| /* |
| * Copyright (C) 2013 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.documentsui; |
| |
| import static com.android.documentsui.model.DocumentInfo.getCursorString; |
| |
| import android.content.ContentProvider; |
| import android.content.ContentResolver; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.UriMatcher; |
| import android.content.pm.ResolveInfo; |
| import android.database.Cursor; |
| import android.database.sqlite.SQLiteDatabase; |
| import android.database.sqlite.SQLiteOpenHelper; |
| import android.net.Uri; |
| import android.os.Bundle; |
| import android.provider.DocumentsContract; |
| import android.provider.DocumentsContract.Document; |
| import android.provider.DocumentsContract.Root; |
| import android.text.format.DateUtils; |
| import android.util.Log; |
| |
| import com.android.documentsui.model.DocumentStack; |
| import com.android.documentsui.model.DurableUtils; |
| import com.android.internal.util.Predicate; |
| import com.google.android.collect.Sets; |
| |
| import libcore.io.IoUtils; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| |
| public class RecentsProvider extends ContentProvider { |
| private static final String TAG = "RecentsProvider"; |
| |
| private static final long MAX_HISTORY_IN_MILLIS = 45 * DateUtils.DAY_IN_MILLIS; |
| |
| private static final String AUTHORITY = "com.android.documentsui.recents"; |
| |
| private static final UriMatcher sMatcher = new UriMatcher(UriMatcher.NO_MATCH); |
| |
| private static final int URI_RECENT = 1; |
| private static final int URI_STATE = 2; |
| private static final int URI_RESUME = 3; |
| |
| public static final String METHOD_PURGE = "purge"; |
| public static final String METHOD_PURGE_PACKAGE = "purgePackage"; |
| |
| static { |
| sMatcher.addURI(AUTHORITY, "recent", URI_RECENT); |
| // state/authority/rootId/docId |
| sMatcher.addURI(AUTHORITY, "state/*/*/*", URI_STATE); |
| // resume/packageName |
| sMatcher.addURI(AUTHORITY, "resume/*", URI_RESUME); |
| } |
| |
| public static final String TABLE_RECENT = "recent"; |
| public static final String TABLE_STATE = "state"; |
| public static final String TABLE_RESUME = "resume"; |
| |
| public static class RecentColumns { |
| public static final String KEY = "key"; |
| public static final String STACK = "stack"; |
| public static final String TIMESTAMP = "timestamp"; |
| } |
| |
| public static class StateColumns { |
| public static final String AUTHORITY = "authority"; |
| public static final String ROOT_ID = Root.COLUMN_ROOT_ID; |
| public static final String DOCUMENT_ID = Document.COLUMN_DOCUMENT_ID; |
| public static final String MODE = "mode"; |
| public static final String SORT_ORDER = "sortOrder"; |
| } |
| |
| public static class ResumeColumns { |
| public static final String PACKAGE_NAME = "package_name"; |
| public static final String STACK = "stack"; |
| public static final String TIMESTAMP = "timestamp"; |
| public static final String EXTERNAL = "external"; |
| } |
| |
| public static Uri buildRecent() { |
| return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT) |
| .authority(AUTHORITY).appendPath("recent").build(); |
| } |
| |
| public static Uri buildState(String authority, String rootId, String documentId) { |
| return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT).authority(AUTHORITY) |
| .appendPath("state").appendPath(authority).appendPath(rootId).appendPath(documentId) |
| .build(); |
| } |
| |
| public static Uri buildResume(String packageName) { |
| return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT) |
| .authority(AUTHORITY).appendPath("resume").appendPath(packageName).build(); |
| } |
| |
| private DatabaseHelper mHelper; |
| |
| private static class DatabaseHelper extends SQLiteOpenHelper { |
| private static final String DB_NAME = "recents.db"; |
| |
| private static final int VERSION_INIT = 1; |
| private static final int VERSION_AS_BLOB = 3; |
| private static final int VERSION_ADD_EXTERNAL = 4; |
| private static final int VERSION_ADD_RECENT_KEY = 5; |
| |
| public DatabaseHelper(Context context) { |
| super(context, DB_NAME, null, VERSION_ADD_RECENT_KEY); |
| } |
| |
| @Override |
| public void onCreate(SQLiteDatabase db) { |
| |
| db.execSQL("CREATE TABLE " + TABLE_RECENT + " (" + |
| RecentColumns.KEY + " TEXT PRIMARY KEY ON CONFLICT REPLACE," + |
| RecentColumns.STACK + " BLOB DEFAULT NULL," + |
| RecentColumns.TIMESTAMP + " INTEGER" + |
| ")"); |
| |
| db.execSQL("CREATE TABLE " + TABLE_STATE + " (" + |
| StateColumns.AUTHORITY + " TEXT," + |
| StateColumns.ROOT_ID + " TEXT," + |
| StateColumns.DOCUMENT_ID + " TEXT," + |
| StateColumns.MODE + " INTEGER," + |
| StateColumns.SORT_ORDER + " INTEGER," + |
| "PRIMARY KEY (" + StateColumns.AUTHORITY + ", " + StateColumns.ROOT_ID + ", " |
| + StateColumns.DOCUMENT_ID + ")" + |
| ")"); |
| |
| db.execSQL("CREATE TABLE " + TABLE_RESUME + " (" + |
| ResumeColumns.PACKAGE_NAME + " TEXT NOT NULL PRIMARY KEY," + |
| ResumeColumns.STACK + " BLOB DEFAULT NULL," + |
| ResumeColumns.TIMESTAMP + " INTEGER," + |
| ResumeColumns.EXTERNAL + " INTEGER NOT NULL DEFAULT 0" + |
| ")"); |
| } |
| |
| @Override |
| public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { |
| Log.w(TAG, "Upgrading database; wiping app data"); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_RECENT); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_STATE); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_RESUME); |
| onCreate(db); |
| } |
| } |
| |
| @Override |
| public boolean onCreate() { |
| mHelper = new DatabaseHelper(getContext()); |
| return true; |
| } |
| |
| @Override |
| public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, |
| String sortOrder) { |
| final SQLiteDatabase db = mHelper.getReadableDatabase(); |
| switch (sMatcher.match(uri)) { |
| case URI_RECENT: |
| final long cutoff = System.currentTimeMillis() - MAX_HISTORY_IN_MILLIS; |
| return db.query(TABLE_RECENT, projection, RecentColumns.TIMESTAMP + ">" + cutoff, |
| null, null, null, sortOrder); |
| case URI_STATE: |
| final String authority = uri.getPathSegments().get(1); |
| final String rootId = uri.getPathSegments().get(2); |
| final String documentId = uri.getPathSegments().get(3); |
| return db.query(TABLE_STATE, projection, StateColumns.AUTHORITY + "=? AND " |
| + StateColumns.ROOT_ID + "=? AND " + StateColumns.DOCUMENT_ID + "=?", |
| new String[] { authority, rootId, documentId }, null, null, sortOrder); |
| case URI_RESUME: |
| final String packageName = uri.getPathSegments().get(1); |
| return db.query(TABLE_RESUME, projection, ResumeColumns.PACKAGE_NAME + "=?", |
| new String[] { packageName }, null, null, sortOrder); |
| default: |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| } |
| |
| @Override |
| public String getType(Uri uri) { |
| return null; |
| } |
| |
| @Override |
| public Uri insert(Uri uri, ContentValues values) { |
| final SQLiteDatabase db = mHelper.getWritableDatabase(); |
| final ContentValues key = new ContentValues(); |
| switch (sMatcher.match(uri)) { |
| case URI_RECENT: |
| values.put(RecentColumns.TIMESTAMP, System.currentTimeMillis()); |
| db.insert(TABLE_RECENT, null, values); |
| final long cutoff = System.currentTimeMillis() - MAX_HISTORY_IN_MILLIS; |
| db.delete(TABLE_RECENT, RecentColumns.TIMESTAMP + "<" + cutoff, null); |
| return uri; |
| case URI_STATE: |
| final String authority = uri.getPathSegments().get(1); |
| final String rootId = uri.getPathSegments().get(2); |
| final String documentId = uri.getPathSegments().get(3); |
| |
| key.put(StateColumns.AUTHORITY, authority); |
| key.put(StateColumns.ROOT_ID, rootId); |
| key.put(StateColumns.DOCUMENT_ID, documentId); |
| |
| // Ensure that row exists, then update with changed values |
| db.insertWithOnConflict(TABLE_STATE, null, key, SQLiteDatabase.CONFLICT_IGNORE); |
| db.update(TABLE_STATE, values, StateColumns.AUTHORITY + "=? AND " |
| + StateColumns.ROOT_ID + "=? AND " + StateColumns.DOCUMENT_ID + "=?", |
| new String[] { authority, rootId, documentId }); |
| |
| return uri; |
| case URI_RESUME: |
| values.put(ResumeColumns.TIMESTAMP, System.currentTimeMillis()); |
| |
| final String packageName = uri.getPathSegments().get(1); |
| key.put(ResumeColumns.PACKAGE_NAME, packageName); |
| |
| // Ensure that row exists, then update with changed values |
| db.insertWithOnConflict(TABLE_RESUME, null, key, SQLiteDatabase.CONFLICT_IGNORE); |
| db.update(TABLE_RESUME, values, ResumeColumns.PACKAGE_NAME + "=?", |
| new String[] { packageName }); |
| return uri; |
| default: |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| } |
| |
| @Override |
| public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| |
| @Override |
| public int delete(Uri uri, String selection, String[] selectionArgs) { |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| |
| @Override |
| public Bundle call(String method, String arg, Bundle extras) { |
| if (METHOD_PURGE.equals(method)) { |
| // Purge references to unknown authorities |
| final Intent intent = new Intent(DocumentsContract.PROVIDER_INTERFACE); |
| final Set<String> knownAuth = Sets.newHashSet(); |
| for (ResolveInfo info : getContext() |
| .getPackageManager().queryIntentContentProviders(intent, 0)) { |
| knownAuth.add(info.providerInfo.authority); |
| } |
| |
| purgeByAuthority(new Predicate<String>() { |
| @Override |
| public boolean apply(String authority) { |
| // Purge unknown authorities |
| return !knownAuth.contains(authority); |
| } |
| }); |
| |
| return null; |
| |
| } else if (METHOD_PURGE_PACKAGE.equals(method)) { |
| // Purge references to authorities in given package |
| final Intent intent = new Intent(DocumentsContract.PROVIDER_INTERFACE); |
| intent.setPackage(arg); |
| final Set<String> packageAuth = Sets.newHashSet(); |
| for (ResolveInfo info : getContext() |
| .getPackageManager().queryIntentContentProviders(intent, 0)) { |
| packageAuth.add(info.providerInfo.authority); |
| } |
| |
| if (!packageAuth.isEmpty()) { |
| purgeByAuthority(new Predicate<String>() { |
| @Override |
| public boolean apply(String authority) { |
| // Purge authority matches |
| return packageAuth.contains(authority); |
| } |
| }); |
| } |
| |
| return null; |
| |
| } else { |
| return super.call(method, arg, extras); |
| } |
| } |
| |
| /** |
| * Purge all internal data whose authority matches the given |
| * {@link Predicate}. |
| */ |
| private void purgeByAuthority(Predicate<String> predicate) { |
| final SQLiteDatabase db = mHelper.getWritableDatabase(); |
| final DocumentStack stack = new DocumentStack(); |
| |
| Cursor cursor = db.query(TABLE_RECENT, null, null, null, null, null, null); |
| try { |
| while (cursor.moveToNext()) { |
| try { |
| final byte[] rawStack = cursor.getBlob( |
| cursor.getColumnIndex(RecentColumns.STACK)); |
| DurableUtils.readFromArray(rawStack, stack); |
| |
| if (stack.root != null && predicate.apply(stack.root.authority)) { |
| final String key = getCursorString(cursor, RecentColumns.KEY); |
| db.delete(TABLE_RECENT, RecentColumns.KEY + "=?", new String[] { key }); |
| } |
| } catch (IOException ignored) { |
| } |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| } |
| |
| cursor = db.query(TABLE_STATE, new String[] { |
| StateColumns.AUTHORITY }, null, null, StateColumns.AUTHORITY, null, null); |
| try { |
| while (cursor.moveToNext()) { |
| final String authority = getCursorString(cursor, StateColumns.AUTHORITY); |
| if (predicate.apply(authority)) { |
| db.delete(TABLE_STATE, StateColumns.AUTHORITY + "=?", new String[] { |
| authority }); |
| Log.d(TAG, "Purged state for " + authority); |
| } |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| } |
| |
| cursor = db.query(TABLE_RESUME, null, null, null, null, null, null); |
| try { |
| while (cursor.moveToNext()) { |
| try { |
| final byte[] rawStack = cursor.getBlob( |
| cursor.getColumnIndex(ResumeColumns.STACK)); |
| DurableUtils.readFromArray(rawStack, stack); |
| |
| if (stack.root != null && predicate.apply(stack.root.authority)) { |
| final String packageName = getCursorString( |
| cursor, ResumeColumns.PACKAGE_NAME); |
| db.delete(TABLE_RESUME, ResumeColumns.PACKAGE_NAME + "=?", |
| new String[] { packageName }); |
| } |
| } catch (IOException ignored) { |
| } |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| } |
| } |
| } |