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frameworks_base/services/java/com/android/server/usb/UsbSettingsManager.java
Dianne Hackborn 5ac72a2959 Improve multi-user broadcasts. 
You can now use ALL and CURRENT when sending broadcasts, to specify
where the broadcast goes.

Sticky broadcasts are now correctly separated per user, and registered
receivers are filtered based on the requested target user.

New Context APIs for more kinds of sending broadcasts as users.

Updating a bunch of system code that sends broadcasts to explicitly
specify which user the broadcast goes to.

Made a single version of the code for interpreting the requested
target user ID that all entries to activity manager (start activity,
send broadcast, start service) use.

Change-Id: Ie29f02dd5242ef8c8fa56c54593a315cd2574e1c
2012-08-30 14:33:22 -07:00

1022 lines
40 KiB
Java
Raw Blame History

/*
* 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.server.usb;
import android.app.PendingIntent;
import android.content.ActivityNotFoundException;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.ResolveInfo;
import android.content.res.XmlResourceParser;
import android.hardware.usb.UsbAccessory;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbInterface;
import android.hardware.usb.UsbManager;
import android.os.Binder;
import android.os.FileUtils;
import android.os.Process;
import android.os.UserHandle;
import android.util.Slog;
import android.util.SparseBooleanArray;
import android.util.Xml;
import com.android.internal.content.PackageMonitor;
import com.android.internal.util.FastXmlSerializer;
import com.android.internal.util.XmlUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
class UsbSettingsManager {
private static final String TAG = "UsbSettingsManager";
private static final boolean DEBUG = false;
private static final File sSettingsFile = new File("/data/system/usb_device_manager.xml");
private final Context mContext;
private final PackageManager mPackageManager;
// Temporary mapping USB device name to list of UIDs with permissions for the device
private final HashMap<String, SparseBooleanArray> mDevicePermissionMap =
new HashMap<String, SparseBooleanArray>();
// Temporary mapping UsbAccessory to list of UIDs with permissions for the accessory
private final HashMap<UsbAccessory, SparseBooleanArray> mAccessoryPermissionMap =
new HashMap<UsbAccessory, SparseBooleanArray>();
// Maps DeviceFilter to user preferred application package
private final HashMap<DeviceFilter, String> mDevicePreferenceMap =
new HashMap<DeviceFilter, String>();
// Maps AccessoryFilter to user preferred application package
private final HashMap<AccessoryFilter, String> mAccessoryPreferenceMap =
new HashMap<AccessoryFilter, String>();
private final Object mLock = new Object();
// This class is used to describe a USB device.
// When used in HashMaps all values must be specified,
// but wildcards can be used for any of the fields in
// the package meta-data.
private static class DeviceFilter {
// USB Vendor ID (or -1 for unspecified)
public final int mVendorId;
// USB Product ID (or -1 for unspecified)
public final int mProductId;
// USB device or interface class (or -1 for unspecified)
public final int mClass;
// USB device subclass (or -1 for unspecified)
public final int mSubclass;
// USB device protocol (or -1 for unspecified)
public final int mProtocol;
public DeviceFilter(int vid, int pid, int clasz, int subclass, int protocol) {
mVendorId = vid;
mProductId = pid;
mClass = clasz;
mSubclass = subclass;
mProtocol = protocol;
}
public DeviceFilter(UsbDevice device) {
mVendorId = device.getVendorId();
mProductId = device.getProductId();
mClass = device.getDeviceClass();
mSubclass = device.getDeviceSubclass();
mProtocol = device.getDeviceProtocol();
}
public static DeviceFilter read(XmlPullParser parser)
throws XmlPullParserException, IOException {
int vendorId = -1;
int productId = -1;
int deviceClass = -1;
int deviceSubclass = -1;
int deviceProtocol = -1;
int count = parser.getAttributeCount();
for (int i = 0; i < count; i++) {
String name = parser.getAttributeName(i);
// All attribute values are ints
int value = Integer.parseInt(parser.getAttributeValue(i));
if ("vendor-id".equals(name)) {
vendorId = value;
} else if ("product-id".equals(name)) {
productId = value;
} else if ("class".equals(name)) {
deviceClass = value;
} else if ("subclass".equals(name)) {
deviceSubclass = value;
} else if ("protocol".equals(name)) {
deviceProtocol = value;
}
}
return new DeviceFilter(vendorId, productId,
deviceClass, deviceSubclass, deviceProtocol);
}
public void write(XmlSerializer serializer) throws IOException {
serializer.startTag(null, "usb-device");
if (mVendorId != -1) {
serializer.attribute(null, "vendor-id", Integer.toString(mVendorId));
}
if (mProductId != -1) {
serializer.attribute(null, "product-id", Integer.toString(mProductId));
}
if (mClass != -1) {
serializer.attribute(null, "class", Integer.toString(mClass));
}
if (mSubclass != -1) {
serializer.attribute(null, "subclass", Integer.toString(mSubclass));
}
if (mProtocol != -1) {
serializer.attribute(null, "protocol", Integer.toString(mProtocol));
}
serializer.endTag(null, "usb-device");
}
private boolean matches(int clasz, int subclass, int protocol) {
return ((mClass == -1 || clasz == mClass) &&
(mSubclass == -1 || subclass == mSubclass) &&
(mProtocol == -1 || protocol == mProtocol));
}
public boolean matches(UsbDevice device) {
if (mVendorId != -1 && device.getVendorId() != mVendorId) return false;
if (mProductId != -1 && device.getProductId() != mProductId) return false;
// check device class/subclass/protocol
if (matches(device.getDeviceClass(), device.getDeviceSubclass(),
device.getDeviceProtocol())) return true;
// if device doesn't match, check the interfaces
int count = device.getInterfaceCount();
for (int i = 0; i < count; i++) {
UsbInterface intf = device.getInterface(i);
if (matches(intf.getInterfaceClass(), intf.getInterfaceSubclass(),
intf.getInterfaceProtocol())) return true;
}
return false;
}
public boolean matches(DeviceFilter f) {
if (mVendorId != -1 && f.mVendorId != mVendorId) return false;
if (mProductId != -1 && f.mProductId != mProductId) return false;
// check device class/subclass/protocol
return matches(f.mClass, f.mSubclass, f.mProtocol);
}
@Override
public boolean equals(Object obj) {
// can't compare if we have wildcard strings
if (mVendorId == -1 || mProductId == -1 ||
mClass == -1 || mSubclass == -1 || mProtocol == -1) {
return false;
}
if (obj instanceof DeviceFilter) {
DeviceFilter filter = (DeviceFilter)obj;
return (filter.mVendorId == mVendorId &&
filter.mProductId == mProductId &&
filter.mClass == mClass &&
filter.mSubclass == mSubclass &&
filter.mProtocol == mProtocol);
}
if (obj instanceof UsbDevice) {
UsbDevice device = (UsbDevice)obj;
return (device.getVendorId() == mVendorId &&
device.getProductId() == mProductId &&
device.getDeviceClass() == mClass &&
device.getDeviceSubclass() == mSubclass &&
device.getDeviceProtocol() == mProtocol);
}
return false;
}
@Override
public int hashCode() {
return (((mVendorId << 16) | mProductId) ^
((mClass << 16) | (mSubclass << 8) | mProtocol));
}
@Override
public String toString() {
return "DeviceFilter[mVendorId=" + mVendorId + ",mProductId=" + mProductId +
",mClass=" + mClass + ",mSubclass=" + mSubclass +
",mProtocol=" + mProtocol + "]";
}
}
// This class is used to describe a USB accessory.
// When used in HashMaps all values must be specified,
// but wildcards can be used for any of the fields in
// the package meta-data.
private static class AccessoryFilter {
// USB accessory manufacturer (or null for unspecified)
public final String mManufacturer;
// USB accessory model (or null for unspecified)
public final String mModel;
// USB accessory version (or null for unspecified)
public final String mVersion;
public AccessoryFilter(String manufacturer, String model, String version) {
mManufacturer = manufacturer;
mModel = model;
mVersion = version;
}
public AccessoryFilter(UsbAccessory accessory) {
mManufacturer = accessory.getManufacturer();
mModel = accessory.getModel();
mVersion = accessory.getVersion();
}
public static AccessoryFilter read(XmlPullParser parser)
throws XmlPullParserException, IOException {
String manufacturer = null;
String model = null;
String version = null;
int count = parser.getAttributeCount();
for (int i = 0; i < count; i++) {
String name = parser.getAttributeName(i);
String value = parser.getAttributeValue(i);
if ("manufacturer".equals(name)) {
manufacturer = value;
} else if ("model".equals(name)) {
model = value;
} else if ("version".equals(name)) {
version = value;
}
}
return new AccessoryFilter(manufacturer, model, version);
}
public void write(XmlSerializer serializer)throws IOException {
serializer.startTag(null, "usb-accessory");
if (mManufacturer != null) {
serializer.attribute(null, "manufacturer", mManufacturer);
}
if (mModel != null) {
serializer.attribute(null, "model", mModel);
}
if (mVersion != null) {
serializer.attribute(null, "version", mVersion);
}
serializer.endTag(null, "usb-accessory");
}
public boolean matches(UsbAccessory acc) {
if (mManufacturer != null && !acc.getManufacturer().equals(mManufacturer)) return false;
if (mModel != null && !acc.getModel().equals(mModel)) return false;
if (mVersion != null && !acc.getVersion().equals(mVersion)) return false;
return true;
}
public boolean matches(AccessoryFilter f) {
if (mManufacturer != null && !f.mManufacturer.equals(mManufacturer)) return false;
if (mModel != null && !f.mModel.equals(mModel)) return false;
if (mVersion != null && !f.mVersion.equals(mVersion)) return false;
return true;
}
@Override
public boolean equals(Object obj) {
// can't compare if we have wildcard strings
if (mManufacturer == null || mModel == null || mVersion == null) {
return false;
}
if (obj instanceof AccessoryFilter) {
AccessoryFilter filter = (AccessoryFilter)obj;
return (mManufacturer.equals(filter.mManufacturer) &&
mModel.equals(filter.mModel) &&
mVersion.equals(filter.mVersion));
}
if (obj instanceof UsbAccessory) {
UsbAccessory accessory = (UsbAccessory)obj;
return (mManufacturer.equals(accessory.getManufacturer()) &&
mModel.equals(accessory.getModel()) &&
mVersion.equals(accessory.getVersion()));
}
return false;
}
@Override
public int hashCode() {
return ((mManufacturer == null ? 0 : mManufacturer.hashCode()) ^
(mModel == null ? 0 : mModel.hashCode()) ^
(mVersion == null ? 0 : mVersion.hashCode()));
}
@Override
public String toString() {
return "AccessoryFilter[mManufacturer=\"" + mManufacturer +
"\", mModel=\"" + mModel +
"\", mVersion=\"" + mVersion + "\"]";
}
}
private class MyPackageMonitor extends PackageMonitor {
public void onPackageAdded(String packageName, int uid) {
handlePackageUpdate(packageName);
}
public void onPackageChanged(String packageName, int uid, String[] components) {
handlePackageUpdate(packageName);
}
public void onPackageRemoved(String packageName, int uid) {
clearDefaults(packageName);
}
}
MyPackageMonitor mPackageMonitor = new MyPackageMonitor();
public UsbSettingsManager(Context context) {
mContext = context;
mPackageManager = context.getPackageManager();
synchronized (mLock) {
readSettingsLocked();
}
mPackageMonitor.register(context, null, true);
}
private void readPreference(XmlPullParser parser)
throws XmlPullParserException, IOException {
String packageName = null;
int count = parser.getAttributeCount();
for (int i = 0; i < count; i++) {
if ("package".equals(parser.getAttributeName(i))) {
packageName = parser.getAttributeValue(i);
break;
}
}
XmlUtils.nextElement(parser);
if ("usb-device".equals(parser.getName())) {
DeviceFilter filter = DeviceFilter.read(parser);
mDevicePreferenceMap.put(filter, packageName);
} else if ("usb-accessory".equals(parser.getName())) {
AccessoryFilter filter = AccessoryFilter.read(parser);
mAccessoryPreferenceMap.put(filter, packageName);
}
XmlUtils.nextElement(parser);
}
private void readSettingsLocked() {
FileInputStream stream = null;
try {
stream = new FileInputStream(sSettingsFile);
XmlPullParser parser = Xml.newPullParser();
parser.setInput(stream, null);
XmlUtils.nextElement(parser);
while (parser.getEventType() != XmlPullParser.END_DOCUMENT) {
String tagName = parser.getName();
if ("preference".equals(tagName)) {
readPreference(parser);
} else {
XmlUtils.nextElement(parser);
}
}
} catch (FileNotFoundException e) {
if (DEBUG) Slog.d(TAG, "settings file not found");
} catch (Exception e) {
Slog.e(TAG, "error reading settings file, deleting to start fresh", e);
sSettingsFile.delete();
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
}
private void writeSettingsLocked() {
FileOutputStream fos = null;
try {
FileOutputStream fstr = new FileOutputStream(sSettingsFile);
if (DEBUG) Slog.d(TAG, "writing settings to " + fstr);
BufferedOutputStream str = new BufferedOutputStream(fstr);
FastXmlSerializer serializer = new FastXmlSerializer();
serializer.setOutput(str, "utf-8");
serializer.startDocument(null, true);
serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true);
serializer.startTag(null, "settings");
for (DeviceFilter filter : mDevicePreferenceMap.keySet()) {
serializer.startTag(null, "preference");
serializer.attribute(null, "package", mDevicePreferenceMap.get(filter));
filter.write(serializer);
serializer.endTag(null, "preference");
}
for (AccessoryFilter filter : mAccessoryPreferenceMap.keySet()) {
serializer.startTag(null, "preference");
serializer.attribute(null, "package", mAccessoryPreferenceMap.get(filter));
filter.write(serializer);
serializer.endTag(null, "preference");
}
serializer.endTag(null, "settings");
serializer.endDocument();
str.flush();
FileUtils.sync(fstr);
str.close();
} catch (Exception e) {
Slog.e(TAG, "error writing settings file, deleting to start fresh", e);
sSettingsFile.delete();
}
}
// Checks to see if a package matches a device or accessory.
// Only one of device and accessory should be non-null.
private boolean packageMatchesLocked(ResolveInfo info, String metaDataName,
UsbDevice device, UsbAccessory accessory) {
ActivityInfo ai = info.activityInfo;
XmlResourceParser parser = null;
try {
parser = ai.loadXmlMetaData(mPackageManager, metaDataName);
if (parser == null) {
Slog.w(TAG, "no meta-data for " + info);
return false;
}
XmlUtils.nextElement(parser);
while (parser.getEventType() != XmlPullParser.END_DOCUMENT) {
String tagName = parser.getName();
if (device != null && "usb-device".equals(tagName)) {
DeviceFilter filter = DeviceFilter.read(parser);
if (filter.matches(device)) {
return true;
}
}
else if (accessory != null && "usb-accessory".equals(tagName)) {
AccessoryFilter filter = AccessoryFilter.read(parser);
if (filter.matches(accessory)) {
return true;
}
}
XmlUtils.nextElement(parser);
}
} catch (Exception e) {
Slog.w(TAG, "Unable to load component info " + info.toString(), e);
} finally {
if (parser != null) parser.close();
}
return false;
}
private final ArrayList<ResolveInfo> getDeviceMatchesLocked(UsbDevice device, Intent intent) {
ArrayList<ResolveInfo> matches = new ArrayList<ResolveInfo>();
List<ResolveInfo> resolveInfos = mPackageManager.queryIntentActivities(intent,
PackageManager.GET_META_DATA);
int count = resolveInfos.size();
for (int i = 0; i < count; i++) {
ResolveInfo resolveInfo = resolveInfos.get(i);
if (packageMatchesLocked(resolveInfo, intent.getAction(), device, null)) {
matches.add(resolveInfo);
}
}
return matches;
}
private final ArrayList<ResolveInfo> getAccessoryMatchesLocked(
UsbAccessory accessory, Intent intent) {
ArrayList<ResolveInfo> matches = new ArrayList<ResolveInfo>();
List<ResolveInfo> resolveInfos = mPackageManager.queryIntentActivities(intent,
PackageManager.GET_META_DATA);
int count = resolveInfos.size();
for (int i = 0; i < count; i++) {
ResolveInfo resolveInfo = resolveInfos.get(i);
if (packageMatchesLocked(resolveInfo, intent.getAction(), null, accessory)) {
matches.add(resolveInfo);
}
}
return matches;
}
public void deviceAttached(UsbDevice device) {
Intent intent = new Intent(UsbManager.ACTION_USB_DEVICE_ATTACHED);
intent.putExtra(UsbManager.EXTRA_DEVICE, device);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
ArrayList<ResolveInfo> matches;
String defaultPackage;
synchronized (mLock) {
matches = getDeviceMatchesLocked(device, intent);
// Launch our default activity directly, if we have one.
// Otherwise we will start the UsbResolverActivity to allow the user to choose.
defaultPackage = mDevicePreferenceMap.get(new DeviceFilter(device));
}
// Send broadcast to running activity with registered intent
mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
// Start activity with registered intent
resolveActivity(intent, matches, defaultPackage, device, null);
}
public void deviceDetached(UsbDevice device) {
// clear temporary permissions for the device
mDevicePermissionMap.remove(device.getDeviceName());
Intent intent = new Intent(UsbManager.ACTION_USB_DEVICE_DETACHED);
intent.putExtra(UsbManager.EXTRA_DEVICE, device);
if (DEBUG) Slog.d(TAG, "usbDeviceRemoved, sending " + intent);
mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
}
public void accessoryAttached(UsbAccessory accessory) {
Intent intent = new Intent(UsbManager.ACTION_USB_ACCESSORY_ATTACHED);
intent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
ArrayList<ResolveInfo> matches;
String defaultPackage;
synchronized (mLock) {
matches = getAccessoryMatchesLocked(accessory, intent);
// Launch our default activity directly, if we have one.
// Otherwise we will start the UsbResolverActivity to allow the user to choose.
defaultPackage = mAccessoryPreferenceMap.get(new AccessoryFilter(accessory));
}
resolveActivity(intent, matches, defaultPackage, null, accessory);
}
public void accessoryDetached(UsbAccessory accessory) {
// clear temporary permissions for the accessory
mAccessoryPermissionMap.remove(accessory);
Intent intent = new Intent(
UsbManager.ACTION_USB_ACCESSORY_DETACHED);
intent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
}
private void resolveActivity(Intent intent, ArrayList<ResolveInfo> matches,
String defaultPackage, UsbDevice device, UsbAccessory accessory) {
int count = matches.size();
// don't show the resolver activity if there are no choices available
if (count == 0) {
if (accessory != null) {
String uri = accessory.getUri();
if (uri != null && uri.length() > 0) {
// display URI to user
// start UsbResolverActivity so user can choose an activity
Intent dialogIntent = new Intent();
dialogIntent.setClassName("com.android.systemui",
"com.android.systemui.usb.UsbAccessoryUriActivity");
dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
dialogIntent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
dialogIntent.putExtra("uri", uri);
try {
mContext.startActivity(dialogIntent);
} catch (ActivityNotFoundException e) {
Slog.e(TAG, "unable to start UsbAccessoryUriActivity");
}
}
}
// do nothing
return;
}
ResolveInfo defaultRI = null;
if (count == 1 && defaultPackage == null) {
// Check to see if our single choice is on the system partition.
// If so, treat it as our default without calling UsbResolverActivity
ResolveInfo rInfo = matches.get(0);
if (rInfo.activityInfo != null &&
rInfo.activityInfo.applicationInfo != null &&
(rInfo.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
defaultRI = rInfo;
}
}
if (defaultRI == null && defaultPackage != null) {
// look for default activity
for (int i = 0; i < count; i++) {
ResolveInfo rInfo = matches.get(i);
if (rInfo.activityInfo != null &&
defaultPackage.equals(rInfo.activityInfo.packageName)) {
defaultRI = rInfo;
break;
}
}
}
if (defaultRI != null) {
// grant permission for default activity
if (device != null) {
grantDevicePermission(device, defaultRI.activityInfo.applicationInfo.uid);
} else if (accessory != null) {
grantAccessoryPermission(accessory, defaultRI.activityInfo.applicationInfo.uid);
}
// start default activity directly
try {
intent.setComponent(
new ComponentName(defaultRI.activityInfo.packageName,
defaultRI.activityInfo.name));
mContext.startActivity(intent);
} catch (ActivityNotFoundException e) {
Slog.e(TAG, "startActivity failed", e);
}
} else {
Intent resolverIntent = new Intent();
resolverIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (count == 1) {
// start UsbConfirmActivity if there is only one choice
resolverIntent.setClassName("com.android.systemui",
"com.android.systemui.usb.UsbConfirmActivity");
resolverIntent.putExtra("rinfo", matches.get(0));
if (device != null) {
resolverIntent.putExtra(UsbManager.EXTRA_DEVICE, device);
} else {
resolverIntent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
}
} else {
// start UsbResolverActivity so user can choose an activity
resolverIntent.setClassName("com.android.systemui",
"com.android.systemui.usb.UsbResolverActivity");
resolverIntent.putParcelableArrayListExtra("rlist", matches);
resolverIntent.putExtra(Intent.EXTRA_INTENT, intent);
}
try {
mContext.startActivity(resolverIntent);
} catch (ActivityNotFoundException e) {
Slog.e(TAG, "unable to start activity " + resolverIntent);
}
}
}
private boolean clearCompatibleMatchesLocked(String packageName, DeviceFilter filter) {
boolean changed = false;
for (DeviceFilter test : mDevicePreferenceMap.keySet()) {
if (filter.matches(test)) {
mDevicePreferenceMap.remove(test);
changed = true;
}
}
return changed;
}
private boolean clearCompatibleMatchesLocked(String packageName, AccessoryFilter filter) {
boolean changed = false;
for (AccessoryFilter test : mAccessoryPreferenceMap.keySet()) {
if (filter.matches(test)) {
mAccessoryPreferenceMap.remove(test);
changed = true;
}
}
return changed;
}
private boolean handlePackageUpdateLocked(String packageName, ActivityInfo aInfo,
String metaDataName) {
XmlResourceParser parser = null;
boolean changed = false;
try {
parser = aInfo.loadXmlMetaData(mPackageManager, metaDataName);
if (parser == null) return false;
XmlUtils.nextElement(parser);
while (parser.getEventType() != XmlPullParser.END_DOCUMENT) {
String tagName = parser.getName();
if ("usb-device".equals(tagName)) {
DeviceFilter filter = DeviceFilter.read(parser);
if (clearCompatibleMatchesLocked(packageName, filter)) {
changed = true;
}
}
else if ("usb-accessory".equals(tagName)) {
AccessoryFilter filter = AccessoryFilter.read(parser);
if (clearCompatibleMatchesLocked(packageName, filter)) {
changed = true;
}
}
XmlUtils.nextElement(parser);
}
} catch (Exception e) {
Slog.w(TAG, "Unable to load component info " + aInfo.toString(), e);
} finally {
if (parser != null) parser.close();
}
return changed;
}
// Check to see if the package supports any USB devices or accessories.
// If so, clear any non-matching preferences for matching devices/accessories.
private void handlePackageUpdate(String packageName) {
synchronized (mLock) {
PackageInfo info;
boolean changed = false;
try {
info = mPackageManager.getPackageInfo(packageName,
PackageManager.GET_ACTIVITIES | PackageManager.GET_META_DATA);
} catch (NameNotFoundException e) {
Slog.e(TAG, "handlePackageUpdate could not find package " + packageName, e);
return;
}
ActivityInfo[] activities = info.activities;
if (activities == null) return;
for (int i = 0; i < activities.length; i++) {
// check for meta-data, both for devices and accessories
if (handlePackageUpdateLocked(packageName, activities[i],
UsbManager.ACTION_USB_DEVICE_ATTACHED)) {
changed = true;
}
if (handlePackageUpdateLocked(packageName, activities[i],
UsbManager.ACTION_USB_ACCESSORY_ATTACHED)) {
changed = true;
}
}
if (changed) {
writeSettingsLocked();
}
}
}
public boolean hasPermission(UsbDevice device) {
synchronized (mLock) {
SparseBooleanArray uidList = mDevicePermissionMap.get(device.getDeviceName());
if (uidList == null) {
return false;
}
return uidList.get(Binder.getCallingUid());
}
}
public boolean hasPermission(UsbAccessory accessory) {
synchronized (mLock) {
SparseBooleanArray uidList = mAccessoryPermissionMap.get(accessory);
if (uidList == null) {
return false;
}
return uidList.get(Binder.getCallingUid());
}
}
public void checkPermission(UsbDevice device) {
if (!hasPermission(device)) {
throw new SecurityException("User has not given permission to device " + device);
}
}
public void checkPermission(UsbAccessory accessory) {
if (!hasPermission(accessory)) {
throw new SecurityException("User has not given permission to accessory " + accessory);
}
}
private void requestPermissionDialog(Intent intent, String packageName, PendingIntent pi) {
int uid = Binder.getCallingUid();
// compare uid with packageName to foil apps pretending to be someone else
try {
ApplicationInfo aInfo = mPackageManager.getApplicationInfo(packageName, 0);
if (aInfo.uid != uid) {
throw new IllegalArgumentException("package " + packageName +
" does not match caller's uid " + uid);
}
} catch (PackageManager.NameNotFoundException e) {
throw new IllegalArgumentException("package " + packageName + " not found");
}
long identity = Binder.clearCallingIdentity();
intent.setClassName("com.android.systemui",
"com.android.systemui.usb.UsbPermissionActivity");
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra(Intent.EXTRA_INTENT, pi);
intent.putExtra("package", packageName);
intent.putExtra("uid", uid);
try {
mContext.startActivity(intent);
} catch (ActivityNotFoundException e) {
Slog.e(TAG, "unable to start UsbPermissionActivity");
} finally {
Binder.restoreCallingIdentity(identity);
}
}
public void requestPermission(UsbDevice device, String packageName, PendingIntent pi) {
Intent intent = new Intent();
// respond immediately if permission has already been granted
if (hasPermission(device)) {
intent.putExtra(UsbManager.EXTRA_DEVICE, device);
intent.putExtra(UsbManager.EXTRA_PERMISSION_GRANTED, true);
try {
pi.send(mContext, 0, intent);
} catch (PendingIntent.CanceledException e) {
if (DEBUG) Slog.d(TAG, "requestPermission PendingIntent was cancelled");
}
return;
}
// start UsbPermissionActivity so user can choose an activity
intent.putExtra(UsbManager.EXTRA_DEVICE, device);
requestPermissionDialog(intent, packageName, pi);
}
public void requestPermission(UsbAccessory accessory, String packageName, PendingIntent pi) {
Intent intent = new Intent();
// respond immediately if permission has already been granted
if (hasPermission(accessory)) {
intent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
intent.putExtra(UsbManager.EXTRA_PERMISSION_GRANTED, true);
try {
pi.send(mContext, 0, intent);
} catch (PendingIntent.CanceledException e) {
if (DEBUG) Slog.d(TAG, "requestPermission PendingIntent was cancelled");
}
return;
}
intent.putExtra(UsbManager.EXTRA_ACCESSORY, accessory);
requestPermissionDialog(intent, packageName, pi);
}
public void setDevicePackage(UsbDevice device, String packageName) {
DeviceFilter filter = new DeviceFilter(device);
boolean changed = false;
synchronized (mLock) {
if (packageName == null) {
changed = (mDevicePreferenceMap.remove(filter) != null);
} else {
changed = !packageName.equals(mDevicePreferenceMap.get(filter));
if (changed) {
mDevicePreferenceMap.put(filter, packageName);
}
}
if (changed) {
writeSettingsLocked();
}
}
}
public void setAccessoryPackage(UsbAccessory accessory, String packageName) {
AccessoryFilter filter = new AccessoryFilter(accessory);
boolean changed = false;
synchronized (mLock) {
if (packageName == null) {
changed = (mAccessoryPreferenceMap.remove(filter) != null);
} else {
changed = !packageName.equals(mAccessoryPreferenceMap.get(filter));
if (changed) {
mAccessoryPreferenceMap.put(filter, packageName);
}
}
if (changed) {
writeSettingsLocked();
}
}
}
public void grantDevicePermission(UsbDevice device, int uid) {
synchronized (mLock) {
String deviceName = device.getDeviceName();
SparseBooleanArray uidList = mDevicePermissionMap.get(deviceName);
if (uidList == null) {
uidList = new SparseBooleanArray(1);
mDevicePermissionMap.put(deviceName, uidList);
}
uidList.put(uid, true);
}
}
public void grantAccessoryPermission(UsbAccessory accessory, int uid) {
synchronized (mLock) {
SparseBooleanArray uidList = mAccessoryPermissionMap.get(accessory);
if (uidList == null) {
uidList = new SparseBooleanArray(1);
mAccessoryPermissionMap.put(accessory, uidList);
}
uidList.put(uid, true);
}
}
public boolean hasDefaults(String packageName) {
synchronized (mLock) {
if (mDevicePreferenceMap.values().contains(packageName)) return true;
if (mAccessoryPreferenceMap.values().contains(packageName)) return true;
return false;
}
}
public void clearDefaults(String packageName) {
synchronized (mLock) {
if (clearPackageDefaultsLocked(packageName)) {
writeSettingsLocked();
}
}
}
private boolean clearPackageDefaultsLocked(String packageName) {
boolean cleared = false;
synchronized (mLock) {
if (mDevicePreferenceMap.containsValue(packageName)) {
// make a copy of the key set to avoid ConcurrentModificationException
Object[] keys = mDevicePreferenceMap.keySet().toArray();
for (int i = 0; i < keys.length; i++) {
Object key = keys[i];
if (packageName.equals(mDevicePreferenceMap.get(key))) {
mDevicePreferenceMap.remove(key);
cleared = true;
}
}
}
if (mAccessoryPreferenceMap.containsValue(packageName)) {
// make a copy of the key set to avoid ConcurrentModificationException
Object[] keys = mAccessoryPreferenceMap.keySet().toArray();
for (int i = 0; i < keys.length; i++) {
Object key = keys[i];
if (packageName.equals(mAccessoryPreferenceMap.get(key))) {
mAccessoryPreferenceMap.remove(key);
cleared = true;
}
}
}
return cleared;
}
}
public void dump(FileDescriptor fd, PrintWriter pw) {
synchronized (mLock) {
pw.println(" Device permissions:");
for (String deviceName : mDevicePermissionMap.keySet()) {
pw.print(" " + deviceName + ": ");
SparseBooleanArray uidList = mDevicePermissionMap.get(deviceName);
int count = uidList.size();
for (int i = 0; i < count; i++) {
pw.print(Integer.toString(uidList.keyAt(i)) + " ");
}
pw.println("");
}
pw.println(" Accessory permissions:");
for (UsbAccessory accessory : mAccessoryPermissionMap.keySet()) {
pw.print(" " + accessory + ": ");
SparseBooleanArray uidList = mAccessoryPermissionMap.get(accessory);
int count = uidList.size();
for (int i = 0; i < count; i++) {
pw.print(Integer.toString(uidList.keyAt(i)) + " ");
}
pw.println("");
}
pw.println(" Device preferences:");
for (DeviceFilter filter : mDevicePreferenceMap.keySet()) {
pw.println(" " + filter + ": " + mDevicePreferenceMap.get(filter));
}
pw.println(" Accessory preferences:");
for (AccessoryFilter filter : mAccessoryPreferenceMap.keySet()) {
pw.println(" " + filter + ": " + mAccessoryPreferenceMap.get(filter));
}
}
}
}
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