mod_auth_internal_plain: Fix user creation done via mod_admin_shell

Following the new behavior in auth_internal_hashed (c8f59ce7d3cf), the account
will be created and disabled, instead of returning an error telling password
being nil when calling saslprep().

Note that mod_auth_internal_plain does not have full support for
enabled/disabled accounts, but that may be fixed in subsequent commits.

1 files changed, 4 insertions, 1 deletions

diff --git a/plugins/mod_auth_internal_plain.lua b/plugins/mod_auth_internal_plain.lua
index 0f65323c..bb3bf7c1 100644
--- a/plugins/mod_auth_internal_plain.lua
+++ b/plugins/mod_auth_internal_plain.lua
@@ -77,11 +77,14 @@ function provider.users()
 end
 
 function provider.create_user(username, password)
+	local now = os.time();
+	if password == nil then
+		return accounts:set(username, { created = now, updated = now, disabled = true });
+	end
 	password = saslprep(password);
 	if not password then
 		return nil, "Password fails SASLprep.";
 	end
-	local now = os.time();
 	return accounts:set(username, {
 		password = password;
 		created = now, updated = now;