mavdol

Sandboxing Untrusted Python

Python doesn't have a built-in way to run untrusted code safely. Multiple attempts have been made, but none really succeeded.

Why? Because Python is a highly introspective object-oriented language with a mutable runtime. Core elements of the interpreter can be accessed through the object graph, frames and tracebacks, making runtime isolation difficult. This means that even aggressive restrictions can be bypassed:

# Attempt: Remove dangerous built-ins
del __builtins__.eval

arch1t3cht

What you NEED to Know Before Touching a Video File

Hanging out in subtitling and video re-editing communities, I see my fair share of novice video editors and video encoders, and see plenty of them make the classic beginner mistakes when it comes to working with videos. A man can only read "Use Handbrake to convert your mkv to an mp4 :)" so many times before losing it, so I am writing this article to channel the resulting psychic damage into something productive.

If you are new to working with videos (or, let's face it, even if you aren't), please read through this guide to avoid making mistakes that can cost you lots of computing power, storage space, or video quality.

tomhicks

/*
Copy this into the console of any web page that is interactive and doesn't
do hard reloads. You will hear your DOM changes as different pitches of
audio.

I have found this interesting for debugging, but also fun to hear web pages
render like UIs do in movies.
*/

const audioCtx = new (window.AudioContext || window.webkitAudioContext)()

DerFichtl

layout	title	published	tags
post	clamav - install and configure on mac osx	true	blog clamav

Install Clamav

Install clamav via homebrew

iddoeldor

extract db

PASS=alpine; PORT=2222; sshpass -p $PASS ssh -p $PORT root@localhost -t "cp \$(find /var/mobile/Containers/Data/Application/ -name s4l*db) /private/var/tmp/skype.db" && sshpass -p $PASS scp -P $PORT root@localhost:/private/var/tmp/skype.db .

pull & read plist

/tmp$ scp -P 2222 root@localhost:/private/var/mobile/Containers/Data/Application/F8C7294C-2B60-48EC-A987-D46B9FE4DEAE/Library/Preferences/com.skype.skype.plist .
/tmp$ sudo apt-get install libplist-utils
/tmp$ plistutil -i com.skype.skype.plist | less

bkuhl

# Using edge-git ensures we're always pulling the latest
# You can lock into a specific version using the *-git tags
# on https://hub.docker.com/_/docker/
image: docker:edge-git
services:
- docker:dind

# If you only need compose in a specific step definitely put this
# only in that step so it's not executed unnecessarily
before_script:

geddski

create-react-app comes with Jest which is awesome, but sometimes you need a real DOM/browser to test with. Here's a quick way to get up and running testing your app.

1. Create a *separate* app for testing, using create-react-app:
```
create-react-app tests
cd tests
```

2. Modify the index.html to include the Jasmine spec runner (see index.html below)
3. Modify the index.js to just run your tests rather than bootstrap a React app. (see index.js below)

ptarjan

Scaling your API with rate limiters

The following are examples of the four types rate limiters discussed in the accompanying blog post. In the examples below I've used pseudocode-like Ruby, so if you're unfamiliar with Ruby you should be able to easily translate this approach to other languages. Complete examples in Ruby are also provided later in this gist.

In most cases you'll want all these examples to be classes, but I've used simple functions here to keep the code samples brief.

Request rate limiter

This uses a basic token bucket algorithm and relies on the fact that Redis scripts execute atomically. No other operations can run between fetching the count and writing the new count.

colophonemes

CREATE TRIGGER person_notify AFTER INSERT OR UPDATE OR DELETE ON income
FOR EACH ROW EXECUTE PROCEDURE notify_trigger(
  'id',
  'email',
  'username'
);

CREATE TRIGGER income_notify AFTER INSERT OR UPDATE OR DELETE ON income
FOR EACH ROW EXECUTE PROCEDURE notify_trigger(
  'id',

zelig

see slides of a talk on the p2p network similation, testing and monitoring framework http://swarm-gateways.net/bzz:/e5fbcaad92ede8a429896ff91d5653510a16a2cf86061697648340d32bbe40a8/

p2p: network testing framework and protocol abstraction ethereum/go-ethereum#3102

Overview

The purpose of this work is to have a comprehensive and modular network testing suite, which is able to drive test harnesses for p2p network behaviour. This includes simulations as well as cluster tests on an actual network.