feat: implement ss/vless validations

fe-app-podkop/src/validators/validateShadowsocksUrl.ts

@@ -0,0 +1,81 @@
+import { ValidationResult } from './types.js';
+
+// TODO refactor current validation and add tests
+export function validateShadowsocksUrl(url: string): ValidationResult {
+  if (!url.startsWith('ss://')) {
+    return {
+      valid: false,
+      message: 'Invalid Shadowsocks URL: must start with ss://',
+    };
+  }
+
+  try {
+    const mainPart = url.includes('?') ? url.split('?')[0] : url.split('#')[0];
+
+    const encryptedPart = mainPart.split('/')[2]?.split('@')[0];
+
+    if (!encryptedPart) {
+      return {
+        valid: false,
+        message: 'Invalid Shadowsocks URL: missing credentials',
+      };
+    }
+
+    try {
+      const decoded = atob(encryptedPart);
+
+      if (!decoded.includes(':')) {
+        return {
+          valid: false,
+          message:
+            'Invalid Shadowsocks URL: decoded credentials must contain method:password',
+        };
+      }
+    } catch (e) {
+      if (!encryptedPart.includes(':') && !encryptedPart.includes('-')) {
+        return {
+          valid: false,
+          message:
+            'Invalid Shadowsocks URL: missing method and password separator ":"',
+        };
+      }
+    }
+
+    const serverPart = url.split('@')[1];
+
+    if (!serverPart) {
+      return {
+        valid: false,
+        message: 'Invalid Shadowsocks URL: missing server address',
+      };
+    }
+
+    const [server, portAndRest] = serverPart.split(':');
+
+    if (!server) {
+      return {
+        valid: false,
+        message: 'Invalid Shadowsocks URL: missing server',
+      };
+    }
+
+    const port = portAndRest ? portAndRest.split(/[?#]/)[0] : null;
+
+    if (!port) {
+      return { valid: false, message: 'Invalid Shadowsocks URL: missing port' };
+    }
+
+    const portNum = parseInt(port, 10);
+
+    if (isNaN(portNum) || portNum < 1 || portNum > 65535) {
+      return {
+        valid: false,
+        message: 'Invalid port number. Must be between 1 and 65535',
+      };
+    }
+  } catch (e) {
+    return { valid: false, message: 'Invalid Shadowsocks URL: parsing failed' };
+  }
+
+  return { valid: true, message: 'Valid' };
+}