xipassivegrab.c revision 9ace9065 
1/*
2 * Copyright © 2009 Red Hat, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Author: Peter Hutterer
24 */
25
26/***********************************************************************
27 *
28 * Request to grab or ungrab input device.
29 *
30 */
31
32#ifdef HAVE_DIX_CONFIG_H
33#include <dix-config.h>
34#endif
35
36#include "inputstr.h"	/* DeviceIntPtr      */
37#include "windowstr.h"	/* window structure  */
38#include <X11/extensions/XI2.h>
39#include <X11/extensions/XI2proto.h>
40#include "swaprep.h"
41
42#include "exglobals.h" /* BadDevice */
43#include "exevents.h"
44#include "xipassivegrab.h"
45#include "dixgrabs.h"
46#include "misc.h"
47
48int
49SProcXIPassiveGrabDevice(ClientPtr client)
50{
51    int i;
52    char n;
53    xXIModifierInfo *mods;
54
55    REQUEST(xXIPassiveGrabDeviceReq);
56
57    swaps(&stuff->length, n);
58    swaps(&stuff->deviceid, n);
59    swapl(&stuff->grab_window, n);
60    swapl(&stuff->cursor, n);
61    swapl(&stuff->time, n);
62    swapl(&stuff->detail, n);
63    swaps(&stuff->mask_len, n);
64    swaps(&stuff->num_modifiers, n);
65
66    mods = (xXIModifierInfo*)&stuff[1];
67
68    for (i = 0; i < stuff->num_modifiers; i++, mods++)
69    {
70        swapl(&mods->base_mods, n);
71        swapl(&mods->latched_mods, n);
72        swapl(&mods->locked_mods, n);
73    }
74
75    return ProcXIPassiveGrabDevice(client);
76}
77
78int
79ProcXIPassiveGrabDevice(ClientPtr client)
80{
81    DeviceIntPtr dev, mod_dev;
82    xXIPassiveGrabDeviceReply rep;
83    int i, ret = Success;
84    uint8_t status;
85    uint32_t *modifiers;
86    xXIGrabModifierInfo *modifiers_failed;
87    GrabMask mask;
88    GrabParameters param;
89    void *tmp;
90    int mask_len;
91    int n;
92
93    REQUEST(xXIPassiveGrabDeviceReq);
94    REQUEST_AT_LEAST_SIZE(xXIPassiveGrabDeviceReq);
95
96    if (stuff->deviceid == XIAllDevices)
97        dev = inputInfo.all_devices;
98    else if (stuff->deviceid == XIAllMasterDevices)
99        dev = inputInfo.all_master_devices;
100    else
101    {
102        ret = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
103        if (ret != Success)
104        {
105            client->errorValue = stuff->deviceid;
106            return ret;
107        }
108    }
109
110    if (stuff->grab_type != XIGrabtypeButton &&
111        stuff->grab_type != XIGrabtypeKeycode &&
112        stuff->grab_type != XIGrabtypeEnter &&
113        stuff->grab_type != XIGrabtypeFocusIn)
114    {
115        client->errorValue = stuff->grab_type;
116        return BadValue;
117    }
118
119    if ((stuff->grab_type == XIGrabtypeEnter ||
120         stuff->grab_type == XIGrabtypeFocusIn) && stuff->detail != 0)
121    {
122        client->errorValue = stuff->detail;
123        return BadValue;
124    }
125
126    if (XICheckInvalidMaskBits(client, (unsigned char*)&stuff[1],
127                               stuff->mask_len * 4) != Success)
128        return BadValue;
129
130    mask_len = min(sizeof(mask.xi2mask[stuff->deviceid]), stuff->mask_len * 4);
131    memset(mask.xi2mask, 0, sizeof(mask.xi2mask));
132    memcpy(mask.xi2mask[stuff->deviceid], &stuff[1], mask_len * 4);
133
134    rep.repType = X_Reply;
135    rep.RepType = X_XIPassiveGrabDevice;
136    rep.length = 0;
137    rep.sequenceNumber = client->sequence;
138    rep.num_modifiers = 0;
139
140    memset(&param, 0, sizeof(param));
141    param.grabtype = GRABTYPE_XI2;
142    param.ownerEvents = stuff->owner_events;
143    param.this_device_mode = stuff->grab_mode;
144    param.other_devices_mode = stuff->paired_device_mode;
145    param.grabWindow = stuff->grab_window;
146    param.cursor = stuff->cursor;
147
148    if (stuff->cursor != None)
149    {
150        status = dixLookupResourceByType(&tmp, stuff->cursor,
151                                         RT_CURSOR, client, DixUseAccess);
152	if (status != Success)
153	{
154	    client->errorValue = stuff->cursor;
155	    return status;
156	}
157    }
158
159    status = dixLookupWindow((WindowPtr*)&tmp, stuff->grab_window, client, DixSetAttrAccess);
160    if (status != Success)
161	return status;
162
163    status = CheckGrabValues(client, &param);
164    if (status != Success)
165        return status;
166
167    modifiers = (uint32_t*)&stuff[1] + stuff->mask_len;
168    modifiers_failed = calloc(stuff->num_modifiers, sizeof(xXIGrabModifierInfo));
169    if (!modifiers_failed)
170        return BadAlloc;
171
172    if (!IsMaster(dev) && dev->u.master)
173        mod_dev = GetMaster(dev, MASTER_KEYBOARD);
174    else
175        mod_dev = dev;
176
177    for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
178    {
179        param.modifiers = *modifiers;
180        switch(stuff->grab_type)
181        {
182            case XIGrabtypeButton:
183                status = GrabButton(client, dev, mod_dev, stuff->detail,
184                                    &param, GRABTYPE_XI2, &mask);
185                break;
186            case XIGrabtypeKeycode:
187                status = GrabKey(client, dev, mod_dev, stuff->detail,
188                                 &param, GRABTYPE_XI2, &mask);
189                break;
190            case XIGrabtypeEnter:
191            case XIGrabtypeFocusIn:
192                status = GrabWindow(client, dev, stuff->grab_type,
193                                    &param, &mask);
194                break;
195        }
196
197        if (status != GrabSuccess)
198        {
199            xXIGrabModifierInfo *info = modifiers_failed + rep.num_modifiers;
200
201            info->status = status;
202            info->modifiers = *modifiers;
203            if (client->swapped)
204                swapl(&info->modifiers, n);
205
206            rep.num_modifiers++;
207            rep.length += bytes_to_int32(sizeof(xXIGrabModifierInfo));
208        }
209    }
210
211    WriteReplyToClient(client, sizeof(rep), &rep);
212    if (rep.num_modifiers)
213        WriteToClient(client, rep.length * 4, (char*)modifiers_failed);
214
215    free(modifiers_failed);
216    return ret;
217}
218
219void
220SRepXIPassiveGrabDevice(ClientPtr client, int size,
221                        xXIPassiveGrabDeviceReply * rep)
222{
223    char n;
224
225    swaps(&rep->sequenceNumber, n);
226    swapl(&rep->length, n);
227    swaps(&rep->num_modifiers, n);
228
229    WriteToClient(client, size, (char *)rep);
230}
231
232int
233SProcXIPassiveUngrabDevice(ClientPtr client)
234{
235    char n;
236    int i;
237    uint32_t *modifiers;
238
239    REQUEST(xXIPassiveUngrabDeviceReq);
240
241    swaps(&stuff->length, n);
242    swapl(&stuff->grab_window, n);
243    swaps(&stuff->deviceid, n);
244    swapl(&stuff->detail, n);
245    swaps(&stuff->num_modifiers, n);
246
247    modifiers = (uint32_t*)&stuff[1];
248
249    for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
250        swapl(modifiers, n);
251
252    return ProcXIPassiveUngrabDevice(client);
253}
254
255int
256ProcXIPassiveUngrabDevice(ClientPtr client)
257{
258    DeviceIntPtr dev, mod_dev;
259    WindowPtr win;
260    GrabRec tempGrab;
261    uint32_t* modifiers;
262    int i, rc;
263
264    REQUEST(xXIPassiveUngrabDeviceReq);
265    REQUEST_AT_LEAST_SIZE(xXIPassiveUngrabDeviceReq);
266
267    rc = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
268    if (rc != Success)
269	return rc;
270
271    if (stuff->grab_type != XIGrabtypeButton &&
272        stuff->grab_type != XIGrabtypeKeycode &&
273        stuff->grab_type != XIGrabtypeEnter &&
274        stuff->grab_type != XIGrabtypeFocusIn)
275    {
276        client->errorValue = stuff->grab_type;
277        return BadValue;
278    }
279
280    if ((stuff->grab_type == XIGrabtypeEnter ||
281         stuff->grab_type == XIGrabtypeFocusIn) && stuff->detail != 0)
282    {
283        client->errorValue = stuff->detail;
284        return BadValue;
285    }
286
287    rc = dixLookupWindow(&win, stuff->grab_window, client, DixSetAttrAccess);
288    if (rc != Success)
289        return rc;
290
291    if (!IsMaster(dev) && dev->u.master)
292        mod_dev = GetMaster(dev, MASTER_KEYBOARD);
293    else
294        mod_dev = dev;
295
296    tempGrab.resource = client->clientAsMask;
297    tempGrab.device = dev;
298    tempGrab.window = win;
299    switch(stuff->grab_type)
300    {
301        case XIGrabtypeButton:  tempGrab.type = XI_ButtonPress; break;
302        case XIGrabtypeKeycode:  tempGrab.type = XI_KeyPress;    break;
303        case XIGrabtypeEnter:   tempGrab.type = XI_Enter;       break;
304        case XIGrabtypeFocusIn: tempGrab.type = XI_FocusIn;     break;
305    }
306    tempGrab.grabtype = GRABTYPE_XI2;
307    tempGrab.modifierDevice = mod_dev;
308    tempGrab.modifiersDetail.pMask = NULL;
309    tempGrab.detail.exact = stuff->detail;
310    tempGrab.detail.pMask = NULL;
311
312    modifiers = (uint32_t*)&stuff[1];
313
314    for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
315    {
316        tempGrab.modifiersDetail.exact = *modifiers;
317        DeletePassiveGrabFromList(&tempGrab);
318    }
319
320    return Success;
321}
322