961 lines
40 KiB
Python
961 lines
40 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2016 Michael Gruener <michael.gruener@chaosmoon.net>
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = '''
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---
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module: acme_certificate
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author: "Michael Gruener (@mgruener)"
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version_added: "2.2"
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short_description: Create SSL/TLS certificates with the ACME protocol
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description:
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- "Create and renew SSL/TLS certificates with a CA supporting the
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L(ACME protocol,https://tools.ietf.org/html/draft-ietf-acme-acme-14),
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such as L(Let's Encrypt,https://letsencrypt.org/). The current
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implementation supports the C(http-01), C(dns-01) and C(tls-alpn-01)
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challenges."
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- "To use this module, it has to be executed twice. Either as two
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different tasks in the same run or during two runs. Note that the output
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of the first run needs to be recorded and passed to the second run as the
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module argument C(data)."
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- "Between these two tasks you have to fulfill the required steps for the
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chosen challenge by whatever means necessary. For C(http-01) that means
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creating the necessary challenge file on the destination webserver. For
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C(dns-01) the necessary dns record has to be created. For C(tls-alpn-01)
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the necessary certificate has to be created and served.
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It is I(not) the responsibility of this module to perform these steps."
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- "For details on how to fulfill these challenges, you might have to read through
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L(the main ACME specification,https://tools.ietf.org/html/draft-ietf-acme-acme-14#section-8)
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and the L(TLS-ALPN-01 specification,https://tools.ietf.org/html/draft-ietf-acme-tls-alpn-05#section-3).
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Also, consider the examples provided for this module."
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notes:
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- "At least one of C(dest) and C(fullchain_dest) must be specified."
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- "This module includes basic account management functionality.
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If you want to have more control over your ACME account, use the M(acme_account)
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module and disable account management for this module using the C(modify_account)
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option."
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- "This module was called C(letsencrypt) before Ansible 2.6. The usage
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did not change."
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- "If you want to use the C(tls-alpn-01) challenge, you can use the
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M(acme_challenge_cert_helper) module to prepare the challenge certificate."
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- "You can use the M(certificate_complete_chain) module to find the root certificate
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for the returned fullchain."
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- "In case you want to debug problems, you might be interested in the M(acme_inspect)
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module."
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extends_documentation_fragment:
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- acme
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options:
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account_email:
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description:
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- "The email address associated with this account."
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- "It will be used for certificate expiration warnings."
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- "Note that when C(modify_account) is not set to C(no) and you also
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used the M(acme_account) module to specify more than one contact
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for your account, this module will update your account and restrict
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it to the (at most one) contact email address specified here."
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agreement:
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description:
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- "URI to a terms of service document you agree to when using the
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ACME v1 service at C(acme_directory)."
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- Default is latest gathered from C(acme_directory) URL.
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- This option will only be used when C(acme_version) is 1.
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terms_agreed:
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description:
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- "Boolean indicating whether you agree to the terms of service document."
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- "ACME servers can require this to be true."
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- This option will only be used when C(acme_version) is not 1.
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type: bool
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default: 'no'
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version_added: "2.5"
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modify_account:
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description:
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- "Boolean indicating whether the module should create the account if
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necessary, and update its contact data."
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- "Set to C(no) if you want to use the M(acme_account) module to manage
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your account instead, and to avoid accidental creation of a new account
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using an old key if you changed the account key with M(acme_account)."
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- "If set to C(no), C(terms_agreed) and C(account_email) are ignored."
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type: bool
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default: 'yes'
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version_added: "2.6"
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challenge:
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description: The challenge to be performed.
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choices: [ 'http-01', 'dns-01', 'tls-alpn-01' ]
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default: 'http-01'
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csr:
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description:
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- "File containing the CSR for the new certificate."
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- "Can be created with C(openssl req ...)."
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- "The CSR may contain multiple Subject Alternate Names, but each one
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will lead to an individual challenge that must be fulfilled for the
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CSR to be signed."
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- "I(Note): the private key used to create the CSR I(must not) be the
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account key. This is a bad idea from a security point of view, and
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the CA should not accept the CSR. The ACME server should return an
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error in this case."
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required: true
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aliases: ['src']
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data:
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description:
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- "The data to validate ongoing challenges. This must be specified for
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the second run of the module only."
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- "The value that must be used here will be provided by a previous use
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of this module. See the examples for more details."
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- "Note that for ACME v2, only the C(order_uri) entry of C(data) will
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be used. For ACME v1, C(data) must be non-empty to indicate the
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second stage is active; all needed data will be taken from the
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CSR."
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- "I(Note): the C(data) option was marked as C(no_log) up to
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Ansible 2.5. From Ansible 2.6 on, it is no longer marked this way
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as it causes error messages to be come unusable, and C(data) does
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not contain any information which can be used without having
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access to the account key or which are not public anyway."
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dest:
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description:
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- "The destination file for the certificate."
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- "Required if C(fullchain_dest) is not specified."
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aliases: ['cert']
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fullchain_dest:
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description:
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- "The destination file for the full chain (i.e. certificate followed
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by chain of intermediate certificates)."
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- "Required if C(dest) is not specified."
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version_added: 2.5
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aliases: ['fullchain']
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chain_dest:
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description:
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- If specified, the intermediate certificate will be written to this file.
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aliases: ['chain']
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version_added: 2.5
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remaining_days:
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description:
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- "The number of days the certificate must have left being valid.
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If C(cert_days < remaining_days), then it will be renewed.
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If the certificate is not renewed, module return values will not
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include C(challenge_data)."
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- "To make sure that the certificate is renewed in any case, you can
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use the C(force) option."
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default: 10
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deactivate_authzs:
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description:
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- "Deactivate authentication objects (authz) after issuing a certificate,
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or when issuing the certificate failed."
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- "Authentication objects are bound to an account key and remain valid
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for a certain amount of time, and can be used to issue certificates
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without having to re-authenticate the domain. This can be a security
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concern."
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type: bool
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default: 'no'
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version_added: 2.6
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force:
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description:
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- Enforces the execution of the challenge and validation, even if an
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existing certificate is still valid for more than C(remaining_days).
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- This is especially helpful when having an updated CSR e.g. with
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additional domains for which a new certificate is desired.
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type: bool
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default: 'no'
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version_added: 2.6
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'''
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EXAMPLES = r'''
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### Example with HTTP challenge ###
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- name: Create a challenge for sample.com using a account key from a variable.
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acme_certificate:
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account_key_content: "{{ account_private_key }}"
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csr: /etc/pki/cert/csr/sample.com.csr
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dest: /etc/httpd/ssl/sample.com.crt
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register: sample_com_challenge
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# Alternative first step:
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- name: Create a challenge for sample.com using a account key from hashi vault.
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acme_certificate:
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account_key_content: "{{ lookup('hashi_vault', 'secret=secret/account_private_key:value') }}"
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csr: /etc/pki/cert/csr/sample.com.csr
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fullchain_dest: /etc/httpd/ssl/sample.com-fullchain.crt
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register: sample_com_challenge
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# Alternative first step:
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- name: Create a challenge for sample.com using a account key file.
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acme_certificate:
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account_key_src: /etc/pki/cert/private/account.key
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csr: /etc/pki/cert/csr/sample.com.csr
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dest: /etc/httpd/ssl/sample.com.crt
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fullchain_dest: /etc/httpd/ssl/sample.com-fullchain.crt
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register: sample_com_challenge
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# perform the necessary steps to fulfill the challenge
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# for example:
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#
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# - copy:
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# dest: /var/www/html/{{ sample_com_challenge['challenge_data']['sample.com']['http-01']['resource'] }}
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# content: "{{ sample_com_challenge['challenge_data']['sample.com']['http-01']['resource_value'] }}"
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# when: sample_com_challenge is changed
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- name: Let the challenge be validated and retrieve the cert and intermediate certificate
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acme_certificate:
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account_key_src: /etc/pki/cert/private/account.key
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csr: /etc/pki/cert/csr/sample.com.csr
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dest: /etc/httpd/ssl/sample.com.crt
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fullchain_dest: /etc/httpd/ssl/sample.com-fullchain.crt
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chain_dest: /etc/httpd/ssl/sample.com-intermediate.crt
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data: "{{ sample_com_challenge }}"
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### Example with DNS challenge against production ACME server ###
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- name: Create a challenge for sample.com using a account key file.
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acme_certificate:
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account_key_src: /etc/pki/cert/private/account.key
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account_email: myself@sample.com
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src: /etc/pki/cert/csr/sample.com.csr
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cert: /etc/httpd/ssl/sample.com.crt
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challenge: dns-01
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acme_directory: https://acme-v01.api.letsencrypt.org/directory
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# Renew if the certificate is at least 30 days old
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remaining_days: 60
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register: sample_com_challenge
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# perform the necessary steps to fulfill the challenge
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# for example:
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#
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# - route53:
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# zone: sample.com
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# record: "{{ sample_com_challenge.challenge_data['sample.com']['dns-01'].record }}"
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# type: TXT
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# ttl: 60
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# state: present
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# # Note: route53 requires TXT entries to be enclosed in quotes
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# value: "{{ sample_com_challenge.challenge_data['sample.com']['dns-01'].resource_value | regex_replace('^(.*)$', '\"\\1\"') }}"
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# when: sample_com_challenge is changed
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#
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# Alternative way:
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#
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# - route53:
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# zone: sample.com
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# record: "{{ item.key }}"
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# type: TXT
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# ttl: 60
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# state: present
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# # Note: item.value is a list of TXT entries, and route53
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# # requires every entry to be enclosed in quotes
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# value: "{{ item.value | map('regex_replace', '^(.*)$', '\"\\1\"' ) | list }}"
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# loop: "{{ sample_com_challenge.challenge_data_dns | dictsort }}"
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# when: sample_com_challenge is changed
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- name: Let the challenge be validated and retrieve the cert and intermediate certificate
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acme_certificate:
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account_key_src: /etc/pki/cert/private/account.key
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account_email: myself@sample.com
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src: /etc/pki/cert/csr/sample.com.csr
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cert: /etc/httpd/ssl/sample.com.crt
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fullchain: /etc/httpd/ssl/sample.com-fullchain.crt
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chain: /etc/httpd/ssl/sample.com-intermediate.crt
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challenge: dns-01
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acme_directory: https://acme-v01.api.letsencrypt.org/directory
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remaining_days: 60
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data: "{{ sample_com_challenge }}"
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'''
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RETURN = '''
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cert_days:
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description: the number of days the certificate remains valid.
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returned: success
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type: int
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challenge_data:
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description: per domain / challenge type challenge data
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returned: changed
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type: complex
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contains:
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resource:
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description: the challenge resource that must be created for validation
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returned: changed
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type: string
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sample: .well-known/acme-challenge/evaGxfADs6pSRb2LAv9IZf17Dt3juxGJ-PCt92wr-oA
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resource_value:
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description:
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- The value the resource has to produce for the validation.
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- For C(http-01) and C(dns-01) challenges, the value can be used as-is.
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- "For C(tls-alpn-01) challenges, note that this return value contains a
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Base64 encoded version of the correct binary blob which has to be put
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into the acmeValidation x509 extension; see
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U(https://tools.ietf.org/html/draft-ietf-acme-tls-alpn-05#section-3)
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for details. To do this, you might need the C(b64decode) Jinja filter
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to extract the binary blob from this return value."
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returned: changed
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type: string
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sample: IlirfxKKXA...17Dt3juxGJ-PCt92wr-oA
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record:
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description: the full DNS record's name for the challenge
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returned: changed and challenge is C(dns-01)
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type: string
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sample: _acme-challenge.example.com
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version_added: "2.5"
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challenge_data_dns:
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description: list of TXT values per DNS record, in case challenge is C(dns-01)
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returned: changed
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type: dict
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version_added: "2.5"
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authorizations:
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description: ACME authorization data.
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returned: changed
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type: complex
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contains:
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authorization:
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description: ACME authorization object. See U(https://tools.ietf.org/html/draft-ietf-acme-acme-14#section-7.1.4)
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returned: success
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type: dict
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order_uri:
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description: ACME order URI.
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returned: changed
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type: string
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version_added: "2.5"
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finalization_uri:
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description: ACME finalization URI.
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returned: changed
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type: string
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version_added: "2.5"
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account_uri:
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description: ACME account URI.
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returned: changed
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type: string
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version_added: "2.5"
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'''
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from ansible.module_utils.acme import (
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ModuleFailException, write_file, nopad_b64, pem_to_der, ACMEAccount,
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HAS_CURRENT_CRYPTOGRAPHY, cryptography_get_csr_domains, cryptography_get_cert_days,
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set_crypto_backend,
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)
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import base64
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import hashlib
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import locale
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import os
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import re
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import textwrap
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import time
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from datetime import datetime
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils._text import to_text, to_bytes
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def get_cert_days(module, cert_file):
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'''
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Return the days the certificate in cert_file remains valid and -1
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if the file was not found. If cert_file contains more than one
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certificate, only the first one will be considered.
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'''
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if HAS_CURRENT_CRYPTOGRAPHY:
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return cryptography_get_cert_days(module, cert_file)
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if not os.path.exists(cert_file):
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return -1
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openssl_bin = module.get_bin_path('openssl', True)
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openssl_cert_cmd = [openssl_bin, "x509", "-in", cert_file, "-noout", "-text"]
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dummy, out, dummy = module.run_command(openssl_cert_cmd, check_rc=True, encoding=None)
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try:
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not_after_str = re.search(r"\s+Not After\s*:\s+(.*)", out.decode('utf8')).group(1)
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not_after = datetime.fromtimestamp(time.mktime(time.strptime(not_after_str, '%b %d %H:%M:%S %Y %Z')))
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except AttributeError:
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raise ModuleFailException("No 'Not after' date found in {0}".format(cert_file))
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except ValueError:
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raise ModuleFailException("Failed to parse 'Not after' date of {0}".format(cert_file))
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now = datetime.utcnow()
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return (not_after - now).days
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class ACMEClient(object):
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'''
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ACME client class. Uses an ACME account object and a CSR to
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start and validate ACME challenges and download the respective
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certificates.
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'''
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def __init__(self, module):
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self.module = module
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self.version = module.params['acme_version']
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self.challenge = module.params['challenge']
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self.csr = module.params['csr']
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self.dest = module.params.get('dest')
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self.fullchain_dest = module.params.get('fullchain_dest')
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self.chain_dest = module.params.get('chain_dest')
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self.account = ACMEAccount(module)
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self.directory = self.account.directory
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self.data = module.params['data']
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self.authorizations = None
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self.cert_days = -1
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self.order_uri = self.data.get('order_uri') if self.data else None
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self.finalize_uri = None
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# Make sure account exists
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modify_account = module.params['modify_account']
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if modify_account or self.version > 1:
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contact = []
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if module.params['account_email']:
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contact.append('mailto:' + module.params['account_email'])
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created, account_data = self.account.setup_account(
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contact,
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agreement=module.params.get('agreement'),
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terms_agreed=module.params.get('terms_agreed'),
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allow_creation=modify_account,
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)
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if account_data is None:
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raise ModuleFailException(msg='Account does not exist or is deactivated.')
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updated = False
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if not created and account_data and modify_account:
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updated, account_data = self.account.update_account(account_data, contact)
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self.changed = created or updated
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else:
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# This happens if modify_account is False and the ACME v1
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# protocol is used. In this case, we do not call setup_account()
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# to avoid accidental creation of an account. This is OK
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# since for ACME v1, the account URI is not needed to send a
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# signed ACME request.
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pass
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# Extract list of domains from CSR
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if not os.path.exists(self.csr):
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raise ModuleFailException("CSR %s not found" % (self.csr))
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self._openssl_bin = module.get_bin_path('openssl', True)
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self.domains = self._get_csr_domains()
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def _get_csr_domains(self):
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'''
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Parse the CSR and return the list of requested domains
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'''
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if HAS_CURRENT_CRYPTOGRAPHY:
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return cryptography_get_csr_domains(self.module, self.csr)
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openssl_csr_cmd = [self._openssl_bin, "req", "-in", self.csr, "-noout", "-text"]
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dummy, out, dummy = self.module.run_command(openssl_csr_cmd, check_rc=True)
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domains = set([])
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common_name = re.search(r"Subject:.*? CN\s?=\s?([^\s,;/]+)", to_text(out, errors='surrogate_or_strict'))
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if common_name is not None:
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domains.add(common_name.group(1))
|
|
subject_alt_names = re.search(
|
|
r"X509v3 Subject Alternative Name: (?:critical)?\n +([^\n]+)\n",
|
|
to_text(out, errors='surrogate_or_strict'), re.MULTILINE | re.DOTALL)
|
|
if subject_alt_names is not None:
|
|
for san in subject_alt_names.group(1).split(", "):
|
|
if san.startswith("DNS:"):
|
|
domains.add(san[4:])
|
|
return domains
|
|
|
|
def _add_or_update_auth(self, domain, auth):
|
|
'''
|
|
Add or update the given authroization in the global authorizations list.
|
|
Return True if the auth was updated/added and False if no change was
|
|
necessary.
|
|
'''
|
|
if self.authorizations.get(domain) == auth:
|
|
return False
|
|
self.authorizations[domain] = auth
|
|
return True
|
|
|
|
def _new_authz_v1(self, domain):
|
|
'''
|
|
Create a new authorization for the given domain.
|
|
Return the authorization object of the new authorization
|
|
https://tools.ietf.org/html/draft-ietf-acme-acme-02#section-6.4
|
|
'''
|
|
if self.account.uri is None:
|
|
return
|
|
|
|
new_authz = {
|
|
"resource": "new-authz",
|
|
"identifier": {"type": "dns", "value": domain},
|
|
}
|
|
|
|
result, info = self.account.send_signed_request(self.directory['new-authz'], new_authz)
|
|
if info['status'] not in [200, 201]:
|
|
raise ModuleFailException("Error requesting challenges: CODE: {0} RESULT: {1}".format(info['status'], result))
|
|
else:
|
|
result['uri'] = info['location']
|
|
return result
|
|
|
|
def _get_challenge_data(self, auth, domain):
|
|
'''
|
|
Returns a dict with the data for all proposed (and supported) challenges
|
|
of the given authorization.
|
|
'''
|
|
|
|
data = {}
|
|
# no need to choose a specific challenge here as this module
|
|
# is not responsible for fulfilling the challenges. Calculate
|
|
# and return the required information for each challenge.
|
|
for challenge in auth['challenges']:
|
|
type = challenge['type']
|
|
token = re.sub(r"[^A-Za-z0-9_\-]", "_", challenge['token'])
|
|
keyauthorization = self.account.get_keyauthorization(token)
|
|
|
|
if type == 'http-01':
|
|
# https://tools.ietf.org/html/draft-ietf-acme-acme-14#section-8.3
|
|
resource = '.well-known/acme-challenge/' + token
|
|
data[type] = {'resource': resource, 'resource_value': keyauthorization}
|
|
elif type == 'dns-01':
|
|
# https://tools.ietf.org/html/draft-ietf-acme-acme-14#section-8.4
|
|
resource = '_acme-challenge'
|
|
value = nopad_b64(hashlib.sha256(to_bytes(keyauthorization)).digest())
|
|
record = (resource + domain[1:]) if domain.startswith('*.') else (resource + '.' + domain)
|
|
data[type] = {'resource': resource, 'resource_value': value, 'record': record}
|
|
elif type == 'tls-alpn-01':
|
|
# https://tools.ietf.org/html/draft-ietf-acme-tls-alpn-05#section-3
|
|
resource = domain
|
|
value = base64.b64encode(hashlib.sha256(to_bytes(keyauthorization)).digest())
|
|
data[type] = {'resource': resource, 'resource_value': value}
|
|
else:
|
|
continue
|
|
|
|
return data
|
|
|
|
def _fail_challenge(self, domain, auth, error):
|
|
'''
|
|
Aborts with a specific error for a challenge.
|
|
'''
|
|
error_details = ''
|
|
# multiple challenges could have failed at this point, gather error
|
|
# details for all of them before failing
|
|
for challenge in auth['challenges']:
|
|
if challenge['status'] == 'invalid':
|
|
error_details += ' CHALLENGE: {0}'.format(challenge['type'])
|
|
if 'error' in challenge:
|
|
error_details += ' DETAILS: {0};'.format(challenge['error']['detail'])
|
|
else:
|
|
error_details += ';'
|
|
raise ModuleFailException("{0}: {1}".format(error.format(domain), error_details))
|
|
|
|
def _validate_challenges(self, domain, auth):
|
|
'''
|
|
Validate the authorization provided in the auth dict. Returns True
|
|
when the validation was successful and False when it was not.
|
|
'''
|
|
for challenge in auth['challenges']:
|
|
if self.challenge != challenge['type']:
|
|
continue
|
|
|
|
uri = challenge['uri'] if self.version == 1 else challenge['url']
|
|
|
|
challenge_response = {}
|
|
if self.version == 1:
|
|
token = re.sub(r"[^A-Za-z0-9_\-]", "_", challenge['token'])
|
|
keyauthorization = self.account.get_keyauthorization(token)
|
|
challenge_response["resource"] = "challenge"
|
|
challenge_response["keyAuthorization"] = keyauthorization
|
|
result, info = self.account.send_signed_request(uri, challenge_response)
|
|
if info['status'] not in [200, 202]:
|
|
raise ModuleFailException("Error validating challenge: CODE: {0} RESULT: {1}".format(info['status'], result))
|
|
|
|
status = ''
|
|
|
|
while status not in ['valid', 'invalid', 'revoked']:
|
|
result, dummy = self.account.get_request(auth['uri'])
|
|
result['uri'] = auth['uri']
|
|
if self._add_or_update_auth(domain, result):
|
|
self.changed = True
|
|
# https://tools.ietf.org/html/draft-ietf-acme-acme-02#section-6.1.2
|
|
# "status (required, string): ...
|
|
# If this field is missing, then the default value is "pending"."
|
|
if self.version == 1 and 'status' not in result:
|
|
status = 'pending'
|
|
else:
|
|
status = result['status']
|
|
time.sleep(2)
|
|
|
|
if status == 'invalid':
|
|
self._fail_challenge(domain, result, 'Authorization for {0} returned invalid')
|
|
|
|
return status == 'valid'
|
|
|
|
def _finalize_cert(self):
|
|
'''
|
|
Create a new certificate based on the csr.
|
|
Return the certificate object as dict
|
|
https://tools.ietf.org/html/draft-ietf-acme-acme-14#section-7.4
|
|
'''
|
|
csr = pem_to_der(self.csr)
|
|
new_cert = {
|
|
"csr": nopad_b64(csr),
|
|
}
|
|
result, info = self.account.send_signed_request(self.finalize_uri, new_cert)
|
|
if info['status'] not in [200]:
|
|
raise ModuleFailException("Error new cert: CODE: {0} RESULT: {1}".format(info['status'], result))
|
|
|
|
order = info['location']
|
|
|
|
status = result['status']
|
|
while status not in ['valid', 'invalid']:
|
|
time.sleep(2)
|
|
result, dummy = self.account.get_request(order)
|
|
status = result['status']
|
|
|
|
if status != 'valid':
|
|
raise ModuleFailException("Error new cert: CODE: {0} STATUS: {1} RESULT: {2}".format(info['status'], status, result))
|
|
|
|
return result['certificate']
|
|
|
|
def _der_to_pem(self, der_cert):
|
|
'''
|
|
Convert the DER format certificate in der_cert to a PEM format
|
|
certificate and return it.
|
|
'''
|
|
return """-----BEGIN CERTIFICATE-----\n{0}\n-----END CERTIFICATE-----\n""".format(
|
|
"\n".join(textwrap.wrap(base64.b64encode(der_cert).decode('utf8'), 64)))
|
|
|
|
def _download_cert(self, url):
|
|
'''
|
|
Download and parse the certificate chain.
|
|
https://tools.ietf.org/html/draft-ietf-acme-acme-14#section-7.4.2
|
|
'''
|
|
content, info = self.account.get_request(url, parse_json_result=False, headers={'Accept': 'application/pem-certificate-chain'})
|
|
|
|
if not content or not info['content-type'].startswith('application/pem-certificate-chain'):
|
|
raise ModuleFailException("Cannot download certificate chain from {0}: {1} (headers: {2})".format(url, content, info))
|
|
|
|
cert = None
|
|
chain = []
|
|
|
|
# Parse data
|
|
lines = content.decode('utf-8').splitlines(True)
|
|
current = []
|
|
for line in lines:
|
|
if line.strip():
|
|
current.append(line)
|
|
if line.startswith('-----END CERTIFICATE-----'):
|
|
if cert is None:
|
|
cert = ''.join(current)
|
|
else:
|
|
chain.append(''.join(current))
|
|
current = []
|
|
|
|
# Process link-up headers if there was no chain in reply
|
|
if not chain and 'link' in info:
|
|
link = info['link']
|
|
parsed_link = re.match(r'<(.+)>;rel="(\w+)"', link)
|
|
if parsed_link and parsed_link.group(2) == "up":
|
|
chain_link = parsed_link.group(1)
|
|
chain_result, chain_info = self.account.get_request(chain_link, parse_json_result=False)
|
|
if chain_info['status'] in [200, 201]:
|
|
chain.append(self._der_to_pem(chain_result))
|
|
|
|
if cert is None or current:
|
|
raise ModuleFailException("Failed to parse certificate chain download from {0}: {1} (headers: {2})".format(url, content, info))
|
|
return {'cert': cert, 'chain': chain}
|
|
|
|
def _new_cert_v1(self):
|
|
'''
|
|
Create a new certificate based on the CSR (ACME v1 protocol).
|
|
Return the certificate object as dict
|
|
https://tools.ietf.org/html/draft-ietf-acme-acme-02#section-6.5
|
|
'''
|
|
csr = pem_to_der(self.csr)
|
|
new_cert = {
|
|
"resource": "new-cert",
|
|
"csr": nopad_b64(csr),
|
|
}
|
|
result, info = self.account.send_signed_request(self.directory['new-cert'], new_cert)
|
|
|
|
chain = []
|
|
if 'link' in info:
|
|
link = info['link']
|
|
parsed_link = re.match(r'<(.+)>;rel="(\w+)"', link)
|
|
if parsed_link and parsed_link.group(2) == "up":
|
|
chain_link = parsed_link.group(1)
|
|
chain_result, chain_info = self.account.get_request(chain_link, parse_json_result=False)
|
|
if chain_info['status'] in [200, 201]:
|
|
chain = [self._der_to_pem(chain_result)]
|
|
|
|
if info['status'] not in [200, 201]:
|
|
raise ModuleFailException("Error new cert: CODE: {0} RESULT: {1}".format(info['status'], result))
|
|
else:
|
|
return {'cert': self._der_to_pem(result), 'uri': info['location'], 'chain': chain}
|
|
|
|
def _new_order_v2(self):
|
|
'''
|
|
Start a new certificate order (ACME v2 protocol).
|
|
https://tools.ietf.org/html/draft-ietf-acme-acme-14#section-7.4
|
|
'''
|
|
identifiers = []
|
|
for domain in self.domains:
|
|
identifiers.append({
|
|
'type': 'dns',
|
|
'value': domain,
|
|
})
|
|
new_order = {
|
|
"identifiers": identifiers
|
|
}
|
|
result, info = self.account.send_signed_request(self.directory['newOrder'], new_order)
|
|
|
|
if info['status'] not in [201]:
|
|
raise ModuleFailException("Error new order: CODE: {0} RESULT: {1}".format(info['status'], result))
|
|
|
|
for auth_uri in result['authorizations']:
|
|
auth_data, dummy = self.account.get_request(auth_uri)
|
|
auth_data['uri'] = auth_uri
|
|
domain = auth_data['identifier']['value']
|
|
if auth_data.get('wildcard', False):
|
|
domain = '*.{0}'.format(domain)
|
|
self.authorizations[domain] = auth_data
|
|
|
|
self.order_uri = info['location']
|
|
self.finalize_uri = result['finalize']
|
|
|
|
def is_first_step(self):
|
|
'''
|
|
Return True if this is the first execution of this module, i.e. if a
|
|
sufficient data object from a first run has not been provided.
|
|
'''
|
|
if self.data is None:
|
|
return True
|
|
if self.version == 1:
|
|
# As soon as self.data is a non-empty object, we are in the second stage.
|
|
return not self.data
|
|
else:
|
|
# We are in the second stage if data.order_uri is given (which has been
|
|
# stored in self.order_uri by the constructor).
|
|
return self.order_uri is None
|
|
|
|
def start_challenges(self):
|
|
'''
|
|
Create new authorizations for all domains of the CSR,
|
|
respectively start a new order for ACME v2.
|
|
'''
|
|
self.authorizations = {}
|
|
if self.version == 1:
|
|
for domain in self.domains:
|
|
new_auth = self._new_authz_v1(domain)
|
|
self._add_or_update_auth(domain, new_auth)
|
|
else:
|
|
self._new_order_v2()
|
|
self.changed = True
|
|
|
|
def get_challenges_data(self):
|
|
'''
|
|
Get challenge details for the chosen challenge type.
|
|
Return a tuple of generic challenge details, and specialized DNS challenge details.
|
|
'''
|
|
# Get general challenge data
|
|
data = {}
|
|
for domain, auth in self.authorizations.items():
|
|
data[domain] = self._get_challenge_data(self.authorizations[domain], domain)
|
|
# Get DNS challenge data
|
|
data_dns = {}
|
|
if self.challenge == 'dns-01':
|
|
for domain, challenges in data.items():
|
|
if self.challenge in challenges:
|
|
values = data_dns.get(challenges[self.challenge]['record'])
|
|
if values is None:
|
|
values = []
|
|
data_dns[challenges[self.challenge]['record']] = values
|
|
values.append(challenges[self.challenge]['resource_value'])
|
|
return data, data_dns
|
|
|
|
def finish_challenges(self):
|
|
'''
|
|
Verify challenges for all domains of the CSR.
|
|
'''
|
|
self.authorizations = {}
|
|
|
|
# Step 1: obtain challenge information
|
|
if self.version == 1:
|
|
# For ACME v1, we attempt to create new authzs. Existing ones
|
|
# will be returned instead.
|
|
for domain in self.domains:
|
|
new_auth = self._new_authz_v1(domain)
|
|
self._add_or_update_auth(domain, new_auth)
|
|
else:
|
|
# For ACME v2, we obtain the order object by fetching the
|
|
# order URI, and extract the information from there.
|
|
result, info = self.account.get_request(self.order_uri)
|
|
|
|
if not result:
|
|
raise ModuleFailException("Cannot download order from {0}: {1} (headers: {2})".format(self.order_uri, result, info))
|
|
|
|
if info['status'] not in [200]:
|
|
raise ModuleFailException("Error on downloading order: CODE: {0} RESULT: {1}".format(info['status'], result))
|
|
|
|
for auth_uri in result['authorizations']:
|
|
auth_data, dummy = self.account.get_request(auth_uri)
|
|
auth_data['uri'] = auth_uri
|
|
domain = auth_data['identifier']['value']
|
|
if auth_data.get('wildcard', False):
|
|
domain = '*.{0}'.format(domain)
|
|
self.authorizations[domain] = auth_data
|
|
|
|
self.finalize_uri = result['finalize']
|
|
|
|
# Step 2: validate challenges
|
|
for domain, auth in self.authorizations.items():
|
|
if auth['status'] == 'pending':
|
|
self._validate_challenges(domain, auth)
|
|
|
|
def get_certificate(self):
|
|
'''
|
|
Request a new certificate and write it to the destination file.
|
|
First verifies whether all authorizations are valid; if not, aborts
|
|
with an error.
|
|
'''
|
|
for domain in self.domains:
|
|
auth = self.authorizations.get(domain)
|
|
if auth is None:
|
|
raise ModuleFailException('Found no authorization information for "{0}"!'.format(domain))
|
|
if 'status' not in auth:
|
|
self._fail_challenge(domain, auth, 'Authorization for {0} returned no status')
|
|
if auth['status'] != 'valid':
|
|
self._fail_challenge(domain, auth, 'Authorization for {0} returned status ' + str(auth['status']))
|
|
|
|
if self.version == 1:
|
|
cert = self._new_cert_v1()
|
|
else:
|
|
cert_uri = self._finalize_cert()
|
|
cert = self._download_cert(cert_uri)
|
|
|
|
if cert['cert'] is not None:
|
|
pem_cert = cert['cert']
|
|
|
|
chain = [link for link in cert.get('chain', [])]
|
|
|
|
if self.dest and write_file(self.module, self.dest, pem_cert.encode('utf8')):
|
|
self.cert_days = get_cert_days(self.module, self.dest)
|
|
self.changed = True
|
|
|
|
if self.fullchain_dest and write_file(self.module, self.fullchain_dest, (pem_cert + "\n".join(chain)).encode('utf8')):
|
|
self.cert_days = get_cert_days(self.module, self.fullchain_dest)
|
|
self.changed = True
|
|
|
|
if self.chain_dest and write_file(self.module, self.chain_dest, ("\n".join(chain)).encode('utf8')):
|
|
self.changed = True
|
|
|
|
def deactivate_authzs(self):
|
|
'''
|
|
Deactivates all valid authz's. Does not raise exceptions.
|
|
https://community.letsencrypt.org/t/authorization-deactivation/19860/2
|
|
https://tools.ietf.org/html/draft-ietf-acme-acme-14#section-7.5.2
|
|
'''
|
|
authz_deactivate = {
|
|
'status': 'deactivated'
|
|
}
|
|
if self.version == 1:
|
|
authz_deactivate['resource'] = 'authz'
|
|
if self.authorizations:
|
|
for domain in self.domains:
|
|
auth = self.authorizations.get(domain)
|
|
if auth is None or auth.get('status') != 'valid':
|
|
continue
|
|
try:
|
|
result, info = self.account.send_signed_request(auth['uri'], authz_deactivate)
|
|
if 200 <= info['status'] < 300 and result.get('status') == 'deactivated':
|
|
auth['status'] = 'deactivated'
|
|
except Exception as e:
|
|
# Ignore errors on deactivating authzs
|
|
pass
|
|
if auth.get('status') != 'deactivated':
|
|
self.module.warn(warning='Could not deactivate authz object {0}.'.format(auth['uri']))
|
|
|
|
|
|
def main():
|
|
module = AnsibleModule(
|
|
argument_spec=dict(
|
|
account_key_src=dict(type='path', aliases=['account_key']),
|
|
account_key_content=dict(type='str', no_log=True),
|
|
account_uri=dict(required=False, type='str'),
|
|
modify_account=dict(required=False, type='bool', default=True),
|
|
acme_directory=dict(required=False, default='https://acme-staging.api.letsencrypt.org/directory', type='str'),
|
|
acme_version=dict(required=False, default=1, choices=[1, 2], type='int'),
|
|
validate_certs=dict(required=False, default=True, type='bool'),
|
|
account_email=dict(required=False, default=None, type='str'),
|
|
agreement=dict(required=False, type='str'),
|
|
terms_agreed=dict(required=False, default=False, type='bool'),
|
|
challenge=dict(required=False, default='http-01', choices=['http-01', 'dns-01', 'tls-alpn-01'], type='str'),
|
|
csr=dict(required=True, aliases=['src'], type='path'),
|
|
data=dict(required=False, default=None, type='dict'),
|
|
dest=dict(aliases=['cert'], type='path'),
|
|
fullchain_dest=dict(aliases=['fullchain'], type='path'),
|
|
chain_dest=dict(required=False, default=None, aliases=['chain'], type='path'),
|
|
remaining_days=dict(required=False, default=10, type='int'),
|
|
deactivate_authzs=dict(required=False, default=False, type='bool'),
|
|
force=dict(required=False, default=False, type='bool'),
|
|
select_crypto_backend=dict(required=False, choices=['auto', 'openssl', 'cryptography'], default='auto', type='str'),
|
|
),
|
|
required_one_of=(
|
|
['account_key_src', 'account_key_content'],
|
|
['dest', 'fullchain_dest'],
|
|
),
|
|
mutually_exclusive=(
|
|
['account_key_src', 'account_key_content'],
|
|
),
|
|
supports_check_mode=True,
|
|
)
|
|
if module._name == 'letsencrypt':
|
|
module.deprecate("The 'letsencrypt' module is being renamed 'acme_certificate'", version='2.10')
|
|
set_crypto_backend(module)
|
|
|
|
# AnsibleModule() changes the locale, so change it back to C because we rely on time.strptime() when parsing certificate dates.
|
|
module.run_command_environ_update = dict(LANG='C', LC_ALL='C', LC_MESSAGES='C', LC_CTYPE='C')
|
|
locale.setlocale(locale.LC_ALL, 'C')
|
|
|
|
if not module.params.get('validate_certs'):
|
|
module.warn(warning='Disabling certificate validation for communications with ACME endpoint. ' +
|
|
'This should only be done for testing against a local ACME server for ' +
|
|
'development purposes, but *never* for production purposes.')
|
|
|
|
try:
|
|
if module.params.get('dest'):
|
|
cert_days = get_cert_days(module, module.params['dest'])
|
|
else:
|
|
cert_days = get_cert_days(module, module.params['fullchain_dest'])
|
|
|
|
if module.params['force'] or cert_days < module.params['remaining_days']:
|
|
# If checkmode is active, base the changed state solely on the status
|
|
# of the certificate file as all other actions (accessing an account, checking
|
|
# the authorization status...) would lead to potential changes of the current
|
|
# state
|
|
if module.check_mode:
|
|
module.exit_json(changed=True, authorizations={}, challenge_data={}, cert_days=cert_days)
|
|
else:
|
|
client = ACMEClient(module)
|
|
client.cert_days = cert_days
|
|
if client.is_first_step():
|
|
# First run: start challenges / start new order
|
|
client.start_challenges()
|
|
else:
|
|
# Second run: finish challenges, and get certificate
|
|
try:
|
|
client.finish_challenges()
|
|
client.get_certificate()
|
|
finally:
|
|
if module.params['deactivate_authzs']:
|
|
client.deactivate_authzs()
|
|
data, data_dns = client.get_challenges_data()
|
|
module.exit_json(
|
|
changed=client.changed,
|
|
authorizations=client.authorizations,
|
|
finalize_uri=client.finalize_uri,
|
|
order_uri=client.order_uri,
|
|
account_uri=client.account.uri,
|
|
challenge_data=data,
|
|
challenge_data_dns=data_dns,
|
|
cert_days=client.cert_days
|
|
)
|
|
else:
|
|
module.exit_json(changed=False, cert_days=cert_days)
|
|
except ModuleFailException as e:
|
|
e.do_fail(module)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|