From 5efaebbbf233e4007a2d4e66566c0e1c8006d1d3 Mon Sep 17 00:00:00 2001 From: Github Actions Date: Wed, 15 Nov 2023 00:15:10 +0000 Subject: [PATCH] chore: update charm libraries --- .../v0/certificate_transfer.py | 4 +- .../v0/cloud_config_requirer.py | 64 +++++--- lib/charms/loki_k8s/v0/loki_push_api.py | 14 +- .../observability_libs/v0/cert_handler.py | 38 +++-- .../v2/tls_certificates.py | 150 ++++++++++++++---- 5 files changed, 195 insertions(+), 75 deletions(-) diff --git a/lib/charms/certificate_transfer_interface/v0/certificate_transfer.py b/lib/charms/certificate_transfer_interface/v0/certificate_transfer.py index edad1d90..44ddfdae 100644 --- a/lib/charms/certificate_transfer_interface/v0/certificate_transfer.py +++ b/lib/charms/certificate_transfer_interface/v0/certificate_transfer.py @@ -97,7 +97,7 @@ def _on_certificate_removed(self, event: CertificateRemovedEvent): import logging from typing import List -from jsonschema import exceptions, validate # type: ignore[import] +from jsonschema import exceptions, validate # type: ignore[import-untyped] from ops.charm import CharmBase, CharmEvents, RelationBrokenEvent, RelationChangedEvent from ops.framework import EventBase, EventSource, Handle, Object @@ -109,7 +109,7 @@ def _on_certificate_removed(self, event: CertificateRemovedEvent): # Increment this PATCH version before using `charmcraft publish-lib` or reset # to 0 if you are raising the major API version -LIBPATCH = 4 +LIBPATCH = 5 PYDEPS = ["jsonschema"] diff --git a/lib/charms/grafana_cloud_integrator/v0/cloud_config_requirer.py b/lib/charms/grafana_cloud_integrator/v0/cloud_config_requirer.py index d28d2eb3..6e01c26d 100644 --- a/lib/charms/grafana_cloud_integrator/v0/cloud_config_requirer.py +++ b/lib/charms/grafana_cloud_integrator/v0/cloud_config_requirer.py @@ -6,7 +6,7 @@ LIBID = "e6f580481c1b4388aa4d2cdf412a47fa" LIBAPI = 0 -LIBPATCH = 3 +LIBPATCH = 4 DEFAULT_RELATION_NAME = "grafana-cloud-config" @@ -45,7 +45,7 @@ def __init__(self, charm, relation_name = DEFAULT_RELATION_NAME): super().__init__(charm, relation_name) self._charm = charm self._relation_name = relation_name - + for event in self._change_events: self.framework.observe(event, self._on_relation_changed) @@ -56,14 +56,6 @@ def _on_relation_changed(self, event): if not self._charm.unit.is_leader(): return - if not all( - self._is_not_empty(x) - for x in [ - event.relation.data[event.app].get("username", ""), - event.relation.data[event.app].get("password", ""), - ]): - return - self.on.cloud_config_available.emit() # pyright: ignore def _on_relation_broken(self, event): @@ -96,29 +88,55 @@ def _events(self): @property def credentials(self): - return Credentials( - self._data.get("username", ""), - self._data.get("password", "") - ) + """Return the credentials, if any; otherwise, return None.""" + if not all( + self._is_not_empty(x) + for x in [ + self._data.get("username", ""), + self._data.get("password", ""), + ]): + return Credentials( + self._data.get("username", ""), + self._data.get("password", "") + ) + return None @property def loki_ready(self): - return ( - self._is_not_empty(self.credentials.username) - and self._is_not_empty(self.credentials.password) - and self._is_not_empty(self.loki_url)) + return self._is_not_empty(self.loki_url) + + @property + def loki_endpoint(self) -> dict: + """Return the loki endpoint dict.""" + if not self.loki_ready: + return {} + + endpoint = {} + endpoint["url"] = self.loki_url + if self.credentials: + endpoint["basic_auth"] = {"username": self.credentials.username, "password": self.credentials.password} + return endpoint @property def prometheus_ready(self): - return ( - self._is_not_empty(self.credentials.username) - and self._is_not_empty(self.credentials.password) - and self._is_not_empty(self.prometheus_url)) + return self._is_not_empty(self.prometheus_url) + + @property + def prometheus_endpoint(self) -> dict: + """Return the prometheus endpoint dict.""" + if not self.prometheus_ready: + return {} + + endpoint = {} + endpoint["url"] = self.prometheus_url + if self.credentials: + endpoint["basic_auth"] = {"username": self.credentials.username, "password": self.credentials.password} + return endpoint @property def loki_url(self): return self._data.get("loki_url", "") - + @property def prometheus_url(self): return self._data.get("prometheus_url", "") diff --git a/lib/charms/loki_k8s/v0/loki_push_api.py b/lib/charms/loki_k8s/v0/loki_push_api.py index 1547a3b0..9f9372d2 100644 --- a/lib/charms/loki_k8s/v0/loki_push_api.py +++ b/lib/charms/loki_k8s/v0/loki_push_api.py @@ -480,7 +480,7 @@ def _alert_rules_error(self, event): # Increment this PATCH version before using `charmcraft publish-lib` or reset # to 0 if you are raising the major API version -LIBPATCH = 21 +LIBPATCH = 22 logger = logging.getLogger(__name__) @@ -1773,6 +1773,8 @@ def __init__( recursive: bool = False, container_name: str = "", promtail_resource_name: Optional[str] = None, + *, # TODO: In v1, move the star up so everything after 'charm' is a kwarg + insecure_skip_verify: bool = False, ): super().__init__(charm, relation_name, alert_rules_path, recursive) self._charm = charm @@ -1792,6 +1794,7 @@ def __init__( self._is_syslog = enable_syslog self.topology = JujuTopology.from_charm(charm) self._promtail_resource_name = promtail_resource_name or "promtail-bin" + self.insecure_skip_verify = insecure_skip_verify # architecture used for promtail binary arch = platform.processor() @@ -2153,8 +2156,15 @@ def _current_config(self) -> dict: @property def _promtail_config(self) -> dict: - """Generates the config file for Promtail.""" + """Generates the config file for Promtail. + + Reference: https://grafana.com/docs/loki/latest/send-data/promtail/configuration + """ config = {"clients": self._clients_list()} + if self.insecure_skip_verify: + for client in config["clients"]: + client["tls_config"] = {"insecure_skip_verify": True} + config.update(self._server_config()) config.update(self._positions()) config.update(self._scrape_configs()) diff --git a/lib/charms/observability_libs/v0/cert_handler.py b/lib/charms/observability_libs/v0/cert_handler.py index 88a8374e..db14e00f 100644 --- a/lib/charms/observability_libs/v0/cert_handler.py +++ b/lib/charms/observability_libs/v0/cert_handler.py @@ -64,7 +64,7 @@ LIBID = "b5cd5cd580f3428fa5f59a8876dcbe6a" LIBAPI = 0 -LIBPATCH = 8 +LIBPATCH = 9 def is_ip_address(value: str) -> bool: @@ -181,33 +181,40 @@ def _peer_relation(self) -> Optional[Relation]: return self.charm.model.get_relation(self.peer_relation_name, None) def _on_peer_relation_created(self, _): - """Generate the private key and store it in a peer relation.""" - # We're in "relation-created", so the relation should be there + """Generate the CSR if the certificates relation is ready.""" + self._generate_privkey() - # Just in case we already have a private key, do not overwrite it. - # Not sure how this could happen. - # TODO figure out how to go about key rotation. - if not self._private_key: - private_key = generate_private_key() - self._private_key = private_key.decode() - - # Generate CSR here, in case peer events fired after tls-certificate relation events + # check cert relation is ready if not (self.charm.model.get_relation(self.certificates_relation_name)): # peer relation event happened to fire before tls-certificates events. # Abort, and let the "certificates joined" observer create the CSR. + logger.info("certhandler waiting on certificates relation") return + logger.debug("certhandler has peer and certs relation: proceeding to generate csr") self._generate_csr() def _on_certificates_relation_joined(self, _) -> None: - """Generate the CSR and request the certificate creation.""" + """Generate the CSR if the peer relation is ready.""" + self._generate_privkey() + + # check peer relation is there if not self._peer_relation: # tls-certificates relation event happened to fire before peer events. # Abort, and let the "peer joined" relation create the CSR. + logger.info("certhandler waiting on peer relation") return + logger.debug("certhandler has peer and certs relation: proceeding to generate csr") self._generate_csr() + def _generate_privkey(self): + # Generate priv key unless done already + # TODO figure out how to go about key rotation. + if not self._private_key: + private_key = generate_private_key() + self._private_key = private_key.decode() + def _on_config_changed(self, _): # FIXME on config changed, the web_external_url may or may not change. But because every # call to `generate_csr` appends a uuid, CSRs cannot be easily compared to one another. @@ -237,7 +244,12 @@ def _generate_csr( # In case we already have a csr, do not overwrite it by default. if overwrite or renew or not self._csr: private_key = self._private_key - assert private_key is not None # for type checker + if private_key is None: + # FIXME: raise this in a less nested scope by + # generating privkey and csr in the same method. + raise RuntimeError( + "private key unset. call _generate_privkey() before you call this method." + ) csr = generate_csr( private_key=private_key.encode(), subject=self.cert_subject, diff --git a/lib/charms/tls_certificates_interface/v2/tls_certificates.py b/lib/charms/tls_certificates_interface/v2/tls_certificates.py index f4a08366..99741f51 100644 --- a/lib/charms/tls_certificates_interface/v2/tls_certificates.py +++ b/lib/charms/tls_certificates_interface/v2/tls_certificates.py @@ -287,7 +287,7 @@ def _on_all_certificates_invalidated(self, event: AllCertificatesInvalidatedEven from cryptography.hazmat.primitives.asymmetric import rsa from cryptography.hazmat.primitives.serialization import pkcs12 from cryptography.x509.extensions import Extension, ExtensionNotFound -from jsonschema import exceptions, validate # type: ignore[import] +from jsonschema import exceptions, validate # type: ignore[import-untyped] from ops.charm import ( CharmBase, CharmEvents, @@ -298,7 +298,7 @@ def _on_all_certificates_invalidated(self, event: AllCertificatesInvalidatedEven ) from ops.framework import EventBase, EventSource, Handle, Object from ops.jujuversion import JujuVersion -from ops.model import Relation, SecretNotFoundError +from ops.model import ModelError, Relation, RelationDataContent, SecretNotFoundError # The unique Charmhub library identifier, never change it LIBID = "afd8c2bccf834997afce12c2706d2ede" @@ -308,7 +308,7 @@ def _on_all_certificates_invalidated(self, event: AllCertificatesInvalidatedEven # Increment this PATCH version before using `charmcraft publish-lib` or reset # to 0 if you are raising the major API version -LIBPATCH = 16 +LIBPATCH = 20 PYDEPS = ["cryptography", "jsonschema"] @@ -335,7 +335,10 @@ def _on_all_certificates_invalidated(self, event: AllCertificatesInvalidatedEven "type": "array", "items": { "type": "object", - "properties": {"certificate_signing_request": {"type": "string"}}, + "properties": { + "certificate_signing_request": {"type": "string"}, + "ca": {"type": "boolean"}, + }, "required": ["certificate_signing_request"], }, } @@ -536,22 +539,31 @@ def restore(self, snapshot: dict): class CertificateCreationRequestEvent(EventBase): """Charm Event triggered when a TLS certificate is required.""" - def __init__(self, handle: Handle, certificate_signing_request: str, relation_id: int): + def __init__( + self, + handle: Handle, + certificate_signing_request: str, + relation_id: int, + is_ca: bool = False, + ): super().__init__(handle) self.certificate_signing_request = certificate_signing_request self.relation_id = relation_id + self.is_ca = is_ca def snapshot(self) -> dict: """Returns snapshot.""" return { "certificate_signing_request": self.certificate_signing_request, "relation_id": self.relation_id, + "is_ca": self.is_ca, } def restore(self, snapshot: dict): """Restores snapshot.""" self.certificate_signing_request = snapshot["certificate_signing_request"] self.relation_id = snapshot["relation_id"] + self.is_ca = snapshot["is_ca"] class CertificateRevocationRequestEvent(EventBase): @@ -588,23 +600,26 @@ def restore(self, snapshot: dict): self.chain = snapshot["chain"] -def _load_relation_data(raw_relation_data: dict) -> dict: +def _load_relation_data(relation_data_content: RelationDataContent) -> dict: """Loads relation data from the relation data bag. Json loads all data. Args: - raw_relation_data: Relation data from the databag + relation_data_content: Relation data from the databag Returns: dict: Relation data in dict format. """ certificate_data = dict() - for key in raw_relation_data: - try: - certificate_data[key] = json.loads(raw_relation_data[key]) - except (json.decoder.JSONDecodeError, TypeError): - certificate_data[key] = raw_relation_data[key] + try: + for key in relation_data_content: + try: + certificate_data[key] = json.loads(relation_data_content[key]) + except (json.decoder.JSONDecodeError, TypeError): + certificate_data[key] = relation_data_content[key] + except ModelError: + pass return certificate_data @@ -685,6 +700,7 @@ def generate_certificate( ca_key_password: Optional[bytes] = None, validity: int = 365, alt_names: Optional[List[str]] = None, + is_ca: bool = False, ) -> bytes: """Generates a TLS certificate based on a CSR. @@ -695,6 +711,7 @@ def generate_certificate( ca_key_password: CA private key password validity (int): Certificate validity (in days) alt_names (list): List of alt names to put on cert - prefer putting SANs in CSR + is_ca (bool): Whether the certificate is a CA certificate Returns: bytes: Certificate @@ -726,7 +743,6 @@ def generate_certificate( .add_extension( x509.SubjectKeyIdentifier.from_public_key(csr_object.public_key()), critical=False ) - .add_extension(x509.BasicConstraints(ca=False, path_length=None), critical=False) ) extensions_list = csr_object.extensions @@ -758,6 +774,29 @@ def generate_certificate( critical=extension.critical, ) + if is_ca: + certificate_builder = certificate_builder.add_extension( + x509.BasicConstraints(ca=True, path_length=None), critical=True + ) + certificate_builder = certificate_builder.add_extension( + x509.KeyUsage( + digital_signature=False, + content_commitment=False, + key_encipherment=False, + data_encipherment=False, + key_agreement=False, + key_cert_sign=True, + crl_sign=True, + encipher_only=False, + decipher_only=False, + ), + critical=True, + ) + else: + certificate_builder = certificate_builder.add_extension( + x509.BasicConstraints(ca=False, path_length=None), critical=False + ) + certificate_builder._version = x509.Version.v3 cert = certificate_builder.sign(private_key, hashes.SHA256()) # type: ignore[arg-type] return cert.public_bytes(serialization.Encoding.PEM) @@ -1171,15 +1210,19 @@ def _on_relation_changed(self, event: RelationChangedEvent) -> None: certificate_creation_request["certificate_signing_request"] for certificate_creation_request in provider_certificates ] - requirer_unit_csrs = [ - certificate_creation_request["certificate_signing_request"] + requirer_unit_certificate_requests = [ + { + "csr": certificate_creation_request["certificate_signing_request"], + "is_ca": certificate_creation_request.get("ca", False), + } for certificate_creation_request in requirer_csrs ] - for certificate_signing_request in requirer_unit_csrs: - if certificate_signing_request not in provider_csrs: + for certificate_request in requirer_unit_certificate_requests: + if certificate_request["csr"] not in provider_csrs: self.on.certificate_creation_request.emit( - certificate_signing_request=certificate_signing_request, + certificate_signing_request=certificate_request["csr"], relation_id=event.relation.id, + is_ca=certificate_request["is_ca"], ) self._revoke_certificates_for_which_no_csr_exists(relation_id=event.relation.id) @@ -1217,12 +1260,24 @@ def _revoke_certificates_for_which_no_csr_exists(self, relation_id: int) -> None ) self.remove_certificate(certificate=certificate["certificate"]) - def get_requirer_csrs_with_no_certs( + def get_outstanding_certificate_requests( self, relation_id: Optional[int] = None ) -> List[Dict[str, Union[int, str, List[Dict[str, str]]]]]: - """Filters the requirer's units csrs. + """Returns CSR's for which no certificate has been issued. - Keeps the ones for which no certificate was provided. + Example return: [ + { + "relation_id": 0, + "application_name": "tls-certificates-requirer", + "unit_name": "tls-certificates-requirer/0", + "unit_csrs": [ + { + "certificate_signing_request": "-----BEGIN CERTIFICATE REQUEST-----...", + "is_ca": false + } + ] + } + ] Args: relation_id (int): Relation id @@ -1239,6 +1294,7 @@ def get_requirer_csrs_with_no_certs( if not self.certificate_issued_for_csr( app_name=unit_csr_mapping["application_name"], # type: ignore[arg-type] csr=csr["certificate_signing_request"], # type: ignore[index] + relation_id=relation_id, ): csrs_without_certs.append(csr) if csrs_without_certs: @@ -1285,17 +1341,21 @@ def get_requirer_csrs( ) return unit_csr_mappings - def certificate_issued_for_csr(self, app_name: str, csr: str) -> bool: + def certificate_issued_for_csr( + self, app_name: str, csr: str, relation_id: Optional[int] + ) -> bool: """Checks whether a certificate has been issued for a given CSR. Args: app_name (str): Application name that the CSR belongs to. csr (str): Certificate Signing Request. - + relation_id (Optional[int]): Relation ID Returns: bool: True/False depending on whether a certificate has been issued for the given CSR. """ - issued_certificates_per_csr = self.get_issued_certificates()[app_name] + issued_certificates_per_csr = self.get_issued_certificates(relation_id=relation_id)[ + app_name + ] for issued_pair in issued_certificates_per_csr: if "csr" in issued_pair and issued_pair["csr"] == csr: return csr_matches_certificate(csr, issued_pair["certificate"]) @@ -1337,8 +1397,17 @@ def __init__( self.framework.observe(charm.on.update_status, self._on_update_status) @property - def _requirer_csrs(self) -> List[Dict[str, str]]: - """Returns list of requirer's CSRs from relation data.""" + def _requirer_csrs(self) -> List[Dict[str, Union[bool, str]]]: + """Returns list of requirer's CSRs from relation data. + + Example: + [ + { + "certificate_signing_request": "-----BEGIN CERTIFICATE REQUEST-----...", + "ca": false + } + ] + """ relation = self.model.get_relation(self.relationship_name) if not relation: raise RuntimeError(f"Relation {self.relationship_name} does not exist") @@ -1361,11 +1430,12 @@ def _provider_certificates(self) -> List[Dict[str, str]]: return [] return provider_relation_data.get("certificates", []) - def _add_requirer_csr(self, csr: str) -> None: + def _add_requirer_csr(self, csr: str, is_ca: bool) -> None: """Adds CSR to relation data. Args: csr (str): Certificate Signing Request + is_ca (bool): Whether the certificate is a CA certificate Returns: None @@ -1376,7 +1446,10 @@ def _add_requirer_csr(self, csr: str) -> None: f"Relation {self.relationship_name} does not exist - " f"The certificate request can't be completed" ) - new_csr_dict = {"certificate_signing_request": csr} + new_csr_dict: Dict[str, Union[bool, str]] = { + "certificate_signing_request": csr, + "ca": is_ca, + } if new_csr_dict in self._requirer_csrs: logger.info("CSR already in relation data - Doing nothing") return @@ -1400,18 +1473,22 @@ def _remove_requirer_csr(self, csr: str) -> None: f"The certificate request can't be completed" ) requirer_csrs = copy.deepcopy(self._requirer_csrs) - csr_dict = {"certificate_signing_request": csr} - if csr_dict not in requirer_csrs: - logger.info("CSR not in relation data - Doing nothing") + if not requirer_csrs: + logger.info("No CSRs in relation data - Doing nothing") return - requirer_csrs.remove(csr_dict) + for requirer_csr in requirer_csrs: + if requirer_csr["certificate_signing_request"] == csr: + requirer_csrs.remove(requirer_csr) relation.data[self.model.unit]["certificate_signing_requests"] = json.dumps(requirer_csrs) - def request_certificate_creation(self, certificate_signing_request: bytes) -> None: + def request_certificate_creation( + self, certificate_signing_request: bytes, is_ca: bool = False + ) -> None: """Request TLS certificate to provider charm. Args: certificate_signing_request (bytes): Certificate Signing Request + is_ca (bool): Whether the certificate is a CA certificate Returns: None @@ -1422,7 +1499,7 @@ def request_certificate_creation(self, certificate_signing_request: bytes) -> No f"Relation {self.relationship_name} does not exist - " f"The certificate request can't be completed" ) - self._add_requirer_csr(certificate_signing_request.decode().strip()) + self._add_requirer_csr(certificate_signing_request.decode().strip(), is_ca=is_ca) logger.info("Certificate request sent to provider") def request_certificate_revocation(self, certificate_signing_request: bytes) -> None: @@ -1701,7 +1778,10 @@ def csr_matches_certificate(csr: str, cert: str) -> bool: format=serialization.PublicFormat.SubjectPublicKeyInfo, ): return False - if csr_object.subject != cert_object.subject: + if ( + csr_object.public_key().public_numbers().n # type: ignore[union-attr] + != cert_object.public_key().public_numbers().n # type: ignore[union-attr] + ): return False except ValueError: logger.warning("Could not load certificate or CSR.")