a major revamp of the low level dcerpc code in samba4, We can now do a

successful LSA OpenPolicy using smbtorture
(This used to be commit e925c315f55905060fcca1b188ae1f7e40baf514)

1 files changed, 184 insertions, 0 deletions

diff --git a/source4/libcli/ndr/ndr.c b/source4/libcli/ndr/ndr.c
new file mode 100644
index 0000000000..d9a5ff7735
--- /dev/null
+++ b/source4/libcli/ndr/ndr.c
@@ -0,0 +1,184 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   libndr interface
+
+   Copyright (C) Andrew Tridgell 2003
+   
+   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.
+*/
+
+/*
+  this provides the core routines for NDR parsing functions
+
+  see http://www.opengroup.org/onlinepubs/9629399/chap14.htm for details
+  of NDR encoding rules
+*/
+
+#include "includes.h"
+
+/*
+  initialise a ndr parse structure from a data blob
+*/
+struct ndr_pull *ndr_pull_init_blob(DATA_BLOB *blob, TALLOC_CTX *mem_ctx)
+{
+	struct ndr_pull *ndr;
+
+	ndr = talloc(mem_ctx, sizeof(*ndr));
+	if (!ndr) return NULL;
+
+	ndr->data = blob->data;
+	ndr->data_size = blob->length;
+	ndr->offset = 0;
+	ndr->mem_ctx = mem_ctx;
+
+	return ndr;
+}
+
+
+/* limit the remaining size of the current ndr parse structure to the
+   given size, starting at the given offset 
+
+   this is used when a ndr packet has an explicit size on the wire, and we
+   need to make sure that we don't use more data than is indicated
+
+   the 'ofs' parameter indicates how many bytes back from the current
+   offset in the buffer the 'size' number of bytes starts
+*/
+NTSTATUS ndr_pull_limit_size(struct ndr_pull *ndr, uint32 size, uint32 ofs)
+{
+	uint32 new_size;
+	new_size = ndr->offset + size - ofs;
+
+	if (new_size > ndr->data_size) {
+		return NT_STATUS_BUFFER_TOO_SMALL;
+	}
+	ndr->data_size = new_size;
+
+	return NT_STATUS_OK;
+}
+
+
+/*
+  advance by 'size' bytes
+*/
+NTSTATUS ndr_pull_advance(struct ndr_pull *ndr, uint32 size)
+{
+	ndr->offset += size;
+	if (ndr->offset > ndr->data_size) {
+		return NT_STATUS_BUFFER_TOO_SMALL;
+	}
+	return NT_STATUS_OK;
+}
+
+/*
+  set the parse offset to 'ofs'
+*/
+NTSTATUS ndr_pull_set_offset(struct ndr_pull *ndr, uint32 ofs)
+{
+	ndr->offset = ofs;
+	if (ndr->offset > ndr->data_size) {
+		return NT_STATUS_BUFFER_TOO_SMALL;
+	}
+	return NT_STATUS_OK;
+}
+
+/* save the offset/size of the current ndr state */
+void ndr_pull_save(struct ndr_pull *ndr, struct ndr_pull_save *save)
+{
+	save->offset = ndr->offset;
+	save->data_size = ndr->data_size;
+}
+
+/* restore the size/offset of a ndr structure */
+void ndr_pull_restore(struct ndr_pull *ndr, struct ndr_pull_save *save)
+{
+	ndr->offset = save->offset;
+	ndr->data_size = save->data_size;
+}
+
+
+
+
+/* create a ndr_push structure, ready for some marshalling */
+struct ndr_push *ndr_push_init(void)
+{
+	struct ndr_push *ndr;
+	TALLOC_CTX *mem_ctx = talloc_init("ndr_push_init");
+	if (!mem_ctx) return NULL;
+
+	ndr = talloc(mem_ctx, sizeof(*ndr));
+	if (!ndr) {
+		talloc_destroy(mem_ctx);
+		return NULL;
+	}
+
+	ndr->mem_ctx = mem_ctx;
+	ndr->flags = 0;
+	ndr->alloc_size = NDR_BASE_MARSHALL_SIZE;
+	ndr->data = talloc(ndr->mem_ctx, ndr->alloc_size);
+	if (!ndr->data) {
+		ndr_push_free(ndr);
+		return NULL;
+	}
+	ndr->offset = 0;
+	
+	return ndr;
+}
+
+/* free a ndr_push structure */
+void ndr_push_free(struct ndr_push *ndr)
+{
+	talloc_destroy(ndr->mem_ctx);
+}
+
+
+/* return a DATA_BLOB structure for the current ndr_push marshalled data */
+DATA_BLOB ndr_push_blob(struct ndr_push *ndr)
+{
+	DATA_BLOB blob;
+	blob.data = ndr->data;
+	blob.length = ndr->offset;
+	return blob;
+}
+
+
+/*
+  expand the available space in the buffer to 'size'
+*/
+NTSTATUS ndr_push_expand(struct ndr_push *ndr, uint32 size)
+{
+	if (ndr->alloc_size >= size) {
+		return NT_STATUS_OK;
+	}
+
+	ndr->alloc_size = size;
+	ndr->data = realloc(ndr->data, ndr->alloc_size);
+	if (!ndr->data) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  set the push offset to 'ofs'
+*/
+NTSTATUS ndr_push_set_offset(struct ndr_push *ndr, uint32 ofs)
+{
+	NDR_CHECK(ndr_push_expand(ndr, ofs));
+	ndr->offset = ofs;
+	return NT_STATUS_OK;
+}