local sasldb = "/usr/pkg/etc/sasldb.db"

function auth_passdb_lookup(req)
	local sasldbq = string.gsub(sasldb, "'", "'\\''")
	local userq = string.gsub(req.user, "'", "'\\''")
	local cmd =
	    string.format("db -V hash '%s' '%s' 2>/dev/null", sasldbq, userq)
	local h = io.popen(cmd, "r")
	local pw = h:read("a")
	local success, status, num = h:close()
	if not success or status ~= "exit" or num ~= 0 then
		return dovecot.auth.PASSDB_RESULT_USER_UNKNOWN
	end
	pw = string.gsub(pw, "\n$", "")
	return dovecot.auth.PASSDB_RESULT_OK, { password = pw }
end