source3/nmbd/nmbd_sendannounce.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    NBT netbios routines and daemon - version 2
   4    Copyright (C) Andrew Tridgell 1994-1998
   5    Copyright (C) Luke Kenneth Casson Leighton 1994-1998
   6    Copyright (C) Jeremy Allison 1994-1998
   7
   8    SMB Version handling
   9    Copyright (C) John H Terpstra 1995-1998
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 */
  25
  26 #include "includes.h"
  27 #include "../librpc/gen_ndr/svcctl.h"
  28 #include "nmbd/nmbd.h"
  29
  30 extern int  updatecount;
  31 extern bool found_lm_clients;
  32
  33 /****************************************************************************
  34  Send a browser reset packet.
  35 **************************************************************************/
  36
  37 void send_browser_reset(int reset_type, const char *to_name, int to_type, struct in_addr to_ip)
  38 {
  39         char outbuf[1024];
  40         char *p;
  41
  42         DEBUG(3,("send_browser_reset: sending reset request type %d to %s<%02x> IP %s.\n",
  43                 reset_type, to_name, to_type, inet_ntoa(to_ip) ));
  44
  45         memset(outbuf,'\0',sizeof(outbuf));
  46         p = outbuf;
  47         SCVAL(p,0,ANN_ResetBrowserState);
  48         p++;
  49         SCVAL(p,0,reset_type);
  50         p++;
  51
  52         send_mailslot(True, BROWSE_MAILSLOT, outbuf,PTR_DIFF(p,outbuf),
  53                 lp_netbios_name(), 0x0, to_name, to_type, to_ip,
  54                 FIRST_SUBNET->myip, DGRAM_PORT);
  55 }
  56
  57 /****************************************************************************
  58   Broadcast a packet to the local net requesting that all servers in this
  59   workgroup announce themselves to us.
  60   **************************************************************************/
  61
  62 void broadcast_announce_request(struct subnet_record *subrec, struct work_record *work)
  63 {
  64         char outbuf[1024];
  65         char *p;
  66
  67         work->needannounce = True;
  68
  69         DEBUG(3,("broadcast_announce_request: sending announce request for workgroup %s \
  70 to subnet %s\n", work->work_group, subrec->subnet_name));
  71
  72         memset(outbuf,'\0',sizeof(outbuf));
  73         p = outbuf;
  74         SCVAL(p,0,ANN_AnnouncementRequest);
  75         p++;
  76
  77         SCVAL(p,0,work->token); /* (local) Unique workgroup token id. */
  78         p++;
  79         p +=  push_string_check(p+1, lp_netbios_name(), 15, STR_ASCII|STR_UPPER|STR_TERMINATE);
  80
  81         send_mailslot(False, BROWSE_MAILSLOT, outbuf,PTR_DIFF(p,outbuf),
  82                 lp_netbios_name(), 0x0, work->work_group,0x1e, subrec->bcast_ip,
  83                 subrec->myip, DGRAM_PORT);
  84 }
  85
  86 /****************************************************************************
  87   Broadcast an announcement.
  88   **************************************************************************/
  89
  90 static void send_announcement(struct subnet_record *subrec, int announce_type,
  91                               const char *from_name, const char *to_name, int to_type, struct in_addr to_ip,
  92                               time_t announce_interval,
  93                               const char *server_name, int server_type, const char *server_comment)
  94 {
  95         char outbuf[1024];
  96         unstring upper_server_name;
  97         char *p;
  98
  99         memset(outbuf,'\0',sizeof(outbuf));
 100         p = outbuf+1;
 101
 102         SCVAL(outbuf,0,announce_type);
 103
 104         /* Announcement parameters. */
 105         SCVAL(p,0,updatecount);
 106         SIVAL(p,1,announce_interval*1000); /* Milliseconds - despite the spec. */
 107
 108         strlcpy(upper_server_name, server_name ? server_name : "", sizeof(upper_server_name));
 109         if (!strupper_m(upper_server_name)) {
 110                 DEBUG(2,("strupper_m %s failed\n", upper_server_name));
 111                 return;
 112         }
 113         push_string_check(p+5, upper_server_name, 16, STR_ASCII|STR_TERMINATE);
 114
 115         SCVAL(p,21,SAMBA_MAJOR_NBT_ANNOUNCE_VERSION); /* Major version. */
 116         SCVAL(p,22,SAMBA_MINOR_NBT_ANNOUNCE_VERSION); /* Minor version. */
 117
 118         SIVAL(p,23,server_type & ~SV_TYPE_LOCAL_LIST_ONLY);
 119         /* Browse version: got from NT/AS 4.00  - Value defined in smb.h (JHT). */
 120         SSVAL(p,27,BROWSER_ELECTION_VERSION);
 121         SSVAL(p,29,BROWSER_CONSTANT); /* Browse signature. */
 122
 123         p += 31 + push_string_check(p+31, server_comment, sizeof(outbuf) - (p + 31 - outbuf), STR_ASCII|STR_TERMINATE);
 124
 125         send_mailslot(False,BROWSE_MAILSLOT, outbuf, PTR_DIFF(p,outbuf),
 126                         from_name, 0x0, to_name, to_type, to_ip, subrec->myip,
 127                         DGRAM_PORT);
 128 }
 129
 130 /****************************************************************************
 131   Broadcast a LanMan announcement.
 132 **************************************************************************/
 133
 134 static void send_lm_announcement(struct subnet_record *subrec, int announce_type,
 135                               char *from_name, char *to_name, int to_type, struct in_addr to_ip,
 136                               time_t announce_interval,
 137                               char *server_name, int server_type, char *server_comment)
 138 {
 139         char outbuf[1024];
 140         char *p=outbuf;
 141
 142         memset(outbuf,'\0',sizeof(outbuf));
 143
 144         SSVAL(p,0,announce_type);
 145         SIVAL(p,2,server_type & ~SV_TYPE_LOCAL_LIST_ONLY);
 146         SCVAL(p,6,SAMBA_MAJOR_NBT_ANNOUNCE_VERSION); /* Major version. */
 147         SCVAL(p,7,SAMBA_MINOR_NBT_ANNOUNCE_VERSION); /* Minor version. */
 148         SSVAL(p,8,announce_interval);            /* In seconds - according to spec. */
 149
 150         p += 10;
 151         p += push_string_check(p, server_name, 15, STR_ASCII|STR_UPPER|STR_TERMINATE);
 152         p += push_string_check(p, server_comment, sizeof(outbuf)- (p - outbuf), STR_ASCII|STR_UPPER|STR_TERMINATE);
 153
 154         send_mailslot(False,LANMAN_MAILSLOT, outbuf, PTR_DIFF(p,outbuf),
 155                 from_name, 0x0, to_name, to_type, to_ip, subrec->myip,
 156                 DGRAM_PORT);
 157 }
 158
 159 /****************************************************************************
 160  We are a local master browser. Announce this to WORKGROUP<1e>.
 161 ****************************************************************************/
 162
 163 static void send_local_master_announcement(struct subnet_record *subrec, struct work_record *work,
 164                                            struct server_record *servrec)
 165 {
 166         /* Ensure we don't have the prohibited bit set. */
 167         uint32_t type = servrec->serv.type & ~SV_TYPE_LOCAL_LIST_ONLY;
 168
 169         DEBUG(3,("send_local_master_announcement: type %x for name %s on subnet %s for workgroup %s\n",
 170                 type, lp_netbios_name(), subrec->subnet_name, work->work_group));
 171
 172         send_announcement(subrec, ANN_LocalMasterAnnouncement,
 173                         lp_netbios_name(),                 /* From nbt name. */
 174                         work->work_group, 0x1e,          /* To nbt name. */
 175                         subrec->bcast_ip,                /* To ip. */
 176                         work->announce_interval,         /* Time until next announce. */
 177                         lp_netbios_name(),                 /* Name to announce. */
 178                         type,                            /* Type field. */
 179                         servrec->serv.comment);
 180 }
 181
 182 /****************************************************************************
 183  Announce the workgroup WORKGROUP to MSBROWSE<01>.
 184 ****************************************************************************/
 185
 186 static void send_workgroup_announcement(struct subnet_record *subrec, struct work_record *work)
 187 {
 188         DEBUG(3,("send_workgroup_announcement: on subnet %s for workgroup %s\n",
 189                 subrec->subnet_name, work->work_group));
 190
 191         send_announcement(subrec, ANN_DomainAnnouncement,
 192                         lp_netbios_name(),                 /* From nbt name. */
 193                         MSBROWSE, 0x1,                   /* To nbt name. */
 194                         subrec->bcast_ip,                /* To ip. */
 195                         work->announce_interval,         /* Time until next announce. */
 196                         work->work_group,                /* Name to announce. */
 197                         SV_TYPE_DOMAIN_ENUM|SV_TYPE_NT,  /* workgroup announce flags. */
 198                         lp_netbios_name());                /* From name as comment. */
 199 }
 200
 201 /****************************************************************************
 202  Announce the given host to WORKGROUP<1d>.
 203 ****************************************************************************/
 204
 205 static void send_host_announcement(struct subnet_record *subrec, struct work_record *work,
 206                                    struct server_record *servrec)
 207 {
 208         /* Ensure we don't have the prohibited bits set. */
 209         uint32_t type = servrec->serv.type & ~SV_TYPE_LOCAL_LIST_ONLY;
 210
 211         DEBUG(3,("send_host_announcement: type %x for host %s on subnet %s for workgroup %s\n",
 212                 type, servrec->serv.name, subrec->subnet_name, work->work_group));
 213
 214         send_announcement(subrec, ANN_HostAnnouncement,
 215                         servrec->serv.name,              /* From nbt name. */
 216                         work->work_group, 0x1d,          /* To nbt name. */
 217                         subrec->bcast_ip,                /* To ip. */
 218                         work->announce_interval,         /* Time until next announce. */
 219                         servrec->serv.name,              /* Name to announce. */
 220                         type,                            /* Type field. */
 221                         servrec->serv.comment);
 222 }
 223
 224 /****************************************************************************
 225  Announce the given LanMan host
 226 ****************************************************************************/
 227
 228 static void send_lm_host_announcement(struct subnet_record *subrec, struct work_record *work,
 229                                    struct server_record *servrec, int lm_interval)
 230 {
 231         /* Ensure we don't have the prohibited bits set. */
 232         uint32_t type = servrec->serv.type & ~SV_TYPE_LOCAL_LIST_ONLY;
 233
 234         DEBUG(3,("send_lm_host_announcement: type %x for host %s on subnet %s for workgroup %s, ttl: %d\n",
 235                 type, servrec->serv.name, subrec->subnet_name, work->work_group, lm_interval));
 236
 237         send_lm_announcement(subrec, ANN_HostAnnouncement,
 238                         servrec->serv.name,              /* From nbt name. */
 239                         work->work_group, 0x00,          /* To nbt name. */
 240                         subrec->bcast_ip,                /* To ip. */
 241                         lm_interval,                     /* Time until next announce. */
 242                         servrec->serv.name,              /* Name to announce (fstring not netbios name struct). */
 243                         type,                            /* Type field. */
 244                         servrec->serv.comment);
 245 }
 246
 247 /****************************************************************************
 248   Announce a server record.
 249   ****************************************************************************/
 250
 251 static void announce_server(struct subnet_record *subrec, struct work_record *work,
 252                      struct server_record *servrec)
 253 {
 254         /* Only do domain announcements if we are a master and it's
 255                 our primary name we're being asked to announce. */
 256
 257         if (AM_LOCAL_MASTER_BROWSER(work) && strequal(lp_netbios_name(),servrec->serv.name)) {
 258                 send_local_master_announcement(subrec, work, servrec);
 259                 send_workgroup_announcement(subrec, work);
 260         } else {
 261                 send_host_announcement(subrec, work, servrec);
 262         }
 263 }
 264
 265 /****************************************************************************
 266   Go through all my registered names on all broadcast subnets and announce
 267   them if the timeout requires it.
 268   **************************************************************************/
 269
 270 void announce_my_server_names(time_t t)
 271 {
 272         struct subnet_record *subrec;
 273
 274         for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
 275                 struct work_record *work = find_workgroup_on_subnet(subrec, lp_workgroup());
 276
 277                 if(work) {
 278                         struct server_record *servrec;
 279
 280                         if (work->needannounce) {
 281                                 /* Drop back to a max 3 minute announce. This is to prevent a
 282                                         single lost packet from breaking things for too long. */
 283
 284                                 work->announce_interval = MIN(work->announce_interval,
 285                                                         CHECK_TIME_MIN_HOST_ANNCE*60);
 286                                 work->lastannounce_time = t - (work->announce_interval+1);
 287                                 work->needannounce = False;
 288                         }
 289
 290                         /* Announce every minute at first then progress to every 12 mins */
 291                         if ((t - work->lastannounce_time) < work->announce_interval)
 292                                 continue;
 293
 294                         if (work->announce_interval < (CHECK_TIME_MAX_HOST_ANNCE * 60))
 295                                 work->announce_interval += 60;
 296
 297                         work->lastannounce_time = t;
 298
 299                         for (servrec = work->serverlist; servrec; servrec = servrec->next) {
 300                                 if (is_myname(servrec->serv.name))
 301                                         announce_server(subrec, work, servrec);
 302                         }
 303                 } /* if work */
 304         } /* for subrec */
 305 }
 306
 307 /****************************************************************************
 308   Go through all my registered names on all broadcast subnets and announce
 309   them as a LanMan server if the timeout requires it.
 310 **************************************************************************/
 311
 312 void announce_my_lm_server_names(time_t t)
 313 {
 314         struct subnet_record *subrec;
 315         static time_t last_lm_announce_time=0;
 316         int announce_interval = lp_lm_interval();
 317         int lm_announce = lp_lm_announce();
 318
 319         if ((announce_interval <= 0) || (lm_announce <= 0)) {
 320                 /* user absolutely does not want LM announcements to be sent. */
 321                 return;
 322         }
 323
 324         if ((lm_announce >= 2) && (!found_lm_clients)) {
 325                 /* has been set to 2 (Auto) but no LM clients detected (yet). */
 326                 return;
 327         }
 328
 329         /* Otherwise: must have been set to 1 (Yes), or LM clients *have*
 330                 been detected. */
 331
 332         for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
 333                 struct work_record *work = find_workgroup_on_subnet(subrec, lp_workgroup());
 334
 335                 if(work) {
 336                         struct server_record *servrec;
 337
 338                         if (last_lm_announce_time && ((t - last_lm_announce_time) < announce_interval ))
 339                                 continue;
 340
 341                         last_lm_announce_time = t;
 342
 343                         for (servrec = work->serverlist; servrec; servrec = servrec->next) {
 344                                 if (is_myname(servrec->serv.name))
 345                                         /* skipping equivalent of announce_server() */
 346                                         send_lm_host_announcement(subrec, work, servrec, announce_interval);
 347                         }
 348                 } /* if work */
 349         } /* for subrec */
 350 }
 351
 352 /* Announce timer. Moved into global static so it can be reset
 353    when a machine becomes a local master browser. */
 354 static time_t announce_timer_last=0;
 355
 356 /****************************************************************************
 357  Reset the announce_timer so that a local master browser announce will be done
 358  immediately.
 359  ****************************************************************************/
 360
 361 void reset_announce_timer(void)
 362 {
 363         announce_timer_last = time(NULL) - (CHECK_TIME_MST_ANNOUNCE * 60);
 364 }
 365
 366 /****************************************************************************
 367   Announce myself as a local master browser to a domain master browser.
 368   **************************************************************************/
 369
 370 void announce_myself_to_domain_master_browser(time_t t)
 371 {
 372         struct subnet_record *subrec;
 373         struct work_record *work;
 374
 375         if(!we_are_a_wins_client()) {
 376                 DEBUG(10,("announce_myself_to_domain_master_browser: no unicast subnet, ignoring.\n"));
 377                 return;
 378         }
 379
 380         if (!announce_timer_last)
 381                 announce_timer_last = t;
 382
 383         if ((t-announce_timer_last) < (CHECK_TIME_MST_ANNOUNCE * 60)) {
 384                 DEBUG(10,("announce_myself_to_domain_master_browser: t (%d) - last(%d) < %d\n",
 385                         (int)t, (int)announce_timer_last,
 386                         CHECK_TIME_MST_ANNOUNCE * 60 ));
 387                 return;
 388         }
 389
 390         announce_timer_last = t;
 391
 392         /* Look over all our broadcast subnets to see if any of them
 393                 has the state set as local master browser. */
 394
 395         for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
 396                 for (work = subrec->workgrouplist; work; work = work->next) {
 397                         if (AM_LOCAL_MASTER_BROWSER(work)) {
 398                                 DEBUG(4,( "announce_myself_to_domain_master_browser: I am a local master browser for \
 399 workgroup %s on subnet %s\n", work->work_group, subrec->subnet_name));
 400
 401                                 /* Look in nmbd_browsersync.c for the rest of this code. */
 402                                 announce_and_sync_with_domain_master_browser(subrec, work);
 403                         }
 404                 }
 405         }
 406 }
 407
 408 /****************************************************************************
 409 Announce all samba's server entries as 'gone'.
 410 This must *only* be called on shutdown.
 411 ****************************************************************************/
 412
 413 void announce_my_servers_removed(void)
 414 {
 415         int announce_interval = lp_lm_interval();
 416         int lm_announce = lp_lm_announce();
 417         struct subnet_record *subrec;
 418
 419         for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
 420                 struct work_record *work;
 421                 for (work = subrec->workgrouplist; work; work = work->next) {
 422                         struct server_record *servrec;
 423
 424                         work->announce_interval = 0;
 425                         for (servrec = work->serverlist; servrec; servrec = servrec->next) {
 426                                 if (!is_myname(servrec->serv.name))
 427                                         continue;
 428                                 servrec->serv.type = 0;
 429                                 if(AM_LOCAL_MASTER_BROWSER(work))
 430                                         send_local_master_announcement(subrec, work, servrec);
 431                                 send_host_announcement(subrec, work, servrec);
 432
 433                                 if ((announce_interval <= 0) || (lm_announce <= 0)) {
 434                                         /* user absolutely does not want LM announcements to be sent. */
 435                                         continue;
 436                                 }
 437
 438                                 if ((lm_announce >= 2) && (!found_lm_clients)) {
 439                                         /* has been set to 2 (Auto) but no LM clients detected (yet). */
 440                                         continue;
 441                                 }
 442
 443                                 /*
 444                                  * lm announce was set or we have seen lm announcements, so do
 445                                  * a lm announcement of host removed.
 446                                  */
 447
 448                                 send_lm_host_announcement(subrec, work, servrec, 0);
 449                         }
 450                 }
 451         }
 452 }
 453
 454 /****************************************************************************
 455   Do all the "remote" announcements. These are used to put ourselves
 456   on a remote browse list. They are done blind, no checking is done to
 457   see if there is actually a local master browser at the other end.
 458   **************************************************************************/
 459
 460 void announce_remote(time_t t)
 461 {
 462         char *s;
 463         const char *ptr;
 464         static time_t last_time = 0;
 465         char *s2;
 466         struct in_addr addr;
 467         char *comment;
 468         int stype = lp_default_server_announce();
 469         TALLOC_CTX *frame = NULL;
 470
 471         if (last_time && (t < (last_time + REMOTE_ANNOUNCE_INTERVAL)))
 472                 return;
 473
 474         last_time = t;
 475
 476         s = lp_remote_announce(talloc_tos());
 477         if (!*s)
 478                 return;
 479
 480         comment = string_truncate(lp_server_string(talloc_tos()),
 481                                   MAX_SERVER_STRING_LENGTH);
 482
 483         frame = talloc_stackframe();
 484         for (ptr=s; next_token_talloc(frame,&ptr,&s2,NULL); ) {
 485                 /* The entries are of the form a.b.c.d/WORKGROUP with
 486                                 WORKGROUP being optional */
 487                 const char *wgroup;
 488                 char *pwgroup;
 489                 int i;
 490
 491                 pwgroup = strchr_m(s2,'/');
 492                 if (pwgroup)
 493                         *pwgroup++ = 0;
 494                 if (!pwgroup || !*pwgroup)
 495                         wgroup = lp_workgroup();
 496                 else
 497                         wgroup = pwgroup;
 498
 499                 addr = interpret_addr2(s2);
 500
 501                 /* Announce all our names including aliases */
 502                 /* Give the ip address as the address of our first
 503                                 broadcast subnet. */
 504
 505                 for(i=0; my_netbios_names(i); i++) {
 506                         const char *name = my_netbios_names(i);
 507
 508                         DEBUG(5,("announce_remote: Doing remote announce for server %s to IP %s.\n",
 509                                 name, inet_ntoa(addr) ));
 510
 511                         send_announcement(FIRST_SUBNET, ANN_HostAnnouncement,
 512                                                 name,                      /* From nbt name. */
 513                                                 wgroup, 0x1d,              /* To nbt name. */
 514                                                 addr,                      /* To ip. */
 515                                                 REMOTE_ANNOUNCE_INTERVAL,  /* Time until next announce. */
 516                                                 name,                      /* Name to announce. */
 517                                                 stype,                     /* Type field. */
 518                                                 comment);
 519                 }
 520         }
 521         TALLOC_FREE(frame);
 522 }
 523
 524 /****************************************************************************
 525   Implement the 'remote browse sync' feature Andrew added.
 526   These are used to put our browse lists into remote browse lists.
 527 **************************************************************************/
 528
 529 void browse_sync_remote(time_t t)
 530 {
 531         char *s;
 532         const char *ptr;
 533         static time_t last_time = 0;
 534         char *s2;
 535         struct in_addr addr;
 536         struct work_record *work;
 537         char outbuf[1024];
 538         char *p;
 539         unstring myname;
 540         TALLOC_CTX *frame = NULL;
 541
 542         if (last_time && (t < (last_time + REMOTE_ANNOUNCE_INTERVAL)))
 543                 return;
 544
 545         last_time = t;
 546
 547         s = lp_remote_browse_sync(talloc_tos());
 548         if (!*s)
 549                 return;
 550
 551         /*
 552          * We only do this if we are the local master browser
 553          * for our workgroup on the firsst subnet.
 554          */
 555
 556         if((work = find_workgroup_on_subnet(FIRST_SUBNET, lp_workgroup())) == NULL) {
 557                 DEBUG(0,("browse_sync_remote: Cannot find workgroup %s on subnet %s\n",
 558                         lp_workgroup(), FIRST_SUBNET->subnet_name ));
 559                 return;
 560         }
 561
 562         if(!AM_LOCAL_MASTER_BROWSER(work)) {
 563                 DEBUG(5,("browse_sync_remote: We can only do this if we are a local master browser \
 564 for workgroup %s on subnet %s.\n", lp_workgroup(), FIRST_SUBNET->subnet_name ));
 565                 return;
 566         }
 567
 568         memset(outbuf,'\0',sizeof(outbuf));
 569         p = outbuf;
 570         SCVAL(p,0,ANN_MasterAnnouncement);
 571         p++;
 572
 573         unstrcpy(myname, lp_netbios_name());
 574         if (!strupper_m(myname)) {
 575                 DEBUG(2,("strupper_m %s failed\n", myname));
 576                 return;
 577         }
 578         myname[15]='\0';
 579         push_ascii(p, myname, sizeof(outbuf)-PTR_DIFF(p,outbuf)-1, STR_TERMINATE);
 580
 581         p = skip_string(outbuf,sizeof(outbuf),p);
 582
 583         frame = talloc_stackframe();
 584         for (ptr=s; next_token_talloc(frame,&ptr,&s2,NULL); ) {
 585                 /* The entries are of the form a.b.c.d */
 586                 addr = interpret_addr2(s2);
 587
 588                 DEBUG(5,("announce_remote: Doing remote browse sync announce for server %s to IP %s.\n",
 589                         lp_netbios_name(), inet_ntoa(addr) ));
 590
 591                 send_mailslot(True, BROWSE_MAILSLOT, outbuf,PTR_DIFF(p,outbuf),
 592                         lp_netbios_name(), 0x0, "*", 0x0, addr, FIRST_SUBNET->myip, DGRAM_PORT);
 593         }
 594         TALLOC_FREE(frame);
 595 }