Simulate finger touch with virtual fingerprint hal

Bug: 277780272
Test: atest BiometricsE2eTests
Change-Id: Ib5c044bec3490e073a778c47a12ccfccd928eb83

services/core/java/com/android/server/biometrics/sensors/fingerprint/FingerprintService.java

@@ -913,7 +913,6 @@ public class FingerprintService extends SystemService {
             }
             provider.onPointerDown(requestId, sensorId, pc);
         }
-
         @android.annotation.EnforcePermission(android.Manifest.permission.USE_BIOMETRIC_INTERNAL)
         @Override
 
@@ -1182,4 +1181,15 @@ public class FingerprintService extends SystemService {
             }
         }
     }
+
+    void simulateVhalFingerDown() {
+        if (Utils.isVirtualEnabled(getContext())) {
+            Slog.i(TAG, "Simulate virtual HAL finger down event");
+            final Pair<Integer, ServiceProvider> provider = mRegistry.getSingleProvider();
+            if (provider != null) {
+                provider.second.simulateVhalFingerDown(UserHandle.getCallingUserId(),
+                        provider.first);
+            }
+        }
+    }
 }

services/core/java/com/android/server/biometrics/sensors/fingerprint/FingerprintShellCommand.java

@@ -45,6 +45,8 @@ public class FingerprintShellCommand extends ShellCommand {
                     return doHelp();
                 case "sync":
                     return doSync();
+                case "fingerdown":
+                    return doSimulateVhalFingerDown();
                 default:
                     getOutPrintWriter().println("Unrecognized command: " + cmd);
             }
@@ -62,6 +64,8 @@ public class FingerprintShellCommand extends ShellCommand {
         pw.println("      Print this help text.");
         pw.println("  sync");
         pw.println("      Sync enrollments now (virtualized sensors only).");
+        pw.println("  fingerdown");
+        pw.println("      Simulate finger down event (virtualized sensors only).");
     }
 
     private int doHelp() {
@@ -73,4 +77,9 @@ public class FingerprintShellCommand extends ShellCommand {
         mService.syncEnrollmentsNow();
         return 0;
     }
+
+    private int doSimulateVhalFingerDown() {
+        mService.simulateVhalFingerDown();
+        return 0;
+    }
 }

services/core/java/com/android/server/biometrics/sensors/fingerprint/ServiceProvider.java

@@ -157,4 +157,11 @@ public interface ServiceProvider extends
      * @param sensorId sensor ID of the associated operation
      */
     default void scheduleWatchdog(int sensorId) {}
+
+    /**
+     * Simulate fingerprint down touch event for virtual HAL
+     * @param userId user ID
+     * @param sensorId sensor ID
+     */
+    default void simulateVhalFingerDown(int userId, int sensorId) {};
 }

services/core/java/com/android/server/biometrics/sensors/fingerprint/aidl/FingerprintProvider.java

@@ -856,4 +856,18 @@ public class FingerprintProvider implements IBinder.DeathRecipient, ServiceProvi
         }
         biometricScheduler.startWatchdog();
     }
+
+    @Override
+    public void simulateVhalFingerDown(int userId, int sensorId) {
+        Slog.d(getTag(), "Simulate virtual HAL finger down event");
+        final AidlSession session = mFingerprintSensors.get(sensorId).getSessionForUser(userId);
+        final PointerContext pc = new PointerContext();
+        try {
+            session.getSession().onPointerDownWithContext(pc);
+            session.getSession().onUiReady();
+            session.getSession().onPointerUpWithContext(pc);
+        } catch (RemoteException e) {
+            Slog.e(getTag(), "failed hal operation ", e);
+        }
+    }
 }