VBoxNetLwipNAT.cpp@ 58725

Last change on this file since 58725 was 57416, checked in by vboxsync, 9 years ago
More DECLCALLBACK fixes; retired RTMemAutoPtr.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 42.4 KB

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1	/* $Id: VBoxNetLwipNAT.cpp 57416 2015-08-18 11:19:28Z vboxsync $ */
2	/** @file
3	* VBoxNetNAT - NAT Service for connecting to IntNet.
4	*/
5
6	/*
7	* Copyright (C) 2009-2015 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	/* Must be included before winutils.h (lwip/def.h), otherwise Windows build breaks. */
19	#define LOG_GROUP LOG_GROUP_NAT_SERVICE
20
21	#include "winutils.h"
22
23	#include <VBox/com/assert.h>
24	#include <VBox/com/com.h>
25	#include <VBox/com/listeners.h>
26	#include <VBox/com/string.h>
27	#include <VBox/com/Guid.h>
28	#include <VBox/com/array.h>
29	#include <VBox/com/ErrorInfo.h>
30	#include <VBox/com/errorprint.h>
31	#include <VBox/com/VirtualBox.h>
32
33	#include <iprt/net.h>
34	#include <iprt/initterm.h>
35	#include <iprt/alloca.h>
36	#ifndef RT_OS_WINDOWS
37	# include <arpa/inet.h>
38	#endif
39	#include <iprt/err.h>
40	#include <iprt/time.h>
41	#include <iprt/timer.h>
42	#include <iprt/thread.h>
43	#include <iprt/stream.h>
44	#include <iprt/path.h>
45	#include <iprt/param.h>
46	#include <iprt/pipe.h>
47	#include <iprt/getopt.h>
48	#include <iprt/string.h>
49	#include <iprt/mem.h>
50	#include <iprt/message.h>
51	#include <iprt/req.h>
52	#include <iprt/file.h>
53	#include <iprt/semaphore.h>
54	#include <iprt/cpp/utils.h>
55	#include <VBox/log.h>
56
57	#include <VBox/sup.h>
58	#include <VBox/intnet.h>
59	#include <VBox/intnetinline.h>
60	#include <VBox/vmm/pdmnetinline.h>
61	#include <VBox/vmm/vmm.h>
62	#include <VBox/version.h>
63
64	#ifndef RT_OS_WINDOWS
65	# include <sys/poll.h>
66	# include <sys/socket.h>
67	# include <netinet/in.h>
68	# ifdef RT_OS_LINUX
69	# include <linux/icmp.h> /* ICMP_FILTER */
70	# endif
71	# include <netinet/icmp6.h>
72	#endif
73
74	#include <map>
75	#include <vector>
76	#include <string>
77
78	#include <stdio.h>
79
80	#include "../NetLib/VBoxNetLib.h"
81	#include "../NetLib/VBoxNetBaseService.h"
82	#include "../NetLib/utils.h"
83	#include "VBoxLwipCore.h"
84
85	extern "C"
86	{
87	/* bunch of LWIP headers */
88	#include "lwip/sys.h"
89	#include "lwip/pbuf.h"
90	#include "lwip/netif.h"
91	#include "lwip/ethip6.h"
92	#include "lwip/nd6.h" // for proxy_na_hook
93	#include "lwip/mld6.h"
94	#include "lwip/tcpip.h"
95	#include "netif/etharp.h"
96
97	#include "proxy.h"
98	#include "pxremap.h"
99	#include "portfwd.h"
100	}
101
102
103	#if defined(VBOX_RAWSOCK_DEBUG_HELPER) \
104	&& (defined(VBOX_WITH_HARDENING) \
105	\|\| defined(RT_OS_WINDOWS) \
106	\|\| defined(RT_OS_DARWIN))
107	# error Have you forgotten to turn off VBOX_RAWSOCK_DEBUG_HELPER?
108	#endif
109
110	#ifdef VBOX_RAWSOCK_DEBUG_HELPER
111	extern "C" int getrawsock(int type);
112	#endif
113
114	#include "../NetLib/VBoxPortForwardString.h"
115
116	static RTGETOPTDEF g_aGetOptDef[] =
117	{
118	{ "--port-forward4", 'p', RTGETOPT_REQ_STRING },
119	{ "--port-forward6", 'P', RTGETOPT_REQ_STRING }
120	};
121
122	typedef struct NATSEVICEPORTFORWARDRULE
123	{
124	PORTFORWARDRULE Pfr;
125	fwspec FWSpec;
126	} NATSEVICEPORTFORWARDRULE, *PNATSEVICEPORTFORWARDRULE;
127
128	typedef std::vector<NATSEVICEPORTFORWARDRULE> VECNATSERVICEPF;
129	typedef VECNATSERVICEPF::iterator ITERATORNATSERVICEPF;
130	typedef VECNATSERVICEPF::const_iterator CITERATORNATSERVICEPF;
131
132	static int fetchNatPortForwardRules(const ComNatPtr&, bool, VECNATSERVICEPF&);
133
134	static int vboxNetNATLogInit(int argc, char **argv);
135
136
137	class VBoxNetLwipNAT: public VBoxNetBaseService, public NATNetworkEventAdapter
138	{
139	friend class NATNetworkListener;
140	public:
141	VBoxNetLwipNAT(SOCKET icmpsock4, SOCKET icmpsock6);
142	virtual ~VBoxNetLwipNAT();
143	void usage(){ /* @todo: should be implemented */ };
144	int run();
145	virtual int init(void);
146	virtual int parseOpt(int rc, const RTGETOPTUNION& getOptVal);
147	/* VBoxNetNAT always needs Main */
148	virtual bool isMainNeeded() const { return true; }
149	virtual int processFrame(void *, size_t);
150	virtual int processGSO(PCPDMNETWORKGSO, size_t);
151	virtual int processUDP(void *, size_t) { return VERR_IGNORED; }
152
153	private:
154	struct proxy_options m_ProxyOptions;
155	struct sockaddr_in m_src4;
156	struct sockaddr_in6 m_src6;
157	/**
158	* place for registered local interfaces.
159	*/
160	ip4_lomap m_lo2off[10];
161	ip4_lomap_desc m_loOptDescriptor;
162
163	uint16_t m_u16Mtu;
164	netif m_LwipNetIf;
165
166	/* Our NAT network descriptor in Main */
167	ComPtr<INATNetwork> m_net;
168	ComPtr<IHost> m_host;
169
170	ComNatListenerPtr m_NatListener;
171	ComNatListenerPtr m_VBoxListener;
172	ComNatListenerPtr m_VBoxClientListener;
173	static INTNETSEG aXmitSeg[64];
174
175	HRESULT HandleEvent(VBoxEventType_T aEventType, IEvent *pEvent);
176
177	const char **getHostNameservers();
178
179	/* Only for debug needs, by default NAT service should load rules from SVC
180	* on startup, and then on sync them on events.
181	*/
182	bool fDontLoadRulesOnStartup;
183	static DECLCALLBACK(void) onLwipTcpIpInit(void *arg);
184	static DECLCALLBACK(void) onLwipTcpIpFini(void *arg);
185	static err_t netifInit(netif *pNetif);
186	static err_t netifLinkoutput(netif pNetif, pbuf pBuf);
187	/* static int intNetThreadRecv(RTTHREAD, void ); - unused /
188
189	VECNATSERVICEPF m_vecPortForwardRule4;
190	VECNATSERVICEPF m_vecPortForwardRule6;
191
192	static int natServicePfRegister(NATSEVICEPORTFORWARDRULE& natServicePf);
193	static int natServiceProcessRegisteredPf(VECNATSERVICEPF& vecPf);
194	};
195
196
197	static VBoxNetLwipNAT *g_pLwipNat;
198	INTNETSEG VBoxNetLwipNAT::aXmitSeg[64];
199
200	/**
201	* @note: this work on Event thread.
202	*/
203	HRESULT VBoxNetLwipNAT::HandleEvent(VBoxEventType_T aEventType, IEvent *pEvent)
204	{
205	HRESULT hrc = S_OK;
206	switch (aEventType)
207	{
208	case VBoxEventType_OnNATNetworkSetting:
209	{
210	ComPtr<INATNetworkSettingEvent> pSettingsEvent(pEvent);
211
212	com::Bstr networkName;
213	hrc = pSettingsEvent->COMGETTER(NetworkName)(networkName.asOutParam());
214	AssertComRCReturn(hrc, hrc);
215	if (networkName.compare(getNetworkName().c_str()))
216	break; /* change not for our network */
217
218	// XXX: only handle IPv6 default route for now
219	if (!m_ProxyOptions.ipv6_enabled)
220	break;
221
222	BOOL fIPv6DefaultRoute = FALSE;
223	hrc = pSettingsEvent->COMGETTER(AdvertiseDefaultIPv6RouteEnabled)(&fIPv6DefaultRoute);
224	AssertComRCReturn(hrc, hrc);
225
226	if (m_ProxyOptions.ipv6_defroute == fIPv6DefaultRoute)
227	break;
228
229	m_ProxyOptions.ipv6_defroute = fIPv6DefaultRoute;
230	tcpip_callback_with_block(proxy_rtadvd_do_quick, &m_LwipNetIf, 0);
231	break;
232	}
233
234	case VBoxEventType_OnNATNetworkPortForward:
235	{
236	ComPtr<INATNetworkPortForwardEvent> pForwardEvent = pEvent;
237
238	com::Bstr networkName;
239	hrc = pForwardEvent->COMGETTER(NetworkName)(networkName.asOutParam());
240	AssertComRCReturn(hrc, hrc);
241	if (networkName.compare(getNetworkName().c_str()))
242	break; /* change not for our network */
243
244	BOOL fCreateFW;
245	hrc = pForwardEvent->COMGETTER(Create)(&fCreateFW);
246	AssertComRCReturn(hrc, hrc);
247
248	BOOL fIPv6FW;
249	hrc = pForwardEvent->COMGETTER(Ipv6)(&fIPv6FW);
250	AssertComRCReturn(hrc, hrc);
251
252	com::Bstr name;
253	hrc = pForwardEvent->COMGETTER(Name)(name.asOutParam());
254	AssertComRCReturn(hrc, hrc);
255
256	NATProtocol_T proto = NATProtocol_TCP;
257	hrc = pForwardEvent->COMGETTER(Proto)(&proto);
258	AssertComRCReturn(hrc, hrc);
259
260	com::Bstr strHostAddr;
261	hrc = pForwardEvent->COMGETTER(HostIp)(strHostAddr.asOutParam());
262	AssertComRCReturn(hrc, hrc);
263
264	LONG lHostPort;
265	hrc = pForwardEvent->COMGETTER(HostPort)(&lHostPort);
266	AssertComRCReturn(hrc, hrc);
267
268	com::Bstr strGuestAddr;
269	hrc = pForwardEvent->COMGETTER(GuestIp)(strGuestAddr.asOutParam());
270	AssertComRCReturn(hrc, hrc);
271
272	LONG lGuestPort;
273	hrc = pForwardEvent->COMGETTER(GuestPort)(&lGuestPort);
274	AssertComRCReturn(hrc, hrc);
275
276	VECNATSERVICEPF& rules = fIPv6FW ? m_vecPortForwardRule6
277	: m_vecPortForwardRule4;
278
279	NATSEVICEPORTFORWARDRULE r;
280	RT_ZERO(r);
281
282	r.Pfr.fPfrIPv6 = fIPv6FW;
283
284	switch (proto)
285	{
286	case NATProtocol_TCP:
287	r.Pfr.iPfrProto = IPPROTO_TCP;
288	break;
289	case NATProtocol_UDP:
290	r.Pfr.iPfrProto = IPPROTO_UDP;
291	break;
292
293	default:
294	LogRel(("Event: %s %s port-forwarding rule \"%s\": invalid protocol %d\n",
295	fCreateFW ? "Add" : "Remove",
296	fIPv6FW ? "IPv6" : "IPv4",
297	com::Utf8Str(name).c_str(),
298	(int)proto));
299	goto port_forward_done;
300	}
301
302	LogRel(("Event: %s %s port-forwarding rule \"%s\": %s %s%s%s:%d -> %s%s%s:%d\n",
303	fCreateFW ? "Add" : "Remove",
304	fIPv6FW ? "IPv6" : "IPv4",
305	com::Utf8Str(name).c_str(),
306	proto == NATProtocol_TCP ? "TCP" : "UDP",
307	/* from */
308	fIPv6FW ? "[" : "",
309	com::Utf8Str(strHostAddr).c_str(),
310	fIPv6FW ? "]" : "",
311	lHostPort,
312	/* to */
313	fIPv6FW ? "[" : "",
314	com::Utf8Str(strGuestAddr).c_str(),
315	fIPv6FW ? "]" : "",
316	lGuestPort));
317
318	if (name.length() > sizeof(r.Pfr.szPfrName))
319	{
320	hrc = E_INVALIDARG;
321	goto port_forward_done;
322	}
323
324	RTStrPrintf(r.Pfr.szPfrName, sizeof(r.Pfr.szPfrName),
325	"%s", com::Utf8Str(name).c_str());
326
327	RTStrPrintf(r.Pfr.szPfrHostAddr, sizeof(r.Pfr.szPfrHostAddr),
328	"%s", com::Utf8Str(strHostAddr).c_str());
329
330	/* XXX: limits should be checked */
331	r.Pfr.u16PfrHostPort = (uint16_t)lHostPort;
332
333	RTStrPrintf(r.Pfr.szPfrGuestAddr, sizeof(r.Pfr.szPfrGuestAddr),
334	"%s", com::Utf8Str(strGuestAddr).c_str());
335
336	/* XXX: limits should be checked */
337	r.Pfr.u16PfrGuestPort = (uint16_t)lGuestPort;
338
339	if (fCreateFW) /* Addition */
340	{
341	int rc = natServicePfRegister(r);
342	if (RT_SUCCESS(rc))
343	rules.push_back(r);
344	}
345	else /* Deletion */
346	{
347	ITERATORNATSERVICEPF it;
348	for (it = rules.begin(); it != rules.end(); ++it)
349	{
350	/* compare */
351	NATSEVICEPORTFORWARDRULE &natFw = *it;
352	if ( natFw.Pfr.iPfrProto == r.Pfr.iPfrProto
353	&& natFw.Pfr.u16PfrHostPort == r.Pfr.u16PfrHostPort
354	&& strncmp(natFw.Pfr.szPfrHostAddr, r.Pfr.szPfrHostAddr, INET6_ADDRSTRLEN) == 0
355	&& natFw.Pfr.u16PfrGuestPort == r.Pfr.u16PfrGuestPort
356	&& strncmp(natFw.Pfr.szPfrGuestAddr, r.Pfr.szPfrGuestAddr, INET6_ADDRSTRLEN) == 0)
357	{
358	fwspec pFwCopy = (fwspec )RTMemDup(&natFw.FWSpec, sizeof(natFw.FWSpec));
359	if (pFwCopy)
360	{
361	int status = portfwd_rule_del(pFwCopy);
362	if (status == 0)
363	rules.erase(it); /* (pFwCopy is owned by lwip thread now.) */
364	else
365	RTMemFree(pFwCopy);
366	}
367	break;
368	}
369	} /* loop over vector elements */
370	} /* condition add or delete */
371	port_forward_done:
372	/* clean up strings */
373	name.setNull();
374	strHostAddr.setNull();
375	strGuestAddr.setNull();
376	break;
377	}
378
379	case VBoxEventType_OnHostNameResolutionConfigurationChange:
380	{
381	const char **ppcszNameServers = getHostNameservers();
382	err_t error;
383
384	error = tcpip_callback_with_block(pxdns_set_nameservers,
385	ppcszNameServers,
386	/* :block */ 0);
387	if (error != ERR_OK && ppcszNameServers != NULL)
388	RTMemFree(ppcszNameServers);
389	break;
390	}
391
392	case VBoxEventType_OnNATNetworkStartStop:
393	{
394	ComPtr <INATNetworkStartStopEvent> pStartStopEvent = pEvent;
395
396	com::Bstr networkName;
397	hrc = pStartStopEvent->COMGETTER(NetworkName)(networkName.asOutParam());
398	AssertComRCReturn(hrc, hrc);
399	if (networkName.compare(getNetworkName().c_str()))
400	break; /* change not for our network */
401
402	BOOL fStart = TRUE;
403	hrc = pStartStopEvent->COMGETTER(StartEvent)(&fStart);
404	AssertComRCReturn(hrc, hrc);
405
406	if (!fStart)
407	shutdown();
408	break;
409	}
410
411	case VBoxEventType_OnVBoxSVCAvailabilityChanged:
412	{
413	LogRel(("VBoxSVC became unavailable, exiting.\n"));
414	shutdown();
415	break;
416	}
417	}
418	return hrc;
419	}
420
421
422	/static/ DECLCALLBACK(void) VBoxNetLwipNAT::onLwipTcpIpInit(void *arg)
423	{
424	AssertPtrReturnVoid(arg);
425	VBoxNetLwipNAT pNat = static_cast<VBoxNetLwipNAT >(arg);
426
427	HRESULT hrc = com::Initialize();
428	Assert(!FAILED(hrc));
429
430	proxy_arp_hook = pxremap_proxy_arp;
431	proxy_ip4_divert_hook = pxremap_ip4_divert;
432
433	proxy_na_hook = pxremap_proxy_na;
434	proxy_ip6_divert_hook = pxremap_ip6_divert;
435
436	/* lwip thread */
437	RTNETADDRIPV4 network;
438	RTNETADDRIPV4 address = g_pLwipNat->getIpv4Address();
439	RTNETADDRIPV4 netmask = g_pLwipNat->getIpv4Netmask();
440	network.u = address.u & netmask.u;
441
442	ip_addr LwipIpAddr, LwipIpNetMask, LwipIpNetwork;
443
444	memcpy(&LwipIpAddr, &address, sizeof(ip_addr));
445	memcpy(&LwipIpNetMask, &netmask, sizeof(ip_addr));
446	memcpy(&LwipIpNetwork, &network, sizeof(ip_addr));
447
448	netif pNetif = netif_add(&g_pLwipNat->m_LwipNetIf / Lwip Interface */,
449	&LwipIpAddr /* IP address*/,
450	&LwipIpNetMask /* Network mask */,
451	&LwipIpAddr /* gateway address, @todo: is self IP acceptable? */,
452	g_pLwipNat /* state */,
453	VBoxNetLwipNAT::netifInit /* netif_init_fn */,
454	tcpip_input /* netif_input_fn */);
455
456	AssertPtrReturnVoid(pNetif);
457
458	LogRel(("netif %c%c%d: mac %RTmac\n",
459	pNetif->name[0], pNetif->name[1], pNetif->num,
460	pNetif->hwaddr));
461	LogRel(("netif %c%c%d: inet %RTnaipv4 netmask %RTnaipv4\n",
462	pNetif->name[0], pNetif->name[1], pNetif->num,
463	pNetif->ip_addr, pNetif->netmask));
464	for (int i = 0; i < LWIP_IPV6_NUM_ADDRESSES; ++i) {
465	if (!ip6_addr_isinvalid(netif_ip6_addr_state(pNetif, i))) {
466	LogRel(("netif %c%c%d: inet6 %RTnaipv6\n",
467	pNetif->name[0], pNetif->name[1], pNetif->num,
468	netif_ip6_addr(pNetif, i)));
469	}
470	}
471
472	netif_set_up(pNetif);
473	netif_set_link_up(pNetif);
474
475	if (pNat->m_ProxyOptions.ipv6_enabled) {
476	/*
477	* XXX: lwIP currently only ever calls mld6_joingroup() in
478	* nd6_tmr() for fresh tentative addresses, which is a wrong place
479	* to do it - but I'm not keen on fixing this properly for now
480	* (with correct handling of interface up and down transitions,
481	* etc). So stick it here as a kludge.
482	*/
483	for (int i = 0; i <= 1; ++i) {
484	ip6_addr_t *paddr = netif_ip6_addr(pNetif, i);
485
486	ip6_addr_t solicited_node_multicast_address;
487	ip6_addr_set_solicitednode(&solicited_node_multicast_address,
488	paddr->addr[3]);
489	mld6_joingroup(paddr, &solicited_node_multicast_address);
490	}
491
492	/*
493	* XXX: We must join the solicited-node multicast for the
494	* addresses we do IPv6 NA-proxy for. We map IPv6 loopback to
495	* proxy address + 1. We only need the low 24 bits, and those are
496	* fixed.
497	*/
498	{
499	ip6_addr_t solicited_node_multicast_address;
500
501	ip6_addr_set_solicitednode(&solicited_node_multicast_address,
502	/* last 24 bits of the address */
503	PP_HTONL(0x00000002));
504	mld6_netif_joingroup(pNetif, &solicited_node_multicast_address);
505	}
506	}
507
508	proxy_init(&g_pLwipNat->m_LwipNetIf, &g_pLwipNat->m_ProxyOptions);
509
510	natServiceProcessRegisteredPf(g_pLwipNat->m_vecPortForwardRule4);
511	natServiceProcessRegisteredPf(g_pLwipNat->m_vecPortForwardRule6);
512	}
513
514
515	/static/ DECLCALLBACK(void) VBoxNetLwipNAT::onLwipTcpIpFini(void* arg)
516	{
517	AssertPtrReturnVoid(arg);
518	VBoxNetLwipNAT pThis = (VBoxNetLwipNAT )arg;
519
520	/* XXX: proxy finalization */
521	netif_set_link_down(&g_pLwipNat->m_LwipNetIf);
522	netif_set_down(&g_pLwipNat->m_LwipNetIf);
523	netif_remove(&g_pLwipNat->m_LwipNetIf);
524
525	}
526
527	/*
528	* Callback for netif_add() to initialize the interface.
529	*/
530	/static/ err_t VBoxNetLwipNAT::netifInit(netif *pNetif)
531	{
532	err_t rcLwip = ERR_OK;
533
534	AssertPtrReturn(pNetif, ERR_ARG);
535
536	VBoxNetLwipNAT pNat = static_cast<VBoxNetLwipNAT >(pNetif->state);
537	AssertPtrReturn(pNat, ERR_ARG);
538
539	LogFlowFunc(("ENTER: pNetif[%c%c%d]\n", pNetif->name[0], pNetif->name[1], pNetif->num));
540	/* validity */
541	AssertReturn( pNetif->name[0] == 'N'
542	&& pNetif->name[1] == 'T', ERR_ARG);
543
544
545	pNetif->hwaddr_len = sizeof(RTMAC);
546	RTMAC mac = g_pLwipNat->getMacAddress();
547	memcpy(pNetif->hwaddr, &mac, sizeof(RTMAC));
548
549	pNat->m_u16Mtu = 1500; // XXX: FIXME
550	pNetif->mtu = pNat->m_u16Mtu;
551
552	pNetif->flags = NETIF_FLAG_BROADCAST
553	\| NETIF_FLAG_ETHARP /* Don't bother driver with ARP and let Lwip resolve ARP handling */
554	\| NETIF_FLAG_ETHERNET; /* Lwip works with ethernet too */
555
556	pNetif->linkoutput = netifLinkoutput; /* ether-level-pipe */
557	pNetif->output = etharp_output; /* ip-pipe */
558
559	if (pNat->m_ProxyOptions.ipv6_enabled) {
560	pNetif->output_ip6 = ethip6_output;
561
562	/* IPv6 link-local address in slot 0 */
563	netif_create_ip6_linklocal_address(pNetif, /* :from_mac_48bit */ 1);
564	netif_ip6_addr_set_state(pNetif, 0, IP6_ADDR_PREFERRED); // skip DAD
565
566	/*
567	* RFC 4193 Locally Assigned Global ID (ULA) in slot 1
568	* [fd17:625c:f037:XXXX::1] where XXXX, 16 bit Subnet ID, are two
569	* bytes from the middle of the IPv4 address, e.g. :dead: for
570	* 10.222.173.1
571	*/
572	u8_t nethi = ip4_addr2(&pNetif->ip_addr);
573	u8_t netlo = ip4_addr3(&pNetif->ip_addr);
574
575	ip6_addr_t *paddr = netif_ip6_addr(pNetif, 1);
576	IP6_ADDR(paddr, 0, 0xFD, 0x17, 0x62, 0x5C);
577	IP6_ADDR(paddr, 1, 0xF0, 0x37, nethi, netlo);
578	IP6_ADDR(paddr, 2, 0x00, 0x00, 0x00, 0x00);
579	IP6_ADDR(paddr, 3, 0x00, 0x00, 0x00, 0x01);
580	netif_ip6_addr_set_state(pNetif, 1, IP6_ADDR_PREFERRED);
581
582	#if LWIP_IPV6_SEND_ROUTER_SOLICIT
583	pNetif->rs_count = 0;
584	#endif
585	}
586
587	LogFlowFunc(("LEAVE: %d\n", rcLwip));
588	return rcLwip;
589	}
590
591
592	/static/ err_t VBoxNetLwipNAT::netifLinkoutput(netif pNetif, pbuf pPBuf)
593	{
594	AssertPtrReturn(pNetif, ERR_ARG);
595	AssertPtrReturn(pPBuf, ERR_ARG);
596
597	VBoxNetLwipNAT self = static_cast<VBoxNetLwipNAT >(pNetif->state);
598	AssertPtrReturn(self, ERR_IF);
599	AssertReturn(self == g_pLwipNat, ERR_ARG);
600
601	LogFlowFunc(("ENTER: pNetif[%c%c%d], pPbuf:%p\n",
602	pNetif->name[0],
603	pNetif->name[1],
604	pNetif->num,
605	pPBuf));
606
607	RT_ZERO(VBoxNetLwipNAT::aXmitSeg);
608
609	size_t idx = 0;
610	for (struct pbuf *q = pPBuf; q != NULL; q = q->next, ++idx)
611	{
612	AssertReturn(idx < RT_ELEMENTS(VBoxNetLwipNAT::aXmitSeg), ERR_MEM);
613
614	#if ETH_PAD_SIZE
615	if (q == pPBuf)
616	{
617	VBoxNetLwipNAT::aXmitSeg[idx].pv = (uint8_t *)q->payload + ETH_PAD_SIZE;
618	VBoxNetLwipNAT::aXmitSeg[idx].cb = q->len - ETH_PAD_SIZE;
619	}
620	else
621	#endif
622	{
623	VBoxNetLwipNAT::aXmitSeg[idx].pv = q->payload;
624	VBoxNetLwipNAT::aXmitSeg[idx].cb = q->len;
625	}
626	}
627
628	int rc = self->sendBufferOnWire(VBoxNetLwipNAT::aXmitSeg, idx,
629	pPBuf->tot_len - ETH_PAD_SIZE);
630	AssertRCReturn(rc, ERR_IF);
631
632	self->flushWire();
633
634	LogFlowFunc(("LEAVE: %d\n", ERR_OK));
635	return ERR_OK;
636	}
637
638
639	VBoxNetLwipNAT::VBoxNetLwipNAT(SOCKET icmpsock4, SOCKET icmpsock6) : VBoxNetBaseService("VBoxNetNAT", "nat-network")
640	{
641	LogFlowFuncEnter();
642
643	m_ProxyOptions.ipv6_enabled = 0;
644	m_ProxyOptions.ipv6_defroute = 0;
645	m_ProxyOptions.icmpsock4 = icmpsock4;
646	m_ProxyOptions.icmpsock6 = icmpsock6;
647	m_ProxyOptions.tftp_root = NULL;
648	m_ProxyOptions.src4 = NULL;
649	m_ProxyOptions.src6 = NULL;
650	RT_ZERO(m_src4);
651	RT_ZERO(m_src6);
652	m_src4.sin_family = AF_INET;
653	m_src6.sin6_family = AF_INET6;
654	#if HAVE_SA_LEN
655	m_src4.sin_len = sizeof(m_src4);
656	m_src6.sin6_len = sizeof(m_src6);
657	#endif
658	m_ProxyOptions.nameservers = NULL;
659
660	m_LwipNetIf.name[0] = 'N';
661	m_LwipNetIf.name[1] = 'T';
662
663	RTMAC mac;
664	mac.au8[0] = 0x52;
665	mac.au8[1] = 0x54;
666	mac.au8[2] = 0;
667	mac.au8[3] = 0x12;
668	mac.au8[4] = 0x35;
669	mac.au8[5] = 0;
670	setMacAddress(mac);
671
672	RTNETADDRIPV4 address;
673	address.u = RT_MAKE_U32_FROM_U8( 10, 0, 2, 2); // NB: big-endian
674	setIpv4Address(address);
675
676	address.u = RT_H2N_U32_C(0xffffff00);
677	setIpv4Netmask(address);
678
679	fDontLoadRulesOnStartup = false;
680
681	for(unsigned int i = 0; i < RT_ELEMENTS(g_aGetOptDef); ++i)
682	addCommandLineOption(&g_aGetOptDef[i]);
683
684	LogFlowFuncLeave();
685	}
686
687
688	VBoxNetLwipNAT::~VBoxNetLwipNAT()
689	{
690	if (m_ProxyOptions.tftp_root != NULL)
691	{
692	RTStrFree((char *)m_ProxyOptions.tftp_root);
693	}
694	}
695
696
697	/static/ int VBoxNetLwipNAT::natServicePfRegister(NATSEVICEPORTFORWARDRULE& natPf)
698	{
699	int lrc;
700
701	int sockFamily = (natPf.Pfr.fPfrIPv6 ? PF_INET6 : PF_INET);
702	int socketSpec;
703	switch(natPf.Pfr.iPfrProto)
704	{
705	case IPPROTO_TCP:
706	socketSpec = SOCK_STREAM;
707	break;
708	case IPPROTO_UDP:
709	socketSpec = SOCK_DGRAM;
710	break;
711	default:
712	return VERR_IGNORED;
713	}
714
715	const char *pszHostAddr = natPf.Pfr.szPfrHostAddr;
716	if (pszHostAddr[0] == '\0')
717	{
718	if (sockFamily == PF_INET)
719	pszHostAddr = "0.0.0.0";
720	else
721	pszHostAddr = "::";
722	}
723
724	lrc = fwspec_set(&natPf.FWSpec,
725	sockFamily,
726	socketSpec,
727	pszHostAddr,
728	natPf.Pfr.u16PfrHostPort,
729	natPf.Pfr.szPfrGuestAddr,
730	natPf.Pfr.u16PfrGuestPort);
731	if (lrc != 0)
732	return VERR_IGNORED;
733
734	fwspec pFwCopy = (fwspec )RTMemDup(&natPf.FWSpec, sizeof(natPf.FWSpec));
735	if (pFwCopy)
736	{
737	lrc = portfwd_rule_add(pFwCopy);
738	if (lrc == 0)
739	return VINF_SUCCESS; /* (pFwCopy is owned by lwip thread now.) */
740	RTMemFree(pFwCopy);
741	}
742	else
743	LogRel(("Unable to allocate memory for %s rule \"%s\"\n",
744	natPf.Pfr.fPfrIPv6 ? "IPv6" : "IPv4",
745	natPf.Pfr.szPfrName));
746	return VERR_IGNORED;
747	}
748
749
750	/static/ int VBoxNetLwipNAT::natServiceProcessRegisteredPf(VECNATSERVICEPF& vecRules)
751	{
752	ITERATORNATSERVICEPF it;
753	for (it = vecRules.begin(); it != vecRules.end(); ++it)
754	{
755	NATSEVICEPORTFORWARDRULE &natPf = *it;
756
757	LogRel(("Loading %s port-forwarding rule \"%s\": %s %s%s%s:%d -> %s%s%s:%d\n",
758	natPf.Pfr.fPfrIPv6 ? "IPv6" : "IPv4",
759	natPf.Pfr.szPfrName,
760	natPf.Pfr.iPfrProto == IPPROTO_TCP ? "TCP" : "UDP",
761	/* from */
762	natPf.Pfr.fPfrIPv6 ? "[" : "",
763	natPf.Pfr.szPfrHostAddr,
764	natPf.Pfr.fPfrIPv6 ? "]" : "",
765	natPf.Pfr.u16PfrHostPort,
766	/* to */
767	natPf.Pfr.fPfrIPv6 ? "[" : "",
768	natPf.Pfr.szPfrGuestAddr,
769	natPf.Pfr.fPfrIPv6 ? "]" : "",
770	natPf.Pfr.u16PfrGuestPort));
771
772	natServicePfRegister(natPf);
773	}
774
775	return VINF_SUCCESS;
776	}
777
778
779	/**
780	* Main thread. Starts also the LWIP thread.
781	*/
782	int VBoxNetLwipNAT::init()
783	{
784	LogFlowFuncEnter();
785
786	/* virtualbox initialized in super class */
787	int rc = ::VBoxNetBaseService::init();
788	AssertRCReturn(rc, rc);
789
790	std::string networkName = getNetworkName();
791	rc = findNatNetwork(virtualbox, networkName, m_net);
792	AssertRCReturn(rc, rc);
793
794	{
795	ComEventTypeArray eventTypes;
796	eventTypes.push_back(VBoxEventType_OnNATNetworkPortForward);
797	eventTypes.push_back(VBoxEventType_OnNATNetworkSetting);
798	rc = createNatListener(m_NatListener, virtualbox, this, eventTypes);
799	AssertRCReturn(rc, rc);
800	}
801
802
803	// resolver changes are reported on vbox but are retrieved from
804	// host so stash a pointer for future lookups
805	HRESULT hrc = virtualbox->COMGETTER(Host)(m_host.asOutParam());
806	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
807
808	{
809	ComEventTypeArray eventTypes;
810	eventTypes.push_back(VBoxEventType_OnHostNameResolutionConfigurationChange);
811	eventTypes.push_back(VBoxEventType_OnNATNetworkStartStop);
812	rc = createNatListener(m_VBoxListener, virtualbox, this, eventTypes);
813	AssertRCReturn(rc, rc);
814	}
815
816	{
817	ComEventTypeArray eventTypes;
818	eventTypes.push_back(VBoxEventType_OnVBoxSVCAvailabilityChanged);
819	rc = createClientListener(m_VBoxClientListener, virtualboxClient, this, eventTypes);
820	AssertRCReturn(rc, rc);
821	}
822
823	BOOL fIPv6Enabled = FALSE;
824	hrc = m_net->COMGETTER(IPv6Enabled)(&fIPv6Enabled);
825	AssertComRCReturn(hrc, VERR_NOT_FOUND);
826
827	BOOL fIPv6DefaultRoute = FALSE;
828	if (fIPv6Enabled)
829	{
830	hrc = m_net->COMGETTER(AdvertiseDefaultIPv6RouteEnabled)(&fIPv6DefaultRoute);
831	AssertComRCReturn(hrc, VERR_NOT_FOUND);
832	}
833
834	m_ProxyOptions.ipv6_enabled = fIPv6Enabled;
835	m_ProxyOptions.ipv6_defroute = fIPv6DefaultRoute;
836
837
838	com::Bstr bstrSourceIp4Key = com::BstrFmt("NAT/%s/SourceIp4", networkName.c_str());
839	com::Bstr bstrSourceIpX;
840	hrc = virtualbox->GetExtraData(bstrSourceIp4Key.raw(), bstrSourceIpX.asOutParam());
841	if (SUCCEEDED(hrc))
842	{
843	RTNETADDRIPV4 addr;
844	rc = RTNetStrToIPv4Addr(com::Utf8Str(bstrSourceIpX).c_str(), &addr);
845	if (RT_SUCCESS(rc))
846	{
847	RT_ZERO(m_src4);
848
849	m_src4.sin_addr.s_addr = addr.u;
850	m_ProxyOptions.src4 = &m_src4;
851
852	bstrSourceIpX.setNull();
853	}
854	}
855
856	if (!fDontLoadRulesOnStartup)
857	{
858	fetchNatPortForwardRules(m_net, false, m_vecPortForwardRule4);
859	fetchNatPortForwardRules(m_net, true, m_vecPortForwardRule6);
860	} /* if (!fDontLoadRulesOnStartup) */
861
862	AddressToOffsetMapping tmp;
863	rc = localMappings(m_net, tmp);
864	if (RT_SUCCESS(rc) && !tmp.empty())
865	{
866	unsigned long i = 0;
867	for (AddressToOffsetMapping::iterator it = tmp.begin();
868	it != tmp.end() && i < RT_ELEMENTS(m_lo2off);
869	++it, ++i)
870	{
871	ip4_addr_set_u32(&m_lo2off[i].loaddr, it->first.u);
872	m_lo2off[i].off = it->second;
873	}
874
875	m_loOptDescriptor.lomap = m_lo2off;
876	m_loOptDescriptor.num_lomap = i;
877	m_ProxyOptions.lomap_desc = &m_loOptDescriptor;
878	}
879
880	com::Bstr bstr;
881	hrc = virtualbox->COMGETTER(HomeFolder)(bstr.asOutParam());
882	AssertComRCReturn(hrc, VERR_NOT_FOUND);
883	if (!bstr.isEmpty())
884	{
885	com::Utf8Str strTftpRoot(com::Utf8StrFmt("%ls%c%s",
886	bstr.raw(), RTPATH_DELIMITER, "TFTP"));
887	char pszStrTemp; // avoid const char * vs char **
888	rc = RTStrUtf8ToCurrentCP(&pszStrTemp, strTftpRoot.c_str());
889	AssertRC(rc);
890	m_ProxyOptions.tftp_root = pszStrTemp;
891	}
892
893	m_ProxyOptions.nameservers = getHostNameservers();
894
895	/* end of COM initialization */
896
897	rc = g_pLwipNat->tryGoOnline();
898	if (RT_FAILURE(rc))
899	return rc;
900
901	/* this starts LWIP thread */
902	vboxLwipCoreInitialize(VBoxNetLwipNAT::onLwipTcpIpInit, this);
903
904	LogFlowFuncLeaveRC(rc);
905	return rc;
906	}
907
908
909	const char **VBoxNetLwipNAT::getHostNameservers()
910	{
911	if (m_host.isNull())
912	return NULL;
913
914	com::SafeArray<BSTR> aNameServers;
915	HRESULT hrc = m_host->COMGETTER(NameServers)(ComSafeArrayAsOutParam(aNameServers));
916	if (FAILED(hrc))
917	return NULL;
918
919	const size_t cNameServers = aNameServers.size();
920	if (cNameServers == 0)
921	return NULL;
922
923	const char **ppcszNameServers =
924	(const char *)RTMemAllocZ(sizeof(char ) * (cNameServers + 1));
925	if (ppcszNameServers == NULL)
926	return NULL;
927
928	size_t idxLast = 0;
929	for (size_t i = 0; i < cNameServers; ++i)
930	{
931	com::Utf8Str strNameServer(aNameServers[i]);
932	ppcszNameServers[idxLast] = RTStrDup(strNameServer.c_str());
933	if (ppcszNameServers[idxLast] != NULL)
934	++idxLast;
935	}
936
937	if (idxLast == 0)
938	{
939	RTMemFree(ppcszNameServers);
940	return NULL;
941	}
942
943	return ppcszNameServers;
944	}
945
946
947	int VBoxNetLwipNAT::parseOpt(int rc, const RTGETOPTUNION& Val)
948	{
949	switch (rc)
950	{
951	case 'p':
952	case 'P':
953	{
954	NATSEVICEPORTFORWARDRULE Rule;
955	VECNATSERVICEPF& rules = (rc == 'P'?
956	m_vecPortForwardRule6
957	: m_vecPortForwardRule4);
958
959	fDontLoadRulesOnStartup = true;
960
961	RT_ZERO(Rule);
962
963	int irc = netPfStrToPf(Val.psz, (rc == 'P'), &Rule.Pfr);
964	rules.push_back(Rule);
965	return VINF_SUCCESS;
966	}
967	default:;
968	}
969	return VERR_NOT_FOUND;
970	}
971
972
973	int VBoxNetLwipNAT::processFrame(void *pvFrame, size_t cbFrame)
974	{
975	AssertPtrReturn(pvFrame, VERR_INVALID_PARAMETER);
976	AssertReturn(cbFrame != 0, VERR_INVALID_PARAMETER);
977
978	struct pbuf *p = pbuf_alloc(PBUF_RAW, cbFrame + ETH_PAD_SIZE, PBUF_POOL);
979	if (RT_UNLIKELY(p == NULL))
980	return VERR_NO_MEMORY;
981
982	/*
983	* The code below is inlined version of:
984	*
985	* pbuf_header(p, -ETH_PAD_SIZE); // hide padding
986	* pbuf_take(p, pvFrame, cbFrame);
987	* pbuf_header(p, ETH_PAD_SIZE); // reveal padding
988	*/
989	struct pbuf *q = p;
990	uint8_t pu8Chunk = (uint8_t )pvFrame;
991	do {
992	uint8_t payload = (uint8_t )q->payload;
993	size_t len = q->len;
994
995	#if ETH_PAD_SIZE
996	if (RT_LIKELY(q == p)) // single pbuf is large enough
997	{
998	payload += ETH_PAD_SIZE;
999	len -= ETH_PAD_SIZE;
1000	}
1001	#endif
1002	memcpy(payload, pu8Chunk, len);
1003	pu8Chunk += len;
1004	q = q->next;
1005	} while (RT_UNLIKELY(q != NULL));
1006
1007	m_LwipNetIf.input(p, &m_LwipNetIf);
1008	return VINF_SUCCESS;
1009	}
1010
1011
1012	int VBoxNetLwipNAT::processGSO(PCPDMNETWORKGSO pGso, size_t cbFrame)
1013	{
1014	if (!PDMNetGsoIsValid(pGso, cbFrame,
1015	cbFrame - sizeof(PDMNETWORKGSO)))
1016	return VERR_INVALID_PARAMETER;
1017
1018	cbFrame -= sizeof(PDMNETWORKGSO);
1019	uint8_t abHdrScratch[256];
1020	uint32_t const cSegs = PDMNetGsoCalcSegmentCount(pGso,
1021	cbFrame);
1022	for (size_t iSeg = 0; iSeg < cSegs; iSeg++)
1023	{
1024	uint32_t cbSegFrame;
1025	void *pvSegFrame =
1026	PDMNetGsoCarveSegmentQD(pGso,
1027	(uint8_t *)(pGso + 1),
1028	cbFrame,
1029	abHdrScratch,
1030	iSeg,
1031	cSegs,
1032	&cbSegFrame);
1033
1034	int rc = processFrame(pvSegFrame, cbSegFrame);
1035	if (RT_FAILURE(rc))
1036	{
1037	return rc;
1038	}
1039	}
1040
1041	return VINF_SUCCESS;
1042	}
1043
1044
1045	int VBoxNetLwipNAT::run()
1046	{
1047	/* Father starts receiving thread and enter event loop. */
1048	VBoxNetBaseService::run();
1049
1050	vboxLwipCoreFinalize(VBoxNetLwipNAT::onLwipTcpIpFini, this);
1051
1052	m_vecPortForwardRule4.clear();
1053	m_vecPortForwardRule6.clear();
1054
1055	destroyNatListener(m_NatListener, virtualbox);
1056	destroyNatListener(m_VBoxListener, virtualbox);
1057	destroyClientListener(m_VBoxClientListener, virtualboxClient);
1058
1059	return VINF_SUCCESS;
1060	}
1061
1062
1063	/**
1064	* Entry point.
1065	*/
1066	extern "C" DECLEXPORT(int) TrustedMain(int argc, char argv, char envp)
1067	{
1068	int rc;
1069
1070	LogFlowFuncEnter();
1071
1072	NOREF(envp);
1073
1074	#ifdef RT_OS_WINDOWS
1075	WSADATA wsaData;
1076	int err;
1077
1078	err = WSAStartup(MAKEWORD(2,2), &wsaData);
1079	if (err)
1080	{
1081	fprintf(stderr, "wsastartup: failed (%d)\n", err);
1082	return 1;
1083	}
1084	#endif
1085
1086	SOCKET icmpsock4 = INVALID_SOCKET;
1087	SOCKET icmpsock6 = INVALID_SOCKET;
1088	#ifndef RT_OS_DARWIN
1089	const int icmpstype = SOCK_RAW;
1090	#else
1091	/* on OS X it's not privileged */
1092	const int icmpstype = SOCK_DGRAM;
1093	#endif
1094
1095	icmpsock4 = socket(AF_INET, icmpstype, IPPROTO_ICMP);
1096	if (icmpsock4 == INVALID_SOCKET)
1097	{
1098	perror("IPPROTO_ICMP");
1099	#ifdef VBOX_RAWSOCK_DEBUG_HELPER
1100	icmpsock4 = getrawsock(AF_INET);
1101	#endif
1102	}
1103
1104	if (icmpsock4 != INVALID_SOCKET)
1105	{
1106	#ifdef ICMP_FILTER // Linux specific
1107	struct icmp_filter flt = {
1108	~(uint32_t)(
1109	(1U << ICMP_ECHOREPLY)
1110	\| (1U << ICMP_DEST_UNREACH)
1111	\| (1U << ICMP_TIME_EXCEEDED)
1112	)
1113	};
1114
1115	int status = setsockopt(icmpsock4, SOL_RAW, ICMP_FILTER,
1116	&flt, sizeof(flt));
1117	if (status < 0)
1118	{
1119	perror("ICMP_FILTER");
1120	}
1121	#endif
1122	}
1123
1124	icmpsock6 = socket(AF_INET6, icmpstype, IPPROTO_ICMPV6);
1125	if (icmpsock6 == INVALID_SOCKET)
1126	{
1127	perror("IPPROTO_ICMPV6");
1128	#ifdef VBOX_RAWSOCK_DEBUG_HELPER
1129	icmpsock6 = getrawsock(AF_INET6);
1130	#endif
1131	}
1132
1133	if (icmpsock6 != INVALID_SOCKET)
1134	{
1135	#ifdef ICMP6_FILTER // Windows doesn't support RFC 3542 API
1136	/*
1137	* XXX: We do this here for now, not in pxping.c, to avoid
1138	* name clashes between lwIP and system headers.
1139	*/
1140	struct icmp6_filter flt;
1141	ICMP6_FILTER_SETBLOCKALL(&flt);
1142
1143	ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &flt);
1144
1145	ICMP6_FILTER_SETPASS(ICMP6_DST_UNREACH, &flt);
1146	ICMP6_FILTER_SETPASS(ICMP6_PACKET_TOO_BIG, &flt);
1147	ICMP6_FILTER_SETPASS(ICMP6_TIME_EXCEEDED, &flt);
1148	ICMP6_FILTER_SETPASS(ICMP6_PARAM_PROB, &flt);
1149
1150	int status = setsockopt(icmpsock6, IPPROTO_ICMPV6, ICMP6_FILTER,
1151	&flt, sizeof(flt));
1152	if (status < 0)
1153	{
1154	perror("ICMP6_FILTER");
1155	}
1156	#endif
1157	}
1158
1159	HRESULT hrc = com::Initialize();
1160	if (FAILED(hrc))
1161	{
1162	#ifdef VBOX_WITH_XPCOM
1163	if (hrc == NS_ERROR_FILE_ACCESS_DENIED)
1164	{
1165	char szHome[RTPATH_MAX] = "";
1166	int vrc = com::GetVBoxUserHomeDirectory(szHome, sizeof(szHome), false);
1167	if (RT_SUCCESS(vrc))
1168	{
1169	return RTMsgErrorExit(RTEXITCODE_FAILURE,
1170	"Failed to initialize COM: %s: %Rhrf",
1171	szHome, hrc);
1172	}
1173	}
1174	#endif // VBOX_WITH_XPCOM
1175	return RTMsgErrorExit(RTEXITCODE_FAILURE,
1176	"Failed to initialize COM: %Rhrf", hrc);
1177	}
1178
1179	rc = vboxNetNATLogInit(argc, argv);
1180	// shall we bail if we failed to init logging?
1181
1182	g_pLwipNat = new VBoxNetLwipNAT(icmpsock4, icmpsock6);
1183
1184	Log2(("NAT: initialization\n"));
1185	rc = g_pLwipNat->parseArgs(argc - 1, argv + 1);
1186	rc = (rc == 0) ? VINF_SUCCESS : VERR_GENERAL_FAILURE; /* XXX: FIXME */
1187
1188	if (RT_SUCCESS(rc))
1189	rc = g_pLwipNat->init();
1190
1191	if (RT_SUCCESS(rc))
1192	g_pLwipNat->run();
1193
1194	delete g_pLwipNat;
1195	return 0;
1196	}
1197
1198
1199	static int vboxNetNATLogInit(int argc, char **argv)
1200	{
1201	size_t cch;
1202	int rc;
1203
1204	char szHome[RTPATH_MAX];
1205	rc = com::GetVBoxUserHomeDirectory(szHome, sizeof(szHome), false);
1206	if (RT_FAILURE(rc))
1207	return rc;
1208
1209	const char *pcszNetwork = NULL;
1210
1211	// XXX: This duplicates information from VBoxNetBaseService.cpp.
1212	// Perhaps option definitions should be exported as public static
1213	// member of VBoxNetBaseService?
1214	static const RTGETOPTDEF s_aOptions[] = {
1215	{ "--network", 'n', RTGETOPT_REQ_STRING }
1216	};
1217
1218	RTGETOPTSTATE GetState;
1219	RTGetOptInit(&GetState, argc, argv, s_aOptions, RT_ELEMENTS(s_aOptions), 1,
1220	RTGETOPTINIT_FLAGS_NO_STD_OPTS);
1221
1222	RTGETOPTUNION ValueUnion;
1223	int ch;
1224	while ((ch = RTGetOpt(&GetState, &ValueUnion)))
1225	{
1226	if (ch == 'n')
1227	{
1228	pcszNetwork = ValueUnion.psz;
1229	break;
1230	}
1231	}
1232
1233	if (pcszNetwork == NULL)
1234	return VERR_MISSING;
1235
1236	char szNetwork[RTPATH_MAX];
1237	rc = RTStrCopy(szNetwork, sizeof(szNetwork), pcszNetwork);
1238	if (RT_FAILURE(rc))
1239	return rc;
1240
1241	// sanitize network name to be usable as a path component
1242	for (char p = szNetwork; p != '\0'; ++p)
1243	{
1244	if (RTPATH_IS_SEP(*p))
1245	*p = '_';
1246	}
1247
1248	char szLogFile[RTPATH_MAX];
1249	cch = RTStrPrintf(szLogFile, sizeof(szLogFile),
1250	"%s%c%s.log", szHome, RTPATH_DELIMITER, szNetwork);
1251	if (cch >= sizeof(szLogFile))
1252	{
1253	return VERR_BUFFER_OVERFLOW;
1254	}
1255
1256	// sanitize network name some more to be usable as environment variable
1257	for (char p = szNetwork; p != '\0'; ++p)
1258	{
1259	if (*p != '_'
1260	&& (p < '0' \|\| '9' < p)
1261	&& (p < 'a' \|\| 'z' < p)
1262	&& (p < 'A' \|\| 'Z' < p))
1263	{
1264	*p = '_';
1265	}
1266	}
1267
1268	char szEnvVarBase[128];
1269	cch = RTStrPrintf(szEnvVarBase, sizeof(szEnvVarBase),
1270	"VBOXNET_%s_RELEASE_LOG", szNetwork);
1271	if (cch >= sizeof(szEnvVarBase))
1272	return VERR_BUFFER_OVERFLOW;
1273
1274	char szError[RTPATH_MAX + 128];
1275	rc = com::VBoxLogRelCreate("NAT Network",
1276	szLogFile,
1277	RTLOGFLAGS_PREFIX_TIME_PROG,
1278	"all all.restrict -default.restrict",
1279	szEnvVarBase,
1280	RTLOGDEST_FILE,
1281	32768 /* cMaxEntriesPerGroup */,
1282	0 /* cHistory */,
1283	0 /* uHistoryFileTime */,
1284	0 /* uHistoryFileSize */,
1285	szError, sizeof(szError));
1286	return rc;
1287	}
1288
1289
1290	static int fetchNatPortForwardRules(const ComNatPtr& nat, bool fIsIPv6, VECNATSERVICEPF& vec)
1291	{
1292	HRESULT hrc;
1293	com::SafeArray<BSTR> rules;
1294	if (fIsIPv6)
1295	hrc = nat->COMGETTER(PortForwardRules6)(ComSafeArrayAsOutParam(rules));
1296	else
1297	hrc = nat->COMGETTER(PortForwardRules4)(ComSafeArrayAsOutParam(rules));
1298	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
1299
1300	NATSEVICEPORTFORWARDRULE Rule;
1301	for (size_t idxRules = 0; idxRules < rules.size(); ++idxRules)
1302	{
1303	Log(("%d-%s rule: %ls\n", idxRules, (fIsIPv6 ? "IPv6" : "IPv4"), rules[idxRules]));
1304	RT_ZERO(Rule);
1305
1306	int rc = netPfStrToPf(com::Utf8Str(rules[idxRules]).c_str(),
1307	fIsIPv6, &Rule.Pfr);
1308	if (RT_FAILURE(rc))
1309	continue;
1310
1311	vec.push_back(Rule);
1312	}
1313
1314	return VINF_SUCCESS;
1315	}
1316
1317
1318	#ifndef VBOX_WITH_HARDENING
1319
1320	int main(int argc, char argv, char envp)
1321	{
1322	int rc = RTR3InitExe(argc, &argv, RTR3INIT_FLAGS_SUPLIB);
1323	if (RT_FAILURE(rc))
1324	return RTMsgInitFailure(rc);
1325
1326	return TrustedMain(argc, argv, envp);
1327	}
1328
1329	# if defined(RT_OS_WINDOWS)
1330
1331	static LRESULT CALLBACK WindowProc(HWND hwnd,
1332	UINT uMsg,
1333	WPARAM wParam,
1334	LPARAM lParam
1335	)
1336	{
1337	if(uMsg == WM_DESTROY)
1338	{
1339	PostQuitMessage(0);
1340	return 0;
1341	}
1342	return DefWindowProc (hwnd, uMsg, wParam, lParam);
1343	}
1344
1345	static LPCWSTR g_WndClassName = L"VBoxNetNatLwipClass";
1346
1347	static DWORD WINAPI MsgThreadProc(__in LPVOID lpParameter)
1348	{
1349	HWND hwnd = 0;
1350	HINSTANCE hInstance = (HINSTANCE)GetModuleHandle (NULL);
1351	bool bExit = false;
1352
1353	/* Register the Window Class. */
1354	WNDCLASS wc;
1355	wc.style = 0;
1356	wc.lpfnWndProc = WindowProc;
1357	wc.cbClsExtra = 0;
1358	wc.cbWndExtra = sizeof(void *);
1359	wc.hInstance = hInstance;
1360	wc.hIcon = NULL;
1361	wc.hCursor = NULL;
1362	wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND + 1);
1363	wc.lpszMenuName = NULL;
1364	wc.lpszClassName = g_WndClassName;
1365
1366	ATOM atomWindowClass = RegisterClass(&wc);
1367
1368	if (atomWindowClass != 0)
1369	{
1370	/* Create the window. */
1371	hwnd = CreateWindowEx(WS_EX_TOOLWINDOW \| WS_EX_TRANSPARENT \| WS_EX_TOPMOST,
1372	g_WndClassName, g_WndClassName, WS_POPUPWINDOW,
1373	-200, -200, 100, 100, NULL, NULL, hInstance, NULL);
1374
1375	if (hwnd)
1376	{
1377	SetWindowPos(hwnd, HWND_TOPMOST, -200, -200, 0, 0,
1378	SWP_NOACTIVATE \| SWP_HIDEWINDOW \| SWP_NOCOPYBITS \| SWP_NOREDRAW \| SWP_NOSIZE);
1379
1380	MSG msg;
1381	while (GetMessage(&msg, NULL, 0, 0))
1382	{
1383	TranslateMessage(&msg);
1384	DispatchMessage(&msg);
1385	}
1386
1387	DestroyWindow (hwnd);
1388
1389	bExit = true;
1390	}
1391
1392	UnregisterClass (g_WndClassName, hInstance);
1393	}
1394
1395	if(bExit)
1396	{
1397	/* no need any accuracy here, in anyway the DHCP server usually gets terminated with TerminateProcess */
1398	exit(0);
1399	}
1400
1401	return 0;
1402	}
1403
1404
1405
1406	/** (We don't want a console usually.) */
1407	int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
1408	{
1409	#if 0
1410	NOREF(hInstance); NOREF(hPrevInstance); NOREF(lpCmdLine); NOREF(nCmdShow);
1411
1412	HANDLE hThread = CreateThread(
1413	NULL, /__in_opt LPSECURITY_ATTRIBUTES lpThreadAttributes, /
1414	0, /__in SIZE_T dwStackSize, /
1415	MsgThreadProc, /__in LPTHREAD_START_ROUTINE lpStartAddress,/
1416	NULL, /__in_opt LPVOID lpParameter,/
1417	0, /__in DWORD dwCreationFlags,/
1418	NULL /__out_opt LPDWORD lpThreadId/
1419	);
1420
1421	if(hThread != NULL)
1422	CloseHandle(hThread);
1423
1424	#endif
1425	return main(__argc, __argv, environ);
1426	}
1427	# endif /* RT_OS_WINDOWS */
1428
1429	#endif /* !VBOX_WITH_HARDENING */

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source: vbox/trunk/src/VBox/NetworkServices/NAT/VBoxNetLwipNAT.cpp@ 58725

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