private DisplayRecord.Body getPlaintextBody(Cursor cursor) {
try {
long type = cursor.getLong(cursor.getColumnIndexOrThrow(ThreadDatabase.SNIPPET_TYPE));
String body = cursor.getString(cursor.getColumnIndexOrThrow(SNIPPET));
if (!TextUtils.isEmpty(body)
&& masterCipher != null
&& MmsSmsColumns.Types.isSymmetricEncryption(type)) {
return new DisplayRecord.Body(masterCipher.decryptBody(body), true);
} else if (!TextUtils.isEmpty(body)
&& masterCipher == null
&& MmsSmsColumns.Types.isSymmetricEncryption(type)) {
return new DisplayRecord.Body(body, false);
} else {
return new DisplayRecord.Body(body, true);
}
} catch (InvalidMessageException e) {
Log.w("ThreadDatabase", e);
return new DisplayRecord.Body(
context.getString(R.string.ThreadDatabase_error_decrypting_message), true);
}
}
private static void exportPlaintext(Context context, MasterSecret masterSecret)
throws IOException {
int count = DatabaseFactory.getSmsDatabase(context).getMessageCount();
XmlBackup.Writer writer = new XmlBackup.Writer(getPlaintextExportDirectoryPath(), count);
SmsMessageRecord record;
EncryptingSmsDatabase.Reader reader = null;
int skip = 0;
int ROW_LIMIT = 500;
do {
if (reader != null) reader.close();
reader =
DatabaseFactory.getEncryptingSmsDatabase(context)
.getMessages(masterSecret, skip, ROW_LIMIT);
while ((record = reader.getNext()) != null) {
XmlBackup.XmlBackupItem item =
new XmlBackup.XmlBackupItem(
0,
record.getIndividualRecipient().getNumber(),
record.getDateReceived(),
MmsSmsColumns.Types.translateToSystemBaseType(record.getType()),
null,
record.getDisplayBody().toString(),
null,
1,
record.getDeliveryStatus());
writer.writeItem(item);
}
skip += ROW_LIMIT;
} while (reader.getCount() > 0);
writer.close();
}
