350 lines
11 KiB
C
350 lines
11 KiB
C
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/*
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* Module Name: fekbdcom.c
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* Common FE routines for stub keyboard layout DLLs
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* Copyright (c) 1985-92, Microsoft Corporation
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* History: Created Aug 1997 by Hiro Yamamoto
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*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <windows.h>
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#include <kbd.h>
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/*
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* KbdLayerRealDllFile() returns the name of the real keyboard Dll
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* Get Dll name from the registry
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* PATH:"\Registry\Machine\System\CurrentControlSet\Services\i8042prt\Parameters"
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* VALUE:"LayerDriver" (REG_SZ)
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* kbdjpn.dll for Japanese and kbdkor.dll for Korean
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*/
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#if 0 // FYI: old explanation
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/*
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* KbdLayerRealDriverFile() returns the name of the real keyboard driver
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* 1) Get Path to the name of safe real driver
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* KEY: "\Registry\Machine\Hardware\DeviceMap\KeyboardPort"
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* VALUE: "\Device\KeyboardPort0" (REG_SZ) keeps path in the registry
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* e.g. "\REGISTRY\Machine\System\ControlSet001\Services\i8042prt"
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* ~~~~~~~~~~~~~~~~~~
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* 2) Create path from the results
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* "\Registry\Machine\System\CurrentControlSet" + "\Services\i8042prt" + "\Parameters"
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* 3) Get value
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* PATH: "\Registry\Machine\System\CurrentControlSet\Services\i8042prt\Parameters"
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* VALUE: "Parameters" (REG_SZ)
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* NOTE: default value:
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* "KBD101.DLL" for Japanese
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* "KBD101A.DLL" for Korean
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* kbdjpn.dll and kbdkor.dll
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*/
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#endif
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#if defined(HIRO_DBG)
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#define TRACE(x) DbgPrint x
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#else
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#define TRACE(x)
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#endif
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/*
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* Maximum character count
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*/
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#define MAXBUF_CSIZE (256)
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/*
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* Null-terminates the wchar string in pKey.
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* returns pointer to WCHAR string.
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* limit: maximum BYTE SIZE
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*/
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__inline LPWSTR MakeString(PKEY_VALUE_FULL_INFORMATION pKey, size_t limit)
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{
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LPWSTR pwszHead = (LPWSTR)((LPBYTE)pKey + pKey->DataOffset);
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LPWSTR pwszTail = (LPWSTR)((LPBYTE)pwszHead + pKey->DataLength);
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ASSERT((LPBYTE)pwszTail - (LPBYTE)pKey < (int)limit );
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*pwszTail = L'\0';
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UNREFERENCED_PARAMETER(limit); // just in case
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return pwszHead;
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}
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#if 0 // not needed any more
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/*
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* Find L"\services" in the given str.
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* Case insensitive search.
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* To avoid the binary size increase,
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* and since we know the string we're searching only contains
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* alphabet and backslash,
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* it's safe here not to use ideal functions (tolower/toupper).
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*/
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WCHAR* FindServices(WCHAR* str)
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{
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CONST WCHAR wszServices[] = L"\\services";
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while (*str) {
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CONST WCHAR* p1;
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CONST WCHAR* p2;
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for (p1 = str, p2 = wszServices; *p1 && *p2; ++p1, ++p2) {
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// we know p2 only contains alphabet and backslash
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if (*p2 != L'\\') {
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if ((*p1 != *p2) && (*p1 + (L'a' - L'A') != *p2)) {
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break;
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}
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}
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else if (*p1 != L'\\') {
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break;
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}
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}
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if (*p2 == 0) {
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// we found a match !
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return str;
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}
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++str;
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}
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return NULL;
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}
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#endif
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BOOL GetRealDllFileNameWorker(CONST WCHAR* pwszKeyName, WCHAR* RealDllName)
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{
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NTSTATUS Status;
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HANDLE handleService;
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BOOL fRet = FALSE;
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UNICODE_STRING servicePath;
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OBJECT_ATTRIBUTES servicePathObjectAttributes;
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WCHAR serviceRegistryPath[MAXBUF_CSIZE];
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servicePath.Buffer = serviceRegistryPath;
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servicePath.Length = 0;
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servicePath.MaximumLength = sizeof serviceRegistryPath; // byte count !
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RtlAppendUnicodeToString(&servicePath, L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\i8042prt\\Parameters");
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InitializeObjectAttributes(&servicePathObjectAttributes, &servicePath, OBJ_CASE_INSENSITIVE, NULL, NULL);
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TRACE(("Open -> '%ws'\n",servicePath.Buffer));
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Status = NtOpenKey(&handleService, KEY_READ, &servicePathObjectAttributes);
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if (NT_SUCCESS(Status)) {
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UNICODE_STRING layerName;
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WCHAR LayerDllName[MAXBUF_CSIZE];
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ULONG cbStringSize;
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RtlInitUnicodeString(&layerName, pwszKeyName);
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TRACE(("Entry name -> '%ws'\n", layerName.Buffer));
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/*
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* Get the name of the DLL based on the device name.
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*/
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Status = NtQueryValueKey(handleService, &layerName, KeyValueFullInformation, LayerDllName, sizeof LayerDllName - sizeof(WCHAR), // reserves room for L'\0'
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&cbStringSize);
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if (NT_SUCCESS(Status)) {
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LPWSTR pwszStr = MakeString((PKEY_VALUE_FULL_INFORMATION)LayerDllName, sizeof LayerDllName);
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wcscpy(RealDllName, pwszStr);
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TRACE(("Real Dll name -> '%ws'\n", RealDllName));
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fRet = TRUE;// everything went fine.
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}
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NtClose(handleService);
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}
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return fRet;
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}
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// This entry is used for backward compatibility.
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// Exported as ordinal 3.
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BOOL KbdLayerRealDllFileNT4(WCHAR *RealDllName)
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{
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TRACE(("KbdLayerRealDllFile():\n"));
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return GetRealDllFileNameWorker(L"LayerDriver", RealDllName);
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}
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// This entry is used for remote client of Hydra server.
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// Created: 1988 kazum
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BOOL KbdLayerRealDllFileForWBT(HKL hkl, WCHAR *realDllName, PCLIENTKEYBOARDTYPE pClientKbdType, LPVOID reserve)
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{
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HANDLE hkRegistry = NULL;
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UNICODE_STRING deviceMapPath;
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OBJECT_ATTRIBUTES deviceMapObjectAttributes;
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NTSTATUS Status;
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HANDLE handleMap;
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HANDLE handleService;
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ULONG cbStringSize;
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PWCHAR pwszReg;
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UNREFERENCED_PARAMETER(reserve);
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ASSERT(pClientKbdType != NULL);
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/*
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* Set default keyboard layout for error cases.
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*/
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if (PRIMARYLANGID(LOWORD(hkl)) == LANG_JAPANESE) {
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wcscpy(realDllName, L"kbd101.dll");
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pwszReg = L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\Terminal Server\\KeyboardType Mapping\\JPN";
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}
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else if (PRIMARYLANGID(LOWORD(hkl)) == LANG_KOREAN) {
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wcscpy(realDllName, L"kbd101a.dll");
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pwszReg = L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\Terminal Server\\KeyboardType Mapping\\KOR";
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}
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else {
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ASSERT(FALSE);
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}
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/*
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* Start by opening the registry for keyboard type mapping table.
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*/
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RtlInitUnicodeString(&deviceMapPath, pwszReg);
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InitializeObjectAttributes(&deviceMapObjectAttributes,
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&deviceMapPath,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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// DbgPrint("Open -> %ws\n",deviceMapPath.Buffer);
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Status = NtOpenKey(&handleMap, KEY_READ, &deviceMapObjectAttributes);
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if (NT_SUCCESS(Status)) {
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WCHAR SubKbdBuffer[16];
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WCHAR FuncKeyBuffer[16];
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WCHAR SubKbdAndFuncKeyBuffer[32];
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UNICODE_STRING SubKbd = {
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0, sizeof SubKbdBuffer, SubKbdBuffer,
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};
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UNICODE_STRING FuncKbd = {
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0, sizeof FuncKeyBuffer, FuncKeyBuffer,
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};
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UNICODE_STRING SubKbdAndFuncKey = {
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0, sizeof SubKbdAndFuncKeyBuffer, SubKbdAndFuncKeyBuffer,
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};
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UCHAR AnsiBuffer[16];
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ANSI_STRING AnsiString;
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WCHAR LayerDriverName[256];
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/*
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* Convert the sub keyboard type to the Ansi string buffer.
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*/
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RtlZeroMemory(AnsiBuffer, sizeof(AnsiBuffer));
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Status = RtlIntegerToChar(pClientKbdType->SubType, 16L,
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-8, // length of buffer, but negative means 0 padding
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AnsiBuffer);
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if (NT_SUCCESS(Status)) {
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/*
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* Convert the Ansi string buffer to Unicode string buffer.
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*/
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AnsiString.Buffer = AnsiBuffer;
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AnsiString.MaximumLength = sizeof AnsiBuffer;
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AnsiString.Length = (USHORT)strlen(AnsiBuffer);
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Status = RtlAnsiStringToUnicodeString(&SubKbd, &AnsiString, FALSE);
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}
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ASSERT(NT_SUCCESS(Status)); // Make sure the number is not bad
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/*
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* Convert the number of function key to the Ansi string buffer.
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*/
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RtlZeroMemory(AnsiBuffer, sizeof(AnsiBuffer));
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Status = RtlIntegerToChar(pClientKbdType->FunctionKey, 10L,
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-4, // length of buffer, but negative means 0 padding
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AnsiBuffer);
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if (NT_SUCCESS(Status)) {
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/*
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* Convert the Ansi string buffer to Unicode string buffer.
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*/
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AnsiString.Buffer = AnsiBuffer;
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AnsiString.MaximumLength = sizeof AnsiBuffer;
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AnsiString.Length = (USHORT)strlen(AnsiBuffer);
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Status = RtlAnsiStringToUnicodeString(&FuncKbd, &AnsiString, FALSE);
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}
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ASSERT(NT_SUCCESS(Status)); // Make sure the number is not bad
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/*
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* Get the sub kbd + function key layout name
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*/
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RtlCopyUnicodeString(&SubKbdAndFuncKey, &SubKbd);
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RtlAppendUnicodeStringToString(&SubKbdAndFuncKey, &FuncKbd);
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Status = NtQueryValueKey(handleMap, &SubKbdAndFuncKey, KeyValueFullInformation, LayerDriverName, sizeof(LayerDriverName), &cbStringSize);
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if (NT_SUCCESS(Status)) {
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LayerDriverName[cbStringSize / sizeof(WCHAR)] = L'\0';
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wcscpy(realDllName, (LPWSTR)((PUCHAR)LayerDriverName + ((PKEY_VALUE_FULL_INFORMATION)LayerDriverName)->DataOffset));
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// DbgPrint("Real driver name -> %ws\n",realDllName);
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}
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else {
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/*
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* Get the sub kbd layout name
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*/
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Status = NtQueryValueKey(handleMap, &SubKbd, KeyValueFullInformation, LayerDriverName, sizeof(LayerDriverName), &cbStringSize);
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if (NT_SUCCESS(Status)) {
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LayerDriverName[cbStringSize / sizeof(WCHAR)] = L'\0';
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wcscpy(realDllName, (LPWSTR)((PUCHAR)LayerDriverName + ((PKEY_VALUE_FULL_INFORMATION)LayerDriverName)->DataOffset));
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// DbgPrint("Real driver name -> %ws\n",realDllName);
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}
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}
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NtClose(handleMap);
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}
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return TRUE;
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}
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__inline WCHAR* wszcpy(WCHAR* target, CONST WCHAR* src)
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{
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while (*target++ = *src++);
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return target - 1;
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}
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// KbdLayerRealDllFile
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// Enhanced version of KbdLayerRealDllFile:
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// Distinguishes KOR and JPN.
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BOOL KbdLayerRealDllFile(HKL hkl, WCHAR *realDllName, PCLIENTKEYBOARDTYPE pClientKbdType, LPVOID reserve)
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{
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WCHAR pwszBuff[32];
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WCHAR* pwszTail;
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LPCWSTR pwsz;
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ASSERT(PRIMARYLANGID(LOWORD(hkl)) == LANG_JAPANESE || PRIMARYLANGID(LOWORD(hkl)) == LANG_KOREAN);
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if (pClientKbdType != NULL) {
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// HYDRA case
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return KbdLayerRealDllFileForWBT(hkl, realDllName, pClientKbdType, reserve);
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}
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if (PRIMARYLANGID(LOWORD(hkl)) == LANG_JAPANESE) {
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pwsz = L" JPN";
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}
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else if (PRIMARYLANGID(LOWORD(hkl)) == LANG_KOREAN) {
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pwsz = L" KOR";
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}
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else {
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pwsz = L"";
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}
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pwszTail = wszcpy(pwszBuff, L"LayerDriver");
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if (*pwsz) {
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wszcpy(pwszTail, pwsz);
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}
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TRACE(("KbdLayerRealDllFileEx: fetching '%S'\n", pwszBuff));
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return GetRealDllFileNameWorker(pwszBuff, realDllName);
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}
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