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|
-module(shr_player).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-type id() :: binary().
-record
(
player,
{
id :: id(),
username :: binary(),
% {salt(crypto:strong_rand_bytes(128)), hash(sha384)}
password :: {binary(), binary()},
token :: binary(), % salt(crypto:strong_rand_bytes(512))
email :: binary(),
last_active :: integer(),
maps :: list(binary()),
roster_id :: binary(),
inventory_id :: binary()
}
).
-opaque type() :: #player{}.
-export_type([type/0, id/0]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-export
(
[
new/4
]
).
%%%% Accessors
-export
(
[
get_id/1,
get_username/1,
get_password/1,
get_token/1,
get_email/1,
get_last_active/1,
get_maps/1,
get_inventory_id/1,
get_roster_id/1,
set_id/2,
set_username/2,
set_password/2,
new_token/1,
set_email/2,
refresh_active/1,
set_maps/2,
set_inventory_id/2,
set_roster_id/2
]
).
-export
(
[
get_id_field/0,
get_username_field/0,
get_password_field/0,
get_token_field/0,
get_email_field/0,
get_last_active_field/0,
get_maps_field/0,
get_inventory_id_field/0,
get_roster_id_field/0
]
).
-export
(
[
password_is/2
]
).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-spec secure_value (binary(), binary()) -> binary().
secure_value (Salt, Val) ->
% TODO: Maybe it would be a good idea to include the user's IP in there as
% well. This would ensure that sessions alway use the same server (and thus,
% the same caches), and make timed cache exploits easier to prevent.
SaltedVal = erlang:iolist_to_binary([Salt, Val]),
HashedSaltedVal = crypto:hash(sha384, SaltedVal),
HashedSaltedVal.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-spec new (binary(), binary(), binary(), binary()) -> type().
new (ID, Username, Password, Email) ->
Result =
#player
{
id = ID,
username = Username,
password = {<<"">>, <<"">>},
token = <<"">>,
email = Email,
last_active = 0,
maps = [],
inventory_id = <<"0">>,
roster_id = <<"0">>
},
S0Result = set_password(Password, Result),
S1Result = new_token(S0Result),
S2Result = refresh_active(S1Result),
S2Result.
%%%% Accessors
-spec get_id (type()) -> id().
get_id (Player) -> Player#player.id.
-spec get_username (type()) -> binary().
get_username (Player) -> Player#player.username.
-spec get_password (type()) -> {binary(), binary()}.
get_password (Player) -> Player#player.password.
-spec get_token (type()) -> binary().
get_token (Player) -> Player#player.token.
-spec get_email (type()) -> binary().
get_email (Player) -> Player#player.email.
-spec get_last_active (type()) -> integer().
get_last_active (Player) -> Player#player.last_active.
-spec get_maps (type()) -> list(binary()).
get_maps (Player) -> Player#player.maps.
-spec get_roster_id (type()) -> binary().
get_roster_id (Player) -> Player#player.roster_id.
-spec get_inventory_id (type()) -> binary().
get_inventory_id (Player) -> Player#player.inventory_id.
-spec set_id (binary(), type()) -> type().
set_id (Val, Player) -> Player#player{ id = Val }.
-spec set_username (binary(), type()) -> type().
set_username (Val, Player) -> Player#player{ username = Val }.
-spec set_password (binary(), type()) -> type().
set_password (Val, Player) ->
NewSalt = crypto:strong_rand_bytes(128),
HashedSaltedVal = secure_value(NewSalt, Val),
Player#player
{
password = {NewSalt, HashedSaltedVal}
}.
-spec new_token (type()) -> type().
new_token (Player) ->
Player#player
{
token = base64:encode(crypto:strong_rand_bytes(512))
}.
-spec set_email (binary(), type()) -> type().
set_email (Val, Player) -> Player#player{ email = Val }.
-spec refresh_active (type()) -> type().
refresh_active (Player) ->
Player#player
{
last_active = erlang:system_time(second)
}.
-spec set_maps (list(binary()), type()) -> type().
set_maps (Maps, Player) -> Player#player{ maps = Maps }.
-spec set_roster_id (binary(), type()) -> type().
set_roster_id (RosterID, Player) -> Player#player{ roster_id = RosterID }.
-spec set_inventory_id (binary(), type()) -> type().
set_inventory_id (InvID, Player) -> Player#player{ inventory_id = InvID }.
-spec get_id_field () -> non_neg_integer().
get_id_field () -> #player.id.
-spec get_username_field () -> non_neg_integer().
get_username_field () -> #player.username.
-spec get_password_field () -> non_neg_integer().
get_password_field () -> #player.password.
-spec get_token_field () -> non_neg_integer().
get_token_field () -> #player.token.
-spec get_email_field () -> non_neg_integer().
get_email_field () -> #player.email.
-spec get_last_active_field () -> non_neg_integer().
get_last_active_field () -> #player.last_active.
-spec get_maps_field () -> non_neg_integer().
get_maps_field () -> #player.maps.
-spec get_roster_id_field () -> non_neg_integer().
get_roster_id_field () -> #player.roster_id.
-spec get_inventory_id_field () -> non_neg_integer().
get_inventory_id_field () -> #player.inventory_id.
-spec password_is (binary(), type()) -> boolean().
password_is (Val, Player) ->
{Salt, HashedSaltedVal} = Player#player.password,
HashedSaltedCandidate = secure_value(Salt, Val),
(HashedSaltedCandidate == HashedSaltedVal).
|
