static
VOID
SrvReleaseGetInfoStateHandle_SMB_V2(
HANDLE hGetInfoState
)
{
return SrvReleaseGetInfoState_SMB_V2(
(PSRV_GET_INFO_STATE_SMB_V2)hGetInfoState);
}
NTSTATUS
SrvProcessGetInfo_SMB_V2(
PSRV_EXEC_CONTEXT pExecContext
)
{
NTSTATUS ntStatus = STATUS_SUCCESS;
PLWIO_SRV_CONNECTION pConnection = pExecContext->pConnection;
PSRV_PROTOCOL_EXEC_CONTEXT pCtxProtocol = pExecContext->pProtocolContext;
PSRV_EXEC_CONTEXT_SMB_V2 pCtxSmb2 = pCtxProtocol->pSmb2Context;
PSRV_GET_INFO_STATE_SMB_V2 pGetInfoState = NULL;
PLWIO_SRV_SESSION_2 pSession = NULL;
PLWIO_SRV_TREE_2 pTree = NULL;
PLWIO_SRV_FILE_2 pFile = NULL;
BOOLEAN bInLock = FALSE;
pGetInfoState = (PSRV_GET_INFO_STATE_SMB_V2)pCtxSmb2->hState;
if (pGetInfoState)
{
InterlockedIncrement(&pGetInfoState->refCount);
}
else
{
ULONG iMsg = pCtxSmb2->iMsg;
PSRV_MESSAGE_SMB_V2 pSmbRequest = &pCtxSmb2->pRequests[iMsg];
PSMB2_GET_INFO_REQUEST_HEADER pRequestHeader = NULL; // Do not free
PBYTE pInputBuffer = NULL;
ULONG ulInputBufferLength = 0;
ntStatus = SrvConnection2FindSession_SMB_V2(
pCtxSmb2,
pConnection,
pSmbRequest->pHeader->ullSessionId,
&pSession);
BAIL_ON_NT_STATUS(ntStatus);
ntStatus = SrvSetStatSession2Info(pExecContext, pSession);
BAIL_ON_NT_STATUS(ntStatus);
ntStatus = SrvSession2FindTree_SMB_V2(
pCtxSmb2,
pSession,
pSmbRequest->pHeader->ulTid,
&pTree);
BAIL_ON_NT_STATUS(ntStatus);
ntStatus = SMB2UnmarshalGetInfoRequest(
pSmbRequest,
&pRequestHeader,
&pInputBuffer,
&ulInputBufferLength);
BAIL_ON_NT_STATUS(ntStatus);
SRV_LOG_DEBUG(
pExecContext->pLogContext,
SMB_PROTOCOL_VERSION_2,
pSmbRequest->pHeader->command,
"Get Info request params: "
"command(%u),uid(%llu),cmd-seq(%llu),pid(%u),tid(%u),"
"credits(%u),flags(0x%x),chain-offset(%u),"
"file-id(persistent:0x%x,volatile:0x%x),"
"info-class(0x%x),info-type(0x%x),flags(0x%x),"
"input-buffer-length(%u),input-buffer-offset(%u),"
"output-buffer-length(%u),additional-info(%u)",
pSmbRequest->pHeader->command,
(long long)pSmbRequest->pHeader->ullSessionId,
(long long)pSmbRequest->pHeader->ullCommandSequence,
pSmbRequest->pHeader->ulPid,
pSmbRequest->pHeader->ulTid,
pSmbRequest->pHeader->usCredits,
pSmbRequest->pHeader->ulFlags,
pSmbRequest->pHeader->ulChainOffset,
(long long)pRequestHeader->fid.ullPersistentId,
(long long)pRequestHeader->fid.ullVolatileId,
pRequestHeader->ucInfoClass,
pRequestHeader->ucInfoType,
pRequestHeader->ulFlags,
pRequestHeader->ulInputBufferLen,
pRequestHeader->usInputBufferOffset,
pRequestHeader->ulOutputBufferLen,
pRequestHeader->ulAdditionalInfo);
ntStatus = SrvTree2FindFile_SMB_V2(
pCtxSmb2,
pTree,
&pRequestHeader->fid,
&pFile);
BAIL_ON_NT_STATUS(ntStatus);
ntStatus = SrvBuildGetInfoState_SMB_V2(
pRequestHeader,
pFile,
pInputBuffer,
ulInputBufferLength,
&pGetInfoState);
BAIL_ON_NT_STATUS(ntStatus);
pCtxSmb2->hState = pGetInfoState;
InterlockedIncrement(&pGetInfoState->refCount);
pCtxSmb2->pfnStateRelease = &SrvReleaseGetInfoStateHandle_SMB_V2;
}
LWIO_LOCK_MUTEX(bInLock, &pGetInfoState->mutex);
switch (pGetInfoState->stage)
{
case SRV_GET_INFO_STAGE_SMB_V2_INITIAL:
pGetInfoState->stage = SRV_GET_INFO_STAGE_SMB_V2_ATTEMPT_IO;
// Intentional fall through
case SRV_GET_INFO_STAGE_SMB_V2_ATTEMPT_IO:
ntStatus = SrvQueryInfo_SMB_V2(pExecContext);
BAIL_ON_NT_STATUS(ntStatus);
pGetInfoState->stage = SRV_GET_INFO_STAGE_SMB_V2_BUILD_RESPONSE;
// Intentional fall through
case SRV_GET_INFO_STAGE_SMB_V2_BUILD_RESPONSE:
ntStatus = SrvBuildGetInfoResponse_SMB_V2(pExecContext);
BAIL_ON_NT_STATUS(ntStatus);
pGetInfoState->stage = SRV_GET_INFO_STAGE_SMB_V2_DONE;
// Intentional fall through
case SRV_GET_INFO_STAGE_SMB_V2_DONE:
break;
}
cleanup:
if (pFile)
{
SrvFile2Release(pFile);
}
if (pTree)
{
SrvTree2Release(pTree);
}
if (pSession)
{
SrvSession2Release(pSession);
}
if (pGetInfoState)
{
LWIO_UNLOCK_MUTEX(bInLock, &pGetInfoState->mutex);
SrvReleaseGetInfoState_SMB_V2(pGetInfoState);
}
return ntStatus;
error:
switch (ntStatus)
{
case STATUS_PENDING:
// TODO: Add an indicator to the file object to trigger a
// cleanup if the connection gets closed and all the
// files involved have to be closed
break;
default:
if (pGetInfoState)
{
SrvReleaseGetInfoStateAsync_SMB_V2(pGetInfoState);
}
break;
}
goto cleanup;
}
NTSTATUS
SrvProcessGetInfo_SMB_V2(
PSRV_EXEC_CONTEXT pExecContext
)
{
NTSTATUS ntStatus = STATUS_SUCCESS;
PLWIO_SRV_CONNECTION pConnection = pExecContext->pConnection;
PSRV_PROTOCOL_EXEC_CONTEXT pCtxProtocol = pExecContext->pProtocolContext;
PSRV_EXEC_CONTEXT_SMB_V2 pCtxSmb2 = pCtxProtocol->pSmb2Context;
PSRV_GET_INFO_STATE_SMB_V2 pGetInfoState = NULL;
PLWIO_SRV_SESSION_2 pSession = NULL;
PLWIO_SRV_TREE_2 pTree = NULL;
PLWIO_SRV_FILE_2 pFile = NULL;
BOOLEAN bInLock = FALSE;
pGetInfoState = (PSRV_GET_INFO_STATE_SMB_V2)pCtxSmb2->hState;
if (pGetInfoState)
{
InterlockedIncrement(&pGetInfoState->refCount);
}
else
{
ULONG iMsg = pCtxSmb2->iMsg;
PSRV_MESSAGE_SMB_V2 pSmbRequest = &pCtxSmb2->pRequests[iMsg];
PSMB2_GET_INFO_REQUEST_HEADER pRequestHeader = NULL; // Do not free
ntStatus = SrvConnection2FindSession_SMB_V2(
pCtxSmb2,
pConnection,
pSmbRequest->pHeader->ullSessionId,
&pSession);
BAIL_ON_NT_STATUS(ntStatus);
ntStatus = SrvSetStatSession2Info(pExecContext, pSession);
BAIL_ON_NT_STATUS(ntStatus);
ntStatus = SrvSession2FindTree_SMB_V2(
pCtxSmb2,
pSession,
pSmbRequest->pHeader->ulTid,
&pTree);
BAIL_ON_NT_STATUS(ntStatus);
ntStatus = SMB2UnmarshalGetInfoRequest(pSmbRequest, &pRequestHeader);
BAIL_ON_NT_STATUS(ntStatus);
ntStatus = SrvTree2FindFile_SMB_V2(
pCtxSmb2,
pTree,
&pRequestHeader->fid,
LwIsSetFlag(
pSmbRequest->pHeader->ulFlags,
SMB2_FLAGS_RELATED_OPERATION),
&pFile);
BAIL_ON_NT_STATUS(ntStatus);
ntStatus = SrvBuildGetInfoState_SMB_V2(
pRequestHeader,
pFile,
&pGetInfoState);
BAIL_ON_NT_STATUS(ntStatus);
pCtxSmb2->hState = pGetInfoState;
InterlockedIncrement(&pGetInfoState->refCount);
pCtxSmb2->pfnStateRelease = &SrvReleaseGetInfoStateHandle_SMB_V2;
}
LWIO_LOCK_MUTEX(bInLock, &pGetInfoState->mutex);
switch (pGetInfoState->stage)
{
case SRV_GET_INFO_STAGE_SMB_V2_INITIAL:
pGetInfoState->stage = SRV_GET_INFO_STAGE_SMB_V2_ATTEMPT_IO;
// Intentional fall through
case SRV_GET_INFO_STAGE_SMB_V2_ATTEMPT_IO:
ntStatus = SrvQueryInfo_SMB_V2(pExecContext);
BAIL_ON_NT_STATUS(ntStatus);
pGetInfoState->stage = SRV_GET_INFO_STAGE_SMB_V2_BUILD_RESPONSE;
// Intentional fall through
case SRV_GET_INFO_STAGE_SMB_V2_BUILD_RESPONSE:
ntStatus = SrvBuildGetInfoResponse_SMB_V2(pExecContext);
BAIL_ON_NT_STATUS(ntStatus);
pGetInfoState->stage = SRV_GET_INFO_STAGE_SMB_V2_DONE;
// Intentional fall through
case SRV_GET_INFO_STAGE_SMB_V2_DONE:
break;
}
cleanup:
if (pFile)
{
SrvFile2Release(pFile);
}
if (pTree)
{
SrvTree2Release(pTree);
}
if (pSession)
{
SrvSession2Release(pSession);
}
if (pGetInfoState)
{
LWIO_UNLOCK_MUTEX(bInLock, &pGetInfoState->mutex);
SrvReleaseGetInfoState_SMB_V2(pGetInfoState);
}
return ntStatus;
error:
switch (ntStatus)
{
case STATUS_PENDING:
// TODO: Add an indicator to the file object to trigger a
// cleanup if the connection gets closed and all the
// files involved have to be closed
break;
default:
if (pGetInfoState)
{
SrvReleaseGetInfoStateAsync_SMB_V2(pGetInfoState);
}
break;
}
goto cleanup;
}
