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/********************************************************************************/
/* */
/* Command Code Attributes */
/* Written by Ken Goldman */
/* IBM Thomas J. Watson Research Center */
/* */
/* (c) Copyright IBM Corporation 2015 - 2019. */
/* */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or without */
/* modification, are permitted provided that the following conditions are */
/* met: */
/* */
/* Redistributions of source code must retain the above copyright notice, */
/* this list of conditions and the following disclaimer. */
/* */
/* 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. */
/* */
/* Neither the names of the IBM Corporation nor the names of its */
/* contributors may be used to endorse or promote products derived from */
/* this software without specific prior written permission. */
/* */
/* 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. */
/********************************************************************************/
/* NOTE: This is a replica of CommandAttributeData.c, but endian independent. It must be kept in
sync with the TPM reference implementation.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "tssccattributes.h"
/* CommandCodeToCommandIndex() returns the index into the s_ccAttr table for the commandCode.
Returns UNIMPLEMENTED_COMMAND_INDEX if the command is unimplemented.
*/
/* NOTE: Marked as const function in header declaration */
COMMAND_INDEX CommandCodeToCommandIndex(TPM_CC commandCode)
{
COMMAND_INDEX i;
/* s_ccAttr has terminating 0x0000 command code and V */
for (i = 0 ; (s_ccAttr[i].commandCode != 0) || (s_ccAttr[i].V != 0) ; i++) {
if (s_ccAttr[i].commandCode == commandCode) {
return i;
}
}
return UNIMPLEMENTED_COMMAND_INDEX;
}
/* getCommandHandleCount() returns the number of command parameter handles */
/* NOTE: Marked as const function in header declaration */
uint32_t getCommandHandleCount(COMMAND_INDEX index)
{
return s_ccAttr[index].cHandles;
}
/* getresponseHandleCount() returns the number of command parameter handles */
/* NOTE: Marked as const function in header declaration */
uint32_t getresponseHandleCount(COMMAND_INDEX index)
{
return s_ccAttr[index].rHandle;
}
/* getDecryptSize() returns 0 if the command does not support command parameter encryption, 2 if the
command does support command parameter encryption and the size is a uint16_t. There is an unused
provision for a 4 for a uint32_t size. */
/* NOTE: Marked as const function in header declaration */
int getDecryptSize(COMMAND_INDEX commandIndex)
{
COMMAND_ATTRIBUTES ca = s_commandAttributes[commandIndex];
if(ca & DECRYPT_2)
return 2;
if(ca & DECRYPT_4)
return 4;
return 0;
}
/* getEecryptSize() returns 0 if the response does not support response parameter encryption, 2 if
the command does support response parameter encryption and the size is a uint16_t. There is an
unused provision for a 4 for a uint32_t size. */
/* NOTE: Marked as const function in header declaration */
int getEncryptSize(COMMAND_INDEX commandIndex)
{
COMMAND_ATTRIBUTES ca = s_commandAttributes[commandIndex];
if(ca & ENCRYPT_2)
return 2;
if(ca & ENCRYPT_4)
return 4;
return 0;
}
/* getCommandAuthRole() returns the authorization role for the handle: user, admin, or dup.
*/
/* NOTE: Marked as const function in header declaration */
AUTH_ROLE getCommandAuthRole(
COMMAND_INDEX commandIndex, // IN: command index
size_t handleIndex // IN: handle index (zero based)
)
{
if(0 == handleIndex )
{
// Any auth role set?
COMMAND_ATTRIBUTES properties = s_commandAttributes[commandIndex];
if(properties & HANDLE_1_USER)
return AUTH_USER;
if(properties & HANDLE_1_ADMIN)
return AUTH_ADMIN;
if(properties & HANDLE_1_DUP)
return AUTH_DUP;
}
else if (1 == handleIndex)
{
if(s_commandAttributes[commandIndex] & HANDLE_2_USER)
return AUTH_USER;
}
return AUTH_NONE;
}
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