VBoxNetLwipNAT.cpp@ 52054

Last change on this file since 52054 was 50494, checked in by vboxsync, 11 years ago
VBoxNetLwipNAT: Windows build fix.
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File size: 40.9 KB

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1	/* $Id: VBoxNetLwipNAT.cpp 50494 2014-02-18 14:21:10Z 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.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	#include <iprt/cpp/mem.h>
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	#define LOG_GROUP LOG_GROUP_NAT_SERVICE
56	#include <VBox/log.h>
57
58	#include <VBox/sup.h>
59	#include <VBox/intnet.h>
60	#include <VBox/intnetinline.h>
61	#include <VBox/vmm/pdmnetinline.h>
62	#include <VBox/vmm/vmm.h>
63	#include <VBox/version.h>
64
65	#ifndef RT_OS_WINDOWS
66	# include <sys/poll.h>
67	# include <sys/socket.h>
68	# include <netinet/in.h>
69	# ifdef RT_OS_LINUX
70	# include <linux/icmp.h> /* ICMP_FILTER */
71	# endif
72	# include <netinet/icmp6.h>
73	#endif
74
75	#include <map>
76	#include <vector>
77	#include <string>
78
79	#include <stdio.h>
80
81	#include "../NetLib/VBoxNetLib.h"
82	#include "../NetLib/VBoxNetBaseService.h"
83	#include "../NetLib/utils.h"
84	#include "VBoxLwipCore.h"
85
86	extern "C"
87	{
88	/* bunch of LWIP headers */
89	#include "lwip/sys.h"
90	#include "lwip/pbuf.h"
91	#include "lwip/netif.h"
92	#include "lwip/ethip6.h"
93	#include "lwip/nd6.h" // for proxy_na_hook
94	#include "lwip/mld6.h"
95	#include "lwip/tcpip.h"
96	#include "netif/etharp.h"
97
98	#include "proxy.h"
99	#include "pxremap.h"
100	#include "portfwd.h"
101	}
102
103
104	#if defined(VBOX_RAWSOCK_DEBUG_HELPER) \
105	&& (defined(VBOX_WITH_HARDENING) \
106	\|\| defined(RT_OS_WINDOWS) \
107	\|\| defined(RT_OS_DARWIN))
108	# error Have you forgotten to turn off VBOX_RAWSOCK_DEBUG_HELPER?
109	#endif
110
111	#ifdef VBOX_RAWSOCK_DEBUG_HELPER
112	extern "C" int getrawsock(int type);
113	#endif
114
115	#include "../NetLib/VBoxPortForwardString.h"
116
117	static RTGETOPTDEF g_aGetOptDef[] =
118	{
119	{ "--port-forward4", 'p', RTGETOPT_REQ_STRING },
120	{ "--port-forward6", 'P', RTGETOPT_REQ_STRING }
121	};
122
123	typedef struct NATSEVICEPORTFORWARDRULE
124	{
125	PORTFORWARDRULE Pfr;
126	fwspec FWSpec;
127	} NATSEVICEPORTFORWARDRULE, *PNATSEVICEPORTFORWARDRULE;
128
129	typedef std::vector<NATSEVICEPORTFORWARDRULE> VECNATSERVICEPF;
130	typedef VECNATSERVICEPF::iterator ITERATORNATSERVICEPF;
131	typedef VECNATSERVICEPF::const_iterator CITERATORNATSERVICEPF;
132
133	static int fetchNatPortForwardRules(const ComNatPtr&, bool, VECNATSERVICEPF&);
134
135	static int vboxNetNATLogInit(int argc, char **argv);
136
137
138	class VBoxNetLwipNAT: public VBoxNetBaseService, public NATNetworkEventAdapter
139	{
140	friend class NATNetworkListener;
141	public:
142	VBoxNetLwipNAT(SOCKET icmpsock4, SOCKET icmpsock6);
143	virtual ~VBoxNetLwipNAT();
144	void usage(){ /* @todo: should be implemented */ };
145	int run();
146	virtual int init(void);
147	virtual int parseOpt(int rc, const RTGETOPTUNION& getOptVal);
148	/* VBoxNetNAT always needs Main */
149	virtual bool isMainNeeded() const { return true; }
150	virtual int processFrame(void *, size_t);
151	virtual int processGSO(PCPDMNETWORKGSO, size_t);
152	virtual int processUDP(void *, size_t) { return VERR_IGNORED; }
153
154	private:
155	struct proxy_options m_ProxyOptions;
156	struct sockaddr_in m_src4;
157	struct sockaddr_in6 m_src6;
158	/**
159	* place for registered local interfaces.
160	*/
161	ip4_lomap m_lo2off[10];
162	ip4_lomap_desc m_loOptDescriptor;
163
164	uint16_t m_u16Mtu;
165	netif m_LwipNetIf;
166
167	/* Our NAT network descriptor in Main */
168	ComPtr<INATNetwork> m_net;
169	ComNatListenerPtr m_listener;
170
171	ComPtr<IHost> m_host;
172	ComNatListenerPtr m_vboxListener;
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 void onLwipTcpIpInit(void *arg);
184	static 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 *);
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,
204	IEvent *pEvent)
205	{
206	HRESULT hrc = S_OK;
207	switch (aEventType)
208	{
209	case VBoxEventType_OnNATNetworkSetting:
210	{
211	ComPtr<INATNetworkSettingEvent> evSettings(pEvent);
212	// XXX: only handle IPv6 default route for now
213
214	if (!m_ProxyOptions.ipv6_enabled)
215	{
216	break;
217	}
218
219	BOOL fIPv6DefaultRoute = FALSE;
220	hrc = evSettings->COMGETTER(AdvertiseDefaultIPv6RouteEnabled)(&fIPv6DefaultRoute);
221	AssertReturn(SUCCEEDED(hrc), hrc);
222
223	if (m_ProxyOptions.ipv6_defroute == fIPv6DefaultRoute)
224	{
225	break;
226	}
227
228	m_ProxyOptions.ipv6_defroute = fIPv6DefaultRoute;
229	tcpip_callback_with_block(proxy_rtadvd_do_quick, &m_LwipNetIf, 0);
230
231	break;
232	}
233
234	case VBoxEventType_OnNATNetworkPortForward:
235	{
236	com::Bstr name, strHostAddr, strGuestAddr;
237	LONG lHostPort, lGuestPort;
238	BOOL fCreateFW, fIPv6FW;
239	NATProtocol_T proto = NATProtocol_TCP;
240
241
242	ComPtr<INATNetworkPortForwardEvent> pfEvt = pEvent;
243
244	hrc = pfEvt->COMGETTER(Create)(&fCreateFW);
245	AssertReturn(SUCCEEDED(hrc), hrc);
246
247	hrc = pfEvt->COMGETTER(Ipv6)(&fIPv6FW);
248	AssertReturn(SUCCEEDED(hrc), hrc);
249
250	hrc = pfEvt->COMGETTER(Name)(name.asOutParam());
251	AssertReturn(SUCCEEDED(hrc), hrc);
252
253	hrc = pfEvt->COMGETTER(Proto)(&proto);
254	AssertReturn(SUCCEEDED(hrc), hrc);
255
256	hrc = pfEvt->COMGETTER(HostIp)(strHostAddr.asOutParam());
257	AssertReturn(SUCCEEDED(hrc), hrc);
258
259	hrc = pfEvt->COMGETTER(HostPort)(&lHostPort);
260	AssertReturn(SUCCEEDED(hrc), hrc);
261
262	hrc = pfEvt->COMGETTER(GuestIp)(strGuestAddr.asOutParam());
263	AssertReturn(SUCCEEDED(hrc), hrc);
264
265	hrc = pfEvt->COMGETTER(GuestPort)(&lGuestPort);
266	AssertReturn(SUCCEEDED(hrc), hrc);
267
268	VECNATSERVICEPF& rules = (fIPv6FW ?
269	m_vecPortForwardRule6 :
270	m_vecPortForwardRule4);
271
272	NATSEVICEPORTFORWARDRULE r;
273	RT_ZERO(r);
274
275	r.Pfr.fPfrIPv6 = fIPv6FW;
276
277	switch (proto)
278	{
279	case NATProtocol_TCP:
280	r.Pfr.iPfrProto = IPPROTO_TCP;
281	break;
282	case NATProtocol_UDP:
283	r.Pfr.iPfrProto = IPPROTO_UDP;
284	break;
285
286	default:
287	LogRel(("Event: %s %s port-forwarding rule \"%s\":"
288	" invalid protocol %d\n",
289	fCreateFW ? "Add" : "Remove",
290	fIPv6FW ? "IPv6" : "IPv4",
291	com::Utf8Str(name).c_str(),
292	(int)proto));
293	goto port_forward_done;
294	}
295
296	LogRel(("Event: %s %s port-forwarding rule \"%s\":"
297	" %s %s%s%s:%d -> %s%s%s:%d\n",
298	fCreateFW ? "Add" : "Remove",
299	fIPv6FW ? "IPv6" : "IPv4",
300	com::Utf8Str(name).c_str(),
301	proto == NATProtocol_TCP ? "TCP" : "UDP",
302	/* from */
303	fIPv6FW ? "[" : "",
304	com::Utf8Str(strHostAddr).c_str(),
305	fIPv6FW ? "]" : "",
306	lHostPort,
307	/* to */
308	fIPv6FW ? "[" : "",
309	com::Utf8Str(strGuestAddr).c_str(),
310	fIPv6FW ? "]" : "",
311	lGuestPort));
312
313	if (name.length() > sizeof(r.Pfr.szPfrName))
314	{
315	hrc = E_INVALIDARG;
316	goto port_forward_done;
317	}
318
319	RTStrPrintf(r.Pfr.szPfrName, sizeof(r.Pfr.szPfrName),
320	"%s", com::Utf8Str(name).c_str());
321
322	RTStrPrintf(r.Pfr.szPfrHostAddr, sizeof(r.Pfr.szPfrHostAddr),
323	"%s", com::Utf8Str(strHostAddr).c_str());
324
325	/* XXX: limits should be checked */
326	r.Pfr.u16PfrHostPort = (uint16_t)lHostPort;
327
328	RTStrPrintf(r.Pfr.szPfrGuestAddr, sizeof(r.Pfr.szPfrGuestAddr),
329	"%s", com::Utf8Str(strGuestAddr).c_str());
330
331	/* XXX: limits should be checked */
332	r.Pfr.u16PfrGuestPort = (uint16_t)lGuestPort;
333
334	if (fCreateFW) /* Addition */
335	{
336	int rc = natServicePfRegister(r);
337	if (RT_SUCCESS(rc))
338	rules.push_back(r);
339	}
340	else /* Deletion */
341	{
342	ITERATORNATSERVICEPF it;
343	for (it = rules.begin(); it != rules.end(); ++it)
344	{
345	/* compare */
346	NATSEVICEPORTFORWARDRULE& natFw = *it;
347	if ( natFw.Pfr.iPfrProto == r.Pfr.iPfrProto
348	&& natFw.Pfr.u16PfrHostPort == r.Pfr.u16PfrHostPort
349	&& (strncmp(natFw.Pfr.szPfrHostAddr, r.Pfr.szPfrHostAddr, INET6_ADDRSTRLEN) == 0)
350	&& natFw.Pfr.u16PfrGuestPort == r.Pfr.u16PfrGuestPort
351	&& (strncmp(natFw.Pfr.szPfrGuestAddr, r.Pfr.szPfrGuestAddr, INET6_ADDRSTRLEN) == 0))
352	{
353	RTCMemAutoPtr<fwspec> pFwCopy;
354	if (RT_UNLIKELY(!pFwCopy.alloc()))
355	break;
356
357	memcpy(pFwCopy.get(), &natFw.FWSpec, sizeof(natFw.FWSpec));
358
359	int status = portfwd_rule_del(pFwCopy.get());
360	if (status != 0)
361	break;
362
363	pFwCopy.release(); /* owned by lwip thread now */
364	rules.erase(it);
365	break;
366	}
367	} /* loop over vector elements */
368	} /* condition add or delete */
369	port_forward_done:
370	/* clean up strings */
371	name.setNull();
372	strHostAddr.setNull();
373	strGuestAddr.setNull();
374	break;
375	}
376
377	case VBoxEventType_OnHostNameResolutionConfigurationChange:
378	{
379	const char **ppcszNameServers = getHostNameservers();
380	err_t error;
381
382	error = tcpip_callback_with_block(pxdns_set_nameservers,
383	ppcszNameServers,
384	/* :block */ 0);
385	if (error != ERR_OK && ppcszNameServers != NULL)
386	{
387	RTMemFree(ppcszNameServers);
388	}
389	break;
390	}
391	}
392	return hrc;
393	}
394
395
396	void VBoxNetLwipNAT::onLwipTcpIpInit(void* arg)
397	{
398	AssertPtrReturnVoid(arg);
399	VBoxNetLwipNAT pNat = static_cast<VBoxNetLwipNAT >(arg);
400
401	HRESULT hrc = com::Initialize();
402	Assert(!FAILED(hrc));
403
404	proxy_arp_hook = pxremap_proxy_arp;
405	proxy_ip4_divert_hook = pxremap_ip4_divert;
406
407	proxy_na_hook = pxremap_proxy_na;
408	proxy_ip6_divert_hook = pxremap_ip6_divert;
409
410	/* lwip thread */
411	RTNETADDRIPV4 network;
412	RTNETADDRIPV4 address = g_pLwipNat->getIpv4Address();
413	RTNETADDRIPV4 netmask = g_pLwipNat->getIpv4Netmask();
414	network.u = address.u & netmask.u;
415
416	ip_addr LwipIpAddr, LwipIpNetMask, LwipIpNetwork;
417
418	memcpy(&LwipIpAddr, &address, sizeof(ip_addr));
419	memcpy(&LwipIpNetMask, &netmask, sizeof(ip_addr));
420	memcpy(&LwipIpNetwork, &network, sizeof(ip_addr));
421
422	netif pNetif = netif_add(&g_pLwipNat->m_LwipNetIf / Lwip Interface */,
423	&LwipIpAddr /* IP address*/,
424	&LwipIpNetMask /* Network mask */,
425	&LwipIpAddr /* gateway address, @todo: is self IP acceptable? */,
426	g_pLwipNat /* state */,
427	VBoxNetLwipNAT::netifInit /* netif_init_fn */,
428	tcpip_input /* netif_input_fn */);
429
430	AssertPtrReturnVoid(pNetif);
431
432	LogRel(("netif %c%c%d: mac %RTmac\n",
433	pNetif->name[0], pNetif->name[1], pNetif->num,
434	pNetif->hwaddr));
435	LogRel(("netif %c%c%d: inet %RTnaipv4 netmask %RTnaipv4\n",
436	pNetif->name[0], pNetif->name[1], pNetif->num,
437	pNetif->ip_addr, pNetif->netmask));
438	for (int i = 0; i < LWIP_IPV6_NUM_ADDRESSES; ++i) {
439	if (!ip6_addr_isinvalid(netif_ip6_addr_state(pNetif, i))) {
440	LogRel(("netif %c%c%d: inet6 %RTnaipv6\n",
441	pNetif->name[0], pNetif->name[1], pNetif->num,
442	netif_ip6_addr(pNetif, i)));
443	}
444	}
445
446	netif_set_up(pNetif);
447	netif_set_link_up(pNetif);
448
449	if (pNat->m_ProxyOptions.ipv6_enabled) {
450	/*
451	* XXX: lwIP currently only ever calls mld6_joingroup() in
452	* nd6_tmr() for fresh tentative addresses, which is a wrong place
453	* to do it - but I'm not keen on fixing this properly for now
454	* (with correct handling of interface up and down transitions,
455	* etc). So stick it here as a kludge.
456	*/
457	for (int i = 0; i <= 1; ++i) {
458	ip6_addr_t *paddr = netif_ip6_addr(pNetif, i);
459
460	ip6_addr_t solicited_node_multicast_address;
461	ip6_addr_set_solicitednode(&solicited_node_multicast_address,
462	paddr->addr[3]);
463	mld6_joingroup(paddr, &solicited_node_multicast_address);
464	}
465
466	/*
467	* XXX: We must join the solicited-node multicast for the
468	* addresses we do IPv6 NA-proxy for. We map IPv6 loopback to
469	* proxy address + 1. We only need the low 24 bits, and those are
470	* fixed.
471	*/
472	{
473	ip6_addr_t solicited_node_multicast_address;
474
475	ip6_addr_set_solicitednode(&solicited_node_multicast_address,
476	/* last 24 bits of the address */
477	PP_HTONL(0x00000002));
478	mld6_netif_joingroup(pNetif, &solicited_node_multicast_address);
479	}
480	}
481
482	proxy_init(&g_pLwipNat->m_LwipNetIf, &g_pLwipNat->m_ProxyOptions);
483
484	natServiceProcessRegisteredPf(g_pLwipNat->m_vecPortForwardRule4);
485	natServiceProcessRegisteredPf(g_pLwipNat->m_vecPortForwardRule6);
486	}
487
488
489	void VBoxNetLwipNAT::onLwipTcpIpFini(void* arg)
490	{
491	AssertPtrReturnVoid(arg);
492	VBoxNetLwipNAT pThis = (VBoxNetLwipNAT )arg;
493
494	/* XXX: proxy finalization */
495	netif_set_link_down(&g_pLwipNat->m_LwipNetIf);
496	netif_set_down(&g_pLwipNat->m_LwipNetIf);
497	netif_remove(&g_pLwipNat->m_LwipNetIf);
498
499	}
500
501	/*
502	* Callback for netif_add() to initialize the interface.
503	*/
504	err_t VBoxNetLwipNAT::netifInit(netif *pNetif)
505	{
506	err_t rcLwip = ERR_OK;
507
508	AssertPtrReturn(pNetif, ERR_ARG);
509
510	VBoxNetLwipNAT pNat = static_cast<VBoxNetLwipNAT >(pNetif->state);
511	AssertPtrReturn(pNat, ERR_ARG);
512
513	LogFlowFunc(("ENTER: pNetif[%c%c%d]\n", pNetif->name[0], pNetif->name[1], pNetif->num));
514	/* validity */
515	AssertReturn( pNetif->name[0] == 'N'
516	&& pNetif->name[1] == 'T', ERR_ARG);
517
518
519	pNetif->hwaddr_len = sizeof(RTMAC);
520	RTMAC mac = g_pLwipNat->getMacAddress();
521	memcpy(pNetif->hwaddr, &mac, sizeof(RTMAC));
522
523	pNat->m_u16Mtu = 1500; // XXX: FIXME
524	pNetif->mtu = pNat->m_u16Mtu;
525
526	pNetif->flags = NETIF_FLAG_BROADCAST
527	\| NETIF_FLAG_ETHARP /* Don't bother driver with ARP and let Lwip resolve ARP handling */
528	\| NETIF_FLAG_ETHERNET; /* Lwip works with ethernet too */
529
530	pNetif->linkoutput = netifLinkoutput; /* ether-level-pipe */
531	pNetif->output = etharp_output; /* ip-pipe */
532
533	if (pNat->m_ProxyOptions.ipv6_enabled) {
534	pNetif->output_ip6 = ethip6_output;
535
536	/* IPv6 link-local address in slot 0 */
537	netif_create_ip6_linklocal_address(pNetif, /* :from_mac_48bit */ 1);
538	netif_ip6_addr_set_state(pNetif, 0, IP6_ADDR_PREFERRED); // skip DAD
539
540	/*
541	* RFC 4193 Locally Assigned Global ID (ULA) in slot 1
542	* [fd17:625c:f037:XXXX::1] where XXXX, 16 bit Subnet ID, are two
543	* bytes from the middle of the IPv4 address, e.g. :dead: for
544	* 10.222.173.1
545	*/
546	u8_t nethi = ip4_addr2(&pNetif->ip_addr);
547	u8_t netlo = ip4_addr3(&pNetif->ip_addr);
548
549	ip6_addr_t *paddr = netif_ip6_addr(pNetif, 1);
550	IP6_ADDR(paddr, 0, 0xFD, 0x17, 0x62, 0x5C);
551	IP6_ADDR(paddr, 1, 0xF0, 0x37, nethi, netlo);
552	IP6_ADDR(paddr, 2, 0x00, 0x00, 0x00, 0x00);
553	IP6_ADDR(paddr, 3, 0x00, 0x00, 0x00, 0x01);
554	netif_ip6_addr_set_state(pNetif, 1, IP6_ADDR_PREFERRED);
555
556	#if LWIP_IPV6_SEND_ROUTER_SOLICIT
557	pNetif->rs_count = 0;
558	#endif
559	}
560
561	LogFlowFunc(("LEAVE: %d\n", rcLwip));
562	return rcLwip;
563	}
564
565
566	err_t VBoxNetLwipNAT::netifLinkoutput(netif pNetif, pbuf pPBuf)
567	{
568	AssertPtrReturn(pNetif, ERR_ARG);
569	AssertPtrReturn(pPBuf, ERR_ARG);
570
571	VBoxNetLwipNAT self = static_cast<VBoxNetLwipNAT >(pNetif->state);
572	AssertPtrReturn(self, ERR_IF);
573	AssertReturn(self == g_pLwipNat, ERR_ARG);
574
575	LogFlowFunc(("ENTER: pNetif[%c%c%d], pPbuf:%p\n",
576	pNetif->name[0],
577	pNetif->name[1],
578	pNetif->num,
579	pPBuf));
580
581	RT_ZERO(VBoxNetLwipNAT::aXmitSeg);
582
583	size_t idx = 0;
584	for (struct pbuf *q = pPBuf; q != NULL; q = q->next, ++idx)
585	{
586	AssertReturn(idx < RT_ELEMENTS(VBoxNetLwipNAT::aXmitSeg), ERR_MEM);
587
588	#if ETH_PAD_SIZE
589	if (q == pPBuf)
590	{
591	VBoxNetLwipNAT::aXmitSeg[idx].pv = (uint8_t *)q->payload + ETH_PAD_SIZE;
592	VBoxNetLwipNAT::aXmitSeg[idx].cb = q->len - ETH_PAD_SIZE;
593	}
594	else
595	#endif
596	{
597	VBoxNetLwipNAT::aXmitSeg[idx].pv = q->payload;
598	VBoxNetLwipNAT::aXmitSeg[idx].cb = q->len;
599	}
600	}
601
602	int rc = self->sendBufferOnWire(VBoxNetLwipNAT::aXmitSeg, idx,
603	pPBuf->tot_len - ETH_PAD_SIZE);
604	AssertRCReturn(rc, ERR_IF);
605
606	self->flushWire();
607
608	LogFlowFunc(("LEAVE: %d\n", ERR_OK));
609	return ERR_OK;
610	}
611
612
613	VBoxNetLwipNAT::VBoxNetLwipNAT(SOCKET icmpsock4, SOCKET icmpsock6) : VBoxNetBaseService("VBoxNetNAT", "nat-network")
614	{
615	LogFlowFuncEnter();
616
617	m_ProxyOptions.ipv6_enabled = 0;
618	m_ProxyOptions.ipv6_defroute = 0;
619	m_ProxyOptions.icmpsock4 = icmpsock4;
620	m_ProxyOptions.icmpsock6 = icmpsock6;
621	m_ProxyOptions.tftp_root = NULL;
622	m_ProxyOptions.src4 = NULL;
623	m_ProxyOptions.src6 = NULL;
624	memset(&m_src4, 0, sizeof(m_src4));
625	memset(&m_src6, 0, sizeof(m_src6));
626	m_src4.sin_family = AF_INET;
627	m_src6.sin6_family = AF_INET6;
628	#if HAVE_SA_LEN
629	m_src4.sin_len = sizeof(m_src4);
630	m_src6.sin6_len = sizeof(m_src6);
631	#endif
632	m_ProxyOptions.nameservers = NULL;
633
634	m_LwipNetIf.name[0] = 'N';
635	m_LwipNetIf.name[1] = 'T';
636
637	RTMAC mac;
638	mac.au8[0] = 0x52;
639	mac.au8[1] = 0x54;
640	mac.au8[2] = 0;
641	mac.au8[3] = 0x12;
642	mac.au8[4] = 0x35;
643	mac.au8[5] = 0;
644	setMacAddress(mac);
645
646	RTNETADDRIPV4 address;
647	address.u = RT_MAKE_U32_FROM_U8( 10, 0, 2, 2); // NB: big-endian
648	setIpv4Address(address);
649
650	address.u = RT_H2N_U32_C(0xffffff00);
651	setIpv4Netmask(address);
652
653	fDontLoadRulesOnStartup = false;
654
655	for(unsigned int i = 0; i < RT_ELEMENTS(g_aGetOptDef); ++i)
656	addCommandLineOption(&g_aGetOptDef[i]);
657
658	LogFlowFuncLeave();
659	}
660
661
662	VBoxNetLwipNAT::~VBoxNetLwipNAT()
663	{
664	if (m_ProxyOptions.tftp_root != NULL)
665	{
666	RTStrFree((char *)m_ProxyOptions.tftp_root);
667	}
668	}
669
670
671	int VBoxNetLwipNAT::natServicePfRegister(NATSEVICEPORTFORWARDRULE& natPf)
672	{
673	int lrc;
674
675	int sockFamily = (natPf.Pfr.fPfrIPv6 ? PF_INET6 : PF_INET);
676	int socketSpec;
677	switch(natPf.Pfr.iPfrProto)
678	{
679	case IPPROTO_TCP:
680	socketSpec = SOCK_STREAM;
681	break;
682	case IPPROTO_UDP:
683	socketSpec = SOCK_DGRAM;
684	break;
685	default:
686	return VERR_IGNORED;
687	}
688
689	const char *pszHostAddr = natPf.Pfr.szPfrHostAddr;
690	if (pszHostAddr[0] == '\0')
691	{
692	if (sockFamily == PF_INET)
693	pszHostAddr = "0.0.0.0";
694	else
695	pszHostAddr = "::";
696	}
697
698	lrc = fwspec_set(&natPf.FWSpec,
699	sockFamily,
700	socketSpec,
701	pszHostAddr,
702	natPf.Pfr.u16PfrHostPort,
703	natPf.Pfr.szPfrGuestAddr,
704	natPf.Pfr.u16PfrGuestPort);
705	if (lrc != 0)
706	return VERR_IGNORED;
707
708	RTCMemAutoPtr<fwspec> pFwCopy;
709	if (RT_UNLIKELY(!pFwCopy.alloc()))
710	{
711	LogRel(("Unable to allocate memory for %s rule \"%s\"\n",
712	natPf.Pfr.fPfrIPv6 ? "IPv6" : "IPv4",
713	natPf.Pfr.szPfrName));
714	return VERR_IGNORED;
715	}
716
717	memcpy(pFwCopy.get(), &natPf.FWSpec, sizeof(natPf.FWSpec));
718
719	lrc = portfwd_rule_add(pFwCopy.get());
720	if (lrc != 0)
721	return VERR_IGNORED;
722
723	pFwCopy.release(); /* owned by lwip thread now */
724	return VINF_SUCCESS;
725	}
726
727
728	int VBoxNetLwipNAT::natServiceProcessRegisteredPf(VECNATSERVICEPF& vecRules)
729	{
730	ITERATORNATSERVICEPF it;
731	for (it = vecRules.begin(); it != vecRules.end(); ++it)
732	{
733	NATSEVICEPORTFORWARDRULE &natPf = *it;
734
735	LogRel(("Loading %s port-forwarding rule \"%s\": %s %s%s%s:%d -> %s%s%s:%d\n",
736	natPf.Pfr.fPfrIPv6 ? "IPv6" : "IPv4",
737	natPf.Pfr.szPfrName,
738	natPf.Pfr.iPfrProto == IPPROTO_TCP ? "TCP" : "UDP",
739	/* from */
740	natPf.Pfr.fPfrIPv6 ? "[" : "",
741	natPf.Pfr.szPfrHostAddr,
742	natPf.Pfr.fPfrIPv6 ? "]" : "",
743	natPf.Pfr.u16PfrHostPort,
744	/* to */
745	natPf.Pfr.fPfrIPv6 ? "[" : "",
746	natPf.Pfr.szPfrGuestAddr,
747	natPf.Pfr.fPfrIPv6 ? "]" : "",
748	natPf.Pfr.u16PfrGuestPort));
749
750	natServicePfRegister(natPf);
751	}
752
753	return VINF_SUCCESS;
754	}
755
756
757	/** This method executed on main thread, only at the end threr're one threads started explcitly (LWIP and later in ::run()
758	* RECV)
759	*/
760	int VBoxNetLwipNAT::init()
761	{
762	LogFlowFuncEnter();
763
764	/* virtualbox initialized in super class */
765	int rc = ::VBoxNetBaseService::init();
766	AssertRCReturn(rc, rc);
767
768	std::string networkName = getNetwork();
769	rc = findNatNetwork(virtualbox, networkName, m_net);
770	AssertRCReturn(rc, rc);
771
772	ComEventTypeArray aNetEvents;
773	aNetEvents.push_back(VBoxEventType_OnNATNetworkPortForward);
774	aNetEvents.push_back(VBoxEventType_OnNATNetworkSetting);
775	rc = createNatListener(m_listener, virtualbox, this, aNetEvents);
776	AssertRCReturn(rc, rc);
777
778
779	// resolver changes are reported on vbox but are retrieved from
780	// host so stash a pointer for future lookups
781	HRESULT hrc = virtualbox->COMGETTER(Host)(m_host.asOutParam());
782	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
783
784	ComEventTypeArray aVBoxEvents;
785	aVBoxEvents.push_back(VBoxEventType_OnHostNameResolutionConfigurationChange);
786	rc = createNatListener(m_vboxListener, virtualbox, this, aVBoxEvents);
787	AssertRCReturn(rc, rc);
788
789	BOOL fIPv6Enabled = FALSE;
790	hrc = m_net->COMGETTER(IPv6Enabled)(&fIPv6Enabled);
791	AssertComRCReturn(hrc, VERR_NOT_FOUND);
792
793	BOOL fIPv6DefaultRoute = FALSE;
794	if (fIPv6Enabled)
795	{
796	hrc = m_net->COMGETTER(AdvertiseDefaultIPv6RouteEnabled)(&fIPv6DefaultRoute);
797	AssertComRCReturn(hrc, VERR_NOT_FOUND);
798	}
799
800	m_ProxyOptions.ipv6_enabled = fIPv6Enabled;
801	m_ProxyOptions.ipv6_defroute = fIPv6DefaultRoute;
802
803
804	com::Bstr bstrSourceIp4Key = com::BstrFmt("NAT/%s/SourceIp4", networkName.c_str());
805	com::Bstr bstrSourceIpX;
806	hrc = virtualbox->GetExtraData(bstrSourceIp4Key.raw(), bstrSourceIpX.asOutParam());
807	if (SUCCEEDED(hrc))
808	{
809	RTNETADDRIPV4 addr;
810	rc = RTNetStrToIPv4Addr(com::Utf8Str(bstrSourceIpX).c_str(), &addr);
811	if (RT_SUCCESS(rc))
812	{
813	RT_ZERO(m_src4);
814
815	m_src4.sin_addr.s_addr = addr.u;
816	m_ProxyOptions.src4 = &m_src4;
817
818	bstrSourceIpX.setNull();
819	}
820	}
821
822	if (!fDontLoadRulesOnStartup)
823	{
824	fetchNatPortForwardRules(m_net, false, m_vecPortForwardRule4);
825	fetchNatPortForwardRules(m_net, true, m_vecPortForwardRule6);
826	} /* if (!fDontLoadRulesOnStartup) */
827
828	AddressToOffsetMapping tmp;
829	rc = localMappings(m_net, tmp);
830	if (RT_SUCCESS(rc) && tmp.size() != 0)
831	{
832	unsigned long i = 0;
833	for (AddressToOffsetMapping::iterator it = tmp.begin();
834	it != tmp.end() && i < RT_ELEMENTS(m_lo2off);
835	++it, ++i)
836	{
837	ip4_addr_set_u32(&m_lo2off[i].loaddr, it->first.u);
838	m_lo2off[i].off = it->second;
839	}
840
841	m_loOptDescriptor.lomap = m_lo2off;
842	m_loOptDescriptor.num_lomap = i;
843	m_ProxyOptions.lomap_desc = &m_loOptDescriptor;
844	}
845
846	com::Bstr bstr;
847	hrc = virtualbox->COMGETTER(HomeFolder)(bstr.asOutParam());
848	AssertComRCReturn(hrc, VERR_NOT_FOUND);
849	if (!bstr.isEmpty())
850	{
851	com::Utf8Str strTftpRoot(com::Utf8StrFmt("%ls%c%s",
852	bstr.raw(), RTPATH_DELIMITER, "TFTP"));
853	char pszStrTemp; // avoid const char * vs char **
854	rc = RTStrUtf8ToCurrentCP(&pszStrTemp, strTftpRoot.c_str());
855	AssertRC(rc);
856	m_ProxyOptions.tftp_root = pszStrTemp;
857	}
858
859	m_ProxyOptions.nameservers = getHostNameservers();
860
861	/* end of COM initialization */
862
863	rc = g_pLwipNat->tryGoOnline();
864	if (RT_FAILURE(rc))
865	{
866	return rc;
867	}
868
869	/* this starts LWIP thread */
870	vboxLwipCoreInitialize(VBoxNetLwipNAT::onLwipTcpIpInit, this);
871
872	LogFlowFuncLeaveRC(rc);
873	return rc;
874	}
875
876
877	const char **VBoxNetLwipNAT::getHostNameservers()
878	{
879	HRESULT hrc;
880
881	if (m_host.isNull())
882	{
883	return NULL;
884	}
885
886	com::SafeArray<BSTR> aNameServers;
887	hrc = m_host->COMGETTER(NameServers)(ComSafeArrayAsOutParam(aNameServers));
888	if (FAILED(hrc))
889	{
890	return NULL;
891	}
892
893	const size_t cNameServers = aNameServers.size();
894	if (cNameServers == 0)
895	{
896	return NULL;
897	}
898
899	const char **ppcszNameServers =
900	(const char *)RTMemAllocZ(sizeof(char ) * (cNameServers + 1));
901	if (ppcszNameServers == NULL)
902	{
903	return NULL;
904	}
905
906	size_t idxLast = 0;
907	for (size_t i = 0; i < cNameServers; ++i)
908	{
909	com::Utf8Str strNameServer(aNameServers[i]);
910	ppcszNameServers[idxLast] = RTStrDup(strNameServer.c_str());
911	if (ppcszNameServers[idxLast] != NULL)
912	{
913	++idxLast;
914	}
915	}
916
917	if (idxLast == 0)
918	{
919	RTMemFree(ppcszNameServers);
920	return NULL;
921	}
922
923	return ppcszNameServers;
924	}
925
926
927	int VBoxNetLwipNAT::parseOpt(int rc, const RTGETOPTUNION& Val)
928	{
929	switch (rc)
930	{
931	case 'p':
932	case 'P':
933	{
934	NATSEVICEPORTFORWARDRULE Rule;
935	VECNATSERVICEPF& rules = (rc == 'P'?
936	m_vecPortForwardRule6
937	: m_vecPortForwardRule4);
938
939	fDontLoadRulesOnStartup = true;
940
941	RT_ZERO(Rule);
942
943	int irc = netPfStrToPf(Val.psz, (rc == 'P'), &Rule.Pfr);
944	rules.push_back(Rule);
945	return VINF_SUCCESS;
946	}
947	default:;
948	}
949	return VERR_NOT_FOUND;
950	}
951
952
953	int VBoxNetLwipNAT::processFrame(void *pvFrame, size_t cbFrame)
954	{
955	AssertPtrReturn(pvFrame, VERR_INVALID_PARAMETER);
956	AssertReturn(cbFrame != 0, VERR_INVALID_PARAMETER);
957
958	struct pbuf *p = pbuf_alloc(PBUF_RAW, cbFrame + ETH_PAD_SIZE, PBUF_POOL);
959	if (RT_UNLIKELY(p == NULL))
960	{
961	return VERR_NO_MEMORY;
962	}
963
964	/*
965	* The code below is inlined version of:
966	*
967	* pbuf_header(p, -ETH_PAD_SIZE); // hide padding
968	* pbuf_take(p, pvFrame, cbFrame);
969	* pbuf_header(p, ETH_PAD_SIZE); // reveal padding
970	*/
971	struct pbuf *q = p;
972	uint8_t pu8Chunk = (uint8_t )pvFrame;
973	do {
974	uint8_t payload = (uint8_t )q->payload;
975	size_t len = q->len;
976
977	#if ETH_PAD_SIZE
978	if (RT_LIKELY(q == p)) // single pbuf is large enough
979	{
980	payload += ETH_PAD_SIZE;
981	len -= ETH_PAD_SIZE;
982	}
983	#endif
984	memcpy(payload, pu8Chunk, len);
985	pu8Chunk += len;
986	q = q->next;
987	} while (RT_UNLIKELY(q != NULL));
988
989	m_LwipNetIf.input(p, &m_LwipNetIf);
990	return VINF_SUCCESS;
991	}
992
993
994	int VBoxNetLwipNAT::processGSO(PCPDMNETWORKGSO pGso, size_t cbFrame)
995	{
996	if (!PDMNetGsoIsValid(pGso, cbFrame,
997	cbFrame - sizeof(PDMNETWORKGSO)))
998	return VERR_INVALID_PARAMETER;
999
1000	cbFrame -= sizeof(PDMNETWORKGSO);
1001	uint8_t abHdrScratch[256];
1002	uint32_t const cSegs = PDMNetGsoCalcSegmentCount(pGso,
1003	cbFrame);
1004	for (size_t iSeg = 0; iSeg < cSegs; iSeg++)
1005	{
1006	uint32_t cbSegFrame;
1007	void *pvSegFrame =
1008	PDMNetGsoCarveSegmentQD(pGso,
1009	(uint8_t *)(pGso + 1),
1010	cbFrame,
1011	abHdrScratch,
1012	iSeg,
1013	cSegs,
1014	&cbSegFrame);
1015
1016	int rc = processFrame(pvSegFrame, cbSegFrame);
1017	if (RT_FAILURE(rc))
1018	{
1019	return rc;
1020	}
1021	}
1022
1023	return VINF_SUCCESS;
1024	}
1025
1026
1027	int VBoxNetLwipNAT::run()
1028	{
1029	/* Father starts receiving thread and enter event loop. */
1030	VBoxNetBaseService::run();
1031
1032	vboxLwipCoreFinalize(VBoxNetLwipNAT::onLwipTcpIpFini, this);
1033
1034	m_vecPortForwardRule4.clear();
1035	m_vecPortForwardRule6.clear();
1036
1037	return VINF_SUCCESS;
1038	}
1039
1040
1041	/**
1042	* Entry point.
1043	*/
1044	extern "C" DECLEXPORT(int) TrustedMain(int argc, char argv, char envp)
1045	{
1046	int rc;
1047
1048	LogFlowFuncEnter();
1049
1050	NOREF(envp);
1051
1052	#ifdef RT_OS_WINDOWS
1053	WSADATA wsaData;
1054	int err;
1055
1056	err = WSAStartup(MAKEWORD(2,2), &wsaData);
1057	if (err)
1058	{
1059	fprintf(stderr, "wsastartup: failed (%d)\n", err);
1060	return 1;
1061	}
1062	#endif
1063
1064	SOCKET icmpsock4 = INVALID_SOCKET;
1065	SOCKET icmpsock6 = INVALID_SOCKET;
1066	#ifndef RT_OS_DARWIN
1067	const int icmpstype = SOCK_RAW;
1068	#else
1069	/* on OS X it's not privileged */
1070	const int icmpstype = SOCK_DGRAM;
1071	#endif
1072
1073	icmpsock4 = socket(AF_INET, icmpstype, IPPROTO_ICMP);
1074	if (icmpsock4 == INVALID_SOCKET)
1075	{
1076	perror("IPPROTO_ICMP");
1077	#ifdef VBOX_RAWSOCK_DEBUG_HELPER
1078	icmpsock4 = getrawsock(AF_INET);
1079	#endif
1080	}
1081
1082	if (icmpsock4 != INVALID_SOCKET)
1083	{
1084	#ifdef ICMP_FILTER // Linux specific
1085	struct icmp_filter flt = {
1086	~(uint32_t)(
1087	(1U << ICMP_ECHOREPLY)
1088	\| (1U << ICMP_DEST_UNREACH)
1089	\| (1U << ICMP_TIME_EXCEEDED)
1090	)
1091	};
1092
1093	int status = setsockopt(icmpsock4, SOL_RAW, ICMP_FILTER,
1094	&flt, sizeof(flt));
1095	if (status < 0)
1096	{
1097	perror("ICMP_FILTER");
1098	}
1099	#endif
1100	}
1101
1102	icmpsock6 = socket(AF_INET6, icmpstype, IPPROTO_ICMPV6);
1103	if (icmpsock6 == INVALID_SOCKET)
1104	{
1105	perror("IPPROTO_ICMPV6");
1106	#ifdef VBOX_RAWSOCK_DEBUG_HELPER
1107	icmpsock6 = getrawsock(AF_INET6);
1108	#endif
1109	}
1110
1111	if (icmpsock6 != INVALID_SOCKET)
1112	{
1113	#ifdef ICMP6_FILTER // Windows doesn't support RFC 3542 API
1114	/*
1115	* XXX: We do this here for now, not in pxping.c, to avoid
1116	* name clashes between lwIP and system headers.
1117	*/
1118	struct icmp6_filter flt;
1119	ICMP6_FILTER_SETBLOCKALL(&flt);
1120
1121	ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &flt);
1122
1123	ICMP6_FILTER_SETPASS(ICMP6_DST_UNREACH, &flt);
1124	ICMP6_FILTER_SETPASS(ICMP6_PACKET_TOO_BIG, &flt);
1125	ICMP6_FILTER_SETPASS(ICMP6_TIME_EXCEEDED, &flt);
1126	ICMP6_FILTER_SETPASS(ICMP6_PARAM_PROB, &flt);
1127
1128	int status = setsockopt(icmpsock6, IPPROTO_ICMPV6, ICMP6_FILTER,
1129	&flt, sizeof(flt));
1130	if (status < 0)
1131	{
1132	perror("ICMP6_FILTER");
1133	}
1134	#endif
1135	}
1136
1137	HRESULT hrc = com::Initialize();
1138	if (FAILED(hrc))
1139	{
1140	#ifdef VBOX_WITH_XPCOM
1141	if (hrc == NS_ERROR_FILE_ACCESS_DENIED)
1142	{
1143	char szHome[RTPATH_MAX] = "";
1144	int vrc = com::GetVBoxUserHomeDirectory(szHome, sizeof(szHome), false);
1145	if (RT_SUCCESS(vrc))
1146	{
1147	return RTMsgErrorExit(RTEXITCODE_FAILURE,
1148	"Failed to initialize COM: %s: %Rhrf",
1149	szHome, hrc);
1150	}
1151	}
1152	#endif // VBOX_WITH_XPCOM
1153	return RTMsgErrorExit(RTEXITCODE_FAILURE,
1154	"Failed to initialize COM: %Rhrf", hrc);
1155	}
1156
1157	rc = vboxNetNATLogInit(argc, argv);
1158	// shall we bail if we failed to init logging?
1159
1160	g_pLwipNat = new VBoxNetLwipNAT(icmpsock4, icmpsock6);
1161
1162	Log2(("NAT: initialization\n"));
1163	rc = g_pLwipNat->parseArgs(argc - 1, argv + 1);
1164	rc = (rc == 0) ? VINF_SUCCESS : VERR_GENERAL_FAILURE; /* XXX: FIXME */
1165
1166	if (RT_SUCCESS(rc))
1167	{
1168	rc = g_pLwipNat->init();
1169	}
1170
1171	if (RT_SUCCESS(rc))
1172	{
1173	g_pLwipNat->run();
1174	}
1175
1176	delete g_pLwipNat;
1177	return 0;
1178	}
1179
1180
1181	static int vboxNetNATLogInit(int argc, char **argv)
1182	{
1183	size_t cch;
1184	int rc;
1185
1186	char szHome[RTPATH_MAX];
1187	rc = com::GetVBoxUserHomeDirectory(szHome, sizeof(szHome), false);
1188	if (RT_FAILURE(rc))
1189	return rc;
1190
1191	const char *pcszNetwork = NULL;
1192
1193	// XXX: This duplicates information from VBoxNetBaseService.cpp.
1194	// Perhaps option definitions should be exported as public static
1195	// member of VBoxNetBaseService?
1196	static const RTGETOPTDEF s_aOptions[] = {
1197	{ "--network", 'n', RTGETOPT_REQ_STRING }
1198	};
1199
1200	RTGETOPTSTATE GetState;
1201	RTGetOptInit(&GetState, argc, argv, s_aOptions, RT_ELEMENTS(s_aOptions), 1,
1202	RTGETOPTINIT_FLAGS_NO_STD_OPTS);
1203
1204	RTGETOPTUNION ValueUnion;
1205	int ch;
1206	while ((ch = RTGetOpt(&GetState, &ValueUnion)))
1207	{
1208	if (ch == 'n')
1209	{
1210	pcszNetwork = ValueUnion.psz;
1211	break;
1212	}
1213	}
1214
1215	if (pcszNetwork == NULL)
1216	{
1217	return VERR_MISSING;
1218	}
1219
1220	char szNetwork[RTPATH_MAX];
1221	rc = RTStrCopy(szNetwork, sizeof(szNetwork), pcszNetwork);
1222	if (RT_FAILURE(rc))
1223	{
1224	return rc;
1225	}
1226
1227	// sanitize network name to be usable as a path component
1228	for (char p = szNetwork; p != '\0'; ++p)
1229	{
1230	if (RTPATH_IS_SEP(*p))
1231	{
1232	*p = '_';
1233	}
1234	}
1235
1236	char szLogFile[RTPATH_MAX];
1237	cch = RTStrPrintf(szLogFile, sizeof(szLogFile),
1238	"%s%c%s.log", szHome, RTPATH_DELIMITER, szNetwork);
1239	if (cch >= sizeof(szLogFile))
1240	{
1241	return VERR_BUFFER_OVERFLOW;
1242	}
1243
1244	// sanitize network name some more to be usable as environment variable
1245	for (char p = szNetwork; p != '\0'; ++p)
1246	{
1247	if (*p != '_'
1248	&& (p < '0' \|\| '9' < p)
1249	&& (p < 'a' \|\| 'z' < p)
1250	&& (p < 'A' \|\| 'Z' < p))
1251	{
1252	*p = '_';
1253	}
1254	}
1255
1256	char szEnvVarBase[128];
1257	cch = RTStrPrintf(szEnvVarBase, sizeof(szEnvVarBase),
1258	"VBOXNET_%s_RELEASE_LOG", szNetwork);
1259	if (cch >= sizeof(szEnvVarBase))
1260	{
1261	return VERR_BUFFER_OVERFLOW;
1262	}
1263
1264	char szError[RTPATH_MAX + 128];
1265	rc = com::VBoxLogRelCreate("NAT Network",
1266	szLogFile,
1267	RTLOGFLAGS_PREFIX_TIME_PROG,
1268	"all all.restrict -default.restrict",
1269	szEnvVarBase,
1270	RTLOGDEST_FILE,
1271	32768 /* cMaxEntriesPerGroup */,
1272	0 /* cHistory */,
1273	0 /* uHistoryFileTime */,
1274	0 /* uHistoryFileSize */,
1275	szError, sizeof(szError));
1276	return rc;
1277	}
1278
1279
1280	static int fetchNatPortForwardRules(const ComNatPtr& nat, bool fIsIPv6, VECNATSERVICEPF& vec)
1281	{
1282	HRESULT hrc;
1283	com::SafeArray<BSTR> rules;
1284	if (fIsIPv6)
1285	hrc = nat->COMGETTER(PortForwardRules6)(ComSafeArrayAsOutParam(rules));
1286	else
1287	hrc = nat->COMGETTER(PortForwardRules4)(ComSafeArrayAsOutParam(rules));
1288	AssertReturn(SUCCEEDED(hrc), VERR_INTERNAL_ERROR);
1289
1290	NATSEVICEPORTFORWARDRULE Rule;
1291	for (size_t idxRules = 0; idxRules < rules.size(); ++idxRules)
1292	{
1293	Log(("%d-%s rule: %ls\n", idxRules, (fIsIPv6 ? "IPv6" : "IPv4"), rules[idxRules]));
1294	RT_ZERO(Rule);
1295
1296	int rc = netPfStrToPf(com::Utf8Str(rules[idxRules]).c_str(),
1297	fIsIPv6, &Rule.Pfr);
1298	if (RT_FAILURE(rc))
1299	continue;
1300
1301	vec.push_back(Rule);
1302	}
1303
1304	return VINF_SUCCESS;
1305	}
1306
1307
1308	#ifndef VBOX_WITH_HARDENING
1309
1310	int main(int argc, char argv, char envp)
1311	{
1312	int rc = RTR3InitExe(argc, &argv, RTR3INIT_FLAGS_SUPLIB);
1313	if (RT_FAILURE(rc))
1314	return RTMsgInitFailure(rc);
1315
1316	return TrustedMain(argc, argv, envp);
1317	}
1318
1319	# if defined(RT_OS_WINDOWS)
1320
1321	static LRESULT CALLBACK WindowProc(HWND hwnd,
1322	UINT uMsg,
1323	WPARAM wParam,
1324	LPARAM lParam
1325	)
1326	{
1327	if(uMsg == WM_DESTROY)
1328	{
1329	PostQuitMessage(0);
1330	return 0;
1331	}
1332	return DefWindowProc (hwnd, uMsg, wParam, lParam);
1333	}
1334
1335	static LPCWSTR g_WndClassName = L"VBoxNetNatLwipClass";
1336
1337	static DWORD WINAPI MsgThreadProc(__in LPVOID lpParameter)
1338	{
1339	HWND hwnd = 0;
1340	HINSTANCE hInstance = (HINSTANCE)GetModuleHandle (NULL);
1341	bool bExit = false;
1342
1343	/* Register the Window Class. */
1344	WNDCLASS wc;
1345	wc.style = 0;
1346	wc.lpfnWndProc = WindowProc;
1347	wc.cbClsExtra = 0;
1348	wc.cbWndExtra = sizeof(void *);
1349	wc.hInstance = hInstance;
1350	wc.hIcon = NULL;
1351	wc.hCursor = NULL;
1352	wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND + 1);
1353	wc.lpszMenuName = NULL;
1354	wc.lpszClassName = g_WndClassName;
1355
1356	ATOM atomWindowClass = RegisterClass(&wc);
1357
1358	if (atomWindowClass != 0)
1359	{
1360	/* Create the window. */
1361	hwnd = CreateWindowEx (WS_EX_TOOLWINDOW \| WS_EX_TRANSPARENT \| WS_EX_TOPMOST,
1362	g_WndClassName, g_WndClassName,
1363	WS_POPUPWINDOW,
1364	-200, -200, 100, 100, NULL, NULL, hInstance, NULL);
1365
1366	if (hwnd)
1367	{
1368	SetWindowPos(hwnd, HWND_TOPMOST, -200, -200, 0, 0,
1369	SWP_NOACTIVATE \| SWP_HIDEWINDOW \| SWP_NOCOPYBITS \| SWP_NOREDRAW \| SWP_NOSIZE);
1370
1371	MSG msg;
1372	while (GetMessage(&msg, NULL, 0, 0))
1373	{
1374	TranslateMessage(&msg);
1375	DispatchMessage(&msg);
1376	}
1377
1378	DestroyWindow (hwnd);
1379
1380	bExit = true;
1381	}
1382
1383	UnregisterClass (g_WndClassName, hInstance);
1384	}
1385
1386	if(bExit)
1387	{
1388	/* no need any accuracy here, in anyway the DHCP server usually gets terminated with TerminateProcess */
1389	exit(0);
1390	}
1391
1392	return 0;
1393	}
1394
1395
1396
1397	/** (We don't want a console usually.) */
1398	int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
1399	{
1400	#if 0
1401	NOREF(hInstance); NOREF(hPrevInstance); NOREF(lpCmdLine); NOREF(nCmdShow);
1402
1403	HANDLE hThread = CreateThread(
1404	NULL, /__in_opt LPSECURITY_ATTRIBUTES lpThreadAttributes, /
1405	0, /__in SIZE_T dwStackSize, /
1406	MsgThreadProc, /__in LPTHREAD_START_ROUTINE lpStartAddress,/
1407	NULL, /__in_opt LPVOID lpParameter,/
1408	0, /__in DWORD dwCreationFlags,/
1409	NULL /__out_opt LPDWORD lpThreadId/
1410	);
1411
1412	if(hThread != NULL)
1413	CloseHandle(hThread);
1414
1415	#endif
1416	return main(__argc, __argv, environ);
1417	}
1418	# endif /* RT_OS_WINDOWS */
1419
1420	#endif /* !VBOX_WITH_HARDENING */

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source: vbox/trunk/src/VBox/NetworkServices/NAT/VBoxNetLwipNAT.cpp@ 52054

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