rpythond.py 1.26 KB
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#!/usr/bin/env python3
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"""
Remote python server.
Execute Python commands remotely and send output back.

WARNING: This version has a gaping security hole -- it accepts requests
from any host on the Internet!
"""
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import sys
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from socket import socket, AF_INET, SOCK_STREAM
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import io
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import traceback

PORT = 4127
BUFSIZE = 1024

def main():
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    if len(sys.argv) > 1:
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        port = int(sys.argv[1])
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    else:
        port = PORT
    s = socket(AF_INET, SOCK_STREAM)
    s.bind(('', port))
    s.listen(1)
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    while True:
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        conn, (remotehost, remoteport) = s.accept()
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        print('connection from', remotehost, remoteport)
        request = b''
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        while 1:
            data = conn.recv(BUFSIZE)
            if not data:
                break
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            request += data
        reply = execute(request.decode())
        conn.send(reply.encode())
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        conn.close()
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def execute(request):
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    stdout = sys.stdout
    stderr = sys.stderr
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    sys.stdout = sys.stderr = fakefile = io.StringIO()
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    try:
        try:
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            exec(request, {}, {})
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        except:
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            print()
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            traceback.print_exc(100)
    finally:
        sys.stderr = stderr
        sys.stdout = stdout
    return fakefile.getvalue()
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try:
    main()
except KeyboardInterrupt:
    pass