/*
- Unix SMB/Netbios implementation.
- Version 1.9.
+ 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
+ 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 int DEBUGLEVEL;
-extern pstring scope;
-extern pstring global_myname;
+#include "nmbd/nmbd.h"
+#include "../librpc/gen_ndr/svcctl.h"
extern uint16 samba_nb_type; /* Samba's NetBIOS name type. */
void insert_permanent_name_into_unicast( struct subnet_record *subrec,
struct nmb_name *nmbname, uint16 nb_type )
{
- struct name_record *namerec;
-
- if((namerec = find_name_on_subnet(unicast_subnet, nmbname, FIND_SELF_NAME)) == NULL)
- {
- /* The name needs to be created on the unicast subnet. */
- add_name_to_subnet( unicast_subnet, nmbname->name, nmbname->name_type,
- nb_type, PERMANENT_TTL, PERMANENT_NAME, 1, &subrec->myip);
- }
- else
- {
- /* The name already exists on the unicast subnet. Add our local
- IP for the given broadcast subnet to the name. */
- add_ip_to_name_record( namerec, subrec->myip);
- }
+ unstring name;
+ struct name_record *namerec;
+
+ if((namerec = find_name_on_subnet(unicast_subnet, nmbname, FIND_SELF_NAME)) == NULL) {
+ pull_ascii_nstring(name, sizeof(name), nmbname->name);
+ /* The name needs to be created on the unicast subnet. */
+ (void)add_name_to_subnet( unicast_subnet, name,
+ nmbname->name_type, nb_type,
+ PERMANENT_TTL, PERMANENT_NAME, 1, &subrec->myip);
+ } else {
+ /* The name already exists on the unicast subnet. Add our local
+ IP for the given broadcast subnet to the name. */
+ add_ip_to_name_record( namerec, subrec->myip);
+ }
}
/*******************************************************************
static void remove_permanent_name_from_unicast( struct subnet_record *subrec,
struct nmb_name *nmbname )
{
- struct name_record *namerec;
-
- if((namerec = find_name_on_subnet(unicast_subnet, nmbname, FIND_SELF_NAME)) != NULL)
- {
- /* Remove this broadcast subnet IP address from the name. */
- remove_ip_from_name_record( namerec, subrec->myip);
- if(namerec->data.num_ips == 0)
- remove_name_from_namelist( unicast_subnet, namerec);
- }
+ struct name_record *namerec;
+
+ if((namerec = find_name_on_subnet(unicast_subnet, nmbname, FIND_SELF_NAME)) != NULL) {
+ /* Remove this broadcast subnet IP address from the name. */
+ remove_ip_from_name_record( namerec, subrec->myip);
+ if(namerec->data.num_ips == 0)
+ remove_name_from_namelist( unicast_subnet, namerec);
+ }
}
/*******************************************************************
state back to potential browser, or none.
******************************************************************/
-static void reset_workgroup_state( struct subnet_record *subrec, char *workgroup_name )
+static void reset_workgroup_state( struct subnet_record *subrec, const char *workgroup_name,
+ bool force_new_election )
{
- struct work_record *work;
- struct server_record *servrec;
- struct nmb_name nmbname;
+ struct work_record *work;
+ struct server_record *servrec;
+ struct nmb_name nmbname;
- if((work = find_workgroup_on_subnet( subrec, workgroup_name)) == NULL)
- {
- DEBUG(0,("reset_workgroup_state: Error - cannot find workgroup %s on \
+ if((work = find_workgroup_on_subnet( subrec, workgroup_name)) == NULL) {
+ DEBUG(0,("reset_workgroup_state: Error - cannot find workgroup %s on \
subnet %s.\n", workgroup_name, subrec->subnet_name ));
- return;
- }
+ return;
+ }
- if((servrec = find_server_in_workgroup( work, global_myname)) == NULL)
- {
- DEBUG(0,("reset_workgroup_state: Error - cannot find server %s \
+ if((servrec = find_server_in_workgroup( work, lp_netbios_name())) == NULL) {
+ DEBUG(0,("reset_workgroup_state: Error - cannot find server %s \
in workgroup %s on subnet %s\n",
- global_myname, work->work_group, subrec->subnet_name));
- work->mst_state = lp_local_master() ? MST_POTENTIAL : MST_NONE;
- return;
- }
+ lp_netbios_name(), work->work_group, subrec->subnet_name));
+ work->mst_state = lp_local_master() ? MST_POTENTIAL : MST_NONE;
+ return;
+ }
- /* Update our server status - remove any master flag and replace
- it with the potential browser flag. */
- servrec->serv.type &= ~SV_TYPE_MASTER_BROWSER;
- servrec->serv.type |= (lp_local_master() ? SV_TYPE_POTENTIAL_BROWSER : 0);
+ /* Update our server status - remove any master flag and replace
+ it with the potential browser flag. */
+ servrec->serv.type &= ~SV_TYPE_MASTER_BROWSER;
+ servrec->serv.type |= (lp_local_master() ? SV_TYPE_POTENTIAL_BROWSER : 0);
- /* 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;
- /* Reset our election flags. */
- work->ElectionCriterion &= ~0x4;
+ /* Reset our election flags. */
+ work->ElectionCriterion &= ~0x4;
- work->mst_state = lp_local_master() ? MST_POTENTIAL : MST_NONE;
+ work->mst_state = lp_local_master() ? MST_POTENTIAL : MST_NONE;
- /* Forget who the local master browser was for
- this workgroup. */
+ /* Forget who the local master browser was for
+ this workgroup. */
- set_workgroup_local_master_browser_name( work, "");
+ set_workgroup_local_master_browser_name( work, "");
- /*
- * Ensure the IP address of this subnet is not registered as one
- * of the IP addresses of the WORKGROUP<1d> name on the unicast
- * subnet. This undoes what we did below when we became a local
- * master browser.
- */
+ /*
+ * Ensure the IP address of this subnet is not registered as one
+ * of the IP addresses of the WORKGROUP<1d> name on the unicast
+ * subnet. This undoes what we did below when we became a local
+ * master browser.
+ */
- make_nmb_name(&nmbname, work->work_group, 0x1d, scope);
+ make_nmb_name(&nmbname, work->work_group, 0x1d);
- remove_permanent_name_from_unicast( subrec, &nmbname);
+ remove_permanent_name_from_unicast( subrec, &nmbname);
+ if(force_new_election)
+ work->needelection = True;
}
/*******************************************************************
Unbecome the local master browser name release success function.
******************************************************************/
-void unbecome_local_master_success(struct subnet_record *subrec,
+static void unbecome_local_master_success(struct subnet_record *subrec,
struct userdata_struct *userdata,
struct nmb_name *released_name,
struct in_addr released_ip)
{
- DEBUG(3,("unbecome_local_master_success: released name %s.\n",
- namestr(released_name)));
+ bool force_new_election = False;
+ unstring relname;
- /* Now reset the workgroup and server state. */
- reset_workgroup_state( subrec, released_name->name );
+ memcpy((char *)&force_new_election, userdata->data, sizeof(bool));
- DEBUG(0,("\n%s ***** Samba name server %s has stopped being a local master browser for workgroup %s \
-on subnet %s *****\n\n", timestring(), global_myname, released_name->name, subrec->subnet_name));
+ DEBUG(3,("unbecome_local_master_success: released name %s.\n",
+ nmb_namestr(released_name)));
+
+ /* Now reset the workgroup and server state. */
+ pull_ascii_nstring(relname, sizeof(relname), released_name->name);
+ reset_workgroup_state( subrec, relname, force_new_election );
+
+ if( DEBUGLVL( 0 ) ) {
+ dbgtext( "*****\n\n" );
+ dbgtext( "Samba name server %s ", lp_netbios_name() );
+ dbgtext( "has stopped being a local master browser " );
+ dbgtext( "for workgroup %s ", relname );
+ dbgtext( "on subnet %s\n\n*****\n", subrec->subnet_name );
+ }
}
Unbecome the local master browser name release fail function.
******************************************************************/
-void unbecome_local_master_fail(struct subnet_record *subrec, struct response_record *rrec,
+static void unbecome_local_master_fail(struct subnet_record *subrec, struct response_record *rrec,
struct nmb_name *fail_name)
{
- struct name_record *namerec;
-
- DEBUG(0,("unbecome_local_master_fail: failed to release name %s. \
-Removing from namelist anyway.\n", namestr(fail_name)));
-
- /* Do it anyway. */
- namerec = find_name_on_subnet(subrec, fail_name, FIND_SELF_NAME);
- if(namerec)
- remove_name_from_namelist(subrec, namerec);
-
- /* Now reset the workgroup and server state. */
- reset_workgroup_state( subrec, fail_name->name );
-
- DEBUG(0,("\n%s ***** Samba name server %s has stopped being a local master browser for workgroup %s \
-on subnet %s *****\n\n", timestring(), global_myname, fail_name->name, subrec->subnet_name));
-
+ struct name_record *namerec;
+ struct userdata_struct *userdata = rrec->userdata;
+ bool force_new_election = False;
+ unstring failname;
+
+ memcpy((char *)&force_new_election, userdata->data, sizeof(bool));
+
+ DEBUG(0,("unbecome_local_master_fail: failed to release name %s. \
+Removing from namelist anyway.\n", nmb_namestr(fail_name)));
+
+ /* Do it anyway. */
+ namerec = find_name_on_subnet(subrec, fail_name, FIND_SELF_NAME);
+ if(namerec)
+ remove_name_from_namelist(subrec, namerec);
+
+ /* Now reset the workgroup and server state. */
+ pull_ascii_nstring(failname, sizeof(failname), fail_name->name);
+ reset_workgroup_state( subrec, failname, force_new_election );
+
+ if( DEBUGLVL( 0 ) ) {
+ dbgtext( "*****\n\n" );
+ dbgtext( "Samba name server %s ", lp_netbios_name() );
+ dbgtext( "has stopped being a local master browser " );
+ dbgtext( "for workgroup %s ", failname );
+ dbgtext( "on subnet %s\n\n*****\n", subrec->subnet_name );
+ }
}
/*******************************************************************
- Utility function to remove the WORKGROUP<1d> name called by both
- success and fail of releasing the MSBROWSE name.
+ Utility function to remove the WORKGROUP<1d> name.
******************************************************************/
-void release_1d_name( struct subnet_record *subrec, char *workgroup_name)
+static void release_1d_name( struct subnet_record *subrec, const char *workgroup_name,
+ bool force_new_election)
{
- struct nmb_name nmbname;
- struct name_record *namerec;
-
- make_nmb_name(&nmbname, workgroup_name, 0x1d, scope);
- if((namerec = find_name_on_subnet( subrec, &nmbname, FIND_SELF_NAME))!=NULL)
- {
- release_name(subrec, namerec,
- unbecome_local_master_success,
- unbecome_local_master_fail,
- NULL);
- }
+ struct nmb_name nmbname;
+ struct name_record *namerec;
+
+ make_nmb_name(&nmbname, workgroup_name, 0x1d);
+ if((namerec = find_name_on_subnet( subrec, &nmbname, FIND_SELF_NAME))!=NULL) {
+ struct userdata_struct *userdata;
+ size_t size = sizeof(struct userdata_struct) + sizeof(bool);
+
+ if((userdata = (struct userdata_struct *)SMB_MALLOC(size)) == NULL) {
+ DEBUG(0,("release_1d_name: malloc fail.\n"));
+ return;
+ }
+
+ userdata->copy_fn = NULL;
+ userdata->free_fn = NULL;
+ userdata->userdata_len = sizeof(bool);
+ memcpy((char *)userdata->data, &force_new_election, sizeof(bool));
+
+ release_name(subrec, namerec,
+ unbecome_local_master_success,
+ unbecome_local_master_fail,
+ userdata);
+
+ zero_free(userdata, size);
+ }
}
/*******************************************************************
struct nmb_name *released_name,
struct in_addr released_ip)
{
- DEBUG(4,("release_msbrowse_name_success: Released name %s on subnet %s\n.",
- namestr(released_name), subrec->subnet_name ));
-
- /* Remove the permanent MSBROWSE name added into the unicast subnet. */
- remove_permanent_name_from_unicast( subrec, released_name);
+ DEBUG(4,("release_msbrowse_name_success: Released name %s on subnet %s\n.",
+ nmb_namestr(released_name), subrec->subnet_name ));
- release_1d_name( subrec, userdata->data );
+ /* Remove the permanent MSBROWSE name added into the unicast subnet. */
+ remove_permanent_name_from_unicast( subrec, released_name);
}
/*******************************************************************
struct response_record *rrec,
struct nmb_name *fail_name)
{
- struct userdata_struct *userdata = rrec->userdata;
- struct name_record *namerec;
+ struct name_record *namerec;
- DEBUG(4,("release_msbrowse_name_fail: Failed to release name %s on subnet %s\n.",
- namestr(fail_name), subrec->subnet_name ));
+ DEBUG(4,("release_msbrowse_name_fail: Failed to release name %s on subnet %s\n.",
+ nmb_namestr(fail_name), subrec->subnet_name ));
- /* Release the name anyway. */
- namerec = find_name_on_subnet(subrec, fail_name, FIND_SELF_NAME);
- if(namerec)
- remove_name_from_namelist(subrec, namerec);
+ /* Release the name anyway. */
+ namerec = find_name_on_subnet(subrec, fail_name, FIND_SELF_NAME);
+ if(namerec)
+ remove_name_from_namelist(subrec, namerec);
- /* Remove the permanent MSBROWSE name added into the unicast subnet. */
- remove_permanent_name_from_unicast( subrec, fail_name);
-
- release_1d_name( subrec, userdata->data );
+ /* Remove the permanent MSBROWSE name added into the unicast subnet. */
+ remove_permanent_name_from_unicast( subrec, fail_name);
}
/*******************************************************************
- Unbecome the local master browser.
+ Unbecome the local master browser. If force_new_election is true, restart
+ the election process after we've unbecome the local master.
******************************************************************/
-void unbecome_local_master_browser(struct subnet_record *subrec, struct work_record *work)
+void unbecome_local_master_browser(struct subnet_record *subrec, struct work_record *work,
+ bool force_new_election)
{
- struct server_record *servrec;
- struct name_record *namerec;
- struct nmb_name nmbname;
- struct userdata_struct *userdata;
+ struct name_record *namerec;
+ struct nmb_name nmbname;
/* Sanity check. */
- DEBUG(2,("unbecome_local_master_browser: unbecoming local master for workgroup %s \
+ DEBUG(2,("unbecome_local_master_browser: unbecoming local master for workgroup %s \
on subnet %s\n",work->work_group, subrec->subnet_name));
- if((servrec = find_server_in_workgroup( work, global_myname)) == NULL)
- {
- DEBUG(0,("unbecome_local_master_browser: Error - cannot find server %s \
+ if(find_server_in_workgroup( work, lp_netbios_name()) == NULL) {
+ DEBUG(0,("unbecome_local_master_browser: Error - cannot find server %s \
in workgroup %s on subnet %s\n",
- global_myname, work->work_group, subrec->subnet_name));
- work->mst_state = lp_local_master() ? MST_POTENTIAL : MST_NONE;
- return;
- }
+ lp_netbios_name(), work->work_group, subrec->subnet_name));
+ work->mst_state = lp_local_master() ? MST_POTENTIAL : MST_NONE;
+ return;
+ }
- /* Set the state to unbecoming. */
- work->mst_state = MST_UNBECOMING_MASTER;
-
- /* Setup the userdata for the MSBROWSE name release. */
- if((userdata = (struct userdata_struct *)malloc( sizeof(struct userdata_struct) + sizeof(fstring)+1)) == NULL)
- {
- DEBUG(0,("unbecome_local_master_browser: malloc fail.\n"));
- return;
- }
-
- userdata->copy_fn = NULL;
- userdata->free_fn = NULL;
- userdata->userdata_len = strlen(work->work_group)+1;
- pstrcpy(userdata->data, work->work_group);
-
- /* Deregister any browser names we may have. */
- make_nmb_name(&nmbname, MSBROWSE, 0x1, scope);
- if((namerec = find_name_on_subnet( subrec, &nmbname, FIND_SELF_NAME))!=NULL)
- {
- release_name(subrec, namerec,
- release_msbrowse_name_success,
- release_msbrowse_name_fail,
- userdata);
- }
-
- free((char *)userdata);
+ /* Set the state to unbecoming. */
+ work->mst_state = MST_UNBECOMING_MASTER;
+
+ /*
+ * Release the WORKGROUP<1d> name asap to allow another machine to
+ * claim it.
+ */
+
+ release_1d_name( subrec, work->work_group, force_new_election);
+
+ /* Deregister any browser names we may have. */
+ make_nmb_name(&nmbname, MSBROWSE, 0x1);
+ if((namerec = find_name_on_subnet( subrec, &nmbname, FIND_SELF_NAME))!=NULL) {
+ release_name(subrec, namerec,
+ release_msbrowse_name_success,
+ release_msbrowse_name_fail,
+ NULL);
+ }
+
+ /*
+ * Ensure we have sent and processed these release packets
+ * before returning - we don't want to process any election
+ * packets before dealing with the 1d release.
+ */
+
+ retransmit_or_expire_response_records(time(NULL));
}
/****************************************************************************
uint16 nb_flags,
int ttl, struct in_addr registered_ip)
{
- int i = 0;
- struct server_record *sl;
- struct work_record *work = find_workgroup_on_subnet( subrec, registered_name->name);
- struct server_record *servrec;
-
- if(!work)
- {
- DEBUG(0,("become_local_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_local_master_stage2: Error - cannot find server %s \
+ int i = 0;
+ struct server_record *sl;
+ struct work_record *work;
+ struct server_record *servrec;
+ unstring regname;
+
+ pull_ascii_nstring(regname, sizeof(regname), registered_name->name);
+ work = find_workgroup_on_subnet( subrec, regname);
+
+ if(!work) {
+ DEBUG(0,("become_local_master_stage2: Error - cannot find \
+workgroup %s on subnet %s\n", regname, subrec->subnet_name));
+ return;
+ }
+
+ if((servrec = find_server_in_workgroup( work, lp_netbios_name())) == NULL) {
+ DEBUG(0,("become_local_master_stage2: Error - cannot find server %s \
in workgroup %s on subnet %s\n",
- global_myname, registered_name->name, subrec->subnet_name));
- work->mst_state = lp_local_master() ? MST_POTENTIAL : MST_NONE;
- return;
- }
+ lp_netbios_name(), regname, subrec->subnet_name));
+ work->mst_state = lp_local_master() ? MST_POTENTIAL : MST_NONE;
+ return;
+ }
- DEBUG(3,("become_local_master_stage2: registered as master browser for workgroup %s \
+ DEBUG(3,("become_local_master_stage2: registered as master browser for workgroup %s \
on subnet %s\n", work->work_group, subrec->subnet_name));
- work->mst_state = MST_BROWSER; /* registering WORKGROUP(1d) succeeded */
-
- /* update our server status */
- servrec->serv.type |= SV_TYPE_MASTER_BROWSER;
- servrec->serv.type &= ~SV_TYPE_POTENTIAL_BROWSER;
-
- /* Tell the namelist writer to write out a change. */
- subrec->work_changed = True;
-
- /* Add this name to the workgroup as local master browser. */
- set_workgroup_local_master_browser_name( work, global_myname);
-
- /* Count the number of servers we have on our list. If it's
- less than 10 (just a heuristic) request the servers
- to announce themselves.
- */
- for( sl = work->serverlist; sl != NULL; sl = sl->next)
- i++;
-
- if (i < 10)
- {
- /* Ask all servers on our local net to announce to us. */
- broadcast_announce_request(subrec, work);
- }
-
- /*
- * Now we are a local master on a broadcast subnet, we need to add
- * the WORKGROUP<1d> name to the unicast subnet so that we can answer
- * unicast requests sent to this name. We can create this name directly on
- * the unicast subnet as a WINS server always returns true when registering
- * this name, and discards the registration. We use the number of IP
- * addresses registered to this name as a reference count, as we
- * remove this broadcast subnet IP address from it when we stop becoming a local
- * master browser for this broadcast subnet.
- */
-
- insert_permanent_name_into_unicast( subrec, registered_name, nb_flags);
-
- /* Reset the announce master browser timer so that we try and tell a domain
- master browser as soon as possible that we are a local master browser. */
- reset_announce_timer();
-
- DEBUG(0,("\n%s ***** Samba name server %s is now a local master browser for workgroup %s \
-on subnet %s *****\n\n", timestring(), global_myname, work->work_group, subrec->subnet_name));
-
+ work->mst_state = MST_BROWSER; /* registering WORKGROUP(1d) succeeded */
+
+ /* update our server status */
+ servrec->serv.type |= SV_TYPE_MASTER_BROWSER;
+ servrec->serv.type &= ~SV_TYPE_POTENTIAL_BROWSER;
+
+ /* Tell the namelist writer to write out a change. */
+ subrec->work_changed = True;
+
+ /* Add this name to the workgroup as local master browser. */
+ set_workgroup_local_master_browser_name( work, lp_netbios_name());
+
+ /* Count the number of servers we have on our list. If it's
+ less than 10 (just a heuristic) request the servers
+ to announce themselves.
+ */
+ for( sl = work->serverlist; sl != NULL; sl = sl->next)
+ i++;
+
+ if (i < 10) {
+ /* Ask all servers on our local net to announce to us. */
+ broadcast_announce_request(subrec, work);
+ }
+
+ /*
+ * Now we are a local master on a broadcast subnet, we need to add
+ * the WORKGROUP<1d> name to the unicast subnet so that we can answer
+ * unicast requests sent to this name. We can create this name directly on
+ * the unicast subnet as a WINS server always returns true when registering
+ * this name, and discards the registration. We use the number of IP
+ * addresses registered to this name as a reference count, as we
+ * remove this broadcast subnet IP address from it when we stop becoming a local
+ * master browser for this broadcast subnet.
+ */
+
+ insert_permanent_name_into_unicast( subrec, registered_name, nb_flags);
+
+ /* Reset the announce master browser timer so that we try and tell a domain
+ master browser as soon as possible that we are a local master browser. */
+ reset_announce_timer();
+
+ if( DEBUGLVL( 0 ) ) {
+ dbgtext( "*****\n\n" );
+ dbgtext( "Samba name server %s ", lp_netbios_name() );
+ dbgtext( "is now a local master browser " );
+ dbgtext( "for workgroup %s ", work->work_group );
+ dbgtext( "on subnet %s\n\n*****\n", subrec->subnet_name );
+ }
}
/****************************************************************************
Failed to register the WORKGROUP<1d> name.
****************************************************************************/
+
static void become_local_master_fail2(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);
+ unstring failname;
+ struct work_record *work;
- DEBUG(0,("become_local_master_fail2: failed to register name %s on subnet %s. \
-Failed to become a local master browser.\n", namestr(fail_name), subrec->subnet_name));
+ DEBUG(0,("become_local_master_fail2: failed to register name %s on subnet %s. \
+Failed to become a local master browser.\n", nmb_namestr(fail_name), subrec->subnet_name));
- if(!work)
- {
- DEBUG(0,("become_local_master_fail2: Error - cannot find \
-workgroup %s on subnet %s\n", fail_name->name, subrec->subnet_name));
- return;
- }
+ pull_ascii_nstring(failname, sizeof(failname), fail_name->name);
+ work = find_workgroup_on_subnet( subrec, failname);
- /* Roll back all the way by calling unbecome_local_master_browser(). */
- unbecome_local_master_browser(subrec, work);
+ if(!work) {
+ DEBUG(0,("become_local_master_fail2: Error - cannot find \
+workgroup %s on subnet %s\n", failname, subrec->subnet_name));
+ return;
+ }
+
+ /* Roll back all the way by calling unbecome_local_master_browser(). */
+ unbecome_local_master_browser(subrec, work, False);
}
/****************************************************************************
uint16 nb_flags,
int ttl, struct in_addr registered_ip)
{
- char *work_name = userdata->data;
- struct work_record *work = find_workgroup_on_subnet( subrec, work_name);
-
- if(!work)
- {
- DEBUG(0,("become_local_master_stage1: Error - cannot find \
-workgroup %s on subnet %s\n", work_name, subrec->subnet_name));
- return;
- }
-
- DEBUG(3,("become_local_master_stage1: go to stage 2: register the %s<1d> name.\n",
- work->work_group));
-
- work->mst_state = MST_MSB; /* Registering MSBROWSE was successful. */
-
- /*
- * We registered the MSBROWSE name on a broadcast subnet, now need to add
- * the MSBROWSE name to the unicast subnet so that we can answer
- * unicast requests sent to this name. We create this name directly on
- * the unicast subnet.
- */
-
- insert_permanent_name_into_unicast( subrec, registered_name, nb_flags);
-
- /* Attempt to register the WORKGROUP<1d> name. */
- register_name(subrec, work->work_group,0x1d,samba_nb_type,
- become_local_master_stage2,
- become_local_master_fail2,
- NULL);
+ char *work_name = userdata->data;
+ struct work_record *work = find_workgroup_on_subnet( subrec, work_name);
+
+ if(!work) {
+ DEBUG(0,("become_local_master_stage1: Error - cannot find \
+ %s on subnet %s\n", work_name, subrec->subnet_name));
+ return;
+ }
+
+ DEBUG(3,("become_local_master_stage1: go to stage 2: register the %s<1d> name.\n",
+ work->work_group));
+
+ work->mst_state = MST_MSB; /* Registering MSBROWSE was successful. */
+
+ /*
+ * We registered the MSBROWSE name on a broadcast subnet, now need to add
+ * the MSBROWSE name to the unicast subnet so that we can answer
+ * unicast requests sent to this name. We create this name directly on
+ * the unicast subnet.
+ */
+
+ insert_permanent_name_into_unicast( subrec, registered_name, nb_flags);
+
+ /* Attempt to register the WORKGROUP<1d> name. */
+ register_name(subrec, work->work_group,0x1d,samba_nb_type,
+ become_local_master_stage2,
+ become_local_master_fail2,
+ NULL);
}
/****************************************************************************
struct response_record *rrec,
struct nmb_name *fail_name)
{
- char *work_name = rrec->userdata->data;
- struct work_record *work = find_workgroup_on_subnet(subrec, work_name);
- struct server_record *servrec;
+ char *work_name = rrec->userdata->data;
+ struct work_record *work = find_workgroup_on_subnet(subrec, work_name);
- if(!work)
- {
- DEBUG(0,("become_local_master_fail1: Error - cannot find \
+ if(!work) {
+ DEBUG(0,("become_local_master_fail1: Error - cannot find \
workgroup %s on subnet %s\n", work_name, subrec->subnet_name));
- return;
- }
+ return;
+ }
- if((servrec = find_server_in_workgroup(work, global_myname)) == NULL)
- {
- DEBUG(0,("become_local_master_fail1: Error - cannot find server %s \
+ if(find_server_in_workgroup(work, lp_netbios_name()) == NULL) {
+ DEBUG(0,("become_local_master_fail1: Error - cannot find server %s \
in workgroup %s on subnet %s\n",
- global_myname, work->work_group, subrec->subnet_name));
- return;
- }
+ lp_netbios_name(), work->work_group, subrec->subnet_name));
+ return;
+ }
- reset_workgroup_state( subrec, work->work_group );
+ reset_workgroup_state( subrec, work->work_group, False );
- DEBUG(0,("become_local_master_fail1: Failed to become a local master browser for \
+ DEBUG(0,("become_local_master_fail1: Failed to become a local master browser for \
workgroup %s on subnet %s. Couldn't register name %s.\n",
- work->work_group, subrec->subnet_name, namestr(fail_name)));
+ work->work_group, subrec->subnet_name, nmb_namestr(fail_name)));
}
/******************************************************************
void become_local_master_browser(struct subnet_record *subrec, struct work_record *work)
{
- struct server_record *servrec;
- struct userdata_struct *userdata;
-
- /* Sanity check. */
- if (!lp_local_master())
- {
- DEBUG(0,("become_local_master_browser: Samba not configured as a local master browser.\n"));
- return;
- }
-
- if(!AM_POTENTIAL_MASTER_BROWSER(work))
- {
- DEBUG(2,("become_local_master_browser: Awaiting potential browser state. Current state is %d\n",
- work->mst_state ));
- return;
- }
-
- if((servrec = find_server_in_workgroup( work, global_myname)) == NULL)
- {
- DEBUG(0,("become_local_master_browser: Error - cannot find server %s \
+ struct userdata_struct *userdata;
+ size_t size = sizeof(struct userdata_struct) + sizeof(fstring) + 1;
+
+ /* Sanity check. */
+ if (!lp_local_master()) {
+ DEBUG(0,("become_local_master_browser: Samba not configured as a local master browser.\n"));
+ return;
+ }
+
+ if(!AM_POTENTIAL_MASTER_BROWSER(work)) {
+ DEBUG(2,("become_local_master_browser: Awaiting potential browser state. Current state is %d\n",
+ work->mst_state ));
+ return;
+ }
+
+ if(find_server_in_workgroup( work, lp_netbios_name()) == NULL) {
+ DEBUG(0,("become_local_master_browser: Error - cannot find server %s \
in workgroup %s on subnet %s\n",
- global_myname, work->work_group, subrec->subnet_name));
- return;
- }
+ lp_netbios_name(), work->work_group, subrec->subnet_name));
+ return;
+ }
- DEBUG(2,("become_local_master_browser: Starting to become a master browser for workgroup \
+ DEBUG(2,("become_local_master_browser: Starting to become a master browser for workgroup \
%s on subnet %s\n", work->work_group, subrec->subnet_name));
- DEBUG(3,("become_local_master_browser: first stage - attempt to register ^1^2__MSBROWSE__^2^1\n"));
- work->mst_state = MST_BACKUP; /* an election win was successful */
+ DEBUG(3,("become_local_master_browser: first stage - attempt to register ^1^2__MSBROWSE__^2^1\n"));
+ work->mst_state = MST_BACKUP; /* an election win was successful */
- work->ElectionCriterion |= 0x5;
+ work->ElectionCriterion |= 0x5;
- /* 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;
- /* Setup the userdata_struct. */
- if((userdata = (struct userdata_struct *)malloc(sizeof(struct userdata_struct) + sizeof(fstring)+1)) == NULL)
- {
- DEBUG(0,("become_local_master_browser: malloc fail.\n"));
- return;
- }
+ /* Setup the userdata_struct. */
+ if((userdata = (struct userdata_struct *)SMB_MALLOC(size)) == NULL) {
+ DEBUG(0,("become_local_master_browser: malloc fail.\n"));
+ return;
+ }
- userdata->copy_fn = NULL;
- userdata->free_fn = NULL;
- userdata->userdata_len = strlen(work->work_group)+1;
- pstrcpy(userdata->data, work->work_group);
+ userdata->copy_fn = NULL;
+ userdata->free_fn = NULL;
+ userdata->userdata_len = strlen(work->work_group)+1;
+ strlcpy(userdata->data, work->work_group, size - sizeof(*userdata));
- /* Register the special browser group name. */
- register_name(subrec, MSBROWSE, 0x01, samba_nb_type|NB_GROUP,
- become_local_master_stage1,
- become_local_master_fail1,
- userdata);
+ /* Register the special browser group name. */
+ register_name(subrec, MSBROWSE, 0x01, samba_nb_type|NB_GROUP,
+ become_local_master_stage1,
+ become_local_master_fail1,
+ userdata);
- free((char *)userdata);
+ zero_free(userdata, size);
}
/***************************************************************
as the workgroup name.
****************************************************************/
-void set_workgroup_local_master_browser_name( struct work_record *work, char *newname)
+void set_workgroup_local_master_browser_name( struct work_record *work, const char *newname)
{
- DEBUG(5,("set_workgroup_local_master_browser_name: setting local master name to '%s' \
+ DEBUG(5,("set_workgroup_local_master_browser_name: setting local master name to '%s' \
for workgroup %s.\n", newname, work->work_group ));
#if 0
}
#endif
- StrnCpy(work->local_master_browser_name, newname,
- sizeof(work->local_master_browser_name)-1);
+ unstrcpy(work->local_master_browser_name, newname);
}
git.samba.org / vlendec / samba-autobuild / .git / blobdiff