engines/e_capi.c

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