saagarjha’s gists

saagarjha / AppKit Abusers

Created May 21, 2018 05:38

Apps that have special-case workarounds in Apple's core frameworks, sorted by number of exceptions (from https://worthdoingbadly.com/appkitcompat/)

saagarjha / calculate.swift

Created May 7, 2018 10:58

A small command line calculator for macOS, using Calculate.framework

	import Foundation

	let handle = dlopen("/System/Library/PrivateFrameworks/Calculate.framework/Calculate", RTLD_LAZY)
	let CalculatePerformExpression = unsafeBitCast(dlsym(handle, "CalculatePerformExpression"), to:
	(@convention(c) (UnsafePointer<CChar>, Int, Int, UnsafePointer<CChar>) -> Bool).self)
	let expression = Array(CommandLine.arguments.dropFirst()).joined(separator: " ")
	let answer = Array<CChar>(repeating: 0, count: 100)
	if CalculatePerformExpression(expression, 16, 1, answer) {
	print(String(cString: answer))
	}

saagarjha / pause4debug.c

Last active March 22, 2019 04:48

Simple dynamic library that, when injected, pauses programs during initialization

	// Dynamic library that pauses a short lived program during launch so that a
	// debugger can attach to it. To use it, compile it on macOS:
	// clang -dynamiclib pause4debug.c -o pause4debug.dylib
	// On Linux:
	// gcc -shared -fPIC pause4debug.c -o pause4debug.so
	// To use it, make the dynamic linker inject it using DYLD_INSERT_LIBRARIES or
	// LD_PRELOAD, depending on your platform. On macOS:
	// DYLD_INSERT_LIBRARIES=/path/to/pause4debug.dylib debugme
	// On Linux,
	// LD_PRELOAD=/path/to/pause4debug.so debugme

saagarjha / cd.bash

Last active February 24, 2018 23:32

Bash function that provides a similar experience to zsh's cd history

	cd() {
	# Set the current directory to the 0th history item
	cd_history[0]=$PWD
	if [[ $1 == -h ]]; then
	for i in ${!cd_history[@]}; do
	echo $i: "${cd_history[$i]}"
	done
	return
	elif [[ $1 =~ ^-[0-9]+ ]]; then
	builtin cd "${cd_history[${1//-}]}" \|\| # Remove the argument's dash

saagarjha / screensaver.swift

Last active September 26, 2019 20:26

Simple script for manipulating the screensaver setting on macOS

	import Foundation

	let arguments = CommandLine.arguments
	switch arguments.count {
	case 1:
	let moduleDict = CFPreferencesCopyAppValue("moduleDict" as CFString, "com.apple.screensaver" as CFString)
	print(moduleDict?["moduleName"] as! String)
	print(moduleDict?["path"] as! String)
	case 3:
	let moduleDict = (CFPreferencesCopyAppValue("moduleDict" as CFString, "com.apple.screensaver" as CFString) as? NSDictionary)?.mutableCopy() as? NSMutableDictionary

saagarjha / SocketAddress.swift

Last active February 12, 2018 22:56

(Broken) Swifty wrapper around POSIX sockets

	import Foundation

	protocol SockAddr { }
	extension sockaddr_in: SockAddr { }
	extension sockaddr_in6: SockAddr { }

	enum SocketAddress: CustomDebugStringConvertible {
	case ipv4(sockaddr_in)
	case ipv6(sockaddr_in6)

saagarjha / WBSAutoFillQuirks.plist

Last active April 17, 2019 18:02

List of password generation quirks that MobileSafari uses when generating passwords

	<?xml version="1.0" encoding="UTF-8"?>
	<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
	<plist version="1.0">
	<dict>
	<key>DomainsWithAssociatedCredentials</key>
	<array>
	<array>
	<string>comcast.net</string>
	<string>xfinity.com</string>
	</array>

saagarjha / xkcdSlackBot.gs

Last active April 11, 2018 06:31

Google Apps Script to post new xkcd comics to a Slack channel

	function postUpdatedxkcdIfNecessary() {
	var properties = PropertiesService.getUserProperties();

	var latestComic = JSON.parse(UrlFetchApp.fetch("http://xkcd.com/info.0.json").getContentText());

	if (latestComic["num"] > properties.getProperty("lastComic")) {
	var title = latestComic["title"];
	var imageURL = latestComic["img"];
	var altText = latestComic["alt"];
	var number = latestComic["num"];

saagarjha / git-test-pr

Last active April 1, 2017 17:22

Try out Git pull requests locally

	#!/bin/sh

	if [ $# == 1 ]; then
	git fetch origin pull/$1/head:pr-$1
	git checkout pr-$1
	elif [ $# == 2 ]; then
	git fetch $1 pull/$2/head:pr-$2
	git checkout pr-$2
	else
	echo "Usage: git test-pr [remote] pr#"

saagarjha / git-ps1-status

Last active April 1, 2017 17:23

A Git summary for your Bash PS1 prompt

	#!/usr/local/bin/bash
	# Make sure this runs on a modern bash with support for ;;& in case

	shopt -s extglob

	# Make sure we're in a git directory
	if [ -d .git ] \|\| git rev-parse --git-dir > /dev/null 2>&1; then
	# Print a leading space to separate from the rest of the PS1
	echo -n " "
	# Check our status relative to upstream

Saagar Jha saagarjha