--- /dev/null
+/*
+ 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 int ClientNMB;
+
+extern uint16 samba_nb_type;
+
+int workgroup_count = 0; /* unique index key: one for each workgroup */
+
+/****************************************************************************
+ Add a workgroup into the list.
+**************************************************************************/
+
+static void add_workgroup(struct subnet_record *subrec, struct work_record *work)
+{
+ work->subnet = subrec;
+ DLIST_ADD(subrec->workgrouplist, work);
+ subrec->work_changed = True;
+}
+
+/****************************************************************************
+ Copy name to unstring. Used by create_workgroup() and find_workgroup_on_subnet().
+**************************************************************************/
+
+static void name_to_unstring(unstring unname, const char *name)
+{
+ nstring nname;
+
+ errno = 0;
+ push_ascii_nstring(nname, name);
+ if (errno == E2BIG) {
+ unstring tname;
+ pull_ascii_nstring(tname, sizeof(tname), nname);
+ unstrcpy(unname, tname);
+ DEBUG(0,("name_to_nstring: workgroup name %s is too long. Truncating to %s\n",
+ name, tname));
+ } else {
+ unstrcpy(unname, name);
+ }
+}
+
+/****************************************************************************
+ Create an empty workgroup.
+**************************************************************************/
+
+static struct work_record *create_workgroup(const char *name, int ttl)
+{
+ struct work_record *work;
+ struct subnet_record *subrec;
+ int t = -1;
+
+ if((work = SMB_MALLOC_P(struct work_record)) == NULL) {
+ DEBUG(0,("create_workgroup: malloc fail !\n"));
+ return NULL;
+ }
+ memset((char *)work, '\0', sizeof(*work));
+
+ name_to_unstring(work->work_group, name);
+
+ work->serverlist = NULL;
+
+ work->RunningElection = False;
+ work->ElectionCount = 0;
+ work->announce_interval = 0;
+ work->needelection = False;
+ work->needannounce = True;
+ work->lastannounce_time = time(NULL);
+ work->mst_state = lp_local_master() ? MST_POTENTIAL : MST_NONE;
+ work->dom_state = DOMAIN_NONE;
+ work->log_state = LOGON_NONE;
+
+ work->death_time = (ttl != PERMANENT_TTL) ? time(NULL)+(ttl*3) : PERMANENT_TTL;
+
+ /* Make sure all token representations of workgroups are unique. */
+
+ for (subrec = FIRST_SUBNET; subrec && (t == -1); subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec)) {
+ struct work_record *w;
+ for (w = subrec->workgrouplist; w && t == -1; w = w->next) {
+ if (strequal(w->work_group, work->work_group))
+ t = w->token;
+ }
+ }
+
+ if (t == -1)
+ work->token = ++workgroup_count;
+ else
+ work->token = t;
+
+ /* No known local master browser as yet. */
+ *work->local_master_browser_name = '\0';
+
+ /* No known domain master browser as yet. */
+ *work->dmb_name.name = '\0';
+ zero_ip(&work->dmb_addr);
+
+ /* WfWg uses 01040b01 */
+ /* Win95 uses 01041501 */
+ /* NTAS uses ???????? */
+ work->ElectionCriterion = (MAINTAIN_LIST)|(BROWSER_ELECTION_VERSION<<8);
+ work->ElectionCriterion |= (lp_os_level() << 24);
+ if (lp_domain_master())
+ work->ElectionCriterion |= 0x80;
+
+ return work;
+}
+
+/*******************************************************************
+ Remove a workgroup.
+******************************************************************/
+
+static struct work_record *remove_workgroup_from_subnet(struct subnet_record *subrec,
+ struct work_record *work)
+{
+ struct work_record *ret_work = NULL;
+
+ DEBUG(3,("remove_workgroup: Removing workgroup %s\n", work->work_group));
+
+ ret_work = work->next;
+
+ remove_all_servers(work);
+
+ if (!work->serverlist) {
+ if (work->prev)
+ work->prev->next = work->next;
+ if (work->next)
+ work->next->prev = work->prev;
+
+ if (subrec->workgrouplist == work)
+ subrec->workgrouplist = work->next;
+
+ ZERO_STRUCTP(work);
+ SAFE_FREE(work);
+ }
+
+ subrec->work_changed = True;
+
+ return ret_work;
+}
+
+/****************************************************************************
+ Find a workgroup in the workgroup list of a subnet.
+**************************************************************************/
+
+struct work_record *find_workgroup_on_subnet(struct subnet_record *subrec,
+ const char *name)
+{
+ struct work_record *ret;
+ unstring un_name;
+
+ DEBUG(4, ("find_workgroup_on_subnet: workgroup search for %s on subnet %s: ",
+ name, subrec->subnet_name));
+
+ name_to_unstring(un_name, name);
+
+ for (ret = subrec->workgrouplist; ret; ret = ret->next) {
+ if (strequal(ret->work_group,un_name)) {
+ DEBUGADD(4, ("found.\n"));
+ return(ret);
+ }
+ }
+ DEBUGADD(4, ("not found.\n"));
+ return NULL;
+}
+
+/****************************************************************************
+ Create a workgroup in the workgroup list of the subnet.
+**************************************************************************/
+
+struct work_record *create_workgroup_on_subnet(struct subnet_record *subrec,
+ const char *name, int ttl)
+{
+ struct work_record *work = NULL;
+
+ DEBUG(4,("create_workgroup_on_subnet: creating group %s on subnet %s\n",
+ name, subrec->subnet_name));
+
+ if ((work = create_workgroup(name, ttl))) {
+ add_workgroup(subrec, work);
+ subrec->work_changed = True;
+ return(work);
+ }
+
+ return NULL;
+}
+
+/****************************************************************************
+ Update a workgroup ttl.
+**************************************************************************/
+
+void update_workgroup_ttl(struct work_record *work, int ttl)
+{
+ if(work->death_time != PERMANENT_TTL)
+ work->death_time = time(NULL)+(ttl*3);
+ work->subnet->work_changed = True;
+}
+
+/****************************************************************************
+ Fail function called if we cannot register the WORKGROUP<0> and
+ WORKGROUP<1e> names on the net.
+**************************************************************************/
+
+static void fail_register(struct subnet_record *subrec, struct response_record *rrec,
+ struct nmb_name *nmbname)
+{
+ DEBUG(0,("fail_register: Failed to register name %s on subnet %s.\n",
+ nmb_namestr(nmbname), subrec->subnet_name));
+}
+
+/****************************************************************************
+ If the workgroup is our primary workgroup, add the required names to it.
+**************************************************************************/
+
+void initiate_myworkgroup_startup(struct subnet_record *subrec, struct work_record *work)
+{
+ int i;
+
+ if(!strequal(lp_workgroup(), work->work_group))
+ return;
+
+ /* If this is a broadcast subnet then start elections on it if we are so configured. */
+
+ if ((subrec != unicast_subnet) && (subrec != remote_broadcast_subnet) &&
+ (subrec != wins_server_subnet) && lp_preferred_master() && lp_local_master()) {
+ DEBUG(3, ("initiate_myworkgroup_startup: preferred master startup for \
+workgroup %s on subnet %s\n", work->work_group, subrec->subnet_name));
+ work->needelection = True;
+ work->ElectionCriterion |= (1<<3);
+ }
+
+ /* Register the WORKGROUP<0> and WORKGROUP<1e> names on the network. */
+
+ register_name(subrec,lp_workgroup(),0x0,samba_nb_type|NB_GROUP, NULL, fail_register,NULL);
+ register_name(subrec,lp_workgroup(),0x1e,samba_nb_type|NB_GROUP, NULL, fail_register,NULL);
+
+ for( i = 0; my_netbios_names(i); i++) {
+ const char *name = my_netbios_names(i);
+ int stype = lp_default_server_announce() | (lp_local_master() ? SV_TYPE_POTENTIAL_BROWSER : 0 );
+
+ if(!strequal(global_myname(), name))
+ stype &= ~(SV_TYPE_MASTER_BROWSER|SV_TYPE_POTENTIAL_BROWSER|SV_TYPE_DOMAIN_MASTER|SV_TYPE_DOMAIN_MEMBER);
+
+ create_server_on_workgroup(work,name,stype|SV_TYPE_LOCAL_LIST_ONLY, PERMANENT_TTL,
+ string_truncate(lp_serverstring(), MAX_SERVER_STRING_LENGTH));
+ DEBUG(3,("initiate_myworkgroup_startup: Added server name entry %s \
+on subnet %s\n", name, subrec->subnet_name));
+ }
+}
+
+/****************************************************************************
+ Dump a copy of the workgroup database into the log file.
+ **************************************************************************/
+
+void dump_workgroups(BOOL force_write)
+{
+ struct subnet_record *subrec;
+ int debuglevel = force_write ? 0 : 4;
+
+ for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec)) {
+ if (subrec->workgrouplist) {
+ struct work_record *work;
+
+ if( DEBUGLVL( debuglevel ) ) {
+ dbgtext( "dump_workgroups()\n " );
+ dbgtext( "dump workgroup on subnet %15s: ", subrec->subnet_name );
+ dbgtext( "netmask=%15s:\n", inet_ntoa(subrec->mask_ip) );
+ }
+
+ for (work = subrec->workgrouplist; work; work = work->next) {
+ DEBUGADD( debuglevel, ( "\t%s(%d) current master browser = %s\n", work->work_group,
+ work->token, *work->local_master_browser_name ? work->local_master_browser_name : "UNKNOWN" ) );
+ if (work->serverlist) {
+ struct server_record *servrec;
+ for (servrec = work->serverlist; servrec; servrec = servrec->next) {
+ DEBUGADD( debuglevel, ( "\t\t%s %8x (%s)\n",
+ servrec->serv.name,
+ servrec->serv.type,
+ servrec->serv.comment ) );
+ }
+ }
+ }
+ }
+ }
+}
+
+/****************************************************************************
+ Expire any dead servers on all workgroups. If the workgroup has expired
+ remove it.
+ **************************************************************************/
+
+void expire_workgroups_and_servers(time_t t)
+{
+ struct subnet_record *subrec;
+
+ for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec)) {
+ struct work_record *work;
+ struct work_record *nextwork;
+
+ for (work = subrec->workgrouplist; work; work = nextwork) {
+ nextwork = work->next;
+ expire_servers(work, t);
+
+ if ((work->serverlist == NULL) && (work->death_time != PERMANENT_TTL) &&
+ ((t == (time_t)-1) || (work->death_time < t))) {
+ DEBUG(3,("expire_workgroups_and_servers: Removing timed out workgroup %s\n",
+ work->work_group));
+ remove_workgroup_from_subnet(subrec, work);
+ }
+ }
+ }
+}
projects / samba / blobdiff