ÿØÿàJFIFÿþ ÿÛC       ÿÛC ÿÀÿÄÿÄ"#QrÿÄÿÄ&1!A"2qQaáÿÚ ?Øy,æ/3JæÝ¹È߲؋5êXw²±ÉyˆR”¾I0ó2—PI¾IÌÚiMö¯–þrìN&"KgX:Šíµ•nTJnLK„…@!‰-ý ùúmë;ºgµŒ&ó±hw’¯Õ@”Ü— 9ñ-ë.²1<yà‚¹ïQÐU„ہ?.’¦èûbß±©Ö«Âw*VŒ) `$‰bØÔŸ’ëXÖ-ËTÜíGÚ3ð«g Ÿ§¯—Jx„–’U/ÂÅv_s(Hÿ@TñJÑãõçn­‚!ÈgfbÓc­:él[ðQe 9ÀPLbÃãCµm[5¿ç'ªjglå‡Ûí_§Úõl-;"PkÞÞÁQâ¼_Ñ^¢SŸx?"¸¦ùY騐ÒOÈ q’`~~ÚtËU¹CڒêV  I1Áß_ÿÙ# Copyright 2016, Tresys Technology, LLC # # This file is part of SETools. # # SETools is free software: you can redistribute it and/or modify # it under the terms of the GNU Lesser General Public License as # published by the Free Software Foundation, either version 2.1 of # the License, or (at your option) any later version. # # SETools 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 Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with SETools. If not, see # . # from collections import namedtuple from .context import ContextWrapper from .descriptors import DiffResultDescriptor from .difference import Difference, SymbolWrapper modified_initsids_record = namedtuple("modified_initsid", ["added_context", "removed_context"]) class InitialSIDsDifference(Difference): """Determine the difference in initsids between two policies.""" added_initialsids = DiffResultDescriptor("diff_initialsids") removed_initialsids = DiffResultDescriptor("diff_initialsids") modified_initialsids = DiffResultDescriptor("diff_initialsids") def diff_initialsids(self): """Generate the difference in initial SIDs between the policies.""" self.log.info("Generating initial SID differences from {0.left_policy} to {0.right_policy}". format(self)) self.added_initialsids, self.removed_initialsids, matched_initialsids = self._set_diff( (SymbolWrapper(i) for i in self.left_policy.initialsids()), (SymbolWrapper(i) for i in self.right_policy.initialsids())) self.modified_initialsids = dict() for left_initialsid, right_initialsid in matched_initialsids: # Criteria for modified initialsids # 1. change to context if ContextWrapper(left_initialsid.context) != ContextWrapper(right_initialsid.context): self.modified_initialsids[left_initialsid] = modified_initsids_record( right_initialsid.context, left_initialsid.context) # # Internal functions # def _reset_diff(self): """Reset diff results on policy changes.""" self.log.debug("Resetting initialsid differences") self.added_initialsids = None self.removed_initialsids = None self.modified_initialsids = None