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# Copyright 2010-2021 The pygit2 contributors
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2,
# as published by the Free Software Foundation.
#
# In addition to the permissions in the GNU General Public License,
# the authors give you unlimited permission to link the compiled
# version of this file into combinations with other programs,
# and to distribute those combinations without any restriction
# coming from the use of this file.  (The General Public License
# restrictions do apply in other respects; for example, they cover
# modification of the file, and distribution when not linked into
# a combined executable.)
#
# This file 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; see the file COPYING.  If not, write to
# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.

from .ffi import C


GIT_CREDENTIAL_USERPASS_PLAINTEXT = C.GIT_CREDENTIAL_USERPASS_PLAINTEXT
GIT_CREDENTIAL_SSH_KEY = C.GIT_CREDENTIAL_SSH_KEY
GIT_CREDENTIAL_SSH_CUSTOM = C.GIT_CREDENTIAL_SSH_CUSTOM
GIT_CREDENTIAL_DEFAULT = C.GIT_CREDENTIAL_DEFAULT
GIT_CREDENTIAL_SSH_INTERACTIVE = C.GIT_CREDENTIAL_SSH_INTERACTIVE
GIT_CREDENTIAL_USERNAME = C.GIT_CREDENTIAL_USERNAME
GIT_CREDENTIAL_SSH_MEMORY = C.GIT_CREDENTIAL_SSH_MEMORY


class Username:
    """Username credentials

    This is an object suitable for passing to a remote's credentials
    callback and for returning from said callback.
    """

    def __init__(self, username):
        self._username = username

    @property
    def credential_type(self):
        return GIT_CREDENTIAL_USERNAME

    @property
    def credential_tuple(self):
        return (self._username,)

    def __call__(self, _url, _username, _allowed):
        return self


class UserPass:
    """Username/Password credentials

    This is an object suitable for passing to a remote's credentials
    callback and for returning from said callback.
    """

    def __init__(self, username, password):
        self._username = username
        self._password = password

    @property
    def credential_type(self):
        return GIT_CREDENTIAL_USERPASS_PLAINTEXT

    @property
    def credential_tuple(self):
        return (self._username, self._password)

    def __call__(self, _url, _username, _allowed):
        return self


class Keypair:
    """
    SSH key pair credentials.

    This is an object suitable for passing to a remote's credentials
    callback and for returning from said callback.

    Parameters:

    username : str
        The username being used to authenticate with the remote server.

    pubkey : str
        The path to the user's public key file.

    privkey : str
        The path to the user's private key file.

    passphrase : str
        The password used to decrypt the private key file, or empty string if
        no passphrase is required.
    """

    def __init__(self, username, pubkey, privkey, passphrase):
        self._username = username
        self._pubkey = pubkey
        self._privkey = privkey
        self._passphrase = passphrase

    @property
    def credential_type(self):
        return GIT_CREDENTIAL_SSH_KEY

    @property
    def credential_tuple(self):
        return (self._username, self._pubkey, self._privkey, self._passphrase)

    def __call__(self, _url, _username, _allowed):
        return self


class KeypairFromAgent(Keypair):
    def __init__(self, username):
        super().__init__(username, None, None, None)


class KeypairFromMemory(Keypair):
    @property
    def credential_type(self):
        return GIT_CREDENTIAL_SSH_MEMORY

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