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sprocket

0.1.3
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A library for building live views and real-time server components in Gleam

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sprocket src sprocket@internal@csrf.erl
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src/sprocket@internal@csrf.erl 

-module(sprocket@internal@csrf).

-compile([no_auto_import, nowarn_unused_vars]).



-export([validate/2, generate/0]).



-spec validate(binary(), binary()) -> {ok, nil} | {error, binary()}.

validate(Token1, Token2) ->

    case Token1 =:= Token2 of

        true ->

            {ok, nil};



        false ->

            {error, <<"Invalid CSRF token"/utf8>>}

    end.



-spec process_bytes_r(bitstring()) -> binary().

process_bytes_r(B) ->

    case B of

        <<>> ->

            <<""/utf8>>;



        <<A:8, Rest/bitstring>> ->

            <<(begin

                    _pipe = gleam@int:to_base16(A),

                    gleam@string:lowercase(_pipe)

                end)/binary,

                (process_bytes_r(Rest))/binary>>

    end.



-spec generate() -> binary().

generate() ->

    _pipe = gleam@crypto:strong_random_bytes(26),

    process_bytes_r(_pipe).