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afp-cli-370.326
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مشاهده بیشترتوضیحات
Command line client for AWS federation proxy api
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | afp-cli-370.326 |
| نام | afp-cli |
| نسخه کتابخانه | 370.326 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Stefan Neben, Tobias Vollmer, Stefan Nordhausen, Enrico Heine, Valentin Haenel |
| ایمیل نویسنده | stefan.neben@immobilienscout24.de, tobias.vollmer@immobilienscout24.de, stefan.nordhausen@immobilienscout24.de, enrico.heine@immobilienscout24.de, valentin.haenel@immobilienscout24.de |
| آدرس صفحه اصلی | https://github.com/ImmobilienScout24/afp-cli |
| آدرس اینترنتی | https://pypi.org/project/afp-cli/ |
| مجوز | Apache License 2.0 |
=======
AFP CLI
=======
.. image:: https://travis-ci.org/ImmobilienScout24/afp-cli.png?branch=master
:alt: Travis build status image
:target: https://travis-ci.org/ImmobilienScout24/afp-cli
.. image:: https://coveralls.io/repos/ImmobilienScout24/afp-cli/badge.png?branch=master
:alt: Coverage status
:target: https://coveralls.io/r/ImmobilienScout24/afp-cli?branch=master
.. image:: https://landscape.io/github/ImmobilienScout24/afp-cli/master/landscape.svg?style=flat
:target: https://landscape.io/github/ImmobilienScout24/afp-cli/master
:alt: Code Health
.. image:: https://img.shields.io/pypi/v/afp-cli.svg
:alt: Version
:target: https://pypi.python.org/pypi/afp-cli
Overview
========
The AFP CLI is the command line interface to access the
AWS Federation Proxy (AFP).
Its main use case is starting a new shell where your temporary
AWS credentials have been exported into the environment.
Installation
============
The tool is `hosted on PyPi <https://pypi.python.org/pypi/afp-cli>`_ and can be
installed using the usual Python specific mechanisms, e.g.:
.. code-block:: console
$ pip install afp-cli
Configuration
=============
The ``afp`` command can be configured through yaml files in
the following directories:
* ``/etc/afp-cli/*.yaml`` (global configuration)
* ``$HOME/.afp-cli/*.yaml`` (per-user configuration)
The yaml files are read in lexical order and merged via
`yamlreader <https://github.com/ImmobilienScout24/yamlreader>`_.
The following configuration options are supported:
* ``api_url: <api-url>``
Defaults to lookup a FQDN of a host named ``afp`` via DNS and construct
the server url from it: ``https://{FQDN}/afp-api/latest``
The specified url must contain full server url (not just the FQDN).
This option always takes precedence over ``server``
* ``server: <server>``
The AFP server to use. No default value.
If not overridden by ``api_url`` (see above), ``api_url`` will
become ``http://<server>//afp-api/latest``
* ``user: <username>``
Defaults to the currently logged in user-name
* ``password-provider: <provider>``
Viable options are: ``prompt`` (default) to prompt for the password during
every interaction with the AFP server or ``keyring`` to use the Python
``keyring`` module. For more info about using the ``keyring`` module, see
below.
Example:
.. code-block:: yaml
user: myuser
api_url: https://afp-server.my.domain/afp-api/latest
password-provider: keyring
Usage
=====
Get Help Text
-------------
.. code-block:: console
$ afp [-h | --help]
List Available Account Names and Roles
--------------------------------------
For the currently logged-in user:
.. code-block:: console
$ afp
The same for another user:
.. code-block:: console
$ afp --user=username
Output format:
::
<accountname> <role1>,<role2>,...,<roleN>
Example output:
::
abc_account some_role_in_abc_account
xyz_account some_role_in_yxz_account,another_role_in_xyz
Obtain AWS Credentials
----------------------
This starts a subshell in which the credentials have been exported into the
environment. Use the ``exit`` command or press **CTRL+D** to terminate the
subshell.
Use credentials for currently logged in user and specified account and role:
.. code-block:: console
$ afp accountname rolename
Use credentials for the currently logged in user for the *first* role:
.. code-block:: console
$ afp accountname
As above, but specifying a different user:
.. code-block:: console
$ afp --user=username accountname rolename
Specify the URL of the AFP server, overriding any config file:
.. code-block:: console
$ afp --api-url=https://afp-server.my.domain/afp-api/latest
Show and Export
---------------
In case you don't want to start a subshell or are using something other than
bash, you can use ``--show`` or ``--export`` to display the credentials. You
can use the usual UNIX tools to add/remove them from your environment.
``--show`` will just show them and ``--export`` will show them in a format
suitable for an export into your environment, i.e. prefixed with ``export`` for
UNIX and ``set`` for Windows.
.. code-block:: console
$ afp --show <myaccount> [<myrole>]
Password for myuser:
AWS_VALID_SECONDS='600'
AWS_SESSION_TOKEN='XXX'
AWS_SECURITY_TOKEN='XXX'
AWS_SECRET_ACCESS_KEY='XXX'
AWS_EXPIRATION_DATE='1970-01-01T01:00:00Z'
AWS_ACCESS_KEY_ID='XXX'
.. code-block:: console
$ afp --export <myaccount> [<myrole>]
Password for myuser:
export AWS_VALID_SECONDS='600'
export AWS_SESSION_TOKEN='XXX'
export AWS_SECURITY_TOKEN='XXX'
export AWS_SECRET_ACCESS_KEY='XXX'
export AWS_EXPIRATION_DATE='1970-01-01T01:00:00Z'
export AWS_ACCESS_KEY_ID='XXX'
The following examples work in zsh, to add and remove them from your
environment:
Adding credentials:
.. code-block:: console
$ eval $(afp --export <accountname>)
Removing them again:
.. code-block:: console
$ env | grep AWS | cut -f 1 -d'=' | while read line ; do ; unset $line ; done ;
Write to AWS Credentials File
-----------------------------
The AWS tools read credentials specified with ``aws configure`` from a local
file named ``credentials`` in a folder named ``.aws`` in your home directory.
The afp-cli tool can write your temporary credentials to this file.
.. code-block:: console
$ afp --write <myaccount> [<myrole>]
Configuration Settings and Precedence
-------------------------------------
Please read the section on `Configuration Settings and Precedence
<https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html#config-settings-and-precedence>`_
from the AWS documentation.
Interface with the System Keyring
---------------------------------
Starting with version ``1.3.0``, experimental support for the `Python keyring
module <https://pypi.python.org/pypi/keyring>`_ has been implemented. This has
been tested with the Gnome Keyring and Max OS X Keychain but supposedly also
works with Windows Credential Vault. You can configure this feature using the
config file as shown above or with a command-line switch.
Example command-line:
.. code-block:: console
$ afp --password-provider keyring
No password found in keychain, please enter it now to store it.
Password for user:
You will be prompted for your password the first time. Note
that if you fail to enter the password correctly, the incorrect version will be
stored. Note further that if you are using the Gnome-Keychain you can use the
tool ``seahorse`` to update and delete saved passwords, in this case for the
service ``afp``.
Keyring on MacOS X
~~~~~~~~~~~~~~~~~~
On some MacOS systems, storing the password works fine, but fetching it fails with `Can't fetch password from system <https://github.com/ImmobilienScout24/afp-cli/issues/65>`_. This is due to a `change in the 'keyring' module <https://github.com/jaraco/keyring/issues/219>`_, introduced in version 9.0. As a workaround, downgrade to the previous version with ``pip install keyring==8.7``
Keyring with Gnome-Keychain
~~~~~~~~~~~~~~~~~~~~~~~~~~~
There is an intricate caveat when using the ``keyring`` module with
Gnome-Keychain. But before discussing this, it is important to mention that
the keyring module uses another module, namely ``secretstorage`` under the
hood.
In order for the ``keyring`` module to correctly use the Gnome Keychain the
Python module `PyGObject aka gi
<https://wiki.gnome.org/action/show/Projects/PyGObject?action=show&redirect=PyGObject>`_
is required. As stated on the project website: "PyGObject is a Python extension
module that gives clean and consistent access to the entire GNOME software
platform through the use of GObject Introspection." Now, unfortunately, even
though this project is `available on PyPi
<https://pypi.python.org/pypi/PyGObject>`_ it can not be installed from there
using ``pip`` due to issues with the build system. It is however available as a
system package for Ubuntu distributions as ``python-gi``.
Long story short, in order to use the ``keyring`` module from ``afp-cli`` you need to have
the ``gi`` module available to your Python interpreter. You can achieve this,
for example, by doing a global install of ``afp-cli`` using something like
``sudo pip install afp-cli`` or install it into a virtual environment that uses
the system site packages because it has been created with the
``--system-site-packages`` flag. In case the ``gi`` module is not available and
you try to use the ``keyring`` module anyway, ``afp-cli`` will exit with an
appropriate error message. Lastly, if in doubt, you can use the ``--debug``
switch to check at runtime which backend was selected.
License
=======
Copyright 2015,2016 Immobilien Scout GmbH
Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of the
License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed
under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
See Also
========
See Hologram_ for another solution that brings temporary AWS credentials onto
developer desktops.
.. _Hologram: https://github.com/AdRoll/hologram
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