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/*
Unix SMB/Netbios implementation.
Version 1.9.
NBT netbios routines and daemon - version 2
Copyright (C) Andrew Tridgell 1994-1997
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Revision History:
14 jan 96: lkcl@pires.co.uk
added multiple workgroup domain master support
04 jul 96: lkcl@pires.co.uk
created module namedbwork containing workgroup database functions
*/
#include "includes.h"
#include "smb.h"
extern int ClientNMB;
extern int DEBUGLEVEL;
/* this is our domain/workgroup/server database */
extern struct subnet_record *subnetlist;
extern struct in_addr wins_ip;
extern fstring myworkgroup;
int workgroup_count = 0; /* unique index key: one for each workgroup */
/****************************************************************************
add a workgroup into the domain list
**************************************************************************/
static void add_workgroup(struct work_record *work, struct subnet_record *d)
{
struct work_record *w2;
if (!work || !d) return;
if (!d->workgrouplist)
{
d->workgrouplist = work;
work->prev = NULL;
work->next = NULL;
return;
}
for (w2 = d->workgrouplist; w2->next; w2 = w2->next);
w2->next = work;
work->next = NULL;
work->prev = w2;
}
/****************************************************************************
create a blank workgroup
**************************************************************************/
static struct work_record *make_workgroup(char *name)
{
struct work_record *work;
struct subnet_record *d;
int t = -1;
if (!name || !name[0]) return NULL;
work = (struct work_record *)malloc(sizeof(*work));
if (!work) return(NULL);
StrnCpy(work->work_group,name,sizeof(work->work_group)-1);
work->serverlist = NULL;
work->ServerType = DFLT_SERVER_TYPE | (lp_local_master() ?
SV_TYPE_POTENTIAL_BROWSER : 0 );
work->RunningElection = False;
work->ElectionCount = 0;
work->needelection = False;
work->needannounce = True;
work->mst_state = MST_POTENTIAL;
work->dom_state = DOMAIN_NONE;
work->log_state = LOGON_NONE;
/* make sure all token representations of workgroups are unique */
for (d = FIRST_SUBNET; d && t == -1; d = NEXT_SUBNET_INCLUDING_WINS(d))
{
struct work_record *w;
for (w = d->workgrouplist; w && t == -1; w = w->next)
{
if (strequal(w->work_group, work->work_group)) t = w->token;
}
}
if (t == -1)
{
work->token = ++workgroup_count;
}
else
{
work->token = t;
}
/* WfWg uses 01040b01 */
/* Win95 uses 01041501 */
/* NTAS uses ???????? */
work->ElectionCriterion = (MAINTAIN_LIST<<1)|(ELECTION_VERSION<<8);
work->ElectionCriterion |= (lp_os_level() << 24);
if (lp_domain_master()) {
work->ElectionCriterion |= 0x80;
}
return work;
}
/*******************************************************************
remove workgroups
******************************************************************/
struct work_record *remove_workgroup(struct subnet_record *d,
struct work_record *work,
BOOL remove_all_servers)
{
struct work_record *ret_work = NULL;
if (!d || !work) return NULL;
DEBUG(3,("Removing old workgroup %s\n", work->work_group));
ret_work = work->next;
remove_old_servers(work, -1, remove_all_servers);
if (!work->serverlist)
{
if (work->prev) work->prev->next = work->next;
if (work->next) work->next->prev = work->prev;
if (d->workgrouplist == work) d->workgrouplist = work->next;
free(work);
}
return ret_work;
}
/****************************************************************************
find a workgroup in the workgrouplist
only create it if the domain allows it, or the parameter 'add' insists
that it get created/added anyway. this allows us to force entries in
lmhosts file to be added.
**************************************************************************/
struct work_record *find_workgroupstruct(struct subnet_record *d,
fstring name, BOOL add)
{
struct work_record *ret, *work;
if (!d) return NULL;
DEBUG(4, ("workgroup search for %s: ", name));
for (ret = d->workgrouplist; ret; ret = ret->next) {
if (!strcmp(ret->work_group,name)) {
DEBUG(4, ("found\n"));
return(ret);
}
}
if (!add) {
DEBUG(4, ("not found\n"));
return NULL;
}
DEBUG(4,("not found: creating\n"));
if ((work = make_workgroup(name)))
{
if (!ip_equal(d->bcast_ip, wins_ip) &&
lp_preferred_master() && lp_local_master() &&
strequal(myworkgroup, name))
{
DEBUG(3, ("preferred master startup for %s\n", work->work_group));
work->needelection = True;
work->ElectionCriterion |= (1<<3);
}
add_workgroup(work, d);
return(work);
}
return NULL;
}
/****************************************************************************
dump a copy of the workgroup/domain database
**************************************************************************/
void dump_workgroups(void)
{
struct subnet_record *d;
for (d = FIRST_SUBNET; d; d = NEXT_SUBNET_INCLUDING_WINS(d))
{
if (d->workgrouplist)
{
struct work_record *work;
DEBUG(4,("dump domain bcast=%15s: ", inet_ntoa(d->bcast_ip)));
DEBUG(4,(" netmask=%15s:\n", inet_ntoa(d->mask_ip)));
for (work = d->workgrouplist; work; work = work->next)
{
DEBUG(4,("\t%s(%d)\n", work->work_group, work->token));
if (work->serverlist)
{
struct server_record *s;
for (s = work->serverlist; s; s = s->next)
{
DEBUG(4,("\t\t%s %8x (%s)\n",
s->serv.name, s->serv.type, s->serv.comment));
}
}
}
}
}
}
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