libcli/smb: add smb1cli_echo*

metze

libcli/smb/smb1cli_echo.c

@@ -0,0 +1,170 @@
+/*
+   Unix SMB/CIFS implementation.
+   smb2 lib
+   Copyright (C) Stefan Metzmacher 2012
+
+   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"
+
+struct smb1cli_echo_state {
+	uint16_t vwv[1];
+	DATA_BLOB data;
+	uint16_t num_echos;
+};
+
+static void smb1cli_echo_done(struct tevent_req *subreq);
+
+struct tevent_req *smb1cli_echo_send(TALLOC_CTX *mem_ctx,
+				     struct tevent_context *ev,
+				     struct smbXcli_conn *conn,
+				     uint32_t timeout_msec,
+				     uint16_t num_echos,
+				     DATA_BLOB data)
+{
+	struct tevent_req *req, *subreq;
+	struct smb1cli_echo_state *state;
+
+	req = tevent_req_create(mem_ctx, &state, struct smb1cli_echo_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	SSVAL(state->vwv, 0, num_echos);
+	state->data = data;
+	state->num_echos = num_echos;
+
+	subreq = smb1cli_req_send(state, ev, conn, SMBecho,
+				  0, 0, /* *_flags */
+				  0, 0, /* *_flags2 */
+				  timeout_msec,
+				  0, /* pid */
+				  NULL, /* tcon */
+				  NULL, /* session */
+				  ARRAY_SIZE(state->vwv), state->vwv,
+				  data.length, data.data);
+	if (subreq == NULL) {
+		goto fail;
+	}
+	tevent_req_set_callback(subreq, smb1cli_echo_done, req);
+	return req;
+ fail:
+	TALLOC_FREE(req);
+	return NULL;
+}
+
+static void smb1cli_echo_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct smb1cli_echo_state *state = tevent_req_data(
+		req, struct smb1cli_echo_state);
+	NTSTATUS status;
+	uint32_t num_bytes;
+	uint8_t *bytes;
+	struct iovec *recv_iov;
+	struct smb1cli_req_expected_response expected[] = {
+	{
+		.status = NT_STATUS_OK,
+		.wct    = 1,
+	},
+	};
+
+	status = smb1cli_req_recv(subreq, state,
+				  &recv_iov,
+				  NULL, /* phdr */
+				  NULL, /* pwct */
+				  NULL, /* pvwv */
+				  NULL, /* pvwv_offset */
+				  &num_bytes,
+				  &bytes,
+				  NULL, /* pbytes_offset */
+				  NULL, /* pinbuf */
+				  expected, ARRAY_SIZE(expected));
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+
+	if (num_bytes != state->data.length) {
+		tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+		return;
+	}
+
+	if (memcmp(bytes, state->data.data, num_bytes) != 0) {
+		tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+		return;
+	}
+
+	/* TODO: do we want to verify the sequence number? */
+
+	state->num_echos -=1;
+	if (state->num_echos == 0) {
+		tevent_req_done(req);
+		return;
+	}
+
+	if (!smbXcli_req_set_pending(subreq)) {
+		tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+		return;
+	}
+}
+
+/**
+ * Get the result out from an echo request
+ * @param[in] req	The async_req from smb1cli_echo_send
+ * @retval Did the server reply correctly?
+ */
+
+NTSTATUS smb1cli_echo_recv(struct tevent_req *req)
+{
+	return tevent_req_simple_recv_ntstatus(req);
+}
+
+NTSTATUS smb1cli_echo(struct smbXcli_conn *conn, uint32_t timeout_msec,
+		      uint16_t num_echos, DATA_BLOB data)
+{
+	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;
+		goto fail;
+	}
+	ev = tevent_context_init(frame);
+	if (ev == NULL) {
+		goto fail;
+	}
+	req = smb1cli_echo_send(frame, ev, conn, timeout_msec, num_echos, data);
+	if (req == NULL) {
+		goto fail;
+	}
+	if (!tevent_req_poll_ntstatus(req, ev, &status)) {
+		goto fail;
+	}
+	status = smb1cli_echo_recv(req);
+ fail:
+	TALLOC_FREE(frame);
+	return status;
+}

libcli/smb/smbXcli_base.h

@@ -187,6 +187,16 @@ NTSTATUS smb1cli_trans(TALLOC_CTX *mem_ctx, struct smbXcli_conn *conn,
 		uint8_t **rparam, uint32_t min_rparam, uint32_t *num_rparam,
 		uint8_t **rdata, uint32_t min_rdata, uint32_t *num_rdata);
 
+struct tevent_req *smb1cli_echo_send(TALLOC_CTX *mem_ctx,
+				     struct tevent_context *ev,
+				     struct smbXcli_conn *conn,
+				     uint32_t timeout_msec,
+				     uint16_t num_echos,
+				     DATA_BLOB data);
+NTSTATUS smb1cli_echo_recv(struct tevent_req *req);
+NTSTATUS smb1cli_echo(struct smbXcli_conn *conn, uint32_t timeout_msec,
+		      uint16_t num_echos, DATA_BLOB data);
+
 uint32_t smb2cli_conn_server_capabilities(struct smbXcli_conn *conn);
 uint16_t smb2cli_conn_server_security_mode(struct smbXcli_conn *conn);
 uint32_t smb2cli_conn_max_trans_size(struct smbXcli_conn *conn);

libcli/smb/wscript

@@ -21,6 +21,7 @@ def build(bld):
 		util.c
 		smbXcli_base.c
 		smb1cli_trans.c
+		smb1cli_echo.c
 		smb2cli_session.c
                 smb2cli_create.c
                 smb2cli_close.c

source3/Makefile.in

@@ -629,6 +629,7 @@ LIBSMB_OBJ = libsmb/clientgen.o libsmb/cliconnect.o libsmb/clifile.o \
 	     ../libcli/smb/read_smb.o \
 	     ../libcli/smb/smbXcli_base.o \
 	     ../libcli/smb/smb1cli_trans.o \
+	     ../libcli/smb/smb1cli_echo.o \
 	     ../libcli/smb/smb2cli_session.o \
 	     libsmb/smb2cli_tcon.o \
 	     ../libcli/smb/smb2cli_create.o \