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524cf458 PF |
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. | |
cf597f65 | 9 | Copyright (C) 2014 Tom Gundersen |
524cf458 PF |
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 | ||
8c00042c | 25 | #include <linux/if_packet.h> |
58587a7a | 26 | #include <net/ethernet.h> |
07630cea LP |
27 | #include <net/if_arp.h> |
28 | #include <stdint.h> | |
524cf458 | 29 | |
574cc928 | 30 | #include "sd-dhcp-client.h" |
07630cea | 31 | |
524cf458 | 32 | #include "dhcp-protocol.h" |
07630cea | 33 | #include "socket-util.h" |
524cf458 | 34 | |
76253e73 DW |
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); | |
085cabf2 | 38 | int dhcp_network_bind_udp_socket(be32_t address, uint16_t port); |
8c00042c PF |
39 | int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link, |
40 | const void *packet, size_t len); | |
080ab276 | 41 | int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port, |
234fc2df | 42 | const void *packet, size_t len); |
8b4a9693 | 43 | |
04b28be1 | 44 | int dhcp_option_append(DHCPMessage *message, size_t size, size_t *offset, uint8_t overload, |
20b958bf | 45 | uint8_t code, size_t optlen, const void *optval); |
524cf458 PF |
46 | |
47 | typedef int (*dhcp_option_cb_t)(uint8_t code, uint8_t len, | |
e4735228 | 48 | const void *option, void *userdata); |
cf597f65 | 49 | |
f693e9b3 | 50 | int dhcp_option_parse(DHCPMessage *message, size_t len, dhcp_option_cb_t cb, void *userdata, char **error_message); |
cf597f65 | 51 | |
76253e73 DW |
52 | int dhcp_message_init(DHCPMessage *message, uint8_t op, uint32_t xid, |
53 | uint8_t type, uint16_t arp_type, size_t optlen, | |
54 | size_t *optoffset); | |
cf597f65 | 55 | |
0bbc2c1f | 56 | uint16_t dhcp_packet_checksum(uint8_t *buf, size_t len); |
a838c939 | 57 | |
63edaa62 TG |
58 | void dhcp_packet_append_ip_headers(DHCPPacket *packet, be32_t source_addr, |
59 | uint16_t source, be32_t destination_addr, | |
60 | uint16_t destination, uint16_t len); | |
cf597f65 | 61 | |
55dab2ed | 62 | int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len, bool checksum); |
ee57a737 | 63 | |
574cc928 TG |
64 | /* If we are invoking callbacks of a dhcp-client, ensure unreffing the |
65 | * client from the callback doesn't destroy the object we are working | |
66 | * on */ | |
67 | #define DHCP_CLIENT_DONT_DESTROY(client) \ | |
4afd3348 | 68 | _cleanup_(sd_dhcp_client_unrefp) _unused_ sd_dhcp_client *_dont_destroy_##client = sd_dhcp_client_ref(client) |
574cc928 | 69 | |
79008bdd | 70 | #define log_dhcp_client(client, fmt, ...) log_internal(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, "DHCP CLIENT (0x%x): " fmt, client->xid, ##__VA_ARGS__) |