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