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"""Document Template Tests
"""

__rcs_id__='$Id: testSecurity.py,v 1.3 2001/06/21 17:21:09 shane Exp $'
__version__='$Revision: 1.3 $'[11:-2]

import sys, os
import unittest

if __name__=='__main__':
    sys.path.append(os.path.join(os.pardir, os.pardir))
    here = os.curdir
else:
    from App.Common import package_home
    here = package_home(globals())

import ZODB
from DocumentTemplate import HTML
from DocumentTemplate.tests.testDTML import DTMLTests
from Products.PythonScripts.standard import DTML
from AccessControl import User, Unauthorized
from ExtensionClass import Base

class UnownedDTML(DTML):
    def getOwner(self):
        return None

class SecurityTests (DTMLTests):
    doc_class = UnownedDTML
    unrestricted_doc_class = HTML

    def checkNoImplicitAccess(self):
        class person:
            name='Jim'

        doc = self.doc_class(
            '<dtml-with person>Hi, my name is '
            '<dtml-var name></dtml-with>')
        try:
            doc(person=person)
        except Unauthorized:
            # Passed the test.
            pass
        else:
            assert 0, 'Did not protect class instance'

    def checkExprExplicitDeny(self):
        class myclass (Base):
            __roles__ = None  # Public
            somemethod__roles__ = ()  # Private
            def somemethod(self):
                return "This is a protected operation of public object"

        html = self.doc_class('<dtml-var expr="myinst.somemethod()">')
        try:
            html(myinst=myclass())
        except Unauthorized:
            # Passed the test.
            pass
        else:
            assert 0, 'Did not deny attribute access'

    def checkSecurityInSyntax(self):
        '''
        Ensures syntax errors are thrown for an expr with restricted
        syntax.
        '''
        expr = '<dtml-var expr="(lambda x, _read=(lambda ob:ob): x.y)(c)">'
        try:
            # This would be a security hole.
            html = self.doc_class(expr)  # It might compile here...
            html()                       # or it might compile here.
        except SyntaxError:
            # Passed the test.
            pass
        else:
            assert 0, 'Did not catch bad expr'
        # Now be sure the syntax error occurred for security purposes.
        html = self.unrestricted_doc_class(expr)
        class c:
            y = 10
        res = html(c=c)
        assert res == '10', res

    # Note: we need more tests!


def test_suite():
    return unittest.makeSuite(SecurityTests, 'check')

def main():
    alltests = test_suite()
    runner = unittest.TextTestRunner()
    runner.run(alltests)

def debug():
   test_suite().debug()

def pdebug():
    import pdb
    pdb.run('debug()')

if __name__=='__main__':
    if len(sys.argv) > 1:
        globals()[sys.argv[1]]()
    else:
        main()
