Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 245 insertions, 0 deletions

diff --git a/source3/passdb/pdb_util.c b/source3/passdb/pdb_util.c
new file mode 100644
index 0000000..b732aca
--- /dev/null
+++ b/source3/passdb/pdb_util.c
@@ -0,0 +1,245 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  Authentication utility functions
+ *  Copyright (C) Andrew Tridgell 1992-1998
+ *  Copyright (C) Andrew Bartlett 2001
+ *  Copyright (C) Jeremy Allison 2000-2001
+ *  Copyright (C) Rafal Szczesniak 2002
+ *  Copyright (C) Volker Lendecke 2006
+ *  Copyright (C) Michael Adam 2007
+ *
+ *  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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "includes.h"
+#include "../libcli/security/security.h"
+#include "passdb.h"
+#include "lib/winbind_util.h"
+#include "../librpc/gen_ndr/idmap.h"
+
+/**
+ * Add sid as a member of builtin_sid.
+ *
+ * @param[in] builtin_sid	An existing builtin group.
+ * @param[in] dom_sid		sid to add as a member of builtin_sid.
+ * @return Normal NTSTATUS return
+ */
+static NTSTATUS add_sid_to_builtin(const struct dom_sid *builtin_sid,
+				   const struct dom_sid *dom_sid)
+{
+	NTSTATUS status;
+
+	if (!dom_sid || !builtin_sid) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	status = pdb_add_aliasmem(builtin_sid, dom_sid);
+
+	if (NT_STATUS_EQUAL(status, NT_STATUS_MEMBER_IN_ALIAS)) {
+		struct dom_sid_buf buf1, buf2;
+		DEBUG(5, ("add_sid_to_builtin %s is already a member of %s\n",
+			  dom_sid_str_buf(dom_sid, &buf1),
+			  dom_sid_str_buf(builtin_sid, &buf2)));
+		return NT_STATUS_OK;
+	}
+
+	if (!NT_STATUS_IS_OK(status)) {
+		struct dom_sid_buf buf1, buf2;
+		DEBUG(4, ("add_sid_to_builtin %s could not be added to %s: "
+			  "%s\n",
+			  dom_sid_str_buf(dom_sid, &buf1),
+			  dom_sid_str_buf(builtin_sid, &buf2),
+			  nt_errstr(status)));
+	}
+	return status;
+}
+
+/**
+ * Create the requested BUILTIN if it doesn't already exist.  This requires
+ * winbindd to be running.
+ *
+ * @param[in] rid BUILTIN rid to create
+ * @return Normal NTSTATUS return.
+ */
+NTSTATUS pdb_create_builtin(uint32_t rid)
+{
+	NTSTATUS status = NT_STATUS_OK;
+	struct dom_sid sid;
+	gid_t gid;
+	bool mapresult;
+
+	if (!sid_compose(&sid, &global_sid_Builtin, rid)) {
+		return NT_STATUS_NO_SUCH_ALIAS;
+	}
+
+	if (!pdb_is_responsible_for_builtin()) {
+		/*
+		 * if this backend is not responsible for BUILTIN
+		 *
+		 * Use the gid from the mapping request for entry.
+		 * If the mapping fails, bail out
+		 */
+		mapresult = sid_to_gid(&sid, &gid);
+		if (!mapresult) {
+			status = NT_STATUS_NO_SUCH_GROUP;
+		} else {
+			status = pdb_create_builtin_alias(rid, gid);
+		}
+	} else {
+		/*
+		 * this backend is responsible for BUILTIN
+		 *
+		 * a failed mapping result means that the entry
+		 * does not exist yet, so create it
+		 *
+		 * we use pdb_sid_to_id intentionally here to
+		 * directly query the passdb backend (sid_to_gid
+		 * would finally do the same)
+		 */
+		struct unixid id;
+		mapresult = pdb_sid_to_id(&sid, &id);
+		if (!mapresult) {
+			if (!lp_winbind_nested_groups() || !winbind_ping()) {
+				return NT_STATUS_PROTOCOL_UNREACHABLE;
+			}
+			status = pdb_create_builtin_alias(rid, 0);
+		}
+	}
+	return status;
+}
+
+/*******************************************************************
+*******************************************************************/
+
+NTSTATUS create_builtin_users(const struct dom_sid *dom_sid)
+{
+	NTSTATUS status;
+	struct dom_sid dom_users;
+
+	status = pdb_create_builtin(BUILTIN_RID_USERS);
+	if ( !NT_STATUS_IS_OK(status) ) {
+		DEBUG(5,("create_builtin_users: Failed to create Users\n"));
+		return status;
+	}
+
+	/* add domain users */
+	if ((IS_DC || (lp_server_role() == ROLE_DOMAIN_MEMBER)) &&
+	    (dom_sid != NULL) &&
+	    sid_compose(&dom_users, dom_sid, DOMAIN_RID_USERS))
+	{
+		status = add_sid_to_builtin(&global_sid_Builtin_Users,
+					    &dom_users);
+	}
+
+	return status;
+}
+
+/*******************************************************************
+*******************************************************************/
+
+NTSTATUS create_builtin_administrators(const struct dom_sid *dom_sid)
+{
+	NTSTATUS status;
+	struct dom_sid dom_admins, root_sid;
+	fstring root_name;
+	enum lsa_SidType type;
+	TALLOC_CTX *ctx;
+	bool ret;
+
+	status = pdb_create_builtin(BUILTIN_RID_ADMINISTRATORS);
+	if ( !NT_STATUS_IS_OK(status) ) {
+		DEBUG(5,("create_builtin_administrators: Failed to create Administrators\n"));
+		return status;
+	}
+
+	/* add domain admins */
+	if ((IS_DC || (lp_server_role() == ROLE_DOMAIN_MEMBER)) &&
+	    (dom_sid != NULL) &&
+	    sid_compose(&dom_admins, dom_sid, DOMAIN_RID_ADMINS))
+	{
+		status = add_sid_to_builtin(&global_sid_Builtin_Administrators,
+					    &dom_admins);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	}
+
+	/* add root */
+	if ( (ctx = talloc_init("create_builtin_administrators")) == NULL ) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	fstr_sprintf( root_name, "%s\\root", get_global_sam_name() );
+	ret = lookup_name(ctx, root_name, LOOKUP_NAME_DOMAIN, NULL, NULL,
+			  &root_sid, &type);
+	TALLOC_FREE( ctx );
+
+	if ( ret ) {
+		status = add_sid_to_builtin(&global_sid_Builtin_Administrators,
+					    &root_sid);
+	}
+
+	return status;
+}
+
+/*******************************************************************
+*******************************************************************/
+
+NTSTATUS create_builtin_guests(const struct dom_sid *dom_sid)
+{
+	NTSTATUS status;
+	struct dom_sid tmp_sid = { 0, };
+
+	status = pdb_create_builtin(BUILTIN_RID_GUESTS);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(5,("create_builtin_guests: Failed to create Guests\n"));
+		return status;
+	}
+
+	/* add local guest */
+	if (sid_compose(&tmp_sid, get_global_sam_sid(), DOMAIN_RID_GUEST)) {
+		status = add_sid_to_builtin(&global_sid_Builtin_Guests,
+					    &tmp_sid);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	}
+
+	/* add local guests */
+	if (sid_compose(&tmp_sid, get_global_sam_sid(), DOMAIN_RID_GUESTS)) {
+		status = add_sid_to_builtin(&global_sid_Builtin_Guests,
+					    &tmp_sid);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	}
+
+	if (lp_server_role() != ROLE_DOMAIN_MEMBER) {
+		return NT_STATUS_OK;
+	}
+
+	if (dom_sid == NULL) {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
+	/* add domain guests */
+	if (sid_compose(&tmp_sid, dom_sid, DOMAIN_RID_GUESTS)) {
+		status = add_sid_to_builtin(&global_sid_Builtin_Guests,
+					    &tmp_sid);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	}
+
+	return NT_STATUS_OK;
+}