The Tcpdump Group git mirrors - tcpdump/blob - bootp.h

   1 /* @(#) $Header: /tcpdump/master/tcpdump/bootp.h,v 1.7 1999-10-07 23:47:09 mcr Exp $ (LBL) */
   2 /*
   3  * Bootstrap Protocol (BOOTP).  RFC951 and RFC1048.
   4  *
   5  * This file specifies the "implementation-independent" BOOTP protocol
   6  * information which is common to both client and server.
   7  *
   8  * Copyright 1988 by Carnegie Mellon.
   9  *
  10  * Permission to use, copy, modify, and distribute this program for any
  11  * purpose and without fee is hereby granted, provided that this copyright
  12  * and permission notice appear on all copies and supporting documentation,
  13  * the name of Carnegie Mellon not be used in advertising or publicity
  14  * pertaining to distribution of the program without specific prior
  15  * permission, and notice be given in supporting documentation that copying
  16  * and distribution is by permission of Carnegie Mellon and Stanford
  17  * University.  Carnegie Mellon makes no representations about the
  18  * suitability of this software for any purpose.  It is provided "as is"
  19  * without express or implied warranty.
  20  */
  21
  22
  23 struct bootp {
  24         unsigned char   bp_op;          /* packet opcode type */
  25         unsigned char   bp_htype;       /* hardware addr type */
  26         unsigned char   bp_hlen;        /* hardware addr length */
  27         unsigned char   bp_hops;        /* gateway hops */
  28         u_int32_t       bp_xid;         /* transaction ID */
  29         unsigned short  bp_secs;        /* seconds since boot began */
  30         unsigned short  bp_unused;
  31         struct in_addr  bp_ciaddr;      /* client IP address */
  32         struct in_addr  bp_yiaddr;      /* 'your' IP address */
  33         struct in_addr  bp_siaddr;      /* server IP address */
  34         struct in_addr  bp_giaddr;      /* gateway IP address */
  35         unsigned char   bp_chaddr[16];  /* client hardware address */
  36         unsigned char   bp_sname[64];   /* server host name */
  37         unsigned char   bp_file[128];   /* boot file name */
  38         unsigned char   bp_vend[64];    /* vendor-specific area */
  39 };
  40
  41 /*
  42  * UDP port numbers, server and client.
  43  */
  44 #define IPPORT_BOOTPS           67
  45 #define IPPORT_BOOTPC           68
  46
  47 #define BOOTREPLY               2
  48 #define BOOTREQUEST             1
  49
  50
  51 /*
  52  * Vendor magic cookie (v_magic) for CMU
  53  */
  54 #define VM_CMU          "CMU"
  55
  56 /*
  57  * Vendor magic cookie (v_magic) for RFC1048
  58  */
  59 #define VM_RFC1048      { 99, 130, 83, 99 }
  60
  61 \f
  62
  63 /*
  64  * RFC1048 tag values used to specify what information is being supplied in
  65  * the vendor field of the packet.
  66  */
  67
  68 #define TAG_PAD                 ((unsigned char)   0)
  69 #define TAG_SUBNET_MASK         ((unsigned char)   1)
  70 #define TAG_TIME_OFFSET         ((unsigned char)   2)
  71 #define TAG_GATEWAY             ((unsigned char)   3)
  72 #define TAG_TIME_SERVER         ((unsigned char)   4)
  73 #define TAG_NAME_SERVER         ((unsigned char)   5)
  74 #define TAG_DOMAIN_SERVER       ((unsigned char)   6)
  75 #define TAG_LOG_SERVER          ((unsigned char)   7)
  76 #define TAG_COOKIE_SERVER       ((unsigned char)   8)
  77 #define TAG_LPR_SERVER          ((unsigned char)   9)
  78 #define TAG_IMPRESS_SERVER      ((unsigned char)  10)
  79 #define TAG_RLP_SERVER          ((unsigned char)  11)
  80 #define TAG_HOSTNAME            ((unsigned char)  12)
  81 #define TAG_BOOTSIZE            ((unsigned char)  13)
  82 #define TAG_END                 ((unsigned char) 255)
  83 /* RFC1497 tags */
  84 #define TAG_DUMPPATH            ((unsigned char)  14)
  85 #define TAG_DOMAINNAME          ((unsigned char)  15)
  86 #define TAG_SWAP_SERVER         ((unsigned char)  16)
  87 #define TAG_ROOTPATH            ((unsigned char)  17)
  88 #define TAG_EXTPATH             ((unsigned char)  18)
  89
  90
  91
  92 /*
  93  * "vendor" data permitted for CMU bootp clients.
  94  */
  95
  96 struct cmu_vend {
  97         unsigned char   v_magic[4];     /* magic number */
  98         u_int32_t       v_flags;        /* flags/opcodes, etc. */
  99         struct in_addr  v_smask;        /* Subnet mask */
 100         struct in_addr  v_dgate;        /* Default gateway */
 101         struct in_addr  v_dns1, v_dns2; /* Domain name servers */
 102         struct in_addr  v_ins1, v_ins2; /* IEN-116 name servers */
 103         struct in_addr  v_ts1, v_ts2;   /* Time servers */
 104         unsigned char   v_unused[24];   /* currently unused */
 105 };
 106
 107
 108 /* v_flags values */
 109 #define VF_SMASK        1       /* Subnet mask field contains valid data */