Commit: 690c1f6
Commit Details
| SHA | 690c1f6ce426c62c29e87ac132dda0f8125192ff |
|---|---|
| Tree | 5a67fd55b56735ab4e469c7d06c1c73c4c2b4c20 |
| Author | <f69e50@finnacloud.com> 1766368110 +0300 |
| Committer | <f69e50@finnacloud.com> 1766368110 +0300 |
| Message | initialize backend structure with controllers, DTOs, and configuration files |
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File: src/main/resources/static/js/csrf.js
| 1 | // CSRF Token Management |
| 2 | let csrfToken = null; |
| 3 | let tokenPromise = null; |
| 4 | |
| 5 | // Get CSRF token from server (force refresh if needed) |
| 6 | async function getCsrfToken(forceRefresh = false) { |
| 7 | // If forcing refresh, clear existing token |
| 8 | if (forceRefresh) { |
| 9 | csrfToken = null; |
| 10 | tokenPromise = null; |
| 11 | } |
| 12 | |
| 13 | // Return existing token if available and not forcing refresh |
| 14 | if (csrfToken && !forceRefresh) { |
| 15 | return csrfToken; |
| 16 | } |
| 17 | |
| 18 | // If a request is already in progress, wait for it |
| 19 | if (tokenPromise) { |
| 20 | return tokenPromise; |
| 21 | } |
| 22 | |
| 23 | // Fetch new token |
| 24 | tokenPromise = (async () => { |
| 25 | try { |
| 26 | const response = await fetch('/api/csrf-token', { |
| 27 | credentials: 'include' // Include cookies |
| 28 | }); |
| 29 | const data = await response.json(); |
| 30 | |
| 31 | if (data.success) { |
| 32 | csrfToken = data.csrfToken; |
| 33 | tokenPromise = null; |
| 34 | return csrfToken; |
| 35 | } |
| 36 | } catch (error) { |
| 37 | console.error('Error fetching CSRF token:', error); |
| 38 | tokenPromise = null; |
| 39 | } |
| 40 | |
| 41 | return null; |
| 42 | })(); |
| 43 | |
| 44 | return tokenPromise; |
| 45 | } |
| 46 | |
| 47 | // Refresh CSRF token (alias for force refresh) |
| 48 | async function refreshCsrfToken() { |
| 49 | return await getCsrfToken(true); |
| 50 | } |
| 51 | |
| 52 | // Add CSRF token to fetch request |
| 53 | async function fetchWithCsrf(url, options = {}) { |
| 54 | const method = options.method || 'GET'; |
| 55 | const stateChangingMethods = ['POST', 'PUT', 'PATCH', 'DELETE']; |
| 56 | |
| 57 | // For state-changing requests, always get a fresh token first |
| 58 | if (stateChangingMethods.includes(method.toUpperCase())) { |
| 59 | // Always refresh token before state-changing requests |
| 60 | // This ensures we have a valid token even if the previous one was invalidated |
| 61 | await refreshCsrfToken(); |
| 62 | } else if (!csrfToken) { |
| 63 | // For GET requests, only fetch if we don't have a token |
| 64 | await getCsrfToken(); |
| 65 | } |
| 66 | |
| 67 | // Add CSRF token to headers |
| 68 | const headers = { |
| 69 | ...options.headers, |
| 70 | 'X-CSRF-Token': csrfToken || '' |
| 71 | }; |
| 72 | |
| 73 | const response = await fetch(url, { |
| 74 | ...options, |
| 75 | headers, |
| 76 | credentials: 'include' // Include cookies |
| 77 | }); |
| 78 | |
| 79 | // After state-changing requests, always refresh the token |
| 80 | // The server invalidates the used token, so we need a new one for the next request |
| 81 | if (stateChangingMethods.includes(method.toUpperCase())) { |
| 82 | // Try to get new token from response header (server sends it) |
| 83 | const newToken = response.headers.get('X-New-CSRF-Token'); |
| 84 | if (newToken) { |
| 85 | csrfToken = newToken; |
| 86 | } else { |
| 87 | // If no header (or header not accessible), refresh token immediately |
| 88 | // This ensures we always have a fresh token for the next request |
| 89 | try { |
| 90 | await refreshCsrfToken(); |
| 91 | } catch (err) { |
| 92 | console.error('Error refreshing CSRF token:', err); |
| 93 | } |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | return response; |
| 98 | } |
| 99 | |
| 100 | // Initialize CSRF token on page load |
| 101 | if (document.readyState === 'loading') { |
| 102 | document.addEventListener('DOMContentLoaded', async () => { |
| 103 | await getCsrfToken(); |
| 104 | }); |
| 105 | } else { |
| 106 | // DOM already loaded |
| 107 | getCsrfToken(); |
| 108 | } |
| 109 | |
| 110 | // Make functions globally available |
| 111 | window.getCsrfToken = getCsrfToken; |
| 112 | window.refreshCsrfToken = refreshCsrfToken; |
| 113 | window.fetchWithCsrf = fetchWithCsrf; |
| 114 | |
| 115 | |
| 116 |