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samba-mirror/source3/namedbserver.c

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/*
Unix SMB/Netbios implementation.
Version 1.9.
NBT netbios routines and daemon - version 2
'The mother of all checkins' :-). Jeremy Allison (jallison@whistle.com) Wed May 7 1997: Update for 1.9.17alpha1 release - 'browsefix release' designed to make browsing across subnets work. byteorder.h: Updated copyright to 1997. charcnv.c: Updated copyright to 1997. charset.c Updated copyright to 1997. charset.h Updated copyright to 1997. client.c Updated copyright to 1997. clientutil.c Updated copyright to 1997. dir.c Updated copyright to 1997. fault.c Updated copyright to 1997. includes.h Updated copyright to 1997. interface.c Updated copyright to 1997. ipc.c Updated copyright to 1997. kanji.c Updated copyright to 1997. kanji.h Updated copyright to 1997. loadparm.c Updated copyright to 1997. locking.c Updated copyright to 1997. mangle.c Updated copyright to 1997. message.c Updated copyright to 1997. nameannounce.c Made use of WINS subnet explicit. Added reset_announce_timer() so announcement can be made immediately when we become a master. Expanded code to do sync with dmb. namebrowse.c Removed redundent checks for AM_MASTER in sync code. Made use of WINS subnet explicit. namedbname.c Made use of WINS subnet explicit. namedbresp.c Made use of WINS subnet explicit. namedbserver.c Made use of WINS subnet explicit. namedbsubnet.c Explicitly add workgroup to WINS subnet when we become a dmb. Made use of WINS subnet explicit. namedbwork.c Made use of WINS subnet explicit. Removed redundent check_work_servertype() function. nameelect.c Explicitly add workgroup to WINS subnet when we become a master browser. Made use of WINS subnet explicit. namelogon.c Updated copyright to 1997. namepacket.c Updated copyright to 1997. namequery.c Updated copyright to 1997. nameresp.c Made use of WINS subnet explicit. Made nmbd fail if configured as master browser and one exists already. nameserv.c Made use of WINS subnet explicit. Remove redundent logon server and domain master code. nameserv.h Add emumerate subnet macros. nameservreply.c Made use of WINS subnet explicit. nameservresp.c Updated copyright to 1997. namework.c Made use of WINS subnet explicit. Updated code to add sync browser entries to add subnet parameter. nmbd.c Added sanity check for misconfigured nmbd. nmblib.c Updated copyright to 1997. nmblookup.c Updated copyright to 1997. nmbsync.c Removed redundent AM_ANY_MASTER check. params.c Updated copyright to 1997. password.c Updated copyright to 1997. pipes.c Updated copyright to 1997. predict.c Updated copyright to 1997. printing.c Updated copyright to 1997. proto.h Changed protos for new nmbd code. quotas.c Updated copyright to 1997. replace.c Updated copyright to 1997. reply.c Updated copyright to 1997. server.c Updated copyright to 1997. shmem.c Updated copyright to 1997. smb.h Updated copyright to 1997. smbencrypt.c Updated copyright to 1997. smbpasswd.c Updated copyright to 1997. smbrun.c Updated copyright to 1997. status.c Updated copyright to 1997. system.c Updated copyright to 1997. testparm.c Updated copyright to 1997. testprns.c Updated copyright to 1997. time.c Updated copyright to 1997. trans2.c Updated copyright to 1997. trans2.h Updated copyright to 1997. uid.c Updated copyright to 1997. username.c Updated copyright to 1997. util.c Updated copyright to 1997. version.h Changed to 1.9.17alpha1. (This used to be commit cf23a155a1315f50d488794a2caf88402bf3e3e6)
1997-05-08 05:14:17 +04:00
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 namedbserver containing server database functions
*/
#include "includes.h"
#include "smb.h"
extern int ClientNMB;
extern int DEBUGLEVEL;
extern pstring myname;
extern fstring myworkgroup;
/* this is our domain/workgroup/server database */
extern struct subnet_record *subnetlist;
extern BOOL updatedlists;
/*******************************************************************
expire old servers in the serverlist
time of -1 indicates everybody dies except those with time of 0
remove_all_servers indicates everybody dies.
******************************************************************/
void remove_old_servers(struct work_record *work, time_t t,
BOOL remove_all)
{
struct server_record *s;
struct server_record *nexts;
/* expire old entries in the serverlist */
for (s = work->serverlist; s; s = nexts)
{
if (remove_all || (s->death_time && (t == -1 || s->death_time < t)))
{
DEBUG(3,("Removing dead server %s\n",s->serv.name));
updatedlists = True;
nexts = s->next;
if (s->prev) s->prev->next = s->next;
if (s->next) s->next->prev = s->prev;
if (work->serverlist == s)
work->serverlist = s->next;
free(s);
}
else
{
nexts = s->next;
}
}
}
/***************************************************************************
add a server into the list
**************************************************************************/
static void add_server(struct work_record *work,struct server_record *s)
{
struct server_record *s2;
if (!work->serverlist) {
work->serverlist = s;
s->prev = NULL;
s->next = NULL;
return;
}
for (s2 = work->serverlist; s2->next; s2 = s2->next) ;
s2->next = s;
s->next = NULL;
s->prev = s2;
}
/****************************************************************************
find a server in a server list.
**************************************************************************/
struct server_record *find_server(struct work_record *work, char *name)
{
struct server_record *ret;
if (!work) return NULL;
for (ret = work->serverlist; ret; ret = ret->next)
{
if (strequal(ret->serv.name,name))
{
return ret;
}
}
return NULL;
}
/****************************************************************************
add a server entry
****************************************************************************/
struct server_record *add_server_entry(struct subnet_record *d,
struct work_record *work,
char *name,int servertype,
int ttl,char *comment,
BOOL replace)
{
BOOL newentry=False;
struct server_record *s;
if (name[0] == '*')
{
return (NULL);
}
s = find_server(work, name);
if (s && !replace)
{
DEBUG(4,("Not replacing %s\n",name));
return(s);
}
if (!s || s->serv.type != servertype || !strequal(s->serv.comment, comment))
updatedlists=True;
if (!s)
{
newentry = True;
s = (struct server_record *)malloc(sizeof(*s));
if (!s) return(NULL);
bzero((char *)s,sizeof(*s));
}
/* update the entry */
StrnCpy(s->serv.name,name,sizeof(s->serv.name)-1);
StrnCpy(s->serv.comment,comment,sizeof(s->serv.comment)-1);
strupper(s->serv.name);
s->serv.type = servertype;
s->death_time = servertype ? (ttl?time(NULL)+ttl*3:0) : (time(NULL)-1);
/* for a domain entry, the comment field refers to the server name */
if (s->serv.type & SV_TYPE_DOMAIN_ENUM) strupper(s->serv.comment);
if (newentry)
{
add_server(work, s);
DEBUG(3,("Added "));
}
else
{
DEBUG(3,("Updated "));
}
DEBUG(3,("server entry %s of type %x (%s) to %s %s\n",
name,servertype,comment,
work->work_group,inet_ntoa(d->bcast_ip)));
return(s);
}
/*******************************************************************
expire old servers in the serverlist
******************************************************************/
void expire_servers(time_t t)
{
struct subnet_record *d;
'The mother of all checkins' :-). Jeremy Allison (jallison@whistle.com) Wed May 7 1997: Update for 1.9.17alpha1 release - 'browsefix release' designed to make browsing across subnets work. byteorder.h: Updated copyright to 1997. charcnv.c: Updated copyright to 1997. charset.c Updated copyright to 1997. charset.h Updated copyright to 1997. client.c Updated copyright to 1997. clientutil.c Updated copyright to 1997. dir.c Updated copyright to 1997. fault.c Updated copyright to 1997. includes.h Updated copyright to 1997. interface.c Updated copyright to 1997. ipc.c Updated copyright to 1997. kanji.c Updated copyright to 1997. kanji.h Updated copyright to 1997. loadparm.c Updated copyright to 1997. locking.c Updated copyright to 1997. mangle.c Updated copyright to 1997. message.c Updated copyright to 1997. nameannounce.c Made use of WINS subnet explicit. Added reset_announce_timer() so announcement can be made immediately when we become a master. Expanded code to do sync with dmb. namebrowse.c Removed redundent checks for AM_MASTER in sync code. Made use of WINS subnet explicit. namedbname.c Made use of WINS subnet explicit. namedbresp.c Made use of WINS subnet explicit. namedbserver.c Made use of WINS subnet explicit. namedbsubnet.c Explicitly add workgroup to WINS subnet when we become a dmb. Made use of WINS subnet explicit. namedbwork.c Made use of WINS subnet explicit. Removed redundent check_work_servertype() function. nameelect.c Explicitly add workgroup to WINS subnet when we become a master browser. Made use of WINS subnet explicit. namelogon.c Updated copyright to 1997. namepacket.c Updated copyright to 1997. namequery.c Updated copyright to 1997. nameresp.c Made use of WINS subnet explicit. Made nmbd fail if configured as master browser and one exists already. nameserv.c Made use of WINS subnet explicit. Remove redundent logon server and domain master code. nameserv.h Add emumerate subnet macros. nameservreply.c Made use of WINS subnet explicit. nameservresp.c Updated copyright to 1997. namework.c Made use of WINS subnet explicit. Updated code to add sync browser entries to add subnet parameter. nmbd.c Added sanity check for misconfigured nmbd. nmblib.c Updated copyright to 1997. nmblookup.c Updated copyright to 1997. nmbsync.c Removed redundent AM_ANY_MASTER check. params.c Updated copyright to 1997. password.c Updated copyright to 1997. pipes.c Updated copyright to 1997. predict.c Updated copyright to 1997. printing.c Updated copyright to 1997. proto.h Changed protos for new nmbd code. quotas.c Updated copyright to 1997. replace.c Updated copyright to 1997. reply.c Updated copyright to 1997. server.c Updated copyright to 1997. shmem.c Updated copyright to 1997. smb.h Updated copyright to 1997. smbencrypt.c Updated copyright to 1997. smbpasswd.c Updated copyright to 1997. smbrun.c Updated copyright to 1997. status.c Updated copyright to 1997. system.c Updated copyright to 1997. testparm.c Updated copyright to 1997. testprns.c Updated copyright to 1997. time.c Updated copyright to 1997. trans2.c Updated copyright to 1997. trans2.h Updated copyright to 1997. uid.c Updated copyright to 1997. username.c Updated copyright to 1997. util.c Updated copyright to 1997. version.h Changed to 1.9.17alpha1. (This used to be commit cf23a155a1315f50d488794a2caf88402bf3e3e6)
1997-05-08 05:14:17 +04:00
for (d = FIRST_SUBNET; d ; d = NEXT_SUBNET_INCLUDING_WINS(d))
{
struct work_record *work;
for (work = d->workgrouplist; work; work = work->next)
{
remove_old_servers(work, t, False);
}
}
}