synapse-registration/static/script.js

async function submitForm() {
    var nonce_request = await fetch("https://matrix-reg.test.lauka.dev/_synapse/admin/v1/register", {
        method: 'GET',
        redirect: 'follow',
        mode: "cors"
    })
    var nonce = await nonce_request.json()

    var username = document.getElementById("username").value
    var displayname = document.getElementById("displayname").value
    var password = document.getElementById("password").value
    var sharedsecret = document.getElementById("sharedsecret").value
    var admin = "notadmin"

    var string = `${nonce.nonce}\0${username}\0${password}\0${admin}`
    console.log("String: ", string)

    const hasher = new jsSHA("SHA-1", "TEXT", { hmacKey : { value : sharedsecret, format: "TEXT" }})
    hasher.update(string)
    var hmac = hasher.getHash('HEX')

    console.log("HMAC: ", hmac)

    var register_body = JSON.stringify({
        "nonce": nonce.nonce,
        "username": displayname,
        "password": password,
        "admin": false,
        "mac": hmac
    })

    var register_request = await fetch("https://matrix-reg.test.lauka.dev/_synapse/admin/v1/register", {
        method: 'POST',
        mode: "cors",
        body: register_body
    })

    console.log(await register_request.statusText)

}

function HandlePasswordInput() {
    var info = document.getElementById("password-info")
    var button = document.getElementById("submit-button")
    
    var messages = []

    var password = document.getElementById("password").value
    var passwordrepeat = document.getElementById("password-repeat").value

    if (password.length < 20) {
        messages.push("Password must be 20 letters or more.")
    }

    if (!(password === passwordrepeat)) {
        messages.push("Passwords must match.")
    }

    if (messages.length == 0) {
        info.style.display = 'none'
        button.removeAttribute('disabled')
    } else if (messages.length == 1) {
        info.style.display = 'block'
        info.innerHTML = messages[0]
        button.setAttribute('disabled','disabled');
    } else {
        info.style.display = 'block'
        string = messages.join(" <br/> ")
        info.innerHTML = string
        button.setAttribute('disabled','disabled');
    }
}