public void init(FilterConfig arg0) throws ServletException {
super.init(arg0);
this.config = arg0;
this.RequestEncoding = config.getInitParameter("RequestEncoding");
this.ResponseEncoding = config.getInitParameter("ResponseEncoding");
String refererDefender_ = config.getInitParameter("refererDefender");
boolean refererDefender = StringUtil.getBoolean(refererDefender_, false);
referHelper = new ReferHelper();
referHelper.setRefererDefender(refererDefender);
String wallfilterrules_ = config.getInitParameter("wallfilterrules");
String wallwhilelist_ = config.getInitParameter("wallwhilelist");
String refererwallwhilelist_ = config.getInitParameter("refererwallwhilelist");
String defaultwall = config.getInitParameter("defaultwall");
if (StringUtil.isNotEmpty(wallwhilelist_)) {
String[] wallwhilelist = wallwhilelist_.split(",");
referHelper.setWallwhilelist(wallwhilelist);
}
if (StringUtil.isNotEmpty(wallfilterrules_)) {
String[] wallfilterrules = wallfilterrules_.split(",");
referHelper.setWallfilterrules(wallfilterrules);
} else if (defaultwall != null && defaultwall.equals("true")) {
String[] wallfilterrules = ReferHelper.wallfilterrules_default;
referHelper.setWallfilterrules(wallfilterrules);
}
if (StringUtil.isNotEmpty(refererwallwhilelist_)) {
String[] refererwallwhilelist = refererwallwhilelist_.split(",");
referHelper.setRefererwallwhilelist(refererwallwhilelist);
}
String _checkiemodeldialog = config.getInitParameter("checkiemodeldialog");
if (_checkiemodeldialog != null && _checkiemodeldialog.equals("true"))
this.checkiemodeldialog = true;
mode = config.getInitParameter("mode");
if (mode == null) mode = "0";
}
/* (non-Javadoc)
* @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
*/
public void doFilter(ServletRequest req, ServletResponse res, FilterChain fc)
throws IOException, ServletException {
if (this.config == null) {
return;
}
HttpServletRequest request = (HttpServletRequest) req;
// 是否允许过滤器，
String filterEnabled = request.getParameter("filterEnabled");
HttpServletResponse response = (HttpServletResponse) res;
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Pragma", "no-cache");
response.setDateHeader("Expires", -1);
response.setDateHeader("max-age", 0);
/** 向所有会话cookie 添加“HttpOnly”属性, 解决方案，过滤器中 */
// response.setHeader( "Set-Cookie", "name=value; HttpOnly");
// response.setHeader( "Set-Cookie", "name=value;HttpOnly");
if (referHelper.dorefer(request, response)) {
return;
}
// response.set
if (filterEnabled != null && !filterEnabled.trim().equalsIgnoreCase("true")) {
// fc.doFilter(request, response);
super.doFilter(request, response, fc);
return;
}
// System.out.println("old request:" + request.getClass());
// 模式0：对请求参数编码，对响应编码
// 服务器对url不进行编码
if (mode.equals("0")) {
CharacterEncodingHttpServletRequestWrapper mrequestw =
new CharacterEncodingHttpServletRequestWrapper(
request, RequestEncoding, checkiemodeldialog, referHelper);
CharacterEncodingHttpServletResponseWrapper wresponsew =
new CharacterEncodingHttpServletResponseWrapper(response, ResponseEncoding);
// fc.doFilter(mrequestw, wresponsew);
super.doFilter(mrequestw, wresponsew, fc);
}
// 模式1：对请求参数编码，对响应不编码
// 服务器对url进行编码
else if (mode.equals("1")) {
CharacterEncodingHttpServletRequestWrapper mrequestw =
new CharacterEncodingHttpServletRequestWrapper(
request, RequestEncoding, checkiemodeldialog, referHelper);
request.setCharacterEncoding(RequestEncoding);
// fc.doFilter(request,response);
super.doFilter(request, response, fc);
}
// 其他模式
else {
CharacterEncodingHttpServletRequestWrapper mrequestw =
new CharacterEncodingHttpServletRequestWrapper(
request, this.RequestEncoding, checkiemodeldialog, referHelper);
CharacterEncodingHttpServletResponseWrapper wresponsew =
new CharacterEncodingHttpServletResponseWrapper(response, ResponseEncoding);
// fc.doFilter(mrequestw, wresponsew);
super.doFilter(mrequestw, wresponsew, fc);
}
}