| /* |
| * Copyright (C) 2015 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.mtp; |
| |
| import static com.android.mtp.MtpDatabaseConstants.*; |
| |
| import android.annotation.Nullable; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.database.Cursor; |
| import android.database.DatabaseUtils; |
| import android.database.MatrixCursor; |
| import android.database.MatrixCursor.RowBuilder; |
| import android.database.sqlite.SQLiteDatabase; |
| import android.database.sqlite.SQLiteException; |
| import android.database.sqlite.SQLiteOpenHelper; |
| import android.database.sqlite.SQLiteQueryBuilder; |
| import android.media.MediaFile; |
| import android.mtp.MtpConstants; |
| import android.mtp.MtpObjectInfo; |
| import android.net.Uri; |
| import android.provider.DocumentsContract; |
| import android.provider.MetadataReader; |
| import android.provider.DocumentsContract.Document; |
| import android.provider.DocumentsContract.Root; |
| import android.util.Log; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.util.Preconditions; |
| |
| import java.io.FileNotFoundException; |
| import java.util.HashSet; |
| import java.util.Objects; |
| import java.util.Set; |
| |
| /** |
| * Database for MTP objects. |
| * The object handle which is identifier for object in MTP protocol is not stable over sessions. |
| * When we resume the process, we need to remap our document ID with MTP's object handle. |
| * |
| * If the remote MTP device is backed by typical file system, the file name |
| * is unique among files in a directory. However, MTP protocol itself does |
| * not guarantee the uniqueness of name so we cannot use fullpath as ID. |
| * |
| * Instead of fullpath, we use artificial ID generated by MtpDatabase itself. The database object |
| * remembers the map of document ID and object handle, and remaps new object handle with document ID |
| * by comparing the directory structure and object name. |
| * |
| * To start putting documents into the database, the client needs to call |
| * {@link Mapper#startAddingDocuments(String)} with the parent document ID. Also it |
| * needs to call {@link Mapper#stopAddingDocuments(String)} after putting all child |
| * documents to the database. (All explanations are same for root documents) |
| * |
| * database.getMapper().startAddingDocuments(); |
| * database.getMapper().putChildDocuments(); |
| * database.getMapper().stopAddingDocuments(); |
| * |
| * To update the existing documents, the client code can repeat to call the three methods again. |
| * The newly added rows update corresponding existing rows that have same MTP identifier like |
| * objectHandle. |
| * |
| * The client can call putChildDocuments multiple times to add documents by chunk, but it needs to |
| * put all documents under the parent before calling stopAddingChildDocuments. Otherwise missing |
| * documents are regarded as deleted, and will be removed from the database. |
| * |
| * If the client calls clearMtpIdentifier(), it clears MTP identifier in the database. In this case, |
| * the database tries to find corresponding rows by using document's name instead of MTP identifier |
| * at the next update cycle. |
| * |
| * TODO: Improve performance by SQL optimization. |
| */ |
| class MtpDatabase { |
| private static final String TAG = "MtpDatabaseHost"; |
| |
| private final SQLiteDatabase mDatabase; |
| private final Mapper mMapper; |
| |
| SQLiteDatabase getSQLiteDatabase() { |
| return mDatabase; |
| } |
| |
| MtpDatabase(Context context, int flags) { |
| final OpenHelper helper = new OpenHelper(context, flags); |
| mDatabase = helper.getWritableDatabase(); |
| mMapper = new Mapper(this); |
| } |
| |
| void close() { |
| mDatabase.close(); |
| } |
| |
| /** |
| * Returns operations for mapping. |
| * @return Mapping operations. |
| */ |
| Mapper getMapper() { |
| return mMapper; |
| } |
| |
| /** |
| * Queries roots information. |
| * @param columnNames Column names defined in {@link android.provider.DocumentsContract.Root}. |
| * @return Database cursor. |
| */ |
| Cursor queryRoots(Resources resources, String[] columnNames) { |
| final String selection = |
| COLUMN_ROW_STATE + " IN (?, ?) AND " + COLUMN_DOCUMENT_TYPE + " = ?"; |
| final Cursor deviceCursor = mDatabase.query( |
| TABLE_DOCUMENTS, |
| strings(COLUMN_DEVICE_ID), |
| selection, |
| strings(ROW_STATE_VALID, ROW_STATE_INVALIDATED, DOCUMENT_TYPE_DEVICE), |
| COLUMN_DEVICE_ID, |
| null, |
| null, |
| null); |
| |
| try { |
| final SQLiteQueryBuilder builder = new SQLiteQueryBuilder(); |
| builder.setTables(JOIN_ROOTS); |
| builder.setProjectionMap(COLUMN_MAP_ROOTS); |
| final MatrixCursor result = new MatrixCursor(columnNames); |
| final ContentValues values = new ContentValues(); |
| |
| while (deviceCursor.moveToNext()) { |
| final int deviceId = deviceCursor.getInt(0); |
| final Cursor storageCursor = builder.query( |
| mDatabase, |
| columnNames, |
| selection + " AND " + COLUMN_DEVICE_ID + " = ?", |
| strings(ROW_STATE_VALID, |
| ROW_STATE_INVALIDATED, |
| DOCUMENT_TYPE_STORAGE, |
| deviceId), |
| null, |
| null, |
| null); |
| try { |
| values.clear(); |
| try (final Cursor deviceRoot = builder.query( |
| mDatabase, |
| columnNames, |
| selection + " AND " + COLUMN_DEVICE_ID + " = ?", |
| strings(ROW_STATE_VALID, |
| ROW_STATE_INVALIDATED, |
| DOCUMENT_TYPE_DEVICE, |
| deviceId), |
| null, |
| null, |
| null)) { |
| deviceRoot.moveToNext(); |
| DatabaseUtils.cursorRowToContentValues(deviceRoot, values); |
| } |
| |
| if (storageCursor.getCount() != 0) { |
| long capacityBytes = 0; |
| long availableBytes = 0; |
| final int capacityIndex = |
| storageCursor.getColumnIndex(Root.COLUMN_CAPACITY_BYTES); |
| final int availableIndex = |
| storageCursor.getColumnIndex(Root.COLUMN_AVAILABLE_BYTES); |
| while (storageCursor.moveToNext()) { |
| // If requested columnNames does not include COLUMN_XXX_BYTES, we |
| // don't calculate corresponding values. |
| if (capacityIndex != -1) { |
| capacityBytes += storageCursor.getLong(capacityIndex); |
| } |
| if (availableIndex != -1) { |
| availableBytes += storageCursor.getLong(availableIndex); |
| } |
| } |
| values.put(Root.COLUMN_CAPACITY_BYTES, capacityBytes); |
| values.put(Root.COLUMN_AVAILABLE_BYTES, availableBytes); |
| } else { |
| values.putNull(Root.COLUMN_CAPACITY_BYTES); |
| values.putNull(Root.COLUMN_AVAILABLE_BYTES); |
| } |
| if (storageCursor.getCount() == 1 && values.containsKey(Root.COLUMN_TITLE)) { |
| storageCursor.moveToFirst(); |
| // Add storage name to device name if we have only 1 storage. |
| values.put( |
| Root.COLUMN_TITLE, |
| resources.getString( |
| R.string.root_name, |
| values.getAsString(Root.COLUMN_TITLE), |
| storageCursor.getString( |
| storageCursor.getColumnIndex(Root.COLUMN_TITLE)))); |
| } |
| } finally { |
| storageCursor.close(); |
| } |
| |
| putValuesToCursor(values, result); |
| } |
| |
| return result; |
| } finally { |
| deviceCursor.close(); |
| } |
| } |
| |
| /** |
| * Queries root documents information. |
| * @param columnNames Column names defined in |
| * {@link android.provider.DocumentsContract.Document}. |
| * @return Database cursor. |
| */ |
| @VisibleForTesting |
| Cursor queryRootDocuments(String[] columnNames) { |
| return mDatabase.query( |
| TABLE_DOCUMENTS, |
| columnNames, |
| COLUMN_ROW_STATE + " IN (?, ?) AND " + COLUMN_DOCUMENT_TYPE + " = ?", |
| strings(ROW_STATE_VALID, ROW_STATE_INVALIDATED, DOCUMENT_TYPE_STORAGE), |
| null, |
| null, |
| null); |
| } |
| |
| /** |
| * Queries documents information. |
| * @param columnNames Column names defined in |
| * {@link android.provider.DocumentsContract.Document}. |
| * @return Database cursor. |
| */ |
| Cursor queryChildDocuments(String[] columnNames, String parentDocumentId) { |
| return mDatabase.query( |
| TABLE_DOCUMENTS, |
| columnNames, |
| COLUMN_ROW_STATE + " IN (?, ?) AND " + COLUMN_PARENT_DOCUMENT_ID + " = ?", |
| strings(ROW_STATE_VALID, ROW_STATE_INVALIDATED, parentDocumentId), |
| null, |
| null, |
| null); |
| } |
| |
| /** |
| * Returns document IDs of storages under the given device document. |
| * |
| * @param documentId Document ID that points a device. |
| * @return Storage document IDs. |
| * @throws FileNotFoundException The given document ID is not registered in database. |
| */ |
| String[] getStorageDocumentIds(String documentId) |
| throws FileNotFoundException { |
| Preconditions.checkArgument(createIdentifier(documentId).mDocumentType == |
| DOCUMENT_TYPE_DEVICE); |
| // Check if the parent document is device that has single storage. |
| try (final Cursor cursor = mDatabase.query( |
| TABLE_DOCUMENTS, |
| strings(Document.COLUMN_DOCUMENT_ID), |
| COLUMN_ROW_STATE + " IN (?, ?) AND " + |
| COLUMN_PARENT_DOCUMENT_ID + " = ? AND " + |
| COLUMN_DOCUMENT_TYPE + " = ?", |
| strings(ROW_STATE_VALID, |
| ROW_STATE_INVALIDATED, |
| documentId, |
| DOCUMENT_TYPE_STORAGE), |
| null, |
| null, |
| null)) { |
| final String[] ids = new String[cursor.getCount()]; |
| for (int i = 0; cursor.moveToNext(); i++) { |
| ids[i] = cursor.getString(0); |
| } |
| return ids; |
| } |
| } |
| |
| /** |
| * Queries a single document. |
| * @param documentId |
| * @param projection |
| * @return Database cursor. |
| */ |
| Cursor queryDocument(String documentId, String[] projection) { |
| return mDatabase.query( |
| TABLE_DOCUMENTS, |
| projection, |
| SELECTION_DOCUMENT_ID, |
| strings(documentId), |
| null, |
| null, |
| null, |
| "1"); |
| } |
| |
| @Nullable String getDocumentIdForDevice(int deviceId) { |
| final Cursor cursor = mDatabase.query( |
| TABLE_DOCUMENTS, |
| strings(Document.COLUMN_DOCUMENT_ID), |
| COLUMN_DOCUMENT_TYPE + " = ? AND " + COLUMN_DEVICE_ID + " = ?", |
| strings(DOCUMENT_TYPE_DEVICE, deviceId), |
| null, |
| null, |
| null, |
| "1"); |
| try { |
| if (cursor.moveToNext()) { |
| return cursor.getString(0); |
| } else { |
| return null; |
| } |
| } finally { |
| cursor.close(); |
| } |
| } |
| |
| /** |
| * Obtains parent identifier. |
| * @param documentId |
| * @return parent identifier. |
| * @throws FileNotFoundException |
| */ |
| Identifier getParentIdentifier(String documentId) throws FileNotFoundException { |
| final Cursor cursor = mDatabase.query( |
| TABLE_DOCUMENTS, |
| strings(COLUMN_PARENT_DOCUMENT_ID), |
| SELECTION_DOCUMENT_ID, |
| strings(documentId), |
| null, |
| null, |
| null, |
| "1"); |
| try { |
| if (cursor.moveToNext()) { |
| return createIdentifier(cursor.getString(0)); |
| } else { |
| throw new FileNotFoundException("Cannot find a row having ID = " + documentId); |
| } |
| } finally { |
| cursor.close(); |
| } |
| } |
| |
| String getDeviceDocumentId(int deviceId) throws FileNotFoundException { |
| try (final Cursor cursor = mDatabase.query( |
| TABLE_DOCUMENTS, |
| strings(Document.COLUMN_DOCUMENT_ID), |
| COLUMN_DEVICE_ID + " = ? AND " + COLUMN_DOCUMENT_TYPE + " = ? AND " + |
| COLUMN_ROW_STATE + " != ?", |
| strings(deviceId, DOCUMENT_TYPE_DEVICE, ROW_STATE_DISCONNECTED), |
| null, |
| null, |
| null, |
| "1")) { |
| if (cursor.getCount() > 0) { |
| cursor.moveToNext(); |
| return cursor.getString(0); |
| } else { |
| throw new FileNotFoundException("The device ID not found: " + deviceId); |
| } |
| } |
| } |
| |
| /** |
| * Adds new document under the parent. |
| * The method does not affect invalidated and pending documents because we know the document is |
| * newly added and never mapped with existing ones. |
| * @param parentDocumentId |
| * @param info |
| * @param size Object size. info#getCompressedSize() will be ignored because it does not contain |
| * object size more than 4GB. |
| * @return Document ID of added document. |
| */ |
| String putNewDocument( |
| int deviceId, String parentDocumentId, int[] operationsSupported, MtpObjectInfo info, |
| long size) { |
| final ContentValues values = new ContentValues(); |
| getObjectDocumentValues( |
| values, deviceId, parentDocumentId, operationsSupported, info, size); |
| mDatabase.beginTransaction(); |
| try { |
| final long id = mDatabase.insert(TABLE_DOCUMENTS, null, values); |
| mDatabase.setTransactionSuccessful(); |
| return Long.toString(id); |
| } finally { |
| mDatabase.endTransaction(); |
| } |
| } |
| |
| /** |
| * Deletes document and its children. |
| * @param documentId |
| */ |
| void deleteDocument(String documentId) { |
| deleteDocumentsAndRootsRecursively(SELECTION_DOCUMENT_ID, strings(documentId)); |
| } |
| |
| /** |
| * Gets identifier from document ID. |
| * @param documentId Document ID. |
| * @return Identifier. |
| * @throws FileNotFoundException |
| */ |
| Identifier createIdentifier(String documentId) throws FileNotFoundException { |
| // Currently documentId is old format. |
| final Cursor cursor = mDatabase.query( |
| TABLE_DOCUMENTS, |
| strings(COLUMN_DEVICE_ID, |
| COLUMN_STORAGE_ID, |
| COLUMN_OBJECT_HANDLE, |
| COLUMN_DOCUMENT_TYPE), |
| SELECTION_DOCUMENT_ID + " AND " + COLUMN_ROW_STATE + " IN (?, ?)", |
| strings(documentId, ROW_STATE_VALID, ROW_STATE_INVALIDATED), |
| null, |
| null, |
| null, |
| "1"); |
| try { |
| if (cursor.getCount() == 0) { |
| throw new FileNotFoundException("ID \"" + documentId + "\" is not found."); |
| } else { |
| cursor.moveToNext(); |
| return new Identifier( |
| cursor.getInt(0), |
| cursor.getInt(1), |
| cursor.getInt(2), |
| documentId, |
| cursor.getInt(3)); |
| } |
| } finally { |
| cursor.close(); |
| } |
| } |
| |
| /** |
| * Deletes a document, and its root information if the document is a root document. |
| * @param selection Query to select documents. |
| * @param args Arguments for selection. |
| * @return Whether the method deletes rows. |
| */ |
| boolean deleteDocumentsAndRootsRecursively(String selection, String[] args) { |
| mDatabase.beginTransaction(); |
| try { |
| boolean changed = false; |
| final Cursor cursor = mDatabase.query( |
| TABLE_DOCUMENTS, |
| strings(Document.COLUMN_DOCUMENT_ID), |
| selection, |
| args, |
| null, |
| null, |
| null); |
| try { |
| while (cursor.moveToNext()) { |
| if (deleteDocumentsAndRootsRecursively( |
| COLUMN_PARENT_DOCUMENT_ID + " = ?", |
| strings(cursor.getString(0)))) { |
| changed = true; |
| } |
| } |
| } finally { |
| cursor.close(); |
| } |
| if (deleteDocumentsAndRoots(selection, args)) { |
| changed = true; |
| } |
| mDatabase.setTransactionSuccessful(); |
| return changed; |
| } finally { |
| mDatabase.endTransaction(); |
| } |
| } |
| |
| /** |
| * Marks the documents and their child as disconnected documents. |
| * @param selection |
| * @param args |
| * @return True if at least one row is updated. |
| */ |
| boolean disconnectDocumentsRecursively(String selection, String[] args) { |
| mDatabase.beginTransaction(); |
| try { |
| boolean changed = false; |
| try (final Cursor cursor = mDatabase.query( |
| TABLE_DOCUMENTS, |
| strings(Document.COLUMN_DOCUMENT_ID), |
| selection, |
| args, |
| null, |
| null, |
| null)) { |
| while (cursor.moveToNext()) { |
| if (disconnectDocumentsRecursively( |
| COLUMN_PARENT_DOCUMENT_ID + " = ?", |
| strings(cursor.getString(0)))) { |
| changed = true; |
| } |
| } |
| } |
| if (disconnectDocuments(selection, args)) { |
| changed = true; |
| } |
| mDatabase.setTransactionSuccessful(); |
| return changed; |
| } finally { |
| mDatabase.endTransaction(); |
| } |
| } |
| |
| boolean deleteDocumentsAndRoots(String selection, String[] args) { |
| mDatabase.beginTransaction(); |
| try { |
| int deleted = 0; |
| deleted += mDatabase.delete( |
| TABLE_ROOT_EXTRA, |
| Root.COLUMN_ROOT_ID + " IN (" + SQLiteQueryBuilder.buildQueryString( |
| false, |
| TABLE_DOCUMENTS, |
| new String[] { Document.COLUMN_DOCUMENT_ID }, |
| selection, |
| null, |
| null, |
| null, |
| null) + ")", |
| args); |
| deleted += mDatabase.delete(TABLE_DOCUMENTS, selection, args); |
| mDatabase.setTransactionSuccessful(); |
| // TODO Remove mappingState. |
| return deleted != 0; |
| } catch (SQLiteException exSql) { |
| Log.w(TAG, "SQLiteException:" + selection, exSql); |
| return false; |
| } finally { |
| mDatabase.endTransaction(); |
| } |
| } |
| |
| boolean disconnectDocuments(String selection, String[] args) { |
| mDatabase.beginTransaction(); |
| try { |
| final ContentValues values = new ContentValues(); |
| values.put(COLUMN_ROW_STATE, ROW_STATE_DISCONNECTED); |
| values.putNull(COLUMN_DEVICE_ID); |
| values.putNull(COLUMN_STORAGE_ID); |
| values.putNull(COLUMN_OBJECT_HANDLE); |
| final boolean updated = mDatabase.update(TABLE_DOCUMENTS, values, selection, args) != 0; |
| mDatabase.setTransactionSuccessful(); |
| return updated; |
| } finally { |
| mDatabase.endTransaction(); |
| } |
| } |
| |
| int getRowState(String documentId) throws FileNotFoundException { |
| try (final Cursor cursor = mDatabase.query( |
| TABLE_DOCUMENTS, |
| strings(COLUMN_ROW_STATE), |
| SELECTION_DOCUMENT_ID, |
| strings(documentId), |
| null, |
| null, |
| null)) { |
| if (cursor.getCount() == 0) { |
| throw new FileNotFoundException(); |
| } |
| cursor.moveToNext(); |
| return cursor.getInt(0); |
| } |
| } |
| |
| void writeRowSnapshot(String documentId, ContentValues values) throws FileNotFoundException { |
| try (final Cursor cursor = mDatabase.query( |
| JOIN_ROOTS, |
| strings("*"), |
| SELECTION_DOCUMENT_ID, |
| strings(documentId), |
| null, |
| null, |
| null, |
| "1")) { |
| if (cursor.getCount() == 0) { |
| throw new FileNotFoundException(); |
| } |
| cursor.moveToNext(); |
| values.clear(); |
| DatabaseUtils.cursorRowToContentValues(cursor, values); |
| } |
| } |
| |
| void updateObject(String documentId, int deviceId, String parentId, int[] operationsSupported, |
| MtpObjectInfo info, Long size) { |
| final ContentValues values = new ContentValues(); |
| getObjectDocumentValues(values, deviceId, parentId, operationsSupported, info, size); |
| |
| mDatabase.beginTransaction(); |
| try { |
| mDatabase.update( |
| TABLE_DOCUMENTS, |
| values, |
| Document.COLUMN_DOCUMENT_ID + " = ?", |
| strings(documentId)); |
| mDatabase.setTransactionSuccessful(); |
| } finally { |
| mDatabase.endTransaction(); |
| } |
| } |
| |
| /** |
| * Obtains a document that has already mapped but has unmapped children. |
| * @param deviceId Device to find documents. |
| * @return Identifier of found document or null. |
| */ |
| @Nullable Identifier getUnmappedDocumentsParent(int deviceId) { |
| final String fromClosure = |
| TABLE_DOCUMENTS + " AS child INNER JOIN " + |
| TABLE_DOCUMENTS + " AS parent ON " + |
| "child." + COLUMN_PARENT_DOCUMENT_ID + " = " + |
| "parent." + Document.COLUMN_DOCUMENT_ID; |
| final String whereClosure = |
| "parent." + COLUMN_DEVICE_ID + " = ? AND " + |
| "parent." + COLUMN_ROW_STATE + " IN (?, ?) AND " + |
| "parent." + COLUMN_DOCUMENT_TYPE + " != ? AND " + |
| "child." + COLUMN_ROW_STATE + " = ?"; |
| try (final Cursor cursor = mDatabase.query( |
| fromClosure, |
| strings("parent." + COLUMN_DEVICE_ID, |
| "parent." + COLUMN_STORAGE_ID, |
| "parent." + COLUMN_OBJECT_HANDLE, |
| "parent." + Document.COLUMN_DOCUMENT_ID, |
| "parent." + COLUMN_DOCUMENT_TYPE), |
| whereClosure, |
| strings(deviceId, ROW_STATE_VALID, ROW_STATE_INVALIDATED, DOCUMENT_TYPE_DEVICE, |
| ROW_STATE_DISCONNECTED), |
| null, |
| null, |
| null, |
| "1")) { |
| if (cursor.getCount() == 0) { |
| return null; |
| } |
| cursor.moveToNext(); |
| return new Identifier( |
| cursor.getInt(0), |
| cursor.getInt(1), |
| cursor.getInt(2), |
| cursor.getString(3), |
| cursor.getInt(4)); |
| } |
| } |
| |
| /** |
| * Removes metadata except for data used by outgoingPersistedUriPermissions. |
| */ |
| void cleanDatabase(Uri[] outgoingPersistedUris) { |
| mDatabase.beginTransaction(); |
| try { |
| final Set<String> ids = new HashSet<>(); |
| for (final Uri uri : outgoingPersistedUris) { |
| String documentId = DocumentsContract.getDocumentId(uri); |
| while (documentId != null) { |
| if (ids.contains(documentId)) { |
| break; |
| } |
| ids.add(documentId); |
| try (final Cursor cursor = mDatabase.query( |
| TABLE_DOCUMENTS, |
| strings(COLUMN_PARENT_DOCUMENT_ID), |
| SELECTION_DOCUMENT_ID, |
| strings(documentId), |
| null, |
| null, |
| null)) { |
| documentId = cursor.moveToNext() ? cursor.getString(0) : null; |
| } |
| } |
| } |
| deleteDocumentsAndRoots( |
| Document.COLUMN_DOCUMENT_ID + " NOT IN " + getIdList(ids), null); |
| mDatabase.setTransactionSuccessful(); |
| } finally { |
| mDatabase.endTransaction(); |
| } |
| } |
| |
| int getLastBootCount() { |
| try (final Cursor cursor = mDatabase.query( |
| TABLE_LAST_BOOT_COUNT, strings(COLUMN_VALUE), null, null, null, null, null)) { |
| if (cursor.moveToNext()) { |
| return cursor.getInt(0); |
| } else { |
| return 0; |
| } |
| } |
| } |
| |
| void setLastBootCount(int value) { |
| Preconditions.checkArgumentNonnegative(value, "Boot count must not be negative."); |
| mDatabase.beginTransaction(); |
| try { |
| final ContentValues values = new ContentValues(); |
| values.put(COLUMN_VALUE, value); |
| mDatabase.delete(TABLE_LAST_BOOT_COUNT, null, null); |
| mDatabase.insert(TABLE_LAST_BOOT_COUNT, null, values); |
| mDatabase.setTransactionSuccessful(); |
| } finally { |
| mDatabase.endTransaction(); |
| } |
| } |
| |
| private static class OpenHelper extends SQLiteOpenHelper { |
| public OpenHelper(Context context, int flags) { |
| super(context, |
| flags == FLAG_DATABASE_IN_MEMORY ? null : DATABASE_NAME, |
| null, |
| DATABASE_VERSION); |
| } |
| |
| @Override |
| public void onCreate(SQLiteDatabase db) { |
| db.execSQL(QUERY_CREATE_DOCUMENTS); |
| db.execSQL(QUERY_CREATE_ROOT_EXTRA); |
| db.execSQL(QUERY_CREATE_LAST_BOOT_COUNT); |
| } |
| |
| @Override |
| public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_DOCUMENTS); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_ROOT_EXTRA); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_LAST_BOOT_COUNT); |
| onCreate(db); |
| } |
| } |
| |
| @VisibleForTesting |
| static void deleteDatabase(Context context) { |
| context.deleteDatabase(DATABASE_NAME); |
| } |
| |
| static void getDeviceDocumentValues( |
| ContentValues values, |
| ContentValues extraValues, |
| MtpDeviceRecord device) { |
| values.clear(); |
| values.put(COLUMN_DEVICE_ID, device.deviceId); |
| values.putNull(COLUMN_STORAGE_ID); |
| values.putNull(COLUMN_OBJECT_HANDLE); |
| values.putNull(COLUMN_PARENT_DOCUMENT_ID); |
| values.put(COLUMN_ROW_STATE, ROW_STATE_VALID); |
| values.put(COLUMN_DOCUMENT_TYPE, DOCUMENT_TYPE_DEVICE); |
| values.put(COLUMN_MAPPING_KEY, device.deviceKey); |
| values.put(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR); |
| values.put(Document.COLUMN_DISPLAY_NAME, device.name); |
| values.putNull(Document.COLUMN_SUMMARY); |
| values.putNull(Document.COLUMN_LAST_MODIFIED); |
| values.put(Document.COLUMN_ICON, R.drawable.ic_root_mtp); |
| values.put(Document.COLUMN_FLAGS, getDocumentFlags( |
| device.operationsSupported, |
| Document.MIME_TYPE_DIR, |
| 0, |
| MtpConstants.PROTECTION_STATUS_NONE, |
| // Storages are placed under device so we cannot create a document just under |
| // device. |
| DOCUMENT_TYPE_DEVICE) & ~Document.FLAG_DIR_SUPPORTS_CREATE); |
| values.putNull(Document.COLUMN_SIZE); |
| |
| extraValues.clear(); |
| extraValues.put(Root.COLUMN_FLAGS, getRootFlags(device.operationsSupported)); |
| extraValues.putNull(Root.COLUMN_AVAILABLE_BYTES); |
| extraValues.putNull(Root.COLUMN_CAPACITY_BYTES); |
| extraValues.put(Root.COLUMN_MIME_TYPES, ""); |
| } |
| |
| /** |
| * Gets {@link ContentValues} for the given root. |
| * @param values {@link ContentValues} that receives values. |
| * @param extraValues {@link ContentValues} that receives extra values for roots. |
| * @param parentDocumentId Parent document ID. |
| * @param operationsSupported Array of Operation code supported by the device. |
| * @param root Root to be converted {@link ContentValues}. |
| */ |
| static void getStorageDocumentValues( |
| ContentValues values, |
| ContentValues extraValues, |
| String parentDocumentId, |
| int[] operationsSupported, |
| MtpRoot root) { |
| values.clear(); |
| values.put(COLUMN_DEVICE_ID, root.mDeviceId); |
| values.put(COLUMN_STORAGE_ID, root.mStorageId); |
| values.putNull(COLUMN_OBJECT_HANDLE); |
| values.put(COLUMN_PARENT_DOCUMENT_ID, parentDocumentId); |
| values.put(COLUMN_ROW_STATE, ROW_STATE_VALID); |
| values.put(COLUMN_DOCUMENT_TYPE, DOCUMENT_TYPE_STORAGE); |
| values.put(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR); |
| values.put(Document.COLUMN_DISPLAY_NAME, root.mDescription); |
| values.putNull(Document.COLUMN_SUMMARY); |
| values.putNull(Document.COLUMN_LAST_MODIFIED); |
| values.put(Document.COLUMN_ICON, R.drawable.ic_root_mtp); |
| values.put(Document.COLUMN_FLAGS, getDocumentFlags( |
| operationsSupported, |
| Document.MIME_TYPE_DIR, |
| 0, |
| MtpConstants.PROTECTION_STATUS_NONE, |
| DOCUMENT_TYPE_STORAGE)); |
| values.put(Document.COLUMN_SIZE, root.mMaxCapacity - root.mFreeSpace); |
| |
| extraValues.put(Root.COLUMN_FLAGS, getRootFlags(operationsSupported)); |
| extraValues.put(Root.COLUMN_AVAILABLE_BYTES, root.mFreeSpace); |
| extraValues.put(Root.COLUMN_CAPACITY_BYTES, root.mMaxCapacity); |
| extraValues.put(Root.COLUMN_MIME_TYPES, ""); |
| } |
| |
| /** |
| * Gets {@link ContentValues} for the given MTP object. |
| * @param values {@link ContentValues} that receives values. |
| * @param deviceId Device ID of the object. |
| * @param parentId Parent document ID of the object. |
| * @param info MTP object info. getCompressedSize will be ignored. |
| * @param size 64-bit size of documents. Negative value is regarded as unknown size. |
| */ |
| static void getObjectDocumentValues( |
| ContentValues values, int deviceId, String parentId, |
| int[] operationsSupported, MtpObjectInfo info, long size) { |
| values.clear(); |
| final String mimeType = getMimeType(info); |
| values.put(COLUMN_DEVICE_ID, deviceId); |
| values.put(COLUMN_STORAGE_ID, info.getStorageId()); |
| values.put(COLUMN_OBJECT_HANDLE, info.getObjectHandle()); |
| values.put(COLUMN_PARENT_DOCUMENT_ID, parentId); |
| values.put(COLUMN_ROW_STATE, ROW_STATE_VALID); |
| values.put(COLUMN_DOCUMENT_TYPE, DOCUMENT_TYPE_OBJECT); |
| values.put(Document.COLUMN_MIME_TYPE, mimeType); |
| values.put(Document.COLUMN_DISPLAY_NAME, info.getName()); |
| values.putNull(Document.COLUMN_SUMMARY); |
| values.put( |
| Document.COLUMN_LAST_MODIFIED, |
| info.getDateModified() != 0 ? info.getDateModified() : null); |
| values.putNull(Document.COLUMN_ICON); |
| values.put(Document.COLUMN_FLAGS, getDocumentFlags( |
| operationsSupported, mimeType, info.getThumbCompressedSizeLong(), |
| info.getProtectionStatus(), DOCUMENT_TYPE_OBJECT)); |
| if (size >= 0) { |
| values.put(Document.COLUMN_SIZE, size); |
| } else { |
| values.putNull(Document.COLUMN_SIZE); |
| } |
| } |
| |
| private static String getMimeType(MtpObjectInfo info) { |
| if (info.getFormat() == MtpConstants.FORMAT_ASSOCIATION) { |
| return DocumentsContract.Document.MIME_TYPE_DIR; |
| } |
| |
| return MediaFile.getMimeType(info.getName(), info.getFormat()); |
| } |
| |
| private static int getRootFlags(int[] operationsSupported) { |
| int rootFlag = Root.FLAG_SUPPORTS_IS_CHILD | Root.FLAG_LOCAL_ONLY; |
| if (MtpDeviceRecord.isWritingSupported(operationsSupported)) { |
| rootFlag |= Root.FLAG_SUPPORTS_CREATE; |
| } |
| return rootFlag; |
| } |
| |
| private static int getDocumentFlags( |
| @Nullable int[] operationsSupported, String mimeType, long thumbnailSize, |
| int protectionState, @DocumentType int documentType) { |
| int flag = 0; |
| if (!mimeType.equals(Document.MIME_TYPE_DIR) && |
| MtpDeviceRecord.isWritingSupported(operationsSupported) && |
| protectionState == MtpConstants.PROTECTION_STATUS_NONE) { |
| flag |= Document.FLAG_SUPPORTS_WRITE; |
| } |
| if (MtpDeviceRecord.isSupported( |
| operationsSupported, MtpConstants.OPERATION_DELETE_OBJECT) && |
| (protectionState == MtpConstants.PROTECTION_STATUS_NONE || |
| protectionState == MtpConstants.PROTECTION_STATUS_NON_TRANSFERABLE_DATA) && |
| documentType == DOCUMENT_TYPE_OBJECT) { |
| flag |= Document.FLAG_SUPPORTS_DELETE; |
| } |
| if (mimeType.equals(Document.MIME_TYPE_DIR) && |
| MtpDeviceRecord.isWritingSupported(operationsSupported) && |
| protectionState == MtpConstants.PROTECTION_STATUS_NONE) { |
| flag |= Document.FLAG_DIR_SUPPORTS_CREATE; |
| } |
| if (MetadataReader.isSupportedMimeType(mimeType)) { |
| flag |= Document.FLAG_SUPPORTS_METADATA; |
| } |
| if (thumbnailSize > 0) { |
| flag |= Document.FLAG_SUPPORTS_THUMBNAIL; |
| } |
| return flag; |
| } |
| |
| static String[] strings(Object... args) { |
| final String[] results = new String[args.length]; |
| for (int i = 0; i < args.length; i++) { |
| results[i] = Objects.toString(args[i]); |
| } |
| return results; |
| } |
| |
| static void putValuesToCursor(ContentValues values, MatrixCursor cursor) { |
| final RowBuilder row = cursor.newRow(); |
| for (final String name : cursor.getColumnNames()) { |
| row.add(values.get(name)); |
| } |
| } |
| |
| private static String getIdList(Set<String> ids) { |
| String result = "("; |
| for (final String id : ids) { |
| if (result.length() > 1) { |
| result += ","; |
| } |
| result += id; |
| } |
| result += ")"; |
| return result; |
| } |
| } |
