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package com.android.systemui.cm;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.DatabaseUtils;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteQueryBuilder;
import android.net.Uri;
import android.text.TextUtils;
import com.android.internal.util.cm.SpamFilter;
import com.android.internal.util.cm.SpamFilter.SpamContract.PackageTable;
import com.android.internal.util.cm.SpamFilter.SpamContract.NotificationTable;
public class SpamMessageProvider extends ContentProvider {
public static final String AUTHORITY = SpamFilter.AUTHORITY;
private static final String UPDATE_COUNT_QUERY =
"UPDATE " + NotificationTable.TABLE_NAME +
" SET " + NotificationTable.LAST_BLOCKED + "=%d," +
NotificationTable.COUNT + "=" + NotificationTable.COUNT + "+1 " +
" WHERE " + NotificationTable.ID + "='%s'";
private static final UriMatcher sURIMatcher = new UriMatcher(UriMatcher.NO_MATCH);
private static final int PACKAGES = 0;
private static final int MESSAGES = 1;
private static final int PACKAGE_FOR_ID = 2;
private static final int MESSAGE_UPDATE_COUNT = 3;
private static final int MESSAGE_FOR_ID = 4;
static {
sURIMatcher.addURI(AUTHORITY, "packages", PACKAGES);
sURIMatcher.addURI(AUTHORITY, "messages", MESSAGES);
sURIMatcher.addURI(AUTHORITY, "message/#", MESSAGE_FOR_ID);
sURIMatcher.addURI(AUTHORITY, "message/inc_count/#", MESSAGE_UPDATE_COUNT);
}
private SpamOpenHelper mDbHelper;
@Override
public boolean onCreate() {
mDbHelper = new SpamOpenHelper(getContext());
return true;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder) {
int match = sURIMatcher.match(uri);
switch (match) {
case PACKAGE_FOR_ID:
return mDbHelper.getReadableDatabase().query(PackageTable.TABLE_NAME,
new String[]{NotificationTable.ID}, PackageTable.PACKAGE_NAME + "=?",
new String[]{uri.getLastPathSegment()}, null, null, null);
case PACKAGES:
return mDbHelper.getReadableDatabase().query(PackageTable.TABLE_NAME,
projection, selection, selectionArgs, null, null, sortOrder);
case MESSAGES:
SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
qb.setTables(NotificationTable.TABLE_NAME + " LEFT OUTER JOIN " + PackageTable.TABLE_NAME +
" ON (" + NotificationTable.TABLE_NAME + "." + NotificationTable.PACKAGE_ID + " = "
+ PackageTable.TABLE_NAME + "." + PackageTable.ID + ")");
SQLiteDatabase db = mDbHelper.getReadableDatabase();
return qb.query(db, projection, selection, selectionArgs,
null, null, null);
case MESSAGE_FOR_ID:
qb = new SQLiteQueryBuilder();
qb.setTables(NotificationTable.TABLE_NAME + " LEFT OUTER JOIN " + PackageTable.TABLE_NAME +
" ON (" + NotificationTable.TABLE_NAME + "." + NotificationTable.PACKAGE_ID + " = "
+ PackageTable.TABLE_NAME + "." + PackageTable.ID + ")");
qb.appendWhere(NotificationTable.TABLE_NAME + "." + NotificationTable.ID + "="
+ uri.getLastPathSegment());
return qb.query(mDbHelper.getReadableDatabase(),
null, null, null, null,
null, null);
default:
return null;
}
}
private long getPackageId(String pkg) {
long rowId = -1;
Cursor idCursor = mDbHelper.getReadableDatabase().query(PackageTable.TABLE_NAME,
new String[]{NotificationTable.ID}, PackageTable.PACKAGE_NAME + "=?",
new String[]{pkg}, null, null, null);
if (idCursor != null) {
if (idCursor.moveToFirst()) {
rowId = idCursor.getLong(0);
}
idCursor.close();
}
return rowId;
}
@Override
public String getType(Uri uri) {
return null;
}
@Override
public Uri insert(Uri uri, ContentValues values) {
if (values == null) {
return null;
}
int match = sURIMatcher.match(uri);
switch (match) {
case MESSAGES:
String msgText = values.getAsString(NotificationTable.MESSAGE_TEXT);
String packageName = values.getAsString(PackageTable.PACKAGE_NAME);
if (TextUtils.isEmpty(msgText) || TextUtils.isEmpty(packageName)) {
return null;
}
values.clear();
values.put(PackageTable.PACKAGE_NAME, packageName);
long packageId = getPackageId(packageName);
if (packageId == -1) {
SQLiteDatabase writableDb = mDbHelper.getWritableDatabase();
packageId = writableDb.insert(
PackageTable.TABLE_NAME, null, values);
}
if (packageId != -1) {
values.clear();
values.put(NotificationTable.MESSAGE_TEXT, msgText);
values.put(NotificationTable.NORMALIZED_TEXT,
SpamFilter.getNormalizedContent(msgText));
values.put(NotificationTable.PACKAGE_ID, packageId);
values.put(NotificationTable.LAST_BLOCKED, System.currentTimeMillis());
long id = mDbHelper.getReadableDatabase().insert(NotificationTable.TABLE_NAME,
null, values);
if (id != -1) {
notifyChange(String.valueOf(id));
}
}
return null;
default:
return null;
}
}
private void notifyChange(String id) {
Uri uri = Uri.withAppendedPath(SpamFilter.NOTIFICATION_URI,
id);
getContext().getContentResolver().notifyChange(uri, null);
}
private void removePackageIfNecessary(int packageId) {
long numEntries = DatabaseUtils.queryNumEntries(mDbHelper.getReadableDatabase(),
NotificationTable.TABLE_NAME, NotificationTable.PACKAGE_ID + "=?",
new String[]{String.valueOf(packageId)});
if (numEntries == 0) {
SQLiteDatabase writableDb = mDbHelper.getWritableDatabase();
writableDb.delete(PackageTable.TABLE_NAME, PackageTable.ID + "=?",
new String[]{String.valueOf(packageId)});
}
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
int match = sURIMatcher.match(uri);
switch (match) {
case MESSAGE_FOR_ID:
int packageId = -1;
Cursor idCursor = mDbHelper.getReadableDatabase().query(NotificationTable.TABLE_NAME,
new String[]{NotificationTable.PACKAGE_ID}, NotificationTable.ID + "=?",
new String[]{uri.getLastPathSegment()}, null, null, null);
if (idCursor != null) {
if (idCursor.moveToFirst()) {
packageId = idCursor.getInt(0);
}
idCursor.close();
}
SQLiteDatabase writableDb = mDbHelper.getWritableDatabase();
String id = uri.getLastPathSegment();
int result = writableDb.delete(NotificationTable.TABLE_NAME,
NotificationTable.ID + "=?", new String[]{id});
removePackageIfNecessary(packageId);
if (result > 0) {
notifyChange(id);
}
return result;
default:
return 0;
}
}
@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
int match = sURIMatcher.match(uri);
switch (match) {
case MESSAGE_UPDATE_COUNT:
String id = uri.getLastPathSegment();
String formattedQuery = String.format(UPDATE_COUNT_QUERY,
System.currentTimeMillis(), id);
SQLiteDatabase writableDb = mDbHelper.getWritableDatabase();
writableDb.execSQL(formattedQuery);
notifyChange(id);
return 0;
default:
return 0;
}
}
}
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