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1 /* engines/e_capi.c */
2 /*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
4 * project.
5 */
6 /* ====================================================================
7 * Copyright (c) 2008-2018 The OpenSSL Project. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 */
54
55 #include <stdio.h>
56 #include <string.h>
57 #include <stdlib.h>
58
59 #include <openssl/crypto.h>
60
61 #ifdef OPENSSL_SYS_WIN32
62 # ifndef OPENSSL_NO_CAPIENG
63
64 # include <openssl/buffer.h>
65 # include <openssl/bn.h>
66 # include <openssl/rsa.h>
67
68 # ifndef _WIN32_WINNT
69 # define _WIN32_WINNT 0x0400
70 # endif
71
72 # include <windows.h>
73 # include <wincrypt.h>
74 # include <malloc.h>
75 # ifndef alloca
76 # define alloca _alloca
77 # endif
78
79 /*
80 * This module uses several "new" interfaces, among which is
81 * CertGetCertificateContextProperty. CERT_KEY_PROV_INFO_PROP_ID is
82 * one of possible values you can pass to function in question. By
83 * checking if it's defined we can see if wincrypt.h and accompanying
84 * crypt32.lib are in shape. The native MingW32 headers up to and
85 * including __W32API_VERSION 3.14 lack of struct DSSPUBKEY and the
86 * defines CERT_STORE_PROV_SYSTEM_A and CERT_STORE_READONLY_FLAG,
87 * so we check for these too and avoid compiling.
88 * Yes, it's rather "weak" test and if compilation fails,
89 * then re-configure with -DOPENSSL_NO_CAPIENG.
90 */
91 # if defined(CERT_KEY_PROV_INFO_PROP_ID) && \
92 defined(CERT_STORE_PROV_SYSTEM_A) && \
93 defined(CERT_STORE_READONLY_FLAG)
94 # define __COMPILE_CAPIENG
95 # endif /* CERT_KEY_PROV_INFO_PROP_ID */
96 # endif /* OPENSSL_NO_CAPIENG */
97 #endif /* OPENSSL_SYS_WIN32 */
98
99 #ifdef __COMPILE_CAPIENG
100
101 # undef X509_EXTENSIONS
102 # undef X509_CERT_PAIR
103
104 /* Definitions which may be missing from earlier version of headers */
105 # ifndef CERT_STORE_OPEN_EXISTING_FLAG
106 # define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
107 # endif
108
109 # ifndef CERT_STORE_CREATE_NEW_FLAG
110 # define CERT_STORE_CREATE_NEW_FLAG 0x00002000
111 # endif
112
113 # ifndef CERT_SYSTEM_STORE_CURRENT_USER
114 # define CERT_SYSTEM_STORE_CURRENT_USER 0x00010000
115 # endif
116
117 # ifndef ALG_SID_SHA_256
118 # define ALG_SID_SHA_256 12
119 # endif
120 # ifndef ALG_SID_SHA_384
121 # define ALG_SID_SHA_384 13
122 # endif
123 # ifndef ALG_SID_SHA_512
124 # define ALG_SID_SHA_512 14
125 # endif
126
127 # ifndef CALG_SHA_256
128 # define CALG_SHA_256 (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_256)
129 # endif
130 # ifndef CALG_SHA_384
131 # define CALG_SHA_384 (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_384)
132 # endif
133 # ifndef CALG_SHA_512
134 # define CALG_SHA_512 (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_512)
135 # endif
136
137 # include <openssl/engine.h>
138 # include <openssl/pem.h>
139 # include <openssl/x509v3.h>
140
141 # include "e_capi_err.h"
142 # include "e_capi_err.c"
143
144 static const char *engine_capi_id = "capi";
145 static const char *engine_capi_name = "CryptoAPI ENGINE";
146
147 typedef struct CAPI_CTX_st CAPI_CTX;
148 typedef struct CAPI_KEY_st CAPI_KEY;
149
150 static void capi_addlasterror(void);
151 static void capi_adderror(DWORD err);
152
153 static void CAPI_trace(CAPI_CTX * ctx, char *format, ...);
154
155 static int capi_list_providers(CAPI_CTX * ctx, BIO *out);
156 static int capi_list_containers(CAPI_CTX * ctx, BIO *out);
157 int capi_list_certs(CAPI_CTX * ctx, BIO *out, char *storename);
158 void capi_free_key(CAPI_KEY * key);
159
160 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX * ctx, const char *id,
161 HCERTSTORE hstore);
162
163 CAPI_KEY *capi_find_key(CAPI_CTX * ctx, const char *id);
164
165 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
166 UI_METHOD *ui_method, void *callback_data);
167 static int capi_rsa_sign(int dtype, const unsigned char *m,
168 unsigned int m_len, unsigned char *sigret,
169 unsigned int *siglen, const RSA *rsa);
170 static int capi_rsa_priv_enc(int flen, const unsigned char *from,
171 unsigned char *to, RSA *rsa, int padding);
172 static int capi_rsa_priv_dec(int flen, const unsigned char *from,
173 unsigned char *to, RSA *rsa, int padding);
174 static int capi_rsa_free(RSA *rsa);
175
176 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
177 DSA *dsa);
178 static int capi_dsa_free(DSA *dsa);
179
180 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
181 STACK_OF(X509_NAME) *ca_dn, X509 **pcert,
182 EVP_PKEY **pkey, STACK_OF(X509) **pother,
183 UI_METHOD *ui_method,
184 void *callback_data);
185
186 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
187 # ifdef OPENSSL_CAPIENG_DIALOG
188 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
189 # endif
190
191 typedef PCCERT_CONTEXT(WINAPI *CERTDLG) (HCERTSTORE, HWND, LPCWSTR,
192 LPCWSTR, DWORD, DWORD, void *);
193 typedef HWND(WINAPI *GETCONSWIN) (void);
194
195 /*
196 * This structure contains CAPI ENGINE specific data: it contains various
197 * global options and affects how other functions behave.
198 */
199
200 # define CAPI_DBG_TRACE 2
201 # define CAPI_DBG_ERROR 1
202
203 struct CAPI_CTX_st {
204 int debug_level;
205 char *debug_file;
206 /* Parameters to use for container lookup */
207 DWORD keytype;
208 LPSTR cspname;
209 DWORD csptype;
210 /* Certificate store name to use */
211 LPSTR storename;
212 LPSTR ssl_client_store;
213 /* System store flags */
214 DWORD store_flags;
215 /* Lookup string meanings in load_private_key */
216 /* Substring of subject: uses "storename" */
217 # define CAPI_LU_SUBSTR 1
218 /* Friendly name: uses storename */
219 # define CAPI_LU_FNAME 2
220 /* Container name: uses cspname, keytype */
221 # define CAPI_LU_CONTNAME 3
222 int lookup_method;
223 /* Info to dump with dumpcerts option */
224 /* Issuer and serial name strings */
225 # define CAPI_DMP_SUMMARY 0x1
226 /* Friendly name */
227 # define CAPI_DMP_FNAME 0x2
228 /* Full X509_print dump */
229 # define CAPI_DMP_FULL 0x4
230 /* Dump PEM format certificate */
231 # define CAPI_DMP_PEM 0x8
232 /* Dump pseudo key (if possible) */
233 # define CAPI_DMP_PSKEY 0x10
234 /* Dump key info (if possible) */
235 # define CAPI_DMP_PKEYINFO 0x20
236 DWORD dump_flags;
237 int (*client_cert_select) (ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
238 CERTDLG certselectdlg;
239 GETCONSWIN getconswindow;
240 };
241
242 static CAPI_CTX *capi_ctx_new();
243 static void capi_ctx_free(CAPI_CTX * ctx);
244 static int capi_ctx_set_provname(CAPI_CTX * ctx, LPSTR pname, DWORD type,
245 int check);
246 static int capi_ctx_set_provname_idx(CAPI_CTX * ctx, int idx);
247
248 # define CAPI_CMD_LIST_CERTS ENGINE_CMD_BASE
249 # define CAPI_CMD_LOOKUP_CERT (ENGINE_CMD_BASE + 1)
250 # define CAPI_CMD_DEBUG_LEVEL (ENGINE_CMD_BASE + 2)
251 # define CAPI_CMD_DEBUG_FILE (ENGINE_CMD_BASE + 3)
252 # define CAPI_CMD_KEYTYPE (ENGINE_CMD_BASE + 4)
253 # define CAPI_CMD_LIST_CSPS (ENGINE_CMD_BASE + 5)
254 # define CAPI_CMD_SET_CSP_IDX (ENGINE_CMD_BASE + 6)
255 # define CAPI_CMD_SET_CSP_NAME (ENGINE_CMD_BASE + 7)
256 # define CAPI_CMD_SET_CSP_TYPE (ENGINE_CMD_BASE + 8)
257 # define CAPI_CMD_LIST_CONTAINERS (ENGINE_CMD_BASE + 9)
258 # define CAPI_CMD_LIST_OPTIONS (ENGINE_CMD_BASE + 10)
259 # define CAPI_CMD_LOOKUP_METHOD (ENGINE_CMD_BASE + 11)
260 # define CAPI_CMD_STORE_NAME (ENGINE_CMD_BASE + 12)
261 # define CAPI_CMD_STORE_FLAGS (ENGINE_CMD_BASE + 13)
262
263 static const ENGINE_CMD_DEFN capi_cmd_defns[] = {
264 {CAPI_CMD_LIST_CERTS,
265 "list_certs",
266 "List all certificates in store",
267 ENGINE_CMD_FLAG_NO_INPUT},
268 {CAPI_CMD_LOOKUP_CERT,
269 "lookup_cert",
270 "Lookup and output certificates",
271 ENGINE_CMD_FLAG_STRING},
272 {CAPI_CMD_DEBUG_LEVEL,
273 "debug_level",
274 "debug level (1=errors, 2=trace)",
275 ENGINE_CMD_FLAG_NUMERIC},
276 {CAPI_CMD_DEBUG_FILE,
277 "debug_file",
278 "debugging filename)",
279 ENGINE_CMD_FLAG_STRING},
280 {CAPI_CMD_KEYTYPE,
281 "key_type",
282 "Key type: 1=AT_KEYEXCHANGE (default), 2=AT_SIGNATURE",
283 ENGINE_CMD_FLAG_NUMERIC},
284 {CAPI_CMD_LIST_CSPS,
285 "list_csps",
286 "List all CSPs",
287 ENGINE_CMD_FLAG_NO_INPUT},
288 {CAPI_CMD_SET_CSP_IDX,
289 "csp_idx",
290 "Set CSP by index",
291 ENGINE_CMD_FLAG_NUMERIC},
292 {CAPI_CMD_SET_CSP_NAME,
293 "csp_name",
294 "Set CSP name, (default CSP used if not specified)",
295 ENGINE_CMD_FLAG_STRING},
296 {CAPI_CMD_SET_CSP_TYPE,
297 "csp_type",
298 "Set CSP type, (default RSA_PROV_FULL)",
299 ENGINE_CMD_FLAG_NUMERIC},
300 {CAPI_CMD_LIST_CONTAINERS,
301 "list_containers",
302 "list container names",
303 ENGINE_CMD_FLAG_NO_INPUT},
304 {CAPI_CMD_LIST_OPTIONS,
305 "list_options",
306 "Set list options (1=summary,2=friendly name, 4=full printout, 8=PEM output, 16=XXX, "
307 "32=private key info)",
308 ENGINE_CMD_FLAG_NUMERIC},
309 {CAPI_CMD_LOOKUP_METHOD,
310 "lookup_method",
311 "Set key lookup method (1=substring, 2=friendlyname, 3=container name)",
312 ENGINE_CMD_FLAG_NUMERIC},
313 {CAPI_CMD_STORE_NAME,
314 "store_name",
315 "certificate store name, default \"MY\"",
316 ENGINE_CMD_FLAG_STRING},
317 {CAPI_CMD_STORE_FLAGS,
318 "store_flags",
319 "Certificate store flags: 1 = system store",
320 ENGINE_CMD_FLAG_NUMERIC},
321
322 {0, NULL, NULL, 0}
323 };
324
325 static int capi_idx = -1;
326 static int rsa_capi_idx = -1;
327 static int dsa_capi_idx = -1;
328 static int cert_capi_idx = -1;
329
330 static int capi_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
331 {
332 int ret = 1;
333 CAPI_CTX *ctx;
334 BIO *out;
335 if (capi_idx == -1) {
336 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_ENGINE_NOT_INITIALIZED);
337 return 0;
338 }
339 ctx = ENGINE_get_ex_data(e, capi_idx);
340 out = BIO_new_fp(stdout, BIO_NOCLOSE);
341 switch (cmd) {
342 case CAPI_CMD_LIST_CSPS:
343 ret = capi_list_providers(ctx, out);
344 break;
345
346 case CAPI_CMD_LIST_CERTS:
347 ret = capi_list_certs(ctx, out, NULL);
348 break;
349
350 case CAPI_CMD_LOOKUP_CERT:
351 ret = capi_list_certs(ctx, out, p);
352 break;
353
354 case CAPI_CMD_LIST_CONTAINERS:
355 ret = capi_list_containers(ctx, out);
356 break;
357
358 case CAPI_CMD_STORE_NAME:
359 if (ctx->storename)
360 OPENSSL_free(ctx->storename);
361 ctx->storename = BUF_strdup(p);
362 CAPI_trace(ctx, "Setting store name to %s\n", p);
363 break;
364
365 case CAPI_CMD_STORE_FLAGS:
366 if (i & 1) {
367 ctx->store_flags |= CERT_SYSTEM_STORE_LOCAL_MACHINE;
368 ctx->store_flags &= ~CERT_SYSTEM_STORE_CURRENT_USER;
369 } else {
370 ctx->store_flags |= CERT_SYSTEM_STORE_CURRENT_USER;
371 ctx->store_flags &= ~CERT_SYSTEM_STORE_LOCAL_MACHINE;
372 }
373 CAPI_trace(ctx, "Setting flags to %d\n", i);
374 break;
375
376 case CAPI_CMD_DEBUG_LEVEL:
377 ctx->debug_level = (int)i;
378 CAPI_trace(ctx, "Setting debug level to %d\n", ctx->debug_level);
379 break;
380
381 case CAPI_CMD_DEBUG_FILE:
382 ctx->debug_file = BUF_strdup(p);
383 CAPI_trace(ctx, "Setting debug file to %s\n", ctx->debug_file);
384 break;
385
386 case CAPI_CMD_KEYTYPE:
387 ctx->keytype = i;
388 CAPI_trace(ctx, "Setting key type to %d\n", ctx->keytype);
389 break;
390
391 case CAPI_CMD_SET_CSP_IDX:
392 ret = capi_ctx_set_provname_idx(ctx, i);
393 break;
394
395 case CAPI_CMD_LIST_OPTIONS:
396 ctx->dump_flags = i;
397 break;
398
399 case CAPI_CMD_LOOKUP_METHOD:
400 if (i < 1 || i > 3) {
401 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_INVALID_LOOKUP_METHOD);
402 return 0;
403 }
404 ctx->lookup_method = i;
405 break;
406
407 case CAPI_CMD_SET_CSP_NAME:
408 ret = capi_ctx_set_provname(ctx, p, ctx->csptype, 1);
409 break;
410
411 case CAPI_CMD_SET_CSP_TYPE:
412 ctx->csptype = i;
413 break;
414
415 default:
416 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_UNKNOWN_COMMAND);
417 ret = 0;
418 }
419
420 BIO_free(out);
421 return ret;
422
423 }
424
425 static RSA_METHOD capi_rsa_method = {
426 "CryptoAPI RSA method",
427 0, /* pub_enc */
428 0, /* pub_dec */
429 capi_rsa_priv_enc, /* priv_enc */
430 capi_rsa_priv_dec, /* priv_dec */
431 0, /* rsa_mod_exp */
432 0, /* bn_mod_exp */
433 0, /* init */
434 capi_rsa_free, /* finish */
435 RSA_FLAG_SIGN_VER, /* flags */
436 NULL, /* app_data */
437 capi_rsa_sign, /* rsa_sign */
438 0 /* rsa_verify */
439 };
440
441 static DSA_METHOD capi_dsa_method = {
442 "CryptoAPI DSA method",
443 capi_dsa_do_sign, /* dsa_do_sign */
444 0, /* dsa_sign_setup */
445 0, /* dsa_do_verify */
446 0, /* dsa_mod_exp */
447 0, /* bn_mod_exp */
448 0, /* init */
449 capi_dsa_free, /* finish */
450 0, /* flags */
451 NULL, /* app_data */
452 0, /* dsa_paramgen */
453 0 /* dsa_keygen */
454 };
455
456 static int capi_init(ENGINE *e)
457 {
458 CAPI_CTX *ctx;
459 const RSA_METHOD *ossl_rsa_meth;
460 const DSA_METHOD *ossl_dsa_meth;
461
462 if (capi_idx < 0) {
463 capi_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, 0);
464 if (capi_idx < 0)
465 goto memerr;
466
467 cert_capi_idx = X509_get_ex_new_index(0, NULL, NULL, NULL, 0);
468
469 /* Setup RSA_METHOD */
470 rsa_capi_idx = RSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
471 ossl_rsa_meth = RSA_PKCS1_SSLeay();
472 capi_rsa_method.rsa_pub_enc = ossl_rsa_meth->rsa_pub_enc;
473 capi_rsa_method.rsa_pub_dec = ossl_rsa_meth->rsa_pub_dec;
474 capi_rsa_method.rsa_mod_exp = ossl_rsa_meth->rsa_mod_exp;
475 capi_rsa_method.bn_mod_exp = ossl_rsa_meth->bn_mod_exp;
476
477 /* Setup DSA Method */
478 dsa_capi_idx = DSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
479 ossl_dsa_meth = DSA_OpenSSL();
480 capi_dsa_method.dsa_do_verify = ossl_dsa_meth->dsa_do_verify;
481 capi_dsa_method.dsa_mod_exp = ossl_dsa_meth->dsa_mod_exp;
482 capi_dsa_method.bn_mod_exp = ossl_dsa_meth->bn_mod_exp;
483 }
484
485 ctx = capi_ctx_new();
486 if (!ctx)
487 goto memerr;
488
489 ENGINE_set_ex_data(e, capi_idx, ctx);
490
491 # ifdef OPENSSL_CAPIENG_DIALOG
492 {
493 HMODULE cryptui = LoadLibrary(TEXT("CRYPTUI.DLL"));
494 HMODULE kernel = GetModuleHandle(TEXT("KERNEL32.DLL"));
495 if (cryptui)
496 ctx->certselectdlg =
497 (CERTDLG) GetProcAddress(cryptui,
498 "CryptUIDlgSelectCertificateFromStore");
499 if (kernel)
500 ctx->getconswindow =
501 (GETCONSWIN) GetProcAddress(kernel, "GetConsoleWindow");
502 if (cryptui && !OPENSSL_isservice())
503 ctx->client_cert_select = cert_select_dialog;
504 }
505 # endif
506
507 return 1;
508
509 memerr:
510 CAPIerr(CAPI_F_CAPI_INIT, ERR_R_MALLOC_FAILURE);
511 return 0;
512
513 return 1;
514 }
515
516 static int capi_destroy(ENGINE *e)
517 {
518 ERR_unload_CAPI_strings();
519 return 1;
520 }
521
522 static int capi_finish(ENGINE *e)
523 {
524 CAPI_CTX *ctx;
525 ctx = ENGINE_get_ex_data(e, capi_idx);
526 capi_ctx_free(ctx);
527 ENGINE_set_ex_data(e, capi_idx, NULL);
528 return 1;
529 }
530
531 /*
532 * CryptoAPI key application data. This contains a handle to the private key
533 * container (for sign operations) and a handle to the key (for decrypt
534 * operations).
535 */
536
537 struct CAPI_KEY_st {
538 /* Associated certificate context (if any) */
539 PCCERT_CONTEXT pcert;
540 HCRYPTPROV hprov;
541 HCRYPTKEY key;
542 DWORD keyspec;
543 };
544
545 static int bind_capi(ENGINE *e)
546 {
547 if (!ENGINE_set_id(e, engine_capi_id)
548 || !ENGINE_set_name(e, engine_capi_name)
549 || !ENGINE_set_flags(e, ENGINE_FLAGS_NO_REGISTER_ALL)
550 || !ENGINE_set_init_function(e, capi_init)
551 || !ENGINE_set_finish_function(e, capi_finish)
552 || !ENGINE_set_destroy_function(e, capi_destroy)
553 || !ENGINE_set_RSA(e, &capi_rsa_method)
554 || !ENGINE_set_DSA(e, &capi_dsa_method)
555 || !ENGINE_set_load_privkey_function(e, capi_load_privkey)
556 || !ENGINE_set_load_ssl_client_cert_function(e,
557 capi_load_ssl_client_cert)
558 || !ENGINE_set_cmd_defns(e, capi_cmd_defns)
559 || !ENGINE_set_ctrl_function(e, capi_ctrl))
560 return 0;
561 ERR_load_CAPI_strings();
562
563 return 1;
564
565 }
566
567 # ifndef OPENSSL_NO_DYNAMIC_ENGINE
568 static int bind_helper(ENGINE *e, const char *id)
569 {
570 if (id && (strcmp(id, engine_capi_id) != 0))
571 return 0;
572 if (!bind_capi(e))
573 return 0;
574 return 1;
575 }
576
577 IMPLEMENT_DYNAMIC_CHECK_FN()
578 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
579 # else
580 static ENGINE *engine_capi(void)
581 {
582 ENGINE *ret = ENGINE_new();
583 if (!ret)
584 return NULL;
585 if (!bind_capi(ret)) {
586 ENGINE_free(ret);
587 return NULL;
588 }
589 return ret;
590 }
591
592 void ENGINE_load_capi(void)
593 {
594 /* Copied from eng_[openssl|dyn].c */
595 ENGINE *toadd = engine_capi();
596 if (!toadd)
597 return;
598 ENGINE_add(toadd);
599 ENGINE_free(toadd);
600 ERR_clear_error();
601 }
602 # endif
603
604 static int lend_tobn(BIGNUM *bn, unsigned char *bin, int binlen)
605 {
606 int i;
607 /*
608 * Reverse buffer in place: since this is a keyblob structure that will
609 * be freed up after conversion anyway it doesn't matter if we change
610 * it.
611 */
612 for (i = 0; i < binlen / 2; i++) {
613 unsigned char c;
614 c = bin[i];
615 bin[i] = bin[binlen - i - 1];
616 bin[binlen - i - 1] = c;
617 }
618
619 if (!BN_bin2bn(bin, binlen, bn))
620 return 0;
621 return 1;
622 }
623
624 /* Given a CAPI_KEY get an EVP_PKEY structure */
625
626 static EVP_PKEY *capi_get_pkey(ENGINE *eng, CAPI_KEY * key)
627 {
628 unsigned char *pubkey = NULL;
629 DWORD len;
630 BLOBHEADER *bh;
631 RSA *rkey = NULL;
632 DSA *dkey = NULL;
633 EVP_PKEY *ret = NULL;
634 if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, NULL, &len)) {
635 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_LENGTH_ERROR);
636 capi_addlasterror();
637 return NULL;
638 }
639
640 pubkey = OPENSSL_malloc(len);
641
642 if (!pubkey)
643 goto memerr;
644
645 if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, pubkey, &len)) {
646 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_ERROR);
647 capi_addlasterror();
648 goto err;
649 }
650
651 bh = (BLOBHEADER *) pubkey;
652 if (bh->bType != PUBLICKEYBLOB) {
653 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_PUBLIC_KEY_BLOB);
654 goto err;
655 }
656 if (bh->aiKeyAlg == CALG_RSA_SIGN || bh->aiKeyAlg == CALG_RSA_KEYX) {
657 RSAPUBKEY *rp;
658 DWORD rsa_modlen;
659 unsigned char *rsa_modulus;
660 rp = (RSAPUBKEY *) (bh + 1);
661 if (rp->magic != 0x31415352) {
662 char magstr[10];
663 BIO_snprintf(magstr, 10, "%lx", rp->magic);
664 CAPIerr(CAPI_F_CAPI_GET_PKEY,
665 CAPI_R_INVALID_RSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
666 ERR_add_error_data(2, "magic=0x", magstr);
667 goto err;
668 }
669 rsa_modulus = (unsigned char *)(rp + 1);
670 rkey = RSA_new_method(eng);
671 if (!rkey)
672 goto memerr;
673
674 rkey->e = BN_new();
675 rkey->n = BN_new();
676
677 if (!rkey->e || !rkey->n)
678 goto memerr;
679
680 if (!BN_set_word(rkey->e, rp->pubexp))
681 goto memerr;
682
683 rsa_modlen = rp->bitlen / 8;
684 if (!lend_tobn(rkey->n, rsa_modulus, rsa_modlen))
685 goto memerr;
686
687 RSA_set_ex_data(rkey, rsa_capi_idx, key);
688
689 if (!(ret = EVP_PKEY_new()))
690 goto memerr;
691
692 EVP_PKEY_assign_RSA(ret, rkey);
693 rkey = NULL;
694
695 } else if (bh->aiKeyAlg == CALG_DSS_SIGN) {
696 DSSPUBKEY *dp;
697 DWORD dsa_plen;
698 unsigned char *btmp;
699 dp = (DSSPUBKEY *) (bh + 1);
700 if (dp->magic != 0x31535344) {
701 char magstr[10];
702 BIO_snprintf(magstr, 10, "%lx", dp->magic);
703 CAPIerr(CAPI_F_CAPI_GET_PKEY,
704 CAPI_R_INVALID_DSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
705 ERR_add_error_data(2, "magic=0x", magstr);
706 goto err;
707 }
708 dsa_plen = dp->bitlen / 8;
709 btmp = (unsigned char *)(dp + 1);
710 dkey = DSA_new_method(eng);
711 if (!dkey)
712 goto memerr;
713 dkey->p = BN_new();
714 dkey->q = BN_new();
715 dkey->g = BN_new();
716 dkey->pub_key = BN_new();
717 if (!dkey->p || !dkey->q || !dkey->g || !dkey->pub_key)
718 goto memerr;
719 if (!lend_tobn(dkey->p, btmp, dsa_plen))
720 goto memerr;
721 btmp += dsa_plen;
722 if (!lend_tobn(dkey->q, btmp, 20))
723 goto memerr;
724 btmp += 20;
725 if (!lend_tobn(dkey->g, btmp, dsa_plen))
726 goto memerr;
727 btmp += dsa_plen;
728 if (!lend_tobn(dkey->pub_key, btmp, dsa_plen))
729 goto memerr;
730 btmp += dsa_plen;
731
732 DSA_set_ex_data(dkey, dsa_capi_idx, key);
733
734 if (!(ret = EVP_PKEY_new()))
735 goto memerr;
736
737 EVP_PKEY_assign_DSA(ret, dkey);
738 dkey = NULL;
739 } else {
740 char algstr[10];
741 BIO_snprintf(algstr, 10, "%lx", bh->aiKeyAlg);
742 CAPIerr(CAPI_F_CAPI_GET_PKEY,
743 CAPI_R_UNSUPPORTED_PUBLIC_KEY_ALGORITHM);
744 ERR_add_error_data(2, "aiKeyAlg=0x", algstr);
745 goto err;
746 }
747
748 err:
749 if (pubkey)
750 OPENSSL_free(pubkey);
751 if (!ret) {
752 if (rkey)
753 RSA_free(rkey);
754 if (dkey)
755 DSA_free(dkey);
756 }
757
758 return ret;
759
760 memerr:
761 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_MALLOC_FAILURE);
762 goto err;
763
764 }
765
766 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
767 UI_METHOD *ui_method, void *callback_data)
768 {
769 CAPI_CTX *ctx;
770 CAPI_KEY *key;
771 EVP_PKEY *ret;
772 ctx = ENGINE_get_ex_data(eng, capi_idx);
773
774 if (!ctx) {
775 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_CANT_FIND_CAPI_CONTEXT);
776 return NULL;
777 }
778
779 key = capi_find_key(ctx, key_id);
780
781 if (!key)
782 return NULL;
783
784 ret = capi_get_pkey(eng, key);
785
786 if (!ret)
787 capi_free_key(key);
788 return ret;
789
790 }
791
792 /* CryptoAPI RSA operations */
793
794 int capi_rsa_priv_enc(int flen, const unsigned char *from,
795 unsigned char *to, RSA *rsa, int padding)
796 {
797 CAPIerr(CAPI_F_CAPI_RSA_PRIV_ENC, CAPI_R_FUNCTION_NOT_SUPPORTED);
798 return -1;
799 }
800
801 int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
802 unsigned char *sigret, unsigned int *siglen, const RSA *rsa)
803 {
804 ALG_ID alg;
805 HCRYPTHASH hash;
806 DWORD slen;
807 unsigned int i;
808 int ret = -1;
809 CAPI_KEY *capi_key;
810 CAPI_CTX *ctx;
811
812 ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
813
814 CAPI_trace(ctx, "Called CAPI_rsa_sign()\n");
815
816 capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
817 if (!capi_key) {
818 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_GET_KEY);
819 return -1;
820 }
821 /* Convert the signature type to a CryptoAPI algorithm ID */
822 switch (dtype) {
823 case NID_sha256:
824 alg = CALG_SHA_256;
825 break;
826
827 case NID_sha384:
828 alg = CALG_SHA_384;
829 break;
830
831 case NID_sha512:
832 alg = CALG_SHA_512;
833 break;
834
835 case NID_sha1:
836 alg = CALG_SHA1;
837 break;
838
839 case NID_md5:
840 alg = CALG_MD5;
841 break;
842
843 case NID_md5_sha1:
844 alg = CALG_SSL3_SHAMD5;
845 break;
846 default:
847 {
848 char algstr[10];
849 BIO_snprintf(algstr, 10, "%lx", dtype);
850 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_UNSUPPORTED_ALGORITHM_NID);
851 ERR_add_error_data(2, "NID=0x", algstr);
852 return -1;
853 }
854 }
855
856 /* Create the hash object */
857 if (!CryptCreateHash(capi_key->hprov, alg, 0, 0, &hash)) {
858 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
859 capi_addlasterror();
860 return -1;
861 }
862 /* Set the hash value to the value passed */
863
864 if (!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)m, 0)) {
865 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
866 capi_addlasterror();
867 goto err;
868 }
869
870 /* Finally sign it */
871 slen = RSA_size(rsa);
872 if (!CryptSignHash(hash, capi_key->keyspec, NULL, 0, sigret, &slen)) {
873 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_ERROR_SIGNING_HASH);
874 capi_addlasterror();
875 goto err;
876 } else {
877 ret = 1;
878 /* Inplace byte reversal of signature */
879 for (i = 0; i < slen / 2; i++) {
880 unsigned char c;
881 c = sigret[i];
882 sigret[i] = sigret[slen - i - 1];
883 sigret[slen - i - 1] = c;
884 }
885 *siglen = slen;
886 }
887
888 /* Now cleanup */
889
890 err:
891 CryptDestroyHash(hash);
892
893 return ret;
894 }
895
896 int capi_rsa_priv_dec(int flen, const unsigned char *from,
897 unsigned char *to, RSA *rsa, int padding)
898 {
899 int i;
900 unsigned char *tmpbuf;
901 CAPI_KEY *capi_key;
902 CAPI_CTX *ctx;
903 DWORD flags = 0;
904
905 ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
906
907 CAPI_trace(ctx, "Called capi_rsa_priv_dec()\n");
908
909 capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
910 if (!capi_key) {
911 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_CANT_GET_KEY);
912 return -1;
913 }
914
915 switch (padding) {
916 case RSA_PKCS1_PADDING:
917 /* Nothing to do */
918 break;
919 #ifdef CRYPT_DECRYPT_RSA_NO_PADDING_CHECK
920 case RSA_NO_PADDING:
921 flags = CRYPT_DECRYPT_RSA_NO_PADDING_CHECK;
922 break;
923 #endif
924 default:
925 {
926 char errstr[10];
927 BIO_snprintf(errstr, 10, "%d", padding);
928 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_UNSUPPORTED_PADDING);
929 ERR_add_error_data(2, "padding=", errstr);
930 return -1;
931 }
932 }
933
934 /* Create temp reverse order version of input */
935 if (!(tmpbuf = OPENSSL_malloc(flen))) {
936 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, ERR_R_MALLOC_FAILURE);
937 return -1;
938 }
939 for (i = 0; i < flen; i++)
940 tmpbuf[flen - i - 1] = from[i];
941
942 /* Finally decrypt it */
943 if (!CryptDecrypt(capi_key->key, 0, TRUE, flags, tmpbuf, &flen)) {
944 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_DECRYPT_ERROR);
945 capi_addlasterror();
946 OPENSSL_cleanse(tmpbuf, flen);
947 OPENSSL_free(tmpbuf);
948 return -1;
949 } else {
950 memcpy(to, tmpbuf, flen);
951 }
952
953 OPENSSL_cleanse(tmpbuf, flen);
954 OPENSSL_free(tmpbuf);
955
956 return flen;
957 }
958
959 static int capi_rsa_free(RSA *rsa)
960 {
961 CAPI_KEY *capi_key;
962 capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
963 capi_free_key(capi_key);
964 RSA_set_ex_data(rsa, rsa_capi_idx, 0);
965 return 1;
966 }
967
968 /* CryptoAPI DSA operations */
969
970 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
971 DSA *dsa)
972 {
973 HCRYPTHASH hash;
974 DWORD slen;
975 DSA_SIG *ret = NULL;
976 CAPI_KEY *capi_key;
977 CAPI_CTX *ctx;
978 unsigned char csigbuf[40];
979
980 ctx = ENGINE_get_ex_data(dsa->engine, capi_idx);
981
982 CAPI_trace(ctx, "Called CAPI_dsa_do_sign()\n");
983
984 capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
985
986 if (!capi_key) {
987 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_GET_KEY);
988 return NULL;
989 }
990
991 if (dlen != 20) {
992 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_INVALID_DIGEST_LENGTH);
993 return NULL;
994 }
995
996 /* Create the hash object */
997 if (!CryptCreateHash(capi_key->hprov, CALG_SHA1, 0, 0, &hash)) {
998 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
999 capi_addlasterror();
1000 return NULL;
1001 }
1002
1003 /* Set the hash value to the value passed */
1004 if (!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)digest, 0)) {
1005 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
1006 capi_addlasterror();
1007 goto err;
1008 }
1009
1010 /* Finally sign it */
1011 slen = sizeof(csigbuf);
1012 if (!CryptSignHash(hash, capi_key->keyspec, NULL, 0, csigbuf, &slen)) {
1013 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_ERROR_SIGNING_HASH);
1014 capi_addlasterror();
1015 goto err;
1016 } else {
1017 ret = DSA_SIG_new();
1018 if (!ret)
1019 goto err;
1020 ret->r = BN_new();
1021 ret->s = BN_new();
1022 if (!ret->r || !ret->s)
1023 goto err;
1024 if (!lend_tobn(ret->r, csigbuf, 20)
1025 || !lend_tobn(ret->s, csigbuf + 20, 20)) {
1026 DSA_SIG_free(ret);
1027 ret = NULL;
1028 goto err;
1029 }
1030 }
1031
1032 /* Now cleanup */
1033
1034 err:
1035 OPENSSL_cleanse(csigbuf, 40);
1036 CryptDestroyHash(hash);
1037 return ret;
1038 }
1039
1040 static int capi_dsa_free(DSA *dsa)
1041 {
1042 CAPI_KEY *capi_key;
1043 capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
1044 capi_free_key(capi_key);
1045 DSA_set_ex_data(dsa, dsa_capi_idx, 0);
1046 return 1;
1047 }
1048
1049 static void capi_vtrace(CAPI_CTX * ctx, int level, char *format,
1050 va_list argptr)
1051 {
1052 BIO *out;
1053
1054 if (!ctx || (ctx->debug_level < level) || (!ctx->debug_file))
1055 return;
1056 out = BIO_new_file(ctx->debug_file, "a+");
1057 BIO_vprintf(out, format, argptr);
1058 BIO_free(out);
1059 }
1060
1061 static void CAPI_trace(CAPI_CTX * ctx, char *format, ...)
1062 {
1063 va_list args;
1064 va_start(args, format);
1065 capi_vtrace(ctx, CAPI_DBG_TRACE, format, args);
1066 va_end(args);
1067 }
1068
1069 static void capi_addlasterror(void)
1070 {
1071 capi_adderror(GetLastError());
1072 }
1073
1074 static void capi_adderror(DWORD err)
1075 {
1076 char errstr[10];
1077 BIO_snprintf(errstr, 10, "%lX", err);
1078 ERR_add_error_data(2, "Error code= 0x", errstr);
1079 }
1080
1081 static char *wide_to_asc(LPCWSTR wstr)
1082 {
1083 char *str;
1084 int len_0, sz;
1085
1086 if (!wstr)
1087 return NULL;
1088 len_0 = (int)wcslen(wstr) + 1; /* WideCharToMultiByte expects int */
1089 sz = WideCharToMultiByte(CP_ACP, 0, wstr, len_0, NULL, 0, NULL, NULL);
1090 if (!sz) {
1091 CAPIerr(CAPI_F_WIDE_TO_ASC, CAPI_R_WIN32_ERROR);
1092 return NULL;
1093 }
1094 str = OPENSSL_malloc(sz);
1095 if (!str) {
1096 CAPIerr(CAPI_F_WIDE_TO_ASC, ERR_R_MALLOC_FAILURE);
1097 return NULL;
1098 }
1099 if (!WideCharToMultiByte(CP_ACP, 0, wstr, len_0, str, sz, NULL, NULL)) {
1100 OPENSSL_free(str);
1101 CAPIerr(CAPI_F_WIDE_TO_ASC, CAPI_R_WIN32_ERROR);
1102 return NULL;
1103 }
1104 return str;
1105 }
1106
1107 static int capi_get_provname(CAPI_CTX * ctx, LPSTR * pname, DWORD * ptype,
1108 DWORD idx)
1109 {
1110 DWORD len, err;
1111 LPTSTR name;
1112 CAPI_trace(ctx, "capi_get_provname, index=%d\n", idx);
1113 if (!CryptEnumProviders(idx, NULL, 0, ptype, NULL, &len)) {
1114 err = GetLastError();
1115 if (err == ERROR_NO_MORE_ITEMS)
1116 return 2;
1117 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1118 capi_adderror(err);
1119 return 0;
1120 }
1121 if (sizeof(TCHAR) != sizeof(char))
1122 name = alloca(len);
1123 else
1124 name = OPENSSL_malloc(len);
1125 if (name == NULL) {
1126 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, ERR_R_MALLOC_FAILURE);
1127 return 0;
1128 }
1129 if (!CryptEnumProviders(idx, NULL, 0, ptype, name, &len)) {
1130 err = GetLastError();
1131 if (err == ERROR_NO_MORE_ITEMS)
1132 return 2;
1133 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1134 capi_adderror(err);
1135 return 0;
1136 }
1137 if (sizeof(TCHAR) != sizeof(char))
1138 *pname = wide_to_asc((WCHAR *)name);
1139 else
1140 *pname = (char *)name;
1141 CAPI_trace(ctx, "capi_get_provname, returned name=%s, type=%d\n", *pname,
1142 *ptype);
1143
1144 return 1;
1145 }
1146
1147 static int capi_list_providers(CAPI_CTX * ctx, BIO *out)
1148 {
1149 DWORD idx, ptype;
1150 int ret;
1151 LPSTR provname = NULL;
1152 CAPI_trace(ctx, "capi_list_providers\n");
1153 BIO_printf(out, "Available CSPs:\n");
1154 for (idx = 0;; idx++) {
1155 ret = capi_get_provname(ctx, &provname, &ptype, idx);
1156 if (ret == 2)
1157 break;
1158 if (ret == 0)
1159 break;
1160 BIO_printf(out, "%d. %s, type %d\n", idx, provname, ptype);
1161 OPENSSL_free(provname);
1162 }
1163 return 1;
1164 }
1165
1166 static int capi_list_containers(CAPI_CTX * ctx, BIO *out)
1167 {
1168 int ret = 1;
1169 HCRYPTPROV hprov;
1170 DWORD err, idx, flags, buflen = 0, clen;
1171 LPSTR cname;
1172 LPTSTR cspname = NULL;
1173
1174 CAPI_trace(ctx, "Listing containers CSP=%s, type = %d\n", ctx->cspname,
1175 ctx->csptype);
1176 if (ctx->cspname && sizeof(TCHAR) != sizeof(char)) {
1177 if ((clen =
1178 MultiByteToWideChar(CP_ACP, 0, ctx->cspname, -1, NULL, 0))) {
1179 cspname = alloca(clen * sizeof(WCHAR));
1180 MultiByteToWideChar(CP_ACP, 0, ctx->cspname, -1, (WCHAR *)cspname,
1181 clen);
1182 }
1183 if (!cspname) {
1184 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, ERR_R_MALLOC_FAILURE);
1185 capi_addlasterror();
1186 return 0;
1187 }
1188 } else
1189 cspname = (TCHAR *)ctx->cspname;
1190 if (!CryptAcquireContext
1191 (&hprov, NULL, cspname, ctx->csptype, CRYPT_VERIFYCONTEXT)) {
1192 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS,
1193 CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1194 capi_addlasterror();
1195 return 0;
1196 }
1197 if (!CryptGetProvParam
1198 (hprov, PP_ENUMCONTAINERS, NULL, &buflen, CRYPT_FIRST)) {
1199 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1200 capi_addlasterror();
1201 CryptReleaseContext(hprov, 0);
1202 return 0;
1203 }
1204 CAPI_trace(ctx, "Got max container len %d\n", buflen);
1205 if (buflen == 0)
1206 buflen = 1024;
1207 cname = OPENSSL_malloc(buflen);
1208 if (!cname) {
1209 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, ERR_R_MALLOC_FAILURE);
1210 goto err;
1211 }
1212
1213 for (idx = 0;; idx++) {
1214 clen = buflen;
1215 cname[0] = 0;
1216
1217 if (idx == 0)
1218 flags = CRYPT_FIRST;
1219 else
1220 flags = 0;
1221 if (!CryptGetProvParam
1222 (hprov, PP_ENUMCONTAINERS, (BYTE *) cname, &clen, flags)) {
1223 err = GetLastError();
1224 if (err == ERROR_NO_MORE_ITEMS)
1225 goto done;
1226 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1227 capi_adderror(err);
1228 goto err;
1229 }
1230 CAPI_trace(ctx, "Container name %s, len=%d, index=%d, flags=%d\n",
1231 cname, clen, idx, flags);
1232 if (!cname[0] && (clen == buflen)) {
1233 CAPI_trace(ctx, "Enumerate bug: using workaround\n");
1234 goto done;
1235 }
1236 BIO_printf(out, "%d. %s\n", idx, cname);
1237 }
1238 err:
1239
1240 ret = 0;
1241
1242 done:
1243 if (cname)
1244 OPENSSL_free(cname);
1245 CryptReleaseContext(hprov, 0);
1246
1247 return ret;
1248 }
1249
1250 CRYPT_KEY_PROV_INFO *capi_get_prov_info(CAPI_CTX * ctx, PCCERT_CONTEXT cert)
1251 {
1252 DWORD len;
1253 CRYPT_KEY_PROV_INFO *pinfo;
1254
1255 if (!CertGetCertificateContextProperty
1256 (cert, CERT_KEY_PROV_INFO_PROP_ID, NULL, &len))
1257 return NULL;
1258 pinfo = OPENSSL_malloc(len);
1259 if (!pinfo) {
1260 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, ERR_R_MALLOC_FAILURE);
1261 return NULL;
1262 }
1263 if (!CertGetCertificateContextProperty
1264 (cert, CERT_KEY_PROV_INFO_PROP_ID, pinfo, &len)) {
1265 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO,
1266 CAPI_R_ERROR_GETTING_KEY_PROVIDER_INFO);
1267 capi_addlasterror();
1268 OPENSSL_free(pinfo);
1269 return NULL;
1270 }
1271 return pinfo;
1272 }
1273
1274 static void capi_dump_prov_info(CAPI_CTX * ctx, BIO *out,
1275 CRYPT_KEY_PROV_INFO * pinfo)
1276 {
1277 char *provname = NULL, *contname = NULL;
1278 if (!pinfo) {
1279 BIO_printf(out, " No Private Key\n");
1280 return;
1281 }
1282 provname = wide_to_asc(pinfo->pwszProvName);
1283 contname = wide_to_asc(pinfo->pwszContainerName);
1284 if (!provname || !contname)
1285 goto err;
1286
1287 BIO_printf(out, " Private Key Info:\n");
1288 BIO_printf(out, " Provider Name: %s, Provider Type %d\n", provname,
1289 pinfo->dwProvType);
1290 BIO_printf(out, " Container Name: %s, Key Type %d\n", contname,
1291 pinfo->dwKeySpec);
1292 err:
1293 if (provname)
1294 OPENSSL_free(provname);
1295 if (contname)
1296 OPENSSL_free(contname);
1297 }
1298
1299 char *capi_cert_get_fname(CAPI_CTX * ctx, PCCERT_CONTEXT cert)
1300 {
1301 LPWSTR wfname;
1302 DWORD dlen;
1303
1304 CAPI_trace(ctx, "capi_cert_get_fname\n");
1305 if (!CertGetCertificateContextProperty
1306 (cert, CERT_FRIENDLY_NAME_PROP_ID, NULL, &dlen))
1307 return NULL;
1308 wfname = OPENSSL_malloc(dlen);
1309 if (wfname == NULL) {
1310 CAPIerr(CAPI_F_CAPI_CERT_GET_FNAME, ERR_R_MALLOC_FAILURE);
1311 return NULL;
1312 }
1313 if (CertGetCertificateContextProperty
1314 (cert, CERT_FRIENDLY_NAME_PROP_ID, wfname, &dlen)) {
1315 char *fname = wide_to_asc(wfname);
1316 OPENSSL_free(wfname);
1317 return fname;
1318 }
1319 CAPIerr(CAPI_F_CAPI_CERT_GET_FNAME, CAPI_R_ERROR_GETTING_FRIENDLY_NAME);
1320 capi_addlasterror();
1321
1322 OPENSSL_free(wfname);
1323 return NULL;
1324 }
1325
1326 void capi_dump_cert(CAPI_CTX * ctx, BIO *out, PCCERT_CONTEXT cert)
1327 {
1328 X509 *x;
1329 unsigned char *p;
1330 unsigned long flags = ctx->dump_flags;
1331 if (flags & CAPI_DMP_FNAME) {
1332 char *fname;
1333 fname = capi_cert_get_fname(ctx, cert);
1334 if (fname) {
1335 BIO_printf(out, " Friendly Name \"%s\"\n", fname);
1336 OPENSSL_free(fname);
1337 } else
1338 BIO_printf(out, " <No Friendly Name>\n");
1339 }
1340
1341 p = cert->pbCertEncoded;
1342 x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1343 if (!x)
1344 BIO_printf(out, " <Can't parse certificate>\n");
1345 if (flags & CAPI_DMP_SUMMARY) {
1346 BIO_printf(out, " Subject: ");
1347 X509_NAME_print_ex(out, X509_get_subject_name(x), 0, XN_FLAG_ONELINE);
1348 BIO_printf(out, "\n Issuer: ");
1349 X509_NAME_print_ex(out, X509_get_issuer_name(x), 0, XN_FLAG_ONELINE);
1350 BIO_printf(out, "\n");
1351 }
1352 if (flags & CAPI_DMP_FULL)
1353 X509_print_ex(out, x, XN_FLAG_ONELINE, 0);
1354
1355 if (flags & CAPI_DMP_PKEYINFO) {
1356 CRYPT_KEY_PROV_INFO *pinfo;
1357 pinfo = capi_get_prov_info(ctx, cert);
1358 capi_dump_prov_info(ctx, out, pinfo);
1359 if (pinfo)
1360 OPENSSL_free(pinfo);
1361 }
1362
1363 if (flags & CAPI_DMP_PEM)
1364 PEM_write_bio_X509(out, x);
1365 X509_free(x);
1366 }
1367
1368 HCERTSTORE capi_open_store(CAPI_CTX * ctx, char *storename)
1369 {
1370 HCERTSTORE hstore;
1371
1372 if (!storename)
1373 storename = ctx->storename;
1374 if (!storename)
1375 storename = "MY";
1376 CAPI_trace(ctx, "Opening certificate store %s\n", storename);
1377
1378 hstore = CertOpenStore(CERT_STORE_PROV_SYSTEM_A, 0, 0,
1379 ctx->store_flags, storename);
1380 if (!hstore) {
1381 CAPIerr(CAPI_F_CAPI_OPEN_STORE, CAPI_R_ERROR_OPENING_STORE);
1382 capi_addlasterror();
1383 }
1384 return hstore;
1385 }
1386
1387 int capi_list_certs(CAPI_CTX * ctx, BIO *out, char *id)
1388 {
1389 char *storename;
1390 int idx;
1391 int ret = 1;
1392 HCERTSTORE hstore;
1393 PCCERT_CONTEXT cert = NULL;
1394
1395 storename = ctx->storename;
1396 if (!storename)
1397 storename = "MY";
1398 CAPI_trace(ctx, "Listing certs for store %s\n", storename);
1399
1400 hstore = capi_open_store(ctx, storename);
1401 if (!hstore)
1402 return 0;
1403 if (id) {
1404 cert = capi_find_cert(ctx, id, hstore);
1405 if (!cert) {
1406 ret = 0;
1407 goto err;
1408 }
1409 capi_dump_cert(ctx, out, cert);
1410 CertFreeCertificateContext(cert);
1411 } else {
1412 for (idx = 0;; idx++) {
1413 cert = CertEnumCertificatesInStore(hstore, cert);
1414 if (!cert)
1415 break;
1416 BIO_printf(out, "Certificate %d\n", idx);
1417 capi_dump_cert(ctx, out, cert);
1418 }
1419 }
1420 err:
1421 CertCloseStore(hstore, 0);
1422 return ret;
1423 }
1424
1425 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX * ctx, const char *id,
1426 HCERTSTORE hstore)
1427 {
1428 PCCERT_CONTEXT cert = NULL;
1429 char *fname = NULL;
1430 int match;
1431 switch (ctx->lookup_method) {
1432 case CAPI_LU_SUBSTR:
1433 return CertFindCertificateInStore(hstore,
1434 X509_ASN_ENCODING, 0,
1435 CERT_FIND_SUBJECT_STR_A, id, NULL);
1436 case CAPI_LU_FNAME:
1437 for (;;) {
1438 cert = CertEnumCertificatesInStore(hstore, cert);
1439 if (!cert)
1440 return NULL;
1441 fname = capi_cert_get_fname(ctx, cert);
1442 if (fname) {
1443 if (strcmp(fname, id))
1444 match = 0;
1445 else
1446 match = 1;
1447 OPENSSL_free(fname);
1448 if (match)
1449 return cert;
1450 }
1451 }
1452 default:
1453 return NULL;
1454 }
1455 }
1456
1457 static CAPI_KEY *capi_get_key(CAPI_CTX * ctx, const TCHAR *contname,
1458 TCHAR *provname, DWORD ptype, DWORD keyspec)
1459 {
1460 CAPI_KEY *key;
1461 DWORD dwFlags = 0;
1462 key = OPENSSL_malloc(sizeof(CAPI_KEY));
1463 if (key == NULL) {
1464 CAPIerr(CAPI_F_CAPI_GET_KEY, ERR_R_MALLOC_FAILURE);
1465 capi_addlasterror();
1466 goto err;
1467 }
1468 if (sizeof(TCHAR) == sizeof(char))
1469 CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n",
1470 contname, provname, ptype);
1471 else if (ctx && ctx->debug_level >= CAPI_DBG_TRACE && ctx->debug_file) {
1472 /* above 'if' is optimization to minimize malloc-ations */
1473 char *_contname = wide_to_asc((WCHAR *)contname);
1474 char *_provname = wide_to_asc((WCHAR *)provname);
1475
1476 CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n",
1477 _contname, _provname, ptype);
1478 if (_provname)
1479 OPENSSL_free(_provname);
1480 if (_contname)
1481 OPENSSL_free(_contname);
1482 }
1483 if (ctx->store_flags & CERT_SYSTEM_STORE_LOCAL_MACHINE)
1484 dwFlags = CRYPT_MACHINE_KEYSET;
1485 if (!CryptAcquireContext(&key->hprov, contname, provname, ptype, dwFlags)) {
1486 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1487 capi_addlasterror();
1488 goto err;
1489 }
1490 if (!CryptGetUserKey(key->hprov, keyspec, &key->key)) {
1491 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_GETUSERKEY_ERROR);
1492 capi_addlasterror();
1493 CryptReleaseContext(key->hprov, 0);
1494 goto err;
1495 }
1496 key->keyspec = keyspec;
1497 key->pcert = NULL;
1498 return key;
1499
1500 err:
1501 OPENSSL_free(key);
1502 return NULL;
1503 }
1504
1505 static CAPI_KEY *capi_get_cert_key(CAPI_CTX * ctx, PCCERT_CONTEXT cert)
1506 {
1507 CAPI_KEY *key = NULL;
1508 CRYPT_KEY_PROV_INFO *pinfo = NULL;
1509 char *provname = NULL, *contname = NULL;
1510 pinfo = capi_get_prov_info(ctx, cert);
1511 if (!pinfo)
1512 goto err;
1513 if (sizeof(TCHAR) != sizeof(char))
1514 key = capi_get_key(ctx, (TCHAR *)pinfo->pwszContainerName,
1515 (TCHAR *)pinfo->pwszProvName,
1516 pinfo->dwProvType, pinfo->dwKeySpec);
1517 else {
1518 provname = wide_to_asc(pinfo->pwszProvName);
1519 contname = wide_to_asc(pinfo->pwszContainerName);
1520 if (!provname || !contname)
1521 goto err;
1522 key = capi_get_key(ctx, (TCHAR *)contname, (TCHAR *)provname,
1523 pinfo->dwProvType, pinfo->dwKeySpec);
1524 }
1525
1526 err:
1527 if (pinfo)
1528 OPENSSL_free(pinfo);
1529 if (provname)
1530 OPENSSL_free(provname);
1531 if (contname)
1532 OPENSSL_free(contname);
1533 return key;
1534 }
1535
1536 CAPI_KEY *capi_find_key(CAPI_CTX * ctx, const char *id)
1537 {
1538 PCCERT_CONTEXT cert;
1539 HCERTSTORE hstore;
1540 CAPI_KEY *key = NULL;
1541 switch (ctx->lookup_method) {
1542 case CAPI_LU_SUBSTR:
1543 case CAPI_LU_FNAME:
1544 hstore = capi_open_store(ctx, NULL);
1545 if (!hstore)
1546 return NULL;
1547 cert = capi_find_cert(ctx, id, hstore);
1548 if (cert) {
1549 key = capi_get_cert_key(ctx, cert);
1550 CertFreeCertificateContext(cert);
1551 }
1552 CertCloseStore(hstore, 0);
1553 break;
1554
1555 case CAPI_LU_CONTNAME:
1556 if (sizeof(TCHAR) != sizeof(char)) {
1557 WCHAR *contname, *provname;
1558 DWORD len;
1559
1560 if ((len = MultiByteToWideChar(CP_ACP, 0, id, -1, NULL, 0)) &&
1561 (contname = alloca(len * sizeof(WCHAR)),
1562 MultiByteToWideChar(CP_ACP, 0, id, -1, contname, len)) &&
1563 (len =
1564 MultiByteToWideChar(CP_ACP, 0, ctx->cspname, -1, NULL, 0))
1565 && (provname =
1566 alloca(len * sizeof(WCHAR)), MultiByteToWideChar(CP_ACP,
1567 0,
1568 ctx->cspname,
1569 -1,
1570 provname,
1571 len)))
1572 key =
1573 capi_get_key(ctx, (TCHAR *)contname, (TCHAR *)provname,
1574 ctx->csptype, ctx->keytype);
1575 } else
1576 key = capi_get_key(ctx, (TCHAR *)id,
1577 (TCHAR *)ctx->cspname,
1578 ctx->csptype, ctx->keytype);
1579 break;
1580 }
1581
1582 return key;
1583 }
1584
1585 void capi_free_key(CAPI_KEY * key)
1586 {
1587 if (!key)
1588 return;
1589 CryptDestroyKey(key->key);
1590 CryptReleaseContext(key->hprov, 0);
1591 if (key->pcert)
1592 CertFreeCertificateContext(key->pcert);
1593 OPENSSL_free(key);
1594 }
1595
1596 /* Initialize a CAPI_CTX structure */
1597
1598 static CAPI_CTX *capi_ctx_new()
1599 {
1600 CAPI_CTX *ctx;
1601 ctx = OPENSSL_malloc(sizeof(CAPI_CTX));
1602 if (!ctx) {
1603 CAPIerr(CAPI_F_CAPI_CTX_NEW, ERR_R_MALLOC_FAILURE);
1604 return NULL;
1605 }
1606 ctx->cspname = NULL;
1607 ctx->csptype = PROV_RSA_FULL;
1608 ctx->dump_flags = CAPI_DMP_SUMMARY | CAPI_DMP_FNAME;
1609 ctx->keytype = AT_KEYEXCHANGE;
1610 ctx->storename = NULL;
1611 ctx->ssl_client_store = NULL;
1612 ctx->store_flags = CERT_STORE_OPEN_EXISTING_FLAG |
1613 CERT_STORE_READONLY_FLAG | CERT_SYSTEM_STORE_CURRENT_USER;
1614 ctx->lookup_method = CAPI_LU_SUBSTR;
1615 ctx->debug_level = 0;
1616 ctx->debug_file = NULL;
1617 ctx->client_cert_select = cert_select_simple;
1618 return ctx;
1619 }
1620
1621 static void capi_ctx_free(CAPI_CTX * ctx)
1622 {
1623 CAPI_trace(ctx, "Calling capi_ctx_free with %lx\n", ctx);
1624 if (!ctx)
1625 return;
1626 if (ctx->cspname)
1627 OPENSSL_free(ctx->cspname);
1628 if (ctx->debug_file)
1629 OPENSSL_free(ctx->debug_file);
1630 if (ctx->storename)
1631 OPENSSL_free(ctx->storename);
1632 if (ctx->ssl_client_store)
1633 OPENSSL_free(ctx->ssl_client_store);
1634 OPENSSL_free(ctx);
1635 }
1636
1637 static int capi_ctx_set_provname(CAPI_CTX * ctx, LPSTR pname, DWORD type,
1638 int check)
1639 {
1640 CAPI_trace(ctx, "capi_ctx_set_provname, name=%s, type=%d\n", pname, type);
1641 if (check) {
1642 HCRYPTPROV hprov;
1643 LPTSTR name = NULL;
1644
1645 if (sizeof(TCHAR) != sizeof(char)) {
1646 DWORD len;
1647 if ((len = MultiByteToWideChar(CP_ACP, 0, pname, -1, NULL, 0))) {
1648 name = alloca(len * sizeof(WCHAR));
1649 MultiByteToWideChar(CP_ACP, 0, pname, -1, (WCHAR *)name, len);
1650 }
1651 } else
1652 name = (TCHAR *)pname;
1653
1654 if (!name || !CryptAcquireContext(&hprov, NULL, name, type,
1655 CRYPT_VERIFYCONTEXT)) {
1656 CAPIerr(CAPI_F_CAPI_CTX_SET_PROVNAME,
1657 CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1658 capi_addlasterror();
1659 return 0;
1660 }
1661 CryptReleaseContext(hprov, 0);
1662 }
1663 if (ctx->cspname)
1664 OPENSSL_free(ctx->cspname);
1665 ctx->cspname = BUF_strdup(pname);
1666 ctx->csptype = type;
1667 return 1;
1668 }
1669
1670 static int capi_ctx_set_provname_idx(CAPI_CTX * ctx, int idx)
1671 {
1672 LPSTR pname;
1673 DWORD type;
1674 int res;
1675 if (capi_get_provname(ctx, &pname, &type, idx) != 1)
1676 return 0;
1677 res = capi_ctx_set_provname(ctx, pname, type, 0);
1678 OPENSSL_free(pname);
1679 return res;
1680 }
1681
1682 static int cert_issuer_match(STACK_OF(X509_NAME) *ca_dn, X509 *x)
1683 {
1684 int i;
1685 X509_NAME *nm;
1686 /* Special case: empty list: match anything */
1687 if (sk_X509_NAME_num(ca_dn) <= 0)
1688 return 1;
1689 for (i = 0; i < sk_X509_NAME_num(ca_dn); i++) {
1690 nm = sk_X509_NAME_value(ca_dn, i);
1691 if (!X509_NAME_cmp(nm, X509_get_issuer_name(x)))
1692 return 1;
1693 }
1694 return 0;
1695 }
1696
1697 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
1698 STACK_OF(X509_NAME) *ca_dn, X509 **pcert,
1699 EVP_PKEY **pkey, STACK_OF(X509) **pother,
1700 UI_METHOD *ui_method,
1701 void *callback_data)
1702 {
1703 STACK_OF(X509) *certs = NULL;
1704 X509 *x;
1705 char *storename;
1706 const char *p;
1707 int i, client_cert_idx;
1708 HCERTSTORE hstore;
1709 PCCERT_CONTEXT cert = NULL, excert = NULL;
1710 CAPI_CTX *ctx;
1711 CAPI_KEY *key;
1712 ctx = ENGINE_get_ex_data(e, capi_idx);
1713
1714 *pcert = NULL;
1715 *pkey = NULL;
1716
1717 storename = ctx->ssl_client_store;
1718 if (!storename)
1719 storename = "MY";
1720
1721 hstore = capi_open_store(ctx, storename);
1722 if (!hstore)
1723 return 0;
1724 /* Enumerate all certificates collect any matches */
1725 for (i = 0;; i++) {
1726 cert = CertEnumCertificatesInStore(hstore, cert);
1727 if (!cert)
1728 break;
1729 p = cert->pbCertEncoded;
1730 x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1731 if (!x) {
1732 CAPI_trace(ctx, "Can't Parse Certificate %d\n", i);
1733 continue;
1734 }
1735 if (cert_issuer_match(ca_dn, x)
1736 && X509_check_purpose(x, X509_PURPOSE_SSL_CLIENT, 0)) {
1737 key = capi_get_cert_key(ctx, cert);
1738 if (!key) {
1739 X509_free(x);
1740 continue;
1741 }
1742 /*
1743 * Match found: attach extra data to it so we can retrieve the
1744 * key later.
1745 */
1746 excert = CertDuplicateCertificateContext(cert);
1747 key->pcert = excert;
1748 X509_set_ex_data(x, cert_capi_idx, key);
1749
1750 if (!certs)
1751 certs = sk_X509_new_null();
1752
1753 sk_X509_push(certs, x);
1754 } else
1755 X509_free(x);
1756
1757 }
1758
1759 if (cert)
1760 CertFreeCertificateContext(cert);
1761 if (hstore)
1762 CertCloseStore(hstore, 0);
1763
1764 if (!certs)
1765 return 0;
1766
1767 /* Select the appropriate certificate */
1768
1769 client_cert_idx = ctx->client_cert_select(e, ssl, certs);
1770
1771 /* Set the selected certificate and free the rest */
1772
1773 for (i = 0; i < sk_X509_num(certs); i++) {
1774 x = sk_X509_value(certs, i);
1775 if (i == client_cert_idx)
1776 *pcert = x;
1777 else {
1778 key = X509_get_ex_data(x, cert_capi_idx);
1779 capi_free_key(key);
1780 X509_free(x);
1781 }
1782 }
1783
1784 sk_X509_free(certs);
1785
1786 if (!*pcert)
1787 return 0;
1788
1789 /* Setup key for selected certificate */
1790
1791 key = X509_get_ex_data(*pcert, cert_capi_idx);
1792 *pkey = capi_get_pkey(e, key);
1793 X509_set_ex_data(*pcert, cert_capi_idx, NULL);
1794
1795 return 1;
1796
1797 }
1798
1799 /* Simple client cert selection function: always select first */
1800
1801 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1802 {
1803 return 0;
1804 }
1805
1806 # ifdef OPENSSL_CAPIENG_DIALOG
1807
1808 /*
1809 * More complex cert selection function, using standard function
1810 * CryptUIDlgSelectCertificateFromStore() to produce a dialog box.
1811 */
1812
1813 /*
1814 * Definitions which are in cryptuiapi.h but this is not present in older
1815 * versions of headers.
1816 */
1817
1818 # ifndef CRYPTUI_SELECT_LOCATION_COLUMN
1819 # define CRYPTUI_SELECT_LOCATION_COLUMN 0x000000010
1820 # define CRYPTUI_SELECT_INTENDEDUSE_COLUMN 0x000000004
1821 # endif
1822
1823 # define dlg_title L"OpenSSL Application SSL Client Certificate Selection"
1824 # define dlg_prompt L"Select a certificate to use for authentication"
1825 # define dlg_columns CRYPTUI_SELECT_LOCATION_COLUMN \
1826 |CRYPTUI_SELECT_INTENDEDUSE_COLUMN
1827
1828 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1829 {
1830 X509 *x;
1831 HCERTSTORE dstore;
1832 PCCERT_CONTEXT cert;
1833 CAPI_CTX *ctx;
1834 CAPI_KEY *key;
1835 HWND hwnd;
1836 int i, idx = -1;
1837 if (sk_X509_num(certs) == 1)
1838 return 0;
1839 ctx = ENGINE_get_ex_data(e, capi_idx);
1840 /* Create an in memory store of certificates */
1841 dstore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
1842 CERT_STORE_CREATE_NEW_FLAG, NULL);
1843 if (!dstore) {
1844 CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_CREATING_STORE);
1845 capi_addlasterror();
1846 goto err;
1847 }
1848 /* Add all certificates to store */
1849 for (i = 0; i < sk_X509_num(certs); i++) {
1850 x = sk_X509_value(certs, i);
1851 key = X509_get_ex_data(x, cert_capi_idx);
1852
1853 if (!CertAddCertificateContextToStore(dstore, key->pcert,
1854 CERT_STORE_ADD_NEW, NULL)) {
1855 CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_ADDING_CERT);
1856 capi_addlasterror();
1857 goto err;
1858 }
1859
1860 }
1861 hwnd = GetForegroundWindow();
1862 if (!hwnd)
1863 hwnd = GetActiveWindow();
1864 if (!hwnd && ctx->getconswindow)
1865 hwnd = ctx->getconswindow();
1866 /* Call dialog to select one */
1867 cert = ctx->certselectdlg(dstore, hwnd, dlg_title, dlg_prompt,
1868 dlg_columns, 0, NULL);
1869
1870 /* Find matching cert from list */
1871 if (cert) {
1872 for (i = 0; i < sk_X509_num(certs); i++) {
1873 x = sk_X509_value(certs, i);
1874 key = X509_get_ex_data(x, cert_capi_idx);
1875 if (CertCompareCertificate
1876 (X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, cert->pCertInfo,
1877 key->pcert->pCertInfo)) {
1878 idx = i;
1879 break;
1880 }
1881 }
1882 }
1883
1884 err:
1885 if (dstore)
1886 CertCloseStore(dstore, 0);
1887 return idx;
1888
1889 }
1890 # endif
1891
1892 #else /* !__COMPILE_CAPIENG */
1893 # include <openssl/engine.h>
1894 # ifndef OPENSSL_NO_DYNAMIC_ENGINE
1895 OPENSSL_EXPORT
1896 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns);
1897 OPENSSL_EXPORT
1898 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns)
1899 {
1900 return 0;
1901 }
1902
1903 IMPLEMENT_DYNAMIC_CHECK_FN()
1904 # else
1905 void ENGINE_load_capi(void)
1906 {
1907 }
1908 # endif
1909 #endif