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440 lines
11 KiB
440 lines
11 KiB
/*++
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Copyright (c) 2001 Microsoft Corporation
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Module Name:
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avrfutil.cpp
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Abstract:
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This module implements the code for manipulating the AppVerifier log file.
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Author:
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dmunsil created 04/26/2001
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Revision History:
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08/14/2001 robkenny Moved code inside the ShimLib namespace.
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09/21/2001 rparsons Logging code now uses NT calls.
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09/25/2001 rparsons Added critical section.
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--*/
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#include "avrfutil.h"
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namespace ShimLib
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{
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#define AV_KEY APPCOMPAT_KEY_PATH_MACHINE L"\\AppVerifier"
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HANDLE
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AVCreateKeyPath(
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LPCWSTR pwszPath
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)
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/*++
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Return: The handle to the registry key created.
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Desc: Given a path to the key, open/create it.
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The key returns the handle to the key or NULL on failure.
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--*/
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{
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UNICODE_STRING ustrKey;
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HANDLE KeyHandle = NULL;
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NTSTATUS Status;
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OBJECT_ATTRIBUTES ObjectAttributes;
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ULONG CreateDisposition;
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RtlInitUnicodeString(&ustrKey, pwszPath);
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InitializeObjectAttributes(&ObjectAttributes,
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&ustrKey,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = NtCreateKey(&KeyHandle,
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STANDARD_RIGHTS_WRITE |
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KEY_QUERY_VALUE |
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KEY_ENUMERATE_SUB_KEYS |
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KEY_SET_VALUE |
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KEY_CREATE_SUB_KEY,
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&ObjectAttributes,
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0,
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NULL,
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REG_OPTION_NON_VOLATILE,
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&CreateDisposition);
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if (!NT_SUCCESS(Status)) {
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KeyHandle = NULL;
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goto out;
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}
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out:
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return KeyHandle;
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}
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BOOL SaveShimSettingDWORD(
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LPCWSTR szShim,
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LPCWSTR szExe,
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LPCWSTR szSetting,
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DWORD dwSetting
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)
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{
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WCHAR szKey[300];
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UNICODE_STRING ustrKey;
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UNICODE_STRING ustrSetting;
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NTSTATUS Status;
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OBJECT_ATTRIBUTES ObjectAttributes;
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HANDLE KeyHandle;
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BOOL bRet = FALSE;
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ULONG CreateDisposition;
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if (!szShim || !szSetting || !szExe) {
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goto out;
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}
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//
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// we have to ensure all the sub-keys are created
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//
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wcscpy(szKey, APPCOMPAT_KEY_PATH_MACHINE);
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KeyHandle = AVCreateKeyPath(szKey);
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if (!KeyHandle) {
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goto out;
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}
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NtClose(KeyHandle);
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wcscpy(szKey, AV_KEY);
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KeyHandle = AVCreateKeyPath(szKey);
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if (!KeyHandle) {
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goto out;
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}
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NtClose(KeyHandle);
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wcscat(szKey, L"\\");
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wcscat(szKey, szExe);
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KeyHandle = AVCreateKeyPath(szKey);
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if (!KeyHandle) {
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goto out;
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}
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NtClose(KeyHandle);
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wcscat(szKey, L"\\");
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wcscat(szKey, szShim);
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KeyHandle = AVCreateKeyPath(szKey);
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if (!KeyHandle) {
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goto out;
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}
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RtlInitUnicodeString(&ustrSetting, szSetting);
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Status = NtSetValueKey(KeyHandle,
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&ustrSetting,
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0,
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REG_DWORD,
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(PVOID)&dwSetting,
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sizeof(dwSetting));
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NtClose(KeyHandle);
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if (!NT_SUCCESS(Status)) {
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goto out;
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}
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bRet = TRUE;
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out:
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return bRet;
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}
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DWORD GetShimSettingDWORD(
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LPCWSTR szShim,
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LPCWSTR szExe,
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LPCWSTR szSetting,
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DWORD dwDefault
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)
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{
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WCHAR szKey[300];
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UNICODE_STRING ustrKey;
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UNICODE_STRING ustrSetting;
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NTSTATUS Status;
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OBJECT_ATTRIBUTES ObjectAttributes;
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HANDLE KeyHandle;
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PKEY_VALUE_PARTIAL_INFORMATION KeyValueInformation;
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ULONG KeyValueBuffer[256];
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ULONG KeyValueLength;
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if (!szShim || !szSetting || !szExe) {
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goto out;
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}
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wcscpy(szKey, AV_KEY);
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wcscat(szKey, L"\\");
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wcscat(szKey, szExe);
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wcscat(szKey, L"\\");
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wcscat(szKey, szShim);
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RtlInitUnicodeString(&ustrKey, szKey);
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RtlInitUnicodeString(&ustrSetting, szSetting);
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InitializeObjectAttributes(&ObjectAttributes,
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&ustrKey,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = NtOpenKey(&KeyHandle,
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GENERIC_READ,
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&ObjectAttributes);
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if (!NT_SUCCESS(Status)) {
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//
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// OK, didn't find a specific one for this exe, try the default setting
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//
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wcscpy(szKey, AV_KEY);
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wcscat(szKey, L"\\");
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wcscat(szKey, AVRF_DEFAULT_SETTINGS_NAME_W);
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wcscat(szKey, L"\\");
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wcscat(szKey, szShim);
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RtlInitUnicodeString(&ustrKey, szKey);
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RtlInitUnicodeString(&ustrSetting, szSetting);
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InitializeObjectAttributes(&ObjectAttributes,
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&ustrKey,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = NtOpenKey(&KeyHandle,
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GENERIC_READ,
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&ObjectAttributes);
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if (!NT_SUCCESS(Status)) {
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goto out;
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}
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}
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KeyValueInformation = (PKEY_VALUE_PARTIAL_INFORMATION)&KeyValueBuffer;
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Status = NtQueryValueKey(KeyHandle,
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&ustrSetting,
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KeyValuePartialInformation,
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KeyValueInformation,
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sizeof(KeyValueBuffer),
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&KeyValueLength);
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NtClose(KeyHandle);
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if (!NT_SUCCESS(Status)) {
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goto out;
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}
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//
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// Check for the value type.
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//
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if (KeyValueInformation->Type != REG_DWORD) {
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goto out;
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}
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dwDefault = *(DWORD*)(&KeyValueInformation->Data);
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out:
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return dwDefault;
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}
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BOOL SaveShimSettingString(
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LPCWSTR szShim,
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LPCWSTR szExe,
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LPCWSTR szSetting,
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LPCWSTR szValue
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)
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{
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WCHAR szKey[300];
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UNICODE_STRING ustrKey;
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UNICODE_STRING ustrSetting;
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NTSTATUS Status;
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OBJECT_ATTRIBUTES ObjectAttributes;
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HANDLE KeyHandle;
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BOOL bRet = FALSE;
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ULONG CreateDisposition;
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if (!szShim || !szSetting || !szValue || !szExe) {
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goto out;
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}
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//
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// we have to ensure all the sub-keys are created
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//
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wcscpy(szKey, APPCOMPAT_KEY_PATH_MACHINE);
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KeyHandle = AVCreateKeyPath(szKey);
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if (!KeyHandle) {
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goto out;
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}
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NtClose(KeyHandle);
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wcscpy(szKey, AV_KEY);
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KeyHandle = AVCreateKeyPath(szKey);
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if (!KeyHandle) {
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goto out;
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}
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NtClose(KeyHandle);
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wcscat(szKey, L"\\");
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wcscat(szKey, szExe);
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KeyHandle = AVCreateKeyPath(szKey);
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if (!KeyHandle) {
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goto out;
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}
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NtClose(KeyHandle);
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wcscat(szKey, L"\\");
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wcscat(szKey, szShim);
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KeyHandle = AVCreateKeyPath(szKey);
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if (!KeyHandle) {
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goto out;
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}
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RtlInitUnicodeString(&ustrSetting, szSetting);
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Status = NtSetValueKey(KeyHandle,
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&ustrSetting,
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0,
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REG_SZ,
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(PVOID)szValue,
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(wcslen(szValue) + 1) * sizeof(WCHAR));
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NtClose(KeyHandle);
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if (!NT_SUCCESS(Status)) {
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goto out;
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}
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bRet = TRUE;
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out:
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return bRet;
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}
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BOOL GetShimSettingString(
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LPCWSTR szShim,
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LPCWSTR szExe,
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LPCWSTR szSetting,
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LPWSTR szResult,
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DWORD dwBufferLen // in WCHARs
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)
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{
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WCHAR szKey[300];
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UNICODE_STRING ustrKey;
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UNICODE_STRING ustrSetting;
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NTSTATUS Status;
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OBJECT_ATTRIBUTES ObjectAttributes;
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HANDLE KeyHandle;
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PKEY_VALUE_PARTIAL_INFORMATION KeyValueInformation;
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ULONG KeyValueBuffer[256];
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ULONG KeyValueLength;
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BOOL bRet = FALSE;
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if (!szShim || !szSetting || !szResult || !szExe) {
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goto out;
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}
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wcscpy(szKey, AV_KEY);
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wcscat(szKey, L"\\");
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wcscat(szKey, szExe);
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wcscat(szKey, L"\\");
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wcscat(szKey, szShim);
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RtlInitUnicodeString(&ustrKey, szKey);
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RtlInitUnicodeString(&ustrSetting, szSetting);
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InitializeObjectAttributes(&ObjectAttributes,
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&ustrKey,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = NtOpenKey(&KeyHandle,
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GENERIC_READ,
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&ObjectAttributes);
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if (!NT_SUCCESS(Status)) {
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//
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// OK, didn't find a specific one for this exe, try the default setting
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//
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wcscpy(szKey, AV_KEY);
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wcscat(szKey, L"\\");
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wcscat(szKey, AVRF_DEFAULT_SETTINGS_NAME_W);
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wcscat(szKey, L"\\");
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wcscat(szKey, szShim);
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RtlInitUnicodeString(&ustrKey, szKey);
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RtlInitUnicodeString(&ustrSetting, szSetting);
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InitializeObjectAttributes(&ObjectAttributes,
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&ustrKey,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = NtOpenKey(&KeyHandle,
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GENERIC_READ,
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&ObjectAttributes);
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if (!NT_SUCCESS(Status)) {
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goto out;
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}
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}
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KeyValueInformation = (PKEY_VALUE_PARTIAL_INFORMATION)&KeyValueBuffer;
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Status = NtQueryValueKey(KeyHandle,
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&ustrSetting,
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KeyValuePartialInformation,
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KeyValueInformation,
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sizeof(KeyValueBuffer),
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&KeyValueLength);
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NtClose(KeyHandle);
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if (!NT_SUCCESS(Status)) {
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goto out;
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}
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//
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// Check for the value type.
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//
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if (KeyValueInformation->Type != REG_SZ) {
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goto out;
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}
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//
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// check to see if the datalength is bigger than our local nbuffer
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//
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if (KeyValueInformation->DataLength > (sizeof(KeyValueBuffer) - sizeof(KEY_VALUE_PARTIAL_INFORMATION))) {
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KeyValueInformation->DataLength = sizeof(KeyValueBuffer) - sizeof(KEY_VALUE_PARTIAL_INFORMATION);
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}
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//
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// change the buffer length to correspond to the data length, if necessary
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//
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if (KeyValueInformation->DataLength < (dwBufferLen * sizeof(WCHAR))) {
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dwBufferLen = (KeyValueInformation->DataLength / sizeof(WCHAR));
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}
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RtlCopyMemory(szResult, KeyValueInformation->Data, dwBufferLen * sizeof(WCHAR));
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szResult[dwBufferLen - 1] = 0;
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bRet = TRUE;
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out:
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return bRet;
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}
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} // end of namespace ShimLib
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