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Viewing changes to modules/org/openteacher/logic/safeHtmlChecker/safeHtmlChecker.py

  • Committer: Marten de Vries
  • Date: 2017-06-28 18:05:48 UTC
  • Revision ID: git-v1:b4c406307aa345c58b9904b76580f15c5bff2a4e
Move JS into npm modules

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modules/org/openteacher/logic/safeHtmlChecker/safeHtmlChecker.py
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#! /usr/bin/env python3
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# -*- coding: utf-8 -*-
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#       Copyright 2013, Marten de Vries
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#
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#       This file is part of OpenTeacher.
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#
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#       OpenTeacher is free software: you can redistribute it and/or modify
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#       it under the terms of the GNU General Public License as published by
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#       the Free Software Foundation, either version 3 of the License, or
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#       (at your option) any later version.
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#
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#       OpenTeacher is distributed in the hope that it will be useful,
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#       but WITHOUT ANY WARRANTY; without even the implied warranty of
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#       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#       GNU General Public License for more details.
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#
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#       You should have received a copy of the GNU General Public License
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#       along with OpenTeacher.  If not, see <http://www.gnu.org/licenses/>.
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class SafeHtmlCheckerModule:
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        def __init__(self, moduleManager, *args, **kwargs):
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                super().__init__(*args, **kwargs)
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                self._mm = moduleManager
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                self.type = "safeHtmlChecker"
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                self.requires = (
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                        self._mm.mods(type="javaScriptEvaluator"),
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                )
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                self.javaScriptImplementation = True
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        def isSafeHtml(self, html):
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                """Checks if it's safe to load an untrusted piece of ``html``
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                   into a user's browser. Uses a tag whitelist.
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                """
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                return self._js.global_["isSafeHtml"](html)
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        def enable(self):
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                self._modules = next(iter(self._mm.mods(type="modules")))
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                self._js = self._modules.default(type="javaScriptEvaluator").createEvaluator()
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                with open(self._mm.resourcePath("safeHtmlChecker.js"), encoding='UTF-8') as f:
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                        self.code = f.read()
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                self._js.eval(self.code)
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                self.active = True
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        def disable(self):
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                self.active = False
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                del self._modules
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                del self._js
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                del self.code
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def init(moduleManager):
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        return SafeHtmlCheckerModule(moduleManager)