xref: /illumos-gate/usr/src/lib/pkcs11/pkcs11_tpm/common/cert.c (revision 33f5ff17089e3a43e6e730bf80384c233123dbd9)
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288  */
289 /*
290  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
291  * Use is subject to license terms.
292  * Copyright 2012 Milan Jurik. All rights reserved.
293  */
294 
295 #include "tpmtok_int.h"
296 
297 /*
298  * cert_check_required_attributes
299  *
300  * Checks for required attributes for generic CKO_CERTIFICATE objects
301  *
302  *    CKA_CERTIFICATE_TYPE : must be present on MODE_CREATE.
303  */
304 static CK_RV
cert_check_required_attributes(TEMPLATE * tmpl,CK_ULONG mode)305 cert_check_required_attributes(TEMPLATE *tmpl, CK_ULONG mode)
306 {
307 	CK_ATTRIBUTE * attr = NULL;
308 	CK_BBOOL found;
309 
310 	if (! tmpl)
311 	return (CKR_FUNCTION_FAILED);
312 
313 	if (mode == MODE_CREATE) {
314 		found = template_attribute_find(tmpl,
315 		    CKA_CERTIFICATE_TYPE, &attr);
316 		if (found == FALSE) {
317 			return (CKR_TEMPLATE_INCOMPLETE);
318 		}
319 	}
320 
321 	return (template_check_required_base_attributes(tmpl, mode));
322 }
323 
324 /*
325  * cert_validate_attribute()
326  */
327 CK_RV
cert_validate_attribute(TEMPLATE * tmpl,CK_ATTRIBUTE * attr,CK_ULONG mode)328 cert_validate_attribute(TEMPLATE *tmpl, CK_ATTRIBUTE *attr, CK_ULONG mode)
329 {
330 	CK_CERTIFICATE_TYPE type;
331 
332 	switch (attr->type) {
333 		case CKA_CERTIFICATE_TYPE:
334 			if (mode != MODE_CREATE) {
335 				return (CKR_ATTRIBUTE_READ_ONLY);
336 			}
337 			type = *(CK_CERTIFICATE_TYPE *)attr->pValue;
338 			if (type == CKC_X_509 || type >= CKC_VENDOR_DEFINED)
339 				return (CKR_OK);
340 			else {
341 				return (CKR_ATTRIBUTE_VALUE_INVALID);
342 			}
343 		default:
344 			return (
345 			    template_validate_base_attribute(tmpl, attr, mode));
346 	}
347 }
348 
349 CK_RV
cert_x509_check_required_attributes(TEMPLATE * tmpl,CK_ULONG mode)350 cert_x509_check_required_attributes(TEMPLATE *tmpl, CK_ULONG mode) {
351 	CK_ATTRIBUTE *attr = NULL;
352 	CK_BBOOL found;
353 
354 	found = template_attribute_find(tmpl, CKA_SUBJECT, &attr);
355 	if (! found) {
356 		return (CKR_TEMPLATE_INCOMPLETE);
357 	}
358 	found = template_attribute_find(tmpl, CKA_VALUE, &attr);
359 	if (! found) {
360 		return (CKR_TEMPLATE_INCOMPLETE);
361 	}
362 	return (cert_check_required_attributes(tmpl, mode));
363 }
364 
365 /*
366  * cert_x509_set_default_attributes()
367  *
368  * Set the default attributes for X.509 certificates
369  *
370  *    CKA_ID            : empty string
371  *    CKA_ISSUER        : empty string
372  *    CKA_SERIAL_NUMBER : empty string
373  */
374 CK_RV
cert_x509_set_default_attributes(TEMPLATE * tmpl,CK_ULONG mode)375 cert_x509_set_default_attributes(TEMPLATE *tmpl, CK_ULONG mode)
376 {
377 	CK_ATTRIBUTE * id_attr = NULL;
378 	CK_ATTRIBUTE * issuer_attr = NULL;
379 	CK_ATTRIBUTE * serial_attr = NULL;
380 
381 	if (mode)
382 	id_attr = NULL;
383 
384 	id_attr = (CK_ATTRIBUTE *)malloc(sizeof (CK_ATTRIBUTE));
385 	issuer_attr = (CK_ATTRIBUTE *)malloc(sizeof (CK_ATTRIBUTE));
386 	serial_attr = (CK_ATTRIBUTE *)malloc(sizeof (CK_ATTRIBUTE));
387 
388 	if (! id_attr || ! issuer_attr || ! serial_attr) {
389 		if (id_attr) free(id_attr);
390 		if (issuer_attr) free(issuer_attr);
391 		if (serial_attr) free(serial_attr);
392 
393 		return (CKR_HOST_MEMORY);
394 	}
395 
396 	id_attr->type = CKA_ID;
397 	id_attr->ulValueLen = 0;
398 	id_attr->pValue = NULL;
399 
400 	issuer_attr->type = CKA_ISSUER;
401 	issuer_attr->ulValueLen  = 0;
402 	issuer_attr->pValue = NULL;
403 
404 	serial_attr->type = CKA_SERIAL_NUMBER;
405 	serial_attr->ulValueLen  = 0;
406 	serial_attr->pValue = NULL;
407 
408 	(void) template_update_attribute(tmpl, id_attr);
409 	(void) template_update_attribute(tmpl, issuer_attr);
410 	(void) template_update_attribute(tmpl, serial_attr);
411 
412 	return (CKR_OK);
413 }
414 
415 CK_RV
cert_x509_validate_attribute(TEMPLATE * tmpl,CK_ATTRIBUTE * attr,CK_ULONG mode)416 cert_x509_validate_attribute(TEMPLATE *tmpl,
417 CK_ATTRIBUTE *attr, CK_ULONG mode)
418 {
419 	switch (attr->type) {
420 		case CKA_SUBJECT:
421 		if (mode != MODE_CREATE)
422 			return (CKR_ATTRIBUTE_READ_ONLY);
423 		else
424 			return (CKR_OK);
425 
426 		case CKA_ID:
427 		case CKA_ISSUER:
428 		case CKA_SERIAL_NUMBER:
429 		return (CKR_OK);
430 
431 		case CKA_VALUE:
432 		if (mode != MODE_CREATE)
433 			return (CKR_ATTRIBUTE_READ_ONLY);
434 		else
435 			return (CKR_OK);
436 
437 		default:
438 		return (cert_validate_attribute(tmpl, attr, mode));
439 	}
440 }
441 
442 CK_RV
cert_vendor_check_required_attributes(TEMPLATE * tmpl,CK_ULONG mode)443 cert_vendor_check_required_attributes(TEMPLATE *tmpl, CK_ULONG mode)
444 {
445 	return (cert_check_required_attributes(tmpl, mode));
446 }
447 
448 CK_RV
cert_vendor_validate_attribute(TEMPLATE * tmpl,CK_ATTRIBUTE * attr,CK_ULONG mode)449 cert_vendor_validate_attribute(TEMPLATE *tmpl,
450 	CK_ATTRIBUTE *attr, CK_ULONG mode)
451 {
452 	return (cert_validate_attribute(tmpl, attr, mode));
453 }
454