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/* vi: set sw=4 ts=4: */
/*
* static_leases.c -- Couple of functions to assist with storing and
* retrieving data for static leases
*
* Wade Berrier <wberrier@myrealbox.com> September 2004
*
* Licensed under GPLv2, see file LICENSE in this tarball for details.
*/
#include "common.h"
#include "dhcpd.h"
/* Takes the address of the pointer to the static_leases linked list,
* Address to a 6 byte mac address
* Address to a 4 byte ip address */
void FAST_FUNC addStaticLease(struct static_lease **lease_struct, uint8_t *mac, uint32_t ip)
{
struct static_lease *new_static_lease;
/* Build new node */
new_static_lease = xzalloc(sizeof(struct static_lease));
memcpy(new_static_lease->mac, mac, 6);
new_static_lease->ip = ip;
/*new_static_lease->next = NULL;*/
/* If it's the first node to be added... */
if (*lease_struct == NULL) {
*lease_struct = new_static_lease;
} else {
struct static_lease *cur = *lease_struct;
while (cur->next)
cur = cur->next;
cur->next = new_static_lease;
}
}
/* Check to see if a mac has an associated static lease */
uint32_t FAST_FUNC getIpByMac(struct static_lease *lease_struct, void *mac)
{
while (lease_struct) {
if (memcmp(lease_struct->mac, mac, 6) == 0)
return lease_struct->ip;
lease_struct = lease_struct->next;
}
return 0;
}
/* Check to see if an ip is reserved as a static ip */
int FAST_FUNC reservedIp(struct static_lease *lease_struct, uint32_t ip)
{
while (lease_struct) {
if (lease_struct->ip == ip)
return 1;
lease_struct = lease_struct->next;
}
return 0;
}
#if ENABLE_UDHCP_DEBUG
/* Print out static leases just to check what's going on */
/* Takes the address of the pointer to the static_leases linked list */
void FAST_FUNC printStaticLeases(struct static_lease **arg)
{
struct static_lease *cur = *arg;
while (cur) {
printf("PrintStaticLeases: Lease mac Value: %02x:%02x:%02x:%02x:%02x:%02x\n",
cur->mac[0], cur->mac[1], cur->mac[2],
cur->mac[3], cur->mac[4], cur->mac[5]
);
printf("PrintStaticLeases: Lease ip Value: %x\n", cur->ip);
cur = cur->next;
}
}
#endif
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