~azzar1/unity/add-show-desktop-key

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#!/usr/bin/python

# usage:
#   python-console <port> <magic>

import sys
import web
import md5
import codeop
import cjson
import cgi
import cStringIO
import signal

globs = {}
globs['__builtins__'] = globals()['__builtins__']
locls = {}
compiler = codeop.CommandCompiler()
curr_cmd = ''

def do_chat(txt):
    global curr_cmd
    if curr_cmd == '':
        curr_cmd = txt
    else:
        curr_cmd = curr_cmd + '\n' + txt
    try:
        cmd = compiler(curr_cmd)
        if cmd is None:
            # The command was incomplete,
            # so send back a None, so the
            # client can print a '...'
            web.output(cjson.encode(None))
        else:
            # The command was complete,
            # so evaluate it!
            out = cStringIO.StringIO()
            sys.stdout = out
            sys.stderr = out
            signal.alarm(5)
            res = eval(cmd, globs, locls)
            signal.alarm(0)
            v = (out.getvalue(), res, None)
            web.output(cjson.encode(v))
            curr_cmd = ''
    except Exception, exc:
        signal.alarm(0)
        v = (None, None, str(exc))
        web.output(cjson.encode(v))
        curr_cmd = ''

urls = (
    '/',            'index',
    '/index.html',  'index',
    '/(.*\.js)',    'jscript',
    '/(.*\.css)',   'style',
    '/chat',        'chat')

# The global 'magic' is the secret that the client and server share
# which is used to create and md5 digest to authenticate requests.
# It is assigned a real value at startup.
magic = ''

class index:
    def GET(self):
        inp = web.input()

        # Authenticate
        digest = md5.new('hello' + magic).digest().encode('hex')
        if inp.digest != digest:
            web.ctx.status = '401 Unauthorized'
            return

        # Okay, so the authentication succeeded,
        # so all we need to do is send back the static
        # HTML for the console app.
        web.output(file("index.html", "r").read())

class jscript:
    def GET(self, name):
        web.output(file(name, "r").read())

class style:
    def GET(self, name):
        web.output(file(name, "r").read())

class chat:
    def POST(self):
        inp = web.input()
        sys.stderr.write(str(inp) + "\n")

        # Authenticate
        digest = md5.new(inp.text + magic).digest().encode('hex')
        if inp.digest != digest:
            web.ctx.status = '401 Unauthorized'
            return

        # Okay, so the authentication succeeded,
        # so now we have the trivial matter of actually
        # executing the python....
        do_chat(inp.text)

if __name__ == "__main__":
    # FIXME jail!
    magic = sys.argv[2]
    web.run(urls, globals())