[1770] | 1 | /* vi: set sw=4 ts=4: */
|
---|
[821] | 2 | /*
|
---|
| 3 | * static_leases.c -- Couple of functions to assist with storing and
|
---|
| 4 | * retrieving data for static leases
|
---|
| 5 | *
|
---|
| 6 | * Wade Berrier <wberrier@myrealbox.com> September 2004
|
---|
| 7 | *
|
---|
| 8 | */
|
---|
| 9 |
|
---|
[1770] | 10 | #include "common.h"
|
---|
| 11 | #include "dhcpd.h"
|
---|
[821] | 12 |
|
---|
| 13 |
|
---|
| 14 | /* Takes the address of the pointer to the static_leases linked list,
|
---|
| 15 | * Address to a 6 byte mac address
|
---|
| 16 | * Address to a 4 byte ip address */
|
---|
| 17 | int addStaticLease(struct static_lease **lease_struct, uint8_t *mac, uint32_t *ip)
|
---|
| 18 | {
|
---|
| 19 | struct static_lease *cur;
|
---|
| 20 | struct static_lease *new_static_lease;
|
---|
| 21 |
|
---|
| 22 | /* Build new node */
|
---|
| 23 | new_static_lease = xmalloc(sizeof(struct static_lease));
|
---|
| 24 | new_static_lease->mac = mac;
|
---|
| 25 | new_static_lease->ip = ip;
|
---|
| 26 | new_static_lease->next = NULL;
|
---|
| 27 |
|
---|
| 28 | /* If it's the first node to be added... */
|
---|
[1770] | 29 | if (*lease_struct == NULL) {
|
---|
[821] | 30 | *lease_struct = new_static_lease;
|
---|
[1770] | 31 | } else {
|
---|
[821] | 32 | cur = *lease_struct;
|
---|
[1770] | 33 | while (cur->next) {
|
---|
[821] | 34 | cur = cur->next;
|
---|
| 35 | }
|
---|
| 36 |
|
---|
| 37 | cur->next = new_static_lease;
|
---|
| 38 | }
|
---|
| 39 |
|
---|
| 40 | return 1;
|
---|
| 41 | }
|
---|
| 42 |
|
---|
| 43 | /* Check to see if a mac has an associated static lease */
|
---|
| 44 | uint32_t getIpByMac(struct static_lease *lease_struct, void *arg)
|
---|
| 45 | {
|
---|
| 46 | uint32_t return_ip;
|
---|
| 47 | struct static_lease *cur = lease_struct;
|
---|
| 48 | uint8_t *mac = arg;
|
---|
| 49 |
|
---|
| 50 | return_ip = 0;
|
---|
| 51 |
|
---|
[1770] | 52 | while (cur) {
|
---|
[821] | 53 | /* If the client has the correct mac */
|
---|
[1770] | 54 | if (memcmp(cur->mac, mac, 6) == 0) {
|
---|
[821] | 55 | return_ip = *(cur->ip);
|
---|
| 56 | }
|
---|
| 57 |
|
---|
| 58 | cur = cur->next;
|
---|
| 59 | }
|
---|
| 60 |
|
---|
| 61 | return return_ip;
|
---|
| 62 | }
|
---|
| 63 |
|
---|
| 64 | /* Check to see if an ip is reserved as a static ip */
|
---|
| 65 | uint32_t reservedIp(struct static_lease *lease_struct, uint32_t ip)
|
---|
| 66 | {
|
---|
| 67 | struct static_lease *cur = lease_struct;
|
---|
| 68 |
|
---|
| 69 | uint32_t return_val = 0;
|
---|
| 70 |
|
---|
[1770] | 71 | while (cur) {
|
---|
[821] | 72 | /* If the client has the correct ip */
|
---|
[1770] | 73 | if (*cur->ip == ip)
|
---|
[821] | 74 | return_val = 1;
|
---|
| 75 |
|
---|
| 76 | cur = cur->next;
|
---|
| 77 | }
|
---|
| 78 |
|
---|
| 79 | return return_val;
|
---|
| 80 | }
|
---|
| 81 |
|
---|
[1770] | 82 | #if ENABLE_FEATURE_UDHCP_DEBUG
|
---|
[821] | 83 | /* Print out static leases just to check what's going on */
|
---|
| 84 | /* Takes the address of the pointer to the static_leases linked list */
|
---|
| 85 | void printStaticLeases(struct static_lease **arg)
|
---|
| 86 | {
|
---|
| 87 | /* Get a pointer to the linked list */
|
---|
| 88 | struct static_lease *cur = *arg;
|
---|
| 89 |
|
---|
[1770] | 90 | while (cur) {
|
---|
[821] | 91 | /* printf("PrintStaticLeases: Lease mac Address: %x\n", cur->mac); */
|
---|
| 92 | printf("PrintStaticLeases: Lease mac Value: %x\n", *(cur->mac));
|
---|
| 93 | /* printf("PrintStaticLeases: Lease ip Address: %x\n", cur->ip); */
|
---|
| 94 | printf("PrintStaticLeases: Lease ip Value: %x\n", *(cur->ip));
|
---|
| 95 |
|
---|
| 96 | cur = cur->next;
|
---|
| 97 | }
|
---|
| 98 | }
|
---|
| 99 | #endif
|
---|