Add support for forcing AR auth for a repo. (#45)

* add support for forcing AR auth for a repo if "ar_auth=1" is set in the repo config

* fix issue where fallback keyword isnt supported, like in CentOS 9 DNF

* Change repository config option to "artifact_registry_oauth" to be more explicit to any sysadmins

dnf/artifact-registry.py

@@ -33,9 +33,14 @@ def __init__(self, base, cli):
   def config(self):
     """ Setup http headers to repos with baseurl option containing pkg.dev. """
     for repo in self.base.repos.iter_enabled():
+      # Check if the 'artifact_registry_oauth' option is set in the repository's config.
+      if repo.cfg.has_option(repo.id, 'artifact_registry_oauth') and repo.cfg.getboolean(repo.id, 'artifact_registry_oauth'):
+        self._add_headers(repo)
+        break  # Don't add more than one Authorization header.
       # We don't have baseurl option so skip it earlier.
       if not hasattr(repo, 'baseurl'):
         continue
+      # Check if any repo urls are for Artifact Registry.
       for baseurl in repo.baseurl:
         # We stop checking if an error has been flagged.
         if baseurl.startswith('https://') and '-yum.pkg.dev/' in baseurl and not self.error:

yum/artifact-registry.py

@@ -27,6 +27,11 @@ def prereposetup_hook(conduit):
   if not token:
     return
   for repo in conduit.getRepos().listEnabled():
+    # Check if the 'artifact_registry_oauth' option is set in the repository's config.
+    if repo.cfg.has_option(repo.id, 'artifact_registry_oauth') and repo.cfg.getboolean(repo.id, 'artifact_registry_oauth'):
+      _add_headers(token, repo)
+      break  # Stop looking at URLs
+    # Check if any repo urls are for Artifact Registry.
     for url in repo.urls:
       if 'pkg.dev' in url and url.startswith('https://'):
         _add_headers(token, repo)