ASP升级程序

<%
‘’文件名：updata.asp
‘’远程地址
const url="http://localhost/test/"

action=request("action")
if action="updata" then
download(url&"config.txt")
download(url&"pack.jpg")
response.Write("下载成功<a href=‘’updata.asp?action=install‘’>安装</a>")
elseif action="install" then
str=openfile("config.txt")
if str="" then
response.write "缺少本地配置文件config.txt"
else
size=RegExpTest("size",str)
call install("pack.jpg",size)
end if
else
str=getpage(url&"config.txt")
if str="" then
response.write "不存在可用更新或者本地配置不正确"
response.end
end if

str1=openfile("config.txt")
if str1="" then
response.write "缺少本地配置文件config.txt无法获知本地程序的安装时间"
response.end
end if

updatatime=RegExpTest("time",str)
updatatime1=RegExpTest("time",str1)

if DateDiff("d",updatatime1,updatatime)>0 then
response.Write("存在可用更新，更新日期："&updatatime&"<a href=‘’updata.asp?action=updata‘’>下载</a>")
else
response.write "您的程序是最新的了"
end if
end if

function openfile(filename)
set fso=server.CreateObject("scripting.filesystemobject")
if fso.fileexists(server.MapPath(filename)) then
set f1=fso.opentextfile(server.mappath(filename),1,true)
openfile=f1.readall
f1.close
else
openfile=""
end if
set fso=nothing
end function

function getpage(url)
set xmlhttp=server.createobject("Microsoft.XMLHTTP")
xmlhttp.open "get",url,false
xmlhttp.send
if xmlhttp.status<>200 then
getpage=""
else
getpage=bytes2BSTR(xmlhttp.ResponseBody)
end if
end function

Function bytes2BSTR(vIn)
dim strReturn
dim i,ThisCharCode,NextCharCode
strReturn = ""
For i = 1 To LenB(vIn)
ThisCharCode = AscB(MidB(vIn,i,1))
If ThisCharCode < &H80 Then
strReturn = strReturn & Chr(ThisCharCode)
Else
NextCharCode = AscB(MidB(vIn,i+1,1))
strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 + CInt(NextCharCode))
i = i + 1
End If
Next
bytes2BSTR = strReturn
End Function

Function RegExpTest(patrn,strng)
Dim regEx,Match,Matches‘’建立变量。
Set regEx = New RegExp‘’建立正则表达式。
regEx.Pattern = patrn&"=(.+?)\n"‘’设置模式。
regEx.IgnoreCase = True‘’设置是否区分字符大小写。
regEx.Global = True‘’设置全局可用性。
Set Matches = regEx.Execute(strng)‘’执行搜索。
For Each Match in Matches‘’遍历匹配集合。
RetStr = Match.Value
Next
RegExpTest = replace(RetStr,patrn&"=","")
End Function

function download(url)
temp=split(url,"/")
filename=temp(ubound(temp))
set xmlhttp=server.createobject("Microsoft.XMLHTTP")
xmlhttp.open "get",url,false
xmlhttp.send
if xmlhttp.status<>200 then
download=""
else
set fso=server.createobject("scripting.filesystemobject")
if fso.fileexists(server.mappath(filename)) then
fso.deletefile(server.mappath(filename))
end if
set fso=nothing
img=xmlhttp.ResponseBody
set objAdostream=server.createobject("ADODB.Stream")
objAdostream.Open
objAdostream.type=1
objAdostream.Write(img)
objAdostream.SaveToFile(server.mappath(filename))
objAdostream.SetEOS
set objAdostream=nothing
download=filename
end if
set xmlhttp=nothing
end function


function install(filename,size)
on error resume next
path=server.mappath("./")

set fso=server.createobject("scripting.filesystemobject")

set s=server.createobject("adodb.stream")
set s1=server.createobject("adodb.stream")
set s2=server.createobject("adodb.stream")

s.open
s1.open
s2.open

s.type=1
s1.type=1
s2.type=1

s.loadfromfile(server.mappath(filename))
s.position=size
s1.write(s.read)
s1.position=0
s1.type=2
s1.charset="gb2312"
s1.position=0
a=split(s1.readtext,vbcrlf)
s.position=0

i=0
while(i<ubound(a))
b=split(a(i),">")
if b(0)="folder" then
if not fso.folderexists(path&b(2)) then
fso.createfolder(path&b(2))
end if
elseif b(0)="file" then
if fso.fileexists(path&b(2)) then
fso.deletefile(path&b(2))
end if
s2.position=0
s2.write(s.read(b(1)))
s2.seteos
s2.savetofile(path&b(2))
end if
i=i+1
wend

s.close
s1.close
s2.close
set s=nothing
set s1=nothing
set s2=nothing
set fso=nothing
if err.number<>0 then
response.write err.description
else
response.write "安装成功"
end if
end function

%>




--------------------------------------------------------------------------------


<%
‘’文件名称：pack.asp
on error resume next
set fso=server.createobject("scripting.filesystemobject")
if fso.fileexists(server.mappath("./pack.jpg")) then
response.Write("pack.jpg已经存在")
response.End()
end if

dim str,s,s1,s2
set s=server.createobject("ADODB.Stream")
set s1=server.createobject("ADODB.Stream")
set s2=server.createobject("ADODB.Stream")

s.Open
s1.Open
s2.Open

s.Type=1
s1.type=1
s2.Type=2

call WriteFile(server.MapPath("./"))

s2.charset="gb2312"
s2.WriteText(str)
s2.Position=0
s2.type=1
s2.Position=0
bin=s2.Read

s2.Position=0
s2.type=2
s2.writeText("time="&now&vbcrlf)
s2.writeText("size="&s1.size&vbcrlf)
s2.writeText("run="&request.Form("run")&vbcrlf)
s2.seteos
s2.savetofile(server.mappath("./config.txt"))

s1.write(bin)
s1.SetEOS
s1.SaveToFile(server.mappath("./pack.jpg"))

s.close
s1.close
s2.close

set s=nothing
set s1=nothing
set s2=nothing

if err.number<>0 then
response.write err.description
else
response.Write("完成")
end if

Function WriteFile(folderspec)
Set fso = CreateObject("Scripting.FileSystemObject")
Set f = fso.GetFolder(folderspec)

Set fc = f.Files
For Each f1 in fc
if f1.name<>"pack.asp" then
str=str&"file>"&f1.size&">"&replace(folderspec&"\"&f1.name,server.MapPath("./"),"")&vbcrlf
s.LoadFromFile(folderspec&"\"&f1.name)
img=s.Read()
s1.Write(img)
end if
Next

Set fc = f.SubFolders
For Each f1 in fc
str=str&"folder>0>"&replace(folderspec&"\"&f1.name,server.MapPath("./"),"")&vbcrlf
WriteFile(folderspec&"\"&f1.name)
Next

set fso=nothing
End Function
%>



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ASP升级程序使用说明

本程序分两部分：
1、ASP文件打包程序pack.asp
把这个程序和要打包的程序放到一个目录下，然后运行pack.asp，得到pack.jpg和config.txt
2、ASP在线更新、下载、安装程序updata.asp
这个程序可以用来检查是否存在可用更新，和updata.asp同一目录要存在上面得到的config.txt，因为config里面有当前程序的安装日期，用来和网上的程序比较用的。
使用前，先修改updata.asp里的url变量的值，使其等于你存放升级程序的URL，运行updata.asp就可查看是否存在可用更新，如果存在就可用按着向导一步一步下载并安装更新了。

远程地址url下面存放用pack.asp得到的pack.jpg和config.txt

本程序既可以用来做升级程序，当然如果原来安装目录下是空的，那就是一个完整的安装程序，^_^,也可以把updata.asp放到后台的首页里，这样每次登陆都可以自动检查是否有可用更新

注意：本地或者远程没有config.txt会导致程序不可用，以后会考虑加入这个容错机制。

原文转自：http://www.ltesting.net