1 /*
   2  * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import java.applet.*;
  25 import java.awt.*;
  26 import java.io.*;
  27 import java.net.*;
  28 
  29 public class BigFont extends Applet {
  30 
  31    static private class SizedInputStream extends InputStream {
  32 
  33        int size;
  34        int cnt = 0;
  35 
  36        SizedInputStream(int size) {
  37            this.size = size;
  38        }
  39 
  40        public int read() {
  41            if (cnt < size) {
  42               cnt++;
  43               return 0;
  44            } else {
  45               return -1;
  46            }
  47        }
  48 
  49        public int getCurrentSize() {
  50            return cnt;
  51        }
  52    }
  53 
  54     String id;
  55     String fileName;
  56 
  57     public void init() {
  58         id = getParameter("number");
  59         fileName = getParameter("font");
  60 
  61         System.out.println("Applet " + id + " "+
  62                            Thread.currentThread().getThreadGroup());
  63         // Larger than size for a single font.
  64         int fontSize = 64 * 1000 * 1000;
  65         SizedInputStream sis = new SizedInputStream(fontSize);
  66         try {
  67              Font font = Font.createFont(Font.TRUETYPE_FONT, sis);
  68         } catch (Throwable t) {
  69             if (t instanceof FontFormatException ||
  70                 fontSize <= sis.getCurrentSize())
  71             {
  72                 System.out.println(sis.getCurrentSize());
  73                 System.out.println(t);
  74                 throw new RuntimeException("Allowed file to be too large.");
  75             }
  76         }
  77         // The following part of the test was verified manually but
  78         // is impractical to enable  because it requires a fairly large
  79         // valid font to be part of the test, and we can't easily include
  80         // that, nor dependably reference one from the applet environment.
  81         /*
  82         if (fileName == null) {
  83             return;
  84         }
  85         int size = getFileSize(fileName);
  86         if (size == 0) {
  87             return;
  88         }
  89         int fontCnt = 1000 * 1000 * 1000 / size;
  90         loadMany(size, fontCnt, fileName);
  91         System.gc(); System.gc();
  92         fontCnt = fontCnt / 2;
  93         System.out.println("Applet " + id + " load more.");
  94         loadMany(size, fontCnt, fileName);
  95         */
  96         System.out.println("Applet " + id + " finished.");
  97     }
  98 
  99     int getFileSize(String fileName) {
 100         try {
 101             URL url = new URL(getCodeBase(), fileName);
 102             InputStream inStream = url.openStream();
 103             BufferedInputStream fontStream = new BufferedInputStream(inStream);
 104             int size = 0;
 105             while (fontStream.read() != -1) {
 106                 size++;
 107             }
 108             fontStream.close();
 109             return size;
 110         } catch (IOException e) {
 111             return 0;
 112         }
 113 
 114     }
 115     void loadMany(int oneFont, int fontCnt, String fileName) {
 116         System.out.println("fontcnt= " + fontCnt);
 117         Font[] fonts = new Font[fontCnt];
 118         int totalSize = 0;
 119         boolean gotException = false;
 120         for (int i=0; i<fontCnt; i++) {
 121             try {
 122                 URL url = new URL(getCodeBase(), fileName);
 123                 InputStream inStream = url.openStream();
 124                 BufferedInputStream fontStream =
 125                     new BufferedInputStream(inStream);
 126                 fonts[i] = Font.createFont(Font.TRUETYPE_FONT, fontStream);
 127                 totalSize += oneFont;
 128                 fontStream.close();
 129             } catch (Throwable t) {
 130                 gotException = true;
 131                 System.out.println("Applet " + id + " " + t);
 132             }
 133         }
 134         if (!gotException) {
 135           throw new RuntimeException("No expected exception");
 136         }
 137     }
 138 }
 139