1 files changed, 35 insertions, 0 deletions

diff --git a/client/src/app/shared/renderer/html-renderer.service.ts b/client/src/app/shared/renderer/html-renderer.service.ts
new file mode 100644
index 000000000..d49df9b6d
--- /dev/null
+++ b/client/src/app/shared/renderer/html-renderer.service.ts
@@ -0,0 +1,35 @@
+import { Injectable } from '@angular/core'
+import { LinkifierService } from '@app/shared/renderer/linkifier.service'
+import * as sanitizeHtml from 'sanitize-html'
+
+@Injectable()
+export class HtmlRendererService {
+
+  constructor (private linkifier: LinkifierService) {
+
+  }
+
+  toSafeHtml (text: string) {
+    // Convert possible markdown to html
+    const html = this.linkifier.linkify(text)
+
+    return sanitizeHtml(html, {
+      allowedTags: [ 'a', 'p', 'span', 'br' ],
+      allowedSchemes: [ 'http', 'https' ],
+      allowedAttributes: {
+        'a': [ 'href', 'class', 'target' ]
+      },
+      transformTags: {
+        a: (tagName, attribs) => {
+          return {
+            tagName,
+            attribs: Object.assign(attribs, {
+              target: '_blank',
+              rel: 'noopener noreferrer'
+            })
+          }
+        }
+      }
+    })
+  }
+}