logging: Add real counterparts of IDNA-mapped domains in brackets

acertmgr/__init__.py

@@ -15,7 +15,7 @@ import sys
 from acertmgr import configuration, tools
 from acertmgr.authority import authority
 from acertmgr.modes import challenge_handler
-from acertmgr.tools import log
+from acertmgr.tools import log, LOG_REPLACEMENTS
 
 try:
     import pwd
@@ -139,6 +139,9 @@ def cert_revoke(cert, configs, fallback_authority, reason=None):
 def main():
     # load config
     runtimeconfig, domainconfigs = configuration.load()
+    # register idna-mapped domains as LOG_REPLACEMENTS for better readability of log output
+    LOG_REPLACEMENTS.update({k: "{} [{}]".format(k, v) for k, v in domainconfigs['domainlist_idna_mapped']})
+    # Start processing
     if runtimeconfig.get('mode') == 'revoke':
         # Mode: revoke certificate
         log("Revoking {}".format(runtimeconfig['revoke']))

acertmgr/tools.py

@@ -38,6 +38,8 @@ try:
 except ImportError:
     from urllib2 import urlopen, Request  # Python 2
 
+LOG_REPLACEMENTS = {}
+
 
 class InvalidCertificateError(Exception):
     pass
@@ -59,6 +61,9 @@ def log(msg, exc=None, error=False, warning=False):
         prefix = ""
 
     output = prefix + msg
+    for k, v in LOG_REPLACEMENTS.items():
+        output = output.replace(k, v)
+
     if exc:
         _, exc_value, _ = sys.exc_info()
         if not getattr(exc, '__traceback__', None) and exc == exc_value: