libexec/bootpd/dumptab.c

   1 /*
   2  * dumptab.c - handles dumping the database
   3  *
   4  * $FreeBSD: src/libexec/bootpd/dumptab.c,v 1.6.2.1 2001/10/14 21:39:48 iedowse Exp $
   5  */
   6
   7 #include <sys/types.h>
   8 #include <netinet/in.h>
   9 #include <arpa/inet.h>                  /* inet_ntoa */
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <syslog.h>
  14 #include <time.h>
  15
  16 #ifndef USE_BFUNCS
  17 #include <memory.h>
  18 /* Yes, memcpy is OK here (no overlapped copies). */
  19 #define bcopy(a,b,c)    memcpy(b,a,c)
  20 #define bzero(p,l)      memset(p,0,l)
  21 #define bcmp(a,b,c)     memcmp(a,b,c)
  22 #endif
  23
  24 #include "bootp.h"
  25 #include "hash.h"
  26 #include "hwaddr.h"
  27 #include "report.h"
  28 #include "patchlevel.h"
  29 #include "bootpd.h"
  30
  31 #ifdef DEBUG
  32 static void dump_generic(FILE *, struct shared_bindata *);
  33 static void dump_host(FILE *, struct host *);
  34 static void list_ipaddresses(FILE *, struct in_addr_list *);
  35 #endif
  36
  37 #ifndef DEBUG
  38 void
  39 dumptab(char *filename)
  40 {
  41         report(LOG_INFO, "No dumptab support!");
  42 }
  43
  44 #else /* DEBUG */
  45
  46 /*
  47  * Dump the internal memory database to bootpd_dump.
  48  */
  49
  50 void
  51 dumptab(char *filename)
  52 {
  53         int n;
  54         struct host *hp;
  55         FILE *fp;
  56         time_t t;
  57         /* Print symbols in alphabetical order for reader's convenience. */
  58         static char legend[] = "#\n# Legend:\t(see bootptab.5)\n\
  59 #\tfirst field -- hostname (not indented)\n\
  60 #\tbf -- bootfile\n\
  61 #\tbs -- bootfile size in 512-octet blocks\n\
  62 #\tcs -- cookie servers\n\
  63 #\tdf -- dump file name\n\
  64 #\tdn -- domain name\n\
  65 #\tds -- domain name servers\n\
  66 #\tef -- extension file\n\
  67 #\tex -- exec file (YORK_EX_OPTION)\n\
  68 #\tgw -- gateways\n\
  69 #\tha -- hardware address\n\
  70 #\thd -- home directory for bootfiles\n\
  71 #\thn -- host name set for client\n\
  72 #\tht -- hardware type\n\
  73 #\tim -- impress servers\n\
  74 #\tip -- host IP address\n\
  75 #\tlg -- log servers\n\
  76 #\tlp -- LPR servers\n\
  77 #\tms -- message size\n\
  78 #\tmw -- min wait (secs)\n\
  79 #\tns -- IEN-116 name servers\n\
  80 #\tnt -- NTP servers (RFC 1129)\n\
  81 #\tra -- reply address override\n\
  82 #\trl -- resource location protocol servers\n\
  83 #\trp -- root path\n\
  84 #\tsa -- boot server address\n\
  85 #\tsm -- subnet mask\n\
  86 #\tsw -- swap server\n\
  87 #\ttc -- template host (points to similar host entry)\n\
  88 #\ttd -- TFTP directory\n\
  89 #\tto -- time offset (seconds)\n\
  90 #\tts -- time servers\n\
  91 #\tvm -- vendor magic number\n\
  92 #\tyd -- YP (NIS) domain\n\
  93 #\tys -- YP (NIS) servers\n\
  94 #\tTn -- generic option tag n\n\
  95 \n";
  96
  97         /*
  98          * Open bootpd.dump file.
  99          */
 100         if ((fp = fopen(filename, "w")) == NULL) {
 101                 report(LOG_ERR, "error opening \"%s\": %s",
 102                            filename, get_errmsg());
 103                 exit(1);
 104         }
 105         t = time(NULL);
 106         fprintf(fp, "\n# %s %s.%d\n", progname, VERSION, PATCHLEVEL);
 107         fprintf(fp, "# %s: dump of bootp server database.\n", filename);
 108         fprintf(fp, "# Dump taken %s", ctime(&t));
 109         fwrite(legend, 1, sizeof(legend) - 1, fp);
 110
 111         n = 0;
 112         for (hp = (struct host *) hash_FirstEntry(nmhashtable); hp != NULL;
 113                  hp = (struct host *) hash_NextEntry(nmhashtable)) {
 114                 dump_host(fp, hp);
 115                 fprintf(fp, "\n");
 116                 n++;
 117         }
 118         fclose(fp);
 119
 120         report(LOG_INFO, "dumped %d entries to \"%s\".", n, filename);
 121 }
 122 \f
 123
 124
 125 /*
 126  * Dump all the available information on the host pointed to by "hp".
 127  * The output is sent to the file pointed to by "fp".
 128  */
 129
 130 static void
 131 dump_host(FILE *fp, struct host *hp)
 132 {
 133         /* Print symbols in alphabetical order for reader's convenience. */
 134         if (hp) {
 135                 fprintf(fp, "%s:", (hp->hostname ?
 136                                                         hp->hostname->string : "?"));
 137                 if (hp->flags.bootfile) {
 138                         fprintf(fp, "\\\n\t:bf=%s:", hp->bootfile->string);
 139                 }
 140                 if (hp->flags.bootsize) {
 141                         fprintf(fp, "\\\n\t:bs=");
 142                         if (hp->flags.bootsize_auto) {
 143                                 fprintf(fp, "auto:");
 144                         } else {
 145                                 fprintf(fp, "%lu:", (u_long)hp->bootsize);
 146                         }
 147                 }
 148                 if (hp->flags.cookie_server) {
 149                         fprintf(fp, "\\\n\t:cs=");
 150                         list_ipaddresses(fp, hp->cookie_server);
 151                         fprintf(fp, ":");
 152                 }
 153                 if (hp->flags.dump_file) {
 154                         fprintf(fp, "\\\n\t:df=%s:", hp->dump_file->string);
 155                 }
 156                 if (hp->flags.domain_name) {
 157                         fprintf(fp, "\\\n\t:dn=%s:", hp->domain_name->string);
 158                 }
 159                 if (hp->flags.domain_server) {
 160                         fprintf(fp, "\\\n\t:ds=");
 161                         list_ipaddresses(fp, hp->domain_server);
 162                         fprintf(fp, ":");
 163                 }
 164                 if (hp->flags.exten_file) {
 165                         fprintf(fp, "\\\n\t:ef=%s:", hp->exten_file->string);
 166                 }
 167                 if (hp->flags.exec_file) {
 168                         fprintf(fp, "\\\n\t:ex=%s:", hp->exec_file->string);
 169                 }
 170                 if (hp->flags.gateway) {
 171                         fprintf(fp, "\\\n\t:gw=");
 172                         list_ipaddresses(fp, hp->gateway);
 173                         fprintf(fp, ":");
 174                 }
 175                 /* FdC: swap_server (see below) */
 176                 if (hp->flags.homedir) {
 177                         fprintf(fp, "\\\n\t:hd=%s:", hp->homedir->string);
 178                 }
 179                 /* FdC: dump_file (see above) */
 180                 /* FdC: domain_name (see above) */
 181                 /* FdC: root_path (see below) */
 182                 if (hp->flags.name_switch && hp->flags.send_name) {
 183                         fprintf(fp, "\\\n\t:hn:");
 184                 }
 185                 if (hp->flags.htype) {
 186                         int hlen = haddrlength(hp->htype);
 187                         fprintf(fp, "\\\n\t:ht=%u:", (unsigned) hp->htype);
 188                         if (hp->flags.haddr) {
 189                                 fprintf(fp, "ha=\"%s\":",
 190                                                 haddrtoa(hp->haddr, hlen));
 191                         }
 192                 }
 193                 if (hp->flags.impress_server) {
 194                         fprintf(fp, "\\\n\t:im=");
 195                         list_ipaddresses(fp, hp->impress_server);
 196                         fprintf(fp, ":");
 197                 }
 198                 /* NetBSD: swap_server (see below) */
 199                 if (hp->flags.iaddr) {
 200                         fprintf(fp, "\\\n\t:ip=%s:", inet_ntoa(hp->iaddr));
 201                 }
 202                 if (hp->flags.log_server) {
 203                         fprintf(fp, "\\\n\t:lg=");
 204                         list_ipaddresses(fp, hp->log_server);
 205                         fprintf(fp, ":");
 206                 }
 207                 if (hp->flags.lpr_server) {
 208                         fprintf(fp, "\\\n\t:lp=");
 209                         list_ipaddresses(fp, hp->lpr_server);
 210                         fprintf(fp, ":");
 211                 }
 212                 if (hp->flags.msg_size) {
 213                         fprintf(fp, "\\\n\t:ms=%lu:", (u_long)hp->msg_size);
 214                 }
 215                 if (hp->flags.min_wait) {
 216                         fprintf(fp, "\\\n\t:mw=%lu:", (u_long)hp->min_wait);
 217                 }
 218                 if (hp->flags.name_server) {
 219                         fprintf(fp, "\\\n\t:ns=");
 220                         list_ipaddresses(fp, hp->name_server);
 221                         fprintf(fp, ":");
 222                 }
 223                 if (hp->flags.ntp_server) {
 224                         fprintf(fp, "\\\n\t:nt=");
 225                         list_ipaddresses(fp, hp->ntp_server);
 226                         fprintf(fp, ":");
 227                 }
 228                 if (hp->flags.reply_addr) {
 229                         fprintf(fp, "\\\n\t:ra=%s:", inet_ntoa(hp->reply_addr));
 230                 }
 231                 if (hp->flags.rlp_server) {
 232                         fprintf(fp, "\\\n\t:rl=");
 233                         list_ipaddresses(fp, hp->rlp_server);
 234                         fprintf(fp, ":");
 235                 }
 236                 if (hp->flags.root_path) {
 237                         fprintf(fp, "\\\n\t:rp=%s:", hp->root_path->string);
 238                 }
 239                 if (hp->flags.bootserver) {
 240                         fprintf(fp, "\\\n\t:sa=%s:", inet_ntoa(hp->bootserver));
 241                 }
 242                 if (hp->flags.subnet_mask) {
 243                         fprintf(fp, "\\\n\t:sm=%s:", inet_ntoa(hp->subnet_mask));
 244                 }
 245                 if (hp->flags.swap_server) {
 246                         fprintf(fp, "\\\n\t:sw=%s:", inet_ntoa(hp->subnet_mask));
 247                 }
 248                 if (hp->flags.tftpdir) {
 249                         fprintf(fp, "\\\n\t:td=%s:", hp->tftpdir->string);
 250                 }
 251                 /* NetBSD: rootpath (see above) */
 252                 /* NetBSD: domainname (see above) */
 253                 /* NetBSD: dumpfile (see above) */
 254                 if (hp->flags.time_offset) {
 255                         fprintf(fp, "\\\n\t:to=%ld:", (long)hp->time_offset);
 256                 }
 257                 if (hp->flags.time_server) {
 258                         fprintf(fp, "\\\n\t:ts=");
 259                         list_ipaddresses(fp, hp->time_server);
 260                         fprintf(fp, ":");
 261                 }
 262                 if (hp->flags.vm_cookie) {
 263                         fprintf(fp, "\\\n\t:vm=");
 264                         if (!bcmp(hp->vm_cookie, vm_rfc1048, 4)) {
 265                                 fprintf(fp, "rfc1048:");
 266                         } else if (!bcmp(hp->vm_cookie, vm_cmu, 4)) {
 267                                 fprintf(fp, "cmu:");
 268                         } else {
 269                                 fprintf(fp, "%d.%d.%d.%d:",
 270                                                 (int) ((hp->vm_cookie)[0]),
 271                                                 (int) ((hp->vm_cookie)[1]),
 272                                                 (int) ((hp->vm_cookie)[2]),
 273                                                 (int) ((hp->vm_cookie)[3]));
 274                         }
 275                 }
 276                 if (hp->flags.nis_domain) {
 277                         fprintf(fp, "\\\n\t:yd=%s:",
 278                                         hp->nis_domain->string);
 279                 }
 280                 if (hp->flags.nis_server) {
 281                         fprintf(fp, "\\\n\t:ys=");
 282                         list_ipaddresses(fp, hp->nis_server);
 283                         fprintf(fp, ":");
 284                 }
 285                 /*
 286                  * XXX - Add new tags here (or above,
 287                  * so they print in alphabetical order).
 288                  */
 289
 290                 if (hp->flags.generic) {
 291                         dump_generic(fp, hp->generic);
 292                 }
 293         }
 294 }
 295 \f
 296
 297 static void
 298 dump_generic(FILE *fp, struct shared_bindata *generic)
 299 {
 300         u_char *bp = generic->data;
 301         u_char *ep = bp + generic->length;
 302         u_char tag;
 303         int len;
 304
 305         while (bp < ep) {
 306                 tag = *bp++;
 307                 if (tag == TAG_PAD)
 308                         continue;
 309                 if (tag == TAG_END)
 310                         return;
 311                 len = *bp++;
 312                 if (bp + len > ep) {
 313                         fprintf(fp, " #junk in generic! :");
 314                         return;
 315                 }
 316                 fprintf(fp, "\\\n\t:T%d=", tag);
 317                 while (len) {
 318                         fprintf(fp, "%02X", *bp);
 319                         bp++;
 320                         len--;
 321                         if (len)
 322                                 fprintf(fp, ".");
 323                 }
 324                 fprintf(fp, ":");
 325         }
 326 }
 327 \f
 328
 329
 330 /*
 331  * Dump an entire struct in_addr_list of IP addresses to the indicated file.
 332  *
 333  * The addresses are printed in standard ASCII "dot" notation and separated
 334  * from one another by a single space.  A single leading space is also
 335  * printed before the first adddress.
 336  *
 337  * Null lists produce no output (and no error).
 338  */
 339
 340 static void
 341 list_ipaddresses(FILE *fp, struct in_addr_list *ipptr)
 342 {
 343         unsigned count;
 344         struct in_addr *addrptr;
 345
 346         if (ipptr) {
 347                 count = ipptr->addrcount;
 348                 addrptr = ipptr->addr;
 349                 while (count > 0) {
 350                         fprintf(fp, "%s", inet_ntoa(*addrptr++));
 351                         count--;
 352                         if (count)
 353                                 fprintf(fp, ", ");
 354                 }
 355         }
 356 }
 357
 358 #endif /* DEBUG */