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win_pki.py
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# -*- coding: utf-8 -*-
'''
Microsoft certificate management via the Pki PowerShell module.
:platform: Windows
.. versionadded:: 2016.11.0
'''
# Import python libs
from __future__ import absolute_import
import json
import logging
# Import salt libs
from salt.exceptions import SaltInvocationError
import ast
import os
import salt.utils
import salt.utils.powershell
_DEFAULT_CONTEXT = 'LocalMachine'
_DEFAULT_FORMAT = 'cer'
_DEFAULT_STORE = 'My'
_LOG = logging.getLogger(__name__)
# Define the module's virtual name
__virtualname__ = 'win_pki'
def __virtual__():
'''
Only works on Windows systems with the PKI PowerShell module installed.
'''
if not salt.utils.is_windows():
return False, 'Only available on Windows Systems'
if not __salt__['cmd.shell_info']('powershell')['installed']:
return False, 'Powershell not available'
if not salt.utils.powershell.module_exists('PKI'):
return False, 'PowerShell PKI module not available'
return __virtualname__
def _cmd_run(cmd, as_json=False):
'''
Ensure that the Pki module is loaded, and convert to and extract data from
Json as needed.
'''
cmd_full = ['Import-Module -Name PKI; ']
if as_json:
cmd_full.append(r'ConvertTo-Json -Compress -Depth 4 -InputObject '
r'@({0})'.format(cmd))
else:
cmd_full.append(cmd)
cmd_ret = __salt__['cmd.run_all'](
str().join(cmd_full), shell='powershell', python_shell=True)
if cmd_ret['retcode'] != 0:
_LOG.error('Unable to execute command: %s\nError: %s', cmd,
cmd_ret['stderr'])
if as_json:
try:
items = json.loads(cmd_ret['stdout'], strict=False)
return items
except ValueError:
_LOG.error('Unable to parse return data as Json.')
return cmd_ret['stdout']
def _validate_cert_path(name):
'''
Ensure that the certificate path, as determind from user input, is valid.
'''
cmd = r"Test-Path -Path '{0}'".format(name)
if not ast.literal_eval(_cmd_run(cmd=cmd)):
raise SaltInvocationError(r"Invalid path specified: {0}".format(name))
def _validate_cert_format(name):
'''
Ensure that the certificate format, as determind from user input, is valid.
'''
cert_formats = ['cer', 'pfx']
if name not in cert_formats:
message = ("Invalid certificate format '{0}' specified. Valid formats:"
' {1}').format(name, cert_formats)
raise SaltInvocationError(message)
def get_stores():
'''
Get the certificate location contexts and their corresponding stores.
:return: A dictionary of the certificate location contexts and stores.
:rtype: dict
CLI Example:
.. code-block:: bash
salt '*' win_pki.get_stores
'''
ret = dict()
cmd = r"Get-ChildItem -Path 'Cert:\' | " \
r"Select-Object LocationName, StoreNames"
items = _cmd_run(cmd=cmd, as_json=True)
for item in items:
ret[item['LocationName']] = list()
for store in item['StoreNames']:
ret[item['LocationName']].append(store)
return ret
def get_certs(context=_DEFAULT_CONTEXT, store=_DEFAULT_STORE):
'''
Get the available certificates in the given store.
:param str context: The name of the certificate store location context.
:param str store: The name of the certificate store.
:return: A dictionary of the certificate thumbprints and properties.
:rtype: dict
CLI Example:
.. code-block:: bash
salt '*' win_pki.get_certs
'''
ret = dict()
cmd = list()
blacklist_keys = ['DnsNameList']
store_path = r'Cert:\{0}\{1}'.format(context, store)
_validate_cert_path(name=store_path)
cmd.append(r"Get-ChildItem -Path '{0}' | Select-Object".format(store_path))
cmd.append(' DnsNameList, SerialNumber, Subject, Thumbprint, Version')
items = _cmd_run(cmd=str().join(cmd), as_json=True)
for item in items:
cert_info = dict()
for key in item:
if key not in blacklist_keys:
cert_info[key.lower()] = item[key]
cert_info['dnsnames'] = [name['Unicode'] for name in item['DnsNameList']]
ret[item['Thumbprint']] = cert_info
return ret
def get_cert_file(name, cert_format=_DEFAULT_FORMAT, password=''):
'''
Get the details of the certificate file.
:param str name: The filesystem path of the certificate file.
:param str cert_format: The certificate format. Specify 'cer' for X.509, or
'pfx' for PKCS #12.
:param str password: The password of the certificate. Only applicable to pfx
format. Note that if used interactively, the password will be seen by all minions.
To protect the password, use a state and get the password from pillar.
:return: A dictionary of the certificate thumbprints and properties.
:rtype: dict
CLI Example:
.. code-block:: bash
salt '*' win_pki.get_cert_file name='C:\\certs\\example.cer'
'''
ret = dict()
cmd = list()
blacklist_keys = ['DnsNameList']
cert_format = cert_format.lower()
_validate_cert_format(name=cert_format)
if not name or not os.path.isfile(name):
_LOG.error('Path is not present: %s', name)
return ret
if cert_format == 'pfx':
if password:
cmd.append('$CertObject = New-Object')
cmd.append(' System.Security.Cryptography.X509Certificates.X509Certificate2;')
cmd.append(r" $CertObject.Import('{0}'".format(name))
cmd.append(",'{0}'".format(password))
cmd.append(",'DefaultKeySet') ; $CertObject")
cmd.append(' | Select-Object DnsNameList, SerialNumber, Subject, '
'Thumbprint, Version')
else:
cmd.append(r"Get-PfxCertificate -FilePath '{0}'".format(name))
cmd.append(' | Select-Object DnsNameList, SerialNumber, Subject, '
'Thumbprint, Version')
else:
cmd.append('$CertObject = New-Object')
cmd.append(' System.Security.Cryptography.X509Certificates.X509Certificate2;')
cmd.append(r" $CertObject.Import('{0}'); $CertObject".format(name))
cmd.append(' | Select-Object DnsNameList, SerialNumber, Subject, '
'Thumbprint, Version')
items = _cmd_run(cmd=str().join(cmd), as_json=True)
for item in items:
for key in item:
if key not in blacklist_keys:
ret[key.lower()] = item[key]
ret['dnsnames'] = [name['Unicode'] for name in item['DnsNameList']]
if ret:
_LOG.debug('Certificate thumbprint obtained successfully: %s', name)
else:
_LOG.error('Unable to obtain certificate thumbprint: %s', name)
return ret
def import_cert(name,
cert_format=_DEFAULT_FORMAT,
context=_DEFAULT_CONTEXT,
store=_DEFAULT_STORE,
exportable=True,
password='',
saltenv='base'):
'''
Import the certificate file into the given certificate store.
:param str name: The path of the certificate file to import.
:param str cert_format: The certificate format. Specify 'cer' for X.509, or
'pfx' for PKCS #12.
:param str context: The name of the certificate store location context.
:param str store: The name of the certificate store.
:param bool exportable: Mark the certificate as exportable. Only applicable
to pfx format.
:param str password: The password of the certificate. Only applicable to pfx
format. Note that if used interactively, the password will be seen by all minions.
To protect the password, use a state and get the password from pillar.
:param str saltenv: The environment the file resides in.
:return: A boolean representing whether all changes succeeded.
:rtype: bool
CLI Example:
.. code-block:: bash
salt '*' win_pki.import_cert name='salt://cert.cer'
'''
cmd = list()
thumbprint = None
store_path = r'Cert:\{0}\{1}'.format(context, store)
cert_format = cert_format.lower()
_validate_cert_format(name=cert_format)
cached_source_path = __salt__['cp.cache_file'](name, saltenv)
if not cached_source_path:
_LOG.error('Unable to get cached copy of file: %s', name)
return False
if password:
cert_props = get_cert_file(name=cached_source_path, cert_format=cert_format, password=password)
else:
cert_props = get_cert_file(name=cached_source_path, cert_format=cert_format)
current_certs = get_certs(context=context, store=store)
if cert_props['thumbprint'] in current_certs:
_LOG.debug("Certificate thumbprint '%s' already present in store: %s",
cert_props['thumbprint'], store_path)
return True
if cert_format == 'pfx':
# In instances where an empty password is needed, we use a
# System.Security.SecureString object since ConvertTo-SecureString will
# not convert an empty string.
if password:
cmd.append(r"$Password = ConvertTo-SecureString "
r"-String '{0}'".format(password))
cmd.append(' -AsPlainText -Force; ')
else:
cmd.append('$Password = New-Object System.Security.SecureString; ')
cmd.append(r"Import-PfxCertificate "
r"-FilePath '{0}'".format(cached_source_path))
cmd.append(r" -CertStoreLocation '{0}'".format(store_path))
cmd.append(r" -Password $Password")
if exportable:
cmd.append(' -Exportable')
else:
cmd.append(r"Import-Certificate "
r"-FilePath '{0}'".format(cached_source_path))
cmd.append(r" -CertStoreLocation '{0}'".format(store_path))
_cmd_run(cmd=str().join(cmd))
new_certs = get_certs(context=context, store=store)
for new_cert in new_certs:
if new_cert not in current_certs:
thumbprint = new_cert
if thumbprint:
_LOG.debug('Certificate imported successfully: %s', name)
return True
_LOG.error('Unable to import certificate: %s', name)
return False
def export_cert(name,
thumbprint,
cert_format=_DEFAULT_FORMAT,
context=_DEFAULT_CONTEXT,
store=_DEFAULT_STORE,
password=''):
'''
Export the certificate to a file from the given certificate store.
:param str name: The destination path for the exported certificate file.
:param str thumbprint: The thumbprint value of the target certificate.
:param str cert_format: The certificate format. Specify 'cer' for X.509, or
'pfx' for PKCS #12.
:param str context: The name of the certificate store location context.
:param str store: The name of the certificate store.
:param str password: The password of the certificate. Only applicable to pfx
format. Note that if used interactively, the password will be seen by all minions.
To protect the password, use a state and get the password from pillar.
:return: A boolean representing whether all changes succeeded.
:rtype: bool
CLI Example:
.. code-block:: bash
salt '*' win_pki.export_cert name='C:\\certs\\example.cer' thumbprint='AAA000'
'''
cmd = list()
thumbprint = thumbprint.upper()
cert_path = r'Cert:\{0}\{1}\{2}'.format(context, store, thumbprint)
cert_format = cert_format.lower()
_validate_cert_path(name=cert_path)
_validate_cert_format(name=cert_format)
if cert_format == 'pfx':
# In instances where an empty password is needed, we use a
# System.Security.SecureString object since ConvertTo-SecureString will
# not convert an empty string.
if password:
cmd.append(r"$Password = ConvertTo-SecureString "
r"-String '{0}'".format(password))
cmd.append(' -AsPlainText -Force; ')
else:
cmd.append('$Password = New-Object System.Security.SecureString; ')
cmd.append(r"Export-PfxCertificate "
r"-Cert '{0}' -FilePath '{1}'".format(cert_path, name))
cmd.append(r" -Password $Password")
else:
cmd.append(r"Export-Certificate "
r"-Cert '{0}' -FilePath '{1}'".format(cert_path, name))
cmd.append(r" | Out-Null; Test-Path -Path '{0}'".format(name))
ret = ast.literal_eval(_cmd_run(cmd=str().join(cmd)))
if ret:
_LOG.debug('Certificate exported successfully: %s', name)
else:
_LOG.error('Unable to export certificate: %s', name)
return ret
def test_cert(thumbprint,
context=_DEFAULT_CONTEXT,
store=_DEFAULT_STORE,
untrusted_root=False,
dns_name='',
eku=''):
'''
Check the certificate for validity.
:param str thumbprint: The thumbprint value of the target certificate.
:param str context: The name of the certificate store location context.
:param str store: The name of the certificate store.
:param bool untrusted_root: Whether the root certificate is required to be
trusted in chain building.
:param str dns_name: The DNS name to verify as valid for the certificate.
:param str eku: The enhanced key usage object identifiers to verify for the
certificate chain.
:return: A boolean representing whether the certificate was considered
valid.
:rtype: bool
CLI Example:
.. code-block:: bash
salt '*' win_pki.test_cert thumbprint='AAA000' dns_name='example.test'
'''
cmd = list()
thumbprint = thumbprint.upper()
cert_path = r'Cert:\{0}\{1}\{2}'.format(context, store, thumbprint)
cmd.append(r"Test-Certificate -Cert '{0}'".format(cert_path))
_validate_cert_path(name=cert_path)
if untrusted_root:
cmd.append(' -AllowUntrustedRoot')
if dns_name:
cmd.append(" -DnsName '{0}'".format(dns_name))
if eku:
cmd.append(" -EKU '{0}'".format(eku))
cmd.append(' -ErrorAction SilentlyContinue')
return ast.literal_eval(_cmd_run(cmd=str().join(cmd)))
def remove_cert(thumbprint, context=_DEFAULT_CONTEXT, store=_DEFAULT_STORE):
'''
Remove the certificate from the given certificate store.
:param str thumbprint: The thumbprint value of the target certificate.
:param str context: The name of the certificate store location context.
:param str store: The name of the certificate store.
:return: A boolean representing whether all changes succeeded.
:rtype: bool
CLI Example:
.. code-block:: bash
salt '*' win_pki.remove_cert thumbprint='AAA000'
'''
thumbprint = thumbprint.upper()
store_path = r'Cert:\{0}\{1}'.format(context, store)
cert_path = r'{0}\{1}'.format(store_path, thumbprint)
cmd = r"Remove-Item -Path '{0}'".format(cert_path)
current_certs = get_certs(context=context, store=store)
if thumbprint not in current_certs:
_LOG.debug("Certificate '%s' already absent in store: %s", thumbprint,
store_path)
return True
_validate_cert_path(name=cert_path)
_cmd_run(cmd=cmd)
new_certs = get_certs(context=context, store=store)
if thumbprint in new_certs:
_LOG.error('Unable to remove certificate: %s', cert_path)
return False
_LOG.debug('Certificate removed successfully: %s', cert_path)
return True