672 lines
13 KiB
C
672 lines
13 KiB
C
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/*++
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Copyright (c) 1999-2000 Microsoft Corporation
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Module Name:
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wow64ipc.c
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Abstract:
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This module will do the communication machanism among different processes that need
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to interact with the wow64 services, like winlogon will notify wow64svc.
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Author:
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ATM Shafiqul Khalid (askhalid) 22-Mar-2000
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Revision History:
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--*/
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#include <windows.h>
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#include <memory.h>
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#include <wow64reg.h>
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#include <stdio.h>
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#include "reflectr.h"
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#define SHMEMSIZE 4096
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LPVOID lpvMem = NULL; // pointer to shared memory
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HANDLE hMapObject = NULL;
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HANDLE hWow64Event = NULL;
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HANDLE hWow64Mutex = NULL;
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LIST_OBJECT *pList = NULL;
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//SECURITY_DESCRIPTOR sdWow64SharedMemory;
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//SECURITY_ATTRIBUTES saWow64SharedMemory;
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BOOL
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Wow64CreateLock (
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DWORD dwOption
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)
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/*++
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Routine Description:
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Create or open Event wow64 service need to check.
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Arguments:
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dwOption -
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OPEN_EXISTING_SHARED_MEMORY -- shouldn't be the first process to create this.
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Return Value:
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TRUE if the function has successfully created/opened the memory.
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FALSE otherwise.
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--*/
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{
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hWow64Mutex = CreateMutex(
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NULL, // SD
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FALSE,// initial owner
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WOW64_SVC_REFLECTOR_MUTEX_NAME // object name
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);
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if ( hWow64Mutex == NULL )
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return FALSE;
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if ( GetLastError() != ERROR_ALREADY_EXISTS && dwOption == OPEN_EXISTING_SHARED_RESOURCES) {
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Wow64CloseLock ();
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return FALSE;
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}
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return TRUE;
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}
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VOID
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Wow64CloseLock ()
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/*++
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Routine Description:
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Close wow64 service event.
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Arguments:
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None.
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Return Value:
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None.
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--*/
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{
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if ( NULL != hWow64Mutex )
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CloseHandle ( hWow64Mutex );
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hWow64Mutex = NULL;
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}
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Wow64CreateEvent (
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DWORD dwOption,
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HANDLE *hEvent
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)
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/*++
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Routine Description:
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Create or open Event wow64 service need to check.
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Arguments:
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dwOption -
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OPEN_EXISTING_SHARED_MEMORY -- shouldn't be the first process to create this.
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Return Value:
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TRUE if the function has successfully created/opened the memory.
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FALSE otherwise.
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--*/
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{
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*hEvent = NULL;
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hWow64Event = CreateEvent(
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NULL, // SD
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TRUE, // reset type
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FALSE,// initial state
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WOW64_SVC_REFLECTOR_EVENT_NAME // object name
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);
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if ( hWow64Event == NULL )
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return FALSE;
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if ( GetLastError() != ERROR_ALREADY_EXISTS && dwOption == OPEN_EXISTING_SHARED_RESOURCES) {
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Wow64CloseEvent ();
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return FALSE;
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}
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*hEvent = hWow64Event;
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return TRUE;
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}
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VOID
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Wow64CloseEvent ()
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/*++
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Routine Description:
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Close wow64 service event.
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Arguments:
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None.
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Return Value:
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None.
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--*/
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{
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if ( NULL != hWow64Event )
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CloseHandle ( hWow64Event );
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hWow64Event = NULL;
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}
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BOOL
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LockSharedMemory ()
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{
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DWORD Ret;
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Ret = WaitForSingleObject( hWow64Mutex, 1000*5*60); // 5 min is good enough
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//
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// now you can access shared memory
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//
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//Log information if error occur
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if ( Ret == WAIT_OBJECT_0 || Ret == WAIT_ABANDONED )
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return TRUE;
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//
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// check for abandaned case
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//
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return FALSE;
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}
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BOOL
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UnLockSharedMemory ()
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{
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if ( ReleaseMutex ( hWow64Mutex ) )
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return TRUE;
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return FALSE;
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}
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BOOL
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CreateSharedMemory (
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DWORD dwOption
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)
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/*++
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Routine Description:
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Create or open shared memory, used by different process.
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Arguments:
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dwOption -
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OPEN_EXISTING_SHARED_MEMORY -- shouldn't be the first process to create this.
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Return Value:
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TRUE if the function has successfully created/opened the memory.
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FALSE otherwise.
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--*/
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{
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BOOL fInit;
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//if (!InitializeSecurityDescriptor( &sdWow64SharedMemory, SECURITY_DESCRIPTOR_REVISION ))
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// return FALSE;
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// saWow64SharedMemory.nLength = sizeof ( SECURITY_ATTRIBUTES );
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// saWow64SharedMemory.bInheritHandle = TRUE;
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// saWow64SharedMemory.lpSecurityDescriptor = &sdWow64SharedMemory;
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// Create a named file mapping object.
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hMapObject = CreateFileMapping(
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INVALID_HANDLE_VALUE, // use paging file
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NULL, //&saWow64SharedMemory, // no security attributes
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PAGE_READWRITE, // read/write access
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0, // size: high 32-bits
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SHMEMSIZE, // size: low 32-bits
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SHRED_MEMORY_NAME ); // name of map object
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if (hMapObject == NULL)
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return FALSE;
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// The first process to attach initializes memory.
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fInit = (GetLastError() != ERROR_ALREADY_EXISTS);
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if (fInit && dwOption == OPEN_EXISTING_SHARED_RESOURCES ) {
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CloseSharedMemory ();
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return FALSE; // no shared memory exist
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}
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// Get a pointer to the file-mapped shared memory.
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pList = (LIST_OBJECT *) MapViewOfFile(
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hMapObject, // object to map view of
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FILE_MAP_WRITE, // read/write access
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0, // high offset: map from
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0, // low offset: beginning
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0); // default: map entire file
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if (pList == NULL)
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return FALSE;
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// Initialize memory if this is the first process.
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if (fInit) {
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memset( ( PBYTE )pList, '\0', SHMEMSIZE);
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pList->MaxCount = ( SHMEMSIZE - sizeof ( LIST_OBJECT ) ) / (LIST_NAME_LEN*sizeof (WCHAR));
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}
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//
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// Also initialize all the locking and synchronization object
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//
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if ( !Wow64CreateLock ( dwOption ) ) {
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CloseSharedMemory ();
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return FALSE;
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}
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return TRUE;
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}
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VOID
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CloseSharedMemory ()
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{
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if (pList != NULL )
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UnmapViewOfFile(pList);
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pList = NULL;
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// Close the process's handle to the file-mapping object.
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if ( hMapObject!= NULL )
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CloseHandle(hMapObject);
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hMapObject = NULL;
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Wow64CloseLock ();
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}
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// initially try to transfer only one object
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BOOL
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EnQueueObject (
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PWCHAR pObjName,
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WCHAR Type
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)
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/*++
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Routine Description:
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Put an object name in the queue.
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Arguments:
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pObjName - Name of the object to put in the quque.
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Type - L: Loading hive
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U: Unloading Hive
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Return Value:
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TRUE if the function has successfully created/opened the memory.
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FALSE otherwise.
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--*/
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{
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// lpvMem check if this value is NULL
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// wait to get the lock on shared memory
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DWORD Len;
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DWORD i;
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if ( pList == NULL )
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return FALSE;
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Len = wcslen (pObjName);
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if (Len == 0 || Len > 256 )
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return FALSE;
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if (!LockSharedMemory ())
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return FALSE;
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if ( pList->Count == pList->MaxCount ) {
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UnLockSharedMemory ();
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return FALSE;
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}
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for ( i=0; i<pList->MaxCount; i++) {
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if (pList->Name[i][0] == UNICODE_NULL ) break;
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}
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if ( i == pList->MaxCount ) {
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UnLockSharedMemory ();
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return FALSE;
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}
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wcscpy ( pList->Name[i], pObjName);
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pList->Count++;
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pList->Name[i][LIST_NAME_LEN-1] = Type;
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UnLockSharedMemory ();
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SignalWow64Svc ();
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// write data
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// release data
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return TRUE;
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}
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BOOL
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DeQueueObject (
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PWCHAR pObjName,
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PWCHAR Type
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)
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/*++
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Routine Description:
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Get a name of object from the queue.
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Arguments:
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pObjName - Name of the object that receive the name.
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Type - L: Loading hive
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U: Unloading Hive
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Return Value:
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TRUE if the function has successfully created/opened the memory.
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FALSE otherwise.
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--*/
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{
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// lpvMem check if this value is NULL
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// wait to get the lock on shared memory
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DWORD Len;
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DWORD i;
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if ( pList == NULL )
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return FALSE;
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if (!LockSharedMemory ())
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return FALSE;
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if ( pList->Count == 0 ) {
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UnLockSharedMemory ();
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return FALSE;
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}
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for ( i=0; i < pList->MaxCount; i++) {
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if (pList->Name[i][0] != UNICODE_NULL ) break;
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}
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if ( i == pList->MaxCount ) {
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UnLockSharedMemory ();
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return FALSE;
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}
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wcscpy ( pObjName, pList->Name[i]);
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pList->Name[i][0] = UNICODE_NULL;
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pList->Count--;
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*Type = pList->Name[i][LIST_NAME_LEN-1];
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UnLockSharedMemory ();
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//SignalWow64Svc ();
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// write data
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// release data
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return TRUE;
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}
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//signal wowservice to receive the data.
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BOOL
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SignalWow64Svc ()
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{
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//this might be a simple event trigger or set event
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||
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if ( SetEvent ( hWow64Event ) )
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return TRUE;
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|
return FALSE;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
CheckAdminPriviledge ()
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Check if the running thread has admin priviledge.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
None.
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
TRUE if the calling thread has admin proviledge.
|
||
|
|
FALSE otherwise.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
|
||
|
|
BOOL bRetCode = FALSE;
|
||
|
|
/*
|
||
|
|
HANDLE TokenHandle;
|
||
|
|
BOOL b;
|
||
|
|
DWORD ReturnLength;
|
||
|
|
|
||
|
|
PTOKEN_USER TokenInfo;
|
||
|
|
|
||
|
|
//
|
||
|
|
// If we're impersonating, use the thread token, otherwise
|
||
|
|
// use the process token.
|
||
|
|
//
|
||
|
|
|
||
|
|
PTOKEN_USER Result = NULL;
|
||
|
|
|
||
|
|
b = OpenThreadToken(
|
||
|
|
GetCurrentThread(),
|
||
|
|
TOKEN_QUERY,
|
||
|
|
FALSE,
|
||
|
|
&TokenHandle
|
||
|
|
);
|
||
|
|
|
||
|
|
if (!b) {
|
||
|
|
|
||
|
|
if (GetLastError() == ERROR_NO_TOKEN) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// We're not impersonating, try the process token
|
||
|
|
//
|
||
|
|
|
||
|
|
b = OpenProcessToken(
|
||
|
|
GetCurrentProcess(),
|
||
|
|
TOKEN_QUERY,
|
||
|
|
&TokenHandle
|
||
|
|
);
|
||
|
|
|
||
|
|
if (!b) {
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
//
|
||
|
|
// We failed for some unexpected reason, return NULL and
|
||
|
|
// let the caller figure it out if he so chooses.
|
||
|
|
//
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
ReturnLength = GetSidLengthRequired( SID_MAX_SUB_AUTHORITIES ) + sizeof( TOKEN_USER );
|
||
|
|
|
||
|
|
TokenInfo = (PTOKEN_USER)malloc( ReturnLength );
|
||
|
|
|
||
|
|
if (TokenInfo != NULL) {
|
||
|
|
|
||
|
|
b = GetTokenInformation (
|
||
|
|
TokenHandle,
|
||
|
|
TokenGroups,
|
||
|
|
TokenInfo,
|
||
|
|
ReturnLength,
|
||
|
|
&ReturnLength
|
||
|
|
);
|
||
|
|
|
||
|
|
if (b) {
|
||
|
|
|
||
|
|
Result = TokenInfo;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// Reallocate TokenInfo
|
||
|
|
//
|
||
|
|
|
||
|
|
free( TokenInfo );
|
||
|
|
|
||
|
|
TokenInfo = (PTOKEN_USER)malloc( ReturnLength );
|
||
|
|
|
||
|
|
if (TokenInfo != NULL) {
|
||
|
|
|
||
|
|
b = GetTokenInformation (
|
||
|
|
TokenHandle,
|
||
|
|
TokenGroups,
|
||
|
|
TokenInfo,
|
||
|
|
ReturnLength,
|
||
|
|
&ReturnLength
|
||
|
|
);
|
||
|
|
|
||
|
|
if (b) {
|
||
|
|
|
||
|
|
Result = TokenInfo;
|
||
|
|
}
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
DWORD dwSidSize = 0;
|
||
|
|
SID_NAME_USE SidType;
|
||
|
|
DWORD strSize = 80;
|
||
|
|
WCHAR str [80];
|
||
|
|
SID_NAME_USE sidType;
|
||
|
|
BOOL bProceede = TRUE;
|
||
|
|
|
||
|
|
DWORD dwRet = LookupAccountName (
|
||
|
|
NULL,
|
||
|
|
L"Administrators",
|
||
|
|
NULL,
|
||
|
|
&dwSidSize,
|
||
|
|
str,
|
||
|
|
&strSize,
|
||
|
|
&sidType );
|
||
|
|
|
||
|
|
if ( dwSidSize == 0)
|
||
|
|
if ( !dwRet ) {
|
||
|
|
cBase.PrintErrorWin32 ( GetLastError () );
|
||
|
|
bProceede = FALSE;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
PSID psid = NULL;
|
||
|
|
|
||
|
|
if ( bProceede )
|
||
|
|
if ( dwSidSize ) {
|
||
|
|
psid = (PSID) GlobalAlloc ( GPTR, dwSidSize );
|
||
|
|
|
||
|
|
if ( psid == NULL )
|
||
|
|
bProceede = FALSE;
|
||
|
|
else {
|
||
|
|
strSize = 80;
|
||
|
|
dwRet = LookupAccountName (
|
||
|
|
NULL,
|
||
|
|
L"Administrators",
|
||
|
|
psid,
|
||
|
|
&dwSidSize,
|
||
|
|
str,
|
||
|
|
&strSize,
|
||
|
|
&sidType );
|
||
|
|
if ( ! dwRet )
|
||
|
|
bProceede = FALSE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//now check
|
||
|
|
|
||
|
|
|
||
|
|
if ( Result == NULL )
|
||
|
|
bProceede = FALSE;
|
||
|
|
|
||
|
|
|
||
|
|
TOKEN_GROUPS *pGroups = ( TOKEN_GROUPS *)Result;
|
||
|
|
|
||
|
|
|
||
|
|
if ( bProceede )
|
||
|
|
for ( int i=0; i < pGroups->GroupCount; i++ ) {
|
||
|
|
if ( EqualSid ( pGroups->Groups [i].Sid, psid ) ){
|
||
|
|
bRetCode = TRUE;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
if ( psid != NULL )
|
||
|
|
GlobalFree ( psid );
|
||
|
|
|
||
|
|
if ( Result != NULL )
|
||
|
|
free ( Result );
|
||
|
|
|
||
|
|
*/
|
||
|
|
return bRetCode;
|
||
|
|
}
|