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      1 /*
      2  * [The "BSD licence"]
      3  * Copyright (c) 2010 Ben Gruver
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 package org.jf.dexlib;
     30 
     31 import org.jf.dexlib.Util.Input;
     32 
     33 import java.io.UnsupportedEncodingException;
     34 
     35 public class OdexDependencies {
     36     public final int modificationTime;
     37     public final int crc;
     38     public final int dalvikBuild;
     39 
     40     private final String[] dependencies;
     41     private final byte[][] dependencyChecksums;
     42 
     43     public OdexDependencies (Input in) {
     44         modificationTime = in.readInt();
     45         crc = in.readInt();
     46         dalvikBuild = in.readInt();
     47 
     48         int dependencyCount = in.readInt();
     49 
     50         dependencies = new String[dependencyCount];
     51         dependencyChecksums = new byte[dependencyCount][];
     52 
     53         for (int i=0; i<dependencyCount; i++) {
     54             int stringLength = in.readInt();
     55 
     56             try {
     57                 dependencies[i] = new String(in.readBytes(stringLength), 0, stringLength-1, "US-ASCII");
     58             } catch (UnsupportedEncodingException ex) {
     59                 throw new RuntimeException(ex);
     60             }
     61             dependencyChecksums[i] = in.readBytes(20);
     62         }
     63     }
     64 
     65     public int getDependencyCount() {
     66         return dependencies.length;
     67     }
     68 
     69     public String getDependency(int index) {
     70         return dependencies[index];
     71     }
     72 
     73     public byte[] getDependencyChecksum(int index) {
     74         return dependencyChecksums[index].clone();
     75     }
     76 }
     77