Graham McIntire
00aad3cb98
Add a "Forgot your password?" flow off the login page. A 24-hour reset_password token is emailed on request, the landing page lets the user pick a new password, and all other tokens for the user are revoked on success. The request endpoint returns the same flash regardless of whether the email matches a user so that attackers can't enumerate accounts.
63 lines
1.9 KiB
Elixir
63 lines
1.9 KiB
Elixir
defmodule MicrowavepropWeb.UserResetPasswordController do
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use MicrowavepropWeb, :controller
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alias Microwaveprop.Accounts
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plug :get_user_by_reset_password_token when action in [:edit, :update]
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def new(conn, _params) do
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render(conn, :new)
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end
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def create(conn, %{"user" => %{"email" => email}}) do
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if user = Accounts.get_user_by_email(email) do
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{:ok, _email} =
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Accounts.deliver_user_reset_password_instructions(
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user,
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&url(~p"/users/reset-password/#{&1}")
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)
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end
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# Always respond the same way whether or not the email exists — this is
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# a deliberate anti-enumeration measure. If we redirected differently on
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# a miss, an attacker could iterate emails to discover registered accounts.
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conn
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|> put_flash(
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:info,
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"If your email is in our system, you will receive instructions to reset your password shortly."
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)
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|> redirect(to: ~p"/users/log-in")
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end
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def edit(conn, _params) do
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render(conn, :edit,
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changeset: Accounts.change_user_password(conn.assigns.user),
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token: conn.assigns.token
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)
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end
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def update(conn, %{"user" => user_params}) do
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case Accounts.reset_user_password(conn.assigns.user, user_params) do
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{:ok, _} ->
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conn
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|> put_flash(:info, "Password reset successfully.")
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|> redirect(to: ~p"/users/log-in")
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{:error, changeset} ->
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render(conn, :edit, changeset: changeset, token: conn.assigns.token)
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end
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end
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defp get_user_by_reset_password_token(conn, _opts) do
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%{"token" => token} = conn.params
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if user = Accounts.get_user_by_reset_password_token(token) do
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conn |> assign(:user, user) |> assign(:token, token)
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else
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conn
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|> put_flash(:error, "Reset link is invalid or it has expired.")
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|> redirect(to: ~p"/users/reset-password")
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|> halt()
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end
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end
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end
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