原发于http://www.linux-ch.com/post-25.html

现有一文件分享系统,利用nginx平台直接打开目录功能,可自由浏览并选择文件进行下载.同时开通ftp,可以上传文件与大家分享.这一切实现起 来并不困难,但在一段时间后发现分享系统的流量较高,后通过分析日志发现竟然是来自各地迅雷的链接.在这之后我曾将迅雷的agent给过滤掉,效果还不 错,但随之而来的问题是:平时我们也在使用迅雷,对于小文件没什么影响,但对于动不动就上G的文件,对于浏览器的下载功能是个严酷的考验. 现在利用ngx_http_accesskey_module模块,并配合php,一个能防止下载工具我链接分享功能的文件分享系统复活了~

    nginx的编译配置请参考http://wiki.nginx.org/NginxHttpAccessKeyModule

    下面分享下关于我的配置:

     nginx:

        location /downloads {
#                autoindex on;
#                autoindex_localtime on;
#                autoindex_exact_size off;
                accesskey             on;
                accesskey_hashmethod  md5;
                accesskey_arg         "key";
                accesskey_signature   "mypass$remote_addr";
        }
 

 

php源码:

<?php
$downfile=$_GET["downfile"];
$dir0='/web/html/downloads';
$dir1=str_replace('..','',$_GET['dir1']);
$dir=$dir0.$dir1;

if ($downfile) {
        $filename =basename($downfile);
        $file=fopen($dir."/".$filename,"rb");
        Header("Content-type: application/octet-stream");
        Header("Accept-Ranges: bytes");
        Header("Accept-Length: ".filesize($dir."/".$filenamee));
        Header("Content-Disposition: p_w_upload; filename=".$filename);
        echo fread($file,filesize($dir."/".$filename));
        fclose($file);
        exit;
}
?>

<title>SZA</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8";>
<STYLE type="text/css">
body {font-family: "sans-serif", "serif"; font-size: 12px;}
BODY { background-color:#A2B5CD }
a:link {color: #BFEFFF; text-decoration: none}
a:visited {color: #080808; text-decoration: none}
a:hover {color: #FFFFFF; text-decoration: underline}
input {font-family: "sans-serif", "serif";font-size: 12px;}
td {font-family: "sans-serif", "Verdana"; font-size: 12px;}
.title {font-family: "Verdana", "Tahoma";font-size: 20px;font-weight: bold; color=black}
</STYLE>
</head>
<body>
<table width="100%"  cellspacing="1" cellpadding="3">
  <tr>
    <td class="title" align="center">神州IT架构文件分享系统</td>
  </tr>
  <tr><td align="right">上传请转至ftp,帐号:ftp 密码:ftpkey  </td></tr>
</table>
<hr>
<table width="100%"  cellspacing="1" cellpadding="3">
<?php
$ipkey= md5("mypass".$_SERVER['REMOTE_ADDR']);
        echo '<form action="" method="post">';
        echo '<tr>';
        echo '<td>例如你现在的一个链接是:"https://www.linux-ch.com/downloads/iso/rhel- server-6.0-i386-dvd.iso<font color="red">?key=d85b4aa593bkdkfia450ce6a55766e6b"</font></td>';
        echo '<tr><td>只要将后面的"<font color="red">?key=d85b4aa593bkdkfia450ce6a55766e6b</font>"删除掉,再提 交到下面进行更新>就行了</td></tr>';
        echo '<td>';
        echo "输入需要更新的链接：";
        echo '<input type="text" name="url" style="font-family:Verdana,Arial; font-size: 9pt; width:60%">';
        echo '<input type="submit" value="更新" style="font-family:Verdana,Arial; font-size: 9pt;background-color:#A2B5CD ">';
        echo '</td>';
        echo '</tr>';
        echo '<tr>'; 
        $durl=$_POST['url'];   
        if (!isset($durl) or empty($durl)) {
                echo " <td> </td></tr>\n";
        } else {
                echo "<tr><td>新的下载地址是: </td></tr>\n";
                echo "<tr><td><a href=\"".($durl)."?key=".$ipkey."\">".($durl)."?key=".$ipkey." </a></td></tr>\n";
        }
        echo "</tr>\n";
        echo '</form>';
        echo '<tr>';
        echo '<td><b>';
        echo "文件列表:";
        echo '</b></td>';
        echo '</tr>';
?>
</table>
<table width="100%" border="0" cellpadding="3" cellspacing="1">
<?php
$dirs=@opendir($dir);
while ($file=@readdir($dirs)) {
        $b="$dir/$file";
        $a=@is_dir($b);
        if($a=="1"){
                if($file!=".."&&$file!=".")  {
                        echo "<tr>\n";
                        echo "  <td><a href=\"?dir1=".rawurlencode($dir1)."/".rawurlencode($file)."\">$file</a></td>\n";
                        echo "</tr>\n";
                } else {
                        echo "\n";
                }
        }
}
@closedir($dirs);
$dirs=@opendir($dir);
while ($file=@readdir($dirs)) {
        $b="$dir/$file";
        $a=@is_dir($b);
        if($a=="0"){
//                $size=@filesize("$dir/$file");
                $size = exec ('stat -c %s '. escapeshellarg ("$dir/$file"));
                if($size >= 1073741824) {
                        $size = round($size / 1073741824 * 100) / 100 . " GB";
                } elseif($size >= 1048576) {
                        $size = round($size / 1048576 * 100) / 100 . " MB";
                } elseif($size >= 1024) {
                        $size = round($size / 1024 * 100) / 100 . " KB";
                } else {
                        $size = $size . " B";
                }
//                $lastsave=@date("Y-n-d H:i:s",filemtime("$dir/$file"));
                $lastsave=@date("Y-n-d H:i:s",exec('date +%s -r'. escapeshellarg ("$dir/$file")));
        echo "<tr>\n";
        echo "<td>$file</td>\n";
        echo "<td>$lastsave</td>\n";
        echo "<td>$size</td>\n";
        echo "<td><a href=\" https://www.linux-ch.com/downloads".rawurlencode($dir1)." /".rawurlencode($file)."?key=".$ipkey."\">[下载]</a></td> \n";
        echo "</tr>\n";
        }
}
@closedir($dirs);
?>
</table>
</body>
</html>

    源码原来是使用urlencode这个参数对链接进行转换的,遇到空格就出问题,后改用rawurlencode将问题解决.

    php的源码是在网上找回来修改加工的,在此我要感谢3t,有他的帮助我才能改好这些文件,当然也要感谢将源码发布出来前辈,这样我才有机会去修改这些,谢谢.