1 files changed, 83 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/crypto/sasl/anonymous/AnonymousUtil.java b/libjava/classpath/gnu/javax/crypto/sasl/anonymous/AnonymousUtil.java
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index 000000000..bb59779d6
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+++ b/libjava/classpath/gnu/javax/crypto/sasl/anonymous/AnonymousUtil.java
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+/* AnonymousUtil.java --
+   Copyright (C) 2003, 2006 Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or (at
+your option) any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.  */
+
+
+package gnu.javax.crypto.sasl.anonymous;
+
+import gnu.javax.crypto.sasl.SaslUtil;
+
+/**
+ * An ANONYMOUS-specific utility class.
+ */
+public class AnonymousUtil
+{
+  /** Trivial private constructor to enforce Singleton pattern. */
+  private AnonymousUtil()
+  {
+    super();
+  }
+
+  static boolean isValidTraceInformation(String traceInformation)
+  {
+    if (traceInformation == null)
+      return false;
+    if (traceInformation.length() == 0)
+      return true;
+    if (SaslUtil.validEmailAddress(traceInformation))
+      return true;
+    return isValidToken(traceInformation);
+  }
+
+  static boolean isValidToken(String token)
+  {
+    if (token == null)
+      return false;
+    if (token.length() == 0)
+      return false;
+    if (token.length() > 255)
+      return false;
+    if (token.indexOf('@') != -1)
+      return false;
+    for (int i = 0; i < token.length(); i++)
+      {
+        char c = token.charAt(i);
+        if (c < 0x20 || c > 0x7E)
+          return false;
+      }
+    return true;
+  }
+}