File

modulemanager: Add plugin load filter that reads module metadata from source Metadata in modules is added using lines formatted as: --% key: value Where key is a valid identifier string, and value is also a string (leading and trailing whitespace are trimmed during parsing). The initial supported keys are: --% requires_core_features: feature1, feature2, ... --% conflicts_core_features: feature1, feature2. ... These 'features' map to features reported by the new core.features module. A benefit of this load-time metadata approach compared to e.g. something like module:requires()/module:conflicts() is that we can continue to look in module search paths for a suitable module. Aborting an already-loaded module due to a version conflict would be too late.

local saslprep = require "util.encodings".stringprep.saslprep;

local _ENV = nil;
-- luacheck: std none

local function external(self, message)
	message = saslprep(message);
	local state
	self.username, state = self.profile.external(message);

	if state == false then
		return "failure", "account-disabled";
	elseif state == nil  then
		return "failure", "not-authorized";
	elseif state == "expired" then
		return "false", "credentials-expired";
	end

	return "success";
end

local function init(registerMechanism)
	registerMechanism("EXTERNAL", {"external"}, external);
end

return {
	init = init;
}