librpc: add custom odj_switch_level_from_guid()

This function maintains an arbitrary mapping of GUID strings to
integers. This is required as only integers can be used as
discriminators for autogenerated ODJ unions.

Guenther

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>

4 files changed, 95 insertions, 1 deletions

diff --git a/librpc/idl/ODJ.idl b/librpc/idl/ODJ.idl
index b33d3db7f11..429db5518a8 100644
--- a/librpc/idl/ODJ.idl
+++ b/librpc/idl/ODJ.idl
@@ -28,6 +28,13 @@ import "misc.idl", "lsa.idl", "netlogon.idl", "security.idl";
 
 cpp_quote("#define OP_JP2_FLAG_PERSISTENTSITE    0x00000001")
 
+[
+  uuid("11111111-3333-5555-7777-99999999"),
+  version(0.0),
+  pointer_default(unique),
+  helpstring("Offline Domain Join IDL"),
+  helper("../librpc/ndr/ndr_ODJ.h")
+]
 interface ODJ
 {
 	typedef struct {
diff --git a/librpc/ndr/ndr_ODJ.c b/librpc/ndr/ndr_ODJ.c
new file mode 100644
index 00000000000..86630b88827
--- /dev/null
+++ b/librpc/ndr/ndr_ODJ.c
@@ -0,0 +1,65 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   routines for marshalling/unmarshalling special ODJ structures
+
+   Copyright (C) Guenther Deschner 2021
+
+   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 "../librpc/gen_ndr/ndr_ODJ.h"
+#include "../librpc/ndr/ndr_ODJ.h"
+
+uint32_t odj_switch_level_from_guid(const struct GUID *r)
+{
+	struct {
+		uint16_t level;
+		const char *guid;
+	} levels[] = {
+		{
+			.level	= 1,
+			.guid	= ODJ_GUID_JOIN_PROVIDER
+		},{
+			.level	= 2,
+			.guid	= ODJ_GUID_JOIN_PROVIDER2
+		},{
+			.level	= 3,
+			.guid	= ODJ_GUID_JOIN_PROVIDER3
+		},{
+			.level	= 4,
+			.guid	= ODJ_GUID_CERT_PROVIDER
+		},{
+			.level	= 5,
+			.guid	= ODJ_GUID_POLICY_PROVIDER
+		}
+	};
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(levels); i++) {
+		struct GUID guid;
+		NTSTATUS status;
+
+		status = GUID_from_string(levels[i].guid, &guid);
+		if (!NT_STATUS_IS_OK(status)) {
+			return 0;
+		}
+		if (GUID_equal(&guid, r)) {
+			return levels[i].level;
+		}
+	}
+
+	return 0;
+}
diff --git a/librpc/ndr/ndr_ODJ.h b/librpc/ndr/ndr_ODJ.h
new file mode 100644
index 00000000000..f57f2d77437
--- /dev/null
+++ b/librpc/ndr/ndr_ODJ.h
@@ -0,0 +1,22 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   routines for marshalling/unmarshalling special ODJ structures
+
+   Copyright (C) Guenther Deschner 2021
+
+   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/>.
+*/
+
+uint32_t odj_switch_level_from_guid(const struct GUID *r);
diff --git a/librpc/wscript_build b/librpc/wscript_build
index 3354806349f..b82209b4299 100644
--- a/librpc/wscript_build
+++ b/librpc/wscript_build
@@ -362,7 +362,7 @@ bld.SAMBA_SUBSYSTEM('NDR_DRSBLOBS',
     )
 
 bld.SAMBA_SUBSYSTEM('NDR_ODJ',
-    source='gen_ndr/ndr_ODJ.c',
+    source='gen_ndr/ndr_ODJ.c ndr/ndr_ODJ.c',
     public_deps='NDR_LSA NDR_NETLOGON NDR_SECURITY',
     deps='ndr')