escape | Ethereum Package Registry | Blockchain library

The unicode_escape codec displays the ASCII characters as characters, and only non-ASCII characters as escape codes. If you want all to be escape codes, you have to format yourself:

You could use the split() command in Python to break up your sting into a list. You can then iterate over the elements inside the list. You could do this al follows:

Use double quote for the identifier, and one single quote inside:

I tried to explain in the comments, but obviously I wasn't clear. Here are two potential solutions to your problem:

Using your 'grep/xargs' method:

First of all your data probably isn't saved in database the way you presented. In all likelihood it's stored there without any encoding (as it should be).

EJS in itself, when used correctly, takes care of encoding output for you so that you can safely construct parameterized HTML. But in your case you want to disable this protection to render raw HTML, so yes, you must be careful. There are a couple of security controls at your disposal.

1. DOMPurify

I haven't used the xss library personally, it seems to have a lot of downloads and probably it's not a bad option. But DOMPurify is probably better. It also doesn't require configuration and has built-in support for trusted-types (I'll get to that in a minute).

You would use it twice. First on server-side when the HTML is submitted by the user, and second on client-side when the HTML is rendered by EJS.

If you are serious about security then you will connect anomaly alerts from the server-side purification to your SIEM/SOC etc. Then you will know when someone has attempted an XSS attack on your website.

2. Sandboxed Iframes

Another client-side control that you can implement is sandboxed iframes. Instead of just rendering the HTML on the page, you create an IFRAME, give it a properly configured sandbox attribute, and then set the purified HTML as the content. Now even if something goes wrong with the purification, the malicious HTML would be isolated in its own world.

3. Content Security Policy

The coolest and (when used properly) most effective defence against XSS is CSP. How it works is that you give your website restrictions such as "do not execute scripts", "do not load images", etc. And then you allow the scripts that you do want to execute, and nothing else. Now if an attacker manages to inject a script, link, form, etc. on the page, it will not work because it hasn't been specifically allowed.

I've written about CSP at length here, you will even find specific examples for your case (NodeJS and EJS) with CodeSandbox examples on that article. And in general about XSS protection you can read more here.

Hope this helps!

This is an error in Arelle, which shows up for Python 3.6 and later. There is a pull request for it , but that is still open (since July 2017). Given that Python 3.6 has been out for quite a while, I don't know why this hasn't been fixed.

You are using the lxml branch, which has been stale for 10 years. So perhaps this error has actually been fixed (even if the pull request is still open) on the master brach, but not on the lxml branch. Try installing from master first, if that is an option for you.

You didn't describe omitting pg_replslot during your rsync, as the docs recommend. If you didn't omit it, then now your replica has a replication slot which is a clone of the one on the master. But if nothing ever connects to that slot on the replica and advances the cutoff, then the WAL never gets released to recycling. To fix you just need to shutdown the replica, remove that directory, restart it, (and wait for the next restart point to finish).

Do they need to go to wal_archive folder on the disk just like they go to wal_archive folder on the master node?

No, that is optional not necessary. It is set by archive_mode = always if you want it to happen.

You're very close! As Chamika pointed out in the comments, you're interacting with two different instances of your Test class. The new keyword means just that, a new instance is created of Test.

To correct this, you can create either a global variable or pass the instance to your Start() and Stop() methods.

First, I'm going to show the global variable solution.

Without editing your Test class, I've modified your Program class. I've created a global variable: myTimer. myTimer is set to a new instance of the Test class. I also removed the other instance creations from your Start() and Stop() methods. Because they are in the same Program class, they will be able to interact with your global variable whether it's set to public or private!

In order to understand what's going on, I'll reformat the code a bit in order to make it more clear and explicit:

Your original code: