?? clsup.asp
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'--------------------------------------------------------------------------------------------
'轉發時請保留此聲明信息,這段聲明不并會影響你的速度!
'******************* 先鋒無組件上傳類(杜絕上傳漏洞版) Ver2004 ********************
'作者:梁無懼、孫立宇、apollosun、ezhonghua
'官方網站:http://www.lkstar.com 技術支持論壇：http://bbs.lkstar.com
'電子郵件:kickball@netease.com 在線QQ:94294089
'版權聲明:版權沒有,盜版不究，源碼公開,各種用途均可免費使用，歡迎你到技術論壇來尋求支持。
'網上流行的所有的無組件上傳類都有該類漏洞——黑客利用抓包嗅探、ULTRAEDIT和“網絡軍刀”
'等黑客工具偽造IP包,可以突破服務器端對上傳文件名、路徑的判斷,從而巧妙上傳ASP、ASA、CGI、CDX、
'CER、ASPX類型的網頁木馬。本人仔細分析了各種黑客手段，針對網上最流行的無懼上傳類進行修改，
'在寫入服務端的最后關鍵使黑客的如意算盤付之東流.目前提供的這個類完全堵上了上傳漏洞，請放心使用！
'詳細使用說明或范例請見下載附件或到本人官方站點下載！
'---------------------------------------------------------------------------------------------
class clsUp '文件上傳類
'------------------------
Dim Form,File
Dim AllowExt_ '允許上傳類型(白名單)
Dim NoAllowExt_ '不允許上傳類型(黑名單)
Private oUpFileStream '上傳的數據流
Private isErr_ '錯誤的代碼,0或true表示無錯
Private ErrMessage_ '錯誤的字符串信息
Private isGetData_ '指示是否已執行過GETDATA過程
'------------------------------------------------------------------
'類的屬性
Public Property Get Version
Version=""
End Property
Public Property Get isErr '錯誤的代碼,0或true表示無錯
isErr=isErr_
End Property
Public Property Get ErrMessage '錯誤的字符串信息
ErrMessage=ErrMessage_
End Property
Public Property Get AllowExt '允許上傳類型(白名單)
AllowExt=AllowExt_
End Property
Public Property Let AllowExt(Value) '允許上傳類型(白名單)
AllowExt_=LCase(Value)
End Property
Public Property Get NoAllowExt '不允許上傳類型(黑名單)
NoAllowExt=NoAllowExt_
End Property
Public Property Let NoAllowExt(Value) '不允許上傳類型(黑名單)
NoAllowExt_=LCase(Value)
End Property
'----------------------------------------------------------------
'類實現代碼
'初始化類
Private Sub Class_Initialize
isErr_ = 0
NoAllowExt="" '黑名單,可以在這里預設不可上傳的文件類型,以文件的后綴名來判斷,不分大小寫,每個每綴名用;號分開,如果黑名單為空,則判斷白名單
NoAllowExt=LCase(NoAllowExt)
AllowExt="" '白名單,可以在這里預設可上傳的文件類型,以文件的后綴名來判斷,不分大小寫,每個后綴名用;號分開
AllowExt=LCase(AllowExt)
isGetData_=false
End Sub
'類結束
Private Sub Class_Terminate
on error Resume Next
'清除變量及對像
Form.RemoveAll
Set Form = Nothing
File.RemoveAll
Set File = Nothing
oUpFileStream.Close
Set oUpFileStream = Nothing
End Sub
'分析上傳的數據
Public Sub GetData (MaxSize)
'定義變量
on error Resume Next
if isGetData_=false then
Dim RequestBinDate,sSpace,bCrLf,sInfo,iInfoStart,iInfoEnd,tStream,iStart,oFileInfo
Dim sFormValue,sFileName
Dim iFindStart,iFindEnd
Dim iFormStart,iFormEnd,sFormName
'代碼開始
If Request.TotalBytes < 1 Then '如果沒有數據上傳
isErr_ = 1
ErrMessage_="沒有數據上傳"
Exit Sub
End If
If MaxSize > 0 Then '如果限制大小
If Request.TotalBytes > MaxSize Then
isErr_ = 2 '如果上傳的數據超出限制大小
ErrMessage_="上傳的數據超出限制大小"
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 (13) & ChrB (10)
'取得每個項目之間的分隔符
sSpace = MidB (RequestBinDate,1, InStrB (1,RequestBinDate,bCrLf)-1)
iStart = LenB(sSpace)
iFormStart = iStart+2
'分解項目
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
'取得表單項目名稱
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 clsFileInfo
'取得文件屬性
iFindStart = InStr (iFindEnd,sInfo,"filename=""",1)+10
iFindEnd = InStr (iFindStart,sInfo,""""&vbCrLf,1)
sFileName = Mid (sinfo,iFindStart,iFindEnd-iFindStart)
oFileInfo.FileName = GetFileName(sFileName)
oFileInfo.FilePath = GetFilePath(sFileName)
oFileInfo.FileExt = GetFileExt(sFileName)
iFindStart = InStr (iFindEnd,sInfo,"Content-Type: ",1)+14
iFindEnd = InStr (iFindStart,sInfo,vbCr)
oFileInfo.FileMIME = Mid(sinfo,iFindStart,iFindEnd-iFindStart)
oFileInfo.FileStart = iInfoEnd
oFileInfo.FileSize = iFormStart -iInfoEnd -2
oFileInfo.FormName = sFormName
file.add sFormName,oFileInfo
else
'如果是表單項目
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
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
isGetData_=true
end if
End Sub
'保存到文件,自動覆蓋已存在的同名文件
Public Function SaveToFile(Item,Path)
SaveToFile=SaveToFileEx(Item,Path,True)
End Function
'保存到文件,自動設置文件名
Public Function AutoSave(Item,Path)
AutoSave=SaveToFileEx(Item,Path,false)
End Function
'保存到文件,OVER為真時,自動覆蓋已存在的同名文件,否則自動把文件改名保存
Private Function SaveToFileEx(Item,Path,Over)
On Error Resume Next
Dim oFileStream
Dim tmpPath
Dim nohack '防黑緩沖
isErr=0
Set oFileStream = CreateObject ("ADODB.Stream")
oFileStream.Type = 1
oFileStream.Mode = 3
oFileStream.Open
oUpFileStream.Position = File(Item).FileStart
oUpFileStream.CopyTo oFileStream,File(Item).FileSize
nohack=split(path,".") '重要修改，防止黑客二進制"01"斷名!!!
tmpPath=nohack(0)&"."&nohack(ubound(nohack)) '重要修改，防止黑客二進制"01"斷名!!!
if Over then
if isAllowExt(GetFileExt(tmpPath)) then
oFileStream.SaveToFile tmpPath,2
Else
isErr_=3
ErrMessage_="該后綴名的文件不允許上傳!"
End if
Else
Path=GetFilePath(Path)
if isAllowExt(File(Item).FileExt) then
do
Err.Clear()
nohack=split(Path&GetNewFileName()&"."&File(Item).FileExt,".") '重要修改，防止黑客二進制"01"斷名!!!
tmpPath=nohack(0)&"."&nohack(ubound(nohack)) '重要修改，防止黑客二進制"01"斷名?。?
oFileStream.SaveToFile tmpPath
loop Until Err.number<1
oFileStream.SaveToFile Path
Else
isErr_=3
ErrMessage_="該后綴名的文件不允許上傳!"
End if
End if
oFileStream.Close
Set oFileStream = Nothing
if isErr_=3 then SaveToFileEx="" else SaveToFileEx=GetFileName(tmpPath)
End Function
'取得文件數據
Public Function FileData(Item)
isErr_=0
if isAllowExt(File(Item).FileExt) then
oUpFileStream.Position = File(Item).FileStart
FileData = oUpFileStream.Read (File(Item).FileSize)
Else
isErr_=3
ErrMessage_="該后綴名的文件不允許上傳!"
FileData=""
End if
End Function
'取得文件路徑
Public function GetFilePath(FullPath)
If FullPath <> "" Then
GetFilePath = Left(FullPath,InStrRev(FullPath, "\"))
Else
GetFilePath = ""
End If
End function
'取得文件名
Public Function GetFileName(FullPath)
If FullPath <> "" Then
GetFileName = mid(FullPath,InStrRev(FullPath, "\")+1)
Else
GetFileName = ""
End If
End function
'取得文件的后綴名
Public Function GetFileExt(FullPath)
If FullPath <> "" Then
GetFileExt = LCase(Mid(FullPath,InStrRev(FullPath, ".")+1))
Else
GetFileExt = ""
End If
End function
'取得一個不重復的序號
Public Function GetNewFileName()
dim ranNum
dim dtNow
dtNow=Now()
ranNum=int(90000*rnd)+10000
GetNewFileName=year(dtNow) & right("0" & month(dtNow),2) & right("0" & day(dtNow),2) & right("0" & hour(dtNow),2) & right("0" & minute(dtNow),2) & right("0" & second(dtNow),2) & ranNum
End Function
Public Function isAllowExt(Ext)
if NoAllowExt="" then
isAllowExt=cbool(InStr(1,";"&AllowExt&";",LCase(";"&Ext&";")))
else
isAllowExt=not CBool(InStr(1,";"&NoAllowExt&";",LCase(";"&Ext&";")))
end if
End Function
End Class
'----------------------------------------------------------------------------------------------------
'文件屬性類
Class clsFileInfo
Dim FormName,FileName,FilePath,FileSize,FileMIME,FileStart,FileExt
End Class
%>
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