feat(auth): add abuse protection for login and OIDC flows with consent-based authorization handling

2026-04-20 09:46:13 +00:00
parent 21f5abb49b
commit 29a21fd3b3
36 changed files with 1129 additions and 84 deletions
@@ -0,0 +1,102 @@
+import * as plugins from '../plugins.js';
+
+import { Reception } from './classes.reception.js';
+import { AbuseWindow } from './classes.abusewindow.js';
+
+export interface IAbuseProtectionConfig {
+  maxAttempts: number;
+  windowMillis: number;
+  blockDurationMillis: number;
+}
+
+export class AbuseProtectionManager {
+  public receptionRef: Reception;
+
+  public get db() {
+    return this.receptionRef.db.smartdataDb;
+  }
+
+  public CAbuseWindow = plugins.smartdata.setDefaultManagerForDoc(this, AbuseWindow);
+
+  constructor(receptionRefArg: Reception) {
+    this.receptionRef = receptionRefArg;
+  }
+
+  private normalizeIdentifier(identifierArg: string) {
+    return identifierArg.trim().toLowerCase();
+  }
+
+  private hashIdentifier(identifierArg: string) {
+    return plugins.smarthash.sha256FromStringSync(this.normalizeIdentifier(identifierArg));
+  }
+
+  private createWindowId(actionArg: string, identifierArg: string) {
+    return plugins.smarthash.sha256FromStringSync(
+      `${actionArg}:${this.hashIdentifier(identifierArg)}`
+    );
+  }
+
+  private async getWindow(actionArg: string, identifierArg: string) {
+    return this.CAbuseWindow.getInstance({
+      id: this.createWindowId(actionArg, identifierArg),
+    });
+  }
+
+  public async consumeAttempt(
+    actionArg: string,
+    identifierArg: string,
+    configArg: IAbuseProtectionConfig,
+    errorTextArg = 'Too many attempts. Please wait before trying again.'
+  ) {
+    const now = Date.now();
+    let abuseWindow = await this.getWindow(actionArg, identifierArg);
+
+    if (!abuseWindow) {
+      abuseWindow = new AbuseWindow();
+      abuseWindow.id = this.createWindowId(actionArg, identifierArg);
+      abuseWindow.data.action = actionArg;
+      abuseWindow.data.identifierHash = this.hashIdentifier(identifierArg);
+      abuseWindow.data.createdAt = now;
+    }
+
+    if (abuseWindow.isBlocked(now)) {
+      throw new plugins.typedrequest.TypedResponseError(errorTextArg);
+    }
+
+    if (abuseWindow.data.blockedUntil && abuseWindow.data.blockedUntil <= now) {
+      abuseWindow.data.attemptCount = 0;
+      abuseWindow.data.windowStartedAt = now;
+      abuseWindow.data.blockedUntil = 0;
+    }
+
+    if (
+      !abuseWindow.data.windowStartedAt ||
+      abuseWindow.data.windowStartedAt + configArg.windowMillis <= now
+    ) {
+      abuseWindow.data.attemptCount = 0;
+      abuseWindow.data.windowStartedAt = now;
+    }
+
+    abuseWindow.data.attemptCount += 1;
+    abuseWindow.data.updatedAt = now;
+    abuseWindow.data.validUntil = now + configArg.windowMillis;
+
+    if (abuseWindow.data.attemptCount > configArg.maxAttempts) {
+      abuseWindow.data.blockedUntil = now + configArg.blockDurationMillis;
+      abuseWindow.data.validUntil = abuseWindow.data.blockedUntil;
+      await abuseWindow.save();
+      throw new plugins.typedrequest.TypedResponseError(errorTextArg);
+    }
+
+    await abuseWindow.save();
+  }
+
+  public async clearAttempts(actionArg: string, identifierArg: string) {
+    const abuseWindow = await this.getWindow(actionArg, identifierArg);
+    if (!abuseWindow) {
+      return;
+    }
+
+    await abuseWindow.delete();
+  }
+}