| /* |
| * 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.am; |
| |
| import android.content.ComponentName; |
| import android.os.Binder; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.UserId; |
| import android.util.Slog; |
| import android.util.SparseArray; |
| |
| import java.io.FileDescriptor; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.Set; |
| |
| /** |
| * Keeps track of content providers by authority (name) and class. It separates the mapping by |
| * user and ones that are not user-specific (system providers). |
| */ |
| public class ProviderMap { |
| |
| private static final String TAG = "ProviderMap"; |
| |
| private static final boolean DBG = false; |
| |
| private final HashMap<String, ContentProviderRecord> mGlobalByName |
| = new HashMap<String, ContentProviderRecord>(); |
| private final HashMap<ComponentName, ContentProviderRecord> mGlobalByClass |
| = new HashMap<ComponentName, ContentProviderRecord>(); |
| |
| private final SparseArray<HashMap<String, ContentProviderRecord>> mProvidersByNamePerUser |
| = new SparseArray<HashMap<String, ContentProviderRecord>>(); |
| private final SparseArray<HashMap<ComponentName, ContentProviderRecord>> mProvidersByClassPerUser |
| = new SparseArray<HashMap<ComponentName, ContentProviderRecord>>(); |
| |
| ContentProviderRecord getProviderByName(String name) { |
| return getProviderByName(name, -1); |
| } |
| |
| ContentProviderRecord getProviderByName(String name, int userId) { |
| if (DBG) { |
| Slog.i(TAG, "getProviderByName: " + name + " , callingUid = " + Binder.getCallingUid()); |
| } |
| // Try to find it in the global list |
| ContentProviderRecord record = mGlobalByName.get(name); |
| if (record != null) { |
| return record; |
| } |
| |
| // Check the current user's list |
| return getProvidersByName(userId).get(name); |
| } |
| |
| ContentProviderRecord getProviderByClass(ComponentName name) { |
| return getProviderByClass(name, -1); |
| } |
| |
| ContentProviderRecord getProviderByClass(ComponentName name, int userId) { |
| if (DBG) { |
| Slog.i(TAG, "getProviderByClass: " + name + ", callingUid = " + Binder.getCallingUid()); |
| } |
| // Try to find it in the global list |
| ContentProviderRecord record = mGlobalByClass.get(name); |
| if (record != null) { |
| return record; |
| } |
| |
| // Check the current user's list |
| return getProvidersByClass(userId).get(name); |
| } |
| |
| void putProviderByName(String name, ContentProviderRecord record) { |
| if (DBG) { |
| Slog.i(TAG, "putProviderByName: " + name + " , callingUid = " + Binder.getCallingUid() |
| + ", record uid = " + record.appInfo.uid); |
| } |
| if (record.appInfo.uid < Process.FIRST_APPLICATION_UID) { |
| mGlobalByName.put(name, record); |
| } else { |
| final int userId = UserId.getUserId(record.appInfo.uid); |
| getProvidersByName(userId).put(name, record); |
| } |
| } |
| |
| void putProviderByClass(ComponentName name, ContentProviderRecord record) { |
| if (DBG) { |
| Slog.i(TAG, "putProviderByClass: " + name + " , callingUid = " + Binder.getCallingUid() |
| + ", record uid = " + record.appInfo.uid); |
| } |
| if (record.appInfo.uid < Process.FIRST_APPLICATION_UID) { |
| mGlobalByClass.put(name, record); |
| } else { |
| final int userId = UserId.getUserId(record.appInfo.uid); |
| getProvidersByClass(userId).put(name, record); |
| } |
| } |
| |
| void removeProviderByName(String name, int optionalUserId) { |
| if (mGlobalByName.containsKey(name)) { |
| if (DBG) |
| Slog.i(TAG, "Removing from globalByName name=" + name); |
| mGlobalByName.remove(name); |
| } else { |
| // TODO: Verify this works, i.e., the caller happens to be from the correct user |
| if (DBG) |
| Slog.i(TAG, |
| "Removing from providersByName name=" + name + " user=" |
| + (optionalUserId == -1 ? Binder.getOrigCallingUser() : optionalUserId)); |
| getProvidersByName(optionalUserId).remove(name); |
| } |
| } |
| |
| void removeProviderByClass(ComponentName name, int optionalUserId) { |
| if (mGlobalByClass.containsKey(name)) { |
| if (DBG) |
| Slog.i(TAG, "Removing from globalByClass name=" + name); |
| mGlobalByClass.remove(name); |
| } else { |
| if (DBG) |
| Slog.i(TAG, |
| "Removing from providersByClass name=" + name + " user=" |
| + (optionalUserId == -1 ? Binder.getOrigCallingUser() : optionalUserId)); |
| getProvidersByClass(optionalUserId).remove(name); |
| } |
| } |
| |
| private HashMap<String, ContentProviderRecord> getProvidersByName(int optionalUserId) { |
| final int userId = optionalUserId >= 0 |
| ? optionalUserId : Binder.getOrigCallingUser(); |
| final HashMap<String, ContentProviderRecord> map = mProvidersByNamePerUser.get(userId); |
| if (map == null) { |
| HashMap<String, ContentProviderRecord> newMap = new HashMap<String, ContentProviderRecord>(); |
| mProvidersByNamePerUser.put(userId, newMap); |
| return newMap; |
| } else { |
| return map; |
| } |
| } |
| |
| HashMap<ComponentName, ContentProviderRecord> getProvidersByClass(int optionalUserId) { |
| final int userId = optionalUserId >= 0 |
| ? optionalUserId : Binder.getOrigCallingUser(); |
| final HashMap<ComponentName, ContentProviderRecord> map = mProvidersByClassPerUser.get(userId); |
| if (map == null) { |
| HashMap<ComponentName, ContentProviderRecord> newMap = new HashMap<ComponentName, ContentProviderRecord>(); |
| mProvidersByClassPerUser.put(userId, newMap); |
| return newMap; |
| } else { |
| return map; |
| } |
| } |
| |
| private void dumpProvidersByClassLocked(PrintWriter pw, boolean dumpAll, |
| HashMap<ComponentName, ContentProviderRecord> map) { |
| Iterator<Map.Entry<ComponentName, ContentProviderRecord>> it = map.entrySet().iterator(); |
| while (it.hasNext()) { |
| Map.Entry<ComponentName, ContentProviderRecord> e = it.next(); |
| ContentProviderRecord r = e.getValue(); |
| pw.print(" * "); |
| pw.println(r); |
| r.dump(pw, " ", dumpAll); |
| } |
| } |
| |
| private void dumpProvidersByNameLocked(PrintWriter pw, |
| HashMap<String, ContentProviderRecord> map) { |
| Iterator<Map.Entry<String, ContentProviderRecord>> it = map.entrySet().iterator(); |
| while (it.hasNext()) { |
| Map.Entry<String, ContentProviderRecord> e = it.next(); |
| ContentProviderRecord r = e.getValue(); |
| pw.print(" "); |
| pw.print(e.getKey()); |
| pw.print(": "); |
| pw.println(r.toShortString()); |
| } |
| } |
| |
| void dumpProvidersLocked(PrintWriter pw, boolean dumpAll) { |
| boolean needSep = false; |
| if (mGlobalByClass.size() > 0) { |
| if (needSep) |
| pw.println(" "); |
| pw.println(" Published content providers (by class):"); |
| dumpProvidersByClassLocked(pw, dumpAll, mGlobalByClass); |
| } |
| |
| if (mProvidersByClassPerUser.size() > 1) { |
| pw.println(""); |
| for (int i = 0; i < mProvidersByClassPerUser.size(); i++) { |
| HashMap<ComponentName, ContentProviderRecord> map = mProvidersByClassPerUser.valueAt(i); |
| pw.println(" User " + mProvidersByClassPerUser.keyAt(i) + ":"); |
| dumpProvidersByClassLocked(pw, dumpAll, map); |
| pw.println(" "); |
| } |
| } else if (mProvidersByClassPerUser.size() == 1) { |
| HashMap<ComponentName, ContentProviderRecord> map = mProvidersByClassPerUser.valueAt(0); |
| dumpProvidersByClassLocked(pw, dumpAll, map); |
| } |
| needSep = true; |
| |
| if (dumpAll) { |
| pw.println(" "); |
| pw.println(" Authority to provider mappings:"); |
| dumpProvidersByNameLocked(pw, mGlobalByName); |
| |
| for (int i = 0; i < mProvidersByNamePerUser.size(); i++) { |
| if (i > 0) { |
| pw.println(" User " + mProvidersByNamePerUser.keyAt(i) + ":"); |
| } |
| dumpProvidersByNameLocked(pw, mProvidersByNamePerUser.valueAt(i)); |
| } |
| } |
| } |
| |
| protected boolean dumpProvider(FileDescriptor fd, PrintWriter pw, String name, String[] args, |
| int opti, boolean dumpAll) { |
| ArrayList<ContentProviderRecord> providers = new ArrayList<ContentProviderRecord>(); |
| |
| if ("all".equals(name)) { |
| synchronized (this) { |
| for (ContentProviderRecord r1 : getProvidersByClass(-1).values()) { |
| providers.add(r1); |
| } |
| } |
| } else { |
| ComponentName componentName = name != null |
| ? ComponentName.unflattenFromString(name) : null; |
| int objectId = 0; |
| if (componentName == null) { |
| // Not a '/' separated full component name; maybe an object ID? |
| try { |
| objectId = Integer.parseInt(name, 16); |
| name = null; |
| componentName = null; |
| } catch (RuntimeException e) { |
| } |
| } |
| |
| synchronized (this) { |
| for (ContentProviderRecord r1 : getProvidersByClass(-1).values()) { |
| if (componentName != null) { |
| if (r1.name.equals(componentName)) { |
| providers.add(r1); |
| } |
| } else if (name != null) { |
| if (r1.name.flattenToString().contains(name)) { |
| providers.add(r1); |
| } |
| } else if (System.identityHashCode(r1) == objectId) { |
| providers.add(r1); |
| } |
| } |
| } |
| } |
| |
| if (providers.size() <= 0) { |
| return false; |
| } |
| |
| boolean needSep = false; |
| for (int i=0; i<providers.size(); i++) { |
| if (needSep) { |
| pw.println(); |
| } |
| needSep = true; |
| dumpProvider("", fd, pw, providers.get(i), args, dumpAll); |
| } |
| return true; |
| } |
| |
| /** |
| * Invokes IApplicationThread.dumpProvider() on the thread of the specified provider if |
| * there is a thread associated with the provider. |
| */ |
| private void dumpProvider(String prefix, FileDescriptor fd, PrintWriter pw, |
| final ContentProviderRecord r, String[] args, boolean dumpAll) { |
| String innerPrefix = prefix + " "; |
| synchronized (this) { |
| pw.print(prefix); pw.print("PROVIDER "); |
| pw.print(r); |
| pw.print(" pid="); |
| if (r.proc != null) pw.println(r.proc.pid); |
| else pw.println("(not running)"); |
| if (dumpAll) { |
| r.dump(pw, innerPrefix, true); |
| } |
| } |
| if (r.proc != null && r.proc.thread != null) { |
| pw.println(" Client:"); |
| pw.flush(); |
| try { |
| TransferPipe tp = new TransferPipe(); |
| try { |
| r.proc.thread.dumpProvider( |
| tp.getWriteFd().getFileDescriptor(), r.provider.asBinder(), args); |
| tp.setBufferPrefix(" "); |
| // Short timeout, since blocking here can |
| // deadlock with the application. |
| tp.go(fd, 2000); |
| } finally { |
| tp.kill(); |
| } |
| } catch (IOException ex) { |
| pw.println(" Failure while dumping the provider: " + ex); |
| } catch (RemoteException ex) { |
| pw.println(" Got a RemoteException while dumping the service"); |
| } |
| } |
| } |
| |
| |
| } |