- a few portability fixes from Jim Myers

- added SMBD_LISTEN_BACKLOG in local.h

- added the beginnings of a ndr/rpc parsing framework for Samba4. It
  currently correctly parses security descriptors for the nttrans
  QUERY_SECDESC call, but I hope it will become a reasonable framework
  that an idl based generator can work to
(This used to be commit 9bf904fc34f88e0581f93656e73d3c01ca96f761)

1 files changed, 105 insertions, 0 deletions

diff --git a/source4/libcli/rpc/rpcparse.c b/source4/libcli/rpc/rpcparse.c
new file mode 100644
index 0000000000..41e6919b72
--- /dev/null
+++ b/source4/libcli/rpc/rpcparse.c
@@ -0,0 +1,105 @@
+/* 
+   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 MSNDR parsing functions
+*/
+
+#include "includes.h"
+
+/*
+  initialise a ndr parse structure from a data blob
+*/
+struct ndr_parse *ndr_parse_init_blob(DATA_BLOB *blob, TALLOC_CTX *mem_ctx)
+{
+	struct ndr_parse *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_parse_limit_size(struct ndr_parse *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_parse_advance(struct ndr_parse *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_parse_set_offset(struct ndr_parse *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_parse_save(struct ndr_parse *ndr, struct ndr_parse_save *save)
+{
+	save->offset = ndr->offset;
+	save->data_size = ndr->data_size;
+}
+
+/* restore the size/offset of a ndr structure */
+void ndr_parse_restore(struct ndr_parse *ndr, struct ndr_parse_save *save)
+{
+	ndr->offset = save->offset;
+	ndr->data_size = save->data_size;
+}