From 4aca87515a5083ae0e31ce3177189fd43b6d05ac Mon Sep 17 00:00:00 2001 From: Andreas Baumann Date: Sat, 3 Jan 2015 13:58:15 +0100 Subject: patch to Vanilla Tomato 1.28 --- .../busybox/networking/udhcp/static_leases.c | 79 ++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 release/src/router/busybox/networking/udhcp/static_leases.c (limited to 'release/src/router/busybox/networking/udhcp/static_leases.c') diff --git a/release/src/router/busybox/networking/udhcp/static_leases.c b/release/src/router/busybox/networking/udhcp/static_leases.c new file mode 100644 index 00000000..1e77a58f --- /dev/null +++ b/release/src/router/busybox/networking/udhcp/static_leases.c @@ -0,0 +1,79 @@ +/* vi: set sw=4 ts=4: */ +/* + * static_leases.c -- Couple of functions to assist with storing and + * retrieving data for static leases + * + * Wade Berrier 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 -- cgit v1.2.3-54-g00ecf