ASP no component File upload instance

Upload | No component 1. library file (upload.inc.asp)
<%
Dim Oupfilestream

Class Upfile_class

Dim Form,file,version,err

Private Sub Class_Initialize
Version = "No component upload class Version V1.0"
ERR =-1
End Sub

Private Sub Class_Terminate
' Erase variables and the like
If ERR < 0 Then
Form.removeall
Set Form = Nothing
File.removeall
Set File = Nothing
Oupfilestream.close
Set Oupfilestream = Nothing
End If
End Sub

Public Sub GetData (retsize)
' Define variables
Dim Requestbindate,sspace,bcrlf,sinfo,iinfostart,iinfoend,tstream,istart,ofileinfo
Dim Ifilesize,sfilepath,sfiletype,sformvalue,sfilename
Dim Ifindstart,ifindend
Dim Iformstart,iformend,sformname
' Code starts
If Request.TotalBytes < 1 Then
ERR = 1
Exit Sub
End If
If retsize > 0 Then
If request.totalbytes > Retsize Then
ERR = 2
Exit Sub
End If
End If
Set Form = Server.CreateObject ("Scripting.Dictionary")
Form.comparemode = 1
Set File = Server.CreateObject ("Scripting.Dictionary")
File.comparemode = 1
Set Tstream = Server.CreateObject ("ADODB. Stream ")
Set Oupfilestream = Server.CreateObject ("ADODB. Stream ")
Oupfilestream.type = 1
Oupfilestream.mode = 3
Oupfilestream.open
Oupfilestream.write Request.BinaryRead (request.totalbytes)
oupfilestream.position = 0
Requestbindate = Oupfilestream.read
Iformend = Oupfilestream.size
Bcrlf = ChrB (+) & ChrB (10)
' Get the separator between each item
Sspace = MidB (requestbindate,1, InStrB (1,REQUESTBINDATE,BCRLF)-1)
IStart = LenB (sspace)
Iformstart = istart+2
' Explode project
Todo
Iinfoend = InStrB (Iformstart,requestbindate,bcrlf & Bcrlf) +3
Tstream.type = 1
Tstream.mode = 3
Tstream.open
Oupfilestream.position = Iformstart
Oupfilestream.copyto Tstream,iinfoend-iformstart
tstream.position = 0
Tstream.type = 2
Tstream.charset = "gb2312"
Sinfo = Tstream.readtext
' Get form Item name
Iformstart = InStrB (iinfoend,requestbindate,sspace)-1
Ifindstart = InStr (22,sinfo, "name=" "", 1) +6
Ifindend = InStr (Ifindstart,sinfo, "" "", 1)
Sformname = Mid (Sinfo,ifindstart,ifindend-ifindstart)
' If it's a file
If InStr (45,sinfo, "filename=" "", 1) > 0 Then
Set ofileinfo = new Fileinfo_class
' Get file properties
Ifindstart = InStr (Ifindend,sinfo, "filename=" "", 1) +10
Ifindend = InStr (Ifindstart,sinfo, "" "", 1)
sFileName = Mid (Sinfo,ifindstart,ifindend-ifindstart)
Ofileinfo.filename = Mid (Sfilename,instrrev (sfilename, "\") +1)
Ofileinfo.filepath = Left (Sfilename,instrrev (sfilename, "\") +1)
Ofileinfo.fileext = Mid (Sfilename,instrrev (sFileName, ".") +1)
Ifindstart = InStr (Ifindend,sinfo, "Content-type:", 1) +14
Ifindend = InStr (IFINDSTART,SINFO,VBCR)
Ofileinfo.filetype = Mid (Sinfo,ifindstart,ifindend-ifindstart)
Ofileinfo.filestart = Iinfoend
Ofileinfo.filesize = Iformstart-iinfoend-2
Ofileinfo.formname = Sformname
File.add Sformname,ofileinfo
Else
' If it is a form item
Tstream.close
Tstream.type = 1
Tstream.mode = 3
Tstream.open
Oupfilestream.position = Iinfoend
Oupfilestream.copyto tstream,iformstart-iinfoend-2
tstream.position = 0
Tstream.type = 2
Tstream.charset = "gb2312"
Sformvalue = Tstream.readtext
If form.exists (sformname) Then
Form (sformname) = form (Sformname) & "," & Sformvalue
Else
Form. ADD Sformname,sformvalue
End If
End If
Tstream.close
Iformstart = iformstart+istart+2
' If you get to the end of the file, quit.
Loop Until (iformstart+2) = Iformend
Requestbindate = ""
Set Tstream = Nothing
End Sub
End Class

' File attribute Class
Class Fileinfo_class
Dim Formname,filename,filepath,filesize,filetype,filestart,fileext
' Save File Method
Public Function SaveToFile (Path)
On Error Resume Next
Dim Ofilestream
Set Ofilestream = CreateObject ("ADODB. Stream ")
Ofilestream.type = 1
Ofilestream.mode = 3
Ofilestream.open
Oupfilestream.position = Filestart
Oupfilestream.copyto ofilestream,filesize
Ofilestream.savetofile path,2
Ofilestream.close
Set Ofilestream = Nothing
If Err.number<>0 Then
savetofile=err.number& "* *" &err.descripton
Else
Savetofile= "OK"
End If
End Function

' Get File data
Public Function Filedate
Oupfilestream.position = Filestart
Filedate = Oupfilestream.read (FileSize)
End Function
End Class
%>

2. Process the user submitted page (upload.asp)
<!--#include file= "upload.inc.asp"-->
<title> File Upload </title>
<body topmargin= "0" leftmargin= "0" >
<table width=100% border=0 cellspacing= "0" cellpadding= "0" ><tr><td class=tablebody1 width=100% height= 100% >
<%
Dim upload,file,formname,formpath,filename,fileext
Dim rannum
Call Upfile ()
' =========== no component upload (UPLOAD_0) ====================
Sub Upfile ()
Set upload=new upfile_class ' Build upload Object
Upload. GetData (500*1024) ' Get upload data, here is K

If Upload.err > 0 Then
Select Case Upload.err
Case 1
Response.Write "Please select the file you want to upload first [<a href=# onclick=history.go ( -1) > re-upload </a>]"
Case 2
Response.Write "Picture size exceeds limit K [<a href=# onclick=history.go ( -1) > re-upload </a>]"
End Select
Exit Sub
Else
Formpath=upload.form ("filepath") ' File save directory, this directory must be read/write by program
If Formpath= "" Then
Formpath= "rwdata/"
End If
' Add (/) in the catalogue
If Right (formpath,1) <> "/" Then
formpath=formpath& "/"
End If

For every formName in Upload.file ' lists all uploaded files
Set File=upload.file (formName) ' generates a File object
If File.filesize<100 Then
Response.Write "Please select the picture you want to upload first [<a href=# onclick=history.go ( -1) > re-upload </a>]"
Response.End
End If

Fileext=lcase (file. Fileext)
If Checkfileext (fileext) =false Then
Response.Write "file format is incorrect [<a href=# onclick=history.go ( -1) > re-upload </a>]"
Response.End
End If

' Randomize
Rannum=int (90000*rnd) +10000
Filename=formpath&year (now) &month (now) &day (now) &hour (now) &minute-&second (now) &ranNum& "." &fileext
If file. Filesize>0 Then ' if FileSize > 0 indicates file data
Result=file. SaveToFile (Server.MapPath (filename)) ' Save file
if result= ' OK ' then
Response.Write formname& ' upload OK, had Saved to &filename& <br>
Else
Response.Write formname& "Upload Fail," &result& " <br>
End If
End If
Set file=nothing
Next
Set upload=nothing
End If
End Sub

' Determine if the file type is qualified
Private Function Checkfileext (fileext)
Dim forumupload
Forumupload= "Gif,jpg,bmp,jpeg"
Forumupload=split (Forumupload, ",")
For i=0 to UBound (forumupload)
If LCase (fileext) =lcase (Trim (forumupload (i)) then
Checkfileext=true
Exit Function
Else
Checkfileext=false
End If
Next
End Function
%>
</td></tr></table>
</body>

3.HTML Forms (upload.html)
<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" >
<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 ">
<title>asp No component upload </title>

<body>
Please select the file to upload
<form action= "upfile.asp" method= "post" enctype= "Multipart/form-data" Name= "Form1" >
<input type= "File" name= "file" >
<!--<br>
<input type= "File" name= "file" >
<br>
<input type= "File" name= "file" >
<br>-->
<input type= "Submit" name= "Submission" value= "submitted" >
</form>
</body>