--- /dev/null
+/*********************************************************
+ * Copyright (C) 2018 VMware, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation version 2.1 and no 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 Lesser GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *********************************************************/
+
+/**
+ * @file fakeMouseWayland.cpp --
+ *
+ * Implement the methods that simulates the mouse motion.
+ */
+
+#define G_LOG_DOMAIN "dndcp"
+
+#include "fakeMouseWayland.h"
+
+#include <linux/input.h>
+#include <linux/ioctl.h>
+#include <linux/uinput.h>
+#include <glib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UINPUT_DND_POINTER_NAME "VMware DnD UInput pointer"
+
+
+// The handle for the uinput device.
+static int uinput_fd = -1;
+
+// Indicates if the uinput device is created
+static bool isInit = false;
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * FakeMouse_IsInit --
+ *
+ * Check if the uinput device is created.
+ *
+ * Results:
+ * True if the uinput device is created.
+ *
+ * Side effects:
+ * None.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+bool
+FakeMouse_IsInit()
+{
+ return isInit;
+}
+
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * FakeMouse_Init --
+ *
+ * Initialize the uinput device.
+ *
+ * Results:
+ * True if the uinput device is created successfully.
+ *
+ * Side effects:
+ * uinput device is created if succeed.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+bool
+FakeMouse_Init(int fd, // fd for uinput
+ int width, // width of the screen
+ int height) // height of the screen
+{
+ if (FakeMouse_IsInit()) {
+ return true;
+ }
+
+ g_debug("%s: Init the uinput device. fd:%d, w:%d, h:%d\n",
+ __FUNCTION__, fd, width, height);
+
+ uinput_fd = fd;
+ if (uinput_fd == -1) {
+ return false;
+ }
+
+ /*
+ * The uinput old interface is used for compatibility.
+ * For more information please refer to:
+ * https://www.kernel.org/doc/html/v4.12/input/uinput.html
+ */
+ struct uinput_user_dev dev;
+ memset(&dev, 0, sizeof(dev));
+ snprintf(dev.name, UINPUT_MAX_NAME_SIZE, UINPUT_DND_POINTER_NAME);
+
+ dev.absmin[ABS_X] = 0;
+ dev.absmax[ABS_X] = width - 1;
+ dev.absmin[ABS_Y] = 0;
+ dev.absmax[ABS_Y] = height - 1;
+
+ if (write(uinput_fd, &dev, sizeof(dev)) < 0) {
+ g_debug("%s: Failed to write\n", __FUNCTION__);
+ goto exit;
+ }
+ if (ioctl(uinput_fd, UI_SET_EVBIT, EV_ABS) < 0) {
+ g_debug("%s: Failed to register UI_SET_EVBIT EV_ABS\n", __FUNCTION__);
+ goto exit;
+ }
+ if (ioctl(uinput_fd, UI_SET_ABSBIT, ABS_X) < 0) {
+ g_debug("%s: Failed to register UI_SET_ABSBIT ABS_X\n", __FUNCTION__);
+ goto exit;
+ }
+ if (ioctl(uinput_fd, UI_SET_ABSBIT, ABS_Y) < 0) {
+ g_debug("%s: Failed to register UI_SET_ABSBIT ABS_Y\n", __FUNCTION__);
+ goto exit;
+ }
+ if (ioctl(uinput_fd, UI_SET_EVBIT, EV_KEY) < 0) {
+ g_debug("%s: Failed to register UI_SET_EVBIT EV_KEY\n", __FUNCTION__);
+ goto exit;
+ }
+ if (ioctl(uinput_fd, UI_SET_KEYBIT, BTN_MOUSE) < 0) {
+ g_debug("%s: Failed to register UI_SET_KEYBIT BTN_MOUSE\n", __FUNCTION__);
+ goto exit;
+ }
+ if (ioctl(uinput_fd, UI_SET_KEYBIT, BTN_LEFT) < 0) {
+ g_debug("%s: Failed to register UI_SET_KEYBIT BTN_LEFT\n", __FUNCTION__);
+ goto exit;
+ }
+ if (ioctl(uinput_fd, UI_DEV_CREATE, 0) < 0) {
+ g_debug("%s: Failed to create UInput device\n", __FUNCTION__);
+ goto exit;
+ }
+
+ /*
+ * On UI_DEV_CREATE the kernel will create the device node for this
+ * device. Insert a pause here so that userspace has time
+ * to detect, initialize the new device, and can start listening to
+ * the event, otherwise it will not notice the event we are about
+ * to send.
+ */
+ usleep(100 * 1000);
+
+ isInit = true;
+ return true;
+
+exit:
+ FakeMouse_Destory();
+ return false;
+}
+
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * FakeMouse_Update --
+ *
+ * Update the width and height properties of the uinput device.
+ *
+ * Results:
+ * True if the uinput device is updated successfully.
+ *
+ * Side effects:
+ * uinput device is updated.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+bool
+FakeMouse_Update(int width, // width of the screen
+ int height) // height of the screen
+{
+ if (!FakeMouse_IsInit()) {
+ return false;
+ }
+
+ FakeMouse_Destory();
+ return FakeMouse_Init(uinput_fd, width, height);
+}
+
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * FakeMouse_Destory --
+ *
+ * Destory the uinput device.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * uinput device is destory.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+void
+FakeMouse_Destory()
+{
+ if (!FakeMouse_IsInit()) {
+ return;
+ }
+
+ if (ioctl(uinput_fd, UI_DEV_DESTROY, 0) < 0) {
+ g_debug("%s: Failed to destroy uinput device\n", __FUNCTION__);
+ }
+}
+
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * FakeMouse_Move --
+ *
+ * Move the pointer to (x, y).
+ *
+ * Results:
+ * True if success.
+ *
+ * Side effects:
+ * Pointer position is updated.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+bool
+FakeMouse_Move(int x, // IN
+ int y) // IN
+{
+ if (!FakeMouse_IsInit()) {
+ return false;
+ }
+
+ bool retValue = true;
+ struct input_event event;
+
+ event.type = EV_ABS;
+ event.code = ABS_X;
+ event.value = x;
+ gettimeofday(&event.time, NULL);
+ if (write(uinput_fd, &event, sizeof(event)) < 0) {
+ g_debug("Line:%d. Function:%s. Failed to write\n", __LINE__, __FUNCTION__);
+ retValue = false;
+ }
+
+ event.type = EV_ABS;
+ event.code = ABS_Y;
+ event.value = y;
+ gettimeofday(&event.time, NULL);
+ if (write(uinput_fd, &event, sizeof(event)) < 0) {
+ g_debug("Line:%d. Function:%s. Failed to write\n", __LINE__, __FUNCTION__);
+ retValue = false;
+ }
+
+ event.type = EV_SYN;
+ event.code = SYN_REPORT;
+ event.value = 0;
+ gettimeofday(&event.time, NULL);
+ if (write(uinput_fd, &event, sizeof(event)) < 0) {
+ g_debug("Line:%d. Function:%s. Failed to write\n", __LINE__, __FUNCTION__);
+ retValue = false;
+ }
+
+ return retValue;
+}
+
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * FakeMouse_Click --
+ *
+ * Simulate the pointer down/up event.
+ *
+ * Results:
+ * True if success.
+ *
+ * Side effects:
+ * Pointer button event is updated.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+bool
+FakeMouse_Click(bool down) // IN
+{
+ if (!FakeMouse_IsInit()) {
+ return false;
+ }
+
+ bool retValue = true;
+ struct input_event event;
+
+ event.type = EV_KEY;
+ event.code = BTN_LEFT;
+ event.value = down;
+ gettimeofday(&event.time, NULL);
+ if (write(uinput_fd, &event, sizeof(event)) < 0) {
+ g_debug("Line:%d. Function:%s. Failed to write\n", __LINE__, __FUNCTION__);
+ retValue = false;
+ }
+
+ event.type = EV_SYN;
+ event.code = SYN_REPORT;
+ event.value = 0;
+ if (write(uinput_fd, &event, sizeof(event)) < 0) {
+ g_debug("Line:%d. Function:%s. Failed to write\n", __LINE__, __FUNCTION__);
+ retValue = false;
+ }
+
+ /*
+ * Insert a pause here so that userspace has time to detect this event,
+ * otherwise it will not notice the event we are about to send.
+ */
+ usleep(10 * 1000);
+ return retValue;
+}
projects / thirdparty / open-vm-tools.git / commitdiff
