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authorRuben Pollan <meskio@sindominio.net>2015-12-18 19:37:44 +0100
committerRuben Pollan <meskio@sindominio.net>2016-02-25 11:35:19 -0600
commit81232da09286f7f1812f6d3d182cd57665feaa1f (patch)
treec347ffc096649c6408bc8b5ea9ab3f880efada43 /src/leap/keymanager
parent64eaf2ee426623072bc2d9b1faf77ab831cb3be1 (diff)
[feat] Migrate soledad documents by adding versioning field
- Resolves: #7713
Diffstat (limited to 'src/leap/keymanager')
-rw-r--r--src/leap/keymanager/keys.py22
-rw-r--r--src/leap/keymanager/migrator.py171
-rw-r--r--src/leap/keymanager/tests/__init__.py2
3 files changed, 190 insertions, 5 deletions
diff --git a/src/leap/keymanager/keys.py b/src/leap/keymanager/keys.py
index 0de6a823..a60c19d3 100644
--- a/src/leap/keymanager/keys.py
+++ b/src/leap/keymanager/keys.py
@@ -45,6 +45,7 @@ logger = logging.getLogger(__name__)
# Dictionary keys used for storing cryptographic keys.
#
+KEY_VERSION_KEY = 'version'
KEY_ADDRESS_KEY = 'address'
KEY_TYPE_KEY = 'type'
KEY_ID_KEY = 'key_id'
@@ -69,6 +70,10 @@ KEYMANAGER_KEY_TAG = 'keymanager-key'
KEYMANAGER_ACTIVE_TAG = 'keymanager-active'
KEYMANAGER_ACTIVE_TYPE = '-active'
+# Version of the Soledad Document schema,
+# it should be bumped each time the document format changes
+KEYMANAGER_DOC_VERSION = 1
+
#
# key indexing constants.
@@ -223,6 +228,7 @@ class EncryptionKey(object):
KEY_LENGTH_KEY: self.length,
KEY_EXPIRY_DATE_KEY: expiry_date,
KEY_REFRESHED_AT_KEY: refreshed_at,
+ KEY_VERSION_KEY: KEYMANAGER_DOC_VERSION,
KEY_TAGS_KEY: [KEYMANAGER_KEY_TAG],
})
@@ -244,6 +250,7 @@ class EncryptionKey(object):
KEY_LAST_AUDITED_AT_KEY: last_audited_at,
KEY_ENCR_USED_KEY: self.encr_used,
KEY_SIGN_USED_KEY: self.sign_used,
+ KEY_VERSION_KEY: KEYMANAGER_DOC_VERSION,
KEY_TAGS_KEY: [KEYMANAGER_ACTIVE_TAG],
})
@@ -281,7 +288,8 @@ class EncryptionScheme(object):
:type soledad: leap.soledad.Soledad
"""
self._soledad = soledad
- self._init_indexes()
+ self.deferred_init = self._init_indexes()
+ self.deferred_init.addCallback(self._migrate_documents_schema)
def _init_indexes(self):
"""
@@ -309,8 +317,14 @@ class EncryptionScheme(object):
deferreds.append(d)
return defer.gatherResults(deferreds, consumeErrors=True)
- self.deferred_indexes = self._soledad.list_indexes()
- self.deferred_indexes.addCallback(init_idexes)
+ d = self._soledad.list_indexes()
+ d.addCallback(init_idexes)
+ return d
+
+ def _migrate_documents_schema(self, _):
+ from leap.keymanager.migrator import KeyDocumentsMigrator
+ migrator = KeyDocumentsMigrator(self._soledad)
+ return migrator.migrate()
def _wait_indexes(self, *methods):
"""
@@ -343,7 +357,7 @@ class EncryptionScheme(object):
self.stored[method] = getattr(self, method)
setattr(self, method, makeWrapper(method))
- self.deferred_indexes.addCallback(restore)
+ self.deferred_init.addCallback(restore)
@abstractmethod
def get_key(self, address, private=False):
diff --git a/src/leap/keymanager/migrator.py b/src/leap/keymanager/migrator.py
new file mode 100644
index 00000000..b59647a2
--- /dev/null
+++ b/src/leap/keymanager/migrator.py
@@ -0,0 +1,171 @@
+# -*- coding: utf-8 -*-
+# migrator.py
+# Copyright (C) 2015 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Document migrator
+"""
+# XXX: versioning has being added 12/2015 when keymanager was not
+# much in use in the wild. We can probably drop support for
+# keys without version at some point.
+
+
+from collections import namedtuple
+from twisted.internet.defer import gatherResults, succeed
+
+from leap.keymanager.keys import (
+ TAGS_PRIVATE_INDEX,
+ KEYMANAGER_KEY_TAG,
+ KEYMANAGER_ACTIVE_TAG,
+
+ KEYMANAGER_DOC_VERSION,
+ KEY_VERSION_KEY,
+ KEY_ID_KEY,
+ KEY_VALIDATION_KEY,
+ KEY_LAST_AUDITED_AT_KEY,
+ KEY_ENCR_USED_KEY,
+ KEY_SIGN_USED_KEY,
+)
+from leap.keymanager.validation import ValidationLevels
+
+
+KeyDocs = namedtuple("KeyDocs", ['key', 'active'])
+
+
+class KeyDocumentsMigrator(object):
+ """
+ Migrate old KeyManager Soledad Documents to the newest schema
+ """
+
+ def __init__(self, soledad):
+ self._soledad = soledad
+
+ def migrate(self):
+ deferred_public = self._get_docs(private=False)
+ deferred_public.addCallback(self._migrate_docs)
+
+ deferred_private = self._get_docs(private=True)
+ deferred_private.addCallback(self._migrate_docs)
+
+ return gatherResults([deferred_public, deferred_private])
+
+ def _get_docs(self, private=False):
+ private_value = '1' if private else '0'
+
+ deferred_keys = self._soledad.get_from_index(
+ TAGS_PRIVATE_INDEX,
+ KEYMANAGER_KEY_TAG,
+ private_value)
+ deferred_active = self._soledad.get_from_index(
+ TAGS_PRIVATE_INDEX,
+ KEYMANAGER_ACTIVE_TAG,
+ private_value)
+ return gatherResults([deferred_keys, deferred_active])
+
+ def _migrate_docs(self, (key_docs, active_docs)):
+ def update_keys(keys):
+ deferreds = []
+ for key_id in keys:
+ key = keys[key_id].key
+ actives = keys[key_id].active
+
+ d = self._migrate_actives(key, actives)
+ deferreds.append(d)
+
+ d = self._migrate_key(key)
+ deferreds.append(d)
+ return gatherResults(deferreds)
+
+ d = self._buildKeyDict(key_docs, active_docs)
+ d.addCallback(lambda keydict: self._filter_outdated(keydict))
+ d.addCallback(update_keys)
+
+ def _buildKeyDict(self, keys, actives):
+ keydict = {
+ fp2id(key.content[KEY_FINGERPRINT_KEY]): KeyDocs(key, [])
+ for key in keys}
+
+ deferreds = []
+ for active in actives:
+ if KEY_ID_KEY in active.content:
+ key_id = active.content[KEY_ID_KEY]
+ if key_id not in keydict:
+ d = self._soledad.delete_doc(active)
+ deferreds.append(d)
+ continue
+ keydict[key_id].active.append(active)
+
+ d = gatherResults(deferreds)
+ d.addCallback(lambda _: keydict)
+ return d
+
+ def _filter_outdated(self, keydict):
+ outdated = {}
+ for key_id, docs in keydict.items():
+ if ((docs.key and KEY_VERSION_KEY not in docs.key.content) or
+ docs.active):
+ outdated[key_id] = docs
+ return outdated
+
+ def _migrate_actives(self, key, actives):
+ if not key:
+ deferreds = []
+ for active in actives:
+ d = self._soledad.delete_doc(active)
+ deferreds.append(d)
+ return gatherResults(deferreds)
+
+ validation = str(ValidationLevels.Weak_Chain)
+ last_audited = 0
+ encr_used = False
+ sign_used = False
+ if len(actives) == 1 and KEY_VERSION_KEY not in key.content:
+ # we can preserve the validation of the key if there is only one
+ # active address for the key
+ validation = key.content[KEY_VALIDATION_KEY]
+ last_audited = key.content[KEY_LAST_AUDITED_AT_KEY]
+ encr_used = key.content[KEY_ENCR_USED_KEY]
+ sign_used = key.content[KEY_SIGN_USED_KEY]
+
+ deferreds = []
+ for active in actives:
+ if KEY_VERSION_KEY in active.content:
+ continue
+
+ active.content[KEY_VERSION_KEY] = KEYMANAGER_DOC_VERSION
+ active.content[KEY_VALIDATION_KEY] = validation
+ active.content[KEY_LAST_AUDITED_AT_KEY] = last_audited
+ active.content[KEY_ENCR_USED_KEY] = encr_used
+ active.content[KEY_SIGN_USED_KEY] = sign_used
+ d = self._soledad.put_doc(active)
+ deferreds.append(d)
+ return gatherResults(deferreds)
+
+ def _migrate_key(self, key):
+ if not key or KEY_VERSION_KEY in key.content:
+ return succeed(None)
+
+ key.content[KEY_VERSION_KEY] = KEYMANAGER_DOC_VERSION
+ del key.content[KEY_VALIDATION_KEY]
+ del key.content[KEY_LAST_AUDITED_AT_KEY]
+ del key.content[KEY_ENCR_USED_KEY]
+ del key.content[KEY_SIGN_USED_KEY]
+ return self._soledad.put_doc(key)
+
+
+def fp2id(fingerprint):
+ KEY_ID_LENGTH = 16
+ return fingerprint[-KEY_ID_LENGTH:]
diff --git a/src/leap/keymanager/tests/__init__.py b/src/leap/keymanager/tests/__init__.py
index cd612c43..d02f187f 100644
--- a/src/leap/keymanager/tests/__init__.py
+++ b/src/leap/keymanager/tests/__init__.py
@@ -76,7 +76,7 @@ class KeyManagerWithSoledadTestCase(unittest.TestCase, BaseLeapTest):
return d
# wait for the indexes to be ready for the tear down
- d = km._wrapper_map[OpenPGPKey].deferred_indexes
+ d = km._wrapper_map[OpenPGPKey].deferred_init
d.addCallback(get_and_delete_keys)
d.addCallback(lambda _: self.tearDownEnv())
d.addCallback(lambda _: self._soledad.close())