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require "util.datamanager"
local datamanager = datamanager;
local log = require "util.logger".init("usermanager");
local error = error;
local hashes = require "util.hashes";
module "usermanager"
function validate_credentials(host, username, password, method)
log("debug", "User '%s' is being validated", username);
local credentials = datamanager.load(username, host, "accounts") or {};
if method == nil then method = "PLAIN"; end
if method == "PLAIN" and credentials.password then -- PLAIN, do directly
if password == credentials.password then
return true;
else
return nil, "Auth failed. Invalid username or password.";
end
end
-- must do md5
if not hashes.md5 then
return nil, "Server misconfiguration, the md5 library is not available.";
end
-- make credentials md5
local pwd = credentials.password;
if not pwd then pwd = credentials.md5; else pwd = hashes.md5(pwd); end
-- make password md5
if method == "PLAIN" then
password = hashes.md5(password or "");
elseif method ~= "DIGEST-MD5" then
return nil, "Unsupported auth method";
end
-- compare
if password == pwd then
return true;
else
return nil, "Auth failed. Invalid username or password.";
end
end
function user_exists(username, host)
return datamanager.load(username, host, "accounts") ~= nil; -- FIXME also check for empty credentials
end
function create_user(username, password, host)
return datamanager.store(username, host, "accounts", {password = password});
end
function get_supported_methods(host)
local methods = {["PLAIN"] = true}; -- TODO this should be taken from the config
if hashes.md5 then
methods["DIGEST-MD5"] = true;
end
return methods;
end
return _M;
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