VirtualBox

source: vbox/trunk/src/VBox/HostServices/SharedClipboard/service.cpp@ 6981

Last change on this file since 6981 was 6981, checked in by vboxsync, 17 years ago

HostServices/SharedClipboard: attempt to handle the guest reconnecting without first disconnecting more gracefully
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 23.4 KB
Line 
1/** @file
2 *
3 * Shared Clipboard:
4 * Host service entry points.
5 */
6
7/*
8 * Copyright (C) 2006-2007 innotek GmbH
9 *
10 * This file is part of VirtualBox Open Source Edition (OSE), as
11 * available from http://www.virtualbox.org. This file is free software;
12 * you can redistribute it and/or modify it under the terms of the GNU
13 * General Public License (GPL) as published by the Free Software
14 * Foundation, in version 2 as it comes in the "COPYING" file of the
15 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17 */
18
19#include <VBox/HostServices/VBoxClipboardSvc.h>
20#include <VBox/HostServices/VBoxClipboardExt.h>
21
22#include <iprt/alloc.h>
23#include <iprt/string.h>
24#include <iprt/assert.h>
25#include <iprt/critsect.h>
26#include <VBox/ssm.h>
27
28#include "VBoxClipboard.h"
29
30#define VBOX_HGCM_PARM_COUNT(a) ((sizeof (a) - sizeof (((a *)0)->hdr)) / sizeof (HGCMFunctionParameter))
31
32static void VBoxHGCMParmUInt32Set (VBOXHGCMSVCPARM *pParm, uint32_t u32)
33{
34 pParm->type = VBOX_HGCM_SVC_PARM_32BIT;
35 pParm->u.uint32 = u32;
36}
37
38static int VBoxHGCMParmUInt32Get (VBOXHGCMSVCPARM *pParm, uint32_t *pu32)
39{
40 if (pParm->type == VBOX_HGCM_SVC_PARM_32BIT)
41 {
42 *pu32 = pParm->u.uint32;
43 return VINF_SUCCESS;
44 }
45
46 return VERR_INVALID_PARAMETER;
47}
48
49#if 0
50static void VBoxHGCMParmPtrSet (VBOXHGCMSVCPARM *pParm, void *pv, uint32_t cb)
51{
52 pParm->type = VBOX_HGCM_SVC_PARM_PTR;
53 pParm->u.pointer.size = cb;
54 pParm->u.pointer.addr = pv;
55}
56#endif
57
58static int VBoxHGCMParmPtrGet (VBOXHGCMSVCPARM *pParm, void **ppv, uint32_t *pcb)
59{
60 if (pParm->type == VBOX_HGCM_SVC_PARM_PTR)
61 {
62 *ppv = pParm->u.pointer.addr;
63 *pcb = pParm->u.pointer.size;
64 return VINF_SUCCESS;
65 }
66
67 return VERR_INVALID_PARAMETER;
68}
69
70static PVBOXHGCMSVCHELPERS g_pHelpers;
71
72static RTCRITSECT critsect;
73static uint32_t g_u32Mode;
74
75static PFNHGCMSVCEXT g_pfnExtension;
76static void *g_pvExtension;
77
78static VBOXCLIPBOARDCLIENTDATA *g_pClient;
79
80static uint32_t vboxSvcClipboardMode (void)
81{
82 return g_u32Mode;
83}
84
85static void vboxSvcClipboardModeSet (uint32_t u32Mode)
86{
87 switch (u32Mode)
88 {
89 case VBOX_SHARED_CLIPBOARD_MODE_OFF:
90 case VBOX_SHARED_CLIPBOARD_MODE_HOST_TO_GUEST:
91 case VBOX_SHARED_CLIPBOARD_MODE_GUEST_TO_HOST:
92 case VBOX_SHARED_CLIPBOARD_MODE_BIDIRECTIONAL:
93 g_u32Mode = u32Mode;
94 break;
95
96 default:
97 g_u32Mode = VBOX_SHARED_CLIPBOARD_MODE_OFF;
98 }
99}
100
101bool vboxSvcClipboardLock (void)
102{
103 return VBOX_SUCCESS(RTCritSectEnter (&critsect));
104}
105
106void vboxSvcClipboardUnlock (void)
107{
108 RTCritSectLeave (&critsect);
109}
110
111/* Set the HGCM parameters according to pending messages.
112 * Executed under the clipboard lock.
113 */
114static bool vboxSvcClipboardReturnMsg (VBOXCLIPBOARDCLIENTDATA *pClient, VBOXHGCMSVCPARM paParms[])
115{
116 /* Message priority is taken into account. */
117 if (pClient->fMsgQuit)
118 {
119 LogFlow(("vboxSvcClipboardReturnMsg: Quit\n"));
120 VBoxHGCMParmUInt32Set (&paParms[0], VBOX_SHARED_CLIPBOARD_HOST_MSG_QUIT);
121 VBoxHGCMParmUInt32Set (&paParms[1], 0);
122 pClient->fMsgQuit = false;
123 }
124 else if (pClient->fMsgReadData)
125 {
126 LogFlow(("vboxSvcClipboardReturnMsg: ReadData %02X\n", pClient->u32RequestedFormat));
127 VBoxHGCMParmUInt32Set (&paParms[0], VBOX_SHARED_CLIPBOARD_HOST_MSG_READ_DATA);
128 VBoxHGCMParmUInt32Set (&paParms[1], pClient->u32RequestedFormat);
129 pClient->fMsgReadData = false;
130 }
131 else if (pClient->fMsgFormats)
132 {
133 LogFlow(("vboxSvcClipboardReturnMsg: Formats %02X\n", pClient->u32AvailableFormats));
134 VBoxHGCMParmUInt32Set (&paParms[0], VBOX_SHARED_CLIPBOARD_HOST_MSG_FORMATS);
135 VBoxHGCMParmUInt32Set (&paParms[1], pClient->u32AvailableFormats);
136 pClient->fMsgFormats = false;
137 }
138 else
139 {
140 /* No pending messages. */
141 LogFlow(("vboxSvcClipboardReturnMsg: no message\n"));
142 return false;
143 }
144
145 /* Message information assigned. */
146 return true;
147}
148
149void vboxSvcClipboardReportMsg (VBOXCLIPBOARDCLIENTDATA *pClient, uint32_t u32Msg, uint32_t u32Formats)
150{
151 if (vboxSvcClipboardLock ())
152 {
153 switch (u32Msg)
154 {
155 case VBOX_SHARED_CLIPBOARD_HOST_MSG_QUIT:
156 {
157 LogFlow(("vboxSvcClipboardReportMsg: Quit\n"));
158 pClient->fMsgQuit = true;
159 } break;
160 case VBOX_SHARED_CLIPBOARD_HOST_MSG_READ_DATA:
161 {
162 if ( vboxSvcClipboardMode () != VBOX_SHARED_CLIPBOARD_MODE_GUEST_TO_HOST
163 && vboxSvcClipboardMode () != VBOX_SHARED_CLIPBOARD_MODE_BIDIRECTIONAL)
164 {
165 /* Skip the message. */
166 break;
167 }
168
169 LogFlow(("vboxSvcClipboardReportMsg: ReadData %02X\n", u32Formats));
170 pClient->u32RequestedFormat = u32Formats;
171 pClient->fMsgReadData = true;
172 } break;
173 case VBOX_SHARED_CLIPBOARD_HOST_MSG_FORMATS:
174 {
175 if ( vboxSvcClipboardMode () != VBOX_SHARED_CLIPBOARD_MODE_HOST_TO_GUEST
176 && vboxSvcClipboardMode () != VBOX_SHARED_CLIPBOARD_MODE_BIDIRECTIONAL)
177 {
178 /* Skip the message. */
179 break;
180 }
181
182 LogFlow(("vboxSvcClipboardReportMsg: Formats %02X\n", u32Formats));
183 pClient->u32AvailableFormats = u32Formats;
184 pClient->fMsgFormats = true;
185 } break;
186 default:
187 {
188 /* Invalid message. */
189 LogFlow(("vboxSvcClipboardReportMsg: invalid message %d\n", u32Msg));
190 } break;
191 }
192
193 if (pClient->fAsync)
194 {
195 /* The client waits for a responce. */
196 bool fMessageReturned = vboxSvcClipboardReturnMsg (pClient, pClient->async.paParms);
197
198 /* Make a copy of the handle. */
199 VBOXHGCMCALLHANDLE callHandle = pClient->async.callHandle;
200
201 if (fMessageReturned)
202 {
203 /* There is a responce. */
204 pClient->fAsync = false;
205 }
206
207 vboxSvcClipboardUnlock ();
208
209 if (fMessageReturned)
210 {
211 LogFlow(("vboxSvcClipboardReportMsg: CallComplete\n"));
212 g_pHelpers->pfnCallComplete (callHandle, VINF_SUCCESS);
213 }
214 }
215 else
216 {
217 vboxSvcClipboardUnlock ();
218 }
219 }
220}
221
222static int svcInit (void)
223{
224 RTCritSectInit (&critsect);
225 vboxSvcClipboardModeSet (VBOX_SHARED_CLIPBOARD_MODE_OFF);
226 return vboxClipboardInit ();
227}
228
229static DECLCALLBACK(int) svcUnload (void)
230{
231 vboxClipboardDestroy ();
232 RTCritSectDelete (&critsect);
233 return VINF_SUCCESS;
234}
235
236/**
237 * Disconnect the host side of the shared clipboard and send a "host disconnected" message
238 * to the guest side.
239 */
240static DECLCALLBACK(int) svcDisconnect (uint32_t u32ClientID, void *pvClient)
241{
242 VBOXCLIPBOARDCLIENTDATA *pClient = (VBOXCLIPBOARDCLIENTDATA *)pvClient;
243
244 vboxSvcClipboardReportMsg (pClient, VBOX_SHARED_CLIPBOARD_HOST_MSG_QUIT, 0);
245
246 vboxClipboardDisconnect (pClient);
247
248 memset (pClient, 0, sizeof (*pClient));
249
250 g_pClient = NULL;
251
252 return VINF_SUCCESS;
253}
254
255static DECLCALLBACK(int) svcConnect (uint32_t u32ClientID, void *pvClient)
256{
257 VBOXCLIPBOARDCLIENTDATA *pClient = (VBOXCLIPBOARDCLIENTDATA *)pvClient;
258
259 int rc = VINF_SUCCESS;
260
261 /* If there is already a client connected then we want to release it first. */
262 if (g_pClient != NULL)
263 {
264 uint32_t u32ClientID = g_pClient->u32ClientID;
265
266 svcDisconnect(u32ClientID, g_pClient);
267 /* And free the resources in the hgcm subsystem. */
268 g_pHelpers->pfnDisconnectClient(g_pHelpers->pvInstance, u32ClientID);
269 }
270
271 /* Register the client. */
272 memset (pClient, 0, sizeof (*pClient));
273
274 pClient->u32ClientID = u32ClientID;
275
276 rc = vboxClipboardConnect (pClient);
277
278 if (VBOX_SUCCESS (rc))
279 {
280 g_pClient = pClient;
281 }
282
283 Log(("vboxClipboardConnect: rc = %Vrc\n", rc));
284
285 return rc;
286}
287
288static DECLCALLBACK(void) svcCall (VBOXHGCMCALLHANDLE callHandle,
289 uint32_t u32ClientID,
290 void *pvClient,
291 uint32_t u32Function,
292 uint32_t cParms,
293 VBOXHGCMSVCPARM paParms[])
294{
295 int rc = VINF_SUCCESS;
296
297 Log(("svcCall: u32ClientID = %d, fn = %d, cParms = %d, pparms = %d\n",
298 u32ClientID, u32Function, cParms, paParms));
299
300 VBOXCLIPBOARDCLIENTDATA *pClient = (VBOXCLIPBOARDCLIENTDATA *)pvClient;
301
302 bool fAsynchronousProcessing = false;
303
304#ifdef DEBUG
305 uint32_t i;
306
307 for (i = 0; i < cParms; i++)
308 {
309 /** @todo parameters other than 32 bit */
310 Log((" pparms[%d]: type %d value %d\n", i, paParms[i].type, paParms[i].u.uint32));
311 }
312#endif
313
314 switch (u32Function)
315 {
316 case VBOX_SHARED_CLIPBOARD_FN_GET_HOST_MSG:
317 {
318 /* The quest requests a host message. */
319 Log(("svcCall: VBOX_SHARED_CLIPBOARD_FN_GET_HOST_MSG\n"));
320
321 if (cParms != VBOX_HGCM_PARM_COUNT (VBoxClipboardGetHostMsg))
322 {
323 rc = VERR_INVALID_PARAMETER;
324 }
325 else if ( paParms[0].type != VBOX_HGCM_SVC_PARM_32BIT /* msg */
326 || paParms[1].type != VBOX_HGCM_SVC_PARM_32BIT /* formats */
327 )
328 {
329 rc = VERR_INVALID_PARAMETER;
330 }
331 else
332 {
333 /* Atomically verify the client's state. */
334 if (vboxSvcClipboardLock ())
335 {
336 bool fMessageReturned = vboxSvcClipboardReturnMsg (pClient, paParms);
337
338 if (fMessageReturned)
339 {
340 /* Just return to the caller. */
341 pClient->fAsync = false;
342 }
343 else
344 {
345 /* No event available at the time. Process asynchronously. */
346 fAsynchronousProcessing = true;
347
348 pClient->fAsync = true;
349 pClient->async.callHandle = callHandle;
350 pClient->async.paParms = paParms;
351
352 Log(("svcCall: async.\n"));
353 }
354
355 vboxSvcClipboardUnlock ();
356 }
357 else
358 {
359 rc = VERR_NOT_SUPPORTED;
360 }
361 }
362 } break;
363
364 case VBOX_SHARED_CLIPBOARD_FN_FORMATS:
365 {
366 /* The guest reports that some formats are available. */
367 Log(("svcCall: VBOX_SHARED_CLIPBOARD_FN_FORMATS\n"));
368
369 if (cParms != VBOX_HGCM_PARM_COUNT (VBoxClipboardFormats))
370 {
371 rc = VERR_INVALID_PARAMETER;
372 }
373 else if ( paParms[0].type != VBOX_HGCM_SVC_PARM_32BIT /* formats */
374 )
375 {
376 rc = VERR_INVALID_PARAMETER;
377 }
378 else
379 {
380 uint32_t u32Formats;
381
382 rc = VBoxHGCMParmUInt32Get (&paParms[0], &u32Formats);
383
384 if (VBOX_SUCCESS (rc))
385 {
386 if ( vboxSvcClipboardMode () != VBOX_SHARED_CLIPBOARD_MODE_GUEST_TO_HOST
387 && vboxSvcClipboardMode () != VBOX_SHARED_CLIPBOARD_MODE_BIDIRECTIONAL)
388 {
389 rc = VERR_NOT_SUPPORTED;
390 break;
391 }
392
393 if (g_pfnExtension)
394 {
395 VBOXCLIPBOARDEXTPARMS parms;
396
397 parms.u32Format = u32Formats;
398
399 g_pfnExtension (g_pvExtension, VBOX_CLIPBOARD_EXT_FN_FORMAT_ANNOUNCE, &parms, sizeof (parms));
400 }
401 else
402 {
403 vboxClipboardFormatAnnounce (pClient, u32Formats);
404 }
405 }
406 }
407 } break;
408
409 case VBOX_SHARED_CLIPBOARD_FN_READ_DATA:
410 {
411 /* The guest wants to read data in the given format. */
412 Log(("svcCall: VBOX_SHARED_CLIPBOARD_FN_READ_DATA\n"));
413
414 if (cParms != VBOX_HGCM_PARM_COUNT (VBoxClipboardReadData))
415 {
416 rc = VERR_INVALID_PARAMETER;
417 }
418 else if ( paParms[0].type != VBOX_HGCM_SVC_PARM_32BIT /* format */
419 || paParms[1].type != VBOX_HGCM_SVC_PARM_PTR /* ptr */
420 || paParms[2].type != VBOX_HGCM_SVC_PARM_32BIT /* size */
421 )
422 {
423 rc = VERR_INVALID_PARAMETER;
424 }
425 else
426 {
427 uint32_t u32Format;
428 void *pv;
429 uint32_t cb;
430
431 rc = VBoxHGCMParmUInt32Get (&paParms[0], &u32Format);
432
433 if (VBOX_SUCCESS (rc))
434 {
435 rc = VBoxHGCMParmPtrGet (&paParms[1], &pv, &cb);
436
437 if (VBOX_SUCCESS (rc))
438 {
439 if ( vboxSvcClipboardMode () != VBOX_SHARED_CLIPBOARD_MODE_HOST_TO_GUEST
440 && vboxSvcClipboardMode () != VBOX_SHARED_CLIPBOARD_MODE_BIDIRECTIONAL)
441 {
442 rc = VERR_NOT_SUPPORTED;
443 break;
444 }
445
446 uint32_t cbActual = 0;
447
448 if (g_pfnExtension)
449 {
450 VBOXCLIPBOARDEXTPARMS parms;
451
452 parms.u32Format = u32Format;
453 parms.pvData = pv;
454 parms.cbData = cb;
455
456 rc = g_pfnExtension (g_pvExtension, VBOX_CLIPBOARD_EXT_FN_DATA_READ, &parms, sizeof (parms));
457
458 if (VBOX_SUCCESS (rc))
459 {
460 cbActual = parms.cbData;
461 }
462 }
463 else
464 {
465 rc = vboxClipboardReadData (pClient, u32Format, pv, cb, &cbActual);
466 }
467
468 if (VBOX_SUCCESS (rc))
469 {
470 VBoxHGCMParmUInt32Set (&paParms[2], cbActual);
471 }
472 }
473 }
474 }
475 } break;
476
477 case VBOX_SHARED_CLIPBOARD_FN_WRITE_DATA:
478 {
479 /* The guest writes the requested data. */
480 Log(("svcCall: VBOX_SHARED_CLIPBOARD_FN_WRITE_DATA\n"));
481
482 if (cParms != VBOX_HGCM_PARM_COUNT (VBoxClipboardWriteData))
483 {
484 rc = VERR_INVALID_PARAMETER;
485 }
486 else if ( paParms[0].type != VBOX_HGCM_SVC_PARM_32BIT /* format */
487 || paParms[1].type != VBOX_HGCM_SVC_PARM_PTR /* ptr */
488 )
489 {
490 rc = VERR_INVALID_PARAMETER;
491 }
492 else
493 {
494 void *pv;
495 uint32_t cb;
496 uint32_t u32Format;
497
498 rc = VBoxHGCMParmUInt32Get (&paParms[0], &u32Format);
499
500 if (VBOX_SUCCESS (rc))
501 {
502 rc = VBoxHGCMParmPtrGet (&paParms[1], &pv, &cb);
503
504 if (VBOX_SUCCESS (rc))
505 {
506 if ( vboxSvcClipboardMode () != VBOX_SHARED_CLIPBOARD_MODE_GUEST_TO_HOST
507 && vboxSvcClipboardMode () != VBOX_SHARED_CLIPBOARD_MODE_BIDIRECTIONAL)
508 {
509 rc = VERR_NOT_SUPPORTED;
510 break;
511 }
512
513 if (g_pfnExtension)
514 {
515 VBOXCLIPBOARDEXTPARMS parms;
516
517 parms.u32Format = u32Format;
518 parms.pvData = pv;
519 parms.cbData = cb;
520
521 g_pfnExtension (g_pvExtension, VBOX_CLIPBOARD_EXT_FN_DATA_WRITE, &parms, sizeof (parms));
522 }
523 else
524 {
525 vboxClipboardWriteData (pClient, pv, cb, u32Format);
526 }
527 }
528 }
529 }
530 } break;
531
532 default:
533 {
534 rc = VERR_NOT_IMPLEMENTED;
535 }
536 }
537
538 LogFlow(("svcCall: rc = %Vrc\n", rc));
539
540 if (!fAsynchronousProcessing)
541 {
542 g_pHelpers->pfnCallComplete (callHandle, rc);
543 }
544}
545
546/*
547 * We differentiate between a function handler for the guest and one for the host.
548 */
549static DECLCALLBACK(int) svcHostCall (uint32_t u32Function,
550 uint32_t cParms,
551 VBOXHGCMSVCPARM paParms[])
552{
553 int rc = VINF_SUCCESS;
554
555 Log(("svcHostCall: fn = %d, cParms = %d, pparms = %d\n",
556 u32Function, cParms, paParms));
557
558 switch (u32Function)
559 {
560 case VBOX_SHARED_CLIPBOARD_HOST_FN_SET_MODE:
561 {
562 Log(("svcCall: VBOX_SHARED_CLIPBOARD_HOST_FN_SET_MODE\n"));
563
564 if (cParms != 1)
565 {
566 rc = VERR_INVALID_PARAMETER;
567 }
568 else if ( paParms[0].type != VBOX_HGCM_SVC_PARM_32BIT /* mode */
569 )
570 {
571 rc = VERR_INVALID_PARAMETER;
572 }
573 else
574 {
575 uint32_t u32Mode = VBOX_SHARED_CLIPBOARD_MODE_OFF;
576
577 rc = VBoxHGCMParmUInt32Get (&paParms[0], &u32Mode);
578
579 /* The setter takes care of invalid values. */
580 vboxSvcClipboardModeSet (u32Mode);
581 }
582 } break;
583
584 default:
585 break;
586 }
587
588 LogFlow(("svcHostCall: rc = %Vrc\n", rc));
589 return rc;
590}
591
592static DECLCALLBACK(int) svcSaveState(uint32_t u32ClientID, void *pvClient, PSSMHANDLE pSSM)
593{
594 /* If there are any pending requests, they must be completed here. Since
595 * the service is single threaded, there could be only requests
596 * which the service itself has postponed.
597 *
598 * HGCM knows that the state is being saved and that the pfnComplete
599 * calls are just clean ups. These requests are saved by the VMMDev.
600 *
601 * When the state will be restored, these requests will be reissued
602 * by VMMDev. The service therefore must save state as if there were no
603 * pending request.
604 */
605 Log(("svcSaveState: u32ClientID = %d\n", u32ClientID));
606
607 VBOXCLIPBOARDCLIENTDATA *pClient = (VBOXCLIPBOARDCLIENTDATA *)pvClient;
608
609 /* Save client structure length & contents */
610 int rc = SSMR3PutU32(pSSM, sizeof(*pClient));
611 AssertRCReturn(rc, rc);
612
613 rc = SSMR3PutMem(pSSM, pClient, sizeof(*pClient));
614 AssertRCReturn(rc, rc);
615
616 if (pClient->fAsync)
617 {
618 g_pHelpers->pfnCallComplete (pClient->async.callHandle, VINF_SUCCESS /* error code is not important here. */);
619 pClient->fAsync = false;
620 }
621
622 return VINF_SUCCESS;
623}
624
625static DECLCALLBACK(int) svcLoadState(uint32_t u32ClientID, void *pvClient, PSSMHANDLE pSSM)
626{
627 Log(("svcLoadState: u32ClientID = %d\n", u32ClientID));
628
629 VBOXCLIPBOARDCLIENTDATA *pClient = (VBOXCLIPBOARDCLIENTDATA *)pvClient;
630
631 /* Existing client can not be in async state yet. */
632 Assert(!pClient->fAsync);
633
634 /* Restore the client data. */
635 uint32_t len;
636 int rc = SSMR3GetU32(pSSM, &len);
637 AssertRCReturn(rc, rc);
638
639 if (len != sizeof(VBOXCLIPBOARDCLIENTDATA))
640 {
641 Log(("Client len mismatch: %d %d\n", len, sizeof (VBOXCLIPBOARDCLIENTDATA)));
642 return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
643 }
644
645 VBOXCLIPBOARDCLIENTDATA client;
646 rc = SSMR3GetMem(pSSM, &client, sizeof(client));
647 AssertRCReturn(rc, rc);
648
649 /* Verify the loaded clients data and update the pClient. */
650 if (pClient->u32ClientID != client.u32ClientID)
651 {
652 Log(("Client ID mismatch: %d %d\n", pClient->u32ClientID, client.u32ClientID));
653 return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
654 }
655
656 pClient->fMsgQuit = client.fMsgQuit;
657 pClient->fMsgReadData = client.fMsgReadData;
658 pClient->fMsgFormats = client.fMsgFormats;
659 pClient->u32RequestedFormat = client.u32RequestedFormat;
660
661 /* Actual host data are to be reported to guest (SYNC). */
662 vboxClipboardSync (pClient);
663
664 return VINF_SUCCESS;
665}
666
667static DECLCALLBACK(int) extCallback (uint32_t u32Function, uint32_t u32Format, void *pvData, uint32_t cbData)
668{
669 if (g_pClient != NULL)
670 {
671 switch (u32Function)
672 {
673 case VBOX_CLIPBOARD_EXT_FN_FORMAT_ANNOUNCE:
674 {
675 vboxSvcClipboardReportMsg (g_pClient, VBOX_SHARED_CLIPBOARD_HOST_MSG_FORMATS, u32Format);
676 } break;
677
678 case VBOX_CLIPBOARD_EXT_FN_DATA_READ:
679 {
680 vboxSvcClipboardReportMsg (g_pClient, VBOX_SHARED_CLIPBOARD_HOST_MSG_READ_DATA, u32Format);
681 } break;
682
683 default:
684 return VERR_NOT_SUPPORTED;
685 }
686 }
687
688 return VINF_SUCCESS;
689}
690
691static DECLCALLBACK(int) svcRegisterExtension(PFNHGCMSVCEXT pfnExtension, void *pvExtension)
692{
693 LogFlowFunc(("pfnExtension = %p\n", pfnExtension));
694
695 VBOXCLIPBOARDEXTPARMS parms;
696
697 if (pfnExtension)
698 {
699 /* Install extension. */
700 g_pfnExtension = pfnExtension;
701 g_pvExtension = pvExtension;
702
703 parms.pvData = (void *)extCallback;
704 g_pfnExtension (g_pvExtension, VBOX_CLIPBOARD_EXT_FN_SET_CALLBACK, &parms, sizeof (parms));
705 }
706 else
707 {
708 if (g_pfnExtension)
709 {
710 parms.pvData = NULL;
711 g_pfnExtension (g_pvExtension, VBOX_CLIPBOARD_EXT_FN_SET_CALLBACK, &parms, sizeof (parms));
712 }
713
714 /* Uninstall extension. */
715 g_pfnExtension = NULL;
716 g_pvExtension = NULL;
717 }
718
719 return VINF_SUCCESS;
720}
721
722extern "C" DECLCALLBACK(DECLEXPORT(int)) VBoxHGCMSvcLoad (VBOXHGCMSVCFNTABLE *ptable)
723{
724 int rc = VINF_SUCCESS;
725
726 LogFlowFunc(("ptable = %p\n", ptable));
727
728 if (!ptable)
729 {
730 rc = VERR_INVALID_PARAMETER;
731 }
732 else
733 {
734 Log(("VBoxHGCMSvcLoad: ptable->cbSize = %d, ptable->u32Version = 0x%08X\n", ptable->cbSize, ptable->u32Version));
735
736 if ( ptable->cbSize != sizeof (VBOXHGCMSVCFNTABLE)
737 || ptable->u32Version != VBOX_HGCM_SVC_VERSION)
738 {
739 rc = VERR_INVALID_PARAMETER;
740 }
741 else
742 {
743 g_pHelpers = ptable->pHelpers;
744
745 ptable->cbClient = sizeof (VBOXCLIPBOARDCLIENTDATA);
746
747 ptable->pfnUnload = svcUnload;
748 ptable->pfnConnect = svcConnect;
749 ptable->pfnDisconnect = svcDisconnect;
750 ptable->pfnCall = svcCall;
751 ptable->pfnHostCall = svcHostCall;
752 ptable->pfnSaveState = svcSaveState;
753 ptable->pfnLoadState = svcLoadState;
754 ptable->pfnRegisterExtension = svcRegisterExtension;
755
756 /* Service specific initialization. */
757 rc = svcInit ();
758 }
759 }
760
761 return rc;
762}
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