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Dir : ~/usr/lib/python3/dist-packages/keyring/backends/

View File Name : OS_X.py

import platform

from ..backend import KeyringBackend
from ..errors import PasswordSetError
from ..errors import PasswordDeleteError
from ..errors import KeyringLocked
from ..errors import KeyringError
from ..util import properties

try:
    from . import _OS_X_API as api
except Exception:
    pass


class Keyring(KeyringBackend):
    """macOS Keychain"""

    keychain = None
    "Pathname to keychain filename, overriding default keychain."

    @properties.ClassProperty
    @classmethod
    def priority(cls):
        """
        Preferred for all macOS environments.
        """
        if platform.system() != 'Darwin':
            raise RuntimeError("macOS required")
        return 5

    def set_password(self, service, username, password):
        if username is None:
            username = ''

        try:
            api.set_generic_password(
                self.keychain, service, username, password)
        except api.KeychainDenied as e:
            raise KeyringLocked("Can't store password on keychain: "
                                "{}".format(e))
        except api.Error as e:
            raise PasswordSetError("Can't store password on keychain: "
                                   "{}".format(e))

    def get_password(self, service, username):
        if username is None:
            username = ''

        try:
            return api.find_generic_password(self.keychain, service, username)
        except api.NotFound:
            pass
        except api.KeychainDenied as e:
            raise KeyringLocked("Can't get password from keychain: "
                                "{}".format(e))
        except api.Error as e:
            raise KeyringError("Can't get password from keychain: "
                               "{}".format(e))

    def delete_password(self, service, username):
        if username is None:
            username = ''

        try:
            return api.delete_generic_password(
                self.keychain, service, username)
        except api.Error as e:
            raise PasswordDeleteError("Can't delete password in keychain: "
                                      "{}".format(e))