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    REQUEST_AT_LEAST_SIZE(xXIPassiveGrabDeviceReq);
57
58    swaps(&stuff->length, n);
59    swaps(&stuff->deviceid, n);
60    swapl(&stuff->grab_window, n);
61    swapl(&stuff->cursor, n);
62    swapl(&stuff->time, n);
63    swapl(&stuff->detail, n);
64    swaps(&stuff->mask_len, n);
65    swaps(&stuff->num_modifiers, n);
66
67    REQUEST_FIXED_SIZE(xXIPassiveGrabDeviceReq,
68        ((uint32_t) stuff->mask_len + stuff->num_modifiers) *4);
69    mods = (xXIModifierInfo*)&stuff[1];
70
71    for (i = 0; i < stuff->num_modifiers; i++, mods++)
72    {
73        swapl(&mods->base_mods, n);
74        swapl(&mods->latched_mods, n);
75        swapl(&mods->locked_mods, n);
76    }
77
78    return ProcXIPassiveGrabDevice(client);
79}
80
81int
82ProcXIPassiveGrabDevice(ClientPtr client)
83{
84    DeviceIntPtr dev, mod_dev;
85    xXIPassiveGrabDeviceReply rep;
86    int i, ret = Success;
87    uint8_t status;
88    uint32_t *modifiers;
89    xXIGrabModifierInfo *modifiers_failed;
90    GrabMask mask;
91    GrabParameters param;
92    void *tmp;
93    int mask_len;
94    int n;
95    uint32_t length;
96
97    REQUEST(xXIPassiveGrabDeviceReq);
98    REQUEST_FIXED_SIZE(xXIPassiveGrabDeviceReq,
99        ((uint32_t) stuff->mask_len + stuff->num_modifiers) * 4);
100
101    if (stuff->deviceid == XIAllDevices)
102        dev = inputInfo.all_devices;
103    else if (stuff->deviceid == XIAllMasterDevices)
104        dev = inputInfo.all_master_devices;
105    else
106    {
107        ret = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
108        if (ret != Success)
109        {
110            client->errorValue = stuff->deviceid;
111            return ret;
112        }
113    }
114
115    if (stuff->grab_type != XIGrabtypeButton &&
116        stuff->grab_type != XIGrabtypeKeycode &&
117        stuff->grab_type != XIGrabtypeEnter &&
118        stuff->grab_type != XIGrabtypeFocusIn)
119    {
120        client->errorValue = stuff->grab_type;
121        return BadValue;
122    }
123
124    if ((stuff->grab_type == XIGrabtypeEnter ||
125         stuff->grab_type == XIGrabtypeFocusIn) && stuff->detail != 0)
126    {
127        client->errorValue = stuff->detail;
128        return BadValue;
129    }
130
131    if (XICheckInvalidMaskBits(client, (unsigned char*)&stuff[1],
132                               stuff->mask_len * 4) != Success)
133        return BadValue;
134
135    mask_len = min(sizeof(mask.xi2mask[stuff->deviceid]), stuff->mask_len * 4);
136    memset(mask.xi2mask, 0, sizeof(mask.xi2mask));
137    memcpy(mask.xi2mask[stuff->deviceid], &stuff[1], mask_len * 4);
138
139    rep.repType = X_Reply;
140    rep.RepType = X_XIPassiveGrabDevice;
141    rep.length = 0;
142    rep.sequenceNumber = client->sequence;
143    rep.num_modifiers = 0;
144
145    memset(&param, 0, sizeof(param));
146    param.grabtype = GRABTYPE_XI2;
147    param.ownerEvents = stuff->owner_events;
148    param.grabWindow = stuff->grab_window;
149    param.cursor = stuff->cursor;
150
151    if (IsKeyboardDevice(dev)) {
152        param.this_device_mode = stuff->grab_mode;
153        param.other_devices_mode = stuff->paired_device_mode;
154    } else {
155        param.this_device_mode = stuff->paired_device_mode;
156        param.other_devices_mode = stuff->grab_mode;
157    }
158
159    if (stuff->cursor != None)
160    {
161        status = dixLookupResourceByType(&tmp, stuff->cursor,
162                                         RT_CURSOR, client, DixUseAccess);
163	if (status != Success)
164	{
165	    client->errorValue = stuff->cursor;
166	    return status;
167	}
168    }
169
170    status = dixLookupWindow((WindowPtr*)&tmp, stuff->grab_window, client, DixSetAttrAccess);
171    if (status != Success)
172	return status;
173
174    status = CheckGrabValues(client, &param);
175    if (status != Success)
176        return status;
177
178    modifiers = (uint32_t*)&stuff[1] + stuff->mask_len;
179    modifiers_failed = calloc(stuff->num_modifiers, sizeof(xXIGrabModifierInfo));
180    if (!modifiers_failed)
181        return BadAlloc;
182
183    if (!IsMaster(dev) && dev->u.master)
184        mod_dev = GetMaster(dev, MASTER_KEYBOARD);
185    else
186        mod_dev = dev;
187
188    for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
189    {
190        param.modifiers = *modifiers;
191        switch(stuff->grab_type)
192        {
193            case XIGrabtypeButton:
194                status = GrabButton(client, dev, mod_dev, stuff->detail,
195                                    &param, GRABTYPE_XI2, &mask);
196                break;
197            case XIGrabtypeKeycode:
198                status = GrabKey(client, dev, mod_dev, stuff->detail,
199                                 &param, GRABTYPE_XI2, &mask);
200                break;
201            case XIGrabtypeEnter:
202            case XIGrabtypeFocusIn:
203                status = GrabWindow(client, dev, stuff->grab_type,
204                                    &param, &mask);
205                break;
206        }
207
208        if (status != GrabSuccess)
209        {
210            xXIGrabModifierInfo *info = modifiers_failed + rep.num_modifiers;
211
212            info->status = status;
213            info->modifiers = *modifiers;
214            if (client->swapped)
215                swapl(&info->modifiers, n);
216
217            rep.num_modifiers++;
218            rep.length += bytes_to_int32(sizeof(xXIGrabModifierInfo));
219        }
220    }
221
222    /* save the value before SRepXIPassiveGrabDevice swaps it */
223    length = rep.length;
224    WriteReplyToClient(client, sizeof(rep), &rep);
225    if (rep.num_modifiers)
226        WriteToClient(client, length * 4, (char*)modifiers_failed);
227
228    free(modifiers_failed);
229    return ret;
230}
231
232void
233SRepXIPassiveGrabDevice(ClientPtr client, int size,
234                        xXIPassiveGrabDeviceReply * rep)
235{
236    char n;
237
238    swaps(&rep->sequenceNumber, n);
239    swapl(&rep->length, n);
240    swaps(&rep->num_modifiers, n);
241
242    WriteToClient(client, size, (char *)rep);
243}
244
245int
246SProcXIPassiveUngrabDevice(ClientPtr client)
247{
248    char n;
249    int i;
250    uint32_t *modifiers;
251
252    REQUEST(xXIPassiveUngrabDeviceReq);
253    REQUEST_AT_LEAST_SIZE(xXIPassiveUngrabDeviceReq);
254
255    swaps(&stuff->length, n);
256    swapl(&stuff->grab_window, n);
257    swaps(&stuff->deviceid, n);
258    swapl(&stuff->detail, n);
259    swaps(&stuff->num_modifiers, n);
260
261    REQUEST_FIXED_SIZE(xXIPassiveUngrabDeviceReq,
262                       ((uint32_t) stuff->num_modifiers) << 2);
263    modifiers = (uint32_t*)&stuff[1];
264
265    for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
266        swapl(modifiers, n);
267
268    return ProcXIPassiveUngrabDevice(client);
269}
270
271int
272ProcXIPassiveUngrabDevice(ClientPtr client)
273{
274    DeviceIntPtr dev, mod_dev;
275    WindowPtr win;
276    GrabRec tempGrab;
277    uint32_t* modifiers;
278    int i, rc;
279
280    REQUEST(xXIPassiveUngrabDeviceReq);
281    REQUEST_FIXED_SIZE(xXIPassiveUngrabDeviceReq,
282                       ((uint32_t) stuff->num_modifiers) << 2);
283
284    if (stuff->deviceid == XIAllDevices)
285        dev = inputInfo.all_devices;
286    else if (stuff->deviceid == XIAllMasterDevices)
287        dev = inputInfo.all_master_devices;
288    else
289    {
290        rc = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
291        if (rc != Success)
292	    return rc;
293    }
294
295    if (stuff->grab_type != XIGrabtypeButton &&
296        stuff->grab_type != XIGrabtypeKeycode &&
297        stuff->grab_type != XIGrabtypeEnter &&
298        stuff->grab_type != XIGrabtypeFocusIn)
299    {
300        client->errorValue = stuff->grab_type;
301        return BadValue;
302    }
303
304    if ((stuff->grab_type == XIGrabtypeEnter ||
305         stuff->grab_type == XIGrabtypeFocusIn) && stuff->detail != 0)
306    {
307        client->errorValue = stuff->detail;
308        return BadValue;
309    }
310
311    rc = dixLookupWindow(&win, stuff->grab_window, client, DixSetAttrAccess);
312    if (rc != Success)
313        return rc;
314
315    if (!IsMaster(dev) && dev->u.master)
316        mod_dev = GetMaster(dev, MASTER_KEYBOARD);
317    else
318        mod_dev = dev;
319
320    tempGrab.resource = client->clientAsMask;
321    tempGrab.device = dev;
322    tempGrab.window = win;
323    switch(stuff->grab_type)
324    {
325        case XIGrabtypeButton:  tempGrab.type = XI_ButtonPress; break;
326        case XIGrabtypeKeycode:  tempGrab.type = XI_KeyPress;    break;
327        case XIGrabtypeEnter:   tempGrab.type = XI_Enter;       break;
328        case XIGrabtypeFocusIn: tempGrab.type = XI_FocusIn;     break;
329    }
330    tempGrab.grabtype = GRABTYPE_XI2;
331    tempGrab.modifierDevice = mod_dev;
332    tempGrab.modifiersDetail.pMask = NULL;
333    tempGrab.detail.exact = stuff->detail;
334    tempGrab.detail.pMask = NULL;
335
336    modifiers = (uint32_t*)&stuff[1];
337
338    for (i = 0; i < stuff->num_modifiers; i++, modifiers++)
339    {
340        tempGrab.modifiersDetail.exact = *modifiers;
341        DeletePassiveGrabFromList(&tempGrab);
342    }
343
344    return Success;
345}
346