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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> | |
27 | ||
28 | #include "socket-util.h" | |
29 | ||
30 | #include "dhcp-protocol.h" | |
31 | ||
32 | int dhcp_network_bind_raw_socket(int index, union sockaddr_union *link, uint32_t xid); | |
33 | int dhcp_network_bind_udp_socket(be32_t address, uint16_t port); | |
34 | int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link, | |
35 | const void *packet, size_t len); | |
36 | int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port, | |
37 | const void *packet, size_t len); | |
38 | ||
39 | int dhcp_option_append(DHCPMessage *message, size_t size, size_t *offset, uint8_t overload, | |
40 | uint8_t code, size_t optlen, const void *optval); | |
41 | ||
42 | typedef int (*dhcp_option_cb_t)(uint8_t code, uint8_t len, | |
43 | const uint8_t *option, void *user_data); | |
44 | ||
45 | int dhcp_option_parse(DHCPMessage *message, size_t len, | |
46 | dhcp_option_cb_t cb, void *user_data); | |
47 | ||
48 | int dhcp_message_init(DHCPMessage *message, uint8_t op, uint32_t xid, uint8_t type, | |
49 | size_t optlen, size_t *optoffset); | |
50 | ||
51 | uint16_t dhcp_packet_checksum(void *buf, size_t len); | |
52 | ||
53 | void dhcp_packet_append_ip_headers(DHCPPacket *packet, be32_t source_addr, | |
54 | uint16_t source, be32_t destination_addr, | |
55 | uint16_t destination, uint16_t len); | |
56 | ||
57 | int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len, bool checksum); | |
58 | ||
59 | #define log_dhcp_client(client, fmt, ...) log_meta(LOG_DEBUG, __FILE__, __LINE__, __func__, "DHCP CLIENT (0x%x): " fmt, client->xid, ##__VA_ARGS__) |