Created
October 23, 2018 11:43
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Login attempt
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| const MAX_TRY_COUNT = 5; | |
| const TIME_OF_DENINE = 10 * 60 * 1000; // 10 minutes | |
| const loginAttempts = {}; | |
| function createLoginAttemptIfNotExits(username) { | |
| if (loginAttempts[username]) { | |
| loginAttempts[username] = { try: 0, lastTry: 0 }; | |
| } | |
| } | |
| function resetAttempt(username) { | |
| createLoginAttemptIfNotExits(username); | |
| loginAttempts[username].try = 0; | |
| loginAttempts[username].lastTry = 0; | |
| } | |
| function onLoginFail(username) { | |
| createLoginAttemptIfNotExits(username); | |
| loginAttempts[username].try += 1; | |
| loginAttempts[username].lastTry = Date.now(); | |
| } | |
| function onLoginSuccess(username) { | |
| resetAttempt(username); | |
| } | |
| function isValidLoginRequest(username) { | |
| const attempt = loginAttempts[username]; | |
| if (attempt && attempt.try >= MAX_TRY_COUNT) { | |
| if (Date.now() - attempt.lastTry < TIME_OF_DENINE) { | |
| return false; | |
| } else { | |
| resetAttempt(username); | |
| return true; | |
| } | |
| } | |
| return true; | |
| } |
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