private void addCookie()

in dbus-java/src/main/java/org/freedesktop/dbus/connections/SASL.java [94:146]

• 38 lines of code
• 9 McCabe index (conditional complexity)

    private void addCookie(String _context, String _id, long _timestamp, String _cookie) throws IOException {
        String homedir = System.getProperty("user.home");
        File keydir = new File(homedir + "/.dbus-keyrings/");
        File cookiefile = new File(homedir + "/.dbus-keyrings/" + _context);
        File lock = new File(homedir + "/.dbus-keyrings/" + _context + ".lock");
        File temp = new File(homedir + "/.dbus-keyrings/" + _context + ".temp");

        // ensure directory exists
        if (!keydir.exists()) {
            keydir.mkdirs();
        }

        // acquire lock
        long start = System.currentTimeMillis();
        while (!lock.createNewFile() && LOCK_TIMEOUT > (System.currentTimeMillis() - start)) {
            ;
        }

        // read old file
        List<String> lines = new ArrayList<>();
        if (cookiefile.exists()) {
            BufferedReader r = new BufferedReader(new InputStreamReader(new FileInputStream(cookiefile)));
            String s = null;
            while (null != (s = r.readLine())) {
                String[] line = s.split(" ");
                long time = Long.parseLong(line[1]);
                // expire stale cookies
                if ((_timestamp - time) < COOKIE_TIMEOUT) {
                    lines.add(s);
                }
            }
            r.close();
        }

        // add cookie
        lines.add(_id + " " + _timestamp + " " + _cookie);

        // write temp file
        PrintWriter w = new PrintWriter(new FileOutputStream(temp));
        for (String l : lines) {
            w.println(l);
        }
        w.close();

        // atomically move to old file
        if (!temp.renameTo(cookiefile)) {
            cookiefile.delete();
            temp.renameTo(cookiefile);
        }

        // remove lock
        lock.delete();
    }