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60f067b4 JS |
1 | #pragma once |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright (C) 2013 Intel Corporation. All rights reserved. | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
60f067b4 | 22 | #include <netinet/ip.h> |
4c89c718 | 23 | #include <netinet/udp.h> |
60f067b4 JS |
24 | #include <stdint.h> |
25 | ||
26 | #include "macro.h" | |
27 | #include "sparse-endian.h" | |
28 | ||
29 | struct DHCPMessage { | |
30 | uint8_t op; | |
31 | uint8_t htype; | |
32 | uint8_t hlen; | |
33 | uint8_t hops; | |
34 | be32_t xid; | |
35 | be16_t secs; | |
36 | be16_t flags; | |
37 | be32_t ciaddr; | |
38 | be32_t yiaddr; | |
39 | be32_t siaddr; | |
40 | be32_t giaddr; | |
41 | uint8_t chaddr[16]; | |
42 | uint8_t sname[64]; | |
43 | uint8_t file[128]; | |
44 | be32_t magic; | |
45 | uint8_t options[0]; | |
46 | } _packed_; | |
47 | ||
48 | typedef struct DHCPMessage DHCPMessage; | |
49 | ||
50 | struct DHCPPacket { | |
51 | struct iphdr ip; | |
52 | struct udphdr udp; | |
53 | DHCPMessage dhcp; | |
54 | } _packed_; | |
55 | ||
56 | typedef struct DHCPPacket DHCPPacket; | |
57 | ||
58 | #define DHCP_IP_SIZE (int32_t)(sizeof(struct iphdr)) | |
59 | #define DHCP_IP_UDP_SIZE (int32_t)(sizeof(struct udphdr) + DHCP_IP_SIZE) | |
60 | #define DHCP_MESSAGE_SIZE (int32_t)(sizeof(DHCPMessage)) | |
5eef597e MP |
61 | #define DHCP_DEFAULT_MIN_SIZE 576 /* the minimum internet hosts must be able to receive */ |
62 | #define DHCP_MIN_OPTIONS_SIZE DHCP_DEFAULT_MIN_SIZE - DHCP_IP_UDP_SIZE - DHCP_MESSAGE_SIZE | |
60f067b4 JS |
63 | #define DHCP_MAGIC_COOKIE (uint32_t)(0x63825363) |
64 | ||
65 | enum { | |
66 | DHCP_PORT_SERVER = 67, | |
67 | DHCP_PORT_CLIENT = 68, | |
68 | }; | |
69 | ||
70 | enum DHCPState { | |
71 | DHCP_STATE_INIT = 0, | |
72 | DHCP_STATE_SELECTING = 1, | |
73 | DHCP_STATE_INIT_REBOOT = 2, | |
74 | DHCP_STATE_REBOOTING = 3, | |
75 | DHCP_STATE_REQUESTING = 4, | |
76 | DHCP_STATE_BOUND = 5, | |
77 | DHCP_STATE_RENEWING = 6, | |
78 | DHCP_STATE_REBINDING = 7, | |
79 | DHCP_STATE_STOPPED = 8, | |
80 | }; | |
81 | ||
82 | typedef enum DHCPState DHCPState; | |
83 | ||
84 | enum { | |
85 | BOOTREQUEST = 1, | |
86 | BOOTREPLY = 2, | |
87 | }; | |
88 | ||
89 | enum { | |
90 | DHCP_DISCOVER = 1, | |
91 | DHCP_OFFER = 2, | |
92 | DHCP_REQUEST = 3, | |
93 | DHCP_DECLINE = 4, | |
94 | DHCP_ACK = 5, | |
95 | DHCP_NAK = 6, | |
96 | DHCP_RELEASE = 7, | |
5eef597e MP |
97 | DHCP_INFORM = 8, |
98 | DHCP_FORCERENEW = 9, | |
60f067b4 JS |
99 | }; |
100 | ||
101 | enum { | |
102 | DHCP_OVERLOAD_FILE = 1, | |
103 | DHCP_OVERLOAD_SNAME = 2, | |
104 | }; | |
105 | ||
4c89c718 MP |
106 | #define DHCP_MAX_FQDN_LENGTH 255 |
107 | ||
60f067b4 | 108 | enum { |
4c89c718 MP |
109 | DHCP_FQDN_FLAG_S = (1 << 0), |
110 | DHCP_FQDN_FLAG_O = (1 << 1), | |
111 | DHCP_FQDN_FLAG_E = (1 << 2), | |
112 | DHCP_FQDN_FLAG_N = (1 << 3), | |
60f067b4 | 113 | }; |