/
tee_api_objects.c
799 lines (644 loc) · 18.6 KB
/
tee_api_objects.c
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// SPDX-License-Identifier: BSD-2-Clause
/*
* Copyright (c) 2014, STMicroelectronics International N.V.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 <stdlib.h>
#include <string.h>
#include <tee_api.h>
#include <utee_syscalls.h>
//#include "tee_api_private.h"
#include "utee_types.h"
#define TEE_USAGE_DEFAULT 0xffffffff
#define TEE_ATTR_BIT_VALUE (1 << 29)
#define TEE_ATTR_BIT_PROTECTED (1 << 28)
void __utee_from_attr(struct utee_attribute *ua, const TEE_Attribute *attrs,
uint32_t attr_count)
{
size_t n;
for (n = 0; n < attr_count; n++) {
ua[n].attribute_id = attrs[n].attributeID;
if (attrs[n].attributeID & TEE_ATTR_BIT_VALUE) {
ua[n].a = attrs[n].content.value.a;
ua[n].b = attrs[n].content.value.b;
} else {
ua[n].a = (uintptr_t)attrs[n].content.ref.buffer;
ua[n].b = attrs[n].content.ref.length;
}
}
}
/* Data and Key Storage API - Generic Object Functions */
/*
* Use of this function is deprecated
* new code SHOULD use the TEE_GetObjectInfo1 function instead
* These functions will be removed at some future major revision of
* this specification
*/
void TEE_GetObjectInfo(TEE_ObjectHandle object, TEE_ObjectInfo *objectInfo)
{
TEE_Result res;
res = utee_cryp_obj_get_info((unsigned long)object, objectInfo);
if (res != TEE_SUCCESS)
TEE_Panic(res);
if (objectInfo->objectType == TEE_TYPE_CORRUPTED_OBJECT) {
objectInfo->keySize = 0;
objectInfo->maxKeySize = 0;
objectInfo->objectUsage = 0;
objectInfo->dataSize = 0;
objectInfo->dataPosition = 0;
objectInfo->handleFlags = 0;
}
}
TEE_Result TEE_GetObjectInfo1(TEE_ObjectHandle object, TEE_ObjectInfo *objectInfo)
{
TEE_Result res;
res = utee_cryp_obj_get_info((unsigned long)object, objectInfo);
if (res != TEE_SUCCESS &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
/*
* Use of this function is deprecated
* new code SHOULD use the TEE_RestrictObjectUsage1 function instead
* These functions will be removed at some future major revision of
* this specification
*/
void TEE_RestrictObjectUsage(TEE_ObjectHandle object, uint32_t objectUsage)
{
TEE_Result res;
TEE_ObjectInfo objectInfo;
res = utee_cryp_obj_get_info((unsigned long)object, &objectInfo);
if (objectInfo.objectType == TEE_TYPE_CORRUPTED_OBJECT)
return;
res = TEE_RestrictObjectUsage1(object, objectUsage);
if (res != TEE_SUCCESS)
TEE_Panic(res);
}
TEE_Result TEE_RestrictObjectUsage1(TEE_ObjectHandle object, uint32_t objectUsage)
{
TEE_Result res;
res = utee_cryp_obj_restrict_usage((unsigned long)object, objectUsage);
if (res != TEE_SUCCESS &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
TEE_Result TEE_GetObjectBufferAttribute(TEE_ObjectHandle object,
uint32_t attributeID, void *buffer,
uint32_t *size)
{
TEE_Result res;
TEE_ObjectInfo info;
uint64_t sz;
res = utee_cryp_obj_get_info((unsigned long)object, &info);
if (res != TEE_SUCCESS)
goto exit;
/* This function only supports reference attributes */
if ((attributeID & TEE_ATTR_BIT_VALUE)) {
res = TEE_ERROR_BAD_PARAMETERS;
goto exit;
}
sz = *size;
res = utee_cryp_obj_get_attr((unsigned long)object, attributeID,
buffer, &sz);
*size = sz;
exit:
if (res != TEE_SUCCESS &&
res != TEE_ERROR_ITEM_NOT_FOUND &&
res != TEE_ERROR_SHORT_BUFFER &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
TEE_Result TEE_GetObjectValueAttribute(TEE_ObjectHandle object,
uint32_t attributeID, uint32_t *a,
uint32_t *b)
{
TEE_Result res;
TEE_ObjectInfo info;
uint32_t buf[2];
uint64_t size = sizeof(buf);
res = utee_cryp_obj_get_info((unsigned long)object, &info);
if (res != TEE_SUCCESS)
goto exit;
/* This function only supports value attributes */
if (!(attributeID & TEE_ATTR_BIT_VALUE)) {
res = TEE_ERROR_BAD_PARAMETERS;
goto exit;
}
res = utee_cryp_obj_get_attr((unsigned long)object, attributeID, buf,
&size);
exit:
if (res != TEE_SUCCESS &&
res != TEE_ERROR_ITEM_NOT_FOUND &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
if (size != sizeof(buf))
TEE_Panic(0);
if (res == TEE_SUCCESS) {
if (a)
*a = buf[0];
if (b)
*b = buf[1];
}
return res;
}
void TEE_CloseObject(TEE_ObjectHandle object)
{
TEE_Result res;
if (object == TEE_HANDLE_NULL)
return;
res = utee_cryp_obj_close((unsigned long)object);
if (res != TEE_SUCCESS)
TEE_Panic(res);
}
/* Data and Key Storage API - Transient Object Functions */
TEE_Result TEE_AllocateTransientObject(TEE_ObjectType objectType,
uint32_t maxKeySize,
TEE_ObjectHandle *object)
{
TEE_Result res;
uint32_t obj;
res = utee_cryp_obj_alloc(objectType, maxKeySize, &obj);
if (res != TEE_SUCCESS &&
res != TEE_ERROR_OUT_OF_MEMORY &&
res != TEE_ERROR_NOT_SUPPORTED)
TEE_Panic(res);
if (res == TEE_SUCCESS)
*object = (TEE_ObjectHandle)(uintptr_t)obj;
return res;
}
void TEE_FreeTransientObject(TEE_ObjectHandle object)
{
TEE_Result res;
TEE_ObjectInfo info;
if (object == TEE_HANDLE_NULL)
return;
res = utee_cryp_obj_get_info((unsigned long)object, &info);
if (res != TEE_SUCCESS)
TEE_Panic(res);
if ((info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT) != 0)
TEE_Panic(0);
res = utee_cryp_obj_close((unsigned long)object);
if (res != TEE_SUCCESS)
TEE_Panic(res);
}
void TEE_ResetTransientObject(TEE_ObjectHandle object)
{
TEE_Result res;
TEE_ObjectInfo info;
if (object == TEE_HANDLE_NULL)
return;
res = utee_cryp_obj_get_info((unsigned long)object, &info);
if (res != TEE_SUCCESS)
TEE_Panic(res);
if ((info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT) != 0)
TEE_Panic(0);
res = utee_cryp_obj_reset((unsigned long)object);
if (res != TEE_SUCCESS)
TEE_Panic(res);
}
TEE_Result TEE_PopulateTransientObject(TEE_ObjectHandle object,
const TEE_Attribute *attrs,
uint32_t attrCount)
{
TEE_Result res;
TEE_ObjectInfo info;
struct utee_attribute ua[attrCount];
res = utee_cryp_obj_get_info((unsigned long)object, &info);
if (res != TEE_SUCCESS)
TEE_Panic(res);
/* Must be a transient object */
if ((info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT) != 0)
TEE_Panic(0);
/* Must not be initialized already */
if ((info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) != 0)
TEE_Panic(0);
__utee_from_attr(ua, attrs, attrCount);
res = utee_cryp_obj_populate((unsigned long)object, ua, attrCount);
if (res != TEE_SUCCESS && res != TEE_ERROR_BAD_PARAMETERS)
TEE_Panic(res);
return res;
}
void TEE_InitRefAttribute(TEE_Attribute *attr, uint32_t attributeID,
const void *buffer, uint32_t length)
{
if (attr == NULL)
TEE_Panic(0);
if ((attributeID & TEE_ATTR_BIT_VALUE) != 0)
TEE_Panic(0);
attr->attributeID = attributeID;
attr->content.ref.buffer = (void *)buffer;
attr->content.ref.length = length;
}
void TEE_InitValueAttribute(TEE_Attribute *attr, uint32_t attributeID,
uint32_t a, uint32_t b)
{
if (attr == NULL)
TEE_Panic(0);
if ((attributeID & TEE_ATTR_BIT_VALUE) == 0)
TEE_Panic(0);
attr->attributeID = attributeID;
attr->content.value.a = a;
attr->content.value.b = b;
}
/*
* Use of this function is deprecated
* new code SHOULD use the TEE_CopyObjectAttributes1 function instead
* These functions will be removed at some future major revision of
* this specification
*/
void TEE_CopyObjectAttributes(TEE_ObjectHandle destObject,
TEE_ObjectHandle srcObject)
{
TEE_Result res;
TEE_ObjectInfo src_info;
res = utee_cryp_obj_get_info((unsigned long)srcObject, &src_info);
if (src_info.objectType == TEE_TYPE_CORRUPTED_OBJECT)
return;
res = TEE_CopyObjectAttributes1(destObject, srcObject);
if (res != TEE_SUCCESS)
TEE_Panic(res);
}
TEE_Result TEE_CopyObjectAttributes1(TEE_ObjectHandle destObject,
TEE_ObjectHandle srcObject)
{
TEE_Result res;
TEE_ObjectInfo dst_info;
TEE_ObjectInfo src_info;
res = utee_cryp_obj_get_info((unsigned long)destObject, &dst_info);
if (res != TEE_SUCCESS)
goto exit;
res = utee_cryp_obj_get_info((unsigned long)srcObject, &src_info);
if (res != TEE_SUCCESS)
goto exit;
if (!(src_info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED))
TEE_Panic(0);
if ((dst_info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT))
TEE_Panic(0);
if ((dst_info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED))
TEE_Panic(0);
res = utee_cryp_obj_copy((unsigned long)destObject,
(unsigned long)srcObject);
exit:
if (res != TEE_SUCCESS &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
TEE_Result TEE_GenerateKey(TEE_ObjectHandle object, uint32_t keySize,
const TEE_Attribute *params, uint32_t paramCount)
{
TEE_Result res;
struct utee_attribute ua[paramCount];
__utee_from_attr(ua, params, paramCount);
res = utee_cryp_obj_generate_key((unsigned long)object, keySize,
ua, paramCount);
if (res != TEE_SUCCESS && res != TEE_ERROR_BAD_PARAMETERS)
TEE_Panic(res);
return res;
}
/* Data and Key Storage API - Persistent Object Functions */
TEE_Result TEE_OpenPersistentObject(uint32_t storageID, const void *objectID,
uint32_t objectIDLen, uint32_t flags,
TEE_ObjectHandle *object)
{
TEE_Result res;
uint32_t obj;
if (!objectID) {
res = TEE_ERROR_ITEM_NOT_FOUND;
goto out;
}
if (objectIDLen > TEE_OBJECT_ID_MAX_LEN) {
res = TEE_ERROR_BAD_PARAMETERS;
goto out;
}
if (!object) {
res = TEE_ERROR_BAD_PARAMETERS;
goto out;
}
res = utee_storage_obj_open(storageID, objectID, objectIDLen, flags,
&obj);
if (res == TEE_SUCCESS)
*object = (TEE_ObjectHandle)(uintptr_t)obj;
out:
if (res != TEE_SUCCESS &&
res != TEE_ERROR_ITEM_NOT_FOUND &&
res != TEE_ERROR_ACCESS_CONFLICT &&
res != TEE_ERROR_OUT_OF_MEMORY &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
TEE_Result TEE_CreatePersistentObject(uint32_t storageID, const void *objectID,
uint32_t objectIDLen, uint32_t flags,
TEE_ObjectHandle attributes,
const void *initialData,
uint32_t initialDataLen,
TEE_ObjectHandle *object)
{
TEE_Result res;
uint32_t obj;
if (!objectID) {
res = TEE_ERROR_ITEM_NOT_FOUND;
goto err;
}
if (objectIDLen > TEE_OBJECT_ID_MAX_LEN) {
res = TEE_ERROR_BAD_PARAMETERS;
goto err;
}
res = utee_storage_obj_create(storageID, objectID, objectIDLen, flags,
(unsigned long)attributes, initialData,
initialDataLen, &obj);
if (res == TEE_SUCCESS) {
if (object)
*object = (TEE_ObjectHandle)(uintptr_t)obj;
else
res = utee_cryp_obj_close(obj);
if (res == TEE_SUCCESS)
goto out;
}
err:
if (object)
*object = TEE_HANDLE_NULL;
if (res == TEE_ERROR_ITEM_NOT_FOUND ||
res == TEE_ERROR_ACCESS_CONFLICT ||
res == TEE_ERROR_OUT_OF_MEMORY ||
res == TEE_ERROR_STORAGE_NO_SPACE ||
res == TEE_ERROR_CORRUPT_OBJECT ||
res == TEE_ERROR_STORAGE_NOT_AVAILABLE)
return res;
TEE_Panic(res);
out:
return TEE_SUCCESS;
}
/*
* Use of this function is deprecated
* new code SHOULD use the TEE_CloseAndDeletePersistentObject1 function instead
* These functions will be removed at some future major revision of
* this specification
*/
void TEE_CloseAndDeletePersistentObject(TEE_ObjectHandle object)
{
TEE_Result res;
if (object == TEE_HANDLE_NULL)
return;
res = TEE_CloseAndDeletePersistentObject1(object);
if (res != TEE_SUCCESS)
TEE_Panic(0);
}
TEE_Result TEE_CloseAndDeletePersistentObject1(TEE_ObjectHandle object)
{
TEE_Result res;
if (object == TEE_HANDLE_NULL)
return TEE_ERROR_STORAGE_NOT_AVAILABLE;
res = utee_storage_obj_del((unsigned long)object);
if (res != TEE_SUCCESS && res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
TEE_Result TEE_RenamePersistentObject(TEE_ObjectHandle object,
const void *newObjectID,
uint32_t newObjectIDLen)
{
TEE_Result res;
if (object == TEE_HANDLE_NULL) {
res = TEE_ERROR_ITEM_NOT_FOUND;
goto out;
}
if (!newObjectID) {
res = TEE_ERROR_BAD_PARAMETERS;
goto out;
}
if (newObjectIDLen > TEE_OBJECT_ID_MAX_LEN) {
res = TEE_ERROR_BAD_PARAMETERS;
goto out;
}
res = utee_storage_obj_rename((unsigned long)object, newObjectID,
newObjectIDLen);
out:
if (res != TEE_SUCCESS &&
res != TEE_ERROR_ACCESS_CONFLICT &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
TEE_Result TEE_AllocatePersistentObjectEnumerator(TEE_ObjectEnumHandle *
objectEnumerator)
{
TEE_Result res;
uint32_t oe;
if (!objectEnumerator)
return TEE_ERROR_BAD_PARAMETERS;
res = utee_storage_alloc_enum(&oe);
if (res != TEE_SUCCESS)
oe = TEE_HANDLE_NULL;
*objectEnumerator = (TEE_ObjectEnumHandle)(uintptr_t)oe;
if (res != TEE_SUCCESS &&
res != TEE_ERROR_ACCESS_CONFLICT)
TEE_Panic(res);
return res;
}
void TEE_FreePersistentObjectEnumerator(TEE_ObjectEnumHandle objectEnumerator)
{
TEE_Result res;
if (objectEnumerator == TEE_HANDLE_NULL)
return;
res = utee_storage_free_enum((unsigned long)objectEnumerator);
if (res != TEE_SUCCESS)
TEE_Panic(res);
}
void TEE_ResetPersistentObjectEnumerator(TEE_ObjectEnumHandle objectEnumerator)
{
TEE_Result res;
if (objectEnumerator == TEE_HANDLE_NULL)
return;
res = utee_storage_reset_enum((unsigned long)objectEnumerator);
if (res != TEE_SUCCESS)
TEE_Panic(res);
}
TEE_Result TEE_StartPersistentObjectEnumerator(TEE_ObjectEnumHandle
objectEnumerator,
uint32_t storageID)
{
TEE_Result res;
res = utee_storage_start_enum((unsigned long)objectEnumerator,
storageID);
if (res != TEE_SUCCESS &&
res != TEE_ERROR_ITEM_NOT_FOUND &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
TEE_Result TEE_GetNextPersistentObject(TEE_ObjectEnumHandle objectEnumerator,
TEE_ObjectInfo *objectInfo,
void *objectID, uint32_t *objectIDLen)
{
TEE_Result res;
uint64_t len;
TEE_ObjectInfo local_info;
TEE_ObjectInfo *pt_info;
if (!objectID) {
res = TEE_ERROR_BAD_PARAMETERS;
goto out;
}
if (!objectIDLen) {
res = TEE_ERROR_BAD_PARAMETERS;
goto out;
}
if (objectInfo)
pt_info = objectInfo;
else
pt_info = &local_info;
len = *objectIDLen;
res = utee_storage_next_enum((unsigned long)objectEnumerator,
pt_info, objectID, &len);
*objectIDLen = len;
out:
if (res != TEE_SUCCESS &&
res != TEE_ERROR_ITEM_NOT_FOUND &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
/* Data and Key Storage API - Data Stream Access Functions */
TEE_Result TEE_ReadObjectData(TEE_ObjectHandle object, void *buffer,
uint32_t size, uint32_t *count)
{
TEE_Result res;
uint64_t cnt64;
if (object == TEE_HANDLE_NULL) {
res = TEE_ERROR_BAD_PARAMETERS;
goto out;
}
cnt64 = *count;
res = utee_storage_obj_read((unsigned long)object, buffer, size,
&cnt64);
*count = cnt64;
out:
if (res != TEE_SUCCESS &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
TEE_Result TEE_WriteObjectData(TEE_ObjectHandle object, const void *buffer,
uint32_t size)
{
TEE_Result res;
if (object == TEE_HANDLE_NULL) {
res = TEE_ERROR_BAD_PARAMETERS;
goto out;
}
if (size > TEE_DATA_MAX_POSITION) {
res = TEE_ERROR_OVERFLOW;
goto out;
}
res = utee_storage_obj_write((unsigned long)object, buffer, size);
out:
if (res != TEE_SUCCESS &&
res != TEE_ERROR_STORAGE_NO_SPACE &&
res != TEE_ERROR_OVERFLOW &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
TEE_Result TEE_TruncateObjectData(TEE_ObjectHandle object, uint32_t size)
{
TEE_Result res;
if (object == TEE_HANDLE_NULL) {
res = TEE_ERROR_BAD_PARAMETERS;
goto out;
}
res = utee_storage_obj_trunc((unsigned long)object, size);
out:
if (res != TEE_SUCCESS &&
res != TEE_ERROR_STORAGE_NO_SPACE &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}
TEE_Result TEE_SeekObjectData(TEE_ObjectHandle object, int32_t offset,
TEE_Whence whence)
{
TEE_Result res;
TEE_ObjectInfo info;
if (object == TEE_HANDLE_NULL) {
res = TEE_ERROR_BAD_PARAMETERS;
goto out;
}
res = utee_cryp_obj_get_info((unsigned long)object, &info);
if (res != TEE_SUCCESS)
goto out;
switch (whence) {
case TEE_DATA_SEEK_SET:
if (offset > 0 && (uint32_t)offset > TEE_DATA_MAX_POSITION) {
res = TEE_ERROR_OVERFLOW;
goto out;
}
break;
case TEE_DATA_SEEK_CUR:
if (offset > 0 &&
((uint32_t)offset + info.dataPosition >
TEE_DATA_MAX_POSITION ||
(uint32_t)offset + info.dataPosition <
info.dataPosition)) {
res = TEE_ERROR_OVERFLOW;
goto out;
}
break;
case TEE_DATA_SEEK_END:
if (offset > 0 &&
((uint32_t)offset + info.dataSize > TEE_DATA_MAX_POSITION ||
(uint32_t)offset + info.dataSize < info.dataSize)) {
res = TEE_ERROR_OVERFLOW;
goto out;
}
break;
default:
res = TEE_ERROR_ITEM_NOT_FOUND;
goto out;
}
res = utee_storage_obj_seek((unsigned long)object, offset, whence);
out:
if (res != TEE_SUCCESS &&
res != TEE_ERROR_OVERFLOW &&
res != TEE_ERROR_CORRUPT_OBJECT &&
res != TEE_ERROR_STORAGE_NOT_AVAILABLE)
TEE_Panic(res);
return res;
}