xipassivegrab.c revision 6747b715 
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
47int
48SProcXIPassiveGrabDevice(ClientPtr client)
49{
50    int i;
51    char n;
52    xXIModifierInfo *mods;
53
54    REQUEST(xXIPassiveGrabDeviceReq);
55
56    swaps(&stuff->length, n);
57    swaps(&stuff->deviceid, n);
58    swapl(&stuff->grab_window, n);
59    swapl(&stuff->cursor, n);
60    swapl(&stuff->time, n);
61    swapl(&stuff->detail, n);
62    swaps(&stuff->mask_len, n);
63    swaps(&stuff->num_modifiers, n);
64
65    mods = (xXIModifierInfo*)&stuff[1];
66
67    for (i = 0; i < stuff->num_modifiers; i++, mods++)
68    {
69        swapl(&mods->base_mods, n);
70        swapl(&mods->latched_mods, n);
71        swapl(&mods->locked_mods, n);
72    }
73
74    return ProcXIPassiveGrabDevice(client);
75}
76
77int
78ProcXIPassiveGrabDevice(ClientPtr client)
79{
80    DeviceIntPtr dev, mod_dev;
81    xXIPassiveGrabDeviceReply rep;
82    int i, ret = Success;
83    uint8_t status;
84    uint32_t *modifiers;
85    xXIGrabModifierInfo *modifiers_failed;
86    GrabMask mask;
87    GrabParameters param;
88    void *tmp;
89    int mask_len;
90
91    REQUEST(xXIPassiveGrabDeviceReq);
92    REQUEST_AT_LEAST_SIZE(xXIPassiveGrabDeviceReq);
93
94    if (stuff->deviceid == XIAllDevices)
95        dev = inputInfo.all_devices;
96    else if (stuff->deviceid == XIAllMasterDevices)
97        dev = inputInfo.all_master_devices;
98    else
99    {
100        ret = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
101        if (ret != Success)
102            return ret;
103    }
104
105    if (stuff->grab_type != XIGrabtypeButton &&
106        stuff->grab_type != XIGrabtypeKeycode &&
107        stuff->grab_type != XIGrabtypeEnter &&
108        stuff->grab_type != XIGrabtypeFocusIn)
109    {
110        client->errorValue = stuff->grab_type;
111        return BadValue;
112    }
113
114    if ((stuff->grab_type == XIGrabtypeEnter ||
115         stuff->grab_type == XIGrabtypeFocusIn) && stuff->detail != 0)
116    {
117        client->errorValue = stuff->detail;
118        return BadValue;
119    }
120
121    if (XICheckInvalidMaskBits((unsigned char*)&stuff[1],
122                               stuff->mask_len * 4) != Success)
123        return BadValue;
124
125    mask_len = min(sizeof(mask.xi2mask[stuff->deviceid]), stuff->mask_len * 4);
126    memset(mask.xi2mask, 0, sizeof(mask.xi2mask));
127    memcpy(mask.xi2mask[stuff->deviceid], &stuff[1], mask_len * 4);
128
129    rep.repType = X_Reply;
130    rep.RepType = X_XIPassiveGrabDevice;
131    rep.length = 0;
132    rep.sequenceNumber = client->sequence;
133    rep.num_modifiers = 0;
134
135    memset(&param, 0, sizeof(param));
136    param.grabtype = GRABTYPE_XI2;
137    param.ownerEvents = stuff->owner_events;
138    param.this_device_mode = stuff->grab_mode;
139    param.other_devices_mode = stuff->paired_device_mode;
140    param.grabWindow = stuff->grab_window;
141    param.cursor = stuff->cursor;
142
143    if (stuff->cursor != None)
144    {
145        status = dixLookupResourceByType(&tmp, stuff->cursor,
146                                         RT_CURSOR, client, DixUseAccess);
147	if (status != Success)
148	{
149	    client->errorValue = stuff->cursor;
150	    return status;
151	}
152    }
153
154    status = dixLookupWindow((WindowPtr*)&tmp, stuff->grab_window, client, DixSetAttrAccess);
155    if (status != Success)
156	return status;
157
158    status = CheckGrabValues(client, &param);
159
160    modifiers = (uint32_t*)&stuff[1] + stuff->mask_len;
161    modifiers_failed = calloc(stuff->num_modifiers, sizeof(xXIGrabModifierInfo));
162    if (!modifiers_failed)
163        return BadAlloc;
164
165    if (!IsMaster(dev) && dev->u.master)
166        mod_dev = GetMaster(dev, MASTER_KEYBOARD);
167    else
168        mod_dev = dev;
169
170    for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
171    {
172        param.modifiers = *modifiers;
173        switch(stuff->grab_type)
174        {
175            case XIGrabtypeButton:
176                status = GrabButton(client, dev, mod_dev, stuff->detail,
177                                    &param, GRABTYPE_XI2, &mask);
178                break;
179            case XIGrabtypeKeycode:
180                status = GrabKey(client, dev, mod_dev, stuff->detail,
181                                 &param, GRABTYPE_XI2, &mask);
182                break;
183            case XIGrabtypeEnter:
184            case XIGrabtypeFocusIn:
185                status = GrabWindow(client, dev, stuff->grab_type,
186                                    &param, &mask);
187                break;
188        }
189
190        if (status != GrabSuccess)
191        {
192            xXIGrabModifierInfo *info = modifiers_failed + rep.num_modifiers;
193
194            info->status = status;
195            info->modifiers = *modifiers;
196            rep.num_modifiers++;
197            rep.length++;
198        }
199    }
200
201    WriteReplyToClient(client, sizeof(rep), &rep);
202    if (rep.num_modifiers)
203    {
204	client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write;
205        WriteSwappedDataToClient(client, rep.num_modifiers * 4, (char*)modifiers_failed);
206    }
207    free(modifiers_failed);
208    return ret;
209}
210
211void
212SRepXIPassiveGrabDevice(ClientPtr client, int size,
213                        xXIPassiveGrabDeviceReply * rep)
214{
215    char n;
216
217    swaps(&rep->sequenceNumber, n);
218    swapl(&rep->length, n);
219    swaps(&rep->num_modifiers, n);
220
221    WriteToClient(client, size, (char *)rep);
222}
223
224int
225SProcXIPassiveUngrabDevice(ClientPtr client)
226{
227    char n;
228    int i;
229    uint32_t *modifiers;
230
231    REQUEST(xXIPassiveUngrabDeviceReq);
232
233    swaps(&stuff->length, n);
234    swapl(&stuff->grab_window, n);
235    swaps(&stuff->deviceid, n);
236    swapl(&stuff->detail, n);
237    swaps(&stuff->num_modifiers, n);
238
239    modifiers = (uint32_t*)&stuff[1];
240
241    for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
242        swapl(modifiers, n);
243
244    return ProcXIPassiveUngrabDevice(client);
245}
246
247int
248ProcXIPassiveUngrabDevice(ClientPtr client)
249{
250    DeviceIntPtr dev, mod_dev;
251    WindowPtr win;
252    GrabRec tempGrab;
253    uint32_t* modifiers;
254    int i, rc;
255
256    REQUEST(xXIPassiveUngrabDeviceReq);
257    REQUEST_AT_LEAST_SIZE(xXIPassiveUngrabDeviceReq);
258
259    rc = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
260    if (rc != Success)
261	return rc;
262
263    if (stuff->grab_type != XIGrabtypeButton &&
264        stuff->grab_type != XIGrabtypeKeycode &&
265        stuff->grab_type != XIGrabtypeEnter &&
266        stuff->grab_type != XIGrabtypeFocusIn)
267    {
268        client->errorValue = stuff->grab_type;
269        return BadValue;
270    }
271
272    if ((stuff->grab_type == XIGrabtypeEnter ||
273         stuff->grab_type == XIGrabtypeFocusIn) && stuff->detail != 0)
274    {
275        client->errorValue = stuff->detail;
276        return BadValue;
277    }
278
279    rc = dixLookupWindow(&win, stuff->grab_window, client, DixSetAttrAccess);
280    if (rc != Success)
281        return rc;
282
283    if (!IsMaster(dev) && dev->u.master)
284        mod_dev = GetMaster(dev, MASTER_KEYBOARD);
285    else
286        mod_dev = dev;
287
288    tempGrab.resource = client->clientAsMask;
289    tempGrab.device = dev;
290    tempGrab.window = win;
291    switch(stuff->grab_type)
292    {
293        case XIGrabtypeButton:  tempGrab.type = XI_ButtonPress; break;
294        case XIGrabtypeKeycode:  tempGrab.type = XI_KeyPress;    break;
295        case XIGrabtypeEnter:   tempGrab.type = XI_Enter;       break;
296        case XIGrabtypeFocusIn: tempGrab.type = XI_FocusIn;     break;
297    }
298    tempGrab.grabtype = GRABTYPE_XI2;
299    tempGrab.modifierDevice = mod_dev;
300    tempGrab.modifiersDetail.pMask = NULL;
301    tempGrab.detail.exact = stuff->detail;
302    tempGrab.detail.pMask = NULL;
303
304    modifiers = (uint32_t*)&stuff[1];
305
306    for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
307    {
308        tempGrab.modifiersDetail.exact = *modifiers;
309        DeletePassiveGrabFromList(&tempGrab);
310    }
311
312    return Success;
313}
314