mrmichalis

Adventures in Python Core Dumping

After watching Bryan Cantrill's presentation on [Running Aground: Debugging Docker in Production][aground] I got all excited (and strangely nostalgic) about the possibility of core-dumping server-side Python apps whenever they go awry. This would theoretically allow me to fully inspect the state of the program at the point it exploded, rather than relying solely on the information of a stack trace.

mrmichalis

#!/usr/bin/env python2
# ref:
# http://pastebin.com/15KaENGf
# https://www.reddit.com/r/linux/comments/5a3ek9/angelize_proof_of_concept_tool_to_undaemonize_a/
# exec angelize gpg-agent --daemon

# so what's the deal and what is this?

# it turns out that Linux has an interesting feature in prctl that allows any process to register itself as the child set_child_subreaper
# you know when a parent's process dies before the process and how it gets reparented to pid 1 then? 

mrmichalis

Frontend Development

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---

mrmichalis

#!/bin/bash

# You must accept the Oracle Binary Code License
# http://www.oracle.com/technetwork/java/javase/terms/license/index.html
# usage: get_jdk.sh <rpm|tar> <jdk_version>
# jdk_version: default 8
# rpm

EXT="rpm"
JDK_VERSION="8"

mrmichalis

#Mac OS X

Mensch coding font

Apps

• Webkit
• Chrome
• Firefox

mrmichalis

import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import java.io.*;

/** Establish a SSL connection to a host and port, writes a byte and
 * prints the response. See
 * http://confluence.atlassian.com/display/JIRA/Connecting+to+SSL+services
 */
public class SSLPoke {
    public static void main(String[] args) {

mrmichalis

#!/bin/bash

# Source: http://toomuchdata.com/2012/06/25/how-to-install-python-2-7-3-on-centos-6-2/

# Install stuff #
#################

# Install development tools and some misc. necessary packages
yum -y groupinstall "Development tools"
yum -y install zlib-devel  # gen'l reqs

mrmichalis

import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import java.io.*;

/** Establish a SSL connection to a host and port, writes a byte and
 * prints the response. See
 * http://confluence.atlassian.com/display/JIRA/Connecting+to+SSL+services
 * https://confluence.atlassian.com/download/attachments/117455/SSLPoke.java
 */
public class SSLPoke {

mrmichalis

# source this code in a Bash shell ($ . django-csrftoken-login-demo.bash),
# and run with a DB name as parameter (e.g. $ django-csrftoken-login-demo demo)

django-csrftoken-login-demo() {
	# -- CHANGE THESE VALUES TO MATCH YOUR ACCOUNT --
	local HOSTING_USERID=9988
	local HOSTING_PANEL_USER='[email protected]'
	local HOSTING_PANEL_PASS='my secret login password'
	local HOSTING_DB_PREFIX='username_'
	local DB_NAME=$HOSTING_DB_PREFIX$1

mrmichalis

"""
A simple proxy server. Usage:

http://hostname:port/p/(URL to be proxied, minus protocol)

For example:

http://localhost:8080/p/www.google.com

"""