"Robert P. J. Day" | 63fc1a9 | 2006-07-02 19:47:05 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 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 | * |
Denis Vlasenko | db12d1d | 2008-12-07 00:52:58 +0000 | [diff] [blame] | 8 | * Licensed under GPLv2, see file LICENSE in this tarball for details. |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 9 | */ |
| 10 | |
Denis Vlasenko | 5a3395b | 2006-11-18 19:51:32 +0000 | [diff] [blame] | 11 | #include "common.h" |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 12 | #include "dhcpd.h" |
| 13 | |
Denis Vlasenko | 5a3395b | 2006-11-18 19:51:32 +0000 | [diff] [blame] | 14 | |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 15 | /* Takes the address of the pointer to the static_leases linked list, |
| 16 | * Address to a 6 byte mac address |
| 17 | * Address to a 4 byte ip address */ |
Denis Vlasenko | 0416e3d | 2009-01-01 17:52:09 +0000 | [diff] [blame] | 18 | void FAST_FUNC addStaticLease(struct static_lease **lease_struct, uint8_t *mac, uint32_t ip) |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 19 | { |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 20 | struct static_lease *new_static_lease; |
| 21 | |
| 22 | /* Build new node */ |
Denis Vlasenko | 0416e3d | 2009-01-01 17:52:09 +0000 | [diff] [blame] | 23 | new_static_lease = xzalloc(sizeof(struct static_lease)); |
| 24 | memcpy(new_static_lease->mac, mac, 6); |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 25 | new_static_lease->ip = ip; |
Denis Vlasenko | 0416e3d | 2009-01-01 17:52:09 +0000 | [diff] [blame] | 26 | /*new_static_lease->next = NULL;*/ |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 27 | |
| 28 | /* If it's the first node to be added... */ |
Denis Vlasenko | 5a3395b | 2006-11-18 19:51:32 +0000 | [diff] [blame] | 29 | if (*lease_struct == NULL) { |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 30 | *lease_struct = new_static_lease; |
Denis Vlasenko | 5a3395b | 2006-11-18 19:51:32 +0000 | [diff] [blame] | 31 | } else { |
Denis Vlasenko | 0416e3d | 2009-01-01 17:52:09 +0000 | [diff] [blame] | 32 | struct static_lease *cur = *lease_struct; |
| 33 | while (cur->next) |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 34 | cur = cur->next; |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 35 | cur->next = new_static_lease; |
| 36 | } |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 37 | } |
| 38 | |
| 39 | /* Check to see if a mac has an associated static lease */ |
Denis Vlasenko | 0416e3d | 2009-01-01 17:52:09 +0000 | [diff] [blame] | 40 | uint32_t FAST_FUNC getIpByMac(struct static_lease *lease_struct, void *mac) |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 41 | { |
Denis Vlasenko | 0416e3d | 2009-01-01 17:52:09 +0000 | [diff] [blame] | 42 | while (lease_struct) { |
| 43 | if (memcmp(lease_struct->mac, mac, 6) == 0) |
| 44 | return lease_struct->ip; |
| 45 | lease_struct = lease_struct->next; |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 46 | } |
| 47 | |
Denis Vlasenko | 0416e3d | 2009-01-01 17:52:09 +0000 | [diff] [blame] | 48 | return 0; |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | /* Check to see if an ip is reserved as a static ip */ |
Denis Vlasenko | 0416e3d | 2009-01-01 17:52:09 +0000 | [diff] [blame] | 52 | int FAST_FUNC reservedIp(struct static_lease *lease_struct, uint32_t ip) |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 53 | { |
Denis Vlasenko | 0416e3d | 2009-01-01 17:52:09 +0000 | [diff] [blame] | 54 | while (lease_struct) { |
| 55 | if (lease_struct->ip == ip) |
| 56 | return 1; |
| 57 | lease_struct = lease_struct->next; |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 58 | } |
| 59 | |
Denis Vlasenko | 0416e3d | 2009-01-01 17:52:09 +0000 | [diff] [blame] | 60 | return 0; |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 61 | } |
| 62 | |
Denis Vlasenko | 35a064b | 2008-11-06 00:49:59 +0000 | [diff] [blame] | 63 | #if ENABLE_UDHCP_DEBUG |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 64 | /* Print out static leases just to check what's going on */ |
| 65 | /* Takes the address of the pointer to the static_leases linked list */ |
Denis Vlasenko | f1980f6 | 2008-09-26 09:34:59 +0000 | [diff] [blame] | 66 | void FAST_FUNC printStaticLeases(struct static_lease **arg) |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 67 | { |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 68 | struct static_lease *cur = *arg; |
| 69 | |
Denis Vlasenko | 5a3395b | 2006-11-18 19:51:32 +0000 | [diff] [blame] | 70 | while (cur) { |
Denis Vlasenko | 0416e3d | 2009-01-01 17:52:09 +0000 | [diff] [blame] | 71 | printf("PrintStaticLeases: Lease mac Value: %02x:%02x:%02x:%02x:%02x:%02x\n", |
| 72 | cur->mac[0], cur->mac[1], cur->mac[2], |
| 73 | cur->mac[3], cur->mac[4], cur->mac[5] |
| 74 | ); |
| 75 | printf("PrintStaticLeases: Lease ip Value: %x\n", cur->ip); |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 76 | cur = cur->next; |
| 77 | } |
Mike Frysinger | 7031f62 | 2006-05-08 03:20:50 +0000 | [diff] [blame] | 78 | } |
| 79 | #endif |