| 1 | #! /usr/bin/env python
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| 2 |
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| 3 | """A multi-threaded telnet-like server that gives a Python prompt.
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| 4 |
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| 5 | This is really a prototype for the same thing in C.
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| 6 |
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| 7 | Usage: pysvr.py [port]
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| 8 |
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| 9 | For security reasons, it only accepts requests from the current host.
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| 10 | This can still be insecure, but restricts violations from people who
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| 11 | can log in on your machine. Use with caution!
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| 12 |
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| 13 | """
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| 14 |
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| 15 | import sys, os, string, getopt, thread, socket, traceback
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| 16 |
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| 17 | PORT = 4000 # Default port
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| 18 |
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| 19 | def main():
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| 20 | try:
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| 21 | opts, args = getopt.getopt(sys.argv[1:], "")
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| 22 | if len(args) > 1:
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| 23 | raise getopt.error, "Too many arguments."
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| 24 | except getopt.error, msg:
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| 25 | usage(msg)
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| 26 | for o, a in opts:
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| 27 | pass
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| 28 | if args:
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| 29 | try:
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| 30 | port = string.atoi(args[0])
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| 31 | except ValueError, msg:
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| 32 | usage(msg)
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| 33 | else:
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| 34 | port = PORT
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| 35 | main_thread(port)
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| 36 |
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| 37 | def usage(msg=None):
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| 38 | sys.stdout = sys.stderr
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| 39 | if msg:
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| 40 | print msg
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| 41 | print "\n", __doc__,
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| 42 | sys.exit(2)
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| 43 |
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| 44 | def main_thread(port):
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| 45 | sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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| 46 | sock.bind(("", port))
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| 47 | sock.listen(5)
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| 48 | print "Listening on port", port, "..."
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| 49 | while 1:
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| 50 | (conn, addr) = sock.accept()
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| 51 | if addr[0] != conn.getsockname()[0]:
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