crypto/openssl/engines/e_capi.c

   1 /* engines/e_capi.c */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   3  * project.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  */
  53
  54
  55 #include <stdio.h>
  56 #include <string.h>
  57 #include <openssl/crypto.h>
  58 #include <openssl/buffer.h>
  59 #include <openssl/bn.h>
  60
  61 #ifdef OPENSSL_SYS_WIN32
  62 #ifndef OPENSSL_NO_CAPIENG
  63
  64 #include <openssl/rsa.h>
  65
  66 #include <windows.h>
  67
  68 #ifndef _WIN32_WINNT
  69 #define _WIN32_WINNT 0x0400
  70 #endif
  71
  72 #include <wincrypt.h>
  73
  74 #undef X509_EXTENSIONS
  75 #undef X509_CERT_PAIR
  76
  77 /* Definitions which may be missing from earlier version of headers */
  78 #ifndef CERT_STORE_OPEN_EXISTING_FLAG
  79 #define CERT_STORE_OPEN_EXISTING_FLAG                   0x00004000
  80 #endif
  81
  82 #ifndef CERT_STORE_CREATE_NEW_FLAG
  83 #define CERT_STORE_CREATE_NEW_FLAG                      0x00002000
  84 #endif
  85
  86 #ifndef CERT_SYSTEM_STORE_CURRENT_USER
  87 #define CERT_SYSTEM_STORE_CURRENT_USER                  0x00010000
  88 #endif
  89
  90 #include <openssl/engine.h>
  91 #include <openssl/pem.h>
  92 #include <openssl/x509v3.h>
  93
  94 #include "e_capi_err.h"
  95 #include "e_capi_err.c"
  96
  97
  98 static const char *engine_capi_id = "capi";
  99 static const char *engine_capi_name = "CryptoAPI ENGINE";
 100
 101 typedef struct CAPI_CTX_st CAPI_CTX;
 102 typedef struct CAPI_KEY_st CAPI_KEY;
 103
 104 static void capi_addlasterror(void);
 105 static void capi_adderror(DWORD err);
 106
 107 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...);
 108
 109 static int capi_list_providers(CAPI_CTX *ctx, BIO *out);
 110 static int capi_list_containers(CAPI_CTX *ctx, BIO *out);
 111 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *storename);
 112 void capi_free_key(CAPI_KEY *key);
 113
 114 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore);
 115
 116 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id);
 117
 118 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
 119         UI_METHOD *ui_method, void *callback_data);
 120 static int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 121              unsigned char *sigret, unsigned int *siglen, const RSA *rsa);
 122 static int capi_rsa_priv_enc(int flen, const unsigned char *from,
 123                 unsigned char *to, RSA *rsa, int padding);
 124 static int capi_rsa_priv_dec(int flen, const unsigned char *from,
 125                 unsigned char *to, RSA *rsa, int padding);
 126 static int capi_rsa_free(RSA *rsa);
 127
 128 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
 129                                                         DSA *dsa);
 130 static int capi_dsa_free(DSA *dsa);
 131
 132 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
 133         STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey,
 134         STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data);
 135
 136 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
 137 #ifdef OPENSSL_CAPIENG_DIALOG
 138 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
 139 #endif
 140
 141 typedef PCCERT_CONTEXT (WINAPI *CERTDLG)(HCERTSTORE, HWND, LPCWSTR,
 142                                                 LPCWSTR, DWORD, DWORD,
 143                                                 void *);
 144 typedef HWND (WINAPI *GETCONSWIN)(void);
 145
 146 /* This structure contains CAPI ENGINE specific data:
 147  * it contains various global options and affects how
 148  * other functions behave.
 149  */
 150
 151 #define CAPI_DBG_TRACE  2
 152 #define CAPI_DBG_ERROR  1
 153
 154 struct CAPI_CTX_st {
 155         int debug_level;
 156         char *debug_file;
 157         /* Parameters to use for container lookup */
 158         DWORD keytype;
 159         LPSTR cspname;
 160         DWORD csptype;
 161         /* Certificate store name to use */
 162         LPSTR storename;
 163         LPSTR ssl_client_store;
 164         /* System store flags */
 165         DWORD store_flags;
 166
 167 /* Lookup string meanings in load_private_key */
 168 /* Substring of subject: uses "storename" */
 169 #define CAPI_LU_SUBSTR          1
 170 /* Friendly name: uses storename */
 171 #define CAPI_LU_FNAME           2
 172 /* Container name: uses cspname, keytype */
 173 #define CAPI_LU_CONTNAME        3
 174         int lookup_method;
 175 /* Info to dump with dumpcerts option */
 176 /* Issuer and serial name strings */
 177 #define CAPI_DMP_SUMMARY        0x1
 178 /* Friendly name */
 179 #define CAPI_DMP_FNAME          0x2
 180 /* Full X509_print dump */
 181 #define CAPI_DMP_FULL           0x4
 182 /* Dump PEM format certificate */
 183 #define CAPI_DMP_PEM            0x8
 184 /* Dump pseudo key (if possible) */
 185 #define CAPI_DMP_PSKEY          0x10
 186 /* Dump key info (if possible) */
 187 #define CAPI_DMP_PKEYINFO       0x20
 188
 189         DWORD dump_flags;
 190         int (*client_cert_select)(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
 191
 192         CERTDLG certselectdlg;
 193         GETCONSWIN getconswindow;
 194 };
 195
 196
 197 static CAPI_CTX *capi_ctx_new();
 198 static void capi_ctx_free(CAPI_CTX *ctx);
 199 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check);
 200 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx);
 201
 202 #define CAPI_CMD_LIST_CERTS             ENGINE_CMD_BASE
 203 #define CAPI_CMD_LOOKUP_CERT            (ENGINE_CMD_BASE + 1)
 204 #define CAPI_CMD_DEBUG_LEVEL            (ENGINE_CMD_BASE + 2)
 205 #define CAPI_CMD_DEBUG_FILE             (ENGINE_CMD_BASE + 3)
 206 #define CAPI_CMD_KEYTYPE                (ENGINE_CMD_BASE + 4)
 207 #define CAPI_CMD_LIST_CSPS              (ENGINE_CMD_BASE + 5)
 208 #define CAPI_CMD_SET_CSP_IDX            (ENGINE_CMD_BASE + 6)
 209 #define CAPI_CMD_SET_CSP_NAME           (ENGINE_CMD_BASE + 7)
 210 #define CAPI_CMD_SET_CSP_TYPE           (ENGINE_CMD_BASE + 8)
 211 #define CAPI_CMD_LIST_CONTAINERS        (ENGINE_CMD_BASE + 9)
 212 #define CAPI_CMD_LIST_OPTIONS           (ENGINE_CMD_BASE + 10)
 213 #define CAPI_CMD_LOOKUP_METHOD          (ENGINE_CMD_BASE + 11)
 214 #define CAPI_CMD_STORE_NAME             (ENGINE_CMD_BASE + 12)
 215 #define CAPI_CMD_STORE_FLAGS            (ENGINE_CMD_BASE + 13)
 216
 217 static const ENGINE_CMD_DEFN capi_cmd_defns[] = {
 218         {CAPI_CMD_LIST_CERTS,
 219                 "list_certs",
 220                 "List all certificates in store",
 221                 ENGINE_CMD_FLAG_NO_INPUT},
 222         {CAPI_CMD_LOOKUP_CERT,
 223                 "lookup_cert",
 224                 "Lookup and output certificates",
 225                 ENGINE_CMD_FLAG_STRING},
 226         {CAPI_CMD_DEBUG_LEVEL,
 227                 "debug_level",
 228                 "debug level (1=errors, 2=trace)",
 229                 ENGINE_CMD_FLAG_NUMERIC},
 230         {CAPI_CMD_DEBUG_FILE,
 231                 "debug_file",
 232                 "debugging filename)",
 233                 ENGINE_CMD_FLAG_STRING},
 234         {CAPI_CMD_KEYTYPE,
 235                 "key_type",
 236                 "Key type: 1=AT_KEYEXCHANGE (default), 2=AT_SIGNATURE",
 237                 ENGINE_CMD_FLAG_NUMERIC},
 238         {CAPI_CMD_LIST_CSPS,
 239                 "list_csps",
 240                 "List all CSPs",
 241                 ENGINE_CMD_FLAG_NO_INPUT},
 242         {CAPI_CMD_SET_CSP_IDX,
 243                 "csp_idx",
 244                 "Set CSP by index",
 245                 ENGINE_CMD_FLAG_NUMERIC},
 246         {CAPI_CMD_SET_CSP_NAME,
 247                 "csp_name",
 248                 "Set CSP name, (default CSP used if not specified)",
 249                 ENGINE_CMD_FLAG_STRING},
 250         {CAPI_CMD_SET_CSP_TYPE,
 251                 "csp_type",
 252                 "Set CSP type, (default RSA_PROV_FULL)",
 253                 ENGINE_CMD_FLAG_NUMERIC},
 254         {CAPI_CMD_LIST_CONTAINERS,
 255                 "list_containers",
 256                 "list container names",
 257                 ENGINE_CMD_FLAG_NO_INPUT},
 258         {CAPI_CMD_LIST_OPTIONS,
 259                 "list_options",
 260                 "Set list options (1=summary,2=friendly name, 4=full printout, 8=PEM output, 16=XXX, "
 261                 "32=private key info)",
 262                 ENGINE_CMD_FLAG_NUMERIC},
 263         {CAPI_CMD_LOOKUP_METHOD,
 264                 "lookup_method",
 265                 "Set key lookup method (1=substring, 2=friendlyname, 3=container name)",
 266                 ENGINE_CMD_FLAG_NUMERIC},
 267         {CAPI_CMD_STORE_NAME,
 268                 "store_name",
 269                 "certificate store name, default \"MY\"",
 270                 ENGINE_CMD_FLAG_STRING},
 271         {CAPI_CMD_STORE_FLAGS,
 272                 "store_flags",
 273                 "Certificate store flags: 1 = system store",
 274                 ENGINE_CMD_FLAG_NUMERIC},
 275
 276         {0, NULL, NULL, 0}
 277         };
 278
 279 static int capi_idx = -1;
 280 static int rsa_capi_idx = -1;
 281 static int dsa_capi_idx = -1;
 282 static int cert_capi_idx = -1;
 283
 284 static int capi_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
 285         {
 286         int ret = 1;
 287         CAPI_CTX *ctx;
 288         BIO *out;
 289         if (capi_idx == -1)
 290                 {
 291                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_ENGINE_NOT_INITIALIZED);
 292                 return 0;
 293                 }
 294         ctx = ENGINE_get_ex_data(e, capi_idx);
 295         out = BIO_new_fp(stdout, BIO_NOCLOSE);
 296         switch (cmd)
 297                 {
 298                 case CAPI_CMD_LIST_CSPS:
 299                 ret = capi_list_providers(ctx, out);
 300                 break;
 301
 302                 case CAPI_CMD_LIST_CERTS:
 303                 ret = capi_list_certs(ctx, out, NULL);
 304                 break;
 305
 306                 case CAPI_CMD_LOOKUP_CERT:
 307                 ret = capi_list_certs(ctx, out, p);
 308                 break;
 309
 310                 case CAPI_CMD_LIST_CONTAINERS:
 311                 ret = capi_list_containers(ctx, out);
 312                 break;
 313
 314                 case CAPI_CMD_STORE_NAME:
 315                 if (ctx->storename)
 316                         OPENSSL_free(ctx->storename);
 317                 ctx->storename = BUF_strdup(p);
 318                 CAPI_trace(ctx, "Setting store name to %s\n", p);
 319                 break;
 320
 321                 case CAPI_CMD_STORE_FLAGS:
 322                 if (i & 1)
 323                         {
 324                         ctx->store_flags |= CERT_SYSTEM_STORE_LOCAL_MACHINE;
 325                         ctx->store_flags &= ~CERT_SYSTEM_STORE_CURRENT_USER;
 326                         }
 327                 else
 328                         {
 329                         ctx->store_flags |= CERT_SYSTEM_STORE_CURRENT_USER;
 330                         ctx->store_flags &= ~CERT_SYSTEM_STORE_LOCAL_MACHINE;
 331                         }
 332                 CAPI_trace(ctx, "Setting flags to %d\n", i);
 333                 break;
 334
 335                 case CAPI_CMD_DEBUG_LEVEL:
 336                 ctx->debug_level = (int)i;
 337                 CAPI_trace(ctx, "Setting debug level to %d\n", ctx->debug_level);
 338                 break;
 339
 340                 case CAPI_CMD_DEBUG_FILE:
 341                 ctx->debug_file = BUF_strdup(p);
 342                 CAPI_trace(ctx, "Setting debug file to %s\n", ctx->debug_file);
 343                 break;
 344
 345                 case CAPI_CMD_KEYTYPE:
 346                 ctx->keytype = i;
 347                 CAPI_trace(ctx, "Setting key type to %d\n", ctx->keytype);
 348                 break;
 349
 350                 case CAPI_CMD_SET_CSP_IDX:
 351                 ret = capi_ctx_set_provname_idx(ctx, i);
 352                 break;
 353
 354                 case CAPI_CMD_LIST_OPTIONS:
 355                 ctx->dump_flags = i;
 356                 break;
 357
 358                 case CAPI_CMD_LOOKUP_METHOD:
 359                 if (i < 1 || i > 3)
 360                         {
 361                         CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_INVALID_LOOKUP_METHOD);
 362                         return 0;
 363                         }
 364                 ctx->lookup_method = i;
 365                 break;
 366
 367                 case CAPI_CMD_SET_CSP_NAME:
 368                 ret = capi_ctx_set_provname(ctx, p, ctx->csptype, 1);
 369                 break;
 370
 371                 case CAPI_CMD_SET_CSP_TYPE:
 372                 ctx->csptype = i;
 373                 break;
 374
 375                 default:
 376                 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_UNKNOWN_COMMAND);
 377                 ret = 0;
 378         }
 379
 380         BIO_free(out);
 381         return ret;
 382
 383         }
 384
 385 static RSA_METHOD capi_rsa_method =
 386         {
 387         "CryptoAPI RSA method",
 388         0,                              /* pub_enc */
 389         0,                              /* pub_dec */
 390         capi_rsa_priv_enc,              /* priv_enc */
 391         capi_rsa_priv_dec,              /* priv_dec */
 392         0,                              /* rsa_mod_exp */
 393         0,                              /* bn_mod_exp */
 394         0,                              /* init */
 395         capi_rsa_free,                  /* finish */
 396         RSA_FLAG_SIGN_VER,              /* flags */
 397         NULL,                           /* app_data */
 398         capi_rsa_sign,                  /* rsa_sign */
 399         0                               /* rsa_verify */
 400         };
 401
 402 static DSA_METHOD capi_dsa_method =
 403         {
 404         "CryptoAPI DSA method",
 405         capi_dsa_do_sign,               /* dsa_do_sign */
 406         0,                              /* dsa_sign_setup */
 407         0,                              /* dsa_do_verify */
 408         0,                              /* dsa_mod_exp */
 409         0,                              /* bn_mod_exp */
 410         0,                              /* init */
 411         capi_dsa_free,                  /* finish */
 412         0,                              /* flags */
 413         NULL,                           /* app_data */
 414         0,                              /* dsa_paramgen */
 415         0                               /* dsa_keygen */
 416         };
 417
 418 static int capi_init(ENGINE *e)
 419         {
 420         CAPI_CTX *ctx;
 421         const RSA_METHOD *ossl_rsa_meth;
 422         const DSA_METHOD *ossl_dsa_meth;
 423         capi_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, 0);
 424         cert_capi_idx = X509_get_ex_new_index(0, NULL, NULL, NULL, 0);
 425
 426         ctx = capi_ctx_new();
 427         if (!ctx || (capi_idx < 0))
 428                 goto memerr;
 429
 430         ENGINE_set_ex_data(e, capi_idx, ctx);
 431         /* Setup RSA_METHOD */
 432         rsa_capi_idx = RSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
 433         ossl_rsa_meth = RSA_PKCS1_SSLeay();
 434         capi_rsa_method.rsa_pub_enc = ossl_rsa_meth->rsa_pub_enc;
 435         capi_rsa_method.rsa_pub_dec = ossl_rsa_meth->rsa_pub_dec;
 436         capi_rsa_method.rsa_mod_exp = ossl_rsa_meth->rsa_mod_exp;
 437         capi_rsa_method.bn_mod_exp = ossl_rsa_meth->bn_mod_exp;
 438
 439         /* Setup DSA Method */
 440         dsa_capi_idx = DSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
 441         ossl_dsa_meth = DSA_OpenSSL();
 442         capi_dsa_method.dsa_do_verify = ossl_dsa_meth->dsa_do_verify;
 443         capi_dsa_method.dsa_mod_exp = ossl_dsa_meth->dsa_mod_exp;
 444         capi_dsa_method.bn_mod_exp = ossl_dsa_meth->bn_mod_exp;
 445
 446 #ifdef OPENSSL_CAPIENG_DIALOG
 447         {
 448         HMODULE cryptui = LoadLibrary(TEXT("CRYPTUI.DLL"));
 449         HMODULE kernel = GetModuleHandle(TEXT("KERNEL32.DLL"));
 450         if (cryptui)
 451                 ctx->certselectdlg = (CERTDLG)GetProcAddress(cryptui, "CryptUIDlgSelectCertificateFromStore");
 452         if (kernel)
 453                 ctx->getconswindow = (GETCONSWIN)GetProcAddress(kernel, "GetConsoleWindow");
 454         if (cryptui && !OPENSSL_isservice())
 455                 ctx->client_cert_select = cert_select_dialog;
 456         }
 457 #endif
 458
 459
 460         return 1;
 461
 462         memerr:
 463         CAPIerr(CAPI_F_CAPI_INIT, ERR_R_MALLOC_FAILURE);
 464         return 0;
 465
 466         return 1;
 467         }
 468
 469 static int capi_destroy(ENGINE *e)
 470         {
 471         ERR_unload_CAPI_strings();
 472         return 1;
 473         }
 474
 475 static int capi_finish(ENGINE *e)
 476         {
 477         CAPI_CTX *ctx;
 478         ctx = ENGINE_get_ex_data(e, capi_idx);
 479         capi_ctx_free(ctx);
 480         ENGINE_set_ex_data(e, capi_idx, NULL);
 481         return 1;
 482         }
 483
 484
 485 /* CryptoAPI key application data. This contains
 486  * a handle to the private key container (for sign operations)
 487  * and a handle to the key (for decrypt operations).
 488  */
 489
 490 struct CAPI_KEY_st
 491         {
 492         /* Associated certificate context (if any) */
 493         PCCERT_CONTEXT pcert;
 494         HCRYPTPROV hprov;
 495         HCRYPTKEY key;
 496         DWORD keyspec;
 497         };
 498
 499 static int bind_capi(ENGINE *e)
 500         {
 501         if (!ENGINE_set_id(e, engine_capi_id)
 502                 || !ENGINE_set_name(e, engine_capi_name)
 503                 || !ENGINE_set_init_function(e, capi_init)
 504                 || !ENGINE_set_finish_function(e, capi_finish)
 505                 || !ENGINE_set_destroy_function(e, capi_destroy)
 506                 || !ENGINE_set_RSA(e, &capi_rsa_method)
 507                 || !ENGINE_set_DSA(e, &capi_dsa_method)
 508                 || !ENGINE_set_load_privkey_function(e, capi_load_privkey)
 509                 || !ENGINE_set_load_ssl_client_cert_function(e,
 510                                                 capi_load_ssl_client_cert)
 511                 || !ENGINE_set_cmd_defns(e, capi_cmd_defns)
 512                 || !ENGINE_set_ctrl_function(e, capi_ctrl))
 513                         return 0;
 514         ERR_load_CAPI_strings();
 515
 516         return 1;
 517
 518         }
 519
 520 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
 521 static int bind_helper(ENGINE *e, const char *id)
 522         {
 523         if(id && (strcmp(id, engine_capi_id) != 0))
 524                 return 0;
 525         if(!bind_capi(e))
 526                 return 0;
 527         return 1;
 528         }
 529 IMPLEMENT_DYNAMIC_CHECK_FN()
 530 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
 531 #else
 532 static ENGINE *engine_capi(void)
 533         {
 534         ENGINE *ret = ENGINE_new();
 535         if(!ret)
 536                 return NULL;
 537         if(!bind_capi(ret))
 538                 {
 539                 ENGINE_free(ret);
 540                 return NULL;
 541                 }
 542         return ret;
 543         }
 544
 545 void ENGINE_load_capi(void)
 546         {
 547         /* Copied from eng_[openssl|dyn].c */
 548         ENGINE *toadd = engine_capi();
 549         if(!toadd) return;
 550         ENGINE_add(toadd);
 551         ENGINE_free(toadd);
 552         ERR_clear_error();
 553         }
 554 #endif
 555
 556
 557 static int lend_tobn(BIGNUM *bn, unsigned char *bin, int binlen)
 558         {
 559         int i;
 560         /* Reverse buffer in place: since this is a keyblob structure
 561          * that will be freed up after conversion anyway it doesn't
 562          * matter if we change it.
 563          */
 564         for(i = 0; i < binlen / 2; i++)
 565                 {
 566                 unsigned char c;
 567                 c = bin[i];
 568                 bin[i] = bin[binlen - i - 1];
 569                 bin[binlen - i - 1] = c;
 570                 }
 571
 572         if (!BN_bin2bn(bin, binlen, bn))
 573                 return 0;
 574         return 1;
 575         }
 576
 577 /* Given a CAPI_KEY get an EVP_PKEY structure */
 578
 579 static EVP_PKEY *capi_get_pkey(ENGINE *eng, CAPI_KEY *key)
 580         {
 581         unsigned char *pubkey = NULL;
 582         DWORD len;
 583         BLOBHEADER *bh;
 584         RSA *rkey = NULL;
 585         DSA *dkey = NULL;
 586         EVP_PKEY *ret = NULL;
 587         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, NULL, &len))
 588                 {
 589                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_LENGTH_ERROR);
 590                 capi_addlasterror();
 591                 return NULL;
 592                 }
 593
 594         pubkey = OPENSSL_malloc(len);
 595
 596         if (!pubkey)
 597                 goto memerr;
 598
 599         if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, pubkey, &len))
 600                 {
 601                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_ERROR);
 602                 capi_addlasterror();
 603                 goto err;
 604                 }
 605
 606         bh = (BLOBHEADER *)pubkey;
 607         if (bh->bType != PUBLICKEYBLOB)
 608                 {
 609                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_PUBLIC_KEY_BLOB);
 610                 goto err;
 611                 }
 612         if (bh->aiKeyAlg == CALG_RSA_SIGN || bh->aiKeyAlg == CALG_RSA_KEYX)
 613                 {
 614                 RSAPUBKEY *rp;
 615                 DWORD rsa_modlen;
 616                 unsigned char *rsa_modulus;
 617                 rp = (RSAPUBKEY *)(bh + 1);
 618                 if (rp->magic != 0x31415352)
 619                         {
 620                         char magstr[10];
 621                         BIO_snprintf(magstr, 10, "%lx", rp->magic);
 622                         CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_RSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
 623                         ERR_add_error_data(2, "magic=0x", magstr);
 624                         goto err;
 625                         }
 626                 rsa_modulus = (unsigned char *)(rp + 1);
 627                 rkey = RSA_new_method(eng);
 628                 if (!rkey)
 629                         goto memerr;
 630
 631                 rkey->e = BN_new();
 632                 rkey->n = BN_new();
 633
 634                 if (!rkey->e || !rkey->n)
 635                         goto memerr;
 636
 637                 if (!BN_set_word(rkey->e, rp->pubexp))
 638                         goto memerr;
 639
 640                 rsa_modlen = rp->bitlen / 8;
 641                 if (!lend_tobn(rkey->n, rsa_modulus, rsa_modlen))
 642                         goto memerr;
 643
 644                 RSA_set_ex_data(rkey, rsa_capi_idx, key);
 645
 646                 if (!(ret = EVP_PKEY_new()))
 647                         goto memerr;
 648
 649                 EVP_PKEY_assign_RSA(ret, rkey);
 650                 rkey = NULL;
 651
 652                 }
 653         else if (bh->aiKeyAlg == CALG_DSS_SIGN)
 654                 {
 655                 DSSPUBKEY *dp;
 656                 DWORD dsa_plen;
 657                 unsigned char *btmp;
 658                 dp = (DSSPUBKEY *)(bh + 1);
 659                 if (dp->magic != 0x31535344)
 660                         {
 661                         char magstr[10];
 662                         BIO_snprintf(magstr, 10, "%lx", dp->magic);
 663                         CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_DSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
 664                         ERR_add_error_data(2, "magic=0x", magstr);
 665                         goto err;
 666                         }
 667                 dsa_plen = dp->bitlen / 8;
 668                 btmp = (unsigned char *)(dp + 1);
 669                 dkey = DSA_new_method(eng);
 670                 if (!dkey)
 671                         goto memerr;
 672                 dkey->p = BN_new();
 673                 dkey->q = BN_new();
 674                 dkey->g = BN_new();
 675                 dkey->pub_key = BN_new();
 676                 if (!dkey->p || !dkey->q || !dkey->g || !dkey->pub_key)
 677                         goto memerr;
 678                 if (!lend_tobn(dkey->p, btmp, dsa_plen))
 679                         goto memerr;
 680                 btmp += dsa_plen;
 681                 if (!lend_tobn(dkey->q, btmp, 20))
 682                         goto memerr;
 683                 btmp += 20;
 684                 if (!lend_tobn(dkey->g, btmp, dsa_plen))
 685                         goto memerr;
 686                 btmp += dsa_plen;
 687                 if (!lend_tobn(dkey->pub_key, btmp, dsa_plen))
 688                         goto memerr;
 689                 btmp += dsa_plen;
 690
 691                 DSA_set_ex_data(dkey, dsa_capi_idx, key);
 692
 693                 if (!(ret = EVP_PKEY_new()))
 694                         goto memerr;
 695
 696                 EVP_PKEY_assign_DSA(ret, dkey);
 697                 dkey = NULL;
 698                 }
 699         else
 700                 {
 701                 char algstr[10];
 702                 BIO_snprintf(algstr, 10, "%lx", bh->aiKeyAlg);
 703                 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_UNSUPPORTED_PUBLIC_KEY_ALGORITHM);
 704                 ERR_add_error_data(2, "aiKeyAlg=0x", algstr);
 705                 goto err;
 706                 }
 707
 708
 709         err:
 710         if (pubkey)
 711                 OPENSSL_free(pubkey);
 712         if (!ret)
 713                 {
 714                 if (rkey)
 715                         RSA_free(rkey);
 716                 if (dkey)
 717                         DSA_free(dkey);
 718                 }
 719
 720         return ret;
 721
 722 memerr:
 723         CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_MALLOC_FAILURE);
 724         goto err;
 725
 726         }
 727
 728 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
 729         UI_METHOD *ui_method, void *callback_data)
 730         {
 731         CAPI_CTX *ctx;
 732         CAPI_KEY *key;
 733         EVP_PKEY *ret;
 734         ctx = ENGINE_get_ex_data(eng, capi_idx);
 735
 736         if (!ctx)
 737                 {
 738                 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_CANT_FIND_CAPI_CONTEXT);
 739                 return NULL;
 740                 }
 741
 742         key = capi_find_key(ctx, key_id);
 743
 744         if (!key)
 745                 return NULL;
 746
 747         ret = capi_get_pkey(eng, key);
 748
 749         if (!ret)
 750                 capi_free_key(key);
 751         return ret;
 752
 753         }
 754
 755 /* CryptoAPI RSA operations */
 756
 757 int capi_rsa_priv_enc(int flen, const unsigned char *from,
 758                 unsigned char *to, RSA *rsa, int padding)
 759         {
 760         CAPIerr(CAPI_F_CAPI_RSA_PRIV_ENC, CAPI_R_FUNCTION_NOT_SUPPORTED);
 761         return -1;
 762         }
 763
 764 int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 765              unsigned char *sigret, unsigned int *siglen, const RSA *rsa)
 766         {
 767         ALG_ID alg;
 768         HCRYPTHASH hash;
 769         DWORD slen;
 770         unsigned int i;
 771         int ret = -1;
 772         CAPI_KEY *capi_key;
 773         CAPI_CTX *ctx;
 774
 775         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 776
 777         CAPI_trace(ctx, "Called CAPI_rsa_sign()\n");
 778
 779         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 780         if (!capi_key)
 781                 {
 782                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_GET_KEY);
 783                 return -1;
 784                 }
 785 /* Convert the signature type to a CryptoAPI algorithm ID */
 786         switch(dtype)
 787                 {
 788         case NID_sha1:
 789                 alg = CALG_SHA1;
 790                 break;
 791
 792         case NID_md5:
 793                 alg = CALG_MD5;
 794                 break;
 795
 796         case NID_md5_sha1:
 797                 alg = CALG_SSL3_SHAMD5;
 798                 break;
 799         default:
 800                 {
 801                 char algstr[10];
 802                 BIO_snprintf(algstr, 10, "%lx", dtype);
 803                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_UNSUPPORTED_ALGORITHM_NID);
 804                 ERR_add_error_data(2, "NID=0x", algstr);
 805                 return -1;
 806                 }
 807         }
 808
 809
 810
 811 /* Create the hash object */
 812         if(!CryptCreateHash(capi_key->hprov, alg, 0, 0, &hash))
 813                 {
 814                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
 815                 capi_addlasterror();
 816                 return -1;
 817                 }
 818 /* Set the hash value to the value passed */
 819
 820         if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)m, 0))
 821                 {
 822                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
 823                 capi_addlasterror();
 824                 goto err;
 825                 }
 826
 827
 828 /* Finally sign it */
 829         slen = RSA_size(rsa);
 830         if(!CryptSignHashA(hash, capi_key->keyspec, NULL, 0, sigret, &slen))
 831                 {
 832                 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_ERROR_SIGNING_HASH);
 833                 capi_addlasterror();
 834                 goto err;
 835                 }
 836         else
 837                 {
 838                 ret = 1;
 839                 /* Inplace byte reversal of signature */
 840                 for(i = 0; i < slen / 2; i++)
 841                         {
 842                         unsigned char c;
 843                         c = sigret[i];
 844                         sigret[i] = sigret[slen - i - 1];
 845                         sigret[slen - i - 1] = c;
 846                         }
 847                 *siglen = slen;
 848                 }
 849
 850         /* Now cleanup */
 851
 852 err:
 853         CryptDestroyHash(hash);
 854
 855         return ret;
 856         }
 857
 858 int capi_rsa_priv_dec(int flen, const unsigned char *from,
 859                 unsigned char *to, RSA *rsa, int padding)
 860         {
 861         int i;
 862         unsigned char *tmpbuf;
 863         CAPI_KEY *capi_key;
 864         CAPI_CTX *ctx;
 865         ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
 866
 867         CAPI_trace(ctx, "Called capi_rsa_priv_dec()\n");
 868
 869
 870         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 871         if (!capi_key)
 872                 {
 873                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_CANT_GET_KEY);
 874                 return -1;
 875                 }
 876
 877         if(padding != RSA_PKCS1_PADDING)
 878                 {
 879                 char errstr[10];
 880                 BIO_snprintf(errstr, 10, "%d", padding);
 881                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_UNSUPPORTED_PADDING);
 882                 ERR_add_error_data(2, "padding=", errstr);
 883                 return -1;
 884                 }
 885
 886         /* Create temp reverse order version of input */
 887         if(!(tmpbuf = OPENSSL_malloc(flen)) )
 888                 {
 889                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, ERR_R_MALLOC_FAILURE);
 890                 return -1;
 891                 }
 892         for(i = 0; i < flen; i++)
 893                 tmpbuf[flen - i - 1] = from[i];
 894
 895         /* Finally decrypt it */
 896         if(!CryptDecrypt(capi_key->key, 0, TRUE, 0, tmpbuf, &flen))
 897                 {
 898                 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_DECRYPT_ERROR);
 899                 capi_addlasterror();
 900                 OPENSSL_free(tmpbuf);
 901                 return -1;
 902                 }
 903         else memcpy(to, tmpbuf, flen);
 904
 905         OPENSSL_free(tmpbuf);
 906
 907         return flen;
 908         }
 909
 910 static int capi_rsa_free(RSA *rsa)
 911         {
 912         CAPI_KEY *capi_key;
 913         capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
 914         capi_free_key(capi_key);
 915         RSA_set_ex_data(rsa, rsa_capi_idx, 0);
 916         return 1;
 917         }
 918
 919 /* CryptoAPI DSA operations */
 920
 921 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
 922                                                                 DSA *dsa)
 923         {
 924         HCRYPTHASH hash;
 925         DWORD slen;
 926         DSA_SIG *ret = NULL;
 927         CAPI_KEY *capi_key;
 928         CAPI_CTX *ctx;
 929         unsigned char csigbuf[40];
 930
 931         ctx = ENGINE_get_ex_data(dsa->engine, capi_idx);
 932
 933         CAPI_trace(ctx, "Called CAPI_dsa_do_sign()\n");
 934
 935         capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
 936
 937         if (!capi_key)
 938                 {
 939                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_GET_KEY);
 940                 return NULL;
 941                 }
 942
 943         if (dlen != 20)
 944                 {
 945                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_INVALID_DIGEST_LENGTH);
 946                 return NULL;
 947                 }
 948
 949         /* Create the hash object */
 950         if(!CryptCreateHash(capi_key->hprov, CALG_SHA1, 0, 0, &hash))
 951                 {
 952                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
 953                 capi_addlasterror();
 954                 return NULL;
 955                 }
 956
 957         /* Set the hash value to the value passed */
 958         if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)digest, 0))
 959                 {
 960                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
 961                 capi_addlasterror();
 962                 goto err;
 963                 }
 964
 965
 966         /* Finally sign it */
 967         slen = sizeof(csigbuf);
 968         if(!CryptSignHashA(hash, capi_key->keyspec, NULL, 0, csigbuf, &slen))
 969                 {
 970                 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_ERROR_SIGNING_HASH);
 971                 capi_addlasterror();
 972                 goto err;
 973                 }
 974         else
 975                 {
 976                 ret = DSA_SIG_new();
 977                 if (!ret)
 978                         goto err;
 979                 ret->r = BN_new();
 980                 ret->s = BN_new();
 981                 if (!ret->r || !ret->s)
 982                         goto err;
 983                 if (!lend_tobn(ret->r, csigbuf, 20)
 984                         || !lend_tobn(ret->s, csigbuf + 20, 20))
 985                         {
 986                         DSA_SIG_free(ret);
 987                         ret = NULL;
 988                         goto err;
 989                         }
 990                 }
 991
 992         /* Now cleanup */
 993
 994 err:
 995         OPENSSL_cleanse(csigbuf, 40);
 996         CryptDestroyHash(hash);
 997         return ret;
 998         }
 999
1000 static int capi_dsa_free(DSA *dsa)
1001         {
1002         CAPI_KEY *capi_key;
1003         capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
1004         capi_free_key(capi_key);
1005         DSA_set_ex_data(dsa, dsa_capi_idx, 0);
1006         return 1;
1007         }
1008
1009 static void capi_vtrace(CAPI_CTX *ctx, int level, char *format, va_list argptr)
1010         {
1011         BIO *out;
1012
1013         if (!ctx || (ctx->debug_level < level) || (!ctx->debug_file))
1014                 return;
1015         out = BIO_new_file(ctx->debug_file, "a+");
1016         BIO_vprintf(out, format, argptr);
1017         BIO_free(out);
1018         }
1019
1020 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...)
1021         {
1022         va_list args;
1023         va_start(args, format);
1024         capi_vtrace(ctx, CAPI_DBG_TRACE, format, args);
1025         va_end(args);
1026         }
1027
1028 static void capi_addlasterror(void)
1029         {
1030         capi_adderror(GetLastError());
1031         }
1032
1033 static void capi_adderror(DWORD err)
1034         {
1035         char errstr[10];
1036         BIO_snprintf(errstr, 10, "%lX", err);
1037         ERR_add_error_data(2, "Error code= 0x", errstr);
1038         }
1039
1040 static char *wide_to_asc(LPWSTR wstr)
1041         {
1042         char *str;
1043         int len_0,sz;
1044
1045         if (!wstr)
1046                 return NULL;
1047         len_0 = (int)wcslen(wstr)+1;    /* WideCharToMultiByte expects int */
1048         sz = WideCharToMultiByte(CP_ACP,0,wstr,len_0,NULL,0,NULL,NULL);
1049         if (!sz)
1050                 {
1051                 CAPIerr(CAPI_F_WIDE_TO_ASC, CAPI_R_WIN32_ERROR);
1052                 return NULL;
1053                 }
1054         str = OPENSSL_malloc(sz);
1055         if (!str)
1056                 {
1057                 CAPIerr(CAPI_F_WIDE_TO_ASC, ERR_R_MALLOC_FAILURE);
1058                 return NULL;
1059                 }
1060         if (!WideCharToMultiByte(CP_ACP,0,wstr,len_0,str,sz,NULL,NULL))
1061                 {
1062                 OPENSSL_free(str);
1063                 CAPIerr(CAPI_F_WIDE_TO_ASC, CAPI_R_WIN32_ERROR);
1064                 return NULL;
1065                 }
1066         return str;
1067         }
1068
1069 static int capi_get_provname(CAPI_CTX *ctx, LPSTR *pname, DWORD *ptype, DWORD idx)
1070         {
1071         LPSTR name;
1072         DWORD len, err;
1073         CAPI_trace(ctx, "capi_get_provname, index=%d\n", idx);
1074         if (!CryptEnumProvidersA(idx, NULL, 0, ptype, NULL, &len))
1075                 {
1076                 err = GetLastError();
1077                 if (err == ERROR_NO_MORE_ITEMS)
1078                         return 2;
1079                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1080                 capi_adderror(err);
1081                 return 0;
1082                 }
1083         name = OPENSSL_malloc(len);
1084         if (!CryptEnumProvidersA(idx, NULL, 0, ptype, name, &len))
1085                 {
1086                 err = GetLastError();
1087                 if (err == ERROR_NO_MORE_ITEMS)
1088                         return 2;
1089                 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1090                 capi_adderror(err);
1091                 return 0;
1092                 }
1093         *pname = name;
1094         CAPI_trace(ctx, "capi_get_provname, returned name=%s, type=%d\n", name, *ptype);
1095
1096         return 1;
1097         }
1098
1099 static int capi_list_providers(CAPI_CTX *ctx, BIO *out)
1100         {
1101         DWORD idx, ptype;
1102         int ret;
1103         LPSTR provname = NULL;
1104         CAPI_trace(ctx, "capi_list_providers\n");
1105         BIO_printf(out, "Available CSPs:\n");
1106         for(idx = 0; ; idx++)
1107                 {
1108                 ret = capi_get_provname(ctx, &provname, &ptype, idx);
1109                 if (ret == 2)
1110                         break;
1111                 if (ret == 0)
1112                         break;
1113                 BIO_printf(out, "%d. %s, type %d\n", idx, provname, ptype);
1114                 OPENSSL_free(provname);
1115                 }
1116         return 1;
1117         }
1118
1119 static int capi_list_containers(CAPI_CTX *ctx, BIO *out)
1120         {
1121         int ret = 1;
1122         HCRYPTPROV hprov;
1123         DWORD err, idx, flags, buflen = 0, clen;
1124         LPSTR cname;
1125         CAPI_trace(ctx, "Listing containers CSP=%s, type = %d\n", ctx->cspname, ctx->csptype);
1126         if (!CryptAcquireContextA(&hprov, NULL, ctx->cspname, ctx->csptype, CRYPT_VERIFYCONTEXT))
1127                 {
1128                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1129                 capi_addlasterror();
1130                 return 0;
1131                 }
1132         if (!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, NULL, &buflen, CRYPT_FIRST))
1133                 {
1134                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1135                 capi_addlasterror();
1136                 return 0;
1137                 }
1138         CAPI_trace(ctx, "Got max container len %d\n", buflen);
1139         if (buflen == 0)
1140                 buflen = 1024;
1141         cname = OPENSSL_malloc(buflen);
1142         if (!cname)
1143                 {
1144                 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, ERR_R_MALLOC_FAILURE);
1145                 goto err;
1146                 }
1147
1148         for (idx = 0;;idx++)
1149                 {
1150                 clen = buflen;
1151                 cname[0] = 0;
1152
1153                 if (idx == 0)
1154                         flags = CRYPT_FIRST;
1155                 else
1156                         flags = 0;
1157                 if(!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, cname, &clen, flags))
1158                         {
1159                         err = GetLastError();
1160                         if (err == ERROR_NO_MORE_ITEMS)
1161                                 goto done;
1162                         CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1163                         capi_adderror(err);
1164                         goto err;
1165                         }
1166                 CAPI_trace(ctx, "Container name %s, len=%d, index=%d, flags=%d\n", cname, clen, idx, flags);
1167                 if (!cname[0] && (clen == buflen))
1168                         {
1169                         CAPI_trace(ctx, "Enumerate bug: using workaround\n");
1170                         goto done;
1171                         }
1172                 BIO_printf(out, "%d. %s\n", idx, cname);
1173                 }
1174         err:
1175
1176         ret = 0;
1177
1178         done:
1179         if (cname)
1180                 OPENSSL_free(cname);
1181         CryptReleaseContext(hprov, 0);
1182
1183         return ret;
1184         }
1185
1186 CRYPT_KEY_PROV_INFO *capi_get_prov_info(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1187         {
1188         DWORD len;
1189         CRYPT_KEY_PROV_INFO *pinfo;
1190
1191         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, NULL, &len))
1192                 return NULL;
1193         pinfo = OPENSSL_malloc(len);
1194         if (!pinfo)
1195                 {
1196                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, ERR_R_MALLOC_FAILURE);
1197                 return NULL;
1198                 }
1199         if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, pinfo, &len))
1200                 {
1201                 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, CAPI_R_ERROR_GETTING_KEY_PROVIDER_INFO);
1202                 capi_addlasterror();
1203                 OPENSSL_free(pinfo);
1204                 return NULL;
1205                 }
1206         return pinfo;
1207         }
1208
1209 static void capi_dump_prov_info(CAPI_CTX *ctx, BIO *out, CRYPT_KEY_PROV_INFO *pinfo)
1210         {
1211         char *provname = NULL, *contname = NULL;
1212         if (!pinfo)
1213                 {
1214                 BIO_printf(out, "  No Private Key\n");
1215                 return;
1216                 }
1217         provname = wide_to_asc(pinfo->pwszProvName);
1218         contname = wide_to_asc(pinfo->pwszContainerName);
1219         if (!provname || !contname)
1220                 goto err;
1221
1222         BIO_printf(out, "  Private Key Info:\n");
1223         BIO_printf(out, "    Provider Name:  %s, Provider Type %d\n", provname, pinfo->dwProvType);
1224         BIO_printf(out, "    Container Name: %s, Key Type %d\n", contname, pinfo->dwKeySpec);
1225         err:
1226         if (provname)
1227                 OPENSSL_free(provname);
1228         if (contname)
1229                 OPENSSL_free(contname);
1230         }
1231
1232 char * capi_cert_get_fname(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1233         {
1234         LPWSTR wfname;
1235         DWORD dlen;
1236
1237         CAPI_trace(ctx, "capi_cert_get_fname\n");
1238         if (!CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, NULL, &dlen))
1239                 return NULL;
1240         wfname = OPENSSL_malloc(dlen);
1241         if (CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, wfname, &dlen))
1242                 {
1243                 char *fname = wide_to_asc(wfname);
1244                 OPENSSL_free(wfname);
1245                 return fname;
1246                 }
1247         CAPIerr(CAPI_F_CAPI_CERT_GET_FNAME, CAPI_R_ERROR_GETTING_FRIENDLY_NAME);
1248         capi_addlasterror();
1249
1250         OPENSSL_free(wfname);
1251         return NULL;
1252         }
1253
1254
1255 void capi_dump_cert(CAPI_CTX *ctx, BIO *out, PCCERT_CONTEXT cert)
1256         {
1257         X509 *x;
1258         unsigned char *p;
1259         unsigned long flags = ctx->dump_flags;
1260         if (flags & CAPI_DMP_FNAME)
1261                 {
1262                 char *fname;
1263                 fname = capi_cert_get_fname(ctx, cert);
1264                 if (fname)
1265                         {
1266                         BIO_printf(out, "  Friendly Name \"%s\"\n", fname);
1267                         OPENSSL_free(fname);
1268                         }
1269                 else
1270                         BIO_printf(out, "  <No Friendly Name>\n");
1271                 }
1272
1273         p = cert->pbCertEncoded;
1274         x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1275         if (!x)
1276                 BIO_printf(out, "  <Can't parse certificate>\n");
1277         if (flags & CAPI_DMP_SUMMARY)
1278                 {
1279                 BIO_printf(out, "  Subject: ");
1280                 X509_NAME_print_ex(out, X509_get_subject_name(x), 0, XN_FLAG_ONELINE);
1281                 BIO_printf(out, "\n  Issuer: ");
1282                 X509_NAME_print_ex(out, X509_get_issuer_name(x), 0, XN_FLAG_ONELINE);
1283                 BIO_printf(out, "\n");
1284                 }
1285         if (flags & CAPI_DMP_FULL)
1286                 X509_print_ex(out, x, XN_FLAG_ONELINE,0);
1287
1288         if (flags & CAPI_DMP_PKEYINFO)
1289                 {
1290                 CRYPT_KEY_PROV_INFO *pinfo;
1291                 pinfo = capi_get_prov_info(ctx, cert);
1292                 capi_dump_prov_info(ctx, out, pinfo);
1293                 if (pinfo)
1294                         OPENSSL_free(pinfo);
1295                 }
1296
1297         if (flags & CAPI_DMP_PEM)
1298                 PEM_write_bio_X509(out, x);
1299         X509_free(x);
1300         }
1301
1302 HCERTSTORE capi_open_store(CAPI_CTX *ctx, char *storename)
1303         {
1304         HCERTSTORE hstore;
1305
1306         if (!storename)
1307                 storename = ctx->storename;
1308         if (!storename)
1309                 storename = "MY";
1310         CAPI_trace(ctx, "Opening certificate store %s\n", storename);
1311
1312         hstore = CertOpenStore(CERT_STORE_PROV_SYSTEM_A, 0, 0,
1313                                 ctx->store_flags, storename);
1314         if (!hstore)
1315                 {
1316                 CAPIerr(CAPI_F_CAPI_OPEN_STORE, CAPI_R_ERROR_OPENING_STORE);
1317                 capi_addlasterror();
1318                 }
1319         return hstore;
1320         }
1321
1322 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *id)
1323         {
1324         char *storename;
1325         int idx;
1326         int ret = 1;
1327         HCERTSTORE hstore;
1328         PCCERT_CONTEXT cert = NULL;
1329
1330         storename = ctx->storename;
1331         if (!storename)
1332                 storename = "MY";
1333         CAPI_trace(ctx, "Listing certs for store %s\n", storename);
1334
1335         hstore = capi_open_store(ctx, storename);
1336         if (!hstore)
1337                 return 0;
1338         if (id)
1339                 {
1340                 cert = capi_find_cert(ctx, id, hstore);
1341                 if (!cert)
1342                         {
1343                         ret = 0;
1344                         goto err;
1345                         }
1346                 capi_dump_cert(ctx, out, cert);
1347                 CertFreeCertificateContext(cert);
1348                 }
1349         else
1350                 {
1351                 for(idx = 0;;idx++)
1352                         {
1353                         LPWSTR fname = NULL;
1354                         cert = CertEnumCertificatesInStore(hstore, cert);
1355                         if (!cert)
1356                                 break;
1357                         BIO_printf(out, "Certificate %d\n", idx);
1358                         capi_dump_cert(ctx, out, cert);
1359                         }
1360                 }
1361         err:
1362         CertCloseStore(hstore, 0);
1363         return ret;
1364         }
1365
1366 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore)
1367         {
1368         PCCERT_CONTEXT cert = NULL;
1369         char *fname = NULL;
1370         int match;
1371         switch(ctx->lookup_method)
1372                 {
1373                 case CAPI_LU_SUBSTR:
1374                         return CertFindCertificateInStore(hstore,
1375                                         X509_ASN_ENCODING, 0,
1376                                         CERT_FIND_SUBJECT_STR_A, id, NULL);
1377                 case CAPI_LU_FNAME:
1378                         for(;;)
1379                                 {
1380                                 cert = CertEnumCertificatesInStore(hstore, cert);
1381                                 if (!cert)
1382                                         return NULL;
1383                                 fname = capi_cert_get_fname(ctx, cert);
1384                                 if (fname)
1385                                         {
1386                                         if (strcmp(fname, id))
1387                                                 match = 0;
1388                                         else
1389                                                 match = 1;
1390                                         OPENSSL_free(fname);
1391                                         if (match)
1392                                                 return cert;
1393                                         }
1394                                 }
1395                 default:
1396                         return NULL;
1397                 }
1398         }
1399
1400 static CAPI_KEY *capi_get_key(CAPI_CTX *ctx, const char *contname, char *provname, DWORD ptype, DWORD keyspec)
1401         {
1402         CAPI_KEY *key;
1403         key = OPENSSL_malloc(sizeof(CAPI_KEY));
1404         CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n",
1405                                                 contname, provname, ptype);
1406         if (!CryptAcquireContextA(&key->hprov, contname, provname, ptype, 0))
1407                 {
1408                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1409                 capi_addlasterror();
1410                 goto err;
1411                 }
1412         if (!CryptGetUserKey(key->hprov, keyspec, &key->key))
1413                 {
1414                 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_GETUSERKEY_ERROR);
1415                 capi_addlasterror();
1416                 CryptReleaseContext(key->hprov, 0);
1417                 goto err;
1418                 }
1419         key->keyspec = keyspec;
1420         key->pcert = NULL;
1421         return key;
1422
1423         err:
1424         OPENSSL_free(key);
1425         return NULL;
1426         }
1427
1428 static CAPI_KEY *capi_get_cert_key(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1429         {
1430         CAPI_KEY *key = NULL;
1431         CRYPT_KEY_PROV_INFO *pinfo = NULL;
1432         char *provname = NULL, *contname = NULL;
1433         pinfo = capi_get_prov_info(ctx, cert);
1434         if (!pinfo)
1435                 goto err;
1436         provname = wide_to_asc(pinfo->pwszProvName);
1437         contname = wide_to_asc(pinfo->pwszContainerName);
1438         if (!provname || !contname)
1439                 goto err;
1440         key = capi_get_key(ctx, contname, provname,
1441                                 pinfo->dwProvType, pinfo->dwKeySpec);
1442
1443         err:
1444         if (pinfo)
1445                 OPENSSL_free(pinfo);
1446         if (provname)
1447                 OPENSSL_free(provname);
1448         if (contname)
1449                 OPENSSL_free(contname);
1450         return key;
1451         }
1452
1453 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id)
1454         {
1455         PCCERT_CONTEXT cert;
1456         HCERTSTORE hstore;
1457         CAPI_KEY *key = NULL;
1458         switch (ctx->lookup_method)
1459                 {
1460                 case CAPI_LU_SUBSTR:
1461                 case CAPI_LU_FNAME:
1462                 hstore = capi_open_store(ctx, NULL);
1463                 if (!hstore)
1464                         return NULL;
1465                 cert = capi_find_cert(ctx, id, hstore);
1466                 if (cert)
1467                         {
1468                         key = capi_get_cert_key(ctx, cert);
1469                         CertFreeCertificateContext(cert);
1470                         }
1471                 CertCloseStore(hstore, 0);
1472                 break;
1473
1474                 case CAPI_LU_CONTNAME:
1475                 key = capi_get_key(ctx, id, ctx->cspname, ctx->csptype,
1476                                                         ctx->keytype);
1477                 break;
1478                 }
1479
1480         return key;
1481         }
1482
1483 void capi_free_key(CAPI_KEY *key)
1484         {
1485         if (!key)
1486                 return;
1487         CryptDestroyKey(key->key);
1488         CryptReleaseContext(key->hprov, 0);
1489         if (key->pcert)
1490                 CertFreeCertificateContext(key->pcert);
1491         OPENSSL_free(key);
1492         }
1493
1494
1495 /* Initialize a CAPI_CTX structure */
1496
1497 static CAPI_CTX *capi_ctx_new()
1498         {
1499         CAPI_CTX *ctx;
1500         ctx = OPENSSL_malloc(sizeof(CAPI_CTX));
1501         if (!ctx)
1502                 {
1503                 CAPIerr(CAPI_F_CAPI_CTX_NEW, ERR_R_MALLOC_FAILURE);
1504                 return NULL;
1505                 }
1506         ctx->cspname = NULL;
1507         ctx->csptype = PROV_RSA_FULL;
1508         ctx->dump_flags = CAPI_DMP_SUMMARY|CAPI_DMP_FNAME;
1509         ctx->keytype = AT_KEYEXCHANGE;
1510         ctx->storename = NULL;
1511         ctx->ssl_client_store = NULL;
1512         ctx->store_flags = CERT_STORE_OPEN_EXISTING_FLAG |
1513                                 CERT_STORE_READONLY_FLAG |
1514                                 CERT_SYSTEM_STORE_CURRENT_USER;
1515         ctx->lookup_method = CAPI_LU_SUBSTR;
1516         ctx->debug_level = 0;
1517         ctx->debug_file = NULL;
1518         ctx->client_cert_select = cert_select_simple;
1519         return ctx;
1520         }
1521
1522 static void capi_ctx_free(CAPI_CTX *ctx)
1523         {
1524         CAPI_trace(ctx, "Calling capi_ctx_free with %lx\n", ctx);
1525         if (!ctx)
1526                 return;
1527         if (ctx->cspname)
1528                 OPENSSL_free(ctx->cspname);
1529         if (ctx->debug_file)
1530                 OPENSSL_free(ctx->debug_file);
1531         if (ctx->storename)
1532                 OPENSSL_free(ctx->storename);
1533         if (ctx->ssl_client_store)
1534                 OPENSSL_free(ctx->ssl_client_store);
1535         OPENSSL_free(ctx);
1536         }
1537
1538 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check)
1539         {
1540         CAPI_trace(ctx, "capi_ctx_set_provname, name=%s, type=%d\n", pname, type);
1541         if (check)
1542                 {
1543                 HCRYPTPROV hprov;
1544                 if (!CryptAcquireContextA(&hprov, NULL, pname, type,
1545                                                 CRYPT_VERIFYCONTEXT))
1546                         {
1547                         CAPIerr(CAPI_F_CAPI_CTX_SET_PROVNAME, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1548                         capi_addlasterror();
1549                         return 0;
1550                         }
1551                 CryptReleaseContext(hprov, 0);
1552                 }
1553         ctx->cspname = BUF_strdup(pname);
1554         ctx->csptype = type;
1555         return 1;
1556         }
1557
1558 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx)
1559         {
1560         LPSTR pname;
1561         DWORD type;
1562         if (capi_get_provname(ctx, &pname, &type, idx) != 1)
1563                 return 0;
1564         return capi_ctx_set_provname(ctx, pname, type, 0);
1565         }
1566
1567 static int cert_issuer_match(STACK_OF(X509_NAME) *ca_dn, X509 *x)
1568         {
1569         int i;
1570         X509_NAME *nm;
1571         /* Special case: empty list: match anything */
1572         if (sk_X509_NAME_num(ca_dn) <= 0)
1573                 return 1;
1574         for (i = 0; i < sk_X509_NAME_num(ca_dn); i++)
1575                 {
1576                 nm = sk_X509_NAME_value(ca_dn, i);
1577                 if (!X509_NAME_cmp(nm, X509_get_issuer_name(x)))
1578                                 return 1;
1579                 }
1580         return 0;
1581         }
1582
1583
1584
1585 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
1586         STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey,
1587         STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data)
1588         {
1589         STACK_OF(X509) *certs = NULL;
1590         X509 *x;
1591         char *storename;
1592         const char *p;
1593         int i, client_cert_idx;
1594         HCERTSTORE hstore;
1595         PCCERT_CONTEXT cert = NULL, excert = NULL;
1596         CAPI_CTX *ctx;
1597         CAPI_KEY *key;
1598         ctx = ENGINE_get_ex_data(e, capi_idx);
1599
1600         *pcert = NULL;
1601         *pkey = NULL;
1602
1603         storename = ctx->ssl_client_store;
1604         if (!storename)
1605                 storename = "MY";
1606
1607         hstore = capi_open_store(ctx, storename);
1608         if (!hstore)
1609                 return 0;
1610         /* Enumerate all certificates collect any matches */
1611         for(i = 0;;i++)
1612                 {
1613                 cert = CertEnumCertificatesInStore(hstore, cert);
1614                 if (!cert)
1615                         break;
1616                 p = cert->pbCertEncoded;
1617                 x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1618                 if (!x)
1619                         {
1620                         CAPI_trace(ctx, "Can't Parse Certificate %d\n", i);
1621                         continue;
1622                         }
1623                 if (cert_issuer_match(ca_dn, x)
1624                         && X509_check_purpose(x, X509_PURPOSE_SSL_CLIENT, 0))
1625                         {
1626                         key = capi_get_cert_key(ctx, cert);
1627                         if (!key)
1628                                 {
1629                                 X509_free(x);
1630                                 continue;
1631                                 }
1632                         /* Match found: attach extra data to it so
1633                          * we can retrieve the key later.
1634                          */
1635                         excert = CertDuplicateCertificateContext(cert);
1636                         key->pcert = excert;
1637                         X509_set_ex_data(x, cert_capi_idx, key);
1638
1639                         if (!certs)
1640                                 certs = sk_X509_new_null();
1641
1642                         sk_X509_push(certs, x);
1643                         }
1644                 else
1645                         X509_free(x);
1646
1647                 }
1648
1649         if (cert)
1650                 CertFreeCertificateContext(cert);
1651         if (hstore)
1652                 CertCloseStore(hstore, 0);
1653
1654         if (!certs)
1655                 return 0;
1656
1657
1658         /* Select the appropriate certificate */
1659
1660         client_cert_idx = ctx->client_cert_select(e, ssl, certs);
1661
1662         /* Set the selected certificate and free the rest */
1663
1664         for(i = 0; i < sk_X509_num(certs); i++)
1665                 {
1666                 x = sk_X509_value(certs, i);
1667                 if (i == client_cert_idx)
1668                         *pcert = x;
1669                 else
1670                         {
1671                         key = X509_get_ex_data(x, cert_capi_idx);
1672                         capi_free_key(key);
1673                         X509_free(x);
1674                         }
1675                 }
1676
1677         sk_X509_free(certs);
1678
1679         if (!*pcert)
1680                 return 0;
1681
1682         /* Setup key for selected certificate */
1683
1684         key = X509_get_ex_data(*pcert, cert_capi_idx);
1685         *pkey = capi_get_pkey(e, key);
1686         X509_set_ex_data(*pcert, cert_capi_idx, NULL);
1687
1688         return 1;
1689
1690         }
1691
1692
1693 /* Simple client cert selection function: always select first */
1694
1695 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1696         {
1697         return 0;
1698         }
1699
1700 #ifdef OPENSSL_CAPIENG_DIALOG
1701
1702 /* More complex cert selection function, using standard function
1703  * CryptUIDlgSelectCertificateFromStore() to produce a dialog box.
1704  */
1705
1706 /* Definitions which are in cryptuiapi.h but this is not present in older
1707  * versions of headers.
1708  */
1709
1710 #ifndef CRYPTUI_SELECT_LOCATION_COLUMN
1711 #define CRYPTUI_SELECT_LOCATION_COLUMN                   0x000000010
1712 #define CRYPTUI_SELECT_INTENDEDUSE_COLUMN                0x000000004
1713 #endif
1714
1715 #define dlg_title L"OpenSSL Application SSL Client Certificate Selection"
1716 #define dlg_prompt L"Select a certificate to use for authentication"
1717 #define dlg_columns      CRYPTUI_SELECT_LOCATION_COLUMN \
1718                         |CRYPTUI_SELECT_INTENDEDUSE_COLUMN
1719
1720 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1721         {
1722         X509 *x;
1723         HCERTSTORE dstore;
1724         PCCERT_CONTEXT cert;
1725         CAPI_CTX *ctx;
1726         CAPI_KEY *key;
1727         HWND hwnd;
1728         int i, idx = -1;
1729         if (sk_X509_num(certs) == 1)
1730                 return 0;
1731         ctx = ENGINE_get_ex_data(e, capi_idx);
1732         /* Create an in memory store of certificates */
1733         dstore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
1734                                         CERT_STORE_CREATE_NEW_FLAG, NULL);
1735         if (!dstore)
1736                 {
1737                 CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_CREATING_STORE);
1738                 capi_addlasterror();
1739                 goto err;
1740                 }
1741         /* Add all certificates to store */
1742         for(i = 0; i < sk_X509_num(certs); i++)
1743                 {
1744                 x = sk_X509_value(certs, i);
1745                 key = X509_get_ex_data(x, cert_capi_idx);
1746
1747                 if (!CertAddCertificateContextToStore(dstore, key->pcert,
1748                                                 CERT_STORE_ADD_NEW, NULL))
1749                         {
1750                         CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_ADDING_CERT);
1751                         capi_addlasterror();
1752                         goto err;
1753                         }
1754
1755                 }
1756         hwnd = GetForegroundWindow();
1757         if (!hwnd)
1758                 hwnd = GetActiveWindow();
1759         if (!hwnd && ctx->getconswindow)
1760                 hwnd = ctx->getconswindow();
1761         /* Call dialog to select one */
1762         cert = ctx->certselectdlg(dstore, hwnd, dlg_title, dlg_prompt,
1763                                                 dlg_columns, 0, NULL);
1764
1765         /* Find matching cert from list */
1766         if (cert)
1767                 {
1768                 for(i = 0; i < sk_X509_num(certs); i++)
1769                         {
1770                         x = sk_X509_value(certs, i);
1771                         key = X509_get_ex_data(x, cert_capi_idx);
1772                         if (CertCompareCertificate(
1773                                 X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
1774                                         cert->pCertInfo,
1775                                         key->pcert->pCertInfo))
1776                                 {
1777                                 idx = i;
1778                                 break;
1779                                 }
1780                         }
1781                 }
1782
1783         err:
1784         if (dstore)
1785                 CertCloseStore(dstore, 0);
1786         return idx;
1787
1788         }
1789 #endif
1790
1791 #endif
1792 #else /* !WIN32 */
1793 #include <openssl/engine.h>
1794 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
1795 OPENSSL_EXPORT
1796 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns) { return 0; }
1797 IMPLEMENT_DYNAMIC_CHECK_FN()
1798 #endif
1799 #endif