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Dicas
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Visual Basic (Internet)
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Título da Dica: Listando todos os cookies e arquivos temporários da internet (Temporary Internet Files)
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Postada em 12/3/2004 por Josefh Hennyere
'Insira num Form, 3 Command Buttons, 1 List Box e 1 Label
'Command1 - Lista todos os cookies e arquivos temporários
'Command2 - Apaga o arquivo selecionado
'Command3 - Apaga todos os arquivos
'Num módulo.bas
Option Explicit
Public Const ERROR_CACHE_FIND_FAIL As Long = 0
Public Const ERROR_CACHE_FIND_SUCCESS As Long = 1
Public Const ERROR_FILE_NOT_FOUND As Long = 2
Public Const ERROR_ACCESS_DENIED As Long = 5
Public Const ERROR_INSUFFICIENT_BUFFER As Long = 122
Public Const MAX_PATH As Long = 260
Public Const MAX_CACHE_ENTRY_INFO_SIZE As Long = 4096
Public Const LMEM_FIXED As Long = &H0
Public Const LMEM_ZEROINIT As Long = &H40
Public Const LPTR As Long = (LMEM_FIXED Or LMEM_ZEROINIT)
Public Const NORMAL_CACHE_ENTRY As Long = &H1
Public Const EDITED_CACHE_ENTRY As Long = &H8
Public Const TRACK_OFFLINE_CACHE_ENTRY As Long = &H10
Public Const TRACK_ONLINE_CACHE_ENTRY As Long = &H20
Public Const STICKY_CACHE_ENTRY As Long = &H40
Public Const SPARSE_CACHE_ENTRY As Long = &H10000
Public Const COOKIE_CACHE_ENTRY As Long = &H100000
Public Const URLHISTORY_CACHE_ENTRY As Long = &H200000
Public Const URLCACHE_FIND_DEFAULT_FILTER As Long = NORMAL_CACHE_ENTRY Or _
COOKIE_CACHE_ENTRY Or _
URLHISTORY_CACHE_ENTRY Or _
TRACK_OFFLINE_CACHE_ENTRY Or _
TRACK_ONLINE_CACHE_ENTRY Or _
STICKY_CACHE_ENTRY
Public Type FILETIME
dwLowDateTime As Long
dwHighDateTime As Long
End Type
Public Type INTERNET_CACHE_ENTRY_INFO
dwStructSize As Long
lpszSourceUrlName As Long
lpszLocalFileName As Long
CacheEntryType As Long
dwUseCount As Long
dwHitRate As Long
dwSizeLow As Long
dwSizeHigh As Long
LastModifiedTime As FILETIME
ExpireTime As FILETIME
LastAccessTime As FILETIME
LastSyncTime As FILETIME
lpHeaderInfo As Long
dwHeaderInfoSize As Long
lpszFileExtension As Long
dwExemptDelta As Long
End Type
Public Declare Function FindFirstUrlCacheEntry Lib "wininet" _
Alias "FindFirstUrlCacheEntryA" _
(ByVal lpszUrlSearchPattern As String, _
lpFirstCacheEntryInfo As Any, _
lpdwFirstCacheEntryInfoBufferSize As Long) As Long
Public Declare Function FindNextUrlCacheEntry Lib "wininet" _
Alias "FindNextUrlCacheEntryA" _
(ByVal hEnumHandle As Long, _
lpNextCacheEntryInfo As Any, _
lpdwNextCacheEntryInfoBufferSize As Long) As Long
Public Declare Function FindCloseUrlCache Lib "wininet" _
(ByVal hEnumHandle As Long) As Long
Public Declare Function DeleteUrlCacheEntry Lib "wininet" _
Alias "DeleteUrlCacheEntryA" _
(ByVal lpszUrlName As String) As Long
Public Declare Sub CopyMemory Lib "kernel32" _
Alias "RtlMoveMemory" _
(pDest As Any, _
pSource As Any, _
ByVal dwLength As Long)
Public Declare Function lstrcpyA Lib "kernel32" _
(ByVal RetVal As String, ByVal Ptr As Long) As Long
Public Declare Function lstrlenA Lib "kernel32" _
(ByVal Ptr As Any) As Long
Public Declare Function LocalAlloc Lib "kernel32" _
(ByVal uFlags As Long, _
ByVal uBytes As Long) As Long
Public Declare Function LocalFree Lib "kernel32" _
(ByVal hMem As Long) As Long
'No Form
Option Explicit
Private Sub Command1_Click()
GetCacheURLList
Label1.Caption = List1.ListCount & " files listed."
End Sub
Private Sub Command2_Click()
Dim cachefile As String
cachefile = List1.List(List1.ListIndex)
Call DeleteUrlCacheEntry(cachefile)
GetCacheURLList
End Sub
Private Sub Command3_Click()
Dim cachefile As String
Dim i As Long
For i = 0 To List1.ListCount - 1
cachefile = List1.List(i)
If InStr(cachefile, "Cookie") = 0 Then
Call DeleteUrlCacheEntry(cachefile)
End If
Next
GetCacheURLList
End Sub
Private Sub List1_Click()
Command2.Enabled = InStr(List1.List(List1.ListIndex), "Cookie") = 0
End Sub
Public Sub GetCacheURLList()
Dim ICEI As INTERNET_CACHE_ENTRY_INFO
Dim hFile As Long
Dim cachefile As String
Dim posUrl As Long
Dim posEnd As Long
Dim dwBuffer As Long
Dim pntrICE As Long
List1.Clear
dwBuffer = 0
hFile = FindFirstUrlCacheEntry(0&, ByVal 0, dwBuffer)
If (hFile = ERROR_CACHE_FIND_FAIL) And _
(Err.LastDllError = ERROR_INSUFFICIENT_BUFFER) Then
pntrICE = LocalAlloc(LMEM_FIXED, dwBuffer)
If pntrICE Then
CopyMemory ByVal pntrICE, dwBuffer, 4
hFile = FindFirstUrlCacheEntry(vbNullString, ByVal pntrICE, dwBuffer)
If hFile <> ERROR_CACHE_FIND_FAIL Then
Do
CopyMemory ICEI, ByVal pntrICE, Len(ICEI)
If (ICEI.CacheEntryType And _
NORMAL_CACHE_ENTRY) = NORMAL_CACHE_ENTRY Then
cachefile = GetStrFromPtrA(ICEI.lpszSourceUrlName)
List1.AddItem cachefile
End If
Call LocalFree(pntrICE)
dwBuffer = 0
Call FindNextUrlCacheEntry(hFile, ByVal 0, dwBuffer)
pntrICE = LocalAlloc(LMEM_FIXED, dwBuffer)
CopyMemory ByVal pntrICE, dwBuffer, 4
Loop While FindNextUrlCacheEntry(hFile, ByVal pntrICE, dwBuffer)
End If
End If
End If
Call LocalFree(pntrICE)
Call FindCloseUrlCache(hFile)
End Sub
Public Function GetStrFromPtrA(ByVal lpszA As Long) As String
GetStrFromPtrA = String$(lstrlenA(ByVal lpszA), 0)
Call lstrcpyA(ByVal GetStrFromPtrA, ByVal lpszA)
End Function
'Josefh Hennyere
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