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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 | 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 | ||
60f067b4 | 23 | #include <linux/if_packet.h> |
5eef597e | 24 | #include <net/ethernet.h> |
db2df898 MP |
25 | #include <net/if_arp.h> |
26 | #include <stdint.h> | |
60f067b4 | 27 | |
e842803a | 28 | #include "sd-dhcp-client.h" |
db2df898 | 29 | |
60f067b4 | 30 | #include "dhcp-protocol.h" |
db2df898 | 31 | #include "socket-util.h" |
60f067b4 | 32 | |
5eef597e MP |
33 | int dhcp_network_bind_raw_socket(int index, union sockaddr_union *link, |
34 | uint32_t xid, const uint8_t *mac_addr, | |
35 | size_t mac_addr_len, uint16_t arp_type); | |
60f067b4 JS |
36 | int dhcp_network_bind_udp_socket(be32_t address, uint16_t port); |
37 | int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link, | |
38 | const void *packet, size_t len); | |
39 | int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port, | |
40 | const void *packet, size_t len); | |
41 | ||
42 | int dhcp_option_append(DHCPMessage *message, size_t size, size_t *offset, uint8_t overload, | |
43 | uint8_t code, size_t optlen, const void *optval); | |
44 | ||
aa27b158 | 45 | typedef int (*dhcp_option_callback_t)(uint8_t code, uint8_t len, |
d9dfd233 | 46 | const void *option, void *userdata); |
60f067b4 | 47 | |
aa27b158 | 48 | int dhcp_option_parse(DHCPMessage *message, size_t len, dhcp_option_callback_t cb, void *userdata, char **error_message); |
60f067b4 | 49 | |
5eef597e MP |
50 | int dhcp_message_init(DHCPMessage *message, uint8_t op, uint32_t xid, |
51 | uint8_t type, uint16_t arp_type, size_t optlen, | |
52 | size_t *optoffset); | |
60f067b4 | 53 | |
e842803a | 54 | uint16_t dhcp_packet_checksum(uint8_t *buf, size_t len); |
60f067b4 JS |
55 | |
56 | void dhcp_packet_append_ip_headers(DHCPPacket *packet, be32_t source_addr, | |
57 | uint16_t source, be32_t destination_addr, | |
58 | uint16_t destination, uint16_t len); | |
59 | ||
60 | int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len, bool checksum); | |
61 | ||
e842803a MB |
62 | /* If we are invoking callbacks of a dhcp-client, ensure unreffing the |
63 | * client from the callback doesn't destroy the object we are working | |
64 | * on */ | |
65 | #define DHCP_CLIENT_DONT_DESTROY(client) \ | |
4c89c718 | 66 | _cleanup_(sd_dhcp_client_unrefp) _unused_ sd_dhcp_client *_dont_destroy_##client = sd_dhcp_client_ref(client) |
e842803a | 67 | |
5a920b42 MP |
68 | #define log_dhcp_client_errno(client, error, fmt, ...) log_internal(LOG_DEBUG, error, __FILE__, __LINE__, __func__, "DHCP CLIENT (0x%x): " fmt, client->xid, ##__VA_ARGS__) |
69 | #define log_dhcp_client(client, fmt, ...) log_dhcp_client_errno(client, 0, fmt, ##__VA_ARGS__) |