Merge "Bring up credMan bottom sheet from pinned entry" into main
diff --git a/core/java/android/credentials/CredentialManager.java b/core/java/android/credentials/CredentialManager.java
index ad3ccc4..3fcb3da 100644
--- a/core/java/android/credentials/CredentialManager.java
+++ b/core/java/android/credentials/CredentialManager.java
@@ -37,6 +37,7 @@
 import android.os.RemoteException;
 import android.provider.DeviceConfig;
 import android.util.Log;
+import android.view.autofill.IAutoFillManagerClient;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -135,7 +136,8 @@
             @Nullable CancellationSignal cancellationSignal,
             @CallbackExecutor @NonNull Executor executor,
             @NonNull OutcomeReceiver<GetCandidateCredentialsResponse,
-                    GetCandidateCredentialsException> callback
+                    GetCandidateCredentialsException> callback,
+            @NonNull IAutoFillManagerClient clientCallback
     ) {
         requireNonNull(request, "request must not be null");
         requireNonNull(callingPackage, "callingPackage must not be null");
@@ -153,6 +155,7 @@
                     mService.getCandidateCredentials(
                             request,
                             new GetCandidateCredentialsTransport(executor, callback),
+                            clientCallback,
                             callingPackage);
         } catch (RemoteException e) {
             e.rethrowFromSystemServer();
diff --git a/core/java/android/credentials/GetCandidateCredentialsResponse.java b/core/java/android/credentials/GetCandidateCredentialsResponse.java
index 1b130a9..530fead 100644
--- a/core/java/android/credentials/GetCandidateCredentialsResponse.java
+++ b/core/java/android/credentials/GetCandidateCredentialsResponse.java
@@ -18,6 +18,7 @@
 
 import android.annotation.Hide;
 import android.annotation.NonNull;
+import android.app.PendingIntent;
 import android.credentials.ui.GetCredentialProviderData;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -35,22 +36,39 @@
  */
 @Hide
 public final class GetCandidateCredentialsResponse implements Parcelable {
-    // TODO(b/299321990): Add members
-
     @NonNull
     private final List<GetCredentialProviderData> mCandidateProviderDataList;
 
+    private final PendingIntent mPendingIntent;
+
+    private final GetCredentialResponse mGetCredentialResponse;
+
     /**
      * @hide
      */
     @Hide
     public GetCandidateCredentialsResponse(
-            List<GetCredentialProviderData> candidateProviderDataList
+            GetCredentialResponse getCredentialResponse
+    ) {
+        mCandidateProviderDataList = null;
+        mPendingIntent = null;
+        mGetCredentialResponse = getCredentialResponse;
+    }
+
+    /**
+     * @hide
+     */
+    @Hide
+    public GetCandidateCredentialsResponse(
+            List<GetCredentialProviderData> candidateProviderDataList,
+            PendingIntent pendingIntent
     ) {
         Preconditions.checkCollectionNotEmpty(
                 candidateProviderDataList,
                 /*valueName=*/ "candidateProviderDataList");
         mCandidateProviderDataList = new ArrayList<>(candidateProviderDataList);
+        mPendingIntent = pendingIntent;
+        mGetCredentialResponse = null;
     }
 
     /**
@@ -62,17 +80,40 @@
         return mCandidateProviderDataList;
     }
 
+    /**
+     * Returns candidate provider data list.
+     *
+     * @hide
+     */
+    public GetCredentialResponse getGetCredentialResponse() {
+        return mGetCredentialResponse;
+    }
+
+    /**
+     * Returns candidate provider data list.
+     *
+     * @hide
+     */
+    public PendingIntent getPendingIntent() {
+        return mPendingIntent;
+    }
+
     protected GetCandidateCredentialsResponse(Parcel in) {
         List<GetCredentialProviderData> candidateProviderDataList = new ArrayList<>();
         in.readTypedList(candidateProviderDataList, GetCredentialProviderData.CREATOR);
         mCandidateProviderDataList = candidateProviderDataList;
 
         AnnotationValidations.validate(NonNull.class, null, mCandidateProviderDataList);
+
+        mPendingIntent = in.readTypedObject(PendingIntent.CREATOR);
+        mGetCredentialResponse = in.readTypedObject(GetCredentialResponse.CREATOR);
     }
 
     @Override
     public void writeToParcel(Parcel dest, int flags) {
         dest.writeTypedList(mCandidateProviderDataList);
+        dest.writeTypedObject(mPendingIntent, flags);
+        dest.writeTypedObject(mGetCredentialResponse, flags);
     }
 
     @Override
diff --git a/core/java/android/credentials/ICredentialManager.aidl b/core/java/android/credentials/ICredentialManager.aidl
index d081576..726bc97 100644
--- a/core/java/android/credentials/ICredentialManager.aidl
+++ b/core/java/android/credentials/ICredentialManager.aidl
@@ -22,6 +22,7 @@
 import android.credentials.ClearCredentialStateRequest;
 import android.credentials.CreateCredentialRequest;
 import android.credentials.GetCandidateCredentialsRequest;
+import android.view.autofill.IAutoFillManagerClient;
 import android.credentials.GetCredentialRequest;
 import android.credentials.RegisterCredentialDescriptionRequest;
 import android.credentials.UnregisterCredentialDescriptionRequest;
@@ -47,7 +48,7 @@
 
     @nullable ICancellationSignal executeCreateCredential(in CreateCredentialRequest request, in ICreateCredentialCallback callback, String callingPackage);
 
-    @nullable ICancellationSignal getCandidateCredentials(in GetCredentialRequest request, in IGetCandidateCredentialsCallback callback, String callingPackage);
+    @nullable ICancellationSignal getCandidateCredentials(in GetCredentialRequest request, in IGetCandidateCredentialsCallback callback, in IAutoFillManagerClient clientCallback, String callingPackage);
 
     @nullable ICancellationSignal clearCredentialState(in ClearCredentialStateRequest request, in IClearCredentialStateCallback callback, String callingPackage);
 
diff --git a/core/java/android/service/autofill/AutofillService.java b/core/java/android/service/autofill/AutofillService.java
index cb1b5d3..5ad2502 100644
--- a/core/java/android/service/autofill/AutofillService.java
+++ b/core/java/android/service/autofill/AutofillService.java
@@ -37,6 +37,7 @@
 import android.view.autofill.AutofillId;
 import android.view.autofill.AutofillManager;
 import android.view.autofill.AutofillValue;
+import android.view.autofill.IAutoFillManagerClient;
 
 import com.android.internal.os.IResultReceiver;
 
@@ -621,6 +622,23 @@
                     new FillCallback(callback, request.getId())));
         }
 
+
+        @Override
+        public void onFillCredentialRequest(FillRequest request, IFillCallback callback,
+                IAutoFillManagerClient autofillClientCallback) {
+            ICancellationSignal transport = CancellationSignal.createTransport();
+            try {
+                callback.onCancellable(transport);
+            } catch (RemoteException e) {
+                e.rethrowFromSystemServer();
+            }
+            mHandler.sendMessage(obtainMessage(
+                    AutofillService::onFillCredentialRequest,
+                    AutofillService.this, request, CancellationSignal.fromTransport(transport),
+                    new FillCallback(callback, request.getId()),
+                    autofillClientCallback));
+        }
+
         @Override
         public void onSaveRequest(SaveRequest request, ISaveCallback callback) {
             mHandler.sendMessage(obtainMessage(
@@ -683,6 +701,15 @@
             @NonNull CancellationSignal cancellationSignal, @NonNull FillCallback callback);
 
     /**
+     * Variant of onFillRequest for internal credential manager proxy autofill service only.
+     *
+     * @hide
+     */
+    public void onFillCredentialRequest(@NonNull FillRequest request,
+            @NonNull CancellationSignal cancellationSignal, @NonNull FillCallback callback,
+            IAutoFillManagerClient autofillClientCallback) {}
+
+    /**
      * Called when the user requests the service to save the contents of a screen.
      *
      * <p>If the service could not handle the request right away&mdash;for example, because it must
diff --git a/core/java/android/service/autofill/IAutoFillService.aidl b/core/java/android/service/autofill/IAutoFillService.aidl
index d88e094..03ead32 100644
--- a/core/java/android/service/autofill/IAutoFillService.aidl
+++ b/core/java/android/service/autofill/IAutoFillService.aidl
@@ -20,6 +20,7 @@
 import android.service.autofill.IFillCallback;
 import android.service.autofill.ISaveCallback;
 import android.service.autofill.SaveRequest;
+import android.view.autofill.IAutoFillManagerClient;
 import com.android.internal.os.IResultReceiver;
 
 /**
@@ -30,6 +31,8 @@
 oneway interface IAutoFillService {
     void onConnectedStateChanged(boolean connected);
     void onFillRequest(in FillRequest request, in IFillCallback callback);
+    void onFillCredentialRequest(in FillRequest request, in IFillCallback callback,
+    in IAutoFillManagerClient client);
     void onSaveRequest(in SaveRequest request, in ISaveCallback callback);
     void onSavedPasswordCountRequest(in IResultReceiver receiver);
 }
diff --git a/packages/CredentialManager/src/com/android/credentialmanager/autofill/CredentialAutofillService.kt b/packages/CredentialManager/src/com/android/credentialmanager/autofill/CredentialAutofillService.kt
index 0ff1c7f..dfa5735 100644
--- a/packages/CredentialManager/src/com/android/credentialmanager/autofill/CredentialAutofillService.kt
+++ b/packages/CredentialManager/src/com/android/credentialmanager/autofill/CredentialAutofillService.kt
@@ -19,16 +19,18 @@
 import android.R
 import android.app.assist.AssistStructure
 import android.content.Context
-import android.credentials.CredentialManager
-import android.credentials.CredentialOption
-import android.credentials.GetCandidateCredentialsException
-import android.credentials.GetCandidateCredentialsResponse
+import android.app.PendingIntent
+import android.credentials.GetCredentialResponse
 import android.credentials.GetCredentialRequest
-import android.credentials.ui.GetCredentialProviderData
+import android.credentials.GetCandidateCredentialsResponse
+import android.credentials.GetCandidateCredentialsException
+import android.credentials.CredentialOption
 import android.graphics.drawable.Icon
+import android.credentials.ui.GetCredentialProviderData
 import android.os.Bundle
 import android.os.CancellationSignal
 import android.os.OutcomeReceiver
+import android.credentials.Credential
 import android.service.autofill.AutofillService
 import android.service.autofill.Dataset
 import android.service.autofill.Field
@@ -41,8 +43,11 @@
 import android.service.autofill.SaveRequest
 import android.service.credentials.CredentialProviderService
 import android.util.Log
+import android.view.autofill.AutofillValue
+import android.view.autofill.IAutoFillManagerClient
 import android.view.autofill.AutofillId
 import android.widget.inline.InlinePresentationSpec
+import android.credentials.CredentialManager
 import androidx.autofill.inline.v1.InlineSuggestionUi
 import androidx.credentials.provider.CustomCredentialEntry
 import androidx.credentials.provider.PasswordCredentialEntry
@@ -58,11 +63,13 @@
 import org.json.JSONObject
 import java.util.concurrent.Executors
 
+
 class CredentialAutofillService : AutofillService() {
 
     companion object {
         private const val TAG = "CredAutofill"
 
+        private const val SESSION_ID_KEY = "session_id"
         private const val CRED_HINT_PREFIX = "credential="
         private const val REQUEST_DATA_KEY = "requestData"
         private const val CANDIDATE_DATA_KEY = "candidateQueryData"
@@ -77,10 +84,27 @@
             cancellationSignal: CancellationSignal,
             callback: FillCallback
     ) {
+    }
+
+    override fun onFillCredentialRequest(
+            request: FillRequest,
+            cancellationSignal: CancellationSignal,
+            callback: FillCallback,
+            autofillCallback: IAutoFillManagerClient
+    ) {
         val context = request.fillContexts
         val structure = context[context.size - 1].structure
         val callingPackage = structure.activityComponent.packageName
-        Log.i(TAG, "onFillRequest called for $callingPackage")
+        Log.i(TAG, "onFillCredentialRequest called for $callingPackage")
+
+        var sessionId = request.clientState?.getInt(SESSION_ID_KEY)
+
+        Log.i(TAG, "Autofill sessionId: " + sessionId)
+        if (sessionId == null) {
+            Log.i(TAG, "Session Id not found")
+            callback.onFailure("Session Id not found")
+            return
+        }
 
         val getCredRequest: GetCredentialRequest? = getCredManRequest(structure)
         if (getCredRequest == null) {
@@ -95,7 +119,31 @@
                 GetCandidateCredentialsException> {
             override fun onResult(result: GetCandidateCredentialsResponse) {
                 Log.i(TAG, "getCandidateCredentials onResponse")
-                val fillResponse = convertToFillResponse(result, request)
+
+                if (result.getCredentialResponse != null) {
+                    val autofillId: AutofillId? = result.getCredentialResponse
+                            .credential.data.getParcelable(
+                                    CredentialProviderService.EXTRA_AUTOFILL_ID,
+                                    AutofillId::class.java)
+                    Log.i(TAG, "getCandidateCredentials final response, autofillId: " +
+                            autofillId)
+
+                    if (autofillId != null) {
+                        autofillCallback.autofill(
+                                sessionId,
+                                mutableListOf(autofillId),
+                                mutableListOf(
+                                        AutofillValue.forText(
+                                                convertResponseToJson(result.getCredentialResponse)
+                                        )
+                                ),
+                                false)
+                    }
+                    return
+                }
+
+                val fillResponse = convertToFillResponse(result, request,
+                        this@CredentialAutofillService)
                 if (fillResponse != null) {
                     callback.onSuccess(fillResponse)
                 } else {
@@ -115,10 +163,62 @@
                 callingPackage,
                 CancellationSignal(),
                 Executors.newSingleThreadExecutor(),
-                outcome
+                outcome,
+                autofillCallback
         )
     }
 
+    // TODO(b/318118018): Use from Jetpack
+    private fun convertResponseToJson(response: GetCredentialResponse): String? {
+        try {
+            val jsonObject = JSONObject()
+            jsonObject.put("type", "get")
+            val jsonCred = JSONObject()
+            jsonCred.put("type", response.credential.type)
+            jsonCred.put("data", credentialToJSON(
+                    response.credential))
+            jsonObject.put("credential", jsonCred)
+            return jsonObject.toString()
+        } catch (e: JSONException) {
+            Log.i(
+                    TAG, "Exception while constructing response JSON: " +
+                    e.message
+            )
+        }
+        return null
+    }
+
+    // TODO(b/318118018): Replace with calls to Jetpack
+    private fun credentialToJSON(credential: Credential): JSONObject? {
+        Log.i(TAG, "credentialToJSON")
+        try {
+            if (credential.type == "android.credentials.TYPE_PASSWORD_CREDENTIAL") {
+                Log.i(TAG, "toJSON PasswordCredential")
+
+                val json = JSONObject()
+                val id = credential.data.getString("androidx.credentials.BUNDLE_KEY_ID")
+                val pass = credential.data.getString("androidx.credentials.BUNDLE_KEY_PASSWORD")
+                json.put("androidx.credentials.BUNDLE_KEY_ID", id)
+                json.put("androidx.credentials.BUNDLE_KEY_PASSWORD", pass)
+                return json
+            } else if (credential.type == "androidx.credentials.TYPE_PUBLIC_KEY_CREDENTIAL") {
+                Log.i(TAG, "toJSON PublicKeyCredential")
+
+                val json = JSONObject()
+                val responseJson = credential
+                        .data
+                        .getString("androidx.credentials.BUNDLE_KEY_AUTHENTICATION_RESPONSE_JSON")
+                json.put("androidx.credentials.BUNDLE_KEY_AUTHENTICATION_RESPONSE_JSON",
+                        responseJson)
+                return json
+            }
+        } catch (e: JSONException) {
+            Log.i(TAG, "issue while converting credential response to JSON")
+        }
+        Log.i(TAG, "Unsupported credential type")
+        return null
+    }
+
     private fun getEntryToIconMap(
             candidateProviderDataList: MutableList<GetCredentialProviderData>
     ): Map<String, Icon> {
@@ -150,14 +250,16 @@
 
     private fun convertToFillResponse(
             getCredResponse: GetCandidateCredentialsResponse,
-            filLRequest: FillRequest
+            filLRequest: FillRequest,
+            context: Context
     ): FillResponse? {
         val providerList = GetFlowUtils.toProviderList(
                 getCredResponse.candidateProviderDataList,
-                this@CredentialAutofillService)
+                context)
         if (providerList.isEmpty()) {
             return null
         }
+
         val entryIconMap: Map<String, Icon> =
                 getEntryToIconMap(getCredResponse.candidateProviderDataList)
         val autofillIdToProvidersMap: Map<AutofillId, List<ProviderInfo>> =
@@ -166,7 +268,8 @@
         var validFillResponse = false
         autofillIdToProvidersMap.forEach { (autofillId, providers) ->
             validFillResponse = processProvidersForAutofillId(
-                    filLRequest, autofillId, providers, entryIconMap, fillResponseBuilder)
+                    filLRequest, autofillId, providers, entryIconMap, fillResponseBuilder,
+                    getCredResponse.pendingIntent)
                     .or(validFillResponse)
         }
         if (!validFillResponse) {
@@ -180,7 +283,8 @@
             autofillId: AutofillId,
             providerList: List<ProviderInfo>,
             entryIconMap: Map<String, Icon>,
-            fillResponseBuilder: FillResponse.Builder
+            fillResponseBuilder: FillResponse.Builder,
+            bottomSheetPendingIntent: PendingIntent?
     ): Boolean {
         if (providerList.isEmpty()) {
             return false
@@ -227,9 +331,9 @@
                         ?: getDefaultIcon()
             }
             // Create inline presentation
-            var inlinePresentation: InlinePresentation? = null;
+            var inlinePresentation: InlinePresentation? = null
+            var spec: InlinePresentationSpec?
             if (inlinePresentationSpecs != null) {
-                val spec: InlinePresentationSpec
                 if (i < inlinePresentationSpecsCount) {
                     spec = inlinePresentationSpecs[i]
                 } else {
@@ -265,9 +369,52 @@
                             .build())
             datasetAdded = true
         }
+        val pinnedSpec = getLastInlinePresentationSpec(inlinePresentationSpecs,
+                inlinePresentationSpecsCount)
+        if (datasetAdded && bottomSheetPendingIntent != null && pinnedSpec != null) {
+            addPinnedInlineSuggestion(bottomSheetPendingIntent, pinnedSpec, autofillId,
+                    fillResponseBuilder)
+        }
         return datasetAdded
     }
 
+    private fun getLastInlinePresentationSpec(
+            inlinePresentationSpecs: List<InlinePresentationSpec>?,
+            inlinePresentationSpecsCount: Int
+    ): InlinePresentationSpec? {
+        if (inlinePresentationSpecs != null) {
+            return inlinePresentationSpecs[inlinePresentationSpecsCount - 1]
+        }
+        return null
+    }
+
+    private fun addPinnedInlineSuggestion(
+            bottomSheetPendingIntent: PendingIntent,
+            spec: InlinePresentationSpec,
+            autofillId: AutofillId,
+            fillResponseBuilder: FillResponse.Builder
+    ) {
+        val dataSetBuilder = Dataset.Builder()
+        val sliceBuilder = InlineSuggestionUi
+                .newContentBuilder(bottomSheetPendingIntent)
+                .setStartIcon(Icon.createWithResource(this,
+                        com.android.credentialmanager.R.drawable.ic_other_sign_in_24))
+        val presentationBuilder = Presentations.Builder()
+                .setInlinePresentation(InlinePresentation(
+                        sliceBuilder.build().slice, spec, /* pinned= */ true))
+
+        fillResponseBuilder.addDataset(
+                dataSetBuilder
+                        .setField(
+                                autofillId,
+                                Field.Builder().setPresentations(
+                                        presentationBuilder.build())
+                                        .build())
+                        .setAuthentication(bottomSheetPendingIntent.intentSender)
+                        .build()
+        )
+    }
+
     /**
      *  Maps Autofill Id to provider list. For example, passing in a provider info
      *
diff --git a/services/autofill/java/com/android/server/autofill/RemoteFillService.java b/services/autofill/java/com/android/server/autofill/RemoteFillService.java
index 4688658..6d0915b 100644
--- a/services/autofill/java/com/android/server/autofill/RemoteFillService.java
+++ b/services/autofill/java/com/android/server/autofill/RemoteFillService.java
@@ -38,6 +38,7 @@
 import android.service.autofill.SaveRequest;
 import android.text.format.DateUtils;
 import android.util.Slog;
+import android.view.autofill.IAutoFillManagerClient;
 
 import com.android.internal.infra.AbstractRemoteService;
 import com.android.internal.infra.ServiceConnector;
@@ -56,12 +57,22 @@
     private static final long TIMEOUT_IDLE_BIND_MILLIS = 5 * DateUtils.SECOND_IN_MILLIS;
     private static final long TIMEOUT_REMOTE_REQUEST_MILLIS = 5 * DateUtils.SECOND_IN_MILLIS;
 
+    private static final ComponentName CREDMAN_SERVICE_COMPONENT_NAME =
+            new ComponentName("com.android.credentialmanager",
+                    "com.android.credentialmanager.autofill.CredentialAutofillService");
+
     private final FillServiceCallbacks mCallbacks;
     private final Object mLock = new Object();
     private CompletableFuture<FillResponse> mPendingFillRequest;
     private int mPendingFillRequestId = INVALID_REQUEST_ID;
     private final ComponentName mComponentName;
 
+    private final boolean mIsCredentialAutofillService;
+
+    public boolean isCredentialAutofillService() {
+        return mIsCredentialAutofillService;
+    }
+
     public interface FillServiceCallbacks
             extends AbstractRemoteService.VultureCallback<RemoteFillService> {
         void onFillRequestSuccess(int requestId, @Nullable FillResponse response,
@@ -83,6 +94,7 @@
                 userId, IAutoFillService.Stub::asInterface);
         mCallbacks = callbacks;
         mComponentName = componentName;
+        mIsCredentialAutofillService = mComponentName.equals(CREDMAN_SERVICE_COMPONENT_NAME);
     }
 
     @Override // from ServiceConnector.Impl
@@ -117,6 +129,10 @@
         super.addLast(iAutoFillServiceJob);
     }
 
+    public ComponentName getComponentName() {
+        return mComponentName;
+    }
+
     /**
      * Cancel the currently pending request.
      *
@@ -134,6 +150,78 @@
         }
     }
 
+    public void onFillCredentialRequest(@NonNull FillRequest request,
+            IAutoFillManagerClient autofillCallback) {
+        if (sVerbose) {
+            Slog.v(TAG, "onFillRequest:" + request);
+        }
+        AtomicReference<ICancellationSignal> cancellationSink = new AtomicReference<>();
+        AtomicReference<CompletableFuture<FillResponse>> futureRef = new AtomicReference<>();
+
+        CompletableFuture<FillResponse> connectThenFillRequest = postAsync(remoteService -> {
+            if (sVerbose) {
+                Slog.v(TAG, "calling onFillRequest() for id=" + request.getId());
+            }
+
+            CompletableFuture<FillResponse> fillRequest = new CompletableFuture<>();
+            remoteService.onFillCredentialRequest(request, new IFillCallback.Stub() {
+                @Override
+                public void onCancellable(ICancellationSignal cancellation) {
+                    CompletableFuture<FillResponse> future = futureRef.get();
+                    if (future != null && future.isCancelled()) {
+                        dispatchCancellationSignal(cancellation);
+                    } else {
+                        cancellationSink.set(cancellation);
+                    }
+                }
+
+                @Override
+                public void onSuccess(FillResponse response) {
+                    fillRequest.complete(response);
+                }
+
+                @Override
+                public void onFailure(int requestId, CharSequence message) {
+                    String errorMessage = message == null ? "" : String.valueOf(message);
+                    fillRequest.completeExceptionally(
+                            new RuntimeException(errorMessage));
+                }
+            }, autofillCallback);
+            return fillRequest;
+        }).orTimeout(TIMEOUT_REMOTE_REQUEST_MILLIS, TimeUnit.MILLISECONDS);
+        futureRef.set(connectThenFillRequest);
+
+        synchronized (mLock) {
+            mPendingFillRequest = connectThenFillRequest;
+            mPendingFillRequestId = request.getId();
+        }
+
+        connectThenFillRequest.whenComplete((res, err) -> Handler.getMain().post(() -> {
+            synchronized (mLock) {
+                mPendingFillRequest = null;
+                mPendingFillRequestId = INVALID_REQUEST_ID;
+            }
+            if (mCallbacks == null) {
+                Slog.w(TAG, "Error calling RemoteFillService - service already unbound");
+                return;
+            }
+            if (err == null) {
+                mCallbacks.onFillRequestSuccess(request.getId(), res,
+                        mComponentName.getPackageName(), request.getFlags());
+            } else {
+                Slog.e(TAG, "Error calling on fill request", err);
+                if (err instanceof TimeoutException) {
+                    dispatchCancellationSignal(cancellationSink.get());
+                    mCallbacks.onFillRequestTimeout(request.getId());
+                } else if (err instanceof CancellationException) {
+                    dispatchCancellationSignal(cancellationSink.get());
+                } else {
+                    mCallbacks.onFillRequestFailure(request.getId(), err.getMessage());
+                }
+            }
+        }));
+    }
+
     public void onFillRequest(@NonNull FillRequest request) {
         if (sVerbose) {
             Slog.v(TAG, "onFillRequest:" + request);
diff --git a/services/autofill/java/com/android/server/autofill/SecondaryProviderHandler.java b/services/autofill/java/com/android/server/autofill/SecondaryProviderHandler.java
index 4a6d5c9b..553ba12 100644
--- a/services/autofill/java/com/android/server/autofill/SecondaryProviderHandler.java
+++ b/services/autofill/java/com/android/server/autofill/SecondaryProviderHandler.java
@@ -16,14 +16,19 @@
 
 package com.android.server.autofill;
 
+import static com.android.server.autofill.Session.SESSION_ID_KEY;
+
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.IntentSender;
+import android.os.Bundle;
 import android.service.autofill.FillRequest;
 import android.service.autofill.FillResponse;
 import android.util.Slog;
+import android.view.autofill.IAutoFillManagerClient;
+import android.view.inputmethod.InlineSuggestionsRequest;
 
 /**
  * Requests autofill response from a Remote Autofill Service. This autofill service can be
@@ -95,10 +100,33 @@
     /**
      * Requests a new fill response.
      */
-    public void onFillRequest(FillRequest pendingFillRequest, int flag) {
+    public void onFillRequest(FillRequest pendingFillRequest,
+            InlineSuggestionsRequest pendingInlineSuggestionsRequest, int flag, int id,
+            IAutoFillManagerClient client) {
         Slog.v(TAG, "Requesting fill response to secondary provider.");
         mLastFlag = flag;
-        mRemoteFillService.onFillRequest(pendingFillRequest);
+        if (mRemoteFillService != null && mRemoteFillService.isCredentialAutofillService()) {
+            Slog.v(TAG, "About to call CredAutofill service as secondary provider");
+            addSessionIdToClientState(pendingFillRequest, pendingInlineSuggestionsRequest, id);
+            mRemoteFillService.onFillCredentialRequest(pendingFillRequest, client);
+        } else {
+            mRemoteFillService.onFillRequest(pendingFillRequest);
+        }
+    }
+
+    private FillRequest addSessionIdToClientState(FillRequest pendingFillRequest,
+            InlineSuggestionsRequest pendingInlineSuggestionsRequest, int id) {
+        if (pendingFillRequest.getClientState() == null) {
+            pendingFillRequest = new FillRequest(pendingFillRequest.getId(),
+                    pendingFillRequest.getFillContexts(),
+                    pendingFillRequest.getHints(),
+                    new Bundle(),
+                    pendingFillRequest.getFlags(),
+                    pendingInlineSuggestionsRequest,
+                    pendingFillRequest.getDelayedFillIntentSender());
+        }
+        pendingFillRequest.getClientState().putInt(SESSION_ID_KEY, id);
+        return pendingFillRequest;
     }
 
     public void destroy() {
diff --git a/services/autofill/java/com/android/server/autofill/Session.java b/services/autofill/java/com/android/server/autofill/Session.java
index d71258a..a49f9db 100644
--- a/services/autofill/java/com/android/server/autofill/Session.java
+++ b/services/autofill/java/com/android/server/autofill/Session.java
@@ -234,6 +234,8 @@
             new ComponentName("com.android.credentialmanager",
                     "com.android.credentialmanager.autofill.CredentialAutofillService");
 
+    static final String SESSION_ID_KEY = "session_id";
+
     final Object mLock;
 
     private final AutofillManagerServiceImpl mService;
@@ -383,7 +385,7 @@
      */
     private boolean mHasCallback;
 
-    /** Whether the session has credential provider as the primary provider. */
+    /** Whether the session has credential manager provider as the primary provider. */
     private boolean mIsPrimaryCredential;
 
     @GuardedBy("mLock")
@@ -723,9 +725,16 @@
                     && mSecondaryProviderHandler != null) {
                 Slog.v(TAG, "Requesting fill response to secondary provider.");
                 mSecondaryProviderHandler.onFillRequest(mPendingFillRequest,
-                        mPendingFillRequest.getFlags());
+                        mPendingInlineSuggestionsRequest,
+                        mPendingFillRequest.getFlags(), id, mClient);
             } else if (mRemoteFillService != null) {
-                mRemoteFillService.onFillRequest(mPendingFillRequest);
+                if (mIsPrimaryCredential) {
+                    mPendingFillRequest = addSessionIdToClientState(mPendingFillRequest,
+                            mPendingInlineSuggestionsRequest, id);
+                    mRemoteFillService.onFillCredentialRequest(mPendingFillRequest, mClient);
+                } else {
+                    mRemoteFillService.onFillRequest(mPendingFillRequest);
+                }
             }
             mPendingInlineSuggestionsRequest = null;
             mWaitForInlineRequest = false;
@@ -868,6 +877,21 @@
         }
     }
 
+    private FillRequest addSessionIdToClientState(FillRequest pendingFillRequest,
+            InlineSuggestionsRequest pendingInlineSuggestionsRequest, int id) {
+        if (pendingFillRequest.getClientState() == null) {
+            pendingFillRequest = new FillRequest(pendingFillRequest.getId(),
+                    pendingFillRequest.getFillContexts(),
+                    pendingFillRequest.getHints(),
+                    new Bundle(),
+                    pendingFillRequest.getFlags(),
+                    pendingInlineSuggestionsRequest,
+                    pendingFillRequest.getDelayedFillIntentSender());
+        }
+        pendingFillRequest.getClientState().putInt(SESSION_ID_KEY, id);
+        return pendingFillRequest;
+    }
+
     /**
      * Get the list of valid autofill hint types from Device flags
      * Returns empty list if PCC is off or no types available
diff --git a/services/credentials/java/com/android/server/credentials/CredentialManagerService.java b/services/credentials/java/com/android/server/credentials/CredentialManagerService.java
index 686b2a8..dfb5a57 100644
--- a/services/credentials/java/com/android/server/credentials/CredentialManagerService.java
+++ b/services/credentials/java/com/android/server/credentials/CredentialManagerService.java
@@ -63,6 +63,7 @@
 import android.util.Pair;
 import android.util.Slog;
 import android.util.SparseArray;
+import android.view.autofill.IAutoFillManagerClient;
 
 import com.android.internal.annotations.GuardedBy;
 import com.android.server.credentials.metrics.ApiName;
@@ -483,6 +484,7 @@
         public ICancellationSignal getCandidateCredentials(
                 GetCredentialRequest request,
                 IGetCandidateCredentialsCallback callback,
+                IAutoFillManagerClient clientCallback,
                 final String callingPackage) {
             Slog.i(TAG, "starting getCandidateCredentials with callingPackage: "
                     + callingPackage);
@@ -503,7 +505,8 @@
                             request,
                             constructCallingAppInfo(callingPackage, userId, request.getOrigin()),
                             getEnabledProvidersForUser(userId),
-                            CancellationSignal.fromTransport(cancelTransport)
+                            CancellationSignal.fromTransport(cancelTransport),
+                            clientCallback
                     );
             addSessionLocked(userId, session);
 
diff --git a/services/credentials/java/com/android/server/credentials/GetCandidateRequestSession.java b/services/credentials/java/com/android/server/credentials/GetCandidateRequestSession.java
index 6d9b7e8..ca5600e 100644
--- a/services/credentials/java/com/android/server/credentials/GetCandidateRequestSession.java
+++ b/services/credentials/java/com/android/server/credentials/GetCandidateRequestSession.java
@@ -16,6 +16,7 @@
 
 package com.android.server.credentials;
 
+import android.Manifest;
 import android.annotation.Nullable;
 import android.content.ComponentName;
 import android.content.Context;
@@ -23,6 +24,7 @@
 import android.credentials.GetCandidateCredentialsException;
 import android.credentials.GetCandidateCredentialsResponse;
 import android.credentials.GetCredentialRequest;
+import android.credentials.GetCredentialResponse;
 import android.credentials.IGetCandidateCredentialsCallback;
 import android.credentials.ui.GetCredentialProviderData;
 import android.credentials.ui.ProviderData;
@@ -30,7 +32,9 @@
 import android.os.CancellationSignal;
 import android.os.RemoteException;
 import android.service.credentials.CallingAppInfo;
+import android.service.credentials.PermissionUtils;
 import android.util.Slog;
+import android.view.autofill.IAutoFillManagerClient;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -42,18 +46,22 @@
  */
 public class GetCandidateRequestSession extends RequestSession<GetCredentialRequest,
         IGetCandidateCredentialsCallback, GetCandidateCredentialsResponse>
-        implements ProviderSession.ProviderInternalCallback<GetCandidateCredentialsResponse> {
+        implements ProviderSession.ProviderInternalCallback<GetCredentialResponse> {
     private static final String TAG = "GetCandidateRequestSession";
 
+    private final IAutoFillManagerClient mAutoFillCallback;
+
     public GetCandidateRequestSession(
             Context context, SessionLifetime sessionCallback,
             Object lock, int userId, int callingUid,
             IGetCandidateCredentialsCallback callback, GetCredentialRequest request,
             CallingAppInfo callingAppInfo, Set<ComponentName> enabledProviders,
-            CancellationSignal cancellationSignal) {
+            CancellationSignal cancellationSignal,
+            IAutoFillManagerClient autoFillCallback) {
         super(context, sessionCallback, lock, userId, callingUid, request, callback,
                 RequestInfo.TYPE_GET, callingAppInfo, enabledProviders,
                 cancellationSignal, 0L);
+        mAutoFillCallback = autoFillCallback;
     }
 
     /**
@@ -92,12 +100,25 @@
             return;
         }
 
+        cancelExistingPendingIntent();
+        mPendingIntent = mCredentialManagerUi.createPendingIntent(
+                RequestInfo.newGetRequestInfo(
+                        mRequestId, mClientRequest, mClientAppInfo.getPackageName(),
+                        PermissionUtils.hasPermission(mContext, mClientAppInfo.getPackageName(),
+                                Manifest.permission.CREDENTIAL_MANAGER_SET_ALLOWED_PROVIDERS)),
+                providerDataList);
+
         List<GetCredentialProviderData> candidateProviderDataList = new ArrayList<>();
         for (ProviderData providerData : providerDataList) {
             candidateProviderDataList.add((GetCredentialProviderData) (providerData));
         }
-        respondToClientWithResponseAndFinish(new GetCandidateCredentialsResponse(
-                candidateProviderDataList));
+
+        try {
+            invokeClientCallbackSuccess(new GetCandidateCredentialsResponse(
+                    candidateProviderDataList, mPendingIntent));
+        } catch (RemoteException e) {
+            Slog.e(TAG, "Issue while responding to client with error : " + e);
+        }
     }
 
     @Override
@@ -151,7 +172,8 @@
 
     @Override
     public void onFinalResponseReceived(ComponentName componentName,
-            GetCandidateCredentialsResponse response) {
-        // Not applicable for session without UI
+            GetCredentialResponse response) {
+        Slog.d(TAG, "onFinalResponseReceived");
+        respondToClientWithResponseAndFinish(new GetCandidateCredentialsResponse(response));
     }
 }