VBoxNetLwipNAT.cpp@ 49119

Last change on this file since 49119 was 49119, checked in by vboxsync, 12 years ago
VBoxNetNAT: drops Windows's limitation on registering listeners.
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File size: 37.2 KB

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1	/* $Id: VBoxNetLwipNAT.cpp 49119 2013-10-15 15:05:37Z vboxsync $ */
2	/** @file
3	* VBoxNetNAT - NAT Service for connecting to IntNet.
4	*/
5
6	/*
7	* Copyright (C) 2009 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.215389.xyz. 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 "winutils.h"
19
20	#include <VBox/com/com.h>
21	#include <VBox/com/listeners.h>
22	#include <VBox/com/string.h>
23	#include <VBox/com/Guid.h>
24	#include <VBox/com/array.h>
25	#include <VBox/com/ErrorInfo.h>
26	#include <VBox/com/errorprint.h>
27	#include <VBox/com/VirtualBox.h>
28	#include <VBox/com/NativeEventQueue.h>
29
30	#include <iprt/net.h>
31	#include <iprt/initterm.h>
32	#include <iprt/alloca.h>
33	#ifndef RT_OS_WINDOWS
34	# include <arpa/inet.h>
35	#endif
36	#include <iprt/err.h>
37	#include <iprt/time.h>
38	#include <iprt/timer.h>
39	#include <iprt/thread.h>
40	#include <iprt/stream.h>
41	#include <iprt/path.h>
42	#include <iprt/param.h>
43	#include <iprt/pipe.h>
44	#include <iprt/getopt.h>
45	#include <iprt/string.h>
46	#include <iprt/mem.h>
47	#include <iprt/message.h>
48	#include <iprt/req.h>
49	#include <iprt/file.h>
50	#include <iprt/semaphore.h>
51	#include <iprt/cpp/utils.h>
52	#define LOG_GROUP LOG_GROUP_NAT_SERVICE
53	#include <VBox/log.h>
54
55	#include <VBox/sup.h>
56	#include <VBox/intnet.h>
57	#include <VBox/intnetinline.h>
58	#include <VBox/vmm/pdmnetinline.h>
59	#include <VBox/vmm/vmm.h>
60	#include <VBox/version.h>
61
62	#ifndef RT_OS_WINDOWS
63	# include <sys/poll.h>
64	# include <sys/socket.h>
65	# include <netinet/in.h>
66	#endif
67
68	#include <vector>
69	#include <string>
70
71	#include "../NetLib/VBoxNetLib.h"
72	#include "../NetLib/VBoxNetBaseService.h"
73	#include "VBoxLwipCore.h"
74
75	extern "C"
76	{
77	/* bunch of LWIP headers */
78	#include "lwip/opt.h"
79	#ifdef LWIP_SOCKET
80	# undef LWIP_SOCKET
81	# define LWIP_SOCKET 0
82	#endif
83	#include "lwip/sys.h"
84	#include "lwip/stats.h"
85	#include "lwip/mem.h"
86	#include "lwip/memp.h"
87	#include "lwip/pbuf.h"
88	#include "lwip/netif.h"
89	#include "lwip/api.h"
90	#include "lwip/tcp_impl.h"
91	#include "ipv6/lwip/ethip6.h"
92	#include "lwip/nd6.h" // for proxy_na_hook
93	#include "lwip/mld6.h"
94	#include "lwip/udp.h"
95	#include "lwip/tcp.h"
96	#include "lwip/tcpip.h"
97	#include "lwip/sockets.h"
98	#include "netif/etharp.h"
99
100	#include "proxy.h"
101	#include "pxremap.h"
102	#include "portfwd.h"
103	}
104
105	#include "../NetLib/VBoxPortForwardString.h"
106
107	static RTGETOPTDEF g_aGetOptDef[] =
108	{
109	{ "--port-forward4", 'p', RTGETOPT_REQ_STRING },
110	{ "--port-forward6", 'P', RTGETOPT_REQ_STRING }
111	};
112
113	typedef struct NATSEVICEPORTFORWARDRULE
114	{
115	PORTFORWARDRULE Pfr;
116	fwspec FWSpec;
117	} NATSEVICEPORTFORWARDRULE, *PNATSEVICEPORTFORWARDRULE;
118
119	typedef std::vector<NATSEVICEPORTFORWARDRULE> VECNATSERVICEPF;
120	typedef VECNATSERVICEPF::iterator ITERATORNATSERVICEPF;
121	typedef VECNATSERVICEPF::const_iterator CITERATORNATSERVICEPF;
122
123
124	class VBoxNetLwipNAT;
125
126
127	class NATNetworkListener
128	{
129	public:
130	NATNetworkListener():m_pNAT(NULL){}
131
132	HRESULT init(VBoxNetLwipNAT *pNAT)
133	{
134	AssertPtrReturn(pNAT, E_INVALIDARG);
135
136	m_pNAT = pNAT;
137	return S_OK;
138	}
139
140	HRESULT init()
141	{
142	m_pNAT = NULL;
143	return S_OK;
144	}
145
146	void uninit() { m_pNAT = NULL; }
147
148	STDMETHOD(HandleEvent)(VBoxEventType_T aEventType, IEvent *pEvent);
149
150	private:
151	VBoxNetLwipNAT *m_pNAT;
152	};
153	typedef ListenerImpl<NATNetworkListener, VBoxNetLwipNAT *> NATNetworkListenerImpl;
154	VBOX_LISTENER_DECLARE(NATNetworkListenerImpl)
155
156
157	class VBoxNetLwipNAT: public VBoxNetBaseService
158	{
159	friend class NATNetworkListener;
160	public:
161	VBoxNetLwipNAT();
162	virtual ~VBoxNetLwipNAT();
163	void usage(){ /* @todo: should be implemented */ };
164	int run();
165	virtual int init(void);
166	/* @todo: when configuration would be really needed */
167	virtual int parseOpt(int rc, const RTGETOPTUNION& getOptVal);
168
169	private:
170	struct proxy_options m_ProxyOptions;
171	struct sockaddr_in m_src4;
172	struct sockaddr_in6 m_src6;
173	/**
174	* place for registered local interfaces.
175	*/
176	ip4_lomap m_lo2off[10];
177	ip4_lomap_desc m_loOptDescriptor;
178
179	uint16_t m_u16Mtu;
180	netif m_LwipNetIf;
181	/* Queues */
182	RTREQQUEUE hReqIntNet;
183	/* thread where we're waiting for a frames, no semaphores needed */
184	RTTHREAD hThrIntNetRecv;
185
186	/* Our NAT network descriptor in Main */
187	ComPtr<INATNetwork> net;
188	ComPtr<NATNetworkListenerImpl> m_listener;
189	STDMETHOD(HandleEvent)(VBoxEventType_T aEventType, IEvent *pEvent);
190
191	RTSEMEVENT hSemSVC;
192	/* Only for debug needs, by default NAT service should load rules from SVC
193	* on startup, and then on sync them on events.
194	*/
195	bool fDontLoadRulesOnStartup;
196	static void onLwipTcpIpInit(void *arg);
197	static void onLwipTcpIpFini(void *arg);
198	static err_t netifInit(netif *pNetif);
199	static err_t netifLinkoutput(netif pNetif, pbuf pBuf);
200	static int intNetThreadRecv(RTTHREAD, void *);
201	static void vboxNetLwipNATProcessXmit(void);
202
203	VECNATSERVICEPF m_vecPortForwardRule4;
204	VECNATSERVICEPF m_vecPortForwardRule6;
205
206	static int natServicePfRegister(NATSEVICEPORTFORWARDRULE& natServicePf);
207	static int natServiceProcessRegisteredPf(VECNATSERVICEPF& vecPf);
208	};
209
210
211	static VBoxNetLwipNAT *g_pLwipNat;
212
213	STDMETHODIMP NATNetworkListener::HandleEvent(VBoxEventType_T aEventType, IEvent *pEvent)
214	{
215	if (m_pNAT)
216	return m_pNAT->HandleEvent(aEventType, pEvent);
217	else
218	return E_FAIL;
219	}
220
221
222
223	STDMETHODIMP VBoxNetLwipNAT::HandleEvent(VBoxEventType_T aEventType,
224	IEvent *pEvent)
225	{
226	HRESULT hrc = S_OK;
227	switch (aEventType)
228	{
229	case VBoxEventType_OnNATNetworkSetting:
230	{
231	ComPtr<INATNetworkSettingEvent> evSettings(pEvent);
232	// XXX: only handle IPv6 default route for now
233
234	if (!m_ProxyOptions.ipv6_enabled)
235	{
236	break;
237	}
238
239	BOOL fIPv6DefaultRoute = FALSE;
240	hrc = evSettings->COMGETTER(AdvertiseDefaultIPv6RouteEnabled)(&fIPv6DefaultRoute);
241	AssertReturn(SUCCEEDED(hrc), hrc);
242
243	if (m_ProxyOptions.ipv6_defroute == fIPv6DefaultRoute)
244	{
245	break;
246	}
247
248	// XXX: TODO: should prod rtadvd for immediate unsolicited
249	// advertisement with new router lifetime
250	m_ProxyOptions.ipv6_defroute = fIPv6DefaultRoute;
251
252	break;
253	}
254
255	case VBoxEventType_OnNATNetworkPortForward:
256	{
257	com::Bstr name, strHostAddr, strGuestAddr;
258	LONG lHostPort, lGuestPort;
259	BOOL fCreateFW, fIPv6FW;
260	NATProtocol_T proto = NATProtocol_TCP;
261
262
263	ComPtr<INATNetworkPortForwardEvent> pfEvt = pEvent;
264
265	hrc = pfEvt->COMGETTER(Name)(name.asOutParam());
266	AssertReturn(SUCCEEDED(hrc), hrc);
267
268	hrc = pfEvt->COMGETTER(Proto)(&proto);
269	AssertReturn(SUCCEEDED(hrc), hrc);
270
271	hrc = pfEvt->COMGETTER(HostIp)(strHostAddr.asOutParam());
272	AssertReturn(SUCCEEDED(hrc), hrc);
273
274	hrc = pfEvt->COMGETTER(HostPort)(&lHostPort);
275	AssertReturn(SUCCEEDED(hrc), hrc);
276
277	hrc = pfEvt->COMGETTER(GuestIp)(strGuestAddr.asOutParam());
278	AssertReturn(SUCCEEDED(hrc), hrc);
279
280	hrc = pfEvt->COMGETTER(GuestPort)(&lGuestPort);
281	AssertReturn(SUCCEEDED(hrc), hrc);
282
283	hrc = pfEvt->COMGETTER(Create)(&fCreateFW);
284	AssertReturn(SUCCEEDED(hrc), hrc);
285
286	hrc = pfEvt->COMGETTER(Ipv6)(&fIPv6FW);
287	AssertReturn(SUCCEEDED(hrc), hrc);
288
289	VECNATSERVICEPF& rules = (fIPv6FW ?
290	m_vecPortForwardRule6 :
291	m_vecPortForwardRule4);
292
293	NATSEVICEPORTFORWARDRULE r;
294
295	RT_ZERO(r);
296
297	if (name.length() > sizeof(r.Pfr.szPfrName))
298	{
299	hrc = E_INVALIDARG;
300	goto port_forward_done;
301	}
302
303	switch (proto)
304	{
305	case NATProtocol_TCP:
306	r.Pfr.iPfrProto = IPPROTO_TCP;
307	break;
308	case NATProtocol_UDP:
309	r.Pfr.iPfrProto = IPPROTO_UDP;
310	break;
311	default:
312	goto port_forward_done;
313	}
314
315
316	RTStrPrintf(r.Pfr.szPfrName, sizeof(r.Pfr.szPfrName),
317	"%s", com::Utf8Str(name).c_str());
318
319	RTStrPrintf(r.Pfr.szPfrHostAddr, sizeof(r.Pfr.szPfrHostAddr),
320	"%s", com::Utf8Str(strHostAddr).c_str());
321
322	/* XXX: limits should be checked */
323	r.Pfr.u16PfrHostPort = (uint16_t)lHostPort;
324
325	RTStrPrintf(r.Pfr.szPfrGuestAddr, sizeof(r.Pfr.szPfrGuestAddr),
326	"%s", com::Utf8Str(strGuestAddr).c_str());
327
328	/* XXX: limits should be checked */
329	r.Pfr.u16PfrGuestPort = (uint16_t)lGuestPort;
330
331	if (fCreateFW) /* Addition */
332	{
333	rules.push_back(r);
334
335	natServicePfRegister(rules.back());
336	}
337	else /* Deletion */
338	{
339	ITERATORNATSERVICEPF it;
340	for (it = rules.begin(); it != rules.end(); ++it)
341	{
342	/* compare */
343	NATSEVICEPORTFORWARDRULE& natFw = *it;
344	if ( natFw.Pfr.iPfrProto == r.Pfr.iPfrProto
345	&& natFw.Pfr.u16PfrHostPort == r.Pfr.u16PfrHostPort
346	&& (strncmp(natFw.Pfr.szPfrHostAddr, r.Pfr.szPfrHostAddr, INET6_ADDRSTRLEN) == 0)
347	&& natFw.Pfr.u16PfrGuestPort == r.Pfr.u16PfrGuestPort
348	&& (strncmp(natFw.Pfr.szPfrGuestAddr, r.Pfr.szPfrGuestAddr, INET6_ADDRSTRLEN) == 0))
349	{
350	fwspec pFwCopy = (fwspec )RTMemAllocZ(sizeof(fwspec));
351	if (!pFwCopy)
352	{
353	break;
354	}
355	memcpy(pFwCopy, &natFw.FWSpec, sizeof(fwspec));
356
357	/* We shouldn't care about pFwCopy this memory will be freed when
358	* will message will arrive to the destination.
359	*/
360	portfwd_rule_del(pFwCopy);
361
362	rules.erase(it);
363	break;
364	}
365	} /* loop over vector elements */
366	} /* condition add or delete */
367	port_forward_done:
368	/* clean up strings */
369	name.setNull();
370	strHostAddr.setNull();
371	strGuestAddr.setNull();
372	break;
373	}
374	}
375	return hrc;
376	}
377
378
379	void VBoxNetLwipNAT::onLwipTcpIpInit(void* arg)
380	{
381	AssertPtrReturnVoid(arg);
382	VBoxNetLwipNAT pNat = static_cast<VBoxNetLwipNAT >(arg);
383
384	HRESULT hrc = com::Initialize();
385	Assert(!FAILED(hrc));
386
387	proxy_arp_hook = pxremap_proxy_arp;
388	proxy_ip4_divert_hook = pxremap_ip4_divert;
389
390	proxy_na_hook = pxremap_proxy_na;
391	proxy_ip6_divert_hook = pxremap_ip6_divert;
392
393	/* lwip thread */
394	RTNETADDRIPV4 IpNetwork;
395	IpNetwork.u = g_pLwipNat->m_Ipv4Address.u & g_pLwipNat->m_Ipv4Netmask.u;
396
397	ip_addr LwipIpAddr, LwipIpNetMask, LwipIpNetwork;
398
399	memcpy(&LwipIpAddr, &g_pLwipNat->m_Ipv4Address, sizeof(ip_addr));
400	memcpy(&LwipIpNetMask, &g_pLwipNat->m_Ipv4Netmask, sizeof(ip_addr));
401	memcpy(&LwipIpNetwork, &IpNetwork, sizeof(ip_addr));
402
403	netif pNetif = netif_add(&g_pLwipNat->m_LwipNetIf / Lwip Interface */,
404	&LwipIpAddr /* IP address*/,
405	&LwipIpNetMask /* Network mask */,
406	&LwipIpAddr /* gateway address, @todo: is self IP acceptable? */,
407	g_pLwipNat /* state */,
408	VBoxNetLwipNAT::netifInit /* netif_init_fn */,
409	lwip_tcpip_input /* netif_input_fn */);
410
411	AssertPtrReturnVoid(pNetif);
412
413	netif_set_up(pNetif);
414	netif_set_link_up(pNetif);
415
416	if (pNat->m_ProxyOptions.ipv6_enabled) {
417	/*
418	* XXX: lwIP currently only ever calls mld6_joingroup() in
419	* nd6_tmr() for fresh tentative addresses, which is a wrong place
420	* to do it - but I'm not keen on fixing this properly for now
421	* (with correct handling of interface up and down transitions,
422	* etc). So stick it here as a kludge.
423	*/
424	for (int i = 0; i <= 1; ++i) {
425	ip6_addr_t *paddr = netif_ip6_addr(pNetif, i);
426
427	ip6_addr_t solicited_node_multicast_address;
428	ip6_addr_set_solicitednode(&solicited_node_multicast_address,
429	paddr->addr[3]);
430	mld6_joingroup(paddr, &solicited_node_multicast_address);
431	}
432
433	/*
434	* XXX: We must join the solicited-node multicast for the
435	* addresses we do IPv6 NA-proxy for. We map IPv6 loopback to
436	* proxy address + 1. We only need the low 24 bits, and those are
437	* fixed.
438	*/
439	{
440	ip6_addr_t solicited_node_multicast_address;
441
442	ip6_addr_set_solicitednode(&solicited_node_multicast_address,
443	/* last 24 bits of the address */
444	PP_HTONL(0x00000002));
445	mld6_netif_joingroup(pNetif, &solicited_node_multicast_address);
446	}
447	}
448
449	proxy_init(&g_pLwipNat->m_LwipNetIf, &g_pLwipNat->m_ProxyOptions);
450
451	natServiceProcessRegisteredPf(g_pLwipNat->m_vecPortForwardRule4);
452	natServiceProcessRegisteredPf(g_pLwipNat->m_vecPortForwardRule6);
453	}
454
455
456	void VBoxNetLwipNAT::onLwipTcpIpFini(void* arg)
457	{
458	AssertPtrReturnVoid(arg);
459	VBoxNetLwipNAT pThis = (VBoxNetLwipNAT )arg;
460
461	/* XXX: proxy finalization */
462	netif_set_link_down(&g_pLwipNat->m_LwipNetIf);
463	netif_set_down(&g_pLwipNat->m_LwipNetIf);
464	netif_remove(&g_pLwipNat->m_LwipNetIf);
465
466	}
467
468	/*
469	* Callback for netif_add() to initialize the interface.
470	*/
471	err_t VBoxNetLwipNAT::netifInit(netif *pNetif)
472	{
473	err_t rcLwip = ERR_OK;
474
475	AssertPtrReturn(pNetif, ERR_ARG);
476
477	VBoxNetLwipNAT pNat = static_cast<VBoxNetLwipNAT >(pNetif->state);
478	AssertPtrReturn(pNat, ERR_ARG);
479
480	LogFlowFunc(("ENTER: pNetif[%c%c%d]\n", pNetif->name[0], pNetif->name[1], pNetif->num));
481	/* validity */
482	AssertReturn( pNetif->name[0] == 'N'
483	&& pNetif->name[1] == 'T', ERR_ARG);
484
485
486	pNetif->hwaddr_len = sizeof(RTMAC);
487	memcpy(pNetif->hwaddr, &pNat->m_MacAddress, sizeof(RTMAC));
488
489	pNat->m_u16Mtu = 1500; // XXX: FIXME
490	pNetif->mtu = pNat->m_u16Mtu;
491
492	pNetif->flags = NETIF_FLAG_BROADCAST
493	\| NETIF_FLAG_ETHARP /* Don't bother driver with ARP and let Lwip resolve ARP handling */
494	\| NETIF_FLAG_ETHERNET; /* Lwip works with ethernet too */
495
496	pNetif->linkoutput = netifLinkoutput; /* ether-level-pipe */
497	pNetif->output = lwip_etharp_output; /* ip-pipe */
498
499	if (pNat->m_ProxyOptions.ipv6_enabled) {
500	pNetif->output_ip6 = ethip6_output;
501
502	/* IPv6 link-local address in slot 0 */
503	netif_create_ip6_linklocal_address(pNetif, /* :from_mac_48bit */ 1);
504	netif_ip6_addr_set_state(pNetif, 0, IP6_ADDR_PREFERRED); // skip DAD
505
506	/*
507	* RFC 4193 Locally Assigned Global ID (ULA) in slot 1
508	* [fd17:625c:f037:XXXX::1] where XXXX, 16 bit Subnet ID, are two
509	* bytes from the middle of the IPv4 address, e.g. :dead: for
510	* 10.222.173.1
511	*/
512	u8_t nethi = ip4_addr2(&pNetif->ip_addr);
513	u8_t netlo = ip4_addr3(&pNetif->ip_addr);
514
515	ip6_addr_t *paddr = netif_ip6_addr(pNetif, 1);
516	IP6_ADDR(paddr, 0, 0xFD, 0x17, 0x62, 0x5C);
517	IP6_ADDR(paddr, 1, 0xF0, 0x37, nethi, netlo);
518	IP6_ADDR(paddr, 2, 0x00, 0x00, 0x00, 0x00);
519	IP6_ADDR(paddr, 3, 0x00, 0x00, 0x00, 0x01);
520	netif_ip6_addr_set_state(pNetif, 1, IP6_ADDR_PREFERRED);
521
522	#if LWIP_IPV6_SEND_ROUTER_SOLICIT
523	pNetif->rs_count = 0;
524	#endif
525	}
526
527	LogFlowFunc(("LEAVE: %d\n", rcLwip));
528	return rcLwip;
529	}
530
531
532	/**
533	* Intnet-recv thread
534	*/
535	int VBoxNetLwipNAT::intNetThreadRecv(RTTHREAD, void *)
536	{
537	int rc = VINF_SUCCESS;
538
539	/* 1. initialization and connection */
540	HRESULT hrc = com::Initialize();
541	if (FAILED(hrc))
542	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Failed to initialize COM!");
543
544	/* Well we're ready */
545	PINTNETRINGBUF pRingBuf = &g_pLwipNat->m_pIfBuf->Recv;
546
547	for (;;)
548	{
549	/*
550	* Wait for a packet to become available.
551	*/
552	/* 2. waiting for request for */
553	rc = g_pLwipNat->waitForIntNetEvent(2000);
554	if (RT_FAILURE(rc))
555	{
556	if (rc == VERR_TIMEOUT \|\| rc == VERR_INTERRUPTED)
557	{
558	/* do we want interrupt anyone ??? */
559	continue;
560	}
561	LogRel(("VBoxNetNAT: waitForIntNetEvent returned %Rrc\n", rc));
562	AssertRCReturn(rc,ERR_IF);
563	}
564
565	/*
566	* Process the receive buffer.
567	*/
568	PCINTNETHDR pHdr;
569
570	while ((pHdr = IntNetRingGetNextFrameToRead(pRingBuf)) != NULL)
571	{
572	uint8_t const u8Type = pHdr->u8Type;
573	size_t cbFrame = pHdr->cbFrame;
574	uint8_t *pu8Frame = NULL;
575	pbuf *pPbufHdr = NULL;
576	pbuf *pPbuf = NULL;
577	switch (u8Type)
578	{
579
580	case INTNETHDR_TYPE_FRAME:
581	/* @todo:should it be really here?
582	* Well well well, we're accessing lwip code here
583	*/
584	pPbufHdr = pPbuf = pbuf_alloc(PBUF_RAW, pHdr->cbFrame, PBUF_POOL);
585	if (!pPbuf)
586	{
587	LogRel(("NAT: Can't allocate send buffer cbFrame=%u\n", cbFrame));
588	break;
589	}
590	Assert(pPbufHdr->tot_len == cbFrame);
591	pu8Frame = (uint8_t *)IntNetHdrGetFramePtr(pHdr, g_pLwipNat->m_pIfBuf);
592	while(pPbuf)
593	{
594	memcpy(pPbuf->payload, pu8Frame, pPbuf->len);
595	pu8Frame += pPbuf->len;
596	pPbuf = pPbuf->next;
597	}
598
599	g_pLwipNat->m_LwipNetIf.input(pPbufHdr, &g_pLwipNat->m_LwipNetIf);
600
601	AssertReleaseRC(rc);
602	break;
603	case INTNETHDR_TYPE_GSO:
604	{
605	PCPDMNETWORKGSO pGso = IntNetHdrGetGsoContext(pHdr,
606	g_pLwipNat->m_pIfBuf);
607	if (!PDMNetGsoIsValid(pGso, cbFrame,
608	cbFrame - sizeof(PDMNETWORKGSO)))
609	break;
610	cbFrame -= sizeof(PDMNETWORKGSO);
611	uint8_t abHdrScratch[256];
612	uint32_t const cSegs = PDMNetGsoCalcSegmentCount(pGso,
613	cbFrame);
614	for (size_t iSeg = 0; iSeg < cSegs; iSeg++)
615	{
616	uint32_t cbSegFrame;
617	void *pvSegFrame =
618	PDMNetGsoCarveSegmentQD(pGso,
619	(uint8_t *)(pGso + 1),
620	cbFrame,
621	abHdrScratch,
622	iSeg,
623	cSegs,
624	&cbSegFrame);
625
626	pPbuf = pbuf_alloc(PBUF_RAW, cbSegFrame, PBUF_POOL);
627	if (!pPbuf)
628	{
629	LogRel(("NAT: Can't allocate send buffer cbFrame=%u\n", cbSegFrame));
630	break;
631	}
632	Assert( !pPbuf->next
633	&& pPbuf->len == cbSegFrame);
634	memcpy(pPbuf->payload, pvSegFrame, cbSegFrame);
635	g_pLwipNat->m_LwipNetIf.input(pPbuf, &g_pLwipNat->m_LwipNetIf);
636
637	}
638
639	}
640	break;
641	case INTNETHDR_TYPE_PADDING:
642	break;
643	default:
644	STAM_REL_COUNTER_INC(&g_pLwipNat->m_pIfBuf->cStatBadFrames);
645	break;
646	}
647	IntNetRingSkipFrame(&g_pLwipNat->m_pIfBuf->Recv);
648
649	} /* loop */
650	}
651	/* 3. deinitilization and termination */
652	LogFlowFuncLeaveRC(rc);
653	return rc;
654	}
655
656
657	/**
658	*
659	*/
660	void VBoxNetLwipNAT::vboxNetLwipNATProcessXmit()
661	{
662	int rc = VINF_SUCCESS;
663	INTNETIFSENDREQ SendReq;
664	SendReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
665	SendReq.Hdr.cbReq = sizeof(SendReq);
666	SendReq.pSession = g_pLwipNat->m_pSession;
667	SendReq.hIf = g_pLwipNat->m_hIf;
668	rc = SUPR3CallVMMR0Ex(NIL_RTR0PTR, NIL_VMCPUID, VMMR0_DO_INTNET_IF_SEND, 0, &SendReq.Hdr);
669	AssertRC(rc);
670	}
671
672
673	err_t VBoxNetLwipNAT::netifLinkoutput(netif pNetif, pbuf pPBuf)
674	{
675	int rc = VINF_SUCCESS;
676	err_t rcLwip = ERR_OK;
677	AssertPtrReturn(pNetif, ERR_ARG);
678	AssertPtrReturn(pPBuf, ERR_ARG);
679	AssertReturn((void *)g_pLwipNat == pNetif->state, ERR_ARG);
680	LogFlowFunc(("ENTER: pNetif[%c%c%d], pPbuf:%p\n",
681	pNetif->name[0],
682	pNetif->name[1],
683	pNetif->num,
684	pPBuf));
685
686	/*
687	* We're on the lwip thread ...
688	* try accure Xmit lock (actually we DO accure the lock ... )
689	* 1. we've entered csXmit so we should create frame
690	* 1.a. Frame creation success see 2.
691	* 1.b. (hm ... what about queue processing in place)
692	* 1.c. 2nd attempt create frame
693	* 1.d. Unlock the Xmit
694	* 1.e. goto BUSY.1
695	* 2. Copy pbuf to the frame
696	* 3. Send
697	* 4. leave csXmit & return.
698	*
699	* @todo: perhaps we can use it for optimization,
700	* e.g. drop UDP and reoccure lock on TCP NOTE: now BUSY is unachievable!
701	* Otherwise (BUSY)
702	* 1. Unbuffered (drop)
703	* (buffered)
704	* 1. Copy pbuf to entermediate buffer.
705	* 2. Add call buffer to the queue
706	* 3. return.
707	*/
708	/* see p.1 */
709	rc = VINF_SUCCESS;
710	PINTNETHDR pHdr = NULL;
711	uint8_t *pu8Frame = NULL;
712	int offFrame = 0;
713	int idxSg = 0;
714	struct pbuf *pPBufPtr = pPBuf;
715	/* Allocate frame, and pad it if required. */
716	rc = IntNetRingAllocateFrame(&g_pLwipNat->m_pIfBuf->Send, pPBuf->tot_len, &pHdr, (void **)&pu8Frame);
717	if (RT_SUCCESS(rc))
718	{
719	/* see p. 2 */
720	while (pPBufPtr)
721	{
722	memcpy(&pu8Frame[offFrame], pPBufPtr->payload, pPBufPtr->len);
723	offFrame += pPBufPtr->len;
724	pPBufPtr = pPBufPtr->next;
725	}
726	}
727	if (RT_FAILURE(rc))
728	{
729	/* Could it be that some frames are still in the ring buffer */
730	/* 1.c */
731	AssertMsgFailed(("Debug Me!"));
732	}
733
734	/* Commit - what really this function do */
735	IntNetRingCommitFrameEx(&g_pLwipNat->m_pIfBuf->Send, pHdr, pPBuf->tot_len);
736
737	g_pLwipNat->vboxNetLwipNATProcessXmit();
738
739	AssertRCReturn(rc, ERR_IF);
740	LogFlowFunc(("LEAVE: %d\n", rcLwip));
741	return rcLwip;
742	}
743
744
745	VBoxNetLwipNAT::VBoxNetLwipNAT()
746	{
747	LogFlowFuncEnter();
748
749	m_ProxyOptions.ipv6_enabled = 0;
750	m_ProxyOptions.ipv6_defroute = 0;
751	m_ProxyOptions.tftp_root = NULL;
752	m_ProxyOptions.src4 = NULL;
753	m_ProxyOptions.src6 = NULL;
754	memset(&m_src4, 0, sizeof(m_src4));
755	memset(&m_src6, 0, sizeof(m_src6));
756	m_src4.sin_family = AF_INET;
757	m_src6.sin6_family = AF_INET6;
758	#if HAVE_SA_LEN
759	m_src4.sin_len = sizeof(m_src4);
760	m_src6.sin6_len = sizeof(m_src6);
761	#endif
762
763	m_LwipNetIf.name[0] = 'N';
764	m_LwipNetIf.name[1] = 'T';
765	m_MacAddress.au8[0] = 0x52;
766	m_MacAddress.au8[1] = 0x54;
767	m_MacAddress.au8[2] = 0;
768	m_MacAddress.au8[3] = 0x12;
769	m_MacAddress.au8[4] = 0x35;
770	m_MacAddress.au8[5] = 0;
771	m_Ipv4Address.u = RT_MAKE_U32_FROM_U8( 10, 0, 2, 2); // NB: big-endian
772	m_Ipv4Netmask.u = RT_H2N_U32_C(0xffffff00);
773
774	fDontLoadRulesOnStartup = false;
775
776	for(unsigned int i = 0; i < RT_ELEMENTS(g_aGetOptDef); ++i)
777	m_vecOptionDefs.push_back(&g_aGetOptDef[i]);
778
779	m_enmTrunkType = kIntNetTrunkType_SrvNat;
780
781	LogFlowFuncLeave();
782	}
783
784
785	VBoxNetLwipNAT::~VBoxNetLwipNAT()
786	{
787	if (m_ProxyOptions.tftp_root != NULL)
788	{
789	RTStrFree((char *)m_ProxyOptions.tftp_root);
790	}
791	}
792
793
794	int VBoxNetLwipNAT::natServicePfRegister(NATSEVICEPORTFORWARDRULE& natPf)
795	{
796	int lrc = 0;
797	int rc = VINF_SUCCESS;
798	int socketSpec = SOCK_STREAM;
799	char *pszHostAddr;
800	int sockFamily = (natPf.Pfr.fPfrIPv6 ? PF_INET6 : PF_INET);
801
802	switch(natPf.Pfr.iPfrProto)
803	{
804	case IPPROTO_TCP:
805	socketSpec = SOCK_STREAM;
806	break;
807	case IPPROTO_UDP:
808	socketSpec = SOCK_DGRAM;
809	break;
810	default:
811	return VERR_IGNORED; /* Ah, just ignore the garbage */
812	}
813
814	pszHostAddr = natPf.Pfr.szPfrHostAddr;
815
816	/* XXX: workaround for inet_pton and an empty ipv4 address
817	* in rule declaration.
818	*/
819	if ( sockFamily == PF_INET
820	&& pszHostAddr[0] == 0)
821	pszHostAddr = (char )"0.0.0.0"; / XXX: fix it! without type cast */
822
823
824	lrc = fwspec_set(&natPf.FWSpec,
825	sockFamily,
826	socketSpec,
827	pszHostAddr,
828	natPf.Pfr.u16PfrHostPort,
829	natPf.Pfr.szPfrGuestAddr,
830	natPf.Pfr.u16PfrGuestPort);
831
832	AssertReturn(!lrc, VERR_IGNORED);
833
834	fwspec pFwCopy = (fwspec )RTMemAllocZ(sizeof(fwspec));
835	AssertPtrReturn(pFwCopy, VERR_IGNORED);
836
837	/*
838	* We need pass the copy, because we can't be sure
839	* how much this pointer will be valid in LWIP environment.
840	*/
841	memcpy(pFwCopy, &natPf.FWSpec, sizeof(fwspec));
842
843	lrc = portfwd_rule_add(pFwCopy);
844
845	AssertReturn(!lrc, VERR_IGNORED);
846
847	return VINF_SUCCESS;
848	}
849
850
851	int VBoxNetLwipNAT::natServiceProcessRegisteredPf(VECNATSERVICEPF& vecRules){
852	ITERATORNATSERVICEPF it;
853	for (it = vecRules.begin();
854	it != vecRules.end(); ++it)
855	{
856	int rc = natServicePfRegister((*it));
857	if (RT_FAILURE(rc))
858	{
859	LogRel(("PF: %s is ignored\n", (*it).Pfr.szPfrName));
860	continue;
861	}
862	}
863	return VINF_SUCCESS;
864	}
865
866
867	int VBoxNetLwipNAT::init()
868	{
869	com::Bstr bstr;
870	int rc = VINF_SUCCESS;
871	LogFlowFuncEnter();
872
873
874	/* virtualbox initialized in super class */
875
876	HRESULT hrc;
877	hrc = virtualbox->FindNATNetworkByName(com::Bstr(m_Network.c_str()).raw(),
878	net.asOutParam());
879	AssertComRCReturn(hrc, VERR_NOT_FOUND);
880
881	BOOL fIPv6Enabled = FALSE;
882	hrc = net->COMGETTER(IPv6Enabled)(&fIPv6Enabled);
883	AssertComRCReturn(hrc, VERR_NOT_FOUND);
884
885	BOOL fIPv6DefaultRoute = FALSE;
886	if (fIPv6Enabled)
887	{
888	hrc = net->COMGETTER(AdvertiseDefaultIPv6RouteEnabled)(&fIPv6DefaultRoute);
889	AssertComRCReturn(hrc, VERR_NOT_FOUND);
890	}
891
892	m_ProxyOptions.ipv6_enabled = fIPv6Enabled;
893	m_ProxyOptions.ipv6_defroute = fIPv6DefaultRoute;
894
895	/* XXX: Temporaly disabled this code on Windows for further debugging */
896	ComPtr<IEventSource> pES;
897
898	hrc = net->COMGETTER(EventSource)(pES.asOutParam());
899	AssertComRC(hrc);
900
901	ComObjPtr<NATNetworkListenerImpl> listener;
902	hrc = listener.createObject();
903	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
904
905	hrc = listener->init(new NATNetworkListener(), this);
906	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
907
908	com::SafeArray<VBoxEventType_T> events;
909	events.push_back(VBoxEventType_OnNATNetworkPortForward);
910	events.push_back(VBoxEventType_OnNATNetworkSetting);
911
912	hrc = pES->RegisterListener(listener, ComSafeArrayAsInParam(events), true);
913	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
914
915	m_listener = listener;
916
917	com::Bstr bstrSourceIp4Key = com::BstrFmt("NAT/%s/SourceIp4",m_Network.c_str());
918	com::Bstr bstrSourceIpX;
919	RTNETADDRIPV4 addr;
920	hrc = virtualbox->GetExtraData(bstrSourceIp4Key.raw(), bstrSourceIpX.asOutParam());
921	if (SUCCEEDED(hrc))
922	{
923	rc = RTNetStrToIPv4Addr(com::Utf8Str(bstrSourceIpX).c_str(), &addr);
924	if (RT_SUCCESS(rc))
925	{
926	RT_ZERO(m_src4);
927
928	m_src4.sin_addr.s_addr = addr.u;
929	m_ProxyOptions.src4 = &m_src4;
930
931	bstrSourceIpX.setNull();
932	}
933	}
934
935	if (!fDontLoadRulesOnStartup)
936	{
937	/* XXX: extract function and do not duplicate */
938	com::SafeArray<BSTR> rules;
939	hrc = net->COMGETTER(PortForwardRules4)(ComSafeArrayAsOutParam(rules));
940	Assert(SUCCEEDED(hrc));
941
942	size_t idxRules = 0;
943	for (idxRules = 0; idxRules < rules.size(); ++idxRules)
944	{
945	Log(("%d-rule: %ls\n", idxRules, rules[idxRules]));
946	NATSEVICEPORTFORWARDRULE Rule;
947	RT_ZERO(Rule);
948	rc = netPfStrToPf(com::Utf8Str(rules[idxRules]).c_str(), 0, &Rule.Pfr);
949	AssertRC(rc);
950	m_vecPortForwardRule4.push_back(Rule);
951	}
952
953	rules.setNull();
954	hrc = net->COMGETTER(PortForwardRules6)(ComSafeArrayAsOutParam(rules));
955	Assert(SUCCEEDED(hrc));
956
957	for (idxRules = 0; idxRules < rules.size(); ++idxRules)
958	{
959	Log(("%d-rule: %ls\n", idxRules, rules[idxRules]));
960	NATSEVICEPORTFORWARDRULE Rule;
961	netPfStrToPf(com::Utf8Str(rules[idxRules]).c_str(), 1, &Rule.Pfr);
962	m_vecPortForwardRule6.push_back(Rule);
963	}
964	} /* if (!fDontLoadRulesOnStartup) */
965
966	com::SafeArray<BSTR> strs;
967	int count_strs;
968	hrc = net->COMGETTER(LocalMappings)(ComSafeArrayAsOutParam(strs));
969	if ( SUCCEEDED(hrc)
970	&& (count_strs = strs.size()))
971	{
972	unsigned int j = 0;
973	int i;
974
975	for (i = 0; i < count_strs && j < RT_ELEMENTS(m_lo2off); ++i)
976	{
977	char szAddr[17];
978	RTNETADDRIPV4 ip4addr;
979	char *pszTerm;
980	uint32_t u32Off;
981	com::Utf8Str strLo2Off(strs[i]);
982	const char *pszLo2Off = strLo2Off.c_str();
983
984	RT_ZERO(szAddr);
985
986	pszTerm = RTStrStr(pszLo2Off, "=");
987
988	if ( !pszTerm
989	\|\| (pszTerm - pszLo2Off) >= 17)
990	continue;
991
992	memcpy(szAddr, pszLo2Off, (pszTerm - pszLo2Off));
993	rc = RTNetStrToIPv4Addr(szAddr, &ip4addr);
994	if (RT_FAILURE(rc))
995	continue;
996
997	u32Off = RTStrToUInt32(pszTerm + 1);
998	if (u32Off == 0)
999	continue;
1000
1001	ip4_addr_set_u32(&m_lo2off[j].loaddr, ip4addr.u);
1002	m_lo2off[j].off = u32Off;
1003	++j;
1004	}
1005
1006	m_loOptDescriptor.lomap = m_lo2off;
1007	m_loOptDescriptor.num_lomap = j;
1008	m_ProxyOptions.lomap_desc = &m_loOptDescriptor;
1009	}
1010
1011	hrc = virtualbox->COMGETTER(HomeFolder)(bstr.asOutParam());
1012	AssertComRCReturn(hrc, VERR_NOT_FOUND);
1013	if (!bstr.isEmpty())
1014	{
1015	com::Utf8Str strTftpRoot(com::Utf8StrFmt("%ls%c%s",
1016	bstr.raw(), RTPATH_DELIMITER, "TFTP"));
1017	char pszStrTemp; // avoid const char * vs char **
1018	rc = RTStrUtf8ToCurrentCP(&pszStrTemp, strTftpRoot.c_str());
1019	AssertRC(rc);
1020	m_ProxyOptions.tftp_root = pszStrTemp;
1021	}
1022
1023	/* end of COM initialization */
1024
1025	rc = RTSemEventCreate(&hSemSVC);
1026	AssertRCReturn(rc, rc);
1027
1028	rc = RTReqQueueCreate(&hReqIntNet);
1029	AssertRCReturn(rc, rc);
1030
1031	g_pLwipNat->tryGoOnline();
1032	vboxLwipCoreInitialize(VBoxNetLwipNAT::onLwipTcpIpInit, this);
1033
1034	rc = RTThreadCreate(&g_pLwipNat->hThrIntNetRecv, /* thread handle*/
1035	VBoxNetLwipNAT::intNetThreadRecv, /* routine */
1036	NULL, /* user data */
1037	128 * _1K, /* stack size */
1038	RTTHREADTYPE_IO, /* type */
1039	0, /* flags, @todo: waitable ?*/
1040	"INTNET-RECV");
1041	AssertRCReturn(rc,rc);
1042
1043
1044
1045	LogFlowFuncLeaveRC(rc);
1046	return rc;
1047	}
1048
1049
1050	int VBoxNetLwipNAT::parseOpt(int rc, const RTGETOPTUNION& Val)
1051	{
1052	switch (rc)
1053	{
1054	case 'p':
1055	case 'P':
1056	{
1057	NATSEVICEPORTFORWARDRULE Rule;
1058	VECNATSERVICEPF& rules = (rc == 'P'?
1059	m_vecPortForwardRule6
1060	: m_vecPortForwardRule4);
1061
1062	fDontLoadRulesOnStartup = true;
1063
1064	RT_ZERO(Rule);
1065
1066	int irc = netPfStrToPf(Val.psz, (rc == 'P'), &Rule.Pfr);
1067	rules.push_back(Rule);
1068	return VINF_SUCCESS;
1069	}
1070	default:;
1071	}
1072	return VERR_NOT_FOUND;
1073	}
1074
1075
1076	int VBoxNetLwipNAT::run()
1077	{
1078	/* EventQueue processing from VBoxHeadless.cpp */
1079	com::NativeEventQueue *gEventQ = NULL;
1080	gEventQ = com::NativeEventQueue::getMainEventQueue();
1081	while(true)
1082	{
1083	/* XXX:todo: graceful termination */
1084	gEventQ->processEventQueue(0);
1085	gEventQ->processEventQueue(500);
1086	}
1087
1088	vboxLwipCoreFinalize(VBoxNetLwipNAT::onLwipTcpIpFini, this);
1089
1090	m_vecPortForwardRule4.clear();
1091	m_vecPortForwardRule6.clear();
1092
1093	return VINF_SUCCESS;
1094	}
1095
1096
1097	/**
1098	* Entry point.
1099	*/
1100	extern "C" DECLEXPORT(int) TrustedMain(int argc, char argv, char envp)
1101	{
1102	LogFlowFuncEnter();
1103
1104	NOREF(envp);
1105
1106	#ifdef RT_OS_WINDOWS
1107	WSADATA wsaData;
1108	int err;
1109
1110	err = WSAStartup(MAKEWORD(2,2), &wsaData);
1111	if (err)
1112	{
1113	fprintf(stderr, "wsastartup: failed (%d)\n", err);
1114	return 1;
1115	}
1116	#endif
1117
1118	HRESULT hrc = com::Initialize();
1119	#ifdef VBOX_WITH_XPCOM
1120	if (hrc == NS_ERROR_FILE_ACCESS_DENIED)
1121	{
1122	char szHome[RTPATH_MAX] = "";
1123	com::GetVBoxUserHomeDirectory(szHome, sizeof(szHome));
1124	return RTMsgErrorExit(RTEXITCODE_FAILURE,
1125	"Failed to initialize COM because the global settings directory '%s' is not accessible!", szHome);
1126	}
1127	#endif
1128	if (FAILED(hrc))
1129	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Failed to initialize COM!");
1130
1131	g_pLwipNat = new VBoxNetLwipNAT();
1132
1133	Log2(("NAT: initialization\n"));
1134	int rc = g_pLwipNat->parseArgs(argc - 1, argv + 1);
1135	AssertRC(rc);
1136
1137
1138	if (!rc)
1139	{
1140
1141	g_pLwipNat->init();
1142	g_pLwipNat->run();
1143
1144	}
1145	delete g_pLwipNat;
1146	return 0;
1147	}
1148
1149
1150	#ifndef VBOX_WITH_HARDENING
1151
1152	int main(int argc, char argv, char envp)
1153	{
1154	int rc = RTR3InitExe(argc, &argv, RTR3INIT_FLAGS_SUPLIB);
1155	if (RT_FAILURE(rc))
1156	return RTMsgInitFailure(rc);
1157
1158	return TrustedMain(argc, argv, envp);
1159	}
1160
1161	# if defined(RT_OS_WINDOWS)
1162
1163	static LRESULT CALLBACK WindowProc(HWND hwnd,
1164	UINT uMsg,
1165	WPARAM wParam,
1166	LPARAM lParam
1167	)
1168	{
1169	if(uMsg == WM_DESTROY)
1170	{
1171	PostQuitMessage(0);
1172	return 0;
1173	}
1174	return DefWindowProc (hwnd, uMsg, wParam, lParam);
1175	}
1176
1177	static LPCWSTR g_WndClassName = L"VBoxNetNatLwipClass";
1178
1179	static DWORD WINAPI MsgThreadProc(__in LPVOID lpParameter)
1180	{
1181	HWND hwnd = 0;
1182	HINSTANCE hInstance = (HINSTANCE)GetModuleHandle (NULL);
1183	bool bExit = false;
1184
1185	/* Register the Window Class. */
1186	WNDCLASS wc;
1187	wc.style = 0;
1188	wc.lpfnWndProc = WindowProc;
1189	wc.cbClsExtra = 0;
1190	wc.cbWndExtra = sizeof(void *);
1191	wc.hInstance = hInstance;
1192	wc.hIcon = NULL;
1193	wc.hCursor = NULL;
1194	wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND + 1);
1195	wc.lpszMenuName = NULL;
1196	wc.lpszClassName = g_WndClassName;
1197
1198	ATOM atomWindowClass = RegisterClass(&wc);
1199
1200	if (atomWindowClass != 0)
1201	{
1202	/* Create the window. */
1203	hwnd = CreateWindowEx (WS_EX_TOOLWINDOW \| WS_EX_TRANSPARENT \| WS_EX_TOPMOST,
1204	g_WndClassName, g_WndClassName,
1205	WS_POPUPWINDOW,
1206	-200, -200, 100, 100, NULL, NULL, hInstance, NULL);
1207
1208	if (hwnd)
1209	{
1210	SetWindowPos(hwnd, HWND_TOPMOST, -200, -200, 0, 0,
1211	SWP_NOACTIVATE \| SWP_HIDEWINDOW \| SWP_NOCOPYBITS \| SWP_NOREDRAW \| SWP_NOSIZE);
1212
1213	MSG msg;
1214	while (GetMessage(&msg, NULL, 0, 0))
1215	{
1216	TranslateMessage(&msg);
1217	DispatchMessage(&msg);
1218	}
1219
1220	DestroyWindow (hwnd);
1221
1222	bExit = true;
1223	}
1224
1225	UnregisterClass (g_WndClassName, hInstance);
1226	}
1227
1228	if(bExit)
1229	{
1230	/* no need any accuracy here, in anyway the DHCP server usually gets terminated with TerminateProcess */
1231	exit(0);
1232	}
1233
1234	return 0;
1235	}
1236
1237
1238
1239	/** (We don't want a console usually.) */
1240	int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
1241	{
1242	#if 0
1243	NOREF(hInstance); NOREF(hPrevInstance); NOREF(lpCmdLine); NOREF(nCmdShow);
1244
1245	HANDLE hThread = CreateThread(
1246	NULL, /__in_opt LPSECURITY_ATTRIBUTES lpThreadAttributes, /
1247	0, /__in SIZE_T dwStackSize, /
1248	MsgThreadProc, /__in LPTHREAD_START_ROUTINE lpStartAddress,/
1249	NULL, /__in_opt LPVOID lpParameter,/
1250	0, /__in DWORD dwCreationFlags,/
1251	NULL /__out_opt LPDWORD lpThreadId/
1252	);
1253
1254	if(hThread != NULL)
1255	CloseHandle(hThread);
1256
1257	#endif
1258	return main(__argc, __argv, environ);
1259	}
1260	# endif /* RT_OS_WINDOWS */
1261
1262	#endif /* !VBOX_WITH_HARDENING */
1263

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source: vbox/trunk/src/VBox/NetworkServices/NAT/VBoxNetLwipNAT.cpp@ 49119

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