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a09e091a JB |
1 | /************************************************************ |
2 | ||
3 | Copyright 1987, 1989, 1998 The Open Group | |
4 | ||
5 | Permission to use, copy, modify, distribute, and sell this software and its | |
6 | documentation for any purpose is hereby granted without fee, provided that | |
7 | the above copyright notice appear in all copies and that both that | |
8 | copyright notice and this permission notice appear in supporting | |
9 | documentation. | |
10 | ||
11 | The above copyright notice and this permission notice shall be included in | |
12 | all copies or substantial portions of the Software. | |
13 | ||
14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN | |
18 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
19 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
20 | ||
21 | Except as contained in this notice, the name of The Open Group shall not be | |
22 | used in advertising or otherwise to promote the sale, use or other dealings | |
23 | in this Software without prior written authorization from The Open Group. | |
24 | ||
25 | Copyright 1987, 1989 by Digital Equipment Corporation, Maynard, Massachusetts. | |
26 | ||
27 | All Rights Reserved | |
28 | ||
29 | Permission to use, copy, modify, and distribute this software and its | |
30 | documentation for any purpose and without fee is hereby granted, | |
31 | provided that the above copyright notice appear in all copies and that | |
32 | both that copyright notice and this permission notice appear in | |
33 | supporting documentation, and that the name of Digital not be | |
34 | used in advertising or publicity pertaining to distribution of the | |
35 | software without specific, written prior permission. | |
36 | ||
37 | DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |
38 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |
39 | DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR | |
40 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
41 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
42 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
43 | SOFTWARE. | |
44 | ||
45 | ********************************************************/ | |
46 | ||
47 | #ifdef HAVE_DIX_CONFIG_H | |
48 | #include <dix-config.h> | |
49 | #endif | |
50 | ||
51 | #include "windowstr.h" | |
52 | #include "dixstruct.h" | |
53 | #include "dispatch.h" | |
54 | #include "selection.h" | |
55 | #include "xace.h" | |
56 | ||
57 | /***************************************************************** | |
58 | * Selection Stuff | |
59 | * | |
60 | * dixLookupSelection | |
61 | * | |
62 | * Selections are global to the server. The list of selections should | |
63 | * not be traversed directly. Instead, use the functions listed above. | |
64 | * | |
65 | *****************************************************************/ | |
66 | ||
67 | Selection *CurrentSelections; | |
68 | CallbackListPtr SelectionCallback; | |
69 | ||
70 | int | |
71 | dixLookupSelection(Selection ** result, Atom selectionName, | |
72 | ClientPtr client, Mask access_mode) | |
73 | { | |
74 | Selection *pSel; | |
75 | int rc = BadMatch; | |
76 | ||
77 | client->errorValue = selectionName; | |
78 | ||
79 | for (pSel = CurrentSelections; pSel; pSel = pSel->next) | |
80 | if (pSel->selection == selectionName) | |
81 | break; | |
82 | ||
83 | if (pSel) | |
84 | rc = XaceHookSelectionAccess(client, &pSel, access_mode); | |
85 | *result = pSel; | |
86 | return rc; | |
87 | } | |
88 | ||
89 | void | |
90 | InitSelections(void) | |
91 | { | |
92 | Selection *pSel, *pNextSel; | |
93 | ||
94 | pSel = CurrentSelections; | |
95 | while (pSel) { | |
96 | pNextSel = pSel->next; | |
97 | dixFreeObjectWithPrivates(pSel, PRIVATE_SELECTION); | |
98 | pSel = pNextSel; | |
99 | } | |
100 | ||
101 | CurrentSelections = NULL; | |
102 | } | |
103 | ||
104 | static _X_INLINE void | |
105 | CallSelectionCallback(Selection * pSel, ClientPtr client, | |
106 | SelectionCallbackKind kind) | |
107 | { | |
108 | SelectionInfoRec info = { pSel, client, kind }; | |
109 | CallCallbacks(&SelectionCallback, &info); | |
110 | } | |
111 | ||
112 | void | |
113 | DeleteWindowFromAnySelections(WindowPtr pWin) | |
114 | { | |
115 | Selection *pSel; | |
116 | ||
117 | for (pSel = CurrentSelections; pSel; pSel = pSel->next) | |
118 | if (pSel->pWin == pWin) { | |
119 | CallSelectionCallback(pSel, NULL, SelectionWindowDestroy); | |
120 | ||
121 | pSel->pWin = (WindowPtr) NULL; | |
122 | pSel->window = None; | |
123 | pSel->client = NullClient; | |
124 | } | |
125 | } | |
126 | ||
127 | void | |
128 | DeleteClientFromAnySelections(ClientPtr client) | |
129 | { | |
130 | Selection *pSel; | |
131 | ||
132 | for (pSel = CurrentSelections; pSel; pSel = pSel->next) | |
133 | if (pSel->client == client) { | |
134 | CallSelectionCallback(pSel, NULL, SelectionClientClose); | |
135 | ||
136 | pSel->pWin = (WindowPtr) NULL; | |
137 | pSel->window = None; | |
138 | pSel->client = NullClient; | |
139 | } | |
140 | } | |
141 | ||
142 | int | |
143 | ProcSetSelectionOwner(ClientPtr client) | |
144 | { | |
145 | WindowPtr pWin = NULL; | |
146 | TimeStamp time; | |
147 | Selection *pSel; | |
148 | int rc; | |
149 | ||
150 | REQUEST(xSetSelectionOwnerReq); | |
151 | REQUEST_SIZE_MATCH(xSetSelectionOwnerReq); | |
152 | ||
153 | UpdateCurrentTime(); | |
154 | time = ClientTimeToServerTime(stuff->time); | |
155 | ||
156 | /* If the client's time stamp is in the future relative to the server's | |
157 | time stamp, do not set the selection, just return success. */ | |
158 | if (CompareTimeStamps(time, currentTime) == LATER) | |
159 | return Success; | |
160 | ||
161 | if (stuff->window != None) { | |
162 | rc = dixLookupWindow(&pWin, stuff->window, client, DixSetAttrAccess); | |
163 | if (rc != Success) | |
164 | return rc; | |
165 | } | |
166 | if (!ValidAtom(stuff->selection)) { | |
167 | client->errorValue = stuff->selection; | |
168 | return BadAtom; | |
169 | } | |
170 | ||
171 | /* | |
172 | * First, see if the selection is already set... | |
173 | */ | |
174 | rc = dixLookupSelection(&pSel, stuff->selection, client, DixSetAttrAccess); | |
175 | ||
176 | if (rc == Success) { | |
177 | /* If the timestamp in client's request is in the past relative | |
178 | to the time stamp indicating the last time the owner of the | |
179 | selection was set, do not set the selection, just return | |
180 | success. */ | |
181 | if (CompareTimeStamps(time, pSel->lastTimeChanged) == EARLIER) | |
182 | return Success; | |
183 | if (pSel->client && (!pWin || (pSel->client != client))) { | |
184 | xEvent event = { | |
185 | .u.selectionClear.time = time.milliseconds, | |
186 | .u.selectionClear.window = pSel->window, | |
187 | .u.selectionClear.atom = pSel->selection | |
188 | }; | |
189 | event.u.u.type = SelectionClear; | |
190 | WriteEventsToClient(pSel->client, 1, &event); | |
191 | } | |
192 | } | |
193 | else if (rc == BadMatch) { | |
194 | /* | |
195 | * It doesn't exist, so add it... | |
196 | */ | |
197 | pSel = dixAllocateObjectWithPrivates(Selection, PRIVATE_SELECTION); | |
198 | if (!pSel) | |
199 | return BadAlloc; | |
200 | ||
201 | pSel->selection = stuff->selection; | |
202 | ||
203 | /* security creation/labeling check */ | |
204 | rc = XaceHookSelectionAccess(client, &pSel, | |
205 | DixCreateAccess | DixSetAttrAccess); | |
206 | if (rc != Success) { | |
207 | free(pSel); | |
208 | return rc; | |
209 | } | |
210 | ||
211 | pSel->next = CurrentSelections; | |
212 | CurrentSelections = pSel; | |
213 | } | |
214 | else | |
215 | return rc; | |
216 | ||
217 | pSel->lastTimeChanged = time; | |
218 | pSel->window = stuff->window; | |
219 | pSel->pWin = pWin; | |
220 | pSel->client = (pWin ? client : NullClient); | |
221 | ||
222 | CallSelectionCallback(pSel, client, SelectionSetOwner); | |
223 | return Success; | |
224 | } | |
225 | ||
226 | int | |
227 | ProcGetSelectionOwner(ClientPtr client) | |
228 | { | |
229 | int rc; | |
230 | Selection *pSel; | |
231 | xGetSelectionOwnerReply reply; | |
232 | ||
233 | REQUEST(xResourceReq); | |
234 | REQUEST_SIZE_MATCH(xResourceReq); | |
235 | ||
236 | if (!ValidAtom(stuff->id)) { | |
237 | client->errorValue = stuff->id; | |
238 | return BadAtom; | |
239 | } | |
240 | ||
241 | reply = (xGetSelectionOwnerReply) { | |
242 | .type = X_Reply, | |
243 | .sequenceNumber = client->sequence, | |
244 | .length = 0, | |
245 | }; | |
246 | ||
247 | rc = dixLookupSelection(&pSel, stuff->id, client, DixGetAttrAccess); | |
248 | if (rc == Success) | |
249 | reply.owner = pSel->window; | |
250 | else if (rc == BadMatch) | |
251 | reply.owner = None; | |
252 | else | |
253 | return rc; | |
254 | ||
255 | WriteReplyToClient(client, sizeof(xGetSelectionOwnerReply), &reply); | |
256 | return Success; | |
257 | } | |
258 | ||
259 | int | |
260 | ProcConvertSelection(ClientPtr client) | |
261 | { | |
262 | Bool paramsOkay; | |
263 | xEvent event; | |
264 | WindowPtr pWin; | |
265 | Selection *pSel; | |
266 | int rc; | |
267 | ||
268 | REQUEST(xConvertSelectionReq); | |
269 | REQUEST_SIZE_MATCH(xConvertSelectionReq); | |
270 | ||
271 | rc = dixLookupWindow(&pWin, stuff->requestor, client, DixSetAttrAccess); | |
272 | if (rc != Success) | |
273 | return rc; | |
274 | ||
275 | paramsOkay = ValidAtom(stuff->selection) && ValidAtom(stuff->target); | |
276 | paramsOkay &= (stuff->property == None) || ValidAtom(stuff->property); | |
277 | if (!paramsOkay) { | |
278 | client->errorValue = stuff->property; | |
279 | return BadAtom; | |
280 | } | |
281 | ||
282 | rc = dixLookupSelection(&pSel, stuff->selection, client, DixReadAccess); | |
283 | ||
284 | memset(&event, 0, sizeof(xEvent)); | |
285 | if (rc != Success && rc != BadMatch) | |
286 | return rc; | |
287 | else if (rc == Success && pSel->window != None) { | |
288 | event.u.u.type = SelectionRequest; | |
289 | event.u.selectionRequest.owner = pSel->window; | |
290 | event.u.selectionRequest.time = stuff->time; | |
291 | event.u.selectionRequest.requestor = stuff->requestor; | |
292 | event.u.selectionRequest.selection = stuff->selection; | |
293 | event.u.selectionRequest.target = stuff->target; | |
294 | event.u.selectionRequest.property = stuff->property; | |
295 | if (pSel->client && pSel->client != serverClient && | |
296 | !pSel->client->clientGone) { | |
297 | WriteEventsToClient(pSel->client, 1, &event); | |
298 | return Success; | |
299 | } | |
300 | } | |
301 | ||
302 | event.u.u.type = SelectionNotify; | |
303 | event.u.selectionNotify.time = stuff->time; | |
304 | event.u.selectionNotify.requestor = stuff->requestor; | |
305 | event.u.selectionNotify.selection = stuff->selection; | |
306 | event.u.selectionNotify.target = stuff->target; | |
307 | event.u.selectionNotify.property = None; | |
308 | WriteEventsToClient(client, 1, &event); | |
309 | return Success; | |
310 | } |