1 /*
   2  * Copyright (c) 2008, 2012 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  /*
  25   @test
  26   @bug 6522586 6868690
  27   @summary Enforce limits on font creation
  28   @run main BigFont
  29 */  
  30 import java.applet.*;
  31 import java.awt.*;
  32 import java.io.*;
  33 import java.net.*;
  34 
  35 public class BigFont extends Applet {
  36 
  37    public static void main(String args[]) {
  38         System.setSecurityManager(new SecurityManager());
  39         (new BigFont()).runTest1();
  40    }
  41 
  42    static private class SizedInputStream extends InputStream {
  43 
  44        int size;
  45        int cnt = 0;
  46 
  47        SizedInputStream(int size) {
  48            this.size = size;
  49        }
  50 
  51        public int read() {
  52            if (cnt < size) {
  53               cnt++;
  54               return 0;
  55            } else {
  56               return -1;
  57            }
  58        }
  59 
  60        public int getCurrentSize() {
  61            return cnt;
  62        }
  63    }
  64 
  65     String id;
  66     String fileName;
  67 
  68     public void init() {
  69         id = getParameter("number");
  70         fileName = getParameter("font");
  71 
  72         System.out.println("Applet " + id + " "+
  73                            Thread.currentThread().getThreadGroup());    
  74         runTest1();
  75         runTest2();
  76     }
  77     void runTest1() {
  78         // Larger than size for a single font.
  79         int fontSize = 64 * 1000 * 1000;
  80         SizedInputStream sis = new SizedInputStream(fontSize);
  81         try {
  82              Font font = Font.createFont(Font.TRUETYPE_FONT, sis);
  83         } catch (Throwable t) {
  84             if (t instanceof FontFormatException ||
  85                 fontSize <= sis.getCurrentSize())
  86             {
  87                 System.out.println(sis.getCurrentSize());
  88                 System.out.println(t);
  89                 throw new RuntimeException("Allowed file to be too large.");
  90             }
  91         }
  92     }
  93     void runTest2() {
  94         // The following part of the test was verified manually but
  95         // is impractical to enable  because it requires a fairly large
  96         // valid font to be part of the test, and we can't easily include
  97         // that, nor dependably reference one from the applet environment.
  98         /*
  99         if (fileName == null) {
 100             return;
 101         }
 102         int size = getFileSize(fileName);
 103         if (size == 0) {
 104             return;
 105         }
 106         int fontCnt = 1000 * 1000 * 1000 / size;
 107         loadMany(size, fontCnt, fileName);
 108         System.gc(); System.gc();
 109         fontCnt = fontCnt / 2;
 110         System.out.println("Applet " + id + " load more.");
 111         loadMany(size, fontCnt, fileName);
 112         */
 113         System.out.println("Applet " + id + " finished.");
 114     }
 115 
 116     int getFileSize(String fileName) {
 117         try {
 118             URL url = new URL(getCodeBase(), fileName);
 119             InputStream inStream = url.openStream();
 120             BufferedInputStream fontStream = new BufferedInputStream(inStream);
 121             int size = 0;
 122             while (fontStream.read() != -1) {
 123                 size++;
 124             }
 125             fontStream.close();
 126             return size;
 127         } catch (IOException e) {
 128             return 0;
 129         }
 130 
 131     }
 132     void loadMany(int oneFont, int fontCnt, String fileName) {
 133         System.out.println("fontcnt= " + fontCnt);
 134         Font[] fonts = new Font[fontCnt];
 135         int totalSize = 0;
 136         boolean gotException = false;
 137         for (int i=0; i<fontCnt; i++) {
 138             try {
 139                 URL url = new URL(getCodeBase(), fileName);
 140                 InputStream inStream = url.openStream();
 141                 BufferedInputStream fontStream =
 142                     new BufferedInputStream(inStream);
 143                 fonts[i] = Font.createFont(Font.TRUETYPE_FONT, fontStream);
 144                 totalSize += oneFont;
 145                 fontStream.close();
 146             } catch (Throwable t) {
 147                 gotException = true;
 148                 System.out.println("Applet " + id + " " + t);
 149             }
 150         }
 151         if (!gotException) {
 152           throw new RuntimeException("No expected exception");
 153         }
 154     }
 155 }
 156