diff options
Diffstat (limited to 'source4/nmbd/nmbd_become_dmb.c')
| -rw-r--r-- | source4/nmbd/nmbd_become_dmb.c | 396 |
1 files changed, 0 insertions, 396 deletions
diff --git a/source4/nmbd/nmbd_become_dmb.c b/source4/nmbd/nmbd_become_dmb.c deleted file mode 100644 index d8122777fe..0000000000 --- a/source4/nmbd/nmbd_become_dmb.c +++ /dev/null @@ -1,396 +0,0 @@ -/* - Unix SMB/CIFS implementation. - NBT netbios routines and daemon - version 2 - Copyright (C) Andrew Tridgell 1994-1998 - Copyright (C) Luke Kenneth Casson Leighton 1994-1998 - Copyright (C) Jeremy Allison 1994-1998 - - 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. - -*/ - -#include "includes.h" - -extern struct in_addr allones_ip; - -extern uint16 samba_nb_type; /* Samba's NetBIOS type. */ - -static void become_domain_master_browser_bcast(const char *); - -/**************************************************************************** - Fail to become a Domain Master Browser on a subnet. - ****************************************************************************/ - -static void become_domain_master_fail(struct subnet_record *subrec, - struct response_record *rrec, - struct nmb_name *fail_name) -{ - struct work_record *work = find_workgroup_on_subnet(subrec, fail_name->name); - struct server_record *servrec; - - if(!work) - { - DEBUG(0,("become_domain_master_fail: Error - cannot find \ -workgroup %s on subnet %s\n", fail_name->name, subrec->subnet_name)); - return; - } - - /* Set the state back to DOMAIN_NONE. */ - work->dom_state = DOMAIN_NONE; - - if((servrec = find_server_in_workgroup( work, lp_netbios_name())) == NULL) - { - DEBUG(0,("become_domain_master_fail: Error - cannot find server %s \ -in workgroup %s on subnet %s\n", - lp_netbios_name(), work->work_group, subrec->subnet_name)); - return; - } - - /* Update our server status. */ - servrec->serv.type &= ~SV_TYPE_DOMAIN_MASTER; - - /* Tell the namelist writer to write out a change. */ - subrec->work_changed = True; - - DEBUG(0,("become_domain_master_fail: Failed to become a domain master browser for \ -workgroup %s on subnet %s. Couldn't register name %s.\n", - work->work_group, subrec->subnet_name, nmb_namestr(fail_name))); -} - -/**************************************************************************** - Become a Domain Master Browser on a subnet. - ****************************************************************************/ - -static void become_domain_master_stage2(struct subnet_record *subrec, - struct userdata_struct *userdata, - struct nmb_name *registered_name, - uint16 nb_flags, - int ttl, struct in_addr registered_ip) -{ - struct work_record *work = find_workgroup_on_subnet( subrec, registered_name->name); - struct server_record *servrec; - - if(!work) - { - DEBUG(0,("become_domain_master_stage2: Error - cannot find \ -workgroup %s on subnet %s\n", registered_name->name, subrec->subnet_name)); - return; - } - - if((servrec = find_server_in_workgroup( work, lp_netbios_name())) == NULL) - { - DEBUG(0,("become_domain_master_stage2: Error - cannot find server %s \ -in workgroup %s on subnet %s\n", - lp_netbios_name(), registered_name->name, subrec->subnet_name)); - work->dom_state = DOMAIN_NONE; - return; - } - - /* Set the state in the workgroup structure. */ - work->dom_state = DOMAIN_MST; /* Become domain master. */ - - /* Update our server status. */ - servrec->serv.type |= (SV_TYPE_NT|SV_TYPE_DOMAIN_MASTER); - - /* Tell the namelist writer to write out a change. */ - subrec->work_changed = True; - - if( DEBUGLVL( 0 ) ) - { - dbgtext( "*****\n\nSamba server %s ", lp_netbios_name() ); - dbgtext( "is now a domain master browser for " ); - dbgtext( "workgroup %s ", work->work_group ); - dbgtext( "on subnet %s\n\n*****\n", subrec->subnet_name ); - } - - if( subrec == unicast_subnet ) - { - struct nmb_name nmbname; - struct in_addr my_first_ip; - - /* Put our name and first IP address into the - workgroup struct as domain master browser. This - will stop us syncing with ourself if we are also - a local master browser. */ - - make_nmb_name(&nmbname, lp_netbios_name(), 0x20); - - work->dmb_name = nmbname; - /* Pick the first interface ip address as the domain master browser ip. */ - my_first_ip = *iface_n_ip(0); - - putip((char *)&work->dmb_addr, &my_first_ip); - - /* We successfully registered by unicast with the - WINS server. We now expect to become the domain - master on the local subnets. If this fails, it's - probably a 1.9.16p2 to 1.9.16p11 server's fault. - - This is a configuration issue that should be addressed - by the network administrator - you shouldn't have - several machines configured as a domain master browser - for the same WINS scope (except if they are 1.9.17 or - greater, and you know what you're doing. - - see docs/DOMAIN.txt. - - */ - become_domain_master_browser_bcast(work->work_group); - } - else - { - /* - * Now we are a domain master on a broadcast subnet, we need to add - * the WORKGROUP<1b> name to the unicast subnet so that we can answer - * unicast requests sent to this name. This bug wasn't found for a while - * as it is strange to have a DMB without using WINS. JRA. - */ - insert_permanent_name_into_unicast(subrec, registered_name, nb_flags); - } -} - -/**************************************************************************** - Start the name registration process when becoming a Domain Master Browser - on a subnet. - ****************************************************************************/ - -static void become_domain_master_stage1(struct subnet_record *subrec, char *wg_name) -{ - struct work_record *work; - - DEBUG(2,("become_domain_master_stage1: Becoming domain master browser for \ -workgroup %s on subnet %s\n", wg_name, subrec->subnet_name)); - - /* First, find the workgroup on the subnet. */ - if((work = find_workgroup_on_subnet( subrec, wg_name )) == NULL) - { - DEBUG(0,("become_domain_master_stage1: Error - unable to find workgroup %s on subnet %s.\n", - wg_name, subrec->subnet_name)); - return; - } - - DEBUG(3,("become_domain_master_stage1: go to first stage: register <1b> name\n")); - work->dom_state = DOMAIN_WAIT; - - /* WORKGROUP<1b> is the domain master browser name. */ - register_name(subrec, work->work_group,0x1b,samba_nb_type, - become_domain_master_stage2, - become_domain_master_fail, NULL); -} - -/**************************************************************************** - Function called when a query for a WORKGROUP<1b> name succeeds. - This is normally a fail condition as it means there is already - a domain master browser for a workgroup and we were trying to - become one. -****************************************************************************/ - -static void become_domain_master_query_success(struct subnet_record *subrec, - struct userdata_struct *userdata, - struct nmb_name *nmbname, struct in_addr ip, - struct res_rec *rrec) -{ - /* If the given ip is not ours, then we can't become a domain - controler as the name is already registered. - */ - - /* BUG note. Samba 1.9.16p11 servers seem to return the broadcast - address or zero ip for this query. Pretend this is ok. */ - - if(ismyip(ip) || ip_equal(allones_ip, ip) || is_zero_ip(ip)) - { - if( DEBUGLVL( 3 ) ) - { - dbgtext( "become_domain_master_query_success():\n" ); - dbgtext( "Our address (%s) ", inet_ntoa(ip) ); - dbgtext( "returned in query for name %s ", nmb_namestr(nmbname) ); - dbgtext( "(domain master browser name) " ); - dbgtext( "on subnet %s.\n", subrec->subnet_name ); - dbgtext( "Continuing with domain master code.\n" ); - } - - become_domain_master_stage1(subrec, nmbname->name); - } - else - { - if( DEBUGLVL( 0 ) ) - { - dbgtext( "become_domain_master_query_success:\n" ); - dbgtext( "There is already a domain master browser at " ); - dbgtext( "IP %s for workgroup %s ", inet_ntoa(ip), nmbname->name ); - dbgtext( "registered on subnet %s.\n", subrec->subnet_name ); - } - } -} - -/**************************************************************************** - Function called when a query for a WORKGROUP<1b> name fails. - This is normally a success condition as it then allows us to register - our own Domain Master Browser name. - ****************************************************************************/ - -static void become_domain_master_query_fail(struct subnet_record *subrec, - struct response_record *rrec, - struct nmb_name *question_name, int fail_code) -{ - /* If the query was unicast, and the error is not NAM_ERR (name didn't exist), - then this is a failure. Otherwise, not finding the name is what we want. */ - if((subrec == unicast_subnet) && (fail_code != NAM_ERR)) - { - DEBUG(0,("become_domain_master_query_fail: Error %d returned when \ -querying WINS server for name %s.\n", - fail_code, nmb_namestr(question_name))); - return; - } - - /* Otherwise - not having the name allows us to register it. */ - become_domain_master_stage1(subrec, question_name->name); -} - -/**************************************************************************** - Attempt to become a domain master browser on all broadcast subnets. - ****************************************************************************/ - -static void become_domain_master_browser_bcast(const char *workgroup_name) -{ - struct subnet_record *subrec; - - for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) - { - struct work_record *work = find_workgroup_on_subnet(subrec, workgroup_name); - - if (work && (work->dom_state == DOMAIN_NONE)) - { - struct nmb_name nmbname; - make_nmb_name(&nmbname,workgroup_name,0x1b); - - /* - * Check for our name on the given broadcast subnet first, only initiate - * further processing if we cannot find it. - */ - - if (find_name_on_subnet(subrec, &nmbname, FIND_SELF_NAME) == NULL) - { - if( DEBUGLVL( 0 ) ) - { - dbgtext( "become_domain_master_browser_bcast:\n" ); - dbgtext( "Attempting to become domain master browser on " ); - dbgtext( "workgroup %s on subnet %s\n", - workgroup_name, subrec->subnet_name ); - } - - /* Send out a query to establish whether there's a - domain controller on the local subnet. If not, - we can become a domain controller. - */ - - DEBUG(0,("become_domain_master_browser_bcast: querying subnet %s \ -for domain master browser on workgroup %s\n", subrec->subnet_name, workgroup_name)); - - query_name(subrec, nmbname.name, nmbname.name_type, - become_domain_master_query_success, - become_domain_master_query_fail, - NULL); - } - } - } -} - -/**************************************************************************** - Attempt to become a domain master browser by registering with WINS. - ****************************************************************************/ - -static void become_domain_master_browser_wins(const char *workgroup_name) -{ - struct work_record *work; - - work = find_workgroup_on_subnet(unicast_subnet, workgroup_name); - - if (work && (work->dom_state == DOMAIN_NONE)) - { - struct nmb_name nmbname; - - make_nmb_name(&nmbname,workgroup_name,0x1b); - - /* - * Check for our name on the unicast subnet first, only initiate - * further processing if we cannot find it. - */ - - if (find_name_on_subnet(unicast_subnet, &nmbname, FIND_SELF_NAME) == NULL) - { - if( DEBUGLVL( 0 ) ) - { - dbgtext( "become_domain_master_browser_wins:\n" ); - dbgtext( "Attempting to become domain master browser " ); - dbgtext( "on workgroup %s, subnet %s.\n", - workgroup_name, unicast_subnet->subnet_name ); - } - - /* Send out a query to establish whether there's a - domain master broswer registered with WINS. If not, - we can become a domain master browser. - */ - - DEBUG(0,("become_domain_master_browser_wins: querying WINS server from IP %s \ -for domain master browser name %s on workgroup %s\n", - inet_ntoa(unicast_subnet->myip), nmb_namestr(&nmbname), workgroup_name)); - - query_name(unicast_subnet, nmbname.name, nmbname.name_type, - become_domain_master_query_success, - become_domain_master_query_fail, - NULL); - } - } -} - -/**************************************************************************** - Add the domain logon server and domain master browser names - if we are set up to do so. - **************************************************************************/ - -void add_domain_names(time_t t) -{ - static time_t lastrun = 0; - - if ((lastrun != 0) && (t < lastrun + (CHECK_TIME_ADD_DOM_NAMES * 60))) - return; - - lastrun = t; - - /* Do the "internet group" - <1c> names. */ - if (lp_domain_logons()) - add_logon_names(); - - /* Do the domain master names. */ - if(lp_server_role() == ROLE_DOMAIN_PDC) - { - if(we_are_a_wins_client()) - { - /* We register the WORKGROUP<1b> name with the WINS - server first, and call add_domain_master_bcast() - only if this is successful. - - This results in domain logon services being gracefully provided, - as opposed to the aggressive nature of 1.9.16p2 to 1.9.16p11. - 1.9.16p2 to 1.9.16p11 - due to a bug in namelogon.c, - cannot provide domain master / domain logon services. - */ - become_domain_master_browser_wins(lp_workgroup()); - } - else - become_domain_master_browser_bcast(lp_workgroup()); - } -} |