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
8
This program is free software; you can redistribute it and/or modify
9
it under the terms of the GNU General Public License as published by
10
the Free Software Foundation; either version 3 of the License, or
11
(at your option) any later version.
13
This program is distributed in the hope that it will be useful,
14
but WITHOUT ANY WARRANTY; without even the implied warranty of
15
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16
GNU General Public License for more details.
18
You should have received a copy of the GNU General Public License
19
along with this program. If not, see <http://www.gnu.org/licenses/>.
25
extern bool found_lm_clients;
29
/* XXXX note: This function is currently unsuitable for use, as it
30
does not properly check that a server is in a fit state to become
31
a backup browser before asking it to be one.
32
The code is left here to be worked on at a later date.
35
/****************************************************************************
36
Tell a server to become a backup browser
37
**************************************************************************/
39
void tell_become_backup(void)
41
struct subnet_record *subrec;
42
for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec))
44
struct work_record *work;
45
for (work = subrec->workgrouplist; work; work = work->next)
47
struct server_record *servrec;
51
for (servrec = work->serverlist; servrec; servrec = servrec->next)
55
if (is_myname(servrec->serv.name))
58
if (servrec->serv.type & SV_TYPE_BACKUP_BROWSER)
64
if (servrec->serv.type & SV_TYPE_MASTER_BROWSER)
67
if (!(servrec->serv.type & SV_TYPE_POTENTIAL_BROWSER))
70
DEBUG(3,("num servers: %d num backups: %d\n",
71
num_servers, num_backups));
73
/* make first server a backup server. thereafter make every
74
tenth server a backup server */
75
if (num_backups != 0 && (num_servers+9) / num_backups > 10)
78
DEBUG(2,("sending become backup to %s %s for %s\n",
79
servrec->serv.name, inet_ntoa(subrec->bcast_ip),
82
/* type 11 request from MYNAME(20) to WG(1e) for SERVER */
83
do_announce_request(servrec->serv.name, work->work_group,
84
ANN_BecomeBackup, 0x20, 0x1e, subrec->bcast_ip);
91
/*******************************************************************
92
Process an incoming host announcement packet.
93
*******************************************************************/
95
void process_host_announce(struct subnet_record *subrec, struct packet_struct *p, char *buf)
97
struct dgram_packet *dgram = &p->packet.dgram;
98
int ttl = IVAL(buf,1)/1000;
99
unstring announce_name;
100
uint32 servertype = IVAL(buf,23);
102
struct work_record *work;
103
struct server_record *servrec;
105
unstring source_name;
107
START_PROFILE(host_announce);
109
pull_ascii_fstring(comment, buf+31);
111
pull_ascii_nstring(announce_name, sizeof(announce_name), buf+5);
112
pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
114
DEBUG(3,("process_host_announce: from %s<%02x> IP %s to \
115
%s for server %s.\n", source_name, source_name[15], inet_ntoa(p->ip),
116
nmb_namestr(&dgram->dest_name),announce_name));
118
DEBUG(5,("process_host_announce: ttl=%d server type=%08x comment=%s\n",
119
ttl, servertype,comment));
121
/* Filter servertype to remove impossible bits. */
122
servertype &= ~(SV_TYPE_LOCAL_LIST_ONLY|SV_TYPE_DOMAIN_ENUM);
124
/* A host announcement must be sent to the name WORKGROUP<1d>. */
125
if(dgram->dest_name.name_type != 0x1d) {
126
DEBUG(2,("process_host_announce: incorrect name type for destination from IP %s \
127
(was %02x) should be 0x1d. Allowing packet anyway.\n",
128
inet_ntoa(p->ip), dgram->dest_name.name_type));
129
/* Change it so it was. */
130
dgram->dest_name.name_type = 0x1d;
133
/* For a host announce the workgroup name is the destination name. */
134
pull_ascii_nstring(work_name, sizeof(work_name), dgram->dest_name.name);
137
* Syntax servers version 5.1 send HostAnnounce packets to
138
* *THE WRONG NAME*. They send to LOCAL_MASTER_BROWSER_NAME<00>
139
* instead of WORKGROUP<1d> name. So to fix this we check if
140
* the workgroup name is our own name, and if so change it
141
* to be our primary workgroup name.
144
if(strequal(work_name, global_myname()))
145
unstrcpy(work_name,lp_workgroup());
148
* We are being very agressive here in adding a workgroup
149
* name on the basis of a host announcing itself as being
150
* in that workgroup. Maybe we should wait for the workgroup
151
* announce instead ? JRA.
154
work = find_workgroup_on_subnet(subrec, work_name);
156
if(servertype != 0) {
158
/* We have no record of this workgroup. Add it. */
159
if((work = create_workgroup_on_subnet(subrec, work_name, ttl))==NULL)
163
if((servrec = find_server_in_workgroup( work, announce_name))==NULL) {
164
/* If this server is not already in the workgroup, add it. */
165
create_server_on_workgroup(work, announce_name,
166
servertype|SV_TYPE_LOCAL_LIST_ONLY,
169
/* Update the record. */
170
servrec->serv.type = servertype|SV_TYPE_LOCAL_LIST_ONLY;
171
update_server_ttl( servrec, ttl);
172
fstrcpy(servrec->serv.comment,comment);
176
* This server is announcing it is going down. Remove it from the
179
if(!is_myname(announce_name) && (work != NULL) &&
180
((servrec = find_server_in_workgroup( work, announce_name))!=NULL)) {
181
remove_server_from_workgroup( work, servrec);
185
subrec->work_changed = True;
188
END_PROFILE(host_announce);
191
/*******************************************************************
192
Process an incoming WORKGROUP announcement packet.
193
*******************************************************************/
195
void process_workgroup_announce(struct subnet_record *subrec, struct packet_struct *p, char *buf)
197
struct dgram_packet *dgram = &p->packet.dgram;
198
int ttl = IVAL(buf,1)/1000;
199
unstring workgroup_announce_name;
200
unstring master_name;
201
uint32 servertype = IVAL(buf,23);
202
struct work_record *work;
203
unstring source_name;
206
START_PROFILE(workgroup_announce);
208
pull_ascii_nstring(workgroup_announce_name,sizeof(workgroup_announce_name),buf+5);
209
pull_ascii_nstring(master_name,sizeof(master_name),buf+31);
210
pull_ascii_nstring(source_name,sizeof(source_name),dgram->source_name.name);
211
pull_ascii_nstring(dest_name,sizeof(dest_name),dgram->dest_name.name);
213
DEBUG(3,("process_workgroup_announce: from %s<%02x> IP %s to \
214
%s for workgroup %s.\n", source_name, source_name[15], inet_ntoa(p->ip),
215
nmb_namestr(&dgram->dest_name),workgroup_announce_name));
217
DEBUG(5,("process_workgroup_announce: ttl=%d server type=%08x master browser=%s\n",
218
ttl, servertype, master_name));
220
/* Workgroup announcements must only go to the MSBROWSE name. */
221
if (!strequal(dest_name, MSBROWSE) || (dgram->dest_name.name_type != 0x1)) {
222
DEBUG(0,("process_workgroup_announce: from IP %s should be to __MSBROWSE__<0x01> not %s\n",
223
inet_ntoa(p->ip), nmb_namestr(&dgram->dest_name)));
227
if ((work = find_workgroup_on_subnet(subrec, workgroup_announce_name))==NULL) {
228
/* We have no record of this workgroup. Add it. */
229
if((work = create_workgroup_on_subnet(subrec, workgroup_announce_name, ttl))==NULL)
232
/* Update the workgroup death_time. */
233
update_workgroup_ttl(work, ttl);
236
if(*work->local_master_browser_name == '\0') {
237
/* Set the master browser name. */
238
set_workgroup_local_master_browser_name( work, master_name );
241
subrec->work_changed = True;
245
END_PROFILE(workgroup_announce);
248
/*******************************************************************
249
Process an incoming local master browser announcement packet.
250
*******************************************************************/
252
void process_local_master_announce(struct subnet_record *subrec, struct packet_struct *p, char *buf)
254
struct dgram_packet *dgram = &p->packet.dgram;
255
int ttl = IVAL(buf,1)/1000;
256
unstring server_name;
257
uint32 servertype = IVAL(buf,23);
260
struct work_record *work = NULL;
261
struct server_record *servrec;
262
unstring source_name;
264
START_PROFILE(local_master_announce);
266
pull_ascii_nstring(server_name,sizeof(server_name),buf+5);
267
pull_ascii_fstring(comment, buf+31);
268
pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
269
pull_ascii_nstring(work_name, sizeof(work_name), dgram->dest_name.name);
271
DEBUG(3,("process_local_master_announce: from %s<%02x> IP %s to \
272
%s for server %s.\n", source_name, source_name[15], inet_ntoa(p->ip),
273
nmb_namestr(&dgram->dest_name),server_name));
275
DEBUG(5,("process_local_master_announce: ttl=%d server type=%08x comment=%s\n",
276
ttl, servertype, comment));
278
/* A local master announcement must be sent to the name WORKGROUP<1e>. */
279
if(dgram->dest_name.name_type != 0x1e) {
280
DEBUG(0,("process_local_master_announce: incorrect name type for destination from IP %s \
281
(was %02x) should be 0x1e. Ignoring packet.\n",
282
inet_ntoa(p->ip), dgram->dest_name.name_type));
286
/* Filter servertype to remove impossible bits. */
287
servertype &= ~(SV_TYPE_LOCAL_LIST_ONLY|SV_TYPE_DOMAIN_ENUM);
289
/* For a local master announce the workgroup name is the destination name. */
291
if ((work = find_workgroup_on_subnet(subrec, work_name))==NULL) {
292
/* Don't bother adding if it's a local master release announce. */
296
/* We have no record of this workgroup. Add it. */
297
if((work = create_workgroup_on_subnet(subrec, work_name, ttl))==NULL)
301
/* If we think we're the local master browser for this workgroup,
302
we should never have got this packet. We don't see our own
305
if(AM_LOCAL_MASTER_BROWSER(work)) {
306
DEBUG(0,("process_local_master_announce: Server %s at IP %s is announcing itself as \
307
a local master browser for workgroup %s and we think we are master. Forcing election.\n",
308
server_name, inet_ntoa(p->ip), work_name));
310
/* Samba nmbd versions 1.9.17 to 1.9.17p4 have a bug in that when
311
they have become a local master browser once, they will never
312
stop sending local master announcements. To fix this we send
313
them a reset browser packet, with level 0x2 on the __SAMBA__
314
name that only they should be listening to. */
316
send_browser_reset( 0x2, "__SAMBA__" , 0x20, p->ip);
318
/* We should demote ourself and force an election. */
320
unbecome_local_master_browser( subrec, work, True);
322
/* The actual election requests are handled in nmbd_election.c */
326
/* Find the server record on this workgroup. If it doesn't exist, add it. */
328
if(servertype != 0) {
329
if((servrec = find_server_in_workgroup( work, server_name))==NULL) {
330
/* If this server is not already in the workgroup, add it. */
331
create_server_on_workgroup(work, server_name,
332
servertype|SV_TYPE_LOCAL_LIST_ONLY,
335
/* Update the record. */
336
servrec->serv.type = servertype|SV_TYPE_LOCAL_LIST_ONLY;
337
update_server_ttl(servrec, ttl);
338
fstrcpy(servrec->serv.comment,comment);
341
set_workgroup_local_master_browser_name( work, server_name );
344
* This server is announcing it is going down. Remove it from the
347
if(!is_myname(server_name) &&
348
((servrec = find_server_in_workgroup( work, server_name))!=NULL)) {
349
remove_server_from_workgroup( work, servrec);
353
subrec->work_changed = True;
356
END_PROFILE(local_master_announce);
359
/*******************************************************************
360
Process a domain master announcement frame.
361
Domain master browsers receive these from local masters. The Domain
362
master should then issue a sync with the local master, asking for
363
that machines local server list.
364
******************************************************************/
366
void process_master_browser_announce(struct subnet_record *subrec,
367
struct packet_struct *p,char *buf)
369
unstring local_master_name;
370
struct work_record *work;
371
struct browse_cache_record *browrec;
373
START_PROFILE(master_browser_announce);
375
pull_ascii_nstring(local_master_name,sizeof(local_master_name),buf);
377
DEBUG(3,("process_master_browser_announce: Local master announce from %s IP %s.\n",
378
local_master_name, inet_ntoa(p->ip)));
380
if (!lp_domain_master()) {
381
DEBUG(0,("process_master_browser_announce: Not configured as domain \
382
master - ignoring master announce.\n"));
386
if((work = find_workgroup_on_subnet(subrec, lp_workgroup())) == NULL) {
387
DEBUG(0,("process_master_browser_announce: Cannot find workgroup %s on subnet %s\n",
388
lp_workgroup(), subrec->subnet_name));
392
if(!AM_DOMAIN_MASTER_BROWSER(work)) {
393
DEBUG(0,("process_master_browser_announce: Local master announce made to us from \
394
%s IP %s and we are not a domain master browser.\n", local_master_name, inet_ntoa(p->ip)));
398
/* Add this host as a local master browser entry on the browse lists.
399
This causes a sync request to be made to it at a later date.
402
if((browrec = find_browser_in_lmb_cache( local_master_name )) == NULL) {
404
create_browser_in_lmb_cache( work->work_group, local_master_name, p->ip);
406
update_browser_death_time(browrec);
411
END_PROFILE(master_browser_announce);
414
/*******************************************************************
415
Process an incoming LanMan host announcement packet.
416
*******************************************************************/
418
void process_lm_host_announce(struct subnet_record *subrec, struct packet_struct *p, char *buf, int len)
420
struct dgram_packet *dgram = &p->packet.dgram;
421
uint32 servertype = IVAL(buf,1);
422
int osmajor=CVAL(buf,5); /* major version of node software */
423
int osminor=CVAL(buf,6); /* minor version of node software */
424
int ttl = SVAL(buf,7);
425
unstring announce_name;
426
struct work_record *work;
427
struct server_record *servrec;
429
unstring source_name;
431
char *s = get_safe_str_ptr(buf,len,buf,9);
433
START_PROFILE(lm_host_announce);
437
s = skip_string(buf,len,s);
441
pull_ascii(comment, s, sizeof(fstring), 43, STR_TERMINATE);
443
pull_ascii_nstring(announce_name,sizeof(announce_name),buf+9);
444
pull_ascii_nstring(source_name,sizeof(source_name),dgram->source_name.name);
445
/* For a LanMan host announce the workgroup name is the destination name. */
446
pull_ascii_nstring(work_name,sizeof(work_name),dgram->dest_name.name);
448
DEBUG(3,("process_lm_host_announce: LM Announcement from %s IP %s to \
449
%s for server %s.\n", nmb_namestr(&dgram->source_name), inet_ntoa(p->ip),
450
nmb_namestr(&dgram->dest_name),announce_name));
452
DEBUG(5,("process_lm_host_announce: os=(%d,%d) ttl=%d server type=%08x comment=%s\n",
453
osmajor, osminor, ttl, servertype,comment));
455
if ((osmajor < 36) || (osmajor > 38) || (osminor !=0)) {
456
DEBUG(5,("process_lm_host_announce: LM Announcement packet does not \
457
originate from OS/2 Warp client. Ignoring packet.\n"));
458
/* Could have been from a Windows machine (with its LM Announce enabled),
459
or a Samba server. Then don't disrupt the current browse list. */
463
/* Filter servertype to remove impossible bits. */
464
servertype &= ~(SV_TYPE_LOCAL_LIST_ONLY|SV_TYPE_DOMAIN_ENUM);
466
/* A LanMan host announcement must be sent to the name WORKGROUP<00>. */
467
if(dgram->dest_name.name_type != 0x00) {
468
DEBUG(2,("process_lm_host_announce: incorrect name type for destination from IP %s \
469
(was %02x) should be 0x00. Allowing packet anyway.\n",
470
inet_ntoa(p->ip), dgram->dest_name.name_type));
471
/* Change it so it was. */
472
dgram->dest_name.name_type = 0x00;
476
* Syntax servers version 5.1 send HostAnnounce packets to
477
* *THE WRONG NAME*. They send to LOCAL_MASTER_BROWSER_NAME<00>
478
* instead of WORKGROUP<1d> name. So to fix this we check if
479
* the workgroup name is our own name, and if so change it
480
* to be our primary workgroup name. This code is probably
481
* not needed in the LanMan announce code, but it won't hurt.
484
if(strequal(work_name, global_myname()))
485
unstrcpy(work_name,lp_workgroup());
488
* We are being very agressive here in adding a workgroup
489
* name on the basis of a host announcing itself as being
490
* in that workgroup. Maybe we should wait for the workgroup
491
* announce instead ? JRA.
494
work = find_workgroup_on_subnet(subrec, work_name);
496
if(servertype != 0) {
498
/* We have no record of this workgroup. Add it. */
499
if((work = create_workgroup_on_subnet(subrec, work_name, ttl))==NULL)
503
if((servrec = find_server_in_workgroup( work, announce_name))==NULL) {
504
/* If this server is not already in the workgroup, add it. */
505
create_server_on_workgroup(work, announce_name,
506
servertype|SV_TYPE_LOCAL_LIST_ONLY,
509
/* Update the record. */
510
servrec->serv.type = servertype|SV_TYPE_LOCAL_LIST_ONLY;
511
update_server_ttl( servrec, ttl);
512
fstrcpy(servrec->serv.comment,comment);
516
* This server is announcing it is going down. Remove it from the
519
if(!is_myname(announce_name) && (work != NULL) &&
520
((servrec = find_server_in_workgroup( work, announce_name))!=NULL)) {
521
remove_server_from_workgroup( work, servrec);
525
subrec->work_changed = True;
526
found_lm_clients = True;
530
END_PROFILE(lm_host_announce);
533
/****************************************************************************
534
Send a backup list response.
535
*****************************************************************************/
537
static void send_backup_list_response(struct subnet_record *subrec,
538
struct work_record *work,
539
struct nmb_name *send_to_name,
540
unsigned char max_number_requested,
541
uint32 token, struct in_addr sendto_ip,
546
unsigned int count = 0;
547
unstring send_to_namestr;
549
struct server_record *servrec;
553
memset(outbuf,'\0',sizeof(outbuf));
555
DEBUG(3,("send_backup_list_response: sending backup list for workgroup %s to %s IP %s\n",
556
work->work_group, nmb_namestr(send_to_name), inet_ntoa(sendto_ip)));
560
SCVAL(p,0,ANN_GetBackupListResp); /* Backup list response opcode. */
566
SIVAL(p,0,token); /* The sender's unique info. */
569
/* We always return at least one name - our own. */
571
unstrcpy(myname, global_myname());
574
push_ascii(p, myname, sizeof(outbuf)-PTR_DIFF(p,outbuf)-1, STR_TERMINATE);
576
p = skip_string(outbuf,sizeof(outbuf),p);
578
/* Look for backup browsers in this workgroup. */
581
/* we don't currently send become_backup requests so we should never
582
send any other servers names out as backups for our
583
workgroup. That's why this is commented out (tridge) */
586
* NB. Note that the struct work_record here is not neccessarily
587
* attached to the subnet *subrec.
590
for (servrec = work->serverlist; servrec; servrec = servrec->next)
592
int len = PTR_DIFF(p, outbuf);
593
if((sizeof(outbuf) - len) < 16)
596
if(count >= (unsigned int)max_number_requested)
599
if(strnequal(servrec->serv.name, global_myname(),15))
602
if(!(servrec->serv.type & SV_TYPE_BACKUP_BROWSER))
605
StrnCpy(p, servrec->serv.name, 15);
609
DEBUG(5,("send_backup_list_response: Adding server %s number %d\n",
612
p = skip_string(outbuf,sizeof(outbuf),p);
616
SCVAL(countptr, 0, count);
618
pull_ascii_nstring(send_to_namestr, sizeof(send_to_namestr), send_to_name->name);
620
DEBUG(4,("send_backup_list_response: sending response to %s<00> IP %s with %d servers.\n",
621
send_to_namestr, inet_ntoa(sendto_ip), count));
623
send_mailslot(True, BROWSE_MAILSLOT,
624
outbuf,PTR_DIFF(p,outbuf),
627
sendto_ip, subrec->myip, port);
630
/*******************************************************************
631
Process a send backup list request packet.
633
A client sends a backup list request to ask for a list of servers on
634
the net that maintain server lists for a domain. A server is then
635
chosen from this list to send NetServerEnum commands to to list
638
********************************************************************/
640
void process_get_backup_list_request(struct subnet_record *subrec,
641
struct packet_struct *p,char *buf)
643
struct dgram_packet *dgram = &p->packet.dgram;
644
struct work_record *work;
645
unsigned char max_number_requested = CVAL(buf,0);
646
uint32 token = IVAL(buf,1); /* Sender's key index for the workgroup. */
647
int name_type = dgram->dest_name.name_type;
648
unstring workgroup_name;
649
struct subnet_record *search_subrec = subrec;
651
START_PROFILE(get_backup_list);
652
pull_ascii_nstring(workgroup_name, sizeof(workgroup_name), dgram->dest_name.name);
654
DEBUG(3,("process_get_backup_list_request: request from %s IP %s to %s.\n",
655
nmb_namestr(&dgram->source_name), inet_ntoa(p->ip),
656
nmb_namestr(&dgram->dest_name)));
658
/* We have to be a master browser, or a domain master browser
659
for the requested workgroup. That means it must be our
662
if(strequal(workgroup_name, lp_workgroup()) == False) {
663
DEBUG(7,("process_get_backup_list_request: Ignoring announce request for workgroup %s.\n",
668
if((work = find_workgroup_on_subnet(search_subrec, workgroup_name)) == NULL) {
669
DEBUG(0,("process_get_backup_list_request: Cannot find workgroup %s on \
670
subnet %s.\n", workgroup_name, search_subrec->subnet_name));
675
* If the packet was sent to WORKGROUP<1b> instead
676
* of WORKGROUP<1d> then it was unicast to us a domain master
677
* browser. Change search subrec to unicast.
680
if(name_type == 0x1b) {
681
/* We must be a domain master browser in order to
682
process this packet. */
684
if(!AM_DOMAIN_MASTER_BROWSER(work)) {
685
DEBUG(0,("process_get_backup_list_request: domain list requested for workgroup %s \
686
and I am not a domain master browser.\n", workgroup_name));
690
search_subrec = unicast_subnet;
691
} else if (name_type == 0x1d) {
692
/* We must be a local master browser in order to process this packet. */
694
if(!AM_LOCAL_MASTER_BROWSER(work)) {
695
DEBUG(0,("process_get_backup_list_request: domain list requested for workgroup %s \
696
and I am not a local master browser.\n", workgroup_name));
700
DEBUG(0,("process_get_backup_list_request: Invalid name type %x - should be 0x1b or 0x1d.\n",
705
send_backup_list_response(subrec, work, &dgram->source_name,
706
max_number_requested, token, p->ip, p->port);
710
END_PROFILE(get_backup_list);
713
/*******************************************************************
714
Process a reset browser state packet.
717
0x1 - Stop being a master browser and become a backup browser.
718
0x2 - Discard browse lists, stop being a master browser, try again.
719
0x4 - Stop being a master browser forever.
721
******************************************************************/
723
void process_reset_browser(struct subnet_record *subrec,
724
struct packet_struct *p,char *buf)
726
struct dgram_packet *dgram = &p->packet.dgram;
727
int state = CVAL(buf,0);
728
struct subnet_record *sr;
730
START_PROFILE(reset_browser);
732
DEBUG(1,("process_reset_browser: received diagnostic browser reset \
733
request from %s IP %s state=0x%X\n",
734
nmb_namestr(&dgram->source_name), inet_ntoa(p->ip), state));
736
/* Stop being a local master browser on all our broadcast subnets. */
738
for (sr = FIRST_SUBNET; sr; sr = NEXT_SUBNET_EXCLUDING_UNICAST(sr)) {
739
struct work_record *work;
740
for (work = sr->workgrouplist; work; work = work->next) {
741
if (AM_LOCAL_MASTER_BROWSER(work))
742
unbecome_local_master_browser(sr, work, True);
747
/* Discard our browse lists. */
750
* Calling expire_workgroups_and_servers with a -1
751
* time causes all servers not marked with a PERMANENT_TTL
752
* on the workgroup lists to be discarded, and all
753
* workgroups with empty server lists to be discarded.
754
* This means we keep our own server names and workgroup
755
* as these have a PERMANENT_TTL.
758
expire_workgroups_and_servers(-1);
761
/* Request to stop browsing altogether. */
763
DEBUG(1,("process_reset_browser: ignoring request to stop being a browser.\n"));
765
END_PROFILE(reset_browser);
768
/*******************************************************************
769
Process an announcement request packet.
770
We don't respond immediately, we just check it's a request for
771
our workgroup and then set the flag telling the announce code
772
in nmbd_sendannounce.c:announce_my_server_names that an
773
announcement is needed soon.
774
******************************************************************/
776
void process_announce_request(struct subnet_record *subrec, struct packet_struct *p, char *buf)
778
struct dgram_packet *dgram = &p->packet.dgram;
779
struct work_record *work;
780
unstring workgroup_name;
782
START_PROFILE(announce_request);
784
pull_ascii_nstring(workgroup_name, sizeof(workgroup_name), dgram->dest_name.name);
785
DEBUG(3,("process_announce_request: Announce request from %s IP %s to %s.\n",
786
nmb_namestr(&dgram->source_name), inet_ntoa(p->ip),
787
nmb_namestr(&dgram->dest_name)));
789
/* We only send announcement requests on our workgroup. */
790
if(strequal(workgroup_name, lp_workgroup()) == False) {
791
DEBUG(7,("process_announce_request: Ignoring announce request for workgroup %s.\n",
796
if((work = find_workgroup_on_subnet(subrec, workgroup_name)) == NULL) {
797
DEBUG(0,("process_announce_request: Unable to find workgroup %s on subnet !\n",
802
work->needannounce = True;
805
END_PROFILE(announce_request);
808
/*******************************************************************
809
Process a LanMan announcement request packet.
810
We don't respond immediately, we just check it's a request for
811
our workgroup and then set the flag telling that we have found
812
a LanMan client (DOS or OS/2) and that we will have to start
813
sending LanMan announcements (unless specifically disabled
814
through the "lm announce" parameter in smb.conf)
815
******************************************************************/
817
void process_lm_announce_request(struct subnet_record *subrec, struct packet_struct *p, char *buf, int len)
819
struct dgram_packet *dgram = &p->packet.dgram;
820
unstring workgroup_name;
822
START_PROFILE(lm_announce_request);
824
pull_ascii_nstring(workgroup_name, sizeof(workgroup_name), dgram->dest_name.name);
825
DEBUG(3,("process_lm_announce_request: Announce request from %s IP %s to %s.\n",
826
nmb_namestr(&dgram->source_name), inet_ntoa(p->ip),
827
nmb_namestr(&dgram->dest_name)));
829
/* We only send announcement requests on our workgroup. */
830
if(strequal(workgroup_name, lp_workgroup()) == False) {
831
DEBUG(7,("process_lm_announce_request: Ignoring announce request for workgroup %s.\n",
836
if(find_workgroup_on_subnet(subrec, workgroup_name) == NULL) {
837
DEBUG(0,("process_announce_request: Unable to find workgroup %s on subnet !\n",
842
found_lm_clients = True;
846
END_PROFILE(lm_announce_request);