app/lib/common/win32/credentials.dart

79 lines
2.4 KiB
Dart
Raw Normal View History

2023-11-06 00:29:25 +08:00
// Copyright (c) 2020, Dart | Windows. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// Reads and writes credentials
import 'dart:convert';
import 'dart:ffi';
import 'dart:typed_data';
import 'package:ffi/ffi.dart';
import 'package:win32/win32.dart';
import '../utils/base_utils.dart';
class Win32Credentials {
static void write(
{required String credentialName,
required String userName,
required String password}) {
final examplePassword = utf8.encode(password) as Uint8List;
final blob = examplePassword.allocatePointer();
final credential = calloc<CREDENTIAL>()
..ref.Type = CRED_TYPE_GENERIC
..ref.TargetName = credentialName.toNativeUtf16()
..ref.Persist = CRED_PERSIST_LOCAL_MACHINE
..ref.UserName = userName.toNativeUtf16()
..ref.CredentialBlob = blob
..ref.CredentialBlobSize = examplePassword.length;
final result = CredWrite(credential, 0);
if (result != TRUE) {
final errorCode = GetLastError();
dPrint('Error ($result): $errorCode');
return;
}
dPrint('Success (blob size: ${credential.ref.CredentialBlobSize})');
free(blob);
free(credential);
}
static MapEntry<String, String>? read(String credentialName) {
dPrint('Reading $credentialName ...');
final credPointer = calloc<Pointer<CREDENTIAL>>();
final result = CredRead(
credentialName.toNativeUtf16(), CRED_TYPE_GENERIC, 0, credPointer);
if (result != TRUE) {
final errorCode = GetLastError();
var errorText = '$errorCode';
if (errorCode == ERROR_NOT_FOUND) {
errorText += ' Not found.';
}
dPrint('Error ($result): $errorText');
return null;
}
final cred = credPointer.value.ref;
final blob = cred.CredentialBlob.asTypedList(cred.CredentialBlobSize);
final password = utf8.decode(blob);
CredFree(credPointer.value);
free(credPointer);
return MapEntry(cred.UserName.toDartString(), password);
}
static void delete(String credentialName) {
dPrint('Deleting $credentialName');
final result =
CredDelete(credentialName.toNativeUtf16(), CRED_TYPE_GENERIC, 0);
if (result != TRUE) {
final errorCode = GetLastError();
dPrint('Error ($result): $errorCode');
return;
}
dPrint('Successfully deleted credential.');
}
}