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
+ Copyright (C) Jeremy Allison 1994-2003
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-
-extern struct in_addr allones_ip;
+#include "../librpc/gen_ndr/svcctl.h"
+#include "nmbd/nmbd.h"
extern uint16 samba_nb_type; /* Samba's NetBIOS type. */
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, global_myname())) == NULL)
- {
- DEBUG(0,("become_domain_master_fail: Error - cannot find server %s \
+ unstring failname;
+ struct work_record *work;
+ struct server_record *servrec;
+
+ pull_ascii_nstring(failname, sizeof(failname), fail_name->name);
+ work = find_workgroup_on_subnet(subrec, failname);
+ if(!work) {
+ DEBUG(0,("become_domain_master_fail: Error - cannot find \
+workgroup %s on subnet %s\n", failname, subrec->subnet_name));
+ return;
+ }
+
+ /* Set the state back to DOMAIN_NONE. */
+ work->dom_state = DOMAIN_NONE;
+
+ if((servrec = find_server_in_workgroup( work, global_myname())) == NULL) {
+ DEBUG(0,("become_domain_master_fail: Error - cannot find server %s \
in workgroup %s on subnet %s\n",
- global_myname(), work->work_group, subrec->subnet_name));
- return;
- }
+ global_myname(), work->work_group, subrec->subnet_name));
+ return;
+ }
- /* Update our server status. */
- servrec->serv.type &= ~SV_TYPE_DOMAIN_MASTER;
+ /* Update our server status. */
+ servrec->serv.type &= ~SV_TYPE_DOMAIN_MASTER;
- /* Tell the namelist writer to write out a change. */
- subrec->work_changed = True;
+ /* 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 \
+ 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)));
+ work->work_group, subrec->subnet_name, nmb_namestr(fail_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, global_myname())) == NULL)
- {
- DEBUG(0,("become_domain_master_stage2: Error - cannot find server %s \
+ unstring regname;
+ struct work_record *work;
+ struct server_record *servrec;
+
+ pull_ascii_nstring(regname, sizeof(regname), registered_name->name);
+ work = find_workgroup_on_subnet( subrec, regname);
+
+ if(!work) {
+ DEBUG(0,("become_domain_master_stage2: Error - cannot find \
+workgroup %s on subnet %s\n", regname, subrec->subnet_name));
+ return;
+ }
+
+ if((servrec = find_server_in_workgroup( work, global_myname())) == NULL) {
+ DEBUG(0,("become_domain_master_stage2: Error - cannot find server %s \
in workgroup %s on subnet %s\n",
- global_myname(), 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 ", global_myname() );
- 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, global_myname(), 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);
- }
+ global_myname(), regname, 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 ", global_myname() );
+ 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;
+ const struct in_addr *nip;
+
+ /* 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, global_myname(), 0x20);
+
+ work->dmb_name = nmbname;
+
+ /* Pick the first interface IPv4 address as the domain master
+ * browser ip. */
+ nip = first_ipv4_iface();
+ if (!nip) {
+ DEBUG(0,("become_domain_master_stage2: "
+ "Error. get_interface returned NULL\n"));
+ return;
+ }
+ my_first_ip = *nip;
+
+ 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)
+static void become_domain_master_stage1(struct subnet_record *subrec, const char *wg_name)
{
- struct work_record *work;
+ struct work_record *work;
- DEBUG(2,("become_domain_master_stage1: Becoming domain master browser for \
+ 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);
+ /* 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);
}
/****************************************************************************
static void become_domain_master_query_success(struct subnet_record *subrec,
struct userdata_struct *userdata,
- struct nmb_name *nmbname, struct in_addr ip,
+ 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 );
- }
- }
+ unstring name;
+ struct in_addr allones_ip;
+
+ pull_ascii_nstring(name, sizeof(name), nmbname->name);
+
+ /* 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. */
+
+ allones_ip.s_addr = htonl(INADDR_BROADCAST);
+
+ if(ismyip_v4(ip) || ip_equal_v4(allones_ip, ip) || is_zero_ip_v4(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, 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), name );
+ dbgtext( "registered on subnet %s.\n", subrec->subnet_name );
+ }
+ }
}
/****************************************************************************
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 \
+ unstring name;
+
+ /* 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;
- }
+ 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);
+ /* Otherwise - not having the name allows us to register it. */
+ pull_ascii_nstring(name, sizeof(name), question_name->name);
+ become_domain_master_stage1(subrec, name);
}
/****************************************************************************
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 \
+ 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);
- }
- }
- }
+ query_name(subrec, workgroup_name, nmbname.name_type,
+ become_domain_master_query_success,
+ become_domain_master_query_fail,
+ NULL);
+ }
+ }
+ }
}
/****************************************************************************
static void become_domain_master_browser_wins(const char *workgroup_name)
{
- struct work_record *work;
+ struct work_record *work;
- work = find_workgroup_on_subnet(unicast_subnet, workgroup_name);
+ work = find_workgroup_on_subnet(unicast_subnet, workgroup_name);
- if (work && (work->dom_state == DOMAIN_NONE))
- {
- struct nmb_name nmbname;
+ if (work && (work->dom_state == DOMAIN_NONE)) {
+ struct nmb_name nmbname;
- make_nmb_name(&nmbname,workgroup_name,0x1b);
+ 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.
- */
+ /*
+ * 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 );
- }
+ 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.
- */
+ /* 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 \
+ 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);
- }
- }
+ inet_ntoa(unicast_subnet->myip), nmb_namestr(&nmbname), workgroup_name));
+
+ query_name(unicast_subnet, workgroup_name, nmbname.name_type,
+ become_domain_master_query_success,
+ become_domain_master_query_fail,
+ NULL);
+ }
+ }
}
/****************************************************************************
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());
- }
+ 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_domain_master()) {
+ 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());
+ }
+ }
}
git.samba.org / kai / samba.git / blobdiff