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| Current File : //usr/lib/python3/dist-packages/keyring/backends/SecretService.py |
import logging
import sys
import os
from ..util import properties
from ..backend import KeyringBackend
from ..errors import (InitError, PasswordDeleteError,
ExceptionRaisedContext)
try:
import secretstorage
import secretstorage.exceptions as exceptions
except ImportError:
pass
except AttributeError:
# See https://github.com/jaraco/keyring/issues/296
pass
log = logging.getLogger(__name__)
class Keyring(KeyringBackend):
"""Secret Service Keyring"""
appid = os.path.basename(sys.argv[0]) or 'Python keyring library'
@properties.ClassProperty
@classmethod
def priority(cls):
with ExceptionRaisedContext() as exc:
secretstorage.__name__
if exc:
raise RuntimeError("SecretStorage required")
if not hasattr(secretstorage, 'get_default_collection'):
raise RuntimeError("SecretStorage 1.0 or newer required")
try:
bus = secretstorage.dbus_init()
list(secretstorage.get_all_collections(bus))
except exceptions.SecretServiceNotAvailableException as e:
raise RuntimeError(
"Unable to initialize SecretService: %s" % e)
return 5
def get_preferred_collection(self):
"""If self.preferred_collection contains a D-Bus path, the collection
at that address is returned. Otherwise, the default collection is returned.
"""
bus = secretstorage.dbus_init()
try:
if hasattr(self, 'preferred_collection'):
collection = secretstorage.Collection(
bus, self.preferred_collection)
else:
collection = secretstorage.get_default_collection(bus)
except exceptions.SecretStorageException as e:
raise InitError("Failed to create the collection: %s." % e)
if collection.is_locked():
collection.unlock()
if collection.is_locked(): # User dismissed the prompt
raise InitError("Failed to unlock the collection!")
return collection
def get_password(self, service, username):
"""Get password of the username for the service
"""
collection = self.get_preferred_collection()
items = collection.search_items(
{"username": username, "service": service})
for item in items:
if hasattr(item, 'unlock'):
if item.is_locked() and item.unlock()[0]:
raise InitError('failed to unlock item')
return item.get_secret().decode('utf-8')
def set_password(self, service, username, password):
"""Set password for the username of the service
"""
collection = self.get_preferred_collection()
attributes = {
"application": self.appid,
"service": service,
"username": username
}
label = "Password for '%s' on '%s'" % (username, service)
collection.create_item(label, attributes, password, replace=True)
def delete_password(self, service, username):
"""Delete the stored password (only the first one)
"""
collection = self.get_preferred_collection()
items = collection.search_items(
{"username": username, "service": service})
for item in items:
return item.delete()
raise PasswordDeleteError("No such password!")
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