kconner

macOS Internals

Understand your Mac and iPhone more deeply by tracing the evolution of Mac OS X from prelease to Swift. John Siracusa delivers the details.

Starting Points

How to use this gist

You've got two main options:

saagarjha

// To compile: clang++ -arch x86_64 -arch arm64 -std=c++20 library_injector.cpp -lbsm -lEndpointSecurity -o library_injector,
// then codesign with com.apple.developer.endpoint-security.client and run the
// program as root.

#include <EndpointSecurity/EndpointSecurity.h>
#include <algorithm>
#include <array>
#include <bsm/libbsm.h>
#include <cstdint>
#include <cstdlib>

zhuowei

@import Darwin;
@import ObjectiveC;
@import CloudKit;

extern bool GEOConfigGetBOOL(int feature, void* something);

// Hooks feature flags in a resigned Maps.app to return true.
// Usage:
// clang -shared -fmodules -o libmaps_inject.dylib maps_inject.m \
//   "$(xcrun

steipete

struct AnchorButton<Content: View>: View {
    typealias Action = (_ sender: AnyObject?) -> Void
    let callback: Action
    var content: Content
    @StateObject private var viewWrapper = ViewWrapper(view: UIView(frame: .zero))

    init(action: @escaping Action, @ViewBuilder label: () -> Content) {
        self.callback = action
        self.content = label()
    }

snickell

# Use Google Cloud Platform stackdriver with python structlog

from google.cloud.logging import Client
from google.cloud.logging import _helpers
from google.cloud.logging.handlers import CloudLoggingHandler
from google.cloud.logging.handlers.transports.background_thread import _Worker

# pip install python-json-logger
from pythonjsonlogger import jsonlogger

kastiglione

Debugging the Swift Toolchain

Use these steps to debug components of the Swift toolchain. This allows you to see Swift's source code from the debugger – instead of disassembly. The debugger can also provide some variable names and values. This has been initially tested with libswiftCore.dylib.

These instructions were updated as of Swift 5.2.1.

Prerequisites

NSExceptional

iOS Shared Cache Extraction

Having fallen off the iOS-exploration train due to completing my Masters and other commitments, I have finally climbed back aboard in pursuit of understanding the telephony stack.

Like most things in iOS that are used frequently, the vast majority of the frameworks and libraries used in the telephony stack reside in the DYLD shared cache located at /System/Library/Caches/com.apple.dyld/dyld_shared_cache_armv7.

In this post I am going to explain how to go about extracting this cache file so that you can then work with each library individually.

Get The Cache

The first step in all of this is to copy the cache over to your local machine. I did this using a program called iExplorer, but you can just as easily do it over SSH. As a side note, you can connect to your iDevice using SSH over USB if you install a tool called iProxy.

ErikSaunier

[Unit]
Description=Connecting MySQL Client from Compute Engine using the Cloud SQL Proxy
Documentation=https://cloud.google.com/sql/docs/mysql/connect-compute-engine
Requires=networking.service
After=networking.service

[Service]
WorkingDirectory=/usr/local/bin
ExecStart=/usr/local/bin/cloud_sql_proxy -dir=/var/run/cloud-sql-proxy -instances=<INSTANCE_CONNECTION_NAME>=tcp:3306
Restart=always

iammerrick

import React from 'react';

const MIN_SCALE = 1;
const MAX_SCALE = 4;
const SETTLE_RANGE = 0.001;
const ADDITIONAL_LIMIT = 0.2;
const DOUBLE_TAP_THRESHOLD = 300;
const ANIMATION_SPEED = 0.04;
const RESET_ANIMATION_SPEED = 0.08;
const INITIAL_X = 0;

JaviSoto

import UIKit
import Rswift

struct NibResource: NibResourceType {
    let name: String
    let bundle: NSBundle

    init(name: String, bundle: NSBundle = NSBundle.mainBundle()) {
        self.name = name
        self.bundle = bundle