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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | #pragma once | |
4 | ||
5 | /*** | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright (C) 2013 Intel Corporation. All rights reserved. | |
9 | Copyright (C) 2014 Tom Gundersen | |
10 | ||
11 | systemd is free software; you can redistribute it and/or modify it | |
12 | under the terms of the GNU Lesser General Public License as published by | |
13 | the Free Software Foundation; either version 2.1 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | systemd is distributed in the hope that it will be useful, but | |
17 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | Lesser General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU Lesser General Public License | |
22 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
23 | ***/ | |
24 | ||
25 | #include <stdint.h> | |
26 | #include <linux/if_packet.h> | |
5eef597e MP |
27 | #include <net/if_arp.h> |
28 | #include <net/ethernet.h> | |
60f067b4 JS |
29 | |
30 | #include "socket-util.h" | |
31 | ||
e842803a | 32 | #include "sd-dhcp-client.h" |
60f067b4 JS |
33 | #include "dhcp-protocol.h" |
34 | ||
5eef597e MP |
35 | int dhcp_network_bind_raw_socket(int index, union sockaddr_union *link, |
36 | uint32_t xid, const uint8_t *mac_addr, | |
37 | size_t mac_addr_len, uint16_t arp_type); | |
60f067b4 JS |
38 | int dhcp_network_bind_udp_socket(be32_t address, uint16_t port); |
39 | int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link, | |
40 | const void *packet, size_t len); | |
41 | int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port, | |
42 | const void *packet, size_t len); | |
43 | ||
44 | int dhcp_option_append(DHCPMessage *message, size_t size, size_t *offset, uint8_t overload, | |
45 | uint8_t code, size_t optlen, const void *optval); | |
46 | ||
47 | typedef int (*dhcp_option_cb_t)(uint8_t code, uint8_t len, | |
48 | const uint8_t *option, void *user_data); | |
49 | ||
50 | int dhcp_option_parse(DHCPMessage *message, size_t len, | |
51 | dhcp_option_cb_t cb, void *user_data); | |
52 | ||
5eef597e MP |
53 | int dhcp_message_init(DHCPMessage *message, uint8_t op, uint32_t xid, |
54 | uint8_t type, uint16_t arp_type, size_t optlen, | |
55 | size_t *optoffset); | |
60f067b4 | 56 | |
e842803a | 57 | uint16_t dhcp_packet_checksum(uint8_t *buf, size_t len); |
60f067b4 JS |
58 | |
59 | void dhcp_packet_append_ip_headers(DHCPPacket *packet, be32_t source_addr, | |
60 | uint16_t source, be32_t destination_addr, | |
61 | uint16_t destination, uint16_t len); | |
62 | ||
63 | int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len, bool checksum); | |
64 | ||
e842803a MB |
65 | DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp_client*, sd_dhcp_client_unref); |
66 | #define _cleanup_dhcp_client_unref_ _cleanup_(sd_dhcp_client_unrefp) | |
67 | ||
68 | /* If we are invoking callbacks of a dhcp-client, ensure unreffing the | |
69 | * client from the callback doesn't destroy the object we are working | |
70 | * on */ | |
71 | #define DHCP_CLIENT_DONT_DESTROY(client) \ | |
72 | _cleanup_dhcp_client_unref_ _unused_ sd_dhcp_client *_dont_destroy_##client = sd_dhcp_client_ref(client) | |
73 | ||
f47781d8 | 74 | #define log_dhcp_client(client, fmt, ...) log_internal(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, "DHCP CLIENT (0x%x): " fmt, client->xid, ##__VA_ARGS__) |