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nova src nova_security_plugin.erl
Raw

src/nova_security_plugin.erl 

-module(nova_security_plugin).

-behaviour(nova_plugin).



-include_lib("nova/include/nova.hrl").



-export([

         pre_http_request/2,

         post_http_request/2,

         plugin_info/0

        ]).



%%--------------------------------------------------------------------

%% @doc

%% Pre-request callback

%% @end

%%--------------------------------------------------------------------

-spec pre_http_request(State :: nova_http_handler:nova_http_state(), Options :: map()) ->

                              {ok, State0 :: nova_http_handler:nova_http_state()} |

                              {stop, State0 :: nova_http_handler:nova_http_state()} |

                              {error, Reason :: term()}.

pre_http_request(State = #{req := Req, secure := {Module, Function}}, _Options) ->

    try Module:Function(Req) of

        {true, AuthData} ->

            {ok, State#{controller_data =>

                            #{auth_data => AuthData}}};

        true ->

            {ok, State};

        false ->

            {ok, State2} = nova_http_handler:render_page(401, State),

            {stop, State2};

        {redirect, Route} ->

            Req0 = cowboy_req:set_resp_headers(#{<<"Location">> => list_to_binary(Route)}, Req),

            {stop, State#{resp_status := 302, req := Req0}}

    catch

        Class:Reason ->

            Msg = io_lib:format("Security module: ~p:~p failed with ~p/~p", [Module, Function, Class, Reason]),

            ?ERROR(Msg),

            {error, Msg}

    end;

pre_http_request(State, _Options) ->

    {ok, State}.





%%--------------------------------------------------------------------

%% @doc

%% Post-request callback

%% @end

%%--------------------------------------------------------------------

-spec post_http_request(State :: nova_http_handler:nova_http_state(), Options :: map()) ->

                               {ok, State0 :: nova_http_handler:nova_http_state()} |

                               {stop, State0 :: nova_http_handler:nova_http_state()} |

                               {error, Reason :: term()}.

post_http_request(State, _Options) ->

    {ok, State}.





%%--------------------------------------------------------------------

%% @doc

%% nova_plugin callback. Returns information about the plugin.

%% @end

%%--------------------------------------------------------------------

-spec plugin_info() -> {Title :: binary(),

                        Version :: binary(),

                        Author :: binary(),

                        Description :: binary(),

                        Options :: [{Key :: atom(), OptionDescription :: binary()}]}.

plugin_info() ->

    {<<"Nova Security Plugin">>,

     <<"0.0.1">>,

     <<"Nova Team <info@novaframework.org">>,

     <<"Plugin that handles the security around paths.">>,

    []}.