/* $Id: vboxmouse.c $ */ /** @file * VirtualBox X11 Guest Additions, mouse driver for X.Org server 1.5 */ /* * Copyright (C) 2006-2022 Oracle and/or its affiliates. * * This file is part of VirtualBox base platform packages, as * available from https://www.virtualbox.org. * * 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, in version 3 of the * License. * * 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 . * * SPDX-License-Identifier: GPL-3.0-only * -------------------------------------------------------------------- * * This code is based on evdev.c from X.Org with the following copyright * and permission notice: * * Copyright © 2004-2008 Red Hat, Inc. * * Permission to use, copy, modify, distribute, and sell this software * and its documentation for any purpose is hereby granted without * fee, provided that the above copyright notice appear in all copies * and that both that copyright notice and this permission notice * appear in supporting documentation, and that the name of Red Hat * not be used in advertising or publicity pertaining to distribution * of the software without specific, written prior permission. Red * Hat makes no representations about the suitability of this software * for any purpose. It is provided "as is" without express or implied * warranty. * * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * Authors: * Kristian Høgsberg (krh@redhat.com) * Adam Jackson (ajax@redhat.com) */ #include /* for VMMDEV_MOUSE_XXX */ #include #include #include #include #include #include #ifdef VBOX_GUESTR3XF86MOD # define _X_EXPORT #else # include # include # include #endif #include "product-generated.h" static void VBoxReadInput(InputInfoPtr pInfo) { uint32_t cx, cy, fFeatures; /* Read a byte from the device to acknowledge the event */ char c; int res = read(pInfo->fd, &c, 1); NOREF(res); /* The first test here is a workaround for an apparent bug in Xorg Server 1.5 */ if ( #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 2 miPointerCurrentScreen() != NULL #else miPointerGetScreen(pInfo->dev) != NULL #endif && RT_SUCCESS(VbglR3GetMouseStatus(&fFeatures, &cx, &cy)) && (fFeatures & VMMDEV_MOUSE_HOST_WANTS_ABSOLUTE)) { #if ABI_XINPUT_VERSION == SET_ABI_VERSION(2, 0) /* Bug in the 1.4 X server series - conversion_proc was no longer * called, but the server didn't yet do the conversion itself. */ cx = (cx * screenInfo.screens[0]->width) / 65535; cy = (cy * screenInfo.screens[0]->height) / 65535; #endif /* send absolute movement */ xf86PostMotionEvent(pInfo->dev, 1, 0, 2, cx, cy); } } static void VBoxPtrCtrlProc(DeviceIntPtr device, PtrCtrl *ctrl) { /* Nothing to do, dix handles all settings */ RT_NOREF(device, ctrl); } static int VBoxInit(DeviceIntPtr device) { CARD8 map[2] = { 0, 1 }; #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 7 Atom axis_labels[2] = { 0, 0 }; Atom button_labels[2] = { 0, 0 }; #endif if (!InitPointerDeviceStruct((DevicePtr)device, map, 2, #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 7 button_labels, #endif #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 2 miPointerGetMotionEvents, VBoxPtrCtrlProc, miPointerGetMotionBufferSize() #elif GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 3 GetMotionHistory, VBoxPtrCtrlProc, GetMotionHistorySize(), 2 /* Number of axes */ #elif GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 3 VBoxPtrCtrlProc, GetMotionHistorySize(), 2 /* Number of axes */ #else # error Unsupported version of X.Org #endif #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 7 , axis_labels #endif )) return !Success; /* Tell the server about the range of axis values we report */ #if ABI_XINPUT_VERSION <= SET_ABI_VERSION(2, 0) xf86InitValuatorAxisStruct(device, 0, 0, -1, 1, 0, 1); xf86InitValuatorAxisStruct(device, 1, 0, -1, 1, 0, 1); #else xf86InitValuatorAxisStruct(device, 0, # if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 7 axis_labels[0], # endif VMMDEV_MOUSE_RANGE_MIN /* min X */, VMMDEV_MOUSE_RANGE_MAX /* max X */, 10000, 0, 10000 # if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 12 , Absolute # endif ); xf86InitValuatorAxisStruct(device, 1, # if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 7 axis_labels[1], # endif VMMDEV_MOUSE_RANGE_MIN /* min Y */, VMMDEV_MOUSE_RANGE_MAX /* max Y */, 10000, 0, 10000 # if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 12 , Absolute # endif ); #endif xf86InitValuatorDefaults(device, 0); xf86InitValuatorDefaults(device, 1); xf86MotionHistoryAllocate(device->public.devicePrivate); return Success; } static int VBoxProc(DeviceIntPtr device, int what) { InputInfoPtr pInfo; int rc, xrc; uint32_t fFeatures = 0; pInfo = device->public.devicePrivate; switch (what) { case DEVICE_INIT: xrc = VBoxInit(device); if (xrc != Success) { VbglR3Term(); return xrc; } break; case DEVICE_ON: xf86Msg(X_INFO, "%s: On.\n", pInfo->name); if (device->public.on) break; /* Tell the host that we want absolute co-ordinates */ rc = VbglR3GetMouseStatus(&fFeatures, NULL, NULL); fFeatures &= VMMDEV_MOUSE_GUEST_NEEDS_HOST_CURSOR; if (RT_SUCCESS(rc)) rc = VbglR3SetMouseStatus( fFeatures | VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE | VMMDEV_MOUSE_NEW_PROTOCOL); if (!RT_SUCCESS(rc)) { xf86Msg(X_ERROR, "%s: Failed to switch guest mouse into absolute mode\n", pInfo->name); return !Success; } xf86AddEnabledDevice(pInfo); device->public.on = TRUE; break; case DEVICE_OFF: xf86Msg(X_INFO, "%s: Off.\n", pInfo->name); rc = VbglR3GetMouseStatus(&fFeatures, NULL, NULL); fFeatures &= VMMDEV_MOUSE_GUEST_NEEDS_HOST_CURSOR; if (RT_SUCCESS(rc)) rc = VbglR3SetMouseStatus( fFeatures & ~VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE & ~VMMDEV_MOUSE_NEW_PROTOCOL); xf86RemoveEnabledDevice(pInfo); device->public.on = FALSE; break; case DEVICE_CLOSE: VbglR3Term(); xf86Msg(X_INFO, "%s: Close\n", pInfo->name); break; default: return BadValue; } return Success; } static int VBoxProbe(InputInfoPtr pInfo) { int rc = VbglR3Init(); if (!RT_SUCCESS(rc)) { xf86Msg(X_ERROR, "%s: Failed to open the VirtualBox device (error %d)\n", pInfo->name, rc); return BadMatch; } return Success; } static Bool VBoxConvert(InputInfoPtr pInfo, int first, int num, int v0, int v1, int v2, int v3, int v4, int v5, int *x, int *y) { RT_NOREF(pInfo, num, v2, v3, v4, v5); if (first == 0) { *x = xf86ScaleAxis(v0, 0, screenInfo.screens[0]->width, 0, 65536); *y = xf86ScaleAxis(v1, 0, screenInfo.screens[0]->height, 0, 65536); return TRUE; } return FALSE; } static int VBoxPreInitInfo(InputDriverPtr drv, InputInfoPtr pInfo, int flags) { const char *device; int rc; RT_NOREF(drv, flags); /* Initialise the InputInfoRec. */ pInfo->device_control = VBoxProc; pInfo->read_input = VBoxReadInput; /* Unlike evdev, we set this unconditionally, as we don't handle keyboards. */ pInfo->type_name = XI_MOUSE; pInfo->flags |= XI86_ALWAYS_CORE; device = xf86SetStrOption(pInfo->options, "Device", "/dev/vboxguest"); xf86Msg(X_CONFIG, "%s: Device: \"%s\"\n", pInfo->name, device); do { pInfo->fd = open(device, O_RDWR, 0); } while (pInfo->fd < 0 && errno == EINTR); if (pInfo->fd < 0) { xf86Msg(X_ERROR, "Unable to open VirtualBox device \"%s\".\n", device); return BadMatch; } rc = VBoxProbe(pInfo); if (rc != Success) return rc; return Success; } #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 12 static InputInfoPtr VBoxPreInit(InputDriverPtr drv, IDevPtr dev, int flags) { InputInfoPtr pInfo = xf86AllocateInput(drv, 0); if (!pInfo) return NULL; /* Initialise the InputInfoRec. */ pInfo->name = dev->identifier; pInfo->conf_idev = dev; pInfo->conversion_proc = VBoxConvert; pInfo->flags = XI86_POINTER_CAPABLE | XI86_SEND_DRAG_EVENTS; xf86CollectInputOptions(pInfo, NULL, NULL); xf86ProcessCommonOptions(pInfo, pInfo->options); if (VBoxPreInitInfo(drv, pInfo, flags) != Success) { xf86DeleteInput(pInfo, 0); return NULL; } pInfo->flags |= XI86_CONFIGURED; return pInfo; } #endif _X_EXPORT InputDriverRec VBOXMOUSE = { 1, "vboxmouse", NULL, #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 12 VBoxPreInit, #else VBoxPreInitInfo, #endif NULL, NULL, 0 }; static pointer VBoxPlug(pointer module, pointer options, int *errmaj, int *errmin) { RT_NOREF(options, errmaj, errmin); xf86AddInputDriver(&VBOXMOUSE, module, 0); xf86Msg(X_CONFIG, "Load address of symbol \"VBOXMOUSE\" is %p\n", (void *)&VBOXMOUSE); return module; } static XF86ModuleVersionInfo VBoxVersionRec = { "vboxmouse", VBOX_VENDOR, MODINFOSTRING1, MODINFOSTRING2, 0, /* Missing from SDK: XORG_VERSION_CURRENT, */ 1, 0, 0, ABI_CLASS_XINPUT, ABI_XINPUT_VERSION, MOD_CLASS_XINPUT, {0, 0, 0, 0} }; _X_EXPORT XF86ModuleData vboxmouseModuleData = { &VBoxVersionRec, VBoxPlug, NULL };