VBoxNetLwipNAT.cpp@ 48310

Last change on this file since 48310 was 48289, checked in by vboxsync, 11 years ago
Move code to set up IPv6 addresses to VBoxNetLwipNAT::netifInit. While there, clean up netifInit a bit.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 33.8 KB

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1	/* $Id: VBoxNetLwipNAT.cpp 48289 2013-09-05 03:23:26Z 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	#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
29	#define IPv6 /* RTNETADDRU */
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 "proxytest.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	class PortForwardListener;
124
125	class VBoxNetLwipNAT: public VBoxNetBaseService
126	{
127	friend class PortForwardListener;
128	public:
129	VBoxNetLwipNAT();
130	virtual ~VBoxNetLwipNAT();
131	void usage(){ /* @todo: should be implemented */ };
132	int run();
133	virtual int init(void);
134	/* @todo: when configuration would be really needed */
135	virtual int parseOpt(int rc, const RTGETOPTUNION& getOptVal);
136
137	private:
138	struct proxy_options m_ProxyOptions;
139	struct sockaddr_in m_src4;
140	struct sockaddr_in6 m_src6;
141
142	uint16_t m_u16Mtu;
143	netif m_LwipNetIf;
144	/* Queues */
145	RTREQQUEUE hReqIntNet;
146	/* thread where we're waiting for a frames, no semaphores needed */
147	RTTHREAD hThrIntNetRecv;
148
149	/* Our NAT network descriptor in Main */
150	ComPtr<INATNetwork> net;
151	STDMETHOD(HandleEvent)(VBoxEventType_T aEventType, IEvent *pEvent);
152
153	RTSEMEVENT hSemSVC;
154	/* Only for debug needs, by default NAT service should load rules from SVC
155	* on startup, and then on sync them on events.
156	*/
157	bool fDontLoadRulesOnStartup;
158	static void onLwipTcpIpInit(void *arg);
159	static void onLwipTcpIpFini(void *arg);
160	static err_t netifInit(netif *pNetif);
161	static err_t netifLinkoutput(netif pNetif, pbuf pBuf);
162	static int intNetThreadRecv(RTTHREAD, void *);
163	static void vboxNetLwipNATProcessXmit(void);
164
165	VECNATSERVICEPF m_vecPortForwardRule4;
166	VECNATSERVICEPF m_vecPortForwardRule6;
167
168	static int natServicePfRegister(NATSEVICEPORTFORWARDRULE& natServicePf);
169	static int natServiceProcessRegisteredPf(VECNATSERVICEPF& vecPf);
170	};
171
172
173	class PortForwardListener
174	{
175	public:
176	PortForwardListener(){}
177	virtual ~PortForwardListener(){}
178	HRESULT init(VBoxNetLwipNAT *pNAT) { m_pNAT = pNAT; return S_OK; }
179	HRESULT init() { return S_OK; }
180	void uninit(){}
181	STDMETHOD(HandleEvent)(VBoxEventType_T aEventType, IEvent *pEvent)
182	{return m_pNAT->HandleEvent(aEventType, pEvent);};
183	private:
184	VBoxNetLwipNAT *m_pNAT;
185	};
186
187
188	typedef ListenerImpl<PortForwardListener, VBoxNetLwipNAT *> PortForwardListenerImpl;
189
190
191	VBOX_LISTENER_DECLARE(PortForwardListenerImpl)
192
193
194
195	static VBoxNetLwipNAT *g_pLwipNat;
196
197
198	STDMETHODIMP VBoxNetLwipNAT::HandleEvent(VBoxEventType_T aEventType,
199	IEvent *pEvent)
200	{
201	HRESULT hrc = S_OK;
202	switch (aEventType)
203	{
204	case VBoxEventType_OnNATNetworkPortForward:
205	{
206	com::Bstr name, strHostAddr, strGuestAddr;
207	LONG lHostPort, lGuestPort;
208	BOOL fCreateFW, fIPv6FW;
209	NATProtocol_T proto = NATProtocol_TCP;
210
211
212	ComPtr<INATNetworkPortForwardEvent> pfEvt = pEvent;
213
214	hrc = pfEvt->COMGETTER(Name)(name.asOutParam());
215	AssertReturn(SUCCEEDED(hrc), hrc);
216
217	hrc = pfEvt->COMGETTER(Proto)(&proto);
218	AssertReturn(SUCCEEDED(hrc), hrc);
219
220	hrc = pfEvt->COMGETTER(HostIp)(strHostAddr.asOutParam());
221	AssertReturn(SUCCEEDED(hrc), hrc);
222
223	hrc = pfEvt->COMGETTER(HostPort)(&lHostPort);
224	AssertReturn(SUCCEEDED(hrc), hrc);
225
226	hrc = pfEvt->COMGETTER(GuestIp)(strGuestAddr.asOutParam());
227	AssertReturn(SUCCEEDED(hrc), hrc);
228
229	hrc = pfEvt->COMGETTER(HostPort)(&lGuestPort);
230	AssertReturn(SUCCEEDED(hrc), hrc);
231
232	hrc = pfEvt->COMGETTER(Create)(&fCreateFW);
233	AssertReturn(SUCCEEDED(hrc), hrc);
234
235	hrc = pfEvt->COMGETTER(Ipv6)(&fIPv6FW);
236	AssertReturn(SUCCEEDED(hrc), hrc);
237
238	VECNATSERVICEPF& rules = (fIPv6FW ?
239	m_vecPortForwardRule6 :
240	m_vecPortForwardRule4);
241
242	NATSEVICEPORTFORWARDRULE r;
243
244	RT_ZERO(r);
245
246	if (name.length() > RT_ELEMENTS(r.Pfr.aszPfrName))
247	{
248	hrc = E_INVALIDARG;
249	goto port_forward_done;
250	}
251
252	switch (proto)
253	{
254	case NATProtocol_TCP:
255	r.Pfr.iPfrProto = IPPROTO_TCP;
256	break;
257	case NATProtocol_UDP:
258	r.Pfr.iPfrProto = IPPROTO_UDP;
259	break;
260	default:
261	goto port_forward_done;
262	}
263
264
265	RTStrPrintf(r.Pfr.aszPfrName, RT_ELEMENTS(r.Pfr.aszPfrName),
266	"%s",
267	com::Utf8Str(name).c_str());
268
269	RTStrPrintf(r.Pfr.aszPfrHostAddr, RT_ELEMENTS(r.Pfr.aszPfrHostAddr),
270	"%s",
271	com::Utf8Str(strHostAddr).c_str());
272
273	/* XXX: limits should be checked */
274	r.Pfr.u16PfrHostPort = (uint16_t)lHostPort;
275
276	RTStrPrintf(r.Pfr.aszPfrHostAddr, RT_ELEMENTS(r.Pfr.aszPfrGuestAddr),
277	"%s",
278	com::Utf8Str(strHostAddr).c_str());
279
280	/* XXX: limits should be checked */
281	r.Pfr.u16PfrGuestPort = (uint16_t)lGuestPort;
282
283	if (fCreateFW) /* Addition */
284	{
285	rules.push_back(r);
286
287	natServicePfRegister(rules.back());
288	}
289	else /* Deletion */
290	{
291	ITERATORNATSERVICEPF it;
292	for (it = rules.begin(); it != rules.end(); ++it)
293	{
294	/* compare */
295	NATSEVICEPORTFORWARDRULE& natFw = *it;
296	if ( natFw.Pfr.iPfrProto == r.Pfr.iPfrProto
297	&& natFw.Pfr.u16PfrHostPort == r.Pfr.u16PfrHostPort
298	&& (strncmp(natFw.Pfr.aszPfrHostAddr, r.Pfr.aszPfrHostAddr, INET6_ADDRSTRLEN) == 0)
299	&& natFw.Pfr.u16PfrGuestPort == r.Pfr.u16PfrGuestPort
300	&& (strncmp(natFw.Pfr.aszPfrGuestAddr, r.Pfr.aszPfrGuestAddr, INET6_ADDRSTRLEN) == 0))
301	{
302	fwspec pFwCopy = (fwspec )RTMemAllocZ(sizeof(fwspec));
303	if (!pFwCopy)
304	{
305	break;
306	}
307	memcpy(pFwCopy, &natFw.FWSpec, sizeof(fwspec));
308
309	/* We shouldn't care about pFwCopy this memory will be freed when
310	* will message will arrive to the destination.
311	*/
312	portfwd_rule_del(pFwCopy);
313
314	rules.erase(it);
315	break;
316	}
317	} /* loop over vector elements */
318	} /* condition add or delete */
319	port_forward_done:
320	/* clean up strings */
321	name.setNull();
322	strHostAddr.setNull();
323	strGuestAddr.setNull();
324	break;
325	}
326	}
327	return hrc;
328	}
329
330
331	void VBoxNetLwipNAT::onLwipTcpIpInit(void* arg)
332	{
333	AssertPtrReturnVoid(arg);
334	VBoxNetLwipNAT pThis = (VBoxNetLwipNAT )arg;
335
336	HRESULT hrc = com::Initialize();
337	Assert(!FAILED(hrc));
338
339	proxy_arp_hook = pxremap_proxy_arp;
340	proxy_ip4_divert_hook = pxremap_ip4_divert;
341
342	proxy_na_hook = pxremap_proxy_na;
343	proxy_ip6_divert_hook = pxremap_ip6_divert;
344
345	/* lwip thread */
346	RTNETADDRIPV4 IpNetwork;
347	IpNetwork.u = g_pLwipNat->m_Ipv4Address.u & g_pLwipNat->m_Ipv4Netmask.u;
348
349	ip_addr LwipIpAddr, LwipIpNetMask, LwipIpNetwork;
350
351	memcpy(&LwipIpAddr, &g_pLwipNat->m_Ipv4Address, sizeof(ip_addr));
352	memcpy(&LwipIpNetMask, &g_pLwipNat->m_Ipv4Netmask, sizeof(ip_addr));
353	memcpy(&LwipIpNetwork, &IpNetwork, sizeof(ip_addr));
354
355	netif pNetif = netif_add(&g_pLwipNat->m_LwipNetIf / Lwip Interface */,
356	&LwipIpAddr /* IP address*/,
357	&LwipIpNetMask /* Network mask */,
358	&LwipIpAddr /* gateway address, @todo: is self IP acceptable? */,
359	g_pLwipNat /* state */,
360	VBoxNetLwipNAT::netifInit /* netif_init_fn */,
361	lwip_tcpip_input /* netif_input_fn */);
362
363	AssertPtrReturnVoid(pNetif);
364
365	netif_set_up(pNetif);
366	netif_set_link_up(pNetif);
367
368	/*
369	* XXX: lwIP currently only ever calls mld6_joingroup() in
370	* nd6_tmr() for fresh tentative addresses, which is a wrong place
371	* to do it - but I'm not keen on fixing this properly for now
372	* (with correct handling of interface up and down transitions,
373	* etc). So stick it here as a kludge.
374	*/
375	for (int i = 0; i <= 1; ++i) {
376	ip6_addr_t *paddr = netif_ip6_addr(pNetif, i);
377
378	ip6_addr_t solicited_node_multicast_address;
379	ip6_addr_set_solicitednode(&solicited_node_multicast_address,
380	paddr->addr[3]);
381	mld6_joingroup(paddr, &solicited_node_multicast_address);
382	}
383
384	/*
385	* XXX: We must join the solicited-node multicast for the
386	* addresses we do IPv6 NA-proxy for. We map IPv6 loopback to
387	* proxy address + 1. We only need the low 24 bits, and those are
388	* fixed.
389	*/
390	{
391	ip6_addr_t solicited_node_multicast_address;
392
393	ip6_addr_set_solicitednode(&solicited_node_multicast_address,
394	/* last 24 bits of the address */
395	PP_HTONL(0x00000002));
396	mld6_netif_joingroup(pNetif, &solicited_node_multicast_address);
397	}
398
399	proxy_init(&g_pLwipNat->m_LwipNetIf, &g_pLwipNat->m_ProxyOptions);
400
401	natServiceProcessRegisteredPf(g_pLwipNat->m_vecPortForwardRule4);
402	natServiceProcessRegisteredPf(g_pLwipNat->m_vecPortForwardRule6);
403
404	}
405
406
407	void VBoxNetLwipNAT::onLwipTcpIpFini(void* arg)
408	{
409	AssertPtrReturnVoid(arg);
410	VBoxNetLwipNAT pThis = (VBoxNetLwipNAT )arg;
411
412	/* XXX: proxy finalization */
413	netif_set_link_down(&g_pLwipNat->m_LwipNetIf);
414	netif_set_down(&g_pLwipNat->m_LwipNetIf);
415	netif_remove(&g_pLwipNat->m_LwipNetIf);
416
417	}
418
419	/*
420	* Callback for netif_add() to initialize the interface.
421	*/
422	err_t VBoxNetLwipNAT::netifInit(netif *pNetif)
423	{
424	err_t rcLwip = ERR_OK;
425
426	AssertPtrReturn(pNetif, ERR_ARG);
427
428	VBoxNetLwipNAT pNat = static_cast<VBoxNetLwipNAT >(pNetif->state);
429	AssertPtrReturn(pNat, ERR_ARG);
430
431	LogFlowFunc(("ENTER: pNetif[%c%c%d]\n", pNetif->name[0], pNetif->name[1], pNetif->num));
432	/* validity */
433	AssertReturn( pNetif->name[0] == 'N'
434	&& pNetif->name[1] == 'T', ERR_ARG);
435
436
437	pNetif->hwaddr_len = sizeof(RTMAC);
438	memcpy(pNetif->hwaddr, &pNat->m_MacAddress, sizeof(RTMAC));
439
440	pNat->m_u16Mtu = 1500; // XXX: FIXME
441	pNetif->mtu = pNat->m_u16Mtu;
442
443	pNetif->flags = NETIF_FLAG_BROADCAST
444	\| NETIF_FLAG_ETHARP /* Don't bother driver with ARP and let Lwip resolve ARP handling */
445	\| NETIF_FLAG_ETHERNET; /* Lwip works with ethernet too */
446
447	pNetif->linkoutput = netifLinkoutput; /* ether-level-pipe */
448	pNetif->output = lwip_etharp_output; /* ip-pipe */
449	pNetif->output_ip6 = ethip6_output;
450
451	/* IPv6 link-local address in slot 0 */
452	netif_create_ip6_linklocal_address(pNetif, /* :from_mac_48bit */ 1);
453	netif_ip6_addr_set_state(pNetif, 0, IP6_ADDR_PREFERRED); // skip DAD
454
455	/*
456	* RFC 4193 Locally Assigned Global ID (ULA) in slot 1
457	* [fd17:625c:f037:XXXX::1] where XXXX, 16 bit Subnet ID, are two
458	* bytes from the middle of the IPv4 address, e.g. :dead: for
459	* 10.222.173.1
460	*/
461	u8_t nethi = ip4_addr2(&pNetif->ip_addr);
462	u8_t netlo = ip4_addr3(&pNetif->ip_addr);
463
464	ip6_addr_t *paddr = netif_ip6_addr(pNetif, 1);
465	IP6_ADDR(paddr, 0, 0xFD, 0x17, 0x62, 0x5C);
466	IP6_ADDR(paddr, 1, 0xF0, 0x37, nethi, netlo);
467	IP6_ADDR(paddr, 2, 0x00, 0x00, 0x00, 0x00);
468	IP6_ADDR(paddr, 3, 0x00, 0x00, 0x00, 0x01);
469	netif_ip6_addr_set_state(pNetif, 1, IP6_ADDR_PREFERRED);
470
471	#if LWIP_IPV6_SEND_ROUTER_SOLICIT
472	pNetif->rs_count = 0;
473	#endif
474
475	LogFlowFunc(("LEAVE: %d\n", rcLwip));
476	return rcLwip;
477	}
478
479
480	/**
481	* Intnet-recv thread
482	*/
483	int VBoxNetLwipNAT::intNetThreadRecv(RTTHREAD, void *)
484	{
485	int rc = VINF_SUCCESS;
486
487	/* 1. initialization and connection */
488	HRESULT hrc = com::Initialize();
489	if (FAILED(hrc))
490	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Failed to initialize COM!");
491
492	/* Well we're ready */
493	PINTNETRINGBUF pRingBuf = &g_pLwipNat->m_pIfBuf->Recv;
494
495	for (;;)
496	{
497	/*
498	* Wait for a packet to become available.
499	*/
500	/* 2. waiting for request for */
501	rc = g_pLwipNat->waitForIntNetEvent(2000);
502	if (RT_FAILURE(rc))
503	{
504	if (rc == VERR_TIMEOUT \|\| rc == VERR_INTERRUPTED)
505	{
506	/* do we want interrupt anyone ??? */
507	continue;
508	}
509	LogRel(("VBoxNetNAT: waitForIntNetEvent returned %Rrc\n", rc));
510	AssertRCReturn(rc,ERR_IF);
511	}
512
513	/*
514	* Process the receive buffer.
515	*/
516	PCINTNETHDR pHdr;
517
518	while ((pHdr = IntNetRingGetNextFrameToRead(pRingBuf)) != NULL)
519	{
520	uint8_t const u8Type = pHdr->u8Type;
521	size_t cbFrame = pHdr->cbFrame;
522	uint8_t *pu8Frame = NULL;
523	pbuf *pPbufHdr = NULL;
524	pbuf *pPbuf = NULL;
525	switch (u8Type)
526	{
527
528	case INTNETHDR_TYPE_FRAME:
529	/* @todo:should it be really here?
530	* Well well well, we're accessing lwip code here
531	*/
532	pPbufHdr = pPbuf = pbuf_alloc(PBUF_RAW, pHdr->cbFrame, PBUF_POOL);
533	if (!pPbuf)
534	{
535	LogRel(("NAT: Can't allocate send buffer cbFrame=%u\n", cbFrame));
536	break;
537	}
538	Assert(pPbufHdr->tot_len == cbFrame);
539	pu8Frame = (uint8_t *)IntNetHdrGetFramePtr(pHdr, g_pLwipNat->m_pIfBuf);
540	while(pPbuf)
541	{
542	memcpy(pPbuf->payload, pu8Frame, pPbuf->len);
543	pu8Frame += pPbuf->len;
544	pPbuf = pPbuf->next;
545	}
546
547	g_pLwipNat->m_LwipNetIf.input(pPbufHdr, &g_pLwipNat->m_LwipNetIf);
548
549	AssertReleaseRC(rc);
550	break;
551	case INTNETHDR_TYPE_GSO:
552	{
553	PCPDMNETWORKGSO pGso = IntNetHdrGetGsoContext(pHdr,
554	g_pLwipNat->m_pIfBuf);
555	if (!PDMNetGsoIsValid(pGso, cbFrame,
556	cbFrame - sizeof(PDMNETWORKGSO)))
557	break;
558	cbFrame -= sizeof(PDMNETWORKGSO);
559	uint8_t abHdrScratch[256];
560	uint32_t const cSegs = PDMNetGsoCalcSegmentCount(pGso,
561	cbFrame);
562	for (size_t iSeg = 0; iSeg < cSegs; iSeg++)
563	{
564	uint32_t cbSegFrame;
565	void *pvSegFrame =
566	PDMNetGsoCarveSegmentQD(pGso,
567	(uint8_t *)(pGso + 1),
568	cbFrame,
569	abHdrScratch,
570	iSeg,
571	cSegs,
572	&cbSegFrame);
573
574	pPbuf = pbuf_alloc(PBUF_RAW, cbSegFrame, PBUF_POOL);
575	if (!pPbuf)
576	{
577	LogRel(("NAT: Can't allocate send buffer cbFrame=%u\n", cbSegFrame));
578	break;
579	}
580	Assert( !pPbuf->next
581	&& pPbuf->len == cbSegFrame);
582	memcpy(pPbuf->payload, pvSegFrame, cbSegFrame);
583	g_pLwipNat->m_LwipNetIf.input(pPbuf, &g_pLwipNat->m_LwipNetIf);
584
585	}
586
587	}
588	break;
589	case INTNETHDR_TYPE_PADDING:
590	break;
591	default:
592	STAM_REL_COUNTER_INC(&g_pLwipNat->m_pIfBuf->cStatBadFrames);
593	break;
594	}
595	IntNetRingSkipFrame(&g_pLwipNat->m_pIfBuf->Recv);
596
597	} /* loop */
598	}
599	/* 3. deinitilization and termination */
600	LogFlowFuncLeaveRC(rc);
601	return rc;
602	}
603
604
605	/**
606	*
607	*/
608	void VBoxNetLwipNAT::vboxNetLwipNATProcessXmit()
609	{
610	int rc = VINF_SUCCESS;
611	INTNETIFSENDREQ SendReq;
612	SendReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
613	SendReq.Hdr.cbReq = sizeof(SendReq);
614	SendReq.pSession = g_pLwipNat->m_pSession;
615	SendReq.hIf = g_pLwipNat->m_hIf;
616	rc = SUPR3CallVMMR0Ex(NIL_RTR0PTR, NIL_VMCPUID, VMMR0_DO_INTNET_IF_SEND, 0, &SendReq.Hdr);
617	AssertRC(rc);
618	}
619
620
621	err_t VBoxNetLwipNAT::netifLinkoutput(netif pNetif, pbuf pPBuf)
622	{
623	int rc = VINF_SUCCESS;
624	err_t rcLwip = ERR_OK;
625	AssertPtrReturn(pNetif, ERR_ARG);
626	AssertPtrReturn(pPBuf, ERR_ARG);
627	AssertReturn((void *)g_pLwipNat == pNetif->state, ERR_ARG);
628	LogFlowFunc(("ENTER: pNetif[%c%c%d], pPbuf:%p\n",
629	pNetif->name[0],
630	pNetif->name[1],
631	pNetif->num,
632	pPBuf));
633
634	/*
635	* We're on the lwip thread ...
636	* try accure Xmit lock (actually we DO accure the lock ... )
637	* 1. we've entered csXmit so we should create frame
638	* 1.a. Frame creation success see 2.
639	* 1.b. (hm ... what about queue processing in place)
640	* 1.c. 2nd attempt create frame
641	* 1.d. Unlock the Xmit
642	* 1.e. goto BUSY.1
643	* 2. Copy pbuf to the frame
644	* 3. Send
645	* 4. leave csXmit & return.
646	*
647	* @todo: perhaps we can use it for optimization,
648	* e.g. drop UDP and reoccure lock on TCP NOTE: now BUSY is unachievable!
649	* Otherwise (BUSY)
650	* 1. Unbuffered (drop)
651	* (buffered)
652	* 1. Copy pbuf to entermediate buffer.
653	* 2. Add call buffer to the queue
654	* 3. return.
655	*/
656	/* see p.1 */
657	rc = VINF_SUCCESS;
658	PINTNETHDR pHdr = NULL;
659	uint8_t *pu8Frame = NULL;
660	int offFrame = 0;
661	int idxSg = 0;
662	struct pbuf *pPBufPtr = pPBuf;
663	/* Allocate frame, and pad it if required. */
664	rc = IntNetRingAllocateFrame(&g_pLwipNat->m_pIfBuf->Send, pPBuf->tot_len, &pHdr, (void **)&pu8Frame);
665	if (RT_SUCCESS(rc))
666	{
667	/* see p. 2 */
668	while (pPBufPtr)
669	{
670	memcpy(&pu8Frame[offFrame], pPBufPtr->payload, pPBufPtr->len);
671	offFrame += pPBufPtr->len;
672	pPBufPtr = pPBufPtr->next;
673	}
674	}
675	if (RT_FAILURE(rc))
676	{
677	/* Could it be that some frames are still in the ring buffer */
678	/* 1.c */
679	AssertMsgFailed(("Debug Me!"));
680	}
681
682	/* Commit - what really this function do */
683	IntNetRingCommitFrameEx(&g_pLwipNat->m_pIfBuf->Send, pHdr, pPBuf->tot_len);
684
685	g_pLwipNat->vboxNetLwipNATProcessXmit();
686
687	AssertRCReturn(rc, ERR_IF);
688	LogFlowFunc(("LEAVE: %d\n", rcLwip));
689	return rcLwip;
690	}
691
692
693	VBoxNetLwipNAT::VBoxNetLwipNAT()
694	{
695	LogFlowFuncEnter();
696
697	m_ProxyOptions.tftp_root = NULL;
698	m_ProxyOptions.src4 = NULL;
699	m_ProxyOptions.src6 = NULL;
700	memset(&m_src4, 0, sizeof(m_src4));
701	memset(&m_src6, 0, sizeof(m_src6));
702	m_src4.sin_family = AF_INET;
703	m_src6.sin6_family = AF_INET6;
704	#if HAVE_SA_LEN
705	m_src4.sin_len = sizeof(m_src4);
706	m_src6.sin6_len = sizeof(m_src6);
707	#endif
708
709	m_LwipNetIf.name[0] = 'N';
710	m_LwipNetIf.name[1] = 'T';
711	m_MacAddress.au8[0] = 0x52;
712	m_MacAddress.au8[1] = 0x54;
713	m_MacAddress.au8[2] = 0;
714	m_MacAddress.au8[3] = 0x12;
715	m_MacAddress.au8[4] = 0x35;
716	m_MacAddress.au8[5] = 0;
717	m_Ipv4Address.u = RT_MAKE_U32_FROM_U8( 10, 0, 2, 2); // NB: big-endian
718	m_Ipv4Netmask.u = RT_H2N_U32_C(0xffffff00);
719
720	for(unsigned int i = 0; i < RT_ELEMENTS(g_aGetOptDef); ++i)
721	m_vecOptionDefs.push_back(&g_aGetOptDef[i]);
722
723	m_enmTrunkType = kIntNetTrunkType_SrvNat;
724
725	LogFlowFuncLeave();
726	}
727
728
729	VBoxNetLwipNAT::~VBoxNetLwipNAT()
730	{
731	if (m_ProxyOptions.tftp_root != NULL)
732	{
733	RTStrFree((char *)m_ProxyOptions.tftp_root);
734	}
735	}
736
737
738	int VBoxNetLwipNAT::natServicePfRegister(NATSEVICEPORTFORWARDRULE& natPf)
739	{
740	int lrc = 0;
741	int rc = VINF_SUCCESS;
742	int socketSpec = SOCK_STREAM;
743	char *pszHostAddr;
744	int sockFamily = (natPf.Pfr.fPfrIPv6 ? PF_INET6 : PF_INET);
745
746	switch(natPf.Pfr.iPfrProto)
747	{
748	case IPPROTO_TCP:
749	socketSpec = SOCK_STREAM;
750	break;
751	case IPPROTO_UDP:
752	socketSpec = SOCK_DGRAM;
753	break;
754	default:
755	return VERR_IGNORED; /* Ah, just ignore the garbage */
756	}
757
758	pszHostAddr = natPf.Pfr.aszPfrHostAddr;
759
760	/* XXX: workaround for inet_pton and an empty ipv4 address
761	* in rule declaration.
762	*/
763	if ( sockFamily == PF_INET
764	&& pszHostAddr[0] == 0)
765	pszHostAddr = (char )"0.0.0.0"; / XXX: fix it! without type cast */
766
767
768	lrc = fwspec_set(&natPf.FWSpec,
769	sockFamily,
770	socketSpec,
771	pszHostAddr,
772	natPf.Pfr.u16PfrHostPort,
773	natPf.Pfr.aszPfrGuestAddr,
774	natPf.Pfr.u16PfrGuestPort);
775
776	AssertReturn(!lrc, VERR_IGNORED);
777
778	fwspec pFwCopy = (fwspec )RTMemAllocZ(sizeof(fwspec));
779	AssertPtrReturn(pFwCopy, VERR_IGNORED);
780
781	/*
782	* We need pass the copy, because we can't be sure
783	* how much this pointer will be valid in LWIP environment.
784	*/
785	memcpy(pFwCopy, &natPf.FWSpec, sizeof(fwspec));
786
787	lrc = portfwd_rule_add(pFwCopy);
788
789	AssertReturn(!lrc, VERR_IGNORED);
790
791	return VINF_SUCCESS;
792	}
793
794
795	int VBoxNetLwipNAT::natServiceProcessRegisteredPf(VECNATSERVICEPF& vecRules){
796	ITERATORNATSERVICEPF it;
797	for (it = vecRules.begin();
798	it != vecRules.end(); ++it)
799	{
800	int rc = natServicePfRegister((*it));
801	if (RT_FAILURE(rc))
802	{
803	LogRel(("PF: %s is ignored\n", (*it).Pfr.aszPfrName));
804	continue;
805	}
806	}
807	return VINF_SUCCESS;
808	}
809
810
811	int VBoxNetLwipNAT::init()
812	{
813	com::Bstr bstr;
814	int rc = VINF_SUCCESS;
815	LogFlowFuncEnter();
816
817
818	/* virtualbox initialized in super class */
819
820	HRESULT hrc;
821	hrc = virtualbox->FindNATNetworkByName(com::Bstr(m_Network.c_str()).raw(),
822	net.asOutParam());
823	AssertComRCReturn(hrc, VERR_NOT_FOUND);
824	#if !defined(RT_OS_WINDOWS)
825	/* XXX: Temporaly disabled this code on Windows for further debugging */
826	ComPtr<IEventSource> pES;
827
828	hrc = net->COMGETTER(EventSource)(pES.asOutParam());
829	AssertComRC(hrc);
830
831	ComObjPtr<PortForwardListenerImpl> listener;
832	hrc = listener.createObject();
833	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
834
835	hrc = listener->init(new PortForwardListener(), this);
836	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
837
838	com::SafeArray<VBoxEventType_T> events;
839
840	events.push_back(VBoxEventType_OnNATNetworkPortForward);
841
842	hrc = pES->RegisterListener(listener, ComSafeArrayAsInParam(events), true);
843	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
844	#endif
845	if (!fDontLoadRulesOnStartup)
846	{
847	/* XXX: extract function and do not duplicate */
848	com::SafeArray<BSTR> rules;
849	hrc = net->COMGETTER(PortForwardRules4)(ComSafeArrayAsOutParam(rules));
850	Assert(SUCCEEDED(hrc));
851
852	size_t idxRules = 0;
853	for (idxRules = 0; idxRules < rules.size(); ++idxRules)
854	{
855	Log(("%d-rule: %ls\n", idxRules, rules[idxRules]));
856	NATSEVICEPORTFORWARDRULE Rule;
857	RT_ZERO(Rule);
858	rc = netPfStrToPf(com::Utf8Str(rules[idxRules]).c_str(), 0, &Rule.Pfr);
859	AssertRC(rc);
860	m_vecPortForwardRule4.push_back(Rule);
861	}
862
863	rules.setNull();
864	hrc = net->COMGETTER(PortForwardRules6)(ComSafeArrayAsOutParam(rules));
865	Assert(SUCCEEDED(hrc));
866
867	for (idxRules = 0; idxRules < rules.size(); ++idxRules)
868	{
869	Log(("%d-rule: %ls\n", idxRules, rules[idxRules]));
870	NATSEVICEPORTFORWARDRULE Rule;
871	netPfStrToPf(com::Utf8Str(rules[idxRules]).c_str(), 1, &Rule.Pfr);
872	m_vecPortForwardRule4.push_back(Rule);
873	}
874	} /* if (!fDontLoadRulesOnStartup) */
875
876	hrc = virtualbox->COMGETTER(HomeFolder)(bstr.asOutParam());
877	AssertComRCReturn(hrc, VERR_NOT_FOUND);
878	if (!bstr.isEmpty())
879	{
880	com::Utf8Str strTftpRoot(com::Utf8StrFmt("%ls%c%s",
881	bstr.raw(), RTPATH_DELIMITER, "TFTP"));
882	char pszStrTemp; // avoid const char * vs char **
883	rc = RTStrUtf8ToCurrentCP(&pszStrTemp, strTftpRoot.c_str());
884	AssertRC(rc);
885	m_ProxyOptions.tftp_root = pszStrTemp;
886	}
887
888	/* end of COM initialization */
889
890	rc = RTSemEventCreate(&hSemSVC);
891	AssertRCReturn(rc, rc);
892
893	rc = RTReqQueueCreate(&hReqIntNet);
894	AssertRCReturn(rc, rc);
895
896	g_pLwipNat->tryGoOnline();
897	vboxLwipCoreInitialize(VBoxNetLwipNAT::onLwipTcpIpInit, this);
898
899	rc = RTThreadCreate(&g_pLwipNat->hThrIntNetRecv, /* thread handle*/
900	VBoxNetLwipNAT::intNetThreadRecv, /* routine */
901	NULL, /* user data */
902	128 * _1K, /* stack size */
903	RTTHREADTYPE_IO, /* type */
904	0, /* flags, @todo: waitable ?*/
905	"INTNET-RECV");
906	AssertRCReturn(rc,rc);
907
908
909
910	LogFlowFuncLeaveRC(rc);
911	return rc;
912	}
913
914
915	int VBoxNetLwipNAT::parseOpt(int rc, const RTGETOPTUNION& Val)
916	{
917	switch (rc)
918	{
919	case 'p':
920	case 'P':
921	{
922	NATSEVICEPORTFORWARDRULE Rule;
923	VECNATSERVICEPF& rules = (rc == 'P'?
924	m_vecPortForwardRule6
925	: m_vecPortForwardRule4);
926
927	fDontLoadRulesOnStartup = true;
928
929	RT_ZERO(Rule);
930
931	int irc = netPfStrToPf(Val.psz, (rc == 'P'), &Rule.Pfr);
932	rules.push_back(Rule);
933	return VINF_SUCCESS;
934	}
935	default:;
936	}
937	return VERR_NOT_FOUND;
938	}
939
940
941	int VBoxNetLwipNAT::run()
942	{
943
944	while(true)
945	{
946	RTSemEventWait(g_pLwipNat->hSemSVC, RT_INDEFINITE_WAIT);
947	}
948
949	vboxLwipCoreFinalize(VBoxNetLwipNAT::onLwipTcpIpFini, this);
950
951	/* @todo: clean up of port-forward rules */
952	m_vecPortForwardRule4.clear();
953	m_vecPortForwardRule6.clear();
954
955	return VINF_SUCCESS;
956	}
957
958
959	/**
960	* Entry point.
961	*/
962	extern "C" DECLEXPORT(int) TrustedMain(int argc, char argv, char envp)
963	{
964	LogFlowFuncEnter();
965	#ifdef RT_OS_WINDOWS
966	WSADATA wsaData;
967	int err;
968
969	err = WSAStartup(MAKEWORD(2,2), &wsaData);
970	if (err)
971	{
972	fprintf(stderr, "wsastartup: failed (%d)\n", err);
973	return 1;
974	}
975	#endif
976
977	HRESULT hrc = com::Initialize();
978	#ifdef VBOX_WITH_XPCOM
979	if (hrc == NS_ERROR_FILE_ACCESS_DENIED)
980	{
981	char szHome[RTPATH_MAX] = "";
982	com::GetVBoxUserHomeDirectory(szHome, sizeof(szHome));
983	return RTMsgErrorExit(RTEXITCODE_FAILURE,
984	"Failed to initialize COM because the global settings directory '%s' is not accessible!", szHome);
985	}
986	#endif
987	if (FAILED(hrc))
988	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Failed to initialize COM!");
989
990	g_pLwipNat = new VBoxNetLwipNAT();
991
992	Log2(("NAT: initialization\n"));
993	int rc = g_pLwipNat->parseArgs(argc - 1, argv + 1);
994	AssertRC(rc);
995
996
997	if (!rc)
998	{
999
1000	g_pLwipNat->init();
1001	g_pLwipNat->run();
1002
1003	}
1004	delete g_pLwipNat;
1005	return 0;
1006	}
1007
1008
1009	#ifndef VBOX_WITH_HARDENING
1010
1011	int main(int argc, char argv, char envp)
1012	{
1013	int rc = RTR3InitExe(argc, &argv, RTR3INIT_FLAGS_SUPLIB);
1014	if (RT_FAILURE(rc))
1015	return RTMsgInitFailure(rc);
1016
1017	return TrustedMain(argc, argv, envp);
1018	}
1019
1020	# if defined(RT_OS_WINDOWS)
1021
1022	static LRESULT CALLBACK WindowProc(HWND hwnd,
1023	UINT uMsg,
1024	WPARAM wParam,
1025	LPARAM lParam
1026	)
1027	{
1028	if(uMsg == WM_DESTROY)
1029	{
1030	PostQuitMessage(0);
1031	return 0;
1032	}
1033	return DefWindowProc (hwnd, uMsg, wParam, lParam);
1034	}
1035
1036	static LPCWSTR g_WndClassName = L"VBoxNetNatLwipClass";
1037
1038	static DWORD WINAPI MsgThreadProc(__in LPVOID lpParameter)
1039	{
1040	HWND hwnd = 0;
1041	HINSTANCE hInstance = (HINSTANCE)GetModuleHandle (NULL);
1042	bool bExit = false;
1043
1044	/* Register the Window Class. */
1045	WNDCLASS wc;
1046	wc.style = 0;
1047	wc.lpfnWndProc = WindowProc;
1048	wc.cbClsExtra = 0;
1049	wc.cbWndExtra = sizeof(void *);
1050	wc.hInstance = hInstance;
1051	wc.hIcon = NULL;
1052	wc.hCursor = NULL;
1053	wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND + 1);
1054	wc.lpszMenuName = NULL;
1055	wc.lpszClassName = g_WndClassName;
1056
1057	ATOM atomWindowClass = RegisterClass(&wc);
1058
1059	if (atomWindowClass != 0)
1060	{
1061	/* Create the window. */
1062	hwnd = CreateWindowEx (WS_EX_TOOLWINDOW \| WS_EX_TRANSPARENT \| WS_EX_TOPMOST,
1063	g_WndClassName, g_WndClassName,
1064	WS_POPUPWINDOW,
1065	-200, -200, 100, 100, NULL, NULL, hInstance, NULL);
1066
1067	if (hwnd)
1068	{
1069	SetWindowPos(hwnd, HWND_TOPMOST, -200, -200, 0, 0,
1070	SWP_NOACTIVATE \| SWP_HIDEWINDOW \| SWP_NOCOPYBITS \| SWP_NOREDRAW \| SWP_NOSIZE);
1071
1072	MSG msg;
1073	while (GetMessage(&msg, NULL, 0, 0))
1074	{
1075	TranslateMessage(&msg);
1076	DispatchMessage(&msg);
1077	}
1078
1079	DestroyWindow (hwnd);
1080
1081	bExit = true;
1082	}
1083
1084	UnregisterClass (g_WndClassName, hInstance);
1085	}
1086
1087	if(bExit)
1088	{
1089	/* no need any accuracy here, in anyway the DHCP server usually gets terminated with TerminateProcess */
1090	exit(0);
1091	}
1092
1093	return 0;
1094	}
1095
1096
1097
1098	/** (We don't want a console usually.) */
1099	int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
1100	{
1101	#if 0
1102	NOREF(hInstance); NOREF(hPrevInstance); NOREF(lpCmdLine); NOREF(nCmdShow);
1103
1104	HANDLE hThread = CreateThread(
1105	NULL, /__in_opt LPSECURITY_ATTRIBUTES lpThreadAttributes, /
1106	0, /__in SIZE_T dwStackSize, /
1107	MsgThreadProc, /__in LPTHREAD_START_ROUTINE lpStartAddress,/
1108	NULL, /__in_opt LPVOID lpParameter,/
1109	0, /__in DWORD dwCreationFlags,/
1110	NULL /__out_opt LPDWORD lpThreadId/
1111	);
1112
1113	if(hThread != NULL)
1114	CloseHandle(hThread);
1115
1116	#endif
1117	return main(__argc, __argv, environ);
1118	}
1119	# endif /* RT_OS_WINDOWS */
1120
1121	#endif /* !VBOX_WITH_HARDENING */
1122
1123
1124
1125
1126
1127

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source: vbox/trunk/src/VBox/NetworkServices/NAT/VBoxNetLwipNAT.cpp@ 48310

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