libcli/smb: move smb2cli_ioctl.c from source3 to the toplevel

Signed-off-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Tue May 15 20:17:01 CEST 2012 on sn-devel-104

3 files changed, 370 insertions, 0 deletions

diff --git a/libcli/smb/smb2cli_ioctl.c b/libcli/smb/smb2cli_ioctl.c
new file mode 100644
index 0000000000..2881c742ce
--- /dev/null
+++ b/libcli/smb/smb2cli_ioctl.c
@@ -0,0 +1,335 @@
+/*
+   Unix SMB/CIFS implementation.
+   smb2 lib
+   Copyright (C) Stefan Metzmacher 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 "system/network.h"
+#include "lib/util/tevent_ntstatus.h"
+#include "smb_common.h"
+#include "smbXcli_base.h"
+#include "librpc/ndr/libndr.h"
+
+struct smb2cli_ioctl_state {
+	uint8_t fixed[0x38];
+	uint8_t dyn_pad[1];
+	uint32_t max_input_length;
+	uint32_t max_output_length;
+	struct iovec *recv_iov;
+	DATA_BLOB out_input_buffer;
+	DATA_BLOB out_output_buffer;
+};
+
+static void smb2cli_ioctl_done(struct tevent_req *subreq);
+
+struct tevent_req *smb2cli_ioctl_send(TALLOC_CTX *mem_ctx,
+				      struct tevent_context *ev,
+				      struct smbXcli_conn *conn,
+				      uint32_t timeout_msec,
+				      struct smbXcli_session *session,
+				      uint32_t tcon_id,
+				      uint64_t in_fid_persistent,
+				      uint64_t in_fid_volatile,
+				      uint32_t in_ctl_code,
+				      uint32_t in_max_input_length,
+				      const DATA_BLOB *in_input_buffer,
+				      uint32_t in_max_output_length,
+				      const DATA_BLOB *in_output_buffer,
+				      uint32_t in_flags)
+{
+	struct tevent_req *req, *subreq;
+	struct smb2cli_ioctl_state *state;
+	uint8_t *fixed;
+	uint8_t *dyn;
+	size_t dyn_len;
+	uint32_t input_buffer_offset = 0;
+	uint32_t input_buffer_length = 0;
+	uint32_t output_buffer_offset = 0;
+	uint32_t output_buffer_length = 0;
+	uint32_t pad_length = 0;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct smb2cli_ioctl_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->max_input_length = in_max_input_length;
+	state->max_output_length = in_max_output_length;
+
+	if (in_input_buffer) {
+		input_buffer_offset = SMB2_HDR_BODY+0x38;
+		input_buffer_length = in_input_buffer->length;
+	}
+
+	if (in_output_buffer) {
+		output_buffer_offset = SMB2_HDR_BODY+0x38;
+		if (input_buffer_length > 0) {
+			uint32_t tmp;
+			output_buffer_offset += input_buffer_length;
+			tmp = output_buffer_offset;
+			output_buffer_offset = NDR_ROUND(output_buffer_offset, 8);
+			pad_length = output_buffer_offset - tmp;
+		}
+		output_buffer_length = in_output_buffer->length;
+	}
+
+	fixed = state->fixed;
+
+	SSVAL(fixed, 0x00, 0x39);
+	SSVAL(fixed, 0x02, 0); /* reserved */
+	SIVAL(fixed, 0x04, in_ctl_code);
+	SBVAL(fixed, 0x08, in_fid_persistent);
+	SBVAL(fixed, 0x10, in_fid_volatile);
+	SIVAL(fixed, 0x18, input_buffer_offset);
+	SIVAL(fixed, 0x1C, input_buffer_length);
+	SIVAL(fixed, 0x20, in_max_input_length);
+	SIVAL(fixed, 0x24, output_buffer_offset);
+	SIVAL(fixed, 0x28, output_buffer_length);
+	SIVAL(fixed, 0x2C, in_max_output_length);
+	SIVAL(fixed, 0x30, in_flags);
+	SIVAL(fixed, 0x34, 0); /* reserved */
+
+	if (input_buffer_length > 0 && output_buffer_length > 0) {
+		size_t avail = UINT32_MAX - (input_buffer_length + pad_length);
+		size_t ofs = output_buffer_offset - input_buffer_offset;
+
+		if (avail < output_buffer_length) {
+			tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER_MIX);
+			return tevent_req_post(req, ev);
+		}
+
+		dyn_len = input_buffer_length + output_buffer_length + pad_length;
+
+		dyn = talloc_zero_array(state, uint8_t, dyn_len);
+		if (tevent_req_nomem(dyn, req)) {
+			return tevent_req_post(req, ev);
+		}
+		memcpy(dyn, in_input_buffer->data,
+		       in_input_buffer->length);
+		memcpy(dyn + ofs, in_output_buffer->data,
+		       in_output_buffer->length);
+	} else if (input_buffer_length > 0) {
+		dyn = in_input_buffer->data;
+		dyn_len = in_input_buffer->length;
+	} else if (output_buffer_length > 0) {
+		dyn = in_output_buffer->data;
+		dyn_len = in_output_buffer->length;
+	} else {
+		dyn = state->dyn_pad;
+		dyn_len = sizeof(state->dyn_pad);
+	}
+
+	subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_IOCTL,
+				  0, 0, /* flags */
+				  timeout_msec,
+				  0xFEFF, /* pid */
+				  tcon_id,
+				  session,
+				  state->fixed, sizeof(state->fixed),
+				  dyn, dyn_len);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, smb2cli_ioctl_done, req);
+	return req;
+}
+
+static void smb2cli_ioctl_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req =
+		tevent_req_callback_data(subreq,
+		struct tevent_req);
+	struct smb2cli_ioctl_state *state =
+		tevent_req_data(req,
+		struct smb2cli_ioctl_state);
+	NTSTATUS status;
+	struct iovec *iov;
+	uint8_t *fixed;
+	uint8_t *dyn;
+	size_t dyn_len;
+	uint32_t dyn_ofs = SMB2_HDR_BODY + 0x30;
+	uint32_t input_buffer_offset;
+	uint32_t input_buffer_length;
+	uint32_t output_buffer_offset;
+	uint32_t output_buffer_length;
+	static const struct smb2cli_req_expected_response expected[] = {
+	{
+		.status = NT_STATUS_OK,
+		.body_size = 0x31
+	},
+	{
+		.status = STATUS_BUFFER_OVERFLOW,
+		.body_size = 0x31
+	}
+	};
+
+	status = smb2cli_req_recv(subreq, state, &iov,
+				  expected, ARRAY_SIZE(expected));
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	state->recv_iov = iov;
+	fixed = (uint8_t *)iov[1].iov_base;
+	dyn = (uint8_t *)iov[2].iov_base;
+	dyn_len = iov[2].iov_len;
+
+	input_buffer_offset = IVAL(fixed, 0x18);
+	input_buffer_length = IVAL(fixed, 0x1C);
+	output_buffer_offset = IVAL(fixed, 0x20);
+	output_buffer_length = IVAL(fixed, 0x24);
+
+	if ((input_buffer_offset > 0) && (input_buffer_length > 0)) {
+		uint32_t ofs;
+
+		if (input_buffer_offset != dyn_ofs) {
+			tevent_req_nterror(
+				req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			return;
+		}
+
+		if (input_buffer_length < dyn_len) {
+			tevent_req_nterror(
+				req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			return;
+		}
+
+		if (input_buffer_length > state->max_input_length) {
+			tevent_req_nterror(
+				req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			return;
+		}
+
+		state->out_input_buffer.data = dyn;
+		state->out_input_buffer.length = input_buffer_length;
+
+		ofs = input_buffer_length;
+		ofs = NDR_ROUND(ofs, 8);
+
+		dyn_ofs += ofs;
+		dyn += ofs;
+		dyn_len -= ofs;
+	}
+
+	if ((output_buffer_offset > 0) && (output_buffer_length > 0)) {
+		if (output_buffer_offset != dyn_ofs) {
+			tevent_req_nterror(
+				req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			return;
+		}
+
+		if (output_buffer_length < dyn_len) {
+			tevent_req_nterror(
+				req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			return;
+		}
+
+		if (output_buffer_length > state->max_output_length) {
+			tevent_req_nterror(
+				req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			return;
+		}
+
+		state->out_output_buffer.data = dyn;
+		state->out_output_buffer.length = output_buffer_length;
+	}
+
+	tevent_req_done(req);
+}
+
+NTSTATUS smb2cli_ioctl_recv(struct tevent_req *req,
+			    TALLOC_CTX *mem_ctx,
+			    DATA_BLOB *out_input_buffer,
+			    DATA_BLOB *out_output_buffer)
+{
+	struct smb2cli_ioctl_state *state =
+		tevent_req_data(req,
+		struct smb2cli_ioctl_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+
+	talloc_steal(mem_ctx, state->recv_iov);
+	if (out_input_buffer) {
+		*out_input_buffer = state->out_input_buffer;
+	}
+	if (out_output_buffer) {
+		*out_output_buffer = state->out_output_buffer;
+	}
+
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}
+
+NTSTATUS smb2cli_ioctl(struct smbXcli_conn *conn,
+		       uint32_t timeout_msec,
+		       struct smbXcli_session *session,
+		       uint32_t tcon_id,
+		       uint64_t in_fid_persistent,
+		       uint64_t in_fid_volatile,
+		       uint32_t in_ctl_code,
+		       uint32_t in_max_input_length,
+		       const DATA_BLOB *in_input_buffer,
+		       uint32_t in_max_output_length,
+		       const DATA_BLOB *in_output_buffer,
+		       uint32_t in_flags,
+		       TALLOC_CTX *mem_ctx,
+		       DATA_BLOB *out_input_buffer,
+		       DATA_BLOB *out_output_buffer)
+{
+	TALLOC_CTX *frame = talloc_stackframe();
+	struct tevent_context *ev;
+	struct tevent_req *req;
+	NTSTATUS status = NT_STATUS_NO_MEMORY;
+
+	if (smbXcli_conn_has_async_calls(conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER_MIX;
+		goto fail;
+	}
+	ev = tevent_context_init(frame);
+	if (ev == NULL) {
+		goto fail;
+	}
+	req = smb2cli_ioctl_send(frame, ev, conn, timeout_msec,
+				 session, tcon_id,
+				 in_fid_persistent,
+				 in_fid_volatile,
+				 in_ctl_code,
+				 in_max_input_length,
+				 in_input_buffer,
+				 in_max_output_length,
+				 in_output_buffer,
+				 in_flags);
+	if (req == NULL) {
+		goto fail;
+	}
+	if (!tevent_req_poll_ntstatus(req, ev, &status)) {
+		goto fail;
+	}
+	status = smb2cli_ioctl_recv(req, mem_ctx,
+				    out_input_buffer,
+				    out_output_buffer);
+ fail:
+	TALLOC_FREE(frame);
+	return status;
+}
diff --git a/libcli/smb/smbXcli_base.h b/libcli/smb/smbXcli_base.h
index 9d0db39eb8..81a8e93ade 100644
--- a/libcli/smb/smbXcli_base.h
+++ b/libcli/smb/smbXcli_base.h
@@ -501,4 +501,38 @@ NTSTATUS smb2cli_query_directory(struct smbXcli_conn *conn,
 				 uint8_t **data,
 				 uint32_t *data_length);
 
+struct tevent_req *smb2cli_ioctl_send(TALLOC_CTX *mem_ctx,
+				      struct tevent_context *ev,
+				      struct smbXcli_conn *conn,
+				      uint32_t timeout_msec,
+				      struct smbXcli_session *session,
+				      uint32_t tcon_id,
+				      uint64_t in_fid_persistent,
+				      uint64_t in_fid_volatile,
+				      uint32_t in_ctl_code,
+				      uint32_t in_max_input_length,
+				      const DATA_BLOB *in_input_buffer,
+				      uint32_t in_max_output_length,
+				      const DATA_BLOB *in_output_buffer,
+				      uint32_t in_flags);
+NTSTATUS smb2cli_ioctl_recv(struct tevent_req *req,
+			    TALLOC_CTX *mem_ctx,
+			    DATA_BLOB *out_input_buffer,
+			    DATA_BLOB *out_output_buffer);
+NTSTATUS smb2cli_ioctl(struct smbXcli_conn *conn,
+		       uint32_t timeout_msec,
+		       struct smbXcli_session *session,
+		       uint32_t tcon_id,
+		       uint64_t in_fid_persistent,
+		       uint64_t in_fid_volatile,
+		       uint32_t in_ctl_code,
+		       uint32_t in_max_input_length,
+		       const DATA_BLOB *in_input_buffer,
+		       uint32_t in_max_output_length,
+		       const DATA_BLOB *in_output_buffer,
+		       uint32_t in_flags,
+		       TALLOC_CTX *mem_ctx,
+		       DATA_BLOB *out_input_buffer,
+		       DATA_BLOB *out_output_buffer);
+
 #endif /* _SMBXCLI_BASE_H_ */
diff --git a/libcli/smb/wscript_build b/libcli/smb/wscript_build
index 391c0541d2..40c3c1726b 100755
--- a/libcli/smb/wscript_build
+++ b/libcli/smb/wscript_build
@@ -17,6 +17,7 @@ bld.SAMBA_LIBRARY('cli_smb_common',
 		smb2cli_set_info.c
 		smb2cli_query_info.c
 		smb2cli_query_directory.c
+		smb2cli_ioctl.c
 	''',
 	deps='LIBCRYPTO errors gensec krb5samba LIBASYNC_REQ',
 	public_deps='talloc samba-util',