s3:smbd: add support for SMB2 Ioctl

We don't implement any level yet.

metze

1 files changed, 271 insertions, 0 deletions

diff --git a/source3/smbd/smb2_ioctl.c b/source3/smbd/smb2_ioctl.c
new file mode 100644
index 0000000000..3ebce3eba8
--- /dev/null
+++ b/source3/smbd/smb2_ioctl.c
@@ -0,0 +1,271 @@
+/*
+   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/globals.h"
+#include "../source4/libcli/smb2/smb2_constants.h"
+
+static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
+					       struct tevent_context *ev,
+					       struct smbd_smb2_request *smb2req,
+					       uint32_t in_ctl_code,
+					       uint64_t in_file_id_volatile,
+					       DATA_BLOB in_input,
+					       uint32_t in_max_output,
+					       uint32_t in_flags);
+static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
+				     TALLOC_CTX *mem_ctx,
+				     DATA_BLOB *out_output);
+
+static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq);
+NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req)
+{
+	const uint8_t *inhdr;
+	const uint8_t *inbody;
+	int i = req->current_idx;
+	size_t expected_body_size = 0x39;
+	size_t body_size;
+	uint32_t in_ctl_code;
+	uint64_t in_file_id_persistent;
+	uint64_t in_file_id_volatile;
+	uint32_t in_input_offset;
+	uint32_t in_input_length;
+	DATA_BLOB in_input_buffer;
+	uint32_t in_max_output_length;
+	uint32_t in_flags;
+	struct tevent_req *subreq;
+
+	inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
+	if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
+		return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+	}
+
+	inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
+
+	body_size = SVAL(inbody, 0x00);
+	if (body_size != expected_body_size) {
+		return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+	}
+
+	in_ctl_code		= IVAL(inbody, 0x04);
+	in_file_id_persistent	= BVAL(inbody, 0x08);
+	in_file_id_volatile	= BVAL(inbody, 0x10);
+	in_input_offset		= IVAL(inbody, 0x18);
+	in_input_length		= IVAL(inbody, 0x1C);
+	in_max_output_length	= IVAL(inbody, 0x2C);
+	in_flags		= IVAL(inbody, 0x30);
+
+	if (in_input_offset != (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
+		return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+	}
+
+	if (in_input_length > req->in.vector[i+2].iov_len) {
+		return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+	}
+
+	in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
+	in_input_buffer.length = in_input_length;
+
+	if (in_file_id_persistent == UINT64_MAX &&
+	    in_file_id_volatile == UINT64_MAX) {
+		/* without a handle */
+	} else if (in_file_id_persistent != 0) {
+		return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
+	}
+
+	subreq = smbd_smb2_ioctl_send(req,
+				      req->conn->smb2.event_ctx,
+				      req,
+				      in_ctl_code,
+				      in_file_id_volatile,
+				      in_input_buffer,
+				      in_max_output_length,
+				      in_flags);
+	if (subreq == NULL) {
+		return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
+	}
+	tevent_req_set_callback(subreq, smbd_smb2_request_ioctl_done, req);
+	return NT_STATUS_OK;
+}
+
+static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq)
+{
+	struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
+					struct smbd_smb2_request);
+	int i = req->current_idx;
+	uint8_t *outhdr;
+	DATA_BLOB outbody;
+	DATA_BLOB outdyn;
+	uint32_t out_output_offset;
+	DATA_BLOB out_output_buffer;
+	NTSTATUS status;
+	NTSTATUS error; /* transport error */
+
+	status = smbd_smb2_ioctl_recv(subreq, req, &out_output_buffer);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		error = smbd_smb2_request_error(req, status);
+		if (!NT_STATUS_IS_OK(error)) {
+			smbd_server_connection_terminate(req->conn,
+							 nt_errstr(error));
+			return;
+		}
+		return;
+	}
+
+	out_output_offset = SMB2_HDR_BODY + 0x30;
+
+	outhdr = (uint8_t *)req->out.vector[i].iov_base;
+
+	outbody = data_blob_talloc(req->out.vector, NULL, 0x30);
+	if (outbody.data == NULL) {
+		error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
+		if (!NT_STATUS_IS_OK(error)) {
+			smbd_server_connection_terminate(req->conn,
+							 nt_errstr(error));
+			return;
+		}
+		return;
+	}
+
+	SSVAL(outbody.data, 0x00, 0x30 + 1);	/* struct size */
+	SSVAL(outbody.data, 0x02, 0);		/* reserved */
+	SIVAL(outbody.data, 0x04, 0);		/* ctl code */
+	SBVAL(outbody.data, 0x08, 0);		/* file id (persistent) */
+	SBVAL(outbody.data, 0x10, 0);		/* file id (volatile) */
+	SIVAL(outbody.data, 0x18, 0);		/* input offset */
+	SIVAL(outbody.data, 0x1C, 0);		/* input count */
+	SIVAL(outbody.data, 0x20,
+	      out_output_offset);		/* output offset */
+	SIVAL(outbody.data, 0x24,
+	      out_output_buffer.length);	/* output count */
+	SIVAL(outbody.data, 0x28, 0);		/* flags */
+	SIVAL(outbody.data, 0x2C, 0);		/* reserved */
+
+	/*
+	 * Note: Windows sends back also the input from the request.
+	 *       I think this is stupid and I hope not required.
+	 *       For now we avoid a talloc + memcopy here...
+	 */
+	outdyn = out_output_buffer;
+
+	error = smbd_smb2_request_done(req, outbody, &outdyn);
+	if (!NT_STATUS_IS_OK(error)) {
+		smbd_server_connection_terminate(req->conn,
+						 nt_errstr(error));
+		return;
+	}
+}
+
+struct smbd_smb2_ioctl_state {
+	struct smbd_smb2_request *smb2req;
+	struct smb_request *smbreq;
+	files_struct *fsp;
+	DATA_BLOB in_input;
+	uint32_t in_max_output;
+	DATA_BLOB out_output;
+};
+
+static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
+					       struct tevent_context *ev,
+					       struct smbd_smb2_request *smb2req,
+					       uint32_t in_ctl_code,
+					       uint64_t in_file_id_volatile,
+					       DATA_BLOB in_input,
+					       uint32_t in_max_output,
+					       uint32_t in_flags)
+{
+	struct tevent_req *req;
+	struct smbd_smb2_ioctl_state *state;
+	struct smb_request *smbreq;
+	files_struct *fsp = NULL;
+	struct tevent_req *subreq;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct smbd_smb2_ioctl_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->smb2req = smb2req;
+	state->smbreq = NULL;
+	state->fsp = NULL;
+	state->in_input = in_input;
+	state->in_max_output = in_max_output;
+	state->out_output = data_blob_null;
+
+	DEBUG(10,("smbd_smb2_ioctl: file_id[0x%016llX]\n",
+		  (unsigned long long)in_file_id_volatile));
+
+	smbreq = smbd_smb2_fake_smb_request(smb2req);
+	if (tevent_req_nomem(smbreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	state->smbreq = smbreq;
+
+	if (in_file_id_volatile != UINT64_MAX) {
+		fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
+		if (fsp == NULL) {
+			tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
+			return tevent_req_post(req, ev);
+		}
+		if (smbreq->conn != fsp->conn) {
+			tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
+			return tevent_req_post(req, ev);
+		}
+		if (smb2req->session->vuid != fsp->vuid) {
+			tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
+			return tevent_req_post(req, ev);
+		}
+		state->fsp = fsp;
+	}
+
+	switch (in_ctl_code) {
+	default:
+		if (IS_IPC(smbreq->conn)) {
+			tevent_req_nterror(req, NT_STATUS_FS_DRIVER_REQUIRED);
+			return tevent_req_post(req, ev);
+		}
+		tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
+		return tevent_req_post(req, ev);
+	}
+
+	tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+	return tevent_req_post(req, ev);
+}
+
+static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
+				     TALLOC_CTX *mem_ctx,
+				     DATA_BLOB *out_output)
+{
+	NTSTATUS status;
+	struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
+					      struct smbd_smb2_ioctl_state);
+
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+
+	*out_output = state->out_output;
+	talloc_steal(mem_ctx, out_output->data);
+
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}