过滤HTML中jiavascript,iframe,frameset以及事件等脚代码,Asp.Net代码库,德仔网

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【Asp.Net】过滤HTML中jiavascript,iframe,frameset以及事件等脚
作者:Dezai.CN / 发布于2011/6/30/ 526
<div> <span style="color: rgb(128,128,128)">///</span><span style="color: rgb(0,128,0)"> </span><span style="color: rgb(128,128,128)"><summary></span><span style="color: rgb(0,128,0)">
 </span><span style="color: rgb(128,128,128)">///</span><span style="color: rgb(0,128,0)"> 过滤HTML中jiavascript,iframe,frameset以及事件等脚本
 </span><span style="color: rgb(128,128,128)">///</span><span style="color: rgb(0,128,0)"> </span><span style="color: rgb(128,128,128)"></summary></span><span style="color: rgb(0,128,0)">
 </span><span style="color: rgb(128,128,128)">///</span><span style="color: rgb(0,128,0)"> </span><span style="color: rgb(128,128,128)"><param name="html"></span><span style="color: rgb(0,128,0)">脚本代码</span><span style="color: rgb(128,128,128)"></param></span><span style="color: rgb(0,128,0)">
 </span><span style="color: rgb(128,128,128)">///</span><span style="color: rgb(0,128,0)"> </span><span style="color: rgb(128,128,128)"><returns></span><span style="color: rgb(0,128,0)">过滤后得脚本代码</span><span style="color: rgb(128,128,128)"></returns></span><span style="color: rgb(128,128,128)">
</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">public</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">string</span><span style="color: rgb(0,0,0)"> FilterScript(</span><span style="color: rgb(0,0,255)">string</span><span style="color: rgb(0,0,0)"> html)
 {
 </span><span style="color: rgb(0,0,255)">if</span><span style="color: rgb(0,0,0)"> (</span><span style="color: rgb(0,0,255)">string</span><span style="color: rgb(0,0,0)">.IsNullOrEmpty(html)) </span><span style="color: rgb(0,0,255)">return</span><span style="color: rgb(0,0,0)"> html;
 Regex regex </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> Regex(</span><span style="color: rgb(128,0,0)">@"</span><span style="color: rgb(128,0,0)"><script[\s\S]+</script *></span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">, RegexOptions.IgnoreCase);
 html </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> regex.Replace(html, </span><span style="color: rgb(128,0,0)">""</span><span style="color: rgb(0,0,0)">); </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">过滤<script></script>标记 </span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)"> Regex regex1 </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> Regex(</span><span style="color: rgb(128,0,0)">@"</span><span style="color: rgb(128,0,0)"> href *= *[\s\S]*script *:</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">, RegexOptions.IgnoreCase);
 html </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> regex1.Replace(html, </span><span style="color: rgb(128,0,0)">""</span><span style="color: rgb(0,0,0)">); </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">过滤href=javascript: (<A>) 属性 </span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)"> Regex regex2 </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> Regex(</span><span style="color: rgb(128,0,0)">@"</span><span style="color: rgb(128,0,0)"> on(mouseover|mouseon|mouseout|click|dblclick|blur|focus|change)*=</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">, RegexOptions.IgnoreCase);
 html </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> regex2.Replace(html, </span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(128,0,0)"> _disibledevent=</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">); </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">过滤其它控件的on...事件 </span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)"> Regex regex3 </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> Regex(</span><span style="color: rgb(128,0,0)">@"</span><span style="color: rgb(128,0,0)"><iframe[\s\S]+</iframe *></span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">, RegexOptions.IgnoreCase);
 html </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> regex3.Replace(html, </span><span style="color: rgb(128,0,0)">""</span><span style="color: rgb(0,0,0)">); </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">过滤iframe </span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)"> Regex regex4 </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> Regex(</span><span style="color: rgb(128,0,0)">@"</span><span style="color: rgb(128,0,0)"><frameset[\s\S]+</frameset *></span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">, RegexOptions.IgnoreCase);
 html </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> regex4.Replace(html, </span><span style="color: rgb(128,0,0)">""</span><span style="color: rgb(0,0,0)">); </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">过滤frameset </span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)"> Regex regex5 </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> Regex(</span><span style="color: rgb(128,0,0)">@"</span><span style="color: rgb(128,0,0)">(Javascript|javascript):</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">, RegexOptions.IgnoreCase);
 html </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> regex5.Replace(html, </span><span style="color: rgb(128,0,0)">""</span><span style="color: rgb(0,0,0)">); </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">过滤所有javascript </span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)"> Regex regex6 </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> Regex(</span><span style="color: rgb(128,0,0)">@"</span><span style="color: rgb(128,0,0)">:*expression</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">, RegexOptions.IgnoreCase);
 html </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> regex6.Replace(html, </span><span style="color: rgb(128,0,0)">""</span><span style="color: rgb(0,0,0)">); </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">过滤所有javascript </span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)"> Regex regex7 </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> Regex(</span><span style="color: rgb(128,0,0)">@"</span><span style="color: rgb(128,0,0)"><!--[\s\S]*--></span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">, RegexOptions.IgnoreCase);
 html </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> regex7.Replace(html, </span><span style="color: rgb(128,0,0)">""</span><span style="color: rgb(0,0,0)">); </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">过滤所有HTML说明标签 </span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">return</span><span style="color: rgb(0,0,0)"> html;
 }
</span></div>
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