1 /*
2 * Common Public License Version 0.5
3 *
4 * THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF
5 * THIS COMMON PUBLIC LICENSE ("AGREEMENT"). ANY USE,
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284 *
285 *
286 *
287 * (C) COPYRIGHT International Business Machines Corp. 2001, 2002
288 */
289 /*
290 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
291 * Use is subject to license terms.
292 */
293
294 #include "tpmtok_int.h"
295
296 // object_create()
297 //
298 // Creates an object with the specified attributes. Verifies that all required
299 // attributes are present and adds any missing attributes that have Cryptoki
300 // defined default values. This routine does not check whether the session is
301 // authorized to create the object. That is done elsewhere
302 // (see object_mgr_create())
303 CK_RV
object_create(CK_ATTRIBUTE * pTemplate,CK_ULONG ulCount,OBJECT ** obj)304 object_create(CK_ATTRIBUTE * pTemplate,
305 CK_ULONG ulCount,
306 OBJECT ** obj)
307 {
308 OBJECT * o = NULL;
309 CK_ATTRIBUTE * attr = NULL;
310 CK_ATTRIBUTE * sensitive = NULL;
311 CK_ATTRIBUTE * extractable = NULL;
312 CK_ATTRIBUTE * local = NULL;
313 CK_BBOOL class_given = FALSE;
314 CK_BBOOL subclass_given = FALSE;
315 CK_BBOOL flag;
316 CK_ULONG class = 0xFFFFFFFF, subclass = 0xFFFFFFFF;
317 CK_RV rc;
318 unsigned int i;
319
320 if (! pTemplate) {
321 return (CKR_FUNCTION_FAILED);
322 }
323 // extract the object class and subclass
324 //
325 attr = pTemplate;
326 for (i = 0; i < ulCount; i++, attr++) {
327 if (attr->type == CKA_CLASS) {
328 class = *(CK_OBJECT_CLASS *)attr->pValue;
329 class_given = TRUE;
330 }
331
332 if (attr->type == CKA_CERTIFICATE_TYPE) {
333 subclass = *(CK_CERTIFICATE_TYPE *)attr->pValue;
334 subclass_given = TRUE;
335 }
336
337 if (attr->type == CKA_KEY_TYPE) {
338 subclass = *(CK_KEY_TYPE *)attr->pValue;
339 subclass_given = TRUE;
340 }
341
342 if (attr->type == CKA_HW_FEATURE_TYPE) {
343 subclass = *(CK_HW_FEATURE_TYPE *)attr->pValue;
344 subclass_given = TRUE;
345 }
346 }
347
348 if (class_given == FALSE) {
349 return (CKR_TEMPLATE_INCOMPLETE);
350 }
351 if (class != CKO_DATA && subclass_given != TRUE) {
352 return (CKR_TEMPLATE_INCOMPLETE);
353 }
354
355 rc = object_create_skel(pTemplate, ulCount,
356 MODE_CREATE, class, subclass, &o);
357 if (rc != CKR_OK) {
358 return (rc);
359 }
360 // for key objects, we need be careful...
361 //
362 // note: I would think that keys loaded with C_CreateObject should
363 // have their CKA_NEVER_EXTRACTABLE == FALSE and
364 // CKA_ALWAYS_SENSITIVE == FALSE since the key data was presumably
365 // stored in the clear prior to the call to C_CreateObject. The
366 // PKCS #11 spec doesn't impose this restriction however.
367 //
368 if (class == CKO_PRIVATE_KEY || class == CKO_SECRET_KEY) {
369 rc = template_attribute_find(o->template, CKA_SENSITIVE, &attr);
370 if (rc == FALSE) {
371 rc = CKR_FUNCTION_FAILED;
372 goto error;
373 }
374
375 flag = *(CK_BBOOL *)attr->pValue;
376
377 rc = build_attribute(CKA_ALWAYS_SENSITIVE, &flag,
378 sizeof (CK_BYTE), &sensitive);
379 if (rc != CKR_OK) {
380 goto error;
381 }
382
383 rc = template_attribute_find(o->template, CKA_EXTRACTABLE,
384 &attr);
385 if (rc == FALSE) {
386 rc = CKR_FUNCTION_FAILED;
387 goto error;
388 }
389
390 flag = *(CK_BBOOL *)attr->pValue;
391 flag = (~flag) & 0x1;
392
393 rc = build_attribute(CKA_NEVER_EXTRACTABLE, &flag,
394 sizeof (CK_BYTE), &extractable);
395 if (rc != CKR_OK) {
396 goto error;
397 }
398 (void) template_update_attribute(o->template, sensitive);
399 (void) template_update_attribute(o->template, extractable);
400 }
401
402 *obj = o;
403
404 return (CKR_OK);
405 error:
406 if (sensitive) free(sensitive);
407 if (extractable) free(extractable);
408 if (local) free(local);
409
410 (void) object_free(o);
411 return (rc);
412 }
413
414 // object_copy()
415 //
416 // Builds a copy of the specified object. The new object gets the original
417 // object's attribute template plus any additional attributes that are
418 // specified. Verifies that all required attributes are present. This
419 // routine does not check whether the session is authorized to copy the
420 // object -- routines at the individual object level don't have the
421 // concept of "session". These checks are done by the object manager.
422 //
423 CK_RV
object_copy(CK_ATTRIBUTE * pTemplate,CK_ULONG ulCount,OBJECT * old_obj,OBJECT ** new_obj)424 object_copy(CK_ATTRIBUTE * pTemplate,
425 CK_ULONG ulCount,
426 OBJECT * old_obj,
427 OBJECT ** new_obj)
428 {
429 TEMPLATE * tmpl = NULL;
430 TEMPLATE * new_tmpl = NULL;
431 OBJECT * o = NULL;
432 CK_BBOOL found;
433 CK_ULONG class, subclass;
434 CK_RV rc;
435
436
437 if (! old_obj || ! pTemplate || ! new_obj) {
438 return (CKR_FUNCTION_FAILED);
439 }
440 o = (OBJECT *)malloc(sizeof (OBJECT));
441 tmpl = (TEMPLATE *)malloc(sizeof (TEMPLATE));
442 new_tmpl = (TEMPLATE *)malloc(sizeof (TEMPLATE));
443
444 if (! o || ! tmpl || ! new_tmpl) {
445 rc = CKR_HOST_MEMORY;
446 goto error;
447 }
448
449 (void) memset(o, 0x0, sizeof (OBJECT));
450 (void) memset(tmpl, 0x0, sizeof (TEMPLATE));
451 (void) memset(new_tmpl, 0x0, sizeof (TEMPLATE));
452
453 // copy the original object's attribute template
454 //
455 rc = template_copy(tmpl, old_obj->template);
456 if (rc != CKR_OK) {
457 goto error;
458 }
459 rc = template_add_attributes(new_tmpl, pTemplate, ulCount);
460 if (rc != CKR_OK) {
461 goto error;
462 }
463 // at this point, the new object has the list of attributes. we need
464 // to do some more checking now:
465 // 1) invalid attribute values
466 // 2) missing required attributes
467 // 3) attributes inappropriate for the object class
468 // 4) conflicting attributes/values
469 //
470
471 found = template_get_class(tmpl, &class, &subclass);
472 if (found == FALSE) {
473 rc = CKR_TEMPLATE_INCONSISTENT;
474 goto error;
475 }
476
477 // The user cannot change object classes so we assume the existing
478 // object attributes are valid. we still need to check the new
479 // attributes. We cannot merge the new attributes in with the
480 // old ones and then check for validity because some attributes
481 // are added internally and are not allowed to be specified by
482 // the user (ie. CKA_LOCAL for key types) but may still be part
483 // of the old template.
484 rc = template_validate_attributes(new_tmpl, class, subclass,
485 MODE_COPY);
486 if (rc != CKR_OK)
487 goto error;
488
489 rc = template_merge(tmpl, &new_tmpl);
490 if (rc != CKR_OK) {
491 goto error;
492 }
493
494 rc = template_check_required_attributes(tmpl, class,
495 subclass, MODE_COPY);
496 if (rc != CKR_OK)
497 goto error;
498
499 o->template = tmpl;
500 *new_obj = o;
501
502 return (CKR_OK);
503 error:
504 if (tmpl)
505 (void) template_free(tmpl);
506 if (new_tmpl)
507 (void) template_free(new_tmpl);
508 if (o)
509 (void) object_free(o);
510
511 return (rc);
512 }
513
514 CK_RV
object_flatten(OBJECT * obj,CK_BYTE ** data,UINT32 * len)515 object_flatten(OBJECT * obj,
516 CK_BYTE ** data,
517 UINT32 *len)
518 {
519 CK_BYTE * buf = NULL;
520 CK_ULONG_32 tmpl_len, total_len;
521 CK_ULONG_32 offset;
522 CK_ULONG_32 count;
523 long rc;
524
525 if (! obj) {
526 return (CKR_FUNCTION_FAILED);
527 }
528 count = template_get_count(obj->template);
529 tmpl_len = template_get_compressed_size(obj->template);
530
531 total_len = tmpl_len + sizeof (CK_OBJECT_CLASS_32) +
532 sizeof (CK_ULONG_32) + 8;
533
534 buf = (CK_BYTE *)malloc(total_len);
535 if (!buf) {
536 return (CKR_HOST_MEMORY);
537 }
538
539 (void) memset((CK_BYTE *)buf, 0x0, total_len);
540
541 offset = 0;
542
543 (void) memcpy(buf + offset, &obj->class, sizeof (CK_OBJECT_CLASS_32));
544 offset += sizeof (CK_OBJECT_CLASS_32);
545
546 (void) memcpy(buf + offset, &count, sizeof (CK_ULONG_32));
547 offset += sizeof (CK_ULONG_32);
548
549 (void) memcpy(buf + offset, &obj->name, sizeof (CK_BYTE) * 8);
550 offset += 8;
551 rc = template_flatten(obj->template, buf + offset);
552 if (rc != CKR_OK) {
553 free(buf);
554 return (rc);
555 }
556
557 *data = buf;
558 *len = total_len;
559
560 return (CKR_OK);
561 }
562
563 CK_BBOOL
object_free(OBJECT * obj)564 object_free(OBJECT *obj)
565 {
566 (void) template_free(obj->template);
567 free(obj);
568
569 return (TRUE);
570 }
571
572
573 // object_is_modifiable()
574 //
575 CK_BBOOL
object_is_modifiable(OBJECT * obj)576 object_is_modifiable(OBJECT *obj)
577 {
578 CK_ATTRIBUTE * attr = NULL;
579 CK_BBOOL modifiable;
580 CK_BBOOL found;
581
582 found = template_attribute_find(obj->template, CKA_MODIFIABLE, &attr);
583 if (found == FALSE)
584 return (TRUE);
585
586 modifiable = *(CK_BBOOL *)attr->pValue;
587
588 return (modifiable);
589 }
590
591
592 // object_is_private()
593 //
594 // an is_private member should probably be added to OBJECT
595 //
596 CK_BBOOL
object_is_private(OBJECT * obj)597 object_is_private(OBJECT *obj) {
598 CK_ATTRIBUTE * attr = NULL;
599 CK_BBOOL priv;
600 CK_BBOOL found;
601
602 found = template_attribute_find(obj->template, CKA_PRIVATE, &attr);
603 if (found == FALSE)
604 return (TRUE);
605
606 if (attr == NULL)
607 return (TRUE);
608
609 priv = *((CK_BBOOL *)attr->pValue);
610
611 return (priv);
612 }
613
614 CK_BBOOL
object_is_public(OBJECT * obj)615 object_is_public(OBJECT *obj) {
616 CK_BBOOL rc;
617
618 rc = object_is_private(obj);
619
620 if (rc)
621 return (FALSE);
622 return (TRUE);
623 }
624
625 CK_BBOOL
object_is_token_object(OBJECT * obj)626 object_is_token_object(OBJECT *obj) {
627 CK_ATTRIBUTE * attr = NULL;
628 CK_BBOOL is_token;
629 CK_BBOOL found;
630
631 found = template_attribute_find(obj->template,
632 CKA_TOKEN, &attr);
633 if (found == FALSE)
634 return (FALSE);
635 is_token = *(CK_BBOOL *)attr->pValue;
636 return (is_token);
637 }
638
639 CK_BBOOL
object_is_session_object(OBJECT * obj)640 object_is_session_object(OBJECT *obj) {
641 CK_BBOOL rc;
642
643 rc = object_is_token_object(obj);
644
645 if (rc)
646 return (FALSE);
647 else
648 return (TRUE);
649 }
650
651 CK_ULONG
object_get_size(OBJECT * obj)652 object_get_size(OBJECT *obj) {
653 CK_ULONG size;
654
655 size = sizeof (OBJECT) + template_get_size(obj->template);
656
657 return (size);
658 }
659
660 CK_RV
object_get_attribute_values(OBJECT * obj,CK_ATTRIBUTE * pTemplate,CK_ULONG ulCount)661 object_get_attribute_values(OBJECT * obj,
662 CK_ATTRIBUTE * pTemplate,
663 CK_ULONG ulCount)
664 {
665 TEMPLATE *obj_tmpl = NULL;
666 CK_ATTRIBUTE *attr = NULL;
667 CK_ULONG i;
668 CK_BBOOL flag;
669 CK_RV rc;
670
671 rc = CKR_OK;
672
673 obj_tmpl = obj->template;
674
675 for (i = 0; i < ulCount; i++) {
676 flag = template_check_exportability(obj_tmpl,
677 pTemplate[i].type);
678 if (flag == FALSE) {
679 rc = CKR_ATTRIBUTE_SENSITIVE;
680 pTemplate[i].ulValueLen = (CK_ULONG) - 1;
681 continue;
682 }
683
684 flag = template_attribute_find(obj_tmpl,
685 pTemplate[i].type, &attr);
686 if (flag == FALSE) {
687 rc = CKR_ATTRIBUTE_TYPE_INVALID;
688 pTemplate[i].ulValueLen = (CK_ULONG) - 1;
689 continue;
690 }
691
692 if (pTemplate[i].pValue == NULL) {
693 pTemplate[i].ulValueLen = attr->ulValueLen;
694 } else if (pTemplate[i].ulValueLen >= attr->ulValueLen) {
695 (void) memcpy(pTemplate[i].pValue, attr->pValue,
696 attr->ulValueLen);
697 pTemplate[i].ulValueLen = attr->ulValueLen;
698 } else {
699 rc = CKR_BUFFER_TOO_SMALL;
700 pTemplate[i].ulValueLen = (CK_ULONG) - 1;
701 }
702 }
703
704 return (rc);
705 }
706
707 CK_RV
object_set_attribute_values(OBJECT * obj,CK_ATTRIBUTE * pTemplate,CK_ULONG ulCount)708 object_set_attribute_values(OBJECT * obj,
709 CK_ATTRIBUTE * pTemplate,
710 CK_ULONG ulCount)
711 {
712 TEMPLATE * new_tmpl;
713 CK_BBOOL found;
714 CK_ULONG class, subclass;
715 CK_RV rc;
716
717 if (! obj || ! pTemplate) {
718 return (CKR_FUNCTION_FAILED);
719 }
720
721 found = template_get_class(obj->template, &class, &subclass);
722 if (found == FALSE) {
723 rc = CKR_FUNCTION_FAILED;
724 goto error;
725 }
726
727 new_tmpl = (TEMPLATE *)malloc(sizeof (TEMPLATE));
728 if (! new_tmpl) {
729 return (CKR_HOST_MEMORY);
730 }
731 (void) memset(new_tmpl, 0x0, sizeof (TEMPLATE));
732
733 rc = template_add_attributes(new_tmpl, pTemplate, ulCount);
734 if (rc != CKR_OK) {
735 goto error;
736 }
737
738 rc = template_validate_attributes(new_tmpl, class,
739 subclass, MODE_MODIFY);
740 if (rc != CKR_OK) {
741 goto error;
742 }
743
744 rc = template_merge(obj->template, &new_tmpl);
745 if (rc != CKR_OK) {
746 return (rc);
747 }
748 return (CKR_OK);
749 error:
750 if (new_tmpl)
751 (void) template_free(new_tmpl);
752 return (rc);
753 }
754
755 CK_RV
object_restore(CK_BYTE * data,OBJECT ** new_obj,CK_BBOOL replace)756 object_restore(CK_BYTE *data, OBJECT **new_obj, CK_BBOOL replace) {
757 TEMPLATE * tmpl = NULL;
758 OBJECT * obj = NULL;
759 CK_ULONG offset = 0;
760 CK_ULONG_32 count = 0;
761 CK_RV rc;
762
763 if (! data || ! new_obj) {
764 return (CKR_FUNCTION_FAILED);
765 }
766 obj = (OBJECT *)malloc(sizeof (OBJECT));
767 if (! obj) {
768 rc = CKR_HOST_MEMORY;
769 goto error;
770 }
771
772
773 (void) memset(obj, 0x0, sizeof (OBJECT));
774
775 (void) memcpy(&obj->class, data + offset, sizeof (CK_OBJECT_CLASS_32));
776 offset += sizeof (CK_OBJECT_CLASS_32);
777
778 (void) memcpy(&count, data + offset, sizeof (CK_ULONG_32));
779 offset += sizeof (CK_ULONG_32);
780
781
782 (void) memcpy(&obj->name, data + offset, 8);
783 offset += 8;
784
785 rc = template_unflatten(&tmpl, data + offset, count);
786 if (rc != CKR_OK) {
787 goto error;
788 }
789 obj->template = tmpl;
790
791 if (replace == FALSE) {
792 *new_obj = obj;
793 } else {
794 (void) template_free((*new_obj)->template);
795 (void) memcpy(*new_obj, obj, sizeof (OBJECT));
796
797 free(obj);
798 }
799
800 return (CKR_OK);
801 error:
802 if (obj)
803 (void) object_free(obj);
804 if (tmpl)
805 (void) template_free(tmpl);
806
807 return (rc);
808 }
809
810
811 //
812 //
813 CK_RV
object_create_skel(CK_ATTRIBUTE * pTemplate,CK_ULONG ulCount,CK_ULONG mode,CK_ULONG class,CK_ULONG subclass,OBJECT ** obj)814 object_create_skel(CK_ATTRIBUTE * pTemplate,
815 CK_ULONG ulCount,
816 CK_ULONG mode,
817 CK_ULONG class,
818 CK_ULONG subclass,
819 OBJECT ** obj) {
820 TEMPLATE * tmpl = NULL;
821 TEMPLATE * tmpl2 = NULL;
822 OBJECT * o = NULL;
823 CK_RV rc;
824
825
826 if (! obj) {
827 return (CKR_FUNCTION_FAILED);
828 }
829 if (! pTemplate && (ulCount != 0)) {
830 return (CKR_FUNCTION_FAILED);
831 }
832 o = (OBJECT *)malloc(sizeof (OBJECT));
833 tmpl = (TEMPLATE *)malloc(sizeof (TEMPLATE));
834 tmpl2 = (TEMPLATE *)malloc(sizeof (TEMPLATE));
835
836 if (! o || ! tmpl || ! tmpl2) {
837 rc = CKR_HOST_MEMORY;
838 goto done;
839 }
840 (void) memset(o, 0x0, sizeof (OBJECT));
841 (void) memset(tmpl, 0x0, sizeof (TEMPLATE));
842 (void) memset(tmpl2, 0x0, sizeof (TEMPLATE));
843
844
845 rc = template_add_default_attributes(tmpl, class, subclass, mode);
846 if (rc != CKR_OK)
847 goto done;
848
849 rc = template_add_attributes(tmpl2, pTemplate, ulCount);
850 if (rc != CKR_OK)
851 goto done;
852
853
854 // at this point, the new template has the list of attributes. we need
855 // to do some more checking now:
856 // 1) invalid attribute values
857 // 2) missing required attributes
858 // 3) attributes inappropriate for the object class
859 // 4) conflicting attributes/values
860 //
861
862 rc = template_validate_attributes(tmpl2, class, subclass, mode);
863 if (rc != CKR_OK) {
864 goto done;
865 }
866
867 rc = template_check_required_attributes(tmpl2, class, subclass, mode);
868 if (rc != CKR_OK) {
869 goto done;
870 }
871
872 rc = template_merge(tmpl, &tmpl2);
873 if (rc != CKR_OK) {
874 goto done;
875 }
876 // at this point, we should have a valid object with correct attributes
877 //
878 o->template = tmpl;
879 *obj = o;
880
881 return (CKR_OK);
882 done:
883 if (o) free(o);
884 if (tmpl)
885 (void) template_free(tmpl);
886 if (tmpl2)
887 (void) template_free(tmpl2);
888
889 return (rc);
890 }
891