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/*
* Licensed Materials - Property of IBM
*
* trousers - An open source TCG Software Stack
*
* (C) Copyright International Business Machines Corp. 2005, 2007
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include "trousers/tss.h"
#include "trousers/trousers.h"
#include "trousers_types.h"
#include "spi_utils.h"
#include "capabilities.h"
#include "tsplog.h"
#include "obj.h"
TSS_RESULT
obj_hash_add(TSS_HCONTEXT tspContext, UINT32 type, TSS_HOBJECT *phObject)
{
TSS_RESULT result;
struct tr_hash_obj *hash = calloc(1, sizeof(struct tr_hash_obj));
if (hash == NULL) {
LogError("malloc of %zd bytes failed.",
sizeof(struct tr_hash_obj));
return TSPERR(TSS_E_OUTOFMEMORY);
}
if ((type == TSS_HASH_SHA1) ||
(type == TSS_HASH_DEFAULT)) {
hash->type = TSS_HASH_SHA1;
hash->hashSize = 20;
} else if (type == TSS_HASH_OTHER) {
hash->type = TSS_HASH_OTHER;
hash->hashSize = 0;
}
if ((result = obj_list_add(&hash_list, tspContext, 0, hash, phObject))) {
free(hash);
return result;
}
return TSS_SUCCESS;
}
TSS_BOOL
obj_is_hash(TSS_HOBJECT hObject)
{
TSS_BOOL answer = FALSE;
if ((obj_list_get_obj(&hash_list, hObject))) {
answer = TRUE;
obj_list_put(&hash_list);
}
return answer;
}
TSS_RESULT
obj_hash_get_tsp_context(TSS_HHASH hHash, TSS_HCONTEXT *tspContext)
{
struct tsp_object *obj;
if ((obj = obj_list_get_obj(&hash_list, hHash)) == NULL)
return TSPERR(TSS_E_INVALID_HANDLE);
*tspContext = obj->tspContext;
obj_list_put(&hash_list);
return TSS_SUCCESS;
}
TSS_RESULT
obj_hash_set_value(TSS_HHASH hHash, UINT32 size, BYTE *value)
{
struct tsp_object *obj;
struct tr_hash_obj *hash;
TSS_RESULT result = TSS_SUCCESS;
if ((obj = obj_list_get_obj(&hash_list, hHash)) == NULL)
return TSPERR(TSS_E_INVALID_HANDLE);
hash = (struct tr_hash_obj *)obj->data;
if (hash->type != TSS_HASH_OTHER &&
size != TCPA_SHA1_160_HASH_LEN) {
result = TSPERR(TSS_E_HASH_INVALID_LENGTH);
goto done;
}
free(hash->hashData);
if ((hash->hashData = calloc(1, size)) == NULL) {
LogError("malloc of %d bytes failed.", size);
result = TSPERR(TSS_E_OUTOFMEMORY);
goto done;
}
hash->hashSize = size;
memcpy(hash->hashData, value, size);
done:
obj_list_put(&hash_list);
return result;
}
TSS_RESULT
obj_hash_get_value(TSS_HHASH hHash, UINT32 *size, BYTE **value)
{
struct tsp_object *obj;
struct tr_hash_obj *hash;
TSS_RESULT result = TSS_SUCCESS;
if ((obj = obj_list_get_obj(&hash_list, hHash)) == NULL)
return TSPERR(TSS_E_INVALID_HANDLE);
hash = (struct tr_hash_obj *)obj->data;
if (hash->hashData == NULL) {
result = TSPERR(TSS_E_HASH_NO_DATA);
goto done;
}
if ((*value = calloc_tspi(obj->tspContext, hash->hashSize)) == NULL) {
LogError("malloc of %d bytes failed.", hash->hashSize);
result = TSPERR(TSS_E_OUTOFMEMORY);
goto done;
}
*size = hash->hashSize;
memcpy(*value, hash->hashData, *size);
done:
obj_list_put(&hash_list);
return result;
}
TSS_RESULT
obj_hash_update_value(TSS_HHASH hHash, UINT32 size, BYTE *data)
{
struct tsp_object *obj;
struct tr_hash_obj *hash;
TSS_RESULT result = TSS_SUCCESS;
if ((obj = obj_list_get_obj(&hash_list, hHash)) == NULL)
return TSPERR(TSS_E_INVALID_HANDLE);
hash = (struct tr_hash_obj *)obj->data;
if (hash->type != TSS_HASH_SHA1 &&
hash->type != TSS_HASH_DEFAULT) {
result = TSPERR(TSS_E_FAIL);
goto done;
}
if (hash->hashUpdateBuffer == NULL) {
hash->hashUpdateBuffer = calloc(1, size);
if (hash->hashUpdateBuffer == NULL) {
LogError("malloc of %u bytes failed.", size);
result = TSPERR(TSS_E_OUTOFMEMORY);
goto done;
}
} else {
hash->hashUpdateBuffer = realloc(hash->hashUpdateBuffer,
size + hash->hashUpdateSize);
if (hash->hashUpdateBuffer == NULL) {
LogError("malloc of %u bytes failed.", size + hash->hashUpdateSize);
result = TSPERR(TSS_E_OUTOFMEMORY);
goto done;
}
}
memcpy(&hash->hashUpdateBuffer[hash->hashUpdateSize], data, size);
hash->hashUpdateSize += size;
if (hash->hashData == NULL) {
hash->hashData = calloc(1, TCPA_SHA1_160_HASH_LEN);
if (hash->hashData == NULL) {
LogError("malloc of %d bytes failed.", TCPA_SHA1_160_HASH_LEN);
result = TSPERR(TSS_E_OUTOFMEMORY);
goto done;
}
}
result = Trspi_Hash(TSS_HASH_SHA1, hash->hashUpdateSize, hash->hashUpdateBuffer,
hash->hashData);
done:
obj_list_put(&hash_list);
return result;
}
void
__tspi_hash_free(void *data)
{
struct tr_hash_obj *hash = (struct tr_hash_obj *)data;
free(hash->hashData);
free(hash->hashUpdateBuffer);
free(hash);
}
/*
* remove hash object hObject from the list
*/
TSS_RESULT
obj_hash_remove(TSS_HOBJECT hObject, TSS_HCONTEXT tspContext)
{
TSS_RESULT result;
if ((result = obj_list_remove(&hash_list, &__tspi_hash_free, hObject, tspContext)))
return result;
return TSS_SUCCESS;
}
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