=== modified file 'click/commands/install.py'
--- click/commands/install.py	2014-08-07 21:25:48 +0000
+++ click/commands/install.py	2014-08-25 19:02:21 +0000
@@ -23,7 +23,11 @@
 
 from gi.repository import Click
 
-from click.install import ClickInstaller, ClickInstallerError
+from click.install import (
+    ClickInstaller,
+    ClickInstallerAuditError,
+    ClickInstallerError,
+)
 
 
 def run(argv):
@@ -60,6 +64,9 @@
     try:
         installer.install(
             package_path, user=options.user, all_users=options.all_users)
+    except ClickInstallerAuditError as e:
+        print("Audit failed for %s: %s" % (package_path, e), file=sys.stderr)
+        return 2
     except ClickInstallerError as e:
         print("Cannot install %s: %s" % (package_path, e), file=sys.stderr)
         return 1

=== modified file 'pk-plugin/pk-plugin-click.c'
--- pk-plugin/pk-plugin-click.c	2014-08-19 07:06:25 +0000
+++ pk-plugin/pk-plugin-click.c	2014-08-25 20:28:29 +0000
@@ -515,10 +515,14 @@
 	JsonObject *manifest;
 	gchar *pkid = NULL;
 
-	argv = g_malloc0_n (6, sizeof (*argv));
+	argv = g_malloc0_n (7, sizeof (*argv));
 	i = 0;
 	argv[i++] = g_strdup ("click");
 	argv[i++] = g_strdup ("install");
+	if (!pk_bitfield_contain (pk_transaction_get_transaction_flags (transaction),
+				 PK_TRANSACTION_FLAG_ENUM_ONLY_TRUSTED)) {
+		argv[i++] = g_strdup ("--allow-unauthenticated");
+	}
 	username = click_get_username_for_uid
 		(pk_transaction_get_uid (transaction));
 	if (username)
@@ -535,9 +539,13 @@
 	if (!g_spawn_check_exit_status (click_status, NULL)) {
 		gchar *summary = g_strdup_printf ("%s failed to install.",
 						  filename);
-		click_pk_error (plugin,
-				PK_ERROR_ENUM_PACKAGE_FAILED_TO_INSTALL,
-				summary, click_stderr);
+		if(WEXITSTATUS(click_status) == 2)
+			pk_backend_job_error_code
+				(plugin->job, PK_ERROR_ENUM_MISSING_GPG_SIGNATURE, "reauth");
+		else
+			click_pk_error (plugin,
+					PK_ERROR_ENUM_PACKAGE_FAILED_TO_INSTALL,
+					summary, click_stderr);
 		g_free (summary);
 		ret = FALSE;
 		goto out;