openssl_certificate: make sure extensions are present when they are queried by assertonly (#53207)

* Make sure extensions are present when they are queried by assertonly provider.

* Add changelog.

changelogs/fragments/53207-openssl_certificate-assertonly-extensions.yml

@@ -0,0 +1,2 @@
+bugfixes:
+- "openssl_certificate - make sure that extensions are actually present when their values should be checked."

lib/ansible/modules/crypto/openssl_certificate.py

@@ -886,9 +886,11 @@ class AssertOnlyCertificate(Certificate):
 
         def _validate_keyUsage():
             if self.keyUsage:
+                found = False
                 for extension_idx in range(0, self.cert.get_extension_count()):
                     extension = self.cert.get_extension(extension_idx)
                     if extension.get_short_name() == b'keyUsage':
+                        found = True
                         keyUsage = [OpenSSL._util.lib.OBJ_txt2nid(keyUsage) for keyUsage in self.keyUsage]
                         current_ku = [OpenSSL._util.lib.OBJ_txt2nid(usage.strip()) for usage in
                                       to_bytes(extension, errors='surrogate_or_strict').split(b',')]
@@ -897,12 +899,16 @@ class AssertOnlyCertificate(Certificate):
                             self.message.append(
                                 'Invalid keyUsage component (got %s, expected all of %s to be present)' % (str(extension).split(', '), self.keyUsage)
                             )
+                if not found:
+                    self.message.append('Found no keyUsage extension')
 
         def _validate_extendedKeyUsage():
             if self.extendedKeyUsage:
+                found = False
                 for extension_idx in range(0, self.cert.get_extension_count()):
                     extension = self.cert.get_extension(extension_idx)
                     if extension.get_short_name() == b'extendedKeyUsage':
+                        found = True
                         extKeyUsage = [OpenSSL._util.lib.OBJ_txt2nid(keyUsage) for keyUsage in self.extendedKeyUsage]
                         current_xku = [OpenSSL._util.lib.OBJ_txt2nid(usage.strip()) for usage in
                                        to_bytes(extension, errors='surrogate_or_strict').split(b',')]
@@ -912,12 +918,16 @@ class AssertOnlyCertificate(Certificate):
                                 'Invalid extendedKeyUsage component (got %s, expected all of %s to be present)' % (str(extension).split(', '),
                                                                                                                    self.extendedKeyUsage)
                             )
+                if not found:
+                    self.message.append('Found no extendedKeyUsage extension')
 
         def _validate_subjectAltName():
             if self.subjectAltName:
+                found = False
                 for extension_idx in range(0, self.cert.get_extension_count()):
                     extension = self.cert.get_extension(extension_idx)
                     if extension.get_short_name() == b'subjectAltName':
+                        found = True
                         l_altnames = [altname.replace(b'IP Address', b'IP') for altname in
                                       to_bytes(extension, errors='surrogate_or_strict').split(b', ')]
                         if (not self.subjectAltName_strict and not all(x in l_altnames for x in self.subjectAltName)) or \
@@ -925,6 +935,8 @@ class AssertOnlyCertificate(Certificate):
                             self.message.append(
                                 'Invalid subjectAltName component (got %s, expected all of %s to be present)' % (l_altnames, self.subjectAltName)
                             )
+                if not found:
+                    self.message.append('Found no subjectAltName extension')
 
         def _validate_notBefore():
             if self.notBefore:

test/integration/targets/openssl_certificate/tasks/assertonly.yml

@@ -0,0 +1,56 @@
+---
+- name: Generate privatekey
+  openssl_privatekey:
+    path: '{{ output_dir }}/privatekey.pem'
+
+- name: Generate CSR (no extensions)
+  openssl_csr:
+    path: '{{ output_dir }}/csr_noext.csr'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    subject:
+      commonName: www.example.com
+    useCommonNameForSAN: no
+
+- name: Generate selfsigned certificate (no extensions)
+  openssl_certificate:
+    path: '{{ output_dir }}/cert_noext.pem'
+    csr_path: '{{ output_dir }}/csr_noext.csr'
+    privatekey_path: '{{ output_dir }}/privatekey.pem'
+    provider: selfsigned
+    selfsigned_digest: sha256
+
+- name: Assert that subject_alt_name is there (should fail)
+  openssl_certificate:
+    path: '{{ output_dir }}/cert_noext.pem'
+    provider: assertonly
+    subject_alt_name:
+      - "DNS:example.com"
+  ignore_errors: yes
+  register: extension_missing_san
+
+- name: Assert that key_usage is there (should fail)
+  openssl_certificate:
+    path: '{{ output_dir }}/cert_noext.pem'
+    provider: assertonly
+    key_usage:
+      - digitalSignature
+  ignore_errors: yes
+  register: extension_missing_ku
+
+- name: Assert that extended_key_usage is there (should fail)
+  openssl_certificate:
+    path: '{{ output_dir }}/cert_noext.pem'
+    provider: assertonly
+    extended_key_usage:
+      - biometricInfo
+  ignore_errors: yes
+  register: extension_missing_eku
+
+- assert:
+    that:
+      - extension_missing_san is failed
+      - "'Found no subjectAltName extension' in extension_missing_san.msg"
+      - extension_missing_ku is failed
+      - "'Found no keyUsage extension' in extension_missing_ku.msg"
+      - extension_missing_eku is failed
+      - "'Found no extendedKeyUsage extension' in extension_missing_eku.msg"

test/integration/targets/openssl_certificate/tasks/main.yml

@@ -1,6 +1,8 @@
 ---
 - block:
 
+    - import_tasks: assertonly.yml
+
     - import_tasks: expired.yml
 
     - import_tasks: selfsigned.yml