asn1-basics.cpp@ 95596

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1	/* $Id: asn1-basics.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2	/** @file
3	* IPRT - ASN.1, Basic Operations.
4	*/
5
6	/*
7	* Copyright (C) 2006-2022 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	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#include "internal/iprt.h"
32	#include <iprt/asn1.h>
33
34	#include <iprt/alloca.h>
35	#include <iprt/bignum.h>
36	#include <iprt/ctype.h>
37	#include <iprt/err.h>
38	#include <iprt/string.h>
39	#include <iprt/uni.h>
40
41	#include <iprt/formats/asn1.h>
42
43
44	/*********************************************************************************************************************************
45	* Structures and Typedefs *
46	*********************************************************************************************************************************/
47	/**
48	* ASN.1 content/value allocation.
49	*
50	* The currently most frequent use of the RTAsn1 module is to decode ASN.1 byte
51	* streams. In that scenario we do not allocate memory for the raw content
52	* bytes, but share it with the byte stream. Also, a great number of RTASN1CORE
53	* structures will never need to have any content bytes allocated with this.
54	*
55	* So, in order to avoid adding an extra 16 (64-bit) or 8 (32-bit) bytes to each
56	* RTASN1CORE structure just to keep track of the occational content allocation,
57	* we put the allocator tracking structure inside the allocation. During
58	* allocator operations it lives temporarily on the stack.
59	*/
60	typedef struct RTASN1MEMCONTENT
61	{
62	/** The allocation tracker. */
63	RTASN1ALLOCATION Allocation;
64	#if ARCH_BITS == 32
65	uint32_t Padding; /*< Alignment padding. /
66	#endif
67	/** The content bytes, i.e. what RTASN1CORE::uData.pv points to. Use a 64-bit
68	* type here to emphasize that it's 8-byte aligned on all platforms. */
69	uint64_t au64Content[1];
70	} RTASN1MEMCONTENT;
71	AssertCompileMemberAlignment(RTASN1MEMCONTENT, au64Content, 8);
72	/** Pointer to a ASN.1 content allocation. */
73	typedef RTASN1MEMCONTENT *PRTASN1MEMCONTENT;
74
75
76
77	RTDECL(int) RTAsn1MemResizeArray(PRTASN1ARRAYALLOCATION pAllocation, void ***ppapvArray, uint32_t cCurrent, uint32_t cNew)
78	{
79	AssertReturn(pAllocation->pAllocator != NULL, VERR_WRONG_ORDER);
80	AssertReturn(pAllocation->cbEntry > 0, VERR_WRONG_ORDER);
81	AssertReturn(cCurrent <= pAllocation->cEntriesAllocated, VERR_INVALID_PARAMETER);
82	AssertReturn(cCurrent <= pAllocation->cPointersAllocated, VERR_INVALID_PARAMETER);
83	AssertReturn(cNew < _1M, VERR_OUT_OF_RANGE);
84	Assert(pAllocation->cEntriesAllocated <= pAllocation->cPointersAllocated);
85
86	/*
87	* Is there sufficent space allocated already?
88	*
89	* We keep unused entires ZEROed, therefore we must always call the allocator
90	* when shrinking (this also helps with the electric fence allocator).
91	*/
92	if (cNew <= pAllocation->cEntriesAllocated)
93	{
94	if (cCurrent <= cNew)
95	return VINF_SUCCESS;
96	pAllocation->pAllocator->pfnShrinkArray(pAllocation->pAllocator, pAllocation, ppapvArray, cCurrent, cNew);
97	return VINF_SUCCESS;
98	}
99
100	/*
101	* Must grow (or do initial alloc).
102	*/
103	pAllocation->cResizeCalls++;
104	return pAllocation->pAllocator->pfnGrowArray(pAllocation->pAllocator, pAllocation, ppapvArray, cNew);
105	}
106
107
108	RTDECL(void) RTAsn1MemFreeArray(PRTASN1ARRAYALLOCATION pAllocation, void **papvArray)
109	{
110	Assert(pAllocation->pAllocator != NULL);
111	if (papvArray)
112	{
113	pAllocation->pAllocator->pfnFreeArray(pAllocation->pAllocator, pAllocation, papvArray);
114	Assert(pAllocation->cPointersAllocated == 0);
115	Assert(pAllocation->cEntriesAllocated == 0);
116	}
117	}
118
119
120	RTDECL(int) RTAsn1MemAllocZ(PRTASN1ALLOCATION pAllocation, void **ppvMem, size_t cbMem)
121	{
122	AssertReturn(pAllocation->pAllocator != NULL, VERR_WRONG_ORDER);
123	AssertPtr(ppvMem);
124	Assert(cbMem > 0);
125	int rc = pAllocation->pAllocator->pfnAlloc(pAllocation->pAllocator, pAllocation, ppvMem, cbMem);
126	Assert(pAllocation->cbAllocated >= cbMem \|\| RT_FAILURE_NP(rc));
127	return rc;
128	}
129
130
131	RTDECL(int) RTAsn1MemDup(PRTASN1ALLOCATION pAllocation, void *ppvMem, const void pvSrc, size_t cbMem)
132	{
133	AssertReturn(pAllocation->pAllocator != NULL, VERR_WRONG_ORDER);
134	AssertPtr(ppvMem);
135	AssertPtr(pvSrc);
136	Assert(cbMem > 0);
137	int rc = pAllocation->pAllocator->pfnAlloc(pAllocation->pAllocator, pAllocation, ppvMem, cbMem);
138	if (RT_SUCCESS(rc))
139	{
140	Assert(pAllocation->cbAllocated >= cbMem);
141	memcpy(*ppvMem, pvSrc, cbMem);
142	return VINF_SUCCESS;
143	}
144	return rc;
145	}
146
147
148	RTDECL(void) RTAsn1MemFree(PRTASN1ALLOCATION pAllocation, void *pv)
149	{
150	Assert(pAllocation->pAllocator != NULL);
151	if (pv)
152	{
153	pAllocation->pAllocator->pfnFree(pAllocation->pAllocator, pAllocation, pv);
154	Assert(pAllocation->cbAllocated == 0);
155	}
156	}
157
158
159	RTDECL(PRTASN1ALLOCATION) RTAsn1MemInitAllocation(PRTASN1ALLOCATION pAllocation, PCRTASN1ALLOCATORVTABLE pAllocator)
160	{
161	pAllocation->cbAllocated = 0;
162	pAllocation->cReallocs = 0;
163	pAllocation->uReserved0 = 0;
164	pAllocation->pAllocator = pAllocator;
165	return pAllocation;
166	}
167
168
169	RTDECL(PRTASN1ARRAYALLOCATION) RTAsn1MemInitArrayAllocation(PRTASN1ARRAYALLOCATION pAllocation,
170	PCRTASN1ALLOCATORVTABLE pAllocator, size_t cbEntry)
171	{
172	Assert(cbEntry >= sizeof(RTASN1CORE));
173	Assert(cbEntry < _1M);
174	Assert(RT_ALIGN_Z(cbEntry, sizeof(void *)) == cbEntry);
175	pAllocation->cbEntry = (uint32_t)cbEntry;
176	pAllocation->cPointersAllocated = 0;
177	pAllocation->cEntriesAllocated = 0;
178	pAllocation->cResizeCalls = 0;
179	pAllocation->uReserved0 = 0;
180	pAllocation->pAllocator = pAllocator;
181	return pAllocation;
182	}
183
184
185	RTDECL(int) RTAsn1ContentAllocZ(PRTASN1CORE pAsn1Core, size_t cb, PCRTASN1ALLOCATORVTABLE pAllocator)
186	{
187	AssertReturn(pAllocator != NULL, VERR_WRONG_ORDER);
188	AssertReturn(cb > 0 && cb < _1G, VERR_INVALID_PARAMETER);
189	AssertPtr(pAsn1Core);
190	AssertReturn(!(pAsn1Core->fFlags & RTASN1CORE_F_ALLOCATED_CONTENT), VERR_INVALID_STATE);
191
192	/* Initialize the temporary allocation tracker. */
193	RTASN1ALLOCATION Allocation;
194	Allocation.cbAllocated = 0;
195	Allocation.cReallocs = 0;
196	Allocation.uReserved0 = 0;
197	Allocation.pAllocator = pAllocator;
198
199	/* Make the allocation. */
200	uint32_t cbAlloc = RT_UOFFSETOF(RTASN1MEMCONTENT, au64Content) + (uint32_t)cb;
201	PRTASN1MEMCONTENT pHdr;
202	int rc = pAllocator->pfnAlloc(pAllocator, &Allocation, (void **)&pHdr, cbAlloc);
203	if (RT_SUCCESS(rc))
204	{
205	Assert(Allocation.cbAllocated >= cbAlloc);
206	pHdr->Allocation = Allocation;
207	pAsn1Core->cb = (uint32_t)cb;
208	pAsn1Core->uData.pv = &pHdr->au64Content[0];
209	pAsn1Core->fFlags \|= RTASN1CORE_F_ALLOCATED_CONTENT;
210	}
211
212	return rc;
213	}
214
215
216	RTDECL(int) RTAsn1ContentDup(PRTASN1CORE pAsn1Core, void const *pvSrc, size_t cbSrc, PCRTASN1ALLOCATORVTABLE pAllocator)
217	{
218	int rc = RTAsn1ContentAllocZ(pAsn1Core, cbSrc, pAllocator);
219	if (RT_SUCCESS(rc))
220	memcpy((void *)pAsn1Core->uData.pv, pvSrc, cbSrc);
221	return rc;
222	}
223
224
225	RTDECL(int) RTAsn1ContentReallocZ(PRTASN1CORE pAsn1Core, size_t cb, PCRTASN1ALLOCATORVTABLE pAllocator)
226	{
227	/* Validate input. */
228	AssertPtr(pAsn1Core);
229	AssertReturn(cb < _1G, VERR_INVALID_PARAMETER);
230
231	if (cb > 0)
232	{
233	/*
234	* Case 1 - Initial allocation.
235	*/
236	uint32_t cbNeeded = RT_UOFFSETOF(RTASN1MEMCONTENT, au64Content) + (uint32_t)cb;
237	if (!(pAsn1Core->fFlags & RTASN1CORE_F_ALLOCATED_CONTENT))
238	return RTAsn1ContentAllocZ(pAsn1Core, cb, pAllocator);
239
240	/* Locate the header. */
241	PRTASN1MEMCONTENT pHdr = RT_FROM_MEMBER(pAsn1Core->uData.pv, RTASN1MEMCONTENT, au64Content);
242
243	/*
244	* Case 2 - Reallocation using the same allocator.
245	*/
246	if ( pHdr->Allocation.pAllocator == pAllocator
247	\|\| !pAllocator)
248	{
249	pHdr->Allocation.cReallocs++;
250
251	/* Modify the allocation if necessary. */
252	if (pHdr->Allocation.cbAllocated < cbNeeded)
253	{
254	RTASN1ALLOCATION Allocation = pHdr->Allocation;
255	int rc = Allocation.pAllocator->pfnRealloc(Allocation.pAllocator, &Allocation, pHdr, (void **)&pHdr, cbNeeded);
256	if (RT_FAILURE(rc))
257	return rc;
258	Assert(Allocation.cbAllocated >= cbNeeded);
259	pAsn1Core->uData.pv = &pHdr->au64Content[0];
260	pHdr->Allocation = Allocation;
261	}
262
263	/* Clear any additional memory we're letting the user use and
264	update the content size. */
265	if (pAsn1Core->cb < cb)
266	RT_BZERO((uint8_t *)&pAsn1Core->uData.pu8[pAsn1Core->cb], cb - pAsn1Core->cb);
267	pAsn1Core->cb = (uint32_t)cb;
268	}
269	/*
270	* Case 3 - Reallocation using a different allocator.
271	*/
272	else
273	{
274	/* Initialize the temporary allocation tracker. */
275	RTASN1ALLOCATION Allocation;
276	Allocation.cbAllocated = 0;
277	Allocation.cReallocs = pHdr->Allocation.cReallocs + 1;
278	Allocation.uReserved0 = 0;
279	Allocation.pAllocator = pAllocator;
280
281	/* Make the allocation. */
282	PRTASN1MEMCONTENT pHdrNew;
283	int rc = pAllocator->pfnAlloc(pAllocator, &Allocation, (void **)&pHdrNew, cbNeeded);
284	if (RT_FAILURE(rc))
285	return rc;
286	Assert(Allocation.cbAllocated >= cbNeeded);
287
288	/* Duplicate the old content and zero any new memory we might've added. */
289	if (pAsn1Core->cb >= cb)
290	memcpy(&pHdrNew->au64Content[0], &pHdr->au64Content[0], cb);
291	else
292	{
293	memcpy(&pHdrNew->au64Content[0], &pHdr->au64Content[0], pAsn1Core->cb);
294	RT_BZERO((uint8_t *)&pHdrNew->au64Content[0] + pAsn1Core->cb, cb - pAsn1Core->cb);
295	}
296
297	/* Update the core. */
298	pHdrNew->Allocation = Allocation;
299	pAsn1Core->uData.pv = &pHdrNew->au64Content[0];
300	pAsn1Core->fFlags \|= RTASN1CORE_F_ALLOCATED_CONTENT; /* free cleared it. */
301	pAsn1Core->cb = (uint32_t)cb;
302
303	/* Free the old content. */
304	Allocation = pHdr->Allocation;
305	Allocation.pAllocator->pfnFree(Allocation.pAllocator, &Allocation, pHdr);
306	Assert(Allocation.cbAllocated == 0);
307	}
308	}
309	/*
310	* Case 4 - It's a request to free the memory.
311	*/
312	else
313	RTAsn1ContentFree(pAsn1Core);
314	return VINF_SUCCESS;
315	}
316
317
318	RTDECL(void) RTAsn1ContentFree(PRTASN1CORE pAsn1Core)
319	{
320	if (pAsn1Core)
321	{
322	pAsn1Core->cb = 0;
323	if (pAsn1Core->fFlags & RTASN1CORE_F_ALLOCATED_CONTENT)
324	{
325	pAsn1Core->fFlags &= ~RTASN1CORE_F_ALLOCATED_CONTENT;
326	AssertReturnVoid(pAsn1Core->uData.pv);
327
328	PRTASN1MEMCONTENT pHdr = RT_FROM_MEMBER(pAsn1Core->uData.pv, RTASN1MEMCONTENT, au64Content);
329	RTASN1ALLOCATION Allocation = pHdr->Allocation;
330
331	Allocation.pAllocator->pfnFree(Allocation.pAllocator, &Allocation, pHdr);
332	Assert(Allocation.cbAllocated == 0);
333	}
334	pAsn1Core->uData.pv = NULL;
335	}
336	}
337
338
339
340	/*
341	* Virtual method table based API.
342	*/
343
344	RTDECL(void) RTAsn1VtDelete(PRTASN1CORE pThisCore)
345	{
346	if (pThisCore)
347	{
348	PCRTASN1COREVTABLE pOps = pThisCore->pOps;
349	if (pOps)
350	pOps->pfnDtor(pThisCore);
351	}
352	}
353
354
355	/**
356	* Context data passed by RTAsn1VtDeepEnum to it's worker callbacks.
357	*/
358	typedef struct RTASN1DEEPENUMCTX
359	{
360	PFNRTASN1ENUMCALLBACK pfnCallback;
361	void *pvUser;
362	} RTASN1DEEPENUMCTX;
363
364
365	static DECLCALLBACK(int) rtAsn1VtDeepEnumDepthFirst(PRTASN1CORE pThisCore, const char pszName, uint32_t uDepth, void pvUser)
366	{
367	AssertReturn(pThisCore, VINF_SUCCESS);
368
369	if (pThisCore->pOps && pThisCore->pOps->pfnEnum)
370	{
371	int rc = pThisCore->pOps->pfnEnum(pThisCore, rtAsn1VtDeepEnumDepthFirst, uDepth, pvUser);
372	if (rc != VINF_SUCCESS)
373	return rc;
374	}
375
376	RTASN1DEEPENUMCTX pCtx = (RTASN1DEEPENUMCTX )pvUser;
377	return pCtx->pfnCallback(pThisCore, pszName, uDepth, pCtx->pvUser);
378	}
379
380
381	static DECLCALLBACK(int) rtAsn1VtDeepEnumDepthLast(PRTASN1CORE pThisCore, const char pszName, uint32_t uDepth, void pvUser)
382	{
383	AssertReturn(pThisCore, VINF_SUCCESS);
384
385	RTASN1DEEPENUMCTX pCtx = (RTASN1DEEPENUMCTX )pvUser;
386	int rc = pCtx->pfnCallback(pThisCore, pszName, uDepth, pCtx->pvUser);
387	if (rc == VINF_SUCCESS)
388	{
389	if (pThisCore->pOps && pThisCore->pOps->pfnEnum)
390	rc = pThisCore->pOps->pfnEnum(pThisCore, rtAsn1VtDeepEnumDepthFirst, uDepth, pvUser);
391	}
392	return rc;
393	}
394
395
396	RTDECL(int) RTAsn1VtDeepEnum(PRTASN1CORE pThisCore, bool fDepthFirst, uint32_t uDepth,
397	PFNRTASN1ENUMCALLBACK pfnCallback, void *pvUser)
398	{
399	int rc;
400	if (RTAsn1Core_IsPresent(pThisCore))
401	{
402	PCRTASN1COREVTABLE pOps = pThisCore->pOps;
403	if (pOps && pOps->pfnEnum)
404	{
405	RTASN1DEEPENUMCTX Ctx;
406	Ctx.pfnCallback = pfnCallback;
407	Ctx.pvUser = pvUser;
408	rc = pOps->pfnEnum(pThisCore, fDepthFirst ? rtAsn1VtDeepEnumDepthFirst : rtAsn1VtDeepEnumDepthLast, uDepth, &Ctx);
409	}
410	else
411	rc = VINF_SUCCESS;
412	}
413	else
414	rc = VINF_SUCCESS;
415	return rc;
416	}
417
418
419	RTDECL(int) RTAsn1VtClone(PRTASN1CORE pThisCore, PRTASN1CORE pSrcCore, PCRTASN1ALLOCATORVTABLE pAllocator)
420	{
421	AssertPtrReturn(pThisCore, VERR_INVALID_POINTER);
422	AssertPtrReturn(pSrcCore, VERR_INVALID_POINTER);
423	AssertPtrReturn(pAllocator, VERR_INVALID_POINTER);
424
425	if (RTAsn1Core_IsPresent(pSrcCore))
426	{
427	AssertPtrReturn(pSrcCore->pOps, VERR_INVALID_POINTER);
428	AssertPtr(pSrcCore->pOps->pfnClone);
429	return pSrcCore->pOps->pfnClone(pThisCore, pSrcCore, pAllocator);
430	}
431
432	RT_ZERO(*pThisCore);
433	return VINF_SUCCESS;
434	}
435
436
437	RTDECL(int) RTAsn1VtCompare(PCRTASN1CORE pLeftCore, PCRTASN1CORE pRightCore)
438	{
439	int iDiff;
440	if (RTAsn1Core_IsPresent(pLeftCore))
441	{
442	if (RTAsn1Core_IsPresent(pRightCore))
443	{
444	PCRTASN1COREVTABLE pOps = pLeftCore->pOps;
445	if (pOps == pRightCore->pOps)
446	{
447	AssertPtr(pOps->pfnCompare);
448	iDiff = pOps->pfnCompare(pLeftCore, pRightCore);
449	}
450	else
451	iDiff = (uintptr_t)pOps < (uintptr_t)pRightCore->pOps ? -1 : 1;
452	}
453	else
454	iDiff = 1;
455	}
456	else
457	iDiff = 0 - (int)RTAsn1Core_IsPresent(pRightCore);
458	return iDiff;
459	}
460
461
462	RTDECL(int) RTAsn1VtCheckSanity(PCRTASN1CORE pThisCore, uint32_t fFlags,
463	PRTERRINFO pErrInfo, const char *pszErrorTag)
464	{
465	int rc;
466	if (RTAsn1Core_IsPresent(pThisCore))
467	{
468	PCRTASN1COREVTABLE pOps = pThisCore->pOps;
469	if (pOps && pOps->pfnCheckSanity)
470	rc = pOps->pfnCheckSanity(pThisCore, fFlags, pErrInfo, pszErrorTag);
471	else if (pOps)
472	rc = RTErrInfoSetF(pErrInfo, VERR_ASN1_NO_CHECK_SANITY_METHOD,
473	"%s: Has no pfnCheckSanity function.", pszErrorTag);
474	else
475	rc = RTErrInfoSetF(pErrInfo, VERR_ASN1_NO_VTABLE, "%s: Has no Vtable function.", pszErrorTag);
476	}
477	else
478	rc = RTErrInfoSetF(pErrInfo, VERR_ASN1_NOT_PRESENT, "%s: Not present.", pszErrorTag);
479	return rc;
480	}
481
482
483
484	/*
485	* Dummy ASN.1 object.
486	*/
487
488	RTDECL(int) RTAsn1Dummy_InitEx(PRTASN1DUMMY pThis)
489	{
490	return RTAsn1Core_InitEx(&pThis->Asn1Core,
491	UINT32_MAX,
492	ASN1_TAGCLASS_PRIVATE \| ASN1_TAGFLAG_CONSTRUCTED,
493	NULL,
494	RTASN1CORE_F_DUMMY);
495	}
496
497
498	/*
499	* ASN.1 SEQUENCE OF object.
500	*/
501
502	RTDECL(int) RTAsn1SeqOfCore_Init(PRTASN1SEQOFCORE pThis, PCRTASN1COREVTABLE pVtable)
503	{
504	return RTAsn1Core_InitEx(&pThis->Asn1Core,
505	ASN1_TAG_SEQUENCE,
506	ASN1_TAGCLASS_UNIVERSAL \| ASN1_TAGFLAG_CONSTRUCTED,
507	pVtable,
508	RTASN1CORE_F_PRESENT);
509	}
510
511
512	RTDECL(int) RTAsn1SeqOfCore_Clone(PRTASN1SEQOFCORE pThis, PCRTASN1COREVTABLE pVtable, PCRTASN1SEQOFCORE pSrc)
513	{
514	AssertReturn(pSrc->Asn1Core.pOps == pVtable, VERR_ASN1_INTERNAL_ERROR_5);
515	return RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core);
516	}
517
518
519	/*
520	* ASN.1 SET OF object.
521	*/
522
523	RTDECL(int) RTAsn1SetOfCore_Init(PRTASN1SETOFCORE pThis, PCRTASN1COREVTABLE pVtable)
524	{
525	return RTAsn1Core_InitEx(&pThis->Asn1Core,
526	ASN1_TAG_SET,
527	ASN1_TAGCLASS_UNIVERSAL \| ASN1_TAGFLAG_CONSTRUCTED,
528	pVtable,
529	RTASN1CORE_F_PRESENT);
530	}
531
532
533	RTDECL(int) RTAsn1SetOfCore_Clone(PRTASN1SETOFCORE pThis, PCRTASN1COREVTABLE pVtable, PCRTASN1SETOFCORE pSrc)
534	{
535	AssertReturn(pSrc->Asn1Core.pOps == pVtable, VERR_ASN1_INTERNAL_ERROR_5);
536	return RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core);
537	}
538
539
540	/*
541	* ASN.1 SEQUENCE object.
542	*/
543
544	RTDECL(int) RTAsn1SequenceCore_Init(PRTASN1SEQUENCECORE pThis, PCRTASN1COREVTABLE pVtable)
545	{
546	return RTAsn1Core_InitEx(&pThis->Asn1Core,
547	ASN1_TAG_SEQUENCE,
548	ASN1_TAGCLASS_UNIVERSAL \| ASN1_TAGFLAG_CONSTRUCTED,
549	pVtable,
550	RTASN1CORE_F_PRESENT);
551	}
552
553
554	RTDECL(int) RTAsn1SequenceCore_Clone(PRTASN1SEQUENCECORE pThis, PCRTASN1COREVTABLE pVtable, PCRTASN1SEQUENCECORE pSrc)
555	{
556	AssertReturn(pSrc->Asn1Core.pOps == pVtable, VERR_ASN1_INTERNAL_ERROR_5);
557	return RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core);
558	}
559
560
561	/*
562	* ASN.1 SEQUENCE object - only used by SPC, so probably doing something wrong there.
563	*/
564
565	RTDECL(int) RTAsn1SetCore_Init(PRTASN1SETCORE pThis, PCRTASN1COREVTABLE pVtable)
566	{
567	return RTAsn1Core_InitEx(&pThis->Asn1Core,
568	ASN1_TAG_SET,
569	ASN1_TAGCLASS_UNIVERSAL \| ASN1_TAGFLAG_CONSTRUCTED,
570	pVtable,
571	RTASN1CORE_F_PRESENT);
572	}
573
574
575	RTDECL(int) RTAsn1SetCore_Clone(PRTASN1SETCORE pThis, PCRTASN1COREVTABLE pVtable, PCRTASN1SETCORE pSrc)
576	{
577	AssertReturn(pSrc->Asn1Core.pOps == pVtable, VERR_ASN1_INTERNAL_ERROR_5);
578	return RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core);
579	}
580
581
582	/*
583	* ASN.1 Context Tag object.
584	*/
585
586	RTDECL(int) RTAsn1ContextTagN_Init(PRTASN1CONTEXTTAG pThis, uint32_t uTag, PCRTASN1COREVTABLE pVtable)
587	{
588	return RTAsn1Core_InitEx(&pThis->Asn1Core,
589	uTag,
590	ASN1_TAGCLASS_CONTEXT \| ASN1_TAGFLAG_CONSTRUCTED,
591	pVtable,
592	RTASN1CORE_F_PRESENT);
593	}
594
595
596	RTDECL(int) RTAsn1ContextTagN_Clone(PRTASN1CONTEXTTAG pThis, PCRTASN1CONTEXTTAG pSrc, uint32_t uTag)
597	{
598	Assert(pSrc->Asn1Core.uTag == uTag \|\| !RTASN1CORE_IS_PRESENT(&pSrc->Asn1Core)); RT_NOREF_PV(uTag);
599	return RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core);
600	}
601

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source: vbox/trunk/src/VBox/Runtime/common/asn1/asn1-basics.cpp@ 95596

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