external/bsd/dhcpcd/dist/dhcpcd.h

   1 /*
   2  * dhcpcd - DHCP client daemon
   3  * Copyright (c) 2006-2009 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
  44 enum 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
  62 struct 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
  84 struct 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 arpable;
  95         int wireless;
  96         char ssid[IF_SSIDSIZE];
  97
  98         int raw_fd;
  99         int udp_fd;
 100         int arp_fd;
 101         size_t buffer_size, buffer_len, buffer_pos;
 102         unsigned char *buffer;
 103
 104         struct in_addr addr;
 105         struct in_addr net;
 106         struct in_addr dst;
 107
 108         char leasefile[PATH_MAX];
 109         time_t start_uptime;
 110
 111         unsigned char *clientid;
 112
 113         struct interface *next;
 114 };
 115
 116 extern int pidfd;
 117 extern int options;
 118 extern int ifac;
 119 extern char **ifav;
 120 extern int ifdc;
 121 extern char **ifdv;
 122 extern struct interface *ifaces;
 123
 124 struct interface *find_interface(const char *);
 125 int handle_args(struct fd_list *, int, char **);
 126 void handle_interface(int, const char *);
 127 void handle_ifa(int, const char *,
 128     struct in_addr *, struct in_addr *, struct in_addr *);
 129 void handle_exit_timeout(void *);
 130 void start_interface(void *);
 131 void start_discover(void *);
 132 void start_request(void *);
 133 void start_renew(void *);
 134 void start_rebind(void *);
 135 void start_reboot(struct interface *);
 136 void start_expire(void *);
 137 void send_decline(struct interface *);
 138 void close_sockets(struct interface *);
 139 void drop_config(struct interface *, const char *);
 140 int select_profile(struct interface *, const char *);
 141
 142 #endif