/*      $OpenBSD: bootp.h,v 1.5 2003/08/11 06:23:09 deraadt Exp $       */
/*      $NetBSD: bootp.h,v 1.3 1996/09/26 23:22:01 cgd Exp $    */

/*
 * Bootstrap Protocol (BOOTP).  RFC951 and RFC1048.
 *
 * This file specifies the "implementation-independent" BOOTP protocol
 * information which is common to both client and server.
 *
 * Copyright 1988 by Carnegie Mellon.
 *
 * Permission to use, copy, modify, and distribute this program for any
 * purpose and without fee is hereby granted, provided that this copyright
 * and permission notice appear on all copies and supporting documentation,
 * the name of Carnegie Mellon not be used in advertising or publicity
 * pertaining to distribution of the program without specific prior
 * permission, and notice be given in supporting documentation that copying
 * and distribution is by permission of Carnegie Mellon and Stanford
 * University.  Carnegie Mellon makes no representations about the
 * suitability of this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 */

#define BP_CHADDR_LEN   16
#define BP_SNAME_LEN    64
#define BP_FILE_LEN     128
#define BP_VEND_LEN     64
#define BP_MINPKTSZ     300     /* to check sizeof(struct bootp) */


struct bootp {
        u_char          bp_op;                  /* packet opcode type */
        u_char          bp_htype;               /* hardware addr type */
        u_char          bp_hlen;                /* hardware addr length */
        u_char          bp_hops;                /* gateway hops */
        u_int           bp_xid;                 /* transaction ID */
        u_short         bp_secs;                /* seconds since boot began */
        u_short         bp_flags;               /* RFC1532 broadcast, etc. */
        struct in_addr  bp_ciaddr;              /* client IP address */
        struct in_addr  bp_yiaddr;              /* 'your' IP address */
        struct in_addr  bp_siaddr;              /* server IP address */
        struct in_addr  bp_giaddr;              /* gateway IP address */
        u_char          bp_chaddr[BP_CHADDR_LEN];/* client hardware address */
        u_char          bp_sname[BP_SNAME_LEN]; /* server host name */
        u_char          bp_file[BP_FILE_LEN];   /* boot file name */
        u_char          bp_vend[BP_VEND_LEN];   /* vendor-specific area */
};

/*
 * UDP port numbers, server and client.
 */
#define IPPORT_BOOTPS           67
#define IPPORT_BOOTPC           68

#define BOOTREPLY               2
#define BOOTREQUEST             1

/*
 * Hardware types from Assigned Numbers RFC.
 */
#define HTYPE_ETHERNET          1
#define HTYPE_EXP_ETHERNET      2
#define HTYPE_AX25              3
#define HTYPE_PRONET            4
#define HTYPE_CHAOS             5
#define HTYPE_IEEE802           6
#define HTYPE_ARCNET            7

/*
 * Vendor magic cookie (v_magic) for CMU
 */
#define VM_CMU          "CMU"

/*
 * Vendor magic cookie (v_magic) for RFC1048
 */
#define VM_RFC1048      { 99, 130, 83, 99 }



/*
 * RFC1048 tag values used to specify what information is being supplied in
 * the vendor field of the packet.
 */

#define TAG_PAD                 ((unsigned char)   0)
#define TAG_SUBNET_MASK         ((unsigned char)   1)
#define TAG_TIME_OFFSET         ((unsigned char)   2)
#define TAG_GATEWAY             ((unsigned char)   3)
#define TAG_TIME_SERVER         ((unsigned char)   4)
#define TAG_NAME_SERVER         ((unsigned char)   5)
#define TAG_DOMAIN_SERVER       ((unsigned char)   6)
#define TAG_LOG_SERVER          ((unsigned char)   7)
#define TAG_COOKIE_SERVER       ((unsigned char)   8)
#define TAG_LPR_SERVER          ((unsigned char)   9)
#define TAG_IMPRESS_SERVER      ((unsigned char)  10)
#define TAG_RLP_SERVER          ((unsigned char)  11)
#define TAG_HOSTNAME            ((unsigned char)  12)
#define TAG_BOOTSIZE            ((unsigned char)  13)
#define TAG_DUMPFILE            ((unsigned char)  14)
#define TAG_DOMAINNAME          ((unsigned char)  15)
#define TAG_SWAPSERVER          ((unsigned char)  16)
#define TAG_ROOTPATH            ((unsigned char)  17)
#define TAG_EXTEN_FILE          ((unsigned char)  18)
#define TAG_NIS_DOMAIN          ((unsigned char)  40)
#define TAG_NIS_SERVER          ((unsigned char)  41)
#define TAG_NTP_SERVER          ((unsigned char)  42)
#define TAG_MAX_MSGSZ           ((unsigned char)  57)
#define TAG_END                 ((unsigned char) 255)



/*
 * "vendor" data permitted for CMU bootp clients.
 */

struct cmu_vend {
        unsigned char   v_magic[4];     /* magic number */
        unsigned int    v_flags;        /* flags/opcodes, etc. */
        struct in_addr  v_smask;        /* Subnet mask */
        struct in_addr  v_dgate;        /* Default gateway */
        struct in_addr  v_dns1, v_dns2; /* Domain name servers */
        struct in_addr  v_ins1, v_ins2; /* IEN-116 name servers */
        struct in_addr  v_ts1, v_ts2;   /* Time servers */
        unsigned char   v_unused[25];   /* currently unused */
};

/* v_flags values */
#define VF_SMASK        1       /* Subnet mask field contains valid data */

void    bootp(int);