mirror of
https://github.com/oxen-io/session-android.git
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280 lines
10 KiB
Java
280 lines
10 KiB
Java
/**
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* Copyright (C) 2011 Whisper Systems
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.thoughtcrime.securesms.database;
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import android.content.Context;
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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.SQLiteException;
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import android.database.sqlite.SQLiteStatement;
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import android.net.Uri;
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import android.util.Log;
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import org.thoughtcrime.securesms.crypto.MasterCipher;
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import org.thoughtcrime.securesms.crypto.MasterSecret;
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import org.thoughtcrime.securesms.recipients.RecipientFactory;
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import org.thoughtcrime.securesms.recipients.RecipientFormattingException;
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import org.thoughtcrime.securesms.recipients.Recipients;
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import java.util.StringTokenizer;
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public class SmsMigrator {
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private static final String TAG = SmsMigrator.class.getSimpleName();
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private static void addEncryptedStringToStatement(Context context, SQLiteStatement statement,
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Cursor cursor, MasterSecret masterSecret,
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int index, String key)
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{
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int columnIndex = cursor.getColumnIndexOrThrow(key);
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if (cursor.isNull(columnIndex)) {
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statement.bindNull(index);
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} else {
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statement.bindString(index, encrypt(masterSecret, cursor.getString(columnIndex)));
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}
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}
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private static void addStringToStatement(SQLiteStatement statement, Cursor cursor,
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int index, String key)
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{
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int columnIndex = cursor.getColumnIndexOrThrow(key);
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if (cursor.isNull(columnIndex)) {
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statement.bindNull(index);
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} else {
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statement.bindString(index, cursor.getString(columnIndex));
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}
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}
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private static void addIntToStatement(SQLiteStatement statement, Cursor cursor,
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int index, String key)
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{
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int columnIndex = cursor.getColumnIndexOrThrow(key);
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if (cursor.isNull(columnIndex)) {
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statement.bindNull(index);
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} else {
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statement.bindLong(index, cursor.getLong(columnIndex));
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}
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}
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private static void addTranslatedTypeToStatement(SQLiteStatement statement, Cursor cursor,
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int index, String key)
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{
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int columnIndex = cursor.getColumnIndexOrThrow(key);
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if (cursor.isNull(columnIndex)) {
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statement.bindLong(index, SmsDatabase.Types.BASE_INBOX_TYPE | SmsDatabase.Types.ENCRYPTION_SYMMETRIC_BIT);
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} else {
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long theirType = cursor.getLong(columnIndex);
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statement.bindLong(index, SmsDatabase.Types.translateFromSystemBaseType(theirType) | SmsDatabase.Types.ENCRYPTION_SYMMETRIC_BIT);
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}
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}
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private static boolean isAppropriateTypeForMigration(Cursor cursor, int columnIndex) {
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long systemType = cursor.getLong(columnIndex);
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long ourType = SmsDatabase.Types.translateFromSystemBaseType(systemType);
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return ourType == MmsSmsColumns.Types.BASE_INBOX_TYPE ||
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ourType == MmsSmsColumns.Types.BASE_SENT_TYPE ||
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ourType == MmsSmsColumns.Types.BASE_SENT_FAILED_TYPE;
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}
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private static void getContentValuesForRow(Context context, MasterSecret masterSecret,
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Cursor cursor, long threadId,
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SQLiteStatement statement)
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{
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addStringToStatement(statement, cursor, 1, SmsDatabase.ADDRESS);
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addIntToStatement(statement, cursor, 2, SmsDatabase.PERSON);
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addIntToStatement(statement, cursor, 3, SmsDatabase.DATE_RECEIVED);
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addIntToStatement(statement, cursor, 4, SmsDatabase.DATE_RECEIVED);
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addIntToStatement(statement, cursor, 5, SmsDatabase.PROTOCOL);
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addIntToStatement(statement, cursor, 6, SmsDatabase.READ);
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addIntToStatement(statement, cursor, 7, SmsDatabase.STATUS);
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addTranslatedTypeToStatement(statement, cursor, 8, SmsDatabase.TYPE);
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addIntToStatement(statement, cursor, 9, SmsDatabase.REPLY_PATH_PRESENT);
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addStringToStatement(statement, cursor, 10, SmsDatabase.SUBJECT);
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addEncryptedStringToStatement(context, statement, cursor, masterSecret, 11, SmsDatabase.BODY);
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addStringToStatement(statement, cursor, 12, SmsDatabase.SERVICE_CENTER);
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statement.bindLong(13, threadId);
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}
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private static String getTheirCanonicalAddress(Context context, String theirRecipientId) {
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Uri uri = Uri.parse("content://mms-sms/canonical-address/" + theirRecipientId);
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Cursor cursor = null;
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try {
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cursor = context.getContentResolver().query(uri, null, null, null, null);
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if (cursor != null && cursor.moveToFirst()) {
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return cursor.getString(0);
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} else {
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return null;
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}
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} catch (IllegalStateException iae) {
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Log.w("SmsMigrator", iae);
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return null;
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} finally {
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if (cursor != null)
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cursor.close();
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}
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}
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private static Recipients getOurRecipients(Context context, String theirRecipients) {
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StringTokenizer tokenizer = new StringTokenizer(theirRecipients.trim(), " ");
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StringBuilder sb = new StringBuilder();
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while (tokenizer.hasMoreTokens()) {
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String theirRecipientId = tokenizer.nextToken();
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String address = getTheirCanonicalAddress(context, theirRecipientId);
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if (address == null)
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continue;
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if (sb.length() != 0)
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sb.append(',');
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sb.append(address);
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}
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if (sb.length() == 0) return null;
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else return RecipientFactory.getRecipientsFromString(context, sb.toString(), true);
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}
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private static String encrypt(MasterSecret masterSecret, String body)
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{
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MasterCipher masterCipher = new MasterCipher(masterSecret);
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return masterCipher.encryptBody(body);
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}
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private static void migrateConversation(Context context, MasterSecret masterSecret,
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SmsMigrationProgressListener listener,
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ProgressDescription progress,
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long theirThreadId, long ourThreadId)
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{
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SmsDatabase ourSmsDatabase = DatabaseFactory.getSmsDatabase(context);
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Cursor cursor = null;
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try {
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Uri uri = Uri.parse("content://sms/conversations/" + theirThreadId);
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try {
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cursor = context.getContentResolver().query(uri, null, null, null, null);
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} catch (SQLiteException e) {
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/// Work around for weird sony-specific (?) bug: #4309
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Log.w(TAG, e);
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return;
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}
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SQLiteDatabase transaction = ourSmsDatabase.beginTransaction();
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SQLiteStatement statement = ourSmsDatabase.createInsertStatement(transaction);
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while (cursor != null && cursor.moveToNext()) {
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int typeColumn = cursor.getColumnIndex(SmsDatabase.TYPE);
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if (cursor.isNull(typeColumn) || isAppropriateTypeForMigration(cursor, typeColumn)) {
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getContentValuesForRow(context, masterSecret, cursor, ourThreadId, statement);
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statement.execute();
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}
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listener.progressUpdate(new ProgressDescription(progress, cursor.getCount(), cursor.getPosition()));
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}
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ourSmsDatabase.endTransaction(transaction);
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DatabaseFactory.getThreadDatabase(context).update(ourThreadId);
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DatabaseFactory.getThreadDatabase(context).notifyConversationListeners(ourThreadId);
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} finally {
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if (cursor != null)
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cursor.close();
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}
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}
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public static void migrateDatabase(Context context,
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MasterSecret masterSecret,
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SmsMigrationProgressListener listener)
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{
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// if (context.getSharedPreferences("SecureSMS", Context.MODE_PRIVATE).getBoolean("migrated", false))
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// return;
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ThreadDatabase threadDatabase = DatabaseFactory.getThreadDatabase(context);
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Cursor cursor = null;
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try {
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Uri threadListUri = Uri.parse("content://mms-sms/conversations?simple=true");
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cursor = context.getContentResolver().query(threadListUri, null, null, null, "date ASC");
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while (cursor != null && cursor.moveToNext()) {
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long theirThreadId = cursor.getLong(cursor.getColumnIndexOrThrow("_id"));
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String theirRecipients = cursor.getString(cursor.getColumnIndexOrThrow("recipient_ids"));
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Recipients ourRecipients = getOurRecipients(context, theirRecipients);
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ProgressDescription progress = new ProgressDescription(cursor.getCount(), cursor.getPosition(), 100, 0);
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if (ourRecipients != null) {
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long ourThreadId = threadDatabase.getThreadIdFor(ourRecipients);
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migrateConversation(context, masterSecret,
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listener, progress,
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theirThreadId, ourThreadId);
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}
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progress.incrementPrimaryComplete();
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listener.progressUpdate(progress);
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}
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} finally {
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if (cursor != null)
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cursor.close();
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}
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context.getSharedPreferences("SecureSMS", Context.MODE_PRIVATE).edit()
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.putBoolean("migrated", true).apply();
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}
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public interface SmsMigrationProgressListener {
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public void progressUpdate(ProgressDescription description);
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}
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public static class ProgressDescription {
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public final int primaryTotal;
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public int primaryComplete;
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public final int secondaryTotal;
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public final int secondaryComplete;
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public ProgressDescription(int primaryTotal, int primaryComplete,
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int secondaryTotal, int secondaryComplete)
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{
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this.primaryTotal = primaryTotal;
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this.primaryComplete = primaryComplete;
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this.secondaryTotal = secondaryTotal;
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this.secondaryComplete = secondaryComplete;
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}
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public ProgressDescription(ProgressDescription that, int secondaryTotal, int secondaryComplete) {
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this.primaryComplete = that.primaryComplete;
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this.primaryTotal = that.primaryTotal;
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this.secondaryComplete = secondaryComplete;
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this.secondaryTotal = secondaryTotal;
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}
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public void incrementPrimaryComplete() {
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primaryComplete += 1;
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}
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}
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}
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