VBoxNetDHCP.cpp@ 49826

Last change on this file since 49826 was 49826, checked in by vboxsync, 11 years ago
VBoxNetDHCP: usage of exported functions.
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1	/* $Id: VBoxNetDHCP.cpp 49826 2013-12-09 09:21:41Z vboxsync $ */
2	/** @file
3	* VBoxNetDHCP - DHCP Service for connecting to IntNet.
4	*/
5
6	/*
7	* Copyright (C) 2009-2011 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	/** @page pg_net_dhcp VBoxNetDHCP
19	*
20	* Write a few words...
21	*
22	*/
23
24	/*******************************************************************************
25	* Header Files *
26	*******************************************************************************/
27	#include <VBox/com/com.h>
28	#include <VBox/com/listeners.h>
29	#include <VBox/com/string.h>
30	#include <VBox/com/Guid.h>
31	#include <VBox/com/array.h>
32	#include <VBox/com/ErrorInfo.h>
33	#include <VBox/com/errorprint.h>
34	#include <VBox/com/EventQueue.h>
35	#include <VBox/com/VirtualBox.h>
36
37	#include <iprt/alloca.h>
38	#include <iprt/buildconfig.h>
39	#include <iprt/err.h>
40	#include <iprt/net.h> /* must come before getopt */
41	#include <iprt/getopt.h>
42	#include <iprt/initterm.h>
43	#include <iprt/message.h>
44	#include <iprt/param.h>
45	#include <iprt/path.h>
46	#include <iprt/stream.h>
47	#include <iprt/time.h>
48	#include <iprt/string.h>
49
50	#include <VBox/sup.h>
51	#include <VBox/intnet.h>
52	#include <VBox/intnetinline.h>
53	#include <VBox/vmm/vmm.h>
54	#include <VBox/version.h>
55
56
57	#include "../NetLib/VBoxNetLib.h"
58	#include "../NetLib/shared_ptr.h"
59
60	#include <vector>
61	#include <list>
62	#include <string>
63	#include <map>
64
65	#include "../NetLib/VBoxNetBaseService.h"
66	#include "../NetLib/utils.h"
67
68	#ifdef RT_OS_WINDOWS /* WinMain */
69	# include <Windows.h>
70	# include <stdlib.h>
71	# ifdef INET_ADDRSTRLEN
72	/* On Windows INET_ADDRSTRLEN defined as 22 Ws2ipdef.h, because it include port number */
73	# undef INET_ADDRSTRLEN
74	# endif
75	# define INET_ADDRSTRLEN 16
76	#else
77	# include <netinet/in.h>
78	#endif
79
80
81	#include "Config.h"
82	/*******************************************************************************
83	* Structures and Typedefs *
84	*******************************************************************************/
85	/**
86	* DHCP server instance.
87	*/
88	class VBoxNetDhcp: public VBoxNetBaseService
89	{
90	public:
91	VBoxNetDhcp();
92	virtual ~VBoxNetDhcp();
93
94	int init();
95	int run(void);
96	void usage(void) { /* XXX: document options */ };
97	int parseOpt(int rc, const RTGETOPTUNION& getOptVal);
98	int processFrame(void *, size_t) {return VERR_IGNORED; };
99	int processGSO(PCPDMNETWORKGSO, size_t) {return VERR_IGNORED; };
100	int processUDP(void *, size_t);
101
102
103	protected:
104	bool handleDhcpMsg(uint8_t uMsgType, PCRTNETBOOTP pDhcpMsg, size_t cb);
105
106	void debugPrintV(int32_t iMinLevel, bool fMsg, const char *pszFmt, va_list va) const;
107	static const char *debugDhcpName(uint8_t uMsgType);
108
109	private:
110	int initNoMain();
111	int initWithMain();
112	int fetchAndUpdateDnsInfo();
113
114	protected:
115	/** @name The DHCP server specific configuration data members.
116	* @{ */
117	/*
118	* XXX: what was the plan? SQL3 or plain text file?
119	* How it will coexists with managment from VBoxManagement, who should manage db
120	* in that case (VBoxManage, VBoxSVC ???)
121	*/
122	std::string m_LeaseDBName;
123
124	/** @} */
125
126	/* corresponding dhcp server description in Main */
127	ComPtr<IDHCPServer> m_DhcpServer;
128
129	ComPtr<INATNetwork> m_NATNetwork;
130
131	/*
132	* We will ignore cmd line parameters IFF there will be some DHCP specific arguments
133	* otherwise all paramters will come from Main.
134	*/
135	bool m_fIgnoreCmdLineParameters;
136
137	/*
138	* -b -n 10.0.1.2 -m 255.255.255.0 -> to the list processing in
139	*/
140	typedef struct
141	{
142	char Key;
143	std::string strValue;
144	} CMDLNPRM;
145	std::list<CMDLNPRM> CmdParameterll;
146	typedef std::list<CMDLNPRM>::iterator CmdParameterIterator;
147
148	/** @name Debug stuff
149	* @{ */
150	int32_t m_cVerbosity;
151	uint8_t m_uCurMsgType;
152	size_t m_cbCurMsg;
153	PCRTNETBOOTP m_pCurMsg;
154	VBOXNETUDPHDRS m_CurHdrs;
155	/** @} */
156	};
157
158	/*******************************************************************************
159	* Global Variables *
160	*******************************************************************************/
161	/** Pointer to the DHCP server. */
162	static VBoxNetDhcp *g_pDhcp;
163
164	/* DHCP server specific options */
165	static RTGETOPTDEF g_aOptionDefs[] =
166	{
167	{ "--lease-db", 'D', RTGETOPT_REQ_STRING },
168	{ "--begin-config", 'b', RTGETOPT_REQ_NOTHING },
169	{ "--gateway", 'g', RTGETOPT_REQ_IPV4ADDR },
170	{ "--lower-ip", 'l', RTGETOPT_REQ_IPV4ADDR },
171	{ "--upper-ip", 'u', RTGETOPT_REQ_IPV4ADDR },
172	};
173
174	/**
175	* Construct a DHCP server with a default configuration.
176	*/
177	VBoxNetDhcp::VBoxNetDhcp():VBoxNetBaseService("VBoxNetDhcp", "VBoxNetDhcp")
178	{
179	/* m_enmTrunkType = kIntNetTrunkType_WhateverNone; */
180	RTMAC mac;
181	mac.au8[0] = 0x08;
182	mac.au8[1] = 0x00;
183	mac.au8[2] = 0x27;
184	mac.au8[3] = 0x40;
185	mac.au8[4] = 0x41;
186	mac.au8[5] = 0x42;
187	setMacAddress(mac);
188
189	RTNETADDRIPV4 address;
190	address.u = RT_H2N_U32_C(RT_BSWAP_U32_C(RT_MAKE_U32_FROM_U8( 10, 0, 2, 5)));
191	setIpv4Address(address);
192
193	setSendBufSize(8 * _1K);
194	setRecvBufSize(50 * _1K);
195
196	m_uCurMsgType = UINT8_MAX;
197	m_cbCurMsg = 0;
198	m_pCurMsg = NULL;
199	memset(&m_CurHdrs, '\0', sizeof(m_CurHdrs));
200
201	m_fIgnoreCmdLineParameters = true;
202
203	for(unsigned int i = 0; i < RT_ELEMENTS(g_aOptionDefs); ++i)
204	addCommandLineOption(&g_aOptionDefs[i]);
205	}
206
207
208	/**
209	* Destruct a DHCP server.
210	*/
211	VBoxNetDhcp::~VBoxNetDhcp()
212	{
213	}
214
215
216
217
218	/**
219	* Parse the DHCP specific arguments.
220	*
221	* This callback caled for each paramenter so
222	* ....
223	* we nee post analisys of the parameters, at least
224	* for -b, -g, -l, -u, -m
225	*/
226	int VBoxNetDhcp::parseOpt(int rc, const RTGETOPTUNION& Val)
227	{
228	CMDLNPRM prm;
229
230	/* Ok, we've entered here, thus we can't ignore cmd line parameters anymore */
231	m_fIgnoreCmdLineParameters = false;
232
233	prm.Key = rc;
234
235	switch (rc)
236	{
237	case 'l':
238	case 'u':
239	case 'g':
240	{
241	char buf[17];
242	RTStrPrintf(buf, 17, "%RTnaipv4", Val.IPv4Addr.u);
243	prm.strValue = buf;
244	CmdParameterll.push_back(prm);
245	}
246	break;
247
248	case 'b': // ignore
249	case 'D': // ignore
250	break;
251
252	default:
253	rc = RTGetOptPrintError(rc, &Val);
254	RTPrintf("Use --help for more information.\n");
255	return rc;
256	}
257
258	return VINF_SUCCESS;
259	}
260
261	int VBoxNetDhcp::init()
262	{
263	int rc = this->VBoxNetBaseService::init();
264	AssertRCReturn(rc, rc);
265
266	NetworkManager *netManager = NetworkManager::getNetworkManager();
267
268	netManager->setOurAddress(getIpv4Address());
269	netManager->setOurNetmask(getIpv4Netmask());
270	netManager->setOurMac(getMacAddress());
271	netManager->setService(this);
272
273	if (isMainNeeded())
274	rc = initWithMain();
275	else
276	rc = initNoMain();
277
278	AssertRCReturn(rc, rc);
279
280	return VINF_SUCCESS;
281	}
282
283	/**
284	* Runs the DHCP server.
285	*
286	* @returns exit code + error message to stderr on failure, won't return on
287	* success (you must kill this process).
288	*/
289	int VBoxNetDhcp::run(void)
290	{
291	doReceiveLoop();
292	return 0;
293	}
294
295
296	int VBoxNetDhcp::processUDP(void *pv, size_t cbPv)
297	{
298	PCRTNETBOOTP pDhcpMsg = (PCRTNETBOOTP)pv;
299	m_pCurMsg = pDhcpMsg;
300	m_cbCurMsg = cbPv;
301
302	uint8_t uMsgType;
303	if (RTNetIPv4IsDHCPValid(NULL /* why is this here? */, pDhcpMsg, cbPv, &uMsgType))
304	{
305	m_uCurMsgType = uMsgType;
306	handleDhcpMsg(uMsgType, pDhcpMsg, cbPv);
307	m_uCurMsgType = UINT8_MAX;
308	}
309	else
310	debugPrint(1, true, "VBoxNetDHCP: Skipping invalid DHCP packet.\n"); /** @todo handle pure bootp clients too? */
311
312	m_pCurMsg = NULL;
313	m_cbCurMsg = 0;
314
315	return VINF_SUCCESS;
316	}
317
318
319	/**
320	* Handles a DHCP message.
321	*
322	* @returns true if handled, false if not.
323	* @param uMsgType The message type.
324	* @param pDhcpMsg The DHCP message.
325	* @param cb The size of the DHCP message.
326	*/
327	bool VBoxNetDhcp::handleDhcpMsg(uint8_t uMsgType, PCRTNETBOOTP pDhcpMsg, size_t cb)
328	{
329	if (pDhcpMsg->bp_op == RTNETBOOTP_OP_REQUEST)
330	{
331	NetworkManager *networkManager = NetworkManager::getNetworkManager();
332
333	switch (uMsgType)
334	{
335	case RTNET_DHCP_MT_DISCOVER:
336	return networkManager->handleDhcpReqDiscover(pDhcpMsg, cb);
337
338	case RTNET_DHCP_MT_REQUEST:
339	return networkManager->handleDhcpReqRequest(pDhcpMsg, cb);
340
341	case RTNET_DHCP_MT_DECLINE:
342	return networkManager->handleDhcpReqDecline(pDhcpMsg, cb);
343
344	case RTNET_DHCP_MT_RELEASE:
345	return networkManager->handleDhcpReqRelease(pDhcpMsg, cb);
346
347	case RTNET_DHCP_MT_INFORM:
348	debugPrint(0, true, "Should we handle this?");
349	break;
350
351	default:
352	debugPrint(0, true, "Unexpected.");
353	break;
354	}
355	}
356	return false;
357	}
358
359	/**
360	* Print debug message depending on the m_cVerbosity level.
361	*
362	* @param iMinLevel The minimum m_cVerbosity level for this message.
363	* @param fMsg Whether to dump parts for the current DHCP message.
364	* @param pszFmt The message format string.
365	* @param va Optional arguments.
366	*/
367	void VBoxNetDhcp::debugPrintV(int iMinLevel, bool fMsg, const char *pszFmt, va_list va) const
368	{
369	if (iMinLevel <= m_cVerbosity)
370	{
371	va_list vaCopy; /* This dude is very special, thus the copy. */
372	va_copy(vaCopy, va);
373	RTStrmPrintf(g_pStdErr, "VBoxNetDHCP: %s: %N\n", iMinLevel >= 2 ? "debug" : "info", pszFmt, &vaCopy);
374	va_end(vaCopy);
375
376	if ( fMsg
377	&& m_cVerbosity >= 2
378	&& m_pCurMsg)
379	{
380	/* XXX: export this to debugPrinfDhcpMsg or variant and other method export
381	* to base class
382	*/
383	const char *pszMsg = m_uCurMsgType != UINT8_MAX ? debugDhcpName(m_uCurMsgType) : "";
384	RTStrmPrintf(g_pStdErr, "VBoxNetDHCP: debug: %8s chaddr=%.6Rhxs ciaddr=%d.%d.%d.%d yiaddr=%d.%d.%d.%d siaddr=%d.%d.%d.%d xid=%#x\n",
385	pszMsg,
386	&m_pCurMsg->bp_chaddr,
387	m_pCurMsg->bp_ciaddr.au8[0], m_pCurMsg->bp_ciaddr.au8[1], m_pCurMsg->bp_ciaddr.au8[2], m_pCurMsg->bp_ciaddr.au8[3],
388	m_pCurMsg->bp_yiaddr.au8[0], m_pCurMsg->bp_yiaddr.au8[1], m_pCurMsg->bp_yiaddr.au8[2], m_pCurMsg->bp_yiaddr.au8[3],
389	m_pCurMsg->bp_siaddr.au8[0], m_pCurMsg->bp_siaddr.au8[1], m_pCurMsg->bp_siaddr.au8[2], m_pCurMsg->bp_siaddr.au8[3],
390	m_pCurMsg->bp_xid);
391	}
392	}
393	}
394
395
396	/**
397	* Gets the name of given DHCP message type.
398	*
399	* @returns Readonly name.
400	* @param uMsgType The message number.
401	*/
402	/* static / const char VBoxNetDhcp::debugDhcpName(uint8_t uMsgType)
403	{
404	switch (uMsgType)
405	{
406	case 0: return "MT_00";
407	case RTNET_DHCP_MT_DISCOVER: return "DISCOVER";
408	case RTNET_DHCP_MT_OFFER: return "OFFER";
409	case RTNET_DHCP_MT_REQUEST: return "REQUEST";
410	case RTNET_DHCP_MT_DECLINE: return "DECLINE";
411	case RTNET_DHCP_MT_ACK: return "ACK";
412	case RTNET_DHCP_MT_NAC: return "NAC";
413	case RTNET_DHCP_MT_RELEASE: return "RELEASE";
414	case RTNET_DHCP_MT_INFORM: return "INFORM";
415	case 9: return "MT_09";
416	case 10: return "MT_0a";
417	case 11: return "MT_0b";
418	case 12: return "MT_0c";
419	case 13: return "MT_0d";
420	case 14: return "MT_0e";
421	case 15: return "MT_0f";
422	case 16: return "MT_10";
423	case 17: return "MT_11";
424	case 18: return "MT_12";
425	case 19: return "MT_13";
426	case UINT8_MAX: return "MT_ff";
427	default: return "UNKNOWN";
428	}
429	}
430
431
432	int VBoxNetDhcp::initNoMain()
433	{
434	CmdParameterIterator it;
435
436	RTNETADDRIPV4 address = getIpv4Address();
437	RTNETADDRIPV4 netmask = getIpv4Netmask();
438	RTNETADDRIPV4 networkId;
439	networkId.u = address.u & netmask.u;
440
441	RTNETADDRIPV4 UpperAddress;
442	RTNETADDRIPV4 LowerAddress = networkId;
443	UpperAddress.u = RT_H2N_U32(RT_N2H_U32(LowerAddress.u) \| RT_N2H_U32(netmask.u));
444
445	for (it = CmdParameterll.begin(); it != CmdParameterll.end(); ++it)
446	{
447	switch(it->Key)
448	{
449	case 'l':
450	RTNetStrToIPv4Addr(it->strValue.c_str(), &LowerAddress);
451	break;
452
453	case 'u':
454	RTNetStrToIPv4Addr(it->strValue.c_str(), &UpperAddress);
455	break;
456	case 'b':
457	break;
458
459	}
460	}
461
462	ConfigurationManager *confManager = ConfigurationManager::getConfigurationManager();
463	AssertPtrReturn(confManager, VERR_INTERNAL_ERROR);
464	confManager->addNetwork(unconst(g_RootConfig),
465	networkId,
466	netmask,
467	LowerAddress,
468	UpperAddress);
469
470	return VINF_SUCCESS;
471	}
472
473
474	int VBoxNetDhcp::initWithMain()
475	{
476	/* ok, here we should initiate instance of dhcp server
477	* and listener for Dhcp configuration events
478	*/
479	AssertRCReturn(virtualbox.isNull(), VERR_INTERNAL_ERROR);
480	std::string networkName = getNetwork();
481
482	int rc = findDhcpServer(virtualbox, networkName, m_DhcpServer);
483	AssertRCReturn(rc, rc);
484
485	rc = findNatNetwork(virtualbox, networkName, m_NATNetwork);
486	AssertRCReturn(rc, rc);
487
488	BOOL fNeedDhcpServer = isDhcpRequired(m_NATNetwork);
489	if (!fNeedDhcpServer)
490	return VERR_CANCELLED;
491
492	RTNETADDRIPV4 gateway;
493	com::Bstr strGateway;
494	HRESULT hrc = m_NATNetwork->COMGETTER(Gateway)(strGateway.asOutParam());
495	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
496	RTNetStrToIPv4Addr(com::Utf8Str(strGateway).c_str(), &gateway);
497
498	ConfigurationManager *confManager = ConfigurationManager::getConfigurationManager();
499	AssertPtrReturn(confManager, VERR_INTERNAL_ERROR);
500	confManager->addToAddressList(RTNET_DHCP_OPT_ROUTERS, gateway);
501
502	rc = fetchAndUpdateDnsInfo();
503	AssertMsgRCReturn(rc, ("Wasn't able to fetch Dns info"), rc);
504
505	com::Bstr strUpperIp, strLowerIp;
506
507	RTNETADDRIPV4 LowerAddress;
508	RTNETADDRIPV4 UpperAddress;
509
510	hrc = m_DhcpServer->COMGETTER(UpperIP)(strUpperIp.asOutParam());
511	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
512	RTNetStrToIPv4Addr(com::Utf8Str(strUpperIp).c_str(), &UpperAddress);
513
514
515	hrc = m_DhcpServer->COMGETTER(LowerIP)(strLowerIp.asOutParam());
516	AssertComRCReturn(hrc, VERR_INTERNAL_ERROR);
517	RTNetStrToIPv4Addr(com::Utf8Str(strLowerIp).c_str(), &LowerAddress);
518
519	RTNETADDRIPV4 address = getIpv4Address();
520	RTNETADDRIPV4 netmask = getIpv4Netmask();
521
522	RTNETADDRIPV4 networkId = networkid(address, netmask);
523	std::string name = std::string("default");
524
525	confManager->addNetwork(unconst(g_RootConfig),
526	networkId,
527	netmask,
528	LowerAddress,
529	UpperAddress);
530
531	com::Bstr bstr;
532	hrc = virtualbox->COMGETTER(HomeFolder)(bstr.asOutParam());
533	std::string strXmlLeaseFile(com::Utf8StrFmt("%ls%c%s.leases",
534	bstr.raw(), RTPATH_DELIMITER, networkName.c_str()).c_str());
535	confManager->loadFromFile(strXmlLeaseFile);
536
537	return VINF_SUCCESS;
538	}
539
540
541	int VBoxNetDhcp::fetchAndUpdateDnsInfo()
542	{
543	ComHostPtr host;
544	if (SUCCEEDED(virtualbox->COMGETTER(Host)(host.asOutParam())))
545	{
546	AddressToOffsetMapping mapIp4Addr2Off;
547	int rc = localMappings(m_NATNetwork, mapIp4Addr2Off);
548	/* XXX: here could be several cases: 1. COM error, 2. not found (empty) 3. ? */
549	AssertMsgRCReturn(rc, ("Can't fetch local mappings"), rc);
550
551	RTNETADDRIPV4 address = getIpv4Address();
552	RTNETADDRIPV4 netmask = getIpv4Netmask();
553
554	AddressList nameservers;
555	rc = hostDnsServers(host, networkid(address, netmask), mapIp4Addr2Off, nameservers);
556	AssertMsgRCReturn(rc, ("Debug me!!!"), rc);
557	/* XXX: Search strings */
558
559	std::string domain;
560	rc = hostDnsDomain(host, domain);
561	AssertMsgRCReturn(rc, ("Debug me!!"), rc);
562
563	{
564	ConfigurationManager *confManager = ConfigurationManager::getConfigurationManager();
565	confManager->flushAddressList(RTNET_DHCP_OPT_DNS);
566
567	for (AddressList::iterator it = nameservers.begin(); it != nameservers.end(); ++it)
568	confManager->addToAddressList(RTNET_DHCP_OPT_DNS, *it);
569
570	confManager->setString(RTNET_DHCP_OPT_DOMAIN_NAME, domain);
571	}
572	}
573
574	return VINF_SUCCESS;
575	}
576
577	/**
578	* Entry point.
579	*/
580	extern "C" DECLEXPORT(int) TrustedMain(int argc, char **argv)
581	{
582	/*
583	* Instantiate the DHCP server and hand it the options.
584	*/
585
586	VBoxNetDhcp *pDhcp = new VBoxNetDhcp();
587	if (!pDhcp)
588	{
589	RTStrmPrintf(g_pStdErr, "VBoxNetDHCP: new VBoxNetDhcp failed!\n");
590	return 1;
591	}
592	int rc = pDhcp->parseArgs(argc - 1, argv + 1);
593	if (rc)
594	return rc;
595
596	pDhcp->init();
597
598	/*
599	* Try connect the server to the network.
600	*/
601	rc = pDhcp->tryGoOnline();
602	if (RT_FAILURE(rc))
603	{
604	delete pDhcp;
605	return 1;
606	}
607
608	/*
609	* Process requests.
610	*/
611	g_pDhcp = pDhcp;
612	rc = pDhcp->run();
613	g_pDhcp = NULL;
614	delete pDhcp;
615
616	return 0;
617	}
618
619
620	#ifndef VBOX_WITH_HARDENING
621
622	int main(int argc, char **argv)
623	{
624	int rc = RTR3InitExe(argc, &argv, RTR3INIT_FLAGS_SUPLIB);
625	if (RT_FAILURE(rc))
626	return RTMsgInitFailure(rc);
627
628	return TrustedMain(argc, argv);
629	}
630
631	# ifdef RT_OS_WINDOWS
632
633	static LRESULT CALLBACK WindowProc(HWND hwnd,
634	UINT uMsg,
635	WPARAM wParam,
636	LPARAM lParam
637	)
638	{
639	if(uMsg == WM_DESTROY)
640	{
641	PostQuitMessage(0);
642	return 0;
643	}
644	return DefWindowProc (hwnd, uMsg, wParam, lParam);
645	}
646
647	static LPCWSTR g_WndClassName = L"VBoxNetDHCPClass";
648
649	static DWORD WINAPI MsgThreadProc(__in LPVOID lpParameter)
650	{
651	HWND hwnd = 0;
652	HINSTANCE hInstance = (HINSTANCE)GetModuleHandle (NULL);
653	bool bExit = false;
654
655	/* Register the Window Class. */
656	WNDCLASS wc;
657	wc.style = 0;
658	wc.lpfnWndProc = WindowProc;
659	wc.cbClsExtra = 0;
660	wc.cbWndExtra = sizeof(void *);
661	wc.hInstance = hInstance;
662	wc.hIcon = NULL;
663	wc.hCursor = NULL;
664	wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND + 1);
665	wc.lpszMenuName = NULL;
666	wc.lpszClassName = g_WndClassName;
667
668	ATOM atomWindowClass = RegisterClass(&wc);
669
670	if (atomWindowClass != 0)
671	{
672	/* Create the window. */
673	hwnd = CreateWindowEx (WS_EX_TOOLWINDOW \| WS_EX_TRANSPARENT \| WS_EX_TOPMOST,
674	g_WndClassName, g_WndClassName,
675	WS_POPUPWINDOW,
676	-200, -200, 100, 100, NULL, NULL, hInstance, NULL);
677
678	if (hwnd)
679	{
680	SetWindowPos(hwnd, HWND_TOPMOST, -200, -200, 0, 0,
681	SWP_NOACTIVATE \| SWP_HIDEWINDOW \| SWP_NOCOPYBITS \| SWP_NOREDRAW \| SWP_NOSIZE);
682
683	MSG msg;
684	while (GetMessage(&msg, NULL, 0, 0))
685	{
686	TranslateMessage(&msg);
687	DispatchMessage(&msg);
688	}
689
690	DestroyWindow (hwnd);
691
692	bExit = true;
693	}
694
695	UnregisterClass (g_WndClassName, hInstance);
696	}
697
698	if(bExit)
699	{
700	/* no need any accuracy here, in anyway the DHCP server usually gets terminated with TerminateProcess */
701	exit(0);
702	}
703
704	return 0;
705	}
706
707
708	/** (We don't want a console usually.) */
709	int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
710	{
711	NOREF(hInstance); NOREF(hPrevInstance); NOREF(lpCmdLine); NOREF(nCmdShow);
712
713	HANDLE hThread = CreateThread(
714	NULL, /__in_opt LPSECURITY_ATTRIBUTES lpThreadAttributes, /
715	0, /__in SIZE_T dwStackSize, /
716	MsgThreadProc, /__in LPTHREAD_START_ROUTINE lpStartAddress,/
717	NULL, /__in_opt LPVOID lpParameter,/
718	0, /__in DWORD dwCreationFlags,/
719	NULL /__out_opt LPDWORD lpThreadId/
720	);
721
722	if(hThread != NULL)
723	CloseHandle(hThread);
724
725	return main(__argc, __argv);
726	}
727	# endif /* RT_OS_WINDOWS */
728
729	#endif /* !VBOX_WITH_HARDENING */
730

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source: vbox/trunk/src/VBox/NetworkServices/DHCP/VBoxNetDHCP.cpp@ 49826

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