Xi/sendexev.c

   1 /************************************************************
   2
   3 Copyright 1989, 1998  The Open Group
   4
   5 Permission to use, copy, modify, distribute, and sell this software and its
   6 documentation for any purpose is hereby granted without fee, provided that
   7 the above copyright notice appear in all copies and that both that
   8 copyright notice and this permission notice appear in supporting
   9 documentation.
  10
  11 The above copyright notice and this permission notice shall be included in
  12 all copies or substantial portions of the Software.
  13
  14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  17 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  18 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  19 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20
  21 Except as contained in this notice, the name of The Open Group shall not be
  22 used in advertising or otherwise to promote the sale, use or other dealings
  23 in this Software without prior written authorization from The Open Group.
  24
  25 Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.
  26
  27                         All Rights Reserved
  28
  29 Permission to use, copy, modify, and distribute this software and its
  30 documentation for any purpose and without fee is hereby granted,
  31 provided that the above copyright notice appear in all copies and that
  32 both that copyright notice and this permission notice appear in
  33 supporting documentation, and that the name of Hewlett-Packard not be
  34 used in advertising or publicity pertaining to distribution of the
  35 software without specific, written prior permission.
  36
  37 HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
  38 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
  39 HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
  40 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  41 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  42 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  43 SOFTWARE.
  44
  45 ********************************************************/
  46
  47 /***********************************************************************
  48  *
  49  * Request to send an extension event.
  50  *
  51  */
  52
  53 #ifdef HAVE_DIX_CONFIG_H
  54 #include <dix-config.h>
  55 #endif
  56
  57 #include "inputstr.h"           /* DeviceIntPtr      */
  58 #include "windowstr.h"          /* Window            */
  59 #include "extnsionst.h"         /* EventSwapPtr      */
  60 #include <X11/extensions/XI.h>
  61 #include <X11/extensions/XIproto.h>
  62 #include "exevents.h"
  63 #include "exglobals.h"
  64
  65 #include "grabdev.h"
  66 #include "sendexev.h"
  67
  68 extern int lastEvent;           /* Defined in extension.c */
  69
  70 /***********************************************************************
  71  *
  72  * Handle requests from clients with a different byte order than us.
  73  *
  74  */
  75
  76 int
  77 SProcXSendExtensionEvent(ClientPtr client)
  78 {
  79     CARD32 *p;
  80     int i;
  81     xEvent eventT;
  82     xEvent *eventP;
  83     EventSwapPtr proc;
  84
  85     REQUEST(xSendExtensionEventReq);
  86     swaps(&stuff->length);
  87     REQUEST_AT_LEAST_SIZE(xSendExtensionEventReq);
  88     swapl(&stuff->destination);
  89     swaps(&stuff->count);
  90
  91     if (stuff->length !=
  92         bytes_to_int32(sizeof(xSendExtensionEventReq)) + stuff->count +
  93         bytes_to_int32(stuff->num_events * sizeof(xEvent)))
  94         return BadLength;
  95
  96     eventP = (xEvent *) &stuff[1];
  97     for (i = 0; i < stuff->num_events; i++, eventP++) {
  98         proc = EventSwapVector[eventP->u.u.type & 0177];
  99         if (proc == NotImplemented)     /* no swapping proc; invalid event type? */
 100             return BadValue;
 101         (*proc) (eventP, &eventT);
 102         *eventP = eventT;
 103     }
 104
 105     p = (CARD32 *) (((xEvent *) &stuff[1]) + stuff->num_events);
 106     SwapLongs(p, stuff->count);
 107     return (ProcXSendExtensionEvent(client));
 108 }
 109
 110 /***********************************************************************
 111  *
 112  * Send an event to some client, as if it had come from an extension input
 113  * device.
 114  *
 115  */
 116
 117 int
 118 ProcXSendExtensionEvent(ClientPtr client)
 119 {
 120     int ret;
 121     DeviceIntPtr dev;
 122     xEvent *first;
 123     XEventClass *list;
 124     struct tmask tmp[EMASKSIZE];
 125
 126     REQUEST(xSendExtensionEventReq);
 127     REQUEST_AT_LEAST_SIZE(xSendExtensionEventReq);
 128
 129     if (stuff->length !=
 130         bytes_to_int32(sizeof(xSendExtensionEventReq)) + stuff->count +
 131         (stuff->num_events * bytes_to_int32(sizeof(xEvent))))
 132         return BadLength;
 133
 134     ret = dixLookupDevice(&dev, stuff->deviceid, client, DixWriteAccess);
 135     if (ret != Success)
 136         return ret;
 137
 138     /* The client's event type must be one defined by an extension. */
 139
 140     first = ((xEvent *) &stuff[1]);
 141     if (!((EXTENSION_EVENT_BASE <= first->u.u.type) &&
 142           (first->u.u.type < lastEvent))) {
 143         client->errorValue = first->u.u.type;
 144         return BadValue;
 145     }
 146
 147     list = (XEventClass *) (first + stuff->num_events);
 148     if ((ret = CreateMaskFromList(client, list, stuff->count, tmp, dev,
 149                                   X_SendExtensionEvent)) != Success)
 150         return ret;
 151
 152     ret = (SendEvent(client, dev, stuff->destination,
 153                      stuff->propagate, (xEvent *) &stuff[1],
 154                      tmp[stuff->deviceid].mask, stuff->num_events));
 155
 156     return ret;
 157 }