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CORS issues when running via Webstorm

Jetbrains had a Chrome extension where you could configure Webstorm to include CORS headers just fine, but it seems to not be working anymore (setting the field and hitting the apply button has no effect - reloading the extension configuration page shows that the field is still empty).

This comment was what helped me, but it was not enough. I reply to that comment with the extra instructions needed. Here's the full conversation in case that page goes down:

Ekaterina Prigara says:


Things I learned while playing with Cordova

  • use Webstorm to develop your app
  • deploy via Webstorm (it has a Cordova configuration template)
  • try your app in Chrome by clicking the Chrome button in Webstorm
  • configure JetBrains IDE plugin in Chrome to allow for cross-origin requests
  • your Android app will complain about cross-origin requests as well
  • you can debug your deployed Android app via Chrome through chrome://inspect
  • if you're previewing your page in Chrome, you may need to disable web security in order to use fetch() pointing to other domains. See this

Using HTML templates in Javascript

This is the proper way to have HTML templates and clone them in Javascript.

First add the template to your HTML:

<template id="example-template">
    <div class="example">

Plex Media Server on Ubuntu

Install it by following the instructions on the web site.

Troubleshooting Plex not seeing media files

Make sure your directories and files have the right permissions:

find . -type f -exec chmod 644 {} ; find . -type d -exec chmod 755 {} ;

View witchcraft-include-directive-example.js
// @include my-script.js
// @include "some other script.js"
setup(); // `setup` is defined in `my-script.js`
luciopaiva /
Last active Oct 14, 2018
Android APK HTTPS user certificates how-to

Android APK HTTPS user certificates how-to

Starting with Android Nougat, Google changed the way apps handle user certificates:

Apps that target API Level 24 and above no longer trust user or admin-added CAs for secure connections, by default.

This means that certificates issued by applications like [Charles][charles] or [mitmproxy][mitmproxy] are no longer accepted, so these proxies won't work for HTTPS traffic.

This tutorial explains what needs to be done to overcome that restriction and be able to sniff any Android app's HTTPS requests.

luciopaiva /
Last active Oct 14, 2018
Android APK hacking how-to

Android APK hacking how-to

Install and configure SDK

  • install Android Studio (google it)

  • configure your shell (considering Linux+Bash):

    export ANDROID_HOME=$HOME/Android/Sdk
    export PATH=$PATH:$ANDROID_HOME/tools
    export PATH=$PATH:$ANDROID_HOME/platform-tools
luciopaiva /
Created Oct 10, 2018
Inspecting changes between commits in git

List files touched:

git diff --stat commit-1 commit-2

List change counts:

git diff --shortstat commit-1 commit-2 | cat

List authors between two commits:

View file-drop-zone.js
class FileDropZone {
* @param {HTMLElement|String} dropZoneElement
constructor (dropZoneElement) {
dropZoneElement = typeof dropZoneElement === "string" ? document.getElementById(dropZoneElement) : dropZoneElement;
dropZoneElement.addEventListener("drop", this.onDrop.bind(this));
dropZoneElement.addEventListener("dragover", event => event.preventDefault());
luciopaiva / walksync.js
Last active Aug 24, 2019 — forked from kethinov/walksync.js
List all files in a directory in Node.js recursively in a synchronous fashion
View walksync.js
#!/usr/bin/env node
path = require("path"),
fs = require("fs");
* List all files in a directory recursively in a synchronous fashion
* @param {String} dir
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