From:	dlibenzi AT maticad DOT it (Davide Libenzi)
Subject:	RedHat optimized pricing algorithm bug ( for clients only ) ...
11 Sep 1998 02:45:32 -0700 :
Message-ID:	<001c01bddd6c$e14e1840$1f0104c0.cygnus.cygwin32.developers@pcdavide>
Mime-Version:	1.0
To:	<egcs AT cygnus DOT com>, "gnu-win32" <gnu-win32 AT cygnus DOT com>,
	"bug-hurd" <bug-hurd AT gnu DOT org>,
	"cygwin32-developers" <cygwin32-developers AT cygnus DOT com>

I've found a bug in RedHat billing algorithm :


#define MAX_TIMES    8
#define CLIENT_FOOL_CNT    2

double    client_billing (int client_id, char * card_no, double price)
{

    int ii,
        times = MAX_TIMES * (double) rand() / (double) RAND_MAX;
    double total = 0.0;

    for (ii = 0; ii < times; ii++)
    {
        charge_credit_card(card_no, price);

        if (client_angry(client_id))
            break;

        total += price;
    }

    if (ii > CLIENT_FOOL_CNT)
        push_client_in_fools(client_id);

    return (total);

}

BE ADVISED !!!


This is an example of how to aid the Linux movement.

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