DefaultContainerService.java revision aa183e2c9a279cb6aef7dc77855facfae795b6f8
1/* 2 * Copyright (C) 2010 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 17package com.android.defcontainer; 18 19import com.android.internal.app.IMediaContainerService; 20import com.android.internal.content.NativeLibraryHelper; 21import com.android.internal.content.PackageHelper; 22 23import android.content.Intent; 24import android.content.pm.IPackageManager; 25import android.content.pm.PackageInfo; 26import android.content.pm.PackageInfoLite; 27import android.content.pm.PackageManager; 28import android.content.pm.PackageParser; 29import android.content.res.ObbInfo; 30import android.content.res.ObbScanner; 31import android.net.Uri; 32import android.os.Environment; 33import android.os.IBinder; 34import android.os.ParcelFileDescriptor; 35import android.os.Process; 36import android.os.RemoteException; 37import android.os.ServiceManager; 38import android.os.StatFs; 39import android.app.IntentService; 40import android.util.DisplayMetrics; 41import android.util.Log; 42import android.util.Pair; 43 44import java.io.File; 45import java.io.FileInputStream; 46import java.io.FileNotFoundException; 47import java.io.FileOutputStream; 48import java.io.IOException; 49import java.io.InputStream; 50import java.util.LinkedList; 51import java.util.List; 52import java.util.zip.ZipEntry; 53import java.util.zip.ZipException; 54import java.util.zip.ZipFile; 55 56import android.os.FileUtils; 57import android.provider.Settings; 58 59/* 60 * This service copies a downloaded apk to a file passed in as 61 * a ParcelFileDescriptor or to a newly created container specified 62 * by parameters. The DownloadManager gives access to this process 63 * based on its uid. This process also needs the ACCESS_DOWNLOAD_MANAGER 64 * permission to access apks downloaded via the download manager. 65 */ 66public class DefaultContainerService extends IntentService { 67 private static final String TAG = "DefContainer"; 68 private static final boolean localLOGV = true; 69 70 private static final String LIB_DIR_NAME = "lib"; 71 72 private IMediaContainerService.Stub mBinder = new IMediaContainerService.Stub() { 73 /* 74 * Creates a new container and copies resource there. 75 * @param paackageURI the uri of resource to be copied. Can be either 76 * a content uri or a file uri 77 * @param cid the id of the secure container that should 78 * be used for creating a secure container into which the resource 79 * will be copied. 80 * @param key Refers to key used for encrypting the secure container 81 * @param resFileName Name of the target resource file(relative to newly 82 * created secure container) 83 * @return Returns the new cache path where the resource has been copied into 84 * 85 */ 86 public String copyResourceToContainer(final Uri packageURI, 87 final String cid, 88 final String key, final String resFileName) { 89 if (packageURI == null || cid == null) { 90 return null; 91 } 92 return copyResourceInner(packageURI, cid, key, resFileName); 93 } 94 95 /* 96 * Copy specified resource to output stream 97 * @param packageURI the uri of resource to be copied. Should be a 98 * file uri 99 * @param outStream Remote file descriptor to be used for copying 100 * @return Returns true if copy succeded or false otherwise. 101 */ 102 public boolean copyResource(final Uri packageURI, 103 ParcelFileDescriptor outStream) { 104 if (packageURI == null || outStream == null) { 105 return false; 106 } 107 ParcelFileDescriptor.AutoCloseOutputStream 108 autoOut = new ParcelFileDescriptor.AutoCloseOutputStream(outStream); 109 return copyFile(packageURI, autoOut); 110 } 111 112 /* 113 * Determine the recommended install location for package 114 * specified by file uri location. 115 * @param fileUri the uri of resource to be copied. Should be a 116 * file uri 117 * @return Returns PackageInfoLite object containing 118 * the package info and recommended app location. 119 */ 120 public PackageInfoLite getMinimalPackageInfo(final Uri fileUri, int flags) { 121 PackageInfoLite ret = new PackageInfoLite(); 122 if (fileUri == null) { 123 Log.i(TAG, "Invalid package uri " + fileUri); 124 ret.recommendedInstallLocation = PackageHelper.RECOMMEND_FAILED_INVALID_APK; 125 return ret; 126 } 127 String scheme = fileUri.getScheme(); 128 if (scheme != null && !scheme.equals("file")) { 129 Log.w(TAG, "Falling back to installing on internal storage only"); 130 ret.recommendedInstallLocation = PackageHelper.RECOMMEND_INSTALL_INTERNAL; 131 return ret; 132 } 133 String archiveFilePath = fileUri.getPath(); 134 PackageParser packageParser = new PackageParser(archiveFilePath); 135 File sourceFile = new File(archiveFilePath); 136 DisplayMetrics metrics = new DisplayMetrics(); 137 metrics.setToDefaults(); 138 PackageParser.PackageLite pkg = packageParser.parsePackageLite( 139 archiveFilePath, 0); 140 // Nuke the parser reference right away and force a gc 141 packageParser = null; 142 Runtime.getRuntime().gc(); 143 if (pkg == null) { 144 Log.w(TAG, "Failed to parse package"); 145 ret.recommendedInstallLocation = PackageHelper.RECOMMEND_FAILED_INVALID_APK; 146 return ret; 147 } 148 ret.packageName = pkg.packageName; 149 ret.installLocation = pkg.installLocation; 150 ret.recommendedInstallLocation = recommendAppInstallLocation(pkg.installLocation, archiveFilePath, flags); 151 return ret; 152 } 153 154 public boolean checkFreeStorage(boolean external, Uri fileUri) { 155 return checkFreeStorageInner(external, fileUri); 156 } 157 158 public ObbInfo getObbInfo(String filename) { 159 try { 160 return ObbScanner.getObbInfo(filename); 161 } catch (IOException e) { 162 Log.d(TAG, "Couldn't get OBB info for " + filename); 163 return null; 164 } 165 } 166 167 @Override 168 public long calculateDirectorySize(String directory) throws RemoteException { 169 return MeasurementUtils.measureDirectory(directory); 170 } 171 }; 172 173 public DefaultContainerService() { 174 super("DefaultContainerService"); 175 setIntentRedelivery(true); 176 } 177 178 @Override 179 protected void onHandleIntent(Intent intent) { 180 if (PackageManager.ACTION_CLEAN_EXTERNAL_STORAGE.equals(intent.getAction())) { 181 IPackageManager pm = IPackageManager.Stub.asInterface( 182 ServiceManager.getService("package")); 183 String pkg = null; 184 try { 185 while ((pkg=pm.nextPackageToClean(pkg)) != null) { 186 eraseFiles(Environment.getExternalStorageAppDataDirectory(pkg)); 187 eraseFiles(Environment.getExternalStorageAppMediaDirectory(pkg)); 188 } 189 } catch (RemoteException e) { 190 } 191 } 192 } 193 194 void eraseFiles(File path) { 195 if (path.isDirectory()) { 196 String[] files = path.list(); 197 if (files != null) { 198 for (String file : files) { 199 eraseFiles(new File(path, file)); 200 } 201 } 202 } 203 path.delete(); 204 } 205 206 public IBinder onBind(Intent intent) { 207 return mBinder; 208 } 209 210 private String copyResourceInner(Uri packageURI, String newCid, String key, String resFileName) { 211 // Make sure the sdcard is mounted. 212 String status = Environment.getExternalStorageState(); 213 if (!status.equals(Environment.MEDIA_MOUNTED)) { 214 Log.w(TAG, "Make sure sdcard is mounted."); 215 return null; 216 } 217 218 // The .apk file 219 String codePath = packageURI.getPath(); 220 File codeFile = new File(codePath); 221 222 // Calculate size of container needed to hold base APK. 223 long sizeBytes = codeFile.length(); 224 225 // Check all the native files that need to be copied and add that to the container size. 226 ZipFile zipFile; 227 List<Pair<ZipEntry, String>> nativeFiles; 228 try { 229 zipFile = new ZipFile(codeFile); 230 231 nativeFiles = new LinkedList<Pair<ZipEntry, String>>(); 232 233 NativeLibraryHelper.listPackageNativeBinariesLI(zipFile, nativeFiles); 234 235 final int N = nativeFiles.size(); 236 for (int i = 0; i < N; i++) { 237 final Pair<ZipEntry, String> entry = nativeFiles.get(i); 238 239 /* 240 * Note that PackageHelper.createSdDir adds a 1MB padding on 241 * our claimed size, so we don't have to worry about block 242 * alignment here. 243 */ 244 sizeBytes += entry.first.getSize(); 245 } 246 } catch (ZipException e) { 247 Log.w(TAG, "Failed to extract data from package file", e); 248 return null; 249 } catch (IOException e) { 250 Log.w(TAG, "Failed to cache package shared libs", e); 251 return null; 252 } 253 254 // Create new container 255 String newCachePath = null; 256 if ((newCachePath = PackageHelper.createSdDir(sizeBytes, newCid, key, Process.myUid())) == null) { 257 Log.e(TAG, "Failed to create container " + newCid); 258 return null; 259 } 260 if (localLOGV) 261 Log.i(TAG, "Created container for " + newCid + " at path : " + newCachePath); 262 File resFile = new File(newCachePath, resFileName); 263 if (!FileUtils.copyFile(new File(codePath), resFile)) { 264 Log.e(TAG, "Failed to copy " + codePath + " to " + resFile); 265 // Clean up container 266 PackageHelper.destroySdDir(newCid); 267 return null; 268 } 269 270 try { 271 File sharedLibraryDir = new File(newCachePath, LIB_DIR_NAME); 272 sharedLibraryDir.mkdir(); 273 274 final int N = nativeFiles.size(); 275 for (int i = 0; i < N; i++) { 276 final Pair<ZipEntry, String> entry = nativeFiles.get(i); 277 278 InputStream is = zipFile.getInputStream(entry.first); 279 try { 280 File destFile = new File(sharedLibraryDir, entry.second); 281 if (!FileUtils.copyToFile(is, destFile)) { 282 throw new IOException("Couldn't copy native binary " 283 + entry.first.getName() + " to " + entry.second); 284 } 285 } finally { 286 is.close(); 287 } 288 } 289 } catch (IOException e) { 290 Log.e(TAG, "Couldn't copy native file to container", e); 291 PackageHelper.destroySdDir(newCid); 292 return null; 293 } 294 295 if (localLOGV) Log.i(TAG, "Copied " + codePath + " to " + resFile); 296 if (!PackageHelper.finalizeSdDir(newCid)) { 297 Log.e(TAG, "Failed to finalize " + newCid + " at path " + newCachePath); 298 // Clean up container 299 PackageHelper.destroySdDir(newCid); 300 } 301 if (localLOGV) Log.i(TAG, "Finalized container " + newCid); 302 if (PackageHelper.isContainerMounted(newCid)) { 303 if (localLOGV) Log.i(TAG, "Unmounting " + newCid + 304 " at path " + newCachePath); 305 // Force a gc to avoid being killed. 306 Runtime.getRuntime().gc(); 307 PackageHelper.unMountSdDir(newCid); 308 } else { 309 if (localLOGV) Log.i(TAG, "Container " + newCid + " not mounted"); 310 } 311 return newCachePath; 312 } 313 314 public static boolean copyToFile(InputStream inputStream, FileOutputStream out) { 315 try { 316 byte[] buffer = new byte[4096]; 317 int bytesRead; 318 while ((bytesRead = inputStream.read(buffer)) >= 0) { 319 out.write(buffer, 0, bytesRead); 320 } 321 return true; 322 } catch (IOException e) { 323 Log.i(TAG, "Exception : " + e + " when copying file"); 324 return false; 325 } 326 } 327 328 public static boolean copyToFile(File srcFile, FileOutputStream out) { 329 InputStream inputStream = null; 330 try { 331 inputStream = new FileInputStream(srcFile); 332 return copyToFile(inputStream, out); 333 } catch (IOException e) { 334 return false; 335 } finally { 336 try { if (inputStream != null) inputStream.close(); } catch (IOException e) {} 337 } 338 } 339 340 private boolean copyFile(Uri pPackageURI, FileOutputStream outStream) { 341 String scheme = pPackageURI.getScheme(); 342 if (scheme == null || scheme.equals("file")) { 343 final File srcPackageFile = new File(pPackageURI.getPath()); 344 // We copy the source package file to a temp file and then rename it to the 345 // destination file in order to eliminate a window where the package directory 346 // scanner notices the new package file but it's not completely copied yet. 347 if (!copyToFile(srcPackageFile, outStream)) { 348 Log.e(TAG, "Couldn't copy file: " + srcPackageFile); 349 return false; 350 } 351 } else if (scheme.equals("content")) { 352 ParcelFileDescriptor fd = null; 353 try { 354 fd = getContentResolver().openFileDescriptor(pPackageURI, "r"); 355 } catch (FileNotFoundException e) { 356 Log.e(TAG, "Couldn't open file descriptor from download service. Failed with exception " + e); 357 return false; 358 } 359 if (fd == null) { 360 Log.e(TAG, "Couldn't open file descriptor from download service (null)."); 361 return false; 362 } else { 363 if (localLOGV) { 364 Log.v(TAG, "Opened file descriptor from download service."); 365 } 366 ParcelFileDescriptor.AutoCloseInputStream 367 dlStream = new ParcelFileDescriptor.AutoCloseInputStream(fd); 368 // We copy the source package file to a temp file and then rename it to the 369 // destination file in order to eliminate a window where the package directory 370 // scanner notices the new package file but it's not completely copied yet. 371 if (!copyToFile(dlStream, outStream)) { 372 Log.e(TAG, "Couldn't copy " + pPackageURI + " to temp file."); 373 return false; 374 } 375 } 376 } else { 377 Log.e(TAG, "Package URI is not 'file:' or 'content:' - " + pPackageURI); 378 return false; 379 } 380 return true; 381 } 382 383 // Constants related to app heuristics 384 // No-installation limit for internal flash: 10% or less space available 385 private static final double LOW_NAND_FLASH_TRESHOLD = 0.1; 386 387 // SD-to-internal app size threshold: currently set to 1 MB 388 private static final long INSTALL_ON_SD_THRESHOLD = (1024 * 1024); 389 private static final int ERR_LOC = -1; 390 391 private int recommendAppInstallLocation(int installLocation, 392 String archiveFilePath, int flags) { 393 boolean checkInt = false; 394 boolean checkExt = false; 395 boolean checkBoth = false; 396 check_inner : { 397 // Check flags. 398 if ((flags & PackageManager.INSTALL_FORWARD_LOCK) != 0) { 399 // Check for forward locked app 400 checkInt = true; 401 break check_inner; 402 } else if ((flags & PackageManager.INSTALL_INTERNAL) != 0) { 403 // Explicit flag to install internally. 404 // Check internal storage and return 405 checkInt = true; 406 break check_inner; 407 } else if ((flags & PackageManager.INSTALL_EXTERNAL) != 0) { 408 // Explicit flag to install externally. 409 // Check external storage and return 410 checkExt = true; 411 break check_inner; 412 } 413 // Check for manifest option 414 if (installLocation == PackageInfo.INSTALL_LOCATION_INTERNAL_ONLY) { 415 checkInt = true; 416 break check_inner; 417 } else if (installLocation == PackageInfo.INSTALL_LOCATION_PREFER_EXTERNAL) { 418 checkExt = true; 419 checkBoth = true; 420 break check_inner; 421 } else if (installLocation == PackageInfo.INSTALL_LOCATION_AUTO) { 422 checkInt = true; 423 checkBoth = true; 424 break check_inner; 425 } 426 // Pick user preference 427 int installPreference = Settings.System.getInt(getApplicationContext() 428 .getContentResolver(), 429 Settings.Secure.DEFAULT_INSTALL_LOCATION, 430 PackageHelper.APP_INSTALL_AUTO); 431 if (installPreference == PackageHelper.APP_INSTALL_INTERNAL) { 432 checkInt = true; 433 break check_inner; 434 } else if (installPreference == PackageHelper.APP_INSTALL_EXTERNAL) { 435 checkExt = true; 436 break check_inner; 437 } 438 // Fall back to default policy if nothing else is specified. 439 checkInt = true; 440 } 441 442 // Package size = code size + cache size + data size 443 // If code size > 1 MB, install on SD card. 444 // Else install on internal NAND flash, unless space on NAND is less than 10% 445 String status = Environment.getExternalStorageState(); 446 long availSDSize = -1; 447 boolean mediaAvailable = false; 448 if (!Environment.isExternalStorageEmulated() && status.equals(Environment.MEDIA_MOUNTED)) { 449 StatFs sdStats = new StatFs( 450 Environment.getExternalStorageDirectory().getPath()); 451 availSDSize = (long)sdStats.getAvailableBlocks() * 452 (long)sdStats.getBlockSize(); 453 mediaAvailable = true; 454 } 455 StatFs internalStats = new StatFs(Environment.getDataDirectory().getPath()); 456 long totalInternalSize = (long)internalStats.getBlockCount() * 457 (long)internalStats.getBlockSize(); 458 long availInternalSize = (long)internalStats.getAvailableBlocks() * 459 (long)internalStats.getBlockSize(); 460 461 double pctNandFree = (double)availInternalSize / (double)totalInternalSize; 462 463 File apkFile = new File(archiveFilePath); 464 long pkgLen = apkFile.length(); 465 466 // To make final copy 467 long reqInstallSize = pkgLen; 468 // For dex files. Just ignore and fail when extracting. Max limit of 2Gig for now. 469 long reqInternalSize = 0; 470 boolean intThresholdOk = (pctNandFree >= LOW_NAND_FLASH_TRESHOLD); 471 boolean intAvailOk = ((reqInstallSize + reqInternalSize) < availInternalSize); 472 boolean fitsOnSd = false; 473 if (mediaAvailable && (reqInstallSize < availSDSize)) { 474 // If we do not have an internal size requirement 475 // don't do a threshold check. 476 if (reqInternalSize == 0) { 477 fitsOnSd = true; 478 } else if ((reqInternalSize < availInternalSize) && intThresholdOk) { 479 fitsOnSd = true; 480 } 481 } 482 boolean fitsOnInt = intThresholdOk && intAvailOk; 483 if (checkInt) { 484 // Check for internal memory availability 485 if (fitsOnInt) { 486 return PackageHelper.RECOMMEND_INSTALL_INTERNAL; 487 } 488 } else if (checkExt) { 489 if (fitsOnSd) { 490 return PackageHelper.RECOMMEND_INSTALL_EXTERNAL; 491 } 492 } 493 if (checkBoth) { 494 // Check for internal first 495 if (fitsOnInt) { 496 return PackageHelper.RECOMMEND_INSTALL_INTERNAL; 497 } 498 // Check for external next 499 if (fitsOnSd) { 500 return PackageHelper.RECOMMEND_INSTALL_EXTERNAL; 501 } 502 } 503 if ((checkExt || checkBoth) && !mediaAvailable) { 504 return PackageHelper.RECOMMEND_MEDIA_UNAVAILABLE; 505 } 506 return PackageHelper.RECOMMEND_FAILED_INSUFFICIENT_STORAGE; 507 } 508 509 private boolean checkFreeStorageInner(boolean external, Uri packageURI) { 510 File apkFile = new File(packageURI.getPath()); 511 long size = apkFile.length(); 512 if (external) { 513 String status = Environment.getExternalStorageState(); 514 long availSDSize = -1; 515 if (status.equals(Environment.MEDIA_MOUNTED)) { 516 StatFs sdStats = new StatFs( 517 Environment.getExternalStorageDirectory().getPath()); 518 availSDSize = (long)sdStats.getAvailableBlocks() * 519 (long)sdStats.getBlockSize(); 520 } 521 return availSDSize > size; 522 } 523 StatFs internalStats = new StatFs(Environment.getDataDirectory().getPath()); 524 long totalInternalSize = (long)internalStats.getBlockCount() * 525 (long)internalStats.getBlockSize(); 526 long availInternalSize = (long)internalStats.getAvailableBlocks() * 527 (long)internalStats.getBlockSize(); 528 529 double pctNandFree = (double)availInternalSize / (double)totalInternalSize; 530 // To make final copy 531 long reqInstallSize = size; 532 // For dex files. Just ignore and fail when extracting. Max limit of 2Gig for now. 533 long reqInternalSize = 0; 534 boolean intThresholdOk = (pctNandFree >= LOW_NAND_FLASH_TRESHOLD); 535 boolean intAvailOk = ((reqInstallSize + reqInternalSize) < availInternalSize); 536 return intThresholdOk && intAvailOk; 537 } 538} 539