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/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server.credentials;
import android.annotation.NonNull;
import android.app.PendingIntent;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.credentials.CredentialManager;
import android.credentials.CredentialProviderInfo;
import android.credentials.ui.DisabledProviderData;
import android.credentials.ui.IntentFactory;
import android.credentials.ui.ProviderData;
import android.credentials.ui.RequestInfo;
import android.credentials.ui.UserSelectionDialogResult;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.ResultReceiver;
import android.os.UserHandle;
import android.service.credentials.CredentialProviderInfoFactory;
import android.util.Slog;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.UUID;
/** Initiates the Credential Manager UI and receives results. */
public class CredentialManagerUi {
private static final String TAG = "CredentialManagerUi";
@NonNull
private final CredentialManagerUiCallback mCallbacks;
@NonNull
private final Context mContext;
private final int mUserId;
private UiStatus mStatus;
private final Set<ComponentName> mEnabledProviders;
enum UiStatus {
IN_PROGRESS,
USER_INTERACTION,
NOT_STARTED, TERMINATED
}
@NonNull
private final ResultReceiver mResultReceiver = new ResultReceiver(
new Handler(Looper.getMainLooper())) {
@Override
protected void onReceiveResult(int resultCode, Bundle resultData) {
handleUiResult(resultCode, resultData);
}
};
private void handleUiResult(int resultCode, Bundle resultData) {
switch (resultCode) {
case UserSelectionDialogResult.RESULT_CODE_DIALOG_COMPLETE_WITH_SELECTION:
mStatus = UiStatus.IN_PROGRESS;
UserSelectionDialogResult selection = UserSelectionDialogResult
.fromResultData(resultData);
if (selection != null) {
mCallbacks.onUiSelection(selection);
} else {
Slog.i(TAG, "No selection found in UI result");
}
break;
case UserSelectionDialogResult.RESULT_CODE_DIALOG_USER_CANCELED:
mStatus = UiStatus.TERMINATED;
mCallbacks.onUiCancellation(/* isUserCancellation= */ true);
break;
case UserSelectionDialogResult.RESULT_CODE_CANCELED_AND_LAUNCHED_SETTINGS:
mStatus = UiStatus.TERMINATED;
mCallbacks.onUiCancellation(/* isUserCancellation= */ false);
break;
case UserSelectionDialogResult.RESULT_CODE_DATA_PARSING_FAILURE:
mStatus = UiStatus.TERMINATED;
mCallbacks.onUiSelectorInvocationFailure();
break;
default:
mStatus = UiStatus.IN_PROGRESS;
mCallbacks.onUiSelectorInvocationFailure();
break;
}
}
/** Creates intent that is ot be invoked to cancel an in-progress UI session. */
public Intent createCancelIntent(IBinder requestId, String packageName) {
return IntentFactory.createCancelUiIntent(requestId, /*shouldShowCancellationUi=*/ true,
packageName);
}
/**
* Interface to be implemented by any class that wishes to get callbacks from the UI.
*/
public interface CredentialManagerUiCallback {
/** Called when the user makes a selection. */
void onUiSelection(UserSelectionDialogResult selection);
/** Called when the UI is canceled without a successful provider result. */
void onUiCancellation(boolean isUserCancellation);
/** Called when the selector UI fails to come up (mostly due to parsing issue today). */
void onUiSelectorInvocationFailure();
}
public CredentialManagerUi(Context context, int userId,
CredentialManagerUiCallback callbacks, Set<ComponentName> enabledProviders) {
mContext = context;
mUserId = userId;
mCallbacks = callbacks;
mEnabledProviders = enabledProviders;
mStatus = UiStatus.IN_PROGRESS;
}
/** Set status for credential manager UI */
public void setStatus(UiStatus status) {
mStatus = status;
}
/** Returns status for credential manager UI */
public UiStatus getStatus() {
return mStatus;
}
/**
* Creates a {@link PendingIntent} to be used to invoke the credential manager selector UI,
* by the calling app process.
*
* @param requestInfo the information about the request
* @param providerDataList the list of provider data from remote providers
*/
public PendingIntent createPendingIntent(
RequestInfo requestInfo, ArrayList<ProviderData> providerDataList) {
List<CredentialProviderInfo> allProviders =
CredentialProviderInfoFactory.getCredentialProviderServices(
mContext,
mUserId,
CredentialManager.PROVIDER_FILTER_USER_PROVIDERS_ONLY,
mEnabledProviders,
// Don't need primary providers here.
new HashSet<String>());
List<DisabledProviderData> disabledProviderDataList = allProviders.stream()
.filter(provider -> !provider.isEnabled())
.map(disabledProvider -> new DisabledProviderData(
disabledProvider.getComponentName().flattenToString())).toList();
Intent intent = IntentFactory.createCredentialSelectorIntent(requestInfo, providerDataList,
new ArrayList<>(disabledProviderDataList), mResultReceiver)
.setAction(UUID.randomUUID().toString());
//TODO: Create unique pending intent using request code and cancel any pre-existing pending
// intents
return PendingIntent.getActivityAsUser(
mContext, /*requestCode=*/0, intent,
PendingIntent.FLAG_IMMUTABLE, /*options=*/null,
UserHandle.of(mUserId));
}
}
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