diff options
| -rw-r--r-- | pym/_emerge/__init__.py | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/pym/_emerge/__init__.py b/pym/_emerge/__init__.py index e7e8e0779..83c9f4da6 100644 --- a/pym/_emerge/__init__.py +++ b/pym/_emerge/__init__.py @@ -1392,6 +1392,40 @@ class BlockerCache(DictMixin): isinstance(self._cache_data, dict) and \ self._cache_data.get("version") == self._cache_version and \ isinstance(self._cache_data.get("blockers"), dict) + if cache_valid: + # Validate all the atoms and counters so that + # corruption is detected as soon as possible. + for k, v in self._cache_data["blockers"].iteritems(): + if not isinstance(k, basestring): + cache_valid = False + break + try: + portage.catpkgsplit(k) + except portage.exception.InvalidData: + cache_valid = False + break + if not isinstance(v, tuple) or \ + len(v) != 2: + cache_valid = False + break + counter, atoms = v + if not isinstance(counter, (int, long)): + cache_valid = False + break + if not isinstance(atoms, list): + cache_valid = False + break + for atom in atoms: + if not isinstance(atom, basestring): + cache_valid = False + break + if atom[:1] != "!" or \ + not portage.isvalidatom( + atom, allow_blockers=True): + cache_valid = False + break + if not cache_valid: + break if not cache_valid: self._cache_data = {"version":self._cache_version} self._cache_data["blockers"] = {} |