mirror of
https://github.com/samba-team/samba.git
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6b9dbbcd24
Don't use nstrings to hold workgroup and netbios names. The problem with them is that MB netbios
and workgroup names in unix charset (particularly utf8) may be up to 3x bigger than the name
when represented in dos charset (ie. cp932). So go back to using fstrings for these but
translate into nstrings (ie. 16 byte length values) for transport on the wire.
Jeremy.
(This used to be commit b4ea493599
)
174 lines
6.0 KiB
C
174 lines
6.0 KiB
C
/*
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Unix SMB/CIFS implementation.
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NBT netbios routines and daemon - version 2
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Copyright (C) Andrew Tridgell 1994-1998
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Copyright (C) Luke Kenneth Casson Leighton 1994-1998
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Copyright (C) Jeremy Allison 1994-2003
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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extern struct in_addr allones_ip;
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extern uint16 samba_nb_type; /* Samba's NetBIOS type. */
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/****************************************************************************
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Fail to become a Logon server on a subnet.
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****************************************************************************/
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static void become_logon_server_fail(struct subnet_record *subrec,
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struct response_record *rrec,
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struct nmb_name *fail_name)
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{
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fstring failname;
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struct work_record *work;
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struct server_record *servrec;
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pull_ascii_nstring(failname, sizeof(failname), fail_name->name);
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work = find_workgroup_on_subnet(subrec, failname);
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if(!work) {
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DEBUG(0,("become_logon_server_fail: Error - cannot find \
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workgroup %s on subnet %s\n", failname, subrec->subnet_name));
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return;
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}
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if((servrec = find_server_in_workgroup( work, global_myname())) == NULL) {
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DEBUG(0,("become_logon_server_fail: Error - cannot find server %s \
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in workgroup %s on subnet %s\n",
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global_myname(), failname, subrec->subnet_name));
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work->log_state = LOGON_NONE;
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return;
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}
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/* Set the state back to LOGON_NONE. */
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work->log_state = LOGON_NONE;
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servrec->serv.type &= ~SV_TYPE_DOMAIN_CTRL;
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DEBUG(0,("become_logon_server_fail: Failed to become a domain master for \
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workgroup %s on subnet %s. Couldn't register name %s.\n",
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work->work_group, subrec->subnet_name, nmb_namestr(fail_name)));
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}
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/****************************************************************************
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Become a Logon server on a subnet.
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****************************************************************************/
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static void become_logon_server_success(struct subnet_record *subrec,
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struct userdata_struct *userdata,
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struct nmb_name *registered_name,
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uint16 nb_flags,
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int ttl, struct in_addr registered_ip)
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{
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fstring reg_name;
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struct work_record *work;
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struct server_record *servrec;
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pull_ascii_nstring(reg_name, sizeof(reg_name), registered_name->name);
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work = find_workgroup_on_subnet( subrec, reg_name);
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if(!work) {
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DEBUG(0,("become_logon_server_success: Error - cannot find \
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workgroup %s on subnet %s\n", reg_name, subrec->subnet_name));
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return;
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}
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if((servrec = find_server_in_workgroup( work, global_myname())) == NULL) {
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DEBUG(0,("become_logon_server_success: Error - cannot find server %s \
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in workgroup %s on subnet %s\n",
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global_myname(), reg_name, subrec->subnet_name));
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work->log_state = LOGON_NONE;
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return;
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}
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/* Set the state in the workgroup structure. */
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work->log_state = LOGON_SRV; /* Become domain master. */
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/* Update our server status. */
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servrec->serv.type |= (SV_TYPE_NT|SV_TYPE_DOMAIN_MEMBER);
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/* To allow Win95 policies to load we need to set type domain
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controller.
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*/
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servrec->serv.type |= SV_TYPE_DOMAIN_CTRL;
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/* Tell the namelist writer to write out a change. */
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subrec->work_changed = True;
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/*
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* Add the WORKGROUP<1C> name to the UNICAST subnet with the IP address
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* for this subnet so we will respond to queries on this name.
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*/
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{
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struct nmb_name nmbname;
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make_nmb_name(&nmbname,lp_workgroup(),0x1c);
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insert_permanent_name_into_unicast(subrec, &nmbname, 0x1c);
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}
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DEBUG(0,("become_logon_server_success: Samba is now a logon server \
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for workgroup %s on subnet %s\n", work->work_group, subrec->subnet_name));
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}
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/*******************************************************************
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Become a logon server by attempting to register the WORKGROUP<1c>
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group name.
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******************************************************************/
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static void become_logon_server(struct subnet_record *subrec,
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struct work_record *work)
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{
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DEBUG(2,("become_logon_server: Atempting to become logon server for workgroup %s \
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on subnet %s\n", work->work_group,subrec->subnet_name));
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DEBUG(3,("become_logon_server: go to first stage: register %s<1c> name\n",
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work->work_group));
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work->log_state = LOGON_WAIT;
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register_name(subrec, work->work_group,0x1c,samba_nb_type|NB_GROUP,
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become_logon_server_success,
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become_logon_server_fail, NULL);
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}
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/*****************************************************************************
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Add the internet group <1c> logon names by unicast and broadcast.
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****************************************************************************/
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void add_logon_names(void)
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{
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struct subnet_record *subrec;
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for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec)) {
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struct work_record *work = find_workgroup_on_subnet(subrec, lp_workgroup());
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if (work && (work->log_state == LOGON_NONE)) {
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struct nmb_name nmbname;
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make_nmb_name(&nmbname,lp_workgroup(),0x1c);
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if (find_name_on_subnet(subrec, &nmbname, FIND_SELF_NAME) == NULL) {
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if( DEBUGLVL( 0 ) ) {
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dbgtext( "add_domain_logon_names:\n" );
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dbgtext( "Attempting to become logon server " );
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dbgtext( "for workgroup %s ", lp_workgroup() );
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dbgtext( "on subnet %s\n", subrec->subnet_name );
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}
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become_logon_server(subrec, work);
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}
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}
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}
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}
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