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0.4.3
0.4.2
0.4.1
Compose web applications with functions
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This version has known vulnerabilities.
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lib/plug/session/cookie.ex
defmodule Plug.Session.COOKIE do
@moduledoc """
Stores the session in a cookie.
Implements a cookie store. This cookie store is based on
`Plug.MessageVerifier` which signs each cookie to ensure
they won't be tampered with.
Notice the cookie contents are still visible and therefore
private data should never be put into such store.
## Options
* `:secret` - secret token used to sign the cookie;
## Examples
# Use the session plug with the table name
plug Plug.Session, store: :cookie, key: "_my_app_session", secret: "a4f8d34f9"
"""
@behaviour Plug.Session.Store
alias Plug.MessageVerifier
def init(opts) do
secret = opts[:secret]
cond do
nil?(secret) ->
raise ArgumentError, "cookie store expects a secret as option"
byte_size(secret) < 64 ->
raise ArgumentError, "cookie store secret must be at least 64 bytes"
true ->
opts
end
end
def get(cookie, opts) do
case MessageVerifier.verify opts[:secret], cookie do
{:ok, value} -> {nil, value}
:error -> {nil, %{}}
end
end
def put(_sid, term, opts) do
MessageVerifier.generate opts[:secret], term
end
def delete(_sid, _opts) do
:ok
end
end