diff options
Diffstat (limited to 'source3/nmbd/nmbd_become_lmb.c')
| -rw-r--r-- | source3/nmbd/nmbd_become_lmb.c | 688 |
1 files changed, 339 insertions, 349 deletions
diff --git a/source3/nmbd/nmbd_become_lmb.c b/source3/nmbd/nmbd_become_lmb.c index d390bf72e9..2370c7ba36 100644 --- a/source3/nmbd/nmbd_become_lmb.c +++ b/source3/nmbd/nmbd_become_lmb.c @@ -3,7 +3,7 @@ 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 @@ -33,21 +33,20 @@ 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. */ - (void)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); - } + nstring name; + struct name_record *namerec; + + if((namerec = find_name_on_subnet(unicast_subnet, nmbname, FIND_SELF_NAME)) == NULL) { + pull_ascii_nstring(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); + } } /******************************************************************* @@ -57,15 +56,14 @@ void insert_permanent_name_into_unicast( struct subnet_record *subrec, 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); + } } /******************************************************************* @@ -73,60 +71,58 @@ static void remove_permanent_name_from_unicast( struct subnet_record *subrec, 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, global_myname())) == 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; - } + global_myname(), 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); + 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; + if(force_new_election) + work->needelection = True; } /******************************************************************* @@ -138,24 +134,25 @@ static void unbecome_local_master_success(struct subnet_record *subrec, struct nmb_name *released_name, struct in_addr released_ip) { - BOOL force_new_election = False; + BOOL force_new_election = False; + nstring relname; - memcpy((char *)&force_new_election, userdata->data, sizeof(BOOL)); + memcpy((char *)&force_new_election, userdata->data, sizeof(BOOL)); - DEBUG(3,("unbecome_local_master_success: released name %s.\n", - nmb_namestr(released_name))); + DEBUG(3,("unbecome_local_master_success: released name %s.\n", + nmb_namestr(released_name))); - /* Now reset the workgroup and server state. */ - reset_workgroup_state( subrec, released_name->name, force_new_election ); + /* Now reset the workgroup and server state. */ + pull_ascii_nstring(relname, released_name->name); + reset_workgroup_state( subrec, relname, force_new_election ); - if( DEBUGLVL( 0 ) ) - { - dbgtext( "*****\n\n" ); - dbgtext( "Samba name server %s ", global_myname() ); - dbgtext( "has stopped being a local master browser " ); - dbgtext( "for workgroup %s ", released_name->name ); - dbgtext( "on subnet %s\n\n*****\n", subrec->subnet_name ); - } + if( DEBUGLVL( 0 ) ) { + dbgtext( "*****\n\n" ); + dbgtext( "Samba name server %s ", global_myname() ); + dbgtext( "has stopped being a local master browser " ); + dbgtext( "for workgroup %s ", relname ); + dbgtext( "on subnet %s\n\n*****\n", subrec->subnet_name ); + } } @@ -166,67 +163,66 @@ static void unbecome_local_master_success(struct subnet_record *subrec, static void unbecome_local_master_fail(struct subnet_record *subrec, struct response_record *rrec, struct nmb_name *fail_name) { - struct name_record *namerec; - struct userdata_struct *userdata = rrec->userdata; - BOOL force_new_election = False; + struct name_record *namerec; + struct userdata_struct *userdata = rrec->userdata; + BOOL force_new_election = False; + nstring failname; - memcpy((char *)&force_new_election, userdata->data, sizeof(BOOL)); + memcpy((char *)&force_new_election, userdata->data, sizeof(BOOL)); - DEBUG(0,("unbecome_local_master_fail: failed to release name %s. \ + 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. */ - reset_workgroup_state( subrec, fail_name->name, force_new_election ); - - if( DEBUGLVL( 0 ) ) - { - dbgtext( "*****\n\n" ); - dbgtext( "Samba name server %s ", global_myname() ); - dbgtext( "has stopped being a local master browser " ); - dbgtext( "for workgroup %s ", fail_name->name ); - dbgtext( "on subnet %s\n\n*****\n", subrec->subnet_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, fail_name->name); + reset_workgroup_state( subrec, failname, force_new_election ); + + if( DEBUGLVL( 0 ) ) { + dbgtext( "*****\n\n" ); + dbgtext( "Samba name server %s ", global_myname() ); + 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. ******************************************************************/ -static 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); - 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 *)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 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 *)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); + } } /******************************************************************* @@ -238,11 +234,11 @@ static void release_msbrowse_name_success(struct subnet_record *subrec, struct nmb_name *released_name, struct in_addr released_ip) { - DEBUG(4,("release_msbrowse_name_success: Released name %s on subnet %s\n.", - nmb_namestr(released_name), subrec->subnet_name )); + DEBUG(4,("release_msbrowse_name_success: Released name %s on subnet %s\n.", + nmb_namestr(released_name), subrec->subnet_name )); - /* Remove the permanent MSBROWSE name added into the unicast subnet. */ - remove_permanent_name_from_unicast( subrec, released_name); + /* Remove the permanent MSBROWSE name added into the unicast subnet. */ + remove_permanent_name_from_unicast( subrec, released_name); } /******************************************************************* @@ -253,18 +249,18 @@ static void release_msbrowse_name_fail( struct subnet_record *subrec, struct response_record *rrec, struct nmb_name *fail_name) { - struct name_record *namerec; + struct name_record *namerec; - DEBUG(4,("release_msbrowse_name_fail: Failed to release name %s on subnet %s\n.", - nmb_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); + /* Remove the permanent MSBROWSE name added into the unicast subnet. */ + remove_permanent_name_from_unicast( subrec, fail_name); } /******************************************************************* @@ -275,50 +271,48 @@ static void release_msbrowse_name_fail( struct subnet_record *subrec, void unbecome_local_master_browser(struct subnet_record *subrec, struct work_record *work, BOOL force_new_election) { - struct name_record *namerec; - struct nmb_name nmbname; + 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(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, global_myname()) == 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; - } + global_myname(), 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; - - /* - * 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)); + /* 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)); } /**************************************************************************** @@ -332,104 +326,107 @@ static void become_local_master_stage2(struct subnet_record *subrec, 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; + nstring regname; + + pull_ascii_nstring(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, global_myname())) == 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; - } + global_myname(), 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(); - - if( DEBUGLVL( 0 ) ) - { - dbgtext( "*****\n\n" ); - dbgtext( "Samba name server %s ", global_myname() ); - dbgtext( "is now a local master browser " ); - dbgtext( "for workgroup %s ", work->work_group ); - dbgtext( "on subnet %s\n\n*****\n", 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(); + + if( DEBUGLVL( 0 ) ) { + dbgtext( "*****\n\n" ); + dbgtext( "Samba name server %s ", global_myname() ); + 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); + nstring failname; + struct work_record *work; - DEBUG(0,("become_local_master_fail2: failed to register name %s on subnet %s. \ + 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, 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, False); + 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); } /**************************************************************************** @@ -442,35 +439,34 @@ static void become_local_master_stage1(struct subnet_record *subrec, 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); } /**************************************************************************** @@ -481,29 +477,27 @@ static void become_local_master_fail1(struct subnet_record *subrec, 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); + 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(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, global_myname()) == 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; - } + global_myname(), work->work_group, subrec->subnet_name)); + return; + } - reset_workgroup_state( subrec, work->work_group, False ); + 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, nmb_namestr(fail_name))); + work->work_group, subrec->subnet_name, nmb_namestr(fail_name))); } /****************************************************************** @@ -517,61 +511,57 @@ workgroup %s on subnet %s. Couldn't register name %s.\n", void become_local_master_browser(struct subnet_record *subrec, struct work_record *work) { - 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, 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, global_myname()) == 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; - } + global_myname(), 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(size)) == NULL) - { - DEBUG(0,("become_local_master_browser: malloc fail.\n")); - return; - } + /* Setup the userdata_struct. */ + if((userdata = (struct userdata_struct *)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; - overmalloc_safe_strcpy(userdata->data, work->work_group, size - sizeof(*userdata) - 1); + userdata->copy_fn = NULL; + userdata->free_fn = NULL; + userdata->userdata_len = strlen(work->work_group)+1; + overmalloc_safe_strcpy(userdata->data, work->work_group, size - sizeof(*userdata) - 1); - /* 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); - zero_free(userdata, size); + zero_free(userdata, size); } /*************************************************************** @@ -583,7 +573,7 @@ in workgroup %s on subnet %s\n", 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 @@ -600,5 +590,5 @@ local_master_browser_name for workgroup %s to workgroup name.\n", } #endif - fstrcpy(work->local_master_browser_name, newname); + nstrcpy(work->local_master_browser_name, newname); } |