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| 1 | +# Copyright 2025 Genesis Corporation. |
| 2 | +# |
| 3 | +# All Rights Reserved. |
| 4 | +# |
| 5 | +# Licensed under the Apache License, Version 2.0 (the "License"); you may |
| 6 | +# not use this file except in compliance with the License. You may obtain |
| 7 | +# a copy of the License at |
| 8 | +# |
| 9 | +# http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | +# |
| 11 | +# Unless required by applicable law or agreed to in writing, software |
| 12 | +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 13 | +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 14 | +# License for the specific language governing permissions and limitations |
| 15 | +# under the License. |
| 16 | +from __future__ import annotations |
| 17 | + |
| 18 | +import logging |
| 19 | +import typing as tp |
| 20 | + |
| 21 | +from cryptography import x509 |
| 22 | +from restalchemy.dm import filters as dm_filters |
| 23 | +from restalchemy.storage import exceptions as ra_exc |
| 24 | +from gcl_sdk.agents.universal.dm import models |
| 25 | +from gcl_sdk.agents.universal.clients.backend import base |
| 26 | +from gcl_sdk.agents.universal.clients.backend import exceptions |
| 27 | + |
| 28 | +from gcl_certbot_plugin import acme |
| 29 | +from gcl_certbot_plugin import clients as dns_clients |
| 30 | +from gcl_certbot_plugin.acme import acme_lib_client |
| 31 | + |
| 32 | +from genesis_core.secret.dm import models as secret_dm |
| 33 | +from genesis_core.agent.universal.drivers.secret.dm import models as driver_dm |
| 34 | + |
| 35 | +LOG = logging.getLogger(__name__) |
| 36 | + |
| 37 | + |
| 38 | +class CertBotBackendClient(base.AbstractBackendClient): |
| 39 | + """Cert bot backend client.""" |
| 40 | + |
| 41 | + DEFAULT_PRIVATE_KEY_PATH = "/etc/genesis_core/certbot/privkey.pem" |
| 42 | + |
| 43 | + def __init__( |
| 44 | + self, |
| 45 | + dns_client: dns_clients.TinyDNSCoreClient, |
| 46 | + admin_email: str, |
| 47 | + private_key_path: str = DEFAULT_PRIVATE_KEY_PATH, |
| 48 | + ) -> None: |
| 49 | + self._dns_client = dns_client |
| 50 | + self._admin_email = admin_email |
| 51 | + self._client_acme: acme_lib_client.ClientV2 | None = None |
| 52 | + self._private_key = acme.get_or_create_client_private_key( |
| 53 | + private_key_path |
| 54 | + ) |
| 55 | + |
| 56 | + def _get_or_create_acme_client(self) -> acme_lib_client.ClientV2: |
| 57 | + if self._client_acme is None: |
| 58 | + self._client_acme = acme.get_acme_client( |
| 59 | + self._private_key, self._admin_email |
| 60 | + ) |
| 61 | + return self._client_acme |
| 62 | + |
| 63 | + def get(self, resource: models.Resource) -> dict[str, tp.Any]: |
| 64 | + """Get the resource value in dictionary format.""" |
| 65 | + try: |
| 66 | + cert = driver_dm.Certificate.objects.get_one( |
| 67 | + filters={ |
| 68 | + "uuid": dm_filters.EQ(resource.uuid), |
| 69 | + }, |
| 70 | + ) |
| 71 | + except ra_exc.RecordNotFound: |
| 72 | + raise exceptions.ResourceNotFound(resource=resource) |
| 73 | + |
| 74 | + return cert.to_resource_value() |
| 75 | + |
| 76 | + def create(self, resource: models.Resource) -> dict[str, tp.Any]: |
| 77 | + """Creates the resource. Returns the created resource.""" |
| 78 | + try: |
| 79 | + self.get(resource) |
| 80 | + except exceptions.ResourceNotFound: |
| 81 | + pass |
| 82 | + else: |
| 83 | + raise exceptions.ResourceAlreadyExists(resource=resource) |
| 84 | + |
| 85 | + cert = secret_dm.Certificate.from_ua_resource(resource) |
| 86 | + |
| 87 | + # Create cert via DNS |
| 88 | + pkey_pem, csr_pem, fullchain_pem = acme.create_cert( |
| 89 | + self._get_or_create_acme_client(), |
| 90 | + self._dns_client, |
| 91 | + cert.domains, |
| 92 | + ) |
| 93 | + cert_x509 = x509.load_pem_x509_certificate(fullchain_pem.encode()) |
| 94 | + expiration_at = cert_x509.not_valid_after_utc |
| 95 | + |
| 96 | + # Build storagable password and save |
| 97 | + driver_cert = driver_dm.Certificate.from_cert_resource( |
| 98 | + resource, pkey_pem, csr_pem, fullchain_pem, expiration_at |
| 99 | + ) |
| 100 | + |
| 101 | + driver_cert.save() |
| 102 | + return driver_cert.to_resource_value() |
| 103 | + |
| 104 | + def update(self, resource: models.Resource) -> dict[str, tp.Any]: |
| 105 | + """Update the resource. Returns the updated resource.""" |
| 106 | + try: |
| 107 | + cert = driver_dm.Certificate.objects.get_one( |
| 108 | + filters={ |
| 109 | + "uuid": dm_filters.EQ(resource.uuid), |
| 110 | + }, |
| 111 | + ) |
| 112 | + except ra_exc.RecordNotFound: |
| 113 | + raise exceptions.ResourceNotFound(resource=resource) |
| 114 | + |
| 115 | + # TODO(akremenetsky): It's tricky logic to update the cert |
| 116 | + # if domains changed. Need to check domains intersection, |
| 117 | + # check wildcards |
| 118 | + if set(cert["meta"]["domains"]) != set(resource.value["domains"]): |
| 119 | + LOG.error("Not implemented yet") |
| 120 | + raise NotImplementedError("Domains changed") |
| 121 | + # return cert.to_resource_value() |
| 122 | + |
| 123 | + # Should the cert be renewed? |
| 124 | + if not cert.is_under_threshold(cert): |
| 125 | + return cert.to_resource_value() |
| 126 | + |
| 127 | + pkey_pem, csr_pem, fullchain_pem = acme.renew_cert( |
| 128 | + self._get_or_create_acme_client(), |
| 129 | + self._dns_client, |
| 130 | + resource.value["domains"], |
| 131 | + cert.pkey.encode(), |
| 132 | + ) |
| 133 | + cert_x509 = x509.load_pem_x509_certificate(fullchain_pem.encode()) |
| 134 | + expiration_at = cert_x509.not_valid_after_utc |
| 135 | + |
| 136 | + driver_cert = driver_dm.Certificate.from_cert_resource( |
| 137 | + resource, pkey_pem, csr_pem, fullchain_pem, expiration_at |
| 138 | + ) |
| 139 | + |
| 140 | + cert.delete() |
| 141 | + driver_cert.save() |
| 142 | + return driver_cert.to_resource_value() |
| 143 | + |
| 144 | + def list(self, kind: str, **kwargs) -> list[dict[str, tp.Any]]: |
| 145 | + """Lists all resources by kind.""" |
| 146 | + certs = driver_dm.Certificate.objects.get_all() |
| 147 | + |
| 148 | + return [cert.to_resource_value() for cert in certs] |
| 149 | + |
| 150 | + def delete(self, resource: models.Resource) -> None: |
| 151 | + """Delete the resource.""" |
| 152 | + try: |
| 153 | + self.get(resource) |
| 154 | + except exceptions.ResourceNotFound: |
| 155 | + raise exceptions.ResourceNotFound(resource=resource) |
| 156 | + |
| 157 | + cert = driver_dm.Certificate.objects.get_one( |
| 158 | + filters={ |
| 159 | + "uuid": dm_filters.EQ(resource.uuid), |
| 160 | + } |
| 161 | + ) |
| 162 | + acme.revoke_cert(self._get_or_create_acme_client(), cert.fullchain) |
| 163 | + cert.delete() |
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