Error while lauching my app about free-rasp-flutter

[talsec-app]

Hello.

Thank you for your work. We can confirm that issue is caused by this problem. Our plugin was written when null-safety was out for quite a long time. Our constructor uses required keyword which does not allow null values and also makes named parameters mandatory. Older SDKs will not recognize this though.

expectedSigningHash, expectedPackageName (in AndroidConfig) and appBundleId, appTeamId (for IOSConfig) are mandatory.

This issue will be fixed in next release.

We would like to ask @Pacane and @urbanjagodic if this solved their issue or the issue persists.

Thank you for your cooperation.
Talsec Team

[talsec-app]

Hello.
We have just released new version of freeRASP which contains API nullchecks which should prevent invalid usage associated with crashes.
Talsec Team

[urbanjagodic]

Same issue here.

Tried it with a physical android device (OS 11) and an android emulator, but the issue persists.
Both happen in a debug build mode.

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.8.1, on Ubuntu 20.04.3 LTS 5.13.0-27-generic,)

[talsec-app]

Thank you for your submission, we will try to reproduce this issue and get back to you with solution.

[talsec-app]

Hello.
To be able to precisely pinpoint the problem, we need to ask for further details:
Does it happen on simulator/emulator or real device (or both)?
Does it happen on Android or iOS or both?
Does it happen on dev or release or both?

[lcuis]

I get the same issue with the following message:

E/MethodChannel#plugins.aheaditec.com/config(20612): Failed to handle method call
E/MethodChannel#plugins.aheaditec.com/config(20612): java.lang.NullPointerException
E/MethodChannel#plugins.aheaditec.com/config(20612): 	at com.aheaditec.freerasp.FreeraspPlugin.onMethodCall(FreeraspPlugin.kt:29)
E/MethodChannel#plugins.aheaditec.com/config(20612): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/MethodChannel#plugins.aheaditec.com/config(20612): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:84)
E/MethodChannel#plugins.aheaditec.com/config(20612): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:865)
E/MethodChannel#plugins.aheaditec.com/config(20612): 	at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#plugins.aheaditec.com/config(20612): 	at android.os.MessageQueue.next(MessageQueue.java:335)
E/MethodChannel#plugins.aheaditec.com/config(20612): 	at android.os.Looper.loop(Looper.java:206)
E/MethodChannel#plugins.aheaditec.com/config(20612): 	at android.app.ActivityThread.main(ActivityThread.java:8595)
E/MethodChannel#plugins.aheaditec.com/config(20612): 	at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#plugins.aheaditec.com/config(20612): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
E/MethodChannel#plugins.aheaditec.com/config(20612): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
E/flutter (20612): [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: PlatformException(error, null, null, java.lang.NullPointerException
E/flutter (20612): 	at com.aheaditec.freerasp.FreeraspPlugin.onMethodCall(FreeraspPlugin.kt:29)
E/flutter (20612): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/flutter (20612): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:84)
E/flutter (20612): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:865)
E/flutter (20612): 	at android.os.MessageQueue.nativePollOnce(Native Method)
E/flutter (20612): 	at android.os.MessageQueue.next(MessageQueue.java:335)
E/flutter (20612): 	at android.os.Looper.loop(Looper.java:206)
E/flutter (20612): 	at android.app.ActivityThread.main(ActivityThread.java:8595)
E/flutter (20612): 	at java.lang.reflect.Method.invoke(Native Method)
E/flutter (20612): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
E/flutter (20612): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
E/flutter (20612): )
E/flutter (20612): #0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:607:7)
E/flutter (20612): #1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156:18)
E/flutter (20612): <asynchronous suspension>
E/flutter (20612): #2      MethodChannel.invokeListMethod (package:flutter/src/services/platform_channel.dart:342:35)
E/flutter (20612): <asynchronous suspension>
E/flutter (20612): 

======== Exception caught by services library ======================================================
The following MissingPluginException was thrown while activating platform stream on channel plugins.aheaditec.com/events:
MissingPluginException(No implementation found for method listen on channel plugins.aheaditec.com/events)

When the exception was thrown, this was the stack: 
#0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:154:7)
<asynchronous suspension>
#1      EventChannel.receiveBroadcastStream.<anonymous closure> (package:flutter/src/services/platform_channel.dart:486:9)
<asynchronous suspension>
====================================================================================================

I followed these instructions, but this did not change the outcome:

I get this in release and debug on a physical device using android 11.

Please meet my doctor:

flutter doctor --verbose
[✓] Flutter (Channel stable, 2.5.3, on Debian GNU/Linux 11 (bullseye) 5.10.0-9-amd64, locale en_US.UTF-8)
    • Flutter version 2.5.3 at /home/x/progs/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 18116933e7 (3 months ago), 2021-10-15 10:46:35 -0700
    • Engine revision d3ea636dc5
    • Dart version 2.14.4

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /home/x/progs/androidSDK
    • Platform android-31, build-tools 31.0.0
    • Java binary at: /home/x/progs/android-studio/jre/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
    • All Android licenses accepted.

[✓] Chrome - develop for the web
    • Chrome at google-chrome

[✓] Linux toolchain - develop for Linux desktop
    • Debian clang version 11.0.1-2
    • cmake version 3.18.4
    • ninja version 1.10.1
    • pkg-config version 0.29.2

[✓] Android Studio (version 2020.3)
    • Android Studio at /home/x/progs/android-studio
    • Flutter plugin version 62.0.1
    • Dart plugin version 203.8452
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)

[✓] Android Studio
    • Android Studio at /home/x/progs/android-studio/
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • android-studio-dir = /home/x/progs/android-studio/
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)

[✓] Connected device (3 available)
    • SM A037F (mobile) • X • android-arm64  • Android 11 (API 30)
    • Linux (desktop)   • linux       • linux-x64      • Debian GNU/Linux 11 (bullseye) 5.10.0-9-amd64
    • Chrome (web)      • chrome      • web-javascript • Google Chrome 96.0.4664.45

• No issues found!

[lcuis]

This issue does not happen for me on a new blank flutter app.

[lcuis]

Here is the content of my android/gradle/wrapper/gradle-wrapper.properties file for the failing project:

#Fri Jun 23 08:50:38 CEST 2017
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-all.zip

For the working project:

#Fri Jun 23 08:50:38 CEST 2017
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip

The android/buid.gradle files are aligned in both projects:

buildscript {
    ext.kotlin_version = '1.5.21'
    repositories {
        google()
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        google()
        mavenCentral()
        maven {url "[https://nexus3-public.monetplus.cz/repository/ahead-talsec-free-rasp]" }
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
    project.evaluationDependsOn(':app')
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

I aligned the android/app/build.gradle files except for the compileSdkVersion:

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
    flutterVersionCode = '1'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0'
}

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion 30

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    kotlinOptions {
        jvmTarget = '1.8'
    }

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.example.trying_rasp"
        minSdkVersion 21
        targetSdkVersion 30
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
//    releaseImplementation 'com.aheaditec.talsec.security:TalsecSecurity-Community:3.1.0-release'
//    debugImplementation 'com.aheaditec.talsec.security:TalsecSecurity-Community:3.1.0-dev'
//    implementation 'com.aheaditec.talsec.security:TalsecSecurity-Community:3.1.0-dev'
    implementation 'com.aheaditec.talsec.security:TalsecSecurity-Community:3.1.0-release'
}

Here is why I had to keep compileSdkVersion 31 in my original project:

Launching lib/main.dart on SM A037F in debug mode...
Running Gradle task 'assembleDebug'...

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:checkDebugAarMetadata'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.CheckAarMetadataWorkAction
   > The minCompileSdk (31) specified in a
     dependency's AAR metadata (META-INF/com/android/build/gradle/aar-metadata.properties)
     is greater than this module's compileSdkVersion (android-30).
     Dependency: androidx.work:work-runtime:2.7.0.
     AAR metadata file: /home/x/.gradle/caches/transforms-2/files-2.1/502c2f840b10fb1c326115a8cffd99c6/work-runtime-2.7.0/META-INF/com/android/build/gradle/aar-metadata.properties.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 30s
Exception: Gradle task assembleDebug failed with exit code 1

I still get the same error message while the empty project runs freerasp.

Is there another difference I should try to detect?

[talsec-app]

Hello.
We are trying very hard to replicate, identify and solve problem. We found some possible solutions to your problem.
Troubleshooting:

• Uninstall application from device and let Flutter install it again (flutter run)
• Run flutter clean and then re-run (not hot restart) application
• Try to remove other Flutter packages from dependencies and run project only with freerasp. There could be some compatiblity issues with other packages.

[lcuis]

Hi @talsec-app ,

Thanks for your help!

I just tried the following:

• flutter clean
• uninstall from device
• flutter run

I still get the same error message.

E/MethodChannel#plugins.aheaditec.com/config(29703): Failed to handle method call
E/MethodChannel#plugins.aheaditec.com/config(29703): java.lang.NullPointerException
E/MethodChannel#plugins.aheaditec.com/config(29703):    at com.aheaditec.freerasp.FreeraspPlugin.onMethodCall(FreeraspPlugin.kt:29)
E/MethodChannel#plugins.aheaditec.com/config(29703):    at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/MethodChannel#plugins.aheaditec.com/config(29703):    at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:84)
E/MethodChannel#plugins.aheaditec.com/config(29703):    at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:865)
E/MethodChannel#plugins.aheaditec.com/config(29703):    at android.os.MessageQueue.nativePollOnce(Native Method)
E/MethodChannel#plugins.aheaditec.com/config(29703):    at android.os.MessageQueue.next(MessageQueue.java:335)
E/MethodChannel#plugins.aheaditec.com/config(29703):    at android.os.Looper.loop(Looper.java:206)
E/MethodChannel#plugins.aheaditec.com/config(29703):    at android.app.ActivityThread.main(ActivityThread.java:8595)
E/MethodChannel#plugins.aheaditec.com/config(29703):    at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#plugins.aheaditec.com/config(29703):    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
E/MethodChannel#plugins.aheaditec.com/config(29703):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
Activating Dart DevTools...                                        10.3s
E/flutter (29703): [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: PlatformException(error, null, null, java.lang.NullPointerException
E/flutter (29703):      at com.aheaditec.freerasp.FreeraspPlugin.onMethodCall(FreeraspPlugin.kt:29)
E/flutter (29703):      at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/flutter (29703):      at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:84)
E/flutter (29703):      at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:865)
E/flutter (29703):      at android.os.MessageQueue.nativePollOnce(Native Method)
E/flutter (29703):      at android.os.MessageQueue.next(MessageQueue.java:335)
E/flutter (29703):      at android.os.Looper.loop(Looper.java:206)
E/flutter (29703):      at android.app.ActivityThread.main(ActivityThread.java:8595)
E/flutter (29703):      at java.lang.reflect.Method.invoke(Native Method)
E/flutter (29703):      at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
E/flutter (29703):      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
E/flutter (29703): )
E/flutter (29703): #0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:607:7)
E/flutter (29703): #1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156:18)
E/flutter (29703): <asynchronous suspension>
E/flutter (29703): #2      MethodChannel.invokeListMethod (package:flutter/src/services/platform_channel.dart:342:35)
E/flutter (29703): <asynchronous suspension>
E/flutter (29703): 

══╡ EXCEPTION CAUGHT BY SERVICES LIBRARY ╞══════════════════════════════════════════════════════════
The following MissingPluginException was thrown while activating platform stream on channel
plugins.aheaditec.com/events:
MissingPluginException(No implementation found for method listen on channel
plugins.aheaditec.com/events)

When the exception was thrown, this was the stack:
#0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:154:7)
<asynchronous suspension>
#1      EventChannel.receiveBroadcastStream.<anonymous closure>
(package:flutter/src/services/platform_channel.dart:486:9)
<asynchronous suspension>
════════════════════════════════════════════════════════════════════════════════════════════════════

I will now try removing the plugins one by one.

[lcuis]

I finally got rid of all the plugins in my project and I still have the same issue.

Is there something else I can do?

[lcuis]

I got it to work with a non-functional project.
I had to migrate to null-safety with a sdk: '>=2.12.0 <3.0.0' line in pubspec.yaml. This somehow forced me to define the expectedSigningCertificateHash.

I rolled back to before the null-safety migration and the plugins removal, I added the expectedSigningCertificateHash parameter and the project runs as expected.

So, my issue was the missing expectedSigningCertificateHash parameter.

[yakim333]

Same issue here.

Tried it with a physical android device (OS 11) and an android emulator, but the issue persists. Both happen in a debug build mode.

Doctor summary (to see all details, run flutter doctor -v): [✓] Flutter (Channel stable, 2.8.1, on Ubuntu 20.04.3 LTS 5.13.0-27-generic,)

Hi @urbanjagodic, does this resolution solve your issue?

[Developer1414]

@talsec-app When I start the application, I get an error like this and the application crashes:

W/AudioCapabilities( 4638): Unsupported mime audio/x-ms-wma W/VideoCapabilities( 4638): Unsupported mime video/divx W/VideoCapabilities( 4638): Unsupported mime video/x-flv W/VideoCapabilities( 4638): Unsupported mime video/vnd.rn-realvideo W/VideoCapabilities( 4638): Unsupported mime video/vc1 W/VideoCapabilities( 4638): Unsupported mime video/ffmpeg W/VideoCapabilities( 4638): Unsupported mime video/x-ms-wmv E/AndroidRuntime( 4638): FATAL EXCEPTION: main E/AndroidRuntime( 4638): Process: com.revens.mini.casino, PID: 4638 E/AndroidRuntime( 4638): java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.revens.mini.casino-2/base.apk"],nativeLibraryDirectories=[/data/app/com.revens.mini.casino-2/lib/x86, /data/app/com.revens.mini.casino-2/base.apk!/lib/x86, /system/lib, /vendor/lib, /data/downloads, /data/priv-downloads]]] couldn't find "libpolarssl.so" E/AndroidRuntime( 4638): at java.lang.Runtime.loadLibrary0(Runtime.java:994) E/AndroidRuntime( 4638): at java.lang.System.loadLibrary(System.java:1562) E/AndroidRuntime( 4638): at com.aheaditec.talsec.security.z1.<clinit>(SourceFile:1) E/AndroidRuntime( 4638): at com.aheaditec.talsec.security.y1.<init>(SourceFile:5) E/AndroidRuntime( 4638): at com.aheaditec.talsec.security.y1.a(SourceFile:4) E/AndroidRuntime( 4638): at com.aheaditec.talsec_security.security.api.Talsec.start(SourceFile:1) E/AndroidRuntime( 4638): at com.aheaditec.freerasp.TalsecApp.init(TalsecApp.kt:27) E/AndroidRuntime( 4638): at com.aheaditec.freerasp.MethodCallHandlerImpl.init(MethodCallHandlerImpl.kt:54) E/AndroidRuntime( 4638): at com.aheaditec.freerasp.MethodCallHandlerImpl.onMethodCall(MethodCallHandlerImpl.kt:21) E/AndroidRuntime( 4638): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:258) E/AndroidRuntime( 4638): at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:295) E/AndroidRuntime( 4638): at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:322) E/AndroidRuntime( 4638): at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(D8$$SyntheticClass) E/AndroidRuntime( 4638): at android.os.Handler.handleCallback(Handler.java:751) E/AndroidRuntime( 4638): at android.os.Handler.dispatchMessage(Handler.java:95) E/AndroidRuntime( 4638): at android.os.Looper.loop(Looper.java:154) E/AndroidRuntime( 4638): at android.app.ActivityThread.main(ActivityThread.java:6138) E/AndroidRuntime( 4638): at java.lang.reflect.Method.invoke(Native Method) E/AndroidRuntime( 4638): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:893) E/AndroidRuntime( 4638): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:783) I/Process ( 4638): Sending signal. PID: 4638 SIG: 9 Lost connection to device. Exited (sigterm)

[Developer1414]

@talsec-app My code, executed in initState, looks like this:

`Future initSecurityState() async {
TalsecConfig config = TalsecConfig(
androidConfig: AndroidConfig(
expectedPackageName: 'com.revens.mini.casino',
expectedSigningCertificateHashes: [
'SmdUsJDwb6Zlk*****IgbO5uEA4tkiJU='
],
),
watcherMail: '[email protected]',
);

TalsecCallback callback = TalsecCallback(
    androidCallback: AndroidCallback(
  onRootDetected: () => print('root'),
  onEmulatorDetected: () => print('emulator'),
  onHookDetected: () => print('hook'),
  onTamperDetected: () => print('tamper'),
  onDeviceBindingDetected: () => print('device binding'),
  onUntrustedInstallationDetected: () => print('untrusted install'),
));

TalsecApp app = TalsecApp(
  config: config,
  callback: callback,
);

app.start();

}`

[msikyna]

Hello @Developer1414 ,

the app is crashing because there is a missing x86 native module.
java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.revens.mini.casino-2/base.apk"],nativeLibraryDirectories=[/data/app/com.revens.mini.casino-2/lib/x86, /data/app/com.revens.mini.casino-2/base.apk!/lib/x86

Flutter officially supports only some ABIs in the release mode, and platform x86 is not included (more information here - https://docs.flutter.dev/deployment/android#what-are-the-supported-target-architectures). Because of that, we decided to distribute our library also without the x86 support.

This issue should only affect the development process (as the release mode does not support the x86 platform anyway). If you are running the application on Emulator, we recommend downloading an Android image with supported ABI. If you have any questions, please let us know.

Best regards,
Talsec team