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- /* vi: set sw=4 ts=4: */
- /*
- * 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,
- * 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 *st_lease;
- /* Find the tail of the list */
- while ((st_lease = *st_lease_pp) != NULL) {
- st_lease_pp = &st_lease->next;
- }
- /* 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;*/
- }
- /* Find static lease IP by mac */
- uint32_t FAST_FUNC get_static_nip_by_mac(struct static_lease *st_lease, void *mac)
- {
- while (st_lease) {
- if (memcmp(st_lease->mac, mac, 6) == 0)
- return st_lease->nip;
- st_lease = st_lease->next;
- }
- return 0;
- }
- /* 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)
- {
- while (st_lease) {
- if (st_lease->nip == nip)
- return 1;
- st_lease = st_lease->next;
- }
- return 0;
- }
- #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 log_static_leases(struct static_lease **st_lease_pp)
- {
- struct static_lease *cur;
- if (dhcp_verbose < 2)
- return;
- cur = *st_lease_pp;
- while (cur) {
- bb_error_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;
- }
- }
- #endif
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