NATNetworkImpl.cpp@ 93920

Last change on this file since 93920 was 93348, checked in by vboxsync, 3 years ago

NAT/Net: When enabling IPv6, check if IPv6 prefix is set. If it's not

set it to the default one (based on IPv4). bugref:8124.

Property svn:eol-style set to native
Property svn:keywords set to Author Date Id Revision

File size: 37.9 KB

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1	/* $Id: NATNetworkImpl.cpp 93348 2022-01-19 17:02:18Z vboxsync $ */
2	/** @file
3	* INATNetwork implementation.
4	*/
5
6	/*
7	* Copyright (C) 2013-2022 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	#define LOG_GROUP LOG_GROUP_MAIN_NATNETWORK
19	#include "NetworkServiceRunner.h"
20	#include "DHCPServerImpl.h"
21	#include "NATNetworkImpl.h"
22	#include "AutoCaller.h"
23
24	#include <iprt/asm.h>
25	#include <iprt/cpp/utils.h>
26	#include <iprt/net.h>
27	#include <iprt/cidr.h>
28	#include <iprt/net.h>
29	#include <VBox/com/array.h>
30	#include <VBox/com/ptr.h>
31	#include <VBox/settings.h>
32
33	#include "EventImpl.h"
34	#include "LoggingNew.h"
35
36	#include "VirtualBoxImpl.h"
37	#include <algorithm>
38	#include <list>
39
40	#ifndef RT_OS_WINDOWS
41	# include <netinet/in.h>
42	#else
43	# define IN_LOOPBACKNET 127
44	#endif
45
46
47	// constructor / destructor
48	/////////////////////////////////////////////////////////////////////////////
49	struct NATNetwork::Data
50	{
51	Data()
52	: pVirtualBox(NULL)
53	, offGateway(0)
54	, offDhcp(0)
55	{
56	}
57	virtual ~Data(){}
58	const ComObjPtr<EventSource> pEventSource;
59	#ifdef VBOX_WITH_NAT_SERVICE
60	NATNetworkServiceRunner NATRunner;
61	ComObjPtr<IDHCPServer> dhcpServer;
62	#endif
63	/** weak VirtualBox parent */
64	VirtualBox * const pVirtualBox;
65
66	/** NATNetwork settings */
67	settings::NATNetwork s;
68
69	com::Utf8Str IPv4Gateway;
70	com::Utf8Str IPv4NetworkMask;
71	com::Utf8Str IPv4DhcpServer;
72	com::Utf8Str IPv4DhcpServerLowerIp;
73	com::Utf8Str IPv4DhcpServerUpperIp;
74
75	uint32_t offGateway;
76	uint32_t offDhcp;
77
78	void recalculatePortForwarding(const RTNETADDRIPV4 &AddrNew, const RTNETADDRIPV4 &MaskNew);
79	};
80
81
82	NATNetwork::NATNetwork()
83	: m(NULL)
84	{
85	}
86
87
88	NATNetwork::~NATNetwork()
89	{
90	}
91
92
93	HRESULT NATNetwork::FinalConstruct()
94	{
95	return BaseFinalConstruct();
96	}
97
98
99	void NATNetwork::FinalRelease()
100	{
101	uninit();
102
103	BaseFinalRelease();
104	}
105
106
107	void NATNetwork::uninit()
108	{
109	/* Enclose the state transition Ready->InUninit->NotReady */
110	AutoUninitSpan autoUninitSpan(this);
111	if (autoUninitSpan.uninitDone())
112	return;
113	unconst(m->pVirtualBox) = NULL;
114	delete m;
115	m = NULL;
116	}
117
118	HRESULT NATNetwork::init(VirtualBox *aVirtualBox, com::Utf8Str aName)
119	{
120	AutoInitSpan autoInitSpan(this);
121	AssertReturn(autoInitSpan.isOk(), E_FAIL);
122
123	m = new Data();
124	/* share VirtualBox weakly */
125	unconst(m->pVirtualBox) = aVirtualBox;
126	m->s.strNetworkName = aName;
127	m->s.strIPv4NetworkCidr = "10.0.2.0/24";
128	m->offGateway = 1;
129	i_recalculateIPv6Prefix(); /* set m->strIPv6Prefix based on IPv4 */
130
131	settings::NATHostLoopbackOffset off;
132	off.strLoopbackHostAddress = "127.0.0.1";
133	off.u32Offset = (uint32_t)2;
134	m->s.llHostLoopbackOffsetList.push_back(off);
135
136	i_recalculateIpv4AddressAssignments();
137
138	HRESULT hrc = unconst(m->pEventSource).createObject();
139	if (FAILED(hrc)) throw hrc;
140
141	hrc = m->pEventSource->init();
142	if (FAILED(hrc)) throw hrc;
143
144	/* Confirm a successful initialization */
145	autoInitSpan.setSucceeded();
146
147	return S_OK;
148	}
149
150
151	HRESULT NATNetwork::setErrorBusy()
152	{
153	return setError(E_FAIL,
154	tr("Unable to change settings"
155	" while NATNetwork instance is running"));
156	}
157
158
159	HRESULT NATNetwork::i_loadSettings(const settings::NATNetwork &data)
160	{
161	AutoCaller autoCaller(this);
162	AssertComRCReturnRC(autoCaller.rc());
163
164	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
165	m->s = data;
166	if ( m->s.strIPv6Prefix.isEmpty()
167	/* also clean up bogus old default */
168	\|\| m->s.strIPv6Prefix == "fe80::/64")
169	i_recalculateIPv6Prefix(); /* set m->strIPv6Prefix based on IPv4 */
170	i_recalculateIpv4AddressAssignments();
171
172	return S_OK;
173	}
174
175	HRESULT NATNetwork::i_saveSettings(settings::NATNetwork &data)
176	{
177	AutoCaller autoCaller(this);
178	if (FAILED(autoCaller.rc())) return autoCaller.rc();
179
180	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
181	AssertReturn(!m->s.strNetworkName.isEmpty(), E_FAIL);
182	data = m->s;
183
184	m->pVirtualBox->i_onNATNetworkSetting(m->s.strNetworkName,
185	m->s.fEnabled,
186	m->s.strIPv4NetworkCidr,
187	m->IPv4Gateway,
188	m->s.fAdvertiseDefaultIPv6Route,
189	m->s.fNeedDhcpServer);
190
191	/* Notify listeners listening on this network only */
192	::FireNATNetworkSettingEvent(m->pEventSource,
193	m->s.strNetworkName,
194	m->s.fEnabled,
195	m->s.strIPv4NetworkCidr,
196	m->IPv4Gateway,
197	m->s.fAdvertiseDefaultIPv6Route,
198	m->s.fNeedDhcpServer);
199
200	return S_OK;
201	}
202
203	HRESULT NATNetwork::getEventSource(ComPtr<IEventSource> &aEventSource)
204	{
205	/* event source is const, no need to lock */
206	m->pEventSource.queryInterfaceTo(aEventSource.asOutParam());
207	return S_OK;
208	}
209
210	HRESULT NATNetwork::getNetworkName(com::Utf8Str &aNetworkName)
211	{
212	AssertReturn(!m->s.strNetworkName.isEmpty(), E_FAIL);
213	aNetworkName = m->s.strNetworkName;
214	return S_OK;
215	}
216
217	HRESULT NATNetwork::setNetworkName(const com::Utf8Str &aNetworkName)
218	{
219	if (aNetworkName.isEmpty())
220	return setError(E_INVALIDARG,
221	tr("Network name cannot be empty"));
222
223	{
224	AutoReadLock alockNatNetList(m->pVirtualBox->i_getNatNetLock() COMMA_LOCKVAL_SRC_POS);
225	if (m->pVirtualBox->i_isNatNetStarted(m->s.strNetworkName))
226	return setErrorBusy();
227
228	/** @todo r=uwe who ensures there's no other network with that name? */
229
230	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
231	if (aNetworkName == m->s.strNetworkName)
232	return S_OK;
233
234	m->s.strNetworkName = aNetworkName;
235	}
236
237
238	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
239	HRESULT rc = m->pVirtualBox->i_saveSettings();
240	ComAssertComRCRetRC(rc);
241
242	return S_OK;
243	}
244
245	HRESULT NATNetwork::getEnabled(BOOL *aEnabled)
246	{
247	*aEnabled = m->s.fEnabled;
248
249	i_recalculateIpv4AddressAssignments();
250	return S_OK;
251	}
252
253	HRESULT NATNetwork::setEnabled(const BOOL aEnabled)
254	{
255	{
256	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
257	if (RT_BOOL(aEnabled) == m->s.fEnabled)
258	return S_OK;
259	m->s.fEnabled = RT_BOOL(aEnabled);
260	}
261
262	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
263	HRESULT rc = m->pVirtualBox->i_saveSettings();
264	ComAssertComRCRetRC(rc);
265	return S_OK;
266	}
267
268	HRESULT NATNetwork::getGateway(com::Utf8Str &aIPv4Gateway)
269	{
270	aIPv4Gateway = m->IPv4Gateway;
271	return S_OK;
272	}
273
274	HRESULT NATNetwork::getNetwork(com::Utf8Str &aNetwork)
275	{
276	aNetwork = m->s.strIPv4NetworkCidr;
277	return S_OK;
278	}
279
280
281	HRESULT NATNetwork::setNetwork(const com::Utf8Str &aIPv4NetworkCidr)
282	{
283	RTNETADDRIPV4 Net, Mask;
284	int iPrefix;
285	int rc;
286
287	rc = RTNetStrToIPv4Cidr(aIPv4NetworkCidr.c_str(), &Net, &iPrefix);
288	if (RT_FAILURE(rc))
289	return setError(E_FAIL, tr("%s is not a valid IPv4 CIDR notation"),
290	aIPv4NetworkCidr.c_str());
291
292	/*
293	* /32 is a single address, not a network, /31 is the degenerate
294	* point-to-point case, so reject these. Larger values and
295	* negative values are already treated as errors by the
296	* conversion.
297	*/
298	if (iPrefix > 30)
299	return setError(E_FAIL, tr("%s network is too small"), aIPv4NetworkCidr.c_str());
300
301	if (iPrefix == 0)
302	return setError(E_FAIL, tr("%s specifies zero prefix"), aIPv4NetworkCidr.c_str());
303
304	rc = RTNetPrefixToMaskIPv4(iPrefix, &Mask);
305	AssertRCReturn(rc, setError(E_FAIL,
306	"%s: internal error: failed to convert prefix %d to netmask: %Rrc",
307	aIPv4NetworkCidr.c_str(), iPrefix, rc));
308
309	if ((Net.u & ~Mask.u) != 0)
310	return setError(E_FAIL,
311	tr("%s: the specified address is longer than the specified prefix"),
312	aIPv4NetworkCidr.c_str());
313
314	/** @todo r=uwe Check the address is unicast, not a loopback, etc. */
315
316	/* normalized CIDR notation */
317	com::Utf8StrFmt strCidr("%RTnaipv4/%d", Net.u, iPrefix);
318
319	{
320	AutoReadLock alockNatNetList(m->pVirtualBox->i_getNatNetLock() COMMA_LOCKVAL_SRC_POS);
321	if (m->pVirtualBox->i_isNatNetStarted(m->s.strNetworkName))
322	return setErrorBusy();
323
324	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
325
326	if (m->s.strIPv4NetworkCidr == strCidr)
327	return S_OK;
328
329	m->recalculatePortForwarding(Net, Mask);
330
331	m->s.strIPv4NetworkCidr = strCidr;
332	i_recalculateIpv4AddressAssignments();
333	}
334
335	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
336	HRESULT hrc = m->pVirtualBox->i_saveSettings();
337	ComAssertComRCRetRC(hrc);
338	return S_OK;
339	}
340
341
342	/**
343	* Do best effort attempt at converting existing port forwarding rules
344	* from the old prefix to the new one. This might not be possible if
345	* the new prefix is longer (i.e. the network is smaller) or if a rule
346	* lists destination not from the network (though that rule wouldn't
347	* be terribly useful, at least currently).
348	*/
349	void NATNetwork::Data::recalculatePortForwarding(const RTNETADDRIPV4 &NetNew,
350	const RTNETADDRIPV4 &MaskNew)
351	{
352	RTNETADDRIPV4 NetOld, MaskOld;
353	int iPrefixOld;
354	int rc;
355
356	if (s.mapPortForwardRules4.empty())
357	return; /* nothing to do */
358
359	rc = RTNetStrToIPv4Cidr(s.strIPv4NetworkCidr.c_str(), &NetOld, &iPrefixOld);
360	if (RT_FAILURE(rc))
361	return;
362
363	rc = RTNetPrefixToMaskIPv4(iPrefixOld, &MaskOld);
364	if (RT_FAILURE(rc))
365	return;
366
367	for (settings::NATRulesMap::iterator it = s.mapPortForwardRules4.begin();
368	it != s.mapPortForwardRules4.end();
369	++it)
370	{
371	settings::NATRule &rule = it->second;
372
373	/* parse the old destination address */
374	RTNETADDRIPV4 AddrOld;
375	rc = RTNetStrToIPv4Addr(rule.strGuestIP.c_str(), &AddrOld);
376	if (RT_FAILURE(rc))
377	continue;
378
379	/* is it in the old network? (likely) */
380	if ((AddrOld.u & MaskOld.u) != NetOld.u)
381	continue;
382
383	uint32_t u32Host = (AddrOld.u & ~MaskOld.u);
384
385	/* does it fit into the new network? */
386	if ((u32Host & MaskNew.u) != 0)
387	continue;
388
389	rule.strGuestIP.printf("%RTnaipv4", NetNew.u \| u32Host);
390	}
391	}
392
393
394	HRESULT NATNetwork::getIPv6Enabled(BOOL *aIPv6Enabled)
395	{
396	*aIPv6Enabled = m->s.fIPv6Enabled;
397
398	return S_OK;
399	}
400
401
402	HRESULT NATNetwork::setIPv6Enabled(const BOOL aIPv6Enabled)
403	{
404	{
405	AutoReadLock alockNatNetList(m->pVirtualBox->i_getNatNetLock() COMMA_LOCKVAL_SRC_POS);
406	if (m->pVirtualBox->i_isNatNetStarted(m->s.strNetworkName))
407	return setErrorBusy();
408
409	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
410
411	if (RT_BOOL(aIPv6Enabled) == m->s.fIPv6Enabled)
412	return S_OK;
413
414	/*
415	* If we are enabling ipv6 and the prefix is not set, provide
416	* the default based on ipv4.
417	*/
418	if (aIPv6Enabled && m->s.strIPv6Prefix.isEmpty())
419	i_recalculateIPv6Prefix();
420
421	m->s.fIPv6Enabled = RT_BOOL(aIPv6Enabled);
422	}
423
424	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
425	HRESULT rc = m->pVirtualBox->i_saveSettings();
426	ComAssertComRCRetRC(rc);
427
428	return S_OK;
429	}
430
431
432	HRESULT NATNetwork::getIPv6Prefix(com::Utf8Str &aIPv6Prefix)
433	{
434	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
435
436	aIPv6Prefix = m->s.strIPv6Prefix;
437	return S_OK;
438	}
439
440	HRESULT NATNetwork::setIPv6Prefix(const com::Utf8Str &aIPv6Prefix)
441	{
442	HRESULT hrc;
443	int rc;
444
445	/* Since we store it in text form, use canonical representation */
446	com::Utf8Str strNormalizedIPv6Prefix;
447
448	const char *pcsz = RTStrStripL(aIPv6Prefix.c_str());
449	if (pcsz != '\0') / verify it first if not empty/blank */
450	{
451	RTNETADDRIPV6 Net6;
452	int iPrefixLength;
453	rc = RTNetStrToIPv6Cidr(aIPv6Prefix.c_str(), &Net6, &iPrefixLength);
454	if (RT_FAILURE(rc))
455	return setError(E_INVALIDARG,
456	tr("%s is not a valid IPv6 prefix"),
457	aIPv6Prefix.c_str());
458
459	/* Accept both addr:: and addr::/64 */
460	if (iPrefixLength == 128) /* no length was specified after the address? */
461	iPrefixLength = 64; /* take it to mean /64 which we require anyway */
462	else if (iPrefixLength != 64)
463	return setError(E_INVALIDARG,
464	tr("Invalid IPv6 prefix length %d, must be 64"),
465	iPrefixLength);
466
467	/* Verify the address is unicast. */
468	if ( ((Net6.au8[0] & 0xe0) != 0x20) /* global 2000::/3 */
469	&& ((Net6.au8[0] & 0xfe) != 0xfc)) /* local fc00::/7 */
470	return setError(E_INVALIDARG,
471	tr("IPv6 prefix %RTnaipv6 is not unicast"),
472	&Net6);
473
474	/* Verify the interfaces ID part is zero */
475	if (Net6.au64[1] != 0)
476	return setError(E_INVALIDARG,
477	tr("Non-zero bits in the interface ID part"
478	" of the IPv6 prefix %RTnaipv6/64"),
479	&Net6);
480
481	rc = strNormalizedIPv6Prefix.printfNoThrow("%RTnaipv6/64", &Net6);
482	if (RT_FAILURE(rc))
483	{
484	if (rc == VERR_NO_MEMORY)
485	return setError(E_OUTOFMEMORY);
486	else
487	return setError(E_FAIL, tr("Internal error"));
488	}
489	}
490
491	{
492	AutoReadLock alockNatNetList(m->pVirtualBox->i_getNatNetLock() COMMA_LOCKVAL_SRC_POS);
493	if (m->pVirtualBox->i_isNatNetStarted(m->s.strNetworkName))
494	return setErrorBusy();
495
496	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
497
498	if (strNormalizedIPv6Prefix == m->s.strIPv6Prefix)
499	return S_OK;
500
501	/* only allow prefix to be empty if IPv6 is disabled */
502	if (strNormalizedIPv6Prefix.isEmpty() && m->s.fIPv6Enabled)
503	return setError(E_FAIL, tr("Setting an empty IPv6 prefix when IPv6 is enabled"));
504
505	/**
506	* @todo
507	* silently ignore network IPv6 prefix update.
508	* todo: see similar todo in NATNetwork::COMSETTER(Network)(IN_BSTR)
509	*/
510	if (!m->s.mapPortForwardRules6.empty())
511	return S_OK;
512
513	m->s.strIPv6Prefix = strNormalizedIPv6Prefix;
514	}
515
516	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
517	hrc = m->pVirtualBox->i_saveSettings();
518	ComAssertComRCRetRC(hrc);
519
520	return S_OK;
521	}
522
523
524	HRESULT NATNetwork::getAdvertiseDefaultIPv6RouteEnabled(BOOL *aAdvertiseDefaultIPv6Route)
525	{
526	*aAdvertiseDefaultIPv6Route = m->s.fAdvertiseDefaultIPv6Route;
527
528	return S_OK;
529	}
530
531
532	HRESULT NATNetwork::setAdvertiseDefaultIPv6RouteEnabled(const BOOL aAdvertiseDefaultIPv6Route)
533	{
534	{
535	AutoReadLock alockNatNetList(m->pVirtualBox->i_getNatNetLock() COMMA_LOCKVAL_SRC_POS);
536	if (m->pVirtualBox->i_isNatNetStarted(m->s.strNetworkName))
537	return setErrorBusy();
538
539	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
540
541	if (RT_BOOL(aAdvertiseDefaultIPv6Route) == m->s.fAdvertiseDefaultIPv6Route)
542	return S_OK;
543
544	m->s.fAdvertiseDefaultIPv6Route = RT_BOOL(aAdvertiseDefaultIPv6Route);
545
546	}
547
548	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
549	HRESULT rc = m->pVirtualBox->i_saveSettings();
550	ComAssertComRCRetRC(rc);
551
552	return S_OK;
553	}
554
555
556	HRESULT NATNetwork::getNeedDhcpServer(BOOL *aNeedDhcpServer)
557	{
558	*aNeedDhcpServer = m->s.fNeedDhcpServer;
559
560	return S_OK;
561	}
562
563	HRESULT NATNetwork::setNeedDhcpServer(const BOOL aNeedDhcpServer)
564	{
565	{
566	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
567
568	if (RT_BOOL(aNeedDhcpServer) == m->s.fNeedDhcpServer)
569	return S_OK;
570
571	m->s.fNeedDhcpServer = RT_BOOL(aNeedDhcpServer);
572
573	i_recalculateIpv4AddressAssignments();
574
575	}
576
577	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
578	HRESULT rc = m->pVirtualBox->i_saveSettings();
579	ComAssertComRCRetRC(rc);
580
581	return S_OK;
582	}
583
584	HRESULT NATNetwork::getLocalMappings(std::vector<com::Utf8Str> &aLocalMappings)
585	{
586	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
587
588	aLocalMappings.resize(m->s.llHostLoopbackOffsetList.size());
589	size_t i = 0;
590	for (settings::NATLoopbackOffsetList::const_iterator it = m->s.llHostLoopbackOffsetList.begin();
591	it != m->s.llHostLoopbackOffsetList.end(); ++it, ++i)
592	{
593	aLocalMappings[i] = Utf8StrFmt("%s=%d",
594	(*it).strLoopbackHostAddress.c_str(),
595	(*it).u32Offset);
596	}
597
598	return S_OK;
599	}
600
601	HRESULT NATNetwork::addLocalMapping(const com::Utf8Str &aHostId, LONG aOffset)
602	{
603	RTNETADDRIPV4 addr, net, mask;
604
605	int rc = RTNetStrToIPv4Addr(Utf8Str(aHostId).c_str(), &addr);
606	if (RT_FAILURE(rc))
607	return E_INVALIDARG;
608
609	/* check against 127/8 */
610	if ((RT_N2H_U32(addr.u) >> IN_CLASSA_NSHIFT) != IN_LOOPBACKNET)
611	return E_INVALIDARG;
612
613	/* check against networkid vs network mask */
614	rc = RTCidrStrToIPv4(Utf8Str(m->s.strIPv4NetworkCidr).c_str(), &net, &mask);
615	if (RT_FAILURE(rc))
616	return E_INVALIDARG;
617
618	if (((net.u + (uint32_t)aOffset) & mask.u) != net.u)
619	return E_INVALIDARG;
620
621	settings::NATLoopbackOffsetList::iterator it;
622
623	it = std::find(m->s.llHostLoopbackOffsetList.begin(),
624	m->s.llHostLoopbackOffsetList.end(),
625	aHostId);
626	if (it != m->s.llHostLoopbackOffsetList.end())
627	{
628	if (aOffset == 0) /* erase */
629	m->s.llHostLoopbackOffsetList.erase(it, it);
630	else /* modify */
631	{
632	settings::NATLoopbackOffsetList::iterator it1;
633	it1 = std::find(m->s.llHostLoopbackOffsetList.begin(),
634	m->s.llHostLoopbackOffsetList.end(),
635	(uint32_t)aOffset);
636	if (it1 != m->s.llHostLoopbackOffsetList.end())
637	return E_INVALIDARG; /* this offset is already registered. */
638
639	(*it).u32Offset = (uint32_t)aOffset;
640	}
641
642	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
643	return m->pVirtualBox->i_saveSettings();
644	}
645
646	/* injection */
647	it = std::find(m->s.llHostLoopbackOffsetList.begin(),
648	m->s.llHostLoopbackOffsetList.end(),
649	(uint32_t)aOffset);
650
651	if (it != m->s.llHostLoopbackOffsetList.end())
652	return E_INVALIDARG; /* offset is already registered. */
653
654	settings::NATHostLoopbackOffset off;
655	off.strLoopbackHostAddress = aHostId;
656	off.u32Offset = (uint32_t)aOffset;
657	m->s.llHostLoopbackOffsetList.push_back(off);
658
659	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
660	return m->pVirtualBox->i_saveSettings();
661	}
662
663
664	HRESULT NATNetwork::getLoopbackIp6(LONG *aLoopbackIp6)
665	{
666	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
667
668	*aLoopbackIp6 = (LONG)m->s.u32HostLoopback6Offset;
669	return S_OK;
670	}
671
672
673	HRESULT NATNetwork::setLoopbackIp6(LONG aLoopbackIp6)
674	{
675	{
676	AutoReadLock alockNatNetList(m->pVirtualBox->i_getNatNetLock() COMMA_LOCKVAL_SRC_POS);
677	if (m->pVirtualBox->i_isNatNetStarted(m->s.strNetworkName))
678	return setErrorBusy();
679
680	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
681
682	if (aLoopbackIp6 < 0)
683	return E_INVALIDARG;
684
685	if (static_cast<uint32_t>(aLoopbackIp6) == m->s.u32HostLoopback6Offset)
686	return S_OK;
687
688	m->s.u32HostLoopback6Offset = (uint32_t)aLoopbackIp6;
689	}
690
691	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
692	return m->pVirtualBox->i_saveSettings();
693	}
694
695
696	HRESULT NATNetwork::getPortForwardRules4(std::vector<com::Utf8Str> &aPortForwardRules4)
697	{
698	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
699	i_getPortForwardRulesFromMap(aPortForwardRules4,
700	m->s.mapPortForwardRules4);
701	return S_OK;
702	}
703
704	HRESULT NATNetwork::getPortForwardRules6(std::vector<com::Utf8Str> &aPortForwardRules6)
705	{
706	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
707	i_getPortForwardRulesFromMap(aPortForwardRules6,
708	m->s.mapPortForwardRules6);
709	return S_OK;
710	}
711
712	HRESULT NATNetwork::addPortForwardRule(BOOL aIsIpv6,
713	const com::Utf8Str &aPortForwardRuleName,
714	NATProtocol_T aProto,
715	const com::Utf8Str &aHostIp,
716	USHORT aHostPort,
717	const com::Utf8Str &aGuestIp,
718	USHORT aGuestPort)
719	{
720	{
721	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
722	Utf8Str name = aPortForwardRuleName;
723	Utf8Str proto;
724	settings::NATRule r;
725	settings::NATRulesMap &mapRules = aIsIpv6 ? m->s.mapPortForwardRules6 : m->s.mapPortForwardRules4;
726	switch (aProto)
727	{
728	case NATProtocol_TCP:
729	proto = "tcp";
730	break;
731	case NATProtocol_UDP:
732	proto = "udp";
733	break;
734	default:
735	return E_INVALIDARG;
736	}
737	if (name.isEmpty())
738	name = Utf8StrFmt("%s_[%s]%%%d_[%s]%%%d", proto.c_str(),
739	aHostIp.c_str(), aHostPort,
740	aGuestIp.c_str(), aGuestPort);
741
742	for (settings::NATRulesMap::iterator it = mapRules.begin(); it != mapRules.end(); ++it)
743	{
744	r = it->second;
745	if (it->first == name)
746	return setError(E_INVALIDARG,
747	tr("A NAT rule of this name already exists"));
748	if ( r.strHostIP == aHostIp
749	&& r.u16HostPort == aHostPort
750	&& r.proto == aProto)
751	return setError(E_INVALIDARG,
752	tr("A NAT rule for this host port and this host IP already exists"));
753	}
754
755	r.strName = name.c_str();
756	r.proto = aProto;
757	r.strHostIP = aHostIp;
758	r.u16HostPort = aHostPort;
759	r.strGuestIP = aGuestIp;
760	r.u16GuestPort = aGuestPort;
761	mapRules.insert(std::make_pair(name, r));
762	}
763	{
764	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
765	HRESULT rc = m->pVirtualBox->i_saveSettings();
766	ComAssertComRCRetRC(rc);
767	}
768
769	m->pVirtualBox->i_onNATNetworkPortForward(m->s.strNetworkName, TRUE, aIsIpv6,
770	aPortForwardRuleName, aProto,
771	aHostIp, aHostPort,
772	aGuestIp, aGuestPort);
773
774	/* Notify listeners listening on this network only */
775	::FireNATNetworkPortForwardEvent(m->pEventSource, m->s.strNetworkName, TRUE,
776	aIsIpv6, aPortForwardRuleName, aProto,
777	aHostIp, aHostPort,
778	aGuestIp, aGuestPort);
779
780	return S_OK;
781	}
782
783	HRESULT NATNetwork::removePortForwardRule(BOOL aIsIpv6, const com::Utf8Str &aPortForwardRuleName)
784	{
785	Utf8Str strHostIP;
786	Utf8Str strGuestIP;
787	uint16_t u16HostPort;
788	uint16_t u16GuestPort;
789	NATProtocol_T proto;
790
791	{
792	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
793	settings::NATRulesMap &mapRules = aIsIpv6 ? m->s.mapPortForwardRules6 : m->s.mapPortForwardRules4;
794	settings::NATRulesMap::iterator it = mapRules.find(aPortForwardRuleName);
795
796	if (it == mapRules.end())
797	return E_INVALIDARG;
798
799	strHostIP = it->second.strHostIP;
800	strGuestIP = it->second.strGuestIP;
801	u16HostPort = it->second.u16HostPort;
802	u16GuestPort = it->second.u16GuestPort;
803	proto = it->second.proto;
804
805	mapRules.erase(it);
806	}
807
808	{
809	AutoWriteLock vboxLock(m->pVirtualBox COMMA_LOCKVAL_SRC_POS);
810	HRESULT rc = m->pVirtualBox->i_saveSettings();
811	ComAssertComRCRetRC(rc);
812	}
813
814	m->pVirtualBox->i_onNATNetworkPortForward(m->s.strNetworkName, FALSE, aIsIpv6, aPortForwardRuleName, proto,
815	strHostIP, u16HostPort, strGuestIP, u16GuestPort);
816
817	/* Notify listeners listening on this network only */
818	::FireNATNetworkPortForwardEvent(m->pEventSource, m->s.strNetworkName, FALSE, aIsIpv6, aPortForwardRuleName, proto,
819	strHostIP, u16HostPort, strGuestIP, u16GuestPort);
820	return S_OK;
821	}
822
823
824	void NATNetwork::i_updateDomainNameOption(ComPtr<IHost> &host)
825	{
826	com::Bstr domain;
827	if (FAILED(host->COMGETTER(DomainName)(domain.asOutParam())))
828	LogRel(("NATNetwork: Failed to get host's domain name\n"));
829	ComPtr<IDHCPGlobalConfig> pDHCPConfig;
830	HRESULT hrc = m->dhcpServer->COMGETTER(GlobalConfig)(pDHCPConfig.asOutParam());
831	if (FAILED(hrc))
832	{
833	LogRel(("NATNetwork: Failed to get global DHCP config when updating domain name option with %Rhrc\n", hrc));
834	return;
835	}
836	if (domain.isNotEmpty())
837	{
838	hrc = pDHCPConfig->SetOption(DHCPOption_DomainName, DHCPOptionEncoding_Normal, domain.raw());
839	if (FAILED(hrc))
840	LogRel(("NATNetwork: Failed to add domain name option with %Rhrc\n", hrc));
841	}
842	else
843	pDHCPConfig->RemoveOption(DHCPOption_DomainName);
844	}
845
846	void NATNetwork::i_updateDomainNameServerOption(ComPtr<IHost> &host)
847	{
848	RTNETADDRIPV4 networkid, netmask;
849
850	int rc = RTCidrStrToIPv4(m->s.strIPv4NetworkCidr.c_str(), &networkid, &netmask);
851	if (RT_FAILURE(rc))
852	{
853	LogRel(("NATNetwork: Failed to parse cidr %s with %Rrc\n", m->s.strIPv4NetworkCidr.c_str(), rc));
854	return;
855	}
856
857	/* XXX: these are returned, surprisingly, in host order */
858	networkid.u = RT_H2N_U32(networkid.u);
859	netmask.u = RT_H2N_U32(netmask.u);
860
861	com::SafeArray<BSTR> nameServers;
862	HRESULT hrc = host->COMGETTER(NameServers)(ComSafeArrayAsOutParam(nameServers));
863	if (FAILED(hrc))
864	{
865	LogRel(("NATNetwork: Failed to get name servers from host with %Rhrc\n", hrc));
866	return;
867	}
868	ComPtr<IDHCPGlobalConfig> pDHCPConfig;
869	hrc = m->dhcpServer->COMGETTER(GlobalConfig)(pDHCPConfig.asOutParam());
870	if (FAILED(hrc))
871	{
872	LogRel(("NATNetwork: Failed to get global DHCP config when updating domain name server option with %Rhrc\n", hrc));
873	return;
874	}
875
876	size_t cAddresses = nameServers.size();
877	if (cAddresses)
878	{
879	RTCList<RTCString> lstServers;
880	/* The following code was copied (and adapted a bit) from VBoxNetDhcp::hostDnsServers */
881	/*
882	* Recent fashion is to run dnsmasq on 127.0.1.1 which we
883	* currently can't map. If that's the only nameserver we've got,
884	* we need to use DNS proxy for VMs to reach it.
885	*/
886	bool fUnmappedLoopback = false;
887
888	for (size_t i = 0; i < cAddresses; ++i)
889	{
890	RTNETADDRIPV4 addr;
891
892	com::Utf8Str strNameServerAddress(nameServers[i]);
893	rc = RTNetStrToIPv4Addr(strNameServerAddress.c_str(), &addr);
894	if (RT_FAILURE(rc))
895	{
896	LogRel(("NATNetwork: Failed to parse IP address %s with %Rrc\n", strNameServerAddress.c_str(), rc));
897	continue;
898	}
899
900	if (addr.u == INADDR_ANY)
901	{
902	/*
903	* This doesn't seem to be very well documented except for
904	* RTFS of res_init.c, but INADDR_ANY is a valid value for
905	* for "nameserver".
906	*/
907	addr.u = RT_H2N_U32_C(INADDR_LOOPBACK);
908	}
909
910	if (addr.au8[0] == 127)
911	{
912	settings::NATLoopbackOffsetList::const_iterator it;
913
914	it = std::find(m->s.llHostLoopbackOffsetList.begin(),
915	m->s.llHostLoopbackOffsetList.end(),
916	strNameServerAddress);
917	if (it == m->s.llHostLoopbackOffsetList.end())
918	{
919	fUnmappedLoopback = true;
920	continue;
921	}
922	addr.u = RT_H2N_U32(RT_N2H_U32(networkid.u) + it->u32Offset);
923	}
924	lstServers.append(RTCStringFmt("%RTnaipv4", addr));
925	}
926
927	if (lstServers.isEmpty() && fUnmappedLoopback)
928	lstServers.append(RTCStringFmt("%RTnaipv4", networkid.u \| RT_H2N_U32_C(1U))); /* proxy */
929
930	hrc = pDHCPConfig->SetOption(DHCPOption_DomainNameServers, DHCPOptionEncoding_Normal, Bstr(RTCString::join(lstServers, " ")).raw());
931	if (FAILED(hrc))
932	LogRel(("NATNetwork: Failed to add domain name server option '%s' with %Rhrc\n", RTCString::join(lstServers, " ").c_str(), hrc));
933	}
934	else
935	pDHCPConfig->RemoveOption(DHCPOption_DomainNameServers);
936	}
937
938	void NATNetwork::i_updateDnsOptions()
939	{
940	ComPtr<IHost> host;
941	if (SUCCEEDED(m->pVirtualBox->COMGETTER(Host)(host.asOutParam())))
942	{
943	i_updateDomainNameOption(host);
944	i_updateDomainNameServerOption(host);
945	}
946	}
947
948
949	HRESULT NATNetwork::start()
950	{
951	#ifdef VBOX_WITH_NAT_SERVICE
952	if (!m->s.fEnabled) return S_OK;
953	AssertReturn(!m->s.strNetworkName.isEmpty(), E_FAIL);
954
955	m->NATRunner.resetArguments();
956	m->NATRunner.addArgPair(NetworkServiceRunner::kpszKeyNetwork, Utf8Str(m->s.strNetworkName).c_str());
957
958	/* No portforwarding rules from command-line, all will be fetched via API */
959
960	if (m->s.fNeedDhcpServer)
961	{
962	/*
963	* Just to as idea... via API (on creation user pass the cidr of network and)
964	* and we calculate it's addreses (mutable?).
965	*/
966
967	/*
968	* Configuration and running DHCP server:
969	* 1. find server first createDHCPServer
970	* 2. if return status is E_INVALARG => server already exists just find and start.
971	* 3. if return status neither E_INVALRG nor S_OK => return E_FAIL
972	* 4. if return status S_OK proceed to DHCP server configuration
973	* 5. call setConfiguration() and pass all required parameters
974	* 6. start dhcp server.
975	*/
976	HRESULT hrc = m->pVirtualBox->FindDHCPServerByNetworkName(Bstr(m->s.strNetworkName).raw(),
977	m->dhcpServer.asOutParam());
978	switch (hrc)
979	{
980	case E_INVALIDARG:
981	/* server haven't beeen found let create it then */
982	hrc = m->pVirtualBox->CreateDHCPServer(Bstr(m->s.strNetworkName).raw(),
983	m->dhcpServer.asOutParam());
984	if (FAILED(hrc))
985	return E_FAIL;
986	/* breakthrough */
987
988	{
989	LogFunc(("gateway: %s, dhcpserver:%s, dhcplowerip:%s, dhcpupperip:%s\n",
990	m->IPv4Gateway.c_str(),
991	m->IPv4DhcpServer.c_str(),
992	m->IPv4DhcpServerLowerIp.c_str(),
993	m->IPv4DhcpServerUpperIp.c_str()));
994
995	hrc = m->dhcpServer->COMSETTER(Enabled)(true);
996
997	hrc = m->dhcpServer->SetConfiguration(Bstr(m->IPv4DhcpServer).raw(),
998	Bstr(m->IPv4NetworkMask).raw(),
999	Bstr(m->IPv4DhcpServerLowerIp).raw(),
1000	Bstr(m->IPv4DhcpServerUpperIp).raw());
1001	}
1002	case S_OK:
1003	break;
1004
1005	default:
1006	return E_FAIL;
1007	}
1008
1009	#ifdef VBOX_WITH_DHCPD
1010	i_updateDnsOptions();
1011	#endif /* VBOX_WITH_DHCPD */
1012	/* XXX: AddGlobalOption(DhcpOpt_Router,) - enables attachement of DhcpServer to Main (no longer true with VBoxNetDhcpd). */
1013	ComPtr<IDHCPGlobalConfig> pDHCPConfig;
1014	hrc = m->dhcpServer->COMGETTER(GlobalConfig)(pDHCPConfig.asOutParam());
1015	if (FAILED(hrc))
1016	{
1017	LogRel(("NATNetwork: Failed to get global DHCP config when updating IPv4 gateway option with %Rhrc\n", hrc));
1018	m->dhcpServer.setNull();
1019	return E_FAIL;
1020	}
1021	pDHCPConfig->SetOption(DHCPOption_Routers, DHCPOptionEncoding_Normal, Bstr(m->IPv4Gateway).raw());
1022
1023	hrc = m->dhcpServer->Start(Bstr::Empty.raw(), Bstr(TRUNKTYPE_WHATEVER).raw());
1024	if (FAILED(hrc))
1025	{
1026	m->dhcpServer.setNull();
1027	return E_FAIL;
1028	}
1029	}
1030
1031	if (RT_SUCCESS(m->NATRunner.start(false /* KillProcOnStop */)))
1032	{
1033	m->pVirtualBox->i_onNATNetworkStartStop(m->s.strNetworkName, TRUE);
1034	return S_OK;
1035	}
1036	/** @todo missing setError()! */
1037	return E_FAIL;
1038	#else
1039	ReturnComNotImplemented();
1040	#endif
1041	}
1042
1043	HRESULT NATNetwork::stop()
1044	{
1045	#ifdef VBOX_WITH_NAT_SERVICE
1046	m->pVirtualBox->i_onNATNetworkStartStop(m->s.strNetworkName, FALSE);
1047
1048	if (!m->dhcpServer.isNull())
1049	m->dhcpServer->Stop();
1050
1051	if (RT_SUCCESS(m->NATRunner.stop()))
1052	return S_OK;
1053
1054	/** @todo missing setError()! */
1055	return E_FAIL;
1056	#else
1057	ReturnComNotImplemented();
1058	#endif
1059	}
1060
1061
1062	void NATNetwork::i_getPortForwardRulesFromMap(std::vector<com::Utf8Str> &aPortForwardRules, settings::NATRulesMap &aRules)
1063	{
1064	aPortForwardRules.resize(aRules.size());
1065	size_t i = 0;
1066	for (settings::NATRulesMap::const_iterator it = aRules.begin();
1067	it != aRules.end(); ++it, ++i)
1068	{
1069	settings::NATRule r = it->second;
1070	aPortForwardRules[i] = Utf8StrFmt("%s:%s:[%s]:%d:[%s]:%d",
1071	r.strName.c_str(),
1072	(r.proto == NATProtocol_TCP ? "tcp" : "udp"),
1073	r.strHostIP.c_str(),
1074	r.u16HostPort,
1075	r.strGuestIP.c_str(),
1076	r.u16GuestPort);
1077	}
1078	}
1079
1080
1081	int NATNetwork::i_findFirstAvailableOffset(ADDRESSLOOKUPTYPE addrType, uint32_t *poff)
1082	{
1083	RTNETADDRIPV4 network, netmask;
1084
1085	int rc = RTCidrStrToIPv4(m->s.strIPv4NetworkCidr.c_str(),
1086	&network,
1087	&netmask);
1088	AssertRCReturn(rc, rc);
1089
1090	uint32_t off;
1091	for (off = 1; off < ~netmask.u; ++off)
1092	{
1093	bool skip = false;
1094	for (settings::NATLoopbackOffsetList::iterator it = m->s.llHostLoopbackOffsetList.begin();
1095	it != m->s.llHostLoopbackOffsetList.end();
1096	++it)
1097	{
1098	if ((*it).u32Offset == off)
1099	{
1100	skip = true;
1101	break;
1102	}
1103
1104	}
1105
1106	if (skip)
1107	continue;
1108
1109	if (off == m->offGateway)
1110	{
1111	if (addrType == ADDR_GATEWAY)
1112	break;
1113	else
1114	continue;
1115	}
1116
1117	if (off == m->offDhcp)
1118	{
1119	if (addrType == ADDR_DHCP)
1120	break;
1121	else
1122	continue;
1123	}
1124
1125	if (!skip)
1126	break;
1127	}
1128
1129	if (poff)
1130	*poff = off;
1131
1132	return VINF_SUCCESS;
1133	}
1134
1135	int NATNetwork::i_recalculateIpv4AddressAssignments()
1136	{
1137	RTNETADDRIPV4 network, netmask;
1138	int rc = RTCidrStrToIPv4(m->s.strIPv4NetworkCidr.c_str(),
1139	&network,
1140	&netmask);
1141	AssertRCReturn(rc, rc);
1142
1143	i_findFirstAvailableOffset(ADDR_GATEWAY, &m->offGateway);
1144	if (m->s.fNeedDhcpServer)
1145	i_findFirstAvailableOffset(ADDR_DHCP, &m->offDhcp);
1146
1147	/* I don't remember the reason CIDR calculated on the host. */
1148	RTNETADDRIPV4 gateway = network;
1149	gateway.u += m->offGateway;
1150	gateway.u = RT_H2N_U32(gateway.u);
1151	char szTmpIp[16];
1152	RTStrPrintf(szTmpIp, sizeof(szTmpIp), "%RTnaipv4", gateway);
1153	m->IPv4Gateway = szTmpIp;
1154
1155	if (m->s.fNeedDhcpServer)
1156	{
1157	RTNETADDRIPV4 dhcpserver = network;
1158	dhcpserver.u += m->offDhcp;
1159
1160	/* XXX: adding more services should change the math here */
1161	RTNETADDRIPV4 dhcplowerip = network;
1162	uint32_t offDhcpLowerIp;
1163	i_findFirstAvailableOffset(ADDR_DHCPLOWERIP, &offDhcpLowerIp);
1164	dhcplowerip.u = RT_H2N_U32(dhcplowerip.u + offDhcpLowerIp);
1165
1166	RTNETADDRIPV4 dhcpupperip;
1167	dhcpupperip.u = RT_H2N_U32((network.u \| ~netmask.u) - 1);
1168
1169	dhcpserver.u = RT_H2N_U32(dhcpserver.u);
1170	network.u = RT_H2N_U32(network.u);
1171
1172	RTStrPrintf(szTmpIp, sizeof(szTmpIp), "%RTnaipv4", dhcpserver);
1173	m->IPv4DhcpServer = szTmpIp;
1174	RTStrPrintf(szTmpIp, sizeof(szTmpIp), "%RTnaipv4", dhcplowerip);
1175	m->IPv4DhcpServerLowerIp = szTmpIp;
1176	RTStrPrintf(szTmpIp, sizeof(szTmpIp), "%RTnaipv4", dhcpupperip);
1177	m->IPv4DhcpServerUpperIp = szTmpIp;
1178
1179	LogFunc(("network:%RTnaipv4, dhcpserver:%RTnaipv4, dhcplowerip:%RTnaipv4, dhcpupperip:%RTnaipv4\n",
1180	network, dhcpserver, dhcplowerip, dhcpupperip));
1181	}
1182
1183	/* we need IPv4NetworkMask for NAT's gw service start */
1184	netmask.u = RT_H2N_U32(netmask.u);
1185	RTStrPrintf(szTmpIp, 16, "%RTnaipv4", netmask);
1186	m->IPv4NetworkMask = szTmpIp;
1187
1188	LogFlowFunc(("getaway:%RTnaipv4, netmask:%RTnaipv4\n", gateway, netmask));
1189	return VINF_SUCCESS;
1190	}
1191
1192
1193	int NATNetwork::i_recalculateIPv6Prefix()
1194	{
1195	int rc;
1196
1197	RTNETADDRIPV4 net, mask;
1198	rc = RTCidrStrToIPv4(Utf8Str(m->s.strIPv4NetworkCidr).c_str(), &net, &mask);
1199	if (RT_FAILURE(rc))
1200	return rc;
1201
1202	net.u = RT_H2N_U32(net.u); /* XXX: fix RTCidrStrToIPv4! */
1203
1204	/*
1205	* [fd17:625c:f037:XXXX::/64] - RFC 4193 (ULA) Locally Assigned
1206	* Global ID where XXXX, 16 bit Subnet ID, are two bytes from the
1207	* middle of the IPv4 address, e.g. :dead: for 10.222.173.1
1208	*/
1209	RTNETADDRIPV6 prefix;
1210	RT_ZERO(prefix);
1211
1212	prefix.au8[0] = 0xFD;
1213	prefix.au8[1] = 0x17;
1214
1215	prefix.au8[2] = 0x62;
1216	prefix.au8[3] = 0x5C;
1217
1218	prefix.au8[4] = 0xF0;
1219	prefix.au8[5] = 0x37;
1220
1221	prefix.au8[6] = net.au8[1];
1222	prefix.au8[7] = net.au8[2];
1223
1224	char szBuf[32];
1225	RTStrPrintf(szBuf, sizeof(szBuf), "%RTnaipv6/64", &prefix);
1226
1227	m->s.strIPv6Prefix = szBuf;
1228	return VINF_SUCCESS;
1229	}

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source: vbox/trunk/src/VBox/Main/src-server/NATNetworkImpl.cpp@ 93920

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