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使用asp实现支持附件的邮件系统(二)

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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>

                        ————-sonic

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