以下是upload.inc源码：
<%
Dim oUpFileStream
'/------------------------------------
'/【上传类的主要成员和过程】
'/包括类的初始销毁和文件信息读取
'/------------------------------------
Class UpFile_Class
Public Form,File,Version,Err
Private CHK_FileType,CHK_MaxSize
'/------------------------------------
'/【特殊函数:类的初始化】
'/------------------------------------
Private Sub Class_Initialize
Version = "无惧上传类 Version V1.0"
Err = -1
CHK_FileType = ""
CHK_MaxSize = -1
Set Form = Server.CreateObject ("Scripting.Dictionary")
Set File = Server.CreateObject ("Scripting.Dictionary")
Set oUpFileStream = Server.CreateObject ("Adodb.Stream")
Form.CompareMode = 1
File.CompareMode = 1
oUpFileStream.Type = 1
oUpFileStream.Mode = 3
oUpFileStream.Open
End Sub
'/------------------------------------
'/【特殊函数:类的销毁】
'/微软在后续语言中抛弃了Let语句
'/------------------------------------
Private Sub Class_Terminate
Form.RemoveAll
Set Form = Nothing
File.RemoveAll
Set File = Nothing
oUpFileStream.Close
Set oUpFileStream = Nothing
End Sub
Public Property Get InceptFileType
InceptFileType = CHK_FileType
End Property
Public Property Let InceptFileType(Byval vType)
CHK_FileType = vType
End Property
Public Property Get MaxSize
MaxSize = CHK_MaxSize
End Property
Public Property Let MaxSize(vSize)
If IsNumeric(vSize) Then CHK_MaxSize = Int(vSize)
End Property
'/------------------------------------
'/【成员函数:GetDate()】
'/------------------------------------
Public Sub GetDate()
'定义变量
Dim RequestBinDate,sSpace,bCrLf,sInfo,iInfoEnd,tStream,iStart,oFileInfo
Dim sFormValue,sFileName,sFormName,RequestSize
Dim iFindStart,iFindEnd,iFormStart,iFormEnd,FileBlag
'代码开始
RequestSize = Int(Request.TotalBytes)
If RequestSize < 1 Then
Err = 1
Exit Sub
End If
Set tStream = Server.CreateObject ("Adodb.Stream")
oUpFileStream.Write Request.BinaryRead (RequestSize)
oUpFileStream.Position = 0
RequestBinDate = oUpFileStream.Read
iFormEnd = oUpFileStream.Size
bCrLf = ChrB (13) & ChrB (10)
'取得每个项目之间的分隔符
sSpace = MidB (RequestBinDate,1, InStrB (1,RequestBinDate,bCrLf)-1)
iStart = LenB (sSpace)
iFormStart = iStart+2
'分解项目
Do
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
'取得表单项目名称
iFormStart = InStrB (iInfoEnd,RequestBinDate,sSpace)-1
iFindStart = InStr(22,sInfo,"name=""",1)+6
iFindEnd = InStr(iFindStart,sInfo,"""",1)
sFormName = Mid(sinfo,iFindStart,iFindEnd-iFindStart)
'如果是文件
If InStr(45,sInfo,"filename=""",1) > 0 Then
Set oFileInfo = new FileInfo_Class
'取得文件属性
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, "/"))
oFileInfo.FileExt = Lcase(Mid(sFileName,InStrRev(sFileName, ".")+1))
iFindStart = InStr (iFindEnd,sInfo,"Content-Type: ",1)+14
iFindEnd = InStr (iFindStart,sInfo,vbCr)
oFileInfo.FileType = Ucase(Mid(sinfo,iFindStart,iFindEnd-iFindStart))
oFileInfo.FileStart = iInfoEnd
oFileInfo.FileSize = iFormStart -iInfoEnd -2
oFileInfo.FormName = sFormName
If Instr(oFileInfo.FileType,"IMAGE/") Or Instr(oFileInfo.FileType,"FLASH") Then
FileBlag = GetImageSize
oFileInfo.FileExt = FileBlag(0)
oFileInfo.FileWidth = FileBlag(1)
oFileInfo.FileHeight = FileBlag(2)
FileBlag = Empty
End If
If CHK_MaxSize > 0 Then
If oFileInfo.FileSize > CHK_MaxSize Then
Err = 2
Exit Sub
End If
End If
If CheckErr(oFileInfo.FileExt) = False Then Exit Sub
File.Add sFormName,oFileInfo
Else
'如果是表单项目
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
tStream.Close
iFormStart = iFormStart+iStart+2
'如果到文件尾了就退出
Loop Until (iFormStart+2) = iFormEnd
RequestBinDate = ""
Set tStream = Nothing
End Sub
'/------------------------------------
'/【成员函数:检查文件扩展名】
'/------------------------------------
Private Function CheckErr(Byval ChkExt)
CheckErr=False
If CHK_FileType = "" Then CheckErr=True : Exit Function
Dim ChkStr
ChkStr = ","&Lcase(CHK_FileType)&","
If Instr(ChkStr,","&ChkExt&",")>0 Then _
CheckErr=True _
Else _
Err = 3
End Function
'/------------------------------------
'/【成员函数:获得图像的宽和高】
'/------------------------------------
Private Function Bin2Str(Byval Bin)
Dim i, Str, Sclow
For i = 1 To LenB(Bin)
Sclow = MidB(Bin,i,1)
If ASCB(Sclow)<128 Then
Str = Str & Chr(ASCB(Sclow))
Else
i = i+1
If i <= LenB(Bin) Then Str = Str & Chr(ASCW(MidB(Bin,i,1)&Sclow))
End If
Next
Bin2Str = Str
End Function
Private Function Num2Str(Byval num,Byval Base,Byval Lens)
Dim ImageSize
ImageSize = ""
While(num>=Base)
ImageSize = (num mod Base) & ImageSize
num = (num - num mod Base)/Base
Wend
Num2Str = Right(String(Lens,"0") & num & ImageSize,Lens)
End Function
Private Function Str2Num(Byval str,Byval Base)
Dim ImageSize,i
ImageSize = 0
For i=1 To Len(str)
ImageSize = ImageSize *Base + Cint(Mid(str,i,1))
Next
Str2Num = ImageSize
End Function
Private Function BinVal(Byval bin)
Dim ImageSize,i
ImageSize = 0
For i = lenb(bin) To 1 Step -1
ImageSize = ImageSize *256 + ASCB(Midb(bin,i,1))
Next
BinVal = ImageSize
End Function
Private Function BinVal2(Byval bin)
Dim ImageSize,i
ImageSize = 0
For i = 1 To Lenb(bin)
ImageSize = ImageSize *256 + ASCB(Midb(bin,i,1))
Next
BinVal2 = ImageSize
End Function
'/------------------------------------
'/【成员函数:获得图片信息】
'/------------------------------------
Private Function GetImageSize()
Dim ImageSize(2),bFlag
bFlag = oUpFileStream.Read(3)
Select Case Hex(BinVal(bFlag))
Case "4E5089":
oUpFileStream.Read(15)
ImageSize(0) = "png"
ImageSize(1) = BinVal2(oUpFileStream.Read(2))
oUpFileStream.Read(2)
ImageSize(2) = BinVal2(oUpFileStream.Read(2))
Case "464947":
oUpFileStream.Read(3)
ImageSize(0) = "gif"
ImageSize(1) = BinVal(oUpFileStream.Read(2))
ImageSize(2) = BinVal(oUpFileStream.Read(2))
Case "535746":
Dim BinData,sConv,nBits
oUpFileStream.Read(5)
BinData = oUpFileStream.Read(1)
sConv = Num2Str(ASCB(BinData),2 ,8)
nBits = Str2Num(Left(sConv,5),2)
sConv = Mid(sConv,6)
While(Len(sConv)<nBits*4)
BinData = oUpFileStream.Read(1)
sConv = sConv&Num2Str(ASCB(BinData),2 ,8)
Wend
ImageSize(0) = "swf"
ImageSize(1) = Int(ABS(Str2Num(Mid(sConv,1*nBits+1,nBits),2)-Str2Num(Mid(sConv,0*nBits+1,nBits),2))/20)
ImageSize(2) = Int(ABS(Str2Num(Mid(sConv,3*nBits+1,nBits),2)-Str2Num(Mid(sConv,2*nBits+1,nBits),2))/20)
Case "535743":'flashmx
ImageSize(0) = "swf"
ImageSize(1) = 0
ImageSize(2) = 0
Case "FFD8FF":
Dim p1
Do
Do: p1 = BinVal(oUpFileStream.Read(1)): Loop While p1 = 255 And Not oUpFileStream.EOS
If p1>191 and p1<196 Then Exit Do Else oUpFileStream.Read(BinVal2(oUpFileStream.Read(2))-2)
Do:p1 = BinVal(oUpFileStream.Read(1)):Loop While p1<255 And Not oUpFileStream.EOS
Loop While True
oUpFileStream.Read(3)
ImageSize(0) = "jpg"
ImageSize(2) = BinVal2(oUpFileStream.Read(2))
ImageSize(1) = BinVal2(oUpFileStream.Read(2))
Case Else:
If Left(Bin2Str(bFlag),2) = "BM" Then
oUpFileStream.Read(15)
ImageSize(0) = "bmp"
ImageSize(1) = BinVal(oUpFileStream.Read(4))
ImageSize(2) = BinVal(oUpFileStream.Read(4))
Else
ImageSize(0) = "(UNKNOWN)"
End If
End Select
GetImagesize = ImageSize
End Function
End Class
'/------------------------------------
'/【文件信息类】
'/包括文件数据的读取保存
'/------------------------------------
Class FileInfo_Class
Public FormName,FileName,FilePath,FileSize,FileType,FileStart,FileExt,FileWidth,FileHeight
Private Sub Class_Initialize
FileWidth=0
FileHeight=0
End Sub
'/------------------------------------
'/【检查文件内是否有恶意Tags】
'/------------------------------------
Public Function byte2asc(inbyte)
dim ThisCharCode,tmpreturn,NextCharCode,tmpvar
tmpreturn = ""
For tmpvar = 1 To LenB(inbyte)
ThisCharCode = AscB(MidB(inbyte,tmpvar,1))
If ThisCharCode < &H80 Then
tmpreturn = tmpreturn & Chr(ThisCharCode)
Else
NextCharCode = AscB(MidB(inbyte,tmpvar+1,1))
tmpreturn = tmpreturn & Chr (CLng(ThisCharCode) * &H100 + CInt(NextCharCode))
tmpvar = tmpvar + 1
End If
Next
byte2asc = tmpreturn
End Function
'/------------------------------------
'/【将文件数据保存到服务端】
'/------------------------------------
Public Sub SaveToFile (Byval Path)
Dim Ext,oFileStream
Ext = LCase(Mid(Path, InStrRev(Path, ".") + 1))
If Ext <> FileExt Then Exit Sub
On Error Resume Next
if instr(byte2asc(FileData),chr(60)&chr(37)) > 0 or instr(byte2asc(FileData),chr(37)&chr(62)) > 0 then
response.write("您上传的文件中包含不安全的代码,抱歉!<a href='javascript:history.go(-1)'> ←返回</a>")
response.end
Exit Sub
End if
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
End Sub
'/------------------------------------
'/【取得上传的文件数据】
'/------------------------------------
Public Function FileData
oUpFileStream.Position = FileStart
FileData = oUpFileStream.Read (FileSize)
End Function
End Class
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