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