DHCPServerImpl.cpp@ 75617

Last change on this file since 75617 was 75617, checked in by vboxsync, 6 years ago
Rolled back r126789.
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1	/* $Id: DHCPServerImpl.cpp 75617 2018-11-20 11:59:31Z vboxsync $ */
2
3	/** @file
4	*
5	* VirtualBox COM class implementation
6	*/
7
8	/*
9	* Copyright (C) 2006-2017 Oracle Corporation
10	*
11	* This file is part of VirtualBox Open Source Edition (OSE), as
12	* available from http://www.virtualbox.org. This file is free software;
13	* you can redistribute it and/or modify it under the terms of the GNU
14	* General Public License (GPL) as published by the Free Software
15	* Foundation, in version 2 as it comes in the "COPYING" file of the
16	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18	*/
19
20	#include <string>
21	#include "NetworkServiceRunner.h"
22	#include "DHCPServerImpl.h"
23	#include "AutoCaller.h"
24	#include "Logging.h"
25
26	#include <iprt/asm.h>
27	#include <iprt/net.h>
28	#include <iprt/cpp/utils.h>
29
30	#include <VBox/com/array.h>
31	#include <VBox/settings.h>
32
33	#include "VirtualBoxImpl.h"
34
35	// constructor / destructor
36	/////////////////////////////////////////////////////////////////////////////
37	const std::string DHCPServerRunner::kDsrKeyGateway = "--gateway";
38	const std::string DHCPServerRunner::kDsrKeyLowerIp = "--lower-ip";
39	const std::string DHCPServerRunner::kDsrKeyUpperIp = "--upper-ip";
40
41
42	struct DHCPServer::Data
43	{
44	Data()
45	: enabled(FALSE)
46	, router(false)
47	{}
48
49	Utf8Str IPAddress;
50	Utf8Str lowerIP;
51	Utf8Str upperIP;
52
53	BOOL enabled;
54	bool router;
55	DHCPServerRunner dhcp;
56
57	settings::DhcpOptionMap GlobalDhcpOptions;
58	settings::VmSlot2OptionsMap VmSlot2Options;
59	};
60
61
62	DHCPServer::DHCPServer()
63	: m(NULL)
64	, mVirtualBox(NULL)
65	{
66	m = new DHCPServer::Data();
67	}
68
69
70	DHCPServer::~DHCPServer()
71	{
72	if (m)
73	{
74	delete m;
75	m = NULL;
76	}
77	}
78
79
80	HRESULT DHCPServer::FinalConstruct()
81	{
82	return BaseFinalConstruct();
83	}
84
85
86	void DHCPServer::FinalRelease()
87	{
88	uninit ();
89
90	BaseFinalRelease();
91	}
92
93
94	void DHCPServer::uninit()
95	{
96	/* Enclose the state transition Ready->InUninit->NotReady */
97	AutoUninitSpan autoUninitSpan(this);
98	if (autoUninitSpan.uninitDone())
99	return;
100
101	unconst(mVirtualBox) = NULL;
102	}
103
104
105	HRESULT DHCPServer::init(VirtualBox *aVirtualBox, const Utf8Str &aName)
106	{
107	AssertReturn(!aName.isEmpty(), E_INVALIDARG);
108
109	AutoInitSpan autoInitSpan(this);
110	AssertReturn(autoInitSpan.isOk(), E_FAIL);
111
112	/* share VirtualBox weakly (parent remains NULL so far) */
113	unconst(mVirtualBox) = aVirtualBox;
114
115	unconst(mName) = aName;
116	m->IPAddress = "0.0.0.0";
117	m->GlobalDhcpOptions[DhcpOpt_SubnetMask] = settings::DhcpOptValue("0.0.0.0");
118	m->enabled = FALSE;
119
120	m->lowerIP = "0.0.0.0";
121	m->upperIP = "0.0.0.0";
122
123	/* Confirm a successful initialization */
124	autoInitSpan.setSucceeded();
125
126	return S_OK;
127	}
128
129
130	HRESULT DHCPServer::init(VirtualBox *aVirtualBox,
131	const settings::DHCPServer &data)
132	{
133	/* Enclose the state transition NotReady->InInit->Ready */
134	AutoInitSpan autoInitSpan(this);
135	AssertReturn(autoInitSpan.isOk(), E_FAIL);
136
137	/* share VirtualBox weakly (parent remains NULL so far) */
138	unconst(mVirtualBox) = aVirtualBox;
139
140	unconst(mName) = data.strNetworkName;
141	m->IPAddress = data.strIPAddress;
142	m->enabled = data.fEnabled;
143	m->lowerIP = data.strIPLower;
144	m->upperIP = data.strIPUpper;
145
146	m->GlobalDhcpOptions.clear();
147	m->GlobalDhcpOptions.insert(data.GlobalDhcpOptions.begin(),
148	data.GlobalDhcpOptions.end());
149
150	m->VmSlot2Options.clear();
151	m->VmSlot2Options.insert(data.VmSlot2OptionsM.begin(),
152	data.VmSlot2OptionsM.end());
153
154	autoInitSpan.setSucceeded();
155
156	return S_OK;
157	}
158
159
160	HRESULT DHCPServer::i_saveSettings(settings::DHCPServer &data)
161	{
162	AutoCaller autoCaller(this);
163	if (FAILED(autoCaller.rc())) return autoCaller.rc();
164
165	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
166
167	data.strNetworkName = mName;
168	data.strIPAddress = m->IPAddress;
169
170	data.fEnabled = !!m->enabled;
171	data.strIPLower = m->lowerIP;
172	data.strIPUpper = m->upperIP;
173
174	data.GlobalDhcpOptions.clear();
175	data.GlobalDhcpOptions.insert(m->GlobalDhcpOptions.begin(),
176	m->GlobalDhcpOptions.end());
177
178	data.VmSlot2OptionsM.clear();
179	data.VmSlot2OptionsM.insert(m->VmSlot2Options.begin(),
180	m->VmSlot2Options.end());
181
182	return S_OK;
183	}
184
185
186	HRESULT DHCPServer::getNetworkName(com::Utf8Str &aName)
187	{
188	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
189
190	aName = mName;
191	return S_OK;
192	}
193
194
195	HRESULT DHCPServer::getEnabled(BOOL *aEnabled)
196	{
197	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
198
199	*aEnabled = m->enabled;
200	return S_OK;
201	}
202
203
204	HRESULT DHCPServer::setEnabled(BOOL aEnabled)
205	{
206	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
207	m->enabled = aEnabled;
208
209	// save the global settings; for that we should hold only the VirtualBox lock
210	alock.release();
211	AutoWriteLock vboxLock(mVirtualBox COMMA_LOCKVAL_SRC_POS);
212	HRESULT rc = mVirtualBox->i_saveSettings();
213
214	return rc;
215	}
216
217
218	HRESULT DHCPServer::getIPAddress(com::Utf8Str &aIPAddress)
219	{
220	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
221
222	aIPAddress = Utf8Str(m->IPAddress);
223	return S_OK;
224	}
225
226
227	HRESULT DHCPServer::getNetworkMask(com::Utf8Str &aNetworkMask)
228	{
229	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
230
231	aNetworkMask = m->GlobalDhcpOptions[DhcpOpt_SubnetMask].text;
232	return S_OK;
233	}
234
235
236	HRESULT DHCPServer::getLowerIP(com::Utf8Str &aIPAddress)
237	{
238	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
239
240	aIPAddress = Utf8Str(m->lowerIP);
241	return S_OK;
242	}
243
244
245	HRESULT DHCPServer::getUpperIP(com::Utf8Str &aIPAddress)
246	{
247	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
248
249	aIPAddress = Utf8Str(m->upperIP);
250	return S_OK;
251	}
252
253
254	HRESULT DHCPServer::setConfiguration(const com::Utf8Str &aIPAddress,
255	const com::Utf8Str &aNetworkMask,
256	const com::Utf8Str &aLowerIP,
257	const com::Utf8Str &aUpperIP)
258	{
259	RTNETADDRIPV4 IPAddress, NetworkMask, LowerIP, UpperIP;
260
261	int vrc = RTNetStrToIPv4Addr(aIPAddress.c_str(), &IPAddress);
262	if (RT_FAILURE(vrc))
263	return mVirtualBox->setErrorBoth(E_INVALIDARG, vrc, "Invalid server address");
264
265	vrc = RTNetStrToIPv4Addr(aNetworkMask.c_str(), &NetworkMask);
266	if (RT_FAILURE(vrc))
267	return mVirtualBox->setErrorBoth(E_INVALIDARG, vrc, "Invalid netmask");
268
269	vrc = RTNetStrToIPv4Addr(aLowerIP.c_str(), &LowerIP);
270	if (RT_FAILURE(vrc))
271	return mVirtualBox->setErrorBoth(E_INVALIDARG, vrc, "Invalid range lower address");
272
273	vrc = RTNetStrToIPv4Addr(aUpperIP.c_str(), &UpperIP);
274	if (RT_FAILURE(vrc))
275	return mVirtualBox->setErrorBoth(E_INVALIDARG, vrc, "Invalid range upper address");
276
277	/*
278	* Insist on continuous mask. May be also accept prefix length
279	* here or address/prefix for aIPAddress?
280	*/
281	vrc = RTNetMaskToPrefixIPv4(&NetworkMask, NULL);
282	if (RT_FAILURE(vrc))
283	return mVirtualBox->setErrorBoth(E_INVALIDARG, vrc, "Invalid netmask");
284
285	/* It's more convenient to convert to host order once */
286	IPAddress.u = RT_N2H_U32(IPAddress.u);
287	NetworkMask.u = RT_N2H_U32(NetworkMask.u);
288	LowerIP.u = RT_N2H_U32(LowerIP.u);
289	UpperIP.u = RT_N2H_U32(UpperIP.u);
290
291	/*
292	* Addresses must be unicast and from the same network
293	*/
294	if ( (IPAddress.u & UINT32_C(0xe0000000)) == UINT32_C(0xe0000000)
295	\|\| (IPAddress.u & ~NetworkMask.u) == 0
296	\|\| ((IPAddress.u & ~NetworkMask.u) \| NetworkMask.u) == UINT32_C(0xffffffff))
297	return mVirtualBox->setError(E_INVALIDARG, "Invalid server address");
298
299	if ( (LowerIP.u & UINT32_C(0xe0000000)) == UINT32_C(0xe0000000)
300	\|\| (LowerIP.u & NetworkMask.u) != (IPAddress.u &NetworkMask.u)
301	\|\| (LowerIP.u & ~NetworkMask.u) == 0
302	\|\| ((LowerIP.u & ~NetworkMask.u) \| NetworkMask.u) == UINT32_C(0xffffffff))
303	return mVirtualBox->setError(E_INVALIDARG, "Invalid range lower address");
304
305	if ( (UpperIP.u & UINT32_C(0xe0000000)) == UINT32_C(0xe0000000)
306	\|\| (UpperIP.u & NetworkMask.u) != (IPAddress.u &NetworkMask.u)
307	\|\| (UpperIP.u & ~NetworkMask.u) == 0
308	\|\| ((UpperIP.u & ~NetworkMask.u) \| NetworkMask.u) == UINT32_C(0xffffffff))
309	return mVirtualBox->setError(E_INVALIDARG, "Invalid range upper address");
310
311	/* The range should be valid ... */
312	if (LowerIP.u > UpperIP.u)
313	return mVirtualBox->setError(E_INVALIDARG, "Invalid range bounds");
314
315	/* ... and shouldn't contain the server's address */
316	if (LowerIP.u <= IPAddress.u && IPAddress.u <= UpperIP.u)
317	return mVirtualBox->setError(E_INVALIDARG, "Server address within range bounds");
318
319	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
320	m->IPAddress = aIPAddress;
321	m->GlobalDhcpOptions[DhcpOpt_SubnetMask] = aNetworkMask;
322
323	m->lowerIP = aLowerIP;
324	m->upperIP = aUpperIP;
325
326	// save the global settings; for that we should hold only the VirtualBox lock
327	alock.release();
328	AutoWriteLock vboxLock(mVirtualBox COMMA_LOCKVAL_SRC_POS);
329	return mVirtualBox->i_saveSettings();
330	}
331
332
333	HRESULT DHCPServer::encodeOption(com::Utf8Str &aEncoded,
334	uint32_t aOptCode,
335	const settings::DhcpOptValue &aOptValue)
336	{
337	switch (aOptValue.encoding)
338	{
339	case DhcpOptEncoding_Legacy:
340	{
341	/*
342	* This is original encoding which assumed that for each
343	* option we know its format and so we know how option
344	* "value" text is to be interpreted.
345	*
346	* "2:10800" # integer 32
347	* "6:1.2.3.4 8.8.8.8" # array of ip-address
348	*/
349	aEncoded = Utf8StrFmt("%d:%s", aOptCode, aOptValue.text.c_str());
350	break;
351	}
352
353	case DhcpOptEncoding_Hex:
354	{
355	/*
356	* This is a bypass for any option - preformatted value as
357	* hex string with no semantic involved in formatting the
358	* value for the DHCP reply.
359	*
360	* 234=68:65:6c:6c:6f:2c:20:77:6f:72:6c:64
361	*/
362	aEncoded = Utf8StrFmt("%d=%s", aOptCode, aOptValue.text.c_str());
363	break;
364	}
365
366	default:
367	{
368	/*
369	* Try to be forward compatible.
370	*
371	* "254@42=i hope you know what this means"
372	*/
373	aEncoded = Utf8StrFmt("%d@%d=%s", aOptCode, (int)aOptValue.encoding,
374	aOptValue.text.c_str());
375	break;
376	}
377	}
378
379	return S_OK;
380	}
381
382
383	int DHCPServer::addOption(settings::DhcpOptionMap &aMap,
384	DhcpOpt_T aOption, const com::Utf8Str &aValue)
385	{
386	settings::DhcpOptValue OptValue;
387
388	if (aOption != 0)
389	{
390	OptValue = settings::DhcpOptValue(aValue, DhcpOptEncoding_Legacy);
391	}
392	/*
393	* This is a kludge to sneak in option encoding information
394	* through existing API. We use option 0 and supply the real
395	* option/value in the same format that encodeOption() above
396	* produces for getter methods.
397	*/
398	else
399	{
400	uint8_t u8Code;
401	char *pszNext;
402	int vrc = RTStrToUInt8Ex(aValue.c_str(), &pszNext, 10, &u8Code);
403	if (!RT_SUCCESS(vrc))
404	return VERR_PARSE_ERROR;
405
406	uint32_t u32Enc;
407	switch (*pszNext)
408	{
409	case ':': /* support legacy format too */
410	{
411	u32Enc = DhcpOptEncoding_Legacy;
412	break;
413	}
414
415	case '=':
416	{
417	u32Enc = DhcpOptEncoding_Hex;
418	break;
419	}
420
421	case '@':
422	{
423	vrc = RTStrToUInt32Ex(pszNext + 1, &pszNext, 10, &u32Enc);
424	if (!RT_SUCCESS(vrc))
425	return VERR_PARSE_ERROR;
426	if (*pszNext != '=')
427	return VERR_PARSE_ERROR;
428	break;
429	}
430
431	default:
432	return VERR_PARSE_ERROR;
433	}
434
435	aOption = (DhcpOpt_T)u8Code;
436	OptValue = settings::DhcpOptValue(pszNext + 1, (DhcpOptEncoding_T)u32Enc);
437	}
438
439	aMap[aOption] = OptValue;
440	return VINF_SUCCESS;
441	}
442
443
444	HRESULT DHCPServer::addGlobalOption(DhcpOpt_T aOption, const com::Utf8Str &aValue)
445	{
446	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
447
448	int rc = addOption(m->GlobalDhcpOptions, aOption, aValue);
449	if (!RT_SUCCESS(rc))
450	return E_INVALIDARG;
451
452	/* Indirect way to understand that we're on NAT network */
453	if (aOption == DhcpOpt_Router)
454	{
455	m->dhcp.setOption(NetworkServiceRunner::kNsrKeyNeedMain, "on");
456	m->router = true;
457	}
458
459	alock.release();
460
461	AutoWriteLock vboxLock(mVirtualBox COMMA_LOCKVAL_SRC_POS);
462	return mVirtualBox->i_saveSettings();
463	}
464
465
466	HRESULT DHCPServer::getGlobalOptions(std::vector<com::Utf8Str> &aValues)
467	{
468	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
469	aValues.resize(m->GlobalDhcpOptions.size());
470	settings::DhcpOptionMap::const_iterator it;
471	size_t i = 0;
472	for (it = m->GlobalDhcpOptions.begin(); it != m->GlobalDhcpOptions.end(); ++it, ++i)
473	{
474	uint32_t OptCode = (*it).first;
475	const settings::DhcpOptValue &OptValue = (*it).second;
476
477	encodeOption(aValues[i], OptCode, OptValue);
478	}
479
480	return S_OK;
481	}
482
483	HRESULT DHCPServer::getVmConfigs(std::vector<com::Utf8Str> &aValues)
484	{
485	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
486	aValues.resize(m->VmSlot2Options.size());
487	settings::VmSlot2OptionsMap::const_iterator it;
488	size_t i = 0;
489	for (it = m->VmSlot2Options.begin(); it != m->VmSlot2Options.end(); ++it, ++i)
490	{
491	aValues[i] = Utf8StrFmt("[%s]:%d", it->first.VmName.c_str(), it->first.Slot);
492	}
493
494	return S_OK;
495	}
496
497
498	HRESULT DHCPServer::addVmSlotOption(const com::Utf8Str &aVmName,
499	LONG aSlot,
500	DhcpOpt_T aOption,
501	const com::Utf8Str &aValue)
502	{
503	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
504
505	settings::DhcpOptionMap &map = m->VmSlot2Options[settings::VmNameSlotKey(aVmName, aSlot)];
506	int rc = addOption(map, aOption, aValue);
507	if (!RT_SUCCESS(rc))
508	return E_INVALIDARG;
509
510	alock.release();
511
512	AutoWriteLock vboxLock(mVirtualBox COMMA_LOCKVAL_SRC_POS);
513	return mVirtualBox->i_saveSettings();
514	}
515
516
517	HRESULT DHCPServer::removeVmSlotOptions(const com::Utf8Str &aVmName, LONG aSlot)
518	{
519	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
520	settings::DhcpOptionMap &map = i_findOptMapByVmNameSlot(aVmName, aSlot);
521	map.clear();
522
523	alock.release();
524
525	AutoWriteLock vboxLock(mVirtualBox COMMA_LOCKVAL_SRC_POS);
526	return mVirtualBox->i_saveSettings();
527	}
528
529	/**
530	* this is mapping (vm, slot)
531	*/
532	HRESULT DHCPServer::getVmSlotOptions(const com::Utf8Str &aVmName,
533	LONG aSlot,
534	std::vector<com::Utf8Str> &aValues)
535	{
536
537	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
538	settings::DhcpOptionMap &map = i_findOptMapByVmNameSlot(aVmName, aSlot);
539	aValues.resize(map.size());
540	size_t i = 0;
541	settings::DhcpOptionMap::const_iterator it;
542	for (it = map.begin(); it != map.end(); ++it, ++i)
543	{
544	uint32_t OptCode = (*it).first;
545	const settings::DhcpOptValue &OptValue = (*it).second;
546
547	encodeOption(aValues[i], OptCode, OptValue);
548	}
549
550	return S_OK;
551	}
552
553
554	HRESULT DHCPServer::getMacOptions(const com::Utf8Str &aMAC, std::vector<com::Utf8Str> &aOption)
555	{
556	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
557	HRESULT hrc = S_OK;
558	ComPtr<IMachine> machine;
559	ComPtr<INetworkAdapter> nic;
560	settings::VmSlot2OptionsIterator it;
561	for(it = m->VmSlot2Options.begin(); it != m->VmSlot2Options.end(); ++it)
562	{
563	alock.release();
564	hrc = mVirtualBox->FindMachine(Bstr(it->first.VmName).raw(), machine.asOutParam());
565	alock.acquire();
566
567	if (FAILED(hrc))
568	continue;
569
570	alock.release();
571	hrc = machine->GetNetworkAdapter(it->first.Slot, nic.asOutParam());
572	alock.acquire();
573
574	if (FAILED(hrc))
575	continue;
576
577	com::Bstr mac;
578
579	alock.release();
580	hrc = nic->COMGETTER(MACAddress)(mac.asOutParam());
581	alock.acquire();
582
583	if (FAILED(hrc)) /* no MAC address ??? */
584	break;
585	if (!RTStrICmp(com::Utf8Str(mac).c_str(), aMAC.c_str()))
586	return getVmSlotOptions(it->first.VmName,
587	it->first.Slot,
588	aOption);
589	} /* end of for */
590
591	return hrc;
592	}
593
594	HRESULT DHCPServer::getEventSource(ComPtr<IEventSource> &aEventSource)
595	{
596	NOREF(aEventSource);
597	ReturnComNotImplemented();
598	}
599
600
601	HRESULT DHCPServer::start(const com::Utf8Str &aNetworkName,
602	const com::Utf8Str &aTrunkName,
603	const com::Utf8Str &aTrunkType)
604	{
605	/* Silently ignore attempts to run disabled servers. */
606	if (!m->enabled)
607	return S_OK;
608
609	/* Commmon Network Settings */
610	m->dhcp.setOption(NetworkServiceRunner::kNsrKeyNetwork, aNetworkName.c_str());
611
612	if (!aTrunkName.isEmpty())
613	m->dhcp.setOption(NetworkServiceRunner::kNsrTrunkName, aTrunkName.c_str());
614
615	m->dhcp.setOption(NetworkServiceRunner::kNsrKeyTrunkType, aTrunkType.c_str());
616
617	/* XXX: should this MAC default initialization moved to NetworkServiceRunner? */
618	char strMAC[32];
619	Guid guid;
620	guid.create();
621	RTStrPrintf (strMAC, sizeof(strMAC), "08:00:27:%02X:%02X:%02X",
622	guid.raw()->au8[0],
623	guid.raw()->au8[1],
624	guid.raw()->au8[2]);
625	m->dhcp.setOption(NetworkServiceRunner::kNsrMacAddress, strMAC);
626	m->dhcp.setOption(NetworkServiceRunner::kNsrIpAddress, Utf8Str(m->IPAddress).c_str());
627	m->dhcp.setOption(NetworkServiceRunner::kNsrIpNetmask, Utf8Str(m->GlobalDhcpOptions[DhcpOpt_SubnetMask].text).c_str());
628	m->dhcp.setOption(DHCPServerRunner::kDsrKeyLowerIp, Utf8Str(m->lowerIP).c_str());
629	m->dhcp.setOption(DHCPServerRunner::kDsrKeyUpperIp, Utf8Str(m->upperIP).c_str());
630
631	/* XXX: This parameters Dhcp Server will fetch via API */
632	return RT_FAILURE(m->dhcp.start(!m->router /* KillProcOnExit */)) ? E_FAIL : S_OK;
633	//m->dhcp.detachFromServer(); /* need to do this to avoid server shutdown on runner destruction */
634	}
635
636
637	HRESULT DHCPServer::stop (void)
638	{
639	return RT_FAILURE(m->dhcp.stop()) ? E_FAIL : S_OK;
640	}
641
642
643	settings::DhcpOptionMap &DHCPServer::i_findOptMapByVmNameSlot(const com::Utf8Str &aVmName,
644	LONG aSlot)
645	{
646	return m->VmSlot2Options[settings::VmNameSlotKey(aVmName, aSlot)];
647	}

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source: vbox/trunk/src/VBox/Main/src-server/DHCPServerImpl.cpp@ 75617

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