Add check for Bank of Brazil security module to Windows Flutter Doctor validators (#141135)

Add a warning to Flutter Doctor if Topaz OFD is found as a process on
the system.
The protection module used by the Bank of Brazil has been identified as
causing build failures when using VS with CMake for Windows (see
https://github.com/flutter/flutter/issues/121366#issuecomment-1845703728).
Disabling the software allows the build to succeed again.

If a running process is found by `flutter doctor` whose path contains
`Topaz OFD\Warsaw\core.exe`, a warning message is generated to convey
this.

Addresses https://github.com/flutter/flutter/issues/121366

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [ ] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

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[Contributor Guide]:
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[Tree Hygiene]: https://github.com/flutter/flutter/wiki/Tree-hygiene
[test-exempt]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo
[Features we expect every widget to implement]:
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[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/wiki/Tree-hygiene#handling-breaking-changes
[Discord]: https://github.com/flutter/flutter/wiki/Chat

---------
Co-authored-by: Elias Yishak <42216813+eliasyishak@users.noreply.github.com>
Co-authored-by: Loïc Sharma <737941+loic-sharma@users.noreply.github.com>

packages/flutter_tools/lib/src/doctor.dart

@@ -142,6 +142,7 @@ class _DefaultDoctorValidatorsProvider implements DoctorValidatorsProvider {
       if (platform.isWindows)
         WindowsVersionValidator(
           operatingSystemUtils: globals.os,
+          processLister: ProcessLister(globals.processManager),
         ),
       if (androidWorkflow!.appliesToHostPlatform)
         GroupedValidator(<DoctorValidator>[androidValidator!, androidLicenseValidator!]),

packages/flutter_tools/lib/src/windows/windows_version_validator.dart

@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:process/process.dart';
+
+import '../base/io.dart';
 import '../base/os.dart';
 import '../doctor_validator.dart';
 
@@ -16,14 +19,44 @@ const List<String> kUnsupportedVersions = <String>[
 /// (ie. 10.5.4123)
 const String kWindowsOSVersionSemVerPattern = r'([0-9]+)\.([0-9]+)\.([0-9\.]+)';
 
+/// Regex pattern for identifying a running instance of the Topaz OFD process.
+/// This is a known process that interferes with the build toolchain.
+/// See https://github.com/flutter/flutter/issues/121366
+const String kCoreProcessPattern = r'Topaz\s+OFD\\Warsaw\\core\.exe';
+
 /// Validator for supported Windows host machine operating system version.
 class WindowsVersionValidator extends DoctorValidator {
   const WindowsVersionValidator({
     required OperatingSystemUtils operatingSystemUtils,
+    required ProcessLister processLister,
   })  : _operatingSystemUtils = operatingSystemUtils,
+        _processLister = processLister,
         super('Windows Version');
 
   final OperatingSystemUtils _operatingSystemUtils;
+  final ProcessLister _processLister;
+
+  Future<ValidationResult> _topazScan() async {
+      final ProcessResult getProcessesResult = await _processLister.getProcessesWithPath();
+      if (getProcessesResult.exitCode != 0) {
+        return const ValidationResult(ValidationType.missing, <ValidationMessage>[ValidationMessage.hint('Get-Process failed to complete')]);
+      }
+      final RegExp topazRegex = RegExp(kCoreProcessPattern, caseSensitive: false,  multiLine: true);
+      final String processes = getProcessesResult.stdout as String;
+      final bool topazFound = topazRegex.hasMatch(processes);
+      if (topazFound) {
+        return const ValidationResult(
+          ValidationType.missing,
+          <ValidationMessage>[
+            ValidationMessage.hint(
+              'The Topaz OFD Security Module was detected on your machine. '
+              'You may need to disable it to build Flutter applications.',
+            ),
+          ],
+        );
+      }
+      return const ValidationResult(ValidationType.success, <ValidationMessage>[]);
+  }
 
   @override
   Future<ValidationResult> validate() async {
@@ -34,12 +67,26 @@ class WindowsVersionValidator extends DoctorValidator {
 
     // Use the string split method to extract the major version
     // and check against the [kUnsupportedVersions] list
-    final ValidationType windowsVersionStatus;
-    final String statusInfo;
+    ValidationType windowsVersionStatus;
+    final List<ValidationMessage> messages = <ValidationMessage>[];
+    String statusInfo;
     if (matches.length == 1 &&
         !kUnsupportedVersions.contains(matches.elementAt(0).group(1))) {
       windowsVersionStatus = ValidationType.success;
       statusInfo = 'Installed version of Windows is version 10 or higher';
+
+      // Check if the Topaz OFD security module is running, and warn the user if it is.
+      // See https://github.com/flutter/flutter/issues/121366
+      final List<ValidationResult> subResults = <ValidationResult>[
+        await _topazScan(),
+      ];
+      for (final ValidationResult subResult in subResults) {
+        if (subResult.type != ValidationType.success) {
+          statusInfo = 'Problem detected with Windows installation';
+          windowsVersionStatus = ValidationType.partial;
+          messages.addAll(subResult.messages);
+        }
+      }
     } else {
       windowsVersionStatus = ValidationType.missing;
       statusInfo =
@@ -48,8 +95,19 @@ class WindowsVersionValidator extends DoctorValidator {
 
     return ValidationResult(
       windowsVersionStatus,
-      const <ValidationMessage>[],
+      messages,
       statusInfo: statusInfo,
     );
   }
 }
+
+class ProcessLister {
+  ProcessLister(this.processManager);
+
+  final ProcessManager processManager;
+
+  Future<ProcessResult> getProcessesWithPath() async {
+    const String argument = 'Get-Process | Format-List Path';
+    return processManager.run(<String>['powershell', '-command', argument]);
+  }
+}

packages/flutter_tools/test/general.shard/windows_version_validator_test.dart

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:flutter_tools/src/base/io.dart';
 import 'package:flutter_tools/src/base/os.dart';
 import 'package:flutter_tools/src/doctor_validator.dart';
 import 'package:flutter_tools/src/windows/windows_version_validator.dart';
@@ -19,6 +20,29 @@ class FakeValidOperatingSystemUtils extends Fake
   final String name;
 }
 
+class FakeProcessLister extends Fake implements ProcessLister {
+  FakeProcessLister({required this.result, this.exitCode = 0});
+  final String result;
+  final int exitCode;
+
+  @override
+  Future<ProcessResult> getProcessesWithPath() async {
+    return ProcessResult(0, exitCode, result, null);
+  }
+}
+
+FakeProcessLister ofdRunning() {
+  return FakeProcessLister(result: r'Path: "C:\Program Files\Topaz OFD\Warsaw\core.exe"');
+}
+
+FakeProcessLister ofdNotRunning() {
+  return FakeProcessLister(result: r'Path: "C:\Program Files\Google\Chrome\Application\chrome.exe');
+}
+
+FakeProcessLister failure() {
+  return FakeProcessLister(result: r'Path: "C:\Program Files\Google\Chrome\Application\chrome.exe', exitCode: 10);
+}
+
 /// The expected validation result object for
 /// a passing windows version test
 const ValidationResult validWindows10ValidationResult = ValidationResult(
@@ -35,12 +59,32 @@ const ValidationResult invalidWindowsValidationResult = ValidationResult(
   statusInfo: 'Unable to confirm if installed Windows version is 10 or greater',
 );
 
+const ValidationResult ofdFoundRunning = ValidationResult(
+  ValidationType.partial,
+  <ValidationMessage>[
+    ValidationMessage.hint(
+      'The Topaz OFD Security Module was detected on your machine. '
+      'You may need to disable it to build Flutter applications.',
+    ),
+  ],
+  statusInfo: 'Problem detected with Windows installation',
+);
+
+const ValidationResult getProcessFailed = ValidationResult(
+  ValidationType.partial,
+  <ValidationMessage>[
+    ValidationMessage.hint('Get-Process failed to complete'),
+  ],
+  statusInfo: 'Problem detected with Windows installation',
+);
+
 void main() {
   testWithoutContext('Successfully running windows version check on windows 10',
       () async {
     final WindowsVersionValidator windowsVersionValidator =
         WindowsVersionValidator(
-            operatingSystemUtils: FakeValidOperatingSystemUtils());
+            operatingSystemUtils: FakeValidOperatingSystemUtils(),
+            processLister: ofdNotRunning());
 
     final ValidationResult result = await windowsVersionValidator.validate();
 
@@ -56,7 +100,8 @@ void main() {
     final WindowsVersionValidator windowsVersionValidator =
         WindowsVersionValidator(
             operatingSystemUtils: FakeValidOperatingSystemUtils(
-                'Microsoft Windows [versão 10.0.22621.1105]'));
+                'Microsoft Windows [versão 10.0.22621.1105]'),
+            processLister: ofdNotRunning());
 
     final ValidationResult result = await windowsVersionValidator.validate();
 
@@ -70,7 +115,8 @@ void main() {
     final WindowsVersionValidator windowsVersionValidator =
         WindowsVersionValidator(
             operatingSystemUtils: FakeValidOperatingSystemUtils(
-                'Microsoft Windows [Version 8.0.22621.1105]'));
+                'Microsoft Windows [Version 8.0.22621.1105]'),
+            processLister: ofdNotRunning());
 
     final ValidationResult result = await windowsVersionValidator.validate();
 
@@ -99,4 +145,28 @@ OS 版本:          10.0.22621 暂缺 Build 22621
     expect(matches.length, 5,
         reason: 'There should be only 5 matches for the pattern provided');
   });
+
+  testWithoutContext('Successfully checks for Topaz OFD when it is running', () async {
+    final WindowsVersionValidator validator =
+        WindowsVersionValidator(
+            operatingSystemUtils: FakeValidOperatingSystemUtils(),
+            processLister: ofdRunning());
+    final ValidationResult result = await validator.validate();
+    expect(result.type, ofdFoundRunning.type, reason: 'The ValidationResult type should be the same (partial)');
+    expect(result.statusInfo, ofdFoundRunning.statusInfo, reason: 'The ValidationResult statusInfo should be the same');
+    expect(result.messages.length, 1, reason: 'The ValidationResult should have precisely 1 message');
+    expect(result.messages[0].message, ofdFoundRunning.messages[0].message, reason: 'The ValidationMessage message should be the same');
+  });
+
+  testWithoutContext('Reports failure of Get-Process', () async {
+    final WindowsVersionValidator validator =
+        WindowsVersionValidator(
+            operatingSystemUtils: FakeValidOperatingSystemUtils(),
+            processLister: failure());
+    final ValidationResult result = await validator.validate();
+    expect(result.type, getProcessFailed.type, reason: 'The ValidationResult type should be the same (partial)');
+    expect(result.statusInfo, getProcessFailed.statusInfo, reason: 'The ValidationResult statusInfo should be the same');
+    expect(result.messages.length, 1, reason: 'The ValidationResult should have precisely 1 message');
+    expect(result.messages[0].message, getProcessFailed.messages[0].message, reason: 'The ValidationMessage message should be the same');
+  });
 }