rest-binary.cpp@ 98859

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1	/* $Id: rest-binary.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* IPRT - C++ REST, RTCRestBinary and Descendants.
4	*/
5
6	/*
7	* Copyright (C) 2018-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* The contents of this file may alternatively be used under the terms
26	* of the Common Development and Distribution License Version 1.0
27	* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28	* in the VirtualBox distribution, in which case the provisions of the
29	* CDDL are applicable instead of those of the GPL.
30	*
31	* You may elect to license modified versions of this file under the
32	* terms and conditions of either the GPL or the CDDL or both.
33	*
34	* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35	*/
36
37
38	/*********************************************************************************************************************************
39	* Header Files *
40	*********************************************************************************************************************************/
41	#define LOG_GROUP RTLOGGROUP_REST
42	#include <iprt/cpp/restbase.h>
43	#include <iprt/cpp/restclient.h>
44
45	#include <iprt/assert.h>
46	#include <iprt/errcore.h>
47	#include <iprt/cpp/restoutput.h>
48
49
50	/*********************************************************************************************************************************
51	* Defined Constants And Macros *
52	*********************************************************************************************************************************/
53	/** The default maximum download size. */
54	#if ARCH_BITS == 32
55	# define RTCREST_MAX_DOWNLOAD_SIZE_DEFAULT _32M
56	#else
57	# define RTCREST_MAX_DOWNLOAD_SIZE_DEFAULT _128M
58	#endif
59
60
61
62	/*********************************************************************************************************************************
63	* RTCRestBinary Implementation. *
64	*********************************************************************************************************************************/
65	/**
66	* Default constructor.
67	*/
68	RTCRestBinary::RTCRestBinary() RT_NOEXCEPT
69	: m_pbData(NULL)
70	, m_cbData(0)
71	, m_cbAllocated(0)
72	, m_fFreeable(true)
73	, m_fReadOnly(false)
74	{
75	}
76
77
78	/**
79	* Destructor.
80	*/
81	RTCRestBinary::~RTCRestBinary()
82	{
83	freeData();
84	}
85
86	/**
87	* Safe copy assignment method.
88	*/
89	int RTCRestBinary::assignCopy(RTCRestBinary const &a_rThat) RT_NOEXCEPT
90	{
91	freeData();
92	if (a_rThat.m_pbData)
93	{
94	m_pbData = (uint8_t *)RTMemDup(a_rThat.m_pbData, a_rThat.m_cbAllocated);
95	AssertReturn(m_pbData, VERR_NO_MEMORY);
96	m_cbData = a_rThat.m_cbData;
97	m_cbAllocated = a_rThat.m_cbAllocated;
98	m_fFreeable = true;
99	m_fReadOnly = false;
100	m_fNullIndicator = false;
101	}
102	else
103	m_fNullIndicator = a_rThat.m_fNullIndicator;
104	return VINF_SUCCESS;
105	}
106
107
108	/**
109	* Safe buffer copy method.
110	*/
111	int RTCRestBinary::assignCopy(void const *a_pvData, size_t a_cbData) RT_NOEXCEPT
112	{
113	if ( m_pbData == NULL
114	\|\| m_fReadOnly
115	\|\| a_cbData > m_cbAllocated)
116	{
117	freeData();
118	m_pbData = (uint8_t *)RTMemDup(a_pvData, a_cbData);
119	AssertReturn(m_pbData, VERR_NO_MEMORY);
120	m_cbData = a_cbData;
121	m_cbAllocated = a_cbData;
122	m_fFreeable = true;
123	m_fReadOnly = false;
124	}
125	else
126	{
127	m_cbData = a_cbData;
128	memcpy(m_pbData, a_pvData, a_cbData);
129	}
130	m_fNullIndicator = false;
131	return VINF_SUCCESS;
132	}
133
134
135	/**
136	* Use the specified data buffer directly.
137	*/
138	int RTCRestBinary::assignReadOnly(void const *a_pvData, size_t a_cbData) RT_NOEXCEPT
139	{
140	freeData();
141	if (a_pvData)
142	{
143	m_pbData = (uint8_t *)a_pvData;
144	m_cbData = a_cbData;
145	m_cbAllocated = 0;
146	m_fFreeable = false;
147	m_fReadOnly = true;
148	m_fNullIndicator = false;
149	}
150	return VINF_SUCCESS;
151	}
152
153
154	/**
155	* Use the specified data buffer directly.
156	*/
157	int RTCRestBinary::assignWriteable(void *a_pvBuf, size_t a_cbBuf) RT_NOEXCEPT
158	{
159	freeData();
160	if (a_pvBuf)
161	{
162	m_pbData = (uint8_t *)a_pvBuf;
163	m_cbData = a_cbBuf;
164	m_cbAllocated = a_cbBuf;
165	m_fFreeable = false;
166	m_fReadOnly = false;
167	m_fNullIndicator = false;
168	}
169	return VINF_SUCCESS;
170	}
171
172
173	/**
174	* Frees the data held by the object and resets it default state.
175	*/
176	void RTCRestBinary::freeData() RT_NOEXCEPT
177	{
178	if (m_fFreeable)
179	RTMemFree(m_pbData);
180	m_pbData = NULL;
181	m_cbData = 0;
182	m_cbAllocated = 0;
183	m_fFreeable = true;
184	m_fReadOnly = false;
185	}
186
187
188	/* Overridden methods: */
189
190	RTCRestObjectBase *RTCRestBinary::baseClone() const RT_NOEXCEPT
191	{
192	RTCRestBinary *pClone = new (std::nothrow) RTCRestBinary();
193	if (pClone)
194	{
195	int rc = pClone->assignCopy(*this);
196	if (RT_SUCCESS(rc))
197	return pClone;
198	delete pClone;
199	}
200	return NULL;
201	}
202
203
204	int RTCRestBinary::setNull(void) RT_NOEXCEPT
205	{
206	freeData();
207	m_fNullIndicator = true;
208	return VINF_SUCCESS;
209	}
210
211
212	int RTCRestBinary::resetToDefault(void) RT_NOEXCEPT
213	{
214	freeData();
215	return VINF_SUCCESS;
216	}
217
218
219	RTCRestOutputBase &RTCRestBinary::serializeAsJson(RTCRestOutputBase &a_rDst) const RT_NOEXCEPT
220	{
221	AssertMsgFailed(("We should never get here!\n"));
222	a_rDst.nullValue();
223	return a_rDst;
224	}
225
226
227	int RTCRestBinary::deserializeFromJson(RTCRestJsonCursor const &a_rCursor) RT_NOEXCEPT
228	{
229	return a_rCursor.m_pPrimary->addError(a_rCursor, VERR_NOT_SUPPORTED, "RTCRestBinary does not support deserialization!");
230	}
231
232
233	int RTCRestBinary::toString(RTCString a_pDst, uint32_t a_fFlags /= kCollectionFormat_Unspecified*/) const RT_NOEXCEPT
234	{
235	RT_NOREF(a_pDst, a_fFlags);
236	AssertFailedReturn(VERR_NOT_SUPPORTED);
237	}
238
239
240	int RTCRestBinary::fromString(RTCString const &a_rValue, const char a_pszName, PRTERRINFO a_pErrInfo/= NULL*/,
241	uint32_t a_fFlags /= kCollectionFormat_Unspecified/) RT_NOEXCEPT
242	{
243	RT_NOREF(a_rValue, a_pszName, a_fFlags);
244	AssertFailedReturn(RTErrInfoSet(a_pErrInfo, VERR_NOT_SUPPORTED, "RTCRestBinary does not support fromString()!"));
245	}
246
247
248	RTCRestObjectBase::kTypeClass RTCRestBinary::typeClass(void) const RT_NOEXCEPT
249	{
250	return kTypeClass_Binary;
251	}
252
253
254	const char *RTCRestBinary::typeName(void) const RT_NOEXCEPT
255	{
256	return "RTCRestBinary";
257	}
258
259
260	/** Factory method. */
261	/static/ DECLCALLBACK(RTCRestObjectBase *) RTCRestBinary::createInstance(void) RT_NOEXCEPT
262	{
263	return new (std::nothrow) RTCRestBinary();
264	}
265
266
267	/**
268	* @copydoc RTCRestObjectBase::FNDESERIALIZEINSTANCEFROMJSON
269	*/
270	/static/ DECLCALLBACK(int)
271	RTCRestBinary::deserializeInstanceFromJson(RTCRestJsonCursor const &a_rCursor, RTCRestObjectBase **a_ppInstance) RT_NOEXCEPT
272	{
273	RTCRestObjectBase *pObj;
274	*a_ppInstance = pObj = createInstance();
275	if (pObj)
276	return pObj->deserializeFromJson(a_rCursor);
277	return a_rCursor.m_pPrimary->addError(a_rCursor, VERR_NO_MEMORY, "Out of memory");
278	}
279
280
281
282	/*********************************************************************************************************************************
283	* RTCRestBinaryParameter Implementation. *
284	*********************************************************************************************************************************/
285
286	/**
287	* Default constructor.
288	*/
289	RTCRestBinaryParameter::RTCRestBinaryParameter() RT_NOEXCEPT
290	: RTCRestBinary()
291	, m_cbContentLength(UINT64_MAX)
292	, m_strContentType()
293	, m_pfnProducer(NULL)
294	, m_pvCallbackData(NULL)
295	{
296	}
297
298
299	int RTCRestBinaryParameter::assignCopy(RTCRestBinaryParameter const &a_rThat) RT_NOEXCEPT
300	{
301	AssertReturn(a_rThat.m_pfnProducer, VERR_INVALID_STATE);
302	int rc = assignCopy((RTCRestBinary const )&a_rThat);
303	if (RT_SUCCESS(rc))
304	rc = m_strContentType.assignNoThrow(a_rThat.m_strContentType);
305	m_cbContentLength = a_rThat.m_cbContentLength;
306	m_pfnProducer = a_rThat.m_pfnProducer;
307	m_pvCallbackData = a_rThat.m_pvCallbackData;
308	return VINF_SUCCESS;
309	}
310
311
312	int RTCRestBinaryParameter::assignCopy(RTCRestBinary const &a_rThat) RT_NOEXCEPT
313	{
314	m_cbContentLength = a_rThat.getSize();
315	m_strContentType.setNull();
316	m_pfnProducer = NULL;
317	m_pvCallbackData = NULL;
318	return RTCRestBinary::assignCopy(a_rThat);
319	}
320
321
322	int RTCRestBinaryParameter::assignCopy(void const *a_pvData, size_t a_cbData) RT_NOEXCEPT
323	{
324	m_cbContentLength = a_cbData;
325	m_pfnProducer = NULL;
326	m_pvCallbackData = NULL;
327	return RTCRestBinary::assignCopy(a_pvData, a_cbData);
328	}
329
330
331	int RTCRestBinaryParameter::assignReadOnly(void const *a_pvData, size_t a_cbData) RT_NOEXCEPT
332	{
333	m_cbContentLength = a_cbData;
334	m_pfnProducer = NULL;
335	m_pvCallbackData = NULL;
336	return RTCRestBinary::assignReadOnly(a_pvData, a_cbData);
337	}
338
339
340	int RTCRestBinaryParameter::assignWriteable(void *a_pvBuf, size_t a_cbBuf) RT_NOEXCEPT
341	{
342	AssertMsgFailed(("Please use assignReadOnly!\n"));
343	return assignReadOnly(a_pvBuf, a_cbBuf);
344	}
345
346
347	RTCRestObjectBase *RTCRestBinaryParameter::baseClone() const RT_NOEXCEPT
348	{
349	RTCRestBinaryParameter *pClone = new (std::nothrow) RTCRestBinaryParameter();
350	if (pClone)
351	{
352	int rc = pClone->assignCopy(*this);
353	if (RT_SUCCESS(rc))
354	return pClone;
355	delete pClone;
356	}
357	return NULL;
358	}
359
360
361	int RTCRestBinaryParameter::resetToDefault() RT_NOEXCEPT
362	{
363	m_cbContentLength = UINT64_MAX;
364	m_pfnProducer = NULL;
365	m_pvCallbackData = NULL;
366	return RTCRestBinary::resetToDefault();
367	}
368
369
370	const char *RTCRestBinaryParameter::typeName(void) const RT_NOEXCEPT
371	{
372	return "RTCRestBinaryParameter";
373	}
374
375
376	/static/ DECLCALLBACK(RTCRestObjectBase *) RTCRestBinaryParameter::createInstance(void) RT_NOEXCEPT
377	{
378	return new (std::nothrow) RTCRestBinaryParameter();
379	}
380
381
382	int RTCRestBinaryParameter::setContentType(const char *a_pszContentType) RT_NOEXCEPT
383	{
384	return m_strContentType.assignNoThrow(a_pszContentType);
385	}
386
387
388	void RTCRestBinaryParameter::setProducerCallback(PFNPRODUCER a_pfnProducer, void a_pvCallbackData /= NULL*/,
389	uint64_t a_cbContentLength /= UINT64_MAX/) RT_NOEXCEPT
390	{
391	freeData();
392
393	m_pfnProducer = a_pfnProducer;
394	m_pvCallbackData = a_pvCallbackData;
395	m_cbContentLength = a_cbContentLength;
396	}
397
398
399	int RTCRestBinaryParameter::xmitPrepare(RTHTTP a_hHttp) const RT_NOEXCEPT
400	{
401	AssertReturn(m_pbData != NULL \|\| m_pfnProducer != NULL \|\| m_cbContentLength == 0, VERR_INVALID_STATE);
402
403
404	/*
405	* Set the content type if given.
406	*/
407	if (m_strContentType.isNotEmpty())
408	{
409	Assert(!RTHttpGetHeader(a_hHttp, RT_STR_TUPLE("Content-Type")));
410	int rc = RTHttpAddHeader(a_hHttp, "Content-Type", m_strContentType.c_str(), m_strContentType.length(),
411	RTHTTPADDHDR_F_BACK);
412	AssertRCReturn(rc, rc);
413	}
414
415	/*
416	* Set the content length if given.
417	*/
418	if (m_cbContentLength != UINT64_MAX)
419	{
420	const char *pszContentLength = RTHttpGetHeader(a_hHttp, RT_STR_TUPLE("Content-Length"));
421	AssertMsgReturn(!pszContentLength \|\| RTStrToUInt64(pszContentLength) == m_cbContentLength,
422	("pszContentLength=%s does not match m_cbContentLength=%RU64\n", pszContentLength, m_cbContentLength),
423	VERR_MISMATCH);
424	if (!pszContentLength)
425	{
426	char szValue[64];
427	ssize_t cchValue = RTStrFormatU64(szValue, sizeof(szValue), m_cbContentLength, 10, 0, 0, 0);
428	int rc = RTHttpAddHeader(a_hHttp, "Content-Length", szValue, cchValue, RTHTTPADDHDR_F_BACK);
429	AssertRCReturn(rc, rc);
430	}
431	}
432
433	/*
434	* Register an upload callback.
435	*/
436	int rc = RTHttpSetUploadCallback(a_hHttp, m_cbContentLength, xmitHttpCallback, (RTCRestBinaryParameter *)this);
437	AssertRCReturn(rc, rc);
438
439	return VINF_SUCCESS;
440
441	}
442
443
444	/static/ DECLCALLBACK(int)
445	RTCRestBinaryParameter::xmitHttpCallback(RTHTTP hHttp, void *pvBuf, size_t cbBuf,
446	uint64_t offContent, size_t pcbActual, void pvUser) RT_NOEXCEPT
447	{
448	RTCRestBinaryParameter pThis = (RTCRestBinaryParameter )pvUser;
449
450	/*
451	* Call the user upload callback if we've got one.
452	*/
453	if (pThis->m_pfnProducer)
454	return pThis->m_pfnProducer(pThis, pvBuf, cbBuf, offContent, pcbActual);
455
456	/*
457	* Feed from the memory buffer.
458	*/
459	if (offContent < pThis->m_cbContentLength)
460	{
461	uint64_t const cbLeft = pThis->m_cbContentLength - offContent;
462	size_t const cbToCopy = cbLeft >= cbBuf ? cbBuf : (size_t)cbLeft;
463	memcpy(pvBuf, &pThis->m_pbData[(size_t)offContent], cbToCopy);
464	*pcbActual = cbToCopy;
465	}
466	else
467	*pcbActual = 0;
468
469	RT_NOREF(hHttp);
470	return VINF_SUCCESS;
471	}
472
473
474	void RTCRestBinaryParameter::xmitComplete(RTHTTP a_hHttp) const RT_NOEXCEPT
475	{
476	/* Unset the callback. */
477	int rc = RTHttpSetUploadCallback(a_hHttp, UINT64_MAX, NULL, NULL);
478	AssertRC(rc);
479	}
480
481
482	/*********************************************************************************************************************************
483	* RTCRestBinaryResponse Implementation. *
484	*********************************************************************************************************************************/
485
486	/**
487	* Default constructor.
488	*/
489	RTCRestBinaryResponse::RTCRestBinaryResponse() RT_NOEXCEPT
490	: RTCRestBinary()
491	, m_cbContentLength(UINT64_MAX)
492	, m_cbDownloaded(0)
493	, m_pfnConsumer(NULL)
494	, m_pvCallbackData(NULL)
495	, m_cbMaxDownload(RTCREST_MAX_DOWNLOAD_SIZE_DEFAULT)
496	{
497	}
498
499
500	int RTCRestBinaryResponse::assignCopy(RTCRestBinaryResponse const &a_rThat) RT_NOEXCEPT
501	{
502	AssertReturn(a_rThat.m_pfnConsumer, VERR_INVALID_STATE);
503	int rc = assignCopy((RTCRestBinary const )&a_rThat);
504	m_cbContentLength = a_rThat.m_cbContentLength;
505	m_cbDownloaded = a_rThat.m_cbDownloaded;
506	m_cbMaxDownload = a_rThat.m_cbMaxDownload;
507	return rc;
508	}
509
510
511	int RTCRestBinaryResponse::assignCopy(RTCRestBinary const &a_rThat) RT_NOEXCEPT
512	{
513	m_cbContentLength = UINT64_MAX;
514	m_cbDownloaded = 0;
515	m_pfnConsumer = NULL;
516	m_pvCallbackData = NULL;
517	return RTCRestBinary::assignCopy(a_rThat);
518	}
519
520
521	int RTCRestBinaryResponse::assignCopy(void const *a_pvData, size_t a_cbData) RT_NOEXCEPT
522	{
523	RT_NOREF(a_pvData, a_cbData);
524	AssertMsgFailedReturn(("Makes no sense for downloads.\n"), VERR_INVALID_STATE);
525	}
526
527
528	int RTCRestBinaryResponse::assignReadOnly(void const *a_pvData, size_t a_cbData) RT_NOEXCEPT
529	{
530	RT_NOREF(a_pvData, a_cbData);
531	AssertMsgFailedReturn(("Makes no sense for downloads.\n"), VERR_INVALID_STATE);
532	}
533
534
535	int RTCRestBinaryResponse::assignWriteable(void *a_pvBuf, size_t a_cbBuf) RT_NOEXCEPT
536	{
537	m_cbContentLength = UINT64_MAX;
538	m_cbDownloaded = 0;
539	m_pfnConsumer = NULL;
540	m_pvCallbackData = NULL;
541	AssertStmt(a_cbBuf <= m_cbMaxDownload, m_cbMaxDownload = a_cbBuf);
542	return RTCRestBinary::assignWriteable(a_pvBuf, a_cbBuf);
543	}
544
545
546	RTCRestObjectBase *RTCRestBinaryResponse::baseClone() const RT_NOEXCEPT
547	{
548	RTCRestBinaryResponse *pClone = new (std::nothrow) RTCRestBinaryResponse();
549	if (pClone)
550	{
551	int rc = pClone->assignCopy(*this);
552	if (RT_SUCCESS(rc))
553	return pClone;
554	delete pClone;
555	}
556	return NULL;
557	}
558
559
560	int RTCRestBinaryResponse::resetToDefault() RT_NOEXCEPT
561	{
562	m_cbContentLength = UINT64_MAX;
563	m_cbDownloaded = 0;
564	m_pfnConsumer = NULL;
565	m_pvCallbackData = NULL;
566	m_cbMaxDownload = RTCREST_MAX_DOWNLOAD_SIZE_DEFAULT;
567	return RTCRestBinary::resetToDefault();
568	}
569
570
571	const char *RTCRestBinaryResponse::typeName(void) const RT_NOEXCEPT
572	{
573	return "RTCRestBinaryResponse";
574	}
575
576
577	/static/ DECLCALLBACK(RTCRestObjectBase *) RTCRestBinaryResponse::createInstance(void) RT_NOEXCEPT
578	{
579	return new (std::nothrow) RTCRestBinaryResponse();
580	}
581
582
583	void RTCRestBinaryResponse::setMaxDownloadSize(size_t a_cbMaxDownload) RT_NOEXCEPT
584	{
585	if (a_cbMaxDownload == 0)
586	m_cbMaxDownload = RTCREST_MAX_DOWNLOAD_SIZE_DEFAULT;
587	else
588	m_cbMaxDownload = a_cbMaxDownload;
589	}
590
591
592	void RTCRestBinaryResponse::setConsumerCallback(PFNCONSUMER a_pfnConsumer, void a_pvCallbackData /= NULL*/) RT_NOEXCEPT
593	{
594	freeData();
595
596	m_pfnConsumer = a_pfnConsumer;
597	m_pvCallbackData = a_pvCallbackData;
598	m_cbDownloaded = 0;
599	m_cbContentLength = UINT64_MAX;
600	}
601
602
603	int RTCRestBinaryResponse::receivePrepare(RTHTTP a_hHttp, uint32_t a_fCallbackFlags) RT_NOEXCEPT
604	{
605	AssertReturn(!m_fReadOnly, VERR_INVALID_STATE);
606
607	/*
608	* Register the download callback.
609	*/
610	int rc = RTHttpSetDownloadCallback(a_hHttp, a_fCallbackFlags, receiveHttpCallback, this);
611	AssertRC(rc);
612	return rc;
613	}
614
615
616	/static/ DECLCALLBACK(int)
617	RTCRestBinaryResponse::receiveHttpCallback(RTHTTP hHttp, void const *pvBuf, size_t cbBuf, uint32_t uHttpStatus,
618	uint64_t offContent, uint64_t cbContent, void *pvUser) RT_NOEXCEPT
619	{
620	RTCRestBinaryResponse pThis = (RTCRestBinaryResponse )pvUser;
621	Assert(offContent == pThis->m_cbDownloaded);
622	pThis->m_cbContentLength = cbContent;
623
624	/*
625	* Call the user download callback if we've got one.
626	*/
627	if (pThis->m_pfnConsumer)
628	{
629	int rc = pThis->m_pfnConsumer(pThis, pvBuf, cbBuf, uHttpStatus, offContent, cbContent);
630	if (RT_SUCCESS(rc))
631	pThis->m_cbDownloaded = offContent + cbBuf;
632	return rc;
633	}
634
635	/*
636	* Check download limit before adding more data.
637	*/
638	AssertMsgReturn(offContent + cbBuf <= pThis->m_cbMaxDownload,
639	("%RU64 + %zu = %RU64; max=%RU64", offContent, cbBuf, offContent + cbBuf, pThis->m_cbMaxDownload),
640	VERR_TOO_MUCH_DATA);
641
642	/*
643	* Make sure we've got sufficient writable buffer space before we copy in the data.
644	*/
645	AssertReturn(!pThis->m_fReadOnly, VERR_INVALID_STATE);
646	if (offContent + cbBuf <= pThis->m_cbAllocated)
647	{ /* likely, except for the first time. */ }
648	else
649	{
650	AssertMsgReturn(pThis->m_fFreeable,
651	("offContent=%RU64 cbBuf=%zu m_cbAllocated=%zu", offContent, cbBuf, pThis->m_cbAllocated),
652	VERR_TOO_MUCH_DATA);
653	AssertMsgReturn(cbContent <= pThis->m_cbMaxDownload \|\| cbContent == UINT64_MAX,
654	("cbContent: %RU64; max=%RU64", cbContent, pThis->m_cbMaxDownload),
655	VERR_TOO_MUCH_DATA);
656
657	if (offContent == 0 && cbContent != UINT64_MAX)
658	{
659	void *pvNew = RTMemRealloc(pThis->m_pbData, (size_t)cbContent);
660	if (!pvNew)
661	return VERR_NO_MEMORY;
662	pThis->m_pbData = (uint8_t *)pvNew;
663	pThis->m_cbAllocated = (size_t)cbContent;
664	}
665	else
666	{
667	size_t cbNeeded = offContent + cbBuf;
668	size_t cbNew;
669	if (pThis->m_cbAllocated == 0)
670	cbNew = RT_MAX(_64K, RT_ALIGN_Z(cbNeeded, _64K));
671	else if (pThis->m_cbAllocated < _64M && cbNeeded <= _64M)
672	{
673	cbNew = pThis->m_cbAllocated * 2;
674	while (cbNew < cbNeeded)
675	cbNew *= 2;
676	}
677	else
678	cbNew = RT_ALIGN_Z(cbNeeded, _32M);
679
680	void *pvNew = RTMemRealloc(pThis->m_pbData, cbNew);
681	if (!pvNew)
682	return VERR_NO_MEMORY;
683	pThis->m_pbData = (uint8_t *)pvNew;
684	pThis->m_cbAllocated = cbNew;
685	}
686	}
687
688	/*
689	* Do the copying.
690	*/
691	memcpy(&pThis->m_pbData[(size_t)offContent], pvBuf, cbBuf);
692	pThis->m_cbDownloaded = offContent + cbBuf;
693
694	/* we cap it at m_cbMaxDownload which is size_t so this cast is safe */
695	pThis->m_cbData = (size_t)pThis->m_cbDownloaded;
696
697	RT_NOREF(hHttp);
698	return VINF_SUCCESS;
699	}
700
701
702	void RTCRestBinaryResponse::receiveComplete(RTHTTP a_hHttp) RT_NOEXCEPT
703	{
704	/* Unset the callback. */
705	int rc = RTHttpSetDownloadCallback(a_hHttp, RTHTTPDOWNLOAD_F_ANY_STATUS, NULL, NULL);
706	AssertRC(rc);
707	}
708

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source: vbox/trunk/src/VBox/Runtime/common/rest/rest-binary.cpp@ 98859

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