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crypt32: Use a helper function to find an existing cert by hash.

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This commit is contained in:
Juan Lang 2009-10-28 17:30:50 -07:00 committed by Alexandre Julliard
parent 77472187c9
commit 7b0297769d
1 changed files with 24 additions and 27 deletions
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51
dlls/crypt32/chain.c
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@ -69,6 +69,24 @@ static inline void CRYPT_CloseStores(DWORD cStores, HCERTSTORE *stores)
static const WCHAR rootW[] = { 'R','o','o','t',0 };
/* Finds cert in store by comparing the cert's hashes. */
static PCCERT_CONTEXT CRYPT_FindCertInStore(HCERTSTORE store,
PCCERT_CONTEXT cert)
{
PCCERT_CONTEXT matching = NULL;
BYTE hash[20];
DWORD size = sizeof(hash);
if (CertGetCertificateContextProperty(cert, CERT_HASH_PROP_ID, hash, &size))
{
CRYPT_HASH_BLOB blob = { sizeof(hash), hash };
matching = CertFindCertificateInStore(store, cert->dwCertEncodingType,
0, CERT_FIND_SHA1_HASH, &blob, NULL);
}
return matching;
}
static BOOL CRYPT_CheckRestrictedRoot(HCERTSTORE store)
{
BOOL ret = TRUE;
@ -77,29 +95,15 @@ static BOOL CRYPT_CheckRestrictedRoot(HCERTSTORE store)
{
HCERTSTORE rootStore = CertOpenSystemStoreW(0, rootW);
PCCERT_CONTEXT cert = NULL, check;
BYTE hash[20];
DWORD size;
do {
cert = CertEnumCertificatesInStore(store, cert);
if (cert)
{
size = sizeof(hash);
ret = CertGetCertificateContextProperty(cert, CERT_HASH_PROP_ID,
hash, &size);
if (ret)
{
CRYPT_HASH_BLOB blob = { sizeof(hash), hash };
check = CertFindCertificateInStore(rootStore,
cert->dwCertEncodingType, 0, CERT_FIND_SHA1_HASH, &blob,
NULL);
if (!check)
ret = FALSE;
else
CertFreeCertificateContext(check);
}
if (!(check = CRYPT_FindCertInStore(rootStore, cert)))
ret = FALSE;
else
CertFreeCertificateContext(check);
}
} while (ret && cert);
if (cert)
@ -336,16 +340,9 @@ static void CRYPT_FreeSimpleChain(PCERT_SIMPLE_CHAIN chain)
static void CRYPT_CheckTrustedStatus(HCERTSTORE hRoot,
PCERT_CHAIN_ELEMENT rootElement)
{
BYTE hash[20];
DWORD size = sizeof(hash);
CRYPT_HASH_BLOB blob = { sizeof(hash), hash };
PCCERT_CONTEXT trustedRoot;
PCCERT_CONTEXT trustedRoot = CRYPT_FindCertInStore(hRoot,
rootElement->pCertContext);
CertGetCertificateContextProperty(rootElement->pCertContext,
CERT_HASH_PROP_ID, hash, &size);
trustedRoot = CertFindCertificateInStore(hRoot,
rootElement->pCertContext->dwCertEncodingType, 0, CERT_FIND_SHA1_HASH,
&blob, NULL);
if (!trustedRoot)
rootElement->TrustStatus.dwErrorStatus |=
CERT_TRUST_IS_UNTRUSTED_ROOT;