bae070914f
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
444 lines
11 KiB
C
444 lines
11 KiB
C
/*
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* Copyright © 2009 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors: Peter Hutterer
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*
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*/
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/**
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* @file Protocol handling for the XIQueryDevice request/reply.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "inputstr.h"
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#include <X11/X.h>
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#include <X11/extensions/XI2proto.h>
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#include "xkbstr.h"
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#include "xkbsrv.h"
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#include "xserver-properties.h"
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#include "exevents.h"
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#include "querydev.h"
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static int ListDeviceInfo(DeviceIntPtr dev, xXIDeviceInfo* info);
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static int SizeDeviceInfo(DeviceIntPtr dev);
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static void SwapDeviceInfo(DeviceIntPtr dev, xXIDeviceInfo* info);
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int
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SProcXIQueryDevice(ClientPtr client)
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{
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char n;
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REQUEST(xXIQueryDeviceReq);
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swaps(&stuff->length, n);
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swaps(&stuff->deviceid, n);
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return ProcXIQueryDevice(client);
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}
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int
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ProcXIQueryDevice(ClientPtr client)
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{
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xXIQueryDeviceReply rep;
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DeviceIntPtr dev = NULL;
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int rc = Success;
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int len = 0;
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char *info, *ptr;
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REQUEST(xXIQueryDeviceReq);
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REQUEST_SIZE_MATCH(xXIQueryDeviceReq);
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if (stuff->deviceid != XIAllDevices && stuff->deviceid != XIAllMasterDevices)
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{
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rc = dixLookupDevice(&dev, stuff->deviceid, client, DixGetAttrAccess);
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if (rc != Success)
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{
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client->errorValue = stuff->deviceid;
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return rc;
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}
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}
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if (dev)
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len += SizeDeviceInfo(dev);
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else
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{
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len = 0;
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for (dev = inputInfo.devices; dev; dev = dev->next)
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{
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if (stuff->deviceid == XIAllDevices ||
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(stuff->deviceid == XIAllMasterDevices && dev->isMaster))
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len += SizeDeviceInfo(dev);
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}
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for (dev = inputInfo.off_devices; dev; dev = dev->next)
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{
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if (stuff->deviceid == XIAllDevices ||
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(stuff->deviceid == XIAllMasterDevices && dev->isMaster))
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len += SizeDeviceInfo(dev);
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}
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dev = NULL;
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}
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info = xcalloc(1, len);
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if (!info)
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return BadAlloc;
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memset(&rep, 0, sizeof(xXIQueryDeviceReply));
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rep.repType = X_Reply;
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rep.RepType = X_XIQueryDevice;
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rep.sequenceNumber = client->sequence;
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rep.length = len/4;
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rep.num_devices = 0;
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ptr = info;
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if (dev)
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{
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len = ListDeviceInfo(dev, (xXIDeviceInfo*)info);
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if (client->swapped)
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SwapDeviceInfo(dev, (xXIDeviceInfo*)info);
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info += len;
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rep.num_devices = 1;
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} else
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{
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for (dev = inputInfo.devices; dev; dev = dev->next)
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{
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if (stuff->deviceid == XIAllDevices ||
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(stuff->deviceid == XIAllMasterDevices && dev->isMaster))
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{
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len = ListDeviceInfo(dev, (xXIDeviceInfo*)info);
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if (client->swapped)
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SwapDeviceInfo(dev, (xXIDeviceInfo*)info);
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info += len;
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rep.num_devices++;
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}
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}
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for (dev = inputInfo.off_devices; dev; dev = dev->next)
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{
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if (stuff->deviceid == XIAllDevices ||
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(stuff->deviceid == XIAllMasterDevices && dev->isMaster))
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{
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len = ListDeviceInfo(dev, (xXIDeviceInfo*)info);
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if (client->swapped)
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SwapDeviceInfo(dev, (xXIDeviceInfo*)info);
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info += len;
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rep.num_devices++;
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}
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}
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}
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WriteReplyToClient(client, sizeof(xXIQueryDeviceReply), &rep);
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WriteToClient(client, rep.length * 4, ptr);
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return rc;
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}
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void
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SRepXIQueryDevice(ClientPtr client, int size, xXIQueryDeviceReply *rep)
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{
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char n;
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swaps(&rep->sequenceNumber, n);
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swapl(&rep->length, n);
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swaps(&rep->num_devices, n);
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/* Device info is already swapped, see ProcXIQueryDevice */
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WriteToClient(client, size, (char *)rep);
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}
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/**
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* @return The number of bytes needed to store this device's xXIDeviceInfo
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* (and its classes).
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*/
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static int
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SizeDeviceInfo(DeviceIntPtr dev)
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{
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int len = sizeof(xXIDeviceInfo);
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/* 4-padded name */
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len += (((strlen(dev->name) + 3)/4)*4);
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return len + SizeDeviceClasses(dev);
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}
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/*
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* @return The number of bytes needed to store this device's classes.
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*/
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int
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SizeDeviceClasses(DeviceIntPtr dev)
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{
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int len = 0;
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if (dev->button)
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{
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len += sizeof(xXIButtonInfo);
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len += dev->button->numButtons * sizeof(Atom);
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}
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if (dev->key)
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{
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XkbDescPtr xkb = dev->key->xkbInfo->desc;
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len += sizeof(xXIKeyInfo);
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len += (xkb->max_key_code - xkb->min_key_code + 1) * sizeof(uint32_t);
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}
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if (dev->valuator)
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len += sizeof(xXIValuatorInfo) * dev->valuator->numAxes;
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return len;
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}
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/**
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* Write button information into info.
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* @return Number of bytes written into info.
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*/
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int
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ListButtonInfo(DeviceIntPtr dev, xXIButtonInfo* info)
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{
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info->type = ButtonClass;
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info->num_buttons = dev->button->numButtons;
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info->length = 2 + info->num_buttons;
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/** XXX: button labels */
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return info->length * 4;
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}
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static void
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SwapButtonInfo(DeviceIntPtr dev, xXIButtonInfo* info)
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{
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char n;
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Atom *btn;
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int i;
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swaps(&info->type, n);
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swaps(&info->length, n);
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for (i = 0, btn = (Atom*)&info[1]; i < info->num_buttons; i++, btn++)
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swaps(btn, n);
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swaps(&info->num_buttons, n);
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}
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/**
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* Write key information into info.
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* @return Number of bytes written into info.
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*/
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int
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ListKeyInfo(DeviceIntPtr dev, xXIKeyInfo* info)
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{
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int i;
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XkbDescPtr xkb = dev->key->xkbInfo->desc;
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uint32_t *kc;
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info->type = KeyClass;
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info->num_keycodes = xkb->max_key_code - xkb->min_key_code + 1;
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info->length = 2 + info->num_keycodes;
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kc = (uint32_t*)&info[1];
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for (i = xkb->min_key_code; i <= xkb->max_key_code; i++, kc++)
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*kc = i;
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return info->length * 4;
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}
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static void
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SwapKeyInfo(DeviceIntPtr dev, xXIKeyInfo* info)
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{
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char n;
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uint32_t *key;
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int i;
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swaps(&info->type, n);
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swaps(&info->length, n);
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for (i = 0, key = (uint32_t*)&info[1]; i < info->num_keycodes; i++, key++)
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swaps(key, n);
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swaps(&info->num_keycodes, n);
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}
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/**
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* List axis information for the given axis.
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*
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* @return The number of bytes written into info.
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*/
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int
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ListValuatorInfo(DeviceIntPtr dev, xXIValuatorInfo* info, int axisnumber)
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{
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ValuatorClassPtr v = dev->valuator;
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info->type = ValuatorClass;
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info->length = sizeof(xXIValuatorInfo)/4;
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info->name = XIGetKnownProperty(AXIS_LABEL_PROP_REL_MISC); /* XXX */
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info->min.integral = v->axes[axisnumber].min_value;
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info->min.frac = 0;
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info->max.integral = v->axes[axisnumber].max_value;
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info->max.frac = 0;
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info->resolution = v->axes[axisnumber].resolution;
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info->number = axisnumber;
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info->mode = v->mode; /* Server doesn't have per-axis mode yet */
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return info->length * 4;
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}
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static void
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SwapValuatorInfo(DeviceIntPtr dev, xXIValuatorInfo* info)
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{
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char n;
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swaps(&info->type, n);
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swaps(&info->length, n);
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swapl(&info->name, n);
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swapl(&info->min.integral, n);
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swapl(&info->min.frac, n);
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swapl(&info->max.integral, n);
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swapl(&info->max.frac, n);
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swaps(&info->number, n);
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}
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int GetDeviceUse(DeviceIntPtr dev, uint16_t *attachment)
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{
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DeviceIntPtr master = dev->u.master;
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int use;
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if (dev->isMaster)
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{
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DeviceIntPtr paired = GetPairedDevice(dev);
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use = IsPointerDevice(dev) ? XIMasterPointer : XIMasterKeyboard;
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*attachment = (paired ? paired->id : 0);
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} else if (master)
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{
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use = IsPointerDevice(master) ? XISlavePointer : XISlaveKeyboard;
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*attachment = master->id;
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} else
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use = XIFloatingSlave;
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return use;
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}
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/**
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* Write the info for device dev into the buffer pointed to by info.
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*
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* @return The number of bytes used.
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*/
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static int
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ListDeviceInfo(DeviceIntPtr dev, xXIDeviceInfo* info)
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{
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char *any = (char*)&info[1];
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int len = 0, total_len = 0;
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info->deviceid = dev->id;
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info->use = GetDeviceUse(dev, &info->attachment);
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info->num_classes = 0;
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info->name_len = strlen(dev->name);
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info->enabled = dev->enabled;
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total_len = sizeof(xXIDeviceInfo);
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strncpy(any, dev->name, info->name_len);
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len = ((info->name_len + 3)/4) * 4;
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any += len;
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total_len += len;
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return total_len + ListDeviceClasses(dev, any, &info->num_classes);
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}
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/**
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* Write the class info of the device into the memory pointed to by any, set
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* nclasses to the number of classes in total and return the number of bytes
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* written.
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*/
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int
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ListDeviceClasses(DeviceIntPtr dev, char *any, uint16_t *nclasses)
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{
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int total_len = 0;
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int len;
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int i;
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if (dev->button)
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{
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(*nclasses)++;
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len = ListButtonInfo(dev, (xXIButtonInfo*)any);
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any += len;
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total_len += len;
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}
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if (dev->key)
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{
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(*nclasses)++;
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len = ListKeyInfo(dev, (xXIKeyInfo*)any);
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any += len;
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total_len += len;
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}
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for (i = 0; dev->valuator && i < dev->valuator->numAxes; i++)
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{
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(*nclasses)++;
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len = ListValuatorInfo(dev, (xXIValuatorInfo*)any, i);
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any += len;
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total_len += len;
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}
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return total_len;
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}
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static void
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SwapDeviceInfo(DeviceIntPtr dev, xXIDeviceInfo* info)
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{
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char n;
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char *any = (char*)&info[1];
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int i;
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/* Skip over name */
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any += (((info->name_len + 3)/4) * 4);
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for (i = 0; i < info->num_classes; i++)
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{
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switch(((xXIAnyInfo*)any)->type)
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{
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case ButtonClass:
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SwapButtonInfo(dev, (xXIButtonInfo*)any);
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break;
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case KeyClass:
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SwapKeyInfo(dev, (xXIKeyInfo*)any);
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break;
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case ValuatorClass:
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SwapValuatorInfo(dev, (xXIValuatorInfo*)any);
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break;
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}
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any += (((xXIAnyInfo*)any)->length * 4);
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}
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swaps(&info->deviceid, n);
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swaps(&info->use, n);
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swaps(&info->attachment, n);
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swaps(&info->num_classes, n);
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swaps(&info->name_len, n);
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}
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