//------------------------------------------------------------------------------
void MobiCoreDriverDaemon::processOpenTrustlet(Connection *connection)
{
MC_DRV_CMD_OPEN_TRUSTLET_struct cmdOpenTrustlet;
RECV_PAYLOAD_FROM_CLIENT(connection, &cmdOpenTrustlet);
// Device required
MobiCoreDevice *device = (MobiCoreDevice *) (connection->connectionData);
CHECK_DEVICE(device, connection);
uint32_t total_len, rlen, len = cmdOpenTrustlet.trustlet_len;
uint8_t *payload = (uint8_t *)malloc(len);
uint8_t *p = payload;
if (payload == NULL) {
LOG_E("failed to allocate payload buffer");
writeResult(connection, MC_DRV_ERR_DAEMON_SOCKET);
return;
}
total_len = 0;
while (total_len < len) {
rlen = connection->readData(p, len - total_len);
if ((int32_t)rlen < 0) {
LOG_E("reading from Client failed");
/* it is questionable, if writing to broken socket has any effect here. */
writeResult(connection, MC_DRV_ERR_DAEMON_SOCKET);
free(payload);
return;
}
total_len += rlen;
p += rlen;
}
// Get service blob from registry
regObject_t *regObj = mcRegistryMemGetServiceBlob(cmdOpenTrustlet.spid, (uint8_t *)payload, len);
// Free the payload object no matter what
free(payload);
if (regObj == NULL) {
writeResult(connection, MC_DRV_ERR_TRUSTLET_NOT_FOUND);
return;
}
if (regObj->len == 0) {
free(regObj);
writeResult(connection, MC_DRV_ERR_TRUSTLET_NOT_FOUND);
return;
}
LOG_I(" Sharing Service loaded at %p with Secure World", (addr_t)(regObj->value));
CWsm_ptr pWsm = device->registerWsmL2((addr_t)(regObj->value), regObj->len, 0);
if (pWsm == NULL) {
free(regObj);
LOG_E("allocating WSM for Trustlet failed");
writeResult(connection, MC_DRV_ERR_DAEMON_KMOD_ERROR);
return;
}
// Initialize information data of open session command
loadDataOpenSession_t loadDataOpenSession;
loadDataOpenSession.baseAddr = pWsm->physAddr;
loadDataOpenSession.offs = ((uintptr_t) regObj->value) & 0xFFF;
loadDataOpenSession.len = regObj->len;
loadDataOpenSession.tlHeader = (mclfHeader_ptr) (regObj->value + regObj->tlStartOffset);
mcDrvRspOpenSession_t rspOpenSession;
mcResult_t ret = device->openSession(
connection,
&loadDataOpenSession,
cmdOpenTrustlet.handle,
cmdOpenTrustlet.len,
cmdOpenTrustlet.tci,
&rspOpenSession.payload);
// Unregister physical memory from kernel module.
LOG_I(" Service buffer was copied to Secure world and processed. Stop sharing of buffer.");
// This will also destroy the WSM object.
if (!device->unregisterWsmL2(pWsm)) {
free(regObj);
// TODO-2012-07-02-haenellu: Can this ever happen? And if so, we should assert(), also TL might still be running.
writeResult(connection, MC_DRV_ERR_DAEMON_KMOD_ERROR);
return;
}
// Free memory occupied by Trustlet data
free(regObj);
if (ret != MC_DRV_OK) {
LOG_E("Service could not be loaded.");
writeResult(connection, ret);
} else {
rspOpenSession.header.responseId = ret;
connection->writeData(
&rspOpenSession,
sizeof(rspOpenSession));
}
}
//------------------------------------------------------------------------------
void MobiCoreDriverDaemon::processOpenSession(Connection *connection, bool isGpUuid)
{
MC_DRV_CMD_OPEN_SESSION_struct cmdOpenSession;
RECV_PAYLOAD_FROM_CLIENT(connection, &cmdOpenSession);
// Device required
MobiCoreDevice *device = (MobiCoreDevice *) (connection->connectionData);
CHECK_DEVICE(device, connection);
// Get service blob from registry
regObject_t *regObj = mcRegistryGetServiceBlob(&cmdOpenSession.uuid, isGpUuid);
if (NULL == regObj) {
writeResult(connection, MC_DRV_ERR_TRUSTLET_NOT_FOUND);
return;
}
if (regObj->len == 0) {
free(regObj);
writeResult(connection, MC_DRV_ERR_TRUSTLET_NOT_FOUND);
return;
}
LOG_I(" Sharing Service loaded at %p with Secure World", (addr_t)(regObj->value));
CWsm_ptr pWsm = device->registerWsmL2((addr_t)(regObj->value), regObj->len, 0);
if (pWsm == NULL) {
// Free memory occupied by Trustlet data
free(regObj);
LOG_E("allocating WSM for Trustlet failed");
writeResult(connection, MC_DRV_ERR_DAEMON_KMOD_ERROR);
return;
}
// Initialize information data of open session command
loadDataOpenSession_t loadDataOpenSession;
loadDataOpenSession.baseAddr = pWsm->physAddr;
loadDataOpenSession.offs = ((uintptr_t) regObj->value) & 0xFFF;
loadDataOpenSession.len = regObj->len;
loadDataOpenSession.tlHeader = (mclfHeader_ptr) (regObj->value + regObj->tlStartOffset);
mcDrvRspOpenSession_t rspOpenSession;
mcResult_t ret = device->openSession(
connection,
&loadDataOpenSession,
cmdOpenSession.handle,
cmdOpenSession.len,
cmdOpenSession.tci,
&rspOpenSession.payload);
// Unregister physical memory from kernel module.
LOG_I(" Service buffer was copied to Secure world and processed. Stop sharing of buffer.");
// This will also destroy the WSM object.
if (!device->unregisterWsmL2(pWsm)) {
// TODO-2012-07-02-haenellu: Can this ever happen? And if so, we should assert(), also TL might still be running.
free(regObj);
writeResult(connection, MC_DRV_ERR_DAEMON_KMOD_ERROR);
return;
}
// Free memory occupied by Trustlet data
free(regObj);
if (ret != MC_DRV_OK) {
LOG_E("Service could not be loaded.");
writeResult(connection, ret);
} else {
rspOpenSession.header.responseId = ret;
connection->writeData(
&rspOpenSession,
sizeof(rspOpenSession));
}
}
//------------------------------------------------------------------------------
mcResult_t MobiCoreDriverDaemon::processLoadCheck(mcSpid_t spid, void *blob, uint32_t size)
{
// Device required
MobiCoreDevice *device = getDevice(MC_DEVICE_ID_DEFAULT);
if (device == NULL) {
LOG_E(" No device found");
return MC_DRV_ERR_DAEMON_DEVICE_NOT_OPEN;
}
// Get service blob from registry
regObject_t *regObj = mcRegistryMemGetServiceBlob(spid, blob, size);
if (NULL == regObj) {
LOG_E(" mcRegistryMemGetServiceBlob failed");
return MC_DRV_ERR_TRUSTLET_NOT_FOUND;
}
if (regObj->len == 0) {
free(regObj);
LOG_E("mcRegistryMemGetServiceBlob returned registry object with length equal to zero");
return MC_DRV_ERR_TRUSTLET_NOT_FOUND;
}
LOG_I(" Sharing Service loaded at %p with Secure World", (addr_t)(regObj->value));
CWsm_ptr pWsm = device->registerWsmL2((addr_t)(regObj->value), regObj->len, 0);
if (pWsm == NULL) {
// Free memory occupied by Trustlet data
free(regObj);
LOG_E("allocating WSM for Trustlet failed");
return MC_DRV_ERR_DAEMON_KMOD_ERROR;
}
// Initialize information data of open session command
loadDataOpenSession_t loadDataOpenSession;
loadDataOpenSession.baseAddr = pWsm->physAddr;
loadDataOpenSession.offs = ((uintptr_t) regObj->value) & 0xFFF;
loadDataOpenSession.len = regObj->len;
loadDataOpenSession.tlHeader = (mclfHeader_ptr) (regObj->value + regObj->tlStartOffset);
mcDrvRspOpenSession_t rspOpenSession;
mcResult_t ret = device->checkLoad(
&loadDataOpenSession,
&rspOpenSession.payload);
// Unregister physical memory from kernel module.
LOG_I(" Service buffer was copied to Secure world and processed. Stop sharing of buffer.");
// This will also destroy the WSM object.
if (!device->unregisterWsmL2(pWsm)) {
// Free memory occupied by Trustlet data
free(regObj);
LOG_E("deallocating WSM for Trustlet failed");
return MC_DRV_ERR_DAEMON_KMOD_ERROR;
}
// Free memory occupied by Trustlet data
free(regObj);
if (ret != MC_DRV_OK) {
LOG_E("TA could not be loaded.");
return ret;
} else {
return MC_DRV_OK;
}
}
//------------------------------------------------------------------------------
void MobiCoreDriverDaemon::processOpenSession(
Connection *connection
) {
do
{
// Read entire command data
mcDrvCmdOpenSessionPayload_t cmdOpenSessionPayload;
uint32_t rlen = connection->readData(
&cmdOpenSessionPayload,
sizeof(cmdOpenSessionPayload));
if (rlen != sizeof(cmdOpenSessionPayload))
{
LOG_E("processOpenSession(): OpenSession length error: %d", rlen);
writeResult(connection, MC_DRV_RSP_PAYLOAD_LENGTH_ERROR);
break;
}
// Device required
MobiCoreDevice *device = (MobiCoreDevice *) (connection->connectionData);
if (NULL == device)
{
writeResult(connection, MC_DRV_RSP_DEVICE_NOT_OPENED);
break;
}
// Get service blob from registry
regObject_t *regObj = mcRegistryGetServiceBlob(
(mcUuid_t*) &(cmdOpenSessionPayload.uuid));
// Call preinstalled variant of method
mcDrvRspOpenSession_t rspOpenSession;
if (NULL == regObj)
{
writeResult(connection, MC_DRV_RSP_TRUSTLET_NOT_FOUND);
break;
}
if (0 == regObj->len)
{
free(regObj);
writeResult(connection, MC_DRV_RSP_TRUSTLET_NOT_FOUND);
break;
}
else
{
// Trustlet retrieved from registry
LOG_I("registering L2 in kmod, p=%p, len=%i",
regObj->value,
regObj->len);
// Prepare the interface structure for memory registration, then
// register virtual memory in kernel module, create L2 table
// TODO xgal: refactor naming of datatypes and WSM handling
CWsm_ptr pWsm = device->registerWsmL2(
(addr_t)(regObj->value),
regObj->len,
0);
if (NULL == pWsm)
{
LOG_E("allocating WSM for Trustlet failed");
writeResult(connection, MC_DRV_RSP_FAILED);
break;
}
// Initialize information data of open session command
loadDataOpenSession_t loadDataOpenSession;
loadDataOpenSession.baseAddr = pWsm->physAddr;
loadDataOpenSession.offs = ((uint32_t) regObj->value) & 0xFFF;
loadDataOpenSession.len = regObj->len;
loadDataOpenSession.tlHeader = (mclfHeader_ptr) regObj->value;
device->openSession(
connection,
&loadDataOpenSession,
&cmdOpenSessionPayload,
&(rspOpenSession.payload));
// Unregister physical memory from kernel module.
// This will also destroy the WSM object.
if(!device->unregisterWsmL2(pWsm)) {
writeResult(connection, MC_DRV_RSP_FAILED);
break;
}
// Free memory occupied by Trustlet data
free(regObj);
}
uint32_t mcResult = rspOpenSession.payload.mcResult;
if (MC_MCP_RET_OK != mcResult)
{
LOG_E("rspOpenSession mcResult %d", mcResult);
writeResult(connection, MC_DRV_RSP_FAILED);
break;
}
rspOpenSession.header.responseId = MC_DRV_RSP_OK;
connection->writeData(
&rspOpenSession,
sizeof(rspOpenSession));
} while (false);
}
