FM / pdist

/usr/lib64/python2.6/Demo/pdist

Name	Size	Mode	Actions
client.py	4708	0644	edit dl rm
client.pyc	6769	0644	edit dl rm
client.pyo	6769	0644	edit dl rm
cmdfw.py	4641	0644	edit dl rm
cmdfw.pyc	5276	0644	edit dl rm
cmdfw.pyo	5276	0644	edit dl rm
cmptree.py	5778	0644	edit dl rm
cmptree.pyc	6189	0644	edit dl rm
cmptree.pyo	6189	0644	edit dl rm
cvslib.py	10175	0644	edit dl rm
cvslib.pyc	13240	0644	edit dl rm
cvslib.pyo	13240	0644	edit dl rm
cvslock.py	6771	0644	edit dl rm
cvslock.pyc	8597	0644	edit dl rm
cvslock.pyo	8597	0644	edit dl rm
FSProxy.py	8469	0644	edit dl rm
FSProxy.pyc	13360	0644	edit dl rm
FSProxy.pyo	13360	0644	edit dl rm
mac.py	352	0644	edit dl rm
mac.pyc	603	0644	edit dl rm
mac.pyo	603	0644	edit dl rm
makechangelog.py	2992	0755	edit dl rm
makechangelog.pyc	3156	0644	edit dl rm
makechangelog.pyo	3156	0644	edit dl rm
rcsbump	742	0755	edit dl rm
rcsclient.py	1803	0644	edit dl rm
rcsclient.pyc	2128	0644	edit dl rm
rcsclient.pyo	2128	0644	edit dl rm
rcslib.py	10318	0644	edit dl rm
rcslib.pyc	11613	0644	edit dl rm
rcslib.pyo	11613	0644	edit dl rm
RCSProxy.py	4727	0755	edit dl rm
RCSProxy.pyc	7786	0644	edit dl rm
RCSProxy.pyo	7786	0644	edit dl rm
rcvs	114	0755	edit dl rm
rcvs.py	13648	0755	edit dl rm
rcvs.pyc	14581	0644	edit dl rm
rcvs.pyo	14581	0644	edit dl rm
README	4264	0644	edit dl rm
rrcs	114	0755	edit dl rm
rrcs.py	3996	0755	edit dl rm
rrcs.pyc	5670	0644	edit dl rm
rrcs.pyo	5670	0644	edit dl rm
security.py	1092	0644	edit dl rm
security.pyc	1693	0644	edit dl rm
security.pyo	1693	0644	edit dl rm
server.py	4581	0644	edit dl rm
server.pyc	6033	0644	edit dl rm
server.pyo	6033	0644	edit dl rm
sumtree.py	518	0644	edit dl rm
sumtree.pyc	905	0644	edit dl rm
sumtree.pyo	905	0644	edit dl rm

Edit: /usr/lib64/python2.6/Demo/pdist/README (4264B)

Filesystem, RCS and CVS client and server classes
=================================================

*** See the security warning at the end of this file! ***

This directory contains various modules and classes that support
remote file system operations.

CVS stuff
---------

rcvs			Script to put in your bin directory
rcvs.py			Remote CVS client command line interface

cvslib.py		CVS admin files classes (used by rrcs)
cvslock.py		CVS locking algorithms

RCS stuff
---------

rrcs			Script to put in your bin directory
rrcs.py			Remote RCS client command line interface

rcsclient.py		Return an RCSProxyClient instance
			(has reasonable default server/port/directory)

RCSProxy.py		RCS proxy and server classes (on top of rcslib.py)

rcslib.py		Local-only RCS base class (affects stdout &
			local work files)

FSProxy stuff
-------------

sumtree.py		Old demo for FSProxy
cmptree.py		First FSProxy client (used to sync from the Mac)
FSProxy.py		Filesystem interface classes

Generic client/server stuff
---------------------------

client.py		Client class
server.py		Server class

security.py		Security mix-in class (not very secure I think)

Other generic stuff
-------------------

cmdfw.py		CommandFrameWork class
			(used by rcvs, should be used by rrcs as well)

Client/Server operation
-----------------------

The Client and Server classes implement a simple-minded RPC protocol,
using Python's pickle module to transfer arguments, return values and
exceptions with the most generality.  The Server class is instantiated
with a port number on which it should listen for requests; the Client
class is instantiated with a host name and a port number where it
should connect to.  Once a client is connected, a TCP connection is
maintained between client and server.

The Server class currently handles only one connection at a time;
however it could be rewritten to allow various modes of operations,
using multiple threads or processes or the select() system call as
desired to serve multiple clients simultaneously (when using select(),
still handling one request at a time).  This would not require
rewriting of the Client class.  It may also be possible to adapt the
code to use UDP instead of TCP, but then both classes will have to be
rewritten (and unless extensive acknowlegements and request serial
numbers are used, the server should handle duplicate requests, so its
semantics should be idempotent -- shrudder).

Even though the FSProxy and RCSProxy modules define client classes,
the client class is fully generic -- what methods it supports is
determined entirely by the server.  The server class, however, must be
derived from.  This is generally done as follows:

from server import Server
	from client import Client

# Define a class that performs the operations locally
	class MyClassLocal:
		def __init__(self): ...
		def _close(self): ...

# Derive a server class using multiple inheritance
	class MyClassServer(MyClassLocal, Server):
		def __init__(self, address):
			# Must initialize MyClassLocal as well as Server
			MyClassLocal.__init__(self)
			Server.__init__(self, address)
		def _close(self):
			Server._close()
			MyClassLocal._close()

# A dummy client class
	class MyClassClient(Client): pass

Note that because MyClassLocal isn't used in the definition of
MyClassClient, it would actually be better to place it in a separate
module so the definition of MyClassLocal isn't executed when we only
instantiate a client.

The modules client and server should probably be renamed to Client and
Server in order to match the class names.

*** Security warning: this version requires that you have a file
$HOME/.python_keyfile at the server and client side containing two
comma- separated numbers.  The security system at the moment makes no
guarantees of actuallng being secure -- however it requires that the
key file exists and contains the same numbers at both ends for this to
work.  (You can specify an alternative keyfile in $PYTHON_KEYFILE).
Have a look at the Security class in security.py for details;
basically, if the key file contains (x, y), then the security server
class chooses a random number z (the challenge) in the range
10..100000 and the client must be able to produce pow(z, x, y)
(i.e. z**x mod y).

cmd: