEADER *bh;
 615         RSA *rkey = NULL;
 616         DSA *dkey = NULL;
 617         EVP_PKEY *ret = NULL;
 618         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, NULL, &len))
 619                 {
 620                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_LENGTH_ERROR);
 621                 capi_addlasterror();
 622                 return NULL;
 623                 }
 624
 625         pubkey = OPENSSL_malloc(len);
 626
 627         if (!pubkey)
 628                 goto memerr;
 629
 630         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, pubkey, &len))
 631                 {
 632                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_ERROR);
 633                 capi_addlasterror();
 634                 goto err;
 635                 }
 636
 637         bh = (BLOBHEADER *)pubkey;
 638         if (bh->bType != PUBLICKEYBLOB)
 639                 {
 640                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_PUBLIC_KEY_BLOB);
 641                 goto err;
 642                 }
 643         if (bh->aiKeyAlg == CALG_RSA_SIGN || bh->aiKeyAlg == CALG_RSA_KEYX)
 644                 {
 645                 RSAPUBKEY *rp;
 646                 DWORD rsa_modlen;
 647                 unsigned char *rsa_modulus;
 648                 rp = (RSAPUBKEY *)(bh + 1);
 649                 if (rp->magic != 0x31415352)
 650                         {
 651                         char magstr[10];
 652                         BIO_snprintf(magstr, 10, "%lx", rp->magic);
 653                         CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_RSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
 654                         ERR_add_error_data(2, "magic=0x", magstr);
 655                         goto err;
 656                         }
 657                 rsa_modulus = (unsigned char *)(rp + 1);
 658                 rkey = RSA_new_method(eng);
 659                 if (!rkey)
 660                         goto memerr;
 661
 662                 rkey->e = BN_new();
 663                 rkey->n = BN_new();
 664
 665                 if (!rkey->e || !rkey->n)
 666                         goto memerr;
 667
 668                 if (!BN_set_word(rkey->e, rp->pubexp))
 669                         goto memerr;
 670
 671                 rsa_modlen = rp->bitlen / 8;
 672                 if (!lend_tobn(rkey->n, rsa_modulus, rsa_modlen))
 673                         goto memerr;
 674
 675                 RSA_set_ex_data(rkey, rsa_capi_idx, key);
 676
 677                 if (!(ret = EVP_PKEY_new()))
 678                         goto memerr;
 679
 680                 EVP_PKEY_assign_RSA(ret, rkey);
 681                 rkey = NULL;
 682
 683                 }
 684         else if (bh->aiKeyAlg == CALG_DSS_SIGN)
 685                 {
 686                 DSSPUBKEY *dp;
 687                 DWORD dsa_plen;
 688                 unsigned char *btmp;
 689                 dp = (DSSPUBKEY *)(bh + 1);
 690                 if (dp->magic != 0x31535344)
 691                         {
 692                         char magstr[10];
 693                         BIO_snprintf(magstr, 10, "%lx", dp->magic);
 694                         CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_DSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
 695                         ERR_add_error_data(2, "magic=0x", magstr);
 696                         goto err;
 697                         }
 698                 dsa_plen = dp->bitlen / 8;
 699                 btmp = (unsigned char *)(dp + 1);
 700                 dkey = DSA_new_method(eng);
 701                 if (!dkey)
 702                         goto memerr;
 703                 dkey->p = BN_new();
 704                 dkey->q = BN_new();
 705                 dkey->g = BN_new();
 706                 dkey->pub_key = BN_new();
 707                 if (!dkey->p || !dkey->q || !dkey->g || !dkey->pub_key)
 708                         goto memerr;
 709                 if (!lend_tobn(dkey->p, btmp, dsa_plen))
 710                         goto memerr;
 711                 btmp += dsa_plen;
 712                 if (!lend_tobn(dkey->q, btmp, 20))
 713                         goto memerr;
 714                 btmp += 20;
 715                 if (!lend_tobn(dkey->g, btmp, dsa_plen))
 716                         goto memerr;
 717                 btmp += dsa_plen;
 718                 if (!lend_tobn(dkey->pub_key, btmp, dsa_plen))
 719                         goto memerr;
 720                 btmp += dsa_plen;
 721
 722                 DSA_set_ex_data(dkey, dsa_capi_idx, key);
 723
 724                 if (!(ret = EVP_PKEY_new()))
 725                         goto memerr;
 726
 727                 EVP_PKEY_assign_DSA(ret, dkey);
 728                 dkey = NULL;
 729                 }
 730         else
 731                 {
 732                 char algstr[10];
 733                 BIO_snprintf(algstr, 10, "%lx", bh->aiKeyAlg);
 734                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_UNSUPPORTED_PUBLIC_KEY_ALGORITHM);
 735                 ERR_add_error_data(2, "aiKeyAlg=0x", algstr);
 736                 goto err;
 737                 }
 738
 739
 740         err:
 741         if (pubkey)
 742                 OPENSSL_free(pubkey);
 743         if (!ret)
 744                 {
 745                 if (rkey)
 746                         RSA_free(rkey);
 747                 if (dkey)
 748                         DSA_free(dkey);
 749                 }
 750
 751         return ret;
 752
 753 memerr:
 754         CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_MALLOC_FAILURE);
 755         goto err;
 756
 757         }
 758
 759 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
 760         UI_METHOD *ui_method, void *callback_data)
 761         {
 762         CAPI_CTX *ctx;
 763         CAPI_KEY *key;
 764         EVP_PKEY *ret;
 765         ctx = ENGINE_get_ex_data(eng, capi_idx);
 766
 767         if (!ctx)
 768                 {
 769                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_CANT_FIND_CAPI_CONTEXT);
 770                 return NULL;
 771                 }
 772
 773         key = capi_find_key(ctx, key_id);
 774
 775         if (!key)
 776                 return NULL;
 777
 778         ret = capi_get_pkey(eng, key);
 779
 780         if (!ret)
 781                 capi_free_key(key);
 782         return ret;
 783
 784         }
 785
 786 /* CryptoAPI RSA operations */
 787
 788 int capi_rsa_priv_enc(int flen, const unsigned char *from,
 789                 unsigned char *to, RSA *rsa, int padding)
 790         {
 791         CAPIerr(CAPI_F_CAPI_RSA_PRIV_ENC, CAPI_R_FUNCTION_NOT_SUPPORTED);
 792         return -1;
 793         }
 794
 795 int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 796              unsigned char *sigret, unsigned int *siglen, const RSA *rsa)
 797         {
 798         ALG_ID alg;
 799         HCRYPTHASH hash;
 800         DWORD slen;
 801         unsigned int i;
 802         int ret = -1;
 803         CAPI_KEY *capi_key;
 804         CAPI_CTX *ctx;
 805
 806         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 807
 808         CAPI_trace(ctx, "Called CAPI_rsa_sign()\n");
 809
 810         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 811         if (!capi_key)
 812                 {
 813                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_GET_KEY);
 814                 return -1;
 815                 }
 816 /* Convert the signature type to a CryptoAPI algorithm ID */
 817         switch(dtype)
 818                 {
 819         case NID_sha1:
 820                 alg = CALG_SHA1;
 821                 break;
 822
 823         case NID_md5:
 824                 alg = CALG_MD5;
 825                 break;
 826
 827         case NID_md5_sha1:
 828                 alg = CALG_SSL3_SHAMD5;
 829                 break;
 830         default:
 831                 {
 832                 char algstr[10];
 833                 BIO_snprintf(algstr, 10, "%lx", dtype);
 834                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_UNSUPPORTED_ALGORITHM_NID);
 835                 ERR_add_error_data(2, "NID=0x", algstr);
 836                 return -1;
 837                 }
 838         }
 839
 840
 841
 842 /* Create the hash object */
 843         if(!CryptCreateHash(capi_key->hprov, alg, 0, 0, &hash))
 844                 {
 845                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
 846                 capi_addlasterror();
 847                 return -1;
 848                 }
 849 /* Set the hash value to the value passed */
 850
 851         if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)m, 0))
 852                 {
 853                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
 854                 capi_addlasterror();
 855                 goto err;
 856                 }
 857
 858
 859 /* Finally sign it */
 860         slen = RSA_size(rsa);
 861         if(!CryptSignHashA(hash, capi_key->keyspec, NULL, 0, sigret, &slen))
 862                 {
 863                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_ERROR_SIGNING_HASH);
 864                 capi_addlasterror();
 865                 goto err;
 866                 }
 867         else
 868                 {
 869                 ret = 1;
 870                 /* Inplace byte reversal of signature */
 871                 for(i = 0; i < slen / 2; i++)
 872                         {
 873                         unsigned char c;
 874                         c = sigret[i];
 875                         sigret[i] = sigret[slen - i - 1];
 876                         sigret[slen - i - 1] = c;
 877                         }
 878                 *siglen = slen;
 879                 }
 880
 881         /* Now cleanup */
 882
 883 err:
 884         CryptDestroyHash(hash);
 885
 886         return ret;
 887         }
 888
 889 int capi_rsa_priv_dec(int flen, const unsigned char *from,
 890                 unsigned char *to, RSA *rsa, int padding)
 891         {
 892         int i;
 893         unsigned char *tmpbuf;
 894         CAPI_KEY *capi_key;
 895         CAPI_CTX *ctx;
 896         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 897
 898         CAPI_trace(ctx, "Called capi_rsa_priv_dec()\n");
 899
 900
 901         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 902         if (!capi_key)
 903                 {
 904                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_CANT_GET_KEY);
 905                 return -1;
 906                 }
 907
 908         if(padding != RSA_PKCS1_PADDING)
 909                 {
 910                 char errstr[10];
 911                 BIO_snprintf(errstr, 10, "%d", padding);
 912                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_UNSUPPORTED_PADDING);
 913                 ERR_add_error_data(2, "padding=", errstr);
 914                 return -1;
 915                 }
 916
 917         /* Create temp reverse order version of input */
 918         if(!(tmpbuf = OPENSSL_malloc(flen)) )
 919                 {
 920                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, ERR_R_MALLOC_FAILURE);
 921                 return -1;
 922                 }
 923         for(i = 0; i < flen; i++)
 924                 tmpbuf[flen - i - 1] = from[i];
 925
 926         /* Finally decrypt it */
 927         if(!CryptDecrypt(capi_key->key, 0, TRUE, 0, tmpbuf, &flen))
 928                 {
 929                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_DECRYPT_ERROR);
 930                 capi_addlasterror();
 931                 OPENSSL_free(tmpbuf);
 932                 return -1;
 933                 }
 934         else memcpy(to, tmpbuf, flen);
 935
 936         OPENSSL_free(tmpbuf);
 937
 938         return flen;
 939         }
 940
 941 static int capi_rsa_free(RSA *rsa)
 942         {
 943         CAPI_KEY *capi_key;
 944         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 945         capi_free_key(capi_key);
 946         RSA_set_ex_data(rsa, rsa_capi_idx, 0);
 947         return 1;
 948         }
 949
 950 /* CryptoAPI DSA operations */
 951
 952 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
 953                                                                 DSA *dsa)
 954         {
 955         HCRYPTHASH hash;
 956         DWORD slen;
 957         DSA_SIG *ret = NULL;
 958         CAPI_KEY *capi_key;
 959         CAPI_CTX *ctx;
 960         unsigned char csigbuf[40];
 961
 962         ctx = ENGINE_get_ex_data(dsa->engine, capi_idx);
 963
 964         CAPI_trace(ctx, "Called CAPI_dsa_do_sign()\n");
 965
 966         capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
 967
 968         if (!capi_key)
 969                 {
 970                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_GET_KEY);
 971                 return NULL;
 972                 }
 973
 974         if (dlen != 20)
 975                 {
 976                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_INVALID_DIGEST_LENGTH);
 977                 return NULL;
 978                 }
 979
 980         /* Create the hash object */
 981         if(!CryptCreateHash(capi_key->hprov, CALG_SHA1, 0, 0, &hash))
 982                 {
 983                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
 984                 capi_addlasterror();
 985                 return NULL;
 986                 }
 987
 988         /* Set the hash value to the value passed */
 989         if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)digest, 0))
 990                 {
 991                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
 992                 capi_addlasterror();
 993                 goto err;
 994                 }
 995
 996
 997         /* Finally sign it */
 998         slen = sizeof(csigbuf);
 999         if(!CryptSignHashA(hash, capi_key->keyspec, NULL, 0, csigbuf, &slen))
1000                 {
1001                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_ERROR_SIGNING_HASH);
1002                 capi_addlasterror();
1003                 goto err;
1004                 }
1005         else
1006                 {
1007                 ret = DSA_SIG_new();
1008                 if (!ret)
1009                         goto err;
1010                 ret->r = BN_new();
1011                 ret->s = BN_new();
1012                 if (!ret->r || !ret->s)
1013                         goto err;
1014                 if (!lend_tobn(ret->r, csigbuf, 20)
1015                         || !lend_tobn(ret->s, csigbuf + 20, 20))
1016                         {
1017                         DSA_SIG_free(ret);
1018                         ret = NULL;
1019                         goto err;
1020                         }
1021                 }
1022
1023         /* Now cleanup */
1024
1025 err:
1026         OPENSSL_cleanse(csigbuf, 40);
1027         CryptDestroyHash(hash);
1028         return ret;
1029         }
1030
1031 static int capi_dsa_free(DSA *dsa)
1032         {
1033         CAPI_KEY *capi_key;
1034         capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
1035         capi_free_key(capi_key);
1036         DSA_set_ex_data(dsa, dsa_capi_idx, 0);
1037         return 1;
1038         }
1039
1040 static void capi_vtrace(CAPI_CTX *ctx, int level, char *format, va_list argptr)
1041         {
1042         BIO *out;
1043
1044         if (!ctx || (ctx->debug_level < level) || (!ctx->debug_file))
1045                 return;
1046         out = BIO_new_file(ctx->debug_file, "a+");
1047         BIO_vprintf(out, format, argptr);
1048         BIO_free(out);
1049         }
1050
1051 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...)
1052         {
1053         va_list args;
1054         va_start(args, format);
1055         capi_vtrace(ctx, CAPI_DBG_TRACE, format, args);
1056         va_end(args);
1057         }
1058
1059 static void capi_addlasterror(void)
1060         {
1061         capi_adderror(GetLastError());
1062         }
1063
1064 static void capi_adderror(DWORD err)
1065         {
1066         char errstr[10];
1067         BIO_snprintf(errstr, 10, "%lX", err);
1068         ERR_add_error_data(2, "Error code= 0x", errstr);
1069         }
1070
1071 static char *wide_to_asc(LPWSTR wstr)
1072         {
1073         char *str;
1074         int len_0,sz;
1075
1076         if (!wstr)
1077                 return NULL;
1078         len_0 = (int)wcslen(wstr)+1;    /* WideCharToMultiByte expects int */
1079         sz = WideCharToMultiByte(CP_ACP,0,wstr,len_0,NULL,0,NULL,NULL);
1080         if (!sz)
1081                 {
1082                 CAPIerr(CAPI_F_WIDE_TO_ASC, CAPI_R_WIN32_ERROR);
1083                 return NULL;
1084                 }
1085         str = OPENSSL_malloc(sz);
1086         if (!str)
1087                 {
1088                 CAPIerr(CAPI_F_WIDE_TO_ASC, ERR_R_MALLOC_FAILURE);
1089                 return NULL;
1090                 }
1091         if (!WideCharToMultiByte(CP_ACP,0,wstr,len_0,str,sz,NULL,NULL))
1092                 {
1093                 OPENSSL_free(str);
1094                 CAPIerr(CAPI_F_WIDE_TO_ASC, CAPI_R_WIN32_ERROR);
1095                 return NULL;
1096                 }
1097         return str;
1098         }
1099
1100 static int capi_get_provname(CAPI_CTX *ctx, LPSTR *pname, DWORD *ptype, DWORD idx)
1101         {
1102         LPSTR name;
1103         DWORD len, err;
1104         CAPI_trace(ctx, "capi_get_provname, index=%d\n", idx);
1105         if (!CryptEnumProvidersA(idx, NULL, 0, ptype, NULL, &len))
1106                 {
1107                 err = GetLastError();
1108                 if (err == ERROR_NO_MORE_ITEMS)
1109                         return 2;
1110                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1111                 capi_adderror(err);
1112                 return 0;
1113                 }
1114         name = OPENSSL_malloc(len);
1115         if (!CryptEnumProvidersA(idx, NULL, 0, ptype, name, &len))
1116                 {
1117                 err = GetLastError();
1118                 if (err == ERROR_NO_MORE_ITEMS)
1119                         return 2;
1120                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1121                 capi_adderror(err);
1122                 return 0;
1123                 }
1124         *pname = name;
1125         CAPI_trace(ctx, "capi_get_provname, returned name=%s, type=%d\n", name, *ptype);
1126
1127         return 1;
1128         }
1129
1130 static int capi_list_providers(CAPI_CTX *ctx, BIO *out)
1131         {
1132         DWORD idx, ptype;
1133         int ret;
1134         LPSTR provname = NULL;
1135         CAPI_trace(ctx, "capi_list_providers\n");
1136         BIO_printf(out, "Available CSPs:\n");
1137         for(idx = 0; ; idx++)
1138                 {
1139                 ret = capi_get_provname(ctx, &provname, &ptype, idx);
1140                 if (ret == 2)
1141                         break;
1142                 if (ret == 0)
1143                         break;
1144                 BIO_printf(out, "%d. %s, type %d\n", idx, provname, ptype);
1145                 OPENSSL_free(provname);
1146                 }
1147         return 1;
1148         }
1149
1150 static int capi_list_containers(CAPI_CTX *ctx, BIO *out)
1151         {
1152         int ret = 1;
1153         HCRYPTPROV hprov;
1154         DWORD err, idx, flags, buflen = 0, clen;
1155         LPSTR cname;
1156         CAPI_trace(ctx, "Listing containers CSP=%s, type = %d\n", ctx->cspname, ctx->csptype);
1157         if (!CryptAcquireContextA(&hprov, NULL, ctx->cspname, ctx->csptype, CRYPT_VERIFYCONTEXT))
1158                 {
1159                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1160                 capi_addlasterror();
1161                 return 0;
1162                 }
1163         if (!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, NULL, &buflen, CRYPT_FIRST))
1164                 {
1165                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1166                 capi_addlasterror();
1167                 CryptReleaseContext(hprov, 0);
1168                 return 0;
1169                 }
1170         CAPI_trace(ctx, "Got max container len %d\n", buflen);
1171         if (buflen == 0)
1172                 buflen = 1024;
1173         cname = OPENSSL_malloc(buflen);
1174         if (!cname)
1175                 {
1176                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, ERR_R_MALLOC_FAILURE);
1177                 goto err;
1178                 }
1179
1180         for (idx = 0;;idx++)
1181                 {
1182                 clen = buflen;
1183                 cname[0] = 0;
1184
1185                 if (idx == 0)
1186                         flags = CRYPT_FIRST;
1187                 else
1188                         flags = 0;
1189                 if(!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, cname, &clen, flags))
1190                         {
1191                         err = GetLastError();
1192                         if (err == ERROR_NO_MORE_ITEMS)
1193                                 goto done;
1194                         CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1195                         capi_adderror(err);
1196                         goto err;
1197                         }
1198                 CAPI_trace(ctx, "Container name %s, len=%d, index=%d, flags=%d\n", cname, clen, idx, flags);
1199                 if (!cname[0] && (clen == buflen))
1200                         {
1201                         CAPI_trace(ctx, "Enumerate bug: using workaround\n");
1202                         goto done;
1203                         }
1204                 BIO_printf(out, "%d. %s\n", idx, cname);
1205                 }
1206         err:
1207
1208         ret = 0;
1209
1210         done:
1211         if (cname)
1212                 OPENSSL_free(cname);
1213         CryptReleaseContext(hprov, 0);
1214
1215         return ret;
1216         }
1217
1218 CRYPT_KEY_PROV_INFO *capi_get_prov_info(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1219         {
1220         DWORD len;
1221         CRYPT_KEY_PROV_INFO *pinfo;
1222
1223         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, NULL, &len))
1224                 return NULL;
1225         pinfo = OPENSSL_malloc(len);
1226         if (!pinfo)
1227                 {
1228                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, ERR_R_MALLOC_FAILURE);
1229                 return NULL;
1230                 }
1231         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, pinfo, &len))
1232                 {
1233                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, CAPI_R_ERROR_GETTING_KEY_PROVIDER_INFO);
1234                 capi_addlasterror();
1235                 OPENSSL_free(pinfo);
1236                 return NULL;
1237                 }
1238         return pinfo;
1239         }
1240
1241 static void capi_dump_prov_info(CAPI_CTX *ctx, BIO *out, CRYPT_KEY_PROV_INFO *pinfo)
1242         {
1243         char *provname = NULL, *contname = NULL;
1244         if (!pinfo)
1245                 {
1246                 BIO_printf(out, "  No Private Key\n");
1247                 return;
1248                 }
1249         provname = wide_to_asc(pinfo->pwszProvName);
1250         contname = wide_to_asc(pinfo->pwszContainerName);
1251         if (!provname || !contname)
1252                 goto err;
1253
1254         BIO_printf(out, "  Private Key Info:\n");
1255         BIO_printf(out, "    Provider Name:  %s, Provider Type %d\n", provname, pinfo->dwProvType);
1256         BIO_printf(out, "    Container Name: %s, Key Type %d\n", contname, pinfo->dwKeySpec);
1257         err:
1258         if (provname)
1259                 OPENSSL_free(provname);
1260         if (contname)
1261                 OPENSSL_free(contname);
1262         }
1263
1264 char * capi_cert_get_fname(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1265         {
1266         LPWSTR wfname;
1267         DWORD dlen;
1268
1269         CAPI_trace(ctx, "capi_cert_get_fname\n");
1270         if (!CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, NULL, &dlen))
1271                 return NULL;
1272         wfname = OPENSSL_malloc(dlen);
1273         if (CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, wfname, &dlen))
1274                 {
1275                 char *fname = wide_to_asc(wfname);
1276                 OPENSSL_free(wfname);
1277                 return fname;
1278                 }
1279         CAPIerr(CAPI_F_CAPI_CERT_GET_FNAME, CAPI_R_ERROR_GETTING_FRIENDLY_NAME);
1280         capi_addlasterror();
1281
1282         OPENSSL_free(wfname);
1283         return NULL;
1284         }
1285
1286
1287 void capi_dump_cert(CAPI_CTX *ctx, BIO *out, PCCERT_CONTEXT cert)
1288         {
1289         X509 *x;
1290         unsigned char *p;
1291         unsigned long flags = ctx->dump_flags;
1292         if (flags & CAPI_DMP_FNAME)
1293                 {
1294                 char *fname;
1295                 fname = capi_cert_get_fname(ctx, cert);
1296                 if (fname)
1297                         {
1298                         BIO_printf(out, "  Friendly Name \"%s\"\n", fname);
1299                         OPENSSL_free(fname);
1300                         }
1301                 else
1302                         BIO_printf(out, "  <No Friendly Name>\n");
1303                 }
1304
1305         p = cert->pbCertEncoded;
1306         x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1307         if (!x)
1308                 BIO_printf(out, "  <Can't parse certificate>\n");
1309         if (flags & CAPI_DMP_SUMMARY)
1310                 {
1311                 BIO_printf(out, "  Subject: ");
1312                 X509_NAME_print_ex(out, X509_get_subject_name(x), 0, XN_FLAG_ONELINE);
1313                 BIO_printf(out, "\n  Issuer: ");
1314                 X509_NAME_print_ex(out, X509_get_issuer_name(x), 0, XN_FLAG_ONELINE);
1315                 BIO_printf(out, "\n");
1316                 }
1317         if (flags & CAPI_DMP_FULL)
1318                 X509_print_ex(out, x, XN_FLAG_ONELINE,0);
1319
1320         if (flags & CAPI_DMP_PKEYINFO)
1321                 {
1322                 CRYPT_KEY_PROV_INFO *pinfo;
1323                 pinfo = capi_get_prov_info(ctx, cert);
1324                 capi_dump_prov_info(ctx, out, pinfo);
1325                 if (pinfo)
1326                         OPENSSL_free(pinfo);
1327                 }
1328
1329         if (flags & CAPI_DMP_PEM)
1330                 PEM_write_bio_X509(out, x);
1331         X509_free(x);
1332         }
1333
1334 HCERTSTORE capi_open_store(CAPI_CTX *ctx, char *storename)
1335         {
1336         HCERTSTORE hstore;
1337
1338         if (!storename)
1339                 storename = ctx->storename;
1340         if (!storename)
1341                 storename = "MY";
1342         CAPI_trace(ctx, "Opening certificate store %s\n", storename);
1343
1344         hstore = CertOpenStore(CERT_STORE_PROV_SYSTEM_A, 0, 0,
1345                                 ctx->store_flags, storename);
1346         if (!hstore)
1347                 {
1348                 CAPIerr(CAPI_F_CAPI_OPEN_STORE, CAPI_R_ERROR_OPENING_STORE);
1349                 capi_addlasterror();
1350                 }
1351         return hstore;
1352         }
1353
1354 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *id)
1355         {
1356         char *storename;
1357         int idx;
1358         int ret = 1;
1359         HCERTSTORE hstore;
1360         PCCERT_CONTEXT cert = NULL;
1361
1362         storename = ctx->storename;
1363         if (!storename)
1364                 storename = "MY";
1365         CAPI_trace(ctx, "Listing certs for store %s\n", storename);
1366
1367         hstore = capi_open_store(ctx, storename);
1368         if (!hstore)
1369                 return 0;
1370         if (id)
1371                 {
1372                 cert = capi_find_cert(ctx, id, hstore);
1373                 if (!cert)
1374                         {
1375                         ret = 0;
1376                         goto err;
1377                         }
1378                 capi_dump_cert(ctx, out, cert);
1379                 CertFreeCertificateContext(cert);
1380                 }
1381         else
1382                 {
1383                 for(idx = 0;;idx++)
1384                         {
1385                         LPWSTR fname = NULL;
1386                         cert = CertEnumCertificatesInStore(hstore, cert);
1387                         if (!cert)
1388                                 break;
1389                         BIO_printf(out, "Certificate %d\n", idx);
1390                         capi_dump_cert(ctx, out, cert);
1391                         }
1392                 }
1393         err:
1394         CertCloseStore(hstore, 0);
1395         return ret;
1396         }
1397
1398 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore)
1399         {
1400         PCCERT_CONTEXT cert = NULL;
1401         char *fname = NULL;
1402         int match;
1403         switch(ctx->lookup_method)
1404                 {
1405                 case CAPI_LU_SUBSTR:
1406                         return CertFindCertificateInStore(hstore,
1407                                         X509_ASN_ENCODING, 0,
1408                                         CERT_FIND_SUBJECT_STR_A, id, NULL);
1409                 case CAPI_LU_FNAME:
1410                         for(;;)
1411                                 {
1412                                 cert = CertEnumCertificatesInStore(hstore, cert);
1413                                 if (!cert)
1414                                         return NULL;
1415                                 fname = capi_cert_get_fname(ctx, cert);
1416                                 if (fname)
1417                                         {
1418                                         if (strcmp(fname, id))
1419                                                 match = 0;
1420                                         else
1421                                                 match = 1;
1422                                         OPENSSL_free(fname);
1423                                         if (match)
1424                                                 return cert;
1425                                         }
1426                                 }
1427                 default:
1428                         return NULL;
1429                 }
1430         }
1431
1432 static CAPI_KEY *capi_get_key(CAPI_CTX *ctx, const char *contname, char *provname, DWORD ptype, DWORD keyspec)
1433         {
1434         CAPI_KEY *key;
1435     DWORD dwFlags = 0;
1436         key = OPENSSL_malloc(sizeof(CAPI_KEY));
1437         CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n",
1438                                                 contname, provname, ptype);
1439     if(ctx->store_flags & CERT_SYSTEM_STORE_LOCAL_MACHINE)
1440         dwFlags = CRYPT_MACHINE_KEYSET;
1441     if (!CryptAcquireContextA(&key->hprov, contname, provname, ptype, dwFlags))
1442                 {
1443                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1444                 capi_addlasterror();
1445                 goto err;
1446                 }
1447         if (!CryptGetUserKey(key->hprov, keyspec, &key->key))
1448                 {
1449                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_GETUSERKEY_ERROR);
1450                 capi_addlasterror();
1451                 CryptReleaseContext(key->hprov, 0);
1452                 goto err;
1453                 }
1454         key->keyspec = keyspec;
1455         key->pcert = NULL;
1456         return key;
1457
1458         err:
1459         OPENSSL_free(key);
1460         return NULL;
1461         }
1462
1463 static CAPI_KEY *capi_get_cert_key(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1464         {
1465         CAPI_KEY *key = NULL;
1466         CRYPT_KEY_PROV_INFO *pinfo = NULL;
1467         char *provname = NULL, *contname = NULL;
1468         pinfo = capi_get_prov_info(ctx, cert);
1469         if (!pinfo)
1470                 goto err;
1471         provname = wide_to_asc(pinfo->pwszProvName);
1472         contname = wide_to_asc(pinfo->pwszContainerName);
1473         if (!provname || !contname)
1474                 goto err;
1475         key = capi_get_key(ctx, contname, provname,
1476                                 pinfo->dwProvType, pinfo->dwKeySpec);
1477
1478         err:
1479         if (pinfo)
1480                 OPENSSL_free(pinfo);
1481         if (provname)
1482                 OPENSSL_free(provname);
1483         if (contname)
1484                 OPENSSL_free(contname);
1485         return key;
1486         }
1487
1488 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id)
1489         {
1490         PCCERT_CONTEXT cert;
1491         HCERTSTORE hstore;
1492         CAPI_KEY *key = NULL;
1493         switch (ctx->lookup_method)
1494                 {
1495                 case CAPI_LU_SUBSTR:
1496                 case CAPI_LU_FNAME:
1497                 hstore = capi_open_store(ctx, NULL);
1498                 if (!hstore)
1499                         return NULL;
1500                 cert = capi_find_cert(ctx, id, hstore);
1501                 if (cert)
1502                         {
1503                         key = capi_get_cert_key(ctx, cert);
1504                         CertFreeCertificateContext(cert);
1505                         }
1506                 CertCloseStore(hstore, 0);
1507                 break;
1508
1509                 case CAPI_LU_CONTNAME:
1510                 key = capi_get_key(ctx, id, ctx->cspname, ctx->csptype,
1511                                                         ctx->keytype);
1512                 break;
1513                 }
1514
1515         return key;
1516         }
1517
1518 void capi_free_key(CAPI_KEY *key)
1519         {
1520         if (!key)
1521                 return;
1522         CryptDestroyKey(key->key);
1523         CryptReleaseContext(key->hprov, 0);
1524         if (key->pcert)
1525                 CertFreeCertificateContext(key->pcert);
1526         OPENSSL_free(key);
1527         }
1528
1529
1530 /* Initialize a CAPI_CTX structure */
1531
1532 static CAPI_CTX *capi_ctx_new()
1533         {
1534         CAPI_CTX *ctx;
1535         ctx = OPENSSL_malloc(sizeof(CAPI_CTX));
1536         if (!ctx)
1537                 {
1538                 CAPIerr(CAPI_F_CAPI_CTX_NEW, ERR_R_MALLOC_FAILURE);
1539                 return NULL;
1540                 }
1541         ctx->cspname = NULL;
1542         ctx->csptype = PROV_RSA_FULL;
1543         ctx->dump_flags = CAPI_DMP_SUMMARY|CAPI_DMP_FNAME;
1544         ctx->keytype = AT_KEYEXCHANGE;
1545         ctx->storename = NULL;
1546         ctx->ssl_client_store = NULL;
1547         ctx->store_flags = CERT_STORE_OPEN_EXISTING_FLAG |
1548                                 CERT_STORE_READONLY_FLAG |
1549                                 CERT_SYSTEM_STORE_CURRENT_USER;
1550         ctx->lookup_method = CAPI_LU_SUBSTR;
1551         ctx->debug_level = 0;
1552         ctx->debug_file = NULL;
1553         ctx->client_cert_select = cert_select_simple;
1554         return ctx;
1555         }
1556
1557 static void capi_ctx_free(CAPI_CTX *ctx)
1558         {
1559         CAPI_trace(ctx, "Calling capi_ctx_free with %lx\n", ctx);
1560         if (!ctx)
1561                 return;
1562         if (ctx->cspname)
1563                 OPENSSL_free(ctx->cspname);
1564         if (ctx->debug_file)
1565                 OPENSSL_free(ctx->debug_file);
1566         if (ctx->storename)
1567                 OPENSSL_free(ctx->storename);
1568         if (ctx->ssl_client_store)
1569                 OPENSSL_free(ctx->ssl_client_store);
1570         OPENSSL_free(ctx);
1571         }
1572
1573 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check)
1574         {
1575         CAPI_trace(ctx, "capi_ctx_set_provname, name=%s, type=%d\n", pname, type);
1576         if (check)
1577                 {
1578                 HCRYPTPROV hprov;
1579                 if (!CryptAcquireContextA(&hprov, NULL, pname, type,
1580                                                 CRYPT_VERIFYCONTEXT))
1581                         {
1582                         CAPIerr(CAPI_F_CAPI_CTX_SET_PROVNAME, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1583                         capi_addlasterror();
1584                         return 0;
1585                         }
1586                 CryptReleaseContext(hprov, 0);
1587                 }
1588         if (ctx->cspname)
1589                 OPENSSL_free(ctx->cspname);
1590         ctx->cspname = BUF_strdup(pname);
1591         ctx->csptype = type;
1592         return 1;
1593         }
1594
1595 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx)
1596         {
1597         LPSTR pname;
1598         DWORD type;
1599         int res;
1600         if (capi_get_provname(ctx, &pname, &type, idx) != 1)
1601                 return 0;
1602         res = capi_ctx_set_provname(ctx, pname, type, 0);
1603         OPENSSL_free(pname);
1604         return res;
1605         }
1606
1607 static int cert_issuer_match(STACK_OF(X509_NAME) *ca_dn, X509 *x)
1608         {
1609         int i;
1610         X509_NAME *nm;
1611         /* Special case: empty list: match anything */
1612         if (sk_X509_NAME_num(ca_dn) <= 0)
1613                 return 1;
1614         for (i = 0; i < sk_X509_NAME_num(ca_dn); i++)
1615                 {
1616                 nm = sk_X509_NAME_value(ca_dn, i);
1617                 if (!X509_NAME_cmp(nm, X509_get_issuer_name(x)))
1618                                 return 1;
1619                 }
1620         return 0;
1621         }
1622
1623
1624
1625 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
1626         STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey,
1627         STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data)
1628         {
1629         STACK_OF(X509) *certs = NULL;
1630         X509 *x;
1631         char *storename;
1632         const char *p;
1633         int i, client_cert_idx;
1634         HCERTSTORE hstore;
1635         PCCERT_CONTEXT cert = NULL, excert = NULL;
1636         CAPI_CTX *ctx;
1637         CAPI_KEY *key;
1638         ctx = ENGINE_get_ex_data(e, capi_idx);
1639
1640         *pcert = NULL;
1641         *pkey = NULL;
1642
1643         storename = ctx->ssl_client_store;
1644         if (!storename)
1645                 storename = "MY";
1646
1647         hstore = capi_open_store(ctx, storename);
1648         if (!hstore)
1649                 return 0;
1650         /* Enumerate all certificates collect any matches */
1651         for(i = 0;;i++)
1652                 {
1653                 cert = CertEnumCertificatesInStore(hstore, cert);
1654                 if (!cert)
1655                         break;
1656                 p = cert->pbCertEncoded;
1657                 x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1658                 if (!x)
1659                         {
1660                         CAPI_trace(ctx, "Can't Parse Certificate %d\n", i);
1661                         continue;
1662                         }
1663                 if (cert_issuer_match(ca_dn, x)
1664                         && X509_check_purpose(x, X509_PURPOSE_SSL_CLIENT, 0))
1665                         {
1666                         key = capi_get_cert_key(ctx, cert);
1667                         if (!key)
1668                                 {
1669                                 X509_free(x);
1670                                 continue;
1671                                 }
1672                         /* Match found: attach extra data to it so
1673                          * we can retrieve the key later.
1674                          */
1675                         excert = CertDuplicateCertificateContext(cert);
1676                         key->pcert = excert;
1677                         X509_set_ex_data(x, cert_capi_idx, key);
1678
1679                         if (!certs)
1680                                 certs = sk_X509_new_null();
1681
1682                         sk_X509_push(certs, x);
1683                         }
1684                 else
1685                         X509_free(x);
1686
1687                 }
1688
1689         if (cert)
1690                 CertFreeCertificateContext(cert);
1691         if (hstore)
1692                 CertCloseStore(hstore, 0);
1693
1694         if (!certs)
1695                 return 0;
1696
1697
1698         /* Select the appropriate certificate */
1699
1700         client_cert_idx = ctx->client_cert_select(e, ssl, certs);
1701
1702         /* Set the selected certificate and free the rest */
1703
1704         for(i = 0; i < sk_X509_num(certs); i++)
1705                 {
1706                 x = sk_X509_value(certs, i);
1707                 if (i == client_cert_idx)
1708                         *pcert = x;
1709                 else
1710                         {
1711                         key = X509_get_ex_data(x, cert_capi_idx);
1712                         capi_free_key(key);
1713                         X509_free(x);
1714                         }
1715                 }
1716
1717         sk_X509_free(certs);
1718
1719         if (!*pcert)
1720                 return 0;
1721
1722         /* Setup key for selected certificate */
1723
1724         key = X509_get_ex_data(*pcert, cert_capi_idx);
1725         *pkey = capi_get_pkey(e, key);
1726         X509_set_ex_data(*pcert, cert_capi_idx, NULL);
1727
1728         return 1;
1729
1730         }
1731
1732
1733 /* Simple client cert selection function: always select first */
1734
1735 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1736         {
1737         return 0;
1738         }
1739
1740 #ifdef OPENSSL_CAPIENG_DIALOG
1741
1742 /* More complex cert selection function, using standard function
1743  * CryptUIDlgSelectCertificateFromStore() to produce a dialog box.
1744  */
1745
1746 /* Definitions which are in cryptuiapi.h but this is not present in older
1747  * versions of headers.
1748  */
1749
1750 #ifndef CRYPTUI_SELECT_LOCATION_COLUMN
1751 #define CRYPTUI_SELECT_LOCATION_COLUMN                   0x000000010
1752 #define CRYPTUI_SELECT_INTENDEDUSE_COLUMN                0x000000004
1753 #endif
1754
1755 #define dlg_title L"OpenSSL Application SSL Client Certificate Selection"
1756 #define dlg_prompt L"Select a certificate to use for authentication"
1757 #define dlg_columns      CRYPTUI_SELECT_LOCATION_COLUMN \
1758                         |CRYPTUI_SELECT_INTENDEDUSE_COLUMN
1759
1760 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1761         {
1762         X509 *x;
1763         HCERTSTORE dstore;
1764         PCCERT_CONTEXT cert;
1765         CAPI_CTX *ctx;
1766         CAPI_KEY *key;
1767         HWND hwnd;
1768         int i, idx = -1;
1769         if (sk_X509_num(certs) == 1)
1770                 return 0;
1771         ctx = ENGINE_get_ex_data(e, capi_idx);
1772         /* Create an in memory store of certificates */
1773         dstore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
1774                                         CERT_STORE_CREATE_NEW_FLAG, NULL);
1775         if (!dstore)
1776                 {
1777                 CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_CREATING_STORE);
1778                 capi_addlasterror();
1779                 goto err;
1780                 }
1781         /* Add all certificates to store */
1782         for(i = 0; i < sk_X509_num(certs); i++)
1783                 {
1784                 x = sk_X509_value(certs, i);
1785                 key = X509_get_ex_data(x, cert_capi_idx);
1786
1787                 if (!CertAddCertificateContextToStore(dstore, key->pcert,
1788                                                 CERT_STORE_ADD_NEW, NULL))
1789                         {
1790                         CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_ADDING_CERT);
1791                         capi_addlasterror();
1792                         goto err;
1793                         }
1794
1795                 }
1796         hwnd = GetForegroundWindow();
1797         if (!hwnd)
1798                 hwnd = GetActiveWindow();
1799         if (!hwnd && ctx->getconswindow)
1800                 hwnd = ctx->getconswindow();
1801         /* Call dialog to select one */
1802         cert = ctx->certselectdlg(dstore, hwnd, dlg_title, dlg_prompt,
1803                                                 dlg_columns, 0, NULL);
1804
1805         /* Find matching cert from list */
1806         if (cert)
1807                 {
1808                 for(i = 0; i < sk_X509_num(certs); i++)
1809                         {
1810                         x = sk_X509_value(certs, i);
1811                         key = X509_get_ex_data(x, cert_capi_idx);
1812                         if (CertCompareCertificate(
1813                                 X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
1814                                         cert->pCertInfo,
1815                                         key->pcert->pCertInfo))
1816                                 {
1817                                 idx = i;
1818                                 break;
1819                                 }
1820                         }
1821                 }
1822
1823         err:
1824         if (dstore)
1825                 CertCloseStore(dstore, 0);
1826         return idx;
1827
1828         }
1829 #endif
1830
1831 #else /* !__COMPILE_CAPIENG */
1832 #include <openssl/engine.h>
1833 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
1834 OPENSSL_EXPORT
1835 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns);
1836 OPENSSL_EXPORT
1837 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns) { return 0; }
1838 IMPLEMENT_DYNAMIC_CHECK_FN()
1839 #else
1840 void ENGINE_load_capi(void){}
1841 #endif
1842 #endif