My own hackish solution, based on fr2632‘s function, which instead “refreshes” the cookie with $seconds time each time someone is on a specific page (probably the password-protected one), and should live through updates:
In functions.php :
function post_pw_sess_refresh($seconds = 900) {
if ( isset( $_COOKIE['wp-postpass_' . COOKIEHASH] ) ){
setcookie('wp-postpass_' . COOKIEHASH, $_COOKIE['wp-postpass_' . COOKIEHASH], time() + $seconds, COOKIEPATH);
}
}
In header.php : (With a $post->ID of your choice, of course)
<?php if ($post->ID == 10){ post_pw_sess_refresh(900); } ?>
So you kill the huge 10 day default lifetime of the original cookie, and as a bonus can keep it alive as long as you hop around in pages that call the function.
