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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright (C) 2013 Intel Corporation. All rights reserved. | |
7 | Copyright (C) 2014 Tom Gundersen | |
8 | ||
9 | systemd is free software; you can redistribute it and/or modify it | |
10 | under the terms of the GNU Lesser General Public License as published by | |
11 | the Free Software Foundation; either version 2.1 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | systemd is distributed in the hope that it will be useful, but | |
15 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | Lesser General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU Lesser General Public License | |
20 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
21 | ***/ | |
22 | ||
23 | #include "sd-event.h" | |
24 | #include "sd-dhcp-server.h" | |
25 | ||
26 | #include "hashmap.h" | |
27 | #include "refcnt.h" | |
28 | #include "util.h" | |
29 | #include "log.h" | |
30 | ||
31 | #include "dhcp-internal.h" | |
32 | ||
33 | typedef struct DHCPClientId { | |
34 | size_t length; | |
35 | uint8_t *data; | |
36 | } DHCPClientId; | |
37 | ||
38 | typedef struct DHCPLease { | |
39 | DHCPClientId client_id; | |
40 | ||
41 | be32_t address; | |
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42 | be32_t gateway; |
43 | uint8_t chaddr[16]; | |
e842803a MB |
44 | usec_t expiration; |
45 | } DHCPLease; | |
46 | ||
47 | struct sd_dhcp_server { | |
48 | RefCount n_ref; | |
49 | ||
50 | sd_event *event; | |
51 | int event_priority; | |
52 | sd_event_source *receive_message; | |
53 | int fd; | |
54 | int fd_raw; | |
55 | ||
56 | int index; | |
57 | be32_t address; | |
5eef597e | 58 | be32_t netmask; |
e842803a MB |
59 | be32_t pool_start; |
60 | size_t pool_size; | |
61 | size_t next_offer; | |
62 | ||
63 | Hashmap *leases_by_client_id; | |
64 | DHCPLease **bound_leases; | |
65 | }; | |
66 | ||
67 | typedef struct DHCPRequest { | |
68 | /* received message */ | |
69 | DHCPMessage *message; | |
70 | ||
71 | /* options */ | |
72 | DHCPClientId client_id; | |
73 | size_t max_optlen; | |
74 | be32_t server_id; | |
75 | be32_t requested_ip; | |
76 | int lifetime; | |
77 | } DHCPRequest; | |
78 | ||
79 | DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp_server*, sd_dhcp_server_unref); | |
80 | #define _cleanup_dhcp_server_unref_ _cleanup_(sd_dhcp_server_unrefp) | |
81 | ||
f47781d8 | 82 | #define log_dhcp_server(client, fmt, ...) log_internal(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, "DHCP SERVER: " fmt, ##__VA_ARGS__) |
e842803a MB |
83 | |
84 | int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message, | |
85 | size_t length); | |
86 | int dhcp_server_send_packet(sd_dhcp_server *server, | |
87 | DHCPRequest *req, DHCPPacket *packet, | |
88 | int type, size_t optoffset); | |
89 | ||
90 | unsigned long client_id_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]); | |
91 | int client_id_compare_func(const void *_a, const void *_b); |