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crypt32: Explicitly pass array pointer when decoding name constraints' permitted subtrees rather than assuming a particular alignment.

This commit is contained in:
Juan Lang 2009-10-14 12:49:13 -07:00 committed by Alexandre Julliard
parent 07a1750af7
commit ab1376ad6c
1 changed files with 38 additions and 1 deletions
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39
dlls/crypt32/decode.c
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@ -5163,6 +5163,41 @@ static BOOL CRYPT_AsnDecodeSubtree(const BYTE *pbEncoded,
return ret;
}
static BOOL CRYPT_AsnDecodePermittedSubtree(const BYTE *pbEncoded,
DWORD cbEncoded, DWORD dwFlags, void *pvStructInfo, DWORD *pcbStructInfo,
DWORD *pcbDecoded)
{
BOOL ret = TRUE;
struct AsnArrayDescriptor arrayDesc = { 0,
CRYPT_AsnDecodeSubtree, sizeof(CERT_GENERAL_SUBTREE), TRUE,
offsetof(CERT_GENERAL_SUBTREE, Base.u.pwszURL) };
DWORD bytesNeeded;
TRACE("%p, %d, %08x, %p, %d, %p\n", pbEncoded, cbEncoded, dwFlags,
pvStructInfo, *pcbStructInfo, pcbDecoded);
if ((ret = CRYPT_AsnDecodeArrayNoAlloc(&arrayDesc, pbEncoded, cbEncoded,
NULL, NULL, &bytesNeeded, pcbDecoded)))
{
bytesNeeded += MEMBERSIZE(CERT_NAME_CONSTRAINTS_INFO,
cPermittedSubtree, cExcludedSubtree);
if (!pvStructInfo)
*pcbStructInfo = bytesNeeded;
else if ((ret = CRYPT_DecodeEnsureSpace(0, NULL, pvStructInfo,
pcbStructInfo, bytesNeeded)))
{
CERT_NAME_CONSTRAINTS_INFO *info = (CERT_NAME_CONSTRAINTS_INFO *)
((BYTE *)pvStructInfo -
offsetof(CERT_NAME_CONSTRAINTS_INFO, cPermittedSubtree));
ret = CRYPT_AsnDecodeArrayNoAlloc(&arrayDesc, pbEncoded, cbEncoded,
&info->cPermittedSubtree, info->rgPermittedSubtree, &bytesNeeded,
pcbDecoded);
}
}
return ret;
}
static BOOL CRYPT_AsnDecodeSubtreeArray(const BYTE *pbEncoded,
DWORD cbEncoded, DWORD dwFlags, void *pvStructInfo, DWORD *pcbStructInfo,
DWORD *pcbDecoded)
@ -5197,7 +5232,9 @@ static BOOL WINAPI CRYPT_AsnDecodeNameConstraints(DWORD dwCertEncodingType,
struct AsnDecodeSequenceItem items[] = {
{ ASN_CONTEXT | ASN_CONSTRUCTOR | 0,
offsetof(CERT_NAME_CONSTRAINTS_INFO, cPermittedSubtree),
CRYPT_AsnDecodeSubtreeArray, sizeof(struct GenericArray), TRUE, TRUE,
CRYPT_AsnDecodePermittedSubtree,
MEMBERSIZE(CERT_NAME_CONSTRAINTS_INFO, cPermittedSubtree,
cExcludedSubtree), TRUE, TRUE,
offsetof(CERT_NAME_CONSTRAINTS_INFO, rgPermittedSubtree), 0 },
{ ASN_CONTEXT | ASN_CONSTRUCTOR | 1,
offsetof(CERT_NAME_CONSTRAINTS_INFO, cExcludedSubtree),