Regenerate certificate on CA's subject change. (#402)

changelogs/fragments/402-x509_certificate-ownca-subject.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - "x509_certificate - regenerate certificate when the CA's subject changes for ``provider=ownca`` (https://github.com/ansible-collections/community.crypto/issues/400, https://github.com/ansible-collections/community.crypto/pull/402)."

plugins/module_utils/crypto/module_backends/certificate_ownca.py

@@ -173,6 +173,12 @@ class OwnCACertificateBackendCryptography(CertificateBackend):
         if super(OwnCACertificateBackendCryptography, self).needs_regeneration(not_before=self.notBefore, not_after=self.notAfter):
             return True
 
+        self._ensure_existing_certificate_loaded()
+
+        # Check subject
+        if self.ca_cert.subject != self.existing_certificate.issuer:
+            return True
+
         # Check AuthorityKeyIdentifier
         if self.create_authority_key_identifier:
             try:
@@ -185,7 +191,6 @@ class OwnCACertificateBackendCryptography(CertificateBackend):
             except cryptography.x509.ExtensionNotFound:
                 expected_ext = x509.AuthorityKeyIdentifier.from_issuer_public_key(self.ca_cert.public_key())
 
-            self._ensure_existing_certificate_loaded()
             try:
                 ext = self.existing_certificate.extensions.get_extension_for_class(x509.AuthorityKeyIdentifier)
                 if ext.value != expected_ext:

tests/integration/targets/x509_certificate/tasks/ownca.yml

@@ -14,14 +14,20 @@
 
 - name: (OwnCA, {{select_crypto_backend}}) Generate CA CSR
   openssl_csr:
-    path: '{{ remote_tmp_dir }}/ca_csr.csr'
+    path: '{{ item.path }}'
     privatekey_path: '{{ remote_tmp_dir }}/ca_privatekey.pem'
-    subject:
-      commonName: Example CA
+    subject: '{{ item.subject }}'
     useCommonNameForSAN: no
     basic_constraints:
     - 'CA:TRUE'
     basic_constraints_critical: yes
+  loop:
+    - path: '{{ remote_tmp_dir }}/ca_csr.csr'
+      subject:
+        commonName: Example CA
+    - path: '{{ remote_tmp_dir }}/ca_csr2.csr'
+      subject:
+        commonName: Example CA 2
 
 - name: (OwnCA, {{select_crypto_backend}}) Generate CA CSR (privatekey passphrase)
   openssl_csr:
@@ -62,6 +68,15 @@
       - result_check_mode is changed
       - result is changed
 
+- name: (OwnCA, {{select_crypto_backend}}) Generate selfsigned CA certificate with different commonName
+  x509_certificate:
+    path: '{{ remote_tmp_dir }}/ca_cert2.pem'
+    csr_path: '{{ remote_tmp_dir }}/ca_csr2.csr'
+    privatekey_path: '{{ remote_tmp_dir }}/ca_privatekey.pem'
+    provider: selfsigned
+    selfsigned_digest: sha256
+    select_crypto_backend: '{{ select_crypto_backend }}'
+
 - name: (OwnCA, {{select_crypto_backend}}) Generate selfsigned CA certificate (privatekey passphrase)
   x509_certificate:
     path: '{{ remote_tmp_dir }}/ca_cert_pw.pem'
@@ -110,6 +125,42 @@
     select_crypto_backend: '{{ select_crypto_backend }}'
   check_mode: yes
 
+- name: (OwnCA, {{select_crypto_backend}}) Copy ownca certificate to new file to check regeneration
+  copy:
+    src: '{{ remote_tmp_dir }}/ownca_cert.pem'
+    dest: '{{ item }}'
+    remote_src: true
+  loop:
+    - '{{ remote_tmp_dir }}/ownca_cert_ca_cn.pem'
+    - '{{ remote_tmp_dir }}/ownca_cert_ca_key.pem'
+
+- name: (OwnCA, {{select_crypto_backend}}) Regenerate ownca certificate with different CA subject
+  x509_certificate:
+    path: '{{ remote_tmp_dir }}/ownca_cert_ca_cn.pem'
+    csr_path: '{{ remote_tmp_dir }}/csr.csr'
+    privatekey_path: '{{ remote_tmp_dir }}/privatekey.pem'
+    ownca_path: '{{ remote_tmp_dir }}/ca_cert2.pem'
+    ownca_privatekey_path: '{{ remote_tmp_dir }}/ca_privatekey.pem'
+    provider: ownca
+    ownca_digest: sha256
+    select_crypto_backend: '{{ select_crypto_backend }}'
+    return_content: yes
+  register: ownca_certificate_ca_subject_changed
+
+- name: (OwnCA, {{select_crypto_backend}}) Regenerate ownca certificate with different CA key
+  x509_certificate:
+    path: '{{ remote_tmp_dir }}/ownca_cert_ca_key.pem'
+    csr_path: '{{ remote_tmp_dir }}/csr.csr'
+    privatekey_path: '{{ remote_tmp_dir }}/privatekey.pem'
+    ownca_path: '{{ remote_tmp_dir }}/ca_cert_pw.pem'
+    ownca_privatekey_path: '{{ remote_tmp_dir }}/ca_privatekey_pw.pem'
+    ownca_privatekey_passphrase: hunter2
+    provider: ownca
+    ownca_digest: sha256
+    select_crypto_backend: '{{ select_crypto_backend }}'
+    return_content: yes
+  register: ownca_certificate_ca_key_changed
+
 - name: (OwnCA, {{select_crypto_backend}}) Get certificate information
   community.crypto.x509_certificate_info:
     path: '{{ remote_tmp_dir }}/ownca_cert.pem'

tests/integration/targets/x509_certificate/tests/validate_ownca.yml

@@ -31,6 +31,12 @@
       - ownca_certificate.notBefore == ownca_certificate_idempotence.notBefore
       - ownca_certificate.notAfter == ownca_certificate_idempotence.notAfter
 
+- name: (OwnCA validation, {{select_crypto_backend}}) Validate ownca certificate regeneration
+  assert:
+    that:
+      - ownca_certificate_ca_subject_changed is changed
+      - ownca_certificate_ca_key_changed is changed
+
 - name: (OwnCA validation, {{select_crypto_backend}}) Read certificate
   slurp:
     src: '{{ remote_tmp_dir }}/ownca_cert.pem'