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annotate clwapp/clwapp.py @ 3:672addc0c4be

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more fixup
author Jeff Hammel <jhammel@mozilla.com>
date Tue, 20 Dec 2011 12:44:40 -0800
parents 79a43cbdf584
children dfcd4dbe4b1c
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196f241286f7 initial import of clwapp, from https://svn.openplans.org/svn/standalone/clwapp/trunk/
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1 """
196f241286f7 initial import of clwapp, from https://svn.openplans.org/svn/standalone/clwapp/trunk/
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2 clwapp: Command Line Web APP
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4 clwapp is configured with clwapp.command in paste's .ini file
196f241286f7 initial import of clwapp, from https://svn.openplans.org/svn/standalone/clwapp/trunk/
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5 arguments are passed in the query string. That is, if clwapp.command = ls,
196f241286f7 initial import of clwapp, from https://svn.openplans.org/svn/standalone/clwapp/trunk/
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6 one could do http://localhost:9999/?-l&-a to pass the '-l' and '-a' arguments.
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8 DO NOT USE THIS (WITHOUT AUTH) WITH PROGRAMS THAT CAN ADVERSELY AFFECT THE
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9 SYSTEM OR EXPOSE SENSITIVE DATA! subprocess.Popen is used, so that limit to
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10 the shell is restricted, but programs that can alter your system can be
196f241286f7 initial import of clwapp, from https://svn.openplans.org/svn/standalone/clwapp/trunk/
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11 exploited. clwapp works well with programs that display information (provided
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12 their access is restricted from secure information), and less well with
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13 programs that change the state of the server.
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14 *NEVER* use with Popen(shell=True) unless you are sure of your security.
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16 """
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17
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18 import os
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19 import subprocess
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20 import utils
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22 from webob import Request, Response, exc
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24 class View(object):
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26 ### class level variables
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27 defaults = {}
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29 def __init__(self, command, **kw):
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30 self.command = utils.shargs(command)
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31 print self.command
196f241286f7 initial import of clwapp, from https://svn.openplans.org/svn/standalone/clwapp/trunk/
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32 for key in self.defaults:
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33 setattr(self, key, kw.get(key, self.defaults[key]))
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34 self.response_functions = { 'GET': self.get }
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36 ### methods dealing with HTTP
196f241286f7 initial import of clwapp, from https://svn.openplans.org/svn/standalone/clwapp/trunk/
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37 def __call__(self, environ, start_response):
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38 self.request = Request(environ)
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39 res = self.make_response(self.request.method)
196f241286f7 initial import of clwapp, from https://svn.openplans.org/svn/standalone/clwapp/trunk/
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40 return res(environ, start_response)
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42 def make_response(self, method):
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43 return self.response_functions.get(method, self.error)()
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45 def get_response(self, text, content_type='text/html'):
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46 res = Response(content_type=content_type, body=text)
196f241286f7 initial import of clwapp, from https://svn.openplans.org/svn/standalone/clwapp/trunk/
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47 res.content_length = len(res.body)
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48 return res
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50 def get(self):
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51 """
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52 return response to a GET requst
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53 """
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54 args = self.command + self.request.GET.keys()
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55 process = subprocess.Popen(args, stdout=subprocess.PIPE)
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56 output = process.communicate()[0]
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57 output = output.decode('utf-8', 'ignore')
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58 title = ' '.join([os.path.basename(args[0])] + args[1:])
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59 return self.get_response("""<html><head><title>%s</title></head><body><pre>
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60 %s
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61 </pre></body></html>
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62 """ % (title, output) )
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64 def error(self):
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65 """deal with non-supported methods"""
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66 return exc.HTTPMethodNotAllowed("Only %r operations are allowed" % self.response_functions.keys())
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