使用asp实现支持附件的邮件系统(二)

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>
<!--
input {  font-size: 9pt; color: #0011dd; background-color: #e9e9f9; padding-top: 0px}
select {  font-size: 9pt; color: #0011dd; background-color: #e9e9f9; padding-top: 0px}
textarea {  font-size: 9pt; color: #0011dd; background-color: #e9e9f9; padding-top: 0px}
-->
</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>

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