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

# IVLE

# 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

# App: debuginfo

# Author: Matt Giuca

# Date: 17/12/2007

# Displays lots of internal information about IVLE's running environment,

# a la phpinfo.

# Important: This application should be removed from a production system.

import os

import cgi

from ivle import util

import ivle.conf

def handle(req):

    """Handler for the Debug Information application."""

    # Set request attributes

    req.content_type = "text/html"

    req.write_html_head_foot = True     # Have dispatch print head and foot

    # Start writing data

    req.write('<div id="ivle_padding">\n')

    req.write("<h2>IVLE Debug Information</h2>\n")

    print_table(req, "System Constants", [

        ("ivle_version", ivle.conf.ivle_version),

        ("prefix", ivle.conf.prefix),

        ("python_site_packages", ivle.conf.python_site_packages),

        ("data_path", ivle.conf.data_path),

        ("log_path", ivle.conf.log_path),

        ("root_dir", ivle.conf.root_dir),

        ("public_host", ivle.conf.public_host),

        ("jail_base", ivle.conf.jail_base),

        ("default_app", ivle.conf.apps.default_app),

        ("public_app", ivle.conf.apps.public_app),

    ])

    print_table(req, "Operating System Variables", [

        ("uid", os.getuid()),

        ("euid", os.geteuid()),

        ("gid", os.getgid()),

        ("egid", os.getegid()),

        ("uname", os.uname()),

    ])

    print_table(req, "Available Applications", ivle.conf.apps.app_url.items())

    print_table(req, "Request Properties", [

        ("method", req.method),

        ("uri", req.uri),

        ("app", req.app),

        ("path", req.path),

        ("user", req.user),

        ("hostname", req.hostname),

    ])

    # Violate encapsulation here to print out the hidden properties

    print_table(req, "Apache (Hidden) Request Properties", [

        ("hostname", req.apache_req.hostname),

        ("method", req.apache_req.method),

        ("unparsed_uri", req.apache_req.unparsed_uri),

        ("parsed_uri", req.apache_req.parsed_uri),

        ("uri", req.apache_req.uri),

        ("filename", req.apache_req.filename),

        ("path_info", req.apache_req.path_info),

    ])

    print_table(req, "Field Storage",

        getfieldvalues(req.get_fieldstorage().items()))

    session = req.get_session()

    print_table(req, "Session Variables", session.items())

    print_table(req, "HTTP Request Headers",

        req.apache_req.headers_in.items())

    print_table(req, "CGI Environment Variables",

        req.get_cgi_environ().items())

    print_table(req, "Server Environment Variables", os.environ.items())

    req.write("<h3>Removal instructions</h3>\n")

    req.write("""<p>In a production environment, debuginfo should be disabled.

    To do this, comment out or remove the debuginfo line of the app_url

    dictionary in ivle/conf/apps.py.</p>

    <p>For extra security, it may be removed completely by deleting the

    apps/debuginfo directory.</p>

</div>

""")

def getfieldvalues(pairs):

    """Given a list of pairs of strings and fields, returns a new list with

    the 2nd elements of each pair modified to be the field's value."""

    if pairs is None: return None

    newlist = []

    for k,v in pairs:

        newlist.append((k,v.value))

    return newlist

def print_table(req, tablename, mapping, head_elem="h3"):

    """Prints an HTML table with a heading.

    mapping: An associative list (a list of pairs). The pairs are printed

    using (str, repr) respectively into the two-column table."""

    req.write("<%s>%s</%s>\n" % (head_elem, tablename, head_elem))

    req.write('<table border="1">\n')

    for (k,v) in mapping:

        req.write("<tr><th>%s</th><td>%s</td></tr>\n" %

                  (cgi.escape(str(k)), cgi.escape(repr(v))))

    req.write("</table>\n")