/* 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