[IMP] mail_quoted_reply: Sanitize HTML body before quoting

As we are adding HTML from external messages into the mail composer
HTML widget, we do not control what is in there and it could break
the webclient or making it unresponsive depending on its content.

Sanitizing the body of the quoted message might not solve all the
issues, but it at least provides a hook for extra processing.

mail_quoted_reply/models/mail_message.py

@@ -2,12 +2,16 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
 from odoo import _, models
-from odoo.tools import format_datetime
+from odoo.tools import format_datetime, html_sanitize
 
 
 class MailMessage(models.Model):
     _inherit = "mail.message"
 
+    def _get_sanitized_body(self):
+        self.ensure_one()
+        return html_sanitize(self.body)
+
     def _prep_quoted_reply_body(self):
         return """
             <div style="margin: 0px; padding: 0px;">
@@ -30,7 +34,7 @@ def _prep_quoted_reply_body(self):
             email_from=self.email_from,
             date=format_datetime(self.env, self.date),
             subject=self.subject,
-            body=self.body,
+            body=self._get_sanitized_body(),
             signature=self.env.user.signature,
             str_date=_("Date"),
             str_subject=_("Subject"),

mail_quoted_reply/readme/CONTRIBUTORS.md

@@ -4,3 +4,4 @@
 - Laurence Labusch \<<lala@labiso.de>\>
 - Dani Forga
 - Tris Doan \<<tridm@trobz.com>\>
+- Akim Juillerat \<<akim.juillerat@camptocamp.com>>