Print the actual contents of the byte arrays for debugging.

diff --git a/gss/src/gr/ebs/gss/server/Login.java b/gss/src/gr/ebs/gss/server/Login.java
index c47555e..359a637 100644 (file)
--- a/gss/src/gr/ebs/gss/server/Login.java
+++ b/gss/src/gr/ebs/gss/server/Login.java
@@ -30,6 +30,7 @@ import java.io.IOException;
 import java.io.PrintWriter;
 import java.net.URL;
 import java.net.URLEncoder;
+import java.util.Formatter;
 
 import javax.naming.Context;
 import javax.naming.InitialContext;
@@ -124,7 +125,7 @@ public class Login extends HttpServlet {
                        buf = new StringBuilder("Shibboleth Attributes as bytes\n");
                        for (String attr: attrs)
                                if (request.getAttribute(attr) != null)
-                                       buf.append(attr+": ").append(request.getAttribute(attr).toString().getBytes("UTF-8")).append('\n');
+                                       buf.append(attr+": ").append(getHexString(request.getAttribute(attr).toString().getBytes("UTF-8"))).append('\n');
                        logger.debug(buf);
                }
                User user = null;
@@ -285,4 +286,17 @@ public class Login extends HttpServlet {
                    out.println("</CENTER></BODY></HTML>");
                }
        }
+
+       /**
+        * A helper method that converts a byte buffer to a printable list of
+        * hexadecimal numbers.
+        */
+       private String getHexString(byte[] buffer) {
+               StringBuilder sb = new StringBuilder();
+               Formatter formatter = new Formatter(sb);
+               for (int i=0; i<buffer.length; i++)
+                       formatter.format("0x%x, ", buffer[i]);
+               return sb.toString();
+       }
+
 }