local cjson = require "cjson"

local session = require"resty.session".open()
if (session == nil or session.data.identify == nil) then
    local chunk, eof = ngx.arg[1], ngx.arg[2];
    local post_list = cjson.decode(chunk);

    for i, v in pairs(private_folder) do
        for dir, value in pairs(post_list) do
            if (dir == v) then
                post_list[dir] = nil;
            end
        end
    end
    ngx.arg[1] = cjson.encode(post_list);
    ngx.arg[2] = true
else

end