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udhcp: rename fields in struct dhcpOfferedAddr

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2009-06-16 10:23:01 +02:00
parent 47f2d7ef7d
commit 1d924f59b1
6 changed files with 32 additions and 31 deletions
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25
networking/udhcp/dhcpd.c
View File

@ -170,8 +170,8 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
if (static_lease_ip) {
bb_info_msg("Found static lease: %x", static_lease_ip);
memcpy(&static_lease.chaddr, &packet.chaddr, 16);
static_lease.yiaddr = static_lease_ip;
memcpy(&static_lease.lease_mac16, &packet.chaddr, 16);
static_lease.lease_nip = static_lease_ip;
static_lease.expires = 0;
lease = &static_lease;
@ -204,19 +204,19 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
DEBUG("server_id = %08x", ntohl(server_id_aligned));
if (server_id_aligned == server_config.server
&& requested
&& requested_aligned == lease->yiaddr
&& requested_aligned == lease->lease_nip
) {
send_ACK(&packet, lease->yiaddr);
send_ACK(&packet, lease->lease_nip);
}
} else if (requested) {
/* INIT-REBOOT State */
if (lease->yiaddr == requested_aligned)
send_ACK(&packet, lease->yiaddr);
if (lease->lease_nip == requested_aligned)
send_ACK(&packet, lease->lease_nip);
else
send_NAK(&packet);
} else if (lease->yiaddr == packet.ciaddr) {
} else if (lease->lease_nip == packet.ciaddr) {
/* RENEWING or REBINDING State */
send_ACK(&packet, lease->yiaddr);
send_ACK(&packet, lease->lease_nip);
} else { /* don't know what to do!!!! */
send_NAK(&packet);
}
@ -231,10 +231,11 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
if (lease) {
if (lease_expired(lease)) {
/* probably best if we drop this lease */
memset(lease->chaddr, 0, 16);
/* make some contention for this address */
} else
memset(lease->lease_mac16, 0, 16);
} else {
/* make some contention for this address */
send_NAK(&packet);
}
} else {
uint32_t r = ntohl(requested_aligned);
if (r < server_config.start_ip
@ -252,7 +253,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
case DHCPDECLINE:
DEBUG("Received DECLINE");
if (lease) {
memset(lease->chaddr, 0, 16);
memset(lease->lease_mac16, 0, 16);
lease->expires = time(NULL) + server_config.decline_time;
}
break;

6
networking/udhcp/dhcpd.h
View File

@ -78,9 +78,9 @@ typedef uint32_t leasetime_t;
typedef int32_t signed_leasetime_t;
struct dhcpOfferedAddr {
uint8_t chaddr[16];
/* In network order */
uint32_t yiaddr;
uint8_t lease_mac16[16];
/* "nip": IP in network order */
uint32_t lease_nip;
/* Unix time when lease expires, regardless of value of
* server_config.remaining. Kept in memory in host order.
* When written to file, converted to network order

4
networking/udhcp/dumpleases.c
View File

@ -61,10 +61,10 @@ int dumpleases_main(int argc UNUSED_PARAM, char **argv)
while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) {
const char *fmt = ":%02x" + 1;
for (i = 0; i < 6; i++) {
printf(fmt, lease.chaddr[i]);
printf(fmt, lease.lease_mac16[i]);
fmt = ":%02x";
}
addr.s_addr = lease.yiaddr;
addr.s_addr = lease.lease_nip;
/* actually, 15+1 and 19+1, +1 is a space between columns */
/* lease.hostname is char[20] and is always NUL terminated */
printf(" %-16s%-20s", inet_ntoa(addr), lease.hostname);

6
networking/udhcp/files.c
View File

@ -360,7 +360,7 @@ void FAST_FUNC write_leases(void)
for (i = 0; i < server_config.max_leases; i++) {
leasetime_t tmp_time;
if (leases[i].yiaddr == 0)
if (leases[i].lease_nip == 0)
continue;
/* Screw with the time in the struct, for easier writing */
@ -413,14 +413,14 @@ void FAST_FUNC read_leases(const char *file)
IF_UDHCP_DEBUG(i = 0;)
while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) {
/* ADDME: what if it matches some static lease? */
uint32_t y = ntohl(lease.yiaddr);
uint32_t y = ntohl(lease.lease_nip);
if (y >= server_config.start_ip && y <= server_config.end_ip) {
signed_leasetime_t expires = ntohl(lease.expires) - (signed_leasetime_t)time_passed;
if (expires <= 0)
continue;
/* NB: add_lease takes "relative time", IOW,
* lease duration, not lease deadline. */
if (!(add_lease(lease.chaddr, lease.yiaddr, expires, lease.hostname))) {
if (!(add_lease(lease.lease_mac16, lease.lease_nip, expires, lease.hostname))) {
bb_error_msg("too many leases while loading %s", file);
break;
}

20
networking/udhcp/leases.c
View File

@ -38,10 +38,10 @@ static void clear_lease(const uint8_t *chaddr, uint32_t yiaddr)
continue;
for (i = 0; i < server_config.max_leases; i++) {
if ((j != 16 && memcmp(leases[i].chaddr, chaddr, 16) == 0)
|| (yiaddr && leases[i].yiaddr == yiaddr)
if ((j != 16 && memcmp(leases[i].lease_mac16, chaddr, 16) == 0)
|| (yiaddr && leases[i].lease_nip == yiaddr)
) {
memset(&(leases[i]), 0, sizeof(leases[i]));
memset(&leases[i], 0, sizeof(leases[i]));
}
}
}
@ -75,8 +75,8 @@ struct dhcpOfferedAddr* FAST_FUNC add_lease(
hostname++;
}
}
memcpy(oldest->chaddr, chaddr, 16);
oldest->yiaddr = yiaddr;
memcpy(oldest->lease_mac16, chaddr, 16);
oldest->lease_nip = yiaddr;
oldest->expires = time(NULL) + leasetime;
}
@ -97,7 +97,7 @@ struct dhcpOfferedAddr* FAST_FUNC find_lease_by_chaddr(const uint8_t *chaddr)
unsigned i;
for (i = 0; i < server_config.max_leases; i++)
if (!memcmp(leases[i].chaddr, chaddr, 16))
if (!memcmp(leases[i].lease_mac16, chaddr, 16))
return &(leases[i]);
return NULL;
@ -110,8 +110,8 @@ struct dhcpOfferedAddr* FAST_FUNC find_lease_by_yiaddr(uint32_t yiaddr)
unsigned i;
for (i = 0; i < server_config.max_leases; i++)
if (leases[i].yiaddr == yiaddr)
return &(leases[i]);
if (leases[i].lease_nip == yiaddr)
return &leases[i];
return NULL;
}
@ -174,9 +174,9 @@ uint32_t FAST_FUNC find_free_or_expired_address(const uint8_t *chaddr)
}
if (oldest_lease && lease_expired(oldest_lease)
&& nobody_responds_to_arp(oldest_lease->yiaddr, chaddr)
&& nobody_responds_to_arp(oldest_lease->lease_nip, chaddr)
) {
return oldest_lease->yiaddr;
return oldest_lease->lease_nip;
}
return 0;

2
networking/udhcp/serverpacket.c
View File

@ -132,7 +132,7 @@ int FAST_FUNC send_offer(struct dhcpMessage *oldpacket)
signed_leasetime_t tmp = lease->expires - time(NULL);
if (tmp >= 0)
lease_time_aligned = tmp;
packet.yiaddr = lease->yiaddr;
packet.yiaddr = lease->lease_nip;
}
/* Or the client has requested an IP */
else if ((req = get_option(oldpacket, DHCP_REQUESTED_IP)) != NULL