xenocara/xserver/test/xi2/protocol-xiselectevents.c

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/**
* 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.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
/*
* Protocol testing for XISelectEvents request.
*
* Test approach:
*
* Wrap XISetEventMask to intercept when the server tries to apply the event
* mask. Ensure that the mask passed in is equivalent to the one supplied by
* the client. Ensure that invalid devices and invalid masks return errors
* as appropriate.
*
* Tests included:
* BadValue for num_masks < 0
* BadWindow for invalid windows
* BadDevice for non-existing devices
* BadImplemenation for devices >= 0xFF
* BadValue if HierarchyChanged bit is set for devices other than
* XIAllDevices
* BadValue for invalid mask bits
* Sucecss for excessive mask lengths
*
*/
#include <stdint.h>
#include <X11/X.h>
#include <X11/Xproto.h>
#include <X11/extensions/XI2proto.h>
#include "inputstr.h"
#include "windowstr.h"
#include "extinit.h" /* for XInputExtensionInit */
#include "scrnintstr.h"
#include "exglobals.h"
#include "xiselectev.h"
#include "protocol-common.h"
static unsigned char *data[4096 * 20]; /* the request data buffer */
ClientRec client_window;
int
__real_XISetEventMask(DeviceIntPtr dev, WindowPtr win, ClientPtr client,
int len, unsigned char *mask);
int
__wrap_XISetEventMask(DeviceIntPtr dev, WindowPtr win, ClientPtr client,
int len, unsigned char *mask)
{
if (!enable_XISetEventMask_wrap)
return __real_XISetEventMask(dev, win, client, len, mask);
return Success;
}
static void
request_XISelectEvent(xXISelectEventsReq * req, int error)
{
int i;
int rc;
ClientRec client;
xXIEventMask *mask, *next;
req->length = (sz_xXISelectEventsReq / 4);
mask = (xXIEventMask *) &req[1];
for (i = 0; i < req->num_masks; i++) {
req->length += sizeof(xXIEventMask) / 4 + mask->mask_len;
mask = (xXIEventMask *) ((char *) &mask[1] + mask->mask_len * 4);
}
client = init_client(req->length, req);
rc = ProcXISelectEvents(&client);
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assert(rc == error);
client.swapped = TRUE;
mask = (xXIEventMask *) &req[1];
for (i = 0; i < req->num_masks; i++) {
next = (xXIEventMask *) ((char *) &mask[1] + mask->mask_len * 4);
swaps(&mask->deviceid);
swaps(&mask->mask_len);
mask = next;
}
swapl(&req->win);
swaps(&req->length);
swaps(&req->num_masks);
rc = SProcXISelectEvents(&client);
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assert(rc == error);
}
static void
_set_bit(unsigned char *bits, int bit)
{
SetBit(bits, bit);
if (bit >= XI_TouchBegin && bit <= XI_TouchOwnership) {
SetBit(bits, XI_TouchBegin);
SetBit(bits, XI_TouchUpdate);
SetBit(bits, XI_TouchEnd);
}
}
static void
_clear_bit(unsigned char *bits, int bit)
{
ClearBit(bits, bit);
if (bit >= XI_TouchBegin && bit <= XI_TouchOwnership) {
ClearBit(bits, XI_TouchBegin);
ClearBit(bits, XI_TouchUpdate);
ClearBit(bits, XI_TouchEnd);
}
}
static void
request_XISelectEvents_masks(xXISelectEventsReq * req)
{
int i, j;
xXIEventMask *mask;
int nmasks = (XI2LASTEVENT + 7) / 8;
unsigned char *bits;
mask = (xXIEventMask *) &req[1];
req->win = ROOT_WINDOW_ID;
/* if a clients submits more than 100 masks, consider it insane and untested */
for (i = 1; i <= 1000; i++) {
req->num_masks = i;
mask->deviceid = XIAllDevices;
/* Test 0:
* mask_len is 0 -> Success
*/
mask->mask_len = 0;
request_XISelectEvent(req, Success);
/* Test 1:
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* mask may be larger than needed for XI2LASTEVENT.
* Test setting each valid mask bit, while leaving unneeded bits 0.
* -> Success
*/
bits = (unsigned char *) &mask[1];
mask->mask_len = (nmasks + 3) / 4 * 10;
memset(bits, 0, mask->mask_len * 4);
for (j = 0; j <= XI2LASTEVENT; j++) {
_set_bit(bits, j);
request_XISelectEvent(req, Success);
_clear_bit(bits, j);
}
/* Test 2:
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* mask may be larger than needed for XI2LASTEVENT.
* Test setting all valid mask bits, while leaving unneeded bits 0.
* -> Success
*/
bits = (unsigned char *) &mask[1];
mask->mask_len = (nmasks + 3) / 4 * 10;
memset(bits, 0, mask->mask_len * 4);
for (j = 0; j <= XI2LASTEVENT; j++) {
_set_bit(bits, j);
request_XISelectEvent(req, Success);
}
/* Test 3:
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* mask is larger than needed for XI2LASTEVENT. If any unneeded bit
* is set -> BadValue
*/
bits = (unsigned char *) &mask[1];
mask->mask_len = (nmasks + 3) / 4 * 10;
memset(bits, 0, mask->mask_len * 4);
for (j = XI2LASTEVENT + 1; j < mask->mask_len * 4; j++) {
_set_bit(bits, j);
request_XISelectEvent(req, BadValue);
_clear_bit(bits, j);
}
/* Test 4:
* Mask len is a sensible length, only valid bits are set -> Success
*/
bits = (unsigned char *) &mask[1];
mask->mask_len = (nmasks + 3) / 4;
memset(bits, 0, mask->mask_len * 4);
for (j = 0; j <= XI2LASTEVENT; j++) {
_set_bit(bits, j);
request_XISelectEvent(req, Success);
}
/* Test 5:
* HierarchyChanged bit is BadValue for devices other than
* XIAllDevices
*/
bits = (unsigned char *) &mask[1];
mask->mask_len = (nmasks + 3) / 4;
memset(bits, 0, mask->mask_len * 4);
SetBit(bits, XI_HierarchyChanged);
mask->deviceid = XIAllDevices;
request_XISelectEvent(req, Success);
for (j = 1; j < devices.num_devices; j++) {
mask->deviceid = j;
request_XISelectEvent(req, BadValue);
}
/* Test 6:
* All bits set minus hierarchy changed bit -> Success
*/
bits = (unsigned char *) &mask[1];
mask->mask_len = (nmasks + 3) / 4;
memset(bits, 0, mask->mask_len * 4);
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for (j = 0; j <= XI2LASTEVENT; j++)
_set_bit(bits, j);
_clear_bit(bits, XI_HierarchyChanged);
for (j = 1; j < 6; j++) {
mask->deviceid = j;
request_XISelectEvent(req, Success);
}
mask =
(xXIEventMask *) ((char *) mask + sizeof(xXIEventMask) +
mask->mask_len * 4);
}
}
static void
test_XISelectEvents(void)
{
int i;
xXIEventMask *mask;
xXISelectEventsReq *req;
req = (xXISelectEventsReq *) data;
request_init(req, XISelectEvents);
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printf("Testing for BadValue on zero-length masks\n");
/* zero masks are BadValue, regardless of the window */
req->num_masks = 0;
req->win = None;
request_XISelectEvent(req, BadValue);
req->win = ROOT_WINDOW_ID;
request_XISelectEvent(req, BadValue);
req->win = CLIENT_WINDOW_ID;
request_XISelectEvent(req, BadValue);
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printf("Testing for BadWindow.\n");
/* None window is BadWindow, regardless of the masks.
* We don't actually need to set the masks here, BadWindow must occur
* before checking the masks.
*/
req->win = None;
req->num_masks = 1;
request_XISelectEvent(req, BadWindow);
req->num_masks = 2;
request_XISelectEvent(req, BadWindow);
req->num_masks = 0xFF;
request_XISelectEvent(req, BadWindow);
/* request size is 3, so 0xFFFC is the highest num_mask that doesn't
* overflow req->length */
req->num_masks = 0xFFFC;
request_XISelectEvent(req, BadWindow);
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printf("Triggering num_masks/length overflow\n");
req->win = ROOT_WINDOW_ID;
/* Integer overflow - req->length can't hold that much */
req->num_masks = 0xFFFF;
request_XISelectEvent(req, BadLength);
req->win = ROOT_WINDOW_ID;
req->num_masks = 1;
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printf("Triggering bogus mask length error\n");
mask = (xXIEventMask *) &req[1];
mask->deviceid = 0;
mask->mask_len = 0xFFFF;
request_XISelectEvent(req, BadLength);
/* testing various device ids */
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printf("Testing existing device ids.\n");
for (i = 0; i < 6; i++) {
mask = (xXIEventMask *) &req[1];
mask->deviceid = i;
mask->mask_len = 1;
req->win = ROOT_WINDOW_ID;
req->num_masks = 1;
request_XISelectEvent(req, Success);
}
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printf("Testing non-existing device ids.\n");
for (i = 6; i <= 0xFFFF; i++) {
req->win = ROOT_WINDOW_ID;
req->num_masks = 1;
mask = (xXIEventMask *) &req[1];
mask->deviceid = i;
mask->mask_len = 1;
request_XISelectEvent(req, BadDevice);
}
request_XISelectEvents_masks(req);
}
int
protocol_xiselectevents_test(void)
{
init_simple();
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test_XISelectEvents();
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return 0;
}