/* vi: set sw=4 ts=4: */
/*
- * static_leases.c -- Couple of functions to assist with storing and
- * retrieving data for static leases
+ * Storing and retrieving data for static leases
*
* Wade Berrier <wberrier@myrealbox.com> September 2004
*
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
-
#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 */
-int FAST_FUNC addStaticLease(struct static_lease **lease_struct, uint8_t *mac, uint32_t *ip)
+ * address to a 6 byte mac address,
+ * 4 byte IP address */
+void FAST_FUNC add_static_lease(struct static_lease **st_lease_pp,
+ uint8_t *mac,
+ uint32_t nip)
{
- struct static_lease *cur;
- struct static_lease *new_static_lease;
-
- /* Build new node */
- new_static_lease = xmalloc(sizeof(struct static_lease));
- new_static_lease->mac = mac;
- 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 {
- cur = *lease_struct;
- while (cur->next) {
- cur = cur->next;
- }
+ struct static_lease *st_lease;
- cur->next = new_static_lease;
+ /* Find the tail of the list */
+ while ((st_lease = *st_lease_pp) != NULL) {
+ st_lease_pp = &st_lease->next;
}
- return 1;
+ /* Add new node */
+ *st_lease_pp = st_lease = xzalloc(sizeof(*st_lease));
+ memcpy(st_lease->mac, mac, 6);
+ st_lease->nip = nip;
+ /*st_lease->next = NULL;*/
}
-/* Check to see if a mac has an associated static lease */
-uint32_t FAST_FUNC getIpByMac(struct static_lease *lease_struct, void *arg)
+/* Find static lease IP by mac */
+uint32_t FAST_FUNC get_static_nip_by_mac(struct static_lease *st_lease, void *mac)
{
- uint32_t return_ip;
- struct static_lease *cur = lease_struct;
- uint8_t *mac = arg;
-
- return_ip = 0;
-
- while (cur) {
- /* If the client has the correct mac */
- if (memcmp(cur->mac, mac, 6) == 0) {
- return_ip = *(cur->ip);
- }
-
- cur = cur->next;
+ while (st_lease) {
+ if (memcmp(st_lease->mac, mac, 6) == 0)
+ return st_lease->nip;
+ st_lease = st_lease->next;
}
- return return_ip;
+ return 0;
}
-/* Check to see if an ip is reserved as a static ip */
-uint32_t FAST_FUNC reservedIp(struct static_lease *lease_struct, uint32_t ip)
+/* Check to see if an IP is reserved as a static IP */
+int FAST_FUNC is_nip_reserved(struct static_lease *st_lease, uint32_t nip)
{
- struct static_lease *cur = lease_struct;
-
- uint32_t return_val = 0;
-
- while (cur) {
- /* If the client has the correct ip */
- if (*cur->ip == ip)
- return_val = 1;
-
- cur = cur->next;
+ while (st_lease) {
+ if (st_lease->nip == nip)
+ return 1;
+ st_lease = st_lease->next;
}
- return return_val;
+ return 0;
}
-#if ENABLE_FEATURE_UDHCP_DEBUG
+#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 2
/* 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)
+void FAST_FUNC log_static_leases(struct static_lease **st_lease_pp)
{
- /* Get a pointer to the linked list */
- struct static_lease *cur = *arg;
+ struct static_lease *cur;
- while (cur) {
- /* printf("PrintStaticLeases: Lease mac Address: %x\n", cur->mac); */
- printf("PrintStaticLeases: Lease mac Value: %x\n", *(cur->mac));
- /* printf("PrintStaticLeases: Lease ip Address: %x\n", cur->ip); */
- printf("PrintStaticLeases: Lease ip Value: %x\n", *(cur->ip));
+ if (dhcp_verbose < 2)
+ return;
+ cur = *st_lease_pp;
+ while (cur) {
+ bb_info_msg("static lease: mac:%02x:%02x:%02x:%02x:%02x:%02x nip:%x",
+ cur->mac[0], cur->mac[1], cur->mac[2],
+ cur->mac[3], cur->mac[4], cur->mac[5],
+ cur->nip
+ );
cur = cur->next;
}
}