Tommie N. Carter, Jr. mingsai

My OS X “VPN only” Setup For #30C3

You should never let passwords or private data be transmitted over an untrusted network (your neighbor’s, the one at Starbucks or the company) anyway, but on a hacker congress like the #30C3, this rule is almost vital.

Hackers get bored easily, and when they’re bored, they’re starting to look for things to play with. And a network with several thousand connected users is certainly an interesting thing to play with. Some of them might start intercepting the data on the network or do other nasty things with the packets that they can get.

If these packets are encrypted, messing with them is much harder (but not impossible! – see the end of this article). So you want your packets to be always encrypted. And the best way to do that is by using a VPN.

Target audience

OBSOLETE

This entire guide is based on an old version of Homebrew/Node and no longer applies. It was only ever intended to fix a specific error message which has since been fixed. I've kept it here for historical purposes, but it should no longer be used. Homebrew maintainers have fixed things and the options mentioned don't exist and won't work.

I still believe it is better to manually install npm separately since having a generic package manager maintain another package manager is a bad idea, but the instructions below don't explain how to do that.

Fixing npm On Mac OS X for Homebrew Users

Installing node through Homebrew can cause problems with npm for globally installed packages. To fix it quickly, use the solution below. An explanation is also included at the end of this document.

	#import "ViewController.h"
	#import <QuartzCore/QuartzCore.h>

	@interface ViewController ()

	@end

	@implementation ViewController {
	CALayer *_layer;
	}

	#!/bin/sh
	# if you're using ZSH, change the shebang above to "#!/bin/zsh -i"

	if [ ${#} -ne 2 ]; then
	echo >&2 Usage: $(basename ${0}) old-version new-version
	exit 1
	fi

	home_path=$(cd ~; pwd -P)
	old_version=${1}

	@interface NSManagedObject (Serialization)

	- (NSDictionary*) toDictionary;

	- (void) populateFromDictionary:(NSDictionary*)dict;

	+ (NSManagedObject) createManagedObjectFromDictionary:(NSDictionary)dict
	inContext:(NSManagedObjectContext*)context;

	@end

	// See http://stackoverflow.com/a/257424/283482
	// Normally a "do {…} while (0)" is used to prevent the problem described in the linked answer,
	// but this would prevent us from using "continue" or "break" in the block parameter.
	// The problem is fixed thanks to the "if (1) {…}", doing the same as the "do {…} while (0)".

	#define AssertTrueOrRunBlock(condition, block, description, ...)\
	if (1) {\
	__PRAGMA_PUSH_NO_EXTRA_ARG_WARNINGS\
	BOOL check = !!(condition);\
	NSCAssert(check, (description), ##__VA_ARGS__);\

	//
	// YMKeyboardLayoutHelperView.m
	// ios-chat
	//
	// Created by Steven Hepting on 7/17/13.
	// Copyright (c) 2013 Yammer. All rights reserved.
	//

	#import "YMKeyboardLayoutHelperView.h"
	#import "UIView+LayoutAdditions.h"

	/***************************************************
	* Simple and elegant, no code complexity
	* Disadvantages: Requires warming all data into server memory (could take a long time for MBs of data or millions of records)
	* (This disadvantage should go away as we add optimizations to the core product)
	***************************************************/

	var fb = firebase.database.ref();

	/**
	* @param {string} emailAddress

	// There's a lot that bothers me about NSFileWrappers:
	// * Directories are mutable, but regular files and symlinks aren't.
	// * You can't change from one type to another.
	// * ...but the -readFromURL:... method can violate both of these rules. Probably.
	// * Wrappers include a .filename, but this is only relevant to their containing folders.
	// * Wrappers include a .preferredFilename, but this is only relevant to the folder they're being added to, and doesn't matter after being added.
	// * There's no way to replace a file wrapper in a directory, except by removing the old one and then adding the new one.
	// Here's how I would design a file wrapper replacement.

	typedef NS_ENUM(NSUInteger, GBSFileWrapperType) {

	// MultiExporter.jsx
	// Version 0.1
	// Version 0.2 Adds PNG and EPS exports
	// Version 0.3 Adds support for exporting at different resolutions
	// Version 0.4 Adds support for SVG, changed EPS behaviour to minimise output filesize
	// Version 0.5 Fixed cropping issues
	// Version 0.6 Added inner padding mode to prevent circular bounds clipping
	//
	// Copyright 2013 Tom Byrne
	// Comments or suggestions to [email protected]