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

#!/usr/bin/python

# IVLE - Informatics Virtual Learning Environment

# Copyright (C) 2007-2008 The University of Melbourne

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

# Script: interpretservice

# Author: David Coles

# Date:   6/3/2007

# A CGI script for interpreting files.

import mimetypes

import os

import sys

import StringIO

import urlparse

import subprocess

from common import (cgirequest, studpath)

import conf

import conf.mimetypes, conf.app, conf.app.server

serveservice_path = "/opt/ivle/scripts/serveservice"

req = cgirequest.CGIRequest()

req.install_error_handler()

# Work out the parts of the URL

url = urlparse.urlparse(req.path)

querystr = url[4]

urlpath = url[2]

username, _, filename = studpath.url_to_jailpaths(urlpath)

path = os.path.split(filename)[0]

python = "/usr/bin/python"

# Everything should be done from the same directory as the script

# If we can't chdir, a 404 will be thrown later when we can't access the file.

try:

    os.chdir(path)

except OSError:

    pass

# Search the path for modules first

sys.path[0] = path

(type, _) = mimetypes.guess_type(filename)

if type is None:

    type = conf.mimetypes.default_mimetype

if filename is None:

    req.throw_error(req.HTTP_NOT_FOUND, "The path specified is invalid.")

elif not os.access(filename, os.R_OK):

    req.throw_error(req.HTTP_NOT_FOUND,

        "The specified file (%s) does not exist." % urlpath)

elif os.path.isdir(filename):

    # 403 Forbidden error for visiting a directory

    # (Not giving a directory listing, since this can be seen by

    # the world at large. Directory contents are private).

    req.throw_error(req.HTTP_FORBIDDEN,

        "The path specified is a directory.")

elif type in conf.app.server.interpreters:

    # We'll save on a fork and execute in this python process

    # Let exceptions blow up normally again

    sys.excepthook = sys.__excepthook__

    execfile(filename, {})

    # Non-Python process should probably use something like

    # subprocess.call([python, filename])

else:

    # Otherwise, use the blacklist/whitelist to see if this file should be

    # served or disallowed

    if (conf.app.server.blacklist_served_filetypes and \

            type in conf.app.server.served_filetypes_blacklist) or \

        (conf.app.server.served_filetypes_whitelist and \

            type not in conf.app.server.served_filetypes_whitelist):

        req.throw_error(req.HTTP_FORBIDDEN,

            "Files of this type are not allowed to be served.")

    execfile(serveservice_path)