net.c@ 76553

Last change on this file since 76553 was 76553, checked in by vboxsync, 6 years ago
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1	/* $Id: net.c 76553 2019-01-01 01:45:53Z vboxsync $ */
2	/** @file
3	* VirtualBox Windows Guest Shared Folders - File System Driver network redirector subsystem routines
4	*/
5
6	/*
7	* Copyright (C) 2012-2019 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	#include "vbsf.h"
19
20	NTSTATUS VBoxMRxUpdateNetRootState(IN OUT PMRX_NET_ROOT pNetRoot)
21	{
22	RT_NOREF(pNetRoot);
23	Log(("VBOXSF: MRxUpdateNetRootState\n"));
24	return STATUS_NOT_IMPLEMENTED;
25	}
26
27	static void vbsfUpdateNetRoot(PMRX_NET_ROOT pNetRoot)
28	{
29	Log(("VBOXSF: vbsfUpdateNetRoot: NetRoot = 0x%x Type = 0x%x\n",
30	pNetRoot, pNetRoot->Type));
31
32	switch (pNetRoot->Type)
33	{
34	case NET_ROOT_DISK:
35	pNetRoot->DeviceType = RxDeviceType(DISK);
36	break;
37	case NET_ROOT_PIPE:
38	pNetRoot->DeviceType = RxDeviceType(NAMED_PIPE);
39	break;
40	case NET_ROOT_COMM:
41	pNetRoot->DeviceType = RxDeviceType(SERIAL_PORT);
42	break;
43	case NET_ROOT_PRINT:
44	pNetRoot->DeviceType = RxDeviceType(PRINTER);
45	break;
46	case NET_ROOT_MAILSLOT:
47	pNetRoot->DeviceType = RxDeviceType(MAILSLOT);
48	break;
49	case NET_ROOT_WILD:
50	/* We get this type when for example Windows Media player opens an MP3 file.
51	* This NetRoot has the same remote path (\\vboxsrv\dir) as other NetRoots,
52	* which were created earlier and which were NET_ROOT_DISK.
53	*
54	* In the beginning of the function (UpdateNetRoot) the DDK sample sets
55	* pNetRoot->Type of newly created NetRoots using a value previously
56	* pstored in a NetRootExtension. One NetRootExtensions is used for a single
57	* remote path and reused by a few NetRoots, if they point to the same path.
58	*
59	* To simplify things we just set the type to DISK here (we do not support
60	* anything else anyway), and update the DeviceType correspondingly.
61	*/
62	pNetRoot->Type = NET_ROOT_DISK;
63	pNetRoot->DeviceType = RxDeviceType(DISK);
64	break;
65	default:
66	AssertMsgFailed(("VBOXSF: vbsfUpdateNetRoot: Invalid net root type! Type = 0x%x\n",
67	pNetRoot->Type));
68	break;
69	}
70
71	Log(("VBOXSF: vbsfUpdateNetRoot: leaving pNetRoot->DeviceType = 0x%x\n",
72	pNetRoot->DeviceType));
73	}
74
75	NTSTATUS VBoxMRxCreateVNetRoot(IN PMRX_CREATENETROOT_CONTEXT pCreateNetRootContext)
76	{
77	NTSTATUS Status;
78
79	PMRX_V_NET_ROOT pVNetRoot = (PMRX_V_NET_ROOT)pCreateNetRootContext->pVNetRoot;
80
81	PMRX_VBOX_DEVICE_EXTENSION pDeviceExtension = VBoxMRxGetDeviceExtension(pCreateNetRootContext->RxContext);
82	PMRX_VBOX_NETROOT_EXTENSION pNetRootExtension = VBoxMRxGetNetRootExtension(pVNetRoot->pNetRoot);
83
84	PMRX_NET_ROOT pNetRoot = pVNetRoot->pNetRoot;
85	PMRX_SRV_CALL pSrvCall = pNetRoot->pSrvCall;
86
87	BOOLEAN fInitializeNetRoot = FALSE;
88
89	Log(("VBOXSF: MRxCreateVNetRoot: pNetRoot = %p, pNetRootExtension = %p, name = [%.*ls]\n",
90	pNetRoot, pNetRootExtension, pNetRoot->pNetRootName->Length / sizeof(WCHAR), pNetRoot->pNetRootName->Buffer));
91
92	/* IMPORTANT:
93	*
94	* This function must always call 'pCreateNetRootContext->Callback(pCreateNetRootContext)' before
95	* returning and then return STATUS_PENDING. Otherwise Win64 will hang.
96	*/
97
98	if (pNetRoot->Type == NET_ROOT_PIPE)
99	{
100	/* VBoxSF claims everything which starts with '\vboxsrv'.
101	*
102	* So sometimes the system tries to open \vboxsrv\ipc$ pipe for DFS
103	* and fails the application call if an unexpected code is returned.
104	*
105	* According to MSDN: The Windows client returns STATUS_MORE_PROCESSING_REQUIRED to the calling
106	* application to indicate that the path does not correspond to a DFS Namespace.
107	*/
108	pVNetRoot->Context = NULL;
109
110	if (pNetRoot->pNetRootName->Length >= 13 * sizeof (WCHAR)) /* Number of bytes in '\vboxsrv\ipc$' unicode string. */
111	{
112	const WCHAR Suffix = &pNetRoot->pNetRootName->Buffer[8]; / Number of chars in '\vboxsrv' */
113
114	if ( Suffix[0] == L'\\'
115	&& (Suffix[1] == L'I' \|\| Suffix[1] == L'i')
116	&& (Suffix[2] == L'P' \|\| Suffix[2] == L'p')
117	&& (Suffix[3] == L'C' \|\| Suffix[3] == L'c')
118	&& Suffix[4] == L'$'
119	)
120	{
121	if ( pNetRoot->pNetRootName->Length == 13 * sizeof (WCHAR)
122	\|\| (Suffix[5] == L'\\' \|\| Suffix[5] == 0)
123	)
124	{
125	/* It is '\vboxsrv\IPC$[\]'. /
126	Log(("VBOXSF: MRxCreateVNetRoot: IPC$\n"));
127	Status = STATUS_MORE_PROCESSING_REQUIRED;
128	goto l_Exit;
129	}
130	}
131	}
132
133	/* Fail all other pipe open requests. */
134	Log(("VBOXSF: MRxCreateVNetRoot: Pipe open not supported!\n"));
135	Status = STATUS_NOT_SUPPORTED;
136	goto l_Exit;
137	}
138	else if (pNetRoot->Type == NET_ROOT_MAILSLOT)
139	{
140	Log(("VBOXSF: MRxCreateVNetRoot: Mailslot open not supported!\n"));
141	pVNetRoot->Context = NULL;
142	Status = STATUS_NOT_SUPPORTED;
143	goto l_Exit;
144	}
145
146	if (!pNetRoot->Context)
147	{
148	/* MRxNetRootSize is not zero in VBoxSF, so it is expected
149	* that the Context, which is NetRootExtension, is already allocated.
150	*/
151	Log(("VBOXSF: MRxCreateVNetRoot: NULL netroot context\n"));
152	pVNetRoot->Context = NULL;
153	Status = STATUS_NOT_SUPPORTED;
154	goto l_Exit;
155	}
156
157	/* Detect an already initialized NetRoot.
158	* pNetRootExtension is actually the pNetRoot->Context and it is not NULL.
159	*/
160	fInitializeNetRoot = (pNetRootExtension->phgcmClient == NULL);
161
162	Status = STATUS_SUCCESS;
163
164	if (fInitializeNetRoot)
165	{
166	PWCHAR pRootName;
167	ULONG RootNameLength;
168	int vboxRC;
169	PSHFLSTRING ParsedPath = 0;
170
171	Log(("VBOXSF: MRxCreateVNetRoot: initialize NET_ROOT\n"));
172
173	pNetRoot->MRxNetRootState = MRX_NET_ROOT_STATE_GOOD;
174
175	RootNameLength = pNetRoot->pNetRootName->Length - pSrvCall->pSrvCallName->Length;
176	if (RootNameLength < sizeof(WCHAR))
177	{
178	/* Refuse a netroot path with an empty shared folder name */
179	Log(("VBOXSF: MRxCreateVNetRoot: Empty shared folder name!\n"));
180	pNetRoot->MRxNetRootState = MRX_NET_ROOT_STATE_ERROR;
181
182	Status = STATUS_BAD_NETWORK_NAME;
183	goto l_Exit;
184	}
185
186	RootNameLength -= sizeof(WCHAR); /* Remove leading backslash. */
187	pRootName = (PWCHAR)(pNetRoot->pNetRootName->Buffer + (pSrvCall->pSrvCallName->Length / sizeof(WCHAR)));
188	pRootName++; /* Remove leading backslash. */
189
190	/* Strip the trailing \0. Sometimes there is one, sometimes not... */
191	if ( RootNameLength >= sizeof(WCHAR)
192	&& pRootName[RootNameLength / sizeof(WCHAR) - 1] == 0)
193	RootNameLength -= sizeof(WCHAR);
194
195	if (!pNetRootExtension->phgcmClient)
196	{
197	Log(("VBOXSF: MRxCreateVNetRoot: Initialize netroot length = %d, name = %.*ls\n",
198	RootNameLength, RootNameLength / sizeof(WCHAR), pRootName));
199
200	Status = vbsfShflStringFromUnicodeAlloc(&ParsedPath, pRootName, (uint16_t)RootNameLength);
201	if (Status != STATUS_SUCCESS)
202	{
203	goto l_Exit;
204	}
205
206	vboxRC = VbglR0SfMapFolder(&pDeviceExtension->hgcmClient, ParsedPath, &pNetRootExtension->map);
207	vbsfFreeNonPagedMem(ParsedPath);
208	if (vboxRC != VINF_SUCCESS)
209	{
210	Log(("VBOXSF: MRxCreateVNetRoot: VbglR0SfMapFolder failed with %d\n", vboxRC));
211	Status = STATUS_BAD_NETWORK_NAME;
212	}
213	else
214	{
215	Status = STATUS_SUCCESS;
216	pNetRootExtension->phgcmClient = &pDeviceExtension->hgcmClient;
217	}
218	}
219	}
220	else
221	Log(("VBOXSF: MRxCreateVNetRoot: Creating V_NET_ROOT on existing NET_ROOT!\n"));
222
223	vbsfUpdateNetRoot(pNetRoot);
224
225	l_Exit:
226	if (Status != STATUS_PENDING)
227	{
228	Log(("VBOXSF: MRxCreateVNetRoot: Returning 0x%08X\n", Status));
229	pCreateNetRootContext->VirtualNetRootStatus = Status;
230	if (fInitializeNetRoot)
231	pCreateNetRootContext->NetRootStatus = Status;
232	else
233	pCreateNetRootContext->NetRootStatus = STATUS_SUCCESS;
234
235	/* Inform RDBSS. */
236	pCreateNetRootContext->Callback(pCreateNetRootContext);
237
238	/* RDBSS expects this. */
239	Status = STATUS_PENDING;
240	}
241
242	Log(("VBOXSF: MRxCreateVNetRoot: Returned STATUS_PENDING\n"));
243	return Status;
244	}
245
246	NTSTATUS VBoxMRxFinalizeVNetRoot(IN PMRX_V_NET_ROOT pVNetRoot, IN PBOOLEAN ForceDisconnect)
247	{
248	RT_NOREF(pVNetRoot, ForceDisconnect);
249	Log(("VBOXSF: MRxFinalizeVNetRoot: V_NET_ROOT %p, NET_ROOT %p\n", pVNetRoot, pVNetRoot->pNetRoot));
250
251	return STATUS_SUCCESS;
252	}
253
254	NTSTATUS VBoxMRxFinalizeNetRoot(IN PMRX_NET_ROOT pNetRoot, IN PBOOLEAN ForceDisconnect)
255	{
256	PMRX_VBOX_NETROOT_EXTENSION pNetRootExtension = VBoxMRxGetNetRootExtension(pNetRoot);
257	RT_NOREF(pNetRoot, ForceDisconnect);
258
259	Log(("VBOXSF: MRxFinalizeNetRoot: NET_ROOT %p\n", pNetRoot));
260
261	if (pNetRootExtension->phgcmClient)
262	{
263	int vboxRC = VbglR0SfUnmapFolder(pNetRootExtension->phgcmClient, &pNetRootExtension->map);
264	if (vboxRC != VINF_SUCCESS)
265	Log(("VBOXSF: MRxFinalizeVNetRoot: VbglR0SfUnmapFolder failed with %d\n",
266	vboxRC));
267	pNetRootExtension->phgcmClient = NULL;
268	}
269
270	return STATUS_SUCCESS;
271	}
272
273	VOID VBoxMRxExtractNetRootName(IN PUNICODE_STRING FilePathName,
274	IN PMRX_SRV_CALL SrvCall,
275	OUT PUNICODE_STRING NetRootName,
276	OUT PUNICODE_STRING RestOfName OPTIONAL)
277	{
278	int cChars = FilePathName->Length/sizeof(WCHAR);
279	int iNetRoot;
280	int i;
281
282	/* Split "\vboxsvr\share\path" to
283	* NetRootName = "\share"
284	* RestOfName = "\path"
285	*
286	* Note that SrvCall->pSrvCallName contains "\vboxsrv".
287	*/
288
289	Log(("VBOXSF: MRxExtractNetRootName: [%.*ls], RestOfName %p\n",
290	FilePathName->Length/sizeof(WCHAR), FilePathName->Buffer, RestOfName));
291
292	/* Assume that the server prefix is OK.
293	* iNetRoot points to the first char after server name, the delimiter.
294	*/
295	iNetRoot = SrvCall->pSrvCallName->Length/sizeof(WCHAR);
296
297	/* Find the NetRoot length: end of FilePathName or the next delimiter. */
298	i = iNetRoot;
299	while (i < cChars)
300	{
301	if ( FilePathName->Buffer[i] == L'\\'
302	&& i > iNetRoot)
303	{
304	break;
305	}
306	i++;
307	}
308
309	Log(("VBOXSF: MRxExtractNetRootName: cChars %d, iNetRoot %d, iRest %d\n",
310	cChars, iNetRoot, i));
311
312	NetRootName->Buffer = &FilePathName->Buffer[iNetRoot];
313	NetRootName->Length = (USHORT)((i - iNetRoot) * sizeof(WCHAR));
314	NetRootName->MaximumLength = NetRootName->Length;
315
316	Log(("VBOXSF: MRxExtractNetRootName: Srv = %.ls, Root = %.ls\n",
317	SrvCall->pSrvCallName->Length / sizeof(WCHAR), SrvCall->pSrvCallName->Buffer,
318	NetRootName->Length / sizeof(WCHAR), NetRootName->Buffer));
319
320	if (RestOfName)
321	{
322	RestOfName->Buffer = &FilePathName->Buffer[i];
323	RestOfName->Length = (USHORT)((cChars - i) * sizeof(WCHAR));
324	RestOfName->MaximumLength = RestOfName->Length;
325
326	Log(("VBOXSF: MRxExtractNetRootName: Rest = %.*ls\n",
327	RestOfName->Length / sizeof(WCHAR), RestOfName->Buffer));
328	}
329	}
330
331	static VOID vbsfExecuteCreateSrvCall(PMRX_SRVCALL_CALLBACK_CONTEXT pCallbackContext)
332	{
333	NTSTATUS Status;
334	PWCHAR pSrvName = 0;
335	BOOLEAN Verifier;
336
337	PMRX_SRVCALL_CALLBACK_CONTEXT SCCBC = pCallbackContext;
338	PMRX_SRVCALLDOWN_STRUCTURE SrvCalldownStructure = (PMRX_SRVCALLDOWN_STRUCTURE)(SCCBC->SrvCalldownStructure);
339	PMRX_SRV_CALL pSrvCall = SrvCalldownStructure->SrvCall;
340
341	/* Validate the server name with the test name of 'vboxsvr'. */
342	Log(("VBOXSF: vbsfExecuteCreateSrvCall: Connection Name %.*ls Length: %d, pSrvCall = %p\n",
343	pSrvCall->pSrvCallName->Length / sizeof(WCHAR), pSrvCall->pSrvCallName->Buffer, pSrvCall->pSrvCallName->Length, pSrvCall));
344
345	if (pSrvCall->pPrincipalName && pSrvCall->pPrincipalName->Length)
346	{
347	Log(("VBOXSF: vbsfExecuteCreateSrvCall: Principal name = %.*ls\n",
348	pSrvCall->pPrincipalName->Length / sizeof(WCHAR), pSrvCall->pPrincipalName->Buffer));
349	}
350
351	if (pSrvCall->pDomainName && pSrvCall->pDomainName->Length)
352	{
353	Log(("VBOXSF: vbsfExecuteCreateSrvCall: Domain name = %.*ls\n",
354	pSrvCall->pDomainName->Length / sizeof(WCHAR), pSrvCall->pDomainName->Buffer));
355	}
356
357	if (pSrvCall->pSrvCallName->Length >= 14)
358	{
359	pSrvName = pSrvCall->pSrvCallName->Buffer;
360
361	Verifier = (pSrvName[0] == L'\\');
362	Verifier &= (pSrvName[1] == L'V') \|\| (pSrvName[1] == L'v');
363	Verifier &= (pSrvName[2] == L'B') \|\| (pSrvName[2] == L'b');
364	Verifier &= (pSrvName[3] == L'O') \|\| (pSrvName[3] == L'o');
365	Verifier &= (pSrvName[4] == L'X') \|\| (pSrvName[4] == L'x');
366	Verifier &= (pSrvName[5] == L'S') \|\| (pSrvName[5] == L's');
367	/* Both vboxsvr & vboxsrv are now accepted */
368	if ((pSrvName[6] == L'V') \|\| (pSrvName[6] == L'v'))
369	{
370	Verifier &= (pSrvName[6] == L'V') \|\| (pSrvName[6] == L'v');
371	Verifier &= (pSrvName[7] == L'R') \|\| (pSrvName[7] == L'r');
372	}
373	else
374	{
375	Verifier &= (pSrvName[6] == L'R') \|\| (pSrvName[6] == L'r');
376	Verifier &= (pSrvName[7] == L'V') \|\| (pSrvName[7] == L'v');
377	}
378	Verifier &= (pSrvName[8] == L'\\') \|\| (pSrvName[8] == 0);
379	}
380	else
381	Verifier = FALSE;
382
383	if (Verifier)
384	{
385	Log(("VBOXSF: vbsfExecuteCreateSrvCall: Verifier succeeded!\n"));
386	Status = STATUS_SUCCESS;
387	}
388	else
389	{
390	Log(("VBOXSF: vbsfExecuteCreateSrvCall: Verifier failed!\n"));
391	Status = STATUS_BAD_NETWORK_PATH;
392	}
393
394	SCCBC->Status = Status;
395	SrvCalldownStructure->CallBack(SCCBC);
396	}
397
398	NTSTATUS VBoxMRxCreateSrvCall(PMRX_SRV_CALL pSrvCall, PMRX_SRVCALL_CALLBACK_CONTEXT pCallbackContext)
399	{
400	PMRX_SRVCALLDOWN_STRUCTURE SrvCalldownStructure = (PMRX_SRVCALLDOWN_STRUCTURE)(pCallbackContext->SrvCalldownStructure);
401	RT_NOREF(pSrvCall);
402
403	Log(("VBOXSF: MRxCreateSrvCall: %p.\n", pSrvCall));
404
405	if (IoGetCurrentProcess() == RxGetRDBSSProcess())
406	{
407	Log(("VBOXSF: MRxCreateSrvCall: Called in context of RDBSS process\n"));
408
409	vbsfExecuteCreateSrvCall(pCallbackContext);
410	}
411	else
412	{
413	NTSTATUS Status;
414
415	Log(("VBOXSF: MRxCreateSrvCall: Dispatching to worker thread\n"));
416
417	Status = RxDispatchToWorkerThread(VBoxMRxDeviceObject, DelayedWorkQueue,
418	(PWORKER_THREAD_ROUTINE)vbsfExecuteCreateSrvCall,
419	pCallbackContext);
420
421	if (Status == STATUS_SUCCESS)
422	Log(("VBOXSF: MRxCreateSrvCall: queued\n"));
423	else
424	{
425	pCallbackContext->Status = Status;
426	SrvCalldownStructure->CallBack(pCallbackContext);
427	}
428	}
429
430	/* RDBSS expect this. */
431	return STATUS_PENDING;
432	}
433
434	NTSTATUS VBoxMRxFinalizeSrvCall(PMRX_SRV_CALL pSrvCall, BOOLEAN Force)
435	{
436	RT_NOREF(Force);
437	Log(("VBOXSF: MRxFinalizeSrvCall %p, ctx = %p.\n", pSrvCall, pSrvCall->Context));
438
439	pSrvCall->Context = NULL;
440
441	return STATUS_SUCCESS;
442	}
443
444	NTSTATUS VBoxMRxSrvCallWinnerNotify(IN PMRX_SRV_CALL pSrvCall, IN BOOLEAN ThisMinirdrIsTheWinner, IN OUT PVOID pSrvCallContext)
445	{
446	RT_NOREF(ThisMinirdrIsTheWinner, pSrvCallContext);
447	Log(("VBOXSF: MRxSrvCallWinnerNotify: pSrvCall %p, pSrvCall->Ctx %p, winner %d, context %p\n",
448	pSrvCall, pSrvCall->Context, ThisMinirdrIsTheWinner, pSrvCallContext));
449
450	/* Set it to not NULL. */
451	pSrvCall->Context = pSrvCall;
452
453	return STATUS_SUCCESS;
454	}

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source: vbox/trunk/src/VBox/Additions/WINNT/SharedFolders/driver/net.c@ 76553

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