Master of Science thesis Fighting Spam

* should be deleted.
*/
public boolean keepMail(MimeMessage message)
{
try
{
try
{
//MimeTools.writeMimeFile(message,"d:\\incomingstart.msg");
Debugger.debug(getClass(), 1, "Testing if it is a notificationmail....");
String[] note = message.getHeader(Config.headerNotificationName);
if(note == null || note.length == 0)
throw new Exception("Could not read notificationinfo.");
try
{
Debugger.debug(getClass(), 1, "It is a notificationmail.");
NotificationHeader header =
(NotificationHeader)MimeTools.getCoinsHeader(message);
long serial = header.serialNumber;
//Verify signature...
Fingerprint hash = Coin.getHash2(header.serialNumber,
(message.getRecipients(Message.RecipientType.TO)[0]).toString());
if(Cryptotools.verify((RSAPublicKey)control.getCertificate().getPublicKey(),header.getSig
nature(),hash))
{
Debugger.debug(getClass(), 1, "Verifying signature...success");
if(control.deleteCoinWithSerial(header.serialNumber))
{
Debugger.debug(getClass(), 1, "C-coin deleted
successfully.");
}
else
{
Debugger.debug(getClass(), 1, "Could not delete C-coin.");
}
}
else
Debugger.debug(getClass(), 1, "Verifying signature...failed");
return false;
}
catch(Exception ex)
{
Debugger.debug(getClass(), 3, "Error reading notificationdata.",ex);
return false;
}
}
catch(Exception ex)
{
Debugger.debug(getClass(), 3, "Error handling notificationmail.",ex);
}
Debugger.debug(getClass(), 1, "It is NOT a notificationmail.");
String[] from = message.getHeader("From");
if(from.length > 1)
{
Debugger.debug(getClass(), 1,
"FATAL! more than one sender. Unable to filter mail
correctly. Deleting mail!");
return false;
}
//If the sender is on the whitelist we should keep the mail.
if(control.isOnWhitelist(from[0]))
{
266