Hide content based on basic authorization

This plugin is meant to be used on a PHP enabled server.

First you need a .htaccess in your root directory.

# Enable Basic Auth
AuthType Basic
AuthName "SomeDescription"

# Point to our password file
AuthUserFile /path/to/.htpasswd
Require valid-user

# Redirect all `*.html` to `*.php`
RewriteEngine On
RewriteRule ^(.*)\.html$ $1.php [L]

Then in a .htpasswd file, you can enter username/password pairs. Passwords are hashed using the MD5 algorithm. You can generate a password with

$ htpasswd /path/to/.htpasswd user1

or use this website

Here is an example .htpasswd

user1:$apr1$OS3sZCvx$KRmhPMpZ9bYs4INph8s6w.
user2:$apr1$3Vfr8Z9d$UeKjYDdJK2XFQRUPw7h9T.

You can set the usernames using the plugins configuration in the book.json:

{
  "plugins": ["hidden"],
  "pluginsConfig": {
    "hidden": {
      "usernames": ["user1", "user2"],
      "path": "_book",
      "env": "production"
    }
  }
}

usernames: is an array of authorized users (default: [])

path: is the path to your generated html GitBook (default: _book)

env: NODE_ENV value you want this plugin to be fully executed in. Useful for local development as this plugin breaks functionality of gitbook serve (default: production)

Now in your markdown, you can have hidden blocks:

{% hidden %}
### This will be hidden except for authorized users
{% endhidden %}