SvelteKit CAS authentication

A set of functions to ease usage of a CAS/SSO in SvelteKit

Installation

npm install --save @macfja/sveltekit-cas

Usage

Protect all pages that start with /profile/ and only allow user to go on his own page (/profile/my-cool-username)

// src/hooks.server.ts
import { sessionHook } from "@macfja/sveltekit-session"
import { casHandler } from "@macfja/sveltekit-cas"
import type { Handle } from "@sveltejs/kit"
import { sequence } from "@sveltejs/kit/hooks"

export const handle: Handle = sequence(
    sessionHook(),
    casHandler(
        "http://0.0.0.0:8080",
        2,
        (event) => event.url.pathname.startsWith("/profile/"),
        (event, user) => {
            const regexp = event.url.pathname.match(/\/profile\/(\w+)/)
            return user !== regexp[1]
        }
    )
)

Protect endpoint, so only connected user can access it

// src/routes/api/user/server.ts
import { error } from "@sveltejs/kit"
import { getUsername } from "@macfja/sveltekit-cas"
import type { RequestHandler } from "./$types"

export const POST: RequestHandler = async (event) => {
    if (getUsername(event) !== "admin") {
        throw error(403)
    }

    // ... Do operation that only the user `admin` can do
}

export const GET: RequestHandler = async (event) => {
    if (getUsername(event) === undefined) {
        throw error(401)
    }

    // ... Do operation that only connected user can do
}

Configuration

The casHandler function take 4 parameters to change its behavior:

• casRoot: The root URL to the CAS server
• casVersion: The version of the CAS server (supported version: 1, 2, 3)
• authRequired (optional): A function to indicate if a request should have an authenticated user
• rejectAccess (optional): A function to indicate if a particular authenticated user if allowed to do a request

Contributing

Contributions are welcome. Please open up an issue or create PR if you would like to help out.

Read more in the Contributing file

License

The MIT License (MIT). Please see License File for more information.