| //**********************************************************************; |
| // Copyright (c) 2015, Intel Corporation |
| // 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 "sapi/tpm20.h" |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include "sysapi_util.h" |
| |
| // Get the TPM 2.0 commands supported by the TPM. |
| TSS2_RC GetCommands( TSS2_SYS_CONTEXT *resMgrSysContext, TPML_CCA **supportedCommands ) |
| { |
| UINT32 numCommands; |
| TPMI_YES_NO moreData; |
| TPMS_CAPABILITY_DATA capabilityData; |
| TPMA_CC *commandPtr; |
| TSS2_RC rval = TSS2_RC_SUCCESS; |
| UINT32 i; |
| |
| // First get the number of commands |
| rval = Tss2_Sys_GetCapability( resMgrSysContext, 0, |
| TPM_CAP_TPM_PROPERTIES, TPM_PT_TOTAL_COMMANDS, |
| 1, 0, &capabilityData, 0 ); |
| if( rval == TPM_RC_SUCCESS && |
| capabilityData.capability == TPM_CAP_TPM_PROPERTIES && |
| capabilityData.data.tpmProperties.count == 1 && |
| capabilityData.data.tpmProperties.tpmProperty[0].property == TPM_PT_TOTAL_COMMANDS ) |
| { |
| numCommands = capabilityData.data.tpmProperties.tpmProperty[0].value; |
| } |
| else |
| { |
| goto returnFromGetCommands; |
| } |
| |
| // Allocate memory for them |
| *supportedCommands = (TPML_CCA *)malloc( numCommands * sizeof( TPMA_CC ) + sizeof( UINT32 ) ); |
| if( !*supportedCommands ) |
| { |
| rval = TSS2_BASE_RC_INSUFFICIENT_BUFFER + TSS2_RESMGR_ERROR_LEVEL; |
| goto returnFromGetCommands; |
| } |
| |
| for( commandPtr = &( ( *supportedCommands )->commandAttributes[0] ), ( *supportedCommands )->count = 0; |
| ( *supportedCommands )->count < numCommands; |
| ( *supportedCommands )->count += capabilityData.data.command.count, |
| commandPtr += capabilityData.data.command.count ) |
| { |
| // Now get the command structures for all of them. |
| rval = Tss2_Sys_GetCapability( resMgrSysContext, 0, |
| TPM_CAP_COMMANDS, TPM_CC_FIRST, |
| numCommands, &moreData, &capabilityData, 0 ); |
| |
| if( rval == TPM_RC_SUCCESS && |
| capabilityData.capability == TPM_CAP_COMMANDS && |
| capabilityData.data.command.count >= 1 ) |
| { |
| for( i = 0; i < capabilityData.data.command.count; i ++ ) |
| { |
| commandPtr[ ( *supportedCommands )->count + i ].val = |
| capabilityData.data.command.commandAttributes[i].val; |
| } |
| } |
| else |
| { |
| break; |
| } |
| } |
| |
| returnFromGetCommands: |
| return rval; |
| } |
| |
| // |
| // Searches in a list for command attributes bit field for a command code. |
| // Assumes that the supportedCommands structure has been populated by |
| // calling GetCommands beforehand. |
| // |
| // Returns: |
| // 1, if found. In this case, cmdAttributes points to the attributes bit field. |
| // 0, if not found. This means that the TPM doesn't support this command. |
| // |
| UINT8 GetCommandAttributes( TPM_CC commandCode, TPML_CCA *supportedCommands, TPMA_CC *cmdAttributes ) |
| { |
| UINT32 i; |
| UINT8 rval = 0; |
| |
| for( i = 0; i < supportedCommands->count; i++ ) |
| { |
| if( (TPM_CC)( supportedCommands->commandAttributes[i].commandIndex ) == commandCode ) |
| { |
| rval = 1; |
| *cmdAttributes = supportedCommands->commandAttributes[i]; |
| break; |
| } |
| } |
| |
| return rval; |
| } |
| |