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      1 /*
      2  *  Licensed to the Apache Software Foundation (ASF) under one or more
      3  *  contributor license agreements.  See the NOTICE file distributed with
      4  *  this work for additional information regarding copyright ownership.
      5  *  The ASF licenses this file to You under the Apache License, Version 2.0
      6  *  (the "License"); you may not use this file except in compliance with
      7  *  the License.  You may obtain a copy of the License at
      8  *
      9  *     http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *  See the License for the specific language governing permissions and
     15  *  limitations under the License.
     16  */
     17 
     18 package org.apache.harmony.xnet.provider.jsse;
     19 
     20 import java.io.PrintStream;
     21 import java.security.AccessController;
     22 import java.security.PrivilegedAction;
     23 
     24 /**
     25  * This class provides debug logging for JSSE provider implementation
     26  * TODO: Use java.util.logging
     27  */
     28 public class Logger {
     29 
     30     public static class Stream extends PrintStream {
     31         private final String prefix;
     32         private static int indent = 0;
     33 
     34         public Stream(String name) {
     35             super(System.err);
     36             prefix = name + "["+Thread.currentThread().getName()+"] ";
     37         }
     38 
     39         @Override
     40         public void print(String msg) {
     41             for (int i=0; i<indent; i++) {
     42                 super.print("  ");
     43             }
     44             super.print(msg);
     45         }
     46 
     47         public void newIndent() {
     48             indent ++;
     49         }
     50 
     51         public void endIndent() {
     52             indent --;
     53         }
     54 
     55         @Override
     56         public void println(String msg) {
     57             print(prefix);
     58             super.println(msg);
     59         }
     60 
     61         public void print(byte[] data) {
     62             printAsHex(16, " ", "", data, 0, data.length);
     63         }
     64 
     65         public void print(byte[] data, int offset, int len) {
     66             printAsHex(16, " ", "", data, offset, len);
     67         }
     68 
     69         public void printAsHex(int perLine,
     70                 String prefix,
     71                 String delimiter,
     72                 byte[] data) {
     73             printAsHex(perLine, prefix, delimiter, data, 0, data.length);
     74         }
     75 
     76         public void printAsHex(int perLine,
     77                 String prefix,
     78                 String delimiter,
     79                 byte[] data, int offset, int len) {
     80             String line = "";
     81             for (int i=0; i<len; i++) {
     82                 String tail =
     83                     Integer.toHexString(0x00ff & data[i+offset]).toUpperCase();
     84                 if (tail.length() == 1) {
     85                     tail = "0" + tail;
     86                 }
     87                 line += prefix + tail + delimiter;
     88 
     89                 if (((i+1)%perLine) == 0) {
     90                     super.println(line);
     91                     line = "";
     92                 }
     93             }
     94             super.println(line);
     95         }
     96     }
     97 
     98     private static String[] names;
     99 
    100     static {
    101         try {
    102             names = AccessController
    103                     .doPrivileged(new PrivilegedAction<String[]>() {
    104                         public String[] run() {
    105                             return System.getProperty("jsse", "").split(",");
    106                         }
    107                     });
    108         } catch (Exception e) {
    109             names = new String[0];
    110         }
    111     }
    112 
    113     public static Stream getStream(String name) {
    114         for (int i=0; i<names.length; i++) {
    115             if (names[i].equals(name)) {
    116                 return new Stream(name);
    117             }
    118         }
    119         return null;
    120     }
    121 }
    122 
    123