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# Copyright (c) Twisted Matrix Laboratories. # See LICENSE for details. """The Finger User Information Protocol (RFC 1288)""" from twisted.protocols import basic class Finger(basic.LineReceiver): def lineReceived(self, line): parts = line.split() if not parts: parts = [b""] if len(parts) == 1: slash_w = 0 else: slash_w = 1 user = parts[-1] if b"@" in user: hostPlace = user.rfind(b"@") user = user[:hostPlace] host = user[hostPlace + 1 :] return self.forwardQuery(slash_w, user, host) if user: return self.getUser(slash_w, user) else: return self.getDomain(slash_w) def _refuseMessage(self, message): self.transport.write(message + b"\n") self.transport.loseConnection() def forwardQuery(self, slash_w, user, host): self._refuseMessage(b"Finger forwarding service denied") def getDomain(self, slash_w): self._refuseMessage(b"Finger online list denied") def getUser(self, slash_w, user): self.transport.write(b"Login: " + user + b"\n") self._refuseMessage(b"No such user")