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wininet: Delete cache directory when cache version doesn't match.

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Piotr Caban 2012-09-26 11:37:55 +02:00 committed by Alexandre Julliard
parent d2e5bb30eb
commit fa0f0630c5
1 changed files with 39 additions and 2 deletions
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39
dlls/wininet/urlcache.c
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@ -60,6 +60,9 @@
WINE_DEFAULT_DEBUG_CHANNEL(wininet); WINE_DEFAULT_DEBUG_CHANNEL(wininet);
static const char urlcache_ver_prefix[] = "WINE URLCache Ver ";
static const char urlcache_ver[] = "0.2012001";
#define ENTRY_START_OFFSET 0x4000 #define ENTRY_START_OFFSET 0x4000
#define DIR_LENGTH 8 #define DIR_LENGTH 8
#define MAX_DIR_NO 0x20 #define MAX_DIR_NO 0x20
@ -337,7 +340,8 @@ static DWORD URLCacheContainer_OpenIndex(URLCACHECONTAINER * pContainer, DWORD b
HASH_CACHEFILE_ENTRY *pHashEntry; HASH_CACHEFILE_ENTRY *pHashEntry;
/* First set some constants and defaults in the header */ /* First set some constants and defaults in the header */
strcpy(pHeader->szSignature, "WINE URLCache Ver 0.2005001"); memcpy(pHeader->szSignature, urlcache_ver_prefix, sizeof(urlcache_ver_prefix)-1);
memcpy(pHeader->szSignature+sizeof(urlcache_ver_prefix)-1, urlcache_ver, sizeof(urlcache_ver)-1);
pHeader->dwFileSize = new_file_size; pHeader->dwFileSize = new_file_size;
pHeader->dwIndexCapacityInBlocks = blocks_no; pHeader->dwIndexCapacityInBlocks = blocks_no;
/* 127MB - taken from default for Windows 2000 */ /* 127MB - taken from default for Windows 2000 */
@ -457,8 +461,41 @@ static DWORD URLCacheContainer_OpenIndex(URLCACHECONTAINER * pContainer, DWORD b
URLCache_PathToObjectName(wszFilePath, '_'); URLCache_PathToObjectName(wszFilePath, '_');
pContainer->hMapping = OpenFileMappingW(FILE_MAP_WRITE, FALSE, wszFilePath); pContainer->hMapping = OpenFileMappingW(FILE_MAP_WRITE, FALSE, wszFilePath);
if (!pContainer->hMapping) if (!pContainer->hMapping)
{
pContainer->hMapping = CreateFileMappingW(hFile, NULL, PAGE_READWRITE, 0, 0, wszFilePath); pContainer->hMapping = CreateFileMappingW(hFile, NULL, PAGE_READWRITE, 0, 0, wszFilePath);
CloseHandle(hFile); CloseHandle(hFile);
/* Validate cache index file on first open */
if (pContainer->hMapping && blocks_no==MIN_BLOCK_NO)
{
URLCACHE_HEADER *pHeader = MapViewOfFile(pContainer->hMapping, FILE_MAP_WRITE, 0, 0, 0);
if (!pHeader)
{
ERR("MapViewOfFile failed (error is %d)\n", GetLastError());
CloseHandle(pContainer->hMapping);
pContainer->hMapping = NULL;
ReleaseMutex(pContainer->hMutex);
return GetLastError();
}
if (!memcmp(pHeader->szSignature, urlcache_ver_prefix, sizeof(urlcache_ver_prefix)-1) &&
memcmp(pHeader->szSignature+sizeof(urlcache_ver_prefix)-1, urlcache_ver, sizeof(urlcache_ver)-1))
{
TRACE("detected wrong version of cache: %s, expected %s\n", pHeader->szSignature, urlcache_ver);
UnmapViewOfFile(pHeader);
FreeUrlCacheSpaceW(pContainer->path, 100, 0);
}
else
{
UnmapViewOfFile(pHeader);
}
}
}
else
{
CloseHandle(hFile);
}
if (!pContainer->hMapping) if (!pContainer->hMapping)
{ {
ERR("Couldn't create file mapping (error is %d)\n", GetLastError()); ERR("Couldn't create file mapping (error is %d)\n", GetLastError());