DefaultContainerService.java revision 366949c2d934435ff9ef8082408ca36ff14a2241
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 path) throws RemoteException { 169 final File directory = new File(path); 170 if (directory.exists() && directory.isDirectory()) { 171 return MeasurementUtils.measureDirectory(path); 172 } else { 173 return 0L; 174 } 175 } 176 }; 177 178 public DefaultContainerService() { 179 super("DefaultContainerService"); 180 setIntentRedelivery(true); 181 } 182 183 @Override 184 protected void onHandleIntent(Intent intent) { 185 if (PackageManager.ACTION_CLEAN_EXTERNAL_STORAGE.equals(intent.getAction())) { 186 IPackageManager pm = IPackageManager.Stub.asInterface( 187 ServiceManager.getService("package")); 188 String pkg = null; 189 try { 190 while ((pkg=pm.nextPackageToClean(pkg)) != null) { 191 eraseFiles(Environment.getExternalStorageAppDataDirectory(pkg)); 192 eraseFiles(Environment.getExternalStorageAppMediaDirectory(pkg)); 193 } 194 } catch (RemoteException e) { 195 } 196 } 197 } 198 199 void eraseFiles(File path) { 200 if (path.isDirectory()) { 201 String[] files = path.list(); 202 if (files != null) { 203 for (String file : files) { 204 eraseFiles(new File(path, file)); 205 } 206 } 207 } 208 path.delete(); 209 } 210 211 public IBinder onBind(Intent intent) { 212 return mBinder; 213 } 214 215 private String copyResourceInner(Uri packageURI, String newCid, String key, String resFileName) { 216 // Make sure the sdcard is mounted. 217 String status = Environment.getExternalStorageState(); 218 if (!status.equals(Environment.MEDIA_MOUNTED)) { 219 Log.w(TAG, "Make sure sdcard is mounted."); 220 return null; 221 } 222 223 // The .apk file 224 String codePath = packageURI.getPath(); 225 File codeFile = new File(codePath); 226 227 // Calculate size of container needed to hold base APK. 228 long sizeBytes = codeFile.length(); 229 230 // Check all the native files that need to be copied and add that to the container size. 231 ZipFile zipFile; 232 List<Pair<ZipEntry, String>> nativeFiles; 233 try { 234 zipFile = new ZipFile(codeFile); 235 236 nativeFiles = new LinkedList<Pair<ZipEntry, String>>(); 237 238 NativeLibraryHelper.listPackageNativeBinariesLI(zipFile, nativeFiles); 239 240 final int N = nativeFiles.size(); 241 for (int i = 0; i < N; i++) { 242 final Pair<ZipEntry, String> entry = nativeFiles.get(i); 243 244 /* 245 * Note that PackageHelper.createSdDir adds a 1MB padding on 246 * our claimed size, so we don't have to worry about block 247 * alignment here. 248 */ 249 sizeBytes += entry.first.getSize(); 250 } 251 } catch (ZipException e) { 252 Log.w(TAG, "Failed to extract data from package file", e); 253 return null; 254 } catch (IOException e) { 255 Log.w(TAG, "Failed to cache package shared libs", e); 256 return null; 257 } 258 259 // Create new container 260 String newCachePath = null; 261 if ((newCachePath = PackageHelper.createSdDir(sizeBytes, newCid, key, Process.myUid())) == null) { 262 Log.e(TAG, "Failed to create container " + newCid); 263 return null; 264 } 265 if (localLOGV) 266 Log.i(TAG, "Created container for " + newCid + " at path : " + newCachePath); 267 File resFile = new File(newCachePath, resFileName); 268 if (!FileUtils.copyFile(new File(codePath), resFile)) { 269 Log.e(TAG, "Failed to copy " + codePath + " to " + resFile); 270 // Clean up container 271 PackageHelper.destroySdDir(newCid); 272 return null; 273 } 274 275 try { 276 File sharedLibraryDir = new File(newCachePath, LIB_DIR_NAME); 277 sharedLibraryDir.mkdir(); 278 279 final int N = nativeFiles.size(); 280 for (int i = 0; i < N; i++) { 281 final Pair<ZipEntry, String> entry = nativeFiles.get(i); 282 283 InputStream is = zipFile.getInputStream(entry.first); 284 try { 285 File destFile = new File(sharedLibraryDir, entry.second); 286 if (!FileUtils.copyToFile(is, destFile)) { 287 throw new IOException("Couldn't copy native binary " 288 + entry.first.getName() + " to " + entry.second); 289 } 290 } finally { 291 is.close(); 292 } 293 } 294 } catch (IOException e) { 295 Log.e(TAG, "Couldn't copy native file to container", e); 296 PackageHelper.destroySdDir(newCid); 297 return null; 298 } 299 300 if (localLOGV) Log.i(TAG, "Copied " + codePath + " to " + resFile); 301 if (!PackageHelper.finalizeSdDir(newCid)) { 302 Log.e(TAG, "Failed to finalize " + newCid + " at path " + newCachePath); 303 // Clean up container 304 PackageHelper.destroySdDir(newCid); 305 } 306 if (localLOGV) Log.i(TAG, "Finalized container " + newCid); 307 if (PackageHelper.isContainerMounted(newCid)) { 308 if (localLOGV) Log.i(TAG, "Unmounting " + newCid + 309 " at path " + newCachePath); 310 // Force a gc to avoid being killed. 311 Runtime.getRuntime().gc(); 312 PackageHelper.unMountSdDir(newCid); 313 } else { 314 if (localLOGV) Log.i(TAG, "Container " + newCid + " not mounted"); 315 } 316 return newCachePath; 317 } 318 319 public static boolean copyToFile(InputStream inputStream, FileOutputStream out) { 320 try { 321 byte[] buffer = new byte[4096]; 322 int bytesRead; 323 while ((bytesRead = inputStream.read(buffer)) >= 0) { 324 out.write(buffer, 0, bytesRead); 325 } 326 return true; 327 } catch (IOException e) { 328 Log.i(TAG, "Exception : " + e + " when copying file"); 329 return false; 330 } 331 } 332 333 public static boolean copyToFile(File srcFile, FileOutputStream out) { 334 InputStream inputStream = null; 335 try { 336 inputStream = new FileInputStream(srcFile); 337 return copyToFile(inputStream, out); 338 } catch (IOException e) { 339 return false; 340 } finally { 341 try { if (inputStream != null) inputStream.close(); } catch (IOException e) {} 342 } 343 } 344 345 private boolean copyFile(Uri pPackageURI, FileOutputStream outStream) { 346 String scheme = pPackageURI.getScheme(); 347 if (scheme == null || scheme.equals("file")) { 348 final File srcPackageFile = new File(pPackageURI.getPath()); 349 // We copy the source package file to a temp file and then rename it to the 350 // destination file in order to eliminate a window where the package directory 351 // scanner notices the new package file but it's not completely copied yet. 352 if (!copyToFile(srcPackageFile, outStream)) { 353 Log.e(TAG, "Couldn't copy file: " + srcPackageFile); 354 return false; 355 } 356 } else if (scheme.equals("content")) { 357 ParcelFileDescriptor fd = null; 358 try { 359 fd = getContentResolver().openFileDescriptor(pPackageURI, "r"); 360 } catch (FileNotFoundException e) { 361 Log.e(TAG, "Couldn't open file descriptor from download service. Failed with exception " + e); 362 return false; 363 } 364 if (fd == null) { 365 Log.e(TAG, "Couldn't open file descriptor from download service (null)."); 366 return false; 367 } else { 368 if (localLOGV) { 369 Log.v(TAG, "Opened file descriptor from download service."); 370 } 371 ParcelFileDescriptor.AutoCloseInputStream 372 dlStream = new ParcelFileDescriptor.AutoCloseInputStream(fd); 373 // We copy the source package file to a temp file and then rename it to the 374 // destination file in order to eliminate a window where the package directory 375 // scanner notices the new package file but it's not completely copied yet. 376 if (!copyToFile(dlStream, outStream)) { 377 Log.e(TAG, "Couldn't copy " + pPackageURI + " to temp file."); 378 return false; 379 } 380 } 381 } else { 382 Log.e(TAG, "Package URI is not 'file:' or 'content:' - " + pPackageURI); 383 return false; 384 } 385 return true; 386 } 387 388 // Constants related to app heuristics 389 // No-installation limit for internal flash: 10% or less space available 390 private static final double LOW_NAND_FLASH_TRESHOLD = 0.1; 391 392 // SD-to-internal app size threshold: currently set to 1 MB 393 private static final long INSTALL_ON_SD_THRESHOLD = (1024 * 1024); 394 private static final int ERR_LOC = -1; 395 396 private int recommendAppInstallLocation(int installLocation, 397 String archiveFilePath, int flags) { 398 boolean checkInt = false; 399 boolean checkExt = false; 400 boolean checkBoth = false; 401 check_inner : { 402 // Check flags. 403 if ((flags & PackageManager.INSTALL_FORWARD_LOCK) != 0) { 404 // Check for forward locked app 405 checkInt = true; 406 break check_inner; 407 } else if ((flags & PackageManager.INSTALL_INTERNAL) != 0) { 408 // Explicit flag to install internally. 409 // Check internal storage and return 410 checkInt = true; 411 break check_inner; 412 } else if ((flags & PackageManager.INSTALL_EXTERNAL) != 0) { 413 // Explicit flag to install externally. 414 // Check external storage and return 415 checkExt = true; 416 break check_inner; 417 } 418 // Check for manifest option 419 if (installLocation == PackageInfo.INSTALL_LOCATION_INTERNAL_ONLY) { 420 checkInt = true; 421 break check_inner; 422 } else if (installLocation == PackageInfo.INSTALL_LOCATION_PREFER_EXTERNAL) { 423 checkExt = true; 424 checkBoth = true; 425 break check_inner; 426 } else if (installLocation == PackageInfo.INSTALL_LOCATION_AUTO) { 427 checkInt = true; 428 checkBoth = true; 429 break check_inner; 430 } 431 // Pick user preference 432 int installPreference = Settings.System.getInt(getApplicationContext() 433 .getContentResolver(), 434 Settings.Secure.DEFAULT_INSTALL_LOCATION, 435 PackageHelper.APP_INSTALL_AUTO); 436 if (installPreference == PackageHelper.APP_INSTALL_INTERNAL) { 437 checkInt = true; 438 break check_inner; 439 } else if (installPreference == PackageHelper.APP_INSTALL_EXTERNAL) { 440 checkExt = true; 441 break check_inner; 442 } 443 // Fall back to default policy if nothing else is specified. 444 checkInt = true; 445 } 446 447 // Package size = code size + cache size + data size 448 // If code size > 1 MB, install on SD card. 449 // Else install on internal NAND flash, unless space on NAND is less than 10% 450 String status = Environment.getExternalStorageState(); 451 long availSDSize = -1; 452 boolean mediaAvailable = false; 453 if (!Environment.isExternalStorageEmulated() && status.equals(Environment.MEDIA_MOUNTED)) { 454 StatFs sdStats = new StatFs( 455 Environment.getExternalStorageDirectory().getPath()); 456 availSDSize = (long)sdStats.getAvailableBlocks() * 457 (long)sdStats.getBlockSize(); 458 mediaAvailable = true; 459 } 460 StatFs internalStats = new StatFs(Environment.getDataDirectory().getPath()); 461 long totalInternalSize = (long)internalStats.getBlockCount() * 462 (long)internalStats.getBlockSize(); 463 long availInternalSize = (long)internalStats.getAvailableBlocks() * 464 (long)internalStats.getBlockSize(); 465 466 double pctNandFree = (double)availInternalSize / (double)totalInternalSize; 467 468 File apkFile = new File(archiveFilePath); 469 long pkgLen = apkFile.length(); 470 471 // To make final copy 472 long reqInstallSize = pkgLen; 473 // For dex files. Just ignore and fail when extracting. Max limit of 2Gig for now. 474 long reqInternalSize = 0; 475 boolean intThresholdOk = (pctNandFree >= LOW_NAND_FLASH_TRESHOLD); 476 boolean intAvailOk = ((reqInstallSize + reqInternalSize) < availInternalSize); 477 boolean fitsOnSd = false; 478 if (mediaAvailable && (reqInstallSize < availSDSize)) { 479 // If we do not have an internal size requirement 480 // don't do a threshold check. 481 if (reqInternalSize == 0) { 482 fitsOnSd = true; 483 } else if ((reqInternalSize < availInternalSize) && intThresholdOk) { 484 fitsOnSd = true; 485 } 486 } 487 boolean fitsOnInt = intThresholdOk && intAvailOk; 488 if (checkInt) { 489 // Check for internal memory availability 490 if (fitsOnInt) { 491 return PackageHelper.RECOMMEND_INSTALL_INTERNAL; 492 } 493 } else if (checkExt) { 494 if (fitsOnSd) { 495 return PackageHelper.RECOMMEND_INSTALL_EXTERNAL; 496 } 497 } 498 if (checkBoth) { 499 // Check for internal first 500 if (fitsOnInt) { 501 return PackageHelper.RECOMMEND_INSTALL_INTERNAL; 502 } 503 // Check for external next 504 if (fitsOnSd) { 505 return PackageHelper.RECOMMEND_INSTALL_EXTERNAL; 506 } 507 } 508 if ((checkExt || checkBoth) && !mediaAvailable) { 509 return PackageHelper.RECOMMEND_MEDIA_UNAVAILABLE; 510 } 511 return PackageHelper.RECOMMEND_FAILED_INSUFFICIENT_STORAGE; 512 } 513 514 private boolean checkFreeStorageInner(boolean external, Uri packageURI) { 515 File apkFile = new File(packageURI.getPath()); 516 long size = apkFile.length(); 517 if (external) { 518 String status = Environment.getExternalStorageState(); 519 long availSDSize = -1; 520 if (status.equals(Environment.MEDIA_MOUNTED)) { 521 StatFs sdStats = new StatFs( 522 Environment.getExternalStorageDirectory().getPath()); 523 availSDSize = (long)sdStats.getAvailableBlocks() * 524 (long)sdStats.getBlockSize(); 525 } 526 return availSDSize > size; 527 } 528 StatFs internalStats = new StatFs(Environment.getDataDirectory().getPath()); 529 long totalInternalSize = (long)internalStats.getBlockCount() * 530 (long)internalStats.getBlockSize(); 531 long availInternalSize = (long)internalStats.getAvailableBlocks() * 532 (long)internalStats.getBlockSize(); 533 534 double pctNandFree = (double)availInternalSize / (double)totalInternalSize; 535 // To make final copy 536 long reqInstallSize = size; 537 // For dex files. Just ignore and fail when extracting. Max limit of 2Gig for now. 538 long reqInternalSize = 0; 539 boolean intThresholdOk = (pctNandFree >= LOW_NAND_FLASH_TRESHOLD); 540 boolean intAvailOk = ((reqInstallSize + reqInternalSize) < availInternalSize); 541 return intThresholdOk && intAvailOk; 542 } 543} 544