Implement new NFC-EE API's as shared library (frameworks/base).
Change-Id: I45c4eaf59ec78167fc236fdd59676465a5e1bcb7
diff --git a/nfc-extras/Android.mk b/nfc-extras/Android.mk
new file mode 100644
index 0000000..330e2d4
--- /dev/null
+++ b/nfc-extras/Android.mk
@@ -0,0 +1,11 @@
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_SRC_FILES := $(call all-subdir-java-files)
+
+LOCAL_MODULE:= com.android.nfc_extras
+
+include $(BUILD_JAVA_LIBRARY)
diff --git a/nfc-extras/com.android.nfc_extras.xml b/nfc-extras/com.android.nfc_extras.xml
new file mode 100644
index 0000000..370145d
--- /dev/null
+++ b/nfc-extras/com.android.nfc_extras.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2011 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.
+-->
+
+<permissions>
+ <library name="com.android.nfc_extras"
+ file="/system/framework/com.android.nfc_extras.jar" />
+</permissions>
diff --git a/nfc-extras/java/com/android/nfc_extras/NfcAdapterExtras.java b/nfc-extras/java/com/android/nfc_extras/NfcAdapterExtras.java
new file mode 100644
index 0000000..cf38bd1
--- /dev/null
+++ b/nfc-extras/java/com/android/nfc_extras/NfcAdapterExtras.java
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2011 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.nfc_extras;
+
+import android.annotation.SdkConstant;
+import android.annotation.SdkConstant.SdkConstantType;
+import android.nfc.INfcAdapterExtras;
+import android.nfc.NfcAdapter;
+import android.os.RemoteException;
+import android.util.Log;
+
+/**
+ * Provides additional methods on an {@link NfcAdapter} for Card Emulation
+ * and management of {@link NfcExecutionEnvironment}'s.
+ *
+ * There is a 1-1 relationship between an {@link NfcAdapterExtras} object and
+ * a {@link NfcAdapter} object.
+ */
+public final class NfcAdapterExtras {
+ private static final String TAG = "NfcAdapterExtras";
+
+ /**
+ * Broadcast Action: an RF field ON has been detected.
+ *
+ * <p class="note">This is an unreliable signal, and will be removed.
+ * <p class="note">
+ * Requires the {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} permission
+ * to receive.
+ */
+ public static final String ACTION_RF_FIELD_ON_DETECTED =
+ "com.android.nfc_extras.action.RF_FIELD_ON_DETECTED";
+
+ /**
+ * Broadcast Action: an RF field OFF has been detected.
+ *
+ * <p class="note">This is an unreliable signal, and will be removed.
+ * <p class="note">
+ * Requires the {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} permission
+ * to receive.
+ */
+ public static final String ACTION_RF_FIELD_OFF_DETECTED =
+ "com.android.nfc_extras.action.RF_FIELD_OFF_DETECTED";
+
+ // protected by NfcAdapterExtras.class, and final after first construction
+ private static INfcAdapterExtras sService;
+ private static boolean sIsInitialized = false;
+ private static NfcAdapterExtras sSingleton;
+ private static NfcExecutionEnvironment sEmbeddedEe;
+ private static CardEmulationRoute sRouteOff;
+ private static CardEmulationRoute sRouteOnWhenScreenOn;
+
+ /**
+ * Get the {@link NfcAdapterExtras} for the given {@link NfcAdapter}.
+ *
+ * <p class="note">
+ * Requires the {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} permission.
+ *
+ * @param adapter a {@link NfcAdapter}, must not be null
+ * @return the {@link NfcAdapterExtras} object for the given {@link NfcAdapter}
+ */
+ public static NfcAdapterExtras get(NfcAdapter adapter) {
+ synchronized(NfcAdapterExtras.class) {
+ if (!sIsInitialized) {
+ sIsInitialized = true;
+ sService = adapter.getNfcAdapterExtrasInterface();
+ sEmbeddedEe = new NfcExecutionEnvironment(sService);
+ sRouteOff = new CardEmulationRoute(CardEmulationRoute.ROUTE_OFF, null);
+ sRouteOnWhenScreenOn = new CardEmulationRoute(
+ CardEmulationRoute.ROUTE_ON_WHEN_SCREEN_ON, sEmbeddedEe);
+ sSingleton = new NfcAdapterExtras();
+ }
+ return sSingleton;
+ }
+ }
+
+ private NfcAdapterExtras() {}
+
+ /**
+ * Immutable data class that describes a card emulation route.
+ */
+ public final static class CardEmulationRoute {
+ /**
+ * Card Emulation is turned off on this NfcAdapter.
+ * <p>This is the default routing state after boot.
+ */
+ public static final int ROUTE_OFF = 1;
+
+ /**
+ * Card Emulation is routed to {@link #nfcEe} only when the screen is on,
+ * otherwise it is turned off.
+ */
+ public static final int ROUTE_ON_WHEN_SCREEN_ON = 2;
+
+ /**
+ * A route such as {@link #ROUTE_OFF} or {@link #ROUTE_ON_WHEN_SCREEN_ON}.
+ */
+ public final int route;
+
+ /**
+ * The {@link NFcExecutionEnvironment} that is Card Emulation is routed to.
+ * <p>null if {@link #route} is {@link #ROUTE_OFF}, otherwise not null.
+ */
+ public final NfcExecutionEnvironment nfcEe;
+
+ public CardEmulationRoute(int route, NfcExecutionEnvironment nfcEe) {
+ if (route == ROUTE_OFF && nfcEe != null) {
+ throw new IllegalArgumentException("must not specifiy a NFC-EE with ROUTE_OFF");
+ } else if (route != ROUTE_OFF && nfcEe == null) {
+ throw new IllegalArgumentException("must specifiy a NFC-EE for this route");
+ }
+ this.route = route;
+ this.nfcEe = nfcEe;
+ }
+ }
+
+ /**
+ * Get the routing state of this NFC EE.
+ *
+ * <p class="note">
+ * Requires the {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} permission.
+ *
+ * @return
+ */
+ public CardEmulationRoute getCardEmulationRoute() {
+ try {
+ int route = sService.getCardEmulationRoute();
+ return route == CardEmulationRoute.ROUTE_OFF ?
+ sRouteOff :
+ sRouteOnWhenScreenOn;
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ return sRouteOff;
+ }
+ }
+
+ /**
+ * Set the routing state of this NFC EE.
+ *
+ * <p>This routing state is not persisted across reboot.
+ *
+ * <p class="note">
+ * Requires the {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} permission.
+ *
+ * @param route a {@link #CardEmulationRoute}
+ */
+ public void setCardEmulationRoute(CardEmulationRoute route) {
+ try {
+ sService.setCardEmulationRoute(route.route);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ }
+
+ /**
+ * Get the {@link NfcExecutionEnvironment} that is embedded with the
+ * {@link NFcAdapter}.
+ *
+ * <p class="note">
+ * Requires the {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} permission.
+ *
+ * @return a {@link NfcExecutionEnvironment}, or null if there is no embedded NFC-EE
+ */
+ public NfcExecutionEnvironment getEmbeddedExecutionEnvironment() {
+ return sEmbeddedEe;
+ }
+}
diff --git a/nfc-extras/java/com/android/nfc_extras/NfcExecutionEnvironment.java b/nfc-extras/java/com/android/nfc_extras/NfcExecutionEnvironment.java
new file mode 100644
index 0000000..3efe492
--- /dev/null
+++ b/nfc-extras/java/com/android/nfc_extras/NfcExecutionEnvironment.java
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2011 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.nfc_extras;
+
+import java.io.IOException;
+
+import android.annotation.SdkConstant;
+import android.annotation.SdkConstant.SdkConstantType;
+import android.content.Context;
+import android.nfc.INfcAdapterExtras;
+import android.nfc.NfcAdapter;
+import android.os.Binder;
+import android.os.Bundle;
+import android.os.IBinder;
+import android.os.RemoteException;
+
+public class NfcExecutionEnvironment {
+ private final INfcAdapterExtras mService;
+
+ /**
+ * Broadcast Action: An ISO-DEP AID was selected.
+ *
+ * <p>This happens as the result of a 'SELECT AID' command from an
+ * external NFC reader/writer.
+ *
+ * <p>Always contains the extra field {@link #EXTRA_AID}
+ *
+ * <p class="note">
+ * Requires the {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} permission
+ * to receive.
+ */
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+ public static final String ACTION_AID_SELECTED =
+ "com.android.nfc_extras.action.AID_SELECTED";
+
+ /**
+ * Mandatory byte array extra field in {@link #ACTION_AID_SELECTED}.
+ *
+ * <p>Contains the AID selected.
+ * @hide
+ */
+ public static final String EXTRA_AID = "com.android.nfc_extras.extra.AID";
+
+ NfcExecutionEnvironment(INfcAdapterExtras service) {
+ mService = service;
+ }
+
+ /**
+ * Open the NFC Execution Environment on its contact interface.
+ *
+ * <p>Only one process may open the secure element at a time. If it is
+ * already open, an {@link IOException} is thrown.
+ *
+ * <p>All other NFC functionality is disabled while the NFC-EE is open
+ * on its contact interface, so make sure to call {@link #close} once complete.
+ *
+ * <p class="note">
+ * Requires the {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} permission.
+ *
+ * @throws IOException if the NFC-EE is already open, or some other error occurs
+ */
+ public void open() throws IOException {
+ try {
+ Bundle b = mService.open(new Binder());
+ throwBundle(b);
+ } catch (RemoteException e) {
+ return;
+ }
+ }
+
+ /**
+ * Close the NFC Execution Environment on its contact interface.
+ *
+ * <p class="note">
+ * Requires the {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} permission.
+ *
+ * @throws IOException if the NFC-EE is already open, or some other error occurs
+ */
+ public void close() throws IOException {
+ try {
+ throwBundle(mService.close());
+ } catch (RemoteException e) {
+ return;
+ }
+ }
+
+ /**
+ * Send raw commands to the NFC-EE and receive the response.
+ *
+ * <p class="note">
+ * Requires the {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} permission.
+ *
+ * @throws IOException if the NFC-EE is not open, or some other error occurs
+ */
+ public byte[] transceive(byte[] in) throws IOException {
+ Bundle b;
+ try {
+ b = mService.transceive(in);
+ } catch (RemoteException e) {
+ throw new IOException(e.getMessage());
+ }
+ throwBundle(b);
+ return b.getByteArray("out");
+ }
+
+ private static void throwBundle(Bundle b) throws IOException {
+ if (b.getInt("e") == -1) {
+ throw new IOException(b.getString("m"));
+ }
+ }
+}