| /* |
| * Copyright (C) 2010 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.defcontainer; |
| |
| import com.android.internal.app.IMediaContainerService; |
| import com.android.internal.content.PackageHelper; |
| import android.content.Intent; |
| import android.content.pm.IPackageManager; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageInfoLite; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageParser; |
| import android.content.res.ObbInfo; |
| import android.content.res.ObbScanner; |
| import android.net.Uri; |
| import android.os.Environment; |
| import android.os.IBinder; |
| import android.os.ParcelFileDescriptor; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.StatFs; |
| import android.app.IntentService; |
| import android.util.DisplayMetrics; |
| import android.util.Log; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import android.os.FileUtils; |
| import android.provider.Settings; |
| |
| /* |
| * This service copies a downloaded apk to a file passed in as |
| * a ParcelFileDescriptor or to a newly created container specified |
| * by parameters. The DownloadManager gives access to this process |
| * based on its uid. This process also needs the ACCESS_DOWNLOAD_MANAGER |
| * permission to access apks downloaded via the download manager. |
| */ |
| public class DefaultContainerService extends IntentService { |
| private static final String TAG = "DefContainer"; |
| private static final boolean localLOGV = true; |
| |
| private IMediaContainerService.Stub mBinder = new IMediaContainerService.Stub() { |
| /* |
| * Creates a new container and copies resource there. |
| * @param paackageURI the uri of resource to be copied. Can be either |
| * a content uri or a file uri |
| * @param cid the id of the secure container that should |
| * be used for creating a secure container into which the resource |
| * will be copied. |
| * @param key Refers to key used for encrypting the secure container |
| * @param resFileName Name of the target resource file(relative to newly |
| * created secure container) |
| * @return Returns the new cache path where the resource has been copied into |
| * |
| */ |
| public String copyResourceToContainer(final Uri packageURI, |
| final String cid, |
| final String key, final String resFileName) { |
| if (packageURI == null || cid == null) { |
| return null; |
| } |
| return copyResourceInner(packageURI, cid, key, resFileName); |
| } |
| |
| /* |
| * Copy specified resource to output stream |
| * @param packageURI the uri of resource to be copied. Should be a |
| * file uri |
| * @param outStream Remote file descriptor to be used for copying |
| * @return Returns true if copy succeded or false otherwise. |
| */ |
| public boolean copyResource(final Uri packageURI, |
| ParcelFileDescriptor outStream) { |
| if (packageURI == null || outStream == null) { |
| return false; |
| } |
| ParcelFileDescriptor.AutoCloseOutputStream |
| autoOut = new ParcelFileDescriptor.AutoCloseOutputStream(outStream); |
| return copyFile(packageURI, autoOut); |
| } |
| |
| /* |
| * Determine the recommended install location for package |
| * specified by file uri location. |
| * @param fileUri the uri of resource to be copied. Should be a |
| * file uri |
| * @return Returns PackageInfoLite object containing |
| * the package info and recommended app location. |
| */ |
| public PackageInfoLite getMinimalPackageInfo(final Uri fileUri, int flags) { |
| PackageInfoLite ret = new PackageInfoLite(); |
| if (fileUri == null) { |
| Log.i(TAG, "Invalid package uri " + fileUri); |
| ret.recommendedInstallLocation = PackageHelper.RECOMMEND_FAILED_INVALID_APK; |
| return ret; |
| } |
| String scheme = fileUri.getScheme(); |
| if (scheme != null && !scheme.equals("file")) { |
| Log.w(TAG, "Falling back to installing on internal storage only"); |
| ret.recommendedInstallLocation = PackageHelper.RECOMMEND_INSTALL_INTERNAL; |
| return ret; |
| } |
| String archiveFilePath = fileUri.getPath(); |
| PackageParser packageParser = new PackageParser(archiveFilePath); |
| File sourceFile = new File(archiveFilePath); |
| DisplayMetrics metrics = new DisplayMetrics(); |
| metrics.setToDefaults(); |
| PackageParser.PackageLite pkg = packageParser.parsePackageLite( |
| archiveFilePath, 0); |
| // Nuke the parser reference right away and force a gc |
| packageParser = null; |
| Runtime.getRuntime().gc(); |
| if (pkg == null) { |
| Log.w(TAG, "Failed to parse package"); |
| ret.recommendedInstallLocation = PackageHelper.RECOMMEND_FAILED_INVALID_APK; |
| return ret; |
| } |
| ret.packageName = pkg.packageName; |
| ret.installLocation = pkg.installLocation; |
| ret.recommendedInstallLocation = recommendAppInstallLocation(pkg.installLocation, archiveFilePath, flags); |
| return ret; |
| } |
| |
| public boolean checkFreeStorage(boolean external, Uri fileUri) { |
| return checkFreeStorageInner(external, fileUri); |
| } |
| |
| public ObbInfo getObbInfo(String filename) { |
| return ObbScanner.getObbInfo(filename); |
| } |
| }; |
| |
| public DefaultContainerService() { |
| super("DefaultContainerService"); |
| setIntentRedelivery(true); |
| } |
| |
| @Override |
| protected void onHandleIntent(Intent intent) { |
| if (PackageManager.ACTION_CLEAN_EXTERNAL_STORAGE.equals(intent.getAction())) { |
| IPackageManager pm = IPackageManager.Stub.asInterface( |
| ServiceManager.getService("package")); |
| String pkg = null; |
| try { |
| while ((pkg=pm.nextPackageToClean(pkg)) != null) { |
| eraseFiles(Environment.getExternalStorageAppDataDirectory(pkg)); |
| eraseFiles(Environment.getExternalStorageAppMediaDirectory(pkg)); |
| } |
| } catch (RemoteException e) { |
| } |
| } |
| } |
| |
| void eraseFiles(File path) { |
| if (path.isDirectory()) { |
| String[] files = path.list(); |
| if (files != null) { |
| for (String file : files) { |
| eraseFiles(new File(path, file)); |
| } |
| } |
| } |
| path.delete(); |
| } |
| |
| public IBinder onBind(Intent intent) { |
| return mBinder; |
| } |
| |
| private String copyResourceInner(Uri packageURI, String newCid, String key, String resFileName) { |
| // Make sure the sdcard is mounted. |
| String status = Environment.getExternalStorageState(); |
| if (!status.equals(Environment.MEDIA_MOUNTED)) { |
| Log.w(TAG, "Make sure sdcard is mounted."); |
| return null; |
| } |
| // Create new container at newCachePath |
| String codePath = packageURI.getPath(); |
| File codeFile = new File(codePath); |
| String newCachePath = null; |
| // Create new container |
| if ((newCachePath = PackageHelper.createSdDir(codeFile, |
| newCid, key, Process.myUid())) == null) { |
| Log.e(TAG, "Failed to create container " + newCid); |
| return null; |
| } |
| if (localLOGV) Log.i(TAG, "Created container for " + newCid |
| + " at path : " + newCachePath); |
| File resFile = new File(newCachePath, resFileName); |
| if (!FileUtils.copyFile(new File(codePath), resFile)) { |
| Log.e(TAG, "Failed to copy " + codePath + " to " + resFile); |
| // Clean up container |
| PackageHelper.destroySdDir(newCid); |
| return null; |
| } |
| if (localLOGV) Log.i(TAG, "Copied " + codePath + " to " + resFile); |
| if (!PackageHelper.finalizeSdDir(newCid)) { |
| Log.e(TAG, "Failed to finalize " + newCid + " at path " + newCachePath); |
| // Clean up container |
| PackageHelper.destroySdDir(newCid); |
| } |
| if (localLOGV) Log.i(TAG, "Finalized container " + newCid); |
| if (PackageHelper.isContainerMounted(newCid)) { |
| if (localLOGV) Log.i(TAG, "Unmounting " + newCid + |
| " at path " + newCachePath); |
| // Force a gc to avoid being killed. |
| Runtime.getRuntime().gc(); |
| PackageHelper.unMountSdDir(newCid); |
| } else { |
| if (localLOGV) Log.i(TAG, "Container " + newCid + " not mounted"); |
| } |
| return newCachePath; |
| } |
| |
| public static boolean copyToFile(InputStream inputStream, FileOutputStream out) { |
| try { |
| byte[] buffer = new byte[4096]; |
| int bytesRead; |
| while ((bytesRead = inputStream.read(buffer)) >= 0) { |
| out.write(buffer, 0, bytesRead); |
| } |
| return true; |
| } catch (IOException e) { |
| Log.i(TAG, "Exception : " + e + " when copying file"); |
| return false; |
| } |
| } |
| |
| public static boolean copyToFile(File srcFile, FileOutputStream out) { |
| InputStream inputStream = null; |
| try { |
| inputStream = new FileInputStream(srcFile); |
| return copyToFile(inputStream, out); |
| } catch (IOException e) { |
| return false; |
| } finally { |
| try { if (inputStream != null) inputStream.close(); } catch (IOException e) {} |
| } |
| } |
| |
| private boolean copyFile(Uri pPackageURI, FileOutputStream outStream) { |
| String scheme = pPackageURI.getScheme(); |
| if (scheme == null || scheme.equals("file")) { |
| final File srcPackageFile = new File(pPackageURI.getPath()); |
| // We copy the source package file to a temp file and then rename it to the |
| // destination file in order to eliminate a window where the package directory |
| // scanner notices the new package file but it's not completely copied yet. |
| if (!copyToFile(srcPackageFile, outStream)) { |
| Log.e(TAG, "Couldn't copy file: " + srcPackageFile); |
| return false; |
| } |
| } else if (scheme.equals("content")) { |
| ParcelFileDescriptor fd = null; |
| try { |
| fd = getContentResolver().openFileDescriptor(pPackageURI, "r"); |
| } catch (FileNotFoundException e) { |
| Log.e(TAG, "Couldn't open file descriptor from download service. Failed with exception " + e); |
| return false; |
| } |
| if (fd == null) { |
| Log.e(TAG, "Couldn't open file descriptor from download service (null)."); |
| return false; |
| } else { |
| if (localLOGV) { |
| Log.v(TAG, "Opened file descriptor from download service."); |
| } |
| ParcelFileDescriptor.AutoCloseInputStream |
| dlStream = new ParcelFileDescriptor.AutoCloseInputStream(fd); |
| // We copy the source package file to a temp file and then rename it to the |
| // destination file in order to eliminate a window where the package directory |
| // scanner notices the new package file but it's not completely copied yet. |
| if (!copyToFile(dlStream, outStream)) { |
| Log.e(TAG, "Couldn't copy " + pPackageURI + " to temp file."); |
| return false; |
| } |
| } |
| } else { |
| Log.e(TAG, "Package URI is not 'file:' or 'content:' - " + pPackageURI); |
| return false; |
| } |
| return true; |
| } |
| |
| // Constants related to app heuristics |
| // No-installation limit for internal flash: 10% or less space available |
| private static final double LOW_NAND_FLASH_TRESHOLD = 0.1; |
| |
| // SD-to-internal app size threshold: currently set to 1 MB |
| private static final long INSTALL_ON_SD_THRESHOLD = (1024 * 1024); |
| private static final int ERR_LOC = -1; |
| |
| private int recommendAppInstallLocation(int installLocation, |
| String archiveFilePath, int flags) { |
| boolean checkInt = false; |
| boolean checkExt = false; |
| boolean checkBoth = false; |
| check_inner : { |
| // Check flags. |
| if ((flags & PackageManager.INSTALL_FORWARD_LOCK) != 0) { |
| // Check for forward locked app |
| checkInt = true; |
| break check_inner; |
| } else if ((flags & PackageManager.INSTALL_INTERNAL) != 0) { |
| // Explicit flag to install internally. |
| // Check internal storage and return |
| checkInt = true; |
| break check_inner; |
| } else if ((flags & PackageManager.INSTALL_EXTERNAL) != 0) { |
| // Explicit flag to install externally. |
| // Check external storage and return |
| checkExt = true; |
| break check_inner; |
| } |
| // Check for manifest option |
| if (installLocation == PackageInfo.INSTALL_LOCATION_INTERNAL_ONLY) { |
| checkInt = true; |
| break check_inner; |
| } else if (installLocation == PackageInfo.INSTALL_LOCATION_PREFER_EXTERNAL) { |
| checkExt = true; |
| checkBoth = true; |
| break check_inner; |
| } else if (installLocation == PackageInfo.INSTALL_LOCATION_AUTO) { |
| checkInt = true; |
| checkBoth = true; |
| break check_inner; |
| } |
| // Pick user preference |
| int installPreference = Settings.System.getInt(getApplicationContext() |
| .getContentResolver(), |
| Settings.Secure.DEFAULT_INSTALL_LOCATION, |
| PackageHelper.APP_INSTALL_AUTO); |
| if (installPreference == PackageHelper.APP_INSTALL_INTERNAL) { |
| checkInt = true; |
| break check_inner; |
| } else if (installPreference == PackageHelper.APP_INSTALL_EXTERNAL) { |
| checkExt = true; |
| break check_inner; |
| } |
| // Fall back to default policy if nothing else is specified. |
| checkInt = true; |
| } |
| |
| // Package size = code size + cache size + data size |
| // If code size > 1 MB, install on SD card. |
| // Else install on internal NAND flash, unless space on NAND is less than 10% |
| String status = Environment.getExternalStorageState(); |
| long availSDSize = -1; |
| boolean mediaAvailable = false; |
| if (status.equals(Environment.MEDIA_MOUNTED)) { |
| StatFs sdStats = new StatFs( |
| Environment.getExternalStorageDirectory().getPath()); |
| availSDSize = (long)sdStats.getAvailableBlocks() * |
| (long)sdStats.getBlockSize(); |
| mediaAvailable = true; |
| } |
| StatFs internalStats = new StatFs(Environment.getDataDirectory().getPath()); |
| long totalInternalSize = (long)internalStats.getBlockCount() * |
| (long)internalStats.getBlockSize(); |
| long availInternalSize = (long)internalStats.getAvailableBlocks() * |
| (long)internalStats.getBlockSize(); |
| |
| double pctNandFree = (double)availInternalSize / (double)totalInternalSize; |
| |
| File apkFile = new File(archiveFilePath); |
| long pkgLen = apkFile.length(); |
| |
| // To make final copy |
| long reqInstallSize = pkgLen; |
| // For dex files. Just ignore and fail when extracting. Max limit of 2Gig for now. |
| long reqInternalSize = 0; |
| boolean intThresholdOk = (pctNandFree >= LOW_NAND_FLASH_TRESHOLD); |
| boolean intAvailOk = ((reqInstallSize + reqInternalSize) < availInternalSize); |
| boolean fitsOnSd = false; |
| if (mediaAvailable && (reqInstallSize < availSDSize)) { |
| // If we do not have an internal size requirement |
| // don't do a threshold check. |
| if (reqInternalSize == 0) { |
| fitsOnSd = true; |
| } else if ((reqInternalSize < availInternalSize) && intThresholdOk) { |
| fitsOnSd = true; |
| } |
| } |
| boolean fitsOnInt = intThresholdOk && intAvailOk; |
| if (checkInt) { |
| // Check for internal memory availability |
| if (fitsOnInt) { |
| return PackageHelper.RECOMMEND_INSTALL_INTERNAL; |
| } |
| } else if (checkExt) { |
| if (fitsOnSd) { |
| return PackageHelper.RECOMMEND_INSTALL_EXTERNAL; |
| } |
| } |
| if (checkBoth) { |
| // Check for internal first |
| if (fitsOnInt) { |
| return PackageHelper.RECOMMEND_INSTALL_INTERNAL; |
| } |
| // Check for external next |
| if (fitsOnSd) { |
| return PackageHelper.RECOMMEND_INSTALL_EXTERNAL; |
| } |
| } |
| if ((checkExt || checkBoth) && !mediaAvailable) { |
| return PackageHelper.RECOMMEND_MEDIA_UNAVAILABLE; |
| } |
| return PackageHelper.RECOMMEND_FAILED_INSUFFICIENT_STORAGE; |
| } |
| |
| private boolean checkFreeStorageInner(boolean external, Uri packageURI) { |
| File apkFile = new File(packageURI.getPath()); |
| long size = apkFile.length(); |
| if (external) { |
| String status = Environment.getExternalStorageState(); |
| long availSDSize = -1; |
| if (status.equals(Environment.MEDIA_MOUNTED)) { |
| StatFs sdStats = new StatFs( |
| Environment.getExternalStorageDirectory().getPath()); |
| availSDSize = (long)sdStats.getAvailableBlocks() * |
| (long)sdStats.getBlockSize(); |
| } |
| return availSDSize > size; |
| } |
| StatFs internalStats = new StatFs(Environment.getDataDirectory().getPath()); |
| long totalInternalSize = (long)internalStats.getBlockCount() * |
| (long)internalStats.getBlockSize(); |
| long availInternalSize = (long)internalStats.getAvailableBlocks() * |
| (long)internalStats.getBlockSize(); |
| |
| double pctNandFree = (double)availInternalSize / (double)totalInternalSize; |
| // To make final copy |
| long reqInstallSize = size; |
| // For dex files. Just ignore and fail when extracting. Max limit of 2Gig for now. |
| long reqInternalSize = 0; |
| boolean intThresholdOk = (pctNandFree >= LOW_NAND_FLASH_TRESHOLD); |
| boolean intAvailOk = ((reqInstallSize + reqInternalSize) < availInternalSize); |
| return intThresholdOk && intAvailOk; |
| } |
| } |
