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udhcpd: fix bug: s/memcmp() != 0/memcmp() == 0/

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(by David Updegraff <dave@cray.com>)
This commit is contained in:
Denis Vlasenko 2007-08-09 08:04:05 +00:00
parent e5dbba22af
commit 22a80d1e7d
1 changed files with 10 additions and 11 deletions
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21
networking/udhcp/leases.c
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@ -12,10 +12,10 @@
static struct dhcpOfferedAddr *oldest_expired_lease(void)
{
struct dhcpOfferedAddr *oldest = NULL;
// TODO: use monotonic_sec()
unsigned long oldest_lease = time(0);
unsigned i;
for (i = 0; i < server_config.max_leases; i++)
if (oldest_lease > leases[i].expires) {
oldest_lease = leases[i].expires;
@ -30,13 +30,14 @@ static void clear_lease(const uint8_t *chaddr, uint32_t yiaddr)
{
unsigned i, j;
for (j = 0; j < 16 && !chaddr[j]; j++);
for (j = 0; j < 16 && !chaddr[j]; j++)
continue;
for (i = 0; i < server_config.max_leases; i++)
if ((j != 16 && memcmp(leases[i].chaddr, chaddr, 16) != 0)
if ((j != 16 && memcmp(leases[i].chaddr, chaddr, 16) == 0)
|| (yiaddr && leases[i].yiaddr == yiaddr)
) {
memset(&(leases[i]), 0, sizeof(struct dhcpOfferedAddr));
memset(&(leases[i]), 0, sizeof(leases[i]));
}
}
@ -122,20 +123,18 @@ uint32_t find_address(int check_expired)
struct dhcpOfferedAddr *lease = NULL;
addr = server_config.start_ip; /* addr is in host order here */
for (;addr <= server_config.end_ip; addr++) {
for (; addr <= server_config.end_ip; addr++) {
/* ie, 192.168.55.0 */
if (!(addr & 0xFF)) continue;
if (!(addr & 0xFF))
continue;
/* ie, 192.168.55.255 */
if ((addr & 0xFF) == 0xFF) continue;
if ((addr & 0xFF) == 0xFF)
continue;
/* Only do if it isn't assigned as a static lease */
ret = htonl(addr);
if (!reservedIp(server_config.static_leases, ret)) {
/* lease is not taken */
lease = find_lease_by_yiaddr(ret);
/* no lease or it expired and we are checking for expired leases */
if ((!lease || (check_expired && lease_expired(lease)))
&& nobody_responds_to_arp(ret) /* it isn't used on the network */