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phoenix_live_view
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0.1.0
Rich, real-time user experiences with server-rendered HTML
Retired package: Bug in form serialization
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Files
lib/phoenix_live_view/session.ex
defmodule Phoenix.LiveView.Session do
@moduledoc false
alias Phoenix.LiveView.{Session, Route, Static}
defstruct id: nil,
view: nil,
root_view: nil,
parent_pid: nil,
root_pid: nil,
session: %{},
redirected?: false,
router: nil,
flash: nil,
live_session_name: nil,
assign_new: []
def main?(%Session{} = session), do: session.router != nil and session.parent_pid == nil
def authorize_root_redirect(%Session{} = session, %Route{} = route) do
%Session{live_session_name: session_name} = session
case route.live_session do
%{name: ^session_name} ->
{:ok, replace_root(session, route.view, self())}
%{} ->
:error
end
end
defp replace_root(%Session{} = session, new_root_view, root_pid) when is_pid(root_pid) do
%{
session
| view: new_root_view,
root_view: new_root_view,
root_pid: root_pid,
assign_new: [],
redirected?: true
}
end
@doc """
Verifies the session token.
Returns the decoded map of session data or an error.
## Examples
iex> verify_session(AppWeb.Endpoint, "topic", encoded_token, static_token)
{:ok, %Session{} = decoded_session}
iex> verify_session(AppWeb.Endpoint, "topic", "bad token", "bac static")
{:error, :invalid}
iex> verify_session(AppWeb.Endpoint, "topic", "expired", "expired static")
{:error, :expired}
"""
def verify_session(endpoint, topic, session_token, static_token) do
with {:ok, %{id: id} = session} <- Static.verify_token(endpoint, session_token),
:ok <- verify_topic(topic, id),
{:ok, static} <- verify_static_token(endpoint, id, static_token) do
merged_session = Map.merge(session, static)
live_session_name = merged_session[:live_session_name]
session = %Session{
id: id,
view: merged_session.view,
root_view: merged_session.root_view,
parent_pid: merged_session.parent_pid,
root_pid: merged_session.root_pid,
session: merged_session.session,
assign_new: merged_session.assign_new,
live_session_name: live_session_name,
# optional keys
router: merged_session[:router],
flash: merged_session[:flash]
}
{:ok, session}
end
end
defp verify_topic("lv:" <> session_id, session_id), do: :ok
defp verify_topic(_topic, _session_id), do: {:error, :invalid}
defp verify_static_token(_endpoint, _id, nil), do: {:ok, %{assign_new: []}}
defp verify_static_token(endpoint, id, token) do
case Static.verify_token(endpoint, token) do
{:ok, %{id: ^id}} = ok -> ok
{:ok, _} -> {:error, :invalid}
{:error, _} = error -> error
end
end
end