758f97e46d
When an app's data is cleared, or it's uninstalled, remove any persisted stacks. Bug: 11355566 Change-Id: I4e5cf0ec710591ad62f1ad52c2e358616631af41
366 lines
15 KiB
Java
366 lines
15 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.documentsui;
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import static com.android.documentsui.model.DocumentInfo.getCursorString;
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import android.content.ContentProvider;
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import android.content.ContentResolver;
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import android.content.ContentValues;
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import android.content.Context;
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import android.content.Intent;
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import android.content.UriMatcher;
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import android.content.pm.ResolveInfo;
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import android.database.Cursor;
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import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteOpenHelper;
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import android.net.Uri;
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import android.os.Bundle;
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import android.provider.DocumentsContract;
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import android.provider.DocumentsContract.Document;
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import android.provider.DocumentsContract.Root;
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import android.text.format.DateUtils;
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import android.util.Log;
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import com.android.documentsui.model.DocumentStack;
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import com.android.documentsui.model.DurableUtils;
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import com.android.internal.util.Predicate;
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import com.google.android.collect.Sets;
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import libcore.io.IoUtils;
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import java.io.IOException;
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import java.util.Set;
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public class RecentsProvider extends ContentProvider {
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private static final String TAG = "RecentsProvider";
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private static final long MAX_HISTORY_IN_MILLIS = 45 * DateUtils.DAY_IN_MILLIS;
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private static final String AUTHORITY = "com.android.documentsui.recents";
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private static final UriMatcher sMatcher = new UriMatcher(UriMatcher.NO_MATCH);
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private static final int URI_RECENT = 1;
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private static final int URI_STATE = 2;
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private static final int URI_RESUME = 3;
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public static final String METHOD_PURGE = "purge";
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public static final String METHOD_PURGE_PACKAGE = "purgePackage";
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static {
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sMatcher.addURI(AUTHORITY, "recent", URI_RECENT);
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// state/authority/rootId/docId
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sMatcher.addURI(AUTHORITY, "state/*/*/*", URI_STATE);
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// resume/packageName
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sMatcher.addURI(AUTHORITY, "resume/*", URI_RESUME);
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}
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public static final String TABLE_RECENT = "recent";
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public static final String TABLE_STATE = "state";
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public static final String TABLE_RESUME = "resume";
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public static class RecentColumns {
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public static final String KEY = "key";
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public static final String STACK = "stack";
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public static final String TIMESTAMP = "timestamp";
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}
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public static class StateColumns {
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public static final String AUTHORITY = "authority";
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public static final String ROOT_ID = Root.COLUMN_ROOT_ID;
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public static final String DOCUMENT_ID = Document.COLUMN_DOCUMENT_ID;
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public static final String MODE = "mode";
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public static final String SORT_ORDER = "sortOrder";
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}
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public static class ResumeColumns {
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public static final String PACKAGE_NAME = "package_name";
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public static final String STACK = "stack";
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public static final String TIMESTAMP = "timestamp";
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public static final String EXTERNAL = "external";
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}
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public static Uri buildRecent() {
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return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT)
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.authority(AUTHORITY).appendPath("recent").build();
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}
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public static Uri buildState(String authority, String rootId, String documentId) {
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return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT).authority(AUTHORITY)
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.appendPath("state").appendPath(authority).appendPath(rootId).appendPath(documentId)
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.build();
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}
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public static Uri buildResume(String packageName) {
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return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT)
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.authority(AUTHORITY).appendPath("resume").appendPath(packageName).build();
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}
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private DatabaseHelper mHelper;
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private static class DatabaseHelper extends SQLiteOpenHelper {
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private static final String DB_NAME = "recents.db";
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private static final int VERSION_INIT = 1;
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private static final int VERSION_AS_BLOB = 3;
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private static final int VERSION_ADD_EXTERNAL = 4;
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private static final int VERSION_ADD_RECENT_KEY = 5;
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public DatabaseHelper(Context context) {
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super(context, DB_NAME, null, VERSION_ADD_RECENT_KEY);
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}
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@Override
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public void onCreate(SQLiteDatabase db) {
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db.execSQL("CREATE TABLE " + TABLE_RECENT + " (" +
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RecentColumns.KEY + " TEXT PRIMARY KEY ON CONFLICT REPLACE," +
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RecentColumns.STACK + " BLOB DEFAULT NULL," +
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RecentColumns.TIMESTAMP + " INTEGER" +
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")");
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db.execSQL("CREATE TABLE " + TABLE_STATE + " (" +
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StateColumns.AUTHORITY + " TEXT," +
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StateColumns.ROOT_ID + " TEXT," +
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StateColumns.DOCUMENT_ID + " TEXT," +
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StateColumns.MODE + " INTEGER," +
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StateColumns.SORT_ORDER + " INTEGER," +
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"PRIMARY KEY (" + StateColumns.AUTHORITY + ", " + StateColumns.ROOT_ID + ", "
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+ StateColumns.DOCUMENT_ID + ")" +
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")");
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db.execSQL("CREATE TABLE " + TABLE_RESUME + " (" +
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ResumeColumns.PACKAGE_NAME + " TEXT NOT NULL PRIMARY KEY," +
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ResumeColumns.STACK + " BLOB DEFAULT NULL," +
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ResumeColumns.TIMESTAMP + " INTEGER," +
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ResumeColumns.EXTERNAL + " INTEGER NOT NULL DEFAULT 0" +
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")");
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}
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@Override
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
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Log.w(TAG, "Upgrading database; wiping app data");
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db.execSQL("DROP TABLE IF EXISTS " + TABLE_RECENT);
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db.execSQL("DROP TABLE IF EXISTS " + TABLE_STATE);
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db.execSQL("DROP TABLE IF EXISTS " + TABLE_RESUME);
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onCreate(db);
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}
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}
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@Override
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public boolean onCreate() {
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mHelper = new DatabaseHelper(getContext());
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return true;
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}
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@Override
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public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
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String sortOrder) {
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final SQLiteDatabase db = mHelper.getReadableDatabase();
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switch (sMatcher.match(uri)) {
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case URI_RECENT:
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final long cutoff = System.currentTimeMillis() - MAX_HISTORY_IN_MILLIS;
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return db.query(TABLE_RECENT, projection, RecentColumns.TIMESTAMP + ">" + cutoff,
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null, null, null, sortOrder);
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case URI_STATE:
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final String authority = uri.getPathSegments().get(1);
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final String rootId = uri.getPathSegments().get(2);
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final String documentId = uri.getPathSegments().get(3);
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return db.query(TABLE_STATE, projection, StateColumns.AUTHORITY + "=? AND "
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+ StateColumns.ROOT_ID + "=? AND " + StateColumns.DOCUMENT_ID + "=?",
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new String[] { authority, rootId, documentId }, null, null, sortOrder);
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case URI_RESUME:
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final String packageName = uri.getPathSegments().get(1);
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return db.query(TABLE_RESUME, projection, ResumeColumns.PACKAGE_NAME + "=?",
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new String[] { packageName }, null, null, sortOrder);
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default:
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throw new UnsupportedOperationException("Unsupported Uri " + uri);
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}
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}
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@Override
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public String getType(Uri uri) {
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return null;
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}
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@Override
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public Uri insert(Uri uri, ContentValues values) {
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final SQLiteDatabase db = mHelper.getWritableDatabase();
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final ContentValues key = new ContentValues();
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switch (sMatcher.match(uri)) {
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case URI_RECENT:
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values.put(RecentColumns.TIMESTAMP, System.currentTimeMillis());
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db.insert(TABLE_RECENT, null, values);
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final long cutoff = System.currentTimeMillis() - MAX_HISTORY_IN_MILLIS;
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db.delete(TABLE_RECENT, RecentColumns.TIMESTAMP + "<" + cutoff, null);
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return uri;
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case URI_STATE:
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final String authority = uri.getPathSegments().get(1);
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final String rootId = uri.getPathSegments().get(2);
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final String documentId = uri.getPathSegments().get(3);
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key.put(StateColumns.AUTHORITY, authority);
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key.put(StateColumns.ROOT_ID, rootId);
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key.put(StateColumns.DOCUMENT_ID, documentId);
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// Ensure that row exists, then update with changed values
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db.insertWithOnConflict(TABLE_STATE, null, key, SQLiteDatabase.CONFLICT_IGNORE);
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db.update(TABLE_STATE, values, StateColumns.AUTHORITY + "=? AND "
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+ StateColumns.ROOT_ID + "=? AND " + StateColumns.DOCUMENT_ID + "=?",
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new String[] { authority, rootId, documentId });
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return uri;
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case URI_RESUME:
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values.put(ResumeColumns.TIMESTAMP, System.currentTimeMillis());
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final String packageName = uri.getPathSegments().get(1);
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key.put(ResumeColumns.PACKAGE_NAME, packageName);
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// Ensure that row exists, then update with changed values
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db.insertWithOnConflict(TABLE_RESUME, null, key, SQLiteDatabase.CONFLICT_IGNORE);
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db.update(TABLE_RESUME, values, ResumeColumns.PACKAGE_NAME + "=?",
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new String[] { packageName });
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return uri;
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default:
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throw new UnsupportedOperationException("Unsupported Uri " + uri);
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}
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}
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@Override
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public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
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throw new UnsupportedOperationException("Unsupported Uri " + uri);
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}
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@Override
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public int delete(Uri uri, String selection, String[] selectionArgs) {
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throw new UnsupportedOperationException("Unsupported Uri " + uri);
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}
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@Override
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public Bundle call(String method, String arg, Bundle extras) {
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if (METHOD_PURGE.equals(method)) {
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// Purge references to unknown authorities
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final Intent intent = new Intent(DocumentsContract.PROVIDER_INTERFACE);
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final Set<String> knownAuth = Sets.newHashSet();
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for (ResolveInfo info : getContext()
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.getPackageManager().queryIntentContentProviders(intent, 0)) {
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knownAuth.add(info.providerInfo.authority);
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}
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purgeByAuthority(new Predicate<String>() {
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@Override
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public boolean apply(String authority) {
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// Purge unknown authorities
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return !knownAuth.contains(authority);
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}
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});
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return null;
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} else if (METHOD_PURGE_PACKAGE.equals(method)) {
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// Purge references to authorities in given package
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final Intent intent = new Intent(DocumentsContract.PROVIDER_INTERFACE);
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intent.setPackage(arg);
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final Set<String> packageAuth = Sets.newHashSet();
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for (ResolveInfo info : getContext()
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.getPackageManager().queryIntentContentProviders(intent, 0)) {
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packageAuth.add(info.providerInfo.authority);
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}
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if (!packageAuth.isEmpty()) {
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purgeByAuthority(new Predicate<String>() {
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@Override
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public boolean apply(String authority) {
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// Purge authority matches
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return packageAuth.contains(authority);
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}
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});
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}
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return null;
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} else {
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return super.call(method, arg, extras);
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}
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}
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/**
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* Purge all internal data whose authority matches the given
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* {@link Predicate}.
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*/
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private void purgeByAuthority(Predicate<String> predicate) {
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final SQLiteDatabase db = mHelper.getWritableDatabase();
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final DocumentStack stack = new DocumentStack();
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Cursor cursor = db.query(TABLE_RECENT, null, null, null, null, null, null);
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try {
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while (cursor.moveToNext()) {
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try {
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final byte[] rawStack = cursor.getBlob(
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cursor.getColumnIndex(RecentColumns.STACK));
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DurableUtils.readFromArray(rawStack, stack);
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if (stack.root != null && predicate.apply(stack.root.authority)) {
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final String key = getCursorString(cursor, RecentColumns.KEY);
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db.delete(TABLE_RECENT, RecentColumns.KEY + "=?", new String[] { key });
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}
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} catch (IOException ignored) {
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}
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}
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} finally {
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IoUtils.closeQuietly(cursor);
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}
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cursor = db.query(TABLE_STATE, new String[] {
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StateColumns.AUTHORITY }, null, null, StateColumns.AUTHORITY, null, null);
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try {
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while (cursor.moveToNext()) {
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final String authority = getCursorString(cursor, StateColumns.AUTHORITY);
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if (predicate.apply(authority)) {
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db.delete(TABLE_STATE, StateColumns.AUTHORITY + "=?", new String[] {
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authority });
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Log.d(TAG, "Purged state for " + authority);
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}
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}
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} finally {
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IoUtils.closeQuietly(cursor);
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}
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cursor = db.query(TABLE_RESUME, null, null, null, null, null, null);
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try {
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while (cursor.moveToNext()) {
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try {
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final byte[] rawStack = cursor.getBlob(
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cursor.getColumnIndex(ResumeColumns.STACK));
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DurableUtils.readFromArray(rawStack, stack);
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if (stack.root != null && predicate.apply(stack.root.authority)) {
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final String packageName = getCursorString(
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cursor, ResumeColumns.PACKAGE_NAME);
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db.delete(TABLE_RESUME, ResumeColumns.PACKAGE_NAME + "=?",
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new String[] { packageName });
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}
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} catch (IOException ignored) {
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}
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}
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} finally {
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IoUtils.closeQuietly(cursor);
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}
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}
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}
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