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      1 /*	$NetBSD: bootp.h,v 1.10 2019/03/31 20:08:45 christos Exp $	*/
      2 
      3 /*
      4  * Bootstrap Protocol (BOOTP).  RFC951 and RFC1048.
      5  *
      6  * This file specifies the "implementation-independent" BOOTP protocol
      7  * information which is common to both client and server.
      8  *
      9  * Copyright 1988 by Carnegie Mellon.
     10  *
     11  * Permission to use, copy, modify, and distribute this program for any
     12  * purpose and without fee is hereby granted, provided that this copyright
     13  * and permission notice appear on all copies and supporting documentation,
     14  * the name of Carnegie Mellon not be used in advertising or publicity
     15  * pertaining to distribution of the program without specific prior
     16  * permission, and notice be given in supporting documentation that copying
     17  * and distribution is by permission of Carnegie Mellon and Stanford
     18  * University.  Carnegie Mellon makes no representations about the
     19  * suitability of this software for any purpose.  It is provided "as is"
     20  * without express or implied warranty.
     21  */
     22 
     23 
     24 struct bootp {
     25 	unsigned char	bp_op;		/* packet opcode type */
     26 	unsigned char	bp_htype;	/* hardware addr type */
     27 	unsigned char	bp_hlen;	/* hardware addr length */
     28 	unsigned char	bp_hops;	/* gateway hops */
     29 	unsigned int	bp_xid;		/* transaction ID */
     30 	unsigned short	bp_secs;	/* seconds since boot began */
     31 	unsigned short	bp_flags;
     32 	struct in_addr	bp_ciaddr;	/* client IP address */
     33 	struct in_addr	bp_yiaddr;	/* 'your' IP address */
     34 	struct in_addr	bp_siaddr;	/* server IP address */
     35 	struct in_addr	bp_giaddr;	/* gateway IP address */
     36 	unsigned char	bp_chaddr[16];	/* client hardware address */
     37 	unsigned char	bp_sname[64];	/* server host name */
     38 	unsigned char	bp_file[128];	/* boot file name */
     39 #ifdef SUPPORT_DHCP
     40 #define BOOTP_VENDSIZE 312
     41 #else
     42 #define BOOTP_VENDSIZE 64
     43 #endif
     44 	unsigned char	bp_vend[BOOTP_VENDSIZE]; /* vendor-specific area */
     45 };
     46 
     47 /*
     48  * UDP port numbers, server and client.
     49  */
     50 #define	IPPORT_BOOTPS		67
     51 #define	IPPORT_BOOTPC		68
     52 
     53 #define BOOTREPLY		2
     54 #define BOOTREQUEST		1
     55 
     56 
     57 /*
     58  * Vendor magic cookie (v_magic) for CMU
     59  */
     60 #define VM_CMU		"CMU"
     61 
     62 /*
     63  * Vendor magic cookie (v_magic) for RFC1048
     64  */
     65 #define VM_RFC1048	{ 99, (char) 130, 83, 99 }
     66 
     67 
     68 /*
     69  * RFC1048 tag values used to specify what information is being supplied in
     70  * the vendor field of the packet.
     71  */
     72 
     73 #define TAG_PAD			((unsigned char)   0)
     74 #define TAG_SUBNET_MASK		((unsigned char)   1)
     75 #define TAG_TIME_OFFSET		((unsigned char)   2)
     76 #define TAG_GATEWAY		((unsigned char)   3)
     77 #define TAG_TIME_SERVER		((unsigned char)   4)
     78 #define TAG_NAME_SERVER		((unsigned char)   5)
     79 #define TAG_DOMAIN_SERVER	((unsigned char)   6)
     80 #define TAG_LOG_SERVER		((unsigned char)   7)
     81 #define TAG_COOKIE_SERVER	((unsigned char)   8)
     82 #define TAG_LPR_SERVER		((unsigned char)   9)
     83 #define TAG_IMPRESS_SERVER	((unsigned char)  10)
     84 #define TAG_RLP_SERVER		((unsigned char)  11)
     85 #define TAG_HOSTNAME		((unsigned char)  12)
     86 #define TAG_BOOTSIZE		((unsigned char)  13)
     87 #define TAG_DUMPFILE		((unsigned char)  14)
     88 #define TAG_DOMAINNAME		((unsigned char)  15)
     89 #define TAG_SWAPSERVER		((unsigned char)  16)
     90 #define TAG_ROOTPATH		((unsigned char)  17)
     91 
     92 #ifdef SUPPORT_DHCP
     93 #define TAG_REQ_ADDR		((unsigned char)  50)
     94 #define TAG_LEASETIME		((unsigned char)  51)
     95 #define TAG_OVERLOAD		((unsigned char)  52)
     96 #define TAG_DHCP_MSGTYPE	((unsigned char)  53)
     97 #define TAG_SERVERID		((unsigned char)  54)
     98 #define TAG_PARAM_REQ		((unsigned char)  55)
     99 #define TAG_MSG			((unsigned char)  56)
    100 #define TAG_MAXSIZE		((unsigned char)  57)
    101 #define TAG_T1			((unsigned char)  58)
    102 #define TAG_T2			((unsigned char)  59)
    103 #define TAG_CLASSID		((unsigned char)  60)
    104 #define TAG_CLIENTID		((unsigned char)  61)
    105 #endif
    106 
    107 #define TAG_END			((unsigned char) 255)
    108 
    109 #ifdef SUPPORT_DHCP
    110 #define DHCPDISCOVER	1
    111 #define DHCPOFFER	2
    112 #define DHCPREQUEST	3
    113 #define DHCPDECLINE	4
    114 #define DHCPACK		5
    115 #define DHCPNAK		6
    116 #define DHCPRELEASE	7
    117 #endif
    118 
    119 /*
    120  * "vendor" data permitted for CMU bootp clients.
    121  */
    122 
    123 struct cmu_vend {
    124 	unsigned char	v_magic[4];	/* magic number */
    125 	unsigned int	v_flags;	/* flags/opcodes, etc. */
    126 	struct in_addr	v_smask;	/* Subnet mask */
    127 	struct in_addr	v_dgate;	/* Default gateway */
    128 	struct in_addr	v_dns1, v_dns2; /* Domain name servers */
    129 	struct in_addr	v_ins1, v_ins2; /* IEN-116 name servers */
    130 	struct in_addr	v_ts1, v_ts2;	/* Time servers */
    131 	unsigned char	v_unused[25];	/* currently unused */
    132 };
    133 
    134 
    135 /* v_flags values */
    136 #define VF_SMASK	1	/* Subnet mask field contains valid data */
    137 
    138 extern void	bootp(int);
    139