state = false : disabled
state = true : enabled
state = nil : non-existant
-
-plain:
- function(username, realm)
- return password, state;
- end
-
-plain-test:
- function(username, realm, password)
- return true or false, state;
- end
-
-digest-md5:
- function(username, domain, realm, encoding) -- domain and realm are usually the same; for some broken
- -- implementations it's not
- return digesthash, state;
- end
-
-digest-md5-test:
- function(username, domain, realm, encoding, digesthash)
- return true or false, state;
- end
]]
local method = {};
-- get a list of possible SASL mechanims to use
function method:mechanisms()
- local mechanisms = {}
- for backend, f in pairs(self.profile) do
- if backend_mechanism[backend] then
- for _, mechanism in ipairs(backend_mechanism[backend]) do
- if not self.restrict:contains(mechanism) then
- mechanisms[mechanism] = true;
+ local mechanisms = self.mechs;
+ if not mechanisms then
+ mechanisms = {}
+ for backend, f in pairs(self.profile) do
+ if backend_mechanism[backend] then
+ for _, mechanism in ipairs(backend_mechanism[backend]) do
+ if not self.restrict:contains(mechanism) then
+ mechanisms[mechanism] = true;
+ end
end
end
end
+ self.mechs = mechanisms;
end
- self["possible_mechanisms"] = mechanisms;
- return array.collect(keys(mechanisms));
+ return mechanisms;
end
-- select a mechanism to use
return false;
end
- self.mech_i = mechanisms[mechanism]
- if self.mech_i == nil then
- return false;
- end
- return true;
+ self.mech_i = mechanisms[self:mechanisms()[mechanism] and mechanism];
+ return (self.mech_i ~= nil);
end
-- feed new messages to process into the library