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

   1 /* @(#) $Header: /tcpdump/master/tcpdump/bootp.h,v 1.9 2000-10-03 02:54:54 itojun 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         u_int8_t        bp_op;          /* packet opcode type */
  25         u_int8_t        bp_htype;       /* hardware addr type */
  26         u_int8_t        bp_hlen;        /* hardware addr length */
  27         u_int8_t        bp_hops;        /* gateway hops */
  28         u_int32_t       bp_xid;         /* transaction ID */
  29         u_int16_t       bp_secs;        /* seconds since boot began */
  30         u_int16_t       bp_flags;       /* flags: 0x8000 is broadcast */
  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         u_int8_t        bp_chaddr[16];  /* client hardware address */
  36         u_int8_t        bp_sname[64];   /* server host name */
  37         u_int8_t        bp_file[128];   /* boot file name */
  38         u_int8_t        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                 ((u_int8_t)   0)
  69 #define TAG_SUBNET_MASK         ((u_int8_t)   1)
  70 #define TAG_TIME_OFFSET         ((u_int8_t)   2)
  71 #define TAG_GATEWAY             ((u_int8_t)   3)
  72 #define TAG_TIME_SERVER         ((u_int8_t)   4)
  73 #define TAG_NAME_SERVER         ((u_int8_t)   5)
  74 #define TAG_DOMAIN_SERVER       ((u_int8_t)   6)
  75 #define TAG_LOG_SERVER          ((u_int8_t)   7)
  76 #define TAG_COOKIE_SERVER       ((u_int8_t)   8)
  77 #define TAG_LPR_SERVER          ((u_int8_t)   9)
  78 #define TAG_IMPRESS_SERVER      ((u_int8_t)  10)
  79 #define TAG_RLP_SERVER          ((u_int8_t)  11)
  80 #define TAG_HOSTNAME            ((u_int8_t)  12)
  81 #define TAG_BOOTSIZE            ((u_int8_t)  13)
  82 #define TAG_END                 ((u_int8_t) 255)
  83 /* RFC1497 tags */
  84 #define TAG_DUMPPATH            ((u_int8_t)  14)
  85 #define TAG_DOMAINNAME          ((u_int8_t)  15)
  86 #define TAG_SWAP_SERVER         ((u_int8_t)  16)
  87 #define TAG_ROOTPATH            ((u_int8_t)  17)
  88 #define TAG_EXTPATH             ((u_int8_t)  18)
  89 /* RFC2132 */
  90 #define TAG_IP_FORWARD          ((u_int8_t)  19)
  91 #define TAG_NL_SRCRT            ((u_int8_t)  20)
  92 #define TAG_PFILTERS            ((u_int8_t)  21)
  93 #define TAG_REASS_SIZE          ((u_int8_t)  22)
  94 #define TAG_DEF_TTL             ((u_int8_t)  23)
  95 #define TAG_MTU_TIMEOUT         ((u_int8_t)  24)
  96 #define TAG_MTU_TABLE           ((u_int8_t)  25)
  97 #define TAG_INT_MTU             ((u_int8_t)  26)
  98 #define TAG_LOCAL_SUBNETS       ((u_int8_t)  27)
  99 #define TAG_BROAD_ADDR          ((u_int8_t)  28)
 100 #define TAG_DO_MASK_DISC        ((u_int8_t)  29)
 101 #define TAG_SUPPLY_MASK         ((u_int8_t)  30)
 102 #define TAG_DO_RDISC            ((u_int8_t)  31)
 103 #define TAG_RTR_SOL_ADDR        ((u_int8_t)  32)
 104 #define TAG_STATIC_ROUTE        ((u_int8_t)  33)
 105 #define TAG_USE_TRAILERS        ((u_int8_t)  34)
 106 #define TAG_ARP_TIMEOUT         ((u_int8_t)  35)
 107 #define TAG_ETH_ENCAP           ((u_int8_t)  36)
 108 #define TAG_TCP_TTL             ((u_int8_t)  37)
 109 #define TAG_TCP_KEEPALIVE       ((u_int8_t)  38)
 110 #define TAG_KEEPALIVE_GO        ((u_int8_t)  39)
 111 #define TAG_NIS_DOMAIN          ((u_int8_t)  40)
 112 #define TAG_NIS_SERVERS         ((u_int8_t)  41)
 113 #define TAG_NTP_SERVERS         ((u_int8_t)  42)
 114 #define TAG_VENDOR_OPTS         ((u_int8_t)  43)
 115 #define TAG_NETBIOS_NS          ((u_int8_t)  44)
 116 #define TAG_NETBIOS_DDS         ((u_int8_t)  45)
 117 #define TAG_NETBIOS_NODE        ((u_int8_t)  46)
 118 #define TAG_NETBIOS_SCOPE       ((u_int8_t)  47)
 119 #define TAG_XWIN_FS             ((u_int8_t)  48)
 120 #define TAG_XWIN_DM             ((u_int8_t)  49)
 121 #define TAG_NIS_P_DOMAIN        ((u_int8_t)  64)
 122 #define TAG_NIS_P_SERVERS       ((u_int8_t)  65)
 123 #define TAG_MOBILE_HOME         ((u_int8_t)  68)
 124 #define TAG_SMPT_SERVER         ((u_int8_t)  69)
 125 #define TAG_POP3_SERVER         ((u_int8_t)  70)
 126 #define TAG_NNTP_SERVER         ((u_int8_t)  71)
 127 #define TAG_WWW_SERVER          ((u_int8_t)  72)
 128 #define TAG_FINGER_SERVER       ((u_int8_t)  73)
 129 #define TAG_IRC_SERVER          ((u_int8_t)  74)
 130 #define TAG_STREETTALK_SRVR     ((u_int8_t)  75)
 131 #define TAG_STREETTALK_STDA     ((u_int8_t)  76)
 132 /* DHCP options */
 133 #define TAG_REQUESTED_IP        ((u_int8_t)  50)
 134 #define TAG_IP_LEASE            ((u_int8_t)  51)
 135 #define TAG_OPT_OVERLOAD        ((u_int8_t)  52)
 136 #define TAG_TFTP_SERVER         ((u_int8_t)  66)
 137 #define TAG_BOOTFILENAME        ((u_int8_t)  67)
 138 #define TAG_DHCP_MESSAGE        ((u_int8_t)  53)
 139 #define TAG_SERVER_ID           ((u_int8_t)  54)
 140 #define TAG_PARM_REQUEST        ((u_int8_t)  55)
 141 #define TAG_MESSAGE             ((u_int8_t)  56)
 142 #define TAG_MAX_MSG_SIZE        ((u_int8_t)  57)
 143 #define TAG_RENEWAL_TIME        ((u_int8_t)  58)
 144 #define TAG_REBIND_TIME         ((u_int8_t)  59)
 145 #define TAG_VENDOR_CLASS        ((u_int8_t)  60)
 146 #define TAG_CLIENT_ID           ((u_int8_t)  61)
 147
 148 /* DHCP Message types (values for TAG_DHCP_MESSAGE option) */
 149 #define         DHCPDISCOVER    1
 150 #define         DHCPOFFER       2
 151 #define         DHCPREQUEST     3
 152 #define         DHCPDECLINE     4
 153 #define         DHCPACK         5
 154 #define         DHCPNAK         6
 155 #define         DHCPRELEASE     7
 156 #define         DHCPINFORM      8
 157
 158
 159 /*
 160  * "vendor" data permitted for CMU bootp clients.
 161  */
 162
 163 struct cmu_vend {
 164         u_int8_t        v_magic[4];     /* magic number */
 165         u_int32_t       v_flags;        /* flags/opcodes, etc. */
 166         struct in_addr  v_smask;        /* Subnet mask */
 167         struct in_addr  v_dgate;        /* Default gateway */
 168         struct in_addr  v_dns1, v_dns2; /* Domain name servers */
 169         struct in_addr  v_ins1, v_ins2; /* IEN-116 name servers */
 170         struct in_addr  v_ts1, v_ts2;   /* Time servers */
 171         u_int8_t        v_unused[24];   /* currently unused */
 172 };
 173
 174
 175 /* v_flags values */
 176 #define VF_SMASK        1       /* Subnet mask field contains valid data */