xserver git update 15/5/2010

1 files changed, 503 insertions, 503 deletions

diff --git a/xorg-server/Xi/xiquerydevice.c b/xorg-server/Xi/xiquerydevice.c
index 47ab688fd..c24f8a894 100644
--- a/xorg-server/Xi/xiquerydevice.c
+++ b/xorg-server/Xi/xiquerydevice.c
@@ -1,503 +1,503 @@
-/*
- * Copyright © 2009 Red Hat, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors: Peter Hutterer
- *
- */
-
-/**
- * @file Protocol handling for the XIQueryDevice request/reply.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include "inputstr.h"
-#include <X11/X.h>
-#include <X11/Xatom.h>
-#include <X11/extensions/XI2proto.h>
-#include "xkbstr.h"
-#include "xkbsrv.h"
-#include "xserver-properties.h"
-#include "exevents.h"
-#include "xace.h"
-
-#include "xiquerydevice.h"
-
-static Bool ShouldSkipDevice(ClientPtr client, int deviceid, DeviceIntPtr d);
-static int
-ListDeviceInfo(ClientPtr client, DeviceIntPtr dev, xXIDeviceInfo* info);
-static int SizeDeviceInfo(DeviceIntPtr dev);
-static void SwapDeviceInfo(DeviceIntPtr dev, xXIDeviceInfo* info);
-int
-SProcXIQueryDevice(ClientPtr client)
-{
-    char n;
-
-    REQUEST(xXIQueryDeviceReq);
-
-    swaps(&stuff->length, n);
-    swaps(&stuff->deviceid, n);
-
-    return ProcXIQueryDevice(client);
-}
-
-int
-ProcXIQueryDevice(ClientPtr client)
-{
-    xXIQueryDeviceReply rep;
-    DeviceIntPtr dev = NULL;
-    int rc = Success;
-    int i = 0, len = 0;
-    char *info, *ptr;
-    Bool *skip = NULL;
-
-    REQUEST(xXIQueryDeviceReq);
-    REQUEST_SIZE_MATCH(xXIQueryDeviceReq);
-
-    if (stuff->deviceid != XIAllDevices && stuff->deviceid != XIAllMasterDevices)
-    {
-        rc = dixLookupDevice(&dev, stuff->deviceid, client, DixGetAttrAccess);
-        if (rc != Success)
-        {
-            client->errorValue = stuff->deviceid;
-            return rc;
-        }
-        len += SizeDeviceInfo(dev);
-    }
-    else
-    {
-        skip = xcalloc(sizeof(Bool), inputInfo.numDevices);
-        if (!skip)
-            return BadAlloc;
-
-        for (dev = inputInfo.devices; dev; dev = dev->next, i++)
-        {
-            skip[i] = ShouldSkipDevice(client, stuff->deviceid, dev);
-            if (!skip[i])
-                len += SizeDeviceInfo(dev);
-        }
-
-        for (dev = inputInfo.off_devices; dev; dev = dev->next, i++)
-        {
-            skip[i] = ShouldSkipDevice(client, stuff->deviceid, dev);
-            if (!skip[i])
-                len += SizeDeviceInfo(dev);
-        }
-    }
-
-    info = xcalloc(1, len);
-    if (!info)
-        return BadAlloc;
-
-    memset(&rep, 0, sizeof(xXIQueryDeviceReply));
-    rep.repType = X_Reply;
-    rep.RepType = X_XIQueryDevice;
-    rep.sequenceNumber = client->sequence;
-    rep.length = len/4;
-    rep.num_devices = 0;
-
-    ptr = info;
-    if (dev)
-    {
-        len = ListDeviceInfo(client, dev, (xXIDeviceInfo*)info);
-        if (client->swapped)
-            SwapDeviceInfo(dev, (xXIDeviceInfo*)info);
-        info += len;
-        rep.num_devices = 1;
-    } else
-    {
-        i = 0;
-        for (dev = inputInfo.devices; dev; dev = dev->next, i++)
-        {
-            if (!skip[i])
-            {
-                len = ListDeviceInfo(client, dev, (xXIDeviceInfo*)info);
-                if (client->swapped)
-                    SwapDeviceInfo(dev, (xXIDeviceInfo*)info);
-                info += len;
-                rep.num_devices++;
-            }
-        }
-
-        for (dev = inputInfo.off_devices; dev; dev = dev->next, i++)
-        {
-            if (!skip[i])
-            {
-                len = ListDeviceInfo(client, dev, (xXIDeviceInfo*)info);
-                if (client->swapped)
-                    SwapDeviceInfo(dev, (xXIDeviceInfo*)info);
-                info += len;
-                rep.num_devices++;
-            }
-        }
-    }
-
-    WriteReplyToClient(client, sizeof(xXIQueryDeviceReply), &rep);
-    WriteToClient(client, rep.length * 4, ptr);
-    xfree(ptr);
-    xfree(skip);
-    return rc;
-}
-
-void
-SRepXIQueryDevice(ClientPtr client, int size, xXIQueryDeviceReply *rep)
-{
-    char n;
-
-    swaps(&rep->sequenceNumber, n);
-    swapl(&rep->length, n);
-    swaps(&rep->num_devices, n);
-
-    /* Device info is already swapped, see ProcXIQueryDevice */
-
-    WriteToClient(client, size, (char *)rep);
-}
-
-
-/**
- * @return Whether the device should be included in the returned list.
- */
-static Bool
-ShouldSkipDevice(ClientPtr client, int deviceid, DeviceIntPtr dev)
-{
-    /* if all devices are not being queried, only master devices are */
-    if (deviceid == XIAllDevices || IsMaster(dev))
-    {
-        int rc = XaceHook(XACE_DEVICE_ACCESS, client, dev, DixGetAttrAccess);
-        if (rc == Success)
-            return FALSE;
-    }
-    return TRUE;
-}
-
-/**
- * @return The number of bytes needed to store this device's xXIDeviceInfo
- * (and its classes).
- */
-static int
-SizeDeviceInfo(DeviceIntPtr dev)
-{
-    int len = sizeof(xXIDeviceInfo);
-
-    /* 4-padded name */
-    len += pad_to_int32(strlen(dev->name));
-
-    return len + SizeDeviceClasses(dev);
-
-}
-
-/*
- * @return The number of bytes needed to store this device's classes.
- */
-int
-SizeDeviceClasses(DeviceIntPtr dev)
-{
-    int len = 0;
-
-    if (dev->button)
-    {
-        len += sizeof(xXIButtonInfo);
-        len += dev->button->numButtons * sizeof(Atom);
-        len += pad_to_int32(bits_to_bytes(dev->button->numButtons));
-    }
-
-    if (dev->key)
-    {
-        XkbDescPtr xkb = dev->key->xkbInfo->desc;
-        len += sizeof(xXIKeyInfo);
-        len += (xkb->max_key_code - xkb->min_key_code + 1) * sizeof(uint32_t);
-    }
-
-    if (dev->valuator)
-        len += sizeof(xXIValuatorInfo) * dev->valuator->numAxes;
-
-    return len;
-}
-
-
-/**
- * Write button information into info.
- * @return Number of bytes written into info.
- */
-int
-ListButtonInfo(DeviceIntPtr dev, xXIButtonInfo* info, Bool reportState)
-{
-    unsigned char *bits;
-    int mask_len;
-    int i;
-
-    if (!dev || !dev->button)
-	return 0;
-
-    mask_len = bytes_to_int32(bits_to_bytes(dev->button->numButtons));
-
-    info->type = ButtonClass;
-    info->num_buttons = dev->button->numButtons;
-    info->length = bytes_to_int32(sizeof(xXIButtonInfo)) +
-                   info->num_buttons + mask_len;
-    info->sourceid = dev->button->sourceid;
-
-    bits = (unsigned char*)&info[1];
-    memset(bits, 0, mask_len * 4);
-
-    if (reportState)
-	for (i = 0; i < dev->button->numButtons; i++)
-	    if (BitIsOn(dev->button->down, i))
-		SetBit(bits, i);
-
-    bits += mask_len * 4;
-    memcpy(bits, dev->button->labels, dev->button->numButtons * sizeof(Atom));
-
-    return info->length * 4;
-}
-
-static void
-SwapButtonInfo(DeviceIntPtr dev, xXIButtonInfo* info)
-{
-    char n;
-    Atom *btn;
-    int i;
-    swaps(&info->type, n);
-    swaps(&info->length, n);
-    swaps(&info->sourceid, n);
-
-    for (i = 0, btn = (Atom*)&info[1]; i < info->num_buttons; i++, btn++)
-        swaps(btn, n);
-
-    swaps(&info->num_buttons, n);
-}
-
-/**
- * Write key information into info.
- * @return Number of bytes written into info.
- */
-int
-ListKeyInfo(DeviceIntPtr dev, xXIKeyInfo* info)
-{
-    int i;
-    XkbDescPtr xkb = dev->key->xkbInfo->desc;
-    uint32_t *kc;
-
-    info->type = KeyClass;
-    info->num_keycodes = xkb->max_key_code - xkb->min_key_code + 1;
-    info->length = sizeof(xXIKeyInfo)/4 + info->num_keycodes;
-    info->sourceid = dev->key->sourceid;
-
-    kc = (uint32_t*)&info[1];
-    for (i = xkb->min_key_code; i <= xkb->max_key_code; i++, kc++)
-        *kc = i;
-
-    return info->length * 4;
-}
-
-static void
-SwapKeyInfo(DeviceIntPtr dev, xXIKeyInfo* info)
-{
-    char n;
-    uint32_t *key;
-    int i;
-    swaps(&info->type, n);
-    swaps(&info->length, n);
-    swaps(&info->sourceid, n);
-
-    for (i = 0, key = (uint32_t*)&info[1]; i < info->num_keycodes; i++, key++)
-        swapl(key, n);
-
-    swaps(&info->num_keycodes, n);
-}
-
-/**
- * List axis information for the given axis.
- *
- * @return The number of bytes written into info.
- */
-int
-ListValuatorInfo(DeviceIntPtr dev, xXIValuatorInfo* info, int axisnumber,
-		 Bool reportState)
-{
-    ValuatorClassPtr v = dev->valuator;
-
-    info->type = ValuatorClass;
-    info->length = sizeof(xXIValuatorInfo)/4;
-    info->label = v->axes[axisnumber].label;
-    info->min.integral = v->axes[axisnumber].min_value;
-    info->min.frac = 0;
-    info->max.integral = v->axes[axisnumber].max_value;
-    info->max.frac = 0;
-    info->value.integral = (int)v->axisVal[axisnumber];
-    info->value.frac = (int)(v->axisVal[axisnumber] * (1 << 16) * (1 << 16));
-    info->resolution = v->axes[axisnumber].resolution;
-    info->number = axisnumber;
-    info->mode = v->mode; /* Server doesn't have per-axis mode yet */
-    info->sourceid = v->sourceid;
-
-    if (!reportState)
-	info->value = info->min;
-
-    return info->length * 4;
-}
-
-static void
-SwapValuatorInfo(DeviceIntPtr dev, xXIValuatorInfo* info)
-{
-    char n;
-    swaps(&info->type, n);
-    swaps(&info->length, n);
-    swapl(&info->label, n);
-    swapl(&info->min.integral, n);
-    swapl(&info->min.frac, n);
-    swapl(&info->max.integral, n);
-    swapl(&info->max.frac, n);
-    swaps(&info->number, n);
-    swaps(&info->sourceid, n);
-}
-
-int GetDeviceUse(DeviceIntPtr dev, uint16_t *attachment)
-{
-    DeviceIntPtr master = dev->u.master;
-    int use;
-
-    if (IsMaster(dev))
-    {
-        DeviceIntPtr paired = GetPairedDevice(dev);
-        use = IsPointerDevice(dev) ? XIMasterPointer : XIMasterKeyboard;
-        *attachment = (paired ? paired->id : 0);
-    } else if (master)
-    {
-        use = IsPointerDevice(master) ? XISlavePointer : XISlaveKeyboard;
-        *attachment = master->id;
-    } else
-        use = XIFloatingSlave;
-
-    return use;
-}
-
-/**
- * Write the info for device dev into the buffer pointed to by info.
- *
- * @return The number of bytes used.
- */
-static int
-ListDeviceInfo(ClientPtr client, DeviceIntPtr dev, xXIDeviceInfo* info)
-{
-    char *any = (char*)&info[1];
-    int len = 0, total_len = 0;
-
-    info->deviceid = dev->id;
-    info->use = GetDeviceUse(dev, &info->attachment);
-    info->num_classes = 0;
-    info->name_len = strlen(dev->name);
-    info->enabled = dev->enabled;
-    total_len = sizeof(xXIDeviceInfo);
-
-    len = pad_to_int32(info->name_len);
-    memset(any, 0, len);
-    strncpy(any, dev->name, info->name_len);
-    any += len;
-    total_len += len;
-
-    total_len += ListDeviceClasses(client, dev, any, &info->num_classes);
-    return total_len;
-}
-
-/**
- * Write the class info of the device into the memory pointed to by any, set
- * nclasses to the number of classes in total and return the number of bytes
- * written.
- */
-int
-ListDeviceClasses(ClientPtr client, DeviceIntPtr dev,
-		  char *any, uint16_t *nclasses)
-{
-    int total_len = 0;
-    int len;
-    int i;
-    int rc;
-
-    /* Check if the current device state should be suppressed */
-    rc = XaceHook(XACE_DEVICE_ACCESS, client, dev, DixReadAccess);
-
-    if (dev->button)
-    {
-        (*nclasses)++;
-        len = ListButtonInfo(dev, (xXIButtonInfo*)any, rc == Success);
-        any += len;
-        total_len += len;
-    }
-
-    if (dev->key)
-    {
-        (*nclasses)++;
-        len = ListKeyInfo(dev, (xXIKeyInfo*)any);
-        any += len;
-        total_len += len;
-    }
-
-    for (i = 0; dev->valuator && i < dev->valuator->numAxes; i++)
-    {
-        (*nclasses)++;
-        len = ListValuatorInfo(dev, (xXIValuatorInfo*)any, i, rc == Success);
-        any += len;
-        total_len += len;
-    }
-
-    return total_len;
-}
-
-static void
-SwapDeviceInfo(DeviceIntPtr dev, xXIDeviceInfo* info)
-{
-    char n;
-    char *any = (char*)&info[1];
-    int i;
-
-    /* Skip over name */
-    any += pad_to_int32(info->name_len);
-
-    for (i = 0; i < info->num_classes; i++)
-    {
-        int len = ((xXIAnyInfo*)any)->length;
-        switch(((xXIAnyInfo*)any)->type)
-        {
-            case XIButtonClass:
-                SwapButtonInfo(dev, (xXIButtonInfo*)any);
-                break;
-            case XIKeyClass:
-                SwapKeyInfo(dev, (xXIKeyInfo*)any);
-                break;
-            case XIValuatorClass:
-                SwapValuatorInfo(dev, (xXIValuatorInfo*)any);
-                break;
-        }
-
-        any += len * 4;
-    }
-
-    swaps(&info->deviceid, n);
-    swaps(&info->use, n);
-    swaps(&info->attachment, n);
-    swaps(&info->num_classes, n);
-    swaps(&info->name_len, n);
-
-}
+/*

+ * Copyright © 2009 Red Hat, Inc.

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice (including the next

+ * paragraph) shall be included in all copies or substantial portions of the

+ * Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

+ * DEALINGS IN THE SOFTWARE.

+ *

+ * Authors: Peter Hutterer

+ *

+ */

+

+/**

+ * @file Protocol handling for the XIQueryDevice request/reply.

+ */

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include "inputstr.h"

+#include <X11/X.h>

+#include <X11/Xatom.h>

+#include <X11/extensions/XI2proto.h>

+#include "xkbstr.h"

+#include "xkbsrv.h"

+#include "xserver-properties.h"

+#include "exevents.h"

+#include "xace.h"

+

+#include "xiquerydevice.h"

+

+static Bool ShouldSkipDevice(ClientPtr client, int deviceid, DeviceIntPtr d);

+static int

+ListDeviceInfo(ClientPtr client, DeviceIntPtr dev, xXIDeviceInfo* info);

+static int SizeDeviceInfo(DeviceIntPtr dev);

+static void SwapDeviceInfo(DeviceIntPtr dev, xXIDeviceInfo* info);

+int

+SProcXIQueryDevice(ClientPtr client)

+{

+    char n;

+

+    REQUEST(xXIQueryDeviceReq);

+

+    swaps(&stuff->length, n);

+    swaps(&stuff->deviceid, n);

+

+    return ProcXIQueryDevice(client);

+}

+

+int

+ProcXIQueryDevice(ClientPtr client)

+{

+    xXIQueryDeviceReply rep;

+    DeviceIntPtr dev = NULL;

+    int rc = Success;

+    int i = 0, len = 0;

+    char *info, *ptr;

+    Bool *skip = NULL;

+

+    REQUEST(xXIQueryDeviceReq);

+    REQUEST_SIZE_MATCH(xXIQueryDeviceReq);

+

+    if (stuff->deviceid != XIAllDevices && stuff->deviceid != XIAllMasterDevices)

+    {

+        rc = dixLookupDevice(&dev, stuff->deviceid, client, DixGetAttrAccess);

+        if (rc != Success)

+        {

+            client->errorValue = stuff->deviceid;

+            return rc;

+        }

+        len += SizeDeviceInfo(dev);

+    }

+    else

+    {

+        skip = calloc(sizeof(Bool), inputInfo.numDevices);

+        if (!skip)

+            return BadAlloc;

+

+        for (dev = inputInfo.devices; dev; dev = dev->next, i++)

+        {

+            skip[i] = ShouldSkipDevice(client, stuff->deviceid, dev);

+            if (!skip[i])

+                len += SizeDeviceInfo(dev);

+        }

+

+        for (dev = inputInfo.off_devices; dev; dev = dev->next, i++)

+        {

+            skip[i] = ShouldSkipDevice(client, stuff->deviceid, dev);

+            if (!skip[i])

+                len += SizeDeviceInfo(dev);

+        }

+    }

+

+    info = calloc(1, len);

+    if (!info)

+        return BadAlloc;

+

+    memset(&rep, 0, sizeof(xXIQueryDeviceReply));

+    rep.repType = X_Reply;

+    rep.RepType = X_XIQueryDevice;

+    rep.sequenceNumber = client->sequence;

+    rep.length = len/4;

+    rep.num_devices = 0;

+

+    ptr = info;

+    if (dev)

+    {

+        len = ListDeviceInfo(client, dev, (xXIDeviceInfo*)info);

+        if (client->swapped)

+            SwapDeviceInfo(dev, (xXIDeviceInfo*)info);

+        info += len;

+        rep.num_devices = 1;

+    } else

+    {

+        i = 0;

+        for (dev = inputInfo.devices; dev; dev = dev->next, i++)

+        {

+            if (!skip[i])

+            {

+                len = ListDeviceInfo(client, dev, (xXIDeviceInfo*)info);

+                if (client->swapped)

+                    SwapDeviceInfo(dev, (xXIDeviceInfo*)info);

+                info += len;

+                rep.num_devices++;

+            }

+        }

+

+        for (dev = inputInfo.off_devices; dev; dev = dev->next, i++)

+        {

+            if (!skip[i])

+            {

+                len = ListDeviceInfo(client, dev, (xXIDeviceInfo*)info);

+                if (client->swapped)

+                    SwapDeviceInfo(dev, (xXIDeviceInfo*)info);

+                info += len;

+                rep.num_devices++;

+            }

+        }

+    }

+

+    WriteReplyToClient(client, sizeof(xXIQueryDeviceReply), &rep);

+    WriteToClient(client, rep.length * 4, ptr);

+    free(ptr);

+    free(skip);

+    return rc;

+}

+

+void

+SRepXIQueryDevice(ClientPtr client, int size, xXIQueryDeviceReply *rep)

+{

+    char n;

+

+    swaps(&rep->sequenceNumber, n);

+    swapl(&rep->length, n);

+    swaps(&rep->num_devices, n);

+

+    /* Device info is already swapped, see ProcXIQueryDevice */

+

+    WriteToClient(client, size, (char *)rep);

+}

+

+

+/**

+ * @return Whether the device should be included in the returned list.

+ */

+static Bool

+ShouldSkipDevice(ClientPtr client, int deviceid, DeviceIntPtr dev)

+{

+    /* if all devices are not being queried, only master devices are */

+    if (deviceid == XIAllDevices || IsMaster(dev))

+    {

+        int rc = XaceHook(XACE_DEVICE_ACCESS, client, dev, DixGetAttrAccess);

+        if (rc == Success)

+            return FALSE;

+    }

+    return TRUE;

+}

+

+/**

+ * @return The number of bytes needed to store this device's xXIDeviceInfo

+ * (and its classes).

+ */

+static int

+SizeDeviceInfo(DeviceIntPtr dev)

+{

+    int len = sizeof(xXIDeviceInfo);

+

+    /* 4-padded name */

+    len += pad_to_int32(strlen(dev->name));

+

+    return len + SizeDeviceClasses(dev);

+

+}

+

+/*

+ * @return The number of bytes needed to store this device's classes.

+ */

+int

+SizeDeviceClasses(DeviceIntPtr dev)

+{

+    int len = 0;

+

+    if (dev->button)

+    {

+        len += sizeof(xXIButtonInfo);

+        len += dev->button->numButtons * sizeof(Atom);

+        len += pad_to_int32(bits_to_bytes(dev->button->numButtons));

+    }

+

+    if (dev->key)

+    {

+        XkbDescPtr xkb = dev->key->xkbInfo->desc;

+        len += sizeof(xXIKeyInfo);

+        len += (xkb->max_key_code - xkb->min_key_code + 1) * sizeof(uint32_t);

+    }

+

+    if (dev->valuator)

+        len += sizeof(xXIValuatorInfo) * dev->valuator->numAxes;

+

+    return len;

+}

+

+

+/**

+ * Write button information into info.

+ * @return Number of bytes written into info.

+ */

+int

+ListButtonInfo(DeviceIntPtr dev, xXIButtonInfo* info, Bool reportState)

+{

+    unsigned char *bits;

+    int mask_len;

+    int i;

+

+    if (!dev || !dev->button)

+	return 0;

+

+    mask_len = bytes_to_int32(bits_to_bytes(dev->button->numButtons));

+

+    info->type = ButtonClass;

+    info->num_buttons = dev->button->numButtons;

+    info->length = bytes_to_int32(sizeof(xXIButtonInfo)) +

+                   info->num_buttons + mask_len;

+    info->sourceid = dev->button->sourceid;

+

+    bits = (unsigned char*)&info[1];

+    memset(bits, 0, mask_len * 4);

+

+    if (reportState)

+	for (i = 0; i < dev->button->numButtons; i++)

+	    if (BitIsOn(dev->button->down, i))

+		SetBit(bits, i);

+

+    bits += mask_len * 4;

+    memcpy(bits, dev->button->labels, dev->button->numButtons * sizeof(Atom));

+

+    return info->length * 4;

+}

+

+static void

+SwapButtonInfo(DeviceIntPtr dev, xXIButtonInfo* info)

+{

+    char n;

+    Atom *btn;

+    int i;

+    swaps(&info->type, n);

+    swaps(&info->length, n);

+    swaps(&info->sourceid, n);

+

+    for (i = 0, btn = (Atom*)&info[1]; i < info->num_buttons; i++, btn++)

+        swaps(btn, n);

+

+    swaps(&info->num_buttons, n);

+}

+

+/**

+ * Write key information into info.

+ * @return Number of bytes written into info.

+ */

+int

+ListKeyInfo(DeviceIntPtr dev, xXIKeyInfo* info)

+{

+    int i;

+    XkbDescPtr xkb = dev->key->xkbInfo->desc;

+    uint32_t *kc;

+

+    info->type = KeyClass;

+    info->num_keycodes = xkb->max_key_code - xkb->min_key_code + 1;

+    info->length = sizeof(xXIKeyInfo)/4 + info->num_keycodes;

+    info->sourceid = dev->key->sourceid;

+

+    kc = (uint32_t*)&info[1];

+    for (i = xkb->min_key_code; i <= xkb->max_key_code; i++, kc++)

+        *kc = i;

+

+    return info->length * 4;

+}

+

+static void

+SwapKeyInfo(DeviceIntPtr dev, xXIKeyInfo* info)

+{

+    char n;

+    uint32_t *key;

+    int i;

+    swaps(&info->type, n);

+    swaps(&info->length, n);

+    swaps(&info->sourceid, n);

+

+    for (i = 0, key = (uint32_t*)&info[1]; i < info->num_keycodes; i++, key++)

+        swapl(key, n);

+

+    swaps(&info->num_keycodes, n);

+}

+

+/**

+ * List axis information for the given axis.

+ *

+ * @return The number of bytes written into info.

+ */

+int

+ListValuatorInfo(DeviceIntPtr dev, xXIValuatorInfo* info, int axisnumber,

+		 Bool reportState)

+{

+    ValuatorClassPtr v = dev->valuator;

+

+    info->type = ValuatorClass;

+    info->length = sizeof(xXIValuatorInfo)/4;

+    info->label = v->axes[axisnumber].label;

+    info->min.integral = v->axes[axisnumber].min_value;

+    info->min.frac = 0;

+    info->max.integral = v->axes[axisnumber].max_value;

+    info->max.frac = 0;

+    info->value.integral = (int)v->axisVal[axisnumber];

+    info->value.frac = (int)(v->axisVal[axisnumber] * (1 << 16) * (1 << 16));

+    info->resolution = v->axes[axisnumber].resolution;

+    info->number = axisnumber;

+    info->mode = v->mode; /* Server doesn't have per-axis mode yet */

+    info->sourceid = v->sourceid;

+

+    if (!reportState)

+	info->value = info->min;

+

+    return info->length * 4;

+}

+

+static void

+SwapValuatorInfo(DeviceIntPtr dev, xXIValuatorInfo* info)

+{

+    char n;

+    swaps(&info->type, n);

+    swaps(&info->length, n);

+    swapl(&info->label, n);

+    swapl(&info->min.integral, n);

+    swapl(&info->min.frac, n);

+    swapl(&info->max.integral, n);

+    swapl(&info->max.frac, n);

+    swaps(&info->number, n);

+    swaps(&info->sourceid, n);

+}

+

+int GetDeviceUse(DeviceIntPtr dev, uint16_t *attachment)

+{

+    DeviceIntPtr master = dev->u.master;

+    int use;

+

+    if (IsMaster(dev))

+    {

+        DeviceIntPtr paired = GetPairedDevice(dev);

+        use = IsPointerDevice(dev) ? XIMasterPointer : XIMasterKeyboard;

+        *attachment = (paired ? paired->id : 0);

+    } else if (master)

+    {

+        use = IsPointerDevice(master) ? XISlavePointer : XISlaveKeyboard;

+        *attachment = master->id;

+    } else

+        use = XIFloatingSlave;

+

+    return use;

+}

+

+/**

+ * Write the info for device dev into the buffer pointed to by info.

+ *

+ * @return The number of bytes used.

+ */

+static int

+ListDeviceInfo(ClientPtr client, DeviceIntPtr dev, xXIDeviceInfo* info)

+{

+    char *any = (char*)&info[1];

+    int len = 0, total_len = 0;

+

+    info->deviceid = dev->id;

+    info->use = GetDeviceUse(dev, &info->attachment);

+    info->num_classes = 0;

+    info->name_len = strlen(dev->name);

+    info->enabled = dev->enabled;

+    total_len = sizeof(xXIDeviceInfo);

+

+    len = pad_to_int32(info->name_len);

+    memset(any, 0, len);

+    strncpy(any, dev->name, info->name_len);

+    any += len;

+    total_len += len;

+

+    total_len += ListDeviceClasses(client, dev, any, &info->num_classes);

+    return total_len;

+}

+

+/**

+ * Write the class info of the device into the memory pointed to by any, set

+ * nclasses to the number of classes in total and return the number of bytes

+ * written.

+ */

+int

+ListDeviceClasses(ClientPtr client, DeviceIntPtr dev,

+		  char *any, uint16_t *nclasses)

+{

+    int total_len = 0;

+    int len;

+    int i;

+    int rc;

+

+    /* Check if the current device state should be suppressed */

+    rc = XaceHook(XACE_DEVICE_ACCESS, client, dev, DixReadAccess);

+

+    if (dev->button)

+    {

+        (*nclasses)++;

+        len = ListButtonInfo(dev, (xXIButtonInfo*)any, rc == Success);

+        any += len;

+        total_len += len;

+    }

+

+    if (dev->key)

+    {

+        (*nclasses)++;

+        len = ListKeyInfo(dev, (xXIKeyInfo*)any);

+        any += len;

+        total_len += len;

+    }

+

+    for (i = 0; dev->valuator && i < dev->valuator->numAxes; i++)

+    {

+        (*nclasses)++;

+        len = ListValuatorInfo(dev, (xXIValuatorInfo*)any, i, rc == Success);

+        any += len;

+        total_len += len;

+    }

+

+    return total_len;

+}

+

+static void

+SwapDeviceInfo(DeviceIntPtr dev, xXIDeviceInfo* info)

+{

+    char n;

+    char *any = (char*)&info[1];

+    int i;

+

+    /* Skip over name */

+    any += pad_to_int32(info->name_len);

+

+    for (i = 0; i < info->num_classes; i++)

+    {

+        int len = ((xXIAnyInfo*)any)->length;

+        switch(((xXIAnyInfo*)any)->type)

+        {

+            case XIButtonClass:

+                SwapButtonInfo(dev, (xXIButtonInfo*)any);

+                break;

+            case XIKeyClass:

+                SwapKeyInfo(dev, (xXIKeyInfo*)any);

+                break;

+            case XIValuatorClass:

+                SwapValuatorInfo(dev, (xXIValuatorInfo*)any);

+                break;

+        }

+

+        any += len * 4;

+    }

+

+    swaps(&info->deviceid, n);

+    swaps(&info->use, n);

+    swaps(&info->attachment, n);

+    swaps(&info->num_classes, n);

+    swaps(&info->name_len, n);

+

+}