Search for files on harddisk

Posted on 2003-10-28
Last Modified: 2010-05-03

I need to make a program in VB that searches for the existens of a file(s) on the hard disk(s).
If for examples kill.exe and tlist.exe exists then msgbox "Warning".
The files to search for must came from a file, for example filenames.txt

Is that possible?

Question by:harryv

Accepted Solution

fantasy1001 earned 200 total points
ID: 9640229
This is an example of searching you need. Create a file named input.txt in c:\ which contain the filename you want to search. Each filename is separate by newline

Private Declare Function FindFirstFile Lib "kernel32" Alias "FindFirstFileA" (ByVal lpFileName As String, lpFindFileData As WIN32_FIND_DATA) As Long
Private Declare Function FindNextFile Lib "kernel32" Alias "FindNextFileA" (ByVal hFindFile As Long, lpFindFileData As WIN32_FIND_DATA) As Long
Private Declare Function GetFileAttributes Lib "kernel32" Alias "GetFileAttributesA" (ByVal lpFileName As String) As Long
Private Declare Function FindClose Lib "kernel32" (ByVal hFindFile As Long) As Long

Const MAX_PATH = 260

Private Type FILETIME
    dwLowDateTime As Long
    dwHighDateTime As Long
End Type

Private Type WIN32_FIND_DATA
    dwFileAttributes As Long
    ftCreationTime As FILETIME
    ftLastAccessTime As FILETIME
    ftLastWriteTime As FILETIME
    nFileSizeHigh As Long
    nFileSizeLow As Long
    dwReserved0 As Long
    dwReserved1 As Long
    cFileName As String * MAX_PATH
    cAlternate As String * 14
End Type
Function StripNulls(OriginalStr As String) As String
    If (InStr(OriginalStr, Chr(0)) > 0) Then
        OriginalStr = Left(OriginalStr, InStr(OriginalStr, Chr(0)) - 1)
    End If
    StripNulls = OriginalStr
End Function

Function FindFilesAPI(path As String, SearchStr As String, FileCount As Integer, DirCount As Integer)
    'KPD-Team 1999

    Dim FileName As String ' Walking filename variable...
    Dim DirName As String ' SubDirectory Name
    Dim dirNames() As String ' Buffer for directory name entries
    Dim nDir As Integer ' Number of directories in this path
    Dim i As Integer ' For-loop counter...
    Dim hSearch As Long ' Search Handle
    Dim Cont As Integer
    If Right(path, 1) <> "\" Then path = path & "\"
    ' Search for subdirectories.
    nDir = 0
    ReDim dirNames(nDir)
    Cont = True
    hSearch = FindFirstFile(path & "*", WFD)
    If hSearch <> INVALID_HANDLE_VALUE Then
        Do While Cont
        DirName = StripNulls(WFD.cFileName)
        ' Ignore the current and encompassing directories.
        If (DirName <> ".") And (DirName <> "..") Then
            ' Check for directory with bitwise comparison.
            If GetFileAttributes(path & DirName) And FILE_ATTRIBUTE_DIRECTORY Then
                dirNames(nDir) = DirName
                DirCount = DirCount + 1
                nDir = nDir + 1
                ReDim Preserve dirNames(nDir)
            End If
        End If
        Cont = FindNextFile(hSearch, WFD) 'Get next subdirectory.
        Cont = FindClose(hSearch)
    End If
    ' Walk through this directory and sum file sizes.
    hSearch = FindFirstFile(path & SearchStr, WFD)
    Cont = True
    If hSearch <> INVALID_HANDLE_VALUE Then
        While Cont
            FileName = StripNulls(WFD.cFileName)
            If (FileName <> ".") And (FileName <> "..") Then
                FindFilesAPI = FindFilesAPI + (WFD.nFileSizeHigh * MAXDWORD) + WFD.nFileSizeLow
                FileCount = FileCount + 1
            End If
            Cont = FindNextFile(hSearch, WFD) ' Get next file
        Cont = FindClose(hSearch)
    End If
    ' If there are sub-directories...
    If nDir > 0 Then
        ' Recursively walk into them...
        For i = 0 To nDir - 1
            FindFilesAPI = FindFilesAPI + FindFilesAPI(path & dirNames(i) & "\", SearchStr, FileCount, DirCount)
        Next i
    End If
End Function

Sub Command1_Click()
    Dim SearchPath As String, FindStr As String
    Dim FileSize As Long
    Dim NumFiles As Integer, NumDirs As Integer
    SearchPath = "c:\"
    Open "c:\input.txt" For Input As #1
    Do While Not EOF(1)
        Line Input #1, FindStr
        Screen.MousePointer = vbHourglass
        FileSize = FindFilesAPI(SearchPath, FindStr, NumFiles, NumDirs)
        If NumFiles > 0 Then
            MsgBox "WARNING: " & NumFiles & " file(s) with name " & FindStr & " found in " & NumDirs + 1 & " Directories", vbCritical
        End If
        Screen.MousePointer = vbDefault
    Close #1
End Sub

Thanks & Cheers

Expert Comment

ID: 9640277
This will be helpful for u

Dim objFSO As Scripting.FileSystemObject
Dim  txtStream as TextStream
Dim strFileName as String
Dim File As Scripting.TextStream

Set File = objFSO.GetFile("C:\FileNames.txt")
Set txtStream = File.OpenAsTextStream(OpenFileForReading)

'Reading file names from text file
Do While Not txtStream.AtEndOfStream
      strFileName = txtStream.ReadLine
'Check whether text file is empty
      If Trim(strFileName) = "" Then
            MsgBox "No File Names found in file...!", vbInformation, "Search files"
            Exit Sub
            'Search for harmful files
            strFileName = Dir("C:\" + strFileName)
             'If found display the warning
             If Trim(strFileName) = "" Then
                    MsgBox "Harmful file  " + strFileName + "Found...!", vbInformation, "Warning"
             End If
      End If


Here I am reading file name from text file called FileName.txt and search those files in the specified path.If file found display the message.


Expert Comment

ID: 9640554
hello harryv
This   simple api function can help you a lot

Private Declare Function SearchTreeForFile Lib "imagehlp" (ByVal RootPath As String, ByVal InputPathName As String, ByVal OutputPathBuffer As String) As Long
Private Const MAX_PATH = 260
Private Sub Form_Load()
    Dim tempStr As String, Ret As Long
    Dim MyValue  As Variant
    tempStr = String(MAX_PATH, 0)
    ' you can specify the path as c:\ or d:\
    'for eg.  C:\;abc.txt
    MyValue = InputBox("Dirve and file name separted by ;")
    MyValue = Split(MyValue, ";")
    Ret = SearchTreeForFile(MyValue(0), MyValue(1), tempStr)
    If Ret <> 0 Then
        MsgBox "Located file at " + Left$(tempStr, InStr(1, tempStr, Chr$(0)) - 1)
        MsgBox "File not found!"
    End If
End Sub

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