WordPress Plugin Security
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In this online workshop, we'll be looking at one of the most vital but overlooked aspects of developing plugins for WordPress, and that's ensuring your plugin's code is secure! We will look at why this is important and learn how to implement a security-first mindset as you add functionality to your plugins, using real-world examples.
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Common WordPress APIs - Options API
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Common WordPress APIs: Metadata
One of the things that makes WordPress so extendable is its support for metadata on its core data object types (posts, comments, users, terms). The Metadata API and associated functions create a standardized way for retrieving and manipulating metadata for these object types. In this session, we will look at how metadata is stored, and which functions can be used to store and retrieve metadata.
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In this session, we'll be reviewing some of the features included WordPress for developers, with a specific focus on plugin and theme developer additions.
Testing your plugins for PHP version compatibility
With all versions of PHP 7 now officially EOL (end of life) any plugins you develop, or have developed, must support PHP 8. While WordPress does run on PHP 8, many plugins still do not support it fully. In this workshop, we'll look at how to can test your plugins for PHP compatibility, in order to get them updated.
Common WordPress APIs_ Global Variables
Global variables are a concept in PHP that allow you to access these variables from any scope during a page request. WordPress ships with a specific set of global variables, and it's useful to know what they are, and how to use them correctly. In this session you'll learn how global variables work, the list of global variables available in a typical WordPress request, and now to correctly use and interact with them.
Testing WordPress 6.3 - Developer edition
With WordPress 6.3 due on August 8, 2023, now would be a great time to help test the release candidate, as well as confirm that your plugins and themes are ready for the 6.3 release. In this session we'll be installing the WordPress Beta Tester plugin, convert a local install to WordPress 6.3 for testing, test it against a theme that is in active development, and then revert it back to WordPress 6.2.
Common WordPress APIs: Responsive Images
WordPress contains an extensive list of APIs for performing common tasks across a WordPress site. From interacting with the database to creating responsive images, there's an API for practically everything. This session will focus on the Responsive Images API, including a brief history of responsive images in WordPress, how the API works, and how it's used for theme development.
Custom Tables in WordPress
While the default WordPress database schema is perfect for most content related data types, there may be instances where you need to create custom tables in a WordPress database. One example of this is when a plugin has a specific use case that extends beyond what the custom post type functionality of WordPress offers.
In this session, we will look at what you need to know to create and manage custom WordPress database tables, how to create and interact with these tables, and some maintenance considerations.
WordPress Coding Standards
Writing code, especially in a collaborative environment like open source, requires all participants to follow specific standards. Coding standards help avoid common coding errors, improve the readability of code, and simplify modification. In this workshop, you'll learn about the WordPress Coding Standards, where to find information about them, as well as how to automate the process of formatting your code to meet the coding standards.
Managing a WordPress Multisite Network
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Introduction to WordPress Multisite Networks
A multisite network is a collection of sites that all run off the same WordPress installation. In this tutorial, you’ll learn what a multisite network is, why you might consider using a multisite network, and walk through the steps to set one up.
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In the Developing WordPress User Roles and Capabilities tutorial, you learned how to create and apply user roles, how to add/remove capabilities from a user role, and how to check user capabilities. In this tutorial, you will learn about the built-in support for capabilities when you register a custom post type, and how you can refine these capabilities to suit your specific requirements.
Developing WordPress User Roles and Capabilities
A primer on how to develop with the built-in WordPress Roles and Capabilities system to manage user access across a WordPress site. How to create and apply user roles, how to add/remove capabilities from a user role, and how to check user capabilities.
Creating a WordPress multisite network
A multisite network can be very similar to your own personal version of WordPress.com. End users of your network can create their own sites on demand, or you can create a multisite network in which only you, the administrator, can add new sites. In this session, you'll learn about creating a multisite network, as well as walk through the steps to setting one up.
Extending WordPress: common security vulnerabilities
In the plugin security best practices tutorial we covered the 5 top ways you can ensure your plugin is developed securely. However, it's important to understand why you need to follow these principles.
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WordPress Plugin Security
- 1. Jonathan Bossenger Let’s Code Learn.WordPress.org WordPress plugin security
- 2. 2 👋🏽 Welcome! As you join, please make sure you have your local development environment ready: • A local WordPress installation • A code editor like VSCode or Sublime • An insecure plugin • https://github.com/jonathanbossenger/wp- learn-plugin- security/releases/download/1.0.0/wp-learn- plugin-security.1.0.0.zip Then, let everyone know in the chat where you’re joining us from… Hello! ○ My name is Jonathan Bossenger ○ From Cape Town, South Africa ○ Ex-developer turned code instructor ○ Sponsored contributor at Automattic ○ @jon_bossenger in Twitter
- 4. Announcements ○ Welcome, and Happy New Year! ○ Thanks to Thelma for co-hosting! ○ We are presenting in focus mode, but please feel free to enable your video. ○ You are welcome to ask questions. ○ You are welcome to post questions in the chat, or unmute to ask questions.
- 5. Announcements ○ Make sure your local install is ready ○ https://github.com/jonathanbossenger/wp-learn-plugin- security/releases/download/1.0.0/wp-learn-plugin-security.1.0.0.zip ○ If I am going too fast, please let me know! ○ We will be posting this session to https://wordpress.tv/ afterwards ○ For more WordPress focused content please visit https://learn.wordpress.org/
- 6. Learning Outcomes 1. All about plugin security • Sanitizing inputs • Data validation • Escaping outputs • Preventing invalid requests • Preventing unauthenticated users
- 7. Objectives 1 1. Setup and review the insecure plugin 2. Sanitize any incoming data 3. Validate any incoming data 4. Escape any data being rendered to the browser 5. Secure any form submissions or Ajax requests 6. Ensure any admin actions can only be performed by an admin 7
- 9. Resources ○ https://github.com/jonathanbossenger/wp-learn-plugin-security/releases/download/1.0.0/wp-learn- plugin-security.1.0.0.zip ○ https://developer.wordpress.org/plugins/security/ ○ https://developer.wordpress.org/apis/security/
Editor's Notes
- TITLE SLIDE: Make a copy of this presentation to your Google Drive, and edit to replace with your details.