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

#!/usr/local/bin/python

import os

import sys

import re

import resource

jailBase = '/home/informatics/jails/'

siteBase = '/home/informatics/www/'

def findUser(login):

    entries = {}

    passwdfile = open('/etc/passwd')

    for line in passwdfile.readlines():

        rec = re.split(':',line)

        if rec[0] == login:

            return rec

    raise Exception, (login + " not found!")

def throttle():

    Kb = 1024

    Mb = 1024 * 1024

    limits = [(resource.RLIMIT_CORE,     (0,0)), \

              (resource.RLIMIT_CPU,      (1,2)), \

              (resource.RLIMIT_FSIZE,    (5 * Mb, 5 * Mb)), \

              (resource.RLIMIT_DATA,     (20 * Mb, 24 * Mb)), \

              (resource.RLIMIT_STACK,    (8 * Mb, 9 * Mb)), \

              (resource.RLIMIT_NPROC,    (10, 10)), \

              (resource.RLIMIT_NOFILE,   (50, 60))]

    for (r,l) in limits:

        resource.setrlimit(r,l)

def runit(login):

    os.environ['DOCUMENT_ROOT'] = '/'

    os.environ['SCRIPT_FILENAME'] = re.sub(siteBase + login + '/',

                        '/home/' + login + '/svn/' + login + '/trunk/',

                        os.environ['SCRIPT_FILENAME'])

    os.environ['HOME'] = '/home/' + login

    script = os.environ['SCRIPT_FILENAME']

    user = findUser(login)

    uid = int(user[2])

    os.chdir(jailBase + login)

    os.chroot(jailBase + login)

    os.setuid(uid)

    throttle()

    os.execlp("/usr/bin/python", "python", script)

m = re.match('^/([^/]*)/', os.environ['SCRIPT_NAME'])

if m is None:

    exit(1)

login = m.group(1)

runit(login)