Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 157 insertions, 0 deletions

diff --git a/source3/smbd/smb2_ioctl_dfs.c b/source3/smbd/smb2_ioctl_dfs.c
new file mode 100644
index 0000000..72893ca
--- /dev/null
+++ b/source3/smbd/smb2_ioctl_dfs.c
@@ -0,0 +1,157 @@
+/*
+   Unix SMB/CIFS implementation.
+   Core SMB2 server
+
+   Copyright (C) Stefan Metzmacher 2009
+
+   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 "smbd/smbd.h"
+#include "smbd/globals.h"
+#include "../libcli/smb/smb_common.h"
+#include "../lib/util/tevent_ntstatus.h"
+#include "include/ntioctl.h"
+#include "smb2_ioctl_private.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_SMB2
+
+static NTSTATUS fsctl_dfs_get_refers(TALLOC_CTX *mem_ctx,
+				     struct tevent_context *ev,
+				     struct connection_struct *conn,
+				     DATA_BLOB *in_input,
+				     uint32_t in_max_output,
+				     DATA_BLOB *out_output)
+{
+	uint16_t in_max_referral_level;
+	DATA_BLOB in_file_name_buffer;
+	char *in_file_name_string;
+	size_t in_file_name_string_size;
+	bool ok;
+	bool overflow = false;
+	NTSTATUS status;
+	int dfs_size;
+	char *dfs_data = NULL;
+	DATA_BLOB output;
+
+	if (!lp_host_msdfs()) {
+		return NT_STATUS_FS_DRIVER_REQUIRED;
+	}
+
+	if (in_input->length < (2 + 2)) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	in_max_referral_level = SVAL(in_input->data, 0);
+	in_file_name_buffer.data = in_input->data + 2;
+	in_file_name_buffer.length = in_input->length - 2;
+
+	ok = convert_string_talloc(mem_ctx, CH_UTF16, CH_UNIX,
+				   in_file_name_buffer.data,
+				   in_file_name_buffer.length,
+				   &in_file_name_string,
+				   &in_file_name_string_size);
+	if (!ok) {
+		return NT_STATUS_ILLEGAL_CHARACTER;
+	}
+
+	dfs_size = setup_dfs_referral(conn,
+				      in_file_name_string,
+				      in_max_referral_level,
+				      &dfs_data, &status);
+	if (dfs_size < 0) {
+		return status;
+	}
+
+	if (dfs_size > in_max_output) {
+		/*
+		 * TODO: we need a testsuite for this
+		 */
+		overflow = true;
+		dfs_size = in_max_output;
+	}
+
+	output = data_blob_talloc(mem_ctx, (uint8_t *)dfs_data, dfs_size);
+	SAFE_FREE(dfs_data);
+	if ((dfs_size > 0) && (output.data == NULL)) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	*out_output = output;
+
+	if (overflow) {
+		return STATUS_BUFFER_OVERFLOW;
+	}
+	return NT_STATUS_OK;
+}
+
+struct tevent_req *smb2_ioctl_dfs(uint32_t ctl_code,
+				  struct tevent_context *ev,
+				  struct tevent_req *req,
+				  struct smbd_smb2_ioctl_state *state)
+{
+	NTSTATUS status;
+
+	switch (ctl_code) {
+	case FSCTL_DFS_GET_REFERRALS:
+		status = fsctl_dfs_get_refers(state, ev, state->smbreq->conn,
+					      &state->in_input,
+					      state->in_max_output,
+					      &state->out_output);
+		if (!tevent_req_nterror(req, status)) {
+			tevent_req_done(req);
+		}
+		return tevent_req_post(req, ev);
+		break;
+	default: {
+		uint8_t *out_data = NULL;
+		uint32_t out_data_len = 0;
+
+		if (state->fsp == NULL) {
+			status = NT_STATUS_NOT_SUPPORTED;
+		} else {
+			status = SMB_VFS_FSCTL(state->fsp,
+					       state,
+					       ctl_code,
+					       state->smbreq->flags2,
+					       state->in_input.data,
+					       state->in_input.length,
+					       &out_data,
+					       state->in_max_output,
+					       &out_data_len);
+			state->out_output = data_blob_const(out_data, out_data_len);
+			if (NT_STATUS_IS_OK(status)) {
+				tevent_req_done(req);
+				return tevent_req_post(req, ev);
+			}
+		}
+
+		if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
+			if (IS_IPC(state->smbreq->conn)) {
+				status = NT_STATUS_FS_DRIVER_REQUIRED;
+			} else {
+				status = NT_STATUS_INVALID_DEVICE_REQUEST;
+			}
+		}
+
+		tevent_req_nterror(req, status);
+		return tevent_req_post(req, ev);
+		break;
+	}
+	}
+
+	tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+	return tevent_req_post(req, ev);
+}