summaryrefslogtreecommitdiff
path: root/source4/heimdal/lib/hx509/ks_p12.c
blob: 53590c768cf564dff0c95b8fc8c826425d497e23 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
/*
 * Copyright (c) 2004 - 2007 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden). 
 * All rights reserved. 
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 *
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the distribution. 
 *
 * 3. Neither the name of the Institute nor the names of its contributors 
 *    may be used to endorse or promote products derived from this software 
 *    without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE. 
 */

#include "hx_locl.h"
RCSID("$Id$");

struct ks_pkcs12 {
    hx509_certs certs;
    char *fn;
};

typedef int (*collector_func)(hx509_context,
			      struct hx509_collector *,
			      const void *, size_t,
			      const PKCS12_Attributes *);

struct type {
    const heim_oid * (*oid)(void);
    collector_func func;
};

static void
parse_pkcs12_type(hx509_context, struct hx509_collector *, const heim_oid *, 
		  const void *, size_t, const PKCS12_Attributes *);


static const PKCS12_Attribute *
find_attribute(const PKCS12_Attributes *attrs, const heim_oid *oid)
{
    int i;
    if (attrs == NULL)
	return NULL;
    for (i = 0; i < attrs->len; i++)
	if (der_heim_oid_cmp(oid, &attrs->val[i].attrId) == 0)
	    return &attrs->val[i];
    return NULL;
}

static int
keyBag_parser(hx509_context context,
	      struct hx509_collector *c, 
	      const void *data, size_t length,
	      const PKCS12_Attributes *attrs)
{
    const PKCS12_Attribute *attr;
    PKCS8PrivateKeyInfo ki;
    const heim_octet_string *os = NULL;
    int ret;

    attr = find_attribute(attrs, oid_id_pkcs_9_at_localKeyId());
    if (attr)
	os = &attr->attrValues;

    ret = decode_PKCS8PrivateKeyInfo(data, length, &ki, NULL);
    if (ret)
	return ret;
    
    _hx509_collector_private_key_add(context,
				     c,
				     &ki.privateKeyAlgorithm,
				     NULL,
				     &ki.privateKey,
				     os);
    free_PKCS8PrivateKeyInfo(&ki);
    return 0;
}

static int
ShroudedKeyBag_parser(hx509_context context,
		      struct hx509_collector *c, 
		      const void *data, size_t length,
		      const PKCS12_Attributes *attrs)
{
    PKCS8EncryptedPrivateKeyInfo pk;
    heim_octet_string content;
    int ret;
    
    memset(&pk, 0, sizeof(pk));
    
    ret = decode_PKCS8EncryptedPrivateKeyInfo(data, length, &pk, NULL);
    if (ret)
	return ret;

    ret = _hx509_pbe_decrypt(context,
			     _hx509_collector_get_lock(c),
			     &pk.encryptionAlgorithm,
			     &pk.encryptedData,
			     &content);
    free_PKCS8EncryptedPrivateKeyInfo(&pk);
    if (ret)
	return ret;

    ret = keyBag_parser(context, c, content.data, content.length, attrs);
    der_free_octet_string(&content);
    return ret;
}

static int
certBag_parser(hx509_context context,
	       struct hx509_collector *c, 
	       const void *data, size_t length,
	       const PKCS12_Attributes *attrs)
{
    heim_octet_string os;
    hx509_cert cert;
    PKCS12_CertBag cb;
    int ret;

    ret = decode_PKCS12_CertBag(data, length, &cb, NULL);
    if (ret)
	return ret;

    if (der_heim_oid_cmp(oid_id_pkcs_9_at_certTypes_x509(), &cb.certType)) {
	free_PKCS12_CertBag(&cb);
	return 0;
    }

    ret = decode_PKCS12_OctetString(cb.certValue.data, 
				    cb.certValue.length,
				    &os,
				    NULL);
    free_PKCS12_CertBag(&cb);
    if (ret)
	return ret;

    ret = hx509_cert_init_data(context, os.data, os.length, &cert);
    der_free_octet_string(&os);
    if (ret)
	return ret;

    ret = _hx509_collector_certs_add(context, c, cert);
    if (ret) {
	hx509_cert_free(cert);
	return ret;
    }

    {
	const PKCS12_Attribute *attr;
	const heim_oid * (*oids[])(void) = {
	    oid_id_pkcs_9_at_localKeyId, oid_id_pkcs_9_at_friendlyName
	};
	int i;

	for (i = 0; i < sizeof(oids)/sizeof(oids[0]); i++) {
	    const heim_oid *oid = (*(oids[i]))();
	    attr = find_attribute(attrs, oid);
	    if (attr)
		_hx509_set_cert_attribute(context, cert, oid,
					  &attr->attrValues);
	}	
    }

    hx509_cert_free(cert);

    return 0;
}

static int
parse_safe_content(hx509_context context,
		   struct hx509_collector *c, 
		   const unsigned char *p, size_t len)
{
    PKCS12_SafeContents sc;
    int ret, i;

    memset(&sc, 0, sizeof(sc));

    ret = decode_PKCS12_SafeContents(p, len, &sc, NULL);
    if (ret)
	return ret;

    for (i = 0; i < sc.len ; i++)
	parse_pkcs12_type(context,
			  c,
			  &sc.val[i].bagId,
			  sc.val[i].bagValue.data,
			  sc.val[i].bagValue.length,
			  sc.val[i].bagAttributes);

    free_PKCS12_SafeContents(&sc);
    return 0;
}

static int
safeContent_parser(hx509_context context,
		   struct hx509_collector *c, 
		   const void *data, size_t length,
		   const PKCS12_Attributes *attrs)
{
    heim_octet_string os;
    int ret;

    ret = decode_PKCS12_OctetString(data, length, &os, NULL);
    if (ret)
	return ret;
    ret = parse_safe_content(context, c, os.data, os.length);
    der_free_octet_string(&os);
    return ret;
}

static int
encryptedData_parser(hx509_context context,
		     struct hx509_collector *c,
		     const void *data, size_t length,
		     const PKCS12_Attributes *attrs)
{
    heim_octet_string content;
    heim_oid contentType;
    int ret;
		
    memset(&contentType, 0, sizeof(contentType));

    ret = hx509_cms_decrypt_encrypted(context,
				      _hx509_collector_get_lock(c),
				      data, length,
				      &contentType,
				      &content);
    if (ret)
	return ret;

    if (der_heim_oid_cmp(&contentType, oid_id_pkcs7_data()) == 0)
	ret = parse_safe_content(context, c, content.data, content.length);

    der_free_octet_string(&content);
    der_free_oid(&contentType);
    return ret;
}

static int
envelopedData_parser(hx509_context context,
		     struct hx509_collector *c,
		     const void *data, size_t length,
		     const PKCS12_Attributes *attrs)
{
    heim_octet_string content;
    heim_oid contentType;
    hx509_lock lock;
    int ret;
		
    memset(&contentType, 0, sizeof(contentType));

    lock = _hx509_collector_get_lock(c);

    ret = hx509_cms_unenvelope(context,
			       _hx509_lock_unlock_certs(lock),
			       0,
			       data, length,
			       NULL,
			       0,
			       &contentType,
			       &content);
    if (ret) {
	hx509_set_error_string(context, HX509_ERROR_APPEND, ret, 
			       "PKCS12 failed to unenvelope");
	return ret;
    }

    if (der_heim_oid_cmp(&contentType, oid_id_pkcs7_data()) == 0)
	ret = parse_safe_content(context, c, content.data, content.length);

    der_free_octet_string(&content);
    der_free_oid(&contentType);

    return ret;
}


struct type bagtypes[] = {
    { oid_id_pkcs12_keyBag, keyBag_parser },
    { oid_id_pkcs12_pkcs8ShroudedKeyBag, ShroudedKeyBag_parser },
    { oid_id_pkcs12_certBag, certBag_parser },
    { oid_id_pkcs7_data, safeContent_parser },
    { oid_id_pkcs7_encryptedData, encryptedData_parser },
    { oid_id_pkcs7_envelopedData, envelopedData_parser }
};

static void
parse_pkcs12_type(hx509_context context,
		  struct hx509_collector *c,
		  const heim_oid *oid, 
		  const void *data, size_t length,
		  const PKCS12_Attributes *attrs)
{
    int i;

    for (i = 0; i < sizeof(bagtypes)/sizeof(bagtypes[0]); i++)
	if (der_heim_oid_cmp((*bagtypes[i].oid)(), oid) == 0)
	    (*bagtypes[i].func)(context, c, data, length, attrs);
}

static int
p12_init(hx509_context context,
	 hx509_certs certs, void **data, int flags, 
	 const char *residue, hx509_lock lock)
{
    struct ks_pkcs12 *p12;
    size_t len;
    void *buf;
    PKCS12_PFX pfx;
    PKCS12_AuthenticatedSafe as;
    int ret, i;
    struct hx509_collector *c;

    *data = NULL;

    if (lock == NULL)
	lock = _hx509_empty_lock;

    ret = _hx509_collector_alloc(context, lock, &c);
    if (ret)
	return ret;

    p12 = calloc(1, sizeof(*p12));
    if (p12 == NULL) {
	ret = ENOMEM;
	hx509_set_error_string(context, 0, ret, "out of memory");
	goto out;
    }

    p12->fn = strdup(residue);
    if (p12->fn == NULL) {
	ret = ENOMEM;
	hx509_set_error_string(context, 0, ret, "out of memory");
	goto out;
    }

    if (flags & HX509_CERTS_CREATE) {
	ret = hx509_certs_init(context, "MEMORY:ks-file-create",
			       0, lock, &p12->certs);
	if (ret == 0)
	    *data = p12;
	goto out;
    }

    ret = rk_undumpdata(residue, &buf, &len);
    if (ret) {
	hx509_clear_error_string(context);
	goto out;
    }

    ret = decode_PKCS12_PFX(buf, len, &pfx, NULL);
    rk_xfree(buf);
    if (ret) {
	hx509_set_error_string(context, 0, ret,
			       "Failed to decode the PFX in %s", residue);
	goto out;
    }

    if (der_heim_oid_cmp(&pfx.authSafe.contentType, oid_id_pkcs7_data()) != 0) {
	free_PKCS12_PFX(&pfx);
	ret = EINVAL;
	hx509_set_error_string(context, 0, ret,
			       "PKCS PFX isn't a pkcs7-data container");
	goto out;
    }

    if (pfx.authSafe.content == NULL) {
	free_PKCS12_PFX(&pfx);
	ret = EINVAL;
	hx509_set_error_string(context, 0, ret,
			       "PKCS PFX missing data");
	goto out;
    }

    {
	heim_octet_string asdata;

	ret = decode_PKCS12_OctetString(pfx.authSafe.content->data,
					pfx.authSafe.content->length,
					&asdata,
					NULL);
	free_PKCS12_PFX(&pfx);
	if (ret) {
	    hx509_clear_error_string(context);
	    goto out;
	}
	ret = decode_PKCS12_AuthenticatedSafe(asdata.data, 
					      asdata.length,
					      &as,
					      NULL);
	der_free_octet_string(&asdata);
	if (ret) {
	    hx509_clear_error_string(context);
	    goto out;
	}
    }

    for (i = 0; i < as.len; i++)
	parse_pkcs12_type(context,
			  c,
			  &as.val[i].contentType,
			  as.val[i].content->data,
			  as.val[i].content->length,
			  NULL);

    free_PKCS12_AuthenticatedSafe(&as);

    ret = _hx509_collector_collect_certs(context, c, &p12->certs);
    if (ret == 0)
	*data = p12;

out:
    _hx509_collector_free(c);

    if (ret && p12) {
	if (p12->fn)
	    free(p12->fn);
	if (p12->certs)
	    hx509_certs_free(&p12->certs);
	free(p12);
    }

    return ret;
}

static int
addBag(hx509_context context,
       PKCS12_AuthenticatedSafe *as,
       const heim_oid *oid,
       void *data,
       size_t length)
{
    void *ptr;
    int ret;

    ptr = realloc(as->val, sizeof(as->val[0]) * (as->len + 1));
    if (ptr == NULL) {
	hx509_set_error_string(context, 0, ENOMEM, "out of memory");
	return ENOMEM;
    }
    as->val = ptr;

    ret = der_copy_oid(oid, &as->val[as->len].contentType);
    if (ret) {
	hx509_set_error_string(context, 0, ret, "out of memory");
	return ret;
    }
    
    as->val[as->len].content = calloc(1, sizeof(*as->val[0].content));
    if (as->val[as->len].content == NULL) {
	der_free_oid(&as->val[as->len].contentType);
	hx509_set_error_string(context, 0, ENOMEM, "malloc out of memory");
	return ENOMEM;
    }

    as->val[as->len].content->data = data;
    as->val[as->len].content->length = length;

    as->len++;

    return 0;
}

static int
store_func(hx509_context context, void *ctx, hx509_cert c)
{
    PKCS12_AuthenticatedSafe *as = ctx;
    PKCS12_OctetString os;
    PKCS12_CertBag cb;
    size_t size;
    int ret;

    memset(&os, 0, sizeof(os));
    memset(&cb, 0, sizeof(cb));

    os.data = NULL;
    os.length = 0;

    ret = hx509_cert_binary(context, c, &os);
    if (ret)
	return ret;

    ASN1_MALLOC_ENCODE(PKCS12_OctetString,
		       cb.certValue.data,cb.certValue.length,
		       &os, &size, ret);
    free(os.data);
    if (ret)
	goto out;
    ret = der_copy_oid(oid_id_pkcs_9_at_certTypes_x509(), &cb.certType);
    if (ret) {
	free_PKCS12_CertBag(&cb);
	goto out;
    }
    ASN1_MALLOC_ENCODE(PKCS12_CertBag, os.data, os.length,
		       &cb, &size, ret);
    free_PKCS12_CertBag(&cb);
    if (ret)
	goto out;

    ret = addBag(context, as, oid_id_pkcs12_certBag(), os.data, os.length);

    if (_hx509_cert_private_key_exportable(c)) {
	hx509_private_key key = _hx509_cert_private_key(c);
	PKCS8PrivateKeyInfo pki;

	memset(&pki, 0, sizeof(pki));

	ret = der_parse_hex_heim_integer("00", &pki.version);
	if (ret)
	    return ret;
	ret = _hx509_private_key_oid(context, key, 
				     &pki.privateKeyAlgorithm.algorithm);
	if (ret) {
	    free_PKCS8PrivateKeyInfo(&pki);
	    return ret;
	}
	ret = _hx509_private_key_export(context,
					_hx509_cert_private_key(c),
					&pki.privateKey);
	if (ret) {
	    free_PKCS8PrivateKeyInfo(&pki);
	    return ret;
	}
	/* set attribute, oid_id_pkcs_9_at_localKeyId() */

	ASN1_MALLOC_ENCODE(PKCS8PrivateKeyInfo, os.data, os.length,
			   &pki, &size, ret);
	free_PKCS8PrivateKeyInfo(&pki);
	if (ret)
	    return ret;

	ret = addBag(context, as, oid_id_pkcs12_keyBag(), os.data, os.length);
	if (ret)
	    return ret;
    }

out:
    return ret;
}

static int
p12_store(hx509_context context, 
	  hx509_certs certs, void *data, int flags, hx509_lock lock)
{
    struct ks_pkcs12 *p12 = data;
    PKCS12_PFX pfx;
    PKCS12_AuthenticatedSafe as;
    PKCS12_OctetString asdata;
    size_t size;
    int ret;

    memset(&as, 0, sizeof(as));
    memset(&pfx, 0, sizeof(pfx));

    ret = hx509_certs_iter(context, p12->certs, store_func, &as);
    if (ret)
	goto out;

    ASN1_MALLOC_ENCODE(PKCS12_AuthenticatedSafe, asdata.data, asdata.length,
		       &as, &size, ret);
    free_PKCS12_AuthenticatedSafe(&as);
    if (ret)
	return ret;
		       
    ret = der_parse_hex_heim_integer("03", &pfx.version);
    if (ret) {
	free(asdata.data);
	goto out;
    }

    pfx.authSafe.content = calloc(1, sizeof(*pfx.authSafe.content));

    ASN1_MALLOC_ENCODE(PKCS12_OctetString, 
		       pfx.authSafe.content->data,
		       pfx.authSafe.content->length,
		       &asdata, &size, ret);
    free(asdata.data);
    if (ret)
	goto out;

    ret = der_copy_oid(oid_id_pkcs7_data(), &pfx.authSafe.contentType);
    if (ret)
	goto out;

    ASN1_MALLOC_ENCODE(PKCS12_PFX, asdata.data, asdata.length,
		       &pfx, &size, ret);
    if (ret)
	goto out;

#if 0
    const struct _hx509_password *pw;

    pw = _hx509_lock_get_passwords(lock);
    if (pw != NULL) {
	pfx.macData = calloc(1, sizeof(*pfx.macData));
	if (pfx.macData == NULL) {
	    ret = ENOMEM;
	    hx509_set_error_string(context, 0, ret, "malloc out of memory");
	    return ret;
	}
	if (pfx.macData == NULL) {
	    free(asdata.data);
	    goto out;
	}
    }
    ret = calculate_hash(&aspath, pw, pfx.macData);
#endif

    rk_dumpdata(p12->fn, asdata.data, asdata.length);
    free(asdata.data);

out:
    free_PKCS12_AuthenticatedSafe(&as);
    free_PKCS12_PFX(&pfx);

    return ret;
}


static int
p12_free(hx509_certs certs, void *data)
{
    struct ks_pkcs12 *p12 = data;
    hx509_certs_free(&p12->certs);
    free(p12->fn);
    free(p12);
    return 0;
}

static int 
p12_add(hx509_context context, hx509_certs certs, void *data, hx509_cert c)
{
    struct ks_pkcs12 *p12 = data;
    return hx509_certs_add(context, p12->certs, c);
}

static int 
p12_iter_start(hx509_context context,
	       hx509_certs certs,
	       void *data,
	       void **cursor)
{
    struct ks_pkcs12 *p12 = data;
    return hx509_certs_start_seq(context, p12->certs, cursor);
}

static int
p12_iter(hx509_context context,
	 hx509_certs certs,
	 void *data,
	 void *cursor,
	 hx509_cert *cert)
{
    struct ks_pkcs12 *p12 = data;
    return hx509_certs_next_cert(context, p12->certs, cursor, cert);
}

static int
p12_iter_end(hx509_context context,
	     hx509_certs certs,
	     void *data,
	     void *cursor)
{
    struct ks_pkcs12 *p12 = data;
    return hx509_certs_end_seq(context, p12->certs, cursor);
}

static struct hx509_keyset_ops keyset_pkcs12 = {
    "PKCS12",
    0,
    p12_init,
    p12_store,
    p12_free,
    p12_add,
    NULL,
    p12_iter_start,
    p12_iter,
    p12_iter_end
};

void
_hx509_ks_pkcs12_register(hx509_context context)
{
    _hx509_ks_register(context, &keyset_pkcs12);
}