Dianne Hackborn | a06de0f | 2012-12-11 16:34:47 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server; |
| 18 | |
| 19 | import java.io.File; |
| 20 | import java.io.FileDescriptor; |
| 21 | import java.io.PrintWriter; |
| 22 | import java.util.HashMap; |
| 23 | |
| 24 | import android.app.AppOpsManager; |
| 25 | import android.content.Context; |
| 26 | import android.content.pm.PackageManager; |
| 27 | import android.content.pm.PackageManager.NameNotFoundException; |
| 28 | import android.os.Binder; |
| 29 | import android.os.Environment; |
| 30 | import android.os.Process; |
| 31 | import android.os.ServiceManager; |
| 32 | import android.os.UserHandle; |
| 33 | import android.util.AtomicFile; |
| 34 | import android.util.Slog; |
| 35 | import android.util.SparseArray; |
| 36 | import android.util.TimeUtils; |
| 37 | |
| 38 | import com.android.internal.app.IAppOpsService; |
| 39 | |
| 40 | public class AppOpsService extends IAppOpsService.Stub { |
| 41 | static final String TAG = "AppOps"; |
| 42 | |
| 43 | Context mContext; |
| 44 | final AtomicFile mFile; |
| 45 | |
| 46 | final SparseArray<HashMap<String, Ops>> mUidOps |
| 47 | = new SparseArray<HashMap<String, Ops>>(); |
| 48 | |
| 49 | final static class Ops extends SparseArray<Op> { |
| 50 | public final String packageName; |
| 51 | |
| 52 | public Ops(String _packageName) { |
| 53 | packageName = _packageName; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | final static class Op { |
| 58 | public final int op; |
| 59 | public int duration; |
| 60 | public long time; |
| 61 | |
| 62 | public Op(int _op) { |
| 63 | op = _op; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | public AppOpsService() { |
| 68 | mFile = new AtomicFile(new File(Environment.getSecureDataDirectory(), "appops.xml")); |
| 69 | } |
| 70 | |
| 71 | public void publish(Context context) { |
| 72 | mContext = context; |
| 73 | ServiceManager.addService(Context.APP_OPS_SERVICE, asBinder()); |
| 74 | } |
| 75 | |
| 76 | public void shutdown() { |
| 77 | Slog.w(TAG, "Writing app ops before shutdown..."); |
| 78 | } |
| 79 | |
| 80 | @Override |
| 81 | public int noteOperation(int code, int uid, String packageName) { |
| 82 | uid = handleIncomingUid(uid); |
| 83 | synchronized (this) { |
| 84 | Op op = getOpLocked(code, uid, packageName); |
| 85 | if (op == null) { |
| 86 | return AppOpsManager.MODE_IGNORED; |
| 87 | } |
| 88 | if (op.duration == -1) { |
| 89 | Slog.w(TAG, "Noting op not finished: uid " + uid + " pkg " + packageName |
| 90 | + " code " + code + " time=" + op.time + " duration=" + op.duration); |
| 91 | } |
| 92 | op.time = System.currentTimeMillis(); |
| 93 | op.duration = 0; |
| 94 | } |
| 95 | return AppOpsManager.MODE_ALLOWED; |
| 96 | } |
| 97 | |
| 98 | @Override |
| 99 | public int startOperation(int code, int uid, String packageName) { |
| 100 | uid = handleIncomingUid(uid); |
| 101 | synchronized (this) { |
| 102 | Op op = getOpLocked(code, uid, packageName); |
| 103 | if (op == null) { |
| 104 | return AppOpsManager.MODE_IGNORED; |
| 105 | } |
| 106 | if (op.duration == -1) { |
| 107 | Slog.w(TAG, "Starting op not finished: uid " + uid + " pkg " + packageName |
| 108 | + " code " + code + " time=" + op.time + " duration=" + op.duration); |
| 109 | } |
| 110 | op.time = System.currentTimeMillis(); |
| 111 | op.duration = -1; |
| 112 | } |
| 113 | return AppOpsManager.MODE_ALLOWED; |
| 114 | } |
| 115 | |
| 116 | @Override |
| 117 | public void finishOperation(int code, int uid, String packageName) { |
| 118 | uid = handleIncomingUid(uid); |
| 119 | synchronized (this) { |
| 120 | Op op = getOpLocked(code, uid, packageName); |
| 121 | if (op == null) { |
| 122 | return; |
| 123 | } |
| 124 | if (op.duration != -1) { |
| 125 | Slog.w(TAG, "Ignoring finishing op not started: uid " + uid + " pkg " + packageName |
| 126 | + " code " + code + " time=" + op.time + " duration=" + op.duration); |
| 127 | return; |
| 128 | } |
| 129 | op.duration = (int)(System.currentTimeMillis() - op.time); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | @Override |
| 134 | public int noteTimedOperation(int code, int uid, String packageName, int duration) { |
| 135 | uid = handleIncomingUid(uid); |
| 136 | synchronized (this) { |
| 137 | Op op = getOpLocked(code, uid, packageName); |
| 138 | if (op == null) { |
| 139 | return AppOpsManager.MODE_IGNORED; |
| 140 | } |
| 141 | if (op.duration == -1) { |
| 142 | Slog.w(TAG, "Noting op not finished: uid " + uid + " pkg " + packageName |
| 143 | + " code " + code + " time=" + op.time + " duration=" + op.duration); |
| 144 | } |
| 145 | op.time = System.currentTimeMillis(); |
| 146 | op.duration = duration; |
| 147 | } |
| 148 | return AppOpsManager.MODE_ALLOWED; |
| 149 | } |
| 150 | |
| 151 | @Override |
| 152 | public void earlyFinishOperation(int code, int uid, String packageName) { |
| 153 | uid = handleIncomingUid(uid); |
| 154 | synchronized (this) { |
| 155 | Op op = getOpLocked(code, uid, packageName); |
| 156 | if (op == null) { |
| 157 | return; |
| 158 | } |
| 159 | if (op.duration != -1) { |
| 160 | Slog.w(TAG, "Noting timed op not finished: uid " + uid + " pkg " + packageName |
| 161 | + " code " + code + " time=" + op.time + " duration=" + op.duration); |
| 162 | } |
| 163 | int newDuration = (int)(System.currentTimeMillis() - op.time); |
| 164 | if (newDuration < op.duration) { |
| 165 | op.duration = newDuration; |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | private int handleIncomingUid(int uid) { |
| 171 | if (uid == Binder.getCallingUid()) { |
| 172 | return uid; |
| 173 | } |
| 174 | if (Binder.getCallingPid() == Process.myPid()) { |
| 175 | return uid; |
| 176 | } |
| 177 | mContext.enforcePermission(android.Manifest.permission.UPDATE_APP_OPS_STATS, |
| 178 | Binder.getCallingPid(), Binder.getCallingUid(), null); |
| 179 | return uid; |
| 180 | } |
| 181 | |
| 182 | private Op getOpLocked(int code, int uid, String packageName) { |
| 183 | HashMap<String, Ops> pkgOps = mUidOps.get(uid); |
| 184 | if (pkgOps == null) { |
| 185 | pkgOps = new HashMap<String, Ops>(); |
| 186 | mUidOps.put(uid, pkgOps); |
| 187 | } |
| 188 | Ops ops = pkgOps.get(packageName); |
| 189 | if (ops == null) { |
| 190 | // This is the first time we have seen this package name under this uid, |
| 191 | // so let's make sure it is valid. |
| 192 | // XXX for now we always allow null through until we can fix everything |
| 193 | // to provide the name. |
| 194 | if (packageName != null) { |
| 195 | final long ident = Binder.clearCallingIdentity(); |
| 196 | try { |
| 197 | int pkgUid = -1; |
| 198 | try { |
| 199 | pkgUid = mContext.getPackageManager().getPackageUid(packageName, |
| 200 | UserHandle.getUserId(uid)); |
| 201 | } catch (NameNotFoundException e) { |
| 202 | } |
| 203 | if (pkgUid != uid) { |
| 204 | // Oops! The package name is not valid for the uid they are calling |
| 205 | // under. Abort. |
| 206 | Slog.w(TAG, "Bad call: specified package " + packageName |
| 207 | + " under uid " + uid + " but it is really " + pkgUid); |
| 208 | return null; |
| 209 | } |
| 210 | } finally { |
| 211 | Binder.restoreCallingIdentity(ident); |
| 212 | } |
| 213 | } |
| 214 | ops = new Ops(packageName); |
| 215 | pkgOps.put(packageName, ops); |
| 216 | } |
| 217 | Op op = ops.get(code); |
| 218 | if (op == null) { |
| 219 | op = new Op(code); |
| 220 | ops.put(code, op); |
| 221 | } |
| 222 | return op; |
| 223 | } |
| 224 | |
| 225 | @Override |
| 226 | protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| 227 | if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) |
| 228 | != PackageManager.PERMISSION_GRANTED) { |
| 229 | pw.println("Permission Denial: can't dump ApOps service from from pid=" |
| 230 | + Binder.getCallingPid() |
| 231 | + ", uid=" + Binder.getCallingUid()); |
| 232 | return; |
| 233 | } |
| 234 | |
| 235 | synchronized (this) { |
| 236 | pw.println("Current AppOps Service state:"); |
| 237 | for (int i=0; i<mUidOps.size(); i++) { |
| 238 | pw.print(" Uid "); UserHandle.formatUid(pw, mUidOps.keyAt(i)); pw.println(":"); |
| 239 | HashMap<String, Ops> pkgOps = mUidOps.valueAt(i); |
| 240 | for (Ops ops : pkgOps.values()) { |
| 241 | pw.print(" Package "); pw.print(ops.packageName); pw.println(":"); |
| 242 | for (int j=0; j<ops.size(); j++) { |
| 243 | Op op = ops.valueAt(j); |
| 244 | pw.print(" "); pw.print(AppOpsManager.opToString(op.op)); |
| 245 | pw.print(": time="); |
| 246 | TimeUtils.formatDuration(System.currentTimeMillis()-op.time, pw); |
| 247 | pw.print(" ago"); |
| 248 | if (op.duration == -1) { |
| 249 | pw.println(" (running)"); |
| 250 | } else { |
| 251 | pw.print("; duration="); |
| 252 | TimeUtils.formatDuration(op.duration, pw); |
| 253 | pw.println(); |
| 254 | } |
| 255 | } |
| 256 | } |
| 257 | } |
| 258 | } |
| 259 | } |
| 260 | } |