public boolean authenticate()

in ignite-tc-helper-web/src/main/java/org/apache/ignite/ci/web/auth/AuthenticationFilter.java [156:215]
40 lines of code
7 McCabe index (conditional complexity)

    public boolean authenticate(ContainerRequestContext reqCtx,
        String tokFull,
        IUserStorage users) {

        final StringTokenizer tokenizer = new StringTokenizer(tokFull, ":");

        final String sessId = tokenizer.nextToken();
        final String tok = tokenizer.nextToken();

        UserSession ses = users.getSession(sessId);

        if (ses == null) {
            logger.warn("Users session not found " + sessId + " enforcing login");

            return false;
        }

        if (reqCtx.getUriInfo() != null)
            logger.info("[[" + ses.username + "]] " + reqCtx.getUriInfo().getPath() + " Session:" + sessId);

        TcHelperUser user = users.getUser(ses.username);
        if (user == null) {
            logger.error("No such user " + ses.username + " for " + sessId + " enforcing login");

            reqCtx.abortWith(rspUnathorized());
            return false;
        }

        if (user.userKeyKcv == null) {
            logger.error("User not initialised " + ses.username + ",failed at " + sessId + " enforcing login");

            return false;
        }


        byte[] userKey;
        try {
            userKey = CryptUtil.aesDecrypt(Base64Util.decodeString(tok), ses.userKeyUnderToken);
            byte[] userKeyKcv = CryptUtil.aesKcv(userKey);

            if(!Arrays.equals(userKeyKcv, user.userKeyKcv)) {
                logger.error("User provided " + ses.username + " invalid token ,failed at " + sessId + " enforcing login");

                return false;
            }

        } catch (Exception e) {
            logger.info("Exception during decrypt " + e.getMessage(), e);

            return false;
        }

        ses.lastActiveTs = System.currentTimeMillis();

        users.putSession(sessId, ses);

        reqCtx.setProperty(ITcBotUserCreds._KEY, createCredsProv(user, userKey));

        return true;
    }