RAHHH

backend/lib/python3.12/site-packages/twisted/protocols/wire.py

@@ -0,0 +1,112 @@
+# Copyright (c) Twisted Matrix Laboratories.
+# See LICENSE for details.
+
+"""Implement standard (and unused) TCP protocols.
+
+These protocols are either provided by inetd, or are not provided at all.
+"""
+
+
+import struct
+import time
+
+from zope.interface import implementer
+
+from twisted.internet import interfaces, protocol
+
+
+class Echo(protocol.Protocol):
+    """
+    As soon as any data is received, write it back (RFC 862).
+    """
+
+    def dataReceived(self, data):
+        self.transport.write(data)
+
+
+class Discard(protocol.Protocol):
+    """
+    Discard any received data (RFC 863).
+    """
+
+    def dataReceived(self, data):
+        # I'm ignoring you, nyah-nyah
+        pass
+
+
+@implementer(interfaces.IProducer)
+class Chargen(protocol.Protocol):
+    """
+    Generate repeating noise (RFC 864).
+    """
+
+    noise = rb'@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~ !"#$%&?'
+
+    def connectionMade(self):
+        self.transport.registerProducer(self, 0)
+
+    def resumeProducing(self):
+        self.transport.write(self.noise)
+
+    def pauseProducing(self):
+        pass
+
+    def stopProducing(self):
+        pass
+
+
+class QOTD(protocol.Protocol):
+    """
+    Return a quote of the day (RFC 865).
+    """
+
+    def connectionMade(self):
+        self.transport.write(self.getQuote())
+        self.transport.loseConnection()
+
+    def getQuote(self):
+        """
+        Return a quote. May be overrriden in subclasses.
+        """
+        return b"An apple a day keeps the doctor away.\r\n"
+
+
+class Who(protocol.Protocol):
+    """
+    Return list of active users (RFC 866)
+    """
+
+    def connectionMade(self):
+        self.transport.write(self.getUsers())
+        self.transport.loseConnection()
+
+    def getUsers(self):
+        """
+        Return active users. Override in subclasses.
+        """
+        return b"root\r\n"
+
+
+class Daytime(protocol.Protocol):
+    """
+    Send back the daytime in ASCII form (RFC 867).
+    """
+
+    def connectionMade(self):
+        self.transport.write(time.asctime(time.gmtime(time.time())) + b"\r\n")
+        self.transport.loseConnection()
+
+
+class Time(protocol.Protocol):
+    """
+    Send back the time in machine readable form (RFC 868).
+    """
+
+    def connectionMade(self):
+        # is this correct only for 32-bit machines?
+        result = struct.pack("!i", int(time.time()))
+        self.transport.write(result)
+        self.transport.loseConnection()
+
+
+__all__ = ["Echo", "Discard", "Chargen", "QOTD", "Who", "Daytime", "Time"]