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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15 *
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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())
303CK_RV
304object_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);
405error:
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//
423CK_RV
424object_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);
503error:
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
514CK_RV
515object_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
563CK_BBOOL
564object_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//
575CK_BBOOL
576object_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//
596CK_BBOOL
597object_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
614CK_BBOOL
615object_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
625CK_BBOOL
626object_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
639CK_BBOOL
640object_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
651CK_ULONG
652object_get_size(OBJECT *obj) {
653	CK_ULONG  size;
654
655	size = sizeof (OBJECT) + template_get_size(obj->template);
656
657	return (size);
658}
659
660CK_RV
661object_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
707CK_RV
708object_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);
749error:
750	if (new_tmpl)
751		(void) template_free(new_tmpl);
752	return (rc);
753}
754
755CK_RV
756object_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);
801error:
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//
813CK_RV
814object_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