Create a list of elog cookies, and store only these as parameters. Examplef:

int process_http_request(const char *request, int i_conn)

{
...
const char *cookie_list[] = { "upwd", "unm", "elmode", "urem", "wpwd", "apwd", "uname", NULL };
...
...
...
         /* store cookie as parameter */
         for(i=0; cookie_list[i]; i++) {
            if(strcmp(cookie_list[i], str) == 0) {
               setparam(str, cookie);
               break;
            }
         }

...