first public release of samba4 code

(This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)

1 files changed, 228 insertions, 0 deletions

diff --git a/source4/nmbd/nmbd_mynames.c b/source4/nmbd/nmbd_mynames.c
new file mode 100644
index 0000000000..dd66821839
--- /dev/null
+++ b/source4/nmbd/nmbd_mynames.c
@@ -0,0 +1,228 @@
+/* 
+   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 uint16 samba_nb_type; /* Samba's NetBIOS type. */
+
+/****************************************************************************
+ Fail funtion when registering my netbios names.
+  **************************************************************************/
+
+static void my_name_register_failed(struct subnet_record *subrec,
+                              struct response_record *rrec, struct nmb_name *nmbname)
+{
+  DEBUG(0,("my_name_register_failed: Failed to register my name %s on subnet %s.\n",
+            nmb_namestr(nmbname), subrec->subnet_name));
+}
+
+
+/****************************************************************************
+  Add my workgroup and my given names to one subnet
+  Also add the magic Samba names.
+  **************************************************************************/
+void register_my_workgroup_one_subnet(struct subnet_record *subrec)
+{
+	int i;
+
+	struct work_record *work;
+
+	/* Create the workgroup on the subnet. */
+	if((work = create_workgroup_on_subnet(subrec, lp_workgroup(), 
+					      PERMANENT_TTL)) == NULL) {
+		DEBUG(0,("register_my_workgroup_and_names: Failed to create my workgroup %s on subnet %s. \
+Exiting.\n", lp_workgroup(), subrec->subnet_name));
+		return;
+	}
+
+	/* Each subnet entry, except for the wins_server_subnet has
+           the magic Samba names. */
+	add_samba_names_to_subnet(subrec);
+
+	/* Register all our names including aliases. */
+	for (i=0; my_netbios_names(i); i++) {
+		register_name(subrec, my_netbios_names(i),0x20,samba_nb_type,
+			      NULL,
+			      my_name_register_failed, NULL);
+		register_name(subrec, my_netbios_names(i),0x03,samba_nb_type,
+			      NULL,
+			      my_name_register_failed, NULL);
+		register_name(subrec, my_netbios_names(i),0x00,samba_nb_type,
+			      NULL,
+			      my_name_register_failed, NULL);
+	}
+	
+	/* Initiate election processing, register the workgroup names etc. */
+	initiate_myworkgroup_startup(subrec, work);
+}
+
+/*******************************************************************
+ Utility function to add a name to the unicast subnet, or add in
+ our IP address if it already exists.
+******************************************************************/
+
+static void insert_refresh_name_into_unicast( struct subnet_record *subrec,
+                                                struct nmb_name *nmbname, uint16 nb_type )
+{
+  struct name_record *namerec;
+
+  if (!we_are_a_wins_client()) {
+    insert_permanent_name_into_unicast(subrec, nmbname, nb_type);
+    return;
+  }
+
+  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,
+                              MIN(lp_max_ttl(), MAX_REFRESH_TIME), SELF_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);
+  }
+}
+
+/****************************************************************************
+  Add my workgroup and my given names to the subnet lists.
+  Also add the magic Samba names.
+  **************************************************************************/
+
+BOOL register_my_workgroup_and_names(void)
+{
+  struct subnet_record *subrec;
+  int i;
+
+  for(subrec = FIRST_SUBNET; 
+      subrec; 
+      subrec = NEXT_SUBNET_INCLUDING_UNICAST(subrec))
+  {
+	  register_my_workgroup_one_subnet(subrec);
+  }
+
+  /* We still need to add the magic Samba
+     names and the netbios names to the unicast subnet directly. This is
+     to allow unicast node status requests and queries to still work
+     in a broadcast only environment. */
+
+  add_samba_names_to_subnet(unicast_subnet);
+
+  for (i=0; my_netbios_names(i); i++)
+  {
+    for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec))
+    {
+      /*
+       * Ensure all the IP addresses are added if we are multihomed.
+       */
+      struct nmb_name nmbname;
+
+      make_nmb_name(&nmbname, my_netbios_names(i),0x20);
+      insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type);
+
+      make_nmb_name(&nmbname, my_netbios_names(i),0x3);
+      insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type);
+
+      make_nmb_name(&nmbname, my_netbios_names(i),0x0);
+      insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type);
+    }
+  }
+
+  /*
+   * Add the WORKGROUP<0> and WORKGROUP<1e> group names to the unicast subnet
+   * also for the same reasons.
+   */
+
+  for(subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec))
+  {
+    /*
+     * Ensure all the IP addresses are added if we are multihomed.
+     */
+    struct nmb_name nmbname;
+
+    make_nmb_name(&nmbname, lp_workgroup(), 0x0);
+    insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type|NB_GROUP);
+
+    make_nmb_name(&nmbname, lp_workgroup(), 0x1e);
+    insert_refresh_name_into_unicast(subrec, &nmbname, samba_nb_type|NB_GROUP);
+  }
+
+  /*
+   * We need to add the Samba names to the remote broadcast subnet,
+   * as NT 4.x does directed broadcast requests to the *<0x0> name.
+   */
+  add_samba_names_to_subnet(remote_broadcast_subnet);
+
+  return True;
+}
+
+/****************************************************************************
+  Remove all the names we registered.
+**************************************************************************/
+void release_wins_names(void)
+{
+	struct subnet_record *subrec = unicast_subnet;
+	struct name_record *namerec, *nextnamerec;
+
+	for (namerec = (struct name_record *)ubi_trFirst( subrec->namelist );
+	     namerec;
+	     namerec = nextnamerec) {
+		nextnamerec = (struct name_record *)ubi_trNext( namerec );
+		if( (namerec->data.source == SELF_NAME)
+		    && !NAME_IS_DEREGISTERING(namerec) )
+			release_name( subrec, namerec, standard_success_release,
+				      NULL, NULL);
+	}
+}
+
+/*******************************************************************
+  Refresh our registered names with WINS
+  ******************************************************************/
+void refresh_my_names(time_t t)
+{
+	struct name_record *namerec;
+
+	if (wins_srv_count() < 1) return;
+
+	for (namerec = (struct name_record *)ubi_trFirst(unicast_subnet->namelist);
+	     namerec;
+	     namerec = (struct name_record *)ubi_trNext(namerec)) {
+		/* Each SELF name has an individual time to be refreshed. */
+		if ((namerec->data.source == SELF_NAME) &&
+		    (namerec->data.refresh_time < t) &&
+		    (namerec->data.death_time != PERMANENT_TTL)) {
+			/* We cheat here and pretend the refresh is going to be
+			   successful & update the refresh times. This stops
+			   multiple refresh calls being done. We actually
+			   deal with refresh failure in the fail_fn.
+			*/
+			if (!is_refresh_already_queued(unicast_subnet, namerec)) {
+				wins_refresh_name(namerec);
+			}
+			namerec->data.death_time = t + lp_max_ttl();
+			namerec->data.refresh_time = t + MIN(lp_max_ttl()/2, MAX_REFRESH_TIME);
+		}
+	}
+}