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 "dhcp.h"
37 #include "if-options.h"
38 
39 #define HWADDR_LEN 20
40 #define IF_SSIDSIZE 33
41 #define PROFILE_LEN 64
42 
43 enum DHS {
44           DHS_INIT,
45           DHS_DISCOVER,
46           DHS_REQUEST,
47           DHS_BOUND,
48           DHS_RENEW,
49           DHS_REBIND,
50           DHS_REBOOT,
51           DHS_INFORM,
52           DHS_RENEW_REQUESTED,
53           DHS_INIT_IPV4LL,
54           DHS_PROBE
55 };
56 
57 #define LINK_UP     1
58 #define LINK_UNKNOWN          0
59 #define LINK_DOWN   -1
60 
61 struct if_state {
62           enum DHS state;
63           char profile[PROFILE_LEN];
64           struct if_options *options;
65           struct dhcp_message *sent;
66           struct dhcp_message *offer;
67           struct dhcp_message *new;
68           struct dhcp_message *old;
69           struct dhcp_lease lease;
70           const char *reason;
71           time_t interval;
72           time_t nakoff;
73           uint32_t xid;
74           int socket;
75           int probes;
76           int claims;
77           int conflicts;
78           time_t defend;
79           struct in_addr fail;
80           size_t arping_index;
81 };
82 
83 struct interface {
84           char name[IF_NAMESIZE];
85           struct if_state *state;
86 
87           int flags;
88           sa_family_t family;
89           unsigned char hwaddr[HWADDR_LEN];
90           size_t hwlen;
91           int metric;
92           int carrier;
93           int wireless;
94           char ssid[IF_SSIDSIZE];
95 
96           int raw_fd;
97           int udp_fd;
98           int arp_fd;
99           size_t buffer_size, buffer_len, buffer_pos;
100           unsigned char *buffer;
101 
102           struct in_addr addr;
103           struct in_addr net;
104           struct in_addr dst;
105 
106           char leasefile[PATH_MAX];
107           time_t start_uptime;
108 
109           unsigned char *clientid;
110 
111           struct interface *next;
112 };
113 
114 extern int pidfd;
115 extern int options;
116 extern int ifac;
117 extern char **ifav;
118 extern int ifdc;
119 extern char **ifdv;
120 extern struct interface *ifaces;
121 
122 #endif
123