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wine/dlls/wininet/urlcache.c
Patrik Stridvall ba78aac406 Fixed some issues found by winapi_check.
2003-08-08 21:07:23 +00:00

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/*
* Wininet - Url Cache functions
*
* Copyright 2001,2002 CodeWeavers
* Copyright 2003 Robert Shearman
*
* Eric Kohl
* Aric Stewart
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define COM_NO_WINDOWS_H
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "wininet.h"
#include "winerror.h"
#include "internet.h"
#include "winreg.h"
#include "shlwapi.h"
#include "shlobj.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wininet);
#define ENTRY_START_OFFSET 0x4000
#define DIR_LENGTH 8
#define BLOCKSIZE 128
#define CONTENT_DIRECTORY "\\Content.IE5\\"
#define HASHTABLE_SIZE 448
#define HASHTABLE_BLOCKSIZE 7
#define ALLOCATION_TABLE_OFFSET 0x250
#define ALLOCATION_TABLE_SIZE (0x1000 - ALLOCATION_TABLE_OFFSET)
#define HASHTABLE_NUM_ENTRIES (HASHTABLE_SIZE / HASHTABLE_BLOCKSIZE)
#define DWORD_SIG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
#define URL_SIGNATURE DWORD_SIG('U','R','L',' ')
#define REDR_SIGNATURE DWORD_SIG('R','E','D','R')
#define LEAK_SIGNATURE DWORD_SIG('L','E','A','K')
#define HASH_SIGNATURE DWORD_SIG('H','A','S','H')
#define DWORD_ALIGN(x) ( (DWORD)(((DWORD)(x) + 3) >> 2) << 2)
typedef struct _CACHEFILE_ENTRY
{
/* union
{*/
DWORD dwSignature; /* e.g. "URL " */
/* CHAR szSignature[4];
};*/
DWORD dwBlocksUsed; /* number of 128byte blocks used by this entry */
} CACHEFILE_ENTRY;
typedef struct _URL_CACHEFILE_ENTRY
{
CACHEFILE_ENTRY CacheFileEntry;
FILETIME LastModifiedTime;
FILETIME LastAccessTime;
WORD wExpiredDate; /* expire date in dos format */
WORD wExpiredTime; /* expire time in dos format */
DWORD dwUnknown1; /* usually zero */
DWORD dwSizeLow; /* see INTERNET_CACHE_ENTRY_INFO::dwSizeLow */
DWORD dwSizeHigh; /* see INTERNET_CACHE_ENTRY_INFO::dwSizeHigh */
DWORD dwUnknown2; /* usually zero */
DWORD dwExemptDelta; /* see INTERNET_CACHE_ENTRY_INFO::dwExemptDelta */
DWORD dwUnknown3; /* usually 0x60 */
DWORD dwOffsetUrl; /* usually 0x68 */
BYTE CacheDir; /* index of cache directory this url is stored in */
BYTE Unknown4; /* usually zero */
WORD wUnknown5; /* usually 0x1010 */
DWORD dwOffsetLocalName; /* offset of start of local filename from start of entry */
DWORD CacheEntryType; /* see INTERNET_CACHE_ENTRY_INFO::CacheEntryType */
DWORD dwOffsetHeaderInfo; /* offset of start of header info from start of entry */
DWORD dwHeaderInfoSize;
DWORD dwUnknown6; /* usually zero */
WORD wLastSyncDate; /* last sync date in dos format */
WORD wLastSyncTime; /* last sync time in dos format */
DWORD dwHitRate; /* see INTERNET_CACHE_ENTRY_INFO::dwHitRate */
DWORD dwUseCount; /* see INTERNET_CACHE_ENTRY_INFO::dwUseCount */
WORD wUnknownDate; /* usually same as wLastSyncDate */
WORD wUnknownTime; /* usually same as wLastSyncTime */
DWORD dwUnknown7; /* usually zero */
DWORD dwUnknown8; /* usually zero */
CHAR szSourceUrlName[1]; /* start of url */
/* packing to dword align start of next field */
/* CHAR szLocalFileName[]; (local file name exluding path) */
/* packing to dword align start of next field */
/* CHAR szHeaderInfo[]; (header info) */
} URL_CACHEFILE_ENTRY;
struct _HASH_ENTRY
{
DWORD dwHashKey;
DWORD dwOffsetEntry;
};
typedef struct _HASH_CACHEFILE_ENTRY
{
CACHEFILE_ENTRY CacheFileEntry;
DWORD dwAddressNext;
DWORD dwHashTableNumber;
struct _HASH_ENTRY HashTable[HASHTABLE_SIZE];
} HASH_CACHEFILE_ENTRY;
typedef struct _DIRECTORY_DATA
{
DWORD dwUnknown;
char filename[DIR_LENGTH];
} DIRECTORY_DATA;
typedef struct _URLCACHE_HEADER
{
char szSignature[28];
DWORD dwFileSize;
DWORD dwOffsetFirstHashTable;
DWORD dwIndexCapacityInBlocks;
DWORD dwBlocksInUse; /* is this right? */
DWORD dwUnknown1;
DWORD dwCacheLimitLow; /* disk space limit for cache */
DWORD dwCacheLimitHigh; /* disk space limit for cache */
DWORD dwUnknown4; /* current disk space usage for cache? */
DWORD dwUnknown5; /* current disk space usage for cache? */
DWORD dwUnknown6; /* possibly a flag? */
DWORD dwUnknown7;
BYTE DirectoryCount; /* number of directory_data's */
BYTE Unknown8[3]; /* just padding? */
DIRECTORY_DATA directory_data[1]; /* first directory entry */
} URLCACHE_HEADER, *LPURLCACHE_HEADER;
typedef const URLCACHE_HEADER *LPCURLCACHE_HEADER;
typedef struct _STREAM_HANDLE
{
HANDLE hFile;
CHAR lpszUrl[1];
} STREAM_HANDLE;
/**** File Global Variables ****/
static HANDLE hCacheIndexMapping = NULL; /* handle to file mapping */
static LPSTR szCacheContentPath = NULL; /* path to content index */
static HANDLE hMutex = NULL;
/***********************************************************************
* URLCache_PathToObjectName (Internal)
*
* Converts a path to a name suitable for use as a Win32 object name.
* Replaces '\\' characters in-place with the specified character
* (usually '_' or '!')
*
* RETURNS
* nothing
*
*/
static void URLCache_PathToObjectName(LPSTR lpszPath, char replace)
{
char ch;
for (ch = *lpszPath; (ch = *lpszPath); lpszPath++)
{
if (ch == '\\')
*lpszPath = replace;
}
}
#ifndef CHAR_BIT
#define CHAR_BIT (8 * sizeof(CHAR))
#endif
/***********************************************************************
* URLCache_Allocation_BlockIsFree (Internal)
*
* Is the specified block number free?
*
* RETURNS
* zero if free
* non-zero otherwise
*
*/
static inline BYTE URLCache_Allocation_BlockIsFree(BYTE * AllocationTable, DWORD dwBlockNumber)
{
BYTE mask = 1 << (dwBlockNumber % CHAR_BIT);
return (AllocationTable[dwBlockNumber / CHAR_BIT] & mask) == 0;
}
/***********************************************************************
* URLCache_Allocation_BlockFree (Internal)
*
* Marks the specified block as free
*
* RETURNS
* nothing
*
*/
static inline void URLCache_Allocation_BlockFree(BYTE * AllocationTable, DWORD dwBlockNumber)
{
BYTE mask = ~(1 << (dwBlockNumber % CHAR_BIT));
AllocationTable[dwBlockNumber / CHAR_BIT] &= mask;
}
/***********************************************************************
* URLCache_Allocation_BlockAllocate (Internal)
*
* Marks the specified block as allocated
*
* RETURNS
* nothing
*
*/
static inline void URLCache_Allocation_BlockAllocate(BYTE * AllocationTable, DWORD dwBlockNumber)
{
BYTE mask = 1 << (dwBlockNumber % CHAR_BIT);
AllocationTable[dwBlockNumber / CHAR_BIT] |= mask;
}
/***********************************************************************
* URLCache_FindEntry (Internal)
*
* Finds an entry without using the hash tables
*
* RETURNS
* TRUE if it found the specified entry
* FALSE otherwise
*
*/
static BOOL URLCache_FindEntry(LPCURLCACHE_HEADER pHeader, LPCSTR szUrl, CACHEFILE_ENTRY ** ppEntry)
{
CACHEFILE_ENTRY * pCurrentEntry;
DWORD dwBlockNumber;
BYTE * AllocationTable = (LPBYTE)pHeader + ALLOCATION_TABLE_OFFSET;
for (pCurrentEntry = (CACHEFILE_ENTRY *)((LPBYTE)pHeader + ENTRY_START_OFFSET);
(DWORD)((LPBYTE)pCurrentEntry - (LPBYTE)pHeader) < pHeader->dwFileSize;
pCurrentEntry = (CACHEFILE_ENTRY *)((LPBYTE)pCurrentEntry + pCurrentEntry->dwBlocksUsed * BLOCKSIZE))
{
dwBlockNumber = (DWORD)((LPBYTE)pCurrentEntry - (LPBYTE)pHeader - ENTRY_START_OFFSET) / BLOCKSIZE;
while (URLCache_Allocation_BlockIsFree(AllocationTable, dwBlockNumber))
{
if (dwBlockNumber >= pHeader->dwIndexCapacityInBlocks)
return FALSE;
pCurrentEntry = (CACHEFILE_ENTRY *)((LPBYTE)pCurrentEntry + BLOCKSIZE);
dwBlockNumber = (DWORD)((LPBYTE)pCurrentEntry - (LPBYTE)pHeader - ENTRY_START_OFFSET) / BLOCKSIZE;
}
switch (pCurrentEntry->dwSignature)
{
case URL_SIGNATURE: /* "URL " */
case LEAK_SIGNATURE: /* "LEAK" */
{
URL_CACHEFILE_ENTRY * pUrlEntry = (URL_CACHEFILE_ENTRY *)pCurrentEntry;
if (!strcmp(szUrl, pUrlEntry->szSourceUrlName))
{
*ppEntry = pCurrentEntry;
/* FIXME: should we update the LastAccessTime here? */
return TRUE;
}
}
break;
case HASH_SIGNATURE: /* HASH entries parsed in FindEntryInHash */
case 0xDEADBEEF: /* this is always at offset 0x4000 in URL cache for some reason */
break;
default:
FIXME("Unknown entry %.4s ignored\n", (LPCSTR)&pCurrentEntry->dwSignature);
}
}
return FALSE;
}
/***********************************************************************
* URLCache_OpenIndex (Internal)
*
* Opens the index file and saves mapping handle in hCacheIndexMapping
*
* RETURNS
* TRUE if succeeded
* FALSE if failed
*
*/
static BOOL URLCache_OpenIndex()
{
HANDLE hFile;
CHAR szFullPath[MAX_PATH];
CHAR szFileMappingName[MAX_PATH+10];
CHAR szMutexName[MAX_PATH+1];
DWORD dwFileSize;
if (!szCacheContentPath)
{
szCacheContentPath = (LPSTR)HeapAlloc(GetProcessHeap(), 0, MAX_PATH * sizeof(CHAR));
*szCacheContentPath = '\0';
}
if (*szCacheContentPath == '\0')
{
if (FAILED(SHGetSpecialFolderPathA(NULL, szCacheContentPath, CSIDL_INTERNET_CACHE, TRUE)))
return FALSE;
strcat(szCacheContentPath, CONTENT_DIRECTORY);
}
strcpy(szFullPath, szCacheContentPath);
strcat(szFullPath, "index.dat");
if (hCacheIndexMapping)
return TRUE;
hFile = CreateFileA(szFullPath, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
if (hFile == INVALID_HANDLE_VALUE)
{
FIXME("need to create cache index file\n");
return FALSE;
}
dwFileSize = GetFileSize(hFile, NULL);
if (dwFileSize == INVALID_FILE_SIZE)
return FALSE;
if (dwFileSize == 0)
{
FIXME("need to create cache index file\n");
return FALSE;
}
strcpy(szFileMappingName, szFullPath);
sprintf(szFileMappingName + strlen(szFileMappingName), "\\%lu", dwFileSize);
URLCache_PathToObjectName(szFileMappingName, '_');
hCacheIndexMapping = OpenFileMappingA(FILE_MAP_WRITE, FALSE, szFileMappingName);
if (!hCacheIndexMapping)
hCacheIndexMapping = CreateFileMappingA(hFile, NULL, PAGE_READWRITE, 0, 0, szFileMappingName);
CloseHandle(hFile);
if (!hCacheIndexMapping)
{
ERR("Couldn't create file mapping (error is %ld)\n", GetLastError());
return FALSE;
}
strcpy(szMutexName, szFullPath);
CharLowerA(szMutexName);
URLCache_PathToObjectName(szMutexName, '!');
strcat(szMutexName, "!");
if ((hMutex = CreateMutexA(NULL, FALSE, szMutexName)) == NULL)
{
ERR("couldn't create mutex (error is %ld)\n", GetLastError());
CloseHandle(hCacheIndexMapping);
return FALSE;
}
return TRUE;
}
/***********************************************************************
* URLCache_CloseIndex (Internal)
*
* Closes the index
*
* RETURNS
* nothing
*
*/
#if 0 /* not used at the moment */
static BOOL URLCache_CloseIndex()
{
return CloseHandle(hCacheIndexMapping);
}
#endif
/***********************************************************************
* URLCache_FindFirstFreeEntry (Internal)
*
* Finds and allocates the first block of free space big enough and
* sets ppEntry to point to it.
*
* RETURNS
* TRUE if it had enough space
* FALSE if it couldn't find enough space
*
*/
static BOOL URLCache_FindFirstFreeEntry(URLCACHE_HEADER * pHeader, DWORD dwBlocksNeeded, CACHEFILE_ENTRY ** ppEntry)
{
LPBYTE AllocationTable = (LPBYTE)pHeader + ALLOCATION_TABLE_OFFSET;
DWORD dwBlockNumber;
DWORD dwFreeCounter;
for (dwBlockNumber = 0; dwBlockNumber < pHeader->dwIndexCapacityInBlocks; dwBlockNumber++)
{
for (dwFreeCounter = 0;
dwFreeCounter < dwBlocksNeeded &&
dwFreeCounter + dwBlockNumber < pHeader->dwIndexCapacityInBlocks &&
URLCache_Allocation_BlockIsFree(AllocationTable, dwBlockNumber + dwFreeCounter);
dwFreeCounter++)
TRACE("Found free block at no. %ld (0x%lx)\n", dwBlockNumber, ENTRY_START_OFFSET + dwBlockNumber * BLOCKSIZE);
if (dwFreeCounter == dwBlocksNeeded)
{
DWORD index;
TRACE("Found free blocks starting at no. %ld (0x%lx)\n", dwBlockNumber, ENTRY_START_OFFSET + dwBlockNumber * BLOCKSIZE);
for (index = 0; index < dwBlocksNeeded; index++)
URLCache_Allocation_BlockAllocate(AllocationTable, dwBlockNumber + index);
*ppEntry = (CACHEFILE_ENTRY *)((LPBYTE)pHeader + ENTRY_START_OFFSET + dwBlockNumber * BLOCKSIZE);
(*ppEntry)->dwBlocksUsed = dwBlocksNeeded;
return TRUE;
}
}
return FALSE;
}
/***********************************************************************
* URLCache_DeleteEntry (Internal)
*
* Deletes the specified entry and frees the space allocated to it
*
* RETURNS
* TRUE if it succeeded
* FALSE if it failed
*
*/
static BOOL URLCache_DeleteEntry(CACHEFILE_ENTRY * pEntry)
{
ZeroMemory(pEntry, pEntry->dwBlocksUsed * BLOCKSIZE);
return TRUE;
}
/***********************************************************************
* URLCache_LockIndex (Internal)
*
*/
static LPURLCACHE_HEADER URLCache_LockIndex()
{
BYTE index;
LPVOID pIndexData = MapViewOfFile(hCacheIndexMapping, FILE_MAP_WRITE, 0, 0, 0);
URLCACHE_HEADER * pHeader = (URLCACHE_HEADER *)pIndexData;
if (!pIndexData)
return FALSE;
TRACE("Signature: %s, file size: %ld bytes\n", pHeader->szSignature, pHeader->dwFileSize);
for (index = 0; index < pHeader->DirectoryCount; index++)
{
TRACE("Directory[%d] = \"%.8s\"\n", index, pHeader->directory_data[index].filename);
}
/* acquire mutex */
WaitForSingleObject(hMutex, INFINITE);
return pHeader;
}
/***********************************************************************
* URLCache_UnlockIndex (Internal)
*
*/
static BOOL URLCache_UnlockIndex(LPURLCACHE_HEADER pHeader)
{
/* release mutex */
ReleaseMutex(hMutex);
return UnmapViewOfFile(pHeader);
}
/***********************************************************************
* URLCache_LocalFileNameToPath (Internal)
*
* Copies the full path to the specified buffer given the local file
* name and the index of the directory it is in. Always sets value in
* lpBufferSize to the required buffer size.
*
* RETURNS
* TRUE if the buffer was big enough
* FALSE if the buffer was too small
*
*/
static BOOL URLCache_LocalFileNameToPath(LPCURLCACHE_HEADER pHeader, LPCSTR szLocalFileName, BYTE Directory, LPSTR szPath, LPLONG lpBufferSize)
{
LONG nRequired;
if (Directory >= pHeader->DirectoryCount)
{
*lpBufferSize = 0;
return FALSE;
}
nRequired = (strlen(szCacheContentPath) + DIR_LENGTH + strlen(szLocalFileName) + 1) * sizeof(CHAR);
if (nRequired < *lpBufferSize)
{
strcpy(szPath, szCacheContentPath);
strncat(szPath, pHeader->directory_data[Directory].filename, DIR_LENGTH);
strcat(szPath, "\\");
strcat(szPath, szLocalFileName);
*lpBufferSize = nRequired;
return TRUE;
}
*lpBufferSize = nRequired;
return FALSE;
}
/***********************************************************************
* URLCache_CopyEntry (Internal)
*
* Copies an entry from the cache index file to the Win32 structure
*
* RETURNS
* TRUE if the buffer was big enough
* FALSE if the buffer was too small
*
*/
static BOOL URLCache_CopyEntry(LPCURLCACHE_HEADER pHeader, LPINTERNET_CACHE_ENTRY_INFOA lpCacheEntryInfo, LPDWORD lpdwBufferSize, URL_CACHEFILE_ENTRY * pUrlEntry)
{
int lenUrl = strlen(pUrlEntry->szSourceUrlName);
DWORD dwRequiredSize = sizeof(*lpCacheEntryInfo);
LONG nLocalFilePathSize;
LPSTR lpszLocalFileName;
if (*lpdwBufferSize >= dwRequiredSize)
{
lpCacheEntryInfo->lpHeaderInfo = NULL;
lpCacheEntryInfo->lpszFileExtension = NULL;
lpCacheEntryInfo->lpszLocalFileName = NULL;
lpCacheEntryInfo->lpszSourceUrlName = NULL;
lpCacheEntryInfo->CacheEntryType = pUrlEntry->CacheEntryType;
lpCacheEntryInfo->u.dwExemptDelta = pUrlEntry->dwExemptDelta;
lpCacheEntryInfo->dwHeaderInfoSize = pUrlEntry->dwHeaderInfoSize;
lpCacheEntryInfo->dwHitRate = pUrlEntry->dwHitRate;
lpCacheEntryInfo->dwSizeHigh = pUrlEntry->dwSizeHigh;
lpCacheEntryInfo->dwSizeLow = pUrlEntry->dwSizeLow;
lpCacheEntryInfo->dwStructSize = sizeof(*lpCacheEntryInfo);
lpCacheEntryInfo->dwUseCount = pUrlEntry->dwUseCount;
DosDateTimeToFileTime(pUrlEntry->wExpiredDate, pUrlEntry->wExpiredTime, &lpCacheEntryInfo->ExpireTime);
lpCacheEntryInfo->LastAccessTime.dwHighDateTime = pUrlEntry->LastAccessTime.dwHighDateTime;
lpCacheEntryInfo->LastAccessTime.dwLowDateTime = pUrlEntry->LastAccessTime.dwLowDateTime;
lpCacheEntryInfo->LastModifiedTime.dwHighDateTime = pUrlEntry->LastModifiedTime.dwHighDateTime;
lpCacheEntryInfo->LastModifiedTime.dwLowDateTime = pUrlEntry->LastModifiedTime.dwLowDateTime;
DosDateTimeToFileTime(pUrlEntry->wLastSyncDate, pUrlEntry->wLastSyncTime, &lpCacheEntryInfo->LastSyncTime);
}
if ((dwRequiredSize % 4) && (dwRequiredSize < *lpdwBufferSize))
ZeroMemory((LPBYTE)lpCacheEntryInfo + dwRequiredSize, 4 - (dwRequiredSize % 4));
dwRequiredSize = DWORD_ALIGN(dwRequiredSize);
dwRequiredSize += lenUrl + 1;
if (*lpdwBufferSize >= dwRequiredSize)
{
lpCacheEntryInfo->lpszSourceUrlName = (LPSTR)lpCacheEntryInfo + dwRequiredSize - lenUrl - 1;
strcpy(lpCacheEntryInfo->lpszSourceUrlName, pUrlEntry->szSourceUrlName);
}
if ((dwRequiredSize % 4) && (dwRequiredSize < *lpdwBufferSize))
ZeroMemory((LPBYTE)lpCacheEntryInfo + dwRequiredSize, 4 - (dwRequiredSize % 4));
dwRequiredSize = DWORD_ALIGN(dwRequiredSize);
lpszLocalFileName = (LPSTR)lpCacheEntryInfo + dwRequiredSize;
nLocalFilePathSize = *lpdwBufferSize - dwRequiredSize;
if (URLCache_LocalFileNameToPath(pHeader, (LPSTR)pUrlEntry + pUrlEntry->dwOffsetLocalName, pUrlEntry->CacheDir, lpszLocalFileName, &nLocalFilePathSize))
{
lpCacheEntryInfo->lpszLocalFileName = lpszLocalFileName;
}
dwRequiredSize += nLocalFilePathSize;
if ((dwRequiredSize % 4) && (dwRequiredSize < *lpdwBufferSize))
ZeroMemory((LPBYTE)lpCacheEntryInfo + dwRequiredSize, 4 - (dwRequiredSize % 4));
dwRequiredSize = DWORD_ALIGN(dwRequiredSize);
dwRequiredSize += pUrlEntry->dwHeaderInfoSize + 1;
if (*lpdwBufferSize >= dwRequiredSize)
{
lpCacheEntryInfo->lpHeaderInfo = (LPSTR)lpCacheEntryInfo + dwRequiredSize - pUrlEntry->dwHeaderInfoSize - 1;
memcpy(lpCacheEntryInfo->lpHeaderInfo, (LPSTR)pUrlEntry + pUrlEntry->dwOffsetHeaderInfo, pUrlEntry->dwHeaderInfoSize);
((LPBYTE)lpCacheEntryInfo)[dwRequiredSize - 1] = '\0';
}
if ((dwRequiredSize % 4) && (dwRequiredSize < *lpdwBufferSize))
ZeroMemory((LPBYTE)lpCacheEntryInfo + dwRequiredSize, 4 - (dwRequiredSize % 4));
dwRequiredSize = DWORD_ALIGN(dwRequiredSize);
if (dwRequiredSize > *lpdwBufferSize)
{
*lpdwBufferSize = dwRequiredSize;
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return FALSE;
}
*lpdwBufferSize = dwRequiredSize;
return TRUE;
}
/***********************************************************************
* URLCache_HashKey (Internal)
*
* Returns the hash key for a given string
*
* RETURNS
* hash key for the string
*
*/
static DWORD URLCache_HashKey(LPCSTR lpszKey)
{
/* NOTE: this uses the same lookup table as SHLWAPI.UrlHash{A,W}
* but the algorithm and result are not the same!
*/
static const unsigned char lookupTable[256] =
{
0x01, 0x0E, 0x6E, 0x19, 0x61, 0xAE, 0x84, 0x77,
0x8A, 0xAA, 0x7D, 0x76, 0x1B, 0xE9, 0x8C, 0x33,
0x57, 0xC5, 0xB1, 0x6B, 0xEA, 0xA9, 0x38, 0x44,
0x1E, 0x07, 0xAD, 0x49, 0xBC, 0x28, 0x24, 0x41,
0x31, 0xD5, 0x68, 0xBE, 0x39, 0xD3, 0x94, 0xDF,
0x30, 0x73, 0x0F, 0x02, 0x43, 0xBA, 0xD2, 0x1C,
0x0C, 0xB5, 0x67, 0x46, 0x16, 0x3A, 0x4B, 0x4E,
0xB7, 0xA7, 0xEE, 0x9D, 0x7C, 0x93, 0xAC, 0x90,
0xB0, 0xA1, 0x8D, 0x56, 0x3C, 0x42, 0x80, 0x53,
0x9C, 0xF1, 0x4F, 0x2E, 0xA8, 0xC6, 0x29, 0xFE,
0xB2, 0x55, 0xFD, 0xED, 0xFA, 0x9A, 0x85, 0x58,
0x23, 0xCE, 0x5F, 0x74, 0xFC, 0xC0, 0x36, 0xDD,
0x66, 0xDA, 0xFF, 0xF0, 0x52, 0x6A, 0x9E, 0xC9,
0x3D, 0x03, 0x59, 0x09, 0x2A, 0x9B, 0x9F, 0x5D,
0xA6, 0x50, 0x32, 0x22, 0xAF, 0xC3, 0x64, 0x63,
0x1A, 0x96, 0x10, 0x91, 0x04, 0x21, 0x08, 0xBD,
0x79, 0x40, 0x4D, 0x48, 0xD0, 0xF5, 0x82, 0x7A,
0x8F, 0x37, 0x69, 0x86, 0x1D, 0xA4, 0xB9, 0xC2,
0xC1, 0xEF, 0x65, 0xF2, 0x05, 0xAB, 0x7E, 0x0B,
0x4A, 0x3B, 0x89, 0xE4, 0x6C, 0xBF, 0xE8, 0x8B,
0x06, 0x18, 0x51, 0x14, 0x7F, 0x11, 0x5B, 0x5C,
0xFB, 0x97, 0xE1, 0xCF, 0x15, 0x62, 0x71, 0x70,
0x54, 0xE2, 0x12, 0xD6, 0xC7, 0xBB, 0x0D, 0x20,
0x5E, 0xDC, 0xE0, 0xD4, 0xF7, 0xCC, 0xC4, 0x2B,
0xF9, 0xEC, 0x2D, 0xF4, 0x6F, 0xB6, 0x99, 0x88,
0x81, 0x5A, 0xD9, 0xCA, 0x13, 0xA5, 0xE7, 0x47,
0xE6, 0x8E, 0x60, 0xE3, 0x3E, 0xB3, 0xF6, 0x72,
0xA2, 0x35, 0xA0, 0xD7, 0xCD, 0xB4, 0x2F, 0x6D,
0x2C, 0x26, 0x1F, 0x95, 0x87, 0x00, 0xD8, 0x34,
0x3F, 0x17, 0x25, 0x45, 0x27, 0x75, 0x92, 0xB8,
0xA3, 0xC8, 0xDE, 0xEB, 0xF8, 0xF3, 0xDB, 0x0A,
0x98, 0x83, 0x7B, 0xE5, 0xCB, 0x4C, 0x78, 0xD1
};
BYTE key[4];
int i;
int subscript[sizeof(key) / sizeof(key[0])];
subscript[0] = *lpszKey;
subscript[1] = (char)(*lpszKey + 1);
subscript[2] = (char)(*lpszKey + 2);
subscript[3] = (char)(*lpszKey + 3);
for (i = 0; i < sizeof(key) / sizeof(key[0]); i++)
key[i] = lookupTable[i];
for (lpszKey++; *lpszKey && ((lpszKey[0] != '/') || (lpszKey[1] != 0)); lpszKey++)
{
for (i = 0; i < sizeof(key) / sizeof(key[0]); i++)
key[i] = lookupTable[*lpszKey ^ key[i]];
}
return *(DWORD *)key;
}
static inline HASH_CACHEFILE_ENTRY * URLCache_HashEntryFromOffset(LPCURLCACHE_HEADER pHeader, DWORD dwOffset)
{
return (HASH_CACHEFILE_ENTRY *)((LPBYTE)pHeader + dwOffset);
}
/***********************************************************************
* URLCache_FindEntryInHash (Internal)
*
* Searches all the hash tables in the index for the given URL and
* returns the entry, if it was found, in ppEntry
*
* RETURNS
* TRUE if the entry was found
* FALSE if the entry could not be found
*
*/
static BOOL URLCache_FindEntryInHash(LPCURLCACHE_HEADER pHeader, LPCSTR lpszUrl, CACHEFILE_ENTRY ** ppEntry)
{
/* structure of hash table:
* 448 entries divided into 64 blocks
* each block therefore contains a chain of 7 key/offset pairs
* how position in table is calculated:
* 1. the url is hashed in helper function
* 2. the key % 64 * 8 is the offset
* 3. the key in the hash table is the hash key aligned to 64
*
* note:
* there can be multiple hash tables in the file and the offset to
* the next one is stored in the header of the hash table
*/
DWORD key = URLCache_HashKey(lpszUrl);
DWORD offset = (key % HASHTABLE_NUM_ENTRIES) * sizeof(struct _HASH_ENTRY);
HASH_CACHEFILE_ENTRY * pHashEntry;
DWORD dwHashTableNumber = 0;
key = (DWORD)(key / HASHTABLE_NUM_ENTRIES) * HASHTABLE_NUM_ENTRIES;
for (pHashEntry = URLCache_HashEntryFromOffset(pHeader, pHeader->dwOffsetFirstHashTable);
((DWORD)((LPBYTE)pHashEntry - (LPBYTE)pHeader) >= ENTRY_START_OFFSET) && ((DWORD)((LPBYTE)pHashEntry - (LPBYTE)pHeader) < pHeader->dwFileSize);
pHashEntry = URLCache_HashEntryFromOffset(pHeader, pHashEntry->dwAddressNext))
{
int i;
if (pHashEntry->dwHashTableNumber != dwHashTableNumber++)
{
ERR("Error: not right hash table number (%ld) expected %ld\n", pHashEntry->dwHashTableNumber, dwHashTableNumber);
continue;
}
/* make sure that it is in fact a hash entry */
if (pHashEntry->CacheFileEntry.dwSignature != HASH_SIGNATURE)
{
ERR("Error: not right signature (\"%.4s\") - expected \"HASH\"\n", (LPCSTR)&pHashEntry->CacheFileEntry.dwSignature);
continue;
}
for (i = 0; i < HASHTABLE_BLOCKSIZE; i++)
{
struct _HASH_ENTRY * pHashElement = &pHashEntry->HashTable[offset + i];
if (key == (DWORD)(pHashElement->dwHashKey / HASHTABLE_NUM_ENTRIES) * HASHTABLE_NUM_ENTRIES)
{
*ppEntry = (CACHEFILE_ENTRY *)((LPBYTE)pHeader + pHashElement->dwOffsetEntry);
return TRUE;
}
}
}
return FALSE;
}
/***********************************************************************
* URLCache_HashEntrySetUse (Internal)
*
* Searches all the hash tables in the index for the given URL and
* sets the use count (stored or'ed with key)
*
* RETURNS
* TRUE if the entry was found
* FALSE if the entry could not be found
*
*/
static BOOL URLCache_HashEntrySetUse(LPCURLCACHE_HEADER pHeader, LPCSTR lpszUrl, DWORD dwUseCount)
{
/* see URLCache_FindEntryInHash for structure of hash tables */
DWORD key = URLCache_HashKey(lpszUrl);
DWORD offset = (key % HASHTABLE_NUM_ENTRIES) * sizeof(struct _HASH_ENTRY);
HASH_CACHEFILE_ENTRY * pHashEntry;
DWORD dwHashTableNumber = 0;
if (dwUseCount >= HASHTABLE_NUM_ENTRIES)
{
ERR("don't know what to do when use count exceeds %d, guessing\n", HASHTABLE_NUM_ENTRIES);
dwUseCount = HASHTABLE_NUM_ENTRIES - 1;
}
key = (DWORD)(key / HASHTABLE_NUM_ENTRIES) * HASHTABLE_BLOCKSIZE;
for (pHashEntry = URLCache_HashEntryFromOffset(pHeader, pHeader->dwOffsetFirstHashTable);
((DWORD)((LPBYTE)pHashEntry - (LPBYTE)pHeader) >= ENTRY_START_OFFSET) && ((DWORD)((LPBYTE)pHashEntry - (LPBYTE)pHeader) < pHeader->dwFileSize);
pHashEntry = URLCache_HashEntryFromOffset(pHeader, pHashEntry->dwAddressNext))
{
int i;
if (pHashEntry->dwHashTableNumber != dwHashTableNumber++)
{
ERR("not right hash table number (%ld) expected %ld\n", pHashEntry->dwHashTableNumber, dwHashTableNumber);
continue;
}
/* make sure that it is in fact a hash entry */
if (pHashEntry->CacheFileEntry.dwSignature != HASH_SIGNATURE)
{
ERR("not right signature (\"%.4s\") - expected \"HASH\"\n", (LPCSTR)&pHashEntry->CacheFileEntry.dwSignature);
continue;
}
for (i = 0; i < 7; i++)
{
struct _HASH_ENTRY * pHashElement = &pHashEntry->HashTable[offset + i];
if (key == (DWORD)(pHashElement->dwHashKey / HASHTABLE_NUM_ENTRIES) * HASHTABLE_NUM_ENTRIES)
{
pHashElement->dwOffsetEntry = dwUseCount | (DWORD)(pHashElement->dwHashKey / HASHTABLE_NUM_ENTRIES) * HASHTABLE_NUM_ENTRIES;
return TRUE;
}
}
}
return FALSE;
}
/***********************************************************************
* URLCache_AddEntryToHash (Internal)
*
* Searches all the hash tables for a free slot based on the offset
* generated from the hash key. If a free slot is found, the offset and
* key are entered into the hash table.
*
* RETURNS
* TRUE if the entry was added
* FALSE if the entry could not be added
*
*/
static BOOL URLCache_AddEntryToHash(LPCURLCACHE_HEADER pHeader, LPCSTR lpszUrl, DWORD dwOffsetEntry)
{
/* see URLCache_FindEntryInHash for structure of hash tables */
DWORD key = URLCache_HashKey(lpszUrl);
DWORD offset = (key % HASHTABLE_NUM_ENTRIES) * sizeof(struct _HASH_ENTRY);
HASH_CACHEFILE_ENTRY * pHashEntry;
DWORD dwHashTableNumber = 0;
key = (DWORD)(key / HASHTABLE_NUM_ENTRIES) * HASHTABLE_NUM_ENTRIES;
for (pHashEntry = URLCache_HashEntryFromOffset(pHeader, pHeader->dwOffsetFirstHashTable);
((DWORD)((LPBYTE)pHashEntry - (LPBYTE)pHeader) >= ENTRY_START_OFFSET) && ((DWORD)((LPBYTE)pHashEntry - (LPBYTE)pHeader) < pHeader->dwFileSize);
pHashEntry = URLCache_HashEntryFromOffset(pHeader, pHashEntry->dwAddressNext))
{
int i;
if (pHashEntry->dwHashTableNumber != dwHashTableNumber++)
{
ERR("not right hash table number (%ld) expected %ld\n", pHashEntry->dwHashTableNumber, dwHashTableNumber);
break;
}
/* make sure that it is in fact a hash entry */
if (pHashEntry->CacheFileEntry.dwSignature != HASH_SIGNATURE)
{
ERR("not right signature (\"%.4s\") - expected \"HASH\"\n", (LPCSTR)&pHashEntry->CacheFileEntry.dwSignature);
break;
}
for (i = 0; i < 7; i++)
{
struct _HASH_ENTRY * pHashElement = &pHashEntry->HashTable[offset + i];
if (pHashElement->dwHashKey == 3 /* FIXME: just 3? */) /* if the slot is free */
{
pHashElement->dwHashKey = key;
pHashElement->dwOffsetEntry = dwOffsetEntry;
return TRUE;
}
}
}
FIXME("need to create another hash table\n");
return FALSE;
}
/***********************************************************************
* GetUrlCacheEntryInfoExA (WININET.@)
*
*/
BOOL WINAPI GetUrlCacheEntryInfoExA(
LPCSTR lpszUrl,
LPINTERNET_CACHE_ENTRY_INFOA lpCacheEntryInfo,
LPDWORD lpdwCacheEntryInfoBufSize,
LPSTR lpszReserved,
LPDWORD lpdwReserved,
LPVOID lpReserved,
DWORD dwFlags)
{
TRACE("(%s, %p, %p, %p, %p, %p, %lx)\n",
debugstr_a(lpszUrl),
lpCacheEntryInfo,
lpdwCacheEntryInfoBufSize,
lpszReserved,
lpdwReserved,
lpReserved,
dwFlags);
if ((lpszReserved != NULL) ||
(lpdwReserved != NULL) ||
(lpReserved != NULL))
{
ERR("Reserved value was not 0\n");
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (dwFlags != 0)
FIXME("Undocumented flag(s): %lx\n", dwFlags);
return GetUrlCacheEntryInfoA(lpszUrl, lpCacheEntryInfo, lpdwCacheEntryInfoBufSize);
}
/***********************************************************************
* GetUrlCacheEntryInfoA (WININET.@)
*
*/
BOOL WINAPI GetUrlCacheEntryInfoA(
IN LPCSTR lpszUrlName,
IN LPINTERNET_CACHE_ENTRY_INFOA lpCacheEntryInfo,
IN OUT LPDWORD lpdwCacheEntryInfoBufferSize
)
{
LPURLCACHE_HEADER pHeader;
CACHEFILE_ENTRY * pEntry;
URL_CACHEFILE_ENTRY * pUrlEntry;
if (!URLCache_OpenIndex())
return FALSE;
if (!(pHeader = URLCache_LockIndex()))
return FALSE;
if (!URLCache_FindEntryInHash(pHeader, lpszUrlName, &pEntry))
{
if (!URLCache_FindEntry(pHeader, lpszUrlName, &pEntry))
{
URLCache_UnlockIndex(pHeader);
WARN("entry %s not found!\n", debugstr_a(lpszUrlName));
SetLastError(ERROR_FILE_NOT_FOUND);
return FALSE;
}
}
/* FIXME: check signature */
pUrlEntry = (URL_CACHEFILE_ENTRY *)pEntry;
TRACE("Found URL: %s\n", pUrlEntry->szSourceUrlName);
TRACE("Header info: %s\n", (LPBYTE)pUrlEntry + pUrlEntry->dwOffsetHeaderInfo);
if (!URLCache_CopyEntry(pHeader, lpCacheEntryInfo, lpdwCacheEntryInfoBufferSize, pUrlEntry))
{
URLCache_UnlockIndex(pHeader);
return FALSE;
}
TRACE("Local File Name: %s\n", lpCacheEntryInfo->lpszLocalFileName);
URLCache_UnlockIndex(pHeader);
return TRUE;
}
/***********************************************************************
* RetrieveUrlCacheEntryFileA (WININET.@)
*
*/
BOOL WINAPI RetrieveUrlCacheEntryFileA(
IN LPCSTR lpszUrlName,
OUT LPINTERNET_CACHE_ENTRY_INFOA lpCacheEntryInfo,
IN OUT LPDWORD lpdwCacheEntryInfoBufferSize,
IN DWORD dwReserved
)
{
LPURLCACHE_HEADER pHeader;
CACHEFILE_ENTRY * pEntry;
URL_CACHEFILE_ENTRY * pUrlEntry;
if (!URLCache_OpenIndex())
return FALSE;
if (!(pHeader = URLCache_LockIndex()))
return FALSE;
if (!URLCache_FindEntryInHash(pHeader, lpszUrlName, &pEntry))
{
if (!URLCache_FindEntry(pHeader, lpszUrlName, &pEntry))
{
URLCache_UnlockIndex(pHeader);
TRACE("entry %s not found!\n", lpszUrlName);
SetLastError(ERROR_FILE_NOT_FOUND);
return FALSE;
}
}
/* FIXME: check signature */
pUrlEntry = (URL_CACHEFILE_ENTRY *)pEntry;
TRACE("Found URL: %s\n", pUrlEntry->szSourceUrlName);
TRACE("Header info: %s\n", (LPBYTE)pUrlEntry + pUrlEntry->dwOffsetHeaderInfo);
pUrlEntry->dwHitRate++;
pUrlEntry->dwUseCount++;
URLCache_HashEntrySetUse(pHeader, lpszUrlName, pUrlEntry->dwUseCount);
if (!URLCache_CopyEntry(pHeader, lpCacheEntryInfo, lpdwCacheEntryInfoBufferSize, pUrlEntry))
{
URLCache_UnlockIndex(pHeader);
return FALSE;
}
TRACE("Local File Name: %s\n", lpCacheEntryInfo->lpszLocalFileName);
URLCache_UnlockIndex(pHeader);
return TRUE;
}
/***********************************************************************
* UnlockUrlCacheEntryFileA (WININET.@)
*
*/
BOOL WINAPI UnlockUrlCacheEntryFileA(
IN LPCSTR lpszUrlName,
IN DWORD dwReserved
)
{
LPURLCACHE_HEADER pHeader;
CACHEFILE_ENTRY * pEntry;
URL_CACHEFILE_ENTRY * pUrlEntry;
if (dwReserved)
{
ERR("dwReserved != 0\n");
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (!URLCache_OpenIndex())
return FALSE;
if (!(pHeader = URLCache_LockIndex()))
return FALSE;
if (!URLCache_FindEntryInHash(pHeader, lpszUrlName, &pEntry))
{
if (!URLCache_FindEntry(pHeader, lpszUrlName, &pEntry))
{
URLCache_UnlockIndex(pHeader);
TRACE("entry %s not found!\n", lpszUrlName);
SetLastError(ERROR_FILE_NOT_FOUND);
return FALSE;
}
}
/* FIXME: check signature */
pUrlEntry = (URL_CACHEFILE_ENTRY *)pEntry;
if (pUrlEntry->dwUseCount == 0)
{
URLCache_UnlockIndex(pHeader);
return FALSE;
}
pUrlEntry->dwUseCount--;
URLCache_HashEntrySetUse(pHeader, lpszUrlName, pUrlEntry->dwUseCount);
URLCache_UnlockIndex(pHeader);
return TRUE;
}
/***********************************************************************
* CreateUrlCacheEntryA (WININET.@)
*
*/
BOOL WINAPI CreateUrlCacheEntryA(
IN LPCSTR lpszUrlName,
IN DWORD dwExpectedFileSize,
IN LPCSTR lpszFileExtension,
OUT LPSTR lpszFileName,
IN DWORD dwReserved
)
{
LPURLCACHE_HEADER pHeader;
CHAR szFile[MAX_PATH];
CHAR szExtension[MAX_PATH];
LPCSTR lpszUrlPart;
LPCSTR lpszUrlEnd;
LPCSTR lpszFileNameExtension;
LPSTR lpszFileNameNoPath;
int i;
int countnoextension;
BYTE CacheDir;
LONG lBufferSize = MAX_PATH * sizeof(CHAR);
BOOL bFound = FALSE;
int count;
if (dwReserved)
{
ERR("dwReserved != 0\n");
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
for (lpszUrlEnd = lpszUrlName; *lpszUrlEnd; lpszUrlEnd++)
;
if (((lpszUrlEnd - lpszUrlName) > 1) && (*(lpszUrlEnd - 1) == '/'))
lpszUrlEnd--;
for (lpszUrlPart = lpszUrlEnd;
(lpszUrlPart >= lpszUrlName);
lpszUrlPart--)
{
if ((*lpszUrlPart == '/') && ((lpszUrlEnd - lpszUrlPart) > 1))
{
bFound = TRUE;
lpszUrlPart++;
break;
}
}
if (!strcmp(lpszUrlPart, "www"))
{
lpszUrlPart += strlen("www");
}
count = lpszUrlEnd - lpszUrlPart;
if (bFound && (count < MAX_PATH))
{
memcpy(szFile, lpszUrlPart, count * sizeof(CHAR));
szFile[count] = '\0';
/* FIXME: get rid of illegal characters like \, / and : */
}
else
{
FIXME("need to generate a random filename");
}
TRACE("File name: %s\n", szFile);
if (!URLCache_OpenIndex())
return FALSE;
if (!(pHeader = URLCache_LockIndex()))
return FALSE;
CacheDir = (BYTE)(rand() % pHeader->DirectoryCount);
URLCache_LocalFileNameToPath(pHeader, szFile, CacheDir, lpszFileName, &lBufferSize);
URLCache_UnlockIndex(pHeader);
lpszFileNameNoPath = lpszFileName + strlen(szCacheContentPath) + DIR_LENGTH + 1;
countnoextension = strlen(lpszFileNameNoPath);
lpszFileNameExtension = PathFindExtensionA(lpszFileNameNoPath);
if (lpszFileNameExtension)
countnoextension -= strlen(lpszFileNameExtension);
*szExtension = '\0';
if (lpszFileExtension)
{
szExtension[0] = '.';
strcpy(szExtension+1, lpszFileExtension);
}
for (i = 0; i < 255; i++)
{
HANDLE hFile;
strncpy(lpszFileNameNoPath, szFile, countnoextension);
sprintf(lpszFileNameNoPath + countnoextension, "[%u]%s", i, szExtension);
TRACE("Trying: %s\n", lpszFileName);
hFile = CreateFileA(lpszFileName, GENERIC_READ, 0, NULL, CREATE_NEW, 0, NULL);
if (hFile != INVALID_HANDLE_VALUE)
{
CloseHandle(hFile);
return TRUE;
}
}
return FALSE;
}
/***********************************************************************
* CommitUrlCacheEntryA (WININET.@)
*
*/
BOOL WINAPI CommitUrlCacheEntryA(
IN LPCSTR lpszUrlName,
IN LPCSTR lpszLocalFileName,
IN FILETIME ExpireTime,
IN FILETIME LastModifiedTime,
IN DWORD CacheEntryType,
IN LPBYTE lpHeaderInfo,
IN DWORD dwHeaderSize,
IN LPCSTR lpszFileExtension,
IN LPCSTR dwReserved
)
{
LPURLCACHE_HEADER pHeader;
CACHEFILE_ENTRY * pEntry;
URL_CACHEFILE_ENTRY * pUrlEntry;
DWORD dwBytesNeeded = sizeof(*pUrlEntry) - sizeof(pUrlEntry->szSourceUrlName);
BYTE cDirectory;
BOOL bFound = FALSE;
DWORD dwOffsetLocalFileName;
DWORD dwOffsetHeader;
DWORD dwFileSizeLow;
DWORD dwFileSizeHigh;
HANDLE hFile;
TRACE("(%s, %s, ..., ..., %lx, %p, %ld, %s, %p)\n",
debugstr_a(lpszUrlName),
debugstr_a(lpszLocalFileName),
CacheEntryType,
lpHeaderInfo,
dwHeaderSize,
lpszFileExtension,
dwReserved);
if (dwReserved)
{
ERR("dwReserved != 0\n");
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (lpHeaderInfo == NULL)
{
FIXME("lpHeaderInfo == NULL - will crash at the moment\n");
}
hFile = CreateFileA(lpszLocalFileName, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
if (hFile == INVALID_HANDLE_VALUE)
{
ERR("couldn't open file (error is %ld)\n", GetLastError());
return FALSE;
}
/* Get file size */
dwFileSizeLow = GetFileSize(hFile, &dwFileSizeHigh);
if ((dwFileSizeLow == -1) && (GetLastError() != NO_ERROR))
{
ERR("couldn't get file size (error is %ld)\n", GetLastError());
CloseHandle(hFile);
return FALSE;
}
CloseHandle(hFile);
if (!URLCache_OpenIndex())
return FALSE;
if (!(pHeader = URLCache_LockIndex()))
return FALSE;
if (URLCache_FindEntryInHash(pHeader, lpszUrlName, &pEntry) || URLCache_FindEntry(pHeader, lpszUrlName, &pEntry))
{
URLCache_UnlockIndex(pHeader);
FIXME("entry already in cache - don't know what to do!\n");
SetLastError(ERROR_FILE_NOT_FOUND);
return FALSE;
}
if (memcmp(lpszLocalFileName, szCacheContentPath, strlen(szCacheContentPath)))
{
URLCache_UnlockIndex(pHeader);
ERR("path must begin with cache content path\n");
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
lpszLocalFileName += strlen(szCacheContentPath);
for (cDirectory = 0; cDirectory < pHeader->DirectoryCount; cDirectory++)
{
if (!strncmp(pHeader->directory_data[cDirectory].filename, lpszLocalFileName, DIR_LENGTH))
{
bFound = TRUE;
break;
}
}
if (!bFound)
{
URLCache_UnlockIndex(pHeader);
ERR("cache directory not found in path %s\n", lpszLocalFileName);
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
lpszLocalFileName += (DIR_LENGTH + 1); /* "1234WXYZ\" */
dwOffsetLocalFileName = DWORD_ALIGN(dwBytesNeeded + strlen(lpszUrlName) + 1); /* + 1 for NULL terminating char */
dwOffsetHeader = DWORD_ALIGN(dwOffsetLocalFileName + strlen(lpszLocalFileName) + 1);
dwBytesNeeded = DWORD_ALIGN(dwBytesNeeded + dwHeaderSize);
if (dwBytesNeeded % BLOCKSIZE)
{
dwBytesNeeded -= dwBytesNeeded % BLOCKSIZE;
dwBytesNeeded += BLOCKSIZE;
}
if (!URLCache_FindFirstFreeEntry(pHeader, dwBytesNeeded / BLOCKSIZE, &pEntry))
{
/* we should grow the index file here */
URLCache_UnlockIndex(pHeader);
FIXME("no free entries\n");
return FALSE;
}
/* FindFirstFreeEntry fills in blocks used */
pUrlEntry = (URL_CACHEFILE_ENTRY *)pEntry;
pUrlEntry->CacheFileEntry.dwSignature = URL_SIGNATURE;
pUrlEntry->CacheDir = cDirectory;
pUrlEntry->CacheEntryType = CacheEntryType;
pUrlEntry->dwHeaderInfoSize = dwHeaderSize;
pUrlEntry->dwExemptDelta = 0;
pUrlEntry->dwHitRate = 0;
pUrlEntry->dwOffsetHeaderInfo = dwOffsetHeader;
pUrlEntry->dwOffsetLocalName = dwOffsetLocalFileName;
pUrlEntry->dwOffsetUrl = sizeof(*pUrlEntry) - sizeof(pUrlEntry->szSourceUrlName);
pUrlEntry->dwSizeHigh = 0;
pUrlEntry->dwSizeLow = dwFileSizeLow;
pUrlEntry->dwSizeHigh = dwFileSizeHigh;
pUrlEntry->dwUseCount = 0;
GetSystemTimeAsFileTime(&pUrlEntry->LastAccessTime);
pUrlEntry->LastModifiedTime = LastModifiedTime;
FileTimeToDosDateTime(&pUrlEntry->LastAccessTime, &pUrlEntry->wLastSyncDate, &pUrlEntry->wLastSyncTime);
FileTimeToDosDateTime(&ExpireTime, &pUrlEntry->wExpiredDate, &pUrlEntry->wExpiredTime);
pUrlEntry->wUnknownDate = pUrlEntry->wLastSyncDate;
pUrlEntry->wUnknownTime = pUrlEntry->wLastSyncTime;
/*** Unknowns ***/
pUrlEntry->dwUnknown1 = 0;
pUrlEntry->dwUnknown2 = 0;
pUrlEntry->dwUnknown3 = 0x60;
pUrlEntry->Unknown4 = 0;
pUrlEntry->wUnknown5 = 0x1010;
pUrlEntry->dwUnknown6 = 0;
pUrlEntry->dwUnknown7 = 0;
pUrlEntry->dwUnknown8 = 0;
strcpy(pUrlEntry->szSourceUrlName, lpszUrlName);
strcpy((LPSTR)((LPBYTE)pUrlEntry + dwOffsetLocalFileName), lpszLocalFileName);
memcpy((LPSTR)((LPBYTE)pUrlEntry + dwOffsetHeader), lpHeaderInfo, dwHeaderSize);
if (!URLCache_AddEntryToHash(pHeader, lpszUrlName, (DWORD)((LPBYTE)pUrlEntry - (LPBYTE)pHeader)))
{
URLCache_UnlockIndex(pHeader);
return FALSE;
}
URLCache_UnlockIndex(pHeader);
return TRUE;
}
BOOL WINAPI ReadUrlCacheEntryStream(
IN HANDLE hUrlCacheStream,
IN DWORD dwLocation,
IN OUT LPVOID lpBuffer,
IN OUT LPDWORD lpdwLen,
IN DWORD dwReserved
)
{
/* Get handle to file from 'stream' */
STREAM_HANDLE * pStream = (STREAM_HANDLE *)hUrlCacheStream;
if (dwReserved != 0)
{
ERR("dwReserved != 0\n");
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (IsBadReadPtr(pStream, sizeof(*pStream)) || IsBadStringPtrA(pStream->lpszUrl, INTERNET_MAX_URL_LENGTH))
{
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
if (SetFilePointer(pStream->hFile, dwLocation, NULL, FILE_CURRENT) == -1)
return FALSE;
return ReadFile(pStream->hFile, lpBuffer, *lpdwLen, lpdwLen, NULL);
}
/***********************************************************************
* RetrieveUrlCacheEntryStreamA (WININET.@)
*
*/
HANDLE WINAPI RetrieveUrlCacheEntryStreamA(
IN LPCSTR lpszUrlName,
OUT LPINTERNET_CACHE_ENTRY_INFOA lpCacheEntryInfo,
IN OUT LPDWORD lpdwCacheEntryInfoBufferSize,
IN BOOL fRandomRead,
IN DWORD dwReserved
)
{
/* NOTE: this is not the same as the way that the native
* version allocates 'stream' handles. I did it this way
* as it is much easier and no applications should depend
* on this behaviour. (Native version appears to allocate
* indices into a table)
*/
STREAM_HANDLE * pStream;
HANDLE hFile;
if (!RetrieveUrlCacheEntryFileA(lpszUrlName,
lpCacheEntryInfo,
lpdwCacheEntryInfoBufferSize,
dwReserved))
{
return NULL;
}
hFile = CreateFileA(lpCacheEntryInfo->lpszLocalFileName,
GENERIC_READ,
FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
fRandomRead ? FILE_FLAG_RANDOM_ACCESS : 0,
NULL);
if (hFile == INVALID_HANDLE_VALUE)
return FALSE;
/* allocate handle storage space */
pStream = (STREAM_HANDLE *)HeapAlloc(GetProcessHeap(), 0, sizeof(STREAM_HANDLE) + strlen(lpszUrlName) * sizeof(CHAR));
if (!pStream)
{
CloseHandle(hFile);
SetLastError(ERROR_OUTOFMEMORY);
return FALSE;
}
pStream->hFile = hFile;
strcpy(pStream->lpszUrl, lpszUrlName);
return (HANDLE)pStream;
}
/***********************************************************************
* UnlockUrlCacheEntryStream (WININET.@)
*
*/
BOOL WINAPI UnlockUrlCacheEntryStream(
IN HANDLE hUrlCacheStream,
IN DWORD dwReserved
)
{
STREAM_HANDLE * pStream = (STREAM_HANDLE *)hUrlCacheStream;
if (dwReserved != 0)
{
ERR("dwReserved != 0\n");
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (IsBadReadPtr(pStream, sizeof(*pStream)) || IsBadStringPtrA(pStream->lpszUrl, INTERNET_MAX_URL_LENGTH))
{
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
if (!UnlockUrlCacheEntryFileA(pStream->lpszUrl, 0))
return FALSE;
/* close file handle */
CloseHandle(pStream->hFile);
/* free allocated space */
HeapFree(GetProcessHeap(), 0, pStream);
return TRUE;
}
/***********************************************************************
* DeleteUrlCacheEntryA (WININET.@)
*
*/
BOOL WINAPI DeleteUrlCacheEntryA(LPCSTR lpszUrlName)
{
LPURLCACHE_HEADER pHeader;
CACHEFILE_ENTRY * pEntry;
DWORD dwStartBlock;
DWORD dwBlock;
BYTE * AllocationTable;
if (!URLCache_OpenIndex())
return FALSE;
if (!(pHeader = URLCache_LockIndex()))
return FALSE;
if (!URLCache_FindEntryInHash(pHeader, lpszUrlName, &pEntry))
{
if (!URLCache_FindEntry(pHeader, lpszUrlName, &pEntry))
{
URLCache_UnlockIndex(pHeader);
TRACE("entry %s not found!\n", lpszUrlName);
SetLastError(ERROR_FILE_NOT_FOUND);
return FALSE;
}
}
AllocationTable = (LPBYTE)pHeader + ALLOCATION_TABLE_OFFSET;
/* update allocation table */
dwStartBlock = ((DWORD)pEntry - (DWORD)pHeader) / BLOCKSIZE;
for (dwBlock = dwStartBlock; dwBlock < dwStartBlock + pEntry->dwBlocksUsed; dwBlock++)
URLCache_Allocation_BlockFree(AllocationTable, dwBlock);
URLCache_DeleteEntry(pEntry);
/* FIXME: update hash table */
URLCache_UnlockIndex(pHeader);
return TRUE;
}
/***********************************************************************
* CreateUrlCacheGroup (WININET.@)
*
*/
INTERNETAPI GROUPID WINAPI CreateUrlCacheGroup(DWORD dwFlags, LPVOID
lpReserved)
{
FIXME("(%lx, %p): stub\n", dwFlags, lpReserved);
return FALSE;
}
/***********************************************************************
* FindFirstUrlCacheEntryA (WININET.@)
*
*/
INTERNETAPI HANDLE WINAPI FindFirstUrlCacheEntryA(LPCSTR lpszUrlSearchPattern,
LPINTERNET_CACHE_ENTRY_INFOA lpFirstCacheEntryInfo, LPDWORD lpdwFirstCacheEntryInfoBufferSize)
{
FIXME("(%s, %p, %p): stub\n", debugstr_a(lpszUrlSearchPattern), lpFirstCacheEntryInfo, lpdwFirstCacheEntryInfoBufferSize);
return 0;
}
/***********************************************************************
* FindFirstUrlCacheEntryW (WININET.@)
*
*/
INTERNETAPI HANDLE WINAPI FindFirstUrlCacheEntryW(LPCWSTR lpszUrlSearchPattern,
LPINTERNET_CACHE_ENTRY_INFOW lpFirstCacheEntryInfo, LPDWORD lpdwFirstCacheEntryInfoBufferSize)
{
FIXME("(%s, %p, %p): stub\n", debugstr_w(lpszUrlSearchPattern), lpFirstCacheEntryInfo, lpdwFirstCacheEntryInfoBufferSize);
return 0;
}
/***********************************************************************
* DeleteUrlCacheGroup (WININET.@)
*
*/
BOOL WINAPI DeleteUrlCacheGroup(GROUPID GroupId, DWORD dwFlags, LPVOID lpReserved)
{
FIXME("STUB\n");
return FALSE;
}
/***********************************************************************
* SetUrlCacheEntryGroup (WININET.@)
*
*/
BOOL WINAPI SetUrlCacheEntryGroup(LPCSTR lpszUrlName, DWORD dwFlags,
GROUPID GroupId, LPBYTE pbGroupAttributes, DWORD cbGroupAttributes,
LPVOID lpReserved)
{
FIXME("STUB\n");
SetLastError(ERROR_FILE_NOT_FOUND);
return FALSE;
}
/***********************************************************************
* GetUrlCacheEntryInfoW (WININET.@)
*
*/
BOOL WINAPI GetUrlCacheEntryInfoW(LPCWSTR lpszUrl,
LPINTERNET_CACHE_ENTRY_INFOW lpCacheEntry,
LPDWORD lpCacheEntrySize)
{
FIXME("(%s) stub\n",debugstr_w(lpszUrl));
SetLastError(ERROR_FILE_NOT_FOUND);
return FALSE;
}
/***********************************************************************
* GetUrlCacheEntryInfoExW (WININET.@)
*
*/
BOOL WINAPI GetUrlCacheEntryInfoExW(
LPCWSTR lpszUrl,
LPINTERNET_CACHE_ENTRY_INFOW lpCacheEntryInfo,
LPDWORD lpdwCacheEntryInfoBufSize,
LPWSTR lpszReserved,
LPDWORD lpdwReserved,
LPVOID lpReserved,
DWORD dwFlags)
{
FIXME(" url=%s, flags=%ld\n",debugstr_w(lpszUrl),dwFlags);
INTERNET_SetLastError(ERROR_FILE_NOT_FOUND);
return FALSE;
}
/***********************************************************************
* GetUrlCacheConfigInfoA (WININET.@)
*
* CacheInfo is some CACHE_CONFIG_INFO structure, with no MS info found by google
*/
BOOL WINAPI GetUrlCacheConfigInfoA(LPDWORD CacheInfo, LPDWORD size, DWORD bitmask)
{
FIXME("(%p, %p, %lx)\n", CacheInfo, size, bitmask);
INTERNET_SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
/***********************************************************************
* GetUrlCacheConfigInfoW (WININET.@)
*/
BOOL WINAPI GetUrlCacheConfigInfoW(LPDWORD CacheInfo, LPDWORD size, DWORD bitmask)
{
FIXME("(%p, %p, %lx)\n", CacheInfo, size, bitmask);
INTERNET_SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
/***********************************************************************
* SetUrlCacheEntryInfoA (WININET.@)
*/
BOOL WINAPI SetUrlCacheEntryInfoA(LPCSTR lpszUrlName, LPINTERNET_CACHE_ENTRY_INFOA lpCacheEntryInfo, DWORD dwFieldControl)
{
FIXME("stub\n");
return FALSE;
}
/***********************************************************************
* SetUrlCacheEntryInfoW (WININET.@)
*/
BOOL WINAPI SetUrlCacheEntryInfoW(LPCWSTR lpszUrlName, LPINTERNET_CACHE_ENTRY_INFOW lpCacheEntryInfo, DWORD dwFieldControl)
{
FIXME("stub\n");
return FALSE;
}
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