WebAuthN auth

This commit is contained in:
bluepython508
2023-11-05 01:12:02 +00:00
parent 45e4e9f5da
commit 092930a24f
33 changed files with 1123 additions and 463 deletions

View File

@@ -115,7 +115,7 @@ defmodule SsoBsnWeb.CoreComponents do
phx-click={JS.push("lv:clear-flash", value: %{key: @kind}) |> hide("##{@id}")}
role="alert"
class={[
"fixed top-2 right-2 mr-2 w-80 sm:w-96 z-50 rounded-lg p-3 ring-1",
"fixed bottom-2 right-2 mr-2 w-80 sm:w-96 z-50 rounded-lg p-3 ring-1",
@kind == :info && "bg-emerald-50 text-emerald-800 ring-emerald-500 fill-cyan-900",
@kind == :error && "bg-rose-50 text-rose-900 shadow-md ring-rose-500 fill-rose-900"
]}
@@ -147,8 +147,8 @@ defmodule SsoBsnWeb.CoreComponents do
def flash_group(assigns) do
~H"""
<div id={@id}>
<.flash kind={:info} title="Success!" flash={@flash} />
<.flash kind={:error} title="Error!" flash={@flash} />
<.flash kind={:info} title="Success!" flash={@flash} id={"#{@id}-info"} />
<.flash kind={:error} title="Error!" flash={@flash} id={"#{@id}-error"} />
<.flash
id="client-error"
kind={:error}

View File

@@ -1,29 +1,3 @@
<header class="px-4 sm:px-6 lg:px-8">
<div class="flex items-center justify-between border-b border-zinc-100 py-3 text-sm">
<div class="flex items-center gap-4">
<a href="/">
<img src={~p"/images/logo.svg"} width="36" />
</a>
<p class="bg-brand/5 text-brand rounded-full px-2 font-medium leading-6">
v<%= Application.spec(:phoenix, :vsn) %>
</p>
</div>
<div class="flex items-center gap-4 font-semibold leading-6 text-zinc-900">
<a href="https://twitter.com/elixirphoenix" class="hover:text-zinc-700">
@elixirphoenix
</a>
<a href="https://github.com/phoenixframework/phoenix" class="hover:text-zinc-700">
GitHub
</a>
<a
href="https://hexdocs.pm/phoenix/overview.html"
class="rounded-lg bg-zinc-100 px-2 py-1 hover:bg-zinc-200/80"
>
Get Started <span aria-hidden="true">&rarr;</span>
</a>
</div>
</div>
</header>
<main class="px-4 py-20 sm:px-6 lg:px-8">
<div class="mx-auto max-w-2xl">
<.flash_group flash={@flash} />

View File

@@ -12,6 +12,47 @@
</script>
</head>
<body class="bg-white antialiased">
<ul class="relative z-10 flex items-center gap-4 px-4 sm:px-6 lg:px-8 justify-end">
<%= if @current_user do %>
<li class="text-[0.8125rem] leading-6 text-zinc-900">
<%= @current_user.username %>
</li>
<li>
<.link
href={~p"/users/settings"}
class="text-[0.8125rem] leading-6 text-zinc-900 font-semibold hover:text-zinc-700"
>
Settings
</.link>
</li>
<li>
<.link
href={~p"/users/log_out"}
method="delete"
class="text-[0.8125rem] leading-6 text-zinc-900 font-semibold hover:text-zinc-700"
>
Log out
</.link>
</li>
<% else %>
<li>
<.link
href={~p"/users/register"}
class="text-[0.8125rem] leading-6 text-zinc-900 font-semibold hover:text-zinc-700"
>
Register
</.link>
</li>
<li>
<.link
href={~p"/users/log_in"}
class="text-[0.8125rem] leading-6 text-zinc-900 font-semibold hover:text-zinc-700"
>
Log in
</.link>
</li>
<% end %>
</ul>
<%= @inner_content %>
</body>
</html>

View File

@@ -1,222 +1 @@
<.flash_group flash={@flash} />
<div class="left-[40rem] fixed inset-y-0 right-0 z-0 hidden lg:block xl:left-[50rem]">
<svg
viewBox="0 0 1480 957"
fill="none"
aria-hidden="true"
class="absolute inset-0 h-full w-full"
preserveAspectRatio="xMinYMid slice"
>
<path fill="#EE7868" d="M0 0h1480v957H0z" />
<path
d="M137.542 466.27c-582.851-48.41-988.806-82.127-1608.412 658.2l67.39 810 3083.15-256.51L1535.94-49.622l-98.36 8.183C1269.29 281.468 734.115 515.799 146.47 467.012l-8.928-.742Z"
fill="#FF9F92"
/>
<path
d="M371.028 528.664C-169.369 304.988-545.754 149.198-1361.45 665.565l-182.58 792.025 3014.73 694.98 389.42-1689.25-96.18-22.171C1505.28 697.438 924.153 757.586 379.305 532.09l-8.277-3.426Z"
fill="#FA8372"
/>
<path
d="M359.326 571.714C-104.765 215.795-428.003-32.102-1349.55 255.554l-282.3 1224.596 3047.04 722.01 312.24-1354.467C1411.25 1028.3 834.355 935.995 366.435 577.166l-7.109-5.452Z"
fill="#E96856"
fill-opacity=".6"
/>
<path
d="M1593.87 1236.88c-352.15 92.63-885.498-145.85-1244.602-613.557l-5.455-7.105C-12.347 152.31-260.41-170.8-1225-131.458l-368.63 1599.048 3057.19 704.76 130.31-935.47Z"
fill="#C42652"
fill-opacity=".2"
/>
<path
d="M1411.91 1526.93c-363.79 15.71-834.312-330.6-1085.883-863.909l-3.822-8.102C72.704 125.95-101.074-242.476-1052.01-408.907l-699.85 1484.267 2837.75 1338.01 326.02-886.44Z"
fill="#A41C42"
fill-opacity=".2"
/>
<path
d="M1116.26 1863.69c-355.457-78.98-720.318-535.27-825.287-1115.521l-1.594-8.816C185.286 163.833 112.786-237.016-762.678-643.898L-1822.83 608.665 571.922 2635.55l544.338-771.86Z"
fill="#A41C42"
fill-opacity=".2"
/>
</svg>
</div>
<div class="px-4 py-10 sm:px-6 sm:py-28 lg:px-8 xl:px-28 xl:py-32">
<div class="mx-auto max-w-xl lg:mx-0">
<svg viewBox="0 0 71 48" class="h-12" aria-hidden="true">
<path
d="m26.371 33.477-.552-.1c-3.92-.729-6.397-3.1-7.57-6.829-.733-2.324.597-4.035 3.035-4.148 1.995-.092 3.362 1.055 4.57 2.39 1.557 1.72 2.984 3.558 4.514 5.305 2.202 2.515 4.797 4.134 8.347 3.634 3.183-.448 5.958-1.725 8.371-3.828.363-.316.761-.592 1.144-.886l-.241-.284c-2.027.63-4.093.841-6.205.735-3.195-.16-6.24-.828-8.964-2.582-2.486-1.601-4.319-3.746-5.19-6.611-.704-2.315.736-3.934 3.135-3.6.948.133 1.746.56 2.463 1.165.583.493 1.143 1.015 1.738 1.493 2.8 2.25 6.712 2.375 10.265-.068-5.842-.026-9.817-3.24-13.308-7.313-1.366-1.594-2.7-3.216-4.095-4.785-2.698-3.036-5.692-5.71-9.79-6.623C12.8-.623 7.745.14 2.893 2.361 1.926 2.804.997 3.319 0 4.149c.494 0 .763.006 1.032 0 2.446-.064 4.28 1.023 5.602 3.024.962 1.457 1.415 3.104 1.761 4.798.513 2.515.247 5.078.544 7.605.761 6.494 4.08 11.026 10.26 13.346 2.267.852 4.591 1.135 7.172.555ZM10.751 3.852c-.976.246-1.756-.148-2.56-.962 1.377-.343 2.592-.476 3.897-.528-.107.848-.607 1.306-1.336 1.49Zm32.002 37.924c-.085-.626-.62-.901-1.04-1.228-1.857-1.446-4.03-1.958-6.333-2-1.375-.026-2.735-.128-4.031-.61-.595-.22-1.26-.505-1.244-1.272.015-.78.693-1 1.31-1.184.505-.15 1.026-.247 1.6-.382-1.46-.936-2.886-1.065-4.787-.3-2.993 1.202-5.943 1.06-8.926-.017-1.684-.608-3.179-1.563-4.735-2.408l-.043.03a2.96 2.96 0 0 0 .04-.029c-.038-.117-.107-.12-.197-.054l.122.107c1.29 2.115 3.034 3.817 5.004 5.271 3.793 2.8 7.936 4.471 12.784 3.73A66.714 66.714 0 0 1 37 40.877c1.98-.16 3.866.398 5.753.899Zm-9.14-30.345c-.105-.076-.206-.266-.42-.069 1.745 2.36 3.985 4.098 6.683 5.193 4.354 1.767 8.773 2.07 13.293.51 3.51-1.21 6.033-.028 7.343 3.38.19-3.955-2.137-6.837-5.843-7.401-2.084-.318-4.01.373-5.962.94-5.434 1.575-10.485.798-15.094-2.553Zm27.085 15.425c.708.059 1.416.123 2.124.185-1.6-1.405-3.55-1.517-5.523-1.404-3.003.17-5.167 1.903-7.14 3.972-1.739 1.824-3.31 3.87-5.903 4.604.043.078.054.117.066.117.35.005.699.021 1.047.005 3.768-.17 7.317-.965 10.14-3.7.89-.86 1.685-1.817 2.544-2.71.716-.746 1.584-1.159 2.645-1.07Zm-8.753-4.67c-2.812.246-5.254 1.409-7.548 2.943-1.766 1.18-3.654 1.738-5.776 1.37-.374-.066-.75-.114-1.124-.17l-.013.156c.135.07.265.151.405.207.354.14.702.308 1.07.395 4.083.971 7.992.474 11.516-1.803 2.221-1.435 4.521-1.707 7.013-1.336.252.038.503.083.756.107.234.022.479.255.795.003-2.179-1.574-4.526-2.096-7.094-1.872Zm-10.049-9.544c1.475.051 2.943-.142 4.486-1.059-.452.04-.643.04-.827.076-2.126.424-4.033-.04-5.733-1.383-.623-.493-1.257-.974-1.889-1.457-2.503-1.914-5.374-2.555-8.514-2.5.05.154.054.26.108.315 3.417 3.455 7.371 5.836 12.369 6.008Zm24.727 17.731c-2.114-2.097-4.952-2.367-7.578-.537 1.738.078 3.043.632 4.101 1.728.374.388.763.768 1.182 1.106 1.6 1.29 4.311 1.352 5.896.155-1.861-.726-1.861-.726-3.601-2.452Zm-21.058 16.06c-1.858-3.46-4.981-4.24-8.59-4.008a9.667 9.667 0 0 1 2.977 1.39c.84.586 1.547 1.311 2.243 2.055 1.38 1.473 3.534 2.376 4.962 2.07-.656-.412-1.238-.848-1.592-1.507Zm17.29-19.32c0-.023.001-.045.003-.068l-.006.006.006-.006-.036-.004.021.018.012.053Zm-20 14.744a7.61 7.61 0 0 0-.072-.041.127.127 0 0 0 .015.043c.005.008.038 0 .058-.002Zm-.072-.041-.008-.034-.008.01.008-.01-.022-.006.005.026.024.014Z"
fill="#FD4F00"
/>
</svg>
<h1 class="text-brand mt-10 flex items-center text-sm font-semibold leading-6">
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</h1>
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fill="#18181B"
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View File

@@ -0,0 +1,26 @@
defmodule SsoBsnWeb.UserSessionController do
use SsoBsnWeb, :controller
alias SsoBsn.Accounts
alias SsoBsnWeb.UserAuth
def login(conn, %{"token" => login_token}) do
case Accounts.consume_login_token(login_token) do
{:ok, user} ->
conn
|> UserAuth.log_in_user(user) # TODO: pass through remember-me value?
|> redirect(to: ~p"/users/settings")
{:error, error} ->
dbg(error)
conn
|> put_flash(:error, "Invalid login token: #{inspect(error)}")
|> redirect(to: ~p"/users/log_in")
end
end
def delete(conn, _params) do
conn
|> put_flash(:info, "Logged out successfully.")
|> UserAuth.log_out_user()
end
end

View File

@@ -0,0 +1,65 @@
defmodule SsoBsnWeb.UserLoginLive do
use SsoBsnWeb, :live_view
alias SsoBsn.Accounts
def render(assigns) do
~H"""
<div class="mx-auto max-w-sm">
<.header class="text-center">
Sign in to account
<:subtitle>
Don't have an account?
<.link navigate={~p"/users/register"} class="font-semibold text-brand hover:underline">
Sign up
</.link>
for an account now.
</:subtitle>
</.header>
<.simple_form
for={@form}
id="login_form"
action={~p"/users/log_in"}
phx-update="ignore"
phx-submit="login"
phx-hook="authenticationHook"
>
<.input field={@form[:username]} type="text" label="Username" />
<:actions>
<.input field={@form[:remember_me]} type="checkbox" label="Keep me logged in" />
</:actions>
<:actions>
<.button phx-disable-with="Signing in..." class="w-full" disabled={@authenticating}>
Sign in <span aria-hidden="true">→</span>
</.button>
</:actions>
</.simple_form>
</div>
"""
end
def mount(_params, _session, socket) do
{:ok, socket |> assign(form: to_form(%{"username" => "", "remember_me" => false}), authenticating: false)}
end
def handle_event("login", %{"username" => username}, socket) do
{challenge, challenge_client} = Accounts.authentication_challenge(username)
{:noreply,
socket
|> assign(challenge: challenge, authenticating: true)
|> push_event("authentication-challenge", challenge_client)}
end
def handle_event("authentication-credential", params, socket) do
case Accounts.authenticate_user(socket.assigns.challenge, params) do
{:ok, user} ->
login_token = Accounts.generate_user_login_token(user)
{:noreply, socket |> redirect(to: ~p"/users/log_in/#{login_token}")}
{:error, error} ->
{:noreply, socket |> put_flash(:error, inspect(error))}
end
end
end

View File

@@ -0,0 +1,108 @@
defmodule SsoBsnWeb.UserRegistrationLive do
use SsoBsnWeb, :live_view
alias SsoBsn.Accounts
alias SsoBsn.Accounts.User
def render(assigns) do
~H"""
<div class="mx-auto max-w-sm">
<.header class="text-center">
Register for an account
<:subtitle>
Already registered?
<.link navigate={~p"/users/log_in"} class="font-semibold text-brand hover:underline">
Sign in
</.link>
to your account now.
</:subtitle>
</.header>
<.simple_form
for={@form}
id="registration_form"
phx-submit="save"
phx-change="validate"
phx-hook="registrationHook"
phx-trigger-action={@trigger_submit}
action={~p"/users/log_in?_action=registered"}
method="post"
>
<.error :if={@check_errors}>
Oops, something went wrong! Please check the errors below.
</.error>
<.input field={@form[:username]} type="text" label="Username" required />
<:actions>
<.button phx-disable-with="Creating account..." class="w-full">Create an account</.button>
</:actions>
</.simple_form>
</div>
"""
end
def mount(_params, _session, socket) do
changeset = Accounts.change_user_registration(%User{})
socket =
socket
|> assign(trigger_submit: false, check_errors: false)
|> assign_form(changeset)
{:ok, socket, temporary_assigns: [form: nil]}
end
def handle_event("save", %{"user" => user_params}, socket) do
case Accounts.register_user(user_params) do
{:ok, user} ->
changeset = Accounts.change_user_registration(user)
{challenge, challenge_client} = Accounts.registration_challenge(user)
{
:noreply,
socket
# |> assign(trigger_submit: true)
|> assign_form(changeset)
|> assign(user: user)
|> assign(challenge: challenge)
|> push_event("registration-challenge", challenge_client)
}
{:error, %Ecto.Changeset{} = changeset} ->
{:noreply, socket |> assign(check_errors: true) |> assign_form(changeset)}
end
end
def handle_event("validate", %{"user" => user_params}, socket) do
changeset = Accounts.change_user_registration(%User{}, user_params)
{:noreply, assign_form(socket, Map.put(changeset, :action, :validate))}
end
def handle_event("registration-complete", params, socket) do
%{user: user, challenge: challenge} = socket.assigns
case Accounts.register_key(user, challenge, params) do
{:ok, _key} ->
login_token = Accounts.generate_user_login_token(user)
{:noreply, socket |> redirect(to: ~p"/users/log_in/#{login_token}")}
{:error, error} ->
dbg(error)
{:noreply, socket |> put_flash(:error, "An error occured")}
end
end
def handle_event("error", payload, socket),
do: {:noreply, socket |> put_flash(:error, inspect(payload))}
defp assign_form(socket, %Ecto.Changeset{} = changeset) do
form = to_form(changeset, as: "user")
if changeset.valid? do
assign(socket, form: form, check_errors: false)
else
assign(socket, form: form)
end
end
end

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@@ -0,0 +1,69 @@
defmodule SsoBsnWeb.UserSettingsLive do
use SsoBsnWeb, :live_view
alias SsoBsn.Accounts
def render(assigns) do
~H"""
<.header class="text-center">
Account Settings
</.header>
<div class="space-y-12 divide-y">
<div class="space-y-2">
<.header>Keys</.header>
<ol>
<li :for={key <- @current_user.keys}><pre class="truncate"><%= key.key_id %></pre></li>
</ol>
<.button id="settings-add-key" phx-hook="registrationHook" phx-click="register">
Register additional key
</.button>
</div>
<div class="space-y-2">
<%= if !@login_url do %>
<.button id="show-login-url" phx-click="show-login-url">Show login url</.button>
<% else %>
<pre><%= @login_url %></pre>
<% end %>
</div>
</div>
"""
end
def mount(_params, _session, socket) do
{:ok, socket |> assign(login_url: nil)}
end
def handle_event("register", _, socket) do
{challenge, challenge_client} = Accounts.registration_challenge(socket.assigns.current_user)
{:noreply,
socket
|> assign(challenge: challenge)
|> push_event("registration-challenge", challenge_client)}
end
def handle_event("registration-complete", params, socket) do
%{current_user: user, challenge: challenge} = socket.assigns
case Accounts.register_key(user, challenge, params) do
{:ok, _key} ->
{:noreply,
socket |> assign(current_user: Accounts.reload_user(socket.assigns.current_user))}
{:error, error} ->
dbg(error)
{:noreply, socket |> put_flash(:error, "An error occured")}
end
end
def handle_event("show-login-url", %{}, socket) do
token = Accounts.generate_user_login_token(socket.assigns.current_user)
{:noreply,
socket |> assign(login_url: url(socket, ~p"/users/log_in/#{token}"))}
end
def handle_event("error", payload, socket),
do: {:noreply, socket |> put_flash(:error, inspect(payload))}
end

View File

@@ -1,6 +1,8 @@
defmodule SsoBsnWeb.Router do
use SsoBsnWeb, :router
import SsoBsnWeb.UserAuth
pipeline :browser do
plug :accepts, ["html"]
plug :fetch_session
@@ -8,6 +10,7 @@ defmodule SsoBsnWeb.Router do
plug :put_root_layout, html: {SsoBsnWeb.Layouts, :root}
plug :protect_from_forgery
plug :put_secure_browser_headers
plug :fetch_current_user
end
pipeline :api do
@@ -25,7 +28,7 @@ defmodule SsoBsnWeb.Router do
# pipe_through :api
# end
# Enable LiveDashboard and Swoosh mailbox preview in development
# Enable LiveDashboard in development
if Application.compile_env(:sso_bsn, :dev_routes) do
# If you want to use the LiveDashboard in production, you should put
# it behind authentication and allow only admins to access it.
@@ -38,7 +41,36 @@ defmodule SsoBsnWeb.Router do
pipe_through :browser
live_dashboard "/dashboard", metrics: SsoBsnWeb.Telemetry
forward "/mailbox", Plug.Swoosh.MailboxPreview
end
end
## Authentication routes
scope "/", SsoBsnWeb do
pipe_through [:browser, :redirect_if_user_is_authenticated]
live_session :redirect_if_user_is_authenticated,
on_mount: [{SsoBsnWeb.UserAuth, :redirect_if_user_is_authenticated}] do
live "/users/register", UserRegistrationLive, :new
live "/users/log_in", UserLoginLive, :new
end
get "/users/log_in/:token", UserSessionController, :login
post "/users/log_in", UserSessionController, :create
end
scope "/", SsoBsnWeb do
pipe_through [:browser, :require_authenticated_user]
live_session :require_authenticated_user,
on_mount: [{SsoBsnWeb.UserAuth, :ensure_authenticated}] do
live "/users/settings", UserSettingsLive, :edit
end
end
scope "/", SsoBsnWeb do
pipe_through [:browser]
delete "/users/log_out", UserSessionController, :delete
end
end

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@@ -0,0 +1,227 @@
defmodule SsoBsnWeb.UserAuth do
use SsoBsnWeb, :verified_routes
import Plug.Conn
import Phoenix.Controller
alias SsoBsn.Accounts
# Make the remember me cookie valid for 60 days.
# If you want bump or reduce this value, also change
# the token expiry itself in UserToken.
@max_age 60 * 60 * 24 * 60
@remember_me_cookie "_sso_bsn_web_user_remember_me"
@remember_me_options [sign: true, max_age: @max_age, same_site: "Lax"]
@doc """
Logs the user in.
It renews the session ID and clears the whole session
to avoid fixation attacks. See the renew_session
function to customize this behaviour.
It also sets a `:live_socket_id` key in the session,
so LiveView sessions are identified and automatically
disconnected on log out. The line can be safely removed
if you are not using LiveView.
"""
def log_in_user(conn, user, params \\ %{}) do
token = Accounts.generate_user_session_token(user)
user_return_to = get_session(conn, :user_return_to)
conn
|> renew_session()
|> put_token_in_session(token)
|> maybe_write_remember_me_cookie(token, params)
|> redirect(to: user_return_to || signed_in_path(conn))
end
defp maybe_write_remember_me_cookie(conn, token, %{"remember_me" => "true"}) do
put_resp_cookie(conn, @remember_me_cookie, token, @remember_me_options)
end
defp maybe_write_remember_me_cookie(conn, _token, _params) do
conn
end
# This function renews the session ID and erases the whole
# session to avoid fixation attacks. If there is any data
# in the session you may want to preserve after log in/log out,
# you must explicitly fetch the session data before clearing
# and then immediately set it after clearing, for example:
#
# defp renew_session(conn) do
# preferred_locale = get_session(conn, :preferred_locale)
#
# conn
# |> configure_session(renew: true)
# |> clear_session()
# |> put_session(:preferred_locale, preferred_locale)
# end
#
defp renew_session(conn) do
conn
|> configure_session(renew: true)
|> clear_session()
end
@doc """
Logs the user out.
It clears all session data for safety. See renew_session.
"""
def log_out_user(conn) do
user_token = get_session(conn, :user_token)
user_token && Accounts.delete_user_session_token(user_token)
if live_socket_id = get_session(conn, :live_socket_id) do
SsoBsnWeb.Endpoint.broadcast(live_socket_id, "disconnect", %{})
end
conn
|> renew_session()
|> delete_resp_cookie(@remember_me_cookie)
|> redirect(to: ~p"/")
end
@doc """
Authenticates the user by looking into the session
and remember me token.
"""
def fetch_current_user(conn, _opts) do
{user_token, conn} = ensure_user_token(conn)
user = user_token && Accounts.get_user_by_session_token(user_token)
assign(conn, :current_user, user)
end
defp ensure_user_token(conn) do
if token = get_session(conn, :user_token) do
{token, conn}
else
conn = fetch_cookies(conn, signed: [@remember_me_cookie])
if token = conn.cookies[@remember_me_cookie] do
{token, put_token_in_session(conn, token)}
else
{nil, conn}
end
end
end
@doc """
Handles mounting and authenticating the current_user in LiveViews.
## `on_mount` arguments
* `:mount_current_user` - Assigns current_user
to socket assigns based on user_token, or nil if
there's no user_token or no matching user.
* `:ensure_authenticated` - Authenticates the user from the session,
and assigns the current_user to socket assigns based
on user_token.
Redirects to login page if there's no logged user.
* `:redirect_if_user_is_authenticated` - Authenticates the user from the session.
Redirects to signed_in_path if there's a logged user.
## Examples
Use the `on_mount` lifecycle macro in LiveViews to mount or authenticate
the current_user:
defmodule SsoBsnWeb.PageLive do
use SsoBsnWeb, :live_view
on_mount {SsoBsnWeb.UserAuth, :mount_current_user}
...
end
Or use the `live_session` of your router to invoke the on_mount callback:
live_session :authenticated, on_mount: [{SsoBsnWeb.UserAuth, :ensure_authenticated}] do
live "/profile", ProfileLive, :index
end
"""
def on_mount(:mount_current_user, _params, session, socket) do
{:cont, mount_current_user(socket, session)}
end
def on_mount(:ensure_authenticated, _params, session, socket) do
socket = mount_current_user(socket, session)
if socket.assigns.current_user do
{:cont, socket}
else
socket =
socket
|> Phoenix.LiveView.put_flash(:error, "You must log in to access this page.")
|> Phoenix.LiveView.redirect(to: ~p"/users/log_in")
{:halt, socket}
end
end
def on_mount(:redirect_if_user_is_authenticated, _params, session, socket) do
socket = mount_current_user(socket, session)
if socket.assigns.current_user do
{:halt, Phoenix.LiveView.redirect(socket, to: signed_in_path(socket))}
else
{:cont, socket}
end
end
defp mount_current_user(socket, session) do
Phoenix.Component.assign_new(socket, :current_user, fn ->
if user_token = session["user_token"] do
Accounts.get_user_by_session_token(user_token)
end
end)
end
@doc """
Used for routes that require the user to not be authenticated.
"""
def redirect_if_user_is_authenticated(conn, _opts) do
if conn.assigns[:current_user] do
conn
|> redirect(to: signed_in_path(conn))
|> halt()
else
conn
end
end
@doc """
Used for routes that require the user to be authenticated.
If you want to enforce the user email is confirmed before
they use the application at all, here would be a good place.
"""
def require_authenticated_user(conn, _opts) do
if conn.assigns[:current_user] do
conn
else
conn
|> put_flash(:error, "You must log in to access this page.")
|> maybe_store_return_to()
|> redirect(to: ~p"/users/log_in")
|> halt()
end
end
defp put_token_in_session(conn, token) do
conn
|> put_session(:user_token, token)
|> put_session(:live_socket_id, "users_sessions:#{Base.url_encode64(token)}")
end
defp maybe_store_return_to(%{method: "GET"} = conn) do
put_session(conn, :user_return_to, current_path(conn))
end
defp maybe_store_return_to(conn), do: conn
defp signed_in_path(_conn), do: ~p"/users/settings"
end