由于更改了“内部”版附件链接判断机制，由 PERM_DEFAULT 可读改为判断 guest 可读
原 check_read_perm 函数对传入空指针判断不合理，可能导致掉线等问题

请使用 KBS 代码且拥有自己的站点定义文件的站点的维护人员注意
如果需要跟进代码，请参照最新的 site/fb2k-v2.c check_read_perm() 函数进行相应修改
如下红色部分

int check_read_perm(const struct userec *user, const struct boardheader *board)
{
    if (board == NULL)
        return 0;
    if (user==NULL) {
        if (board->title_level!=0) return 0;
    } else
        if (!HAS_PERM(user, PERM_OBOARDS)&&board->title_level
                &&(board->title_level!=user->title))
            return 0;

    if (board->level & PERM_POSTMASK || (!user && !board->level) || (user && HAS
_PERM(user, board->level)) || (board->level & PERM_NOZAP)) {
        if (board->flag & BOARD_CLUB_READ) {    /*俱乐部*/
            if (user && HAS_PERM(user,PERM_OBOARDS)&&HAS_PERM(user, PERM_SYSOP))
                return 1;
            if (board->clubnum <= 0 || board->clubnum > MAXCLUB)
                return 0;
            if (user && user->club_read_rights[(board->clubnum - 1) >> 5] & (1 << ((board->clubnum - 1) & 0x1f)))
                return 1;
            else
                return 0;
        }
        return 1;
    }
    return 0;
}
--
FROM 221.222.170.*