<%
' For examples, documentation, and your own free copy, go to:
' http://www.freeaspupload.net
' Note: You can copy and use this script for free and you can make changes
' to the code, but you cannot remove the above comment.
'Changes:
'Aug 2, 2005: Add support for checkboxes and other input elements with multiple values
'Jan 6, 2009: Lars added ASP_CHUNK_SIZE
const DEFAULT_ASP_CHUNK_SIZE = 200000
Class FreeASPUpload
Public UploadedFiles
Public FormElements
Private VarArrayBinRequest
Private StreamRequest
Private uploadedYet
Private internalChunkSize
Private Sub Class_Initialize()
Set UploadedFiles = Server.CreateObject("Scripting.Dictionary")
Set FormElements = Server.CreateObject("Scripting.Dictionary")
Set StreamRequest = Server.CreateObject("ADODB.Stream")
StreamRequest.Type = 2 ' adTypeText
StreamRequest.Open
uploadedYet = false
internalChunkSize = DEFAULT_ASP_CHUNK_SIZE
End Sub
Private Sub Class_Terminate()
If IsObject(UploadedFiles) Then
UploadedFiles.RemoveAll()
Set UploadedFiles = Nothing
End If
If IsObject(FormElements) Then
FormElements.RemoveAll()
Set FormElements = Nothing
End If
StreamRequest.Close
Set StreamRequest = Nothing
End Sub
Public Property Get Form(sIndex)
Form = ""
If FormElements.Exists(LCase(sIndex)) Then Form = FormElements.Item(LCase(sIndex))
End Property
Public Property Get Files()
Files = UploadedFiles.Items
End Property
Public Property Get Exists(sIndex)
Exists = false
If FormElements.Exists(LCase(sIndex)) Then Exists = true
End Property
Public Property Get FileExists(sIndex)
FileExists = false
if UploadedFiles.Exists(LCase(sIndex)) then FileExists = true
End Property
Public Property Get chunkSize()
chunkSize = internalChunkSize
End Property
Public Property Let chunkSize(sz)
internalChunkSize = sz
End Property
'Calls Upload to extract the data from the binary request and then saves the uploaded files
Public Sub Save(path)
Dim streamFile, fileItem
if Right(path, 1) <> "\" then path = path & "\"
if not uploadedYet then Upload
For Each fileItem In UploadedFiles.Items
Set streamFile = Server.CreateObject("ADODB.Stream")
streamFile.Type = 1
streamFile.Open
StreamRequest.Position=fileItem.Start
StreamRequest.CopyTo streamFile, fileItem.Length
streamFile.SaveToFile path & fileItem.FileName, 2
streamFile.close
Set streamFile = Nothing
fileItem.Path = path & fileItem.FileName
Next
End Sub
public sub SaveOne(path, num, byref outFileName, byref outLocalFileName)
Dim streamFile, fileItems, fileItem, fs
set fs = Server.CreateObject("Scripting.FileSystemObject")
if Right(path, 1) <> "\" then path = path & "\"
if not uploadedYet then Upload
if UploadedFiles.Count > 0 then
fileItems = UploadedFiles.Items
set fileItem = fileItems(num)
outFileName = fileItem.FileName
outLocalFileName = GetFileName(path, outFileName)
Set streamFile = Server.CreateObject("ADODB.Stream")
streamFile.Type = 1
streamFile.Open
StreamRequest.Position = fileItem.Start
StreamRequest.CopyTo streamFile, fileItem.Length
streamFile.SaveToFile path & outLocalFileName, 2
streamFile.close
Set streamFile = Nothing
fileItem.Path = path & filename
end if
end sub
Public Function SaveBinRequest(path) ' For debugging purposes
StreamRequest.SaveToFile path & "\debugStream.bin", 2
End Function
Public Sub DumpData() 'only works if files are plain text
Dim i, aKeys, f
response.write "Form Items:<br>"
aKeys = FormElements.Keys
For i = 0 To FormElements.Count -1 ' Iterate the array
response.write aKeys(i) & " = " & FormElements.Item(aKeys(i)) & "<BR>"
Next
response.write "Uploaded Files:<br>"
For Each f In UploadedFiles.Items
response.write "Name: " & f.FileName & "<br>"
response.write "Type: " & f.ContentType & "<br>"
response.write "Start: " & f.Start & "<br>"
response.write "Size: " & f.Length & "<br>"
Next
End Sub
Public Sub Upload()
Dim nCurPos, nDataBoundPos, nLastSepPos
Dim nPosFile, nPosBound
Dim sFieldName, osPathSep, auxStr
Dim readBytes, readLoop, tmpBinRequest
'RFC1867 Tokens
Dim vDataSep
Dim tNewLine, tDoubleQuotes, tTerm, tFilename, tName, tContentDisp, tContentType
tNewLine = String2Byte(Chr(13))
tDoubleQuotes = String2Byte(Chr(34))
tTerm = String2Byte("--")
tFilename = String2Byte("filename=""")
tName = String2Byte("name=""")
tContentDisp = String2Byte("Content-Disposition")
tContentType = String2Byte("Content-Type:")
uploadedYet = true
on error resume next
readBytes = internalChunkSize
VarArrayBinRequest = Request.BinaryRead(readBytes)
VarArrayBinRequest = midb(VarArrayBinRequest, 1, lenb(VarArrayBinRequest))
for readLoop = 0 to 300000
tmpBinRequest = Request.BinaryRead(readBytes)
if readBytes < 1 then exit for
VarArrayBinRequest = VarArrayBinRequest & midb(tmpBinRequest, 1, lenb(tmpBinRequest))
next
if Err.Number <> 0 then
response.write "<br><br><B>System reported this error:</B><p>"
response.write Err.Description & "<p>"
response.write "The most likely cause for this error is the incorrect setup of AspMaxRequestEntityAllowed in IIS MetaBase. Please see instructions in the <A HREF='http://www.freeaspupload.net/freeaspupload/requirements.asp'>requirements page of freeaspupload.net</A>.<p>"
Exit Sub
end if
on error goto 0 'reset error handling
nCurPos = FindToken(tNewLine,1) 'Note: nCurPos is 1-based (and so is InstrB, MidB, etc)
If nCurPos <= 1 Then Exit Sub
'vDataSep is a separator like -----------------------------21763138716045
vDataSep = MidB(VarArrayBinRequest, 1, nCurPos-1)
'Start of current separator
nDataBoundPos = 1
'Beginning of last line
nLastSepPos = FindToken(vDataSep & tTerm, 1)
Do Until nDataBoundPos = nLastSepPos
nCurPos = SkipToken(tContentDisp, nDataBoundPos)
nCurPos = SkipToken(tName, nCurPos)
sFieldName = ExtractField(tDoubleQuotes, nCurPos)
nPosFile = FindToken(tFilename, nCurPos)
nPosBound = FindToken(vDataSep, nCurPos)
If nPosFile <> 0 And nPosFile < nPosBound Then
Dim oUploadFile
Set oUploadFile = New UploadedFile
nCurPos = SkipToken(tFilename, nCurPos)
auxStr = ExtractField(tDoubleQuotes, nCurPos)
' We are interested only in the name of the file, not the whole path
' Path separator is \ in windows, / in UNIX
' While IE seems to put the whole pathname in the stream, Mozilla seem to
' only put the actual file name, so UNIX paths may be rare. But not impossible.
osPathSep = "\"
if InStr(auxStr, osPathSep) = 0 then osPathSep = "/"
oUploadFile.FileName = Right(auxStr, Len(auxStr)-InStrRev(auxStr, osPathSep))
if (Len(oUploadFile.FileName) > 0) then 'File field not left empty
nCurPos = SkipToken(tContentType, nCurPos)
auxStr = ExtractField(tNewLine, nCurPos)
' NN on UNIX puts things like this in the stream:
' ?? python py type=?? python application/x-python
oUploadFile.ContentType = Right(auxStr, Len(auxStr)-InStrRev(auxStr, " "))
nCurPos = FindToken(tNewLine, nCurPos) + 4 'skip empty line
oUploadFile.Start = nCurPos+1
oUploadFile.Length = FindToken(vDataSep, nCurPos) - 2 - nCurPos
If oUploadFile.Length > 0 Then UploadedFiles.Add LCase(sFieldName), oUploadFile
End If
Else
Dim nEndOfData
nCurPos = FindToken(tNewLine, nCurPos) + 4 'skip empty line
nEndOfData = FindToken(vDataSep, nCurPos) - 2
If Not FormElements.Exists(LCase(sFieldName)) Then
FormElements.Add LCase(sFieldName), Byte2String(MidB(VarArrayBinRequest, nCurPos, nEndOfData-nCurPos))
else
FormElements.Item(LCase(sFieldName))= FormElements.Item(LCase(sFieldName)) & ", " & Byte2String(MidB(VarArrayBinRequest, nCurPos, nEndOfData-nCurPos))
end if
End If
'Advance to next separator
nDataBoundPos = FindToken(vDataSep, nCurPos)
Loop
StreamRequest.WriteText(VarArrayBinRequest)
End Sub
Private Function SkipToken(sToken, nStart)
SkipToken = InstrB(nStart, VarArrayBinRequest, sToken)
If SkipToken = 0 then
Response.write "Error in parsing uploaded binary request. The most likely cause for this error is the incorrect setup of AspMaxRequestEntityAllowed in IIS MetaBase. Please see instructions in the <A HREF='http://www.freeaspupload.net/freeaspupload/requirements.asp'>requirements page of freeaspupload.net</A>.<p>"
Response.End
end if
SkipToken = SkipToken + LenB(sToken)
End Function
Private Function FindToken(sToken, nStart)
FindToken = InstrB(nStart, VarArrayBinRequest, sToken)
End Function
Private Function ExtractField(sToken, nStart)
Dim nEnd
nEnd = InstrB(nStart, VarArrayBinRequest, sToken)
If nEnd = 0 then
Response.write "Error in parsing uploaded binary request."
Response.End
end if
ExtractField = Byte2String(MidB(VarArrayBinRequest, nStart, nEnd-nStart))
End Function
'String to byte string conversion
Private Function String2Byte(sString)
Dim i
For i = 1 to Len(sString)
String2Byte = String2Byte & ChrB(AscB(Mid(sString,i,1)))
Next
End Function
'Byte string to string conversion
Private Function Byte2String(bsString)
Dim i
dim b1, b2, b3, b4
Byte2String =""
For i = 1 to LenB(bsString)
if AscB(MidB(bsString,i,1)) < 128 then
' One byte
Byte2String = Byte2String & ChrW(AscB(MidB(bsString,i,1)))
elseif AscB(MidB(bsString,i,1)) < 224 then
' Two bytes
b1 = AscB(MidB(bsString,i,1))
b2 = AscB(MidB(bsString,i+1,1))
Byte2String = Byte2String & ChrW((((b1 AND 28) / 4) * 256 + (b1 AND 3) * 64 + (b2 AND 63)))
i = i + 1
elseif AscB(MidB(bsString,i,1)) < 240 then
' Three bytes
b1 = AscB(MidB(bsString,i,1))
b2 = AscB(MidB(bsString,i+1,1))
b3 = AscB(MidB(bsString,i+2,1))
Byte2String = Byte2String & ChrW(((b1 AND 15) * 16 + (b2 AND 60)) * 256 + (b2 AND 3) * 64 + (b3 AND 63))
i = i + 2
else
' Four bytes
b1 = AscB(MidB(bsString,i,1))
b2 = AscB(MidB(bsString,i+1,1))
b3 = AscB(MidB(bsString,i+2,1))
b4 = AscB(MidB(bsString,i+3,1))
' Don't know how to handle this, I believe Microsoft doesn't support these characters so I replace them with a "^"
'Byte2String = Byte2String & ChrW(((b1 AND 3) * 64 + (b2 AND 63)) & "," & (((b1 AND 28) / 4) * 256 + (b1 AND 3) * 64 + (b2 AND 63)))
Byte2String = Byte2String & "^"
i = i + 3
end if
Next
End Function
End Class
Class UploadedFile
Public ContentType
Public Start
Public Length
Public Path
Private nameOfFile
' Need to remove characters that are valid in UNIX, but not in Windows
Public Property Let FileName(fN)
nameOfFile = fN
nameOfFile = SubstNoReg(nameOfFile, "\", "_")
nameOfFile = SubstNoReg(nameOfFile, "/", "_")
nameOfFile = SubstNoReg(nameOfFile, ":", "_")
nameOfFile = SubstNoReg(nameOfFile, "*", "_")
nameOfFile = SubstNoReg(nameOfFile, "?", "_")
nameOfFile = SubstNoReg(nameOfFile, """", "_")
nameOfFile = SubstNoReg(nameOfFile, "<", "_")
nameOfFile = SubstNoReg(nameOfFile, ">", "_")
nameOfFile = SubstNoReg(nameOfFile, "|", "_")
End Property
Public Property Get FileName()
FileName = nameOfFile
End Property
'Public Property Get FileN()ame
End Class
' Does not depend on RegEx, which is not available on older VBScript
' Is not recursive, which means it will not run out of stack space
Function SubstNoReg(initialStr, oldStr, newStr)
Dim currentPos, oldStrPos, skip
If IsNull(initialStr) Or Len(initialStr) = 0 Then
SubstNoReg = ""
ElseIf IsNull(oldStr) Or Len(oldStr) = 0 Then
SubstNoReg = initialStr
Else
If IsNull(newStr) Then newStr = ""
currentPos = 1
oldStrPos = 0
SubstNoReg = ""
skip = Len(oldStr)
Do While currentPos <= Len(initialStr)
oldStrPos = InStr(currentPos, initialStr, oldStr)
If oldStrPos = 0 Then
SubstNoReg = SubstNoReg & Mid(initialStr, currentPos, Len(initialStr) - currentPos + 1)
currentPos = Len(initialStr) + 1
Else
SubstNoReg = SubstNoReg & Mid(initialStr, currentPos, oldStrPos - currentPos) & newStr
currentPos = oldStrPos + skip
End If
Loop
End If
End Function
Function GetFileName(strSaveToPath, FileName)
'This function is used when saving a file to check there is not already a file with the same name so that you don't overwrite it.
'It adds numbers to the filename e.g. file.gif becomes file1.gif becomes file2.gif and so on.
'It keeps going until it returns a filename that does not exist.
'You could just create a filename from the ID field but that means writing the record - and it still might exist!
'N.B. Requires strSaveToPath variable to be available - and containing the path to save to
Dim Counter
Dim Flag
Dim strTempFileName
Dim FileExt
Dim NewFullPath
dim objFSO, p
Set objFSO = CreateObject("Scripting.FileSystemObject")
Counter = 0
p = instrrev(FileName, ".")
FileExt = mid(FileName, p+1)
strTempFileName = left(FileName, p-1)
NewFullPath = strSaveToPath & "\" & FileName
Flag = False
Do Until Flag = True
If objFSO.FileExists(NewFullPath) = False Then
Flag = True
GetFileName = Mid(NewFullPath, InstrRev(NewFullPath, "\") + 1)
Else
Counter = Counter + 1
NewFullPath = strSaveToPath & "\" & strTempFileName & Counter & "." & FileExt
End If
Loop
End Function
%>
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