Demo/sockets/rpythond.py

   1 #! /usr/bin/env python
   2
   3 # Remote python server.
   4 # Execute Python commands remotely and send output back.
   5 # WARNING: This version has a gaping security hole -- it accepts requests
   6 # from any host on the Internet!
   7
   8 import sys
   9 from socket import *
  10 import io
  11 import traceback
  12
  13 PORT = 4127
  14 BUFSIZE = 1024
  15
  16 def main():
  17     if len(sys.argv) > 1:
  18         port = int(eval(sys.argv[1]))
  19     else:
  20         port = PORT
  21     s = socket(AF_INET, SOCK_STREAM)
  22     s.bind(('', port))
  23     s.listen(1)
  24     while 1:
  25         conn, (remotehost, remoteport) = s.accept()
  26         print('connected by', remotehost, remoteport)
  27         request = ''
  28         while 1:
  29             data = conn.recv(BUFSIZE)
  30             if not data:
  31                 break
  32             request = request + data
  33         reply = execute(request)
  34         conn.send(reply)
  35         conn.close()
  36
  37 def execute(request):
  38     stdout = sys.stdout
  39     stderr = sys.stderr
  40     sys.stdout = sys.stderr = fakefile = io.StringIO()
  41     try:
  42         try:
  43             exec(request, {}, {})
  44         except:
  45             print()
  46             traceback.print_exc(100)
  47     finally:
  48         sys.stderr = stderr
  49         sys.stdout = stdout
  50     return fakefile.getvalue()
  51
  52 main()