s4-dns: Added support for multiple DNS_RPC_RECORDS structures

Windows returns multiple DNS_RPC_RECORDS structures, but there is
no well defined structure in [MS-DNSP] doc. Added hand-written
code to parse ndr.

Pair-Programmed-With: Andrew Tridgell <tridge@samba.org>

Signed-off-by: Andrew Tridgell <tridge@samba.org>

4 files changed, 93 insertions, 3 deletions

diff --git a/librpc/idl/dnsserver.idl b/librpc/idl/dnsserver.idl
index 0868d6fb6a..306414e979 100644
--- a/librpc/idl/dnsserver.idl
+++ b/librpc/idl/dnsserver.idl
@@ -9,7 +9,9 @@ import "misc.idl", "dnsp.idl";
 [ uuid("50abc2a4-574d-40b3-9d66-ee4fd5fba076"),
   version(5.0),
   pointer_default(unique),
-  helpstring("DNS Server")
+  endpoint("ncacn_ip_tcp:", "ncacn_np:[\\pipe\\dnsserver]"),
+  helper("../librpc/ndr/ndr_dnsserver.h"),
+  helpstring("DNS Management Server")
 ] interface dnsserver
 {
 
@@ -1499,7 +1501,7 @@ import "misc.idl", "dnsp.idl";
 		[in,unique,string,charset(UTF8)]  uint8                *pszFilterStart,
 		[in,unique,string,charset(UTF8)]  uint8                *pszFilterStop,
 		[out]                             uint32               *pdwBufferLength,
-		[out,unique,subcontext(4),subcontext_size(*pdwBufferLength)] DNS_RPC_RECORDS *pBuffer
+		[out,ref,subcontext(4),subcontext_size(*pdwBufferLength)] DNS_RPC_RECORDS_ARRAY **pBuffer
         );
 
 	WERROR DnssrvUpdateRecord2(
diff --git a/librpc/ndr/ndr_dnsserver.c b/librpc/ndr/ndr_dnsserver.c
new file mode 100644
index 0000000000..5eaa7cadb8
--- /dev/null
+++ b/librpc/ndr/ndr_dnsserver.c
@@ -0,0 +1,63 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Manually parsed structures for DNSSERVER
+
+   Copyright (C) Amitay Isaacs 2011
+
+   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_dnsp.h"
+#include "librpc/gen_ndr/ndr_dnsserver.h"
+
+/*
+ * parsing DNS_RPC_RECORDS_ARRAY
+ */
+
+enum ndr_err_code ndr_pull_DNS_RPC_RECORDS_ARRAY(struct ndr_pull *ndr,
+		int ndr_flags, struct DNS_RPC_RECORDS_ARRAY *rec)
+{
+	rec->count = 0;
+	rec->rec = talloc_array(ndr->current_mem_ctx, struct DNS_RPC_RECORDS, rec->count);
+	if (! rec->rec) {
+		return ndr_pull_error(ndr, NDR_ERR_ALLOC, "Failed to pull DNS_RPC_RECORDS_ARRAY");
+	}
+
+	while (ndr->offset < ndr->data_size) {
+		rec->rec = talloc_realloc(ndr->current_mem_ctx, rec->rec, struct DNS_RPC_RECORDS, rec->count+1);
+		if (! rec->rec) {
+			return ndr_pull_error(ndr, NDR_ERR_ALLOC, "Failed to pull DNS_RPC_RECORDS_ARRAY");
+		}
+		NDR_CHECK(ndr_pull_DNS_RPC_RECORDS(ndr, ndr_flags, &rec->rec[rec->count]));
+		NDR_PULL_ALIGN(ndr, 4);
+		rec->count++;
+	}
+
+	return NDR_ERR_SUCCESS;
+}
+
+enum ndr_err_code ndr_push_DNS_RPC_RECORDS_ARRAY(struct ndr_push *ndr,
+		int ndr_flags, const struct DNS_RPC_RECORDS_ARRAY *rec)
+{
+	int i;
+
+	for (i=0; i<rec->count; i++) {
+		NDR_CHECK(ndr_push_DNS_RPC_RECORDS(ndr, ndr_flags, &rec->rec[i]));
+		NDR_PUSH_ALIGN(ndr, 4);
+	}
+
+	return NDR_ERR_SUCCESS;
+}
diff --git a/librpc/ndr/ndr_dnsserver.h b/librpc/ndr/ndr_dnsserver.h
new file mode 100644
index 0000000000..68eb863a73
--- /dev/null
+++ b/librpc/ndr/ndr_dnsserver.h
@@ -0,0 +1,25 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Manually parsed structures for DNSSERVER
+
+   Copyright (C) Amitay Isaacs 2011
+
+   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/>.
+*/
+
+enum ndr_err_code ndr_pull_DNS_RPC_RECORDS_ARRAY(struct ndr_pull *ndr,
+		int ndr_flags, struct DNS_RPC_RECORDS_ARRAY *rec);
+enum ndr_err_code ndr_push_DNS_RPC_RECORDS_ARRAY(struct ndr_push *ndr,
+		int ndr_flags, const struct DNS_RPC_RECORDS_ARRAY *rec);
diff --git a/librpc/wscript_build b/librpc/wscript_build
index 2019a0429f..14289a1e91 100644
--- a/librpc/wscript_build
+++ b/librpc/wscript_build
@@ -26,7 +26,7 @@ bld.SAMBA_SUBSYSTEM('NDR_NAMED_PIPE_AUTH',
 	)
 
 bld.SAMBA_SUBSYSTEM('NDR_DNSSERVER',
-	source='gen_ndr/ndr_dnsserver.c',
+	source='gen_ndr/ndr_dnsserver.c ndr/ndr_dnsserver.c',
 	public_deps='ndr'
 	)