usr.sbin/bootp/common/bootpd.h

   1 /*      $NetBSD: bootpd.h,v 1.4 1998/01/09 08:09:02 perry Exp $ */
   2
   3 /************************************************************************
   4           Copyright 1988, 1991 by Carnegie Mellon University
   5
   6                           All Rights Reserved
   7
   8 Permission to use, copy, modify, and distribute this software and its
   9 documentation for any purpose and without fee is hereby granted, provided
  10 that the above copyright notice appear in all copies and that both that
  11 copyright notice and this permission notice appear in supporting
  12 documentation, and that the name of Carnegie Mellon University not be used
  13 in advertising or publicity pertaining to distribution of the software
  14 without specific, written prior permission.
  15
  16 CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  17 SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
  18 IN NO EVENT SHALL CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
  19 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  20 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  21 ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  22 SOFTWARE.
  23 ************************************************************************/
  24
  25
  26 /*
  27  * bootpd.h -- common header file for all the modules of the bootpd program.
  28  */
  29
  30 #include "bptypes.h"
  31 #include "hash.h"
  32 #include "hwaddr.h"
  33
  34 #ifndef TRUE
  35 #define TRUE    1
  36 #endif
  37 #ifndef FALSE
  38 #define FALSE   0
  39 #endif
  40
  41 #ifndef PRIVATE
  42 #define PRIVATE static
  43 #endif
  44
  45 #ifndef SIGUSR1
  46 #define SIGUSR1                  30     /* From 4.3 <signal.h> */
  47 #endif
  48
  49 #define MAXSTRINGLEN             80     /* Max string length */
  50
  51 /* Local definitions: */
  52 #define MAX_MSG_SIZE            (3*512) /* Maximum packet size */
  53
  54
  55 /*
  56  * Return pointer to static string which gives full network error message.
  57  */
  58 #define get_network_errmsg get_errmsg
  59
  60
  61 /*
  62  * Data structure used to hold an arbitrary-lengthed list of IP addresses.
  63  * The list may be shared among multiple hosts by setting the linkcount
  64  * appropriately.
  65  */
  66
  67 struct in_addr_list {
  68     unsigned int        linkcount, addrcount;
  69     struct in_addr      addr[1];                /* Dynamically extended */
  70 };
  71
  72
  73 /*
  74  * Data structures used to hold shared strings and shared binary data.
  75  * The linkcount must be set appropriately.
  76  */
  77
  78 struct shared_string {
  79     unsigned int        linkcount;
  80     char                string[1];              /* Dynamically extended */
  81 };
  82
  83 struct shared_bindata {
  84     unsigned int        linkcount, length;
  85     byte                data[1];                /* Dynamically extended */
  86 };
  87
  88
  89 /*
  90  * Flag structure which indicates which symbols have been defined for a
  91  * given host.  This information is used to determine which data should or
  92  * should not be reported in the bootp packet vendor info field.
  93  */
  94
  95 struct flag {
  96     unsigned    bootfile        :1,
  97                 bootserver      :1,
  98                 bootsize        :1,
  99                 bootsize_auto   :1,
 100                 cookie_server   :1,
 101                 domain_server   :1,
 102                 gateway         :1,
 103                 generic         :1,
 104                 haddr           :1,
 105                 homedir         :1,
 106                 htype           :1,
 107                 impress_server  :1,
 108                 iaddr           :1,
 109                 log_server      :1,
 110                 lpr_server      :1,
 111                 name_server     :1,
 112                 name_switch     :1,
 113                 rlp_server      :1,
 114                 send_name       :1,
 115                 subnet_mask     :1,
 116                 tftpdir         :1,
 117                 time_offset     :1,
 118                 time_server     :1,
 119                 dump_file       :1,
 120                 domain_name     :1,
 121                 swap_server     :1,
 122                 root_path       :1,
 123                 exten_file      :1,
 124                 reply_addr      :1,
 125                 nis_domain      :1,
 126                 nis_server      :1,
 127                 ntp_server      :1,
 128                 exec_file       :1,
 129                 msg_size        :1,
 130                 min_wait        :1,
 131                 /* XXX - Add new tags here */
 132                 vm_cookie       :1;
 133 };
 134
 135 \f
 136
 137 /*
 138  * The flags structure contains TRUE flags for all the fields which
 139  * are considered valid, regardless of whether they were explicitly
 140  * specified or indirectly inferred from another entry.
 141  *
 142  * The gateway and the various server fields all point to a shared list of
 143  * IP addresses.
 144  *
 145  * The hostname, home directory, and bootfile are all shared strings.
 146  *
 147  * The generic data field is a shared binary data structure.  It is used to
 148  * hold future RFC1048 vendor data until bootpd is updated to understand it.
 149  *
 150  * The vm_cookie field specifies the four-octet vendor magic cookie to use
 151  * if it is desired to always send the same response to a given host.
 152  *
 153  * Hopefully, the rest is self-explanatory.
 154  */
 155
 156 struct host {
 157     unsigned                linkcount;          /* hash list inserts */
 158     struct flag             flags;              /* ALL valid fields */
 159     struct in_addr_list     *cookie_server,
 160                             *domain_server,
 161                             *gateway,
 162                             *impress_server,
 163                             *log_server,
 164                             *lpr_server,
 165                             *name_server,
 166                             *rlp_server,
 167                             *time_server,
 168                             *nis_server,
 169                             *ntp_server;
 170     struct shared_string    *bootfile,
 171                             *hostname,
 172                             *domain_name,
 173                             *homedir,
 174                             *tftpdir,
 175                             *dump_file,
 176                             *exten_file,
 177                             *root_path,
 178                             *nis_domain,
 179                             *exec_file;
 180     struct shared_bindata   *generic;
 181     byte                    vm_cookie[4],
 182                             htype,  /* RFC826 says this should be 16-bits but
 183                                        RFC951 only allocates 1 byte. . . */
 184                             haddr[MAXHADDRLEN];
 185     int32                   time_offset;
 186     u_int32                 bootsize,
 187                             msg_size,
 188                             min_wait;
 189     struct in_addr          bootserver,
 190                             iaddr,
 191                             swap_server,
 192                             reply_addr,
 193                             subnet_mask;
 194     /* XXX - Add new tags here (or above as appropriate) */
 195 };
 196 \f
 197
 198
 199 /*
 200  * Variables shared among modules.
 201  */
 202
 203 extern int debug;
 204 extern const char *bootptab;
 205 extern const char *progname;
 206
 207 extern u_char vm_cmu[4];
 208 extern u_char vm_rfc1048[4];
 209
 210 extern hash_tbl *hwhashtable;
 211 extern hash_tbl *iphashtable;
 212 extern hash_tbl *nmhashtable;
 213