Correctly handle RRSIG records, converting numeric type codes into their textual equivalents

src/helpers.py

@@ -1,6 +1,5 @@
 import logging
 import subprocess
-import dns.zone
 
 from pathlib import Path
 from datetime import datetime, UTC
@@ -141,27 +140,3 @@ def export_all_zones(trigger_path: str = "filesystem-change") -> list[Path]:
         logging.info("No zone files were written; skipping commit.")
 
     return written_files
-
-
-def validate_zone(zone_name, content) -> bool:
-    def replace_type_codes(content):
-        pattern = re.compile(r'(RRSIG\s+)(\d+)(\s+)')
-
-        def repl(match):
-            num = int(match.group(2))
-            try:
-                text_type = dns.rdatatype.to_text(dns.rdatatype.RdataType(num))
-                return f"{match.group(1)}{text_type}{match.group(3)}"
-            except Exception as e:
-                logging.warning(e)
-                return match.group(0)
-
-        return pattern.sub(repl, content)
-
-    try:
-        dns.zone.from_text(replace_type_codes(content), zone_name + '.', relativize=False)
-        logging.info(f"Zone {zone_name} parsed successfully")
-        return True
-    except Exception as e:
-        logging.error(f"Parse failed for zone {zone_name}: {e}")
-        return False

src/technitium.py

@@ -1,12 +1,38 @@
 import logging
 import requests
 
+import dns.zone
+import dns.rdatatype
+
 from config import *
-from helpers import validate_zone
 
 session = requests.Session()
 
 
+def validate_zone(zone_name, content) -> bool:
+    def replace_type_codes(content):
+        pattern = re.compile(r'(RRSIG\s+)(\d+)(\s+)')
+
+        def repl(match):
+            num = int(match.group(2))
+            try:
+                text_type = dns.rdatatype.to_text(dns.rdatatype.RdataType(num))
+                return f"{match.group(1)}{text_type}{match.group(3)}"
+            except Exception as e:
+                logging.warning(e)
+                return match.group(0)
+
+        return pattern.sub(repl, content)
+
+    try:
+        dns.zone.from_text(replace_type_codes(content), zone_name + '.', relativize=False)
+        logging.info(f"Zone {zone_name} parsed successfully")
+        return True
+    except Exception as e:
+        logging.error(f"Parse failed for zone {zone_name}: {e}")
+        return False
+
+
 def list_zones() -> list[dict]:
     url = f"{TECHNITIUM_API_BASE.rstrip('/')}{LIST_ZONES_ENDPOINT}?token={API_TOKEN}"
     logging.debug(f"Listing zones from {url}")