技术资料 > ASP技术 > 邮件相关 : 使用asp实现支持附件的邮件系统（二）

使用asp实现支持附件的邮件系统（二）

March 25,2004

这次讲到的是处理发送的页面，前一部分是得到发送者ip地址和mac地址，并且禁止用户自己更改自己ip地址的代码，因为我们的系统是需要对个人修改ip的行为进行禁止的。

<%
strIP = Request.ServerVariables("REMOTE_ADDR")

Set net = Server.CreateObject("wscript.network")
Set sh = Server.CreateObject("wscript.shell")
sh.run "%comspec% /c nbtstat -A " & strIP & " > c:" & strIP & ".txt",0,true
Set sh = nothing
Set fso = createobject("scripting.filesystemobject")
Set ts = fso.opentextfile("c:" & strIP & ".txt")
macaddress = null
Do While Not ts.AtEndOfStream
data = ucase(trim(ts.readline))
If instr(data,"MAC ADDRESS") Then
macaddress = trim(split(data,"=")(1))
Exit Do
End If
loop
ts.close
Set ts = nothing
fso.deletefile "c:" & strIP & ".txt"
Set fso = nothing
GetMACAddress = macaddress
strMac = GetMACAddress
set conn=server.CreateObject("adodb.connection")
conn.open "DSN=;UID=;PWD="
dsnpath="DSN=;UID=;PWD="
set rs=server.CreateObject("adodb.recordset")
sele="select * from getmac where  g_mac='"&strMac&"'"

rs.open sele,dsnpath
if  rs.bof then
set conn=server.CreateObject("adodb.connection")
conn.open "DSN=;UID=;PWD="
dsnpath="DSN=;UID=;PWD="
set rs=server.CreateObject("adodb.recordset")
g_id=mid(strIP,9)
g_id=left(g_id,2)
'response.write g_id
if isnumeric(g_id) then
g_id=cint(g_id)
else
g_id=0
end if
      sele="insert into getmac(g_ip,g_mac,g_id,g_ok) values('"&strIP&"','"&strMac&"',"&g_id&",0)"
rs.open sele,dsnpath
else
   set conn=server.CreateObject("adodb.connection")
   conn.open "DSN=;UID=;PWD="
   dsnpath="DSN=;UID=;PWD="
   set rs=server.CreateObject("adodb.recordset")

   sele="select * from getmac where g_ip='"&trim(strIP)&"' and g_mac='"&trim(strMac)&"'"
   rs.open sele,dsnpath

      if rs.bof or rs.eof then
   set rs1=server.CreateObject("adodb.recordset")
   sele="insert into badmac(ip, mac ,thetime) values('"&strIP&"','"&strMac&"','"&now()&"')"
   rs1.open sele,dsnpath
response.redirect("/reg/wrong.asp")
response.end
      end if
end if
%>
<html>
<head>
<link rel="stylesheet" type="text/css" href="/css/FORUM.CSS">
<style type=text/css>

</style>
<title>邮件系统</title></head><body bgcolor="#FEF7ED">
<%
Response.Expires=0
Function bin2str(binstr)
Dim varlen,clow,ccc,skipflag

skipflag=0
ccc = ""
If Not IsNull(binstr) Then
      varlen=LenB(binstr)
      For i=1 To varlen
         If skipflag=0 Then
            clow = MidB(binstr,i,1)
            If AscB(clow) > 127 Then
                  ccc =ccc & Chr(AscW(MidB(binstr,i+1,1) & clow))
                  skipflag=1
            Else
                  ccc = ccc & Chr(AscB(clow))
            End If
         Else
            skipflag=0
         End If
      Next
End If
bin2str = ccc
End Function

varByteCount = Request.TotalBytes
'response.write varbytecount

bnCRLF = chrB( 13 ) & chrB( 10 )

binHTTPHeader=Request.BinaryRead(varByteCount)

'response.write vbenter
'response.write "<br><br>"& cstr(binhttpheader) &"<br><br>"

sread=0
eread=0

'开始读非文件域的数据
      set conn = Server.CreateObject("ADODB.Connection")
      conn.open "DSN=;UID=;PWD="

         SQL="select * from t_mail where mailid=0"
         set rs=server.CreateObject("ADODB.Recordset")
         rs.Open sql,conn,3,3
         rs.addnew
         rs("emaillevel")=0
         rs("receempl")=""
Do while lenB(binHTTPHeader)>46

Divider = LEFTb( binHTTPHeader,  INSTRB( binHTTPHeader, bnCRLF ) - 1 )
binHeaderData = Leftb(binHTTPHeader, INSTRB( binHTTPHeader, bnCRLF & bnCRLF )-1)
strHeaderData=bin2str(binHeaderData)

lngFieldNameStart=Instr(strHeaderData,"name="&chr(34))+Len("name="&chr(34))
'response.write "<br>lngfieldnamestart:"&lngfieldnamestart
lngFieldNameEnd=Instr(lngFieldNameStart,strHeaderData,chr(34))
'response.write "<br>lngfieldnameEND:"&lngfieldnameEND

strFieldName=Mid(strHeaderData,lngFieldNameStart,lngFieldNameEnd-lngFieldNameStart)

'RESPOnSE.WRITE "<BR>STRFIELDNAME:" & STRfieldname

strFieldName=Trim(strFieldName)

strFieldName=Replace(strFieldName,vbcrlf,vbnullstring)

      '判断文件数据时候开始

If strComp(strFieldName,"FileUploadStart",1)=0 and sread=0 Then
      'response.write "找到了文件开始的地方"
      sread=1
      'response.write "<br>" & INSTRB( DataStart + 1, binHTTPHeader, divider ) &"<br>"
      binHTTPHeader=MIDB(binHTTPHeader,INSTRB( DataStart + 1, binHTTPHeader, divider ))
      exit do
End if
DataStart = INSTRB( binHTTPHeader, bnCRLF & bnCRLF ) + 4
DataEnd = INSTRB( DataStart + 1, binHTTPHeader, divider ) - DataStart

binFieldValue=MIDB( binHTTPHeader, DataStart, DataEnd )
strFieldValue=bin2str(binFieldValue)

'strFieldValue=Trim(strFieldValue)

strFieldValue=Replace(strFieldValue,"  ","  ")

'非文件上传域变量赋值
'execute strFieldName&"="""&strFieldValue&""""
'response.write strFieldName&":"&strFieldValue&"<br>"

if strfieldname="geterempl" then
   strFieldValue=Replace(strFieldValue,vbcrlf,vbnullstring)
   if instr(strfieldvalue,"gr:")=1 then
         '邮件组发

         'response.write len(trim(strfieldvalue))
         if len(trim(strfieldvalue))<>6 then
            '格式错误返回
            %>

            尝试发送邮件，但是失败了，请修改错误后重试！
            <script language="javascript">
                     alert("您输入的收件组格式错误！r正确的格式是:'gr:001'");
                     history.back();
            </script>
            <p>
            <%
            response.end
         else
            if not isnumeric(mid(trim(strfieldvalue),4)) then
            '格式错误返回
            %>

            尝试发送邮件，但是失败了，请修改错误后重试！
            <script language="javascript">
                     alert("您输入的收件组格式错误！r正确的格式是:'gr:001'");
                     history.back();
            </script>
            <p>
            <%
            response.end
            else
            thegroup=(mid(trim(strfieldvalue),4))
            end if
         end if

         tmpSQL="select * from t_group where owner='"&session("myid")&"' and groupidowner='"&thegroup&"'"
         'response.write tmpsql
         set tmprs=server.CreateObject("ADODB.Recordset")
         tmprs.Open tmpsql,conn
         if tmprs.bof or tmprs.eof then
            '没有找到该组
            %>
            尝试发送邮件，但是失败了，请修改错误后重试！
            <script language="javascript">
                     alert("您输入的收件组<%=thegroup%>没有找到！");
                     history.back();
            </script>
            <p>
            <%
            response.end
         else
            if tmprs("personnum")=0 then
            '组内没有用户
            %>
            尝试发送邮件，但是失败了，请修改错误后重试！
            <script language="javascript">
                     alert("您输入的收件组<%=thegroup%>中目前没有任何的用户n所以不能发送");
                     history.back();
            </script>
            <p>
            <%
            response.end
            else
               strFieldValue=trim(tmprs("groupempl"))
               tmprs.close
               set tmprs=nothing
            end if
         end if
      end if

      if instr(strfieldValue,"|") then
         '组发
         allsearch=replace(trim(strfieldValue),"|","','")
         allsearch="'"&allsearch&"'"
         tmpstring=trim(strfieldValue)&"|"
         tosearch=""
         do while len(tmpstring)>=5

               tosearch=left(tmpstring,5)
                              tmpstring=mid(tmpstring,7)
            if instr(tosearch,"|") then
                  '格式错误
            %>
            尝试发送邮件，但是失败了，请修改错误后重试！
            <script language="javascript">
                     alert("您输入的收件人格式错误!");
                     history.back();
            </script>
            <p>
            <%
            response.end
            end if

            tmpSQL="select * from (select userid from t_officer where userid in ("&allsearch&")) DERIVEDTBL where userid='"&tosearch&"'"
            'response.write tmpsql
            set tmprs=server.CreateObject("ADODB.Recordset")
            tmprs.Open tmpsql,conn
            if tmprs.eof or tmprs.bof then
            %>
            尝试发送邮件，但是失败了，请修改错误后重试！
            <script language="javascript">
                     alert("您输入的收件人<%=tosearch%>没有找到!");
                     history.back();
            </script>
            <p>
            <%
            response.end
            end if
            tmprs.close
            set tmprs=nothing
         loop
         strfieldValue=trim(strFieldValue)

      else
         if len(trim(strFieldValue))<>5 then
            '格式不正确
            %>
            尝试发送邮件，但是失败了，请修改错误后重试！
            <script language="javascript">
                     alert("您输入的收件人<%=trim(strFieldValue)%>不正确!");
                     history.back();
            </script>
            <p>
            <%
            response.end
         else
            if isnumeric(trim(len(strFieldValue))) then


                  tmpSQL="select * from t_officer where userid='"&trim(strFieldValue)&"'"

                  set tmprs=server.CreateObject("ADODB.Recordset")
                  tmprs.Open tmpsql,conn
                  if tmprs.eof or tmprs.bof then
            %>
            尝试发送邮件，但是失败了，请修改错误后重试！
            <script language="javascript">
                     alert("您输入的收件人<%=trim(strFieldValue)%>没有找到r该员工可能还没有注册!");
                     history.back();
            </script>
            <p>
            <%
            response.end
                  end if
                  tmprs.close
                  set tmprs=nothing


               strfieldValue=trim(strFieldValue)
            else
            %>
            尝试发送邮件，但是失败了，请修改错误后重试！
            <script language="javascript">
                     alert("您输入的收件人<%=trim(strFieldValue)%>不正确!");
                     history.back();
            </script>

<p> <%
            response.end
            end if
         end if
      end if

end if
strFieldValue=replace(strFieldValue,"<","<")
'response.write strfieldname
rs(STRFIELDNAME)=replace(strFieldValue,">",">")

binHTTPHeader=MIDB(binHTTPHeader,INSTRB( DataStart + 1, binHTTPHeader, divider ))

loop
'开始处理文件数据

titem=0
rs("filesize_1")=0
rs("filesize_2")=0
rs("filesize_3")=0


Do while lenB(binHTTPHeader)>46

if INSTRB( binHTTPHeader, bnCRLF & bnCRLF )<>0 then
   binHeaderData = LeftB(binHTTPHeader,INSTRB( binHTTPHeader, bnCRLF & bnCRLF )-1)
else
   exit do
end if
strHeaderData=bin2str(binHeaderData)

'读取上传文件的Content-Type
lngFileContentTypeStart=Instr(strHeaderData,"Content-Type:")+Len("Content-Type:")
strFileContentType=Trim(Mid(strHeaderData,lngFileContentTypeStart))
strFileContentType=Replace(strFileContentType,vbCRLF,vbNullString)

'读取上传的文件名
if instr(strheaderdata,"filename=")>0 then
      lngFileNameStart=Instr(strHeaderData,"filename="&chr(34))+Len("filename="&chr(34))
      lngFileNameEnd=Instr(lngFileNameStart,strHeaderData,chr(34))
      strFileName=Mid(strHeaderData,lngFileNameStart,lngFileNameEnd-lngFileNameStart)
      strFileName=Trim(strFileName)
      strFileName=Replace(strFileName,vbCRLF,vbNullString)
else
      strfilename=""
end if

'读取上传文件数据
DataStart = INSTRB( binHTTPHeader, bnCRLF & bnCRLF ) + 4
DataEnd = INSTRB( DataStart + 1, binHTTPHeader, divider ) - DataStart

If strFileName<>"" Then
      if dataend>0 then
         binFieldValue=MIDB( binHTTPHeader, DataStart, DataEnd )
         '将上传的文件写入数据库
         titem=titem+1
         'response.write "titem:"&titem
         rs("FileContentType_"&titem)=strFileContentType
         rs("FileContent_"&titem).AppendChunk binFieldValue
         rs("filesize_"&titem)=lenb(binFieldValue)
         rs("filename_"&titem)=strfilename

      else
         binfieldvalue=binhttpheader
      end if

      End if

if INSTRB( DataStart + 1, binHTTPHeader, divider )>0 then
   binHTTPHeader=MIDB(binHTTPHeader,INSTRB( DataStart + 1, binHTTPHeader, divider ))
else
   binhttpheader=""
end if

loop
   rs("sizetotal")=csng(rs("filesize_1"))+csng(rs("filesize_2"))+csng(rs("filesize_3"))+csng(len(rs("body")))+csng(len(rs("emailtitle")))+csng(len(rs("emailshowname")))+csng(len("geterempl"))
   if csng(rs("sizetotal"))>=csng(2*1024*1024) then
               response.write "对不起,文件太大，请保证每封邮件的总大小不超过2M!"
               response.end
   end if
   rs("mailtime")=now
   rs("readerempl")=""
   if rs("receempl")<>"" then
         rs("receempl")=session("myid")
         rs("readerempl")=session("myid")
   end if
   rs("deleempl")=""
   rs("deleverempl")=""
   rs("sendmac")=strmac
   rs.update
   rs.close
   set rs=Nothing
   conn.Close
   set conn=Nothing

%>
<script language=javascript>
  window.open("mailok.asp",target="_self")
</script>
</body></html>