Plugin Security with Angular's Sanitization

Create an example of a content plugin that utilizes Angular's DomSanitizer to prevent XSS and other security vulnerabilities.

import { Pipe, PipeTransform } from '@angular/core';
import { DomSanitizer, SafeHtml } from '@angular/platform-browser';

@Pipe({
  name: 'safeHtml'
})
export class SafeHtmlPipe implements PipeTransform {
  constructor(private sanitizer: DomSanitizer) { }

  transform(value: string): SafeHtml {
    // Sanitize the HTML input to prevent XSS attacks
    return this.sanitizer.bypassSecurityTrustHtml(value);
  }
}

This piece of code defines an Angular pipe that uses the DomSanitizer service to sanitize HTML content and mark it as safe to use in the template. The pipe is named 'safeHtml' and can be used in Angular templates to bind potentially unsafe HTML in a secure way, preventing XSS vulnerabilities.

import { Component, Input } from '@angular/core';

@Component({
  selector: 'app-secure-content',
  template: '<div [innerHTML]="content | safeHtml"></div>'
})
export class SecureContentComponent {
  @Input() content: string;

  // Content input will be sanitized by the safeHtml pipe before being rendered
}

This second piece of code creates an Angular component that receives an HTML string as input, which is then passed through the 'safeHtml' pipe. This ensures that any HTML content bound to the 'content' property will be sanitized before it is inserted into the DOM, offering protection against XSS attacks.