dhcpcd.h revision e86eee143ed21592f88a46623a81f71002430459 
1/*
2 * dhcpcd - DHCP client daemon
3 * Copyright (c) 2006-2010 Roy Marples <roy@marples.name>
4 * All rights reserved
5
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#ifndef DHCPCD_H
29#define DHCPCD_H
30
31#include <sys/socket.h>
32#include <net/if.h>
33
34#include <limits.h>
35
36#include "control.h"
37#include "dhcp.h"
38#include "if-options.h"
39
40#define HWADDR_LEN 20
41#define IF_SSIDSIZE 33
42#define PROFILE_LEN 64
43
44enum DHS {
45	DHS_INIT,
46	DHS_DISCOVER,
47	DHS_REQUEST,
48	DHS_BOUND,
49	DHS_RENEW,
50	DHS_REBIND,
51	DHS_REBOOT,
52	DHS_INFORM,
53	DHS_RENEW_REQUESTED,
54	DHS_INIT_IPV4LL,
55	DHS_PROBE
56};
57
58#define LINK_UP 	1
59#define LINK_UNKNOWN	0
60#define LINK_DOWN 	-1
61
62struct if_state {
63	enum DHS state;
64	char profile[PROFILE_LEN];
65	struct if_options *options;
66	struct dhcp_message *sent;
67	struct dhcp_message *offer;
68	struct dhcp_message *new;
69	struct dhcp_message *old;
70	struct dhcp_lease lease;
71	const char *reason;
72	time_t interval;
73	time_t nakoff;
74	uint32_t xid;
75	int socket;
76	int probes;
77	int claims;
78	int conflicts;
79	time_t defend;
80	struct in_addr fail;
81	size_t arping_index;
82};
83
84struct interface {
85	char name[IF_NAMESIZE];
86	struct if_state *state;
87
88	int flags;
89	sa_family_t family;
90	unsigned char hwaddr[HWADDR_LEN];
91	size_t hwlen;
92	int metric;
93	int carrier;
94	int wireless;
95	char ssid[IF_SSIDSIZE];
96
97	int raw_fd;
98	int udp_fd;
99	int arp_fd;
100	size_t buffer_size, buffer_len, buffer_pos;
101	unsigned char *buffer;
102
103	struct in_addr addr;
104	struct in_addr net;
105	struct in_addr dst;
106
107	char leasefile[PATH_MAX];
108	time_t start_uptime;
109
110	unsigned char *clientid;
111
112	struct interface *next;
113};
114
115extern int pidfd;
116extern int options;
117extern int ifac;
118extern char **ifav;
119extern int ifdc;
120extern char **ifdv;
121extern struct interface *ifaces;
122
123struct interface *find_interface(const char *);
124int handle_args(struct fd_list *, int, char **);
125void handle_interface(int, const char *);
126void handle_hwaddr(const char *, unsigned char *, size_t);
127void handle_ifa(int, const char *,
128    struct in_addr *, struct in_addr *, struct in_addr *);
129void handle_exit_timeout(void *);
130void start_interface(void *);
131void start_discover(void *);
132void start_request(void *);
133void start_renew(void *);
134void start_rebind(void *);
135void start_reboot(struct interface *);
136void start_expire(void *);
137void send_decline(struct interface *);
138void open_sockets(struct interface *);
139void close_sockets(struct interface *);
140void drop_config(struct interface *, const char *);
141int select_profile(struct interface *, const char *);
142
143#endif
144