From 2f2fc84a7c6724f6eab39bf301be70ba5bec15cc Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Tue, 10 May 2005 23:33:56 +0000
Subject: r6720: added support for the remaining 2 types of CLDAP netlogon
 response.

To work around the fact that the type of the returned data is not
encoded in the packet, this required adding ndr_pull_union_blob()
which allows us to pull a blob into a union with a specified switch
value, in this case the switch value comes from the calling NtVer field.
(This used to be commit bd27e626c27be72913d1a1569ee6e2e2711df84e)
---
 source4/librpc/ndr/libndr.h |  1 +
 source4/librpc/ndr/ndr.c    | 39 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)

(limited to 'source4/librpc/ndr')

diff --git a/source4/librpc/ndr/libndr.h b/source4/librpc/ndr/libndr.h
index 738e5d61c9..ddf9664b9b 100644
--- a/source4/librpc/ndr/libndr.h
+++ b/source4/librpc/ndr/libndr.h
@@ -138,6 +138,7 @@ struct ndr_print {
 
 /* useful macro for debugging */
 #define NDR_PRINT_DEBUG(type, p) ndr_print_debug((ndr_print_fn_t)ndr_print_ ##type, #p, p)
+#define NDR_PRINT_UNION_DEBUG(type, level, p) ndr_print_union_debug((ndr_print_fn_t)ndr_print_ ##type, #p, level, p)
 #define NDR_PRINT_FUNCTION_DEBUG(type, flags, p) ndr_print_function_debug((ndr_print_function_t)ndr_print_ ##type, #type, flags, p)
 #define NDR_PRINT_BOTH_DEBUG(type, p) NDR_PRINT_FUNCTION_DEBUG(type, NDR_BOTH, p)
 #define NDR_PRINT_OUT_DEBUG(type, p) NDR_PRINT_FUNCTION_DEBUG(type, NDR_OUT, p)
diff --git a/source4/librpc/ndr/ndr.c b/source4/librpc/ndr/ndr.c
index 79af5967c7..7beb64942a 100644
--- a/source4/librpc/ndr/ndr.c
+++ b/source4/librpc/ndr/ndr.c
@@ -324,6 +324,23 @@ void ndr_print_debug(ndr_print_fn_t fn, const char *name, void *ptr)
 	talloc_free(ndr);
 }
 
+/*
+  a useful helper function for printing idl unions via DEBUG()
+*/
+void ndr_print_union_debug(ndr_print_fn_t fn, const char *name, uint32_t level, void *ptr)
+{
+	struct ndr_print *ndr;
+
+	ndr = talloc_zero(NULL, struct ndr_print);
+	if (!ndr) return;
+	ndr->print = ndr_print_debug_helper;
+	ndr->depth = 1;
+	ndr->flags = 0;
+	ndr_print_set_switch_value(ndr, ptr, level);
+	fn(ndr, name, ptr);
+	talloc_free(ndr);
+}
+
 /*
   a useful helper function for printing idl function calls via DEBUG()
 */
@@ -780,6 +797,28 @@ NTSTATUS ndr_pull_struct_blob_all(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, vo
 	return status;
 }
 
+/*
+  pull a union from a blob using NDR, given the union discriminator
+*/
+NTSTATUS ndr_pull_union_blob(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, void *p,
+			     uint32_t level, ndr_pull_flags_fn_t fn)
+{
+	struct ndr_pull *ndr;
+	NTSTATUS status;
+
+	ndr = ndr_pull_init_blob(blob, mem_ctx);
+	if (!ndr) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	ndr_pull_set_switch_value(ndr, p, level);
+	status = fn(ndr, NDR_SCALARS|NDR_BUFFERS, p);
+	if (!NT_STATUS_IS_OK(status)) return status;
+	if (ndr->offset != ndr->data_size) {
+		return NT_STATUS_BUFFER_TOO_SMALL;
+	}
+	return status;
+}
+
 /*
   push a struct to a blob using NDR
 */
-- 
cgit