diff options
Diffstat (limited to 'keymanager')
| -rw-r--r-- | keymanager/src/leap/keymanager/keys.py | 311 | ||||
| -rw-r--r-- | keymanager/src/leap/keymanager/openpgp.py | 120 | ||||
| -rw-r--r-- | keymanager/src/leap/keymanager/tests/test_openpgp.py | 2 |
3 files changed, 143 insertions, 290 deletions
diff --git a/keymanager/src/leap/keymanager/keys.py b/keymanager/src/leap/keymanager/keys.py index 1955d545..f2a12a9b 100644 --- a/keymanager/src/leap/keymanager/keys.py +++ b/keymanager/src/leap/keymanager/keys.py @@ -28,10 +28,9 @@ except ImportError: import logging import re import time -import traceback -from abc import ABCMeta, abstractmethod +from abc import ABCMeta from datetime import datetime from leap.common.check import leap_assert from twisted.internet import defer @@ -296,290 +295,32 @@ class EncryptionKey(object): "priv" if self.private else "publ") -# -# Encryption schemes -# - -class EncryptionScheme(object): +def init_indexes(soledad): """ - Abstract class for Encryption Schemes. - - A wrapper for a certain encryption schemes should know how to get and put - keys in local storage using Soledad, how to generate new keys and how to - find out about possibly encrypted content. + Initialize the database indexes. """ + leap_assert(soledad is not None, + "Cannot init indexes with null soledad") - __metaclass__ = ABCMeta - - def __init__(self, soledad): - """ - Initialize this Encryption Scheme. - - :param soledad: A Soledad instance for local storage of keys. - :type soledad: leap.soledad.Soledad - """ - self._soledad = soledad - self.deferred_init = self._init_indexes() - self.deferred_init.addCallback(self._migrate_documents_schema) - - def _init_indexes(self): - """ - Initialize the database indexes. - """ - leap_assert(self._soledad is not None, - "Cannot init indexes with null soledad") - - def init_idexes(indexes): - deferreds = [] - db_indexes = dict(indexes) - # Loop through the indexes we expect to find. - for name, expression in INDEXES.items(): - if name not in db_indexes: - # The index does not yet exist. - d = self._soledad.create_index(name, *expression) - deferreds.append(d) - elif expression != db_indexes[name]: - # The index exists but the definition is not what expected, - # so we delete it and add the proper index expression. - d = self._soledad.delete_index(name) - d.addCallback( - lambda _: - self._soledad.create_index(name, *expression)) - deferreds.append(d) - return defer.gatherResults(deferreds, consumeErrors=True) - - 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): - """ - Methods that need to wait for the indexes to be ready. - - Heavily based on - http://blogs.fluidinfo.com/terry/2009/05/11/a-mixin-class-allowing-python-__init__-methods-to-work-with-twisted-deferreds/ - - :param methods: methods that need to wait for the indexes to be ready - :type methods: tuple(str) - """ - self.waiting = [] - self.stored = {} - - def restore(_): - for method in self.stored: - setattr(self, method, self.stored[method]) - for d in self.waiting: - d.callback(None) - - def makeWrapper(method): - def wrapper(*args, **kw): - d = defer.Deferred() - d.addCallback(lambda _: self.stored[method](*args, **kw)) - self.waiting.append(d) - return d - return wrapper - - for method in methods: - self.stored[method] = getattr(self, method) - setattr(self, method, makeWrapper(method)) - - self.deferred_init.addCallback(restore) - - @abstractmethod - def get_key(self, address, private=False): - """ - Get key from local storage. - - :param address: The address bound to the key. - :type address: str - :param private: Look for a private key instead of a public one? - :type private: bool - - :return: A Deferred which fires with the EncryptionKey bound to - address, or which fails with KeyNotFound if the key was not - found on local storage. - :rtype: Deferred - """ - pass - - @abstractmethod - def put_key(self, key): - """ - Put a key in local storage. - - :param key: The key to be stored. - :type key: EncryptionKey - - :return: A Deferred which fires when the key is in the storage. - :rtype: Deferred - """ - pass - - @abstractmethod - def gen_key(self, address): - """ - Generate a new key. - - :param address: The address bound to the key. - :type address: str - - :return: The key bound to C{address}. - :rtype: EncryptionKey - """ - pass - - @abstractmethod - def delete_key(self, key): - """ - Remove C{key} from storage. - - :param key: The key to be removed. - :type key: EncryptionKey - - :return: A Deferred which fires when the key is deleted, or which - fails with KeyNotFound if the key was not found on local - storage. - :rtype: Deferred - """ - pass - - @abstractmethod - def encrypt(self, data, pubkey, passphrase=None, sign=None): - """ - Encrypt C{data} using public @{pubkey} and sign with C{sign} key. - - :param data: The data to be encrypted. - :type data: str - :param pubkey: The key used to encrypt. - :type pubkey: EncryptionKey - :param sign: The key used for signing. - :type sign: EncryptionKey - - :return: The encrypted data. - :rtype: str - """ - pass - - @abstractmethod - def decrypt(self, data, privkey, passphrase=None, verify=None): - """ - Decrypt C{data} using private @{privkey} and verify with C{verify} key. - - :param data: The data to be decrypted. - :type data: str - :param privkey: The key used to decrypt. - :type privkey: OpenPGPKey - :param verify: The key used to verify a signature. - :type verify: OpenPGPKey - - :return: The decrypted data and if signature verifies - :rtype: (unicode, bool) - - :raise DecryptError: Raised if failed decrypting for some reason. - """ - pass - - @abstractmethod - def sign(self, data, privkey): - """ - Sign C{data} with C{privkey}. - - :param data: The data to be signed. - :type data: str - - :param privkey: The private key to be used to sign. - :type privkey: EncryptionKey - - :return: The signed data. - :rtype: str - """ - pass - - @abstractmethod - def verify(self, data, pubkey, detached_sig=None): - """ - Verify signed C{data} with C{pubkey}, eventually using - C{detached_sig}. - - :param data: The data to be verified. - :type data: str - :param pubkey: The public key to be used on verification. - :type pubkey: EncryptionKey - :param detached_sig: A detached signature. If given, C{data} is - verified against this sdetached signature. - :type detached_sig: str - - :return: signature matches - :rtype: bool - """ - pass - - def _repair_key_docs(self, doclist): - """ - If there is more than one key for a key id try to self-repair it - - :return: a Deferred that will be fired with the valid key doc once all - the deletions are completed - :rtype: Deferred - """ - def log_key_doc(doc): - logger.error("\t%s: %s" % (doc.content[KEY_UIDS_KEY], - doc.content[KEY_FINGERPRINT_KEY])) - - def cmp_key(d1, d2): - return cmp(d1.content[KEY_REFRESHED_AT_KEY], - d2.content[KEY_REFRESHED_AT_KEY]) - - return self._repair_docs(doclist, cmp_key, log_key_doc) - - def _repair_active_docs(self, doclist): - """ - If there is more than one active doc for an address try to self-repair - it - - :return: a Deferred that will be fired with the valid active doc once - all the deletions are completed - :rtype: Deferred - """ - def log_active_doc(doc): - logger.error("\t%s: %s" % (doc.content[KEY_ADDRESS_KEY], - doc.content[KEY_FINGERPRINT_KEY])) - - def cmp_active(d1, d2): - res = cmp(d1.content[KEY_LAST_AUDITED_AT_KEY], - d2.content[KEY_LAST_AUDITED_AT_KEY]) - if res != 0: - return res - - used1 = (d1.content[KEY_SIGN_USED_KEY] + - d1.content[KEY_ENCR_USED_KEY]) - used2 = (d2.content[KEY_SIGN_USED_KEY] + - d2.content[KEY_ENCR_USED_KEY]) - return cmp(used1, used2) - - return self._repair_docs(doclist, cmp_active, log_active_doc) - - def _repair_docs(self, doclist, cmp_func, log_func): - logger.error("BUG ---------------------------------------------------") - logger.error("There is more than one doc of type %s:" - % (doclist[0].content[KEY_TYPE_KEY],)) - - doclist.sort(cmp=cmp_func, reverse=True) - log_func(doclist[0]) + def create_idexes(indexes): deferreds = [] - for doc in doclist[1:]: - log_func(doc) - d = self._soledad.delete_doc(doc) - deferreds.append(d) - - logger.error("") - logger.error(traceback.extract_stack()) - logger.error("BUG (please report above info) ------------------------") - d = defer.gatherResults(deferreds, consumeErrors=True) - d.addCallback(lambda _: doclist[0]) - return d + db_indexes = dict(indexes) + # Loop through the indexes we expect to find. + for name, expression in INDEXES.items(): + if name not in db_indexes: + # The index does not yet exist. + d = soledad.create_index(name, *expression) + deferreds.append(d) + elif expression != db_indexes[name]: + # The index exists but the definition is not what expected, + # so we delete it and add the proper index expression. + d = soledad.delete_index(name) + d.addCallback( + lambda _: + soledad.create_index(name, *expression)) + deferreds.append(d) + return defer.gatherResults(deferreds, consumeErrors=True) + + d = soledad.list_indexes() + d.addCallback(create_idexes) + return d diff --git a/keymanager/src/leap/keymanager/openpgp.py b/keymanager/src/leap/keymanager/openpgp.py index 82050cc8..697ee8a6 100644 --- a/keymanager/src/leap/keymanager/openpgp.py +++ b/keymanager/src/leap/keymanager/openpgp.py @@ -22,6 +22,7 @@ import os import re import shutil import tempfile +import traceback import io @@ -36,13 +37,19 @@ from leap.common.check import leap_assert, leap_assert_type, leap_check from leap.keymanager import errors from leap.keymanager.keys import ( EncryptionKey, - EncryptionScheme, + init_indexes, is_address, build_key_from_dict, TYPE_FINGERPRINT_PRIVATE_INDEX, TYPE_ADDRESS_PRIVATE_INDEX, KEY_UIDS_KEY, KEY_FINGERPRINT_KEY, + KEY_REFRESHED_AT_KEY, + KEY_LAST_AUDITED_AT_KEY, + KEY_SIGN_USED_KEY, + KEY_ENCR_USED_KEY, + KEY_ADDRESS_KEY, + KEY_TYPE_KEY, KEYMANAGER_ACTIVE_TYPE, ) @@ -256,7 +263,7 @@ class OpenPGPKey(EncryptionKey): self.refreshed_at = datetime.now() -class OpenPGPScheme(EncryptionScheme): +class OpenPGPScheme(object): """ A wrapper for OpenPGP keys management and use (encryption, decyption, signing and verification). @@ -275,9 +282,49 @@ class OpenPGPScheme(EncryptionScheme): :param gpgbinary: Name for GnuPG binary executable. :type gpgbinary: C{str} """ - EncryptionScheme.__init__(self, soledad) - self._wait_indexes("get_key", "put_key") + self._soledad = soledad self._gpgbinary = gpgbinary + self.deferred_init = init_indexes(soledad) + self.deferred_init.addCallback(self._migrate_documents_schema) + self._wait_indexes("get_key", "put_key") + + def _migrate_documents_schema(self, _): + from leap.keymanager.migrator import KeyDocumentsMigrator + migrator = KeyDocumentsMigrator(self._soledad) + return migrator.migrate() + + def _wait_indexes(self, *methods): + """ + Methods that need to wait for the indexes to be ready. + + Heavily based on + http://blogs.fluidinfo.com/terry/2009/05/11/a-mixin-class-allowing-python-__init__-methods-to-work-with-twisted-deferreds/ + + :param methods: methods that need to wait for the indexes to be ready + :type methods: tuple(str) + """ + self.waiting = [] + self.stored = {} + + def restore(_): + for method in self.stored: + setattr(self, method, self.stored[method]) + for d in self.waiting: + d.callback(None) + + def makeWrapper(method): + def wrapper(*args, **kw): + d = defer.Deferred() + d.addCallback(lambda _: self.stored[method](*args, **kw)) + self.waiting.append(d) + return d + return wrapper + + for method in methods: + self.stored[method] = getattr(self, method) + setattr(self, method, makeWrapper(method)) + + self.deferred_init.addCallback(restore) # # Keys management @@ -849,6 +896,71 @@ class OpenPGPScheme(EncryptionScheme): return repair_func(doclist) return doclist[0] + def _repair_key_docs(self, doclist): + """ + If there is more than one key for a key id try to self-repair it + + :return: a Deferred that will be fired with the valid key doc once all + the deletions are completed + :rtype: Deferred + """ + def log_key_doc(doc): + logger.error("\t%s: %s" % (doc.content[KEY_UIDS_KEY], + doc.content[KEY_FINGERPRINT_KEY])) + + def cmp_key(d1, d2): + return cmp(d1.content[KEY_REFRESHED_AT_KEY], + d2.content[KEY_REFRESHED_AT_KEY]) + + return self._repair_docs(doclist, cmp_key, log_key_doc) + + def _repair_active_docs(self, doclist): + """ + If there is more than one active doc for an address try to self-repair + it + + :return: a Deferred that will be fired with the valid active doc once + all the deletions are completed + :rtype: Deferred + """ + def log_active_doc(doc): + logger.error("\t%s: %s" % (doc.content[KEY_ADDRESS_KEY], + doc.content[KEY_FINGERPRINT_KEY])) + + def cmp_active(d1, d2): + res = cmp(d1.content[KEY_LAST_AUDITED_AT_KEY], + d2.content[KEY_LAST_AUDITED_AT_KEY]) + if res != 0: + return res + + used1 = (d1.content[KEY_SIGN_USED_KEY] + + d1.content[KEY_ENCR_USED_KEY]) + used2 = (d2.content[KEY_SIGN_USED_KEY] + + d2.content[KEY_ENCR_USED_KEY]) + return cmp(used1, used2) + + return self._repair_docs(doclist, cmp_active, log_active_doc) + + def _repair_docs(self, doclist, cmp_func, log_func): + logger.error("BUG ---------------------------------------------------") + logger.error("There is more than one doc of type %s:" + % (doclist[0].content[KEY_TYPE_KEY],)) + + doclist.sort(cmp=cmp_func, reverse=True) + log_func(doclist[0]) + deferreds = [] + for doc in doclist[1:]: + log_func(doc) + d = self._soledad.delete_doc(doc) + deferreds.append(d) + + logger.error("") + logger.error(traceback.extract_stack()) + logger.error("BUG (please report above info) ------------------------") + d = defer.gatherResults(deferreds, consumeErrors=True) + d.addCallback(lambda _: doclist[0]) + return d + def process_key(key_data, gpgbinary, secret=False): with TempGPGWrapper(gpgbinary=gpgbinary) as gpg: diff --git a/keymanager/src/leap/keymanager/tests/test_openpgp.py b/keymanager/src/leap/keymanager/tests/test_openpgp.py index 68fb4e00..acb2c1c4 100644 --- a/keymanager/src/leap/keymanager/tests/test_openpgp.py +++ b/keymanager/src/leap/keymanager/tests/test_openpgp.py @@ -305,8 +305,8 @@ class OpenPGPCryptoTestCase(KeyManagerWithSoledadTestCase): pgp = openpgp.OpenPGPScheme( self._soledad, gpgbinary=self.gpg_binary_path) yield pgp.put_raw_key(PUBLIC_KEY, ADDRESS) - self.assertEqual(self.count, 2) self._soledad.delete_doc = delete_doc + self.assertEqual(self.count, 2) @inlineCallbacks def test_self_repair_five_active_docs(self): |