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cryptnet: Lock cache file while accessing it.

This commit is contained in:
Piotr Caban 2013-03-08 11:17:11 +01:00 committed by Alexandre Julliard
parent 81e48cd0fa
commit 4f89321577
1 changed files with 13 additions and 10 deletions
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21
dlls/cryptnet/cryptnet_main.c
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@ -503,24 +503,26 @@ static BOOL CRYPT_GetObjectFromCache(LPCWSTR pszURL, PCRYPT_BLOB_ARRAY pObject,
TRACE("(%s, %p, %p)\n", debugstr_w(pszURL), pObject, pAuxInfo);
ret = GetUrlCacheEntryInfoW(pszURL, NULL, &size);
if (!ret && GetLastError() == ERROR_INSUFFICIENT_BUFFER)
{
RetrieveUrlCacheEntryFileW(pszURL, NULL, &size, 0);
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
return FALSE;
pCacheInfo = CryptMemAlloc(size);
if (pCacheInfo)
ret = TRUE;
else
if (!pCacheInfo)
{
SetLastError(ERROR_OUTOFMEMORY);
return FALSE;
}
if (ret && (ret = GetUrlCacheEntryInfoW(pszURL, pCacheInfo, &size)))
if ((ret = RetrieveUrlCacheEntryFileW(pszURL, pCacheInfo, &size, 0)))
{
FILETIME ft;
GetSystemTimeAsFileTime(&ft);
if (CompareFileTime(&pCacheInfo->ExpireTime, &ft) >= 0)
{
HANDLE hFile = CreateFileW(pCacheInfo->lpszLocalFileName,
GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
HANDLE hFile = CreateFileW(pCacheInfo->lpszLocalFileName, GENERIC_READ,
FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile != INVALID_HANDLE_VALUE)
{
@ -547,6 +549,7 @@ static BOOL CRYPT_GetObjectFromCache(LPCWSTR pszURL, PCRYPT_BLOB_ARRAY pObject,
DeleteUrlCacheEntryW(pszURL);
ret = FALSE;
}
UnlockUrlCacheEntryFileW(pszURL, 0);
}
CryptMemFree(pCacheInfo);
TRACE("returning %d\n", ret);