aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/Xi/listdev.c
diff options
context:
space:
mode:
Diffstat (limited to 'xorg-server/Xi/listdev.c')
-rw-r--r--xorg-server/Xi/listdev.c381
1 files changed, 381 insertions, 0 deletions
diff --git a/xorg-server/Xi/listdev.c b/xorg-server/Xi/listdev.c
new file mode 100644
index 000000000..041de7635
--- /dev/null
+++ b/xorg-server/Xi/listdev.c
@@ -0,0 +1,381 @@
+/************************************************************
+
+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.
+
+********************************************************/
+
+/***********************************************************************
+ *
+ * Extension function to list the available input devices.
+ *
+ */
+
+#define NEED_EVENTS
+#define NEED_REPLIES
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h> /* for inputstr.h */
+#include <X11/Xproto.h> /* Request macro */
+#include "inputstr.h" /* DeviceIntPtr */
+#include <X11/extensions/XI.h>
+#include <X11/extensions/XIproto.h>
+#include "XIstubs.h"
+#include "extnsionst.h"
+#include "exglobals.h" /* FIXME */
+#include "xace.h"
+
+#include "listdev.h"
+
+#define VPC 20 /* Max # valuators per chunk */
+
+/***********************************************************************
+ *
+ * This procedure lists the input devices available to the server.
+ *
+ */
+
+int
+SProcXListInputDevices(ClientPtr client)
+{
+ char n;
+
+ REQUEST(xListInputDevicesReq);
+ swaps(&stuff->length, n);
+ return (ProcXListInputDevices(client));
+}
+
+/***********************************************************************
+ *
+ * This procedure calculates the size of the information to be returned
+ * for an input device.
+ *
+ */
+
+static void
+SizeDeviceInfo(DeviceIntPtr d, int *namesize, int *size)
+{
+ int chunks;
+
+ *namesize += 1;
+ if (d->name)
+ *namesize += strlen(d->name);
+ if (d->key != NULL)
+ *size += sizeof(xKeyInfo);
+ if (d->button != NULL)
+ *size += sizeof(xButtonInfo);
+ if (d->valuator != NULL) {
+ chunks = ((int)d->valuator->numAxes + 19) / VPC;
+ *size += (chunks * sizeof(xValuatorInfo) +
+ d->valuator->numAxes * sizeof(xAxisInfo));
+ }
+}
+
+/***********************************************************************
+ *
+ * This procedure copies data to the DeviceInfo struct, swapping if necessary.
+ *
+ * We need the extra byte in the allocated buffer, because the trailing null
+ * hammers one extra byte, which is overwritten by the next name except for
+ * the last name copied.
+ *
+ */
+
+static void
+CopyDeviceName(char **namebuf, char *name)
+{
+ char *nameptr = (char *)*namebuf;
+
+ if (name) {
+ *nameptr++ = strlen(name);
+ strcpy(nameptr, name);
+ *namebuf += (strlen(name) + 1);
+ } else {
+ *nameptr++ = 0;
+ *namebuf += 1;
+ }
+}
+
+/***********************************************************************
+ *
+ * This procedure copies ButtonClass information, swapping if necessary.
+ *
+ */
+
+static void
+CopySwapButtonClass(ClientPtr client, ButtonClassPtr b, char **buf)
+{
+ char n;
+ xButtonInfoPtr b2;
+
+ b2 = (xButtonInfoPtr) * buf;
+ b2->class = ButtonClass;
+ b2->length = sizeof(xButtonInfo);
+ b2->num_buttons = b->numButtons;
+ if (client->swapped) {
+ swaps(&b2->num_buttons, n); /* macro - braces are required */
+ }
+ *buf += sizeof(xButtonInfo);
+}
+
+/***********************************************************************
+ *
+ * This procedure copies data to the DeviceInfo struct, swapping if necessary.
+ *
+ */
+
+static void
+CopySwapDevice(ClientPtr client, DeviceIntPtr d, int num_classes,
+ char **buf)
+{
+ char n;
+ xDeviceInfoPtr dev;
+
+ dev = (xDeviceInfoPtr) * buf;
+
+ dev->id = d->id;
+ dev->type = d->type;
+ dev->num_classes = num_classes;
+ if (d == inputInfo.keyboard)
+ dev->use = IsXKeyboard;
+ else if (d == inputInfo.pointer)
+ dev->use = IsXPointer;
+ else if (d->key && d->kbdfeed)
+ dev->use = IsXExtensionKeyboard;
+ else if (d->valuator && d->button)
+ dev->use = IsXExtensionPointer;
+ else
+ dev->use = IsXExtensionDevice;
+ if (client->swapped) {
+ swapl(&dev->type, n); /* macro - braces are required */
+ }
+ *buf += sizeof(xDeviceInfo);
+}
+
+/***********************************************************************
+ *
+ * This procedure copies KeyClass information, swapping if necessary.
+ *
+ */
+
+static void
+CopySwapKeyClass(ClientPtr client, KeyClassPtr k, char **buf)
+{
+ char n;
+ xKeyInfoPtr k2;
+
+ k2 = (xKeyInfoPtr) * buf;
+ k2->class = KeyClass;
+ k2->length = sizeof(xKeyInfo);
+ k2->min_keycode = k->curKeySyms.minKeyCode;
+ k2->max_keycode = k->curKeySyms.maxKeyCode;
+ k2->num_keys = k2->max_keycode - k2->min_keycode + 1;
+ if (client->swapped) {
+ swaps(&k2->num_keys, n);
+ }
+ *buf += sizeof(xKeyInfo);
+}
+
+/***********************************************************************
+ *
+ * This procedure copies ValuatorClass information, swapping if necessary.
+ *
+ * Devices may have up to 255 valuators. The length of a ValuatorClass is
+ * defined to be sizeof(ValuatorClassInfo) + num_axes * sizeof (xAxisInfo).
+ * The maximum length is therefore (8 + 255 * 12) = 3068. However, the
+ * length field is one byte. If a device has more than 20 valuators, we
+ * must therefore return multiple valuator classes to the client.
+ *
+ */
+
+static int
+CopySwapValuatorClass(ClientPtr client, ValuatorClassPtr v, char **buf)
+{
+ int i, j, axes, t_axes;
+ char n;
+ xValuatorInfoPtr v2;
+ AxisInfo *a;
+ xAxisInfoPtr a2;
+
+ for (i = 0, axes = v->numAxes; i < ((v->numAxes + 19) / VPC);
+ i++, axes -= VPC) {
+ t_axes = axes < VPC ? axes : VPC;
+ if (t_axes < 0)
+ t_axes = v->numAxes % VPC;
+ v2 = (xValuatorInfoPtr) * buf;
+ v2->class = ValuatorClass;
+ v2->length = sizeof(xValuatorInfo) + t_axes * sizeof(xAxisInfo);
+ v2->num_axes = t_axes;
+ v2->mode = v->mode & DeviceMode;
+ v2->motion_buffer_size = v->numMotionEvents;
+ if (client->swapped) {
+ swapl(&v2->motion_buffer_size, n);
+ }
+ *buf += sizeof(xValuatorInfo);
+ a = v->axes + (VPC * i);
+ a2 = (xAxisInfoPtr) * buf;
+ for (j = 0; j < t_axes; j++) {
+ a2->min_value = a->min_value;
+ a2->max_value = a->max_value;
+ a2->resolution = a->resolution;
+ if (client->swapped) {
+ swapl(&a2->min_value, n);
+ swapl(&a2->max_value, n);
+ swapl(&a2->resolution, n);
+ }
+ a2++;
+ a++;
+ *buf += sizeof(xAxisInfo);
+ }
+ }
+ return (i);
+}
+
+/***********************************************************************
+ *
+ * This procedure lists information to be returned for an input device.
+ *
+ */
+
+static void
+ListDeviceInfo(ClientPtr client, DeviceIntPtr d, xDeviceInfoPtr dev,
+ char **devbuf, char **classbuf, char **namebuf)
+{
+ CopyDeviceName(namebuf, d->name);
+ CopySwapDevice(client, d, 0, devbuf);
+ if (d->key != NULL) {
+ CopySwapKeyClass(client, d->key, classbuf);
+ dev->num_classes++;
+ }
+ if (d->button != NULL) {
+ CopySwapButtonClass(client, d->button, classbuf);
+ dev->num_classes++;
+ }
+ if (d->valuator != NULL) {
+ dev->num_classes +=
+ CopySwapValuatorClass(client, d->valuator, classbuf);
+ }
+}
+
+/***********************************************************************
+ *
+ * This procedure lists the input devices available to the server.
+ *
+ */
+
+int
+ProcXListInputDevices(ClientPtr client)
+{
+ xListInputDevicesReply rep;
+ int numdevs = 0;
+ int namesize = 1; /* need 1 extra byte for strcpy */
+ int rc, size = 0;
+ int total_length;
+ char *devbuf;
+ char *classbuf;
+ char *namebuf;
+ char *savbuf;
+ xDeviceInfo *dev;
+ DeviceIntPtr d;
+
+ REQUEST_SIZE_MATCH(xListInputDevicesReq);
+
+ rep.repType = X_Reply;
+ rep.RepType = X_ListInputDevices;
+ rep.length = 0;
+ rep.sequenceNumber = client->sequence;
+
+ AddOtherInputDevices();
+
+ for (d = inputInfo.devices; d; d = d->next) {
+ rc = XaceHook(XACE_DEVICE_ACCESS, client, d, DixGetAttrAccess);
+ if (rc != Success)
+ return rc;
+ SizeDeviceInfo(d, &namesize, &size);
+ numdevs++;
+ }
+ for (d = inputInfo.off_devices; d; d = d->next) {
+ rc = XaceHook(XACE_DEVICE_ACCESS, client, d, DixGetAttrAccess);
+ if (rc != Success)
+ return rc;
+ SizeDeviceInfo(d, &namesize, &size);
+ numdevs++;
+ }
+
+ total_length = numdevs * sizeof(xDeviceInfo) + size + namesize;
+ devbuf = (char *)xalloc(total_length);
+ classbuf = devbuf + (numdevs * sizeof(xDeviceInfo));
+ namebuf = classbuf + size;
+ savbuf = devbuf;
+
+ dev = (xDeviceInfoPtr) devbuf;
+ for (d = inputInfo.devices; d; d = d->next, dev++)
+ ListDeviceInfo(client, d, dev, &devbuf, &classbuf, &namebuf);
+ for (d = inputInfo.off_devices; d; d = d->next, dev++)
+ ListDeviceInfo(client, d, dev, &devbuf, &classbuf, &namebuf);
+
+ rep.ndevices = numdevs;
+ rep.length = (total_length + 3) >> 2;
+ WriteReplyToClient(client, sizeof(xListInputDevicesReply), &rep);
+ WriteToClient(client, total_length, savbuf);
+ xfree(savbuf);
+ return Success;
+}
+
+/***********************************************************************
+ *
+ * This procedure writes the reply for the XListInputDevices function,
+ * if the client and server have a different byte ordering.
+ *
+ */
+
+void
+SRepXListInputDevices(ClientPtr client, int size, xListInputDevicesReply * rep)
+{
+ char n;
+
+ swaps(&rep->sequenceNumber, n);
+ swapl(&rep->length, n);
+ WriteToClient(client, size, (char *)rep);
+}