VirtualBox

source: vbox/trunk/src/VBox/GuestHost/SharedClipboard/clipboard-transfers.cpp@ 100660

Last change on this file since 100660 was 100660, checked in by vboxsync, 20 months ago

Shared Clipboard: Added ShClTransferStop() for stopping an already started transfer (thread). bugref:9437
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1/* $Id: clipboard-transfers.cpp 100660 2023-07-20 09:55:41Z vboxsync $ */
2/** @file
3 * Shared Clipboard: Common clipboard transfer handling code.
4 */
5
6/*
7 * Copyright (C) 2019-2023 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * SPDX-License-Identifier: GPL-3.0-only
26 */
27
28#define LOG_GROUP LOG_GROUP_SHARED_CLIPBOARD
29#include <VBox/log.h>
30
31#include <iprt/dir.h>
32#include <iprt/file.h>
33#include <iprt/list.h>
34#include <iprt/path.h>
35#include <iprt/rand.h>
36#include <iprt/semaphore.h>
37#include <iprt/uri.h>
38#include <iprt/utf16.h>
39
40#include <VBox/err.h>
41#include <VBox/HostServices/VBoxClipboardSvc.h>
42#include <VBox/GuestHost/clipboard-helper.h>
43#include <VBox/GuestHost/SharedClipboard-transfers.h>
44
45
46
47/*********************************************************************************************************************************
48 * Prototypes *
49 ********************************************************************************************************************************/
50
51static void shClTransferCopyCallbacks(PSHCLTRANSFERCALLBACKS pCallbacksDst, PSHCLTRANSFERCALLBACKS pCallbacksSrc);
52DECLINLINE(void) shClTransferLock(PSHCLTRANSFER pTransfer);
53DECLINLINE(void) shClTransferUnlock(PSHCLTRANSFER pTransfer);
54static void shClTransferSetCallbacks(PSHCLTRANSFER pTransfer, PSHCLTRANSFERCALLBACKS pCallbacks);
55static int shClTransferSetStatus(PSHCLTRANSFER pTransfer, SHCLTRANSFERSTATUS enmStatus);
56static int shClTransferThreadCreate(PSHCLTRANSFER pTransfer, PFNSHCLTRANSFERTHREAD pfnThreadFunc, void *pvUser);
57static int shClTransferThreadDestroy(PSHCLTRANSFER pTransfer, RTMSINTERVAL uTimeoutMs);
58
59static void shclTransferCtxTransferRemoveAndUnregister(PSHCLTRANSFERCTX pTransferCtx, PSHCLTRANSFER pTransfer);
60static PSHCLTRANSFER shClTransferCtxGetTransferByIdInternal(PSHCLTRANSFERCTX pTransferCtx, SHCLTRANSFERID uId);
61static PSHCLTRANSFER shClTransferCtxGetTransferByIndexInternal(PSHCLTRANSFERCTX pTransferCtx, uint32_t uIdx);
62
63
64/*********************************************************************************************************************************
65 * Transfer List *
66 ********************************************************************************************************************************/
67
68/**
69 * Initializes a transfer list.
70 *
71 * @param pList Transfer list to initialize.
72 */
73void ShClTransferListInit(PSHCLLIST pList)
74{
75 RT_ZERO(pList->Hdr);
76 RTListInit(&pList->lstEntries);
77}
78
79/**
80 * Destroys a transfer list.
81 *
82 * @param pList Transfer list to destroy.
83 */
84void ShClTransferListDestroy(PSHCLLIST pList)
85{
86 if (!pList)
87 return;
88
89 PSHCLLISTENTRY pEntry, pEntryNext;
90 RTListForEachSafe(&pList->lstEntries, pEntry, pEntryNext, SHCLLISTENTRY, Node)
91 {
92 RTListNodeRemove(&pEntry->Node);
93 ShClTransferListEntryDestroy(pEntry);
94 RTMemFree(pEntry);
95 }
96
97 RT_ZERO(pList->Hdr);
98}
99
100/**
101 * Adds a list entry to a transfer list.
102 *
103 * @returns VBox status code.
104 * @param pList Transfer list to add entry to.
105 * @param pEntry Entry to add.
106 * @param fAppend \c true to append to a list, or \c false to prepend.
107 */
108int ShClTransferListAddEntry(PSHCLLIST pList, PSHCLLISTENTRY pEntry, bool fAppend)
109{
110 AssertReturn(ShClTransferListEntryIsValid(pEntry), VERR_INVALID_PARAMETER);
111
112 if (fAppend)
113 RTListAppend(&pList->lstEntries, &pEntry->Node);
114 else
115 RTListPrepend(&pList->lstEntries, &pEntry->Node);
116 pList->Hdr.cEntries++;
117
118 LogFlowFunc(("%p: '%s' (%RU32 bytes) + %RU32 bytes info -> now %RU32 entries\n",
119 pList, pEntry->pszName, pEntry->cbName, pEntry->cbInfo, pList->Hdr.cEntries));
120
121 return VINF_SUCCESS;
122}
123
124/**
125 * Allocates a new transfer list.
126 *
127 * @returns Allocated transfer list on success, or NULL on failure.
128 */
129PSHCLLIST ShClTransferListAlloc(void)
130{
131 PSHCLLIST pList = (PSHCLLIST)RTMemAllocZ(sizeof(SHCLLIST));
132 if (pList)
133 {
134 ShClTransferListInit(pList);
135 return pList;
136 }
137
138 return NULL;
139}
140
141/**
142 * Frees a transfer list.
143 *
144 * @param pList Transfer list to free. The pointer will be
145 * invalid after returning from this function.
146 */
147void ShClTransferListFree(PSHCLLIST pList)
148{
149 if (!pList)
150 return;
151
152 ShClTransferListDestroy(pList);
153
154 RTMemFree(pList);
155 pList = NULL;
156}
157
158/**
159 * Returns a specific list entry of a transfer list.
160 *
161 * @returns Pointer to list entry if found, or NULL if not found.
162 * @param pList Clipboard transfer list to get list entry from.
163 * @param uIdx Index of list entry to return.
164 */
165DECLINLINE(PSHCLLISTENTRY) shClTransferListGetEntryById(PSHCLLIST pList, uint32_t uIdx)
166{
167 if (uIdx >= pList->Hdr.cEntries)
168 return NULL;
169
170 Assert(!RTListIsEmpty(&pList->lstEntries));
171
172 PSHCLLISTENTRY pIt = RTListGetFirst(&pList->lstEntries, SHCLLISTENTRY, Node);
173 while (uIdx) /** @todo Slow, but works for now. */
174 {
175 pIt = RTListGetNext(&pList->lstEntries, pIt, SHCLLISTENTRY, Node);
176 uIdx--;
177 }
178
179 return pIt;
180}
181
182/**
183 * Initializes an list handle info structure.
184 *
185 * @returns VBox status code.
186 * @param pInfo List handle info structure to initialize.
187 */
188int ShClTransferListHandleInfoInit(PSHCLLISTHANDLEINFO pInfo)
189{
190 AssertPtrReturn(pInfo, VERR_INVALID_POINTER);
191
192 pInfo->hList = NIL_SHCLLISTHANDLE;
193 pInfo->enmType = SHCLOBJTYPE_INVALID;
194
195 pInfo->pszPathLocalAbs = NULL;
196
197 RT_ZERO(pInfo->u);
198
199 return VINF_SUCCESS;
200}
201
202/**
203 * Destroys a list handle info structure.
204 *
205 * @param pInfo List handle info structure to destroy.
206 */
207void ShClTransferListHandleInfoDestroy(PSHCLLISTHANDLEINFO pInfo)
208{
209 if (!pInfo)
210 return;
211
212 if (pInfo->pszPathLocalAbs)
213 {
214 RTStrFree(pInfo->pszPathLocalAbs);
215 pInfo->pszPathLocalAbs = NULL;
216 }
217}
218
219/**
220 * Allocates a transfer list header structure.
221 *
222 * @returns VBox status code.
223 * @param ppListHdr Where to store the allocated transfer list header structure on success.
224 */
225int ShClTransferListHdrAlloc(PSHCLLISTHDR *ppListHdr)
226{
227 int rc;
228
229 PSHCLLISTHDR pListHdr = (PSHCLLISTHDR)RTMemAllocZ(sizeof(SHCLLISTHDR));
230 if (pListHdr)
231 {
232 *ppListHdr = pListHdr;
233 rc = VINF_SUCCESS;
234 }
235 else
236 rc = VERR_NO_MEMORY;
237
238 LogFlowFuncLeaveRC(rc);
239 return rc;
240}
241
242/**
243 * Frees a transfer list header structure.
244 *
245 * @param pListEntry Transfer list header structure to free.
246 * The pointer will be invalid on return.
247 */
248void ShClTransferListHdrFree(PSHCLLISTHDR pListHdr)
249{
250 if (!pListHdr)
251 return;
252
253 LogFlowFuncEnter();
254
255 ShClTransferListHdrDestroy(pListHdr);
256
257 RTMemFree(pListHdr);
258 pListHdr = NULL;
259}
260
261/**
262 * Duplicates (allocates) a transfer list header structure.
263 *
264 * @returns Duplicated transfer list header structure on success.
265 * @param pListHdr Transfer list header to duplicate.
266 */
267PSHCLLISTHDR ShClTransferListHdrDup(PSHCLLISTHDR pListHdr)
268{
269 AssertPtrReturn(pListHdr, NULL);
270
271 PSHCLLISTHDR pListHdrDup = (PSHCLLISTHDR)RTMemAlloc(sizeof(SHCLLISTHDR));
272 if (pListHdrDup)
273 *pListHdrDup = *pListHdr;
274
275 return pListHdrDup;
276}
277
278/**
279 * Initializes a transfer list header structure.
280 *
281 * @returns VBox status code.
282 * @param pListHdr Transfer list header struct to initialize.
283 */
284int ShClTransferListHdrInit(PSHCLLISTHDR pListHdr)
285{
286 AssertPtrReturn(pListHdr, VERR_INVALID_POINTER);
287
288 LogFlowFuncEnter();
289
290 ShClTransferListHdrReset(pListHdr);
291
292 return VINF_SUCCESS;
293}
294
295/**
296 * Destroys a transfer list header structure.
297 *
298 * @param pListHdr Transfer list header struct to destroy.
299 */
300void ShClTransferListHdrDestroy(PSHCLLISTHDR pListHdr)
301{
302 if (!pListHdr)
303 return;
304
305 LogFlowFuncEnter();
306}
307
308/**
309 * Resets a transfer list header structure.
310 *
311 * @returns VBox status code.
312 * @param pListHdr Transfer list header struct to reset.
313 */
314void ShClTransferListHdrReset(PSHCLLISTHDR pListHdr)
315{
316 AssertPtrReturnVoid(pListHdr);
317
318 LogFlowFuncEnter();
319
320 RT_BZERO(pListHdr, sizeof(SHCLLISTHDR));
321}
322
323/**
324 * Returns whether a given transfer list header is valid or not.
325 *
326 * @returns \c true if valid, \c false if not.
327 * @param pListHdr Transfer list header to validate.
328 */
329bool ShClTransferListHdrIsValid(PSHCLLISTHDR pListHdr)
330{
331 RT_NOREF(pListHdr);
332 return true; /** @todo Implement this. */
333}
334
335/**
336 * (Deep-)Copies a transfer list open parameters structure from one into another.
337 *
338 * @returns VBox status code.
339 * @param pDst Destination parameters to copy to.
340 * @param pSrc Source parameters to copy from.
341 */
342int ShClTransferListOpenParmsCopy(PSHCLLISTOPENPARMS pDst, PSHCLLISTOPENPARMS pSrc)
343{
344 AssertPtrReturn(pDst, VERR_INVALID_POINTER);
345 AssertPtrReturn(pSrc, VERR_INVALID_POINTER);
346
347 int rc = VINF_SUCCESS;
348
349 if (pSrc->pszFilter)
350 {
351 pDst->pszFilter = RTStrDup(pSrc->pszFilter);
352 if (!pDst->pszFilter)
353 rc = VERR_NO_MEMORY;
354 }
355
356 if ( RT_SUCCESS(rc)
357 && pSrc->pszPath)
358 {
359 pDst->pszPath = RTStrDup(pSrc->pszPath);
360 if (!pDst->pszPath)
361 rc = VERR_NO_MEMORY;
362 }
363
364 if (RT_SUCCESS(rc))
365 {
366 pDst->fList = pDst->fList;
367 pDst->cbFilter = pSrc->cbFilter;
368 pDst->cbPath = pSrc->cbPath;
369 }
370
371 return rc;
372}
373
374/**
375 * Duplicates a transfer list open parameters structure.
376 *
377 * @returns Duplicated transfer list open parameters structure on success, or NULL on failure.
378 * @param pParms Transfer list open parameters structure to duplicate.
379 */
380PSHCLLISTOPENPARMS ShClTransferListOpenParmsDup(PSHCLLISTOPENPARMS pParms)
381{
382 AssertPtrReturn(pParms, NULL);
383
384 PSHCLLISTOPENPARMS pParmsDup = (PSHCLLISTOPENPARMS)RTMemAllocZ(sizeof(SHCLLISTOPENPARMS));
385 if (!pParmsDup)
386 return NULL;
387
388 int rc = ShClTransferListOpenParmsCopy(pParmsDup, pParms);
389 if (RT_FAILURE(rc))
390 {
391 ShClTransferListOpenParmsDestroy(pParmsDup);
392
393 RTMemFree(pParmsDup);
394 pParmsDup = NULL;
395 }
396
397 return pParmsDup;
398}
399
400/**
401 * Initializes a transfer list open parameters structure.
402 *
403 * @returns VBox status code.
404 * @param pParms Transfer list open parameters structure to initialize.
405 */
406int ShClTransferListOpenParmsInit(PSHCLLISTOPENPARMS pParms)
407{
408 AssertPtrReturn(pParms, VERR_INVALID_POINTER);
409
410 RT_BZERO(pParms, sizeof(SHCLLISTOPENPARMS));
411
412 pParms->cbFilter = SHCL_TRANSFER_PATH_MAX; /** @todo Make this dynamic. */
413 pParms->pszFilter = RTStrAlloc(pParms->cbFilter);
414
415 pParms->cbPath = SHCL_TRANSFER_PATH_MAX; /** @todo Make this dynamic. */
416 pParms->pszPath = RTStrAlloc(pParms->cbPath);
417
418 LogFlowFuncLeave();
419 return VINF_SUCCESS;
420}
421
422/**
423 * Destroys a transfer list open parameters structure.
424 *
425 * @param pParms Transfer list open parameters structure to destroy.
426 */
427void ShClTransferListOpenParmsDestroy(PSHCLLISTOPENPARMS pParms)
428{
429 if (!pParms)
430 return;
431
432 if (pParms->pszFilter)
433 {
434 RTStrFree(pParms->pszFilter);
435 pParms->pszFilter = NULL;
436 }
437
438 if (pParms->pszPath)
439 {
440 RTStrFree(pParms->pszPath);
441 pParms->pszPath = NULL;
442 }
443}
444
445/**
446 * Creates (allocates) and initializes a clipboard list entry structure.
447 *
448 * @returns VBox status code.
449 * @param ppListEntry Where to return the created clipboard list entry structure on success.
450 * Must be free'd with ShClTransferListEntryFree().
451 */
452int ShClTransferListEntryAlloc(PSHCLLISTENTRY *ppListEntry)
453{
454 AssertPtrReturn(ppListEntry, VERR_INVALID_POINTER);
455
456 PSHCLLISTENTRY pListEntry = (PSHCLLISTENTRY)RTMemAllocZ(sizeof(SHCLLISTENTRY));
457 if (!pListEntry)
458 return VERR_NO_MEMORY;
459
460 *ppListEntry = pListEntry;
461
462 return VINF_SUCCESS;
463}
464
465/**
466 * Frees a clipboard list entry structure.
467 *
468 * @param pEntry Clipboard list entry structure to free.
469 * The pointer will be invalid on return.
470 */
471void ShClTransferListEntryFree(PSHCLLISTENTRY pEntry)
472{
473 if (!pEntry)
474 return;
475
476 /* Make sure to destroy the entry properly, in case the caller forgot this. */
477 ShClTransferListEntryDestroy(pEntry);
478
479 RTMemFree(pEntry);
480 pEntry = NULL;
481}
482
483/**
484 * (Deep-)Copies a clipboard list entry structure.
485 *
486 * @returns VBox status code.
487 * @param pDst Destination list entry to copy to.
488 * @param pSrc Source list entry to copy from.
489 */
490int ShClTransferListEntryCopy(PSHCLLISTENTRY pDst, PSHCLLISTENTRY pSrc)
491{
492 AssertPtrReturn(pDst, VERR_INVALID_POINTER);
493 AssertPtrReturn(pSrc, VERR_INVALID_POINTER);
494
495 int rc = VINF_SUCCESS;
496
497 *pDst = *pSrc;
498
499 if (pSrc->pszName)
500 {
501 pDst->pszName = RTStrDup(pSrc->pszName);
502 if (!pDst->pszName)
503 rc = VERR_NO_MEMORY;
504 }
505
506 if ( RT_SUCCESS(rc)
507 && pSrc->pvInfo)
508 {
509 pDst->pvInfo = RTMemDup(pSrc->pvInfo, pSrc->cbInfo);
510 if (pDst->pvInfo)
511 {
512 pDst->cbInfo = pSrc->cbInfo;
513 }
514 else
515 rc = VERR_NO_MEMORY;
516 }
517
518 if (RT_FAILURE(rc))
519 {
520 if (pDst->pvInfo)
521 {
522 RTMemFree(pDst->pvInfo);
523 pDst->pvInfo = NULL;
524 pDst->cbInfo = 0;
525 }
526 }
527
528 return rc;
529}
530
531/**
532 * Duplicates (allocates) a clipboard list entry structure.
533 *
534 * @returns Duplicated clipboard list entry structure on success.
535 * @param pEntry Clipboard list entry to duplicate.
536 */
537PSHCLLISTENTRY ShClTransferListEntryDup(PSHCLLISTENTRY pEntry)
538{
539 AssertPtrReturn(pEntry, NULL);
540
541 int rc = VINF_SUCCESS;
542
543 PSHCLLISTENTRY pListEntryDup = (PSHCLLISTENTRY)RTMemAllocZ(sizeof(SHCLLISTENTRY));
544 if (pListEntryDup)
545 rc = ShClTransferListEntryCopy(pListEntryDup, pEntry);
546
547 if (RT_FAILURE(rc))
548 {
549 ShClTransferListEntryDestroy(pListEntryDup);
550
551 RTMemFree(pListEntryDup);
552 pListEntryDup = NULL;
553 }
554
555 return pListEntryDup;
556}
557
558/**
559 * Returns whether a given list entry name is valid or not.
560 *
561 * @returns \c true if valid, or \c false if not.
562 * @param pszName Name to check.
563 * @param cbName Size (in bytes) of \a pszName to check.
564 * Includes terminator.
565 */
566static bool shclTransferListEntryNameIsValid(const char *pszName, size_t cbName)
567{
568 if (!pszName)
569 return false;
570
571 size_t const cchLen = strlen(pszName);
572
573 if ( !cbName
574 || cchLen == 0
575 || cchLen > cbName /* Includes zero termination */ - 1
576 || cchLen > SHCLLISTENTRY_MAX_NAME /* Ditto */ - 1)
577 {
578 return false;
579 }
580
581 int rc = ShClTransferValidatePath(pszName, false /* fMustExist */);
582 if (RT_FAILURE(rc))
583 return false;
584
585 return true;
586}
587
588/**
589 * Initializes a clipboard list entry structure, extended version.
590 *
591 * @returns VBox status code.
592 * @param pListEntry Clipboard list entry structure to initialize.
593 * @param fInfo Info flags (of type VBOX_SHCL_INFO_F_XXX).
594 * @param pszName Name (e.g. filename) to use. Can be NULL if not being used.
595 * Up to SHCLLISTENTRY_MAX_NAME characters.
596 * @param pvInfo Pointer to info data to assign. Must match \a fInfo.
597 * The list entry takes the ownership of the data on success.
598 * @param cbInfo Size (in bytes) of \a pvInfo data to assign.
599 */
600int ShClTransferListEntryInitEx(PSHCLLISTENTRY pListEntry, uint32_t fInfo, const char *pszName, void *pvInfo, uint32_t cbInfo)
601{
602 AssertPtrReturn(pListEntry, VERR_INVALID_POINTER);
603 AssertReturn ( pszName == NULL
604 || shclTransferListEntryNameIsValid(pszName, strlen(pszName) + 1), VERR_INVALID_PARAMETER);
605 /* pvInfo + cbInfo depend on fInfo. See below. */
606
607 RT_BZERO(pListEntry, sizeof(SHCLLISTENTRY));
608
609 if (pszName)
610 {
611 pListEntry->pszName = RTStrDupN(pszName, SHCLLISTENTRY_MAX_NAME);
612 AssertPtrReturn(pListEntry->pszName, VERR_NO_MEMORY);
613 pListEntry->cbName = (uint32_t)strlen(pListEntry->pszName) + 1 /* Include terminator */;
614 }
615
616 pListEntry->pvInfo = pvInfo;
617 pListEntry->cbInfo = cbInfo;
618 pListEntry->fInfo = fInfo;
619
620 return VINF_SUCCESS;
621}
622
623/**
624 * Initializes a clipboard list entry structure (as empty / invalid).
625 *
626 * @returns VBox status code.
627 * @param pListEntry Clipboard list entry structure to initialize.
628 */
629int ShClTransferListEntryInit(PSHCLLISTENTRY pListEntry)
630{
631 return ShClTransferListEntryInitEx(pListEntry, VBOX_SHCL_INFO_F_NONE, NULL /* pszName */, NULL /* pvInfo */, 0 /* cbInfo */);
632}
633
634/**
635 * Destroys a clipboard list entry structure.
636 *
637 * @param pListEntry Clipboard list entry structure to destroy.
638 */
639void ShClTransferListEntryDestroy(PSHCLLISTENTRY pListEntry)
640{
641 if (!pListEntry)
642 return;
643
644 if (pListEntry->pszName)
645 {
646 RTStrFree(pListEntry->pszName);
647
648 pListEntry->pszName = NULL;
649 pListEntry->cbName = 0;
650 }
651
652 if (pListEntry->pvInfo)
653 {
654 RTMemFree(pListEntry->pvInfo);
655 pListEntry->pvInfo = NULL;
656 pListEntry->cbInfo = 0;
657 }
658}
659
660/**
661 * Returns whether a given clipboard list entry is valid or not.
662 *
663 * @returns \c true if valid, \c false if not.
664 * @param pListEntry Clipboard list entry to validate.
665 */
666bool ShClTransferListEntryIsValid(PSHCLLISTENTRY pListEntry)
667{
668 AssertPtrReturn(pListEntry, false);
669
670 bool fValid = false;
671
672 if (shclTransferListEntryNameIsValid(pListEntry->pszName, pListEntry->cbName))
673 {
674 fValid = pListEntry->cbInfo == 0 /* cbInfo / pvInfo is optional. */
675 || pListEntry->pvInfo != NULL;
676 }
677
678 if (!fValid)
679 LogRel2(("Shared Clipboard: List entry '%s' is invalid\n", pListEntry->pszName));
680
681 return fValid;
682}
683
684
685/*********************************************************************************************************************************
686 * Transfer Object *
687 ********************************************************************************************************************************/
688
689/**
690 * Initializes a transfer object context.
691 *
692 * @returns VBox status code.
693 * @param pObjCtx Transfer object context to initialize.
694 */
695int ShClTransferObjCtxInit(PSHCLCLIENTTRANSFEROBJCTX pObjCtx)
696{
697 AssertPtrReturn(pObjCtx, VERR_INVALID_POINTER);
698
699 LogFlowFuncEnter();
700
701 pObjCtx->uHandle = NIL_SHCLOBJHANDLE;
702
703 return VINF_SUCCESS;
704}
705
706/**
707 * Destroys a transfer object context.
708 *
709 * @param pObjCtx Transfer object context to destroy.
710 */
711void ShClTransferObjCtxDestroy(PSHCLCLIENTTRANSFEROBJCTX pObjCtx)
712{
713 AssertPtrReturnVoid(pObjCtx);
714
715 LogFlowFuncEnter();
716}
717
718/**
719 * Returns if a transfer object context is valid or not.
720 *
721 * @returns \c true if valid, \c false if not.
722 * @param pObjCtx Transfer object context to check.
723 */
724bool ShClTransferObjCtxIsValid(PSHCLCLIENTTRANSFEROBJCTX pObjCtx)
725{
726 return ( pObjCtx
727 && pObjCtx->uHandle != NIL_SHCLOBJHANDLE);
728}
729
730/**
731 * Initializes a transfer object structure.
732 *
733 * @returns VBox status code.
734 * @param pObj Object structure to initialize.
735 */
736int ShClTransferObjInit(PSHCLTRANSFEROBJ pObj)
737{
738 AssertPtrReturn(pObj, VERR_INVALID_POINTER);
739
740 pObj->hObj = NIL_SHCLOBJHANDLE;
741 pObj->enmType = SHCLOBJTYPE_INVALID;
742
743 pObj->pszPathLocalAbs = NULL;
744
745 RT_ZERO(pObj->u);
746
747 return VINF_SUCCESS;
748}
749
750/**
751 * Destroys a transfer object structure.
752 *
753 * @param pObj Object structure to destroy.
754 */
755void ShClTransferObjDestroy(PSHCLTRANSFEROBJ pObj)
756{
757 if (!pObj)
758 return;
759
760 if (pObj->pszPathLocalAbs)
761 {
762 RTStrFree(pObj->pszPathLocalAbs);
763 pObj->pszPathLocalAbs = NULL;
764 }
765}
766
767/**
768 * Initializes a transfer object open parameters structure.
769 *
770 * @returns VBox status code.
771 * @param pParms Transfer object open parameters structure to initialize.
772 */
773int ShClTransferObjOpenParmsInit(PSHCLOBJOPENCREATEPARMS pParms)
774{
775 AssertPtrReturn(pParms, VERR_INVALID_POINTER);
776
777 int rc;
778
779 RT_BZERO(pParms, sizeof(SHCLOBJOPENCREATEPARMS));
780
781 pParms->cbPath = RTPATH_MAX; /** @todo Make this dynamic. */
782 pParms->pszPath = RTStrAlloc(pParms->cbPath);
783 if (pParms->pszPath)
784 {
785 rc = VINF_SUCCESS;
786 }
787 else
788 rc = VERR_NO_MEMORY;
789
790 LogFlowFuncLeaveRC(rc);
791 return rc;
792}
793
794/**
795 * Copies a transfer object open parameters structure from source to destination.
796 *
797 * @returns VBox status code.
798 * @param pParmsDst Where to copy the source transfer object open parameters to.
799 * @param pParmsSrc Which source transfer object open parameters to copy.
800 */
801int ShClTransferObjOpenParmsCopy(PSHCLOBJOPENCREATEPARMS pParmsDst, PSHCLOBJOPENCREATEPARMS pParmsSrc)
802{
803 int rc;
804
805 *pParmsDst = *pParmsSrc;
806
807 if (pParmsSrc->pszPath)
808 {
809 Assert(pParmsSrc->cbPath);
810 pParmsDst->pszPath = RTStrDup(pParmsSrc->pszPath);
811 if (pParmsDst->pszPath)
812 {
813 rc = VINF_SUCCESS;
814 }
815 else
816 rc = VERR_NO_MEMORY;
817 }
818 else
819 rc = VINF_SUCCESS;
820
821 LogFlowFuncLeaveRC(rc);
822 return rc;
823}
824
825/**
826 * Destroys a transfer object open parameters structure.
827 *
828 * @param pParms Transfer object open parameters structure to destroy.
829 */
830void ShClTransferObjOpenParmsDestroy(PSHCLOBJOPENCREATEPARMS pParms)
831{
832 if (!pParms)
833 return;
834
835 if (pParms->pszPath)
836 {
837 RTStrFree(pParms->pszPath);
838 pParms->pszPath = NULL;
839 }
840}
841
842/**
843 * Returns a specific transfer object of a transfer.
844 *
845 * @returns Pointer to transfer object if found, or NULL if not found.
846 * @param pTransfer Clipboard transfer to get transfer object from.
847 * @param hObj Object handle of the object to get handle info for.
848 */
849PSHCLTRANSFEROBJ ShClTransferObjGet(PSHCLTRANSFER pTransfer, SHCLOBJHANDLE hObj)
850{
851 PSHCLTRANSFEROBJ pIt;
852 RTListForEach(&pTransfer->lstObj, pIt, SHCLTRANSFEROBJ, Node) /** @todo Slooow ...but works for now. */
853 {
854 if (pIt->hObj == hObj)
855 return pIt;
856 }
857
858 return NULL;
859}
860
861/**
862 * Opens a transfer object.
863 *
864 * @returns VBox status code.
865 * @param pTransfer Clipboard transfer to open the object for.
866 * @param pOpenCreateParms Open / create parameters of transfer object to open / create.
867 * @param phObj Where to store the handle of transfer object opened on success.
868 */
869int ShClTransferObjOpen(PSHCLTRANSFER pTransfer, PSHCLOBJOPENCREATEPARMS pOpenCreateParms, PSHCLOBJHANDLE phObj)
870{
871 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
872 AssertPtrReturn(pOpenCreateParms, VERR_INVALID_POINTER);
873 AssertPtrReturn(phObj, VERR_INVALID_POINTER);
874 AssertMsgReturn(pTransfer->pszPathRootAbs, ("Transfer has no root path set\n"), VERR_INVALID_PARAMETER);
875 /** @todo Check pOpenCreateParms->fCreate flags. */
876 AssertMsgReturn(pOpenCreateParms->pszPath, ("No path in open/create params set\n"), VERR_INVALID_PARAMETER);
877
878 if (pTransfer->cObjHandles >= pTransfer->cMaxObjHandles)
879 return VERR_SHCLPB_MAX_OBJECTS_REACHED;
880
881 LogFlowFunc(("pszPath=%s, fCreate=0x%x\n", pOpenCreateParms->pszPath, pOpenCreateParms->fCreate));
882
883 int rc;
884 if (pTransfer->ProviderIface.pfnObjOpen)
885 rc = pTransfer->ProviderIface.pfnObjOpen(&pTransfer->ProviderCtx, pOpenCreateParms, phObj);
886 else
887 rc = VERR_NOT_SUPPORTED;
888
889 if (RT_FAILURE(rc))
890 LogRel(("Shared Clipboard: Opening object '%s' (flags %#x) failed with %Rrc\n",
891 pOpenCreateParms->pszPath, pOpenCreateParms->fCreate, rc));
892
893 LogFlowFuncLeaveRC(rc);
894 return rc;
895}
896
897/**
898 * Closes a transfer object.
899 *
900 * @returns VBox status code.
901 * @param pTransfer Clipboard transfer that contains the object to close.
902 * @param hObj Handle of transfer object to close.
903 */
904int ShClTransferObjClose(PSHCLTRANSFER pTransfer, SHCLOBJHANDLE hObj)
905{
906 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
907
908 int rc;
909 if (pTransfer->ProviderIface.pfnObjClose)
910 rc = pTransfer->ProviderIface.pfnObjClose(&pTransfer->ProviderCtx, hObj);
911 else
912 rc = VERR_NOT_SUPPORTED;
913
914 if (RT_FAILURE(rc))
915 LogRel(("Shared Clipboard: Reading object 0x%x failed with %Rrc\n", hObj, rc));
916
917 LogFlowFuncLeaveRC(rc);
918 return rc;
919}
920
921/**
922 * Reads from a transfer object.
923 *
924 * @returns VBox status code.
925 * @param pTransfer Clipboard transfer that contains the object to read from.
926 * @param hObj Handle of transfer object to read from.
927 * @param pvBuf Buffer for where to store the read data.
928 * @param cbBuf Size (in bytes) of buffer.
929 * @param fFlags Read flags. Optional.
930 * @param pcbRead Where to return how much bytes were read on success. Optional.
931 */
932int ShClTransferObjRead(PSHCLTRANSFER pTransfer,
933 SHCLOBJHANDLE hObj, void *pvBuf, uint32_t cbBuf, uint32_t fFlags, uint32_t *pcbRead)
934{
935 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
936 AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
937 AssertReturn (cbBuf, VERR_INVALID_PARAMETER);
938 /* pcbRead is optional. */
939 /** @todo Validate fFlags. */
940
941 int rc;
942 if (pTransfer->ProviderIface.pfnObjRead)
943 rc = pTransfer->ProviderIface.pfnObjRead(&pTransfer->ProviderCtx, hObj, pvBuf, cbBuf, fFlags, pcbRead);
944 else
945 rc = VERR_NOT_SUPPORTED;
946
947 if (RT_FAILURE(rc))
948 LogRel(("Shared Clipboard: Reading object 0x%x failed with %Rrc\n", hObj, rc));
949
950 LogFlowFuncLeaveRC(rc);
951 return rc;
952}
953
954/**
955 * Writes to a transfer object.
956 *
957 * @returns VBox status code.
958 * @param pTransfer Clipboard transfer that contains the object to write to.
959 * @param hObj Handle of transfer object to write to.
960 * @param pvBuf Buffer of data to write.
961 * @param cbBuf Size (in bytes) of buffer to write.
962 * @param fFlags Write flags. Optional.
963 * @param pcbWritten How much bytes were writtenon success. Optional.
964 */
965int ShClTransferObjWrite(PSHCLTRANSFER pTransfer,
966 SHCLOBJHANDLE hObj, void *pvBuf, uint32_t cbBuf, uint32_t fFlags, uint32_t *pcbWritten)
967{
968 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
969 AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
970 AssertReturn (cbBuf, VERR_INVALID_PARAMETER);
971 /* pcbWritten is optional. */
972
973 int rc;
974 if (pTransfer->ProviderIface.pfnObjWrite)
975 rc = pTransfer->ProviderIface.pfnObjWrite(&pTransfer->ProviderCtx, hObj, pvBuf, cbBuf, fFlags, pcbWritten);
976 else
977 rc = VERR_NOT_SUPPORTED;
978
979 if (RT_FAILURE(rc))
980 LogRel(("Shared Clipboard: Writing object 0x%x failed with %Rrc\n", hObj, rc));
981
982 LogFlowFuncLeaveRC(rc);
983 return rc;
984}
985
986/**
987 * Duplicates a transfer object data chunk.
988 *
989 * @returns Duplicated object data chunk on success, or NULL on failure.
990 * @param pDataChunk Transfer object data chunk to duplicate.
991 */
992PSHCLOBJDATACHUNK ShClTransferObjDataChunkDup(PSHCLOBJDATACHUNK pDataChunk)
993{
994 AssertPtrReturn(pDataChunk, NULL);
995
996 PSHCLOBJDATACHUNK pDataChunkDup = (PSHCLOBJDATACHUNK)RTMemAllocZ(sizeof(SHCLOBJDATACHUNK));
997 if (!pDataChunkDup)
998 return NULL;
999
1000 if (pDataChunk->pvData)
1001 {
1002 Assert(pDataChunk->cbData);
1003
1004 pDataChunkDup->uHandle = pDataChunk->uHandle;
1005 pDataChunkDup->pvData = RTMemDup(pDataChunk->pvData, pDataChunk->cbData);
1006 AssertPtrReturn(pDataChunkDup->pvData, NULL);
1007 pDataChunkDup->cbData = pDataChunk->cbData;
1008 }
1009
1010 return pDataChunkDup;
1011}
1012
1013/**
1014 * Destroys a transfer object data chunk.
1015 *
1016 * @param pDataChunk Transfer object data chunk to destroy.
1017 */
1018void ShClTransferObjDataChunkDestroy(PSHCLOBJDATACHUNK pDataChunk)
1019{
1020 if (!pDataChunk)
1021 return;
1022
1023 if (pDataChunk->pvData)
1024 {
1025 Assert(pDataChunk->cbData);
1026
1027 RTMemFree(pDataChunk->pvData);
1028
1029 pDataChunk->pvData = NULL;
1030 pDataChunk->cbData = 0;
1031 }
1032
1033 pDataChunk->uHandle = 0;
1034}
1035
1036/**
1037 * Frees a transfer object data chunk.
1038 *
1039 * @param pDataChunk Transfer object data chunk to free.
1040 * The pointer will be invalid on return.
1041 */
1042void ShClTransferObjDataChunkFree(PSHCLOBJDATACHUNK pDataChunk)
1043{
1044 if (!pDataChunk)
1045 return;
1046
1047 ShClTransferObjDataChunkDestroy(pDataChunk);
1048
1049 RTMemFree(pDataChunk);
1050 pDataChunk = NULL;
1051}
1052
1053
1054/*********************************************************************************************************************************
1055 * Transfer *
1056 ********************************************************************************************************************************/
1057
1058/**
1059 * Creates a clipboard transfer, extended version.
1060 *
1061 * @returns VBox status code.
1062 * @param enmDir Specifies the transfer direction of this transfer.
1063 * @param enmSource Specifies the data source of the transfer.
1064 * @param pCallbacks Callback table to use. Optional and can be NULL.
1065 * @param cbMaxChunkSize Maximum transfer chunk size (in bytes) to use.
1066 * @param cMaxListHandles Maximum list entries the transfer can have.
1067 * @param cMaxObjHandles Maximum transfer objects the transfer can have.
1068 * @param ppTransfer Where to return the created clipboard transfer struct.
1069 * Must be destroyed by ShClTransferDestroy().
1070 */
1071int ShClTransferCreateEx(SHCLTRANSFERDIR enmDir, SHCLSOURCE enmSource, PSHCLTRANSFERCALLBACKS pCallbacks,
1072 uint32_t cbMaxChunkSize, uint32_t cMaxListHandles, uint32_t cMaxObjHandles, PSHCLTRANSFER *ppTransfer)
1073{
1074 AssertPtrReturn(ppTransfer, VERR_INVALID_POINTER);
1075 /* pCallbacks can be NULL. */
1076
1077 LogFlowFuncEnter();
1078
1079 PSHCLTRANSFER pTransfer = (PSHCLTRANSFER)RTMemAllocZ(sizeof(SHCLTRANSFER));
1080 AssertPtrReturn(pTransfer, VERR_NO_MEMORY);
1081
1082 pTransfer->State.uID = NIL_SHCLTRANSFERID;
1083 pTransfer->State.enmStatus = SHCLTRANSFERSTATUS_NONE;
1084 pTransfer->State.enmDir = enmDir;
1085 pTransfer->State.enmSource = enmSource;
1086
1087 pTransfer->Thread.hThread = NIL_RTTHREAD;
1088 pTransfer->Thread.fCancelled = false;
1089 pTransfer->Thread.fStarted = false;
1090 pTransfer->Thread.fStop = false;
1091
1092 pTransfer->pszPathRootAbs = NULL;
1093
1094 pTransfer->uTimeoutMs = SHCL_TIMEOUT_DEFAULT_MS;
1095 pTransfer->cbMaxChunkSize = cbMaxChunkSize;
1096 pTransfer->cMaxListHandles = cMaxListHandles;
1097 pTransfer->cMaxObjHandles = cMaxObjHandles;
1098
1099 pTransfer->pvUser = NULL;
1100 pTransfer->cbUser = 0;
1101
1102 RTListInit(&pTransfer->lstHandles);
1103 RTListInit(&pTransfer->lstObj);
1104
1105 /* The provider context + interface is NULL by default. */
1106 RT_ZERO(pTransfer->ProviderCtx);
1107 RT_ZERO(pTransfer->ProviderIface);
1108
1109 /* Make sure to set the callbacks before calling pfnOnCreate below. */
1110 shClTransferSetCallbacks(pTransfer, pCallbacks);
1111
1112 ShClTransferListInit(&pTransfer->lstRoots);
1113
1114 int rc = RTCritSectInit(&pTransfer->CritSect);
1115 AssertRCReturn(rc, rc);
1116
1117 rc = RTSemEventCreate(&pTransfer->StatusChangeEvent);
1118 AssertRCReturn(rc, rc);
1119
1120 rc = ShClEventSourceCreate(&pTransfer->Events, 0 /* uID */);
1121 if (RT_SUCCESS(rc))
1122 {
1123 if (pTransfer->Callbacks.pfnOnCreated)
1124 pTransfer->Callbacks.pfnOnCreated(&pTransfer->CallbackCtx);
1125
1126 *ppTransfer = pTransfer;
1127 }
1128 else
1129 {
1130 if (pTransfer)
1131 {
1132 ShClTransferDestroy(pTransfer);
1133 RTMemFree(pTransfer);
1134 }
1135 }
1136
1137 LogFlowFuncLeaveRC(rc);
1138 return rc;
1139}
1140
1141/**
1142 * Creates a clipboard transfer with default settings.
1143 *
1144 * @returns VBox status code.
1145 * @param enmDir Specifies the transfer direction of this transfer.
1146 * @param enmSource Specifies the data source of the transfer.
1147 * @param pCallbacks Callback table to use. Optional and can be NULL.
1148 * @param ppTransfer Where to return the created clipboard transfer struct.
1149 * Must be destroyed by ShClTransferDestroy().
1150 */
1151int ShClTransferCreate(SHCLTRANSFERDIR enmDir, SHCLSOURCE enmSource, PSHCLTRANSFERCALLBACKS pCallbacks, PSHCLTRANSFER *ppTransfer)
1152{
1153 return ShClTransferCreateEx(enmDir, enmSource, pCallbacks,
1154 SHCL_TRANSFER_DEFAULT_MAX_CHUNK_SIZE,
1155 SHCL_TRANSFER_DEFAULT_MAX_LIST_HANDLES,
1156 SHCL_TRANSFER_DEFAULT_MAX_OBJ_HANDLES,
1157 ppTransfer);
1158}
1159
1160/**
1161 * Destroys a clipboard transfer.
1162 *
1163 * @returns VBox status code.
1164 * @param pTransferCtx Clipboard transfer to destroy.
1165 */
1166int ShClTransferDestroy(PSHCLTRANSFER pTransfer)
1167{
1168 if (!pTransfer)
1169 return VINF_SUCCESS;
1170
1171 if (!RTCritSectIsInitialized(&pTransfer->CritSect))
1172 return VINF_SUCCESS;
1173
1174 /* Must come before the refcount check below, as the callback might release a reference. */
1175 if (pTransfer->Callbacks.pfnOnDestroy)
1176 pTransfer->Callbacks.pfnOnDestroy(&pTransfer->CallbackCtx);
1177
1178 AssertMsgReturn(ASMAtomicReadU32(&pTransfer->cRefs) == 0,
1179 ("Number of references > 0 (%RU32)\n", pTransfer->cRefs), VERR_WRONG_ORDER);
1180
1181 LogFlowFuncEnter();
1182
1183 int rc = shClTransferThreadDestroy(pTransfer, SHCL_TIMEOUT_DEFAULT_MS);
1184 if (RT_FAILURE(rc))
1185 return rc;
1186
1187 ShClTransferReset(pTransfer);
1188
1189 if (RTCritSectIsInitialized(&pTransfer->CritSect))
1190 RTCritSectDelete(&pTransfer->CritSect);
1191
1192 rc = RTSemEventDestroy(pTransfer->StatusChangeEvent);
1193 AssertRCReturn(rc, rc);
1194 pTransfer->StatusChangeEvent = NIL_RTSEMEVENT;
1195
1196 ShClEventSourceDestroy(&pTransfer->Events);
1197
1198 LogFlowFuncLeave();
1199 return VINF_SUCCESS;
1200}
1201
1202/**
1203 * Initializes a clipboard transfer.
1204 *
1205 * @returns VBox status code.
1206 * @param pTransfer Transfer to initialize.
1207 */
1208int ShClTransferInit(PSHCLTRANSFER pTransfer)
1209{
1210 shClTransferLock(pTransfer);
1211
1212 AssertMsgReturnStmt(pTransfer->State.enmStatus < SHCLTRANSFERSTATUS_INITIALIZED,
1213 ("Wrong status (currently is %s)\n", ShClTransferStatusToStr(pTransfer->State.enmStatus)),
1214 shClTransferUnlock(pTransfer), VERR_WRONG_ORDER);
1215
1216 pTransfer->cRefs = 0;
1217
1218 LogFlowFunc(("uID=%RU32, enmDir=%RU32, enmSource=%RU32\n",
1219 pTransfer->State.uID, pTransfer->State.enmDir, pTransfer->State.enmSource));
1220
1221 pTransfer->cListHandles = 0;
1222 pTransfer->uListHandleNext = 1;
1223
1224 pTransfer->cObjHandles = 0;
1225 pTransfer->uObjHandleNext = 1;
1226
1227 pTransfer->Thread.fStarted = false;
1228 pTransfer->Thread.fStop = false;
1229 pTransfer->Thread.fCancelled = false;
1230
1231 int rc = shClTransferSetStatus(pTransfer, SHCLTRANSFERSTATUS_INITIALIZED);
1232
1233 shClTransferUnlock(pTransfer);
1234
1235 if (RT_SUCCESS(rc))
1236 {
1237 if (pTransfer->Callbacks.pfnOnInitialized)
1238 pTransfer->Callbacks.pfnOnInitialized(&pTransfer->CallbackCtx);
1239 }
1240
1241 LogFlowFuncLeaveRC(rc);
1242 return rc;
1243}
1244
1245/**
1246 * Returns whether a transfer is in a running state or not.
1247 *
1248 * @returns @c true if in running state, or @c false if not.
1249 * @param pTransfer Clipboard transfer to return status for.
1250 */
1251bool ShClTransferIsRunning(PSHCLTRANSFER pTransfer)
1252{
1253 shClTransferLock(pTransfer);
1254
1255 bool const fRunning = pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_STARTED;
1256
1257 shClTransferUnlock(pTransfer);
1258
1259 return fRunning;
1260}
1261
1262/**
1263 * Returns whether a transfer has been (successfully) completed or not.
1264 *
1265 * @returns @c true if complete, or @c false if not.
1266 * @param pTransfer Clipboard transfer to return status for.
1267 */
1268bool ShClTransferIsComplete(PSHCLTRANSFER pTransfer)
1269{
1270 shClTransferLock(pTransfer);
1271
1272 bool const fCompleted = pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_COMPLETED;
1273
1274 shClTransferUnlock(pTransfer);
1275
1276 return fCompleted;
1277}
1278
1279/**
1280 * Returns whether a transfer has been aborted due to cancelling, killing or an error.
1281 *
1282 * @returns @c true if in aborted state, or @c false if not.
1283 * @param pTransfer Clipboard transfer to return status for.
1284 */
1285bool ShClTransferIsAborted(PSHCLTRANSFER pTransfer)
1286{
1287 shClTransferLock(pTransfer);
1288
1289 bool const fAborted = pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_CANCELED
1290 || pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_KILLED
1291 || pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_ERROR;
1292
1293 shClTransferUnlock(pTransfer);
1294
1295 return fAborted;
1296}
1297
1298/**
1299 * Locks a transfer.
1300 *
1301 * @param pTransfer Transfer to lock.
1302 */
1303DECLINLINE(void) shClTransferLock(PSHCLTRANSFER pTransfer)
1304{
1305 int rc2 = RTCritSectEnter(&pTransfer->CritSect);
1306 AssertRC(rc2);
1307}
1308
1309/**
1310 * Unlocks a transfer.
1311 *
1312 * @param pTransfer Transfer to unlock.
1313 */
1314DECLINLINE(void) shClTransferUnlock(PSHCLTRANSFER pTransfer)
1315{
1316 int rc2 = RTCritSectLeave(&pTransfer->CritSect);
1317 AssertRC(rc2);
1318}
1319
1320/**
1321 * Acquires a reference to this transfer.
1322 *
1323 * @returns New reference count.
1324 * @param pTransfer Transfer to acquire reference for.
1325 */
1326uint32_t ShClTransferAcquire(PSHCLTRANSFER pTransfer)
1327{
1328 return ASMAtomicIncU32(&pTransfer->cRefs);
1329}
1330
1331/**
1332 * Releases a reference to this transfer.
1333 *
1334 * @returns New reference count.
1335 * @param pTransfer Transfer to release reference for.
1336 */
1337uint32_t ShClTransferRelease(PSHCLTRANSFER pTransfer)
1338{
1339 const uint32_t cRefs = ASMAtomicDecU32(&pTransfer->cRefs);
1340 Assert(pTransfer->cRefs <= VBOX_SHCL_MAX_TRANSFERS); /* Not perfect, but better than nothing. */
1341 return cRefs;
1342}
1343
1344/**
1345 * Opens a transfer list.
1346 *
1347 * @returns VBox status code.
1348 * @param pTransfer Clipboard transfer to handle.
1349 * @param pOpenParms List open parameters to use for opening.
1350 * @param phList Where to store the List handle of opened list on success.
1351 */
1352int ShClTransferListOpen(PSHCLTRANSFER pTransfer, PSHCLLISTOPENPARMS pOpenParms,
1353 PSHCLLISTHANDLE phList)
1354{
1355 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
1356 AssertPtrReturn(pOpenParms, VERR_INVALID_POINTER);
1357 AssertPtrReturn(phList, VERR_INVALID_POINTER);
1358
1359 if (pTransfer->cListHandles == pTransfer->cMaxListHandles)
1360 return VERR_SHCLPB_MAX_LISTS_REACHED;
1361
1362 int rc;
1363 if (pTransfer->ProviderIface.pfnListOpen)
1364 rc = pTransfer->ProviderIface.pfnListOpen(&pTransfer->ProviderCtx, pOpenParms, phList);
1365 else
1366 rc = VERR_NOT_SUPPORTED;
1367
1368 if (RT_FAILURE(rc))
1369 LogRel(("Shared Clipboard: Opening list '%s' (fiter '%s', flags %#x) failed with %Rrc\n",
1370 pOpenParms->pszPath, pOpenParms->pszFilter, pOpenParms->fList, rc));
1371
1372 LogFlowFuncLeaveRC(rc);
1373 return rc;
1374}
1375
1376/**
1377 * Closes a transfer list.
1378 *
1379 * @returns VBox status code.
1380 * @param pTransfer Clipboard transfer to handle.
1381 * @param hList Handle of list to close.
1382 */
1383int ShClTransferListClose(PSHCLTRANSFER pTransfer, SHCLLISTHANDLE hList)
1384{
1385 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
1386
1387 if (hList == NIL_SHCLLISTHANDLE)
1388 return VINF_SUCCESS;
1389
1390 int rc;
1391 if (pTransfer->ProviderIface.pfnListClose)
1392 rc = pTransfer->ProviderIface.pfnListClose(&pTransfer->ProviderCtx, hList);
1393 else
1394 rc = VERR_NOT_SUPPORTED;
1395
1396 if (RT_FAILURE(rc))
1397 LogRel(("Shared Clipboard: Closing list 0x%x entry failed with %Rrc\n", hList, rc));
1398
1399 LogFlowFuncLeaveRC(rc);
1400 return rc;
1401}
1402
1403/**
1404 * Retrieves the header of a transfer list.
1405 *
1406 * @returns VBox status code.
1407 * @param pTransfer Clipboard transfer to handle.
1408 * @param hList Handle of list to get header for.
1409 * @param pHdr Where to store the returned list header information.
1410 */
1411int ShClTransferListGetHeader(PSHCLTRANSFER pTransfer, SHCLLISTHANDLE hList,
1412 PSHCLLISTHDR pHdr)
1413{
1414 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
1415 AssertPtrReturn(pHdr, VERR_INVALID_POINTER);
1416
1417 LogFlowFunc(("hList=%RU64\n", hList));
1418
1419 int rc;
1420 if (pTransfer->ProviderIface.pfnListHdrRead)
1421 rc = pTransfer->ProviderIface.pfnListHdrRead(&pTransfer->ProviderCtx, hList, pHdr);
1422 else
1423 rc = VERR_NOT_SUPPORTED;
1424
1425 if (RT_FAILURE(rc))
1426 LogRel(("Shared Clipboard: Reading list header list 0x%x entry failed with %Rrc\n", hList, rc));
1427
1428 LogFlowFuncLeaveRC(rc);
1429 return rc;
1430}
1431
1432/**
1433 * Returns a specific list handle info of a clipboard transfer.
1434 *
1435 * @returns Pointer to list handle info if found, or NULL if not found.
1436 * @param pTransfer Clipboard transfer to get list handle info from.
1437 * @param hList List handle of the list to get handle info for.
1438 */
1439PSHCLLISTHANDLEINFO ShClTransferListGetByHandle(PSHCLTRANSFER pTransfer, SHCLLISTHANDLE hList)
1440{
1441 PSHCLLISTHANDLEINFO pIt;
1442 RTListForEach(&pTransfer->lstHandles, pIt, SHCLLISTHANDLEINFO, Node) /** @todo Sloooow ... improve this. */
1443 {
1444 if (pIt->hList == hList)
1445 return pIt;
1446 }
1447
1448 return NULL;
1449}
1450
1451/**
1452 * Returns the a transfer object of a transfer list.
1453 *
1454 * Currently not implemented and wil return NULL.
1455 *
1456 * @returns Pointer to transfer object, or NULL if not found / invalid.
1457 * @param pTransfer Clipboard transfer to return transfer object for.
1458 * @param hList Handle of clipboard transfer list to get object for.
1459 * @param uIdx Index of object to get.
1460 */
1461PSHCLTRANSFEROBJ ShClTransferListGetObj(PSHCLTRANSFER pTransfer,
1462 SHCLLISTHANDLE hList, uint64_t uIdx)
1463{
1464 AssertPtrReturn(pTransfer, NULL);
1465
1466 RT_NOREF(hList, uIdx);
1467
1468 LogFlowFunc(("hList=%RU64\n", hList));
1469
1470 return NULL;
1471}
1472
1473/**
1474 * Reads a single transfer list entry.
1475 *
1476 * @returns VBox status code or VERR_NO_MORE_FILES if the end of the list has been reached.
1477 * @param pTransfer Clipboard transfer to handle.
1478 * @param hList List handle of list to read from.
1479 * @param pEntry Where to store the read information.
1480 */
1481int ShClTransferListRead(PSHCLTRANSFER pTransfer, SHCLLISTHANDLE hList,
1482 PSHCLLISTENTRY pEntry)
1483{
1484 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
1485 AssertPtrReturn(pEntry, VERR_INVALID_POINTER);
1486
1487 LogFlowFunc(("hList=%RU64\n", hList));
1488
1489 int rc;
1490 if (pTransfer->ProviderIface.pfnListEntryRead)
1491 rc = pTransfer->ProviderIface.pfnListEntryRead(&pTransfer->ProviderCtx, hList, pEntry);
1492 else
1493 rc = VERR_NOT_SUPPORTED;
1494
1495 if (RT_FAILURE(rc))
1496 LogRel(("Shared Clipboard: Reading list for list 0x%x entry failed with %Rrc\n", hList, rc));
1497
1498 LogFlowFuncLeaveRC(rc);
1499 return rc;
1500}
1501
1502/**
1503 * Writes a single transfer list entry.
1504 *
1505 * @returns VBox status code.
1506 * @param pTransfer Clipboard transfer to handle.
1507 * @param hList List handle of list to write to.
1508 * @param pEntry Entry information to write.
1509 */
1510int ShClTransferListWrite(PSHCLTRANSFER pTransfer, SHCLLISTHANDLE hList,
1511 PSHCLLISTENTRY pEntry)
1512{
1513 RT_NOREF(pTransfer, hList, pEntry);
1514
1515 int rc = VINF_SUCCESS;
1516
1517#if 0
1518 if (pTransfer->ProviderIface.pfnListEntryWrite)
1519 rc = pTransfer->ProviderIface.pfnListEntryWrite(&pTransfer->ProviderCtx, hList, pEntry);
1520#endif
1521
1522 if (RT_FAILURE(rc))
1523 LogRel(("Shared Clipboard: Writing list entry to list 0x%x failed with %Rrc\n", hList, rc));
1524
1525 LogFlowFuncLeaveRC(rc);
1526 return rc;
1527}
1528
1529/**
1530 * Returns whether a given transfer list handle is valid or not.
1531 *
1532 * @returns \c true if list handle is valid, \c false if not.
1533 * @param pTransfer Clipboard transfer to handle.
1534 * @param hList List handle to check.
1535 */
1536bool ShClTransferListHandleIsValid(PSHCLTRANSFER pTransfer, SHCLLISTHANDLE hList)
1537{
1538 bool fIsValid = false;
1539
1540 if (pTransfer->State.enmSource == SHCLSOURCE_LOCAL)
1541 {
1542 fIsValid = ShClTransferListGetByHandle(pTransfer, hList) != NULL;
1543 }
1544 else if (pTransfer->State.enmSource == SHCLSOURCE_REMOTE)
1545 {
1546 AssertFailed(); /** @todo Implement. */
1547 }
1548 else
1549 AssertFailedStmt(fIsValid = false);
1550
1551 return fIsValid;
1552}
1553
1554/**
1555 * Copies a transfer callback table from source to destination.
1556 *
1557 * @param pCallbacksDst Callback destination.
1558 * @param pCallbacksSrc Callback source. If set to NULL, the
1559 * destination callback table will be unset.
1560 */
1561static void shClTransferCopyCallbacks(PSHCLTRANSFERCALLBACKS pCallbacksDst, PSHCLTRANSFERCALLBACKS pCallbacksSrc)
1562{
1563 AssertPtrReturnVoid(pCallbacksDst);
1564 /* pCallbacksSrc can be NULL */
1565
1566 if (pCallbacksSrc) /* Set */
1567 {
1568#define SET_CALLBACK(a_pfnCallback) \
1569 if (pCallbacksSrc->a_pfnCallback) \
1570 pCallbacksDst->a_pfnCallback = pCallbacksSrc->a_pfnCallback
1571
1572 SET_CALLBACK(pfnOnCreated);
1573 SET_CALLBACK(pfnOnInitialized);
1574 SET_CALLBACK(pfnOnDestroy);
1575 SET_CALLBACK(pfnOnStarted);
1576 SET_CALLBACK(pfnOnCompleted);
1577 SET_CALLBACK(pfnOnError);
1578 SET_CALLBACK(pfnOnRegistered);
1579 SET_CALLBACK(pfnOnUnregistered);
1580
1581#undef SET_CALLBACK
1582
1583 pCallbacksDst->pvUser = pCallbacksSrc->pvUser;
1584 pCallbacksDst->cbUser = pCallbacksSrc->cbUser;
1585 }
1586 else /* Unset */
1587 RT_BZERO(pCallbacksDst, sizeof(SHCLTRANSFERCALLBACKS));
1588}
1589
1590/**
1591 * Sets or unsets the callback table to be used for a clipboard transfer.
1592 *
1593 * @returns VBox status code.
1594 * @param pTransfer Clipboard transfer to set callbacks for.
1595 * @param pCallbacks Pointer to callback table to set. If set to NULL,
1596 * existing callbacks for this transfer will be unset.
1597 *
1598 * @note Must come before initializing the transfer via ShClTransferInit().
1599 */
1600static void shClTransferSetCallbacks(PSHCLTRANSFER pTransfer, PSHCLTRANSFERCALLBACKS pCallbacks)
1601{
1602 AssertPtrReturnVoid(pTransfer);
1603 /* pCallbacks can be NULL. */
1604
1605 shClTransferCopyCallbacks(&pTransfer->Callbacks, pCallbacks);
1606
1607 /* Make sure that the callback context has all values set according to the callback table.
1608 * This only needs to be done once, so do this here. */
1609 pTransfer->CallbackCtx.pTransfer = pTransfer;
1610 pTransfer->CallbackCtx.pvUser = pTransfer->Callbacks.pvUser;
1611 pTransfer->CallbackCtx.cbUser = pTransfer->Callbacks.cbUser;
1612}
1613
1614/**
1615 * Sets the transfer provider for a given transfer.
1616 *
1617 * @returns VBox status code.
1618 * @param pTransfer Transfer to create transfer provider for.
1619 * @param pProvider Provider to use.
1620 */
1621int ShClTransferSetProvider(PSHCLTRANSFER pTransfer, PSHCLTXPROVIDER pProvider)
1622{
1623 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
1624 AssertPtrReturn(pProvider, VERR_INVALID_POINTER);
1625
1626 LogFlowFuncEnter();
1627
1628 int rc = VINF_SUCCESS;
1629
1630 pTransfer->ProviderIface = pProvider->Interface;
1631 pTransfer->ProviderCtx.pTransfer = pTransfer;
1632 pTransfer->ProviderCtx.pvUser = pProvider->pvUser;
1633 pTransfer->ProviderCtx.cbUser = pProvider->cbUser;
1634
1635 LogFlowFuncLeaveRC(rc);
1636 return rc;
1637}
1638
1639/**
1640 * Sets the current status.
1641 *
1642 * @returns VBox status code.
1643 * @param pTransfer Clipboard transfer to set status for.
1644 * @param enmStatus Status to set.
1645 *
1646 * @note Caller needs to take critical section.
1647 */
1648static int shClTransferSetStatus(PSHCLTRANSFER pTransfer, SHCLTRANSFERSTATUS enmStatus)
1649{
1650 Assert(RTCritSectIsOwner(&pTransfer->CritSect));
1651#if 0
1652 AssertMsgReturn(pTransfer->State.enmStatus != enmStatus,
1653 ("Setting the same status twice in a row (%#x), please report this!\n", enmStatus), VERR_WRONG_ORDER);
1654#endif
1655 pTransfer->State.enmStatus = enmStatus;
1656
1657 LogFlowFunc(("enmStatus=%s\n", ShClTransferStatusToStr(pTransfer->State.enmStatus)));
1658
1659 return RTSemEventSignal(pTransfer->StatusChangeEvent);
1660}
1661
1662/**
1663 * Returns the number of transfer root list entries.
1664 *
1665 * @returns Root list entry count.
1666 * @param pTransfer Clipboard transfer to return root entry count for.
1667 */
1668uint64_t ShClTransferRootsCount(PSHCLTRANSFER pTransfer)
1669{
1670 AssertPtrReturn(pTransfer, 0);
1671
1672 shClTransferLock(pTransfer);
1673
1674 uint32_t const cRoots = pTransfer->lstRoots.Hdr.cEntries;
1675
1676 shClTransferUnlock(pTransfer);
1677
1678 return cRoots;
1679}
1680
1681/**
1682 * Resets the root list of a clipboard transfer.
1683 *
1684 * @param pTransfer Transfer to clear transfer root list for.
1685 *
1686 * @note Caller needs to take critical section.
1687 */
1688static void shClTransferRootsReset(PSHCLTRANSFER pTransfer)
1689{
1690 AssertPtrReturnVoid(pTransfer);
1691 Assert(RTCritSectIsOwner(&pTransfer->CritSect));
1692
1693 if (pTransfer->pszPathRootAbs)
1694 {
1695 RTStrFree(pTransfer->pszPathRootAbs);
1696 pTransfer->pszPathRootAbs = NULL;
1697 }
1698
1699 ShClTransferListDestroy(&pTransfer->lstRoots);
1700}
1701
1702/**
1703 * Resets a clipboard transfer.
1704 *
1705 * @param pTransfer Clipboard transfer to reset.
1706 */
1707void ShClTransferReset(PSHCLTRANSFER pTransfer)
1708{
1709 AssertPtrReturnVoid(pTransfer);
1710
1711 LogFlowFuncEnter();
1712
1713 shClTransferLock(pTransfer);
1714
1715 shClTransferRootsReset(pTransfer);
1716
1717 PSHCLLISTHANDLEINFO pItList, pItListNext;
1718 RTListForEachSafe(&pTransfer->lstHandles, pItList, pItListNext, SHCLLISTHANDLEINFO, Node)
1719 {
1720 ShClTransferListHandleInfoDestroy(pItList);
1721
1722 RTListNodeRemove(&pItList->Node);
1723
1724 RTMemFree(pItList);
1725 }
1726
1727 PSHCLTRANSFEROBJ pItObj, pItObjNext;
1728 RTListForEachSafe(&pTransfer->lstObj, pItObj, pItObjNext, SHCLTRANSFEROBJ, Node)
1729 {
1730 ShClTransferObjDestroy(pItObj);
1731
1732 RTListNodeRemove(&pItObj->Node);
1733
1734 RTMemFree(pItObj);
1735 }
1736
1737 shClTransferUnlock(pTransfer);
1738}
1739
1740/**
1741 * Get a specific root list entry.
1742 *
1743 * @returns Const pointer to root list entry if found, or NULL if not found..
1744 * @param pTransfer Clipboard transfer to get root list entry of.
1745 * @param uIndex Index (zero-based) of entry to get.
1746 */
1747PCSHCLLISTENTRY ShClTransferRootsEntryGet(PSHCLTRANSFER pTransfer, uint64_t uIndex)
1748{
1749 AssertPtrReturn(pTransfer, NULL);
1750
1751 shClTransferLock(pTransfer);
1752
1753 if (uIndex >= pTransfer->lstRoots.Hdr.cEntries)
1754 {
1755 shClTransferUnlock(pTransfer);
1756 return NULL;
1757 }
1758
1759 PCSHCLLISTENTRY pEntry = shClTransferListGetEntryById(&pTransfer->lstRoots, uIndex);
1760
1761 shClTransferUnlock(pTransfer);
1762
1763 return pEntry;
1764}
1765
1766/**
1767 * Reads the root entries of a clipboard transfer.
1768 *
1769 * This gives the provider interface the chance of reading root entries information.
1770 *
1771 * @returns VBox status code.
1772 * @param pTransfer Clipboard transfer to read root list for.
1773 * Must be in STARTED state.
1774 */
1775int ShClTransferRootListRead(PSHCLTRANSFER pTransfer)
1776{
1777 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
1778
1779 LogFlowFuncEnter();
1780
1781#ifdef DEBUG
1782 shClTransferLock(pTransfer);
1783 AssertMsgReturn( pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_INITIALIZED
1784 || pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_STARTED,
1785 ("Cannot read root list in status %s\n", ShClTransferStatusToStr(pTransfer->State.enmStatus)),
1786 VERR_WRONG_ORDER);
1787 shClTransferUnlock(pTransfer);
1788#endif
1789
1790 int rc;
1791 if (pTransfer->ProviderIface.pfnRootListRead)
1792 rc = pTransfer->ProviderIface.pfnRootListRead(&pTransfer->ProviderCtx);
1793 else
1794 rc = VERR_NOT_SUPPORTED;
1795
1796 shClTransferLock(pTransfer);
1797
1798 /* Make sure that we have at least an empty root path set. */
1799 if ( RT_SUCCESS(rc)
1800 && !pTransfer->pszPathRootAbs)
1801 {
1802 if (RTStrAPrintf(&pTransfer->pszPathRootAbs, "") < 0)
1803 rc = VERR_NO_MEMORY;
1804 }
1805
1806 shClTransferUnlock(pTransfer);
1807
1808 LogFlowFuncLeaveRC(rc);
1809 return rc;
1810}
1811
1812/**
1813 * Initializes the root list entries for a given clipboard transfer.
1814 *
1815 * @returns VBox status code.
1816 * @param pTransfer Transfer to set transfer list entries for.
1817 * @param pszRoots String list (separated by CRLF) of root entries to set.
1818 * All entries must have the same root path.
1819 * @param cbRoots Size (in bytes) of string list. Includes zero terminator.
1820 *
1821 * @note Accepts local paths or URI string lists (absolute only).
1822 */
1823int ShClTransferRootsInitFromStringList(PSHCLTRANSFER pTransfer, const char *pszRoots, size_t cbRoots)
1824{
1825 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
1826 AssertPtrReturn(pszRoots, VERR_INVALID_POINTER);
1827 AssertReturn(cbRoots, VERR_INVALID_PARAMETER);
1828
1829#ifdef DEBUG_andy
1830 LogFlowFunc(("Data:\n%.*Rhxd\n", cbRoots, pszRoots));
1831#endif
1832
1833 if (!RTStrIsValidEncoding(pszRoots))
1834 return VERR_INVALID_UTF8_ENCODING;
1835
1836 int rc = VINF_SUCCESS;
1837
1838 shClTransferLock(pTransfer);
1839
1840 shClTransferRootsReset(pTransfer);
1841
1842 PSHCLLIST pLstRoots = &pTransfer->lstRoots;
1843 char *pszPathRootAbs = NULL;
1844
1845 RTCList<RTCString> lstRootEntries = RTCString(pszRoots, cbRoots).split(SHCL_TRANSFER_URI_LIST_SEP_STR);
1846 if (!lstRootEntries.size())
1847 {
1848 shClTransferUnlock(pTransfer);
1849 return VINF_SUCCESS;
1850 }
1851
1852 for (size_t i = 0; i < lstRootEntries.size(); ++i)
1853 {
1854 char *pszPathCur = NULL;
1855
1856 char *pszPath = NULL;
1857 rc = RTUriFilePathEx(lstRootEntries.at(i).c_str(),
1858 RTPATH_STR_F_STYLE_UNIX, &pszPath, 0 /*cbPath*/, NULL /*pcchPath*/);
1859 if (RT_SUCCESS(rc))
1860 {
1861 pszPathCur = pszPath;
1862 pszPath = NULL; /* pszPath has ownership now. */
1863 }
1864 else if (rc == VERR_URI_NOT_FILE_SCHEME) /* Local file path? */
1865 {
1866 pszPathCur = RTStrDup(lstRootEntries.at(i).c_str());
1867 rc = VINF_SUCCESS;
1868 }
1869
1870 LogFlowFunc(("pszPathCur=%s\n", pszPathCur));
1871
1872 rc = ShClTransferValidatePath(pszPathCur, false /* fMustExist */);
1873 if (RT_FAILURE(rc))
1874 break;
1875
1876 /* No root path determined yet? */
1877 if (!pszPathRootAbs)
1878 {
1879 pszPathRootAbs = RTStrDup(pszPathCur);
1880 if (pszPathRootAbs)
1881 {
1882 RTPathStripFilename(pszPathRootAbs);
1883
1884 LogFlowFunc(("pszPathRootAbs=%s\n", pszPathRootAbs));
1885
1886 /* We don't want to have a relative directory here. */
1887 if (RTPathStartsWithRoot(pszPathRootAbs))
1888 {
1889 rc = ShClTransferValidatePath(pszPathRootAbs, true /* Path must exist */);
1890 }
1891 else
1892 rc = VERR_PATH_IS_RELATIVE;
1893 }
1894 else
1895 rc = VERR_NO_MEMORY;
1896 }
1897
1898 if (RT_SUCCESS(rc))
1899 {
1900 PSHCLLISTENTRY pEntry;
1901 rc = ShClTransferListEntryAlloc(&pEntry);
1902 if (RT_SUCCESS(rc))
1903 {
1904 PSHCLFSOBJINFO pFsObjInfo = (PSHCLFSOBJINFO)RTMemAllocZ(sizeof(SHCLFSOBJINFO));
1905 if (pFsObjInfo)
1906 {
1907 if (pTransfer->State.enmDir == SHCLTRANSFERDIR_TO_REMOTE)
1908 rc = ShClFsObjInfoQueryLocal(pszPathCur, pFsObjInfo);
1909 if (RT_SUCCESS(rc))
1910 {
1911 /* Calculate the relative path within the root path. */
1912 const char *pszPathRelToRoot = &pszPathCur[strlen(pszPathRootAbs) + 1 /* Skip terminator or (back)slash. */];
1913 if ( pszPathRelToRoot
1914 && *pszPathRelToRoot != '\0')
1915 {
1916 LogFlowFunc(("pszPathRelToRoot=%s\n", pszPathRelToRoot));
1917
1918 rc = ShClTransferListEntryInitEx(pEntry, VBOX_SHCL_INFO_F_FSOBJINFO, pszPathRelToRoot,
1919 pFsObjInfo, sizeof(SHCLFSOBJINFO));
1920 if (RT_SUCCESS(rc))
1921 {
1922 rc = ShClTransferListAddEntry(pLstRoots, pEntry, true /* fAppend */);
1923 if (RT_SUCCESS(rc))
1924 {
1925 pFsObjInfo = NULL; /* pEntry has ownership now. */
1926 }
1927 }
1928 }
1929 else
1930 LogRel(("Shared Clipboard: Unable to construct relative path for '%s' (root is '%s')\n",
1931 pszPathCur, pszPathRootAbs));
1932 }
1933
1934 if (pFsObjInfo)
1935 {
1936 RTMemFree(pFsObjInfo);
1937 pFsObjInfo = NULL;
1938 }
1939 }
1940 else
1941 rc = VERR_NO_MEMORY;
1942
1943 if (RT_FAILURE(rc))
1944 ShClTransferListEntryFree(pEntry);
1945 }
1946 }
1947
1948 RTStrFree(pszPathCur);
1949 }
1950
1951 /* No (valid) root directory found? Bail out early. */
1952 if (!pszPathRootAbs)
1953 rc = VERR_PATH_DOES_NOT_START_WITH_ROOT;
1954
1955 if (RT_SUCCESS(rc))
1956 {
1957 pTransfer->pszPathRootAbs = pszPathRootAbs;
1958 LogFlowFunc(("pszPathRootAbs=%s, cRoots=%zu\n", pTransfer->pszPathRootAbs, pTransfer->lstRoots.Hdr.cEntries));
1959
1960 LogRel2(("Shared Clipboard: Transfer uses root '%s'\n", pTransfer->pszPathRootAbs));
1961 }
1962 else
1963 {
1964 LogRel(("Shared Clipboard: Unable to set roots for transfer, rc=%Rrc\n", rc));
1965 ShClTransferListDestroy(pLstRoots);
1966 RTStrFree(pszPathRootAbs);
1967 }
1968
1969 shClTransferUnlock(pTransfer);
1970
1971 LogFlowFuncLeaveRC(rc);
1972 return rc;
1973}
1974
1975/**
1976 * Initializes the root list entries for a given clipboard transfer, UTF-16 (Unicode) version.
1977 *
1978 * @returns VBox status code.
1979 * @param pTransfer Transfer to set transfer list entries for.
1980 * @param pwszRoots Unicode string list (separated by CRLF) of root entries to set.
1981 * All entries must have the same root path.
1982 * @param cbRoots Size (in bytes) of string list. Includes zero terminator.
1983 *
1984 * @note Accepts local paths or URI string lists (absolute only).
1985 */
1986int ShClTransferRootsInitFromStringListUnicode(PSHCLTRANSFER pTransfer, PRTUTF16 pwszRoots, size_t cbRoots)
1987{
1988 AssertPtrReturn(pwszRoots, VERR_INVALID_POINTER);
1989 AssertReturn(cbRoots, VERR_INVALID_PARAMETER);
1990 AssertReturn(cbRoots % sizeof(RTUTF16) == 0, VERR_INVALID_PARAMETER);
1991
1992 size_t cwcRoots = cbRoots / sizeof(RTUTF16);
1993
1994 /* This may slightly overestimate the space needed. */
1995 size_t chDst = 0;
1996 int rc = ShClUtf16LenUtf8(pwszRoots, cwcRoots, &chDst);
1997 if (RT_SUCCESS(rc))
1998 {
1999 chDst++; /* Add space for terminator. */
2000
2001 char *pszDst = (char *)RTStrAlloc(chDst);
2002 if (pszDst)
2003 {
2004 size_t cbActual = 0;
2005 rc = ShClConvUtf16CRLFToUtf8LF(pwszRoots, cwcRoots, pszDst, chDst, &cbActual);
2006 if (RT_SUCCESS(rc))
2007 rc = ShClTransferRootsInitFromStringList(pTransfer, pszDst, cbActual + 1 /* Include terminator */);
2008
2009 RTStrFree(pszDst);
2010 }
2011 else
2012 rc = VERR_NO_MEMORY;
2013 }
2014
2015 return rc;
2016}
2017
2018/**
2019 * Initializes a single file as a transfer root.
2020 *
2021 * @returns VBox status code.
2022 * @param pTransfer Transfer to set transfer list entries for.
2023 * @param pszFile File to use as transfer root.
2024 *
2025 * @note Convenience function, uses ShClTransferRootsSet() internally.
2026 */
2027int ShClTransferRootsInitFromFile(PSHCLTRANSFER pTransfer, const char *pszFile)
2028{
2029 char *pszRoots = NULL;
2030
2031 LogFlowFuncEnter();
2032
2033 int rc = RTStrAAppend(&pszRoots, pszFile);
2034 AssertRCReturn(rc, rc);
2035 rc = RTStrAAppend(&pszRoots, "\r\n");
2036 AssertRCReturn(rc, rc);
2037 rc = ShClTransferRootsInitFromStringList(pTransfer, pszRoots, strlen(pszRoots) + 1 /* Include terminator */);
2038 RTStrFree(pszRoots);
2039 return rc;
2040}
2041
2042/**
2043 * Returns the clipboard transfer's ID.
2044 *
2045 * @returns The transfer's ID.
2046 * @param pTransfer Clipboard transfer to return ID for.
2047 */
2048SHCLTRANSFERID ShClTransferGetID(PSHCLTRANSFER pTransfer)
2049{
2050 AssertPtrReturn(pTransfer, 0);
2051
2052 shClTransferLock(pTransfer);
2053
2054 SHCLTRANSFERID const uID = pTransfer->State.uID;
2055
2056 shClTransferUnlock(pTransfer);
2057
2058 return uID;
2059}
2060
2061/**
2062 * Returns the clipboard transfer's direction.
2063 *
2064 * @returns The transfer's direction.
2065 * @param pTransfer Clipboard transfer to return direction for.
2066 */
2067SHCLTRANSFERDIR ShClTransferGetDir(PSHCLTRANSFER pTransfer)
2068{
2069 AssertPtrReturn(pTransfer, SHCLTRANSFERDIR_UNKNOWN);
2070
2071 shClTransferLock(pTransfer);
2072
2073 SHCLTRANSFERDIR const enmDir = pTransfer->State.enmDir;
2074
2075 shClTransferUnlock(pTransfer);
2076
2077 return enmDir;
2078}
2079
2080/**
2081 * Returns the absolute root path of a transfer.
2082 *
2083 * @returns VBox status code.
2084 * @param pTransfer Clipboard transfer to return absolute root path for.
2085 * @param pszPath Where to store the returned path.
2086 * @param cbPath Size (in bytes) of \a pszPath.
2087 */
2088int ShClTransferGetRootPathAbs(PSHCLTRANSFER pTransfer, char *pszPath, size_t cbPath)
2089{
2090 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2091
2092 shClTransferLock(pTransfer);
2093
2094 AssertMsgReturn(pTransfer->pszPathRootAbs, ("Transfer has no root path set (yet)\n"), VERR_WRONG_ORDER);
2095
2096 int const rc = RTStrCopy(pszPath, cbPath, pTransfer->pszPathRootAbs);
2097
2098 shClTransferUnlock(pTransfer);
2099
2100 return rc;
2101}
2102
2103/**
2104 * Returns the transfer's source.
2105 *
2106 * @returns The transfer's source.
2107 * @param pTransfer Clipboard transfer to return source for.
2108 */
2109SHCLSOURCE ShClTransferGetSource(PSHCLTRANSFER pTransfer)
2110{
2111 AssertPtrReturn(pTransfer, SHCLSOURCE_INVALID);
2112
2113 shClTransferLock(pTransfer);
2114
2115 SHCLSOURCE const enmSource = pTransfer->State.enmSource;
2116
2117 shClTransferUnlock(pTransfer);
2118
2119 return enmSource;
2120}
2121
2122/**
2123 * Returns the current transfer status.
2124 *
2125 * @returns Current transfer status.
2126 * @param pTransfer Clipboard transfer to return status for.
2127 *
2128 * @note Caller needs to take critical section.
2129 */
2130DECLINLINE(SHCLTRANSFERSTATUS) shClTransferGetStatusLocked(PSHCLTRANSFER pTransfer)
2131{
2132 Assert(RTCritSectIsOwner(&pTransfer->CritSect));
2133
2134 shClTransferLock(pTransfer);
2135
2136 SHCLTRANSFERSTATUS const enmStatus = pTransfer->State.enmStatus;
2137
2138 shClTransferUnlock(pTransfer);
2139
2140 return enmStatus;
2141}
2142
2143/**
2144 * Returns the current transfer status.
2145 *
2146 * @returns Current transfer status.
2147 * @param pTransfer Clipboard transfer to return status for.
2148 */
2149SHCLTRANSFERSTATUS ShClTransferGetStatus(PSHCLTRANSFER pTransfer)
2150{
2151 AssertPtrReturn(pTransfer, SHCLTRANSFERSTATUS_NONE);
2152
2153 shClTransferLock(pTransfer);
2154
2155 SHCLTRANSFERSTATUS const enmSts = shClTransferGetStatusLocked(pTransfer);
2156
2157 shClTransferUnlock(pTransfer);
2158
2159 return enmSts;
2160}
2161
2162/**
2163 * Runs a started clipboard transfer in a dedicated thread.
2164 *
2165 * @returns VBox status code.
2166 * @param pTransfer Clipboard transfer to run.
2167 * @param pfnThreadFunc Pointer to thread function to use.
2168 * @param pvUser Pointer to user-provided data. Optional.
2169 */
2170int ShClTransferRun(PSHCLTRANSFER pTransfer, PFNSHCLTRANSFERTHREAD pfnThreadFunc, void *pvUser)
2171{
2172 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2173 AssertPtrReturn(pfnThreadFunc, VERR_INVALID_POINTER);
2174 /* pvUser is optional. */
2175
2176 AssertMsgReturn(pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_STARTED,
2177 ("Wrong status (currently is %s)\n", ShClTransferStatusToStr(pTransfer->State.enmStatus)),
2178 VERR_WRONG_ORDER);
2179
2180 int rc = shClTransferThreadCreate(pTransfer, pfnThreadFunc, pvUser);
2181
2182 LogFlowFuncLeaveRC(rc);
2183 return rc;
2184}
2185
2186/**
2187 * Starts an initialized transfer.
2188 *
2189 * @returns VBox status code.
2190 * @param pTransfer Clipboard transfer to start.
2191 */
2192int ShClTransferStart(PSHCLTRANSFER pTransfer)
2193{
2194 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2195
2196 LogFlowFuncEnter();
2197
2198 shClTransferLock(pTransfer);
2199
2200 /* Ready to start? */
2201 AssertMsgReturnStmt(pTransfer->ProviderIface.pfnRootListRead != NULL,
2202 ("No provider interface set (yet)\n"),
2203 shClTransferUnlock(pTransfer), VERR_WRONG_ORDER);
2204 AssertMsgReturnStmt(pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_INITIALIZED,
2205 ("Wrong status (currently is %s)\n", ShClTransferStatusToStr(pTransfer->State.enmStatus)),
2206 shClTransferUnlock(pTransfer), VERR_WRONG_ORDER);
2207
2208 int rc = shClTransferSetStatus(pTransfer, SHCLTRANSFERSTATUS_STARTED);
2209
2210 shClTransferUnlock(pTransfer);
2211
2212 if (pTransfer->Callbacks.pfnOnStarted)
2213 pTransfer->Callbacks.pfnOnStarted(&pTransfer->CallbackCtx);
2214
2215 LogFlowFuncLeaveRC(rc);
2216 return rc;
2217}
2218
2219/**
2220 * Stops a started transfer.
2221 *
2222 * @returns VBox status code.
2223 * @param pTransfer Clipboard transfer to stop.
2224 */
2225int ShClTransferStop(PSHCLTRANSFER pTransfer)
2226{
2227 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2228
2229 LogFlowFuncEnter();
2230
2231 int rc = shClTransferThreadDestroy(pTransfer, SHCL_TIMEOUT_DEFAULT_MS);
2232
2233 LogFlowFuncLeaveRC(rc);
2234 return rc;
2235}
2236
2237/**
2238 * Completes a transfer (as successful).
2239 *
2240 * @returns VBox status code.
2241 * @param pTransfer Clipboard transfer to complete.
2242 */
2243int ShClTransferComplete(PSHCLTRANSFER pTransfer)
2244{
2245 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2246
2247 LogFlowFuncEnter();
2248
2249 shClTransferLock(pTransfer);
2250
2251 AssertMsgReturnStmt( pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_INITIALIZED
2252 || pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_STARTED,
2253 ("Wrong status (currently is %s)\n", ShClTransferStatusToStr(pTransfer->State.enmStatus)),
2254 shClTransferUnlock(pTransfer), VERR_WRONG_ORDER);
2255
2256 int rc = shClTransferSetStatus(pTransfer, SHCLTRANSFERSTATUS_COMPLETED);
2257
2258 shClTransferUnlock(pTransfer);
2259
2260 if (pTransfer->Callbacks.pfnOnCompleted)
2261 pTransfer->Callbacks.pfnOnCompleted(&pTransfer->CallbackCtx, rc);
2262
2263 LogFlowFuncLeaveRC(rc);
2264 return rc;
2265}
2266
2267/**
2268 * Cancels or sets an error for a transfer.
2269 *
2270 * @returns VBox status code.
2271 * @param pTransfer Clipboard transfer to cancel or set error for.
2272 * @param rc Error code to set.
2273 * If set to VERR_CANCELLED, the transfer will be canceled.
2274 */
2275static int shClTransferCancelOrError(PSHCLTRANSFER pTransfer, int rc)
2276{
2277 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2278
2279 LogFlowFunc(("%Rrc\n", rc));
2280
2281 shClTransferLock(pTransfer);
2282
2283 int rc2;
2284
2285 if ( pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_INITIALIZED
2286 || pTransfer->State.enmStatus == SHCLTRANSFERSTATUS_STARTED)
2287 {
2288 if (rc == VERR_CANCELLED)
2289 {
2290 rc2 = shClTransferSetStatus(pTransfer, SHCLTRANSFERSTATUS_CANCELED);
2291
2292 if (pTransfer->Callbacks.pfnOnCompleted)
2293 pTransfer->Callbacks.pfnOnCompleted(&pTransfer->CallbackCtx, VERR_CANCELLED);
2294 }
2295 else
2296 {
2297 rc2 = shClTransferSetStatus(pTransfer, SHCLTRANSFERSTATUS_ERROR);
2298
2299 if (pTransfer->Callbacks.pfnOnError)
2300 pTransfer->Callbacks.pfnOnError(&pTransfer->CallbackCtx, rc);
2301 }
2302 }
2303 else /* Nothing to do. */
2304 rc2 = VINF_SUCCESS;
2305
2306 shClTransferUnlock(pTransfer);
2307
2308 LogFlowFuncLeaveRC(rc2);
2309 return rc2;
2310}
2311
2312/**
2313 * Cancels a transfer.
2314 *
2315 * @returns VBox status code.
2316 * @param pTransfer Clipboard transfer to cancel.
2317 */
2318int ShClTransferCancel(PSHCLTRANSFER pTransfer)
2319{
2320 return shClTransferCancelOrError(pTransfer, VERR_CANCELLED);
2321}
2322
2323/**
2324 * Kills a transfer.
2325 *
2326 * Currently cancels it internally.
2327 *
2328 * @returns VBox status code.
2329 * @param pTransfer Clipboard transfer to kill.
2330 */
2331int ShClTransferKill(PSHCLTRANSFER pTransfer)
2332{
2333 return ShClTransferCancel(pTransfer);
2334}
2335
2336/**
2337 * Sets an error for a transfer.
2338 *
2339 * @returns VBox status code.
2340 * @param pTransfer Clipboard transfer to set error for.
2341 * @param rc Error code to set.
2342 */
2343int ShClTransferError(PSHCLTRANSFER pTransfer, int rc)
2344{
2345 return shClTransferCancelOrError(pTransfer, rc);
2346}
2347
2348/**
2349 * Internal struct for keeping a transfer thread context.
2350 */
2351typedef struct _SHCLTRANSFERTHREADCTX
2352{
2353 /** Pointer to transfer. */
2354 PSHCLTRANSFER pTransfer;
2355 /** User-supplied context data. Can be NULL if not being used. */
2356 void *pvUser;
2357 /** Pointer to thread function to use. */
2358 PFNSHCLTRANSFERTHREAD pfnThread;
2359} SHCLTRANSFERTHREADCTX;
2360/** Pointer to internal struct for keeping a transfer thread context. */
2361typedef SHCLTRANSFERTHREADCTX *PSHCLTRANSFERTHREADCTX;
2362
2363/**
2364 * Worker thread for a transfer.
2365 *
2366 * @returns VBox status code.
2367 * @param ThreadSelf Thread self handle. Not being used.
2368 * @param pvUser Context data of type PSHCLTRANSFERTHREADCTX.
2369 */
2370static DECLCALLBACK(int) shClTransferThreadWorker(RTTHREAD ThreadSelf, void *pvUser)
2371{
2372 RT_NOREF(ThreadSelf);
2373
2374 LogFlowFuncEnter();
2375
2376 SHCLTRANSFERTHREADCTX Ctx;
2377 memcpy(&Ctx, pvUser, sizeof(SHCLTRANSFERTHREADCTX));
2378
2379 LogFlowFunc(("pfnThread=%p, pTransfer=%p, pvUser=%p\n", Ctx.pfnThread, Ctx.pTransfer, Ctx.pvUser));
2380
2381 PSHCLTRANSFER pTransfer = Ctx.pTransfer;
2382
2383 shClTransferLock(pTransfer);
2384
2385 pTransfer->Thread.fStarted = true;
2386 pTransfer->Thread.fStop = false;
2387
2388 shClTransferUnlock(pTransfer);
2389
2390 RTThreadUserSignal(RTThreadSelf());
2391
2392 int rc = Ctx.pfnThread(pTransfer, Ctx.pvUser);
2393
2394 if (pTransfer->Callbacks.pfnOnCompleted)
2395 pTransfer->Callbacks.pfnOnCompleted(&pTransfer->CallbackCtx, rc);
2396
2397 LogFlowFuncLeaveRC(rc);
2398 return rc;
2399}
2400
2401/**
2402 * Creates a thread for a clipboard transfer.
2403 *
2404 * @returns VBox status code.
2405 * @param pTransfer Clipboard transfer to create thread for.
2406 * @param pfnThreadFunc Thread function to use for this transfer.
2407 * @param pvUser Pointer to user-provided data.
2408 */
2409static int shClTransferThreadCreate(PSHCLTRANSFER pTransfer, PFNSHCLTRANSFERTHREAD pfnThreadFunc, void *pvUser)
2410
2411{
2412 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2413
2414 shClTransferLock(pTransfer);
2415
2416 /* Already marked for stopping? */
2417 AssertMsgReturn(pTransfer->Thread.fStop == false,
2418 ("Transfer thread already marked for stopping"), VERR_WRONG_ORDER);
2419 /* Already started? */
2420 AssertMsgReturn(pTransfer->Thread.fStarted == false,
2421 ("Transfer thread already started"), VERR_WRONG_ORDER);
2422
2423 SHCLTRANSFERTHREADCTX Ctx = { pTransfer, pvUser, pfnThreadFunc };
2424
2425 /* Spawn a worker thread, so that we don't block the window thread for too long. */
2426 int rc = RTThreadCreate(&pTransfer->Thread.hThread, shClTransferThreadWorker,
2427 &Ctx, 0, RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE,
2428 "shcltx");
2429 if (RT_SUCCESS(rc))
2430 {
2431 shClTransferUnlock(pTransfer); /* Leave lock while waiting. */
2432
2433 int rc2 = RTThreadUserWait(pTransfer->Thread.hThread, SHCL_TIMEOUT_DEFAULT_MS);
2434 AssertRC(rc2);
2435
2436 shClTransferLock(pTransfer);
2437
2438 if (pTransfer->Thread.fStarted) /* Did the thread indicate that it started correctly? */
2439 {
2440 /* Nothing to do in here. */
2441 }
2442 else
2443 rc = VERR_GENERAL_FAILURE; /** @todo Find a better rc. */
2444 }
2445
2446 shClTransferUnlock(pTransfer);
2447
2448 LogFlowFuncLeaveRC(rc);
2449 return rc;
2450}
2451
2452/**
2453 * Destroys the thread of a clipboard transfer.
2454 *
2455 * @returns VBox status code. Will return thread rc.
2456 * @param pTransfer Clipboard transfer to destroy thread for.
2457 * @param uTimeoutMs Timeout (in ms) to wait for thread destruction.
2458 */
2459static int shClTransferThreadDestroy(PSHCLTRANSFER pTransfer, RTMSINTERVAL uTimeoutMs)
2460{
2461 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2462
2463 shClTransferLock(pTransfer);
2464
2465 if (!pTransfer->Thread.fStarted)
2466 {
2467 shClTransferUnlock(pTransfer);
2468 return VINF_SUCCESS;
2469 }
2470
2471 LogFlowFuncEnter();
2472
2473 /* Set stop indicator. */
2474 pTransfer->Thread.fStop = true;
2475
2476 shClTransferUnlock(pTransfer); /* Leave lock while waiting. */
2477
2478 int rcThread = VERR_IPE_UNINITIALIZED_STATUS;
2479 Assert(pTransfer->Thread.hThread != NIL_RTTHREAD);
2480 int rc = RTThreadWait(pTransfer->Thread.hThread, uTimeoutMs, &rcThread);
2481
2482 LogFlowFunc(("Waiting for thread resulted in %Rrc (thread exited with %Rrc)\n", rc, rcThread));
2483
2484 if (RT_SUCCESS(rc))
2485 {
2486 pTransfer->Thread.fStarted = false;
2487 pTransfer->Thread.hThread = NIL_RTTHREAD;
2488
2489 rc = rcThread; /* Return the thread rc to the caller. */
2490 }
2491 else
2492 LogRel(("Shared Clipboard: Waiting for thread of transfer %RU16 failed with %Rrc\n", pTransfer->State.uID, rc));
2493
2494 LogFlowFuncLeaveRC(rc);
2495 return rc;
2496}
2497
2498/**
2499 * Waits for the transfer status to change, internal version.
2500 *
2501 * @returns VBox status code.
2502 * @param pTransfer Clipboard transfer to wait for.
2503 * @param msTimeout Timeout (in ms) to wait.
2504 * @param penmStatus Where to return the new (current) transfer status on success.
2505 * Optional and can be NULL.
2506 */
2507static int shClTransferWaitForStatusChangeInternal(PSHCLTRANSFER pTransfer, RTMSINTERVAL msTimeout, SHCLTRANSFERSTATUS *penmStatus)
2508{
2509 LogFlowFunc(("Waiting for status change (%RU32 timeout) ...\n", msTimeout));
2510
2511 int rc = RTSemEventWait(pTransfer->StatusChangeEvent, msTimeout);
2512 if (RT_SUCCESS(rc))
2513 {
2514 if (penmStatus)
2515 {
2516 shClTransferLock(pTransfer);
2517
2518 *penmStatus = pTransfer->State.enmStatus;
2519
2520 shClTransferUnlock(pTransfer);
2521 }
2522 }
2523
2524 return rc;
2525}
2526
2527/**
2528 * Waits for the transfer status to change.
2529 *
2530 * @returns VBox status code.
2531 * @param pTransfer Clipboard transfer to wait for.
2532 * @param msTimeout Timeout (in ms) to wait.
2533 * @param penmStatus Where to return the new (current) transfer status on success.
2534 * Optional and can be NULL.
2535 */
2536int ShClTransferWaitForStatusChange(PSHCLTRANSFER pTransfer, RTMSINTERVAL msTimeout, SHCLTRANSFERSTATUS *penmStatus)
2537{
2538 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2539
2540 int rc = shClTransferWaitForStatusChangeInternal(pTransfer, msTimeout, penmStatus);
2541
2542 LogFlowFuncLeaveRC(rc);
2543 return rc;
2544}
2545
2546/**
2547 * Waits for a specific transfer status.
2548 *
2549 * @returns VBox status code.
2550 * @param pTransfer Clipboard transfer to wait for.
2551 * @param msTimeout Timeout (in ms) to wait.
2552 * @param enmStatus Transfer status to wait for.
2553 */
2554int ShClTransferWaitForStatus(PSHCLTRANSFER pTransfer, RTMSINTERVAL msTimeout, SHCLTRANSFERSTATUS enmStatus)
2555{
2556 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2557
2558 int rc = VINF_SUCCESS;
2559
2560 uint64_t const tsStartMs = RTTimeMilliTS();
2561 uint64_t msLeft = msTimeout;
2562 for (;;)
2563 {
2564 SHCLTRANSFERSTATUS enmCurStatus;
2565 rc = shClTransferWaitForStatusChangeInternal(pTransfer, msLeft, &enmCurStatus);
2566 if (RT_FAILURE(rc))
2567 break;
2568
2569 if (enmCurStatus == enmStatus)
2570 break;
2571
2572 msLeft -= RT_MIN(msLeft, RTTimeMilliTS() - tsStartMs);
2573 if (msLeft == 0)
2574 {
2575 rc = VERR_TIMEOUT;
2576 break;
2577 }
2578 }
2579
2580 LogFlowFuncLeaveRC(rc);
2581 return rc;
2582}
2583
2584
2585/*********************************************************************************************************************************
2586 * Transfer Context *
2587 ********************************************************************************************************************************/
2588
2589/**
2590 * Locks a transfer context.
2591 *
2592 * @param pTransferCtx Transfer context to lock.
2593 */
2594DECLINLINE(void) shClTransferCtxLock(PSHCLTRANSFERCTX pTransferCtx)
2595{
2596 int rc2 = RTCritSectEnter(&pTransferCtx->CritSect);
2597 AssertRC(rc2);
2598}
2599
2600/**
2601 * Unlocks a transfer context.
2602 *
2603 * @param pTransferCtx Transfer context to unlock.
2604 */
2605DECLINLINE(void) shClTransferCtxUnlock(PSHCLTRANSFERCTX pTransferCtx)
2606{
2607 int rc2 = RTCritSectLeave(&pTransferCtx->CritSect);
2608 AssertRC(rc2);
2609}
2610
2611/**
2612 * Initializes a clipboard transfer context.
2613 *
2614 * @returns VBox status code.
2615 * @param pTransferCtx Transfer context to initialize.
2616 */
2617int ShClTransferCtxInit(PSHCLTRANSFERCTX pTransferCtx)
2618{
2619 AssertPtrReturn(pTransferCtx, VERR_INVALID_POINTER);
2620
2621 LogFlowFunc(("pTransferCtx=%p\n", pTransferCtx));
2622
2623 int rc = RTCritSectInit(&pTransferCtx->CritSect);
2624 if (RT_SUCCESS(rc))
2625 {
2626 rc = RTSemEventCreate(&pTransferCtx->ChangedEvent);
2627 if (RT_SUCCESS(rc))
2628 {
2629 RT_ZERO(pTransferCtx->ChangedEventData);
2630
2631 RTListInit(&pTransferCtx->List);
2632
2633 pTransferCtx->cTransfers = 0;
2634 pTransferCtx->cRunning = 0;
2635 pTransferCtx->cMaxRunning = 64; /** @todo Make this configurable? */
2636
2637 RT_ZERO(pTransferCtx->bmTransferIds);
2638
2639 ShClTransferCtxReset(pTransferCtx);
2640 }
2641 }
2642
2643 return VINF_SUCCESS;
2644}
2645
2646/**
2647 * Destroys a clipboard transfer context.
2648 *
2649 * @param pTransferCtx Transfer context to destroy.
2650 */
2651void ShClTransferCtxDestroy(PSHCLTRANSFERCTX pTransferCtx)
2652{
2653 if (!pTransferCtx)
2654 return;
2655
2656 LogFlowFunc(("pTransferCtx=%p\n", pTransferCtx));
2657
2658 shClTransferCtxLock(pTransferCtx);
2659
2660 PSHCLTRANSFER pTransfer, pTransferNext;
2661 RTListForEachSafe(&pTransferCtx->List, pTransfer, pTransferNext, SHCLTRANSFER, Node)
2662 {
2663 ShClTransferDestroy(pTransfer);
2664
2665 shclTransferCtxTransferRemoveAndUnregister(pTransferCtx, pTransfer);
2666
2667 RTMemFree(pTransfer);
2668 pTransfer = NULL;
2669 }
2670
2671 pTransferCtx->cRunning = 0;
2672 pTransferCtx->cTransfers = 0;
2673
2674 shClTransferCtxUnlock(pTransferCtx);
2675
2676 RTSemEventDestroy(pTransferCtx->ChangedEvent);
2677 pTransferCtx->ChangedEvent = NIL_RTSEMEVENT;
2678
2679 if (RTCritSectIsInitialized(&pTransferCtx->CritSect))
2680 RTCritSectDelete(&pTransferCtx->CritSect);
2681}
2682
2683/**
2684 * Resets a clipboard transfer context.
2685 *
2686 * @param pTransferCtx Transfer context to reset.
2687 */
2688void ShClTransferCtxReset(PSHCLTRANSFERCTX pTransferCtx)
2689{
2690 AssertPtrReturnVoid(pTransferCtx);
2691
2692 shClTransferCtxLock(pTransferCtx);
2693
2694 LogFlowFuncEnter();
2695
2696 PSHCLTRANSFER pTransfer;
2697 RTListForEach(&pTransferCtx->List, pTransfer, SHCLTRANSFER, Node)
2698 ShClTransferReset(pTransfer);
2699
2700#ifdef VBOX_WITH_SHARED_CLIPBOARD_TRANSFERS_HTTP
2701 /** @todo Anything to do here? */
2702#endif
2703
2704 shClTransferCtxUnlock(pTransferCtx);
2705}
2706
2707/**
2708 * Signals a change event.
2709 *
2710 * @returns VBox status code.
2711 * @param pTransferCtx Transfer context to return transfer for.
2712 * @param fRegistered Whether a transfer got registered or unregistered.
2713 * @param pTransfer Transfer bound to the event.
2714 */
2715static int shClTransferCtxSignal(PSHCLTRANSFERCTX pTransferCtx, bool fRegistered, PSHCLTRANSFER pTransfer)
2716{
2717 Assert(RTCritSectIsOwner(&pTransferCtx->CritSect));
2718
2719 LogFlowFunc(("fRegistered=%RTbool, pTransfer=%p\n", fRegistered, pTransfer));
2720
2721 pTransferCtx->ChangedEventData.fRegistered = fRegistered;
2722 pTransferCtx->ChangedEventData.pTransfer = pTransfer;
2723
2724 return RTSemEventSignal(pTransferCtx->ChangedEvent);
2725}
2726
2727/**
2728 * Returns a specific clipboard transfer, internal version.
2729 *
2730 * @returns Clipboard transfer found, or NULL if not found.
2731 * @param pTransferCtx Transfer context to return transfer for.
2732 * @param idTransfer ID of the transfer to return.
2733 *
2734 * @note Caller needs to take critical section.
2735 */
2736static PSHCLTRANSFER shClTransferCtxGetTransferByIdInternal(PSHCLTRANSFERCTX pTransferCtx, SHCLTRANSFERID idTransfer)
2737{
2738 Assert(RTCritSectIsOwner(&pTransferCtx->CritSect));
2739
2740 PSHCLTRANSFER pTransfer;
2741 RTListForEach(&pTransferCtx->List, pTransfer, SHCLTRANSFER, Node) /** @todo Slow, but works for now. */
2742 {
2743 if (pTransfer->State.uID == idTransfer)
2744 return pTransfer;
2745 }
2746
2747 return NULL;
2748}
2749
2750/**
2751 * Returns a specific clipboard transfer by index, internal version.
2752 *
2753 * @returns Clipboard transfer found, or NULL if not found.
2754 * @param pTransferCtx Transfer context to return transfer for.
2755 * @param uIdx Index of the transfer to return.
2756 *
2757 * @note Caller needs to take critical section.
2758 */
2759static PSHCLTRANSFER shClTransferCtxGetTransferByIndexInternal(PSHCLTRANSFERCTX pTransferCtx, uint32_t uIdx)
2760{
2761 Assert(RTCritSectIsOwner(&pTransferCtx->CritSect));
2762
2763 uint32_t idx = 0;
2764
2765 PSHCLTRANSFER pTransfer;
2766 RTListForEach(&pTransferCtx->List, pTransfer, SHCLTRANSFER, Node) /** @todo Slow, but works for now. */
2767 {
2768 if (uIdx == idx)
2769 return pTransfer;
2770 idx++;
2771 }
2772
2773 return NULL;
2774}
2775
2776/**
2777 * Returns a clipboard transfer for a specific transfer ID.
2778 *
2779 * @returns Clipboard transfer found, or NULL if not found.
2780 * @param pTransferCtx Transfer context to return transfer for.
2781 * @param uID ID of the transfer to return.
2782 */
2783PSHCLTRANSFER ShClTransferCtxGetTransferById(PSHCLTRANSFERCTX pTransferCtx, uint32_t uID)
2784{
2785 shClTransferCtxLock(pTransferCtx);
2786
2787 PSHCLTRANSFER const pTransfer = shClTransferCtxGetTransferByIdInternal(pTransferCtx, uID);
2788
2789 shClTransferCtxUnlock(pTransferCtx);
2790
2791 return pTransfer;
2792}
2793
2794/**
2795 * Returns a clipboard transfer for a specific list index.
2796 *
2797 * @returns Clipboard transfer found, or NULL if not found.
2798 * @param pTransferCtx Transfer context to return transfer for.
2799 * @param uIdx List index of the transfer to return.
2800 */
2801PSHCLTRANSFER ShClTransferCtxGetTransferByIndex(PSHCLTRANSFERCTX pTransferCtx, uint32_t uIdx)
2802{
2803 shClTransferCtxLock(pTransferCtx);
2804
2805 PSHCLTRANSFER const pTransfer = shClTransferCtxGetTransferByIndexInternal(pTransferCtx, uIdx);
2806
2807 shClTransferCtxUnlock(pTransferCtx);
2808
2809 return pTransfer;
2810}
2811
2812
2813/**
2814 * Returns the last clipboard transfer registered.
2815 *
2816 * @returns Clipboard transfer found, or NULL if not found.
2817 * @param pTransferCtx Transfer context to return transfer for.
2818 */
2819PSHCLTRANSFER ShClTransferCtxGetTransferLast(PSHCLTRANSFERCTX pTransferCtx)
2820{
2821 shClTransferCtxLock(pTransferCtx);
2822
2823 PSHCLTRANSFER const pTransfer = RTListGetLast(&pTransferCtx->List, SHCLTRANSFER, Node);
2824
2825 shClTransferCtxUnlock(pTransferCtx);
2826
2827 return pTransfer;
2828}
2829
2830/**
2831 * Returns the number of running clipboard transfers for a given transfer context.
2832 *
2833 * @returns Number of running transfers.
2834 * @param pTransferCtx Transfer context to return number for.
2835 */
2836uint32_t ShClTransferCtxGetRunningTransfers(PSHCLTRANSFERCTX pTransferCtx)
2837{
2838 AssertPtrReturn(pTransferCtx, 0);
2839
2840 shClTransferCtxLock(pTransferCtx);
2841
2842 uint32_t const cRunning = pTransferCtx->cRunning;
2843
2844 shClTransferCtxUnlock(pTransferCtx);
2845
2846 return cRunning;
2847}
2848
2849/**
2850 * Returns the number of total clipboard transfers for a given transfer context.
2851 *
2852 * @returns Number of total transfers.
2853 * @param pTransferCtx Transfer context to return number for.
2854 */
2855uint32_t ShClTransferCtxGetTotalTransfers(PSHCLTRANSFERCTX pTransferCtx)
2856{
2857 AssertPtrReturn(pTransferCtx, 0);
2858
2859 shClTransferCtxLock(pTransferCtx);
2860
2861 uint32_t const cTransfers = pTransferCtx->cTransfers;
2862
2863 shClTransferCtxUnlock(pTransferCtx);
2864
2865 return cTransfers;
2866}
2867
2868static int shClTransferCreateIDInternal(PSHCLTRANSFERCTX pTransferCtx, SHCLTRANSFERID *pidTransfer)
2869{
2870 /*
2871 * Pick a random bit as starting point. If it's in use, search forward
2872 * for a free one, wrapping around. We've reserved both the zero'th and
2873 * max-1 IDs.
2874 */
2875 SHCLTRANSFERID idTransfer = RTRandU32Ex(1, VBOX_SHCL_MAX_TRANSFERS - 2);
2876
2877 if (!ASMBitTestAndSet(&pTransferCtx->bmTransferIds[0], idTransfer))
2878 { /* likely */ }
2879 else if (pTransferCtx->cTransfers < VBOX_SHCL_MAX_TRANSFERS - 2 /* First and last are not used */)
2880 {
2881 /* Forward search. */
2882 int iHit = ASMBitNextClear(&pTransferCtx->bmTransferIds[0], VBOX_SHCL_MAX_TRANSFERS, idTransfer);
2883 if (iHit < 0)
2884 iHit = ASMBitFirstClear(&pTransferCtx->bmTransferIds[0], VBOX_SHCL_MAX_TRANSFERS);
2885 AssertLogRelMsgReturn(iHit >= 0, ("Transfer count: %RU16\n", pTransferCtx->cTransfers), VERR_SHCLPB_MAX_TRANSFERS_REACHED);
2886 idTransfer = iHit;
2887 AssertLogRelMsgReturn(!ASMBitTestAndSet(&pTransferCtx->bmTransferIds[0], idTransfer), ("idObject=%#x\n", idTransfer), VERR_INTERNAL_ERROR_2);
2888 }
2889 else
2890 {
2891 LogFunc(("Maximum number of transfers reached (%RU16 transfers)\n", pTransferCtx->cTransfers));
2892 return VERR_SHCLPB_MAX_TRANSFERS_REACHED;
2893 }
2894
2895 *pidTransfer = idTransfer;
2896
2897 return VINF_SUCCESS;
2898}
2899
2900/**
2901 * Creates a new transfer ID for a given transfer context.
2902 *
2903 * @returns VBox status code.
2904 * @retval VERR_SHCLPB_MAX_TRANSFERS_REACHED if the maximum of concurrent transfers is reached.
2905 * @param pTransferCtx Transfer context to create transfer ID for.
2906 * @param pidTransfer Where to return the transfer ID on success.
2907 */
2908int ShClTransferCtxCreateId(PSHCLTRANSFERCTX pTransferCtx, PSHCLTRANSFERID pidTransfer)
2909{
2910 AssertPtrReturn(pTransferCtx, VERR_INVALID_POINTER);
2911 AssertPtrReturn(pidTransfer, VERR_INVALID_POINTER);
2912
2913 shClTransferCtxLock(pTransferCtx);
2914
2915 int rc = shClTransferCreateIDInternal(pTransferCtx, pidTransfer);
2916
2917 shClTransferCtxUnlock(pTransferCtx);
2918
2919 return rc;
2920}
2921
2922/**
2923 * Registers a clipboard transfer with a new transfer ID.
2924 *
2925 * @return VBox status code.
2926 * @retval VERR_SHCLPB_MAX_TRANSFERS_REACHED if the maximum of concurrent transfers is reached.
2927 * @param pTransferCtx Transfer context to register transfer to.
2928 * @param pTransfer Transfer to register. The context takes ownership of the transfer on success.
2929 * @param idTransfer Transfer ID to use for registering the given transfer.
2930 */
2931static int shClTransferCtxTransferRegisterExInternal(PSHCLTRANSFERCTX pTransferCtx, PSHCLTRANSFER pTransfer, SHCLTRANSFERID idTransfer)
2932{
2933 AssertPtrReturn(pTransferCtx, VERR_INVALID_POINTER);
2934 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2935 Assert(idTransfer != NIL_SHCLTRANSFERID);
2936
2937 shClTransferCtxLock(pTransferCtx);
2938
2939 pTransfer->State.uID = idTransfer;
2940
2941 RTListAppend(&pTransferCtx->List, &pTransfer->Node);
2942
2943 pTransferCtx->cTransfers++;
2944
2945 Log2Func(("pTransfer=%p, idTransfer=%RU32 -- now %RU16 transfer(s)\n", pTransfer, idTransfer, pTransferCtx->cTransfers));
2946
2947 shClTransferCtxUnlock(pTransferCtx);
2948
2949 if (pTransfer->Callbacks.pfnOnRegistered)
2950 pTransfer->Callbacks.pfnOnRegistered(&pTransfer->CallbackCtx, pTransferCtx);
2951
2952 LogFlowFuncLeaveRC(VINF_SUCCESS);
2953 return VINF_SUCCESS;
2954}
2955
2956/**
2957 * Registers a clipboard transfer with a transfer context, i.e. allocates a transfer ID.
2958 *
2959 * @return VBox status code.
2960 * @retval VERR_SHCLPB_MAX_TRANSFERS_REACHED if the maximum of concurrent transfers for this context has been reached.
2961 * @param pTransferCtx Transfer context to register transfer to.
2962 * @param pTransfer Transfer to register. The context takes ownership of the transfer on success.
2963 * @param pidTransfer Where to return the transfer ID on success. Optional.
2964 */
2965int ShClTransferCtxRegister(PSHCLTRANSFERCTX pTransferCtx, PSHCLTRANSFER pTransfer, PSHCLTRANSFERID pidTransfer)
2966{
2967 AssertPtrReturn(pTransferCtx, VERR_INVALID_POINTER);
2968 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
2969
2970 shClTransferCtxLock(pTransferCtx);
2971
2972 SHCLTRANSFERID idTransfer;
2973 int rc = shClTransferCreateIDInternal(pTransferCtx, &idTransfer);
2974 if (RT_SUCCESS(rc))
2975 {
2976 rc = shClTransferCtxTransferRegisterExInternal(pTransferCtx, pTransfer, idTransfer);
2977 if (RT_SUCCESS(rc))
2978 {
2979 if (pidTransfer)
2980 *pidTransfer = idTransfer;
2981 }
2982 }
2983
2984 shClTransferCtxUnlock(pTransferCtx);
2985
2986 return rc;
2987}
2988
2989/**
2990 * Registers a clipboard transfer with a transfer context by specifying an ID for the transfer.
2991 *
2992 * @return VBox status code.
2993 * @retval VERR_ALREADY_EXISTS if a transfer with the given ID already exists.
2994 * @retval VERR_SHCLPB_MAX_TRANSFERS_REACHED if the maximum of concurrent transfers for this context has been reached.
2995 * @param pTransferCtx Transfer context to register transfer to.
2996 * @param pTransfer Transfer to register.
2997 * @param idTransfer Transfer ID to use for registration.
2998 *
2999 * @note This function ASSUMES you have created \a idTransfer with ShClTransferCtxCreateId().
3000 */
3001int ShClTransferCtxRegisterById(PSHCLTRANSFERCTX pTransferCtx, PSHCLTRANSFER pTransfer, SHCLTRANSFERID idTransfer)
3002{
3003 shClTransferCtxLock(pTransferCtx);
3004
3005 if (pTransferCtx->cTransfers < VBOX_SHCL_MAX_TRANSFERS - 2 /* First and last are not used */)
3006 {
3007 RTListAppend(&pTransferCtx->List, &pTransfer->Node);
3008
3009 shClTransferLock(pTransfer);
3010
3011 pTransfer->State.uID = idTransfer;
3012
3013 shClTransferUnlock(pTransfer);
3014
3015 int rc = shClTransferCtxSignal(pTransferCtx, true /* fRegistered */, pTransfer);
3016
3017 pTransferCtx->cTransfers++;
3018
3019 LogFunc(("Registered transfer ID %RU16 -- now %RU16 transfers total\n", idTransfer, pTransferCtx->cTransfers));
3020
3021 shClTransferCtxUnlock(pTransferCtx);
3022
3023 if (pTransfer->Callbacks.pfnOnRegistered)
3024 pTransfer->Callbacks.pfnOnRegistered(&pTransfer->CallbackCtx, pTransferCtx);
3025
3026 return rc;
3027 }
3028
3029 LogFunc(("Maximum number of transfers reached (%RU16 transfers)\n", pTransferCtx->cTransfers));
3030
3031 shClTransferCtxUnlock(pTransferCtx);
3032
3033 return VERR_SHCLPB_MAX_TRANSFERS_REACHED;
3034}
3035
3036/**
3037 * Removes and unregisters a transfer from a transfer context.
3038 *
3039 * @param pTransferCtx Transfer context to remove transfer from.
3040 * @param pTransfer Transfer to remove.
3041 *
3042 * @note Caller needs to take critical section.
3043 */
3044static void shclTransferCtxTransferRemoveAndUnregister(PSHCLTRANSFERCTX pTransferCtx, PSHCLTRANSFER pTransfer)
3045{
3046 Assert(RTCritSectIsOwner(&pTransferCtx->CritSect));
3047
3048 RTListNodeRemove(&pTransfer->Node);
3049
3050 Assert(pTransferCtx->cTransfers);
3051 pTransferCtx->cTransfers--;
3052
3053 Assert(pTransferCtx->cTransfers >= pTransferCtx->cRunning);
3054
3055 shClTransferCtxUnlock(pTransferCtx);
3056
3057 if (pTransfer->Callbacks.pfnOnUnregistered)
3058 pTransfer->Callbacks.pfnOnUnregistered(&pTransfer->CallbackCtx, pTransferCtx);
3059
3060 shClTransferCtxLock(pTransferCtx);
3061
3062 LogFlowFunc(("Now %RU32 transfers left\n", pTransferCtx->cTransfers));
3063}
3064
3065/**
3066 * Unregisters a transfer from an transfer context, given by its ID.
3067 *
3068 * @retval VINF_SUCCESS on success.
3069 * @retval VERR_NOT_FOUND if the transfer ID was not found.
3070 * @param pTransferCtx Transfer context to unregister transfer from.
3071 * @param idTransfer Transfer ID to unregister.
3072 */
3073int ShClTransferCtxUnregisterById(PSHCLTRANSFERCTX pTransferCtx, SHCLTRANSFERID idTransfer)
3074{
3075 AssertPtrReturn(pTransferCtx, VERR_INVALID_POINTER);
3076 AssertReturn(idTransfer, VERR_INVALID_PARAMETER);
3077
3078 shClTransferCtxLock(pTransferCtx);
3079
3080 int rc = VINF_SUCCESS;
3081
3082 LogFlowFunc(("idTransfer=%RU32\n", idTransfer));
3083
3084 if (ASMBitTestAndClear(&pTransferCtx->bmTransferIds, idTransfer), ("idTransfer=%#x\n", idTransfer))
3085 {
3086 PSHCLTRANSFER pTransfer = shClTransferCtxGetTransferByIdInternal(pTransferCtx, idTransfer);
3087 if (pTransfer)
3088 {
3089 shclTransferCtxTransferRemoveAndUnregister(pTransferCtx, pTransfer);
3090
3091 rc = shClTransferCtxSignal(pTransferCtx, false /* fRegistered */, pTransfer);
3092 }
3093 }
3094 else
3095 rc = VERR_NOT_FOUND;
3096
3097 shClTransferCtxUnlock(pTransferCtx);
3098
3099 LogFlowFuncLeaveRC(rc);
3100 return rc;
3101}
3102
3103/**
3104 * Waits for a transfer context event.
3105 *
3106 * @returns VBox status code.
3107 * @param pTransferCtx Transfer context to wait for.
3108 * @param msTimeout Timeout (in ms) to wait.
3109 * @param pEvent Where to return the event data on success.
3110 */
3111static int shClTransferCtxWaitInternal(PSHCLTRANSFERCTX pTransferCtx, RTMSINTERVAL msTimeout, PSHCLTRANSFERCTXEVENT pEvent)
3112{
3113 LogFlowFunc(("Waiting for transfer context change (%RU32 timeout) ...\n", msTimeout));
3114
3115 int rc = RTSemEventWait(pTransferCtx->ChangedEvent, msTimeout);
3116 if (RT_SUCCESS(rc))
3117 {
3118 shClTransferCtxLock(pTransferCtx);
3119
3120 memcpy(pEvent, &pTransferCtx->ChangedEventData, sizeof(SHCLTRANSFERCTXEVENT));
3121
3122 shClTransferCtxUnlock(pTransferCtx);
3123 }
3124
3125 LogFlowFuncLeaveRC(rc);
3126 return rc;
3127}
3128
3129/**
3130 * Waits for transfer to be (un-)registered.
3131 *
3132 * @returns VBox status code.
3133 * @param pTransferCtx Transfer context to wait for.
3134 * @param msTimeout Timeout (in ms) to wait.
3135 * @param fRegister Pass \c true for registering, or \c false for unregistering a transfer.
3136 * @param idTransfer Transfer ID to wait for.
3137 * Pass NIL_SHCLTRANSFERID for any transfer.
3138 * @param ppTransfer Where to return the transfer being (un-)registered. Optional and can be NULL.
3139 */
3140int ShClTransferCtxWait(PSHCLTRANSFERCTX pTransferCtx, RTMSINTERVAL msTimeout, bool fRegister, SHCLTRANSFERID idTransfer,
3141 PSHCLTRANSFER *ppTransfer)
3142{
3143 AssertPtrReturn(pTransferCtx, VERR_INVALID_POINTER);
3144
3145 int rc = VERR_TIMEOUT;
3146
3147 uint64_t const tsStartMs = RTTimeMilliTS();
3148 uint64_t msLeft = msTimeout;
3149 for (;;)
3150 {
3151 SHCLTRANSFERCTXEVENT Event;
3152 rc = shClTransferCtxWaitInternal(pTransferCtx, msLeft, &Event);
3153 if (RT_FAILURE(rc))
3154 break;
3155
3156 shClTransferCtxLock(pTransferCtx);
3157
3158 if (Event.fRegistered == fRegister)
3159 {
3160 if ( idTransfer != NIL_SHCLTRANSFERID
3161 && Event.pTransfer
3162 && ShClTransferGetID(Event.pTransfer) == idTransfer)
3163 {
3164 if (ppTransfer)
3165 *ppTransfer = Event.pTransfer;
3166 rc = VINF_SUCCESS;
3167 }
3168 }
3169
3170 shClTransferCtxUnlock(pTransferCtx);
3171
3172 if (RT_SUCCESS(rc))
3173 break;
3174
3175 msLeft -= RT_MIN(msLeft, RTTimeMilliTS() - tsStartMs);
3176 if (msLeft == 0)
3177 break;
3178 }
3179
3180 LogFlowFuncLeaveRC(rc);
3181 return rc;
3182}
3183
3184/**
3185 * Cleans up all associated transfers which are not needed (anymore).
3186 * This can be due to transfers which only have been announced but not / never being run.
3187 *
3188 * @param pTransferCtx Transfer context to cleanup transfers for.
3189 */
3190void ShClTransferCtxCleanup(PSHCLTRANSFERCTX pTransferCtx)
3191{
3192 AssertPtrReturnVoid(pTransferCtx);
3193
3194 shClTransferCtxLock(pTransferCtx);
3195
3196 LogFlowFunc(("pTransferCtx=%p, cTransfers=%RU16 cRunning=%RU16\n",
3197 pTransferCtx, pTransferCtx->cTransfers, pTransferCtx->cRunning));
3198
3199 if (pTransferCtx->cTransfers == 0)
3200 {
3201 shClTransferCtxUnlock(pTransferCtx);
3202 return;
3203 }
3204
3205 /* Remove all transfers which are not in a running state (e.g. only announced). */
3206 PSHCLTRANSFER pTransfer, pTransferNext;
3207 RTListForEachSafe(&pTransferCtx->List, pTransfer, pTransferNext, SHCLTRANSFER, Node)
3208 {
3209 shClTransferLock(pTransfer);
3210
3211 SHCLTRANSFERSTATUS const enmStatus = shClTransferGetStatusLocked(pTransfer);
3212 LogFlowFunc(("\tTransfer #%RU16: %s\n", pTransfer->State.uID, ShClTransferStatusToStr(enmStatus)));
3213
3214 if (enmStatus != SHCLTRANSFERSTATUS_STARTED)
3215 {
3216 shClTransferUnlock(pTransfer);
3217
3218 shclTransferCtxTransferRemoveAndUnregister(pTransferCtx, pTransfer);
3219
3220 ShClTransferDestroy(pTransfer);
3221
3222 RTMemFree(pTransfer);
3223 pTransfer = NULL;
3224 }
3225 else
3226 shClTransferUnlock(pTransfer);
3227 }
3228
3229 shClTransferCtxUnlock(pTransferCtx);
3230}
3231
3232/**
3233 * Returns whether the maximum of concurrent transfers of a specific transfer contexthas been reached or not.
3234 *
3235 * @returns \c if maximum has been reached, \c false if not.
3236 * @param pTransferCtx Transfer context to determine value for.
3237 */
3238bool ShClTransferCtxIsMaximumReached(PSHCLTRANSFERCTX pTransferCtx)
3239{
3240 AssertPtrReturn(pTransferCtx, true);
3241
3242 shClTransferCtxLock(pTransferCtx);
3243
3244 LogFlowFunc(("cRunning=%RU32, cMaxRunning=%RU32\n", pTransferCtx->cRunning, pTransferCtx->cMaxRunning));
3245
3246 Assert(pTransferCtx->cRunning <= pTransferCtx->cMaxRunning);
3247 bool const fMaximumReached = pTransferCtx->cRunning == pTransferCtx->cMaxRunning;
3248
3249 shClTransferCtxUnlock(pTransferCtx);
3250
3251 return fMaximumReached;
3252}
3253
3254/**
3255 * Copies file system objinfo from IPRT to Shared Clipboard format.
3256 *
3257 * @return VBox status code.
3258 * @param pDst The Shared Clipboard structure to convert data to.
3259 * @param pSrc The IPRT structure to convert data from.
3260 */
3261int ShClFsObjInfoFromIPRT(PSHCLFSOBJINFO pDst, PCRTFSOBJINFO pSrc)
3262{
3263 AssertPtrReturn(pDst, VERR_INVALID_POINTER);
3264 AssertPtrReturn(pSrc, VERR_INVALID_POINTER);
3265
3266 pDst->cbObject = pSrc->cbObject;
3267 pDst->cbAllocated = pSrc->cbAllocated;
3268 pDst->AccessTime = pSrc->AccessTime;
3269 pDst->ModificationTime = pSrc->ModificationTime;
3270 pDst->ChangeTime = pSrc->ChangeTime;
3271 pDst->BirthTime = pSrc->BirthTime;
3272 pDst->Attr.fMode = pSrc->Attr.fMode;
3273 /* Clear bits which we don't pass through for security reasons. */
3274 pDst->Attr.fMode &= ~(RTFS_UNIX_ISUID | RTFS_UNIX_ISGID | RTFS_UNIX_ISTXT);
3275 RT_ZERO(pDst->Attr.u);
3276 switch (pSrc->Attr.enmAdditional)
3277 {
3278 default:
3279 RT_FALL_THROUGH();
3280 case RTFSOBJATTRADD_NOTHING:
3281 pDst->Attr.enmAdditional = SHCLFSOBJATTRADD_NOTHING;
3282 break;
3283
3284 case RTFSOBJATTRADD_UNIX:
3285 pDst->Attr.enmAdditional = SHCLFSOBJATTRADD_UNIX;
3286 pDst->Attr.u.Unix.uid = pSrc->Attr.u.Unix.uid;
3287 pDst->Attr.u.Unix.gid = pSrc->Attr.u.Unix.gid;
3288 pDst->Attr.u.Unix.cHardlinks = pSrc->Attr.u.Unix.cHardlinks;
3289 pDst->Attr.u.Unix.INodeIdDevice = pSrc->Attr.u.Unix.INodeIdDevice;
3290 pDst->Attr.u.Unix.INodeId = pSrc->Attr.u.Unix.INodeId;
3291 pDst->Attr.u.Unix.fFlags = pSrc->Attr.u.Unix.fFlags;
3292 pDst->Attr.u.Unix.GenerationId = pSrc->Attr.u.Unix.GenerationId;
3293 pDst->Attr.u.Unix.Device = pSrc->Attr.u.Unix.Device;
3294 break;
3295
3296 case RTFSOBJATTRADD_EASIZE:
3297 pDst->Attr.enmAdditional = SHCLFSOBJATTRADD_EASIZE;
3298 pDst->Attr.u.EASize.cb = pSrc->Attr.u.EASize.cb;
3299 break;
3300 }
3301
3302 return VINF_SUCCESS;
3303}
3304
3305/**
3306 * Queries local file system information from a given path.
3307 *
3308 * @returns VBox status code.
3309 * @param pszPath Path to query file system information for.
3310 * @param pObjInfo Where to return the queried file system information on success.
3311 */
3312int ShClFsObjInfoQueryLocal(const char *pszPath, PSHCLFSOBJINFO pObjInfo)
3313{
3314 RTFSOBJINFO objInfo;
3315 int rc = RTPathQueryInfo(pszPath, &objInfo,
3316#if defined(RT_OS_WINDOWS) || defined(RT_OS_OS2)
3317 RTFSOBJATTRADD_NOTHING
3318#else
3319 RTFSOBJATTRADD_UNIX
3320#endif
3321 );
3322 if (RT_SUCCESS(rc))
3323 rc = ShClFsObjInfoFromIPRT(pObjInfo, &objInfo);
3324
3325 return rc;
3326}
3327
3328/**
3329 * Translates a clipboard transfer status (SHCLTRANSFERSTATUS_XXX) into a string.
3330 *
3331 * @returns Transfer status string name.
3332 * @param enmStatus The transfer status to translate.
3333 */
3334const char *ShClTransferStatusToStr(SHCLTRANSFERSTATUS enmStatus)
3335{
3336 switch (enmStatus)
3337 {
3338 RT_CASE_RET_STR(SHCLTRANSFERSTATUS_NONE);
3339 RT_CASE_RET_STR(SHCLTRANSFERSTATUS_REQUESTED);
3340 RT_CASE_RET_STR(SHCLTRANSFERSTATUS_INITIALIZED);
3341 RT_CASE_RET_STR(SHCLTRANSFERSTATUS_UNINITIALIZED);
3342 RT_CASE_RET_STR(SHCLTRANSFERSTATUS_STARTED);
3343 RT_CASE_RET_STR(SHCLTRANSFERSTATUS_COMPLETED);
3344 RT_CASE_RET_STR(SHCLTRANSFERSTATUS_CANCELED);
3345 RT_CASE_RET_STR(SHCLTRANSFERSTATUS_KILLED);
3346 RT_CASE_RET_STR(SHCLTRANSFERSTATUS_ERROR);
3347 }
3348 return "Unknown";
3349}
3350
3351/**
3352 * Validates whether a given path matches our set of rules or not.
3353 *
3354 * @returns VBox status code.
3355 * @param pcszPath Path to validate.
3356 * @param fMustExist Whether the path to validate also must exist.
3357 */
3358int ShClTransferValidatePath(const char *pcszPath, bool fMustExist)
3359{
3360 int rc = VINF_SUCCESS;
3361
3362 if (!strlen(pcszPath))
3363 rc = VERR_INVALID_PARAMETER;
3364
3365 if ( RT_SUCCESS(rc)
3366 && !RTStrIsValidEncoding(pcszPath))
3367 {
3368 rc = VERR_INVALID_UTF8_ENCODING;
3369 }
3370
3371 if ( RT_SUCCESS(rc)
3372 && RTStrStr(pcszPath, ".."))
3373 {
3374 rc = VERR_INVALID_PARAMETER;
3375 }
3376
3377 if ( RT_SUCCESS(rc)
3378 && fMustExist)
3379 {
3380 RTFSOBJINFO objInfo;
3381 rc = RTPathQueryInfo(pcszPath, &objInfo, RTFSOBJATTRADD_NOTHING);
3382 if (RT_SUCCESS(rc))
3383 {
3384 if (RTFS_IS_DIRECTORY(objInfo.Attr.fMode))
3385 {
3386 if (!RTDirExists(pcszPath)) /* Path must exist. */
3387 rc = VERR_PATH_NOT_FOUND;
3388 }
3389 else if (RTFS_IS_FILE(objInfo.Attr.fMode))
3390 {
3391 if (!RTFileExists(pcszPath)) /* File must exist. */
3392 rc = VERR_FILE_NOT_FOUND;
3393 }
3394 else /* Everything else (e.g. symbolic links) are not supported. */
3395 {
3396 LogRelMax(64, ("Shared Clipboard: Path '%s' contains a symbolic link or junction, which are not supported\n", pcszPath));
3397 rc = VERR_NOT_SUPPORTED;
3398 }
3399 }
3400 }
3401
3402 if (RT_FAILURE(rc))
3403 LogRelMax(64, ("Shared Clipboard: Validating path '%s' failed: %Rrc\n", pcszPath, rc));
3404
3405 LogFlowFuncLeaveRC(rc);
3406 return rc;
3407}
3408
3409/**
3410 * Resolves a relative path of a specific transfer to its absolute path.
3411 *
3412 * @returns VBox status code.
3413 * @param pTransfer Clipboard transfer to resolve path for.
3414 * @param pszPath Relative path to resolve.
3415 * Paths have to end with a (back-)slash, otherwise this is considered to be a file.
3416 * @param fFlags Resolve flags. Currently not used and must be 0.
3417 * @param ppszResolved Where to store the allocated resolved path. Must be free'd by the called using RTStrFree().
3418 */
3419int ShClTransferResolvePathAbs(PSHCLTRANSFER pTransfer, const char *pszPath, uint32_t fFlags, char **ppszResolved)
3420{
3421 AssertPtrReturn(pTransfer, VERR_INVALID_POINTER);
3422 AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
3423 AssertReturn (fFlags == 0, VERR_INVALID_PARAMETER);
3424 AssertPtrReturn(ppszResolved, VERR_INVALID_POINTER);
3425
3426 LogFlowFunc(("pszPath=%s, fFlags=%#x (pszPathRootAbs=%s, cRootListEntries=%RU64)\n",
3427 pszPath, fFlags, pTransfer->pszPathRootAbs, pTransfer->lstRoots.Hdr.cEntries));
3428
3429 int rc = ShClTransferValidatePath(pszPath, false /* fMustExist */);
3430 if (RT_SUCCESS(rc))
3431 {
3432 rc = VERR_PATH_NOT_FOUND; /* Play safe by default. */
3433
3434 PSHCLLISTENTRY pEntry;
3435 RTListForEach(&pTransfer->lstRoots.lstEntries, pEntry, SHCLLISTENTRY, Node)
3436 {
3437 LogFlowFunc(("\tpEntry->pszName=%s\n", pEntry->pszName));
3438
3439 if (RTStrStartsWith(pszPath, pEntry->pszName)) /* Case-sensitive! */
3440 {
3441 rc = VINF_SUCCESS;
3442 break;
3443 }
3444 }
3445
3446 if (RT_SUCCESS(rc))
3447 {
3448 char *pszPathAbs = RTPathJoinA(pTransfer->pszPathRootAbs, pszPath);
3449 if (pszPathAbs)
3450 {
3451 char szResolved[RTPATH_MAX];
3452 size_t cbResolved = sizeof(szResolved);
3453 rc = RTPathAbsEx(pTransfer->pszPathRootAbs, pszPathAbs, RTPATH_STR_F_STYLE_HOST, szResolved, &cbResolved);
3454
3455 RTStrFree(pszPathAbs);
3456 pszPathAbs = NULL;
3457
3458 if (RT_SUCCESS(rc))
3459 {
3460 LogRel2(("Shared Clipboard: Resolved: '%s' -> '%s'\n", pszPath, szResolved));
3461
3462 *ppszResolved = RTStrDup(szResolved);
3463 }
3464 }
3465 else
3466 rc = VERR_NO_MEMORY;
3467 }
3468 }
3469
3470 if (RT_FAILURE(rc))
3471 LogRel(("Shared Clipboard: Resolving absolute path for '%s' failed, rc=%Rrc\n", pszPath, rc));
3472
3473 LogFlowFuncLeaveRC(rc);
3474 return rc;
3475}
3476
3477/**
3478 * Converts Shared Clipboard create flags (see SharedClipboard-transfers.h) into IPRT create flags.
3479 *
3480 * @returns IPRT status code.
3481 * @param fShClFlags Shared clipboard create flags.
3482 * @param[out] pfOpen Where to store the RTFILE_O_XXX flags for
3483 * RTFileOpen.
3484 *
3485 * @sa Initially taken from vbsfConvertFileOpenFlags().
3486 */
3487int ShClTransferConvertFileCreateFlags(uint32_t fShClFlags, uint64_t *pfOpen)
3488{
3489 AssertMsgReturnStmt(!(fShClFlags & ~SHCL_OBJ_CF_VALID_MASK), ("%#x4\n", fShClFlags), *pfOpen = 0, VERR_INVALID_FLAGS);
3490
3491 uint64_t fOpen = 0;
3492
3493 switch (fShClFlags & SHCL_OBJ_CF_ACCESS_MASK_RW)
3494 {
3495 case SHCL_OBJ_CF_ACCESS_NONE:
3496 {
3497#ifdef RT_OS_WINDOWS
3498 if ((fShClFlags & SHCL_OBJ_CF_ACCESS_MASK_ATTR) != SHCL_OBJ_CF_ACCESS_ATTR_NONE)
3499 fOpen |= RTFILE_O_OPEN | RTFILE_O_ATTR_ONLY;
3500 else
3501#endif
3502 fOpen |= RTFILE_O_OPEN | RTFILE_O_READ;
3503 LogFlowFunc(("SHCL_OBJ_CF_ACCESS_NONE\n"));
3504 break;
3505 }
3506
3507 case SHCL_OBJ_CF_ACCESS_READ:
3508 {
3509 fOpen |= RTFILE_O_OPEN | RTFILE_O_READ;
3510 LogFlowFunc(("SHCL_OBJ_CF_ACCESS_READ\n"));
3511 break;
3512 }
3513
3514 default:
3515 AssertFailedReturn(VERR_IPE_NOT_REACHED_DEFAULT_CASE);
3516 }
3517
3518 switch (fShClFlags & SHCL_OBJ_CF_ACCESS_MASK_ATTR)
3519 {
3520 case SHCL_OBJ_CF_ACCESS_ATTR_NONE:
3521 {
3522 fOpen |= RTFILE_O_ACCESS_ATTR_DEFAULT;
3523 LogFlowFunc(("SHCL_OBJ_CF_ACCESS_ATTR_NONE\n"));
3524 break;
3525 }
3526
3527 case SHCL_OBJ_CF_ACCESS_ATTR_READ:
3528 {
3529 fOpen |= RTFILE_O_ACCESS_ATTR_READ;
3530 LogFlowFunc(("SHCL_OBJ_CF_ACCESS_ATTR_READ\n"));
3531 break;
3532 }
3533
3534 default:
3535 AssertFailedReturn(VERR_IPE_NOT_REACHED_DEFAULT_CASE);
3536 }
3537
3538 /* Sharing mask */
3539 switch (fShClFlags & SHCL_OBJ_CF_ACCESS_MASK_DENY)
3540 {
3541 case SHCL_OBJ_CF_ACCESS_DENYNONE:
3542 fOpen |= RTFILE_O_DENY_NONE;
3543 LogFlowFunc(("SHCL_OBJ_CF_ACCESS_DENYNONE\n"));
3544 break;
3545
3546 case SHCL_OBJ_CF_ACCESS_DENYWRITE:
3547 fOpen |= RTFILE_O_DENY_WRITE;
3548 LogFlowFunc(("SHCL_OBJ_CF_ACCESS_DENYWRITE\n"));
3549 break;
3550
3551 default:
3552 AssertFailedReturn(VERR_IPE_NOT_REACHED_DEFAULT_CASE);
3553 }
3554
3555 *pfOpen = fOpen;
3556
3557 LogFlowFuncLeaveRC(VINF_SUCCESS);
3558 return VINF_SUCCESS;
3559}
3560
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