/************************************************************ Copyright 1989, 1998 The Open Group 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. The above copyright notice and this permission notice 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 OPEN GROUP 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. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. Copyright 1989 by Hewlett-Packard Company, Palo Alto, California. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, 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 Hewlett-Packard not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL HEWLETT-PACKARD 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. ********************************************************/ /*********************************************************************** * * XGetDeviceControl - get the Device control state of an extension device. * */ #ifdef HAVE_CONFIG_H #include #endif #include #include #include #include #include #include #include "XIint.h" #include XDeviceControl * XGetDeviceControl( register Display *dpy, XDevice *dev, int control) { XDeviceControl *Device = NULL; XDeviceControl *Sav = NULL; xDeviceState *d = NULL; xDeviceState *sav = NULL; xGetDeviceControlReq *req; xGetDeviceControlReply rep; XExtDisplayInfo *info = XInput_find_display(dpy); LockDisplay(dpy); if (_XiCheckExtInit(dpy, XInput_Add_XChangeDeviceControl, info) == -1) return ((XDeviceControl *) NoSuchExtension); GetReq(GetDeviceControl, req); req->reqType = info->codes->major_opcode; req->ReqType = X_GetDeviceControl; req->deviceid = dev->device_id; req->control = control; if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) goto out; if (rep.length > 0) { unsigned long nbytes; size_t size = 0; if (rep.length < (INT_MAX >> 2)) { nbytes = (unsigned long) rep.length << 2; d = Xmalloc(nbytes); } if (!d) { _XEatDataWords(dpy, rep.length); goto out; } sav = d; _XRead(dpy, (char *)d, nbytes); /* In theory, we should just be able to use d->length to get the size. * Turns out that a number of X servers (up to and including server * 1.4) sent the wrong length value down the wire. So to not break * apps that run against older servers, we have to calculate the size * manually. */ switch (d->control) { case DEVICE_RESOLUTION: { xDeviceResolutionState *r; size_t val_size; r = (xDeviceResolutionState *) d; if (r->num_valuators >= (INT_MAX / (3 * sizeof(int)))) goto out; val_size = 3 * sizeof(int) * r->num_valuators; if ((sizeof(xDeviceResolutionState) + val_size) > nbytes) goto out; size = sizeof(XDeviceResolutionState) + val_size; break; } case DEVICE_ABS_CALIB: { if (sizeof(xDeviceAbsCalibState) > nbytes) goto out; size = sizeof(XDeviceAbsCalibState); break; } case DEVICE_ABS_AREA: { if (sizeof(xDeviceAbsAreaState) > nbytes) goto out; size = sizeof(XDeviceAbsAreaState); break; } case DEVICE_CORE: { if (sizeof(xDeviceCoreState) > nbytes) goto out; size = sizeof(XDeviceCoreState); break; } default: if (d->length > nbytes) goto out; size = d->length; break; } Device = Xmalloc(size); if (!Device) goto out; Sav = Device; d = sav; switch (control) { case DEVICE_RESOLUTION: { int *iptr, *iptr2; xDeviceResolutionState *r; XDeviceResolutionState *R; unsigned int i; r = (xDeviceResolutionState *) d; R = (XDeviceResolutionState *) Device; R->control = DEVICE_RESOLUTION; R->length = sizeof(XDeviceResolutionState); R->num_valuators = r->num_valuators; iptr = (int *)(R + 1); iptr2 = (int *)(r + 1); R->resolutions = iptr; R->min_resolutions = iptr + R->num_valuators; R->max_resolutions = iptr + (2 * R->num_valuators); for (i = 0; i < (3 * R->num_valuators); i++) *iptr++ = *iptr2++; break; } case DEVICE_ABS_CALIB: { xDeviceAbsCalibState *c = (xDeviceAbsCalibState *) d; XDeviceAbsCalibState *C = (XDeviceAbsCalibState *) Device; C->control = DEVICE_ABS_CALIB; C->length = sizeof(XDeviceAbsCalibState); C->min_x = c->min_x; C->max_x = c->max_x; C->min_y = c->min_y; C->max_y = c->max_y; C->flip_x = c->flip_x; C->flip_y = c->flip_y; C->rotation = c->rotation; C->button_threshold = c->button_threshold; break; } case DEVICE_ABS_AREA: { xDeviceAbsAreaState *a = (xDeviceAbsAreaState *) d; XDeviceAbsAreaState *A = (XDeviceAbsAreaState *) Device; A->control = DEVICE_ABS_AREA; A->length = sizeof(XDeviceAbsAreaState); A->offset_x = a->offset_x; A->offset_y = a->offset_y; A->width = a->width; A->height = a->height; A->screen = a->screen; A->following = a->following; break; } case DEVICE_CORE: { xDeviceCoreState *c = (xDeviceCoreState *) d; XDeviceCoreState *C = (XDeviceCoreState *) Device; C->control = DEVICE_CORE; C->length = sizeof(XDeviceCoreState); C->status = c->status; C->iscore = c->iscore; break; } case DEVICE_ENABLE: { xDeviceEnableState *e = (xDeviceEnableState *) d; XDeviceEnableState *E = (XDeviceEnableState *) Device; E->control = DEVICE_ENABLE; E->length = sizeof(E); E->enable = e->enable; break; } default: break; } } out: XFree(sav); UnlockDisplay(dpy); SyncHandle(); return (Sav); } void XFreeDeviceControl(XDeviceControl *control) { XFree(control); }