diff options
Diffstat (limited to 'src/VBox/Runtime/common/asn1/asn1-basics.cpp')
| -rw-r--r-- | src/VBox/Runtime/common/asn1/asn1-basics.cpp | 611 |
1 files changed, 611 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/asn1/asn1-basics.cpp b/src/VBox/Runtime/common/asn1/asn1-basics.cpp new file mode 100644 index 00000000..6337ad74 --- /dev/null +++ b/src/VBox/Runtime/common/asn1/asn1-basics.cpp @@ -0,0 +1,611 @@ +/* $Id: asn1-basics.cpp $ */ +/** @file + * IPRT - ASN.1, Basic Operations. + */ + +/* + * Copyright (C) 2006-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "internal/iprt.h" +#include <iprt/asn1.h> + +#include <iprt/alloca.h> +#include <iprt/bignum.h> +#include <iprt/ctype.h> +#include <iprt/err.h> +#include <iprt/string.h> +#include <iprt/uni.h> + +#include <iprt/formats/asn1.h> + + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ +/** + * ASN.1 content/value allocation. + * + * The currently most frequent use of the RTAsn1 module is to decode ASN.1 byte + * streams. In that scenario we do not allocate memory for the raw content + * bytes, but share it with the byte stream. Also, a great number of RTASN1CORE + * structures will never need to have any content bytes allocated with this. + * + * So, in order to avoid adding an extra 16 (64-bit) or 8 (32-bit) bytes to each + * RTASN1CORE structure just to keep track of the occational content allocation, + * we put the allocator tracking structure inside the allocation. During + * allocator operations it lives temporarily on the stack. + */ +typedef struct RTASN1MEMCONTENT +{ + /** The allocation tracker. */ + RTASN1ALLOCATION Allocation; +#if ARCH_BITS == 32 + uint32_t Padding; /**< Alignment padding. */ +#endif + /** The content bytes, i.e. what RTASN1CORE::uData.pv points to. Use a 64-bit + * type here to emphasize that it's 8-byte aligned on all platforms. */ + uint64_t au64Content[1]; +} RTASN1MEMCONTENT; +AssertCompileMemberAlignment(RTASN1MEMCONTENT, au64Content, 8); +/** Pointer to a ASN.1 content allocation. */ +typedef RTASN1MEMCONTENT *PRTASN1MEMCONTENT; + + + +RTDECL(int) RTAsn1MemResizeArray(PRTASN1ARRAYALLOCATION pAllocation, void ***ppapvArray, uint32_t cCurrent, uint32_t cNew) +{ + AssertReturn(pAllocation->pAllocator != NULL, VERR_WRONG_ORDER); + AssertReturn(pAllocation->cbEntry > 0, VERR_WRONG_ORDER); + AssertReturn(cCurrent <= pAllocation->cEntriesAllocated, VERR_INVALID_PARAMETER); + AssertReturn(cCurrent <= pAllocation->cPointersAllocated, VERR_INVALID_PARAMETER); + AssertReturn(cNew < _1M, VERR_OUT_OF_RANGE); + Assert(pAllocation->cEntriesAllocated <= pAllocation->cPointersAllocated); + + /* + * Is there sufficent space allocated already? + * + * We keep unused entires ZEROed, therefore we must always call the allocator + * when shrinking (this also helps with the electric fence allocator). + */ + if (cNew <= pAllocation->cEntriesAllocated) + { + if (cCurrent <= cNew) + return VINF_SUCCESS; + pAllocation->pAllocator->pfnShrinkArray(pAllocation->pAllocator, pAllocation, ppapvArray, cCurrent, cNew); + return VINF_SUCCESS; + } + + /* + * Must grow (or do initial alloc). + */ + pAllocation->cResizeCalls++; + return pAllocation->pAllocator->pfnGrowArray(pAllocation->pAllocator, pAllocation, ppapvArray, cNew); +} + + +RTDECL(void) RTAsn1MemFreeArray(PRTASN1ARRAYALLOCATION pAllocation, void **papvArray) +{ + Assert(pAllocation->pAllocator != NULL); + if (papvArray) + { + pAllocation->pAllocator->pfnFreeArray(pAllocation->pAllocator, pAllocation, papvArray); + Assert(pAllocation->cPointersAllocated == 0); + Assert(pAllocation->cEntriesAllocated == 0); + } +} + + +RTDECL(int) RTAsn1MemAllocZ(PRTASN1ALLOCATION pAllocation, void **ppvMem, size_t cbMem) +{ + AssertReturn(pAllocation->pAllocator != NULL, VERR_WRONG_ORDER); + AssertPtr(ppvMem); + Assert(cbMem > 0); + int rc = pAllocation->pAllocator->pfnAlloc(pAllocation->pAllocator, pAllocation, ppvMem, cbMem); + Assert(pAllocation->cbAllocated >= cbMem || RT_FAILURE_NP(rc)); + return rc; +} + + +RTDECL(int) RTAsn1MemDup(PRTASN1ALLOCATION pAllocation, void **ppvMem, const void *pvSrc, size_t cbMem) +{ + AssertReturn(pAllocation->pAllocator != NULL, VERR_WRONG_ORDER); + AssertPtr(ppvMem); + AssertPtr(pvSrc); + Assert(cbMem > 0); + int rc = pAllocation->pAllocator->pfnAlloc(pAllocation->pAllocator, pAllocation, ppvMem, cbMem); + if (RT_SUCCESS(rc)) + { + Assert(pAllocation->cbAllocated >= cbMem); + memcpy(*ppvMem, pvSrc, cbMem); + return VINF_SUCCESS; + } + return rc; +} + + +RTDECL(void) RTAsn1MemFree(PRTASN1ALLOCATION pAllocation, void *pv) +{ + Assert(pAllocation->pAllocator != NULL); + if (pv) + { + pAllocation->pAllocator->pfnFree(pAllocation->pAllocator, pAllocation, pv); + Assert(pAllocation->cbAllocated == 0); + } +} + + +RTDECL(PRTASN1ALLOCATION) RTAsn1MemInitAllocation(PRTASN1ALLOCATION pAllocation, PCRTASN1ALLOCATORVTABLE pAllocator) +{ + pAllocation->cbAllocated = 0; + pAllocation->cReallocs = 0; + pAllocation->uReserved0 = 0; + pAllocation->pAllocator = pAllocator; + return pAllocation; +} + + +RTDECL(PRTASN1ARRAYALLOCATION) RTAsn1MemInitArrayAllocation(PRTASN1ARRAYALLOCATION pAllocation, + PCRTASN1ALLOCATORVTABLE pAllocator, size_t cbEntry) +{ + Assert(cbEntry >= sizeof(RTASN1CORE)); + Assert(cbEntry < _1M); + Assert(RT_ALIGN_Z(cbEntry, sizeof(void *)) == cbEntry); + pAllocation->cbEntry = (uint32_t)cbEntry; + pAllocation->cPointersAllocated = 0; + pAllocation->cEntriesAllocated = 0; + pAllocation->cResizeCalls = 0; + pAllocation->uReserved0 = 0; + pAllocation->pAllocator = pAllocator; + return pAllocation; +} + + +RTDECL(int) RTAsn1ContentAllocZ(PRTASN1CORE pAsn1Core, size_t cb, PCRTASN1ALLOCATORVTABLE pAllocator) +{ + AssertReturn(pAllocator != NULL, VERR_WRONG_ORDER); + AssertReturn(cb > 0 && cb < _1G, VERR_INVALID_PARAMETER); + AssertPtr(pAsn1Core); + AssertReturn(!(pAsn1Core->fFlags & RTASN1CORE_F_ALLOCATED_CONTENT), VERR_INVALID_STATE); + + /* Initialize the temporary allocation tracker. */ + RTASN1ALLOCATION Allocation; + Allocation.cbAllocated = 0; + Allocation.cReallocs = 0; + Allocation.uReserved0 = 0; + Allocation.pAllocator = pAllocator; + + /* Make the allocation. */ + uint32_t cbAlloc = RT_UOFFSETOF(RTASN1MEMCONTENT, au64Content) + (uint32_t)cb; + PRTASN1MEMCONTENT pHdr; + int rc = pAllocator->pfnAlloc(pAllocator, &Allocation, (void **)&pHdr, cbAlloc); + if (RT_SUCCESS(rc)) + { + Assert(Allocation.cbAllocated >= cbAlloc); + pHdr->Allocation = Allocation; + pAsn1Core->cb = (uint32_t)cb; + pAsn1Core->uData.pv = &pHdr->au64Content[0]; + pAsn1Core->fFlags |= RTASN1CORE_F_ALLOCATED_CONTENT; + } + + return rc; +} + + +RTDECL(int) RTAsn1ContentDup(PRTASN1CORE pAsn1Core, void const *pvSrc, size_t cbSrc, PCRTASN1ALLOCATORVTABLE pAllocator) +{ + int rc = RTAsn1ContentAllocZ(pAsn1Core, cbSrc, pAllocator); + if (RT_SUCCESS(rc)) + memcpy((void *)pAsn1Core->uData.pv, pvSrc, cbSrc); + return rc; +} + + +RTDECL(int) RTAsn1ContentReallocZ(PRTASN1CORE pAsn1Core, size_t cb, PCRTASN1ALLOCATORVTABLE pAllocator) +{ + /* Validate input. */ + AssertPtr(pAsn1Core); + AssertReturn(cb < _1G, VERR_INVALID_PARAMETER); + + if (cb > 0) + { + /* + * Case 1 - Initial allocation. + */ + uint32_t cbNeeded = RT_UOFFSETOF(RTASN1MEMCONTENT, au64Content) + (uint32_t)cb; + if (!(pAsn1Core->fFlags & RTASN1CORE_F_ALLOCATED_CONTENT)) + return RTAsn1ContentAllocZ(pAsn1Core, cb, pAllocator); + + /* Locate the header. */ + PRTASN1MEMCONTENT pHdr = RT_FROM_MEMBER(pAsn1Core->uData.pv, RTASN1MEMCONTENT, au64Content); + + /* + * Case 2 - Reallocation using the same allocator. + */ + if ( pHdr->Allocation.pAllocator == pAllocator + || !pAllocator) + { + pHdr->Allocation.cReallocs++; + + /* Modify the allocation if necessary. */ + if (pHdr->Allocation.cbAllocated < cbNeeded) + { + RTASN1ALLOCATION Allocation = pHdr->Allocation; + int rc = Allocation.pAllocator->pfnRealloc(Allocation.pAllocator, &Allocation, pHdr, (void **)&pHdr, cbNeeded); + if (RT_FAILURE(rc)) + return rc; + Assert(Allocation.cbAllocated >= cbNeeded); + pAsn1Core->uData.pv = &pHdr->au64Content[0]; + pHdr->Allocation = Allocation; + } + + /* Clear any additional memory we're letting the user use and + update the content size. */ + if (pAsn1Core->cb < cb) + RT_BZERO((uint8_t *)&pAsn1Core->uData.pu8[pAsn1Core->cb], cb - pAsn1Core->cb); + pAsn1Core->cb = (uint32_t)cb; + } + /* + * Case 3 - Reallocation using a different allocator. + */ + else + { + /* Initialize the temporary allocation tracker. */ + RTASN1ALLOCATION Allocation; + Allocation.cbAllocated = 0; + Allocation.cReallocs = pHdr->Allocation.cReallocs + 1; + Allocation.uReserved0 = 0; + Allocation.pAllocator = pAllocator; + + /* Make the allocation. */ + PRTASN1MEMCONTENT pHdrNew; + int rc = pAllocator->pfnAlloc(pAllocator, &Allocation, (void **)&pHdrNew, cbNeeded); + if (RT_FAILURE(rc)) + return rc; + Assert(Allocation.cbAllocated >= cbNeeded); + + /* Duplicate the old content and zero any new memory we might've added. */ + if (pAsn1Core->cb >= cb) + memcpy(&pHdrNew->au64Content[0], &pHdr->au64Content[0], cb); + else + { + memcpy(&pHdrNew->au64Content[0], &pHdr->au64Content[0], pAsn1Core->cb); + RT_BZERO((uint8_t *)&pHdrNew->au64Content[0] + pAsn1Core->cb, cb - pAsn1Core->cb); + } + + /* Update the core. */ + pHdrNew->Allocation = Allocation; + pAsn1Core->uData.pv = &pHdrNew->au64Content[0]; + pAsn1Core->fFlags |= RTASN1CORE_F_ALLOCATED_CONTENT; /* free cleared it. */ + pAsn1Core->cb = (uint32_t)cb; + + /* Free the old content. */ + Allocation = pHdr->Allocation; + Allocation.pAllocator->pfnFree(Allocation.pAllocator, &Allocation, pHdr); + Assert(Allocation.cbAllocated == 0); + } + } + /* + * Case 4 - It's a request to free the memory. + */ + else + RTAsn1ContentFree(pAsn1Core); + return VINF_SUCCESS; +} + + +RTDECL(void) RTAsn1ContentFree(PRTASN1CORE pAsn1Core) +{ + if (pAsn1Core) + { + pAsn1Core->cb = 0; + if (pAsn1Core->fFlags & RTASN1CORE_F_ALLOCATED_CONTENT) + { + pAsn1Core->fFlags &= ~RTASN1CORE_F_ALLOCATED_CONTENT; + AssertReturnVoid(pAsn1Core->uData.pv); + + PRTASN1MEMCONTENT pHdr = RT_FROM_MEMBER(pAsn1Core->uData.pv, RTASN1MEMCONTENT, au64Content); + RTASN1ALLOCATION Allocation = pHdr->Allocation; + + Allocation.pAllocator->pfnFree(Allocation.pAllocator, &Allocation, pHdr); + Assert(Allocation.cbAllocated == 0); + } + pAsn1Core->uData.pv = NULL; + } +} + + + +/* + * Virtual method table based API. + */ + +RTDECL(void) RTAsn1VtDelete(PRTASN1CORE pThisCore) +{ + if (pThisCore) + { + PCRTASN1COREVTABLE pOps = pThisCore->pOps; + if (pOps) + pOps->pfnDtor(pThisCore); + } +} + + +/** + * Context data passed by RTAsn1VtDeepEnum to it's worker callbacks. + */ +typedef struct RTASN1DEEPENUMCTX +{ + PFNRTASN1ENUMCALLBACK pfnCallback; + void *pvUser; +} RTASN1DEEPENUMCTX; + + +static DECLCALLBACK(int) rtAsn1VtDeepEnumDepthFirst(PRTASN1CORE pThisCore, const char *pszName, uint32_t uDepth, void *pvUser) +{ + AssertReturn(pThisCore, VINF_SUCCESS); + + if (pThisCore->pOps && pThisCore->pOps->pfnEnum) + { + int rc = pThisCore->pOps->pfnEnum(pThisCore, rtAsn1VtDeepEnumDepthFirst, uDepth, pvUser); + if (rc != VINF_SUCCESS) + return rc; + } + + RTASN1DEEPENUMCTX *pCtx = (RTASN1DEEPENUMCTX *)pvUser; + return pCtx->pfnCallback(pThisCore, pszName, uDepth, pCtx->pvUser); +} + + +static DECLCALLBACK(int) rtAsn1VtDeepEnumDepthLast(PRTASN1CORE pThisCore, const char *pszName, uint32_t uDepth, void *pvUser) +{ + AssertReturn(pThisCore, VINF_SUCCESS); + + RTASN1DEEPENUMCTX *pCtx = (RTASN1DEEPENUMCTX *)pvUser; + int rc = pCtx->pfnCallback(pThisCore, pszName, uDepth, pCtx->pvUser); + if (rc == VINF_SUCCESS) + { + if (pThisCore->pOps && pThisCore->pOps->pfnEnum) + rc = pThisCore->pOps->pfnEnum(pThisCore, rtAsn1VtDeepEnumDepthFirst, uDepth, pvUser); + } + return rc; +} + + +RTDECL(int) RTAsn1VtDeepEnum(PRTASN1CORE pThisCore, bool fDepthFirst, uint32_t uDepth, + PFNRTASN1ENUMCALLBACK pfnCallback, void *pvUser) +{ + int rc; + if (RTAsn1Core_IsPresent(pThisCore)) + { + PCRTASN1COREVTABLE pOps = pThisCore->pOps; + if (pOps && pOps->pfnEnum) + { + RTASN1DEEPENUMCTX Ctx; + Ctx.pfnCallback = pfnCallback; + Ctx.pvUser = pvUser; + rc = pOps->pfnEnum(pThisCore, fDepthFirst ? rtAsn1VtDeepEnumDepthFirst : rtAsn1VtDeepEnumDepthLast, uDepth, &Ctx); + } + else + rc = VINF_SUCCESS; + } + else + rc = VINF_SUCCESS; + return rc; +} + + +RTDECL(int) RTAsn1VtClone(PRTASN1CORE pThisCore, PRTASN1CORE pSrcCore, PCRTASN1ALLOCATORVTABLE pAllocator) +{ + AssertPtrReturn(pThisCore, VERR_INVALID_POINTER); + AssertPtrReturn(pSrcCore, VERR_INVALID_POINTER); + AssertPtrReturn(pAllocator, VERR_INVALID_POINTER); + + if (RTAsn1Core_IsPresent(pSrcCore)) + { + AssertPtrReturn(pSrcCore->pOps, VERR_INVALID_POINTER); + AssertPtr(pSrcCore->pOps->pfnClone); + return pSrcCore->pOps->pfnClone(pThisCore, pSrcCore, pAllocator); + } + + RT_ZERO(*pThisCore); + return VINF_SUCCESS; +} + + +RTDECL(int) RTAsn1VtCompare(PCRTASN1CORE pLeftCore, PCRTASN1CORE pRightCore) +{ + int iDiff; + if (RTAsn1Core_IsPresent(pLeftCore)) + { + if (RTAsn1Core_IsPresent(pRightCore)) + { + PCRTASN1COREVTABLE pOps = pLeftCore->pOps; + if (pOps == pRightCore->pOps) + { + AssertPtr(pOps->pfnCompare); + iDiff = pOps->pfnCompare(pLeftCore, pRightCore); + } + else + iDiff = (uintptr_t)pOps < (uintptr_t)pRightCore->pOps ? -1 : 1; + } + else + iDiff = 1; + } + else + iDiff = 0 - (int)RTAsn1Core_IsPresent(pRightCore); + return iDiff; +} + + +RTDECL(int) RTAsn1VtCheckSanity(PCRTASN1CORE pThisCore, uint32_t fFlags, + PRTERRINFO pErrInfo, const char *pszErrorTag) +{ + int rc; + if (RTAsn1Core_IsPresent(pThisCore)) + { + PCRTASN1COREVTABLE pOps = pThisCore->pOps; + if (pOps && pOps->pfnCheckSanity) + rc = pOps->pfnCheckSanity(pThisCore, fFlags, pErrInfo, pszErrorTag); + else if (pOps) + rc = RTErrInfoSetF(pErrInfo, VERR_ASN1_NO_CHECK_SANITY_METHOD, + "%s: Has no pfnCheckSanity function.", pszErrorTag); + else + rc = RTErrInfoSetF(pErrInfo, VERR_ASN1_NO_VTABLE, "%s: Has no Vtable function.", pszErrorTag); + } + else + rc = RTErrInfoSetF(pErrInfo, VERR_ASN1_NOT_PRESENT, "%s: Not present.", pszErrorTag); + return rc; +} + + + +/* + * Dummy ASN.1 object. + */ + +RTDECL(int) RTAsn1Dummy_InitEx(PRTASN1DUMMY pThis) +{ + return RTAsn1Core_InitEx(&pThis->Asn1Core, + UINT32_MAX, + ASN1_TAGCLASS_PRIVATE | ASN1_TAGFLAG_CONSTRUCTED, + NULL, + RTASN1CORE_F_DUMMY); +} + + +/* + * ASN.1 SEQUENCE OF object. + */ + +RTDECL(int) RTAsn1SeqOfCore_Init(PRTASN1SEQOFCORE pThis, PCRTASN1COREVTABLE pVtable) +{ + return RTAsn1Core_InitEx(&pThis->Asn1Core, + ASN1_TAG_SEQUENCE, + ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_CONSTRUCTED, + pVtable, + RTASN1CORE_F_PRESENT); +} + + +RTDECL(int) RTAsn1SeqOfCore_Clone(PRTASN1SEQOFCORE pThis, PCRTASN1COREVTABLE pVtable, PCRTASN1SEQOFCORE pSrc) +{ + AssertReturn(pSrc->Asn1Core.pOps == pVtable, VERR_ASN1_INTERNAL_ERROR_5); + return RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core); +} + + +/* + * ASN.1 SET OF object. + */ + +RTDECL(int) RTAsn1SetOfCore_Init(PRTASN1SETOFCORE pThis, PCRTASN1COREVTABLE pVtable) +{ + return RTAsn1Core_InitEx(&pThis->Asn1Core, + ASN1_TAG_SET, + ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_CONSTRUCTED, + pVtable, + RTASN1CORE_F_PRESENT); +} + + +RTDECL(int) RTAsn1SetOfCore_Clone(PRTASN1SETOFCORE pThis, PCRTASN1COREVTABLE pVtable, PCRTASN1SETOFCORE pSrc) +{ + AssertReturn(pSrc->Asn1Core.pOps == pVtable, VERR_ASN1_INTERNAL_ERROR_5); + return RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core); +} + + +/* + * ASN.1 SEQUENCE object. + */ + +RTDECL(int) RTAsn1SequenceCore_Init(PRTASN1SEQUENCECORE pThis, PCRTASN1COREVTABLE pVtable) +{ + return RTAsn1Core_InitEx(&pThis->Asn1Core, + ASN1_TAG_SEQUENCE, + ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_CONSTRUCTED, + pVtable, + RTASN1CORE_F_PRESENT); +} + + +RTDECL(int) RTAsn1SequenceCore_Clone(PRTASN1SEQUENCECORE pThis, PCRTASN1COREVTABLE pVtable, PCRTASN1SEQUENCECORE pSrc) +{ + AssertReturn(pSrc->Asn1Core.pOps == pVtable, VERR_ASN1_INTERNAL_ERROR_5); + return RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core); +} + + +/* + * ASN.1 SEQUENCE object - only used by SPC, so probably doing something wrong there. + */ + +RTDECL(int) RTAsn1SetCore_Init(PRTASN1SETCORE pThis, PCRTASN1COREVTABLE pVtable) +{ + return RTAsn1Core_InitEx(&pThis->Asn1Core, + ASN1_TAG_SET, + ASN1_TAGCLASS_UNIVERSAL | ASN1_TAGFLAG_CONSTRUCTED, + pVtable, + RTASN1CORE_F_PRESENT); +} + + +RTDECL(int) RTAsn1SetCore_Clone(PRTASN1SETCORE pThis, PCRTASN1COREVTABLE pVtable, PCRTASN1SETCORE pSrc) +{ + AssertReturn(pSrc->Asn1Core.pOps == pVtable, VERR_ASN1_INTERNAL_ERROR_5); + return RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core); +} + + +/* + * ASN.1 Context Tag object. + */ + +RTDECL(int) RTAsn1ContextTagN_Init(PRTASN1CONTEXTTAG pThis, uint32_t uTag, PCRTASN1COREVTABLE pVtable) +{ + return RTAsn1Core_InitEx(&pThis->Asn1Core, + uTag, + ASN1_TAGCLASS_CONTEXT | ASN1_TAGFLAG_CONSTRUCTED, + pVtable, + RTASN1CORE_F_PRESENT); +} + + +RTDECL(int) RTAsn1ContextTagN_Clone(PRTASN1CONTEXTTAG pThis, PCRTASN1CONTEXTTAG pSrc, uint32_t uTag) +{ + Assert(pSrc->Asn1Core.uTag == uTag || !RTASN1CORE_IS_PRESENT(&pSrc->Asn1Core)); RT_NOREF_PV(uTag); + return RTAsn1Core_CloneNoContent(&pThis->Asn1Core, &pSrc->Asn1Core); +} + |