proper wellknown sids initialization at startup

(This used to be commit 568feee8977ee1be210344c8ab1896512894cba2)

5 files changed, 90 insertions, 40 deletions

diff --git a/source3/nsswitch/winbindd.c b/source3/nsswitch/winbindd.c
index 1be5a18c7c3..da2540f5d98 100644
--- a/source3/nsswitch/winbindd.c
+++ b/source3/nsswitch/winbindd.c
@@ -757,6 +757,9 @@ BOOL winbind_setup_common(void)
 	if (!idmap_init())
 		return False;
 
+	if (!idmap_init_wellknown_sids())
+		return False;
+
 	/* Unblock all signals we are interested in as they may have been
 	   blocked by the parent process. */
 
diff --git a/source3/passdb/passdb.c b/source3/passdb/passdb.c
index 8631888fafb..bb40e38d0bd 100644
--- a/source3/passdb/passdb.c
+++ b/source3/passdb/passdb.c
@@ -37,7 +37,7 @@
  Fill the SAM_ACCOUNT with default values.
  ***********************************************************/
 
-static void pdb_fill_default_sam(SAM_ACCOUNT *user)
+void pdb_fill_default_sam(SAM_ACCOUNT *user)
 {
 	ZERO_STRUCT(user->private); /* Don't touch the talloc context */
 
@@ -296,7 +296,7 @@ NTSTATUS pdb_init_sam_new(SAM_ACCOUNT **new_sam_acct, const char *username)
 
 		/* set Domain Users by default ! */
 		sid_copy(&g_sid, get_global_sam_sid());
-		sid_append_rid(&g_sid,  DOMAIN_GROUP_RID_USERS);
+		sid_append_rid(&g_sid, DOMAIN_GROUP_RID_USERS);
 		pdb_set_group_sid(*new_sam_acct, &g_sid, PDB_SET);
 	}
 	return NT_STATUS_OK;
@@ -671,7 +671,7 @@ BOOL local_lookup_sid(DOM_SID *sid, char *name, enum SID_NAME_USE *psid_name_use
 	GROUP_MAP map;
 
 	if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid)){
-		DEBUG(0,("local_sid_to_gid: sid_peek_check_rid return False! SID: %s\n",
+		DEBUG(0,("local_lookup_sid: sid_peek_check_rid return False! SID: %s\n",
 			sid_string_static(&map.sid)));
 		return False;
 	}	
diff --git a/source3/passdb/pdb_guest.c b/source3/passdb/pdb_guest.c
index 7ecfa7d4c3c..9bcdccc7e7b 100644
--- a/source3/passdb/pdb_guest.c
+++ b/source3/passdb/pdb_guest.c
@@ -24,11 +24,16 @@
   Lookup a name in the SAM database
  ******************************************************************/
 
-static NTSTATUS guestsam_getsampwnam (struct pdb_methods *methods, SAM_ACCOUNT *user, const char *sname)
+static NTSTATUS guestsam_getsampwnam (struct pdb_methods *methods, SAM_ACCOUNT *sam_account, const char *sname)
 {
 	NTSTATUS nt_status;
-	struct passwd *pass;
 	const char *guest_account = lp_guestaccount();
+
+	if (!sam_account || !sname) {
+		DEBUG(0,("invalid name specified"));
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
 	if (!(guest_account && *guest_account)) {
 		DEBUG(1, ("NULL guest account!?!?\n"));
 		return NT_STATUS_UNSUCCESSFUL;
@@ -38,21 +43,31 @@ static NTSTATUS guestsam_getsampwnam (struct pdb_methods *methods, SAM_ACCOUNT *
 		DEBUG(0,("invalid methods\n"));
 		return NT_STATUS_UNSUCCESSFUL;
 	}
-	if (!sname) {
-		DEBUG(0,("invalid name specified"));
-		return NT_STATUS_UNSUCCESSFUL;
-	}
-
 	if (!strequal(guest_account, sname)) {
 		return NT_STATUS_NO_SUCH_USER;
 	}
 		
-	pass = getpwnam_alloc(guest_account);
-
-	nt_status = pdb_fill_sam_pw(user, pass);
+	pdb_fill_default_sam(sam_account);
+	
+	if (!pdb_set_username(sam_account, guest_account, PDB_SET))
+		return NT_STATUS_UNSUCCESSFUL;
+	
+	if (!pdb_set_fullname(sam_account, guest_account, PDB_SET))
+		return NT_STATUS_UNSUCCESSFUL;
+	
+	if (!pdb_set_domain(sam_account, lp_workgroup(), PDB_DEFAULT))
+		return NT_STATUS_UNSUCCESSFUL;
+	
+	if (!pdb_set_acct_ctrl(sam_account, ACB_NORMAL, PDB_DEFAULT))
+		return NT_STATUS_UNSUCCESSFUL;
+	
+	if (!pdb_set_user_sid_from_rid(sam_account, DOMAIN_USER_RID_GUEST, PDB_DEFAULT))
+		return NT_STATUS_UNSUCCESSFUL;
+	
+	if (!pdb_set_group_sid_from_rid(sam_account, DOMAIN_GROUP_RID_GUESTS, PDB_DEFAULT))
+		return NT_STATUS_UNSUCCESSFUL;
 
-	passwd_free(&pass);
-	return nt_status;
+	return NT_STATUS_OK;
 }
 
 
@@ -61,35 +76,17 @@ static NTSTATUS guestsam_getsampwnam (struct pdb_methods *methods, SAM_ACCOUNT *
  **************************************************************************/
 
 static NTSTATUS guestsam_getsampwrid (struct pdb_methods *methods, 
-				 SAM_ACCOUNT *user, uint32 rid)
+				 SAM_ACCOUNT *sam_account, uint32 rid)
 {
-	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
-	struct passwd *pass = NULL;
-	const char *guest_account = lp_guestaccount();
-	if (!(guest_account && *guest_account)) {
-		DEBUG(1, ("NULL guest account!?!?\n"));
-		return nt_status;
-	}
-
-	if (!methods) {
-		DEBUG(0,("invalid methods\n"));
-		return nt_status;
-	}
-	
-	if (rid == DOMAIN_USER_RID_GUEST) {
-		pass = getpwnam_alloc(guest_account);
-		if (!pass) {
-			DEBUG(1, ("guest account %s does not seem to exist...\n", guest_account));
-			return NT_STATUS_NO_SUCH_USER;
-		}
-	} else {
+	if (rid != DOMAIN_USER_RID_GUEST) {
 		return NT_STATUS_NO_SUCH_USER;
 	}
 
-	nt_status = pdb_fill_sam_pw(user, pass);
-	passwd_free(&pass);
+	if (!sam_account) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
 
-	return nt_status;
+	return guestsam_getsampwnam (methods, sam_account, lp_guestaccount());
 }
 
 static NTSTATUS guestsam_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT * user, const DOM_SID *sid)
@@ -97,6 +94,7 @@ static NTSTATUS guestsam_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT
 	uint32 rid;
 	if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid))
 		return NT_STATUS_NO_SUCH_USER;
+
 	return guestsam_getsampwrid(my_methods, user, rid);
 }
 
diff --git a/source3/sam/idmap_util.c b/source3/sam/idmap_util.c
index 5d089d3bafb..92cbb103db3 100644
--- a/source3/sam/idmap_util.c
+++ b/source3/sam/idmap_util.c
@@ -298,3 +298,49 @@ NTSTATUS sid_to_gid(const DOM_SID *sid, gid_t *gid)
 
 	return ret;
 }
+
+/* Initialize idmap withWellknown SIDs like Guest, that are necessary
+ * to make samba run properly */
+BOOL idmap_init_wellknown_sids(void)
+{
+	const char *guest_account = lp_guestaccount();
+	struct passwd *pass;
+	DOM_SID sid;
+	unid_t id;
+	int flags;
+
+	if (!(guest_account && *guest_account)) {
+		DEBUG(1, ("NULL guest account!?!?\n"));
+		return False;
+	}
+
+	pass = getpwnam_alloc(guest_account);
+	if (!pass) {
+		return False;
+	}
+
+	flags = ID_USERID;
+	id.uid = pass->pw_uid;
+	sid_copy(&sid, get_global_sam_sid());
+	sid_append_rid(&sid, DOMAIN_USER_RID_GUEST);
+	if (NT_STATUS_IS_ERR(idmap_set_mapping(&sid, id, flags))) {
+		passwd_free(&pass);
+		return False;
+	}
+
+	/* check if DOMAIN_GROUP_RID_GUESTS SID is set, if not store the
+	 * guest account gid as mapping */
+	flags = ID_GROUPID | ID_NOMAP;
+	sid_copy(&sid, get_global_sam_sid());
+	sid_append_rid(&sid, DOMAIN_GROUP_RID_GUESTS);
+	if (NT_STATUS_IS_ERR(idmap_get_id_from_sid(&id, &flags, &sid))) {
+		flags = ID_GROUPID;
+		id.gid = pass->pw_gid;
+		if (NT_STATUS_IS_ERR(idmap_set_mapping(&sid, id, flags))) {
+			passwd_free(&pass);
+			return False;
+		}
+	}
+
+	return True;
+}
diff --git a/source3/smbd/server.c b/source3/smbd/server.c
index b1b9192c096..ef27f0b7a4b 100644
--- a/source3/smbd/server.c
+++ b/source3/smbd/server.c
@@ -833,10 +833,13 @@ static BOOL init_structs(void )
 	if (!init_registry())
 		exit(1);
 
+	if(!initialize_password_db(False))
+		exit(1);
+
 	if (!idmap_init())
 		exit(1);
 
-	if(!initialize_password_db(False))
+	if (!idmap_init_wellknown_sids())
 		exit(1);
 
 	static_init_rpc;