AndroidX Security EncryptedSharedPreferences v1.1.0 /w API 21 issue - android

I decided to use new EncryptedSharedPreferences from AndroidX Security library. Since the app is supporting API 21 and higher, I decided to try out this new v1.1.0-alpha02 version, since it supports API 21+
So, I succeded to make the implementation for API 23+, but for older versions where Android KeyStore is not supported, I couldn't make it right, and there are no exact instructions how the master key should be created to make it work somehow.
The code for initializing SharedPrefs:
EncryptedSharedPreferences.create(
"prefs_name",
createMasterKey(),
App.appContext,
EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
)
with this function for creating master key
private fun createMasterKey(): String {
return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC)
} else {
val alias = "my_alias"
val start: Calendar = GregorianCalendar()
val end: Calendar = GregorianCalendar()
end.add(Calendar.YEAR, 30)
val spec = KeyPairGeneratorSpec.Builder(App.appContext)
.setAlias(alias)
.setSubject(X500Principal("CN=$alias"))
.setSerialNumber(BigInteger.valueOf(abs(alias.hashCode()).toLong()))
.setStartDate(start.time).setEndDate(end.time)
.build()
val kpGenerator: KeyPairGenerator = KeyPairGenerator.getInstance(
"RSA",
"AndroidKeyStore"
)
kpGenerator.initialize(spec)
val kp: KeyPair = kpGenerator.generateKeyPair()
kp.public.toString()
}
}
I found this solution somewhere out there, but it's not verified (no confirmation that it actually works), but it seems it should work.
When using this code block for API 21 and 22, the error appears on creating EncryptedSharedPreferences, and it says:
Method threw 'com.google.crypto.tink.shaded.protobuf.InvalidProtocolBufferException' exception.
Protocol message contained an invalid tag (zero).
Did someone find the solution for this implementation, or do you know why is this happening?
I think this would help a lot of people, since there is no exact explanation what should this master key contain.
Thanks in advance!

Add to manifest
android:allowBackup="false" android:fullBackupContent="false"
Because after uninstalling the application you still have backed up your crypto file which you definitely can't decrypt after installing a new version.

I can fix the InvalidProtocolBufferException in two ways, though I don't like either of them:
Use an older version of security-crypto
implementation 'androidx.security:security-crypto:1.1.0-alpha01'
Use the latest (at the time of writing) version of security-crypto, but with a forced older version of tink:
implementation 'androidx.security:security-crypto:1.1.0-alpha03'
implementation('com.google.crypto.tink:tink-android') {
version {
strictly '1.4.0'
}
}

Here is what I have done, it seems to have fixed the error. Instead of removing the auto-backup feature, just do this:
In AndroidManifest.xml
android:allowBackup="true"
android:fullBackupContent="#xml/backup_descriptor"
In backup_descriptor.xml
<full-backup-content>
<exclude domain="sharedpref" path="keys.xml"/>
</full-backup-content>
keys.xml being the encrypted shared preference file name. Exclude all encrypted shared preference files this way.
Also, I am using
implementation 'androidx.security:security-crypto:1.1.0-alpha02'
for now, seems like everything is working well with this setup.

UPDATE: Errors on different devices. The result isn't the solution.
I setup the android propreties "fullbackupcontent" this way in my Manifest
android:fullBackupContent="#xml/backup_descriptor"
Here is my backup_descriptor file
<?xml version="1.0" encoding="utf-8"?>
<full-backup-content>
<!-- App data isn't included in user's backup unless client-side encryption is enabled. -->
<include domain="file" path="." requireFlags="clientSideEncryption" />
<!-- Exclude specific shared preferences that contain GCM registration Id -->
<!-- <exclude domain=["file" | "database" | "sharedpref" | "external" | "root"]-->
<!-- path="string" />-->
</full-backup-content>
Now my app is working again & I can keep allowing backups.
Source :
https://developer.android.com/guide/topics/data/autobackup#define-device-conditions
https://developer.android.com/guide/topics/data/autobackup#IncludingFiles

Here is a different solution that I found on google issue tracker.
As google document stated, "Note: The methods in both the EncryptedFile class and the EncryptedSharedPreferences class aren't thread-safe." You need to wrap the calling in a synchronised method.
#synchronized
fun createSharedPreferences() {
val keyGenParameterSpec = MasterKeys.AES256_GCM_SPEC
val masterKeyAlias = MasterKeys.getOrCreate(keyGenParameterSpec)
prefs = EncryptedSharedPreferences.create(
"file-name",
masterKeyAlias,
context,
PrefKeyEncryptionScheme.AES256_SIV,
PrefValueEncryptionScheme.AES256_GCM)
}
src. https://issuetracker.google.com/issues/147480931#comment19

Related

AndroidRuntime: FATAL EXCEPTION: androidmapsapi-ZoomTableManager

My app that uses Google Maps SDK (v2) just started crashing with this exception:
Process: com.currentlocation.android, PID: 7328
java.lang.ArrayIndexOutOfBoundsException: length=1; index=12
at com.google.maps.api.android.lib6.gmm6.vector.ct.<init>(:com.google.android.gms.dynamite_mapsdynamite#201216081#20.12.16 (120400-0):9)
at com.google.maps.api.android.lib6.gmm6.vector.cv.a(:com.google.android.gms.dynamite_mapsdynamite#201216081#20.12.16 (120400-0):23)
at com.google.maps.api.android.lib6.gmm6.util.m.run(:com.google.android.gms.dynamite_mapsdynamite#201216081#20.12.16 (120400-0):14)
at java.lang.Thread.run(Thread.java:919)
In the v3 beta SDK, the stack trace is:
2020-04-23 15:59:06.064 E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example, PID: 22717
java.lang.ArrayIndexOutOfBoundsException: length=1; index=12
at com.google.android.libraries.maps.bv.zzbs.<init>(ZoomTable.java:24)
at com.google.android.libraries.maps.bv.zzbv.zza(ZoomTableQuadTree.java:57)
at com.google.android.libraries.maps.br.zzd.zza(Unknown Source:4)
at com.google.android.libraries.maps.hi.zzas.zza(Suppliers.java:7)
at com.google.android.libraries.maps.br.zza.zzh(SharedMapComponentImpl.java:58)
at com.google.android.libraries.maps.gu.zzat.zza(RendererFactoryImpl.java:88)
at com.google.android.libraries.maps.it.zzav.zza(GoogleMapImpl.java:59)
at com.google.android.libraries.maps.it.zzci.zza(MapFragmentDelegateImpl.java:3)
at com.google.android.libraries.maps.it.zzcg.zza(MapFragmentDelegateImpl.java:15)
at com.google.android.libraries.maps.SupportMapFragment$zza.onCreateView(SupportMapFragment.java:15)
at com.google.android.gms.dynamic.zae.zaa(com.google.android.gms:play-services-base##17.1.0:4)
at com.google.android.gms.dynamic.DeferredLifecycleHelper.zaa(com.google.android.gms:play-services-base##17.1.0:9)
at com.google.android.gms.dynamic.DeferredLifecycleHelper.onCreateView(com.google.android.gms:play-services-base##17.1.0:25)
at com.google.android.libraries.maps.SupportMapFragment.onCreateView(SupportMapFragment.java:34)
at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2698)
at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:310)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1185)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1354)
at androidx.fragment.app.FragmentManager.moveFragmentToExpectedState(FragmentManager.java:1432)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1495)
at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:2617)
at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:2569)
at androidx.fragment.app.Fragment.performActivityCreated(Fragment.java:2722)
at androidx.fragment.app.FragmentStateManager.activityCreated(FragmentStateManager.java:336)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1186)
at androidx.fragment.app.FragmentManager.addAddedFragments(FragmentManager.java:2222)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1995)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1951)
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1847)
at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:2621)
at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:2569)
at androidx.fragment.app.Fragment.performActivityCreated(Fragment.java:2722)
at androidx.fragment.app.FragmentStateManager.activityCreated(FragmentStateManager.java:336)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1186)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1354)
at androidx.fragment.app.FragmentManager.moveFragmentToExpectedState(FragmentManager.java:1432)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1495)
at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:2617)
at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:2569)
at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:247)
at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:541)
at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:201)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1432)
at android.app.Activity.performStart(Activity.java:7848)
at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3294)
2020-04-23 15:59:06.064 E/AndroidRuntime: at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
What is the cause?
Edit: following is the official solution from Google (link)
Summary
Google Maps SDK thread crashes App (ArrayIndexOutOfBoundsException) - Solution Offered
Description
On April 23 2020 starting at 11:30 PDT, Google served for 4 hours an update to the configuration of a Maps mobile component, triggering crashes in Maps SDKs for Android and iOS. Applications on devices that downloaded this version of the configuration (during the outage period) were vulnerable to the crash. Workaround solutions are offered for Maps SDKs for Android and iOS.
Maps SDK for Android
Maps SDK for Android v2 (included in Google Play Services)
The updates to Google Play Services to fix the crash has been published to all devices with Google Play Services version 17.4.55 and newer. There is no change to the version number of Google Play Services on the device after the update is installed. No action is required from developers or end users to receive the updated Maps module; however, developers can verify that the module is present on a given device with the following adb command:
adb shell dumpsys activity provider com.google.android.gms.chimera.container.GmsModuleProvider
You should see the line Module Set ID: maps listed in the Module Sets section.
Module Set ID: maps, Module Set Version: 2015120015120000
The crash rates of Maps SDK for Android v2 are back to normal.
As of now, if you have not updated your app with the client-side code workarounds mentioned below, you do not need to take further action.
If you have already updated your app with the workarounds, you can remove the workaround in a subsequent update of your app (but keeping the workaround is safe).
Premium Plan Maps SDK for Android v2 or Maps SDK for Android v3 beta (static libraries)
If your app uses the Premium Plan Maps SDK for Android v2 or Maps SDK for Android v3 beta (static libraries), and is still experiencing crashes, we still highly recommend you to roll out the workarounds below via an update to your app. As your application is loading a static version of the SDK which is vulnerable to the bad data being stored on some devices, only an update to your application can solve the problem.
Play Store review approvals
If you update your app but experience Play Store review approvals delays, please file a support case with your app’s Package ID: ⁠Contact the support team. Our Support Team will internally escalate your request and expedite the approval.
Negative reviews in the Google Play Store
Some application developers inquired about 1-star reviews in the Google Play Store left by end-users due to crashes. Only comments that violate Google Play's policy [ 1 ] can be removed. You can also flag abusive reviews in the Play Console [ 2 ]. Applications will not be automatically removed from the Google Play store due to negative reviews. It's also worth noting that the calculation of your overall app review rating favors recent reviews, which means that your rating will recover to pre-incident levels over time.
[ 1 ] ⁠Ratings & Review on the Play Store
[ 2 ] ⁠Report inappropriate reviews
Maps SDK for iOS
Crash rates on iOS are back to normal. If your application is still experiencing crashes, you need to update and publish your app with the code workarounds communicated here.
For questions about deploying or expediting your application in the Apple App Store, please contact Apple directly.
With this update, we are closing this issue. Thank you to everyone for your patience. Our team is performing an in-depth internal investigation of this incident; as soon as possible, we will publish our analysis (in approximately a week). In the meantime, if you have any questions, or are still experiencing problems, please ⁠file a support case.
Workarounds:
End users on Android can clear the affected app's data (not just the
cache).
End users on iOS can uninstall then reinstall the affected app(s).
App Developers can apply the code workarounds below in order to solve
the issue for all their end users.
Code workaround for iOS:
Recommended placement for the code is before GMSServices initialization in the application(_:didFinishLaunchingWithOptions:) (Swift) or application:didFinishLaunchingWithOptions: (Objective-C) method. Specifically:
Swift:
let key = "GoogleMapsServerControlledParamsKey_bug_154855417"
if !UserDefaults.standard.bool(forKey: key) {
let urls = FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask)
if urls.count > 0 {
let paramUrl = urls[0].appendingPathComponent("com.google.GoogleMaps/ServerControlledParams", isDirectory: false)
try? FileManager.default.removeItem(at: paramUrl)
}
UserDefaults.standard.set(true, forKey: key)
}
Objective-C:
NSString *key = #"GoogleMapsServerControlledParamsKey_bug_154855417";
BOOL keyExists = [[NSUserDefaults standardUserDefaults] boolForKey:key];
if (!keyExists) {
NSArray<NSURL *> *array =
[[NSFileManager defaultManager] URLsForDirectory:NSApplicationSupportDirectory
inDomains:NSUserDomainMask];
if (array.count > 0) {
NSURL *url =
[array[0] URLByAppendingPathComponent:#"com.google.GoogleMaps/ServerControlledParams"
isDirectory:NO];
if (url) {
[[NSFileManager defaultManager] removeItemAtURL:url error:NULL];
}
}
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:key];
}
Code workaround for Android:
The recommended placement for the code is in Application.onCreate():
Java
try {
SharedPreferences hasFixedGoogleBug154855417 = getSharedPreferences("google_bug_154855417", Context.MODE_PRIVATE);
if (!hasFixedGoogleBug154855417.contains("fixed")) {
File corruptedZoomTables = new File(getFilesDir(), "ZoomTables.data");
File corruptedSavedClientParameters = new File(getFilesDir(), "SavedClientParameters.data.cs");
File corruptedClientParametersData =
new File(
getFilesDir(),
"DATA_ServerControlledParametersManager.data."
+ getBaseContext().getPackageName());
File corruptedClientParametersDataV1 =
new File(
getFilesDir(),
"DATA_ServerControlledParametersManager.data.v1."
+ getBaseContext().getPackageName());
corruptedZoomTables.delete();
corruptedSavedClientParameters.delete();
corruptedClientParametersData.delete();
corruptedClientParametersDataV1.delete();
hasFixedGoogleBug154855417.edit().putBoolean("fixed", true).apply();
}
} catch (Exception e) {
}
Kotlin
try {
val sharedPreferences = getSharedPreferences("google_bug_154855417", Context.MODE_PRIVATE)
if (!sharedPreferences.contains("fixed")) {
val corruptedZoomTables = File(filesDir, "ZoomTables.data")
val corruptedSavedClientParameters = File(filesDir, "SavedClientParameters.data.cs")
val corruptedClientParametersData = File(filesDir, "DATA_ServerControlledParametersManager.data.${packageName}")
val corruptedClientParametersDataV1 = File(filesDir, "DATA_ServerControlledParametersManager.data.v1.${packageName}")
corruptedZoomTables.delete()
corruptedSavedClientParameters.delete()
corruptedClientParametersData.delete()
corruptedClientParametersDataV1.delete()
sharedPreferences.edit().putBoolean("fixed", true).apply()
}
} catch (exception: Exception) {
}
The workarounds provided here covers all available flavors and versions of our SDKs for Android. To clarify further (in case you released an earlier version of the workaround that did not delete as many files):
Applications that use Maps Android SDK v2 should only need to delete
one file: ZoomTables.data.
Applications that use Maps Android SDK v3 beta should only need to
delete one file, either
DATA_ServerControlledParametersManager.data.v1. +
getBaseContext().getPackageName())
or
DATA_ServerControlledParametersManager.data. +
getBaseContext().getPackageName())
Seems in every app Google Map creates ZoomTables.data file.
This file was malformed, malformed version of it that could be downloaded from comment.
To reproduce the issue remove ZoomTables.data from the app packages on the device and insert malformed one. The app should crash.
Currently, the issue was solved on google's side, but the apps still contain a cached version of that data file.
To fix the issue we should remove that file right on the app start in Application onCreate Method.
private void fixGoogleMapBug() {
try {
SharedPreferences hasFixedGoogleBug154855417 = getSharedPreferences("google_bug_154855417", Context.MODE_PRIVATE);
if (!hasFixedGoogleBug154855417.contains("fixed")) {
File corruptedZoomTables = new File(getFilesDir(), "ZoomTables.data");
File corruptedSavedClientParameters = new File(getFilesDir(), "SavedClientParameters.data.cs");
File corruptedClientParametersData =
new File(
getFilesDir(),
"DATA_ServerControlledParametersManager.data."
+ getBaseContext().getPackageName());
File corruptedClientParametersDataV1 =
new File(
getFilesDir(),
"DATA_ServerControlledParametersManager.data.v1."
+ getBaseContext().getPackageName());
corruptedZoomTables.delete();
corruptedSavedClientParameters.delete();
corruptedClientParametersData.delete();
corruptedClientParametersDataV1.delete();
hasFixedGoogleBug154855417.edit().putBoolean("fixed", true).apply();
}
} catch (Exception e) {
}
}
Update 1
I've updated workaround, base on the latest google developers comment:
The workarounds provided here covers all available flavors and versions of our SDKs for Android. To clarify further (in case you released an earlier version of the workaround that did not delete as many files):
Applications that use Maps Android SDK v2 should only need to delete one file: ZoomTables.data.
Applications that use Maps Android SDK v3 beta should only need to delete one file, either DATA_ServerControlledParametersManager.data.v1. + getBaseContext().getPackageName()) or DATA_ServerControlledParametersManager.data. + getBaseContext().getPackageName())
This solution worked for me
First open "App Info"
Choose "Storage"
Click "Clear data"
Open app again and check if the issue fixed.
Below are suggestions just to help your customers.
Send an email to your all users for the inconvenience and describe them the issue they faced and give them above mentioned steps to resolve their issue.
You can also send Push Notification to all your users with Firebase Push Notifications, if your app have the push notifications service.
Screenshots demonstration:
Drawbacks of solutions above:
ZoomTables.data is deleted on every device, regardless of whether the device is affected by the crash or not
Workaround only works once, is it sure that this problem never happens again?
Drawbacks of my solution:
on first execution of maps activity on affected device map is empty. After rotation of device or second execution map is shown up
My solution catches the Exception thrown by the Maps SDK, call this in onCreate of the Application class:
public static void catchGoogleMapsException(final Context context)
{
final Thread.UncaughtExceptionHandler defaultHandler =
Thread.getDefaultUncaughtExceptionHandler();
Thread.setDefaultUncaughtExceptionHandler(
(#NonNull final Thread thread, #NonNull final Throwable ex) ->
{
if (thread.getName().contains("ZoomTableManager"))
{
new File(context.getFilesDir(), "ZoomTables.data").delete();
Log.w("Maps Bug 154855417", "Caught exception and deleted ZoomTables.data");
}
else
if (defaultHandler!=null)
defaultHandler.uncaughtException(thread, ex);
else
throw new RuntimeException(
"No default uncaught exception handler.", ex);
});
}
Solution Offered for iOS & Android:
https://issuetracker.google.com/issues/154855417#comment509
Maps SDK for Android v2 (included in Google Play Services)
The updates to Google Play Services to fix the crash has been published to all devices with Google Play Services version 17.4.55 and newer. There is no change to the version number of Google Play Services on the device after the update is installed. No action is required from developers or end users to receive the updated Maps module; however, developers can verify that the module is present on a given device with the following adb command:
adb shell dumpsys activity provider com.google.android.gms.chimera.container.GmsModuleProvider
You should see the line Module Set ID: maps listed in the Module Sets section.
Module Set ID: maps, Module Set Version: 2015120015120000
The crash rates of Maps SDK for Android v2 are back to normal.
As of now, if you have not updated your app with the client-side code
workarounds mentioned below, you do not need to take further action.
If you have already updated your app with the workarounds, you can
remove the workaround in a subsequent update of your app (but keeping
the workaround is safe).
Code workaround for Android:
The productive version was fixed (on google's side) but if you still have problems with your emulator you have to run the following code only once.
The recommended placement for the code is in Application.onCreate():
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
fixGoogleMapBugTemp() //TODO: Then clean this line
// ...
}
/**
* Observation: Invoke this method only once
*/
private fun fixGoogleMapBugTemp() {
val googleBug = getSharedPreferences("google_bug_154855417", Context.MODE_PRIVATE)
if (!googleBug.contains("fixed")) {
val corruptedZoomTables = File(filesDir, "ZoomTables.data");
corruptedZoomTables.delete();
googleBug.edit().putBoolean("fixed", true).apply();
}
}
Workaround: Clear application data (not just the cache).
Note: A copy of the problematic file from the app packages on the device if anyone needs it for repro.
Source
GL
For Android, multiple developers mentioned a workaround consisting in deleting the ZoomTable.data file directly from their application. After review, this fix seems safe, and you could try it in your application.
Please refer to
https://issuetracker.google.com/154855417#comment179
If you want your users to continue using your app without re-installing,
The sample code is copy-pasted here for your convenience. In Application.onCreate():
SharedPreferences googleBug = getSharedPreferences("google_bug_154855417", Context.MODE_PRIVATE);
if (!googleBug.contains("fixed")) {
File corruptedZoomTables = new File(getFilesDir(), "ZoomTables.data");
corruptedZoomTables.delete();
googleBug.edit().putBoolean("fixed", true).apply();
}
reference: Google Maps SDK is crashing -- partially resolved
Complete & official answer for all :
Diagnosis: Crash of the Google Maps Platform mobile SDKs (iOS & Android) at load.
Workaround: * Clear the affected app's data (not just the cache), or uninstall then reinstall the affected app(s).
Code workaround for iOS:
Recommended placement for the code is before GMSServices initialization in the application(_:didFinishLaunchingWithOptions:) (Swift) or application:didFinishLaunchingWithOptions: (Objective-C) method. Specifically:
Swift:
let key = "GoogleMapsServerControlledParamsKey_bug_154855417"
if !UserDefaults.standard.bool(forKey: key) {
let urls = FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask)
if urls.count > 0 {
let paramUrl = urls[0].appendingPathComponent("com.google.GoogleMaps/ServerControlledParams", isDirectory: false)
try? FileManager.default.removeItem(at: paramUrl)
}
UserDefaults.standard.set(true, forKey: key)
}
Objective-C:
NSString *key = #"GoogleMapsServerControlledParamsKey_bug_154855417";
BOOL keyExists = [[NSUserDefaults standardUserDefaults] boolForKey:key];
if (!keyExists) {
NSArray<NSURL *> *array =
[[NSFileManager defaultManager] URLsForDirectory:NSApplicationSupportDirectory
inDomains:NSUserDomainMask];
if (array.count > 0) {
NSURL *url =
[array[0] URLByAppendingPathComponent:#"com.google.GoogleMaps/ServerControlledParams"
isDirectory:NO];
if (url) {
[[NSFileManager defaultManager] removeItemAtURL:url error:NULL]);
}
}
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:key];
}
Once you have deployed it in your app, you can file a Maps Support case if you would like us to help expedite its approval. Please make sure to include your application's ID, Bundle ID, and the version you want reviewed in your case.
Code workaround for Android:
The recommended placement for the code is in Application.onCreate():
Java
try {
SharedPreferences hasFixedGoogleBug154855417 = getSharedPreferences("google_bug_154855417", Context.MODE_PRIVATE);
if (!hasFixedGoogleBug154855417.contains("fixed")) {
File corruptedZoomTables = new File(getFilesDir(), "ZoomTables.data");
File corruptedSavedClientParameters = new File(getFilesDir(), "SavedClientParameters.data.cs");
File corruptedClientParametersData =
new File(
getFilesDir(),
"DATA_ServerControlledParametersManager.data.v1."
+ getBaseContext().getPackageName());
corruptedZoomTables.delete();
corruptedSavedClientParameters.delete();
corruptedClientParametersData.delete();
hasFixedGoogleBug154855417.edit().putBoolean("fixed", true).apply();
}
} catch (Exception e) {
}
Kotlin
try {
val sharedPreferences = getSharedPreferences("google_bug_154855417", Context.MODE_PRIVATE)
if (!sharedPreferences.contains("fixed")) {
val corruptedZoomTables = File(filesDir, "ZoomTables.data")
val corruptedSavedClientParameters = File(filesDir, "SavedClientParameters.data.cs")
val corruptedClientParametersData = File(filesDir, "DATA_ServerControlledParametersManager.data.v1.${packageName}")
corruptedZoomTables.delete()
corruptedSavedClientParameters.delete()
corruptedClientParametersData.delete()
sharedPreferences.edit().putBoolean("fixed", true).apply()
}
} catch (exception: Exception) {
}
Source : https://issuetracker.google.com/issues/1548554
You should call the follow method on the onCreate of your Android app to avoid the crash.
private fun clearCorruptedGMapsPreference() {
try {
val sharedPreferences = getSharedPreferences("google_bug_154855417", Context.MODE_PRIVATE)
if (!sharedPreferences.contains("fixed")) {
val corruptedZoomTables = File(filesDir, "ZoomTables.data")
val corruptedSavedClientParameters = File(filesDir, "SavedClientParameters.data.cs")
val corruptedClientParametersData = File(filesDir, "DATA_ServerControlledParametersManager.data.${packageName}")
val corruptedClientParametersDataV1 = File(filesDir, "DATA_ServerControlledParametersManager.data.v1.${packageName}")
corruptedZoomTables.delete()
corruptedSavedClientParameters.delete()
corruptedClientParametersData.delete()
corruptedClientParametersDataV1.delete()
sharedPreferences.edit().putBoolean("fixed", true).apply()
}
} catch (exception: Exception) {
LogUtil.e(this#CourierApplication::class.java.name, "An error has happened. Error: ".plus(exception.cause?.message
?: ""))
}
}
This is working code for Xamarin. You need to install Xamarin.Essentials nuget package.
if (!Preferences.Get("google_bug_fixed", false))
{
var corruptedZoomTables = new File(FileSystem.AppDataDirectory, "ZoomTables.data");
corruptedZoomTables.Delete();
Preferences.Set("google_bug_fixed", true);
}
Workaround suggested will only work one time:
I suggest to send a silent push notification to your app about Google Map Zoom Data Corrupted or make an API call to check the status of the Google Map Zoom Data. If you think this as un-necessary server call every time, you can either use push notification to trigger this logic or integrate with one of your existing calls where you check status of your servers. Leaving this to your app specific logics.Doing so, if Google Maps again throws this error you can re-trigger your work-around.
If server call, this will reset ZoomData for all your users.
If push-notifications, you can send notifications to some users.
fun receivedPushNotificationZoomDataCorrupted() {
try {
val corruptedZoomTables = File(filesDir, "ZoomTables.data")
val corruptedSavedClientParameters = File(filesDir, "SavedClientParameters.data.cs")
val corruptedClientParametersData = File(filesDir, "DATA_ServerControlledParametersManager.data.v1.${packageName}")
corruptedZoomTables.delete()
corruptedSavedClientParameters.delete()
corruptedClientParametersData.delete()
}
} catch (exception: Exception) {
}
}

AndroidKeyStore no such provider

I'm just trying to get a basic example of the Android Key Store system to generate a symmetric key. I followed the example in the tutorial (using Kotlin) but I get an error like so:
java.security.NoSuchProviderException: no such provider: AndroidKeyStore
Below is my code where the compiler is throwing an error:
val kpg: KeyGenerator = KeyGenerator.getInstance("DES", "AndroidKeyStore")
On my Gradle, I am using compileSdkVersion and targetSdkVersion to 28. I'm also have a minSdkVersion of 25. All of which should satisfy the Android's doc on using the AndroidKeyStore (min API level 18).
If I remove the provider, everything works like planned, since I'm assuming it goes to the default provider. The same goes for the KeyPairGenerator and KeyStore classes when I try the AndroidKeyStore provider.
Am I using the wrong provider keyword? Or is there some additional setup that I'm supposed to be doing?
Thanks,
Update 1 - So I kept searching and found that you can get a list of available providers on my system. Here's my code below:
for (p in Security.getProviders()) {
//Log.d(TAG, String.format("== %s ==", p.getName()))
println(String.format("== %s ==", p.getName()))
println(String.format("%s", p.info))
// for (s in p.getServices()) {
// //Log.d(TAG, String.format("- %s", s.getAlgorithm()))
// println(String.format("- %s", s.getAlgorithm()))
// }
}
Also, the results match what's in my $JAVA_HOME/jre/lib/security.java.security file:
security.provider.1=sun.security.provider.Sun
security.provider.2=sun.security.rsa.SunRsaSign
security.provider.3=sun.security.ec.SunEC
security.provider.4=com.sun.net.ssl.internal.ssl.Provider
security.provider.5=com.sun.crypto.provider.SunJCE
security.provider.6=sun.security.jgss.SunProvider
security.provider.7=com.sun.security.sasl.Provider
security.provider.8=org.jcp.xml.dsig.internal.dom.XMLDSigRI
security.provider.9=sun.security.smartcardio.SunPCSC
security.provider.10=apple.security.AppleProvider
So I guess my option is to add the AndroidKeyStore provider to this. I'll update this when I've tried that.
I found out that there's a bug at the moment with using the AndroidKeyStore with unit tests, which I didn't mention in my original question.
See here:
https://github.com/robolectric/robolectric/issues/1518

Titanium Hyperloop access to android.os.SystemProperties

I have been trying a ( i hope) simple bit of Android hyperloop code directly within a titanium project (using SDK 7.0.1.GA and hyperloop 3).
var sysProp = require('android.os.SystemProperties');
var serialNumber = sysProp.get("sys.serialnumber", "none");
But when the app is run it reports
Requested module not found:android.os.SystemProperties
I think this maybe due to the fact that when compiling the app (using the cli) it reports
hyperloop:generateSources: Skipping Hyperloop wrapper generation, no usage found ...
I have similar code in a jar and if I use this then it does work, so I am wondering why the hyperloop generation is not being triggered, as I assume that is the issue.
Sorry should have explained better.
This is the jar source that I use, the extraction of the serial number was just an example (I need access to other info manufacturer specific data as well), I wanted to see if I could replicate the JAR functionality using just hyperloop rather that including the JAR file. Guess if it's not broke don't fix it, but was curious to see if it could be done.
So with the feedback from #miga and a bit of trial and error, I have come up with a solution that works really well and will do the method reflection that is required. My new Hyperloop function is
function getData(data){
var result = false;
var Class = require("java.lang.Class");
var String = require("java.lang.String");
var c = Class.forName("android.os.SystemProperties");
var get = c.getMethod("get", String.class, String.class);
result = get.invoke(c, data, "Error");
return result;
}
Where data is a string of the system property I want.
I am using it to extract and match a serial number from a Samsung device that is a System Property call "ril.serialnumber" or "sys.serialnumber". Now I can use the above function to do what I was using the JAR file for. Just thought I'd share in case anyone else needed something similar.
It is because android.os.SystemProperties is not class you can import. Check the android documentation at https://developer.android.com/reference/android/os/package-summary.html
You could use
var build = require('android.os.Build');
console.log(build.SERIAL);
to access the serial number.

Android Schematic content provider library configuration?

Jake Wharton mentioned this library in a recent talk and it looks like a great way to avoid a load of boilerplate so I gave it a go. But without any success.
https://github.com/SimonVT/schematic
Below is the definition of the content provider with the annotation attached and the manifest provider element. The issue is that Android Studio does not like the provider definition because the content provider class does not extend ContentProvider.
Caused by: java.lang.ClassCastException: com.myapp.SchematicContentProvider
cannot be cast to android.content.ContentProvider
What am I missing? It could be related to android-apt which I am not using (Schematic recommends it but does not seem to require it) - when I try using android-apt I get a VerifyError so had to remove it from the build.
AndroidManifest.xml
<provider
android:name="com.myapp.SchematicContentProvider"
android:authorities="com.myapp.provider"
android:exported="false" />
And the class definition:
import net.simonvt.schematic.annotation.ContentProvider;
import net.simonvt.schematic.annotation.ContentUri;
import net.simonvt.schematic.annotation.TableEndpoint;
#ContentProvider(authority = SchematicContentProvider.AUTHORITY, database = SchematicDatabase.class)
public class SchematicContentProvider {
public static final String AUTHORITY = "com.myapp.provider";
interface Path {
String ROUTES = "routes";
}
#TableEndpoint(table = SchematicDatabase.ROUTES) public static class Routes {
#ContentUri(path = Path.ROUTES, type = "vnd.android.cursor.dir/list", defaultSort = SchematicRouteColumns.TITLE + " ASC")
public static final Uri ROUTES = Uri.parse("content://" + AUTHORITY + "/" + Path.ROUTES );
}
}
I've looked through the Schematic sample app (the code snippets in the readme are partial) but I can't see what I've missed. I'm not sure how to confirm that the code generation is working, how do I check? I looked under build but I only see BuildConfig under the Schematic package name.
It's a shame it's not working for me, it has great potential.
You aren't declaring the right ContentProvider.
You have to declare the generated one in the Manifest.
I should like this :
<provider
android:name=".yourOptionalPackage.generated.SchematicContentProvider"
android:authorities="com.myapp.provider"
android:exported="false" />
If your IDE (Android Studio/IntelliJ) shows red warning, just click on the Make Project button to generate the code.
If it's still not working, include apt-libs in your project (worth it), and to save even more time, use this awesome library also based on apt-libs ;)
Let me know in the comments if I solved your problem or not, and if you need help configuring your gradle file.
You receive this error because com.myapp.SchematicContentProvider is your class with annotations and isn't a generated ContentProvider (which will have the same name).
Louis Cognault provided a correct answer, but it worth to mention that Schematic has a special parameter packageName for #ContentProvider and #Database annotations. packageName defines where generated classes will be placed. It let's you to clarify creation of AndroidManifest.xml.
Provider definition class:
#ContentProvider(
authority = SchematicContentProvider.AUTHORITY,
database = SchematicDatabase.class,
packageName = "com.myapp.providerpackage")
public class SchematicContentProvider {
...
}
Database definition class:
#Database(
version = SchematicDatabase.VERSION,
packageName = "com.myapp.providerpackage"
)
public class SchematicDatabase{
public static final int VERSION = 1;
...
}
AndroidManifest.xml:
<provider
android:name="com.myapp.providerpackage.SchematicContentProvider"
android:authorities="com.myapp.provider"
android:exported="false" />

HMAC-Whirlpool implementation in Android

Has anyone implemented or using Hmac-Whirlpool on Android phone?
I found whirlpool.java on internet but default security provider in Android SDK seems not to have Whirlpool nor Hmac-Whirlpool.
Android has cut-down version of Bouncy Castle and seems not to allow access to org.bouncycastle.crypto.macs.HMac class, instead javax.crypto.Mac.getInstance(String algorithm) should be used (here). Again only some MAC algorithms seems to be allowed (I saw "HMAC-SHA512" is working). But if you decide to use SpongyCastle library, you can do this (here):
CipherParameters p = new KeyParameter(key.getBytes("UTF-8"));
WhirlpoolDigest w = new WhirlpoolDigest();
HMac hm = new HMac(w);
hm.init(p);
hm.update(inbytes, 0, inbytes.length);
byte[] result = new byte[hm.getMacSize()];
hm.doFinal(result, 0);
Including SpongyCastle may be problematic to many becuase it increased app size by 1.84MB in android 2.2. Then only relevant files could be imported into the project:
// interfaces
org.bouncycastle.crypto.CipherParameters
org.bouncycastle.crypto.Digest
org.bouncycastle.crypto.ExtendedDigest
org.bouncycastle.crypto.Mac
// classes
org.bouncycastle.crypto.params.KeyParameter
org.bouncycastle.crypto.digests.WhirlpoolDigest
org.bouncycastle.crypto.macs.HMac
org.bouncycastle.crypto.DataLengthException
org.bouncycastle.crypto.RuntimeCryptoException

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