1 /*
2 * Copyright 2008-2025 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 /* We need to use some deprecated APIs */
11 #define OPENSSL_SUPPRESS_DEPRECATED
12
13 #ifdef _WIN32
14 #ifndef _WIN32_WINNT
15 #define _WIN32_WINNT 0x0400
16 #endif
17 #include <windows.h>
18 #include <wincrypt.h>
19
20 #include <stdio.h>
21 #include <string.h>
22 #include <stdlib.h>
23 #include <malloc.h>
24 #ifndef alloca
25 #define alloca _alloca
26 #endif
27
28 #include <openssl/crypto.h>
29
30 #ifndef OPENSSL_NO_CAPIENG
31
32 #include <openssl/buffer.h>
33 #include <openssl/bn.h>
34 #include <openssl/rsa.h>
35 #include <openssl/dsa.h>
36
37 /*
38 * This module uses several "new" interfaces, among which is
39 * CertGetCertificateContextProperty. CERT_KEY_PROV_INFO_PROP_ID is
40 * one of possible values you can pass to function in question. By
41 * checking if it's defined we can see if wincrypt.h and accompanying
42 * crypt32.lib are in shape. The native MingW32 headers up to and
43 * including __W32API_VERSION 3.14 lack of struct DSSPUBKEY and the
44 * defines CERT_STORE_PROV_SYSTEM_A and CERT_STORE_READONLY_FLAG,
45 * so we check for these too and avoid compiling.
46 * Yes, it's rather "weak" test and if compilation fails,
47 * then re-configure with -DOPENSSL_NO_CAPIENG.
48 */
49 #if defined(CERT_KEY_PROV_INFO_PROP_ID) && defined(CERT_STORE_PROV_SYSTEM_A) && defined(CERT_STORE_READONLY_FLAG)
50 #define __COMPILE_CAPIENG
51 #endif /* CERT_KEY_PROV_INFO_PROP_ID */
52 #endif /* OPENSSL_NO_CAPIENG */
53 #endif /* _WIN32 */
54
55 #ifdef __COMPILE_CAPIENG
56
57 #undef X509_EXTENSIONS
58
59 /* Definitions which may be missing from earlier version of headers */
60 #ifndef CERT_STORE_OPEN_EXISTING_FLAG
61 #define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
62 #endif
63
64 #ifndef CERT_STORE_CREATE_NEW_FLAG
65 #define CERT_STORE_CREATE_NEW_FLAG 0x00002000
66 #endif
67
68 #ifndef CERT_SYSTEM_STORE_CURRENT_USER
69 #define CERT_SYSTEM_STORE_CURRENT_USER 0x00010000
70 #endif
71
72 #ifndef ALG_SID_SHA_256
73 #define ALG_SID_SHA_256 12
74 #endif
75 #ifndef ALG_SID_SHA_384
76 #define ALG_SID_SHA_384 13
77 #endif
78 #ifndef ALG_SID_SHA_512
79 #define ALG_SID_SHA_512 14
80 #endif
81
82 #ifndef CALG_SHA_256
83 #define CALG_SHA_256 (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_256)
84 #endif
85 #ifndef CALG_SHA_384
86 #define CALG_SHA_384 (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_384)
87 #endif
88 #ifndef CALG_SHA_512
89 #define CALG_SHA_512 (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_512)
90 #endif
91
92 #ifndef PROV_RSA_AES
93 #define PROV_RSA_AES 24
94 #endif
95
96 #include <openssl/engine.h>
97 #include <openssl/pem.h>
98 #include <openssl/x509v3.h>
99
100 /* clang-format off */
101 # include "e_capi_err.h"
102 # include "e_capi_err.c"
103 /* clang-format on */
104
105 static const char *engine_capi_id = "capi";
106 static const char *engine_capi_name = "CryptoAPI ENGINE";
107
108 typedef struct CAPI_CTX_st CAPI_CTX;
109 typedef struct CAPI_KEY_st CAPI_KEY;
110
111 static void capi_addlasterror(void);
112 static void capi_adderror(DWORD err);
113
114 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...);
115
116 static int capi_list_providers(CAPI_CTX *ctx, BIO *out);
117 static int capi_list_containers(CAPI_CTX *ctx, BIO *out);
118 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *storename);
119 void capi_free_key(CAPI_KEY *key);
120
121 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id,
122 HCERTSTORE hstore);
123
124 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id);
125
126 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
127 UI_METHOD *ui_method, void *callback_data);
128 static int capi_rsa_sign(int dtype, const unsigned char *m,
129 unsigned int m_len, unsigned char *sigret,
130 unsigned int *siglen, const RSA *rsa);
131 static int capi_rsa_priv_enc(int flen, const unsigned char *from,
132 unsigned char *to, RSA *rsa, int padding);
133 static int capi_rsa_priv_dec(int flen, const unsigned char *from,
134 unsigned char *to, RSA *rsa, int padding);
135 static int capi_rsa_free(RSA *rsa);
136
137 #ifndef OPENSSL_NO_DSA
138 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
139 DSA *dsa);
140 static int capi_dsa_free(DSA *dsa);
141 #endif
142
143 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
144 STACK_OF(X509_NAME) *ca_dn, X509 **pcert,
145 EVP_PKEY **pkey, STACK_OF(X509) **pother,
146 UI_METHOD *ui_method,
147 void *callback_data);
148
149 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
150 #ifdef OPENSSL_CAPIENG_DIALOG
151 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
152 #endif
153
154 void engine_load_capi_int(void);
155
156 typedef PCCERT_CONTEXT(WINAPI *CERTDLG)(HCERTSTORE, HWND, LPCWSTR,
157 LPCWSTR, DWORD, DWORD, void *);
158 typedef HWND(WINAPI *GETCONSWIN)(void);
159
160 /*
161 * This structure contains CAPI ENGINE specific data: it contains various
162 * global options and affects how other functions behave.
163 */
164
165 #define CAPI_DBG_TRACE 2
166 #define CAPI_DBG_ERROR 1
167
168 struct CAPI_CTX_st {
169 int debug_level;
170 char *debug_file;
171 /* Parameters to use for container lookup */
172 DWORD keytype;
173 LPSTR cspname;
174 DWORD csptype;
175 /* Certificate store name to use */
176 LPSTR storename;
177 LPSTR ssl_client_store;
178 /* System store flags */
179 DWORD store_flags;
180 /* Lookup string meanings in load_private_key */
181 #define CAPI_LU_SUBSTR 1 /* Substring of subject: uses "storename" */
182 #define CAPI_LU_FNAME 2 /* Friendly name: uses storename */
183 #define CAPI_LU_CONTNAME 3 /* Container name: uses cspname, keytype */
184 int lookup_method;
185 /* Info to dump with dumpcerts option */
186 #define CAPI_DMP_SUMMARY 0x1 /* Issuer and serial name strings */
187 #define CAPI_DMP_FNAME 0x2 /* Friendly name */
188 #define CAPI_DMP_FULL 0x4 /* Full X509_print dump */
189 #define CAPI_DMP_PEM 0x8 /* Dump PEM format certificate */
190 #define CAPI_DMP_PSKEY 0x10 /* Dump pseudo key (if possible) */
191 #define CAPI_DMP_PKEYINFO 0x20 /* Dump key info (if possible) */
192 DWORD dump_flags;
193 int (*client_cert_select)(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
194 CERTDLG certselectdlg;
195 GETCONSWIN getconswindow;
196 };
197
198 static CAPI_CTX *capi_ctx_new(void);
199 static void capi_ctx_free(CAPI_CTX *ctx);
200 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type,
201 int check);
202 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx);
203
204 #define CAPI_CMD_LIST_CERTS ENGINE_CMD_BASE
205 #define CAPI_CMD_LOOKUP_CERT (ENGINE_CMD_BASE + 1)
206 #define CAPI_CMD_DEBUG_LEVEL (ENGINE_CMD_BASE + 2)
207 #define CAPI_CMD_DEBUG_FILE (ENGINE_CMD_BASE + 3)
208 #define CAPI_CMD_KEYTYPE (ENGINE_CMD_BASE + 4)
209 #define CAPI_CMD_LIST_CSPS (ENGINE_CMD_BASE + 5)
210 #define CAPI_CMD_SET_CSP_IDX (ENGINE_CMD_BASE + 6)
211 #define CAPI_CMD_SET_CSP_NAME (ENGINE_CMD_BASE + 7)
212 #define CAPI_CMD_SET_CSP_TYPE (ENGINE_CMD_BASE + 8)
213 #define CAPI_CMD_LIST_CONTAINERS (ENGINE_CMD_BASE + 9)
214 #define CAPI_CMD_LIST_OPTIONS (ENGINE_CMD_BASE + 10)
215 #define CAPI_CMD_LOOKUP_METHOD (ENGINE_CMD_BASE + 11)
216 #define CAPI_CMD_STORE_NAME (ENGINE_CMD_BASE + 12)
217 #define CAPI_CMD_STORE_FLAGS (ENGINE_CMD_BASE + 13)
218
219 static const ENGINE_CMD_DEFN capi_cmd_defns[] = {
220 { CAPI_CMD_LIST_CERTS,
221 "list_certs",
222 "List all certificates in store",
223 ENGINE_CMD_FLAG_NO_INPUT },
224 { CAPI_CMD_LOOKUP_CERT,
225 "lookup_cert",
226 "Lookup and output certificates",
227 ENGINE_CMD_FLAG_STRING },
228 { CAPI_CMD_DEBUG_LEVEL,
229 "debug_level",
230 "debug level (1=errors, 2=trace)",
231 ENGINE_CMD_FLAG_NUMERIC },
232 { CAPI_CMD_DEBUG_FILE,
233 "debug_file",
234 "debugging filename)",
235 ENGINE_CMD_FLAG_STRING },
236 { CAPI_CMD_KEYTYPE,
237 "key_type",
238 "Key type: 1=AT_KEYEXCHANGE (default), 2=AT_SIGNATURE",
239 ENGINE_CMD_FLAG_NUMERIC },
240 { CAPI_CMD_LIST_CSPS,
241 "list_csps",
242 "List all CSPs",
243 ENGINE_CMD_FLAG_NO_INPUT },
244 { CAPI_CMD_SET_CSP_IDX,
245 "csp_idx",
246 "Set CSP by index",
247 ENGINE_CMD_FLAG_NUMERIC },
248 { CAPI_CMD_SET_CSP_NAME,
249 "csp_name",
250 "Set CSP name, (default CSP used if not specified)",
251 ENGINE_CMD_FLAG_STRING },
252 { CAPI_CMD_SET_CSP_TYPE,
253 "csp_type",
254 "Set CSP type, (default RSA_PROV_FULL)",
255 ENGINE_CMD_FLAG_NUMERIC },
256 { CAPI_CMD_LIST_CONTAINERS,
257 "list_containers",
258 "list container names",
259 ENGINE_CMD_FLAG_NO_INPUT },
260 { CAPI_CMD_LIST_OPTIONS,
261 "list_options",
262 "Set list options (1=summary,2=friendly name, 4=full printout, 8=PEM output, 16=XXX, "
263 "32=private key info)",
264 ENGINE_CMD_FLAG_NUMERIC },
265 { CAPI_CMD_LOOKUP_METHOD,
266 "lookup_method",
267 "Set key lookup method (1=substring, 2=friendlyname, 3=container name)",
268 ENGINE_CMD_FLAG_NUMERIC },
269 { CAPI_CMD_STORE_NAME,
270 "store_name",
271 "certificate store name, default \"MY\"",
272 ENGINE_CMD_FLAG_STRING },
273 { CAPI_CMD_STORE_FLAGS,
274 "store_flags",
275 "Certificate store flags: 1 = system store",
276 ENGINE_CMD_FLAG_NUMERIC },
277
278 { 0, NULL, NULL, 0 }
279 };
280
281 static int capi_idx = -1;
282 static int rsa_capi_idx = -1;
283 static int dsa_capi_idx = -1;
284 static int cert_capi_idx = -1;
285
capi_ctrl(ENGINE * e,int cmd,long i,void * p,void (* f)(void))286 static int capi_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
287 {
288 int ret = 1;
289 CAPI_CTX *ctx;
290 BIO *out;
291 LPSTR tmpstr;
292 if (capi_idx == -1) {
293 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_ENGINE_NOT_INITIALIZED);
294 return 0;
295 }
296 ctx = ENGINE_get_ex_data(e, capi_idx);
297 out = BIO_new_fp(stdout, BIO_NOCLOSE);
298 if (out == NULL) {
299 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_FILE_OPEN_ERROR);
300 return 0;
301 }
302 switch (cmd) {
303 case CAPI_CMD_LIST_CSPS:
304 ret = capi_list_providers(ctx, out);
305 break;
306
307 case CAPI_CMD_LIST_CERTS:
308 ret = capi_list_certs(ctx, out, NULL);
309 break;
310
311 case CAPI_CMD_LOOKUP_CERT:
312 ret = capi_list_certs(ctx, out, p);
313 break;
314
315 case CAPI_CMD_LIST_CONTAINERS:
316 ret = capi_list_containers(ctx, out);
317 break;
318
319 case CAPI_CMD_STORE_NAME:
320 tmpstr = OPENSSL_strdup(p);
321 if (tmpstr != NULL) {
322 OPENSSL_free(ctx->storename);
323 ctx->storename = tmpstr;
324 CAPI_trace(ctx, "Setting store name to %s\n", p);
325 } else {
326 ret = 0;
327 }
328 break;
329
330 case CAPI_CMD_STORE_FLAGS:
331 if (i & 1) {
332 ctx->store_flags |= CERT_SYSTEM_STORE_LOCAL_MACHINE;
333 ctx->store_flags &= ~CERT_SYSTEM_STORE_CURRENT_USER;
334 } else {
335 ctx->store_flags |= CERT_SYSTEM_STORE_CURRENT_USER;
336 ctx->store_flags &= ~CERT_SYSTEM_STORE_LOCAL_MACHINE;
337 }
338 CAPI_trace(ctx, "Setting flags to %d\n", i);
339 break;
340
341 case CAPI_CMD_DEBUG_LEVEL:
342 ctx->debug_level = (int)i;
343 CAPI_trace(ctx, "Setting debug level to %d\n", ctx->debug_level);
344 break;
345
346 case CAPI_CMD_DEBUG_FILE:
347 tmpstr = OPENSSL_strdup(p);
348 if (tmpstr != NULL) {
349 ctx->debug_file = tmpstr;
350 CAPI_trace(ctx, "Setting debug file to %s\n", ctx->debug_file);
351 } else {
352 ret = 0;
353 }
354 break;
355
356 case CAPI_CMD_KEYTYPE:
357 ctx->keytype = i;
358 CAPI_trace(ctx, "Setting key type to %d\n", ctx->keytype);
359 break;
360
361 case CAPI_CMD_SET_CSP_IDX:
362 ret = capi_ctx_set_provname_idx(ctx, i);
363 break;
364
365 case CAPI_CMD_LIST_OPTIONS:
366 ctx->dump_flags = i;
367 break;
368
369 case CAPI_CMD_LOOKUP_METHOD:
370 if (i < 1 || i > 3) {
371 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_INVALID_LOOKUP_METHOD);
372 BIO_free(out);
373 return 0;
374 }
375 ctx->lookup_method = i;
376 break;
377
378 case CAPI_CMD_SET_CSP_NAME:
379 ret = capi_ctx_set_provname(ctx, p, ctx->csptype, 1);
380 break;
381
382 case CAPI_CMD_SET_CSP_TYPE:
383 ctx->csptype = i;
384 break;
385
386 default:
387 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_UNKNOWN_COMMAND);
388 ret = 0;
389 }
390
391 BIO_free(out);
392 return ret;
393 }
394
395 static RSA_METHOD *capi_rsa_method = NULL;
396 #ifndef OPENSSL_NO_DSA
397 static DSA_METHOD *capi_dsa_method = NULL;
398 #endif
399
400 static int use_aes_csp = 0;
401 static const WCHAR rsa_aes_cspname[] = L"Microsoft Enhanced RSA and AES Cryptographic Provider";
402 static const WCHAR rsa_enh_cspname[] = L"Microsoft Enhanced Cryptographic Provider v1.0";
403
capi_init(ENGINE * e)404 static int capi_init(ENGINE *e)
405 {
406 CAPI_CTX *ctx;
407 const RSA_METHOD *ossl_rsa_meth;
408 #ifndef OPENSSL_NO_DSA
409 const DSA_METHOD *ossl_dsa_meth;
410 #endif
411 HCRYPTPROV hprov;
412
413 if (capi_idx < 0) {
414 capi_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, 0);
415 if (capi_idx < 0) {
416 CAPIerr(CAPI_F_CAPI_INIT, ERR_R_ENGINE_LIB);
417 goto err;
418 }
419
420 cert_capi_idx = X509_get_ex_new_index(0, NULL, NULL, NULL, 0);
421
422 /* Setup RSA_METHOD */
423 rsa_capi_idx = RSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
424 ossl_rsa_meth = RSA_PKCS1_OpenSSL();
425 if (!RSA_meth_set_pub_enc(capi_rsa_method,
426 RSA_meth_get_pub_enc(ossl_rsa_meth))
427 || !RSA_meth_set_pub_dec(capi_rsa_method,
428 RSA_meth_get_pub_dec(ossl_rsa_meth))
429 || !RSA_meth_set_priv_enc(capi_rsa_method, capi_rsa_priv_enc)
430 || !RSA_meth_set_priv_dec(capi_rsa_method, capi_rsa_priv_dec)
431 || !RSA_meth_set_mod_exp(capi_rsa_method,
432 RSA_meth_get_mod_exp(ossl_rsa_meth))
433 || !RSA_meth_set_bn_mod_exp(capi_rsa_method,
434 RSA_meth_get_bn_mod_exp(ossl_rsa_meth))
435 || !RSA_meth_set_finish(capi_rsa_method, capi_rsa_free)
436 || !RSA_meth_set_sign(capi_rsa_method, capi_rsa_sign)) {
437 CAPIerr(CAPI_F_CAPI_INIT, ERR_R_RSA_LIB);
438 goto err;
439 }
440
441 #ifndef OPENSSL_NO_DSA
442 /* Setup DSA Method */
443 dsa_capi_idx = DSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
444 ossl_dsa_meth = DSA_OpenSSL();
445 if (!DSA_meth_set_sign(capi_dsa_method, capi_dsa_do_sign)
446 || !DSA_meth_set_verify(capi_dsa_method,
447 DSA_meth_get_verify(ossl_dsa_meth))
448 || !DSA_meth_set_finish(capi_dsa_method, capi_dsa_free)
449 || !DSA_meth_set_mod_exp(capi_dsa_method,
450 DSA_meth_get_mod_exp(ossl_dsa_meth))
451 || !DSA_meth_set_bn_mod_exp(capi_dsa_method,
452 DSA_meth_get_bn_mod_exp(ossl_dsa_meth))) {
453 CAPIerr(CAPI_F_CAPI_INIT, ERR_R_DSA_LIB);
454 goto err;
455 }
456 #endif
457 }
458
459 ctx = capi_ctx_new();
460 if (ctx == NULL) {
461 CAPIerr(CAPI_F_CAPI_INIT, ERR_R_CAPI_LIB);
462 goto err;
463 }
464
465 ENGINE_set_ex_data(e, capi_idx, ctx);
466
467 #ifdef OPENSSL_CAPIENG_DIALOG
468 {
469 HMODULE cryptui = LoadLibrary(TEXT("CRYPTUI.DLL"));
470 HMODULE kernel = GetModuleHandle(TEXT("KERNEL32.DLL"));
471 if (cryptui)
472 ctx->certselectdlg = (CERTDLG)GetProcAddress(cryptui,
473 "CryptUIDlgSelectCertificateFromStore");
474 if (kernel)
475 ctx->getconswindow = (GETCONSWIN)GetProcAddress(kernel, "GetConsoleWindow");
476 if (cryptui && !OPENSSL_isservice())
477 ctx->client_cert_select = cert_select_dialog;
478 }
479 #endif
480
481 /* See if there is RSA+AES CSP */
482 if (CryptAcquireContextW(&hprov, NULL, rsa_aes_cspname, PROV_RSA_AES,
483 CRYPT_VERIFYCONTEXT)) {
484 use_aes_csp = 1;
485 CryptReleaseContext(hprov, 0);
486 }
487
488 return 1;
489
490 err:
491 return 0;
492 }
493
capi_destroy(ENGINE * e)494 static int capi_destroy(ENGINE *e)
495 {
496 RSA_meth_free(capi_rsa_method);
497 capi_rsa_method = NULL;
498 #ifndef OPENSSL_NO_DSA
499 DSA_meth_free(capi_dsa_method);
500 capi_dsa_method = NULL;
501 #endif
502 ERR_unload_CAPI_strings();
503 return 1;
504 }
505
capi_finish(ENGINE * e)506 static int capi_finish(ENGINE *e)
507 {
508 CAPI_CTX *ctx;
509 ctx = ENGINE_get_ex_data(e, capi_idx);
510 capi_ctx_free(ctx);
511 ENGINE_set_ex_data(e, capi_idx, NULL);
512 return 1;
513 }
514
515 /*
516 * CryptoAPI key application data. This contains a handle to the private key
517 * container (for sign operations) and a handle to the key (for decrypt
518 * operations).
519 */
520
521 struct CAPI_KEY_st {
522 /* Associated certificate context (if any) */
523 PCCERT_CONTEXT pcert;
524 HCRYPTPROV hprov;
525 HCRYPTKEY key;
526 DWORD keyspec;
527 };
528
bind_capi(ENGINE * e)529 static int bind_capi(ENGINE *e)
530 {
531 capi_rsa_method = RSA_meth_new("CryptoAPI RSA method", 0);
532 if (capi_rsa_method == NULL)
533 return 0;
534 #ifndef OPENSSL_NO_DSA
535 capi_dsa_method = DSA_meth_new("CryptoAPI DSA method", 0);
536 if (capi_dsa_method == NULL)
537 goto memerr;
538 #endif
539 if (!ENGINE_set_id(e, engine_capi_id)
540 || !ENGINE_set_name(e, engine_capi_name)
541 || !ENGINE_set_flags(e, ENGINE_FLAGS_NO_REGISTER_ALL)
542 || !ENGINE_set_init_function(e, capi_init)
543 || !ENGINE_set_finish_function(e, capi_finish)
544 || !ENGINE_set_destroy_function(e, capi_destroy)
545 || !ENGINE_set_RSA(e, capi_rsa_method)
546 #ifndef OPENSSL_NO_DSA
547 || !ENGINE_set_DSA(e, capi_dsa_method)
548 #endif
549 || !ENGINE_set_load_privkey_function(e, capi_load_privkey)
550 || !ENGINE_set_load_ssl_client_cert_function(e,
551 capi_load_ssl_client_cert)
552 || !ENGINE_set_cmd_defns(e, capi_cmd_defns)
553 || !ENGINE_set_ctrl_function(e, capi_ctrl))
554 goto memerr;
555 ERR_load_CAPI_strings();
556
557 return 1;
558 memerr:
559 RSA_meth_free(capi_rsa_method);
560 capi_rsa_method = NULL;
561 #ifndef OPENSSL_NO_DSA
562 DSA_meth_free(capi_dsa_method);
563 capi_dsa_method = NULL;
564 #endif
565 return 0;
566 }
567
568 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
bind_helper(ENGINE * e,const char * id)569 static int bind_helper(ENGINE *e, const char *id)
570 {
571 if (id && (strcmp(id, engine_capi_id) != 0))
572 return 0;
573 if (!bind_capi(e))
574 return 0;
575 return 1;
576 }
577
578 IMPLEMENT_DYNAMIC_CHECK_FN()
IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)579 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
580 #else
581 static ENGINE *engine_capi(void)
582 {
583 ENGINE *ret = ENGINE_new();
584 if (ret == NULL)
585 return NULL;
586 if (!bind_capi(ret)) {
587 ENGINE_free(ret);
588 return NULL;
589 }
590 return ret;
591 }
592
593 void engine_load_capi_int(void)
594 {
595 /* Copied from eng_[openssl|dyn].c */
596 ENGINE *toadd = engine_capi();
597 if (!toadd)
598 return;
599 ERR_set_mark();
600 ENGINE_add(toadd);
601 /*
602 * If the "add" worked, it gets a structural reference. So either way, we
603 * release our just-created reference.
604 */
605 ENGINE_free(toadd);
606 /*
607 * If the "add" didn't work, it was probably a conflict because it was
608 * already added (eg. someone calling ENGINE_load_blah then calling
609 * ENGINE_load_builtin_engines() perhaps).
610 */
611 ERR_pop_to_mark();
612 }
613 #endif
614
615 static int lend_tobn(BIGNUM *bn, unsigned char *bin, int binlen)
616 {
617 int i;
618 /*
619 * Reverse buffer in place: since this is a keyblob structure that will
620 * be freed up after conversion anyway it doesn't matter if we change
621 * it.
622 */
623 for (i = 0; i < binlen / 2; i++) {
624 unsigned char c;
625 c = bin[i];
626 bin[i] = bin[binlen - i - 1];
627 bin[binlen - i - 1] = c;
628 }
629
630 if (!BN_bin2bn(bin, binlen, bn))
631 return 0;
632 return 1;
633 }
634
635 /* Given a CAPI_KEY get an EVP_PKEY structure */
636
capi_get_pkey(ENGINE * eng,CAPI_KEY * key)637 static EVP_PKEY *capi_get_pkey(ENGINE *eng, CAPI_KEY *key)
638 {
639 unsigned char *pubkey = NULL;
640 DWORD len;
641 BLOBHEADER *bh;
642 RSA *rkey = NULL;
643 DSA *dkey = NULL;
644 EVP_PKEY *ret = NULL;
645 if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, NULL, &len)) {
646 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_LENGTH_ERROR);
647 capi_addlasterror();
648 return NULL;
649 }
650
651 pubkey = OPENSSL_malloc(len);
652
653 if (pubkey == NULL)
654 goto err;
655
656 if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, pubkey, &len)) {
657 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_ERROR);
658 capi_addlasterror();
659 goto err;
660 }
661
662 bh = (BLOBHEADER *)pubkey;
663 if (bh->bType != PUBLICKEYBLOB) {
664 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_PUBLIC_KEY_BLOB);
665 goto err;
666 }
667 if (bh->aiKeyAlg == CALG_RSA_SIGN || bh->aiKeyAlg == CALG_RSA_KEYX) {
668 RSAPUBKEY *rp;
669 DWORD rsa_modlen;
670 BIGNUM *e = NULL, *n = NULL;
671 unsigned char *rsa_modulus;
672 rp = (RSAPUBKEY *)(bh + 1);
673 if (rp->magic != 0x31415352) {
674 char magstr[10];
675 BIO_snprintf(magstr, 10, "%lx", rp->magic);
676 CAPIerr(CAPI_F_CAPI_GET_PKEY,
677 CAPI_R_INVALID_RSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
678 ERR_add_error_data(2, "magic=0x", magstr);
679 goto err;
680 }
681 rsa_modulus = (unsigned char *)(rp + 1);
682 rkey = RSA_new_method(eng);
683 if (!rkey) {
684 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_RSA_LIB);
685 goto err;
686 }
687
688 e = BN_new();
689 n = BN_new();
690
691 if (e == NULL || n == NULL) {
692 BN_free(e);
693 BN_free(n);
694 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_BN_LIB);
695 goto err;
696 }
697
698 RSA_set0_key(rkey, n, e, NULL);
699
700 if (!BN_set_word(e, rp->pubexp)) {
701 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_BN_LIB);
702 goto err;
703 }
704
705 rsa_modlen = rp->bitlen / 8;
706 if (!lend_tobn(n, rsa_modulus, rsa_modlen)) {
707 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_BN_LIB);
708 goto err;
709 }
710
711 RSA_set_ex_data(rkey, rsa_capi_idx, key);
712
713 if ((ret = EVP_PKEY_new()) == NULL) {
714 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_EVP_LIB);
715 goto err;
716 }
717
718 EVP_PKEY_assign_RSA(ret, rkey);
719 rkey = NULL;
720
721 #ifndef OPENSSL_NO_DSA
722 } else if (bh->aiKeyAlg == CALG_DSS_SIGN) {
723 DSSPUBKEY *dp;
724 DWORD dsa_plen;
725 unsigned char *btmp;
726 BIGNUM *p, *q, *g, *pub_key;
727 dp = (DSSPUBKEY *)(bh + 1);
728 if (dp->magic != 0x31535344) {
729 char magstr[10];
730 BIO_snprintf(magstr, 10, "%lx", dp->magic);
731 CAPIerr(CAPI_F_CAPI_GET_PKEY,
732 CAPI_R_INVALID_DSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
733 ERR_add_error_data(2, "magic=0x", magstr);
734 goto err;
735 }
736 dsa_plen = dp->bitlen / 8;
737 btmp = (unsigned char *)(dp + 1);
738 dkey = DSA_new_method(eng);
739 if (!dkey) {
740 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_DSA_LIB);
741 goto err;
742 }
743 p = BN_new();
744 q = BN_new();
745 g = BN_new();
746 pub_key = BN_new();
747 if (p == NULL || q == NULL || g == NULL || pub_key == NULL) {
748 BN_free(p);
749 BN_free(q);
750 BN_free(g);
751 BN_free(pub_key);
752 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_BN_LIB);
753 goto err;
754 }
755 DSA_set0_pqg(dkey, p, q, g);
756 DSA_set0_key(dkey, pub_key, NULL);
757 if (!lend_tobn(p, btmp, dsa_plen)) {
758 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_CAPI_LIB);
759 goto err;
760 }
761 btmp += dsa_plen;
762 if (!lend_tobn(q, btmp, 20)) {
763 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_CAPI_LIB);
764 goto err;
765 }
766 btmp += 20;
767 if (!lend_tobn(g, btmp, dsa_plen)) {
768 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_CAPI_LIB);
769 goto err;
770 }
771 btmp += dsa_plen;
772 if (!lend_tobn(pub_key, btmp, dsa_plen)) {
773 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_CAPI_LIB);
774 goto err;
775 }
776 btmp += dsa_plen;
777
778 DSA_set_ex_data(dkey, dsa_capi_idx, key);
779
780 if ((ret = EVP_PKEY_new()) == NULL) {
781 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_EVP_LIB);
782 goto err;
783 }
784
785 EVP_PKEY_assign_DSA(ret, dkey);
786 dkey = NULL;
787 #endif
788 } else {
789 char algstr[10];
790 BIO_snprintf(algstr, 10, "%ux", bh->aiKeyAlg);
791 CAPIerr(CAPI_F_CAPI_GET_PKEY,
792 CAPI_R_UNSUPPORTED_PUBLIC_KEY_ALGORITHM);
793 ERR_add_error_data(2, "aiKeyAlg=0x", algstr);
794 goto err;
795 }
796
797 err:
798 OPENSSL_free(pubkey);
799 if (!ret) {
800 RSA_free(rkey);
801 #ifndef OPENSSL_NO_DSA
802 DSA_free(dkey);
803 #endif
804 }
805
806 return ret;
807 }
808
capi_load_privkey(ENGINE * eng,const char * key_id,UI_METHOD * ui_method,void * callback_data)809 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
810 UI_METHOD *ui_method, void *callback_data)
811 {
812 CAPI_CTX *ctx;
813 CAPI_KEY *key;
814 EVP_PKEY *ret;
815 ctx = ENGINE_get_ex_data(eng, capi_idx);
816
817 if (!ctx) {
818 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_CANT_FIND_CAPI_CONTEXT);
819 return NULL;
820 }
821
822 key = capi_find_key(ctx, key_id);
823
824 if (!key)
825 return NULL;
826
827 ret = capi_get_pkey(eng, key);
828
829 if (!ret)
830 capi_free_key(key);
831 return ret;
832 }
833
834 /* CryptoAPI RSA operations */
835
capi_rsa_priv_enc(int flen,const unsigned char * from,unsigned char * to,RSA * rsa,int padding)836 int capi_rsa_priv_enc(int flen, const unsigned char *from,
837 unsigned char *to, RSA *rsa, int padding)
838 {
839 CAPIerr(CAPI_F_CAPI_RSA_PRIV_ENC, CAPI_R_FUNCTION_NOT_SUPPORTED);
840 return -1;
841 }
842
capi_rsa_sign(int dtype,const unsigned char * m,unsigned int m_len,unsigned char * sigret,unsigned int * siglen,const RSA * rsa)843 int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
844 unsigned char *sigret, unsigned int *siglen, const RSA *rsa)
845 {
846 ALG_ID alg;
847 HCRYPTHASH hash;
848 DWORD slen;
849 unsigned int i;
850 int ret = -1;
851 CAPI_KEY *capi_key;
852 CAPI_CTX *ctx;
853
854 ctx = ENGINE_get_ex_data(RSA_get0_engine(rsa), capi_idx);
855
856 CAPI_trace(ctx, "Called CAPI_rsa_sign()\n");
857
858 capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
859 if (!capi_key) {
860 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_GET_KEY);
861 return -1;
862 }
863 /* Convert the signature type to a CryptoAPI algorithm ID */
864 switch (dtype) {
865 case NID_sha256:
866 alg = CALG_SHA_256;
867 break;
868
869 case NID_sha384:
870 alg = CALG_SHA_384;
871 break;
872
873 case NID_sha512:
874 alg = CALG_SHA_512;
875 break;
876
877 case NID_sha1:
878 alg = CALG_SHA1;
879 break;
880
881 case NID_md5:
882 alg = CALG_MD5;
883 break;
884
885 case NID_md5_sha1:
886 alg = CALG_SSL3_SHAMD5;
887 break;
888 default: {
889 char algstr[10];
890 BIO_snprintf(algstr, 10, "%x", dtype);
891 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_UNSUPPORTED_ALGORITHM_NID);
892 ERR_add_error_data(2, "NID=0x", algstr);
893 return -1;
894 }
895 }
896
897 /* Create the hash object */
898 if (!CryptCreateHash(capi_key->hprov, alg, 0, 0, &hash)) {
899 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
900 capi_addlasterror();
901 return -1;
902 }
903 /* Set the hash value to the value passed */
904
905 if (!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)m, 0)) {
906 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
907 capi_addlasterror();
908 goto err;
909 }
910
911 /* Finally sign it */
912 slen = RSA_size(rsa);
913 if (!CryptSignHash(hash, capi_key->keyspec, NULL, 0, sigret, &slen)) {
914 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_ERROR_SIGNING_HASH);
915 capi_addlasterror();
916 goto err;
917 } else {
918 ret = 1;
919 /* Inplace byte reversal of signature */
920 for (i = 0; i < slen / 2; i++) {
921 unsigned char c;
922 c = sigret[i];
923 sigret[i] = sigret[slen - i - 1];
924 sigret[slen - i - 1] = c;
925 }
926 *siglen = slen;
927 }
928
929 /* Now cleanup */
930
931 err:
932 CryptDestroyHash(hash);
933
934 return ret;
935 }
936
capi_rsa_priv_dec(int flen,const unsigned char * from,unsigned char * to,RSA * rsa,int padding)937 int capi_rsa_priv_dec(int flen, const unsigned char *from,
938 unsigned char *to, RSA *rsa, int padding)
939 {
940 int i;
941 unsigned char *tmpbuf;
942 CAPI_KEY *capi_key;
943 CAPI_CTX *ctx;
944 DWORD flags = 0;
945 DWORD dlen;
946
947 if (flen <= 0)
948 return flen;
949
950 ctx = ENGINE_get_ex_data(RSA_get0_engine(rsa), capi_idx);
951
952 CAPI_trace(ctx, "Called capi_rsa_priv_dec()\n");
953
954 capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
955 if (!capi_key) {
956 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_CANT_GET_KEY);
957 return -1;
958 }
959
960 switch (padding) {
961 case RSA_PKCS1_PADDING:
962 /* Nothing to do */
963 break;
964 #ifdef CRYPT_DECRYPT_RSA_NO_PADDING_CHECK
965 case RSA_NO_PADDING:
966 flags = CRYPT_DECRYPT_RSA_NO_PADDING_CHECK;
967 break;
968 #endif
969 default: {
970 char errstr[10];
971 BIO_snprintf(errstr, 10, "%d", padding);
972 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_UNSUPPORTED_PADDING);
973 ERR_add_error_data(2, "padding=", errstr);
974 return -1;
975 }
976 }
977
978 /* Create temp reverse order version of input */
979 if ((tmpbuf = OPENSSL_malloc(flen)) == NULL)
980 return -1;
981 for (i = 0; i < flen; i++)
982 tmpbuf[flen - i - 1] = from[i];
983
984 /* Finally decrypt it */
985 dlen = flen;
986 if (!CryptDecrypt(capi_key->key, 0, TRUE, flags, tmpbuf, &dlen)) {
987 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_DECRYPT_ERROR);
988 capi_addlasterror();
989 OPENSSL_cleanse(tmpbuf, dlen);
990 OPENSSL_free(tmpbuf);
991 return -1;
992 } else {
993 memcpy(to, tmpbuf, (flen = (int)dlen));
994 }
995 OPENSSL_cleanse(tmpbuf, flen);
996 OPENSSL_free(tmpbuf);
997
998 return flen;
999 }
1000
capi_rsa_free(RSA * rsa)1001 static int capi_rsa_free(RSA *rsa)
1002 {
1003 CAPI_KEY *capi_key;
1004 capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
1005 capi_free_key(capi_key);
1006 RSA_set_ex_data(rsa, rsa_capi_idx, 0);
1007 return 1;
1008 }
1009
1010 #ifndef OPENSSL_NO_DSA
1011 /* CryptoAPI DSA operations */
1012
capi_dsa_do_sign(const unsigned char * digest,int dlen,DSA * dsa)1013 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
1014 DSA *dsa)
1015 {
1016 HCRYPTHASH hash;
1017 DWORD slen;
1018 DSA_SIG *ret = NULL;
1019 CAPI_KEY *capi_key;
1020 CAPI_CTX *ctx;
1021 unsigned char csigbuf[40];
1022
1023 ctx = ENGINE_get_ex_data(DSA_get0_engine(dsa), capi_idx);
1024
1025 CAPI_trace(ctx, "Called CAPI_dsa_do_sign()\n");
1026
1027 capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
1028
1029 if (!capi_key) {
1030 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_GET_KEY);
1031 return NULL;
1032 }
1033
1034 if (dlen != 20) {
1035 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_INVALID_DIGEST_LENGTH);
1036 return NULL;
1037 }
1038
1039 /* Create the hash object */
1040 if (!CryptCreateHash(capi_key->hprov, CALG_SHA1, 0, 0, &hash)) {
1041 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
1042 capi_addlasterror();
1043 return NULL;
1044 }
1045
1046 /* Set the hash value to the value passed */
1047 if (!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)digest, 0)) {
1048 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
1049 capi_addlasterror();
1050 goto err;
1051 }
1052
1053 /* Finally sign it */
1054 slen = sizeof(csigbuf);
1055 if (!CryptSignHash(hash, capi_key->keyspec, NULL, 0, csigbuf, &slen)) {
1056 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_ERROR_SIGNING_HASH);
1057 capi_addlasterror();
1058 goto err;
1059 } else {
1060 BIGNUM *r = BN_new(), *s = BN_new();
1061
1062 if (r == NULL || s == NULL
1063 || !lend_tobn(r, csigbuf, 20)
1064 || !lend_tobn(s, csigbuf + 20, 20)
1065 || (ret = DSA_SIG_new()) == NULL) {
1066 BN_free(r); /* BN_free checks for BIGNUM * being NULL */
1067 BN_free(s);
1068 goto err;
1069 }
1070 DSA_SIG_set0(ret, r, s);
1071 }
1072
1073 /* Now cleanup */
1074
1075 err:
1076 OPENSSL_cleanse(csigbuf, 40);
1077 CryptDestroyHash(hash);
1078 return ret;
1079 }
1080
capi_dsa_free(DSA * dsa)1081 static int capi_dsa_free(DSA *dsa)
1082 {
1083 CAPI_KEY *capi_key;
1084 capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
1085 capi_free_key(capi_key);
1086 DSA_set_ex_data(dsa, dsa_capi_idx, 0);
1087 return 1;
1088 }
1089 #endif
1090
capi_vtrace(CAPI_CTX * ctx,int level,char * format,va_list argptr)1091 static void capi_vtrace(CAPI_CTX *ctx, int level, char *format,
1092 va_list argptr)
1093 {
1094 BIO *out;
1095
1096 if (!ctx || (ctx->debug_level < level) || (!ctx->debug_file))
1097 return;
1098 out = BIO_new_file(ctx->debug_file, "a+");
1099 if (out == NULL) {
1100 CAPIerr(CAPI_F_CAPI_VTRACE, CAPI_R_FILE_OPEN_ERROR);
1101 return;
1102 }
1103 BIO_vprintf(out, format, argptr);
1104 BIO_free(out);
1105 }
1106
CAPI_trace(CAPI_CTX * ctx,char * format,...)1107 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...)
1108 {
1109 va_list args;
1110 va_start(args, format);
1111 capi_vtrace(ctx, CAPI_DBG_TRACE, format, args);
1112 va_end(args);
1113 }
1114
capi_addlasterror(void)1115 static void capi_addlasterror(void)
1116 {
1117 capi_adderror(GetLastError());
1118 }
1119
capi_adderror(DWORD err)1120 static void capi_adderror(DWORD err)
1121 {
1122 char errstr[10];
1123 BIO_snprintf(errstr, 10, "%lX", err);
1124 ERR_add_error_data(2, "Error code= 0x", errstr);
1125 }
1126
wide_to_asc(LPCWSTR wstr)1127 static char *wide_to_asc(LPCWSTR wstr)
1128 {
1129 char *str;
1130 int len_0, sz;
1131 size_t len_1;
1132
1133 if (!wstr)
1134 return NULL;
1135
1136 len_1 = wcslen(wstr) + 1;
1137
1138 if (len_1 > INT_MAX) {
1139 CAPIerr(CAPI_F_WIDE_TO_ASC, CAPI_R_FUNCTION_NOT_SUPPORTED);
1140 return NULL;
1141 }
1142
1143 len_0 = (int)len_1; /* WideCharToMultiByte expects int */
1144 sz = WideCharToMultiByte(CP_ACP, 0, wstr, len_0, NULL, 0, NULL, NULL);
1145 if (!sz) {
1146 CAPIerr(CAPI_F_WIDE_TO_ASC, CAPI_R_WIN32_ERROR);
1147 return NULL;
1148 }
1149 str = OPENSSL_malloc(sz);
1150 if (str == NULL)
1151 return NULL;
1152 if (!WideCharToMultiByte(CP_ACP, 0, wstr, len_0, str, sz, NULL, NULL)) {
1153 OPENSSL_free(str);
1154 CAPIerr(CAPI_F_WIDE_TO_ASC, CAPI_R_WIN32_ERROR);
1155 return NULL;
1156 }
1157 return str;
1158 }
1159
capi_get_provname(CAPI_CTX * ctx,LPSTR * pname,DWORD * ptype,DWORD idx)1160 static int capi_get_provname(CAPI_CTX *ctx, LPSTR *pname, DWORD *ptype,
1161 DWORD idx)
1162 {
1163 DWORD len, err;
1164 LPTSTR name;
1165 CAPI_trace(ctx, "capi_get_provname, index=%d\n", idx);
1166 if (!CryptEnumProviders(idx, NULL, 0, ptype, NULL, &len)) {
1167 err = GetLastError();
1168 if (err == ERROR_NO_MORE_ITEMS)
1169 return 2;
1170 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1171 capi_adderror(err);
1172 return 0;
1173 }
1174 name = OPENSSL_malloc(len);
1175 if (name == NULL)
1176 return 0;
1177 if (!CryptEnumProviders(idx, NULL, 0, ptype, name, &len)) {
1178 err = GetLastError();
1179 OPENSSL_free(name);
1180 if (err == ERROR_NO_MORE_ITEMS)
1181 return 2;
1182 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1183 capi_adderror(err);
1184 return 0;
1185 }
1186 if (sizeof(TCHAR) != sizeof(char)) {
1187 *pname = wide_to_asc((WCHAR *)name);
1188 OPENSSL_free(name);
1189 if (*pname == NULL)
1190 return 0;
1191 } else {
1192 *pname = (char *)name;
1193 }
1194 CAPI_trace(ctx, "capi_get_provname, returned name=%s, type=%d\n", *pname,
1195 *ptype);
1196
1197 return 1;
1198 }
1199
capi_list_providers(CAPI_CTX * ctx,BIO * out)1200 static int capi_list_providers(CAPI_CTX *ctx, BIO *out)
1201 {
1202 DWORD idx, ptype;
1203 int ret;
1204 LPSTR provname = NULL;
1205 CAPI_trace(ctx, "capi_list_providers\n");
1206 BIO_printf(out, "Available CSPs:\n");
1207 for (idx = 0;; idx++) {
1208 ret = capi_get_provname(ctx, &provname, &ptype, idx);
1209 if (ret == 2)
1210 break;
1211 if (ret == 0)
1212 break;
1213 BIO_printf(out, "%lu. %s, type %lu\n", idx, provname, ptype);
1214 OPENSSL_free(provname);
1215 }
1216 return 1;
1217 }
1218
capi_list_containers(CAPI_CTX * ctx,BIO * out)1219 static int capi_list_containers(CAPI_CTX *ctx, BIO *out)
1220 {
1221 int ret = 1;
1222 HCRYPTPROV hprov;
1223 DWORD err, idx, flags, buflen = 0, clen;
1224 LPSTR cname;
1225 LPWSTR cspname = NULL;
1226
1227 CAPI_trace(ctx, "Listing containers CSP=%s, type = %d\n", ctx->cspname,
1228 ctx->csptype);
1229 if (ctx->cspname != NULL) {
1230 if ((clen = MultiByteToWideChar(CP_ACP, 0, ctx->cspname, -1,
1231 NULL, 0))) {
1232 cspname = alloca(clen * sizeof(WCHAR));
1233 MultiByteToWideChar(CP_ACP, 0, ctx->cspname, -1, (WCHAR *)cspname,
1234 clen);
1235 }
1236 if (cspname == NULL) {
1237 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, ERR_R_MALLOC_FAILURE);
1238 capi_addlasterror();
1239 return 0;
1240 }
1241 }
1242 if (!CryptAcquireContextW(&hprov, NULL, cspname, ctx->csptype,
1243 CRYPT_VERIFYCONTEXT)) {
1244 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS,
1245 CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1246 capi_addlasterror();
1247 return 0;
1248 }
1249 if (!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, NULL, &buflen,
1250 CRYPT_FIRST)) {
1251 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1252 capi_addlasterror();
1253 CryptReleaseContext(hprov, 0);
1254 return 0;
1255 }
1256 CAPI_trace(ctx, "Got max container len %d\n", buflen);
1257 if (buflen == 0)
1258 buflen = 1024;
1259 cname = OPENSSL_malloc(buflen);
1260 if (cname == NULL)
1261 goto err;
1262
1263 for (idx = 0;; idx++) {
1264 clen = buflen;
1265 cname[0] = 0;
1266
1267 if (idx == 0)
1268 flags = CRYPT_FIRST;
1269 else
1270 flags = 0;
1271 if (!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, (BYTE *)cname,
1272 &clen, flags)) {
1273 err = GetLastError();
1274 if (err == ERROR_NO_MORE_ITEMS)
1275 goto done;
1276 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1277 capi_adderror(err);
1278 goto err;
1279 }
1280 CAPI_trace(ctx, "Container name %s, len=%d, index=%d, flags=%d\n",
1281 cname, clen, idx, flags);
1282 if (!cname[0] && (clen == buflen)) {
1283 CAPI_trace(ctx, "Enumerate bug: using workaround\n");
1284 goto done;
1285 }
1286 BIO_printf(out, "%lu. %s\n", idx, cname);
1287 }
1288 err:
1289
1290 ret = 0;
1291
1292 done:
1293 OPENSSL_free(cname);
1294 CryptReleaseContext(hprov, 0);
1295
1296 return ret;
1297 }
1298
capi_get_prov_info(CAPI_CTX * ctx,PCCERT_CONTEXT cert)1299 static CRYPT_KEY_PROV_INFO *capi_get_prov_info(CAPI_CTX *ctx,
1300 PCCERT_CONTEXT cert)
1301 {
1302 DWORD len;
1303 CRYPT_KEY_PROV_INFO *pinfo;
1304
1305 if (!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID,
1306 NULL, &len))
1307 return NULL;
1308 pinfo = OPENSSL_malloc(len);
1309 if (pinfo == NULL)
1310 return NULL;
1311 if (!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID,
1312 pinfo, &len)) {
1313 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO,
1314 CAPI_R_ERROR_GETTING_KEY_PROVIDER_INFO);
1315 capi_addlasterror();
1316 OPENSSL_free(pinfo);
1317 return NULL;
1318 }
1319 return pinfo;
1320 }
1321
capi_dump_prov_info(CAPI_CTX * ctx,BIO * out,CRYPT_KEY_PROV_INFO * pinfo)1322 static void capi_dump_prov_info(CAPI_CTX *ctx, BIO *out,
1323 CRYPT_KEY_PROV_INFO *pinfo)
1324 {
1325 char *provname = NULL, *contname = NULL;
1326
1327 if (pinfo == NULL) {
1328 BIO_printf(out, " No Private Key\n");
1329 return;
1330 }
1331 provname = wide_to_asc(pinfo->pwszProvName);
1332 contname = wide_to_asc(pinfo->pwszContainerName);
1333 if (provname == NULL || contname == NULL)
1334 goto err;
1335
1336 BIO_printf(out, " Private Key Info:\n");
1337 BIO_printf(out, " Provider Name: %s, Provider Type %lu\n", provname,
1338 pinfo->dwProvType);
1339 BIO_printf(out, " Container Name: %s, Key Type %lu\n", contname,
1340 pinfo->dwKeySpec);
1341 err:
1342 OPENSSL_free(provname);
1343 OPENSSL_free(contname);
1344 }
1345
capi_cert_get_fname(CAPI_CTX * ctx,PCCERT_CONTEXT cert)1346 static char *capi_cert_get_fname(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1347 {
1348 LPWSTR wfname;
1349 DWORD dlen;
1350
1351 CAPI_trace(ctx, "capi_cert_get_fname\n");
1352 if (!CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID,
1353 NULL, &dlen))
1354 return NULL;
1355 wfname = OPENSSL_malloc(dlen);
1356 if (wfname == NULL)
1357 return NULL;
1358 if (CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID,
1359 wfname, &dlen)) {
1360 char *fname = wide_to_asc(wfname);
1361 OPENSSL_free(wfname);
1362 return fname;
1363 }
1364 CAPIerr(CAPI_F_CAPI_CERT_GET_FNAME, CAPI_R_ERROR_GETTING_FRIENDLY_NAME);
1365 capi_addlasterror();
1366
1367 OPENSSL_free(wfname);
1368 return NULL;
1369 }
1370
capi_dump_cert(CAPI_CTX * ctx,BIO * out,PCCERT_CONTEXT cert)1371 static void capi_dump_cert(CAPI_CTX *ctx, BIO *out, PCCERT_CONTEXT cert)
1372 {
1373 X509 *x;
1374 const unsigned char *p;
1375 unsigned long flags = ctx->dump_flags;
1376 if (flags & CAPI_DMP_FNAME) {
1377 char *fname;
1378 fname = capi_cert_get_fname(ctx, cert);
1379 if (fname) {
1380 BIO_printf(out, " Friendly Name \"%s\"\n", fname);
1381 OPENSSL_free(fname);
1382 } else {
1383 BIO_printf(out, " <No Friendly Name>\n");
1384 }
1385 }
1386
1387 p = cert->pbCertEncoded;
1388 x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1389 if (!x)
1390 BIO_printf(out, " <Can't parse certificate>\n");
1391 if (flags & CAPI_DMP_SUMMARY) {
1392 BIO_printf(out, " Subject: ");
1393 X509_NAME_print_ex(out, X509_get_subject_name(x), 0, XN_FLAG_ONELINE);
1394 BIO_printf(out, "\n Issuer: ");
1395 X509_NAME_print_ex(out, X509_get_issuer_name(x), 0, XN_FLAG_ONELINE);
1396 BIO_printf(out, "\n");
1397 }
1398 if (flags & CAPI_DMP_FULL)
1399 X509_print_ex(out, x, XN_FLAG_ONELINE, 0);
1400
1401 if (flags & CAPI_DMP_PKEYINFO) {
1402 CRYPT_KEY_PROV_INFO *pinfo;
1403 pinfo = capi_get_prov_info(ctx, cert);
1404 capi_dump_prov_info(ctx, out, pinfo);
1405 OPENSSL_free(pinfo);
1406 }
1407
1408 if (flags & CAPI_DMP_PEM)
1409 PEM_write_bio_X509(out, x);
1410 X509_free(x);
1411 }
1412
capi_open_store(CAPI_CTX * ctx,char * storename)1413 static HCERTSTORE capi_open_store(CAPI_CTX *ctx, char *storename)
1414 {
1415 HCERTSTORE hstore;
1416
1417 if (!storename)
1418 storename = ctx->storename;
1419 if (!storename)
1420 storename = "MY";
1421 CAPI_trace(ctx, "Opening certificate store %s\n", storename);
1422
1423 hstore = CertOpenStore(CERT_STORE_PROV_SYSTEM_A, 0, 0,
1424 ctx->store_flags, storename);
1425 if (!hstore) {
1426 CAPIerr(CAPI_F_CAPI_OPEN_STORE, CAPI_R_ERROR_OPENING_STORE);
1427 capi_addlasterror();
1428 }
1429 return hstore;
1430 }
1431
capi_list_certs(CAPI_CTX * ctx,BIO * out,char * id)1432 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *id)
1433 {
1434 char *storename;
1435 int idx;
1436 int ret = 1;
1437 HCERTSTORE hstore;
1438 PCCERT_CONTEXT cert = NULL;
1439
1440 storename = ctx->storename;
1441 if (!storename)
1442 storename = "MY";
1443 CAPI_trace(ctx, "Listing certs for store %s\n", storename);
1444
1445 hstore = capi_open_store(ctx, storename);
1446 if (!hstore)
1447 return 0;
1448 if (id) {
1449 cert = capi_find_cert(ctx, id, hstore);
1450 if (!cert) {
1451 ret = 0;
1452 goto err;
1453 }
1454 capi_dump_cert(ctx, out, cert);
1455 CertFreeCertificateContext(cert);
1456 } else {
1457 for (idx = 0;; idx++) {
1458 cert = CertEnumCertificatesInStore(hstore, cert);
1459 if (!cert)
1460 break;
1461 BIO_printf(out, "Certificate %d\n", idx);
1462 capi_dump_cert(ctx, out, cert);
1463 }
1464 }
1465 err:
1466 CertCloseStore(hstore, 0);
1467 return ret;
1468 }
1469
capi_find_cert(CAPI_CTX * ctx,const char * id,HCERTSTORE hstore)1470 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id,
1471 HCERTSTORE hstore)
1472 {
1473 PCCERT_CONTEXT cert = NULL;
1474 char *fname = NULL;
1475 int match;
1476 switch (ctx->lookup_method) {
1477 case CAPI_LU_SUBSTR:
1478 return CertFindCertificateInStore(hstore, X509_ASN_ENCODING, 0,
1479 CERT_FIND_SUBJECT_STR_A, id, NULL);
1480 case CAPI_LU_FNAME:
1481 for (;;) {
1482 cert = CertEnumCertificatesInStore(hstore, cert);
1483 if (!cert)
1484 return NULL;
1485 fname = capi_cert_get_fname(ctx, cert);
1486 if (fname) {
1487 if (strcmp(fname, id))
1488 match = 0;
1489 else
1490 match = 1;
1491 OPENSSL_free(fname);
1492 if (match)
1493 return cert;
1494 }
1495 }
1496 default:
1497 return NULL;
1498 }
1499 }
1500
capi_get_key(CAPI_CTX * ctx,const WCHAR * contname,const WCHAR * provname,DWORD ptype,DWORD keyspec)1501 static CAPI_KEY *capi_get_key(CAPI_CTX *ctx, const WCHAR *contname,
1502 const WCHAR *provname, DWORD ptype,
1503 DWORD keyspec)
1504 {
1505 DWORD dwFlags = 0;
1506 CAPI_KEY *key = OPENSSL_malloc(sizeof(*key));
1507
1508 if (key == NULL)
1509 return NULL;
1510 /* If PROV_RSA_AES supported use it instead */
1511 if (ptype == PROV_RSA_FULL && use_aes_csp && wcscmp(provname, rsa_enh_cspname) == 0) {
1512 provname = rsa_aes_cspname;
1513 ptype = PROV_RSA_AES;
1514 }
1515 if (ctx && ctx->debug_level >= CAPI_DBG_TRACE && ctx->debug_file) {
1516 /*
1517 * above 'if' is [complementary] copy from CAPI_trace and serves
1518 * as optimization to minimize [below] malloc-ations
1519 */
1520 char *_contname = wide_to_asc(contname);
1521 char *_provname = wide_to_asc(provname);
1522
1523 CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n",
1524 _contname, _provname, ptype);
1525 OPENSSL_free(_provname);
1526 OPENSSL_free(_contname);
1527 }
1528 if (ctx->store_flags & CERT_SYSTEM_STORE_LOCAL_MACHINE)
1529 dwFlags = CRYPT_MACHINE_KEYSET;
1530 if (!CryptAcquireContextW(&key->hprov, contname, provname, ptype,
1531 dwFlags)) {
1532 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1533 capi_addlasterror();
1534 goto err;
1535 }
1536 if (!CryptGetUserKey(key->hprov, keyspec, &key->key)) {
1537 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_GETUSERKEY_ERROR);
1538 capi_addlasterror();
1539 CryptReleaseContext(key->hprov, 0);
1540 goto err;
1541 }
1542 key->keyspec = keyspec;
1543 key->pcert = NULL;
1544 return key;
1545
1546 err:
1547 OPENSSL_free(key);
1548 return NULL;
1549 }
1550
capi_get_cert_key(CAPI_CTX * ctx,PCCERT_CONTEXT cert)1551 static CAPI_KEY *capi_get_cert_key(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1552 {
1553 CAPI_KEY *key = NULL;
1554 CRYPT_KEY_PROV_INFO *pinfo = NULL;
1555
1556 pinfo = capi_get_prov_info(ctx, cert);
1557
1558 if (pinfo != NULL)
1559 key = capi_get_key(ctx, pinfo->pwszContainerName, pinfo->pwszProvName,
1560 pinfo->dwProvType, pinfo->dwKeySpec);
1561
1562 OPENSSL_free(pinfo);
1563 return key;
1564 }
1565
capi_find_key(CAPI_CTX * ctx,const char * id)1566 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id)
1567 {
1568 PCCERT_CONTEXT cert;
1569 HCERTSTORE hstore;
1570 CAPI_KEY *key = NULL;
1571
1572 switch (ctx->lookup_method) {
1573 case CAPI_LU_SUBSTR:
1574 case CAPI_LU_FNAME:
1575 hstore = capi_open_store(ctx, NULL);
1576 if (!hstore)
1577 return NULL;
1578 cert = capi_find_cert(ctx, id, hstore);
1579 if (cert) {
1580 key = capi_get_cert_key(ctx, cert);
1581 CertFreeCertificateContext(cert);
1582 }
1583 CertCloseStore(hstore, 0);
1584 break;
1585
1586 case CAPI_LU_CONTNAME: {
1587 WCHAR *contname, *provname;
1588 DWORD len;
1589
1590 if ((len = MultiByteToWideChar(CP_ACP, 0, id, -1, NULL, 0)) && (contname = alloca(len * sizeof(WCHAR)), MultiByteToWideChar(CP_ACP, 0, id, -1, contname, len)) && (len = MultiByteToWideChar(CP_ACP, 0, ctx->cspname, -1, NULL, 0)) && (provname = alloca(len * sizeof(WCHAR)), MultiByteToWideChar(CP_ACP, 0, ctx->cspname, -1, provname, len)))
1591 key = capi_get_key(ctx, contname, provname,
1592 ctx->csptype, ctx->keytype);
1593 } break;
1594 }
1595
1596 return key;
1597 }
1598
capi_free_key(CAPI_KEY * key)1599 void capi_free_key(CAPI_KEY *key)
1600 {
1601 if (!key)
1602 return;
1603 CryptDestroyKey(key->key);
1604 CryptReleaseContext(key->hprov, 0);
1605 if (key->pcert)
1606 CertFreeCertificateContext(key->pcert);
1607 OPENSSL_free(key);
1608 }
1609
1610 /* Initialize a CAPI_CTX structure */
1611
capi_ctx_new(void)1612 static CAPI_CTX *capi_ctx_new(void)
1613 {
1614 CAPI_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
1615
1616 if (ctx == NULL)
1617 return NULL;
1618 ctx->csptype = PROV_RSA_FULL;
1619 ctx->dump_flags = CAPI_DMP_SUMMARY | CAPI_DMP_FNAME;
1620 ctx->keytype = AT_KEYEXCHANGE;
1621 ctx->store_flags = CERT_STORE_OPEN_EXISTING_FLAG | CERT_STORE_READONLY_FLAG | CERT_SYSTEM_STORE_CURRENT_USER;
1622 ctx->lookup_method = CAPI_LU_SUBSTR;
1623 ctx->client_cert_select = cert_select_simple;
1624 return ctx;
1625 }
1626
capi_ctx_free(CAPI_CTX * ctx)1627 static void capi_ctx_free(CAPI_CTX *ctx)
1628 {
1629 CAPI_trace(ctx, "Calling capi_ctx_free with %lx\n", ctx);
1630 if (!ctx)
1631 return;
1632 OPENSSL_free(ctx->cspname);
1633 OPENSSL_free(ctx->debug_file);
1634 OPENSSL_free(ctx->storename);
1635 OPENSSL_free(ctx->ssl_client_store);
1636 OPENSSL_free(ctx);
1637 }
1638
capi_ctx_set_provname(CAPI_CTX * ctx,LPSTR pname,DWORD type,int check)1639 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type,
1640 int check)
1641 {
1642 LPSTR tmpcspname;
1643
1644 CAPI_trace(ctx, "capi_ctx_set_provname, name=%s, type=%d\n", pname, type);
1645 if (check) {
1646 HCRYPTPROV hprov;
1647 LPWSTR name = NULL;
1648 DWORD len;
1649
1650 if ((len = MultiByteToWideChar(CP_ACP, 0, pname, -1, NULL, 0))) {
1651 name = alloca(len * sizeof(WCHAR));
1652 MultiByteToWideChar(CP_ACP, 0, pname, -1, (WCHAR *)name, len);
1653 }
1654 if (name == NULL || !CryptAcquireContextW(&hprov, NULL, name, type, CRYPT_VERIFYCONTEXT)) {
1655 CAPIerr(CAPI_F_CAPI_CTX_SET_PROVNAME,
1656 CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1657 capi_addlasterror();
1658 return 0;
1659 }
1660 CryptReleaseContext(hprov, 0);
1661 }
1662 tmpcspname = OPENSSL_strdup(pname);
1663 if (tmpcspname == NULL)
1664 return 0;
1665 OPENSSL_free(ctx->cspname);
1666 ctx->cspname = tmpcspname;
1667 ctx->csptype = type;
1668 return 1;
1669 }
1670
capi_ctx_set_provname_idx(CAPI_CTX * ctx,int idx)1671 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx)
1672 {
1673 LPSTR pname;
1674 DWORD type;
1675 int res;
1676 if (capi_get_provname(ctx, &pname, &type, idx) != 1)
1677 return 0;
1678 res = capi_ctx_set_provname(ctx, pname, type, 0);
1679 OPENSSL_free(pname);
1680 return res;
1681 }
1682
cert_issuer_match(STACK_OF (X509_NAME)* ca_dn,X509 * x)1683 static int cert_issuer_match(STACK_OF(X509_NAME) *ca_dn, X509 *x)
1684 {
1685 int i;
1686 X509_NAME *nm;
1687 /* Special case: empty list: match anything */
1688 if (sk_X509_NAME_num(ca_dn) <= 0)
1689 return 1;
1690 for (i = 0; i < sk_X509_NAME_num(ca_dn); i++) {
1691 nm = sk_X509_NAME_value(ca_dn, i);
1692 if (!X509_NAME_cmp(nm, X509_get_issuer_name(x)))
1693 return 1;
1694 }
1695 return 0;
1696 }
1697
capi_load_ssl_client_cert(ENGINE * e,SSL * ssl,STACK_OF (X509_NAME)* ca_dn,X509 ** pcert,EVP_PKEY ** pkey,STACK_OF (X509)** pother,UI_METHOD * ui_method,void * callback_data)1698 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
1699 STACK_OF(X509_NAME) *ca_dn, X509 **pcert,
1700 EVP_PKEY **pkey, STACK_OF(X509) **pother,
1701 UI_METHOD *ui_method,
1702 void *callback_data)
1703 {
1704 STACK_OF(X509) *certs = NULL;
1705 X509 *x;
1706 char *storename;
1707 const unsigned char *p;
1708 int i, client_cert_idx;
1709 HCERTSTORE hstore;
1710 PCCERT_CONTEXT cert = NULL, excert = NULL;
1711 CAPI_CTX *ctx;
1712 CAPI_KEY *key;
1713 ctx = ENGINE_get_ex_data(e, capi_idx);
1714
1715 *pcert = NULL;
1716 *pkey = NULL;
1717
1718 storename = ctx->ssl_client_store;
1719 if (!storename)
1720 storename = "MY";
1721
1722 hstore = capi_open_store(ctx, storename);
1723 if (!hstore)
1724 return 0;
1725 /* Enumerate all certificates collect any matches */
1726 for (i = 0;; i++) {
1727 cert = CertEnumCertificatesInStore(hstore, cert);
1728 if (!cert)
1729 break;
1730 p = cert->pbCertEncoded;
1731 x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1732 if (!x) {
1733 CAPI_trace(ctx, "Can't Parse Certificate %d\n", i);
1734 continue;
1735 }
1736 if (cert_issuer_match(ca_dn, x)
1737 && X509_check_purpose(x, X509_PURPOSE_SSL_CLIENT, 0)) {
1738 key = capi_get_cert_key(ctx, cert);
1739 if (!key) {
1740 X509_free(x);
1741 continue;
1742 }
1743 /*
1744 * Match found: attach extra data to it so we can retrieve the
1745 * key later.
1746 */
1747 excert = CertDuplicateCertificateContext(cert);
1748 key->pcert = excert;
1749 X509_set_ex_data(x, cert_capi_idx, key);
1750
1751 if (!certs)
1752 certs = sk_X509_new_null();
1753
1754 if (!sk_X509_push(certs, x)) {
1755 X509_free(x);
1756 continue;
1757 }
1758 } else {
1759 X509_free(x);
1760 }
1761 }
1762
1763 if (cert)
1764 CertFreeCertificateContext(cert);
1765 if (hstore)
1766 CertCloseStore(hstore, 0);
1767
1768 if (!certs)
1769 return 0;
1770
1771 /* Select the appropriate certificate */
1772
1773 client_cert_idx = ctx->client_cert_select(e, ssl, certs);
1774
1775 /* Set the selected certificate and free the rest */
1776
1777 for (i = 0; i < sk_X509_num(certs); i++) {
1778 x = sk_X509_value(certs, i);
1779 if (i == client_cert_idx)
1780 *pcert = x;
1781 else {
1782 key = X509_get_ex_data(x, cert_capi_idx);
1783 capi_free_key(key);
1784 X509_free(x);
1785 }
1786 }
1787
1788 sk_X509_free(certs);
1789
1790 if (*pcert == NULL)
1791 return 0;
1792
1793 /* Setup key for selected certificate */
1794
1795 key = X509_get_ex_data(*pcert, cert_capi_idx);
1796 *pkey = capi_get_pkey(e, key);
1797 X509_set_ex_data(*pcert, cert_capi_idx, NULL);
1798
1799 return 1;
1800 }
1801
1802 /* Simple client cert selection function: always select first */
1803
cert_select_simple(ENGINE * e,SSL * ssl,STACK_OF (X509)* certs)1804 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1805 {
1806 return 0;
1807 }
1808
1809 #ifdef OPENSSL_CAPIENG_DIALOG
1810
1811 /*
1812 * More complex cert selection function, using standard function
1813 * CryptUIDlgSelectCertificateFromStore() to produce a dialog box.
1814 */
1815
1816 /*
1817 * Definitions which are in cryptuiapi.h but this is not present in older
1818 * versions of headers.
1819 */
1820
1821 #ifndef CRYPTUI_SELECT_LOCATION_COLUMN
1822 #define CRYPTUI_SELECT_LOCATION_COLUMN 0x000000010
1823 #define CRYPTUI_SELECT_INTENDEDUSE_COLUMN 0x000000004
1824 #endif
1825
1826 #define dlg_title L"OpenSSL Application SSL Client Certificate Selection"
1827 #define dlg_prompt L"Select a certificate to use for authentication"
1828 #define dlg_columns \
1829 CRYPTUI_SELECT_LOCATION_COLUMN \
1830 | CRYPTUI_SELECT_INTENDEDUSE_COLUMN
1831
cert_select_dialog(ENGINE * e,SSL * ssl,STACK_OF (X509)* certs)1832 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1833 {
1834 X509 *x;
1835 HCERTSTORE dstore;
1836 PCCERT_CONTEXT cert;
1837 CAPI_CTX *ctx;
1838 CAPI_KEY *key;
1839 HWND hwnd;
1840 int i, idx = -1;
1841 if (sk_X509_num(certs) == 1)
1842 return 0;
1843 ctx = ENGINE_get_ex_data(e, capi_idx);
1844 /* Create an in memory store of certificates */
1845 dstore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
1846 CERT_STORE_CREATE_NEW_FLAG, NULL);
1847 if (!dstore) {
1848 CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_CREATING_STORE);
1849 capi_addlasterror();
1850 goto err;
1851 }
1852 /* Add all certificates to store */
1853 for (i = 0; i < sk_X509_num(certs); i++) {
1854 x = sk_X509_value(certs, i);
1855 key = X509_get_ex_data(x, cert_capi_idx);
1856
1857 if (!CertAddCertificateContextToStore(dstore, key->pcert,
1858 CERT_STORE_ADD_NEW, NULL)) {
1859 CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_ADDING_CERT);
1860 capi_addlasterror();
1861 goto err;
1862 }
1863 }
1864 hwnd = GetForegroundWindow();
1865 if (!hwnd)
1866 hwnd = GetActiveWindow();
1867 if (!hwnd && ctx->getconswindow)
1868 hwnd = ctx->getconswindow();
1869 /* Call dialog to select one */
1870 cert = ctx->certselectdlg(dstore, hwnd, dlg_title, dlg_prompt,
1871 dlg_columns, 0, NULL);
1872
1873 /* Find matching cert from list */
1874 if (cert) {
1875 for (i = 0; i < sk_X509_num(certs); i++) {
1876 x = sk_X509_value(certs, i);
1877 key = X509_get_ex_data(x, cert_capi_idx);
1878 if (CertCompareCertificate(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, cert->pCertInfo,
1879 key->pcert->pCertInfo)) {
1880 idx = i;
1881 break;
1882 }
1883 }
1884 }
1885
1886 err:
1887 if (dstore)
1888 CertCloseStore(dstore, 0);
1889 return idx;
1890 }
1891 #endif
1892
1893 #else /* !__COMPILE_CAPIENG */
1894 #include <openssl/engine.h>
1895 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
1896 OPENSSL_EXPORT
1897 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns);
1898 OPENSSL_EXPORT
bind_engine(ENGINE * e,const char * id,const dynamic_fns * fns)1899 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns)
1900 {
1901 return 0;
1902 }
1903
1904 IMPLEMENT_DYNAMIC_CHECK_FN()
1905 #else
1906 void engine_load_capi_int(void);
1907 void engine_load_capi_int(void)
1908 {
1909 }
1910 #endif
1911 #endif
1912