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Diffstat (limited to 'services/java/com/android/server/UsbService.java')
-rw-r--r--services/java/com/android/server/UsbService.java241
1 files changed, 0 insertions, 241 deletions
diff --git a/services/java/com/android/server/UsbService.java b/services/java/com/android/server/UsbService.java
deleted file mode 100644
index 578db0e..0000000
--- a/services/java/com/android/server/UsbService.java
+++ /dev/null
@@ -1,241 +0,0 @@
-/*
- * Copyright (C) 2010 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;
-
-import android.content.ContentResolver;
-import android.content.Context;
-import android.content.Intent;
-import android.hardware.UsbManager;
-import android.net.Uri;
-import android.os.Handler;
-import android.os.Message;
-import android.os.UEventObserver;
-import android.provider.Settings;
-import android.util.Log;
-import android.util.Slog;
-
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.FileReader;
-import java.util.ArrayList;
-
-/**
- * <p>UsbService monitors for changes to USB state.
- */
-class UsbService {
- private static final String TAG = UsbService.class.getSimpleName();
- private static final boolean LOG = false;
-
- private static final String USB_CONNECTED_MATCH =
- "DEVPATH=/devices/virtual/switch/usb_connected";
- private static final String USB_CONFIGURATION_MATCH =
- "DEVPATH=/devices/virtual/switch/usb_configuration";
- private static final String USB_FUNCTIONS_MATCH =
- "DEVPATH=/devices/virtual/usb_composite/";
- private static final String USB_CONNECTED_PATH =
- "/sys/class/switch/usb_connected/state";
- private static final String USB_CONFIGURATION_PATH =
- "/sys/class/switch/usb_configuration/state";
- private static final String USB_COMPOSITE_CLASS_PATH =
- "/sys/class/usb_composite";
-
- private static final int MSG_UPDATE = 0;
-
- // Delay for debouncing USB disconnects.
- // We often get rapid connect/disconnect events when enabling USB functions,
- // which need debouncing.
- private static final int UPDATE_DELAY = 1000;
-
- // current connected and configuration state
- private int mConnected;
- private int mConfiguration;
-
- // last broadcasted connected and configuration state
- private int mLastConnected = -1;
- private int mLastConfiguration = -1;
-
- // lists of enabled and disabled USB functions
- private final ArrayList<String> mEnabledFunctions = new ArrayList<String>();
- private final ArrayList<String> mDisabledFunctions = new ArrayList<String>();
-
- private boolean mSystemReady;
-
- private final Context mContext;
-
- private final UEventObserver mUEventObserver = new UEventObserver() {
- @Override
- public void onUEvent(UEventObserver.UEvent event) {
- if (Log.isLoggable(TAG, Log.VERBOSE)) {
- Slog.v(TAG, "USB UEVENT: " + event.toString());
- }
-
- synchronized (this) {
- String name = event.get("SWITCH_NAME");
- String state = event.get("SWITCH_STATE");
- if (name != null && state != null) {
- try {
- int intState = Integer.parseInt(state);
- if ("usb_connected".equals(name)) {
- mConnected = intState;
- // trigger an Intent broadcast
- if (mSystemReady) {
- // debounce disconnects
- update(mConnected == 0);
- }
- } else if ("usb_configuration".equals(name)) {
- mConfiguration = intState;
- // trigger an Intent broadcast
- if (mSystemReady) {
- update(mConnected == 0);
- }
- }
- } catch (NumberFormatException e) {
- Slog.e(TAG, "Could not parse switch state from event " + event);
- }
- } else {
- String function = event.get("FUNCTION");
- String enabledStr = event.get("ENABLED");
- if (function != null && enabledStr != null) {
- // Note: we do not broadcast a change when a function is enabled or disabled.
- // We just record the state change for the next broadcast.
- boolean enabled = "1".equals(enabledStr);
- if (enabled) {
- if (!mEnabledFunctions.contains(function)) {
- mEnabledFunctions.add(function);
- }
- mDisabledFunctions.remove(function);
- } else {
- if (!mDisabledFunctions.contains(function)) {
- mDisabledFunctions.add(function);
- }
- mEnabledFunctions.remove(function);
- }
- }
- }
- }
- }
- };
-
- public UsbService(Context context) {
- mContext = context;
- init(); // set initial status
-
- if (mConfiguration >= 0) {
- mUEventObserver.startObserving(USB_CONNECTED_MATCH);
- mUEventObserver.startObserving(USB_CONFIGURATION_MATCH);
- mUEventObserver.startObserving(USB_FUNCTIONS_MATCH);
- }
- }
-
- private final void init() {
- char[] buffer = new char[1024];
-
- mConfiguration = -1;
- try {
- FileReader file = new FileReader(USB_CONNECTED_PATH);
- int len = file.read(buffer, 0, 1024);
- file.close();
- mConnected = Integer.valueOf((new String(buffer, 0, len)).trim());
-
- file = new FileReader(USB_CONFIGURATION_PATH);
- len = file.read(buffer, 0, 1024);
- file.close();
- mConfiguration = Integer.valueOf((new String(buffer, 0, len)).trim());
- } catch (FileNotFoundException e) {
- Slog.i(TAG, "This kernel does not have USB configuration switch support");
- } catch (Exception e) {
- Slog.e(TAG, "" , e);
- }
- if (mConfiguration < 0)
- return;
-
- try {
- File[] files = new File(USB_COMPOSITE_CLASS_PATH).listFiles();
- for (int i = 0; i < files.length; i++) {
- File file = new File(files[i], "enable");
- FileReader reader = new FileReader(file);
- int len = reader.read(buffer, 0, 1024);
- reader.close();
- int value = Integer.valueOf((new String(buffer, 0, len)).trim());
- String functionName = files[i].getName();
- if (value == 1) {
- mEnabledFunctions.add(functionName);
- } else {
- mDisabledFunctions.add(functionName);
- }
- }
- } catch (FileNotFoundException e) {
- Slog.w(TAG, "This kernel does not have USB composite class support");
- } catch (Exception e) {
- Slog.e(TAG, "" , e);
- }
- }
-
- void systemReady() {
- synchronized (this) {
- update(false);
- mSystemReady = true;
- }
- }
-
- private final void update(boolean delayed) {
- mHandler.removeMessages(MSG_UPDATE);
- mHandler.sendEmptyMessageDelayed(MSG_UPDATE, delayed ? UPDATE_DELAY : 0);
- }
-
- private final Handler mHandler = new Handler() {
- private void addEnabledFunctions(Intent intent) {
- // include state of all USB functions in our extras
- for (int i = 0; i < mEnabledFunctions.size(); i++) {
- intent.putExtra(mEnabledFunctions.get(i), UsbManager.USB_FUNCTION_ENABLED);
- }
- for (int i = 0; i < mDisabledFunctions.size(); i++) {
- intent.putExtra(mDisabledFunctions.get(i), UsbManager.USB_FUNCTION_DISABLED);
- }
- }
-
- @Override
- public void handleMessage(Message msg) {
- switch (msg.what) {
- case MSG_UPDATE:
- synchronized (this) {
- if (mConnected != mLastConnected || mConfiguration != mLastConfiguration) {
-
- final ContentResolver cr = mContext.getContentResolver();
- if (Settings.Secure.getInt(cr,
- Settings.Secure.DEVICE_PROVISIONED, 0) == 0) {
- Slog.i(TAG, "Device not provisioned, skipping USB broadcast");
- return;
- }
-
- mLastConnected = mConnected;
- mLastConfiguration = mConfiguration;
-
- // send a sticky broadcast containing current USB state
- Intent intent = new Intent(UsbManager.ACTION_USB_STATE);
- intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
- intent.putExtra(UsbManager.USB_CONNECTED, mConnected != 0);
- intent.putExtra(UsbManager.USB_CONFIGURATION, mConfiguration);
- addEnabledFunctions(intent);
- mContext.sendStickyBroadcast(intent);
- }
- }
- break;
- }
- }
- };
-}
generated by cgit v1.1 at 2025-08-15 21:33:37 +0000