fix: issue2551193 - Fix roundup for removal of cgi and cgitb ... standard python modules (and FieldStorage/MiniFieldStorage). Vendor cgi.py and modify imports. Details: roundup/anypy/cgi_.py import that accesses a working cgi.py. All imports dealing with cgi now use cgi_. roundup/anypy/vendored/cgi.py vendored version 2.6 of cgi.py from: https://pypi.org/project/legacy-cgi/ CHANGES.txt change note added COPYING.txt added license for cgi.py doc/rest.txt change example to use cgi_ doc/upgrading.txt doc removal and how to rework local code using cgi.py. frontends/roundup.cgi remove unneeded cgi import roundup/cgi/actions.py roundup/cgi/apache.py roundup/cgi/client.py roundup/cgi/templating.py roundup/cgi/TAL/TALGenerator.py test/db_test_base.py test/rest_common.py test/test_cgi.py remove import cgi and replace with from roundup.anypy.cgi_ import cgi test/test_actions.py test/test_templating.py modify import to get *FieldStorage test/test_admin.py test/test_hyperdbvals.py test/test_xmlrpc.py remove unneeded cgi import

import time, struct, base64
from roundup.cgi.actions import RegisterAction
from roundup.cgi.exceptions import *

def timestamp():
    return base64.encodestring(struct.pack("i", time.time())).strip()

def unpack_timestamp(s):
    return struct.unpack("i",base64.decodestring(s))[0]

class Timestamped:
    def check(self):
        try:
            created = unpack_timestamp(self.form['opaque'].value)
        except KeyError:
            raise FormError("somebody tampered with the form")
        if time.time() - created < 4:
            raise FormError("responding to the form too quickly")
        return True

class TimestampedRegister(Timestamped, RegisterAction):
    def permission(self):
        self.check()
        RegisterAction.permission(self)

def init(instance):
    instance.registerUtil('timestamp', timestamp)
    instance.registerAction('register', TimestampedRegister)