MacKentoch

Re-signing an .ipa file for iOS distribution

There are several apps I currently have to re-sign. They are apps built by various outside vendors who do not want to share the source code, but we want the apps published from our account and we do not want to give them our certificate or access to publish the apps on our behalf. ¯\_(ツ)_/¯ These are the steps I use to re-sign them. I've decided to keep the steps manual because, frankly, it's an error-prone process, something done infrequently, and a moving target. Some detail always seems to shift with every major Xcode release or App Store change.

These steps are current as of iOS 14 and Xcode 12. They assume you already have your Distribution Certificate installed in Keychain.

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I'm going to use an example named "Matt's App.ipa". If you need to provide instructions to a vendor to deliver this file to you properly, I've included what I use below.

MacKentoch

Shared Element Transitions with React Navigation and Expo (2019)

It's 2019, and creating smooth shared element transitions in react native (& expo!) is finally easy.

Ideally, as Pablo Stanley suggests, your app's navigation will use these shared transitions for similar components that appear across screens.

Is it possible to achieve the great experience above using react-native/expo? Now it is.

MacKentoch

#!/bin/bash

# This script uses traps to create try/catch/finally functionality in shell scripts.
#
# OUTPUT:
#
# Hello! We're reporting live from script
# ./try_catch2.sh: line 23: badcommand: command not found
# ./try_catch2.sh: line 23: exiting with status 127
# It's the end of the line

MacKentoch

Kali Linux Bootable USB with Persistence and Wireless on OSX

Download the appropriate Kali Linux .iso

• Download site: https://www.kali.org/downloads/

I used a 64 bit .iso image, downloaded via HTTP. I downloaded the amd64 weekly version, as the pool linux headers (needed below for installation of wireless drivers) were ahead of the stable release kernel.

Download the SHA256SUMS and SHA256SUMS.gpg files from the same location.

MacKentoch

#!/bin/sh
# Make an android app debugabble and reinstall

set -ex

DNAME="CN=Ross Patterson, OU=me, O=rpatterson.net, L=San Francisco, ST=CA, C=US"
PACKAGE_RE='^package:(/data/app/([^-]+)-.+==/(.+.apk))=.+'
MANIFEST_RE='(<application [^>]+)>'

export PATH=$HOME/Android/Sdk/platform-tools:$PATH

MacKentoch

// imports
public class ImageRotator {

        public static Bitmap rotateImage(String path) throws IOException {
            Bitmap bitmap = BitmapFactory.decodeFile(path);
            return rotateImage(bitmap);
        }

        public static Bitmap rotateImage(Bitmap bitmap) throws IOException {
            int rotate = 0;

MacKentoch

Settings up mutliple app targets in React-Native

1. yarn add react-native-config
2. react-native link react-native-config
3. Create .env files for each configuration. Ex: .env.dev, .env.prod, etc Ex:

API_ENDPOINT=https://api.myresource.com/dev
ENV=dev

4. Follow instructions for set up with react-native-config and extra steps

MacKentoch

Getting Started with NPM (as a developer)

If you haven't already set your NPM author info, now you should:

npm set init.author.name "Your Name"
npm set init.author.email "you@example.com"
npm set init.author.url "http://yourblog.com"

npm adduser

MacKentoch

https://stackoverflow.com/a/18003462/348146

None of these suggestions worked for me, because Android was appending a sequence number to the package name to produce the final APK file name (this may vary with the version of Android OS). The following sequence of commands is what worked for me on a non-rooted device:

1. Determine the package name of the app, e.g. com.example.someapp. Skip this step if you already know the package name.

   adb shell pm list packages

   Look through the list of package names and try to find a match between the app in question and the package name. This is usually easy, but note that the package name can be completely unrelated to the app name. If you can't recognize the app from the list of package names, try finding the app in Google Play using a browser. The URL for an app in Google Play contains the package name.

MacKentoch

Alamofire JSON Serialization of Objects and Collections

Alamofire is a great Swift library developed by the creator of AFNetworking @mattt. The purpose of this gist is to explain how to use the built-in power of Alamofire to serialize your JSON. In this example we will be serializing a simple blog API. First we will start with serializing a single JSON object and add complexity as we go along.

Warning: This was written before Swift 1.2

A Single JSON Serialization

This is the first JSON object that we will be serializing.