Open Media Library Platform

Darwin/lib/python2.7/site-packages/twisted/protocols/wire.py

@@ -0,0 +1,90 @@
+# 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.
+"""
+
+# system imports
+import time, struct
+from zope.interface import implements
+
+# twisted import
+from twisted.internet import protocol, interfaces
+
+
+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
+
+
+class Chargen(protocol.Protocol):
+    """Generate repeating noise (RFC 864)"""
+    noise = r'@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~ !"#$%&?'
+
+    implements(interfaces.IProducer)
+
+    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 "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 "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())) + '\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()
+