Refactor simple-ca: Remove JSON config and streamline AIA URL handling

- Removed the JSON configuration structure and related functions.
- Introduced plain text file for AIA base URL management.
- Updated CA and certificate creation functions to directly read/write AIA URL.
- Simplified CA bundle rebuilding logic by directly reading subdirectories.
- Enhanced test coverage for CA and certificate creation, including PFX generation.
- Adjusted test cases to reflect changes in directory structure and file handling.

simple-ca.py

@@ -253,18 +253,12 @@ def make_ca(ca_dir, ca_name, days=3650, issuing_ca=None, ca_publish_base_url=Non
     return True
 
 
-def make_cert(cert_dir, cert_subject_name, sans=None, ca_dir=None,
+def make_cert(cert_subject_name, sans=None, ca_dir=None, cert_dir=None,
               issuing_ca=None, days=365, ca_publish_base_url=None):
     if issuing_ca == "ca":
         _err("--issuing-ca cannot be 'ca' as it is reserved for the root CA.")
         return False
 
-    ca_dir = ca_dir or cert_dir
-
-    if not cert_dir or not os.path.isdir(cert_dir):
-        _err(f"Certificate directory {cert_dir} does not exist.")
-        return False
-
     if not ca_dir or not os.path.isdir(ca_dir):
         _err(f"CA directory {ca_dir} does not exist.")
         return False
@@ -278,6 +272,11 @@ def make_cert(cert_dir, cert_subject_name, sans=None, ca_dir=None,
         return False
 
     signing_dir  = os.path.join(ca_dir, issuing_ca) if issuing_ca else ca_dir
+    cert_dir     = cert_dir or signing_dir
+
+    if not os.path.isdir(cert_dir):
+        _err(f"Certificate directory {cert_dir} does not exist.")
+        return False
     ca_cert_path = os.path.join(signing_dir, "ca_cert.pem")
     ca_key_path  = os.path.join(signing_dir, "ca_key.pem")
     if not os.path.isfile(ca_cert_path) or not os.path.isfile(ca_key_path):
@@ -581,9 +580,10 @@ def main(argv=None):
     elif args.command == "make-cert":
         days = args.days or days_cfg.get("cert", 365)
         ok = make_cert(
-            args.cert_dir, args.subject_name,
+            args.subject_name,
             sans=args.sans,
             ca_dir=ca_dir,
+            cert_dir=getattr(args, "cert_dir", None),
             issuing_ca=issuing_ca,
             days=days,
             ca_publish_base_url=ca_publish_base_url,