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driver.c
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driver.c
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/*
* Copyright (c) 2004 Security Architects Corporation. All rights reserved.
*
* Module Name:
*
* driver.c
*
* Abstract:
*
* This module implements all the device driver "plumbing" (DriverEntry, etc).
*
* Author:
*
* Eugene Tsyrklevich 9-Feb-2004
*
* Revision History:
*
* None.
*/
#include <NTDDK.h>
#include <devioctl.h>
#include "driver.h"
//#include "eugene.h"
#include "file.h"
#include "registry.h"
#include "sysinfo.h"
#include "policy.h"
#include "process.h"
#include "learn.h"
#include "event.h"
#include "semaphore.h"
#include "dirobj.h"
#include "symlink.h"
#include "mutant.h"
#include "port.h"
#include "timer.h"
#include "token.h"
#include "job.h"
#include "driverobj.h"
#include "network.h"
#include "section.h"
#include "atom.h"
#include "time.h"
#include "vdm.h"
#include "procname.h"
#include "userland.h"
#include "media.h"
#include "boprot.h"
#include "debug.h"
#include "i386.h"
#include "misc.h"
#include "log.h"
LONG SysenterEip = 0;
__declspec(naked)
VOID
SysenterHandler()
{
_asm and ecx, 0x000000FF
_asm sub esp, ecx
_asm jmp [SysenterEip]
}
VOID
blah()
{
LONG c, s;
#define SYSENTER_CS_MSR 0x174
#define SYSENTER_ESP_MSR 0x175
#define SYSENTER_EIP_MSR 0x176
_asm
{
mov ecx, SYSENTER_CS_MSR
rdmsr
mov c, eax
mov ecx, SYSENTER_ESP_MSR
rdmsr
mov s, eax
mov ecx, SYSENTER_EIP_MSR
rdmsr
mov SysenterEip, eax
mov eax, SysenterHandler
wrmsr
}
KdPrint(("old eip=%x:%x (%x), new eip=%x\n", c, SysenterEip, s, SysenterHandler));
}
/*
* DriverEntry()
*
* Description:
* Driver entry point.
*
* Parameters:
* pDriverObject - pointer to an initialized driver object that represents our driver
* pRegistryPath - name of the service key in the registry
*
* Returns:
* STATUS_SUCCESS to indicate success or an error code to indicate an error.
*/
/* macro shortcut for bailing out of DriverEntry in case of an error */
#define ABORT_DriverEntry(msg) \
{ \
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_CRITICAL, (msg)); \
if (irql != PASSIVE_LEVEL) KeLowerIrql(irql); \
DriverUnload(pDriverObject); \
return status; \
}
/*
PVOID Find_Kernel32_Base();
NTSTATUS
NTAPI
ZwCreateSymbolicLinkObject(
OUT PHANDLE SymbolicLinkHandle,
IN ACCESS_MASK DesiredAccess,
IN POBJECT_ATTRIBUTES ObjectAttributes,
IN PUNICODE_STRING TargetName
);
HANDLE h;
*/
NTSTATUS
DriverEntry(IN PDRIVER_OBJECT pDriverObject, IN PUNICODE_STRING pRegistryPath)
{
UNICODE_STRING usDeviceName, usSymLinkName;
PDEVICE_OBJECT pDeviceObject;
PDEVICE_EXTENSION pDeviceExtension;
NTSTATUS status;
KIRQL irql = KeGetCurrentIrql();
int i;
/*
{
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING dest, target;
NTSTATUS status;
RtlInitUnicodeString(&dest, L"\\??\\MyRegistryMachine");
RtlInitUnicodeString(&target, L"\\Registry\\Machine");
InitializeObjectAttributes(&ObjectAttributes, &dest, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL);
status = ZwCreateSymbolicLinkObject(&h, SYMBOLIC_LINK_ALL_ACCESS, &ObjectAttributes, &target);
if (! NT_SUCCESS(status))
{
KdPrint(("failed, status %x\n", status));
}
else
{
KdPrint(("link ok\n"));
}
// return STATUS_UNSUCCESSFUL;
}
*/
//XXX add pRegistryPath to deny registry access rule?!
__try
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverEntry: Entered (%x %S)\n", pDriverObject, pRegistryPath->Buffer));
// blah();
// KdPrint(("after blah\n"));
/*
* Verify we are running on x86 & everything is in order
*/
if (!InitI386())
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_CRITICAL, ("InitI386 failed. Aborting.\n"));
return STATUS_UNSUCCESSFUL;
}
/*
* Initialize all the driver object related data and create a device representing our device
*/
// set to NULL to disable unload by admins
// pDriverObject->DriverUnload = NULL;
pDriverObject->DriverUnload = DriverUnload;
//XXX need to intercept DriverObject->FastIoDispatch = &VTrcFSFastIoDispatchTable;
for (i = 0; i < IRP_MJ_MAXIMUM_FUNCTION; i++)
//XXX don't intercept IRP_MJ_POWER & IRP_MJ_PNP
pDriverObject->MajorFunction[i] = DriverDeviceControl;
pDriverObject->MajorFunction[ IRP_MJ_CREATE ] = DriverCreate;
pDriverObject->MajorFunction[ IRP_MJ_CLEANUP ] = DriverCleanup;
pDriverObject->MajorFunction[ IRP_MJ_CLOSE ] = DriverClose;
pDriverObject->MajorFunction[ IRP_MJ_DEVICE_CONTROL ] = DriverDeviceControl;
/*
pDriverObject->MajorFunction[ IRP_MJ_READ ] = DriverRead;
pDriverObject->MajorFunction[ IRP_MJ_WRITE ] = DriverWrite;
*/
RtlInitUnicodeString(&usDeviceName, DEVICE_NAME);
status = IoCreateDevice(pDriverObject, sizeof(DEVICE_EXTENSION),
&usDeviceName, FILE_DEVICE_UNKNOWN,
FILE_DEVICE_SECURE_OPEN, FALSE,//FALSE (Exclusive - Reserved for system use. Drivers set this parameter to FALSE.)
// 0, TRUE,
&pDeviceObject);
if (!NT_SUCCESS(status))
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverEntry: IoCreateDevice failed with status %x\n", status));
return status;
}
pDeviceObject->Flags |= DO_BUFFERED_IO;
pDeviceExtension = (PDEVICE_EXTENSION) pDeviceObject->DeviceExtension;
pDeviceExtension->pDeviceObject = pDeviceObject;
RtlInitUnicodeString(&pDeviceExtension->usSymLink, DEVICE_SYMLINK_NAME);
status = IoCreateSymbolicLink(&pDeviceExtension->usSymLink, &usDeviceName);
if (!NT_SUCCESS(status))
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverEntry: IoCreateSymbolicLink failed with status %x\n", status));
IoDeleteDevice(pDeviceObject);
return status;
}
/*
* Now, mediate all the necessary calls
*/
#if HOOK_NETWORK
status = InstallNetworkHooks(pDriverObject);
if (! NT_SUCCESS(status))
ABORT_DriverEntry("InstallNetworkHooks() failed");
#endif
/* all consequitive calls that fail will cause the following error to be returned */
status = STATUS_DRIVER_INTERNAL_ERROR;
if (!InitSyscallsHooks())
ABORT_DriverEntry("InitSyscallsHooks() failed\n");
/*
* raise irql to DPC level to avoid any spurious system calls taking place before we
* manage to initialize appropriate hooked function pointers
*/
irql = KeRaiseIrqlToDpcLevel();
if (!InstallSyscallsHooks())
ABORT_DriverEntry("InstallSyscallsHooks() failed\n");
#if HOOK_FILE
if (!InitFileHooks())
ABORT_DriverEntry("InitFileHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitFileHooks\n"));
#endif
#if HOOK_REGISTRY
if (!InitRegistryHooks())
ABORT_DriverEntry("InitRegistryHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitRegistryHooks\n"));
#endif
#if HOOK_SECTION
if (!InitSectionHooks())
ABORT_DriverEntry("InitSectionHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitSectionHooks\n"));
#endif
#if HOOK_SYSINFO
if (!InitSysInfoHooks())
ABORT_DriverEntry("InitSysInfoHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitSysInfoHooks\n"));
#endif
#if HOOK_EVENT
if (!InitEventHooks())
ABORT_DriverEntry("InitEventHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitEventHooks\n"));
#endif
#if HOOK_SEMAPHORE
if (!InitSemaphoreHooks())
ABORT_DriverEntry("InitSemaphoreHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitSemaphoreHooks\n"));
#endif
#if HOOK_JOB
if (!InitJobHooks())
ABORT_DriverEntry("InitJobHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitJobHooks\n"));
#endif
#if HOOK_MUTANT
if (!InitMutantHooks())
ABORT_DriverEntry("InitMutantHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitMutantHooks\n"));
#endif
#if HOOK_DIROBJ
if (!InitDirobjHooks())
ABORT_DriverEntry("InitDirobjHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitDirobjHooks\n"));
#endif
#if HOOK_PORT
if (!InitPortHooks())
ABORT_DriverEntry("InitPortHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitPortHooks\n"));
#endif
#if HOOK_SYMLINK
if (!InitSymlinkHooks())
ABORT_DriverEntry("InitSymlinkHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitSymlinkHooks\n"));
#endif
#if HOOK_TIMER
if (!InitTimerHooks())
ABORT_DriverEntry("InitTimerHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitTimerHooks\n"));
#endif
#if HOOK_TOKEN
if (!InitTokenHooks())
ABORT_DriverEntry("InitTokenHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitTokenHooks\n"));
#endif
#if HOOK_TIME
if (!InitTimeHooks())
ABORT_DriverEntry("InitTimeHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitTimeHooks\n"));
#endif
#if HOOK_DRIVEROBJ
if (!InitDriverObjectHooks())
ABORT_DriverEntry("InitDriverObjectHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitDriverObjectHooks\n"));
#endif
#if HOOK_ATOM
if (!InitAtomHooks())
ABORT_DriverEntry("InitAtomHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitAtomHooks\n"));
#endif
#if HOOK_VDM
if (!InitVdmHooks())
ABORT_DriverEntry("InitVdmHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitVdmHooks\n"));
#endif
#if HOOK_DEBUG
if (!InitDebugHooks())
ABORT_DriverEntry("InitDebugHooks() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitDebugHooks\n"));
#endif
KeLowerIrql(irql);
/*
* The order of the following calls is important:
*
* InitProcessEntries() initializes OzoneInstallPath
* InitPolicy() initiailizes policy related variables
* InitProcessNameEntries() then uses policy vars & OzoneInstallPath to load policies
*/
#if HOOK_PROCESS
if (!InitProcessEntries())
ABORT_DriverEntry("InitProcessEntries() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitProcessEntries\n"));
#endif
if (!InitProcessNameEntries())
ABORT_DriverEntry("InitProcessNameEntries() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitProcessNameEntries\n"));
if (!InitPolicy())
ABORT_DriverEntry("InitPolicy() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitPolicy\n"));
EnumerateExistingProcesses();
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past EnumerateExistingProcesses\n"));
if (LearningMode == TRUE)
{
if (!InitLearningMode())
ABORT_DriverEntry("InitLearningMode() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitLearningMode\n"));
}
#if HOOK_MEDIA
if (!InitRemovableMediaHooks(pDriverObject, pDeviceObject))
ABORT_DriverEntry("InitRemovableMedia() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitRemovableMediaHooks\n"));
#endif
#if HOOK_BOPROT
if (!InitBufferOverflowProtection())
ABORT_DriverEntry("InitBufferOverflowProtection() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitBufferOverflowProtection\n"));
#endif
if (!InitLog())
ABORT_DriverEntry("InitLog() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitLog\n"));
if (!InitUserland())
ABORT_DriverEntry("InitUserland() failed\n");
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverEntry: Past InitUserland\n"));
} // __try
__except(EXCEPTION_EXECUTE_HANDLER)
{
NTSTATUS status = GetExceptionCode();
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_CRITICAL, ("DriverEntry: caught an exception. status = 0x%x\n", status));
return STATUS_DRIVER_INTERNAL_ERROR;
}
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverEntry: Done\n"));
return STATUS_SUCCESS;
}
/*
* DriverUnload()
*
* Description:
* Clean up and unload the driver.
*
* NOTE: Since this driver mediates system calls and other devices, it is not safe to
* unload the driver since there might remain outstanding references to our driver code and data
* segments once the driver is unloaded.
*
* NOTE2: In release builds, unload functionality should be disabled for security reasons.
*
* Parameters:
* pDriverObject - pointer to a driver object that represents this driver.
*
* Returns:
* Nothing.
*/
VOID
DriverUnload(IN PDRIVER_OBJECT pDriverObject)
{
PDEVICE_OBJECT pDeviceObject, pNextDeviceObject;
PDEVICE_EXTENSION pDeviceExtension;
LARGE_INTEGER delay;
#if DBG
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverUnload: irql = %d %d\n", KeGetCurrentIrql(), HookedTDIRunning));
#endif
if (SysenterEip)
_asm
{
mov ecx, SYSENTER_EIP_MSR
mov eax, SysenterEip
xor edx, edx
wrmsr
}
#if HOOK_BOPROT
ShutdownBufferOverflowProtection();
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverUnload: Past ShutdownBufferOverflowProtection\n"));
#endif
RemoveRemovableMediaHooks();
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverUnload: Past RemoveRemovableMediaHooks\n"));
RemoveNetworkHooks(pDriverObject);
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverUnload: Past RemoveNetworkHooks\n"));
RemoveSyscallsHooks();
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverUnload: Past RemoveSyscallsHooks\n"));
RemoveProcessNameEntries();
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverUnload: Past RemoveProcessNameEntries\n"));
if (LearningMode)
ShutdownLearningMode();
else
PolicyRemove();
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverUnload: Past LearningMode\n"));
ShutdownLog();
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverUnload: Past ShutdownLog\n"));
ShutdownUserland();
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverUnload: Past UserlandShutdown\n"));
pDeviceObject = pNextDeviceObject = pDriverObject->DeviceObject;
while (pNextDeviceObject != NULL)
{
pNextDeviceObject = pDeviceObject->NextDevice;
pDeviceExtension = (PDEVICE_EXTENSION) pDeviceObject->DeviceExtension;
if (pDeviceExtension)
{
NTSTATUS status;
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverUnload: IoDeleteSymbolicLink(%S)\n", pDeviceExtension->usSymLink.Buffer));
status = IoDeleteSymbolicLink(&pDeviceExtension->usSymLink);
if (! NT_SUCCESS(status))
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverUnload: IoDeleteSymbolicLink failed: %x\n", status));
}
else
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverUnload: pDeviceExtension = NULL\n"));
IoDeleteDevice(pDeviceObject);
pDeviceObject = pNextDeviceObject;
}
/* wait for 1 second for all timers/callbacks to complete */
delay.QuadPart = SECONDS(1);
KeDelayExecutionThread(KernelMode, FALSE, &delay);
#if DBG
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverUnload: HookedRoutineRunning = %d\n", HookedRoutineRunning));
#endif
return;
}
/*
* DriverDeviceControl()
*
* Description:
* Dispatch routine. Process network (TDI) and our driver requests.
*
* Parameters:
* pDeviceObject - pointer to a device object that a request is being sent to.
* pIrp - IRP (I/O Request Packet) request.
*
* Returns:
* Nothing.
*/
#define COMPLETE_REQUEST(irp, status) \
pIrp->IoStatus.Status = (status); \
IoCompleteRequest((irp), IO_NO_INCREMENT); \
return((status));
NTSTATUS
DriverDeviceControl(IN PDEVICE_OBJECT pDeviceObject, IN PIRP pIrp)
{
PIO_STACK_LOCATION pIrpStack;
ULONG ControlCode;
NTSTATUS status;
ULONG InSize, OutSize;
KIRQL irql;
if (pDeviceObject == NULL || pIrp == NULL)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: NULL value %x %x\n", pDeviceObject, pIrp));
COMPLETE_REQUEST(pIrp, STATUS_UNSUCCESSFUL);
}
#if HOOK_NETWORK
if (TDIDispatch(pDeviceObject, pIrp, &status) == TRUE)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverDeviceControl(%x, %x): TDIDispatch\n", pDeviceObject, pIrp));
return status;
}
#endif
pIrpStack = IoGetCurrentIrpStackLocation(pIrp);
pIrp->IoStatus.Information = 0;
ControlCode = pIrpStack->Parameters.DeviceIoControl.IoControlCode;
InSize = pIrpStack->Parameters.DeviceIoControl.InputBufferLength;
OutSize = pIrpStack->Parameters.DeviceIoControl.OutputBufferLength;
switch (ControlCode)
{
/*
* When userland agent service starts up, it registers with the driver using IOCTL_REGISTER_AGENT_SERVICE.
* Expects back 1 ULONG - version of the driver
*/
// XXX save agent pid and version?
case IOCTL_REGISTER_AGENT_SERVICE:
{
ULONG DriverVersion = DRIVER_VERSION;
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_REGISTER_AGENT_SERVICE ControlCode=%x InBufferSize=%x OutBufferSize=%x\n", ControlCode, InSize, OutSize));
if (OutSize < sizeof(ULONG))
{
status = STATUS_INVALID_BUFFER_SIZE;
break;
}
RtlCopyMemory(pIrp->AssociatedIrp.SystemBuffer, &DriverVersion, sizeof(ULONG));
ActiveUserAgent = TRUE;
pIrp->IoStatus.Information = sizeof(ULONG);
status = STATUS_SUCCESS;
break;
}
/*
* Userland agent service retrieves log alerts using IOCTL_GET_ALERT
*/
case IOCTL_GET_ALERT:
{
PSECURITY_ALERT TmpAlert;
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_GET_ALERT ControlCode=%x InBufferSize=%x OutBufferSize=%x\n", ControlCode, InSize, OutSize));
// if (UserAgentRegistered == FALSE)
// XXX;
KeAcquireSpinLock(&gLogSpinLock, &irql);
{
if (LogList == NULL)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_GET_ALERT No More Alerts\n"));
status = STATUS_NO_MORE_ENTRIES;
KeReleaseSpinLock(&gLogSpinLock, irql);
break;
}
/* don't count the size of the Next pointer */
LogList->Size -= sizeof(struct _SECURITY_ALERT *);
if (OutSize < LogList->Size)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_GET_ALERT %d < %d\n", OutSize, LogList->Size));
status = STATUS_INVALID_BUFFER_SIZE;
KeReleaseSpinLock(&gLogSpinLock, irql);
break;
}
/* copy the SECURITY_ALERT structure without including the Next pointer */
RtlCopyMemory(pIrp->AssociatedIrp.SystemBuffer, (PCHAR)LogList + sizeof(struct _SECURITY_ALERT *), LogList->Size);
pIrp->IoStatus.Information = LogList->Size;
--NumberOfAlerts;
TmpAlert = LogList;
LogList = LogList->Next;
ExFreePoolWithTag(TmpAlert, _POOL_TAG);
}
KeReleaseSpinLock(&gLogSpinLock, irql);
status = STATUS_SUCCESS;
break;
}
/*
* Userland agent service retrieves userland requests using IOCTL_GET_USERLAND_REQUEST
*/
case IOCTL_GET_USERLAND_REQUEST:
{
PUSERLAND_REQUEST_HEADER TmpRequest;
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_GET_USERLAND_REQUEST ControlCode=%x InBufferSize=%x OutBufferSize=%x\n", ControlCode, InSize, OutSize));
KeAcquireSpinLock(&gUserlandRequestListSpinLock, &irql);
{
USHORT UserlandRequestSize;
if (UserlandRequestList == NULL)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_GET_USERLAND_REQUEST No More Process Requests\n"));
status = STATUS_NO_MORE_ENTRIES;
KeReleaseSpinLock(&gUserlandRequestListSpinLock, irql);
break;
}
/* don't count the size of the Next pointer */
UserlandRequestSize = UserlandRequestList->RequestSize - sizeof(struct _USERLAND_REQUEST *);
if (OutSize < UserlandRequestSize)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_GET_USERLAND_REQUEST %d < %d\n", OutSize, UserlandRequestSize));
KeReleaseSpinLock(&gUserlandRequestListSpinLock, irql);
status = STATUS_INVALID_BUFFER_SIZE;
break;
}
/* copy the PROCESS_REQUEST structure without including the Next pointer */
RtlCopyMemory(pIrp->AssociatedIrp.SystemBuffer, (PCHAR)UserlandRequestList + sizeof(struct _USERLAND_REQUEST *), UserlandRequestSize);
pIrp->IoStatus.Information = UserlandRequestSize;
TmpRequest = UserlandRequestList;
UserlandRequestList = UserlandRequestList->Next;
ExFreePoolWithTag(TmpRequest, _POOL_TAG);
}
KeReleaseSpinLock(&gUserlandRequestListSpinLock, irql);
status = STATUS_SUCCESS;
break;
}
/*
* Userland agent service returns userland replies using IOCTL_SEND_USERLAND_SID_RESOLVE_REPLY
*/
#define MAXIMUM_USERLAND_REPLY_SIZE 512
case IOCTL_SEND_USERLAND_SID_RESOLVE_REPLY:
{
PSID_RESOLVE_REPLY pSidResolveReply;
PIMAGE_PID_ENTRY ProcessEntry;
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_SEND_USERLAND_SID_RESOLVE_REPLY ControlCode=%x InBufferSize=%x OutBufferSize=%x\n", ControlCode, InSize, OutSize));
if (InSize > MAXIMUM_USERLAND_REPLY_SIZE)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_SEND_USERLAND_SID_RESOLVE_REPLY %d > %d\n", InSize, MAXIMUM_USERLAND_REPLY_SIZE));
status = STATUS_INVALID_BUFFER_SIZE;
break;
}
pSidResolveReply = ExAllocatePoolWithTag(PagedPool, InSize, _POOL_TAG);
if (pSidResolveReply == NULL)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_SEND_USERLAND_SID_RESOLVE_REPLY out of memory\n"));
status = STATUS_UNSUCCESSFUL;
break;
}
RtlCopyMemory(pSidResolveReply, pIrp->AssociatedIrp.SystemBuffer, InSize);
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: Received sid resolve reply. insize=%d seq=%d, %S\n", InSize, pSidResolveReply->ReplyHeader.SeqId, pSidResolveReply->UserName));
ProcessEntry = FindImagePidEntry(pSidResolveReply->ReplyHeader.ProcessId, 0);
if (ProcessEntry)
{
if (ProcessEntry->WaitingForUserRequestId == 0)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: Process (pid=%d) is not expecting a user request!\n", pSidResolveReply->ReplyHeader.ProcessId));
ExFreePoolWithTag(pSidResolveReply, _POOL_TAG);
ProcessEntry->UserlandReply = NULL;
break;
}
if (ProcessEntry->WaitingForUserRequestId != pSidResolveReply->ReplyHeader.SeqId)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: Process (pid=%d) is expecting to receive sequence id %d. Got %d\n", pSidResolveReply->ReplyHeader.ProcessId, ProcessEntry->WaitingForUserRequestId, pSidResolveReply->ReplyHeader.SeqId));
ExFreePoolWithTag(pSidResolveReply, _POOL_TAG);
ProcessEntry->UserlandReply = NULL;
break;
}
/* deliver the reply */
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: Waking up process %d\n", pSidResolveReply->ReplyHeader.ProcessId));
ProcessEntry->UserlandReply = (PUSERLAND_REPLY_HEADER) pSidResolveReply;
KeSetEvent(&ProcessEntry->UserlandRequestDoneEvent, IO_NO_INCREMENT, FALSE);
}
else
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: cannot find process with pid=%d\n", pSidResolveReply->ReplyHeader.ProcessId));
status = STATUS_SUCCESS;
break;
}
/*
* Userland agent service returns "ask user" replies using IOCTL_SEND_USERLAND_ASK_USER_REPLY
*/
case IOCTL_SEND_USERLAND_ASK_USER_REPLY:
{
PASK_USER_REPLY pAskUserReply;
PIMAGE_PID_ENTRY ProcessEntry;
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_SEND_USERLAND_ASK_USER_REPLY ControlCode=%x InBufferSize=%x OutBufferSize=%x\n", ControlCode, InSize, OutSize));
if (InSize != sizeof(ASK_USER_REPLY))
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_SEND_USERLAND_ASK_USER_REPLY %d != %d\n", InSize, sizeof(ASK_USER_REPLY)));
status = STATUS_INVALID_BUFFER_SIZE;
break;
}
pAskUserReply = ExAllocatePoolWithTag(PagedPool, sizeof(ASK_USER_REPLY), _POOL_TAG);
if (pAskUserReply == NULL)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_SEND_USERLAND_ASK_USER_REPLY out of memory\n"));
status = STATUS_UNSUCCESSFUL;
break;
}
RtlCopyMemory(pAskUserReply, pIrp->AssociatedIrp.SystemBuffer, InSize);
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: Received ask user reply. insize=%d, action=%d\n", InSize, pAskUserReply->Action));
ProcessEntry = FindImagePidEntry(pAskUserReply->ReplyHeader.ProcessId, 0);
if (ProcessEntry)
{
if (ProcessEntry->WaitingForUserRequestId == 0)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: Process (pid=%d) is not expecting a user request!\n", pAskUserReply->ReplyHeader.ProcessId));
ExFreePoolWithTag(pAskUserReply, _POOL_TAG);
ProcessEntry->UserlandReply = NULL;
break;
}
if (ProcessEntry->WaitingForUserRequestId != pAskUserReply->ReplyHeader.SeqId)
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: Process (pid=%d) is expecting to receive sequence id %d. Got %d\n", pAskUserReply->ReplyHeader.ProcessId, ProcessEntry->WaitingForUserRequestId, pAskUserReply->ReplyHeader.SeqId));
ExFreePoolWithTag(pAskUserReply, _POOL_TAG);
ProcessEntry->UserlandReply = NULL;
break;
}
/* deliver the reply */
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: Waking up process %d\n", pAskUserReply->ReplyHeader.ProcessId));
ProcessEntry->UserlandReply = (PUSERLAND_REPLY_HEADER) pAskUserReply;
KeSetEvent(&ProcessEntry->UserlandRequestDoneEvent, IO_NO_INCREMENT, FALSE);
}
else
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("cannot find process with pid=%d\n", pAskUserReply->ReplyHeader.ProcessId));
status = STATUS_SUCCESS;
break;
}
/*
* train.exe puts the driver in learning/training mode using IOCTL_START_CREATE_POLICY
*/
case IOCTL_START_CREATE_POLICY:
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_VERBOSE, ("DriverDeviceControl: IOCTL_START_CREATE_POLICY ControlCode=%x InBufferSize=%x OutBufferSize=%x\n", ControlCode, InSize, OutSize));
if ((InSize > MAX_PROCESS_NAME * sizeof(WCHAR)) || (InSize % 2))
{
LOG(LOG_SS_DRIVER_INTERNAL, LOG_PRIORITY_DEBUG, ("DriverDeviceControl: IOCTL_START_CREATE_POLICY Invalid Insize: %d\n", InSize));
status = STATUS_INVALID_BUFFER_SIZE;
break;
}