// -- services.vsl

service clamscan shell = #{
    timeout: "10s",
    command: "clamscan",
    args: ["--infected", "--remove", "--recursive", "/home/jdoe"],
};


service greylist db:csv = #{
    connector: "/db/user_accounts.csv",
    access: "O_RDONLY",
    refresh: "always",
    delimiter: ",",
};

// -- main.vsl

import "services" as s;

// execute clamscan with a 10 second timeout
s::clamscan.shell_run();

// query & update a csv database.
s::greylist.get("john");
s::greylist.set(["new", "user", "new.user@example.com"]);
s::greylist.rm("green");

object code554_7_1 code = #{
  base: 554,
  enhanced: "5.7.1",
  text: "Relay access denied"
};

deny(code554_7_1)

// -- main.vsl
#{
    authenticate: [
        rule "manage auth" || {
            switch ctx().auth.type {
                "Verify" => {
                  // check database for client password ...
                  accept()
                },
                "Query" => {
                    // send a custom code to the client.
                    info(db[ctx().auth.authid])
                }
            }
        }
    ]
}