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      1 /*
      2  * dhcpcd - DHCP client daemon
      3  * Copyright (c) 2006-2010 Roy Marples <roy (at) 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