svn merge https://vcxsrv.svn.sourceforge.net/svnroot/vcxsrv/branches/released .

1 files changed, 299 insertions, 0 deletions

diff --git a/xorg-server/Xi/xiselectev.c b/xorg-server/Xi/xiselectev.c
new file mode 100644
index 000000000..672edab3b
--- /dev/null
+++ b/xorg-server/Xi/xiselectev.c
@@ -0,0 +1,299 @@
+/*
+ * Copyright 2008 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.
+ *
+ * Author: Peter Hutterer
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+
+#include "dixstruct.h"
+#include "windowstr.h"
+#include "exglobals.h"
+#include "exevents.h"
+#include <X11/extensions/XI2proto.h>
+
+#include "xiselectev.h"
+
+/**
+ * Check the given mask (in len bytes) for invalid mask bits.
+ * Invalid mask bits are any bits above XI2LastEvent.
+ *
+ * @return BadValue if at least one invalid bit is set or Success otherwise.
+ */
+int XICheckInvalidMaskBits(unsigned char *mask, int len)
+{
+    if (len >= XIMaskLen(XI2LASTEVENT))
+    {
+        int i;
+        for (i = XI2LASTEVENT + 1; i < len * 8; i++)
+            if (BitIsOn(mask, i))
+                return BadValue;
+    }
+
+    return Success;
+}
+
+int
+SProcXISelectEvents(ClientPtr client)
+{
+    char n;
+    int i;
+    xXIEventMask* evmask;
+
+    REQUEST(xXISelectEventsReq);
+    swaps(&stuff->length, n);
+    REQUEST_AT_LEAST_SIZE(xXISelectEventsReq);
+    swapl(&stuff->win, n);
+    swaps(&stuff->num_masks, n);
+
+    evmask = (xXIEventMask*)&stuff[1];
+    for (i = 0; i < stuff->num_masks; i++)
+    {
+        swaps(&evmask->deviceid, n);
+        swaps(&evmask->mask_len, n);
+        evmask = (xXIEventMask*)(((char*)&evmask[1]) + evmask->mask_len * 4);
+    }
+
+    return (ProcXISelectEvents(client));
+}
+
+int
+ProcXISelectEvents(ClientPtr client)
+{
+    int rc, num_masks;
+    WindowPtr win;
+    DeviceIntPtr dev;
+    DeviceIntRec dummy;
+    xXIEventMask *evmask;
+    int *types = NULL;
+    int len;
+
+    REQUEST(xXISelectEventsReq);
+    REQUEST_AT_LEAST_SIZE(xXISelectEventsReq);
+
+    if (stuff->num_masks == 0)
+        return BadValue;
+
+    rc = dixLookupWindow(&win, stuff->win, client, DixReceiveAccess);
+    if (rc != Success)
+        return rc;
+
+    len = sz_xXISelectEventsReq;
+
+    /* check request validity */
+    evmask = (xXIEventMask*)&stuff[1];
+    num_masks = stuff->num_masks;
+    while(num_masks--)
+    {
+        len += sizeof(xXIEventMask) + evmask->mask_len * 4;
+
+        if (bytes_to_int32(len) > stuff->length)
+            return BadLength;
+
+        if (evmask->deviceid != XIAllDevices &&
+            evmask->deviceid != XIAllMasterDevices)
+            rc = dixLookupDevice(&dev, evmask->deviceid, client, DixUseAccess);
+        else {
+            /* XXX: XACE here? */
+        }
+        if (rc != Success)
+            return rc;
+
+        /* hierarchy event mask is not allowed on devices */
+        if (evmask->deviceid != XIAllDevices && evmask->mask_len >= 1)
+        {
+            unsigned char *bits = (unsigned char*)&evmask[1];
+            if (BitIsOn(bits, XI_HierarchyChanged))
+                return BadValue;
+        }
+
+        /* Raw events may only be selected on root windows */
+        if (win->parent && evmask->mask_len >= 1)
+        {
+            unsigned char *bits = (unsigned char*)&evmask[1];
+            if (BitIsOn(bits, XI_RawKeyPress) ||
+                BitIsOn(bits, XI_RawKeyRelease) ||
+                BitIsOn(bits, XI_RawButtonPress) ||
+                BitIsOn(bits, XI_RawButtonRelease) ||
+                BitIsOn(bits, XI_RawMotion))
+                return BadValue;
+        }
+
+        if (XICheckInvalidMaskBits((unsigned char*)&evmask[1],
+                                   evmask->mask_len * 4) != Success)
+            return BadValue;
+
+        evmask = (xXIEventMask*)(((unsigned char*)evmask) + evmask->mask_len * 4);
+        evmask++;
+    }
+
+    if (bytes_to_int32(len) != stuff->length)
+        return BadLength;
+
+    /* Set masks on window */
+    evmask = (xXIEventMask*)&stuff[1];
+    num_masks = stuff->num_masks;
+    while(num_masks--)
+    {
+        if (evmask->deviceid == XIAllDevices ||
+            evmask->deviceid == XIAllMasterDevices)
+        {
+            dummy.id = evmask->deviceid;
+            dev = &dummy;
+        } else
+            dixLookupDevice(&dev, evmask->deviceid, client, DixUseAccess);
+        if (XISetEventMask(dev, win, client, evmask->mask_len * 4,
+                           (unsigned char*)&evmask[1]) != Success)
+            return BadAlloc;
+        evmask = (xXIEventMask*)(((unsigned char*)evmask) + evmask->mask_len * 4);
+        evmask++;
+    }
+
+    RecalculateDeliverableEvents(win);
+
+    xfree(types);
+    return Success;
+}
+
+
+int
+SProcXIGetSelectedEvents(ClientPtr client)
+{
+    char n;
+
+    REQUEST(xXIGetSelectedEventsReq);
+    swaps(&stuff->length, n);
+    REQUEST_SIZE_MATCH(xXIGetSelectedEventsReq);
+    swapl(&stuff->win, n);
+
+    return (ProcXIGetSelectedEvents(client));
+}
+
+int
+ProcXIGetSelectedEvents(ClientPtr client)
+{
+    int rc, i;
+    WindowPtr win;
+    char n;
+    char *buffer = NULL;
+    xXIGetSelectedEventsReply reply;
+    OtherInputMasks *masks;
+    InputClientsPtr others = NULL;
+    xXIEventMask *evmask = NULL;
+    DeviceIntPtr dev;
+
+    REQUEST(xXIGetSelectedEventsReq);
+    REQUEST_SIZE_MATCH(xXIGetSelectedEventsReq);
+
+    rc = dixLookupWindow(&win, stuff->win, client, DixGetAttrAccess);
+    if (rc != Success)
+        return rc;
+
+    reply.repType = X_Reply;
+    reply.RepType = X_XIGetSelectedEvents;
+    reply.length = 0;
+    reply.sequenceNumber = client->sequence;
+    reply.num_masks = 0;
+
+    masks = wOtherInputMasks(win);
+    if (masks)
+    {
+	for (others = wOtherInputMasks(win)->inputClients; others;
+	     others = others->next) {
+	    if (SameClient(others, client)) {
+                break;
+            }
+        }
+    }
+
+    if (!others)
+    {
+        WriteReplyToClient(client, sizeof(xXIGetSelectedEventsReply), &reply);
+        return Success;
+    }
+
+    buffer = xcalloc(MAXDEVICES, sizeof(xXIEventMask) + pad_to_int32(XI2MASKSIZE));
+    if (!buffer)
+        return BadAlloc;
+
+    evmask = (xXIEventMask*)buffer;
+    for (i = 0; i < MAXDEVICES; i++)
+    {
+        int j;
+        unsigned char *devmask = others->xi2mask[i];
+
+        if (i > 2)
+        {
+            rc = dixLookupDevice(&dev, i, client, DixGetAttrAccess);
+            if (rc != Success)
+                continue;
+        }
+
+
+        for (j = XI2MASKSIZE - 1; j >= 0; j--)
+        {
+            if (devmask[j] != 0)
+            {
+                int mask_len = (j + 4)/4; /* j is an index, hence + 4, not + 3 */
+                evmask->deviceid = i;
+                evmask->mask_len = mask_len;
+                reply.num_masks++;
+                reply.length += sizeof(xXIEventMask)/4 + evmask->mask_len;
+
+                if (client->swapped)
+                {
+                    swaps(&evmask->deviceid, n);
+                    swaps(&evmask->mask_len, n);
+                }
+
+                memcpy(&evmask[1], devmask, j + 1);
+                evmask = (xXIEventMask*)((char*)evmask +
+                           sizeof(xXIEventMask) + mask_len * 4);
+                break;
+            }
+        }
+    }
+
+    WriteReplyToClient(client, sizeof(xXIGetSelectedEventsReply), &reply);
+
+    if (reply.num_masks)
+        WriteToClient(client, reply.length * 4, buffer);
+
+    xfree(buffer);
+    return Success;
+}
+
+void SRepXIGetSelectedEvents(ClientPtr client,
+                            int len, xXIGetSelectedEventsReply *rep)
+{
+    char n;
+
+    swaps(&rep->sequenceNumber, n);
+    swapl(&rep->length, n);
+    swaps(&rep->num_masks, n);
+    WriteToClient(client, len, (char *)rep);
+}
+
+