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Allow invalidation of keyring authenticator

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This commit is contained in:
I-Al-Istannen 2021-05-25 15:02:35 +02:00
parent 61430c8739
commit d905e95dbb
1 changed files with 32 additions and 17 deletions
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53
PFERD/auth/keyring.py
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@ -4,17 +4,14 @@ import keyring
from ..config import Config from ..config import Config
from ..logging import log from ..logging import log
from ..utils import agetpass from ..utils import agetpass, ainput
from ..version import NAME from ..version import NAME
from .authenticator import Authenticator, AuthError, AuthSection from .authenticator import Authenticator, AuthError, AuthSection
class KeyringAuthSection(AuthSection): class KeyringAuthSection(AuthSection):
def username(self) -> str: def username(self) -> Optional[str]:
name = self.s.get("username") return self.s.get("username")
if name is None:
self.missing_value("username")
return name
def keyring_name(self) -> str: def keyring_name(self) -> str:
return self.s.get("keyring_name", fallback=NAME) return self.s.get("keyring_name", fallback=NAME)
@ -34,23 +31,41 @@ class KeyringAuthenticator(Authenticator):
self._password: Optional[str] = None self._password: Optional[str] = None
self._keyring_name = section.keyring_name() self._keyring_name = section.keyring_name()
self._password_invalidated = False
self._username_fixed = section.username() is not None
async def credentials(self) -> Tuple[str, str]: async def credentials(self) -> Tuple[str, str]:
if self._password is not None: # Request the username
if self._username is None:
async with log.exclusive_output():
self._username = await ainput("Username: ")
# First try looking it up in the keyring.
# Do not look it up if it was invalidated - we want to re-prompt in this case
if self._password is None and not self._password_invalidated:
self._password = keyring.get_password(self._keyring_name, self._username)
# If that fails it wasn't saved in the keyring - we need to
# read it from the user and store it
if self._password is None:
async with log.exclusive_output():
self._password = await agetpass("Password: ")
keyring.set_password(self._keyring_name, self._username, self._password)
self._password_invalidated = False
return self._username, self._password return self._username, self._password
password = keyring.get_password(self._keyring_name, self._username)
if not password:
async with log.exclusive_output():
password = await agetpass("Password: ")
keyring.set_password(self._keyring_name, self._username, password)
self._password = password
return self._username, password
def invalidate_credentials(self) -> None: def invalidate_credentials(self) -> None:
if not self._username_fixed:
self.invalidate_username()
self.invalidate_password() self.invalidate_password()
def invalidate_username(self) -> None:
if self._username_fixed:
raise AuthError("Configured username is invalid")
else:
self._username = None
def invalidate_password(self) -> None: def invalidate_password(self) -> None:
raise AuthError("Invalid password") self._password = None
self._password_invalidated = True