TSS2_RC PlatformCommand(
TSS2_TCTI_CONTEXT *tctiContext, /* in */
char cmd )
{
int iResult = 0; // used to return function results
char sendbuf[] = { 0x0,0x0,0x0,0x0 };
char recvbuf[] = { 0x0, 0x0, 0x0, 0x0 };
TSS2_RC rval = TSS2_RC_SUCCESS;
if( simulator )
{
sendbuf[3] = cmd;
OpenOutFile( &outFp );
// Send the command
iResult = send( TCTI_CONTEXT_INTEL->otherSock, sendbuf, 4, 0 );
if (iResult == SOCKET_ERROR) {
(*printfFunction)(NO_PREFIX, "send failed with error: %d\n", WSAGetLastError() );
closesocket(TCTI_CONTEXT_INTEL->otherSock);
WSACleanup();
rval = TSS2_TCTI_RC_IO_ERROR;
}
else
{
#ifdef DEBUG_SOCKETS
(*printfFunction)( rmDebugPrefix, "Send Bytes to socket #0x%x: \n", TCTI_CONTEXT_INTEL->otherSock );
DebugPrintBuffer( (UINT8 *)sendbuf, 4 );
#endif
// Read result
iResult = recv( TCTI_CONTEXT_INTEL->otherSock, recvbuf, 4, 0);
if (iResult == SOCKET_ERROR) {
(*printfFunction)(NO_PREFIX, "In PlatformCommand, recv failed (socket: 0x%x) with error: %d\n",
TCTI_CONTEXT_INTEL->otherSock, WSAGetLastError() );
closesocket(TCTI_CONTEXT_INTEL->otherSock);
WSACleanup();
rval = TSS2_TCTI_RC_IO_ERROR;
}
else if( recvbuf[0] != 0 || recvbuf[1] != 0 || recvbuf[2] != 0 || recvbuf[3] != 0 )
{
(*printfFunction)(NO_PREFIX, "PlatformCommand failed with error: %d\n", recvbuf[3] );
closesocket(TCTI_CONTEXT_INTEL->otherSock);
WSACleanup();
rval = TSS2_TCTI_RC_IO_ERROR;
}
else
{
#ifdef DEBUG_SOCKETS
(*printfFunction)(NO_PREFIX, "Receive bytes from socket #0x%x: \n", TCTI_CONTEXT_INTEL->otherSock );
DebugPrintBuffer( (UINT8 *)recvbuf, 4 );
#endif
}
}
CloseOutFile( &outFp );
}
return rval;
}
TSS2_RC TeardownSocketsTcti (
TSS2_TCTI_CONTEXT *tctiContext, // OUT
const char *config, // IN
const char *interfaceName
)
{
OpenOutFile( &outFp );
(*printfFunction)(NO_PREFIX, "Tearing down %s Interface\n", interfaceName );
CloseOutFile( &outFp );
((TSS2_TCTI_CONTEXT_INTEL *)tctiContext)->finalize( tctiContext );
return TSS2_RC_SUCCESS;
}
TSS2_RC InitSocketsTcti (
TSS2_TCTI_CONTEXT *tctiContext, // OUT
size_t *contextSize, // IN/OUT
const char *config, // IN
const uint64_t magic,
const uint32_t version,
const char *interfaceName,
const uint8_t serverSockets
)
{
TSS2_RC rval = TSS2_RC_SUCCESS;
char hostName[200];
int port;
SOCKET otherSock;
SOCKET tpmSock;
if( tctiContext == NULL )
{
*contextSize = sizeof( TSS2_TCTI_CONTEXT_INTEL );
return TSS2_RC_SUCCESS;
}
else
{
OpenOutFile( &outFp );
(*printfFunction)(NO_PREFIX, "Initializing %s Interface\n", interfaceName );
// Init TCTI context.
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->magic = magic;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->version = version;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->transmit = SocketSendTpmCommand;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->receive = SocketReceiveTpmResponse;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->finalize = SocketFinalize;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->cancel = SocketCancel;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->getPollHandles = 0;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->setLocality = SocketSetLocality;
((TSS2_TCTI_CONTEXT_INTEL *)tctiContext)->status.locality = 3;
((TSS2_TCTI_CONTEXT_INTEL *)tctiContext)->status.commandSent = 0;
((TSS2_TCTI_CONTEXT_INTEL *)tctiContext)->status.rmDebugPrefix = 0;
((TSS2_TCTI_CONTEXT_INTEL *)tctiContext)->currentTctiContext = 0;
// Get hostname and port.
if( ( strlen( config ) + 2 ) <= ( HOSTNAME_LENGTH ) )
{
if( 1 == sscanf( config, "%199s", hostName ) )
{
if( strlen( config) - ( strlen( hostName ) + 2 ) <= PORT_LENGTH )
{
if( 1 != sscanf( &config[strlen( hostName )], "%d", &port ) )
{
return( TSS2_TCTI_RC_BAD_VALUE );
}
}
else
{
return( TSS2_TCTI_RC_BAD_VALUE );
}
}
else
{
return( TSS2_TCTI_RC_BAD_VALUE );
}
}
else
{
return( TSS2_TCTI_RC_INSUFFICIENT_BUFFER );
}
rval = (TSS2_RC) InitSockets( &hostName[0], port, serverSockets, &otherSock, &tpmSock );
if( rval == TSS2_RC_SUCCESS )
{
((TSS2_TCTI_CONTEXT_INTEL *)tctiContext)->otherSock = otherSock;
((TSS2_TCTI_CONTEXT_INTEL *)tctiContext)->tpmSock = tpmSock;
}
else
{
CloseSockets( otherSock, tpmSock);
}
CloseOutFile( &outFp );
}
return rval;
}
TSS2_RC InitLocalTpmTcti (
TSS2_TCTI_CONTEXT *tctiContext, // OUT
size_t *contextSize, // IN/OUT
const char *config, // IN
const uint64_t magic,
const uint32_t version,
const char *interfaceName,
const uint8_t serverSockets // Unused for local TPM.
)
{
TSS2_RC rval = TSS2_RC_SUCCESS;
char fileName[200];
if( tctiContext == NULL )
{
*contextSize = sizeof( TSS2_TCTI_CONTEXT_INTEL );
return TSS2_RC_SUCCESS;
}
else
{
OpenOutFile( &outFp );
(*tpmLocalTpmPrintf)(NO_PREFIX, "Initializing %s Interface\n", interfaceName );
// Init TCTI context.
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->magic = magic;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->version = version;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->transmit = LocalTpmSendTpmCommand;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->receive = LocalTpmReceiveTpmResponse;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->finalize = LocalTpmFinalize;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->cancel = LocalTpmCancel;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->getPollHandles = 0;
((TSS2_TCTI_CONTEXT_COMMON_V1 *)tctiContext)->setLocality = LocalTpmSetLocality;
((TSS2_TCTI_CONTEXT_INTEL *)tctiContext)->status.locality = 3;
((TSS2_TCTI_CONTEXT_INTEL *)tctiContext)->status.commandSent = 0;
((TSS2_TCTI_CONTEXT_INTEL *)tctiContext)->status.rmDebugPrefix = 0;
((TSS2_TCTI_CONTEXT_INTEL *)tctiContext)->currentTctiContext = 0;
// Get hostname and port.
if( ( strlen( config ) + 2 ) <= ( HOSTNAME_LENGTH ) )
{
if( 1 != sscanf( config, "%199s", fileName ) )
{
return( TSS2_TCTI_RC_BAD_VALUE );
}
}
else
{
return( TSS2_TCTI_RC_INSUFFICIENT_BUFFER );
}
( ( (TSS2_TCTI_CONTEXT_INTEL *)tctiContext )->devFile ) = open( fileName, O_RDWR );
if( ( (TSS2_TCTI_CONTEXT_INTEL *)tctiContext )->devFile < 0 )
{
return( TSS2_TCTI_RC_IO_ERROR );
}
CloseOutFile( &outFp );
}
return rval;
}
//
// This function is a helper function used to calculate cpHash and rpHash.
//
// NOTE: for calculating cpHash, set responseCode to TPM_RC_NO_RESPONSE; this
// tells the function to leave it out of the calculation.
//
TPM_RC TpmCalcPHash( TSS2_SYS_CONTEXT *sysContext, TPM_HANDLE handle1, TPM_HANDLE handle2,
TPMI_ALG_HASH authHash, TPM_RC responseCode, TPM2B_DIGEST *pHash )
{
TPM_RC rval = TPM_RC_SUCCESS;
UINT32 i;
TPM2B_NAME name1;
TPM2B_NAME name2;
TPM2B_MAX_BUFFER hashInput; // Byte stream to be hashed to create pHash
UINT8 *hashInputPtr;
size_t parametersSize;
const uint8_t *startParams;
UINT8 cmdCode[4] = {0,0,0,0};
UINT8 *cmdCodePtr = &cmdCode[0];
name1.b.size = name2.b.size = 0;
// Calculate pHash
//
// Only get names for commands
if( responseCode == TPM_RC_NO_RESPONSE )
{
// Get names for the handles
rval = TpmHandleToName( handle1, &name1 );
if( rval != TPM_RC_SUCCESS )
return rval;
}
#ifdef DEBUG
OpenOutFile( &outFp );
TpmClientPrintf( 0, "\n\nNAME1 = \n" );
PrintSizedBuffer( &(name1.b) );
CloseOutFile( &outFp );
#endif
// Only get names for commands
if( responseCode == TPM_RC_NO_RESPONSE )
{
rval = Tss2_Sys_GetCpBuffer( sysContext, ¶metersSize, &startParams);
if( rval != TPM_RC_SUCCESS )
return rval;
rval = TpmHandleToName( handle2, &name2 );
if( rval != TPM_RC_SUCCESS )
return rval;
}
else
{
rval = Tss2_Sys_GetRpBuffer( sysContext, ¶metersSize, &startParams);
if( rval != TPM_RC_SUCCESS )
return rval;
}
#ifdef DEBUG
OpenOutFile( &outFp );
TpmClientPrintf( 0, "\n\nNAME2 = \n" );
PrintSizedBuffer( &(name2.b) );
CloseOutFile( &outFp );
#endif
// Create pHash input byte stream: first add response code, if any.
hashInput.b.size = 0;
if( responseCode != TPM_RC_NO_RESPONSE )
{
hashInputPtr = &( hashInput.t.buffer[hashInput.b.size] );
*(UINT32 *)hashInputPtr = CHANGE_ENDIAN_DWORD( responseCode );
hashInput.b.size += 4;
hashInputPtr += 4;
}
// Create pHash input byte stream: now add command code.
rval = Tss2_Sys_GetCommandCode( sysContext, &cmdCode );
if( rval != TPM_RC_SUCCESS )
return rval;
hashInputPtr = &( hashInput.t.buffer[hashInput.b.size] );
*(UINT32 *)hashInputPtr = CHANGE_ENDIAN_DWORD( *(UINT32 *)cmdCodePtr );
hashInput.t.size += 4;
// Create pHash input byte stream: now add in names for the handles.
rval = ConcatSizedByteBuffer( &hashInput, &( name1.b ) );
if( rval != TPM_RC_SUCCESS )
return rval;
rval = ConcatSizedByteBuffer( &hashInput, &( name2.b ) );
if( rval != TPM_RC_SUCCESS )
return rval;
if( ( hashInput.t.size + parametersSize ) <= sizeof( hashInput.t.buffer ) )
{
// Create pHash input byte stream: now add in parameters byte stream
for( i = 0; i < parametersSize; i++ )
hashInput.t.buffer[hashInput.t.size + i ] = startParams[i];
hashInput.t.size += (UINT16)parametersSize;
}
else
{
return( APPLICATION_ERROR( TSS2_BASE_RC_INSUFFICIENT_BUFFER ) );
}
#ifdef DEBUG
OpenOutFile( &outFp );
TpmClientPrintf( 0, "\n\nPHASH input bytes= \n" );
PrintSizedBuffer( &(hashInput.b) );
CloseOutFile( &outFp );
#endif
// Now hash the whole mess.
if( hashInput.t.size > sizeof( hashInput.t.buffer ) )
{
rval = APPLICATION_ERROR( TSS2_BASE_RC_INSUFFICIENT_BUFFER );
}
else
{
rval = TpmHash( authHash, hashInput.t.size, &( hashInput.t.buffer[0] ), pHash );
if( rval != TPM_RC_SUCCESS )
return rval;
#ifdef DEBUG
OpenOutFile( &outFp );
TpmClientPrintf( 0, "\n\nPHASH = " );
PrintSizedBuffer( &(pHash->b) );
CloseOutFile( &outFp );
#endif
}
return rval;
}
//
// This function calculates the session HMAC and updates session state.
//
UINT32 TpmComputeSessionHmac(
TSS2_SYS_CONTEXT *sysContext,
TPMS_AUTH_COMMAND *pSessionDataIn, // Pointer to session input struct
TPM_HANDLE entityHandle, // Used to determine if we're accessing a different
// resource than the bound resoure.
TPM_RC responseCode, // Response code for the command, 0xffff for "none" is
// used to indicate that no response code is present
// (used for calculating command HMACs vs response HMACs).
TPM_HANDLE handle1, // First handle == 0xff000000 indicates no handle
TPM_HANDLE handle2, // Second handle == 0xff000000 indicates no handle
TPMA_SESSION sessionAttributes, // Current session attributes
TPM2B_DIGEST *result, // Where the result hash is saved.
TPM_RC sessionCmdRval
)
{
TPM2B_MAX_BUFFER hmacKey;
TPM2B *bufferList[7];
TPM2B_DIGEST pHash;
SESSION *pSession = 0;
TPM2B_AUTH authValue;
TPM2B sessionAttributesByteBuffer;
UINT16 i;
TPM_RC rval;
UINT8 nvNameChanged = 0;
ENTITY *nvEntity;
UINT8 commandCode[4] = { 0, 0, 0, 0 };
UINT32 *cmdCodePtr;
UINT32 cmdCode;
hmacKey.b.size = 0;
rval = GetSessionStruct( pSessionDataIn->sessionHandle, &pSession );
if( rval != TPM_RC_SUCCESS )
{
return rval;
}
pHash.t.size = sizeof( TPM2B_DIGEST ) - 2;
rval = ( *CalcPHash )( sysContext, handle1, handle2, pSession->authHash,
responseCode, &pHash );
if( rval != TPM_RC_SUCCESS )
return rval;
// Use entityHandle to get authValue, if any.
if( ( pSession->bind == TPM_RH_NULL ) ||
( ( pSession->bind != TPM_RH_NULL ) && ( pSession->bind == entityHandle ) ) )
{
rval = GetEntityAuth( entityHandle, &authValue );
if( rval != TPM_RC_SUCCESS )
authValue.t.size = 0;
}
else
{
authValue.t.size = 0;
}
rval = Tss2_Sys_GetCommandCode( sysContext, &commandCode );
if( rval != TPM_RC_SUCCESS )
return rval;
if( ( entityHandle >> HR_SHIFT ) == TPM_HT_NV_INDEX )
{
// If NV index, get status wrt to name change. If name has changed,
// we have to treat it as if its not the bound entity, even if it was
// the bound entity.
nvNameChanged = pSession->nvNameChanged;
}
rval = ConcatSizedByteBuffer( (TPM2B_MAX_BUFFER *)&hmacKey, &( pSession->sessionKey.b ) );
if( ( pSession->bind == TPM_RH_NULL ) || ( pSession->bind != entityHandle )
|| nvNameChanged )
{
rval = ConcatSizedByteBuffer( (TPM2B_MAX_BUFFER *)&hmacKey, &( authValue.b ) );
}
#ifdef DEBUG
OpenOutFile( &outFp );
TpmClientPrintf( 0, "\n\nhmacKey = " );
PrintSizedBuffer( &(hmacKey.b) );
CloseOutFile( &outFp );
#endif
// Create buffer list
i = 0;
bufferList[i++] = &pHash.b;
bufferList[i++] = &( pSession->nonceNewer.b );
bufferList[i++] = &( pSession->nonceOlder.b );
bufferList[i++] = &( pSession->nonceTpmDecrypt.b );
bufferList[i++] = &( pSession->nonceTpmEncrypt.b );
sessionAttributesByteBuffer.size = 1;
sessionAttributesByteBuffer.buffer[0] = *(UINT8 *)&sessionAttributes;
bufferList[i++] = &( sessionAttributesByteBuffer );
bufferList[i++] = 0;
cmdCodePtr = (UINT32 *)&commandCode[0];
cmdCode = *cmdCodePtr;
#ifdef DEBUG
OpenOutFile( &outFp );
for( i = 0; bufferList[i] != 0; i++ )
{
TpmClientPrintf( 0, "\n\nbufferlist[%d]:\n", i );
PrintSizedBuffer( bufferList[i] );
}
CloseOutFile( &outFp );
#endif
rval = (*HmacFunctionPtr)( pSession->authHash, &hmacKey.b, &( bufferList[0] ), result );
if( rval != TPM_RC_SUCCESS )
return rval;
if( ( responseCode != TPM_RC_NO_RESPONSE ) &&
( cmdCode == TPM_CC_NV_Write ||
cmdCode == TPM_CC_NV_Increment ||
cmdCode == TPM_CC_NV_SetBits )
)
{
rval = GetEntity( entityHandle, &nvEntity );
if( rval != TPM_RC_SUCCESS )
{
return rval;
}
else
{
// Only change session's nvNameChanged parameter when
// the NV index's name changes due to a write.
if( nvEntity->nvNameChanged == 0 )
{
pSession->nvNameChanged = 1;
nvEntity->nvNameChanged = 1;
}
}
}
return rval;
}
