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windows-server-2003/net/qos/pclass/gpc/ioctl.c

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#include "gpcpre.h"
/*++
Copyright (c) 1996 Microsoft Corporation
Module Name:
ioctl.c
Abstract:
Creates symbolic link to receive ioctls from user mode and contains the
ioctl case statement.
Author:
Yoram Bernet (yoramb) May, 7th. 1997
Environment:
Kernel Mode
Revision History:
Ofer Bar (oferbar) Oct 1, 1997 - revision II
--*/
#pragma hdrstop
VOID
IoctlCleanup(
ULONG ShutdownMask
);
NTSTATUS
GPCIoctl(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
);
VOID
CancelPendingIrpCfInfo(
IN PDEVICE_OBJECT Device,
IN PIRP Irp
);
VOID
CancelPendingIrpNotify(
IN PDEVICE_OBJECT Device,
IN PIRP Irp
);
NTSTATUS
ProxyGpcRegisterClient(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PFILE_OBJECT FileObject,
BOOLEAN fNewInterface
);
NTSTATUS
ProxyGpcDeregisterClient(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PFILE_OBJECT FileObject,
BOOLEAN fNewInterface
);
NTSTATUS
ProxyGpcAddCfInfo(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PIRP Irp,
PFILE_OBJECT FileObject
);
NTSTATUS
ProxyGpcAddCfInfoEx(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PIRP Irp,
PFILE_OBJECT FileObject
);
NTSTATUS
ProxyGpcModifyCfInfo(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PIRP Irp,
PFILE_OBJECT FileObject
);
NTSTATUS
ProxyGpcRemoveCfInfo(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PIRP Irp,
PFILE_OBJECT FileObject,
BOOLEAN fNewInterface
);
NTSTATUS
ProxyGpcAddPattern(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PFILE_OBJECT FileObject,
BOOLEAN fNewInterface
);
NTSTATUS
ProxyGpcRemovePattern(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PFILE_OBJECT FileObject,
BOOLEAN fNewInterface
);
NTSTATUS
ProxyGpcEnumCfInfo(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PFILE_OBJECT FileObject
);
NTSTATUS
GpcValidateClientOwner (
IN GPC_HANDLE GpcClientHandle,
IN PFILE_OBJECT pFile
);
NTSTATUS
GpcValidatePatternOwner (
IN GPC_HANDLE GpcClientHandle,
IN GPC_HANDLE GpcPatternHandle
);
NTSTATUS
GpcValidateCfinfoOwner (
IN GPC_HANDLE GpcClientHandle,
IN GPC_HANDLE GpcCfInfoHandle
);
GPC_CLIENT_FUNC_LIST CallBackProxyList;
PDEVICE_OBJECT GPCDeviceObject;
LIST_ENTRY PendingIrpCfInfoList;
LIST_ENTRY PendingIrpNotifyList;
LIST_ENTRY QueuedNotificationList;
LIST_ENTRY QueuedCompletionList;
/* End Forward */
#pragma NDIS_PAGEABLE_FUNCTION(GPCIoctl)
UNICODE_STRING GpcDriverName = {sizeof(DD_GPC_DEVICE_NAME)-2,
sizeof(DD_GPC_DEVICE_NAME),
DD_GPC_DEVICE_NAME};
NTSTATUS
IoctlInitialize(
PDRIVER_OBJECT DriverObject,
PULONG InitShutdownMask
)
/*++
Routine Description:
Perform initialization
Arguments:
DriverObject - pointer to DriverObject from DriverEntry
InitShutdownMask - pointer to mask used to indicate which events have been
successfully init'ed
Return Value:
STATUS_SUCCESS if everything worked ok
--*/
{
NTSTATUS Status;
UINT FuncIndex;
InitializeListHead(&PendingIrpCfInfoList);
InitializeListHead(&PendingIrpNotifyList);
InitializeListHead(&QueuedNotificationList);
InitializeListHead(&QueuedCompletionList);
//
// Initialize the driver object's entry points
//
DriverObject->FastIoDispatch = NULL;
for (FuncIndex = 0; FuncIndex <= IRP_MJ_MAXIMUM_FUNCTION; FuncIndex++) {
DriverObject->MajorFunction[FuncIndex] = GPCIoctl;
}
Status = IoCreateDevice(DriverObject,
0,
&GpcDriverName,
FILE_DEVICE_NETWORK,
FILE_DEVICE_SECURE_OPEN,
FALSE,
&GPCDeviceObject);
if ( NT_SUCCESS( Status )) {
*InitShutdownMask |= SHUTDOWN_DELETE_DEVICE;
GPCDeviceObject->Flags |= DO_BUFFERED_IO;
/* yoramb - don't need a symbolic link for now...
Status = IoCreateSymbolicLink( &GPCSymbolicName, &GPCDriverName );
if ( NT_SUCCESS( Status )) {
*InitShutdownMask |= SHUTDOWN_DELETE_SYMLINK;
} else {
DBGPRINT(IOCTL, ("IoCreateSymbolicLink Failed (%08X): %ls -> %ls\n",
Status, GPCSymbolicName.Buffer, PSDriverName.Buffer));
}
*/
} else {
DbgPrint("IoCreateDevice failed. Status = %x\n", Status);
GPCDeviceObject = NULL;
}
//
// Initialize the callback functions. These are called by the
// kernel Gpc and turned into async notifications to the user.
// For now, the user does not get callbacks, so they are NULL.
//
CallBackProxyList.GpcVersion = GpcMajorVersion;
CallBackProxyList.ClAddCfInfoCompleteHandler = NULL;
CallBackProxyList.ClAddCfInfoNotifyHandler = NULL;
CallBackProxyList.ClModifyCfInfoCompleteHandler = NULL;
CallBackProxyList.ClModifyCfInfoNotifyHandler = NULL;
CallBackProxyList.ClRemoveCfInfoCompleteHandler = NULL;
CallBackProxyList.ClRemoveCfInfoNotifyHandler = NULL;
return Status;
}
NTSTATUS
GPCIoctl(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
Process the IRPs sent to this device.
Arguments:
DeviceObject - pointer to a device object
Irp - pointer to an I/O Request Packet
Return Value:
None
--*/
{
PIO_STACK_LOCATION irpStack;
PVOID ioBuffer;
ULONG inputBufferLength;
ULONG outputBufferLength;
ULONG ioControlCode;
UCHAR saveControlFlags;
NTSTATUS Status = STATUS_SUCCESS;
#if DBG
KIRQL irql = KeGetCurrentIrql();
KIRQL irql2;
HANDLE thrd = PsGetCurrentThreadId();
#endif
PAGED_CODE();
//
// Init to default settings- we only expect 1 type of
// IOCTL to roll through here, all others an error.
//
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = 0;
//
// Get a pointer to the current location in the Irp. This is where
// the function codes and parameters are located.
//
irpStack = IoGetCurrentIrpStackLocation(Irp);
//
// Get the pointer to the input/output buffer and it's length
//
ioBuffer = Irp->AssociatedIrp.SystemBuffer;
inputBufferLength = irpStack->Parameters.DeviceIoControl.InputBufferLength;
outputBufferLength = irpStack->Parameters.DeviceIoControl.OutputBufferLength;
ioControlCode = irpStack->Parameters.DeviceIoControl.IoControlCode;
saveControlFlags = irpStack->Control;
TRACE(LOCKS, thrd, irql, "GPCIoctl");
switch (irpStack->MajorFunction) {
case IRP_MJ_CREATE:
DBGPRINT(IOCTL, ("IRP Create\n"));
break;
case IRP_MJ_READ:
DBGPRINT(IOCTL, ("IRP Read\n"));
break;
case IRP_MJ_CLOSE:
DBGPRINT(IOCTL, ("IRP Close\n"));
TRACE(IOCTL, irpStack->FileObject, 0, "IRP Close");
//
// make sure we clean all the objects for this particular
// file object, since it's closing right now.
//
CloseAllObjects(irpStack->FileObject, Irp);
break;
case IRP_MJ_CLEANUP:
DBGPRINT(IOCTL, ("IRP Cleanup\n"));
break;
case IRP_MJ_SHUTDOWN:
DBGPRINT(IOCTL, ("IRP Shutdown\n"));
break;
case IRP_MJ_DEVICE_CONTROL:
DBGPRINT(IOCTL, ("GPCIoctl: ioctl=0x%X, IRP=0x%X\n",
ioControlCode, (ULONG_PTR)Irp));
TRACE(IOCTL, ioControlCode, Irp, "GPCIoctl.irp:");
//
// Mark the IRP as Pending BEFORE calling any dispatch routine.
// If Status is actually set to STATUS_PENDING, we assume the IRP
// is ready to be returned.
// It is possible the IoCompleteRequest has been called async for the
// IRP, but this should be taken care of by the IO subsystem.
//
IoMarkIrpPending(Irp);
switch (ioControlCode) {
case IOCTL_GPC_REGISTER_CLIENT:
Status = ProxyGpcRegisterClient(ioBuffer,
inputBufferLength,
&outputBufferLength,
irpStack->FileObject,
FALSE); //Admin Only
break;
case IOCTL_GPC_REGISTER_CLIENT_EX:
Status = ProxyGpcRegisterClient(ioBuffer,
inputBufferLength,
&outputBufferLength,
irpStack->FileObject,
TRUE); // All users
break;
case IOCTL_GPC_DEREGISTER_CLIENT:
Status = ProxyGpcDeregisterClient(ioBuffer,
inputBufferLength,
&outputBufferLength,
irpStack->FileObject,
FALSE
);// Admin Only Call
break;
case IOCTL_GPC_DEREGISTER_CLIENT_EX:
Status = ProxyGpcDeregisterClient(ioBuffer,
inputBufferLength,
&outputBufferLength,
irpStack->FileObject,
TRUE);// All users
break;
case IOCTL_GPC_ADD_CF_INFO:
Status = ProxyGpcAddCfInfo(ioBuffer,
inputBufferLength,
&outputBufferLength,
Irp,
irpStack->FileObject
);
break;
// RSVP Removal Change
// New IOCTL added
case IOCTL_GPC_ADD_CF_INFO_EX:
Status = ProxyGpcAddCfInfoEx(ioBuffer,
inputBufferLength,
&outputBufferLength,
Irp,
irpStack->FileObject
);
break;
case IOCTL_GPC_MODIFY_CF_INFO:
Status = ProxyGpcModifyCfInfo(ioBuffer,
inputBufferLength,
&outputBufferLength,
Irp,
irpStack->FileObject
);
break;
case IOCTL_GPC_REMOVE_CF_INFO:
Status = ProxyGpcRemoveCfInfo(ioBuffer,
inputBufferLength,
&outputBufferLength,
Irp,
irpStack->FileObject,
FALSE);//Admin Only
break;
case IOCTL_GPC_REMOVE_CF_INFO_EX:
Status = ProxyGpcRemoveCfInfo(ioBuffer,
inputBufferLength,
&outputBufferLength,
Irp,
irpStack->FileObject,
TRUE);//All User
break;
case IOCTL_GPC_ADD_PATTERN:
Status = ProxyGpcAddPattern(ioBuffer,
inputBufferLength,
&outputBufferLength,
irpStack->FileObject,
FALSE); //Admin only IOCTL
break;
case IOCTL_GPC_ADD_PATTERN_EX:
Status = ProxyGpcAddPattern(ioBuffer,
inputBufferLength,
&outputBufferLength,
irpStack->FileObject,
TRUE); // All user IOCTL
break;
case IOCTL_GPC_REMOVE_PATTERN:
Status = ProxyGpcRemovePattern(ioBuffer,
inputBufferLength,
&outputBufferLength,
irpStack->FileObject,
FALSE);// Admin Only IOCTL
break;
case IOCTL_GPC_REMOVE_PATTERN_EX:
Status = ProxyGpcRemovePattern(ioBuffer,
inputBufferLength,
&outputBufferLength,
irpStack->FileObject,
TRUE);// All user IOCTL
break;
case IOCTL_GPC_ENUM_CFINFO:
Status = ProxyGpcEnumCfInfo(ioBuffer,
inputBufferLength,
&outputBufferLength,
irpStack->FileObject);
break;
case IOCTL_GPC_NOTIFY_REQUEST:
//
// request to pend an IRP
//
Status = CheckQueuedNotification(Irp, &outputBufferLength);
break;
case IOCTL_GPC_GET_ENTRIES:
// Locking Down Kmode Only IOCTLs
if (ExGetPreviousMode() != KernelMode)
{
Status = STATUS_ACCESS_DENIED;
break;
}
#ifdef STANDALONE_DRIVER
//
// Return the exported calls in the buffer
//
if (outputBufferLength >= sizeof(glGpcExportedCalls)) {
NdisMoveMemory(ioBuffer,
&glGpcExportedCalls,
sizeof(glGpcExportedCalls));
outputBufferLength = sizeof(glGpcExportedCalls);
} else {
outputBufferLength = sizeof(glGpcExportedCalls);
Status = GPC_STATUS_INSUFFICIENT_BUFFER;
}
#else
Status = STATUS_INVALID_PARAMETER;
#endif
break;
default:
DBGPRINT(IOCTL, ("GPCIoctl: Unknown IRP_MJ_DEVICE_CONTROL\n = %X\n",
ioControlCode));
Status = STATUS_INVALID_PARAMETER;
break;
} // switch (ioControlCode)
break;
default:
DBGPRINT(IOCTL, ("GPCIoctl: Unknown IRP major function = %08X\n",
irpStack->MajorFunction));
Status = STATUS_UNSUCCESSFUL;
break;
}
DBGPRINT(IOCTL, ("GPCIoctl: Status=0x%X, IRP=0x%X, outSize=%d\n",
Status, (ULONG_PTR)Irp, outputBufferLength));
TRACE(IOCTL, Irp, Status, "GPCIoctl.Complete:");
if (Status != STATUS_PENDING) {
//
// IRP completed and it's not Pending, we need to restore the Control flags,
// since it might have been marked as Pending before...
//
irpStack->Control = saveControlFlags;
Irp->IoStatus.Status = Status;
Irp->IoStatus.Information = outputBufferLength;
IoCompleteRequest(Irp, IO_NETWORK_INCREMENT);
}
#if DBG
irql2 = KeGetCurrentIrql();
ASSERT(irql == irql2);
#endif
TRACE(LOCKS, thrd, irql2, "GPCIoctl (end)");
return Status;
} // GPCIoctl
VOID
IoctlCleanup(
ULONG ShutdownMask
)
/*++
Routine Description:
Cleanup code for Initialize
Arguments:
ShutdownMask - mask indicating which functions need to be cleaned up
Return Value:
None
--*/
{
/*
if ( ShutdownMask & SHUTDOWN_DELETE_SYMLINK ) {
IoDeleteSymbolicLink( &PSSymbolicName );
}
*/
if ( ShutdownMask & SHUTDOWN_DELETE_DEVICE ) {
IoDeleteDevice( GPCDeviceObject );
}
}
NTSTATUS
TcpQueryInfoComplete(PDEVICE_OBJECT pDeviceObject,
PIRP Irp,
PVOID Context)
{
PTDI_ROUTING_INFO RoutingInfo;
PTRANSPORT_ADDRESS TransportAddress;
PTA_ADDRESS TaAddress;
PTDI_ADDRESS_IP IpAddress;
int i;
PGPC_IP_PATTERN pTcpPattern;
PGPC_TCP_QUERY_CONTEXT pGpcTcpContext;
NTSTATUS Status = STATUS_MORE_PROCESSING_REQUIRED;
RoutingInfo = (PTDI_ROUTING_INFO)Context;
//
// Get a pointer to the Original Context. This allows us to access the GPC_IP_PATTERN
pGpcTcpContext = CONTAINING_RECORD(Context,GPC_TCP_QUERY_CONTEXT,RouteInfo);
//
// Retreive the pointer to the GPC_IP_PATTERN
pTcpPattern = pGpcTcpContext->pTcpPattern;
// Check status .
if (Irp->IoStatus.Status != STATUS_SUCCESS){
goto exit;
}
DBGPRINT(IOCTL,("\n"));
DBGPRINT(IOCTL,("Protocol: %d\n", RoutingInfo->Protocol));
DBGPRINT(IOCTL,("InterfaceId: %d\n", RoutingInfo->InterfaceId));
DBGPRINT(IOCTL,("LinkId: %d\n", RoutingInfo->LinkId));
// Fill up the values of the Interface
pTcpPattern->InterfaceId.InterfaceId = RoutingInfo->InterfaceId;
pTcpPattern->InterfaceId.LinkId = RoutingInfo->LinkId;
TransportAddress = (PTRANSPORT_ADDRESS)&RoutingInfo->Address;
DBGPRINT(IOCTL,("Address Count: %d\n",TransportAddress->TAAddressCount));
TaAddress = (PTA_ADDRESS)&TransportAddress->Address;
if ((2 < TransportAddress->TAAddressCount) || (1 > TransportAddress->TAAddressCount)){
// Release Memory
Status = STATUS_MORE_PROCESSING_REQUIRED;
ASSERT(FALSE);
goto exit;
}
IpAddress = (PTDI_ADDRESS_IP)&TaAddress->Address;
pTcpPattern->SrcAddr = IpAddress->in_addr;
pTcpPattern->gpcSrcPort = IpAddress->sin_port;
DBGPRINT(IOCTL,("AddressLength = %d\n",TaAddress->AddressLength));
DBGPRINT(IOCTL,("AddressType = %d\n",TaAddress->AddressType));
DBGPRINT(IOCTL,("Port = %d\n",IpAddress->sin_port));
DBGPRINT(IOCTL,("Address = %d.%d.%d.%d\n",
(IpAddress->in_addr & 0xff000000) >> 24,
(IpAddress->in_addr & 0x00ff0000) >> 16,
(IpAddress->in_addr & 0x0000ff00) >> 8,
IpAddress->in_addr & 0x000000ff));
if ( 2 == TransportAddress->TAAddressCount)
{
TaAddress = (PTA_ADDRESS)((PUCHAR)TaAddress +
FIELD_OFFSET(TA_ADDRESS, Address) +
TaAddress->AddressLength);
IpAddress = (PTDI_ADDRESS_IP)&TaAddress->Address;
pTcpPattern->DstAddr = IpAddress->in_addr;
pTcpPattern->gpcDstPort = IpAddress->sin_port;
pTcpPattern->ProtocolId = IPPROTO_TCP;
DBGPRINT(IOCTL,("AddressLength = %d\n",TaAddress->AddressLength));
DBGPRINT(IOCTL,("AddressType = %d\n",TaAddress->AddressType));
DBGPRINT(IOCTL,("Port = %d\n",IpAddress->sin_port));
DBGPRINT(IOCTL,("Address = %d.%d.%d.%d\n",
(IpAddress->in_addr & 0xff000000) >> 24,
(IpAddress->in_addr & 0x00ff0000) >> 16,
(IpAddress->in_addr & 0x0000ff00) >> 8,
IpAddress->in_addr & 0x000000ff));
}
else{
pTcpPattern->ProtocolId = IPPROTO_UDP;
}
//
// Need to free the Memory allocated, MDL and the IRP here.
exit:
IoFreeMdl(pGpcTcpContext->pMdl);
GpcFreeMem(pGpcTcpContext,TcpQueryContextTag);
IoFreeIrp(Irp);
return Status;
}
void
BuildTDIAddress(uchar * Buffer, IPAddr Addr, ushort Port)
{
PTRANSPORT_ADDRESS XportAddr;
PTA_ADDRESS TAAddr;
XportAddr = (PTRANSPORT_ADDRESS) Buffer;
XportAddr->TAAddressCount = 1;
TAAddr = XportAddr->Address;
TAAddr->AddressType = TDI_ADDRESS_TYPE_IP;
TAAddr->AddressLength = sizeof(TDI_ADDRESS_IP);
((PTDI_ADDRESS_IP) TAAddr->Address)->sin_port = Port;
((PTDI_ADDRESS_IP) TAAddr->Address)->in_addr = Addr;
memset(((PTDI_ADDRESS_IP) TAAddr->Address)->sin_zero,
0,
sizeof(((PTDI_ADDRESS_IP) TAAddr->Address)->sin_zero));
}
NTSTATUS
TcpQueryInfo(PFILE_OBJECT FileObject, PGPC_IP_PATTERN pTcpPattern, ULONG RemoteAddress, USHORT RemotePort)
{
PIRP pIrp = NULL;
PMDL pMdl = NULL;
NDIS_STATUS Status = NDIS_STATUS_SUCCESS;
PVOID pBuffer = NULL;
PVOID pInputBuf = NULL;
PIO_STACK_LOCATION pIrpSp;
TDI_CONNECTION_INFORMATION ConnInfo;
UCHAR InputBuf[FIELD_OFFSET(TRANSPORT_ADDRESS, Address) +
FIELD_OFFSET(TA_ADDRESS, Address) + sizeof(TDI_ADDRESS_IP)];
PTRANSPORT_ADDRESS Address1;
PTA_ADDRESS Address2;
PGPC_IP_PATTERN * ppPattern;
PGPC_TCP_QUERY_CONTEXT pContext= NULL;
// IRP for querying TCPIP
//Charge quota for outstanding IRPs
try{
pIrp = IoAllocateIrp((CCHAR)(FileObject->DeviceObject->StackSize), TRUE);
}
except(EXCEPTION_EXECUTE_HANDLER){
pIrp = NULL;
}
//Check for allocation failure
if (pIrp == NULL){
Status = STATUS_INSUFFICIENT_RESOURCES;
goto exit;
}
//
// Build output buf
// Allocate Space for GPC_TCP_QUERY_CONTEXT
//
GpcAllocMemWithQuota(&pBuffer, ROUTING_INFO_ADDR_2_SIZE, TcpQueryContextTag);
// Check for allocation failure
if (pBuffer==NULL) {
Status = GPC_STATUS_RESOURCES ;
goto exit;
}
// Will use pContext to index into the Data Structure
pContext = (PGPC_TCP_QUERY_CONTEXT)pBuffer;
// Store our pointer to Pattern at the beginning of the Buffer
(pContext->pTcpPattern) = pTcpPattern;
// Initialize with Remote Ports
// Will disregard these values if we get back 2 addresses from TCP
pTcpPattern->DstAddr = RemoteAddress;
pTcpPattern->gpcDstPort = RemotePort;
// Jump over the pointer stored
pBuffer = &(pContext->RouteInfo);
// Charge Quota for the MDL allocation
try{
pMdl = IoAllocateMdl(pBuffer, ROUTING_INFO_ADDR_2_SIZE-
FIELD_OFFSET(GPC_TCP_QUERY_CONTEXT ,RouteInfo), FALSE, TRUE, NULL);
}
except(EXCEPTION_EXECUTE_HANDLER){
pMdl = NULL;
}
//Check for allocation failure
if (pMdl==NULL) {
Status = GPC_STATUS_RESOURCES;
goto exit;
}
// Should not Fail
MmBuildMdlForNonPagedPool(pMdl);
// Store our pointer to MDL in the context
pContext->pMdl = pMdl;
//
// Build the input buf
// Not Expected to Fail
BuildTDIAddress(InputBuf, RemoteAddress, RemotePort);
ConnInfo.RemoteAddress = InputBuf;
ConnInfo.RemoteAddressLength = 100;
// Should not Fail
TdiBuildQueryInformationEx(pIrp,
FileObject->DeviceObject,
FileObject,
(PIO_COMPLETION_ROUTINE)TcpQueryInfoComplete,
pBuffer, // Context in completion call
TDI_QUERY_ROUTING_INFO,
pMdl,
&ConnInfo);
// Completion handler always called, don't care on return value.
Status=IoCallDriver(FileObject->DeviceObject, pIrp);
// Per SanjayKa the call should always completely syncrhonously
// If we made the call memory would be released in our
// completion function
return Status;
exit:
// release all memory
//allocated before returning
// if we failed at some
// stage
if (pMdl){
IoFreeMdl(pMdl);
}
if (pContext){
GpcFreeMem(pContext,TcpQueryContextTag);
}
if (pIrp){
IoFreeIrp(pIrp);
}
return Status;
}
// Function: ProxyGpcRegisterClient
//
// Parameters:
// PVOID ioBuffer: The buffer containing request and result
// ULONG inputBufferLength: Size of Request
// ULONG * outputBufferLength: Size of Result
// PFILE_OBJECT: The client's file object
//
// Result: The Status of the Call. an fail the IRP or return failure in the
// GPC result structure
// Environment:
// For use with the new REGISTER_CLIENT and REGISTER_CLIENT_EX
// Ioctls
NTSTATUS
ProxyGpcRegisterClient(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PFILE_OBJECT FileObject,
BOOLEAN fNewInterface
)
{
NTSTATUS Status;
PCLIENT_BLOCK pClient;
PGPC_REGISTER_CLIENT_REQ GpcReq;
PGPC_REGISTER_CLIENT_RES GpcRes;
if (inputBufferLength < sizeof(GPC_REGISTER_CLIENT_REQ)
||
*outputBufferLength < sizeof(GPC_REGISTER_CLIENT_RES)
) {
return STATUS_BUFFER_TOO_SMALL;
}
if (fNewInterface){
// Do not allow HTTP to use this IOCTL interface
//
if ( KernelMode == ExGetPreviousMode() ){
return GPC_STATUS_NOT_SUPPORTED;
}
}
GpcReq = (PGPC_REGISTER_CLIENT_REQ)ioBuffer;
GpcRes = (PGPC_REGISTER_CLIENT_RES)ioBuffer;
// Old IOCTL interface locked down to QOS only
if (GpcReq->CfId != GPC_CF_QOS) return GPC_STATUS_INVALID_PARAMETER;
// Check the flags the user is allowed to pass in
if (!((GpcReq->Flags == 0) ||(GpcReq->Flags == GPC_FLAGS_FRAGMENT))){
return GPC_STATUS_INVALID_PARAMETER;
}
// Check the number of priorities requested
if (GpcReq->MaxPriorities > GPC_PRIORITY_MAX) {
return GPC_STATUS_INVALID_PARAMETER;
}
// ClientContext not validated since we dont do anything
// with it except return it to the client
if (fNewInterface){
Status = GpcRegisterClient(GpcReq->CfId,
GpcReq->Flags | GPC_FLAGS_USERMODE_CLIENT
|GPC_FLAGS_USERMODE_CLIENT_EX,
GpcReq->MaxPriorities,
&CallBackProxyList,
GpcReq->ClientContext,
(PGPC_HANDLE)&pClient);
}
else{
Status = GpcRegisterClient(GpcReq->CfId,
GpcReq->Flags | GPC_FLAGS_USERMODE_CLIENT,
GpcReq->MaxPriorities,
&CallBackProxyList,
GpcReq->ClientContext,
(PGPC_HANDLE)&pClient);
}
ASSERT(Status != GPC_STATUS_PENDING);
if (Status == STATUS_SUCCESS) {
ASSERT(pClient);
pClient->pFileObject = FileObject;
GpcRes->ClientHandle = AllocateHandle(&pClient->ClHandle, (PVOID)pClient);
if (GpcRes->ClientHandle == NULL)
{
//Got a NULL Handle release the CLIENT_BLOCK
GpcDeregisterClient(pClient);
Status = GPC_STATUS_RESOURCES;
}
}
GpcRes->Status = Status;
*outputBufferLength = sizeof(GPC_REGISTER_CLIENT_RES);
return STATUS_SUCCESS;
}
// Function: ProxyGpcDeregisterClientEx
//
// Parameters:
// PVOID ioBuffer: The buffer containing request and result
// ULONG inputBufferLength: Size of Request
// ULONG * outputBufferLength: Size of Result
// PFILE_OBJECT: The client's file object
//
// Result: The Status of the Call. can fail the IRP or return failure in the
// GPC result structure
// Environment:
// For use with the new DEREGISTER_CLIENT_EX and DEREGISTER_CLIENT
// ioctls
NTSTATUS
ProxyGpcDeregisterClient(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PFILE_OBJECT FileObject,
BOOLEAN fNewInterface
)
{
NTSTATUS Status;
PGPC_DEREGISTER_CLIENT_REQ GpcReq;
PGPC_DEREGISTER_CLIENT_RES GpcRes;
GPC_HANDLE GpcClientHandle;
if (inputBufferLength < sizeof(GPC_DEREGISTER_CLIENT_REQ)
||
*outputBufferLength < sizeof(GPC_DEREGISTER_CLIENT_RES)
) {
return STATUS_BUFFER_TOO_SMALL;
}
if (fNewInterface){
// Do not allow HTTP to use this IOCTL interface
//
if ( KernelMode == ExGetPreviousMode() ){
return GPC_STATUS_NOT_SUPPORTED;
}
}
GpcReq = (PGPC_DEREGISTER_CLIENT_REQ)ioBuffer;
GpcRes = (PGPC_DEREGISTER_CLIENT_RES)ioBuffer;
//Validate that the client handle maps on to a CLIENT_BLOCK
GpcClientHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->ClientHandle,
GPC_ENUM_CLIENT_TYPE,
'PGDC');
if (!GpcClientHandle) {
Status = GPC_STATUS_INVALID_HANDLE;
goto exit;
}
//
// Validate that the client handle is owned by the
// calling user mode app.
Status = GpcValidateClientOwner(GpcClientHandle, FileObject);
if (STATUS_SUCCESS != Status){
goto exit;
}
Status = GpcDeregisterClient(GpcClientHandle);
exit:
if (GpcClientHandle) {
REFDEL(&((PCLIENT_BLOCK)GpcClientHandle)->RefCount, 'PGDC');
}
ASSERT(Status != GPC_STATUS_PENDING);
GpcRes->Status = Status;
*outputBufferLength = sizeof(GPC_DEREGISTER_CLIENT_RES);
return STATUS_SUCCESS;
}
//
// Function for Handling New IOCTL
// for adding cfinfo now open
// to all users.
//
// Function: ProxyGpcAddCfInfoEx
//
// Parameters:
// PVOID ioBuffer: The buffer containing request and result
// ULONG inputBufferLength: Size of Request
// ULONG * outputBufferLength: Size of Result
// PIRP Irp: The Irp
//
// Result: The Status of the Call. One of GPC_STATUS_VALUES
// documented in gpcifc.h
// Environment:
// To be used in response tos calls from winsock helper dll
// for installing QOS flows for TCP sockets.
NTSTATUS
ProxyGpcAddCfInfoEx(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PIRP Irp,
PFILE_OBJECT FileObject
)
{
NTSTATUS Status;
GPC_HANDLE GpcClientHandle = NULL;
PGPC_ADD_CF_INFO_EX_REQ GpcReq = NULL;
PGPC_ADD_CF_INFO_RES GpcRes = NULL;
PBLOB_BLOCK pBlob = NULL;
QUEUED_COMPLETION QItem;
UNICODE_STRING CfInfoName;
USHORT NameLen = 0;
PGPC_IP_PATTERN pTcpPattern = NULL;
if (inputBufferLength < sizeof(GPC_ADD_CF_INFO_EX_REQ)
||
*outputBufferLength < sizeof(GPC_ADD_CF_INFO_RES)
) {
return STATUS_BUFFER_TOO_SMALL;
}
// Do not allow HTTP to use this IOCTL interface
//
if ( KernelMode == ExGetPreviousMode() )
{
return GPC_STATUS_NOT_SUPPORTED;
}
GpcReq = (PGPC_ADD_CF_INFO_EX_REQ)ioBuffer;
GpcRes = (PGPC_ADD_CF_INFO_RES)ioBuffer;
// Validating CfInfo and CfInfoSize
if (GpcReq->CfInfoSize >
inputBufferLength - FIELD_OFFSET(GPC_ADD_CF_INFO_EX_REQ, CfInfo)) {
return STATUS_INVALID_BUFFER_SIZE;
}
// Should be atleast 1 byte : minimum size of variable length array
if (GpcReq->CfInfoSize < sizeof(CHAR)) return GPC_STATUS_INVALID_PARAMETER;
// NULL Handle
if (NULL == GpcReq->FileHandle) return GPC_STATUS_INVALID_HANDLE;
// Validate that the client handle maps on to a CLIENT_BLOCK
GpcClientHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->ClientHandle,
GPC_ENUM_CLIENT_TYPE,
'PGAC');
//Failed to get the client handle
if (!GpcClientHandle){
Status = GPC_STATUS_INVALID_HANDLE;
goto exit;
}
//
// Validate that the client handle is owned by the
// calling user mode app.
//
Status = GpcValidateClientOwner(GpcClientHandle, FileObject);
if (Status != GPC_STATUS_SUCCESS) {
// Need to release reference to CLIENT_BLOCK acquired earlier
//
goto exit;
}
// This is the new functionality
// Validate who owns the socket.
// Get the fully specified pattern from TCP
// Let's validate the request: file-object must be present
//
// 1. Get the file object for the file handle
Status = ObReferenceObjectByHandle(GpcReq->FileHandle,
0,
NULL,
KernelMode,
&FileObject,
NULL);
if (Status != GPC_STATUS_SUCCESS) {
goto exit;
}
GpcAllocMemWithQuota(&pTcpPattern , sizeof(GPC_IP_PATTERN), TcpPatternTag);
if (pTcpPattern == NULL) {
goto exit;
}
// The IOCTL sent by this function completes synchronously
// Expect the GPC_IP_PATTERN in pTcpPattern
//
Status = TcpQueryInfo(FileObject, pTcpPattern,GpcReq->RemoteAddress,GpcReq->RemotePort);
if (STATUS_SUCCESS != Status)
goto exit;
Status = privateGpcAddCfInfo(GpcClientHandle,
GpcReq->CfInfoSize,
&GpcReq->CfInfo,
GpcReq->ClientCfInfoContext,
FileObject,
pTcpPattern,
(PGPC_HANDLE)&pBlob);
if (NT_SUCCESS(Status)) {
//
// including PENDING
//
if (Status == GPC_STATUS_PENDING) {
QItem.OpCode = OP_ADD_CFINFO;
QItem.ClientHandle = GpcClientHandle;
QItem.CfInfoHandle = (GPC_HANDLE)pBlob;
Status = CheckQueuedCompletion(&QItem, Irp);
}
if (Status == GPC_STATUS_SUCCESS) {
GPC_STATUS st = GPC_STATUS_FAILURE;
GPC_CLIENT_HANDLE NotifiedClientCtx = pBlob->NotifiedClientCtx;
PCLIENT_BLOCK pNotifiedClient = pBlob->pNotifiedClient;
GpcRes->GpcCfInfoHandle = (GPC_HANDLE)AllocateHandle(&pBlob->ClHandle, (PVOID)pBlob);
// what if we cant allocate a handle? fail the add!
if (!GpcRes->GpcCfInfoHandle) {
GpcRemoveCfInfo(GpcClientHandle,
pBlob);
Status = GPC_STATUS_RESOURCES;
// This memory is freed in
// GpcRemoveCfInfo
// due to dereferencing that blob
pTcpPattern = NULL;
goto exit;
}
if (pNotifiedClient) {
if (pNotifiedClient->FuncList.ClGetCfInfoName &&
NotifiedClientCtx) {
st = pNotifiedClient->FuncList.ClGetCfInfoName(
pNotifiedClient->ClientCtx,
NotifiedClientCtx,
&CfInfoName
);
if (CfInfoName.Length >= MAX_STRING_LENGTH * sizeof(WCHAR))
CfInfoName.Length = (MAX_STRING_LENGTH-1) * sizeof(WCHAR);
//
// RajeshSu claims this can never happen.
//
ASSERT(NT_SUCCESS(st));
}
}
if (NT_SUCCESS(st)) {
//
// copy the instance name
//
GpcRes->InstanceNameLength = NameLen = CfInfoName.Length;
RtlMoveMemory(GpcRes->InstanceName,
CfInfoName.Buffer,
CfInfoName.Length
);
} else {
//
// generate a default name
//
if (NotifiedClientCtx)
swprintf(GpcRes->InstanceName, L"Flow %08X", NotifiedClientCtx);
else
swprintf(GpcRes->InstanceName, L"Flow <unkonwn name>");
GpcRes->InstanceNameLength = NameLen = wcslen(GpcRes->InstanceName)*sizeof(WCHAR);
}
GpcRes->InstanceName[GpcRes->InstanceNameLength/sizeof(WCHAR)] = L'\0';
} else {
pBlob = NULL;
// The pattern is freed along with the blob
// We have a guarantee that it was at least
// associated with the blob synchronously
pTcpPattern = NULL;
}
}
else
{
// This memory is freed in
// PrivateGpcAddCfInfoEx
// if that function fails
pTcpPattern = NULL;
}
//
// release the ref count we got earlier
//
exit:
if (GpcClientHandle) {
//
// release the ref count we got earlier
//
REFDEL(&((PCLIENT_BLOCK)GpcClientHandle)->RefCount, 'PGAC');
}
if (!NT_SUCCESS(Status) && (pTcpPattern)){
GpcFreeMem(pTcpPattern, TcpPatternTag);
}
GpcRes->InstanceNameLength = NameLen;
GpcRes->Status = Status;
*outputBufferLength = sizeof(GPC_ADD_CF_INFO_RES);
return (Status == GPC_STATUS_PENDING) ? STATUS_PENDING : STATUS_SUCCESS;
}
// Function: ProxyGpcAddCfInfo
//
// Parameters:
// PVOID ioBuffer: The buffer containing request and result
// ULONG inputBufferLength: Size of Request
// ULONG * outputBufferLength: Size of Result
// PIRP Irp: The Irp
//
// Result: The Status of the Call. One of GPC_STATUS_VALUES
// documented in gpcifc.h
// Environment:
// To be used in response to calls from HTTP.sys and traffic.dll
// for installing QOS flows for TCP sockets.
NTSTATUS
ProxyGpcAddCfInfo(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PIRP Irp,
PFILE_OBJECT FileObject
)
{
NTSTATUS Status;
GPC_HANDLE GpcClientHandle;
PGPC_ADD_CF_INFO_REQ GpcReq;
PGPC_ADD_CF_INFO_RES GpcRes;
PBLOB_BLOCK pBlob = NULL;
QUEUED_COMPLETION QItem;
UNICODE_STRING CfInfoName;
USHORT NameLen = 0;
if (inputBufferLength < sizeof(GPC_ADD_CF_INFO_REQ)
||
*outputBufferLength < sizeof(GPC_ADD_CF_INFO_RES)
) {
return STATUS_BUFFER_TOO_SMALL;
}
GpcReq = (PGPC_ADD_CF_INFO_REQ)ioBuffer;
GpcRes = (PGPC_ADD_CF_INFO_RES)ioBuffer;
//Validate CfInfo and CfInfoSize
if (GpcReq->CfInfoSize >
inputBufferLength - FIELD_OFFSET(GPC_ADD_CF_INFO_REQ, CfInfo)) {
return STATUS_INVALID_BUFFER_SIZE;
}
if (GpcReq->CfInfoSize < 1) return GPC_STATUS_INVALID_PARAMETER;
//Validate that the client handle maps on to a CLIENT_BLOCK
GpcClientHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->ClientHandle,
GPC_ENUM_CLIENT_TYPE,
'PGAC');
if (GpcClientHandle) {
//
// Validate that the client handle is owned by the
// calling user mode app.
//
Status = GpcValidateClientOwner(GpcClientHandle, FileObject);
if (Status == GPC_STATUS_SUCCESS)
{
Status = privateGpcAddCfInfo(GpcClientHandle,
GpcReq->CfInfoSize,
&GpcReq->CfInfo,
GpcReq->ClientCfInfoContext,
NULL,
NULL,
(PGPC_HANDLE)&pBlob);
}
if (NT_SUCCESS(Status)) {
//
// including PENDING
//
if (Status == GPC_STATUS_PENDING) {
QItem.OpCode = OP_ADD_CFINFO;
QItem.ClientHandle = GpcClientHandle;
QItem.CfInfoHandle = (GPC_HANDLE)pBlob;
Status = CheckQueuedCompletion(&QItem, Irp);
}
if (Status == GPC_STATUS_SUCCESS) {
GPC_STATUS st = GPC_STATUS_FAILURE;
GPC_CLIENT_HANDLE NotifiedClientCtx = pBlob->NotifiedClientCtx;
PCLIENT_BLOCK pNotifiedClient = pBlob->pNotifiedClient;
GpcRes->GpcCfInfoHandle = (GPC_HANDLE)AllocateHandle(&pBlob->ClHandle, (PVOID)pBlob);
// what if we cant allocate a handle? fail the add!
if (!GpcRes->GpcCfInfoHandle) {
GpcRemoveCfInfo(GpcClientHandle,
pBlob);
Status = STATUS_INSUFFICIENT_RESOURCES;
goto exit;
}
if (pNotifiedClient) {
if (pNotifiedClient->FuncList.ClGetCfInfoName &&
NotifiedClientCtx) {
st = pNotifiedClient->FuncList.ClGetCfInfoName(
pNotifiedClient->ClientCtx,
NotifiedClientCtx,
&CfInfoName
);
if (CfInfoName.Length >= MAX_STRING_LENGTH * sizeof(WCHAR))
CfInfoName.Length = (MAX_STRING_LENGTH-1) * sizeof(WCHAR);
//
// RajeshSu claims this can never happen.
//
ASSERT(NT_SUCCESS(st));
}
}
if (NT_SUCCESS(st)) {
//
// copy the instance name
//
GpcRes->InstanceNameLength = NameLen = CfInfoName.Length;
RtlMoveMemory(GpcRes->InstanceName,
CfInfoName.Buffer,
CfInfoName.Length
);
} else {
//
// generate a default name
//
if (NotifiedClientCtx)
swprintf(GpcRes->InstanceName, L"Flow %08X", NotifiedClientCtx);
else
swprintf(GpcRes->InstanceName, L"Flow <unkonwn name>");
GpcRes->InstanceNameLength = NameLen = wcslen(GpcRes->InstanceName)*sizeof(WCHAR);
}
GpcRes->InstanceName[GpcRes->InstanceNameLength/sizeof(WCHAR)] = L'\0';
} else {
pBlob = NULL;
}
}
//
// release the ref count we got earlier
//
exit:
REFDEL(&((PCLIENT_BLOCK)GpcClientHandle)->RefCount, 'PGAC');
} else {
ASSERT(pBlob == NULL);
Status = GPC_STATUS_INVALID_HANDLE;
}
GpcRes->InstanceNameLength = NameLen;
GpcRes->Status = Status;
*outputBufferLength = sizeof(GPC_ADD_CF_INFO_RES);
return (Status == GPC_STATUS_PENDING) ? STATUS_PENDING : STATUS_SUCCESS;
}
NTSTATUS
ProxyGpcAddPattern(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PFILE_OBJECT FileObject,
BOOLEAN fNewInterface
)
{
NTSTATUS Status;
GPC_HANDLE GpcClientHandle=NULL;
GPC_HANDLE GpcCfInfoHandle=NULL;
CLASSIFICATION_HANDLE ClassificationHandle = 0;
PGPC_ADD_PATTERN_REQ GpcReq;
PGPC_ADD_PATTERN_RES GpcRes;
PVOID Pattern;
PVOID Mask;
PPATTERN_BLOCK pPattern;
PBLOB_BLOCK pBlob = NULL ;
if (inputBufferLength < sizeof(GPC_ADD_PATTERN_REQ)
||
*outputBufferLength < sizeof(GPC_ADD_PATTERN_RES)
) {
return STATUS_BUFFER_TOO_SMALL;
}
if (fNewInterface){
// Do not allow HTTP to use this IOCTL interface
//
if ( KernelMode == ExGetPreviousMode() ){
return GPC_STATUS_NOT_SUPPORTED;
}
}
GpcReq = (PGPC_ADD_PATTERN_REQ)ioBuffer;
GpcRes = (PGPC_ADD_PATTERN_RES)ioBuffer;
//Validate PatternSize and Size of PatternAndMask array
if (GpcReq->PatternSize > MAX_PATTERN_SIZE) {
return STATUS_INVALID_PARAMETER;
}
if (inputBufferLength - FIELD_OFFSET(GPC_ADD_PATTERN_REQ, PatternAndMask)
< 2 * GpcReq->PatternSize) {
return STATUS_BUFFER_TOO_SMALL;
}
//
//Validate that the client handle maps on to a CLIENT_BLOCK
GpcClientHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->ClientHandle,
GPC_ENUM_CLIENT_TYPE,
'PGAP');
//
// Validate that the cfInfo handle maps on to a BLOB_BLOCK
GpcCfInfoHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->GpcCfInfoHandle,
GPC_ENUM_CFINFO_TYPE,
'PGAP');
if (!(GpcClientHandle && GpcCfInfoHandle)){
Status = GPC_STATUS_INVALID_HANDLE;
goto exit;
}
Pattern = (PVOID)&GpcReq->PatternAndMask;
Mask = (PVOID)((PCHAR)(&GpcReq->PatternAndMask) + GpcReq->PatternSize);
//
// Validate that the client handle is owned by the
// calling user mode app.
//
Status = GpcValidateClientOwner(GpcClientHandle, FileObject);
if ( GPC_STATUS_SUCCESS != Status ){
goto exit;
}
//
// Validate that the client owns the cfinfo
// to which he wants to link the pattern to
//
Status = GpcValidateCfinfoOwner(GpcClientHandle,GpcCfInfoHandle);
if (GPC_STATUS_SUCCESS != Status) {
goto exit;
}
pBlob = (PBLOB_BLOCK)GpcCfInfoHandle;
// Priority and Protocol Template Validation
if (GpcReq->Priority >=
((PCLIENT_BLOCK)(GpcClientHandle))->pCfBlock->MaxPriorities ||
GpcReq->ProtocolTemplate >= GPC_PROTOCOL_TEMPLATE_MAX ) {
Status = GPC_STATUS_INVALID_PARAMETER;
goto exit;
}
// EX IOCTL users should already have their
// GPC_IP_PATTERN hanging off the
// BLOB_BLOCK
if ((fNewInterface) && (!pBlob->Pattern)) {
Status = GPC_STATUS_INVALID_PARAMETER;
goto exit;
}
//EX IOCTL users only
if (fNewInterface){
//Extra code for the new IOCTL.
// The cfinfo should contain a valid pattern pointer
// receiverd during the previous call to ProxyGpcAddCfinfoEx
RtlCopyMemory(Pattern, pBlob->Pattern, sizeof(GPC_IP_PATTERN));
RtlFillMemory(Mask, sizeof(GPC_IP_PATTERN), 0xff);
}
Status = GpcAddPattern(GpcClientHandle,
GpcReq->ProtocolTemplate,
Pattern,
Mask,
GpcReq->Priority,
GpcCfInfoHandle,
(PGPC_HANDLE)&pPattern,
&ClassificationHandle);
if (Status == GPC_STATUS_SUCCESS) {
ASSERT(Pattern);
GpcRes->GpcPatternHandle = AllocateHandle(&pPattern->ClHandle, (PVOID)pPattern);
//
// In certain circs, alloc_HF_handle could return 0.
// check for that and clean up the mess.
//
if (!GpcRes->GpcPatternHandle) {
//
// remove the pattern that was just added.
//
Status = GpcRemovePattern(GpcClientHandle,
pPattern);
//
// This was really the problem why we got a NULL handle
//
Status = GPC_STATUS_RESOURCES;
}
}
exit:
if (GpcCfInfoHandle) {
REFDEL(&((PBLOB_BLOCK)GpcCfInfoHandle)->RefCount, 'PGAP');
}
if (GpcClientHandle) {
//
// release the ref count we got earlier
//
REFDEL(&((PCLIENT_BLOCK)GpcClientHandle)->RefCount, 'PGAP');
}
ASSERT(Status != GPC_STATUS_PENDING);
GpcRes->Status = Status;
GpcRes->ClassificationHandle = ClassificationHandle;
*outputBufferLength = sizeof(GPC_ADD_PATTERN_RES);
return STATUS_SUCCESS;
}
NTSTATUS
ProxyGpcModifyCfInfo(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PIRP Irp,
PFILE_OBJECT FileObject
)
{
NTSTATUS Status;
GPC_HANDLE GpcClientHandle;
GPC_HANDLE GpcCfInfoHandle;
PGPC_MODIFY_CF_INFO_REQ GpcReq;
PGPC_MODIFY_CF_INFO_RES GpcRes;
QUEUED_COMPLETION QItem;
if (inputBufferLength < sizeof(GPC_MODIFY_CF_INFO_REQ)
||
*outputBufferLength < sizeof(GPC_MODIFY_CF_INFO_RES)
) {
return STATUS_BUFFER_TOO_SMALL;
}
GpcReq = (PGPC_MODIFY_CF_INFO_REQ)ioBuffer;
GpcRes = (PGPC_MODIFY_CF_INFO_RES)ioBuffer;
if (GpcReq->CfInfoSize >
inputBufferLength - FIELD_OFFSET(GPC_MODIFY_CF_INFO_REQ, CfInfo)) {
return STATUS_INVALID_BUFFER_SIZE;
}
// Validate that the client handle maps on to a valid CLIENT_BLOCK
GpcClientHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->ClientHandle,
GPC_ENUM_CLIENT_TYPE,
'PGMP');
// Validate that the cfInfo handle maps on to a valid BLOB_BLOCK
GpcCfInfoHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->GpcCfInfoHandle,
GPC_ENUM_CFINFO_TYPE,
'PGMP');
if (GpcClientHandle && GpcCfInfoHandle) {
//
// Validate that the client handle is owned by the
// calling user mode app.
//
Status = GpcValidateClientOwner(GpcClientHandle, FileObject);
if (Status == GPC_STATUS_SUCCESS)
{
//
// Validate that the client only modifies a CfInfo that
// belongs to him.
//
Status = GpcValidateCfinfoOwner (GpcClientHandle , GpcCfInfoHandle);
if ( Status == GPC_STATUS_SUCCESS )
{
Status = GpcModifyCfInfo(GpcClientHandle,
GpcCfInfoHandle,
GpcReq->CfInfoSize,
&GpcReq->CfInfo
);
}
}
if (Status == GPC_STATUS_PENDING) {
QItem.OpCode = OP_MODIFY_CFINFO;
QItem.ClientHandle = GpcClientHandle;
QItem.CfInfoHandle = GpcCfInfoHandle;
Status = CheckQueuedCompletion(&QItem, Irp);
}
} else {
Status = STATUS_INVALID_HANDLE;
}
if (GpcCfInfoHandle) {
REFDEL(&((PBLOB_BLOCK)GpcCfInfoHandle)->RefCount, 'PGMP');
}
if (GpcClientHandle) {
//
// release the ref count we got earlier
//
REFDEL(&((PCLIENT_BLOCK)GpcClientHandle)->RefCount, 'PGMP');
}
GpcRes->Status = Status;
*outputBufferLength = sizeof(GPC_MODIFY_CF_INFO_RES);
return (Status == GPC_STATUS_PENDING) ? STATUS_PENDING : STATUS_SUCCESS;
}
NTSTATUS
ProxyGpcRemoveCfInfo(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PIRP Irp,
PFILE_OBJECT FileObject,
BOOLEAN fNewInterface
)
{
NTSTATUS Status;
GPC_HANDLE GpcClientHandle;
GPC_HANDLE GpcCfInfoHandle;
PGPC_REMOVE_CF_INFO_REQ GpcReq;
PGPC_REMOVE_CF_INFO_RES GpcRes;
QUEUED_COMPLETION QItem;
if (inputBufferLength < sizeof(GPC_REMOVE_CF_INFO_REQ)
||
*outputBufferLength < sizeof(GPC_REMOVE_CF_INFO_RES)
) {
return STATUS_BUFFER_TOO_SMALL;
}
if (fNewInterface){
// Do not allow HTTP to use this IOCTL interface
//
if ( KernelMode == ExGetPreviousMode() ){
return GPC_STATUS_NOT_SUPPORTED;
}
}
GpcReq = (PGPC_REMOVE_CF_INFO_REQ)ioBuffer;
GpcRes = (PGPC_REMOVE_CF_INFO_RES)ioBuffer;
GpcClientHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->ClientHandle,
GPC_ENUM_CLIENT_TYPE,
'PGRC');
GpcCfInfoHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->GpcCfInfoHandle,
GPC_ENUM_CFINFO_TYPE,
'PGRC');
if (GpcClientHandle && GpcCfInfoHandle) {
//
// Validate that the client handle is owned by the
// calling user mode app.
//
Status = GpcValidateClientOwner(GpcClientHandle, FileObject);
if (Status == GPC_STATUS_SUCCESS)
{
//
// Validate that the client only removes a cfinfo
// that belongs to him
//
Status = GpcValidateCfinfoOwner (GpcClientHandle , GpcCfInfoHandle);
if ( Status == GPC_STATUS_SUCCESS )
{
if (fNewInterface){
Status = privateGpcRemoveCfInfo(GpcClientHandle,
GpcCfInfoHandle,
GPC_FLAGS_USERMODE_CLIENT
|GPC_FLAGS_USERMODE_CLIENT_EX);
}
else{
Status = privateGpcRemoveCfInfo(GpcClientHandle,
GpcCfInfoHandle,
GPC_FLAGS_USERMODE_CLIENT);
}
}
}
if (Status == GPC_STATUS_PENDING) {
QItem.OpCode = OP_REMOVE_CFINFO;
QItem.ClientHandle = GpcClientHandle;
QItem.CfInfoHandle = GpcCfInfoHandle;
Status = CheckQueuedCompletion(&QItem, Irp);
}
} else {
Status = STATUS_INVALID_HANDLE;
}
if (GpcCfInfoHandle) {
//
// release the ref count we got earlier
//
REFDEL(&((PBLOB_BLOCK)GpcCfInfoHandle)->RefCount, 'PGRC');
}
if (GpcClientHandle) {
//
// release the ref count we got earlier
//
REFDEL(&((PCLIENT_BLOCK)GpcClientHandle)->RefCount, 'PGRC');
}
GpcRes->Status = Status;
*outputBufferLength = sizeof(GPC_REMOVE_CF_INFO_RES);
return (Status == GPC_STATUS_PENDING) ? STATUS_PENDING : STATUS_SUCCESS;
}
NTSTATUS
ProxyGpcRemovePattern(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PFILE_OBJECT FileObject,
BOOLEAN fNewInterface
)
{
NTSTATUS Status;
GPC_HANDLE GpcClientHandle;
GPC_HANDLE GpcPatternHandle;
PGPC_REMOVE_PATTERN_REQ GpcReq;
PGPC_REMOVE_PATTERN_RES GpcRes;
if (inputBufferLength < sizeof(GPC_REMOVE_PATTERN_REQ)
||
*outputBufferLength < sizeof(GPC_REMOVE_PATTERN_RES)
) {
return STATUS_BUFFER_TOO_SMALL;
}
if (fNewInterface){
// Do not allow HTTP to use this IOCTL interface
//
if ( KernelMode == ExGetPreviousMode() ){
return GPC_STATUS_NOT_SUPPORTED;
}
}
GpcReq = (PGPC_REMOVE_PATTERN_REQ)ioBuffer;
GpcRes = (PGPC_REMOVE_PATTERN_RES)ioBuffer;
GpcClientHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->ClientHandle,
GPC_ENUM_CLIENT_TYPE,
'PGRP');
GpcPatternHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->GpcPatternHandle,
GPC_ENUM_PATTERN_TYPE,
'PGRP');
if (!(GpcClientHandle && GpcPatternHandle) ) {
Status = GPC_STATUS_INVALID_HANDLE;
goto exit;
}
//
// Validate that the client handle is owned by the
// calling user mode app.
//
Status = GpcValidateClientOwner(GpcClientHandle, FileObject);
if (GPC_STATUS_SUCCESS != Status) {
goto exit;
}
//
// Validate that the client owns the Pattern that it is trying to delete
//
Status = GpcValidatePatternOwner(GpcClientHandle,GpcPatternHandle);
if (GPC_STATUS_SUCCESS != Status){
goto exit;
}
Status = GpcRemovePattern(GpcClientHandle,
GpcPatternHandle);
exit:
if (GpcPatternHandle) {
REFDEL(&((PPATTERN_BLOCK)GpcPatternHandle)->RefCount, 'PGRP');
}
if (GpcClientHandle) {
REFDEL(&((PCLIENT_BLOCK)GpcClientHandle)->RefCount, 'PGRP');
}
ASSERT(Status != GPC_STATUS_PENDING);
GpcRes->Status = Status;
*outputBufferLength = sizeof(GPC_REMOVE_PATTERN_RES);
return STATUS_SUCCESS;
}
NTSTATUS
ProxyGpcEnumCfInfo(
PVOID ioBuffer,
ULONG inputBufferLength,
ULONG *outputBufferLength,
PFILE_OBJECT FileObject
)
{
NTSTATUS Status;
PGPC_ENUM_CFINFO_REQ GpcReq;
PGPC_ENUM_CFINFO_RES GpcRes;
ULONG Size;
ULONG TotalCount;
GPC_HANDLE GpcClientHandle;
GPC_HANDLE GpcCfInfoHandle;
GPC_HANDLE EnumHandle;
PBLOB_BLOCK pBlob;
if (inputBufferLength < sizeof(GPC_ENUM_CFINFO_REQ)
||
*outputBufferLength < sizeof(GPC_ENUM_CFINFO_RES)
) {
return STATUS_BUFFER_TOO_SMALL;
}
GpcReq = (PGPC_ENUM_CFINFO_REQ)ioBuffer;
GpcRes = (PGPC_ENUM_CFINFO_RES)ioBuffer;
GpcClientHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->ClientHandle,
GPC_ENUM_CLIENT_TYPE,
'PGEC');
GpcCfInfoHandle = (GPC_HANDLE)GetHandleObjectWithRef(GpcReq->EnumHandle,
GPC_ENUM_CFINFO_TYPE,
'PGEC');
if (GpcReq->EnumHandle != NULL && GpcCfInfoHandle == NULL) {
//
// the flow has been deleted during enumeration
//
Status = STATUS_DATA_ERROR;
} else if (GpcClientHandle) {
TotalCount = GpcReq->CfInfoCount;
EnumHandle = GpcReq->EnumHandle;
Size = *outputBufferLength - FIELD_OFFSET(GPC_ENUM_CFINFO_RES,
EnumBuffer);
//
// save the blob pointer with the one extra ref count
// since we called GetHandleObjectWithRef
//
pBlob = (PBLOB_BLOCK)GpcCfInfoHandle;
Status = GpcEnumCfInfo(GpcClientHandle,
&GpcCfInfoHandle,
&EnumHandle,
&TotalCount,
&Size,
GpcRes->EnumBuffer
);
if (pBlob) {
REFDEL(&pBlob->RefCount, 'PGEC');
}
if (Status == GPC_STATUS_SUCCESS) {
//
// fill in the results
//
GpcRes->TotalCfInfo = TotalCount;
GpcRes->EnumHandle = EnumHandle;
*outputBufferLength = Size + FIELD_OFFSET(GPC_ENUM_CFINFO_RES,
EnumBuffer);
}
} else {
if (GpcCfInfoHandle) {
REFDEL(&((PBLOB_BLOCK)GpcCfInfoHandle)->RefCount, 'PGEC');
}
Status = STATUS_INVALID_HANDLE;
}
if (GpcClientHandle) {
//
// release the ref count we got earlier
//
REFDEL(&((PCLIENT_BLOCK)GpcClientHandle)->RefCount, 'PGEC');
}
ASSERT(Status != GPC_STATUS_PENDING);
GpcRes->Status = Status;
return STATUS_SUCCESS;
}
VOID
CancelPendingIrpCfInfo(
IN PDEVICE_OBJECT Device,
IN PIRP Irp
)
/*++
Routine Description:
Cancels an outstanding IRP request for a CfInfo request.
Arguments:
Device - The device on which the request was issued.
Irp - Pointer to I/O request packet to cancel.
Return Value:
None
Notes:
This function is called with cancel spinlock held. It must be
released before the function returns.
The cfinfo block associated with this request cannot be
freed until the request completes. The completion routine will
free it.
--*/
{
PPENDING_IRP pPendingIrp = NULL;
PPENDING_IRP pItem;
PLIST_ENTRY pEntry;
#if DBG
KIRQL irql = KeGetCurrentIrql();
HANDLE thrd = PsGetCurrentThreadId();
#endif
DBGPRINT(IOCTL, ("CancelPendingIrpCfInfo: Irp=0x%X\n",
(ULONG_PTR)Irp));
TRACE(IOCTL, Irp, 0, "CancelPendingIrpCfInfo:");
TRACE(LOCKS, thrd, irql, "CancelPendingIrpCfInfo:");
for ( pEntry = PendingIrpCfInfoList.Flink;
pEntry != &PendingIrpCfInfoList;
pEntry = pEntry->Flink ) {
pItem = CONTAINING_RECORD(pEntry, PENDING_IRP, Linkage);
if (pItem->Irp == Irp) {
pPendingIrp = pItem;
GpcRemoveEntryList(pEntry);
IoSetCancelRoutine(pPendingIrp->Irp, NULL);
break;
}
}
IoReleaseCancelSpinLock(Irp->CancelIrql);
if (pPendingIrp != NULL) {
DBGPRINT(IOCTL, ("CancelPendingIrpCfInfo: found PendingIrp=0x%X\n",
(ULONG_PTR)pPendingIrp));
TRACE(IOCTL, Irp, pPendingIrp, "CancelPendingIrpCfInfo.PendingIrp:");
//
// Free the PENDING_IRP structure. The control block will be freed
// when the request completes.
//
GpcFreeToLL(pPendingIrp, &PendingIrpLL, PendingIrpTag);
//
// Complete the IRP.
//
Irp->IoStatus.Information = 0;
Irp->IoStatus.Status = STATUS_CANCELLED;
IoCompleteRequest(Irp, IO_NETWORK_INCREMENT);
} else {
DBGPRINT(IOCTL, ("CancelPendingIrpCfInfo: PendingIrp not found\n"));
TRACE(IOCTL, Irp, 0, "CancelPendingIrpCfInfo.NoPendingIrp:");
}
#if DBG
irql = KeGetCurrentIrql();
#endif
TRACE(LOCKS, thrd, irql, "CancelPendingIrpCfInfo (end)");
return;
}
VOID
CancelPendingIrpNotify(
IN PDEVICE_OBJECT Device,
IN PIRP Irp
)
/*++
Routine Description:
Cancels an outstanding IRP request for a notification.
Arguments:
Device - The device on which the request was issued.
Irp - Pointer to I/O request packet to cancel.
Return Value:
None
Notes:
This function is called with cancel spinlock held. It must be
released before the function returns.
--*/
{
PPENDING_IRP pPendingIrp = NULL;
PPENDING_IRP pItem;
PLIST_ENTRY pEntry;
#if DBG
KIRQL irql = KeGetCurrentIrql();
HANDLE thrd = PsGetCurrentThreadId();
#endif
DBGPRINT(IOCTL, ("CancelPendingIrpNotify: Irp=0x%X\n",
(ULONG_PTR)Irp));
TRACE(IOCTL, Irp, 0, "CancelPendingIrpNotify:");
TRACE(LOCKS, thrd, irql, "CancelPendingIrpNotify:");
for ( pEntry = PendingIrpNotifyList.Flink;
pEntry != &PendingIrpNotifyList;
pEntry = pEntry->Flink ) {
pItem = CONTAINING_RECORD(pEntry, PENDING_IRP, Linkage);
if (pItem->Irp == Irp) {
pPendingIrp = pItem;
GpcRemoveEntryList(pEntry);
IoSetCancelRoutine(pPendingIrp->Irp, NULL);
break;
}
}
IoReleaseCancelSpinLock(Irp->CancelIrql);
if (pPendingIrp != NULL) {
DBGPRINT(IOCTL, ("CancelPendingIrpNotify: Found a PendingIrp=0x%X\n",
(ULONG_PTR)pPendingIrp));
TRACE(IOCTL, Irp, pPendingIrp, "CancelPendingIrpNotify.PendingIrp:");
//
// Free the PENDING_IRP structure.
//
GpcFreeToLL(pPendingIrp, &PendingIrpLL, PendingIrpTag);
//
// Complete the IRP.
//
Irp->IoStatus.Information = 0;
Irp->IoStatus.Status = STATUS_CANCELLED;
IoCompleteRequest(Irp, IO_NETWORK_INCREMENT);
} else {
DBGPRINT(IOCTL, ("CancelPendingIrpNotify: PendingIrp not found\n"));
TRACE(IOCTL, Irp, 0, "CancelPendingIrpNotify.NoPendingIrp:");
}
#if DBG
irql = KeGetCurrentIrql();
#endif
TRACE(LOCKS, thrd, irql, "CancelPendingIrpNotify (end)");
return;
}
VOID
UMClientRemoveCfInfoNotify(
IN PCLIENT_BLOCK pClient,
IN PBLOB_BLOCK pBlob
)
/*++
Routine Description:
Notify user mode client that the CfInfo is deleted.
This will dequeue a pending IRP and will complete it.
If there is no pending IRP, a GPC_NOTIFY_REQUEST_RES buffer
will be queued until we get an IRP down the stack.
Arguments:
pClient - the notified client
pBlob - the deleted cfinfo
Return Value:
None
--*/
{
KIRQL oldIrql;
PIRP pIrp;
PPENDING_IRP pPendingIrp = NULL;
PLIST_ENTRY pEntry;
PQUEUED_NOTIFY pQItem;
PGPC_NOTIFY_REQUEST_RES GpcRes;
ASSERT(pClient == pBlob->pOwnerClient);
DBGPRINT(IOCTL, ("UMClientRemoveCfInfoNotify: pClient=0x%X, pBlob=0x%X\n",
(ULONG_PTR)pClient, (ULONG_PTR)pBlob));
TRACE(IOCTL, pClient, pBlob, "UMClientRemoveCfInfoNotify:");
//
// Find the request IRP on the pending list.
//
IoAcquireCancelSpinLock(&oldIrql);
for ( pEntry = PendingIrpNotifyList.Flink;
pEntry != &PendingIrpNotifyList;
pEntry = pEntry->Flink ) {
pPendingIrp = CONTAINING_RECORD( pEntry, PENDING_IRP, Linkage);
if (pPendingIrp->FileObject == pClient->pFileObject) {
//
// that's the pending request
//
pIrp = pPendingIrp->Irp;
IoSetCancelRoutine(pIrp, NULL);
GpcRemoveEntryList(pEntry);
break;
} else {
pPendingIrp = NULL;
}
}
if (pPendingIrp == NULL) {
//
// No IRP, we need to queue the notification block
//
DBGPRINT(IOCTL, ("UMClientRemoveCfInfoNotify: No pending IRP found\n"
));
TRACE(IOCTL,
pClient->ClientCtx,
pBlob->arClientCtx[pClient->AssignedIndex],
"UMClientRemoveCfInfoNotify.NoPendingIrp:");
GpcAllocFromLL(&pQItem, &QueuedNotificationLL, QueuedNotificationTag);
if (pQItem) {
pQItem->FileObject = pClient->pFileObject;
//
// fill the item
//
pQItem->NotifyRes.ClientCtx = pClient->ClientCtx;
pQItem->NotifyRes.NotificationCtx =
(ULONG_PTR)pBlob->arClientCtx[pClient->AssignedIndex];
pQItem->NotifyRes.SubCode = GPC_NOTIFY_CFINFO_CLOSED;
pQItem->NotifyRes.Reason = 0; // for now...
pQItem->NotifyRes.Param1 = 0; // for now...
GpcInsertTailList(&QueuedNotificationList, &pQItem->Linkage);
}
}
IoReleaseCancelSpinLock(oldIrql);
if (pPendingIrp) {
//
// found an IRP, fill and complete
//
DBGPRINT(IOCTL, ("UMClientRemoveCfInfoNotify: Pending IRP found=0x%X\n",
(ULONG_PTR)pIrp));
TRACE(IOCTL,
pClient->ClientCtx,
pBlob->arClientCtx[pClient->AssignedIndex],
"UMClientRemoveCfInfoNotify.PendingIrp:");
GpcRes = (PGPC_NOTIFY_REQUEST_RES)pIrp->AssociatedIrp.SystemBuffer;
GpcRes->ClientCtx = pClient->ClientCtx;
GpcRes->NotificationCtx =
(ULONG_PTR)pBlob->arClientCtx[pClient->AssignedIndex];
GpcRes->SubCode = GPC_NOTIFY_CFINFO_CLOSED;
GpcRes->Reason = 0; // for now...
GpcRes->Param1 = 0; // for now...
//
// complete the IRP
//
pIrp->IoStatus.Information = sizeof(GPC_NOTIFY_REQUEST_REQ);
pIrp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(pIrp, IO_NETWORK_INCREMENT);
//
// We can free the pending irp item
//
GpcFreeToLL(pPendingIrp, &PendingIrpLL, PendingIrpTag);
}
//
// for now - complete the operation
// we should probably let the User Mode client do it,
// but this complicates things a little...
//
GpcRemoveCfInfoNotifyComplete((GPC_HANDLE)pClient,
(GPC_HANDLE)pBlob,
GPC_STATUS_SUCCESS
);
return;
}
VOID
UMCfInfoComplete(
IN GPC_COMPLETION_OP OpCode,
IN PCLIENT_BLOCK pClient,
IN PBLOB_BLOCK pBlob,
IN GPC_STATUS Status
)
/*++
Routine Description:
This is the completion routine for any pending CfInfo request.
It will search the pending IRP CfInfo list for a matching CfInfo
structure that has been stored while the Add, Modify or Remove
request returned PENDING. The client must be the CfInfo owner,
otherwise we would have never got here.
If an IRP is not found, it means the operation completed *before*
we got back the PENDING status, which is perfectly legal.
In this case, we queue a completion item and return.
Arguments:
OpCode - the code of the completion (add, modify or remove)
pClient - the notified client
pBlob - the deleted cfinfo
Status - the reported status
Return Value:
None
--*/
{
typedef union _GPC_CF_INFO_RES {
GPC_ADD_CF_INFO_RES AddRes;
GPC_MODIFY_CF_INFO_RES ModifyRes;
GPC_REMOVE_CF_INFO_RES RemoveRes;
} GPC_CF_INFO_RES;
KIRQL oldIrql;
PIRP pIrp;
PIO_STACK_LOCATION pIrpSp;
PPENDING_IRP pPendingIrp = NULL;
PLIST_ENTRY pEntry;
GPC_CF_INFO_RES *GpcRes;
ULONG outputBuferLength;
//PQUEUED_COMPLETION pQItem;
//ASSERT(pClient == pBlob->pOwnerClient);
DBGPRINT(IOCTL, ("UMCfInfoComplete: pClient=0x%X, pBlob=0x%X, Status=0x%X\n",
(ULONG_PTR)pClient, (ULONG_PTR)pBlob, Status));
TRACE(IOCTL, OpCode, pClient, "UMCfInfoComplete:");
TRACE(IOCTL, pBlob, Status, "UMCfInfoComplete:");
//
// Find the request IRP on the pending list.
//
IoAcquireCancelSpinLock(&oldIrql);
for ( pEntry = PendingIrpCfInfoList.Flink;
pEntry != &PendingIrpCfInfoList;
pEntry = pEntry->Flink ) {
pPendingIrp = CONTAINING_RECORD( pEntry, PENDING_IRP, Linkage);
if (pPendingIrp->QComp.CfInfoHandle == (GPC_HANDLE)pBlob
&&
pPendingIrp->QComp.OpCode == OpCode ) {
//
// that's the pending request
//
pIrp = pPendingIrp->Irp;
ASSERT(pIrp);
IoSetCancelRoutine(pIrp, NULL);
GpcRemoveEntryList(pEntry);
break;
} else {
pPendingIrp = NULL;
}
}
if (pPendingIrp == NULL) {
//
// No IRP, we need to queue a completion block
//
DBGPRINT(IOCTL, ("UMCfInfoComplete: No pending IRP found\n"));
TRACE(IOCTL, pBlob, Status, "UMCfInfoComplete.NoPendingIrp:");
GpcAllocFromLL(&pPendingIrp, &PendingIrpLL, PendingIrpTag);
if (pPendingIrp) {
pPendingIrp->Irp = NULL;
pPendingIrp->FileObject = pClient->pFileObject;
pPendingIrp->QComp.OpCode = OpCode;
pPendingIrp->QComp.ClientHandle = (GPC_HANDLE)pClient;
pPendingIrp->QComp.CfInfoHandle = (GPC_HANDLE)pBlob;
pPendingIrp->QComp.Status = Status;
GpcInsertTailList(&QueuedCompletionList, &pPendingIrp->Linkage);
}
IoReleaseCancelSpinLock(oldIrql);
return;
}
IoReleaseCancelSpinLock(oldIrql);
ASSERT(pPendingIrp && pIrp);
pIrpSp = IoGetCurrentIrpStackLocation(pIrp);
GpcRes = (GPC_CF_INFO_RES *)pIrp->AssociatedIrp.SystemBuffer;
DBGPRINT(IOCTL, ("UMCfInfoComplete: Pending IRP found=0x%X, Ioctl=0x%X\n",
(ULONG_PTR)pIrp,
pIrpSp->Parameters.DeviceIoControl.IoControlCode
));
TRACE(IOCTL,
pIrp,
pIrpSp->Parameters.DeviceIoControl.IoControlCode,
"UMCfInfoComplete.PendingIrp:");
switch (pIrpSp->Parameters.DeviceIoControl.IoControlCode) {
case IOCTL_GPC_ADD_CF_INFO:
ASSERT(OpCode == OP_ADD_CFINFO);
ASSERT(pBlob->State == GPC_STATE_ADD);
GpcRes->AddRes.Status = Status;
GpcRes->AddRes.ClientCtx = pClient->ClientCtx;
GpcRes->AddRes.CfInfoCtx = pBlob->OwnerClientCtx;
GpcRes->AddRes.GpcCfInfoHandle = pBlob->ClHandle;
if (Status == GPC_STATUS_SUCCESS) {
UNICODE_STRING CfInfoName;
if (pBlob->pNotifiedClient) {
GPC_STATUS st = GPC_STATUS_FAILURE;
if (pBlob->pNotifiedClient->FuncList.ClGetCfInfoName) {
ASSERT(pBlob->NotifiedClientCtx);
pBlob->pNotifiedClient->FuncList.ClGetCfInfoName(
pBlob->pNotifiedClient->ClientCtx,
pBlob->NotifiedClientCtx,
&CfInfoName
);
if (CfInfoName.Length >= MAX_STRING_LENGTH * sizeof(WCHAR))
CfInfoName.Length = (MAX_STRING_LENGTH-1) * sizeof(WCHAR);
}
if (!NT_SUCCESS(st)) {
//
// generate a default name
//
swprintf(CfInfoName.Buffer, L"Flow %08X", pBlob->NotifiedClientCtx);
CfInfoName.Length = wcslen(CfInfoName.Buffer)*sizeof(WCHAR);
}
//
// copy the instance name
//
GpcRes->AddRes.InstanceNameLength = CfInfoName.Length;
NdisMoveMemory(GpcRes->AddRes.InstanceName,
CfInfoName.Buffer,
CfInfoName.Length
);
}
}
outputBuferLength = sizeof(GPC_ADD_CF_INFO_RES);
break;
case IOCTL_GPC_MODIFY_CF_INFO:
ASSERT(OpCode == OP_MODIFY_CFINFO);
ASSERT(pBlob->State == GPC_STATE_MODIFY);
GpcRes->ModifyRes.Status = Status;
GpcRes->ModifyRes.ClientCtx = pClient->ClientCtx;
GpcRes->ModifyRes.CfInfoCtx = pBlob->OwnerClientCtx;
outputBuferLength = sizeof(GPC_MODIFY_CF_INFO_RES);
break;
case IOCTL_GPC_REMOVE_CF_INFO:
ASSERT(OpCode == OP_REMOVE_CFINFO);
ASSERT(pBlob->State == GPC_STATE_REMOVE);
GpcRes->RemoveRes.Status = Status;
GpcRes->RemoveRes.ClientCtx = pClient->ClientCtx;
GpcRes->RemoveRes.CfInfoCtx = pBlob->OwnerClientCtx;
outputBuferLength = sizeof(GPC_REMOVE_CF_INFO_RES);
break;
default:
ASSERT(0);
}
GpcFreeToLL(pPendingIrp, &PendingIrpLL, PendingIrpTag);
//
// Complete the IRP.
//
pIrp->IoStatus.Information = outputBuferLength;
pIrp->IoStatus.Status = STATUS_SUCCESS;
DBGPRINT(IOCTL, ("UMCfInfoComplete: Completing IRP =0x%X, Status=0x%X\n",
(ULONG_PTR)pIrp, Status ));
TRACE(IOCTL, pIrp, Status, "UMCfInfoComplete.Completing:");
IoCompleteRequest(pIrp, IO_NETWORK_INCREMENT);
return;
}
NTSTATUS
CheckQueuedNotification(
IN PIRP Irp,
IN OUT ULONG *outputBufferLength
)
/*++
Routine Description:
This routine will check for a queued notification structrue,
and it will fill the ioBuffer in the IRP if one has been found
and return STATUS_SUCCESS. This should cover the case where
the IRP was not available when the notification was generated.
O/w the routine returns STATUS_PENDING.
Arguments:
Irp - the incoming IRP
Return Value:
STATUS_SUCCESS or STATUS_PENDING
--*/
{
KIRQL oldIrql;
PIO_STACK_LOCATION pIrpSp;
PQUEUED_NOTIFY pQItem = NULL;
PLIST_ENTRY pEntry;
NTSTATUS Status;
PPENDING_IRP pPendingIrp;
DBGPRINT(IOCTL, ("CheckQueuedNotification: IRP =0x%X\n",
(ULONG_PTR)Irp));
TRACE(IOCTL, Irp, 0, "CheckQueuedNotification:");
if (*outputBufferLength < sizeof(GPC_NOTIFY_REQUEST_RES)) {
return STATUS_BUFFER_TOO_SMALL;
}
pIrpSp = IoGetCurrentIrpStackLocation(Irp);
IoAcquireCancelSpinLock(&oldIrql);
for ( pEntry = QueuedNotificationList.Flink;
pEntry != &QueuedNotificationList;
pEntry = pEntry->Flink ) {
pQItem = CONTAINING_RECORD( pEntry, QUEUED_NOTIFY, Linkage);
if (pQItem->FileObject == pIrpSp->FileObject) {
//
// the queued item if for this file object
//
GpcRemoveEntryList(pEntry);
break;
} else {
pQItem = NULL;
}
}
if (pQItem) {
//
// We found something on the queue, copy it to the IRP
// and delete the item
//
DBGPRINT(IOCTL, ("CheckQueuedNotification: found QItem =0x%X\n",
(ULONG_PTR)pQItem));
TRACE(IOCTL,
pQItem,
pQItem->NotifyRes.ClientCtx,
"CheckQueuedNotification.QItem:");
ASSERT(*outputBufferLength >= sizeof(GPC_NOTIFY_REQUEST_RES));
NdisMoveMemory(Irp->AssociatedIrp.SystemBuffer,
&pQItem->NotifyRes,
sizeof(GPC_NOTIFY_REQUEST_RES) );
GpcFreeToLL(pQItem, &QueuedNotificationLL, QueuedNotificationTag);
*outputBufferLength = sizeof(GPC_NOTIFY_REQUEST_RES);
Status = STATUS_SUCCESS;
} else {
DBGPRINT(IOCTL, ("CheckQueuedNotification: QItem not found...PENDING\n"
));
TRACE(IOCTL, 0, 0, "CheckQueuedNotification.NoQItem:");
GpcAllocFromLL(&pPendingIrp, &PendingIrpLL, PendingIrpTag);
if (pPendingIrp != NULL) {
//
// add the IRP on the pending notification list
//
DBGPRINT(IOCTL, ("CheckQueuedNotification: adding IRP=0x%X to list=0x%X\n",
(ULONG_PTR)Irp, (ULONG_PTR)pIrpSp ));
TRACE(IOCTL, Irp, pIrpSp, "CheckQueuedNotification.Irp:");
pPendingIrp->Irp = Irp;
pPendingIrp->FileObject = pIrpSp->FileObject;
if (!Irp->Cancel) {
IoSetCancelRoutine(Irp, CancelPendingIrpNotify);
GpcInsertTailList(&PendingIrpNotifyList, &(pPendingIrp->Linkage));
Status = STATUS_PENDING;
} else {
DBGPRINT(IOCTL, ("CheckQueuedNotification: Status Cacelled: IRP=0x%X\n",
(ULONG_PTR)Irp ));
TRACE(IOCTL, Irp, pIrpSp, "CheckQueuedNotification.Cancelled:");
GpcFreeToLL(pPendingIrp, &PendingIrpLL, PendingIrpTag);
Status = STATUS_CANCELLED;
}
} else {
Status = STATUS_INSUFFICIENT_RESOURCES;
}
*outputBufferLength = 0;
}
IoReleaseCancelSpinLock(oldIrql);
return Status;
}
NTSTATUS
CheckQueuedCompletion(
IN PQUEUED_COMPLETION pQItem,
IN PIRP Irp
)
/*++
Routine Description:
This routine will check for a queued completion structrue
with the same CfInfoHandle, and it will return it if found.
The original queued memory block is release here.
If not found, the returned status is PENDING, o/w the queued status
is returned.
Arguments:
pQItem - pass in the CfInfoHandle and ClientHandle
Return Value:
Queued status or STATUS_PENDING
--*/
{
KIRQL oldIrql;
PLIST_ENTRY pEntry;
NTSTATUS Status;
PPENDING_IRP pPendingIrp = NULL;
PIO_STACK_LOCATION irpStack;
DBGPRINT(IOCTL, ("CheckQueuedCompletion: pQItem=0x%X\n",
(ULONG_PTR)pQItem));
TRACE(IOCTL,
pQItem->OpCode,
pQItem->ClientHandle,
"CheckQueuedCompletion:");
TRACE(IOCTL,
pQItem->CfInfoHandle,
pQItem->Status,
"CheckQueuedCompletion:");
IoAcquireCancelSpinLock(&oldIrql);
for ( pEntry = QueuedCompletionList.Flink;
pEntry != &QueuedCompletionList;
pEntry = pEntry->Flink ) {
pPendingIrp = CONTAINING_RECORD( pEntry, PENDING_IRP, Linkage);
if ((pQItem->OpCode == OP_ANY_CFINFO ||
pQItem->OpCode == pPendingIrp->QComp.OpCode)
&&
pPendingIrp->QComp.ClientHandle == (PVOID)pQItem->ClientHandle
&&
pPendingIrp->QComp.CfInfoHandle == (PVOID)pQItem->CfInfoHandle) {
//
// the queued item if for this file object
// and the OpCode match
// and it has the same CfInfo memory pointer
//
GpcRemoveEntryList(pEntry);
break;
} else {
pPendingIrp = NULL;
}
}
if (pPendingIrp) {
//
// get the status and free the queued completion item
//
DBGPRINT(IOCTL, ("CheckQueuedCompletion: found pPendingIrp=0x%X, Status=0x%X\n",
(ULONG_PTR)pPendingIrp, pPendingIrp->QComp.Status));
TRACE(IOCTL,
pPendingIrp->QComp.OpCode,
pPendingIrp->QComp.ClientHandle,
"CheckQueuedCompletion.Q:");
TRACE(IOCTL,
pPendingIrp->QComp.CfInfoHandle,
pPendingIrp->QComp.Status,
"CheckQueuedCompletion.Q:");
#if DBG
if (pQItem->OpCode != OP_ANY_CFINFO) {
ASSERT(pPendingIrp->QComp.OpCode == pQItem->OpCode);
ASSERT(pPendingIrp->QComp.ClientHandle == pQItem->ClientHandle);
}
#endif
Status = pPendingIrp->QComp.Status;
GpcFreeToLL(pPendingIrp, &PendingIrpLL, PendingIrpTag);
} else {
DBGPRINT(IOCTL, ("CheckQueuedCompletion: pPendingIrp not found...PENDING\n"
));
TRACE(IOCTL, 0, 0, "CheckQueuedCompletion.NopQ:");
GpcAllocFromLL(&pPendingIrp, &PendingIrpLL, PendingIrpTag);
if (pPendingIrp != NULL) {
//
// add the IRP on the pending CfInfo list
//
irpStack = IoGetCurrentIrpStackLocation(Irp);
DBGPRINT(IOCTL, ("CheckQueuedCompletion: adding IRP=0x%X\n",
(ULONG_PTR)Irp ));
TRACE(IOCTL, Irp, irpStack, "CheckQueuedCompletion.Irp:");
pPendingIrp->Irp = Irp;
pPendingIrp->FileObject = irpStack->FileObject;
pPendingIrp->QComp.OpCode = pQItem->OpCode;
pPendingIrp->QComp.ClientHandle = pQItem->ClientHandle;
pPendingIrp->QComp.CfInfoHandle = pQItem->CfInfoHandle;
pPendingIrp->QComp.Status = pQItem->Status;
if (!Irp->Cancel) {
IoSetCancelRoutine(Irp, CancelPendingIrpCfInfo);
GpcInsertTailList(&PendingIrpCfInfoList, &(pPendingIrp->Linkage));
Status = STATUS_PENDING;
} else {
DBGPRINT(IOCTL, ("CheckQueuedCompletion: Status Cacelled: IRP=0x%X\n",
(ULONG_PTR)Irp ));
TRACE(IOCTL, Irp, irpStack, "CheckQueuedCompletion.Cancelled:");
GpcFreeToLL(pPendingIrp, &PendingIrpLL, PendingIrpTag);
Status = STATUS_CANCELLED;
}
} else {
Status = STATUS_INSUFFICIENT_RESOURCES;
}
}
IoReleaseCancelSpinLock(oldIrql);
return Status;
}
// Function : GpcValidateClientOwner
//
// Description:
// Validates that the user mode calling an irp owns the client in
// question.
//
//Arguments:
// GpcClientHandle: Object obtained from client handle.
// In effect pointer to CLIENT_BLOCK
//
//Returns:
// Returns GPC_STATUS_SUCCESS if the given client is owned by the file object
// Returns GPC_STATUS_INVALID_HANDLE otherwise
//
//Environment:
// Called to validate client ownership of CLIENT_BLOCK from the
// proxyGpc* functions . No locks held
//
NTSTATUS
GpcValidateClientOwner (
IN GPC_HANDLE GpcClientHandle,
IN PFILE_OBJECT pFile
)
{
PCLIENT_BLOCK pClient;
NTSTATUS Status = GPC_STATUS_SUCCESS;
pClient = (PCLIENT_BLOCK) GpcClientHandle;
NDIS_LOCK(&pClient->Lock);
if (pClient->pFileObject != pFile)
{
Status = GPC_STATUS_INVALID_HANDLE;
}
NDIS_UNLOCK(&pClient->Lock);
return Status;
}
// Function : GpcValidatePatternOwner
//
// Description:
// Validates that the user mode client owns the Pattern in
// question.
//
//Arguments:
// GpcClientHandle: Object obtained from client handle.
// In effect pointer to CLIENT_BLOCK
// GpcPatternHandle: Object Obtained from Pattern Handle
// In effect pointer to the PATTERN_BLOCK
//Returns:
// Returns GPC_STATUS_SUCCESS if the specified client owns the
// specified Pattern.
// Returns GPC_STATUS_ACCESS_DENIED otherwise
//
//Environment:
// Called to validate client ownership of PATTERN_BLOCK from the
// proxyGpc* functions .
//
NTSTATUS
GpcValidatePatternOwner (
IN GPC_HANDLE GpcClientHandle,
IN GPC_HANDLE GpcPatternHandle
)
{
PCLIENT_BLOCK pClient;
PPATTERN_BLOCK pPattern;
NTSTATUS Status = GPC_STATUS_SUCCESS;
pClient = (PCLIENT_BLOCK) GpcClientHandle;
pPattern = (PPATTERN_BLOCK)GpcPatternHandle;
if (pClient != pPattern->pClientBlock )
{
Status = GPC_STATUS_INVALID_HANDLE;
}
return Status;
}
// Function : GpcValidateCfinfoOwner
//
// Description:
// Validates that the user mode client owns the BLOB in
// question.
//
//Arguments:
// GpcClientHandle: Object obtained from client handle.
// In effect pointer to CLIENT_BLOCK
// GpcCfinfoHandle: Object Obtained from Pattern Handle
// In effect pointer to the PATTERN_BLOCK
//Returns:
// Returns GPC_STATUS_SUCCESS if the specified client owns the
// specified Cfinfo - BLOB_BLOCK.
// Returns GPC_STATUS_ACCESS_DENIED otherwise
//
//Environment:
// Called to validate client ownership of BLOB_BLOCK from the
// proxyGpc* functions .
//
NTSTATUS
GpcValidateCfinfoOwner (
IN GPC_HANDLE GpcClientHandle,
IN GPC_HANDLE GpcCfInfoHandle
)
{
PCLIENT_BLOCK pClient;
PBLOB_BLOCK pBlob;
NTSTATUS Status = GPC_STATUS_SUCCESS;
pClient = (PCLIENT_BLOCK) GpcClientHandle;
pBlob = (PBLOB_BLOCK)GpcCfInfoHandle;
if (pClient != pBlob->pOwnerClient)
{
Status = GPC_STATUS_INVALID_HANDLE;
}
return Status;
}
/* end ioctl.c */