-- Somewhere global:
PwdDB = {};  -- The password database object

-- In the Initialize function:
PwdDB, ErrCode, ErrMsg = sqlite3.open("pwd.sqlite");
-- TODO: Handle errors in ErrCode

-- In the login hook:
local UserName = ...;  -- Username of the player logging in
local PasswordGiven = ...;  -- What password is the user logging in with?
local ShouldAllowLogin = false;
local function ProcessRow(UserData, NumCols, Values, Names)
	for i = 1, NumCols do
		if (Names[i] == "Password") then  -- "Password" is the column name
			ShouldAllowLogin = (Values[i] == PasswordGiven);
		end
	end
	return 0;
end
local Res = PwdDB:exec("SELECT * FROM Passwords WHERE Username=\"" .. UserName .."\"", ProcessRow, nil);
if (Res ~= sqlite3.OK) then
	LOG("SQL query failed: " .. Res .. " (" .. PwdDB:errmsg() .. ")");
end;
-- ShouldAllowLogin now has the bool value saying whether to allow the user in or not