engines/e_capi.c

   1 /* engines/e_capi.c */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   3  * project.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  */
  53
  54
  55 #include <stdio.h>
  56 #include <string.h>
  57 #include <openssl/crypto.h>
  58 #include <openssl/buffer.h>
  59 #include <openssl/engine.h>
  60 #include <openssl/rsa.h>
  61 #include <openssl/bn.h>
  62 #include <openssl/pem.h>
  63
  64 #ifdef OPENSSL_SYS_WIN32
  65 #ifndef OPENSSL_NO_CAPIENG
  66
  67 #ifndef _WIN32_WINNT
  68 #define _WIN32_WINNT 0x400
  69 #endif
  70
  71 #include <windows.h>
  72 #include <wincrypt.h>
  73
  74 #undef X509_NAME
  75
  76 #include "e_capi_err.h"
  77 #include "e_capi_err.c"
  78
  79
  80 static const char *engine_capi_id = "capi";
  81 static const char *engine_capi_name = "CryptoAPI ENGINE";
  82
  83 typedef struct CAPI_CTX_st CAPI_CTX;
  84 typedef struct CAPI_KEY_st CAPI_KEY;
  85
  86 static void capi_addlasterror(void);
  87 static void capi_adderror(DWORD err);
  88
  89 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...);
  90
  91 static int capi_list_providers(CAPI_CTX *ctx, BIO *out);
  92 static int capi_list_containers(CAPI_CTX *ctx, BIO *out);
  93 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *storename);
  94 void capi_free_key(CAPI_KEY *key);
  95 static int client_cert_select(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
  96
  97 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore);
  98
  99 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id);
 100
 101 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
 102         UI_METHOD *ui_method, void *callback_data);
 103 static int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 104              unsigned char *sigret, unsigned int *siglen, const RSA *rsa);
 105 static int capi_rsa_priv_enc(int flen, const unsigned char *from,
 106                 unsigned char *to, RSA *rsa, int padding);
 107 static int capi_rsa_priv_dec(int flen, const unsigned char *from,
 108                 unsigned char *to, RSA *rsa, int padding);
 109 static int capi_rsa_free(RSA *rsa);
 110
 111 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
 112                                                         DSA *dsa);
 113 static int capi_dsa_free(DSA *dsa);
 114
 115 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
 116         STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey,
 117         STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data);
 118
 119 /* This structure contains CAPI ENGINE specific data:
 120  * it contains various global options and affects how
 121  * other functions behave.
 122  */
 123
 124 #define CAPI_DBG_TRACE  2
 125 #define CAPI_DBG_ERROR  1
 126
 127 struct CAPI_CTX_st {
 128         int debug_level;
 129         char *debug_file;
 130         /* Parameters to use for container lookup */
 131         DWORD keytype;
 132         LPTSTR cspname;
 133         DWORD csptype;
 134         /* Certificate store name to use */
 135         LPTSTR storename;
 136         LPTSTR ssl_client_store;
 137
 138 /* Lookup string meanings in load_private_key */
 139 /* Substring of subject: uses "storename" */
 140 #define CAPI_LU_SUBSTR          0
 141 /* Friendly name: uses storename */
 142 #define CAPI_LU_FNAME           1
 143 /* Container name: uses cspname, keytype */
 144 #define CAPI_LU_CONTNAME        2
 145         int lookup_method;
 146 /* Info to dump with dumpcerts option */
 147 /* Issuer and serial name strings */
 148 #define CAPI_DMP_SUMMARY        0x1
 149 /* Friendly name */
 150 #define CAPI_DMP_FNAME          0x2
 151 /* Full X509_print dump */
 152 #define CAPI_DMP_FULL           0x4
 153 /* Dump PEM format certificate */
 154 #define CAPI_DMP_PEM            0x8
 155 /* Dump pseudo key (if possible) */
 156 #define CAPI_DMP_PSKEY          0x10
 157 /* Dump key info (if possible) */
 158 #define CAPI_DMP_PKEYINFO       0x20
 159
 160         DWORD dump_flags;
 161 };
 162
 163
 164 static CAPI_CTX *capi_ctx_new();
 165 static void capi_ctx_free(CAPI_CTX *ctx);
 166 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check);
 167 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx);
 168
 169 #define CAPI_CMD_LIST_CERTS             ENGINE_CMD_BASE
 170 #define CAPI_CMD_LOOKUP_CERT            (ENGINE_CMD_BASE + 1)
 171 #define CAPI_CMD_DEBUG_LEVEL            (ENGINE_CMD_BASE + 2)
 172 #define CAPI_CMD_DEBUG_FILE             (ENGINE_CMD_BASE + 3)
 173 #define CAPI_CMD_KEYTYPE                (ENGINE_CMD_BASE + 4)
 174 #define CAPI_CMD_LIST_CSPS              (ENGINE_CMD_BASE + 5)
 175 #define CAPI_CMD_SET_CSP_IDX            (ENGINE_CMD_BASE + 6)
 176 #define CAPI_CMD_SET_CSP_NAME           (ENGINE_CMD_BASE + 7)
 177 #define CAPI_CMD_SET_CSP_TYPE           (ENGINE_CMD_BASE + 8)
 178 #define CAPI_CMD_LIST_CONTAINERS        (ENGINE_CMD_BASE + 9)
 179 #define CAPI_CMD_LIST_OPTIONS           (ENGINE_CMD_BASE + 10)
 180 #define CAPI_CMD_LOOKUP_METHOD          (ENGINE_CMD_BASE + 11)
 181 #define CAPI_CMD_STORE_NAME             (ENGINE_CMD_BASE + 12)
 182
 183 static const ENGINE_CMD_DEFN capi_cmd_defns[] = {
 184         {CAPI_CMD_LIST_CERTS,
 185                 "list_certs",
 186                 "List all certificates in store",
 187                 ENGINE_CMD_FLAG_NO_INPUT},
 188         {CAPI_CMD_LOOKUP_CERT,
 189                 "lookup_cert",
 190                 "Lookup and output certificates",
 191                 ENGINE_CMD_FLAG_STRING},
 192         {CAPI_CMD_DEBUG_LEVEL,
 193                 "debug_level",
 194                 "debug level (1=errors, 2=trace)",
 195                 ENGINE_CMD_FLAG_NUMERIC},
 196         {CAPI_CMD_DEBUG_FILE,
 197                 "debug_file",
 198                 "debugging filename)",
 199                 ENGINE_CMD_FLAG_STRING},
 200         {CAPI_CMD_KEYTYPE,
 201                 "key_type",
 202                 "Key type: 1=AT_KEYEXCHANGE (default), 2=AT_SIGNATURE",
 203                 ENGINE_CMD_FLAG_NUMERIC},
 204         {CAPI_CMD_LIST_CSPS,
 205                 "list_csps",
 206                 "List all CSPs",
 207                 ENGINE_CMD_FLAG_NO_INPUT},
 208         {CAPI_CMD_SET_CSP_IDX,
 209                 "csp_idx",
 210                 "Set CSP by index",
 211                 ENGINE_CMD_FLAG_NUMERIC},
 212         {CAPI_CMD_SET_CSP_NAME,
 213                 "csp_name",
 214                 "Set CSP name, (default CSP used if not specified)",
 215                 ENGINE_CMD_FLAG_STRING},
 216         {CAPI_CMD_SET_CSP_TYPE,
 217                 "csp_type",
 218                 "Set CSP type, (default RSA_PROV_FULL)",
 219                 ENGINE_CMD_FLAG_NUMERIC},
 220         {CAPI_CMD_LIST_CONTAINERS,
 221                 "list_containers",
 222                 "list container names",
 223                 ENGINE_CMD_FLAG_NO_INPUT},
 224         {CAPI_CMD_LIST_OPTIONS,
 225                 "list_options",
 226                 "Set list options (1=summary,2=friendly name, 4=full printout, 8=PEM output, 16=XXX, "
 227                 "32=private key info)",
 228                 ENGINE_CMD_FLAG_NUMERIC},
 229         {CAPI_CMD_LOOKUP_METHOD,
 230                 "lookup_method",
 231                 "Set key lookup method (1=substring, 2=friendlyname, 3=container name)",
 232                 ENGINE_CMD_FLAG_NUMERIC},
 233         {CAPI_CMD_STORE_NAME,
 234                 "store_name",
 235                 "certificate store name, default \"MY\"",
 236                 ENGINE_CMD_FLAG_STRING},
 237
 238         {0, NULL, NULL, 0}
 239         };
 240
 241 static int capi_idx = -1;
 242 static int rsa_capi_idx = -1;
 243 static int dsa_capi_idx = -1;
 244 static int cert_capi_idx = -1;
 245
 246 static int capi_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
 247         {
 248         int ret = 1;
 249         CAPI_CTX *ctx;
 250         BIO *out;
 251         if (capi_idx == -1)
 252                 {
 253                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_ENGINE_NOT_INITIALIZED);
 254                 return 0;
 255                 }
 256         ctx = ENGINE_get_ex_data(e, capi_idx);
 257         out = BIO_new_fp(stdout, BIO_NOCLOSE);
 258         switch (cmd)
 259                 {
 260                 case CAPI_CMD_LIST_CSPS:
 261                 ret = capi_list_providers(ctx, out);
 262                 break;
 263
 264                 case CAPI_CMD_LIST_CERTS:
 265                 ret = capi_list_certs(ctx, out, NULL);
 266                 break;
 267
 268                 case CAPI_CMD_LOOKUP_CERT:
 269                 ret = capi_list_certs(ctx, out, p);
 270                 break;
 271
 272                 case CAPI_CMD_LIST_CONTAINERS:
 273                 ret = capi_list_containers(ctx, out);
 274                 break;
 275
 276                 case CAPI_CMD_STORE_NAME:
 277                 if (ctx->storename)
 278                         OPENSSL_free(ctx->storename);
 279                 ctx->storename = BUF_strdup(p);
 280                 CAPI_trace(ctx, "Setting store name to %s\n", p);
 281                 break;
 282
 283                 case CAPI_CMD_DEBUG_LEVEL:
 284                 ctx->debug_level = (int)i;
 285                 CAPI_trace(ctx, "Setting debug level to %d\n", ctx->debug_level);
 286                 break;
 287
 288                 case CAPI_CMD_DEBUG_FILE:
 289                 ctx->debug_file = BUF_strdup(p);
 290                 CAPI_trace(ctx, "Setting debug file to %s\n", ctx->debug_file);
 291                 break;
 292
 293                 case CAPI_CMD_KEYTYPE:
 294                 ctx->keytype = i;
 295                 CAPI_trace(ctx, "Setting key type to %d\n", ctx->keytype);
 296                 break;
 297
 298                 case CAPI_CMD_SET_CSP_IDX:
 299                 ret = capi_ctx_set_provname_idx(ctx, i);
 300                 break;
 301
 302                 case CAPI_CMD_LIST_OPTIONS:
 303                 ctx->dump_flags = i;
 304                 break;
 305
 306                 case CAPI_CMD_LOOKUP_METHOD:
 307                 if (i < 1 || i > 3)
 308                         {
 309                         CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_INVALID_LOOKUP_METHOD);
 310                         return 0;
 311                         }
 312                 ctx->lookup_method = i;
 313                 break;
 314
 315                 case CAPI_CMD_SET_CSP_NAME:
 316                 ret = capi_ctx_set_provname(ctx, p, ctx->csptype, 1);
 317                 break;
 318
 319                 case CAPI_CMD_SET_CSP_TYPE:
 320                 ctx->csptype = i;
 321                 break;
 322
 323                 default:
 324                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_UNKNOWN_COMMAND);
 325                 ret = 0;
 326         }
 327
 328         BIO_free(out);
 329         return ret;
 330
 331         }
 332
 333 static RSA_METHOD capi_rsa_method =
 334         {
 335         "CryptoAPI RSA method",
 336         0,                              /* pub_enc */
 337         0,                              /* pub_dec */
 338         capi_rsa_priv_enc,              /* priv_enc */
 339         capi_rsa_priv_dec,              /* priv_dec */
 340         0,                              /* rsa_mod_exp */
 341         0,                              /* bn_mod_exp */
 342         0,                              /* init */
 343         capi_rsa_free,                  /* finish */
 344         RSA_FLAG_SIGN_VER,              /* flags */
 345         NULL,                           /* app_data */
 346         capi_rsa_sign,                  /* rsa_sign */
 347         0                               /* rsa_verify */
 348         };
 349
 350 static DSA_METHOD capi_dsa_method =
 351         {
 352         "CryptoAPI DSA method",
 353         capi_dsa_do_sign,               /* dsa_do_sign */
 354         0,                              /* dsa_sign_setup */
 355         0,                              /* dsa_do_verify */
 356         0,                              /* dsa_mod_exp */
 357         0,                              /* bn_mod_exp */
 358         0,                              /* init */
 359         capi_dsa_free,                  /* finish */
 360         0,                              /* flags */
 361         NULL,                           /* app_data */
 362         0,                              /* dsa_paramgen */
 363         0                               /* dsa_keygen */
 364         };
 365
 366 static int capi_init(ENGINE *e)
 367         {
 368         CAPI_CTX *ctx;
 369         const RSA_METHOD *ossl_rsa_meth;
 370         const DSA_METHOD *ossl_dsa_meth;
 371         capi_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, 0);
 372         cert_capi_idx = X509_get_ex_new_index(0, NULL, NULL, NULL, 0);
 373
 374         ctx = capi_ctx_new();
 375         if (!ctx || (capi_idx < 0))
 376                 goto memerr;
 377
 378         ENGINE_set_ex_data(e, capi_idx, ctx);
 379         /* Setup RSA_METHOD */
 380         rsa_capi_idx = RSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
 381         ossl_rsa_meth = RSA_PKCS1_SSLeay();
 382         capi_rsa_method.rsa_pub_enc = ossl_rsa_meth->rsa_pub_enc;
 383         capi_rsa_method.rsa_pub_dec = ossl_rsa_meth->rsa_pub_dec;
 384         capi_rsa_method.rsa_mod_exp = ossl_rsa_meth->rsa_mod_exp;
 385         capi_rsa_method.bn_mod_exp = ossl_rsa_meth->bn_mod_exp;
 386
 387         /* Setup DSA Method */
 388         dsa_capi_idx = DSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
 389         ossl_dsa_meth = DSA_OpenSSL();
 390         capi_dsa_method.dsa_do_verify = ossl_dsa_meth->dsa_do_verify;
 391         capi_dsa_method.dsa_mod_exp = ossl_dsa_meth->dsa_mod_exp;
 392         capi_dsa_method.bn_mod_exp = ossl_dsa_meth->bn_mod_exp;
 393
 394         return 1;
 395
 396         memerr:
 397         CAPIerr(CAPI_F_CAPI_INIT, ERR_R_MALLOC_FAILURE);
 398         return 0;
 399
 400         return 1;
 401         }
 402
 403 static int capi_destroy(ENGINE *e)
 404         {
 405         ERR_unload_CAPI_strings();
 406         return 1;
 407         }
 408
 409 static int capi_finish(ENGINE *e)
 410         {
 411         CAPI_CTX *ctx;
 412         ctx = ENGINE_get_ex_data(e, capi_idx);
 413         capi_ctx_free(ctx);
 414         ENGINE_set_ex_data(e, capi_idx, NULL);
 415         return 1;
 416         }
 417
 418
 419 /* CryptoAPI key application data. This contains
 420  * a handle to the private key container (for sign operations)
 421  * and a handle to the key (for decrypt operations).
 422  */
 423
 424 struct CAPI_KEY_st
 425         {
 426         /* Associated certificate context (if any) */
 427         PCCERT_CONTEXT pcert;
 428         HCRYPTPROV hprov;
 429         HCRYPTKEY key;
 430         DWORD keyspec;
 431         };
 432
 433 static int bind_capi(ENGINE *e)
 434         {
 435         if (!ENGINE_set_id(e, engine_capi_id)
 436                 || !ENGINE_set_name(e, engine_capi_name)
 437                 || !ENGINE_set_init_function(e, capi_init)
 438                 || !ENGINE_set_finish_function(e, capi_finish)
 439                 || !ENGINE_set_destroy_function(e, capi_destroy)
 440                 || !ENGINE_set_RSA(e, &capi_rsa_method)
 441                 || !ENGINE_set_DSA(e, &capi_dsa_method)
 442                 || !ENGINE_set_load_privkey_function(e, capi_load_privkey)
 443                 || !ENGINE_set_load_ssl_client_cert_function(e,
 444                                                 capi_load_ssl_client_cert)
 445                 || !ENGINE_set_cmd_defns(e, capi_cmd_defns)
 446                 || !ENGINE_set_ctrl_function(e, capi_ctrl))
 447                         return 0;
 448         ERR_load_CAPI_strings();
 449
 450         return 1;
 451
 452         }
 453
 454 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
 455 static int bind_helper(ENGINE *e, const char *id)
 456         {
 457         if(id && (strcmp(id, engine_capi_id) != 0))
 458                 return 0;
 459         if(!bind_capi(e))
 460                 return 0;
 461         return 1;
 462         }
 463 IMPLEMENT_DYNAMIC_CHECK_FN()
 464 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
 465 #else
 466 static ENGINE *engine_capi(void)
 467         {
 468         ENGINE *ret = ENGINE_new();
 469         if(!ret)
 470                 return NULL;
 471         if(!bind_capi(ret))
 472                 {
 473                 ENGINE_free(ret);
 474                 return NULL;
 475                 }
 476         return ret;
 477         }
 478
 479 void ENGINE_load_capi(void)
 480         {
 481         /* Copied from eng_[openssl|dyn].c */
 482         ENGINE *toadd = engine_capi();
 483         if(!toadd) return;
 484         ENGINE_add(toadd);
 485         ENGINE_free(toadd);
 486         ERR_clear_error();
 487         }
 488 #endif
 489
 490
 491 static int lend_tobn(BIGNUM *bn, unsigned char *bin, int binlen)
 492         {
 493         int i;
 494         /* Reverse buffer in place: since this is a keyblob structure
 495          * that will be freed up after conversion anyway it doesn't
 496          * matter if we change it.
 497          */
 498         for(i = 0; i < binlen / 2; i++)
 499                 {
 500                 unsigned char c;
 501                 c = bin[i];
 502                 bin[i] = bin[binlen - i - 1];
 503                 bin[binlen - i - 1] = c;
 504                 }
 505
 506         if (!BN_bin2bn(bin, binlen, bn))
 507                 return 0;
 508         return 1;
 509         }
 510
 511 /* Given a CAPI_KEY get an EVP_PKEY structure */
 512
 513 static EVP_PKEY *capi_get_pkey(ENGINE *eng, CAPI_KEY *key)
 514         {
 515         unsigned char *pubkey = NULL;
 516         DWORD len;
 517         BLOBHEADER *bh;
 518         RSA *rkey = NULL;
 519         DSA *dkey = NULL;
 520         EVP_PKEY *ret = NULL;
 521         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, NULL, &len))
 522                 {
 523                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_LENGTH_ERROR);
 524                 capi_addlasterror();
 525                 return NULL;
 526                 }
 527
 528         pubkey = OPENSSL_malloc(len);
 529
 530         if (!pubkey)
 531                 goto memerr;
 532
 533         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, pubkey, &len))
 534                 {
 535                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_ERROR);
 536                 capi_addlasterror();
 537                 goto err;
 538                 }
 539
 540         bh = (BLOBHEADER *)pubkey;
 541         if (bh->bType != PUBLICKEYBLOB)
 542                 {
 543                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_PUBLIC_KEY_BLOB);
 544                 goto err;
 545                 }
 546         if (bh->aiKeyAlg == CALG_RSA_SIGN || bh->aiKeyAlg == CALG_RSA_KEYX)
 547                 {
 548                 RSAPUBKEY *rp;
 549                 DWORD rsa_modlen;
 550                 unsigned char *rsa_modulus;
 551                 rp = (RSAPUBKEY *)(bh + 1);
 552                 if (rp->magic != 0x31415352)
 553                         {
 554                         char magstr[10];
 555                         BIO_snprintf(magstr, 10, "%lx", rp->magic);
 556                         CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_RSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
 557                         ERR_add_error_data(2, "magic=0x", magstr);
 558                         goto err;
 559                         }
 560                 rsa_modulus = (unsigned char *)(rp + 1);
 561                 rkey = RSA_new_method(eng);
 562                 if (!rkey)
 563                         goto memerr;
 564
 565                 rkey->e = BN_new();
 566                 rkey->n = BN_new();
 567
 568                 if (!rkey->e || !rkey->n)
 569                         goto memerr;
 570
 571                 if (!BN_set_word(rkey->e, rp->pubexp))
 572                         goto memerr;
 573
 574                 rsa_modlen = rp->bitlen / 8;
 575                 if (!lend_tobn(rkey->n, rsa_modulus, rsa_modlen))
 576                         goto memerr;
 577
 578                 RSA_set_ex_data(rkey, rsa_capi_idx, key);
 579
 580                 if (!(ret = EVP_PKEY_new()))
 581                         goto memerr;
 582
 583                 EVP_PKEY_assign_RSA(ret, rkey);
 584                 rkey = NULL;
 585
 586                 }
 587         else if (bh->aiKeyAlg == CALG_DSS_SIGN)
 588                 {
 589                 DSSPUBKEY *dp;
 590                 DWORD dsa_plen;
 591                 unsigned char *btmp;
 592                 dp = (DSSPUBKEY *)(bh + 1);
 593                 if (dp->magic != 0x31535344)
 594                         {
 595                         char magstr[10];
 596                         BIO_snprintf(magstr, 10, "%lx", dp->magic);
 597                         CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_DSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
 598                         ERR_add_error_data(2, "magic=0x", magstr);
 599                         goto err;
 600                         }
 601                 dsa_plen = dp->bitlen / 8;
 602                 btmp = (unsigned char *)(dp + 1);
 603                 dkey = DSA_new_method(eng);
 604                 if (!dkey)
 605                         goto memerr;
 606                 dkey->p = BN_new();
 607                 dkey->q = BN_new();
 608                 dkey->g = BN_new();
 609                 dkey->pub_key = BN_new();
 610                 if (!dkey->p || !dkey->q || !dkey->g || !dkey->pub_key)
 611                         goto memerr;
 612                 if (!lend_tobn(dkey->p, btmp, dsa_plen))
 613                         goto memerr;
 614                 btmp += dsa_plen;
 615                 if (!lend_tobn(dkey->q, btmp, 20))
 616                         goto memerr;
 617                 btmp += 20;
 618                 if (!lend_tobn(dkey->g, btmp, dsa_plen))
 619                         goto memerr;
 620                 btmp += dsa_plen;
 621                 if (!lend_tobn(dkey->pub_key, btmp, dsa_plen))
 622                         goto memerr;
 623                 btmp += dsa_plen;
 624
 625                 DSA_set_ex_data(dkey, dsa_capi_idx, key);
 626
 627                 if (!(ret = EVP_PKEY_new()))
 628                         goto memerr;
 629
 630                 EVP_PKEY_assign_DSA(ret, dkey);
 631                 dkey = NULL;
 632                 }
 633         else
 634                 {
 635                 char algstr[10];
 636                 BIO_snprintf(algstr, 10, "%lx", bh->aiKeyAlg);
 637                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_UNSUPPORTED_PUBLIC_KEY_ALGORITHM);
 638                 ERR_add_error_data(2, "aiKeyAlg=0x", algstr);
 639                 goto err;
 640                 }
 641
 642
 643         err:
 644         if (pubkey)
 645                 OPENSSL_free(pubkey);
 646         if (!ret)
 647                 {
 648                 if (rkey)
 649                         RSA_free(rkey);
 650                 if (dkey)
 651                         DSA_free(dkey);
 652                 }
 653
 654         return ret;
 655
 656 memerr:
 657         CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, ERR_R_MALLOC_FAILURE);
 658         goto err;
 659
 660         }
 661
 662 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
 663         UI_METHOD *ui_method, void *callback_data)
 664         {
 665         CAPI_CTX *ctx;
 666         CAPI_KEY *key;
 667         EVP_PKEY *ret;
 668         ctx = ENGINE_get_ex_data(eng, capi_idx);
 669
 670         if (!ctx)
 671                 {
 672                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_CANT_FIND_CAPI_CONTEXT);
 673                 return NULL;
 674                 }
 675
 676         key = capi_find_key(ctx, key_id);
 677
 678         if (!key)
 679                 return NULL;
 680
 681         ret = capi_get_pkey(eng, key);
 682
 683         if (!ret)
 684                 capi_free_key(key);
 685         return ret;
 686
 687         }
 688
 689 /* CryptoAPI RSA operations */
 690
 691 int capi_rsa_priv_enc(int flen, const unsigned char *from,
 692                 unsigned char *to, RSA *rsa, int padding)
 693         {
 694         CAPIerr(CAPI_F_CAPI_RSA_PRIV_ENC, CAPI_R_FUNCTION_NOT_SUPPORTED);
 695         return -1;
 696         }
 697
 698 int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 699              unsigned char *sigret, unsigned int *siglen, const RSA *rsa)
 700         {
 701         ALG_ID alg;
 702         HCRYPTHASH hash;
 703         DWORD slen;
 704         unsigned int i;
 705         int ret = -1;
 706         CAPI_KEY *capi_key;
 707         CAPI_CTX *ctx;
 708
 709         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 710
 711         CAPI_trace(ctx, "Called CAPI_rsa_sign()\n");
 712
 713         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 714         if (!capi_key)
 715                 {
 716                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_GET_KEY);
 717                 return -1;
 718                 }
 719 /* Convert the signature type to a CryptoAPI algorithm ID */
 720         switch(dtype)
 721                 {
 722         case NID_sha1:
 723                 alg = CALG_SHA1;
 724                 break;
 725
 726         case NID_md5:
 727                 alg = CALG_MD5;
 728                 break;
 729
 730         case NID_md5_sha1:
 731                 alg = CALG_SSL3_SHAMD5;
 732                 break;
 733         default:
 734                 {
 735                 char algstr[10];
 736                 BIO_snprintf(algstr, 10, "%lx", dtype);
 737                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_UNSUPPORTED_ALGORITHM_NID);
 738                 ERR_add_error_data(2, "NID=0x", algstr);
 739                 return -1;
 740                 }
 741         }
 742
 743
 744
 745 /* Create the hash object */
 746         if(!CryptCreateHash(capi_key->hprov, alg, 0, 0, &hash))
 747                 {
 748                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
 749                 capi_addlasterror();
 750                 return -1;
 751                 }
 752 /* Set the hash value to the value passed */
 753
 754         if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)m, 0))
 755                 {
 756                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
 757                 capi_addlasterror();
 758                 goto err;
 759                 }
 760
 761
 762 /* Finally sign it */
 763         slen = RSA_size(rsa);
 764         if(!CryptSignHash(hash, capi_key->keyspec, NULL, 0, sigret, &slen))
 765                 {
 766                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_ERROR_SIGNING_HASH);
 767                 capi_addlasterror();
 768                 goto err;
 769                 }
 770         else
 771                 {
 772                 ret = 1;
 773                 /* Inplace byte reversal of signature */
 774                 for(i = 0; i < slen / 2; i++)
 775                         {
 776                         unsigned char c;
 777                         c = sigret[i];
 778                         sigret[i] = sigret[slen - i - 1];
 779                         sigret[slen - i - 1] = c;
 780                         }
 781                 *siglen = slen;
 782                 }
 783
 784         /* Now cleanup */
 785
 786 err:
 787         CryptDestroyHash(hash);
 788
 789         return ret;
 790         }
 791
 792 int capi_rsa_priv_dec(int flen, const unsigned char *from,
 793                 unsigned char *to, RSA *rsa, int padding)
 794         {
 795         int i;
 796         unsigned char *tmpbuf;
 797         CAPI_KEY *capi_key;
 798         CAPI_CTX *ctx;
 799         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 800
 801         CAPI_trace(ctx, "Called capi_rsa_priv_dec()\n");
 802
 803
 804         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 805         if (!capi_key)
 806                 {
 807                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_CANT_GET_KEY);
 808                 return -1;
 809                 }
 810
 811         if(padding != RSA_PKCS1_PADDING)
 812                 {
 813                 char errstr[10];
 814                 BIO_snprintf(errstr, 10, "%d", padding);
 815                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_UNSUPPORTED_PADDING);
 816                 ERR_add_error_data(2, "padding=", errstr);
 817                 return -1;
 818                 }
 819
 820         /* Create temp reverse order version of input */
 821         if(!(tmpbuf = OPENSSL_malloc(flen)) )
 822                 {
 823                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, ERR_R_MALLOC_FAILURE);
 824                 return -1;
 825                 }
 826         for(i = 0; i < flen; i++)
 827                 tmpbuf[flen - i - 1] = from[i];
 828
 829         /* Finally decrypt it */
 830         if(!CryptDecrypt(capi_key->key, 0, TRUE, 0, tmpbuf, &flen))
 831                 {
 832                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_DECRYPT_ERROR);
 833                 capi_addlasterror();
 834                 OPENSSL_free(tmpbuf);
 835                 return -1;
 836                 }
 837         else memcpy(to, tmpbuf, flen);
 838
 839         OPENSSL_free(tmpbuf);
 840
 841         return flen;
 842         }
 843
 844 static int capi_rsa_free(RSA *rsa)
 845         {
 846         CAPI_KEY *capi_key;
 847         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 848         capi_free_key(capi_key);
 849         RSA_set_ex_data(rsa, rsa_capi_idx, 0);
 850         return 1;
 851         }
 852
 853 /* CryptoAPI DSA operations */
 854
 855 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
 856                                                                 DSA *dsa)
 857         {
 858         HCRYPTHASH hash;
 859         DWORD slen;
 860         DSA_SIG *ret = NULL;
 861         CAPI_KEY *capi_key;
 862         CAPI_CTX *ctx;
 863         unsigned char csigbuf[40];
 864
 865         ctx = ENGINE_get_ex_data(dsa->engine, capi_idx);
 866
 867         CAPI_trace(ctx, "Called CAPI_dsa_do_sign()\n");
 868
 869         capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
 870
 871         if (!capi_key)
 872                 {
 873                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_GET_KEY);
 874                 return NULL;
 875                 }
 876
 877         if (dlen != 20)
 878                 {
 879                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_INVALID_DIGEST_LENGTH);
 880                 return NULL;
 881                 }
 882
 883         /* Create the hash object */
 884         if(!CryptCreateHash(capi_key->hprov, CALG_SHA1, 0, 0, &hash))
 885                 {
 886                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
 887                 capi_addlasterror();
 888                 return NULL;
 889                 }
 890
 891         /* Set the hash value to the value passed */
 892         if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)digest, 0))
 893                 {
 894                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
 895                 capi_addlasterror();
 896                 goto err;
 897                 }
 898
 899
 900         /* Finally sign it */
 901         slen = sizeof(csigbuf);
 902         if(!CryptSignHash(hash, capi_key->keyspec, NULL, 0, csigbuf, &slen))
 903                 {
 904                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_ERROR_SIGNING_HASH);
 905                 capi_addlasterror();
 906                 goto err;
 907                 }
 908         else
 909                 {
 910                 ret = DSA_SIG_new();
 911                 if (!ret)
 912                         goto err;
 913                 ret->r = BN_new();
 914                 ret->s = BN_new();
 915                 if (!ret->r || !ret->s)
 916                         goto err;
 917                 if (!lend_tobn(ret->r, csigbuf, 20)
 918                         || !lend_tobn(ret->s, csigbuf + 20, 20))
 919                         {
 920                         DSA_SIG_free(ret);
 921                         ret = NULL;
 922                         goto err;
 923                         }
 924                 }
 925
 926         /* Now cleanup */
 927
 928 err:
 929         OPENSSL_cleanse(csigbuf, 40);
 930         CryptDestroyHash(hash);
 931         return ret;
 932         }
 933
 934 static int capi_dsa_free(DSA *dsa)
 935         {
 936         CAPI_KEY *capi_key;
 937         capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
 938         capi_free_key(capi_key);
 939         DSA_set_ex_data(dsa, dsa_capi_idx, 0);
 940         return 1;
 941         }
 942
 943 static void capi_vtrace(CAPI_CTX *ctx, int level, char *format, va_list argptr)
 944         {
 945         BIO *out;
 946
 947         if (!ctx || (ctx->debug_level < level) || (!ctx->debug_file))
 948                 return;
 949         out = BIO_new_file(ctx->debug_file, "a+");
 950         BIO_vprintf(out, format, argptr);
 951         BIO_free(out);
 952         }
 953
 954 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...)
 955         {
 956         va_list args;
 957         va_start(args, format);
 958         capi_vtrace(ctx, CAPI_DBG_TRACE, format, args);
 959         va_end(args);
 960         }
 961
 962 static void capi_addlasterror(void)
 963         {
 964         capi_adderror(GetLastError());
 965         }
 966
 967 static void capi_adderror(DWORD err)
 968         {
 969         char errstr[10];
 970         BIO_snprintf(errstr, 10, "%lX", err);
 971         ERR_add_error_data(2, "Error code= 0x", errstr);
 972         }
 973
 974 static char *wide_to_asc(LPWSTR wstr)
 975         {
 976         char *str;
 977         if (!wstr)
 978                 return NULL;
 979         str = OPENSSL_malloc(wcslen(wstr) + 1);
 980         if (!str)
 981                 {
 982                 CAPIerr(CAPI_F_WIDE_TO_ASC, ERR_R_MALLOC_FAILURE);
 983                 return NULL;
 984                 }
 985         sprintf(str, "%S", wstr);
 986         return str;
 987         }
 988
 989 static int capi_get_provname(CAPI_CTX *ctx, LPSTR *pname, DWORD *ptype, DWORD idx)
 990         {
 991         LPSTR name;
 992         DWORD len, err;
 993         CAPI_trace(ctx, "capi_get_provname, index=%d\n", idx);
 994         if (!CryptEnumProviders(idx, NULL, 0, ptype, NULL, &len))
 995                 {
 996                 err = GetLastError();
 997                 if (err == ERROR_NO_MORE_ITEMS)
 998                         return 2;
 999                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1000                 capi_adderror(err);
1001                 return 0;
1002                 }
1003         name = OPENSSL_malloc(len);
1004                 if (!CryptEnumProviders(idx, NULL, 0, ptype, name, &len))
1005                 {
1006                 err = GetLastError();
1007                 if (err == ERROR_NO_MORE_ITEMS)
1008                         return 2;
1009                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1010                 capi_adderror(err);
1011                 return 0;
1012                 }
1013         *pname = name;
1014         CAPI_trace(ctx, "capi_get_provname, returned name=%s, type=%d\n", name, *ptype);
1015
1016         return 1;
1017         }
1018
1019 static int capi_list_providers(CAPI_CTX *ctx, BIO *out)
1020         {
1021         DWORD idx, ptype;
1022         int ret;
1023         LPTSTR provname = NULL;
1024         CAPI_trace(ctx, "capi_list_providers\n");
1025         BIO_printf(out, "Available CSPs:\n");
1026         for(idx = 0; ; idx++)
1027                 {
1028                 ret = capi_get_provname(ctx, &provname, &ptype, idx);
1029                 if (ret == 2)
1030                         break;
1031                 if (ret == 0)
1032                         break;
1033                 BIO_printf(out, "%d. %s, type %d\n", idx, provname, ptype);
1034                 OPENSSL_free(provname);
1035                 }
1036         return 1;
1037         }
1038
1039 static int capi_list_containers(CAPI_CTX *ctx, BIO *out)
1040         {
1041         int ret = 1;
1042         HCRYPTPROV hprov;
1043         DWORD err, idx, flags, buflen = 0, clen;
1044         LPSTR cname;
1045         CAPI_trace(ctx, "Listing containers CSP=%s, type = %d\n", ctx->cspname, ctx->csptype);
1046         if (!CryptAcquireContext(&hprov, NULL, ctx->cspname, ctx->csptype, CRYPT_VERIFYCONTEXT))
1047                 {
1048                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1049                 capi_addlasterror();
1050                 return 0;
1051                 }
1052         if (!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, NULL, &buflen, CRYPT_FIRST))
1053                 {
1054                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1055                 capi_addlasterror();
1056                 return 0;
1057                 }
1058         CAPI_trace(ctx, "Got max container len %d\n", buflen);
1059         if (buflen == 0)
1060                 buflen = 1024;
1061         cname = OPENSSL_malloc(buflen);
1062         if (!cname)
1063                 {
1064                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, ERR_R_MALLOC_FAILURE);
1065                 goto err;
1066                 }
1067
1068         for (idx = 0;;idx++)
1069                 {
1070                 clen = buflen;
1071                 cname[0] = 0;
1072
1073                 if (idx == 0)
1074                         flags = CRYPT_FIRST;
1075                 else
1076                         flags = 0;
1077                 if(!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, cname, &clen, flags))
1078                         {
1079                         err = GetLastError();
1080                         if (err == ERROR_NO_MORE_ITEMS)
1081                                 goto done;
1082                         CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1083                         capi_adderror(err);
1084                         goto err;
1085                         }
1086                 CAPI_trace(ctx, "Container name %s, len=%d, index=%d, flags=%d\n", cname, clen, idx, flags);
1087                 if (!cname[0] && (clen == buflen))
1088                         {
1089                         CAPI_trace(ctx, "Enumerate bug: using workaround\n");
1090                         goto done;
1091                         }
1092                 BIO_printf(out, "%d. %s\n", idx, cname);
1093                 }
1094         err:
1095
1096         ret = 0;
1097
1098         done:
1099         if (cname)
1100                 OPENSSL_free(cname);
1101         CryptReleaseContext(hprov, 0);
1102
1103         return ret;
1104         }
1105
1106 CRYPT_KEY_PROV_INFO *capi_get_prov_info(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1107         {
1108         DWORD len;
1109         CRYPT_KEY_PROV_INFO *pinfo;
1110
1111         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, NULL, &len))
1112                 return NULL;
1113         pinfo = OPENSSL_malloc(len);
1114         if (!pinfo)
1115                 {
1116                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, ERR_R_MALLOC_FAILURE);
1117                 return NULL;
1118                 }
1119         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, pinfo, &len))
1120                 {
1121                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, CAPI_R_ERROR_GETTING_KEY_PROVIDER_INFO);
1122                 capi_addlasterror();
1123                 OPENSSL_free(pinfo);
1124                 return NULL;
1125                 }
1126         return pinfo;
1127         }
1128
1129 static void capi_dump_prov_info(CAPI_CTX *ctx, BIO *out, CRYPT_KEY_PROV_INFO *pinfo)
1130         {
1131         char *provname = NULL, *contname = NULL;
1132         if (!pinfo)
1133                 {
1134                 BIO_printf(out, "  No Private Key\n");
1135                 return;
1136                 }
1137         provname = wide_to_asc(pinfo->pwszProvName);
1138         contname = wide_to_asc(pinfo->pwszContainerName);
1139         if (!provname || !contname)
1140                 goto err;
1141
1142         BIO_printf(out, "  Private Key Info:\n");
1143         BIO_printf(out, "    Provider Name:  %s, Provider Type %d\n", provname, pinfo->dwProvType);
1144         BIO_printf(out, "    Container Name: %s, Key Type %d\n", contname, pinfo->dwKeySpec);
1145         err:
1146         if (provname)
1147                 OPENSSL_free(provname);
1148         if (contname)
1149                 OPENSSL_free(contname);
1150         }
1151
1152 char * capi_cert_get_fname(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1153         {
1154         LPWSTR wfname;
1155         DWORD dlen;
1156
1157         CAPI_trace(ctx, "capi_cert_get_fname\n");
1158         if (!CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, NULL, &dlen))
1159                 return NULL;
1160         wfname = OPENSSL_malloc(dlen);
1161         if (CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, wfname, &dlen))
1162                 {
1163                 char *fname = wide_to_asc(wfname);
1164                 OPENSSL_free(wfname);
1165                 return fname;
1166                 }
1167         CAPIerr(CAPI_F_CAPI_CERT_GET_FNAME, CAPI_R_ERROR_GETTING_FRIENDLY_NAME);
1168         capi_addlasterror();
1169
1170         OPENSSL_free(wfname);
1171         return NULL;
1172         }
1173
1174
1175 void capi_dump_cert(CAPI_CTX *ctx, BIO *out, PCCERT_CONTEXT cert)
1176         {
1177         X509 *x;
1178         unsigned char *p;
1179         unsigned long flags = ctx->dump_flags;
1180         if (flags & CAPI_DMP_FNAME)
1181                 {
1182                 char *fname;
1183                 fname = capi_cert_get_fname(ctx, cert);
1184                 if (fname)
1185                         {
1186                         BIO_printf(out, "  Friendly Name \"%s\"\n", fname);
1187                         OPENSSL_free(fname);
1188                         }
1189                 else
1190                         BIO_printf(out, "  <No Friendly Name>\n");
1191                 }
1192
1193         p = cert->pbCertEncoded;
1194         x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1195         if (!x)
1196                 BIO_printf(out, "  <Can't parse certificate>\n");
1197         if (flags & CAPI_DMP_SUMMARY)
1198                 {
1199                 BIO_printf(out, "  Subject: ");
1200                 X509_NAME_print_ex(out, X509_get_subject_name(x), 0, XN_FLAG_ONELINE);
1201                 BIO_printf(out, "\n  Issuer: ");
1202                 X509_NAME_print_ex(out, X509_get_issuer_name(x), 0, XN_FLAG_ONELINE);
1203                 BIO_printf(out, "\n");
1204                 }
1205         if (flags & CAPI_DMP_FULL)
1206                 X509_print_ex(out, x, XN_FLAG_ONELINE,0);
1207
1208         if (flags & CAPI_DMP_PKEYINFO)
1209                 {
1210                 CRYPT_KEY_PROV_INFO *pinfo;
1211                 pinfo = capi_get_prov_info(ctx, cert);
1212                 capi_dump_prov_info(ctx, out, pinfo);
1213                 if (pinfo)
1214                         OPENSSL_free(pinfo);
1215                 }
1216
1217         if (flags & CAPI_DMP_PEM)
1218                 PEM_write_bio_X509(out, x);
1219         X509_free(x);
1220         }
1221
1222 HCERTSTORE capi_open_store(CAPI_CTX *ctx, char *storename)
1223         {
1224         HCERTSTORE hstore;
1225
1226         if (!storename)
1227                 storename = ctx->storename;
1228         if (!storename)
1229                 storename = "MY";
1230         CAPI_trace(ctx, "Opening certificate store %s\n", storename);
1231
1232         hstore = CertOpenSystemStore(0, storename);
1233         if (!hstore)
1234                 {
1235                 CAPIerr(CAPI_F_CAPI_OPEN_STORE, CAPI_R_ERROR_OPENING_STORE);
1236                 capi_addlasterror();
1237                 }
1238         return hstore;
1239         }
1240
1241 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *id)
1242         {
1243         char *storename;
1244         int idx;
1245         int ret = 1;
1246         HCERTSTORE hstore;
1247         PCCERT_CONTEXT cert = NULL;
1248
1249         storename = ctx->storename;
1250         if (!storename)
1251                 storename = "MY";
1252         CAPI_trace(ctx, "Listing certs for store %s\n", storename);
1253
1254         hstore = capi_open_store(ctx, storename);
1255         if (!hstore)
1256                 return 0;
1257         if (id)
1258                 {
1259                 cert = capi_find_cert(ctx, id, hstore);
1260                 if (!cert)
1261                         {
1262                         ret = 0;
1263                         goto err;
1264                         }
1265                 capi_dump_cert(ctx, out, cert);
1266                 CertFreeCertificateContext(cert);
1267                 }
1268         else
1269                 {
1270                 for(idx = 0;;idx++)
1271                         {
1272                         LPWSTR fname = NULL;
1273                         cert = CertEnumCertificatesInStore(hstore, cert);
1274                         if (!cert)
1275                                 break;
1276                         BIO_printf(out, "Certificate %d\n", idx);
1277                         capi_dump_cert(ctx, out, cert);
1278                         }
1279                 }
1280         err:
1281         CertCloseStore(hstore, 0);
1282         return ret;
1283         }
1284
1285 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore)
1286         {
1287         PCCERT_CONTEXT cert = NULL;
1288         char *fname = NULL;
1289         int match;
1290         switch(ctx->lookup_method)
1291                 {
1292                 case CAPI_LU_SUBSTR:
1293                         return CertFindCertificateInStore(hstore,
1294                                         X509_ASN_ENCODING, 0,
1295                                         CERT_FIND_SUBJECT_STR_A, id, NULL);
1296                 case CAPI_LU_FNAME:
1297                         for(;;)
1298                                 {
1299                                 cert = CertEnumCertificatesInStore(hstore, cert);
1300                                 if (!cert)
1301                                         return NULL;
1302                                 fname = capi_cert_get_fname(ctx, cert);
1303                                 if (fname)
1304                                         {
1305                                         if (strcmp(fname, id))
1306                                                 match = 0;
1307                                         else
1308                                                 match = 1;
1309                                         OPENSSL_free(fname);
1310                                         if (match)
1311                                                 return cert;
1312                                         }
1313                                 }
1314                 default:
1315                         return NULL;
1316                 }
1317         }
1318
1319 static CAPI_KEY *capi_get_key(CAPI_CTX *ctx, const char *contname, char *provname, DWORD ptype, DWORD keyspec)
1320         {
1321         CAPI_KEY *key;
1322         key = OPENSSL_malloc(sizeof(CAPI_KEY));
1323         CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n",
1324                                                 contname, provname, ptype);
1325         if (!CryptAcquireContext(&key->hprov, contname, provname, ptype, 0))
1326                 {
1327                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1328                 capi_addlasterror();
1329                 goto err;
1330                 }
1331         if (!CryptGetUserKey(key->hprov, keyspec, &key->key))
1332                 {
1333                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_GETUSERKEY_ERROR);
1334                 capi_addlasterror();
1335                 CryptReleaseContext(key->hprov, 0);
1336                 goto err;
1337                 }
1338         key->keyspec = keyspec;
1339         key->pcert = NULL;
1340         return key;
1341
1342         err:
1343         OPENSSL_free(key);
1344         return NULL;
1345         }
1346
1347 static CAPI_KEY *capi_get_cert_key(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1348         {
1349         CAPI_KEY *key;
1350         CRYPT_KEY_PROV_INFO *pinfo = NULL;
1351         char *provname = NULL, *contname = NULL;
1352         pinfo = capi_get_prov_info(ctx, cert);
1353         if (!pinfo)
1354                 goto err;
1355         provname = wide_to_asc(pinfo->pwszProvName);
1356         contname = wide_to_asc(pinfo->pwszContainerName);
1357         if (!provname || !contname)
1358                 return 0;
1359
1360         key = capi_get_key(ctx, contname, provname,
1361                                 pinfo->dwProvType, pinfo->dwKeySpec);
1362
1363         err:
1364         if (pinfo)
1365                 OPENSSL_free(pinfo);
1366         if (provname)
1367                 OPENSSL_free(provname);
1368         if (contname)
1369                 OPENSSL_free(contname);
1370         return key;
1371         }
1372
1373 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id)
1374         {
1375         PCCERT_CONTEXT cert;
1376         HCERTSTORE hstore;
1377         CAPI_KEY *key = NULL;
1378         switch (ctx->lookup_method)
1379                 {
1380                 case CAPI_LU_SUBSTR:
1381                 case CAPI_LU_FNAME:
1382                 hstore = capi_open_store(ctx, NULL);
1383                 if (!hstore)
1384                         return NULL;
1385                 cert = capi_find_cert(ctx, id, hstore);
1386                 if (cert)
1387                         {
1388                         key = capi_get_cert_key(ctx, cert);
1389                         CertFreeCertificateContext(cert);
1390                         }
1391                 CertCloseStore(hstore, 0);
1392                 break;
1393
1394                 case CAPI_LU_CONTNAME:
1395                 key = capi_get_key(ctx, id, ctx->cspname, ctx->csptype,
1396                                                         ctx->keytype);
1397                 break;
1398                 }
1399
1400         return key;
1401         }
1402
1403 void capi_free_key(CAPI_KEY *key)
1404         {
1405         if (!key)
1406                 return;
1407         CryptDestroyKey(key->key);
1408         CryptReleaseContext(key->hprov, 0);
1409         if (key->pcert)
1410                 CertFreeCertificateContext(key->pcert);
1411         OPENSSL_free(key);
1412         }
1413
1414
1415 /* Initialize a CAPI_CTX structure */
1416
1417 static CAPI_CTX *capi_ctx_new()
1418         {
1419         CAPI_CTX *ctx;
1420         ctx = OPENSSL_malloc(sizeof(CAPI_CTX));
1421         if (!ctx)
1422                 {
1423                 CAPIerr(CAPI_F_CAPI_CTX_NEW, ERR_R_MALLOC_FAILURE);
1424                 return NULL;
1425                 }
1426         ctx->cspname = NULL;
1427         ctx->csptype = PROV_RSA_FULL;
1428         ctx->dump_flags = CAPI_DMP_SUMMARY|CAPI_DMP_FNAME;
1429         ctx->keytype = AT_KEYEXCHANGE;
1430         ctx->storename = NULL;
1431         ctx->ssl_client_store = NULL;
1432         ctx->lookup_method = CAPI_LU_SUBSTR;
1433         ctx->debug_level = 0;
1434         ctx->debug_file = NULL;
1435         return ctx;
1436         }
1437
1438 static void capi_ctx_free(CAPI_CTX *ctx)
1439         {
1440         CAPI_trace(ctx, "Calling capi_ctx_free with %lx\n", ctx);
1441         if (!ctx)
1442                 return;
1443         if (ctx->cspname)
1444                 OPENSSL_free(ctx->cspname);
1445         if (ctx->debug_file)
1446                 OPENSSL_free(ctx->debug_file);
1447         if (ctx->storename)
1448                 OPENSSL_free(ctx->storename);
1449         if (ctx->ssl_client_store)
1450                 OPENSSL_free(ctx->ssl_client_store);
1451         OPENSSL_free(ctx);
1452         }
1453
1454 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check)
1455         {
1456         CAPI_trace(ctx, "capi_ctx_set_provname, name=%s, type=%d\n", pname, type);
1457         if (check)
1458                 {
1459                 HCRYPTPROV hprov;
1460                 if (!CryptAcquireContext(&hprov, NULL, pname, type,
1461                                                 CRYPT_VERIFYCONTEXT))
1462                         {
1463                         CAPIerr(CAPI_F_CAPI_CTX_SET_PROVNAME, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1464                         capi_addlasterror();
1465                         return 0;
1466                         }
1467                 CryptReleaseContext(hprov, 0);
1468                 }
1469         ctx->cspname = BUF_strdup(pname);
1470         ctx->csptype = type;
1471         return 1;
1472         }
1473
1474 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx)
1475         {
1476         LPSTR pname;
1477         DWORD type;
1478         if (capi_get_provname(ctx, &pname, &type, idx) != 1)
1479                 return 0;
1480         return capi_ctx_set_provname(ctx, pname, type, 0);
1481         }
1482
1483 static int cert_issuer_match(STACK_OF(X509_NAME) *ca_dn, X509 *x)
1484         {
1485         int i;
1486         X509_NAME *nm;
1487         /* Special case: empty list: match anything */
1488         if (sk_X509_NAME_num(ca_dn) <= 0)
1489                 return 1;
1490         for (i = 0; i < sk_X509_NAME_num(ca_dn); i++)
1491                 {
1492                 nm = sk_X509_NAME_value(ca_dn, i);
1493                 if (!X509_NAME_cmp(nm, X509_get_issuer_name(x)))
1494                                 return 1;
1495                 }
1496         return 0;
1497         }
1498
1499
1500
1501 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
1502         STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey,
1503         STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data)
1504         {
1505         STACK_OF(X509) *certs = NULL;
1506         X509 *x;
1507         char *storename;
1508         const char *p;
1509         int i, client_cert_idx;
1510         HCERTSTORE hstore;
1511         PCCERT_CONTEXT cert = NULL, excert = NULL;
1512         CAPI_CTX *ctx;
1513         CAPI_KEY *key;
1514         ctx = ENGINE_get_ex_data(e, capi_idx);
1515
1516         *pcert = NULL;
1517         *pkey = NULL;
1518
1519         storename = ctx->ssl_client_store;
1520         if (!storename)
1521                 storename = "MY";
1522
1523         hstore = capi_open_store(ctx, storename);
1524         if (!hstore)
1525                 return 0;
1526         /* Enumerate all certificates collect any matches */
1527         for(i = 0;;i++)
1528                 {
1529                 cert = CertEnumCertificatesInStore(hstore, cert);
1530                 if (!cert)
1531                         break;
1532                 p = cert->pbCertEncoded;
1533                 x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1534                 if (!x)
1535                         {
1536                         CAPI_trace(ctx, "Can't Parse Certificate %d\n", i);
1537                         continue;
1538                         }
1539                 if (cert_issuer_match(ca_dn, x))
1540                         {
1541                         key = capi_get_cert_key(ctx, cert);
1542                         if (!key)
1543                                 continue;
1544                         /* Match found: attach extra data to it so
1545                          * we can retrieve the key later.
1546                          */
1547                         excert = CertDuplicateCertificateContext(cert);
1548                         key->pcert = excert;
1549                         X509_set_ex_data(x, cert_capi_idx, key);
1550
1551                         if (!certs)
1552                                 certs = sk_X509_new_null();
1553
1554                         sk_X509_push(certs, x);
1555                         }
1556                 else
1557                         X509_free(x);
1558
1559                 }
1560
1561         if (cert)
1562                 CertFreeCertificateContext(cert);
1563         if (hstore)
1564                 CertCloseStore(hstore, 0);
1565
1566         if (!certs)
1567                 return 0;
1568
1569
1570         /* Select the appropriate certificate */
1571
1572         client_cert_idx = client_cert_select(e, ssl, certs);
1573
1574         /* Set the selected certificate and free the rest */
1575
1576         for(i = 0; i < sk_X509_num(certs); i++)
1577                 {
1578                 x = sk_X509_value(certs, i);
1579                 if (i == client_cert_idx)
1580                         *pcert = x;
1581                 else
1582                         {
1583                         key = X509_get_ex_data(x, cert_capi_idx);
1584                         capi_free_key(key);
1585                         X509_free(x);
1586                         }
1587                 }
1588
1589         sk_X509_free(certs);
1590
1591         if (!*pcert)
1592                 return 0;
1593
1594         /* Setup key for selected certificate */
1595
1596         key = X509_get_ex_data(*pcert, cert_capi_idx);
1597         *pkey = capi_get_pkey(e, key);
1598         X509_set_ex_data(*pcert, cert_capi_idx, NULL);
1599
1600         return 1;
1601
1602         }
1603
1604 #ifndef OPENSSL_CAPIENG_DIALOG
1605
1606 /* Simple client cert selection function: always select first */
1607
1608 static int client_cert_select(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1609         {
1610         return 0;
1611         }
1612
1613 #else
1614
1615 /* More complex cert selection function, using standard function
1616  * CryptUIDlgSelectCertificateFromStore() to produce a dialog box.
1617  */
1618
1619 #include <cryptuiapi.h>
1620
1621 static int client_cert_select(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1622         {
1623         X509 *x;
1624         HCERTSTORE dstore;
1625         PCCERT_CONTEXT cert;
1626         CAPI_CTX *ctx;
1627         CAPI_KEY *key;
1628         int i, idx = -1;
1629         ctx = ENGINE_get_ex_data(e, capi_idx);
1630         /* Create an in memory store of certificates */
1631         dstore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
1632                                         CERT_STORE_CREATE_NEW_FLAG, NULL);
1633         if (!dstore)
1634                 {
1635                 CAPIerr(CAPI_F_CLIENT_CERT_SELECT, CAPI_R_ERROR_CREATING_STORE);
1636                 capi_addlasterror();
1637                 goto err;
1638                 }
1639         /* Add all certificates to store */
1640         for(i = 0; i < sk_X509_num(certs); i++)
1641                 {
1642                 x = sk_X509_value(certs, i);
1643                 key = X509_get_ex_data(x, cert_capi_idx);
1644
1645                 if (!CertAddCertificateContextToStore(dstore, key->pcert,
1646                                                 CERT_STORE_ADD_NEW, NULL))
1647                         {
1648                         CAPIerr(CAPI_F_CLIENT_CERT_SELECT, CAPI_R_ERROR_ADDING_CERT);
1649                         capi_addlasterror();
1650                         goto err;
1651                         }
1652
1653                 }
1654         /* Call dialog to select one */
1655         cert = CryptUIDlgSelectCertificateFromStore(dstore, NULL,NULL, NULL,
1656                                                         0, 0, NULL);
1657
1658         /* Find matching cert from list */
1659         if (cert)
1660                 {
1661                 for(i = 0; i < sk_X509_num(certs); i++)
1662                         {
1663                         x = sk_X509_value(certs, i);
1664                         key = X509_get_ex_data(x, cert_capi_idx);
1665                         if (CertCompareCertificate(
1666                                 X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
1667                                         cert->pCertInfo,
1668                                         key->pcert->pCertInfo))
1669                                 {
1670                                 idx = i;
1671                                 break;
1672                                 }
1673                         }
1674                 }
1675
1676         err:
1677         if (dstore)
1678                 CertCloseStore(dstore, 0);
1679         return idx;
1680
1681         }
1682 #endif
1683
1684 #endif
1685 #endif