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"""
Wheel system wrapper for the Salt key system to be used in interactions with
the Salt Master programmatically.
The key module for the wheel system is meant to provide an internal interface
for other Salt systems to interact with the Salt Master. The following usage
examples assume that a WheelClient is available:
.. code-block:: python
import salt.config
import salt.wheel
opts = salt.config.master_config('/etc/salt/master')
wheel = salt.wheel.WheelClient(opts)
Note that importing and using the ``WheelClient`` must be performed on the same
machine as the Salt Master and as the same user that runs the Salt Master,
unless :conf_master:`external_auth` is configured and the user is authorized
to execute wheel functions.
The function documentation starts with the ``wheel`` reference from the code
sample above and use the :py:class:`WheelClient` functions to show how they can
be called from a Python interpreter.
The wheel key functions can also be called via a ``salt`` command at the CLI
using the :mod:`saltutil execution module <salt.modules.saltutil>`.
"""
import hashlib
import logging
import os
import salt.crypt
import salt.key
import salt.utils.crypt
import salt.utils.files
import salt.utils.platform
from salt.utils.sanitizers import clean
__func_alias__ = {
"list_": "list",
"key_str": "print",
}
log = logging.getLogger(__name__)
def list_(match):
"""
List all the keys under a named status. Returns a dictionary.
match
The type of keys to list. The ``pre``, ``un``, and ``unaccepted``
options will list unaccepted/unsigned keys. ``acc`` or ``accepted`` will
list accepted/signed keys. ``rej`` or ``rejected`` will list rejected keys.
Finally, ``all`` will list all keys.
.. code-block:: python
>>> wheel.cmd('key.list', ['accepted'])
{'minions': ['minion1', 'minion2', 'minion3']}
"""
with salt.key.get_key(__opts__) as skey:
return skey.list_status(match)
def list_all():
"""
List all the keys. Returns a dictionary containing lists of the minions in
each salt-key category, including ``minions``, ``minions_rejected``,
``minions_denied``, etc. Returns a dictionary.
.. code-block:: python
>>> wheel.cmd('key.list_all')
{'local': ['master.pem', 'master.pub'], 'minions_rejected': [],
'minions_denied': [], 'minions_pre': [],
'minions': ['minion1', 'minion2', 'minion3']}
"""
with salt.key.get_key(__opts__) as skey:
return skey.all_keys()
def name_match(match):
"""
List all the keys based on a glob match
"""
with salt.key.get_key(__opts__) as skey:
return skey.name_match(match)
def accept(match, include_rejected=False, include_denied=False):
"""
Accept keys based on a glob match. Returns a dictionary.
match
The glob match of keys to accept.
include_rejected
To include rejected keys in the match along with pending keys, set this
to ``True``. Defaults to ``False``.
include_denied
To include denied keys in the match along with pending keys, set this
to ``True``. Defaults to ``False``.
.. code-block:: python
>>> wheel.cmd('key.accept', ['minion1'])
{'minions': ['minion1']}
"""
with salt.key.get_key(__opts__) as skey:
return skey.accept(
match, include_rejected=include_rejected, include_denied=include_denied
)
def accept_dict(match, include_rejected=False, include_denied=False):
"""
Accept keys based on a dict of keys. Returns a dictionary.
match
The dictionary of keys to accept.
include_rejected
To include rejected keys in the match along with pending keys, set this
to ``True``. Defaults to ``False``.
.. versionadded:: 2016.3.4
include_denied
To include denied keys in the match along with pending keys, set this
to ``True``. Defaults to ``False``.
.. versionadded:: 2016.3.4
Example to move a list of keys from the ``minions_pre`` (pending) directory
to the ``minions`` (accepted) directory:
.. code-block:: python
>>> wheel.cmd('key.accept_dict',
{
'minions_pre': [
'jerry',
'stuart',
'bob',
],
})
{'minions': ['jerry', 'stuart', 'bob']}
"""
with salt.key.get_key(__opts__) as skey:
return skey.accept(
match_dict=match,
include_rejected=include_rejected,
include_denied=include_denied,
)
def delete(match):
"""
Delete keys based on a glob match. Returns a dictionary.
match
The glob match of keys to delete.
.. code-block:: python
>>> wheel.cmd_async({'fun': 'key.delete', 'match': 'minion1'})
{'jid': '20160826201244808521', 'tag': 'salt/wheel/20160826201244808521'}
"""
with salt.key.get_key(__opts__) as skey:
return skey.delete_key(match)
def delete_dict(match):
"""
Delete keys based on a dict of keys. Returns a dictionary.
match
The dictionary of keys to delete.
.. code-block:: python
>>> wheel.cmd_async({'fun': 'key.delete_dict',
'match': {
'minions': [
'jerry',
'stuart',
'bob',
],
}})
{'jid': '20160826201244808521', 'tag': 'salt/wheel/20160826201244808521'}
"""
with salt.key.get_key(__opts__) as skey:
return skey.delete_key(match_dict=match)
def reject(match, include_accepted=False, include_denied=False):
"""
Reject keys based on a glob match. Returns a dictionary.
match
The glob match of keys to reject.
include_accepted
To include accepted keys in the match along with pending keys, set this
to ``True``. Defaults to ``False``.
include_denied
To include denied keys in the match along with pending keys, set this
to ``True``. Defaults to ``False``.
.. code-block:: python
>>> wheel.cmd_async({'fun': 'key.reject', 'match': 'minion1'})
{'jid': '20160826201244808521', 'tag': 'salt/wheel/20160826201244808521'}
"""
with salt.key.get_key(__opts__) as skey:
return skey.reject(
match, include_accepted=include_accepted, include_denied=include_denied
)
def reject_dict(match, include_accepted=False, include_denied=False):
"""
Reject keys based on a dict of keys. Returns a dictionary.
match
The dictionary of keys to reject.
include_accepted
To include accepted keys in the match along with pending keys, set this
to ``True``. Defaults to ``False``.
.. versionadded:: 2016.3.4
include_denied
To include denied keys in the match along with pending keys, set this
to ``True``. Defaults to ``False``.
.. versionadded:: 2016.3.4
.. code-block:: python
>>> wheel.cmd_async({'fun': 'key.reject_dict',
'match': {
'minions': [
'jerry',
'stuart',
'bob',
],
}})
{'jid': '20160826201244808521', 'tag': 'salt/wheel/20160826201244808521'}
"""
with salt.key.get_key(__opts__) as skey:
return skey.reject(
match_dict=match,
include_accepted=include_accepted,
include_denied=include_denied,
)
def key_str(match):
r"""
Return information about the key. Returns a dictionary.
match
The key to return information about.
.. code-block:: python
>>> wheel.cmd('key.print', ['minion1'])
{'minions': {'minion1': '-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0B
...
TWugEQpPt\niQIDAQAB\n-----END PUBLIC KEY-----'}}
"""
with salt.key.get_key(__opts__) as skey:
return skey.key_str(match)
def master_key_str():
r"""
Returns master's public key. Returns a dictionary
.. code-block:: python
>>> wheel.cmd('key.master_key_str')
{'local': {'master.pub': '-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0B
...
TWugEQpPt\niQIDAQAB\n-----END PUBLIC KEY-----'}}
"""
keyname = "master.pub"
path_to_pubkey = os.path.join(__opts__["pki_dir"], keyname)
with salt.utils.files.fopen(path_to_pubkey, "r") as fp_:
keyvalue = salt.utils.stringutils.to_unicode(fp_.read())
return {"local": {keyname: keyvalue}}
def finger(match, hash_type=None):
"""
Return the matching key fingerprints. Returns a dictionary.
match
The key for with to retrieve the fingerprint.
hash_type
The hash algorithm used to calculate the fingerprint
.. code-block:: python
>>> wheel.cmd('key.finger', ['minion1'])
{'minions': {'minion1': '5d:f6:79:43:5e:d4:42:3f:57:b8:45:a8:7e:a4:6e:ca'}}
"""
if hash_type is None:
hash_type = __opts__["hash_type"]
with salt.key.get_key(__opts__) as skey:
return skey.finger(match, hash_type)
def finger_master(hash_type=None):
"""
Return the fingerprint of the master's public key
hash_type
The hash algorithm used to calculate the fingerprint
.. code-block:: python
>>> wheel.cmd('key.finger_master')
{'local': {'master.pub': '5d:f6:79:43:5e:d4:42:3f:57:b8:45:a8:7e:a4:6e:ca'}}
"""
keyname = "master.pub"
if hash_type is None:
hash_type = __opts__["hash_type"]
fingerprint = salt.utils.crypt.pem_finger(
os.path.join(__opts__["pki_dir"], keyname), sum_type=hash_type
)
return {"local": {keyname: fingerprint}}
def gen(id_=None, keysize=2048):
r"""
Generate a key pair. No keys are stored on the master. A key pair is
returned as a dict containing pub and priv keys. Returns a dictionary
containing the ``pub`` and ``priv`` keys with their generated values.
id\_
Set a name to generate a key pair for use with salt. If not specified,
a random name will be specified.
keysize
The size of the key pair to generate. The size must be ``2048``, which
is the default, or greater. If set to a value less than ``2048``, the
key size will be rounded up to ``2048``.
.. code-block:: python
>>> wheel.cmd('key.gen')
{'pub': '-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBC
...
BBPfamX9gGPQTpN9e8HwcZjXQnmg8OrcUl10WHw09SDWLOlnW+ueTWugEQpPt\niQIDAQAB\n
-----END PUBLIC KEY-----',
'priv': '-----BEGIN RSA PRIVATE KEY-----\nMIIEpAIBAAKCAQEA42Kf+w9XeZWgguzv
...
QH3/W74X1+WTBlx4R2KGLYBiH+bCCFEQ/Zvcu4Xp4bIOPtRKozEQ==\n
-----END RSA PRIVATE KEY-----'}
"""
if id_ is None:
id_ = hashlib.sha512(os.urandom(32)).hexdigest()
else:
id_ = clean.filename(id_)
ret = {"priv": "", "pub": ""}
priv = salt.crypt.gen_keys(__opts__["pki_dir"], id_, keysize)
pub = "{}.pub".format(priv[: priv.rindex(".")])
with salt.utils.files.fopen(priv) as fp_:
ret["priv"] = salt.utils.stringutils.to_unicode(fp_.read())
with salt.utils.files.fopen(pub) as fp_:
ret["pub"] = salt.utils.stringutils.to_unicode(fp_.read())
# The priv key is given the Read-Only attribute. The causes `os.remove` to
# fail in Windows.
if salt.utils.platform.is_windows():
os.chmod(priv, 128)
os.remove(priv)
os.remove(pub)
return ret
def gen_accept(id_, keysize=2048, force=False):
r"""
Generate a key pair then accept the public key. This function returns the
key pair in a dict, only the public key is preserved on the master. Returns
a dictionary.
id\_
The name of the minion for which to generate a key pair.
keysize
The size of the key pair to generate. The size must be ``2048``, which
is the default, or greater. If set to a value less than ``2048``, the
key size will be rounded up to ``2048``.
force
If a public key has already been accepted for the given minion on the
master, then the gen_accept function will return an empty dictionary
and not create a new key. This is the default behavior. If ``force``
is set to ``True``, then the minion's previously accepted key will be
overwritten.
.. code-block:: python
>>> wheel.cmd('key.gen_accept', ['foo'])
{'pub': '-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBC
...
BBPfamX9gGPQTpN9e8HwcZjXQnmg8OrcUl10WHw09SDWLOlnW+ueTWugEQpPt\niQIDAQAB\n
-----END PUBLIC KEY-----',
'priv': '-----BEGIN RSA PRIVATE KEY-----\nMIIEpAIBAAKCAQEA42Kf+w9XeZWgguzv
...
QH3/W74X1+WTBlx4R2KGLYBiH+bCCFEQ/Zvcu4Xp4bIOPtRKozEQ==\n
-----END RSA PRIVATE KEY-----'}
We can now see that the ``foo`` minion's key has been accepted by the master:
.. code-block:: python
>>> wheel.cmd('key.list', ['accepted'])
{'minions': ['foo', 'minion1', 'minion2', 'minion3']}
"""
id_ = clean.id(id_)
ret = gen(id_, keysize)
acc_path = os.path.join(__opts__["pki_dir"], "minions", id_)
if os.path.isfile(acc_path) and not force:
return {}
with salt.utils.files.fopen(acc_path, "w+") as fp_:
fp_.write(salt.utils.stringutils.to_str(ret["pub"]))
return ret
def gen_keys(keydir=None, keyname=None, keysize=None, user=None):
"""
Generate minion RSA public keypair
"""
with salt.key.get_key(__opts__) as skey:
return skey.gen_keys(keydir, keyname, keysize, user)
def gen_signature(priv, pub, signature_path, auto_create=False, keysize=None):
"""
Generate master public-key-signature
"""
with salt.key.get_key(__opts__) as skey:
return skey.gen_keys_signature(priv, pub, signature_path, auto_create, keysize)