openssl_pkcs12: allow to specify certificate bundles in other_certificates (#166)

* Rename identify.py to pem.py.

* Move split PEM list code to pem.py crypto module_utils.

* Extend and use global certificate splitting code in acme_certificate.

* openssl_pkcs12: allow to load multiple certificates from files mentioned in other_certificates.

* Add changelog and module_utils redirect.

* Remove old check.

* Fix typo.

* Apply suggestions from code review

Co-authored-by: Andrew Klychkov <aaklychkov@mail.ru>

* Add example.

Co-authored-by: Andrew Klychkov <aaklychkov@mail.ru>

plugins/module_utils/crypto/__init__.py

@@ -55,7 +55,7 @@ from .cryptography_support import (
     cryptography_compare_public_keys,
 )
 
-from .identify import (
+from .pem import (
     identify_private_key_format,
 )
 

plugins/module_utils/crypto/module_backends/privatekey.py

@@ -33,7 +33,7 @@ from ansible_collections.community.crypto.plugins.module_utils.crypto.support im
     get_fingerprint_of_privatekey,
 )
 
-from ansible_collections.community.crypto.plugins.module_utils.crypto.identify import (
+from ansible_collections.community.crypto.plugins.module_utils.crypto.pem import (
     identify_private_key_format,
 )
 

plugins/module_utils/crypto/pem.py

@@ -54,3 +54,21 @@ def identify_private_key_format(content):
     except UnicodeDecodeError:
         pass
     return 'raw'
+
+
+def split_pem_list(text, keep_inbetween=False):
+    '''
+    Split concatenated PEM objects into a list of strings, where each is one PEM object.
+    '''
+    result = []
+    current = [] if keep_inbetween else None
+    for line in text.splitlines(True):
+        if line.strip():
+            if not keep_inbetween and line.startswith('-----BEGIN '):
+                current = []
+            if current is not None:
+                current.append(line)
+                if line.startswith('-----END '):
+                    result.append(''.join(current))
+                    current = [] if keep_inbetween else None
+    return result